USAA MUTUAL FUND INC
497, 1999-05-05
Previous: UNITED TECHNOLOGIES CORP /DE/, S-8, 1999-05-05
Next: VARIABLE ANNUITY ACCOUNT B OF AETNA LIFE INS & ANNUITY CO, 497, 1999-05-05



                                  USAA S&P 500
                                   INDEX FUND

                                   Prospectus
                                  May 1, 1999

As with other mutual funds,  the  Securities  and Exchange  Commission  has not
approved  or  disapproved  of this Fund's  shares or  determined  whether  this
prospectus  is  accurate  or  complete.  Anyone  who  tells  you  otherwise  is
committing a crime.

                               TABLE OF CONTENTS

What is the Funds Investment Objective and Main Strategy? ..................  2
What is the S&P 500 Index? .................................................  2
Main Risks of Investing in This Fund .......................................  2
Is This Fund for You? ......................................................  3
Could the Value of Your Investment in This Fund Fluctuate? .................  3
Fees and Expenses ..........................................................  5
Fund Investments ...........................................................  6
Fund and Portfolio Management .............................................. 11
Using Mutual Funds in an Investment Program ................................ 13
How to Invest .............................................................. 14
Important Information About Purchases and Redemptions ...................... 17
Exchanges .................................................................. 18
Shareholder Information .................................................... 18
Financial Highlights ....................................................... 21
Appendix A ................................................................. 22
Appendix B ................................................................. 24

<PAGE>

USAA Investment  Management Company manages this Fund. For easier reading, USAA
Investment  Management  Company will be referred to as "we" or "us"  throughout
the Prospectus.

WHAT IS THE FUND'S INVESTMENT OBJECTIVE AND MAIN STRATEGY?

The Fund seeks to match,  as closely  as  possible  (before  the  deduction  of
expenses),  the  performance of the S&P 500 Index 1, which emphasizes stocks of
large U.S. companies.  The Fund seeks to achieve its objective by investing all
of its investable assets in the Equity 500 Index Portfolio  (Portfolio),  which
is a separate mutual fund advised by Bankers Trust Company (Bankers Trust) with
an  identical  investment  objective.  To track the S&P 500 Index as closely as
possible,  Bankers  Trust  attempts  to keep the  Portfolio  fully  invested in
stocks.  The Portfolio  invests in stocks of companies  included in the S&P 500
Index that  Bankers  Trust  believes are  representative  of the entire S&P 500
Index. The investment  performance of the Fund will correspond  directly to the
investment performance of the Portfolio.

The Funds Board of Directors may change the Funds investment  objective without
shareholder approval.

In view of the risks inherent in all  investments  in  securities,  there is no
assurance that the Funds  objective will be achieved.  See FUND  INVESTMENTS on
page 6 for more information.

WHAT IS THE S&P 500 INDEX?

The S&P 500 Index is a  well-known  stock  market  index that  includes  common
stocks  of  500  companies  from  several  industrial  sectors  representing  a
significant  portion of the market value of all stocks  publicly  traded in the
United States.  Most of these stocks are listed on the New York Stock Exchange.
See ADDITIONAL INFORMATION ON THE S&P 500 INDEX on page 10.

MAIN RISKS OF INVESTING IN THIS FUND

The primary risks of investing in this Fund are market risk and cash flow risk.

*    MARKET RISK involves the possibility that the Funds  investments in stocks
     will decline  in a down stock market,  reducing the value of the company's
     stock, regardless of the success or failure of the company's operations.
____________________

1    "Standard & Poor's(R),"  "S&P(R),"  "Standard & Poor's 500," "S&P 500(R),"
     and "500" are trademarks of The McGraw-Hill Companies,  Inc. and have been
     licensed for use by Bankers Trust Company.

                                       2
<PAGE>
*    CASH FLOW RISK involves the risk  that  substantial  changes  in purchases
     and redemptions in the Portfolio adversely affect the ability to match the
     performance of the S&P 500 Index.

As with other mutual funds, losing  money  is  also a risk of investing in this
Fund.

As you consider an investment  in this Fund,  you should also take into account
your tolerance for the daily  fluctuations of the financial markets and whether
you can afford to leave your money in the  investment  for long periods of time
to ride out down periods.

An  investment  in this Fund is not a deposit  of USAA  Federal  Savings  Bank,
Bankers Trust  Company,  or any other bank, and is not insured or guaranteed by
the Federal Deposit Insurance Corporation or any other government agency.

[CAUTION LIGHT GRAPHIC]
Look for this symbol throughout the Prospectus. We use it to mark more detailed
information about the main risks you will face as a Fund shareholder.

IS THIS FUND FOR YOU?

This Fund might be appropriate as part of your investment portfolio if . . .

*    You are looking for a convenient and cost-efficient  means of investing in
     a portfolio that generally reflects the performance of the stock market.
*    You are looking for some dividend income.
*    You are willing to accept moderate risk.

This Fund MAY NOT be appropriate as part of your investment portfolio if . . .

*    You need steady income and stability of principal.
*    You are unwilling to take greater risk for long-term goals.
*    You are unable or reluctant to invest for a period of five years or more.
*    You need an investment that provides tax-free income.

The  Fund  by  itself  does  not  constitute  a  balanced  investment  program.
Diversifying  your investments may improve your long-run  investment return and
lower the volatility of your overall investment portfolio.

COULD THE VALUE OF YOUR INVESTMENT IN THIS FUND FLUCTUATE?

Yes, it could.  Bankers Trust attempts to keep the Portfolio  fully invested in
stocks that are representative of the S&P 500 Index as a whole. Therefore,  the
value of your  investment in this Fund will fluctuate with the changing  market
value of the investments in the Portfolio.

                                       3
<PAGE>
The bar chart shown below illustrates the Funds volatility and performance from
year to year over the life of the Fund.

TOTAL RETURN

All mutual funds must use the same formula to calculate total return.

[SIDE BAR]
TOTAL RETURN MEASURES THE PRICE CHANGE IN A SHARE ASSUMING THE REINVESTMENT OF
ALL DIVIDEND INCOME AND CAPITAL GAIN DISTRIBUTIONS.

[BAR CHART]
                   CALENDAR           TOTAL 
                     YEAR            RETURN

                     1997            33.03%
                     1998            28.62%

                     *Fund began operations on May 1, 1996.

     THE FUNDS TOTAL  RETURN FOR THE  THREE-MONTH  PERIOD ENDED MARCH 31, 1999,
     WAS 4.84%.

During the  periods  shown in the bar chart,  the  highest  total  return for a
quarter was 21.33%  (quarter  ending  December  31,  1998) and the lowest total
return for a quarter was -9.03% (quarter ending September 30, 1998).

The table below shows how the Funds  average  annual  returns for the  one-year
period as well as the life of the Fund  compared  to those of the S&P 500 Index
itself. Unlike an index, the Fund has operating expenses.  Therefore, while the
Fund  attempts to track the S&P 500 Index as closely as  possible,  it will not
match exactly the performance of the Index.  Keep in mind, the S&P 500 Index is
a model, not an actual portfolio.  It is a passive measure of U.S. stock market
returns. It does not factor in the costs of buying, selling, and holding stocks
- -- costs which are reflected in the Funds results.  Also, remember,  historical
performance does not necessarily indicate what will happen in the future.

===============================================================================
  Average Annual Total Returns                     Since Fund's
  (for the periods ending              Past        Inception on
  December 31, 1998)                  1 Year        May 1, 1996
===============================================================================
  S&P 500 Index Fund*                 28.62%          29.67%
- -------------------------------------------------------------------------------
  S&P 500 Index                       28.60%          29.00%
===============================================================================

*EXCLUDES $10 ACCOUNT  MAINTENANCE FEE, WHICH IS WAIVED FOR ACCOUNTS OF $10,000
OR MORE.

                                       4
<PAGE>
                              [TELEPHONE GRAPHIC]
                                  TouchLine sm
                                 1-800-531-8777
                                     PRESS
                                       1
                                      THEN
                                       1
                                      THEN
                                     3 4 #

Please  consider  performance  information  in light of the  Fund's  investment
objective and policies and market  conditions during the reported time periods.
The value of your  shares  may go up or down.  For the most  current  price and
return   information  for  this  Fund,  you  may  call  USAA  TouchLine  sm  at
1-800-531-8777.  Press 1 for the Mutual Fund Menu, press 1 again for prices and
returns. Then, press 34# when asked for the Fund Code.

                                NEWSPAPER SYMBOL
                                     S&PIdx

                                 TICKER SYMBOL
                                     USSPX

You can also find the most current price of your shares in the business section
of your newspaper in the mutual fund section under the heading "USAA Group" and
the symbol  "S&PIdx." If you prefer to obtain this  information from an on-line
computer service, you can do so by using the ticker symbol "USSPX."

FEES AND EXPENSES

This summary  shows what it will cost you directly or  indirectly  to invest in
the Fund.  The Board of Directors of USAA Mutual Fund,  Inc., of which the Fund
is a series, believes that the aggregate per share expenses of the Fund and the
Equity 500 Index Portfolio (Portfolio) will be less than or approximately equal
to the expenses which the Fund would incur if the investable assets (Assets) of
the Fund were invested  directly in the types of  securities  being held by the
Portfolio.

Shareholder Transaction Expenses -- Fees You Pay Directly

There are no fees or sales loads  charged to your  account when you buy or sell
Fund  shares.  However,  if you sell  shares  and  request  your  money by wire
transfer,  there is a $10 fee.  (Your bank may also charge a fee for  receiving
wires.)

                Annual Account Maintenance Fee
                (for accounts under $10,000)         $10

Annual Fund Operating Expenses -- Fees You Pay Indirectly

Fund expenses come out of the Funds assets and are reflected in the Funds share
price and  dividends.  "Other  Expenses"  include  expenses  such as custodian,
administration,  and legal fees.  The  figures  below are based upon the actual
expenses of the Fund and Portfolio  combined  during the past fiscal year ended
December 31, 1998, as adjusted to reflect  changes in the underlying  contracts
for services, and are calculated as a percentage of average net assets (ANA).

[SIDE BAR]
12B-1 FEES -- SOME MUTUAL FUNDS CHARGE THESE FEES TO PAY FOR ADVERTISING AND
OTHER COSTS OF SELLING FUND SHARES.

               Investment Advisory Fees           .08%
               Distribution (12b-1) Fees           None
               Other Expenses                     .10%
                                                  ----
               Total Annual Operating Expenses    .18%
                                                  ====
                                       5
<PAGE>
We are contractually  entitled to receive fees from the Fund only to the extent
that the aggregate annual  operating  expenses of the Fund and the Portfolio do
not exceed .18% of the Funds ANA.

USAA Shareholder  Account  Services,  the Funds transfer agent,  assesses a $10
annual  account  maintenance  fee to  allocate  part  of  the  fixed  costs  of
maintaining  shareholder  accounts.  We  deduct  $2.50  per  quarter  from your
dividends  to pay the annual  fee.  We will waive this fee if you  maintain  an
account balance of $10,000 or more. See SHAREHOLDER  INFORMATION on page 18 for
further information.

Example of Effect of Fund's Operating Expenses

This example  provides you a comparison of investing in this Fund with the cost
of investing in other mutual funds. Although your actual costs may be higher or
lower, you would pay the following expenses on a $10,000  investment,  assuming
(1)5% annual return,  (2)the Fund's operating expenses remain the same, and (3)
you  redeem all of your shares at the end  of  the  periods shown.  The example
excludes the $10 account maintenance fee.

                              1 year    $18
                              3 years    58
                              5 years   101
                             10 years   230

FUND INVESTMENTS

Principal Investment Strategies and Risks

[SIDE BAR]
                                 HOW A MASTER-
                               FEEDER STRUCTURE
                                  OPERATES -

                                YOU BUY SHARES
                                  IN THE FUND

                                   THE FUND
                                  INVESTS IN
                                 THE PORTFOLIO

                                 THE PORTFOLIO
                                  INVESTS IN
                                    S&P 500
                                  STOCKS AND
                               OTHER SECURITIES

  Q    What is the Funds principal investment strategy?

  A    Unlike other  mutual  funds that  directly  acquire and manage their own
       portfolio securities, the Fund seeks to achieve its investment objective
       by  investing  all of its  Assets  in the  Equity  500  Index  Portfolio
       (Portfolio),  a separate  registered  investment  company  with the same
       investment  objective  as the  Fund.  Therefore,  your  interest  in the
       Portfolios securities is indirect, and the investment characteristics of
       the Fund will correspond  directly to those of the Portfolio.  This type
       of arrangement is commonly referred to as a master-feeder structure.

                                       6
<PAGE>
  Q    How do funds in a master-feeder structure operate?

  A    The  Portfolio  is  considered  a master fund.  The Fund is considered a
       feeder  fund  and  invests  all of its  Assets  in  the  Portfolio.  The
       Portfolio may also accept investments from other feeder funds, typically
       mutual funds or institutional investors. All feeder funds will invest in
       the  Portfolio  under the same  terms and  conditions  and will bear the
       Portfolios expenses in proportion to their assets.  However, each feeder
       fund can set its own transaction minimums,  fund-specific  expenses, and
       other  conditions.  Therefore,  investors in different  feeder funds may
       experience different returns.

       The Fund may withdraw its investment  from the Portfolio at any time, if
       the Board of Directors determines that it is in the best interest of the
       Fund's  shareholders  to do  so.  Certain  changes  in  the  Portfolio's
       investment objective,  policies, or restrictions may require the Fund to
       withdraw its interest in the  Portfolio.  Upon any such  withdrawal,  we
       would become  responsible for directly  managing the Assets of the Fund.
       In  addition,  the Board of  Directors  would then  consider  whether to
       invest in a different master portfolio, or take other action.

[CAUTION LIGHT GRAPHIC]
MASTER-FEEDER  STRUCTURE  RISK.  Actions of larger feeder funds may  materially
affect smaller feeder funds investing in the Portfolio. For example, if a large
feeder fund withdraws from the  Portfolio,  the remaining  funds may experience
proportionately  higher operating expenses resulting in lower returns (however,
this possibility  exists as well for traditionally  structured funds which have
large  institutional  investors).  Additionally,  the Portfolio may become less
diverse,  resulting  in increased  portfolio  risk.  Also,  feeder funds with a
greater pro rata ownership in the Portfolio could have effective voting control
of the operations of the Portfolio.

  Q    How is the Portfolio managed?

  A    The  Portfolio  is not  managed  according  to  traditional  methods  of
       "active" investment management,  which involve the buying and selling of
       securities  based upon  economic,  financial,  and market  analyses  and
       investment  judgment.  Instead,  the  Portfolio  utilizes a "passive" or
       "indexing"  investment  approach  in an attempt to match,  as closely as
       possible,  the performance of the S&P 500 Index. This is done by holding
       either all, or a representative  

                                       7
<PAGE>
       sample,  of  the  securities  in the  index.  An  index  is a  group  of
       securities  whose overall  performance  is used as a standard to measure
       investment performance.

  Q    As an investor, what are the benefits of using a "passive" or "indexing"
       approach?

  A    Indexing appeals to many investors for the following reasons:

       * provides  simplicity  because it is a straightforward  market-matching
         strategy;

       * generally  provides  diversification by investing in a wide variety of
         companies and industries;

       * tends to have lower costs  because index funds do not have many of the
         expenses of actively managed funds such as research; and

       * usually has  relatively  low trading  activity;  therefore,  brokerage
         commissions tend to be lower.

  Q    What is the Portfolio's investment policy?

  A    Under normal  conditions,  the Portfolio will invest at least 80% of its
       assets in stocks of  companies  included  in the S&P 500  Index,  except
       Bankers Trust  Corporation.  In seeking to mirror the performance of the
       S&P 500  Index,  Bankers  Trust,  the  Portfolio's  investment  adviser,
       attempts  to  allocate  the  Portfolio's  investments  among  stocks  in
       approximately  the same weightings as the S&P 500 Index,  beginning with
       the stocks that make up the larger portion of the Index's value. Bankers
       Trust may  exclude or may remove  any S&P stock from the  Portfolio,  if
       Bankers  Trust  believes  that the  stock is  illiquid  or has  impaired
       financial  conditions due to extraordinary  events.  Over the long term,
       Bankers  Trust  seeks  a  correlation  between  the  performance  of the
       Portfolio,  before  expenses,  and that of the S&P 500  Index of 0.98 or
       better.  A figure of 1.00 would indicate  perfect  correlation,  meaning
       that the  Portfolio  always  moves up in value when the Index  rises and
       down in value when the Index  declines.  In the unlikely  event that the
       targeted  correlation is not achieved,  the Portfolios Board of Trustees
       will consider alternative structures.

[CAUTION LIGHT GRAPHIC]
MARKET RISK. Because this Fund invests in stocks, it is subject to stock market
risk. Stock prices in general may decline over short or even extended  periods,
regardless of the success or failure of a company's  operations.  Stock markets
tend to run in cycles, with periods when stock prices 

                                       8
<PAGE>
generally  go up,  known as "bull"  markets,  and  periods  when  stock  prices
generally go down, referred to as "bear" markets. Stocks tend to go up and down
more than bonds.

  Q    How will Bankers Trust invest to mirror the  performance  of the S&P 500
       Index?

  A    The  Portfolio  cannot as a  practical  matter hold every one of the 500
       stocks in the S&P 500 Index.  Because it would be very  expensive to buy
       and sell all of the  stocks in the S&P 500 Index,  Bankers  Trust uses a
       "sampling" technique.

       * First  -- the  Portfolio  buys  the  stocks  that  make up the  larger
         portions of the Index's  value in roughly the same  proportion  as the
         Index.

       * Second -- smaller  stocks  are  analyzed  and  selected.  In  choosing
         smaller  stocks,  the  Portfolio  tries to match the industry and risk
         characteristics  of all of the  small  companies  in the S&P 500 Index
         without buying all of those stocks.

       * Third -- the Portfolio  may invest in S&P 500 Index futures  contracts
         and similar instruments.

       This approach  allows the Portfolio to maintain  sufficient cash to meet
       redemption requests while minimizing costs.

  Q    Will the Portfolio purchase other types of securities?

  A    Under normal conditions, Bankers Trust will attempt to invest as much of
       the Portfolio's assets as is practical in stocks included in the S&P 500
       Index.  However,  the  Portfolio  may  hold up to 20% of its  assets  in
       short-term  debt  securities,  money market  instruments and stock index
       futures and options.

       For a  description  of the futures and options the Portfolio may use and
       some of their associated risks, see APPENDIX A on page 22.

[CAUTION LIGHT GRAPHIC]
CASH  FLOW  RISK.  The  ability  of the Fund and the  Portfolio  to meet  their
investment objectives depends to some extent on the cash flow in and out of the
Fund and other investors in the Portfolio. When a shareholder buys or sells the
Fund's  shares,  the  Portfolio  generally  has to buy or  sell  stocks  in its
portfolio.  Changes in the Fund's cash flow  affect how  closely the  Portfolio
mirrors the S&P 500 Index.
                                       9
<PAGE>

INVESTMENTS  IN OPTIONS AND FUTURES.  The  Portfolio  may invest,  to a limited
extent,  in stock index futures or options.  The  Portfolio  will not use these
derivative  instruments  for speculative  purposes or as leveraged  investments
that magnify the gains or losses of an  investment.  Bankers  Trust  invests in
stock  index  futures  and  options  to keep  cash on hand to meet  shareholder
redemptions or other needs while simulating full  investments in stocks.  These
investments  tend to reduce the Portfolios  transaction  cost or add value when
these  instruments are favorably  priced.  Risks associated with investments in
futures and options include the risk that the futures or options  contract will
not fully offset the underlying position and investments in futures and options
used for risk  management  may not have the intended  effects and may result in
losses or missed opportunities.

[SIDE BAR]
FUTURES CONTRACTS AND OPTIONS ON FUTURES CONTRACTS ARE USED AS A LOW COST 
METHOD OF GAINING EXPOSURE TO A PARTICULAR SECURITIES MARKET WITHOUT INVESTING
DIRECTLY IN THOSE SECURITIES

If the Portfolio  invests in futures contracts and options on futures contracts
for  non-hedging  purposes,  the margin  and  premiums  required  to make those
investments  will not exceed 5% of the Fund's net asset value after taking into
account unrealized  profits and losses on the contracts.  Futures contracts and
options on futures  contracts used for  non-hedging  purposes  involve  greater
risks than stock investments.

Additional Information on the S&P 500 Index

[SIDE BAR]
                                    MARKET
                                CAPITALIZATION
                                    EQUALS
                                  # OF SHARES
                                  OUTSTANDING
                                 MULTIPLIED BY
                                  THE STOCK'S
                                 CURRENT PRICE

Stocks  in  the  S&P  500  Index  are   weighted   according  to  their  market
capitalization.  Bankers  Trust  believes that the  performance  of the S&P 500
Index is  representative of the performance of publicly traded common stocks in
general.  S&P  determines  the  composition  of the S&P 500 Index based on such
factors as the market capitalization and trading activity of each stock and its
adequacy as a  representation  of stocks in a particular  industry  group.  The
composition may change from time to time.

The Fund and the Portfolio are not  sponsored,  endorsed,  sold, or promoted by
S&P. S&P makes no representation or warranty, express or implied, to the owners
of the  Fund  or the  Portfolio  or any  member  of the  public  regarding  the
advisability  of  investing  in  securities  generally  or in the  Fund and the
Portfolio  particularly  or the  ability of the S&P 500 Index to track  general
stock  market  performance.  S&P does not  guarantee  the  accuracy  and/or the
completeness of the S&P 500 Index or any data included therein.

S&P makes no warranty,  express or implied, as to the results to be obtained by
the Fund or the Portfolio,  owners of the Fund or the  Portfolio,  or any other
person  or  entity  from  the use of the S&P 500  Index  or any  data  included
therein.  S&P makes no  express  or implied  warranties  and  hereby  expressly
disclaims all such  warranties of  merchantability  or fitness for a particular
purpose or use with respect to the S&P 500 Index or any data included therein.

                                      10
<PAGE>
FUND AND PORTFOLIO MANAGEMENT

The Board of Directors of USAA Mutual Fund, Inc.  (Company),  of which the Fund
is a series, supervises the business affairs of the Company, while the business
affairs  of the  Portfolio  are  subject  to the  supervision  of its  Board of
Trustees. No Director of the Company also serves as a Trustee of the Portfolio.

USAA Investment Management Company

The Company has retained us, USAA Investment  Management  Company,  to serve as
the manager,  investment  adviser,  and distributor for the Company.  We are an
affiliate  of  United  Services   Automobile   Association   (USAA),  a  large,
diversified financial services institution.  As of the date of this Prospectus,
we had approximately $40 billion in total assets under management.  Our mailing
address is 9800 Fredericksburg Road, San Antonio, TX 78288.

We provide  certain  management  services to the Fund. We are  responsible  for
monitoring the services provided to the Portfolio by Bankers Trust,  subject to
the  authority of and  supervision  by the  Company's  Board of  Directors.  We
receive no fee for providing these monitoring  services.  However, in the event
the Company's Board of Directors  determines it is in the best interests of the
Fund's  shareholders  to withdraw its investment in the Portfolio,  we would be
responsible for directly managing the Assets of the Fund. In such an event, the
Fund would pay us an annual fee of one-tenth  of one percent  (.10%) of average
net assets, accrued daily and paid monthly. We also provide services related to
selling the Fund's shares and receive no compensation for those services.

Although  our  officers and  employees,  as well as those of the  Company,  may
engage  in  personal  securities  transactions,  they  are  restricted  by  the
procedures in a Joint Code of Ethics adopted by the Company and us.

Bankers Trust Company

At the  present  time,  the  Company  seeks to achieve  the  Fund's  investment
objective by investing  all the Fund's Assets in the  Portfolio.  The Portfolio
has retained the services of Bankers Trust Company,  with  headquarters  at 130
Liberty Street, New York, New York 10006, as investment adviser.

Bankers Trust is a worldwide  merchant bank dedicated to servicing the needs of
corporations,   governments,   financial  institutions,  and  private  clients.
Investment management is a core business of Bankers Trust with assets under its
global management totaling $338 billion as of December 31, 1998. Of that total,
approximately $156 billion are in U.S. assets.

Bankers  Trust is a wholly  owned  subsidiary  of  Bankers  Trust  Corporation.
Bankers Trust Corporation has entered into an Agreement and Plan of
                                      11
<PAGE>
Merger with  Deutsche  Bank AG,  dated as of  November  30,  1998,  under which
Bankers  Trust  Corporation  would merge with and into a subsidiary of Deutsche
Bank AG. Deutsche Bank AG is a major global banking institution that is engaged
in a wide range of financial services, including investment management,  mutual
funds, retail and commercial banking,  investment banking,  and insurance.  The
transaction is contingent upon various regulatory  approvals,  and continuation
of the  Portfolio's  advisory  relationship  with Bankers  Trust  thereafter is
subject  to  the  approval  of  the  Portfolio's  Board  of  Trustees  and  the
Portfolio's  shareholders.  If  the  transaction  is  approved  and  completed,
Deutsche  Bank AG, as Bankers  Trusts  new parent  company,  will  control  its
operations as Investment  Adviser.  Bankers Trust believes that, under this new
arrangement,  the  services  provided to the Fund will be  maintained  at their
current level.

Under its Investment Advisory Agreement,  Bankers Trust receives a fee from the
Portfolio,  computed daily and paid monthly, at the annual rate of .075% of the
average daily net assets of the Portfolio.

Portfolio Turnover

The annual  portfolio  turnover rate measures the frequency  that the Portfolio
sells and replaces the value of its  securities  for a given period.  We do not
expect the Fund to have a high portfolio turnover rate.

Portfolio Manager

Frank  Salerno,  Managing  Director of Bankers Trust,  is  responsible  for the
day-to-day  management of the Portfolio and has managed the Portfolio since its
inception  in 1992.  Mr.  Salerno has 16 years  investment  experience  and has
worked for Bankers Trust for 18 years. He holds an MBA from New York University
and a BS from Syracuse University.

Administrator

Under the  Administration  Agreement  with the Fund, we calculate the net asset
value of the Fund and generally  assist the Company's Board of Directors in all
aspects of the  administration  and operation of the Fund.  The  Administration
Agreement  provides  for the  Fund to pay us a fee,  computed  daily  and  paid
monthly, at an annual rate equal to the lesser of (1) .06% of the average daily
net  assets  of the Fund or (2) the  amount  that  brings  the  total  Fund and
Portfolio annual  operating  expenses as a percentage of the Fund's average net
assets up to .18%. We may also delegate one or more of our  responsibilities to
others, at our expense.

Under an  Administration  and Services  Agreement with the  Portfolio,  Bankers
Trust calculates the value of the assets of the Portfolio and generally assists
                                     12
<PAGE>
the  Portfolio's  Board of Trustees in all  aspects of the  administration  and
operation of the Portfolio.  The Administration and Services Agreement provides
for the Portfolio to pay Bankers Trust a fee,  computed daily and paid monthly,
at an annual rate equal to the lesser of (1) .005% of the  Portfolio's  average
daily net  assets or (2) the amount  that  brings  the total  Portfolio  annual
operating expenses as a percentage of the Portfolio's  average net assets up to
 .08%.  Bankers Trust may also delegate one or more of its  responsibilities  to
others,  at Bankers  Trust's  expense.  See  ADMINISTRATOR  in the Statement of
Additional Information for further information.

USING MUTUAL FUNDS IN AN INVESTMENT PROGRAM

I. The Idea Behind Mutual Funds

Mutual funds provide small investors some of the advantages  enjoyed by wealthy
investors.  A  relatively  small  investment  can  buy  part  of a  diversified
portfolio. That portfolio is managed by investment professionals, relieving you
of the  need to make  individual  stock  or bond  selections.  You  also  enjoy
conveniences,  such as daily  pricing,  liquidity,  and in the case of the USAA
Family of Funds, no sales charge. The portfolio, because of its size, has lower
transaction  costs on its trades than most individuals would have. As a result,
you own an investment  that in earlier times would have been  available only to
very wealthy people.

II. Using Funds in an Investment Program

In  choosing a mutual  fund as an  investment  vehicle,  you are giving up some
investment decisions,  but must still make others. The decisions you don't have
to make are those involved with choosing individual  securities.  An investment
adviser  will  perform  that  function.  In  addition,  we will arrange for the
safekeeping of securities,  auditing the annual financial statements, and daily
valuation of the Fund, as well as other functions.

You,  however,  retain  at  least  part of the  responsibility  for an  equally
important  decision.  This decision involves  determining a portfolio of mutual
funds that balances your  investment  goals with your tolerance for risk. It is
likely that this decision may include the use of more than one fund of the USAA
Family of Funds.

For example,  assume you wish to invest in a widely  diversified,  common stock
portfolio.  You could  combine  an  investment  in the S&P 500 Index  Fund with
investments  in other  mutual  funds  that  invest in stocks of large and small
companies  and  high-dividend  stocks.  This is just one way you could  combine
funds to fit your own risk and reward goals.

                                      13
<PAGE>
III. USAA's Family of Funds

We offer you  another  alternative  with our  asset  strategy  funds  listed in
APPENDIX B under asset allocation on page 24. These unique mutual funds provide
a  professionally  managed,  diversified  investment  portfolio within a mutual
fund.  Designed for the individual who prefers to delegate the asset allocation
process to an investment  manager,  their  structure  achieves  diversification
across a number of investment categories.

Whether you prefer to create  your own mix of mutual  funds or use a USAA Asset
Strategy  Fund,  the USAA  Family of Funds  provides  a broad  range of choices
covering   just  about  any   investors   investment   objectives.  Our  member
service representatives stand ready to assist you with your choices and to help
you craft a portfolio to meet your  needs. Refer to APPENDIX B on page 24 for a
complete list of the USAA Family of No-Load Mutual Funds.

HOW TO INVEST

Purchase of Shares

OPENING AN ACCOUNT

You may open an account and make an investment  as described  below by mail, in
person,  bank wire,  electronic  funds  transfer  (EFT),  or phone. A complete,
signed application is required to open your initial account. However, after you
open  your  initial  account  with us,  you  will not need to fill out  another
application to open another Fund unless the registration is different.

TAX ID NUMBER

Each shareholder  named on the account must provide a social security number or
tax identification number to avoid possible withholding requirements.

EFFECTIVE DATE

When you make a purchase, your purchase price will be the net asset value (NAV)
per share next  determined  after we receive your  request in proper form.  The
Fund's NAV is determined at the close of the regular trading session (generally
4:00 p.m. Eastern Time) of the New York Stock Exchange (NYSE) each day the NYSE
is open.  If we receive  your  request  and  payment  prior to that time,  your
purchase price will be the NAV per share determined for that day. If we receive
your  request or payment  after the NAV per share is  calculated,  the purchase
will be effective on the next business day. 

If you plan to  purchase  Fund  shares  with a foreign  check,  we suggest  you
convert your foreign  check to U.S.  dollars  prior to  investment in the Fund.
This will avoid a potential  delay in the effective date of your purchase of up
to four  to six  weeks.  Furthermore,  a bank  charge  may be  assessed  in the
clearing process, which will be deducted from the amount of the purchase.

                                       14
<PAGE>
MINIMUM INVESTMENTS

INITIAL PURCHASE

[MONEY GRAPHIC]
*    $3,000 [$2,000 for IRAs]

ADDITIONAL PURCHASES

*    $50.  Employees of USAA and its  affiliated  companies may open an account
     through  payroll  deduction  for as  little as $25 per pay  period  with a
     $3,000 initial investment.

HOW TO PURCHASE

MAIL

[ENVELOPE GRAPHIC]
*    To open an account, send your application and check to:
       USAA Investment Management Company
       9800 Fredericksburg Road
       San Antonio, TX 78288

*    To add to your account, send your check and the "Invest by Mail" stub that
     accompanies your Fund's transaction confirmation to the Transfer Agent:
       USAA Shareholder Account Services
       9800 Fredericksburg Road
       San Antonio, TX 78288

IN PERSON

[HANDSHAKE GRAPHIC]
*    To open an account, bring your application and check to:
       USAA Investment Management Company
       USAA Federal Savings Bank
       10750 Robert F. McDermott Freeway
       San Antonio, TX 78288

BANK WIRE

[WIREGRAPHIC] 
*    To open or add to your account, instruct your bank (which may charge a fee
     for the  service) to wire the specified amount to the Fund as follows:
       State Street Bank and Trust Company
       Boston, MA 02101
       ABA#011000028
       Attn: USAA S&P 500 Index Fund
       USAA Account Number: 69384998
       Shareholder(s) Name(s)____________________________________________
       Shareholder(s) Mutual Fund Account Number_________________________

                                      15
<PAGE>
ELECTRONIC FUNDS TRANSFER

[CALENDAR GRAPHIC]
*    Additional  purchases  on a  regular  basis  can be  deducted  from a bank
     account, paycheck,  income-producing investment, or USAA money market fund
     account.  Sign up for these  services  when  opening  an  account  or call
     1-800-531-8448 to add these services.

PHONE 1-800-531-8448

[TELEPHONE GRAPHIC]

*    If you have an existing  USAA mutual fund account and would like to open a
     new account or exchange to another USAA Fund,  call for  instructions.  To
     open an account by phone, the new account must have the same  registration
     as your existing account.

Redemption of Shares

You may redeem Fund shares by any of the methods described below on any day the
NAV per share is calculated.  Redemptions are effective on the day instructions
are received in a manner as  described  below.  However,  if  instructions  are
received  after  the NAV per share  calculation  (generally  4:00 p.m.  Eastern
Time), redemption will be effective on the next business day.

We will send you your  money  within  seven days  after the  effective  date of
redemption.  Payment for redemption of shares purchased by EFT or check is sent
after the EFT or check has  cleared,  which  could  take up to 15 days from the
purchase date. If you are considering redeeming shares soon after purchase, you
should  purchase by bank wire or certified  check to avoid  delay.  For federal
income tax purposes,  a redemption  is a taxable  event;  and as such,  you may
realize a capital gain or loss.  Such capital  gains or losses are based on the
difference  between your cost basis in the shares and the price  received  upon
redemption.

In  addition,  the  Company may elect to suspend  the  redemption  of shares or
postpone the date of payment in limited circumstances.

HOW TO REDEEM

WRITTEN, FAX, TELEGRAM, OR TELEPHONE

[FAX MACHINE GRAPHIC]
*    Send  your  written  instructions  to:
       USAA  Shareholder  Account  Services
       9800 Fredericksburg Road
       San Antonio, TX 78288

*    Send  a  signed  fax  to  1-800-292-8177,  or  send  a  telegram  to  USAA
     Shareholder Account Services.

*    Call toll free 1-800-531-8448, in San Antonio, 456-7202.

Telephone redemption privileges are automatically established when you complete
your application. The Fund will employ reasonable procedures to

                                      16
<PAGE>
confirm that instructions communicated by telephone are genuine; and if it does
not,  it may be  liable  for  any  losses  due to  unauthorized  or  fraudulent
instructions.  Before any  discussion  regarding  your  account,  the following
information is obtained: (1) USAA number and/or account number, (2) the name(s)
on the account registration,  and (3) social security/tax identification number
or  date  of  birth  of  the  registered   account  owner(s)  for  the  account
registration.  Additionally, all telephone communications with you are recorded
and confirmations of account transactions are sent to the address of record. If
you were issued stock  certificates  for your shares,  redemption by telephone,
fax, or telegram is not available.

IMPORTANT INFORMATION ABOUT PURCHASES AND REDEMPTIONS

[INVESTOR'S GUIDE GRAPHIC]
Investor's Guide to USAA Mutual Fund Services

Upon your initial  investment with us, you will receive the INVESTOR'S GUIDE to
help you get the most out of your USAA mutual fund account and to assist you in
your role as an investor.  In the INVESTOR'S  GUIDE,  you will find  additional
information on purchases,  redemptions,  and methods of payment.  You will also
find in-depth information on automatic investment plans, shareholder statements
and reports, and other useful information.

Company Rights

The Company reserves the right to:

*    reject  purchase  or  exchange  orders  when in the best  interest  of the
     Company;

*    limit or  discontinue  the  offering  of  shares of any  portfolio  of the
     Company without notice to the shareholders;

*    impose a  redemption  charge of up to 1% of the net asset  value of shares
     redeemed  if  circumstances   indicate  a  charge  is  necessary  for  the
     protection of remaining investors (for example, if excessive market-timing
     share activity unfairly burdens  long-term  investors);  however,  this 1%
     charge will not be imposed  upon  shareholders  unless  authorized  by the
     Board of Directors and the required notice has been given to shareholders;

*    require a  signature  guarantee  for  transactions  or  changes in account
     information in those  instances where the  appropriateness  of a signature
     authorization  is in question.  The  Statement of  Additional  Information
     contains information on acceptable guarantors;

*    redeem an account with less than 10 shares, with certain limitations.

                                      17
<PAGE>
EXCHANGES

Exchange Privilege

The exchange privilege is automatic when you complete your application. You may
exchange  shares  among Funds in the USAA Family of Funds,  provided you do not
hold these shares in stock  certificate  form and the shares to be acquired are
offered in your state of residence.  After we receive the exchange orders,  the
Fund's  transfer agent will  simultaneously  process  exchange  redemptions and
purchases  at  the  share  prices  next  determined.  The  investment  minimums
applicable to share  purchases also apply to exchanges.  For federal income tax
purposes,  an exchange  between Funds is a taxable event;  and as such, you may
realize a capital gain or loss.  Such capital  gains or losses are based on the
difference  between your cost basis in the shares and the price  received  upon
exchange.

The Fund has undertaken certain procedures regarding telephone  transactions as
described on page 16.

Exchange Limitations, Excessive Trading

To  minimize  Fund costs and to protect the Funds and their  shareholders  from
unfair expense burdens,  the Funds restrict excessive  exchanges.  The limit on
exchanges  out of any Fund in the USAA Family of Funds for each  account is six
per calendar  year (except  there is no  limitation on exchanges out of the Tax
Exempt Short-Term Fund,  Short-Term Bond Fund, or any of the money market funds
in the USAA Family of Funds).

SHAREHOLDER INFORMATION

Share Price Calculation

                                 NAV PER SHARE
                                    EQUALS
                                 TOTAL ASSETS
                                     MINUS
                                  LIABILITIES
                                  DIVIDED BY
                                  # OF SHARES
                                  OUTSTANDING

The price at which you  purchase  and  redeem  Fund  shares is equal to the net
asset value (NAV) per share determined on the effective date of the purchase or
redemption.  You may buy and sell Fund  shares  at the NAV per share  without a
sales charge. The Funds NAV per share is calculated at the close of the regular
trading  session of the NYSE,  which is usually  4:00 p.m.  Eastern  Time.  The
Portfolio's  securities  and other assets are valued  primarily on the basis of
market quotations or, if quotations are not readily available, by a method that
the Portfolio's Board of Trustees believes accurately reflects fair value.

Dividends and Distributions

The Fund pays net investment income dividends quarterly.  Any net capital gains
generally will be distributed at least annually.  The Fund will make additional
payments to shareholders,  if necessary, to avoid the imposition of any federal
income or excise tax.
                                      18
<PAGE>
We  will   automatically   reinvest  all  income  dividends  and  capital  gain
distributions  in the Fund unless you instruct us differently.  The share price
will be the NAV of the Fund shares computed on the ex-dividend date. Any income
dividends  or capital gain  distributions  paid by the Fund will reduce the NAV
per share by the amount of the dividend or  distribution.  You should  consider
carefully  the  effects of  purchasing  shares of the Fund  shortly  before any
dividend or distribution. Although in effect this would be a return of capital,
some or all of these dividends and distributions are subject to taxes.

If  your  account  balance  is less  than  $10,000,  the  Transfer  Agent  will
automatically  deduct a $10 annual  account  maintenance  fee from the dividend
income paid to your account.  The $10 account  maintenance fee is deducted at a
rate of $2.50 per quarter from the  dividend.  If the dividend to be paid to an
account is less than the fee to be deducted,  a sufficient number of shares may
be redeemed from an account to make up the difference.  Any account maintenance
fee deducted  from your  account will be treated as taxable  income even though
not received by you. The annual account  maintenance fee may be changed upon at
least 30 days' notice to you.

We will invest any  dividend  or  distribution  payment  returned to us in your
account at the  then-current NAV per share.  Dividend and  distribution  checks
become  void six months  from the date on the  check.  The amount of the voided
check will be invested in your account at the then-current NAV per share.

Federal Taxes

This tax  information  is quite  general and refers to the  federal  income tax
provisions in effect as of the date of this Prospectus.  Note that the Taxpayer
Relief  Act  of  1997  and  the  technical   provisions   adopted  by  the  IRS
Restructuring  and Reform Act of 1998 may  affect the status and  treatment  of
certain  distributions   shareholders  receive  from  the  Fund.  Because  each
investor's tax circumstances are unique and because the tax laws are subject to
change, we recommend that you consult your tax advisor about your investment.

SHAREHOLDER -- Dividends from taxable net investment  income and  distributions
of net short-term capital gains are taxable to you as ordinary income,  whether
received  in cash or  reinvested  in  additional  shares.  A  portion  of these
dividends  may qualify for the 70%  dividends-received  deduction  available to
corporations.
                                      19
<PAGE>
Regardless  of the length of time you have held the Fund shares,  distributions
of net long-term  capital gains are taxable as long-term  capital gains whether
received in cash or reinvested in additional shares.

WITHHOLDING  -- Federal law requires the Fund to withhold and remit to the U.S.
Treasury a portion of the income dividends and capital gain  distributions  and
proceeds of redemptions paid to any non-corporate shareholder who:

*    fails to furnish the Fund with a correct tax identification number,
*    underreports dividend or interest income, or
*    fails to certify that he or she is not subject to withholding.

To avoid this withholding requirement, you must certify on your application, or
on a separate  Form W-9 supplied by the Fund's  transfer  agent,  that your tax
identification  number is correct and you are not  currently  subject to backup
withholding.

REPORTING -- The Fund will report  information  to you annually  concerning the
tax status of dividends and distributions for federal income tax purposes.

Year 2000

Like other organizations around the world, the Fund could be adversely affected
if the computer systems used by the Fund, its service  providers,  or companies
in which the Fund invests do not  properly  process and  calculate  information
that relates to dates beginning on January 1, 2000, and beyond.  This situation
may occur because for many years computer  programmers  used only two digits to
describe  years,  such as 98 for 1998. A program written in this manner may not
work when it encounters the year 00. To confront this situation, USAA companies
have spent much effort and money;  and we expect to have our systems  ready for
the Year 2000 by mid-1999. In addition, we are actively assessing the Year 2000
readiness of our service providers, partners, and companies in whose securities
we invest.  It is not possible for us to say that you will experience no effect
from this situation,  but we can say that we are making a large effort to avoid
any ill effects upon our  shareholders.

We do believe you are entitled to know with certainty that we will stand behind
your share balance as of the close of business in 1999. When the market reopens
in 2000,  should any computer problem cause a change in the number of shares in
your account, we will return your account to its proper share balance

                                       20
<PAGE>
FINANCIAL HIGHLIGHTS

The financial  highlights  table is intended to help you  understand the Fund's
financial  performance since inception.  Certain information reflects financial
results for a single Fund share.  The total returns in the table  represent the
rate that an investor  would have earned (or lost) on an investment in the Fund
(assuming  reinvestment of all dividends and  distributions).  This information
has been audited by  PricewaterhouseCoopers  LLP, whose report,  along with the
Fund's  financial  statements,  is  included  in the  Annual  Report,  which is
available upon request.


                                                                   Eight Months
                                                                       Ended
                                          Year Ended December 31,  December 31,
                                      -----------------------------------------
                                            1998           1997        1996*
                                      -----------------------------------------

PER SHARE OPERATING PERFORMANCE
Net Asset Value at Beginning of Period    $15.16         $11.57         $10.00
                                       ----------------------------------------
Income from Investment Operations:
  Net Investment Income                      .21            .21            .12
  Net Realized and Unrealized Gain on
   Investment and Futures Transactions      4.11           3.59           1.57
                                      ----------------------------------------
Total from Investment Operations            4.32           3.80           1.69
Distributions from Net Investment Income    (.21)          (.21)          (.12)
                                      ----------------------------------------
Net Asset Value at End of Period          $19.27         $15.16         $11.57
                                      ========================================
Total Return (%)**                         28.62          33.03          16.90

SUPPLEMENTAL DATA AND RATIOS

Net Assets at End of Period (000)     $1,855,855       $630,619       $179,073
Ratios to Average Net Assets:
  Net Investment Income (%)                 1.40           1.64           2.09a
  Expenses, including Expenses of the
   Equity 500 Index Portfolio (%)            .18            .18            .18a
  Decrease Reflected in Above Expense
   Ratio Due to Absorption of Expenses
   by Bankers Trust and the Manager (%)      .02            .07            .15a

- --------------
*    Fund commenced operations May 1, 1996.
**   Assumes  reinvestment  of all  dividend  income  distributions  during the
     period; does not reflect $10 annual account maintenance fee.
a    Annualized.  The  ratio is not  necessarily  indicative  of 12  months  of
     operations.

                                      21
<PAGE>
                                   APPENDIX A

THE  FOLLOWING  ARE  DESCRIPTIONS  OF CERTAIN  TYPES OF SECURITIES IN WHICH THE
PORTFOLIO'S ASSETS MAY BE INVESTED:

OPTIONS ON STOCK INDICES

The  Portfolio  may purchase  and write put and call  options on stock  indices
listed on stock exchanges.  A stock index fluctuates with changes in the market
values of the stocks included in the index.

Options on stock indices are generally  similar to options on stock except that
the delivery requirements are different. Instead of giving the right to take or
make delivery of stock at a specified  price,  an option on a stock index gives
the holder the right to receive a cash  "exercise  settlement  amount" equal to
(a) the amount, if any, by which the fixed exercise price of the option exceeds
(in the  case of a put) or is less  than (in the  case of a call)  the  closing
value of the  underlying  index on the date of  exercise,  multiplied  by (b) a
fixed  "index  multiplier".  Receipt of this cash  amount  will depend upon the
closing  level of the stock index upon which the option is based being  greater
than,  in the case of a call,  or less than, in the case of a put, the exercise
price  of the  option.  The  amount  of cash  received  will be  equal  to such
difference between the closing price of the index and the exercise price of the
option  expressed  in dollars  times a  specified  multiple.  The writer of the
option is obligated,  in return for the premium  received,  to make delivery of
this amount. The writer may offset its position in stock index options prior to
expiration by entering into a closing  transaction on an exchange or the option
may expire unexercised.

[CAUTION  LIGHT  GRAPHIC]
     Because the value of an index option  depends upon  movements in the level
     of the index  rather  than the price of a  particular  stock,  whether the
     Portfolio  will  realize a gain or loss from the  purchase  or  writing of
     options on an index depends upon movements in the level of stock prices in
     the stock  market  generally  or, in the case of  certain  indices,  in an
     industry or market segment. Accordingly, the Portfolio's successful use of
     options on stock  indices  will be subject to Bankers  Trust's  ability to
     predict correctly movements in the direction of the stock market generally
     or of a particular industry. This requires different skills and techniques
     than predicting changes in the price of individual stocks.

FUTURES CONTRACTS ON STOCK INDICES

The Portfolio may enter into contracts  providing for the making and acceptance
of a cash settlement  based upon changes in the value of an index of securities
(Futures  Contracts).  This  investment  technique  is  designed  only to hedge
against  anticipated  future  changes in general  market prices that  otherwise
might either  adversely affect the value of securities held by the Portfolio or
adversely affect the prices of securities which are intended to be purchased at
a later date for the Portfolio.  A Futures Contract may also be entered into to
close out or offset an existing futures position.

                                      22
<PAGE>
In general, each transaction in Futures Contracts involves the establishment of
a position  that will move in a direction  opposite  to that of the  investment
being  hedged.  If these  hedging  transactions  are  successful,  the  futures
positions  taken  for the  Portfolio  will  rise in  value  by an  amount  that
approximately  offsets the  decline in value of the  portion of the  Portfolios
investments  which are being hedged.  Should  general  market prices move in an
unexpected manner,  the full anticipated  benefits of Futures Contracts may not
be achieved or a loss may be realized.

[CAUTION LIGHT GRAPHIC]
     Although  Futures  Contracts  would be  entered  into for cash  management
     purposes only, such  transactions  do involve  certain risks.  These risks
     could include a lack of correlation  between the Futures Contracts and the
     equity market being hedged; a potential lack of liquidity in the secondary
     market and incorrect  assessments  of market  trends,  which may result in
     poorer overall performance than if a Futures Contract had not been entered
     into.

Brokerage  costs will be incurred and  "initial  margin" will be required to be
posted  and  maintained  as  a  good-faith   deposit  against   performance  of
obligations under Futures  Contracts  written for the Portfolio.  The Portfolio
may not purchase or sell a Futures  Contract or options  thereon if immediately
thereafter its margin  deposits on its  outstanding  Futures  Contracts and its
premium paid on outstanding options thereon would exceed 5% of the market value
of the Portfolio's total assets.

OPTIONS ON FUTURES CONTRACTS

The  Portfolio  may invest in options on such  Futures  Contracts  for  similar
purposes.

ASSET COVERAGE

The Portfolio will cover  transactions in futures and related options,  as well
as   when-issued   and    delayed-delivery   as   required   under   applicable
interpretations of the Securities and Exchange Commission, either by owning the
underlying  securities or segregating  with the  Portfolio's  Custodian  liquid
securities  in an amount at all times  equal to or  exceeding  the  Portfolio's
commitment with respect to these instruments or contracts.

ILLIQUID SECURITIES

The Portfolio may invest up to 15% of the market value of the  Portfolio's  net
assets  in  securities  that  are  illiquid.   Illiquid  securities  are  those
securities  which  cannot be disposed of in the  ordinary  course of  business,
seven  days or less,  at  approximately  the value at which the  Portfolio  has
valued the securities.

                                      23
<PAGE>
                                   APPENDIX B

USAA Family of No-Load Mutual Funds

The USAA Family of No-Load Mutual Funds includes a variety of Funds,  each with
different objectives and policies. In combination,  these Funds are designed to
provide you with the opportunity to formulate your own investment program.  You
may  exchange  any shares you hold in any one USAA Fund for shares in any other
USAA Fund. For more complete  information  about other Funds in the USAA Family
of Funds,  including  charges and expenses,  call us for a Prospectus.  Read it
carefully before you invest or send money.

        FUND
      TYPE/NAME                             VOLATILITY
===============================================================
CAPITAL APPRECIATION
- ---------------------------------------------------------------
Aggressive Growth                        Very high
Emerging Markets (1)                     Very high
First Start Growth                       Moderate to high
Gold (1)                                 Very high
Growth                                   Moderate to high
Growth & Income                          Moderate
International (1)                        Moderate to high
S&P 500 Index (2)                        Moderate
Science & Technology                     Very high
World Growth (1)                         Moderate to high
- ---------------------------------------------------------------
ASSET ALLOCATION
- ---------------------------------------------------------------
Balanced Strategy (1)                    Moderate
Cornerstone Strategy (1)                 Moderate
Growth and Tax Strategy                  Moderate
Growth Strategy (1)                      Moderate to high
Income Strategy                          Low to moderate
- ---------------------------------------------------------------
INCOME - TAXABLE
- ---------------------------------------------------------------
GNMA                                     Low to moderate
Income                                   Moderate
Income Stock                             Moderate
Short-Term Bond                          Low
- ---------------------------------------------------------------
INCOME - TAX EXEMPT
- ---------------------------------------------------------------
Long-Term (3)                            Moderate
Intermediate-Term (3)                    Low to moderate
Short-Term (3)                           Low
State Bond/Income (3,4)                  Moderate
- ---------------------------------------------------------------
MONEY MARKET
- ---------------------------------------------------------------
Money Market (5)                         Very low
Tax Exempt Money Market (3,5)            Very low
Treasury Money Market Trust (5)          Very low
State Money Market (3,4,5)               Very low
===============================================================

1  FOREIGN   INVESTING  IS  SUBJECT  TO  ADDITIONAL  RISKS,  SUCH  AS  CURRENCY
   FLUCTUATIONS, MARKET ILLIQUIDITY, AND POLITICAL INSTABILITY.

2  S&P(R) IS A  TRADEMARK  OF THE  MCGRAW-HILL  COMPANIES,  INC.,  AND HAS BEEN
   LICENSED FOR USE. THE PRODUCT IS NOT SPONSORED, SOLD OR PROMOTED BY STANDARD
   & POOR'S,  AND  STANDARD  & POOR'S  MAKES NO  REPRESENTATION  REGARDING  THE
   ADVISABILITY OF INVESTING IN THE PRODUCT.

3  SOME INCOME MAY BE SUBJECT TO STATE OR LOCAL TAXES.

4  CALIFORNIA, FLORIDA, NEW YORK, TEXAS, AND VIRGINIA FUNDS ARE OFFERED ONLY TO
   RESIDENTS OF THOSE STATES.

5  AN  INVESTMENT  IN A MONEY MARKET FUND IS NOT INSURED OR  GUARANTEED  BY THE
   FDIC OR ANY OTHER GOVERNMENT AGENCY. ALTHOUGH THE FUND SEEKS TO PRESERVE THE
   VALUE OF YOUR INVESTMENT  AT $1 PER SHARE,  IT IS  POSSIBLE TO LOSE MONEY BY
   INVESTING IN THE FUND.

                                      24
<PAGE>
If you would like more information about the Fund, you may call  1-800-531-8181
to request a free copy of the Fund's Statement of Additional Information (SAI),
Annual or Semiannual  Report, or to ask other questions about the Fund. The SAI
has been filed with the Securities and Exchange Commission (SEC) and is legally
a part  of the  Prospectus.  In the  Fund's  Annual  Report,  you  will  find a
discussion  of  the  market   conditions   and   investment   strategies   that
significantly affected the Fund's performance during the last fiscal year.

To view these documents,  along with other related documents, you can visit the
SEC's  Internet  web  site  (http://www.sec.gov)  or  the  Commission's  Public
Reference Room in Washington,  D.C.  Information on the operation of the public
reference room can be obtained by calling 1-800-SEC-0330.  Additionally, copies
of this  information  can be obtained,  for a  duplicating  fee, by writing the
Public Reference Section of the Commission, Washington, D.C. 20549-6009.

                INVESTMENT ADVISER, UNDERWRITER AND DISTRIBUTOR
                       USAA Investment Management Company
                            9800 Fredericksburg Road
                            San Antonio, Texas 78288
                -----------------------------------------------
             TRANSFER AGENT                           CUSTODIAN
    USAA Shareholder Account Services    State Street Bank and Trust Company
        9800 Fredericksburg Road                    P.O. Box 1713
       San Antonio, Texas 78288                Boston, Massachusetts 02105
                -----------------------------------------------
                           TELEPHONE ASSISTANCE HOURS
                         Call toll free - Central Time
                     Monday - Friday 7:30 a.m. to 8:00 p.m.
                        Saturdays 8:30 a.m. to 5:00 p.m.
               ------------------------------------------------
                   FOR ADDITIONAL INFORMATION ON MUTUAL FUNDS
                   1-800-531-8181, (in San Antonio) 456-7211
                For account servicing, exchanges or redemptions
                   1-800-531-8448, (in San Antonio) 456-7202
                -----------------------------------------------
                       RECORDED MUTUAL FUND PRICE QUOTES
                        24-Hour Service (from any phone)
                   1-800-531-8066, (in San Antonio) 498-8066
                -----------------------------------------------
                            MUTUAL FUND TOUCHLINE sm
                          (from Touchtone phones only)
              For account balance, last transaction or fund prices
                   1-800-531-8777, (in San Antonio) 498-8777

                   Investment Company Act File No. 811-2429

                                      25
<PAGE>

USAA    USAA                                        STATEMENT OF
EAGLE   MUTUAL                                      ADDITIONAL INFORMATION
LOGO    FUND, INC.
                                                    May 1, 1999

- -------------------------------------------------------------------------------

                             USAA MUTUAL FUND, INC.
                               S&P 500 Index Fund

USAA MUTUAL  FUND,  INC.  (the  Company)  is a  registered  investment  company
offering shares of ten no-load mutual funds,  one of which is described in this
Statement of Additional  Information (SAI): the S&P 500 Index Fund. The Fund is
classified as diversified.

     The Fund's  investment  objective  seeks to match,  as closely as possible
(before the deduction of expenses), the performance of the S&P 500 Index, which
emphasizes stocks of large U.S. companies. As described in the Prospectus,  the
Company seeks to achieve the investment  objective of the Fund by investing all
the investable assets of the Fund in an open-end management  investment company
having the same investment objective as the Fund. The investment company is the
Equity 500 Index  Portfolio  (the  Portfolio)  advised by Bankers Trust Company
(Bankers Trust).

     Since the investment  characteristics of the Fund will correspond directly
to those of the  Portfolio  in which  the Fund  invests  all of its  investable
assets, the following  includes a discussion of the various  investments of and
techniques employed by the Portfolio.

     You may obtain a free copy of the  Prospectus  dated May 1, 1999,  for the
Fund by writing to USAA  Mutual  Fund,  Inc.,  9800  Fredericksburg  Road,  San
Antonio,  TX 78288,  or by calling  toll free  1-800-531-8181.  The  Prospectus
provides the basic  information  you should know before  investing in the Fund.
This SAI is not a Prospectus  and contains  information in addition to and more
detailed  than that set  forth in the  Fund's  Prospectus.  It is  intended  to
provide you with additional information regarding the activities and operations
of the Company and the Fund and should be read in  conjunction  with the Fund's
Prospectus.

     The  financial  statements  for the USAA S&P 500 Index Fund and the Equity
500 Index Portfolio,  and the Independent  Accountants' Reports thereon for the
fiscal year ended  December 31, 1998, are included in the  accompanying  Annual
Report to Shareholders of that date and are incorporated herein by reference.

                               TABLE OF CONTENTS

         Page
           2   Valuation of Securities
           2   Conditions of Purchase and Redemption
           2   Additional Information Regarding Redemption of Shares
           3   Investment Plans
           4   Investment Policies
           9   Investment Restrictions
          12   Portfolio Transactions and Brokerage Commissions
          13   Description of Shares
          14   Tax Considerations
          15   Directors and Officers of the Company
          18   Trustees and Officers of the Portfolio
          19   Investment Adviser
          21   Administrator
          21   General Information
          22   Calculation of Performance Data
          22   Appendix A - Comparison of Fund Performance
          25   Appendix B - Dollar-Cost Averaging

<PAGE>
                            VALUATION OF SECURITIES

Shares of the Fund are offered on a continuing, best-efforts basis through USAA
Investment  Management  Company (IMCO or the Manager).  The offering  price for
shares of the Fund is equal to the current net asset value (NAV) per share. The
NAV per  share of the Fund is  calculated  by adding  the  value of the  Fund's
assets (i.e.,  the value of its investments in the Portfolio and other assets),
deducting liabilities, and dividing by the number of shares outstanding.

     The Fund's NAV per share is calculated  each day,  Monday through  Friday,
except days on which the New York Stock Exchange (NYSE) is closed.  The NYSE is
currently  scheduled to be closed on New Year's Day,  Martin  Luther King,  Jr.
Day, Presidents' Day, Good Friday,  Memorial Day,  Independence Day, Labor Day,
Thanksgiving,  and Christmas,  and on the preceding Friday or subsequent Monday
when one of these holidays falls on a Saturday or Sunday, respectively.

     The Portfolio values its equity and debt securities (other than short-term
debt obligations maturing in 60 days or less),  including listed securities and
securities for which price  quotations  are  available,  on the basis of market
valuations furnished by a pricing service. Short-term debt obligations maturing
in 60 days or less are valued at  amortized  cost,  which  approximates  market
value.  Other assets are valued at fair value using methods  determined in good
faith by the Portfolio's Board of Trustees.

     Each investor in the  Portfolio,  including the Fund, may add to or reduce
its  investment in the Portfolio on each day that the NYSE is open for business
and New York charter banks are not closed owing to customary or local holidays.
As of the close of the NYSE,  currently  4:00 p.m.  (Eastern time or earlier if
the NYSE  closes  earlier)  on each  such  day,  the  value of each  investor's
interest in the Portfolio will be determined by multiplying the net asset value
of the Portfolio by the percentage  representing  that investor's  share of the
aggregate  beneficial  interests in the Portfolio.  Any additions or reductions
that are to be  effected  on that day will  then be  effected.  The  investor's
percentage of the aggregate  beneficial interests in the Portfolio will then be
recomputed as the  percentage  equal to the fraction (1) the numerator of which
is the value of such investor's  investment in the Portfolio as of the close of
the NYSE on such day plus or  minus,  as the  case may be,  the  amount  of net
additions  to or  reductions  in the  investor's  investment  in the  Portfolio
effected  on such day and (2) the  denominator  of which is the  aggregate  net
asset value of the  Portfolio  as of 4:00 p.m. or the close of the NYSE on such
day plus or  minus,  as the case may be,  the  amount  of net  additions  to or
reductions  in the aggregate  investments  in the Portfolio by all investors in
the Portfolio.  The percentage so determined  will then be applied to determine
the value of the  investor's  interest in the  Portfolio as of 4:00 p.m. or the
close of the NYSE on the following day the NYSE is open for trading.

                     CONDITIONS OF PURCHASE AND REDEMPTION

NONPAYMENT

If any order to purchase shares is canceled due to nonpayment or if the Company
does not receive good funds either by check or electronic funds transfer,  USAA
Shareholder  Account Services (Transfer Agent) will treat the cancellation as a
redemption of shares  purchased,  and you will be responsible for any resulting
loss  incurred  by the  Fund  or the  Manager.  If you are a  shareholder,  the
Transfer Agent can redeem shares from any of your  account(s) as  reimbursement
for all losses.  In addition,  you may be prohibited or restricted  from making
future  purchases in any of the USAA Family of Funds.  A $15 fee is charged for
all returned items, including checks and electronic funds transfers.

TRANSFER OF SHARES

You may transfer Fund shares to another person by sending written  instructions
to the Transfer  Agent.  The account must be clearly  identified,  and you must
include  the  number  of  shares  to be  transferred,  the  signatures  of  all
registered owners, and all stock certificates, if any, which are the subject of
transfer.  You also need to send written  instructions signed by all registered
owners and supporting documents to change an account registration due to events
such as divorce,  marriage, or death. If a new account needs to be established,
you may complete and return an application to the Transfer Agent.

             ADDITIONAL INFORMATION REGARDING REDEMPTION OF SHARES

The value of your investment at the time of redemption may be more or less than
the cost at  purchase,  depending  on the value of the  securities  held in the
Portfolio.  Requests for redemption that are subject to any special  conditions
or which  specify an  effective  date other than as provided  herein  cannot be
accepted.  A gain or loss  for tax  purposes  may be  realized  on the  sale of
shares, depending upon the price when redeemed.

                                       2
<PAGE>
     The  Portfolio  reserves  the right,  if  conditions  exist that make cash
payments  undesirable,  to honor any request for redemption or repurchase order
by making payment in whole or in part in readily  marketable  securities chosen
by the  Portfolio  and  valued  as  they  are for  purposes  of  computing  the
Portfolio's  NAV (a  redemption  in kind).  If  payment  is made to the Fund in
securities,  the  Fund may  incur  transaction  expenses  in  converting  these
securities  into cash.  The Portfolio has elected,  however,  to be governed by
Rule 18f-1 under the Investment Company Act of 1940, as amended (1940 Act) as a
result of which the Portfolio is obligated to redeem beneficial  interests with
respect to any one investor during any 90-day period,  solely in cash up to the
lesser of $250,000 or 1% of the NAV of the  Portfolio  at the  beginning of the
period.   For  purposes  of  determining   compliance  with  Rule  18f-1,  each
shareholder of the Fund  redeeming  shares of the Fund on a particular day will
be treated as a direct holder in the interest in the Portfolio  being  redeemed
that day.

     In the event the Company  withdraws or redeems all of the Fund's  interest
in the Portfolio, the Portfolio will effect such redemption in kind and in such
a manner that the securities  delivered to the Fund will mirror,  as closely as
practicable,  the  composition  of the  Portfolio  immediately  prior  to  such
redemption.

     The Board of  Directors  may cause the  redemption  of an  account  with a
balance  of less  than 10  shares  of the Fund  provided  (1) the  value of the
account has been  reduced,  for reasons  other than  market  action,  below the
minimum initial investment in such Fund at the time of the establishment of the
account,  (2) the account has remained  below the minimum level for six months,
and (3) 60 days' prior written notice of the proposed  redemption has been sent
to you.  Shares will be redeemed at the NAV on the date fixed for redemption by
the Board of Directors.  Prompt payment will be made by mail to your last known
address.

     The  Company  reserves  the right to suspend  the right of  redemption  or
postpone  the date of  payment  (1) for any  periods  during  which the NYSE is
closed,  (2) when  trading in the  markets  the  Company  normally  utilizes is
restricted, or an emergency exists as determined by the Securities and Exchange
Commission (SEC) so that disposal of the Company's investments or determination
of its NAV is not reasonably practicable,  or (3) for such other periods as the
SEC by order may permit for protection of the Company's shareholders.

     For the mutual  protection  of the investor and the Fund,  the Company may
require a signature  guarantee.  If  required,  EACH  signature  on the account
registration must be guaranteed.  Signature guarantees are acceptable from FDIC
member  banks,  brokers,  dealers,   municipal  securities  dealers,  municipal
securities  brokers,   government  securities  dealers,  government  securities
brokers,  credit unions,  national securities exchanges,  registered securities
associations,   clearing  agencies,  and  savings  associations.   A  signature
guarantee for active duty military  personnel  stationed abroad may be provided
by an officer of the United States Embassy or Consulate, a staff officer of the
Judge Advocate General, or an individual's commanding officer.

                                INVESTMENT PLANS

The Company makes available the following  investment  plans to shareholders of
the Fund.  At the time you sign up for any of the  following  investment  plans
that utilize the electronic funds transfer service,  you will choose the day of
the month (the  effective  date) on which you would like to regularly  purchase
shares.  When this day falls on a weekend or holiday,  the electronic  transfer
will take place on the last  business day before the  effective  date.  You may
terminate your participation in a plan at any time. Please call the Manager for
details and necessary forms or applications.

AUTOMATIC PURCHASE OF SHARES

INVESTRONIC(R) - The regular purchase of additional  shares through  electronic
funds transfer from a checking or savings account.  You may invest as little as
$50 per month.

DIRECT PURCHASE  SERVICE - The periodic  purchase of shares through  electronic
funds  transfer  from  a   non-governmental   employer,   an   income-producing
investment, or an account with a participating financial institution.

DIRECT DEPOSIT PROGRAM - The monthly  transfer of certain  federal  benefits to
directly  purchase  shares of a USAA mutual  fund.  Eligible  federal  benefits
include:  Social Security,  Supplemental Security Income, Veterans Compensation
and Pension,  Civil Service  Retirement  Annuity,  and Civil  Service  Survivor
Annuity.

GOVERNMENT  ALLOTMENT - The  transfer of  military  pay by the U.S.  Government
Finance Center for the purchase of USAA mutual fund shares.

                                       3
<PAGE>
AUTOMATIC  PURCHASE  PLAN - The  periodic  transfer  of funds from a USAA money
market fund to purchase  shares in another  non-money  market USAA mutual fund.
There is a minimum investment  required for this program of $5,000 in the money
market fund, with a monthly transaction minimum of $50.

BUY/SELL  SERVICE - The  intermittent  purchase or redemption of shares through
electronic  funds  transfer to or from a checking or savings  account.  You may
initiate a "buy" or "sell" whenever you choose.

DIRECTED  DIVIDENDS  - If you own  shares  in more than one of the Funds in the
USAA  Family of Funds,  you may  direct  that  dividends  and/or  capital  gain
distributions  earned in one fund be used to purchase shares  automatically  in
another fund.

     Participation in these automatic  purchase plans will permit you to engage
in dollar-cost averaging. For additional information concerning the benefits of
dollar-cost averaging, see APPENDIX B.

SYSTEMATIC WITHDRAWAL PLAN

If you own shares having a NAV of $5,000 or more in a single investment account
(accounts in different  Funds cannot be aggregated for this  purpose),  you may
request  that enough  shares to produce a fixed  amount of money be  liquidated
from the account monthly or quarterly. The amount of each withdrawal must be at
least $50. Using the electronic funds transfer service,  you may choose to have
withdrawals   electronically   deposited  at  your  bank  or  other   financial
institution. You may also elect to have checks mailed to a designated address.

     This plan may be initiated by depositing shares worth at least $5,000 with
the Transfer Agent and by completing a Systematic  Withdrawal Plan application,
which may be requested from the Manager. You may terminate participation in the
plan at any time.  You are not charged  for  withdrawals  under the  Systematic
Withdrawal  Plan. The Company will not bear any expenses in  administering  the
plan  beyond the  regular  transfer  agent and  custodian  costs of issuing and
redeeming   shares.   The  Manager  will  bear  any   additional   expenses  of
administering the plan.

     Withdrawals  will be made by redeeming full and  fractional  shares on the
date you select at the time the plan is established.  Withdrawal  payments made
under this plan may exceed  dividends  and  distributions  and, to this extent,
will  involve the use of  principal  and could  reduce the dollar value of your
investment  and  eventually  exhaust the  account.  Reinvesting  dividends  and
distributions  helps  replenish  the  account.  Because  share  values  and net
investment income can fluctuate, you should not expect withdrawals to be offset
by rising income or share value gains.

     Each  redemption  of shares  may  result in a gain or loss,  which must be
reported  on your  income tax  return.  Therefore,  you should keep an accurate
record of any gain or loss on each withdrawal.

TAX-DEFERRED RETIREMENT PLANS

Federal  taxes on current  income may be  deferred  if you  qualify for certain
types  of  retirement  programs.  For  your  convenience,  the  Manager  offers
403(b)(7)  accounts and various forms of IRAs. You may make  investments in one
or any  combination  of the Funds  described in the  Prospectus of each Fund of
USAA Mutual Fund, Inc. and USAA  Investment  Trust (not available in the Growth
and Tax Strategy Fund).

     Retirement plan applications for the IRA and 403(b)(7)  programs should be
sent directly to USAA Shareholder Account Services,  9800 Fredericksburg  Road,
San Antonio,  TX 78288. USAA Federal Savings Bank serves as Custodian for these
tax-deferred retirement plans under the programs made available by the Manager.
Applications  for  these  retirement  plans  received  by the  Manager  will be
forwarded to the Custodian for acceptance.

     An administrative  fee of $20 is deducted from the money sent to you after
closing an account.  Exceptions to the fee are:  partial  distributions,  total
transfer within USAA, and distributions due to disability or death. This charge
is  subject  to change as  provided  in the  various  agreements.  There may be
additional charges, as mutually agreed upon between you and the Custodian,  for
further services requested of the Custodian.

     Each employer or individual establishing a tax-deferred retirement plan is
advised to consult with a tax adviser  before  establishing  the plan.  You may
obtain detailed information about the plans from the Manager.

                              INVESTMENT POLICIES

The  investment  objective of the Fund is  described in the Fund's  Prospectus.
There can, of course, be no assurance that the Fund will achieve its investment
objective.  The Fund's investment objective is not a fundamental policy and may
be  changed   upon  notice  to,  but  without  the   approval  of,  the  Fund's
shareholders.  If there is a change in the  Fund's  investment  objective,  the
Fund's  shareholders  should  consider  whether the Fund remains an appropriate
investment in light of their then-current needs. The

                                       4
<PAGE>
investment  objective  of the  Portfolio  is  also  not a  fundamental  policy.
Shareholders  of the Funds will  receive 30 days'  prior  written  notice  with
respect  to  any  change  in  the  investment  objective  of  the  Fund  or the
corresponding Portfolio.

     The Fund seeks to achieve its investment objective by investing all of its
investable  assets in the  Portfolio.  The  Company  may  withdraw  the  Fund's
investment  from the  Portfolio  at any time if the Board of  Directors  of the
Company determines that it is in the best interest of the Fund to do so.

     Since the investment  characteristics of the Fund will correspond directly
to those  of the  Portfolio,  the  following  is a  discussion  of the  various
investments of and techniques employed by the Portfolio.

     EQUITY SECURITIES. The Portfolio may invest in equity securities listed on
any domestic or foreign securities  exchange or traded in the  over-the-counter
market as well as certain  restricted or unlisted  securities.  As used herein,
"equity  securities"  are defined as common stock,  preferred  stock,  trust or
limited partnership interests,  rights and warrants to subscribe to or purchase
such  securities,  sponsored or unsponsored  ADRs,  EDRs, GDRs, and convertible
securities,  consisting  of debt  securities  or  preferred  stock  that may be
converted  into common stock or that carry the right to purchase  common stock.
Common stocks, the most familiar type, represent an equity (ownership) interest
in a  corporation.  They may or may not pay  dividends or carry voting  rights.
Common  stock  occupies  the  most  junior  position  in  a  company's  capital
structure.  Although equity  securities  have a history of long-term  growth in
value,  their  prices  fluctuate  based on  changes  in a  company's  financial
condition and on overall market and economic conditions.  Smaller companies are
especially sensitive to these factors.

     SHORT-TERM INSTRUMENTS.  When the Portfolio experiences large cash inflows
through  the sale of  securities  and  desirable  equity  securities,  that are
consistent with the Portfolio's investment objective,  which are unavailable in
sufficient   quantities  or  at  attractive  prices,  the  Portfolio  may  hold
short-term  investments  (or shares of money market mutual funds) for a limited
time pending  availability of such equity  securities.  Short-term  instruments
consist of foreign  and  domestic:  (i)  short-term  obligations  of  sovereign
governments,  their  agencies,  instrumentalities,   authorities  or  political
subdivisions;  (ii)  other  short-term  debt  securities  rated AA or higher by
("S&P") or Aa or higher by Moody's Investors Service,  Inc.  ("Moody's") or, if
unrated,  of  comparable  quality  in  the  opinion  of  Bankers  Trust;  (iii)
commercial paper; (iv) bank obligations,  including negotiable  certificates of
deposit, time deposits and banker's acceptances; and (v) repurchase agreements.
At the time the Portfolio  invests in commercial  paper,  bank  obligations  or
repurchase agreements,  the issuer or the issuer's parent must have outstanding
debt  rated AA or  higher  by S&P or Aa or higher  by  Moody's  or  outstanding
commercial  paper or bank  obligations  rated A-1 by S&P or Prime-1 by Moody's;
or, if no such ratings are  available,  the  instrument  must be of  comparable
quality in the opinion of Bankers Trust.

     CERTIFICATES OF DEPOSIT AND BANKERS' ACCEPTANCES.  Certificates of deposit
are receipts issued by a depository  institution in exchange for the deposit of
funds.  The issuer  agrees to pay the amount  deposited  plus  interest  to the
bearer of the receipt on the date specified on the certificate. The certificate
usually  can be traded in the  secondary  market  prior to  maturity.  Bankers'
acceptances  typically arise from short-term  credit  arrangements  designed to
enable  businesses  to  obtain  funds  to  finance   commercial   transactions.
Generally,  an  acceptance is a time draft drawn on a bank by an exporter or an
importer to obtain a stated  amount of funds to pay for  specific  merchandise.
The  draft  is then  "accepted"  by a bank  that,  in  effect,  unconditionally
guarantees to pay the face value of the  instrument on its maturity  date.  The
acceptance may then be held by the accepting bank as an earning asset or it may
be sold in the  secondary  market at the going rate of discount  for a specific
maturity.  Although maturities for acceptances can be as long as 270 days, most
acceptances have maturities of six months or less.

     COMMERCIAL PAPER.  Commercial paper consists of short-term (usually from 1
to 270 days)  unsecured  promissory  notes issued by  corporations  in order to
finance their current  operations.  A variable amount master demand note (which
is a type of  commercial  paper)  represents  a  direct  borrowing  arrangement
involving  periodically  fluctuating rates of interest under a letter agreement
between a commercial paper issuer and an institutional lender pursuant to which
the lender may determine to invest varying amounts.

     ILLIQUID  SECURITIES.  Historically,  illiquid  securities  have  included
securities  subject to contractual or legal restrictions on resale because they
have not been registered under the Securities Act of 1933, as amended (the 1933
Act),  securities  that are otherwise not readily  marketable,  and  repurchase
agreements  having a maturity of longer than seven days.  Securities  that have
not been registered under the 1933 Act are referred to as private placements or
restricted  securities  and are  purchased  directly  from the issuer or in the
secondary  market.  Mutual funds do not typically hold a significant  amount of
these  restricted  or other  illiquid  securities  because of the potential for
delays on resale and  uncertainty in valuation.  Limitations on resale may have
an adverse  effect on the  marketability  of portfolio  securities and a mutual
fund might be 

                                       5
<PAGE>
unable to dispose of restricted  or other  illiquid  securities  promptly or at
reasonable   prices  and  might  thereby   experience   difficulty   satisfying
redemptions  within seven days. A mutual fund might also have to register  such
restricted  securities  in order to dispose  of them  resulting  in  additional
expense  and  delay.  Adverse  market  conditions  could  impede  such a public
offering of securities.

     A large institutional market has developed for certain securities that are
not registered under the 1933 Act, including repurchase agreements,  commercial
paper, foreign securities, municipal securities, and corporate bonds and notes.
Institutional  investors depend on an efficient  institutional  market in which
the  unregistered  security can be readily resold or on an issuer's  ability to
honor a demand  for  repayment.  The fact that there are  contractual  or legal
restrictions on resale of such  investments to the general public or to certain
institutions may not be indicative of their liquidity.

     The Securities and Exchange  Commission (the "SEC") has adopted Rule 144A,
which allows a broader  institutional  trading market for securities  otherwise
subject  to  restriction  on their  resale  to the  general  public.  Rule 144A
establishes a "safe harbor" from the registration  requirements of the 1933 Act
of resales of certain  securities to qualified  institutional  buyers.  Bankers
Trust  anticipates  that the market for certain  restricted  securities such as
institutional  commercial  paper  will  expand  further  as a  result  of  this
regulation and the development of automated systems for the trading,  clearance
and settlement of unregistered securities of domestic and foreign issuers, such
as the PORTAL  System  sponsored  by the  National  Association  of  Securities
Dealers, Inc.

     Rule 144A  Securities  are  securities  in the United  States that are not
registered  for sale under federal  securities  laws but which can be resold to
institutions  under SEC Rule  144A.  Provided  that a dealer  or  institutional
trading  market in such  securities  exists,  these  restricted  securities are
treated  as  exempt  from  the 15%  limit on  illiquid  securities.  Under  the
supervision  of  the  Board  of  Trustees  of  the  Portfolios,  Bankers  Trust
determines the liquidity of restricted  securities  and,  through  reports from
Bankers  Trust,   the  Board  will  monitor  trading   activity  in  restricted
securities.  If institutional trading in restricted securities were to decline,
the liquidity of the Portfolio could be adversely affected.

     In reaching liquidity decisions,  Bankers Trust will consider, among other
things, the following  factors:  (1) the frequency of trades and quotes for the
security;  (2) the number of dealers and other potential  purchasers wishing to
purchase or sell the security;  (3) dealer undertakings to make a market in the
security; and (4) the  nature of the  security  and of the  marketplace  trades
(e.g.,  the time needed to dispose of the  security,  the method of  soliciting
offers and the mechanics of the transfer).

     WHEN-ISSUED AND DELAYED  DELIVERY  SECURITIES.  The Portfolio may purchase
securities on a when-issued or delayed delivery basis.  Delivery of and payment
for  these  securities  can take  place a month or more  after  the date of the
purchase commitment.  The purchase price and the interest rate payable, if any,
on the securities are fixed on the purchase  commitment date or at the time the
settlement  date is fixed.  The value of such  securities  is subject to market
fluctuation  and no interest  accrues to the Portfolio until  settlement  takes
place. At the time the Portfolio makes the commitment to purchase securities on
a  when-issued  or delayed  delivery  basis,  it will  record the  transaction,
reflect  the value each day of such  securities  in  determining  its net asset
value and, if  applicable,  calculate  the maturity for the purposes of average
maturity from that date. At the time of settlement, a when-issued  security may
be valued at less than the purchase price. To facilitate such acquisitions, the
Portfolio  identifies,   as  part  of  a  segregated  account  cash  or  liquid
securities, in an amount at least equal to such commitments.  On delivery dates
for such transactions,  the Portfolio will meet its obligations from maturities
or sales of the  securities  held in the  segregated  account  and/or from cash
flow. If the Portfolio chooses to dispose of the right to acquire a when-issued
security prior to its  acquisition,  it could,  as with the  disposition of any
other portfolio obligation,  incur a gain or loss due to market fluctuation. It
is  the  current  policy  of  the  Portfolio  not  to  enter  into  when-issued
commitments  exceeding  in  the  aggregate  15%  of  the  market  value  of the
Portfolio's total assets,  less liabilities other than the obligations  created
by when-issued commitments.

     LENDING OF PORTFOLIO  SECURITIES.  The Portfolio has the authority to lend
up to 30% of the total value of its portfolio  securities to brokers,  dealers,
and other financial organizations. By lending its securities, the Portfolio may
increase its income by continuing  to receive  payments in respect of dividends
and interest on the loaned  securities as well as by either  investing the cash
collateral  in short-term  securities  or obtaining  yield in the form of a fee
paid by the borrower  when  irrevocable  letters of credit and U.S.  Government
obligations are used as collateral.  The Portfolio will adhere to the following
conditions  whenever its securities are loaned:  (1) the Portfolio must receive
at least 100% collateral from the borrower; (2) the borrower must increase this
collateral  whenever  the  market  value of the  securities  including  accrued
interest  rises above the level of the  collateral;  (3) the Portfolio  must be
able to  terminate  the loan at any time;  (4) the  Portfolio  must  substitute
payments in respect of all dividends, interest, or other distributions on

                                       6
<PAGE>
loaned  securities;  and (5) voting rights on the loaned securities may pass to
the borrower;  provided,  however, that if a material event adversely affecting
the investment  occurs,  the  Portfolio's  Board of Trustees must terminate the
loan and  regain  the  right to vote the  securities.  Cash  collateral  may be
invested in a money  market fund managed by Bankers  Trust (or its  affiliates)
and Bankers Trust may serve as the  Portfolio's  lending agent and may share in
revenue received from securities lending  transactions as compensation for this
service.

      REPURCHASE  AGREEMENTS.  In a repurchase agreement,  the Portfolio buys a
security  at one  price and  simultaneously  agrees to sell it back at a higher
price at a future date. In the event of the  bankruptcy of the other party to a
repurchase  agreement,  the  Portfolio  could  experience  delays in recovering
either its cash or selling securities subject to the repurchase  agreement.  To
the extent that, in the meantime,  the value of the securities  repurchased had
decreased or the value of the  securities had  increased,  the Portfolio  could
experience a loss. In all cases,  Bankers Trust must find the  creditworthiness
of the other party to the transaction satisfactory.

INDEX FUTURES CONTRACTS AND OPTIONS ON INDEX FUTURES CONTRACTS

     FUTURES  CONTRACTS.  Futures contracts are contracts to purchase or sell a
fixed amount of an underlying instrument,  commodity,  or index at a fixed time
and place in the future. U.S. futures contracts have been designed by exchanges
which have been designated "contracts markets" by the Commodity Futures Trading
Commission  ("CFTC"),  and  must  be  executed  through  a  futures  commission
merchant, or brokerage firm, which is a member of the relevant contract market.
Futures  contracts  trade on a number  of  exchanges  and clear  through  their
clearing corporations.  The Portfolio may enter into contracts for the purchase
or sale for future delivery of the Index.

     At the same time a futures  contract  on the Index is  entered  into,  the
Portfolio  must  allocate  cash or  securities  as a deposit  payment  (initial
margin).  Initial margin deposits are set by exchanges and may range between 1%
and 10% of a contract's face value.  Daily thereafter,  the futures contract is
valued and the payment of  "variation  margin" may be required,  since each day
the  Portfolio  would  provide or receive  cash that  reflects  any  decline or
increase in the contract's value.

     Although futures contracts (other than those that settle in cash) by their
terms call for the actual delivery or acquisition of the instrument  underlying
the contract,  in most cases the contractual  obligation is fulfilled by offset
before the date of the contract  without having to make or take delivery of the
instrument underlying the contract.  The offsetting of a contractual obligation
is accomplished by entering into an opposite  position in the identical futures
contract on a  commodities  exchange on which the futures  contract was entered
into (or a linked  exchange).  Such a transaction,  which is effected through a
member of an exchange,  cancels the  obligation to make or take delivery of the
instrument  underlying  the  contract.  Since all  transactions  in the futures
market are made, offset, or fulfilled  through a clearinghouse  associated with
the  exchange on which the  contracts  are  traded,  the  Portfolio  will incur
brokerage fees when it purchases or sells futures contracts.

     The ordinary spreads between prices in the cash and futures market, due to
differences in the nature of those markets, are subject to distortions.  First,
all  participants  in the  futures  market are  subject to initial  deposit and
variation margin requirements.  Rather than meeting additional variation margin
requirements,   investors  may  close  futures  contracts  through   offsetting
transactions which could distort the normal  relationship  between the cash and
futures  markets.  Second,  the liquidity of the futures market depends on most
participants'  entering  into  offsetting  transactions  rather  than making or
taking delivery.  To the extent that many  participants  decide to make or take
delivery,  liquidity  in the futures  market could be reduced,  thus  producing
distortion.  Third,  from the point of view of speculators,  the margin deposit
requirements in the futures market are less onerous than margin requirements in
the securities market. Therefore, increased participation by speculators in the
futures market may cause temporary price distortions. Due to the possibility of
distortion,  a correct forecast of securities price trends by Bankers Trust may
still not result in a successful transaction.

     In addition,  futures  contracts  entail  risks.  Although  Bankers  Trust
believes  that  use  of  such  contracts  will  benefit  the  Portfolio,  these
investments  in futures may cause the Portfolio to realize gains and losses for
tax  purposes  that would not  otherwise be realized if the  Portfolio  were to
invest  directly in the underlying  securities.  As a result,  this  investment
technique may  accelerate  the timing of receipt of taxable  distributions.

     OPTIONS ON INDEX FUTURES  CONTRACTS.  The Portfolio may purchase and write
options on futures  contracts with respect to the Index. The purchase of a call
option on an index futures contract is similar in some respects to the purchase
of a call option on such an index. For example, when the Portfolio is not fully
invested it may  purchase a call option on an index  futures  contract to hedge
against a market advance.
                                       7
<PAGE>
     The writing of a call  option on a futures  contract  with  respect to the
Index may constitute a partial hedge against declining prices of the underlying
securities that  are deliverable upon exercise of the futures contract.  If the
futures  price at  expiration  of the option is below the exercise  price,  the
Portfolio  will retain the full amount of the option  premium that   provides a
partial hedge  against any decline which may have  occurred in the  Portfolio's
holdings.  The  writing  of a put  option  on an  index  futures  contract  may
constitute  a  partial  hedge  against  increasing  prices  of  the  underlying
securities which are deliverable upon exercise of the futures contract.  If the
futures price at  expiration  of the option is higher than the exercise  price,
the Portfolio  will retain the full amount of the option premium which provides
a partial  hedge  against  any  increase in the price of  securities  which the
Portfolio  intends  to  purchase.  If a put or call  option the  Portfolio  has
written is exercised,  the Portfolio will incur a loss which will be reduced by
the amount of the premium it receives.  Depending on the degree of  correlation
between  changes in the value of its  portfolio  securities  and changes in the
value of its futures positions, the Portfolio's losses from existing options on
futures may to some extent be reduced or  increased  by changes in the value of
portfolio securities.

     The  purchase of a put option on a futures  contract  with  respect to the
Index is similar in some respects to the purchase of protective put options the
Index. For example, the Portfolio may purchase a put option on an index futures
contract to hedge against the risk lowering securities values.

     The amount of risk the Portfolio  assumes when it purchases an option on a
futures  contract  with respect to the Index is the premium paid for the option
plus related  transaction costs. In addition to the correlation risks discussed
above, the purchase of such an option also entails the risk that changes in the
value of the  underlying  futures  contract will not be fully  reflected in the
value of the option purchased.

     The Portfolio's  Board of Trustees has adopted the requirement  that index
futures  contracts and options on index futures contracts be used only for cash
management purposes. The Portfolio will not enter into any futures contracts or
options on futures  contracts if  immediately  thereafter  the amount of margin
deposits on all the futures  contracts of the  Portfolio  and premiums  paid on
outstanding options on futures contracts owned by the Portfolio would exceed 5%
of the  Portfolio's  net asset  value,  after  taking into  account  unrealized
profits and unrealized losses on any such contracts.

     OPTIONS ON SECURITIES INDEXES. The Portfolio may write (sell) covered call
and put  options to a limited  extent on the Index  ("covered  options")  in an
attempt to increase income. Such options give the holder the right to receive a
cash settlement during the term of the option based upon the difference between
the  exercise  price and the value of the index.  The  Portfolio  may forgo the
benefits of  appreciation on the Index or may pay more than the market price of
the Index pursuant to call and put options written by the Portfolio.

     By writing a covered call option, the Portfolio  forgoes,  in exchange for
the premium less the  commission  ("net  premium"),  the  opportunity to profit
during the option  period  from an  increase  in the market  value of the Index
above the exercise  price. By writing a covered put option,  the Portfolio,  in
exchange  for the net  premium  received,  accepts the risk of a decline in the
market value of the Index below the exercise price.

     The Portfolio may terminate its  obligation as the writer of a call or put
option by purchasing an option with the same exercise price and expiration date
as the option previously written.

     When the  Portfolio  writes an option,  an amount equal to the net premium
received  by  the  Portfolio  is  included  in  the  liability  section  of the
Portfolio's  Statement  of Assets and  Liabilities  as a deferred  credit.  The
amount of the deferred credit will be subsequently  marked to market to reflect
the current market value of the option  written.  The current market value of a
traded  option is the last sale price or, in the  absence  of a sale,  the mean
between the closing bid and asked price. If an option expires on its stipulated
expiration date or if the Portfolio enters into a closing purchase transaction,
the  Portfolio  will realize a gain (or loss if the cost of a closing  purchase
transaction  exceeds the premium  received  when the option was sold),  and the
deferred credit related to such option will be eliminated.  If a call option is
exercised,  the  Portfolio  will  realize  a gain or loss  from the sale of the
underlying  security  and the  proceeds  of the sale will be  increased  by the
premium originally received.  The writing of covered call options may be deemed
to  involve  the  pledge of the  securities  against  which the option is being
written.  Securities  against which call options are written will be segregated
on the books of the custodian for the Portfolio.

The  Portfolio  may purchase  call and put options on the Index.  The Portfolio
would  normally  purchase a call option in  anticipation  of an increase in the
market  value of the Index.  The  purchase of a call option  would  entitle the
Portfolio,  in  exchange  for the premium  paid,  to  purchase  the  underlying
securities at a specified  price during the option period.  The Portfolio would
ordinarily  have a gain if the  value of the  securities  increased  above  the
exercise price  sufficiently  to cover the premium and would have a loss if the
value of the  securities  remained at or below the  exercise  price  during the
option period.

                                       8
<PAGE>
     The Portfolio  would normally  purchase put options in  anticipation  of a
decline in the market value of the Index  (protective  puts). The purchase of a
put option would  entitle the  Portfolio,  in exchange for the premium paid, to
sell, the underlying  securities at a specified price during the option period.
The purchase of protective puts is designed merely to offset or hedge against a
decline  in the market  value of the  Index.  The  Portfolio  would  ordinarily
recognize a gain if the value of the Index  decreased  below the exercise price
sufficiently  to cover the premium  and would  recognize a loss if the value of
the Index  remained  at or above the  exercise  price.  Gains and losses on the
purchase of protective  put options  would tend to be offset by  countervailing
changes in the value of the Index.

     The Portfolio has adopted certain other nonfundamental policies concerning
index option transactions which are discussed below. The Portfolio's activities
in index options may also be restricted by the  requirements  of the Code,  for
qualification as a regulated investment company.

     The hours of trading for options on the Index may not conform to the hours
during  which the  underlying  securities  are  traded.  To the extent that the
option  markets  close  before  the  markets  for  the  underlying  securities,
significant  price  and  rate  movements  can  take  place  in  the  underlying
securities  markets  that  cannot be  reflected  in the option  markets.  It is
impossible to predict the volume of trading that may exist in such options, and
there  can be no  assurance  that  viable  exchange  markets  will  develop  or
continue.

     Because options on securities  indices require settlement in cash, Bankers
Trust  may be forced  to  liquidate  portfolio  securities  to meet  settlement
obligations.

     ASSET COVERAGE.  To assure that the Portfolio's use of futures and related
options, as well as when-issued and delayed-delivery  securities,  are not used
to achieve investment leverage, the Portfolio will cover such transactions,  as
required  under  applicable  interpretations  of the SEC,  either by owning the
underlying  securities  or by  segregating  with the  Portfolio's  Custodian or
futures  commission  merchant liquid securities in an amount at all times equal
to or exceeding the Portfolio's commitment with respect to these instruments or
contracts.

                            INVESTMENT RESTRICTIONS

Certain investment restrictions of the Fund and the Portfolio have been adopted
as  fundamental  policies  of the  Fund or  Portfolio,  as the  case  may be. A
fundamental policy may not be changed without the approval of a majority of the
outstanding  voting  securities of the Fund or  Portfolio,  as the case may be.
Majority of the outstanding  voting  securities under the 1940 Act, and as used
in this SAI and the  Prospectus,  means,  the  lesser of (1) 67% or more of the
outstanding  voting  securities of the Fund or  Portfolio,  as the case may be,
present at a meeting, if the holders of more than 50% of the outstanding voting
securities  of the  Fund or  Portfolio,  as the  case may be,  are  present  or
represented by proxy or (2) more than 50% of the outstanding  voting securities
of the Fund or Portfolio, as the case may be. Whenever the Company is requested
to vote on a  fundamental  policy of the  Portfolio,  the  Company  will hold a
meeting of the Fund's  shareholders and will cast its vote as instructed by the
Fund's  shareholders.  The percentage of the Company's votes  representing Fund
shareholders  not voting will be voted by the  Directors  of the Company in the
same proportion as the Fund shareholders who do, in fact, vote.

As a matter of fundamental  policy, the Fund may not (except that no investment
restriction  of the Fund  shall  prevent  the Fund  from  investing  all of its
investable assets in an open-end investment company with substantially the same
investment objective):

  (1) with respect to 75% of its total assets,  purchase the  securities of any
      issuer (except U.S. Government Securities, as such term is defined in the
      1940 Act) if, as a result,  it would own more than 10% of the outstanding
      voting  securities  of such  issuer or it would  have more than 5% of the
      value of its total assets invested in the securities of such issuer;

  (2) borrow money, except for temporary or emergency purposes in an amount not
      exceeding 33 1/3% of its total  assets  (including  the amount  borrowed)
      less liabilities (other than borrowings);

  (3) concentrate its investments in any one industry although it may invest up
      to 25% of the value of its total  assets in any one  industry;  provided,
      this limitation does not apply to securities  issued or guaranteed by the
      U.S. Government or its corporate instrumentalities;

  (4) issue senior securities, except as permitted under the 1940 Act;

  (5) underwrite securities of other issuers,  except to the extent that it may
      be deemed to act as a statutory  underwriter in the  distribution  of any
      restricted securities or not readily marketable securities;

                                       9
<PAGE>
  (6) lend any  securities or make any loan if, as a result,  more than 33 1/3%
      of its total  assets  would be lent to other  parties,  except  that this
      limitation  does  not  apply  to  purchases  of  debt  securities  or  to
      repurchase agreements;

  (7) purchase  or sell  commodities,  except  that  the  Fund  may  invest  in
      financial futures contracts,  options thereon,  and similar  instruments;
      and

  (8) purchase or sell real estate unless  acquired as a result of ownership of
      securities  or other  instruments,  except  that the Fund may  invest  in
      securities  or other  instruments  backed by real estate or securities of
      companies  that deal in real  estate or are  engaged  in the real  estate
      business.

As a matter of fundamental policy, the Portfolio may not:

  (1) borrow money or mortgage or hypothecate  assets of the Portfolio,  except
      that  in an  amount  not  to  exceed  1/3  of the  current  value  of the
      Portfolio's  assets,  it may  borrow  money as a  temporary  measure  for
      extraordinary  or emergency  purposes  and enter into reverse  repurchase
      agreements  or dollar roll  transactions,  and except that it may pledge,
      mortgage or  hypothecate  not more than 1/3 of such assets to secure such
      borrowings  (it is intended  that money would be borrowed only from banks
      and only either to accommodate  requests for the withdrawal of beneficial
      interests  (redemption of shares) while effecting an orderly  liquidation
      of  portfolio  securities  or to  maintain  liquidity  in the event of an
      unanticipated  failure to complete a portfolio  security  transaction  or
      other similar situations) or reverse repurchase agreements, provided that
      collateral  arrangements  with respect to options and futures,  including
      deposits of initial  deposit and variation  margin,  are not considered a
      pledge of assets for purposes of this  restriction and except that assets
      may be pledged  to secure  letters  of credit  solely for the  purpose of
      participating in a captive  insurance company sponsored by the Investment
      Company Institute;  for additional related  restrictions,  see clause (1)
      under the  caption  "Additional  Restrictions"  below.  (As an  operating
      policy, the Portfolio may not engage in dollar roll transactions);

  (2) underwrite  securities  issued by other  persons  except  insofar  as the
      Portfolio may technically be deemed an underwriter  under the 1933 Act in
      selling a portfolio security;

  (3) make  loans to other  persons  except:  (a)  through  the  lending of the
      Portfolio's  portfolio  securities  and provided  that any such loans not
      exceed 30% of the  Portfolio's  net assets (taken at market  value);  (b)
      through the use of  repurchase  agreements  or the purchase of short-term
      obligations;  or  (c)  by  purchasing  a  portion  of an  issue  of  debt
      securities of types distributed publicly or privately;

  (4) purchase or sell real estate (including limited partnership interests but
      excluding  securities  secured  by real  estate  or  interests  therein),
      interests  in  oil,  gas or  mineral  leases,  commodities  or  commodity
      contracts (except futures and option contracts) in the ordinary course of
      business   (except  that  the  Portfolio  may  hold  and  sell,  for  the
      Portfolio's   portfolio,   real  estate  acquired  as  a  result  of  the
      Portfolio's ownership of securities);

  (5) concentrate  its investments in any particular  industry  (excluding U.S.
      Government  securities),   but  if  it  is  deemed  appropriate  for  the
      achievement of the  Portfolio's  investment  objective,  up to 25% of its
      total assets may be invested in any one industry; and

  (6) issue any  senior  security  (as that term is defined in the 1940 Act) if
      such issuance is specifically prohibited by the 1940 Act or the rules and
      regulations promulgated thereunder, provided that collateral arrangements
      with  respect to  options  and  futures,  including  deposits  of initial
      deposit and variation margin,  are not considered to be the issuance of a
      senior security for purposes of this restriction.

 (7)  with respect to 75% of the Fund's (Portfolio's) total assets, invest more
      than  5% of  its  total  assets  in the  securities  of  any  one  issuer
      (excluding cash and cash-equivalents,  U.S. government securities and the
      securities  of other  investments  companies) or own more than 10% of the
      voting securities of any issuer.

      ADDITIONAL  RESTRICTIONS.  In order to comply with  certain  statutes and
policies,  the Fund and the Portfolio will not as a matter of operating  policy
(except that no operating  policy shall prevent the Fund from  investing all of
its investable assets in an open-end  investment company with substantially the
same investment objective):

  (1) borrow money (including through dollar roll transactions) for any purpose
      in excess  of 10% of the  Fund's  (Portfolio's)  total  assets  (taken at
      cost),  except  that the Fund  (Portfolio)  may borrow for  temporary  or
      emergency purposes up to 1/3 of its total assets;

  (2) pledge,  mortgage, or hypothecate for any purpose in excess of 10% of the
      Fund's (Portfolio's) total assets (taken at market value),  provided that
      collateral  arrangements  with respect to options and futures,  including
      deposits of initial deposit and variation margin,  and reverse repurchase
      agreements  are not  considered  a pledge of assets for  purposes of this
      restriction;

                                      10
<PAGE>
  (3) purchase any security or evidence of interest  therein on margin,  except
      that such  short-term  credit as may be  necessary  for the  clearance of
      purchases  and  sales of  securities  may be  obtained  and  except  that
      deposits  of  initial  deposit  and  variation  margin  may  be  made  in
      connection with the purchase, ownership, holding or sale of futures;

  (4) sell any security which it does not own unless by virtue of its ownership
      of  other  securities  it has at the  time  of  sale a  right  to  obtain
      securities, without payment of further consideration,  equivalent in kind
      and  amount to the  securities  sold and  provided  that if such right is
      conditional the sale is made upon the same conditions;

  (5) invest for the purpose of exercising control or management;

  (6) purchase  securities issued by any investment  company except by purchase
      in the open market where no  commission  or profit to a sponsor or dealer
      results from such purchase other than the customary broker's  commission,
      or except when such purchase, though not made in the open market, is part
      of a plan of merger or consolidation;  provided, however, that securities
      of any investment  company will not be purchased for the Fund (Portfolio)
      if such  purchase at the time thereof  would cause:  (a) more than 10% of
      the Fund's  (Portfolio's)  total assets  (taken at the greater of cost or
      market value) to be invested in the securities of such issuers;  (b) more
      than 5% of the Fund's (Portfolio's) total assets (taken at the greater of
      cost or market value) to be invested in any one  investment  company;  or
      (c) more than 3% of the outstanding  voting securities of any such issuer
      to be held for the Fund (Portfolio); and provided further that, except in
      the case of  merger  or  consolidation,  the Fund  (Portfolio)  shall not
      invest  in  any  other  open-end   investment  company  unless  the  Fund
      (Portfolio),  (i)  waives the  investment  advisory  fee with  respect to
      assets invested in other open-end investment companies and (ii) incurs no
      sales charge in connection  with the investment (as an operating  policy,
      the Portfolio will not invest in another open-end  registered  investment
      company);

  (7) invest more than 15% of the Fund's (Portfolio's) net assets (taken at the
      greater of cost or market value) in  securities  that are illiquid or not
      readily  marketable not including (a) Rule 144A securities that have been
      determined  to be  liquid  by the  Board of  Directors/Trustees;  and (b)
      commercial  paper that is sold under  section 4(2) of the 1933 Act which:
      (i) is not traded  flat or in default as to interest  or  principal;  and
      (ii) is  rated  in one of the two  highest  categories  by at  least  two
      nationally recognized  statistical rating organizations  (NRSROs) and the
      Fund's  (Portfolio's)  Board of  Directors/Trustees  have  determined the
      commercial  paper  to be  liquid;  or  (iii)  is  rated in one of the two
      highest  categories  by one NRSRO and the Fund's  (Portfolio's)  Board of
      Directors/Trustees   have  determined   that  the  commercial   paper  is
      equivalent quality and is liquid;

  (8) make short sales of  securities or maintain a short  position,  unless at
      all times when a short  position is open it owns an equal  amount of such
      securities  or  securities  convertible  into  or  exchangeable,  without
      payment of any further  consideration,  for  securities of the same issue
      and equal in amount to, the  securities  sold short,  and unless not more
      than 10% of the Fund's  (Portfolio's)  net assets (taken at market value)
      is  represented by such  securities,  or securities  convertible  into or
      exchangeable for such  securities,  at any one time (the Fund [Portfolio]
      has no current intention to engage in short selling);

  (9) write  puts  and  calls  on  securities  unless  each  of  the  following
      conditions are met: (a) the security underlying the put or call is within
      the investment  policies of the Fund (Portfolio) and the option is issued
      by the  Options  Clearing  Corporation,  except for put and call  options
      issued  by  non-U.S.  entities  or  listed  on  non-U.S.   securities  or
      commodities  exchanges;  (b)  the  aggregate  value  of  the  obligations
      underlying the puts  determined as of the date the options are sold shall
      not exceed 5% of the Fund's  (Portfolio's) net assets; (c) the securities
      subject to the exercise of the call written by the Fund  (Portfolio) must
      be owned by the  Fund  (Portfolio)  at the time the call is sold and must
      continue  to be  owned by the Fund  (Portfolio)  until  the call has been
      exercised,  has lapsed,  or the Fund  (Portfolio) has purchased a closing
      call, and such purchase has been  confirmed,  thereby  extinguishing  the
      Fund's  (Portfolio's)  obligation to deliver  securities  pursuant to the
      call  it has  sold;  and  (d) at the  time  a put is  written,  the  Fund
      (Portfolio)   establishes   a  segregated   account  with  its  custodian
      consisting  of cash or short-term  U.S.  Government  securities  equal in
      value to the amount the Fund  (Portfolio)  will be  obligated to pay upon
      exercise of the put (this  account  must be  maintained  until the put is
      exercised,  has expired,  or the Fund (Portfolio) has purchased a closing
      put,  which is a put of the same series as the one  previously  written);
      and

 (10) buy and sell puts and calls on securities, stock index futures or options
      on stock index  futures,  or  financial  futures or options on  financial
      futures  unless such  options are written by other  persons  and: (a) the
      options or futures  are  offered  through  the  facilities  of a national
      securities  association  or  are  listed  on  a  national  securities  or
      commodities exchange,  except for put and call options issued by 
 
                                     11
<PAGE>
      non-U.S.  entities  or  listed  on  non-U.S.  securities  or  commodities
      exchanges;  (b) the aggregate premiums paid on all such options which are
      held at any time do not exceed 20% of the Fund's  (Portfolio's) total net
      assets;  and (c) the  aggregate  margin  deposits  required  on all  such
      futures  or  options  thereon  held at any time do not  exceed  5% of the
      Fund's (Portfolio's) total assets.

     There will be no  violation  of any  investment  restrictions  or policies
[except with respect to fundamental  investment restriction (2) of the Fund and
(1) of the Portfolio  above] if that  restriction  is complied with at the time
the  relevant  action is taken,  notwithstanding  a later  change in the market
value of an investment,  in net or total assets, or in the change of securities
rating of the investment, or any other later change.

                PORTFOLIO TRANSACTIONS AND BROKERAGE COMMISSIONS

Bankers Trust is responsible for decisions to buy and sell securities,  futures
contracts and options on such  securities  and futures for the  Portfolio,  the
selection  of  brokers,  dealers  and futures  commission  merchants  to effect
transactions   and  the   negotiation   of  brokerage   commissions,   if  any.
Broker-dealers  may receive  brokerage  commissions on portfolio  transactions,
including options, futures and options on futures transactions and the purchase
and sale of underlying  securities upon the exercise of options.  Orders may be
directed to any broker-dealer or futures commission merchant,  including to the
extent and in the manner  permitted by  applicable  law,  Bankers  Trust or its
subsidiaries or affiliates. Purchases and sales of certain portfolio securities
on behalf of the  Portfolio  are  frequently  placed by Bankers  Trust with the
issuer or a primary or secondary  market-maker  for these  securities  on a net
basis,  without any brokerage  commission being paid by the Portfolio.  Trading
does, however, involve transaction costs.  Transactions with dealers serving as
market-makers reflect the spread between the bid and asked prices.  Transaction
costs  may also  include  fees  paid to third  parties  for  information  as to
potential purchasers or sellers of securities. Purchases of underwritten issues
may be made which will include an underwriting fee paid to the underwriter.

     Bankers  Trust  seeks  to  evaluate  the  overall  reasonableness  of  the
brokerage commissions paid (to the extent applicable) in placing orders for the
purchase  and sale of  securities  for the  Portfolio  taking into account such
factors as price,  commission  (negotiable  in the case of national  securities
exchange  transactions),  if any,  size of order,  difficulty  of execution and
skill  required  of  the  executing   broker-dealer  through  familiarity  with
commissions  charged  on  comparable  transactions,  as  well  as by  comparing
commissions  paid by the  Portfolio  to  reported  commissions  paid by others.
Bankers  Trust  reviews on a routine  basis  commission  rates,  execution  and
settlement services performed, making internal and external comparisons.

     Bankers  Trust  is  authorized,  consistent  with  Section  28(e)  of  the
Securities   Exchange  Act  of  1934,  as  amended,   when  placing   portfolio
transactions for the Portfolio with a broker to pay a brokerage  commission (to
the  extent  applicable)  in excess of that  which  another  broker  might have
charged  for  effecting  the same  transaction  on  account  of the  receipt of
research,  market or statistical  information.  The term  "research,  market or
statistical  information"  includes  advice as to the value of securities;  the
advisability   of  investing  in,   purchasing  or  selling   securities;   the
availability  of  securities  or  purchasers  or  sellers  of  securities;  and
furnishing  analyses and reports concerning  issuers,  industries,  securities,
economic  factors  and  trends,  portfolio  strategy  and  the  performance  of
accounts.

     Consistent with the policy stated above, the Conduct Rules of the National
Association of Securities Dealers, Inc. and such other policies as the Trustees
of the Portfolio may  determine,  Bankers Trust may consider sales of shares of
any  investment  company  that  invests  in the  Portfolio  as a factor  in the
selection of broker-dealers to execute  portfolio  transactions.  Bankers Trust
will make such  allocations if  commissions  are comparable to those charged by
nonaffiliated, qualified broker-dealers for similar services.

     Higher  commissions may be paid to firms that provide research services to
the extent permitted by law. Bankers Trust may use this research information in
managing the Portfolio's assets, as well as the assets of other clients.

     Except for implementing  the policies stated above,  there is no intention
to place portfolio  transactions  with particular  brokers or dealers or groups
thereof. In effecting transactions in over-the-counter  securities,  orders are
placed with the principal  market-makers  for the security being traded unless,
after  exercising  care, it appears that more  favorable  results are available
otherwise.

    Although certain research, market and statistical information from brokers
and  dealers can be useful to the  Portfolio  and to Bankers  Trust,  it is the
opinion  of the  management  of the  Portfolio  that such  information  is only
supplementary  to Bankers  Trust's own research  effort,  since the information
must still be analyzed,  weighed and reviewed by Bankers  Trust's  staff.  Such
information  may be useful to Bankers  

                                      12
<PAGE>
Trust in providing services to clients other than the Portfolio's,  and not all
such  information  is used by Bankers Trust in connection  with the  Portfolio.
Conversely,  such information  provided to Bankers Trust by brokers and dealers
through whom other clients of Bankers Trust effect securities  transactions may
be useful to Bankers Trust in providing services to the Portfolio.

     In certain  instances  there may be  securities  that are suitable for the
Portfolio  as  well  as for  one or more  of  Bankers  Trust's  other  clients.
Investment  decisions for the  Portfolio and for Bankers  Trust's other clients
are made with a view to achieving their respective  investment  objectives.  It
may develop  that a  particular  security is bought or sold for only one client
even  though  it  might be held by,  or  bought  or sold  for,  other  clients.
Likewise,  a particular security may be bought for one or more clients when one
or more clients are selling that same security. Some simultaneous  transactions
are inevitable  when several clients  receive  investment  advice from the same
investment  adviser,  particularly  when the same  security is suitable for the
investment  objectives  of more than one client.  When two or more  clients are
simultaneously  engaged  in the  purchase  or sale of the  same  security,  the
securities are allocated  among clients in a manner believed to be equitable to
each. It is recognized  that in some cases this system could have a detrimental
effect  on the  price or  volume of the  security  as far as the  Portfolio  is
concerned.  However,  it is  believed  that the  ability  of the  Portfolio  to
participate  in volume  transactions  will produce  better  executions  for the
Portfolio.

     For the years ended December 31, 1998,  1997, and 1996, the Portfolio paid
brokerage  commissions  in the  amount of  $534,801,  $341,058,  and  $289,791,
respectively.  For the  year  ended  December  31,  1998,  the  Portfolio  paid
affiliated brokerage commissions in the amount of $333.

                             DESCRIPTION OF SHARES

The Fund is a series of the  Company  and is  diversified.  The  Company  is an
open-end management investment company incorporated under the laws of the state
of Maryland.  The Company is authorized  to issue shares in separate  series or
Funds. There are ten mutual funds in the Company,  one of which is described in
this SAI.  Under the  Articles  of  Incorporation,  the Board of  Directors  is
authorized  to create new Funds in addition to those already  existing  without
shareholder approval.

     The Fund's assets and all income, earnings, profits, and proceeds thereof,
subject only to the rights of  creditors,  are  specifically  allocated to such
Fund.  They  constitute the  underlying  assets of the Fund, are required to be
segregated on the books of account,  and are to be charged with the expenses of
such Fund.  Any general  expenses of the  Company not readily  identifiable  as
belonging  to a  particular  Fund are  allocated  on the  basis  of the  Funds'
relative net assets during the fiscal year or in such other manner as the Board
determines  to be fair and  equitable.  Each share of each Fund  represents  an
equal  proportionate  interest  in that  Fund  with  every  other  share and is
entitled to such dividends and  distributions out of the net income and capital
gains belonging to that Fund when declared by the Board of Directors.

     Under the  provisions of the Bylaws of the Company,  no annual  meeting of
shareholders is required. Thus, there will ordinarily be no shareholder meeting
unless  required  by  the  1940  Act.  Under  certain  circumstances,  however,
shareholders  may apply for  shareholder  information  to obtain  signatures to
request a special  shareholder  meeting.  The Company may fill vacancies on the
Board or appoint new Directors if the result is that at least two-thirds of the
Directors have still been elected by  shareholders.  Moreover,  pursuant to the
Bylaws of the Company, any Director may be removed by the affirmative vote of a
majority of the outstanding  Company shares;  and holders of 10% or more of the
outstanding  shares of  theCompany  can require  Directors to call a meeting of
shareholders for the purpose of voting on the removal of one or more Directors.
The  Company  will  assist in  communicating  to other  shareholders  about the
meeting.  On any matter submitted to the shareholders,  the holder of each Fund
share  is  entitled  to one vote  per  share  (with  proportionate  voting  for
fractional  shares)  regardless  of the  relative  NAVs of the  Funds'  shares.
However,  on matters  affecting  an  individual  Fund,  a separate  vote of the
shareholders  of that  Fund  is  required.  Shareholders  of the  Fund  are not
entitled  to vote on any  matter  that  does not  affect  that  Fund but  which
requires a separate vote of another Fund.  Shares do not have cumulative voting
rights,  which means that holders of more than 50% of the shares voting for the
election of Directors can elect 100% of the Company's  Board of Directors,  and
the holders of less than 50% of the shares voting for the election of Directors
will not be able to elect any person as a Director.

     Except as permitted by the  Securities and Exchange  Commission,  whenever
the Fund is requested to vote on matters pertaining to the Portfolio,  the Fund
will hold a meeting of its  shareholders  and will cast all of its votes in the
same proportion as the votes of its  shareholders.  The shareholders who do not
vote will have their votes cast by the  Directors or officers of the Company in
the same proportion as the Fund's shareholders who do, in fact, vote.

                                      13
<PAGE>
     The  Portfolio,  in which all the Assets of the Fund will be invested,  is
organized as a trust under the laws of the state of New York.  The  Portfolio's
Declaration of Trust provides that the Fund and other entities investing in the
Portfolio  (E.G.,  other  investment  companies,   insurance  company  separate
accounts,  and common and  commingled  trust funds) will each be liable for all
obligations of the Portfolio. However, the risk of the Fund incurring financial
loss on account of such  liability  is limited to  circumstances  in which both
inadequate  insurance  exists and the  Portfolio  itself was unable to meet its
obligations. Accordingly, the Company's Directors believe that neither the Fund
nor you will be  adversely  affected by reason of the Fund's  investing  in the
Portfolio.

     Shareholders of a particular Fund might have the power to elect all of the
Directors  of the  Company  because  that  Fund  has a  majority  of the  total
outstanding  shares of the Company.  When issued,  each Fund's shares are fully
paid and  nonassessable,  have no pre-emptive or subscription  rights,  and are
fully transferable. There are no conversion rights.

                               TAX CONSIDERATIONS

The Fund intends to qualify as a regulated  investment company under Subchapter
M of the Code.  Accordingly,  the Fund will not be liable  for  federal  income
taxes on its taxable net investment income and net capital gains (capital gains
in excess of capital  losses) that are  distributed to  shareholders,  provided
that the Fund  distributes  at least 90% of its net  investment  income and net
short-term capital gain for the taxable year.

     To qualify as a regulated  investment company,  the Fund must, among other
things,  (1) derive in each  taxable year at least 90% of its gross income from
dividends,  interest, payments with respect to securities loans, gains from the
sale or other disposition of stock, securities or foreign currencies,  or other
income  derived  with  respect to its  business  of  investing  in such  stock,
securities,   or   currencies   (the  90%  test);   and  (2)  satisfy   certain
diversification  requirements,  at the  close  of each  quarter  of the  Fund's
taxable year.

     The Code imposes a nondeductible  4% excise tax on a regulated  investment
company that fails to  distribute  during each calendar year an amount at least
equal  to the sum of (1)  98% of its  taxable  net  investment  income  for the
calendar  year,  (2) 98% of its  capital  gain net income for the  twelve-month
period  ending on October 31, and (3) any prior  amounts not  distributed.  The
Fund intends to make such distributions as are necessary to avoid imposition of
the excise tax.

     Taxable  distributions  are generally  included in a  shareholder's  gross
income for the taxable year in which they are received.  Dividends  declared in
October,  November,  or December and made payable to  shareholders of record in
such a month will be deemed to have been  received on December  31, if the Fund
pays the dividend  during the following  January.  If a shareholder of the Fund
receives a  distribution  taxable as  long-term  capital  gain with  respect to
shares of the Fund and  redeems or  exchanges  the shares  before he or she has
held them for more than six months,  any loss on the  redemption  or  exchanges
that is less than or equal to the amount of the distribution will be treated as
long-term capital loss.

     The Portfolio is not subject to federal income taxation. Instead, the Fund
and other  investors  investing in the  Portfolio  must take into  account,  in
computing  their federal income tax liability,  their share of the  Portfolio's
income,  gains, losses,  deductions,  credits and tax preference items, without
regard to whether they have received any cash distributions from the Portfolio.

     Distributions  received by the Fund from the Portfolio  generally will not
result  in the  Fund's  recognizing  any gain or loss for  federal  income  tax
purposes,  except that: (1) gain will be recognized to the extent that any cash
distributed  exceeds the Fund's basis in its interest in the Portfolio prior to
the  distribution;  (2) income or gain may be realized if the  distribution  is
made in liquidation of the Fund's entire interest in the Portfolio and includes
a disproportionate  share of any unrealized  receivables held by the Portfolio;
and (3) loss may be recognized if the  distribution  is made in  liquidation of
the Fund's entire  interest in the Portfolio and consists solely of cash and/or
unrealized  receivables.  The Fund's  basis in its  interest  in the  Portfolio
generally  will equal the amount of cash and the basis of any property that the
Fund invests in the Portfolio, increased by the Fund's share of income from the
Portfolio,  and decreased by the amount of any cash distributions and the basis
of any property distributed from the Portfolio.

     Any  gain or  loss  realized  by a  shareholder  upon  the  sale or  other
disposition  of  shares of the  Fund,  or upon  receipt  of a  distribution  in
complete  liquidation  of the Fund,  generally  will be a capital  gain or loss
which  will  be  long-term  or   short-term,   generally   depending  upon  the
shareholder's  holding  period for the
                                      14
<PAGE>

shares.  Any loss  realized on a sale or  exchange  will be  disallowed  to the
extent the shares disposed of are replaced  (including shares acquired pursuant
to a dividend  reinvestment  plan) within a period of 61 days beginning 30 days
before and ending 30 days after  disposition of the shares. In such a case, the
basis of the shares  acquired will be adjusted to reflect the disallowed  loss.
Any loss  realized  by a  shareholder  on a  disposition  of shares held by the
shareholder for six months or less will be treated as a long-term  capital loss
to the  extent  of any  distributions  of net  capital  gains  received  by the
shareholder with respect to such shares. Additionally,  any account maintenance
fee deducted  from a  shareholder's  account will be treated as taxable  income
even though not received by the shareholder.

                     DIRECTORS AND OFFICERS OF THE COMPANY

The Board of Directors of the Company consists of seven Directors who supervise
the business  affairs of the  Company.  Set forth below are the  Directors  and
officers of the Company,  their  respective  offices and principal  occupations
during the last five years. Unless otherwise indicated, the business address of
each is 9800 Fredericksburg Road, San Antonio, TX 78288.

Robert G. Davis 1, 2
Director and Chairman of the Board of Directors
Age: 52

Deputy  Chief  Executive  Officer for  Capital  Management  of United  Services
Automobile  Association  (USAA)  (6/98-present);   President,  Chief  Executive
Officer,  Director, and Vice Chairman of the Board of Directors of USAA Capital
Corporation  and several of its  subsidiaries  and  affiliates  (1/97-present);
President,  Chief  Executive  Officer,  Director,  and Chairman of the Board of
Directors of USAA Financial Planning Network,  Inc.  (1/97-present);  Executive
Vice President,  Chief Operating  Officer,  Director,  and Vice Chairman of the
Board of Directors  of USAA  Financial  Planning  Network,  Inc.  (6/96-12/96);
Special Assistant to Chairman, USAA (6/96-12/96); President and Chief Executive
Officer,  Banc One Credit  Corporation  (12/95-6/96);  and  President and Chief
Executive  Officer,  Banc One  Columbus,  (8/91-12/95).  Mr.  Davis serves as a
Director/Trustee  and Chairman of the Boards of  Directors/Trustees  of each of
the remaining  funds within the USAA Family of Funds;  Director and Chairman of
the Boards of Directors of USAA  Investment  Management  Company  (IMCO),  USAA
Shareholder  Account Services,  USAA Federal Savings Bank, and USAA Real Estate
Company.

Michael J.C. Roth 1, 2
Director, President, and Vice Chairman of the Board of Directors
Age: 57

Chief Executive Officer, IMCO (10/93-present);  President,  Director,  and Vice
Chairman of the Board of  Directors,  IMCO  (1/90-present).  Mr. Roth serves as
President,   Director/Trustee,   and   Vice   Chairman   of   the   Boards   of
Directors/Trustees  of each of the  remaining  funds  within the USAA Family of
Funds and USAA Shareholder  Account  Services;  Director of USAA Life Insurance
Company; Trustee and Vice Chairman of USAA Life Investment Trust.

John W. Saunders, Jr. 1, 2, 4
Director and Vice President
Age: 64

Senior Vice President,  Fixed Income  Investments,  IMCO  (10/85-present).  Mr.
Saunders serves as Director/Trustee and Vice President of each of the remaining
funds within the USAA Family of Funds;  Director of IMCO; Senior Vice President
of USAA Shareholder  Account  Services;  Vice President of USAA Life Investment
Trust.

Barbara B. Dreeben 3, 4, 5
200 Patterson #1008
San Antonio, TX  78209
Director
Age: 53

President,   Postal  Addvantage  (7/92-present);   Consultant,   Nancy  Harkins
Stationer  (8/91-12/95).  Mrs. Dreeben serves as a Director/Trustee  of each of
the remaining funds within the USAA Family of Funds.

                                      15
<PAGE>
Howard L. Freeman, Jr. 2, 3, 4, 5
2710 Hopeton
San Antonio, TX  78230
Director
Age: 63

Retired. Assistant General Manager for Finance, San Antonio City Public Service
Board  (1976-1996).  Mr.  Freeman serves as a  Director/Trustee  of each of the
remaining funds within the USAA Family of Funds.

Robert L. Mason, Ph.D. 3, 4, 5
12823 Queens Forest
San Antonio, TX  78230
Director
Age: 52

Staff Analyst,  Statistical  Analysis  Section,  Southwest  Research  Institute
(9/98-present);  Manager,  Statistical  Analysis  Section,  Southwest  Research
Institute  (8/75-9/98).  Dr. Mason serves as a Director/Trustee  of each of the
remaining funds within the USAA Family of Funds.

Richard A. Zucker 3, 4, 5
407 Arch Bluff
San Antonio, TX  78216
Director
Age: 55

Vice President, Beldon Roofing and Remodeling (1985-present). Mr. Zucker serves
as a Director/Trustee  of each of the remaining funds within the USAA Family of
Funds.

Michael D. Wagner 1
Secretary
Age: 50

Senior Vice President,  CAPCO General Counsel (01/99-present);  Vice President,
Corporate Counsel, USAA (1982-01/99).  Mr. Wagner has held various positions in
the  legal  department  of USAA  since  1970  and  serves  as  Vice  President,
Secretary, and Counsel, IMCO and USAA Shareholder Account Services;  Secretary,
of each of the remaining funds within the USAA Family of Funds; Vice President,
Corporate Counsel for various other USAA subsidiaries and affiliates.

Alex M. Ciccone 1
Assistant Secretary
Age: 49

Vice  President,  Compliance,  IMCO  (12/94-present);  Vice President and Chief
Operating Officer,  Commonwealth  Shareholder Services  (6/94-11/94);  and Vice
President,  Compliance,  IMCO  (12/91-5/94).  Mr.  Ciccone  serves as Assistant
Secretary of each of the remaining funds within the USAA Family of Funds.

Mark S. Howard 1
Assistant Secretary
Age: 35

Assistant Vice President,  Securities Counsel,  USAA (2/98-present);  Executive
Director,  Securities  Counsel,  USAA  (9/96-2/98);  Senior Associate  Counsel,
Securities  Counsel,  USAA  (5/95-8/96);  Attorney,  Kirkpatrick & Lockhart LLP
(9/90-4/95).  Mr.  Howard  serves as Assistant  Vice  President  and  Assistant
Secretary of IMCO and USAA Shareholder Account Services; Assistant Secretary of
each of the  remaining  Funds within the USAA Family of Funds;  Assistant  Vice
President,   Securities  Counsel,  for  various  other  USAA  subsidiaries  and
affiliates.

                                      16
<PAGE>
Sherron A. Kirk 1
Treasurer
Age: 54

Vice President, Senior Financial Officer, IMCO (8/98-present);  Vice President,
Controller,  IMCO (10/92-  8/98).  Mrs. Kirk serves as Treasurer of each of the
remaining  funds  within  the USAA  Family of  Funds;  Vice  President,  Senior
Financial Officer of USAA Shareholder Account Services.

Caryl Swann 1
Assistant Treasurer
Age: 51

Executive  Director,  Mutual  Fund  Analysis & Support,  IMCO  (10/98-present);
Director, Mutual Fund Portfolio Analysis & Support, IMCO (2/98-10/98); Manager,
Mutual  Fund  Accounting,  IMCO  (7/92-2/98).  Ms.  Swann  serves as  Assistant
Treasurer for each of the remaining funds within the USAA Family of Funds.

- ---------------

 1 Indicates  those  Directors and officers who are employees of the Manager or
   affiliated companies and are considered  "interested persons" under the 1940
   Act.
 2 Member of Executive Committee
 3 Member of Audit Committee
 4 Member of Pricing and Investment Committee
 5 Member of Corporate Governance Committee

     Between the meetings of the Board of Directors  and while the Board is not
in session,  the  Executive  Committee  of the Board of  Directors  has all the
powers  and may  exercise  all the  duties  of the  Board of  Directors  in the
management  of the  business of the Company  that may be delegated to it by the
Board. The Pricing and Investment Committee of the Board of Directors acts upon
various investment-related issues and other matters that have been delegated to
it by the Board.  The Audit  Committee  of the Board of  Directors  reviews the
financial  statements and the auditor's reports and undertakes  certain studies
and analyses as directed by the Board.  The Corporate  Governance  Committee of
the Board of Directors  maintains  oversight of the organization,  performance,
and effectiveness of the Board and independent Directors.

     In addition to the  previously  listed  Directors  and/or  officers of the
Company  who also  serve as  Directors  and/or  officers  of the  Manager,  the
following  individuals are Directors and/or executive  officers of the Manager:
Carl W. Shirley, Senior Vice President,  Insurance Company Portfolios;  John J.
Dallahan,  Senior Vice President,  Investment  Services;  and David G. Peebles,
Senior Vice President,  Equity Investments.  There are no family  relationships
among the Directors, officers, and managerial level employees of the Company or
its Manager.

     The following table sets forth information  describing the compensation of
the current  Directors of the Company for their  services as Directors  for the
fiscal year ended December 31, 1998.

     Name                              Aggregate            Total  Compensation
      of                             Compensation              from the USAA
   Director                        from the Company         Family of Funds (b)
   --------                        ----------------         -------------------

Robert G. Davis                          None (a)                    None (a)
Barbara B. Dreeben                     $ 9,536                   $ 36,000
Howard L. Freeman, Jr.                 $ 9,536                   $ 36,000
Robert L. Mason                        $ 9,536                   $ 36,000
Michael J.C. Roth                        None (a)                    None (a)
John W. Saunders, Jr.                    None (a)                    None (a)
Richard A. Zucker                      $ 9,536                   $ 36,000

- ----------------

 (a) Robert  G.  Davis,  Michael  J.C.  Roth,  and John W.  Saunders,  Jr.  are
     affiliated with the Company's investment adviser,  IMCO, and, accordingly,
     receive  no  remuneration  from the  Company or any other Fund of the USAA
     Family of Funds.
                                      17
<PAGE>
 (b) At  December  31,  1998,  the  USAA  Family  of  Funds  consisted  of four
     registered   investment  companies  offering  35  individual  funds.  Each
     Director  presently  serves as a Director  or  Trustee of each  investment
     company  in the USAA  Family of Funds.  In  addition,  Michael  J.C.  Roth
     presently serves as a Trustee of USAA Life Investment  Trust, a registered
     investment  company advised by IMCO,  consisting of seven funds avaialable
     to the  public  only  through  the  purchase  of certain variable  annuity
     contracts  and  variable  life  insurance  policies  offered by USAA  Life
     Insurance  Company.  Mr. Roth receives no  compensation as Trustee of USAA
     Life Investment Trust.

     All of the above Directors are also  Directors/Trustees of the other funds
in the  USAA  Family  of  Funds.  No  compensation  is paid by any  fund to any
Director/Trustee  who is a  director,  officer,  or  employee  of  IMCO  or its
affiliates.  No  pension or  retirement  benefits  are  accrued as part of fund
expenses.  The Company reimburses certain expenses of the Directors who are not
affiliated  with the investment  adviser.  As of January 31, 1999, the officers
and Directors of the Company and their  families as a group owned  beneficially
or of record less than 1% of the outstanding shares of the Company.

     As of January 31, 1999, USAA and its affiliates  owned  49,358,672  shares
(41.4%) of the USAA S&P 500 Index Fund.

     The Company knows of no other persons who, as of January 31, 1999, held of
record  or owned  beneficially  5% or more of the  voting  stock of the  Fund's
shares.

                    TRUSTEES AND OFFICERS OF THE PORTFOLIO

The Trustees  and officers of the  Portfolio  and their  birthdates,  principal
occupations  during the past five years,  and  addresses  are set forth  below.
Their titles may have varied during that period.  Unless  otherwise  indicated,
the address of each Trustee and officer is 5800  Corporate  Drive,  Pittsburgh,
Pennsylvania, 15237-5829.

     CHARLES P.  BIGGAR  (birthdate:  October 13,  1930) --  Trustee;  Retired;
formerly  Vice  President  of  International   Business  Machines  ("IBM")  and
President of the National Services and the Field Engineering  Divisions of IBM.
His address is 12 Hitching Post Lane, Chappaqua, New York 10514.

     S. LELAND DILL (birthdate:  March 28, 1930) -- Trustee; Retired; Director,
Coutts  Group;  Coutts  (U.S.A.)  International;  Coutts Trust  Holdings,  Ltd;
Director, Zweig Series Trust; formerly Partner of KPMG Peat Marwick;  Director,
Vinters  International  Company Inc.;  General  Partner of Pemco (an investment
company  registered under the 1940 Act). His address is 5070 North Ocean Drive,
Singer Island, Florida 33404.

     PHILIP SAUNDERS, JR. (birthdate:  October 11, 1935) -- Trustee; Principal,
Philip Saunders Associates (Consulting);  former Director of Financial Industry
Consulting,  Wolf & Company; President, John Hancock Home Mortgage Corporation;
and Senior Vice  President of Treasury  and  Financial  Services,  John Hancock
Mutual Life  Insurance  Company,  Inc.  His  address is 445 Glen Road,  Weston,
Massachusetts 02193.

Unless otherwise  specified,  each officer listed below holds the same position
with the Trust and the Portfolio.

     JOHN Y. KEFFER (birthdate: July 14, 1942) -- President and Chief Executive
Officer;  President,  Forum Financial  Group. His address is 2 Portland Square,
Portland, Maine 04101.

     JOSEPH  A.  FINELLI  (birthdate:  January  24,  1957) --  Treasurer;  Vice
President,  BT Alex. Brown Incorporated and Vice President,  Investment Company
Capital  Corp.  (registered  investment  adviser),  September  1995 to present;
formerly, Vice President and Treasurer, The Delaware Group of Funds (registered
investment  companies) and Vice  President,  Delaware  Management  Company Inc.
(investments), 1980 to August 1995. His address is One South Street, Baltimore,
Maryland 21202.

     DANIEL O. HIRSCH (birthdate:  March 27, 1954) -- Secretary;  Principal, BT
Alex.  Brown since July 1998;  Assistant  General  Counsel in the Office of the
General  Counsel at the United States  Securities and Exchange  Commission from
1993 to 1998. His address is 2901 Dorset Avenue, Chevy Chase, Maryland 20815.

     Messrs.  Keffer,  Finelli and Hirsch also hold similar positions for other
investment companies for which ICC Distributors,  or an affiliate serves as the
principal underwriter.

                                     18
<PAGE>
     No person who is an officer or director of Bankers  Trust is an officer or
Trustee of the Portfolio. No director,  officer or employee of ICC Distributors
or any of its affiliates will receive any  compensation  from the Portfolio for
serving as an officer or Trustee of the Portfolio and certain other  investment
companies advised by Bankers Trust (the Fund Complex).

     The  following  table  reflects fees paid to the Trustees of the Portfolio
for the year ended December 31, 1998.

                           TRUSTEE COMPENSATION TABLE

                                   Aggregate          Total Compensation
           Name of Person,       Compensation         from Fund Complex
              Position          from Portfolio         Paid to Trustees
              --------          --------------         ----------------

       Charles P. Biggar
       Trustee                     $ 1,148                 $36,250

       S. Leland Dill
       Trustee                     $   971                 $36,250

       Philip Saunders, Jr.
       Trustee                     $   977                 $36,250

     Bankers Trust  reimbursed  the  Portfolio for a portion of their  Trustees
fees for the period above. Refer to the following  sections  INVESTMENT ADVISER
and ADMINISTRATOR.

                               INVESTMENT ADVISER

As described in the Fund's  Prospectus,  USAA Investment  Management Company is
the Manager and investment adviser, providing the services under the Management
Agreement. The Manager, a wholly owned subsidiary of United Services Automobile
Association (USAA), a large,  diversified financial services  institution,  was
organized in May 1970,  has served as investment  adviser and  underwriter  for
USAA Mutual Fund, Inc. from its inception.

     In addition to the services it provides  under the  Management  Agreement,
the Manager  advises and manages the  investments  for USAA and its  affiliated
companies  as well as those of USAA  Investment  Trust,  USAA Tax Exempt  Fund,
Inc., USAA State Tax-Free Trust, and USAA Life Investment Trust. As of the date
of this SAI,  total assets under  management by the Manager were  approximately
$40 billion, of which approximately $25 billion were in mutual fund portfolios.

     Under  the  Management  Agreement,  the  Manager  presently  monitors  the
services  provided by Bankers Trust to the Portfolio.  The Manager  receives no
fee for providing these monitoring  services.  In the event the Fund's Board of
Directors  determines it is in the best interests of the Fund's shareholders to
withdraw its investment in the Portfolio,  the Manager would become responsible
for directly managing the assets of the Fund. In such event, the Fund would pay
the  Manager an annual fee of .10% of the Fund's  ANA,  accrued  daily and paid
monthly.

     The  Management  Agreement will remain in effect until June  30, 2000, for
the Fund and will continue in effect from year to year  thereafter for the Fund
as long as it is approved at least annually by a vote of the outstanding voting
securities  of the  Fund  (as  defined  by the  1940  Act) or by the  Board  of
Directors  (on behalf of such Fund)  including a majority of the  Directors who
are not interested  persons of the Manager or (otherwise  than as Directors) of
the Company,  at a meeting  called for the purpose of voting on such  approval.
The Management Agreement may be terminated at any time by either the Company or
the Manager on 60 days' written notice. It will automatically  terminate in the
event of its assignment (as defined by the 1940 Act).

     Bankers Trust,  subject to the  supervision  and direction of the Board of
Trustees  of the  Portfolio,  manages  the  Portfolio  in  accordance  with the
Portfolio's   investment  objective  and  stated  investment  policies,   makes
investment  decisions  for the  Portfolio,  places  orders to purchase and sell
securities  and other  financial  instruments  on behalf of the  Portfolio  and
employs  professional  investment  managers and securities analysts who provide
research services to the Portfolio.  Bankers Trust may utilize the expertise of
any of its world wide  subsidiaries  and affiliates to assist it in its role as
investment  adviser.  All orders for 

                                      19
<PAGE>
investment  transactions on behalf of the Portfolio are placed by Bankers Trust
with  broker-dealers  and  other  financial  intermediaries  that  it  selects,
including  those  affiliated with Bankers Trust. A Bankers Trust affiliate will
be  used in  connection  with a  purchase  or  sale  of an  investment  for the
Portfolio  only if Bankers Trust believes that the  affiliate's  charge for the
transaction does not exceed usual and customary levels.  The Portfolio will not
invest in  obligations  for which Bankers Trust or any of its affiliates is the
ultimate obligor or accepting bank. The Portfolio may,  however,  invest in the
obligations of correspondents and customers of Bankers Trust.

     Under the terms of the  Portfolio's  investment  advisory  agreement  with
Bankers  Trust (the Advisory  Agreements),  Bankers Trust manages the Portfolio
subject  to the  supervision  and  direction  of the Board of  Trustees  of the
Portfolio.   Bankers  Trust  will:  (1)  act  in  strict  conformity  with  the
Portfolio's  Declaration of Trust, the 1940 Act and the Investment Advisers Act
of 1940, as the same may from time to time be amended; (2) manage the Portfolio
in accordance  with the  Portfolio's  investment  objective,  restrictions, and
policies;  (3) make  investment  decisions  for the  Portfolio;  and (4)  place
purchase and sale orders for  securities  and other  financial  instruments  on
behalf of the Portfolio.

     Bankers Trust bears all expenses in  connection  with the  performance  of
services  under the Advisory  Agreement.  The Fund and the Portfolio  each bear
certain other expenses incurred in its operation,  including:  taxes, interest,
brokerage  fees and  commissions,  if any; fees of Trustees of the Portfolio or
Directors  of the Company  who are not  officers,  directors, or  employees  of
Bankers Trust, ICC Distributors or any of their affiliates,  the Manager or any
of their affiliates; SEC fees and state Blue Sky qualification fees; charges of
custodians  and transfer  and dividend  disbursing  agents;  certain  insurance
premiums;  outside  auditing  and  legal  expenses;  costs  of  maintenance  of
corporate  existence;  costs  attributable  to  investor  services,  including,
without limitation,  telephone and personnel  expenses;  costs of preparing and
printing  prospectuses and statements of additional  information for regulatory
purposes and for distribution to existing shareholders;  costs of shareholders'
reports  and  meetings of shareholders, officers, and Trustees of the Portfolio
or Directors of the Company; and any extraordinary expenses.

     For the years ended  December  31, 1998,  1997,  and 1996,  Bankers  Trust
earned $3,186,503,  $2,430,147, and $1,505,963,  respectively,  as compensation
for investment  advisory  services  provided to the Portfolio.  During the same
periods,   Bankers  Trust  reimbursed  $799,296,   $1,739,490,   and  $870,024,
respectively,  to the Portfolio to cover advisory and  administrative  expenses
exceeding expense limitations that were in effect for those periods.

     Bankers  Trust  may have  deposit,  loan,  and  other  commercial  banking
relationships  with the issuers of obligations  that may be purchased on behalf
of the Portfolio,  including  outstanding  loans to such issuers which could be
repaid in whole or in part with the proceeds of securities  so purchased.  Such
affiliates  deal,  trade, and invest for their own accounts in such obligations
and are among the leading dealers of various types of such obligations. Bankers
Trust has informed the Portfolio that, in making its investment  decisions,  it
does not obtain or use material inside  information in its possession or in the
possession of any of its affiliates.  In making investment  recommendations for
the  Portfolio,  Bankers  Trust  will not  inquire  or take into  consideration
whether an issuer of securities  proposed for purchase or sale by the Portfolio
is a customer of Bankers Trust,  its parent,  or its subsidiaries or affiliates
and, in dealing with its customers,  Bankers Trust,  its parent,  subsidiaries,
and affiliates will not inquire or take into  consideration  whether securities
of such  customers  are  held by any  fund  managed  by  Bankers  Trust or such
affiliate.

     On  March  11,  1999,  Bankers  Trust  announced  that it had  reached  an
agreement with the United States  Attorney's Office in the Southern District of
New York to resolve an  investigation  concerning  inappropriate  transfers  of
unclaimed funds and related  recordkeeping  problems that occurred between 1994
and early 1996.  Pursuant to its  agreement  with the U.S.  Attorney's  Office,
Bankers  Trust  pleaded  guilty to  misstating  entries in the bank's books and
records  and  agreed  to  pay  a  $60  million  fine  to  federal  authorities.
Separately, Bankers Trust agreed to pay a $3.5 million fine to the state of New
York.  The  events  leading  up to the  guilty  pleas  did not arise out of the
investment  advisory or mutual fund  management  activities of Bankers Trust or
its affiliates.

     As a result of the plea, absent an order from the SEC, Bankers Trust would
not be able to continue to provide  investment  advisory  services to the Fund.
The SEC  has  granted  a  temporary  order  to  permit  Bankers  Trust  and its
affiliates to continue to provide  investment  advisory  services to registered
investment companies. There is no assurance that the SEC will grant a permanent
order.
                                      20
<PAGE>

                                 ADMINISTRATOR

Under the terms of the Fund's  administration  agreement with the Manager,  the
Manager is  obligated  on a  continuous  basis to provide  such  administrative
services as the Board of Directors of the Company  reasonably  deems  necessary
for the proper administration of the Fund. The Manager will generally assist in
all aspects of the Fund's  operations;  supply and maintain office  facilities,
statistical and research data, data processing services, clerical,  accounting,
bookkeeping  and  recordkeeping  services  (including  without  limitation  the
maintenance  of such books and records as are  required  under the 1940 Act and
the rules thereunder, except as maintained by other agents), internal auditing,
executive and  administrative  services,  and stationery  and office  supplies;
prepare reports to shareholders; prepare and file tax returns; supply financial
information  and  supporting  data for reports to and filings  with the SEC and
various  state  Blue  Sky  authorities;  supply  supporting  documentation  for
meetings of the Board of Directors;  provide  monitoring reports and assistance
regarding  compliance with its Articles of Incorporation,  by-laws,  investment
objectives and policies,  and with federal and state securities  laws;  arrange
for appropriate insurance coverage;  calculate net asset values, net income and
realized  capital  gains  or  losses;  and  negotiate  arrangements  with,  and
supervise  and  coordinate  the  activities  of,  agents  and  others to supply
services.

     Under the  administration and services agreement between the Portfolio and
Bankers Trust, Bankers Trust is obligated on a continuous basis to provide such
administrative  services as the Board of Trustees of the  Portfolio  reasonably
deems necessary for the proper  administration of the Portfolio.  Bankers Trust
will generally assist in all aspects of the Portfolio's operations;  supply and
maintain  office  facilities  (which may be in Bankers  Trust's  own  offices),
statistical and research data, data processing services, clerical,  accounting,
bookkeeping  and  recordkeeping  services  (including  without  limitation  the
maintenance  of such books and records as are  required  under the 1940 Act and
the rules thereunder, except as maintained by other agents), internal auditing,
executive and  administrative  services,  and stationery  and office  supplies;
prepare reports to investors;  prepare and file tax returns;  supply  financial
information  and  supporting  data for reports to and filings  with the SEC and
various  state  Blue  Sky  authorities;  supply  supporting  documentation  for
meetings of the Board of Trustees;  provide  monitoring  reports and assistance
regarding  compliance  with  its  Declaration  of  Trust,  by-laws,  investment
objectives and policies,  and with federal and state securities  laws;  arrange
for appropriate insurance coverage;  calculate net asset values, net income and
realized  capital  gains  or  losses;  and  negotiate  arrangements  with,  and
supervise  and  coordinate  the  activities  of,  agents  and  others to supply
services.

     For the fiscal years ended December 31, 1998, 1997, and 1996 Bankers Trust
earned $676,625,  $1,215,073, and $752,981,  respectively,  as compensation for
administrative  and other services  provided to the  Portfolio.  For the fiscal
year ended December 31, 1998,  Bankers Trust waived $139,957 in  administrative
fees charged to the Portfolio.

     For the fiscal years ended  December 31, 1998, and 1997 the Manager earned
$461,363,  and $93,126,  respectively,  as compensation for  administrative and
other  services  provided to the Fund.  For the fiscal year ended  December 31,
1996, the Manager did not receive any compensation for administrative and other
services and waived $14,175 in administrative fees charged to the Fund.

     Effective  as of January 1, 1999,  the  Manager  entered  into a servicing
agreement  with Bankers Trust pursuant to which Bankers Trust has agreed to pay
the Manager a fee for performing the following  services:  providing  marketing
and promotional  materials and other information  relating to the Portfolio and
the  Fund to  current  and  prospective  shareholders  of the  Fund;  assisting
shareholders in opening or maintaining  accounts with the Fund; and maintaining
and preserving  records in connection with providing these services.  For these
services,  Bankers  Trust has  agreed to pay the  Manager a monthly  fee in the
amount of .02 of 1% per annum of the  amount  by which  the  average  daily net
assets of the Fund invested in the Portfolio exceed $1.75 billion.

                              GENERAL INFORMATION

UNDERWRITER

The Company has an agreement  with the Manager for exclusive  underwriting  and
distribution  of the Fund's  shares on a continuing, best-efforts  basis.  This
agreement  provides that the Manager will receive no fee or other  compensation
for such distribution services.
                                      21
<PAGE>
TRANSFER AGENT

The Transfer  Agent  performs  transfer  agent services for the Company under a
Transfer Agency Agreement.  Services include maintenance of shareholder account
records,  handling of communications  with  shareholders,  distribution of Fund
dividends,  and  production  of reports  with  respect to account  activity for
shareholders and the Company.

CUSTODIAN

The  Custodian  is  responsible  for,  among  other  things,  safeguarding  and
controlling  the  Company's  cash and  securities,  handling  the  receipt  and
delivery of securities,  and collecting interest on the Company's investment in
the  Portfolio.  Bankers  Trust serves as  custodian  for both the Fund and the
Portfolio.  As custodian,  it holds both the Fund's and the Portfolio's assets.
Bankers  Trust will comply  with the  self-custodian  provisions  of Rule 17f-2
under the 1940 Act.

COUNSEL

Goodwin,  Procter & Hoar LLP,  Exchange Place,  Boston,  MA 02109,  will review
certain legal matters for the Company in connection  with the shares offered by
the Prospectus.  Willkie Farr & Gallagher,  787 Seventh  Avenue,  New York, New
York 10019-6099 serves as counsel to the Portfolio.

INDEPENDENT ACCOUNTANTS

PricewaterhouseCoopers  LLP, 250 West Pratt Street,  Baltimore,  Maryland 21201
has  been  selected  as the  Independent  Accountants  for  the  Fund  and  the
Portfolio.

BANKING REGULATORY MATTERS

Bankers Trust has been advised by its counsel that in its opinion Bankers Trust
may  perform  the  services  for the  Portfolio  contemplated  by the  Advisory
Agreements and other activities for the Fund and the Portfolio described in the
Prospectus and this SAI without  violation of the  Glass-Steagall  Act or other
applicable banking laws or regulations.  However,  counsel has pointed out that
future changes in either federal or state statutes and  regulations  concerning
the  permissible  activities  of banks or trust  companies,  as well as  future
judicial or administrative  decisions or  interpretations of present and future
statutes and  regulations,  might  prevent  Bankers  Trust from  continuing  to
perform  those  services  for the Trust and the  Portfolio.  State laws on this
issue may differ from the interpretations of relevant federal law and banks and
financial institutions may be required to register as dealers pursuant to state
securities law. If the circumstances  described above should change,  the Board
of Trustees  would  review the  relationship  with  Bankers  Trust and consider
taking all actions necessary in the circumstances.

                        CALCULATION OF PERFORMANCE DATA

Information  regarding the total return of the Fund is provided under COULD THE
VALUE  OF YOUR  INVESTMENT  IN THIS  FUND  FLUCTUATE?  in its  Prospectus.  See
VALUATION  OF  SECURITIES  herein for a  discussion  of the manner in which the
Fund's price per share is calculated.

TOTAL RETURN

The Fund may advertise  performance in terms of average annual total return for
1-, 5-, and 10-year periods, or for such lesser periods as the Fund has been in
existence.  Average  annual  total  return is  computed  by finding the average
annual  compounded  rates of return  over the  periods  that  would  equate the
initial  amount  invested  to the ending  redeemable  value,  according  to the
following formula:

                                P(1 + T)n = ERV

     Where:     P  =  a hypothetical initial payment of $1,000
                T  =  average annual total return
                n  =  number of years
              ERV  =  ending  redeemable  value  of  a  hypothetical  $1,000
                      payment  made at the  beginning of the 1-, 5-, or 10-year
                      periods at the end of the year or period

     The  calculation  assumes any charges are deducted from the initial $1,000
payment and assumes all dividends and distributions by such Fund are reinvested
at the price  stated in the  Prospectus  on the  reinvestment  dates during the
period and  includes  all  recurring  fees that are charged to all  shareholder
accounts. For periods after December 31, 1998, performance does not reflect the
annual $10 account maintenance fee, which fee is waived for accounts of $10,000
or  more.  As of  December  31,  1998,  the  Fund's  average  account  size was
approximately $28,242.

     The Fund's  total  return for the fiscal year ended  December 31, 1998 was
28.62%.
                                      22
<PAGE>

                  APPENDIX A - COMPARISON OF FUND PERFORMANCE

Occasionally,  we may make  comparisons  in  advertising  and sales  literature
between  the Fund  contained  in this SAI and other Funds in the USAA Family of
Funds. These comparisons may include such topics as risk and reward, investment
objectives, investment strategies, and performance.

     Fund  performance  also may be compared to the performance of broad groups
of  mutual  funds  with  similar  investment  goals  or  unmanaged  indices  of
comparable  securities.  Evaluations  of Fund  performance  made by independent
sources  may also be used in  advertisements  concerning  the  Fund,  including
reprints of, or selections  from,  editorials or articles  about the Fund.  The
Fund or its  performance  may also be  compared to products  and  services  not
constituting securities subject to registration under the 1933 Act such as, but
not limited to, certificates of deposit and money market accounts.  Sources for
performance  information  and  articles  about the Fund may include but are not
restricted to the following:

AAII  JOURNAL,  a monthly  association  magazine  for  members of the  American
Association of Individual Investors.

ARIZONA REPUBLIC, a newspaper that may cover financial and investment news.

AUSTIN AMERICAN-STATESMAN, a newspaper that may cover financial news.

BANK RATE MONITOR, a service that publishes rates on various bank products such
as CDs, MMDAs, and credit cards.

BARRON'S,  a Dow Jones and Company,  Inc.  business and  financial  weekly that
periodically reviews mutual fund performance data.

BUSINESS  WEEK,  a national  business  weekly  that  periodically  reports  the
performance rankings and ratings of a variety of mutual funds.

CHICAGO TRIBUNE, a newspaper that may cover financial news.

CONSUMER  REPORTS,  a  monthly  magazine  that  from  time to time  reports  on
companies in the mutual fund industry.

DALLAS MORNING NEWS, a newspaper that may cover financial news.

DENVER POST, a newspaper that may quote financial news.

FINANCIAL PLANNING, a monthly magazine that may periodically review mutual fund
companies.

FINANCIAL SERVICES WEEK, a weekly newspaper that covers financial news.

FINANCIAL WORLD, a monthly magazine that periodically features companies in the
mutual fund industry.

FORBES,  a  national  business   publication  that  periodically   reports  the
performance of companies in the mutual fund industry.

FORTUNE,   a  national  business   publication  that  periodically   rates  the
performance of a variety of mutual funds.

FUND ACTION, a mutual fund news report.

HOUSTON CHRONICLE, a newspaper that may cover financial news.

HOUSTON POST, a newspaper that may cover financial news.

IBC'S MONEY FUND REPORT,  a weekly  publication  of IBC Financial  Data,  Inc.,
reporting on the  performance of the nation's  money market funds,  summarizing
money market fund  activity,  and  including  certain  averages as  performance
benchmarks, specifically "IBC's Taxable First Tier Fund Average."

IBC'S MONEY MARKET INSIGHT,  a monthly money market industry  analysis prepared
by IBC Financial Data, Inc.

IBC'S  MONEYLETTER,  a biweekly  newsletter that covers financial news and from
time to time rates specific mutual funds.

INCOME AND SAFETY, a monthly newsletter that rates mutual funds.

INVESTECH, a bimonthly investment newsletter.

INVESTMENT  ADVISOR,  a monthly  publication  directed primarily to the advisor
community; includes ranking of mutual funds using a proprietary methodology.

INVESTMENT  COMPANY  INSTITUTE,   the  national  association  of  the  American
investment company industry.

INVESTOR'S BUSINESS DAILY, a newspaper that covers financial news.

                                      23
<PAGE>

KIPLINGER'S   PERSONAL  FINANCE  MAGAZINE,   a  monthly   investment   advisory
publication  that  periodically  features  the  performance  of  a  variety  of
securities.

LIPPER ANALYTICAL SERVICES,  INC.'S EQUITY FUND PERFORMANCE  ANALYSIS, a weekly
and monthly publication of industry-wide mutual fund averages by type of fund.

LIPPER ANALYTICAL  SERVICES,  INC.'S FIXED INCOME FUND PERFORMANCE  ANALYSIS, a
monthly publication of industry-wide  mutual fund performance  averages by type
of fund.

LOS ANGELES TIMES, a newspaper that may cover financial news.

LOUIS RUKEYSER'S WALL STREET, a publication for investors.

MEDICAL  ECONOMICS,  a monthly  magazine  providing  information to the medical
profession.

MONEY, a monthly  magazine that features the performance of both specific funds
and the mutual fund industry as a whole.

MORNINGSTAR 5 STAR INVESTOR,  a monthly  newsletter that covers  financial news
and rates mutual funds by

MORNINGSTAR, INC. (a data service which tracks open-end mutual funds).

MUTUAL FUND FORECASTER, a monthly newsletter that ranks mutual funds.

MUTUAL FUND INVESTING, a newsletter covering mutual funds.

MUTUAL  FUND  PERFORMANCE   REPORT,  a  monthly   publication  of  mutual  fund
performance and rankings, produced by Morningstar, Inc.

MUTUAL  FUNDS  MAGAZINE,  a  monthly  publication   reporting  on  mutual  fund
investing.

MUTUAL FUND SOURCE BOOK, an annual  publication  produced by Morningstar,  Inc.
which describes and rates mutual funds.

MUTUAL  FUND  VALUES,  a  biweekly   guidebook  to  mutual  funds  produced  by
Morningstar, Inc.

NEWSWEEK, a national business weekly.

NEW YORK TIMES, a newspaper that may cover financial news.

NO LOAD FUND  INVESTOR,  a  newsletter  covering  companies  in the mutual fund
industry.

ORLANDO SENTINEL, a newspaper that may cover financial news.

PERSONAL  INVESTOR,  a monthly  magazine that from time to time features mutual
fund companies and the mutual fund industry.

SAN ANTONIO  BUSINESS  JOURNAL,  a weekly  newspaper that  periodically  covers
mutual fund companies as well as financial news.

SAN ANTONIO EXPRESS-NEWS, a newspaper that may cover financial news.

SAN FRANCISCO CHRONICLE, a newspaper that may cover financial news.

SMART MONEY,  a monthly  magazine  featuring news and articles on investing and
mutual funds.

USA TODAY, a newspaper that may cover financial news.

U.S.  NEWS AND WORLD  REPORT,  a national  business  weekly  that  periodically
reports mutual fund performance data.

WALL  STREET  JOURNAL,  a Dow Jones and  Company,  Inc.  newspaper  that covers
financial news.

WASHINGTON POST, a newspaper that may cover financial news.

WEISENBERGER  MUTUAL FUNDS INVESTMENT REPORT, a monthly newsletter that reports
on both specific mutual fund companies and the mutual fund industry as a whole.

WORTH,  a magazine that covers  financial  and  investment  subjects  including
mutual funds.

YOUR MONEY, a monthly magazine directed toward the novice investor.

     In  addition  to the sources  above,  performance  of the Fund may also be
tracked by Lipper Analytical Services,  Inc. and Morningstar,  Inc. A Fund will
be compared to Lipper's or Morningstar's appropriate fund category according to
its objective and portfolio  holdings.  Footnotes in  advertisements  and other
sales literature will include the time period applicable for any rankings used.

     Other sources for total return and other performance data that may be used
by the Fund or by those publications listed previously are Schabaker Investment
Management  and Investment  Company Data,  Inc. These are services that collect
and compile data on mutual fund companies.

                                      24
<PAGE>
                       APPENDIX B - DOLLAR-COST AVERAGING

Dollar-cost  averaging is a systematic  investing method,  which can be used by
investors as a disciplined technique for investing.  A fixed amount of money is
invested in a security (such as a stock or mutual fund) on a regular basis over
a period of time,  regardless  of whether  securities  markets are moving up or
down.

     This  practice  reduces  average  share costs to the investor who acquires
more shares in periods of lower  securities  prices and fewer shares in periods
of higher prices.

     While  dollar-cost  averaging does not assure a profit or protect  against
loss in declining markets, this investment strategy is an effective way to help
calm the effect of fluctuations in the financial markets.  Systematic investing
involves  continuous  investment in securities  regardless of fluctuating price
levels of such securities. Investors should consider their financial ability to
continue purchases through periods of low and high price levels.

     As the following chart  illustrates,  dollar-cost  averaging tends to keep
the overall cost of shares lower.  This example is for  illustration  only, and
different trends would result in different average costs.

                        HOW DOLLAR-COST AVERAGING WORKS

                     $100 Invested Regularly for 5 Periods
                                  Market Trend
      --------------------------------------------------------------------

                  Down                     Up                    Mixed
           --------------------   ---------------------    --------------------
             Share     Shares       Share      Shares        Share     Shares
Investment   Price    Purchased     Price     Purchased      Price    Purchased
           --------------------   ---------------------    --------------------
   $100       10        10            6         16.67         10          10
    100        9        11.1          7         14.29          9          11.1
    100        8        12.5          7         14.29          8          12.5
    100        8        12.5          9         11.1           9          11.1
    100        6        16.67        10         10            10          10
   ----       --        -----        --         -----         --          -----
   $500    ***41        62.77     ***39         66.35      ***46          54.7

          *Avg. Cost:  $ 7.97    *Avg. Cost:   $ 7.54        *Avg. Cost: $ 9.14
                        -----                    -----                    -----
         **Avg. Price: $ 8.20    **Avg. Price: $ 7.80      **Avg. Price: $ 9.20
                        -----                    -----                    -----

  *  Average  Cost is the total  amount  invested  divided  by number of shares
     purchased.
 **  Average  Price  is  the  sum of the  prices  paid  divided  by  number  of
     purchases.
***  Cumulative total of share prices used to compute average prices.

                                      25
<PAGE>
                     [THIS PAGE LEFT BLANK INTENTIONALLY]

                                      26
<PAGE>
                     [THIS PAGE LEFT BLANK INTENTIONALLY]

                                      27
<PAGE>

28083-0599


© 2022 IncJournal is not affiliated with or endorsed by the U.S. Securities and Exchange Commission