PowerShares S&P 500 Equal Weight Materials Portfolio 

The fund generally will invest at least 90% of its total assets in securities that comprise the underlying index. The underlying index is composed of all of the components of the S&P 500® Materials Index, an index that contains the common stocks of all companies included in the S&P 500® Index that are classified as members of the materials sector, as defined according to the Global Industry Classification Standard ("GICS").