Invesco PowerShares' Flagship ETF Crosses 5-Year Mark, Achieving Above-Average Performance and Zero Cap-Gains Distributions

CHICAGO, IL--(Marketwire - May 22, 2008) - Invesco PowerShares Capital Management LLC, a leading provider of exchange-traded funds (ETFs), announced today that on May 1, 2008, the PowerShares Dynamic Market Portfolio (AMEX: PWC) celebrated its five-year anniversary. Since its inception through May 1, 2008, PWC outpaced the S&P 500® Index by a cumulative 21.76% and the Lipper Multi-Cap Core Mutual Fund Average by a cumulative 14.25%, without distributing a capital gain to its shareholders.

"We are proud to commemorate the five-year anniversary of the first PowerShares ETF, and the Intellidex upon which it is based," said Bruce Bond, president and CEO of Invesco PowerShares. "A truly pioneering Fund, PWC marked the ETF industry's expansion beyond traditional benchmarking and toward intelligent indexing. Over the past five years, PWC's outperformance against its benchmark and the fact it has made no capital-gains distributions illustrate the market-changing force of the PowerShares Intelligent ETF offerings."

For the five-year period ended May 1, 2008:

PowerShares Dynamic Market Portfolio (AMEX: PWC) had an annualized return of 13.38% and cumulative return of 87.36%, outperforming the S&P 500, that had an annualized return of 10.61% and cumulative return of 65.60%, and the Lipper Multi-Cap Core Mutual Fund Average which had an annualized return of 11.60% and cumulative return of 73.11%. This performance was achieved with similar risk characteristics as the market, as the fund had a beta of 1.02 for the five-year period.

As of March 31, 2008, the fund's standardized performance for the one-year period was -9.34% and 12.24% since inception. Performance data quoted represents past performance. As stated in the Fund's prospectus, the gross annual fund operating expense ratio was 0.62%. However, the Advisor has contractually agreed to waive fees and/or pay certain Fund expenses which resulted in a lower fee actually paid by investors. These waivers and reimbursement contracts are reviewed by the Board annually and extend through at least April 30, 2008. Past performance is not a guarantee of future results; current performance may be higher or lower than performance quoted. Investment returns and principal value will fluctuate and Shares, when redeemed, may be worth more or less than their original cost. The Shares' performance reflects fee waivers, absent which performance would have been lower. See invescopowershares.com to find the most recent month-end performance numbers. After Tax Held represents total return after taxes on distributions and assumes Shares have not been sold. After Tax Sold represents total return after taxes on distributions and the sale of Fund Shares. After-tax returns reflect the highest federal income tax rate but exclude state and local taxes.

Please see the standardized performance table below for complete performance information.

The PowerShares Dynamic Market Portfolio (AMEX: PWC), along with the family of 39 other Dynamic ETFs, seek to provide alpha through a patented, enhanced indexing methodology. The AMEX Intellidex® Methodology ("Intellidex") is a quantitative, rules-based selection process that evaluates companies based on a variety of investment merit criteria, including fundamental growth, stock valuation, investment timeliness and risk factors, rather than by market-cap alone.

Additionally, 100% of the three Broad Market Intellidexes and 75% of the 21 Style and Sector Intellidexes have outperformed their respective benchmarks over the past five years.

"The success of the Intellidex illustrates this methodology's ability to provide investors with long-term alpha," said John Southard, Managing Director, Portfolio Strategies of Invesco PowerShares.

Performance Summary


Initial 5-Year Period
5/01/2003 - 4/30/2008
                                                                5 Year
PowerShares Dynamic Market Portfolio     1 Year     3 Year     Inception
------------------------------------     ------     ------     ---------
PWC - NAV                                -7.68%     27.94%       87.51%
PWC - Share Price                        -7.70%     27.98%       87.36%
S&P 500 Index                            -4.68%     26.76%       65.60%
Russell 3000                             -5.16%     28.21%       71.60%


Standardized Performance
5/01/2003 - 3/31/2008

PowerShares Dynamic Market Portfolio     1 Year     3 Year     Inception
------------------------------------     ------     ------     ---------
PWC - NAV                                -9.34%      5.15%       12.24%
PWC - Share Price                        -9.31%      5.16%       12.24%
S&P 500 Index                            -5.08%      5.84%        9.74%
Russell 3000                             -6.06%      6.10%       10.51%

Source: Invesco PowerShares Capital Management LLC

Invesco PowerShares is leading the intelligent ETF revolution through its family of more than 100 domestic, international and active exchange-traded funds. With assets under management of $12.75 billion, PowerShares ETFs trade on all of the major U.S. stock exchanges that trade ETFs. For more information, please visit us at www.invescopowershares.com.

Invesco PowerShares is a part of Invesco Ltd., a leading independent global investment management company dedicated to helping people worldwide build their financial security. By delivering the combined power of its distinctive worldwide investment management capabilities, including AIM, Atlantic Trust, Invesco, Perpetual, PowerShares, Trimark, and WL Ross, Invesco provides a comprehensive array of enduring investment solutions for retail, institutional and high-net-worth clients around the world. Operating in 20 countries, the company is currently listed on the New York Stock Exchange under the symbol IVZ. Additional information is available at www.invesco.com.

Important Risk Information

There are risks involved with investing in ETFs, including possible loss of money. The Fund is not actively managed and is subject to risk similar to stocks. Shares are subject to risks including those associated with investing in small and medium-sized companies, foreign securities and industry-specific risk. Please see the prospectus for more complete information regarding an investment in the Fund. The Industry Intellidex family of indexes has been left out of the comparison due to lack of available benchmarks.

Shares are not FDIC insured, may lose value and have no bank guarantee.

Shares are not individually redeemable and owners of the shares may acquire those shares from the Fund and tender those shares for redemption to the Fund in Creation Unit aggregations only, typically consisting of 100,000 shares.

Invesco Aim Distributors, Inc. is the distributor of the PowerShares Exchange-Traded Fund Trust.

Invesco PowerShares Capital Management LLC., Invesco Aim Distributors, Inc. and Invesco Institutional (N.A.), Inc. are indirect, wholly owned subsidiaries of Invesco Ltd.

An investor should consider the Fund's investment objective, risks, charges and expenses carefully before investing. For this and more complete information about the Fund call 800.983.0903 or visit the website www.invescopowershares.com for a prospectus. Please read the prospectus carefully before investing.

Contact Information: Media Contacts: Kristin Sadlon Porter Novelli 212-601-8192 Bill Conboy BC Capital Partners 303-415-2290