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American Century Fund Profile

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INVESTOR CLASS      January 31, 2002

Prime Money Market Fund

This profile summarizes key information about the fund that is included in the
fund's Prospectus. The fund's Prospectus includes additional information about
the fund, including a more detailed description of the risks associated with
investing in the fund, that you may want to consider before you invest.


You may obtain the Prospectus and other information about the fund at no cost by
calling us at 1-888-345-2071, accessing our Web site or visiting one of our
Investor Centers. See the back cover for additional telephone numbers and our
address.

[american century brokerage logo and text logo (reg. sm)]


Prime Money Market Fund

1. WHAT IS THE FUND'S INVESTMENT OBJECTIVE?

    Prime Money Market seeks to earn the highest level of current income while
    preserving the value of your investment.

2. WHAT IS THE FUND'S INVESTMENT STRATEGY?

    The fund earns its income by investing in high-quality, debt securities.
    These securities are short-term obligations of banks, governments and
    corporations that are payable in U.S. dollars.

    Additional information about Prime Money Market's investments is available
    in its annual and semiannual reports. In these reports you will find a
    discussion of the market conditions and investment strategies that
    significantly affected the fund's performance during the most recent fiscal
    period. You may get these reports at no cost by calling us.

3. WHAT ARE THE SIGNIFICANT RISKS OF INVESTING IN THE FUND?

    * An investment in the fund is not a bank deposit, and it is not insured or
      guaranteed by the Federal Deposit Insurance Corporation (FDIC) or any
      other government agency. Although the fund seeks to preserve the value of
      your investment at $1.00 per share, it is possible to lose money by
      investing in the fund.

    * Because high-quality, debt securities are among the safest securities
      available, the interest they pay is among the lowest for income-paying
      securities. Accordingly, the yield on this fund will likely be lower than
      yields on funds that invest in longer-term or lower-quality securities.

    FUND PERFORMANCE

    The following bar chart shows the actual performance of Prime Money Market's
    Investor Class shares for each full calendar year since the fund's inception
    on November 17, 1993. The bar chart indicates the volatility of the fund's
    historical returns from year to year. The bar chart and the performance
    information below are not intended to indicate how the fund will perform in
    the future. Account fees are not reflected in the chart below. If they had
    been included, returns would be lower than those shown.

[data shown in bar chart]
 Calendar Year-By-Year Returns (1)

2001     3.83%
2000     6.02%
1999     4.77%
1998     5.18%
1997     5.26%
1996     5.09%
1995     5.70%
1994     4.47%

        (1) From August 1, 1997, to May 31, 1998, all or a portion of the fund's
        management fee was waived. As a result, the fund's returns are higher
        than they would have been had the waiver not been in effect.

    The highest and lowest quarterly returns for the period reflected in the bar
    chart are:

                             Highest                Lowest
    ---------------------------------------------------------------------------
    Prime Money Market       1.56% (3Q 2000)        0.54% (4Q 2001)

    The following table shows the average annual total returns of the fund's
    shares for the periods indicated. The 90-Day Treasury Bill Index, an
    unmanaged index that reflects no operating costs, is included as a benchmark
    for performance comparisons. The index is derived from secondary market
    interest rates as published by the Federal Reserve Bank. For current
    performance information, including seven-day yield, please call us or access
    our Web site.

                                              1 YEAR          5 YEARS           LIFE OF FUND(1)
      ==========================================================================================
     AVERAGE ANNUAL TOTAL RETURNS (PERIOD ENDED DECEMBER 31, 2001)(2)
               Prime Money Market              3.83%            5.01%               5.01%
               90-Day Treasury Bill Index      3.43%            4.84%            4.89%(3)

        (1) The inception date for Prime Money Market is November 17, 1993.

        (2) From August 1, 1997, to May 31, 1998, all or a portion of the fund's
        management fee was waived. As a result, the fund's returns are higher
        than they would have been had the waiver not been in effect.

        (3) Since November 30, 1993, the date closest to the fund's inception
        for which data are available.


4. WHAT ARE THE FUND'S FEES AND EXPENSES?

    There are no sales loads, fees or other charges

    * to buy fund shares directly from American Century

    * to reinvest dividends in additional shares

    * to exchange into the Investor Class shares of other American Century fund

    * to redeem your shares other than a $10 fee to redeem by wire

    The following table describes the fees and expenses you may pay if you buy
    and hold shares of the fund.

     SHAREHOLDER FEES (FEES PAID DIRECTLY FROM YOUR INVESTMENT)
         Maximum Account Maintenance Fee                  $25(1)

        (1) Applies only to investors whose total eligible investments with
        American Century are less than $10,000.

     ANNUAL FUND OPERATING EXPENSES
     (EXPENSES THAT ARE DEDUCTED FROM FUND ASSETS)
         Management Fee                                   0.60%(1)
         Distribution and Service (12b-1) Fees            None
         Other Expenses                                   0.01%(2)
         Total Annual Fund Operating Expenses             0.61%

        (1) Based on expenses incurred during the fund's most recent fiscal
        year. The fund has a stepped fee schedule. As a result, the fund's
        management fee rate generally decreases as fund assets increase.

        (2) Other expenses include the fees and expenses of the fund's
        independent trustees and their legal counsel, as well as interest and
        portfolio insurance.

           EXAMPLE
             Assuming you . . .
             * invest $10,000 in the fund
             * redeem all of your shares at the end of the periods shown below
             * earn a 5% return each year
             * incur the same operating expenses as shown above
             . . . your cost of investing in the fund would be:

                           1 year       3 years     5 years      10 years
                         =====================================================

                            $62          $195        $340          $761

             Of course, actual costs may be higher or lower. Use this example to
             compare the costs of investing in other funds.

5. WHO ARE THE FUND'S INVESTMENT ADVISOR AND PORTFOLIO MANAGERS?

    American Century Investment Management, Inc. provides investment advisory
    and management services for the fund. American Century uses teams of
    portfolio managers, assistant portfolio managers and analysts working
    together to manage its mutual funds. Identified below is the portfolio
    manager who leads the team that manages Prime Money Market:

    DENISE TABACCO, Vice President and Portfolio Manager, has been a member of
    the team that manages Prime Money Market since May 1996. She joined American
    Century in 1988, becoming a member of its portfolio department in 1991. She
    has a bachelor's degree in accounting from San Diego State University and an
    MBA in finance from Golden Gate University.

6. HOW DO I BUY FUND SHARES?

    American Century Brokerage offers several ways to purchase shares

    * Complete and return a brokerage application along with an investment check
      payable to American Century Brokerage

    * Call us and send your investment by bank wire transfer

    * If you already have an American Century Brokerage account, simply contact
      us by writing, calling or accessing our Web site

    Your initial investment in your brokerage account must be at least $2,500.
    If your account balance falls below this account minimum, your shares may be
    redeemed involuntarily.

7. HOW DO I SELL FUND SHARES?

    The most convenient way for you to sell money market fund shares in your
    brokerage account is to use our CheckWriting feature. If you do not have
    checks, you can call us during business hours or send us a letter requesting
    a redemption check or bank wire. Bank wires require a minimum redemption of
    $1,000 and a $20 fee applies. In addition, we will automatically sell
    sufficient shares in Prime Money Market when you direct us to make other
    investments in your brokerage account.

    Depending on the options you select when you open your account, some
    restrictions may apply. For your protection, some redemption requests may
    require a signature guarantee.


8. HOW ARE FUND DISTRIBUTIONS MADE AND TAXED?

    Dividends are declared and available for redemption daily. Because Prime is
    a money market fund, its distributions generally will be taxed as ordinary
    income. If the fund's share price were to go up or down, its annual
    distributions also could include capital gains or losses. Distributions are
    reinvested automatically in additional shares unless you choose another
    option.

9. WHAT SERVICES ARE AVAILABLE?

    American Century Brokerage offers several ways to make it easier for you to
    manage your account, such as

    *  telephone transactions
    *  wire and electronic funds transfers
    *  TeleSelect Automated Information and Trading Line transactions
    *  24-hour online account access and transactions

    You will find more information about these choices in our Brokerage
    Information Kit, which you may request by calling us, accessing our Web site
    or visiting one of our Investor Centers.

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AMERICAN CENTURY BROKERAGE, INC.
P.O. BOX 419146
KANSAS CITY, MISSOURI 64141-6146

WWW.AMERICANCENTURY.COM

BROKERAGE CLIENT RELATIONS ASSOCIATE
1-888-345-2071

FAX
650-967-9627

TELESELECT AUTOMATED INFORMATION
AND TRADING LINE
1-888-345-2091

TELECOMMUNICATIONS DEVICE FOR THE DEAF
1-800-634-4113

SEP-IRA SERVICES
1-800-345-3533, ext. 4210


SH-PRF-28246   0201                   American Century Investment Services, Inc.