The fund primarily aims to generate returns by collecting premiums from selling put options on equity indices. These options are always fully backed by assets. Typically, under regular market conditions, at least 80% of the fund's total net assets (which includes any borrowed capital) will be committed to these written put options, which are focused on U.S. equity securities. To meet the necessary collateral and margin requirements for its option-selling activities, the fund strategically invests in U.S. Treasury securities, usually those with remaining maturities of one year or less.