The investment seeks to track as closely as possible, before fees and expenses, the total return of the Bloomberg US Government/Credit 1-5 Year Index composed of U.S. investment grade government related and corporate bonds with maturities between 1-5 years. The index is a broad-based benchmark measuring the performance of U.S. dollar-denominated U.S. Treasury bonds, government related bonds and investment grade U.S. corporate bonds that have a remaining maturity of greater than or equal to one year and less than five years. The fund will invest at least 90% of its net assets in securities included in the index.