Amex Vendor Alert #2008-24

Market Data Fact Sheet - New PowerShares ETFs Anticipated to Begin Trading on Tuesday, May 20, 2008

The Amex will begin publishing new index values on Monday, May 19, 2008 to support the new PowerShares ETFs that are anticipated to begin trading on Tuesday, May 20, 2008. Please refer to the attached Fact Sheet for more information.

• PowerShares Autonomic Growth NFA Global Asset Portfolio (PTO)
• PowerShares Autonomic Balanced Growth NFA Global Asset Portfolio (PAO)
• PowerShares Autonomic Balanced NFA Global Asset Portfolio (PCA)

Symbol	ETF Cusip	Expense Ratio
PTO	73936Q306	0.86%
PAO	73936Q405	0.82%
PCA	73936Q504	0.75%