The PowerShares Global Nuclear Energy Portfolio (Fund) is based on the WNA Nuclear Energy IndexSM</SUP> (Index). The Fund will normally invest at least 90% of its total assets in securities that comprise the Index and American depository receipts based on the securities in the Index. The Index is designed to track the overall performance of globally traded companies which are engaged in the nuclear energy industry with representation across reactors, utilities, construction, technology, equipment, service providers and fuels. The rules-based index is rebalanced quarterly from a universe of equity securities traded on recognized stock exchanges in the Americas, Europe, the Middle East, Africa and Asia/Pacific. The Fund is rebalanced and reconstituted quarterly.