The fund is an actively-managed ETF that seeks to achieve its investment objective by (i) investing in one or more other ETFs that seek to obtain exposure to the performance of U.S. short-term treasury bills, typically less than 90 days in duration, or directly in the securities held by such ETFs and (ii) selling and purchasing S&P 500® Index put options to generate income to the fund beyond what is received from the Underlying Investments.