The investment seeks to track as closely as possible, before fees and expenses, the total return of the Bloomberg Barclays US Treasury Inflation-Linked Bond Index (Series-L)SM. The fund will invest at least 90% of its net assets in securities included in the index. The index includes all publicly-issued U.S. Treasury Inflation-Protected Securities (TIPS) that have at least one year remaining to maturity, are rated investment grade and have $500 million or more of outstanding face value. The TIPS in the index must be denominated in U.S. dollars and must be fixed-rate and non-convertible.