AMERICAN CENTURY CAPITAL PORTFOLIOS INC
497K3B, 1999-04-16
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[front cover]

AMERICAN CENTURY

Fund Profile

[american century logo(reg.sm)]
American
Century

Equity Income 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.

[photos of woman and girls blowing bubbles, men talking, woman at computer]

                                                                  APRIL 25, 1999
                                                                  INVESTOR CLASS

 You may obtain the Prospectus and other  information  about the fund at no cost
  by calling us at 1-800-345-2021, accessing our Web site or visiting one of our
   Investor Centers. See the back cover for additional telephone numbers and our
                                                                        address.


EQUITY INCOME FUND

1. WHAT IS THE FUND'S INVESTMENT OBJECTIVE?

    Equity Income seeks to provide  current  income.  Capital  appreciation is a
    secondary objective.

2. WHAT IS THE FUND'S INVESTMENT STRATEGY?

    The fund managers look for stocks with a favorable  dividend-paying  history
    that show the prospect for continuing and/or increasing  dividend  payments.
    Secondarily, the fund managers look for the possibility that the stock price
    may increase.

    Under normal circumstances,  the fund will invest at least 85% of its assets
    in  income-paying  securities  and at least 65% of its assets in  stocks.  A
    portion of the fund's assets may be invested in bonds and other fixed-income
    securities. When the fund managers believe that it is prudent, they also may
    invest assets in non-leveraged  futures and options.  "Non-leveraged"  means
    that  the fund may not  invest  in  futures  and  options  where it would be
    possible to lose more than the fund  invested.  Futures and options can help
    the fund's cash assets remain liquid while performing more like stocks.  The
    fund seeks to receive  dividend  payments  that  provide a yield to the fund
    that exceeds the yield of the stocks comprising the S&P 500 Index.

    Additional information about Equity Income'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?

    * As with all funds,  at any given  time the value of your  shares of Equity
    Income may be worth  more or less than the price you paid.  If you sell your
    shares when the value is less than the price you paid, you will lose money.

    * 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.

    * The value of Equity Income's shares depends on the value of the securities
    it owns and the amount of dividends and interest paid to the fund. The value
    of the  individual  securities the fund owns and the dividends they pay will
    go up and down  depending on the  performance  of the companies  that issued
    them, general market and economic conditions, and investor confidence.

    *  The  value  of  Equity  Income's  assets  invested  in  bonds  and  other
    fixed-income  securities  will go up and down as prevailing  interest  rates
    change.  Generally,  when interest  rates rise,  the fund's share value will
    decline. The opposite is true when interest rates decline.

    * If the  individual  stocks  Equity Income owns do not continue or increase
    dividend  payments,  or if the values of those stocks do not  increase,  the
    value of the fund's  shares  may not rise as high as other  funds and may in
    fact decline, even if stock prices are generally increasing.

    In summary,  Equity Income is intended for investors who seek current income
    through an equity fund that invests primarily in dividend-paying  stocks and
    who are  willing  to  accept  the  risks  associated  with  that  investment
    strategy.

    FUND PERFORMANCE

    The  following  bar chart shows the actual  performance  of Equity  Income's
    Investor  Class shares for each calendar year since the fund's  inception on
    August 1,  1994.  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.


Equity Income                                 American Century Investments


[data shown in bar chart]
     Calendar Year-By-Year Returns (1)
             1998     12.97%
             1997     28.26%
             1996     23.31%
             1995     29.63%

           (1)As of March 31, 1999, the end of the most recent calendar quarter,
           Equity Income's year-to-date return was -4.72%.

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

                              Highest                 Lowest
    Equity Income             14.19% (4Q1998)         -6.23% (3Q1998)

    The following  table shows the average annual return of the fund's  Investor
    Class  shares for the periods  indicated.  The S&P 500 Index,  an  unmanaged
    index that  reflects no  operating  costs,  is  included as a benchmark  for
    performance comparisons.

                                            1 YEAR             LIFE OF FUND(1)
     AVERAGE ANNUAL TOTAL RETURNS (PERIOD ENDED MARCH 31, 1999)
               Equity Income                -0.44%                  18.63%
               S&P 500 Index                18.42%                  27.20%

        (1)The inception date for Equity Income is August 1, 1994.

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

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

     ANNUAL FUND OPERATING EXPENSES

     (EXPENSES THAT ARE DEDUCTED FROM FUND ASSETS)

               Management Fee                                        1.00%
               Distribution and Service (12b-1) Fees                 None
               Other Expenses(1)                                     0.00%
               Total Annual Fund Operating Expenses                  1.00%

        (1)Other  expenses,  which  include the fees and  expenses of the fund's
        independent directors,  their legal counsel,  interest and extraordinary
        expenses, were less than 0.005% for the most recent fiscal year.

           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
                     $102           $318            $551            $1,219

            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.  The  portfolio  managers on the Equity
    Income team are identified as follows:

    PHILLIP N. DAVIDSON, Vice President and Portfolio Manager, has been a member
    of the team that manages  Equity  Income since its inception in August 1994.
    He joined American Century in September 1993. He has a bachelor's  degree in
    finance and an MBA from Illinois State University.


Fund Profile                                                  Equity Income


    SCOTT A.  MOORE,  Portfolio  Manager,  has been a  member  of the team  that
    manages  Equity  Income  since  October  1996 and  Portfolio  Manager  since
    February  1999. He joined  American  Century in August 1993 as an Investment
    Analyst.  He has a  bachelor's  degree in  finance  from  Southern  Illinois
    University and an MBA in finance from the University of Missouri - Columbia.
    He is a Chartered Financial Analyst.

6. HOW DO I BUY FUND SHARES?

    *  Complete and return the enclosed application

    *  Call us and exchange shares from another American Century fund

    *  Call us and send your investment by bank wire transfer

    Your  initial  investment  must be at least $2,500  ($1,000 for  traditional
    IRAs,  Roth IRAs and UGMA/UTMA  accounts)  unless you establish an automatic
    investment  plan of at least  $50 per  month.  If your  redemption  activity
    causes the value of your  account to fall below this account  minimum,  your
    shares may be redeemed involuntarily.

7. HOW DO I SELL FUND SHARES?

    You may sell all or part of your fund shares on any  business day by writing
    or calling us. You also may exchange your shares in Equity Income for shares
    in nearly 70 other mutual funds  offered by American  Century.  Depending on
    the options you select when you open your  account,  some  restrictions  may
    apply.  For your  protection,  some redemption  requests require a signature
    guarantee.

8. HOW ARE FUND DISTRIBUTIONS MADE AND TAXED?

    Equity  Income pays  distributions  of  substantially  all of its income and
    realized capital gains once a year,  usually in December.  Distributions may
    be taxable as ordinary  income,  capital gains or a combination  of the two.
    Capital gains are taxed at different  rates  depending on the length of time
    the fund held the securities  that were sold.  Distributions  are reinvested
    automatically in additional shares unless you choose another option.

9. WHAT SERVICES ARE AVAILABLE?

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

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

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

    Information   contained  in  our  Investor   Services   Guide   pertains  to
    shareholders  who invest directly with American  Century rather than through
    an employer-sponsored retirement plan or financial intermediary.

    If  you  own  or  are   considering   purchasing   fund  shares  through  an
    employer-sponsored  retirement plan or financial intermediary,  your ability
    to purchase  shares of the fund,  exchange them for shares of other American
    Century  funds,  and  redeem  them will  depend on the terms of your plan or
    financial  intermediary.  If  you  have  questions  about  investing  in  an
    employer-sponsored retirement plan or through a financial intermediary, call
    a Service Representative at 1-800-345-3533.


[american century logo(reg.sm)]
American
Century


AMERICAN CENTURY INVESTMENTS
P.O. BOX 419200
KANSAS CITY, MISSOURI 64141-6200

INVESTOR RELATIONS
1-800-345-2021 or 816-531-5575

AUTOMATED INFORMATION LINE
1-800-345-8765

FAX
816-340-7962

TELECOMMUNICATIONS DEVICE FOR THE DEAF
1-800-634-4113 or 816-444-3485

BUSINESS, NOT-FOR-PROFIT AND
EMPLOYER-SPONSORED RETIREMENT PLANS
1-800-345-353

Visit our Web site at WWW.AMERICANCENTURY.COM [link to web site with arrow]

SH-PRF-16090   9904                                   Funds Distributor, Inc.
<PAGE>
[front cover]

AMERICAN CENTURY

Fund Profile

[american century logo(reg.sm)]
American
Century


Value 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.

[photos of woman and girls blowing bubbles, men talking, woman at computer]

                                                                  APRIL 25, 1999
                                                                  INVESTOR CLASS

 You may obtain the Prospectus and other  information  about the fund at no cost
  by calling us at 1-800-345-2021, accessing our Web site or visiting one of our
   Investor Centers. See the back cover for additional telephone numbers and our
                                                                        address.



VALUE FUND

1. WHAT IS THE FUND'S INVESTMENT OBJECTIVE?

    Value  seeks  long-term  capital  growth by  investing  primarily  in common
    stocks. Income is a secondary objective.

2. WHAT IS THE FUND'S INVESTMENT STRATEGY?

    The fund  managers  look for stocks of medium to large  companies  that they
    believe are undervalued at the time of purchase. They use a value investment
    strategy that looks for companies that are  temporarily  out of favor in the
    market. The fund managers attempt to purchase the stock of these undervalued
    companies  and hold them until they have returned to favor in the market and
    their stock prices have gone up.

    Companies  may  be  undervalued  due  to  market  declines,   poor  economic
    conditions,  actual or  anticipated  bad news  regarding  the  issuer or its
    industry,  or because they have been  overlooked by the market.  To identify
    these  companies,  the fund managers  look for  earnings,  cash flows and/or
    assets that may not be reflected  accurately in the companies' stock prices,
    or companies whose dividend  payments appear high when compared to the stock
    prices.

    Although  Value will  invest  primarily  in equity  securities,  it also may
    invest up to 20% of its assets in other types of  securities.  When the fund
    managers  believe  that it is  prudent,  they  also  may  invest  assets  in
    non-leveraged  futures and options.  "Non-leveraged" means that the fund may
    not invest in futures  and  options  where it would be possible to lose more
    than the fund invested.  Futures and options can help the fund's cash assets
    remain liquid while performing more like stocks.

    Additional  information about Value'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?

    * As with all funds,  at any given time the value of your shares of the fund
    may be worth more or less than the price you paid.  If you sell your  shares
    when the value is less than the price you paid, you will lose money.

    * 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.

    * The value of the  fund's  shares  depends  on the value of the  stocks and
    other securities it owns. The value of the individual  securities Value owns
    will go up and down  depending  on the  performance  of the  companies  that
    issued  them,   general  market  and  economic   conditions,   and  investor
    confidence.

    * If the market does not consider the individual  stocks  purchased by Value
    to be  undervalued,  the value of the fund's  shares may not rise as high as
    other  funds and may in fact  decline,  even if stock  prices are  generally
    increasing.

    * Market  performance  tends to be  cyclical  and,  in the  various  cycles,
    certain investment styles may fall in and out of favor. If the market is not
    favoring  the fund's  style,  the fund's  gains may not be as big as, or its
    losses may be bigger than,  other equity  funds using  different  investment
    styles.

    In summary,  Value is intended  for  investors  who seek  long-term  capital
    growth through an equity fund utilizing the value style of investing and who
    are willing to accept the risks associated with that investment strategy.

    FUND PERFORMANCE

    The following  bar chart shows the actual  performance  of Value's  Investor
    Class shares for each calendar year since the fund's  inception on September
    1, 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.


Value                                         American Century Investments


[data shown in bar chart]
     Calendar Year-By-Year Returns (1)
            1998       14.99%
            1997       26.01%
            1996       24.25%
            1995       32.80%
            1994        3.99%

           (1)As of March 31, 1999, the end of the most recent calendar quarter,
           Value's year-to-date return was -4.33%.

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

                        Highest                       Lowest
    Value               12.87% (2Q 1997)              -10.85% (3Q 1998)

    The following  table shows the average annual return of the fund's  Investor
    Class shares for the periods  indicated.  The S&P 500/BARRA  Value Index, an
    unmanaged index that reflects no operating costs, is included as a benchmark
    for performance comparisons.

                                        1 YEAR     5 YEARS      LIFE OF FUND(1)
AVERAGE ANNUAL TOTAL RETURNS (PERIOD ENDED MARCH 31, 1999)
   Value                                -9.88%      17.29%        15.54%
   S&P 500/BARRA
     Value Index                         5.73%      21.36%        18.30%

        (1)The inception date for Value is September 1, 1993.

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

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

     ANNUAL FUND OPERATING EXPENSES
     (EXPENSES THAT ARE DEDUCTED FROM FUND ASSETS)
        Management Fee                                          1.00%
        Distribution and Service (12b-1) Fees                   None
        Other Expenses(1)                                       0.00%
        Total Annual Fund Operating Expenses                    1.00%

        (1)Other  expenses,  which  include the fees and  expenses of the fund's
        independent directors,  their legal counsel,  interest and extraordinary
        expenses, were less than 0.005% for the most recent fiscal year.

           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
                     $102          $318           $551         $1,219

            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.  The  portfolio  managers on the Value
    team are identified as follows:

    PHILLIP N. DAVIDSON, Vice President and Portfolio Manager, has been a member
    of the team that manages Value since joining  American  Century in September
    1993. He has a bachelor's  degree in finance and an MBA from Illinois  State
    University.


Fund Profile                                                          Value


    SCOTT A.  MOORE,  Portfolio  Manager,  has been a  member  of the team  that
    manages Value since October 1996 and Portfolio  Manager since February 1999.
    He joined American Century in August 1993 as an Investment Analyst. He has a
    bachelor's degree in finance from Southern Illinois University and an MBA in
    finance  from the  University  of  Missouri -  Columbia.  He is a  Chartered
    Financial Analyst.

6. HOW DO I BUY FUND SHARES?

    *  Complete and return the enclosed application

    *  Call us and exchange shares from another American Century fund

    *  Call us and send your investment by bank wire transfer

    Your  initial  investment  must be at least $2,500  ($1,000 for  traditional
    IRAs,  Roth IRAs and UGMA/UTMA  accounts)  unless you establish an automatic
    investment  plan of at least  $50 per  month.  If your  redemption  activity
    causes the value of your  account to fall below this account  minimum,  your
    shares may be redeemed involuntarily.

7. HOW DO I SELL FUND SHARES?

    You may sell all or part of your fund shares on any  business day by writing
    or calling  us.  You also may  exchange  your  shares in Value for shares in
    nearly 70 other mutual funds offered by American  Century.  Depending on the
    options you select when you open your account,  some restrictions may apply.
    For your protection, some redemption requests require a signature guarantee.

8. HOW ARE FUND DISTRIBUTIONS MADE AND TAXED?

    Value pays  distributions  of  substantially  all of its income and realized
    capital gains once a year, usually in December. Distributions may be taxable
    as ordinary income, capital gains or a combination of the two. Capital gains
    are taxed at different  rates  depending on the length of time the fund held
    the securities that were sold. Distributions are reinvested automatically in
    additional shares unless you choose another option.

9. WHAT SERVICES ARE AVAILABLE?

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

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

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

    Information   contained  in  our  Investor   Services   Guide   pertains  to
    shareholders  who invest directly with American  Century rather than through
    an employer-sponsored retirement plan or financial intermediary.

    If  you  own  or  are   considering   purchasing   fund  shares  through  an
    employer-sponsored  retirement plan or financial intermediary,  your ability
    to purchase  shares of the fund,  exchange them for shares of other American
    Century  funds,  and  redeem  them will  depend on the terms of your plan or
    financial  intermediary.  If  you  have  questions  about  investing  in  an
    employer-sponsored retirement plan or through a financial intermediary, call
    a Service Representative at 1-800-345-3533.


[american century logo(reg.sm)]
American
Century

FAX   816-340-7962

AMERICAN CENTURY INVESTMENTS
P.O. BOX 419200
KANSAS CITY, MISSOURI 64141-6200

INVESTOR RELATIONS
1-800-345-2021 or 816-531-5575

AUTOMATED INFORMATION LINE
1-800-345-8765

TELECOMMUNICATIONS DEVICE FOR THE DEAF
1-800-634-4113 or 816-444-3485

BUSINESS, NOT-FOR-PROFIT AND
EMPLOYER-SPONSORED RETIREMENT PLANS
1-800-345-353

Visit our Web site at WWW.AMERICANCENTURY.COM [link to web site with arrow]

SH-PRF-16089   9904                                   Funds Distributor, Inc.
<PAGE>
[front cover]

AMERICAN CENTURY

Fund Profile

[american century logo(reg.sm)]
American
Century


Equity Index 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.

[photos of woman and girls blowing bubbles, men talking, woman at computer]

                                                                  APRIL 25, 1999
                                                                  INVESTOR CLASS

 You may obtain the Prospectus and other  information  about the fund at no cost
  by calling us at 1-800-345-2021, accessing our Web site or visiting one of our
   Investor Centers. See the back cover for additional telephone numbers and our
                                                                        address.


EQUITY INDEX FUND

1. WHAT IS THE FUND'S INVESTMENT OBJECTIVE?

    Equity Index seeks  long-term  capital growth by investing  primarily in the
    common stocks contained in the S&P 500 Index.

2. WHAT IS THE FUND'S INVESTMENT STRATEGY?

    Equity  Index  seeks to  match,  as  closely  as  possible,  the  investment
    characteristics  and results of the S&P 500 Index. The fund managers buy and
    sell stocks and other  securities in order to build an investment  portfolio
    that seeks to mirror the S&P 500 Index.

    The fund managers  generally will select stocks for the fund's  portfolio in
    order  of  their  weightings  in the  S&P  500  Index,  beginning  with  the
    heaviest-weighted  stocks.  The fund  attempts  to be fully  invested at all
    times in the stocks that comprise the S&P 500 Index and, in any event,  will
    keep at least 80% of the fund's total assets invested this way.

    The S&P 500 Index is an  unmanaged  index  composed of 500  selected  common
    stocks, most of which are listed on the New York Stock Exchange.  Standard &
    Poor's, a division of The McGraw-Hill  Companies,  Inc.,  chooses the stocks
    included in the S&P 500 Index. The weightings of stocks in the S&P 500 Index
    are based on each stock's total market capitalization  relative to the other
    stocks contained in the index.  Because of this weighting,  the fund expects
    that the 50 largest  companies  will comprise a large  proportion of the S&P
    500 Index.

    When the fund managers believe that it is prudent,  the fund also may invest
    in S&P 500 Index  futures and options.  The fund will  purchase  futures and
    options on a non-leveraged  basis.  "Non-leveraged"  means that the fund may
    not invest in futures  and  options  where it would be possible to lose more
    than the fund  invested.  S&P 500 Index  futures  and  options  can help the
    fund's assets remain liquid while performing more like the S&P 500 Index.

    "Standard & Poor's(reg.tm),"  "Standard & Poor's 500," "S&P 500(reg.tm)" and
    "S&P(reg.tm)"  are trademarks of The McGraw-Hill  Companies,  Inc., and have
    been  licensed  for use by  American  Century.  The  fund is not  sponsored,
    endorsed,  sold or promoted by Standard & Poor's and Standard & Poor's makes
    no representation regarding the advisability of investing in the fund.

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

    * As with all funds,  at any given  time the value of your  shares of Equity
    Index may be worth  more or less  than the price you paid.  If you sell your
    shares when the value is less than the price you paid, you will lose money.

    * 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.

    * The value of Equity  Index's shares depends on the value of the stocks and
    other  securities it owns.  The value of the  individual  securities  Equity
    Index owns will go up and down depending on the performance of the companies
    that issued  them,  general  market and  economic  conditions,  and investor
    confidence.

    * The fund's ability to correlate its  performance  with that of the S&P 500
    Index may be affected by, among other things, changes in securities markets,
    the manner in which the total return of the S&P 500 Index is calculated, the
    size of the fund's portfolio, the amount of cash or cash equivalents held in
    the fund's  portfolio,  and the timing,  frequency  and size of  shareholder
    purchases  and  redemptions.  The fund will use cash flows from  shareholder
    purchase and redemption  activity to maintain,  as closely as possible,  the
    similarity of its portfolio to the securities comprising the S&P 500 Index.

    In  summary,  Equity  Index is intended  for  investors  who seek  long-term
    capital growth by matching,  as closely as possible,  the investment results
    of the S&P 500 Index and who are willing to accept the risks associated with
    the fund's investment strategy.


Equity Index                                  American Century Investments


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

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


     ANNUAL FUND OPERATING EXPENSES
     (EXPENSES THAT ARE DEDUCTED FROM FUND ASSETS)
               Management Fee                                      0.49%
               Distribution and Service (12b-1) Fees               None
               Other Expenses(1)                                   0.00%
               Total Annual Fund Operating Expenses                0.49%

        (1)Other  expenses,  which  include the fees and  expenses of the fund's
        independent directors,  their legal counsel,  interest and extraordinary
        expenses,  are  expected to be less than  0.005% for the current  fiscal
        year.

           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
                              $50                 $157

             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. The advisor has, in turn, hired
    Barclays Global Fund Advisors to make the day-to-day investment decisions
    for the fund. Barclays Global Fund Advisors performs this function under the
    supervision of American Century Investment Management, Inc. and the fund's
    Board of Directors.

6. HOW DO I BUY FUND SHARES?

    *  Complete and return the enclosed application

    *  Call us and exchange shares from another American Century fund

    *  Call us and send your investment by bank wire transfer

    Your  initial  investment  must be at  least  $10,000.  If  your  redemption
    activity  causes  the  value of your  account  to fall  below  this  account
    minimum, your shares may be redeemed involuntarily.

7. HOW DO I SELL FUND SHARES?

    You may sell all or part of your fund shares on any  business day by writing
    or calling us. You also may exchange  your shares in Equity Index for shares
    in nearly 70 other mutual funds  offered by American  Century.  Depending on
    the options you select when you open your  account,  some  restrictions  may
    apply.  For your  protection,  some redemption  requests require a signature
    guarantee.

8. HOW ARE FUND DISTRIBUTIONS MADE AND TAXED?

    Equity Index pays  distributions  from net investment income quarterly.  The
    fund declares and pays  distributions  of net realized  capital gains once a
    year, usually in December.  Distributions may be taxable as ordinary income,
    capital  gains or a  combination  of the two.  Capital  gains  are  taxed at
    different rates depending on the length of time the fund held the securities
    that were sold.  Distributions  are reinvested  automatically  in additional
    shares unless you choose another option.


Fund Profile                                                   Equity Index


9. WHAT SERVICES ARE AVAILABLE?

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

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

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

    Information   contained  in  our  Investor   Services   Guide   pertains  to
    shareholders  who invest directly with American  Century rather than through
    an employer-sponsored retirement plan or financial intermediary.

    If  you  own  or  are   considering   purchasing   fund  shares  through  an
    employer-sponsored  retirement plan or financial intermediary,  your ability
    to purchase  shares of the fund,  exchange them for shares of other American
    Century  funds,  and  redeem  them will  depend on the terms of your plan or
    financial  intermediary.  If  you  have  questions  about  investing  in  an
    employer-sponsored retirement plan or through a financial intermediary, call
    a Service Representative at 1-800-345-3533.


[american century logo(reg.sm)]
American
Century


AMERICAN CENTURY INVESTMENTS
P.O. BOX 419200
KANSAS CITY, MISSOURI 64141-6200

INVESTOR RELATIONS
1-800-345-2021 or 816-531-5575

AUTOMATED INFORMATION LINE
1-800-345-8765

FAX
816-340-7962

TELECOMMUNICATIONS DEVICE FOR THE DEAF
1-800-634-4113 or 816-444-3485

BUSINESS, NOT-FOR-PROFIT AND
EMPLOYER-SPONSORED RETIREMENT PLANS
1-800-345-353

Visit our Web site at WWW.AMERICANCENTURY.COM [link to web site with arrow]

SH-PRF-16095   9904                                   Funds Distributor, Inc.


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