AMERICAN CENTURY MUTUAL FUNDS INC
485APOS, 1998-11-30
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               SECURITIES AND EXCHANGE COMMISSION
                    Washington, D.C.   20549

                           FORM N-1A

REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933               [X]

     File No. 2-14213

     Pre-Effective Amendment No.                                      [ ]

     Post-Effective Amendment No. 79                                  [X]

                             and/or

REGISTRATION STATEMENT UNDER THE INVESTMENT COMPANY ACT OF 1940       [X]
     
     File No. 811-0816

     Amendment No. 79                                                 [X]

                        (Check appropriate box or boxes.)


                       AMERICAN CENTURY MUTUAL FUNDS, INC.
       _________________________________________________________________
               (Exact Name of Registrant as Specified in Charter)


                     4500 Main Street, Kansas City, MO 64111
       _________________________________________________________________
               (Address of Principal Executive Offices) (Zip Code)


       Registrant's Telephone Number, including Area Code: (816) 531-5575


            William M. Lyons, 4500 Main Street, Kansas City, MO 64111
       _________________________________________________________________
                     (Name and Address of Agent for Service)

         Approximate Date of Proposed Public Offering: January 29, 1999

It is proposed that this filing will become effective (check
appropriate box)

     [ ] immediately upon filing pursuant to paragraph (b)
     [ ] on (date) pursuant to paragraph (b)
     [X] 60 days after filing pursuant to paragraph (a)(1)
     [ ] on (date) pursuant to paragraph (a)(1)
     [ ] 75 days after filing pursuant to paragraph (a)(2)
     [ ] on (date) pursuant to paragraph (a)(2) of rule 485.

If appropriate, check the following box:

     [ ] This post-effective amendment designates a new effective date for a 
         previously filed post-effective amendment.
<PAGE>
[american century logo(reg.sm)]
American
Century

Prospectus

January 29, 1999
- --------------------------------------------------------------------------------

AMERICAN CENTURY

Growth
Ultra
Select
Vista
Heritage

Investor Class

The Securities and Exchange Commission has not approved or disapproved these
securities or determined if this Prospectus is accurate or complete. Anyone who
tells you otherwise is committing a crime.

Distributed by Funds Distributor, Inc.



Reading a prospectus doesn't have to be a chore. We've done the hard work so you
can focus on what's  important--learning  about the fund. Take a look inside and
you'll see this  prospectus  is  different  from  others.  It takes a  clear-cut
approach to fund information.

Here's what you'll find:

o    The fund's primary investments and risks

o    A description of who may or may not want to invest in the fund

o    Fund performance,  including returns for each year, best and worst quarters
     and average annual returns compared to the fund's benchmarks

o    An overview of ways to best manage your accounts

o    Helpful tips and definitions of key investment terms

Whether  you're a current  investor or  investing  in mutual funds for the first
time, this prospectus  will give you a clear  understanding  of the fund. If you
have questions,  our Investor Services Representatives are available weekdays, 7
a.m. to 7 p.m.  Central time. Our toll-free  number is  1-800-345-2021.  We look
forward to helping you achieve your financial goals.

                                      Sincerely,


                                      Mark Killen
                                      Senior Vice President
                                      American Century Investment Services, Inc.




Table of Contents

An Overview of the Funds......................................2

Fees and Expenses.............................................3

Detailed Information about the Funds..........................4

         Growth
         Ultra
         Select
         Vista
         Heritage

Management....................................................7

Investing with American Century..............................XX

Share Price and Distributions................................XX

Taxes........................................................XX

Multiple Class Information...................................XX

Financial Highlights.........................................XX

At Your Service..............................................XX

Fund Reference
                  Fund Code              Ticker          Newspaper Listing
- --------------------------------------------------------------------------
Growth            020                    TWCGX           Growth
Ultra             022                    TWCUX           Ultra
Select            021                    TWCIX           Select
Vista             024                    TWCVX           Vista
Heritage          030                    TWHIX           Heritage
- --------------------------------------------------------------------------

**********LEFT MARGIN CALLOUTS

Throughout this book you'll find definitions of key investment terms and
phrases. When you see a word printed in green italics, look for its definition
in the left margin.

*........This symbol highlights special information and helpful tips.

**********END LEFT MARGIN CALLOUTS



An Overview of the Funds

What are the funds' investment goals?

These funds seek long-term capital growth.

What are the funds' primary investment strategies and principal risks?

The funds look for common stocks of growing companies. The basis of the strategy
used by these funds is that, over the long term, stocks of companies with
earnings and revenue growth have a greater than average chance to increase in
value over time. A more detailed description of American Century's "growth"
investment style begins on page xx.

The funds' principal risks include:

o Market Risk              The value of a fund's shares will go up
                           and down based on the performance of the companies
                           whose securities it owns and other factors affecting
                           the securities market generally.

o Price Volatility         The value of the funds' shares may fluctuate 
                           significantly in the short term. 

o Principal Loss           As with all mutual funds, if you sell your
                           shares when their value is less than the price you
                           paid, you will lose money.

Who may want to invest in the funds?

The funds may be a good investment if you are

0   seeking long-term capital growth from your investment

0   comfortable with the funds' short-term price volatility

0   comfortable with the risks associated with the funds' investment strategy

0   investing through an IRA or other tax-advantaged retirement plan

Who may not want to invest in the funds?

The funds may not be a good investment if you are

0   seeking current income from your investment

0   investing for a short period of time

0   uncomfortable with short-term volatility in the value of your investment

**********LEFT MARGIN CALLOUTS


*    An investment in the funds is not a bank deposit and is not insured or
     guaranteed by the Federal Deposit Insurance Corporation or any other
     government agency.

**********END LEFT MARGIN CALLOUTS




Fees and Expenses

There are no sales loads or fees or other charges

0   to buy fund shares directly from American Century

0   to reinvest dividends in additional shares

0   to exchange into the Investor Class shares of other American Century funds.

The following tables describe the fees and expenses that you may pay if you buy
and hold shares of the funds.

Annual Operating Expenses (expenses that are deducted from fund assets)
           Management Fee1  Distribution and       Other      Total Annual Fund
                            Service (12b-1) Fees   Expenses2  Operating Expenses
Growth     1.00%            None                   0.00%      1.00%
Ultra      1.00%            None                   0.00%      1.00%
Select     1.00%            None                   0.00%      1.00%
Vista      1.00%            None                   0.00%      1.00%
Heritage   1.00%            None                   0.00%      1.00%

1   A  portion  of the  management  fee  may be paid by the  funds'  advisor  to
    unaffiliated  third  parties who provide  recordkeeping  and  administrative
    services that would otherwise be performed by an affiliate of the manager.

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

Example of Hypothetical Fund Costs

The examples in the table below are intended to help you compare the costs of
investing in a fund with those of other mutual funds. Assuming you ...

o        invest $10,000 in the fund

o        redeem all of your shares at the end of the periods shown below

o        earn a 5% return each year and

o        incur the same operating expenses shown above

 ... your cost of investing in the fund would be:
             1 Year             3 Years             5 Years             10 Years
Growth       $102               $318                $551                $1,219
Ultra        $102               $318                $551                $1,219
Select       $102               $318                $551                $1,219
Vista        $102               $318                $551                $1,219
Heritage     $102               $318                $551                $1,219

**********LEFT MARGIN CALLOUTS

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

**********END LEFT MARGIN CALLOUTS




Detailed Information about the Funds

Growth
Ultra
Select
Vista
Heritage

What are the funds' investment objectives?

These funds seek long-term capital growth. This is a fundamental policy and
cannot be changed without shareholder approval.

How do the funds pursue their investment objectives?

The fund managers look for stocks of companies that they believe will increase
in value over time, using a growth investment strategy developed by American
Century. This strategy looks for companies with earnings and revenues that are
not only growing, but growing at a successively faster, or accelerating, pace.
This strategy is based on the premise that, over the long term, the stocks of
companies with accelerating earnings and revenues have a greater-than-average
chance to increase in value.

The managers use a bottom-up approach to select stocks to buy for the funds.
That means they first look for strong, growing companies to invest in, rather
than simply buying any company in a growing industry or sector. Using American
Century's extensive computer database, the managers track financial information
for thousands of companies to identify trends in the companies' earnings and
revenues. This information is used to help the fund managers select or decide to
continue to hold the stocks of companies they believe will be able to sustain
accelerating growth, and to sell stocks of companies whose growth begins to slow
down.

Although most of the funds' assets will be invested in U.S. companies, there is
no limit on the amount of assets the funds can invest in foreign companies. Most
of the funds' foreign investments are in companies located and doing business in
developed countries. Investments in foreign securities present some unique risks
that are more fully described in the funds' Statement of Additional Information.

**********LEFT MARGIN CALLOUT

*    Accelerating growth is shown, for example, by growth that is faster this
     quarter than last or faster this year than the year before.

**********END LEFT MARGIN CALLOUT

The fund managers do not attempt to time the market. Instead, they intend to
keep the funds essentially fully invested in stocks regardless of the movement
of stock prices generally. When the managers believe that it is prudent, the
funds may invest a portion of their assets in convertible securities, foreign
securities, short-term instruments, non-leveraged stock index futures contracts
and other similar securities. Stock index futures contracts, a type of
derivative security, can help the funds' cash assets remain liquid while
performing more like stocks. The funds have a policy governing stock index
futures and similar derivative securities to help manage the risk of these types
of investments. For example, the managers cannot leverage the funds' assets by
investing in a derivative security. A complete description of the derivatives
policy is included in the Statement of Additional Information.

Additional information about the funds' investments is available in their annual
and semiannual reports. In these reports you will find a discussion of the
market conditions and investment strategies that significantly affected the
funds' performance during the most recent six-month period. You may get these
reports at no cost by calling us.



What kinds of securities do the funds buy?

The funds will usually purchase common stocks of U.S. and foreign companies, but
they can purchase other types of securities, as well, such as domestic and
foreign preferred stocks, convertible securities, equity equivalent securities,
notes, bonds and other debt securities. The funds limit their purchase of debt
securities to investment-grade obligations.

What is the difference between the funds?

0    Growth, Ultra and Select generally invest in larger companies, although
     they may purchase companies of any size. Companies considered to be large
     generally have a market capitalization in excess of $5 billion.
0    Vista and Heritage generally invest in medium-sized and smaller companies,
     although they may purchase companies of any size. Companies considered to
     be medium sized generally have a market capitalization between $1 billion
     and $5 billion, and smaller companies generally have a market
     capitalization below $1 billion.
0    Eighty percent (80%) of Select's and 60% of Heritage's assets must be
     invested in securities of companies that pay regular dividends, or have
     committed to pay dividends, or otherwise produce income. This reflects the
     funds' strategy to invest most of their assets in stocks of companies that
     are successful enough to pay dividends. The amount of dividends may not be
     significant, however, since stocks are not picked based upon the amount of
     income they produce. The remaining 20% of Select's and 40% of Heritage's
     assets may be invested in any other permissible securities that the fund
     managers believe will help the funds achieve their objectives.

**********LEFT MARGIN CALLOUT

     Market capitalization means the value of a company, as determined by
multiplying the number of shares of its stock outstanding by its current market
price per share.

**********END LEFT MARGIN CALLOUT

What are the primary risks of investing in the funds?

o    The value of a fund's shares depends on the value of the stocks and other
     securities it owns. The value of the individual securities a fund owns will
     go up and down depending on the performance of the companies that issued
     them, general market and economic conditions, and investor confidence.
o    The fund managers may buy a large amount of a company's stock quickly, and
     often will dispose of it quickly if the company's earnings or revenues
     decline. While the managers believe this strategy provides substantial
     appreciation potential over the long term, in the short term it can create
     a significant amount of share price volatility. This volatility can be
     greater than that of the average stock fund.
o    As with all funds, at any given time, the value of your shares 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.
o    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 funds' style, the funds' gains may not be as big as, or their
     losses may be bigger than, other equity funds using different investment
     styles.
o    Foreign securities can have certain unique risks, including fluctuations in
     currency exchange rates, unstable political and economic structures,
     reduced availability of public information and lack of uniform financial
     reporting and regulatory practices similar to those that apply to U.S.
     issuers. These factors make investing in foreign securities generally
     riskier than investing in U.S. stocks. To the extent the fund invests in
     foreign securities, the overall risk of the fund could be affected.

These funds are intended for investors who seek long-term capital growth through
an aggressive equity fund and who are willing to accept the risks associated
with the funds' investment strategies.





Fund Performance History

The performance information on this page is designed to help you see how fund
returns can vary. Keep in mind that past performance does not predict how the
funds will perform in the future.

Annual Total Returns

The following bar chart shows the performance of the funds' Investor Class
shares for each of the last 10 calendar years (or for each full year in the life
of the fund if less than 10 years). It indicates the volatility of the funds'
historical returns from year to year.

[GRAPH DEPICTING 10 YEAR ANNUAL TOTAL RETURNS FOR GROWTH,  ULTRA,  SELECT, VISTA
AND HERITAGE; UPDATED FIGURES NOT AVAILABLE]

Highest and Lowest Quarterly Returns
The highest and lowest returns of the funds' Investor Class shares for a
calendar quarter during the last 10 calendar years (or during the life of the
fund if less than 10 years) are provided below to indicate the funds' historical
short-term volatility. Shareholders should be aware, however, that these funds
are intended for investors with a long-term investment horizon and are not
managed for short-term results.

[GRAPH DEPICTING HIGHEST AND LOWEST RETURNS FOR GROWTH, ULTRA, SELECT, VISTA AND
HERITAGE; UPDATED FIGURES NOT AVAILABLE]

Average Annual Returns

The following table shows the average annual returns of the funds' Investor
Class shares for the periods indicated during the last 10 calendar years. The
benchmarks are included for long-term performance comparison. The benchmarks are
unmanaged indices that have no operating costs.

                                      1 year          5 years          10 years
- --------------------------------------------------------------------------------
Growth                                XXX%            XXX%             XXX%
Russell 1000 Growth Index             XXX%            XXX%             XXX%
- --------------------------------------------------------------------------------
Ultra                                 XXX%            XXX%             XXX%
S&P 500 Index                         XXX%            XXX%             XXX%
- --------------------------------------------------------------------------------
Select                                XXX%            XXX%             XXX%
S&P 500 Index                         XXX%            XXX%             XXX%
- --------------------------------------------------------------------------------
Vista                                 XXX%            XXX%             XXX%
Russell 2500 Growth Index             XXX%            XXX%             XXX%
- --------------------------------------------------------------------------------
Heritage                              XXX%            XXX%             XXX%
S&P Mid Cap 400 Index                 XXX%            XXX%             XXX%
- --------------------------------------------------------------------------------

**********LEFT MARGIN CALLOUTS

The funds' total returns for the period from January 1, 1998, to September 30,
1998, are:

Growth                                                              XXX%
Ultra                                                               XXX%
Select                                                              XXX%
Vista                                                               XXX%
Heritage                                                            XXX%

*    For current performance information, please call us at 1-800-345-2021 or
     visit American Century's Web site at www.americancentury.com.

**********END LEFT MARGIN CALLOUTS




Management

Who manages the funds?

The Board of Directors, investment advisor and fund management team play key
roles in the management of the funds.

The Board of Directors

The Board of Directors oversees the management of the funds and meets at least
quarterly to review reports about fund operations. Although the Board of
Directors does not manage the funds, it has hired an investment advisor to do
so. More than half of the Directors are independent of the funds' advisor, that
is, they are not employed by and have no financial interest in the advisor.

The Investment Advisor

The funds' investment advisor is American Century Investment Management, Inc.
The advisor has been managing mutual funds since 1958. American Century is
headquartered at 4500 Main Street, Kansas City, Missouri 64111.

The advisor is responsible for managing the investment portfolios of the funds
and directing the purchase and sale of their investment securities. The advisor
also arranges for transfer agency, custody and all other services necessary for
the funds to operate.

For the services it provided to the funds during their most recent fiscal year,
the advisor received a unified management fee of 1.0% of the average net assets
of each fund. The amount of the management fee is calculated daily and paid
monthly. Out of that fee, the advisor paid all expenses of managing and
operating the fund except brokerage expenses, taxes, interest, fees and expenses
of the independent Directors (including legal counsel fees) and extraordinary
expenses.




The Fund Management Teams

The advisor uses teams of portfolio managers, assistant portfolio managers and
analysts to manage the funds. Teams meet regularly to review portfolio holdings
and to discuss purchase and sale activity. Team members buy and sell securities
for a fund as they see fit, guided by the fund's investment objective and
strategy.

Portfolio Manager members of the investment teams are identified below:

Growth
C. Kim Goodwin
Ms. Goodwin, Vice President and Portfolio Manager, has been a member of the team
that manages Growth since joining American Century in October 1997. Before
joining American Century, she served as Senior Vice President and Portfolio
Manager at Putnam Investments from May 1996 to September 1997 and Vice President
and Portfolio Manager at Prudential Investments from February 1993 to April
1996. She has a bachelor of arts from Princeton University and an MBA in finance
from the University of Texas.

Gregory J. Woodhams
Mr. Woodhams, Portfolio Manager, has been a member of the team that manages
Growth since he joined American Century in September 1997 as an Investment
Analyst. Mr. Woodhams was promoted to Portfolio Manager for the Growth team in
May 1998. Before joining American Century, he served as Vice President and
Director of Equity Research for Texas Commerce Bank, a subsidiary of Chase
Manhattan Bank. He has a bachelor's degree in economics from Rice University and
an MBA in economics from the University of Wisconsin. He is a Chartered
Financial Analyst.

Ultra
James E. Stowers III
Mr. Stowers, Chief Executive Officer and Portfolio Manager, joined American
Century as a portfolio manager of Ultra and other American Century
growth-oriented funds in 1981. He has a bachelor's degree in finance from
Arizona State University.

John R. Sykora
Mr. Sykora, Vice President and Portfolio Manager, has been a member of the team
that manages Ultra since August 1997. He joined American Century in May 1994 as
an Investment Analyst. Before joining American Century, he served as a Financial
Analyst for Business Men's Assurance Company of America, Kansas City, Missouri
from August 1993 to April 1994. He has a bachelor's degree in accounting finance
and an MBA in finance from Michigan State University. He is a Chartered
Financial Analyst.

Bruce A. Wimberly
Mr. Wimberly, Vice President and Portfolio Manager, has been a member of the
team that manages Ultra since July 1996. He joined American Century in September
1994 as an Investment Analyst. Before joining American Century, he attended
Kellogg Graduate School of Management, Northwestern University from August 1992
to August 1994, where he obtained his MBA. He has a bachelor of arts from
Middlebury College and an MBA in finance from Kellogg Graduate School of
Management.

Select
Jean C. Ledford
Ms. Ledford, Vice President and Portfolio Manager, has been a member of the team
that manages Select since joining American Century in January 1997. Prior to
joining American Century, she worked for the State of Wisconsin Investment Board
as an Investment Director from 1994 to 1996, and as an Assistant Investment
Director from 1983 to 1994. She has a bachelor of arts and an MBA in finance
from the University of Wisconsin. She is a Chartered Financial Analyst.

Richard S. Welsh
Mr. Welsh, Portfolio Manager, has been a member of the team that manages Select
since May 1998. He joined American Century in August 1994 as an Equity Research
Analyst and was promoted to Investment Analyst in January 1997. Prior to joining
American Century, he served as Equity Research Analyst for Brown Brothers
Harriman & Company. He has a bachelor's degree in economics from Boston
University and an MBA in finance and accounting from New York University.

Vista
Arnold K. Douville
Mr. Douville, Vice President and Portfolio Manager, has been a member of the
team that manages Vista since joining American Century in November 1997. Before
joining American Century, he served as Senior Portfolio Manager for Munder
Capital Management from September 1989 to October 1997. He has a bachelor's
degree in economics from the U.S. Air Force Academy and an MBA in finance,
statistics and economics from the University of Chicago.

Glenn A. Fogle
Mr. Fogle, Vice President and Portfolio  Manager,  has been a member of the team
that manages  Vista since March 1993.  He joined  American  Century in September
1990 as an Investment  Analyst.  He has a bachelor of arts and an MBA in finance
from Texas Christian University. He is a Chartered Financial Analyst.

Heritage
Harold S. Bradley
Mr. Bradley, Vice President and Portfolio Manager, has been a member of the team
that manages Heritage since March 1998. He joined American Century in 1988 and
for the past 10 years, has managed the global equity, futures and foreign
exchange trading activities for American Century. He has a bachelor of arts from
Marquette University.

Linda K. Peterson
Ms. Peterson, Portfolio Manager, has been a member of the team that manages
Heritage since March 1998. She joined American Century in 1986. She served as an
Investment Analyst for American Century's growth-oriented equity funds,
including Heritage, from April 1994 until February 1998. She has a bachelor's
degree in finance from the University of Northern Iowa and an MBA from the
University of Missouri-Kansas City. She is a Chartered Financial Analyst.

**********LEFT MARGIN CALLOUTS

*    Code of Ethics
     American Century has a Code of Ethics designed to ensure that the interests
     of fund shareholders come before the interests of the people who manage the
     funds. Among other provisions, the Code of Ethics prohibits portfolio
     managers and other investment personnel from buying securities in an
     initial public offering or from profiting from the purchase and sale of the
     same security within 60 calendar days. In addition, the Code of Ethics
     requires portfolio managers and other employees with access to information
     about the purchase or sale of securities by the funds to obtain approval
     before executing permitted personal trades.

**********END LEFT MARGIN CALLOUTS




Fundamental Investment Policies

Fundamental investment policies contained in the Statement of Additional
Information and the investment objectives of the funds may not be changed
without a shareholder vote. The Board of Directors may change any other policies
and investment strategies.

Year 2000 Issues

Many of the world's computer systems currently cannot properly recognize or
process date-sensitive information relating to the Year 2000 and beyond. Because
this may impact the computer systems of various American Century-affiliated and
external service providers for the funds, American Century formally initiated a
Year 2000 readiness project in July 1997. It involves a team of information
technology professionals assisted by outside consultants and guided by a
senior-level steering committee. The team's goal is to assess the impact of the
Year 2000 on American Century's systems, renovate or replace noncompliant
critical systems and test those systems. In addition, the team has been working
to gather information about the Year 2000 efforts of the funds' other major
service providers. Although American Century believes its critical systems will
function properly in the Year 2000, this is not guaranteed. If the efforts of
American Century or its external service providers are not successful, the
funds' business, particularly the provision of shareholder services, may be
hampered.

In addition, the issuers of securities the funds own could have Year 2000
computer problems. These problems could negatively affect the value of their
securities, which, in turn, could impact the funds' performance. The advisor has
established a process to gather publicly available information about the Year
2000 readiness of these issuers. However, this process may not uncover all
relevant information, and the information gathered may not be complete and
accurate. Moreover, an issuer's Year 2000 readiness is only one of many factors
the fund managers may consider when making investment decisions, and other
factors may receive greater weight.




Investing With American Century

Services Automatically Available to You

You automatically will have access to the services listed below when you open
your account. If you do not want these services, see "Conducting Business in
Writing" below.

Conducting Business in Writing

If you prefer to conduct business in writing only, you can indicate this on the
account application. If you choose to do business in writing only, you must
provide written instructions to invest, exchange and redeem. All account owners
must sign transaction instructions (with signatures guaranteed for redemptions
in excess of $100,000). If you want to add services later, you can complete an
Investor Service Options form.

<TABLE>
Ways to Manage Your Account
- -------------------------------------------------------------------------------------------------------------------------------
- ---------------------------------- ---------------------------------------------- -----------------------------------------------
<S>                                <C>                                            <C>
By telephone                       Open an account                                Make additional investments
Investor Services                  If you are a current investor, you             Call us or use our Automated Information Line
1-800-345-2021                     can open an account by exchanging              if you have authorized us to invest from your
7 a.m. to 7 p.m. Central time      shares from another American Century           bank account.
                                   account. (This service is not
Automated Information Line         available if you have chosen to do             Sell shares
1-800-345-8765                     business in writing only.)                     Call an Investor Services Representative.
24 hours a day
seven days a week                  Exchange shares
                                   Call us or use our Automated Information Line
                                   if you have authorized us to accept telephone
                                   instructions.
- ---------------------------------- ---------------------------------------------- -----------------------------------------------
- ---------------------------------- ---------------------------------------------- -----------------------------------------------
By mail or fax                     Open an account                                Make additional investments 
PO Box 419200                      Send a signed and completed                    Send us your check or money order for at 
Kansas City, MO 64141-6200         application and check or money order           least $50 with an investment slip or $250
                                   payable to American Century                    without an investment slip. If you don't have
Fax 816-340-7962                   Investments.                                   an investment slip, include your name,
                                                                                  address and account number on your check or
                                   Exchange shares                                money order.
                                   Send us written instructions to
                                   exchange your shares from one                  Sell shares
                                   American Century account to another.           Send us written instructions to sell shares
                                                                                  or send us a redemption form. Call an
                                                                                  Investor Services Representative to request a
                                                                                  form.
- ---------------------------------- ---------------------------------------------- -----------------------------------------------
- ---------------------------------- ---------------------------------------------- -----------------------------------------------
Online                             Open an account                                Make additional investments
www.americancentury.com            If you are a current investor, you             Follow the instructions online if you have
                                   can open an account by exchanging              authorized us to invest from your bank
                                   shares from another American Century           account.
                                   account online. (This service is not
                                   available if you have chosen to do             Sell shares
                                   business in writing only.)                     Not available.

                                   Exchange shares
                                   Exchange shares from another American Century
                                   account.





A Note About Mailings to Shareholders

To reduce expenses and demonstrate respect for our environment, we will deliver
most financial reports, prospectuses and account statements to households in a
single envelope, even if the accounts are registered under different names. If
you would like additional copies of financial reports and prospectuses or
separate mailing of account statements, please call us.

Your Guide to Services and Policies

When you open an account, you will receive an Investor Services Guide, which
explains the services available to you and the policies of the fund and the
transfer agent.

- ---------------------------------------------------------------------------------------------------------------------------------
- -------------------------------- ----------------------------------------------   -----------------------------------------------
By wire                          Open an account                                  Make additional investments
                                 Call us to set up your account or mail           Follow the wire instructions provided in the
                                 a completed application to the address           "Open an account" section
                                 provided in the "By Mail" section and
                                 give your bank:                                  Sell shares
                                 o  Our bank information:                         You can receive redemption proceeds by
*    Please remember that           -     Commerce Bank N.A.                      wire  or electronic transfer.  (This
     if you request                 -     Routing No. 101000019                   service is not available if you have
     redemptions by wire, $10       -     ACMF Account No. 2804918                chosen to do business in writing only.)
     will be deducted from the   o        The fund name
     amount wired. Your bank     o        Your American Century account number
     also may charge a fee.      o        Your name
                                 o        The contribution year (for IRAs only)   Exchange shares
                                                                                  Not available.

- -------------------------------- ------------------------------------------------ -----------------------------------------------
- -------------------------------- ------------------------------------------------ -----------------------------------------------
Automatically                    Open an account                                  Make additional investments
                                 Not available.                                   Select "Establish Automatic Investments" on
                                                                                  your application to make automatic purchases
                                 Sell shares                                      of shares on a regular basis. You must invest
                                 If you have at least $10,000 in your             at least $600 per year per account.
                                 account, sell shares automatically by
                                 establishing Check-A-Month or Automatic          Exchange shares
                                 Redemption.                                      Send us written instructions to set up an
                                                                                  automatic exchange of your shares from one
                                                                                  American Century account to another.

- -------------------------------- ------------------------------------------------ -----------------------------------------------
- -------------------------------- ------------------------------------------------------------------------------------------------
In person                        If you prefer to handle your
                                 transactions in person, visit one of our
                                 Investor Centers and a representative can help
                                 you open an account, make additional
                                 investments, sell or exchange shares. Here are
                                 the Investor Centers you can visit

                                 4500 Main Street                        4917 Town Center Dr.
                                 Kansas City, Missouri                   Leawood, Kansas

                                 1665 Charleston Road                    2000 S. Colorado Blvd.
                                 Mountain View, California               Denver, Colorado
</TABLE>








Minimum Initial Investment Amounts

To open an account the minimum investments are as follows for:
- ----------------------------------------------------------------------
Individual or Joint                                            $2,500
Traditional IRA                                                $1,000
Roth IRA                                                       $1,000
Education IRA                                                    $500
UGMA/UTMA                                                      $1,000
403(b)                                                     No minimum

Redemption of shares in low-balance accounts

If your account falls below the minimum balance we will notify you and give you
90 days to meet the minimum or, for most types of equity accounts, to establish
an automatic monthly investment. If you do not meet the deadline, American
Century will redeem the shares in the account and send the proceeds to your
address of record.

Special requirements for large redemptions

The funds have elected to be governed by Rule 18f-1 under the Investment Company
Act, which obligates each fund to make certain redemptions in cash. This
requirement applies when a shareholder redeems, during any 90-day period, up to
the lesser of $250,000 or 1% of the assets of the fund. Although we normally
will pay redemptions in excess of this limitation in cash, American Century
reserves the right under unusual circumstances to honor these redemptions in
kind by making payment in whole or in part in readily marketable securities.

If we make payment in securities, we will value the securities, selected by the
fund, in the same manner as we do in computing the fund's net asset value. We
will provide these securities to the redeeming plan participant or financial
intermediary in lieu of cash without prior notice. If your redemption would
exceed this limit and you would like to avoid being paid in securities, please
provide us with an unconditional instruction to redeem at least 15 days prior to
the date on which the redemption transaction is to occur. The instruction must
specify the dollar amount or number of shares to be redeemed and the date of the
transaction. This minimizes the effect of the redemption on the fund and its
remaining shareholders.

While each fund reserves the right to redeem fund shares through a
redemption-in-kind, we do not expect to exercise this option unless a fund has
an unusually low level of cash to meet redemptions and/or is experiencing
unusually strong demands for its cash. Such a demand might be caused, for
example, by extreme market conditions that result in an abnormally high level of
redemption requests concentrated in a short period of time. Absent these or
similar circumstances, we expect redemptions in excess of $250,000 to be paid in
cash in any fund with assets of more than $50 million if total redemptions from
any one account in any 90-day period do not exceed one-half of 1% of the total
assets of the fund.

Investing Through Financial Intermediaries

If you do business with us through a financial intermediary or a retirement
plan, your ability to purchase, exchange and redeem shares will depend on the
policies of that entity. Some policy differences may include

o        minimum investment requirements
o        exchange policies
o        fund choices
o        cut-off time for investments

Please contact your financial intermediary or plan sponsor for a complete
description of its policies. Copies of the funds' annual reports, semiannual
reports and Statements of Additional Information are available from your
intermediary or plan sponsor.

Certain financial intermediaries perform recordkeeping and administrative
services for their clients that would otherwise be performed by American
Century's transfer agent. In some circumstances, American Century will pay the
service provider a fee for performing those services.

Although transactions in fund shares may be made directly with American Century
at no charge, you also may purchase, redeem and exchange fund shares through
financial intermediaries that charge a transaction-based or other fee for their
services. Those charges are retained by the intermediary and are not shared with
American Century or the funds.

American Century has contracts with certain financial intermediaries in which
they represent that they will track the time investment orders are received. The
funds have authorized those intermediaries to accept orders on each fund's
behalf up to the time net asset value is determined. Such orders will be priced
at the net asset value next determined after acceptance of the order on a fund's
behalf.

**********LEFT MARGIN CALLOUTS

* Financial intermediaries include banks, broker-dealers, insurance companies
and investment advisors.

**********END LEFT MARGIN CALLOUTS




Share Price and Distributions

Share Price

We determine the net asset value of the funds as of the close of regular trading
on the New York Stock Exchange (usually 4 p.m. Eastern time) on each day the
Exchange is open. On days when the Exchange is not open, we do not calculate the
net asset value. The net asset value of a fund share is the current value of its
investments, minus any liabilities, divided by the number of fund shares
outstanding.

If current prices of securities owned by a fund are not readily available from
an independent pricing service, the advisor may determine their fair value in
accordance with procedures adopted by the fund's Board of Directors. Trading of
securities in foreign markets may not take place on every day the Exchange is
open. Also, trading in some foreign markets may take place on weekends or
holidays when a fund's net asset value is not calculated. So, the value of a
fund's portfolio may be affected on days when you can't purchase or redeem
shares of the fund.

We will price your purchase, exchange or redemption at the net asset value next
determined after we receive your transaction request in good order.

Distributions

Federal tax laws require each fund to make  distributions to its shareholders in
order  to  qualify  as a  "regulated  investment  company."  Qualification  as a
regulated  investment  company means that the funds will not be subject to state
or federal  income  tax on  amounts  distributed.  The  distributions  generally
consist of dividends and interest received, as well as capital gains realized on
the sale of investment securities.  Each fund pays distributions from net income
monthly. Each fund generally pays distributions of capital gains, if any, once a
year in December.  A fund may make more frequent  distributions  if necessary to
comply with Internal Revenue Code provisions.

Participants in employer-sponsored retirement or savings plans must reinvest all
distributions. For shareholders investing through taxable accounts, we will
reinvest distributions unless you elect to receive them in cash. Please consult
our Investor Services Guide for further information regarding distributions and
your distribution options.

**********LEFT MARGIN CALLOUTS

The net asset value of a fund is the price of the fund's shares.

Capital gains is the increase in value of a capital asset, such as stock, from
the time it is purchased. Tax becomes due on capital gains once the asset is
sold.

**********END LEFT MARGIN CALLOUTS





Taxes

The tax consequences of owning shares of the funds will vary depending on
whether you own them through a taxable or tax-deferred account. Tax consequences
result from distributions by the funds of dividend and interest income it has
received and capital gains it has generated through its investment activities,
and by sales of fund shares by investors after the net asset value has increased
or decreased.

Tax-Deferred Accounts

If you purchase fund shares through a tax-deferred account, such as an IRA or a
qualified employer-sponsored retirement or savings plan, income and capital
gains distributions usually will not be subject to current taxation, but will
accumulate in your account under the plan on a tax-deferred basis. Likewise,
moving from one fund to another fund within a plan or tax-deferred account
generally will not cause you to be taxed. For information about the tax
consequences of making purchases or withdrawals through an employer sponsored
retirement or savings plan, or through an IRA, please consult your plan
administrator, your summary plan description or a professional tax advisor.

Taxable Accounts

If you own fund shares through a taxable account, distributions by the fund and
sales by you of fund shares may cause you to be taxed.

Taxability of Distributions

Fund distributions may consist of income earned by the fund from sources such as
dividends and interest, or capital gains generated from the sale of fund
investments. Distributions of income are taxed as ordinary income. Distribution
of capital gains are classified either as short term or long term and are taxed
as follows:

<TABLE>
Type of Distribution     Tax rate for 15% Bracket Tax rate for 28% Bracket or above
- ------------------------ ------------------------ ---------------------------------
<S>                     <C>                      <C>
Short-term capital gains   Ordinary income rate          Ordinary income rate
Long-term capital gains             10%                          20%
</TABLE>

The tax status of any distribution of capital gains is determined by how long
the fund held the underlying security that was sold, not by how long you have
been invested in the fund or whether you reinvest your distributions in
additional shares or take them as income. American Century will detail the tax
status of fund distributions for each calendar year in an annual tax statement
from the fund.

Distributions also may be subject to state and local taxes. Because everyone's
tax situation is unique, always consult your tax professional about federal,
state and local tax consequences.

Taxes on Transactions

Your redemptions -- including exchanges to other American Century funds -- are
subject to capital gains tax. The table above can provide a general guide for
your potential tax liability when selling or exchanging fund shares. "Short-term
capital gains" are gains on fund shares held for 12 months or less. "Long-term
capital gains" are gains on fund shares held for more than 12 months. If your
shares decrease in value, their sale or exchange will result in a long-term or
short-term capital loss.

**********LEFT MARGIN CALLOUTS

*    Buying a Dividend
     Purchasing fund shares in a taxable account shortly before a distribution
     is sometimes known as "buying a dividend." In taxable accounts, you must
     pay income taxes on the distribution whether you take the distribution in
     cash or reinvest it. In addition, you will have to pay taxes on the
     distribution whether the value of your investment decreased, increased or
     remained the same after you bought the fund shares. The risk in buying a
     dividend is that a fund's portfolio may build up taxable gains throughout
     the period covered by a distribution, as securities are sold at a profit.
     We distribute those gains to you, after subtracting any losses, even if you
     did not own the shares when the gains occurred. Thus if you buy a dividend,
     you incur the full tax liability of the distribution period, but you may
     not enjoy the full benefit of the gains realized in the fund's portfolio.

**********END LEFT MARGIN CALLOUTS

Multiple Class Information

American Century offers three classes of the funds: Investor Class,
Institutional Class and Advisor Class. The shares offered by this Prospectus are
Investor Class shares and have no up-front or deferred charges, commissions, or
12b-1 fees.

American Century offers the other classes of shares primarily to institutional
investors, through institutional distribution channels, such as
employer-sponsored retirement plans, or through banks, broker-dealers and
insurance companies. The other classes have different fees, expenses, and/or
minimum investment requirements than the Investor Class. The difference in the
fee structures among the classes is the result of their separate arrangements
for shareholder and distribution services and not the result of any difference
in amounts charged by the advisor for core investment advisory services.
Accordingly, the core investment advisory expenses do not vary by class.
Different fees and expenses will affect performance. For additional information
concerning the other classes of shares not offered by this Prospectus, call us
at 1-800-345-3533 or contact a sales representative or financial intermediary
who offers those classes of shares.

Except as described below, all classes of shares of a fund have identical
voting, dividend, liquidation and other rights, preferences, terms and
conditions. The only differences among the various classes are (a) each class
may be subject to different expenses specific to that class, (b) each class has
a different identifying designation or name, (c) each class has exclusive voting
rights with respect to matters solely affecting such class, (d) each class may
have different exchange privileges, and (e) the Institutional Class may provide
for automatic conversion from that class into shares of the Investor Class of
the same fund.




Financial Highlights

Understanding the Financial Highlights

This table itemizes what contributed to the changes in share price during the
period, and compares this to changes over the last five fiscal years (or less,
if the share class is not five years old).

On a per-share basis, it includes:

o   share price at the beginning of the period
o   investment income and capital gains or losses
o   distributions of income and capital gains paid to shareholders
o   share price at the end of the period

It also includes some key statistics for the period:

o   Total Return--the overall percentage of return of the fund, assuming the
    reinvestment of all distributions
o   Expense Ratio--operating expenses as a percentage of average net assets
o   Net Income Ratio--net investment income as a percentage of average net
    assets
o   Portfolio Turnover--the percentage of the fund's buying and selling activity

The Financial Highlights for the fiscal years ended October 31, 1997 and 1998
have been audited by Deloitte & Touche LLP, independent auditors. Their report
is in the funds' annual report, which is incorporated by reference into the
Statement of Additional Information, and is available upon request. Prior years'
information was audited by other independent auditors, whose report thereon also
is incorporated by reference into the Statement of Additional Information.





<TABLE>
<CAPTION>
Growth

                                                           1998          1997           1996          1995          1994
PER-SHARE DATA
<S>                                                  <C>             <C>            <C>           <C>          <C>
Net Asset Value, Beginning of Year.........
                                                       ------------- -------------- ------------- ------------- --------------
Income from Investment Operations
   Net Investment Income (dividends).......
   Net Realized and Unrealized Gain (Loss) on
   Investment Transactions.................
                                                       ------------- -------------- ------------- ------------- --------------
   Total From Investment Operations........
                                                       ------------- -------------- ------------- ------------- --------------
Less Distributions
   From Net Investment Income (dividends)..
                                                       ------------- -------------- ------------- ------------- --------------
                                                       ------------- -------------- ------------- ------------- --------------
Net Asset Value, End of Year...............
                                                       ------------- -------------- ------------- ------------- --------------
Total Return(1)............................

RATIOS/SUPPLEMENTAL DATA

Ratio of Operating Expenses to 
   Average Net Assets ..................... 
Ratio of Net Investment Income to 
   Average Net Assets ..................... 
Net Assets, End of Year (in thousands).....

(1) Total return assumes reinvestment of dividends and capital gains, if any.
</TABLE>







<TABLE>
<CAPTION>
Ultra
                                                           1998          1997           1996          1995          1994
PER-SHARE DATA
<S>                                                  <C>             <C>            <C>           <C>          <C>
Net Asset Value, Beginning of Year.........
                                                       ------------- -------------- ------------- ------------- --------------
Income from Investment Operations
   Net Investment Income (dividends).......
   Net Realized and Unrealized Gain (Loss) on
   Investment Transactions.................
                                                       ------------- -------------- ------------- ------------- --------------
   Total From Investment Operations........
                                                       ------------- -------------- ------------- ------------- --------------
Less Distributions
   From Net Investment Income (dividends)..
                                                       ------------- -------------- ------------- ------------- --------------
                                                       ------------- -------------- ------------- ------------- --------------
Net Asset Value, End of Year...............
                                                       ------------- -------------- ------------- ------------- --------------
Total Return(1)............................

RATIOS/SUPPLEMENTAL DATA
Ratio of Operating Expenses to 
   Average Net Assets ..................... 
Ratio of Net Investment Income to 
   Average Net Assets ..................... 
Net Assets, End of Year (in thousands).....

(1) Total return assumes reinvestment of dividends and capital gains, if any.
</TABLE>




<TABLE>
<CAPTION>
Select

                                                           1998          1997           1996          1995          1994
PER-SHARE DATA
<S>                                                  <C>             <C>            <C>           <C>          <C>
Net Asset Value, Beginning of Year.........
                                                       ------------- -------------- ------------- ------------- --------------
Income from Investment Operations
   Net Investment Income (dividends).......
   Net Realized and Unrealized Gain (Loss) on
   Investment Transactions.................
                                                       ------------- -------------- ------------- ------------- --------------
   Total From Investment Operations........
                                                       ------------- -------------- ------------- ------------- --------------
Less Distributions
   From Net Investment Income (dividends)..
                                                       ------------- -------------- ------------- ------------- --------------
                                                       ------------- -------------- ------------- ------------- --------------
Net Asset Value, End of Year...............
                                                       ------------- -------------- ------------- ------------- --------------
Total Return(1)............................

RATIOS/SUPPLEMENTAL DATA
Ratio of Operating Expenses to 
   Average Net Assets ..................... 
Ratio of Net Investment Income to 
   Average Net Assets ..................... 
Net Assets, End of Year (in thousands).....

(1) Total return assumes reinvestment of dividends and capital gains, if any.
</TABLE>




<TABLE>
<CAPTION>
Vista

                                                           1998          1997           1996          1995          1994
PER-SHARE DATA
<S>                                                  <C>             <C>            <C>           <C>          <C>
Net Asset Value, Beginning of Year.........
                                                       ------------- -------------- ------------- ------------- --------------
Income from Investment Operations
   Net Investment Income (dividends).......
   Net Realized and Unrealized Gain (Loss) on
   Investment Transactions.................
                                                       ------------- -------------- ------------- ------------- --------------
   Total From Investment Operations........
                                                       ------------- -------------- ------------- ------------- --------------
Less Distributions
   From Net Investment Income (dividends)..
                                                       ------------- -------------- ------------- ------------- --------------
                                                       ------------- -------------- ------------- ------------- --------------
Net Asset Value, End of Year...............
                                                       ------------- -------------- ------------- ------------- --------------
Total Return(1)............................

RATIOS/SUPPLEMENTAL DATA
Ratio of Operating Expenses to 
   Average Net Assets ..................... 
Ratio of Net Investment Income to 
   Average Net Assets ..................... 
Net Assets, End of Year (in thousands).....

(1) Total return assumes reinvestment of dividends and capital gains, if any.
</TABLE>




<TABLE>
<CAPTION>
Heritage

                                                           1998          1997           1996          1995          1994
PER-SHARE DATA
<S>                                                  <C>             <C>            <C>           <C>          <C>
Net Asset Value, Beginning of Year.........
                                                       ------------- -------------- ------------- ------------- --------------
Income from Investment Operations
   Net Investment Income (dividends).......
   Net Realized and Unrealized Gain (Loss) on
   Investment Transactions.................
                                                       ------------- -------------- ------------- ------------- --------------
   Total From Investment Operations........
                                                       ------------- -------------- ------------- ------------- --------------
Less Distributions
   From Net Investment Income (dividends)..
                                                       ------------- -------------- ------------- ------------- --------------
                                                       ------------- -------------- ------------- ------------- --------------
Net Asset Value, End of Year...............
                                                       ------------- -------------- ------------- ------------- --------------
Total Return(1)............................

RATIOS/SUPPLEMENTAL DATA
Ratio of Operating Expenses to 
   Average Net Assets ..................... 
Ratio of Net Investment Income to 
   Average Net Assets ..................... 
Net Assets, End of Year (in thousands).....

(1) Total return assumes reinvestment of dividends and capital gains, if any.
</TABLE>



At Your Service

Make virtually any transaction online

The next time you're surfing the Net, stop by American Century's Web site at
www.americancentury.com. Current shareholders can open new accounts by
exchanging shares (provided the account registration does not change). In
addition, you can view transactions and check your account balances. You can
also sign up to receive annual updates to your prospectuses and financial
reports via the Net instead of through the mail.

Expand your investment options with American Century Brokerage

If you're looking for a wide range of investment options - from trading
individual securities to purchasing mutual funds offered by hundreds of
companies - look to American Century Brokerage. With this new investment
service, you can take advantage of 24-hour trading on our Web site or TeleSelect
automated telephone service. Or, if you prefer, you can do business directly
with a Brokerage Associate.

With service features including a Gold MasterCard(R) ATM/Debit Card, unlimited
CheckWriting and cost basis reporting (all available with the American Century
Brokerage Access AccountSM), our brokerage service can simplify your life now
while you prepare financially for the years to come. For information about
opening a brokerage account, please call an American Century Brokerage Associate
at 1-888-345-2071.

Send your distributions straight to the bank

If you opt to have your dividend and capital gain distributions paid to you in
cash rather than reinvesting them into your account, consider an electronic
transfer to your bank account. It will save you time and a trip to the bank.
Call an Investor Services Representative for more information.

Check out our library

Are you looking for additional information on bond basics? Or, are you trying to
decide if municipal bonds have a place in your portfolio? Perhaps you would like
to test your knowledge of bonds and how they work. These are subjects covered in
our Financial FYI library that are available to you. Financial FYI, a growing
library of one-page resources, clearly and quickly explains various financial
subjects to help you make informed decisions. To request one of these articles,
call an Investor Services Representative.




More information about the funds is contained in these documents:

Annual and Semiannual Reports.  These reports contain more information about the
fund's  investments  and the market  conditions and investment  strategies  that
significantly  affected the fund's  performance during the most recent six-month
fiscal period.

Statement of Additional  Information.  The SAI contains a more  detailed,  legal
description  of the funds'  operations,  investment  restrictions,  policies and
practices. The SAI is incorporated by reference into this Prospectus. This means
that it is legally part of this Prospectus, even if you don't request a copy.

You also can get information about the funds (including the SAI) from the SEC.

v    In person.            SEC Public Reference Room
                           Washington, D.C.
                           Call 1-800-SEC-0330 for location and hours.

v    On the internet.      www.sec.gov.

v    By mail.              Public Reference Section
                           Washington, D.C.
                           20549-6009
                           The SEC will charge a fee for  copying the  documents
                           you request.


American Century Investments
P.O. Box 419200
Kansas City, Missouri 64141-6200

Investor Services
1-800-345-2021 or 816-531-5575

Automated Information Line
1-800-345-8765

Fax
816-340-7962

www.americancentury.com

Telecommunications Device for the Deaf
1-800-634-4113 or 816-444-3485

Corporate, Not-for-Profit, Keogh,
SEP-, SARSEP-, SIMPLE-IRA and 403(b) Services
1-800-345-3533

Investment Company Act File No. 811-0816
<PAGE>
[american century logo(reg.sm)]
American
Century

Prospectus

January 29, 1999
- --------------------------------------------------------------------------------

AMERICAN CENTURY

Limited-Term Bond
Intermediate-Term Bond
Bond

Investor Class

The  Securities and Exchange  Commission  has not approved or disapproved  these
securities or determined if this Prospectus is accurate or complete.  Anyone who
tells you otherwise is committing a crime.

Distributed by Funds Distributor, Inc.



Reading a prospectus doesn't have to be a chore. We've done the hard work so you
can focus on what's  important--learning about the funds. Take a look inside and
you'll see this  prospectus  is  different  from  others.  It takes a  clear-cut
approach to fund information.

Here's what you'll find:

o    The funds' primary investments and risks

o    A description of who may or may not want to invest in the funds

o    Fund performance,  including returns for each year, best and worst quarters
     and average annual returns compared to the funds' benchmarks

o    An overview of ways to best manage your accounts

o    Helpful tips and definitions of key investment terms

Whether  you're a current  investor or  investing  in mutual funds for the first
time, this prospectus will give you a clear  understanding  of the funds. If you
have questions,  our Investor Services Representatives are available weekdays, 7
a.m. to 7 p.m.  Central time. Our toll-free  number is  1-800-345-2021.  We look
forward to helping you achieve your financial goals.

                                      Sincerely,


                                      Mark Killen
                                      Senior Vice President
                                      American Century Investment Services, Inc.




Table of Contents

An Overview of the Funds...............................................2

Fees and Expenses......................................................3

Detailed Information about the Funds...................................4

         Limited-Term Bond
         Intermediate-Term Bond
         Bond

Basics of Fixed Income Investing......................................12

Management............................................................15

Investing with American Century.......................................18

Share Price and Distributions.........................................21

Taxes.................................................................22

Multiple Class Information............................................22

Financial Highlights..................................................23

At Your Service.......................................................22

Fund Reference
                             Fund Code      Ticker          Newspaper Listing
- --------------------------------------------------------------------------------
Limited-Term Bond            033            N/A             LtdBnd
Intermediate-Term Bond       034            TWITX           IntTrBd
Bond                         027            TWLBX           Bond
- --------------------------------------------------------------------------------

**********LEFT MARGIN CALLOUTS

Throughout  this  book  you'll  find  definitions  to key  investment  terms and
phrases.  When you see a word printed in green italics,  look for its definition
in the left margin.

*........This symbol highlights special information and helpful tips.

**********END LEFT MARGIN CALLOUTS




An Overview of the Funds

What are the funds' investment goals?

These funds seek  income  from  investments  in  corporate  bonds and other debt
obligations.

What are the funds' primary investments and risks?

The funds  invest  most of their  assets in quality  debt  securities  issued by
corporations.  The chart below shows the  primary  differences  among the funds.
Additional  important  information  about the funds'  investment  strategies and
risks begins on page 4.

<TABLE>
Fund                     Primary Investments                          Primary Risks
- ------------------------ -------------------------------------------- ------------------------
<S>                     <C>                                          <C>
Limited-Term Bond        Quality short-term debt securities           Liquidity risk
                                                                      Some credit risk
                                                                      Some interest rate risk
Intermediate-Term Bond   Quality intermediate-term debt securities    Liquidity risk
                                                                      Some credit risk
                                                                      Interest rate risk
Bond                     Quality intermediate- and longer-term debt   Liquidity risk
                         securities                                   Some credit risk
                                                                      High interest rate risk
- ------------------------ -------------------------------------------- ------------------------
</TABLE>

**********LEFT MARGIN CALLOUT

Debt  securities  means bonds,  notes and  debentures.  Debt securities also are
sometimes called fixed income securities.

**********END LEFT MARGIN CALLOUT

Who may want to invest in the funds?

The funds may be a good investment if you are

0    seeking current income

0    comfortable with the funds' other investment risks

Who may not want to invest in the funds?

The funds may not be a good investment if you are

0    investing for long-term growth

0    looking for the added security of FDIC insurance

**********LEFT MARGIN CALLOUTS

An  investment  in the  funds  is  not a bank  deposit  and  is not  insured  or
guaranteed by the Federal Deposit Insurance  Corporation or any other government
agency.


**********END LEFT MARGIN CALLOUTS








Fees and Expenses

There are no sales loads or fees or other charges

0    to buy fund shares directly from American Century

0    to reinvest dividends in additional shares

0    to exchange into the Investor Class shares of other American Century funds

The following  tables describe the fees and expenses that you may pay if you buy
and hold shares of the funds.

<TABLE>
<CAPTION>
Annual Operating Expenses (expenses that are deducted from fund assets)
                             Management Fee      Distribution and          Other       Total Annual Fund Operating
                                                 Service (12b-1) Fees      Expenses1   Expenses
- ---------------------------- ------------------- ------------------------- ----------- ------------------------------
<S>                          <C>                                           <C>         <C>  
Limited-Term Bond            0.70%               None                      0.00%       0.70%
- ---------------------------- ------------------- ------------------------- ----------- ------------------------------
Intermediate-Term Bond       0.75%               None                      0.00%       0.75%
- ---------------------------- ------------------- ------------------------- ----------- ------------------------------
Bond                         0.80%               None                      0.00%       0.80%
</TABLE>

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

Examples of Hypothetical Fund Costs

The  examples in the table  below are  intended to help you compare the costs of
investing in a fund with those of other mutual funds. Assuming you ...

o        invest $10,000 in the fund

o        redeem all of your shares at the end of the periods shown below

o        earn a 5% return each year and

o        incur the same operating expenses shown above,

 ... your cost of investing in the fund would be:

                             1 Year     3 Years    5 Years    10 Years
- ---------------------------- ---------- ---------- ---------- -----------
Limited-Term Bond            $71        $224       $389       $868
- ---------------------------- ---------- ---------- ---------- -----------
Intermediate-Term Bond       $76        $239       $416       $928
- ---------------------------- ---------- ---------- ---------- -----------
Bond                         $82        $255       $443       $987

**********LEFT MARGIN CALLOUTS

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

**********END LEFT MARGIN CALLOUTS







Detailed Information About the Funds

Limited-Term Bond
Intermediate-Term Bond
Bond

What are the funds' investment objectives?

These funds seek  income  from  investments  in  corporate  bonds and other debt
obligations.

How do the funds implement their investment objectives?

The funds invest most of their assets in quality  debt  securities  of differing
maturities.  However,  up to  15% of  the  funds'  assets  may  be  invested  in
securities rated in the fifth highest category by an independent ratings agency,
or determined to be of comparable quality by the advisor.  Corporations  usually
issue  these  securities  to  finance  existing  operations  or to expand  their
business. The remainder will be invested in short-term money market instruments.
For more information  about the funds' credit quality standards and about credit
risk, please see "BASICS OF FIXED INCOME INVESTING" beginning on page XX.

**********LEFT MARGIN CALLOUTS

A quality debt security is one that has been determined to be investment  grade.
This can be  established in a number of ways.  For example,  independent  rating
agencies  may rate the security in one of their four higher  rating  categories.
The funds'  advisor  also can analyze an unrated  security to  determine  if its
credit quality is high enough for investment.

**********END LEFT MARGIN CALLOUTS

What is the difference between the three funds?

The funds  differ in the maturity of the debt  securities  they  purchase.  This
difference is shown on the chart below.

                            Expected Weighted Average
                            Maturity Range
- --------------------------------------------------------
Limited-Term Bond           1-5 years
Intermediate-Term Bond      3-10 years
Bond                        8-20 years

What are the primary risks of investing in the funds?

The funds have different weighted average maturities. Because of this, the funds
will  respond  differently  to  changes in  interest  rates.  Funds with  longer
weighted  average  maturities are more sensitive to interest rate changes.  When
interest  rates rise,  the values of the funds usually  fall,  but the values of
funds with longer weighted average maturities generally will fall farther.

The funds' share values will fluctuate.  In general,  the funds that have higher
potential  income  have a higher  potential  loss.  If you sell your shares when
their value is less than the price you paid, you will lose money.

                                Potential Income   Potential Loss
- ----------------------------------------------------------------------
Limited-Term Bond               Lower              Lower
Intermediate-Term Bond          Moderate           Moderate
Bond                            Higher             Higher

Although  most  of the  securities  purchased  by the  funds  are  quality  debt
securities at the time of purchase, the funds may invest part of their assets in
securities rated in the lowest  investment grade category (e.g.,  BBB) and up to
15% of their assets in securities  rated in the fifth category (e.g.,  BB). As a
result, the funds have some credit risk. Although they are considered investment
grade,  issuers of BBB rated  securities (and securities of similar quality) are
more likely to have problems making interest and principal payments than issuers
of higher-rated  securities.  Issuers of BB rated  securities (and securities of
similar  quality) are  considered  to force major  uncertainties  or exposure to
adverse  business,   financial  or  economic   conditions  that  could  lead  to
difficulties in making timely payments of principal and interest.







Fund Performance History

The performance  information on this page is designed to help you understand how
fund returns can vary. Keep in mind that past  performance  does not predict how
the funds will perform in the future.

Annual Total Returns

The  following  bar chart shows the  performance  of the funds'  Investor  Class
shares for each of the last 10 calendar years (or for each full year in the life
of the fund if less than 10 years).  It indicates  the  volatility of the funds'
historical returns from year to year.

[GRAPH  DEPICTING  10  YEAR  ANNUAL  TOTAL  RETURNS  (OR  SINCE  INCEPTION)  FOR
LIMITED-TERM  BOND,   INTERMEDIATE-TERM  BOND  AND  BOND;  UPDATED  FIGURES  NOT
AVAILABLE]

Highest and Lowest Quarterly Returns
The highest and lowest returns of the funds' Investor Class shares for a quarter
during  the last 10  calendar  years  (or the  life of the fund if less  than 10
years)  are  provided  below  to  indicate  the  funds'  historical   short-term
volatility.

[GRAPH  DEPICTING  HIGHEST AND LOWEST QUARTERLY  RETURNS FOR LIMITED-TERM  BOND,
INTERMEDIATE-TERM BOND AND BOND; UPDATED FIGURES NOT AVAILABLE]

Average Annual Returns

The  following  table shows the average  annual  returns of the funds'  Investor
Class Shares for the periods  indicated  during the last 10 calendar years.  The
benchmarks are included for long-term performance comparison. The benchmarks are
unmanaged indices that have no operating costs.

<TABLE>
<CAPTION>
                                                        1 year         5 years        10 years       Life of Fund*
- --------------------------------------------------------------------------------------------------------------------
<S>                                                     <C>            <C>            <C>            <C>  
Limited-Term Bond                                       3.17%          N/A            N/A            3.33%
Merrill Lynch 1- to 5-year Govt./Corp. Index            X.XX%          X.XX%          X.XX%          X.XX%
- --------------------------------------------------------------------------------------------------------------------
Intermediate-Term Bond                                  3.17%          N/A            N/A            3.33%
Lehman Intermediate Govt./Corp. Index                   X.XX%          X.XX%          X.XX%          X.XX%
- --------------------------------------------------------------------------------------------------------------------
Bond                                                    3.17%          3.12%          3.31%          3.33%
Lehman Aggregate Bond Index                             X.XX%          X.XX%          X.XX%          X.XX%
</TABLE>

*    The   inception   dates  for  the   funds   are:   Limited-Term   Bond  and
     Intermediate-Term Bond, March 1, 1994; Bond, March 2, 1987.

**********LEFT MARGIN CALLOUTS

The funds' total  returns for the period from January 1, 1998,  to September 30,
1998, are

Limited-Term Bond               X.XX%
Intermediate-Term Bond          X.XX%
Bond                            X.XX%

*    For current performance  information,  including yields,  please call us at
     1-800-345-2021    or    visit    American    Century's    Web    site    at
     www.americancentury.com

**********END LEFT MARGIN CALLOUTS






Basics of Fixed Income Investing

Debt Securities

When a fund buys a debt security,  which is also called a fixed income security,
it is  essentially  lending money to the issuer of the security.  Notes,  bonds,
commercial paper and Treasury bills are examples of debt  securities.  After the
issuer  first  sells  the  debt  security,  it may be  bought  and sold by other
investors.  The price of the  security  may rise or fall based on many  factors,
including changes in interest rates, inflation and liquidity.

The fund managers decide which debt securities to buy and sell by

0    determining which securities help a fund meet its maturity requirements

0    identifying securities that satisfy a fund's credit quality requirements

0    evaluating  the  current  economic  conditions  and  assessing  the risk of
     inflation

0    evaluating  special  features of the securities  that may make them more or
     less attractive

Weighted Average Maturity

Like most loans,  debt  securities  eventually must be repaid (or refinanced) at
some date.  This date is called the maturity  date. The number of days left to a
debt  security's  maturity date is called the remaining  maturity.  The longer a
debt  security's  remaining  maturity,  the more  sensitive  it is to changes in
interest rates.

Because a bond fund will own many debt  securities,  the advisor  calculates the
average of the remaining  maturities of all of the debt securities the fund owns
to evaluate the interest rate sensitivity of the entire portfolio.  This average
is  weighted  according  to the size of the fund's  individual  holdings  and is
called weighted average maturity. The following chart shows how an advisor would
calculate  the  weighted  average  maturity  for a fund that owned only two debt
securities.

<TABLE>
                       Amount of Security Owned       Percent of Portfolio   Remaining Maturity      Weighted Maturity
- ---------------------- ------------------------------ ---------------------- ----------------------- ----------------------
<S>                    <C>                            <C>                    <C>                     <C>     
Debt Security A        $100,000                       25%                    1,000 days              250 days
Debt Security B        $300,000                       75%                    10,000 days             7500 days
Weighted Average Maturity                                                                            7750 days
</TABLE>

Types of Risk

The basic types of risk that the funds face are described below.

Interest Rate Risk

Generally,  interest  rates and the prices of debt  securities  move in opposite
directions.  So when  interest  rates fall,  the prices of most debt  securities
rise; when interest rates rise, prices fall.  Because the funds invest primarily
in  debt   securities,   changes  in  interest  rates  will  affect  the  funds'
performance.

The degree to which interest rate changes affect the funds'  performance  varies
and is related to the weighted average  maturity of the fund. For example,  when
interest  rates rise, you can expect the share value of a long-term bond fund to
fall more than that of a short-term  bond fund. When rates fall, the opposite is
true. This sensitivity to interest rate changes is called interest rate risk.

***********LEFT MARGIN CALLOUTS

*    Weighted  average  maturity is a tool that the advisor uses to  approximate
     the remaining maturity of a fund's investment portfolio.

*    The longer a fund's weighted average maturity,  the more sensitive it is to
     changes in interest rates.

***********END LEFT MARGIN CALLOUTS






The following  table shows the effect of a 1% increase in interest  rates on the
price of 7% coupon bonds of differing maturities:

Remaining Maturity       Current Price     Price after 1%       Change in price
                              increase
- ------------------- ------------------ ------------------- ---------------------
1 year                        $100.00              $99.06                -0.94%
3 years                        100.00               97.38                -2.62%
10 years                       100.00               93.20                -6.80%
30 years                       100.00               88.69               -11.31%

Credit Risk

Credit risk is the risk that an obligation won't be paid and a loss will result.
A high  credit  rating  indicates  a high  degree of  confidence  by the ratings
organization  that  the  issuer  will  be able to  withstand  adverse  business,
financial or economic  conditions  and be able to make  interest  and  principal
payments on time.  Generally,  a lower credit rating indicates a greater risk of
nonpayment.  A lower rating may also  indicate that the issuer has a more senior
series of debt  securities,  which  means that if the  issuer  has  difficulties
making  its  payments,  the  more  senior  series  of debt is  first in line for
payment.

It's not as simple as buying the highest rated debt securities,  though.  Higher
credit ratings  usually mean lower interest  rates,  so investors often purchase
securities that aren't the highest-rated to increase return. If a fund purchases
lower-rated securities, it assumes additional credit risk.

The following  chart shows the  authorized  credit  quality ranges for the funds
offered by this Prospectus.

<TABLE>
- -------------------------------------------------- -----------------------------------------------------------------------
                INVESTMENT GRADE                                            NON-INVESTMENT GRADE
- -------------------------------------------------- -----------------------------------------------------------------------
<S>                     <C>                     <C>      <C>          <C>       <C>            <C>        <C>          <C>
                      A-1                     A-2      A-3
                      P-1                     P-2      P-3
                    MIG-1                   MIG-2    MIG-3
                     SP-1                    SP-2     SP-3
          AAA          AA           A         BBB       BB             B         CCC          CC           C           D
- -------------------------------------------------- -----------------------------------------------------------------------
Limited-Term Bond
- --------------------------------------------------------------
Intermediate-Term Bond
- --------------------------------------------------------------
Bond
- -------------------------------------------------- ----------- ----------- ----------- ----------- ----------- -----------
</TABLE>

Securities  rated  in  one  of  the  highest  four  categories  by a  nationally
recognized  securities rating  organization (e.g., Moody's or Standard & Poor's)
are  considered  "investment  grade."  Although they are  considered  investment
grade, an investment in these securities still involves some credit risk since a
AAA rating is not a guarantee  of  payment.  For a complete  description  of the
ratings  system,  see  "EXPLANATION OF FIXED INCOME  SECURITIES  RATINGS" in the
Statement of Additional Information.

Liquidity Risk

Debt securities can become  difficult to sell for a variety of reasons,  such as
lack of an active trading market.  When a fund's investments become difficult to
sell, it is said to have a problem with  liquidity.  The chance that a fund will
have liquidity issues is called liquidity risk.

Inflation Risk

The safest investments usually have the lowest potential income and performance.
There  is  a  risk,   then,  that  returns  from  the  investment  may  fail  to
significantly  outpace  inflation.  Even if the value of your investment has not
gone  down,  your  money  will  not be  worth  as much as if  there  had been no
inflation.  Your after-inflation  return may be quite small. This risk is called
inflation risk.

**********LEFT MARGIN CALLOUTS

*    Credit quality may be lower when the issuer has
o        a high debt level
o        a short operating history
o        a senior level of debt
o        a difficult competitive environment

*    The Statement of Additional  Information provides a detailed description of
     these securities ratings.

**********END LEFT MARGIN CALLOUTS






A Comparison of Basic Risk Factors

The  following  chart  depicts the basic risks of investing in the funds.  It is
designed to help you compare  these funds with each other;  it shouldn't be used
to compare these funds with other mutual funds.

<TABLE>
                               Interest Rate Risk   Credit Risk    Liquidity Risk   Inflation Risk
- ------------------------------ -------------------- -------------- ---------------- -----------------
<S>                            <C>                 <C>             <C>             <C>
Limited-Term Bond              Low                  Similar        Similar          High
Intermediate-Term Bond         Medium               Similar        Similar          Medium
Bond                           High                 Similar        Similar          Low
</TABLE>

The funds  engage in a variety of  investment  techniques  as they pursue  their
investment objectives. Each technique has its own characteristics,  and may pose
some  level of risk to the funds.  If you would  like to learn more about  these
techniques,  you should review the Statement of  Additional  Information  before
making an investment.








Management

Who manages the funds?

The Board of Directors,  investment  advisor and fund  management  team play key
roles in the management of the funds.

The Board of Directors

The Board of Directors  oversees the  management of the funds and meets at least
quarterly  to  review  reports  about  fund  operations.  Although  the Board of
Directors  does not manage the funds,  it has hired an investment  advisor to do
so. More than half of the directors are independent of the funds' advisor,  that
is, they are not employed by and have no financial interest in the advisor.

The Investment Advisor

The funds' investment  advisor is American Century Investment  Management,  Inc.
The advisor has been  managing  mutual  funds  since 1958.  American  Century is
headquartered at 4500 Main Street, Kansas City, Missouri 64111.

The advisor is responsible  for managing the investment  portfolios of the funds
and directing the purchase and sale of their investment securities.  The advisor
also arranges for transfer agency,  custody and all other services necessary for
the funds to operate.

For the services it provided to the funds during their most recent  fiscal year,
the  advisor  received a unified  management  fee based on a  percentage  of the
average  net  assets  of  each  fund.  The of the  management  fee for a fund is
calculated  daily  and paid  monthly.  Out of that  fee,  the  advisor  paid all
expenses of managing and operating the fund except  brokerage  expenses,  taxes,
interest,  fees and  expenses  of the  independent  directors  (including  legal
counsel fees) and extraordinary expenses.

Fees Paid by the Funds to the Advisor for the Most Recent Fiscal Year Ended
October 31, 1998
- ------------------------------------------------------------------------------
- ------------------------------------------------------------------ -----------
Limited-Term Bond                                                     0.70%
Intermediate-Term Bond                                                0.75%
Bond                                                                  0.80%






The Fund Management Team

The advisor uses teams of portfolio  managers,  assistant portfolio managers and
analysts to manage the funds.  Teams meet regularly to review portfolio holdings
and to discuss purchase and sale activity.  Team members buy and sell securities
for a fund as they  see fit,  guided  by the  fund's  investment  objective  and
strategy.

Portfolio Manager members of the investment team are identified below:

Norman E. Hoops
Mr. Hoops, Senior Vice President and Portfolio Manager, has been a member of the
team that manages the funds since the fund's  inception in March 1994. He joined
American  Century as Vice  President and Portfolio  Manager in November 1989. In
April  1993,  he became  Senior Vice  President.  He has a bachelor of arts from
Indiana University and an MBA from Butler University.

Jeffrey L. Houston
Mr. Houston,  Portfolio Manager,  has been a member of the team that manages the
funds since June 1995. He joined  American  Century as an Investment  Analyst in
1990 and was  promoted to Portfolio  Manager in 1994.  He has a bachelor of arts
from the  University  of Delaware and an MPA from Syracuse  University.  He is a
Chartered Financial Analyst.




**********LEFT MARGIN CALLOUTS

*    Code of Ethics

     American Century has a Code of Ethics designed to ensure that the interests
     of fund shareholders come before the interests of the people who manage the
     funds.  Among  other  provisions,  the Code of Ethics  prohibits  portfolio
     managers  and other  investment  personnel  from  buying  securities  in an
     initial public offering or from profiting from the purchase and sale of the
     same  security  within 60 calendar  days.  In addition,  the Code of Ethics
     requires  portfolio managers and other employees with access to information
     about the purchase or sale of  securities  by the funds to obtain  approval
     before executing permitted personal trades.

**********END LEFT MARGIN CALLOUTS






Fundamental Investment Policies

Fundamental  investment  policies  contained  in  the  Statement  of  Additional
Information  and the  investment  objectives  of the  funds  may not be  changed
without a shareholder  vote. The Board of Trustees may change any other policies
and investment strategies.

Year 2000 Issues

Many of the world's  computer  systems  currently  cannot properly  recognize or
process date-sensitive information relating to the Year 2000 and beyond. Because
this may impact the computer systems of various American  Century-affiliated and
external service providers for the funds,  American Century formally initiated a
Year 2000  readiness  project in July 1997.  It  involves a team of  information
technology  professionals  assisted  by  outside  consultants  and  guided  by a
senior-level steering committee.  The team's goal is to assess the impact of the
Year 2000 on  American  Century's  systems,  renovate  or  replace  noncompliant
critical systems and test those systems. In addition,  the team has been working
to gather  information  about the Year 2000  efforts of the funds'  other  major
service providers.  Although American Century believes its critical systems will
function  properly in the Year 2000, this is not  guaranteed.  If the efforts of
American  Century or its external  service  providers  are not  successful,  the
funds'  business,  particularly  the provision of shareholder  services,  may be
hampered.

In  addition,  the  issuers  of  securities  the funds own could  have Year 2000
computer  problems.  These problems could  negatively  affect the value of their
securities, which, in turn, could impact the funds' performance. The advisor has
established a process to gather publicly  available  information  about the Year
2000  readiness  of these  issuers.  However,  this  process may not uncover all
relevant  information,  and the  information  gathered  may not be complete  and
accurate.  Moreover, an issuer's Year 2000 readiness is only one of many factors
the fund  managers  may consider  when making  investment  decisions,  and other
factors may receive greater weight.






How to Invest in American Century

Services Automatically Available to You

You  automatically  will have access to the services  listed below when you open
your account.  If you do not want these services,  see  "Conducting  Business in
Writing" below.

Conducting Business in Writing

If you prefer to conduct  business in writing only, you can indicate this on the
account  application.  If you choose to do  business in writing  only,  you must
provide written instructions to invest,  exchange and redeem. All account owners
must sign transaction  instructions (with signatures  guaranteed for redemptions
in excess of $100,000).  If you want to add services later,  you can complete an
Investor Service Options form.

<TABLE>
Ways to Manage Your Account
- -------------------------------------------------------------------------------------------------------------------------------
- ---------------------------------- ---------------------------------------------- -----------------------------------------------
<S>                                <C>                                            <C>
By telephone                       Open an account                                Make additional investments
Investor Services                  If you are a current investor, you             Call us or use our Automated Information Line
1-800-345-2021                     can open an account by exchanging              if you have authorized us to invest from your
7 a.m. to 7 p.m. Central time      shares from another American Century           bank account.
                                   account. (This service is not
Automated Information Line         available if you have chosen to do             Sell shares
1-800-345-8765                     business in writing only.)                     Call an Investor Services Representative.
24 hours a day
seven days a week                  Exchange shares
                                   Call us or use our Automated Information Line
                                   if you have authorized us to accept telephone
                                   instructions.
- ---------------------------------- ---------------------------------------------- -----------------------------------------------
- ---------------------------------- ---------------------------------------------- -----------------------------------------------
By mail or fax                     Open an account                                Make additional investments 
PO Box 419200                      Send a signed and completed                    Send us your check or money order for at 
Kansas City, MO 64141-6200         application and check or money order           least $50 with an investment slip or $250
                                   payable to American Century                    without an investment slip. If you don't have
Fax 816-340-7962                   Investments.                                   an investment slip, include your name,
                                                                                  address and account number on your check or
                                   Exchange shares                                money order.
                                   Send us written instructions to
                                   exchange your shares from one                  Sell shares
                                   American Century account to another.           Send us written instructions to sell shares
                                                                                  or send us a redemption form. Call an
                                                                                  Investor Services Representative to request a
                                                                                  form.
- ---------------------------------- ---------------------------------------------- -----------------------------------------------
- ---------------------------------- ---------------------------------------------- -----------------------------------------------
Online                             Open an account                                Make additional investments
www.americancentury.com            If you are a current investor, you             Follow the instructions online if you have
                                   can open an account by exchanging              authorized us to invest from your bank
                                   shares from another American Century           account.
                                   account online. (This service is not
                                   available if you have chosen to do             Sell shares
                                   business in writing only.)                     Not available.

                                   Exchange shares
                                   Exchange shares from another American Century
                                   account.





A Note About Mailings to Shareholders

To reduce expenses and demonstrate respect for our environment, we will deliver
most financial reports, prospectuses and account statements to households in a
single envelope, even if the accounts are registered under different names. If
you would like additional copies of financial reports and prospectuses or
separate mailing of account statements, please call us.

Your Guide to Services and Policies

When you open an account, you will receive an Investor Services Guide, which
explains the services available to you and the policies of the fund and the
transfer agent.

- ---------------------------------------------------------------------------------------------------------------------------------
- -------------------------------- ----------------------------------------------   -----------------------------------------------
By wire                          Open an account                                  Make additional investments
                                 Call us to set up your account or mail           Follow the wire instructions provided in the
                                 a completed application to the address           "Open an account" section
                                 provided in the "By Mail" section and
                                 give your bank:                                  Sell shares
                                 o  Our bank information:                         You can receive redemption proceeds by
*    Please remember that           -     Commerce Bank N.A.                      wire  or electronic transfer.  (This
     if you request                 -     Routing No. 101000019                   service is not available if you have
     redemptions by wire, $10       -     ACMF Account No. 2804918                chosen to do business in writing only.)
     will be deducted from the   o        The fund name
     amount wired. Your bank     o        Your American Century account number
     also may charge a fee.      o        Your name
                                 o        The contribution year (for IRAs only)   Exchange shares
                                                                                  Not available.

- -------------------------------- ------------------------------------------------ -----------------------------------------------
- -------------------------------- ------------------------------------------------ -----------------------------------------------
Automatically                    Open an account                                  Make additional investments
                                 Not available.                                   Select "Establish Automatic Investments" on
                                                                                  your application to make automatic purchases
                                 Sell shares                                      of shares on a regular basis. You must invest
                                 If you have at least $10,000 in your             at least $600 per year per account.
                                 account, sell shares automatically by
                                 establishing Check-A-Month or Automatic          Exchange shares
                                 Redemption.                                      Send us written instructions to set up an
                                                                                  automatic exchange of your shares from one
                                                                                  American Century account to another.

- -------------------------------- ------------------------------------------------ -----------------------------------------------
- -------------------------------- ------------------------------------------------------------------------------------------------
In person                        If you prefer to handle your
                                 transactions in person, visit one of our
                                 Investor Centers and a representative can help
                                 you open an account, make additional
                                 investments, sell or exchange shares. Here are
                                 the Investor Centers you can visit

                                 4500 Main Street                        4917 Town Center Dr.
                                 Kansas City, Missouri                   Leawood, Kansas

                                 1665 Charleston Road                    2000 S. Colorado Blvd.
                                 Mountain View, California               Denver, Colorado
</TABLE>






Minimum Initial Investment Amounts

To open an account the minimum investments are as follows for:
- --------------------------------------------------------------------------------
Individual or Joint                                               $5,000
Traditional IRA                                                   $1,000
Roth IRA                                                          $1,000
Education IRA                                                       $500
UGMA/UTMA                                                         $1,000
403(b)                                                        No minimum

Redemption of shares in low-balance accounts

If your account falls below the minimum  balance we will notify you and give you
90 days to meet the minimum or, for most types of equity accounts,  to establish
an  automatic  monthly  investment.  If you do not meet the  deadline,  American
Century  will  redeem the shares in the  account  and send the  proceeds to your
address of record.

Investing Through Financial Intermediaries

If you do business  with us through a  financial  intermediary  or a  retirement
plan,  your ability to purchase,  exchange and redeem  shares will depend on the
policies of that entity. Some policy differences may include

o        minimum investment requirements
o        exchange policies
o        fund choices
o        cut-off time for investments

Please  contact  your  financial  intermediary  or plan  sponsor  for a complete
description  of its policies.  Copies of the funds' annual  reports,  semiannual
reports  and  Statements  of  Additional  Information  are  available  from your
intermediary or plan sponsor.

Certain  financial   intermediaries  perform  recordkeeping  and  administrative
services  for their  clients  that would  otherwise  be  performed  by  American
Century's transfer agent. In some  circumstances,  American Century will pay the
service provider a fee for performing those services.

Although  transactions in fund shares may be made directly with American Century
at no charge,  you also may purchase,  redeem and exchange  fund shares  through
financial  intermediaries that charge a transaction-based or other fee for their
services. Those charges are retained by the intermediary and are not shared with
American Century or the funds.

American Century has contracts with certain  financial  intermediaries  in which
they represent that they will track the time investment orders are received. The
funds have  authorized  those  intermediaries  to accept  orders on each  fund's
behalf up to the time net asset value is determined.  Such orders will be priced
at the net asset value next determined after acceptance of the order on a fund's
behalf.

**********LEFT MARGIN CALLOUTS

* Financial  intermediaries include banks,  broker-dealers,  insurance companies
and investment advisors.

**********END LEFT MARGIN CALLOUTS






Share Price and Distributions

Share Price

We determine the net asset value of the funds as of the close of regular trading
on the New York Stock  Exchange  (usually 4 p.m.  Eastern  time) on each day the
Exchange is open. On days when the Exchange is not open, we do not calculate the
net asset value. The net asset value of a fund share is the current value of its
investments,  minus  any  liabilities,  divided  by the  number  of fund  shares
outstanding.

If current prices of securities  owned by a fund are not readily  available from
an independent  pricing  service,  the advisor may determine their fair value in
accordance with procedures  adopted by the fund's Board of Trustees.  Trading of
securities  in foreign  markets may not take place on every day the  Exchange is
open.  Also,  trading in some  foreign  markets  may take place on  weekends  or
holidays  when a fund's net asset  value is not  calculated.  So, the value of a
fund's  portfolio  may be  affected  on days when you can't  purchase  or redeem
shares of the fund.

We will price your purchase,  exchange or redemption at the net asset value next
determined after we receive your transaction request in good order.

Distributions

Federal tax laws require each fund to make  distributions to its shareholders in
order  to  qualify  as a  "regulated  investment  company."  Qualification  as a
regulated  investment  company means that the funds will not be subject to state
or federal  income  tax on  amounts  distributed.  The  distributions  generally
consist of dividends and interest received, as well as capital gains realized on
the sale of investment securities.  Each fund pays distributions from net income
monthly. Each fund generally pays distributions of capital gains, if any, once a
year in December.  A fund may make more frequent  distributions  if necessary to
comply with Internal Revenue Code provisions.

You will begin to participate in fund  distributions the day after your purchase
is effective.  If you redeem shares, you will receive the distribution  declared
for  the day  you  redeem.  If you  redeem  all  shares,  we  will  include  the
distribution on the redeemed with your redemption proceeds.

Participants in employer-sponsored retirement or savings plans must reinvest all
distributions.  For shareholders  investing  through taxable  accounts,  we will
reinvest  distributions unless you elect to receive them in cash. Please consult
our Investor Services Guide for further information regarding  distributions and
your distribution options.

**********LEFT MARGIN CALLOUTS

The net asset value of a fund is the price of the fund's shares.

Capital gains is the increase in value of a capital asset,  such as stock,  from
the time it is  purchased.  Tax becomes  due on capital  gains once the asset is
sold.

**********END LEFT MARGIN CALLOUTS






Taxes

The tax  consequences  of  owning  shares of the funds  will vary  depending  on
whether you own them through a taxable or tax-deferred account. Tax consequences
result from  distributions  by the funds of dividend and interest  income it has
received and capital gains it has generated  through its investment  activities,
and by sales of fund shares by investors after the net asset value has increased
or decreased.

Tax-Deferred Accounts

If you purchase fund shares through a tax-deferred  account, such as an IRA or a
qualified  employer-sponsored  retirement  or savings  plan,  income and capital
gains  distributions  usually will not be subject to current taxation,  but will
accumulate in your account  under the plan on a  tax-deferred  basis.  Likewise,
moving  from one fund to  another  fund  within a plan or  tax-deferred  account
generally  will  not  cause  you to be  taxed.  For  information  about  the tax
consequences of making  purchases or withdrawals  through an employer  sponsored
retirement  or  savings  plan,  or  through  an IRA,  please  consult  your plan
administrator, your summary plan description or a professional tax advisor.

Taxable Accounts

If you own fund shares through a taxable account,  distributions by the fund and
sales by you of fund shares may cause you to be taxed.

Taxability of Distributions

Fund distributions may consist of income earned by the fund from sources such as
dividends  and  interest,  or  capital  gains  generated  from  the sale of fund
investments.  Distributions of income are taxed as ordinary income. Distribution
of capital gains are classified  either as short-term or long-term and are taxed
as follows:


<TABLE>
Type of distribution               Tax rate for 15% bracket          Tax rate for 28% bracket or above
- ----------------------------- ------------------------------------ ---------------------------------------
<S>                                           <C>                                   <C>
Short-term capital gains             Ordinary income rate                   Ordinary income rate
Long-term capital gains                       10%                                   20%
</TABLE>

The tax status of any  distribution  of capital  gains is determined by how long
the fund held the  underlying  security that was sold,  not by how long you have
been  invested  in the  fund or  whether  you  reinvest  your  distributions  in
additional  shares or take them as income.  American Century will detail the tax
status of fund  distributions  for each calendar year in an annual tax statement
from the fund.

Distributions may also be subject to state and local taxes.  Because  everyone's
tax situation is unique,  always  consult your tax  professional  about federal,
state and local tax consequences.

Taxes on transactions

Your  redemptions -- including  exchanges to other American Century funds -- are
subject to capital  gains tax.  The table above can provide a general  guide for
your potential tax liability when selling or exchanging fund shares. "Short-term
capital  gains" are gains on fund shares held for 12 months or less.  "Long-term
capital  gains" are gains on fund shares  held for more than 12 months.  If your
shares  decrease in value,  their sale or exchange will result in a long-term or
short-term capital loss.

**********LEFT MARGIN CALLOUTS

*    Buying a Dividend

     Purchasing  fund shares in a taxable  account shortly before a distribution
     is sometimes  known as "buying a dividend." In taxable  accounts,  you must
     pay income taxes on the  distribution  whether you take the distribution in
     cash or  reinvest  it.  In  addition,  you  will  have to pay  taxes on the
     distribution whether the value of your investment  decreased,  increased or
     remained  the same after you bought the fund  shares.  The risk in buying a
     dividend is that a fund's  portfolio may build up taxable gains  throughout
     the period covered by a  distribution,  as securities are sold at a profit.
     We distribute those gains to you, after subtracting any losses, even if you
     did not own the shares when the gains occurred. Thus if you buy a dividend,
     you incur the full tax liability of the  distribution  period,  but you may
     not enjoy the full benefit of the gains realized in the fund's portfolio.

**********END LEFT MARGIN CALLOUTS







Financial Highlights

Understanding the Financial Highlights

This table  itemizes what  contributed  to the changes in share price during the
period,  and compares  this to changes over the last five fiscal years (or less,
if the share class is not five years old).

On a per-share basis, it includes:

o        share price at the beginning of the period
o        investment income and capital gains or losses
o        distributions of income and capital gains paid to shareholders
o        share price at the end of the period

It also includes some key statistics for the period:

o    Total Return--the  overall  percentage of return of the fund,  assuming the
     reinvestment of all distributions

o    Expense Ratio--operating expenses as a percentage of average net assets

o    Net Income  Ratio--net  investment  income as a  percentage  of average net
     assets

o    Portfolio  Turnover--the  percentage  of  the  fund's  buying  and  selling
     activity

The  Financial  Highlights  for the fiscal years ended October 31, 1997 and 1998
have been audited by Deloitte & Touche LLP, independent  auditors.  Their report
is in the funds' annual  report,  which is  incorporated  by reference  into the
Statement of Additional Information, and is available upon request. Prior years'
information was audited by other independent auditors, whose report thereon also
is incorporated by reference into the Statement of Additional Information.



<TABLE>
<CAPTION>
Limited-Term Bond
                                                           1998          1997           1996          1995          1994
PER-SHARE DATA
<S>                                                  <C>             <C>            <C>           <C>          <C>
Net Asset Value, Beginning of Year.........
                                                       ------------- -------------- ------------- ------------- --------------
Income from Investment Operations
   Net Investment Income (dividends).......
   Net Realized and Unrealized Gain (Loss) on
   Investment Transactions.................
                                                       ------------- -------------- ------------- ------------- --------------
   Total From Investment Operations........
                                                       ------------- -------------- ------------- ------------- --------------
Less Distributions
   From Net Investment Income (dividends)..
                                                       ------------- -------------- ------------- ------------- --------------
                                                       ------------- -------------- ------------- ------------- --------------
Net Asset Value, End of Year...............
                                                       ------------- -------------- ------------- ------------- --------------
Total Return(1)............................

RATIOS/SUPPLEMENTAL DATA

Ratio of Operating Expenses to 
   Average Net Assets ..................... 
Ratio of Net Investment Income to 
   Average Net Assets ..................... 
Net Assets, End of Year (in thousands).....

(1) Total return assumes reinvestment of dividends and capital gains, if any.
</TABLE>





<TABLE>
<CAPTION>
Intermediate-Term Bond

                                                           1998          1997           1996          1995          1994
PER-SHARE DATA
<S>                                                  <C>             <C>            <C>           <C>          <C>
Net Asset Value, Beginning of Year.........
                                                       ------------- -------------- ------------- ------------- --------------
Income from Investment Operations
   Net Investment Income (dividends).......
   Net Realized and Unrealized Gain (Loss) on
   Investment Transactions.................
                                                       ------------- -------------- ------------- ------------- --------------
   Total From Investment Operations........
                                                       ------------- -------------- ------------- ------------- --------------
Less Distributions
   From Net Investment Income (dividends)..
                                                       ------------- -------------- ------------- ------------- --------------
                                                       ------------- -------------- ------------- ------------- --------------
Net Asset Value, End of Year...............
                                                       ------------- -------------- ------------- ------------- --------------
Total Return(1)............................

RATIOS/SUPPLEMENTAL DATA

Ratio of Operating Expenses to 
   Average Net Assets ..................... 
Ratio of Net Investment Income to 
   Average Net Assets ..................... 
Net Assets, End of Year (in thousands).....

(1) Total return assumes reinvestment of dividends and capital gains, if any.
</TABLE>



<TABLE>
<CAPTION>
American Century Bond

                                                           1998          1997           1996          1995          1994
PER-SHARE DATA
<S>                                                  <C>             <C>            <C>           <C>          <C>
Net Asset Value, Beginning of Year.........
                                                       ------------- -------------- ------------- ------------- --------------
Income from Investment Operations
   Net Investment Income (dividends).......
   Net Realized and Unrealized Gain (Loss) on
   Investment Transactions.................
                                                       ------------- -------------- ------------- ------------- --------------
   Total From Investment Operations........
                                                       ------------- -------------- ------------- ------------- --------------
Less Distributions
   From Net Investment Income (dividends)..
                                                       ------------- -------------- ------------- ------------- --------------
                                                       ------------- -------------- ------------- ------------- --------------
Net Asset Value, End of Year...............
                                                       ------------- -------------- ------------- ------------- --------------
Total Return(1)............................

RATIOS/SUPPLEMENTAL DATA

Ratio of Operating Expenses to 
   Average Net Assets ..................... 
Ratio of Net Investment Income to 
   Average Net Assets ..................... 
Net Assets, End of Year (in thousands).....

(1) Total return assumes reinvestment of dividends and capital gains, if any.
</TABLE>





At Your Service

Make virtually any transaction online

The next time you're  surfing the Net,  stop by American  Century's  Web site at
www.americancentury.com.   Current   shareholders   can  open  new  accounts  by
exchanging  shares  (provided  the account  registration  does not  change).  In
addition,  you can view  transactions and check your account  balances.  You can
also sign up to  receive  annual  updates  to your  prospectuses  and  financial
reports via the Net instead of through the mail.

Expand your investment options with American Century Brokerage

If  you're  looking  for a wide  range  of  investment  options  - from  trading
individual  securities  to  purchasing  mutual  funds  offered  by  hundreds  of
companies  - look to  American  Century  Brokerage.  With  this  new  investment
service, you can take advantage of 24-hour trading on our Web site or TeleSelect
automated  telephone  service.  Or, if you prefer,  you can do business directly
with a Brokerage Associate.

With service features including a Gold MasterCard(R)  ATM/Debit Card,  unlimited
CheckWriting  and cost basis reporting (all available with the American  Century
Brokerage Access  AccountSM),  our brokerage  service can simplify your life now
while you  prepare  financially  for the years to come.  For  information  about
opening a brokerage account, please call an American Century Brokerage Associate
at 1-888-345-2071.

Send your distributions straight to the bank

If you opt to have your dividend and capital gain  distributions  paid to you in
cash rather than  reinvesting  them into your  account,  consider an  electronic
transfer  to your  bank  account.  It will save you time and a trip to the bank.
Call an Investor Services Representative for more information.

Check out our library

Are you looking for additional information on bond basics? Or, are you trying to
decide if municipal bonds have a place in your portfolio? Perhaps you would like
to test your knowledge of bonds and how they work. These are subjects covered in
our Financial FYI library that are  available to you.  Financial  FYI, a growing
library of one-page  resources,  clearly and quickly explains various  financial
subjects to help you make informed decisions.  To request one of these articles,
call an Investor Services Representative.






More information about the funds is contained in these documents:

Annual and Semiannual Reports.  These reports contain more information about the
fund's  investments  and the market  conditions and investment  strategies  that
significantly  affected the fund's  performance during the most recent six-month
fiscal period.

Statement of Additional  Information.  The SAI contains a more  detailed,  legal
description  of the funds'  operations,  investment  restrictions,  policies and
practices. The SAI is incorporated by reference into this Prospectus. This means
that it is legally part of this Prospectus, even if you don't request a copy.

You also can get information about the funds (including the SAI) from the SEC.

v    In person.            SEC Public Reference Room
                           Washington, D.C.
                           Call 1-800-SEC-0330 for location and hours.

v    On the internet.      www.sec.gov.

v    By mail.              Public Reference Section
                           Washington, D.C.
                           20549-6009
                           The SEC will charge a fee for  copying the  documents
                           you request.


American Century Investments
P.O. Box 419200
Kansas City, Missouri 64141-6200

Investor Services
1-800-345-2021 or 816-531-5575

Automated Information Line
1-800-345-8765

Fax
816-340-7962

www.americancentury.com

Telecommunications Device for the Deaf
1-800-634-4113 or 816-444-3485

Corporate, Not-for-Profit, Keogh,
SEP-, SARSEP-, SIMPLE-IRA and 403(b) Services
1-800-345-3533

Investment Company Act File No. 811-0816
<PAGE>
[american century logo(reg.sm)]
American
Century

Prospectus

January 29, 1999
- --------------------------------------------------------------------------------

AMERICAN CENTURY

Balanced

Investor Class

The Securities and Exchange Commission has not approved or disapproved these
securities or determined if this Prospectus is accurate or complete. Anyone who
tells you otherwise is committing a crime.

Distributed by Funds Distributor, Inc.




Reading a prospectus doesn't have to be a chore. We've done the hard work so you
can focus on what's  important--learning  about the fund. Take a look inside and
you'll see this  prospectus  is  different  from  others.  It takes a  clear-cut
approach to fund information.

Here's what you'll find:

o    The fund's primary investments and risks

o    A description of who may or may not want to invest in the fund

o    Fund performance,  including returns for each year, best and worst quarters
     and average annual returns compared to the fund's benchmarks

o    An overview of ways to best manage your accounts

o    Helpful tips and definitions of key investment terms

Whether  you're a current  investor or  investing  in mutual funds for the first
time, this prospectus  will give you a clear  understanding  of the fund. If you
have questions,  our Investor Services Representatives are available weekdays, 7
a.m. to 7 p.m.  Central time. Our toll-free  number is  1-800-345-2021.  We look
forward to helping you achieve your financial goals.

                                      Sincerely,


                                      Mark Killen
                                      Senior Vice President
                                      American Century Investment Services, Inc.






Table of Contents

An Overview of the Fund.............................................2

Fees and Expenses...................................................3

Detailed Information about the Fund.................................4

Management.........................................................15

Investing with American Century....................................18

Share Price and Distributions......................................21

Taxes..............................................................22

Multiple Class Information.........................................22

Financial Highlights...............................................23

At Your Service....................................................XX

Fund Reference

            Fund Code              Ticker          Newspaper Listing
- -------------------------------------------------------------------------------
Balanced    031                    TWBIX           Balanced
- -------------------------------------------------------------------------------

**********LEFT MARGIN CALLOUTS

Throughout this book you'll find definitions of key investment terms and
phrases. When you see a word printed in green italics, look for its definition
in the left margin.

*........This symbol highlights special information and helpful tips.

**********END LEFT MARGIN CALLOUTS



An Overview of the Fund

What is the fund's investment goal?

This fund seeks long-term capital growth and current income by investing
approximately 60% of the fund's assets in equity securities, while the remainder
is invested in bonds and other fixed income securities.

What is the fund's primary investment strategy?

In selecting stocks for the equity portion of Balanced, the advisor selects
primarily from the largest 1500 publicly traded U.S. companies. The fixed-income
portion of the fund is invested in a diversified portfolio of high-grade
securities. A more detailed description of the fund's investment strategy begins
on page XX

What are the fund's principal risks?

                                                                                
o Market Risk       the value of the fund's  shares will go up and down based on
                    the  performance of the companies  whose  securities it owns
                    and other factors affecting the securities market generally.

oInterest Rate Risk when  interest  rates  change,   the  value  of  the  fund's
                    fixed-income securities will be affected.

o Principal Loss    as with all mutual funds, if you sell your shares when their
                    value is less than the price you paid, you will lose money.

Who may want to invest in the fund?

The fund may be a good investment if you are

0    seeking a fund that combines the potential  for  long-term  capital  growth
     with income

0    seeking  the  convenience  of a  fund  that  invests  in  both  equity  and
     fixed-income securities

0    comfortable with the risks associated with the fund's investment strategy

0        investing through an IRA or other tax-advantaged retirement plan

Who may not want to invest in the fund?

The fund may not be a good investment if you

0    do not want current income from your investment

0    investing for a short period of time

0    uncomfortable with volatility in the value of your investment

**********LEFT MARGIN CALLOUTS

*    An investment in the fund is not a bank deposit and is not insured or
     guaranteed by the Federal Deposit Insurance Corporation or any other
     government agency.

**********END LEFT MARGIN CALLOUTS





Fees and Expenses

There are no sales loads or fees or other charges

0    to buy fund shares directly from American Century

0    to reinvest dividends in additional shares

0    to exchange into the Investor Class shares of other American Century funds.

The following tables describe the fees and expenses that you may pay if you buy
and hold shares of the fund.

<TABLE>
Annual Operating Expenses (expenses that are deducted from fund assets)
           Management Fee   Distribution and         Other          Total Annual Fund
                            Service (12b-1) Fees     Expenses1      Operating Expenses
- ---------- ---------------- ------------------------ -------------- -----------------------
<S>        <C>              <C>                      <C>            <C>  
Balanced   1.00%            None                     0.00%          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.
</TABLE>

Example of Hypothetical Fund Costs

The examples in the table below are intended to help you compare the costs of
investing in a fund with those of other mutual funds. Assuming you ...

o        invest $10,000 in the fund

o        redeem all of your shares at the end of the periods shown below

o        earn a 5% return each year and

o        incur the same operating expenses shown above

 ... your cost of investing in the fund would be:
            1 Year          3 Years          5 Years          10 Years
- ----------- --------------- ---------------- ---------------- ----------------
Balanced    $102            $318             $551             $1,219
- ----------- --------------- ---------------- ---------------- ----------------

**********LEFT MARGIN CALLOUTS

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

**********END LEFT MARGIN CALLOUTS





Detailed Information about the Fund

Balanced

What is the fund's investment objective?

The fund seeks long-term capital growth and current income by investing
approximately 60% of the fund's assets in equity securities, while the remainder
is invested in bonds and other fixed income securities. This is a fundamental
policy and cannot be changed without shareholder approval.

How does the fund pursue its investment objective?

With the equity portion of the Balanced portfolio, the fund managers utilize
quantitative management techniques in a two-step process that draws heavily on
computer technology. In the first step, the fund managers rank stocks, primarily
the 1,500 largest publicly traded companies in the United States (measured by
the value of their stock). These rankings are determined by using a computer
model that combines measures of a stock's value, as well as measures of its
growth potential. To measure value, the manager uses ratios of stock price to
book value and stock price to cash flow, among others. To measure growth, the
managers use, among others, the rate of growth of a company's earnings and
changes in its earnings estimates.

In the second step, the managers use a technique called portfolio optimization.
In portfolio optimization, the manager uses a computer to build a portfolio of
stocks from the ranking described earlier that it thinks will provide the
optimal balance between risk and expected return. The goal is to create an
equity portfolio that provides better returns than the S&P 500 without taking on
significant additional risk.

The fixed-income portion of the fund's portfolio is invested primarily in a
diversified portfolio of high-grade government, corporate, asset-backed and
similar securities payable in U.S. currency, with a minimum of 25% of the fund's
assets in fixed-income senior securities. At least 80% of the fixed-income
assets will be invested in securities that, at the time of purchase, are rated
within the three highest categories by a nationally recognized statistical
rating organization. Up to 20% of the fixed income portion may be invested in
the fourth category rated securities, and up to 15% may be invested in the fifth
category. Under normal market conditions the weighted average maturity for the
fixed-income portfolio will be in the three- to 10-year range.

The fund managers do not attempt to time the market. Instead, they intend to
keep the fund essentially fully invested in stocks regardless of the movement of
stock prices generally. When the fund managers believe that it is prudent, the
fund may invest a portion of its assets in convertible securities, foreign
securities, short-term securities, non-leveraged stock index futures contracts
and other similar securities. Stock index futures contracts, a type of
derivative security, can help the fund's cash assets remain liquid while
performing more like stocks. The fund has a policy governing stock index futures
and similar derivative securities to help manage the risk of these types of
investments. For example, the fund managers cannot leverage the fund's assets by
investing in a derivative security. A complete description of the derivatives
policy is included in the Statement of Additional Information.

**********LEFT MARGIN CALLOUTS

Senior Securities is a term that refers to the bonds of a company that are first
in line for payment if it has difficulties meeting its payment obligations. As
long as a series of a company's bonds is not subordinated to another series of
the company's bonds, it is considered "senior" debt.

Weighted average maturity is a tool that the advisor uses to approximate the
remaining maturity of a fund's investment portfolio. Generally, the longer a
fund's weighted average maturity, the more sensitive it is to changes in
interest rates.

**********END LEFT MARGIN CALLOUTS



Additional information about Balanced'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 six-month period. You may get these
reports at no cost by calling us.

**********LEFT MARGIN CALLOUTS

*    Fixed-income securities are rated by nationally recognized securities
     ratings organizations (SROs), such as Moody's and Standard & Poor's. Each
     SRO has its own system for classifying securities, but each tries to
     indicate a company's ability to make timely payments of interest and
     principal. A detailed description of SROs, their ratings system and what we
     do if a security isn't rated is included in the Statement of Additional
     Information.

**********END LEFT MARGIN CALLOUTS

What are the primary risks of investing in the fund?

The value of Balanced's shares depends on the value of the stocks, bonds and
other securities it owns.

o    The value of the individual equity securities Balanced owns will go up and
     down depending on the performance of the companies that issued them,
     general market and economic conditions, and investor confidence.

o    The value of the fund's fixed-income securities will be affected primarily
     by rising or falling interest rates and the continued ability of the
     issuers of these securities to make payments of interest and principal as
     they become due.

Generally, when interest rates rise, the value of the fund's fixed-income
securities will decline. The opposite is true when interest rates decline. The
interest rate risk for Balanced is higher than for funds that have a shorter
weighted average maturity, such as money market and short-term bond funds.

The lowest rated bonds in which the fund may invest, BBB- and BB-rated bonds,
contain some speculative characteristics. Having these bonds in the fund's
portfolio means the fund's value may go down more if interest rates or other
economic conditions change than if the fund contained only higher rated bonds.

As with all funds, at any given time, the value of your shares of Balanced 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.






Fund Performance History

The performance information on this page is designed to help you see how fund
returns can vary. Keep in mind that past performance does not predict how the
funds will perform in the future.

Annual Total Returns

The following bar chart shows the performance of the fund's shares for each of
the last 10 calendar years (or for each full year in the life of the fund if
less than 10 years). It indicates the volatility of the fund's historical
returns from year to year.

[GRAPH  DEPICTING  ANNUAL TOTAL RETURNS FOR BALANCED  SINCE  INCEPTION;  UPDATED
FIGURES NOT AVAILABLE]

Highest and Lowest Quarterly Returns

The highest and lowest returns of the fund's shares for a calendar quarter
during the life of the fund are provided below to indicate the fund's historical
short-term volatility. Shareholders should be aware, however, that the fund is
intended for investors with a long-term investment horizon and are not managed
for short-term results.

[GRAPH  DEPICTING  HIGHEST AND LOWEST  RETURNS  FOR  BALANCED  SINCE  INCEPTION;
UPDATED FIGURES NOT AVAILABLE]

Average Annual Returns

The following table shows the average annual returns of the fund's shares for
the periods indicated during the last 10 calendar years. The Blended Index is
included as a benchmark for performance comparison. The benchmark is an
unmanaged index that has no operating costs.

                            1 year           5 years          10 years
- -------------------------------------------------------------------------------
Balanced                    XXX%             XXX%             XX.X%
Blended Index*              XXX%             XXX%             XX.X%
- -------------------------------------------------------------------------------

*  The Blended Index is a combination of two widely known indices in proportion
   to the approximate asset mix of the fund. Accordingly, 60% of the Blended
   Index consists of the performance of the S&P 500, which represents the equity
   portion of the fund, and 40% of the Blended Index consists of the Lehman
   Intermediate Government/Corporate Index, which represents the fixed income
   portion.

**********LEFT MARGIN CALLOUTS

The fund's total return for the period from January 1, 1998, to September 30,
1998, is:

Balanced      X.XX%

*    For current performance information, please call us at 1-800-345-2021 or
     visit American Century's Web site at www.americancentury.com.

**********END LEFT MARGIN CALLOUTS






Management

Who manages the fund?

The Board of Directors, investment advisor and portfolio management team play
key roles in the management of the fund.

The Board of Directors

The Board of Directors oversees the management of the fund and meets at least
quarterly to review reports about fund operations. Although the Board of
Directors does not manage the fund, it has hired an investment advisor to do so.
More than half of the Directors are independent of the fund's advisor, that is,
they are not employed by and have no financial interest in the advisor.

The Investment Advisor

The fund's investment advisor is American Century Investment Management, Inc.
The advisor has been managing mutual funds since 1958. American Century is
headquartered at 4500 Main Street, Kansas City, Missouri 64111.

The advisor is responsible for managing the investment portfolios of the fund
and directing the purchase and sale of its investment securities. The advisor
also arranges for transfer agency, custody and all other services necessary for
the fund to operate.

For the services it provided to the fund during its most recent fiscal year, the
advisor received a unified management fee of 1.0% the average net assets of the
fund. The amount of the management fee is calculated daily and paid monthly. Out
of that fee, the advisor pays all expenses of managing and operating the fund
except brokerage expenses, taxes, interest, fees and expenses of the independent
Directors (including legal fees) and extraordinary expenses.




The Fund Management Team

The advisor uses teams of portfolio managers, assistant portfolio managers and
analysts to manage the fund. Teams meet regularly to review portfolio holdings
and to discuss purchase and sale activity. Team members buy and sell securities
for a fund as they see fit, guided by the fund's investment objective and
strategy.

Portfolio manager members of the investment team are identified below:

Norman E. Hoops

Norman E. Hoops, Senior Vice President and Portfolio Manager, has been a member
of the team that manages Balanced since November 1989. He joined American
Century as Vice President and Portfolio Manager in November 1989. In April 1993,
he became Senior Vice President. He has a bachelor of arts degree from Indiana
University and an MBA from Butler University.

John Schniedwind

John Schniedwind, Senior Vice President and Group Leader-Quantitative Equity,
has been a member of the team that manages Balanced since November 1998. He
joined American Century in 1982 and also supervises other portfolio management
teams. He has a bachelor of science degree from Purdue University and an MBA in
finance from University of California. He is a Chartered Financial Analyst.

Jeffrey R. Tyler

Jeffrey R. Tyler, Senior Vice President and Portfolio Manager, has been a member
of the team that manages Balanced since November 1998. He has been with American
Century as a portfolio manager since January 1988. He has a bachelor's degree in
business economics from the University of California and an MBA in finance and
economics from Northwestern University. He is a Chartered Financial Analyst.

Jeffrey L. Houston

Jeffrey L. Houston, Portfolio Manager, has been a member of the team that
manages Balanced since June 1995. He joined American Century as an Investment
Analyst in November 1990 and was promoted to Portfolio Manager in 1994. He has a
bachelor of arts degree from the University of Delaware and an MPA from Syracuse
University. He is a Chartered Financial Analyst.

**********LEFT MARGIN CALLOUTS

*    Code of Ethics

     American Century has a Code of Ethics designed to ensure that the interests
     of fund shareholders come before the interests of the people who manage the
     fund. Among other provisions, the Code of Ethics prohibits portfolio
     managers and other investment personnel from buying securities in an
     initial public offering or from profiting from the purchase and sale of the
     same security within 60 calendar days. In addition, the Code of Ethics
     requires portfolio managers and other employees with access to information
     about the purchase or sale of securities by the funds to obtain approval
     before executing permitted personal trades.

**********END LEFT MARGIN CALLOUTS




Fundamental Investment Policies

Fundamental investment policies contained in the Statement of Additional
Information and the investment objectives of the fund may not be changed without
a shareholder vote. The Board of Directors may change any other policies and
investment strategies.

Year 2000 Issues

Many of the world's computer systems currently cannot properly recognize or
process date-sensitive information relating to the Year 2000 and beyond. Because
this may impact the computer systems of various American Century-affiliated and
external service providers for the fund, American Century formally initiated a
Year 2000 readiness project in July 1997. It involves a team of information
technology professionals assisted by outside consultants and guided by a
senior-level steering committee. The team's goal is to assess the impact of the
Year 2000 on American Century's systems, renovate or replace noncompliant
critical systems and test those systems. In addition, the team has been working
to gather information about the Year 2000 efforts of the fund's other major
service providers. Although American Century believes its critical systems will
function properly in the Year 2000, this is not guaranteed. If the efforts of
American Century or its external service providers are not successful, the
fund's business, particularly the provision of shareholder services, may be
hampered.

In addition, the issuers of securities the fund owns could have Year 2000
computer problems. These problems could negatively affect the value of their
securities, which, in turn, could impact the fund's performance. The advisor has
established a process to gather publicly available information about the Year
2000 readiness of these issuers. However, this process may not uncover all
relevant information, and the information gathered may not be complete and
accurate. Moreover, an issuer's Year 2000 readiness is only one of many factors
the fund managers may consider when making investment decisions, and other
factors may receive greater weight.






How to Invest in American Century

Services Automatically Available to You

You automatically will have access to the services listed below when you open
your account. If you do not want these services, see "Conducting Business in
Writing" below.

Conducting Business in Writing

If you prefer to conduct business in writing only, you can indicate this on the
account application. If you choose to do business in writing only, you must
provide written instructions to invest, exchange and redeem. All account owners
must sign transaction instructions (with signatures guaranteed for redemptions
in excess of $100,000). If you want to add services later, you can complete an
Investor Service Options form.

<TABLE>
Ways to Manage Your Account
- -------------------------------------------------------------------------------------------------------------------------------
- ---------------------------------- ---------------------------------------------- -----------------------------------------------
<S>                                <C>                                            <C>
By telephone                       Open an account                                Make additional investments
Investor Services                  If you are a current investor, you             Call us or use our Automated Information Line
1-800-345-2021                     can open an account by exchanging              if you have authorized us to invest from your
7 a.m. to 7 p.m. Central time      shares from another American Century           bank account.
                                   account. (This service is not
Automated Information Line         available if you have chosen to do             Sell shares
1-800-345-8765                     business in writing only.)                     Call an Investor Services Representative.
24 hours a day
seven days a week                  Exchange shares
                                   Call us or use our Automated Information Line
                                   if you have authorized us to accept telephone
                                   instructions.
- ---------------------------------- ---------------------------------------------- -----------------------------------------------
- ---------------------------------- ---------------------------------------------- -----------------------------------------------
By mail or fax                     Open an account                                Make additional investments 
PO Box 419200                      Send a signed and completed                    Send us your check or money order for at 
Kansas City, MO 64141-6200         application and check or money order           least $50 with an investment slip or $250
                                   payable to American Century                    without an investment slip. If you don't have
Fax 816-340-7962                   Investments.                                   an investment slip, include your name,
                                                                                  address and account number on your check or
                                   Exchange shares                                money order.
                                   Send us written instructions to
                                   exchange your shares from one                  Sell shares
                                   American Century account to another.           Send us written instructions to sell shares
                                                                                  or send us a redemption form. Call an
                                                                                  Investor Services Representative to request a
                                                                                  form.
- ---------------------------------- ---------------------------------------------- -----------------------------------------------
- ---------------------------------- ---------------------------------------------- -----------------------------------------------
Online                             Open an account                                Make additional investments
www.americancentury.com            If you are a current investor, you             Follow the instructions online if you have
                                   can open an account by exchanging              authorized us to invest from your bank
                                   shares from another American Century           account.
                                   account online. (This service is not
                                   available if you have chosen to do             Sell shares
                                   business in writing only.)                     Not available.

                                   Exchange shares
                                   Exchange shares from another American Century
                                   account.





A Note About Mailings to Shareholders

To reduce expenses and demonstrate respect for our environment, we will deliver
most financial reports, prospectuses and account statements to households in a
single envelope, even if the accounts are registered under different names. If
you would like additional copies of financial reports and prospectuses or
separate mailing of account statements, please call us.

Your Guide to Services and Policies

When you open an account, you will receive an Investor Services Guide, which
explains the services available to you and the policies of the fund and the
transfer agent.

- ---------------------------------------------------------------------------------------------------------------------------------
- -------------------------------- ----------------------------------------------   -----------------------------------------------
By wire                          Open an account                                  Make additional investments
                                 Call us to set up your account or mail           Follow the wire instructions provided in the
                                 a completed application to the address           "Open an account" section
                                 provided in the "By Mail" section and
                                 give your bank:                                  Sell shares
                                 o  Our bank information:                         You can receive redemption proceeds by
*    Please remember that           -     Commerce Bank N.A.                      wire  or electronic transfer.  (This
     if you request                 -     Routing No. 101000019                   service is not available if you have
     redemptions by wire, $10       -     ACMF Account No. 2804918                chosen to do business in writing only.)
     will be deducted from the   o        The fund name
     amount wired. Your bank     o        Your American Century account number
     also may charge a fee.      o        Your name
                                 o        The contribution year (for IRAs only)   Exchange shares
                                                                                  Not available.

- -------------------------------- ------------------------------------------------ -----------------------------------------------
- -------------------------------- ------------------------------------------------ -----------------------------------------------
Automatically                    Open an account                                  Make additional investments
                                 Not available.                                   Select "Establish Automatic Investments" on
                                                                                  your application to make automatic purchases
                                 Sell shares                                      of shares on a regular basis. You must invest
                                 If you have at least $10,000 in your             at least $600 per year per account.
                                 account, sell shares automatically by
                                 establishing Check-A-Month or Automatic          Exchange shares
                                 Redemption.                                      Send us written instructions to set up an
                                                                                  automatic exchange of your shares from one
                                                                                  American Century account to another.

- -------------------------------- ------------------------------------------------ -----------------------------------------------
- -------------------------------- ------------------------------------------------------------------------------------------------
In person                        If you prefer to handle your
                                 transactions in person, visit one of our
                                 Investor Centers and a representative can help
                                 you open an account, make additional
                                 investments, sell or exchange shares. Here are
                                 the Investor Centers you can visit

                                 4500 Main Street                        4917 Town Center Dr.
                                 Kansas City, Missouri                   Leawood, Kansas

                                 1665 Charleston Road                    2000 S. Colorado Blvd.
                                 Mountain View, California               Denver, Colorado
</TABLE>





Minimum Initial Investment Amounts

To open an account the minimum investments are as follows for:
- --------------------------------------------------------------------------------
Individual or Joint                                                  $2,500
Traditional IRA                                                      $1,000
Roth IRA                                                             $1,000
Education IRA                                                          $500
UGMA/UTMA                                                            $1,000
403(b)                                                           No minimum

Redemption of shares in low-balance accounts

If your account falls below the minimum balance we will notify you and give you
90 days to meet the minimum or, for most types of equity accounts, to establish
an automatic monthly investment. If you do not meet the deadline, American
Century will redeem the shares in the account and send the proceeds to your
address of record.

Special requirements for large redemptions

The fund has elected to be governed by Rule 18f-1 under the Investment Company
Act, which obligates each fund to make certain redemptions in cash. This
requirement applies when a shareholder redeems, during any 90-day period, up to
the lesser of $250,000 or 1% of the assets of the fund. Although we normally
will pay redemptions in excess of this limitation in cash, American Century
reserves the right under unusual circumstances to honor these redemptions in
kind by making payment in whole or in part in readily marketable securities.

If we make payment in securities, we will value the securities, selected by the
fund, in the same manner as we do in computing the fund's net asset value. We
will provide these securities to the redeeming plan participant or financial
intermediary in lieu of cash without prior notice. If your redemption would
exceed this limit and you would like to avoid being paid in securities, please
provide us with an unconditional instruction to redeem at least 15 days prior to
the date on which the redemption transaction is to occur. The instruction must
specify the dollar amount or number of shares to be redeemed and the date of the
transaction. This minimizes the effect of the redemption on the fund and its
remaining shareholders.

While each fund reserves the right to redeem fund shares through a
redemption-in-kind, we do not expect to exercise this option unless a fund has
an unusually low level of cash to meet redemptions and/or is experiencing
unusually strong demands for its cash. Such a demand might be caused, for
example, by extreme market conditions that result in an abnormally high level of
redemption requests concentrated in a short period of time. Absent these or
similar circumstances, we expect redemptions in excess of $250,000 to be paid in
cash in any fund with assets of more than $50 million if total redemptions from
any one account in any 90-day period do not exceed one-half of 1% of the total
assets of the fund.



Investing Through Financial Intermediaries

If you do business with us through a financial intermediary or a retirement
plan, your ability to purchase, exchange and redeem shares will depend on the
policies of that entity. Some policy differences may include

o        minimum investment requirements
o        exchange policies
o        fund choices
o        cut-off time for investments

Please contact your financial intermediary or plan sponsor for a complete
description of its policies. Copies of the funds' annual reports, semiannual
reports and Statements of Additional Information are available from your
intermediary or plan sponsor.

Certain financial intermediaries perform recordkeeping and administrative
services for their clients that would otherwise be performed by American
Century's transfer agent. In some circumstances, American Century will pay the
service provider a fee for performing those services.

Although transactions in fund shares may be made directly with American Century
at no charge, you also may purchase, redeem and exchange fund shares through
financial intermediaries that charge a transaction-based or other fee for their
services. Those charges are retained by the intermediary and are not shared with
American Century or the funds.

American Century has contracts with certain financial intermediaries in which
they represent that they will track the time investment orders are received. The
funds have authorized those intermediaries to accept orders on each fund's
behalf up to the time net asset value is determined. Such orders will be priced
at the net asset value next determined after acceptance of the order on a fund's
behalf.





Share Price and Distributions

Share Price

We determine the net asset value of the fund as of the close of regular trading
on the New York Stock Exchange (usually 4 p.m. Eastern time) on each day the
Exchange is open. On days when the Exchange is not open, we do not calculate the
net asset value. The net asset value of the fund share is the current value of
its investments, minus any liabilities, divided by the number of fund shares
outstanding.

If current prices of securities owned by a fund are not readily available from
an independent pricing service, the advisor may determine their fair value in
accordance with procedures adopted by the fund's Board of Directors. Trading of
securities in foreign markets may not take place on every day the Exchange is
open. Also, trading in some foreign markets may take place on weekends or
holidays when the fund's net asset value is not calculated. So, the value of the
fund's portfolio may be affected on days when you can't purchase or redeem its
shares.

We will price your purchase, exchange or redemption at the net asset value next
determined after we receive your transaction request in good order.

Distributions

Federal tax laws require the fund make distributions to its shareholders in
order to qualify as a "regulated investment company." Qualification as a
regulated investment company means that the fund will not be subject to state or
federal income tax on amounts distributed. The distributions generally consist
of dividends and interest received, as well as capital gains realized on the
sale of investment securities. The fund pays distributions from net income
monthly. The fund generally pays distributions of capital gains, if any, once a
year in December. The fund may make more frequent distributions if necessary to
comply with Internal Revenue Code provisions.

Participants in employer-sponsored retirement or savings plans must reinvest all
distributions. For shareholders investing through taxable accounts, we will
reinvest distributions unless you elect to receive them in cash. Please consult
our Investor Services Guide for further information regarding distributions and
your distribution options.

**********LEFT MARGIN CALLOUTS

The "net asset value" of the fund is the price of its shares.

"Capital gains" is the increase in value of a capital asset, such as stock, from
the time it is purchased. Tax becomes due on capital gains once the asset is
sold.

**********END LEFT MARGIN CALLOUTS




Taxes

The tax consequences of owning shares of the fund will vary depending on whether
you own them through a taxable or tax-deferred account. Tax consequences result
from distributions by the fund of dividend and interest income it has received
and capital gains it has generated through its investment activities, and by
sales of fund shares by investors after the net asset value has increased or
decreased.

Tax-Deferred Accounts

If you purchase fund shares through a tax-deferred account, such as an IRA or a
qualified employer-sponsored retirement or savings plan, income and capital
gains distributions usually will not be subject to current taxation, but will
accumulate in your account under the plan on a tax-deferred basis. Likewise,
moving from one fund to another fund within a plan or tax-deferred account
generally will not cause you to be taxed. For information about the tax
consequences of making purchases or withdrawals through an employer sponsored
retirement or savings plan, or through an IRA, please consult your plan
administrator, your summary plan description or a professional tax advisor.

Taxable Accounts

If you own fund shares through a taxable account, distributions by the fund and
sales by you of fund shares may cause you to be taxed.

Taxability of Distributions

Distributions may consist of income earned by the fund from sources such as
dividends and interest, or capital gains generated from the sale of fund
investments. Distributions of income are taxed as ordinary income. Distribution
of capital gains are classified either as short-term or long-term and are taxed
as follows:

<TABLE>
Type of distribution        Tax rate for 15% bracket     Tax rate for 28% bracket or above
- ------------------------- --------------------------- -----------------------------------------
<S>                        <C>                            <C>
Short-term capital gains      Ordinary income rate              Ordinary income rate
Long-term capital gains                10%                              20%
</TABLE>

The tax status of any distribution of capital gains is determined by how long
the fund held the underlying security that was sold, not by how long you have
been invested in the fund or whether you reinvest your distributions in
additional shares or take them as income. American Century will send you a
detail of the tax status of fund distributions for each calendar year in an
annual tax statement from the fund.

Distributions may also be subject to state and local taxes. Because everyone's
tax situation is unique, always consult your tax professional about federal,
state and local tax consequences.

Taxes on Transactions

Your redemptions -- including exchanges to other American Century funds -- are
subject to capital gains tax. The table above can provide a general guide for
your potential tax liability when selling or exchanging fund shares. "Short-term
capital gains" are gains on fund shares held less than or equal to 12 months.
"Long-term capital gains" are gains on fund shares held for more than 12 months.
If your shares decrease in value, their sale or exchange will result in a
long-term or short-term capital loss.

**********LEFT MARGIN CALLOUTS

*    Buying a Dividend

     Purchasing fund shares in a taxable account shortly before a distribution
     is sometimes known as "buying a dividend." In taxable accounts, you must
     pay income taxes on the distribution whether you take the distribution in
     cash or reinvest it. In addition, you will have to pay taxes on the
     distribution whether the value of your investment decreased, increased or
     remained the same after you bought the fund shares. The risk in buying a
     dividend is that a fund's portfolio may build up taxable gains throughout
     the period covered by a distribution, as securities are sold at a profit.
     We distribute those gains to you, after subtracting any losses, even if you
     did not own the shares when the gains occurred. Thus if you buy a dividend,
     you incur the full tax liability of the distribution period, but you may
     not enjoy the full benefit of the gains realized in the fund's portfolio.

**********END LEFT MARGIN CALLOUTS

Multiple Class Information

American Century offers three classes of the fund: Investor Class, Institutional
Class and Advisor Class. The shares offered by this Prospectus are Investor
Class shares and have no up-front or deferred charges, commissions, or 12b-1
fees.

American Century offers the other classes of shares primarily to institutional
investors, through institutional distribution channels, such as
employer-sponsored retirement plans, or through banks, broker-dealers and
insurance companies. The other classes have different fees, expenses, and/or
minimum investment requirements than the Investor Class. The difference in the
fee structures among the classes is the result of their separate arrangements
for shareholder and distribution services and not the result of any difference
in amounts charged by the advisor for core investment advisory services.
Accordingly, the core investment advisory expenses do not vary by class.
Different fees and expenses will affect performance. For additional information
concerning the other classes of shares not offered by this Prospectus, call us
at 1-800-345-3533 or contact a sales representative or financial intermediary
who offers those classes of shares.

Except as described below, all classes of shares of a fund have identical
voting, dividend, liquidation and other rights, preferences, terms and
conditions. The only differences among the various classes are (a) each class
may be subject to different expenses specific to that class, (b) each class has
a different identifying designation or name, (c) each class has exclusive voting
rights with respect to matters solely affecting such class, (d) each class may
have different exchange privileges, and (e) the Institutional Class may provide
for automatic conversion from that class into shares of the Investor Class of
the same fund.




Financial Highlights

Understanding the Financial Highlights

This table itemizes what contributed to the changes in share price during the
period, and compares this to changes over the last five fiscal years (or less,
if the share class is not five years old).

On a per-share basis, it includes:

o        share price at the beginning of the period
o        investment income and capital gains or losses
o        distributions of income and capital gains paid to shareholders
o        share price at the end of the period

It also includes some key statistics for the period:

o    Total Return--the  overall  percentage of return of the fund,  assuming the
     reinvestment of all distributions

o    Expense Ratio--operating expenses as a percentage of average net assets

o    Net Income  Ratio--net  investment  income as a  percentage  of average net
     assets

o    Portfolio  Turnover--the  percentage  of  the  fund's  buying  and  selling
     activity

The Financial  Highlights  for the fiscal years ended October 31, 1997 and 1998,
have been audited by Deloitte & Touche LLP, independent  auditors.  Their report
is in the fund's annual  report,  which is  incorporated  by reference  into the
Statement of Additional Information, and is available upon request. Prior years'
information was audited by other independent  auditors whose report thereon also
is incorporated by reference into the Statement of Additional Information.




<TABLE>
<CAPTION>
Balanced

                                                           1998          1997           1996          1995          1994
PER-SHARE DATA
<S>                                                  <C>             <C>            <C>           <C>          <C>
Net Asset Value, Beginning of Year.........
                                                       ------------- -------------- ------------- ------------- --------------
Income from Investment Operations
   Net Investment Income (dividends).......
   Net Realized and Unrealized Gain (Loss) on
   Investment Transactions.................
                                                       ------------- -------------- ------------- ------------- --------------
   Total From Investment Operations........
                                                       ------------- -------------- ------------- ------------- --------------
Less Distributions
   From Net Investment Income (dividends)..
                                                       ------------- -------------- ------------- ------------- --------------
                                                       ------------- -------------- ------------- ------------- --------------
Net Asset Value, End of Year...............
                                                       ------------- -------------- ------------- ------------- --------------
Total Return(1)............................

RATIOS/SUPPLEMENTAL DATA

Ratio of Operating Expenses to 
   Average Net Assets ..................... 
Ratio of Net Investment Income to 
   Average Net Assets ..................... 
Net Assets, End of Year (in thousands).....

(1) Total return assumes reinvestment of dividends and capital gains, if any.
</TABLE>





At Your Service

Make virtually any transaction online

The next time you're surfing the Net, stop by American Century's Web site at
www.americancentury.com. Current shareholders can open new accounts by
exchanging shares (provided the account registration does not change). In
addition, you can view transactions and check your account balances. You can
also sign up to receive annual updates to your prospectuses and financial
reports via the Net instead of through the mail.

Expand your investment options with American Century Brokerage

If you're looking for a wide range of investment options - from trading
individual securities to purchasing mutual funds offered by hundreds of
companies - look to American Century Brokerage. With this new investment
service, you can take advantage of 24-hour trading on our Web site or TeleSelect
automated telephone service. Or, if you prefer, you can do business directly
with a Brokerage Associate.

With service features including a Gold MasterCard(R) ATM/Debit Card, unlimited
CheckWriting and cost basis reporting (all available with the American Century
Brokerage Access AccountSM), our brokerage service can simplify your life now
while you prepare financially for the years to come. For information about
opening a brokerage account, please call an American Century Brokerage Associate
at 1-888-345-2071.

Send your distributions straight to the bank

If you opt to have your dividend and capital gain distributions paid to you in
cash rather than reinvesting them into your account, consider an electronic
transfer to your bank account. It will save you time and a trip to the bank.
Call an Investor Services Representative for more information.

Check out our library

Are you looking for additional information on bond basics? Or, are you trying to
decide if municipal bonds have a place in your portfolio? Perhaps you would like
to test your knowledge of bonds and how they work. These are subjects covered in
our Financial FYI library that are available to you. Financial FYI, a growing
library of one-page resources, clearly and quickly explains various financial
subjects to help you make informed decisions. To request one of these articles,
call an Investor Services Representative.



More information about the funds is contained in these documents:

Annual and Semiannual Reports.  These reports contain more information about the
fund's  investments  and the market  conditions and investment  strategies  that
significantly  affected the fund's  performance during the most recent six-month
fiscal period.

Statement of Additional  Information.  The SAI contains a more  detailed,  legal
description  of the funds'  operations,  investment  restrictions,  policies and
practices. The SAI is incorporated by reference into this Prospectus. This means
that it is legally part of this Prospectus, even if you don't request a copy.

You also can get information about the funds (including the SAI) from the SEC.

v    In person.            SEC Public Reference Room
                           Washington, D.C.
                           Call 1-800-SEC-0330 for location and hours.

v    On the internet.      www.sec.gov.

v    By mail.              Public Reference Section
                           Washington, D.C.
                           20549-6009
                           The SEC will charge a fee for  copying the  documents
                           you request.


American Century Investments
P.O. Box 419200
Kansas City, Missouri 64141-6200

Investor Services
1-800-345-2021 or 816-531-5575

Automated Information Line
1-800-345-8765

Fax
816-340-7962

www.americancentury.com

Telecommunications Device for the Deaf
1-800-634-4113 or 816-444-3485

Corporate, Not-for-Profit, Keogh,
SEP-, SARSEP-, SIMPLE-IRA and 403(b) Services
1-800-345-3533

Investment Company Act File No. 811-0816
<PAGE>
[american century logo(reg.sm)]
American
Century

Prospectus

January 29, 1999
- --------------------------------------------------------------------------------

AMERICAN CENTURY

Giftrust

Investor Class

The  Securities and Exchange  Commission  has not approved or disapproved  these
securities or determined if this Prospectus is accurate or complete.  Anyone who
tells you otherwise is committing a crime.

Distributed by Funds Distributor, Inc.





Reading a prospectus doesn't have to be a chore. We've done the hard work so you
can focus on what's  important--learning  about the fund. Take a look inside and
you'll see this  prospectus  is  different  from  others.  It takes a  clear-cut
approach to fund information.

Here's what you'll find:

o    The fund's primary investments and risks

o    A description of who may or may not want to invest in the fund

o    Fund performance,  including returns for each year, best and worst quarters
     and average annual returns compared to the fund's benchmarks

o    An overview of ways to best manage your accounts

o    Helpful tips and definitions of key investment terms

Whether  you're a current  investor or  investing  in mutual funds for the first
time, this prospectus  will give you a clear  understanding  of the fund. If you
have questions,  our Investor Services Representatives are available weekdays, 7
a.m. to 7 p.m.  Central time. Our toll-free  number is  1-800-345-2021.  We look
forward to helping you achieve your financial goals.

                                      Sincerely,


                                      Mark Killen
                                      Senior Vice President
                                      American Century Investment Services, Inc.





Table of Contents

An Overview of the Fund......................................................2

Fees and Expenses............................................................3

Detailed Information about the Fund..........................................4

Management..................................................................15

How to Open and Make Additional Investments in a Giftrust Account...........18

Managing the Account of a Matured Giftrust..................................19

Share Price and Distributions...............................................21

Taxes.......................................................................22

Financial Highlights........................................................XX

At Your Service.............................................................XX


Fund Reference
                           Fund Code      Ticker      Newspaper Listing
- --------------------------------------------------------------------------------
 Giftrust                     025            TWGTX       Gift
- --------------------------------------------------------------------------------

**********LEFT MARGIN CALLOUTS

Throughout  this  book  you'll  find  definitions  of key  investment  terms and
phrases.  When you see a word printed in green italics,  look for its definition
in the left margin.

*........This symbol highlights special information and helpful tips.

**********END LEFT MARGIN CALLOUTS

An Overview of the Fund

What is the fund's investment goal?

This fund seeks long-term capital growth.

What are the fund's primary investment strategies and principal risks?

The fund looks for common stocks of growing,  small- to medium-sized  companies.
The basis of the strategy used by this fund is that, over the long term,  stocks
of companies with earnings and revenue growth have a greater than average chance
to  increase  in value  over  time.  A more  detailed  description  of  American
Century's "growth" investment style begins on page XX.

The fund's principal risks include:

o Market Risk       The value of the fund's  shares will go up and down based on
                    the  performance of the companies  whose  securities it owns
                    and other factors affecting the securities market generally.

o Price Volatility  The value of the fund's shares may  fluctuate  significantly
                    in the short term.

o Principal Loss    As with all mutual funds, if you sell your shares when their
                    value is less than the price you paid, you will lose money.

Who may want to invest in the fund?

The fund may be a good  investment if you are looking for a unique way to give a
gift to a child or another individual.  You cannot establish or make investments
in a Giftrust for  yourself,  your spouse or an entity other than an  individual
(such as a corporation,  partnership or other profit or nonprofit  organization)
as a beneficiary.  Instead,  you must  establish an irrevocable  trust using the
Giftrust Agreement that is part of the Giftrust Kit from American Century.

The  Giftrust  trustee  invests  your  gift in the fund for the  benefit  of the
beneficiary  you name under the Agreement.  The shares in a Giftrust are held in
trust until the maturity  date you specify.  The duration of the trust may be as
long as you wish, but must be at least 10 years from the time you make the first
gift in the  Giftrust  or  until  the  recipient  reaches  the age of  majority,
whichever is later.  The Giftrust is  irrevocable.  Before the maturity date you
specify, neither you nor the beneficiary may amend the terms of the trust in any
way.

After the  maturity of the  Giftrust,  the  beneficiary  may continue to own the
Giftrust shares, but may not make additional  Giftrust  investments,  except for
reinvestment of distributions.

Who may not want to invest in the fund?

The fund is not be a good investment if you are

     0    uncomfortable giving up control over your gift

     0    uncomfortable  with the risks  associated  with the fund's  investment
          strategy and its short-term volatility

     0    seeking  an  investment   that  qualifies  for  the  annual  Gift  Tax
          exclusion. See "Taxes" on page XX.

**********LEFT MARGIN CALLOUTS

*    An  investment  in the fund is not a bank  deposit  and is not  insured  or
     guaranteed  by the  Federal  Deposit  Insurance  Corporation  or any  other
     government agency.

**********END LEFT MARGIN CALLOUTS





Fees and Expenses

There are no sales loads or fees or other charges

     0    to establish a Giftrust account

     0    to reinvest dividends in additional shares

     0    for the  beneficiary  to exchange  into the  Investor  Class shares of
          other American Century funds once the Giftrust has matured

The  following  tables  describe the fees and  expenses  that a Giftrust may pay
during the life of the trust.

<TABLE>
Annual Fund Operating Expenses (expenses that are deducted from fund assets)
         Management Fee    Distribution and Service Other Expenses1     Total Annual Fund
                           (12b-1) Fees                                 Operating Expenses
- -------- ----------------- ------------------------ ------------------- ------------------------
<S>      <C>               <C>                      <C>                 <C>  
Giftrust 1.00%             None                     0.00%               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.
</TABLE>

Example of Hypothetical Fund Costs

The  examples in the table  below are  intended to help you compare the costs of
investing in a fund with those of other mutual funds. Assuming ...

o        you establish a $10,000 Giftrust account

o        the account earns a 5% return each year and

o        the same operating expenses shown above apply each year

 ... the cost of investing in the fund would be:

                1 Year     3 Years     5 Years     10 Years
- --------------- ---------- ----------- ----------- ------------
Giftrust        $102       $318        $551        $1,219
- --------------- ---------- ----------- ----------- ------------

Trust Expenses

Each Giftrust account for which the trustee files a tax return will be charged a
$10 fee to help  offset a  portion  of the cost of  preparing  the  return.  See
"Taxes" on page XX.

Additionally,  each maturing  Giftrust account  established after March 31, 1996
will be charged a $100  administrative  fee to help cover the costs  incurred by
the trustee as a result of the Giftrust reaching maturity.

**********LEFT MARGIN CALLOUTS

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

**********END LEFT MARGIN CALLOUTS



Detailed Information about the Fund

Giftrust

What is the fund's investment objective?

The fund seeks long-term capital growth. This is a fundamental policy and cannot
be changed without shareholder approval.

How does the fund pursue its investment objective?

The fund managers look for stocks of small- to medium-sized  companies that they
believe will  increase in value over time,  using a growth  investment  strategy
developed by American  Century.  This strategy looks for companies with earnings
and revenues that are not only growing, but growing at a successively faster, or
accelerating,  pace.  This strategy is based on the premise that,  over the long
term,  the stocks of companies  with  accelerating  earnings and revenues have a
greater-than-average chance to increase in value.

**********LEFT MARGIN CALLOUTS

*    Accelerating  growth is shown,  for example,  by growth that is faster this
     quarter than last or faster this year than the year before.

**********END LEFT MARGIN CALLOUTS

The managers use a bottom-up approach to select stocks to buy for the fund. That
means they first look for strong,  growing  companies to invest in,  rather than
simply  buying any  company in a growing  industry  or  sector.  Using  American
Century's extensive computer database,  the managers track financial information
for  thousands of companies to identify  trends in the  companies'  earnings and
revenues. This information is used to help the fund managers select or decide to
continue to hold the stocks of  companies  they  believe will be able to sustain
accelerating growth, and to sell stocks of companies whose growth begins to slow
down.

Although most of the fund's assets will be invested in U.S. companies,  there is
no limit on the amount of assets the fund can invest in foreign companies.  Most
of the fund's foreign investments are in companies located and doing business in
developed countries. Investments in foreign securities present some unique risks
that are more fully described in the fund's Statement of Additional Information.

The fund  managers do not attempt to time the  market.  Instead,  they intend to
keep the fund essentially fully invested in stocks regardless of the movement of
stock prices generally.  When the managers believe that it is prudent,  the fund
may  invest  a  portion  of  its  assets  in  convertible  securities,   foreign
securities, short-term instruments,  non-leveraged stock index futures contracts
and  other  similar  securities.  Stock  index  futures  contracts,  a  type  of
derivative  security,  can help the  fund's  cash  assets  remain  liquid  while
performing more like stocks. The fund has a policy governing stock index futures
and  similar  derivative  securities  to help  manage the risk of these types of
investments.  For example,  the managers  cannot  leverage the fund's  assets by
investing in a derivative  security.  A complete  description of the derivatives
policy is included in the Statement of Additional Information.

Additional  information about the fund'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 six-month period.  You may get these
reports at no cost by calling us.

What kinds of securities does the fund buy?

Giftrust will usually purchase common stocks of small- to medium-sized  U.S. and
foreign  companies,  but it can  purchase  other types of  securities,  as well.
Companies considered to be small generally have a market  capitalization of less
than  $1  billion,   and   medium-sized   companies   generally  have  a  market
capitalization  between $1 billion and $5  billion.  The fund also may invest in
domestic and foreign preferred stocks, convertible securities, equity equivalent
securities, notes, bonds and other debt securities. The fund limits its purchase
of debt securities to investment-grade obligations.

**********LEFT MARGIN CALLOUTS

*    Market  capitalization  means  the value of a  company,  as  determined  by
     multiplying the number of shares of stock it has outstanding by the stock's
     current market price per share.

**********END LEFT MARGIN CALLOUTS

What are the primary risks of investing in the fund?

o    The minimum term of a Giftrust is 10 years. Neither the person establishing
     the  Giftrust  nor the  beneficiary  of the trust may elect to withdraw the
     gift before the expiration of the term of the trust.

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

o    The fund manager may buy a large amount of a company's  stock quickly,  and
     often will  dispose of it quickly if the  company's  earnings  or  revenues
     decline.  While the managers  believe this  strategy  provides  substantial
     appreciation  potential over the long term, in the short term it can create
     a significant  amount of share price  volatility.  This  volatility  can be
     greater than that of the average stock fund.

o    Because  Giftrust  generally  invests in smaller  companies  than  American
     Century's similarly managed growth equity funds (such as Growth,  Ultra and
     Select),  it may be more volatile,  and subject to greater short-term risk,
     than those funds.  Smaller companies may have limited financial  resources,
     product lines and markets,  and their  securities may trade less frequently
     and in more limited  volumes than the  securities of larger  companies.  In
     addition,  smaller companies may have less publicly  available  information
     and, when available, it may be inaccurate or incomplete.

o    As with all funds,  at any given time, the value of your shares of Giftrust
     may be worth more or less than the price you paid.

o    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.

o    Although  the fund  managers  invest the fund's  assets  primarily  in U.S.
     stocks,  Giftrust can invest in  securities of foreign  companies.  Foreign
     securities  can  have  certain  unique  risks,  including  fluctuations  in
     currency  exchange  rates,  unstable  political  and  economic  structures,
     reduced  availability of public  information and lack of uniform  financial
     reporting  and  regulatory  practices  similar  to those that apply to U.S.
     issuers.  These  factors  make  investing in foreign  securities  generally
     riskier than  investing in U.S.  stocks.  To the extent the fund invests in
     foreign securities, the overall risk of the fund could be affected.

In  summary,  Giftrust  is  intended  for  investors  who want to give a gift to
another  individual,  but want that gift to have the potential to grow over time
(at least 10 years) in a fund that seeks  long-term  capital  growth  through an
aggressive equity fund. Investors wanting to make such a gift must be willing to
give up control over the gift forever and accept the risks  associated  with the
fund's investment strategy.




Fund Performance History

The  performance  information  on this page is designed to help you see how fund
returns can vary.  Keep in mind that past  performance  does not predict how the
fund will perform in the future.

Annual Total Returns

The following bar chart shows the  performance  of the fund's shares for each of
the last 10 calendar years. It indicates the volatility of the fund's historical
returns from year to year.

[GRAPH  DEPICTING  ANNUAL TOTAL RETURNS FOR GIFTRUST  DURING THE LAST TEN YEARS;
UPDATED FIGURES NOT AVAILABLE]

Highest and Lowest Quarterly Returns

The  highest  and lowest  returns of the  fund's  shares for a calendar  quarter
during the last 10 calendar  years are  provided  below to  indicate  the fund's
historical  short-term  volatility.  Shareholders should be aware, however, that
trusts investing in Giftrust have a long-term investment horizon and the fund is
not managed for short-term results.

[GRAPH  DEPICTING  HIGHEST AND LOWEST  RETURNS FOR GIFTRUST  DURING THE LAST TEN
YEARS; UPDATED FIGURES NOT AVAILABLE]

Average Annual Returns

The following  table shows the average  annual  returns of the fund's shares for
the periods indicated during the last 10 calendar years. The Russell 2000 Growth
Index is included as a benchmark for performance comparison. The benchmark is an
unmanaged index that has no operating costs.

                                 1 year        5 years          10 years
- ------------------------------------------------------------------------
Giftrust                         XXX%          XXX%             XXX%
Russell 2000 Growth Index        XXX%          XXX%             XXX%
- ------------------------------------------------------------------------


**********LEFT MARGIN CALLOUTS

The fund's total return for the period from  January 1, 1998,  to September  30,
1998, is:

Giftrust              X.XX%

*    For current  performance  information,  please call us at 1-800-345-2021 or
     visit American Century's Web site at www.americancentury.com.

**********END LEFT MARGIN CALLOUTS




Management

Who manages the fund?

The Board of Directors,  investment  advisor and fund  management  team play key
roles in the management of the fund.

The Board of Directors

The Board of Directors  oversees the  management  of the fund and meets at least
quarterly  to  review  reports  about  fund  operations.  Although  the Board of
Directors does not manage the fund, it has hired an investment advisor to do so.
More than half of the directors are independent of the fund's advisor,  that is,
they are not employed by and have no financial interest in the advisor.

The Investment Advisor

The fund's investment  advisor is American Century Investment  Management,  Inc.
The advisor has been  managing  mutual  funds  since 1958.  American  Century is
headquartered at 4500 Main Street, Kansas City, Missouri 64111.

The advisor is responsible  for managing the  investment  portfolios of the fund
and directing the purchase and sale of its  investment  securities.  The advisor
also arranges for transfer agency,  custody and all other services necessary for
the fund to operate.

For the services it provided to the fund during its most recent fiscal year, the
advisor received a unified  management fee of 1.0% the average net assets of the
fund. The amount of the management fee is calculated daily and paid monthly. Out
of that fee, the advisor paid all  expenses of managing and  operating  the fund
except brokerage expenses, taxes, interest, fees and expenses of the independent
directors (including legal counsel fees) and extraordinary expenses.




The Fund Management Team

The advisor uses teams of portfolio  managers,  assistant portfolio managers and
analysts to manage the fund. Teams meet regularly to review  portfolio  holdings
and to discuss purchase and sale activity.  Team members buy and sell securities
for a fund as they  see fit,  guided  by the  fund's  investment  objective  and
strategy.

Portfolio Manager members of the investment team are identified below:

Christopher K. Boyd

Mr. Boyd,  Vice President and Portfolio  Manager,  has been a member of the team
that manages Giftrust since rejoining American Century in January 1998. With the
exception of 1997, he has been with American Century since March 1988 and served
as a Portfolio  Manager  since  December  1992.  During 1997,  he was in private
practice  as an  investment  advisor.  He has a  bachelor  of  science  from the
University  of  Kansas  and an MBA from  Dartmouth  College.  He is a  Chartered
Financial Analyst.

John D. Seitzer

Mr. Seitzer, Vice President and Portfolio Manager, has been a member of the team
that manages Giftrust since the fund's inception.  He joined American Century in
June 1993 as an Investment Analyst and was promoted to Portfolio Manager in July
1996. He has a B.S. in accounting  and finance from Kansas State  University and
an MBA in finance from Indiana  University.  He is a Chartered Financial Analyst
and a Certified Public Accountant.

**********LEFT MARGIN CALLOUTS

*    Code of Ethics

     American Century has a Code of Ethics designed to ensure that the interests
     of fund shareholders come before the interests of the people who manage the
     fund.  Among  other  provisions,  the Code of  Ethics  prohibits  portfolio
     managers  and other  investment  personnel  from  buying  securities  in an
     initial public offering or from profiting from the purchase and sale of the
     same  security  within 60 calendar  days.  In addition,  the Code of Ethics
     requires  portfolio managers and other employees with access to information
     about the purchase or sale of  securities  by the funds to obtain  approval
     before executing permitted personal trades.

**********END LEFT MARGIN CALLOUTS




Fundamental Investment Policies

Fundamental  investment  policies  contained  in  the  Statement  of  Additional
Information and the investment objectives of the fund may not be changed without
a shareholder  vote.  The Board of Directors  may change any other  policies and
investment strategies.

Year 2000 Issues

Many of the world's  computer  systems  currently  cannot properly  recognize or
process date-sensitive information relating to the Year 2000 and beyond. Because
this may impact the computer systems of various American  Century-affiliated and
external service providers for the fund,  American Century formally  initiated a
Year 2000  readiness  project in July 1997.  It  involves a team of  information
technology  professionals  assisted  by  outside  consultants  and  guided  by a
senior-level steering committee.  The team's goal is to assess the impact of the
Year 2000 on  American  Century's  systems,  renovate  or  replace  noncompliant
critical systems and test those systems. In addition,  the team has been working
to gather  information  about the Year 2000  efforts of the fund's  other  major
service providers.  Although American Century believes its critical systems will
function  properly in the Year 2000, this is not  guaranteed.  If the efforts of
American  Century or its external  service  providers  are not  successful,  the
fund's  business,  particularly  the provision of shareholder  services,  may be
hampered.

In  addition,  the  issuers  of  securities  the funds own could  have Year 2000
computer  problems.  These problems could  negatively  affect the value of their
securities, which, in turn, could impact the fund's performance. The advisor has
established a process to gather publicly  available  information  about the Year
2000  readiness  of these  issuers.  However,  this  process may not uncover all
relevant  information,  and the  information  gathered  may not be complete  and
accurate.  Moreover, an issuer's Year 2000 readiness is only one of many factors
the fund  managers  may consider  when making  investment  decisions,  and other
factors may receive greater weight.




         How to Open and Make Additional Investments in a Giftrust Account

Conducting Business in Writing

You must conduct  business in writing on a Giftrust account unless you establish
telephone  services.  Please  remember that the person  establishing  a Giftrust
account may make additional  gifts before it matures,  but gives up the right to
sell or exchange shares.  If you choose to do business in writing only, you must
provide written instructions to make additional gifts into the Giftrust account.
All  account  owners  must  sign  transaction   instructions   (with  signatures
guaranteed for  redemptions in excess of $100,000).  If you want to add services
later, you can complete an Investor Service Options form.

<TABLE>
<CAPTION>
- ---------------------------------------------------------------------------------------------------------------------------------
- ---------------------------------- -------------------------------------------- -------------------------------------------------
<S>                               <C>                                           <C>
By telephone                       Open an account                              Make additional gifts
Investor Services                  The initial Giftrust account must            Call us or use our Automated Information Line
1-800-345-2021                     be established in writing.  Call us          if you have authorized us to invest from your
7 a.m. to 7 p.m., Central time     for a Giftrust Kit.                          bank account.

Automated Information Line
1-800-345-8765
24 hours a day
seven days a week
- ---------------------------------- -------------------------------------------- -------------------------------------------------
- ---------------------------------- -------------------------------------------- -------------------------------------------------
By mail or fax                     Open an account                              Make additional gifts
PO Box 419200                      Send a signed and completed                  Send your check or money order for at least $50
Kansas City, MO 64141-6200         application, Giftrust Agreement and          with an investment slip or $250 without an
                                   check or money order payable to              investment slip. If you don't have an
Fax 816-340-7962                   American Century Investments.                investment slip, include your name, address and
                                                                                account number on your check or money order.
                                   Exchange shares Send us written  instructions
                                   to exchange your shares from another American
                                   Century account into the Giftrust account


- ---------------------------------- -------------------------------------------- -------------------------------------------------
- ---------------------------------- -------------------------------------------- -------------------------------------------------
By wire                            Open an account                              Make additional investments
                                   Send a signed and completed                  Follow the wire instructions provided in the
                                   application and Giftrust Agreement           Open an account section
                                   Give your bank the following
                                   information:

                                   o  Our bank information
                                            Commerce Bank N.A.
                                            Routing No. 101000019
                                            ACMF Account No. 2804918
                                   o  The fund name
                                   o  Your American Century account number
                                   o  Your name
- ---------------------------------- -------------------------------------------- -------------------------------------------------
- ---------------------------------- -------------------------------------------- -------------------------------------------------
Automatically                      Open an account                              Make additional investments
                                   Not available.                               Select "Establish Automatic Investments" on
                                                                                your application to make automatic gifts of
                                   Exchange shares                              shares on a regular basis. You must invest at
                                   Send us written instructions to set          least $600 per year per account.
                                   up an automatic exchange of shares
                                   from another American Century
                                   account to the Giftrust account.


- ---------------------------------- -------------------------------------------- -------------------------------------------------
- ---------------------------------- ----------------------------------------------------------------------------------------------
In person                          If you prefer to handle your  transactions in person,  visit one of our Investor
                                   Centers and a  representative  can help you open an account and make  additional
                                   investments. Here are the Investor Centers you can visit.                       
                                   


                                   4500 Main Street                        4917 Town Center Dr.
                                   Kansas City, Missouri                   Leawood, Kansas

                                   1665 Charleston Road                    2000 S. Colorado Blvd.
                                   Mountain View, California               Denver, Colorado
- ---------------------------------- ----------------------------------------------------------------------------------------------
- ---------------------------------- ----------------------------------------------------------------------------------------------


Managing the Account of a Matured Giftrust

The beneficiary  will be notified when the Giftrust  reaches  maturity.  At that
time, the Giftrust shares will be transferred to a Giftrust account  established
in the sole name and Social Security number of the beneficiary.  The beneficiary
will decide to do business either in writing only or with telephone  services by
phone, online and wire. The beneficiary cannot make additional  investments into
the Giftrust account.

If in writing  only  service  is  established  once the  Giftrust  matures,  the
beneficiary  will need to provide written  instructions in order to exchange and
redeem Giftrust shares.  If the beneficiary wants to add services later, you can
complete an Investor Service Options form.


- -------------------------------------------------------------------------------------------------------------------------------
- ---------------------------------- ----------------------------------------------- ----------------------------------------------
By telephone                       Exchange shares                                 Sell shares
Investor Services                  Call us or use our Automated                    Call an Investor Services Representative.
1-800-345-2021                     Information Line if you have
7 a.m. to 7 p.m., Central time     authorized us to accept telephone
                                   instructions.
Automated Information Line
1-800-345-8765
24 hours a day
seven days a week
- ---------------------------------- ----------------------------------------------- ----------------------------------------------
- ---------------------------------- ----------------------------------------------- ----------------------------------------------
By mail or fax                     Exchange shares                                 Sell shares
PO Box 419200                      Send us written instructions to                 Send us written instructions to sell shares
Kansas City, MO 64141-6200         exchange shares from the Giftrust               or send us a redemption form. Call an
                                   account to another American Century             Investor Services Representative to request
Fax 816-340-7962                   fund.                                           a form.
- ---------------------------------- ----------------------------------------------- ----------------------------------------------
- ---------------------------------- ----------------------------------------------- ----------------------------------------------
Online                             Exchange shares                                 Sell shares
www.americancentury.com            Exchange shares into another American           Not available.
                                   Century account.


- ---------------------------------- ----------------------------------------------- ----------------------------------------------
- ---------------------------------- ----------------------------------------------- ----------------------------------------------
By wire                            Exchange shares                                 Sell shares
                                   Not available.                                  You can receive redemption proceeds
                                                                                   by wire  or electronic transfer.
                                                                                   (This service is not available 
                                                                                   if  you  have   chosen  to  do
                                                                                   business in writing only.)    
                                                                                   
     
*    Please  remember  that if you  request  redemptions  by  wire,  $10 will be
     deducted from the amount wired. Your bank also may charge a fee.

- ---------------------------------- ----------------------------------------------- ----------------------------------------------
- ---------------------------------- ----------------------------------------------- ----------------------------------------------
Automatically                      Exchange shares                                 Sell shares
                                   Send us written instructions to set             If you  have at  least  $10,000  in
                                   up an  automatic  exchange  of your             your    account,     sell    shares
                                   shares from the Giftrust account to             automatically    by    establishing
                                   another American Century account.               Check-A-Month      or     Automatic
                                                                                   Redemption.                        
                                                                                   
- ---------------------------------- ----------------------------------------------- ----------------------------------------------
- ---------------------------------- ----------------------------------------------- ----------------------------------------------
In person                          If you prefer to handle your  transactions in person,  visit one of our Investor
                                   Centers and a representative can help you sell or exchange shares.  Here are the
                                   Investor Centers you can visit                                                  
                                   

                                   4500 Main Street                        4917 Town Center Dr.
                                   Kansas City, Missouri                   Leawood, Kansas

                                   1665 Charleston Road                    2000 S. Colorado Blvd.
                                   Mountain View, California               Denver, Colorado
- ---------------------------------- ----------------------------------------------- ----------------------------------------------
- ---------------------------------------------------------------------------------------------------------------------------------
</TABLE>





Minimum Investment Amounts

Your initial gift to a Giftrust  account must be at least $500.  All  additional
gifts must be at least $50 or more.

A Note About Mailings to Shareholders

To reduce expenses and demonstrate respect for our environment,  we will deliver
most financial  reports,  prospectuses and account statements to households in a
single  envelope,  even if the accounts are registered  under  different  names.
These will be sent to the  beneficiary's  address.  If you would like additional
copies of  financial  reports and  prospectuses  or separate  mailing of account
statements, please call us.




Share Price and Distributions

Share Price

We determine the net asset value of the fund as of the close of regular  trading
on the New York Stock  Exchange  (usually 4 p.m.  Eastern  time) on each day the
Exchange is open. On days when the Exchange is not open, we do not calculate the
net asset value.  The net asset value of the fund share is the current  value of
its  investments,  minus any  liabilities,  divided by the number of fund shares
outstanding.

If current prices of securities  owned by a fund are not readily  available from
an independent  pricing  service,  the advisor may determine their fair value in
accordance with procedures adopted by the fund's Board of Directors.  Trading of
securities  in foreign  markets may not take place on every day the  Exchange is
open.  Also,  trading in some  foreign  markets  may take place on  weekends  or
holidays when the fund's net asset value is not calculated. So, the value of the
fund's  portfolio  may be  affected  on days when  shares  of the fund  can't be
purchased or redeemed.

We will price your gift, or an exchange or redemption by the beneficiary, at the
net asset value next determined after we receive the transaction request in good
order.

Distributions

Federal tax laws require the fund to make  distributions  to its shareholders in
order  to  quality  as a  "regulated  investment  company."  Qualification  as a
regulated investment company means that the fund will not be subject to state or
federal income tax on amounts distributed.  The distributions  generally consist
of dividends and interest  received,  as well as capital  gains  realized on the
sale of investment securities.  Giftrust generally pays distributions of capital
gains,  if any,  once a year,  in  December.  The fund may  make  more  frequent
distributions  if necessary  to comply with  Internal  Revenue Code  provisions.
Distributions are required to be reinvested automatically in additional shares.

**********LEFT MARGIN CALLOUTS

The net asset value of the fund is the price of its shares.

Capital gains is the increase in value of a capital asset,  such as stock,  from
the time it is  purchased.  Tax becomes  due on capital  gains once the asset is
sold.

**********END LEFT MARGIN CALLOUTS




Taxes

The  following  is only a  summary  of the tax law  effects  of  establishing  a
Giftrust  account.  The tax laws  applicable  to  trusts  in  general  are quite
complex.  You should  consider  consulting  your tax advisor or attorney  before
opening a Giftrust  account.  Distributions,  which may consist of dividend  and
interest  income the fund has  received or capital  gains it has  generated,  or
both, and by sales of fund shares by beneficiaries after the net asset value has
increased or decreased will cause a tax to be owed by the Trust.

Taxability of Distributions

Distributions   of  income  are  taxable  to  the  trust  as  ordinary   income.
Distribution  of capital gains are classified  either as short term or long term
and are taxed as follows:

<TABLE>
Type of Distribution                 Tax rate for 15% Bracket         Tax rate for 28% Bracket or above
- ------------------------------- ------------------------------------ -------------------------------------
<S>                             <C>                                  <C>
Short-term capital gains               Ordinary income rate                  Ordinary income rate
Long-term capital gains                         10%                                  20%
</TABLE>

The tax status of any  distribution  of capital  gains is determined by how long
the fund  held  the  underlying  security  that  was  sold,  not by how long the
Giftrust  has been in  existence.  No  federal  income tax is due from the trust
unless its income exceeds $100 in a year.  Distributions  also may be subject to
state and local taxes.  The trustee  files all state and federal tax returns and
pays the taxes out of the assets of the trust. A $10 fee is charged to the trust
in each year a tax return is filed.

Taxes on Transactions

Redemptions  by  beneficiaries  once  the  Giftrust  has  matured  --  including
exchanges to other  American  Century funds -- are subject to capital gains tax.
Based on current tax law,  which is subject to change,  gains or losses would be
treated as long-term  capital gains or losses and taxed at either the 10% or 20%
tax rate.

Gift Taxes

Establishing a Giftrust (and making future  contributions)  is considered a gift
of a future interest under the federal income tax code. That means the gift does
not quality for the annual gift tax exclusion of $10,000  (indexed for inflation
after  1998).  If you give a  Giftrust,  you must file a United  States Gift Tax
Return (Form 709). If you make  additional  investments  in subsequent  years, a
Gift Tax Return must be filed for each year's gift. No gift tax is payable until
your  cumulative  lifetime  gifts exceed the  exemption  equivalent  of $625,000
(beginning in 1998 and  increasing to $1 million in 2006).  Each gift is applied
against the  exemption  equivalent  that would  otherwise  be  available  in the
future.

**********LEFT MARGIN CALLOUTS

*    Buying a Dividend

     Purchasing  fund shares in a taxable  account shortly before a distribution
     is sometimes  known as "buying a dividend." In taxable  accounts,  you must
     pay income taxes on the  distribution  whether you take the distribution in
     cash or  reinvest  it.  In  addition,  you  will  have to pay  taxes on the
     distribution whether the value of your investment  decreased,  increased or
     remained  the same after you bought the fund  shares.  The risk in buying a
     dividend is that a fund's  portfolio may build up taxable gains  throughout
     the period covered by a  distribution,  as securities are sold at a profit.
     We distribute those gains to you, after subtracting any losses, even if you
     did not own the shares when the gains occurred. Thus if you buy a dividend,
     you incur the full tax liability of the  distribution  period,  but you may
     not enjoy the full benefit of the gains realized in the fund's portfolio.

**********END LEFT MARGIN CALLOUTS




Financial Highlights

Understanding the Financial Highlights

This table  itemizes what  contributed  to the changes in share price during the
period,  and compares  this to changes over the last five fiscal years (or less,
if the share class is not five years old).

On a per-share basis, it includes:

o        share price at the beginning of the period
o        investment income and capital gains or losses
o        distributions of income and capital gains paid to shareholders
o        share price at the end of the period

It also includes some key statistics for the period:

o    Total Return--the  overall  percentage of return of the fund,  assuming the
     reinvestment of all distributions

o    Expense Ratio--operating expenses as a percentage of average net assets

o    Net Income  Ratio--net  investment  income as a  percentage  of average net
     assets

o    Portfolio  Turnover--the  percentage  of  the  fund's  buying  and  selling
     activity

The Financial  Highlights  for the fiscal years ended October 31, 1997 and 1998,
have been audited by Deloitte & Touche LLP, independent  auditors.  Their report
is in the fund's annual  report,  which is  incorporated  by reference  into the
Statement of Additional Information, and is available upon request. Prior years'
information was audited by other independent auditors, whose report thereon also
is incorporated by reference into the Statement of Additional Information.




<TABLE>
<CAPTION>
Giftrust

                                                           1998          1997           1996          1995          1994
PER-SHARE DATA
<S>                                                   <C>             <C>            <C>             <C>          <C>
Net Asset Value, Beginning of Year                        $XX.XX        $XX.XX         $XX.XX        $XX.XX        $XX.XX
                                                       ------------- -------------- ------------- ------------- --------------
Income from Investment Operations
   Net Investment Income (dividends)
   Net Realized and Unrealized Gain (Loss) on
   Investment Transactions
                                                       ------------- -------------- ------------- ------------- --------------
   Total From Investment Operations
                                                       ------------- -------------- ------------- ------------- --------------
Less Distributions
   From Net Investment Income (dividends)
                                                       ============= ============== ============= ============= ==============
Net Asset Value, End of Year
                                                       ------------- -------------- ------------- ------------- --------------
Total Return(1)

RATIOS/SUPPLEMENTAL DATA

Ratio of Operating Expenses to Average Net Assets

Ratio of Net Investment Income to Average Net Assets

Net Assets, End of Year (in thousands)
</TABLE>



24       American Century Investments                             1-800-345-2021


At Your Service

Surf the Net

The next time you're  surfing the Net,  stop by American  Century's  Web site at
www.americancentury.com.  You can  view  transactions  and  check  your  account
balances.  You can also sign up to receive annual  updates to your  prospectuses
and financial reports via the Net instead of through the mail.

Expand your investment options with American Century Brokerage

If  you're  looking  for a wide  range  of  investment  options  - from  trading
individual  securities  to  purchasing  mutual  funds  offered  by  hundreds  of
companies  - look to  American  Century  Brokerage.  With  this  new  investment
service, you can take advantage of 24-hour trading on our Web site or TeleSelect
automated  telephone  service.  Or, if you prefer,  you can do business directly
with a Brokerage Associate.

With service features including a Gold MasterCard(R)  ATM/Debit Card,  unlimited
CheckWriting  and cost basis reporting (all available with the American  Century
Brokerage Access  AccountSM),  our brokerage  service can simplify your life now
while you  prepare  financially  for the years to come.  For  information  about
opening a brokerage account, please call an American Century Brokerage Associate
at 1-888-345-2071.

Check out our library

Are you looking for additional information on bond basics? Or, are you trying to
decide if municipal bonds have a place in your portfolio? Perhaps you would like
to test your knowledge of bonds and how they work. These are subjects covered in
our Financial FYI library that are  available to you.  Financial  FYI, a growing
library of one-page  resources,  clearly and quickly explains various  financial
subjects to help you make informed decisions.  To request one of these articles,
call an Investor Services Representative.



More information about the funds is contained in these documents:

Annual and Semiannual Reports.  These reports contain more information about the
fund's  investments  and the market  conditions and investment  strategies  that
significantly  affected the fund's  performance during the most recent six-month
fiscal period.

Statement of Additional  Information.  The SAI contains a more  detailed,  legal
description  of the funds'  operations,  investment  restrictions,  policies and
practices. The SAI is incorporated by reference into this Prospectus. This means
that it is legally part of this Prospectus, even if you don't request a copy.

You also can get information about the funds (including the SAI) from the SEC.

v    In person.            SEC Public Reference Room
                           Washington, D.C.
                           Call 1-800-SEC-0330 for location and hours.

v    On the internet.      www.sec.gov.

v    By mail.              Public Reference Section
                           Washington, D.C.
                           20549-6009
                           The SEC will charge a fee for  copying the  documents
                           you request.


American Century Investments
P.O. Box 419200
Kansas City, Missouri 64141-6200

Investor Services
1-800-345-2021 or 816-531-5575

Automated Information Line
1-800-345-8765

Fax
816-340-7962

www.americancentury.com

Telecommunications Device for the Deaf
1-800-634-4113 or 816-444-3485

Corporate, Not-for-Profit, Keogh,
SEP-, SARSEP-, SIMPLE-IRA and 403(b) Services
1-800-345-3533

Investment Company Act File No. 811-0816
<PAGE>
[american century logo(reg.sm)]
American
Century

Prospectus

January 29, 1999
- --------------------------------------------------------------------------------

AMERICAN CENTURY

High-Yield

Investor Class

The  Securities and Exchange  Commission  has not approved or disapproved  these
securities or determined if this Prospectus is accurate or complete.  Anyone who
tells you otherwise is committing a crime.

Distributed by Funds Distributor, Inc.




Reading a prospectus doesn't have to be a chore. We've done the hard work so you
can focus on what's  important--learning  about the fund. Take a look inside and
you'll see this  prospectus  is  different  from  others.  It takes a  clear-cut
approach to fund information.

Here's what you'll find:

o    The fund's primary investments and risks

o    A description of who may or may not want to invest in the fund

o    Fund performance,  including returns for each year, best and worst quarters
     and average annual returns compared to the fund's benchmarks

o    An overview of ways to best manage your accounts

o    Helpful tips and definitions of key investment terms

Whether  you're a current  investor or  investing  in mutual funds for the first
time, this prospectus  will give you a clear  understanding  of the fund. If you
have questions,  our Investor Services Representatives are available weekdays, 7
a.m. to 7 p.m.  Central time. Our toll-free  number is  1-800-345-2021.  We look
forward to helping you achieve your financial goals.

                                      Sincerely,


                                      Mark Killen
                                      Senior Vice President
                                      American Century Investment Services, Inc.






Table of Contents

An Overview of the Fund................................................2

Fees and Expenses......................................................3

Detailed Information about the Fund....................................4

Basics of Fixed Income Investing.......................................6

Management.............................................................8

Investing with American Century.......................................12

Share Price and Distributions.........................................15

Taxes.................................................................16

Multiple Class Information............................................17

Financial Highlights..................................................18

At Your Service.......................................................18

Fund Reference
                     Fund Code         Ticker          Newspaper Listing
- --------------------------------------------------------------------------------
High-Yield           101               ABHIX           HighYld
- --------------------------------------------------------------------------------

**********LEFT MARGIN CALLOUTS

Throughout  this  book  you'll  find  definitions  of key  investment  terms and
phrases.  When you see a word printed in green italics,  look for its definition
in the left margin.

*........This symbol highlights special information and helpful tips.

**********END LEFT MARGIN CALLOUTS

An Overview of the Fund

What is the fund's investment goals?

This fund seeks high current income.  As a secondary  objective,  the fund seeks
capital  appreciation,  but only when consistent  with its primary  objective of
maximizing current income.

What are the fund's primary investment strategies and principal risks?

The fund invests primarily in a diversified  portfolio of lower-rated  corporate
debt  securities,  which are subject to greater credit risk and consequently pay
higher  yields.  Securities  of this  type are  subject  to  substantial  risks,
including

o        credit risk
o        liquidity risk
o        interest rate risk

Additional  important  information  about the fund's  investment  strategies and
risks begin on page 4.

**********LEFT MARGIN CALLOUT

Debt  securities  means bonds,  notes and  debentures.  Debt securities also are
sometimes called fixed income securities.

**********END LEFT MARGIN CALLOUT

Who may want to invest in the fund?

The funds may be a good investment if you are

0    seeking high current income with the potential for capital gains

0    investing through an IRA or other tax-advantaged retirement plan

Who may not want to invest in the fund?

The fund may not be a good investment if you are

0    uncomfortable with the risk of investing in lower-rated debt securities

0    looking for the added security of FDIC insurance

**********LEFT MARGIN CALLOUTS

*    An  investment  in the fund is not a bank  deposit  and is not  insured  or
     guaranteed  by the  Federal  Deposit  Insurance  Corporation  or any  other
     government agency.

**********END LEFT MARGIN CALLOUTS




Fees and Expenses

There are no sales loads or fees or other charges

0    to buy fund shares directly from American Century

0    to reinvest dividends in additional shares

0    to exchange into the Investor Class shares of other American Century funds

The following  tables describe the fees and expenses that you may pay if you buy
and hold shares of the fund.

<TABLE>
Annual Operating Expenses (expenses that are deducted from fund assets)
                Management Fee    Distribution and          Other Expenses1   Total Annual Fund
                                  Service (12b-1) Fees                        Operating Expenses
- --------------- ----------------- ------------------------- ----------------- ----------------------
<S>             <C>                                         <C>               <C>  
High-Yield      0.90%             None                      0.00%             0.90%
- --------------- ----------------- ------------------------- ----------------- ----------------------

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.
</TABLE>

Examples of Hypothetical Fund Costs

The  examples in the table  below are  intended to help you compare the costs of
investing in the fund with those of other mutual funds. Assuming you. . .

o        invest $10,000 in the fund

o        redeem all of your shares at the end of the periods shown below

o        earn a 5% return each year and

o        incur the same operating expenses shown above

 . . . your cost of investing in the fund would be:
                1 Year       3 Years       5 Years      10 Years
- --------------- ------------ ------------- ------------ ------------
High-Yield      $92          $286          $497         $1,104
- --------------- ------------ ------------- ------------ ------------

**********LEFT MARGIN CALLOUTS

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

**********END LEFT MARGIN CALLOUTS



Detailed Information About the Fund

High-Yield

What is the fund's investment objective?

The fund seeks high current  income by investing in a  diversified  portfolio of
high-yielding corporate bonds and other debt securities.

How does the fund pursue its investment objective?

The fund invests  primarily in high-yield  corporate  debt  securities,  with an
emphasis on securities that are rated below investment grade.

**********LEFT MARTIN CALLOUT

*    A  high-yield  security  is one that has been  rated  below one of the four
     highest   categories  by  a  nationally   recognized   statistical   rating
     organization,  or  determined  by the  investment  advisor to be of similar
     quality.  A discussion of the  authorized  credit quality range of the fund
     and credit risk starts on page XX.

**********END LEFT MARTIN CALLOUT

Under normal market conditions,  the fund managers will maintain at least 80% of
the  fund's  total  assets in  high-yielding  corporate  bonds  and  other  debt
instruments  (including income producing convertible and preferred  securities).
The remaining  assets may be invested in common  stocks or other  equity-related
securities.  The fund buys securities that are below investment grade, including
so-called junk bonds.  Issuers of these  securities  often have short  financial
histories or have questionable credit.

Up to 40% of the fund's total assets may be invested in fixed-income obligations
of foreign issuers.  Under normal market  conditions,  the fund may invest up to
20% of its  assets,  and for  temporary  defensive  purposes,  up to 100% of its
assets, in short-term money market instruments and U.S. government securities.

The fund has no  average  maturity  limitations,  but it  typically  invests  in
intermediate- and long-term bonds.

What are the primary risks of investing in the fund?

The fund's  investments  often have high  credit  risk,  which helps it pursue a
higher yield than more conservatively  managed bond funds. Issuers of high-yield
securities are more vulnerable to real or perceived economic changes (such as an
economic  downturn or a prolonged  period of rising interest  rates),  political
changes  or adverse  developments  specific  to the  issuer.  Adverse  economic,
political  and  other  developments  may be more  likely  to cause an  issuer of
low-quality bonds to default on its obligation to pay the interest and principal
due under its securities.

The market for  lower-quality  debt securities is generally less liquid than the
market  for   higher-quality   securities.   Adverse   publicity   and  investor
perceptions,  as well as new and proposed laws, also may have a greater negative
impact on the market for lower-quality securities.

Because the fund typically invests in intermediate-term bonds, the interest rate
risk for  High-Yield  is higher  than for funds with  shorter  weighted  average
maturities,  such as money market and short-term bond funds.  See the discussion
on page [xx] for more information  about the affects of changing  interest rates
on the fund's portfolio.

High-Yield  can  invest  up to  40% of  its  assets  in  securities  of  foreign
companies.   Foreign  securities  can  have  certain  unique  risks,   including
fluctuations  in  currency  exchange  rates,  unstable  political  and  economic
structures,  reduced  availability of public information and the lack of uniform
financial reporting and regulatory practices similar to those that apply to U.S.
issuers.

The fund's  share  value will  fluctuate.  In  general,  funds that have  higher
potential  income  have a higher  potential  loss.  If you sell your shares when
their value is less than the price you paid, you will lose money.




Fund Performance History

The  performance  information  on this page is designed to help you see how fund
returns can vary.  Keep in mind that past  performance  does not predict how the
fund will perform in the future.

Annual Total Returns

The  following  bar chart shows the  performance  of the fund's  Investor  Class
shares for each full year in the life of the fund. It indicates  the  volatility
of the fund's historical returns from year to year.

[GRAPH DEPICTING  ANNUAL TOTAL RETURNS FOR HIGH-YIELD  SINCE INCEPTION;  UPDATED
FIGURES NOT AVAILABLE]

Highest and Lowest Quarterly Returns

The highest and lowest returns of the fund's Investor Class shares for a quarter
during the life of the fund are provided below to indicate the fund's historical
short-term volatility.

[GRAPH DEPICTING  HIGHEST AND LOWEST QUARTERLY  RETURNS FOR HIGH-YIELD;  UPDATED
FIGURES NOT AVAILABLE]

Average Annual Returns

The  following  table shows the average  annual  returns of the fund's  Investor
Class shares for the periods  indicated  during the last 10 calendar years.  The
DLJ High Yield  Index is  included  as a  benchmark  for  long-term  performance
comparison.
The benchmark is an unmanaged index that has no operating costs.

                           1 year        Life of Fund*
- -------------------------------------------------------------
High Yield                 ____%         ____%
DLJ High Yield Index       X.XX%         X.XX%

*  The inception date for the fund is September 30, 1997.

**********LEFT MARGIN CALLOUTS

The fund's total  returns for the period from January 1, 1998,  to September 30,
1998, are

High-Yield                    X.XX%

*    For current performance  information,  including yields,  please call us at
     1-800-345-2021    or    visit    American    Century's    Web    site    at
     www.americancentury.com.

**********END LEFT MARGIN CALLOUTS




Basics of Fixed Income Investing

Debt Securities

When a fund buys a debt security,  which is also called a fixed income security,
it is  essentially  lending money to the issuer of the security.  Notes,  bonds,
commercial paper and Treasury bills are examples of debt  securities.  After the
issuer  first  sells  the  debt  security,  it may be  bought  and sold by other
investors.  The price of the  security  may rise or fall based on many  factors,
including changes in interest rates, inflation and liquidity.

The fund managers decide which debt securities to buy and sell by

0    identifying securities that satisfy the fund's credit quality requirements

0    evaluating  the  current  economic  conditions  and  assessing  the risk of
     inflation

0    evaluating  special  features of the securities  that may make them more or
     less attractive

Weighted Average Maturity

Like most loans,  debt  securities  eventually must be repaid (or refinanced) at
some date.  This date is called the maturity  date. The number of days left to a
debt  security's  maturity date is called the remaining  maturity.  The longer a
debt  security's  remaining  maturity,  the more  sensitive  it is to changes in
interest rates.

Because a bond fund will own many debt  securities,  the advisor  calculates the
average of the remaining  maturities of all of the debt securities the fund owns
to evaluate the interest rate sensitivity of the entire portfolio.  This average
is  weighted  according  to the size of the fund's  individual  holdings  and is
called weighted average maturity. The following chart shows how an advisor would
calculate  the  weighted  average  maturity  for a fund that owned only two debt
securities.

<TABLE>
                       Amount of Security Owned       Percent of Portfolio   Remaining Maturity      Weighted Maturity
- ---------------------- ------------------------------ ---------------------- ----------------------- ----------------------
<S>                    <C>                            <C>                    <C>                     <C>     
Debt Security A        $100,000                       25%                    1,000 days              250 days
Debt Security B        $300,000                       75%                    10,000 days             7500 days
Weighted Average Maturity                                                                            7750 days
</TABLE>

Types of Risk

The basic types of risk that fixed income securities face are described below.

Interest Rate Risk

Generally,  interest  rates and the prices of debt  securities  move in opposite
directions.  So when  interest  rates fall,  the prices of most debt  securities
rise;  when interest rates rise,  prices fall.  Because the fund invests in debt
securities, changes in interest rates will affect the fund's performance.

The degree to which interest rate changes affect the fund's  performance  varies
and is related to the weighted average  maturity of the fund. For example,  when
interest  rates rise, you can expect the share value of a long-term bond fund to
fall more than that of a short-term  bond fund. When rates fall, the opposite is
true. This sensitivity to interest rate changes is called interest rate risk.

***********LEFT MARGIN CALLOUTS

*    Weighted  average  maturity is a tool that the advisor uses to  approximate
     the remaining maturity of a fund's investment portfolio.

*    The longer a fund's weighted average maturity,  the more sensitive it is to
     changes in interest rates.

***********END LEFT MARGIN CALLOUTS




When interest rates change, longer maturity bonds experience a greater change in
price.  The following  table shows the effect of a 1% increase in interest rates
on the price of 7% coupon bonds of differing maturities:

Remaining Maturity    Current Price        Price after 1%        Change in price
                                                 increase
- ------------------- ---------------- --------------------- ---------------------
1 year                      $100.00                $99.06                 -0.94%
3 years                      100.00                 97.38                 -2.62%
10 years                     100.00                 93.20                 -6.80%
30 years                     100.00                 88.69                -11.31%

Credit Risk

Credit risk is the risk that an obligation won't be paid and a loss will result.
A high  credit  rating  indicates  a high  degree of  confidence  by the ratings
organization  that  the  issuer  will  be able to  withstand  adverse  business,
financial or economic  conditions  and be able to make  interest  and  principal
payments on time. Conversely,  a lower credit rating indicates a greater risk of
nonpayment.  A lower rating may also  indicate that the issuer has a more senior
series of debt  securities,  which  means that if the  issuer  has  difficulties
making  its  payments,  the  more  senior  series  of debt is  first in line for
payment.

It's not as simple as buying the highest rated debt securities,  though.  Higher
credit ratings  usually mean lower interest  rates,  so investors often purchase
securities that aren't the  highest-rated to increase return. If a fund, such as
High-Yield,  purchases  lower-rated  securities  in an effort to achieve  higher
yields, it assumes additional credit risk.

The following  chart shows the  authorized  credit  quality  ranges for the fund
offered by this Prospectus.


- ------ ---------- ----- --------- --------- ----- ------- ------- ------ -------
             A-1             A-2       A-3
             P-1             P-2       P-3
           MIG-1           MIG-2     MIG-3
            SP-1            SP-2      SP-3
 AAA          AA   A         BBB        BB   B     CCC      CC      C      D
- ----------------------- --------------------------------- ----------------------
         XX                            YY                          XX
- ----------------------- --------------------------------- ----------------------

XX   Denotes authorized quality

YY   Denotes expected quality range of at least 80% of total assets of the fund


Liquidity Risk

Debt securities can become  difficult to sell for a variety of reasons,  such as
lack of an active trading market.  When a fund's investments become difficult to
sell, it is said to have a problem with  liquidity.  The chance that a fund will
have liquidity issues is called liquidity risk.

Inflation Risk

The safest investments usually have the lowest potential income and performance.
There  is  a  risk,   then,  that  returns  from  the  investment  may  fail  to
significantly  outpace  inflation.  Even if the value of your investment has not
gone  down,  your  money  will  not be  worth  as much as if  there  had been no
inflation.  Your after-inflation  return may be quite small. This risk is called
inflation risk.

**********LEFT MARGIN CALLOUTS

*    Credit quality may be lower when the issuer has

     o    a high debt level
     o    a short operating history
     o    a senior level of debt
     o    a difficult competitive environment

*    The Statement of Additional  Information provides a detailed description of
     these securities ratings.

**********END LEFT MARGIN CALLOUTS




Management

Who manages the funds?

The Board of Directors,  investment  advisor and fund  management  team play key
roles in the management of the funds.

The Board of Directors

The Board of Directors  oversees the  management of the funds and meets at least
quarterly  to  review  reports  about  fund  operations.  Although  the Board of
Directors  does not manage the funds,  it has hired an investment  advisor to do
so. More than half of the Directors are independent of the funds' advisor,  that
is, they are not employed by and have no financial interest in the advisor.

The Investment Advisor

The funds' investment  advisor is American Century Investment  Management,  Inc.
The advisor has been  managing  mutual  funds  since 1958.  American  Century is
headquartered at 4500 Main Street, Kansas City, Missouri 64111.

The advisor is responsible  for managing the investment  portfolios of the funds
and directing the purchase and sale of their investment securities.  The advisor
also arranges for transfer agency,  custody and all other services necessary for
the funds to operate.

For the services it provided to the fund during its most recent fiscal year, the
advisor received a unified management fee of 0.90% percentage of the average net
assets of the fund.  The amount of the management fee for the fund is calculated
daily and paid  monthly.  Out of that fee,  the  advisor  paid all  expenses  of
managing and operating the fund except brokerage expenses, taxes, interest, fees
and expenses of the  independent  Directors  (including  legal counsel fees) and
extraordinary expenses.





The Fund Management Team

The advisor uses teams of portfolio  managers,  assistant portfolio managers and
analysts to manage the funds.  Teams meet regularly to review portfolio holdings
and to discuss purchase and sale activity.  Team members buy and sell securities
for a fund as they  see fit,  guided  by the  fund's  investment  objective  and
strategy.

Portfolio Manager members of the investment team are identified below:

Norman E. Hoops
Mr. Hoops, Senior Vice President and Portfolio Manager, has been a member of the
team that manages High-Yield since its inception.  He joined American Century as
Vice President and Portfolio  Manager in November 1989. In April 1993, he became
Senior Vice President.  . He has a bachelor of arts from Indiana  University and
an MBA from Butler University.

Theresa C. Fennell
Ms.  Fennell,  Portfolio  Manager,  has been a member of the team  that  manages
High-Yield since its inception.  She joined American Century in June 1997. Prior
to joining American Century,  she was an Associate  Portfolio Manager with Smith
Barney  Mutual  Funds  Management,  Inc. She has a bachelor of arts in economics
from the University of Virginia. Ms. Fennell is a Chartered Financial Analyst.

**********LEFT MARGIN CALLOUTS

*    Code of Ethics

     American Century has a Code of Ethics designed to ensure that the interests
     of fund shareholders come before the interests of the people who manage the
     funds.  Among  other  provisions,  the Code of Ethics  prohibits  portfolio
     managers  and other  investment  personnel  from  buying  securities  in an
     initial public offering or from profiting from the purchase and sale of the
     same  security  within 60 calendar  days.  In addition,  the Code of Ethics
     requires  portfolio managers and other employees with access to information
     about the purchase or sale of  securities  by the funds to obtain  approval
     before executing permitted personal trades.

**********END LEFT MARGIN CALLOUTS




Fundamental Investment Policies

Fundamental  investment  policies  contained  in  the  Statement  of  Additional
Information and the investment objectives of the fund may not be changed without
a shareholder  vote.  The Board of Directors  may change any other  policies and
investment strategies.

Year 2000 Issues

Many of the world's  computer  systems  currently  cannot properly  recognize or
process date-sensitive information relating to the Year 2000 and beyond. Because
this may impact the computer systems of various American  Century-affiliated and
external service providers for the fund,  American Century formally  initiated a
Year 2000  readiness  project in July 1997.  It  involves a team of  information
technology  professionals  assisted  by  outside  consultants  and  guided  by a
senior-level steering committee.  The team's goal is to assess the impact of the
Year 2000 on  American  Century's  systems,  renovate  or  replace  noncompliant
critical systems and test those systems. In addition,  the team has been working
to gather  information  about the Year 2000  efforts of the fund's  other  major
service providers.  Although American Century believes its critical systems will
function  properly in the Year 2000, this is not  guaranteed.  If the efforts of
American  Century or its external  service  providers  are not  successful,  the
fund's  business,  particularly  the provision of shareholder  services,  may be
hampered.

In  addition,  the  issuers  of  securities  the fund owns  could have Year 2000
computer  problems.  These problems could  negatively  affect the value of their
securities, which, in turn, could impact the fund's performance. The advisor has
established a process to gather publicly  available  information  about the Year
2000  readiness  of these  issuers.  However,  this  process may not uncover all
relevant  information,  and the  information  gathered  may not be complete  and
accurate.  Moreover, an issuer's Year 2000 readiness is only one of many factors
the fund  managers  may consider  when making  investment  decisions,  and other
factors may receive greater weight.




Investing with American Century

Services Automatically Available to You

You  automatically  will have access to the services  listed below when you open
your account.  If you do not want these services,  see  "Conducting  Business in
Writing" below.

Conducting Business in Writing

If you prefer to conduct  business in writing only, you can indicate this on the
account  application.  If you choose to do  business in writing  only,  you must
provide written instructions to invest,  exchange and redeem. All account owners
must sign transaction  instructions (with signatures  guaranteed for redemptions
in excess of $100,000).  If you want to add services later,  you can complete an
Investor Service Options form.

<TABLE>
Ways to Manage Your Account
- -------------------------------------------------------------------------------------------------------------------------------
- ---------------------------------- ---------------------------------------------- -----------------------------------------------
<S>                                <C>                                            <C>
By telephone                       Open an account                                Make additional investments
Investor Services                  If you are a current investor, you             Call us or use our Automated Information Line
1-800-345-2021                     can open an account by exchanging              if you have authorized us to invest from your
7 a.m. to 7 p.m. Central time      shares from another American Century           bank account.
                                   account. (This service is not
Automated Information Line         available if you have chosen to do             Sell shares
1-800-345-8765                     business in writing only.)                     Call an Investor Services Representative.
24 hours a day
seven days a week                  Exchange shares
                                   Call us or use our Automated Information Line
                                   if you have authorized us to accept telephone
                                   instructions.
- ---------------------------------- ---------------------------------------------- -----------------------------------------------
- ---------------------------------- ---------------------------------------------- -----------------------------------------------
By mail or fax                     Open an account                                Make additional investments 
PO Box 419200                      Send a signed and completed                    Send us your check or money order for at 
Kansas City, MO 64141-6200         application and check or money order           least $50 with an investment slip or $250
                                   payable to American Century                    without an investment slip. If you don't have
Fax 816-340-7962                   Investments.                                   an investment slip, include your name,
                                                                                  address and account number on your check or
                                   Exchange shares                                money order.
                                   Send us written instructions to
                                   exchange your shares from one                  Sell shares
                                   American Century account to another.           Send us written instructions to sell shares
                                                                                  or send us a redemption form. Call an
                                                                                  Investor Services Representative to request a
                                                                                  form.
- ---------------------------------- ---------------------------------------------- -----------------------------------------------
- ---------------------------------- ---------------------------------------------- -----------------------------------------------
Online                             Open an account                                Make additional investments
www.americancentury.com            If you are a current investor, you             Follow the instructions online if you have
                                   can open an account by exchanging              authorized us to invest from your bank
                                   shares from another American Century           account.
                                   account online. (This service is not
                                   available if you have chosen to do             Sell shares
                                   business in writing only.)                     Not available.

                                   Exchange shares
                                   Exchange shares from another American Century
                                   account.





A Note About Mailings to Shareholders

To reduce expenses and demonstrate respect for our environment, we will deliver
most financial reports, prospectuses and account statements to households in a
single envelope, even if the accounts are registered under different names. If
you would like additional copies of financial reports and prospectuses or
separate mailing of account statements, please call us.

Your Guide to Services and Policies

When you open an account, you will receive an Investor Services Guide, which
explains the services available to you and the policies of the fund and the
transfer agent.

- ---------------------------------------------------------------------------------------------------------------------------------
- -------------------------------- ----------------------------------------------   -----------------------------------------------
By wire                          Open an account                                  Make additional investments
                                 Call us to set up your account or mail           Follow the wire instructions provided in the
                                 a completed application to the address           "Open an account" section
                                 provided in the "By Mail" section and
                                 give your bank:                                  Sell shares
                                 o  Our bank information:                         You can receive redemption proceeds by
*    Please remember that           -     Commerce Bank N.A.                      wire  or electronic transfer.  (This
     if you request                 -     Routing No. 101000019                   service is not available if you have
     redemptions by wire, $10       -     ACMF Account No. 2804918                chosen to do business in writing only.)
     will be deducted from the   o        The fund name
     amount wired. Your bank     o        Your American Century account number
     also may charge a fee.      o        Your name
                                 o        The contribution year (for IRAs only)   Exchange shares
                                                                                  Not available.

- -------------------------------- ------------------------------------------------ -----------------------------------------------
- -------------------------------- ------------------------------------------------ -----------------------------------------------
Automatically                    Open an account                                  Make additional investments
                                 Not available.                                   Select "Establish Automatic Investments" on
                                                                                  your application to make automatic purchases
                                 Sell shares                                      of shares on a regular basis. You must invest
                                 If you have at least $10,000 in your             at least $600 per year per account.
                                 account, sell shares automatically by
                                 establishing Check-A-Month or Automatic          Exchange shares
                                 Redemption.                                      Send us written instructions to set up an
                                                                                  automatic exchange of your shares from one
                                                                                  American Century account to another.

- -------------------------------- ------------------------------------------------ -----------------------------------------------
- -------------------------------- ------------------------------------------------------------------------------------------------
In person                        If you prefer to handle your
                                 transactions in person, visit one of our
                                 Investor Centers and a representative can help
                                 you open an account, make additional
                                 investments, sell or exchange shares. Here are
                                 the Investor Centers you can visit

                                 4500 Main Street                        4917 Town Center Dr.
                                 Kansas City, Missouri                   Leawood, Kansas

                                 1665 Charleston Road                    2000 S. Colorado Blvd.
                                 Mountain View, California               Denver, Colorado
</TABLE>





Minimum Initial Investment Amounts

To open an account the minimum investments are as follows for:
- ----------------------------------------------------------------------------
Individual or Joint                                                $5,000
Traditional IRA                                                    $1,000
Roth IRA                                                           $1,000
Education IRA                                                        $500
UGMA/UTMA                                                          $1,000
403(b)                                                         No minimum

Redemption of shares in low-balance accounts

If your account falls below the minimum  balance we will notify you and give you
90 days to meet the minimum or, for most types of equity accounts,  to establish
an  automatic  monthly  investment.  If you do not meet the  deadline,  American
Century  will  redeem the shares in the  account  and send the  proceeds to your
address of record.

Investing Through Financial Intermediaries

If you do business  with us through a  financial  intermediary  or a  retirement
plan,  your ability to purchase,  exchange and redeem  shares will depend on the
policies of that entity. Some policy differences may include

o        minimum investment requirements
o        exchange policies
o        fund choices
o        cut-off time for investments

Please  contact  your  financial  intermediary  or plan  sponsor  for a complete
description  of its policies.  Copies of the funds' annual  reports,  semiannual
reports  and  Statements  of  Additional  Information  are  available  from your
intermediary or plan sponsor.

Certain  financial   intermediaries  perform  recordkeeping  and  administrative
services  for their  clients  that would  otherwise  be  performed  by  American
Century's transfer agent. In some  circumstances,  American Century will pay the
service provider a fee for performing those services.

Although  transactions in fund shares may be made directly with American Century
at no charge,  you also may purchase,  redeem and exchange  fund shares  through
financial  intermediaries that charge a transaction-based or other fee for their
services. Those charges are retained by the intermediary and are not shared with
American Century or the funds.

American Century has contracts with certain  financial  intermediaries  in which
they represent that they will track the time investment orders are received. The
funds have  authorized  those  intermediaries  to accept  orders on each  fund's
behalf up to the time net asset value is determined.  Such orders will be priced
at the net asset value next determined after acceptance of the order on a fund's
behalf.

**********LEFT MARGIN CALLOUTS

* Financial  intermediaries include banks,  broker-dealers,  insurance companies
and investment advisors.

**********END LEFT MARGIN CALLOUTS




Share Price and Distributions

Share Price

We determine the net asset value of the fund as of the close of regular  trading
on the New York Stock  Exchange  (usually 4 p.m.  Eastern  time) on each day the
Exchange is open. On days when the Exchange is not open, we do not calculate the
net asset value. The net asset value of a fund share is the current value of its
investments,  minus  any  liabilities,  divided  by the  number  of fund  shares
outstanding.

If current prices of securities  owned by a fund are not readily  available from
an independent  pricing  service,  the advisor may determine their fair value in
accordance with procedures adopted by the fund's Board of Directors.  Trading of
securities  in foreign  markets may not take place on every day the  Exchange is
open.  Also,  trading in some  foreign  markets  may take place on  weekends  or
holidays  when a fund's net asset  value is not  calculated.  So, the value of a
fund's  portfolio  may be  affected  on days when you can't  purchase  or redeem
shares of the fund.

We will price your purchase,  exchange or redemption at the net asset value next
determined after we receive your transaction request in good order.

Distributions

Federal tax laws require the fund to make  distributions  to its shareholders in
order  to  qualify  as a  "regulated  investment  company."  Qualification  as a
regulated investment company means that the fund will not be subject to state or
federal income tax in amounts distributed.  The distributions  generally consist
of dividends and interest  received,  as well as capital  gains  realized on the
sale of  investment  securities.  The fund pays  distributions  from net  income
monthly and generally pays  distributions  of capital gains, if any, once a year
in December. It may make more frequent distributions if necessary to comply with
Internal Revenue Code provisions.

You will begin to participate in fund  distributions the day after your purchase
is effective.  If you redeem shares, you will receive the distribution  declared
for  the day  you  redeem.  If you  redeem  all  shares,  we  will  include  the
distribution on the redeemed shares with your redemption proceeds.

Participants in employer-sponsored retirement or savings plans must reinvest all
distributions.  For shareholders  investing  through taxable  accounts,  we will
reinvest  distributions unless you elect to receive them in cash. Please consult
our Investor Services Guide for further information regarding  distributions and
your distribution options.

**********LEFT MARGIN CALLOUTS

The net asset value of a fund is the price of the fund's shares.

Capital gains is the increase in value of a capital asset,  such as stock,  from
the time it is  purchased.  Tax becomes  due on capital  gains once the asset is
sold.

**********END LEFT MARGIN CALLOUTS




Taxes

The tax consequences of owning shares of the fund will vary depending on whether
you own them through a taxable or tax-deferred  account. Tax consequences result
from  distributions  by the fund of dividend and interest income it has received
and capital gains it has generated  through its  investment  activities,  and by
sales of fund shares by  investors  after the net asset value has  increased  or
decreased.

Tax-Deferred Accounts

If you purchase fund shares through a tax-deferred  account, such as an IRA or a
qualified  employer-sponsored  retirement  or savings  plan,  income and capital
gains  distributions  usually will not be subject to current taxation,  but will
accumulate in your account  under the plan on a  tax-deferred  basis.  Likewise,
moving  from one fund to  another  fund  within a plan or  tax-deferred  account
generally  will  not  cause  you to be  taxed.  For  information  about  the tax
consequences of making  purchases or withdrawals  through an employer  sponsored
retirement  or  savings  plan,  or  through  an IRA,  please  consult  your plan
administrator, your summary plan description or a professional tax advisor.

Taxable Accounts

If you own fund shares through a taxable account,  distributions by the fund and
sales by you of fund shares may cause you to be taxed.

Taxability of Distributions

Fund distributions may consist of income earned by the fund from sources such as
dividends  and  interest,  or  capital  gains  generated  from  the sale of fund
investments.  Distributions of income are taxed as ordinary income. Distribution
of capital gains are classified  either as short-term or long-term and are taxed
as follows:

<TABLE>
Type of Distribution          Tax rate for 15% Bracket      Tax rate for 28% Bracket or above
- ---------------------------- ---------------------------- --------------------------------------
<S>                                      <C>                               <C>
Short-term capital gains        Ordinary income rate              Ordinary income rate
Long-term capital gains                  10%                               20%
</TABLE>

The tax status of any  distribution  of capital  gains is determined by how long
the fund held the  underlying  security that was sold,  not by how long you have
been  invested  in the  fund or  whether  you  reinvest  your  distributions  in
additional  shares or take them as income.  American Century will detail the tax
status of fund  distributions  for each calendar year in an annual tax statement
from the fund.

Distributions  also may be subject to state and local taxes.  Because everyone's
tax situation is unique,  always  consult your tax  professional  about federal,
state and local tax consequences.

Taxes on Transactions

Your  redemptions -- including  exchanges to other American Century funds -- are
subject to capital  gains tax.  The table above can provide a general  guide for
your potential tax liability when selling or exchanging fund shares. "Short-term
capital  gains" are gains on fund shares held for 12 months or less.  "Long-term
capital  gains" are gains on fund shares  held for more than 12 months.  If your
shares  decrease in value,  their sale or exchange will result in a long-term or
short-term capital loss.

**********LEFT MARGIN CALLOUTS

*    Buying a Dividend

     Purchasing  fund shares in a taxable  account shortly before a distribution
     is sometimes  known as "buying a dividend." In taxable  accounts,  you must
     pay income taxes on the  distribution  whether you take the distribution in
     cash or  reinvest  it.  In  addition,  you  will  have to pay  taxes on the
     distribution whether the value of your investment  decreased,  increased or
     remained  the same after you bought the fund  shares.  The risk in buying a
     dividend is that a fund's  portfolio may build up taxable gains  throughout
     the period covered by a  distribution,  as securities are sold at a profit.
     We distribute those gains to you, after subtracting any losses, even if you
     did not own the shares when the gains occurred. Thus if you buy a dividend,
     you incur the full tax liability of the  distribution  period,  but you may
     not enjoy the full benefit of the gains realized in the fund's portfolio.

**********END LEFT MARGIN CALLOUTS






Multiple Class Information

American   Century   offers  three  classes  of  the  funds:   Investor   Class,
Institutional Class and Advisor Class. The shares offered by this Prospectus are
Investor Class shares and have no up-front or deferred charges,  commissions, or
12b-1 fees.

American  Century offers the other classes of shares  primarily to institutional
investors,    through    institutional    distribution    channels,    such   as
employer-sponsored  retirement  plans,  or  through  banks,  broker-dealers  and
insurance  companies.  The other classes have different fees,  expenses,  and/or
minimum  investment  requirements than the Investor Class. The difference in the
fee structures  among the classes is the result of their  separate  arrangements
for shareholder and  distribution  services and not the result of any difference
in  amounts  charged  by the  advisor  for core  investment  advisory  services.
Accordingly,  the  core  investment  advisory  expenses  do not  vary by  class.
Different fees and expenses will affect performance.  For additional information
concerning the other classes of shares not offered by this  Prospectus,  call us
at  1-800-345-3533 or contact a sales  representative or financial  intermediary
who offers those classes of shares.

Except as  described  below,  all  classes  of  shares of a fund have  identical
voting,  dividend,   liquidation  and  other  rights,  preferences,   terms  and
conditions.  The only  differences  among the various classes are (a) each class
may be subject to different  expenses specific to that class, (b) each class has
a different identifying designation or name, (c) each class has exclusive voting
rights with respect to matters solely  affecting such class,  (d) each class may
have different exchange privileges,  and (e) the Institutional Class may provide
for automatic  conversion  from that class into shares of the Investor  Class of
the same fund.




Financial Highlights

Understanding the Financial Highlights

This table  itemizes what  contributed  to the changes in share price during the
period,  and compares  this to changes over the last five fiscal years (or less,
if the share class is not five years old).

On a per-share basis, it includes:

o        share price at the beginning of the period
o        investment income and capital gains or losses
o        distributions of income and capital gains paid to shareholders
o        share price at the end of the period

It also includes some key statistics for the period:

o    Total Return--the  overall  percentage of return of the fund,  assuming the
     reinvestment of all distributions

o    Expense Ratio--operating expenses as a percentage of average net assets

o    Net Income  Ratio--net  investment  income as a  percentage  of average net
     assets

o    Portfolio  Turnover--the  percentage  of  the  fund's  buying  and  selling
     activity

The Financial  Highlights  for the fiscal years ended October 31, 1997 and 1998,
have been audited by Deloitte & Touche LLP, independent  auditors.  Their report
is in the fund's annual  report,  which is  incorporated  by reference  into the
Statement of Additional Information, and is available upon request. Prior years'
information was audited by other independent auditors, whose report thereon also
is incorporated by reference into the Statement of Additional Information.




High-Yield

PER SHARE DATA                                         1998          1997
Net Asset Value, Beginning of Year
                                                   ------------- --------------
Income from Investment Operations
   Net Investment Income (dividends)
   Net Realized and Unrealized Gain (Loss) on
   Investment Transactions
                                                   ------------- --------------
   Total From Investment Operations
                                                   ------------- --------------
Less Distributions
   From Net Investment Income (dividends)
   In Excess of Net Realized Gains
                                                   ------------- --------------
                                                   ------------- --------------
   Total Distributions
                                                   ------------- --------------
Net Asset Value, End of Year
                                                   ------------- --------------
Total Return(1)
RATIOS/SUPPLEMENTAL DATA
Ratio of Operating Expenses to Average Net Assets
Ratio of Net Investment Income to Average Net Assets
Portfolio Turnover Rate
Net Assets, End of Year (in thousands)

(1)  Total return assumes reinvestment of dividends and capital gains, if any.



At Your Service

Make virtually any transaction online

The next time you're  surfing the Net,  stop by American  Century's  Web site at
www.americancentury.com.   Current   shareholders   can  open  new  accounts  by
exchanging  shares  (provided  the account  registration  does not  change).  In
addition,  you can view  transactions and check your account  balances.  You can
also sign up to  receive  annual  updates  to your  prospectuses  and  financial
reports via the Net instead of through the mail.

Expand your investment options with American Century Brokerage

If  you're  looking  for a wide  range  of  investment  options  - from  trading
individual  securities  to  purchasing  mutual  funds  offered  by  hundreds  of
companies  - look to  American  Century  Brokerage.  With  this  new  investment
service, you can take advantage of 24-hour trading on our Web site or TeleSelect
automated  telephone  service.  Or, if you prefer,  you can do business directly
with a Brokerage Associate.

With service features including a Gold MasterCard(R)  ATM/Debit Card,  unlimited
CheckWriting  and cost basis reporting (all available with the American  Century
Brokerage Access  AccountSM),  our brokerage  service can simplify your life now
while you  prepare  financially  for the years to come.  For  information  about
opening a brokerage account, please call an American Century Brokerage Associate
at 1-888-345-2071.

Send your distributions straight to the bank

If you opt to have your dividend and capital gain  distributions  paid to you in
cash rather than  reinvesting  them into your  account,  consider an  electronic
transfer  to your  bank  account.  It will save you time and a trip to the bank.
Call an Investor Services Representative for more information.

Check out our library

Are you looking for additional information on bond basics? Or, are you trying to
decide if municipal bonds have a place in your portfolio? Perhaps you would like
to test your knowledge of bonds and how they work. These are subjects covered in
our Financial FYI library that are  available to you.  Financial  FYI, a growing
library of one-page  resources,  clearly and quickly explains various  financial
subjects to help you make informed decisions.  To request one of these articles,
call an Investor Services Representative.


More information about the funds is contained in these documents:

Annual and Semiannual Reports.  These reports contain more information about the
fund's  investments  and the market  conditions and investment  strategies  that
significantly  affected the fund's  performance during the most recent six-month
fiscal period.

Statement of Additional  Information.  The SAI contains a more  detailed,  legal
description  of the funds'  operations,  investment  restrictions,  policies and
practices. The SAI is incorporated by reference into this Prospectus. This means
that it is legally part of this Prospectus, even if you don't request a copy.

You also can get information about the funds (including the SAI) from the SEC.

v    In person.            SEC Public Reference Room
                           Washington, D.C.
                           Call 1-800-SEC-0330 for location and hours.

v    On the internet.      www.sec.gov.

v    By mail.              Public Reference Section
                           Washington, D.C.
                           20549-6009
                           The SEC will charge a fee for  copying the  documents
                           you request.


American Century Investments
P.O. Box 419200
Kansas City, Missouri 64141-6200

Investor Services
1-800-345-2021 or 816-531-5575

Automated Information Line
1-800-345-8765

Fax
816-340-7962

www.americancentury.com

Telecommunications Device for the Deaf
1-800-634-4113 or 816-444-3485

Corporate, Not-for-Profit, Keogh,
SEP-, SARSEP-, SIMPLE-IRA and 403(b) Services
1-800-345-3533

Investment Company Act File No. 811-0816
<PAGE>
[american century logo(reg.sm)]
American
Century

Prospectus

January 29, 1999
- --------------------------------------------------------------------------------

AMERICAN CENTURY

New Opportunities

Investor Class

The  Securities and Exchange  Commission  has not approved or disapproved  these
securities or determined if this Prospectus is accurate or complete.  Anyone who
tells you otherwise is committing a crime.

Distributed by Funds Distributor, Inc.



Reading a prospectus doesn't have to be a chore. We've done the hard work so you
can focus on what's  important--learning  about the fund. Take a look inside and
you'll see this  prospectus  is  different  from  others.  It takes a  clear-cut
approach to fund information.

Here's what you'll find:

o    The fund's primary investments and risks

o    A description of who may or may not want to invest in the fund

o    Fund performance,  including returns for each year, best and worst quarters
     and average annual returns compared to the fund's benchmarks

o    An overview of ways to best manage your accounts

o    Helpful tips and definitions of key investment terms

Whether  you're a current  investor or  investing  in mutual funds for the first
time, this prospectus  will give you a clear  understanding  of the fund. If you
have questions,  our Investor Services Representatives are available weekdays, 7
a.m. to 7 p.m.  Central time. Our toll-free  number is  1-800-345-2021.  We look
forward to helping you achieve your financial goals.

                                      Sincerely,


                                      Mark Killen
                                      Senior Vice President
                                      American Century Investment Services, Inc.





Table of Contents

An Overview of the Fund....................................................2

Fees and Expenses..........................................................3

Detailed Information about the Fund........................................4

Management................................................................15

Investing With American Century...........................................18

Share Price and Distributions.............................................21

Taxes.....................................................................22

Financial Highlights......................................................23

At Your Service...........................................................22

Fund Reference
                       Fund Code        Ticker         Newspaper Listing
- ------------------------------------------------------------------------------
 New Opportunities     036              TWNOX          New Opp
- ------------------------------------------------------------------------------

**********LEFT MARGIN CALLOUTS

Throughout  this  book  you'll  find  definitions  of key  investment  terms and
phrases.  When you see a word printed in green italics,  look for its definition
in the left margin.

*........This symbol highlights special information and helpful tips.

**********END LEFT MARGIN CALLOUTS


An Overview of the Fund

What is the fund's investment goal?

This fund seeks long-term capital growth.

What are the fund's primary investment strategies and principal risks?

The fund looks for common stocks of growing companies. The basis of the strategy
used by  these  fund is that,  over the long  term,  stocks  of  companies  with
earnings and revenue  growth have a greater  than average  chance to increase in
value over time. A more  detailed  description  of American  Century's  "growth"
investment style begins on page XX

The fund's principal risks include:

o Market Risk       The value of the fund's  shares will go up and down based on
                    the  performance of the companies  whose  securities it owns
                    and other factors affecting the securities market generally.

o Price Volatility  The value of the fund's shares may  fluctuate  significantly
                    in the short term.

o Principal Loss    As with all mutual funds, if you sell your shares when their
                    value is less than the price you paid, will lose money.

Who may want to invest in the fund?

New  Opportunities  is only available for purchase by  participants  in American
Century's Priority Investors Program and employees of American Century. The fund
may be a good investment if you are

0    seeking long-term capital growth from your investment

0    comfortable with the fund's short-term price volatility

0    comfortable with the risks associated with the fund's investment strategy

0    investing through an IRA or other tax-advantaged retirement plan

Who may not want to invest in the fund?

The fund may not be a good investment if you are

0    seeking current income from your investment

0    investing for a short period of time

0    uncomfortable with short-term volatility in the value of your investment

**********LEFT MARGIN CALLOUTS

*    An  investment  in the fund is not a bank  deposit  and is not  insured  or
     guaranteed  by the  Federal  Deposit  Insurance  Corporation  or any  other
     government agency.

**********END LEFT MARGIN CALLOUTS




Fees and Expenses

There are no sales loads or fees or other charges

0    to buy fund shares directly from American Century

0    to reinvest dividends in additional shares

0    to exchange into the Investor Class shares of other American Century funds.

The following  tables describe the fees and expenses that you may pay if you buy
and hold shares of the fund.


Shareholder Fees (fees paid directly from your investment)
                       
- ---------------------- -------------------------------------------------------
New Opportunities      Redemption Fee(as a percentage of amount redeemed)
- ---------------------- -------------------------------------------------------
Shares held less than                        2.0%
     5 years
Shares held 5 years
     or more                                 None

<TABLE>
Annual Operating Expenses (expenses that are deducted from fund assets)
                      Management Fee     Distribution and          Other Expenses1    Total Annual Fund
                                         Service (12b-1) Fees                         Operating Expenses
- --------------------- ------------------ ------------------------- ------------------ --------------------
<S>                   <C>                <C>                       <C>                <C>  
New Opportunities     1.50%              None                      0.00%              1.50%
- --------------------- ------------------ ------------------------- ------------------ --------------------
</TABLE>
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 of Hypothetical Fund Costs

The  examples in the table  below are  intended to help you compare the costs of
investing in a fund with those of other mutual funds. Assuming you ...

o        invest $10,000 in the fund

o        redeem all of your shares at the end of the periods shown below

o        earn a 5% return each year and

o        incur the same operating expenses shown above

 ... your cost of investing in the fund would be:

                       1 Year    3 Years    5 Years    10 Years
- ---------------------- --------- ---------- ---------- -----------
New Opportunities      $359      $693       $814       $1,778
- ---------------------- --------- ---------- ---------- -----------

You would pay the following expenses if you did not redeem your shares:

                       1 Year    3 Years    5 Years    10 Years
- ---------------------- --------- ---------- ---------- -----------
New Opportunities      $152      $472       $814       $1,778
- ---------------------- --------- ---------- ---------- -----------

**********LEFT MARGIN CALLOUTS

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

**********END LEFT MARGIN CALLOUTS




Detailed Information about the Fund

New Opportunities

What is the fund's investment objective?

The fund seeks long-term capital growth. This is a fundamental policy and cannot
be changed without shareholder approval.

How does the fund pursue its investment objective?

The fund managers look for stocks of  smaller-sized  companies that they believe
will increase in value over time, using a growth investment  strategy  developed
by American  Century.  This  strategy  looks for  companies  with  earnings  and
revenues that are not only growing,  but growing at a  successively  faster,  or
accelerating,  pace.  This strategy is based on the premise that,  over the long
term,  the stocks of companies  with  accelerating  earnings and revenues have a
greater-than-average chance to increase in value.

**********LEFT MARGIN CALLOUTS

*    Accelerating  growth is shown,  for example,  by growth that is faster this
     quarter than last or faster this year than the year before.

**********END LEFT MARGIN CALLOUTS

The managers use a bottom-up approach to select stocks to buy for the fund. That
means they first look for strong,  growing  companies to invest in,  rather than
simply  buying any  company in a growing  industry  or  sector.  Using  American
Century's extensive computer database,  the managers track financial information
for  thousands of companies to identify  trends in the  companies'  earnings and
revenues. This information is used to help the fund managers select or decide to
continue to hold the stocks of  companies  they  believe will be able to sustain
accelerating growth, and to sell stocks of companies whose growth begins to slow
down.

Although most of the fund's assets will be invested in U.S. companies,  there is
no limit on the amount of assets the fund can invest in foreign companies.  Most
of the fund's foreign investments are in companies located and doing business in
developed countries. Investments in foreign securities present some unique risks
that are more fully described in the fund's Statement of Additional Information.

The fund  managers do not attempt to time the  market.  Instead,  they intend to
keep the fund essentially fully invested in stocks regardless of the movement of
stock prices generally.  When the managers believe that it is prudent,  the fund
may  invest  a  portion  of  its  assets  in  convertible  securities,   foreign
securities, short-term instruments,  non-leveraged stock index futures contracts
and  other  similar  securities.  Stock  index  futures  contracts,  a  type  of
derivative  security,  can help the  fund's  cash  assets  remain  liquid  while
performing more like stocks. The fund has a policy governing stock index futures
and  similar  derivative  securities  to help  manage the risk of these types of
investments.  For example,  the managers  cannot  leverage the fund's  assets by
investing in a derivative  security.  A complete  description of the derivatives
policy is included in the Statement of Additional Information.

Additional  information about the fund'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 six-month period.  You may get these
reports at no cost by calling us.

What kinds of securities does the fund buy?

New  Opportunities  will  usually  purchase  common  stocks of smaller  U.S. and
foreign  companies,  but it can  purchase  other types of  securities,  as well.
Companies considered to be small generally have a market  capitalization of less
than $1  billion.  The fund also may invest in domestic  and  foreign  preferred
stocks, convertible securities,  equity equivalent securities,  notes, bonds and
other debt  securities.  The fund  limits its  purchase  of debt  securities  to
investment-grade obligations.

**********LEFT MARGIN CALLOUTS

*    Market  capitalization  means  the value of a  company,  as  determined  by
     multiplying the number of shares of stock it has outstanding by the stock's
     current market price per share.

**********END LEFT MARGIN CALLOUTS

What are the primary risks of investing in the fund?

o    The value of a fund's  shares  depends on the value of the stocks and other
     securities it owns. The value of the individual securities a fund owns will
     go up and down  depending on the  performance  of the companies that issued
     them, general market and economic conditions, and investor confidence.
o    The fund managers may buy a large amount of a company's stock quickly,  and
     often will  dispose of it quickly if the  company's  earnings  or  revenues
     decline.  While the managers  believe this  strategy  provides  substantial
     appreciation  potential over the long term, in the short term it can create
     a significant  amount of share price  volatility.  This  volatility  can be
     greater than that of the average stock fund.
o    Because  New  Opportunities  generally  invests in smaller  companies  than
     American  Century's  similarly managed growth equity funds (such as Growth,
     Ultra  and  Select),  it may be  more  volatile,  and  subject  to  greater
     short-term  risk,  than those  funds.  Smaller  companies  may have limited
     financial  resources,  product lines and markets,  and their securities may
     trade less  frequently  and in more limited  volumes than the securities of
     larger  companies.  In addition,  smaller  companies may have less publicly
     available  information  and,  when  available,  it  may  be  inaccurate  or
     incomplete.
o    As with all  funds,  at any given  time,  the  value of your  shares of New
     Opportunities  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.
o    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.
o    Foreign securities can have certain unique risks, including fluctuations in
     currency  exchange  rates,  unstable  political  and  economic  structures,
     reduced  availability of public  information and lack of uniform  financial
     reporting  and  regulatory  practices  similar  to those that apply to U.S.
     issuers.  These  factors  make  investing in foreign  securities  generally
     riskier than  investing in U.S.  stocks.  To the extent the fund invests in
     foreign securities, the overall risk of the fund could be affected.

As a result of their investment strategy, the fund is intended for investors who
seek  long-term  capital  growth  through an aggressive  equity fund and who are
willing to accept the risks associated with the fund's investment strategy.





Fund Performance History

The  performance  information  on this page is designed to help you see how fund
returns can vary.  Keep in mind that past  performance  does not predict how the
fund will perform in the future.

Annual Total Returns

The following bar chart shows the  performance  of the fund's shares for each of
the last 10  calendar  years  (or for each  full year in the life of the fund if
less than 10 years).  It  indicates  the  volatility  of the  fund's  historical
returns from year to year.

[GRAPH  DEPICTING  ANNUAL TOTAL RETURNS FOR NEW  OPPORTUNITIES  SINCE INCEPTION;
UPDATED FIGURES NOT AVAILABLE]

Highest and Lowest Quarterly Returns
The  highest  and lowest  returns of the  fund's  shares for a calendar  quarter
during the life of the fund are provided below to indicate the fund's historical
short-term  volatility.  Shareholders should be aware, however, that the fund is
intended for investors with a long-term  investment  horizon and are not managed
for short-term results.

[GRAPH  DEPICTING  HIGHEST  AND  LOWEST  RETURNS  FOR  NEW  OPPORTUNITIES  SINCE
INCEPTION; UPDATED FIGURES NOT AVAILABLE]

Average Annual Returns

The following  table shows the average  annual  returns of the fund's shares for
the periods indicated during the last 10 calendar years. The Russell 2000 Growth
Index is included as a benchmark for performance comparison. The benchmark is an
unmanaged index that has no operating costs.

                                         1 year        Life of Fund*
- -------------------------------------------------------------------------
New Opportunities                        XXX%          XXX%
Russell 2000 Growth Index                XXX%          XXX%
- -------------------------------------------------------------------------

*  The inception date for the fund is December 26, 1996.

**********LEFT MARGIN CALLOUTS

The fund's total return for the period from  January 1, 1998,  to September  30,
1998, is:

New Opportunities                          X.XX%

*    For current  performance  information,  please call us at 1-800-345-2021 or
     visit American Century's Web site at www.americancentury.com.

**********END LEFT MARGIN CALLOUTS




Management

Who manages the fund?

The Board of Directors,  investment  advisor and fund  management  team play key
roles in the management of the fund.

The Board of Directors

The Board of Directors  oversees the  management  of the fund and meets at least
quarterly  to  review  reports  about  fund  operations.  Although  the Board of
Directors does not manage the fund, it has hired an investment advisor to do so.
More than half of the Directors are independent of the fund's advisor,  that is,
they are not employed by and have no financial interest in the advisor.

The Investment Advisor

The fund's investment  advisor is American Century Investment  Management,  Inc.
The advisor has been  managing  mutual  funds  since 1958.  American  Century is
headquartered at 4500 Main Street, Kansas City, Missouri 64111.

The advisor is responsible  for managing the  investment  portfolios of the fund
and directing the purchase and sale of its  investment  securities.  The advisor
also arranges for transfer agency,  custody and all other services necessary for
the fund to operate.

For the services it provided to the fund during its most recent fiscal year, the
advisor received a unified management fee of 1.50% the average net assets of the
fund. The amount of the management fee is calculated daily and paid monthly. Out
of that fee, the advisor paid all  expenses of managing and  operating  the fund
except brokerage expenses, taxes, interest, fees and expenses of the independent
Directors (including legal counsel fees) and extraordinary expenses.




The Fund Management Team

The advisor uses teams of portfolio  managers,  assistant portfolio managers and
analysts to manage the fund. Teams meet regularly to review  portfolio  holdings
and to discuss purchase and sale activity.  Team members buy and sell securities
for a fund as they  see fit,  guided  by the  fund's  investment  objective  and
strategy.

Portfolio Manager members of the investment team are identified below:

Christopher K. Boyd
Mr. Boyd,  Vice President and Portfolio  Manager,  has been a member of the team
that manages New Opportunities since rejoining American Century in January 1998.
With the exception of 1997,  he has been with American  Century since March 1988
and served as a Portfolio  Manager since December  1992.  During 1997, he was in
private practice as an investment advisor. He has a bachelor of science from the
University  of  Kansas  and an MBA from  Dartmouth  College.  He is a  Chartered
Financial Analyst.

John D. Seitzer
Mr. Seitzer, Vice President and Portfolio Manager, has been a member of the team
that manages New Opportunities  since the fund's  inception.  He joined American
Century in June 1993 as an  Investment  Analyst and was  promoted  to  Portfolio
Manager in July 1996. He has a B.S. in accounting  and finance from Kansas State
University  and an MBA in finance  from  Indiana  University.  He is a Chartered
Financial Analyst and a Certified Public Accountant.

**********LEFT MARGIN CALLOUTS

*    Code of Ethics

     American Century has a Code of Ethics designed to ensure that the interests
     of fund shareholders come before the interests of the people who manage the
     fund.  Among  other  provisions,  the Code of  Ethics  prohibits  portfolio
     managers  and other  investment  personnel  from  buying  securities  in an
     initial public offering or from profiting from the purchase and sale of the
     same  security  within 60 calendar  days.  In addition,  the Code of Ethics
     requires  portfolio managers and other employees with access to information
     about the purchase or sale of  securities  by the funds to obtain  approval
     before executing permitted personal trades.

**********END LEFT MARGIN CALLOUTS




Fundamental Investment Policies

Fundamental  investment  policies  contained  in  the  Statement  of  Additional
Information and the investment objectives of the fund may not be changed without
a shareholder  vote.  The Board of Directors  may change any other  policies and
investment strategies.

Year 2000 Issues

Many of the world's  computer  systems  currently  cannot properly  recognize or
process date-sensitive information relating to the Year 2000 and beyond. Because
this may impact the computer systems of various American  Century-affiliated and
external service providers for the fund,  American Century formally  initiated a
Year 2000  readiness  project in July 1997.  It  involves a team of  information
technology  professionals  assisted  by  outside  consultants  and  guided  by a
senior-level steering committee.  The team's goal is to assess the impact of the
Year 2000 on  American  Century's  systems,  renovate  or  replace  noncompliant
critical systems and test those systems. In addition,  the team has been working
to gather  information  about the Year 2000  efforts of the fund's  other  major
service providers.  Although American Century believes its critical systems will
function  properly in the Year 2000, this is not  guaranteed.  If the efforts of
American  Century or its external  service  providers  are not  successful,  the
fund's  business,  particularly  the provision of shareholder  services,  may be
hampered.

In  addition,  the  issuers  of  securities  the funds own could  have Year 2000
computer  problems.  These problems could  negatively  affect the value of their
securities, which, in turn, could impact the fund's performance. The advisor has
established a process to gather publicly  available  information  about the Year
2000  readiness  of these  issuers.  However,  this  process may not uncover all
relevant  information,  and the  information  gathered  may not be complete  and
accurate.  Moreover, an issuer's Year 2000 readiness is only one of many factors
the fund  managers  may consider  when making  investment  decisions,  and other
factors may receive greater weight.




Investing with American Century

Services Automatically Available to You

You  automatically  will have access to the services  listed below when you open
your account.  If you do not want these services,  see  "Conducting  Business in
Writing" below.

Conducting Business in Writing

If you prefer to conduct  business in writing only, you can indicate this on the
account  application.  If you choose to do  business in writing  only,  you must
provide written instructions to invest,  exchange and redeem. All account owners
must sign transaction  instructions (with signatures  guaranteed for redemptions
in excess of $100,000).  If you want to add services later,  you can complete an
Investor Service Options form.

<TABLE>
Ways to Manage Your Account
- -------------------------------------------------------------------------------------------------------------------------------
- ---------------------------------- ---------------------------------------------- -----------------------------------------------
<S>                                <C>                                            <C>
By telephone                       Open an account                                Make additional investments
Investor Services                  If you are a current investor, you             Call us or use our Automated Information Line
1-800-345-2021                     can open an account by exchanging              if you have authorized us to invest from your
7 a.m. to 7 p.m. Central time      shares from another American Century           bank account.
                                   account. (This service is not
Automated Information Line         available if you have chosen to do             Sell shares
1-800-345-8765                     business in writing only.)                     Call an Investor Services Representative.
24 hours a day
seven days a week                  Exchange shares
                                   Call us or use our Automated Information Line
                                   if you have authorized us to accept telephone
                                   instructions.
- ---------------------------------- ---------------------------------------------- -----------------------------------------------
- ---------------------------------- ---------------------------------------------- -----------------------------------------------
By mail or fax                     Open an account                                Make additional investments 
PO Box 419200                      Send a signed and completed                    Send us your check or money order for at 
Kansas City, MO 64141-6200         application and check or money order           least $50 with an investment slip or $250
                                   payable to American Century                    without an investment slip. If you don't have
Fax 816-340-7962                   Investments.                                   an investment slip, include your name,
                                                                                  address and account number on your check or
                                   Exchange shares                                money order.
                                   Send us written instructions to
                                   exchange your shares from one                  Sell shares
                                   American Century account to another.           Send us written instructions to sell shares
                                                                                  or send us a redemption form. Call an
                                                                                  Investor Services Representative to request a
                                                                                  form.
- ---------------------------------- ---------------------------------------------- -----------------------------------------------
- ---------------------------------- ---------------------------------------------- -----------------------------------------------
Online                             Open an account                                Make additional investments
www.americancentury.com            If you are a current investor, you             Follow the instructions online if you have
                                   can open an account by exchanging              authorized us to invest from your bank
                                   shares from another American Century           account.
                                   account online. (This service is not
                                   available if you have chosen to do             Sell shares
                                   business in writing only.)                     Not available.

                                   Exchange shares
                                   Exchange shares from another American Century
                                   account.





A Note About Mailings to Shareholders

To reduce expenses and demonstrate respect for our environment, we will deliver
most financial reports, prospectuses and account statements to households in a
single envelope, even if the accounts are registered under different names. If
you would like additional copies of financial reports and prospectuses or
separate mailing of account statements, please call us.

Your Guide to Services and Policies

When you open an account, you will receive an Investor Services Guide, which
explains the services available to you and the policies of the fund and the
transfer agent.

- ---------------------------------------------------------------------------------------------------------------------------------
- -------------------------------- ----------------------------------------------   -----------------------------------------------
By wire                          Open an account                                  Make additional investments
                                 Call us to set up your account or mail           Follow the wire instructions provided in the
                                 a completed application to the address           "Open an account" section
                                 provided in the "By Mail" section and
                                 give your bank:                                  Sell shares
                                 o  Our bank information:                         You can receive redemption proceeds by
*    Please remember that           -     Commerce Bank N.A.                      wire  or electronic transfer.  (This
     if you request                 -     Routing No. 101000019                   service is not available if you have
     redemptions by wire, $10       -     ACMF Account No. 2804918                chosen to do business in writing only.)
     will be deducted from the   o        The fund name
     amount wired. Your bank     o        Your American Century account number
     also may charge a fee.      o        Your name
                                 o        The contribution year (for IRAs only)   Exchange shares
                                                                                  Not available.

- -------------------------------- ------------------------------------------------ -----------------------------------------------
- -------------------------------- ------------------------------------------------ -----------------------------------------------
Automatically                    Open an account                                  Make additional investments
                                 Not available.                                   Select "Establish Automatic Investments" on
                                                                                  your application to make automatic purchases
                                 Sell shares                                      of shares on a regular basis. You must invest
                                 If you have at least $10,000 in your             at least $600 per year per account.
                                 account, sell shares automatically by
                                 establishing Check-A-Month or Automatic          Exchange shares
                                 Redemption.                                      Send us written instructions to set up an
                                                                                  automatic exchange of your shares from one
                                                                                  American Century account to another.

- -------------------------------- ------------------------------------------------ -----------------------------------------------
- -------------------------------- ------------------------------------------------------------------------------------------------
In person                        If you prefer to handle your
                                 transactions in person, visit one of our
                                 Investor Centers and a representative can help
                                 you open an account, make additional
                                 investments, sell or exchange shares. Here are
                                 the Investor Centers you can visit

                                 4500 Main Street                        4917 Town Center Dr.
                                 Kansas City, Missouri                   Leawood, Kansas

                                 1665 Charleston Road                    2000 S. Colorado Blvd.
                                 Mountain View, California               Denver, Colorado
</TABLE>





Minimum Initial Investment Amounts

To open an account the minimum investments are as follows for:
- --------------------------------------------------------------------------------
Individual or Joint                                                       $2,500
Traditional IRA                                                           $1,000
Roth IRA                                                                  $1,000
Education IRA                                                               $500
UGMA/UTMA                                                                 $1,000
403(b)                                                                No minimum

Redemption of shares in low-balance accounts

If your account falls below the minimum  balance we will notify you and give you
90 days to meet the minimum or, for most types of equity accounts,  to establish
an  automatic  monthly  investment.  If you do not meet the  deadline,  American
Century  will  redeem the shares in the  account  and send the  proceeds to your
address of record.

Special requirements for large redemptions

The fund has elected to be governed by Rule 18f-1 under the  Investment  Company
Act,  which  obligates  the  fund to make  certain  redemptions  in  cash.  This
requirement applies when a shareholder redeems,  during any 90-day period, up to
the lesser of  $250,000  or 1% of the assets of the fund.  Although  we normally
will pay  redemptions  in excess of this  limitation in cash,  American  Century
reserves the right under unusual  circumstances  to honor these  redemptions  in
kind by making payment in whole or in part in readily marketable securities.

If we make payment in securities, we will value the securities,  selected by the
fund  managers,  in the same manner as we do in  computing  the fund's net asset
value.  We will provide these  securities to the redeeming  plan  participant or
financial  intermediary in lieu of cash without prior notice. If your redemption
would  exceed this limit and you would like to avoid  being paid in  securities,
please provide us with an  unconditional  instruction to redeem at least 15 days
prior  to the  date  on  which  the  redemption  transaction  is to  occur.  The
instruction  must  specify the dollar  amount or number of shares to be redeemed
and the date of the transaction.  This minimizes the effect of the redemption on
the fund and its remaining shareholders.

While the fund reserves the right to redeem shares through a redemption-in-kind,
we do not expect to exercise this option unless it has an unusually low level of
cash to meet redemptions and/or is experiencing unusually strong demands for its
cash. Such a demand might be caused,  for example,  by extreme market conditions
that result in an abnormally high level of redemption requests concentrated in a
short  period  of  time.  Absent  these  or  similar  circumstances,  we  expect
redemptions  in excess of $250,000 to be paid in cash in any fund with assets of
more than $50  million if total  redemptions  from any one account in any 90-day
period do not exceed one-half of 1% of the total assets of the fund.





Share Price and Distributions

Share Price

We determine the net asset value of the fund as of the close of regular  trading
on the New York Stock  Exchange  (usually 4 p.m.  Eastern  time) on each day the
Exchange is open. On days when the Exchange is not open, we do not calculate the
net asset value.  The net asset value of the fund share is the current  value of
its  investments,  minus any  liabilities,  divided by the number of fund shares
outstanding.

If current prices of securities  owned by a fund are not readily  available from
an independent  pricing  service,  the advisor may determine their fair value in
accordance with procedures adopted by the fund's Board of Directors.  Trading of
securities  in foreign  markets may not take place on every day the  Exchange is
open.  Also,  trading in some  foreign  markets  may take place on  weekends  or
holidays when the fund's net asset value is not calculated. So, the value of the
fund's  portfolio may be affected on days when you can't  purchase or redeem its
shares.

We will price your purchase,  exchange or redemption at the net asset value next
determined after we receive your transaction request in good order.

Distributions

Federal tax laws require the fund to make  distributions  to its shareholders in
order  to  qualify  as a  "regulated  investment  company."  Qualification  as a
regulated investment company means that the fund will not be subject to state or
federal income tax in amounts distributed.  The distributions  generally consist
of dividends and interest  received,  as well as capital  gains  realized on the
sale of  investment  securities.  The fund pays  distributions  from net  income
monthly and generally pays  distributions  of capital gains, if any, once a year
in December. It may make more frequent distributions if necessary to comply with
Internal Revenue Code provisions.

Participants in employer-sponsored retirement or savings plans must reinvest all
distributions.  For shareholders  investing  through taxable  accounts,  we will
reinvest  distributions unless you elect to receive them in cash. Please consult
our Investor Services Guide for further information regarding  distributions and
your distribution options.

**********LEFT MARGIN CALLOUTS

The net asset value of the fund is the price of its shares.

Capital gains is the increase in value of a capital asset,  such as stock,  from
the time it is  purchased.  Tax becomes  due on capital  gains once the asset is
sold.

**********END LEFT MARGIN CALLOUTS




Taxes

The tax consequences of owning shares of the fund will vary depending on whether
you own them through a taxable or tax-deferred  account. Tax consequences result
from  distributions  by the fund of dividend and interest income it has received
and capital gains it has generated  through its  investment  activities,  and by
sales of fund shares by  investors  after the net asset value has  increased  or
decreased.

Tax-Deferred Accounts

If you purchase fund shares through a tax-deferred  account, such as an IRA or a
qualified  employer-sponsored  retirement  or savings  plan,  income and capital
gains  distributions  usually will not be subject to current taxation,  but will
accumulate in your account  under the plan on a  tax-deferred  basis.  Likewise,
moving  from one fund to  another  fund  within a plan or  tax-deferred  account
generally  will  not  cause  you to be  taxed.  For  information  about  the tax
consequences of making  purchases or withdrawals  through an employer  sponsored
retirement  or  savings  plan,  or  through  an IRA,  please  consult  your plan
administrator, your summary plan description or a professional tax advisor.

Taxable Accounts

If you own fund shares through a taxable account,  distributions by the fund and
sales by you of fund shares may cause you to be taxed.

Taxability of Distributions

Distributions  may  consist of income  earned by the fund from  sources  such as
dividends  and  interest,  or  capital  gains  generated  from  the sale of fund
investments.  Distributions of income are taxed as ordinary income. Distribution
of capital gains are classified  either as short term or long term and are taxed
as follows:

Type of Distribution       Tax rate for 15% Bracket  Tax rate for 28% Bracket or
                                                                above
- ------------------------ -------------------------- ----------------------------
Short-term capital gains     Ordinary income rate       Ordinary income rate
Long-term capital gains               10%                        20%

The tax status of any  distribution  of capital  gains is determined by how long
the fund held the  underlying  security that was sold,  not by how long you have
been  invested  in the  fund or  whether  you  reinvest  your  distributions  in
additional  shares  or take them as  income.  American  Century  will send you a
detail of the tax  status of fund  distributions  for each  calendar  year in an
annual tax statement from the fund.

Distributions  also may be subject to state and local taxes.  Because everyone's
tax situation is unique,  always  consult your tax  professional  about federal,
state and local tax consequences.

Taxes on Transactions

Your  redemptions -- including  exchanges to other American Century funds -- are
subject to capital  gains tax.  The table above can provide a general  guide for
your potential tax liability when selling or exchanging fund shares. "Short-term
capital  gains" are gains on fund  shares  held less than or equal to 12 months.
"Long-term capital gains" are gains on fund shares held for more than 12 months.
If your  shares  decrease  in value,  their sale or  exchange  will  result in a
long-term or short-term capital loss.

**********LEFT MARGIN CALLOUTS

*    Buying a Dividend

     Purchasing  fund shares in a taxable  account shortly before a distribution
     is sometimes  known as "buying a dividend." In taxable  accounts,  you must
     pay income taxes on the  distribution  whether you take the distribution in
     cash or  reinvest  it.  In  addition,  you  will  have to pay  taxes on the
     distribution whether the value of your investment  decreased,  increased or
     remained  the same after you bought the fund  shares.  The risk in buying a
     dividend is that a fund's  portfolio may build up taxable gains  throughout
     the period covered by a  distribution,  as securities are sold at a profit.
     We distribute those gains to you, after subtracting any losses, even if you
     did not own the shares when the gains occurred. Thus if you buy a dividend,
     you incur the full tax liability of the  distribution  period,  but you may
     not enjoy the full benefit of the gains realized in the fund's portfolio.

**********END LEFT MARGIN CALLOUTS





Financial Highlights

Understanding the Financial Highlights

This table  itemizes what  contributed  to the changes in share price during the
period,  and compares  this to changes over the last five fiscal years (or less,
if the share class is not five years old).

On a per-share basis, it includes:

o        share price at the beginning of the period
o        investment income and capital gains or losses
o        distributions of income and capital gains paid to shareholders
o        share price at the end of the period

It also includes some key statistics for the period:

o    Total Return--the  overall  percentage of return of the fund,  assuming the
     reinvestment of all distributions

o    Expense Ratio--operating expenses as a percentage of average net assets

o    Net Income  Ratio--net  investment  income as a  percentage  of average net
     assets

o    Portfolio  Turnover--the  percentage  of  the  fund's  buying  and  selling
     activity

The  Financial  Highlights  for the fiscal years ended October 31, 1997 and 1998
have been audited by Deloitte & Touche LLP, independent  auditors.  Their report
is in the fund's annual  report,  which is  incorporated  by reference  into the
Statement of Additional Information, and is available upon request.



<TABLE>
<CAPTION>
New Opportunities
                                                           1998          1997   
PER-SHARE DATA
<S>                                                  <C>          <C>
Net Asset Value, Beginning of Year.........
                                                     ------------- --------------
Income from Investment Operations
   Net Investment Income (dividends).......
   Net Realized and Unrealized Gain (Loss) on
   Investment Transactions.................
                                                     ------------- --------------
   Total From Investment Operations........
                                                     ------------- --------------
Less Distributions
   From Net Investment Income (dividends)..
                                                     ------------- --------------
                                                     ------------- --------------
Net Asset Value, End of Year...............
                                                     ------------- --------------
Total Return(1)............................

RATIOS/SUPPLEMENTAL DATA

Ratio of Operating Expenses to 
   Average Net Assets ..................... 
Ratio of Net Investment Income to 
   Average Net Assets ..................... 
Net Assets, End of Year (in thousands).....

(1) Total return assumes reinvestment of dividends and capital gains, if any.
</TABLE>



At Your Service

Make virtually any transaction online

The next time you're  surfing the Net,  stop by American  Century's  Web site at
www.americancentury.com.   Current   shareholders   can  open  new  accounts  by
exchanging  shares  (provided  the account  registration  does not  change).  In
addition,  you can view  transactions and check your account  balances.  You can
also sign up to  receive  annual  updates  to your  prospectuses  and  financial
reports via the Net instead of through the mail.

Expand your investment options with American Century Brokerage

If  you're  looking  for a wide  range  of  investment  options  - from  trading
individual  securities  to  purchasing  mutual  funds  offered  by  hundreds  of
companies  - look to  American  Century  Brokerage.  With  this  new  investment
service, you can take advantage of 24-hour trading on our Web site or TeleSelect
automated  telephone  service.  Or, if you prefer,  you can do business directly
with a Brokerage Associate.

With service features including a Gold MasterCard(R)  ATM/Debit Card,  unlimited
CheckWriting  and cost basis reporting (all available with the American  Century
Brokerage Access  AccountSM),  our brokerage  service can simplify your life now
while you  prepare  financially  for the years to come.  For  information  about
opening a brokerage account, please call an American Century Brokerage Associate
at 1-888-345-2071.

Send your distributions straight to the bank

If you opt to have your dividend and capital gain  distributions  paid to you in
cash rather than  reinvesting  them into your  account,  consider an  electronic
transfer  to your  bank  account.  It will save you time and a trip to the bank.
Call an Investor Services Representative for more information.

Check out our library

Are you looking for additional information on bond basics? Or, are you trying to
decide if municipal bonds have a place in your portfolio? Perhaps you would like
to test your knowledge of bonds and how they work. These are subjects covered in
our Financial FYI library that are  available to you.  Financial  FYI, a growing
library of one-page  resources,  clearly and quickly explains various  financial
subjects to help you make informed decisions.  To request one of these articles,
call an Investor Services Representative.




More information about the funds is contained in these documents:

Annual and Semiannual Reports.  These reports contain more information about the
fund's  investments  and the market  conditions and investment  strategies  that
significantly  affected the fund's  performance during the most recent six-month
fiscal period.

Statement of Additional  Information.  The SAI contains a more  detailed,  legal
description  of the funds'  operations,  investment  restrictions,  policies and
practices. The SAI is incorporated by reference into this Prospectus. This means
that it is legally part of this Prospectus, even if you don't request a copy.

You also can get information about the funds (including the SAI) from the SEC.

v    In person.            SEC Public Reference Room
                           Washington, D.C.
                           Call 1-800-SEC-0330 for location and hours.

v    On the internet.      www.sec.gov.

v    By mail.              Public Reference Section
                           Washington, D.C.
                           20549-6009
                           The SEC will charge a fee for  copying the  documents
                           you request.


American Century Investments
P.O. Box 419200
Kansas City, Missouri 64141-6200

Investor Services
1-800-345-2021 or 816-531-5575

Automated Information Line
1-800-345-8765

Fax
816-340-7962

www.americancentury.com

Telecommunications Device for the Deaf
1-800-634-4113 or 816-444-3485

Corporate, Not-for-Profit, Keogh,
SEP-, SARSEP-, SIMPLE-IRA and 403(b) Services
1-800-345-3533

Investment Company Act File No. 811-0816
<PAGE>
[american century logo(reg.sm)]
American
Century


PROSPECTUS

January 29, 1999
- --------------------------------------------------------------------------------

AMERICAN CENTURY

Growth
Ultra
Select
Vista
Heritage

Advisor Class

The  Securities and Exchange  Commission  has not approved or disapproved  these
securities or determined if this Prospectus is accurate or complete.  Anyone who
tells you otherwise is committing a crime.

Distributed by Funds Distributor, Inc.





Reading a prospectus doesn't have to be a chore. We've done the hard work so you
can focus on what's  important--learning about the funds. Take a look inside and
you'll see this  prospectus  is  different  from  others.  It takes a  clear-cut
approach to fund information.

Here's what you'll find:

o    The funds' primary investments and risks

o    A description of who may or may not want to invest in the funds

o    Fund performance,  including returns for each year, best and worst quarters
     and average annual returns compared to the funds' benchmarks

o    An overview of ways to best manage your accounts

o    Helpful tips and definitions of key investment terms

Whether  you're a current  investor or  investing  in mutual funds for the first
time, this prospectus will give you a clear  understanding  of the funds. If you
have questions,  our Investor Services Representatives are available weekdays, 7
a.m. to 7 p.m.  Central time. Our toll-free  number is  1-800-345-2021.  We look
forward to helping you achieve your financial goals.

                                      Sincerely,


                                      Mark Killen
                                      Senior Vice President
                                      American Century Investment Services, Inc.









Table of Contents

An Overview of the Funds.........................................2

Fees and Expenses................................................3

Detailed Information about the Funds.............................4

         Growth
         Ultra
         Select
         Vista
         Heritage

Management.......................................................7

Investing with American Century.................................XX

Share Price and Distributions...................................XX

Taxes...........................................................XX

Multiple Class Information......................................XX

Financial Highlights............................................XX

Performance Information of Other Class..........................XX

Fund Reference
                  Fund Code       Ticker
- -------------------------------------------------
Growth            020             TWRAX
Ultra             022             TWUAX
Select            021             TWCAX
Vista             024             TWVAX
Heritage          030             ATHAX
- -------------------------------------------------

**********LEFT MARGIN CALLOUTS

Throughout  this  book  you'll  find  definitions  of key  investment  terms and
phrases.  When you see a word printed in green italics,  look for its definition
in the left margin.

*........This symbol highlights special information and helpful tips.

**********END LEFT MARGIN CALLOUTS








An Overview of the Funds

What are the funds' investment goals?

These funds seek long-term capital growth.

What are the funds' primary investment strategies and principal risks?

The funds look for common stocks of growing companies. The basis of the strategy
used by these  funds is that,  over the long  term,  stocks  of  companies  with
earnings and revenue  growth have a greater  than average  chance to increase in
value over time. A more  detailed  description  of American  Century's  "growth"
investment style begins on page xx.

The funds' principal risks include:

                                                                                
                                                                                
o Market Risk       The value of a fund's  shares  will go up and down  based on
                    the  performance of the companies  whose  securities it owns
                    and other factors affecting the securities market generally.

o Price Volatility  The value of the funds' shares may  fluctuate  significantly
                    in the short term.

o Principal Loss    As with all mutual funds, if you sell your shares when their
                    value is less than the price you paid, you will lose money.

Who may want to invest in the funds?

The funds may be a good investment if you are

0    seeking long-term capital growth from your investment

0    comfortable with the funds' short-term price volatility

0    comfortable with the risks associated with the funds' investment strategy

0    investing through an IRA or other tax-advantaged retirement plan

Who may not want to invest in the funds?

The funds may not be a good investment if you are

0    seeking current income from your investment

0    investing for a short period of time

0    uncomfortable with short-term volatility in the value of your investment

**********LEFT MARGIN CALLOUTS


*    An  investment  in the funds is not a bank  deposit  and is not  insured or
     guaranteed  by the  Federal  Deposit  Insurance  Corporation  or any  other
     government agency.

**********END LEFT MARGIN CALLOUTS







Fees and Expenses

There are no sales loads or fees or other charges

0    to buy fund shares directly from American Century

0    to reinvest dividends in additional shares

0    to exchange into the Advisor Class shares of other American Century funds.

The following  tables describe the fees and expenses that you may pay if you buy
and hold shares of the funds.

<TABLE>
Annual Operating Expenses (expenses that are deducted from fund assets)
             Management Fee      Distribution and Service    Other Expenses2    Total Annual Fund
                                 (12b-1) Fees1                                  Operating Expenses
<S>          <C>                 <C>                         <C>                <C>  
Growth       0.75%               0.50%                       0.00%              1.25%
Ultra        0.75%               0.50%                       0.00%              1.25%
Select       0.75%               0.50%                       0.00%              1.25%
Vista        0.75%               0.50%                       0.00%              1.25%
Heritage     0.75%               0.50%                       0.00%              1.25%
</TABLE>

1    The 12b-1 fee is designed to permit  investors  to purchase  Advisor  Class
     shares  through  broker-dealers,   banks,  insurance  companies  and  other
     financial  intermediaries.  A portion of the fee is used to compensate them
     for ongoing recordkeeping and administrative  services that would otherwise
     be  performed  by an  affiliate  of the  manager,  and a portion is used to
     compensate  them for  distribution  and  other  shareholder  services.  See
     "Service and Distribution Fees," page xx.

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

Example of Hypothetical Fund Costs

The  examples in the table  below are  intended to help you compare the costs of
investing in a fund with those of other mutual funds. Assuming you ...

o        invest $10,000 in the fund

o        redeem all of your shares at the end of the periods shown below

o        earn a 5% return each year and

o        incur the same operating expenses shown above

 ... your cost of investing in the fund would be:

               1 Year     3 Years    5 Years   10 Years
Growth         $13        $40        $68       $150
Ultra          $13        $40        $68       $150
Select         $13        $40        $68       $150
Vista          $13        $40        $68       $150
Heritage       $13        $40        $68       $150

**********LEFT MARGIN CALLOUTS

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

**********END LEFT MARGIN CALLOUTS





Detailed Information about the Funds

Growth
Ultra
Select
Vista
Heritage

What are the funds' investment objectives?

These funds seek  long-term  capital  growth.  This is a fundamental  policy and
cannot be changed without shareholder approval.

How do the funds pursue their investment objectives?

The fund managers  look for stocks of companies  that they believe will increase
in value over time,  using a growth  investment  strategy  developed by American
Century.  This strategy  looks for companies with earnings and revenues that are
not only growing, but growing at a successively  faster, or accelerating,  pace.
This  strategy is based on the premise that,  over the long term,  the stocks of
companies with  accelerating  earnings and revenues have a  greater-than-average
chance to increase in value.

The  managers  use a bottom-up  approach to select  stocks to buy for the funds.
That means they first look for strong,  growing  companies to invest in,  rather
than simply buying any company in a growing  industry or sector.  Using American
Century's extensive computer database,  the managers track financial information
for  thousands of companies to identify  trends in the  companies'  earnings and
revenues. This information is used to help the fund managers select or decide to
continue to hold the stocks of  companies  they  believe will be able to sustain
accelerating growth, and to sell stocks of companies whose growth begins to slow
down.

Although most of the funds' assets will be invested in U.S. companies,  there is
no limit on the amount of assets the funds can invest in foreign companies. Most
of the funds' foreign investments are in companies located and doing business in
developed countries. Investments in foreign securities present some unique risks
that are more fully described in the funds' Statement of Additional Information.

**********LEFT MARGIN CALLOUT

*    Accelerating  growth is shown,  for example,  by growth that is faster this
     quarter than last or faster this year than the year before.

**********END LEFT MARGIN CALLOUT

The fund  managers do not attempt to time the  market.  Instead,  they intend to
keep the funds  essentially  fully invested in stocks regardless of the movement
of stock prices  generally.  When the managers  believe that it is prudent,  the
funds may invest a portion of their assets in  convertible  securities,  foreign
securities, short-term instruments,  non-leveraged stock index futures contracts
and  other  similar  securities.  Stock  index  futures  contracts,  a  type  of
derivative  security,  can help the  funds'  cash  assets  remain  liquid  while
performing  more like  stocks.  The funds have a policy  governing  stock  index
futures and similar derivative securities to help manage the risk of these types
of investments.  For example,  the managers cannot leverage the funds' assets by
investing in a derivative  security.  A complete  description of the derivatives
policy is included in the Statement of Additional Information.

Additional information about the funds' investments is available in their annual
and  semiannual  reports.  In these  reports you will find a  discussion  of the
market  conditions and investment  strategies  that  significantly  affected the
funds'  performance  during the most recent six-month period.  You may get these
reports at no cost by calling us.


What kinds of securities do the funds buy?

The funds will usually purchase common stocks of U.S. and foreign companies, but
they can  purchase  other types of  securities,  as well,  such as domestic  and
foreign preferred stocks, convertible securities,  equity equivalent securities,
notes,  bonds and other debt securities.  The funds limit their purchase of debt
securities to investment-grade obligations.

What is the difference between the funds?

0    Growth,  Ultra and Select  generally invest in larger  companies,  although
     they may purchase companies of any size.  Companies  considered to be large
     generally have a market capitalization in excess of $5 billion.

0    Vista and Heritage  generally invest in medium-sized and smaller companies,
     although they may purchase companies of any size.  Companies  considered to
     be medium sized generally have a market  capitalization  between $1 billion
     and  $5  billion,   and   smaller   companies   generally   have  a  market
     capitalization below $1 billion.

0    Eighty  percent  (80%) of  Select's  and 60% of  Heritage's  assets must be
     invested in securities  of companies  that pay regular  dividends,  or have
     committed to pay dividends,  or otherwise produce income. This reflects the
     funds'  strategy to invest most of their assets in stocks of companies that
     are successful enough to pay dividends.  The amount of dividends may not be
     significant,  however, since stocks are not picked based upon the amount of
     income they  produce.  The  remaining 20% of Select's and 40% of Heritage's
     assets may be invested in any other  permissible  securities  that the fund
     managers believe will help the funds achieve their objectives.

**********LEFT MARGIN CALLOUT

     Market  capitalization  means  the value of a  company,  as  determined  by
multiplying the number of shares of its stock  outstanding by its current market
price per share.

**********END LEFT MARGIN CALLOUT

What are the primary risks of investing in the funds?

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

o    The fund managers may buy a large amount of a company's stock quickly,  and
     often will  dispose of it quickly if the  company's  earnings  or  revenues
     decline.  While the managers  believe this  strategy  provides  substantial
     appreciation  potential over the long term, in the short term it can create
     a significant  amount of share price  volatility.  This  volatility  can be
     greater than that of the average stock fund.

o    As with all funds, at any given time, the value of your shares 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.

o    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 funds' style,  the funds' gains may not be as big as, or their
     losses may be bigger than,  other equity funds using  different  investment
     styles.

o    Foreign securities can have certain unique risks, including fluctuations in
     currency  exchange  rates,  unstable  political  and  economic  structures,
     reduced  availability of public  information and lack of uniform  financial
     reporting  and  regulatory  practices  similar  to those that apply to U.S.
     issuers.  These  factors  make  investing in foreign  securities  generally
     riskier than  investing in U.S.  stocks.  To the extent the fund invests in
     foreign securities, the overall risk of the fund could be affected.

These funds are intended for investors who seek long-term capital growth through
an  aggressive  equity fund and who are  willing to accept the risks  associated
with the funds' investment strategies.






Fund Performance History

The  performance  information  on this page is designed to help you see how fund
returns can vary.  Keep in mind that past  performance  does not predict how the
funds will perform in the future.

Annual Total Returns

The following bar chart shows the performance of the funds' Advisor Class shares
for each full year in the life of the class if less than 10 years.  It indicates
the volatility of the historical returns from year to year.

[GRAPH DEPICTING 10 YEAR ANNUAL TOTAL RETURNS FOR GROWTH,  ULTRA,  SELECT, VISTA
AND HERITAGE SINCE INCEPTION; UPDATED FIGURES NOT AVAILABLE]

Highest and Lowest Quarterly Returns
The highest and lowest returns of the funds' Advisor Class shares for a calendar
quarter during the life of the class if less than 10 years are provided below to
indicate the historical  short-term  volatility.  Shareholders  should be aware,
however, that these funds are intended for investors with a long-term investment
horizon and are not managed for short-term results.

[GRAPH DEPICTING HIGHEST AND LOWEST RETURNS FOR GROWTH, ULTRA, SELECT, VISTA AND
HERITAGE SINCE INCEPTION; UPDATED FIGURES NOT AVAILABLE]

Average Annual Returns

The following table shows the average annual returns of the funds' Advisor Class
shares for the periods  indicated  during the life of the class.  The benchmarks
are included for long-term performance comparison.  The benchmarks are unmanaged
indices that have no operating costs.

                                1 year       Since Inception*
- ------------------------------------------------------------------
Growth                          XXX%         XXX%
Russell 1000 Growth Index       XXX%         XXX%
- ------------------------------------------------------------------
Ultra                           XXX%         XXX%
S&P 500 Index                   XXX%         XXX%
- ------------------------------------------------------------------
Select                          XXX%         XXX%
S&P 500 Index                   XXX%         XXX%
- ------------------------------------------------------------------
Vista                           XXX%         XXX%
Russell 2500 Growth Index       XXX%         XXX%
- ------------------------------------------------------------------
Heritage                        XXX%         XXX%
S&P Mid Cap 400 Index           XXX%         XXX%
- ------------------------------------------------------------------
*The  inception  dates for the Advisor  Class of the funds are  Growth,  June 4,
1997;  Select,  August 7, 1997; Ultra and Vista,  October 1, 1996; and Heritage,
July 11, 1997.

**********LEFT MARGIN CALLOUTS

The funds' total  returns for the period from January 1, 1998,  to September 30,
1998, are:

Growth               XXX%
Ultra                XXX%
Select               XXX%
Vista                XXX%
Heritage             XXX%

*    For current  performance  information,  please call us at 1-800-345-2021 or
     visit American Century's Web site at www.americancentury.com.

**********END LEFT MARGIN CALLOUTS

Performance Information of Other Class
The original class of shares of the fund was the Investor  Class of shares.  The
Advisor  Class  was not  established  until  1996.  For  information  about  the
historical performance of the original class of shares, see page xx.






Management

Who manages the funds?

The Board of Directors,  investment  advisor and fund  management  team play key
roles in the management of the funds.

The Board of Directors

The Board of Directors  oversees the  management of the funds and meets at least
quarterly  to  review  reports  about  fund  operations.  Although  the Board of
Directors  does not manage the funds,  it has hired an investment  advisor to do
so. More than half of the Directors are independent of the funds' advisor,  that
is, they are not employed by and have no financial interest in the advisor.

The Investment Advisor

The funds' investment  advisor is American Century Investment  Management,  Inc.
The advisor has been  managing  mutual  funds  since 1958.  American  Century is
headquartered at 4500 Main Street, Kansas City, Missouri 64111.

The advisor is responsible  for managing the investment  portfolios of the funds
and directing the purchase and sale of their investment securities.  The advisor
also arranges for transfer agency,  custody and all other services necessary for
the funds to operate.

For the services it provided to the funds during their most recent  fiscal year,
the advisor received a unified management fee of 1.25% of the average net assets
of the Advisor Class of shares of the fund.  The amount of the management fee is
calculated on a  class-by-class  basis daily and paid monthly.  Out of that fee,
the  advisor  paid all  expenses  of  managing  and  operating  the fund  except
brokerage  expenses,  taxes,  interest,  fees and  expenses  of the  independent
Directors (including legal counsel fees) and extraordinary expenses.






The Fund Management Teams

The advisor uses teams of portfolio  managers,  assistant portfolio managers and
analysts to manage the funds.  Teams meet regularly to review portfolio holdings
and to discuss purchase and sale activity.  Team members buy and sell securities
for a fund as they  see fit,  guided  by the  fund's  investment  objective  and
strategy.

Portfolio Manager members of the investment teams are identified below:

Growth
C. Kim Goodwin
Ms. Goodwin, Vice President and Portfolio Manager, has been a member of the team
that manages  Growth since  joining  American  Century in October  1997.  Before
joining  American  Century,  she served as Senior Vice  President  and Portfolio
Manager at Putnam Investments from May 1996 to September 1997 and Vice President
and  Portfolio  Manager at  Prudential  Investments  from February 1993 to April
1996. She has a bachelor of arts from Princeton University and an MBA in finance
from the University of Texas.

Gregory J. Woodhams
Mr.  Woodhams,  Portfolio  Manager,  has been a member of the team that  manages
Growth  since he joined  American  Century in  September  1997 as an  Investment
Analyst.  Mr. Woodhams was promoted to Portfolio  Manager for the Growth team in
May 1998.  Before  joining  American  Century,  he served as Vice  President and
Director of Equity  Research for Texas  Commerce  Bank,  a  subsidiary  of Chase
Manhattan Bank. He has a bachelor's degree in economics from Rice University and
an  MBA in  economics  from  the  University  of  Wisconsin.  He is a  Chartered
Financial Analyst.

Ultra
James E. Stowers III
Mr. Stowers,  Chief  Executive  Officer and Portfolio  Manager,  joined American
Century  as  a   portfolio   manager  of  Ultra  and  other   American   Century
growth-oriented  funds in 1981.  He has a  bachelor's  degree  in  finance  from
Arizona State University.

John R. Sykora
Mr. Sykora, Vice President and Portfolio Manager,  has been a member of the team
that manages Ultra since August 1997. He joined American  Century in May 1994 as
an Investment Analyst. Before joining American Century, he served as a Financial
Analyst for Business Men's Assurance Company of America,  Kansas City,  Missouri
from August 1993 to April 1994. He has a bachelor's degree in accounting finance
and an  MBA  in  finance  from  Michigan  State  University.  He is a  Chartered
Financial Analyst.

Bruce A. Wimberly
Mr.  Wimberly,  Vice President and Portfolio  Manager,  has been a member of the
team that manages Ultra since July 1996. He joined American Century in September
1994 as an Investment  Analyst.  Before joining  American  Century,  he attended
Kellogg Graduate School of Management,  Northwestern University from August 1992
to August  1994,  where he  obtained  his MBA.  He has a  bachelor  of arts from
Middlebury  College  and an MBA in  finance  from  Kellogg  Graduate  School  of
Management.

Select
Jean C. Ledford
Ms. Ledford, Vice President and Portfolio Manager, has been a member of the team
that manages  Select since joining  American  Century in January 1997.  Prior to
joining American Century, she worked for the State of Wisconsin Investment Board
as an  Investment  Director  from 1994 to 1996,  and as an Assistant  Investment
Director  from 1983 to 1994.  She has a  bachelor  of arts and an MBA in finance
from the University of Wisconsin. She is a Chartered Financial Analyst.

Richard S. Welsh
Mr. Welsh,  Portfolio Manager, has been a member of the team that manages Select
since May 1998. He joined American  Century in August 1994 as an Equity Research
Analyst and was promoted to Investment Analyst in January 1997. Prior to joining
American  Century,  he served  as Equity  Research  Analyst  for Brown  Brothers
Harriman  &  Company.  He has a  bachelor's  degree  in  economics  from  Boston
University and an MBA in finance and accounting from New York University.

Vista
Arnold K. Douville
Mr.  Douville,  Vice President and Portfolio  Manager,  has been a member of the
team that manages Vista since joining American Century in November 1997.  Before
joining  American  Century,  he served as Senior  Portfolio  Manager  for Munder
Capital  Management  from  September  1989 to October  1997. He has a bachelor's
degree in  economics  from the U.S.  Air Force  Academy  and an MBA in  finance,
statistics and economics from the University of Chicago.

Glenn A. Fogle
Mr. Fogle, Vice President and Portfolio  Manager,  has been a member of the team
that manages  Vista since March 1993.  He joined  American  Century in September
1990 as an Investment  Analyst.  He has a bachelor of arts and an MBA in finance
from Texas Christian University. He is a Chartered Financial Analyst.

Heritage
Harold S. Bradley
Mr. Bradley, Vice President and Portfolio Manager, has been a member of the team
that manages  Heritage since March 1998. He joined American  Century in 1988 and
for the past 10 years,  has  managed  the global  equity,  futures  and  foreign
exchange trading activities for American Century. He has a bachelor of arts from
Marquette University.

Linda K. Peterson
Ms.  Peterson,  Portfolio  Manager,  has been a member of the team that  manages
Heritage since March 1998. She joined American Century in 1986. She served as an
Investment  Analyst  for  American  Century's   growth-oriented   equity  funds,
including  Heritage,  from April 1994 until  February 1998. She has a bachelor's
degree in  finance  from the  University  of  Northern  Iowa and an MBA from the
University of Missouri-Kansas City. She is a Chartered Financial Analyst.

**********LEFT MARGIN CALLOUTS

*    Code of Ethics

     American Century has a Code of Ethics designed to ensure that the interests
     of fund shareholders come before the interests of the people who manage the
     funds.  Among  other  provisions,  the Code of Ethics  prohibits  portfolio
     managers  and other  investment  personnel  from  buying  securities  in an
     initial public offering or from profiting from the purchase and sale of the
     same  security  within 60 calendar  days.  In addition,  the Code of Ethics
     requires  portfolio managers and other employees with access to information
     about the purchase or sale of  securities  by the funds to obtain  approval
     before executing permitted personal trades.

**********END LEFT MARGIN CALLOUTS






Fundamental Investment Policies

Fundamental  investment  policies  contained  in  the  Statement  of  Additional
Information  and the  investment  objectives  of the  funds  may not be  changed
without a shareholder vote. The Board of Directors may change any other policies
and investment strategies.

Year 2000 Issues

Many of the world's  computer  systems  currently  cannot properly  recognize or
process date-sensitive information relating to the Year 2000 and beyond. Because
this may impact the computer systems of various American  Century-affiliated and
external service providers for the funds,  American Century formally initiated a
Year 2000  readiness  project in July 1997.  It  involves a team of  information
technology  professionals  assisted  by  outside  consultants  and  guided  by a
senior-level steering committee.  The team's goal is to assess the impact of the
Year 2000 on  American  Century's  systems,  renovate  or  replace  noncompliant
critical systems and test those systems. In addition,  the team has been working
to gather  information  about the Year 2000  efforts of the funds'  other  major
service providers.  Although American Century believes its critical systems will
function  properly in the Year 2000, this is not  guaranteed.  If the efforts of
American  Century or its external  service  providers  are not  successful,  the
funds'  business,  particularly  the provision of shareholder  services,  may be
hampered.

In  addition,  the  issuers  of  securities  the funds own could  have Year 2000
computer  problems.  These problems could  negatively  affect the value of their
securities, which, in turn, could impact the funds' performance. The advisor has
established a process to gather publicly  available  information  about the Year
2000  readiness  of these  issuers.  However,  this  process may not uncover all
relevant  information,  and the  information  gathered  may not be complete  and
accurate.  Moreover, an issuer's Year 2000 readiness is only one of many factors
the fund  managers  may consider  when making  investment  decisions,  and other
factors may receive greater weight.






Investing With American Century
Eligibility for Advisor Class Shares
The  Advisor  Class  shares  are  intended  for  purchase  by   participants  in
employer-sponsored retirement or savings plans and for persons purchasing shares
through   broker-dealers,   banks,   insurance  companies  and  other  financial
intermediaries that provide various administrative and distribution services.

Investing Through Financial Intermediaries

If you do business  with us through a  financial  intermediary  or a  retirement
plan,  your ability to purchase,  exchange and redeem  shares will depend on the
policies of that entity. Some policy differences may include

o        minimum investment requirements
o        exchange policies
o        fund choices
o        cut-off time for investments

Please  contact  your  financial  intermediary  or plan  sponsor  for a complete
description  of its policies.  Copies of the funds' annual  reports,  semiannual
reports  and  Statements  of  Additional  Information  are  available  from your
intermediary or plan sponsor.

Certain  financial   intermediaries  perform  recordkeeping  and  administrative
services  for their  clients  that would  otherwise  be  performed  by  American
Century's transfer agent. In some  circumstances,  American Century will pay the
service provider a fee for performing those services.

Although  transactions in fund shares may be made directly with American Century
at no charge,  you also may purchase,  redeem and exchange  fund shares  through
financial  intermediaries that charge a transaction-based or other fee for their
services. Those charges are retained by the intermediary and are not shared with
American Century or the funds.

American Century has contracts with certain  financial  intermediaries  in which
they represent that they will track the time investment orders are received. The
funds have  authorized  those  intermediaries  to accept  orders on each  fund's
behalf up to the time net asset value is determined.  Such orders will be priced
at the net asset value next determined after acceptance of the order on a fund's
behalf.

Special requirements for large redemptions

The funds have elected to be governed by Rule 18f-1 under the Investment Company
Act,  which  obligates  each  fund to make  certain  redemptions  in cash.  This
requirement applies when a shareholder redeems,  during any 90-day period, up to
the lesser of  $250,000  or 1% of the assets of the fund.  Although  we normally
will pay  redemptions  in excess of this  limitation in cash,  American  Century
reserves the right under unusual  circumstances  to honor these  redemptions  in
kind by making payment in whole or in part in readily marketable securities.

If we make payment in securities, we will value the securities,  selected by the
fund,  in the same manner as we do in computing  the fund's net asset value.  We
will provide these  securities to the redeeming  plan  participant  or financial
intermediary  in lieu of cash without prior  notice.  If your  redemption  would
exceed this limit and you would like to avoid being paid in  securities,  please
provide us with an unconditional instruction to redeem at least 15 days prior to
the date on which the redemption  transaction is to occur.  The instruction must
specify the dollar amount or number of shares to be redeemed and the date of the
transaction.  This  minimizes  the effect of the  redemption on the fund and its
remaining shareholders.

While  each  fund   reserves   the  right  to  redeem  fund  shares   through  a
redemption-in-kind,  we do not expect to exercise  this option unless a fund has
an  unusually  low  level of cash to meet  redemptions  and/or  is  experiencing
unusually  strong  demands  for its cash.  Such a demand  might be  caused,  for
example, by extreme market conditions that result in an abnormally high level of
redemption  requests  concentrated  in a short  period of time.  Absent these or
similar circumstances, we expect redemptions in excess of $250,000 to be paid in
cash in any fund with assets of more than $50 million if total  redemptions from
any one account in any 90-day  period do not exceed  one-half of 1% of the total
assets of the fund.

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*    Financial intermediaries include banks, broker-dealers, insurance companies
     and investment advisors.

**********END LEFT MARGIN CALLOUTS





Share Price and Distributions

Share Price

We determine the net asset value of the funds as of the close of regular trading
on the New York Stock  Exchange  (usually 4 p.m.  Eastern  time) on each day the
Exchange is open. On days when the Exchange is not open, we do not calculate the
net asset value. The net asset value of a fund share is the current value of its
investments,  minus  any  liabilities,  divided  by the  number  of fund  shares
outstanding.

If current prices of securities  owned by a fund are not readily  available from
an independent  pricing  service,  the advisor may determine their fair value in
accordance with procedures adopted by the fund's Board of Directors.  Trading of
securities  in foreign  markets may not take place on every day the  Exchange is
open.  Also,  trading in some  foreign  markets  may take place on  weekends  or
holidays  when a fund's net asset  value is not  calculated.  So, the value of a
fund's  portfolio  may be  affected  on days when you can't  purchase  or redeem
shares of the fund.

We will price your purchase,  exchange or redemption at the net asset value next
determined after we receive your transaction request in good order.

It is the responsibility of your plan recordkeeper or financial  intermediary to
transmit your purchase,  exchange and redemption  requests to the funds transfer
agent prior to the  applicable  cut-off  time for  receiving  orders and to make
payment for any purchase  transactions in accordance with the funds'  procedures
or any  contractual  arrangements  with the funds or the funds'  distributor  in
order for you to receive that day's price.

We have contractual relationships with certain financial intermediaries in which
such intermediaries  represent that they have systems to track the time at which
investment  orders are received and to  segregate  orders  received at different
times.  Based  on  these   representations,   the  funds  have  authorized  such
intermediaries  and their designees to accept purchase and redemption  orders on
the funds' behalf up to the applicable cut-off time. The funds will be deemed to
have received such orders upon acceptance by the duly  authorized  intermediary,
and such  orders  will be priced at the funds' net asset  value next  determined
after acceptance on the funds' behalf by such intermediary.

Distributions

Federal tax laws require each fund to make  distributions to its shareholders in
order  to  qualify  as a  "regulated  investment  company."  Qualification  as a
regulated  investment  company means that the funds will not be subject to state
or federal  income  tax on  amounts  distributed.  The  distributions  generally
consist of dividends and interest received, as well as capital gains realized on
the sale of investment  securities.  Each fund generally pays  distributions  of
capital  gains,  if any,  once a year in December.  They may make more  frequent
distributions if necessary to comply with Internal Revenue Code provisions.

Participants in employer-sponsored retirement or savings plans must reinvest all
distributions.  For shareholders  investing  through taxable  accounts,  we will
reinvest  distributions unless you elect to receive them in cash. Please consult
our Investor Services Guide for further information regarding  distributions and
your distribution options.

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The net asset value of a fund is the price of the fund's shares.

Capital gains is the increase in value of a capital asset,  such as stock,  from
the time it is  purchased.  Tax becomes  due on capital  gains once the asset is
sold.

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Taxes

The tax  consequences  of  owning  shares of the funds  will vary  depending  on
whether you own them through a taxable or tax-deferred account. Tax consequences
result from  distributions  by the funds of dividend and interest  income it has
received and capital gains it has generated  through its investment  activities,
and by sales of fund shares by investors after the net asset value has increased
or decreased.

Tax-Deferred Accounts

If you purchase fund shares through a tax-deferred  account, such as an IRA or a
qualified  employer-sponsored  retirement  or savings  plan,  income and capital
gains  distributions  usually will not be subject to current taxation,  but will
accumulate in your account  under the plan on a  tax-deferred  basis.  Likewise,
moving  from one fund to  another  fund  within a plan or  tax-deferred  account
generally  will  not  cause  you to be  taxed.  For  information  about  the tax
consequences of making  purchases or withdrawals  through an employer  sponsored
retirement  or  savings  plan,  or  through  an IRA,  please  consult  your plan
administrator, your summary plan description or a professional tax advisor.

Taxable Accounts

If you own fund shares through a taxable account,  distributions by the fund and
sales by you of fund shares may cause you to be taxed.

Taxability of Distributions

Fund distributions may consist of income earned by the fund from sources such as
dividends  and  interest,  or  capital  gains  generated  from  the sale of fund
investments.  Distributions of income are taxed as ordinary income. Distribution
of capital gains are classified  either as short term or long term and are taxed
as follows:

<TABLE>
Type of Distribution             Tax rate for 15% Bracket     Tax rate for 28% Bracket or above
- ------------------------------ ----------------------------- -------------------------------------
<S>                           <C>                                <C>
Short-term capital gains           Ordinary income rate              Ordinary income rate
Long-term capital gains                    10%                               20%
</TABLE>

The tax status of any  distribution  of capital  gains is determined by how long
the fund held the  underlying  security that was sold,  not by how long you have
been  invested  in the  fund or  whether  you  reinvest  your  distributions  in
additional  shares or take them as income.  American Century will detail the tax
status of fund  distributions  for each calendar year in an annual tax statement
from the fund.

Distributions  also may be subject to state and local taxes.  Because everyone's
tax situation is unique,  always  consult your tax  professional  about federal,
state and local tax consequences.

Taxes on Transactions

Your  redemptions -- including  exchanges to other American Century funds -- are
subject to capital  gains tax.  The table above can provide a general  guide for
your potential tax liability when selling or exchanging fund shares. "Short-term
capital  gains" are gains on fund shares held for 12 months or less.  "Long-term
capital  gains" are gains on fund shares  held for more than 12 months.  If your
shares  decrease in value,  their sale or exchange will result in a long-term or
short-term capital loss.

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*    Buying a Dividend

     Purchasing  fund shares in a taxable  account shortly before a distribution
     is sometimes  known as "buying a dividend." In taxable  accounts,  you must
     pay income taxes on the  distribution  whether you take the distribution in
     cash or  reinvest  it.  In  addition,  you  will  have to pay  taxes on the
     distribution whether the value of your investment  decreased,  increased or
     remained  the same after you bought the fund  shares.  The risk in buying a
     dividend is that a fund's  portfolio may build up taxable gains  throughout
     the period covered by a  distribution,  as securities are sold at a profit.
     We distribute those gains to you, after subtracting any losses, even if you
     did not own the shares when the gains occurred. Thus if you buy a dividend,
     you incur the full tax liability of the  distribution  period,  but you may
     not enjoy the full benefit of the gains realized in the fund's portfolio.

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Multiple Class Information

American   Century   offers  three  classes  of  the  funds:   Investor   Class,
Institutional Class and Advisor Class. The shares offered by this Prospectus are
Advisor  Class  shares and are offered  primarily  to  institutional  investors,
through  institutional   distribution   channels,   such  as  employer-sponsored
retirement plans, or through banks, broker-dealers and insurance companies.

American Century offers another class of shares that has no up-front or deferred
charges,  commissions  or 12b-1 fees.  The funds may offer a different  class of
shares primarily to institutional investors,  through institutional distribution
channels,  such  as  employer-sponsored  retirement  plans,  or  through  banks,
broker-dealers and insurance  companies.  The other classes have different fees,
expenses,  and/or minimum  investment  requirements  than the Advisor Class. The
difference  in the fee  structures  among  the  classes  is the  result of their
separate  arrangements  for  shareholder and  distribution  services and not the
result of any difference in amounts  charged by the advisor for core  investment
advisory  services.  Accordingly,  the core investment  advisory expenses do not
vary by  class.  Different  fees  and  expenses  will  affect  performance.  For
additional  information  concerning  the other  classes of shares not offered by
this Prospectus,  call us at 1-800-345-3533 or contact a sales representative or
financial intermediary who offers those classes of shares.

Except as  described  below,  all  classes  of  shares of a fund have  identical
voting,  dividend,   liquidation  and  other  rights,  preferences,   terms  and
conditions.  The only  differences  among the various classes are (a) each class
may be subject to different  expenses specific to that class, (b) each class has
a different identifying designation or name, (c) each class has exclusive voting
rights with respect to matters solely  affecting such class,  (d) each class may
have different exchange privileges,  and (e) the Institutional Class may provide
for automatic  conversion  from that class into shares of the Investor  Class of
the same fund.


Service and Distribution Fees
Investment Company Act Rule 12b-1 permits mutual funds that adopt a written plan
to pay out of fund assets certain  expenses  associated with the distribution of
their shares. The funds' Advisor Class shares have a 12b-1 Plan. Under the Plan,
the  fund  pays  an  annual  fee of  0.50%  of fund  assets,  half  for  certain
shareholder and administrative  services and half for distribution services. The
advisor,  as paying  agent for the funds,  pays all or a portion of such fees to
the  banks,  broker-dealers  and  insurance  companies  that  make  such  shares
available.  Because  these fees are paid out of the fund's assets on an on-going
basis,  over time these fees will increase the cost of your  investment  and may
cost  you  more  than  paying  other  types of  sales  charges.  For  additional
information about the Plan and its terms, see "Multiple Class Structure - Master
Distribution  and  Shareholder  Services  Plan" in the  Statement of  Additional
Information.







Financial Highlights
Understanding the Financial Highlights

This table  itemizes what  contributed  to the changes in share price during the
period,  and compares  this to changes over the last five fiscal years (or less,
if the share class is not five years old).

On a per-share basis, it includes:

o        share price at the beginning of the period
o        investment income and capital gains or losses
o        distributions of income and capital gains paid to shareholders
o        share price at the end of the period

It also includes some key statistics for the period:

o    Total Return--the  overall  percentage of return of the fund,  assuming the
     reinvestment of all distributions
o    Expense Ratio--operating expenses as a percentage of average net assets
o    Net Income  Ratio--net  investment  income as a  percentage  of average net
     assets
o    Portfolio  Turnover--the  percentage  of  the  fund's  buying  and  selling
     activity

The  Financial  Highlights  for the fiscal years ended October 31, 1997 and 1998
have been audited by Deloitte & Touche LLP, independent  auditors.  Their report
is in the funds' annual  report,  which is  incorporated  by reference  into the
Statement of Additional Information, and is available upon request. Prior years'
information was audited by other independent auditors, whose report thereon also
is incorporated by reference into the Statement of Additional Information.






Growth

                                                        1998          1997
PER-SHARE DATA
Net Asset Value, Beginning of Year
                                                    ------------- --------------
Income from Investment Operations
   Net Investment Income (dividends)
   Net Realized and Unrealized Gain (Loss) on
   Investment Transactions
                                                    ------------- --------------
   Total From Investment Operations
                                                    ------------- --------------
Less Distributions
   From Net Investment Income (dividends)
                                                    ------------- --------------
                                                    ------------- --------------
Net Asset Value, End of Year
                                                    ------------- --------------
Total Return(1)
RATIOS/SUPPLEMENTAL DATA
Ratio of Operating Expenses to Average Net Assets
Ratio of Net Investment Income to Average Net Assets
Net Assets, End of Year (in thousands)

(1) Total return assumes reinvestment of dividends and capital gains, if any.






<TABLE>
<CAPTION>
Ultra

                                                      1998          1997           1996
PER-SHARE DATA
<S>                                               <C>             <C>           <C>
Net Asset Value, Beginning of Year
                                                  ------------- -------------- -------------
Income from Investment Operations
   Net Investment Income (dividends)
                                                  ------------- -------------- -------------
Less Distributions
   From Net Investment Income (dividends)
                                                  ------------- -------------- -------------
Net Asset Value, End of Year
                                                  ------------- -------------- -------------
Total Return(1)
RATIOS/SUPPLEMENTAL DATA
Ratio of Operating Expenses to Average Net Assets
Ratio of Net Investment Income to Average Net Assets
Net Assets, End of Year (in thousands)
</TABLE>

(1) Total return assumes reinvestment of dividends and capital gains, if any.






Select

                                                        1998          1997
PER-SHARE DATA
Net Asset Value, Beginning of Year
                                                    ------------- --------------
Income from Investment Operations
   Net Investment Income (dividends)
   Net Realized and Unrealized Gain (Loss) on
   Investment Transactions
                                                    ------------- --------------
   Total From Investment Operations
                                                    ------------- --------------
Less Distributions
   From Net Investment Income (dividends)
                                                    ------------- --------------
                                                    ------------- --------------
Net Asset Value, End of Year
                                                    ------------- --------------
Total Return(1)
RATIOS/SUPPLEMENTAL DATA
Ratio of Operating Expenses to Average Net Assets
Ratio of Net Investment Income to Average Net Assets
Net Assets, End of Year (in thousands)

(1) Total return assumes reinvestment of dividends and capital gains, if any.






<TABLE>
<CAPTION>
Vista

                                                      1998          1997           1996
PER-SHARE DATA
<S>                                               <C>             <C>           <C>
Net Asset Value, Beginning of Year
                                                  ------------- -------------- -------------
Income from Investment Operations
   Net Investment Income (dividends)
                                                  ------------- -------------- -------------
Less Distributions
   From Net Investment Income (dividends)
                                                  ------------- -------------- -------------
Net Asset Value, End of Year
                                                  ------------- -------------- -------------
Total Return(1)
RATIOS/SUPPLEMENTAL DATA
Ratio of Operating Expenses to Average Net Assets
Ratio of Net Investment Income to Average Net Assets
Net Assets, End of Year (in thousands)
</TABLE>

(1) Total return assumes reinvestment of dividends and capital gains, if any.






Heritage

                                                        1998          1997
PER-SHARE DATA
Net Asset Value, Beginning of Year
                                                    ------------- --------------
Income from Investment Operations
   Net Investment Income (dividends)
   Net Realized and Unrealized Gain (Loss) on
   Investment Transactions
                                                    ------------- --------------
   Total From Investment Operations
                                                    ------------- --------------
Less Distributions
   From Net Investment Income (dividends)
                                                    ------------- --------------
                                                    ------------- --------------
Net Asset Value, End of Year
                                                    ------------- --------------
Total Return(1)
RATIOS/SUPPLEMENTAL DATA
Ratio of Operating Expenses to Average Net Assets
Ratio of Net Investment Income to Average Net Assets
Net Assets, End of Year (in thousands)

(1) Total return assumes reinvestment of dividends and capital gains, if any.









Performance Information of the Other Class
The  Advisor  Class of the  funds was  established  in 1996.  As a  result,  the
following  financial  information  is  provided to show the  performance  of the
funds' original class of shares.  This class,  the Investor  Class,  has a total
expense ratio that is 0.25% lower than the Advisor  Class.  If the Advisor Class
existed  during the periods  presented,  its  performance  would have been lower
because of the additional expense.

This table  itemizes what  contributed  to the changes in share price during the
period,  and compares  this to changes over the last five fiscal years (or less,
if the share class is not five years old).

On a per-share basis, it includes:

o        share price at the beginning of the period
o        investment income and capital gains or losses
o        distributions of income and capital gains paid to shareholders
o        share price at the end of the period

It also includes some key statistics for the period:

o    total return--the  overall  percentage of return of the fund,  assuming the
     reinvestment of all distributions

o    expense ratio--operating expenses as a percentage of average net assets

o    net income  ratio--net  investment  income as a  percentage  of average net
     assets

o    portfolio  turnover--the  percentage  of  the  fund's  buying  and  selling
     activity


The following  Financial  Highlights for the fiscal years ended October 31, 1997
and 1998 have been  audited by Deloitte & Touche,  independent  auditors.  Their
report is in the funds' annual report,  which is  incorporated by reference into
the Statement of Additional  Information,  and is available upon request.  Prior
years'  information  was audited by other  independent  auditors,  whose  report
thereon also is  incorporated  by  reference  into the  Statement of  Additional
Information.










<TABLE>
<CAPTION>
Growth

                                                           1998          1997           1996          1995          1994
PER-SHARE DATA
<S>                                                  <C>             <C>            <C>           <C>          <C>
Net Asset Value, Beginning of Year.........
                                                       ------------- -------------- ------------- ------------- --------------
Income from Investment Operations
   Net Investment Income (dividends).......
   Net Realized and Unrealized Gain (Loss) on
   Investment Transactions.................
                                                       ------------- -------------- ------------- ------------- --------------
   Total From Investment Operations........
                                                       ------------- -------------- ------------- ------------- --------------
Less Distributions
   From Net Investment Income (dividends)..
                                                       ------------- -------------- ------------- ------------- --------------
                                                       ------------- -------------- ------------- ------------- --------------
Net Asset Value, End of Year...............
                                                       ------------- -------------- ------------- ------------- --------------
Total Return(1)............................

RATIOS/SUPPLEMENTAL DATA

Ratio of Operating Expenses to 
   Average Net Assets ..................... 
Ratio of Net Investment Income to 
   Average Net Assets ..................... 
Net Assets, End of Year (in thousands).....

(1) Total return assumes reinvestment of dividends and capital gains, if any.
</TABLE>







<TABLE>
<CAPTION>
Ultra
                                                           1998          1997           1996          1995          1994
PER-SHARE DATA
<S>                                                  <C>             <C>            <C>           <C>          <C>
Net Asset Value, Beginning of Year.........
                                                       ------------- -------------- ------------- ------------- --------------
Income from Investment Operations
   Net Investment Income (dividends).......
   Net Realized and Unrealized Gain (Loss) on
   Investment Transactions.................
                                                       ------------- -------------- ------------- ------------- --------------
   Total From Investment Operations........
                                                       ------------- -------------- ------------- ------------- --------------
Less Distributions
   From Net Investment Income (dividends)..
                                                       ------------- -------------- ------------- ------------- --------------
                                                       ------------- -------------- ------------- ------------- --------------
Net Asset Value, End of Year...............
                                                       ------------- -------------- ------------- ------------- --------------
Total Return(1)............................

RATIOS/SUPPLEMENTAL DATA
Ratio of Operating Expenses to 
   Average Net Assets ..................... 
Ratio of Net Investment Income to 
   Average Net Assets ..................... 
Net Assets, End of Year (in thousands).....

(1) Total return assumes reinvestment of dividends and capital gains, if any.
</TABLE>




<TABLE>
<CAPTION>
Select

                                                           1998          1997           1996          1995          1994
PER-SHARE DATA
<S>                                                  <C>             <C>            <C>           <C>          <C>
Net Asset Value, Beginning of Year.........
                                                       ------------- -------------- ------------- ------------- --------------
Income from Investment Operations
   Net Investment Income (dividends).......
   Net Realized and Unrealized Gain (Loss) on
   Investment Transactions.................
                                                       ------------- -------------- ------------- ------------- --------------
   Total From Investment Operations........
                                                       ------------- -------------- ------------- ------------- --------------
Less Distributions
   From Net Investment Income (dividends)..
                                                       ------------- -------------- ------------- ------------- --------------
                                                       ------------- -------------- ------------- ------------- --------------
Net Asset Value, End of Year...............
                                                       ------------- -------------- ------------- ------------- --------------
Total Return(1)............................

RATIOS/SUPPLEMENTAL DATA
Ratio of Operating Expenses to 
   Average Net Assets ..................... 
Ratio of Net Investment Income to 
   Average Net Assets ..................... 
Net Assets, End of Year (in thousands).....

(1) Total return assumes reinvestment of dividends and capital gains, if any.
</TABLE>




<TABLE>
<CAPTION>
Vista

                                                           1998          1997           1996          1995          1994
PER-SHARE DATA
<S>                                                  <C>             <C>            <C>           <C>          <C>
Net Asset Value, Beginning of Year.........
                                                       ------------- -------------- ------------- ------------- --------------
Income from Investment Operations
   Net Investment Income (dividends).......
   Net Realized and Unrealized Gain (Loss) on
   Investment Transactions.................
                                                       ------------- -------------- ------------- ------------- --------------
   Total From Investment Operations........
                                                       ------------- -------------- ------------- ------------- --------------
Less Distributions
   From Net Investment Income (dividends)..
                                                       ------------- -------------- ------------- ------------- --------------
                                                       ------------- -------------- ------------- ------------- --------------
Net Asset Value, End of Year...............
                                                       ------------- -------------- ------------- ------------- --------------
Total Return(1)............................

RATIOS/SUPPLEMENTAL DATA
Ratio of Operating Expenses to 
   Average Net Assets ..................... 
Ratio of Net Investment Income to 
   Average Net Assets ..................... 
Net Assets, End of Year (in thousands).....

(1) Total return assumes reinvestment of dividends and capital gains, if any.
</TABLE>




<TABLE>
<CAPTION>
Heritage

                                                           1998          1997           1996          1995          1994
PER-SHARE DATA
<S>                                                  <C>             <C>            <C>           <C>          <C>
Net Asset Value, Beginning of Year.........
                                                       ------------- -------------- ------------- ------------- --------------
Income from Investment Operations
   Net Investment Income (dividends).......
   Net Realized and Unrealized Gain (Loss) on
   Investment Transactions.................
                                                       ------------- -------------- ------------- ------------- --------------
   Total From Investment Operations........
                                                       ------------- -------------- ------------- ------------- --------------
Less Distributions
   From Net Investment Income (dividends)..
                                                       ------------- -------------- ------------- ------------- --------------
                                                       ------------- -------------- ------------- ------------- --------------
Net Asset Value, End of Year...............
                                                       ------------- -------------- ------------- ------------- --------------
Total Return(1)............................

RATIOS/SUPPLEMENTAL DATA
Ratio of Operating Expenses to 
   Average Net Assets ..................... 
Ratio of Net Investment Income to 
   Average Net Assets ..................... 
Net Assets, End of Year (in thousands).....

(1) Total return assumes reinvestment of dividends and capital gains, if any.
</TABLE>






More information about the funds is contained in these documents:

Annual and Semiannual Reports.  These reports contain more information about the
fund's  investments  and the market  conditions and investment  strategies  that
significantly  affected the fund's  performance during the most recent six-month
fiscal period.

Statement of Additional  Information.  The SAI contains a more  detailed,  legal
description  of the funds'  operations,  investment  restrictions,  policies and
practices. The SAI is incorporated by reference into this Prospectus. This means
that it is legally part of this Prospectus, even if you don't request a copy.

You also can get information about the funds (including the SAI) from the SEC.

v        In person.        SEC Public Reference Room
                           Washington, D.C.
                           Call 1-800-SEC-0330 for location and hours.
v        On the internet.  www.sec.gov.
v        By mail.          Public Reference Section
                           Washington, D.C.
                           20549-6009
                           The SEC will charge a fee for  copying the  documents
                           you request.


American Century Investments
P.O. Box 419385
Kansas City, Missouri 64141-6385

Institutional Services
1-800-345-3533 or 816-531-5575

Automated Information Line
1-800-345-8765

Fax
816-340-4655

www.americancentury.com

Telecommunications Device for the Deaf
1-800-345-1833 or 816-444-3038

Corporate, Not-for-Profit, Keogh,
SEP-, SARSEP-, SIMPLE-IRA and 403(b) Services
1-800-345-3533

Investment Company Act File No. 811-0816
<PAGE>
[american century logo(reg.sm)]
American
Century

Prospectus


- --------------------------------------------------------------------------------
January 29, 1999

AMERICAN CENTURY

Limited-Term Bond
Intermediate-Term Bond
Bond

Advisor Class

The  Securities and Exchange  Commission  has not approved or disapproved  these
securities or determined if this Prospectus is accurate or complete.  Anyone who
tells you otherwise is committing a crime.

Distributed by Funds Distributor, Inc.





Reading a prospectus doesn't have to be a chore. We've done the hard work so you
can focus on what's  important--learning about the funds. Take a look inside and
you'll see this  prospectus  is  different  from  others.  It takes a  clear-cut
approach to fund information.

Here's what you'll find:

o    The funds' primary investments and risks

o    A description of who may or may not want to invest in the funds

o    Fund performance,  including returns for each year, best and worst quarters
     and average annual returns compared to the funds' benchmarks

o    An overview of ways to best manage your accounts

o    Helpful tips and definitions of key investment terms

Whether  you're a current  investor or  investing  in mutual funds for the first
time, this prospectus will give you a clear  understanding  of the funds. If you
have questions,  our Investor Services Representatives are available weekdays, 7
a.m. to 7 p.m.  Central time. Our toll-free  number is  1-800-345-2021.  We look
forward to helping you achieve your financial goals.

                                      Sincerely,


                                      Mark Killen
                                      Senior Vice President
                                      American Century Investment Services, Inc.












Table of Contents

An Overview of the Funds.............................................2

Fees and Expenses....................................................3

Detailed Information about the Funds.................................4

         Limited-Term Bond
         Intermediate-Term Bond
         Bond

Basics of Fixed Income Investing....................................12

Management..........................................................15

Investing with American Century.....................................18

Share Price and Distributions.......................................21

Taxes...............................................................22

Multiple Class Information..........................................22

Financial Highlights................................................23

Performance Information of the Other Class..........................22

Fund Reference
                             Fund Code       Ticker
- ---------------------------------------------------------
Limited-Term Bond            033             ABLAX
Intermediate-Term Bond       034             TWTAX
Bond                         027             ABBAX
- ---------------------------------------------------------

**********LEFT MARGIN CALLOUTS

Throughout  this  book  you'll  find  definitions  to key  investment  terms and
phrases.  When you see a word printed in green italics,  look for its definition
in the left margin.

*.......This symbol highlights special information and helpful tips.

**********END LEFT MARGIN CALLOUTS








An Overview of the Funds

What are the funds' investment goals?

These funds seek  income  from  investments  in  corporate  bonds and other debt
obligations.

What are the funds' primary investments and risks?

The funds  invest  most of their  assets in quality  debt  securities  issued by
corporations.  The chart below shows the  primary  differences  among the funds.
Additional  important  information  about the funds'  investment  strategies and
risks begins on page 4.

<TABLE>
Fund                         Primary Investments                         Primary Risks
- ---------------------------- ------------------------------------------- -------------------------
<S>                           <C>                                        <C>
Limited-Term Bond            Quality short-term debt securities          Liquidity risk
                                                                         Some credit risk
                                                                         Some interest rate risk
Intermediate-Term Bond       Quality intermediate-term debt securities   Liquidity risk
                                                                         Some credit risk
                                                                         Interest rate risk
Bond                         Quality intermediate- and longer-term       Liquidity risk
                             debt securities                             Some credit risk
                                                                         High interest rate risk
- ---------------------------- ------------------------------------------- -------------------------
</TABLE>

**********LEFT MARGIN CALLOUT

Debt  securities  means bonds,  notes and  debentures.  Debt securities also are
sometimes called fixed income securities.

**********END LEFT MARGIN CALLOUT

Who may want to invest in the funds?

The funds may be a good investment if you are

0    seeking current income

0    comfortable with the funds' other investment risks

Who may not want to invest in the funds?

The funds may not be a good investment if you are

0    investing for long-term growth

0    looking for the added security of FDIC insurance

**********LEFT MARGIN CALLOUTS

An  investment  in the  funds  is  not a bank  deposit  and  is not  insured  or
guaranteed by the Federal Deposit Insurance  Corporation or any other government
agency.


**********END LEFT MARGIN CALLOUTS








Fees and Expenses

There are no sales loads or fees or other charges

0    to buy fund shares directly from American Century

0    to reinvest dividends in additional shares

0    to exchange into the Advisor Class shares of other American Century funds

The following  tables describe the fees and expenses that you may pay if you buy
and hold shares of the funds.

<TABLE>
Annual Operating Expenses (expenses that are deducted from fund assets)

                       Management Fee  Distribution and        Other      Total Annual
                                       Service (12b-1) Fees1   Expenses2  Fund Operating
                                                                          Expenses
- ---------------------- --------------- ----------------------- ---------- ------------------
<S>                    <C>             <C>                     <C>        <C>  
Limited-Term Bond      0.45%           0.50%                   0.00%      0.95%
- ---------------------- --------------- ----------------------- ---------- ------------------
Intermediate-Term Bond 0.50%           0.50%                   0.00%      1.00%
- ---------------------- --------------- ----------------------- ---------- ------------------
Bond                   0.55%           0.50%                   0.00%      1.05%
</TABLE>

1    The 12b-1 fee is designed to permit  investors  to purchase  Advisor  Class
     shares  through  broker-dealers,   banks,  insurance  companies  and  other
     financial  intermediaries.  A portion of the fee is used to compensate them
     for ongoing recordkeeping and administrative  services that would otherwise
     be  performed  by an  affiliate  of the  manager,  and a portion is used to
     compensate  them for  distribution  and  other  shareholder  services.  See
     "Service and Distribution Fees," page xx.

2    Other  expenses,  which  include  the  fees  and  expenses  of  the  funds'
     independent  trustees,  their legal  counsel,  interest  and  extraordinary
     expenses, were less than 0.005% for the most recent fiscal year.

Examples of Hypothetical Fund Costs

The  examples in the table  below are  intended to help you compare the costs of
investing in a fund with those of other mutual funds. Assuming you ...

o        invest $10,000 in the fund

o        redeem all of your shares at the end of the periods shown below

o        earn a 5% return each year and

o        incur the same operating expenses shown above,

 ... your cost of investing in the fund would be:

                             1 Year     3 Years    5 Years    10 Years
- ---------------------------- ---------- ---------- ---------- -----------
Limited-Term Bond            $10        $30        $53        $117
- ---------------------------- ---------- ---------- ---------- -----------
Intermediate-Term Bond       $10        $32        $55        $122
- ---------------------------- ---------- ---------- ---------- -----------
Bond                         $11        $33        $58        $128

**********LEFT MARGIN CALLOUTS

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

**********END LEFT MARGIN CALLOUTS






Detailed Information About the Funds

Limited-Term Bond
Intermediate-Term Bond
Bond

What are the funds' investment objectives?

These funds seek  income  from  investments  in  corporate  bonds and other debt
obligations.

How do the funds implement their investment objectives?

The funds invest most of their assets in quality  debt  securities  of differing
maturities.  However,  up to  15% of  the  funds'  assets  may  be  invested  in
securities rated in the fifth highest category by an independent  rating agency,
or determined to be of comparable quality by the advisor.  Corporations  usually
issue  these  securities  to  finance  existing  operations  or to expand  their
business. The remainder will be invested in short-term money market instruments.
For more information  about the funds' credit quality standards and about credit
risk, please see "Basics of Fixed Income Investing" beginning on page XX.

**********LEFT MARGIN CALLOUTS

A quality debt security is one that has been determined to be investment  grade.
This can be  established in a number of ways.  For example,  independent  rating
agencies  may rate the security in one of their four higher  rating  categories.
The funds'  advisor  also can analyze an unrated  security to  determine  if its
credit quality is high enough for investment.

**********END LEFT MARGIN CALLOUTS

What is the difference between the three funds?

The funds  differ in the maturity of the debt  securities  they  purchase.  This
difference is shown on the chart below.

                             Expected Weighted Average Maturity Range
- -----------------------------------------------------------------------
Limited-Term Bond            1-5 years
Intermediate-Term Bond       3-10 years
Bond                         8-20 years

What are the primary risks of investing in the funds?

The funds have different weighted average maturities. Because of this, the funds
will  respond  differently  to  changes in  interest  rates.  Funds with  longer
weighted  average  maturities are more sensitive to interest rate changes.  When
interest  rates rise,  the values of the funds usually  fall,  but the values of
funds with longer weighted average maturities generally will fall farther.

The funds' share values will fluctuate.  In general,  the funds that have higher
potential  income  have a higher  potential  loss.  If you sell your shares when
their value is less than the price you paid, you will lose money.

                             Potential Income       Potential Loss
- --------------------------------------------------------------------------
Limited-Term Bond            Lower                  Lower
Intermediate-Term Bond       Moderate               Moderate
Bond                         Higher                 Higher

Although  most  of the  securities  purchased  by the  funds  are  quality  debt
securities at the time of purchase, the funds may invest part of their assets in
securities rated in the lowest  investment grade category (e.g.,  BBB) and up to
15% of their assets in securities  rated in the fifth category (e.g.,  BB). As a
result, the funds have some credit risk. Although they are considered investment
grade,  issuers of BBB rated  securities (and securities of similar quality) are
more likely to have problems making interest and principal payments than issuers
of higher-rated  securities.  Issuers of BB rated  securities (and securities of
similar  quality)  are  considered  to face major  uncertainties  or exposure to
adverse  business,   financial  or  economic   conditions  that  could  lead  to
difficulties in making timely payments of principal and interest.







Fund Performance History

The performance  information on this page is designed to help you understand how
fund returns can vary. Keep in mind that past  performance  does not predict how
the funds will perform in the future.

Annual Total Returns

The following bar chart shows the performance of the funds' Advisor Class shares
for each full year in the life of the class if less than 10 years.  It indicates
the volatility of the historical returns from year to year.

[GRAPH  DEPICTING  10  YEAR  ANNUAL  TOTAL  RETURNS  (OR  SINCE  INCEPTION)  FOR
LIMITED-TERM  BOND,   INTERMEDIATE-TERM  BOND  AND  BOND;  UPDATED  FIGURES  NOT
AVAILABLE]

Highest and Lowest Quarterly Returns
The highest and lowest  returns of the funds' Advisor Class shares for a quarter
during  the  life of the  class  if less  than 10 years  are  provided  below to
indicate the funds' historical short-term volatility.

[GRAPH  DEPICTING  HIGHEST AND LOWEST QUARTERLY  RETURNS FOR LIMITED-TERM  BOND,
INTERMEDIATE-TERM BOND AND BOND SINCE INCEPTION; UPDATED FIGURES NOT AVAILABLE]

Average Annual Returns

The following table shows the average annual returns of the funds' Advisor Class
shares for the periods  indicated  during the life of the class.  The benchmarks
are included for long-term performance comparison.  The benchmarks are unmanaged
indices that have no operating costs.

<TABLE>
                                                        1 year         5 years        10 years       Life of Fund*
- --------------------------------------------------------------------------------------------------------------------
<S>                                                     <C>            <C>            <C>            <C>  
Limited-Term Bond                                       3.17%          N/A            N/A            3.33%
Merrill Lynch 1- to 5-year Govt./Corp. Index            X.XX%          X.XX%          X.XX%          X.XX%
- --------------------------------------------------------------------------------------------------------------------
Intermediate-Term Bond                                  3.17%          N/A            N/A            3.33%
Lehman Intermediate Govt./Corp. Index                   X.XX%          X.XX%          X.XX%          X.XX%
- --------------------------------------------------------------------------------------------------------------------
Bond                                                    3.17%          3.12%          3.31%          3.33%
Lehman Aggregate Bond Index                             X.XX%          X.XX%          X.XX%          X.XX%
</TABLE>

*  The  inception  dates for the  Advisor  Class of the funds are:  Limited-Term
   Bond, November 12, 1997;  Intermediate-Term  Bond, August 14, 1997; and Bond,
   August 8, 1997.

**********LEFT MARGIN CALLOUTS

The funds' total  returns for the period from January 1, 1998,  to September 30,
1998, are

Limited-Term Bond              X.XX%
Intermediate-Term Bond         X.XX%
Bond                           X.XX%

*    For current performance  information,  including yields,  please call us at
     1-800-345-2021    or    visit    American    Century's    Web    site    at
     www.americancentury.com

**********END LEFT MARGIN CALLOUTS
Performance Information of Other Class
The original class of shares of the fund was the Investor  Class of shares.  The
Advisor  Class  was not  established  until  1996.  For  information  about  the
historical performance of the original class of shares, see page xx.





Basics of Fixed Income Investing

Debt Securities

When a fund buys a debt security,  which is also called a fixed income security,
it is  essentially  lending money to the issuer of the security.  Notes,  bonds,
commercial paper and Treasury bills are examples of debt  securities.  After the
issuer  first  sells  the  debt  security,  it may be  bought  and sold by other
investors.  The price of the  security  may rise or fall based on many  factors,
including changes in interest rates, inflation and liquidity.

The fund managers decide which debt securities to buy and sell by

0    determining which securities help a fund meet its maturity requirements

0    identifying securities that satisfy a fund's credit quality requirements

0    evaluating  the  current  economic  conditions  and  assessing  the risk of
     inflation

0    evaluating  special  features of the securities  that may make them more or
     less attractive

Weighted Average Maturity

Like most loans,  debt  securities  eventually must be repaid (or refinanced) at
some date.  This date is called the maturity  date. The number of days left to a
debt  security's  maturity date is called the remaining  maturity.  The longer a
debt  security's  remaining  maturity,  the more  sensitive  it is to changes in
interest rates.

Because a bond fund will own many debt  securities,  the advisor  calculates the
average of the remaining  maturities of all of the debt securities the fund owns
to evaluate the interest rate sensitivity of the entire portfolio.  This average
is  weighted  according  to the size of the fund's  individual  holdings  and is
called weighted average maturity. The following chart shows how an advisor would
calculate  the  weighted  average  maturity  for a fund that owned only two debt
securities.

<TABLE>
                       Amount of Security Owned       Percent of Portfolio   Remaining Maturity      Weighted Maturity
- ---------------------- ------------------------------ ---------------------- ----------------------- ----------------------
<S>                    <C>                            <C>                    <C>                     <C>     
Debt Security A        $100,000                       25%                    1,000 days              250 days
Debt Security B        $300,000                       75%                    10,000 days             7500 days
Weighted Average Maturity                                                                            7750 days
</TABLE>

Types of Risk

The basic types of risk that the funds face are described below.

Interest Rate Risk

Generally,  interest  rates and the prices of debt  securities  move in opposite
directions.  So when  interest  rates fall,  the prices of most debt  securities
rise; when interest rates rise, prices fall.  Because the funds invest primarily
in  debt   securities,   changes  in  interest  rates  will  affect  the  funds'
performance.

The degree to which interest rate changes affect the funds'  performance  varies
and is related to the weighted average  maturity of the fund. For example,  when
interest  rates rise, you can expect the share value of a long-term bond fund to
fall more than that of a short-term  bond fund. When rates fall, the opposite is
true. This sensitivity to interest rate changes is called interest rate risk.

***********LEFT MARGIN CALLOUTS

*    Weighted  average  maturity is a tool that the advisor uses to  approximate
     the remaining maturity of a fund's investment portfolio.

*    The longer a fund's weighted average maturity,  the more sensitive it is to
     changes in interest rates.

***********END LEFT MARGIN CALLOUTS






The following  table shows the effect of a 1% increase in interest  rates on the
price of 7% coupon bonds of differing maturities:

<TABLE>
Remaining Maturity             Current Price    Price after 1% increase       Change in price
- -------------------------- ------------------ -------------------------- ---------------------
<S>                                  <C>                         <C>                    <C>  
1 year                               $100.00                     $99.06                -0.94%
3 years                               100.00                      97.38                -2.62%
10 years                              100.00                      93.20                -6.80%
30 years                              100.00                      88.69               -11.31%
</TABLE>

Credit Risk

Credit risk is the risk that an obligation won't be paid and a loss will result.
A high  credit  rating  indicates  a high  degree of  confidence  by the  rating
organization  that  the  issuer  will  be able to  withstand  adverse  business,
financial or economic  conditions  and be able to make  interest  and  principal
payments on time.  Currently,  a lower credit rating indicates a greater risk of
nonpayment.  A lower rating may also  indicate that the issuer has a more senior
series of debt  securities,  which  means that if the  issuer  has  difficulties
making  its  payments,  the  more  senior  series  of debt is  first in line for
payment.

It's not as simple as buying the highest rated debt securities,  though.  Higher
credit ratings  usually mean lower interest  rates,  so investors often purchase
securities that aren't the highest-rated to increase return. If a fund purchases
lower-rated securities, it assumes additional credit risk.

The following  chart shows the  authorized  credit  quality ranges for the funds
offered by this Prospectus.

- -------------------------------- -----------------------------------------------
      INVESTMENT GRADE                       NON-INVESTMENT GRADE
- -------------------------------- -----------------------------------------------
            A-1             A-2      A-3
            P-1             P-2      P-3
          MIG-1           MIG-2    MIG-3
           SP-1            SP-2     SP-3
  AAA        AA       A     BBB      BB       B      CCC      CC       C      D
- ------ --------- ------- ------- ------- ------- -------- ------- ------- ------
Limited-Term Bond
- ----------------------------------------
Intermediate-Term Bond
- ----------------------------------------
Bond
- ---------------------------------------- ------- -------- ------- ------- ------

Securities  rated  in  one  of  the  highest  four  categories  by a  nationally
recognized  securities rating organization (e.g.,  Moody's or Standard & Poor's)
are  considered  "investment  grade."  Although they are  considered  investment
grade, an investment in these securities still involves some credit risk since a
AAA rating is not a guarantee  of  payment.  For a complete  description  of the
ratings  system,  see  "Explanation of Fixed Income  Securities  Ratings" in the
Statement of Additional Information.

Liquidity Risk

Debt securities can become  difficult to sell for a variety of reasons,  such as
lack of an active trading market.  When a fund's investments become difficult to
sell, it is said to have a problem with  liquidity.  The chance that a fund will
have liquidity issues is called liquidity risk.

Inflation Risk

The safest investments usually have the lowest potential income and performance.
There  is  a  risk,   then,  that  returns  from  the  investment  may  fail  to
significantly  outpace  inflation.  Even if the value of your investment has not
gone  down,  your  money  will  not be  worth  as much as if  there  had been no
inflation.  Your after-inflation  return may be quite small. This risk is called
inflation risk.

**********LEFT MARGIN CALLOUTS

*    Credit quality may be lower when the issuer has

o        a high debt level
o        a short operating history
o        a senior level of debt
o        a difficult competitive environment

*    The Statement of Additional  Information provides a detailed description of
     these securities ratings.

**********END LEFT MARGIN CALLOUTS






A Comparison of Basic Risk Factors

The  following  chart  depicts the basic risks of investing in the funds.  It is
designed to help you compare  these funds with each other;  it shouldn't be used
to compare these funds with other mutual funds.

<TABLE>
                              Interest Rate Risk   Credit Risk   Liquidity Risk   Inflation Risk
- ----------------------------- -------------------- ------------- ---------------- ---------------
<S>                           <C>                  <C>           <C>              <C>
Limited-Term Bond             Low                  Similar       Similar          High
Intermediate-Term Bond        Medium               Similar       Similar          Medium
Bond                          High                 Similar       Similar          Low
</TABLE>

The funds  engage in a variety of  investment  techniques  as they pursue  their
investment objectives. Each technique has its own characteristics,  and may pose
some  level of risk to the funds.  If you would  like to learn more about  these
techniques,  you should review the Statement of  Additional  Information  before
making an investment.








Management

Who manages the funds?

The Board of Directors,  investment  advisor and fund  management  team play key
roles in the management of the funds.

The Board of Directors

The Board of Directors  oversees the  management of the funds and meets at least
quarterly  to  review  reports  about  fund  operations.  Although  the Board of
Directors  does not manage the funds,  it has hired an investment  advisor to do
so. More than half of the directors are independent of the funds' advisor,  that
is, they are not employed by and have no financial interest in the advisor.

The Investment Advisor

The funds' investment  advisor is American Century Investment  Management,  Inc.
The advisor has been  managing  mutual  funds  since 1958.  American  Century is
headquartered at 4500 Main Street, Kansas City, Missouri 64111.

The advisor is responsible  for managing the investment  portfolios of the funds
and directing the purchase and sale of their investment securities.  The advisor
also arranges for transfer agency,  custody and all other services necessary for
the funds to operate.

For the services it provided to the funds during their most recent  fiscal year,
the  advisor  received a unified  management  fee based on a  percentage  of the
average net assets of the Advisor Class of shares of the fund. The amount of the
management fee for a fund is calculated on a class-by-class basis daily and paid
monthly.  Out of that  fee,  the  advisor  paid all  expenses  of  managing  and
operating the fund except brokerage expenses, taxes, interest, fees and expenses
of the independent  directors  (including legal counsel fees) and  extraordinary
expenses.

Fees Paid by the Funds to the Advisor for the Most Recent Fiscal
Year Ended October 31, 1998
- --------------------------------------------------------------------
Limited-Term Bond                                           0.95%
Intermediate-Term Bond                                      1.00%
Bond                                                        1.05%






The Fund Management Team

The advisor uses teams of portfolio  managers,  assistant portfolio managers and
analysts to manage the funds.  Teams meet regularly to review portfolio holdings
and to discuss purchase and sale activity.  Team members buy and sell securities
for a fund as they  see fit,  guided  by the  fund's  investment  objective  and
strategy.

Portfolio Manager members of the investment team are identified below:

Norman E. Hoops
Mr. Hoops, Senior Vice President and Portfolio Manager, has been a member of the
team that manages the funds since the fund's  inception in March 1994. He joined
American  Century as Vice  President and Portfolio  Manager in November 1989. In
April  1993,  he became  Senior Vice  President.  He has a bachelor of arts from
Indiana University and an MBA from Butler University.

Jeffrey L. Houston
Mr. Houston,  Portfolio Manager,  has been a member of the team that manages the
funds since June 1995. He joined  American  Century as an Investment  Analyst in
1990 and was  promoted to Portfolio  Manager in 1994.  He has a bachelor of arts
from the  University  of Delaware and an MPA from Syracuse  University.  He is a
Chartered Financial Analyst.




**********LEFT MARGIN CALLOUTS

*    Code of Ethics

     American Century has a Code of Ethics designed to ensure that the interests
     of fund shareholders come before the interests of the people who manage the
     funds.  Among  other  provisions,  the Code of Ethics  prohibits  portfolio
     managers  and other  investment  personnel  from  buying  securities  in an
     initial public offering or from profiting from the purchase and sale of the
     same  security  within 60 calendar  days.  In addition,  the Code of Ethics
     requires  portfolio managers and other employees with access to information
     about the purchase or sale of  securities  by the funds to obtain  approval
     before executing permitted personal trades.

**********END LEFT MARGIN CALLOUTS






Fundamental Investment Policies

Fundamental  investment  policies  contained  in  the  Statement  of  Additional
Information  and the  investment  objectives  of the  funds  may not be  changed
without a shareholder  vote. The Board of Trustees may change any other policies
and investment strategies.

Year 2000 Issues

Many of the world's  computer  systems  currently  cannot properly  recognize or
process date-sensitive information relating to the Year 2000 and beyond. Because
this may impact the computer systems of various American  Century-affiliated and
external service providers for the funds,  American Century formally initiated a
Year 2000  readiness  project in July 1997.  It  involves a team of  information
technology  professionals  assisted  by  outside  consultants  and  guided  by a
senior-level steering committee.  The team's goal is to assess the impact of the
Year 2000 on  American  Century's  systems,  renovate  or  replace  noncompliant
critical systems and test those systems. In addition,  the team has been working
to gather  information  about the Year 2000  efforts of the funds'  other  major
service providers.  Although American Century believes its critical systems will
function  properly in the Year 2000, this is not  guaranteed.  If the efforts of
American  Century or its external  service  providers  are not  successful,  the
funds'  business,  particularly  the provision of shareholder  services,  may be
hampered.

In  addition,  the  issuers  of  securities  the funds own could  have Year 2000
computer  problems.  These problems could  negatively  affect the value of their
securities, which, in turn, could impact the funds' performance. The advisor has
established a process to gather publicly  available  information  about the Year
2000  readiness  of these  issuers.  However,  this  process may not uncover all
relevant  information,  and the  information  gathered  may not be complete  and
accurate.  Moreover, an issuer's Year 2000 readiness is only one of many factors
the fund  managers  may consider  when making  investment  decisions,  and other
factors may receive greater weight.






Investing with American Century
Eligibility for Advisor Class Shares
The  Advisor  Class  shares  are  intended  for  purchase  by   participants  in
employer-sponsored retirement or savings plans and for persons purchasing shares
through   broker-dealers,   banks,   insurance  companies  and  other  financial
intermediaries that provide various administrative and distribution services.

Investing Through Financial Intermediaries

If you do business  with us through a  financial  intermediary  or a  retirement
plan,  your ability to purchase,  exchange and redeem  shares will depend on the
policies of that entity. Some policy differences may include

o        minimum investment requirements
o        exchange policies
o        fund choices
o        cut-off time for investments

Please  contact  your  financial  intermediary  or plan  sponsor  for a complete
description  of its policies.  Copies of the funds' annual  reports,  semiannual
reports  and  Statements  of  Additional  Information  are  available  from your
intermediary or plan sponsor.

Certain  financial   intermediaries  perform  recordkeeping  and  administrative
services  for their  clients  that would  otherwise  be  performed  by  American
Century's transfer agent. In some  circumstances,  American Century will pay the
service provider a fee for performing those services.

Although  transactions in fund shares may be made directly with American Century
at no charge,  you also may purchase,  redeem and exchange  fund shares  through
financial  intermediaries that charge a transaction-based or other fee for their
services. Those charges are retained by the intermediary and are not shared with
American Century or the funds.

American Century has contracts with certain  financial  intermediaries  in which
they represent that they will track the time investment orders are received. The
funds have  authorized  those  intermediaries  to accept  orders on each  fund's
behalf up to the time net asset value is determined.  Such orders will be priced
at the net asset value next determined after acceptance of the order on a fund's
behalf.


**********LEFT MARGIN CALLOUTS

*    Financial intermediaries include banks, broker-dealers, insurance companies
     and investment advisors.

**********END LEFT MARGIN CALLOUTS






Share Price and Distributions

Share Price

We determine the net asset value of the funds as of the close of regular trading
on the New York Stock  Exchange  (usually 4 p.m.  Eastern  time) on each day the
Exchange is open. On days when the Exchange is not open, we do not calculate the
net asset value. The net asset value of a fund share is the current value of its
investments,  minus  any  liabilities,  divided  by the  number  of fund  shares
outstanding.

If current prices of securities  owned by a fund are not readily  available from
an independent  pricing  service,  the advisor may determine their fair value in
accordance with procedures  adopted by the fund's Board of Trustees.  Trading of
securities  in foreign  markets may not take place on every day the  Exchange is
open.  Also,  trading in some  foreign  markets  may take place on  weekends  or
holidays  when a fund's net asset  value is not  calculated.  So, the value of a
fund's  portfolio  may be  affected  on days when you can't  purchase  or redeem
shares of the fund.

We will price your purchase,  exchange or redemption at the net asset value next
determined after we receive your transaction request in good order.

It is the responsibility of your plan recordkeeper or financial  intermediary to
transmit your purchase,  exchange and redemption requests to the funds' transfer
agent prior to the  applicable  cut-off  time for  receiving  orders and to make
payment for any purchase  transactions in accordance with the funds'  procedures
or any  contractual  arrangements  with the funds or the funds'  distributor  in
order for you to receive that day's price.

We have contractual relationships with certain financial intermediaries in which
such intermediaries  represent that they have systems to track the time at which
investment  orders are received and to  segregate  orders  received at different
times.  Based  on  these   representations,   the  funds  have  authorized  such
intermediaries  and their designees to accept purchase and redemption  orders on
the funds' behalf up to the applicable cut-off time. The funds will be deemed to
have received such orders upon acceptance by the duly  authorized  intermediary,
and such  orders  will be priced at the funds' net asset  value next  determined
after acceptance on the funds' behalf by such intermediary.


Distributions

Federal tax laws require each fund to make  distributions to its shareholders in
order  to  qualify  as a  "regulated  investment  company."  Qualification  as a
regulated  investment  company means that the funds will not be subject to state
or federal  income  tax on  amounts  distributed.  The  distributions  generally
consist of dividends and interest received, as well as capital gains realized on
the sale of investment securities.  Each fund pays distributions from net income
monthly. Each fund generally pays distributions of capital gains, if any, once a
year in December.  A fund may make more frequent  distributions  if necessary to
comply with Internal Revenue Code provisions.

You will begin to participate in fund  distributions the day after your purchase
is effective.  If you redeem shares, you will receive the distribution  declared
for  the day  you  redeem.  If you  redeem  all  shares,  we  will  include  the
distribution on the redeemed with your redemption proceeds.

Participants in employer-sponsored retirement or savings plans must reinvest all
distributions.  For shareholders  investing  through taxable  accounts,  we will
reinvest  distributions unless you elect to receive them in cash. Please consult
our Investor Services Guide for further information regarding  distributions and
your distribution options.

**********LEFT MARGIN CALLOUTS

The net asset value of a fund is the price of the fund's shares.

Capital gains is the increase in value of a capital asset,  such as stock,  from
the time it is  purchased.  Tax becomes  due on capital  gains once the asset is
sold.

**********END LEFT MARGIN CALLOUTS






Taxes

The tax  consequences  of  owning  shares of the funds  will vary  depending  on
whether you own them through a taxable or tax-deferred account. Tax consequences
result from  distributions  by the funds of dividend and interest  income it has
received and capital gains it has generated  through its investment  activities,
and by sales of fund shares by investors after the net asset value has increased
or decreased.

Tax-Deferred Accounts

If you purchase fund shares through a tax-deferred  account, such as an IRA or a
qualified  employer-sponsored  retirement  or savings  plan,  income and capital
gains  distributions  usually will not be subject to current taxation,  but will
accumulate in your account  under the plan on a  tax-deferred  basis.  Likewise,
moving  from one fund to  another  fund  within a plan or  tax-deferred  account
generally  will  not  cause  you to be  taxed.  For  information  about  the tax
consequences of making  purchases or withdrawals  through an employer  sponsored
retirement  or  savings  plan,  or  through  an IRA,  please  consult  your plan
administrator, your summary plan description or a professional tax advisor.

Taxable Accounts

If you own fund shares through a taxable account,  distributions by the fund and
sales by you of fund shares may cause you to be taxed.

Taxability of Distributions

Fund distributions may consist of income earned by the fund from sources such as
dividends  and  interest,  or  capital  gains  generated  from  the sale of fund
investments.  Distributions of income are taxed as ordinary income. Distribution
of capital gains are classified  either as short-term or long-term and are taxed
as follows:


<TABLE>
Type of distribution           Tax rate for 15% bracket      Tax rate for 28% bracket or above
- ---------------------------- ------------------------------ -------------------------------------
<S>                           <C>                            <C>
Short-term capital gains         Ordinary income rate               Ordinary income rate
Long-term capital gains                   10%                               20%
</TABLE>

The tax status of any  distribution  of capital  gains is determined by how long
the fund held the  underlying  security that was sold,  not by how long you have
been  invested  in the  fund or  whether  you  reinvest  your  distributions  in
additional  shares or take them as income.  American Century will detail the tax
status of fund  distributions  for each calendar year in an annual tax statement
from the fund.

Distributions may also be subject to state and local taxes.  Because  everyone's
tax situation is unique,  always  consult your tax  professional  about federal,
state and local tax consequences.

Taxes on transactions

Your  redemptions -- including  exchanges to other American Century funds -- are
subject to capital  gains tax.  The table above can provide a general  guide for
your potential tax liability when selling or exchanging fund shares. "Short-term
capital  gains" are gains on fund shares held for 12 months or less.  "Long-term
capital  gains" are gains on fund shares  held for more than 12 months.  If your
shares  decrease in value,  their sale or exchange will result in a long-term or
short-term capital loss.

**********LEFT MARGIN CALLOUTS

*    Buying a Dividend

     Purchasing  fund shares in a taxable  account shortly before a distribution
     is sometimes  known as "buying a dividend." In taxable  accounts,  you must
     pay income taxes on the  distribution  whether you take the distribution in
     cash or  reinvest  it.  In  addition,  you  will  have to pay  taxes on the
     distribution whether the value of your investment  decreased,  increased or
     remained  the same after you bought the fund  shares.  The risk in buying a
     dividend is that a fund's  portfolio may build up taxable gains  throughout
     the period covered by a  distribution,  as securities are sold at a profit.
     We distribute those gains to you, after subtracting any losses, even if you
     did not own the shares when the gains occurred. Thus if you buy a dividend,
     you incur the full tax liability of the  distribution  period,  but you may
     not enjoy the full benefit of the gains realized in the fund's portfolio.

**********END LEFT MARGIN CALLOUTS






Multiple Class Information

American   Century   offers  three  classes  of  the  funds:   Investor   Class,
Institutional Class and Advisor Class. The shares offered by this Prospectus are
Advisor  Class  shares and are offered  primarily  to  institutional  investors,
through  institutional   distribution   channels,   such  as  employer-sponsored
retirement plans, or through banks, broker-dealers and insurance companies.

American Century offers another class of shares that has no up-front or deferred
charges,  commissions  or 12b-1 fees.  The funds may offer a different  class of
shares primarily to institutional investors,  through institutional distribution
channels,  such  as  employer-sponsored  retirement  plans,  or  through  banks,
broker-dealers and insurance  companies.  The other classes have different fees,
expenses,  and/or minimum  investment  requirements  than the Advisor Class. The
difference  in the fee  structures  among  the  classes  is the  result of their
separate  arrangements  for  shareholder and  distribution  services and not the
result of any difference in amounts  charged by the advisor for core  investment
advisory  services.  Accordingly,  the core investment  advisory expenses do not
vary by  class.  Different  fees  and  expenses  will  affect  performance.  For
additional  information  concerning  the other  classes of shares not offered by
this Prospectus,  call us at 1-800-345-3533 or contact a sales representative or
financial intermediary who offers those classes of shares.


Service and Distribution Fees

Investment Company Act Rule 12b-1 permits mutual funds that adopt a written plan
to pay out of fund assets certain  expenses  associated with the distribution of
their shares. The funds' Advisor Class shares have a 12b-1 Plan. Under the Plan,
the  fund  pays  an  annual  fee of  0.50%  of fund  assets,  half  for  certain
shareholder and administrative  services and half for distribution services. The
advisor,  as paying  agent for the funds,  pays all or a portion of such fees to
the  banks,  broker-dealers  and  insurance  companies  that  make  such  shares
available.  Because  these fees are paid out of the fund's assets on an on-going
basis,  over time these fees will increase the cost of your  investment  and may
cost  you  more  than  paying  other  types of  sales  charges.  For  additional
information about the Plan and its terms, see "Multiple Class Structure - Master
Distribution  and  Shareholder  Services  Plan" in the  Statement of  Additional
Information.






Financial Highlights

Understanding the Financial Highlights

This table  itemizes what  contributed  to the changes in share price during the
period,  and compares  this to changes over the last five fiscal years (or less,
if the share class is not five years old).

On a per-share basis, it includes:

o        share price at the beginning of the period
o        investment income and capital gains or losses
o        distributions of income and capital gains paid to shareholders
o        share price at the end of the period

It also includes some key statistics for the period:

o    Total Return--the  overall  percentage of return of the fund,  assuming the
     reinvestment of all distributions
o    Expense Ratio--operating expenses as a percentage of average net assets
o    Net Income  Ratio--net  investment  income as a  percentage  of average net
     assets
o    Portfolio  Turnover--the  percentage  of  the  fund's  buying  and  selling
     activity

The  Financial  Highlights  for the fiscal years ended October 31, 1997 and 1998
have been audited by Deloitte & Touche LLP, independent  auditors.  Their report
is in the funds' annual  report,  which is  incorporated  by reference  into the
Statement of Additional Information, and is available upon request.







Limited-Term Bond

                                                        1998          1997
PER-SHARE DATA
Net Asset Value, Beginning of Year
                                                    ------------- --------------
Income from Investment Operations                
   Net Investment Income (dividends)             
   Net Realized and Unrealized Gain (Loss) on    
   Investment Transactions                       
                                                    ------------- --------------
   Total From Investment Operations              
                                                    ------------- --------------
Less Distributions                               
   From Net Investment Income (dividends)        
   In Excess of Net Realized Gains               
                                                    ------------- --------------
                                                    ------------- --------------
   Total Distributions                           
                                                    ------------- --------------
Net Asset Value, End of Year                     
                                                    ------------- --------------
Total Return(1)                               
RATIOS/SUPPLEMENTAL DATA
Ratio of Operating Expenses to Average Net Assets
Ratio of Net Investment Income to Average Net Assets
Portfolio Turnover Rate
Net Assets, End of Year (in thousands)

(1)  Total return assumes reinvestment of dividends and capital gains, if any.






Intermediate-Term Bond

                                                        1998          1997
PER-SHARE DATA
Net Asset Value, Beginning of Year
                                                    ------------- --------------
Income from Investment Operations                
   Net Investment Income (dividends)             
   Net Realized and Unrealized Gain (Loss) on    
   Investment Transactions                       
                                                    ------------- --------------
   Total From Investment Operations              
                                                    ------------- --------------
Less Distributions                               
   From Net Investment Income (dividends)        
   In Excess of Net Realized Gains               
                                                    ------------- --------------
                                                    ------------- --------------
   Total Distributions                           
                                                    ------------- --------------
Net Asset Value, End of Year                     
                                                    ------------- --------------
Total Return(1)                               
RATIOS/SUPPLEMENTAL DATA
Ratio of Operating Expenses to Average Net Assets
Ratio of Net Investment Income to Average Net Assets
Portfolio Turnover Rate
Net Assets, End of Year (in thousands)

(1)  Total return assumes reinvestment of dividends and capital gains, if any.






Bond

                                                        1998          1997
PER-SHARE DATA
Net Asset Value, Beginning of Year
                                                    ------------- --------------
Income from Investment Operations                
   Net Investment Income (dividends)             
   Net Realized and Unrealized Gain (Loss) on    
   Investment Transactions                       
                                                    ------------- --------------
   Total From Investment Operations              
                                                    ------------- --------------
Less Distributions                               
   From Net Investment Income (dividends)        
   In Excess of Net Realized Gains               
                                                    ------------- --------------
                                                    ------------- --------------
   Total Distributions                           
                                                    ------------- --------------
Net Asset Value, End of Year                     
                                                    ------------- --------------
Total Return(1)                               
RATIOS/SUPPLEMENTAL DATA
Ratio of Operating Expenses to Average Net Assets
Ratio of Net Investment Income to Average Net Assets
Portfolio Turnover Rate
Net Assets, End of Year (in thousands)

(1)  Total return assumes reinvestment of dividends and capital gains, if any.








Performance Information of the Other Class
The  Advisor  Class of the  funds was  established  in 1996.  As a  result,  the
following  financial  information  is  provided to show the  performance  of the
funds' original class of shares.  This class,  the Investor  Class,  has a total
expense ratio that is 0.25% lower than the Advisor  Class.  If the Advisor Class
existed  during the periods  presented,  its  performance  would have been lower
because of the additional expense.

This table  itemizes what  contributed  to the changes in share price during the
period,  and compares  this to changes over the last five fiscal years (or less,
if the share class is not five years old).

On a per-share basis, it includes:

o        share price at the beginning of the period
o        investment income and capital gains or losses
o        distributions of income and capital gains paid to shareholders
o        share price at the end of the period

It also includes some key statistics for the period:

o    total return--the  overall  percentage of return of the fund,  assuming the
     reinvestment of all distributions
o    expense ratio--operating expenses as a percentage of average net assets
o    net income  ratio--net  investment  income as a  percentage  of average net
     assets
o    portfolio  turnover--the  percentage  of  the  fund's  buying  and  selling
     activity


The  following  Financial  Highlights  have been  audited by  Deloitte & Touche,
independent  auditors.  Their report is in the funds'  annual  report,  which is
incorporated by reference into the Statement of Additional  Information,  and is
available  upon  request.   Prior  years'   information  was  audited  by  other
independent  auditors,  whose report thereon also is  incorporated  by reference
into the Statement of Additional Information.







<TABLE>
<CAPTION>
Limited-Term Bond

                                                           1998          1997           1996          1995          1994
PER-SHARE DATA
<S>                                                  <C>             <C>            <C>           <C>          <C>
Net Asset Value, Beginning of Year.........
                                                       ------------- -------------- ------------- ------------- --------------
Income from Investment Operations
   Net Investment Income (dividends).......
   Net Realized and Unrealized Gain (Loss) on
   Investment Transactions.................
                                                       ------------- -------------- ------------- ------------- --------------
   Total From Investment Operations........
                                                       ------------- -------------- ------------- ------------- --------------
Less Distributions
   From Net Investment Income (dividends)..
                                                       ------------- -------------- ------------- ------------- --------------
                                                       ------------- -------------- ------------- ------------- --------------
Net Asset Value, End of Year...............
                                                       ------------- -------------- ------------- ------------- --------------
Total Return(1)............................

RATIOS/SUPPLEMENTAL DATA

Ratio of Operating Expenses to 
   Average Net Assets ..................... 
Ratio of Net Investment Income to 
   Average Net Assets ..................... 
Net Assets, End of Year (in thousands).....

(1) Total return assumes reinvestment of dividends and capital gains, if any.
</TABLE>






<TABLE>
<CAPTION>
Intermediate-Term Bond

                                                           1998          1997           1996          1995          1994
PER-SHARE DATA
<S>                                                  <C>             <C>            <C>           <C>          <C>
Net Asset Value, Beginning of Year.........
                                                       ------------- -------------- ------------- ------------- --------------
Income from Investment Operations
   Net Investment Income (dividends).......
   Net Realized and Unrealized Gain (Loss) on
   Investment Transactions.................
                                                       ------------- -------------- ------------- ------------- --------------
   Total From Investment Operations........
                                                       ------------- -------------- ------------- ------------- --------------
Less Distributions
   From Net Investment Income (dividends)..
                                                       ------------- -------------- ------------- ------------- --------------
                                                       ------------- -------------- ------------- ------------- --------------
Net Asset Value, End of Year...............
                                                       ------------- -------------- ------------- ------------- --------------
Total Return(1)............................

RATIOS/SUPPLEMENTAL DATA

Ratio of Operating Expenses to 
   Average Net Assets ..................... 
Ratio of Net Investment Income to 
   Average Net Assets ..................... 
Net Assets, End of Year (in thousands).....

(1) Total return assumes reinvestment of dividends and capital gains, if any.
</TABLE>






<TABLE>
<CAPTION>
Bond

                                                           1998          1997           1996          1995          1994
PER-SHARE DATA
<S>                                                  <C>             <C>            <C>           <C>          <C>
Net Asset Value, Beginning of Year.........
                                                       ------------- -------------- ------------- ------------- --------------
Income from Investment Operations
   Net Investment Income (dividends).......
   Net Realized and Unrealized Gain (Loss) on
   Investment Transactions.................
                                                       ------------- -------------- ------------- ------------- --------------
   Total From Investment Operations........
                                                       ------------- -------------- ------------- ------------- --------------
Less Distributions
   From Net Investment Income (dividends)..
                                                       ------------- -------------- ------------- ------------- --------------
                                                       ------------- -------------- ------------- ------------- --------------
Net Asset Value, End of Year...............
                                                       ------------- -------------- ------------- ------------- --------------
Total Return(1)............................

RATIOS/SUPPLEMENTAL DATA

Ratio of Operating Expenses to 
   Average Net Assets ..................... 
Ratio of Net Investment Income to 
   Average Net Assets ..................... 
Net Assets, End of Year (in thousands).....

(1) Total return assumes reinvestment of dividends and capital gains, if any.
</TABLE>








More information about the funds is contained in these documents:

Annual and Semiannual Reports.  These reports contain more information about the
fund's  investments  and the market  conditions and investment  strategies  that
significantly  affected the fund's  performance during the most recent six-month
fiscal period.

Statement of Additional  Information.  The SAI contains a more  detailed,  legal
description  of the funds'  operations,  investment  restrictions,  policies and
practices. The SAI is incorporated by reference into this Prospectus. This means
that it is legally part of this Prospectus, even if you don't request a copy.

You also can get information about the funds (including the SAI) from the SEC.

v    In person.            SEC Public Reference Room
                           Washington, D.C.
                           Call 1-800-SEC-0330 for location and hours.
v    On the internet.      www.sec.gov.
v    By mail.              Public Reference Section
                           Washington, D.C.
                           20549-6009
                           The SEC will charge a fee for  copying the  documents
                           you request.


American Century Investments
P.O. Box 419385
Kansas City, Missouri 64141-6385

Institutional Services
1-800-345-3533 or 816-531-5575

Automated Information Line
1-800-345-8765

Fax
816-340-4655

www.americancentury.com

Telecommunications Device for the Deaf
1-800-345-1833 or 816-444-3038

Corporate, Not-for-Profit, Keogh,
SEP-, SARSEP-, SIMPLE-IRA and 403(b) Services
1-800-345-3533

Investment Company Act File No. 811-0816
<PAGE>
[american century logo(reg.sm)]
American
Century


Prospectus

January 29, 1999
- --------------------------------------------------------------------------------

AMERICAN CENTURY

Balanced

Advisor Class

The  Securities and Exchange  Commission  has not approved or disapproved  these
securities or determined if this Prospectus is accurate or complete.  Anyone who
tells you otherwise is committing a crime.

Distributed by Funds Distributor, Inc.






Reading a prospectus doesn't have to be a chore. We've done the hard work so you
can focus on what's  important--learning about the funds. Take a look inside and
you'll see this  prospectus  is  different  from  others.  It takes a  clear-cut
approach to fund information.

Here's what you'll find:

o    The funds' primary investments and risks

o    A description of who may or may not want to invest in the funds

o    Fund performance,  including returns for each year, best and worst quarters
     and average annual returns compared to the funds' benchmarks

o    An overview of ways to best manage your accounts

o    Helpful tips and definitions of key investment terms

Whether  you're a current  investor or  investing  in mutual funds for the first
time, this prospectus will give you a clear  understanding  of the funds. If you
have questions,  our Investor Services Representatives are available weekdays, 7
a.m. to 7 p.m.  Central time. Our toll-free  number is  1-800-345-2021.  We look
forward to helping you achieve your financial goals.

                                    Sincerely,


                                    Mark Killen
                                    Senior Vice President
                                    American Century Investment Services, Inc.














Table of Contents

An Overview of the Fund.....................................2

Fees and Expenses...........................................3

Detailed Information about the Fund.........................4

Management.................................................15

Investing with American Century............................18

Share Price and Distributions..............................21

Taxes......................................................22

Multiple Class Information.................................22

Financial Highlights.......................................23

Performance Information of Other Class.....................XX

Fund Reference
                    Fund Code     Ticker
- -------------------------------------------------
Balanced            031           TWBAX
- -------------------------------------------------

**********LEFT MARGIN CALLOUTS

Throughout  this  book  you'll  find  definitions  of key  investment  terms and
phrases.  When you see a word printed in green italics,  look for its definition
in the left margin.

*.......This symbol highlights special information and helpful tips.

**********END LEFT MARGIN CALLOUTS








An Overview of the Fund

What is the fund's investment goal?

This fund  seeks  long-term  capital  growth  and  current  income by  investing
approximately 60% of the fund's assets in equity securities, while the remainder
is invested in bonds and other fixed income securities.

What is the fund's primary investment strategy?

In  selecting  stocks for the equity  portion of Balanced,  the advisor  selects
primarily from the largest 1500 publicly traded U.S. companies. The fixed-income
portion  of the  fund is  invested  in a  diversified  portfolio  of  high-grade
securities. A more detailed description of the fund's investment strategy begins
on page XX

What are the fund's principal risks?

o Market Risk       the value of the fund's  shares will go up and down based on
                    the  performance of the companies  whose  securities it owns
                    and other factors affecting the securities market generally.

o Interest Rate Risk when interest  rates  change,   the  value  of  the  fund's
                    fixed-income securities will be affected.

o Principal Loss    as with all mutual funds, if you sell your shares when their
                    value is less than the price you paid, you will lose money.

Who may want to invest in the fund?

The fund may be a good investment if you are

0    seeking a fund that combines the potential  for  long-term  capital  growth
     with income

0    seeking  the  convenience  of a  fund  that  invests  in  both  equity  and
     fixed-income securities

0    comfortable with the risks associated with the fund's investment strategy

0    investing through an IRA or other tax-advantaged retirement plan

Who may not want to invest in the fund?

The fund may not be a good investment if you

0    do not want current income from your investment

0    investing for a short period of time

0    uncomfortable with volatility in the value of your investment

**********LEFT MARGIN CALLOUTS

*    An  investment  in the fund is not a bank  deposit  and is not  insured  or
     guaranteed  by the  Federal  Deposit  Insurance  Corporation  or any  other
     government agency.

**********END LEFT MARGIN CALLOUTS







Fees and Expenses

There are no sales loads or fees or other charges

0    to buy fund shares directly from American Century

0    to reinvest dividends in additional shares

0    to exchange into the Advisor Class shares of other American Century funds.

The following  tables describe the fees and expenses that you may pay if you buy
and hold shares of the fund.

<TABLE>
Annual Operating Expenses (expenses that are deducted from fund assets)

               Management Fee     Distribution and          Other Expenses2     Total Annual Fund
                                  Service (12b-1) Fees1                         Operating Expenses
- -------------- ------------------ ------------------------- ------------------- ---------------------
<S>            <C>                <C>                       <C>                 <C>  
Balanced       0.75%              0.50%                     0.00%               1.25%
- -------------- ------------------ ------------------------- ------------------- ---------------------
</TABLE>

1    The 12b-1 fee is designed to permit  investors  to purchase  Advisor  Class
     shares  through  broker-dealers,   banks,  insurance  companies  and  other
     financial  intermediaries.  A portion of the fee is used to compensate them
     for ongoing recordkeeping and administrative  services that would otherwise
     be  performed  by an  affiliate  of the  manager,  and a portion is used to
     compensate  them for  distribution  and  other  shareholder  services.  See
     "Service and Distribution Fees," page xx.

2    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 of Hypothetical Fund Costs

The  examples in the table  below are  intended to help you compare the costs of
investing in a fund with those of other mutual funds. Assuming you ...

o        invest $10,000 in the fund

o        redeem all of your shares at the end of the periods shown below

o        earn a 5% return each year and

o        incur the same operating expenses shown above

 ... your cost of investing in the fund would be:

             1 Year     3 Years    5 Years    10 Years
- ------------ ---------- ---------- ---------- -----------
Balanced     $13        $40        $68        $150
- ------------ ---------- ---------- ---------- -----------

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

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Detailed Information about the Fund

Balanced

What is the fund's investment objective?

The fund  seeks  long-term  capital  growth  and  current  income  by  investing
approximately 60% of the fund's assets in equity securities, while the remainder
is invested in bonds and other fixed income  securities.  This is a  fundamental
policy and cannot be changed without shareholder approval.

How does the fund pursue its investment objective?

With the equity  portion of the Balanced  portfolio,  the fund managers  utilize
quantitative  management  techniques in a two-step process that draws heavily on
computer technology. In the first step, the fund managers rank stocks, primarily
the 1,500 largest  publicly traded  companies in the United States  (measured by
the value of their  stock).  These  rankings are  determined by using a computer
model that  combines  measures  of a stock's  value,  as well as measures of its
growth  potential.  To measure value,  the manager uses ratios of stock price to
book value and stock price to cash flow,  among others.  To measure growth,  the
managers  use,  among  others,  the rate of growth of a company's  earnings  and
changes in its earnings estimates.

In the second step, the managers use a technique called portfolio  optimization.
In portfolio  optimization,  the manager uses a computer to build a portfolio of
stocks  from the  ranking  described  earlier  that it thinks  will  provide the
optimal  balance  between  risk and  expected  return.  The goal is to create an
equity portfolio that provides better returns than the S&P 500 without taking on
significant additional risk.

The  fixed-income  portion of the fund's  portfolio  is invested  primarily in a
diversified  portfolio of high-grade  government,  corporate,  asset-backed  and
similar securities payable in U.S. currency, with a minimum of 25% of the fund's
assets in  fixed-income  senior  securities.  At least  80% of the  fixed-income
assets will be invested in securities  that, at the time of purchase,  are rated
within the three  highest  categories  by a  nationally  recognized  statistical
rating  organization.  Up to 20% of the fixed income  portion may be invested in
the fourth category rated securities, and up to 15% may be invested in the fifth
category.  Under normal market  conditions the weighted average maturity for the
fixed-income portfolio will be in the three- to 10-year range.

The fund  managers do not attempt to time the  market.  Instead,  they intend to
keep the fund essentially fully invested in stocks regardless of the movement of
stock prices generally.  When the fund managers believe that it is prudent,  the
fund may  invest a portion  of its  assets in  convertible  securities,  foreign
securities,  short-term securities,  non-leveraged stock index futures contracts
and  other  similar  securities.  Stock  index  futures  contracts,  a  type  of
derivative  security,  can help the  fund's  cash  assets  remain  liquid  while
performing more like stocks. The fund has a policy governing stock index futures
and  similar  derivative  securities  to help  manage the risk of these types of
investments. For example, the fund managers cannot leverage the fund's assets by
investing in a derivative  security.  A complete  description of the derivatives
policy is included in the Statement of Additional Information.

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Senior Securities is a term that refers to the bonds of a company that are first
in line for payment if it has difficulties meeting its payment  obligations.  As
long as a series of a company's  bonds is not  subordinated to another series of
the company's bonds, it is considered "senior" debt.

Weighted  average  maturity is a tool that the advisor uses to  approximate  the
remaining  maturity of a fund's investment  portfolio.  Generally,  the longer a
fund's  weighted  average  maturity,  the more  sensitive  it is to  changes  in
interest rates.

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Additional  information about Balanced'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 six-month period.  You may get these
reports at no cost by calling us.

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*    Fixed-income  securities  are  rated by  nationally  recognized  securities
     ratings  organizations  (SROs), such as Moody's and Standard & Poor's. Each
     SRO has its own  system  for  classifying  securities,  but  each  tries to
     indicate a  company's  ability to make  timely  payments  of  interest  and
     principal. A detailed description of SROs, their ratings system and what we
     do if a security  isn't rated is included in the  Statement  of  Additional
     Information.

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What are the primary risks of investing in the fund?

The value of  Balanced's  shares  depends on the value of the stocks,  bonds and
other  securities  it owns.

o    The value of the individual equity securities  Balanced owns will go up and
     down  depending  on the  performance  of the  companies  that issued  them,
     general market and economic conditions, and investor confidence.

o    The value of the fund's fixed-income  securities will be affected primarily
     by rising  or  falling  interest  rates and the  continued  ability  of the
     issuers of these  securities  to make payments of interest and principal as
     they become due.

Generally,  when  interest  rates  rise,  the value of the  fund's  fixed-income
securities will decline.  The opposite is true when interest rates decline.  The
interest  rate risk for  Balanced  is higher  than for funds that have a shorter
weighted average maturity, such as money market and short-term bond funds.

The lowest rated bonds in which the fund may invest,  BBB- and  BB-rated  bonds,
contain  some  speculative  characteristics.  Having  these  bonds in the fund's
portfolio  means the fund's  value may go down more if  interest  rates or other
economic conditions change than if the fund contained only higher rated bonds.

As with all funds,  at any given time,  the value of your shares of Balanced 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.







Fund Performance History

The  performance  information  on this page is designed to help you see how fund
returns can vary.  Keep in mind that past  performance  does not predict how the
funds will perform in the future.

Annual Total Returns

The following bar chart shows the performance of the fund's Advisor Class shares
for each full year in the life of the class if less than 10 years.  It indicates
the volatility of the historical returns from year to year.

[GRAPH  DEPICTING  ANNUAL TOTAL RETURNS FOR BALANCED  SINCE  INCEPTION;  UPDATED
FIGURES NOT AVAILABLE]

Highest and Lowest Quarterly Returns
The highest and lowest returns of the fund's Advisor Class shares for a calendar
quarter  during  the  life of the  class  are  provided  below to  indicate  the
historical  short-term  volatility.  Shareholders should be aware, however, that
the fund is intended for investors with a long-term  investment  horizon and are
not managed for short-term results.

[GRAPH  DEPICTING  HIGHEST AND LOWEST  RETURNS  FOR  BALANCED  SINCE  INCEPTION;
UPDATED FIGURES NOT AVAILABLE]

Average Annual Returns

The following table shows the average annual returns of the fund's Advisor Class
shares for the periods indicated during the life of the class. The Blended Index
is included as a benchmark  for  performance  comparison.  The  benchmark  is an
unmanaged index that has no operating costs.

                    1 year      5 years      10 years
- ---------------------------------------------------------
Balanced            XXX%        XXX%         XX.X%
Blended Index*      XXX%        XXX%         XX.X%
- ---------------------------------------------------------

*  The Blended Index is a combination  of two widely known indices in proportion
   to the  approximate  asset mix of the fund.  Accordingly,  60% of the Blended
   Index consists of the performance of the S&P 500, which represents the equity
   portion of the fund,  and 40% of the  Blended  Index  consists  of the Lehman
   Intermediate  Government/Corporate  Index,  which represents the fixed income
   portion.

The inception date for the Advisor Class of the fund is January 6, 1997.

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The fund's total return for the period from  January 1, 1998,  to September  30,
1998, is:

Balanced                     X.XX%

*    For current  performance  information,  please call us at 1-800-345-2021 or
     visit American Century's Web site at www.americancentury.com.

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Performance Information of Other Class
The original class of shares of the fund was the Investor  Class of shares.  The
Advisor  Class  was not  established  until  1996.  For  information  about  the
historical performance of the original class of shares, see page xx.







Management

Who manages the fund?

The Board of Directors,  investment  advisor and portfolio  management team play
key roles in the management of the fund.

The Board of Directors

The Board of Directors  oversees the  management  of the fund and meets at least
quarterly  to  review  reports  about  fund  operations.  Although  the Board of
Directors does not manage the fund, it has hired an investment advisor to do so.
More than half of the Directors are independent of the fund's advisor,  that is,
they are not employed by and have no financial interest in the advisor.

The Investment Advisor

The fund's investment  advisor is American Century Investment  Management,  Inc.
The advisor has been  managing  mutual  funds  since 1958.  American  Century is
headquartered at 4500 Main Street, Kansas City, Missouri 64111.

The advisor is responsible  for managing the  investment  portfolios of the fund
and directing the purchase and sale of its  investment  securities.  The advisor
also arranges for transfer agency,  custody and all other services necessary for
the fund to operate.

For the services it provided to the fund during its most recent fiscal year, the
advisor received a unified management fee of 1.25% the average net assets of the
Advisor  Class of shares  of the  fund.  The  amount  of the  management  fee is
calculated on a  class-by-class  basis daily and paid monthly.  Out of that fee,
the  advisor  pays all  expenses  of  managing  and  operating  the fund  except
brokerage  expenses,  taxes,  interest,  fees and  expenses  of the  independent
Directors (including legal fees) and extraordinary expenses.






The Fund Management Team

The advisor uses teams of portfolio  managers,  assistant portfolio managers and
analysts to manage the fund. Teams meet regularly to review  portfolio  holdings
and to discuss purchase and sale activity.  Team members buy and sell securities
for a fund as they  see fit,  guided  by the  fund's  investment  objective  and
strategy.

Portfolio manager members of the investment team are identified below:

Norman E. Hoops
Norman E. Hoops, Senior Vice President and Portfolio Manager,  has been a member
of the team that  manages  Balanced  since  November  1989.  He joined  American
Century as Vice President and Portfolio Manager in November 1989. In April 1993,
he became Senior Vice  President.  He has a bachelor of arts degree from Indiana
University and an MBA from Butler University.

John Schniedwind
John Schniedwind,  Senior Vice President and Group  Leader-Quantitative  Equity,
has been a member of the team that manages  Balanced  since  November  1998.  He
joined American Century in 1982 and also supervises  other portfolio  management
teams. He has a bachelor of science degree from Purdue  University and an MBA in
finance from University of California. He is a Chartered Financial Analyst.

Jeffrey R. Tyler
Jeffrey R. Tyler, Senior Vice President and Portfolio Manager, has been a member
of the team that manages Balanced since November 1998. He has been with American
Century as a portfolio manager since January 1988. He has a bachelor's degree in
business  economics  from the University of California and an MBA in finance and
economics from Northwestern University. He is a Chartered Financial Analyst.

Jeffrey L. Houston
Jeffrey  L.  Houston,  Portfolio  Manager,  has been a member  of the team  that
manages  Balanced since June 1995. He joined  American  Century as an Investment
Analyst in November 1990 and was promoted to Portfolio Manager in 1994. He has a
bachelor of arts degree from the University of Delaware and an MPA from Syracuse
University. He is a Chartered Financial Analyst.

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*    Code of Ethics

     American Century has a Code of Ethics designed to ensure that the interests
     of fund shareholders come before the interests of the people who manage the
     fund.  Among  other  provisions,  the Code of  Ethics  prohibits  portfolio
     managers  and other  investment  personnel  from  buying  securities  in an
     initial public offering or from profiting from the purchase and sale of the
     same  security  within 60 calendar  days.  In addition,  the Code of Ethics
     requires  portfolio managers and other employees with access to information
     about the purchase or sale of  securities  by the funds to obtain  approval
     before executing permitted personal trades.

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Fundamental Investment Policies

Fundamental  investment  policies  contained  in  the  Statement  of  Additional
Information and the investment objectives of the fund may not be changed without
a shareholder  vote.  The Board of Directors  may change any other  policies and
investment strategies.


Year 2000 Issues

Many of the world's  computer  systems  currently  cannot properly  recognize or
process date-sensitive information relating to the Year 2000 and beyond. Because
this may impact the computer systems of various American  Century-affiliated and
external service providers for the fund,  American Century formally  initiated a
Year 2000  readiness  project in July 1997.  It  involves a team of  information
technology  professionals  assisted  by  outside  consultants  and  guided  by a
senior-level steering committee.  The team's goal is to assess the impact of the
Year 2000 on  American  Century's  systems,  renovate  or  replace  noncompliant
critical systems and test those systems. In addition,  the team has been working
to gather  information  about the Year 2000  efforts of the fund's  other  major
service providers.  Although American Century believes its critical systems will
function  properly in the Year 2000, this is not  guaranteed.  If the efforts of
American  Century or its external  service  providers  are not  successful,  the
fund's  business,  particularly  the provision of shareholder  services,  may be
hampered.

In  addition,  the  issuers  of  securities  the fund owns  could have Year 2000
computer  problems.  These problems could  negatively  affect the value of their
securities, which, in turn, could impact the fund's performance. The advisor has
established a process to gather publicly  available  information  about the Year
2000  readiness  of these  issuers.  However,  this  process may not uncover all
relevant  information,  and the  information  gathered  may not be complete  and
accurate.  Moreover, an issuer's Year 2000 readiness is only one of many factors
the fund  managers  may consider  when making  investment  decisions,  and other
factors may receive greater weight.






Investing with American Century
Eligibility for Advisor Class Shares
The  Advisor  Class  shares  are  intended  for  purchase  by   participants  in
employer-sponsored retirement or savings plans and for persons purchasing shares
through   broker-dealers,   banks,   insurance  companies  and  other  financial
intermediaries that provide various administrative and distribution services.

Investing Through Financial Intermediaries

If you do business  with us through a  financial  intermediary  or a  retirement
plan,  your ability to purchase,  exchange and redeem  shares will depend on the
policies of that entity. Some policy differences may include

o        minimum investment requirements
o        exchange policies
o        fund choices
o        cut-off time for investments

Please  contact  your  financial  intermediary  or plan  sponsor  for a complete
description  of its policies.  Copies of the funds' annual  reports,  semiannual
reports  and  Statements  of  Additional  Information  are  available  from your
intermediary or plan sponsor.

Certain  financial   intermediaries  perform  recordkeeping  and  administrative
services  for their  clients  that would  otherwise  be  performed  by  American
Century's transfer agent. In some  circumstances,  American Century will pay the
service provider a fee for performing those services.

Although  transactions in fund shares may be made directly with American Century
at no charge,  you also may purchase,  redeem and exchange  fund shares  through
financial  intermediaries that charge a transaction-based or other fee for their
services. Those charges are retained by the intermediary and are not shared with
American Century or the funds.

American Century has contracts with certain  financial  intermediaries  in which
they represent that they will track the time investment orders are received. The
fund has authorized those  intermediaries to accept orders on each fund's behalf
up to the time net asset value is determined.  Such orders will be priced at the
net  asset  value  next  determined  after  acceptance  of the order on a fund's
behalf.

Special requirements for large redemptions

The fund has elected to be governed by Rule 18f-1 under the  Investment  Company
Act,  which  obligates  each  fund to make  certain  redemptions  in cash.  This
requirement applies when a shareholder redeems,  during any 90-day period, up to
the lesser of  $250,000  or 1% of the assets of the fund.  Although  we normally
will pay  redemptions  in excess of this  limitation in cash,  American  Century
reserves the right under unusual  circumstances  to honor these  redemptions  in
kind by making payment in whole or in part in readily marketable securities.

If we make payment in securities, we will value the securities,  selected by the
fund,  in the same manner as we do in computing  the fund's net asset value.  We
will provide these  securities to the redeeming  plan  participant  or financial
intermediary  in lieu of cash without prior  notice.  If your  redemption  would
exceed this limit and you would like to avoid being paid in  securities,  please
provide us with an unconditional instruction to redeem at least 15 days prior to
the date on which the redemption  transaction is to occur.  The instruction must
specify the dollar amount or number of shares to be redeemed and the date of the
transaction.  This  minimizes  the effect of the  redemption on the fund and its
remaining shareholders.

While  each  fund   reserves   the  right  to  redeem  fund  shares   through  a
redemption-in-kind,  we do not expect to exercise  this option unless a fund has
an  unusually  low  level of cash to meet  redemptions  and/or  is  experiencing
unusually  strong  demands  for its cash.  Such a demand  might be  caused,  for
example, by extreme market conditions that result in an abnormally high level of
redemption  requests  concentrated  in a short  period of time.  Absent these or
similar circumstances, we expect redemptions in excess of $250,000 to be paid in
cash in any fund with assets of more than $50 million if total  redemptions from
any one account in any 90-day  period do not exceed  one-half of 1% of the total
assets of the fund.

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*    Financial intermediaries include banks, broker-dealers, insurance companies
     and investment advisors.

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Share Price and Distributions

Share Price

We determine the net asset value of the fund as of the close of regular  trading
on the New York Stock  Exchange  (usually 4 p.m.  Eastern  time) on each day the
Exchange is open. On days when the Exchange is not open, we do not calculate the
net asset value.  The net asset value of the fund share is the current  value of
its  investments,  minus any  liabilities,  divided by the number of fund shares
outstanding.

If current prices of securities  owned by a fund are not readily  available from
an independent  pricing  service,  the advisor may determine their fair value in
accordance with procedures adopted by the fund's Board of Directors.  Trading of
securities  in foreign  markets may not take place on every day the  Exchange is
open.  Also,  trading in some  foreign  markets  may take place on  weekends  or
holidays when the fund's net asset value is not calculated. So, the value of the
fund's  portfolio may be affected on days when you can't  purchase or redeem its
shares.

We will price your purchase,  exchange or redemption at the net asset value next
determined after we receive your transaction request in good order.

It is the responsibility of your plan recordkeeper or financial  intermediary to
transmit your purchase,  exchange and redemption requests to the fund's transfer
agent prior to the  applicable  cut-off  time for  receiving  orders and to make
payment for any purchase  transactions in accordance with the fund's  procedures
or any contractual arrangements with the fund or the fund's distributor in order
for you to receive that day's price.

We have contractual relationships with certain financial intermediaries in which
such intermediaries  represent that they have systems to track the time at which
investment  orders are received and to  segregate  orders  received at different
times.   Based  on  these   representations,   the  fund  has  authorized   such
intermediaries  and their designees to accept purchase and redemption  orders on
the fund's behalf up to the applicable  cut-off time. The fund will be deemed to
have received such orders upon acceptance by the duly  authorized  intermediary,
and such  orders  will be priced at the fund's net asset  value next  determined
after acceptance on the fund's behalf by such intermediary.

Distributions

Federal tax laws require the fund to make  distributions  to its shareholders in
order  to  qualify  as a  "regulated  investment  company."  Qualification  as a
regulated investment company means that the fund will not be subject to state or
federal income tax on amounts distributed.  The distributions  generally consist
of  dividends  and  interest  received  by the fund,  as well as  capital  gains
realized  on  the  sale  of  investment  securities.   Balanced  generally  pays
distributions  of capital gains,  if any, once a year in December.  The fund may
make more frequent  distributions  if necessary to comply with Internal  Revenue
Code provisions.

Participants in employer-sponsored retirement or savings plans must reinvest all
distributions.  For shareholders  investing  through taxable  accounts,  we will
reinvest  distributions unless you elect to receive them in cash. Please consult
our Investor Services Guide for further information regarding  distributions and
your distribution options.

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The net asset value of the fund is the price of its shares.

Capital gains is the increase in value of a capital asset,  such as stock,  from
the time it is  purchased.  Tax becomes  due on capital  gains once the asset is
sold.

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Taxes

The tax consequences of owning shares of the fund will vary depending on whether
you own them through a taxable or tax-deferred  account. Tax consequences result
from  distributions  by the fund of dividend and interest income it has received
and capital gains it has generated  through its  investment  activities,  and by
sales of fund shares by  investors  after the net asset value has  increased  or
decreased.

Tax-Deferred Accounts

If you purchase fund shares through a tax-deferred  account, such as an IRA or a
qualified  employer-sponsored  retirement  or savings  plan,  income and capital
gains  distributions  usually will not be subject to current taxation,  but will
accumulate in your account  under the plan on a  tax-deferred  basis.  Likewise,
moving  from one fund to  another  fund  within a plan or  tax-deferred  account
generally  will  not  cause  you to be  taxed.  For  information  about  the tax
consequences of making  purchases or withdrawals  through an employer  sponsored
retirement  or  savings  plan,  or  through  an IRA,  please  consult  your plan
administrator, your summary plan description or a professional tax advisor.

Taxable Accounts

If you own fund shares through a taxable account,  distributions by the fund and
sales by you of fund shares may cause you to be taxed.

Taxability of Distributions

Distributions  may  consist of income  earned by the fund from  sources  such as
dividends  and  interest,  or  capital  gains  generated  from  the sale of fund
investments.  Distributions of income are taxed as ordinary income. Distribution
of capital gains are classified  either as short-term or long-term and are taxed
as follows:

<TABLE>
Type of distribution          Tax rate for 15% bracket   Tax rate for 28% bracket or above
- ---------------------------- --------------------------- ----------------------------------
<S>                         <C>                           <C> 
Short-term capital gains        Ordinary income rate           Ordinary income rate
Long-term capital gains                 10%                             20%
</TABLE>

The tax status of any  distribution  of capital  gains is determined by how long
the fund held the  underlying  security that was sold,  not by how long you have
been  invested  in the  fund or  whether  you  reinvest  your  distributions  in
additional  shares  or take them as  income.  American  Century  will send you a
detail of the tax  status of fund  distributions  for each  calendar  year in an
annual tax statement from the fund.

Distributions may also be subject to state and local taxes.  Because  everyone's
tax situation is unique,  always  consult your tax  professional  about federal,
state and local tax consequences.

Taxes on Transactions

Your  redemptions -- including  exchanges to other American Century funds -- are
subject to capital  gains tax.  The table above can provide a general  guide for
your potential tax liability when selling or exchanging fund shares. "Short-term
capital  gains" are gains on fund  shares  held less than or equal to 12 months.
"Long-term capital gains" are gains on fund shares held for more than 12 months.
If your  shares  decrease  in value,  their sale or  exchange  will  result in a
long-term or short-term capital loss.

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*    Buying a Dividend

     Purchasing  fund shares in a taxable  account shortly before a distribution
     is sometimes  known as "buying a dividend." In taxable  accounts,  you must
     pay income taxes on the  distribution  whether you take the distribution in
     cash or  reinvest  it.  In  addition,  you  will  have to pay  taxes on the
     distribution whether the value of your investment  decreased,  increased or
     remained  the same after you bought the fund  shares.  The risk in buying a
     dividend is that a fund's  portfolio may build up taxable gains  throughout
     the period covered by a  distribution,  as securities are sold at a profit.
     We distribute those gains to you, after subtracting any losses, even if you
     did not own the shares when the gains occurred. Thus if you buy a dividend,
     you incur the full tax liability of the  distribution  period,  but you may
     not enjoy the full benefit of the gains realized in the fund's portfolio.

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Multiple Class Information

American   Century   offers  three  classes  of  the  funds:   Investor   Class,
Institutional Class and Advisor Class. The shares offered by this Prospectus are
Advisor  Class  shares and are offered  primarily  to  institutional  investors,
through  institutional   distribution   channels,   such  as  employer-sponsored
retirement plans, or through banks, broker-dealers and insurance companies.

American Century offers another class of shares that has no up-front or deferred
charges,  commissions  or 12b-1 fees.  The fund may offer a  different  class of
shares primarily to institutional investors,  through institutional distribution
channels,  such  as  employer-sponsored  retirement  plans,  or  through  banks,
broker-dealers and insurance  companies.  The other classes have different fees,
expenses,  and/or minimum  investment  requirements  than the Advisor Class. The
difference  in the fee  structures  among  the  classes  is the  result of their
separate  arrangements  for  shareholder and  distribution  services and not the
result of any difference in amounts  charged by the advisor for core  investment
advisory  services.  Accordingly,  the core investment  advisory expenses do not
vary by  class.  Different  fees  and  expenses  will  affect  performance.  For
additional  information  concerning  the other  classes of shares not offered by
this Prospectus,  call us at 1-800-345-3533 or contact a sales representative or
financial intermediary who offers those classes of shares.

Except as  described  below,  all  classes  of  shares of a fund have  identical
voting,  dividend,   liquidation  and  other  rights,  preferences,   terms  and
conditions.  The only  differences  among the various classes are (a) each class
may be subject to different  expenses specific to that class, (b) each class has
a different identifying designation or name, (c) each class has exclusive voting
rights with respect to matters solely  affecting such class,  (d) each class may
have different exchange privileges,  and (e) the Institutional Class may provide
for automatic  conversion  from that class into shares of the Investor  Class of
the same fund.]


Service and Distribution Fees
Investment Company Act Rule 12b-1 permits mutual funds that adopt a written plan
to pay out of fund assets certain  expenses  associated with the distribution of
their shares. The fund's Advisor Class shares have a 12b-1 Plan. Under the Plan,
the  fund  pays  an  annual  fee of  0.50%  of fund  assets,  half  for  certain
shareholder and administrative  services and half for distribution services. The
advisor,  as paying  agent for the funds,  pays all or a portion of such fees to
the  banks,  broker-dealers  and  insurance  companies  that  make  such  shares
available.  Because  these fees are paid out of the fund's assets on an on-going
basis,  over time these fees will increase the cost of your  investment  and may
cost  you  more  than  paying  other  types of  sales  charges.  For  additional
information about the Plan and its terms, see "Multiple Class Structure - Master
Distribution  and  Shareholder  Services  Plan" in the  Statement of  Additional
Information.






Financial Highlights

Understanding the Financial Highlights

This table  itemizes what  contributed  to the changes in share price during the
period,  and compares  this to changes over the last five fiscal years (or less,
if the share class is not five years old).

On a per-share basis, it includes:

o        share price at the beginning of the period
o        investment income and capital gains or losses
o        distributions of income and capital gains paid to shareholders
o        share price at the end of the period

It also includes some key statistics for the period:

o    Total Return--the  overall  percentage of return of the fund,  assuming the
     reinvestment of all distributions
o    Expense Ratio--operating expenses as a percentage of average net assets
o    Net Income  Ratio--net  investment  income as a  percentage  of average net
     assets
o    Portfolio  Turnover--the  percentage  of  the  fund's  buying  and  selling
     activity

The  Financial  Highlights  for the fiscal years ended October 31, 1997 and 1998
have been audited by Deloitte & Touche LLP, independent  auditors.  Their report
is in the fund's annual  report,  which is  incorporated  by reference  into the
Statement of Additional Information, and is available upon request.






Balanced

                                                        1998          1997
PER-SHARE DATA
Net Asset Value, Beginning of Year
                                                    ------------- --------------
Income from Investment Operations
   Net Investment Income (dividends)
   Net Realized and Unrealized Gain (Loss) on
   Investment Transactions
                                                    ------------- --------------
   Total From Investment Operations
                                                    ------------- --------------
Less Distributions
   From Net Investment Income (dividends)
                                                    ------------- --------------
                                                    ------------- --------------
Net Asset Value, End of Year
                                                    ------------- --------------
Total Return(1)
RATIOS/SUPPLEMENTAL DATA
Ratio of Operating Expenses to Average Net Assets
Ratio of Net Investment Income to Average Net Assets
Net Assets, End of Year (in thousands)

(1)  Total return assumes reinvestment of dividends and capital gains, if any.









Performance Information of the Other Class

The  Advisor  Class of the  funds was  established  in 1996.  As a  result,  the
following  financial  information  is  provided to show the  performance  of the
funds' original class of shares.  This class,  the Investor  Class,  has a total
expense ratio that is 0.25% lower than the Advisor  Class.  If the Advisor Class
existed  during the periods  presented,  its  performance  would have been lower
because of the additional expense.

This table  itemizes what  contributed  to the changes in share price during the
period,  and compares  this to changes over the last five fiscal years (or less,
if the share class is not five years old).

On a per-share basis, it includes:

o        share price at the beginning of the period
o        investment income and capital gains or losses
o        distributions of income and capital gains paid to shareholders
o        share price at the end of the period

It also includes some key statistics for the period:

o    total return--the  overall  percentage of return of the fund,  assuming the
     reinvestment of all distributions
o    expense ratio--operating expenses as a percentage of average net assets
o    net income  ratio--net  investment  income as a  percentage  of average net
     assets
o    portfolio  turnover--the  percentage  of  the  fund's  buying  and  selling
     activity


The following  Financial  Highlights for the fiscal years ended October 31, 1997
and 1998 have been  audited by Deloitte & Touche,  independent  auditors.  Their
report is in the funds' annual report,  which is  incorporated by reference into
the Statement of Additional  Information,  and is available upon request.  Prior
years'  information  was  audited by other  independent  auditors  whose  report
thereon also is  incorporated  by  reference  into the  Statement of  Additional
Information.






<TABLE>
<CAPTION>
Balanced

                                                           1998          1997           1996          1995          1994
PER-SHARE DATA
<S>                                                     <C>          <C>            <C>            <C>            <C>
Net Asset Value, Beginning of Year
                                                       ------------- -------------- ------------- ------------- --------------
Income from Investment Operations
   Net Investment Income (dividends)
   Net Realized and Unrealized Gain (Loss) on
   Investment Transactions
                                                       ------------- -------------- ------------- ------------- --------------
   Total From Investment Operations
                                                       ------------- -------------- ------------- ------------- --------------
Less Distributions
   From Net Investment Income (dividends)
                                                       ------------- -------------- ------------- ------------- --------------
                                                       ------------- -------------- ------------- ------------- --------------
Net Asset Value, End of Year
                                                       ------------- -------------- ------------- ------------- --------------
Total Return(1)
RATIOS/SUPPLEMENTAL DATA
Ratio of Operating Expenses to Average Net Assets
Ratio of Net Investment Income to Average Net Assets
Net Assets, End of Year (in thousands)
</TABLE>

(1)  Total return assumes reinvestment of dividends and capital gains, if any.








More information about the funds is contained in these documents:

Annual and Semiannual Reports.  These reports contain more information about the
fund's  investments  and the market  conditions and investment  strategies  that
significantly  affected the fund's  performance during the most recent six-month
fiscal period.

Statement of Additional  Information.  The SAI contains a more  detailed,  legal
description  of the funds'  operations,  investment  restrictions,  policies and
practices. The SAI is incorporated by reference into this Prospectus. This means
that it is legally part of this Prospectus, even if you don't request a copy.

You also can get information about the funds (including the SAI) from the SEC.

v    In person.            SEC Public Reference Room
                           Washington, D.C.
                           Call 1-800-SEC-0330 for location and hours.
v    On the internet.      www.sec.gov.
v    By mail.              Public Reference Section
                           Washington, D.C.
                           20549-6009
                           The SEC will charge a fee for  copying the  documents
                           you request.


American Century Investments
P.O. Box 419385
Kansas City, Missouri 64141-6385

Institutional Services
1-800-345-3533 or 816-531-5575

Automated Information Line
1-800-345-8765

Fax
816-340-4655

www.americancentury.com

Telecommunications Device for the Deaf
1-800-345-1833 or 816-444-3038

Corporate, Not-for-Profit, Keogh,
SEP-, SARSEP-, SIMPLE-IRA and 403(b) Services
1-800-345-3533

Investment Company Act File No. 811-0816
<PAGE>
[american century logo(reg.sm)]
American
Century

Prospectus


January 29, 1999
- --------------------------------------------------------------------------------

AMERICAN CENTURY

High-Yield

Advisor Class

The  Securities and Exchange  Commission  has not approved or disapproved  these
securities or determined if this Prospectus is accurate or complete.  Anyone who
tells you otherwise is committing a crime.

Distributed by Funds Distributor, Inc.






Reading a prospectus doesn't have to be a chore. We've done the hard work so you
can focus on what's  important--learning  about the fund. Take a look inside and
you'll see this  prospectus  is  different  from  others.  It takes a  clear-cut
approach to fund information.

Here's what you'll find:

o    The fund's primary investments and risks

o    A description of who may or may not want to invest in the fund

o    Fund performance,  including returns for each year, best and worst quarters
     and average annual returns compared to the fund's benchmarks

o    An overview of ways to best manage your accounts

o    Helpful tips and definitions of key investment terms

Whether  you're a current  investor or  investing  in mutual funds for the first
time, this prospectus will give you a clear  understanding  of the funds. If you
have questions,  our Investor Services Representatives are available weekdays, 7
a.m. to 7 p.m.  Central time. Our toll-free  number is  1-800-345-2021.  We look
forward to helping you achieve your financial goals.

                                  Sincerely,


                                  Mark Killen
                                  Senior Vice President
                                  American Century Investment Services, Inc.











Table of Contents

An Overview of the Fund.....................................2

Fees and Expenses...........................................3

Detailed Information about the Fund.........................4

Basics of Fixed Income Investing............................6

Management..................................................8

Investing with American Century............................12

Share Price and Distributions..............................15

Taxes......................................................16

Multiple Class Information.................................17

Financial Highlights.......................................18

Performance Information of Other Class.....................18

Fund Reference
                     Fund Code       Ticker
- -------------------------------------------------
High-Yield           101             ABHIX
- -------------------------------------------------

**********LEFT MARGIN CALLOUTS

Throughout  this  book  you'll  find  definitions  of key  investment  terms and
phrases.  When you see a word printed in green italics,  look for its definition
in the left margin.

*........This symbol highlights special information and helpful tips.

**********END LEFT MARGIN CALLOUTS








An Overview of the Fund

What is the fund's investment goals?

This fund seeks high current income.  As a secondary  objective,  the fund seeks
capital  appreciation,  but only when consistent  with its primary  objective of
maximizing current income.

What are the fund's primary investment strategies and principal risks?

The fund invests primarily in a diversified  portfolio of lower-rated  corporate
debt  securities,  which are subject to greater credit risk and consequently pay
higher  yields.  Securities  of this  type are  subject  to  substantial  risks,
including

o        credit risk
o        liquidity risk
o        interest rate risk

Additional  important  information  about the fund's  investment  strategies and
risks begin on page 4.

**********LEFT MARGIN CALLOUT

Debt  securities  means bonds,  notes and  debentures.  Debt securities also are
sometimes called fixed income securities.

**********END LEFT MARGIN CALLOUT

Who may want to invest in the fund?

The funds may be a good investment if you are

0    seeking high current income with the potential for capital gains

0    investing through an IRA or other tax-advantaged retirement plan

Who may not want to invest in the fund?

The fund may not be a good investment if you are

0    uncomfortable with the risk of investing in lower-rated debt securities

0    looking for the added security of FDIC insurance

**********LEFT MARGIN CALLOUTS

*    An  investment  in the fund is not a bank  deposit  and is not  insured  or
     guaranteed  by the  Federal  Deposit  Insurance  Corporation  or any  other
     government agency.

**********END LEFT MARGIN CALLOUTS







Fees and Expenses

There are no sales loads or fees or other charges

0    to buy fund shares directly from American Century

0    to reinvest dividends in additional shares

0    to exchange into the Advisor Class shares of other American Century funds

The following  tables describe the fees and expenses that you may pay if you buy
and hold shares of the fund.

<TABLE>
Annual Operating Expenses (expenses that are deducted from fund assets)

                Management Fee     Distribution and Service     Other Expenses2    Total Annual Fund
                                   (12b-1) Fee1                                    Operating Expenses
- --------------- ------------------ ---------------------------- ------------------ ----------------------
<S>             <C>                <C>                          <C>                <C>  
High-Yield      0.65%              0.50%                        0.00%              1.15%
- --------------- ------------------ ---------------------------- ------------------ ----------------------
</TABLE>

1    The 12b-1 fee is designed to permit  investors  to purchase  Advisor  Class
     shares  through  broker-dealers,   banks,  insurance  companies  and  other
     financial  intermediaries.  A portion of the fee is used to compensate them
     for ongoing recordkeeping and administrative  services that would otherwise
     be  performed  by an  affiliate  of the  manager,  and a portion is used to
     compensate  them for  distribution  and  other  shareholder  services.  See
     "Service and Distribution Fees," page xx.

2    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.

Examples of Hypothetical Fund Costs

The  examples in the table  below are  intended to help you compare the costs of
investing in the fund with those of other mutual funds. Assuming you. . .

o        invest $10,000 in the fund

o        redeem all of your shares at the end of the periods shown below

o        earn a 5% return each year and

o        incur the same operating expenses shown above

 . . . your cost of investing in the fund would be:

                 1 Year     3 Years    5 Years    10 Years
- ---------------- ---------- ---------- ---------- ------------
High-Yield       $12        $37        $63        $140
- ---------------- ---------- ---------- ---------- ------------

**********LEFT MARGIN CALLOUTS

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

**********END LEFT MARGIN CALLOUTS







Detailed Information About the Fund

High-Yield

What is the fund's investment objective?

The fund seeks high current  income by investing in a  diversified  portfolio of
high-yielding corporate bonds and other debt securities.

How does the fund pursue its investment objective?

The fund invests  primarily in high-yield  corporate  debt  securities,  with an
emphasis on securities that are rated below investment grade.

**********LEFT MARTIN CALLOUT

*    A  high-yield  security  is one that has been  rated  below one of the four
     highest   categories  by  a  nationally   recognized   statistical   rating
     organization,  or  determined  by the  investment  advisor to be of similar
     quality.  A discussion of the  authorized  credit quality range of the fund
     and credit risk starts on page XX.

**********END LEFT MARTIN CALLOUT

Under normal market conditions,  the fund managers will maintain at least 80% of
the  fund's  total  assets in  high-yielding  corporate  bonds  and  other  debt
instruments  (including income producing convertible and preferred  securities).
The remaining  assets may be invested in common  stocks or other  equity-related
securities.  The fund buys securities that are below investment grade, including
so-called junk bonds.  Issuers of these  securities  often have short  financial
histories or have questionable credit.

Up to 40% of the fund's total assets may be invested in fixed-income obligations
of foreign issuers.  Under normal market  conditions,  the fund may invest up to
20% of its  assets,  and for  temporary  defensive  purposes,  up to 100% of its
assets, in short-term money market instruments and U.S. government securities.

The fund has no  average  maturity  limitations,  but it  typically  invests  in
intermediate- and long-term bonds.

What are the primary risks of investing in the fund?

The fund's  investments  often have high  credit  risk,  which helps it pursue a
higher yield than more conservatively  managed bond funds. Issuers of high-yield
securities are more vulnerable to real or perceived economic changes (such as an
economic  downturn or a prolonged  period of rising interest  rates),  political
changes  or adverse  developments  specific  to the  issuer.  Adverse  economic,
political  and  other  developments  may be more  likely  to cause an  issuer of
low-quality bonds to default on its obligation to pay the interest and principal
due under its securities.

The market for  lower-quality  debt securities is generally less liquid than the
market  for   higher-quality   securities.   Adverse   publicity   and  investor
perceptions,  as well as new and proposed laws, also may have a greater negative
impact on the market for lower-quality securities.

Because the fund typically invests in intermediate-term bonds, the interest rate
risk for  High-Yield  is higher  than for funds with  shorter  weighted  average
maturities,  such as money market and short-term bond funds.  See the discussion
on page [xx] for more information  about the affects of changing  interest rates
on the fund's portfolio.

High-Yield  can  invest  up to  40% of  its  assets  in  securities  of  foreign
companies.   Foreign  securities  can  have  certain  unique  risks,   including
fluctuations  in  currency  exchange  rates,  unstable  political  and  economic
structures,  reduced  availability of public information and the lack of uniform
financial reporting and regulatory practices similar to those that apply to U.S.
issuers.

The fund's  share  value will  fluctuate.  In  general,  funds that have  higher
potential  income  have a higher  potential  loss.  If you sell your shares when
their value is less than the price you paid, you will lose money.

Fund Performance History
The Advisor Class of shares was established in 1997, however, no shares had been
issued prior to the fund's fiscal year end. The original class of shares was the
Investor Class of shares.  For information  about the historical  performance of
the original class of shares, see page xx.





Basics of Fixed Income Investing

Debt Securities

When a fund buys a debt security,  which is also called a fixed income security,
it is  essentially  lending money to the issuer of the security.  Notes,  bonds,
commercial paper and Treasury bills are examples of debt  securities.  After the
issuer  first  sells  the  debt  security,  it may be  bought  and sold by other
investors.  The price of the  security  may rise or fall based on many  factors,
including changes in interest rates, inflation and liquidity.

The fund managers decide which debt securities to buy and sell by

0    identifying securities that satisfy the fund's credit quality requirements

0    evaluating  the  current  economic  conditions  and  assessing  the risk of
     inflation

0    evaluating  special  features of the securities  that may make them more or
     less attractive

Weighted Average Maturity

Like most loans,  debt  securities  eventually must be repaid (or refinanced) at
some date.  This date is called the maturity  date. The number of days left to a
debt  security's  maturity date is called the remaining  maturity.  The longer a
debt  security's  remaining  maturity,  the more  sensitive  it is to changes in
interest rates.

Because a bond fund will own many debt  securities,  the advisor  calculates the
average of the remaining  maturities of all of the debt securities the fund owns
to evaluate the interest rate sensitivity of the entire portfolio.  This average
is  weighted  according  to the size of the fund's  individual  holdings  and is
called weighted average maturity. The following chart shows how an advisor would
calculate  the  weighted  average  maturity  for a fund that owned only two debt
securities.

<TABLE>
                       Amount of Security Owned       Percent of Portfolio   Remaining Maturity      Weighted Maturity
- ---------------------- ------------------------------ ---------------------- ----------------------- ----------------------
<S>                    <C>                            <C>                    <C>                     <C>     
Debt Security A        $100,000                       25%                    1,000 days              250 days
Debt Security B        $300,000                       75%                    10,000 days             7500 days
Weighted Average Maturity                                                                            7750 days
</TABLE>

Types of Risk

The basic types of risk that fixed income securities face are described below.

Interest Rate Risk

Generally,  interest  rates and the prices of debt  securities  move in opposite
directions.  So when  interest  rates fall,  the prices of most debt  securities
rise;  when interest rates rise,  prices fall.  Because the fund invests in debt
securities, changes in interest rates will affect the fund's performance.

The degree to which interest rate changes affect the fund's  performance  varies
and is related to the weighted average  maturity of the fund. For example,  when
interest  rates rise, you can expect the share value of a long-term bond fund to
fall more than that of a short-term  bond fund. When rates fall, the opposite is
true. This sensitivity to interest rate changes is called interest rate risk.

***********LEFT MARGIN CALLOUTS

*    Weighted  average  maturity is a tool that the advisor uses to  approximate
     the remaining maturity of a fund's investment portfolio.

*    The longer a fund's weighted average maturity,  the more sensitive it is to
     changes in interest rates.

***********END LEFT MARGIN CALLOUTS






When interest rates change, longer maturity bonds experience a greater change in
price.  The following  table shows the effect of a 1% increase in interest rates
on the price of 7% coupon bonds of differing maturities:

Remaining Maturity    Current Price   Price after 1% increase   Change in price
- ------------------ ----------------- ------------------------- -----------------
1 year                      $100.00                    $99.06            -0.94%
3 years                      100.00                     97.38            -2.62%
10 years                     100.00                     93.20            -6.80%
30 years                     100.00                     88.69           -11.31%

Credit Risk

Credit risk is the risk that an obligation won't be paid and a loss will result.
A high  credit  rating  indicates  a high  degree of  confidence  by the ratings
organization  that  the  issuer  will  be able to  withstand  adverse  business,
financial or economic  conditions  and be able to make  interest  and  principal
payments on time. Conversely,  a lower credit rating indicates a greater risk of
nonpayment.  A lower rating may also  indicate that the issuer has a more senior
series of debt  securities,  which  means that if the  issuer  has  difficulties
making  its  payments,  the  more  senior  series  of debt is  first in line for
payment.

It's not as simple as buying the highest rated debt securities,  though.  Higher
credit ratings  usually mean lower interest  rates,  so investors often purchase
securities that aren't the  highest-rated to increase return. If a fund, such as
High-Yield,  purchases  lower-rated  securities  in an effort to achieve  higher
yields, it assumes additional credit risk.

The following  chart shows the  authorized  credit  quality  ranges for the fund
offered by this Prospectus.

- ------- --------- ------ ------- -------- ------ -------- ------- ------ -------
             A-1            A-2      A-3
             P-1            P-2      P-3
           MIG-1          MIG-2    MIG-3
            SP-1           SP-2     SP-3
  AAA         AA    A       BBB       BB    B      CCC      CC      C      D
- ------------------------ -------------------------------- ----------------------
         XX                           YY                           XX
- ------------------------ -------------------------------- ----------------------

XX   Denotes authorized quality

YY   Denotes expected quality range of at least 80% of total assets of the fund

Liquidity Risk

Debt securities can become  difficult to sell for a variety of reasons,  such as
lack of an active trading market.  When a fund's investments become difficult to
sell, it is said to have a problem with  liquidity.  The chance that a fund will
have liquidity issues is called liquidity risk.

Inflation Risk

The safest investments usually have the lowest potential income and performance.
There  is  a  risk,   then,  that  returns  from  the  investment  may  fail  to
significantly  outpace  inflation.  Even if the value of your investment has not
gone  down,  your  money  will  not be  worth  as much as if  there  had been no
inflation.  Your after-inflation  return may be quite small. This risk is called
inflation risk.

**********LEFT MARGIN CALLOUTS

*    Credit quality may be reduced when

     o    a high debt level
     o    a short operating history
     o    a senior level of debt
     o    a difficult competitive environment

*    The Statement of Additional  Information provides a detailed description of
     these securities ratings.

**********END LEFT MARGIN CALLOUTS







Management

Who manages the funds?

The Board of Directors,  investment  advisor and fund  management  team play key
roles in the management of the funds.

The Board of Directors

The Board of Directors  oversees the  management of the funds and meets at least
quarterly  to  review  reports  about  fund  operations.  Although  the Board of
Directors  does not manage the funds,  it has hired an investment  advisor to do
so. More than half of the Directors are independent of the funds' advisor,  that
is, they are not employed by and have no financial interest in the advisor.

The Investment Advisor

The funds' investment  advisor is American Century Investment  Management,  Inc.
The advisor has been  managing  mutual  funds  since 1958.  American  Century is
headquartered at 4500 Main Street, Kansas City, Missouri 64111.

The advisor is responsible  for managing the investment  portfolios of the funds
and directing the purchase and sale of their investment securities.  The advisor
also arranges for transfer agency,  custody and all other services necessary for
the funds to operate.

For the services it provided to the fund during its most recent fiscal year, the
advisor received a unified management fee of 1.15% percentage of the average net
assets of the Advisor Class of shares of the fund.  The amount of the management
fee for the fund is calculated on a class-by-class basis daily and paid monthly.
Out of that fee, the advisor paid all  expenses of managing  and  operating  the
fund  except  brokerage  expenses,  taxes,  interest,  fees and  expenses of the
independent Directors (including legal counsel fees) and extraordinary expenses.







The Fund Management Team

The advisor uses teams of portfolio  managers,  assistant portfolio managers and
analysts to manage the funds.  Teams meet regularly to review portfolio holdings
and to discuss purchase and sale activity.  Team members buy and sell securities
for a fund as they  see fit,  guided  by the  fund's  investment  objective  and
strategy.

Portfolio Manager members of the investment team are identified below:

Norman E. Hoops
Mr. Hoops, Senior Vice President and Portfolio Manager, has been a member of the
team that manages High-Yield since its inception.  He joined American Century as
Vice President and Portfolio  Manager in November 1989. In April 1993, he became
Senior Vice President.  . He has a bachelor of arts from Indiana  University and
an MBA from Butler University.

Theresa C. Fennell
Ms.  Fennell,  Portfolio  Manager,  has been a member of the team  that  manages
High-Yield since its inception.  She joined American Century in June 1997. Prior
to joining American Century,  she was an Associate  Portfolio Manager with Smith
Barney  Mutual  Funds  Management,  Inc. She has a bachelor of arts in economics
from the University of Virginia. Ms. Fennell is a Chartered Financial Analyst.

**********LEFT MARGIN CALLOUTS

*    Code of Ethics

     American Century has a Code of Ethics designed to ensure that the interests
     of fund shareholders come before the interests of the people who manage the
     funds.  Among  other  provisions,  the Code of Ethics  prohibits  portfolio
     managers  and other  investment  personnel  from  buying  securities  in an
     initial public offering or from profiting from the purchase and sale of the
     same  security  within 60 calendar  days.  In addition,  the Code of Ethics
     requires  portfolio managers and other employees with access to information
     about the purchase or sale of  securities  by the funds to obtain  approval
     before executing permitted personal trades.

**********END LEFT MARGIN CALLOUTS






Fundamental Investment Policies

Fundamental  investment  policies  contained  in  the  Statement  of  Additional
Information and the investment objectives of the fund may not be changed without
a shareholder  vote.  The Board of Directors  may change any other  policies and
investment strategies.

Year 2000 Issues

Many of the world's  computer  systems  currently  cannot properly  recognize or
process date-sensitive information relating to the Year 2000 and beyond. Because
this may impact the computer systems of various American  Century-affiliated and
external service providers for the fund,  American Century formally  initiated a
Year 2000  readiness  project in July 1997.  It  involves a team of  information
technology  professionals  assisted  by  outside  consultants  and  guided  by a
senior-level steering committee.  The team's goal is to assess the impact of the
Year 2000 on  American  Century's  systems,  renovate  or  replace  noncompliant
critical systems and test those systems. In addition,  the team has been working
to gather  information  about the Year 2000  efforts of the fund's  other  major
service providers.  Although American Century believes its critical systems will
function  properly in the Year 2000, this is not  guaranteed.  If the efforts of
American  Century or its external  service  providers  are not  successful,  the
fund's  business,  particularly  the provision of shareholder  services,  may be
hampered.

In  addition,  the  issuers  of  securities  the fund owns  could have Year 2000
computer  problems.  These problems could  negatively  affect the value of their
securities, which, in turn, could impact the fund's performance. The advisor has
established a process to gather publicly  available  information  about the Year
2000  readiness  of these  issuers.  However,  this  process may not uncover all
relevant  information,  and the  information  gathered  may not be complete  and
accurate.  Moreover, an issuer's Year 2000 readiness is only one of many factors
the fund  managers  may consider  when making  investment  decisions,  and other
factors may receive greater weight.








Investing with American Century
Eligibility for Advisor Class Shares
The  Advisor  Class  shares  are  intended  for  purchase  by   participants  in
employer-sponsored retirement or savings plans and for persons purchasing shares
through   broker-dealers,   banks,   insurance  companies  and  other  financial
intermediaries that provide various administrative and distribution services.

Investing Through Financial Intermediaries

If you do business  with us through a  financial  intermediary  or a  retirement
plan,  your ability to purchase,  exchange and redeem  shares will depend on the
policies of that entity. Some policy differences may include

o        minimum investment requirements
o        exchange policies
o        fund choices
o        cut-off time for investments

Please  contact  your  financial  intermediary  or plan  sponsor  for a complete
description  of its policies.  Copies of the funds' annual  reports,  semiannual
reports  and  Statements  of  Additional  Information  are  available  from your
intermediary or plan sponsor.

Certain  financial   intermediaries  perform  recordkeeping  and  administrative
services  for their  clients  that would  otherwise  be  performed  by  American
Century's transfer agent. In some  circumstances,  American Century will pay the
service provider a fee for performing those services.

Although  transactions in fund shares may be made directly with American Century
at no charge,  you also may purchase,  redeem and exchange  fund shares  through
financial  intermediaries that charge a transaction-based or other fee for their
services. Those charges are retained by the intermediary and are not shared with
American Century or the funds.

American Century has contracts with certain  financial  intermediaries  in which
they represent that they will track the time investment orders are received. The
fund has authorized those  intermediaries to accept orders on each fund's behalf
up to the time net asset value is determined.  Such orders will be priced at the
net  asset  value  next  determined  after  acceptance  of the order on a fund's
behalf.

**********LEFT MARGIN CALLOUTS

*    Financial intermediaries include banks, broker-dealers, insurance companies
     and investment advisors.

**********END LEFT MARGIN CALLOUTS






Share Price and Distributions

Share Price

We determine the net asset value of the fund as of the close of regular  trading
on the New York Stock  Exchange  (usually 4 p.m.  Eastern  time) on each day the
Exchange is open. On days when the Exchange is not open, we do not calculate the
net asset value. The net asset value of a fund share is the current value of its
investments,  minus  any  liabilities,  divided  by the  number  of fund  shares
outstanding.

If current prices of securities  owned by a fund are not readily  available from
an independent  pricing  service,  the advisor may determine their fair value in
accordance with procedures adopted by the fund's Board of Directors.  Trading of
securities  in foreign  markets may not take place on every day the  Exchange is
open.  Also,  trading in some  foreign  markets  may take place on  weekends  or
holidays  when a fund's net asset  value is not  calculated.  So, the value of a
fund's  portfolio  may be  affected  on days when you can't  purchase  or redeem
shares of the fund.

We will price your purchase,  exchange or redemption at the net asset value next
determined after we receive your transaction request in good order.

It is the responsibility of your plan recordkeeper or financial  intermediary to
transmit your purchase,  exchange and redemption requests to the fund's transfer
agent prior to the  applicable  cut-off  time for  receiving  orders and to make
payment for any purchase  transactions in accordance with the fund's  procedures
or any  contractual  arrangements  with the fund's or the fund's  distributor in
order for you to receive that day's price.

We have contractual relationships with certain financial intermediaries in which
such intermediaries  represent that they have systems to track the time at which
investment  orders are received and to  segregate  orders  received at different
times.   Based  on  these   representations,   the  fund  has  authorized   such
intermediaries  and their designees to accept purchase and redemption  orders on
the fund's behalf up to the applicable  cut-off time. The fund will be deemed to
have received such orders upon acceptance by the duly  authorized  intermediary,
and such  orders  will be priced at the fund's net asset  value next  determined
after acceptance on the fund's behalf by such intermediary.


Distributions

Federal tax laws require the fund to make  distributions  to its shareholders in
order  to  qualify  as a  "regulated  investment  company."  Qualification  as a
regulated investment company means that the fund will not be subject to state or
federal income tax in amounts distributed.  The distributions  generally consist
of dividends and interest  received,  as well as capital  gains  realized on the
sale of  investment  securities.  The fund pays  distributions  from net  income
monthly and generally pays  distributions  of capital gains, if any, once a year
in December. It may make more frequent distributions if necessary to comply with
Internal Revenue Code provisions.

You will begin to participate in fund  distributions the day after your purchase
is effective.  If you redeem shares, you will receive the distribution  declared
for  the day  you  redeem.  If you  redeem  all  shares,  we  will  include  the
distribution on the redeemed shares with your redemption proceeds.

Participants in employer-sponsored retirement or savings plans must reinvest all
distributions.  For shareholders  investing  through taxable  accounts,  we will
reinvest  distributions unless you elect to receive them in cash. Please consult
our Investor Services Guide for further information regarding  distributions and
your distribution options.

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The net asset value of a fund is the price of the fund's shares.

Capital gains is the increase in value of a capital asset,  such as stock,  from
the time it is  purchased.  Tax becomes  due on capital  gains once the asset is
sold.

**********END LEFT MARGIN CALLOUTS






Taxes

The tax consequences of owning shares of the fund will vary depending on whether
you own them through a taxable or tax-deferred  account. Tax consequences result
from  distributions  by the fund of dividend and interest income it has received
and capital gains it has generated  through its  investment  activities,  and by
sales of fund shares by  investors  after the net asset value has  increased  or
decreased.

Tax-Deferred Accounts

If you purchase fund shares through a tax-deferred  account, such as an IRA or a
qualified  employer-sponsored  retirement  or savings  plan,  income and capital
gains  distributions  usually will not be subject to current taxation,  but will
accumulate in your account  under the plan on a  tax-deferred  basis.  Likewise,
moving  from one fund to  another  fund  within a plan or  tax-deferred  account
generally  will  not  cause  you to be  taxed.  For  information  about  the tax
consequences of making  purchases or withdrawals  through an employer  sponsored
retirement  or  savings  plan,  or  through  an IRA,  please  consult  your plan
administrator, your summary plan description or a professional tax advisor.

Taxable Accounts

If you own fund shares through a taxable account,  distributions by the fund and
sales by you of fund shares may cause you to be taxed.

Taxability of Distributions

Fund distributions may consist of income earned by the fund from sources such as
dividends  and  interest,  or  capital  gains  generated  from  the sale of fund
investments.  Distributions of income are taxed as ordinary income. Distribution
of capital gains are classified  either as short-term or long-term and are taxed
as follows:


Type of Distribution       Tax rate for 15% Bracket     Tax rate for 28% Bracket
                                                                or above
- ------------------------- ---------------------------- -------------------------
Short-term capital gains     Ordinary income rate         Ordinary income rate
Long-term capital gains               10%                          20%

The tax status of any  distribution  of capital  gains is determined by how long
the fund held the  underlying  security that was sold,  not by how long you have
been  invested  in the  fund or  whether  you  reinvest  your  distributions  in
additional  shares or take them as income.  American Century will detail the tax
status of fund  distributions  for each calendar year in an annual tax statement
from the fund.

Distributions  also may be subject to state and local taxes.  Because everyone's
tax situation is unique,  always  consult your tax  professional  about federal,
state and local tax consequences.

Taxes on Transactions

Your  redemptions -- including  exchanges to other American Century funds -- are
subject to capital  gains tax.  The table above can provide a general  guide for
your potential tax liability when selling or exchanging fund shares. "Short-term
capital  gains" are gains on fund shares held for 12 months or less.  "Long-term
capital  gains" are gains on fund shares  held for more than 12 months.  If your
shares  decrease in value,  their sale or exchange will result in a long-term or
short-term capital loss.

**********LEFT MARGIN CALLOUTS

*    Buying a Dividend

     Purchasing  fund shares in a taxable  account shortly before a distribution
     is sometimes  known as "buying a dividend." In taxable  accounts,  you must
     pay income taxes on the  distribution  whether you take the distribution in
     cash or  reinvest  it.  In  addition,  you  will  have to pay  taxes on the
     distribution whether the value of your investment  decreased,  increased or
     remained  the same after you bought the fund  shares.  The risk in buying a
     dividend is that a fund's  portfolio may build up taxable gains  throughout
     the period covered by a  distribution,  as securities are sold at a profit.
     We distribute those gains to you, after subtracting any losses, even if you
     did not own the shares when the gains occurred. Thus if you buy a dividend,
     you incur the full tax liability of the  distribution  period,  but you may
     not enjoy the full benefit of the gains realized in the fund's portfolio.

**********END LEFT MARGIN CALLOUTS








Multiple Class Information

American   Century   offers  three  classes  of  the  funds:   Investor   Class,
Institutional Class and Advisor Class. The shares offered by this Prospectus are
Advisor  Class  shares and are offered  primarily  to  institutional  investors,
through  institutional   distribution   channels,   such  as  employer-sponsored
retirement plans, or through banks, broker-dealers and insurance companies.

American Century offers another class of shares that has no up-front or deferred
charges,  commissions  or 12b-1 fees.  The funds may offer a different  class of
shares primarily to institutional investors,  through institutional distribution
channels,  such  as  employer-sponsored  retirement  plans,  or  through  banks,
broker-dealers and insurance  companies.  The other classes have different fees,
expenses,  and/or minimum  investment  requirements  than the Advisor Class. The
difference  in the fee  structures  among  the  classes  is the  result of their
separate  arrangements  for  shareholder and  distribution  services and not the
result of any difference in amounts  charged by the advisor for core  investment
advisory  services.  Accordingly,  the core investment  advisory expenses do not
vary by  class.  Different  fees  and  expenses  will  affect  performance.  For
additional  information  concerning  the other  classes of shares not offered by
this Prospectus,  call us at 1-800-345-3533 or contact a sales representative or
financial intermediary who offers those classes of shares.

Except as  described  below,  all  classes  of  shares of a fund have  identical
voting,  dividend,   liquidation  and  other  rights,  preferences,   terms  and
conditions.  The only  differences  among the various classes are (a) each class
may be subject to different  expenses specific to that class, (b) each class has
a different identifying designation or name, (c) each class has exclusive voting
rights with respect to matters solely  affecting such class,  (d) each class may
have different exchange privileges,  and (e) the Institutional Class may provide
for automatic  conversion  from that class into shares of the Investor  Class of
the same fund.


Service and Distribution Fees
Investment Company Act Rule 12b-1 permits mutual funds that adopt a written plan
to pay out of fund assets certain  expenses  associated with the distribution of
their shares. The fund's Advisor Class shares have a 12b-1 Plan. Under the Plan,
the  fund  pays  an  annual  fee of  0.50%  of fund  assets,  half  for  certain
shareholder and administrative  services and half for distribution services. The
advisor, as paying agent for the fund, pays all or a portion of such fees to the
banks,  broker-dealers and insurance  companies that make such shares available.
Because these fees are paid out of the fund's assets on an on-going basis,  over
time these fees will increase the cost of your  investment and may cost you more
than paying other types of sales charges.  For additional  information about the
Plan and its terms,  see "Multiple  Class  Structure - Master  Distribution  and
Shareholder Services Plan" in the Statement of Additional Information.







Performance Information of the Other Class
The  Advisor  Class of the fund  was  established  in  1997.  As a  result,  the
following  financial  information  is  provided to show the  performance  of the
fund's original class of shares.  This class,  the Investor  Class,  has a total
expense ratio that is 0.25% lower than the Advisor  Class.  If the Advisor Class
existed  during the periods  presented,  its  performance  would have been lower
because of the additional expense.

This table  itemizes what  contributed  to the changes in share price during the
period,  and compares  this to changes over the last five fiscal years (or less,
if the share class is not five years old).

On a per-share basis, it includes:

o        share price at the beginning of the period
o        investment income and capital gains or losses
o        distributions of income and capital gains paid to shareholders
o        share price at the end of the period

It also includes some key statistics for the period:

o    total return--the  overall  percentage of return of the fund,  assuming the
     reinvestment of all distributions
o    expense ratio--operating expenses as a percentage of average net assets
o    net income  ratio--net  investment  income as a  percentage  of average net
     assets
o    portfolio  turnover--the  percentage  of  the  fund's  buying  and  selling
     activity

The  following  Financial  Highlights  have been  audited by  Deloitte & Touche,
independent  auditors.  Their report is in the fund's  annual  report,  which is
incorporated by reference into the Statement of Additional  Information,  and is
available upon request.





High-Yield

PER SHARE DATA                                          1998          1997
Net Asset Value, Beginning of Year
                                                    ------------- --------------
Income from Investment Operations
   Net Investment Income (dividends)
   Net Realized and Unrealized Gain (Loss) on
   Investment Transactions
                                                    ------------- --------------
   Total From Investment Operations
                                                    ------------- --------------
Less Distributions
   From Net Investment Income (dividends)
   In Excess of Net Realized Gains
                                                    ------------- --------------
                                                    ------------- --------------
   Total Distributions
                                                    ------------- --------------
Net Asset Value, End of Year
                                                    ------------- --------------
Total Return(1)
RATIOS/SUPPLEMENTAL DATA
Ratio of Operating Expenses to Average Net Assets
Ratio of Net Investment Income to Average Net Assets
Portfolio Turnover Rate
Net Assets, End of Year (in thousands)

(1)  Total return assumes reinvestment of dividends and capital gains, if any.










More information about the funds is contained in these documents:

Annual and Semiannual Reports.  These reports contain more information about the
fund's  investments  and the market  conditions and investment  strategies  that
significantly  affected the fund's  performance during the most recent six-month
fiscal period.

Statement of Additional  Information.  The SAI contains a more  detailed,  legal
description  of the funds'  operations,  investment  restrictions,  policies and
practices. The SAI is incorporated by reference into this Prospectus. This means
that it is legally part of this Prospectus, even if you don't request a copy.

You also can get information about the funds (including the SAI) from the SEC.

v    In person.            SEC Public Reference Room
                           Washington, D.C.
                           Call 1-800-SEC-0330 for location and hours.
v    On the internet.      www.sec.gov.
v    By mail.              Public Reference Section
                           Washington, D.C.
                           20549-6009
                           The SEC will charge a fee for  copying the  documents
                           you request.


American Century Investments
P.O. Box 419385
Kansas City, Missouri 64141-6385

Institutional Services
1-800-345-3533 or 816-531-5575

Automated Information Line
1-800-345-8765

Fax
816-340-4655

www.americancentury.com

Telecommunications Device for the Deaf
1-800-345-1833 or 816-444-3038

Corporate, Not-for-Profit, Keogh,
SEP-, SARSEP-, SIMPLE-IRA and 403(b) Services
1-800-345-3533

Investment Company Act File No. 811-0816
<PAGE>
[american century logo(reg.sm)]
American
Century


Prospectus


January 29, 1999
- --------------------------------------------------------------------------------

AMERICAN CENTURY

Growth
Ultra
Select
Vista
Heritage

Institutional Class

The  Securities and Exchange  Commission  has not approved or disapproved  these
securities or determined if this Prospectus is accurate or complete.  Anyone who
tells you otherwise is committing a crime.

Distributed by Funds Distributor, Inc.






Reading a prospectus doesn't have to be a chore. We've done the hard work so you
can focus on what's  important--learning about the funds. Take a look inside and
you'll see this  prospectus  is  different  from  others.  It takes a  clear-cut
approach to fund information.


Here's what you'll find:

o    The fund's primary investments and risks

o    A description of who may or may not want to invest in the fund

o    Fund performance,  including returns for each year, best and worst quarters
     and average annual returns compared to the fund's benchmarks

o    An overview of ways to best manage your accounts

o    Helpful tips and definitions of key investment terms

Whether  you're a current  investor or  investing  in mutual funds for the first
time, this prospectus will give you a clear  understanding  of the funds. If you
have questions,  our Investor Services Representatives are available weekdays, 7
a.m. to 7 p.m.  Central time. Our toll-free  number is  1-800-345-2021.  We look
forward to helping you achieve your financial goals.

                                  Sincerely,


                                  Mark Killen
                                  Senior Vice President
                                  American Century Investment Services, Inc.








Table of Contents

An Overview of the Funds..................................2

Fees and Expenses.........................................3

Detailed Information about the Funds......................4

         Growth
         Ultra
         Select
         Vista
         Heritage

Management................................................7

Investing with American Century..........................XX

Share Price and Distributions............................XX

Taxes....................................................XX

Multiple Class Information...............................XX

Financial Highlights.....................................XX

Performance Information of Other Class...................XX

Fund Reference
                     Fund Code        Ticker
- ----------------------------------------------------
Growth               020              TWGIX
Ultra                022              TWUIX
Select               021              TWSIX
Vista                024              TWVIX
Heritage             030              ATHIX
- ----------------------------------------------------

**********LEFT MARGIN CALLOUTS

Throughout  this  book  you'll  find  definitions  of key  investment  terms and
phrases.  When you see a word printed in green italics,  look for its definition
in the left margin.

*........This symbol highlights special information and helpful tips.

**********END LEFT MARGIN CALLOUTS








An Overview of the Funds

What are the funds' investment goals?

These funds seek long-term capital growth.

What are the funds' primary investment strategies and principal risks?

The funds look for common stocks of growing companies. The basis of the strategy
used by these  funds is that,  over the long  term,  stocks  of  companies  with
earnings and revenue  growth have a greater  than average  chance to increase in
value over time. A more  detailed  description  of American  Century's  "growth"
investment style begins on page xx.

The funds' principal risks include:

o Market Risk       The value of a fund's  shares  will go up and down  based on
                    the  performance of the companies  whose  securities it owns
                    and other factors affecting the securities market generally.


o Price Volatility  The value of the funds' shares may  fluctuate  significantly
                    in the short term.

o Principal Loss    As with all mutual funds, if you sell your shares when their
                    value is less than the price you paid, you will lose money.

Who may want to invest in the funds?

The funds may be a good investment if you are

0    seeking long-term capital growth from your investment

0    comfortable with the funds' short-term price volatility

0    comfortable with the risks associated with the funds' investment strategy

0    investing through an IRA or other tax-advantaged retirement plan

Who may not want to invest in the funds?

The funds may not be a good investment if you are

0    seeking current income from your investment

0    investing for a short period of time

0    uncomfortable with short-term volatility in the value of your investment

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*    An  investment  in the funds is not a bank  deposit  and is not  insured or
     guaranteed  by the  Federal  Deposit  Insurance  Corporation  or any  other
     government agency.

**********END LEFT MARGIN CALLOUTS







Fees and Expenses

There are no sales loads or fees or other charges

0    to buy fund shares directly from American Century

0    to reinvest dividends in additional shares

0    to exchange into the  Institutional  Class shares of other American Century
     funds.

The following  tables describe the fees and expenses that you may pay if you buy
and hold shares of the funds.

<TABLE>
Annual Operating Expenses (expenses that are deducted from fund assets)

                Management Fee     Distribution and          Other Expenses1    Total Annual Fund
                                   Service (12b-1) Fees                         Operating Expenses
<S>             <C>                                          <C>                <C>  
Growth          0.80%              None                      0.00%              0.80%
Ultra           0.80%              None                      0.00%              0.80%
Select          0.80%              None                      0.00%              0.80%
Vista           0.80%              None                      0.00%              0.80%
Heritage        0.80%              None                      0.00%              0.80%
</TABLE>

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

Example of Hypothetical Fund Costs

The  examples in the table  below are  intended to help you compare the costs of
investing in a fund with those of other mutual funds. Assuming you ...

o        invest $10,000 in the fund

o        redeem all of your shares at the end of the periods shown below

o        earn a 5% return each year and

o        incur the same operating expenses shown above

 ... your cost of investing in the fund would be:

             1 Year        3 Years      5 Years      10 Years
Growth       $82           $255         $443         $987
Ultra        $82           $255         $443         $987
Select       $82           $255         $443         $987
Vista        $82           $255         $443         $987
Heritage     $82           $255         $443         $987

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

**********END LEFT MARGIN CALLOUTS





Detailed Information about the Funds

Growth
Ultra
Select
Vista
Heritage

What are the funds' investment objectives?

These funds seek  long-term  capital  growth.  This is a fundamental  policy and
cannot be changed without shareholder approval.

How do the funds pursue their investment objectives?

The fund managers  look for stocks of companies  that they believe will increase
in value over time,  using a growth  investment  strategy  developed by American
Century.  This strategy  looks for companies with earnings and revenues that are
not only growing, but growing at a successively  faster, or accelerating,  pace.
This  strategy is based on the premise that,  over the long term,  the stocks of
companies with  accelerating  earnings and revenues have a  greater-than-average
chance to increase in value.

The  managers  use a bottom-up  approach to select  stocks to buy for the funds.
That means they first look for strong,  growing  companies to invest in,  rather
than simply buying any company in a growing  industry or sector.  Using American
Century's extensive computer database,  the managers track financial information
for  thousands of companies to identify  trends in the  companies'  earnings and
revenues. This information is used to help the fund managers select or decide to
continue to hold the stocks of  companies  they  believe will be able to sustain
accelerating growth, and to sell stocks of companies whose growth begins to slow
down.

Although most of the funds' assets will be invested in U.S. companies,  there is
no limit on the amount of assets the funds can invest in foreign companies. Most
of the funds' foreign investments are in companies located and doing business in
developed countries. Investments in foreign securities present some unique risks
that are more fully described in the funds' Statement of Additional Information.

**********LEFT MARGIN CALLOUT

*    Accelerating  growth is shown,  for example,  by growth that is faster this
     quarter than last or faster this year than the year before.

**********END LEFT MARGIN CALLOUT

The fund  managers do not attempt to time the  market.  Instead,  they intend to
keep the funds  essentially  fully invested in stocks regardless of the movement
of stock prices  generally.  When the managers  believe that it is prudent,  the
funds may invest a portion of their assets in  convertible  securities,  foreign
securities, short-term instruments,  non-leveraged stock index futures contracts
and  other  similar  securities.  Stock  index  futures  contracts,  a  type  of
derivative  security,  can help the  funds'  cash  assets  remain  liquid  while
performing  more like  stocks.  The funds have a policy  governing  stock  index
futures and similar derivative securities to help manage the risk of these types
of investments.  For example,  the managers cannot leverage the funds' assets by
investing in a derivative  security.  A complete  description of the derivatives
policy is included in the Statement of Additional Information.

Additional information about the funds' investments is available in their annual
and  semiannual  reports.  In these  reports you will find a  discussion  of the
market  conditions and investment  strategies  that  significantly  affected the
funds'  performance  during the most recent six-month period.  You may get these
reports at no cost by calling us.


What kinds of securities do the funds buy?

The funds will usually purchase common stocks of U.S. and foreign companies, but
they can  purchase  other types of  securities,  as well,  such as domestic  and
foreign preferred stocks, convertible securities,  equity equivalent securities,
notes,  bonds and other debt securities.  The funds limit their purchase of debt
securities to investment-grade obligations.

What is the difference between the funds?

0    Growth,  Ultra and Select  generally invest in larger  companies,  although
     they may purchase companies of any size.  Companies  considered to be large
     generally have a market capitalization in excess of $5 billion.
0    Vista and Heritage  generally invest in medium-sized and smaller companies,
     although they may purchase companies of any size.  Companies  considered to
     be medium sized generally have a market  capitalization  between $1 billion
     and  $5  billion,   and   smaller   companies   generally   have  a  market
     capitalization below $1 billion.
0    Eighty  percent  (80%) of  Select's  and 60% of  Heritage's  assets must be
     invested in securities  of companies  that pay regular  dividends,  or have
     committed to pay dividends,  or otherwise produce income. This reflects the
     funds'  strategy to invest most of their assets in stocks of companies that
     are successful enough to pay dividends.  The amount of dividends may not be
     significant,  however, since stocks are not picked based upon the amount of
     income they  produce.  The  remaining 20% of Select's and 40% of Heritage's
     assets may be invested in any other  permissible  securities  that the fund
     managers believe will help the funds achieve their objectives.

**********LEFT MARGIN CALLOUT

     Market  capitalization  means  the value of a  company,  as  determined  by
multiplying the number of shares of its stock  outstanding by its current market
price per share.

**********END LEFT MARGIN CALLOUT

What are the primary risks of investing in the funds?

o    The value of a fund's  shares  depends on the value of the stocks and other
     securities it owns. The value of the individual securities a fund owns will
     go up and down  depending on the  performance  of the companies that issued
     them, general market and economic conditions, and investor confidence.
o    The fund managers may buy a large amount of a company's stock quickly,  and
     often will  dispose of it quickly if the  company's  earnings  or  revenues
     decline.  While the managers  believe this  strategy  provides  substantial
     appreciation  potential over the long term, in the short term it can create
     a significant  amount of share price  volatility.  This  volatility  can be
     greater than that of the average stock fund.
o    As with all funds, at any given time, the value of your shares 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.
o    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 funds' style,  the funds' gains may not be as big as, or their
     losses may be bigger than,  other equity funds using  different  investment
     styles.
o    Foreign securities can have certain unique risks, including fluctuations in
     currency  exchange  rates,  unstable  political  and  economic  structures,
     reduced  availability of public  information and lack of uniform  financial
     reporting  and  regulatory  practices  similar  to those that apply to U.S.
     issuers.  These  factors  make  investing in foreign  securities  generally
     riskier than  investing in U.S.  stocks.  To the extent the fund invests in
     foreign securities, the overall risk of the fund could be affected.

These funds are intended for investors who seek long-term capital growth through
an  aggressive  equity fund and who are  willing to accept the risks  associated
with the funds' investment strategies.






Fund Performance History

The  performance  information  on this page is designed to help you see how fund
returns can vary.  Keep in mind that past  performance  does not predict how the
funds will perform in the future.

Annual Total Returns

The following bar chart shows the performance of the funds'  Institutional Class
shares for each full year in the life of the class.  It indicates the volatility
of the historical returns from year to year.

[GRAPH DEPICTING 10 YEAR ANNUAL TOTAL RETURNS FOR GROWTH,  ULTRA,  SELECT, VISTA
AND HERITAGE SINCE INCEPTION; UPDATED FIGURES NOT AVAILABLE]

Highest and Lowest Quarterly Returns
The highest and lowest  returns of the funds'  Institutional  Class shares for a
calendar quarter during the life of the class are provided below to indicate the
historical  short-term  volatility.  Shareholders should be aware, however, that
these funds are intended for investors with a long-term  investment  horizon and
are not managed for short-term results.

[GRAPH DEPICTING HIGHEST AND LOWEST RETURNS FOR GROWTH, ULTRA, SELECT, VISTA AND
HERITAGE SINCE INCEPTION; UPDATED FIGURES NOT AVAILABLE]

Average Annual Returns

The following table shows the average annual returns of the funds' Institutional
Class  shares  for the  periods  indicated  during  the life of the  class.  The
benchmarks are included for long-term performance comparison. The benchmarks are
unmanaged indices that have no operating costs.

                                1 year       Life of fund1
- --------------------------------------------------------------
Growth                          XXX%         XXX%
Russell 1000 Growth Index       XXX%         XXX%
- --------------------------------------------------------------
Ultra                           XXX%         XXX%
S&P 500 Index                   XXX%         XXX%
- --------------------------------------------------------------
Select                          XXX%         XXX%
S&P 500 Index                   XXX%         XXX%
- --------------------------------------------------------------
Vista                           XXX%         XXX%
Russell 2500 Growth Index       XXX%         XXX%
- --------------------------------------------------------------
Heritage                        XXX%         XXX%
S&P Mid Cap 400 Index           XXX%         XXX%
- --------------------------------------------------------------

1        The inception dates for the Institutional Class of the funds are Growth
         and  Heritage,  June 16, 1997;  Select,  March 13, 1997;  and Ultra and
         Vista, November 14, 1996.

**********LEFT MARGIN CALLOUTS

The funds' total  returns for the period from January 1, 1998,  to September 30,
1998, are:

Growth                 XXX%
Ultra                  XXX%
Select                 XXX%
Vista                  XXX%
Heritage               XXX%

*    For current  performance  information,  please call us at 1-800-345-2021 or
     visit American Century's Web site at www.americancentury.com.

**********END LEFT MARGIN CALLOUTS


Performance Information of Other Class
The original class of shares of the fund was the Investor  Class of shares.  The
Institutional  Class was not established  until 1996. For information  about the
historical performance of the original class of shares, see page xx.






Management

Who manages the funds?

The Board of Directors,  investment  advisor and fund  management  team play key
roles in the management of the funds.

The Board of Directors

The Board of Directors  oversees the  management of the funds and meets at least
quarterly  to  review  reports  about  fund  operations.  Although  the Board of
Directors  does not manage the funds,  it has hired an investment  advisor to do
so. More than half of the Directors are independent of the funds' advisor,  that
is, they are not employed by and have no financial interest in the advisor.

The Investment Advisor

The funds' investment  advisor is American Century Investment  Management,  Inc.
The advisor has been  managing  mutual  funds  since 1958.  American  Century is
headquartered at 4500 Main Street, Kansas City, Missouri 64111.

The advisor is responsible  for managing the investment  portfolios of the funds
and directing the purchase and sale of their investment securities.  The advisor
also arranges for transfer agency,  custody and all other services necessary for
the funds to operate.

For the services it provided to the funds during their most recent  fiscal year,
the advisor received a unified management fee of 0.80% of the average net assets
of the  Institutional  Class of shares of the fund. The amount of the management
fee is calculated on a class-by-class  basis daily and paid monthly. Out of that
fee, the advisor paid all  expenses of managing  and  operating  the fund except
brokerage  expenses,  taxes,  interest,  fees and  expenses  of the  independent
Directors (including legal counsel fees) and extraordinary expenses.






The Fund Management Teams

The advisor uses teams of portfolio  managers,  assistant portfolio managers and
analysts to manage the funds.  Teams meet regularly to review portfolio holdings
and to discuss purchase and sale activity.  Team members buy and sell securities
for a fund as they  see fit,  guided  by the  fund's  investment  objective  and
strategy.

Portfolio Manager members of the investment teams are identified below:

Growth
C. Kim Goodwin
Ms. Goodwin, Vice President and Portfolio Manager, has been a member of the team
that manages  Growth since  joining  American  Century in October  1997.  Before
joining  American  Century,  she served as Senior Vice  President  and Portfolio
Manager at Putnam Investments from May 1996 to September 1997 and Vice President
and  Portfolio  Manager at  Prudential  Investments  from February 1993 to April
1996. She has a bachelor of arts from Princeton University and an MBA in finance
from the University of Texas.

Gregory J. Woodhams
Mr.  Woodhams,  Portfolio  Manager,  has been a member of the team that  manages
Growth  since he joined  American  Century in  September  1997 as an  Investment
Analyst.  Mr. Woodhams was promoted to Portfolio  Manager for the Growth team in
May 1998.  Before  joining  American  Century,  he served as Vice  President and
Director of Equity  Research for Texas  Commerce  Bank,  a  subsidiary  of Chase
Manhattan Bank. He has a bachelor's degree in economics from Rice University and
an  MBA in  economics  from  the  University  of  Wisconsin.  He is a  Chartered
Financial Analyst.

Ultra
James E. Stowers III
Mr. Stowers,  Chief  Executive  Officer and Portfolio  Manager,  joined American
Century  as  a   portfolio   manager  of  Ultra  and  other   American   Century
growth-oriented  funds in 1981.  He has a  bachelor's  degree  in  finance  from
Arizona State University.

John R. Sykora
Mr. Sykora, Vice President and Portfolio Manager,  has been a member of the team
that manages Ultra since August 1997. He joined American  Century in May 1994 as
an Investment Analyst. Before joining American Century, he served as a Financial
Analyst for Business Men's Assurance Company of America,  Kansas City,  Missouri
from August 1993 to April 1994. He has a bachelor's degree in accounting finance
and an  MBA  in  finance  from  Michigan  State  University.  He is a  Chartered
Financial Analyst.

Bruce A. Wimberly
Mr.  Wimberly,  Vice President and Portfolio  Manager,  has been a member of the
team that manages Ultra since July 1996. He joined American Century in September
1994 as an Investment  Analyst.  Before joining  American  Century,  he attended
Kellogg Graduate School of Management,  Northwestern University from August 1992
to August  1994,  where he  obtained  his MBA.  He has a  bachelor  of arts from
Middlebury  College  and an MBA in  finance  from  Kellogg  Graduate  School  of
Management.

Select
Jean C. Ledford
Ms. Ledford, Vice President and Portfolio Manager, has been a member of the team
that manages  Select since joining  American  Century in January 1997.  Prior to
joining American Century, she worked for the State of Wisconsin Investment Board
as an  Investment  Director  from 1994 to 1996,  and as an Assistant  Investment
Director  from 1983 to 1994.  She has a  bachelor  of arts and an MBA in finance
from the University of Wisconsin. She is a Chartered Financial Analyst.

Richard S. Welsh
Mr. Welsh,  Portfolio Manager, has been a member of the team that manages Select
since May 1998. He joined American  Century in August 1994 as an Equity Research
Analyst and was promoted to Investment Analyst in January 1997. Prior to joining
American  Century,  he served  as Equity  Research  Analyst  for Brown  Brothers
Harriman  &  Company.  He has a  bachelor's  degree  in  economics  from  Boston
University and an MBA in finance and accounting from New York University.

Vista
Arnold K. Douville
Mr.  Douville,  Vice President and Portfolio  Manager,  has been a member of the
team that manages Vista since joining American Century in November 1997.  Before
joining  American  Century,  he served as Senior  Portfolio  Manager  for Munder
Capital  Management  from  September  1989 to October  1997. He has a bachelor's
degree in  economics  from the U.S.  Air Force  Academy  and an MBA in  finance,
statistics and economics from the University of Chicago.

Glenn A. Fogle
Mr. Fogle, Vice President and Portfolio  Manager,  has been a member of the team
that manages  Vista since March 1993.  He joined  American  Century in September
1990 as an Investment  Analyst.  He has a bachelor of arts and an MBA in finance
from Texas Christian University. He is a Chartered Financial Analyst.

Heritage
Harold S. Bradley
Mr. Bradley, Vice President and Portfolio Manager, has been a member of the team
that manages  Heritage since March 1998. He joined American  Century in 1988 and
for the past 10 years,  has  managed  the global  equity,  futures  and  foreign
exchange trading activities for American Century. He has a bachelor of arts from
Marquette University.

Linda K. Peterson
Ms.  Peterson,  Portfolio  Manager,  has been a member of the team that  manages
Heritage since March 1998. She joined American Century in 1986. She served as an
Investment  Analyst  for  American  Century's   growth-oriented   equity  funds,
including  Heritage,  from April 1994 until  February 1998. She has a bachelor's
degree in  finance  from the  University  of  Northern  Iowa and an MBA from the
University of Missouri-Kansas City. She is a Chartered Financial Analyst.

**********LEFT MARGIN CALLOUTS

*    Code of Ethics

     American Century has a Code of Ethics designed to ensure that the interests
     of fund shareholders come before the interests of the people who manage the
     funds.  Among  other  provisions,  the Code of Ethics  prohibits  portfolio
     managers  and other  investment  personnel  from  buying  securities  in an
     initial public offering or from profiting from the purchase and sale of the
     same  security  within 60 calendar  days.  In addition,  the Code of Ethics
     requires  portfolio managers and other employees with access to information
     about the purchase or sale of  securities  by the funds to obtain  approval
     before executing permitted personal trades.

**********END LEFT MARGIN CALLOUTS






Fundamental Investment Policies

Fundamental  investment  policies  contained  in  the  Statement  of  Additional
Information  and the  investment  objectives  of the  funds  may not be  changed
without a shareholder vote. The Board of Directors may change any other policies
and investment strategies.

Year 2000 Issues

Many of the world's  computer  systems  currently  cannot properly  recognize or
process date-sensitive information relating to the Year 2000 and beyond. Because
this may impact the computer systems of various American  Century-affiliated and
external service providers for the funds,  American Century formally initiated a
Year 2000  readiness  project in July 1997.  It  involves a team of  information
technology  professionals  assisted  by  outside  consultants  and  guided  by a
senior-level steering committee.  The team's goal is to assess the impact of the
Year 2000 on  American  Century's  systems,  renovate  or  replace  noncompliant
critical systems and test those systems. In addition,  the team has been working
to gather  information  about the Year 2000  efforts of the funds'  other  major
service providers.  Although American Century believes its critical systems will
function  properly in the Year 2000, this is not  guaranteed.  If the efforts of
American  Century or its external  service  providers  are not  successful,  the
funds'  business,  particularly  the provision of shareholder  services,  may be
hampered.

In  addition,  the  issuers  of  securities  the funds own could  have Year 2000
computer  problems.  These problems could  negatively  affect the value of their
securities, which, in turn, could impact the funds' performance. The advisor has
established a process to gather publicly  available  information  about the Year
2000  readiness  of these  issuers.  However,  this  process may not uncover all
relevant  information,  and the  information  gathered  may not be complete  and
accurate.  Moreover, an issuer's Year 2000 readiness is only one of many factors
the fund  managers  may consider  when making  investment  decisions,  and other
factors may receive greater weight.






Investing With American Century

Eligibility for Institutional Class Shares

The  Institutional  Class  shares  are  made  available  for  purchase  by large
institutional  shareholders,  such  as  bank  trust  departments,  corporations,
retirement plans,  endowments,  foundations and financial advisors that meet the
fund's  minimum  investment  requirements.  Institutional  Class  shares are not
available for purchase by insurance  companies for variable annuity and variable
life products.

Minimum Initial Investment Amounts

The minimum investment is $5 million ($3 million for endowments and foundations)
per fund.  If you invest with us through a financial  intermediary,  the minimum
investment  requirement  may be met by  aggregating  the  investments of various
clients of your financial  intermediary.  The minimum investment requirement may
be waived if you or your financial intermediary, if applicable, has an aggregate
investment  in our  family  of funds of $10  million  or more  ($5  million  for
endowments  and  foundations).  Retirement  plans may also be  required  to meet
certain other  requirements,  such as plan size or a minimum level of assets per
participant, in order to be eligible to purchase Institutional Class shares.

Redemption of shares in below-minimum accounts

If your balance or the balance of your  financial  intermediary,  if applicable,
falls below the minimum investment requirements due to redemptions or exchanges,
we reserve the right to convert your shares to Investor Class shares of the same
fund.  The  Investor  Class shares have a unified  management  fee that is 0.20%
higher than the Institutional Class.

Services Automatically Available to You

You  automatically  will have access to the services  listed below when you open
your account.  If you do not want these services,  see  "Conducting  Business in
Writing" below.

Conducting Business in Writing

If you prefer to conduct  business in writing only, you can indicate this on the
account  application.  If you choose to do  business in writing  only,  you must
provide written instructions to invest,  exchange and redeem. All account owners
must sign transaction  instructions (with signatures  guaranteed for redemptions
in excess of $100,000).  If you want to add services later,  you can complete an
Investor Service Options form.

<TABLE>
Ways to Manage Your Account
- -------------------------------------------------------------------------------------------------------------------------------
- ---------------------------------- ---------------------------------------------- -----------------------------------------------
<S>                             <C>                                               <C>
By telephone                       Open an account                                Make additional investments  
Institutional Services             If you are a current investor,  you            Call us if you have authorized us to invest
1-800-345-3533                     can open an account by exchanging              from your bank account.
7 a.m. to 7 p.m. Central time      shares from another American Century
                                   account. (This service is not                  Sell shares
                                   available if you have chosen to do             Call an Institutional Service Representative.
                                   business in writing only.)

                                   Exchange shares
                                   Call us if you have  authorized  us to accept
                                   telephone instructions.
- ---------------------------------- ---------------------------------------------- -----------------------------------------------
- ---------------------------------- ---------------------------------------------- -----------------------------------------------
By mail or fax                     Open an account                                Make additional investments 
PO Box 419385                      Send a signed and  completed                   Send us your check or money order for at 
Kansas City, MO 64141-6385         application  and check or money order          least $50 with an  investment slip or $250
                                   payable to American Century                    without an investment slip. If you don't have
Fax 816-340-4655                   Investments.                                   an investment slip, include your name,
                                                                                  address and account number on your check or
                                   Exchange shares                                money order.
                                   Send us written instructions to
                                   exchange your shares from one                  Sell shares
                                   American Century account to another.           Send us written instructions to sell shares or
                                                                                  send us a redemption form. Call an Institutional
                                                                                  Service Representative to request a form.






A Note About Mailings to Shareholders

To reduce expenses and demonstrate respect for our environment,  we will deliver
most financial  reports,  prospectuses and account statements to households in a
single  envelope,  even if the accounts are registered under different names. If
you would like  additional  copies of  financial  reports  and  prospectuses  or
separate mailing of account statements, please call us.

Your Guide to Services and Policies

When you open an account,  you will receive an Investor  Services  Guide,  which
explains  the  services  available  to you and the  policies of the fund and the
transfer agent.

- -------------------------------- ------------------------------------------------ -----------------------------------------------
By wire                          Open an account                                  Make additional investments
                                 Call us to set up your account or mail           Follow the wire instructions provided in the
                                 a completed application to the address           "Open an account" section
                                 provided in the "By Mail" section and
                                 give your bank:                                  Sell shares
                                 o        Our bank information:                   You can receive redemption proceeds by
                                    -       Commerce Bank N.A.                    wire  or electronic transfer.  (This
                                    -       Routing No. 101000019                 service is not available if you have
                                    -       ACMF Account No. 2804918              chosen to do business in writing only.)
                                 o        The fund name
                                 o        Your American Century account number
                                 o        Your name
                                 o        The contribution year (for IRAs only)
                                                                                  Exchange shares
                                                                                  Not available.
- -------------------------------- ------------------------------------------------ -----------------------------------------------
Automatically                    Open an account                                  Make additional investments
                                 Not available.                                   Select "Establish Automatic Investments" on
                                                                                  your application to make automatic purchases
                                 Sell shares                                      of shares on a regular basis. You must invest
                                 If you have at least $10,000 in your             at least $600 per year per account.
                                 account, sell shares automatically by
                                 establishing Check-A-Month or                    Exchange shares
                                 Automatic Redemption.                            Send us written instructions to set up an
                                                                                  automatic exchange of your shares from one
                                                                                  American Century account to another.
</TABLE>







Special requirements for large redemptions

The funds have elected to be governed by Rule 18f-1 under the Investment Company
Act,  which  obligates  each  fund to make  certain  redemptions  in cash.  This
requirement applies when a shareholder redeems,  during any 90-day period, up to
the lesser of  $250,000  or 1% of the assets of the fund.  Although  we normally
will pay  redemptions  in excess of this  limitation in cash,  American  Century
reserves the right under unusual  circumstances  to honor these  redemptions  in
kind by making payment in whole or in part in readily marketable securities.

If we make payment in securities, we will value the securities,  selected by the
fund,  in the same manner as we do in computing  the fund's net asset value.  We
will provide these  securities to the redeeming  plan  participant  or financial
intermediary  in lieu of cash without prior  notice.  If your  redemption  would
exceed this limit and you would like to avoid being paid in  securities,  please
provide us with an unconditional instruction to redeem at least 15 days prior to
the date on which the redemption  transaction is to occur.  The instruction must
specify the dollar amount or number of shares to be redeemed and the date of the
transaction.  This  minimizes  the effect of the  redemption on the fund and its
remaining shareholders.

While  each  fund   reserves   the  right  to  redeem  fund  shares   through  a
redemption-in-kind,  we do not expect to exercise  this option unless a fund has
an  unusually  low  level of cash to meet  redemptions  and/or  is  experiencing
unusually  strong  demands  for its cash.  Such a demand  might be  caused,  for
example, by extreme market conditions that result in an abnormally high level of
redemption  requests  concentrated  in a short  period of time.  Absent these or
similar circumstances, we expect redemptions in excess of $250,000 to be paid in
cash in any fund with assets of more than $50 million if total  redemptions from
any one account in any 90-day  period do not exceed  one-half of 1% of the total
assets of the fund.

**********LEFT MARGIN CALLOUTS

*    Financial intermediaries include banks, broker-dealers, insurance companies
     and investment advisors.

**********END LEFT MARGIN CALLOUTS





Share Price and Distributions

Share Price

We determine the net asset value of the funds as of the close of regular trading
on the New York Stock  Exchange  (usually 4 p.m.  Eastern  time) on each day the
Exchange is open. On days when the Exchange is not open, we do not calculate the
net asset value. The net asset value of a fund share is the current value of its
investments,  minus  any  liabilities,  divided  by the  number  of fund  shares
outstanding.

If current prices of securities  owned by a fund are not readily  available from
an independent  pricing  service,  the advisor may determine their fair value in
accordance with procedures adopted by the fund's Board of Directors.  Trading of
securities  in foreign  markets may not take place on every day the  Exchange is
open.  Also,  trading in some  foreign  markets  may take place on  weekends  or
holidays  when a fund's net asset  value is not  calculated.  So, the value of a
fund's  portfolio  may be  affected  on days when you can't  purchase  or redeem
shares of the fund.

We will price your purchase,  exchange or redemption at the net asset value next
determined after we receive your transaction request in good order.

It is the responsibility of your plan recordkeeper or financial  intermediary to
transmit your purchase,  exchange and redemption  requests to the funds transfer
agent prior to the  applicable  cut-off  time for  receiving  orders and to make
payment for any purchase  transactions in accordance with the funds'  procedures
or any  contractual  arrangements  with the funds or the funds'  distributor  in
order for you to receive that day's price.

We have contractual relationships with certain financial intermediaries in which
such intermediaries  represent that they have systems to track the time at which
investment  orders are received and to  segregate  orders  received at different
times.  Based  on  these   representations,   the  funds  have  authorized  such
intermediaries  and their designees to accept purchase and redemption  orders on
the funds' behalf up to the applicable cut-off time. The funds will be deemed to
have received such orders upon acceptance by the duly  authorized  intermediary,
and such  orders  will be priced at the funds' net asset  value next  determined
after acceptance on the funds' behalf by such intermediary.

Distributions

Federal tax laws require each fund to make  distributions to its shareholders in
order  to  qualify  as a  "regulated  investment  company."  Qualification  as a
regulated  investment  company means that the funds will not be subject to state
or federal  income  tax on  amounts  distributed.  The  distributions  generally
consist of dividends and interest received, as well as capital gains realized on
the sale of investment  securities.  Each fund generally pays  distributions  of
capital  gains,  if any,  once a year in December.  They may make more  frequent
distributions if necessary to comply with Internal Revenue Code provisions.

Participants in employer-sponsored retirement or savings plans must reinvest all
distributions.  For shareholders  investing  through taxable  accounts,  we will
reinvest  distributions unless you elect to receive them in cash. Please consult
our Investor Services Guide for further information regarding  distributions and
your distribution options.

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The net asset value of a fund is the price of the fund's shares.

Capital gains is the increase in value of a capital asset,  such as stock,  from
the time it is  purchased.  Tax becomes  due on capital  gains once the asset is
sold.

**********END LEFT MARGIN CALLOUTS





Taxes

The tax  consequences  of  owning  shares of the funds  will vary  depending  on
whether you own them through a taxable or tax-deferred account. Tax consequences
result from  distributions  by the funds of dividend and interest  income it has
received and capital gains it has generated  through its investment  activities,
and by sales of fund shares by investors after the net asset value has increased
or decreased.

Tax-Deferred Accounts

If you purchase fund shares through a tax-deferred  account, such as an IRA or a
qualified  employer-sponsored  retirement  or savings  plan,  income and capital
gains  distributions  usually will not be subject to current taxation,  but will
accumulate in your account  under the plan on a  tax-deferred  basis.  Likewise,
moving  from one fund to  another  fund  within a plan or  tax-deferred  account
generally  will  not  cause  you to be  taxed.  For  information  about  the tax
consequences of making  purchases or withdrawals  through an employer  sponsored
retirement  or  savings  plan,  or  through  an IRA,  please  consult  your plan
administrator, your summary plan description or a professional tax advisor.

Taxable Accounts

If you own fund shares through a taxable account,  distributions by the fund and
sales by you of fund shares may cause you to be taxed.

Taxability of Distributions

Fund distributions may consist of income earned by the fund from sources such as
dividends  and  interest,  or  capital  gains  generated  from  the sale of fund
investments.  Distributions of income are taxed as ordinary income. Distribution
of capital gains are classified  either as short term or long term and are taxed
as follows:

<TABLE>
Type of Distribution            Tax rate for 15% Bracket       Tax rate for 28% Bracket or
                                                                          above
- ----------------------------- ------------------------------ ---------------------------------
<S>                                        <C>                             <C>
Short-term capital gains          Ordinary income rate             Ordinary income rate
Long-term capital gains                    10%                             20%
</TABLE>

The tax status of any  distribution  of capital  gains is determined by how long
the fund held the  underlying  security that was sold,  not by how long you have
been  invested  in the  fund or  whether  you  reinvest  your  distributions  in
additional  shares or take them as income.  American Century will detail the tax
status of fund  distributions  for each calendar year in an annual tax statement
from the fund.

Distributions  also may be subject to state and local taxes.  Because everyone's
tax situation is unique,  always  consult your tax  professional  about federal,
state and local tax consequences.

Taxes on Transactions

Your  redemptions -- including  exchanges to other American Century funds -- are
subject to capital  gains tax.  The table above can provide a general  guide for
your potential tax liability when selling or exchanging fund shares. "Short-term
capital  gains" are gains on fund shares held for 12 months or less.  "Long-term
capital  gains" are gains on fund shares  held for more than 12 months.  If your
shares  decrease in value,  their sale or exchange will result in a long-term or
short-term capital loss.

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*    Buying a Dividend

     Purchasing  fund shares in a taxable  account shortly before a distribution
     is sometimes  known as "buying a dividend." In taxable  accounts,  you must
     pay income taxes on the  distribution  whether you take the distribution in
     cash or  reinvest  it.  In  addition,  you  will  have to pay  taxes on the
     distribution whether the value of your investment  decreased,  increased or
     remained  the same after you bought the fund  shares.  The risk in buying a
     dividend is that a fund's  portfolio may build up taxable gains  throughout
     the period covered by a  distribution,  as securities are sold at a profit.
     We distribute those gains to you, after subtracting any losses, even if you
     did not own the shares when the gains occurred. Thus if you buy a dividend,
     you incur the full tax liability of the  distribution  period,  but you may
     not enjoy the full benefit of the gains realized in the fund's portfolio.

**********END LEFT MARGIN CALLOUTS






Multiple Class Information

American   Century   offers  three  classes  of  the  funds:   Investor   Class,
Institutional Class and Advisor Class. The shares offered by this Prospectus are
Institutional Class shares and are offered primarily to institutional investors,
through  institutional   distribution   channels,   such  as  employer-sponsored
retirement plans, or through banks, broker-dealers and insurance companies.

American Century offers another class of shares that has no up-front or deferred
charges,  commissions  or 12b-1 fees.  The funds may offer a different  class of
shares primarily to institutional investors,  through institutional distribution
channels,  such  as  employer-sponsored  retirement  plans,  or  through  banks,
broker-dealers and insurance  companies.  The other classes have different fees,
expenses,  and/or minimum investment  requirements than the Institutional Class.
The  difference in the fee  structures  among the classes is the result of their
separate  arrangements  for  shareholder and  distribution  services and not the
result of any difference in amounts  charged by the advisor for core  investment
advisory  services.  Accordingly,  the core investment  advisory expenses do not
vary by  class.  Different  fees  and  expenses  will  affect  performance.  For
additional  information  concerning  the other  classes of shares not offered by
this Prospectus,  call us at 1-800-345-3533 or contact a sales representative or
financial intermediary who offers those classes of shares.

Except as  described  below,  all  classes  of  shares of a fund have  identical
voting,  dividend,   liquidation  and  other  rights,  preferences,   terms  and
conditions.  The only  differences  among the various classes are (a) each class
may be subject to different  expenses specific to that class, (b) each class has
a different identifying designation or name, (c) each class has exclusive voting
rights with respect to matters solely  affecting such class,  (d) each class may
have different exchange privileges,  and (e) the Institutional Class may provide
for automatic  conversion  from that class into shares of the Investor  Class of
the same fund.







Financial Highlights
Understanding the Financial Highlights

This table  itemizes what  contributed  to the changes in share price during the
period,  and compares  this to changes over the last five fiscal years (or less,
if the share class is not five years old).

On a per-share basis, it includes:

o        share price at the beginning of the period
o        investment income and capital gains or losses
o        distributions of income and capital gains paid to shareholders
o        share price at the end of the period

It also includes some key statistics for the period:

o    Total Return--the  overall  percentage of return of the fund,  assuming the
     reinvestment of all distributions

o    Expense Ratio--operating expenses as a percentage of average net assets

o    Net Income  Ratio--net  investment  income as a  percentage  of average net
     assets

o    Portfolio  Turnover--the  percentage  of  the  fund's  buying  and  selling
     activity

The  Financial  Highlights  for the fiscal years ended October 31, 1997 and 1998
have been audited by Deloitte & Touche LLP, independent  auditors.  Their report
is in the funds' annual  report,  which is  incorporated  by reference  into the
Statement of Additional Information, and is available upon request. Prior years'
information was audited by other independent auditors, whose report thereon also
is incorporated by reference into the Statement of Additional Information.






<TABLE>
<CAPTION>
Growth

                                                           1998          1997           1996          1995          1994
PER-SHARE DATA
<S>                                                  <C>             <C>            <C>           <C>          <C>
Net Asset Value, Beginning of Year.........
                                                       ------------- -------------- ------------- ------------- --------------
Income from Investment Operations
   Net Investment Income (dividends).......
   Net Realized and Unrealized Gain (Loss) on
   Investment Transactions.................
                                                       ------------- -------------- ------------- ------------- --------------
   Total From Investment Operations........
                                                       ------------- -------------- ------------- ------------- --------------
Less Distributions
   From Net Investment Income (dividends)..
                                                       ------------- -------------- ------------- ------------- --------------
                                                       ------------- -------------- ------------- ------------- --------------
Net Asset Value, End of Year...............
                                                       ------------- -------------- ------------- ------------- --------------
Total Return(1)............................

RATIOS/SUPPLEMENTAL DATA

Ratio of Operating Expenses to 
   Average Net Assets ..................... 
Ratio of Net Investment Income to 
   Average Net Assets ..................... 
Net Assets, End of Year (in thousands).....

(1) Total return assumes reinvestment of dividends and capital gains, if any.
</TABLE>







<TABLE>
<CAPTION>
Ultra
                                                           1998          1997           1996          1995          1994
PER-SHARE DATA
<S>                                                  <C>             <C>            <C>           <C>          <C>
Net Asset Value, Beginning of Year.........
                                                       ------------- -------------- ------------- ------------- --------------
Income from Investment Operations
   Net Investment Income (dividends).......
   Net Realized and Unrealized Gain (Loss) on
   Investment Transactions.................
                                                       ------------- -------------- ------------- ------------- --------------
   Total From Investment Operations........
                                                       ------------- -------------- ------------- ------------- --------------
Less Distributions
   From Net Investment Income (dividends)..
                                                       ------------- -------------- ------------- ------------- --------------
                                                       ------------- -------------- ------------- ------------- --------------
Net Asset Value, End of Year...............
                                                       ------------- -------------- ------------- ------------- --------------
Total Return(1)............................

RATIOS/SUPPLEMENTAL DATA
Ratio of Operating Expenses to 
   Average Net Assets ..................... 
Ratio of Net Investment Income to 
   Average Net Assets ..................... 
Net Assets, End of Year (in thousands).....

(1) Total return assumes reinvestment of dividends and capital gains, if any.
</TABLE>




<TABLE>
<CAPTION>
Select

                                                           1998          1997           1996          1995          1994
PER-SHARE DATA
<S>                                                  <C>             <C>            <C>           <C>          <C>
Net Asset Value, Beginning of Year.........
                                                       ------------- -------------- ------------- ------------- --------------
Income from Investment Operations
   Net Investment Income (dividends).......
   Net Realized and Unrealized Gain (Loss) on
   Investment Transactions.................
                                                       ------------- -------------- ------------- ------------- --------------
   Total From Investment Operations........
                                                       ------------- -------------- ------------- ------------- --------------
Less Distributions
   From Net Investment Income (dividends)..
                                                       ------------- -------------- ------------- ------------- --------------
                                                       ------------- -------------- ------------- ------------- --------------
Net Asset Value, End of Year...............
                                                       ------------- -------------- ------------- ------------- --------------
Total Return(1)............................

RATIOS/SUPPLEMENTAL DATA
Ratio of Operating Expenses to 
   Average Net Assets ..................... 
Ratio of Net Investment Income to 
   Average Net Assets ..................... 
Net Assets, End of Year (in thousands).....

(1) Total return assumes reinvestment of dividends and capital gains, if any.
</TABLE>




<TABLE>
<CAPTION>
Vista

                                                           1998          1997           1996          1995          1994
PER-SHARE DATA
<S>                                                  <C>             <C>            <C>           <C>          <C>
Net Asset Value, Beginning of Year.........
                                                       ------------- -------------- ------------- ------------- --------------
Income from Investment Operations
   Net Investment Income (dividends).......
   Net Realized and Unrealized Gain (Loss) on
   Investment Transactions.................
                                                       ------------- -------------- ------------- ------------- --------------
   Total From Investment Operations........
                                                       ------------- -------------- ------------- ------------- --------------
Less Distributions
   From Net Investment Income (dividends)..
                                                       ------------- -------------- ------------- ------------- --------------
                                                       ------------- -------------- ------------- ------------- --------------
Net Asset Value, End of Year...............
                                                       ------------- -------------- ------------- ------------- --------------
Total Return(1)............................

RATIOS/SUPPLEMENTAL DATA
Ratio of Operating Expenses to 
   Average Net Assets ..................... 
Ratio of Net Investment Income to 
   Average Net Assets ..................... 
Net Assets, End of Year (in thousands).....

(1) Total return assumes reinvestment of dividends and capital gains, if any.
</TABLE>




<TABLE>
<CAPTION>
Heritage

                                                           1998          1997           1996          1995          1994
PER-SHARE DATA
<S>                                                  <C>             <C>            <C>           <C>          <C>
Net Asset Value, Beginning of Year.........
                                                       ------------- -------------- ------------- ------------- --------------
Income from Investment Operations
   Net Investment Income (dividends).......
   Net Realized and Unrealized Gain (Loss) on
   Investment Transactions.................
                                                       ------------- -------------- ------------- ------------- --------------
   Total From Investment Operations........
                                                       ------------- -------------- ------------- ------------- --------------
Less Distributions
   From Net Investment Income (dividends)..
                                                       ------------- -------------- ------------- ------------- --------------
                                                       ------------- -------------- ------------- ------------- --------------
Net Asset Value, End of Year...............
                                                       ------------- -------------- ------------- ------------- --------------
Total Return(1)............................

RATIOS/SUPPLEMENTAL DATA
Ratio of Operating Expenses to 
   Average Net Assets ..................... 
Ratio of Net Investment Income to 
   Average Net Assets ..................... 
Net Assets, End of Year (in thousands).....

(1) Total return assumes reinvestment of dividends and capital gains, if any.
</TABLE>









Performance Information of the Other Class
The Institutional  Class of the funds was established in 1996. As a result,  the
following  financial  information  is  provided to show the  performance  of the
funds' original class of shares.  This class,  the Investor  Class,  has a total
expense  ratio  that is  0.20%  higher  than  the  Institutional  Class.  If the
Institutional Class existed during the periods presented,  its performance would
have been higher because of the lower expense.

This table  itemizes what  contributed  to the changes in share price during the
period,  and compares  this to changes over the last five fiscal years (or less,
if the share class is not five years old).

On a per-share basis, it includes:

o        share price at the beginning of the period
o        investment income and capital gains or losses
o        distributions of income and capital gains paid to shareholders
o        share price at the end of the period

It also includes some key statistics for the period:

o    total return--the  overall  percentage of return of the fund,  assuming the
     reinvestment of all distributions

o    expense ratio--operating expenses as a percentage of average net assets

o    net income  ratio--net  investment  income as a  percentage  of average net
     assets

o    portfolio  turnover--the  percentage  of  the  fund's  buying  and  selling
     activity


The following  Financial  Highlights for the fiscal years ended October 31, 1997
and 1998, have been audited by Deloitte & Touche,  independent  auditors.  Their
report is in the funds' annual report,  which is  incorporated by reference into
the Statement of Additional  Information,  and is available upon request.  Prior
years'  information  was audited by other  independent  auditors,  whose  report
thereon also is  incorporated  by  reference  into the  Statement of  Additional
Information.










Growth

                                                        1998          1997
PER-SHARE DATA
Net Asset Value, Beginning of Year
                                                    ------------- --------------
Income from Investment Operations
   Net Investment Income (dividends)
   Net Realized and Unrealized Gain (Loss) on
   Investment Transactions
                                                    ------------- --------------
   Total From Investment Operations
                                                    ------------- --------------
Less Distributions
   From Net Investment Income (dividends)
                                                    ------------- --------------
                                                    ------------- --------------
Net Asset Value, End of Year
                                                    ------------- --------------
Total Return(1)
RATIOS/SUPPLEMENTAL DATA
Ratio of Operating Expenses to Average Net Assets
Ratio of Net Investment Income to Average Net Assets
Net Assets, End of Year (in thousands)

(1) Total return assumes reinvestment of dividends and capital gains, if any.






<TABLE>
<CAPTION>
Ultra

                                                      1998          1997           1996
PER-SHARE DATA
<S>                                               <C>             <C>           <C>
Net Asset Value, Beginning of Year
                                                  ------------- -------------- -------------
Income from Investment Operations
   Net Investment Income (dividends)
                                                  ------------- -------------- -------------
Less Distributions
   From Net Investment Income (dividends)
                                                  ------------- -------------- -------------
Net Asset Value, End of Year
                                                  ------------- -------------- -------------
Total Return(1)
RATIOS/SUPPLEMENTAL DATA
Ratio of Operating Expenses to Average Net Assets
Ratio of Net Investment Income to Average Net Assets
Net Assets, End of Year (in thousands)
</TABLE>

(1) Total return assumes reinvestment of dividends and capital gains, if any.






Select

                                                        1998          1997
PER-SHARE DATA
Net Asset Value, Beginning of Year
                                                    ------------- --------------
Income from Investment Operations
   Net Investment Income (dividends)
   Net Realized and Unrealized Gain (Loss) on
   Investment Transactions
                                                    ------------- --------------
   Total From Investment Operations
                                                    ------------- --------------
Less Distributions
   From Net Investment Income (dividends)
                                                    ------------- --------------
                                                    ------------- --------------
Net Asset Value, End of Year
                                                    ------------- --------------
Total Return(1)
RATIOS/SUPPLEMENTAL DATA
Ratio of Operating Expenses to Average Net Assets
Ratio of Net Investment Income to Average Net Assets
Net Assets, End of Year (in thousands)

(1) Total return assumes reinvestment of dividends and capital gains, if any.






<TABLE>
<CAPTION>
Vista

                                                      1998          1997           1996
PER-SHARE DATA
<S>                                               <C>             <C>           <C>
Net Asset Value, Beginning of Year
                                                  ------------- -------------- -------------
Income from Investment Operations
   Net Investment Income (dividends)
                                                  ------------- -------------- -------------
Less Distributions
   From Net Investment Income (dividends)
                                                  ------------- -------------- -------------
Net Asset Value, End of Year
                                                  ------------- -------------- -------------
Total Return(1)
RATIOS/SUPPLEMENTAL DATA
Ratio of Operating Expenses to Average Net Assets
Ratio of Net Investment Income to Average Net Assets
Net Assets, End of Year (in thousands)
</TABLE>

(1) Total return assumes reinvestment of dividends and capital gains, if any.






Heritage

                                                        1998          1997
PER-SHARE DATA
Net Asset Value, Beginning of Year
                                                    ------------- --------------
Income from Investment Operations
   Net Investment Income (dividends)
   Net Realized and Unrealized Gain (Loss) on
   Investment Transactions
                                                    ------------- --------------
   Total From Investment Operations
                                                    ------------- --------------
Less Distributions
   From Net Investment Income (dividends)
                                                    ------------- --------------
                                                    ------------- --------------
Net Asset Value, End of Year
                                                    ------------- --------------
Total Return(1)
RATIOS/SUPPLEMENTAL DATA
Ratio of Operating Expenses to Average Net Assets
Ratio of Net Investment Income to Average Net Assets
Net Assets, End of Year (in thousands)

(1) Total return assumes reinvestment of dividends and capital gains, if any.










More information about the funds is contained in these documents:

Annual and Semiannual Reports.  These reports contain more information about the
fund's  investments  and the market  conditions and investment  strategies  that
significantly  affected the fund's  performance during the most recent six-month
fiscal period.

Statement of Additional  Information.  The SAI contains a more  detailed,  legal
description  of the funds'  operations,  investment  restrictions,  policies and
practices. The SAI is incorporated by reference into this Prospectus. This means
that it is legally part of this Prospectus, even if you don't request a copy.

You also can get information about the funds (including the SAI) from the SEC.

v        In person.        SEC Public Reference Room
                           Washington, D.C.
                           Call 1-800-SEC-0330 for location and hours.
v        On the internet.  www.sec.gov.
v        By mail.          Public Reference Section
                           Washington, D.C.
                           20549-6009
                           The SEC will charge a fee for  copying the  documents
                           you request.


American Century Investments
P.O. Box 419385
Kansas City, Missouri 64141-6385

Institutional Services
1-800-345-3533 or 816-531-5575

Automated Information Line
1-800-345-8765

Fax
816-340-4655

www.americancentury.com

Telecommunications Device for the Deaf
1-800-345-1833 or 816-444-3038

Corporate, Not-for-Profit, Keogh,
SEP-, SARSEP-, SIMPLE-IRA and 403(b) Services
1-800-345-3533

Investment Company Act File No. 811-0816
<PAGE>
[american century logo(reg.sm)]
American
Century

Prospectus


January 29, 1999
- --------------------------------------------------------------------------------

AMERICAN CENTURY

Balanced

INSTITUTIONAL Class

The  Securities and Exchange  Commission  has not approved or disapproved  these
securities or determined if this Prospectus is accurate or complete.  Anyone who
tells you otherwise is committing a crime.

Distributed by Funds Distributor, Inc.






Reading a prospectus doesn't have to be a chore. We've done the hard work so you
can focus on what's  important--learning  about the fund. Take a look inside and
you'll see this  prospectus  is  different  from  others.  It takes a  clear-cut
approach to fund information.

Here's what you'll find:

o    The fund's primary investments and risks

o    A description of who may or may not want to invest in the fund

o    Fund performance,  including returns for each year, best and worst quarters
     and average annual returns compared to the fund's benchmarks

o    An overview of ways to best manage your accounts

o    Helpful tips and definitions of key investment terms

Whether  you're a current  investor or  investing  in mutual funds for the first
time, this prospectus will give you a clear  understanding  of the funds. If you
have questions,  our Investor Services Representatives are available weekdays, 7
a.m. to 7 p.m.  Central time. Our toll-free  number is  1-800-345-2021.  We look
forward to helping you achieve your financial goals.

                                  Sincerely,


                                  Mark Killen
                                  Senior Vice President
                                  American Century Investment Services, Inc.








Table of Contents

An Overview of the Fund....................................2

Fees and Expenses..........................................3

Detailed Information about the Fund........................4

Management................................................15

Investing with American Century...........................18

Share Price and Distributions.............................21

Taxes.....................................................22

Multiple Class Information................................22

Financial Highlights......................................23

Performance Information of the Other Class................XX

Fund Reference
                      Fund Code
- --------------------------------------
Balanced              031
- --------------------------------------

**********LEFT MARGIN CALLOUTS

Throughout  this  book  you'll  find  definitions  of key  investment  terms and
phrases.  When you see a word printed in green italics,  look for its definition
in the left margin.

*........This symbol highlights special information and helpful tips.

**********END LEFT MARGIN CALLOUTS








An Overview of the Fund

What is the fund's investment goal?

This fund  seeks  long-term  capital  growth  and  current  income by  investing
approximately 60% of the fund's assets in equity securities, while the remainder
is invested in bonds and other fixed income securities.

What is the fund's primary investment strategy?

In  selecting  stocks for the equity  portion of Balanced,  the advisor  selects
primarily from the largest 1500 publicly traded U.S. companies. The fixed-income
portion  of the  fund is  invested  in a  diversified  portfolio  of  high-grade
securities. A more detailed description of the fund's investment strategy begins
on page XX

What are the fund's principal risks?

o Market Risk       the value of the fund's  shares will go up and down based on
                    the  performance of the companies  whose  securities it owns
                    and other factors affecting the securities market generally.

oInterest Rate Risk when  interest  rates  change,   the  value  of  the  fund's
                    fixed-income securities will be affected.

o Principal Loss    as with all mutual funds, if you sell your shares when their
                    value is less than the price you paid, you will lose money.

Who may want to invest in the fund?

The fund may be a good investment if you are

0    seeking a fund that combines the potential  for  long-term  capital  growth
     with income

0    seeking  the  convenience  of a  fund  that  invests  in  both  equity  and
     fixed-income securities

0    comfortable with the risks associated with the fund's investment strategy

0    investing through an IRA or other tax-advantaged retirement plan

Who may not want to invest in the fund?

The fund may not be a good investment if you

0    do not want current income from your investment

0    investing for a short period of time

0    uncomfortable with volatility in the value of your investment

**********LEFT MARGIN CALLOUTS

*    An  investment  in the fund is not a bank  deposit  and is not  insured  or
     guaranteed  by the  Federal  Deposit  Insurance  Corporation  or any  other
     government agency.

**********END LEFT MARGIN CALLOUTS







Fees and Expenses

There are no sales loads or fees or other charges

0    to buy fund shares directly from American Century

0    to reinvest dividends in additional shares

0    to exchange into the  Institutional  Class shares of other American Century
     funds.

The following  tables describe the fees and expenses that you may pay if you buy
and hold shares of the fund.

<TABLE>
Annual Operating Expenses (expenses that are deducted from fund assets)

                Management Fee       Distribution and        Other Expenses1    Total Annual Fund
                                     Service (12b-1) Fees                       Operating Expenses
- --------------- -------------------- ----------------------- ------------------ ---------------------
<S>             <C>                                          <C>                <C>  
Balanced        0.80%                None                    0.00%              0.80%
- --------------- -------------------- ----------------------- ------------------ ---------------------
</TABLE>

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 of Hypothetical Fund Costs

The  examples in the table  below are  intended to help you compare the costs of
investing in a fund with those of other mutual funds. Assuming you ...

o        invest $10,000 in the fund

o        redeem all of your shares at the end of the periods shown below

o        earn a 5% return each year and

o        incur the same operating expenses shown above

 ... your cost of investing in the fund would be:

                1 Year     3 Years     5 Years     10 Years
- --------------- ---------- ----------- ----------- -----------
Balanced        $82        $255        $443        $987
- --------------- ---------- ----------- ----------- -----------

**********LEFT MARGIN CALLOUTS

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

**********END LEFT MARGIN CALLOUTS







Detailed Information about the Fund

Balanced

What is the fund's investment objective?

The fund  seeks  long-term  capital  growth  and  current  income  by  investing
approximately 60% of the fund's assets in equity securities, while the remainder
is invested in bonds and other fixed income  securities.  This is a  fundamental
policy and cannot be changed without shareholder approval.

How does the fund pursue its investment objective?

With the equity  portion of the Balanced  portfolio,  the fund managers  utilize
quantitative  management  techniques in a two-step process that draws heavily on
computer technology. In the first step, the fund managers rank stocks, primarily
the 1,500 largest  publicly traded  companies in the United States  (measured by
the value of their  stock).  These  rankings are  determined by using a computer
model that  combines  measures  of a stock's  value,  as well as measures of its
growth  potential.  To measure value,  the manager uses ratios of stock price to
book value and stock price to cash flow,  among others.  To measure growth,  the
managers  use,  among  others,  the rate of growth of a company's  earnings  and
changes in its earnings estimates.

In the second step, the managers use a technique called portfolio  optimization.
In portfolio  optimization,  the manager uses a computer to build a portfolio of
stocks  from the  ranking  described  earlier  that it thinks  will  provide the
optimal  balance  between  risk and  expected  return.  The goal is to create an
equity portfolio that provides better returns than the S&P 500 without taking on
significant additional risk.

The  fixed-income  portion of the fund's  portfolio  is invested  primarily in a
diversified  portfolio of high-grade  government,  corporate,  asset-backed  and
similar securities payable in U.S. currency, with a minimum of 25% of the fund's
assets in  fixed-income  senior  securities.  At least  80% of the  fixed-income
assets will be invested in securities  that, at the time of purchase,  are rated
within the three  highest  categories  by a  nationally  recognized  statistical
rating  organization.  Up to 20% of the fixed income  portion may be invested in
the fourth category rated securities, and up to 15% may be invested in the fifth
category.  Under normal market  conditions the weighted average maturity for the
fixed-income portfolio will be in the three- to 10-year range.

The fund  managers do not attempt to time the  market.  Instead,  they intend to
keep the fund essentially fully invested in stocks regardless of the movement of
stock prices generally.  When the fund managers believe that it is prudent,  the
fund may  invest a portion  of its  assets in  convertible  securities,  foreign
securities,  short-term securities,  non-leveraged stock index futures contracts
and  other  similar  securities.  Stock  index  futures  contracts,  a  type  of
derivative  security,  can help the  fund's  cash  assets  remain  liquid  while
performing more like stocks. The fund has a policy governing stock index futures
and  similar  derivative  securities  to help  manage the risk of these types of
investments. For example, the fund managers cannot leverage the fund's assets by
investing in a derivative  security.  A complete  description of the derivatives
policy is included in the Statement of Additional Information.

**********LEFT MARGIN CALLOUTS

Senior Securities is a term that refers to the bonds of a company that are first
in line for payment if it has difficulties meeting its payment  obligations.  As
long as a series of a company's  bonds is not  subordinated to another series of
the company's bonds, it is considered "senior" debt.

Weighted  average  maturity is a tool that the advisor uses to  approximate  the
remaining  maturity of a fund's investment  portfolio.  Generally,  the longer a
fund's  weighted  average  maturity,  the more  sensitive  it is to  changes  in
interest rates.

**********END LEFT MARGIN CALLOUTS



Additional  information about Balanced'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 six-month period.  You may get these
reports at no cost by calling us.

**********LEFT MARGIN CALLOUTS

*    Fixed-income  securities  are  rated by  nationally  recognized  securities
     ratings  organizations  (SROs), such as Moody's and Standard & Poor's. Each
     SRO has its own  system  for  classifying  securities,  but  each  tries to
     indicate a  company's  ability to make  timely  payments  of  interest  and
     principal. A detailed description of SROs, their ratings system and what we
     do if a security  isn't rated is included in the  Statement  of  Additional
     Information.

**********END LEFT MARGIN CALLOUTS

What are the primary risks of investing in the fund?

The value of  Balanced's  shares  depends on the value of the stocks,  bonds and
other  securities  it owns.

o    The value of the individual equity securities  Balanced owns will go up and
     down  depending  on the  performance  of the  companies  that issued  them,
     general market and economic conditions, and investor confidence.

o    The value of the fund's fixed-income  securities will be affected primarily
     by rising  or  falling  interest  rates and the  continued  ability  of the
     issuers of these  securities  to make payments of interest and principal as
     they become due.

Generally,  when  interest  rates  rise,  the value of the  fund's  fixed-income
securities will decline.  The opposite is true when interest rates decline.  The
interest  rate risk for  Balanced  is higher  than for funds that have a shorter
weighted average maturity, such as money market and short-term bond funds.

The lowest rated bonds in which the fund may invest,  BBB- and  BB-rated  bonds,
contain  some  speculative  characteristics.  Having  these  bonds in the fund's
portfolio  means the fund's  value may go down more if  interest  rates or other
economic conditions change than if the fund contained only higher rated bonds.

As with all funds,  at any given time,  the value of your shares of Balanced 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.


Fund Performance History

The Institutional  Class of shares was established in 1996,  however,  no shares
had been issued  prior to the fund's  fiscal  year end.  The  original  class of
shares was the Investor Class of shares.  For  information  about the historical
performance of the original class of shares, see page xx







Management

Who manages the fund?

The Board of Directors,  investment  advisor and portfolio  management team play
key roles in the management of the fund.

The Board of Directors

The Board of Directors  oversees the  management  of the fund and meets at least
quarterly  to  review  reports  about  fund  operations.  Although  the Board of
Directors does not manage the fund, it has hired an investment advisor to do so.
More than half of the Directors are independent of the fund's advisor,  that is,
they are not employed by and have no financial interest in the advisor.

The Investment Advisor

The fund's investment  advisor is American Century Investment  Management,  Inc.
The advisor has been  managing  mutual  funds  since 1958.  American  Century is
headquartered at 4500 Main Street, Kansas City, Missouri 64111.

The advisor is responsible  for managing the  investment  portfolios of the fund
and directing the purchase and sale of its  investment  securities.  The advisor
also arranges for transfer agency,  custody and all other services necessary for
the fund to operate.

For the services it provided to the fund during its most recent fiscal year, the
advisor received a unified management fee of 0.80% the average net assets of the
Institutional  Class of shares of the fund.  The amount of the management fee is
calculated  on a class by class basis daily and paid  monthly.  Out of that fee,
the  advisor  pays all  expenses  of  managing  and  operating  the fund  except
brokerage  expenses,  taxes,  interest,  fees and  expenses  of the  independent
Directors (including legal fees) and extraordinary expenses.






The Fund Management Team

The advisor uses teams of portfolio  managers,  assistant portfolio managers and
analysts to manage the fund. Teams meet regularly to review  portfolio  holdings
and to discuss purchase and sale activity.  Team members buy and sell securities
for a fund as they  see fit,  guided  by the  fund's  investment  objective  and
strategy.

Portfolio manager members of the investment team are identified below:

Norman E. Hoops
Norman E. Hoops, Senior Vice President and Portfolio Manager,  has been a member
of the team that  manages  Balanced  since  November  1989.  He joined  American
Century as Vice President and Portfolio Manager in November 1989. In April 1993,
he became Senior Vice  President.  He has a bachelor of arts degree from Indiana
University and an MBA from Butler University.

John Schniedwind
John Schniedwind,  Senior Vice President and Group  Leader-Quantitative  Equity,
has been a member of the team that manages  Balanced  since  November  1998.  He
joined American Century in 1982 and also supervises  other portfolio  management
teams. He has a bachelor of science degree from Purdue  University and an MBA in
finance from University of California. He is a Chartered Financial Analyst.

Jeffrey R. Tyler
Jeffrey R. Tyler, Senior Vice President and Portfolio Manager, has been a member
of the team that manages Balanced since November 1998. He has been with American
Century as a portfolio manager since January 1988. He has a bachelor's degree in
business  economics  from the University of California and an MBA in finance and
economics from Northwestern University. He is a Chartered Financial Analyst.

Jeffrey L. Houston
Jeffrey  L.  Houston,  Portfolio  Manager,  has been a member  of the team  that
manages  Balanced since June 1995. He joined  American  Century as an Investment
Analyst in November 1990 and was promoted to Portfolio Manager in 1994. He has a
bachelor of arts degree from the University of Delaware and an MPA from Syracuse
University. He is a Chartered Financial Analyst.

**********LEFT MARGIN CALLOUTS

*    Code of Ethics

     American Century has a Code of Ethics designed to ensure that the interests
     of fund shareholders come before the interests of the people who manage the
     fund.  Among  other  provisions,  the Code of  Ethics  prohibits  portfolio
     managers  and other  investment  personnel  from  buying  securities  in an
     initial public offering or from profiting from the purchase and sale of the
     same  security  within 60 calendar  days.  In addition,  the Code of Ethics
     requires  portfolio managers and other employees with access to information
     about the purchase or sale of  securities  by the funds to obtain  approval
     before executing permitted personal trades.

**********END LEFT MARGIN CALLOUTS







Fundamental Investment Policies

Fundamental  investment  policies  contained  in  the  Statement  of  Additional
Information and the investment objectives of the fund may not be changed without
a shareholder  vote.  The Board of Directors  may change any other  policies and
investment strategies.

Year 2000 Issues

Many of the world's  computer  systems  currently  cannot properly  recognize or
process date-sensitive information relating to the Year 2000 and beyond. Because
this may impact the computer systems of various American  Century-affiliated and
external service providers for the fund,  American Century formally  initiated a
Year 2000  readiness  project in July 1997.  It  involves a team of  information
technology  professionals  assisted  by  outside  consultants  and  guided  by a
senior-level steering committee.  The team's goal is to assess the impact of the
Year 2000 on  American  Century's  systems,  renovate  or  replace  noncompliant
critical systems and test those systems. In addition,  the team has been working
to gather  information  about the Year 2000  efforts of the fund's  other  major
service providers.  Although American Century believes its critical systems will
function  properly in the Year 2000, this is not  guaranteed.  If the efforts of
American  Century or its external  service  providers  are not  successful,  the
fund's  business,  particularly  the provision of shareholder  services,  may be
hampered.

In  addition,  the  issuers  of  securities  the fund owns  could have Year 2000
computer  problems.  These problems could  negatively  affect the value of their
securities, which, in turn, could impact the fund's performance. The advisor has
established a process to gather publicly  available  information  about the Year
2000  readiness  of these  issuers.  However,  this  process may not uncover all
relevant  information,  and the  information  gathered  may not be complete  and
accurate.  Moreover, an issuer's Year 2000 readiness is only one of many factors
the fund  managers  may consider  when making  investment  decisions,  and other
factors may receive greater weight.






Investing with American Century

Eligibility for Institutional Class Shares

The  Institutional  Class  shares  are  made  available  for  purchase  by large
institutional  shareholders,  such  as  bank  trust  departments,  corporations,
retirement plans,  endowments,  foundations and financial advisors that meet the
fund's  minimum  investment  requirements.  Institutional  Class  shares are not
available for purchase by insurance  companies for variable annuity and variable
life products.

Minimum Initial Investment Amounts

The minimum investment is $5 million ($3 million for endowments and foundations)
for the fund.  If you  invest  with us  through a  financial  intermediary,  the
minimum  investment  requirement  may be met by aggregating  the  investments of
various  clients  of  your  financial   intermediary.   The  minimum  investment
requirement may be waived if you or your financial intermediary,  if applicable,
has an  aggregate  investment  in our family of funds of $10 million or more ($5
million for endowments and  foundations).  Retirement plans may also be required
to meet  certain  other  requirements,  such as plan size or a minimum  level of
assets per participant,  in order to be eligible to purchase Institutional Class
shares.

Redemption of shares in below-minimum accounts

If your balance or the balance of your  financial  intermediary,  if applicable,
falls below the minimum investment requirements due to redemptions or exchanges,
we reserve the right to convert your shares to Investor Class shares of the same
fund.  The  Investor  Class shares have a unified  management  fee that is 0.20%
higher than the Institutional Class.

Services Automatically Available to You

You  automatically  will have access to the services  listed below when you open
your account.  If you do not want these services,  see  "Conducting  Business in
Writing" below.

Conducting Business in Writing

If you prefer to conduct  business in writing only, you can indicate this on the
account  application.  If you choose to do  business in writing  only,  you must
provide written instructions to invest,  exchange and redeem. All account owners
must sign transaction  instructions (with signatures  guaranteed for redemptions
in excess of $100,000).  If you want to add services later,  you can complete an
Investor Service Options form.



<TABLE>
Ways to Manage Your Account
- -------------------------------------------------------------------------------------------------------------------------------
- ---------------------------------- ---------------------------------------------- -----------------------------------------------
<S>                             <C>                                               <C>
By telephone                       Open an account                                Make additional investments  
Institutional Services             If you are a current investor,  you            Call us if you have authorized us to invest
1-800-345-3533                     can open an account by exchanging              from your bank account.
7 a.m. to 7 p.m. Central time      shares from another American Century
                                   account. (This service is not                  Sell shares
                                   available if you have chosen to do             Call an Institutional Service Representative.
                                   business in writing only.)

                                   Exchange shares
                                   Call us if you have  authorized  us to accept
                                   telephone instructions.
- ---------------------------------- ---------------------------------------------- -----------------------------------------------
- ---------------------------------- ---------------------------------------------- -----------------------------------------------
By mail or fax                     Open an account                                Make additional investments 
PO Box 419385                      Send a signed and  completed                   Send us your check or money order for at 
Kansas City, MO 64141-6385         application  and check or money order          least $50 with an  investment slip or $250
                                   payable to American Century                    without an investment slip. If you don't have
Fax 816-340-4655                   Investments.                                   an investment slip, include your name,
                                                                                  address and account number on your check or
                                   Exchange shares                                money order.
                                   Send us written instructions to
                                   exchange your shares from one                  Sell shares
                                   American Century account to another.           Send us written instructions to sell shares or
                                                                                  send us a redemption form. Call an Institutional
                                                                                  Service Representative to request a form.




A Note About Mailings to Shareholders

To reduce expenses and demonstrate respect for our environment,  we will deliver
most financial  reports,  prospectuses and account statements to households in a
single  envelope,  even if the accounts are registered under different names. If
you would like  additional  copies of  financial  reports  and  prospectuses  or
separate mailing of account statements, please call us.

Your Guide to Services and Policies

When you open an account,  you will receive an Investor  Services  Guide,  which
explains  the  services  available  to you and the  policies of the fund and the
transfer agent.

- -------------------------------- ------------------------------------------------ -----------------------------------------------
By wire                          Open an account                                  Make additional investments
                                 Call us to set up your account or mail           Follow the wire instructions provided in the
                                 a completed application to the address           "Open an account" section
                                 provided in the "By Mail" section and
                                 give your bank:                                  Sell shares
                                 o        Our bank information:                   You can receive redemption proceeds by
                                    -       Commerce Bank N.A.                    wire  or electronic transfer.  (This
                                    -       Routing No. 101000019                 service is not available if you have
                                    -       ACMF Account No. 2804918              chosen to do business in writing only.)
                                 o        The fund name
                                 o        Your American Century account number
                                 o        Your name
                                 o        The contribution year (for IRAs only)
                                                                                  Exchange shares
                                                                                  Not available.
- -------------------------------- ------------------------------------------------ -----------------------------------------------
Automatically                    Open an account                                  Make additional investments
                                 Not available.                                   Select "Establish Automatic Investments" on
                                                                                  your application to make automatic purchases
                                 Sell shares                                      of shares on a regular basis. You must invest
                                 If you have at least $10,000 in your             at least $600 per year per account.
                                 account, sell shares automatically by
                                 establishing Check-A-Month or                    Exchange shares
                                 Automatic Redemption.                            Send us written instructions to set up an
                                                                                  automatic exchange of your shares from one
                                                                                  American Century account to another.
</TABLE>






Special requirements for large redemptions

The fund has elected to be governed by Rule 18f-1 under the  Investment  Company
Act,  which  obligates  each  fund to make  certain  redemptions  in cash.  This
requirement applies when a shareholder redeems,  during any 90-day period, up to
the lesser of  $250,000  or 1% of the assets of the fund.  Although  we normally
will pay  redemptions  in excess of this  limitation in cash,  American  Century
reserves the right under unusual  circumstances  to honor these  redemptions  in
kind by making payment in whole or in part in readily marketable securities.

If we make payment in securities, we will value the securities,  selected by the
fund,  in the same manner as we do in computing  the fund's net asset value.  We
will provide these  securities to the redeeming  plan  participant  or financial
intermediary  in lieu of cash without prior  notice.  If your  redemption  would
exceed this limit and you would like to avoid being paid in  securities,  please
provide us with an unconditional instruction to redeem at least 15 days prior to
the date on which the redemption  transaction is to occur.  The instruction must
specify the dollar amount or number of shares to be redeemed and the date of the
transaction.  This  minimizes  the effect of the  redemption on the fund and its
remaining shareholders.

While  each  fund   reserves   the  right  to  redeem  fund  shares   through  a
redemption-in-kind,  we do not expect to exercise  this option unless a fund has
an  unusually  low  level of cash to meet  redemptions  and/or  is  experiencing
unusually  strong  demands  for its cash.  Such a demand  might be  caused,  for
example, by extreme market conditions that result in an abnormally high level of
redemption  requests  concentrated  in a short  period of time.  Absent these or
similar circumstances, we expect redemptions in excess of $250,000 to be paid in
cash in any fund with assets of more than $50 million if total  redemptions from
any one account in any 90-day  period do not exceed  one-half of 1% of the total
assets of the fund.



Investing Through Financial Intermediaries

If you  own or are  considering  purchasing  fund  shares  through  a  financial
intermediary or a retirement plan, your ability to purchase, exchange and redeem
shares will depend on the policies of that entity.  Some policy  differences may
include

o        minimum investment requirements
o        exchange policies
o        fund choices
o        cut-off time for investments

Please  contact  your  financial  intermediary  or plan  sponsor  for a complete
description of its policies.  Copies of the fund's' annual  reports,  semiannual
reports  and  Statements  of  Additional  Information  are  available  from your
intermediary or plan sponsor.

Certain  financial   intermediaries  perform  recordkeeping  and  administrative
services  for their  clients  that would  otherwise  be  performed  by  American
Century's transfer agent. In some  circumstances,  American Century will pay the
service provider a fee for performing those services.

Although  transactions in fund shares may be made directly with American Century
at no charge,  you also may purchase,  redeem and exchange  fund shares  through
financial  intermediaries that charge a transaction-based or other fee for their
services. Those charges are retained by the intermediary and are not shared with
American Century or the fund.

American Century has contracts with certain  financial  intermediaries  in which
they represent that they will track the time

**********LEFT MARGIN CALLOUTS

*    Financial intermediaries include banks, broker-dealers, insurance companies
     and investment advisors.

**********END LEFT MARGIN CALLOUTS







Share Price and Distributions

Share Price

We determine the net asset value of the fund as of the close of regular  trading
on the New York Stock  Exchange  (usually 4 p.m.  Eastern  time) on each day the
Exchange is open. On days when the Exchange is not open, we do not calculate the
net asset value.  The net asset value of the fund share is the current  value of
its  investments,  minus any  liabilities,  divided by the number of fund shares
outstanding.

If current prices of securities  owned by a fund are not readily  available from
an independent  pricing  service,  the advisor may determine their fair value in
accordance with procedures adopted by the fund's Board of Directors.  Trading of
securities  in foreign  markets may not take place on every day the  Exchange is
open.  Also,  trading in some  foreign  markets  may take place on  weekends  or
holidays when the fund's net asset value is not calculated. So, the value of the
fund's  portfolio may be affected on days when you can't  purchase or redeem its
shares.

We will price your purchase,  exchange or redemption at the net asset value next
determined after we receive your transaction request in good order.

If you  invest  in fund  shares  through  a bank,  financial  advisor  or  other
financial intermediary,  it is the responsibility of your financial intermediary
to transmit  your  purchase,  exchange  and  redemption  requests to the fund's'
transfer agent prior to the applicable  cut-off time for receiving orders and to
make  payment  for any  purchase  transaction  in  accordance  with the  fund's'
procedures  or any  contractual  arrangements  with  the  fund  or  the  fund's'
distributor in order for you to receive that day's price.

We have contractual relationships with certain financial intermediaries in which
such intermediaries  represent that they have systems to track the time at which
investment  orders are received and to  segregate  orders  received at different
times.  Based  on  these   representations,   the  funds  have  authorized  such
intermediaries  and their designees to accept purchase and redemption  orders on
the funds behalf up to the applicable  cut-off time. The funds will be deemed to
have received such orders upon acceptance by the duly  authorized  intermediary,
and such  orders  will be priced at the funds net asset  value  next  determined
after acceptance on the funds behalf by such intermediary.


Distributions

Federal tax laws require the fund to make  distributions  to its shareholders in
order  to  qualify  as a  "regulated  investment  company."  Qualification  as a
regulated investment company means that the fund will not be subject to state or
federal income tax on amounts distributed.  The distributions  generally consist
of  dividends  and  interest  received  by the fund,  as well as  capital  gains
realized  on  the  sale  of  investment  securities.   Balanced  generally  pays
distributions  of capital gains,  if any, once a year in December.  The fund may
make more frequent  distributions  if necessary to comply with Internal  Revenue
Code provisions.

Participants in employer-sponsored retirement or savings plans must reinvest all
distributions.  For shareholders  investing  through taxable  accounts,  we will
reinvest  distributions unless you elect to receive them in cash. Please consult
our Investor Services Guide for further information regarding  distributions and
your distribution options.

**********LEFT MARGIN CALLOUTS

The "net asset value" of the fund is the price of its shares.

"Capital gains" is the increase in value of a capital asset, such as stock, from
the time it is  purchased.  Tax becomes  due on capital  gains once the asset is
sold.

**********END LEFT MARGIN CALLOUTS






Taxes

The tax consequences of owning shares of the fund will vary depending on whether
you own them through a taxable or tax-deferred  account. Tax consequences result
from  distributions  by the fund of dividend and interest income it has received
and capital gains it has generated  through its  investment  activities,  and by
sales of fund shares by  investors  after the net asset value has  increased  or
decreased.

Tax-Deferred Accounts

If you purchase fund shares through a tax-deferred  account, such as an IRA or a
qualified  employer-sponsored  retirement  or savings  plan,  income and capital
gains  distributions  usually will not be subject to current taxation,  but will
accumulate in your account  under the plan on a  tax-deferred  basis.  Likewise,
moving  from one fund to  another  fund  within a plan or  tax-deferred  account
generally  will  not  cause  you to be  taxed.  For  information  about  the tax
consequences of making  purchases or withdrawals  through an employer  sponsored
retirement  or  savings  plan,  or  through  an IRA,  please  consult  your plan
administrator, your summary plan description or a professional tax advisor.

Taxable Accounts

If you own fund shares through a taxable account,  distributions by the fund and
sales by you of fund shares may cause you to be taxed.

Taxability of Distributions

Distributions  may  consist of income  earned by the fund from  sources  such as
dividends  and  interest,  or  capital  gains  generated  from  the sale of fund
investments.  Distributions of income are taxed as ordinary income. Distribution
of capital gains are classified  either as short-term or long-term and are taxed
as follows:

<TABLE>
Type of distribution            Tax rate for 15% bracket     Tax rate for 28% bracket or
                                                                        above
- ---------------------------- ------------------------------- -----------------------------
<S>                                       <C>                            <C>
Short-term capital gains          Ordinary income rate           Ordinary income rate
Long-term capital gains                   10%                            20%
</TABLE>

The tax status of any  distribution  of capital  gains is determined by how long
the fund held the  underlying  security that was sold,  not by how long you have
been  invested  in the  fund or  whether  you  reinvest  your  distributions  in
additional  shares  or take them as  income.  American  Century  will send you a
detail of the tax  status of fund  distributions  for each  calendar  year in an
annual tax statement from the fund.

Distributions may also be subject to state and local taxes.  Because  everyone's
tax situation is unique,  always  consult your tax  professional  about federal,
state and local tax consequences.

Taxes on Transactions

Your  redemptions -- including  exchanges to other American Century funds -- are
subject to capital  gains tax.  The table above can provide a general  guide for
your potential tax liability when selling or exchanging fund shares. "Short-term
capital  gains" are gains on fund  shares  held less than or equal to 12 months.
"Long-term capital gains" are gains on fund shares held for more than 12 months.
If your  shares  decrease  in value,  their sale or  exchange  will  result in a
long-term or short-term capital loss.

**********LEFT MARGIN CALLOUTS

*    Buying a Dividend

     Purchasing  fund shares in a taxable  account shortly before a distribution
     is sometimes  known as "buying a dividend." In taxable  accounts,  you must
     pay income taxes on the  distribution  whether you take the distribution in
     cash or  reinvest  it.  In  addition,  you  will  have to pay  taxes on the
     distribution whether the value of your investment  decreased,  increased or
     remained  the same after you bought the fund  shares.  The risk in buying a
     dividend is that a fund's  portfolio may build up taxable gains  throughout
     the period covered by a  distribution,  as securities are sold at a profit.
     We distribute those gains to you, after subtracting any losses, even if you
     did not own the shares when the gains occurred. Thus if you buy a dividend,
     you incur the full tax liability of the  distribution  period,  but you may
     not enjoy the full benefit of the gains realized in the fund's portfolio.

**********END LEFT MARGIN CALLOUTS

Multiple Class Information

American Century offers three classes of the fund: Investor Class, Institutional
Class and Advisor Class. The shares offered by this Prospectus are Institutional
Class  shares and are offered  primarily  to  institutional  investors,  through
institutional  distribution  channels,  such  as  employer-sponsored  retirement
plans, or through banks, broker-dealers and insurance companies.

American Century offers another class of shares that has no up-front or deferred
charges,  commissions  or 12b-1 fees.  The fund may offer a  different  class of
shares primarily to institutional investors,  through institutional distribution
channels,  such  as  employer-sponsored  retirement  plans,  or  through  banks,
broker-dealers and insurance  companies.  The other classes have different fees,
expenses,  and/or minimum investment  requirements than the Institutional Class.
The  difference in the fee  structures  among the classes is the result of their
separate  arrangements  for  shareholder and  distribution  services and not the
result of any difference in amounts  charged by the advisor for core  investment
advisory  services.  Accordingly,  the core investment  advisory expenses do not
vary by  class.  Different  fees  and  expenses  will  affect  performance.  For
additional  information  concerning  the other  classes of shares not offered by
this Prospectus,  call us at 1-800-345-3533 or contact a sales representative or
financial intermediary who offers those classes of shares.

Except as  described  below,  all  classes  of  shares of a fund have  identical
voting,  dividend,   liquidation  and  other  rights,  preferences,   terms  and
conditions.  The only  differences  among the various classes are (a) each class
may be subject to different  expenses specific to that class, (b) each class has
a different identifying designation or name, (c) each class has exclusive voting
rights with respect to matters solely  affecting such class,  (d) each class may
have different exchange privileges,  and (e) the Institutional Class may provide
for automatic  conversion  from that class into shares of the Investor  Class of
the same fund.










Performance Information of the Other Class

The  Institutional  Class of the fund was established in 1996. As a result,  the
following  financial  information  is  provided to show the  performance  of the
fund's'  original class of shares.  This class,  the Investor Class, has a total
expense  ratio  that is  0.20%  higher  than  the  Institutional  Class.  If the
Institutional Class existed during the periods presented,  its performance would
have been higher because of the lower expense.

This table  itemizes what  contributed  to the changes in share price during the
period,  and compares  this to changes over the last five fiscal years (or less,
if the share class is not five years old).

On a per-share basis, it includes:

o        share price at the beginning of the period
o        investment income and capital gains or losses
o        distributions of income and capital gains paid to shareholders
o        share price at the end of the period

It also includes some key statistics for the period:

o    total return--the  overall  percentage of return of the fund,  assuming the
     reinvestment of all distributions

o    expense ratio--operating expenses as a percentage of average net assets

o    net income  ratio--net  investment  income as a  percentage  of average net
     assets

o    portfolio  turnover--the  percentage  of  the  fund's  buying  and  selling
     activity


The following  Financial  Highlights for the fiscal years ended October 31, 1997
and 1998, have been audited by Deloitte & Touche,  independent  auditors.  Their
report is in the fund's' annual report,  which is incorporated by reference into
the Statement of Additional  Information,  and is available upon request.  Prior
years'  information  was audited by other  independent  auditors,  whose  report
thereon also is  incorporated  by  reference  into the  Statement of  Additional
Information.






<TABLE>
<CAPTION>
Balanced

                                                           1998          1997           1996          1995          1994
PER-SHARE DATA
<S>                                                  <C>            <C>            <C>             <C>            <C>
Net Asset Value, Beginning of Year
                                                       ------------- -------------- ------------- ------------- --------------
Income from Investment Operations
   Net Investment Income (dividends)
   Net Realized and Unrealized Gain (Loss) on
   Investment Transactions
                                                       ------------- -------------- ------------- ------------- --------------
   Total From Investment Operations
                                                       ------------- -------------- ------------- ------------- --------------
Less Distributions
   From Net Investment Income (dividends)
                                                       ------------- -------------- ------------- ------------- --------------
                                                       ------------- -------------- ------------- ------------- --------------
Net Asset Value, End of Year
                                                       ------------- -------------- ------------- ------------- --------------
Total Return(1)
RATIOS/SUPPLEMENTAL DATA
Ratio of Operating Expenses to Average Net Assets
Ratio of Net Investment Income to Average Net Assets
Net Assets, End of Year (in thousands)
</TABLE>

(1) Total return assumes reinvestment of dividends and capital gains, if any.








More information about the funds is contained in these documents:

Annual and Semiannual Reports.  These reports contain more information about the
fund's  investments  and the market  conditions and investment  strategies  that
significantly  affected the fund's  performance during the most recent six-month
fiscal period.

Statement of Additional  Information.  The SAI contains a more  detailed,  legal
description  of the funds'  operations,  investment  restrictions,  policies and
practices. The SAI is incorporated by reference into this Prospectus. This means
that it is legally part of this Prospectus, even if you don't request a copy.

You also can get information about the funds (including the SAI) from the SEC.

v        In person.        SEC Public Reference Room
                           Washington, D.C.
                           Call 1-800-SEC-0330 for location and hours.

v        On the internet.  www.sec.gov.

v        By mail.          Public Reference Section
                           Washington, D.C.
                           20549-6009
                           The SEC will charge a fee for  copying the  documents
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American Century Investments
P.O. Box 419200
Kansas City, Missouri 64141-6200

Investor Services
1-800-345-2021 or 816-531-5575

Automated Information Line
1-800-345-8765

Fax
816-340-7962

www.americancentury.com

Telecommunications Device for the Deaf
1-800-634-4113 or 816-444-3485

Corporate, Not-for-Profit, Keogh,
SEP-, SARSEP-, SIMPLE-IRA and 403(b) Services
1-800-345-3533

Investment Company Act File No. 811-0816
<PAGE>
STATEMENT OF ADDITIONAL INFORMATION

February 26, 1999

AMERICAN CENTURY MUTUAL FUNDS, INC.

Growth
Ultra
Select
Vista
Heritage
Balanced
Tax-Managed Value
Giftrust
New Opportunities
Limited-Term Bond
Intermediate-Term Bond
Bond
High-Yield

This  Statement of Additional  Information  adds to the discussion in the funds'
Prospectuses,  dated  February 26, 1999,  but is not a prospectus.  If you would
like a copy of one or more of the Prospectuses,  please contact us at one of the
addresses or phone numbers listed on the back cover or visit American  Century's
Web site at www.americancentury.com.

This  Statement of  Additional  Information  incorporates  by reference  certain
information that appears in the funds' annual and semiannual reports,  which are
delivered to all  shareholders.  You may obtain a free copy of the funds' annual
or semiannual reports by calling 1-800-345-2021.


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


Distributed by Funds Distributor, Inc.





Table of Contents
THE FUNDS' HISTORY                                      1
FUND INVESTMENT GUIDELINES

DETAILED INFORMATION ABOUT THE FUNDS                    3
   Investment Strategies and Risks                      3
   Investment Policies                                 13
   Portfolio Turnover                                  14

MANAGEMENT                                             15
The Board of Directors                                 XX
Officer                                                XX
THE FUNDS' BIGGEST SHAREHOLDERS                        18
SERVICE PROVIDERS                                      18
   Investment Advisor                                  18
   Distributor                                         20
   Transfer Agent and Administrator                    21
   Other Service Providers                             21

BROKERAGE ALLOCATION                                   21
INFORMATION ABOUT FUND SHARES                          22
MULTIPLE CLASS STRUCTURE
BUYING AND SELLING FUND SHARES                         22
VALUATION OF A FUND'S SECURITIES                       22
MULTIPLE CLASS PERFORMANCE INFORMATION
TAXES                                                  23
HOW FUND PERFORMANCE INFORMATION IS CALCULATED         26
FINANCIAL STATEMENTS                                   27
EXPLANATION OF FIXED INCOME SECURITIES RATINGS         27
     Bond Ratings                                      27
     Commercial Paper Ratings                          28
     Note Ratings                                      28






THE FUNDS' HISTORY

American Century Mutual Funds, Inc. ("ACMF" or the "registrant") is a registered
open-end management  investment company that was organized in 1957 as a Delaware
corporation  under the name  Twentieth  Century  Investors,  Inc.  In 1990,  the
company  reorganized as a Maryland  corporation,  and in January 1997 it changed
its name to American Century Mutual Funds.
Inc.

Each fund  described in this  Statement of Additional  Information is a separate
series  of ACMF and  operates  for many  purposes  as if it were an  independent
company. Each fund has its own investment objective,  strategy, management team,
assets, tax  identification  and stock  registration  number. A fund's inception
date is the first date its initial class of shares was offered to the public.

- ------------------------ --------------------------- ----------------------
FUND-CLASS                     TICKER SYMBOL            INCEPTION DATE
- ------------------------ --------------------------- ----------------------
Growth                             TWCGX                   10/31/58
Ultra                              TWCUX                   11/2/81
Select                             TWCIX                   10/31/58
Vista                              TWCVX                   11/25/83
Heritage                           TWHIX                   11/10/87
Balanced                           TWBIX                   11/20/88
Tax-Managed Value                   N/A                02/26/99 (est.)
Giftrust                           TWGTX                   11/25/83
New Opportunities                  TWNOX                   12/26/96
Limited-Term Bond                   N/A                     3/1/94
Intermediate-Term Bond             TWITX                    3/1/94
Bond                               TWLBX                    3/2/87
High-Yield                         ABHIX                   9/30/97
- ------------------------ --------------------------- ----------------------

FUND INVESTMENT GUIDELINES

This  section  explains  the  extent  to  which  American   Century   Investment
Management,  Inc.  (the  "advisor")  can use  various  investment  vehicles  and
strategies  in  managing  a  fund's  assets.   Descriptions  of  the  investment
techniques  and risks  associated  with each appear in the section,  "Investment
Strategies  and  Risks,"  which  begins  on page XX.  In the case of the  funds'
principal investment  strategies,  these descriptions elaborate upon discussions
contained in the Prospectuses.

Each  fund is a  diversified  open-end  investment  company  as  defined  in the
Investment Company Act of 1940 (the Investment Company Act). "Diversified" means
that,  with respect to 75% of its total  assets,  each fund will not invest more
than 5% of its total assets in the securities of a single issuer.

To meet federal tax  requirements for  qualification  as a regulated  investment
company,  each fund  must  limit  its  investments  so that at the close of each
quarter  of its  taxable  year (1) no more  than  25% of its  total  assets  are
invested in the  securities of a single issuer (other than the U.S government or
a regulated  investment  company),  and (2) with  respect to at least 50% of its
total assets, no more than 5% of its total assets are invested in the securities
of a single issuer.

*GROWTH, ULTRA, SELECT, VISTA, HERITAGE, GIFTRUST AND NEW OPPORTUNITIES

In  general,   within  the   restrictions   outlined  here  and  in  the  funds'
Prospectuses,  the advisor has broad powers to decide how to invest fund assets,
including the power to hold them uninvested.

Investments are varied according to what is judged  advantageous  under changing
economic conditions. It is the advisor's policy to retain maximum flexibility in
management without restrictive provisions as to the proportion of one or another
class of securities  that may be held,  subject to the  investment  restrictions
described  below.  It is the advisor's  intention  that each fund will generally
consist of domestic and foreign common stocks and equity equivalent  securities.
However,  subject to the specific  limitations  applicable to a fund, the funds'
management  teams may invest the assets of each fund in varying amounts in other
instruments,  such as those  reflected  in Table 1 below,  when such a course is
deemed  appropriate  in order to  attempt to attain  its  investment  objective.
Senior securities that, in the opinion of the manager, are high-grade issues may
also be  purchased  for  defensive  purposes.  [Note:  The  above  statement  of
fundamental  policy gives the advisor  authority to invest in  securities  other
than common stocks and traditional debt and convertible issues. Though the funds
have not made such  investments  in the past,  the  manager may invest in master
limited  partnerships (other than real estate  partnerships) and royalty trusts,
which are traded on domestic stock  exchanges when such  investments  are deemed
appropriate for the attainment of the funds' investment objectives.]

So long as a sufficient  number of such  securities are  available,  the manager
intends to keep the funds fully invested in stocks that demonstrate accelerating
growth,  regardless  of  the  movement  of  stock  prices,  generally.  In  most
circumstances, the funds' actual level of cash and cash equivalents will be less
than 10%.  The  manager  may use S&P 500 Index  futures  as a way to expose  the
funds' cash assets to the market, while maintaining  liquidity.  As mentioned in
the Prospectuses,  the managers may not leverage the funds' portfolios, so there
is no  greater  market  risk to the  funds  than if they  purchase  stocks.  See
"SHORT-TERM   INVESTMENTS,"  page  XX,  "FUTURES  AND  OPTIONS,"  page  XX,  and
"DERIVATIVE SECURITIES," page XX.

*BALANCED

In general,  within the restrictions outlined here and in the fund's Prospectus,
the advisor has broad powers to decide how to invest fund assets,  including the
power to hold them uninvested.  As a matter of fundamental  policy,  the manager
will invest approximately 60% of the Balanced portfolio in equity securities and
the remainder in bonds and other fixed income securities.  The equity portion of
the fund generally will be invested in equity securities of companies comprising
the 1500 largest  publicly  traded  companies in the United  States.  The fund's
investment  approach may cause its equity portion to be more heavily invested in
some industries than in others.  However, it may not invest more than 25% of its
total assets in companies  whose principal  business  activities are in the same
industry. In addition, as a "diversified" investment company, its investments in
a single issue are  limited,  as described  under "Fund  Investment  Guidelines"
above.  The fund  managers may also  purchase  foreign  securities,  convertible
securities, stock index futures contracts and similar securities, and short-term
securities. See Table 1, below.

The fixed income portion of the fund generally will be invested in a diversified
portfolio  of  high-grade  government,   corporate,  asset  backed  and  similar
securities. There are no maturity restrictions on the fixed income securities in
which the fund  invests,  but  under  normal  conditions  the  weighted  average
maturity  for the  fixed  income  portion  of the fund  will be in the 3-10 year
range.  The manager will actively  manage the portfolio,  adjusting the weighted
average  portfolio  maturity in response to expected  changes in interest rates.
During periods of rising interest rates, a shorter weighted average maturity may
be adopted in order to reduce  the effect of bond price  declines  on the fund's
net asset  value.  When  interest  rates are falling and bond prices  rising,  a
longer weighted average portfolio  maturity may be adopted.  The restrictions on
the quality of the fixed income  securities  the fund may purchase are described
in the  Prospectus.  For a  description  of the fixed income  securities  rating
system,  see "AN EXPLANATION OF FIXED INCOME SECURITIES  RATINGS,"  beginning on
page XX of this SAI.

*TAX-MANAGED VALUE FUND

The fund managers of Tax Managed Value will invest primarily in stocks of medium
to large  companies  that the managers  believe are  undervalued  at the time of
purchase.  The fund will  usually  purchase  common  stocks of U.S.  and foreign
companies,  but they can purchase  other types of securities,  as well,  such as
domestic and foreign preferred stocks, convertible securities, equity equivalent
securities, notes, bonds and other debt securities.

*LIMITED-TERM BOND, INTERMEDIATE-TERM BOND AND BOND

To achieve their objectives,  the funds may invest in diversified  portfolios of
high- and medium-grade debt securities  payable in U.S.  currency.  Under normal
market  conditions,  each  fund will  maintain  at least 65% of the value of its
total assets in investment-grade bonds and other debt instruments.  Under normal
market conditions, each of the funds may invest up to 35% of its assets, and for
temporary  defensive  purposes,   up  to  100%  of  its  assets,  in  short-term
securities.

The funds may invest in  securities  that at the time of purchase are rated by a
nationally  recognized  statistical rating organization or, if not rated, are of
equivalent  investment  quality  as  determined  by  the  manager,  as  follows:
short-term  notes  within the two highest  categories,  e.g.,  at least MIG-2 by
Moody's Investor Services ("Moody's") or SP-2 by Standard and Poor's Corporation
("S&P");  corporate,  sovereign government,  and municipal bonds within the four
highest  categories  (for  example,  at  least  Baa by  Moody's  or BBB by S&P);
securities   of  the   United   States   government   and   its   agencies   and
instrumentalities  (described  below);  other types of securities rated at least
P-2 by Moody's or A-2 by S&P.

The manager will actively manage the portfolios,  adjusting the weighted average
portfolio  maturities  as necessary in response to expected  changes in interest
rates. During periods of rising interest rates, the weighted average maturity of
a fund may be moved to the shorter end of its maturity  range in order to reduce
the effect of bond price  declines on the fund's net asset value.  When interest
rates are falling and bond prices are rising,  the  weighted  average  portfolio
maturity may be moved toward the longer end of its maturity range.

The  government  securities  in which the funds may invest  include:  (1) direct
obligations of the United States, such as Treasury bills, notes and bonds, which
are  supported  by the full  faith and  credit  of the  United  States,  and (2)
obligations  (including  mortgage-related  securities)  issued or  guaranteed by
agencies  and  instrumentalities  of  the  United  States  government  that  are
established  under an act of Congress.  The securities of some of these agencies
and instrumentalities, such as the Government National Mortgage Association, are
guaranteed  as to  principal  and  interest  by the  U.S.  Treasury,  and  other
securities  are  supported by the right of the issuer,  such as the Federal Home
Loan Banks,  to borrow from the Treasury.  Other  obligations,  including  those
issued by the Federal  National  Mortgage  Association and the Federal Home Loan
Mortgage Corporation, are supported only by the credit of the instrumentality.

Mortgage-related securities in which the funds may invest include collateralized
mortgage   obligations   ("CMOs")   issued   by  a  United   States   agency  or
instrumentality.  A CMO is a debt security that is collateralized by a portfolio
or pool of mortgages or mortgage-backed  securities.  The issuer's obligation to
make  interest  and  principal  payments  is secured by the  underlying  pool or
portfolio of mortgages or securities.

The  market  value of  mortgage-related  securities,  even  those  in which  the
underlying  pool of mortgage  loans is guaranteed as to the payment of principal
and interest by the United  States  government,  is not insured.  When  interest
rates rise, the market value of those securities may decrease in the same manner
as other debt,  but when  interest  rates  decline,  their  market value may not
increase as much as other debt  instruments  because of the  prepayment  feature
inherent in the  underlying  mortgages.  If such  securities  are purchased at a
premium,  the fund will suffer a loss if the obligation is prepaid.  Prepayments
will be reinvested at prevailing rates,  which may be less than the rate paid by
the prepaid obligation.

For the purpose of determining the weighted  average  portfolio  maturity of the
funds, the manager shall consider the maturity of a mortgage-related security to
be the remaining expected average life of the security. The average life of such
securities is likely to be  substantially  less than the original  maturity as a
result of prepayments of principal on the underlying mortgages,  especially in a
declining  interest rate  environment.  In  determining  the remaining  expected
average life, the manager makes assumptions  regarding  repayments on underlying
mortgages.  In a rising interest rate environment,  those prepayments  generally
decrease,  and may decrease below the rate of prepayment  assumed by the manager
when purchasing those securities. Such slowdown may cause the remaining maturity
of those securities to lengthen,  which will increase the relative volatility of
those securities and, hence, the fund holding the securities.  See "FUNDAMENTALS
OF FIXED INCOME INVESTING," in the funds' Prospectus.

As  noted,  each  fund may  invest up to 35% of its  assets,  and for  temporary
defensive  purposes as  determined  by the manager,  up to 100% of its assets in
short-term securities.  See "SHORT-TERM  SECURITIES" beginning at page XX. These
investments  must meet the rating  standards for the funds. To the extent a fund
assumes a defensive position, the weighted average maturity of its portfolio may
not fall  within  the  ranges  stated  for the fund.  The funds may buy and sell
interest rate futures contracts relating to debt securities and bond indexes and
may  write  and buy put and call  options  relating  to  interest  rate  futures
contracts for the purpose of achieving their investment objectives. See "FUTURES
AND OPTIONS" beginning on page XX.

*HIGH-YIELD

The fund invests  primarily in  lower-rated,  higher yielding  corporate  bonds,
debentures and notes,  which are subject to greater credit risk and consequently
offer higher yield. The fund may also purchase

*        government securities,
*        zero-coupon, step-coupon and pay-in-kind securities,
*        convertible securities,
*        loan interests
*        common stock or other equity-related securities (limited to 20% of fund
         assets),
*        short-term securities

Up to 40% of the fund's assets may be invested in foreign  securities.  The fund
may also purchase and sell interest rate futures  contracts and related options.
See "FUTURES AND OPTIONS."

The securities purchased by the fund generally will be rated in the lower rating
categories of recognized  rating  agencies,  as low as Caa by Moody's  Investors
Services,  Inc.  ("Moody's") or D by Standard & Poor's Ratings Group ("S&P"), or
in unrated securities that the manager deems of comparable quality. The fund may
hold  securities  with  higher  ratings  when  the  yield  differential  between
low-rated  and  higher-rated  securities  narrows  and the  risk of loss  may be
reduced substantially with only a relatively small reduction in yield.

Issuers  of  high-yield  securities  are more  vulnerable  to real or  perceived
economic  changes (such as an economic  downturn or a prolonged period of rising
interest  rates),  political  changes or adverse  developments  specific  to the
issuer.  Adverse  economic,  political  or other  developments  may  impair  the
issuer's  ability  to  service  principal  and  interest  obligations,  to  meet
projected business goals and to obtain additional  financing.  In the event of a
default,  the fund would experience a reduction of its income and could expect a
decline in the market value of the defaulted securities.

The market for lower quality securities is generally less liquid than the market
for higher quality  securities.  Adverse  publicity and investor  perceptions as
well as new or  proposed  laws may also  have a greater  negative  impact on the
market for lower quality  securities.  Sovereign debt of foreign  governments is
generally  rated by  country.  Because  these  ratings do not take into  account
individual factors relevant to each issue and may not be updated regularly,  the
manager may elect to treat such securities as unrated debt.

The fund will not purchase securities rated lower than B by both Moody's and S&P
unless,  immediately  after such purchase,  no more than 10% of its total assets
are invested in such securities.

ZERO-COUPON, STEP-COUPON AND PAY-IN-KIND SECURITIES

Zero-coupon,  step-coupon and pay-in-kind securities are debt securities that do
not make regular cash interest payments.  Zero-coupon and step-coupon securities
are sold at a deep  discount to their face  value.  Pay-in-kind  securities  pay
interest through the issuance of additional securities.  Because such securities
do not pay current cash income,  the price of these  securities  can be volatile
when interest rates  fluctuate.  While these  securities do not pay current cash
income, federal income tax law requires the holders of zero-coupon,  step-coupon
and  pay-in-kind  securities  to include in income  each year the portion of the
original  issue  discount and other noncash  income on such  securities  accrued
during that year.  In order to continue to qualify for treatment as a "regulated
investment  company"  under the Internal  Revenue Code and avoid certain  excise
tax, the fund may be required to dispose of other  portfolio  securities,  which
may occur in periods of adverse market prices, in order to generate cash to meet
these distribution requirements.

LOAN INTERESTS

Loan  interests  are interests in amounts owed by a corporate,  governmental  or
other borrower to lenders or lending syndicates. Loan interests purchased by the
fund may have a  maturity  of any number of days or years,  and may be  acquired
from U.S. and foreign banks,  insurance  companies,  finance  companies or other
financial  institutions  that  have  made  loans  or are  members  of a  lending
syndicate or from the holders of loan interests. Loan interests involve the risk
of loss in case of default or  bankruptcy  of the  borrower  and, in the case of
participation interests,  involve a risk of insolvency of the agent lending bank
or other financial intermediary.  Loan interests are not rated by any nationally
recognized  securities  ratings  organization  and are, at present,  not readily
marketable and may be subject to contractual restrictions on resale.

<TABLE>
                                                          Table 1
- --------------------------- ----------- ----------- --------- ---------------- --------------- ---------- ------------ ------------
                                                               Limited-Term
                                                                   Bond,
                              Growth                          Intermediate-Term                                        Tax-Managed
                              Ultra       Vista     High        Bond, Bond          New                                   Value
                              Select     Heritage    Yield                     Opportunities   Giftrust    Balanced
- --------------------------- ----------- ----------- --------- ---------------- --------------- ---------- ------------ ------------
- --------------------------- ----------- ----------- --------- ---------------- --------------- ---------- ------------ ------------
<S>                             <C>        <C>        <C>           <C>             <C>           <C>         <C>            
Foreign Securities              X           X          X             X               X             X           X            X
- --------------------------- ----------- ----------- --------- ---------------- --------------- ---------- ------------ ------------
- --------------------------- ----------- ----------- --------- ---------------- --------------- ---------- ------------ ------------
Forward Currency Exchange       X           X          X            ???              X             X           X            X
Contracts
- --------------------------- ----------- ----------- --------- ---------------- --------------- ---------- ------------ ------------
- --------------------------- ----------- ----------- --------- ---------------- --------------- ---------- ------------ ------------
Convertible Securities                                 X                                                       X            X
- --------------------------- ----------- ----------- --------- ---------------- --------------- ---------- ------------ ------------
- --------------------------- ----------- ----------- --------- ---------------- --------------- ---------- ------------ ------------
Futures & Options               X           X          X             X               X             X           X            X
- --------------------------- ----------- ----------- --------- ---------------- --------------- ---------- ------------ ------------
- --------------------------- ----------- ----------- --------- ---------------- --------------- ---------- ------------ ------------
Derivative Securities           X           X          X             X               X             X           X            X
- --------------------------- ----------- ----------- --------- ---------------- --------------- ---------- ------------ ------------
- --------------------------- ----------- ----------- --------- ---------------- --------------- ---------- ------------ ------------
Repurchase Agreement                                  ???            X               X             X           X            X
- --------------------------- ----------- ----------- --------- ---------------- --------------- ---------- ------------ ------------
- --------------------------- ----------- ----------- --------- ---------------- --------------- ---------- ------------ ------------
Municipal Notes                                                                                                             X
- --------------------------- ----------- ----------- --------- ---------------- --------------- ---------- ------------ ------------
- --------------------------- ----------- ----------- --------- ---------------- --------------- ---------- ------------ ------------
Municipal Bonds                                                                                                             X
- --------------------------- ----------- ----------- --------- ---------------- --------------- ---------- ------------ ------------
- --------------------------- ----------- ----------- --------- ---------------- --------------- ---------- ------------ ------------
Variable- and Floating-Rate                                                                                                 X
Obligations
- --------------------------- ----------- ----------- --------- ---------------- --------------- ---------- ------------ ------------
- --------------------------- ----------- ----------- --------- ---------------- --------------- ---------- ------------ ------------
Obligations with Term Puts                                                                                                  X
Attached
- --------------------------- ----------- ----------- --------- ---------------- --------------- ---------- ------------ ------------
- --------------------------- ----------- ----------- --------- ---------------- --------------- ---------- ------------ ------------
Tender Option Bonds                                                                                                         X
- --------------------------- ----------- ----------- --------- ---------------- --------------- ---------- ------------ ------------
- --------------------------- ----------- ----------- --------- ---------------- --------------- ---------- ------------ ------------
When-Issued and Forward         X           X          X             X               X             X           X            X
Commitment Agreements
- --------------------------- ----------- ----------- --------- ---------------- --------------- ---------- ------------ ------------
- --------------------------- ----------- ----------- --------- ---------------- --------------- ---------- ------------ ------------
Inverse Floaters                                      ???                                                                   X
- --------------------------- ----------- ----------- --------- ---------------- --------------- ---------- ------------ ------------
- --------------------------- ----------- ----------- --------- ---------------- --------------- ---------- ------------ ------------
Restricted and Illiquid         X           X          X            15%             15%            X          15%           X
Securities
- --------------------------- ----------- ----------- --------- ---------------- --------------- ---------- ------------ ------------
- --------------------------- ----------- ----------- --------- ---------------- --------------- ---------- ------------ ------------
Other Investment Companies                            ???                                                                   X
- --------------------------- ----------- ----------- --------- ---------------- --------------- ---------- ------------ ------------
- --------------------------- ----------- ----------- --------- ---------------- --------------- ---------- ------------ ------------
Short Sales                     X           X         ???                            X             X           X            X
- --------------------------- ----------- ----------- --------- ---------------- --------------- ---------- ------------ ------------
- --------------------------- ----------- ----------- --------- ---------------- --------------- ---------- ------------ ------------
Portfolio Lending                                     ???                                                                   X
- --------------------------- ----------- ----------- --------- ---------------- --------------- ---------- ------------ ------------
- --------------------------- ----------- ----------- --------- ---------------- --------------- ---------- ------------ ------------
Investments in Companies        5%         10%        15%           5%              10%           10%         5%            X
with Limited Operating 
History
- --------------------------- ----------- ----------- --------- ---------------- --------------- ---------- ------------ ------------
- --------------------------- ----------- ----------- --------- ---------------- --------------- ---------- ------------ ------------
Short-Term Securities           X           X          X             X               X             X           X            X
- --------------------------- ----------- ----------- --------- ---------------- --------------- ---------- ------------ ------------
</TABLE>


DETAILED INFORMATION ABOUT THE FUNDS
INVESTMENT STRATEGIES AND RISKS

This section  describes  various  investment  vehicles and  techniques  that the
advisor  can use in  managing  a  fund's  assets.  It  also  details  the  risks
associated  with each,  because each  technique  contributes to a fund's overall
risk profile.

FOREIGN SECURITIES

Each fund may invest in the  securities of foreign  issuers,  including  foreign
governments,  when these securities meet its standards of selection.  Securities
of foreign issuers may trade in the U.S. or foreign securities markets.

The chart  below  shows the  portion of each  fund's  total  assets  that may be
invested in the securities of foreign issuers.

- --------------------------------------- ----------------------------------------

                      FUND                        PERCENTAGE PERMITTED IN
                                                     FOREIGN SECURITIES
- --------------------------------------- ----------------------------------------
- --------------------------------------- ----------------------------------------
Growth                                  Unlimited
- --------------------------------------- ----------------------------------------
- --------------------------------------- ----------------------------------------
Ultra                                   Unlimited
- --------------------------------------- ----------------------------------------
- --------------------------------------- ----------------------------------------
Select                                  Unlimited
- --------------------------------------- ----------------------------------------
- --------------------------------------- ----------------------------------------
Vista                                   Unlimited
- --------------------------------------- ----------------------------------------
- --------------------------------------- ----------------------------------------
Heritage                                Unlimited
- --------------------------------------- ----------------------------------------
- --------------------------------------- ----------------------------------------
Balanced                                Unlimited
- --------------------------------------- ----------------------------------------
- --------------------------------------- ----------------------------------------
Tax-Managed Value                       Unlimited
- --------------------------------------- ----------------------------------------
- --------------------------------------- ----------------------------------------
Giftrust                                Unlimited
- --------------------------------------- ----------------------------------------
- --------------------------------------- ----------------------------------------
New Opportunities                       Unlimited
- --------------------------------------- ----------------------------------------
- --------------------------------------- ----------------------------------------
Limited-Term Bond                       Unlimited
- --------------------------------------- ----------------------------------------
- --------------------------------------- ----------------------------------------
Intermediate-Term Bond                  Unlimited
- --------------------------------------- ----------------------------------------
- --------------------------------------- ----------------------------------------
Bond                                    Unlimited
- --------------------------------------- ----------------------------------------
- --------------------------------------- ----------------------------------------
High Yield                              40%
- --------------------------------------- ----------------------------------------

Investments in foreign  securities may present  certain risks,  including  those
resulting from  fluctuations in currency  exchange rates,  future  political and
economic  developments,  clearance and settlement risk, reduced  availability of
public information concerning issuers, and the fact that foreign issuers are not
generally  subject to  uniform  accounting,  auditing  and  financial  reporting
standards or to other regulatory practices and requirements  comparable to those
applicable to domestic issuers.

Because most foreign  securities  are  denominated in non-U.S.  currencies,  the
investment  performance  of the fund  could be  affected  by  changes in foreign
currency  exchange  rates.  The value of a fund's assets  denominated in foreign
currencies will increase or decrease in response to fluctuations in the value of
those foreign  currencies  relative to the U.S. dollar.  Currency exchange rates
can be  volatile  at times in  response  to supply  and  demand in the  currency
exchange markets, international balances of payments, governmental intervention,
speculation, and other political and economic conditions.

Each fund may purchase and sell foreign  currency on a spot basis and may engage
in forward currency  contracts,  currency  options and futures  transactions for
hedging or any other lawful purpose. (See ""Derivative Securities" on page XX.)

FORWARD CURRENCY EXCHANGE CONTRACTS

The funds conduct their foreign currency exchange  transactions either on a spot
(i.e.,  cash) basis at the spot rate prevailing in the foreign currency exchange
market, or through entering into forward foreign currency exchange  contracts to
purchase or sell foreign currencies.

The funds expect to use forward contracts under two circumstances:

(1)      When the  advisor  wishes  to  "lock  in" the  U.S.  dollar  price of a
         security when a fund is purchasing or selling a security denominated in
         a  foreign  currency,  the fund  would be able to enter  into a forward
         contract to do so; or
(2)      When the advisor  believes  that the currency of a  particular  foreign
         country may suffer a substantial  decline  against the U.S.  dollar,  a
         fund would be able to enter  into a forward  contract  to sell  foreign
         currency for a fixed U.S. dollar amount approximating the value of some
         or all of its  portfolio  securities  either  denominated  in, or whose
         value is tied to, such foreign currency.

As to the first  circumstance,  when a fund enters into a trade for the purchase
or sale of a security denominated in a foreign currency,  it may be desirable to
establish (lock in) the U.S.  dollar cost or proceeds.  By entering into forward
contracts  in U.S.  dollars  for the  purchase  or  sale of a  foreign  currency
involved in an underlying security transaction, the fund will be able to protect
itself against a possible loss between trade and settlement dates resulting from
the adverse change in the  relationship  between the U.S.  dollar at the subject
foreign currency.

Under the second circumstance,  when the advisor believes that the currency of a
particular country may suffer a substantial decline relative to the U.S. dollar,
a fund could enter into a foreign contract to sell for a fixed dollar amount the
amount  in  foreign  currencies  approximating  the  value of some or all of its
portfolio  securities  either  denominated  in, or whose  value is tied to, such
foreign currency.  The fund will place cash or high-grade liquid securities in a
separate  account  with its  custodian  in an  amount  equal to the value of the
forward  contracts entered into under the second  circumstance.  If the value of
the  securities  placed in the separate  account  declines,  additional  cash or
securities  will be placed in the  account on a daily basis so that the value of
the account  equals the amount of the fund's  commitments  with  respect to such
contracts.

The  precise  matching  of  forward  contracts  in the  amounts  and  values  of
securities  involved  generally would not be possible since the future values of
such foreign  currencies will change as a consequence of market movements in the
values of those securities between the date the forward contract is entered into
and the date it matures.  Predicting  short-term  currency  market  movements is
extremely difficult, and the successful execution of short-term hedging strategy
is highly uncertain. The advisor does not intend to enter into such contracts on
a regular basis.  Normally,  consideration  of the prospect for currency parties
will be incorporated into the long-term  investment  decisions made with respect
to overall diversification strategies.  However, the advisor believes that it is
important  to have  flexibility  to enter into such  forward  contracts  when it
determines that a fund's best interests may be served.

Generally,  a fund will not enter into a forward contract with a term of greater
than one year. At the maturity of the forward contract, the fund may either sell
the  portfolio  security and make  delivery of the foreign  currency,  or it may
retain the security and terminate the obligation to deliver the foreign currency
by purchasing an  "offsetting"  forward  contract with the same currency  trader
obligating  the fund to purchase,  on the same maturity date, the same amount of
the foreign currency.

It is  impossible  to  forecast  with  absolute  precision  the market  value of
portfolio securities at the expiration of the forward contract.  Accordingly, it
may be necessary for a fund to purchase  additional foreign currency on the spot
market  (and bear the  expense  of such  purchase)  if the  market  value of the
security is less than the amount of foreign  currency  the fund is  obligated to
deliver and if a decision is made to sell the security and make  delivery of the
foreign currency the fund is obligated to deliver.

CONVERTIBLE SECURITIES

A convertible security is a fixed-income  security that offers the potential for
capital  appreciation  through a  conversion  feature that enables the holder to
convert  the  fixed-income  security  into a stated  number  of shares of common
stock.  As fixed  income  securities,  convertible  securities  provide a stable
stream of income,  with  generally  higher  yields than common  stocks.  Because
convertible  securities  offer the  potential to benefit  from  increases in the
market price of the underlying common stock, however, they generally offer lower
yields than  non-convertible  securities of similar quality. Of course, like all
fixed income securities, there can be no assurance of current income because the
issuers of the  convertible  securities  may  default on their  obligations.  In
addition, there can be no assurance of capital appreciation because the value of
the underlying common stock will fluctuate.

Convertible   securities   generally  are  subordinated  to  other  similar  but
non-convertible  securities of the same issuer,  although  convertible bonds, as
corporate debt  obligations,  enjoys seniority in right of payment to all equity
securities,  and  convertible  preferred  stock is senior to common stock of the
same  issuer.  Because  of  the  subordination  feature,  however,   convertible
securities typically have lower ratings than similar non-convertible securities.

Unlike a convertible security that is a single security, a synthetic convertible
security  is  comprised  of  two  distinct  securities  that  together  resemble
convertible securities in certain respects. Synthetic convertible securities are
created by combining  non-convertible bonds or preferred stocks with warrants or
stock call options. The options that will form elements of synthetic convertible
securities  will  be  listed  on  a  securities  exchange  or  on  the  National
Association  of  Securities  Dealers  Automated   Quotation  Systems.   The  two
components  of a  synthetic  convertible  security,  which  will be issued  with
respect to the same  entity,  generally  are not  offered as a unit,  and may be
purchased  and  sold  by the  fund at  different  times.  Synthetic  convertible
securities  differ from convertible  securities in certain  respects,  including
that each component of a synthetic  convertible  security has a separate  market
value and responds  differently to market  fluctuations.  Investing in synthetic
convertible  securities  involves  the risk  normally  involved  in holding  the
securities comprising the synthetic convertible security.

SHORT SALES

A fund may  engage in short  sales if, at the time of the short  sale,  the fund
owns or has the right to acquire securities equivalent in kind and amount to the
securities being sold short.

In a short sale, the seller does not immediately deliver the securities sold and
is said to have a short position in those securities  until delivery occurs.  To
make delivery to the  purchaser,  the executing  broker  borrows the  securities
being  sold  short  on  behalf  of the  seller.  While  the  short  position  is
maintained,  the seller  collateralizes its obligation to deliver the securities
sold  short in an  amount  equal  to the  proceeds  of the  short  sale  plus an
additional  margin amount  established  by the Board of Governors of the Federal
Reserve.  If a fund  engages in a short sale,  the  collateral  account  will be
maintained by the fund's custodian.  While the short sale is open, the fund will
maintain in a segregated  custodial account an amount of securities  convertible
into, or  exchangeable  for, such equivalent  securities at no additional  cost.
These securities would constitute the fund's long position.

A fund may make a short  sale,  as  described  above,  when it wants to sell the
security  it owns at a  current  attractive  price,  but  also  wishes  to defer
recognition  of gain or loss for  federal  income  tax  purposes.  There will be
certain  additional  transaction costs associated with short sales, but the fund
will endeavor to offset these costs with income from the  investment of the cash
proceeds of short sales.

PORTFOLIO LENDING

In order to realize additional income, a fund may lend its portfolio securities.
Such loans may not exceed  one-third  of the fund's net assets  valued at market
except (i)  through the  purchase  of debt  securities  in  accordance  with its
investment  objective,   policies  and  limitations,  or  (ii)  by  engaging  in
repurchase agreements with respect to portfolio securities.

DERIVATIVE SECURITIES

To the extent permitted by its investment  objectives and policies,  each of the
funds may invest in  securities  that are commonly  referred to as  "derivative"
securities.  Generally,  a derivative  is a financial  arrangement  the value of
which is based on, or "derived" from, a traditional  security,  asset, or market
index.   Certain  derivative   securities  are  more  accurately   described  as
"index/structured"   securities.   Index/structured  securities  are  derivative
securities whose value or performance is linked to other equity securities (such
as depositary receipts),  currencies, interest rates, indices or other financial
indicators ("reference indices").

Some "derivatives" such as  mortgage-related  and other asset-backed  securities
are in many  respects  like  any  other  investment,  although  they may be more
volatile or less liquid than more traditional debt securities.

There are many  different  types of  derivatives  and many different ways to use
them. Futures and options are commonly used for traditional  hedging purposes to
attempt to protect a fund from exposure to changing  interest rates,  securities
prices,  or  currency  exchange  rates  and for cash  management  purposes  as a
low-cost method of gaining  exposure to a particular  securities  market without
investing directly in those securities.

No fund may invest in a derivative  security  unless the reference  index or the
instrument  to which it  relates is an  eligible  investment  for the fund.  For
example,  a security whose  underlying value is linked to the price of oil would
not be a  permissible  investment  since the funds may not invest in oil and gas
leases or futures.

The return on a derivative  security may  increase or decrease,  depending  upon
changes in the reference index or instrument to which it relates.

There are a range of risks associated with derivative investments, including:

*    the risk that the underlying security, interest rate, market index or other
     financial  asset  will  not move in the  direction  the  portfolio  manager
     anticipates;
*    the  possibility  that  there may be no  liquid  secondary  market,  or the
     possibility that price  fluctuation  limits may be imposed by the exchange,
     either of which may make it difficult or impossible to close out a position
     when desired;
*    the risk that adverse price movements in an instrument can result in a loss
     substantially greater than a fund's initial investment; and
*    the risk that the counterparty will fail to perform its obligations.

The Board of Directors has approved the manager's policy  regarding  investments
in derivative securities.  That policy specifies factors that must be considered
in  connection  with a  purchase  of  derivative  securities.  The  policy  also
establishes a committee that must review certain  proposed  purchases before the
purchases  can be made.  The manager will report on fund  activity in derivative
securities to the Board of Directors as necessary.  In addition,  the Board will
review  the  manager's  policy  for  investments  in the  derivative  securities
annually.

INVESTMENTS IN COMPANIES WITH LIMITED OPERATING HISTORY

As  indicated  in Table 1, the funds may invest a portion of their assets in the
securities of issuers with limited  operating  history.  The manger considers an
issuer to have a limited  operating  history if that issuer has a record of less
than three years of continuous  operation.  The manager will consider periods of
capital formation, incubation,  consolidations,  and research and development in
determining  whether  a  particular  issuer  has a  record  of  three  years  of
continuous operation.

Investments in securities of issuers with limited  operating history may involve
greater risks than  investments in securities of more mature  issuers.  By their
nature, such issuers present limited operating history and financial information
upon which the manager may base its investment  decision on behalf of the funds.
In  additon,  financial  and other  information  regarding  such  issuers,  when
available, may be incomplete or inaccurate.

REPURCHASE AGREEMENTS

Each fund may invest in repurchase  agreements when such transactions present an
attractive  short-term  return on cash that is not  otherwise  committed  to the
purchase of securities pursuant to the investment policies of that fund.

A  repurchase  agreement  occurs  when,  at  the  time  the  fund  purchases  an
interest-bearing  obligation,  the seller (a bank or a broker-dealer  registered
under the Securities  Exchange Act of 1934) agrees to purchase it on a specified
date in the future at an agreed-upon  price.  The  repurchase  price reflects an
agreed-upon  interest  rate during the time the fund's  money is invested in the
security.

Since the security purchased constitutes security for the repurchase obligation,
a repurchase  agreement can be considered a loan  collateralized by the security
purchased.  The fund's risk is the ability of the seller to pay the  agreed-upon
repurchase price on the repurchase  date. If the seller  defaults,  the fund may
incur  costs in  disposing  of the  collateral,  which  would  reduce the amount
realized  thereon.  If the seller seeks relief under the  bankruptcy  laws,  the
disposition of the collateral may be delayed or limited. To the extent the value
of the security decreases, the fund could experience a loss.

The funds will limit repurchase  agreement  transactions to securities issued by
the U.S.  government,  its agencies and  instrumentalities,  and will enter into
such  transactions  with  those  banks and  securities  dealers  who are  deemed
creditworthy pursuant to criteria adopted by the funds' Board of Directors.

No fund  will  invest  more  than 15% of its  assets  in  repurchase  agreements
maturing in more than seven days.  MUNICIPAL NOTES Municipal notes are issued by
state and local governments or government entities to provide short-term capital
or to meet
cash flow needs.

Tax  Anticipation  Notes  (TANs)  are issued in  anticipation  of  seasonal  tax
revenues,  such as ad valorem property,  income,  sales, use and business taxes,
and are payable from these future  taxes.  Tax  anticipation  notes  usually are
general  obligations  of the  issuer.  General  obligations  are  secured by the
issuer's  pledge of its full  faith and  credit  (i.e.,  taxing  power)  for the
payment of principal and interest.

Revenue  Anticipation  Notes (RANs) are issued with the expectation that receipt
of future revenues,  such as federal revenue sharing or state aid payments, will
be used to repay the  notes.  Typically,  these  notes also  constitute  general
obligations of the issuer.

Bond  Anticipation  Notes (BANs) are issued to provide  interim  financing until
long-term financing can be arranged.  In most cases, the long-term bonds provide
the money for repayment of the notes.

Tax-Exempt  Commercial Paper is an obligation with a stated maturity of 365 days
or less  issued to finance  seasonal  cash flow  needs or to provide  short-term
financing in anticipation of longer-term financing.

Revenue Anticipation Warrants, or reimbursement warrants, are issued to meet the
cash flow needs of the State of  California  at the end of a fiscal  year and in
the early weeks of the following  fiscal year.  These  warrants are payable from
unapplied money in the state's  General Fund,  including the proceeds of revenue
anticipation notes issued following  enactment of a state budget or the proceeds
of refunding warrants issued by the state.

MUNICIPAL BONDS

Municipal  bonds,  which  generally  have  maturities of more than one year when
issued,  are designed to meet longer-term  capital needs.  These securities have
two principal classifications: general obligation bonds and revenue bonds.

General Obligation (GO) Bonds are issued by states, counties,  cities, towns and
regional districts to fund a variety of public projects,  including construction
of and improvements to schools,  highways, and water and sewer systems.  General
obligation  bonds are backed by the issuer's  full faith and credit based on its
ability to levy  taxes for the  timely  payment of  interest  and  repayment  of
principal,  although such levies may be  constitutionally or statutorily limited
as to rate or amount.

Revenue Bonds are not backed by an issuer's taxing authority;  rather,  interest
and  principal  are  secured by the net  revenues  from a project  or  facility.
Revenue  bonds are issued to finance a variety  of capital  projects,  including
construction or refurbishment of utility and waste disposal  systems,  highways,
bridges,  tunnels,  air and sea port  facilities,  schools and  hospitals.  Many
revenue bond issuers provide  additional  security in the form of a debt-service
reserve  fund that may be used to make  payments of interest and  repayments  of
principal on the issuer's obligations.  Some revenue bond financings are further
protected  by a  state's  assurance  (without  obligation)  that it will make up
deficiencies in the debt-service reserve fund.

Industrial Development Bonds (IDBs), a type of revenue bond, are issued by or on
behalf of public  authorities to finance privately  operated  facilities.  These
bonds  are  used to  finance  business,  manufacturing,  housing,  athletic  and
pollution  control  projects,  as well as public facilities such as mass transit
systems,  air and sea port facilities and parking  garages.  Payment of interest
and  repayment  of  principal  on an IDB  depend  solely on the  ability  of the
facility's user to meet financial obligations, and on the pledge, if any, of the
real or personal property  financed.  The interest earned on IDBs may be subject
to the federal alternative minimum tax.

VARIABLE- AND FLOATING-RATE OBLIGATIONS

The funds may buy  variable- and  floating-rate  demand  obligations  (VRDOs and
FRDOs).  These obligations carry rights that permit holders to demand payment of
the unpaid principal plus accrued  interest,  from the issuers or from financial
intermediaries.  Floating-rate securities, or floaters, have interest rates that
change  whenever  there is a change in a  designated  base  rate;  variable-rate
instruments  provide for a specified,  periodic adjustment in the interest rate,
which typically is based on an index. These rate formulas are designed to result
in a market value for the VRDO or FRDO that approximates par value.

OBLIGATIONS WITH TERM PUTS ATTACHED

Each fund may invest in  fixed-rate  bonds  subject to  third-party  puts and in
participation  interests  in such  bonds  held by a bank in trust or  otherwise.
These bonds and  participation  interests have tender options or demand features
that  permit  the funds to tender  (or put)  their  bonds to an  institution  at
periodic intervals and to receive the principal amount thereof.

The  advisor  expects  that the  funds  will pay more for  securities  with puts
attached than for securities without these liquidity  features.  The advisor may
buy  securities  with puts  attached to keep a fund fully  invested in municipal
securities while maintaining  sufficient  portfolio liquidity to meet redemption
requests or to facilitate management of the fund's investments.

To  ensure  that  the  interest  on  municipal  securities  subject  to  puts is
tax-exempt to the funds, the advisor limits the funds' use of puts in accordance
with  applicable  interpretations  and rulings of the Internal  Revenue  Service
(IRS).

Because it is difficult to evaluate the  likelihood of exercise or the potential
benefit of a put,  puts  normally  will be  determined  to have a value of zero,
regardless of whether any direct or indirect consideration is paid. Accordingly,
puts as  separate  securities  are not  expected  to affect the funds'  weighted
average  maturities.  When a fund has paid for a put, the cost will be reflected
as unrealized  depreciation on the underlying security for the period the put is
held.  Any gain on the sale of the  underlying  security  will be reduced by the
cost of the put.

There is a risk  that the  seller  of a put will not be able to  repurchase  the
underlying  obligation  when (or if) a fund  attempts  to  exercise  the put. To
minimize such risks, the funds will purchase obligations with puts attached only
from sellers deemed creditworthy by the advisor under the direction of the Board
of Directors.

TENDER OPTION BONDS

Tender option bonds (TOBs) were created to increase the supply of  high-quality,
short-term tax-exempt  obligations,  and thus they are of particular interest to
the  money  market  funds.   However,  any  of  the  funds  may  purchase  these
instruments.

TOBs are created by municipal  bond dealers who  purchase  long-term  tax-exempt
bonds in the  secondary  market,  place the  certificates  in  trusts,  and sell
interests in the trusts with puts or other liquidity  guarantees  attached.  The
credit quality of the resulting synthetic short-term  instrument is based on the
guarantor's short-term rating and the underlying bond's long-term rating.

There is some risk  that a  remarketing  agent  will  renege on a tender  option
agreement if the underlying bond is downgraded or defaults. Because of this, the
advisor  monitors the credit quality of bonds underlying the funds' TOB holdings
and  intends  to sell or put back any TOB if the rating on its  underlying  bond
falls below the second-highest rating category designated by a rating agency.

The  advisor  also takes  steps to  minimize  the risk that the fund may realize
taxable   income  as  a  result  of  holding  TOBs.   These  steps  may  include
consideration  of (a) legal opinions  relating to the  tax-exempt  status of the
underlying  municipal bonds, (b) legal opinions relating to the tax ownership of
the underlying  bonds, and (c) other elements of the structure that could result
in taxable income or other adverse tax consequences. After purchase, the advisor
monitors factors related to the tax-exempt  status of the fund's TOB holdings in
order to minimize the risk of generating taxable income.

WHEN-ISSUED AND FORWARD COMMITMENT AGREEMENTS

The funds may sometimes  purchase new issues of  securities on a when-issued  or
forward commitment basis in which the transaction price and yield are each fixed
at the time the  commitment is made,  but payment and delivery occur at a future
date (typically 15 to 45 days later).

When purchasing  securities on a when-issued or forward commitment basis, a fund
assumes  the rights  and risks of  ownership,  including  the risks of price and
yield  fluctuations.  Market rates of interest on debt securities at the time of
delivery  may be higher or lower than those  contracted  for on the  when-issued
security. Accordingly, the value of such security may decline prior to delivery,
which could result in a loss to the fund.  While the fund will make  commitments
to purchase or sell  securities  with the  intention  of actually  receiving  or
delivering them, it may sell the securities  before the settlement date if doing
so is deemed advisable as a matter of investment strategy.

In purchasing  securities on a when-issued or forward  commitment  basis, a fund
will  establish  and maintain  until the  settlement  date a segregated  account
consisting of cash, cash equivalents or other  appropriate  liquid securities in
an amount  sufficient to meet the purchase price. When the time comes to pay for
the when-issued  securities,  the fund will meet its obligations  with available
cash, through the sale of securities,  or, although it would not normally expect
to do so, by selling the  when-issued  securities  themselves  (which may have a
market  value  greater  or less than the  fund's  payment  obligation).  Selling
securities to meet  when-issued or forward  commitment  obligations may generate
taxable capital gains or losses.

INVERSE FLOATERS

An inverse floater is a type of derivative  security that bears an interest rate
that moves  inversely to market  interest  rates. As market interest rates rise,
the interest rate on inverse floaters goes down, and vice versa. Generally, this
is  accomplished  by expressing  the interest rate on the inverse  floater as an
above-market  fixed  rate  of  interest,  reduced  by an  amount  determined  by
reference to a market-based or bond-specific  floating interest rate (as well as
by any fees associated with administering the inverse floater program).

Inverse  floaters  may be issued in  conjunction  with an equal  amount of Dutch
Auction  floating-rate bonds (floaters),  or a market-based index may be used to
set the interest rate on these securities.  A Dutch Auction is an auction system
in which  the  price  of the  security  is  gradually  lowered  until it meets a
responsive  bid and is sold.  Floaters  and inverse  floaters  may be brought to
market by a broker-dealer  who purchases  fixed-rate  bonds and places them in a
trust  or  by  an  issuer  seeking  to  reduce  interest  expenses  by  using  a
floater/inverse floater structure in lieu of fixed-rate bonds.

In the case of a broker-dealer  structured offering (where underlying fixed-rate
bonds have been placed in a trust),  distributions from the underlying bonds are
allocated to floater and inverse floater holders in the following manner:

(i)      Floater  holders  receive  interest  based on rates  set at a six month
         interval or at a Dutch Auction,  which is typically held every 28 to 35
         days. Current and prospective  floater holders bid the minimum interest
         rate that they are willing to accept on the floaters,  and the interest
         rate is set just high  enough to ensure  that all of the  floaters  are
         sold.
(ii)     Inverse floater holders receive all of the interest that remains on the
         underlying bonds after floater interest and auction fees are paid.

Procedures for determining the interest payment on floaters and inverse floaters
brought to market directly by the issuer are  comparable,  although the interest
paid on the inverse  floaters is based on a presumed coupon rate that would have
been required to bring  fixed-rate  bonds to market at the time the floaters and
inverse floaters were issued.

Where inverse floaters are issued in conjunction with floaters,  inverse floater
holders may be given the right to acquire the underlying  security (or to create
a fixed-rate  bond) by calling an equal amount of  corresponding  floaters.  The
underlying security may then be held or sold. However, typically, there are time
constraints and other limitations associated with any right to combine interests
and claim the underlying security.

Floater holders subject to a Dutch Auction  procedure  generally do not have the
right to "put back"  their  interests  to the issuer or to a third  party.  If a
Dutch  Auction  fails,  the floater  holder may be required to hold its position
until the underlying bond matures,  during which time interest on the floater is
capped at a predetermined rate.

The  secondary  market for  floaters and inverse  floaters  may be limited.  The
market value of inverse  floaters tends to be  significantly  more volatile than
fixed-rate  bonds.  The interest rates on inverse  floaters may be significantly
reduced, even to zero, if interest rates rise.

SHORT-TERM SECURITIES

In order to meet  anticipated  redemptions,  to hold  pending  the  purchase  of
additional  securities for a fund's portfolio,  or, in some cases, for temporary
defensive  purposes,  the funds may  invest a portion  of their  assets in money
market and other short-term securities.

Examples of those securities include

*    Securities issued or guaranteed by the U.S. government and its agencies and
     instrumentalities;

*    Commercial Paper;

*    Certificates of Deposit and Euro Dollar Certificates of Deposit;

*    Bankers' Acceptances;

*    Short-term notes, bonds, debentures, or other debt instruments; and

*    Repurchase agreements.

Each of the funds may  invest up to 5% of its total  assets in any other  mutual
fund,  including  those advised by the manager,  provided that the investment is
consistent  with the fund's  investment  policies  and  restrictions.  Under the
Investment  Company  Act of 1940 (the  "Investment  Company  Act"),  the  fund's
investment  in such  securities,  subject to certain  exceptions,  currently  is
limited to (a) 3% of the total voting stock of any one investment  company,  (b)
5% of the fund's total assets with respect to any one investment company and (c)
10% of the fund's total assets in the aggregate.  Such purchases will be made in
the open market  where no  commission  or profit to a sponsor or dealer  results
from  the  purchase  other  than  the  customary  brokers'  commissions.   As  a
shareholder of another  investment  company, a fund would bear, along with other
shareholders,  its pro rata portion of the other investment  company's expenses,
including  advisory fees.  These expenses would be in addition to the management
fee that each fund bears directly in connection with its own operations.

FUTURES AND OPTIONS

Each fund may enter  into  futures  contracts,  options  or  options  on futures
contracts.  Funds  may  not,  however,  enter  into a  futures  transaction  for
speculative purposes. Generally, futures transactions will be used to

*    protect against a decline in market value of the funds' securities  (taking
     a SHORT futures position), or

*    protect  against the risk of an increase in market value for  securities in
     which  the  fund  generally  invests  at  a  time  when  the  fund  is  not
     fully-invested (taking a LONG futures position), or

*    provide a temporary  substitute for the purchase of an individual  security
     that may be purchased in an orderly fashion.

Some futures and options  strategies,  such as SELLING futures,  buying puts and
writing calls,  hedge a fund's  investments  against price  fluctuations.  Other
strategies,  such as BUYING  futures,  writing  puts and buying  calls,  tend to
increase  market  exposure.  Although other  techniques may be used to control a
fund's exposure to market  fluctuations,  the use of futures  contracts may be a
more  effective  means of hedging  this  exposure.  While a fund pays  brokerage
commissions in connection with opening and closing out futures positions,  these
costs are lower than the transaction  costs incurred in the purchase and sale of
the underlying securities.

For example,  the "sale" of a future by a fund means the fund becomes  obligated
to deliver the security (or  securities,  in the case of an "index" future) at a
specified  price on a specified  date. The "purchase" of a future means the fund
becomes  obligated to buy the security (or securities) at a specified price on a
specified date. Futures contracts provide for the sale by one party and purchase
by another  party of a specific  security at a specified  future time and price.
The funds may engage in futures and  options  transactions  based on  securities
indexes that are consistent with the fund's investment  objectives.  Examples of
indexes that may be used include the Bond Buyer Index of  Municipal  Bonds,  for
fixed income funds,  or the S&P 500 Index,  for equity funds.  The fund also may
engage in futures and options transactions based on specific securities, such as
U.S.  Treasury bonds or notes.  Futures contracts are traded on national futures
exchanges.  Futures  exchanges  and trading are  regulated  under the  Commodity
Exchange  Act  by  the  Commodity  Futures  Trading  Commission  (CFTC),  a U.S.
government agency.

Index futures  contracts differ from traditional  futures contracts in that when
delivery takes place, no stocks or bonds change hands. Instead,  these contracts
settle in cash at the spot market  value of the Index.  Although  other types of
futures  contracts by their terms call for actual  delivery or acceptance of the
underlying  securities,  in most cases the  contracts  are closed out before the
settlement date. A futures position may be closed by taking an opposite position
in an identical contract (i.e.,  buying a contract that has previously been sold
or selling a contract that has previously been bought).

Unlike when the fund  purchases or sells a bond, no price is paid or received by
the fund upon the  purchase or sale of the future.  Initially,  the fund will be
required to deposit an amount of cash or securities equal to a varying specified
percentage of the contract amount.  This amount is known as initial margin.  The
margin  deposit is intended to assure  completion  of the contract  (delivery or
acceptance  of the  underlying  security) if it is not  terminated  prior to the
specified  delivery  date.  They do not  constitute  "margin  transactions"  for
purposes  of  the  funds'  investment   restrictions.   Minimum  initial  margin
requirements  are  established by the futures  exchanges and may be revised.  In
addition, brokers may establish margin deposit requirements that are higher than
the exchange minimums.  Cash held in the margin account is not income producing.
Subsequent  payments,  called variation margin, to and from the broker,  will be
made on a daily basis as the price of the  underlying  debt  securities or index
fluctuates, making the future more or less valuable , a process known as marking
the contract to market.  Changes in variation margin are recorded by the fund as
unrealized gains or losses.  At any time prior to expiration of the future,  the
fund may elect to close the  position by taking an opposite  position  that will
operate to  terminate  its  position in the  future.  A final  determination  of
variation  margin is then made;  additional  cash is  required  to be paid by or
released to the fund and the fund realizes a loss or gain.

*RISKS RELATED TO FUTURES AND OPTIONS TRANSACTIONS

Futures  and  options  prices can be  volatile,  and  trading  in these  markets
involves certain risks. If the advisor applies a hedge at an inappropriate  time
or judges interest rate or equity market trends incorrectly, futures and options
strategies may lower a fund's return.

A fund could suffer  losses if it were unable to close out its position  because
of an illiquid secondary market.  Futures contracts may be closed out only on an
exchange that provides a secondary market for these  contracts,  and there is no
assurance that a liquid secondary  market will exist for any particular  futures
contract at any particular time. Consequently, it may not be possible to close a
futures  position when the advisor  considers it  appropriate or desirable to do
so. In the  event of  adverse  price  movements,  a fund  would be  required  to
continue making daily cash payments to maintain its required margin. If the fund
had insufficient cash, it might have to sell portfolio  securities to meet daily
margin  requirements  at a time when the advisor would not otherwise elect to do
so.  In  addition,  a fund  may be  required  to  deliver  or take  delivery  of
instruments  underlying  futures  contracts  it holds.  The advisor will seek to
minimize  these risks by limiting  the  contracts  entered into on behalf of the
funds to those traded on national futures  exchanges and for which there appears
to be a liquid secondary market.

A fund could  suffer  losses if the prices of its futures and options  positions
were poorly correlated with its other investments,  or if securities  underlying
futures contracts purchased by a fund had different maturities than those of the
portfolio  securities being hedged. Such imperfect  correlation may give rise to
circumstances in which a fund loses money on a futures contract at the same time
that it experiences a decline in the value of its "hedged" portfolio securities.
A fund also could lose margin  payments it has deposited  with a margin  broker,
if, for example, the broker became bankrupt.

Most  futures  exchanges  limit the amount of  fluctuation  permitted in futures
contract  prices during a single  trading day. The daily limit  establishes  the
maximum  amount that the price of a futures  contract may vary either up or down
from the previous day's settlement price at the end of the trading session. Once
the daily limit has been reached in a particular type of contract, no trades may
be made on that day at a price  beyond  the  limit.  However,  the  daily  limit
governs only price movement during a particular trading day and, therefore, does
not limit potential losses. In addition, the daily limit may prevent liquidation
of unfavorable positions. Futures contract prices have occasionally moved to the
daily  limit for  several  consecutive  trading  days with little or no trading,
thereby  preventing prompt  liquidation of futures positions and subjecting some
futures traders to substantial losses.

*OPTIONS ON FUTURES

By purchasing an option on a futures contract, a fund obtains the right, but not
the  obligation,  to sell the  futures  contract  (a put  option)  or to buy the
contract (a call  option) at a fixed  strike  price.  A fund can  terminate  its
position in a put option by allowing it to expire or by  exercising  the option.
If the  option  is  exercised,  the fund  completes  the sale of the  underlying
security at the strike price.  Purchasing  an option on a futures  contract does
not require a fund to make margin payments unless the option is exercised.

Although  they do not  currently  intend to do so, the funds may write (or sell)
call  options that  obligate it to sell (or  deliver)  the  option's  underlying
instrument  upon  exercise of the option.  While the receipt of option  premiums
would  mitigate  the  effects of price  declines,  the funds  would give up some
ability to participate in a price increase on the underlying security. If a fund
were to engage in options transactions, it would own the futures contract at the
time a call were written and would keep the contract  open until the  obligation
to deliver it pursuant to the call expired.

*RESTRICTIONS ON THE USE OF FUTURES CONTRACTS AND OPTIONS

Each fund may enter  into  futures  contracts,  options  or  options  on futures
contracts.

Under the  Commodity  Exchange  Act, a fund may enter into  futures  and options
transactions (a) for hedging purposes without regard to the percentage of assets
committed  to initial  margin and option  premiums or (b) for other than hedging
purposes,  provided that assets  committed to initial margin and option premiums
do not exceed 5% of the fund's total assets. To the extent required by law, each
fund will set aside cash and appropriate  liquid assets in a segregated  account
to cover its obligations related to futures contracts and options.

RESTRICTED AND ILLIQUID SECURITIES

The funds may, from time to time,  purchase  restricted or illiquid  securities,
including  Rule  144A  securities,   when  they  present  attractive  investment
opportunities  that otherwise meet the funds' criteria for selection.  Rule 144A
securities  are  securities  that are  privately  placed  with and traded  among
qualified  institutional investors rather than the general public. Although Rule
144A securities are considered "restricted securities," they are not necessarily
illiquid.

With respect to securities eligible for resale under Rule 144A, the staff of the
SEC has  taken  the  position  that  the  liquidity  of such  securities  in the
portfolio of a fund offering redeemable securities is a question of fact for the
Board  of  Directors  to  determine,  such  determination  to be  based  upon  a
consideration  of the readily  available  trading  markets and the review of any
contractual restrictions. Accordingly, the Board of Directors is responsible for
developing and  establishing  the guidelines and procedures for  determining the
liquidity  of Rule  144A  securities.  As  allowed  by Rule  144A,  the Board of
Directors of the funds has delegated the day-to-day  function of determining the
liquidity  of Rule  144A  securities  to the  advisor.  The  board  retains  the
responsibility to monitor the implementation of the guidelines and procedures it
has adopted.

Since the secondary  market for such securities is limited to certain  qualified
institutional  investors,  the  liquidity  of  such  securities  may be  limited
accordingly  and a fund  may,  from  time to  time,  hold a Rule  144A or  other
security  that  is  illiquid.  In such  an  event,  the  advisor  will  consider
appropriate remedies to minimize the effect on such fund's liquidity.

INVESTMENT POLICIES

Unless otherwise indicated,  with the exception of the percentage limitations on
borrowing,  the  restrictions  apply at the time  transactions are entered into.
Accordingly,  any later  increase or decrease  beyond the  specified  limitation
resulting  from a change  in a fund's  net  assets  will  not be  considered  in
determining whether it has complied with its investment restrictions.

*FUNDAMENTAL INVESTMENT POLICIES

The  funds'  investment  restrictions  are set  forth  below.  These  investment
restrictions  are  fundamental  and may not be  changed  without  approval  of a
majority of the  outstanding  votes of  shareholders of a fund, as determined in
accordance with the Investment Company Act.

- ------------------------- ------------------------------------------------------
SUBJECT                   POLICIES
- ------------------------- ------------------------------------------------------
Senior Securities         A fund may not  issue  senior  securities,
                          except as permitted under the Investment Company Act.
Borrowing                 A fund may not borrow money,  except that the fund may
                          borrow money for temporary or emergency  purposes (not
                          for   leveraging  or  investment)  in  an  amount  not
                          exceeding   33-1/3%   of  the  fund's   total   assets
                          (including  the  amount   borrowed)  less  liabilities
                          (other than borrowings).
Lending                   A fund  may not lend any  security  or make any  other
                          loan if, as a result,  more than 33-1/3% of the fund's
                          total assets would be lent to other  parties,  except,
                          (i)  through  the  purchase  of  debt   securities  in
                          accordance with its investment objective, policies and
                          limitations   or  (ii)  by  engaging   in   repurchase
                          agreements with respect to portfolio securities.
Real Estate               A fund may not  purchase  or sell  real  estate
                          unless acquired as a result of ownership of securities
                          or other  instruments.  This policy  shall not prevent
                          the  fund  from  investment  in  securities  or  other
                          instruments  backed by real  estate or  securities  of
                          companies  that deal in real  estate or are engaged in
                          the real estate business.
Concentration             A  fund  may  not   concentrate   its  investments  in
                          securities of issuers in a particular  industry (other
                          than  securities  issued  or  guaranteed  by the  U.S.
                          government    or    any    of    its    agencies    or
                          instrumentalities).
Underwriting              A fund  may not act as an  underwriter  of  securities
                          issued by others,  except to the extent  that the fund
                          may be considered an underwriter within the meaning of
                          the  Securities  Act of  1933  in the  disposition  of
                          restricted securities.
Commodities               A fund may not purchase or sell  physical  commodities
                          unless acquired as a result of ownership of securities
                          or other  instruments;  provided that this  limitation
                          shall not prohibit the fund from purchasing or selling
                          options and futures  contracts  or from  investing  in
                          securities  or other  instruments  backed by  physical
                          commodities.
Control                   A fund may not invest for purposes of exercising 
                          control over management.
- ------------------------- ------------------------------------------------------

For purposes of the investment  restriction  relating to  concentration,  a fund
shall not purchase any  securities  that would cause 25% or more of the value of
the fund's total assets at the time of purchase to be invested in the securities
of one or more issuers  conducting  their principal  business  activities in the
same  industry,  provided  that  (a)  there is no  limitation  with  respect  to
obligations issued or guaranteed by the U.S. government, any state, territory or
possession  of the United  States,  the  District  of  Columbia  or any of their
authorities,   agencies,   instrumentalities   or  political   subdivisions  and
repurchase  agreements  secured by such  instruments,  (b) wholly owned  finance
companies  will be considered to be in the  industries of their parents if their
activities are primarily related to financing the activities of the parents, (c)
utilities will be divided  according to their  services,  for example,  gas, gas
transmission, electric and gas, electric and telephone will each be considered a
separate  industry,  and (d) personal credit and business credit businesses will
be considered separate industries.

*NONFUNDAMENTAL INVESTMENT POLICIES

In  addition,  the funds are  subject  to the  following  additional  investment
restrictions  that  are not  fundamental  and may be  changed  by the  Board  of
Directors.

- --------------------------- ----------------------------------------------------
SUBJECT                     POLICIES
- --------------------------- ----------------------------------------------------
Diversification             A  fund  may  not  purchase  additional   investment
                            securities  at any  time  during  which  outstanding
                            borrowings  exceed  5% of the  total  assets  of the
                            fund.
Liquidity                   A fund may not purchase any security or enter into a
                            repurchase  agreement if, as a result, more than 15%
                            of its net assets (10% for the money  market  funds)
                            would  be  invested  in  repurchase  agreements  not
                            entitling  the holder to payment  of  principal  and
                            interest  within seven days and in  securities  that
                            are  illiquid  by  virtue  of legal  or  contractual
                            restrictions  on resale or the  absence of a readily
                            available market.
Short Sales                 A fund may not sell securities  short,  unless
                            it  owns  or has  the  right  to  obtain  securities
                            equivalent in kind and amount to the securities sold
                            short,  and provided  that  transactions  in futures
                            contracts  and options are not deemed to  constitute
                            selling securities short.
Margin                      A fund may not purchase securities on margin, except
                            that the fund may obtain such
                            short-term credits as are necessary for the 
                            clearance of transactions, and provided that
                            margin payments in connection with futures contracts
                            and   options   on  futures   contracts   shall  not
                            constitute purchasing securities on margin.
- --------------------------- ----------------------------------------------------

The  Investment  Company  Act  imposes  certain  additional   restrictions  upon
acquisition  by the  corporation  of securities  issued by insurance  companies,
broker-dealers,  underwriters or investment advisors, and upon transactions with
affiliated persons as therein defined.  It also defines and forbids the creation
of cross and circular ownership.  Neither the Securities and Exchange Commission
nor  any  other  agency  of the  federal  or  state  agency  participates  in or
supervises  the  management  of the  funds  or  their  investment  practices  or
policies.

The Investment Company Act also provides that the funds may not invest more than
25% of their assets in the securities of issuers  engaged in a single  industry.
In  determining  industry  groups  for  purposes  of this  restriction,  the SEC
ordinarily  uses the Standard  Industry  Classification  codes  developed by the
United  States  Office of  Management  and Budget.  In the  interest of ensuring
adequate diversification,  the funds monitor industry concentration using a more
restrictive  list of industry groups than that recommended by the SEC. The funds
believe that these  classifications are reasonable and are not so broad that the
primary  economic  characteristics  of  the  companies  in a  single  class  are
materially different. The use of these restrictive industry classifications may,
however,  cause the funds to forego investment  possibilities that may otherwise
be available to them under the Investment Company Act.

PORTFOLIO TURNOVER

*TAX-MANAGED VALUE FUND

The managers of the  Tax-Managed  Value fund seek to minimize  realized  capital
gains by keeping  portfolio  turnover low and generally  holding its investments
for long  periods.  Because a higher  turnover rate would  increase  transaction
costs and may increase taxable capital gains,  the manager  carefully weighs the
potential benefits of short-term investing against the tax impact such investing
would have on the fund's shareholders.

*OTHER FUNDS

The portfolio turnover rates of the funds (other than the Tax-Managed Value) are
shown in the Financial Highlights table in the prospectuses.

With respect to each other fund,  the manager will purchase and sell  securities
without  regard to the length of time the security  has been held.  Accordingly,
the fund's rate of portfolio turnover may be substantial.

The funds intend to purchase a given security  whenever the manager  believes it
will  contribute  to the stated  objective of the fund. In order to achieve each
fund's investment  objective,  the manager will sell a given security, no matter
for how long or for how short a period it has been held in the portfolio, and no
matter  whether the sale is at a gain or at a loss, if the manger  believes that
the security is not fulfilling its purpose,  either because, among other things,
it did not live up to the manager's expectations,  or because it may be replaced
with another  security  holding greater  promise,  or because it has reached its
optimum  potential,  or because of a change in the circumstances of a particular
company  or  industry  or in  general  economic  conditions,  or because of some
combination of such reasons.

When a general decline in security  prices is anticipated,  the equity funds may
decrease or eliminate  entirely  their equity  positions and increase their cash
positions, and when a rise in price levels is anticipated,  the equity funds may
increase their equity positions and increase their cash positions.  However,  it
should be expected that the funds will, under most circumstances, be essentially
fully invested in equity securities.

Since  investment  decisions are based on the  anticipated  contribution  of the
security in question to the fund's  objectives,  the manager  believes  that the
rate of portfolio  turnover is irrelevant  when it believes a change is in order
to achieve those objectives.  As a result,  the fund's annual portfolio turnover
rate  cannot be  anticipated  and may be higher  than  other  mutual  funds with
similar investment  objectives.  Higher turnover would generate  correspondingly
greater brokerage commissions, which is a cost the funds pay directly. Portfolio
turnover may also affect the character of capital gains realized and distributed
by the fund,  if any,  since  short-term  capital  gains are taxable as ordinary
income.  This  disclosure   regarding  portfolio  turnover  is  a  statement  of
fundamental policy and may be changed only by a vote of the shareholders.

Since the manager does not take  portfolio  turnover rate into account in making
investment  decisions,  (1) the manager has no  intention of  accomplishing  any
particular  rate  of  portfolio  turnover,  whether  high  or  low,  and (2) the
portfolio   turnover   rates  in  the  past  should  not  be   considered  as  a
representation of the rates that will be attained in the future.

MANAGEMENT

*THE BOARD OF DIRECTORS

The Board of Directors  oversees the  management of the funds and meets at least
quarterly  to  review  reports  about  fund  operations.  Although  the Board of
Directors  does not manage the funds,  it has hired the  advisor to do so.  More
than half of the directors are  "independent"  of the funds'  advisor,  that is,
they are not employed by and have no financial interest in the advisor.

The individuals  listed in the table below whose names are marked by an asterisk
(*) are interested  persons of the funds (as defined in the  Investment  Company
Act) by virtue of, among other considerations, their affiliation with either the
funds; the advisor,  American Century  Investment  Management,  Inc. (ACIM); the
funds' agent for transfer and administrative services, American Century Services
Corporation  (ACSC); the funds' distribution agent and  co-administrator,  Funds
Distributor,  Inc. (FDI); the parent  corporation,  American Century  Companies,
Inc. (ACC) or ACC's  subsidiaries;  or other funds advised by the advisor.  Each
director  listed  below  serves  as a  director  of  six  registered  investment
companies in the American Century family of funds, which are also advised by the
advisor.  The address at which each  director  listed below is American  Century
Tower I, 4500 Main Street, Kansas City, Missouri 64111.

<TABLE>
- -------------------------------------- ------------------------- -----------------------------------------------------------
NAME (AGE)                             POSITION(S) HELD WITH     PRINCIPAL OCCUPATION(S)
ADDRESS                                FUND                      DURING PAST 5 YEARS
- -------------------------------------- ------------------------- -----------------------------------------------------------
<S>                                      <C>                      <C>                                                     
James E. Stowers, Jr.* (74)            Director, Chairman of     Chairman, Director and controlling shareholder, ACC,
                                       the Board                 Chairman and Director, ACIM and ACIS
James E. Stowers III* (39)             Director                  Director and Chief Executive Officer, ACC, ACIM and ACIS
Thomas A. Brown (58)                   Director                  Director of Plains States Development, Applied Industrial
                                                                 Technologies, Inc., a corporation engaged in the sale of
                                                                 bearings and power transmission products
Robert W. Doering, M.D. (65)           Director                  Retired, formerly a general surgeon
Andrea C. Hall, Ph.D. (54)             Director                  Senior Vice President and Associate Director, Midwest
                                                                 Research Institute
D.D. (Del) Hock (63)                   Director                  Retired, formerly Chairman, Public Service Company of
                                                                 Colorado; Director, Service Tech, Inc., Hathaway
                                                                 Corporation, and J.D. Edwards & Company
Donald H. Pratt (60)                   Director, Vice Chairman   President and Director, Butler Manufacturing Company
                                       of the Board
Lloyd T. Silver, Jr. (70)              Director                  President, LSC, Inc., manufacturer's representative
M. Jeannine Strandjord (52)            Director                  Senior Vice President, Finance, Sprint Corporation;
                                                                 Director, DST Systems, Inc.
- -------------------------------------- ------------------------- -----------------------------------------------------------

*COMMITTEES

The Board has four  standing  committees  to oversee  specific  functions of the
funds'  operations.  Other  than  the  Nominating  Committee,  only  independent
directors serve on these committees.  Information about these committees appears
in the table below. The Director first named acts as chairman of the committee.


- ------------------- ----------------------------- ---------------------------------------------------------------------
COMMITTEE           MEMBERS                       FUNCTION OF COMMITTEE
- ------------------- ----------------------------- ---------------------------------------------------------------------
Executive           James E. Stowers III          The Executive Committee performs the functions of the Board of
                    Donald H. Pratt               Directors between Board meetings, subject to the limitations on its
                                                  power set out in the Maryland General Corporation Law, and except
                                                  for matters required by the Investment Company Act to be acted upon
                                                  by the whole Board.
- ------------------- ----------------------------- ---------------------------------------------------------------------
Compliance          Donald H. Pratt               The Compliance Committee reviews the results of the funds'
                    Lloyd T. Silver, Jr.          compliance testing program, reviews quarterly reports from the
                    Andrea C. Hall, Ph.D.         advisor to the Board regarding various compliance matters and
                                                  monitors the implementation of the funds' Code of Ethics, including
                                                  any violations thereof.
- ------------------- ----------------------------- ---------------------------------------------------------------------
Audit               M. Jeannine Strandjord        The Audit Committee recommends the engagement of the funds'
                    Robert W. Doering, M.D.       independent auditor and oversees its activities. The Committee
                    D.D. (Del) Hock               receives reports from the advisor's Internal Audit Department,
                                                  which is accountable solely to the  Committee.  The Committee
                                                  also receives  reporting about compliance  matters  affecting
                                                  the funds.
- ------------------- ----------------------------- ---------------------------------------------------------------------
Nominating          Donald H. Pratt               The Nominating Committee primarily considers and recommends
                    D.D. (Del) Hock               individuals for nomination as directors. The names of potential
                    James E. Stowers III          director candidates are drawn from a number of sources, including
                                                  recommendations  from  members of the Board,  management  and
                                                  shareholders.  This committee also reviews and makes recommendations 
                                                  to the Board with respect to the composition of Board committees and 
                                                  other Board-related matters, including its organization, size, 
                                                  composition, responsibilities, functions and compensation.
- ------------------- ----------------------------- ---------------------------------------------------------------------
</TABLE>

*COMPENSATION OF DIRECTORS

The  directors  also serve as directors  for five  American  Century  investment
companies  other than American  Century Mutual Funds,  Inc. Each director who is
not an  "interested  person" as defined in the  Investment  Company Act receives
compensation  for  service  as a member of the  Board of all six such  companies
based on a schedule  that takes into account the number of meetings held and the
assets of the funds for which the meetings are held. These fees and expenses are
divided among the six investment  companies  based, in part, upon their relative
net assets.  Under the terms of the management  agreement with the advisor,  the
funds are responsible for paying such fees and expenses.

The  table  presented  shows  the  aggregate  compensation  paid by ACMF for the
periods indicated and by the American Century family of funds as a whole to each
trustee who is not an "interested  person" as defined in the Investment  Company
Act.

Aggregate Director Compensation for Fiscal Year Ended October 31, 1998
- -------------------------- -------------------------- -------------------------
                                                      TOTAL COMPENSATION FROM
                                                                THE
                            TOTAL COMPENSATION FROM   AMERICAN CENTURY FAMILY
                                     ACIM2                   OF FUNDS3

NAME OF DIRECTOR1
- -------------------------- -------------------------- -------------------------
James E. Stowers, Jr.                [INFORMATION NOT YET AVAILABLE]
James E. Stowers III
Thomas A. Brown
Robert W. Doering, M.D.
Andrea C. Hall, Ph.D.
D.D. (Del) Hock
Donald H. Pratt
Lloyd T. Silver, Jr.
M. Jeannine Strandjord
- -------------------------- -------------------------- -------------------------

1    Interested directors receive no compensation for their services as such.

2    Includes  compensation  paid to the directors  during the fiscal year ended
     October 31, 1998, and also includes amounts deferred at the election of the
     directors  under the American  Century Mutual Funds  Deferred  Compensation
     Plan for  Non-Interested  Directors  and  Trustees.  The  total  amount  of
     deferred  compensation  included  in the  preceding  table  is as  follows:
     [INFORMATION NOT YET AVAILABLE].

3    Includes  compensation  paid by the 13  investment  company  members of the
     American Century family of funds.

The funds have  adopted the  American  Century  Deferred  Compensation  Plan for
Non-Interested Directors and Trustees. Under the plan, the independent directors
may defer  receipt of all or any part of the fees to be paid to them for serving
as directors of the funds.

Under the plan, all deferred fees are credited to an account  established in the
name of the  directors.  The amounts  credited to the account  then  increase or
decrease,  as the case may be, in accordance with the performance of one or more
of the American  Century  funds that are selected by the  director.  The account
balance  continues  to  fluctuate  in  accordance  with the  performance  of the
selected  fund or funds  until  final  payment of all  amounts  credited  to the
account.  Directors are allowed to change their designation of mutual funds from
time to time.

No deferred fees are payable until such time as a director  resigns,  retires or
otherwise ceases to be a member of the Board of Directors. Directors may receive
deferred fee account  balances either in a lump sum payment or in  substantially
equal installment payments to be made over a period not to exceed 10 years. Upon
the death of a director, all remaining deferred fee account balances are paid to
the director's beneficiary or, if none, to the director's estate.

The plan is an unfunded plan and,  accordingly,  the funds have no obligation to
segregate assets to secure or fund the deferred fees. The rights of directors to
receive  their  deferred  fee account  balances  are the same as the rights of a
general unsecured  creditor of the funds. The plan may be terminated at any time
by the  administrative  committee of the plan. If  terminated,  all deferred fee
account balances will be paid in a lump sum.

[No  deferred  fees were paid to any  director  under the plan during the fiscal
year ended October 31, 1998]

*OFFICERS

Background for the officers of the funds is provided below. All persons named as
officers  of the  funds  also  serve  in  similar  capacities  for the 12  other
investment  companies advised by American Century. Not all officers of the funds
are listed;  only those  officers with  policy-making  functions are listed.  No
officer is  compensated  for his or her service as an officer of the funds.  The
individuals  listed in the table below are  interested  persons of the funds (as
defined in the Investment Company Act) by virtue of, among other considerations,
their  affiliation  with  either the funds,  the  holding  company of the funds'
investment advisor and transfer agent (ACC), ACC's subsidiaries  (including ACIM
and ACSC), or the funds' distributor (FDI), as specified in the following table.

<TABLE>
<CAPTION>
- -------------------------------------- ---------------- ----------------------------------------------------------------
                                       POSITION(S)
NAME (AGE)                             HELD WITH FUND   PRINCIPAL OCCUPATION(S)
ADDRESS                                                 DURING PAST 5 YEARS
- -------------------------------------- ---------------- ----------------------------------------------------------------
<S>                                      <C>             <C>        
[Richard W. Ingram (43)                President        Executive Vice President and Director of Client Services and
                                                        Treasury Administration of FDI.  Mr. Ingram joined FDI in
                                                        1995.  Prior to joining FDI, Mr. Ingram served as Vice
                                                        President].

Christopher J. Kelley (34)             Vice President   Vice President and Associate General Counsel of FDI.  Prior to
                                                        joining FDI, Mr. Kelley served as Assistant Counsel at Forum
                                                        Financial Group (from April 1994 to July 1996) and before that
                                                        as a compliance officer for Putnam Investments (from 1992 to
                                                        1994).

Mary A. Nelson (34)                    Vice President   Vice President and Manager of Treasury Services and
                                                        Administration of FDI.  Prior to joining FDI, Ms. Nelson
                                                        served as Assistant Vice President and Client Manager for The
                                                        Boston Company, Inc. (from 1989 to 1994).

Maryanne Roepke, CPA (43)              Vice President   Senior Vice President, Treasurer and Principal Accounting
                                       and Treasurer    Officer, ACSC

Patrick A. Looby (40)                  Vice President   Vice President and Associate General Counsel, ACSC

Douglas A. Paul (52)                   Secretary and    Vice President and Associate General Counsel, ACSC
                                       Vice President

C. Jean Wade (35)                      Controller       Controller-Fund Accounting, ACSC

Jon Zindel (32)                        Tax Officer      Director of Taxation, ACSC (since 1996)
                                                        Tax Manager, Price Waterhouse LLPC (1989)
- -------------------------------------- ---------------- ----------------------------------------------------------------
</TABLE>

*THE FUNDS' BIGGEST SHAREHOLDERS

As of December 31, 1998, the following  companies were the record owners of more
than 5% of a fund's outstanding shares:

                                                                    % OF SHARES
                                                       # OF SHARES  OUTSTANDING
                                                           HELD
FUND                                       SHAREHOLDER
Growth
Ultra
Select   [INFORMATION NOT YET AVAILABLE]
Vista
Heritage
Balanced
Tax-Managed Value
Giftrust
New Opportunities
Limited-Term Bond
Intermediate-Term Bond
Bond
High-Yield

The funds are unaware of any other  shareholders,  beneficial or of record,  who
own more than 5% of a fund's  outstanding  shares.  As of December 31, 1998, the
officers and directors of the funds, as a group,  own less than 1% of any fund's
outstanding shares.

SERVICE PROVIDERS

The funds have no employees.  To conduct the funds' day-to-day  activities,  the
funds have hired a number of service  providers.  Each  service  provider  has a
specific function to fill on behalf of the funds and is described below.

The advisor and the transfer agent, ACSC, are both wholly owned by ACC. James E.
Stowers  Jr.,  Chairman of ACC,  controls  ACC by virtue of his  ownership  of a
majority of its common stock.

*INVESTMENT ADVISOR

Each fund has an  investment  management  agreement  with the advisor,  American
Century Investment Management,  Inc., dated [August 1, 1997]. This agreement was
approved by the shareholders of each of the funds on [July 30, 1997].

A description of the  responsibilities  of the advisor appears in the Prospectus
under the caption "Management."

For the services provided to the funds, the advisor receives a monthly fee based
on a percentage of the average net assets of the fund.

On the first  business day of each month,  the funds pay a management fee to the
advisor for the previous  month at the specified  rate. The fee for the previous
month  is  calculated  by  multiplying  the  applicable  fee for the fund by the
aggregate average daily closing value of a fund's net assets during the previous
month,  and further  multiplying  that product by a fraction,  the  numerator of
which is the number of days in the previous  month and the  denominator of which
is 365 (366 in leap years).

The  management  agreement  shall  continue  in effect  until the earlier of the
expiration  of two  years  from the date of its  execution  or until  the  first
meeting of  shareholders  following such execution and for as long thereafter as
its  continuance  is  specifically  approved at least annually by (1) the funds'
Board of  Directors,  or by the vote of a  majority  of  outstanding  votes  (as
defined in the Investment  Company Act) and (2) by the vote of a majority of the
directors  of the funds  who are not  parties  to the  agreement  or  interested
persons of the  advisor,  cast in person at a meeting  called for the purpose of
voting on such approval.

The management  agreement provides that it may be terminated at any time without
payment  of any  penalty  by the funds'  Board of  Directors,  or by a vote of a
majority of outstanding  votes,  on 60 days' written notice to the advisor,  and
that it shall be automatically terminated if it is assigned.

The  management  agreement  provides that the advisor shall not be liable to the
funds or its  shareholders  for  anything  other than willful  misfeasance,  bad
faith, gross negligence or reckless disregard of its obligations and duties.

The  management  agreement  also  provides  that the advisor  and its  officers,
directors and employees may engage in other business,  devote time and attention
to any other  business  whether of a similar or  dissimilar  nature,  and render
services to others.

Certain  investments may be appropriate for the funds and also for other clients
advised by the advisor. Investment decisions for the funds and other clients are
made with a view to  achieving  their  respective  investment  objectives  after
consideration  of such factors as their current  holdings,  availability of cash
for investment and the size of their investment generally. A particular security
may be bought or sold for only one client or fund,  or in different  amounts and
at  different  times  for more than one but less than all  clients  or fund.  In
addition,  purchases  or sales of the same  security may be made for two or more
clients or fund on the same date.  Such  transactions  will be  allocated  among
clients in a manner  believed by the advisor to be  equitable  to each.  In some
cases this procedure  could have an adverse effect on the price or amount of the
securities purchased or sold by a fund.

The advisor may  aggregate  purchase and sale orders of the funds with  purchase
and sale  orders  of its  other  clients  when the  advisor  believes  that such
aggregation  provides  the best  execution  for the funds.  The funds'  Board of
Directors has approved the policy of the advisor with respect to the aggregation
of portfolio  transactions.  Where portfolio  transactions have been aggregated,
the funds  participate at the average share price for all  transactions  in that
security on a given day and share  transaction  costs on a pro rata  basis.  The
advisor  will not  aggregate  portfolio  transactions  of the  funds  unless  it
believes such  aggregation is consistent with its duty to seek best execution on
behalf  of the  funds and the terms of the  management  agreement.  The  advisor
receives  no  additional  compensation  or  remuneration  as a  result  of  such
aggregation.

Investment  management  fees  paid by each  fund for the  fiscal  periods  ended
October 31, 1998, 1997 and 1996, are indicated in the following table.

  UNIFIED MANAGEMENT FEES
- ----------------------- ------------------- ------------------- ----------------
FUND                           1998               1997                1996
- ----------------------- ------------------- ------------------- ----------------
Growth                                       $48,473,362         $47,632,557
Ultra                                        204,740,370         162,207,777
Select                            DATA        44,667,241          39,305,054
Vista                              NOT        19,603,205          20,199,050
Heritage                           YET        11,959,662          10,572,605
Balanced                     AVAILABLE         9,021,923           8,345,585
Tax-Managed Value                                    N/A                 N/A
Giftrust                                       9,052,939           7,161,935
New Opportunities                              2,150,593
Limited-Term Bond                                 78,059              52,116
Intermediate-Term Bond                           131,721             108,870
Bond                                           1,057,852           1,148,428
High-Yield                                         8,462
- ----------------------- ------------------- ------------------- ----------------

**CALLOUT BOX********

Other Advisory Relationships

In addition  to  managing  the funds,  the  advisor  also acts as an  investment
advisor to 12 institutional  accounts and to the following registered investment
companies:
 American Century World Mutual Funds, Inc.
 American Century Premium Reserves, Inc.
 American Century Variable Portfolios, Inc.
 American Century Capital Portfolios, Inc.
 American Century Strategic Asset Allocations, Inc.
 American Century Municipal Trust
 American Century Government Income Trust
 American Century Investment Trust
 American Century Target Maturities Trust
 American Century Quantitative Equity Funds
 American Century International Bond Funds.
 American Century California Tax-Free and Municipal Funds
**END CALLOUT BOX******

*TRANSFER AGENT AND ADMINISTRATOR

American Century Services  Corporation,  4500 Main Street, Kansas City, Missouri
64111,  acts as  transfer  agent and  dividend  paying  agent for the funds.  It
provides physical facilities,  computer hardware and software and personnel, for
the day-to-day  administration of the funds and of the advisor. The advisor pays
American Century Services Corporation for such services.

From time to time,  special services may be offered to shareholders who maintain
higher  share  balances in our family of funds.  These  services may include the
waiver of minimum investment requirements, expedited confirmation of shareholder
transactions,  newsletters and a team of personal representatives.  Any expenses
associated with these special services will be paid by the manager.

Pursuant to a Sub-Administration  Agreement with the manager, Funds Distributor,
Inc. (FDI) serves as the  Co-Administrator  for the fund. FDI is responsible for
(i)  providing  certain  officers  of the  fund and (ii)  reviewing  and  filing
marketing and sales  literature on behalf of the fund.  The fees and expenses of
FDI are paid by the manager out of its unified fee.

*DISTRIBUTOR

The funds'  shares are  distributed  by Funds  Distributors,  Inc., a registered
broker-dealer.  The distributor is a wholly owned indirect  subsidiary of Boston
Institutional  Group,  Inc. The distributor's  principal  business address is 60
State Street, Suite 1300, Boston, Massachusetts 02109.

The  distributor  is  the  principal  underwriter  of  the  funds'  shares.  The
distributor makes a continuous,  best efforts underwriting of the funds' shares.
This means that the distributor has no liability for unsold shares.

OTHER SERVICE PROVIDERS

*CUSTODIAN BANKS

Chase Manhattan Bank, 770 Broadway,  10th Floor,  New York, New York 10003-9598,
and Commerce Bank, N.A., 1000 Walnut,  Kansas City,  Missouri 64105, each serves
as  custodian  of the  assets  of the  funds.  The  custodians  take  no part in
determining the investment policies of the funds or in deciding which securities
are purchased or sold by the funds.  The funds,  however,  may invest in certain
obligations of the custodians and may purchase or sell certain  securities  from
or to the custodians.

*INDEPENDENT AUDITORS

Deloitte & Touche LLP is the  independent  auditor of the funds.  The address of
Deloitte & Touche LLP is 1010 Grand Avenue,  Kansas City, Missouri 64106. As the
independent auditor of the funds,  Deloitte & Touche provides services including
(1) audit of the annual financial statements, (2) assistance and consultation in
connection  with SEC  filings  and (3) review of the annual  federal  income tax
return filed for each fund.

Baird, Kurtz & Dobson, 1100 Main Street,  Kansas City, Missouri 64105, served as
independent auditors for the funds for the period ended October 31, 1996 and for
all prior periods.

BROKERAGE ALLOCATION

*SELECT,  HERITAGE,  GROWTH,  ULTRA, VISTA,  TAX-MANAGED VALUE, GIFTRUST AND THE
EQUITY PORTION OF BALANCED

Under the management  agreement  between the funds and the manager,  the manager
has the  responsibility of selecting brokers to execute portfolio  transactions.
The funds' policy is to secure the most favorable prices and execution of orders
on its  portfolio  transactions.  So long as that policy is met, the manager may
take into consideration the factors discussed below when selecting brokers.

The manager receives  statistical and other information and services,  including
research,  without  cost from brokers and dealers.  The manager  evaluates  such
information and services,  together with all other information that it may have,
in  supervising  and  managing  the  investments  of  the  funds.  Because  such
information  and services  may vary in amount,  quality and  reliability,  their
influence in selecting brokers varies from none to very substantial. The manager
proposes to continue to place some of the funds' brokerage  business with one or
more brokers who provide information and services. Such information and services
will be in addition to and not in lieu of services  required to be  performed by
the manager.  The manager does not utilize brokers that provide such information
and  services  for the purpose of reducing  the  expense of  providing  required
services to the funds.

In the years ended October 31, 1998, 1997 and 1996, the brokerage commissions of
each fund were as follows:

<TABLE>
- --------------------- ----------------------------- ----------------------------- -----------------------------
             FUND                 1998                          1997                          1996
- --------------------- ----------------------------- ----------------------------- -----------------------------
<S>                                                                  <C>                           <C>        
Select                                                               $ 6,524,088                   $ 8,157,658
Heritage                                                               1,649,678                     3,093,265
Growth                                                                 5,774,694                    13,577,767
Ultra                                                                 33,165,434                    22,985,927
Vista                                                                  2,569,051                     2,246,175
Tax-Managed Value                                                            N/A                           N/A
Giftrust                                                               1,329,818                       886,460
Balanced                                                                 957,506                     1,038,530
New Opportunities                                                        264,078                           N/A
</TABLE>

The  brokerage  commissions  paid by the funds may exceed  those  which  another
broker might have charged for  effecting the same  transactions,  because of the
value of the brokerage and research  services  provided by the broker.  Research
services   furnished  by  brokers  through  whom  the  funds  effect  securities
transactions  may be used by the manager in servicing all of its  accounts,  and
not all such  services may be used by the manager in managing the  portfolios of
the funds.

The staff of the SEC has expressed the view that the best price and execution of
over-the-counter  transactions in portfolio securities may be secured by dealing
directly  with  principal  market  makers,   thereby  avoiding  the  payment  of
compensation to another broker. In certain situations, the officers of the funds
and the manager believe that the facilities,  expert personnel and technological
systems  of a broker  often  enable  the  funds to secure as good a net price by
dealing with a broker instead of a principal market maker, even after payment of
the compensation to the broker.  The funds regularly place its  over-the-counter
transactions  with  principal  market  makers,  but may also deal on a brokerage
basis when utilizing electronic trading networks or as circumstances warrant.

*LIMITED-TERM   BOND,   INTERMEDIATE-TERM   BOND,   BOND,   HIGH-YIELD  AND  THE
FIXED-INCOME PORTION OF BALANCED

Under the management  agreement  between the funds and the advisor,  the advisor
has the  responsibility  of selecting  brokers and dealers to execute  portfolio
transactions.  In many  transactions,  the  selection of the broker or dealer is
determined by the  availability of the desired  security and its offering price.
In other  transactions,  the  selection of broker or dealer is a function of the
selection  of  market  and the  negotiation  of price,  as well as the  broker's
general  execution and  operational  and financial  capabilities  in the type of
transaction involved. The advisor will seek to obtain prompt execution of orders
at the most favorable  prices or yields.  The advisor may choose to purchase and
sell portfolio  securities to and from dealers who provide services or research,
statistical  and  other  information  to the  funds  and to  the  advisor.  Such
information  or services  will be in addition to and not in lieu of the services
required to be performed  by the  advisor,  and the expenses of the advisor will
not  necessarily  be  reduced as a result of the  receipt  of such  supplemental
information.

INFORMATION ABOUT FUND SHARES

Each of the 13  funds  named  on the  front  of  this  Statement  of  Additional
Information is a series of shares issued by the  registrant,  ACMF. In addition,
each series (or fund) may be divided into separate classes.  See "MULTIPLE CLASS
STRUCTURE"  that  follows.  Additional  funds and classes may be added without a
shareholder vote.

Each fund votes separately on matters  affecting that fund  exclusively.  Voting
rights are not  cumulative,  so that  investors  holding more than 50% of ACMF's
(i.e., all funds') outstanding shares may be able to elect a Board of Directors.
ACMF instituted  dollar-based  voting,  meaning that the number of votes you are
entitled to is based upon the dollar amount of your investment.  The election of
directors is determined by the votes received from all ACMF shareholders without
regard to  whether  a  majority  of  shares of any one fund  voted in favor of a
particular nominee or all nominees as a group.

The assets  belonging to each series or class of shares are held  separately  by
the  custodian  and the shares of each series or class  represent  a  beneficial
interest in the  principal,  earnings and profit (or losses) of  investment  and
other assets held for each series or class. Your rights as a shareholder are the
same for all series or class of securities unless otherwise stated. Within their
respective series or class, all shares have equal redemption rights. Each share,
when issued, is fully paid and non-assessable.

In the event of complete  liquidation or dissolution of the funds,  shareholders
of each series or class of shares shall be entitled to receive, pro rata, all of
the assets less the liabilities of that series or class.

Each shareholder has rights to dividends and distributions  declared by the fund
he or she owns and to the net  assets  of such  fund  upon  its  liquidation  or
dissolution  proportionate  to his or her share ownership  interest in the fund.
Shares  of each  fund  have  equal  voting  rights,  although  each  fund  votes
separately on matters affecting that fund exclusively.

MULTIPLE CLASS STRUCTURE

The funds' Board of Directors has adopted a multiple class plan (the "Multiclass
Plan")  pursuant to Rule 18f-3  adopted by the SEC.  Pursuant to such plan,  the
funds  may  issue  up  to  four  classes  of  shares:   an  Investor  Class,  an
Institutional  Class, a Service Class and an Advisor Class.  Not all funds offer
all four classes.

The Investor Class is made available to investors  directly  without any load or
commission, for a single unified management fee. The Institutional,  Service and
Advisor  Classes are made  available to  institutional  shareholders  or through
financial  intermediaries  that do not require the same level of shareholder and
administrative  services from the manager as Investor Class  shareholders.  As a
result,  the manager is able to charge these classes a lower  management fee. In
addition to the management fee,  however,  Service Class shares are subject to a
Shareholder  Services  Plan  (described  beginning  on page XX), and the Advisor
Class shares are subject to a Master Distribution and Shareholder  Services Plan
(described  beginning  on page XX).  Both plans have been  adopted by the funds'
Board of Directors and initial shareholder in accordance with Rule 12b-1 adopted
by the SEC under the Investment Company Act.

*RULE 12B-1

Rule 12-1  permits an  investment  company to pay expenses  associated  with the
distribution  of its shares in accordance  with a plan adopted by the investment
company's Board of Directors and approved by its shareholders.  Pursuant to such
rule, the Board of Directors and initial shareholder of the funds' Service Class
and Advisor Class have approved and entered into a  Shareholder  Services  Plan,
with respect to the Service Class,  and a Master  Distribution  and  Shareholder
Services Plan,  with respect to the Advisor Class  (collectively,  the "Plans").
Both Plans are described below.

In adopting the Plans, the Board of Directors (including a majority of directors
who are not  "interested  persons"  of the funds [as  defined in the  Investment
Company Act], hereafter referred to as the "independent  directors")  determined
that there was a reasonable  likelihood  that the Plans would  benefit the funds
and  the  shareholders  of  the  affected  classes.   Pursuant  to  Rule  12b-1,
information  with respect to revenues and expenses  under the Plans is presented
to the Board of Directors quarterly for its consideration in connection with its
deliberations as to the continuance of the Plans.  Continuance of the Plans must
be approved by the Board of Directors  (including a majority of the  independent
directors)  annually.  The  Plans  may be  amended  by a vote  of the  Board  of
Directors (including a majority of the independent  directors),  except that the
Plans may not be  amended  to  materially  increase  the  amount to be spent for
distribution  without  majority  approval of the  shareholders  of the  affected
class.  The Plans terminate  automatically in the event of an assignment and may
be terminated upon a vote of a majority of the independent  directors or by vote
of a majority of the outstanding voting securities of the affected class.

All fees paid under the plans will be made in accordance  with Section 26 of the
Rules of Fair Practice of the National Association of Securities Dealers.

*SHAREHOLDER SERVICES PLAN

As described in the  Prospectuses,  the funds'  Service  Class of shares is made
available to participants in employer-sponsored  retirement or savings plans and
to  persons  purchasing  through  financial   intermediaries,   such  as  banks,
broker-dealers  and  insurance   companies.   In  such  circumstances,   certain
recordkeeping  and  administrative  services  that are  provided  by the  funds'
transfer  agent for the Investor Class  shareholders  may be performed by a plan
sponsor  (or its agents) or by a  financial  intermediary.  To enable the funds'
shares to be made available through such plans and financial intermediaries, and
to  compensate  them for such  services,  the funds'  manager  has  reduced  its
management  fee by 0.25% per annum with respect to the Service  Class shares and
the funds' Board of Directors has adopted a Shareholder  Services Plan. Pursuant
to the  Shareholder  Services  Plan,  the Service Class shares pay a shareholder
services  fee of 0.25%  annually of the  aggregate  average  daily assets of the
funds' Service Class shares.

The  manager  and  the  funds'   distributor,   Funds  Distributor,   Inc.  (the
"Distributor")  enter into contracts with each  financial  intermediary  for the
provision of certain shareholder  services and utilizes the shareholder services
fees received  under the  Shareholder  Services  Plan to pay for such  services.
Payments may be made for a variety of shareholder services,  including,  but are
not limited to, (a) receiving, aggregating and processing purchase, exchange and
redemption  requests  from  beneficial  owners  (including  contract  owners  of
insurance  products  that utilize the funds as underlying  investment  media) of
shares  and  placing   purchase,   exchange  and  redemption   orders  with  the
Distributor;  (b) providing  shareholders with a service that invests the assets
of their accounts in shares pursuant to specific or pre-authorized instructions;
(c)  processing  dividend  payments  from a fund on behalf of  shareholders  and
assisting  shareholders in changing dividend options,  account  designations and
addresses; (d) providing and maintaining elective services such as check writing
and wire transfer services;  (e) acting as shareholder of record and nominee for
beneficial owners; (f) maintaining account records for shareholders and/or other
beneficial  owners;  (g) issuing  confirmations of  transactions;  (h) providing
subaccoutning  with respect to shares  beneficially  owned by customers of third
parties  or  providing  the   information  to  a  fund  as  necessary  for  such
subaccounting;  (i) preparing and forwarding shareholder communications from the
funds (such as proxies,  shareholder reports,  annual and semi-annual  financial
statements and dividend,  distribution  and tax notices) to shareholders  and/or
other  beneficial  owners;  (j)  providing  other  similar   administrative  and
sub-transfer agency services; and (k) paying "service fees" for the provision of
personal, continuing services to investors, as contemplated by the Rules of Fair
Practice  of the NASD  (collectively  referred  to as  "Shareholder  Services").
Shareholder  Services do not include  those  activities  and  expenses  that are
primarily intended to result in the sale of additional shares of the funds.

*MASTER DISTRIBUTION AND SHAREHOLDER SERVICES PLAN

As described in the  Prospectuses,  the funds'  Advisor Class of shares are also
made available to participants in employer-sponsored retirement or savings plans
and to  persons  purchasing  through  financial  intermediaries,  such as banks,
broker-dealers  and insurance  companies.  The Distributor enters into contracts
with various  banks,  broker-dealers,  insurance  companies and other  financial
intermediaries  with respect to the sale of the funds'  shares and/or the use of
the funds' shares in various  investment  products or in connection with various
financial services.

As with the Service Class,  certain  recordkeeping and  administrative  services
that  are  provided  by  the  funds'  transfer  agent  for  the  Investor  Class
shareholders  may be  performed  by a  plan  sponsor  (or  its  agents)  or by a
financial  intermediary  for  shareholders  in the Advisor Class. In addition to
such  services,  the  financial   intermediaries  provide  various  distribution
services.

To  enable  the  funds'  shares  to be made  available  through  such  plans and
financial  intermediaries,  and to compensate them for such services, the funds'
manager has reduced its  management  fee by 0.25% per annum with  respect to the
Advisor  Class  shares and the funds'  Board of  Directors  has adopted a Master
Distribution and Shareholder Services Plan (the "Distribution  Plan").  Pursuant
to such  Plan,  the  Advisor  Class  shares pay a fee of 0.50%  annually  of the
aggregate  average daily assets of the funds'  Advisor  Class  shares,  0.25% of
which is paid for Shareholder  Services (as described  above) and 0.25% of which
is paid for distribution services.

Distribution  services include any activity  undertaken or expense incurred that
is  primarily  intended  to result in the sale of Advisor  Class  shares,  which
services  may  include  but  are  not  limited  to,  (a) the  payment  of  sales
commissions,  on going  commissions  and other  payments  to  brokers,  dealers,
financial  institutions  or others who sell  Advisor  Class  shares  pursuant to
Selling  Agreements;  (b)  compensation to registered  representatives  or other
employees of  Distributor  who engage in or support  distribution  of the funds'
Advisor Class shares; (c) compensation to, and expenses  (including overhead and
telephone  expenses)  of,   Distributor;   (d)  the  printing  of  prospectuses,
statements  of  additional  information  and  reports  for other  than  existing
shareholders; (e) the preparation, printing and distribution of sales literature
and advertising  materials  provided to the funds'  shareholders and prospective
shareholders;  (f)  receiving  and  answering  correspondence  from  prospective
shareholders,  including  distributing  prospectuses,  statements  of additional
information,  and shareholder reports; (g) the providing of facilities to answer
questions  from  prospective  investors  about fund shares;  (h) complying  with
federal and state  securities  laws  pertaining to the sale of fund shares;  (i)
assisting  investors in completing  application forms and selecting dividend and
other  account  options;  (j) the  providing of other  reasonable  assistance in
connection  with  the  distribution  of  fund  shares;  (k) the  organizing  and
conducting  of sales  seminars  and  payments in the form of  transactional  and
compensation  or promotional  incentives;  (l) profit on the foregoing;  (m) the
payment of "service fees" for the provision of personal,  continuing services to
investors,  as  contemplated  by the Rules of Fair  Practice of the NASD and (n)
such other distribution and services activities as the manager determines may be
paid for by the funds  pursuant to the terms of this Agreement and in accordance
with Rule 12b-1 of the Investment Company Act.

BUYING AND SELLING FUND SHARES

Information about buying, selling and exchanging fund shares is contained in the
American  Century  Investor  Services Guide. The guide is available to investors
without charge and may be obtained by calling us.

VALUATION OF A FUND'S SECURITIES

Each fund's  share  price,  also  referred to as its net asset value  (NAV),  is
calculated  as of the close of  business  of the New York  Stock  Exchange  (the
Exchange),  usually at 3 p.m.  Central  time each day the  Exchange  is open for
business.  The Exchange has designated the following  holiday closings for 1999:
New Year's Day  (observed),  Martin Luther King Jr. Day,  Presidents'  Day, Good
Friday,  Memorial  Day,  Independence  Day,  Labor  Day,  Thanksgiving  Day  and
Christmas Day (observed). Although the funds expect the same holiday schedule to
be observed in the future,  the Exchange may modify its holiday  schedule at any
time.

The advisor  typically  completes  its trading on behalf of each fund in various
markets before the Exchange closes for the day. Each fund's NAV is calculated by
adding  the  value of all  portfolio  securities  and  other  assets,  deducting
liabilities  and  dividing  the  result by the  number  of  shares  outstanding.
Expenses and interest earned on portfolio securities are accrued daily.

The  portfolio  securities  of the fund,  except as otherwise  noted,  listed or
traded on a domestic  securities  exchange  are valued at the last sale price on
that  exchange.  Portfolio  securities  primarily  traded on foreign  securities
exchanges  are  generally  valued  at  the  preceding  closing  values  of  such
securities on the exchange where primarily traded. If no sale is reported, or if
local convention or regulation so provides, the mean of the latest bid and asked
prices is used.  Depending on local convention or regulation,  securities traded
over-the-counter  are priced at the mean of the latest bid and asked prices,  or
at the last sale  price.  When  market  quotations  are not  readily  available,
securities and other assets are valued at fair value as determined in accordance
with procedures adopted by the Board of Directors.

Debt securities not traded on a principal securities exchange are valued through
valuations obtained from a commercial pricing service or at the most recent mean
of the bid and asked prices  provided by investment  dealers in accordance  with
procedures established by the Board of Directors.

Because there are hundreds of thousands of municipal issues outstanding, and the
majority of them do not trade daily, the prices provided by pricing services for
these types of securities are generally determined without regard to bid or last
sale prices.  In valuing  securities,  the pricing services  generally take into
account institutional trading activity, trading in similar groups of securities,
and any  developments  related to specific  securities.  The methods used by the
pricing  service and the valuations so  established  are reviewed by the advisor
under the general  supervision of the Board of Directors.  There are a number of
pricing services available,  and the advisor, on the basis of ongoing evaluation
of these services,  may use other pricing services or discontinue the use of any
pricing service in whole or in part.

Securities  maturing within 60 days of the valuation date may be valued at cost,
plus or minus any amortized  discount or premium,  unless the trustees determine
that this would not result in fair valuation of a given  security.  Other assets
and securities for which quotations are not readily available are valued in good
faith at their fair value using methods approved by the Board of Directors.

The value of an  exchange-traded  foreign security is determined in its national
currency  as of the close of  trading  on the  foreign  exchange  on which it is
traded or as of the close of business on the New York Stock Exchange, if that is
earlier.  That value is then  exchanged  to dollars  at the  prevailing  foreign
exchange rate.

Trading in  securities  on European  and Far Eastern  securities  exchanges  and
over-the-counter markets is normally completed at various times before the close
of  business on each day that the New York Stock  Exchange is open.  If an event
were to occur after the value of a security was  established  but before the net
asset value per share was  determined  that was likely to materially  change the
net asset value,  then that security would be valued at fair value as determined
in accordance with procedures adopted by the Board of Directors.

Trading of these  securities in foreign  markets may not take place on every New
York Stock Exchange business day. In addition, trading may take place in various
foreign  markets on Saturdays or on other days when the New York Stock  Exchange
is not  open  and on  which  the  fund's  net  asset  value  is not  calculated.
Therefore,  such  calculation  does not take  place  contemporaneously  with the
determination  of the prices of many of the  portfolio  securities  used in such
calculation  and the value of the fund's  portfolio may be affected on days when
shares of the fund may not be purchased or redeemed.

MULTIPLE CLASS PERFORMANCE ADVERTISING

Pursuant to the Multiple Class Plan, the funds may issue  additional  classes of
existing  funds or  introduce  new funds with  multiple  classes  available  for
purchase.  To the extent a new class is added to an existing  fund,  the manager
may, in compliance with SEC and NASD rules,  regulations and guidelines,  market
the new class of shares  using the  historical  performance  information  of the
original class of shares. When quoting performance information for the new class
of shares for  periods  prior to the first full  quarter  after  inception,  the
original class'  performance will be restated to reflect the expenses of the new
class and for  periods  after the first full  quarter  after  inception,  actual
performance of the new class will be used.

TAXES

*FEDERAL INCOME TAXES

Each fund intends to qualify annually as a "regulated  investment company" under
Subchapter M of the Internal  Revenue Code of 1986, as amended (the "Code").  By
so  qualifying,  a fund will be exempt from  federal  income taxes to the extent
that it  distributes  substantially  all of its net  investment  income  and net
realized capital gains (if any) to shareholders. If a fund fails to qualify as a
regulated  investment  company,  it  will be  liable  for  taxes,  significantly
reducing its distributions to shareholders and eliminating shareholders' ability
to treat  distributions  of the funds in the manner  they were  realized  by the
funds.

If fund shares are purchased  through  taxable  accounts,  distributions  of net
investment  income  and net  short-term  capital  gains  are  taxable  to you as
ordinary income. The dividends from net income may quality for the 70% dividends
received  deduction  for  corporations  to the extent  that the fund held shares
receiving the dividend for more than 45 days. Distributions from gains on assets
held  greater  than 12 months but not more than 18 months (28% rate gain) and/or
assets held  greater  than 18 months  (20% rate gain) are  taxable as  long-term
gains  regardless of the length of time you have held the shares.  However,  you
should note that any loss  realized  upon the sale or  redemption of shares held
for six months or less will be treated as a long-term capital loss to the extent
of any  distributions  of  long-term  capital gain (28% or 20% rate gain) to you
with respect to such shares.

Dividends and interest received by a fund on foreign securities may give rise to
withholding  and other  taxes  imposed by  foreign  countries.  Tax  conventions
between  certain  countries and the United  States may reduce or eliminate  such
taxes.  Foreign  countries  generally  do not impose  taxes on capital  gains in
respect of investments by non-resident investors.
The foreign taxes paid by a fund will reduce its dividends.

If more  than  50% of the  value  of a fund's  total  assets  at the end of each
quarter of its fiscal year consists of securities of foreign  corporations,  the
fund may qualify for and make an election with the Internal Revenue Service with
respect to such  fiscal  year so that fund  shareholders  may be able to claim a
foreign tax credit in lieu of a deduction  for foreign  income taxes paid by the
fund.  If such an election is made,  the foreign  taxes paid by the fund will be
treated as income  received by you. In order for the  shareholder to utilize the
foreign  tax  credit,  the mutual fund shares must have been held for 16 days or
more during the 30-day period,  beginning 15 days prior to the ex-dividend  date
for the mutual fund shares.  The mutual fund must meet a similar  holding period
requirement  with  respect  to  foreign   securities  to  which  a  dividend  is
attributable.  Any portion of the foreign tax credit  which is  ineligible  as a
result of the fund not meeting the holding period requirement will be separately
disclosed and may be eligible as an itemized deduction.

If a fund purchases the securities of certain foreign investment funds or trusts
called passive foreign investment companies (PFIC), capital gains on the sale of
such  holdings will be deemed to be ordinary  income  regardless of how long the
fund holds its investment.  The fund may also be subject to corporate income tax
and an interest charge on certain  dividends and capital gains earned from these
investments,  regardless  of whether  such income and gains are  distributed  to
shareholders.  In the  alternative,  the fund may elect to recognize  cumulative
gains on such  investments  as of the last day of its fiscal year and distribute
it to shareholders.  Any distribution attributable to a PFIC is characterized as
ordinary income.

Distributions are taxable to you regardless of whether they are taken in cash or
reinvested, even if the value of your shares is below your cost. If you purchase
shares  shortly  before  a  distribution,  you  must  pay  income  taxes  on the
distribution,  even though the value of your investment (plus cash received,  if
any) will not have  increased.  In  addition,  the  share  price at the time you
purchase  shares may  include  unrealized  gains in the  securities  held in the
investment portfolio of the fund. If these portfolio securities are subsequently
sold and the gains are realized,  they will, to the extent not offset by capital
losses, be paid to you as a distribution of capital gains and will be taxable to
you as short-term or long-term capital gains (28% and/or 20% rate gain).

In  January  of the year  following  the  distribution,  if you own  shares in a
taxable account, you will receive a Form 1099-DIV notifying you of the status of
your distributions for federal income tax purposes.

If you have not complied with certain  provisions  of the Internal  Revenue Code
and Regulations, either we or your financial intermediary is required by federal
law to  withhold  and remit to the IRS 31% of  reportable  payments  (which  may
include  dividends,   capital  gains   distributions  and  redemptions).   Those
regulations  require  you to  certify  that the  Social  Security  number or tax
identification number you provide is correct and that you are not subject to 31%
withholding for previous  under-reporting  to the IRS. You will be asked to make
the appropriate certification on your application.  Payments reported by us that
omit your Social Security number or tax identification number will subject us to
a penalty  of $50,  which will be charged  against  your  account if you fail to
provide  the  certification  by  the  time  the  report  is  filed,  and  is not
refundable.

Redemption  of  shares  of a fund  (including  redemption  made  in an  exchange
transaction)  will be a taxable  transaction for federal income tax purposes and
shareholders  will  generally  recognize  gain or loss in an amount equal to the
difference  between  the basis of the shares and the amount  received.  Assuming
that  shareholders hold such shares as a capital asset, the gain or loss will be
a capital gain or loss and will generally be considered long term subject to tax
at a maximum rate of 28% (28% rate  gain/loss)  if  shareholders  have held such
shares  for a period of more than 12 months  but no more than 18 months and long
term  subject  to tax at a  maximum  rate  of  20%,  minimum  of 10%  (20%  rate
gain/loss)  if  shareholders  have held such shares for a period of more than 18
months. If a loss is realized on the redemption of fund shares, the reinvestment
in additional  fund shares within 30 days before or after the  redemption may be
subject to the "wash sale" rules of the Code, resulting in a postponement of the
recognition of such loss for federal income tax purposes.

*STATE AND LOCAL TAXES

Distributions  may also be  subject to state and local  taxes,  even if all or a
substantial  part  of such  distributions  are  derived  from  interest  on U.S.
government  obligations  which,  if you received them directly,  would be exempt
from state income tax. However, most but not all states allow this tax exemption
to pass  through  to fund  shareholders  when a fund pays  distributions  to its
shareholders.  You should  consult your tax advisor about the tax status of such
distributions in your own state.

HOW FUND PERFORMANCE INFORMATION IS CALCULATED

The funds may quote  performance in various ways. Fund  performance may be shown
by presenting one or more performance  measurements,  including cumulative total
return, average annual total return or yield.

All performance  information advertised by the funds is historical in nature and
is not  intended to represent or  guarantee  future  results.  The value of fund
shares when redeemed may be more or less than their original cost.

*EQUITY FUNDS

Total returns quoted in advertising and sales literature  reflect all aspects of
a fund's return,  including the effect of reinvesting dividends and capital gain
distributions (if any) and any change in the fund's NAV during the period.

Average annual total returns are calculated by determining the growth or decline
in value  of a  hypothetical  historical  investment  in a fund  during a stated
period and then calculating the annually  compounded  percentage rate that would
have produced the same result if the rate of growth or decline in value had been
constant  throughout the period.  For example, a cumulative total return of 100%
over 10 years  would  produce an average  annual  return of 7.18%,  which is the
steady  annual  rate that would equal 100%  growth on a  compounded  basis in 10
years.  While average  annual total returns are a convenient  means of comparing
investment alternatives, investors should realize that the funds' performance is
not constant over time, but changes from  year-to-year,  and that average annual
total  returns  represent  averaged  figures as  opposed to actual  year-to-year
performance.

The following  tables set forth the average  annual total return for the various
classes of the equity funds and Balanced for the one-, five- and 10-year periods
(or the period since  inception)  ended  October 31,  1998,  the last day of the
funds' fiscal year.

<TABLE>
AVERAGE ANNUAL TOTAL RETURNS - INVESTOR CLASS
- ------------------------------------------------------ ---------------- ---------------- ---------------- ----------------
                                                                                                          FROM INCEPTION
FUND                                                       1 YEAR           5 YEARS         10 YEARS
- ------------------------------------------------------ ---------------- ---------------- ---------------- ----------------
<S>                                                    <C>                 <C>            <C>            <C>
Growth1
Ultra2
Select3
Vista4
Heritage5
Balanced6
Giftrust7
New Opportunities8
- ------------------------------------------------------ ---------------- ---------------- ---------------- ----------------
(1) Commenced operations on October 31, 1958.
(2) Commenced operations on November 2, 1981.
(3) Commenced operations on October 31, 1958.
(4) Commenced operations on November 25, 1983.
(5) Commenced operations on November 10, 1987.
(6) Commenced operations on October 20, 1988.
(7) Commenced operations on November 25, 1983.
(8) Commenced operations on December 26, 1996.



AVERAGE ANNUAL TOTAL RETURNS - INSTITUTIONAL CLASS
- ------------------------------------------------------ ---------------- ---------------- ---------------- ----------------
                                                                                                          FROM INCEPTION
FUND                                                       1 YEAR           5 YEARS         10 YEARS
- ------------------------------------------------------ ---------------- ---------------- ---------------- ----------------
Growth1
Ultra2
Select3
Vista4
Heritage5
(1) Commenced operations on June 16, 1997.
(2) Commenced operations on November 14, 1996.
(3) Commenced operations on March 13, 1997.
(4) Commenced operations on November 14, 1996.
(5) Commenced operations on June 16, 1997.


AVERAGE ANNUAL TOTAL RETURNS - ADVISOR CLASS
- ------------------------------------------------------ ---------------- ---------------- ---------------- ----------------
                                                                                                          FROM INCEPTION
FUND                                                       1 YEAR           5 YEARS         10 YEARS
- ------------------------------------------------------ ---------------- ---------------- ---------------- ----------------
Growth1
Ultra2
Select3
Vista4
Heritage5
Balanced6
(1) Commenced operations on June 4, 1997.
(2) Commenced operations on October 1, 1996.
(3) Commenced operations on August 7, 1997.
(4) Commenced operations on October 1, 1996.
(5) Commenced operations on July 11, 1997.
(6) Commenced operations on January 6, 1997.
</TABLE>


In addition to average annual total returns,  each fund may quote  unaveraged or
cumulative total returns  reflecting the simple change in value of an investment
over a stated  period,  including  periods  other  than one,  five and 10 years.
Average annual and  cumulative  total returns may be quoted as percentages or as
dollar  amounts  and may be  calculated  for a single  investment,  a series  of
investments,  or a series of redemptions over any time period. Total returns may
be broken down into their  components of income and capital  (including  capital
gains and  changes  in share  price) to  illustrate  the  relationship  of these
factors and their contributions to total return.

*FIXED INCOME FUNDS AND BALANCED

Yield is calculated by adding over a 30-day (or  one-month)  period all interest
and  dividend  income (net of fund  expenses)  calculated  on each day's  market
values,  dividing  this sum by the  average  number of fund  shares  outstanding
during the period, and expressing the result as a percentage of the fund's share
price on the last day of the 30-day (or  one-month)  period.  The  percentage is
then annualized. Capital gains and losses are not included in the calculation.

The following  table sets forth yield  quotations for the various classes of the
fixed income funds and  Balanced for the 30-day  period ended  October 31, 1998,
the last day of the fiscal year pursuant to  computation  methods  prescribed by
the SEC.


<TABLE>
- ---------------------------- --------------------------------------- ---------------------------------------
                  FUND                   INVESTOR CLASS                          ADVISOR CLASS
- ---------------------------- --------------------------------------- ---------------------------------------
- ---------------------------- --------------------------------------- ---------------------------------------
<S>                             <C>                                 <C> 
Limited-Term Bond
- ---------------------------- --------------------------------------- ---------------------------------------
- ---------------------------- --------------------------------------- ---------------------------------------
Intermediate-Term Bond
- ---------------------------- --------------------------------------- ---------------------------------------
- ---------------------------- --------------------------------------- ---------------------------------------
Bond
- ---------------------------- --------------------------------------- ---------------------------------------
- ---------------------------- --------------------------------------- ---------------------------------------
Balanced
- ---------------------------- --------------------------------------- ---------------------------------------
- ---------------------------- --------------------------------------- ---------------------------------------
High-Yield
- ---------------------------- --------------------------------------- ---------------------------------------


The fixed income funds may also elect to advertise  cumulative  total return and
average annual total return, computed as described above.

The following  table shows the  cumulative  total return and the average  annual
total  return  of the  Investor  Class of the fixed  income  funds  since  their
respective dates of inception (as noted) through October 31, 1998.


- ----------------------------------- ---------------------------- ----------------------------- --------------------------
               FUND                   CUMULATIVE TOTAL RETURN    AVERAGE ANNUAL TOTAL RETURN       DATE OF INCEPTION
                                          SINCE INCEPTION
- ----------------------------------- ---------------------------- ----------------------------- --------------------------
- ----------------------------------- ---------------------------- ----------------------------- --------------------------
Limited-Term Bond
- ----------------------------------- ---------------------------- ----------------------------- --------------------------
- ----------------------------------- ---------------------------- ----------------------------- --------------------------
Intermediate-Term Bond
- ----------------------------------- ---------------------------- ----------------------------- --------------------------
- ----------------------------------- ---------------------------- ----------------------------- --------------------------
Bond
- ----------------------------------- ---------------------------- ----------------------------- --------------------------
- ----------------------------------- ---------------------------- ----------------------------- --------------------------
Balanced
- ----------------------------------- ---------------------------- ----------------------------- --------------------------
- ----------------------------------- ---------------------------- ----------------------------- --------------------------
High-Yield
- ----------------------------------- ---------------------------- ----------------------------- --------------------------
</TABLE>


*ADDITIONAL PERFORMANCE COMPARISONS

The funds'  performance  may be compared  with the  performance  of other mutual
funds  tracked by mutual  fund rating  services or with other  indexes of market
performance.  This may include  comparisons with funds that, unlike the American
Century funds, are sold with a sales charge or deferred sales charge. Sources of
economic  data that may be used for such  comparisons  may include,  but are not
limited to, U.S. Treasury bill, note and bond yields,  money market fund yields,
U.S.  government debt and percentage held by foreigners,  the U.S. money supply,
net  free  reserves,  and  yields  on  current-coupon  GNMAs  (source:  Board of
Governors of the Federal Reserve  System);  the federal funds and discount rates
(source:  Federal  Reserve  Bank of New York);  yield  curves for U.S.  Treasury
securities and AA/AAA-rated  corporate  securities (source:  Bloomberg Financial
Markets);  yield curves for AAA-rated  tax-free  municipal  securities  (source:
Telerate);  yield curves for foreign government  securities (sources:  Bloomberg
Financial  Markets and Data  Resources,  Inc.);  total  returns on foreign bonds
(source:  J.P.  Morgan  Securities  Inc.);  various U.S. and foreign  government
reports;  the junk bond market (source:  Data Resources,  Inc.); the CRB Futures
Index  (source:  Commodity  Index Report);  the price of gold  (sources:  London
a.m./p.m.  fixing and New York Comex Spot Price); rankings of any mutual fund or
mutual fund category tracked by Lipper Analytical Services, Inc. or Morningstar,
Inc.;  mutual  fund  rankings   published  in  major,   nationally   distributed
periodicals;  data  provided  by  the  Investment  Company  Institute;  Ibbotson
Associates,  Stocks, Bonds, Bills, and Inflation;  major indexes of stock market
performance;  and  indexes and  historical  data  supplied  by major  securities
brokerage or investment advisory firms. The funds also may utilize reprints from
newspapers  and magazines  furnished by third  parties to illustrate  historical
performance or to provide general information about the funds.

*PERMISSIBLE ADVERTISING INFORMATION

From  time to  time,  the  funds  may,  in  addition  to any  other  permissible
information,  include the  following  types of  information  in  advertisements,
supplemental  sales literature and reports to  shareholders:  (1) discussions of
general economic or financial principles (such as the effects of compounding and
the benefits of dollar-cost  averaging);  (2)  discussions  of general  economic
trends;  (3)  presentations of statistical data to supplement such  discussions;
(4)  descriptions of past or anticipated  portfolio  holdings for one or more of
the funds;  (5)  descriptions  of investment  strategies  for one or more of the
funds;  (6)  descriptions  or  comparisons  of various  savings  and  investment
products  (including,  but  not  limited  to,  qualified  retirement  plans  and
individual  stocks and  bonds),  which may or may not  include  the  funds;  (7)
comparisons of investment products (including the funds) with relevant market or
industry  indices  or other  appropriate  benchmarks;  (8)  discussions  of fund
rankings or ratings by recognized  rating  organizations;  and (9)  testimonials
describing  the  experience  of persons that have invested in one or more of the
funds. The funds may also include calculations, such as hypothetical compounding
examples, which describe hypothetical investment results in such communications.
Such performance examples will be based on an express set of assumptions and are
not indicative of the performance of any of the funds.

*MULTIPLE CLASS PERFORMANCE ADVERTISING

Pursuant to the Multiple Class Plan, the funds may issue  additional  classes of
existing  funds or  introduce  new funds with  multiple  classes  available  for
purchase.  To the extent a new class is added to an existing  fund,  the manager
may, in compliance with SEC and NASD rules,  regulations and guidelines,  market
the new class of shares  using the  historical  performance  information  of the
original class of shares. When quoting performance information for the new class
of shares for  periods  prior to the first full  quarter  after  inception,  the
original class'  performance will be restated to reflect the expenses of the new
class and for  periods  after the first full  quarter  after  inception,  actual
performance of the new class will be used.

FINANCIAL STATEMENTS

The financial statements of the funds (other than Tax-Managed Value),  including
the  Statements of Assets and  Liabilities  and the Statements of Operations for
the fiscal year ended  October 31, 1998,  and the  Statements  of Changes in Net
Assets for the fiscal years ended October 31, 1997 and 1998, are included in the
Annual  Reports to  shareholders  for the fiscal year ended August 31, 1998. The
report on the financial  highlights  for the fiscal years 1994,  1995,  1996 and
1997 are  included  in the Annual  Reports to  shareholders  for the fiscal year
ended  August  31,  1997,  Each such  Annual  Report is  incorporated  herein by
reference.  You may receive copies of the reports without charge upon request to
American Century at the address and phone number shown on the back cover of this
Statement of Additional Information.

EXPLANATION OF FIXED INCOME SECURITIES RATINGS

As described in the Prospectus, the funds may invest in fixed income securities.
Those investments,  however, are subject to certain credit quality restrictions,
as noted in the Prospectus.  The following is a summary of the rating categories
referenced in the prospectus disclosure.


<TABLE>
BOND RATINGS
- ------------- ------------- ---------------------------------------------------------------------------------------------
    S&P         MOODY'S     DESCRIPTION
- ------------- ------------- ---------------------------------------------------------------------------------------------
<S>         <C>            <C> 
    AAA          Aaa        These are the  highest  ratings  assigned by S&P
                            and Moody's to a debt  obligation  and  indicates an
                            extremely  strong capacity to pay interest and repay
                            principal.
     AA          Aa         Debt rated in this category is considered to have
                            a very  strong  capacity to pay  interest  and repay
                            principal and differs from AAA/Aaa  issues only in a
                            small degree.
     A           A          Debt rated A has a strong capacity to pay interest
                            and repay  principal  although it is  somewhat  more
                            susceptible  to the  adverse  effects  of changes in
                            circumstances  and economic  conditions than debt in
                            higher-rated categories.
    BBB          Baa        Debt  rated  BBB/Baa  is  regarded  as having an
                            adequate   capacity  to  pay   interest   and  repay
                            principal.  Whereas it  normally  exhibits  adequate
                            protection  parameters,  adverse economic conditions
                            or changing circumstances are more likely to lead to
                            a  weakened  capacity  to  pay  interest  and  repay
                            principal   for  debt  in  this   category  than  in
                            higher-rated categories.
     BB            Ba       Debt rated BB/Ba has less near-term vulnerability to
                            default than other speculative issues.
                            However, it faces major ongoing uncertainties or 
                            exposure to adverse business, financial or
                            economic conditions that could lead to inadequate 
                            capacity to meet timely interest and
                            principal payments. The BB rating category also 
                            is used for debt subordinated to senior
                            debt that is assigned an actual or implied BBB- rating.
     B             B        Debt rated B has a greater vulnerability to default 
                            but currently has the capacity to meet
                            interest payments and principal repayments. 
                            Adverse business, financial or economic
                            conditions will likely impair capacity or 
                            willingness to pay interest and repay principal.
                            The B rating category is also used for debt 
                            subordinated to senior debt that is assigned an
                            actual or implied BB/Ba or BB-/Ba3 rating.
    CCC           Caa       Debt rated CCC/Caa has a currently identifiable 
                            vulnerability to default and is dependent
                            upon favorable business, financial and 
                            economic conditions to meet timely payment of
                            interest and repayment of principal. In the 
                            event of adverse business, financial or
                            economic conditions, it is not likely to have 
                            the capacity to pay interest and repay
                            principal. The CCC/Caa rating category is 
                            also used for debt subordinated to senior debt
                            that is assigned an actual or implied B or B-/B3 rating.
     CC            Ca       The rating CC/Ca typically is applied to debt 
                            subordinated to senior debt that is assigned
                            an actual or implied CCC/Caa rating.
     C             C        The  rating  C  typically   is  applied  to  debt
                            subordinated  to senior  debt,  which is assigned an
                            actual  or  implied  CCC-/Caa3  debt  rating.  The C
                            rating  may be used to  cover  a  situation  where a
                            bankruptcy petition has been filed, but debt service
                            payments are continued.
     CI            -        The rating CI is reserved for income bonds on which 
                            no interest is being paid.
     D             D        Debt rated D is in payment default. The D rating 
                            category is used when interest payments or
                            principal payments are not made on the date due 
                            even if the applicable grace period
                            has not expired, unless S&P believes 
                            that such payments will be made during such grace
                            period. The D rating also will be used upon the
                            filing of a bankruptcy petition if debt service
                            payments are jeopardized.
- ------------- ------------- ---------------------------------------------------------------------------------------------

To provide more detailed  indications of credit  quality,  the Standard & Poor's
ratings  from AA to CCC may be modified by the  addition of a plus or minus sign
to show  relative  standing  within  these major rating  categories.  Similarly,
Moody's adds numerical  modifiers (1,2,3) to designate  relative standing within
its major bond rating categories. Fitch Investors Service, Inc. also rates bonds
and uses a ratings system that is substantially similar to that used by Standard
& Poor's.

Commercial Paper Ratings
- ------------- --------------- -------------------------------------------------------------------------------------------
S&P           MOODY'S         DESCRIPTION
- ------------- --------------- -------------------------------------------------------------------------------------------
A-1           Prime-1         This indicates that the degree of safety regarding timely payment is strong. Standard &
              (P-1)           Poor's rates those issues determined to possess extremely strong safety characteristics
                              as A-1+.
A-2           Prime-2         Capacity for timely payment on commercial paper is satisfactory, but the relative degree
              (P-2)           of safety is not as high as for issues designated A-1. Earnings trends and coverage
                              ratios,  while  sound,  will  be more  subject  to variation.  Capitalization characteristics, while
                              still  appropriated,   may  be  more  affected  by external conditions.  Ample alternate liquidity is
                              maintained.
A-3           Prime-3         Satisfactory capacity for timely repayment. Issues that carry this rating are somewhat
              (P-3)           more vulnerable to the adverse changes in circumstances than obligations carrying the
                              higher designations.
- ------------- --------------- -------------------------------------------------------------------------------------------

Note Ratings
- ------------- --------------- -------------------------------------------------------------------------------------------
S&P           MOODY'S         DESCRIPTION
- ------------- --------------- -------------------------------------------------------------------------------------------
SP-1          MIG-1;  VMIG-1  Notes are of the  highest  quality enjoying strong  protection from  established cash
                              flows  of  funds  for  their   servicing  or  from established and  broad-based  access to the market
                              for refinancing, or both.
SP-2          MIG-2; VMIG-2   Notes are of high quality, with margins of protection ample, although not so large as in
                              the preceding group.
SP-3          MIG-3; VMIG-3   Notes are of favorable quality, with all security  elements  accounted for, but lacking
                              the undeniable  strength of the preceding  grades. Market access for refinancing,  in particular,  is
                              likely to be less well established.
SP-4          MIG-4;  VMIG-4  Notes  are  of  adequate  quality, carrying  specific risk but having  protection and
                              not distinctly or predominantly speculative.
- ------------- --------------- -------------------------------------------------------------------------------------------
</TABLE>






More  information  about  the  funds  is  contained  in the  funds'  annual  and
semiannual reports.  These contain more information about the funds' investments
and the market conditions and investment strategies that significantly  affected
the funds'  performance  during the most recent  six-month  fiscal  period.  The
annual and semiannual  reports are incorporated by reference into this SAI. This
means that it is legally part of this SAI.

* You can get the annual and  semiannual  reports for free and ask any questions
about the funds by contacting us at one of the addresses or phone numbers listed
below.

American Century Investments
P.O. Box 419200
Kansas City, Missouri  64141-6200

www.americancentury.com

Investor Services
1-800-345-2021 or 816-531-5575

Automated Information Line
1-800-345-8765

Corporate, Not-for-Profit, Keogh, SEP-, SARSEP-, SIMPLE -IRA and 403(b) Services
1-800-345-3533

Telecommunications Device for Deaf
1-800-634-4113 or 816-444-3485

Fax
816-340-7962

*    If you own or are considering purchasing fund shares through

     *    an employer-sponsored retirement plan
     *    a bank
     *    a broker-dealer
     *    an insurance company
     *    another  financial  intermediary you can get the annual and semiannual
          reports directly from them.

*    You can also get information about the funds from the SEC.

*    In person.  Go to the SEC's Public Reference Room in Washington,  D.C. Call
     1-800-SEC-0330 for information about location and hours of operation.

*    On the internet. Go to www.sec.gov.

*    By mail. Write to Public  Reference  Section of the Securities and Exchange
     Commission,  Washington,  D.C.  20549-6009.  The SEC will  charge a fee for
     copying the documents you request.

Investment Company Act File No. 811-0816
<PAGE>
PART C.   OTHER INFORMATION.

ITEM 23.  Exhibits  (all  exhibits  not filed  herewith  are being  incorporated
          herein by reference)                                                  
          

     (a)  (1)  Articles of Incorporation of Twentieth Century  Investors,  Inc.,
               dated  July  2,  1990  (filed  electronically  as an  Exhibit  to
               Post-Effective  Amendment  No.  73 on Form N-1A on  February  29,
               1996).

          (2)  Articles of Amendment of Twentieth Century Investors, Inc., dated
               November  20,  1990  (filed   electronically  as  an  Exhibit  to
               Post-Effective  Amendment  No.  73 on Form N-1A on  February  29,
               1996).

          (3)  Articles  of Merger  of  Twentieth  Century  Investors,  Inc.,  a
               Maryland  corporation and Twentieth  Century  Investors,  Inc., a
               Delaware   corporation,    dated   February   22,   1991   (filed
               electronically as an Exhibit to  Post-Effective  Amendment No. 73
               on Form N-1A on February 29, 1996).

          (4)  Articles of Amendment of Twentieth Century Investors, Inc., dated
               August  11,   1993  (filed   electronically   as  an  Exhibit  to
               Post-Effective  Amendment  No.  73 on Form N-1A on  February  29,
               1996).

          (5)  Articles  Supplementary  of Twentieth  Century  Investors,  Inc.,
               dated  September 3, 1993 (filed  electronically  as an Exhibit to
               Post-Effective  Amendment  No.  73 on Form N-1A on  February  29,
               1996).

          (6)  Articles  Supplementary  of Twentieth  Century  Investors,  Inc.,
               dated  April 28,  1995  (filed  electronically  as an  Exhibit to
               Post-Effective  Amendment  No.  73 on Form N-1A on  February  29,
               1996).

          (7)  Articles  Supplementary  of Twentieth  Century  Investors,  Inc.,
               dated  November 17, 1995 (filed  electronically  as an Exhibit to
               Post-Effective  Amendment  No.  73 on Form N-1A on  February  29,
               1996).

          (8)  Articles  Supplementary  of Twentieth  Century  Investors,  Inc.,
               dated  January 30, 1996  (filed  electronically  as an Exhibit to
               Post-Effective  Amendment  No.  73 on Form N-1A on  February  29,
               1996).

          (9)  Articles  Supplementary  of Twentieth  Century  Investors,  Inc.,
               dated  March 11,  1996  (filed  electronically  as an  Exhibit to
               Post-Effective Amendment No. 75 on Form N-1A on June 14, 1996).

          (10) Articles of Amendment of Twentieth Century Investors, Inc., dated
               December  2,  1996  (filed   electronically   as  an  Exhibit  to
               Post-Effective  Amendment  No.  76 on Form N-1A on  February  28,
               1997).

          (11) Articles  Supplementary of American  Century Mutual Funds,  Inc.,
               dated  December  2, 1996 (filed  electronically  as an Exhibit to
               Post-Effective  Amendment  No.  76 on Form N-1A on  February  28,
               1997).

          (12) Articles  Supplementary of American  Century Mutual Funds,  Inc.,
               dated  July 28,  1997  (filed  electronically  as an  Exhibit  to
               Post-Effective  Amendment  No.  78 on Form N-1A on  February  26,
               1998).

          (13) Articles  Supplementary of American  Century Mutual Funds,  Inc.,
               dated  December 18, 1997 (filed  electronically  as an Exhibit to
               Post-Effective  Amendment  No.  78 on Form N-1A on  February  26,
               1998).

     (b)  (1)  By-laws   of   Twentieth   Century    Investors,    Inc.   (filed
               electronically as an Exhibit to  Post-Effective  Amendment No. 73
               on Form N-1A on February 29, 1996).

          (2)  Amendment to Bylaws of American Century Mutual Funds, Inc. (filed
               electronically as an Exhibit to Post-Effective Amendment No. 9 on
               Form N-1A of American Century Capital Portfolios,  Inc., File No.
               33-64872, on February 17, 1998).

     (c)  Not applicable.

     (d)  Management  Agreement  between American Century Mutual Funds, Inc. and
          American  Century  Investment  Management,  Inc.  dated August 1, 1997
          (filed electronically as an Exhibit to Post-Effective Amendment No. 78
          on Form N-1A on February 26, 1998).

     (e)  (1)  Distribution  Agreement  between  American  Century Mutual Funds,
               Inc. and Funds  Distributor,  Inc.  dated January 15, 1998 (filed
               electronically as an Exhibit to Post-Effectivement  Amendment No.
               28 on Form N-1A of  American  Century  Target  Maturities  Trust,
               File No. 2-94608, on January 30, 1998).

          (2)  Amendment No. 1 to the  Distribution  Agreement  between American
               Century Mutual Funds, Inc. and Funds Distributor, Inc. dated June
               1, 1998  (filed  electronically  as an Exhibit to  Post-Effective
               Amendment  No.  11 to  the  Registration  Statement  of  American
               Century Capital Portfolios,  Inc., File No. 33-64872, on June 26,
               1998).

          (3)  Amendment No. 2 to the  Distribution  Agreement  between American
               Century  Mutual Funds,  Inc. and Funds  Distributor,  Inc.  dated
               December  1,  1998  (filed   electronically   as  an  Exhibit  to
               Post-Effective  Amendment No. 12 to the Registration Statement of
               American Century World Mutual Funds, Inc., File No. 33-39242,  on
               November 13, 1998).

          (4)  Amendment No. 3 to the  Distribution  Agreement  between American
               Century  Mutual Funds,  Inc. and Funds  Distributor,  Inc.  dated
               January  29,  1999  (filed   electronically   as  an  Exhibit  to
               Post-Effective  Amendment No. 13 to the Registration Statement of
               American Century Capital Portfolios,  Inc., File No. 33-64872, on
               November 25, 1998).

     (f)  Not Applicable.

     (g)  (1)  Global Custody Agreement between The Chase Manhattan Bank and the
               Twentieth Century and  Benham funds,  dated August 9, 1996 (filed
               electronically as an Exhibit to  Post-Effective  Amendment No. 31
               on Form N-1A of American Century  Government  Income Trust,  File
               No. 2-99222, on February 7, 1997).

          (2)  Master  Agreement  between  Commerce  Bank,  N.A.  and  Twentieth
               Century   Services,   Inc.   dated   January   22,   1997  (filed
               electronically as an Exhibit to  Post-Effective  Amendment No. 76
               on Form N-1A on February 28, 1997).

     (h)  Transfer Agency Agreement between Twentieth  Century  Investors,  Inc.
          and  Twentieth  Century  Services,  Inc.  dated  March 1, 1991  (filed
          electronically  as an Exhibit to  Post-Effective  Amendment  No. 76 on
          Form N-1A on February 28, 1997).

     (i)  Opinion and Consent of Counsel is included herein.

     (j)  (1)  Consent of Deloitte & Touche LLP to be filed by amendment.

          (2)  Consent of Baird, Kurtz & Dobson to be filed by amendment.

          (3)  Power of Attorney is included herein.

     (k)  Not applicable.

     (l)  Not applicable.

     (m)  (1)  Master  Distribution  and Shareholder  Services Plan of Twentieth
               Century Capital  Portfolios,  Inc.,  Twentieth Century Investors,
               Inc.,  Twentieth  Century Strategic Asset  Allocations,  Inc. and
               Twentieth  Century World  Investors,  Inc.  (Advisor Class) dated
               September  3,  1996  (filed   electronically  as  an  Exhibit  to
               Post-Effective  Amendment No. 9 on Form N-1A of American  Century
               Capital  Portfolios,  Inc.,  File No.  33-64872,  on February 17,
               1998).

          (2)  Amendment No. 1 to Master  Distribution and Shareholder  Services
               Plan of  American  Century  Capital  Portfolios,  Inc.,  American
               Century Mutual Funds,  Inc.,  American  Century  Strategic  Asset
               Allocations,  Inc.  and  American  Century  World  Mutual  Funds,
               Inc.(Advisor Class) dated June 13, 1997 (filed  electronically as
               an exhibit  to  Post-Effective  Amendment  No. 77 on Form N-1A on
               July 17, 1997).

          (3)  Amendment No. 2 to Master  Distribution and Shareholder  Services
               Plan of  American  Century  Capital  Portfolios,  Inc.,  American
               Century Mutual Funds,  Inc.,  American  Century  Strategic  Asset
               Allocations,  Inc. and American Century World Mutual Funds,  Inc.
               (Advisor Class) dated September 30, 1997 (filed electronically as
               an Exhibit  to  Post-Effective  Amendment  No. 78 on Form N-1A on
               February 26, 1998).

          (4)  Amendment No. 3 to Master  Distribution and Shareholder  Services
               Plan of  American  Century  Capital  Portfolios,  Inc.,  American
               Century Mutual Funds,  Inc.,  American  Century  Strategic  Asset
               Allocations,  Inc. and American Century World Mutual Funds,  Inc.
               (Advisor Class) dated June 30, 1998 (filed  electronically  as an
               Exhibit  to  Post-Effective  Amendment  No.  11 on  Form  N-1A of
               American Century Capital Portfolios,  Inc., File No. 33-64872, on
               June 26, 1998).

          (5)  Amendment No. 4 to Master  Distribution and Shareholder  Services
               Plan of  American  Century  Capital  Portfolios,  Inc.,  American
               Century Mutual Funds,  Inc.,  American  Century  Strategic  Asset
               Allocations,  Inc. and American Century World Mutual Funds,  Inc.
               (Advisor Class) dated November 13, 1998 (filed electronically  as
               an Exhibit  to  Post-Effective  Amendment  No. 12 on Form N-1A of
               American Century World Mutual Funds, Inc., File No. 33-39242,  on
               November 13, 1998).

          (6)  Shareholder   Services   Plan  of   Twentieth   Century   Capital
               Portfolios,  Inc.,  Twentieth Century Investors,  Inc., Twentieth
               Century Strategic Asset  Allocations,  Inc. and Twentieth Century
               World  Investors,  Inc.  (Service  Class) dated September 3, 1996
               (filed  electronically as an Exhibit to Post-Effective  Amendment
               No. 9 on Form N-1A of American Century Capital Portfolios,  Inc.,
               File No. 33-64872, on February 17, 1998).

     (n)  (1)  Financial Data Schedule for Growth Fund is included herein.

          (2)  Financial Data Schedule for Select Fund is included herein.

          (3)  Financial Data Schedule for Ultra Fund is included herein.

          (4)  Financial Data Schedule for Vista Fund is included herein.

          (5)  Financial Data Schedule for Giftrust is included herein.

          (6)  Financial Data Schedule for Benham Bond Fund is included herein.

          (7)  Financial Data Schedule for Heritage Fund is included herein.

          (8)  Financial Data Schedule for Balanced Fund is included herein.

          (9)  Financial  Data Schedule for  Limited-Term  Bond Fund is included
               herein.

          (10) Financial  Data  Schedule  for  Intermediate-Term  Bond  Fund  is
               included herein.

          (l1) Financial  Data Schedule for New  Opportunities  Fund is included
               herein.

          (12) Financial  Data Schedule For Benham  High-Yield  Fund is included
               herein.

     (o)  (1)  Multiple  Class Plan of  Twentieth  Century  Capital  Portfolios,
               Inc.,  Twentieth  Century  Investors,   Inc.,  Twentieth  Century
               Strategic  Asset  Allocations,  Inc. and Twentieth  Century World
               Investors,  Inc. dated September 3, 1996 (filed electronically as
               an Exhibit to Post-Effective Amendment 9 on Form N-1A of American
               Century Capital Portfolios,  Inc., File No. 33-64872, on February
               17, 1998).

          (2)  Amendment  No.  1 to  Multiple  Class  Plan of  American  Century
               Capital  Portfolios,  Inc.,  American Century Mutual Funds, Inc.,
               American Century Strategic Asset  Allocations,  Inc. and American
               Century  World  Mutual  Funds,  Inc.  dated June 13,  1997 (filed
               electronically as an Exhibit to  Post-Effective  Amendment No. 77
               on Form N-1A on July 17, 1997).

          (3)  Amendment  No.  2 to  Multiple  Class  Plan of  American  Century
               Capital  Portfolios,  Inc.,  American Century Mutual Funds, Inc.,
               American Century Strategic Asset  Allocations,  Inc. and American
               Century World Mutual Funds,  Inc. dated September 30, 1997 (filed
               electronically as an Exhibit to  Post-Effective  Amendment No. 78
               on Form N-1A on February 26, 1998).

          (4)  Amendment  No.  3 to  Multiple  Class  Plan of  American  Century
               Capital  Portfolios,  Inc.,  American Century Mutual Funds, Inc.,
               American Century Strategic Asset  Allocations,  Inc. and American
               Century  World  Mutual  Funds,  Inc.  dated June 30,  1998 (filed
               electronically as an Exhibit to  Post-Effective  Amendment No. 11
               on Form N-1A of American Century Capital  Portfolios,  Inc., File
               No. 33-64872, on June 26, 1998).

          (5)  Amendment  No.  4 to  Multiple  Class  Plan of  American  Century
               Capital  Portfolios,  Inc.,  American Century Mutual Funds, Inc.,
               American Century Strategic Asset  Allocations,  Inc. and American
               Century World Mutual Funds,  Inc.  dated November 13, 1998 (filed
               electronically as an Exhibit to  Post-Effective  Amendment No. 12
               on Form N-1A of American  Century World Mutual Funds,  Inc., File
               No. 33-39242, on November 13, 1998).

          (6)  Amendment  No.  5 to  Multiple  Class  Plan of  American  Century
               Capital  Portfolios,  Inc.,  American Century Mutual Funds, Inc.,
               American Century Strategic Asset  Allocations,  Inc. and American
               Century  World Mutual Funds,  Inc.  dated January 29, 1999 (filed
               electronically as an Exhibit to  Post-Effective  Amendment No. 13
               on Form N-1A of American Century Capital  Portfolios,  Inc., File
               No. 33-64872, on November 25, 1998).

ITEM 24. Persons  Controlled  by or Under Common  Control with  Registrant. 

     Not Applicable.

ITEM 25. Indemnification.

     The  Corporation  is a Maryland  corporation.  Section 2-418 of the General
     Corporation Law of Maryland allows a Maryland  corporation to indemnify its
     directors,  officers,  employees and agents to the extent  provided in such
     statute.

     Article   Eighth   of  the   Articles   of   Incorporation   requires   the
     indemnification  of the corporation's  directors and officers to the extent
     permitted  by the  General  Corporation  Law of  Maryland,  the  Investment
     Company Act and all other applicable laws.

     The registrant has purchased an insurance  policy insuring its officers and
     directors against certain liabilities which such officers and directors may
     incur while acting in such  capacities and providing  reimbursement  to the
     registrant  for sums which it may be  permitted  or  required to pay to its
     officers and directors by way of indemnification  against such liabilities,
     subject  in  either   case  to   clauses   respecting   deductibility   and
     participation.

ITEM 26. Business and Other Connections of Investment Advisor.

     American Century Investment  Management,  Inc., the investment  advisor, is
     engaged in the business of managing  investments for registered  investment
     companies, deferred compensation plans and other institutional investors.

ITEM 27. Principal Underwriters.

(a)  Funds Distributor,  Inc. (the "Distributor") acts as principal  underwriter
     for the following investment companies.

American Century California Tax-Free and Municipal Funds
American Century Capital Portfolios, Inc.
American Century Government Income Trust
American Century International Bond Funds
American Century Investment Trust
American Century Municipal Trust
American Century Mutual Funds, Inc.
American Century Premium Reserves, Inc.
American Century Quantitative Equity Funds
American Century Strategic Asset Allocations, Inc.
American Century Target Maturities Trust
American Century Variable Portfolios, Inc.
American Century World Mutual Funds, Inc.
BJB Investment Funds
The Brinson Funds
Dresdner RCM Capital Funds, Inc.
Dresdner RCM Equity Funds, Inc.
Founders Funds, Inc.
Harris Insight Funds Trust
HT Insight Funds, Inc. d/b/a Harris Insight Funds
J.P. Morgan Institutional Funds
J.P. Morgan Funds
JPM Series Trust
JPM Series Trust II
LaSalle Partners Funds, Inc.
Kobrick-Cendant Investment Trust
Merrimac Series
Monetta Fund, Inc.
Monetta Trust
The Montgomery Funds I
The Montgomery Funds II
The Munder Framlington Funds Trust
The Munder Funds Trust
The Munder Funds, Inc.
National Investors Cash Management Fund, Inc.
Orbitex Group of Funds
SG Cowen Funds, Inc.
SG Cowen Income + Growth Fund, Inc.
SG Cowen Standby Reserve Fund, Inc.
SG Cowen Standby Tax-Exempt Reserve Fund, Inc.
SG Cowen Series Funds, Inc.
St. Clair Funds, Inc.
The Skyline Funds
Waterhouse Investors Family of Funds, Inc.
WEBS Index Fund, Inc.

     The Distributor is registered  with the Securities and Exchange  Commission
as a  broker-dealer  and is a member of the National  Association  of Securities
Dealers.  The  Distributor  is located at 60 State Street,  Suite 1300,  Boston,
Massachusetts 02109. The Distributor is an indirect  wholly-owned  subsidiary of
Boston  Institutional  Group,  Inc., a holding company all of whose  outstanding
shares are owned by key employees.

(b) The following is a list of the executive officers, directors and partners of
the Distributor:

<TABLE>
<CAPTION>
Name and Principal Business Address*  Positions and Offices with          Positions and Offices with
                                      Underwriter                         Registrant

<S>                                  <C>                                 <C>
Marie E. Connolly                     Director, President and Chief       none
                                      Executive Officer

George A. Rio                         Executive Vice President            President, Principal Executive
                                                                          and Principal Financial Officer

Donald R. Roberson                    Executive Vice President            none

William S. Nichols                    Executive Vice President            none

Margaret W. Chambers                  Senior Vice President, General      None
                                      Counsel, Chief Compliance
                                      Officer, Secretary and Clerk
Michael S. Petrucelli                 Senior Vice President               None

Joseph F. Tower, III                  Director, Senior Vice President,    None
                                      Treasurer and Chief Financial
                                      Officer

Paula R. David                        Senior Vice President               None

Allen B. Closser                      Senior Vice President               None

Bernard A. Whalen                     Senior Vice President               None

William J. Nutt                       Chairman and Director               None
- --------------------
* All addresses are 60 State Street, Suite 1300, Boston, Massachusetts 02109
</TABLE>

(c)  Not applicable.

ITEM 28. Location of Accounts and Records.

     All  accounts,  books and other  documents  required  to be  maintained  by
     Section 31(a) of the 1940 Act, and the rules promulgated thereunder, are in
     the possession of American  Century Mutual Funds,  Inc.,  American  Century
     Services Corporation and American Century Investment Management,  Inc., all
     located at American Century Tower, 4500 Main Street, Kansas City, Missouri
     64111.

ITEM 29. Management Services

     Not Applicable.

ITEM 30. Undertakings.
    
     Not Applicable.
<PAGE>
                                   SIGNATURES

     Pursuant  to  the  requirements  of the  Securities  Act of  1933  and  the
Investment Company Act of 1940, the Registrant certifies that it has duly caused
this  Post-Effective  Amendment  No.  79 to be  signed  on  its  behalf  by  the
undersigned,  thereunto duly  authorized,  in the City of Kansas City,  State of
Missouri on the 30th day of November, 1998.

                                      American Century Mutual Funds, Inc.
                                      (Registrant)

                                      By: /s/Charles A. Etherington
                                          Charles A. Etherington, Vice President

     Pursuant  to  the   requirements  of  the  Securities  Act  of  1933,  this
Post-Effective  Amendment No. 79 has been signed below by the following  persons
in the capacities and on the dates indicated.

Signature                   Title                              Date

*George A. Rio              President, Principal Executive     November 30, 1998
George A. Rio               and Principal Financial Officer

*Maryanne Roepke            Vice President and Treasurer       November 30, 1998
Maryanne Roepke

*James E. Stowers, Jr.      Chairman of the Board and          November 30, 1998
James E. Stowers, Jr.       Director                                            
                            
*James E. Stowers III       Director                           November 30, 1998
James E. Stowers III        

*Thomas A. Brown            Director                           November 30, 1998
Thomas A. Brown

*Robert W. Doering, M.D.    Director                           November 30, 1998
Robert W. Doering, M.D.

*Andrea C. Hall, Ph.D.      Director                           November 30, 1998
Andrea C. Hall, Ph.D.

*Donald H. Pratt            Director                           November 30, 1998
Donald H. Pratt

*Lloyd T. Silver, Jr.       Director                           November 30, 1998
Lloyd T. Silver, Jr.

*M. Jeannine Strandjord     Director                           November 30, 1998
M. Jeannine Strandjord

*D. D. (Del) Hock           Director                           November 30, 1998
D. D. (Del) Hock

*By /s/Charles A. Etherington
    Charles A. Etherington
    Attorney-in-Fact

                                  EXHIBIT INDEX


EXHIBIT      DESCRIPTION OF DOCUMENT
NUMBER

EX-99.a1     Articles of Incorporation  of Twentieth  Century  Investors,  Inc.,
             dated July 2, 1990 (filed as a part of Post-Effective Amendment No.
             73 to the  Registration  Statement on Form N-1A of the  Registrant,
             File No.  2-14213,  filed on February  29, 1996,  and  incorporated
             herein by reference).

EX-99.a2     Articles of Amendment of Twentieth Century  Investors,  Inc., dated
             November 20, 1990 (filed as a part of Post-Effective  Amendment No.
             73 to the  Registration  Statement on Form N-1A of the  Registrant,
             File No.  2-14213,  filed on February  29, 1996,  and  incorporated
             herein by reference).

EX-99.a3     Articles of Merger of Twentieth Century Investors, Inc., a Maryland
             corporation  and  Twentieth  Century  Investors,  Inc.,  a Delaware
             corporation,   dated   February  22,  1991  (filed  as  a  part  of
             Post-Effective  Amendment No. 73 to the  Registration  Statement on
             Form N-1A of the Registrant,  File No.  2-14213,  filed on February
             29, 1996, and incorporated herein by reference).

EX-99.a4     Articles of Amendment of Twentieth Century  Investors,  Inc., dated
             August 11, 1993 (filed as a part of Post-Effective Amendment No. 73
             to the Registration Statement on Form N-1A of the Registrant,  File
             No. 2-14213, filed on February 29, 1996, and incorporated herein by
             reference).

EX-99.a5     Articles Supplementary of Twentieth Century Investors,  Inc., dated
             September 3, 1993 (filed as a part of Post-Effective  Amendment No.
             73 to the  Registration  Statement on Form N-1A of the  Registrant,
             File No.  2-14213,  filed on February  29, 1996,  and  incorporated
             herein by reference).

EX-99.a6     Articles Supplementary of Twentieth Century Investors,  Inc., dated
             April 28, 1995 (filed as a part of Post-Effective  Amendment No. 73
             to the Registration Statement on Form N-1A of the Registrant,  File
             No. 2-14213, filed on February 29, 1996, and incorporated herein by
             reference).

EX-99.a7     Articles  Supplementary  of  Twentieth  Century  Investors,   dated
             November 17, 1995 (filed as a part of Post-Effective  Amendment No.
             73 to the  Registration  Statement on Form N-1A of the  Registrant,
             File No.  2-14213,  filed on February  29, 1996,  and  incorporated
             herein by reference).

EX-99.a8     Articles Supplementary of Twentieth Century Investors,  Inc., dated
             January 30, 1996 (filed as a part of  Post-Effective  Amendment No.
             73 to the  Registration  Statement on Form N-1A of the  Registrant,
             File No.  2-14213,  filed on February  29, 1996,  and  incorporated
             herein by reference).

EX-99.a9     Articles Supplementary of Twentieth Century Investors,  Inc., dated
             March 11, 1996 (filed as a part of Post-Effective  Amendment No. 75
             to the Registration Statement on Form N-1A of the Registrant,  File
             No.  2-14213,  filed on June 14, 1996, and  incorporated  herein by
             reference).

EX-99.a10    Articles of Amendment of Twentieth  Century  Investors,  Inc. dated
             December 2, 1996 (filed as a part of  Post-Effective  Amendment No.
             76 to the  Registration  Statement on Form N-1A of the  Registrant,
             File No.  2-14213,  filed on February  28, 1997,  and  incorporated
             herein by reference).

EX-99.a11    Articles Supplementary of American Century Mutual Funds, Inc. dated
             December 2, 1996 (filed as a part of  Post-Effective  Amendment No.
             76 to the  Registration  Statement on Form N-1A of the  Registrant,
             File No.  2-14213,  filed on February  28, 1997,  and  incorporated
             herein by reference).

EX-99.a12    Articles Supplementary of American Century Mutual Funds, Inc. dated
             July 28, 1997 (filed as a part of  Post-Effective  Amendment No. 78
             to the Registration Statement on Form N-1A of the Registrant,  File
             No. 2-14213, filed on February 26, 1998, and incorporated herein by
             reference).

EX-99.a13    Articles Supplementary of American Century Mutual Funds, Ind. dated
             December 18, 1997 (filed as a part of Post-Effective  Amendment No.
             78 to the  Registration  Statement on Form N-1A of the  Registrant,
             File No.  2-14213,  (filed on February 26, 1998,  and  incorporated
             herein by reference).

EX-99.b1     Bylaws of Twentieth  Century  Investors,  Inc.  (filed as a part of
             Post-Effective  Amendment No. 73 to the  Registration  Statement on
             Form N-1A of the Registrant,  File No.  2-14213,  filed on February
             29, 1996, and incorporated herein by reference).

EX-99.b2     Amendment of Bylaws of American  Century Mutual Funds,  Inc. (filed
             as a part of  Post-Effective  Amendment  No. 9 to the  Registration
             Statement  on Form N-1A of  American  Century  Capital  Portfolios,
             Inc.,  File  No.   33-64872,   filed  on  February  17,  1998,  and
             incorporated herein by reference).

EX-99.d      Management  Agreement  between American Century Mutual Funds,  Inc.
             and American Century  Investment  Management,  Inc. dated August 1,
             1997 (filed  as a part of  Post-Effective  Amendment  No. 78 to the
             Registration  Statement  on Form N-1A of the  Registrant,  File No.
             2-14213,  filed on February 26, 1998,  and  incorporated  herein by
             reference).

EX-99.e1     Distribution  Agreement between American Century Mutual Funds, Inc.
             and Funds  Distributor,  dated January 15, 1998 (filed as a part of
             Post-Effective  Amendment No. 30 to the  Registration  Statement on
             Form N-1A of American  Century Target  Maturities  Trust,  File No.
             2-94608,  filed on January 30,  1998,  and  incorporated  herein by
             reference).

EX-99.e2     Amendment  No. 1 to the  Distribution  Agreement  between  American
             Century  Mutual Funds,  Inc. and Funds  Distributor,  dated June 1,
             1998  (filed as a part of  Post-Effective  Amendment  No. 11 to the
             Registration  Statement  on Form N-1A of American  Century  Capital
             Portfolios,  Inc., File No.  33-64872,  filed on June 26, 1998, and
             incorporated herein by reference).

EX-99.e3     Amendment  No. 2 to the  Distribution  Agreement  between  American
             Century Mutual Funds, Inc. and Funds Distributor, dated December 1,
             1998  (filed as a part of  Post-Effective  Amendment  No. 12 to the
             Registration  Statement  on Form  N-1A of  American  Century  World
             Mutual Funds, Inc., File No. 33-39242,  filed on November 13, 1998,
             and incorporated herein by reference).

EX-99.e4     Amendment  No. 3 to the  Distribution  Agreement  between  American
             Century Mutual Funds, Inc. and Funds Distributor, dated January 29,
             1999  (filed as a part of  Post-Effective  Amendment  No. 13 to the
             Registration  Statement  on Form N-1A of American  Century  Capital
             Portfolios,  Inc., File No.  33-64872,  filed on November 25, 1998,
             and incorporated herein by reference).

EX-99.g1     Global Custody  Agreement  between The Chase Manhattan Bank and the
             Twentieth Century and Benham funds,  dated August 9, 1996 (filed as
             a part  of  Post-Effective  Amendment  No.  31 to the  Registration
             Statement on Form N-1A of American Century Government Income Trust,
             File No.  2-99222,  filed on  February  7, 1997,  and  incorporated
             herein by reference).

EX-99.g2     Master Agreement  between Commerce Bank, N.A. and Twentieth Century
             Services,  Inc.  dated  January  22,  1997  (filed  as  a  part  of
             Post-Effective  Amendment No. 76 to the  Registration  Statement on
             Form N-1A of the Registrant,  File No.  2-14213,  filed on February
             28, 1997, and incorporated herein by reference).

EX-99.h      Transfer Agency Agreement dated as of March 1, 1991, by and between
             Twentieth Century  Investors,  Inc. and Twentieth Century Services,
             Inc.  (filed as a part of  Post-Effective  Amendment  No. 76 to the
             Registration  Statement  on Form N-1A of the  Registrant,  File No.
             2-14213,  filed on February 28, 1997,  and  incorporated  herein by
             reference).

EX-99.i      Opinion and Consent of Counsel.

EX-99.j1     Consent of Deloitte & Touche LLP to be filed by amendment.

EX-99.j2     Consent of Baird, Kurtz & Dobson to be filed by amendment.

EX-99.j3     Power of Attorney dated July 25, 1998.

EX-99.m1     Master  Distribution  and  Shareholder  Services  Plan of Twentieth
             Century Capital  Portfolios,  Inc.,  Twentieth  Century  Investors,
             Inc.,  Twentieth  Century  Strategic  Asset  Allocations,  Inc. and
             Twentieth  Century  World  Investors,  Inc.  (Advisor  Class) dated
             September 3, 1996 (filed as a part of Post-Effective  Amendment No.
             9 to the  Registration  Statement on Form N-1A of American  Century
             Capital Portfolios,  Inc., File No. 33-64872, filed on February 17,
             1998, and incorporated herein by reference).

EX-99.m2     Amendment No. 1 to Master  Distribution  and  Shareholder  Services
             Plan of American Century Capital Portfolios, Inc., American Century
             Mutual Funds,  Inc.,  American Century Strategic Asset Allocations,
             Inc. and American Century World Mutual Funds,  Inc. (Advisor Class)
             dated June 13,  1997 (filed as a part of  Post-Effective  Amendment
             No.  77  to  the  Registration   Statement  on  Form  N-1A  of  the
             Registrant,   File  No.  2-14213,  filed  on  July  17,  1997,  and
             incorporated herein by reference).

EX-99.m3     Amendment No. 2 to Master  Distribution  and  Shareholder  Services
             Plan of American Century Capital Portfolios, Inc., American Century
             Mutual Funds,  Inc.,  American Century Strategic Asset Allocations,
             Inc. and American Century World Mutual Funds,  Inc. (Advisor Class)
             dated  September  30,  1997  (filed  as a  part  of  Post-Effective
             Amendment No. 78 to the Registration  Statement on Form N-1A of the
             Registrant,  File No.  2-14213,  filed on February  26,  1998,  and
             incorporated herein by reference).

EX-99.m4     Amendment No. 3 to Master  Distribution  and  Shareholder  Services
             Plan of American Century Capital Portfolios, Inc., American Century
             Mutual Funds,  Inc.,  American Century Strategic Asset Allocations,
             Inc. and American Century World Mutual Funds,  Inc. (Advisor Class)
             dated June 30,  1998 (filed as a part of  Post-Effective  Amendment
             No.  11 to the  Registration  Statement  on Form  N-1A of  American
             Century Capital Portfolios,  Inc., File No. 33-64872, filed on June
             26, 1998, and incorporated herein by reference).

EX-99.m5     Amendment No. 4 to Master  Distribution  and  Shareholder  Services
             Plan of American Century Capital Portfolios, Inc., American Century
             Mutual Funds,  Inc.,  American Century Strategic Asset Allocations,
             Inc. and American Century World Mutual Funds,  Inc. (Advisor Class)
             dated  November  13,  1998  (filed  as  a  part  of  Post-Effective
             Amendment  No.  12 to the  Registration  Statement  on Form N-1A of
             American Century World Mutual Funds, Inc., File No. 33-39242, filed
             on November 13, 1998, and incorporated herein by reference).

EX-99.m6     Shareholder  Services Plan of Twentieth Century Capital Portfolios,
             Inc.,   Twentieth  Century  Investors,   Inc.,   Twentieth  Century
             Strategic  Asset  Allocations,  Inc. and  Twentieth  Century  World
             Investors, Inc. (Service Class) dated September 3, 1996 (filed as a
             part  of  Post-Effective   Amendment  No.  9  to  the  Registration
             Statement  on Form N-1A of  American  Century  Capital  Portfolios,
             Inc.,  File  No.   33-64872,   filed  on  February  17,  1998,  and
             incorporated herein by reference).

EX-99.o1     Multiple Class Plan of Twentieth Century Capital Portfolios,  Inc.,
             Twentieth  Century  Investors,  Inc.,  Twentieth  Century Strategic
             Asset Allocations, Inc. and Twentieth Century World Investors, Inc.
             dated  September  3,  1996  (filed  as  a  part  of  Post-Effective
             Amendment  No.  9 to the  Registration  Statement  on Form  N-1A of
             American Century Capital Portfolios, Inc., File No. 33-64872, filed
             on February 17, 1998, and incorporated herein by reference).

EX-99.o2     Amendment No. 1 to Multiple Class Plan of American  Century Capital
             Portfolios,  Inc.,  American Century Mutual Funds,  Inc.,  American
             Century  Strategic  Asset  Allocations,  Inc. and American  Century
             World Mutual  Funds,  Inc.  dated June 13, 1997 (filed as a part of
             Post-Effective  Amendment No. 77 to the  Registration  Statement on
             Form N-1A of the Registrant,  File No.  2-14213,  filed on July 17,
             1997, and incorporated herein by reference).

EX-99.o3     Amendment No. 2 to Multiple Class Plan of American  Century Capital
             Portfolios,  Inc.,  American Century Mutual Funds,  Inc.,  American
             Century  Strategic  Asset  Allocations,  Inc. and American  Century
             World Mutual Funds,  Inc. dated September 30, 1997 (filed as a part
             of Post-Effective Amendment No. 78 to the Registration Statement on
             Form N-1A of the Registrant,  File No.  2-14213,  filed on February
             26, 1998, and incorporated herein by reference).

EX-99.o4     Amendment No. 3 to Multiple Class Plan of American  Century Capital
             Portfolios,  Inc.,  American Century Mutual Funds,  Inc.,  American
             Century  Strategic  Asset  Allocations,  Inc. and American  Century
             World Mutual  Funds,  Inc.  dated June 30, 1998 (filed as a part of
             Post-Effective  Amendment No. 11 to the  Registration  Statement on
             Form N-1A of American  Century Capital  Portfolios,  Inc., File No.
             33-64872,  filed on June  26,  1998,  and  incorporated  herein  by
             reference).

EX-99.o5     Amendment No. 4 to Multiple Class Plan of American  Century Capital
             Portfolios,  Inc.,  American Century Mutual Funds,  Inc.,  American
             Century  Strategic  Asset  Allocations,  Inc. and American  Century
             World Mutual Funds,  Inc.  dated November 13, 1998 (filed as a part
             of Post-Effective Amendment No. 12 to the Registration Statement on
             Form N-1A of American  Century World Mutual Funds,  Inc.,  File No.
             33-39242,  filed on November 13, 1998, and  incorporated  herein by
             reference).

EX-99.o6     Amendment No. 5 to Multiple Class Plan of American  Century Capital
             Portfolios,  Inc.,  American Century Mutual Funds,  Inc.,  American
             Century  Strategic  Asset  Allocations,  Inc. and American  Century
             World Mutual Funds, Inc. dated January 29, 1999 (filed as a part of
             Post-Effective  Amendment No. 13 to the  Registration  Statement on
             Form N-1A of the Registrant,  File No. 33-64872,  filed on November
             25, 1998, and incorporated herein by reference).

EX-27.1.1    Financial Data Schedule for Growth Fund.

EX-27.1.2    Financial Data Schedule for Select Fund.

EX-27.1.3    Financial Data Schedule for Ultra Fund.

EX-27.1.4    Financial Data Schedule for Vista Fund.

EX-27.1.5    Financial Data Schedule for Giftrust.

EX-27.5.6    Financial Data Schedule for Benham Bond Fund.

EX-27.1.7    Financial Data Schedule for Heritage Fund.

EX-27.7.8    Financial Data Schedule for Balanced Fund.

EX-27.5.9    Financial Data Schedule for Limited-Term Bond Fund.

EX-27.5.10   Financial Data Schedule for Intermediate-Term Bond Fund.

EX-27.1.11   Financial Data Schedule for New Opportunities Fund.  

EX-27.5.12   Financial Data Schedule for Benham High-Yield Fund.

                             Charles A. Etherington
                                 Attorney at Law
                        4500 Main Street P.O. Box 418210
                        Kansas City, Missouri 64141-9210
                            Telephone (816) 340-4051
                            Telecopier (816) 340-4964
                           --------------------------

                                                               November 30, 1998


American Century Mutual Funds, Inc.
American Century Tower
4500 Main Street
Kansas City, Missouri  64111

Ladies and Gentlemen:

         As counsel to American  Century  Mutual  Funds,  Inc.,  I am  generally
familiar with its affairs. Based upon this familiarity, and upon the examination
of such documents as I have deemed relevant, it is my opinion that the shares of
the Corporation described in Post-Effective Amendment No. 79 to its Registration
Statement on Form N-1A, to be filed with the Securities and Exchange  Commission
on November  30, 1998,  will,  when issued,  be validly  issued,  fully paid and
nonassessable.

         For the  record,  it should be noted that I am an  officer of  American
Century  Services  Corporation,  an affiliated  corporation of American  Century
Investment  Management,  Inc., the investment adviser of American Century Mutual
Funds, Inc.

         I  hereby  consent  to  the  use  of  this  opinion  as an  exhibit  to
Post-Effective Amendment No. 79.

                           Very truly yours,

                           /s/Charles A. Etherington
                           Charles A. Etherington

                                POWER OF ATTORNEY

         KNOW ALL MEN BY THESE PRESENTS, that the undersigned, American Century
Mutual Funds, Inc., hereinafter called the "Corporation", and certain directors
and officers of the Corporation, do hereby constitute and appoint George A. Rio,
Patrick A. Looby, Charles A. Etherington, David H. Reinmiller, and Charles C.S.
Park, and each of them individually, their true and lawful attorneys and agents
to take any and all action and execute any and all instruments which said
attorneys and agents may deem necessary or advisable to enable the Corporation
to comply with the Securities Act of 1933 and/or the Investment Company Act of
1940, as amended, and any rules, regulations, orders, or other requirements of
the United States Securities and Exchange Commission thereunder, in connection
with the registration under the Securities Act of 1933 and/or the Investment
Company Act of 1940, as amended, including specifically, but without limitation
of the foregoing, power and authority to sign the name of the Corporation in its
behalf and to affix its corporate seal, and to sign the names of each of such
directors and officers in their capacities as indicated, to any amendment or
supplement to the Registration Statement filed with the Securities and Exchange
Commission under the Securities Act of 1933 and/or the Investment Company Act of
1940, as amended, and to any instruments or documents filed or to be filed as a
part of or in connection with such Registration Statement; and each of the
undersigned hereby ratifies and confirms all that said attorneys and agents
shall do or cause to be done by virtue hereof.

         IN WITNESS WHEREOF, the Corporation has caused this Power to be
executed by its duly authorized officers on this the 25th day of July, 1998.

                                         AMERICAN CENTURY MUTUAL FUNDS, INC.


                                         By:/s/ George A. Rio
                                                George A. Rio, President


                               SIGNATURE AND TITLE


/s/ George A. Rio                                   /s/ Robert W. Doering, M.D.
George A. Rio                                       Robert W. Doering, M.D.
President, Principal Executive and                  Director
Principal Financial Officer

/s/ Maryanne Roepke                                 /s/ Andrea C. Hall
Maryanne Roepke                                     Andrea C. Hall, Ph.D.
Vice President and Treasurer                        Director


/s/ James E. Stowers                                /s/ Donald H. Pratt
James E. Stowers, Jr.                               Donald H. Pratt
Director                                            Director


/s/ James E. Stowers III                            /s/ Lloyd T. Silver
James E. Stowers III                                Lloyd T. Silver
Director                                            Director


/s/ Thomas A. Brown                                 /s/ M. Jeannine Strandjord
Thomas A. Brown                                     M. Jeannine Strandjord
Director                                            Director


Attest:                                             /s/ D. D. Hock 
                                                    D.D. ("Del") Hock
By:/s/ Patrick A. Looby                             Director
       Patrick A. Looby, Secretary

<TABLE> <S> <C>

<ARTICLE> 6
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL  INFORMATION  EXTRACTED FROM THE ANNUAL
REPORT OF AMERICAN  CENTURY MUTUAL FUNDS,  INC. AND IS QUALIFIED IS ITS ENTIRETY
BY REFERENCE TO SUCH  REPORT.  INFORMATION  PRESENTED IS A TOTAL OF ALL CLASSES,
EXCEPT WHERE SUCH PRESENTATION IS NOT POSSIBLE(SUCH AS PER SHARE DATA). IN THOSE
CASES, ONLY THE INVESTOR CLASS IS PRESENTED.
</LEGEND>
<CIK> 0000100334
<NAME> AMERICAN CENTURY MUTUAL FUNDS, INC.
<SERIES>
   <NUMBER> 1
   <NAME> AMERICAN CENTURY-TWENTIETH CENTURY GROWTH FUND
<MULTIPLIER>                      1000
       
<S>                       <C>
<PERIOD-TYPE>                     6-MOS
<FISCAL-YEAR-END>                 OCT-31-1998
<PERIOD-END>                      APR-30-1998                        <F1>
<INVESTMENTS-AT-COST>                                     4,415,988
<INVESTMENTS-AT-VALUE>                                    5,991,038
<RECEIVABLES>                                               108,884
<ASSETS-OTHER>                                                6,408
<OTHER-ITEMS-ASSETS>                                              0
<TOTAL-ASSETS>                                            6,106,330
<PAYABLE-FOR-SECURITIES>                                    131,451
<SENIOR-LONG-TERM-DEBT>                                           0
<OTHER-ITEMS-LIABILITIES>                                    13,677
<TOTAL-LIABILITIES>                                         145,128
<SENIOR-EQUITY>                                               2,121
<PAID-IN-CAPITAL-COMMON>                                  3,504,539
<SHARES-COMMON-STOCK>                                       212,130
<SHARES-COMMON-PRIOR>                                       183,598
<ACCUMULATED-NII-CURRENT>                                     3,075
<OVERDISTRIBUTION-NII>                                            0
<ACCUMULATED-NET-GAINS>                                     873,337
<OVERDISTRIBUTION-GAINS>                                          0
<ACCUM-APPREC-OR-DEPREC>                                  1,578,130
<NET-ASSETS>                                              5,961,202
<DIVIDEND-INCOME>                                            24,881
<INTEREST-INCOME>                                             5,086
<OTHER-INCOME>                                                    0
<EXPENSES-NET>                                               26,890
<NET-INVESTMENT-INCOME>                                       3,077
<REALIZED-GAINS-CURRENT>                                    887,903
<APPREC-INCREASE-CURRENT>                                    58,757
<NET-CHANGE-FROM-OPS>                                       949,737
<EQUALIZATION>                                                    0
<DISTRIBUTIONS-OF-INCOME>                                         2
<DISTRIBUTIONS-OF-GAINS>                                    764,080
<DISTRIBUTIONS-OTHER>                                             0
<NUMBER-OF-SHARES-SOLD>                                      20,159
<NUMBER-OF-SHARES-REDEEMED>                                  23,295
<SHARES-REINVESTED>                                          31,668
<NET-CHANGE-IN-ASSETS>                                      846,054
<ACCUMULATED-NII-PRIOR>                                           0
<ACCUMULATED-GAINS-PRIOR>                                   749,514
<OVERDISTRIB-NII-PRIOR>                                           0
<OVERDIST-NET-GAINS-PRIOR>                                        0
<GROSS-ADVISORY-FEES>                                        26,854
<INTEREST-EXPENSE>                                                0
<GROSS-EXPENSE>                                              26,890
<AVERAGE-NET-ASSETS>                                      5,431,935
<PER-SHARE-NAV-BEGIN>                                         27.86  <F2>
<PER-SHARE-NII>                                                0.02  <F2>
<PER-SHARE-GAIN-APPREC>                                        4.39  <F2>
<PER-SHARE-DIVIDEND>                                           0.00   
<PER-SHARE-DISTRIBUTIONS>                                      4.17  <F2>
<RETURNS-OF-CAPITAL>                                           0.00
<PER-SHARE-NAV-END>                                           28.10  <F2>
<EXPENSE-RATIO>                                                1.00  <F2>
<AVG-DEBT-OUTSTANDING>                                            0
<AVG-DEBT-PER-SHARE>                                           0.00
<FN>
<F1>SCHEDULE REFLECTS THE TOTAL FOR ALL CLASSES, EXCEPT WHERE INDICATED.
<F2>INVESTOR CLASS INFORMATION ONLY.
</FN>
        

</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL  INFORMATION  EXTRACTED FROM THE ANNUAL
REPORT OF AMERICAN  CENTURY MUTUAL FUNDS,  INC. AND IS QUALIFIED IS ITS ENTIRETY
BY REFERENCE TO SUCH  REPORT.  INFORMATION  PRESENTED IS A TOTAL OF ALL CLASSES,
EXCEPT WHERE SUCH PRESENTATION IS NOT POSSIBLE(SUCH AS PER SHARE DATA). IN THOSE
CASES, ONLY THE INVESTOR CLASS IS PRESENTED.
</LEGEND>
<CIK> 0000100334
<NAME> AMERICAN CENTURY MUTUAL FUNDS, INC.
<SERIES>
   <NUMBER> 2
   <NAME> AMERICAN CENTURY-TWENTIETH CENTURY SELECT FUND
<MULTIPLIER>                                1000
       
<S>                       <C>
<PERIOD-TYPE>                               6-MOS
<FISCAL-YEAR-END>                           OCT-31-1998
<PERIOD-END>                                APR-30-1998                  <F1>
<INVESTMENTS-AT-COST>                                         4,178,332
<INVESTMENTS-AT-VALUE>                                        5,686,707
<RECEIVABLES>                                                    22,249
<ASSETS-OTHER>                                                    1,883
<OTHER-ITEMS-ASSETS>                                                  0
<TOTAL-ASSETS>                                                5,710,839
<PAYABLE-FOR-SECURITIES>                                         48,864
<SENIOR-LONG-TERM-DEBT>                                               0
<OTHER-ITEMS-LIABILITIES>                                        13,342
<TOTAL-LIABILITIES>                                              62,206
<SENIOR-EQUITY>                                                   1,152
<PAID-IN-CAPITAL-COMMON>                                      3,508,002
<SHARES-COMMON-STOCK>                                           115,272
<SHARES-COMMON-PRIOR>                                            99,252
<ACCUMULATED-NII-CURRENT>                                         6,107
<OVERDISTRIBUTION-NII>                                                0
<ACCUMULATED-NET-GAINS>                                         625,044
<OVERDISTRIBUTION-GAINS>                                              0
<ACCUM-APPREC-OR-DEPREC>                                      1,508,328
<NET-ASSETS>                                                  5,648,633
<DIVIDEND-INCOME>                                                27,943
<INTEREST-INCOME>                                                 4,555
<OTHER-INCOME>                                                        0
<EXPENSES-NET>                                                   25,774
<NET-INVESTMENT-INCOME>                                           6,724
<REALIZED-GAINS-CURRENT>                                        630,701
<APPREC-INCREASE-CURRENT>                                       379,015
<NET-CHANGE-FROM-OPS>                                         1,016,440
<EQUALIZATION>                                                        0
<DISTRIBUTIONS-OF-INCOME>                                        19,559
<DISTRIBUTIONS-OF-GAINS>                                        785,248
<DISTRIBUTIONS-OTHER>                                                 0
<NUMBER-OF-SHARES-SOLD>                                           9,541
<NUMBER-OF-SHARES-REDEEMED>                                      12,185
<SHARES-REINVESTED>                                              18,665
<NET-CHANGE-IN-ASSETS>                                          866,422
<ACCUMULATED-NII-PRIOR>                                          18,942
<ACCUMULATED-GAINS-PRIOR>                                       779,591
<OVERDISTRIB-NII-PRIOR>                                               0
<OVERDIST-NET-GAINS-PRIOR>                                            0
<GROSS-ADVISORY-FEES>                                            25,742
<INTEREST-EXPENSE>                                                    0
<GROSS-EXPENSE>                                                  25,774
<AVERAGE-NET-ASSETS>                                          5,208,810
<PER-SHARE-NAV-BEGIN>                                             48.18  <F2>
<PER-SHARE-NII>                                                    0.06  <F2>
<PER-SHARE-GAIN-APPREC>                                            8.89  <F2>
<PER-SHARE-DIVIDEND>                                               0.20  <F2>
<PER-SHARE-DISTRIBUTIONS>                                          7.93  <F2>
<RETURNS-OF-CAPITAL>                                               0.00
<PER-SHARE-NAV-END>                                               49.00  <F2>
<EXPENSE-RATIO>                                                    1.00  <F2>
<AVG-DEBT-OUTSTANDING>                                                0
<AVG-DEBT-PER-SHARE>                                               0.00
<FN>
<F1>SCHEDULE REFLECTS THE TOTAL FOR ALL CLASSES, EXCEPT WHERE INDICATED.
<F2>INVESTOR CLASS INFORMATION ONLY.
</FN>
        

</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL  INFORMATION  EXTRACTED FROM THE ANNUAL
REPORT OF AMERICAN  CENTURY MUTUAL FUNDS,  INC. AND IS QUALIFIED IN ITS ENTIRETY
BY REFERENCE TO SUCH  REPORT.  INFORMATION  PRESENTED IS A TOTAL OF ALL CLASSES,
EXCEPT WHERE SUCH PRESENTATION IS NOT POSSIBLE(SUCH AS PER SHARE DATA). IN THOSE
CASES, ONLY THE INVESTOR CLASS INFORMATION IS PRESENTED.
</LEGEND>
<CIK> 0000100334
<NAME> AMERICAN CENTURY MUTUAL FUNDS, INC.
<SERIES>
   <NUMBER> 3
   <NAME> TWENTIETH CENTURY ULTRA FUND
<MULTIPLIER>                                1000
        
<S>                                      <C>
<PERIOD-TYPE>                               6-MOS
<FISCAL-YEAR-END>                           OCT-31-1998
<PERIOD-END>                                APR-30-1998
<INVESTMENTS-AT-COST>                                          18,652,423   <F1>
<INVESTMENTS-AT-VALUE>                                         24,858,235
<RECEIVABLES>                                                     211,615
<ASSETS-OTHER>                                                  1,241,291
<OTHER-ITEMS-ASSETS>                                                    0
<TOTAL-ASSETS>                                                 26,311,141
<PAYABLE-FOR-SECURITIES>                                          194,246
<SENIOR-LONG-TERM-DEBT>                                            70,669
<OTHER-ITEMS-LIABILITIES>                                               0
<TOTAL-LIABILITIES>                                               264,915
<SENIOR-EQUITY>                                                     8,111
<PAID-IN-CAPITAL-COMMON>                                       16,511,777
<SHARES-COMMON-STOCK>                                             811,128
<SHARES-COMMON-PRIOR>                                             649,251
<ACCUMULATED-NII-CURRENT>                                           5,152
<OVERDISTRIBUTION-NII>                                                  0
<ACCUMULATED-NET-GAINS>                                         2,512,915
<OVERDISTRIBUTION-GAINS>                                                0
<ACCUM-APPREC-OR-DEPREC>                                        7,008,271
<NET-ASSETS>                                                   26,046,226
<DIVIDEND-INCOME>                                                 108,411
<INTEREST-INCOME>                                                   9,685
<OTHER-INCOME>                                                          0
<EXPENSES-NET>                                                          0
<NET-INVESTMENT-INCOME>                                             1,613
<REALIZED-GAINS-CURRENT>                                        2,545,336
<APPREC-INCREASE-CURRENT>                                       2,079,166
<NET-CHANGE-FROM-OPS>                                           4,626,115
<EQUALIZATION>                                                          0
<DISTRIBUTIONS-OF-INCOME>                                           8,663
<DISTRIBUTIONS-OF-GAINS>                                        4,600,571
<DISTRIBUTIONS-OTHER>                                                   0   
<NUMBER-OF-SHARES-SOLD>                                           113,738
<NUMBER-OF-SHARES-REDEEMED>                                       122,632   
<SHARES-REINVESTED>                                               170,770
<NET-CHANGE-IN-ASSETS>                                          4,320,310   
<ACCUMULATED-NII-PRIOR>                                            12,202
<ACCUMULATED-GAINS-PRIOR>                                       4,658,150
<OVERDISTRIB-NII-PRIOR>                                                 0   
<OVERDIST-NET-GAINS-PRIOR>                                              0
<GROSS-ADVISORY-FEES>                                             116,237
<INTEREST-EXPENSE>                                                      0
<GROSS-EXPENSE>                                                   116,483
<AVERAGE-NET-ASSETS>                                           23,528,982
<PER-SHARE-NAV-BEGIN>                                               33.46  <F2>
<PER-SHARE-NII>                                                      0.00   
<PER-SHARE-GAIN-APPREC>                                              5.73  <F2>
<PER-SHARE-DIVIDEND>                                                 0.01  <F2>
<PER-SHARE-DISTRIBUTIONS>                                            7.07  <F2>
<RETURNS-OF-CAPITAL>                                                 0.00   
<PER-SHARE-NAV-END>                                                 32.11  <F2>
<EXPENSE-RATIO>                                                      1.00  <F2>
<AVG-DEBT-OUTSTANDING>                                                  0   
<AVG-DEBT-PER-SHARE>                                                 0.00
<FN>                                                      
<F1>SCHEDULE REFLECTS THE TOTAL FOR ALL CLASSES, EXCEPT WHERE INDICATED.
<F2>INVESTOR CLASS INFORMATION ONLY.
</FN>
        

</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<LEGEND>
THIS  SCHEDULE  CONTAINS  SUMMARY  FINANCIAL   INFORMATION  EXTRACTED  FROM  THE
SEMI-ANNUAL  REPORT OF AMERICAN  CENTURY MUTUAL FUNDS,  INC. AND IS QUALIFIED IN
ITS ENTIRETY BY REFERENCE  TO SUCH REPORT.  INFORMATION  PRESENTED IS A TOTAL OF
ALL CLASSES,  EXCEPT WHERE SUCH  PRESENTATION IS NOT  POSSIBLE(SUCH AS PER SHARE
DATA). IN THOSE CASES, ONLY THE INVESTOR CLASS INFORMATION IS PRESENTED.
</LEGEND>
<CIK> 0000100334
<NAME> AMERICAN CENTURY MUTUAL FUNDS, INC.
<SERIES>
   <NUMBER>  4
   <NAME> TWENTIETH CENTURY VISTA FUND
<MULTIPLIER>                                        1000
       
<S>                                           <C>
<PERIOD-TYPE>                                       6-MOS
<FISCAL-YEAR-END>                                   OCT-31-1998
<PERIOD-END>                                        APR-30-1998
<INVESTMENTS-AT-COST>                                            1,233,226
<INVESTMENTS-AT-VALUE>                                           1,437,639
<RECEIVABLES>                                                       65,039
<ASSETS-OTHER>                                                     115,129
<OTHER-ITEMS-ASSETS>                                                     0
<TOTAL-ASSETS>                                                   1,617,807
<PAYABLE-FOR-SECURITIES>                                            93,466
<SENIOR-LONG-TERM-DEBT>                                                  0
<OTHER-ITEMS-LIABILITIES>                                            6,261
<TOTAL-LIABILITIES>                                                 99,727
<SENIOR-EQUITY>                                                      1,120
<PAID-IN-CAPITAL-COMMON>                                         1,093,246
<SHARES-COMMON-STOCK>                                              111,989
<SHARES-COMMON-PRIOR>                                              127,209
<ACCUMULATED-NII-CURRENT>                                          (3,567)
<OVERDISTRIBUTION-NII>                                                   0
<ACCUMULATED-NET-GAINS>                                            192,261
<OVERDISTRIBUTION-GAINS>                                                 0
<ACCUM-APPREC-OR-DEPREC>                                           235,020
<NET-ASSETS>                                                     1,518,080
<DIVIDEND-INCOME>                                                    1,625
<INTEREST-INCOME>                                                    2,907
<OTHER-INCOME>                                                           0
<EXPENSES-NET>                                                       8,099
<NET-INVESTMENT-INCOME>                                            (3,567)
<REALIZED-GAINS-CURRENT>                                           196,322
<APPREC-INCREASE-CURRENT>                                        (213,552)
<NET-CHANGE-FROM-OPS>                                             (20,797)
<EQUALIZATION>                                                           0
<DISTRIBUTIONS-OF-INCOME>                                                0
<DISTRIBUTIONS-OF-GAINS>                                            99,553   
<DISTRIBUTIONS-OTHER>                                                    0
<NUMBER-OF-SHARES-SOLD>                                             53,328
<NUMBER-OF-SHARES-REDEEMED>                                         76,568
<SHARES-REINVESTED>                                                  8,020   
<NET-CHANGE-IN-ASSETS>                                           (330,142)
<ACCUMULATED-NII-PRIOR>                                                  0   
<ACCUMULATED-GAINS-PRIOR>                                           95,492
<OVERDISTRIB-NII-PRIOR>                                                  0
<OVERDIST-NET-GAINS-PRIOR>                                               0   
<GROSS-ADVISORY-FEES>                                                8,074
<INTEREST-EXPENSE>                                                       0
<GROSS-EXPENSE>                                                      8,099
<AVERAGE-NET-ASSETS>                                             1,632,368
<PER-SHARE-NAV-BEGIN>                                                14.53  <F2>
<PER-SHARE-NII>                                                     (0.03)  <F2>
<PER-SHARE-GAIN-APPREC>                                             (0.14)  <F2>
<PER-SHARE-DIVIDEND>                                                  0.00
<PER-SHARE-DISTRIBUTIONS>                                             0.80  <F2>
<RETURNS-OF-CAPITAL>                                                  0.00
<PER-SHARE-NAV-END>                                                  13.56  <F2>
<EXPENSE-RATIO>                                                       1.00  <F2>
<AVG-DEBT-OUTSTANDING>                                                   0   
<AVG-DEBT-PER-SHARE>                                                  0.00
<FN>                                                                                                     
<F1>SCHEDULE RELFECTS THE TOTAL FOR ALL CLASSES, EXCEPT WHERE INDICATED.
<F2>INVESTOR CLASS INFORMATION ONLY.
</FN>
                                                                     

</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<LEGEND>
THIS  SCHEDULE  CONTAINS  SUMMARY  FINANCIAL   INFORMATION  EXTRACTED  FROM  THE
SEMI-ANNUAL  REPORT OF AMERICAN  CENTURY MUTUAL FUNDS,  INC. AND IS QUALIFIED IN
ITS ENTIRETY BY REFERENCE  TO SUCH REPORT.  INFORMATION  PRESENTED IS A TOTAL OF
ALL CLASSES,  EXCEPT WHERE SUCH  PRESENTATION IS NOT  POSSIBLE(SUCH AS PER SHARE
DATA). IN THOSE CASES, ONLY THE INVESTOR CLASS INFORMATION IS PRESENTED.
</LEGEND>
<CIK> 0000100334
<NAME> AMERICAN CENTURY MUTUAL FUNDS, INC.
<SERIES>
   <NUMBER> 5
   <NAME> TWENTIETH CENTURY GIFTRUST FUND
<MULTIPLIER>                           1000
       
<S>                          <C>
<PERIOD-TYPE>                          6-MOS
<FISCAL-YEAR-END>                      OCT-31-1998
<PERIOD-END>                           APR-30-1998                    <F1>
<INVESTMENTS-AT-COST>                                        872,155
<INVESTMENTS-AT-VALUE>                                     1,090,380
<RECEIVABLES>                                                 28,309
<ASSETS-OTHER>                                                   355
<OTHER-ITEMS-ASSETS>                                               0
<TOTAL-ASSETS>                                             1,119,044
<PAYABLE-FOR-SECURITIES>                                      30,557
<SENIOR-LONG-TERM-DEBT>                                            0
<OTHER-ITEMS-LIABILITIES>                                      1,034
<TOTAL-LIABILITIES>                                           31,591
<SENIOR-EQUITY>                                                  435
<PAID-IN-CAPITAL-COMMON>                                     869,373
<SHARES-COMMON-STOCK>                                         43,539
<SHARES-COMMON-PRIOR>                                         40,206
<ACCUMULATED-NII-CURRENT>                                    (2,572)
<OVERDISTRIBUTION-NII>                                             0
<ACCUMULATED-NET-GAINS>                                        1,992
<OVERDISTRIBUTION-GAINS>                                           0
<ACCUM-APPREC-OR-DEPREC>                                     218,225
<NET-ASSETS>                                               1,087,453
<DIVIDEND-INCOME>                                                518
<INTEREST-INCOME>                                              1,938
<OTHER-INCOME>                                                     0
<EXPENSES-NET>                                                 5,028
<NET-INVESTMENT-INCOME>                                      (2,572)
<REALIZED-GAINS-CURRENT>                                       3,696
<APPREC-INCREASE-CURRENT>                                     16,697
<NET-CHANGE-FROM-OPS>                                         17,821
<EQUALIZATION>                                                     0
<DISTRIBUTIONS-OF-INCOME>                                          0
<DISTRIBUTIONS-OF-GAINS>                                      30,705
<DISTRIBUTIONS-OTHER>                                              0
<NUMBER-OF-SHARES-SOLD>                                        2,385
<NUMBER-OF-SHARES-REDEEMED>                                      447
<SHARES-REINVESTED>                                            1,395
<NET-CHANGE-IN-ASSETS>                                        63,813
<ACCUMULATED-NII-PRIOR>                                            0
<ACCUMULATED-GAINS-PRIOR>                                     29,001   
<OVERDISTRIB-NII-PRIOR>                                            0
<OVERDIST-NET-GAINS-PRIOR>                                         0
<GROSS-ADVISORY-FEES>                                          5,023
<INTEREST-EXPENSE>                                                 0
<GROSS-EXPENSE>                                                5,028
<AVERAGE-NET-ASSETS>                                         830,211
<PER-SHARE-NAV-BEGIN>                                          25.46
<PER-SHARE-NII>                                               (0.12)
<PER-SHARE-GAIN-APPREC>                                         0.39
<PER-SHARE-DIVIDEND>                                            0.00
<PER-SHARE-DISTRIBUTIONS>                                       0.75
<RETURNS-OF-CAPITAL>                                            0.00
<PER-SHARE-NAV-END>                                            24.98
<EXPENSE-RATIO>                                                 1.00
<AVG-DEBT-OUTSTANDING>                                             0
<AVG-DEBT-PER-SHARE>                                            0.00
<FN>
<F1> SCHEDULE REFLECTS THE TOTAL FOR ALL CLASSES, EXCEPT WHERE INDICATED.
<F2> INVESTOR CLASS INFORMATION ONLY.
</FN>
        

</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<LEGEND>
THIS  SCHEDULE  CONTAINS  SUMMARY  FINANCIAL   INFORMATION  EXTRACTED  FROM  THE
SEMI-ANNUAL  REPORT OF AMERICAN  CENTURY MUTUAL FUNDS,  INC. AND IS QUALIFIED IN
ITS ENTIRETY BY REFERENCE  TO SUCH REPORT.  INFORMATION  PRESENTED IS A TOTAL OF
ALL CLASSES,  EXCEPT WHERE SUCH  PRESENTATION IS NOT  POSSIBLE(SUCH AS PER SHARE
DATA). IN THOSE CASES, ONLY THE INVESTOR CLASS INFORMATION IS PRESENTED.
</LEGEND>
<CIK> 0000100334
<NAME> AMERICAN CENTURY MUTUAL FUNDS, INC.
<SERIES>
   <NUMBER> 8
   <NAME> BENHAM BOND FUND
<MULTIPLIER>                   1000
       
<S>                       <C>
<PERIOD-TYPE>                  6-MOS
<FISCAL-YEAR-END>              OCT-31-1998
<PERIOD-END>                   APR-30-1998                              <F1>
<INVESTMENTS-AT-COST>                                          128,473   
<INVESTMENTS-AT-VALUE>                                         132,333
<RECEIVABLES>                                                    2,458
<ASSETS-OTHER>                                                       0
<OTHER-ITEMS-ASSETS>                                                50
<TOTAL-ASSETS>                                                 134,841
<PAYABLE-FOR-SECURITIES>                                             0
<SENIOR-LONG-TERM-DEBT>                                              0
<OTHER-ITEMS-LIABILITIES>                                          739
<TOTAL-LIABILITIES>                                                739
<SENIOR-EQUITY>                                                    138
<PAID-IN-CAPITAL-COMMON>                                       130,197
<SHARES-COMMON-STOCK>                                           13,842
<SHARES-COMMON-PRIOR>                                           13,058
<ACCUMULATED-NII-CURRENT>                                            0
<OVERDISTRIBUTION-NII>                                               0
<ACCUMULATED-NET-GAINS>                                           (93)
<OVERDISTRIBUTION-GAINS>                                             0
<ACCUM-APPREC-OR-DEPREC>                                         3,860
<NET-ASSETS>                                                   134,102
<DIVIDEND-INCOME>                                                    0
<INTEREST-INCOME>                                                4,471
<OTHER-INCOME>                                                       0
<EXPENSES-NET>                                                     529
<NET-INVESTMENT-INCOME>                                          3,942
<REALIZED-GAINS-CURRENT>                                          (68)
<APPREC-INCREASE-CURRENT>                                        (196)
<NET-CHANGE-FROM-OPS>                                            3,678
<EQUALIZATION>                                                       0
<DISTRIBUTIONS-OF-INCOME>                                        3,942
<DISTRIBUTIONS-OF-GAINS>                                           369   
<DISTRIBUTIONS-OTHER>                                                0
<NUMBER-OF-SHARES-SOLD>                                          3,728
<NUMBER-OF-SHARES-REDEEMED>                                      3,347
<SHARES-REINVESTED>                                                403
<NET-CHANGE-IN-ASSETS>                                           7,059
<ACCUMULATED-NII-PRIOR>                                              0
<ACCUMULATED-GAINS-PRIOR>                                            0   
<OVERDISTRIB-NII-PRIOR>                                              0
<OVERDIST-NET-GAINS-PRIOR>                                           0
<GROSS-ADVISORY-FEES>                                              524
<INTEREST-EXPENSE>                                                   0
<GROSS-EXPENSE>                                                    529
<AVERAGE-NET-ASSETS>                                           132,441
<PER-SHARE-NAV-BEGIN>                                             9.73  <F2>
<PER-SHARE-NII>                                                   0.29  <F2>
<PER-SHARE-GAIN-APPREC>                                         (0.01)  <F2>
<PER-SHARE-DIVIDEND>                                              0.29  <F2>
<PER-SHARE-DISTRIBUTIONS>                                         0.03  <F2>
<RETURNS-OF-CAPITAL>                                              0.00
<PER-SHARE-NAV-END>                                               9.69  <F2>
<EXPENSE-RATIO>                                                   0.80  <F2>
<AVG-DEBT-OUTSTANDING>                                               0
<AVG-DEBT-PER-SHARE>                                              0.00
<FN>
<F1> SCHEDULE REFLECTS THE TOTAL FOR ALL CLASSES, EXCEPT WHERE INDICATED.
<F2> INVESTOR CLASS INFORMATION ONLY.
</FN>
        

</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL  INFORMATION  EXTRACTED FROM THE ANNUAL
REPORT OF AMERICAN  CENTURY MUTUAL FUNDS,  INC. AND IS QUALIFIED IS ITS ENTIRETY
BY REFERENCE TO SUCH  REPORT.  INFORMATION  PRESENTED IS A TOTAL OF ALL CLASSES,
EXCEPT WHERE SUCH PRESENTATION IS NOT POSSIBLE(SUCH AS PER SHARE DATA). IN THOSE
CASES, ONLY THE INVESTOR CLASS IS PRESENTED.
</LEGEND>
<CIK> 0000100334
<NAME> AMERICAN CENTURY MUTUAL FUNDS, INC.
<SERIES>
   <NUMBER> 11
   <NAME> AMERICAN CENTURY-TWENTIETH CENTURY HERITAGE FUND
<MULTIPLIER>                  1000
       
<S>                       <C>
<PERIOD-TYPE>                 6-MOS
<FISCAL-YEAR-END>             OCT-31-1998
<PERIOD-END>                  APR-30-1998                           <F1>
<INVESTMENTS-AT-COST>                                    1,181,496
<INVESTMENTS-AT-VALUE>                                   1,450,907
<RECEIVABLES>                                               53,738
<ASSETS-OTHER>                                               6,510
<OTHER-ITEMS-ASSETS>                                             0
<TOTAL-ASSETS>                                           1,511,155
<PAYABLE-FOR-SECURITIES>                                    77,697
<SENIOR-LONG-TERM-DEBT>                                          0
<OTHER-ITEMS-LIABILITIES>                                    3,795
<TOTAL-LIABILITIES>                                         81,492
<SENIOR-EQUITY>                                              1,100
<PAID-IN-CAPITAL-COMMON>                                 1,038,582
<SHARES-COMMON-STOCK>                                      110,043
<SHARES-COMMON-PRIOR>                                       88,918
<ACCUMULATED-NII-CURRENT>                                    1,055
<OVERDISTRIBUTION-NII>                                           0
<ACCUMULATED-NET-GAINS>                                    118,557
<OVERDISTRIBUTION-GAINS>                                         0
<ACCUM-APPREC-OR-DEPREC>                                   270,369
<NET-ASSETS>                                             1,429,663
<DIVIDEND-INCOME>                                            5,439
<INTEREST-INCOME>                                            2,396
<OTHER-INCOME>                                                   0
<EXPENSES-NET>                                               6,585
<NET-INVESTMENT-INCOME>                                      1,250
<REALIZED-GAINS-CURRENT>                                   119,317
<APPREC-INCREASE-CURRENT>                                    1,332
<NET-CHANGE-FROM-OPS>                                      121,899
<EQUALIZATION>                                                   0
<DISTRIBUTIONS-OF-INCOME>                                    6,634
<DISTRIBUTIONS-OF-GAINS>                                   241,179
<DISTRIBUTIONS-OTHER>                                            0
<NUMBER-OF-SHARES-SOLD>                                     14,298
<NUMBER-OF-SHARES-REDEEMED>                                 32,180
<SHARES-REINVESTED>                                          5,797
<NET-CHANGE-IN-ASSETS>                                     108,148
<ACCUMULATED-NII-PRIOR>                                      6,439
<ACCUMULATED-GAINS-PRIOR>                                  240,419
<OVERDISTRIB-NII-PRIOR>                                          0
<OVERDIST-NET-GAINS-PRIOR>                                       0
<GROSS-ADVISORY-FEES>                                        6,576
<INTEREST-EXPENSE>                                               0
<GROSS-EXPENSE>                                              6,585
<AVERAGE-NET-ASSETS>                                     1,329,392
<PER-SHARE-NAV-BEGIN>                                        14.86  <F2>
<PER-SHARE-NII>                                               0.01  <F2>
<PER-SHARE-GAIN-APPREC>                                       0.89  <F2>
<PER-SHARE-DIVIDEND>                                          0.07  <F2>
<PER-SHARE-DISTRIBUTIONS>                                     2.70  <F2>
<RETURNS-OF-CAPITAL>                                          0.00
<PER-SHARE-NAV-END>                                          12.99  <F2>
<EXPENSE-RATIO>                                               1.00  <F2>
<AVG-DEBT-OUTSTANDING>                                           0
<AVG-DEBT-PER-SHARE>                                          0.00
<FN>
<F1>SCHEDULE REFLECTS THE TOTAL FOR ALL CLASSES, EXCEPT WHERE INDICATED.
<F2>INVESTOR CLASS INFORMATION ONLY.
</FN>
        

</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL  INFORMATION  EXTRACTED FROM THE ANNUAL
REPORT OF AMERICAN  CENTURY MUTUAL FUNDS,  INC. AND IS QUALIFIED IN ITS ENTIRETY
BY REFERENCE TO SUCH  REPORT.  INFORMATION  PRESENTED IS A TOTAL OF ALL CLASSES,
EXCEPT WHERE SUCH PRESENTATION IS NOT POSSIBLE(SUCH AS PER SHARE DATA). IN THOSE
CASES, ONLY THE INVESTOR CLASS IS PRESENTED.
</LEGEND>
<CIK> 0000100334
<NAME> AMERICAN CENTURY MUTUAL FUNDS, INC.
<SERIES>
   <NUMBER> 12
   <NAME> AMERICAN CENTURY BALANCED FUND
<MULTIPLIER>                          1000
       
<S>                            <C>
<PERIOD-TYPE>                         6-MOS
<FISCAL-YEAR-END>                     OCT-31-1998
<PERIOD-END>                          APR-30-1998                      <F1>
<INVESTMENTS-AT-COST>                                         822,807
<INVESTMENTS-AT-VALUE>                                        979,129
<RECEIVABLES>                                                  19,287
<ASSETS-OTHER>                                                  1,600
<OTHER-ITEMS-ASSETS>                                                0
<TOTAL-ASSETS>                                              1,000,016
<PAYABLE-FOR-SECURITIES>                                       23,283
<SENIOR-LONG-TERM-DEBT>                                             0
<OTHER-ITEMS-LIABILITIES>                                       2,492
<TOTAL-LIABILITIES>                                            25,775
<SENIOR-EQUITY>                                                49,913
<PAID-IN-CAPITAL-COMMON>                                      679,321
<SHARES-COMMON-STOCK>                                          49,913
<SHARES-COMMON-PRIOR>                                          47,654
<ACCUMULATED-NII-CURRENT>                                       2,294
<OVERDISTRIBUTION-NII>                                              0
<ACCUMULATED-NET-GAINS>                                        86,391
<OVERDISTRIBUTION-GAINS>                                            0
<ACCUM-APPREC-OR-DEPREC>                                      156,322
<NET-ASSETS>                                                  974,241
<DIVIDEND-INCOME>                                               2,240
<INTEREST-INCOME>                                              12,969
<OTHER-INCOME>                                                      0
<EXPENSES-NET>                                                  4,724
<NET-INVESTMENT-INCOME>                                        10,485
<REALIZED-GAINS-CURRENT>                                       87,335
<APPREC-INCREASE-CURRENT>                                     (6,479)
<NET-CHANGE-FROM-OPS>                                          91,341
<EQUALIZATION>                                                      0
<DISTRIBUTIONS-OF-INCOME>                                      10,753
<DISTRIBUTIONS-OF-GAINS>                                       76,004
<DISTRIBUTIONS-OTHER>                                               0
<NUMBER-OF-SHARES-SOLD>                                         4,611
<NUMBER-OF-SHARES-REDEEMED>                                     7,094
<SHARES-REINVESTED>                                             4,742
<NET-CHANGE-IN-ASSETS>                                         42,380
<ACCUMULATED-NII-PRIOR>                                         2,562
<ACCUMULATED-GAINS-PRIOR>                                           0
<OVERDISTRIB-NII-PRIOR>                                        75,060
<OVERDIST-NET-GAINS-PRIOR>                                          0
<GROSS-ADVISORY-FEES>                                           4,703
<INTEREST-EXPENSE>                                                  0
<GROSS-EXPENSE>                                                 4,724
<AVERAGE-NET-ASSETS>                                          951,287
<PER-SHARE-NAV-BEGIN>                                           19.55  <F2>
<PER-SHARE-NII>                                                  0.21  <F2>
<PER-SHARE-GAIN-APPREC>                                          1.58  <F2>
<PER-SHARE-DIVIDEND>                                             0.22  <F2>
<PER-SHARE-DISTRIBUTIONS>                                        1.60  <F2>
<RETURNS-OF-CAPITAL>                                             0.00
<PER-SHARE-NAV-END>                                             19.52  <F2>
<EXPENSE-RATIO>                                                  1.00  <F2>
<AVG-DEBT-OUTSTANDING>                                              0
<AVG-DEBT-PER-SHARE>                                             0.00
<FN>
<F1>SCHEDULE REFLECTS THE TOTAL FOR ALL CLASSES, EXCEPT WHERE INDICATED.
<F2>INVESTOR CLASS INFORMATION ONLY.
</FN>
        

</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<LEGEND>
THIS  SCHEDULE  CONTAINS  SUMMARY  FINANCIAL   INFORMATION  EXTRACTED  FROM  THE
SEMI-ANNUAL  REPORT OF AMERICAN  CENTURY MUTUAL FUNDS,  INC. AND IS QUALIFIED IN
ITS ENTIRETY BY REFERENCE  TO SUCH REPORT.  INFORMATION  PRESENTED IS A TOTAL OF
ALL CLASSES,  EXCEPT WHERE SUCH  PRESENTATION IS NOT  POSSIBLE(SUCH AS PER SHARE
DATA). IN THOSE CASES, ONLY THE INVESTOR CLASS INFORMATION IS PRESENTED.
</LEGEND>
<CIK> 0000100334
<NAME> AMERICAN CENTURY MUTUAL FUNDS, INC.
<SERIES>
   <NUMBER> 14
   <NAME> BENHAM LIMITED-TERM BOND
<MULTIPLIER>                   1000
       
<S>                       <C>
<PERIOD-TYPE>                  6-MOS
<FISCAL-YEAR-END>              OCT-31-1998
<PERIOD-END>                   APR-30-1998                        <F1>
<INVESTMENTS-AT-COST>                                     18,644   
<INVESTMENTS-AT-VALUE>                                    18,728
<RECEIVABLES>                                                  0
<ASSETS-OTHER>                                                 0
<OTHER-ITEMS-ASSETS>                                         230
<TOTAL-ASSETS>                                            18,958
<PAYABLE-FOR-SECURITIES>                                     887
<SENIOR-LONG-TERM-DEBT>                                        0
<OTHER-ITEMS-LIABILITIES>                                    567
<TOTAL-LIABILITIES>                                        1,454
<SENIOR-EQUITY>                                               18
<PAID-IN-CAPITAL-COMMON>                                  17,327
<SHARES-COMMON-STOCK>                                      1,759
<SHARES-COMMON-PRIOR>                                      1,530
<ACCUMULATED-NII-CURRENT>                                      0
<OVERDISTRIBUTION-NII>                                         0
<ACCUMULATED-NET-GAINS>                                       75
<OVERDISTRIBUTION-GAINS>                                       0
<ACCUM-APPREC-OR-DEPREC>                                      84
<NET-ASSETS>                                              17,504
<DIVIDEND-INCOME>                                              0
<INTEREST-INCOME>                                            602
<OTHER-INCOME>                                                 0
<EXPENSES-NET>                                                67
<NET-INVESTMENT-INCOME>                                      535
<REALIZED-GAINS-CURRENT>                                      76
<APPREC-INCREASE-CURRENT>                                   (44)
<NET-CHANGE-FROM-OPS>                                        567
<EQUALIZATION>                                                 0
<DISTRIBUTIONS-OF-INCOME>                                    535   
<DISTRIBUTIONS-OF-GAINS>                                      29   
<DISTRIBUTIONS-OTHER>                                          0
<NUMBER-OF-SHARES-SOLD>                                    1,410
<NUMBER-OF-SHARES-REDEEMED>                                1,233
<SHARES-REINVESTED>                                           52
<NET-CHANGE-IN-ASSETS>                                     2,235
<ACCUMULATED-NII-PRIOR>                                        0
<ACCUMULATED-GAINS-PRIOR>                                      0   
<OVERDISTRIB-NII-PRIOR>                                        0
<OVERDIST-NET-GAINS-PRIOR>                                     0
<GROSS-ADVISORY-FEES>                                         67
<INTEREST-EXPENSE>                                             0
<GROSS-EXPENSE>                                               67
<AVERAGE-NET-ASSETS>                                      19,307
<PER-SHARE-NAV-BEGIN>                                       9.98  <F2>
<PER-SHARE-NII>                                             0.28  <F2>
<PER-SHARE-GAIN-APPREC>                                   (0.02)  <F2>
<PER-SHARE-DIVIDEND>                                        0.28  <F2>
<PER-SHARE-DISTRIBUTIONS>                                   0.01  <F2>
<RETURNS-OF-CAPITAL>                                        0.00
<PER-SHARE-NAV-END>                                         9.95  <F2>
<EXPENSE-RATIO>                                             0.70  <F2>
<AVG-DEBT-OUTSTANDING>                                         0
<AVG-DEBT-PER-SHARE>                                        0.00
<FN>
<F1> SCHEDULE REFLECTS THE TOTAL FOR ALL CLASSES, EXCEPT WHERE INDICATED.
<F2> INVESTOR CLASS INFORMATION ONLY.
</FN>
        

</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<LEGEND>
THIS  SCHEDULE  CONTAINS  SUMMARY  FINANCIAL   INFORMATION  EXTRACTED  FROM  THE
SEMI-ANNUAL  REPORT OF AMERICAN  CENTURY MUTUAL FUNDS,  INC. AND IS QUALIFIED IN
ITS ENTIRETY BY REFERENCE  TO SUCH REPORT.  INFORMATION  PRESENTED IS A TOTAL OF
ALL CLASSES,  EXCEPT WHERE SUCH  PRESENTATION IS NOT  POSSIBLE(SUCH AS PER SHARE
DATA). IN THOSE CASES, ONLY THE INVESTOR CLASS INFORMATION IS PRESENTED.
</LEGEND>
<CIK> 0000100334
<NAME> AMERICAN CENTURY MUTUAL FUNDS, INC.
<SERIES>
   <NUMBER> 15
   <NAME> BENHAM INTERMEDIATE-TERM BOND
<MULTIPLIER>                    1000
       
<S>                       <C>
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>               OCT-31-1998
<PERIOD-END>                    APR-30-1998                       <F1>
<INVESTMENTS-AT-COST>                                     24,763   
<INVESTMENTS-AT-VALUE>                                    25,001
<RECEIVABLES>                                                336
<ASSETS-OTHER>                                                 0
<OTHER-ITEMS-ASSETS>                                           2
<TOTAL-ASSETS>                                            25,339
<PAYABLE-FOR-SECURITIES>                                     501
<SENIOR-LONG-TERM-DEBT>                                        0
<OTHER-ITEMS-LIABILITIES>                                  1,512
<TOTAL-LIABILITIES>                                        2,013
<SENIOR-EQUITY>                                               23
<PAID-IN-CAPITAL-COMMON>                                  22,939
<SHARES-COMMON-STOCK>                                      2,319
<SHARES-COMMON-PRIOR>                                      1,999
<ACCUMULATED-NII-CURRENT>                                      0
<OVERDISTRIBUTION-NII>                                         0
<ACCUMULATED-NET-GAINS>                                      126
<OVERDISTRIBUTION-GAINS>                                       0
<ACCUM-APPREC-OR-DEPREC>                                     238
<NET-ASSETS>                                              23,326
<DIVIDEND-INCOME>                                              0
<INTEREST-INCOME>                                            719
<OTHER-INCOME>                                                 0
<EXPENSES-NET>                                                84
<NET-INVESTMENT-INCOME>                                      635
<REALIZED-GAINS-CURRENT>                                     112
<APPREC-INCREASE-CURRENT>                                  (154)
<NET-CHANGE-FROM-OPS>                                        593
<EQUALIZATION>                                                 0
<DISTRIBUTIONS-OF-INCOME>                                    635
<DISTRIBUTIONS-OF-GAINS>                                       0   
<DISTRIBUTIONS-OTHER>                                          0
<NUMBER-OF-SHARES-SOLD>                                      798
<NUMBER-OF-SHARES-REDEEMED>                                  533
<SHARES-REINVESTED>                                           55
<NET-CHANGE-IN-ASSETS>                                     3,183
<ACCUMULATED-NII-PRIOR>                                        0
<ACCUMULATED-GAINS-PRIOR>                                     14   
<OVERDISTRIB-NII-PRIOR>                                        0
<OVERDIST-NET-GAINS-PRIOR>                                     0
<GROSS-ADVISORY-FEES>                                         78
<INTEREST-EXPENSE>                                             0
<GROSS-EXPENSE>                                               84
<AVERAGE-NET-ASSETS>                                      21,717
<PER-SHARE-NAV-BEGIN>                                      10.07  <F2>
<PER-SHARE-NII>                                             0.30  <F2>
<PER-SHARE-GAIN-APPREC>                                   (0.01)  <F2>
<PER-SHARE-DIVIDEND>                                        0.30  <F2>
<PER-SHARE-DISTRIBUTIONS>                                   0.00   
<RETURNS-OF-CAPITAL>                                        0.00   
<PER-SHARE-NAV-END>                                        10.06  <F2>
<EXPENSE-RATIO>                                             0.75  <F2>
<AVG-DEBT-OUTSTANDING>                                         0   
<AVG-DEBT-PER-SHARE>                                        0.00   
<FN>                                                               
<F1> SCHEDULE REFLECTS THE TOTAL FOR ALL CLASSES, EXCEPT WHERE INDICATED.
<F2> INVESTOR CLASS INFORMATION ONLY.
</FN>
        

</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL  INFORMATION  EXTRACTED FROM THE ANNUAL
REPORT OF AMERICAN  CENTURY MUTUAL FUNDS,  INC. AND IS QUALIFIED IS ITS ENTIRETY
BY REFERENCE TO SUCH  REPORT.  INFORMATION  PRESENTED IS A TOTAL OF ALL CLASSES,
EXCEPT WHERE SUCH PRESENTATION IS NOT POSSIBLE(SUCH AS PER SHARE DATA). IN THOSE
CASES, ONLY THE INVESTOR CLASS IS PRESENTED.
</LEGEND>
<CIK> 0000100334
<NAME> AMERICAN CENTURY MUTUAL FUNDS, INC.
<SERIES>
   <NUMBER> 17
   <NAME> TWENTIETH CENTURY NEW OPPORTUNITIES
<MULTIPLIER>                        1000
        
<S>                          <C>
<PERIOD-TYPE>                       6-MOS
<FISCAL-YEAR-END>                   OCT-31-1998
<PERIOD-END>                        APR-30-1998
<INVESTMENTS-AT-COST>                                          222,757
<INVESTMENTS-AT-VALUE>                                         276,447
<RECEIVABLES>                                                    5,225
<ASSETS-OTHER>                                                       0
<OTHER-ITEMS-ASSETS>                                                 0
<TOTAL-ASSETS>                                                 281,672
<PAYABLE-FOR-SECURITIES>                                         8,128
<SENIOR-LONG-TERM-DEBT>                                              0
<OTHER-ITEMS-LIABILITIES>                                          599
<TOTAL-LIABILITIES>                                              8,727
<SENIOR-EQUITY>                                                    453
<PAID-IN-CAPITAL-COMMON>                                       217,231
<SHARES-COMMON-STOCK>                                           45,336
<SHARES-COMMON-PRIOR>                                           43,529
<ACCUMULATED-NII-CURRENT>                                      (1,455)
<OVERDISTRIBUTION-NII>                                               0
<ACCUMULATED-NET-GAINS>                                          3,026
<OVERDISTRIBUTION-GAINS>                                             0
<ACCUM-APPREC-OR-DEPREC>                                        53,690
<NET-ASSETS>                                                   272,945
<DIVIDEND-INCOME>                                                   79
<INTEREST-INCOME>                                                  255
<OTHER-INCOME>                                                       0
<EXPENSES-NET>                                                   1,789
<NET-INVESTMENT-INCOME>                                        (1,455)
<REALIZED-GAINS-CURRENT>                                         6,777
<APPREC-INCREASE-CURRENT>                                       26,995
<NET-CHANGE-FROM-OPS>                                           32,317
<EQUALIZATION>                                                       0
<DISTRIBUTIONS-OF-INCOME>                                            0
<DISTRIBUTIONS-OF-GAINS>                                             0
<DISTRIBUTIONS-OTHER>                                                0
<NUMBER-OF-SHARES-SOLD>                                          5,227
<NUMBER-OF-SHARES-REDEEMED>                                      3,420
<SHARES-REINVESTED>                                                  0
<NET-CHANGE-IN-ASSETS>                                         272,945
<ACCUMULATED-NII-PRIOR>                                        208,322
<ACCUMULATED-GAINS-PRIOR>                                      (3,751)
<OVERDISTRIB-NII-PRIOR>                                              0   
<OVERDIST-NET-GAINS-PRIOR>                                           0
<GROSS-ADVISORY-FEES>                                            1,788
<INTEREST-EXPENSE>                                                   0
<GROSS-EXPENSE>                                                  1,789
<AVERAGE-NET-ASSETS>                                           240,862
<PER-SHARE-NAV-BEGIN>                                             5.31
<PER-SHARE-NII>                                                 (0.03)
<PER-SHARE-GAIN-APPREC>                                           0.74
<PER-SHARE-DIVIDEND>                                              0.00
<PER-SHARE-DISTRIBUTIONS>                                         0.00
<RETURNS-OF-CAPITAL>                                              0.00
<PER-SHARE-NAV-END>                                               6.02
<EXPENSE-RATIO>                                                   1.50
<AVG-DEBT-OUTSTANDING>                                               0
<AVG-DEBT-PER-SHARE>                                              0.00
<FN>                                 
<F1>SCHEDULE REFLECTS THE TOTAL FOR ALL CLASSES, EXCEPT WHERE INDICATED.
<F2>INVESTOR CLASS INFORMATION ONLY.
</FN>
        

</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<LEGEND>
THIS  SCHEDULE  CONTAINS  SUMMARY  FINANCIAL   INFORMATION  EXTRACTED  FROM  THE
SEMI-ANNUAL  REPORT OF AMERICAN  CENTURY MUTUAL FUNDS,  INC. AND IS QUALIFIED IN
ITS ENTIRETY BY REFERENCE  TO SUCH REPORT.  INFORMATION  PRESENTED IS A TOTAL OF
ALL CLASSES,  EXCEPT WHERE SUCH  PRESENTATION IS NOT  POSSIBLE(SUCH AS PER SHARE
DATA). IN THOSE CASES, ONLY THE INVESTOR CLASS INFORMATION IS PRESENTED.
</LEGEND>
<CIK> 0000100334
<NAME> AMERICAN CENTURY MUTUAL FUNDS, INC.
<SERIES>
   <NUMBER> 18
   <NAME> BENHAM HIGH YIELD FUND
       
<S>                      <C>
<PERIOD-TYPE>                  6-MOS
<FISCAL-YEAR-END>              OCT-31-1998
<PERIOD-END>                   APR-30-1998                             <F1>
<INVESTMENTS-AT-COST>                                      30,366,709
<INVESTMENTS-AT-VALUE>                                     30,768,588
<RECEIVABLES>                                               1,067,292
<ASSETS-OTHER>                                                      0
<OTHER-ITEMS-ASSETS>                                                0
<TOTAL-ASSETS>                                             31,835,880
<PAYABLE-FOR-SECURITIES>                                    1,309,086
<SENIOR-LONG-TERM-DEBT>                                             0
<OTHER-ITEMS-LIABILITIES>                                   1,046,478
<TOTAL-LIABILITIES>                                         2,355,564
<SENIOR-EQUITY>                                                28,781
<PAID-IN-CAPITAL-COMMON>                                   28,929,367
<SHARES-COMMON-STOCK>                                       2,878,065
<SHARES-COMMON-PRIOR>                                       1,117,810
<ACCUMULATED-NII-CURRENT>                                           0
<OVERDISTRIBUTION-NII>                                              0
<ACCUMULATED-NET-GAINS>                                       120,289
<OVERDISTRIBUTION-GAINS>                                            0
<ACCUM-APPREC-OR-DEPREC>                                      401,879
<NET-ASSETS>                                               29,480,316
<DIVIDEND-INCOME>                                                   0
<INTEREST-INCOME>                                             943,495
<OTHER-INCOME>                                                      0
<EXPENSES-NET>                                                 94,867
<NET-INVESTMENT-INCOME>                                       848,628
<REALIZED-GAINS-CURRENT>                                      120,289
<APPREC-INCREASE-CURRENT>                                     513,551
<NET-CHANGE-FROM-OPS>                                       1,482,468
<EQUALIZATION>                                                      0
<DISTRIBUTIONS-OF-INCOME>                                     848,628
<DISTRIBUTIONS-OF-GAINS>                                            0
<DISTRIBUTIONS-OTHER>                                               0
<NUMBER-OF-SHARES-SOLD>                                     3,251,674
<NUMBER-OF-SHARES-REDEEMED>                                 1,563,364
<SHARES-REINVESTED>                                            71,945
<NET-CHANGE-IN-ASSETS>                                     29,480,316
<ACCUMULATED-NII-PRIOR>                                             0
<ACCUMULATED-GAINS-PRIOR>                                           0
<OVERDISTRIB-NII-PRIOR>                                             0
<OVERDIST-NET-GAINS-PRIOR>                                          0
<GROSS-ADVISORY-FEES>                                          94,768
<INTEREST-EXPENSE>                                                  0
<GROSS-EXPENSE>                                                94,867
<AVERAGE-NET-ASSETS>                                       21,233,909
<PER-SHARE-NAV-BEGIN>                                            9.91
<PER-SHARE-NII>                                                  0.41
<PER-SHARE-GAIN-APPREC>                                          0.33
<PER-SHARE-DIVIDEND>                                             0.41
<PER-SHARE-DISTRIBUTIONS>                                        0.00
<RETURNS-OF-CAPITAL>                                             0.00
<PER-SHARE-NAV-END>                                             10.24
<EXPENSE-RATIO>                                                  0.90
<AVG-DEBT-OUTSTANDING>                                              0
<AVG-DEBT-PER-SHARE>                                             0.00
<FN>
<F1> SCHEDULE REFLECTS THE TOTAL FOR ALL CLASSES, EXCEPT WHERE INDICATED.
<F2> INVESTOR CLASS INFORMATION ONLY.
</FN>
        

</TABLE>


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