PowerShares Water Resources Portfolio (the Fund) seeks investment results that generally correspond to the price yield of the NASDAQ OMX US Water Index (the Underlying Index). The Fund generally will invest at least 90% of its total assets in common stocks that comprise the Underlying Index. The Underlying Index seeks to track the performance of the United States exchange-listed companies that create products designed to conserve and purify water for homes, businesses and industries. The Fund invests in the sector such, such as industrials, utilities, healthcare, information technology and materials. Its investment advisor is Invesco PowerShares Capital Management LLC.