The PowerShares S&P SmallCap Health Care Portfolio (Fund) is based on the S&P SmallCap 600® Capped Health Care Index (Index). The Fund will normally invest at least 90% of its total assets in common stocks that comprise the Index. The Index is designed to measure the overall performance of common stocks in the health care sector. Included are healthcare companies principally engaged in the business of providing healthcare-related products and services, including biotechnology, pharmaceuticals, medical technology and supplies, and facilities. The Index is a subset of the S&P SmallCap 600® Index, which is a float-adjusted, market-capitalization-weighted index reflecting the US small-cap market. The Fund and the Index are rebalanced and reconstituted quarterly.