PowerShares Global Nuclear Energy Portfolio (the Fund) is based on the WNA Nuclear Energy Index (the Index). The Index is designed to track the overall performance of globally traded companies, which are materially 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 stock exchanges in the Americas, Europe, the Middle East, Africa and Asia/Pacific. The Fund’s investment advisor is Invesco PowerShares Capital Management LLC.