To achieve its investment goals, the fund typically commits a significant portion of its capital – at least 80% of its net assets, including any funds borrowed for investment purposes – to bonds. The portfolio's average duration, a measure of its interest rate sensitivity, can fluctuate broadly, ranging from negative two years to a maximum of four years. Furthermore, the fund has the option to employ derivatives. These financial instruments derive their value from, or are directly linked to, a variety of underlying assets, which may include equities, fixed-income securities, commodities, foreign currencies, interest rates, or broader market indices.