PowerShares S&P SmallCap Energy Portfolio (the Fund) seeks investment results that correspond generally to the price and yield performance of an index called the S&P SmallCap 600 Capped Energy Index (the Underlying Index). The Underlying Index consists of common stocks of the United States energy companies that are principally engaged in the business of producing, distributing or servicing energy-related products, including oil and gas exploration and production, refining, oil services, pipeline, and solar, wind and other non-oil-based energy. The Underlying Index is compiled, maintained and calculated by Standard & Poor's Financial Services LLC (Standard & Poor's). The Fund will normally invest at least 80% of its total assets in common stocks of small-capitalization energy companies. The Fund will normally invest at least 90% of its total assets in common stocks that comprise the Underlying Index. The Fund’s investment adviser is Invesco PowerShares Capital Management LLC.