The PowerShares NASDAQ-100 BuyWrite Portfolio (Ticker: PQBW) seeks investment results that correspond generally to the performance, before fees and expenses, to the CBOE NASDAQ-100 BuyWrite Index. The index is designed to measure the total rate of return of a hypothetical "buy-write", or "covered call", strategy on the Nasdaq 100 Index. This strategy consists of holding a portfolio indexed to the Nasdaq 100 (the "Reference Index") and selling a succession of written options, each with an exercise price at or above the prevailing price level of the Nasdaq 100. The index provides a benchmark measure of the total return performance of this hypothetical strategy. Dividends paid on the component stocks underlying the Nasdaq 100 and the dollar value of option premiums received from written options are reinvested.