The investment seeks daily investment results, before fees and expenses, that correspond to one and one-half times (1.5x) the daily performance of the Dow Jones U.S. BiotechnologySM Index. The fund invests in financial instruments that the adviser believes, in combination, should produce daily returns consistent with its investment objective. The index seeks to measure the performance of certain companies in the biotechnology sector of the U.S. equity market. The fund is non-diversified.