Typically, this fund commits a minimum of 80% of its overall capital to either the underlying index's constituents or to financial instruments exhibiting highly similar economic attributes. The benchmark index itself is crafted to comprehensively cover the U.S. market for investment-grade fixed income securities. A core aim of this index's design is to enhance yield, all while strictly adhering to predefined risk limits and guidelines. Importantly, the fund operates on a non-diversified basis.