The Sharpe Ratio measures the potential reward offered by a mutual fund relative to its risk level. Developed by William Sharpe, the ratio uses a fund's standard deviation and its excess return to determine reward per unit of risk. The higher the sharpe ratio, the better the fund's historical risk-adjusted performance. Sharpe Ratios shown for portfolios with 10 years of history. Fund name, 10-year rank/number of funds in category: In Retirement, 10/74 funds; 2015 Portfolio, 1/22 funds; 2025 Portfolio, 1/17 funds; 2035 Portfolio, 1/17 funds; 2045 Portfolio, 1/7 funds.
A One Choice Target Date Portfolio's target date is the approximate year when investors plan to retire or start withdrawing their money. The principal value of the investment is not guaranteed at any time, including at the target date.
Each target-date One Choice Target Date Portfolio seeks the highest total return consistent with its asset mix. Over time, the asset mix and weightings are adjusted to be more conservative. In general, as the target year approaches, the portfolio's allocation becomes more conservative by decreasing the allocation to stocks and increasing the allocation to bonds and money market instruments.
Diversification does not assure a profit nor does it protect against loss of principal.
The performance of the portfolios is dependent on the performance of their underlying American Century Investments' funds and will assume the risks associated with these funds. The risks will vary according to each portfolio's asset allocation, and a fund with a later target date is expected to be more volatile than one with an earlier target date.
Investment return and principal value of security investments will fluctuate. The value at the time of redemption may be more or less than the original cost. Past performance is no guarantee of future results.