The investment seeks to track the investment results of the ICE BofAML 5-10 Year US Corporate Index. The fund generally invests at least 90% of its assets in securities of the underlying index. The index measures the performance of investment-grade corporate bonds that are U.S. dollar-denominated and have a remaining maturity of greater than or equal to five years and less than ten years. The fund may invest the remainder of its assets in certain futures, options and swap contracts, cash and cash equivalents.