YTD Total Return As of 01/27/2026 | 0.25% |
Nav As of 01/27/2026 | $1.00 |
Nav Change ($0.00) | 0.00% |
Seeks to earn the highest level of current income while preserving the value of your investment.
Key Facts
Investment Objective | Seeks to earn the highest level of current income while preserving the value of your investment |
Inception Date | 11/17/1993 |
Benchmark | Bloomberg U.S. 1-3 Month Treasury Bill IndexA |
Total Assets | $2,569,273,669 As of 12/31/2025 |
Total Holdings | 139 As of 11/30/2025 |
Distribution Frequency | Monthly |
Fees
| Gross Expense Ratio | 0.57% |
Trading Information
| Ticker | BPRXX |
| CUSIP | 024932105 |
Fees
| Gross Expense Ratio | 0.57% |
Trading Information
| Ticker | BPRXX |
| CUSIP | 024932105 |
Data reflects past performance, 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. Returns less than one year are not annualized. Index performance does not represent the fund's performance. It is not possible to invest directly in an index.
Average annual total returns illustrate the annual compounded returns that would have produced the cumulative total return if the fund's performance had remained constant throughout the period indicated. Returns for periods less than one year are not annualized. For periods prior to the inception of a class, performance is for the oldest class, restated with applicable fees, if any.
Data reflects past performance, 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. Returns less than one year are not annualized. Index performance does not represent the fund's performance. It is not possible to invest directly in an index.
7 Day Current Yield
3.33%
As of 01/27/2026
7 Day Effective Yield
3.39%
As of 01/27/2026
As of 12/31/2025
| Commercial Paper | 48% |
| Variable Rate Notes/Floating Rate Notes | 18% |
| Municipal Bonds | 9% |
| Municipal Variable Rate Notes/Floating Rate Notes | 9% |
| Treasury Notes/Bonds | 6% |
| Treasury Bills | 4% |
| Certificates of Deposit | 4% |
Due to rounding, these values may exceed 100%.
Negative weights may be due to open security or capital stock
trades at period end and/or unrealized loss on derivative positions as a percent of net assets at period end.
As of 12/31/2025
| 1 - 15 Days | 71.82% |
| 16 - 30 Days | 4.34% |
| 31 - 60 Days | 9.85% |
| 61 - 90 Days | 2.05% |
| 91 - 180 Days | 10.58% |
| 181 - 270 Days | 1.37% |
Due to rounding, these values may exceed 100%
Negative weights may be due to open security or capital stock trades at period end and/or unrealized loss on derivative positions as a percent of net assets at period end.
23.69 Days Weighted Average Maturity
As of 12/31/2025
Portfolio Manager
Additional Resources
How to Buy
Individual investors: Open a new account or use an existing account registration.
Open New Account Log In NowFinancial Advisors: Contact your wholesaler at 1-800-345-6488 for more information.
Money Market Fund: You could lose money by investing in the fund. Although the fund seeks to preserve the value of your investment at $1.00 per share, it cannot guarantee it will do so. The fund may impose a fee upon sale of your shares. An investment in the fund is not a bank account and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. The fund's sponsor is not required to reimburse the fund for losses, and you should not expect that the sponsor will provide financial support to the fund at any time, including during periods of market stress.
Returns or yields for the fund would have been lower if a portion of the management fee had not been waived. Review the annual or semiannual report for the most current information.
Please see the prospectus for details about sales charges.
The gross expense ratio is the fund's total annual operating costs, expressed as a percentage of the fund's average net assets for a given time period. It is gross of any fee waivers or expense reimbursement. The net expense ratio is the expense ratio after the application of any waivers or reimbursement. This is the actual ratio that investors paid during the fund's most recent fiscal year. Please see the prospectus for more information.
Investor Class Shares: Minimum initial investment is $1,000 for IRA and CESA accounts, and $2,500 for non-retirement accounts, but these minimums are waived with an initial investment of at least $500 per account and automatic investments of at least $100 per month. Non-Retirement Accounts: If your account balance falls below the minimum, or if you cancel your automatic monthly investment plan prior to reaching the minimum, American Century Investments may redeem the account and send the proceeds to you. Prior to doing so, we will notify you and give you 90 days to meet the minimum or reinstate your automatic monthly investment plan.
Only Investor Class shares are made available to investors directly. Advisor, A, C, I, and Y Classes of shares are only available for purchase by institutions or other financial intermediaries. R, R5, and R6 Classes of shares are only available for purchase by group employer-sponsored retirement plans. Review definitions and minimums for all share classes.
A sub index of the Bloomberg U.S. Short Treasury Index, the Bloomberg U.S. 1-3 Month Treasury Bill Index is composed of zero-coupon Treasury bills with a maturity between 1 and 3 months. As Treasury bonds and notes fall below one year-to-maturity and exit the Bloomberg U.S. Treasury Index, they become eligible for the Bloomberg U.S. Short Treasury Index. It excludes zero coupon strips.
Source: Bloomberg Index Services Ltd