The investment seeks to provide investment results that closely correspond, before fees and expenses, to the performance of the FTSE Goldman Sachs Treasury Inflation Protected USD Bond Index (the index). The fund seeks to achieve its investment objective by investing at least 80% of its assets (exclusive of collateral held from securities lending) in securities included in its underlying index. The index is designed to track the performance of inflation-protected, fixed rate U.S. Treasury Securities denominated in U.S. dollars (USD) that meet certain screening criteria.