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For each fund with at least a three-year history, Morningstar calculates a Morningstar Rating™ based on a Morningstar Risk-Adjusted Return measure that accounts for variation in a fund's monthly performance, placing more emphasis on downward variations and rewarding consistent performance. Morningstar ratings are based upon Investor class of shares, unless otherwise indicated. The top 10% of funds in each category receive 5 stars, the next 22.5% receive 4 stars, the next 35% receive 3 stars, the next 22.5% receive 2 stars and the bottom 10% receive 1 star. (Each share class is counted as a fraction of one fund within this scale and rated separately, which may cause slight variations in the distribution percentages.) The Overall Morningstar Rating™ for a fund is derived from a weighted average of the performance figures associated with its three-, five- and ten-year (if applicable) Morningstar Rating™ metrics. Past performance is no guarantee of future results.
Seeks high current income while maintaining safety of principal.
Investments in fixed income securities are subject to the risks associated with debt securities including credit, price and interest rate risk. Generally, as interest rates rise, the value of the securities held in the fund will decline. The opposite is true when interest rates decline. Investments in mortgage-backed securities are subject to prepayment risks which may result in greater share price volatility. The guarantee on U.S. government securities applies only to the underlying securities of the fund if held to maturity and not to the value of the fund’s shares. A fund’s investments in mortgage-backed securities are subject to prepayment risks which may result in greater share price volatility. There is no guarantee that the investment objectives will be met. Dividends and yields represent past performance and there is no guarantee that they will continue to be paid.
High current income while preserving capital through investments in U.S. government securities.
Invests primarily in U.S. government securities, including U.S. Treasury securities and other securities issued or guaranteed by the U.S. government and its agencies.
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 U.S./Foreign Convertibles grouping includes Convertible Bonds, Equity Linked Securities and Convertible Preferred securities.
Maturity: Describes the portfolio of the fund in terms of the different maturities of the securities it holds.
Weighted average maturity (WAM) uses effective maturity to approximate the remaining term to maturity of a fund's investment portfolio, weighted by dollar amount. Generally, the longer a fund's WAM, the more sensitive it is to changes in interest rates.
Vice President, Portfolio Manager
Vice President, Senior Portfolio Manager
Senior Vice President, Senior Portfolio Manager
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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.
Generally, as interest rates rise, the value of the securities held in the fund will decline. The opposite is true when interest rates decline.
Fund shares are not guaranteed by the U.S. Government.
Investments in mortgage-backed securities are subject to prepayment risks, which may result in greater share price volatility. The guarantee on U.S. government securities applies only to the underlying securities of the fund if held to maturity and not to the value of the fund's shares.
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.
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.
Lipper rankings are based on average annual total returns. Portions of the mutual fund performance information contained on this page were supplied by Lipper, a Thomson Reuters Company, subject to the following: Copyright 2017 © Thomson Reuters. All rights reserved. Any copying, republication or redistribution of Lipper content, including by caching, framing or similar means, is expressly prohibited without the prior written consent of Lipper. Lipper shall not be liable for any errors or delays in the content, or for any actions taken in reliance thereon. Performance data is preliminary and subject to revision. Rankings are based on all classes available within the classification as of the date shown. Rankings are based only on the universe shown.
©2017 Morningstar, Inc. All Rights Reserved. Certain information contained herein: (1) is proprietary to Morningstar and/or its content providers; (2) may not be copied or distributed; and (3) is not warranted to be accurate, complete or timely. Neither Morningstar nor its content providers are responsible for any damages or losses arising from any use of this information.
©2017 Standard & Poor's Financial Services LLC. All rights reserved. For intended recipient only. No further distribution and/or reproduction permitted. Standard & Poor's Financial Services LLC ("S&P") does not guarantee the accuracy, adequacy, completeness or availability of any data or information contained herein and is not responsible for any errors or omissions or for the results obtained from the use of such data or information. S&P GIVES NO EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, ANY WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE OR USE IN CONNECTION TO THE DATA OR INFORMATION INCLUDED HEREIN. In no event shall S&P be liable for any direct, indirect, special or consequential damages in connection with recipient's use of such data or information.
The Dow Jones AveragesSM and The Dow Jones Global IndexesSM are compiled, calculated and distributed by Dow Jones & Company, Inc. and have been licensed for use. All content of the Dow Jones AveragesSM and The Dow Jones Global IndexesSM ©2017 Dow Jones & Company, Inc. All Rights Reserved.
Source: Bloomberg Index Services Ltd
For detailed descriptions of indices or investing terms referenced above, refer to our glossary.