Dividend Sustainability Strategic Opportunity Portfolio 2020-2

Global High Dividend Portfolio 2020-2

The unit investment trusts named above (the “Portfolios”), included in Invesco Unit Trusts, Series 2055, each invest ina portfolio of stocks. Of course, we cannot guarantee that a Portfolio will achieve its objective.

May 21, 2020

You should read this prospectus and retain it for future reference.

The Securities and Exchange Commission has not approved or disapproved of the Unitsor passed upon the adequacy or accuracy of this prospectus.

Any contrary representation is a criminal offense.

INVESCO

Investment Objective. The Portfolio seeks toprovide the potential for above average capitalappreciation.

Principal Investment Strategy. The Portfolioseeks to achieve its objective by investing in aportfolio of common stocks of companies derivedfrom the S&P High Yield Dividend Aristocrats Index.The S&P High Yield Dividend Aristocrats Indexconsists of stocks of those companies contained inthe S&P Composite 1500 Index that have followed amanaged-dividends policy of consistently increasingdividends every year for at least 20 years. InvescoCapital Markets, Inc., the Sponsor, selects the stocksfor the Portfolio from among the S&P High YieldDividend Aristocrats Index component list as mostrecently made available to the Sponsor prior to theInitial Date of Deposit.

The Portfolio will consist of companies from theS&P High Yield Dividend Aristocrats Index that, ifrated, have a domestic S&P Global Quality Rank of Bor better or, if rated, an S&P Global Issuer CreditRating of BBB or better.

Beginning with the S&P High Yield DividendAristocrats Index, the Sponsor selects the compositionof the Portfolio by: (1) eliminating companies with ashare price below $5 at the time of selection; (2)eliminating companies, if rated, with an S&P GlobalQuality Ranking below B or, if rated, with an S&PGlobal Issuer Credit Rating below BBB (companieswhich do not have a domestic S&P Global QualityRank or an S&P Global Issuer Credit Rating may beincluded); and (3) further selecting companies basedon factors including, but not limited to:

• Valuation – Companies whose currentvaluations appear attractive relative to long-term trends.

• Growth – Companies with a history of andprospects for above average growth of salesand earnings.

• Cash Flow Generation – Companies with ahistory of generating attractive operating andfree cash flows in order to facilitate current andfuture dividends.

• Balance Sheet – Companies displaying balancesheet strength evidenced by a history ofachieving strong financial results and makingdisciplined capital management decisions.

• Returns – Companies with a history of aboveaverage returns on invested capital.

Of course, we cannot guarantee that your Portfoliowill achieve its objective. The value of your Units may fallbelow the price you paid for the Units. You should readthe “Risk Factors” section before you invest.

The Portfolio is designed as part of a long-terminvestment strategy. The Sponsor may offer asubsequent series of the portfolio when the currentPortfolio terminates. As a result, you may achieve moreconsistent overall results by following the strategythrough reinvestment of your proceeds over severalyears if subsequent series are available. Repeatedlyrolling over an investment in a unit investment trust maydiffer from long-term investments in other investmentproducts when considering the sales charges, fees,expenses and tax consequences attributable to aUnitholder. For more information see “Rights ofUnitholders--Rollover”.

Principal Risks. As with all investments, you canlose money by investing in this Portfolio. The Portfolioalso might not perform as well as you expect. Thiscan happen for reasons such as these:

• Security prices will fluctuate. The value ofyour investment may fall over time.

• An issuer may be unwilling or unable todeclare dividends in the future, or mayreduce the level of dividends declared.This may result in a reduction in the value ofyour Units.

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Dividend Sustainability Strategic Opportunity Portfolio

• The financial condition of an issuer mayworsen or its credit ratings may drop,resulting in a reduction in the value ofyour Units. This may occur at any point intime, including during the initial offering period.

• You could experience dilution of yourinvestment if the size of the Portfoliois increased as Units are sold. There isno assurance that your investment wi l lmainta in i ts proport ionate share in thePortfolio’s profits and losses.

• The Portfolio does not replicate all of thecomponents of the S&P High YieldDividend Aristocrats Index or itscomponent weightings and the stocks inthe Portfolio will not change if the indexcomponents, or their weightings withinthe index, change. The performance of thePortfolio will not correspond with the S&P HighYield Dividend Aristocrats Index for this reasonand because the Portfolio incurs a sales chargeand expenses. The Portfolio is not intended toreplicate the performance of the index.

• We do not actively manage the Portfolio.Except in limited circumstances, the Portfolio willhold, and may continue to buy, shares of thesame securities even if their market valuedeclines.

3

Fee Table

The amounts below are estimates of the direct and indirectexpenses that you may incur based on a $10 Public Offering Price perUnit. Actual expenses may vary.

As a % of Public Amount Offering Per 100Sales Charge Price Units _________ _________

Initial sales charge 0.000% $ 0.000Deferred sales charge 1.350 13.500Creation and development fee 0.500 5.000 ______ ______Maximum sales charge 1.850% $18.500 ______ ______ ______ ______

As a % Amount of Net Per 100 Assets Units _________ _________

Estimated Organization Costs 0.667% $6.500 ______ ______ ______ ______

Estimated Annual Expenses Trustee’s fee and operating expenses 0.346% $3.373Supervisory, bookkeeping

and administrative fees 0.056 0.550 ______ ______

Total 0.402% $3.923* ______ ______ ______ ______

Example

This example helps you compare the cost of the Portfolio with otherunit trusts and mutual funds. In the example we assume that theexpenses do not change and that the Portfolio’s annual return is 5%. Youractual returns and expenses will vary. This example also assumes thatyou continue to follow the Portfolio strategy and roll your investment,including all distributions, into a new trust each year subject to a salescharge of 1.85%. Based on these assumptions, you would pay thefollowing expenses for every $10,000 you invest in the Portfolio:

1 year $ 289 3 years 885 5 years 1,504 10 years 3,162

* The estimated annual expenses are based upon the estimated trust sizefor the Portfolio determined as of the initial date of deposit. Becausecertain of the operating expenses are fixed amounts, if the Portfolio doesnot reach the estimated size, or if the value of the Portfolio or number ofoutstanding units decline over the life of the trust, or if the actual amountof the operating expenses exceeds the estimated amounts, the actualamount of the operating expenses per 100 units would exceed theestimated amounts. In some cases, the actual amount of operatingexpenses may substantially differ from the amounts reflected above.

The maximum sales charge is 1.85% of the Public Offering Priceper Unit. There is no initial sales charge at a Public Offering Price of$10 or less. If the Public Offering Price exceeds $10 per Unit, theinitial sales charge is the difference between the total sales charge(maximum of 1.85% of the Public Offering Price) and the sum of theremaining deferred sales charge and the creation and developmentfee. The deferred sales charge is fixed at $0.135 per Unit andaccrues daily from September 10, 2020 through February 9, 2021.Your Portfolio pays a proportionate amount of this charge on the 10thday of each month beginning in the accrual period until paid in full.The combination of the initial and deferred sales charges comprisesthe “transactional sales charge”. The creation and development fee isfixed at $0.05 per Unit and is paid at the earlier of the end of theinitial offering period (anticipated to be three months) or six monthsfollowing the Initial Date of Deposit. For more detail, see “PublicOffering Price -- General.”

Essential Information

Unit Price at Initial Date of Deposit $10.0000

Initial Date of Deposit May 21, 2020

Mandatory Termination Date August 20, 2021

Historical 12 Month Distributions1 $0.20916 per Unit

Estimated Initial Distribution1 $0.05 per Unit

Record Dates 10th day of each September, December and March, commencing September 10, 2020

Distribution Dates 25th day of each September, December and March, commencing September 25, 2020

CUSIP Numbers Cash – 46147C746

Reinvest – 46147C753

Fee Based Cash – 46147C761

Fee Based Reinvest – 46147C779

1 As of close of business day prior to Initial Date of Deposit. The actualdistributions you receive will vary from this per Unit amount due tochanges in the Portfolio’s fees and expenses, in actual income receivedby the Portfolio, currency fluctuations and with changes in the Portfoliosuch as the acquisition or liquidation of securities. In addition, due tothe negative economic impact across many industries caused by therecent COVID-19 outbreak, certain issuers of the securities included inthe Portfolio may elect to reduce the amount of, or cancel entirely,dividends and/or distributions paid in the future. See “Rights ofUnitholders--Historical and Estimated Distributions.”

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Dividend Sustainability Strategic Opportunity Portfolio 2020-2

Portfolio______________________________________________________________________________________________________________ Cost ofNumber Market Value Securities toof Shares Name of Issuer (1) per Share (2) Portfolio (2) ___________ ___________________________________________ _____________ _____________ Communication Services - 4.00% 200 AT&T, Inc. $ 29.590 $ 5,918.00 Consumer Discretionary - 12.05% 51 Lowe’s Companies, Inc. 116.990 5,966.49 32 McDonald’s Corporation 184.100 5,891.20 50 Target Corporation 119.630 5,981.50 Consumer Staples - 15.95% 129 Coca-Cola Company 45.890 5,919.81 45 PepsiCo, Inc. 131.260 5,906.70 52 Procter & Gamble Company 113.280 5,890.56 47 Walmart, Inc. 125.450 5,896.15 Financials - 15.94% 170 Aflac, Inc. 34.800 5,916.00+ 56 Chubb, Ltd. 104.610 5,858.16 19 S&P Global, Inc. 314.000 5,966.00 51 T. Rowe Price Group, Inc. 114.840 5,856.84 Health Care - 12.05% 66 Abbott Laboratories 90.090 5,945.94 40 Johnson & Johnson 147.680 5,907.20+ 61 Medtronic plc 98.080 5,982.88 Industrials - 15.99% 104 Emerson Electric Company 56.810 5,908.24 102 Raytheon Technologies Corporation 57.800 5,895.60 16 Roper Technologies, Inc. 367.880 5,886.08 47 Stanley Black & Decker, Inc. 127.130 5,975.11 Information Technology - 4.01% 44 Automatic Data Processing, Inc. 134.780 5,930.32 Materials - 8.02% 25 Air Products and Chemicals, Inc. 239.800 5,995.00 29 Ecolab, Inc. 202.450 5,871.05 Utilities - 11.99% 60 Atmos Energy Corporation 99.410 5,964.60 75 Eversource Energy 79.400 5,955.00 25 NextEra Energy, Inc. 232.790 5,819.75___________ ____________ 1,596 $ 148,004.18___________ _______________________ ____________

See “Notes to Portfolios”.

Investment Objective. The Portfolio seeksabove-average total return.

Principal Investment Strategy. The Portfolioseeks to achieve its objective by investing in a portfolioof domestic stocks and ADRs of companies with thepotential to pay attractive dividend distributions. Inselecting the Portfolio, Invesco Capital Markets, Inc.,the Sponsor, sought to include dividend-payingcompanies with operations and/or a business presencethroughout the world that have met certain qualityrequirements. The Sponsor only considered companieshaving a Standard & Poor’s debt rating of “BBB-” orhigher. Companies considered for inclusion in thePortfolio must have recent dividend per share growthand meet certain market capitalization and liquidityrequirements.

The Sponsor selected the final portfolio through ananalysis of factors which may include: 1) forwardearnings and cash-f low project ions, 2) recentearnings growth, 3) debt-to-equity levels, and 4) peergroup analysis.

Of course, we cannot guarantee that your Portfoliowill achieve its objective. The value of your Units mayfall below the price you paid for the Units. You shouldread the “Risk Factors” section before you invest.

The Portfolio is designed as part of a long-terminvestment strategy. The Sponsor may offer asubsequent series of the portfolio when the currentPortfolio terminates. As a result, you may achieve moreconsistent overall results by following the strategythrough reinvestment of your proceeds over severalyears if subsequent series are available. Repeatedlyrolling over an investment in a unit investment trust maydiffer from long-term investments in other investmentproducts when considering the sales charges, fees,expenses and tax consequences attributable to aUnitholder. For more information see “Rights ofUnitholders--Rollover”.

Principal Risks. As with all investments, you canlose money by investing in this Portfolio. The Portfolio

also might not perform as well as you expect. This canhappen for reasons such as these:

• Security prices will fluctuate. The value ofyour investment may fall over time.

• An issuer may be unwilling or unable todeclare dividends in the future, or mayreduce the level of dividends declared.This may result in a reduction in the value ofyour Units.

• The financial condition of an issuer mayworsen or its credit ratings may drop,resulting in a reduction in the value ofyour Units. This may occur at any point intime, including during the initial offering period.

• You could experience dilution of yourinvestment if the size of the Portfolio isincreased as Units are sold. There is noassurance that your investment will maintainits proportionate share in the Portfolio’s profitsand losses.

• Stocks of foreign companies in thePortfolio present risks beyond those ofU.S. issuers. These r isks may includemarket and political factors related to thecompany’s foreign market, international tradeconditions, less regulation, smaller or lessliquid markets, increased volatility, differingaccounting practices and changes in the valueof foreign currencies.

• We do not actively manage the Portfolio.Except in limited circumstances, the Portfolio willhold, and may continue to buy, shares of thesame securities even if their market valuedeclines.

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Global High Dividend Portfolio

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Fee Table

The amounts below are estimates of the direct and indirectexpenses that you may incur based on a $10 Public Offering Price perUnit. Actual expenses may vary.

As a % of Public Amount Offering Per 100Sales Charge Price Units _________ _________

Initial sales charge 0.000% $ 0.000Deferred sales charge 1.350 13.500Creation and development fee 0.500 5.000 ______ ______Maximum sales charge 1.850% $18.500 ______ ______ ______ ______

As a % Amount of Net Per 100 Assets Units _________ _________

Estimated Organization Costs 0.667% $6.500 ______ ______ ______ ______

Estimated Annual Expenses Trustee’s fee and operating expenses 0.280% $2.726Supervisory, bookkeeping

and administrative fees 0.056 0.550 ______ ______

Total 0.336% $3.276* ______ ______ ______ ______

Example

This example helps you compare the cost of the Portfolio with otherunit trusts and mutual funds. In the example we assume that theexpenses do not change and that the Portfolio’s annual return is 5%. Youractual returns and expenses will vary. This example also assumes thatyou continue to follow the Portfolio strategy and roll your investment,including all distributions, into a new trust each year subject to a salescharge of 1.85%. Based on these assumptions, you would pay thefollowing expenses for every $10,000 you invest in the Portfolio:

1 year $ 283 3 years 865 5 years 1,471 10 years 3,100

* The estimated annual expenses are based upon the estimated trust sizefor the Portfolio determined as of the initial date of deposit. Becausecertain of the operating expenses are fixed amounts, if the Portfolio doesnot reach the estimated size, or if the value of the Portfolio or number ofoutstanding units decline over the life of the trust, or if the actual amountof the operating expenses exceeds the estimated amounts, the actualamount of the operating expenses per 100 units would exceed theestimated amounts. In some cases, the actual amount of operatingexpenses may substantially differ from the amounts reflected above.

The maximum sales charge is 1.85% of the Public Offering Priceper Unit. There is no initial sales charge at a Public Offering Price of$10 or less. If the Public Offering Price exceeds $10 per Unit, theinitial sales charge is the difference between the total sales charge(maximum of 1.85% of the Public Offering Price) and the sum of theremaining deferred sales charge and the creation and developmentfee. The deferred sales charge is fixed at $0.135 per Unit andaccrues daily from September 10, 2020 through February 9, 2021.Your Portfolio pays a proportionate amount of this charge on the 10thday of each month beginning in the accrual period until paid in full.The combination of the initial and deferred sales charges comprisesthe “transactional sales charge”. The creation and development fee isfixed at $0.05 per Unit and is paid at the earlier of the end of theinitial offering period (anticipated to be three months) or six monthsfollowing the Initial Date of Deposit. For more detail, see “PublicOffering Price -- General.”

Essential Information

Unit Price at Initial Date of Deposit $10.0000

Initial Date of Deposit May 21, 2020

Mandatory Termination Date August 20, 2021

Historical 12 Month Distributions1 $0.37626 per Unit

Estimated Initial Distribution1 $0.08 per Unit

Record Dates 10th day of each September, December and March, commencing September 10, 2020

Distribution Dates 25th day of each September, December and March, commencing September 25, 2020

CUSIP Numbers Cash – 46147C787

Reinvest – 46147C795

Fee Based Cash – 46147C803

Fee Based Reinvest – 46147C811

1 As of close of business day prior to Initial Date of Deposit. The actualdistributions you receive will vary from this per Unit amount due tochanges in the Portfolio’s fees and expenses, in actual income receivedby the Portfolio, currency fluctuations and with changes in the Portfoliosuch as the acquisition or liquidation of securities. In addition, due tothe negative economic impact across many industries caused by therecent COVID-19 outbreak, certain issuers of the securities included inthe Portfolio may elect to reduce the amount of, or cancel entirely,dividends and/or distributions paid in the future. See “Rights ofUnitholders--Historical and Estimated Distributions.”

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Global High Dividend Portfolio 2020-2

Portfolio______________________________________________________________________________________________________________ Cost ofNumber Market Value Securities toof Shares Name of Issuer (1) per Share (2) Portfolio (2) ___________ ___________________________________________ _____________ _____________ Communication Services - 9.99% 169 AT&T, Inc. $ 29.5900 $ 5,000.71+ 304 TELUS Corporation 16.1900 4,921.76 91 Verizon Communications, Inc. 54.2600 4,937.66 Consumer Discretionary - 10.08% 21 Home Depot, Inc. 238.1900 5,001.99 170 Leggett & Platt, Inc. 29.6200 5,035.40 27 McDonald’s Corporation 184.1000 4,970.70 Consumer Staples - 13.32% 108 Coca-Cola Company 45.8900 4,956.12 36 Kimberly-Clark Corporation 136.8500 4,926.60 71 Philip Morris International, Inc. 70.4700 5,003.37+ 96 Unilever plc - ADR 51.4300 4,937.28 Energy - 10.04%+ 211 BP plc - ADR 23.6200 4,983.82 54 Chevron Corporation 93.0000 5,022.00+ 154 Enbridge, Inc. 32.0300 4,932.62 Financials - 13.39% 10 BlackRock, Inc. 508.7400 5,087.40 91 Blackstone Group, Inc. - CL A 54.2600 4,937.66+ 80 Royal Bank of Canada 61.8700 4,949.60+ 121 Toronto-Dominion Bank 40.9000 4,948.90 Health Care - 13.21% 78 CVS Health Corporation 63.2200 4,931.16+ 119 GlaxoSmithKline plc - ADR 41.3100 4,915.89 33 Johnson & Johnson 147.6800 4,873.44 131 Pfizer, Inc. 37.6300 4,929.53 Industrials - 10.04% 87 Emerson Electric Company 56.8100 4,942.47 14 Lockheed Martin Corporation 362.5100 5,075.14+ 269 nVent Electric plc 18.3100 4,925.39 Information Technology - 13.29% 18 Broadcom, Inc. 278.6800 5,016.24 108 Cisco Systems, Inc. 45.4400 4,907.52 61 QUALCOMM, Inc. 80.6300 4,918.43 42 Texas Instruments, Inc. 117.4800 4,934.16 Utilities - 6.64% 63 Dominion Energy, Inc. 78.7500 4,961.25 59 Duke Energy Corporation 83.3100 4,915.29___________ ____________ 2,896 $ 148,799.50___________ _______________________ ____________

See “Notes to Portfolios”.

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Notes to Portfolios

(1) The Securities are initially represented by “regular way” contracts for the performance of which an irrevocable letter ofcredit has been deposited with the Trustee. Contracts to acquire Securities were entered into on May 20, 2020 andhave a settlement date of May 22, 2020 (see “The Portfolios”).

(2) The value of each Security is determined on the bases set forth under “Public Offering--Unit Price” as of the close of theNew York Stock Exchange on the business day before the Initial Date of Deposit. In accordance with FASB AccountingStandards Codification (“ASC”), ASC 820, Fair Value Measurements and Disclosures, the Portfolio’s investments areclassified as Level 1, which refers to security prices determined using quoted prices in active markets for identicalsecurities. Other information regarding the Securities, as of the Initial Date of Deposit, is as follows:

Profit Cost to (Loss) To Sponsor Sponsor ______________ _____________

Dividend Sustainability Strategic Opportunity Portfolio . . . . . . . $ 148,004 $ 0Global High Dividend Portfolio . . . . . . . . . . . . . . . . . . . . . . . . . $ 148,800 $ 0

“+” indicates that the security was issued by a foreign company.

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REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the Sponsor and Unitholders of Invesco Unit Trusts, Series 2055:

Opinion on the Financial Statements

We have audited the accompanying statements of condition (including the related portfolio schedules) ofDividend Sustainability Strategic Opportunity Portfolio 2020-2 and Global High Dividend Portfolio 2020-2(included in Invesco Unit Trusts, Series 2055 (the “Trust”)) as of May 21, 2020, and the related notes(collectively referred to as the “financial statements”). In our opinion, the financial statements present fairly, inall material respects, the financial position of the Trust as of May 21, 2020, in conformity with accountingprinciples generally accepted in the United States of America.

Basis for Opinion

These financial statements are the responsibility of Invesco Capital Markets, Inc., the Sponsor. Ourresponsibility is to express an opinion on the Trust’s financial statements based on our audits. We are a publicaccounting firm registered with the Public Company Accounting Oversight Board (United States) (“PCAOB”)and are required to be independent with respect to the Trust in accordance with the U.S. federal securitieslaws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audits in accordance with the standards of the PCAOB. Those standards require thatwe plan and perform the audits to obtain reasonable assurance about whether the financial statements arefree of material misstatement, whether due to error or fraud. The Trust is not required to have, nor were weengaged to perform, an audit of its internal control over financial reporting. As part of our audits we arerequired to obtain an understanding of internal control over financial reporting but not for the purpose ofexpressing an opinion on the effectiveness of the Trust’s internal control over financial reporting. Accordingly,we express no such opinion.

Our audits included performing procedures to assess the risks of material misstatement of the financialstatements, whether due to error or fraud, and performing procedures that respond to those risks. Suchprocedures included examining, on a test basis, evidence regarding the amounts and disclosures in thefinancial statements. Our audits also included evaluating the accounting principles used and significantestimates made by the Sponsor, as well as evaluating the overall presentation of the financial statements. Ourprocedures included confirmation of cash or irrevocable letters of credit deposited for the purchase ofsecurities as shown in the statements of condition as of May 21, 2020 by correspondence with The Bank ofNew York Mellon, Trustee. We believe that our audits provide a reasonable basis for our opinion.

/s/ GRANT THORNTON LLP

We have served as the auditor of one or more of the unit investment trusts, sponsored by Invesco CapitalMarkets, Inc. and its predecessors, since 1976.

New York, New YorkMay 21, 2020

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STATEMENTS OF CONDITIONAs of May 21, 2020

Dividend Sustainability Global Strategic High Opportunity DividendINVESTMENT IN SECURITIES Portfolio Portfolio _____________ _____________Contracts to purchase Securities (1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . $ 148,004 $ 148,800 _____________ _____________ Total . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . $ 148,004 $ 148,800 _____________ _____________ _____________ _____________

LIABILITIES AND INTEREST OF UNITHOLDERSLiabilities-- Organization costs (2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . $ 962 $ 967 Deferred sales charge liability (3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1,998 2,009 Creation and development fee liability (4) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 740 744 Interest of Unitholders-- Cost to investors (5) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 148,004 148,800 Less: deferred sales charge, creation and development fee and organization costs (2)(4)(5)(6) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3,700 3,720 _____________ _____________ Net interest to Unitholders (5) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 144,304 145,080 _____________ _____________ Total . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . $ 148,004 $ 148,800 _____________ _____________ _____________ _____________Units outstanding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14,801 14,880 _____________ _____________ _____________ _____________Net asset value per Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . $ 9.750 $ 9.750 _____________ _____________ _____________ _____________

(1) The value of the Securities is determined by the Trustee on the bases set forth under “Public Offering--Unit Price”. The contracts to purchaseSecurities are collateralized by separate irrevocable letters of credit which have been deposited with the Trustee.

(2) A portion of the Public Offering Price represents an amount sufficient to pay for all or a portion of the costs incurred in establishing a Portfolio.The amount of these costs are set forth in the “Fee Table”. A distribution will be made as of the earlier of the close of the initial offering period(approximately three months) or six months following the Initial Date of Deposit to an account maintained by the Trustee from which theorganization expense obligation of the investors will be satisfied. To the extent that actual organization costs of a Portfolio are greater than theestimated amount, only the estimated organization costs added to the Public Offering Price will be reimbursed to the Sponsor and deductedfrom the assets of the Portfolio.

(3) Represents the amount of mandatory distributions from a Portfolio on the bases set forth under “Public Offering”.(4) The creation and development fee is payable by a Portfolio on behalf of Unitholders out of the assets of the Portfolio as of the close of the initial

offering period. If Units are redeemed prior to the close of the initial public offering period, the fee will not be deducted from the proceeds.(5) The aggregate public offering price and the aggregate sales charge are computed on the bases set forth under “Public Offering”.(6) Assumes the maximum sales charge.

A-1

THE PORTFOLIOS

The Portfolios were created under the laws of theState of New York pursuant to a Trust Indenture andTrust Agreement (the “Trust Agreement”), dated thedate of this prospectus (the “Initial Date of Deposit”),among Invesco Capital Markets, Inc., as Sponsor,Invesco Investment Advisers LLC as Supervisor, andThe Bank of New York Mellon, as Trustee.

The Portfolios offer investors the opportunity topurchase Units representing proportionate interests inportfolios of securities. Each Portfolio may be anappropriate medium for investors who desire toparticipate in a portfolio of securities with greaterdiversification than they might be able to acquireindividually.

On the Initial Date of Deposit, the Sponsor depositeddelivery statements relating to contracts for thepurchase of the Securities and an irrevocable letter ofcredit in the amount required for these purchases withthe Trustee. In exchange for these contracts, theTrustee delivered to the Sponsor documentationevidencing the ownership of Units of the Portfolios.Unless otherwise terminated as provided in the TrustAgreement, the Portfol ios wi l l terminate on theMandatory Termination Date and any remainingSecurities will be liquidated or distributed by the Trusteewithin a reasonable time. As used in this prospectus theterm “Securities” means the securities (includingcontracts to purchase these securities) listed in each“Portfolio” and any additional securities deposited intoeach Portfolio.

Additional Units of a Portfolio may be issued at anytime by deposit ing in the Portfol io ( i ) addit ionalSecurities, (ii) contracts to purchase Securities togetherwith cash or irrevocable letters of credit or (iii) cash (or aletter of credit or the equivalent) with instructions topurchase additional Securities. As additional Units areissued by a Portfolio, the aggregate value of theSecurities will be increased and the fractional undividedinterest represented by each Unit may be decreased.The Sponsor may continue to make additional depositsinto a Portfolio following the Initial Date of Depositprovided that the additional deposits will be in amounts

which will maintain, as nearly as practicable, the samepercentage relationship among the number of shares ofeach Security in the Portfolio that existed immediatelyprior to the subsequent deposit. Investors mayexperience a dilution of their investments and areduction in their anticipated income because offluctuations in the prices of the Securities between thetime of the deposit and the purchase of the Securitiesand because the Portfolios will pay the associatedbrokerage or acquisition fees. In addition, during theinitial offering of Units it may not be possible to buy apart icular Security due to regulatory or tradingrestrictions, or corporate actions. While such limitationsare in effect, additional Units would be created bypurchasing each of the Securities in your Portfolio thatare not subject to those limitations. This would alsoresult in the dilution of the investment in any suchSecurity not purchased and potential variances inanticipated income. Purchases and sales of Securitiesby your Portfolio may impact the value of the Securities.This may especially be the case during the initial offeringof Units, upon Portfolio termination and in the course ofsatisfying large Unit redemptions.

Each Unit of your Portfolio initially offered representsan undivided interest in the Portfolio. At the close of theNew York Stock Exchange on the Init ial Date ofDeposit, the number of Units may be adjusted so thatthe Public Offering Price per Unit equals $10. Thenumber of Units, fractional interest of each Unit in yourPortfolio and any historical or estimated per Unitdistribution amount will increase or decrease to theextent of any adjustment. To the extent that any Unitsare redeemed to the Trustee or additional Units areissued as a result of additional Securit ies beingdeposited by the Sponsor, the fractional undividedinterest in your Portfol io represented by eachunredeemed Unit will increase or decrease accordingly,although the actual interest in your Portfolio will remainunchanged. Units wi l l remain outstanding unti lredeemed upon tender to the Trustee by Unitholders,which may include the Sponsor, or until the terminationof the Trust Agreement.

Each Portfolio consists of (a) the Securities (includingcontracts for the purchase thereof) listed under the

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applicable “Portfolio” as may continue to be held fromtime to time in the Portfolio, (b) any additional Securitiesacquired and held by the Portfolio pursuant to theprovisions of the Trust Agreement and (c) any cash heldin the related Income and Capital Accounts. Neither theSponsor nor the Trustee shall be liable in any way forany contract failure in any of the Securities.

OBJECTIVES AND SECURITIES SELECTION

The objective of each Portfolio is described in theindividual Portfolio sections. There is no assurance thata Portfolio will achieve its objective.

Dividend Sustainabi l i ty Strategic OpportunityPortfolio. The Sponsor, on behalf of the DividendSustainability Strategic Opportunity Portfolio hasentered into a license agreement with S&P Opco, LLC,a subsidiary of S&P Dow Jones Indices LLC underwhich the Dividend Sustainability Strategic OpportunityPortfolio is granted a license to use certain trademarksand tradenames, to the extent the Sponsor deemsappropriate and desirable under federal and statesecurities laws to indicate the index that is a source fordetermining the composit ion of the DividendSustainability Strategic Opportunity Portfolio. ThePortfolio is based in part on an S&P Index, but is notsponsored, endorsed, marketed or promoted by S&PDow Jones Indices LLC or its affiliates or its third partyl icensors, including Standard & Poor’s FinancialServices LLC (“SPFS”) and Dow Jones TrademarkHoldings LLC (“Dow Jones”) (collectively, “S&P DowJones Indices”). S&P® is a registered trademark ofSPFS, and Dow Jones® is a registered trademark ofDow Jones and have been licensed for use.

The Portfolio is not sponsored, endorsed, sold orpromoted by S&P Dow Jones Indices. S&P Dow JonesIndices does not make any representation or warranty,express or implied, to the owners of the Portfolio orany member of the public regarding the advisability ofinvesting in securities generally or in the Portfolioparticularly. S&P Dow Jones Indices’ only relationshipto the Sponsor with respect to the Portfolio is thel icensing of the underly ing S&P Index, certaintrademarks, service marks and trade names of S&P

Dow Jones Indices, and the provision of the calculationservices. S&P Dow Jones Indices is not responsible forand has not participated in the determination of theprices and amount of the Portfolio or the timing of theissuance or sale of the Portfolio or in the determinationor calculation of the equation by which the Portfoliomay be converted into cash or other redemptionmechanics. S&P Dow Jones Indices has no obligationor l iabil ity in connection with the administration,marketing or trading of the Portfolio. S&P Dow JonesIndices LLC is not an investment advisor. Inclusion of asecurity within the Portfolio is not a recommendationby S&P Dow Jones Indices to buy, sell, or hold suchsecurity, nor is it investment advice.

S&P DOW JONES INDICES DOES NOTGUARANTEE THE ADEQUACY, ACCURACY,TIMELINESS AND/OR THE COMPLETENESS OF THEPORTFOLIO, INTELLECTUAL PROPERTY,SOFTWARE, OR ANY DATA RELATED THERETO ORANY COMMUNICATION WITH RESPECT THERETO,INCLUDING, ORAL, WRITTEN, OR ELECTRONICCOMMUNICATIONS. S&P DOW JONES INDICESSHALL NOT BE SUBJECT TO ANY DAMAGES ORLIABILITY FOR ANY ERRORS, OMISSIONS, ORDELAYS THEREIN. S&P DOW JONES INDICESMAKES NO EXPRESS OR IMPLIED WARRANTIES,AND EXPRESSLY DISCLAIMS ALL WARRANTIES, OFMERCHANTABILITY OR FITNESS FOR APARTICULAR PURPOSE OR USE OR AS TORESULTS TO BE OBTAINED BY THE SPONSOR,OWNERS OF THE PORTFOLIO, OR ANY OTHERPERSON OR ENTITY FROM THE USE OF THEPORTFOLIO, INTELLECTUAL PROPERTY,SOFTWARE, OR WITH RESPECT TO ANY DATARELATED THERETO. WITHOUT LIMITING ANY OFTHE FOREGOING, IN NO EVENT WHATSOEVERSHALL S&P DOW JONES INDICES BE LIABLE FORANY INDIRECT, SPECIAL, INCIDENTAL, PUNITIVE, ORCONSEQUENTIAL DAMAGES, INCLUDING BUT NOTLIMITED TO, LOSS OF PROFITS, TRADING LOSSES,LOST TIME, OR GOODWILL, EVEN IF THEY HAVEBEEN ADVISED OF THE POSSIBILITY OF SUCHDAMAGES, WHETHER IN CONTRACT, TORT, STRICTLIABILITY, OR OTHERWISE.

RISK FACTORS

All investments involve risk. This section describesthe main r isks that can impact the value of thesecurities in the Portfolios. You should understandthese risks before you invest. If the value of thesecurities falls, the value of your Units will also fall. Wecannot guarantee that your Portfolio will achieve itsobjective or that your investment return will be positiveover any period.

Market Risk. Market risk is the risk that the value ofthe securities in your Portfolio will fluctuate. This couldcause the value of your Units to fall below your originalpurchase price. Market value fluctuates in response tovarious factors. These can include changes in interestrates, inflation, the financial condition of a security’sissuer, perceptions of the issuer, or ratings on a securityof the issuer. Certain geopolitical and other events,including environmental events and public health eventssuch as epidemics and pandemics, may have a globalimpact and add to instability in world economies andmarkets generally. Changing economic, political orfinancial market conditions in one country or geographicregion could adversely affect the market value of thesecurities held by your Portfolio in a different country orgeographic region due to increasingly interconnectedglobal economies and financial markets. Even thoughyour Portfolio is supervised, you should remember thatwe do not manage your Portfolio. Your Portfolio will notsell a security solely because the market value falls as ispossible in a managed fund.

Furthermore, a recent outbreak of a respiratorydisease caused by a novel coronavirus (“COVID-19”),first detected in China in December 2019, has spreadglobally in a short period of time. COVID-19 has resultedin the disruption of, and delays in, production and supplychains and the delivery of healthcare services andprocesses, as well as the cancellation of organizedevents and educational institutions, a decline inconsumer demand for certain goods and services, andgeneral concern and uncertainty. In response,governments and businesses world-wide, including theUnited States, have taken aggressive measures,including closing borders, restricting international and

domestic travel, imposing prolonged quarantines oflarge populations, and financial support of the economyand financial markets. COVID-19 and its effects havecontributed to increased volatility in global markets,severe loses, liquidity constraints, and lowered yields;the duration of such effects cannot yet be determinedbut could be present for an extended period of time. Theeffects that COVID-19 may have on certain sectors andindustries are uncertain and may adversely affect thevalue of your Portfolio.

Dividend Payment Risk. Dividend payment risk isthe risk that an issuer of a security is unwilling or unableto pay dividends on a security. Stocks representownership interests in the issuers and are not obligationsof the issuers. Common stockholders have a right toreceive dividends only after the company has providedfor payment of its creditors, bondholders and preferredstockholders. Common stocks do not assure dividendpayments. Dividends are paid only when declared by anissuer’s board of directors and the amount of anydividend may vary over time. If dividends received by aPortfolio are insufficient to cover expenses, redemptionsor other Portfolio costs, it may be necessary for thePortfolio to sell Securities to cover such expenses,redemptions or other costs. Any such sales may result incapital gains or losses to you. See “Taxation”.

Index Correlation. The Dividend SustainabilityStrategic Opportunity Portfolio will consist of stocksfrom the S&P High Yield Dividend Aristocrats Index. TheDividend Sustainability Strategic Opportunity Portfoliodoes not seek to replicate all of the components of theIndex or its component weightings and the stocks inthe Portfolio will not change if the index components, ortheir weightings within the index, change. Theperformance of the Dividend Sustainability StrategicOpportunity Portfolio will not correspond with the indexfor this reason and because the Dividend SustainabilityStrategic Opportunity Portfolio incurs a sales chargeand expenses.

Foreign Stocks. Because your Portfolio invests inforeign stocks, your Portfolio may involve additionalrisks that differ from an investment in domestic stocks.These risks include the risk of losses due to futurepolitical and economic developments, international

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trade condit ions, foreign withholding taxes andrestrictions on foreign investments or exchange ofsecurities, foreign currency fluctuations or restriction onexchange or repatriation of currencies.

The political, economic and social structures of someforeign countries may be less stable and more volatilethan those in the U.S. Investments in these countriesmay be subject to the risks of internal and externalconflicts, currency devaluations, foreign ownershiplimitations and tax increases. It is possible that agovernment may take over the assets or operations of acompany or impose restrictions on the exchange orexport of currency or other assets. Some countries alsomay have different legal systems that may make itdifficult for the Portfolio to vote proxies, exerciseinvestor rights, and pursue legal remedies with respectto its foreign investments. Diplomatic and politicaldevelopments, including rapid and adverse politicalchanges, social instability, regional conflicts, terrorismand war, could affect the economies, industries, andsecurities and currency markets, and the value of yourPortfolio’s investments, in non-U.S. countries. Inaddition, for foreign securities of European issuers, thedeparture of any European Union (“EU”) member fromuse of the Euro could lead to serious disruptions toforeign exchanges, operations and settlements, whichmay have an adverse effect on European issuers. Morerecently, there is uncertainty regarding the state of theEU following the United Kingdom’s (“U.K.”) initiation onMarch 27, 2017, of the process to exit from the EU(“Brexit”). As of January 31, 2020, the U.K. has officiallyexited the EU though trade negotiations are ongoing.The effect that Brexit may have on the global financialmarkets is uncertain. No one can predict the impactthat these factors could have on your Portfolio’ssecurities.

Certain stocks may be held in the form of AmericanDepositary Receipts (“ADRs”), Global DepositaryReceipts (“GDRs”), or other similar receipts. ADRs andGDRs represent receipts for foreign common stockdeposited with a custodian (which may include theTrustee). The ADRs in the Portfolio, if any, trade in theU.S. in U.S. dol lars and are registered with theSecurities and Exchange Commission (“SEC”). GDRs

are receipts, issued by foreign banks or trustcompanies, or foreign branches of U.S. banks, thatrepresent an interest in shares of either a foreign or U.S.corporation. These instruments may not necessarily bedenominated in the same currency as the securities intowhich they may be converted. ADRs and GDRsgenerally involve the same types of risks as foreigncommon stock held directly. Some ADRs and GDRsmay experience less liquidity than the underlyingcommon stocks traded in their home market. ThePortfolio may invest in sponsored or unsponsoredADRs. Unlike a sponsored ADR where the depositaryhas an exclusive relationship with the foreign issuer, anunsponsored ADR may be created by a depositaryinstitution independently and without the cooperation ofthe foreign issuer. Consequently, information concerningthe foreign issuer may be less current or reliable for anunsponsored ADR and the price of an unsponsoredADR may be more volatile than if it was a sponsoredADR. Depositaries of unsponsored ADRs are notrequired to distribute shareholder communicationsreceived from the foreign issuer or to pass throughvoting rights to its holders. The holders of unsponsoredADRs generally bear all the costs associated withestablishing the unsponsored ADR, whereas the foreignissuers typically bear certain costs in a sponsored ADR.

The purchase and sale of the foreign securities mayoccur in foreign securities markets. Certain of thefactors stated above may make it impossible to buy orsell them in a timely manner or may adversely affect thevalue received on a sale of securities. Custody ofcertain of the securit ies in the Portfol io may bemaintained by a global custody and clearing institutionwhich has entered into a sub-custodian relationshipwith the Trustee. In addit ion, round lot tradingrequirements exist in certain foreign securities markets.These round lot trading requirements could cause theproportional composition and diversification of yourPortfol io’s securit ies to vary when the Portfol iopurchases additional securities or sells securities tosatisfy expenses or Unit redemptions. This could have amaterial impact on investment performance andportfolio composition. Brokerage commissions andother fees generally are higher for foreign securities.

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Government supervision and regulation of foreignsecurities markets, currency markets, trading systemsand brokers may be less than in the U.S. Theprocedures and rules governing foreign transactionsand custody (holding of the Portfolio’s assets) also mayinvolve delays in payment, delivery or recovery ofmoney or investments.

Foreign companies may not be subject to the samedisclosure, accounting, auditing and financial reportingstandards and practices as U.S. companies. Thus,there may be less information publicly available aboutforeign companies than about most U.S. companies.

Certain foreign securities may be less liquid (harder tosell) and more volatile than many U.S. securities. Thismeans the Portfolio may at times be unable to sell foreignsecurities in a timely manner or at favorable prices.

Because securities of foreign issuers not listed on aU.S. securities exchange generally pay dividends andtrade in foreign currencies, the U.S. dollar value of thesesecurities and dividends will vary with fluctuations inforeign exchange rates. Most foreign currencies havefluctuated widely in value against the U.S. dollar forvarious economic and political reasons. To determinethe value of foreign securities or their dividends, theTrustee will estimate current exchange rates for therelevant currencies based on activity in the variouscurrency exchange markets. However, these marketscan be quite volatile depending on the activity of thelarge international commercial banks, various centralbanks, large multi-national corporations, speculatorsand other buyers and sellers of foreign currencies.Since actual foreign currency transactions may not beinstantly reported, the exchange rates estimated by theTrustee may not reflect the amount the Portfolio wouldreceive in U.S. dollars, had the Trustee sold anyparticular currency in the market. The value of theSecurities in terms of U.S. dollars, and therefore thevalue of your Units, will decline if the U.S. dollardecreases in value relative to the value of the currenciesin which the Securities trade.

Industry Risks. Each Portfol io may investsignificantly in certain industries. Any negative impacton the related industry will have a greater impact on the

value of Units than on a portfolio diversified over severalindustries. You should understand the risks of theseindustries before you invest.

The relative weighting or composition of yourPortfolio may change during the life of your Portfolio.Following the Initial Date of Deposit, the Sponsorintends to issue additional Units by depositing in yourPortfolio additional securities in a manner consistentwith the provisions described in the above sectionentitled “The Portfolios”. As described in that section, itmay not be possible to retain or continue to purchaseone or more Securities in your Portfolio. In addition, dueto certain limited circumstances described under“Portfolio Administration”, the composition of theSecurities in your Portfolio may change. Accordingly,the fluctuations in the relative weighting or compositionof your Portfolio may result in concentrations (25% ormore of a Portfolio’s assets) in securities of a particulartype, industry and/or geographic region. As of the InitialDate of Deposit, each Portfolio was significantlyinvested in the following, to the extent described below.

Consumer Discretionary and Consumer StaplesIssuers. Your Portfolio invests significantly in companiesthat manufacture or sell various consumer products.General risks of these companies include the overallstate of the economy, intense competit ion andconsumer spending trends. A decline in the economywhich results in a reduction of consumers’ disposableincome can negatively impact spending habits. Globalfactors including political developments, imposition ofimport controls, fluctuations in oil prices, and changesin exchange rates may adversely affect issuers ofconsumer products and services.

Competitiveness in the retail industry may requirelarge capital outlays for the installation of automatedcheckout equipment to control inventory, track the saleof items and gauge the success of sales campaigns.Retailers who sell their products over the Internet havethe potential to access more consumers, but mayrequire sophisticated technology to remain competitive.Changes in demographics and consumer tastes canalso affect the demand for, and the success of,consumer products and services in the marketplace.Consumer products and services companies may be

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subject to government regulation affecting theirproducts and operations which may negatively impactperformance. Tobacco companies may be adverselyaffected by new laws, regulations and litigation.

Financial Services Issuers. The Dividend SustainabilityStrategic Opportunity Portfolio invests significantly infinancial services companies. Companies in the financialservices industry include, but are not l imited to,companies involved in activities such as banking,mortgage finance, consumer finance, specializedfinance, industrial finance and leasing, investmentbanking and brokerage, asset management andcustody, corporate lending, insurance, and financialinvestment. In general, financial services issuers aresubstantially affected by changes in economic andmarket conditions, including: the liquidity and volatilitylevels in the global financial markets; interest rates, aswell as currency and commodities prices; investorsentiment; the rate of corporate and consumer defaults;inflation and unemployment; the availability and cost ofcapital and credit; exposure to various geographicmarkets or in commercial and residential real estate;competition from new entrants in their fields of business;extensive government regulation; and the overall healthof the U.S. and international economies. Due to the widevariety of companies in the financial services sector, theymay behave and react in different ways in response tochanges in economic and market conditions.

Companies in the financial services sector aresubject to several distinct risks. Such companies maybe subject to systematic risk, which may result due tofactors outside the control of a particular financialinstitution — like the failure of another, significantfinancial institution or material disruptions to the creditmarkets — that could adversely affect the ability of thefinancial institution to operate normally or may impair itsfinancial condition. Financial services companies aretypically affected by changes in interest rates, and maybe disproportionally affected as a result of volatile and/or rising interest rates.

Certain financial services companies may themselveshave concentrated portfolios, which makes themvulnerable to economic conditions that affect thatindustry. Companies in this sector are often subject to

credit r isk, meaning they may have exposure toinvestments or agreements which under certaincircumstances may lead to losses.

The financial services sector may be adverselyaffected by global developments including recessionaryconditions, deterioration in the credit markets andconcerns over sovereign debt. This may increase thecredit risk, and possibility of default, of bonds issued bysuch institutions faced with these problems. In addition,the liquidity of certain debt instruments may be reducedor eliminated due to the lack of available marketmakers. There can be no assurance that the risksassociated with investment in financial services issuerswill decrease even assuming that the U.S. and/orforeign governments and agencies take steps toaddress problems that may arise.

Most financial services companies are subject toextensive governmental regulation, which limits theiractivities and may affect their ability to earn a profit froma given line of business. This also exposes financialservices issuers to regulatory risk, where certainfinancial services companies may suffer setbacks ifregulators change the rules under which they operate.Challenging economic and political conditions, alongwith increased public scrutiny during the past severalyears, led to new legislation and increased regulation inthe U.S. and abroad, creating additional difficulties forf inancial inst itut ions. Regulatory init iat ives andrequirements that were proposed around the world maybe inconsistent or may conflict with previous regulationsto which financial services issuers were subject, therebyresulting in higher compliance and legal costs, as wellas the potential for higher operational, capital andliquidity costs. Proposed or enacted regulations mayfurther limit the amounts and types of loans and otherfinancial commitments certain financial services issuerscan make, and further, may limit the interest rates andfees they can charge, the prices they can charge andthe amount of capital they must maintain. These lawsand regulations may affect the manner in which aparticular financial institution does business and theproducts and services it may provide. Increasedregulation may restrict a company’s ability to competein its current businesses or to enter into or acquire new

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businesses. New regulations may reduce or limit acompany’s revenue or impose additional fees, limit thescope of their activities, increase assessments or taxeson those companies and intensify regulatorysupervision, adversely affecting business operations orleading to other negative consequences.

Among the most prominent p ieces of U.S.legislation following the 2008 financial crisis was theDodd-Frank Wal l Street Reform and ConsumerProtection Act (the “Dodd-Frank Act”), enacted intofederal law on July 21, 2010. The Dodd-Frank Actincluded reforms and refinements to modernizeexisting laws to address emerging risks and issues inthe nat ion’s evolv ing f inancia l system. I t a lsoestablished entirely new regulatory regimes, includingin areas such as systemic risk regulation, over-the-counter derivatives market oversight, and federalconsumer protection. The Dodd-Frank Act intendedto cover virtually al l participants in the financialservices industry for years to come, including banks,thrifts, depository institution holding companies,mortgage lenders, insurance companies, industrialloan companies, broker-dealers and other securitiesand investment advisory firms, private equity andhedge funds, consumers, numerous federal agenciesand the federal regulatory structure. In particular,certain provisions of the Dodd-Frank Act increasedthe capital requirements of certain financial servicescompanies supervised by the Federal Reserve,resulting in such companies incurring generally higherdeposit premiums. These types of regulatory changesled to some adverse effects on certain financialservices issuers and decreases in such issuers’profits or revenues.

The Economic Growth, Regulatory Relief andConsumer Protection Act (the “Relief Act”), enacted intofederal law on May 23, 2018, introduces changes onseveral aspects of the U.S. financial industry. The ReliefAct dilutes some of the stringent regulations imposedby the Dodd-Frank Act and aims to make things easierfor small- and medium-sized U.S. banks – however, allbanks will remain regulated. The Relief Act will relievesmall- and medium-sized banks from major regulatorycompliance costs linked with stricter scrutiny. The Relief

Act may lead to further deregulation and roll-back of theDodd-Frank Act and the Sponsor is unable to predictthe impact that such changes may have on financialservices issuers.

Financial services companies in foreign countries arealso subject to regulatory and interest rate concerns. Inparticular, government regulation in certain foreigncountries may include controls on interest rates, creditavai labi l i ty, pr ices and currency transfers. Thedeparture of any EU member from use of the Eurocould lead to serious disruptions to foreign exchanges,operations and settlements, which may have anadverse effect on financial services issuers. Morerecently, there is uncertainty regarding the state of theEU following the U.K.’s initiation on March 27, 2017, ofthe process to exit from the EU (“Brexit”). As of January31, 2020 the U.K. has officially exited the EU, thoughnegotiations are still ongoing. The effect that Brexit mayhave on the global financial markets or on the financialservices companies in your Portfolio is uncertain.

Commercial banks ( including “money center”regional and community banks), savings and loanassociations and holding companies of the foregoingare especially subject to adverse effects of volatileinterest rates, concentrations of loans in particularindustries or classifications (such as real estate, energy,or sub-prime mortgages), and significant competition.The profitability of these businesses is to a significantdegree dependent on the availability and cost of capitalfunds. Economic conditions in the real estate marketmay have a particularly strong effect on certain banksand savings associations. Commercial banks andsavings associations are subject to extensive federaland, in many instances, state regulation. Neither suchextensive regulation nor the federal insurance ofdeposits ensures the solvency or profitabil ity ofcompanies in this industry, and there is no assuranceagainst losses in securities issued by such companies.

Insurance companies are particularly subject togovernment regulation and rate setting, potentialantitrust and tax law changes, and industry-wide pricingand competit ion cycles. Property and casualtyinsurance companies also may be affected by weather,terrorism, long-term climate changes, and other

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catastrophes. Life and health insurance companies maybe affected by mortality and morbidity rates, includingthe effects of epidemics. Individual insurancecompanies may be exposed to reserve inadequacies,problems in investment portfolios (for example, realestate or “ junk” bond holdings) and fai lures ofreinsurance carriers.

Many of the investment considerations discussed inconnection with banks and insurance companies alsoapply to other financial services companies. Thesecompanies are subject to extensive regulation, rapidbusiness changes, and volatile performance dependenton the availability and cost of capital and prevailinginterest rates and significant competition. Generaleconomic condit ions signif icantly affect thesecompanies. Credit and other losses resulting from thefinancial difficulty of borrowers or other third partieshave a potentially adverse effect on companies in thisindustry. Investment banking, securities brokerage andinvestment advisory companies are particularly subjectto government regulation and the risks inherent insecurities trading and underwriting activities.

The financial condition of customers, clients andcounterparties, including other financial institutions,could adversely affect financial services issuers.Financial services issuers are interrelated as a result ofmarket making, trading, clearing or other counterpartyrelationships. Many of these transactions exposefinancial services issuers to credit risk as a result of theactions of, or deteriorat ion in, the commercialsoundness of other counterparty financial institutions.Economic and market conditions may increase creditexposures due to the increased risk of customer, clientor counterparty default. Downgrades to the creditratings of financial services issuers could have anegative effect on liquidity, cash flows, competitiveposition, financial condition and results of operations bysignificantly l imiting access to funding or capitalmarkets, increasing borrowing costs or triggeringincreased collateral requirements. Financial servicesissuers face significant legal risk, both from regulatoryinvestigations and proceedings, as well as privateactions. Profit margins of these companies continue toshrink due to the commoditization of tradit ional

businesses, new competitors, capital expenditures onnew technology and the pressure to compete globally.

Industrials Issuers. The Dividend SustainabilityStrategic Opportunity Portfolio invests significantly inindustrials companies. General risks of industrialscompanies include the general state of the economy,intense competition, imposition of import controls,volatility in commodity prices, currency exchange ratefluctuation, consolidation, labor relations, domestic andinternational politics, excess capacity and consumerspending trends. Companies in the industrials sectormay be adversely affected by liability for environmentaldamage and product liability claims. Capital goodscompanies may also be significantly affected by overallcapital spending and leverage levels, economic cycles,technical obsolescence, delays in modernization,limitations on supply of key materials, depletion ofresources, government regulations, governmentcontracts and e-commerce initiatives.

Industrials companies may also be affected byfactors more specific to their individual industries.Industrial machinery manufacturers may be subject todeclines in commercial and consumer demand and theneed for modernization. Aerospace and defensecompanies may be influenced by decreased demandfor new equipment, aircraft order cancellations,disputes over or ability to obtain or retain governmentcontracts, changes in government budget priorities,changes in aircraft-leasing contracts and cutbacks inprofitable business travel. The number of housingstarts, levels of public and nonresidential constructionincluding weakening demand for new office and retailspace, and overal l construction spending mayadversely affect construction materials and equipmentmanufacturers. Stocks of transportation companies arecyclical and can be significantly affected by economicchanges, fuel prices and insurance costs.Transportation companies in certain countries may alsobe subject to significant government regulation andoversight, which may negatively impact theirbusinesses.

Liquidity Risk. Liquidity risk is the risk that the valueof a security will fall if trading in the security is limited orabsent. The market for certain investments may become

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less liquid or illiquid due to adverse changes in theconditions of a particular issuer or due to adversemarket or economic conditions. In the absence of aliquid trading market for a particular security, the price atwhich such security may be sold to meet redemptions,as well as the value of the Units of your Portfolio, may beadversely affected. No one can guarantee that a liquidtrading market will exist for any security.

Legislation/Litigation. From time to time, variouslegislative initiatives are proposed in the United Statesand abroad which may have a negative impact oncertain of the companies represented in a Portfolio oron the tax treatment of your Portfolio or of yourinvestment in a Portfolio. In addition, litigation regardingany of the issuers of the Securities or of the industriesrepresented by these issuers may negatively impact theshare prices of these Securities. No one can predictwhat impact any pending or threatened litigation willhave on the share prices of the Securities.

No FDIC Guarantee. An investment in yourPortfolio is not a deposit of any bank and is not insuredor guaranteed by the Federal Deposit InsuranceCorporation or any other government agency.

PUBLIC OFFERING

General. Units are offered at the Public OfferingPrice which consists of the net asset value per Unitplus organization costs plus the sales charge. The netasset value per Unit is the value of the securities,cash and other assets in your Portfolio reduced bythe liabilities of the Portfolio divided by the total Unitsoutstanding. The maximum sales charge equals1.85% of the Public Offering Price per Unit (1.885%of the aggregate offering price of the Securities) at thetime of purchase.

The initial sales charge is the difference between thetotal sales charge amount (maximum of 1.85% of thePublic Offering Price per Unit) and the sum of theremaining fixed dollar deferred sales charge and thefixed dollar creation and development fee (initially $0.185per Unit). Depending on the Public Offering Price perUnit, you pay the initial sales charge at the time you buyUnits. The deferred sales charge is fixed at $0.135 per

Unit. Your Portfolio pays the deferred sales charge ininstallments as described in the “Fee Table.” If anydeferred sales charge payment date is not a businessday, we will charge the payment on the next businessday. If you purchase Units after the initial deferred salescharge payment, you will only pay that portion of thepayments not yet collected. If you redeem or sell yourUnits prior to collection of the total deferred salescharge, you will pay any remaining deferred sales chargeupon redemption or sale of your Units. The initial anddeferred sales charges are referred to as the“transactional sales charge.” The transactional salescharge does not include the creation and developmentfee which compensates the Sponsor for creating anddeveloping your Portfolio and is described under“Expenses.” The creation and development fee is fixedat $0.05 per Unit. Your Portfolio pays the creation anddevelopment fee as of the close of the initial offeringperiod as described in the “Fee Table.” If you redeem orsell your Units prior to collection of the creation anddevelopment fee, you will not pay the creation anddevelopment fee upon redemption or sale of your Units.After the initial offering period the maximum sales chargewill be reduced by 0.50%, reflecting the previouscollection of the creation and development fee. Becausethe deferred sales charge and creation and developmentfee are fixed dollar amounts per Unit, the actual chargeswill exceed the percentages shown in the “Fee Table” ifthe Public Offering Price per Unit falls below $10 and willbe less than the percentages shown in the “Fee Table” ifthe Public Offering Price per Unit exceeds $10. In noevent will the maximum total sales charge exceed1.85% of the Public Offering Price per Unit.

The “Fee Table” shows the sales charge calculationat a $10 Public Offering Price per Unit. At a $10 PublicOffering Price, there is no initial sales charge during theinitial offering period. If the Public Offering Priceexceeds $10 per Unit, you will pay an initial salescharge equal to the difference between the total salescharge and the sum of the remaining deferred salescharge and the creation and development fee. Forexample, if the Public Offering Price per Unit rose to$14, the maximum sales charge would be $0.259(1.85% of the Public Offering Price per Unit), consisting

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of an initial sales charge of $0.074, a deferred salescharge of $0.135 and the creation and developmentfee of $0.050.

Since the deferred sales charge and creation anddevelopment fee are fixed dollar amounts per Unit, yourPortfol io must charge these amounts per Unitregardless of any decrease in net asset value. However,if the Public Offering Price per Unit falls to the extentthat the maximum sales charge percentage results in adollar amount that is less than the combined fixed dollaramounts of the deferred sales charge and creation anddevelopment fee, your initial sales charge will be a creditequal to the amount by which these fixed dollar chargesexceed your sales charge at the time you buy Units. Insuch a situation, the value of securities per Unit wouldexceed the Public Offering Price per Unit by the amountof the initial sales charge credit and the value of thosesecurities will fluctuate, which could result in a benefit ordetriment to Unitholders that purchase Units at thatprice. The initial sales charge credit is paid by theSponsor and is not paid by the Portfolio. If the PublicOffering Price per Unit fell to $6, the maximum salescharge would be $0.111 (1.85% of the Public OfferingPrice per Unit), which consists of an initial sales charge(credit) of -$0.074, a deferred sales charge of $0.135and a creation and development fee of $0.050.

The actual sales charge that may be paid by aninvestor may differ slightly from the sales chargesshown herein due to rounding that occurs in thecalculation of the Public Offering Price and in thenumber of Units purchased.

The minimum purchase is 100 Units (25 Units forretirement accounts) but may vary by selling firm.Certain broker-dealers or selling firms may charge anorder handling fee for processing Unit purchases.

Reducing Your Sales Charge. The Sponsor offersways for you to reduce the sales charge that you pay. It isyour financial professional’s responsibility to alert theSponsor of any discount when you purchase Units.Before you purchase Units you must also inform yourfinancial professional of your qualification for any discountto be eligible for a reduced sales charge. Since thedeferred sales charges and creation and development

fee are fixed dollar amounts per Unit, your Portfolio mustcharge these amounts per Unit regardless of anydiscounts. However, if you are eligible to receive adiscount such that your total sales charge is less than thefixed dollar amounts of the deferred sales charges andcreation and development fee, you will receive a creditequal to the difference between your total sales chargeand these fixed dollar charges at the time you buy Units.

Fee Accounts. Investors may purchase Units throughregistered investment advisers, certified financialplanners and registered broker-dealers who in eachcase either charge periodic fees for brokerage services,f inancial planning, investment advisory or assetmanagement services, or provide such services inconnection with the establishment of an investmentaccount for which a comprehensive “fee based” charge(“Fee Based”) is imposed (“Fee Accounts”). If Units of aPortfolio are purchased for a Fee Account and thePortfolio is subject to a Fee Based charge (i.e., thePortfolio is “Fee Based Eligible”), then the purchase willnot be subject to the transactional sales charge but willbe subject to the creation and development fee of$0.05 per Unit that is retained by the Sponsor. Pleaserefer to the section called “Fee Accounts” for additionalinformation on these purchases. The Sponsor reservesthe right to limit or deny purchases of Units described inthis paragraph by investors or selling firms whosefrequent trading activity is determined to be detrimentalto a Portfolio. Fee Based Eligible Units are not eligiblefor any sales charge discounts in addition to that whichis described in this paragraph and under the “FeeAccounts” section found below.

Employees. Employees, officers and directors(including their spouses (or the equivalent if recognizedunder local law) and children or step-children under 21living in the same household, parents or step-parentsand trustees, custodians or fiduciaries for the benefit ofsuch persons) of Invesco Capital Markets, Inc. and itsaffiliates, and dealers and their affiliates may purchaseUnits at the Public Offering Price less the applicabledealer concession. All employee discounts are subjectto the pol icies of the related sel l ing f irm. Onlyemployees, officers and directors of companies that

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allow their employees to participate in this employeediscount program are eligible for the discounts.

Distribution Reinvestments. We do not charge anysales charge when you reinvest distributions from yourPortfolio into additional Units of your Portfolio. Since thedeferred sales charges and creation and developmentfee are fixed dollar amounts per unit, your Portfolio mustcharge these amounts per unit regardless of thisdiscount. If you elect to reinvest distributions, theSponsor will credit you with additional Units with adollar value sufficient to cover the amount of anyremaining deferred sales charge and creation anddevelopment fee that will be collected on such Units atthe time of reinvestment. The dollar value of these Unitswill fluctuate over time.

Unit Price. The Public Offering Price of Units willvary from the amounts stated under “EssentialInformation” in accordance with fluctuations in the pricesof the underlying Securities in the Portfolios. The initialprice of the Securities upon deposit by the Sponsor wasdetermined by the Trustee. The Trustee will generallydetermine the value of the Securities as of the EvaluationTime on each business day and will adjust the PublicOffering Price of Units accordingly. The Evaluation Timeis the close of the New York Stock Exchange on eachbusiness day. The term “business day”, as used hereinand under “Rights of Unitholders--Redemption of Units”,means any day on which the New York Stock Exchangeis open for regular trading. The Public Offering Price perUnit will be effective for all orders received prior to theEvaluation Time on each business day. Orders receivedby the Sponsor prior to the Evaluation Time and ordersreceived by authorized financial professionals prior to theEvaluation Time that are properly transmitted to theSponsor by the time designated by the Sponsor, arepriced based on the date of receipt. Orders received bythe Sponsor after the Evaluation Time, and ordersreceived by authorized financial professionals after theEvaluation Time or orders received by such persons thatare not transmitted to the Sponsor until after the timedesignated by the Sponsor, are priced based on thedate of the next determined Public Offering Price perUnit provided they are received timely by the Sponsor onsuch date. It is the responsibility of authorized financial

professionals to transmit orders received by them to theSponsor so they will be received in a timely manner.

The value of portfolio securities is based on thesecurities’ market price when available. When amarket pr ice is not readi ly avai lable, includingcircumstances under which the Trustee determinesthat a security’s market price is not accurate, aport fo l io secur i ty is valued at i ts fa i r value, asdetermined under procedures established by theTrustee or an independent pricing service used by theTrustee. In these cases, a Portfolio’s net asset valuewill reflect certain portfolio securities’ fair value ratherthan their market price. With respect to securities thatare primarily listed on foreign exchanges, the value ofthe portfolio securities may change on days when youwill not be able to purchase or sell Units. The value ofany foreign securities is based on the applicablecurrency exchange rate as of the Evaluation Time. TheSponsor will provide price dissemination and oversightservices to the Portfolios.

During the initial offering period, part of the PublicOffering Price represents an amount that will pay thecosts incurred in establishing your Portfolio. Thesecosts include the costs of preparing documents relatingto the Portfolio (such as the registration statement,prospectus, trust agreement and legal documents),federal and state registration fees, the initial fees andexpenses of the Trustee and the initial audit. YourPortfolio will sell securities to reimburse us for thesecosts at the end of the initial offering period or after sixmonths, if earlier. The value of your Units will declinewhen the Portfolio pays these costs.

Unit Distribution. Units will be distributed to thepublic by the Sponsor, broker-dealers and others at thePublic Offer ing Price. Units repurchased in thesecondary market, if any, may be offered by thisprospectus at the secondary market Public OfferingPrice in the manner described above.

Unit Sales Concessions. Brokers, dealers and otherswil l be al lowed a regular concession or agencycommission in connection with the distribution of Unitsduring the initial offering period of 1.25% of the PublicOffering Price per Unit.

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Volume Concession Based Upon Annual Sales. Asdescribed below, broker-dealers and other sellingagents may in certain cases be eligible for an additionalconcession based upon their annual eligible sales of allInvesco fixed income and equity unit investment trusts.Eligible sales include all units of any Invesco unitinvestment trust underwritten or purchased directly fromInvesco during a trust’s initial offering period. Forpurposes of this concession, trusts designated as either“Invesco Unit Trusts, Taxable Income Series” or“Invesco Unit Trusts, Municipal Series” are fixed incometrusts, and trusts designated as “Invesco Unit TrustsSeries” are equity trusts. In addition to the regularconcessions or agency commissions described abovein “Unit Sales Concessions” all broker-dealers and othersell ing firms wil l be eligible to receive additionalcompensation based on total initial offering period salesof all eligible Invesco unit investment trusts during theprevious consecutive 12-month period through the endof the most recent month. The Volume Concession, asapplicable to equity and fixed income trust units, is setforth in the following table:

Volume Concession ____________________ Total Sales Equity Trust Fixed Income (in millions) Units Trust Units______________________ ____________ ______________

$25 but less than $100 0.035% 0.035%$100 but less than $150 0.050 0.050$150 but less than $250 0.075 0.075$250 but less than $1,000 0.100 0.100$1,000 but less than $5,000 0.125 0.100$5,000 but less than $7,500 0.150 0.100$7,500 or more 0.175 0.100

Broker-dealers and other selling firms will not receivethe Volume Concession on the sale of units purchasedin Fee Accounts, however, such sales will be included indetermining whether a firm has met the sales levelbreakpoints set forth in the Volume Concession tableabove. Secondary market sales of all unit investmenttrusts are excluded for purposes of the VolumeConcession. Eligible dealer firms and other sellingagents include clearing firms that place orders withInvesco and provide Invesco with information withrespect to the representatives who initiated suchtransactions. Eligible dealer firms and other selling

agents will not include firms that solely provide clearingservices to other broker-dealer firms or firms who placeorders through clearing firms that are eligible dealers. Wereserve the right to change the amount of theconcessions or agency commissions from time to time.For a trust to be eligible for this additional compensation,the trust’s prospectus must include disclosure related tothis additional compensation.

Additional Information. Except as provided in thissection, any sales charge discount provided toinvestors will be borne by the selling broker-dealer oragent. For all secondary market transactions the totalconcession or agency commission will amount to 80%of the applicable sales charge. Notwithstandinganything to the contrary herein, in no case shall the totalof any concessions, agency commissions and anyadditional compensation allowed or paid to any broker,dealer or other distributor of Units with respect to anyindividual transaction exceed the total sales chargeapplicable to such transaction. The Sponsor reservesthe right to reject, in whole or in part, any order for thepurchase of Units and to change the amount of theconcession or agency commission to dealers andothers from time to time.

We may provide, at our own expense and out of ourown profits, additional compensation and benefits tobroker-dealers who sell Units of these Portfolios and ourother products. This compensation is intended to resultin additional sales of our products and/or compensatebroker-dealers and financial advisors for past sales. Wemay make these payments for marketing, promotionalor related expenses, including, but not limited to,expenses of entertaining retail customers and financialadvisors, advert ising, sponsorship of events orseminars, obtaining shelf space in broker-dealer firmsand similar activities designed to promote the sale ofthe Portfolios and our other products. Fees may includepayment for travel expenses, including lodging, incurredin connection with trips taken by invited registeredrepresentatives for meetings or seminars of a businessnature. These arrangements will not change the priceyou pay for your Units.

Sponsor Compensation. The Sponsor will receivethe total sales charge applicable to each transaction.

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Except as provided under “Unit Distribution,” any salescharge discount provided to investors will be borne bythe selling dealer or agent. In addition, the Sponsor willrealize a profit or loss as a result of the differencebetween the price paid for the Securities by theSponsor and the cost of the Securities to each Portfolioon the Initial Date of Deposit as well as on subsequentdeposits. See “Notes to Portfolios”. The Sponsor hasnot participated as sole underwriter or as manager oras a member of the underwriting syndicates or as anagent in a private placement for any of the Securities.The Sponsor may realize profit or loss as a result of thepossible fluctuations in the market value of Units heldby the Sponsor for sale to the public. In maintaining asecondary market, the Sponsor will realize profits orlosses in the amount of any difference between theprice at which Units are purchased and the price atwhich Units are resold (which price includes theapplicable sales charge) or from a redemption ofrepurchased Units at a price above or below thepurchase price. Cash, if any, made available to theSponsor prior to the date of settlement for the purchaseof Units may be used in the Sponsor’s business andmay be deemed to be a benefit to the Sponsor, subjectto the limitations of the Securities Exchange Act of1934, as amended (“1934 Act”).

The Sponsor or an affiliate may have participated in apublic offering of one or more of the Securities. TheSponsor, an affiliate or their employees may have a longor short position in these Securities or related securities.An affiliate may act as a specialist or market maker forthese Securities. An officer, director or employee of theSponsor or an affiliate may be an officer or director forissuers of the Securities.

Market for Units. Although it is not obligated to doso, the Sponsor may maintain a market for Units and topurchase Units at the secondary market repurchaseprice (which is described under “Right of Unitholders--Redemption of Units”). The Sponsor may discontinuepurchases of Units or discontinue purchases at thisprice at any time. In the event that a secondary marketis not maintained, a Unitholder will be able to dispose ofUnits by tendering them to the Trustee for redemptionat the Redemption Price. See “Rights of Unitholders--

Redemption of Units”. Unitholders should contact theirbroker to determine the best price for Units in thesecondary market. Units sold prior to the time the entiredeferred sales charge has been collected will beassessed the amount of any remaining deferred salescharge at the time of sale. The Trustee will notify theSponsor of any Units tendered for redemption. If theSponsor’s bid in the secondary market equals orexceeds the Redemption Price per Unit, i t maypurchase the Units not later than the day on whichUnits would have been redeemed by the Trustee. TheSponsor may sell repurchased Units at the secondarymarket Public Offering Price per Unit.

RETIREMENT ACCOUNTS

Units are available for purchase in connection withcertain types of tax-sheltered retirement plans, includingIndividual Retirement Accounts for individuals,Simplified Employee Pension Plans for employees,qualified plans for self-employed individuals, andqualified corporate pension and profit sharing plans foremployees. The minimum purchase for these accountsis reduced to 25 Units but may vary by selling firm. Thepurchase of Units may be l imited by the plans’provisions and does not itself establish such plans.

FEE ACCOUNTS

As described above, Units may be available forpurchase by investors in Fee Accounts where thePortfolio is Fee Based Eligible. You should consult yourfinancial professional to determine whether you canbenefit from these accounts. This table illustrates thesales charge you will pay if the Portfolio is Fee BasedEligible as a percentage of the initial Public OfferingPrice per Unit on the Initial Date of Deposit (thepercentage will vary thereafter).

Initial sales charge 0.00%Deferred sales charge 0.00 ______ Transactional sales charge 0.00% ______ ______Creation and development fee 0.50% ______ Total sales charge 0.50% ______ ______

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You should consult the “Public Offering--ReducingYour Sales Charge” section for specific information onthis and other sales charge discounts. That sectiongoverns the calculation of all sales charge discounts.The Sponsor reserves the r ight to l imit or denypurchases of Units in Fee Accounts by investors orsel l ing f irms whose frequent trading activity isdetermined to be detrimental to a Portfolio. To purchaseUnits in these Fee Accounts, your financial professionalmust purchase Units designated with one of the FeeBased CUSIP numbers set forth under “EssentialInformation,” either Fee Based Cash for cashdistributions or Fee Based Reinvest for the reinvestmentof distributions in additional Units, if available. See“Rights of Unitholders--Reinvestment Option.”

RIGHTS OF UNITHOLDERS

Distributions. Dividends and interest, net ofexpenses, and any net proceeds from the sale ofSecurities received by a Portfolio will generally bedistributed to Unitholders on each Distribution Date toUnitholders of record on the preceding Record Date.These dates appear under “Essential Information”.Distributions made by the securities in your Portfolioinclude ordinary income, but may also include sourcesother than ordinary income such as returns of capital,loan proceeds, short-term capital gains and long-termcapital gains (see “Taxation--Distributions”). In addition,the Portfolios will generally make required distributionsat the end of each year because each is structured as a“regulated investment company” for federal taxpurposes. Unitholders wi l l also receive a f inaldistribution of income when their Portfolio terminates. Aperson becomes a Unitholder of record on the date ofsettlement (generally two business days after Units areordered or any shorter period as may be required by theapplicable rules under the 1934 Act). Unitholders mayelect to receive distributions in cash or to havedistributions reinvested into additional Units. See“Rights of Unitholders--Reinvestment Option”.

Dividends and interest received by a Portfolio arecredited to the Income Account of the Portfolio. Otherreceipts (e.g., capital gains, proceeds from the sale ofSecurities, etc.) are credited to the Capital Account.

Proceeds received on the sale of any Securities, to theextent not used to meet redemptions of Units or paydeferred sales charges, fees or expenses, will bedistributed to Unitholders. Proceeds received from thedisposition of any Securities after a Record Date andprior to the following Distribution Date will be held in theCapital Account and not distributed until the nextDistribution Date. Any distribution to Unitholdersconsists of each Unitholder’s pro rata share of theavailable cash in the Income and Capital Accounts as ofthe related Record Date.

Historical and Estimated Distributions. TheHistorical 12 Month Distr ibutions per Unit, andEstimated Initial Distribution per Unit (if any), may beshown under “Essential Information.” These figures arebased upon the weighted average of the actualdistributions paid by the securities included in yourPortfolio over the 12 months preceding the Initial Dateof Deposit and are reduced to account for the effects offees and expenses which wil l be incurred wheninvesting in your Portfolio. While both figures arecalculated using a Public Offering Price of $10 per Unit,any presented Estimated Initial Distribution per Unit willreflect an estimate of the per Unit distributions you mayreceive on the first Distribution Date based upon eachissuer’s preceding 12 month distributions. Dividendpayments are not assured and therefore the amount offuture dividend income to your Portfolio is uncertain.The actual net annual distributions may decrease overtime because a portion of the securities included in yourPortfolio will be sold to pay for the organization costs,deferred sales charge and creation and developmentfee. Securities may also be sold to pay regular fees andexpenses during your Portfolio’s life. The actual netannual income distributions you receive will vary fromthe Historical 12 Month Distributions amount due tochanges in dividends and distribution amounts paid byissuers, currency fluctuations, the sale of securities topay any deferred sales charge, Portfolio fees andexpenses, and with changes in your Portfolio such asthe acquisition, call, maturity or sale of securities. Inaddition, due to the negative economic impact acrossmany industries caused by the recent COVID-19outbreak, certain issuers of the securities included in a

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Portfolio may elect to reduce the amount of, or cancelentirely, dividends and/or distributions paid in the future.As a result, the Historical 12 Month Distributions perUnit, and Estimated Initial Distribution per Unit (if any),shown under “Essential Information” will likely be higher,and in some cases significantly higher, than the actualdistributions achieved by a Portfolio. Due to these andvarious other factors, actual income received by yourPortfolio will most likely differ from the most recentdividends or scheduled income payments.

Reinvestment Option. Unitholders may havedistributions automatically reinvested in additional Unitswithout a sales charge (to the extent Units may belawfully offered for sale in the state in which theUnitholder resides). The CUSIP numbers for either“Cash” distributions or “Reinvest” for the reinvestmentof distr ibut ions are set forth under “Essent ia lInformation”. Brokers and dealers can use the DividendReinvestment Service through Depository TrustCompany (“DTC”) or purchase a Reinvest (or FeeBased Reinvest in the case of Fee Based Eligible Unitsheld in Fee Accounts) CUSIP, if available. To participatein this reinvestment option, a Unitholder must file withthe Trustee a written notice of election, together withany other documentation that the Trustee may thenrequire, at least five days prior to the related RecordDate. A Unitholder’s election will apply to all Unitsowned by the Unitholder and will remain in effect untilchanged by the Unitholder. The reinvestment option isnot offered during the 30 calendar days prior totermination. If Units are unavailable for reinvestment orthis reinvestment option is no longer avai lable,distributions will be paid in cash. Distributions will betaxable to Unitholders if paid in cash or automaticallyreinvested in additional Units. See “Taxation”.

A participant may elect to terminate his or herreinvestment plan and receive future distributions incash by notifying the Trustee in writing no later than fivedays before a Distribution Date. The Sponsor shallhave the r ight to suspend or terminate thereinvestment plan at any time. The reinvestment plan issubject to availability or limitation by each broker-dealeror sel l ing f i rm. Broker-dealers may suspend orterminate the offering of a reinvestment plan at any

time. Please contact your financial professional foradditional information.

Redemption of Units. All or a portion of your Unitsmay be tendered to The Bank of New York Mellon, theTrustee, for redemption at Unit Investment TrustDivision, 111 Sanders Creek Parkway, East Syracuse,New York 13057, on any day the New York StockExchange is open. No redemption fee will be chargedby the Sponsor or the Trustee, but you are responsiblefor applicable governmental charges, if any. Unitsredeemed by the Trustee will be canceled. You mayredeem all or a portion of your Units by sending arequest for redemption to your bank or broker-dealerthrough which you hold your Units. No later than twobusiness days (or any shorter period as may berequired by the applicable rules under the 1934 Act)following satisfactory tender, the Unitholder will beentitled to receive in cash an amount for each Unitequal to the Redemption Price per Unit next computedon the date of tender. The “date of tender” is deemed tobe the date on which Units are received by the Trustee,except that with respect to Units received by theTrustee after the Evaluation Time or on a day which isnot a business day, the date of tender is deemed to bethe next business day. Redemption requests receivedby the Trustee after the Evaluation T ime, andredemption requests received by authorized financialprofessionals after the Evaluation Time or redemptionrequests received by such persons that are nottransmitted to the Trustee until after the time designatedby the Trustee, are priced based on the date of the nextdetermined redemption price provided they are receivedtimely by the Trustee on such date. It is theresponsibility of authorized financial professionals totransmit redemption requests received by them to theTrustee so they will be received in a timely manner.Certain broker-dealers or selling firms may charge anorder handling fee for processing redemption requests.Units redeemed directly through the Trustee are notsubject to such fees.

Unitholders tendering 1,000 or more Units (or suchhigher amount as may be required by your broker-dealer or selling agent) for redemption may request anin kind distr ibution of Securit ies equal to the

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Redemption Price per Unit on the date of tender.Unitholders may not request an in kind distributionduring the initial offering period or within 30 calendardays of a Portfolio’s termination. The Portfolios generallywill not offer in kind distributions of portfolio securitiesthat are held in foreign markets. An in kind distributionwill be made by the Trustee through the distribution ofeach of the Securities in book-entry form to the accountof the Unitholder’s broker-dealer at DTC. Amountsrepresenting fractional shares will be distributed in cash.The Trustee may adjust the number of shares of anySecurity included in a Unitholder’s in kind distribution tofacilitate the distribution of whole shares. The in kinddistribution option may be modified or discontinued atany time without notice. Notwithstanding the foregoing,if the Unitholder requesting an in kind distribution is theSponsor or an affiliated person of the Portfolio, theTrustee may make an in kind distribution to suchUnitholder provided that no one with a pecuniaryincentive to influence the in kind distribution mayinfluence selection of the distributed securities, thedistribution must consist of a pro rata distribution of allportfolio securities (with limited exceptions) and the inkind distribution may not favor such affiliated person tothe detriment of any other Unitholder. Unitholders willincur transaction costs in liquidating securities receivedin an in-kind distribution, and any such securitiesreceived will be subject to market risk until sold. In theevent that any securities received in-kind are illiquid,Unitholders will bear the risk of not being able to sellsuch securities in the near term, or at all.

The Trustee may sell Securities to satisfy Unitredemptions. To the extent that Securit ies areredeemed in kind or sold, the size of a Portfolio will be,and the diversity of a Portfolio may be, reduced. Salesmay be required at a time when Securities would nototherwise be sold and may result in lower prices thanmight otherwise be realized. The price received uponredemption may be more or less than the amount paidby the Unitholder depending on the value of theSecurities at the time of redemption. Special federalincome tax consequences will result if a Unitholderrequests an in kind distribution. See “Taxation”.

The Redemption Price per Unit and the secondarymarket repurchase price per Unit are equal to the prorata share of each Unit in each Portfolio determined onthe basis of (i) the cash on hand in the Portfolio, (ii) thevalue of the Securities in the Portfolio and (iii) dividendsor other income distr ibutions receivable on theSecurities in the Portfolio trading ex-dividend as of thedate of computation, less (a) amounts representingtaxes or other governmental charges payable out of thePortfolio, (b) the accrued expenses of the Portfolio(including costs associated with liquidating securitiesafter the end of the initial offering period) and (c) anyunpaid deferred sales charge payments. During theinitial offering period, the redemption price and thesecondary market repurchase price will not be reducedby estimated organization costs or the creation anddevelopment fee. For these purposes, the Trustee willdetermine the value of the Securities as describedunder “Public Offering--Unit Price”.

The right of redemption may be suspended andpayment postponed for any period during which theNew York Stock Exchange is closed, other than forcustomary weekend and holiday closings, or any periodduring which the SEC determines that trading on thatExchange is restricted or an emergency exists, as aresult of which disposal or evaluation of the Securities isnot reasonably practicable, or for other periods as theSEC may permit.

Exchange Option. When you redeem Units of yourPortfol io or when your Portfol io terminates (see“Rollover” below), you may be able to exchange yourUnits for units of other Invesco unit trusts. You shouldcontact your financial professional for more informationabout trusts currently available for exchanges. Beforeyou exchange Units, you should read the prospectus ofthe new trust carefully and understand the risks andfees. You should then discuss this option with yourfinancial professional to determine whether yourinvestment goals have changed, whether current trustssuit you and to discuss tax consequences. A rollover orexchange is a taxable event to you. We maydiscontinue this option at any time.

Rollover. We may offer a subsequent series of eachPortfolio for a Rollover when the Portfolios terminate.

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On the Mandatory Termination Date you will have theoption to (1) participate in a Rollover and have yourUnits reinvested into a subsequent trust series or (2) receive a cash distribution.

If you elect to participate in a cash Rollover, yourUnits will be redeemed on the Mandatory TerminationDate. As the redemption proceeds become available,the proceeds (including dividends) will be invested in anew trust series at the public offering price for the newtrust. The Trustee will attempt to sell Securities to satisfythe redemption as quickly as practicable on theMandatory Termination Date. We do not anticipate thatthe sale period will be longer than one day, however,certain factors could affect the ability to sell theSecurities and could impact the length of the saleperiod. The liquidity of any Security depends on thedaily trading volume of the Security and the amountavailable for redemption and reinvestment on any day.

We may make subsequent trust series available forsale at various times during the year. Of course, wecannot guarantee that a subsequent trust or sufficientunits will be available or that any subsequent trusts willoffer the same investment strategies or objectives asthe current Portfolios. We cannot guarantee that aRol lover wi l l avoid any negative market priceconsequences resulting from trading large volumes ofsecurit ies. Market price trends may make itadvantageous to sell or buy securities more quickly ormore slowly than permitted by the Portfolio procedures.We may, in our sole discretion, modify a Rollover orstop creating units of a trust at any time regardless ofwhether al l proceeds of Unitholders have beenreinvested in a Rollover. If we decide not to offer asubsequent series, Unitholders will be notified prior tothe Mandatory Termination Date. Cash which has notbeen reinvested in a Rollover will be distributed toUnitholders shortly after the Mandatory TerminationDate. Rollover part icipants may receive taxabledividends or realize taxable capital gains which arereinvested in connection with a Rollover but may not beentitled to a deduction for capital losses due to the“wash sale” tax rules. Due to the reinvestment in asubsequent trust, no cash will be distributed to pay anytaxes. See “Taxation”.

Units. Ownership of Units is evidenced in book-entryform only and will not be evidenced by certificates. Unitspurchased or held through your bank or broker-dealerwill be recorded in book-entry form and credited to theaccount of your bank or broker-dealer at DTC. Units aretransferable by contacting your bank or broker-dealerthrough which you hold your Units. Transfer, and therequirements therefore, wil l be governed by theapplicable procedures of DTC and your agreement withthe DTC participant in whose name your Units areregistered on the transfer records of DTC.

Reports Provided. Unitholders will receive astatement of dividends and other amounts received bya Portfolio for each distribution. Within a reasonabletime after the end of each year, each person who was aUnitholder during that year will receive a statementdescribing dividends and capital received, actualPortfolio distributions, Portfolio expenses, a list of theSecurities and other Portfolio information. Unitholdersmay obtain evaluations of the Securities upon requestto the Trustee. If you have questions regarding youraccount or your Portfolio, please contact your financialadvisor or the Trustee. The Sponsor does not haveaccess to individual account information.

PORTFOLIO ADMINISTRATION

Portfolio Administration. The Portfolios are notmanaged funds and, except as provided in the TrustAgreement, Securities generally will not be sold orreplaced. The Sponsor may, however, direct thatSecurities be sold in certain limited circumstances toprotect the Portfol io based on advice from theSupervisor. These situations may include events suchas the issuer having defaulted on payment of any of itsoutstanding obligations or the price of a Security hasdeclined to such an extent or other credit factors existso that in the opinion of the Supervisor retention of theSecurity would be detrimental to the Portfolio. If a publictender offer has been made for a Security or a mergeror acquisition has been announced affecting a Security,the Trustee may either sell the Security or accept anoffer if the Supervisor determines that the sale orexchange is in the best interest of Unitholders. TheTrustee will distribute any cash proceeds to Unitholders.

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In addition, the Trustee may sell Securities to redeemUnits or pay Portfolio expenses or deferred salescharges. If securities or property are acquired by aPortfolio, the Sponsor may direct the Trustee to sell thesecurities or property and distribute the proceeds toUnitholders or to accept the securities or property fordeposit in the Portfolio. Should any contract for thepurchase of any of the Securities fail, the Sponsor will(unless substantially all of the moneys held in thePortfolio to cover the purchase are reinvested insubstitute Securities in accordance with the TrustAgreement) refund the cash and sales chargeattributable to the failed contract to all Unitholders on orbefore the next Distribution Date.

The Sponsor may direct the reinvestment ofproceeds of the sale of Securities if the sale is thedirect result of serious adverse credit factors which, inthe opinion of the Sponsor, would make retention ofthe Securities detrimental to your Portfolio. In such acase, the Sponsor may, but is not obligated to, directthe reinvestment of sale proceeds in any othersecurities that meet the criteria for inclusion in yourPortfolio on the Initial Date of Deposit. The Sponsormay also instruct the Trustee to take action necessaryto ensure that your Portfolio continues to satisfy thequalifications of a regulated investment company andto avoid imposition of tax on undistributed income ofthe Portfolio.

When your Portfolio sells Securities, the compositionand diversity of the Securities in the Portfolio may bealtered. In order to obtain the best price for a Portfolio, itmay be necessary for the Supervisor to specifyminimum amounts (generally 100 shares) in whichblocks of Securit ies are to be sold. In effectingpurchases and sales of portfolio securities, the Sponsormay direct that orders be placed with and brokeragecommissions be paid to brokers, including brokerswhich may be affiliated with the Portfolios, the Sponsoror dealers participating in the offering of Units.

Pursuant to an exemptive order, your Portfolio maybe permitted to sell Securities to a new trust when itterminates if those Securities are included in the newtrust. The exemption may enable your Portfolio toeliminate commission costs on these transactions. The

price for those securities will be the closing sale price onthe sale date on the exchange where the Securities areprincipally traded, as certified by the Sponsor.

Amendment of the Trust Agreement. TheTrustee and the Sponsor may amend the TrustAgreement without the consent of Unitholders tocorrect any provision which may be defective or tomake other provisions that will not materially adverselyaffect Unitholders (as determined in good faith by theSponsor and the Trustee). The Trust Agreement may notbe amended to increase the number of Units or permitacquisition of securities in addition to or substitution forthe Securit ies (except as provided in the TrustAgreement). The Trustee will notify Unitholders of anyamendment.

Termination. Your Portfolio will terminate on theMandatory Termination Date specified under “EssentialInformation” or upon the sale or other disposition of thelast Security held in the Portfolio. Your Portfolio may beterminated at any time with consent of Unitholdersrepresenting two-thirds of the outstanding Units or bythe Trustee when the value of the Portfolio is less than$500,000 ($3,000,000 if the value of the Portfolio hasexceeded $15,000,000) (the “Minimum TerminationValue”). Your Portfolio will be liquidated by the Trusteein the event that a sufficient number of Units of thePortfolio not yet sold are tendered for redemption bythe Sponsor, so that the net worth of the Portfoliowould be reduced to less than 40% of the value of theSecurities at the time they were deposited in thePortfolio. If your Portfolio is liquidated because of theredemption of unsold Units by the Sponsor, theSponsor will refund to each purchaser of Units theentire sales charge paid by such purchaser. TheTrustee may begin to sell Securities in connection witha Portfolio termination nine business days before, andno later than, the Mandatory Termination Date.Qualified Unitholders may elect an in kind distribution ofSecurities, provided that Unitholders may not requestan in kind distribution of Securities within 30 calendardays of a Portfolio’s termination. Any in kind distributionof Securities will be made in the manner and subject tothe restrictions described under “Rights of Unitholders--Redemption of Units”, provided that, in connection

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with an in kind distribution election more than 30calendar days pr ior to terminat ion, Unitholderstendering 1,000 or more Units of a Portfolio (or suchhigher amount as may be required by your broker-dealer or sel l ing agent) may request an in kinddistribution of Securities equal to the Redemption Priceper Unit on the date of tender. Unitholders will receive afinal cash distribution within a reasonable time after theMandatory Termination Date. All distributions will be netof Portfolio expenses and costs. Unitholders willreceive a f inal distr ibut ion statement fol lowingtermination. The Information Supplement containsfurther information regarding termination of yourPortfolio. See “Additional Information”.

Limitations on Liabilities. The Sponsor,Supervisor and Trustee are under no liability for takingany action or for refraining from taking any action ingood faith pursuant to the Trust Agreement, or for errorsin judgment, but shall be liable only for their own willfulmisfeasance, bad faith or gross negligence (negligencein the case of the Trustee) in the performance of theirduties or by reason of their reckless disregard of theirobligations and duties hereunder. The Trustee is notliable for depreciation or loss incurred by reason of thesale by the Trustee of any of the Securities. In the eventof the failure of the Sponsor to act under the TrustAgreement, the Trustee may act thereunder and is notliable for any action taken by it in good faith under theTrust Agreement. The Trustee is not liable for any taxesor other governmental charges imposed on theSecurities, on it as Trustee under the Trust Agreementor on a Portfolio which the Trustee may be required topay under any present or future law of the United Statesof America or of any other taxing authority havingjurisdiction. In addition, the Trust Agreement containsother customary provisions limiting the liability of theTrustee. The Sponsor and Supervisor may rely on anyevaluation furnished by the Trustee and have noresponsibility for the accuracy thereof. Determinationsby the Trustee shall be made in good faith upon thebasis of the best information available to it.

Sponsor. Invesco Capital Markets, Inc. is the Sponsorof your Portfolio. The Sponsor is a wholly ownedsubsidiary of Invesco Advisers, Inc. (“Invesco Advisers”).

Invesco Advisers is an indirect wholly owned subsidiaryof Invesco Ltd., a leading independent global investmentmanager that provides a wide range of investmentstrategies and vehicles to its retail, institutional and highnet worth clients around the globe. The Sponsor’sprincipal office is located at 11 Greenway Plaza, Houston,Texas 77046-1173. As of March 31, 2020, the totalstockholders’ equity of Invesco Capital Markets, Inc. was$90,225,420.57 (unaudited). The current assets undermanagement and supervision by Invesco Ltd. and itsaffiliates were valued at approximately $1,053.4 billion asof March 31, 2020.

The Sponsor and your Portfolio have adopted a codeof ethics requiring Invesco Ltd.’s employees who haveaccess to information on Portfolio transactions to reportpersonal securities transactions. The purpose of thecode is to avoid potential conflicts of interest and toprevent fraud, deception or misconduct with respect toyour Portfolio. The Information Supplement containsadditional information about the Sponsor.

If the Sponsor shall fail to perform any of its dutiesunder the Trust Agreement or become incapable ofacting or shall become bankrupt or its affairs are takenover by public authorities, then the Trustee may ( i ) appoint a successor Sponsor at rates ofcompensation deemed by the Trustee to be reasonableand not exceeding amounts prescribed by the SEC, (ii) terminate the Trust Agreement and liquidate thePortfolios as provided therein or (iii) continue to act asTrustee without terminating the Trust Agreement.

Trustee. The Trustee is The Bank of New YorkMellon, a trust company organized under the laws ofNew York. The Bank of New York Mellon has itsprincipal unit investment trust division offices at 2Hanson Place, 12th Floor, Brooklyn, New York 11217,(800) 856-8487. If you have questions regarding youraccount or your Portfolio, please contact the Trustee atits principal unit investment trust division offices or yourfinancial adviser. The Sponsor does not have access toindividual account information. The Bank of New YorkMellon is subject to supervision and examination by theSuperintendent of Banks of the State of New York andthe Board of Governors of the Federal Reserve System,and its deposits are insured by the Federal Deposit

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Insurance Corporation to the extent permitted by law.Additional information regarding the Trustee is set forthin the Information Supplement, including the Trustee’squalifications and duties, its ability to resign, the effectof a merger involving the Trustee and the Sponsor’sabi l i ty to remove and replace the Trustee. See“Additional Information”.

TAXATION

This section summarizes some of the principal U.S.federal income tax consequences of owning Units of thePortfolios. Tax laws and interpretations are subject tochange, possibly with retroactive effect. This summarydoes not describe all of the tax consequences to alltaxpayers. For example, this summary generally doesnot describe your situation if you are a corporation, anon-U.S. person, a broker/dealer, a tax-exempt entity,financial institution, person who marks to market theirUnits or other investor with special circumstances. Inaddition, this section does not describe your alternativeminimum, state, local or foreign tax consequences ofinvesting in the Portfolios.

This federal income tax summary is based in part onthe advice of counsel to the Sponsor. The InternalRevenue Service could disagree with any conclusionsset forth in this section. In addition, our counsel was notasked to review the federal income tax treatment of theassets to be deposited in your Portfolio.

Additional information related to taxes is contained inthe Information Supplement. As with any investment,you should seek advice based on your individualcircumstances from your own tax advisor.

Portfolio Status. Your Portfolio intends to elect and toqualify annually as a "regulated investment company"("RIC") under the federal tax laws. If your Portfolioqualifies under the tax law as a RIC and distributes itsincome in the manner and amounts required by the RICtax requirements, the Portfolio generally will not payfederal income taxes. But there is no assurance that thedistributions made by your Portfolio will eliminate alltaxes for every year at the level of your Portfolio.

Distributions. Portfolio distributions are generallytaxable. After the end of each year, you will receive a tax

statement reporting your Portfolio's distributions,including the amounts of ordinary income distributionsand capital gains dividends. Your Portfolio may maketaxable distributions to you even in periods during whichthe value of your Units has declined. Ordinary incomedistributions are generally taxed at your federal tax ratefor ordinary income, however, as further discussedbelow, certain ordinary income distributions receivedfrom your Portfolio may be taxed, under current federallaw, at capital gains tax rates. Certain ordinary incomedividends on Units that are attributable to qualifyingdividends received by your Portfolio from certaincorporations may be reported by the Portfolio as beingeligible for the dividends received deduction forcorporate Unitholders provided certain holding periodrequirements are met. Income from a Portfolio andgains on the sale of your Units may also be subject to a3.8% federal tax imposed on net investment income ifyour adjusted gross income exceeds certain thresholdamounts, which currently are $250,000 in the case ofmarried couples filing joint returns and $200,000 in thecase of single individuals. In addition, your Portfolio maymake distributions that represent a return of capital fortax purposes to the extent of the Unitholder's basis inthe Units, and any additional amounts in excess of basiswould be taxed as a capital gain. Generally, you willtreat all capital gains dividends as long-term capitalgains regardless of how long you have owned yourUnits. The tax status of your distributions from yourPortfolio is not affected by whether you reinvest yourdistributions in additional Units or receive them in cash.The income from your Portfolio that you must take intoaccount for federal income tax purposes is not reducedby amounts used to pay a deferred sales charge, if any.The tax laws may require you to treat certaindistributions made to you in January as if you hadreceived them on December 31 of the previous year.

A distribution paid by your Portfolio reduces thePortfolio's net asset value per Unit on the date paid bythe amount of the distribution. Accordingly, a distributionpaid shortly after a purchase of Units by a Unitholderwould represent, in substance, a partial return of capital,however, it would be subject to income taxes.

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Sale or Redemption of Units. If you sell or redeemyour Units, you will generally recognize a taxable gain orloss. To determine the amount of this gain or loss, youmust subtract your adjusted tax basis in your Units fromthe amount you receive for the sale of the Units. Yourinitial tax basis in your Units is generally equal to thecost of your Units, generally including sales charges. Insome cases, however, you may have to adjust your taxbasis after you purchase your Units.

Capital Gains and Losses and Certain OrdinaryIncome Dividends. Net capital gain equals net long-termcapital gain minus net short-term capital loss for thetaxable year. Capital gain or loss is long-term if theholding period for the asset is more than one year andis short-term if the holding period for the asset is oneyear or less. You must exclude the date you purchaseyour Units to determine your holding period. However, ifyou receive a capital gain dividend from your Portfolioand sell your Units at a loss after holding it for sixmonths or less, the loss will be recharacterized as long-term capital loss to the extent of the capital gaindividend received. The tax rates for capital gainsrealized from assets held for one year or less aregenerally the same as for ordinary income.

In certain circumstances, ordinary income dividendsreceived by an individual Unitholder from a RIC such asyour Portfolio may be taxed at the same federal ratesthat apply to net capital gain (as discussed above),provided certain holding period requirements aresatisfied and provided the dividends are attributable toqualified dividend income received by the Portfolio itself.Qualified dividend income means dividends paid to aPortfolio (a) by domestic corporations, (b) by foreigncorporations that are either ( i ) incorporated in apossession of the United States or (ii) are eligible forbenefits under certain income tax treaties with theUnited States that include an exchange of informationprogram, or (c) with respect to stock of a foreigncorporation that is readily tradeable on an establishedsecurities market in the United States. Both a Portfolioand the Unitholder must meet certain holding periodrequirements to qualify Portfolio dividends for thistreatment. Income derived from investments inderivatives, fixed-income securities, U.S. real estate

investment trusts, passive foreign investmentcompanies, and income received "in lieu of" dividends ina securities lending transactions generally is not eligiblefor treatment as qualified dividend income. If thequalified dividend income received by a Portfolio isequal to 95% (or a greater percentage) of the Portfolio'sgross income (exclusive of net capital gain) in anytaxable year, all of the ordinary income dividends paidby the Portfolio will be qualified dividend income. YourPortfolio will provide notice to its Unitholders of theamount of any distribution which may be taken intoaccount as qualified dividend income which is eligiblefor capital gains tax rates. There is no requirement thattax consequences be taken into account inadministering your Portfolio.

In Kind Distributions. Under certain circumstances,as described in this prospectus, you may receive an inkind distribution of Portfolio securities when you redeemyour Units. In general, this distribution will be treated asa sale for federal income tax purposes and you willrecognize gain or loss, based on the value at that timeof the securities and the amount of cash received, andsubject to certain limitations on the deductibility oflosses under the tax law.

Rollovers and Exchanges. If you elect to have yourproceeds from your Portfolio rolled over into a futuretrust, it would generally be considered a sale for federalincome tax purposes and any gain on the sale will betreated as a capital gain, and, in general, any loss will betreated as a capital loss. However, any loss realized ona sale or exchange will be disallowed to the extent thatUnits disposed of are replaced (including throughreinvestment of dividends) within a period of 61 daysbeginning 30 days before and ending 30 days afterdisposition of Units or to the extent that the Unitholder,during such period, acquires or enters into an option orcontract to acquire, substantially identical stock orsecurities. In such a case, the basis of the Unitsacquired will be adjusted to reflect the disallowed loss.The deductibility of capital losses is subject to otherlimitations in the tax law.

Deductibi l i ty of Portfol io Expenses. Expensesincurred and deducted by your Portfolio will generallynot be treated as taxable income to you. In certain

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cases if your Portfolio is not considered "publiclyoffered" under the Code, each U.S. Unitholder that iseither an individual, trust or estate will be treated ashaving received a taxable distribution from the Portfolioin the amount of that U.S. Unitholder's allocable shareof certain of the Portfolio's expenses for the calendaryear, and these fees and expenses will be treated asmiscellaneous itemized deductions of those U.S.Unitholders. The deductibility of expenses that arecharacterized as miscellaneous itemized deductions,which include investment expenses, is suspended fortax years beginning prior to January 1, 2026.

Foreign Investors. If you are a foreign investor (i.e., aninvestor other than a U.S. citizen or resident or a U.S.corporation, partnership, estate or trust), generally,subject to applicable tax treaties, distributions to youfrom your Portfolio will be characterized as dividends forfederal income tax purposes (other than dividends thatyour Portfolio reports as capital gain dividends) and willbe subject to U.S. income taxes, including withholdingtaxes, subject to certain exceptions described below.You may be eligible under certain income tax treaties fora reduction in withholding rates. However, distributionsreceived by a foreign investor from your Portfolio thatare properly reported by the trust as capital gaindividends, interest-related dividends paid by thePortfolio from its qualified net interest income from U.S.sources and short-term capital gain dividends, may notbe subject to U.S. federal income taxes, includingwithholding taxes, provided that your Portfolio makescertain elections and certain other conditions are met.

The Foreign Account Tax Compliance Act ("FATCA").A 30% withholding tax on your Portfolio's distributionsgenerally applies if paid to a foreign entity unless: (i) ifthe foreign entity is a "foreign financial institution" asdefined under FATCA, the foreign entity undertakescertain due diligence, reporting, withholding, andcertification obligations, (ii) if the foreign entity is not a"foreign financial institution," it identifies certain of itsU.S. investors or (iii) the foreign entity is otherwiseexcepted under FATCA. If required under the rulesabove and subject to the appl icabi l i ty of anyintergovernmental agreements between the UnitedStates and the relevant foreign country, withholding

under FATCA may apply. Under existing regulations,FATCA withholding on gross proceeds from the sale ofUnits and capital gain distributions from your Portfoliotook effect on January 1, 2019; however, recentlyproposed U.S. tax regulat ions el iminate FATCAwithholding on such types of payments. Taxpayersgeneral ly may rely on these proposed TreasuryRegulations until final Treasury Regulations are issued. Ifwithholding is required under FATCA on a paymentrelated to your Units, investors that otherwise would notbe subject to withholding (or that otherwise would beentitled to a reduced rate of withholding) on suchpayment generally will be required to seek a refund orcredit from the IRS to obtain the benefit of suchexemption or reduction. Your Portfolio will not pay anyadditional amounts in respect of amounts withheldunder FATCA. You should consult your tax advisorregarding the effect of FATCA based on your individualcircumstances.

Foreign Tax Credit. If your Portfolio invests in anyforeign securities, the tax statement that you receivemay include an item showing foreign taxes yourPortfolio paid to other countries. In this case, dividendstaxed to you will include your share of the taxes yourPortfolio paid to other countries. If more than 50% ofthe value of a Portfolio's total assets at the end of afiscal year is invested in foreign securities, the Portfoliomay elect to "pass-through" to the Unitholders theamount of foreign income tax paid by the Portfolio inlieu of deducting such amount in determining itsinvestment company taxable income. In such a case,Unitholders will be required (i) to include in grossincome, even though not actually received, theirrespective pro rata shares of the foreign income taxpaid by the Portfolio that are attributable to anydistributions they receive; and (ii) either to deduct theirpro rata share of foreign tax in computing their taxableincome or to use it (subject to various limitations) as aforeign tax credit against federal income tax (but notboth). No deduction for foreign tax may be claimed by anon-corporate Unitholder who does not itemizedeductions or who is subject to the alternative minimumtax. Unitholders may be unable to claim a credit for thefull amount of their proportionate shares of the foreign

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income tax paid by a Portfolio due to certain limitationsthat may apply. The Portfolios reserve the right not topass-through to its Unitholders the amount of foreignincome taxes paid by a Portfolio.

Backup Withholding. By law, your Portfolio mustwithhold as backup withholding a percentage (currently24%) of your taxable distributions and redemptionproceeds if you do not provide your correct socialsecurity or taxpayer identification number and certifythat you are not subject to backup withholding, or if theIRS instructs your Portfolio to do so.

Investors should consult their advisors concerningthe federal, state, local and foreign tax consequences ofinvesting in the Portfolio.

PORTFOLIO OPERATING EXPENSES

General. The fees and expenses of your Portfoliowill generally accrue on a daily basis. Portfolio operatingfees and expenses are generally paid out of the IncomeAccount to the extent funds are available, and then fromthe Capital Account. The deferred sales charge,creation and development fee and organization costsare generally paid out of the Capital Account of yourPortfolio. It is expected that Securities will be sold topay these amounts which will result in capital gains orlosses to Unitholders. See “Taxation”. These sales willreduce future income distributions. The Sponsor’s,Supervisor’s and Trustee’s fees may be increasedwithout approval of the Unitholders by amounts notexceeding proportionate increases under the category“Services Less Rent of Shelter” in the Consumer PriceIndex for All Urban Consumers or, if this category is notpublished, in a comparable category.

Organization Costs. You and the otherUnitholders will bear all or a portion of the organizationcosts and charges incurred in connection with theestablishment of your Portfolio. These costs andcharges will include the cost of the preparation, printingand execution of the trust agreement, registrationstatement and other documents relating to yourPortfolio, federal and state registration fees and costs,the initial fees and expenses of the Trustee, and legaland auditing expenses. The Public Offering Price of

Units includes the estimated amount of these costs.The Trustee will deduct these expenses from yourPortfolio’s assets at the end of the initial offering period.

Creation and Development Fee. The Sponsorwill receive a fee from your Portfolio for creating anddeveloping the Portfolio, including determining thePortfolio’s objectives, policies, composition and size,selecting service providers and information services andfor providing other similar administrative and ministerialfunctions. The creation and development fee is a chargeof $0.05 per Unit. The Trustee will deduct this amountfrom your Portfolio’s assets as of the close of the initialoffering period. No portion of this fee is applied to thepayment of distribution expenses or as compensationfor sales efforts. This fee will not be deducted fromproceeds received upon a repurchase, redemption orexchange of Units before the close of the initial publicoffering period.

Trustee’s Fee. For its services the Trustee willreceive the fee from your Portfolio set forth in the “FeeTable” (which includes the estimated amount ofmiscellaneous Portfolio expenses). The Trustee benefitsto the extent there are funds in the Capital and IncomeAccounts since these Accounts are non-interest bearingto Unitholders and the amounts earned by the Trusteeare retained by the Trustee. Part of the Trustee’scompensation for its services to your Portfolio isexpected to result from the use of these funds.

Compensation of Sponsor and Supervisor.The Sponsor and the Supervisor, which is an affiliate ofthe Sponsor, will receive the annual fees for providingbookkeeping and administrative services and portfoliosupervisory services set forth in the “Fee Table”. Thesefees may exceed the actual costs of providing theseservices to your Portfolio but at no time will the totalamount received for these services rendered to allInvesco unit investment trusts in any calendar yearexceed the aggregate cost of providing these servicesin that year.

Miscellaneous Expenses. The following additionalcharges are or may be incurred by your Portfolio:(a) normal expenses (including the cost of mailing reportsto Unitholders) incurred in connection with the operation

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of the Portfolio, (b) fees of the Trustee for extraordinaryservices, (c) expenses of the Trustee (including legal andauditing expenses) and of counsel designated by theSponsor, (d) various governmental charges, (e) expensesand costs of any action taken by the Trustee to protectthe Portfolio and the rights and interests of Unitholders,(f) indemnification of the Trustee for any loss, liability orexpenses incurred in the administration of the Portfoliowithout negligence, bad faith or willful misconduct on itspart, (g) foreign custodial and transaction fees (whichmay include compensation paid to the Trustee or itssubsidiaries or affiliates), (h) costs associated withliquidating the securities held in the Portfolio, (i) anyoffering costs incurred after the end of the initial offeringperiod and (j) expenditures incurred in contactingUnitholders upon termination of the Portfolio. EachPortfol io may pay the expenses of updating itsregistration statement each year. The DividendSustainability Strategic Opportunity Portfolio will pay alicense fee to S&P Opco, LLC for the use of certainservice marks and other intellectual property.

OTHER MATTERS

Legal Opinions. The legality of the Units offeredhereby has been passed upon by Morgan, Lewis &Bockius LLP. Dorsey & Whitney LLP has acted ascounsel to the Trustee.

Independent Registered Public AccountingFirm. The statements of condition and the relatedportfolios included in this prospectus have beenaudited by Grant Thornton LLP, independentregistered public accounting firm, as set forth in theirreport in this prospectus, and are included herein inreliance upon the authority of said firm as experts inaccounting and auditing.

ADDITIONAL INFORMATION

This prospectus does not contain all the informationset forth in the registration statements filed by yourPortfolio with the SEC under the Securities Act of 1933and the Investment Company Act of 1940 (file no. 811-02754). The Information Supplement, which has beenfiled with the SEC and is incorporated herein by

reference, includes more detailed information concerningthe Securities, investment risks and general informationabout the Portfolios. Reports and other informationabout your Portfolio are available on the EDGARDatabase on the SEC’s Internet site athttp://www.sec.gov. Copies of this information may beobtained, after paying a duplication fee, by electronicrequest at the fol lowing e-mail address:publicinfo@sec.gov or by writing the SEC’s PublicReference Section, Washington, DC 20549-0102.

TABLE OF CONTENTS

Title Page

Dividend Sustainability Strategic Opportunity Portfolio ......................................................... 2

Global High Dividend Portfolio ........................... 6Notes to Portfolios ............................................. 9Report of Independent Registered

Public Accounting Firm .................................. 10Statements of Condition ................................... 11The Portfolios .................................................... A-1Objectives and Securities Selection ................... A-2Risk Factors ...................................................... A-3Public Offering ................................................... A-9Retirement Accounts ......................................... A-13Fee Accounts .................................................... A-13Rights of Unitholders ......................................... A-14Portfolio Administration...................................... A-17Taxation ............................................................. A-20Portfolio Operating Expenses............................. A-23Other Matters .................................................... A-24Additional Information ........................................ A-24

______________When Units of the Portfolios are no longer available thisprospectus may be used as a preliminary prospectus for afuture Portfolio. If this prospectus is used for future Portfoliosyou should note the following:

The information in this prospectus is not complete with respectto future Portfolio series and may be changed. No person maysell Units of future Portfolios until a registration statement isfiled with the Securities and Exchange Commission and iseffective. This prospectus is not an offer to sell Units and is notsoliciting an offer to buy Units in any state where the offer orsale is not permitted.

U-EMSPRO2055

PROSPECTUS

May 21, 2020

Dividend Sustainability StrategicOpportunity Portfolio 2020-2

Global High Dividend Portfolio 2020-2

Please retain this prospectus for future reference.

INVESCO