Seeks safety of principal and high current income that is exempt from federal income tax.
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.
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.
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. Extraordinary performance is attributable in part to unusually favorable market conditions and may not be repeated or consistently achieved in the future.
An investment in the fund is neither insured nor guaranteed by the Federal Deposit Insurance Corporation or any other government agency. Although the fund seeks to preserve the value of your investment at $1 per share, it is possible to lose money by investing in the fund.Fund shares are not guaranteed by the U.S. Government. Because the fund invests primarily in municipal securities, it will be sensitive to events that affect municipal markets. Investment returns are exempt from Federal taxes.
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.
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.