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Fight inflation with less interest rate risk. Short Duration Inflation Protection Bond is actively managed to help investors combat the corrosive effects of domestic inflation and mitigate interest rate risk through a broadly diversified portfolio of short-term inflation-indexed bonds and other fixed income securities.

/sd/customer/portfolio_json 1.800.345.2021
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Investment Blend

Investment Blend: Reflects the blend of securities owned by a fund. For example, the percentage of foreign or domestic stocks held by an equity fund or the percentage of corporate and government securities owned by a bond fund. The US/Foreign Convertibles grouping includes Convertible Bonds, Equity Linked Securities and Convertible Preferred securities. Due to rounding, these values may exceed 100%.
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Top Ten Holdings

Top Ten Holdings: This value represents the top ten holdings included in the portfolio on a percent of assets basis. Equity holdings are grouped to include common shares, depository receipts, rights and warrants issued by the same company. Holdings are rounded to the nearest whole number, which may result in the display of less than ten holdings.

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Maturity

Maturity: Describes the portfolio of the fund in terms of the different maturities of the securities it holds. Due to rounding, these values may exceed 100%.

Weighted average life (WAL) is a measure of the sensitivity of a fixed income portfolio to interest rate changes. WAL is the average time in years to principal repayment, weighted by par or the face value of a fixed income security. Accordingly, WAL reflects how a portfolio would react to deteriorating credit or tightening liquidity conditions.

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Coupon

Coupon: Describes the portfolio of the fund in terms of the different coupons of the securities it holds. Due to rounding, these values may exceed 100%.

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Quality

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Duration

Duration: Describes the portfolio of the fund in terms of the different durations of the securities it holds. Due to rounding, these values may exceed 100%.

Quality: Describes the portfolio of the fund in terms of the quality ratings of the securities it holds. Instruments issued by the U.S. Government or one of its agencies are treated as AAA rated. Cash and cash equivalents include payable amounts related to securities purchased but not settled at period end. Credit quality ratings on underlying securities of a fund are obtained from three Nationally Recognized Statistical Rating Organizations ("NRSROs"), Standard & Poor's, Moody's and Fitch. Ratings are converted to the equivalent Standard & Poor's rating category for purposes of presentation. The median rating is used for securities rated by all three NRSROs. The common rating is used when two of the three NRSROs agree. The lower rating is used when only two NRSROs rate a security. A "nonrated" designation is assigned when a public rating is not available for a security. This designation does not necessarily indicate low credit quality. The letter ratings are provided to indicate the credit worthiness of the underlying bonds in the portfolio and generally range from AAA (highest) to D (lowest). Includes payable amounts related to securities purchased but not settled at period end. Due to rounding, these values may exceed 100%.

Data reflects past performance for Investor Class shares, assumes reinvestment of dividends and capital gains and is no guarantee of future results. Current performance may be higher or lower than data shown. Investment return and principal value fluctuates. Redemption value may be more or less than original cost. Obtain performance data current to the most recent month end. For additional share class information, consult the prospectus.

Investments in fixed income securities are subject to the risks associated with debt securities including credit, price and interest rate risk. In certain interest rate environments, such as when real interest rates are rising faster than nominal interest rates, inflation-protected securities with similar durations may experience greater losses than other fixed income securities. Interest payments on inflation-protected debt securities will fluctuate as the principal and/or interest is adjusted for inflation and can be unpredictable.

W2 If your account falls below the minimum balance, you will be notified and given 90 days to meet the minimum. If the deadline is not met, American Century Investments may redeem the shares in the account and send the proceeds to the address of record.

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Expense ratios provided are the funds' total annual operating expense ratios, gross of any fee waivers or expense reimbursements. Expense ratios are as of the funds' most current prospectus.

Quick Facts

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Distribution