TWENTIETH CENTURY STRATEGIC PORTFOLIOS INC /MO/
497, 1996-09-06
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                               TWENTIETH CENTURY
                             Asset Allocation Funds

                            Advisor Class Prospectus
                                  September 3,
                                      1996

                 TWENTIETH CENTURY STRATEGIC ASSET ALLOCATIONS
- --------------------------------------------------------------------------------

TWENTIETH CENTURY

     Twentieth Century Strategic Asset Allocations, Inc., a member of the
Twentieth Century family of funds, is an open-end diversified management
investment company. Three series of shares, or "funds," are described in this
Prospectus, Strategic Allocation: Conservative, Strategic Allocation: Moderate
and Strategic Allocation: Aggressive.

     The investment objective of each fund is to provide as high a level of
total return (capital appreciation plus dividend and interest income) as is
consistent with its risk profile. Each fund seeks to achieve its investment
objective by diversifying investments among three asset classes -- equity
securities, bonds and cash equivalent instruments, the mix of which will depend
on the risk profile of the particular fund. The funds are designed for investors
with investment time horizons of at least five years who want to diversify their
investments among these various asset classes through a single investment
vehicle. There is no assurance that the funds will achieve their investment
objectives. See "Investment Policies of the Funds," page 5.

     Each fund's shares offered in this Prospectus (the Advisor Class shares)
are sold at their net asset value with no sales charges or commissions. The
Advisor Class shares are subject to a Rule 12b-1 shareholder services fee and
distribution fee as described in this Prospectus.

     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.

     This Prospectus gives you information about the funds that you should know
before investing. You should read this Prospectus carefully and retain it for
future reference. Additional information is included in the Statement of
Additional Information dated September 3, 1996, and filed with the Securities
and Exchange Commission. It is incorporated in this Prospectus by reference. To
obtain a copy without charge, call or write:

                         Twentieth Century Mutual Funds
                       4500 Main Street o P.O. Box 419385
                  Kansas City, MO 64141-6385 o 1-800-345-3533
                       International calls: 816-531-5575
                    Telecommunications Device for the Deaf:
                   1-800-345-1833 o In Missouri: 816-753-0700
                   Internet: http://www.twentieth-century.com

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THESE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE SECURITIES AND
EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION, NOR HAS THE SECURITIES
AND EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION PASSED UPON THE
ACCURACY OR ADEQUACY OF THIS PROSPECTUS. ANY REPRESENTATION TO THE CONTRARY IS A
CRIMINAL OFFENSE.

<PAGE>

                               TABLE OF CONTENTS
- --------------------------------------------------------------------------------

         TRANSACTION AND OPERATING EXPENSE TABLE...................3  
         FINANCIAL HIGHLIGHTS......................................4  
         
                        INFORMATION REGARDING THE FUNDS

         INVESTMENT POLICIES OF THE FUNDS..........................5 
            Investment Objectives..................................5 
            The Funds..............................................5 
            Investment Strategy and Asset Diversification..........5 
            Investment Approach and Practices......................6 
            General Portfolio Management...........................8 
         OTHER INVESTMENT PRACTICES,                                 
              THEIR CHARACTERISTICS AND RISKS .....................8 
            Equity Securities......................................8 
            Foreign Securities.....................................9 
            Mortgage-Related and Other Asset-Backed Securities....10 
            Forward Currency Exchange Contracts                      
              and Options Thereon.................................11 
            Portfolio Turnover....................................12 
            Repurchase Agreements.................................12 
            Futures Contracts.....................................12 
            Derivative Securities.................................13 
            When-Issued Securities................................14 
            Short Sales...........................................14 
            Rule 144A Securities..................................14 
         PERFORMANCE ADVERTISING..................................14 
         
           HOW TO INVEST WITH TWENTIETH CENTURY AND THE BENHAM GROUP

         HOW TO PURCHASE AND SELL TWENTIETH CENTURY FUNDS.........16
         HOW TO EXCHANGE YOUR INVESTMENT FROM                       
              ONE TWENTIETH CENTURY FUND TO ANOTHER...............16
         HOW TO REDEEM SHARES.....................................16
            Special Requirements for Large Redemptions............17
         TELEPHONE SERVICES.......................................17
            Investors Line........................................17
            Automated Information Line............................17
         
                     ADDITIONAL INFORMATION YOU SHOULD KNOW

         SHARE PRICE..............................................18
            When Share Price Is Determined........................18
            How Share Price Is Determined.........................18
            Where to Find Information About Share Price...........19
         DISTRIBUTIONS ...........................................19
         TAXES....................................................19
            Tax-Deferred Accounts.................................19
            ble Accounts..........................................20
         MANAGEMENT...............................................21
            Investment Management.................................21
            Code of Ethics........................................22
            Transfer and Administrative Services..................23
         DISTRIBUTION OF FUND SHARES..............................23
            Service and Distribution Fees.........................23
         FURTHER INFORMATION ABOUT TWENTIETH CENTURY..............23
         

                                       2


                    TRANSACTION AND OPERATING EXPENSE TABLE
- --------------------------------------------------------------------------------

                                     Strategic      Strategic      Strategic
                                    Allocation:    Allocation:    Allocation:
                                   Conservative     Moderate      Aggressive

SHAREHOLDER TRANSACTION EXPENSES:
   Maximum Sales Load Imposed
      on Purchases..................    none           none          none
   Maximum Sales Load Imposed on
   Reinvested Dividends.............    none           none          none
   Deferred Sales Load..............    none           none          none
   Redemption Fee...................    none           none          none
   Exchange Fee.....................    none           none          none

ANNUAL FUND OPERATING EXPENSES 
(as a percentage of net assets):
   Management Fees..................   0.75%(1)       0.85%(2)      0.95%(3)
   12b-1 Fees(4)....................   0.50%          0.50%         0.50%
   Other Expenses(5)................   0.00%          0.00%         0.00%
   Total Fund Operating Expenses ...   1.25%          1.35%         1.45%

Example: You would pay the following
expenses on a $1,000 investment,
assuming a 5% annual return and
redemption at the end of each time
period(6):                    1 year     $13            $14           $15
                             3 years      40             43            46

(1) The fund pays an annual management fee equal to 0.75% of its first $1
    billion of average net assets and 0.65% of average net assets over $1 
    billion.

(2) The fund pays an annual management fee equal to 0.85% of its first $1
    billion of average net assets and 0.75% of average net assets over $1 
    billion.

(3) The fund pays an annual management fee equal to 0.95% of its first $1
    billion of average net assets and 0.85% of average net assets over $1 
    billion.

(4) The 12b-1 fee is designed to permit investors to purchase Advisor Class
    shares through broker-dealers, 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 "Distribution Services," 
    page 23.

(5) Other expenses, which include the fees and expenses (including legal counsel
    fees) of those directors who are not "interested persons" as defined in the
    Investment Company Act, are expected to be approximately .00035 of 1% of 
    average net assets for the fund's first fiscal year.

(6) Assumes that the average net assets of the funds remain constant at less
    than $1 billion.

     The purpose of this table is to help you understand the various costs and
expenses that you, as a shareholder, will bear directly or indirectly in
connection with an investment in the class of shares of the Twentieth Century
funds offered by this Prospectus. The example set forth above assumes
reinvestment of all dividends and distributions and uses a 5% annual rate of
return as required by Securities and Exchange Commission regulations.

     NEITHER THE 5% RATE OF RETURN NOR THE EXPENSES SHOWN ABOVE SHOULD BE
CONSIDERED INDICATIONS OF PAST OR FUTURE RETURNS AND EXPENSES. ACTUAL RETURNS
AND EXPENSES MAY BE GREATER OR LESS THAN THOSE SHOWN.

     The shares offered by this Prospectus are Advisor Class shares. The funds
offer two other classes of shares, one of which is primarily made available to
retail investors and one that is primarily made available to institutional
investors. The other classes have different fee structures than the Advisor
Class, resulting in different performance for those other classes. For
additional information about the various classes, see "Further Information About
Twentieth Century," page 23.

- --------------------------------------------------------------------------------
NO PERSON IS AUTHORIZED BY THE FUNDS TO GIVE ANY INFORMATION OR MAKE ANY
REPRESENTATION OTHER THAN THOSE CONTAINED IN THIS PROSPECTUS OR IN OTHER PRINTED
OR WRITTEN MATERIAL ISSUED BY OR ON BEHALF OF THE FUNDS, AND YOU SHOULD NOT RELY
ON ANY OTHER INFORMATION OR REPRESENTATION.


                                       3


- --------------------------------------------------------------------------------
FINANCIAL HIGHLIGHTS (For a Share Outstanding Throughout the Period)

     The Advisor Class of the funds was established September 3, 1996. The
financial information in this table regarding selected per share data for each
of the funds reflects the performance of the funds' Investor Class of shares,
which has a total expense ratio that is 0.25% lower than the Advisor Class. Had
the Advisor Class been in existence for such funds for the time period
presented, the funds' performance information would be lower as a result of the
additional expense.

     The Financial Highlights table below sets forth certain information
concerning the historic investment results of the funds. The financial data
included in the table, which is unaudited, has been derived from the financial
statements contained in the Statement of Additional Information.
<TABLE>
<CAPTION>
                                              STRATEGIC                   STRATEGIC                   STRATEGIC
                                             ALLOCATION:                 ALLOCATION:                 ALLOCATION:
                                            CONSERVATIVE                  MODERATE                   AGGRESSIVE
                                        ---------------------       ---------------------       --------------------
                                          February 15, 1996           February 15, 1996           February 15, 1996
                                         (Inception) through         (Inception) through         (Inception) through
                                            May 31, 1996                May 31, 1996                May 31, 1996
                                             (Unaudited)                 (Unaudited)                 (Unaudited)
- -------------------------------------------------------------------------------------------------------------------------
<S>                                             <C>                         <C>                         <C>  
NET ASSET VALUE,
BEGINNING OF PERIOD                             $5.00                       $5.00                       $5.00
                                                -----                       -----                       -----
INCOME FROM
INVESTMENT OPERATIONS

   Net Investment Income(1)                       .05                         .04                         .03

   Net Realized and
   Unrealized Gains (Losses)                     (.02)                        .12                         .20
                                                -----                       -----                       -----
   Total from
   Investment Operations                          .03                         .16                         .23
                                                -----                       -----                       -----
DISTRIBUTIONS

   From Net
   Investment Income                             (.02)                       (.02)                         --
                                                -----                       -----                       -----
NET ASSET VALUE,
END OF PERIOD                                   $5.01                       $5.14                       $5.23
                                                =====                       =====                       =====
TOTAL RETURN(2)                                   .64%                       3.11%                       4.60%

RATIOS/SUPPLEMENTAL DATA

   Ratio of Expenses to
   Average Net Assets(3)                         1.05%                       1.12%                       1.22%

   Ratio of Net Investment Income
   to Average Net Assets(3)                      3.65%                       2.74%                       1.88%

   Portfolio Turnover Rate                         25%                         24%                         34%

   Average Commission Paid per
   Share Traded                                $.0206                      $.0173                      $.0198

   Investment Security Traded
   Net Assets, End of Period (in thousands)    $8,061                     $14,953                     $16,370
- -------------------------------------------------------------------------------------------------------------------------
</TABLE>
(1)  Computed using average shares outstanding throughout the period.

(2)  Total returns for periods less than one year are not annualized. Total
     return assumes reinvestment of dividends and capital gain distributions,
     if any.

(3)  Annualized

                                       4


                        INFORMATION REGARDING THE FUNDS
- --------------------------------------------------------------------------------

INVESTMENT POLICIES
OF THE FUNDS

INVESTMENT OBJECTIVES

     Twentieth Century offers three asset allocation funds: Strategic
Allocation: Conservative, Strategic Allocation: Moderate and Strategic
Allocation: Aggressive.

     Each fund's investment objective is to obtain as high a level of total
return (capital appreciation plus dividend and interest income)as is consistent
with such fund's risk profile. As with all mutual funds, there can be no
assurance that the funds will achieve their investment objectives.

     You should be aware that the names of the funds are intended to reflect the
relative short-term price volatility risk among the three asset allocation funds
offered in this Prospectus and not as an indication of the manager's assessment
of the riskiness of the funds as compared to other mutual funds, including other
mutual funds within the Twentieth Century family of funds.

THE FUNDS

     The funds pursue a flexible approach that diversifies the funds' assets
among various classes and categories of assets. Each fund has its own mix, which
gives it a distinct risk profile and return potential. The three funds enable
investors to select the level of risk that is appropriate for their particular
situations and investment goals. See "Investment Strategy and Asset
Diversification," this page.

STRATEGIC ALLOCATION: CONSERVATIVE

     The asset mix of Strategic Allocation: Conservative seeks to provide
shareholders with regular income through its emphasis on bonds and money market
securities, combined with the potential for moderate long-term total return as a
result of its stake in equity securities. The fund's emphasis on bonds and money
market securities should help to provide a measure of principal protection while
the stock market is in a decline.

STRATEGIC ALLOCATION: MODERATE

     The asset mix of Strategic Allocation: Moderate emphasizes investments in
equity securities, but maintains a sizable stake in bonds and money market
securities. This asset mix seeks to provide long-term growth and some regular
income, while helping to moderate losses when the stock market declines.

STRATEGIC ALLOCATION: AGGRESSIVE

     The asset mix of Strategic Allocation: Aggressive emphasizes investments in
equity securities, but maintains a portion of its assets in bonds and money
market securities. This asset mix seeks to provide long-term growth, together
with a small amount of income to help cushion the volatility of the equity
portfolio.

INVESTMENT STRATEGY AND
ASSET DIVERSIFICATION

     The funds seek to achieve their investment objectives by pursuing a
strategic asset allocation strategy. Each fund will diversify its investments
among three major asset classes -- equity securities, bonds and cash equivalent
instruments.

     Each fund has its own neutral mix that represents a benchmark as to how
that fund's investments will be generally allocated among the major asset
classes over the long term. Each fund's neutral mix is set forth below:

                      NEUTRAL MIXES

                         EQUITY                  CASH
FUND                   SECURITIES    BONDS    EQUIVALENTS
- --------------------------------------------------------------------------------
Strategic Allocation:
    Conservative           40%        45%         15%
- --------------------------------------------------------------------------------
Strategic Allocation:
    Moderate               60%        30%         10%
- --------------------------------------------------------------------------------
Strategic Allocation:
    Aggressive             75%        20%         5%
- --------------------------------------------------------------------------------
     The mix of a fund will vary over short-term periods depending on the
relative performance of the various asset classes (for example, when one class
of assets increases or decreases in value at


                                       5


a different rate than the other classes). In addition, the manager may
temporarily emphasize or de-emphasize a class of assets based on market
conditions regarding the relative value of the asset class in the near term.
However, each fund has operating ranges that restrict the amount by which the
assets of each class may fluctuate. Those operating ranges are set forth below:

                    OPERATING RANGES

                         EQUITY                  CASH
FUND                   SECURITIES    BONDS    EQUIVALENTS
- --------------------------------------------------------------------------------
Strategic Allocation:
    Conservative         34-46%     38-52%      10-25%
- --------------------------------------------------------------------------------
Strategic Allocation:
    Moderate             50-70%     20-40%       5-20%
- --------------------------------------------------------------------------------
Strategic Allocation:
    Aggressive           60-90%     10-30%       0-15%
- --------------------------------------------------------------------------------

     In addition to diversifying among asset classes, the assets in the equity
and bond classes are further diversified among investment categories (or
sectors) and styles within those classes. See "Investment Approach and
Practices," below. The allocation of assets within a fund's operating range and
among the different investment categories within each class is designed to
provide a diversified portfolio emphasizing total return.

INVESTMENT APPROACH
AND PRACTICES

     As described above, each fund's assets are allocated among major asset
classes according to their respective asset mix and subject to the applicable
operating ranges. Each fund's assets are further diversified among various
investment categories and disciplines within the major asset classes, as
described below.

EQUITY SECURITIES

     The equity portion of a fund's portfolio may be invested in any type of
domestic or foreign equity security, primarily common stocks, that meets certain
fundamental and technical standards of selection. The manager will utilize two
distinct investment disciplines in managing the equity portion of each fund's
portfolio: (1) growth; and (2) value.

     The growth discipline seeks long-term capital appreciation by investing in
companies whose earnings and revenue trends meet the manager's standards of
selection, which generally means that the companies have demonstrated, or, in
the manager's opinion, have the prospects for demonstrating, accelerating
earnings and revenues as compared to prior periods and/or industry competitors.
The value investment discipline seeks capital growth by investing in equity
securities of well-established companies that are believed by the manager to be
temporarily undervalued.

     The manager believes that both value investing and growth investing provide
the potential for appreciation over time. Value investing tends to provide less
volatile results. This lower volatility means that the price of value stocks
tends not to fall as significantly as growth stocks do in down markets. However,
value stocks do not usually appreciate as significantly as growth stocks do in
up markets. In keeping with the diversification theme of these funds, and as a
result of management's belief that these styles are complementary, both
disciplines will be represented to some degree in each portfolio at all times.

     As noted, the value investment discipline tends to be less volatile than
the growth style. As a result, Strategic Allocation: Conservative will generally
have a higher proportion of its equity investments in value stocks than the
other two funds. Likewise, Strategic Allocation: Aggressive will generally have
a greater proportion of growth stocks than either Strategic Allocation: Moderate
or Strategic Allocation: Conservative.

     In addition, the equity portion of each fund's portfolio will be further
diversified among small, medium and large companies. This approach provides
investors with an additional level of diversification and enables investors to
achieve a broader exposure to the various capitalization ranges without having
to invest in multiple funds.

                                       6


     Although the funds will remain exposed to each of the investment
disciplines and categories described above, a particular discipline or
investment category may be emphasized when, in the manager's opinion, such
discipline or investment category is undervalued relative to the other
disciplines or categories. See "Other Investment Practices, Their
Characteristics and Risks," page 8.

BONDS

     The fixed income portion of a fund's portfolio will include U.S. Treasury
securities, securities issued or guaranteed by the U.S. government or a foreign
government, or an agency or instrumentality of the U.S. or a foreign government,
and non-convertible debt obligations issued by U.S. or foreign corporations. The
funds may also invest in mortgage-related and other asset-backed securities as
described under "Mortgage-Related and Other Asset-Backed Securities," page 10.
As with the equity portion of a fund's portfolio, the bond portion of a fund's
portfolio will be diversified among the various types of fixed income investment
categories described above. The manager's strategy is to actively manage the
portfolio by investing the fund's assets in sectors it believes are undervalued
(relative to the other sectors) and which represent better relative long-term
investment opportunities.

     The value of fixed income securities fluctuates based on changes in
interest rates and in the credit quality of the issuer. Debt securities that
comprise part of a fund's fixed income portfolio will primarily be limited to
"investment grade" obligations. However, Strategic Allocation: Moderate may
invest up to 5% of its assets, and Strategic Allocation: Aggressive may invest
up to 10% of its assets, in "high yield" securities. "Investment grade" means
that at the time of purchase, such obligations are rated within the four highest
categories by a nationally recognized statistical rating organization [for
example, at least Baa by Moody's Investors Service, Inc. ("Moody's") or BBB by
Standard & Poor's Corporation ("S&P")], or, if not rated, are of equivalent
investment quality as determined by the investment manager. According to
Moody's, bonds rated Baa are medium-grade and possess some speculative
characteristics. A BBB rating by S&P indicates S&P's belief that a security
exhibits a satisfactory degree of safety and capacity for repayment, but is more
vulnerable to adverse economic conditions and changing circumstances.

     "High yield" securities, sometimes referred to as "junk bonds," are higher
risk, non-convertible debt obligations that are rated below investment grade
securities, or are unrated, but with similar credit quality.

     There are no credit or maturity restrictions on the fixed income securities
in which the high yield portion of a fund's portfolio may be invested. Debt
securities rated lower than Baa by Moody's or BBB by S&P or their equivalent are
considered by many to be predominantly speculative. Changes in economic
conditions or other circumstances are more likely to lead to a weakened capacity
to make principal and interest payments on such securities than is the case with
higher quality debt securities. Regardless of rating levels, all debt securities
considered for purchase by the fund are analyzed by the investment manager to
determine, to the extent reasonably possible, that the planned investment is
sound, given the investment objective of the fund. See "An Explanation of Fixed
Income Securities Ratings" in the Statement of Additional Information.

     Under normal market conditions, the maturities of fixed-income securities
in which the funds invest will range from 2 to 30 years.

CASH EQUIVALENTS

     The cash equivalent portion of a fund's portfolio may be invested in
high-quality money market instruments (denominated in U.S. dollars or foreign
currencies), including U.S. government obligations, obligations of domestic and
foreign banks, short-term corporate debt instruments and repurchase agreements.


                                       7


GENERAL PORTFOLIO MANAGEMENT

     Within each asset class, each fund's holdings will be invested across
industry groups and issuers that meet its investment criteria. This diversity of
investment is intended to help reduce the risk created by over-concentration in
a particular industry or issuer.

     The funds are "strategic" rather than "tactical" allocation funds, which
means that the manager does not try to time the market to identify the exact
time when a major reallocation should be made. Instead, the manager utilizes a
longer-term approach in pursuing the funds' investment objectives, and thus
selects a blend of investments in the various asset classes.

     The manager regularly reviews each fund's investments and allocations and
may make changes in the particular securities within each asset class or to a
fund's asset mix (within the defined operating ranges) to favor investments that
it believes will provide the most favorable outlook for achieving a fund's
objective. Recommended reallocations may be implemented promptly or may be
implemented gradually. In order to minimize the impact of reallocations on a
fund's performance, the manager will generally attempt to reallocate assets
gradually.

     In determining the allocation of assets among U.S. and foreign capital
markets, the manager considers the condition and growth potential of the various
economies; the relative valuations of the markets; and social, political, and
economic factors that may affect the markets.

     In selecting securities in foreign currencies, the manager considers, among
other factors, the impact of foreign exchange rates relative to the U.S. dollar
value of such securities. The manager may seek to hedge all or a part of a
fund's foreign currency exposure through the use of forward foreign currency
contracts or options thereon. See "Forward Currency Exchange Contracts and
Options Thereon," page 11.

     The funds attempt to diversify across asset classes and investment
categories to a greater extent than mutual funds that invest primarily in equity
securities or primarily in fixed income securities. However, the funds are
designed to fit three general risk profiles and may not provide an appropriately
balanced investment plan for all investors.

     The funds' investment objectives, as identified on the front cover of this
Prospectus, and any other investment policies designated as "fundamental" in
this Prospectus or in the Statement of Additional Information, cannot be changed
without the approval of the shareholders entitled to cast a majority of the
outstanding votes of the corporation, as defined by the Investment Company Act.
Unless otherwise noted, all other investment policies and practices are
nonfundamental and may be changed without shareholder approval.

OTHER INVESTMENT PRACTICES,
THEIR CHARACTERISTICS AND RISKS

     For additional information, see "Investment Restrictions" in the Statement
of Additional Information.

EQUITY SECURITIES

     In addition to investing in common stocks, the funds may invest in other
equity securities and equity equivalents. Other equity securities and equity
equivalents include securities that permit the fund to receive an equity
interest in an issuer, the opportunity to acquire an equity interest in an
issuer, or the opportunity to receive a return on its investment that permits
the fund to benefit from the growth over time in the equity of an issuer.
Examples of equity securities and equity equivalents include preferred stock,
convertible preferred stock and convertible debt securities.

     Each fund will limit its purchase of convertible debt securities to those
that, at the time of purchase, are rated at least B- by S&P or B3 by Moody's, or
if not rated by S&P or Moody's are of equivalent investment quality as
determined by the

                                       8


manager. A fund's investments in convertible debt securities and other high
yield, non-convertible debt securities rated below investment grade will
comprise less than 35% of the fund's net assets. Debt securities rated below the
four highest categories are not considered "investment grade" obligations. These
securities have speculative characteristics and present more credit risk than
investment grade obligations. For a description of the S&P and Moody's ratings
categories, see "An Explanation of Fixed Income Securities Ratings," in the
Statement of Additional Information. Equity equivalents may also include
securities whose value or return is derived from the value or return of a
different security. Depositary receipts are an example of the type of equity
equivalent security in which the funds might invest.

FOREIGN SECURITIES

     Each fund may invest in the securities of foreign issuers, including debt
securities of foreign governments and their agencies, when these securities meet
its standards of selection. The manager defines "foreign issuer" as an issuer of
securities that is domiciled outside the United States, derives at least 50% of
its total revenue from production or sales outside the United States, and/or
whose principal trading market is outside the United States.

     Strategic Allocation: Conservative will generally invest between 7 and 17%
of its assets in foreign securities; Strategic Allocation: Moderate will
generally invest between 10 and 30% of its assets in foreign securities; and
Strategic Allocation: Aggressive will generally invest between 15 and 35% of its
assets in foreign securities. With regard to foreign investments by Strategic
Allocation: Conservative, the principal activities of such issuers will be
located in developed countries. With regard to Strategic Allocation: Aggressive
and Strategic Allocation: Moderate, the principal activities of such issuers may
be located in either developed or developing countries, but the majority of the
activities will be in developed countries.

     The funds may make such investments either directly in foreign securities
or indirectly by purchasing depositary receipts or depositary shares of similar
instruments ("depositary receipts") for foreign securities. Depositary receipts
are securities that are listed on exchanges or quoted in the domestic
over-the-counter markets in one country but represent shares of issuers
domiciled in another country. Direct investments in foreign securities may be
made either on foreign securities exchanges or in the over-the-counter markets.

     Subject to its investment objective and policies, each fund may invest in
common stocks, convertible securities, preferred stocks, bonds, notes and other
debt securities of foreign issuers and debt securities of foreign governments
and their agencies. The credit quality standards applicable to domestic
securities purchased by each fund are also applicable to its foreign securities
investments.

     Investments in foreign securities may present certain risks, including
those resulting from fluctuations in currency exchange rates, future political
and economic developments, 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.

     Strategic Allocation: Moderate and Strategic Allocation: Aggressive may
invest a portion of their international holdings in securities of issuers in
emerging market (developing) countries. Investing in emerging market countries
involves significantly higher risk than investing in countries with developed
markets as a result of uncertainty regarding the companies and the markets in
which they operate. Securities prices can be more volatile than in developed
countries as a result of investor concerns regarding the stability of the
government, internal economic pressures, and the impact of external economic


                                       9


factors. In addition, securities markets in emerging market countries may trade
a small number of securities and may be unable to respond effectively to
increases in trading volume, potentially resulting in a lack of liquidity and in
volatility in the price of securities traded on those markets. Also, securities
markets in emerging market countries typically offer less regulatory protection
for investors. See "Investing in Emerging Market Countries," in the Statement of
Additional Information.

MORTGAGE-RELATED AND OTHER ASSET-BACKED SECURITIES

     The funds may purchase mortgage-related and other asset-backed securities.
Mortgage pass-through securities are securities representing interests in
"pools" of mortgages in which payments of both interest and principal on the
securities are generally made monthly, in effect "passing through" monthly
payments made by the individual borrowers on the residential mortgage loans that
underlie the securities (net of fees paid to the issuer or guarantor of the
securities).

     Early repayment of principal on mortgage pass-through securities (arising
from prepayments of principal due to sale of the underlying property,
refinancing, or foreclosure, net of fees and costs which may be incurred) may
expose the funds to a lower rate of return upon reinvestment of principal. Also,
if a security subject to prepayment were purchased at a premium, in the event of
prepayment, the value of the premium would be lost. Like other fixed-income
securities, when interest rates rise, the value of a mortgage-related security
generally will decline; however, when interest rates decline, the value of
mortgage-related securities with prepayment features may not increase as much as
other fixed-income securities.

     Payment of principal and interest on some mortgage pass-through securities
(but not the market value of the securities themselves) may be guaranteed by the
full faith and credit of the U.S. government in the case of securities
guaranteed by the Government National Mortgage Association (GNMA), or guaranteed
by agencies or instrumentalities of the U.S. government in the case of
securities guaranteed by the Federal National Mortgage Association (FNMA) or the
Federal Home Loan Mortgage Corporation (FHLMC), which are supported only by the
discretionary authority of the U.S. government to purchase the agency's
obligations.

     Mortgage pass-through securities created by nongovernmental issuers (such
as commercial banks, savings and loan institutions, private mortgage insurance
companies, mortgage bankers and other secondary market issuers) may be supported
by various forms of insurance or guarantees, including individual loan, title,
pool and hazard insurance and letters of credit, which may be issued by
governmental entities, private insurers, or the mortgage poolers.

     The funds may also invest in collateralized mortgage obligations (CMOs).
CMOs are mortgage-backed securities issued by government agencies;
single-purpose, stand-alone financial subsidiaries; trusts established by
financial institutions; or similar institutions. The funds may buy CMOs that
meet the following criteria:

      o  Are collateralized by pools of mortgages in which payment of principal
         and interest of each mortgage is guaranteed by an agency or
         instrumentality of the U.S. government;

      o  Are collateralized by pools of mortgages in which payment of principal
         and interest are guaranteed by the issuer, and the guarantee is
         collateralized by U.S. government securities;

      o  Are securities in which the proceeds of the issue are invested in
         mortgage securities and payments of principal and interest are
         supported by the credit of an agency or instrumentality of the U.S.
         government.

                                       10


FORWARD CURRENCY EXCHANGE CONTRACTS AND OPTIONS THEREON

     Some of the securities held by the funds may be denominated in foreign
currencies. Other securities, such as depositary receipts, may be denominated in
U.S. dollars but have a value that is dependent on the performance of a foreign
security, as valued in the currency of its home country. As a result, the value
of a fund's portfolio may be affected by changes in the exchange rate between
foreign currencies and the U.S. dollar, as well as by changes in the market
value of the securities themselves. The performance of foreign currencies
relative to the dollar may be a factor in a fund's overall performance.

     To protect against adverse movements in exchange rates between currencies,
the funds may, for hedging purposes only, enter into forward currency exchange
contracts and buy put and call options relating to interest rate futures
contracts. A forward currency exchange contract obligates the fund to purchase
or sell a specific currency at a future date at a specific price. An option is a
contractual right to acquire a financial asset, such as a security, the
securities of a market index, a foreign currency or a foreign currency exchange
contract, at a specific price at the end of a specified term.

     Each fund may elect to enter into a forward currency exchange contract or
an option thereon with respect to a specific purchase or sale of a security, or
with respect to the fund's portfolio positions generally.

     By entering into a forward currency exchange contract or an option thereon
with respect to the specific purchase or sale of a security denominated in a
foreign currency, the funds can "lock in" an exchange rate between the trade and
settlement dates for that purchase or sale. This practice is sometimes referred
to as "transaction hedging." Each fund may enter into transaction hedging
contracts with respect to all or a substantial portion of its foreign securities
trades.

     When the manager believes that a particular currency may decline in value
compared to the dollar, the funds may enter into forward currency exchange
contracts or options thereon to sell an amount of foreign currency equal to the
value of some or all of a fund's portfolio securities either denominated in, or
whose value is tied to, that currency. This practice is sometimes referred to as
"portfolio hedging." A fund may not enter into a portfolio hedging transaction
where the fund would be obligated to deliver an amount of foreign currency in
excess of the aggregate value of the fund's portfolio securities or other assets
denominated in, or whose value is tied to, that currency.

     The funds will make use of portfolio hedging to the extent deemed
appropriate by the manager. However, it is anticipated that the funds will enter
into portfolio hedges much less frequently than transaction hedges.

     If a fund enters into a forward currency exchange contract or an option
thereon, the fund, when required, will instruct its custodian bank to segregate
cash or liquid high-grade securities in a separate account in an amount
sufficient to cover its obligation under the contract. For options sold, a fund
will segregate cash or liquid high-grade securities equal to the value of the
securities underlying the options unless the options are otherwise secured.
Those assets will be valued at market daily, and if the value of the segregated
securities declines, additional cash or securities will be added so that the
value of the account is not less than the amount of the fund's commitment. At
any given time, no more than 10% of a fund's assets will be committed to a
segregated account in connection with portfolio hedging transactions.

     Predicting the relative future values of currencies is very difficult, and
there is no assurance that any attempt to protect the funds against adverse
currency movements through the use of forward currency exchange contracts will
be successful. In addition, the use of forward currency exchange contracts tends
to limit the

                                       11


potential gains that might result from a positive change in the relationship
between the foreign currency and the U.S. dollar.

PORTFOLIO TURNOVER

     The portfolio turnover rates of the funds are shown in the Financial
Highlights table on page 4 of this Prospectus.

     Investment decisions to purchase and sell securities are based on the
anticipated contribution of the security in question to a 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 and, accordingly, the
annual portfolio turnover rate cannot be accurately predicted.

     The portfolio turnover of the funds may be higher than other investment
companies with similar investment objectives. Higher turnover would generate
correspondingly greater brokerage commissions, which is a cost that the funds
pay directly. Portfolio turnover may also affect the character of capital gains,
if any, realized and distributed by a fund since short-term capital gains are
taxable as ordinary income.

     The manager estimates, pursuant to SEC requirements, that the rate of
portfolio turnover will, generally, not exceed 150% per year.

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 fund's investment policies.

     A repurchase agreement occurs when a fund purchases an interest-bearing
obligation from a bank or broker-dealer registered under the Securities Exchange
Act of 1934 and simultaneously agrees to sell it back on a specified date in the
future (usually less than one week later) at a higher price. The repurchase
price reflects an agreed-upon interest rate during the time the fund's money is
invested in the security and is considered by the staff of the SEC to be a loan
by the fund.

     A fund's risk in connection with repurchase agreements is the ability of
the seller to pay the repurchase price on the repurchase date. If the seller
defaults, the fund may incur costs, delays or losses. Management monitors the
creditworthiness of sellers.

     The funds will enter into repurchase agreements only with those commercial
banks and broker-dealers whose creditworthiness has been reviewed and found
satisfactory by the funds' management pursuant to criteria adopted by the funds'
board of directors.

FUTURES CONTRACTS

     Each fund may enter into domestic and foreign futures contracts. A futures
contract is an agreement to take or make delivery of a financial asset at a
specific price at the end of the contract period. Some futures contracts, such
as market index futures, require settlement in cash based on the difference
between the value of the underlying financial assets at the beginning and at the
end of the contract period. Rather than actually purchasing the specific
financial assets, or the securities of a market index, the manager may purchase
a futures contract, which reflects the value of such underlying securities. For
example, S&P 500 futures reflect the value of the underlying companies that
comprise the S&P 500 Composite Stock Price Index. If the aggregate market value
of the underlying index securities increases or decreases during the contract
period, the value of the S&P 500 futures can be expected to reflect such
increase or decrease. The manager may use index futures to efficiently expose to
the equity markets a portion of a fund's assets that is being held for future
investment opportunities.

     When a fund enters into a futures contract, it must make a deposit of cash
or high-quality debt securities, known as "initial margin," as partial security
for its performance under the contract. As the value of the underlying financial
assets

                                       12


fluctuates, either party to the contract is required to make additional margin
payments, known as "variation margin," to cover any additional obligation it may
have under the contract. Assets set aside by a fund as initial or variable
margin may not be disposed of so long as the fund maintains the contract.

     The funds may not purchase leveraged futures. A fund will deposit in a
segregated account with its custodian bank cash or high-quality debt securities
in an amount equal to the fluctuating market value of the index contracts it has
purchased, less any margin deposited on its position. The funds will only invest
in exchange-traded futures.

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 or S&P 500 futures), 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 S&P 500 Index would
be a permissible investment since each of the funds may invest in the securities
of companies comprising the S&P 500 Index (assuming they otherwise meet the
other requirements for the fund), while 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 of 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:

      o  the risk that the underlying security, interest rate, market index or
         other financial asset will not move in the direction the portfolio
         manager anticipates;

      o  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;

      o  the risk that adverse price movements in an instrument can result in a
         loss substantially greater than a fund's initial investment; and

      o  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 derivative securities
annually.

                                       13


WHEN-ISSUED SECURITIES

     Each fund may purchase new issues of securities on a when-issued basis
without limit when, in the opinion of the manager, such purchases will further
the investment objectives of such fund. The price of when-issued securities is
established at the time the commitment to purchase is made. Delivery of and
payment for these securities typically occur 15 to 45 days after the commitment
to purchase. 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. A separate account consisting of cash or
high-quality liquid debt securities in an amount at least equal to the
when-issued commitments will be established and maintained with the custodian.
No income will accrue to the fund prior to delivery.

SHORT SALES

     Each fund may engage in short sales if, at the time of the short sale, the
fund owns or has the right to acquire an equal amount of the security being sold
short at no additional cost. These transactions allow a fund to hedge against
price fluctuations by locking in a sale price for securities it does not wish to
sell immediately.

     A fund may make a short sale 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 and for purposes of satisfying certain tests
applicable to regulated investment companies under the Internal Revenue Code and
Regulations.

RULE 144A SECURITIES

     The funds may, from time to time, purchase 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 buyers 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 Securities and Exchange Commission 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 manager.
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 security
that is illiquid. In such an event, the funds' manager will consider appropriate
remedies to minimize the effect on such fund's liquidity. No fund may invest
more than 15% of its assets in illiquid securities (securities that may not be
sold within seven days at approximately the price used in determining the net
asset value of fund shares).

PERFORMANCE ADVERTISING

     From time to time, the funds may advertise performance data. Fund
performance may be shown by presenting one or more performance measurements,
including cumulative total return or average annual total return. Performance
data may be quoted separately for the Advisor Class and the other classes
offered by the funds.

     Cumulative total return data is computed by considering all elements of
return, including

                                       14


reinvestment of dividends and capital gains distributions, over a stated period
of time. Average annual total return is determined by computing the annual
compound return over a stated period of time that would have produced the fund's
cumulative total return over the same period if the fund's performance had
remained constant throughout.

     A quotation of yield reflects a fund's income over a stated period of time,
expressed as a percentage of the fund's share price.

     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.

     Yields are calculated according to accounting methods that are standardized
in accordance with SEC rules for all stock and bond funds. Because yield
accounting methods differ from the methods used for other accounting purposes, a
fund's yield may not equal the income paid on your shares or the income reported
in the fund's financial statements.

     Each fund also may include in advertisements data comparing performance
with the performance of non-related investment media, published editorial
comments and performance rankings compiled by independent organizations (such as
Lipper Analytical Services) and publications that monitor the performance of
mutual funds. Performance information may be quoted numerically or may be
presented in a table, graph or other illustration. In addition, fund performance
may be compared to well-known indicies of market performance including the
Standard & Poor's (S&P) 500 Index and the Dow Jones Industrial Average. The
performance of a fund may also be compared, on a relative basis, to the other
funds in our fund family. This relative comparison, which may be based upon
historical or expected fund performance, volatility or other fund
characteristics, may be presented numerically, graphically or in text. The
performance of a fund may also be combined or blended with other funds in our
fund family, and that combined or blended performance may be compared to the
same indices to which individual funds may be compared.

     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.


                                       15


                        INFORMATION REGARDING THE FUNDS
- --------------------------------------------------------------------------------

     The following section explains how to purchase, exchange and redeem Advisor
Class shares of the funds offered by this Prospectus.

HOW TO PURCHASE AND
SELL TWENTIETH CENTURY FUNDS

     One or more of the funds offered by this Prospectus is available as an
investment option under your employer-sponsored retirement or savings plan or
through or in connection with a program, product or service offered by a
financial intermediary, such as a bank, broker-dealer or insurance company.
Since all records of your share ownership are maintained by your plan sponsor,
plan recordkeeper, or other financial intermediary, all orders to purchase,
exchange and redeem shares must be made through your employer or other financial
intermediary, as applicable.

     If you are purchasing through a retirement or savings plan, the
administrator of your plan or your employee benefits office can provide you with
information on how to participate in your plan and how to select Twentieth
Century funds as an investment option.

     If you are purchasing through a financial intermediary, you should contact
your service representative at the financial intermediary for information about
how to select Twentieth Century funds.

     If you have questions about a fund, see "Investment Policies of the Funds,"
page 5, or call our Investors Line at 1-800-345-3533.

     Orders to purchase shares are effective on the day we receive payment. See
"When Share Price is Determined," page 18.

     We may discontinue offering shares generally in the funds (including any
class of shares of a fund) or in any particular state without notice to
shareholders.

HOW TO EXCHANGE YOUR
INVESTMENT FROM ONE TWENTIETH
CENTURY FUND TO ANOTHER

     Your plan or program may permit you to exchange your investment in the
shares of a fund for shares of another fund in our family. See your plan
administrator, employee benefits office or financial intermediary for details on
the rules in your plan governing exchanges.

     Exchanges are made at the respective net asset values, next computed after
receipt of the exchange instruction by us. If in any 90-day period, the total of
the exchanges and redemptions from the account of any one plan participant or
financial intermediary client exceeds the lesser of $250,000 or 1% of a fund's
assets, further exchanges may be subject to special requirements to comply with
our policy on large equity fund redemptions. See "Special Requirements for Large
Redemptions," page 17.

HOW TO REDEEM SHARES

     Subject to any restrictions imposed by your employer's plan or financial
intermediary's program, you can sell ("redeem") your shares through the plan or
financial intermediary at their net asset value. Your plan administrator,
trustee, or financial intermediary or other designated person must provide us
with redemption instructions. The shares will be redeemed at the net asset value
next computed after receipt of the instructions in good order. See "When Share
Price Is Determined," page 18. If you have any questions about how to redeem,
contact your plan administrator, employee benefits office, or service
representative at your financial intermediary, as applicable.


                                       16


SPECIAL REQUIREMENTS FOR
LARGE REDEMPTIONS

     We have elected to be governed by Rule 18f-1 under the Investment Company
Act, which obligates each fund to redeem shares in cash, with respect to any one
participant account during any 90-day period, up to the lesser of $250,000 or 1%
of the assets of the fund. Although redemptions in excess of this limitation
will also normally be paid in cash, we reserve the right to honor these
redemptions by making payment in whole or in part in readily marketable
securities (a "redemption-in-kind"). If payment is made in securities, the
securities will be selected by the fund, will be valued in the same manner as
they are in computing the fund's net asset value and will be provided to the
redeeming plan participant or financial intermediary in lieu of cash without
prior notice.

     If you expect to make a large redemption and would like to avoid any
possibility of being paid in securities, you may do so by providing 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.
Receipt of your instruction 15 days prior to the transaction provides the fund
with sufficient time to raise the cash in an orderly manner to pay the
redemption and thereby minimizes the effect of the redemption on the fund and
its remaining shareholders.

     Despite its 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.

TELEPHONE SERVICES

INVESTORS LINE

     You may reach one of our Institutional Service Representatives by calling
our Investors Line at 1-800-345-3533. On our Investors Line you may request
information about our funds and a current prospectus, or get answers to any
questions that you may have about the funds and the services we offer.

AUTOMATED INFORMATION LINE

In addition to reaching us on our Investors Line, you may also reach us by
telephone on our Automated Information Line, 24 hours a day, seven days a week,
at 1-800-345-8765. By calling the Automated Information Line you may listen to
fund prices, yields and total return figures.


                                       17


                     ADDITIONAL INFORMATION YOU SHOULD KNOW
- --------------------------------------------------------------------------------

SHARE PRICE

WHEN SHARE PRICE IS DETERMINED

     The price of your shares is also referred to as their net asset value. Net
asset value is determined by calculating the total value of a fund's assets,
deducting total liabilities and dividing the result by the number of shares
outstanding. Net asset value is determined at the close of regular trading on
each day that the New York Stock Exchange is open.

     Investments and requests to redeem or exchange shares will receive the
share price next determined after we receive your investment, redemption or
exchange request. For example, investments and requests to redeem or exchange
shares received by us or one of our authorized agents before the close of
business on the New York Stock Exchange, usually 3 p.m. Central time, are
effective on, and will receive the price determined, that day as of the close of
the Exchange. Investment, redemption and exchange requests received thereafter
are effective on, and receive the price determined, as of the close of the
Exchange on the next day the Exchange is open.

     Investments are considered received only when your check or wired funds are
received by us. Wired funds are considered received on the day they are
deposited in our bank account if your telephone call is received before the
close of business on the Exchange and the money is deposited that day.

     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 and to make payment
for any purchase transactions in accordance with the fund's procedures or any
contractual arrangement with the funds or the funds' distributor in order for
you to receive that day's price.

HOW SHARE PRICE IS DETERMINED

     The valuation of assets for determining net asset value may be summarized
as follows:

     Portfolio securities of each 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
price 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.

     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 converted 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, which was likely to materially change the
net asset value, then that security would be valued at fair value as


                                       18


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 Exchange is not
open and on which a 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 a fund's portfolio may be affected on days when shares of the fund may
not be purchased or redeemed.

WHERE TO FIND INFORMATION
ABOUT SHARE PRICE

     The net asset values of the Investor Class of the funds will be published
in leading newspapers daily upon meeting the minimum fund size and number of
shareholders for each listing. The net asset value of the Advisor Class of each
fund may be obtained by calling us.

DISTRIBUTIONS

     Distributions from net investment income are declared and paid quarterly by
Strategic Allocation: Conservative and annually by Strategic Allocation:
Moderate and Strategic Allocation: Aggressive. Distributions from net realized
securities gains, if any, are declared and paid annually, usually in December,
but the funds may make distributions on a more frequent basis to comply with the
distribution requirements of the Internal Revenue Code, in all events in a
manner consistent with the provisions of the Investment Company Act.

     Participants in employer-sponsored retirement or savings plans must
reinvest all distributions. For shareholders investing in taxable accounts,
distributions will be reinvested unless you elect to receive them in cash.
Distributions of less than $10 generally will be reinvested. Distributions made
shortly after a purchase, made by check or ACH, may be held up to 15 days. You
may elect to have distributions on shares of Individual Retirement Accounts and
403(b) plans paid in cash only if you are at least 591/2 years old or
permanently and totally disabled. Distribution checks normally are mailed within
seven days after the record date.

     The board of directors may elect not to distribute capital gains in whole
or in part to take advantage of loss carryovers.

     A distribution on shares of a fund does not increase the value of your
shares or your total return. At any given time, the value of your shares
includes the undistributed net gains, if any, realized by the fund on the sale
of portfolio securities and undistributed dividends and interest received, less
fund expenses.

     Because undistributed gains and dividends are included in the value of your
shares prior to distribution, when they are distributed, the value of your
shares will be reduced by the amount of the distribution. If you buy your shares
through a taxable account just before the distribution, you will pay the full
price for your shares and then receive a portion of the purchase price back as a
taxable distribution. See "Taxes," this page.

TAXES

     Each fund has elected to be taxed as a regulated investment company under
Sub-chapter M of the Internal Revenue Code, which means that to the extent its
income is distributed to shareholders, it pays no income taxes.

TAX-DEFERRED ACCOUNTS

     If the Advisor Class shares are purchased through tax-deferred accounts,
such as a qualified employer-sponsored retirement or savings plan, income and
capital gains distributions paid by the funds will generally not be subject to
current

                                       19


taxation,  but will  accumulate in your account under the plan on a tax-deferred
basis.

     Employer-sponsored retirement and savings plans are governed by complex tax
rules. If you elect to participate in your employer's plan, consult your plan
administrator, your plan's summary plan description, or a professional tax
advisor regarding the tax consequences of participation in the plan,
contributions to, and withdrawals or distributions from the plan.

TAXABLE ACCOUNTS

     If the Advisor Class shares are purchased through taxable accounts,
distributions of net investment income and net short-term capital gains are
taxable to you as ordinary income. Distributions from net long-term capital
gains are taxable as long-term capital gains regardless of the length of time
you have held the shares on which such distributions are paid. 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 distribution of long-term capital gain to you with respect to such
shares.

     Dividends and interest received by the funds on foreign securities, and, in
limited circumstances capital gains realized by the funds upon the sale of such
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.

     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) remains the same. 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. See "Distributions," page 19.

     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.

     Distributions made to taxable accounts also may 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 adviser
about the tax status of such distributions in your own state.

     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. THIS CHARGE IS NOT
REFUNDABLE.

     Redemption of shares of a fund (including redemptions made in an exchange
transaction)

                                       20


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 generally will be long term if shareholders have held
such shares for a period of more than one year. 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.

MANAGEMENT

INVESTMENT MANAGEMENT

     Under the laws of the State of Maryland, the board of directors is
responsible for managing the business and affairs of the funds. Acting pursuant
to an investment management agreement entered into with the funds, Investors
Research Corporation ("Investors Research") serves as the investment manager of
the funds. Its principal place of business is Twentieth Century Tower, 4500 Main
Street, Kansas City, Missouri, 64111. Investors Research has been providing
investment management services to investment companies and institutional clients
since 1958.

     In June 1995, Twentieth Century Companies, Inc. ("TCC"), the parent of
Investors Research, acquired Benham Management International, Inc. In the
acquisition, Benham Management Corporation ("BMC"), the investment adviser to
the Benham Group of Mutual Funds, became a wholly owned subsidiary of TCC.
Certain employees of BMC provide investment management services to Twentieth
Century funds, while certain Twentieth Century employees provide investment
management services to Benham funds.

     Investors Research supervises and manages the investment portfolio of
Twentieth Century and directs the purchase and sale of its investment
securities. Investors Research utilizes a team of portfolio managers, assistant
portfolio managers and analysts acting together to manage the assets of the
funds. The team meets regularly to review portfolio holdings and to discuss
purchase and sale activity. The team adjusts holdings in the funds' portfolios
and the funds' asset mix as it deems appropriate in pursuit of the funds'
investment objectives. Individual portfolio manager members of the team may also
adjust portfolio holdings of the funds or of sectors of the funds as necessary
between team meetings.

     The portfolio manager members of the teams managing the funds described in
this Prospectus and their work experience for the last five years are as
follows:

     CHRISTOPHER K. BOYD, Vice President and Portfolio Manager, joined Twentieth
Century in March 1988 as an Investment Analyst, a position he held until
December 1990. At that time he was promoted to Assistant Portfolio Manager, and
then was promoted to Portfolio Manager in December 1992. He is a member of the
team that manages Growth Investors and Ultra Investors.

     C. CASEY COLTON, a Portfolio Manager for BMC, joined BMC in 1990 as a
Municipal Analyst. Mr. Colton was promoted to Portfolio Manager in 1995 and
co-manages the Benham GNMA Income Fund.

     PHILLIP N. DAVIDSON, Vice President and Portfolio Manager, joined Twentieth
Century in September 1993 as a Portfolio Manager. Prior to joining Twentieth
Century, Mr. Davidson served as an investment manager for Boatmen's Trust
Company in St. Louis, Missouri.

     GLENN A. FOGLE, Vice President and Portfolio Manager, joined Twentieth
Century in September 1990 as an Investment Analyst, a position he held until
March 1993. At that time he was promoted to Portfolio Manager. He is a member of
the team that manages Vista Investors and Giftrust Investors.


                                       21


     NORMAN E. HOOPS, Senior Vice President and Fixed Income Portfolio Manager,
joined Twentieth Century as Vice President and Portfolio Manager in November
1989. In April 1993, he became Senior Vice President. He is a member of the team
that manages Limited-Term Bond, Intermediate-Term Bond, Long-Term Bond and the
fixed income portion of Balanced Investors.

     DAVID SCHROEDER, Vice President and Portfolio Manager for BMC, joined BMC
in July 1990. Mr. Schroeder has primary responsibility for the day-to-day
operations of the Benham Treasury Note, Benham Short-Term, and Benham Long-Term
Funds. He also manages Benham Target Maturities Trust.

     JEFFREY R. TYLER, Senior Vice President and Portfolio Manager for BMC,
joined BMC in January 1988 as a Portfolio Manager. Mr. Tyler supervises the team
of other Portfolio Managers who assist in the management of the various
investment categories of the funds. Mr. Tyler also co-manages the Benham GNMA
Income Fund. He also has primary responsibility for the day-to-day operations of
the Benham Capital Manager Fund and oversees the portfolio manager's operation
of the Benham European Government Bond Fund.

     THEODORE J. TYSON, Vice President and Portfolio Manager, joined Investors
Research in 1988 and has been a member of the International Equity and
International Emerging Growth team since its inception in 1991.

     PETER A. ZUGER, Vice President and Portfolio Manager, joined Twentieth
Century in June 1993 as a Portfolio Manager. Prior to joining Twentieth Century,
Mr. Zuger served as an investment manager in the Trust Department of NBD Bancorp
in Detroit, Michigan.

     The activities of Investors Research are subject only to directions of the
funds' board of directors. Investors Research pays all the expenses of the funds
except brokerage, taxes, interest, fees and expenses of the non-interested
person directors (including counsel fees) and extraordinary expenses.

     For the services provided to the funds, Investors Research receives an
annual fee of 0.75% of average net assets up to $1 billion and 0.65% of average
net assets in excess of $1 billion for Strategic Allocation: Conservative, 0.85%
of average net assets up to $1 billion and 0.75% of average net assets in excess
of $1 billion for Strategic Allocation: Moderate, and 0.95% of average net
assets up to $1 billion and 0.85% of average net assets in excess of $1 billion
for Strategic Allocation: Aggressive. On the first business day of each month,
each fund pays a management fee to the manager for the previous month at the
specified rate. The fee for the previous month is calculated by multiplying the
applicable fee for such fund by the aggregate average daily closing value of
each fund's net assets during the previous month 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 fees paid by the funds to Investors Research may be higher
than those paid by many investment companies. However, most if not all of such
companies also pay, in addition, certain of their own expenses, while virtually
all of the funds' expenses, except as specified above, are paid by Investors
Research.

CODE OF ETHICS

     The funds and Investors Research have adopted a Code of Ethics, which
restricts personal investing practices by employees of Investors Research and
its affiliates. Among other provisions, the Code of Ethics requires that
employees with access to information about the purchase or sale of securities in
the funds' portfolios obtain preclearance before executing personal trades. With
respect to portfolio managers and other investment personnel, the Code of Ethics
prohibits acquisition of securities in an initial public offering, as well as
profits derived from the purchase and sale of the same security within 60
calendar days. These provisions are designed to ensure that the


                                       22


interests of fund shareholders come before the interests of the people who
manage those funds.

TRANSFER AND
ADMINISTRATIVE SERVICES

     Twentieth Century Services, Inc., 4500 Main Street, Kansas City, Missouri,
64111, acts as transfer, administrative services and dividend paying agent for
Twentieth Century. It provides facilities, equipment and personnel to Twentieth
Century and is paid for such services by Investors Research.

     From time to time, special services may be offered to shareholders who
maintain higher share balances in the Twentieth Century 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 Investors Research.

     Investors Research and Twentieth Century Services, Inc., are both wholly
owned by Twentieth Century Companies, Inc. James E. Stowers Jr., chairman of the
board of directors of the funds, controls Twentieth Century Companies by virtue
of his ownership of a majority of its common stock.

DISTRIBUTION OF FUND SHARES

     The funds' shares are distributed by Twentieth Century Securities, Inc.
(the "Distributor"), a registered broker dealer and an affiliate of the
investment manager. 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 financial services. The Distributor pays all expenses incurred in
promoting sales of, and distributing, the Advisor Class and in securing such
services.

SERVICE AND DISTRIBUTION FEES

     Rule 12b-1 adopted by the Securities and Exchange Commission ("SEC") under
the 1940 Act permits investment companies that adopt a written plan to pay
certain expenses associated with the distribution of their shares. Pursuant to
that rule, the funds' Board of Directors and the initial shareholder of the
funds' Advisor Class shares have approved and entered into a Master Distribution
and Shareholder Services Plan (the "Plan") with the Distributor. Pursuant to the
Plan, each fund pays a shareholder services fee and a distribution fee, each
equal to .25% (for a total of .50%) per annum of the average daily net assets of
the shares of the fund's Advisor Class. The shareholder services fee is paid for
the purpose of paying the costs of securing certain shareholder and
administrative services, and the distribution fee is paid for the purpose of
paying the costs of providing various distribution services. All or a portion of
such fees are paid by the Distributor to the banks, broker-dealers, insurance
companies or other financial intermediaries through which such shares are made
available.

     The Plan has been adopted and will be administered in accordance with the
requirements of Rule 12b-1 under the 1940 Act. For additional information about
the Plan and its terms, see "Master Distribution and Shareholder Services Plan"
in the Statement of Additional Information. Fees paid pursuant to the Plan may
be paid for shareholder services and the maintenance of accounts and therefore
may constitute "service fees" for purposes of applicable rules of the National
Association of Securities Dealers.

FURTHER INFORMATION
ABOUT TWENTIETH CENTURY

     Twentieth Century Strategic Asset Allocations, Inc. was organized as a
Maryland corporation on April 4, 1994.


                                       23


     The corporation is a diversified, open-end management investment company
whose shares were first offered for sale February 15, 1996. Its business and
affairs are managed by its officers under the direction of its board of
directors.

     The principal office of Twentieth Century is Twentieth Century Tower, 4500
Main Street, P.O. Box 419385, Kansas City, Missouri, 64141-6385. All inquiries
may be made by mail to that address, or by phone to 1-800-345-3533.
(For international callers: 816-531-5575.)

     Twentieth Century Strategic Asset Allocations, Inc. issues three series of
$0.01 par value shares, Strategic Allocation: Conservative, Strategic
Allocation: Moderate and Strategic Allocation: Aggressive. The assets belonging
to each series of shares are held separately by the custodian.

     Each of the funds described in this Prospectus offers three classes of
shares: an Investor Class, a Service Class, and an Advisor Class.  The shares
offered by this Prospectus are Advisor Class shares.

     The Investor Class is primarily made available to retail investors. The
Service Class is primarily offered to institutional investors or through
institutional distribution channels, such as employer-sponsored retirement plans
or through banks, broker-dealers, insurance companies or other financial
intermediaries. The other classes have different fees, expenses, and/or minimum
investment requirements than the Advisor Class. Different fees and expenses will
affect performance. For additional information concerning the Investor Class of
shares, call one of our Investor Services Representatives at 1-800-345-2021. For
information concerning the Service Class of shares, call one of our
Institutional Service Representatives 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, and (d) each class
may have different exchange privileges.

     Each share, irrespective of series or class, is entitled to one vote for
each dollar of net asset value applicable to such share on all questions, except
for those matters that must be voted on separately by the series or class of
shares affected. Matters affecting only one series or class are voted upon only
by that series or class.

     Shares have non-cumulative voting rights, which means that the holders of
more than 50% of the shares voting for the election of directors can elect all
of the directors if they choose to do so, and in such event the holders of the
remaining shares will not be able to elect any person or persons to the board of
directors.

     Unless required by the Investment Company Act, it will not be necessary for
the funds to hold annual meetings of shareholders. As a result, shareholders may
not vote each year on the election of directors or the appointment of auditors.
However, pursuant to the funds' bylaws, the holders of at least 10% of the votes
entitled to be cast may request the funds to hold a special meeting of
shareholders. We will assist in the communication with other shareholders.

     WE RESERVE THE RIGHT TO CHANGE ANY OF OUR POLICIES, PRACTICES AND
PROCEDURES DESCRIBED IN THIS PROSPECTUS, INCLUDING THE STATEMENT OF ADDITIONAL
INFORMATION, WITHOUT SHAREHOLDER APPROVAL EXCEPT IN THOSE INSTANCES WHERE
SHAREHOLDER APPROVAL IS EXPRESSLY REQUIRED.


                                       24


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                                                         TWENTIETH CENTURY
                                                       Asset Allocation Funds

                                                      Advisor Class Prospectus

                                                         September 3, 1996


TWENTIETH CENTURY MUTUAL FUNDS
and THE BENHAM GROUP
- ------------------------------------------

P.O. Box 419385
Kansas City, Missouri
64141-6385
- ------------------------------------------
Person-to-person assistance:
1-800-345-3533 or 816-531-5575
- ------------------------------------------
Automated Information Line:
1-800-345-8765
- ------------------------------------------
Telecommunications Device for the Deaf:
1-800-345-1833 or 816-753-0700
Fax: 816-340-4655
- ------------------------------------------
Internet: http://www.twentieth-century.com
- ------------------------------------------
                                                   TWENTIETH CENTURY 
                                                    STRATEGIC ASSET 
                                                      ALLOCATIONS
- --------------------------------------------------------------------------------
SH-BKT-5421    [recycled logo]
9608              Recycled


<PAGE>
                               TWENTIETH CENTURY
                             ASSET ALLOCATION FUNDS

                           INVESTOR CLASS PROSPECTUS
                                  SEPTEMBER 3,
                                      1996

                 TWENTIETH CENTURY STRATEGIC ASSET ALLOCATIONS
- --------------------------------------------------------------------------------

TWENTIETH CENTURY

     Twentieth Century Strategic Asset Allocations, Inc., a member of the
Twentieth Century family of funds, is an open-end diversified management
investment company. Three series of shares, or "funds," are described in this
Prospectus, Strategic Allocation: Conservative, Strategic Allocation: Moderate
and Strategic Allocation: Aggressive.

     The investment objective of each fund is to provide as high a level of
total return (capital appreciation plus dividend and interest income) as is
consistent with its risk profile. Each fund seeks to achieve its investment
objective by diversifying investments among three asset classes -- equity
securities, bonds and cash equivalent instruments, the mix of which will depend
on the risk profile of the particular fund. The funds are designed for investors
with investment time horizons of at least five years who want to diversify their
investments among these various asset classes through a single investment
vehicle. There is no assurance that the funds will achieve their investment
objectives. See "Investment Policies of the Funds," page 5.

     Through its Investor Class of shares, Twentieth Century offers investors a
full line of no-load mutual funds that have no sales charges or commissions.

     This Prospectus gives you information about the funds that you should know
before investing. You should read this Prospectus carefully and retain it for
future reference. Additional information is included in the Statement of
Additional Information dated September 3, 1996, and filed with the Securities
and Exchange Commission. It is incorporated in this Prospectus by reference.
To obtain a copy without charge, call or write:

                         Twentieth Century Mutual Funds
                       4500 Main Street o P.O. Box 419200
                  Kansas City, MO 64141-6200 o 1-800-345-2021
                       International calls: 816-531-5575
                    Telecommunications Device for the Deaf:
                   1-800-634-4113 o In Missouri: 816-753-1865
                   Internet: http://www.twentieth-century.com

- --------------------------------------------------------------------------------
THESE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE SECURITIES AND
EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION, NOR HAS THE SECURITIES
AND EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION PASSED UPON THE
ACCURACY OR ADEQUACY OF THIS PROSPECTUS. ANY REPRESENTATION TO THE CONTRARY IS A
CRIMINAL OFFENSE.
<PAGE>


                               TABLE OF CONTENTS
- --------------------------------------------------------------------------------

  TRANSACTION AND OPERATING EXPENSE TABLE...............................3
  FINANCIAL HIGHLIGHTS..................................................4
  
                        INFORMATION REGARDING THE FUNDS
   
  INVESTMENT POLICIES OF THE FUNDS......................................5
    Investment Objectives...............................................5
    The Funds...........................................................5
    Investment Strategy and                                                
      Asset Diversification.............................................5
    Investment Approach and Practices...................................6
    General Portfolio Management........................................8
  OTHER INVESTMENT PRACTICES, THEIR                                      
    CHARACTERISTICS AND RISKS...........................................8
    Equity Securities...................................................8
    Foreign Securities..................................................9
    Mortgage-Related and Other                                             
      Asset-Backed Securities..........................................10
    Forward Currency Exchange Contracts                                    
      and Options Thereon..............................................11
    Portfolio Turnover.................................................12
    Repurchase Agreements..............................................12
    Futures Contracts..................................................12
    Derivative Securities..............................................13
    When-Issued Securities.............................................14
    Short Sales........................................................14
    Rule 144A Securities...............................................14
  PERFORMANCE ADVERTISING..............................................14
  
           HOW TO INVEST WITH TWENTIETH CENTURY AND THE BENHAM GROUP

  HOW TO OPEN AN ACCOUNT...............................................16
     By Mail...........................................................16
     By Wire...........................................................16
     By Exchange.......................................................16
     In Person.........................................................17
  Subsequent Investments...............................................17
     By Mail...........................................................17
     By Telephone......................................................17
     By Wire...........................................................17
     In Person.........................................................17
  Automatic Investment Plan............................................17
  HOW TO EXCHANGE FROM ONE                                               
    ACCOUNT TO ANOTHER ................................................17
     By Mail ..........................................................17
     By Telephone......................................................18
  HOW TO REDEEM SHARES.................................................18
     By Telephone......................................................18
     By Mail ..........................................................18
     By Check-A-Month..................................................18
     Other Automatic Redemptions.......................................18
  Redemption Proceeds..................................................18
     By Check..........................................................18
     By Wire and ACH...................................................18
  Special Requirements for                                               
    Large Redemptions..................................................19
  Redemption of Shares in                                                
    Low-Balance Accounts...............................................19
  SIGNATURE GUARANTEE..................................................19
  SPECIAL SHAREHOLDER SERVICES.........................................20
     Automated Information Line........................................20
     Open Order Service................................................20
     Tax-Qualified Retirement Plans....................................20
  Important Policies Regarding                                           
    Your Investments...................................................20
  REPORTS TO SHAREHOLDERS..............................................21
  EMPLOYER-SPONSORED RETIREMENT PLANS AND                                
    INSTITUTIONAL ACCOUNTS.............................................22
  
                     ADDITIONAL INFORMATION YOU SHOULD KNOW

  SHARE PRICE..........................................................23
    When Share Price Is Determined.....................................23
    How Share Price Is Determined......................................23
    Where to Find Information                                              
      About Share Price................................................24
  DISTRIBUTIONS........................................................24
  TAXES................................................................25
    Tax-Deferred Accounts..............................................25
    Taxable Accounts...................................................25
  MANAGEMENT...........................................................26
    Investment Management..............................................26
    Code of Ethics.....................................................28
    Transfer and Administrative Services...............................28
  DISTRIBUTION OF FUND SHARES..........................................28
  FURTHER INFORMATION                                                    
    ABOUT TWENTIETH CENTURY............................................28
  

                                       2

<TABLE>
<CAPTION>
                    TRANSACTION AND OPERATING EXPENSE TABLE
- ----------------------------------------------------------------------------------------------

                                                      STRATEGIC      STRATEGIC      STRATEGIC
                                                     ALLOCATION:    ALLOCATION:    ALLOCATION:
                                                    CONSERVATIVE     MODERATE      AGGRESSIVE

<S>                                                    <C>             <C>            <C>
SHAREHOLDER TRANSACTION EXPENSES:
  Maximum Sales Load Imposed on Purchases..............none            none           none
  Maximum Sales Load Imposed on
   Reinvested Dividends................................none            none           none
  Deferred Sales Load..................................none            none           none
  Redemption Fee(1)....................................none            none           none
  Exchange Fee.........................................none            none           none

ANNUAL FUND OPERATING EXPENSES 
(as a percentage of net assets):
  Management Fees......................................1.00%(2)        1.10%(3)       1.20%(4)
  12b-1 Fees...........................................none            none           none
  Other Expenses(5)....................................0.00%           0.00%          0.00%
  Total Fund Operating Expenses........................1.00%           1.10%          1.20%

Example: You would pay the following
expenses on a $1,000 investment, assuming
a 5% annual return and redemption at the
end of each time period(6):                 1 year      $10            $11            $12
                                           3 years       32             35             38
</TABLE>

(1) Redemption proceeds sent by wire transfer are subject to a $10 processing
    fee.

(2) The fund pays an annual management fee equal to 1.00% of its first $1
    billion of average net assets and .90% of average net assets over $1 
    billion.

(3) The fund pays an annual management fee equal to 1.10% of its first $1
    billion of average net assets and 1.00% of average net assets over $1 
    billion.

(4) The fund pays an annual management fee equal to 1.20% of its first $1
    billion of average net assets and 1.10% of average net assets over $1 
    billion.

(5) Other expenses, which include the fees and expenses (including legal counsel
    fees) of those directors who are not "interested persons" as defined in the
    Investment Company Act, are expected to be approximately .00035 of 1% of 
    average net assets for the fund's first fiscal year.

(6) Assumes that the average net assets of the funds remain constant at less
    than $1 billion.

     The purpose of this table is to help you understand the various costs and
expenses that you, as a shareholder, will bear directly or indirectly in
connection with an investment in the class of shares of the Twentieth Century
funds offered by this Prospectus. The example set forth above assumes
reinvestment of all dividends and distributions and uses a 5% annual rate of
return as required by Securities and Exchange Commission regulations.

     NEITHER THE 5% RATE OF RETURN NOR THE EXPENSES SHOWN ABOVE SHOULD BE
CONSIDERED INDICATIONS OF PAST OR FUTURE RETURNS AND EXPENSES. ACTUAL RETURNS
AND EXPENSES MAY BE GREATER OR LESS THAN THOSE SHOWN.

     The shares offered by this Prospectus are Investor Class shares and have no
up-front or deferred sales charges, commissions, or 12b-1 fees. The funds offer
two other classes of shares, primarily to institutional investors, that have
different fee structures than the Investor Class, resulting in different
performance for the other classes. For additional information about the various
classes, see "Further Information About Twentieth Century," page 28.

- --------------------------------------------------------------------------------
NO PERSON IS AUTHORIZED BY THE FUNDS TO GIVE ANY INFORMATION OR MAKE ANY
REPRESENTATION OTHER THAN THOSE CONTAINED IN THIS PROSPECTUS OR IN OTHER PRINTED
OR WRITTEN MATERIAL ISSUED BY OR ON BEHALF OF THE FUNDS, AND YOU SHOULD NOT RELY
ON ANY OTHER INFORMATION OR REPRESENTATION.


                                       3


<TABLE>
<CAPTION>
- --------------------------------------------------------------------------------
FINANCIAL HIGHLIGHTS (For a Share Outstanding Throughout the Period)

     The Financial Highlights table below sets forth certain information
concerning the historic investment results of the funds. The financial data
included in the table, which is unaudited, has been derived from the financial
statements contained in the Statement of Additional Information.

                                              STRATEGIC             STRATEGIC               STRATEGIC
                                             ALLOCATION:           ALLOCATION:             ALLOCATION:
                                            CONSERVATIVE            MODERATE               AGGRESSIVE
                                        ---------------------  --------------------   --------------------
                                          February 15, 1996     February 15, 1996       February 15, 1996
                                         (Inception) through   (Inception) through     (Inception) through
                                            May 31, 1996          May 31, 1996            May 31, 1996
                                             (Unaudited)           (Unaudited)             (Unaudited)
 ---------------------------------------------------------------------------------------------------------
<S>                                              <C>                   <C>                     <C>  
NET ASSET VALUE,
BEGINNING OF PERIOD..........................    $5.00                 $5.00                   $5.00
                                                 -----                 -----                   -----
INCOME FROM
INVESTMENT OPERATIONS

   Net Investment Income(1)..................      .05                   .04                     .03

   Net Realized and
   Unrealized Gains (Losses).................     (.02)                  .12                     .20
                                                 -----                 -----                   -----
   Total from
   Investment Operations.....................      .03                   .16                     .23
                                                 -----                 -----                   -----
DISTRIBUTIONS

   From Net
   Investment Income.........................     (.02)                 (.02)                     --
                                                 -----                 -----                   -----

NET ASSET VALUE,
END OF PERIOD................................    $5.01                 $5.14                   $5.23
                                                 =====                 =====                   =====

   TOTAL RETURN(2)...........................      .64%                 3.11%                   4.60%

RATIOS/SUPPLEMENTAL DATA

   Ratio of Expenses to
   Average Net Assets(3).....................     1.05%                 1.12%                   1.22%

   Ratio of Net Investment Income
   to Average Net Assets(3)..................     3.65%                 2.74%                   1.88%

   Portfolio Turnover Rate...................       25%                   24%                     34%

   Average Commission Paid per
   Share Traded .............................   $.0206                $.0173                  $.0198

   Investment Security Traded
   Net Assets, End of Period (in thousands)..   $8,061               $14,953                 $16,370

 ---------------------------------------------------------------------------------------------------------
</TABLE>

(1) Computed using average shares outstanding throughout the period.

(2) Total returns for periods less than one year are not annualized. Total
    return assumes reinvestment of dividends and capital gain distributions, if 
    any.

(3) Annualized

                                       4


                        INFORMATION REGARDING THE FUNDS
- --------------------------------------------------------------------------------

INVESTMENT POLICIES
OF THE FUNDS

INVESTMENT OBJECTIVES

     Twentieth Century offers three asset allocation funds: Strategic
Allocation: Conservative, Strategic Allocation: Moderate and Strategic
Allocation: Aggressive.

     Each fund's investment objective is to obtain as high a level of total
return (capital appreciation plus dividend and interest income)as is consistent
with such fund's risk profile. As with all mutual funds, there can be no
assurance that the funds will achieve their investment objectives.

     You should be aware that the names of the funds are intended to reflect the
relative short-term price volatility risk among the three asset allocation funds
offered in this Prospectus and not as an indication of the manager's assessment
of the riskiness of the funds as compared to other mutual funds, including other
mutual funds within the Twentieth Century family of funds.

THE FUNDS

     The funds pursue a flexible approach that diversifies the funds' assets
among various classes and categories of assets. Each fund has its own mix, which
gives it a distinct risk profile and return potential. The three funds enable
investors to select the level of risk that is appropriate for their particular
situations and investment goals. See "Investment Strategy and Asset
Diversification," this page.

STRATEGIC ALLOCATION: CONSERVATIVE

     The asset mix of Strategic Allocation: Conservative seeks to provide
shareholders with regular income through its emphasis on bonds and money market
securities, combined with the potential for moderate long-term total return as a
result of its stake in equity securities. The fund's emphasis on bonds and money
market securities should help to provide a measure of principal protection while
the stock market is in a decline.

STRATEGIC ALLOCATION: MODERATE

     The asset mix of Strategic Allocation: Moderate emphasizes investments in
equity securities, but maintains a sizable stake in bonds and money market
securities. This asset mix seeks to provide long-term growth and some regular
income, while helping to moderate losses when the stock market declines.

STRATEGIC ALLOCATION: AGGRESSIVE

     The asset mix of Strategic Allocation: Aggressive emphasizes investments in
equity securities, but maintains a portion of its assets in bonds and money
market securities. This asset mix seeks to provide long-term growth, together
with a small amount of income to help cushion the volatility of the equity
portfolio.

INVESTMENT STRATEGY AND
ASSET DIVERSIFICATION

     The funds seek to achieve their investment objectives by pursuing a
strategic asset allocation strategy. Each fund will diversify its investments
among three major asset classes -- equity securities, bonds and cash equivalent
instruments.

     Each fund has its own neutral mix that represents a benchmark as to how
that fund's investments will be generally allocated among the major asset
classes over the long term. Each fund's neutral mix is set forth below:

                          NEUTRAL MIXES

                            EQUITY                      CASH
FUND                      SECURITIES      BONDS      EQUIVALENTS
- -----------------------------------------------------------------
Strategic Allocation:
Conservative                  40%          45%          15%
- -----------------------------------------------------------------
Strategic Allocation:
Moderate                      60%          30%          10%
- -----------------------------------------------------------------
Strategic Allocation:
Aggressive                    75%          20%           5%
- -----------------------------------------------------------------

     The mix of a fund will vary over short-term periods depending on the
relative performance of the various asset classes (for example, when one class
of assets increases or decreases in value at


                                       5


a different rate than the other classes). In addition, the manager may
temporarily emphasize or de-emphasize a class of assets based on market
conditions regarding the relative value of the asset class in the near term.
However, each fund has operating ranges that restrict the amount by which the
assets of each class may fluctuate. Those operating ranges are set forth below:

                        OPERATING RANGES

                            EQUITY                      CASH
FUND                      SECURITIES      BONDS      EQUIVALENTS
- -----------------------------------------------------------------
Strategic Allocation:
Conservative                34-46%       38-52%        10-25%
- -----------------------------------------------------------------
Strategic Allocation:
Moderate                    50-70%       20-40%         5-20%
- -----------------------------------------------------------------
Strategic Allocation:
Aggressive                  60-90%       10-30%         0-15%
- -----------------------------------------------------------------

     In addition to diversifying among asset classes, the assets in the equity
and bond classes are further diversified among investment categories (or
sectors) and styles within those classes. See "Investment Approach and
Practices," this page. The allocation of assets within a fund's operating range
and among the different investment categories within each class is designed to
provide a diversified portfolio emphasizing total return.

INVESTMENT APPROACH
AND PRACTICES

     As described above, each fund's assets are allocated among major asset
classes according to their respective asset mix and subject to the applicable
operating ranges. Each fund's assets are further diversified among various
investment categories and disciplines within the major asset classes, as
described below.

EQUITY SECURITIES

     The equity portion of a fund's portfolio may be invested in any type of
domestic or foreign equity security, primarily common stocks, that meets certain
fundamental and technical standards of selection. The manager will utilize two
distinct investment disciplines in managing the equity portion of each fund's
portfolio: (1) growth; and (2) value.

     The growth discipline seeks long-term capital appreciation by investing in
companies whose earnings and revenue trends meet the manager's standards of
selection, which generally means that the companies have demonstrated, or, in
the manager's opinion, have the prospects for demonstrating, accelerating
earnings and revenues as compared to prior periods and/or industry competitors.
The value investment discipline seeks capital growth by investing in equity
securities of well-established companies that are believed by the manager to be
temporarily undervalued.

     The manager believes that both value investing and growth investing provide
the potential for appreciation over time. Value investing tends to provide less
volatile results. This lower volatility means that the price of value stocks
tends not to fall as significantly as growth stocks do in down markets. However,
value stocks do not usually appreciate as significantly as growth stocks do in
up markets. In keeping with the diversification theme of these funds, and as a
result of management's belief that these styles are complementary, both
disciplines will be represented to some degree in each portfolio at all times.

     As noted, the value investment discipline tends to be less volatile than
the growth style. As a result, Strategic Allocation: Conservative will generally
have a higher proportion of its equity investments in value stocks than the
other two funds. Likewise, Strategic Allocation: Aggressive will generally have
a greater proportion of growth stocks than either Strategic Allocation: Moderate
or Strategic Allocation: Conservative.

     In addition, the equity portion of each fund's portfolio will be further
diversified among small, medium and large companies. This approach provides
investors with an additional level of diversification and enables investors to
achieve a broader exposure to the various capitalization ranges without having
to invest in multiple funds.


                                       6


     Although the funds will remain exposed to each of the investment
disciplines and categories described above, a particular discipline or
investment category may be emphasized when, in the manager's opinion, such
discipline or investment category is undervalued relative to the other
disciplines or categories. See "Other Investment Practices, Their
Characteristics and Risks," page 8.

BONDS

     The fixed income portion of a fund's portfolio will include U.S. Treasury
securities, securities issued or guaranteed by the U.S. government or a foreign
government, or an agency or instrumentality of the U.S. or a foreign government,
and non-convertible debt obligations issued by U.S. or foreign corporations. The
funds may also invest in mortgage-related and other asset-backed securities as
described under "Mortgage-Related and Other Asset Backed Securities," page 10.
As with the equity portion of a fund's portfolio, the bond portion of a fund's
portfolio will be diversified among the various types of fixed income investment
categories described above. The manager's strategy is to actively manage the
portfolio by investing the fund's assets in sectors it believes are undervalued
(relative to the other sectors) and which represent better relative long-term
investment opportunities.

     The value of fixed income securities fluctuates based on changes in
interest rates and in the credit quality of the issuer. Debt securities that
comprise part of a fund's fixed income portfolio will primarily be limited to
"investment grade" obligations. However, Strategic Allocation: Moderate may
invest up to 5% of its assets, and Strategic Allocation: Aggressive may invest
up to 10% of its assets, in "high yield" securities. "Investment grade" means
that at the time of purchase, such obligations are rated within the four highest
categories by a nationally recognized statistical rating organization [for
example, at least Baa by Moody's Investors Service, Inc. ("Moody's") or BBB by
Standard & Poor's Corporation ("S&P")], or, if not rated, are of equivalent
investment quality as determined by the investment manager. According to
Moody's, bonds rated Baa are medium-grade and possess some speculative
characteristics. A BBB rating by S&P indicates S&P's belief that a security
exhibits a satisfactory degree of safety and capacity for repayment, but is more
vulnerable to adverse economic conditions and changing circumstances.

     "High yield" securities, sometimes referred to as "junk bonds," are higher
risk, non-convertible debt obligations that are rated below investment grade
securities, or are unrated, but with similar credit quality.

     There are no credit or maturity restrictions on the fixed income securities
in which the high yield portion of a fund's portfolio may be invested. Debt
securities rated lower than Baa by Moody's or BBB by S&P or their equivalent are
considered by many to be predominantly speculative. Changes in economic
conditions or other circumstances are more likely to lead to a weakened capacity
to make principal and interest payments on such securities than is the case with
higher quality debt securities. Regardless of rating levels, all debt securities
considered for purchase by the fund are analyzed by the investment manager to
determine, to the extent reasonably possible, that the planned investment is
sound, given the investment objective of the fund. See "An Explanation of Fixed
Income Securities Ratings" in the Statement of Additional Information.

     Under normal market conditions, the maturities of fixed-income securities
in which the funds invest will range from 2 to 30 years.

CASH EQUIVALENTS

     The cash equivalent portion of a fund's portfolio may be invested in
high-quality money market instruments (denominated in U.S. dollars or foreign
currencies), including U.S. government obligations, obligations of domestic and
foreign banks, short-term corporate debt instruments and repurchase agreements.


                                       7


GENERAL PORTFOLIO MANAGEMENT

     Within each asset class, each fund's holdings will be invested across
industry groups and issuers that meet its investment criteria. This diversity of
investment is intended to help reduce the risk created by over-concentration in
a particular industry or issuer.

     The funds are "strategic" rather than "tactical" allocation funds, which
means that the manager does not try to time the market to identify the exact
time when a major reallocation should be made. Instead, the manager utilizes a
longer-term approach in pursuing the funds' investment objectives, and thus
selects a blend of investments in the various asset classes.

     The manager regularly reviews each fund's investments and allocations and
may make changes in the particular securities within each asset class or to a
fund's asset mix (within the defined operating ranges) to favor investments that
it believes will provide the most favorable outlook for achieving a fund's
objective. Recommended reallocations may be implemented promptly or may be
implemented gradually. In order to minimize the impact of reallocations on a
fund's performance, the manager will generally attempt to reallocate assets
gradually.

     In determining the allocation of assets among U.S. and foreign capital
markets, the manager considers the condition and growth potential of the various
economies; the relative valuations of the markets; and social, political, and
economic factors that may affect the markets.

     In selecting securities in foreign currencies, the manager considers, among
other factors, the impact of foreign exchange rates relative to the U.S. dollar
value of such securities. The manager may seek to hedge all or a part of a
fund's foreign currency exposure through the use of forward foreign currency
contracts or options thereon. See "Forward Currency Exchange Contracts and
Options Thereon," page 11.

     The funds attempt to diversify across asset classes and investment
categories to a greater extent than mutual funds that invest primarily in equity
securities or primarily in fixed income securities. However, the funds are
designed to fit three general risk profiles and may not provide an appropriately
balanced investment plan for all investors.

     The funds' investment objectives, as identified on the front cover of this
Prospectus, and any other investment policies designated as "fundamental" in
this Prospectus or in the Statement of Additional Information, cannot be changed
without the approval of the shareholders entitled to cast a majority of the
outstanding votes of the corporation, as defined by the Investment Company Act.
Unless otherwise noted, all other investment policies and practices are
nonfundamental and may be changed without shareholder approval.

OTHER INVESTMENT PRACTICES,
THEIR CHARACTERISTICS AND RISKS

     For additional information, see "Investment Restrictions" in the Statement
of Additional Information.

EQUITY SECURITIES

     In addition to investing in common stocks, the funds may invest in other
equity securities and equity equivalents. Other equity securities and equity
equivalents include securities that permit the fund to receive an equity
interest in an issuer, the opportunity to acquire an equity interest in an
issuer, or the opportunity to receive a return on its investment that permits
the fund to benefit from the growth over time in the equity of an issuer.
Examples of equity securities and equity equivalents include preferred stock,
convertible preferred stock and convertible debt securities.

     Each fund will limit its purchase of convertible debt securities to those
that, at the time of purchase, are rated at least B- by S&P or B3 by Moody's, or
if not rated by S&P or Moody's are of equivalent investment quality as
determined

                                       8


by the manager. A fund's investments in convertible debt securities and other
high yield, non-convertible debt securities rated below investment grade will
comprise less than 35% of the fund's net assets. Debt securities rated below the
four highest categories are not considered "investment grade" obligations. These
securities have speculative characteristics and present more credit risk than
investment grade obligations. For a description of the S&P and Moody's ratings
categories, see "An Explanation of Fixed Income Securities Ratings," in the
Statement of Additional Information. Equity equivalents may also include
securities whose value or return is derived from the value or return of a
different security. Depositary receipts are an example of the type of equity
equivalent security in which the funds might invest.

FOREIGN SECURITIES

     Each fund may invest in the securities of foreign issuers, including debt
securities of foreign governments and their agencies, when these securities meet
its standards of selection. The manager defines "foreign issuer" as an issuer of
securities that is domiciled outside the United States, derives at least 50% of
its total revenue from production or sales outside the United States, and/or
whose principal trading market is outside the United States.

     Strategic Allocation: Conservative will generally invest between 7 and 17%
of its assets in foreign securities; Strategic Allocation: Moderate will
generally invest between 10 and 30% of its assets in foreign securities; and
Strategic Allocation: Aggressive will generally invest between 15 and 35% of its
assets in foreign securities. With regard to foreign investments by Strategic
Allocation: Conservative, the principal activities of such issuers will be
located in developed countries. With regard to Strategic Allocation: Aggressive
and Strategic Allocation: Moderate, the principal activities of such issuers may
be located in either developed or developing countries, but the majority of the
activities will be in developed countries.

     The funds may make such investments either directly in foreign securities
or indirectly by purchasing depositary receipts or depositary shares of similar
instruments ("depositary receipts") for foreign securities. Depositary receipts
are securities that are listed on exchanges or quoted in the domestic
over-the-counter markets in one country but represent shares of issuers
domiciled in another country. Direct investments in foreign securities may be
made either on foreign securities exchanges or in the over-the-counter markets.

     Subject to its investment objective and policies, each fund may invest in
common stocks, convertible securities, preferred stocks, bonds, notes and other
debt securities of foreign issuers and debt securities of foreign governments
and their agencies. The credit quality standards applicable to domestic
securities purchased by each fund are also applicable to its foreign securities
investments.

     Investments in foreign securities may present certain risks, including
those resulting from fluctuations in currency exchange rates, future political
and economic developments, 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.

     Strategic Allocation: Moderate and Strategic Allocation: Aggressive may
invest a portion of their international holdings in securities of issuers in
emerging market (developing) countries. Investing in emerging market countries
involves significantly higher risk than investing in countries with developed
markets as a result of uncertainty regarding the companies and the markets in
which they operate. Securities prices can be more volatile than in developed
countries as a result of investor concerns regarding the stability of the
government, internal economic pressures, and the impact of external economic


                                       9


factors. In addition, securities markets in emerging market countries may trade
a small number of securities and may be unable to respond effectively to
increases in trading volume, potentially resulting in a lack of liquidity and in
volatility in the price of securities traded on those markets. Also, securities
markets in emerging market countries typically offer less regulatory protection
for investors. See "Investing in Emerging Market Countries," in the Statement of
Additional Information.

MORTGAGE-RELATED AND OTHER ASSET-BACKED SECURITIES

     The funds may purchase mortgage-related and other asset-backed securities.
Mortgage pass-through securities are securities representing interests in
"pools" of mortgages in which payments of both interest and principal on the
securities are generally made monthly, in effect "passing through" monthly
payments made by the individual borrowers on the residential mortgage loans that
underlie the securities (net of fees paid to the issuer or guarantor of the
securities).

     Early repayment of principal on mortgage pass-through securities (arising
from prepayments of principal due to sale of the underlying property,
refinancing, or foreclosure, net of fees and costs which may be incurred) may
expose the funds to a lower rate of return upon reinvestment of principal. Also,
if a security subject to prepayment were purchased at a premium, in the event of
prepayment, the value of the premium would be lost. Like other fixed-income
securities, when interest rates rise, the value of a mortgage-related security
generally will decline; however, when interest rates decline, the value of
mortgage-related securities with prepayment features may not increase as much as
other fixed-income securities.

     Payment of principal and interest on some mortgage pass-through securities
(but not the market value of the securities themselves) may be guaranteed by the
full faith and credit of the U.S. government in the case of securities
guaranteed by the Government National Mortgage Association (GNMA), or guaranteed
by agencies or instrumentalities of the U.S. government in the case of
securities guaranteed by the Federal National Mortgage Association (FNMA) or the
Federal Home Loan Mortgage Corporation (FHLMC), which are supported only by the
discretionary authority of the U.S. government to purchase the agency's
obligations.

     Mortgage pass-through securities created by nongovernmental issuers (such
as commercial banks, savings and loan institutions, private mortgage insurance
companies, mortgage bankers and other secondary market issuers) may be supported
by various forms of insurance or guarantees, including individual loan, title,
pool and hazard insurance and letters of credit, which may be issued by
governmental entities, private insurers, or the mortgage poolers.

     The funds may also invest in collateralized mortgage obligations (CMOs).
CMOs are mortgage-backed securities issued by government agencies;
single-purpose, stand-alone financial subsidiaries; trusts established by
financial institutions; or similar institutions. The funds may buy CMOs that
meet the following criteria:

   o Are collateralized by pools of mortgages in which payment of principal and
     interest of each mortgage is guaranteed by an agency or instrumentality of
     the U.S. government;

   o Are collateralized by pools of mortgages in which payment of principal and
     interest are guaranteed by the issuer, and the guarantee is collateralized
     by U.S. government securities;

   o Are securities in which the proceeds of the issue are invested in mortgage
     securities and payments of principal and interest are supported by the
     credit of an agency or instrumentality of the U.S. government.


                                       10


FORWARD CURRENCY EXCHANGE CONTRACTS AND OPTIONS THEREON

     Some of the securities held by the funds may be denominated in foreign
currencies. Other securities, such as depositary receipts, may be denominated in
U.S. dollars but have a value that is dependent on the performance of a foreign
security, as valued in the currency of its home country. As a result, the value
of a fund's portfolio may be affected by changes in the exchange rate between
foreign currencies and the U.S. dollar, as well as by changes in the market
value of the securities themselves. The performance of foreign currencies
relative to the dollar may be a factor in a fund's overall performance.

     To protect against adverse movements in exchange rates between currencies,
the funds may, for hedging purposes only, enter into forward currency exchange
contracts and buy put and call options relating to interest rate futures
contracts. A forward currency exchange contract obligates the fund to purchase
or sell a specific currency at a future date at a specific price. An option is a
contractual right to acquire a financial asset, such as a security, the
securities of a market index, a foreign currency or a foreign currency exchange
contract, at a specific price at the end of a specified term.

     Each fund may elect to enter into a forward currency exchange contract or
an option thereon with respect to a specific purchase or sale of a security, or
with respect to the fund's portfolio positions generally.

     By entering into a forward currency exchange contract or an option thereon
with respect to the specific purchase or sale of a security denominated in a
foreign currency, the funds can "lock in" an exchange rate between the trade and
settlement dates for that purchase or sale. This practice is sometimes referred
to as "transaction hedging." Each fund may enter into transaction hedging
contracts with respect to all or a substantial portion of its foreign securities
trades.

     When the manager believes that a particular currency may decline in value
compared to the dollar, the funds may enter into forward currency exchange
contracts or options thereon to sell an amount of foreign currency equal to the
value of some or all of a fund's portfolio securities either denominated in, or
whose value is tied to, that currency. This practice is sometimes referred to as
"portfolio hedging." A fund may not enter into a portfolio hedging transaction
where the fund would be obligated to deliver an amount of foreign currency in
excess of the aggregate value of the fund's portfolio securities or other assets
denominated in, or whose value is tied to, that currency.

     The funds will make use of portfolio hedging to the extent deemed
appropriate by the manager. However, it is anticipated that the funds will enter
into portfolio hedges much less frequently than transaction hedges.

     If a fund enters into a forward currency exchange contract or an option
thereon, the fund, when required, will instruct its custodian bank to segregate
cash or liquid high-grade securities in a separate account in an amount
sufficient to cover its obligation under the contract. For options sold, a fund
will segregate cash or liquid high-grade securities equal to the value of the
securities underlying the options unless the options are otherwise secured.
Those assets will be valued at market daily, and if the value of the segregated
securities declines, additional cash or securities will be added so that the
value of the account is not less than the amount of the fund's commitment. At
any given time, no more than 10% of a fund's assets will be committed to a
segregated account in connection with portfolio hedging transactions.

     Predicting the relative future values of currencies is very difficult, and
there is no assurance that any attempt to protect the funds against adverse
currency movements through the use of forward currency exchange contracts will
be successful. In addition, the use of forward currency exchange contracts tends
to limit the

                                       11


potential gains that might result from a positive change in the relationship
between the foreign currency and the U.S. dollar.

PORTFOLIO TURNOVER

     The portfolio turnover rates of the funds are shown in the Financial
Highlights table on page 4 of this Prospectus.

     Investment decisions to purchase and sell securities are based on the
anticipated contribution of the security in question to a 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 and, accordingly, the
annual portfolio turnover rate cannot be accurately predicted.

     The portfolio turnover of the funds may be higher than other investment
companies with similar investment objectives. Higher turnover would generate
correspondingly greater brokerage commissions, which is a cost that the funds
pay directly. Portfolio turnover may also affect the character of capital gains,
if any, realized and distributed by a fund since short-term capital gains are
taxable as ordinary income.

     The manager estimates, pursuant to SEC requirements, that the rate of
portfolio turnover will, generally, not exceed 150% per year.

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 fund's investment policies.

     A repurchase agreement occurs when a fund purchases an interest-bearing
obligation from a bank or broker-dealer registered under the Securities Exchange
Act of 1934 and simultaneously agrees to sell it back on a specified date in the
future (usually less than one week later) at a higher price. The repurchase
price reflects an agreed-upon interest rate during the time the fund's money is
invested in the security and is considered by the staff of the SEC to be a loan
by the fund.

     A fund's risk in connection with repurchase agreements is the ability of
the seller to pay the repurchase price on the repurchase date. If the seller
defaults, the fund may incur costs, delays or losses. Management monitors the
creditworthiness of sellers.

     The funds will enter into repurchase agreements only with those commercial
banks and broker-dealers whose creditworthiness has been reviewed and found
satisfactory by the funds' management pursuant to criteria adopted by the funds'
board of directors.

FUTURES CONTRACTS

     Each fund may enter into domestic and foreign futures contracts. A futures
contract is an agreement to take or make delivery of a financial asset at a
specific price at the end of the contract period. Some futures contracts, such
as market index futures, require settlement in cash based on the difference
between the value of the underlying financial assets at the beginning and at the
end of the contract period. Rather than actually purchasing the specific
financial assets, or the securities of a market index, the manager may purchase
a futures contract, which reflects the value of such underlying securities. For
example, S&P 500 futures reflect the value of the underlying companies that
comprise the S&P 500 Composite Stock Price Index. If the aggregate market value
of the underlying index securities increases or decreases during the contract
period, the value of the S&P 500 futures can be expected to reflect such
increase or decrease. The manager may use index futures to efficiently expose to
the equity markets a portion of a fund's assets that is being held for future
investment opportunities.

     When a fund enters into a futures contract, it must make a deposit of cash
or high-quality debt securities, known as "initial margin," as partial security
for its performance under the contract. As the value of the underlying financial
assets

                                       12


fluctuates, either party to the contract is required to make additional margin
payments, known as "variation margin," to cover any additional obligation it may
have under the contract. Assets set aside by a fund as initial or variable
margin may not be disposed of so long as the fund maintains the contract.

     The funds may not purchase leveraged futures. A fund will deposit in a
segregated account with its custodian bank cash or high-quality debt securities
in an amount equal to the fluctuating market value of the index contracts it has
purchased, less any margin deposited on its position. The funds will only invest
in exchange-traded futures.

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 or S&P 500 futures), 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 S&P 500 Index would
be a permissible investment since each of the funds may invest in the securities
of companies comprising the S&P 500 Index (assuming they otherwise meet the
other requirements for the fund), while 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 of 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:

   o the risk that the underlying security, interest rate, market index or other
     financial asset will not move in the direction the portfolio manager
     anticipates;

   o 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;

   o the risk that adverse price movements in an instrument can result in a loss
     substantially greater than a fund's initial investment; and

   o 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


                                       13


necessary. In addition, the board will review the manager's policy for
investments in derivative securities annually.

WHEN-ISSUED SECURITIES

     Each fund may purchase new issues of securities on a when-issued basis
without limit when, in the opinion of the manager, such purchases will further
the investment objectives of such fund. The price of when-issued securities is
established at the time the commitment to purchase is made. Delivery of and
payment for these securities typically occur 15 to 45 days after the commitment
to purchase. 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. A separate account consisting of cash or
high-quality liquid debt securities in an amount at least equal to the
when-issued commitments will be established and maintained with the custodian.
No income will accrue to the fund prior to delivery.

SHORT SALES

     Each fund may engage in short sales if, at the time of the short sale, the
fund owns or has the right to acquire an equal amount of the security being sold
short at no additional cost. These transactions allow a fund to hedge against
price fluctuations by locking in a sale price for securities it does not wish to
sell immediately.

     A fund may make a short sale 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 and for purposes of satisfying certain tests
applicable to regulated investment companies under the Internal Revenue Code and
Regulations.

RULE 144A SECURITIES

     The funds may, from time to time, purchase 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 buyers 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 Securities and Exchange Commission 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 manager.
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 security
that is illiquid. In such an event, the funds' manager will consider appropriate
remedies to minimize the effect on such fund's liquidity. No fund may invest
more than 15% of its assets in illiquid securities (securities that may not be
sold within seven days at approximately the price used in determining the net
asset value of fund shares).

PERFORMANCE ADVERTISING

     From time to time, the funds may advertise performance data. Fund
performance may be shown by presenting one or more performance measurements,
including cumulative total return or average annual total return. Performance
data

                                       14


may be quoted separately for the Investor Class and the other classes offered by
the funds.

     Cumulative total return data is computed by considering all elements of
return, including reinvestment of dividends and capital gains distributions,
over a stated period of time. Average annual total return is determined by
computing the annual compound return over a stated period of time that would
have produced the fund's cumulative total return over the same period if the
fund's performance had remained constant throughout.

     A quotation of yield reflects a fund's income over a stated period of time,
expressed as a percentage of the fund's share price.

     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.

     Yields are calculated according to accounting methods that are standardized
in accordance with SEC rules for all stock and bond funds. Because yield
accounting methods differ from the methods used for other accounting purposes, a
fund's yield may not equal the income paid on your shares or the income reported
in the fund's financial statements.

     Each fund also may include in advertisements data comparing performance
with the performance of non-related investment media, published editorial
comments and performance rankings compiled by independent organizations (such as
Lipper Analytical Services) and publications that monitor the performance of
mutual funds. Performance information may be quoted numerically or may be
presented in a table, graph or other illustration. In addition, fund performance
may be compared to well-known indices of market performance including the
Standard & Poor's (S&P) 500 Index and the Dow Jones Industrial Average. A fund's
performance may also be compared, on a relative basis, to the other funds in our
fund family. This relative comparison, which may be based upon historical or
expected fund performance, volatility or other fund characteristics, may be
presented numerically, graphically or in text. The performance of a fund may
also be combined or blended with other funds in our fund family, and that
combined or blended performance may be compared to the same indices to which
individual funds may be compared.

     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.


                                       15


           HOW TO INVEST WITH TWENTIETH CENTURY AND THE BENHAM GROUP
- --------------------------------------------------------------------------------

     The following section explains how to invest with Twentieth Century Mutual
Funds and The Benham Group, including purchases, redemptions, exchanges and
special services. You will find more detail about doing business with us by
referring to the Investor Services Guide that you will receive when you open an
account.

     If you own or are considering purchasing fund shares through an
employer-sponsored retirement plan or through a bank, broker-dealer or other
financial intermediary, the following sections, as well as the information
contained in our Investor Services Guide, may not apply to you. Please read
"Employer-Sponsored Retirement Plans and Institutional Accounts," page 22.

HOW TO OPEN AN ACCOUNT

     To open an account, you must complete and sign an application, furnishing
your taxpayer identification number. (You must also certify whether you are
subject to withholding for failing to report income to the IRS.) Investments
received without a certified taxpayer identification number will be returned.

     The minimum investment is $2,500 [$1,000 for IRA and Uniform
Gifts/Transfers to Minors Acts ("UGMA/UTMA") accounts]. These minimums will be
waived if you establish an automatic investment plan to your account that is the
equivalent of at least $50 per month. See "Automatic Investment Plan," page 17.

     The minimum investment requirements may be different for some types of
retirement accounts. Call one of our Investor Services representatives for
information on our retirement plans, which are available for individual
investors or for those investing through their employers.

     Please note: If you register your account as belonging to multiple owners
(e.g., as joint tenants), you must provide us with specific authorization on
your application in order for us to accept written or telephone instructions
from a single owner. Otherwise, all owners will have to agree to any
transactions that involve the account (whether the transaction request is in
writing or over the telephone).

     You may invest in the following ways:

BY MAIL

     Send a completed application and check or money order payable in U.S.
dollars to Twentieth Century Mutual Funds.

BY WIRE

     You may make your initial investment by wiring funds. To do so, call us or
mail a completed application and provide your bank with the following
information:

     RECEIVING BANK AND ROUTING NUMBER:
     Commerce Bank, N.A. (101000019)

     BENEFICIARY (BNF):
     Twentieth Century Services, Inc.
     4500 Main St., Kansas City, MO 64141-6200

     BENEFICIARY ACCOUNT NUMBER (BNF ACCT):
     2804918

     REFERENCE FOR BENEFICIARY (RFB):
     Twentieth Century account number into which you are investing. If more than
     one, leave blank and see Bank to Bank Information below.

     ORIGINATOR TO BENEFICIARY (OBI):
     Name and address of owner of account into which you are investing.

     BANK TO BANK INFORMATION
     (BBI OR FREE FORM TEXT):

     o Taxpayer identification or social security number.
     o If more than one account, account numbers and amount to be invested in
       each account.
     o Current tax year, previous tax year or rollover designation if an IRA.
       Specify whether IRA, SEP-IRA or SARSEP-IRA.

BY EXCHANGE

     Call 1-800-345-2021 from 7 a.m. to 7 p.m. Central time to get information
on opening an account by exchanging from another Twentieth Century or Benham
account. See page 17 for more information on exchanges.


                                       16


IN PERSON

     If you prefer to work with a representative in person, please visit one of
our Investors Centers, located at:

     4500 Main Street
     Kansas City, MO 64111

     1665 Charleston Road
     Mountain View, CA 94043

     2000 S. Colorado Blvd.
     Denver, CO 80222

SUBSEQUENT INVESTMENTS

     Subsequent investments may be made by an automatic bank, payroll or
government direct deposit (see "Automatic Investment Plan," this page) or by any
of the methods below. The minimum investment requirement for subsequent
investments: $250 for checks submitted without the remittance portion of a
previous statement or confirmation, $50 for all other types of subsequent
investments.

BY MAIL

     When making subsequent investments, enclose your check with the remittance
portion of the confirmation of a previous investment. If the remittance slip is
not available, indicate your name, address and account number on your check or a
separate piece of paper. (Please be aware that the investment minimum for
subsequent purchases is higher without a remit slip.)

BY TELEPHONE

     Once your account is open, you may make investments by telephone if you
have authorized us (by choosing "Full Services" on your application) to draw on
your bank account. You may call an Investor Services Representative or use our
Automated Information Line.

BY WIRE

     You may make subsequent investments by wire. Follow the wire transfer
instructions on page 16 and indicate your account number.

IN PERSON

     You may make subsequent investments in person at one of our Investors
Centers. The locations of our three Investors Centers are listed on this page.

AUTOMATIC INVESTMENT PLAN

     You may elect on your application to make investments automatically by
authorizing us to draw on your bank account regularly. Such investments must be
at least the equivalent of $50 per month. You also may choose an automatic
payroll or government direct deposit. If you are establishing a new account,
check the appropriate box under "Automatic Investments" on your application to
receive more information. If you would like to add a direct deposit to an
existing account, please call one of our Investor Services Representatives.

HOW TO EXCHANGE FROM
ONE ACCOUNT TO ANOTHER

     As long as you meet any minimum initial investment requirements, you may
exchange your fund shares to our other funds up to six times per year per
account. For any single exchange, the shares of each fund being acquired must
have a value of at least $100. However, we will allow investors to set up an
Automatic Exchange Plan between any two funds in the amount of at least $50 per
month. See our Investor Services Guide for further information about exchanges.

     If, in any 90-day period, the total of your exchanges and your redemptions
from any one account exceeds the lesser of $250,000 or 1% or the fund's assets,
further exchanges will be subject to special requirements to comply with our
policy on large redemptions. See "Special Requirements for Large Redemptions,"
page 19.

BY MAIL

     You may direct us in writing to exchange your shares from one Twentieth
Century or Benham account to another. For additional information, please see our
Investor Services Guide.

                                       17


BY TELEPHONE

     You can make exchanges over the phone (either with an Investor Services
Representative or using our Automated Information Line -- see page 20) if you
have authorized us to accept telephone instructions. You can authorize this by
selecting "Full Services" on your application or by calling us at 1-800-345-2021
to get the appropriate form.

HOW TO REDEEM SHARES

     We will redeem or "buy back" your shares at any time. Redemptions will be
made at the next net asset value determined after a complete redemption request
is received. For large redemptions, please read "Special Requirements for Large
Redemptions," page 19.

     Please note that a request to redeem shares in an IRA or 403(b) plan must
be accompanied by an executed IRS Form W4-P and a reason for withdrawal as
specified by the IRS.

BY TELEPHONE

     If you have authorized us to accept telephone instructions, you may redeem
your shares by calling an Investor Services Representative.

BY MAIL

     Your written instructions to redeem shares may be made either by a
redemption form, which we will send you upon request, or by a letter to us.
Certain redemptions may require a signature guarantee. Please see "Signature
Guarantee," page 19.

BY CHECK-A-MONTH

     If you have at least a $10,000 balance in your account, you may redeem
shares by Check-A-Month. A Check-A-Month plan automatically redeems enough
shares each month to provide you with redemption proceeds in an amount you
choose (minimum $50). To set up a Check-A-Month plan, please call and request
our Check-A-Month brochure.

OTHER AUTOMATIC REDEMPTIONS

     You may elect to make redemptions automatically by authorizing us to send
funds to you or to your account at a bank or other financial institution. To set
up automatic redemptions, call one of our Investor Services Representatives.

REDEMPTION PROCEEDS

     Please note that shortly after a purchase of shares is made by check or
electronic draft (also known as an ACH draft) from your bank, we may wait up to
15 days or longer to send redemption proceeds (to allow your purchase funds to
clear). No interest is paid on the redemption proceeds after the redemption is
processed but before your redemption proceeds are sent.

     Redemption proceeds may be sent to you in one of the following ways:

BY CHECK

     Ordinarily, all redemption checks will be made payable to the registered
owner of the shares and will be mailed only to the address of record. For more
information, please refer to our Investor Services Guide.

BY WIRE AND ACH

     You may authorize us to transmit redemption proceeds by wire or ACH. These
services will be effective 15 days after we receive the authorization.

     Your bank will usually receive wired funds within 48 hours of transmission.
Funds transferred by ACH may be received up to seven days after transmission.
Wired funds are subject to a $10 fee to cover bank wire charges, which is
deducted from redemption proceeds. Once the funds are transmitted, the time of
receipt and the funds' availability are not under our control.


                                       18


SPECIAL REQUIREMENTS FOR LARGE REDEMPTIONS

     We 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 to pay redemptions in cash applies to situations where one
shareholder redeems, during any 90-day period, up to the lesser of $250,000 or
1% of the assets of the fund. Although redemptions in excess of this limitation
will also normally be paid in cash, we reserve the right under unusual
circumstances to honor these redemptions by making payment in whole or in part
in readily marketable securities (a "redemption-in-kind").

     If payment is made in securities, the securities will be selected by the
fund, will be valued in the same manner as they are in computing the fund's net
asset value and will be provided 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.

     Despite the fund's 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.

REDEMPTION OF SHARES IN
LOW-BALANCE ACCOUNTS

     Whenever the shares held in an account have a value of less than the
required minimum, a letter will be sent advising you to either bring the value
of the shares held in the account up to the minimum or to establish an automatic
investment that is the equivalent of at least $50 per month. If action is not
taken within 90 days of the letter's date, the shares held in the account will
be redeemed and the proceeds from the redemption will be sent by check to your
address of record. We reserve the right to increase the investment minimums.

SIGNATURE GUARANTEE

     To protect your accounts from fraud, some transactions will require a
signature guarantee. Which transactions will require a signature guarantee will
depend on which service options you elect when you open your account. For
example, if you choose "In Writing Only," a signature guarantee would be
required when:

   o redeeming more than $25,000; or
   o establishing or increasing a Check-A-Month or automatic transfer on an
     existing account.

     You can obtain a signature guarantee from a bank or trust company, credit
union, broker, dealer, securities exchange or association, clearing agency or
savings association, as defined by federal law.

     For a more in-depth explanation of our signature guarantee policy, or if
you live outside the United States and would like to know how to obtain a
signature guarantee, please consult our Investor Services Guide.

     We reserve the right to require a signature guarantee on any transaction,
or to change this policy at any time.


                                       19


SPECIAL SHAREHOLDER SERVICES

     We offer several service options to make your account easier to manage.
These are listed on the account application. Please make note of these options
and elect the ones that are appropriate for you. Be aware that the Full Services
option offers you the most flexibility. You will find more information about
each of these service options in our Investor Services Guide.

     Our special shareholder services include:

AUTOMATED INFORMATION LINE

     We offer an Automated Information Line, 24 hours a day, seven days a week,
at 1-800-345-8765. By calling the Automated Information Line, you may listen to
fund prices, yields and total return figures. You may also use the Automated
Information Line to make investments into your accounts (if we have your bank
information on file) and obtain your share balance, value and most recent
transactions. If you have authorized us to accept telephone instructions, you
also may exchange shares from one fund to another via the Automated Information
Line. Redemption instructions cannot be given via the Automated Information
Line.

OPEN ORDER SERVICE

     Through our open order service, you may designate a price at which to buy
shares of a variable-priced fund by exchange from one of our money market funds,
or a price at which to sell shares of a variable-priced fund by exchange to one
of our money market funds. The designated purchase price must be equal to or
lower, or the designated sale price equal to or higher, than the variable-priced
fund's net asset value at the time the order is placed. If the designated price
is met within 90 calendar days, we will execute your exchange order
automatically at that price (or better). Open orders not executed within 90 days
will be canceled.

     If the fund you have selected deducts a distribution from its share price,
your order price will be adjusted accordingly so the distribution does not
inadvertently trigger an open order transaction on your behalf. If you close or
re-register the account from which the shares are to be redeemed, your open
order will be canceled.

     Because of their time-sensitive nature, open order transactions are
accepted only by telephone or in person. These transactions are subject to
exchange limitations described in each fund's prospectus, except that orders and
cancellations received before 2 p.m. Central time are effective the same day,
and orders or cancellations received after 2 p.m. Central time are effective the
next business day.

TAX-QUALIFIED RETIREMENT PLANS

     Each fund is available for your tax-deferred retirement plan. Call or write
us and request the appropriate forms for:

   o Individual Retirement Accounts (IRAs);
   o 403(b)plans for employees of public school systems and non-profit
     organizations; or
   o Profit sharing plans and pension plans for corporations and other 
     employers.

     If your IRA and 403(b) accounts do not total $10,000, each account is
subject to an annual $10 fee, up to a total of $30 per year.

     You can also transfer your tax-deferred plan to us from another company or
custodian. Call or write us for a Request to Transfer form.

IMPORTANT POLICIES REGARDING YOUR INVESTMENTS

     Every account is subject to policies that could affect your investment.
Please refer to the Investor Services Guide for further information about the
policies discussed below, as well as further detail about the services we offer.

     (1) We reserve the right for any reason to suspend the offering of shares
for a period of time, or to reject any specific purchase order (including
purchases by exchange). Additionally, purchases may be refused if, in the
opinion of the manager, they are of a size that would disrupt the management of
the fund.

                                       20


     (2) We reserve the right to make changes to any stated investment
requirements, including those that relate to purchases, transfers and
redemptions. In addition, we may also alter, add to or terminate any investor
services and privileges. Any changes may affect all shareholders or only certain
series or classes of shareholders.

     (3) Shares being acquired must be qualified for sale in your state of
residence.

     (4) Transactions requesting a specific price and date, other than open
orders, will be refused.

     (5) If a transaction request is made by a corporation, partnership, trust,
fiduciary, agent or unincorporated association, we will require evidence
satisfactory to us of the authority of the individual making the request.

     (6) We have established procedures designed to assure the authenticity of
instructions received by telephone. These procedures include requesting personal
identification from callers, recording telephone calls, and providing written
confirmations of telephone transactions. These procedures are designed to
protect shareholders from unauthorized or fraudulent instructions. If we do not
employ reasonable procedures to confirm the genuineness of instructions, then we
may be liable for losses due to unauthorized or fraudulent instructions. The
company, its transfer agent and investment adviser will not be responsible for
any loss due to instructions they reasonably believe are genuine.

     (7) All signatures should be exactly as the name appears in the
registration. If the owner's name appears in the registration as Mary Elizabeth
Jones, she should sign that way and not as Mary E. Jones.

     (8) Unusual stock market conditions have in the past resulted in an
increase in the number of shareholder telephone calls. If you experience
difficulty in reaching us during such periods, you may send your transaction
instructions by mail, express mail or courier service, or you may visit one of
our Investors Centers. You may also use our Automated Information Line if you
have requested and received an access code and are not attempting to redeem
shares.

     (9) If you fail to provide us with the correct certified taxpayer
identification number, we may reduce any redemption proceeds by $50 to cover the
penalty the IRS will impose on us for failure to report your correct taxpayer
identification number on information reports.

     (10) We will perform special inquiries on shareholder accounts. A research
fee of $15 may be applied.

REPORTS TO SHAREHOLDERS

     At the end of each calendar quarter, we will send you a consolidated
statement that summarizes all of your Twentieth Century and Benham holdings, as
well as an individual statement for each fund you own that reflects all
year-to-date activity in your account. You may request a statement of your
account activity at any time.

     With the exception of most automatic transactions, each time you invest,
redeem, transfer or exchange shares, we will send you a confirmation of the
transaction. See the Investor Services Guide for more detail.

     Carefully review all the information relating to transactions on your
statements and confirmations to ensure that your instructions were acted on
properly. Please notify us immediately in writing if there is an error. If you
fail to provide notification of an error with reasonable promptness, i.e.,
within 30 days of non-automatic transactions or within 30 days of the date of
your consolidated quarterly statement, in the case of automatic transactions, we
will deem you to have ratified the transaction.

     No later than January 31 of each year, we will send you reports that you
may use in completing your U.S. income tax return. See the Investor Services
Guide for more information.

     Each year, we will send you an annual and a semiannual report relating to
your fund, each of which is incorporated herein by reference. The annual report
includes audited financial statements and a list of portfolio securities as of
the fiscal year end. The semiannual report includes unaudited financial
statements for the first six

                                       21


months of the fiscal year, as well as a list of portfolio securities at the end
of the period. You also will receive an updated prospectus at least once each
year. Please read these materials carefully as they will help you understand
your fund.

EMPLOYER-SPONSORED RETIREMENT
PLANS AND INSTITUTIONAL ACCOUNTS

     Information contained in our Investor Services Guide and in the "How to
Invest" sections beginning on page 16 pertain to shareholders who invest
directly with Twentieth Century rather than through an employer-sponsored
retirement plan or through a financial intermediary. If you own or are
considering purchasing Fund shares through an employer-sponsored retirement
plan, your ability to purchase shares of the Funds, exchange them for shares of
other Twentieth Century or Benham funds, and redeem them will depend on the
terms of your plan. If you own or are considering purchasing Fund shares through
a bank, broker-dealer, insurance company or other financial intermediary, your
ability to purchase, exchange and redeem shares will depend on your agreement
with, and the policies of, such financial intermediary.

     You may reach one of our Institutional Investor Services Representatives by
calling 1-800-345-3533 to request information about our funds and services, to
obtain a current prospectus or to get answers to any questions about our funds
that you are unable to obtain through your plan administrator or financial
intermediary.

                                       22


                     ADDITIONAL INFORMATION YOU SHOULD KNOW
- --------------------------------------------------------------------------------

SHARE PRICE

WHEN SHARE PRICE IS DETERMINED

     The price of your shares is also referred to as their net asset value. Net
asset value is determined by calculating the total value of a fund's assets,
deducting total liabilities and dividing the result by the number of shares
outstanding. Net asset value is determined at the close of regular trading on
each day that the New York Stock Exchange is open.

     Investments and requests to redeem or exchange shares will receive the
share price next determined after we receive your investment, redemption or
exchange request. For example, investments and requests to redeem or exchange
shares received by us or one of our authorized agents before the close of
business on the New York Stock Exchange, usually 3 p.m. Central time, are
effective on, and will receive the price determined, that day as of the close of
the Exchange. Investment, redemption and exchange requests received thereafter
are effective on, and receive the price determined, as of the close of the
Exchange on the next day the Exchange is open.

     Investments are considered received only when your check or wired funds are
received by us. Wired funds are considered received on the day they are
deposited in our bank account if your telephone call is received before the
close of business on the Exchange and the money is deposited that day.

     Investments by telephone pursuant to your prior authorization to Twentieth
Century to draw on your bank account are considered received at the time of your
telephone call.

     Investment and transaction instructions received by us on any business day
by mail at its office prior to the close of business on the Exchange will
receive that day's price. Investments and instructions received after that time
will receive the price determined on the next business day.

     If you invest in fund shares through an employer-sponsored retirement plan
or other financial intermediary, 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 and to make payment for any purchase transactions in accordance with the
fund's procedures or any contractual arrangement with the funds or the funds'
distributor in order for you to receive that day's price.

HOW SHARE PRICE IS DETERMINED

     The valuation of assets for determining net asset value may be summarized
as follows:

     Portfolio securities of each 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
price 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.

     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

                                       23


business on the New York Stock Exchange, if that is earlier. That value is then
converted 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, which 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 Exchange is not
open and on which a 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 a fund's portfolio may be affected on days when shares of the fund may
not be purchased or redeemed.

WHERE TO FIND INFORMATION
ABOUT SHARE PRICE

     The net asset values of the Investor Class of the funds will be published
in leading newspapers daily upon meeting the minimum fund size and number of
shareholders for each listing. The net asset value of each fund may also be
obtained by calling us.

DISTRIBUTIONS

     Distributions from net investment income are declared and paid quarterly by
Strategic Allocation: Conservative and annually by Strategic Allocation:
Moderate and Strategic Allocation: Aggressive. Distributions from net realized
securities gains, if any, are declared and paid annually, usually in December,
but the funds may make distributions on a more frequent basis to comply with the
distribution requirements of the Internal Revenue Code, in all events in a
manner consistent with the provisions of the Investment Company Act.

     Participants in employer-sponsored retirement or savings plans must
reinvest all distributions. For shareholders investing in taxable accounts,
distributions will be reinvested unless you elect to receive them in cash.
Distributions of less than $10 generally will be reinvested. Distributions made
shortly after a purchase, made by check or ACH, may be held up to 15 days. You
may elect to have distributions on shares of Individual Retirement Accounts and
403(b) plans paid in cash only if you are at least 591/2 years old or
permanently and totally disabled. Distribution checks normally are mailed within
seven days after the record date. Please consult our Investor Services Guide for
further information regarding your distribution options.

     The board of directors may elect not to distribute capital gains in whole
or in part to take advantage of loss carryovers.

     A distribution on shares of a fund does not increase the value of your
shares or your total return. At any given time, the value of your shares
includes the undistributed net gains, if any, realized by the fund on the sale
of portfolio securities and undistributed dividends and interest received, less
fund expenses.

     Because undistributed gains and dividends are included in the value of your
shares prior to distribution, when they are distributed, the value of your
shares will be reduced by the amount of the distribution. If you buy your shares
through a taxable account just before the distribution, you will pay the full
price for your shares and then receive a portion of the purchase price back as a
taxable distribution. See "Taxes," page 25.


                                       24


TAXES

     Each fund has elected to be taxed as a regulated investment company under
Sub-chapter M of the Internal Revenue Code, which means that to the extent its
income is distributed to shareholders, it pays no income taxes.

TAX-DEFERRED ACCOUNTS

     If the Investor Class shares are purchased through tax-deferred accounts,
such as a qualified employer-sponsored retirement or savings plan, income and
capital gains distributions paid by the funds will generally not be subject to
current taxation, but will accumulate in your account under the plan on a
tax-deferred basis.

     Employer-sponsored retirement and savings plans are governed by complex tax
rules. If you elect to participate in your employer's plan, consult your plan
administrator, your plan's summary plan description, or a professional tax
advisor regarding the tax consequences of participation in the plan,
contributions to, and withdrawals or distributions from the plan.

TAXABLE ACCOUNTS

     If the Investor Class shares are purchased through taxable accounts,
distributions of net investment income and net short-term capital gains are
taxable to you as ordinary income. Distributions from net long-term capital
gains are taxable as long-term capital gains regardless of the length of time
you have held the shares on which such distributions are paid. 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 distribution of long-term capital gain to you with respect to such
shares.

     Dividends and interest received by the funds on foreign securities, and, in
limited circumstances capital gains realized by the funds upon the sale of such
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.

     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) remains the same. 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. See "Distributions," page 24.

     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.

     Distributions made to taxable accounts also may 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 adviser
about the tax status of such distributions in your own state.

     If you have not complied with certain provisions of the Internal Revenue
Code and Regulations, we are required by federal law to


                                       25


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. THIS CHARGE IS NOT
REFUNDABLE.

     Redemption of shares of a fund (including redemptions 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 generally will be long term if shareholders have held
such shares for a period of more than one year. 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.

MANAGEMENT

INVESTMENT MANAGEMENT

     Under the laws of the State of Maryland, the board of directors is
responsible for managing the business and affairs of the funds. Acting pursuant
to an investment management agreement entered into with the funds, Investors
Research Corporation ("Investors Research") serves as the investment manager of
the funds. Its principal place of business is Twentieth Century Tower, 4500 Main
Street, Kansas City, Missouri, 64111. Investors Research has been providing
investment management services to investment companies and institutional clients
since 1958.

     In June 1995, Twentieth Century Companies, Inc. ("TCC"), the parent of
Investors Research, acquired Benham Management International, Inc. In the
acquisition, Benham Management Corporation ("BMC"), the investment adviser to
the Benham Group of Mutual Funds, became a wholly owned subsidiary of TCC.
Certain employees of BMC provide investment management services to Twentieth
Century funds, while certain Twentieth Century employees provide investment
management services to Benham funds.

     Investors Research supervises and manages the investment portfolio of
Twentieth Century and directs the purchase and sale of its investment
securities. Investors Research utilizes a team of portfolio managers, assistant
portfolio managers and analysts acting together to manage the assets of the
funds. The team meets regularly to review portfolio holdings and to discuss
purchase and sale activity. The team adjusts holdings in the funds' portfolios
and the funds' asset mix as it deems appropriate in pursuit of the funds'
investment objectives. Individual portfolio manager members of the team may also
adjust portfolio holdings of the funds or of sectors of the funds as necessary
between team meetings.

     The portfolio manager members of the teams managing the funds described in
this Prospectus and their work experience for the last five years are as
follows:

     CHRISTOPHER K. BOYD, Vice President and Portfolio Manager, joined Twentieth
Century in March 1988 as an Investment Analyst, a position he held until
December 1990. At that time he was promoted to Assistant Portfolio Manager, and
then was promoted to Portfolio Manager in


                                       26


December 1992. He is a member of the team that manages Growth Investors and
Ultra Investors.

     C. CASEY COLTON, a Portfolio Manager for BMC, joined BMC in 1990 as a
Municipal Analyst. Mr. Colton was promoted to Portfolio Manager in 1995 and
co-manages the Benham GNMA Income Fund.

     PHILLIP N. DAVIDSON, Vice President and Portfolio Manager, joined Twentieth
Century in September 1993 as a Portfolio Manager. Prior to joining Twentieth
Century, Mr. Davidson served as an investment manager for Boatmen's Trust
Company in St. Louis, Missouri.

     GLENN A. FOGLE, Vice President and Portfolio Manager, joined Twentieth
Century in September 1990 as an Investment Analyst, a position he held until
March 1993. At that time he was promoted to Portfolio Manager. He is a member of
the team that manages Vista Investors and Giftrust Investors.

     NORMAN E. HOOPS, Senior Vice President and Fixed Income Portfolio Manager,
joined Twentieth Century as Vice President and Portfolio Manager in November
1989. In April 1993, he became Senior Vice President. He is a member of the team
that manages Limited-Term Bond, Intermediate-Term Bond, Long-Term Bond and the
fixed income portion of Balanced Investors.

     DAVID SCHROEDER, Vice President and Portfolio Manager for BMC, joined BMC
in July 1990. Mr. Schroeder has primary responsibility for the day-to-day
operations of the Benham Treasury Note, Benham Short-Term, and Benham Long-Term
Funds. He also manages Benham Target Maturities Trust.

     JEFFREY R. TYLER, Senior Vice President and Portfolio Manager for BMC,
joined BMC in January 1988 as a Portfolio Manager. Mr. Tyler supervises the team
of other Portfolio Managers who assist in the management of the various
investment categories of the funds. Mr. Tyler also co-manages the Benham GNMA
Income Fund. He also has primary responsibility for the day-to-day operations of
the Benham Capital Manager Fund and oversees the portfolio manager's operation
of the Benham European Government Bond Fund.

     THEODORE J. TYSON, Vice President and Portfolio Manager, joined Investors
Research in 1988 and has been a member of the International Equity and
International Emerging Growth team since its inception in 1991.

     PETER A. ZUGER, Vice President and Portfolio Manager, joined Twentieth
Century in June 1993 as a Portfolio Manager. Prior to joining Twentieth Century,
Mr. Zuger served as an investment manager in the Trust Department of NBD Bancorp
in Detroit, Michigan.

     The activities of Investors Research are subject only to directions of the
funds' board of directors. Investors Research pays all the expenses of the funds
except brokerage, taxes, interest, fees and expenses of the non-interested
person directors (including counsel fees) and extraordinary expenses.

     For the services provided to the funds, Investors Research receives an
annual fee of 1.00% of average net assets up to $1 billion and .90% of average
net assets in excess of $1 billion for Strategic Allocation: Conservative, 1.10%
of average net assets up to $1 billion and 1.00% of average net assets in excess
of $1 billion for Strategic Allocation: Moderate, and 1.20% of average net
assets up to $1 billion and 1.10% of average net assets in excess of $1 billion
for Strategic Allocation: Aggressive. On the first business day of each month,
each fund pays a management fee to the manager for the previous month at the
specified rate. The fee for the previous month is calculated by multiplying the
applicable fee for such fund by the aggregate average daily closing value of
each fund's net assets during the previous month 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 fees paid by the funds to Investors Research may be higher
than those paid by many investment companies. However,


                                       27


most if not all of such companies also pay, in addition, certain of their own
expenses, while virtually all of the funds' expenses, except as specified above,
are paid by Investors Research.

CODE OF ETHICS

     The funds and Investors Research have adopted a Code of Ethics, which
restricts personal investing practices by employees of Investors Research and
its affiliates. Among other provisions, the Code of Ethics requires that
employees with access to information about the purchase or sale of securities in
the funds' portfolios obtain preclearance before executing personal trades. With
respect to portfolio managers and other investment personnel, the Code of Ethics
prohibits acquisition of securities in an initial public offering, as well as
profits derived from the purchase and sale of the same security within 60
calendar days. These provisions are designed to ensure that the interests of
fund shareholders come before the interests of the people who manage those
funds.

TRANSFER AND
ADMINISTRATIVE SERVICES

     Twentieth Century Services, Inc., 4500 Main Street, Kansas City, Missouri,
64111, acts as transfer, administrative services and dividend paying agent for
Twentieth Century. It provides facilities, equipment and personnel to Twentieth
Century and is paid for such services by Investors Research.

     From time to time, special services may be offered to shareholders who
maintain higher share balances in the Twentieth Century 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 Investors Research.

     Investors Research and Twentieth Century Services, Inc., are both wholly
owned by Twentieth Century Companies, Inc. James E. Stowers Jr., chairman of the
board of directors of the funds, controls Twentieth Century Companies by virtue
of his ownership of a majority of its common stock.

DISTRIBUTION OF FUND SHARES

     The funds' shares are distributed by Twentieth Century Securities, Inc.
(the "Distributor"), a registered broker dealer and an affiliate of the funds'
investment manager. Investors Research pays all expenses for promoting sales of,
and distributing the Investor Class of the fund shares offered by this
Prospectus. The Investor Class of shares does not pay any commissions or other
fees to the Distributor or to any other broker dealers or financial
intermediaries in connection with the distribution of fund shares.

FURTHER INFORMATION
ABOUT TWENTIETH CENTURY

     Twentieth Century Strategic Asset Allocations, Inc. was organized as a
Maryland corporation on April 4, 1994.

     The corporation is a diversified, open-end management investment company
whose shares were first offered for sale February 15, 1996. Its business and
affairs are managed by its officers under the direction of its board of
directors. The principal office of Twentieth Century is Twentieth Century Tower,
4500 Main Street, P.O. Box 419200, Kansas City, Missouri, 64141-6200. All
inquiries may be made by mail to that address, or by phone to 1-800-345-2021.
(For international callers: 816-531-5575.)

     Twentieth Century Strategic Asset Allocations, Inc. issues three series of
$0.01 par value shares, Strategic Allocation: Conservative, Strategic
Allocation: Moderate and Strategic Allocation: Aggressive. The assets belonging
to each series of shares are held separately by the custodian.


                                       28


     Each of the funds described in this Prospectus offers three classes of
shares: an Investor Class, a Service Class, and an Advisor Class. The shares
offered by this Prospectus are Investor Class shares and have no up-front
charges, commissions, or 12b-1 fees.

     The other classes of shares are primarily offered to institutional
investors or through institutional distribution channels, such as
employer-sponsored retirement plans or through banks, broker dealers, insurance
companies or other financial intermediaries. The other classes have different
fees, expenses, and/or minimum investment requirements than the Investor 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, and (d) each class
may have different exchange privileges.

     Each share, irrespective of series or class, is entitled to one vote for
each dollar of net asset value applicable to such share on all questions, except
for those matters that must be voted on separately by the series or class of
shares affected. Matters affecting only one series or class are voted upon only
by that series or class.

     Shares have non-cumulative voting rights, which means that the holders of
more than 50% of the shares voting for the election of directors can elect all
of the directors if they choose to do so, and in such event the holders of the
remaining shares will not be able to elect any person or persons to the board of
directors.

     Unless required by the Investment Company Act, it will not be necessary for
the funds to hold annual meetings of shareholders. As a result, shareholders may
not vote each year on the election of directors or the appointment of auditors.
However, pursuant to the funds' bylaws, the holders of at least 10% of the votes
entitled to be cast may request the funds to hold a special meeting of
shareholders. We will assist in the communication with other shareholders.

     WE RESERVE THE RIGHT TO CHANGE ANY OF OUR POLICIES, PRACTICES AND
PROCEDURES DESCRIBED IN THIS PROSPECTUS, INCLUDING THE STATEMENT OF ADDITIONAL
INFORMATION, WITHOUT SHAREHOLDER APPROVAL EXCEPT IN THOSE INSTANCES WHERE
SHAREHOLDER APPROVAL IS EXPRESSLY REQUIRED.


                                       29


                 This page has been left blank for your notes.



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                                                       TWENTIETH CENTURY
                                                    ASSET ALLOCATION FUNDS

                                                   INVESTOR CLASS PROSPECTUS
  
                                                       SEPTEMBER 3, 1996
TWENTIETH CENTURY MUTUAL FUNDS
and THE BENHAM GROUP
- ---------------------------------------------

P.O. BOX 419200
KANSAS CITY, MISSOURI
64141-6200
- ---------------------------------------------
Person-to-person assistance:
1-800-345-2021 OR 816-531-5575
- ---------------------------------------------
Automated Information Line:
1-800-345-8765
- ---------------------------------------------
Telecommunications Device for the Deaf:
1-800-634-4113 or 816-753-1865
- ---------------------------------------------
Fax: 816-340-7962
- ---------------------------------------------
Internet: HTTP://WWW.TWENTIETH-CENTURY.COM
- ---------------------------------------------
                                                      TWENTIETH CENTURY 
                                                       STRATEGIC ASSET 
                                                         ALLOCATIONS
- --------------------------------------------------------------------------------
SH-BKT-5310   [recycle logo]
9608             Recycled

<PAGE>
                                TWENTIETH CENTURY
                             ASSET ALLOCATION FUNDS

                            SERVICE CLASS PROSPECTUS
                                  SEPTEMBER 3,
                                      1996

                    TWENTIETH CENTURY STRATEGIC ASSET ALLOCATIONS
- --------------------------------------------------------------------------------

TWENTIETH CENTURY

     Twentieth Century Strategic Asset Allocations, Inc., a member of the
Twentieth Century family of funds, is an open-end diversified management
investment company. Three series of shares, or "funds," are described in this
Prospectus, Strategic Allocation: Conservative, Strategic Allocation: Moderate
and Strategic Allocation: Aggressive.

     The investment objective of each fund is to provide as high a level of
total return (capital appreciation plus dividend and interest income) as is
consistent with its risk profile. Each fund seeks to achieve its investment
objective by diversifying investments among three asset classes -- equity
securities, bonds and cash equivalent instruments, the mix of which will depend
on the risk profile of the particular fund. The funds are designed for investors
with investment time horizons of at least five years who want to diversify their
investments among these various asset classes through a single investment
vehicle. There is no assurance that the funds will achieve their investment
objectives. See "Investment Policies of the Funds," page 5.

     Each fund's shares offered in this Prospectus (the Service Class shares)
are sold at their net asset value with no sales charges or commissions. The
Service Class shares are subject to a Rule 12b-1 shareholder services fee as
described in this Prospectus.

     The Service Class shares are intended for purchase by participants in
employer-sponsored retirement or savings plans and for persons purchasing shares
through financial intermediaries, such as banks, broker dealers and insurance
companies, that provide various recordkeeping and administrative services.

     This Prospectus gives you information about the funds that you should know
before investing. You should read this Prospectus carefully and retain it for
future reference. Additional information is included in the Statement of
Additional Information dated September 3, 1996, and filed with the Securities
and Exchange Commission. It is incorporated in this Prospectus by reference.
To obtain a copy without charge, call or write:

                         Twentieth Century Mutual Funds
                       4500 Main Street o P.O. Box 419385
                   Kansas City, MO 64141-6385 o 1-800-345-3533
                        International calls: 816-531-5575
                     Telecommunications Device for the Deaf:
                   1-800-345-1833 o In Missouri: 816-753-0700
                   Internet: http://www.twentieth-century.com


- --------------------------------------------------------------------------------
     THESE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE SECURITIES
AND EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION, NOR HAS THE
SECURITIES AND EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION PASSED
UPON THE ACCURACY OR ADEQUACY OF THIS PROSPECTUS. ANY REPRESENTATION TO THE
CONTRARY IS A CRIMINAL OFFENSE.

<PAGE>


                                  TABLE OF CONTENTS
- --------------------------------------------------------------------------------

     Transaction and Operating Expense Table.....................3
     Financial Highlights........................................4

                        INFORMATION REGARDING THE FUNDS

     INVESTMENT POLICIES OF THE FUNDS............................5
       Investment Objectives.....................................5
       The Funds.................................................5
       Investment Strategy and
         Asset Diversification...................................5
       Investment Approach and Practices.........................6
       General Portfolio Management..............................8
     OTHER INVESTMENT PRACTICES, THEIR
       CHARACTERISTICS AND RISKS.................................8
       Equity Securities.........................................8
       Foreign Securities........................................9
       Mortgage-Related and Other
         Asset-Backed Securities................................10
       Forward Currency Exchange Contracts
         and Options Thereon....................................11
       Portfolio Turnover.......................................12
       Repurchase Agreements....................................12
       Futures Contracts........................................12
       Derivative Securities....................................13
       When-Issued Securities...................................14
       Short Sales..............................................14
       Rule 144A Securities.....................................14
     PERFORMANCE ADVERTISING....................................14

        HOW TO INVEST WITH TWENTIETH CENTURY AND THE BENHAM GROUP

     HOW TO PURCHASE AND SELL
       TWENTIETH CENTURY FUNDS..................................16
     HOW TO EXCHANGE YOUR INVESTMENT
       FROM ONE TWENTIETH CENTURY
       FUND TO ANOTHER..........................................16
     HOW TO REDEEM SHARES.......................................16
       Special Requirements for Large
        Redemptions.............................................17
     TELEPHONE SERVICES.........................................17
       Investors Line...........................................17
       Automated Information Line...............................17

                    ADDITIONAL INFORMATION YOU SHOULD KNOW

     SHARE PRICE................................................18
       When Share Price Is Determined...........................18
       How Share Price Is Determined............................18
       Where to Find Information
         About Share Price......................................19
     DISTRIBUTIONS..............................................19
     TAXES......................................................19
       Tax-Deferred Accounts....................................19
       Taxable Accounts.........................................20
     MANAGEMENT.................................................21
       Investment Management....................................21
       Code of Ethics...........................................22
       Transfer and Administrative Services.....................23
     DISTRIBUTIONS OF FUND SHARES...............................23
       Service Fees.............................................23
     FURTHER INFORMATION
       ABOUT TWENTIETH CENTURY..................................23


                                       2


                      TRANSACTION AND OPERATING EXPENSE TABLE
- --------------------------------------------------------------------------------

                                           STRATEGIC     STRATEGIC    STRATEGIC
                                          ALLOCATION:   ALLOCATION:  ALLOCATION:
                                         CONSERVATIVE    MODERATE    AGGRESSIVE

SHAREHOLDER TRANSACTION EXPENSES:
    Maximum Sales Load Imposed on
      Purchases................................none         none        none
    Maximum Sales Load Imposed on
      Reinvested Dividends.....................none         none        none
    Deferred Sales Load........................none         none        none
    Redemption Fee.............................none         none        none
    Exchange Fee...............................none         none        none

ANNUAL FUND OPERATING EXPENSES 
(as a percentage of net assets):
    Management Fees............................0.75%(1)     0.85%(2)    0.95%(3)
    12b-1 Fees(4)..............................0.25%        0.25%       0.25%
    Other Expenses(5)..........................0.00%        0.00%       0.00%
    Total Fund Operating Expenses .............1.00%        1.10%       1.20%

Example: You would pay the following
expenses on a $1,000 investment, assuming
a 5% annual return and redemption at the
end of each time period(6):        1  year      $10          $11         $12
                                   3 years       32           35          38


(1) The fund pays an annual management fee equal to 0.75% of its first $1
    billion of average net assets and 0.65% of average net assets over $1 
    billion.

(2) The fund pays an annual management fee equal to 0.85% of its first $1
    billion of average net assets and 0.75% of average net assets over $1 
    billion.

(3) The fund pays an annual management fee equal to 0.95% of its first $1
    billion of average net assets and 0.85% of average net assets over $1 
    billion.

(4) The 12b-1 fee is designed to permit investors to purchase Service Class
    shares through retirement and pension plans and financial intermediaries 
    and is used to compensate service providers for on-going recordkeeping and
    administrative services that would otherwise be performed by an affiliate of
    the manager. See "Service Fees," page 23.

(5) Other expenses, which include the fees and expenses (including legal counsel
    fees) of those directors who are not "interested persons" as defined in the
    Investment Company Act, are expected to be approximately .00035 of 1% of 
    average net assets for the fund's first fiscal year.

(6) Assumes that the average net assets of the funds remain constant at less
    than $1 billion.

     The purpose of this table is to help you understand the various costs and
expenses that you, as a shareholder, will bear directly or indirectly in
connection with an investment in the class of shares of the funds offered by
this Prospectus. The example set forth above assumes reinvestment of all
dividends and distributions and uses a 5% annual rate of return as required by
Securities and Exchange Commission regulations.

     NEITHER THE 5% RATE OF RETURN NOR THE EXPENSES SHOWN ABOVE SHOULD BE
CONSIDERED INDICATIONS OF PAST OR FUTURE RETURNS AND EXPENSES. ACTUAL RETURNS
AND EXPENSES MAY BE GREATER OR LESS THAN THOSE SHOWN.

     The shares offered by this Prospectus are Service Class shares. The funds
offer two other classes of shares, one of which is primarily made available to
retail investors and one that is primarily made available to institutional
investors. The other classes have different fee structures than the Service
Class, resulting in different performance for those classes, see "Further
Information About Twentieth Century," page 23.

- --------------------------------------------------------------------------------
NO PERSON IS AUTHORIZED BY THE FUNDS TO GIVE ANY INFORMATION OR MAKE ANY
REPRESENTATION OTHER THAN THOSE CONTAINED IN THIS PROSPECTUS OR IN OTHER PRINTED
OR WRITTEN MATERIAL ISSUED BY OR ON BEHALF OF THE FUNDS, AND YOU SHOULD NOT RELY
ON ANY OTHER INFORMATION OR REPRESENTATION.


                                          3

<TABLE>
<CAPTION>
- --------------------------------------------------------------------------------
FINANCIAL HIGHLIGHTS (For a Share Outstanding Throughout the Period)

     The Service Class of the funds was established September 3, 1996. The
financial information in this table regarding selected per share data for each
of the funds reflects the performance of the funds' Investor Class of shares,
which has the same total expense ratio as the Service Class shares.

     The Financial Highlights table below sets forth certain information
concerning the historic investment results of the funds. The financial data
included in the table, which is unaudited, has been derived from the financial
statements contained in the Statement of Additional Information.

                                              STRATEGIC              STRATEGIC              STRATEGIC
                                             ALLOCATION:            ALLOCATION:            ALLOCATION:
                                            CONSERVATIVE             MODERATE              AGGRESSIVE
                                        ---------------------  ---------------------  --------------------
                                          February 15, 1996      February 15, 1996      February 15, 1996
                                         (Inception) through    (Inception) through    (Inception) through
                                            May 31, 1996           May 31, 1996           May 31, 1996
                                             (Unaudited)            (Unaudited)            (Unaudited)
- ----------------------------------------------------------------------------------------------------------
<S>                                             <C>                    <C>                    <C>  
NET ASSET VALUE,
BEGINNING OF PERIOD........................     $5.00                  $5.00                  $5.00
                                                -----                  -----                  -----
INCOME FROM
INVESTMENT OPERATIONS

   Net Investment Income(1)................       .05                    .04                    .03

   Net Realized and
   Unrealized Gains (Losses)...............      (.02)                   .12                    .20
                                                -----                  -----                  -----
   Total from
   Investment Operations...................       .03                    .16                    .23
                                                -----                  -----                  -----

DISTRIBUTIONS
   From Net
   Investment Income.......................      (.02)                  (.02)                    --
                                                -----                  -----                  -----
NET ASSET VALUE,
END OF PERIOD..............................     $5.01                  $5.14                  $5.23
                                                =====                  =====                  =====
   TOTAL RETURN(2).........................       .64%                  3.11%                  4.60%

RATIOS/SUPPLEMENTAL DATA
   Ratio of Expenses to
   Average Net Assets(3)...................      1.05%                  1.12%                  1.22%

   Ratio of Net Investment Income
   to Average Net Assets(3)................      3.65%                  2.74%                  1.88%

   Portfolio Turnover Rate.................        25%                    24%                    34%

   Average Commission Paid per
   Share Traded ...........................    $.0206                 $.0173                 $.0198

   Investment Security Traded
   Net Assets, End of Period (in thousands)    $8,061                $14,953                $16,370
 ---------------------------------------------------------------------------------------------------------
</TABLE>
(1) Computed using average shares outstanding throughout the period.

(2) Total returns for periods less than one year are not annualized. Total
    return assumes reinvestment of dividends and capital gain distributions, 
     if any.

(3) Annualized

                                       4


                        INFORMATION REGARDING THE FUNDS
- --------------------------------------------------------------------------------

INVESTMENT POLICIES
OF THE FUNDS

INVESTMENT OBJECTIVES

     Twentieth Century offers three asset allocation funds: Strategic
Allocation: Conservative, Strategic Allocation: Moderate and Strategic
Allocation: Aggressive.

     Each fund's investment objective is to obtain as high a level of total
return (capital appreciation plus dividend and interest income)as is consistent
with such fund's risk profile. As with all mutual funds, there can be no
assurance that the funds will achieve their investment objectives.

     You should be aware that the names of the funds are intended to reflect the
relative short-term price volatility risk among the three asset allocation funds
offered in this Prospectus and not as an indication of the manager's assessment
of the riskiness of the funds as compared to other mutual funds, including other
mutual funds within the Twentieth Century family of funds.

THE FUNDS

     The funds pursue a flexible approach that diversifies the funds' assets
among various classes and categories of assets. Each fund has its own mix, which
gives it a distinct risk profile and return potential. The three funds enable
investors to select the level of risk that is appropriate for their particular
situations and investment goals. See "Investment Strategy and Asset
Diversification," this page.

STRATEGIC ALLOCATION: CONSERVATIVE

     The asset mix of Strategic Allocation: Conservative seeks to provide
shareholders with regular income through its emphasis on bonds and money market
securities, combined with the potential for moderate long-term total return as a
result of its stake in equity securities. The fund's emphasis on bonds and money
market securities should help to provide a measure of principal protection while
the stock market is in a decline.

STRATEGIC ALLOCATION: MODERATE

     The asset mix of Strategic Allocation: Moderate emphasizes investments in
equity securities, but maintains a sizable stake in bonds and money market
securities. This asset mix seeks to provide long-term growth and some regular
income, while helping to moderate losses when the stock market declines.

STRATEGIC ALLOCATION: AGGRESSIVE

     The asset mix of Strategic Allocation: Aggressive emphasizes investments in
equity securities, but maintains a portion of its assets in bonds and money
market securities. This asset mix seeks to provide long-term growth, together
with a small amount of income to help cushion the volatility of the equity
portfolio.

INVESTMENT STRATEGY AND
ASSET DIVERSIFICATION

     The funds seek to achieve their investment objectives by pursuing a
strategic asset allocation strategy. Each fund will diversify its investments
among three major asset classes -- equity securities, bonds and cash equivalent
instruments.

     Each fund has its own neutral mix that represents a benchmark as to how
that fund's investments will be generally allocated among the major asset
classes over the long term. Each fund's neutral mix is set forth below:

                         NEUTRAL MIXES
                            EQUITY                      CASH
FUND                      SECURITIES      BONDS      EQUIVALENTS
- ----------------------------------------------------------------
Strategic Allocation:
Conservative                  40%          45%          15%
- ----------------------------------------------------------------
Strategic Allocation:
Moderate                      60%          30%          10%
- ----------------------------------------------------------------
Strategic Allocation:
Aggressive                    75%          20%           5%
- ----------------------------------------------------------------

     The mix of a fund will vary over short-term periods depending on the
relative performance of the various asset classes (for example, when one class
of assets increases or decreases in value at


                                       5


a different rate than the other classes). In addition, the manager may
temporarily emphasize or de-emphasize a class of assets based on market
conditions regarding the relative value of the asset class in the near term.
However, each fund has operating ranges that restrict the amount by which the
assets of each class may fluctuate. Those operating ranges are set forth below:

                             OPERATING RANGES
                            EQUITY                      CASH
FUND                      SECURITIES      BONDS      EQUIVALENTS
- ----------------------------------------------------------------
Strategic Allocation:
Conservative                34-46%        38-52%      10-25%
- ----------------------------------------------------------------
Strategic Allocation:
Moderate                    50-70%        20-40%       5-20%
- ----------------------------------------------------------------
Strategic Allocation:
Aggressive                  60-90%        10-30%       0-15%
- ----------------------------------------------------------------

     In addition to diversifying among asset classes, the assets in the equity
and bond classes are further diversified among investment categories (or
sectors) and styles within those classes. See "Investment Approach and
Practices," this page. The allocation of assets within a fund's operating range
and among the different investment categories within each class is designed to
provide a diversified portfolio emphasizing total return.

INVESTMENT APPROACH
AND PRACTICES

     As described above, each fund's assets are allocated among major asset
classes according to their respective asset mix and subject to the applicable
operating ranges. Each fund's assets are further diversified among various
investment categories and disciplines within the major asset classes, as
described below.

EQUITY SECURITIES

     The equity portion of a fund's portfolio may be invested in any type of
domestic or foreign equity security, primarily common stocks, that meets certain
fundamental and technical standards of selection. The manager will utilize two
distinct investment disciplines in managing the equity portion of each fund's
portfolio: (1) growth; and (2) value.

     The growth discipline seeks long-term capital appreciation by investing in
companies whose earnings and revenue trends meet the manager's standards of
selection, which generally means that the companies have demonstrated, or, in
the manager's opinion, have the prospects for demonstrating, accelerating
earnings and revenues as compared to prior periods and/or industry competitors.
The value investment discipline seeks capital growth by investing in equity
securities of well-established companies that are believed by the manager to be
temporarily undervalued.

     The manager believes that both value investing and growth investing provide
the potential for appreciation over time. Value investing tends to provide less
volatile results. This lower volatility means that the price of value stocks
tends not to fall as significantly as growth stocks do in down markets. However,
value stocks do not usually appreciate as significantly as growth stocks do in
up markets. In keeping with the diversification theme of these funds, and as a
result of management's belief that these styles are complementary, both
disciplines will be represented to some degree in each portfolio at all times.

     As noted, the value investment discipline tends to be less volatile than
the growth style. As a result, Strategic Allocation: Conservative will generally
have a higher proportion of its equity investments in value stocks than the
other two funds. Likewise, Strategic Allocation: Aggressive will generally have
a greater proportion of growth stocks than either Strategic Allocation: Moderate
or Strategic Allocation: Conservative.

     In addition, the equity portion of each fund's portfolio will be further
diversified among small, medium and large companies. This approach provides
investors with an additional level of diversification and enables investors to
achieve a broader exposure to the various capitalization ranges without having
to invest in multiple funds.

                                       6


     Although the funds will remain exposed to each of the investment
disciplines and categories described above, a particular discipline or
investment category may be emphasized when, in the manager's opinion, such
discipline or investment category is undervalued relative to the other
disciplines or categories. See "Other Investment Practices, Their
Characteristics and Risks," page 8.

BONDS

     The fixed income portion of a fund's portfolio will include U.S. Treasury
securities, securities issued or guaranteed by the U.S. government or a foreign
government, or an agency or instrumentality of the U.S. or a foreign government,
and non-convertible debt obligations issued by U.S. or foreign corporations. The
funds may also invest in mortgage-related and other asset-backed securities as
described under "Mortgage-Related and Other Asset-Backed Securities," page 10.
As with the equity portion of a fund's portfolio, the bond portion of a fund's
portfolio will be diversified among the various types of fixed income investment
categories described above. The manager's strategy is to actively manage the
portfolio by investing the fund's assets in sectors it believes are undervalued
(relative to the other sectors) and which represent better relative long-term
investment opportunities.

     The value of fixed income securities fluctuates based on changes in
interest rates and in the credit quality of the issuer. Debt securities that
comprise part of a fund's fixed income portfolio will primarily be limited to
"investment grade" obligations. However, Strategic Allocation: Moderate may
invest up to 5% of its assets, and Strategic Allocation: Aggressive may invest
up to 10% of its assets, in "high yield" securities. "Investment grade" means
that at the time of purchase, such obligations are rated within the four highest
categories by a nationally recognized statistical rating organization [for
example, at least Baa by Moody's Investors Service, Inc. ("Moody's") or BBB by
Standard & Poor's Corporation ("S&P")], or, if not rated, are of equivalent
investment quality as determined by the investment manager. According to
Moody's, bonds rated Baa are medium-grade and possess some speculative
characteristics. A BBB rating by S&P indicates S&P's belief that a security
exhibits a satisfactory degree of safety and capacity for repayment, but is more
vulnerable to adverse economic conditions and changing circumstances.

     "High yield" securities, sometimes referred to as "junk bonds," are higher
risk, non-convertible debt obligations that are rated below investment grade
securities, or are unrated, but with similar credit quality.

     There are no credit or maturity restrictions on the fixed income securities
in which the high yield portion of a fund's portfolio may be invested. Debt
securities rated lower than Baa by Moody's or BBB by S&P or their equivalent are
considered by many to be predominantly speculative. Changes in economic
conditions or other circumstances are more likely to lead to a weakened capacity
to make principal and interest payments on such securities than is the case with
higher quality debt securities. Regardless of rating levels, all debt securities
considered for purchase by the fund are analyzed by the investment manager to
determine, to the extent reasonably possible, that the planned investment is
sound, given the investment objective of the fund. See "An Explanation of Fixed
Income Securities Ratings" in the Statement of Additional Information.

     Under normal market conditions, the maturities of fixed-income securities
in which the funds invest will range from 2 to 30 years.

CASH EQUIVALENTS

     The cash equivalent portion of a fund's portfolio may be invested in
high-quality money market instruments (denominated in U.S. dollars or foreign
currencies), including U.S. government obligations, obligations of domestic and
foreign banks, short-term corporate debt instruments and repurchase agreements.


                                       7


GENERAL PORTFOLIO MANAGEMENT

     Within each asset class, each fund's holdings will be invested across
industry groups and issuers that meet its investment criteria. This diversity of
investment is intended to help reduce the risk created by over-concentration in
a particular industry or issuer.

     The funds are "strategic" rather than "tactical" allocation funds, which
means that the manager does not try to time the market to identify the exact
time when a major reallocation should be made. Instead, the manager utilizes a
longer-term approach in pursuing the funds' investment objectives, and thus
selects a blend of investments in the various asset classes.

     The manager regularly reviews each fund's investments and allocations and
may make changes in the particular securities within each asset class or to a
fund's asset mix (within the defined operating ranges) to favor investments that
it believes will provide the most favorable outlook for achieving a fund's
objective. Recommended reallocations may be implemented promptly or may be
implemented gradually. In order to minimize the impact of reallocations on a
fund's performance, the manager will generally attempt to reallocate assets
gradually.

     In determining the allocation of assets among U.S. and foreign capital
markets, the manager considers the condition and growth potential of the various
economies; the relative valuations of the markets; and social, political, and
economic factors that may affect the markets.

     In selecting securities in foreign currencies, the manager considers, among
other factors, the impact of foreign exchange rates relative to the U.S. dollar
value of such securities. The manager may seek to hedge all or a part of a
fund's foreign currency exposure through the use of forward foreign currency
contracts or options thereon. See "Forward Currency Exchange Contracts and
Options Thereon," page 11.

     The funds attempt to diversify across asset classes and investment
categories to a greater extent than mutual funds that invest primarily in equity
securities or primarily in fixed income securities. However, the funds are
designed to fit three general risk profiles and may not provide an appropriately
balanced investment plan for all investors.

     The funds' investment objectives, as identified on the front cover of this
Prospectus, and any other investment policies designated as "fundamental" in
this Prospectus or in the Statement of Additional Information, cannot be changed
without the approval of the shareholders entitled to cast a majority of the
outstanding votes of the corporation, as defined by the Investment Company Act.
Unless otherwise noted, all other investment policies and practices are
nonfundamental and may be changed without shareholder approval.

OTHER INVESTMENT PRACTICES,
THEIR CHARACTERISTICS AND RISKS

     For additional information, see "Investment Restrictions" in the Statement
of Additional Information.

EQUITY SECURITIES

     In addition to investing in common stocks, the funds may invest in other
equity securities and equity equivalents. Other equity securities and equity
equivalents include securities that permit the fund to receive an equity
interest in an issuer, the opportunity to acquire an equity interest in an
issuer, or the opportunity to receive a return on its investment that permits
the fund to benefit from the growth over time in the equity of an issuer.
Examples of equity securities and equity equivalents include preferred stock,
convertible preferred stock and convertible debt securities.

     Each fund will limit its purchase of convertible debt securities to those
that, at the time of purchase, are rated at least B- by S&P or B3 by Moody's, or
if not rated by S&P or Moody's are of equivalent investment quality as
determined by the manager. A fund's investments in convertible


                                       8


debt securities and other high yield, non-convertible debt securities rated
below investment grade will comprise less than 35% of the fund's net assets.
Debt securities rated below the four highest categories are not considered
"investment grade" obligations. These securities have speculative
characteristics and present more credit risk than investment grade obligations.
For a description of the S&P and Moody's ratings categories, see "An Explanation
of Fixed Income Securities Ratings," in the Statement of Additional Information.
Equity equivalents may also include securities whose value or return is derived
from the value or return of a different security. Depositary receipts are an
example of the type of equity equivalent security in which the funds might
invest.

FOREIGN SECURITIES

     Each fund may invest in the securities of foreign issuers, including debt
securities of foreign governments and their agencies, when these securities meet
its standards of selection. The manager defines "foreign issuer" as an issuer of
securities that is domiciled outside the United States, derives at least 50% of
its total revenue from production or sales outside the United States, and/or
whose principal trading market is outside the United States.

     Strategic Allocation: Conservative will generally invest between 7 and 17%
of its assets in foreign securities; Strategic Allocation: Moderate will
generally invest between 10 and 30% of its assets in foreign securities; and
Strategic Allocation: Aggressive will generally invest between 15 and 35% of its
assets in foreign securities. With regard to foreign investments by Strategic
Allocation: Conservative, the principal activities of such issuers will be
located in developed countries. With regard to Strategic Allocation: Aggressive
and Strategic Allocation: Moderate, the principal activities of such issuers may
be located in either developed or developing countries, but the majority of the
activities will be in developed countries.

     The funds may make such investments either directly in foreign securities
or indirectly by purchasing depositary receipts or depositary shares of similar
instruments ("depositary receipts") for foreign securities. Depositary receipts
are securities that are listed on exchanges or quoted in the domestic
over-the-counter markets in one country but represent shares of issuers
domiciled in another country. Direct investments in foreign securities may be
made either on foreign securities exchanges or in the over-the-counter markets.

     Subject to its investment objective and policies, each fund may invest in
common stocks, convertible securities, preferred stocks, bonds, notes and other
debt securities of foreign issuers and debt securities of foreign governments
and their agencies. The credit quality standards applicable to domestic
securities purchased by each fund are also applicable to its foreign securities
investments.

     Investments in foreign securities may present certain risks, including
those resulting from fluctuations in currency exchange rates, future political
and economic developments, 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.

     Strategic Allocation: Moderate and Strategic Allocation: Aggressive may
invest a portion of their international holdings in securities of issuers in
emerging market (developing) countries. Investing in emerging market countries
involves significantly higher risk than investing in countries with developed
markets as a result of uncertainty regarding the companies and the markets in
which they operate. Securities prices can be more volatile than in developed
countries as a result of investor concerns regarding the stability of the
government, internal economic pressures, and the impact of external economic
factors. In

                                       9


addition, securities markets in emerging market countries may trade a small
number of securities and may be unable to respond effectively to increases in
trading volume, potentially resulting in a lack of liquidity and in volatility
in the price of securities traded on those markets. Also, securities markets in
emerging market countries typically offer less regulatory protection for
investors. See "Investing in Emerging Market Countries," in the Statement of
Additional Information.

MORTGAGE-RELATED AND OTHER ASSET-BACKED SECURITIES

     The funds may purchase mortgage-related and other asset-backed securities.
Mortgage pass-through securities are securities representing interests in
"pools" of mortgages in which payments of both interest and principal on the
securities are generally made monthly, in effect "passing through" monthly
payments made by the individual borrowers on the residential mortgage loans that
underlie the securities (net of fees paid to the issuer or guarantor of the
securities).

     Early repayment of principal on mortgage pass-through securities (arising
from prepayments of principal due to sale of the underlying property,
refinancing, or foreclosure, net of fees and costs which may be incurred) may
expose the funds to a lower rate of return upon reinvestment of principal. Also,
if a security subject to prepayment were purchased at a premium, in the event of
prepayment, the value of the premium would be lost. Like other fixed-income
securities, when interest rates rise, the value of a mortgage-related security
generally will decline; however, when interest rates decline, the value of
mortgage-related securities with prepayment features may not increase as much as
other fixed-income securities.

     Payment of principal and interest on some mortgage pass-through securities
(but not the market value of the securities themselves) may be guaranteed by the
full faith and credit of the U.S. government in the case of securities
guaranteed by the Government National Mortgage Association (GNMA), or guaranteed
by agencies or instrumentalities of the U.S. government in the case of
securities guaranteed by the Federal National Mortgage Association (FNMA) or the
Federal Home Loan Mortgage Corporation (FHLMC), which are supported only by the
discretionary authority of the U.S. government to purchase the agency's
obligations.

     Mortgage pass-through securities created by nongovernmental issuers (such
as commercial banks, savings and loan institutions, private mortgage insurance
companies, mortgage bankers and other secondary market issuers) may be supported
by various forms of insurance or guarantees, including individual loan, title,
pool and hazard insurance and letters of credit, which may be issued by
governmental entities, private insurers, or the mortgage poolers.

     The funds may also invest in collateralized mortgage obligations (CMOs).
CMOs are mortgage-backed securities issued by government agencies;
single-purpose, stand-alone financial subsidiaries; trusts established by
financial institutions; or similar institutions. The funds may buy CMOs that
meet the following criteria:

   o Are collateralized by pools of mortgages in which payment of principal and
     interest of each mortgage is guaranteed by an agency or instrumentality of
     the U.S. government;

   o Are collateralized by pools of mortgages in which payment of principal and
     interest are guaranteed by the issuer, and the guarantee is collateralized
     by U.S. government securities;

   o Are securities in which the proceeds of the issue are invested in mortgage
     securities and payments of principal and interest are supported by the
     credit of an agency or instrumentality of the U.S. government.


                                       10


FORWARD CURRENCY EXCHANGE CONTRACTS AND OPTIONS THEREON

     Some of the securities held by the funds may be denominated in foreign
currencies. Other securities, such as depositary receipts, may be denominated in
U.S. dollars but have a value that is dependent on the performance of a foreign
security, as valued in the currency of its home country. As a result, the value
of a fund's portfolio may be affected by changes in the exchange rate between
foreign currencies and the U.S. dollar, as well as by changes in the market
value of the securities themselves. The performance of foreign currencies
relative to the dollar may be a factor in a fund's overall performance.

     To protect against adverse movements in exchange rates between currencies,
the funds may, for hedging purposes only, enter into forward currency exchange
contracts and buy put and call options relating to interest rate futures
contracts. A forward currency exchange contract obligates the fund to purchase
or sell a specific currency at a future date at a specific price. An option is a
contractual right to acquire a financial asset, such as a security, the
securities of a market index, a foreign currency or a foreign currency exchange
contract, at a specific price at the end of a specified term.

     Each fund may elect to enter into a forward currency exchange contract or
an option thereon with respect to a specific purchase or sale of a security, or
with respect to the fund's portfolio positions generally.

     By entering into a forward currency exchange contract or an option thereon
with respect to the specific purchase or sale of a security denominated in a
foreign currency, the funds can "lock in" an exchange rate between the trade and
settlement dates for that purchase or sale. This practice is sometimes referred
to as "transaction hedging." Each fund may enter into transaction hedging
contracts with respect to all or a substantial portion of its foreign securities
trades.

     When the manager believes that a particular currency may decline in value
compared to the dollar, the funds may enter into forward currency exchange
contracts or options thereon to sell an amount of foreign currency equal to the
value of some or all of a fund's portfolio securities either denominated in, or
whose value is tied to, that currency. This practice is sometimes referred to as
"portfolio hedging." A fund may not enter into a portfolio hedging transaction
where the fund would be obligated to deliver an amount of foreign currency in
excess of the aggregate value of the fund's portfolio securities or other assets
denominated in, or whose value is tied to, that currency.

     The funds will make use of portfolio hedging to the extent deemed
appropriate by the manager. However, it is anticipated that the funds will enter
into portfolio hedges much less frequently than transaction hedges.

     If a fund enters into a forward currency exchange contract or an option
thereon, the fund, when required, will instruct its custodian bank to segregate
cash or liquid high-grade securities in a separate account in an amount
sufficient to cover its obligation under the contract. For options sold, a fund
will segregate cash or liquid high-grade securities equal to the value of the
securities underlying the options unless the options are otherwise secured.
Those assets will be valued at market daily, and if the value of the segregated
securities declines, additional cash or securities will be added so that the
value of the account is not less than the amount of the fund's commitment. At
any given time, no more than 10% of a fund's assets will be committed to a
segregated account in connection with portfolio hedging transactions.

     Predicting the relative future values of currencies is very difficult, and
there is no assurance that any attempt to protect the funds against adverse
currency movements through the use of forward currency exchange contracts will
be successful. In addition, the use of forward currency exchange contracts tends
to limit the

                                       11


potential gains that might result from a positive change in the relationship
between the foreign currency and the U.S. dollar.

PORTFOLIO TURNOVER

     The portfolio turnover rates of the funds are shown in the Financial
Highlights table on page 4 of this Prospectus.

     Investment decisions to purchase and sell securities are based on the
anticipated contribution of the security in question to a 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 and, accordingly, the
annual portfolio turnover rate cannot be accurately predicted.

     The portfolio turnover of the funds may be higher than other investment
companies with similar investment objectives. Higher turnover would generate
correspondingly greater brokerage commissions, which is a cost that the funds
pay directly. Portfolio turnover may also affect the character of capital gains,
if any, realized and distributed by a fund since short-term capital gains are
taxable as ordinary income.

     The manager estimates, pursuant to SEC requirements, that the rate of
portfolio turnover will, generally, not exceed 150% per year.

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 fund's investment policies.

     A repurchase agreement occurs when a fund purchases an interest-bearing
obligation from a bank or broker-dealer registered under the Securities Exchange
Act of 1934 and simultaneously agrees to sell it back on a specified date in the
future (usually less than one week later) at a higher price. The repurchase
price reflects an agreed-upon interest rate during the time the fund's money is
invested in the security and is considered by the staff of the SEC to be a loan
by the fund.

     A fund's risk in connection with repurchase agreements is the ability of
the seller to pay the repurchase price on the repurchase date. If the seller
defaults, the fund may incur costs, delays or losses. Management monitors the
creditworthiness of sellers.

     The funds will enter into repurchase agreements only with those commercial
banks and broker-dealers whose creditworthiness has been reviewed and found
satisfactory by the funds' management pursuant to criteria adopted by the funds'
board of directors.

FUTURES CONTRACTS

     Each fund may enter into domestic and foreign futures contracts. A futures
contract is an agreement to take or make delivery of a financial asset at a
specific price at the end of the contract period. Some futures contracts, such
as market index futures, require settlement in cash based on the difference
between the value of the underlying financial assets at the beginning and at the
end of the contract period. Rather than actually purchasing the specific
financial assets, or the securities of a market index, the manager may purchase
a futures contract, which reflects the value of such underlying securities. For
example, S&P 500 futures reflect the value of the underlying companies that
comprise the S&P 500 Composite Stock Price Index. If the aggregate market value
of the underlying index securities increases or decreases during the contract
period, the value of the S&P 500 futures can be expected to reflect such
increase or decrease. The manager may use index futures to efficiently expose to
the equity markets a portion of a fund's assets that is being held for future
investment opportunities.

     When a fund enters into a futures contract, it must make a deposit of cash
or high-quality debt securities, known as "initial margin," as partial security
for its performance under the contract. As the value of the underlying financial
assets

                                       12


fluctuates, either party to the contract is required to make additional margin
payments, known as "variation margin," to cover any additional obligation it may
have under the contract. Assets set aside by a fund as initial or variable
margin may not be disposed of so long as the fund maintains the contract.

     The funds may not purchase leveraged futures. A fund will deposit in a
segregated account with its custodian bank cash or high-quality debt securities
in an amount equal to the fluctuating market value of the index contracts it has
purchased, less any margin deposited on its position. The funds will only invest
in exchange-traded futures.

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 or S&P 500 futures), 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 S&P 500 Index would
be a permissible investment since each of the funds may invest in the securities
of companies comprising the S&P 500 Index (assuming they otherwise meet the
other requirements for the fund), while 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 of 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:

   o the risk that the underlying security, interest rate, market index or other
     financial asset will not move in the direction the portfolio manager
     anticipates;

   o 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;

   o the risk that adverse price movements in an instrument can result in a loss
     substantially greater than a fund's initial investment; and

   o 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


                                       13


necessary. In addition, the board will review the manager's policy for
investments in derivative securities annually.

WHEN-ISSUED SECURITIES

     Each fund may purchase new issues of securities on a when-issued basis
without limit when, in the opinion of the manager, such purchases will further
the investment objectives of such fund. The price of when-issued securities is
established at the time the commitment to purchase is made. Delivery of and
payment for these securities typically occur 15 to 45 days after the commitment
to purchase. 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. A separate account consisting of cash or
high-quality liquid debt securities in an amount at least equal to the
when-issued commitments will be established and maintained with the custodian.
No income will accrue to the fund prior to delivery.

SHORT SALES

     Each fund may engage in short sales if, at the time of the short sale, the
fund owns or has the right to acquire an equal amount of the security being sold
short at no additional cost. These transactions allow a fund to hedge against
price fluctuations by locking in a sale price for securities it does not wish to
sell immediately.

     A fund may make a short sale 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 and for purposes of satisfying certain tests
applicable to regulated investment companies under the Internal Revenue Code and
Regulations.

RULE 144A SECURITIES

     The funds may, from time to time, purchase 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 buyers 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 Securities and Exchange Commission 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 manager.
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 security
that is illiquid. In such an event, the funds' manager will consider appropriate
remedies to minimize the effect on such fund's liquidity. No fund may invest
more than 15% of its assets in illiquid securities (securities that may not be
sold within seven days at approximately the price used in determining the net
asset value of fund shares).

PERFORMANCE ADVERTISING

     From time to time, the funds may advertise performance data. Fund
performance may be shown by presenting one or more performance measurements,
including cumulative total return or average annual total return. Performance
data

                                       14


may be quoted separately for the Service Class and the other classes offered by
the funds.

     Cumulative total return data is computed by considering all elements of
return, including reinvestment of dividends and capital gains distributions,
over a stated period of time. Average annual total return is determined by
computing the annual compound return over a stated period of time that would
have produced the fund's cumulative total return over the same period if the
fund's performance had remained constant throughout.

     A quotation of yield reflects a fund's income over a stated period of time,
expressed as a percentage of the fund's share price.

     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.

     Yields are calculated according to accounting methods that are standardized
in accordance with SEC rules for all stock and bond funds. Because yield
accounting methods differ from the methods used for other accounting purposes, a
fund's yield may not equal the income paid on your shares or the income reported
in the fund's financial statements.

     Each fund also may include in advertisements data comparing performance
with the performance of non-related investment media, published editorial
comments and performance rankings compiled by independent organizations (such as
Lipper Analytical Services) and publications that monitor the performance of
mutual funds. Performance information may be quoted numerically or may be
presented in a table, graph or other illustration. In addition, fund performance
may be compared to well-known indices of market performance including the
Standard & Poor's (S&P) 500 Index and the Dow Jones Industrial Average. The
performance of a fund may also be compared, on a relative basis, to the other
funds in our fund family. This relative comparison, which may be based upon
historical or expected fund performance, volatility or other fund
characteristics, may be presented numerically, graphically or in text. The
performance of a fund may also be combined or blended with other funds in our
fund family, and that combined or blended performance may be compared to the
same indices to which individual funds may be compared.

     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.


                                       15


           HOW TO INVEST WITH TWENTIETH CENTURY AND THE BENHAM GROUP
- --------------------------------------------------------------------------------

     The following section explains how to purchase, exchange and redeem Service
Class shares of the funds offered by this Prospectus.

HOW TO PURCHASE AND
SELL TWENTIETH CENTURY FUNDS

     One or more of the funds offered by this Prospectus is available as an
investment option under your employer-sponsored retirement or savings plan or
through or in connection with a program, product or service offered by a
financial intermediary, such as a bank, broker dealer or insurance company.
Since all records of your share ownership are maintained by your plan sponsor,
plan recordkeeper, or other financial intermediary, all orders to purchase,
exchange and redeem shares must be made through your employer or other financial
intermediary, as applicable.

     If you are purchasing through a retirement or savings plan, the
administrator of your plan or your employee benefits office can provide you with
information on how to participate in your plan and how to select Twentieth
Century funds as an investment option.

     If you are purchasing through a financial intermediary, you should contact
your service representative at the financial intermediary for information about
how to select Twentieth Century funds.

     If you have questions about a fund, see "Investment Policies of the Funds,"
page 5, or call our Investors Line at 1-800-345-3533.

     Orders to purchase shares are effective on the day we receive payment. See
"When Share Price is Determined," page 18.

     We may discontinue offering shares generally in the funds (including any
class of shares of a fund) or in any particular state without notice to
shareholders.

HOW TO EXCHANGE YOUR
INVESTMENT FROM ONE TWENTIETH
CENTURY FUND TO ANOTHER

     Your plan or program may permit you to exchange your investment in the
shares of a fund for shares of another fund in our family. See your plan
administrator, employee benefits office or financial intermediary for details on
the rules in your plan governing exchanges.

     Exchanges are made at the respective net asset values, next computed after
receipt of the exchange instruction by us. If in any 90-day period, the total of
the exchanges and redemptions from the account of any one plan participant or
financial intermediary client exceeds the lesser of $250,000 or 1% of a fund's
assets, further exchanges may be subject to special requirements to comply with
our policy on large equity fund redemptions. See "Special Requirements for Large
Redemptions," page 17.

HOW TO REDEEM SHARES

     Subject to any restrictions imposed by your employer's plan or financial
intermediary's program, you can sell ("redeem") your shares through the plan or
financial intermediary at their net asset value. Your plan administrator,
trustee, or financial intermediary or other designated person must provide us
with redemption instructions. The shares will be redeemed at the net asset value
next computed after receipt of the instructions in good order. See "When Share
Price Is Determined," page 18. If you have any questions about how to redeem,
contact your plan administrator, employee benefits office, or service
representative at your financial intermediary, as applicable.


                                       16


SPECIAL REQUIREMENTS FOR
LARGE REDEMPTIONS

     We have elected to be governed by Rule 18f-1 under the Investment Company
Act, which obligates each fund to redeem shares in cash, with respect to any one
participant account during any 90-day period, up to the lesser of $250,000 or 1%
of the assets of the fund. Although redemptions in excess of this limitation
will also normally be paid in cash, we reserve the right to honor these
redemptions by making payment in whole or in part in readily marketable
securities (a "redemption-in-kind"). If payment is made in securities, the
securities will be selected by the fund, will be valued in the same manner as
they are in computing the fund's net asset value and will be provided to the
redeeming plan participant or financial intermediary in lieu of cash without
prior notice.

     If you expect to make a large redemption and would like to avoid any
possibility of being paid in securities, you may do so by providing 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.
Receipt of your instruction 15 days prior to the transaction provides the fund
with sufficient time to raise the cash in an orderly manner to pay the
redemption and thereby minimizes the effect of the redemption on the fund and
its remaining shareholders.

     Despite its 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.

TELEPHONE SERVICES

INVESTORS LINE

     You may reach one of our Institutional Service Representatives by calling
our Investors Line at 1-800-345-3533. On our Investors Line you may request
information about our funds and a current prospectus, or get answers to any
questions that you may have about the funds and the services we offer.

AUTOMATED INFORMATION LINE

     In addition to reaching us on our Investors Line, you may also reach us by
telephone on our Automated Information Line, 24 hours a day, seven days a week,
at 1-800-345-8765. By calling the Automated Information Line you may listen to
fund prices, yields and total return figures.


                                       17


                     ADDITIONAL INFORMATION YOU SHOULD KNOW
- --------------------------------------------------------------------------------

SHARE PRICE

WHEN SHARE PRICE IS DETERMINED

     The price of your shares is also referred to as their net asset value. Net
asset value is determined by calculating the total value of a fund's assets,
deducting total liabilities and dividing the result by the number of shares
outstanding. Net asset value is determined at the close of regular trading on
each day that the New York Stock Exchange is open.

     Investments and requests to redeem or exchange shares will receive the
share price next determined after we receive your investment, redemption or
exchange request. For example, investments and requests to redeem or exchange
shares received by us or one of our authorized agents before the close of
business on the New York Stock Exchange, usually 3 p.m. Central time, are
effective on, and will receive the price determined, that day as of the close of
the Exchange. Investment, redemption and exchange requests received thereafter
are effective on, and receive the price determined, as of the close of the
Exchange on the next day the Exchange is open.

     Investments are considered received only when your check or wired funds are
received by us. Wired funds are considered received on the day they are
deposited in our bank account if your telephone call is received before the
close of business on the Exchange and the money is deposited that day.

     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 and to make payment
for any purchase transactions in accordance with the fund's procedures or any
contractual arrangement with the funds or the funds' distributor in order for
you to receive that day's price.

HOW SHARE PRICE IS DETERMINED

     The valuation of assets for determining net asset value may be summarized
as follows:

     Portfolio securities of each 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
price 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.

     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 converted 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, which was likely to materially change the
net asset value, then that

                                       18


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 Exchange is not
open and on which a 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 a fund's portfolio may be affected on days when shares of the fund may
not be purchased or redeemed.

WHERE TO FIND INFORMATION
ABOUT SHARE PRICE

     The net asset values of the Investor Class of the funds will be published
in leading newspapers daily upon meeting the minimum fund size and number of
shareholders for each listing. The net asset value of the Service Class of each
fund may be obtained by calling us.

DISTRIBUTIONS

     Distributions from net investment income are declared and paid quarterly by
Strategic Allocation: Conservative and annually by Strategic Allocation:
Moderate and Strategic Allocation: Aggressive. Distributions from net realized
securities gains, if any, are declared and paid annually, usually in December,
but the funds may make distributions on a more frequent basis to comply with the
distribution requirements of the Internal Revenue Code, in all events in a
manner consistent with the provisions of the Investment Company Act.

     Participants in employer-sponsored retirement or savings plans must
reinvest all distributions. For shareholders investing in taxable accounts,
distributions will be reinvested unless you elect to receive them in cash.
Distributions of less than $10 generally will be reinvested. Distributions made
shortly after a purchase, made by check or ACH, may be held up to 15 days. You
may elect to have distributions on shares of Individual Retirement Accounts and
403(b) plans paid in cash only if you are at least 591/2 years old or
permanently and totally disabled. Distribution checks normally are mailed within
seven days after the record date.

     The board of directors may elect not to distribute capital gains in whole
or in part to take advantage of loss carryovers.

     A distribution on shares of a fund does not increase the value of your
shares or your total return. At any given time, the value of your shares
includes the undistributed net gains, if any, realized by the fund on the sale
of portfolio securities and undistributed dividends and interest received, less
fund expenses.

     Because undistributed gains and dividends are included in the value of your
shares prior to distribution, when they are distributed, the value of your
shares will be reduced by the amount of the distribution. If you buy your shares
through a taxable account just before the distribution, you will pay the full
price for your shares and then receive a portion of the purchase price back as a
taxable distribution. See "Taxes," this page.

TAXES

     Each fund has elected to be taxed as a regulated investment company under
Sub-chapter M of the Internal Revenue Code, which means that to the extent its
income is distributed to shareholders, it pays no income taxes.

TAX-DEFERRED ACCOUNTS

     If the Service Class shares are purchased through tax-deferred accounts,
such as a qualified employer-sponsored retirement or savings plan, income and
capital gains distributions paid by the funds will generally not be subject to
current taxation, but will accumulate in your account


                                       19


under the plan on a tax-deferred basis.

     Employer-sponsored retirement and savings plans are governed by complex tax
rules. If you elect to participate in your employer's plan, consult your plan
administrator, your plan's summary plan description, or a professional tax
advisor regarding the tax consequences of participation in the plan,
contributions to, and withdrawals or distributions from the plan.

TAXABLE ACCOUNTS

     If the Service Class shares are purchased through taxable accounts,
distributions of net investment income and net short-term capital gains are
taxable to you as ordinary income. Distributions from net long-term capital
gains are taxable as long-term capital gains regardless of the length of time
you have held the shares on which such distributions are paid. 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 distribution of long-term capital gain to you with respect to such
shares.

     Dividends and interest received by the funds on foreign securities, and, in
limited circumstances capital gains realized by the funds upon the sale of such
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.

     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) remains the same. 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. See "Distributions," page 19.

     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.

     Distributions made to taxable accounts also may 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 adviser
about the tax status of such distributions in your own state.

     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. THIS CHARGE IS NOT
REFUNDABLE.

     Redemption of shares of a fund (including redemptions made in an exchange
transaction)

                                       20


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 generally will be long term if shareholders have held
such shares for a period of more than one year. 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.

MANAGEMENT

INVESTMENT MANAGEMENT

     Under the laws of the State of Maryland, the board of directors is
responsible for managing the business and affairs of the funds. Acting pursuant
to an investment management agreement entered into with the funds, Investors
Research Corporation ("Investors Research") serves as the investment manager of
the funds. Its principal place of business is Twentieth Century Tower, 4500 Main
Street, Kansas City, Missouri, 64111. Investors Research has been providing
investment management services to investment companies and institutional clients
since 1958.

     In June 1995, Twentieth Century Companies, Inc. ("TCC"), the parent of
Investors Research, acquired Benham Management International, Inc. In the
acquisition, Benham Management Corporation ("BMC"), the investment adviser to
the Benham Group of Mutual Funds, became a wholly owned subsidiary of TCC.
Certain employees of BMC provide investment management services to Twentieth
Century funds, while certain Twentieth Century employees provide investment
management services to Benham funds.

     Investors Research supervises and manages the investment portfolio of
Twentieth Century and directs the purchase and sale of its investment
securities. Investors Research utilizes a team of portfolio managers, assistant
portfolio managers and analysts acting together to manage the assets of the
funds. The team meets regularly to review portfolio holdings and to discuss
purchase and sale activity. The team adjusts holdings in the funds' portfolios
and the funds' asset mix as it deems appropriate in pursuit of the funds'
investment objectives. Individual portfolio manager members of the team may also
adjust portfolio holdings of the funds or of sectors of the funds as necessary
between team meetings.

     The portfolio manager members of the teams managing the funds described in
this Prospectus and their work experience for the last five years are as
follows:

     CHRISTOPHER K. BOYD, Vice President and Portfolio Manager, joined Twentieth
Century in March 1988 as an Investment Analyst, a position he held until
December 1990. At that time he was promoted to Assistant Portfolio Manager, and
then was promoted to Portfolio Manager in December 1992. He is a member of the
team that manages Growth Investors and Ultra Investors.

     C. CASEY COLTON, a Portfolio Manager for BMC, joined BMC in 1990 as a
Municipal Analyst. Mr. Colton was promoted to Portfolio Manager in 1995 and
co-manages the Benham GNMA Income Fund.

     PHILLIP N. DAVIDSON, Vice President and Portfolio Manager, joined Twentieth
Century in September 1993 as a Portfolio Manager. Prior to joining Twentieth
Century, Mr. Davidson served as an investment manager for Boatmen's Trust
Company in St. Louis, Missouri.

     GLENN A. FOGLE, Vice President and Portfolio Manager, joined Twentieth
Century in September 1990 as an Investment Analyst, a position he held until
March 1993. At that time he was promoted to Portfolio Manager. He is a member of
the team that manages Vista Investors and Giftrust Investors.


                                       21


     NORMAN E. HOOPS, Senior Vice President and Fixed Income Portfolio Manager,
joined Twentieth Century as Vice President and Portfolio Manager in November
1989. In April 1993, he became Senior Vice President. He is a member of the team
that manages Limited-Term Bond, Intermediate-Term Bond, Long-Term Bond and the
fixed income portion of Balanced Investors.

     DAVID SCHROEDER, Vice President and Portfolio Manager for BMC, joined BMC
in July 1990. Mr. Schroeder has primary responsibility for the day-to-day
operations of the Benham Treasury Note, Benham Short-Term, and Benham Long-Term
Funds. He also manages Benham Target Maturities Trust.

     JEFFREY R. TYLER, Senior Vice President and Portfolio Manager for BMC,
joined BMC in January 1988 as a Portfolio Manager. Mr. Tyler supervises the team
of other Portfolio Managers who assist in the management of the various
investment categories of the funds. Mr. Tyler also co-manages the Benham GNMA
Income Fund. He also has primary responsibility for the day-to-day operations of
the Benham Capital Manager Fund and oversees the portfolio manager's operation
of the Benham European Government Bond Fund.

     THEODORE J. TYSON, Vice President and Portfolio Manager, joined Investors
Research in 1988 and has been a member of the International Equity and
International Emerging Growth team since its inception in 1991.

     PETER A. ZUGER, Vice President and Portfolio Manager, joined Twentieth
Century in June 1993 as a Portfolio Manager. Prior to joining Twentieth Century,
Mr. Zuger served as an investment manager in the Trust Department of NBD Bancorp
in Detroit, Michigan.

     The activities of Investors Research are subject only to directions of the
funds' board of directors. Investors Research pays all the expenses of the funds
except brokerage, taxes, interest, fees and expenses of the non-interested
person directors (including counsel fees) and extraordinary expenses.

     For the services provided to the funds, Investors Research receives an
annual fee of 0.75% of average net assets up to $1 billion and 0.65% of average
net assets in excess of $1 billion for Strategic Allocation: Conservative, 0.85%
of average net assets up to $1 billion and 0.75% of average net assets in excess
of $1 billion for Strategic Allocation: Moderate, and 0.95% of average net
assets up to $1 billion and 0.85% of average net assets in excess of $1 billion
for Strategic Allocation: Aggressive. On the first business day of each month,
each fund pays a management fee to the manager for the previous month at the
specified rate. The fee for the previous month is calculated by multiplying the
applicable fee for such fund by the aggregate average daily closing value of
each fund's net assets during the previous month 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 fees paid by the funds to Investors Research may be higher
than those paid by many investment companies. However, most if not all of such
companies also pay, in addition, certain of their own expenses, while virtually
all of the funds' expenses, except as specified above, are paid by Investors
Research.

CODE OF ETHICS

     The funds and Investors Research have adopted a Code of Ethics, which
restricts personal investing practices by employees of Investors Research and
its affiliates. Among other provisions, the Code of Ethics requires that
employees with access to information about the purchase or sale of securities in
the funds' portfolios obtain preclearance before executing personal trades. With
respect to portfolio managers and other investment personnel, the Code of Ethics
prohibits acquisition of securities in an initial public offering, as well as
profits derived from the purchase and sale of the same security within 60
calendar days. These provisions are designed to ensure that the


                                       22


interests of fund shareholders come before the interests of the people who
manage those funds.

TRANSFER AND
ADMINISTRATIVE SERVICES

     Twentieth Century Services, Inc., 4500 Main Street, Kansas City, Missouri,
64111, acts as transfer, administrative services and dividend paying agent for
Twentieth Century. It provides facilities, equipment and personnel to Twentieth
Century and is paid for such services by Investors Research.

     From time to time, special services may be offered to shareholders who
maintain higher share balances in the Twentieth Century 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 Investors Research.

     Investors Research and Twentieth Century Services, Inc., are both wholly
owned by Twentieth Century Companies, Inc. James E. Stowers Jr., chairman of the
board of directors of the funds, controls Twentieth Century Companies by virtue
of his ownership of a majority of its common stock.

DISTRIBUTION OF FUND SHARES

     The funds' shares are distributed by Twentieth Century Securities, Inc.
(the "Distributor"), a registered broker-dealer and an affiliate of the funds'
investment manager. Investors Research pays all expenses for promoting sales of,
and distributing the Service Class of, the fund shares offered by this
Prospectus. The Service Class of shares does not pay any commissions or other
fees to the Distributor or to any other broker dealers or financial
intermediaries in connection with the distribution of fund shares.

SERVICE FEES

     Certain recordkeeping and administrative services that are provided by the
funds' transfer agent for Investor Class shareholders may be performed by
insurance companies, retirement and pension plan administrators and
recordkeepers for retirement plans using Service Class shares as a funding
medium, by broker dealers for their customers investing in shares of the funds,
by sponsors of multi mutual fund no (or low) transaction fee programs and other
financial intermediaries.

     The funds' boards of directors have adopted a Shareholder Services Plan
with respect to the Service Class shares of each fund. Under the Plan, each fund
pays a shareholder services fee of 0.25% annually of the aggregate average daily
net assets of the funds' Service Class shares for the purpose of paying the
costs and expenses incurred by such financial intermediaries in providing such
services. The Distributor enters into contracts with each financial intermediary
to make such shares available through such plans or programs and for the
provision of such services.

     The Shareholder Services Plan has been adopted and will be administered in
accordance with the requirements of Rule 12b-1 under the 1940 Act. For
additional information about the Plan and its terms, see "Shareholder Services
Plan" in the Statement of Additional Information. Fees paid pursuant to the Plan
may be paid for shareholder services and the maintenance of accounts and
therefore may constitute "service fees" for purposes of applicable NASD rules.

FURTHER INFORMATION
ABOUT TWENTIETH CENTURY

     Twentieth Century Strategic Asset Allocations, Inc. was organized as a
Maryland corporation on April 4, 1994.

     The corporation is a diversified, open-end management investment company
whose shares were first offered for sale February 15, 1996. Its


                                       23


business and affairs are managed by its officers under the direction of its
board of directors.

     The principal office of Twentieth Century is Twentieth Century Tower, 4500
Main Street, P.O. Box 419385, Kansas City, Missouri, 64141-6385. All inquiries
may be made by mail to that address, or by phone to 1-800-345-3533.
(For international callers: 816-531-5575.)

     Twentieth Century Strategic Asset Allocations, Inc. issues three series of
$0.01 par value shares, Strategic Allocation: Conservative, Strategic
Allocation: Moderate and Strategic Allocation: Aggressive. The assets belonging
to each series of shares are held separately by the custodian.

     Each of the funds described in this Prospectus offers three classes of
shares: an Investor Class, a Service Class, and an Advisor Class. The shares
offered by this Prospectus are Service Class shares and have no up-front charges
or commissions.

     The Investor Class is primarily made available to retail investors. The
Advisor Class is primarily offered to institutional investors or through
institutional distribution channels, such as employer-sponsored retirement plans
or through banks, broker dealers, insurance companies or other financial
intermediaries. The other classes have different fees, expenses, and/or minimum
investment requirements than the Service Class. Different fees and expenses will
affect performance. For additional information concerning the Investor Class of
shares, call one of our retail Investor Services Representatives at
1-800-345-2021. For information concerning the Advisor Class of shares, call one
of our Institutional Service Representatives 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, and (d) each class
may have different exchange privileges.

     Each share, irrespective of series or class, is entitled to one vote for
each dollar of net asset value applicable to such share on all questions, except
for those matters that must be voted on separately by the series or class of
shares affected. Matters affecting only one series or class are voted upon only
by that series or class.

     Shares have non-cumulative voting rights, which means that the holders of
more than 50% of the shares voting for the election of directors can elect all
of the directors if they choose to do so, and in such event the holders of the
remaining shares will not be able to elect any person or persons to the board of
directors.

     Unless required by the Investment Company Act, it will not be necessary for
the funds to hold annual meetings of shareholders. As a result, shareholders may
not vote each year on the election of directors or the appointment of auditors.
However, pursuant to the funds' bylaws, the holders of at least 10% of the votes
entitled to be cast may request the funds to hold a special meeting of
shareholders. We will assist in the communication with other shareholders.

     WE RESERVE THE RIGHT TO CHANGE ANY OF OUR POLICIES, PRACTICES AND
PROCEDURES DESCRIBED IN THIS PROSPECTUS, INCLUDING THE STATEMENT OF ADDITIONAL
INFORMATION, WITHOUT SHAREHOLDER APPROVAL EXCEPT IN THOSE INSTANCES WHERE
SHAREHOLDER APPROVAL IS EXPRESSLY REQUIRED.


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                                       27


                                                        TWENTIETH CENTURY
                                                      ASSET ALLOCATION FUNDS

                                                    SERVICE CLASS PROSPECTUS

                                                        SEPTEMBER 3, 1996
TWENTIETH CENTURY MUTUAL FUNDS
and THE BENHAM GROUP
- -------------------------------------------

P.O. BOX 419385
KANSAS CITY, MISSOURI
64141-6385
- -------------------------------------------
Person-to-person assistance:
1-800-345-3533 or 816-531-5575
- -------------------------------------------
Automated Information Line:
1-800-345-8765
- -------------------------------------------
Telecommunications Device for the Deaf:
1-800-345-1833 or 816-753-0700
- -------------------------------------------
Fax: 816-340-4655
- -------------------------------------------
Internet: http://www.twentieth-century.com
- -------------------------------------------
                                                         TWENTIETH CENTURY
                                                          STRATEGIC ASSET
                                                            ALLOCATIONS
- --------------------------------------------------------------------------------
SH-BKT-5420    [recycled logo]
9608               Recycled

<PAGE>
                               TWENTIETH CENTURY
                                STRATEGIC ASSET
                               ALLOCATIONS, INC.
                      STATEMENT OF ADDITIONAL INFORMATION
                               SEPTEMBER 3, 1996
 -------------------------------------------------------------------------------

  This statement is not a Prospectus but should be read in conjunction with the
             current Prospectus of Twentieth Century Strategic Asset
                  Allocations, Inc., dated September 3, 1996.
               Please retain this document for future reference.

  To obtain the Prospectus, call Twentieth Century toll-free at 1-800-345-2021
       (816-531-5575 for international calls), or write P.O. Box 419200,
                       Kansas City, Missouri 64141-6200.


                               TABLE OF CONTENTS

                                                                   Page

       Investment Objectives of the Funds                            2 
       Investment Restrictions                                       2 
       Forward Currency Exchange Contracts                           3 
       Futures Contracts                                             4 
       An Explanation of Fixed Income Securities Ratings             5 
       Investing in Emerging Markets                                 7 
       Short Sales                                                   8 
       Portfolio Turnover                                            8 
       Officers and Directors                                        9 
       Management                                                   11 
       Custodians                                                   12 
       Independent Auditors                                         12 
       Capital Stock                                                12 
       Multiple Class Structure                                     13 
       Taxes                                                        15 
       Brokerage                                                    16 
       Performance Advertising                                      17 
       Redemptions in Kind                                          18 
       Holidays                                                     18 
       Financial Statements                                         18 
       
- --------------------------------------------------------------------------------

<PAGE>


INVESTMENT OBJECTIVES
OF THE FUNDS

     The investment objective of each series of shares of Twentieth Century
Strategic Asset Allocations, Inc. is described on the front cover page of the
Prospectus. In seeking to achieve its objective, a fund must conform to certain
policies, some of which are designated in the Prospectus or in this statement of
additional information as "fundamental" and cannot be changed except with the
approval of the shareholders entitled to cast a majority of the outstanding
votes of the fund as defined in the Investment Company Act.

     The following paragraph is also a statement of fundamental policy with
respect to selection of investments:

     In general, within the restrictions outlined herein, each series has broad
powers with respect to investing funds or holding them uninvested. Investments
are varied according to what is judged advantageous under changing economic
conditions. It is the policy of Twentieth Century 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.

     Neither the Securities and Exchange Commission nor any other federal or
state agency participates in or supervises the management of the funds or their
investment practices or policies.

INVESTMENT RESTRICTIONS

     Fundamental policies that may be changed only with shareholder approval
provide that no series of shares:

(1)  Shall, with regard to 75% of its portfolio, purchase the security of any
     one issuer if such purchase would cause more than 5% of the fund's assets
     at market to be invested in the securities of such issuer, except U.S.
     government securities, or if the purchase would cause more than 10% of the
     outstanding voting securities of any one issuer to be held in a fund's
     portfolio.

(2)  Shall invest for control or for management or concentrate its investment in
     a particular company or a particular industry. No more than 25% of the
     assets of a fund, exclusive of cash and U.S. government securities, will be
     invested in securities of any one industry.

(3)  Shall buy securities on margin or sell short (unless it owns or by virtue
     of its ownership of other securities has the right to obtain securities
     equivalent in kind and amount to the securities sold without additional
     cost); however, a fund may make margin deposits in connection with the use
     of any financial instrument or any transaction in securities permitted by
     its fundamental policies.

(4)  Shall issue any senior security.

(5)  Shall underwrite any securities.

(6)  Shall invest more than 15% of its assets in illiquid investments.

(7)  Shall lend its portfolio securities except to unaffiliated persons and
     subject to the rules and regulations adopted under the Investment Company
     Act. No such rules and regulations have been issued, but it is Twentieth
     Century's policy that such loans must be secured continuously by cash
     collateral maintained on a current basis in an amount at least equal to the
     market value of the securities loaned or by irrevocable letters of credit.
     During the existence of the loan, a fund must continue to receive the
     equivalent of the interest and dividends paid by the issuer on the
     securities loaned and interest on the investment of the collateral; the
     fund must have the right to call the loan and obtain the securities loaned
     at any time on five days' notice, including the right to call the loan to
     enable the fund to vote the securities. To comply with the regulations of
     certain state securities administrators, such loans may not exceed
     one-third of the fund's net assets valued at market.

(8)  Shall borrow any money, except in an amount not in excess of 5% of the
     total assets of the series and then only for emergency


                                       2


     and extraordinary purposes. Note: This investment restriction does not
     prohibit escrow and collateral arrangements in connection with investment
     in futures contracts and related options by a fund.

(9)  Shall purchase or sell real estate, except that a fund may purchase
     securities of issuers that deal in real estate and may purchase securities
     that are secured by interests in real estate.

     The Investment Company Act imposes certain additional restrictions upon
acquisition by the fund of securities issued by insurance companies, brokers,
dealers, underwriters or investment advisers, and upon transactions with
affiliated persons as therein defined. It also defines and forbids the creation
of cross and circular ownership.

     To comply with the requirements of state security administrators, Twentieth
Century may, from time to time, agree to additional investment restrictions. For
example, the fund has agreed not to invest in oil, gas or other mineral leases,
or in warrants, except that a fund may purchase securities with warrants
attached. In addition, the fund will not invest in puts, calls, straddles,
spreads or any combination thereof (other than hedging positions or positions
covered by cash or securities). These types of restrictions are not fundamental
policies and may be adopted, revised or withdrawn as required or permitted by
the various state securities administrators.

FORWARD CURRENCY
EXCHANGE CONTRACTS

     Each fund conducts its 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 currency exchange contracts
("forward contracts") to purchase or sell foreign currencies.

     Each fund expects to use forward contracts under two circumstances:

(1)  When the manager 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 manager 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
and the subject foreign currency.

     Under the second circumstance, when the manager 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 forward 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


                                       3


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 a short-term hedging
strategy is highly uncertain. The manager does not intend to enter into such
contracts on a regular basis. Normally, consideration of the prospect for
currency parities will be incorporated into the long-term investment decisions
made with respect to overall diversification strategies. However, the manager
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.

FUTURES CONTRACTS

     As described in the Prospectus, each fund may enter into futures contracts.
Unlike when a fund purchases securities, no purchase price for the underlying
securities is paid by the fund at the time it purchases a futures contract. When
a futures contract is entered into, both the buyer and seller of the contract
are required to deposit with a futures commission merchant ("FCM") cash or
high-grade debt securities in an amount equal to a percentage of the contract's
value, as set by the exchange on which the contract is traded. This amount is
known as "initial margin" and is held by the fund's custodian for the benefit of
the FCM in the event of any default by the fund in the payment of any future
obligations.

     The value of a futures contract is adjusted daily to reflect the
fluctuation of the value of the underlying securities. This is a process known
as marking the contract to market. If the value of a party's position declines,
that party is required to make additional "variation margin" payments to the FCM
to settle the change in value. The party that has a gain is generally entitled
to receive all or a portion of this amount.

     The funds maintain from time to time a percentage of their assets in cash
or high-grade liquid securities to provide for redemptions or to hold for future
investment in securities consistent with the funds' investment objectives. The
funds may enter into index futures contracts as an efficient means to expose the
funds' cash position to the domestic equity market. The manager believes that
the purchase of futures contracts is an efficient means to effectively be fully
invested in equity securities.

     The funds intend to comply with guidelines of eligibility for exclusion
from the definition of the term "commodity pool operator" adopted by the
Commodity Futures Trading Commission ("CFTC") and the National Futures
Association, which regulate trading in the futures markets. To do so, the
aggregate initial margin required to establish such positions may not exceed 5%
of the fair market value of a fund's net assets, after taking into account
unrealized profits and unrealized losses on any contracts it has entered into.

     The principal risks generally associated with the use of futures include:

   o the possible absence of a liquid secondary market for any particular
     instrument may make it difficult or impossible to close out a position when
     desired (liquidity risk);


                                       4


   o the risk that the counter party to the contract may fail to perform its
     obligations or the risk of bankruptcy of the FCM holding margin deposits
     (counter-party risk);

   o the risk that the securities to which the futures contract relates may go
     down in value (market risk); and

   o adverse price movements in the underlying securities can result in losses
     substantially greater than the value of a fund's investment in that
     instrument because only a fraction of a contract's value is required to be
     deposited as initial margin (leverage risk); provided, however, that the
     funds may not purchase leveraged futures, so there is no leverage risk
     involved in the funds' use of futures.

     A liquid secondary market is necessary to close out a contract. The funds
may seek to manage liquidity risk by investing in exchange-traded futures.
Exchange-traded futures pose less risk that there will not be a liquid secondary
market than privately negotiated instruments. Through their clearing
corporations, the futures exchanges guarantee the performance of the contracts.

     Futures contracts are generally settled within a day from the date they are
closed out, as compared to three days for most types of equity securities. As a
result, futures contracts can provide more liquidity than an investment in the
actual underlying securities. Nevertheless, there is no assurance that a liquid
secondary market will exist for any particular futures contract at any
particular time. Liquidity may also be influenced by an exchange-imposed daily
price fluctuation limit, which halts trading if a contract's price moves up or
down more than the established limit on any given day. On volatile trading days
when the price fluctuation limit is reached, it may be impossible for a fund to
enter into new positions or close out existing positions. If the secondary
market for a futures contract is not liquid because of price fluctuation limits
or otherwise, a fund may not be able to promptly liquidate unfavorable futures
positions and potentially could be required to continue to hold a futures
position until liquidity in the market is re-established. As a result, such
fund's access to other assets held to cover its futures positions also could be
impaired until liquidity in the market is re-established.

     The funds manage counter-party risk by investing in exchange-traded index
futures. In the event of the bankruptcy of the FCM that holds margin on behalf
of a fund, that fund may be entitled to the return of margin owed to such fund
only in proportion to the amount received by the FCM's other customers. The
manager will attempt to minimize the risk by monitoring the creditworthiness of
the FCMs with which the funds do business.

AN EXPLANATION OF FIXED
INCOME SECURITIES RATINGS

     As described in the Prospectus, each fund will invest a portion of its
assets in fixed income securities. The fixed income securities that comprise
part of a fund's bond portfolio will primarily be limited to investment grade
obligations, provided, that Strategic Allocation: Moderate may invest up to 5%
of its assets, and Strategic Allocation: Aggressive may invest up to 10% of its
assets, in high yield securities. In addition, each fund may invest a portion of
its equity portfolio in convertible securities, which may be rated below
investment grade (but not below B- by S&P or B3 by Moody's).

     Fixed income securities ratings provide the investment manager with current
assessment of the credit rating of an issuer with respect to a specific fixed
income security. The following is a description of the rating categories
utilized by the rating services referenced in the Prospectus disclosure:

     The following summarizes the ratings used by Standard & Poor's Corporation
("S&P") for bonds:

     AAA--This is the highest rating assigned by S&P to a debt obligation and
     indicates an extremely strong capacity to pay interest and repay principal.

     AA--Debt rated AA is considered to have a very strong capacity to pay
     interest and repay principal and differs from AAA issues only to a small
     degree.

                                       5


     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--Debt rated BBB 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--Debt rated BB 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, which could
     lead to inadequate capacity to meet timely interest and principal payments.
     The BB rating category is also used for debt subordinated to senior debt
     that is assigned an actual or implied BBB- rating.

     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 or BB- rating.

     CCC--Debt rated CCC 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 rating
     category is also used for debt subordinated to senior debt that is assigned
     an actual or implied B or B- rating.

     CC--The rating CC typically is applied to debt subordinated to senior debt
     that is assigned an actual or implied CCC rating.

     C--The rating C typically is applied to debt subordinated to senior debt
     that is assigned an actual or implied CCC- 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--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 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.

     The following summarizes the ratings used by Moody's Investors Service,
Inc. ("Moody's") for bonds:

     Aaa--Bonds that are rated Aaa are judged to be of the best quality. They
     carry the smallest degree of investment risk and are generally referred to
     as "gilt edge." Interest payments are protected by a large or exceptionally
     stable margin and principal is secure. While the various protective
     elements are likely to change, such changes as can be visualized are most
     unlikely to impair the fundamentally strong position of such issues.

     Aa--Bonds that are rated Aa are judged to be of high quality by all
     standards. Together with the Aaa group they comprise what are generally
     known as high-grade bonds. They are rated lower than the best bonds because
     margins of protection may not be as large as in Aaa securities, or
     fluctuation of protective elements may be of greater amplitude, or


                                       6


     there may be other elements present that make the long-term risk appear 
     somewhat larger than the Aaa securities.

     A--Bonds that are rated A possess many favorable investment attributes and
     are to be considered as upper-medium-grade obligations. Factors giving
     security to principal and interest are considered adequate, but elements
     may be present that suggest a susceptibility to impairment some time in the
     future.

     Baa--Bonds that are rated Baa are considered as medium-grade obligations
     (i.e., they are neither highly protected nor poorly secured). Interest
     payments and principal security appear adequate for the present but certain
     protective elements may be lacking or may be characteristically unreliable
     over any great length of time. Such bonds lack outstanding investment
     characteristics and, in fact, have speculative characteristics as well.

     Ba--Bonds that are rated Ba are judged to have speculative elements; their
     future cannot be considered as well-assured. Often the protection of
     interest and principal payments may be very moderate and thereby not well
     safeguarded during both good and bad times in the future. Uncertainty of
     position characterizes bonds in this class.

     B--Bonds that are rated B generally lack characteristics of the desirable
     investment. Assurance of interest and principal payments or of maintenance
     of other terms of the contract over any long period of time may be small.

     Caa--Bonds that are rated Caa are of poor standing. Such issues may be in
     default or there may be present elements of danger with respect to
     principal or interest.

     Ca--Bonds that are rated Ca represent obligations that are speculative in a
     high degree. Such issues are often in default or have other marked
     shortcomings.

     C--Bonds that are rated C are the lowest-rated class of bonds, and issues
     so rated can be regarded as having extremely poor prospects of ever
     attaining any real investment standing.

     Moody's applies numerical modifiers 1, 2 and 3 in each generic rating
category from Aa through B. The modifier 1 indicates that the bond being rated
ranks in the higher end of its generic rating category; the modifier 2 indicates
a mid-range ranking; and the modifier 3 indicates a ranking in the lower end of
that generic rating category.

     In the event any of a fund's fixed income securities are downgraded from
one category to another by a securities ratings agency, the manager intends to
evaluate the reasons for such downgrade and other available information
regarding the issuer and will take action it deems appropriate regarding whether
or not to continue holding such securities.

INVESTING IN EMERGING MARKETS

     Strategic Allocation: Moderate and Strategic Allocation: Aggressive may
invest a portion of their international holdings in securities of issuers in
emerging market countries. Investing in securities of issuers in emerging market
countries involves exposure to significantly higher risk than investing in
countries with developed markets. Emerging market countries may have economic
structures that are generally less diverse and mature, and political systems
that can be expected to be less stable than those of developed countries.

     Securities prices in emerging market countries can be significantly more
volatile than in developed countries, reflecting the greater uncertainties of
investing in lesser developed markets and economies. In particular, emerging
market countries may have relatively unstable governments, and may present the
risk of nationalization of businesses, expropriation confiscatory taxation or in
certain instances, reversion to closed-market, centrally planned economics. Such
countries may also have less protection of property rights than developed
countries.

     The economies of emerging market countries may be predominantly based on
only a few industries or may be dependent on revenues from


                                       7


particular commodities or on international aid of developmental assistance, may
be highly vulnerable to changes in local or global trade conditions, and may
suffer from extreme and volatile debt burdens or inflation rates. In addition,
securities markets in emerging market countries may trade a small number of
securities and may be unable to respond effectively to increases in trading
volume, potentially resulting in a lack of liquidity and in volatility in the
price of securities traded on those markets. Also, securities markets in
emerging market countries typically offer less regulatory protection for
investors.

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 an equal amount of the security being sold
short at no additional cost.

     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. 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.

     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 and for purposes of
satisfying certain tests applicable to regulated investment companies under the
Internal Revenue Code. In such a case, all or some part of any future losses in
the fund's long position in substantially identical securities may not become
deductible for tax purposes until all or some part of the short position has
been closed.

PORTFOLIO TURNOVER

     With respect to each series of shares, the manager will purchase and sell
securities without regard to the length of time the security has been held.
Accordingly, the rate of portfolio turnover may be greater than other investment
companies with similar investment objectives.

     The corporation intends to purchase a given security whenever the manager
believes it will contribute to the stated objective of a fund, even if the same
security has only recently been sold. In selling a given security, management
keeps in mind that (1) profits from sales of securities held less than three
months must be limited in order to meet the requirements of Subchapter M of the
Internal Revenue Code, and (2) profits from sales of securities are taxed to
shareholders. Subject to those considerations, the corporation will sell a given
security, no matter for how long or 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
management believes that the security is not fulfilling its purpose, either
because, among other things, it did not live up to management'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 securities prices is anticipated for a particular
asset category, a fund may decrease its position in such category and increase
its position in one or both of the other asset categories, and when a rise in
price levels is anticipated, a fund may increase its position in such category
and decrease its position in the other categories. However, the funds will,
under most circumstances, be essentially fully invested within the operating
ranges set forth in the Prospectus.


                                       8


     Since investment decisions are based on the anticipated contribution of the
security in question to a fund's objectives, the manager believes that the rate
of portfolio turnover is irrelevant when management believes a change is in
order to achieve those objectives.

OFFICERS AND DIRECTORS

     The principal officers and directors of the corporation, their principal
business experience during the past five years, and their affiliation with
Investors Research Corporation and its affiliated companies are listed below.
Unless otherwise noted, the business address of each director and officer is
4500 Main Street, Kansas City, Missouri 64111. Those directors who are
"interested persons" as defined in the Investment Company Act are indicated by
an asterisk (*).

     JAMES E. STOWERS, JR.,* chairman, principal executive officer and director;
chairman, director and controlling shareholder of Twentieth Century Companies,
Inc., parent corporation of Investors Research Corporation and Twentieth Century
Services, Inc.; chairman and director of Investors Research Corporation,
Twentieth Century Services, Inc., Twentieth Century Investors, Inc., Twentieth
Century World Investors, Inc., Twentieth Century Capital Portfolios, Inc.,
Twentieth Century Premium Reserves, Inc. and TCI Portfolios, Inc.

     JAMES E. STOWERS III,* president and director; president and director,
Investors Research Corporation, Twentieth Century Services, Inc., Twentieth
Century Investors, Inc., Twentieth Century World Investors, Inc., Twentieth
Century Capital Portfolios, Inc., Twentieth Century Premium Reserves, Inc., TCI
Portfolios, Inc. and Twentieth Century Companies, Inc.

     THOMAS A. BROWN, director; 2029 Wyandotte, Kansas City, Missouri; chief
executive officer, Associated Bearing Company, a corporation engaged in the sale
of bearings and power transmission products; director, Twentieth Century
Investors, Inc., Twentieth Century World Investors, Inc., Twentieth Century
Capital Portfolios, Inc., Twentieth Century Premium Reserves, Inc. and TCI
Portfolios, Inc.

     ROBERT W. DOERING, M.D., director; 6406 Prospect, Kansas City, Missouri;
general surgeon; director, Twentieth Century Investors, Inc., Twentieth Century
World Investors, Inc., Twentieth Century Capital Portfolios, Inc., Twentieth
Century Premium Reserves, Inc., and TCI Portfolios, Inc.

     LINSLEY L. LUNDGAARD, vice chairman of the board and director; 18630 East
Via Hermosa, Rio Verde, Arizona; retired; formerly vice president and national
sales manager, Flour Milling Division, Cargill, Inc.; director, Twentieth
Century Investors, Inc., Twentieth Century World Investors, Inc., Twentieth
Century Capital Portfolios, Inc., Twentieth Century Premium Reserves, Inc. and
TCI Portfolios, Inc.

     DONALD H. PRATT, director; P.O. Box 419917, Kansas City, Missouri;
president, Butler Manufacturing Company; director, Twentieth Century Investors,
Inc., Twentieth Century World Investors, Inc., Twentieth Century Capital
Portfolios, Inc., Twentieth Century Premium Reserves, Inc., and TCI Portfolios,
Inc.

     LLOYD T. SILVER JR., director; 2300 West 70th Terrace, Mission Hills,
Kansas; president, LSC, Inc., manufacturer representative; director, Twentieth
Century Investors, Inc., Twentieth Century World Investors, Inc., Twentieth
Century Capital Portfolios, Inc., Twentieth Century Premium Reserves, Inc. and
TCI Portfolios, Inc.

     M. JEANNINE STRANDJORD, director; 2330 Shawnee Mission Parkway, Westwood,
Kansas; senior vice president and treasurer, Sprint Corporation; director,
Twentieth Century Investors, Inc., Twentieth Century World Investors, Inc.,
Twentieth Century Capital Portfolios, Inc., Twentieth Century Premium Reserves,
Inc. and TCI Portfolios, Inc.

     JOHN M. URIE, director; 5511 N.W. Flint Ridge Road, Kansas City, Missouri;
consultant; formerly director of finance, City of Kansas City, Missouri;
director, Twentieth Century Investors, Inc., Twentieth Century World Investors,
Inc., Twentieth Century Capital Portfolios, Inc.,


                                       9


Twentieth Century Premium Reserves, Inc. and TCI Portfolios, Inc.

     WILLIAM M. LYONS, executive vice president and general counsel; executive
vice president, secretary and general counsel, Twentieth Century Investors, Inc.
and Twentieth Century World Investors, Inc.; executive vice president and
general counsel, Twentieth Century Capital Portfolios, Inc., Twentieth Century
Premium Reserves, Inc., TCI Portfolios, Inc., Twentieth Century Companies, Inc.,
Investors Research Corporation and Twentieth Century Services, Inc.

     ROBERT T. JACKSON, executive vice president- finance and principal
financial officer; treasurer, Twentieth Century Companies, Inc. and Investors
Research Corporation; executive vice president and treasurer, Twentieth Century
Services, Inc.; executive vice president-finance, Twentieth Century Investors,
Inc., TCI Portfolios, Inc., Twentieth Century World Investors, Inc., Twentieth
Century Capital Portfolios, Inc. and Twentieth Century Premium Reserves, Inc.;
formerly executive vice president, Kemper Corporation.

     PATRICK A. LOOBY, vice president and secretary; vice president and
secretary, Twentieth Century Capital Portfolios, Inc., Twentieth Century Premium
Reserves, Inc. and TCI Portfolios; vice president, Twentieth Century Investors,
Inc., Twentieth Century World Investors, Inc. and Twentieth Century Services,
Inc.

     MARYANNE ROEPKE, CPA, vice president, treasurer and principal accounting
officer; vice president and treasurer, Twentieth Century Investors, Inc.,
Twentieth Century World Investors, Inc., Twentieth Century Capital Portfolios,
Inc., Twentieth Century Premium Reserves, Inc. and TCI Portfolios, Inc.; vice
president, Twentieth Century Services, Inc.

     MERELE A. MAY, controller;  controller,  Twentieth Century Investors, Inc.,
Twentieth Century Capital Portfolios, Inc. and TCI Portfolios, Inc.

     The board of directors has established four standing committees: the
executive committee, the audit committee, the compliance committee and the
nominating committee.

     Messrs. Stowers Jr., Stowers III and Urie constitute the executive
committee of the board of directors. The committee performs the functions of the
board of directors between meetings of the board, 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.

     Messrs. Lundgaard (chairman), Urie and Doering and Ms. Strandjord
constitute the audit committee. The functions of the audit committee include
recommending the engagement of the corporation's independent auditors, reviewing
the arrangements for and scope of the annual audit, reviewing comments made by
the independent auditors with respect to internal controls and the
considerations given or the corrective action taken by management and reviewing
nonaudit services provided by the independent auditors.

     Messrs. Brown (chairman), Pratt and Silver constitute the compliance
committee. The functions of the compliance committee include reviewing the
results of the funds' compliance testing program, reviewing quarterly reports
from the manager of the funds regarding various compliance matters and
monitoring the implementation of the funds' Code of Ethics, including any
violations thereof.

     The nominating committee has, as its principal role, the consideration and
recommendation of individuals for nomination as directors. The names of
potential 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. The members of the nominating committee are Messrs. Urie
(chairman), Lundgaard and Stowers III.

     The directors of the corporation also serve as directors of Twentieth
Century Investors, Inc.,


                                       10


Twentieth Century World Investors, Inc., Twentieth Century Capital Portfolios,
Inc., Twentieth Century Premium Reserves, Inc., and TCI Portfolios, Inc.,
registered investment companies. Each director who is not an "interested person"
as defined in the Investment Company Act receives for service as a member of the
board of all six of such companies an annual director's fee of $36,000, a fee of
$1,000 per regular board meeting attended and $500 per special board meeting and
committee meeting attended. In addition, those directors who are not "interested
persons" who serve as chairman of a committee of the board of directors receive
an additional $2,000 for such services. These fees and expenses are divided
among the Twentieth Century investment companies based upon their relative net
assets. Under the terms of the management agreement with Investors Research
Corporation, the corporation is responsible for paying such fees and expenses.
Set forth below is the aggregate compensation paid for the periods indicated by
the corporation and by the Twentieth Century family of mutual funds as a whole
to each director of the corporation who is not an "interested person" as defined
in the Investment Company Act.

                                    Aggregate      Total Compensation from
                                   Compensation      the Twentieth Century
Director                       from the corporation1   Family of Funds2
- --------------------------------------------------------------------------------
Thomas A. Brown                       $15.58                44,000
Robert W. Doering, M.D.                14.85                44,000
Linsley L. Lundgaard                   15.58                46,000
Donald H. Pratt                        14.85                28,000
Lloyd T. Silver, Jr.                   14.85                44,000
M. Jeannine Strandjord                 14.85                44,000
John M. Urie                           15.58                46,000
- --------------------------------------------------------------------------------
1 Includes compensation actually paid by the corporation from February 15, 1996
  through May 31, 1996. 

2 Includes compensation paid by the six investment company members of the 
  Twentieth Century family of funds for the calendar year ended December 31, 
  1995.

     Those directors who are "interested persons," as defined in the Investment
Company Act, receive no fee as such for serving as a director. The salaries of
such individuals, who also are officers of the corporation, are paid by
Investors Research Corporation.

MANAGEMENT

     A description of the responsibilities and method of compensation of
Twentieth Century's investment manager, Investors Research Corporation
("Investors Research"), appears in the Prospectus under the caption
"Management."

     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 (i) the board of
directors of Twentieth Century or by the vote of a majority of outstanding votes
(as defined in the Investment Company Act) and (ii) by the vote of a majority of
the directors of Twentieth Century who are not parties to the agreement or
interested persons of Investors Research, 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 board of directors of Twentieth Century,
or by a vote of Twentieth Century's shareholders, on 60 days' written notice to
Investors Research and that it shall be automatically terminated if it is
assigned.

     The management agreement provides that Investors Research shall not be
liable to Twentieth Century 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 Investors Research 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 Investors Research. 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


                                       11


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 in different amounts and at different times for more than one but
less than all clients. In addition, purchases or sales of the same security may
be made for two or more clients on the same date. Such transactions will be
allocated among clients in a manner believed by Investors Research 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.

     In addition to managing the funds, on February 1, 1996, Investors Research
was also acting as an investment adviser to 13 institutional accounts and to
five other registered investment companies within the Twentieth Century mutual
fund complex: Twentieth Century Investors, Inc., Twentieth Century World
Investors, Inc., Twentieth Century Premium Reserves, Inc., TCI Portfolios, Inc.
and Twentieth Century Capital Portfolios, Inc.

     Twentieth Century Services, Inc. provides physical facilities, including
computer hardware and software and personnel, for the day-to-day administration
of Twentieth Century and Investors Research. Investors Research pays Twentieth
Century Services, Inc., for such services.

     As stated in the Prospectus, all of the stock of Twentieth Century
Services, Inc., and Investors Research is owned by Twentieth Century Companies,
Inc.

CUSTODIANS

     The Chase Manhattan Bank, N.A., 770 Broadway, New York, New York 10003,
Boatmen's First National Bank of Kansas City, 10th and Baltimore, Kansas City,
Missouri 64105, United Missouri Bank of Kansas City, N.A., 10th and Grand,
Kansas City, Missouri 64105, each serves as custodian of 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

     Ernst & Young LLP, One Kansas City Place, 1200 Main Street, Kansas City,
Missouri 64105, serves as Twentieth Century's independent auditors, providing
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 by Twentieth Century.

CAPITAL STOCK

     Twentieth Century's capital stock is described in the Prospectus under the
caption "Further Information About Twentieth Century."

     The corporation currently has three series of shares outstanding. Each
series of shares is further divided into three classes. Twentieth Century may in
the future issue one or more additional series or class of shares without a vote
of the shareholders. 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 profits (or
losses) of investment and other assets held for that series or class. Your
rights as a shareholder are the same for all series or classes of securities
unless otherwise stated. Within their respective series or class, all shares
will have equal redemption rights. Each share, when issued, is fully paid and
non-assessable. Each share, irrespective of series or class, is entitled to one
vote for each dollar of net asset value represented by such share on all
questions.

     In the event of complete liquidation or dissolution of Twentieth Century,
shareholders of each series or class of shares will be entitled to receive, pro
rata, all of the assets less the liabilities of that series or class.


                                       12


     Prior to February 15, 1996, no shares of the funds had been offered to the
public. As a result, there were no 5% shareholders and no shares were owned by
officers or directors of the corporation.

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 Securities and Exchange
Commission ("SEC"). Pursuant to such plan, the funds may issue up to three
classes of shares: an Investor Class, a Service Class and an Advisor Class.

     The Investor Class is made available to investors directly by the
investment manager through its affiliated broker dealer, Twentieth Century
Services, Inc., for a single unified management fee, without any load or
commission. The 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 below), and the
Advisor Class shares are subject to a Master Distribution and Shareholder
Services Plan (also described below). 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 12b-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 beginning on this page.

     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 Prospectus, the funds' Service Class of shares are 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


                                       13


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' investment 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 net assets of the funds' Service Class
shares.

     The Distributor enters into contracts with each financial intermediary for
the provision of certain shareholder services and utilizes the shareholder
services fees 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, (1) receiving, aggregating and processing purchase, exchange and
redemption request from beneficial owners (including contract owners of
insurance products that utilize the funds as underlying investment medium) of
shares and placing purchase, exchange and redemption orders with the
Distributor; (2) providing shareholders with a service that invests the assets
of their accounts in shares pursuant to specific or pre-authorized instructions;
(3) processing dividend payments from a fund on behalf of shareholders and
assisting shareholders in changing dividend options, account designations and
addresses; (4) providing and maintaining elective services such as check writing
and wire transfer services; (5) acting as shareholder of record and nominee for
beneficial owners; (6) maintaining account records for shareholders and/or other
beneficial owners; (7) issuing confirmations of transactions; (8) providing
subaccounting with respect to shares beneficially owned by customers of third
parties or providing the information to a fund as necessary for such
subaccounting; (9) 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; (10) providing other similar administrative and
sub-transfer agency services; and (11) paying "service fees" for the provision
of personal, continuing services to investors, as contemplated by the Rules of
Fair Practice of the National Association of Securities Dealers, Inc. ("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 Prospectus, 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'
investment manager has


                                       14


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
net 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, (1) the payment of sales
commission, ongoing commissions and other payments to brokers, dealers,
financial institutions or others who sell Advisor Class shares pursuant to
Selling Agreements; (2) compensation to registered representatives or other
employees of Distributor who engage in or support distribution of the funds'
Advisor Class shares; (3) compensation to, and expenses (including overhead and
telephone expenses) of, Distributor; (4) the printing of prospectuses,
statements of additional information and reports for other than existing
shareholders; (5) the preparation, printing and distribution of sales literature
and advertising materials provided to the funds' shareholders and prospective
shareholders; (6) receiving and answering correspondence from prospective
shareholders, including distributing prospectuses, statements of additional
information, and shareholder reports; (7) the providing of facilities to answer
questions from prospective investors about fund shares; (8) complying with
federal and state securities laws pertaining to the sale of fund shares; (9)
assisting investors in completing application forms and selecting dividend and
other account options; (10) the providing of other reasonable assistance in
connection with the distribution of fund shares; (11) the organizing and
conducting of sales seminars and payments in the form of transactional
compensation or promotional incentives; (12) profit on the foregoing; (13) the
payment of "service fees" for the provision of personal, continuing services to
investors, as contemplated by the Rules of Fair Practice of the National
Association of Securities Dealers; Inc. ("NASD") and (14) 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.

TAXES

     Each fund intends to qualify under the Internal Revenue Code (the "Code")
as a regulated investment company. If they qualify, they will not be subject to
U.S. federal income tax on net investment income and net capital gains, which
are distributed to its shareholders within certain time periods specified in the
Code. Amounts not distributed on a timely basis would be subject to federal and
state corporate income tax and to a nondeductible 4% excise tax.

     Each fund intends to distribute annually all of its net ordinary income and
net capital gains.

     Distributions from net investment income and net short-term capital gains
are taxable to shareholders as ordinary income. The dividends received deduction
available to corporate shareholders for dividends received from a fund will
apply to ordinary income distributions only to the extent that they are
attributable to the fund's dividend income from U.S. corporations. In addition,
the dividends received deduction will be limited if the shares with respect to
which the dividends are received are treated as debt-financed or are deemed to
have been held less than 46 days by a fund.

     Distributions from net long-term capital gains are taxable to a shareholder
as long-term capital gains regardless of the length of time the shares on which
such distributions are paid have been held by the shareholder. However,
shareholders 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

                                       15


extent of any distribution of long-term capital gain to the shareholder with
respect to such shares.

     Redemption of shares of a fund 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 long term if
shareholders have held such shares for a period of more than one year. 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.

     In addition to the federal income tax consequences described above relating
to an investment in shares of the funds, there may be other federal, state or
local tax considerations that depend upon the circumstances of each particular
investor. Prospective shareholders are therefore urged to consult their tax
advisers with respect to the effect of this investment on their own situations.

BROKERAGE

     Under the terms of the Management Agreement between Twentieth Century and
Investors Research, Investors Research has the responsibility of selecting
brokers to execute portfolio transactions. Twentieth Century's policy is to
secure the most favorable prices and execution of orders on its portfolio
transactions. So long as that policy is met, Investors Research may take into
consideration the factors discussed below when selecting brokers.

     Investors Research receives statistical and other information and services
without cost from brokers and dealers. Investors Research evaluates such
information and services, together with all other information that it may have,
in supervising and managing the investment portfolios of Twentieth Century.
Because such information and services may vary in amount, quality and
reliability, their influence in selecting brokers varies from none to very
substantial. Investors Research proposes to continue to place some of Twentieth
Century's 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 the
services required to be performed by Investors Research. Investors Research does
not utilize brokers who provide such information and services for the purpose of
reducing the expense of providing required services to Twentieth Century.

     The brokerage commissions paid by the funds may exceed those that another
broker might have charged for effecting the same transactions because of the
value of the brokerage and/or research services provided by the broker. Research
services furnished by brokers through whom Twentieth Century effects securities
transactions may be used by Investors Research in servicing all of its accounts,
and not all such services may be used by Investors Research in managing the
portfolios of Twentieth Century.

     The staff of the Securities and Exchange Commission 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 Twentieth Century and the manager believe that the
facilities, expert personnel and technological systems of a broker enable the
corporation 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.
Twentieth Century normally places its over-the-counter transactions with
principal market makers but also may deal on a brokerage basis when utilizing
electronic trading networks or as circumstances warrant.


                                       16


PERFORMANCE ADVERTISING

     Average annual total return is calculated by determining each fund's
cumulative total return for the stated period and then computing the annual
compound return that would produce the cumulative total return if the fund's
performance had been constant over that period. The following table sets forth
the cumulative total return since inception for the funds for the period from
February 15, 1996 through May 31, 1996. Cumulative total return includes all
elements of return, including reinvestment of dividends and capital gains
distribution. Annualization of a fund's return assumes that the partial year
performance will be constant throughout the period. Actual return through the
period may be greater or less than the annualized data.

FUND                                          Cumulative Total Return(1)
- --------------------------------------------------------------------------------
STRATEGIC ALLOCATION: CONSERVATIVE                        .64%
STRATEGIC ALLOCATION: MODERATE                           3.11%
STRATEGIC ALLOCATION: AGGRESSIVE                         4.60%
- --------------------------------------------------------------------------------

(1)For the period February 15, 1996 (inception) through May 31, 1996.

     The funds also may elect to advertise cumulative total return and average
annual total return, computed as described above, over periods of time other
than one, five and 10 years and cumulative total return over various time
periods.

ADDITIONAL PERFORMANCE COMPARISONS

     Individual fund performance may be compared to the performance of other
mutual funds of mutual fund portfolios with comparable investment objectives and
policies through various mutual fund or market indices such as those prepared by
Dow Jones & Co., Inc. Standard & Poor's Corporation, Shearson Lehman Brothers,
Inc., J. P. Morgan & Company, Salomon Brothers, Inc., the Morgan Stanley Capital
International EAFE (Europe, Australia and Far East) Index, Donoghue's Money Fund
Average, the Bank Rate Monitor National Index of 2 1/2-year CD rates, IFC Global
Composite Index, and to composite indices consisting of two or more of the above
to more accurately reflect fund holdings, and to data prepared by Lipper
Analytical Services, Inc. or Morningstar, Inc., and to the Consumer Price Index.
Comparisons may also be made to indices or data published in Money Magazine,
Forbes, Barron's, The Wall Street Journal, The New York Times, Business Week,
Pensions and Investments, U.S.A. Today, and other similar publications or
services. In addition to performance information, general information about the
funds that appears in a publication such as those mentioned above or in the
Prospectus under the heading "Performance Advertising" may be included in
advertisements and in reports to shareholders.

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 ratings
     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


                                       17


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.

REDEMPTIONS IN KIND

     In order to protect the investments of the remaining shareholders,
Twentieth Century has adopted a policy regarding large redemptions. That policy
is described in detail in the prospectuses under the heading "Special
Requirements for Large Redemptions."

     In addition to the policy just mentioned, the funds have elected to be
governed by Rule 18f-1 under the Investment Company Act of 1940, pursuant to
which the funds are obligated to redeem shares solely in cash up to the lesser
of $250,000 or 1% of the net asset value of a fund during any 90-day period for
any one shareholder. Should redemptions by any shareholder exceed such
limitation, Twentieth Century will have the option of redeeming the excess in
cash or in kind. If shares are redeemed in kind, the redeeming shareholder might
incur brokerage costs in converting the assets to cash. The securities delivered
will be selected at the sole discretion of the manager and will not necessarily
be representative of the entire portfolio and will be securities that the
manager regards as least desirable. The method of valuing securities used to
make redemptions in kind will be the same as the method of valuing portfolio
securities described in the Prospectus under the heading "How Share Price is
Determined," and such valuation will be made as of the same time the redemption
price is determined.

HOLIDAYS

     Twentieth Century does not determine the net asset value of its shares on
days when the New York Stock Exchange is closed. Currently, the Exchange is
closed on Saturdays and Sundays and on holidays, namely New Year's Day,
Presidents' Day, Good Friday, Memorial Day, Independence Day, Labor Day,
Thanksgiving and Christmas.

FINANCIAL STATEMENTS

     The unaudited financial statements of the funds for the period from
February 15, 1996 (inception) to May 31, 1996 are included in this statement of
additional information. While the financial statements respecting such fund
contained herein are unaudited, in the opinion of management, all adjustments
necessary for a fair presentation of the financial position and results of
operations for the period from February 15, 1996 (inception) to May 31, 1996,
have been made. The results of operations for the period indicated are not
necessarily indicative of the results for an entire year.


                                       18

<TABLE>
<CAPTION>
- --------------------------------------------------------------------------------------------------------
STATEMENTS OF ASSETS AND LIABILITIES
                                                          STRATEGIC         STRATEGIC        STRATEGIC
                                                         ALLOCATION        ALLOCATION       ALLOCATION
May 31, 1996 (Unaudited)                                CONSERVATIVE        MODERATE        AGGRESSIVE
- --------------------------------------------------------------------------------------------------------
<S>                                                    <C>              <C>               <C>        
ASSETS
Investment securities, at value (identified
   cost of $8,076,468, $14,622,761 and $15,666,174,
   respectively) (Note 3)...........................   $8,075,074       $14,980,472       $16,247,257
Cash................................................       46,417           100,162           154,851
Receivable for investments sold.....................       27,451            63,065           119,375
Dividends and interest receivable...................       39,758            76,218            73,787
                                                      -----------      ------------      ------------
                                                        8,188,700        15,219,917        16,595,270
                                                      -----------      ------------      ------------
LIABILITIES
Disbursements in excess of demand deposit cash......           --                27               816
Payable for investments purchased...................      114,030           244,770           202,643
Payable for capital shares redeemed.................        7,632             9,667             6,794
Accrued management fees (Note 2)....................        6,333            12,804            15,241
Other liabilities...................................            4                25                49
                                                       ----------        ----------        ----------
                                                          127,999           267,293           225,543
                                                       ----------        ----------        ----------
NET ASSETS APPLICABLE
TO OUTSTANDING SHARES...............................   $8,060,701       $14,952,624       $16,369,727
                                                      ===========       ===========       ===========

CAPITAL SHARES, $.01 PAR VALUE
Authorized..........................................  100,000,000       100,000,000       100,000,000
                                                      ===========       ===========       ===========
Outstanding.........................................    1,607,830         2,906,975         3,127,215
                                                      ===========       ===========       ===========

NET ASSET VALUE PER SHARE...........................        $5.01             $5.14             $5.23
                                                      ===========       ===========       ===========

NET ASSETS CONSIST OF:
Capital (par value and paid-in surplus).............   $8,020,386       $14,574,621       $15,842,319
Undistributed net investment  income................       41,346            57,291            52,851
Accumulated undistributed net realized
   gain (loss) from investment and foreign
   currency transactions............................          370           (36,976)         (106,534)
Net unrealized appreciation (depreciation)
   on investments and translation of assets
   and liabilities in foreign currencies (Note 3)...       (1,401)          357,688           581,091
                                                       ----------       -----------       -----------
                                                       $8,060,701       $14,952,624       $16,369,727
                                                       ==========       ===========       ===========

See Notes to Financial Statements
</TABLE>

                                       19

<TABLE>
<CAPTION>
- --------------------------------------------------------------------------------------------------------
STATEMENTS OF OPERATIONS
                                                          STRATEGIC         STRATEGIC        STRATEGIC
February 15, 1996 (Inception) through                    ALLOCATION        ALLOCATION       ALLOCATION
May 31, 1996 (Unaudited)                                CONSERVATIVE        MODERATE        AGGRESSIVE
- --------------------------------------------------------------------------------------------------------
<S>                                                       <C>               <C>               <C>    
INVESTMENT INCOME
Income:
   Dividends (net of foreign taxes withheld
     of $234, $1,429 and $1,654, respectively).........   $12,670           $31,141           $32,559
   Interest............................................    71,360            75,540            54,663
                                                        ---------         ---------         ---------
                                                           84,030           106,681            87,222
                                                        ---------         ---------         ---------
Expenses:
   Management fees (Note 2)............................    17,689            29,853            33,108
   Directors' fees and expenses........................     1,155             1,156             1,263
                                                        ---------         ---------         ---------
                                                           18,844            31,009            34,371
                                                        ---------         ---------         ---------
NET INVESTMENT INCOME..................................    65,186            75,672            52,851
                                                        ---------         ---------         ---------
REALIZED AND UNREALIZED GAIN (LOSS) (Note 3)
Net realized gain (loss) during the period on:
   Investments.........................................     1,824           (35,052)         (104,324)
   Foreign currency transactions.......................    (1,454)           (1,924)           (2,210)
                                                        ---------        ----------       -----------
                                                              370           (36,976)         (106,534)
                                                        ---------        ----------       -----------
Change in net unrealized appreciation 
(depreciation) during the period on:
   Investments.........................................    (1,394)          357,711           581,083
   Translation of assets and liabilities in
     foreign currencies................................        (7)              (23)                8
                                                       ----------        ----------        ----------
                                                           (1,401)          357,688           581,091
                                                       ----------        ----------        ----------
NET REALIZED AND UNREALIZED GAIN (LOSS) ON
INVESTMENTS AND FOREIGN CURRENCY.......................    (1,031)          320,712           474,557
                                                       ----------        ----------        ----------
NET INCREASE IN NET ASSETS
RESULTING FROM OPERATIONS..............................   $64,155          $396,384          $527,408
                                                         ========          ========          ========

See Notes to Financial Statements
</TABLE>

                                       20


<TABLE>
<CAPTION>
- --------------------------------------------------------------------------------------------------------
STATEMENTS OF CHANGES IN NET ASSETS

                                                          STRATEGIC         STRATEGIC        STRATEGIC
February 15, 1996 (Inception) through                    ALLOCATION        ALLOCATION       ALLOCATION
May 31, 1996 (Unaudited)                                CONSERVATIVE        MODERATE        AGGRESSIVE
- --------------------------------------------------------------------------------------------------------
INCREASE IN NET ASSETS
<S>                                                       <C>               <C>               <C>    
OPERATIONS
Net investment income................................     $65,185           $75,672           $52,851
Net realized gain (loss) on investments
   and foreign currency transactions.................         370           (36,976)         (106,534)
Change in net unrealized appreciation
   (depreciation) on investments and
   translation of assets and liabilities
   in foreign currencies.............................      (1,401)          357,688           581,091
                                                       ----------        ----------         ---------
Net increase in net assets resulting
   from operations...................................      64,155           396,384           527,408
                                                       ----------        ----------         ---------
DISTRIBUTIONS TO SHAREHOLDERS
From net investment income...........................     (23,840)          (18,381)               --
                                                      -----------        ----------         ---------
CAPITAL SHARE TRANSACTIONS
Proceeds from shares sold............................   9,121,198        19,244,744        19,648,392
Proceeds from reinvestment of distributions..........      23,840            18,381                --
Payments for shares redeemed.........................  (1,124,652)       (4,688,504)       (3,806,073)
                                                      -----------       -----------       -----------
Net increase in net assets from capital
   share transactions................................   8,020,386        14,574,621        15,842,319
                                                      -----------       -----------       -----------

NET INCREASE IN NET ASSETS...........................   8,060,701        14,952,624        16,369,727

NET ASSETS
Beginning of period..................................          --                --                --
                                                       ----------       -----------       -----------
End of period........................................  $8,060,701       $14,952,624       $16,369,727
                                                       ==========       ===========       ===========
Undistributed net investment
    income...........................................     $41,346           $57,291           $52,851
                                                         ========          ========          ========
TRANSACTIONS IN SHARES OF THE FUNDS:
Sold.................................................   1,829,412         3,833,979         3,865,343
Issued in reinvestment of distributions..............       4,826             3,684                --
Redeemed.............................................    (226,408)         (930,688)         (738,128)
                                                      -----------       -----------       -----------
Net increase.........................................   1,607,830         2,906,975         3,127,215
                                                       ==========        ==========        ==========

See Notes to Financial Statements
</TABLE>

                                       21


- --------------------------------------------------------------------------------
NOTES TO FINANCIAL STATEMENTS May 31, 1996 (Unaudited)


1. Organization and Summary of Significant Accounting Policies

Organization--

     Twentieth Century Strategic Asset Allocations, Inc. (the Corporation) is
registered under the Investment Company Act of 1940 as an open-end diversified
management investment company. Three series of shares are currently issued as
Strategic Allocation: Conservative, Strategic Allocation: Moderate and Strategic
Allocation: Aggressive (the Funds). The following significant accounting
policies related to the Funds are in accordance with accounting policies
generally accepted in the investment company industry.

Security Valuations--

     Portfolio securities traded primarily on a principal securities exchange
are valued at the last reported sales price, or the mean between the latest bid
and asked prices where no last sales price is available. Securities traded
over-the-counter are valued at the mean of the latest bid and asked prices or,
in the case of certain foreign securities, at the last reported sales price.
Debt securities not traded on a principal securities exchange are valued through
valuations obtained from a commercial pricing service or at the mean of the most
recent bid and asked prices. Short-term securities are valued at amortized cost,
which approximates value. When valuations are not readily available, securities
are valued at fair value as determined in good faith by the board of directors.

Security Transactions--

     Security transactions are accounted for on the date purchased or sold. Net
realized gains and losses are determined on the identified cost basis, which is
also used for federal income tax purposes.

Investment Income--

     Dividend income less foreign taxes withheld (if any) is recorded as of the
ex-dividend date or upon receipt of ex-dividend notification in the case of
certain foreign securities. Interest income is recognized on the accrual basis
and includes amortization of discounts and premiums.

Foreign Currency Transactions--

     The accounting records of the Funds are maintained in U.S. dollars. All
assets and liabilities initially expressed in foreign currencies are converted
into U.S. dollars at prevailing exchange rates. Purchases and sales of
investment securities, dividend and interest income, and certain expenses are
translated at the rates of exchange prevailing on the respective dates of such
transactions.

     The Funds do not isolate that portion of the results of operations
resulting from changes in the foreign exchange rates on investments from the
fluctuations arising from changes in the market prices of securities held. Such
fluctuations are included with the net realized and unrealized gain or loss on
investments.

     Net realized foreign currency exchange gains or losses arise from sales of
portfolio securities, sales of foreign currencies, and the difference between
asset and liability amounts initially stated in foreign currencies and the U.S.
dollar value of the amounts actually received or paid. Net unrealized foreign
currency exchange gains or losses arise from changes in the value of assets and
liabilities other than portfolio securities at the end of the reporting period,
resulting from changes in the exchange rates.

Forward Foreign Currency Exchange Contracts--

     The Funds may enter into forward foreign currency exchange contracts for
the purpose of settling specific purchases or sales of securities denominated in
a foreign currency or to hedge the Funds' exposure to foreign currency exchange
rate fluctuations. The net U.S. dollar value of foreign currency underlying all
contractual commitments held by the Funds and


                                       22


- --------------------------------------------------------------------------------


the resulting unrealized appreciation or depreciation are determined daily using
prevailing exchange rates. Forward contracts involve elements of market risk in
excess of the amount reflected in the Statements of Assets and Liabilities. The
Funds bear the risk of an unfavorable change in the foreign currency exchange
rate underlying the forward contract. Additionally, losses may arise if the
counterparties do not perform under the contract terms.

Repurchase Agreements--

     Securities pledged as collateral for repurchase agreements are held by the
Federal Reserve Bank and are designated as being held on the Fund's behalf by
its custodian under a book-entry system. The Funds monitor the adequacy of the
collateral daily and can require the seller to provide additional collateral in
the event the market value of the securities pledged falls below the carrying
value of the repurchase agreement.

Income Tax Status--

     It is the policy of the Funds to distribute all taxable income and capital
gains to shareholders and to otherwise qualify as a regulated investment company
under provisions of the Internal Revenue Code. Accordingly, no provision has
been made for federal or state taxes.

Distributions to Shareholders--

     Distributions to shareholders are recorded on the ex-dividend date.
Distributions from net investment income are declared and paid quarterly, with
respect to Strategic Allocation: Conservative, and annually with respect to
Strategic Allocation: Moderate and Strategic Allocation: Aggressive.
Distributions from net realized gains are declared and paid annually.

     The character of distributions made during the year from net investment
income or net realized gains may differ from their ultimate characterization for
federal income tax purposes. These differences are primarily due to differences
in the recognition of income and expense items for financial statement and tax
purposes.

Supplementary Information--

     Certain officers and directors of the Corporation are also officers and/or
directors, and, as a group, controlling stockholders of Twentieth Century
Companies, Inc., the parent of the Corporation's investment manager, Investors
Research Corporation (IRC).

2. MANAGEMENT AGREEMENT

     The Management Agreement with IRC provides for a monthly management fee
computed by multiplying the applicable fee for each Fund by the average daily
closing value of such Fund's net assets during the previous month. The Agreement
further provides that all expenses of the Funds, except brokerage commissions,
taxes, interest, expenses of those directors who are not considered "interested
persons" as defined in the Investment Company Act of 1940 (including counsel
fees) and extraordinary expenses, will be paid by IRC. The agreement may be
terminated by either party upon 60 days' written notice.

     The current annual management fee for Strategic Allocation: Conservative is
1.00% of average net assets up to $1 billion and .90% of average net assets in
excess of $1 billion. The current annual management fee for Strategic
Allocation: Moderate is 1.10% of average net assets up to $1 billion and 1.00%
of average net assets in excess of $1 billion. The current annual management fee
for Strategic Allocation: Aggressive is 1.20% of average net assets up to $1
billion and 1.10% of average net assets in excess of $1 billion.


                                       23


- --------------------------------------------------------------------------------
NOTES TO FINANCIAL STATEMENTS (CONTINUED) May 31, 1996 (Unaudited)

3. INVESTMENT TRANSACTIONS

     Investment transactions (excluding short-term investments) for the period
ended May 31, 1996, were as follows:


                                     CONSERVATIVE     MODERATE      AGGRESSIVE
                                     ------------    ----------     ----------
PURCHASES
 Common Stocks                        $3,757,575    $10,157,518   $13,801,005
 Preferred Stocks                         35,999         87,387       197,492
 U.S. Treasury & Agency Obligations    2,691,460      2,674,058     1,557,684
 Other Debt Obligations                1,173,832      1,617,129     1,611,280

PROCEEDS FROM SALES
 Common Stocks                          $977,842     $1,953,567   $ 2,927,796
 Preferred Stocks                             --         13,256        15,908
 U.S. Treasury & Agency Obligations      109,719             --       100,063
 Other Debt Obligations                  214,994        107,497       100,243


     On May 31, 1996, the composition of unrealized appreciation and
(depreciation) of investment securities based on the aggregate cost of
investments for federal income tax purposes was as follows:

                   APPRECIATION  (DEPRECIATION)    NET     FEDERAL TAX COST
                   ------------  --------------    ----    ----------------

Conservative         $172,401      $(178,347)    $(5,946)    $8,081,020
Moderate              574,366       (231,206)    343,160     14,637,312
Aggressive            798,745       (247,118)    551,627     15,695,630


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                                       27


                                                        TWENTIETH CENTURY
                                                     ASSET ALLOCATIONS FUNDS

                                                           STATEMENT OF
                                                     ADDITIONAL INFORMATION

                                                        SEPTEMBER 3, 1996


TWENTIETH CENTURY MUTUAL FUNDS
and THE BENHAM GROUP
- --------------------------------------------

P.O. BOX 419200
KANSAS CITY, MISSOURI
64141-6200
- --------------------------------------------
Person-to-person assistance:
1-800-345-2021 OR 816-531-5575
- --------------------------------------------
Automated Information Line:
1-800-345-8765
- --------------------------------------------
Telecommunications Device for the Deaf:
1-800-634-4113 OR 816-753-1865
- --------------------------------------------
Fax: 816-340-7962
- --------------------------------------------
Internet: HTTP://WWW.TWENTIETH-CENTURY.COM
- --------------------------------------------

                                                           TWENTIETH CENTURY
                                                            STRATEGIC ASSET
                                                              ALLOCATIONS
- --------------------------------------------------------------------------------
SH-BKT-5313    [recycled logo]
9608             Recycled



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