The Invesco S&P 500 BuyWrite ETF (Fund) is based on the CBOE S&P 500 BuyWrite Index (Index). The Fund generally will invest at least 90% of its total assets in securities that comprise the Index and will write (sell) call options thereon. The Index is a total return benchmark index that is designed to track the performance of a hypothetical "buy-write" strategy on the S&P 500 Index. The Index measures the total rate of return of an S&P 500 covered call strategy. This strategy consists of holding a long position indexed to the S&P 500 Index and selling a succession of covered call options, each with an exercise price at or above the prevailing price level of the S&P 500 Index. Dividends paid on the component stocks underlying the S&P 500 Index and the dollar value of option premiums received from written options are reinvested. The Fund and the Index are rebalanced and reconstituted monthly.