The investment seeks to track the investment results of an index composed of U.S. equities in the oil equipment and services sector. The fund generally invests at least 90% of its assets in securities of the underlying index and in depositary receipts representing securities of the underlying index. It seeks to track the investment results of the Dow Jones U.S. Select Oil Equipment & Services Index (the "underlying index"), which measures the performance of the oil equipment and services sector of the U.S. equity market. The fund is non-diversified.