CHICAGO, IL–(EMWNews – August 7, 2008) – Invesco PowerShares Capital Management LLC, a

leading provider of exchange-traded funds (ETFs), announced today that the

trailing three-year performance of its Dynamic Large Cap Value Portfolio

(PWV) and Dynamic Mid Cap Growth Portfolio (PWJ) have outperformed their

index peers and earned five-star ratings from Morningstar.*

“Our proud celebration of these funds’ three-year anniversary is improved

as we recognize their compelling performance and five-star ratings from

Morningstar,” said Bruce Bond, president and CEO of Invesco PowerShares.

“Both PWV and PWJ are based on quantitative, rules-based Intellidexes

designed to maximize the potential for outperformance. Invesco PowerShares

is committed to delivering value and market-leading ideas to investors, as

we seek to enhance their portfolios with our pioneering family of ETFs.”

Invesco PowerShares is a chief participant in the evolution of the ETF

industry — helping move the industry beyond traditional benchmarking —

and toward intelligent indexing. The Invesco PowerShares family of

intelligent ETFs currently includes 43 Dynamic Intellidex-based portfolios

that seek to evaluate securities for their investment merit.

During the three-year period ended June 30, 2008:

PowerShares Dynamic Large Cap Value Portfolio (AMEX: PWV) had an annualized

return of 7.65% and cumulative return of 24.75%, outperforming the S&P

500® Index with an annualized return of -13.11% and cumulative return of

13.79%. For the three-year period ended June 30, 2008, the PowerShares

Dynamic Large Cap Value Portfolio earned a Morningstar Rating™ of five

stars when compared to the 1,183 U.S.-domiciled large value funds.*

PowerShares Dynamic Mid Cap Growth Portfolio (AMEX: PWJ) had an annualized

return of 12.58% and cumulative return of 42.69%, outperforming the S&P 500

Index with an annualized return of -13.11% and cumulative return of 13.79%.

For the three-year period ending June 30, 2008, the PowerShares Dynamic Mid

Cap Growth Portfolio earned a Morningstar Rating™ of five stars when

compared to the 813 U.S.-domiciled mid-cap growth funds.

Ratings are based on a risk-adjusted return measure that accounts for

variation in a fund’s monthly performance (including the effect of sales

charges, loads and redemption fees), placing more emphasis on downward

variations and rewarding consistent performance. The overall rating is

derived from a weighted average of three-, five- and 10-year rating

metrics, as applicable.

Standardized Performance

3/03/2005 - 6/30/2008

                                       

PowerShares Dynamic Large Cap Value    1 Year     3 Year   Inception

------------------------------------   --------   -------  ---------

PWV - NAV                                -11.95%     7.65%      7.29%

PWV - Share Price                        -12.38%     7.60%      7.23%

S&P 500 Index                            -13.11%     4.40%      3.82%

Russell 1000 Value                       -18.78%     3.53%      3.25%





                                       

PowerShares Dynamic Mid Cap Growth     1 Year     3 Year   Inception

------------------------------------   --------   -------  ---------

PWJ - NAV                                 -1.92%    12.58%     12.09%

PWJ - Share Price                         -2.01%    12.57%     12.02%

S&P 500 Index                            -13.11%     4.40%      3.82%

Russell Midcap Growth                     -6.42%     8.19%      7.96%

The PowerShares Dynamic Large Cap Value Portfolio (PWV) is based on the

Dynamic Large Cap Value Intellidex, which seeks to provide capital

appreciation while maintaining consistent and accurate style exposure. The

Style Intellidexes apply a rigorous 10-factor, style-isolation process to

objectively segregate companies into their appropriate investment style and

size universe. Next, each company is thoroughly evaluated to determine its

investment merit by analyzing numerous unique financial characteristics

from four broad financial perspectives: fundamental, valuation, timeliness

and risk.

The PowerShares Dynamic Mid Cap Growth Portfolio (PWJ) is based on the

Dynamic Mid Cap Growth Intellidex, which seeks to provide capital

appreciation while maintaining consistent and accurate style exposure. The

Style Intellidexes apply a rigorous 10-factor, style-isolation process to

objectively segregate companies into their appropriate investment style and

size universe. Next, each company is thoroughly evaluated to determine its

investment merit by analyzing numerous unique financial characteristics

from four broad financial perspectives: fundamental, valuation, timeliness

and risk.

Shares are subject to risks including: Small and Medium-Sized Company Risk

— investing in securities of small and medium-sized companies involves

greater risk than is customarily associated with investing in more

established companies.

The value of the stocks in the Index is likely to be more volatile than

stocks of other issues. Investors in the Fund should anticipate that the

value of their Shares will increase or decrease in value more or less in

correlation with increases or decreases in the value of the Intellidex.

Invesco PowerShares is leading the intelligent ETF revolution through its

family of more than 100 domestic and international index-based and actively

managed exchange-traded funds. With assets under management as of June 30,

2008 of $14 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.

*©2008 Morningstar Inc. All rights reserved. The information contained

herein is proprietary to Morningstar and/or its content providers. It may

not be copied or distributed and is not warranted to be accurate, complete

or timely. Neither Morningstar nor its content providers are responsible

for any damages or losses arising from any use of this information. Past

performance does not guarantee future results. The PowerShares Dynamic

Large Cap Value Fund received five stars for three years. The fund was

rated among 1,183 U.S.-domiciled large value funds over three years. The

PowerShares Dynamic Mid Cap Growth Fund received five stars for three

years. The fund was rated among 813 U.S.-domiciled mid-cap growth funds

over three years. Ratings are as of June 30, 2008, and are subject to

change every month. Had fees not been waived and/or expenses reimbursed in

the past, the Morningstar rating may have been lower. A fund is eligible

for a Morningstar Rating three years after inception. The top 10% of funds

in a category receive five stars, the next 22.5% four stars, the next 35%

three stars, the next 22.5% two stars and the bottom 10% one star. (Each

share class is counted as a fraction of one fund within this scale and

rated separately, which may cause slight variations in the distribution

percentages.) Ratings for other share classes may differ due to different

performance characteristics.

There are risks involved with investing in ETFs including possible loss of

money. Shares are not actively managed and are subject to risk similar to

stocks and covered call options, as well as those risks related to short

selling and margin maintenance.

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.

PowerShares® is a registered trademark of Invesco PowerShares Capital

Management LLC. The IntellidexTM Indexes are trademarks of the American

Stock Exchange LLC (“Amex”) which are licensed for use by Invesco

PowerShares Capital Management LLC in connection with the PowerShares

Intellidex Investment Products. The Products are not sponsored or endorsed

by the Amex, and the Amex makes no warranty or representation as to the

accuracy and/or completeness of the Indexes or results to be obtained by

any person from use of the Indexes or the trading of the Products.

Invesco Aim Distributors, Inc. is the distributor of the PowerShares

Exchange-Traded Fund Trust.

Invesco PowerShares Capital Management LLC and Invesco Aim Distributors,

Inc. are indirect, wholly owned subsidiaries of Invesco Ltd.

An investor should consider the Funds’ investment objectives, risks,

charges and expenses carefully before investing. For a copy of the

prospectus, which contains this and other information about the Funds, call

800.983.0903 or visit our website www.invescopowershares.com. Please read

the prospectus carefully before investing.

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