The investment seeks investment results that closely correspond, before fees and expenses, to the performance of the Bloomberg Barclays Short-Term U.S. Aggregate Bond Index. The index measures the performance of U.S. dollar denominated investment grade taxable bonds with remaining effective maturities between one and five years. The fund will invest at least 80% of its assets (net assets, plus the amount of borrowing for investment purposes) in securities included in the underlying index.