Invesco Unit Trusts

Preferred Opportunity Portfolio, Series 19 A specialty unit trust

Trust specifi cs Objective Deposit information The portfolio seeks an attractive level of current income. The portfolio seeks to achieve its objective by Public offering price per unit1 $10.00 investing in a portfolio consisting of preferred securities. The portfolio was selected by Cohen & Steers Capital Management, Inc. (“Cohen & SteersSM”), as the portfolio consultant. Minimum investment ($250 for IRAs)2 $1,000.00 Deposit date 08/17/12 Portfolio Composition (As of day of deposit) Termination date 11/20/15 Banking American International Group, Inc.—Series A-4 AFF Distribution date 10/25/12 monthly thereafter Barclays plc—Series 3 BCS a Arch Capital Group, Ltd.—Series C ARH c Record date 10/10/12 monthly thereafter BB&T Corporation—Series E BBT e Aspen Holdings, Ltd. AHL b Term of trust 39 months Capital XIII C n Aviva plc AVV NASDAQ symbol VPFOPX Contingent Capital Trust III DTK Axis Capital Holdings, Ltd.—Series C AXS c Estimated net annual income per unit† $0.56838 First Niagara Financial Group, Inc.—Series B FNFG b Endurance Specialty Holdings, Ltd.—Series B ENH b Daily liquidity3 First Republic Bank—Series A FRC a Hartford Group, Inc. HGH First Republic Bank—Series B FRC b Principal Financial Group, Inc.—Series B PFG b Sales charge4 Group, Inc. GSF Protective Life Corporation PL c Initial sales charge 1.00% HSBC Holdings plc—Series 2 HCS b Other Deferred sales charge 2.00 ING Groep N.V. ISF Stanley Black & Decker, Inc. SWJ Creation and development fee 0.50 plc LYG a Real estate Total sales charge 3.50 PNC Financial Services Group, Inc.—Series P PNC p CommonWealth REIT—Series D CWH d Last deferred sales charge payment date 5/10/13 Raymond James Financial, Inc. RJD Corporate Offi ce Properties Trust—Series L OFC l U.S. Bancorp—Series F USB m PFOP19 CUSIPs Kimco Realty Corporation—Series I KIM i U.S. Bancorp—Series G USB n Cash 92121W-22-5 National Retail Properties, Inc.—Series D NNN d and Company—Series J WFC j Reinvest 92121W-23-3 PS Business Parks, Inc.—Series T PSB t Wrap fee cash 92121W-24-1 Electric utility Regency Centers Corporation—Series 6 REG f Wrap fee reinvest 92121W-25-8 Entergy Louisiana, LLC ELJ Taubman Centers, Inc.—Series J TCO j Investors in fee-based accounts will not be assessed the initial Nextera Energy Capital—Series H NEE h Vornado Realty Trust—Series K VNO k and deferred sales charge for eligible fee-based purchases SCE Trust I SCE f Telecommunications and must purchase units with a Wrap Fee CUSIP. Financial Qwest Corporation CTU Breakpoint information* Affi liated Managers Group, Inc. MGR United States Cellular Corporation UZA Transaction amount Sales charge Insurance Less than $50,000 3.50% Aegon N.V. AEV $50,000 – $99,999 3.25 American Financial Group, Inc. AFW $100,000 – $249,999 3.00 The trust portfolio is provided for informational purposes only and should not be deemed as a recommendation to buy or sell the individual securities shown above. $250,000 – $499,999 2.75 $500,000 – $999,999 2.50 $1,000,000 or more 1.55 Portfolio diversifi cation** Standard & Poor's Ratings Rollover or exchange 2.50 As of the business day before deposit date As of the business day before deposit date** Wrap fee 0.50 Banking 34.56% * Please consult the prospectus for details on all discounts. A- 7.51% ** As of 08/16/12 and may vary thereafter Electric utility 11.49% BB 3.99% 1 Including sales charges. As of deposit date. Financial 2.99% BBB 32.28% 2 Represents the value of 100 units on the deposit date. Insurance 19.48% The value of the minimum investment amount of 100 BBB+ 16.30% units may be greater or less than $1,000.00 following the Other 5.52% BB+ 8.75% deposit date. Real estate 16.99% 3 Funds will typically be mailed within three business days BBB- 26.41% after your redemption request is received. Telecommunications 8.97% Baa2* 1.51% 4 Assuming a public offering price of $10 per unit. NR 3.25% Diversifi cation does not guarantee a profi t or eliminate the risk of loss. Source: Bloomberg L.P. Source: Standard and Poor’s and Moody's Investors Service, Inc. denoted by* Risk considerations There is no assurance the trust will achieve its investment objective. An investment in this unit investment trust is subject to market risk, which is the possibility that the market values of securities owned by the trust will decline and that the value of trust units may therefore be less than what you paid for them. This trust is unmanaged and its portfolio is not intended to change during the trust’s life except in limited circumstances. Accordingly, you can lose money investing in this trust. An investment in the trust should be made with an understanding of the risks associated with an investment in a portfolio of preferred securities, such as the inability of the issuer to pay the principal of or income on a security when due, volatile interest rates, early call provisions and changes to the tax status of the securities. The portfolio will receive early returns of principal if securities are called or sold before the portfolio termination. If this happens your portfolio income will decline and you may not be able to reinvest the money you receive at as high a yield. In addition, the value of your units may decline if any portfolio securities trading at a premium are called at par. Certain preferred securities in the portfolio are rated below investment grade and considered to be “junk” securities. These securities are considered to be speculative and are subject to greater market and credit risks. Accordingly, the risk of default is higher than with investment grade securities. In addition, these securities may be more sensitive to interest rate changes and may be more likely to make early returns of principal. The portfolio invests exclusively in preferred securities, including hybrid and trust preferred securities. Hybrid-preferred securities are preferred securities typically issued by corporations, generally in the form of interest-bearing notes or preferred securities and may be perpetual in duration or may have a stated maturity. Trust preferred securities are similar to hybrid securities, but are typically issued by an affiliated business trust of a corporation, generally in the form of beneficial interests in subordinated debentures or similarly structured securities. Preferred securities do not generally have the growth potential of common stocks. They are also sensitive to interest rate changes and the market price generally falls with rising interest rates. In addition, they are more likely to be called for redemption in a declining interest rate environment. In the event of an issuer’s bankruptcy, preferred securities will not be repaid until the issuer’s other debt securities, which have priority, have been satisfied. Income payments on certain preferred securities may generally be deferred without default, although such payments will continue to accrue until paid. The trust is concentrated in and other companies in the financial services industry and may present more risk than a more diversified investment. There are certain risks specific to the financial services sector, including the potential adverse effects of economic recession, volatile interest rates, and state and federal regulations. Securities of foreign companies held by the funds in the portfolio present risks beyond those of U.S. issuers. These risks may include company’s foreign market, international trade conditions, less regulation, smaller or less liquid markets, increased volatility, differing accounting practices and changes in the value of foreign currencies. Opinions and forecasts expressed by Cohen & Steers Capital Management Inc. are not necessarily those of Van Kampen Funds Inc., and may not actually come to pass. Cohen & Steers is the property of Cohen & Steers Capital Management Inc., which is not affiliated with Invesco. Cohen & Steers Capital Management Inc., is being paid a license fee for the use of certain service marks and is also being compensated for portfolio consultant services, including selection of closed-end funds for the trust. A credit rating is an assessment provided by a nationally recognized statistical rating organization (NRSRO) of the creditworthiness of an issuer with respect to debt obligations, including specific securities, money market instruments or other debts. Ratings are measured on a scale that generally ranges from AAA/Aaa (highest) to D/C (lowest); ratings are subject to change without notice. For more information on Standard and Poor’s rating methodology, please visit www. standardandpoors.com and select “Understanding Ratings” under Rating Resources on the homepage. † The Estimated Net Annual Income per unit on the reverse side of this page is as of 08/16/12 is based on the most recently declared quarterly dividends, interim and fi nal dividends accounting for any foreign withholding taxes or scheduled income payments, but may also be based upon several recently declared dividends or interest payments. The actual net annual income distributions you receive will vary from the estimate set forth above with changes in the portfolio’s fees and expenses, in income received, currency fl uctuations and with the call, maturity or sale of securities. The actual net annual distributions are expected to decrease over time because a portion of the securities included in the portfolio will be sold to pay for organization costs. Securities may also be sold to pay regular fees and expenses during the portfolio’s life.

Before investing, investors should carefully read the prospectus and consider the investment objectives, risks, charges and exp enses. For this and more complete information about the trust, investors should ask their advisor(s) for a prospectus or download one at invesco.com/uit. Invesco's history of offering unit investment trusts was acquired through its predecessor firm, Van Kampen Funds Inc., in June 2010 by Invesco Ltd. Invesco unit investment trusts are distributed by the sponsor, Van Kampen Funds Inc., and broker dealers including Invesco Distributors, Inc. Both firms are wholly owned, indirect subsidiaries of Invesco Ltd. Preferred Opportunity Portfolio, Series 19 invesco.com/uit U-PFOP19-FCT-1 08/12 11931 Invesco Distributors, Inc.