AHYB seeks to provide high current income by investing in a portfolio of high-yield corporate debt that are primarily rated BB or B. To select securities, the fund adviser uses a bottom-up strategy with a top-down investment overlay. Companies are screened for fundamental metrics such as cash flow, valuation, credit quality, financial history and management, while considering macroeconomic factors including interest rates, economic conditions and risk of inflation. Although the fund has no restrictions on average maturity, it typically invests in bonds with maturities of 3 to 10 years. AHYB uses the same strategy as the American Century High-Income mutual fund but focuses more on BB- and B- rated bonds.