The PowerShares New York AMT-Free Municipal Bond Portfolio (the Fund), formerly The PowerShares Insured New York Municipal Bond Portfolio, is based on The BofA Merrill Lynch New York Long-Term Core Plus Municipal Securities Index (Index). The Fund will invest at least 80% of its total assets in municipal securities that comprise the Index. The Index is composed of the United States dollar-denominated, investment grade, tax-exempt debt publicly issued by New York or any of the United States territory, or their political subdivisions, in the the United States domestic market with a term of at least 15 years remaining to final maturity. The Index is adjusted monthly and its constituents are capitalization-weighted based on their current amount outstanding. The Fund and the Index are rebalanced and reconstituted monthly.