The PowerShares 1-30 Laddered Treasury Portfolio is based on the Ryan/Mergent 1-30 Year Treasury Laddered Index, which measures the potential returns of the U.S. Treasury yield curve based on approximately 30 equally weighted U.S. Treasury issues with fixed coupons, scheduled to mature in a proportional, annual laddered structure. The Portfolio does not participate in Treasury Bills, Treasury Inflation Protected Securities (TIPS), or zero-coupon securities ("STRIPS").
* Trading Characteristics Definitions Spread : The average dollar difference between the best bid and best offer across all exchanges for the specified time period, weighted by volume. *Spread : Is the monthly average of the daily spread. % Spread : The average spread amount divided by the average bid-ask midpoint, weighted by volume. Share Volume : Composite Volume - total number of shares traded on all exchanges and Nasdaq. Dollar Volume : Dollar amount of shares traded on each exchange for the specified symbol, based on the stocks average price for the time period specified.