CHICAGO, IL -- (Marketwire) -- 09/16/08 -- Invesco PowerShares Capital Management LLC, a leading provider of exchange-traded funds (ETFs), announced the PowerShares Global Biotech Portfolio will begin trading Sept. 18, 2008, on the Nasdaq Stock Market.

--  PBTQ - PowerShares Global Biotech Portfolio
    

"The biotech industry's revenue base and product pipeline has grown significantly over the last two decades as some of the most important advances in health science have come to market," said Bruce Bond, president and CEO of Invesco PowerShares. "We believe the PowerShares Global Biotech ETF (PBTQ) will provide investors a transparent, tax efficient way to access a global portfolio of the largest and most liquid biotechnology companies in the world."

The PowerShares Global Biotech Portfolio (PBTQ) is based on the NASDAQ OMX Global Biotech Index(SM). The Index is designed to measure the overall performance of globally traded securities of the largest and most liquid companies involved in the biotechnology industry. The Index is rebalanced quarterly using a modified market capitalization-weighting methodology.

Index Company Weightings as of 6/30/2008

PowerShares Global Biotech Portfolio (PBTQ)
Company                     Index Weight (%)
Amgen Inc.                       8.00
Gilead Sciences Inc.             8.00
GenenTech                        8.00
Celgene Corp.                    8.00
Genzyme Corp.                    8.00
CSL Ltd.                         4.00
Biogen Idec Inc.                 4.00
Actelion Ltd.                    4.00
Vertex Pharmaceuticals Inc.      4.00
Cephalon Inc.                    3.87

Source: The NASDAQ OMX Group, Inc., based on hypothetical Index information as of June 30, 2008. The Index was not yet operational as of June 30, 2008. Allocations represent the percentages that would have been utilized if the Index had been operational. Data is subject to change. Index values do not represent Fund values. Past performance is no guarantee of future results. An investor cannot invest directly in an index.

Invesco PowerShares currently offers 127 portfolios, one of the largest, most diverse families of ETFs available to U.S. investors today.

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 approximately $13.95 billion, PowerShares ETFs trade on all of the major U.S. stock exchanges that trade ETFs.