SHORT TERM INVESTMENTS CO /TX/
497, 1995-12-13
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SHORT-TERM                               
INVESTMENTS CO.            
                           Prospectus                                           
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                             The Liquid Assets Portfolio (the "Portfolio") is a money market fund whose    
                           investment objective is to provide as high a level of current income as is      
LIQUID ASSETS              consistent with the preservation of capital and liquidity. The Portfolio seeks  
PORTFOLIO                  to achieve its objective by investing in high quality money market instruments  
                           such as U.S. Government obligations, bank obligations, commercial instruments   
CASH                       and repurchase agreements.                                                      
MANAGEMENT                                                                                                 
CLASS                        The Portfolio is a series portfolio of Short-Term Investments Co. (the        
                           "Fund"), an open-end diversified series management investment company. This     
DECEMBER 12, 1995          Prospectus relates solely to the Cash Management Class of the Portfolio, a      
                           class of shares designed to be a convenient and economical vehicle in which     
                           institutions can invest short-term cash reserves.                               
                                                                                                           
                             The Fund also offers shares of other classes of the Portfolio pursuant to     
                           separate prospectuses: the Institutional Class and the Private Investment       
                           Class, as well as shares of classes of another portfolio, the Prime Portfolio.  
                                                                                                           
                             THESE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE SECURITIES AND  
                           EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION NOR HAS THE SECURITIES   
                           AND EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION PASSED UPON THE      
                           ACCURACY OR ADEQUACY OF THIS PROSPECTUS. ANY REPRESENTATION TO THE CONTRARY IS  
                           A CRIMINAL OFFENSE.                                                             
                                                                                                           
                             THIS PROSPECTUS SETS FORTH BASIC INFORMATION THAT A PROSPECTIVE INVESTOR      
                           SHOULD KNOW BEFORE INVESTING IN SHARES OF THE CASH MANAGEMENT CLASS OF THE      
                           PORTFOLIO AND SHOULD BE READ AND RETAINED FOR FUTURE REFERENCE. A STATEMENT OF  
                           ADDITIONAL INFORMATION DATED DECEMBER 12, 1995, HAS BEEN FILED WITH THE UNITED  
                           STATES SECURITIES AND EXCHANGE COMMISSION AND IS HEREBY INCORPORATED BY         
                           REFERENCE. A COPY OF THE STATEMENT OF ADDITIONAL INFORMATION IS AVAILABLE       
                           WITHOUT CHARGE UPON WRITTEN REQUEST TO FUND MANAGEMENT COMPANY AT 11 GREENWAY   
                           PLAZA, SUITE 1919, HOUSTON, TEXAS 77046.                                        
                                                                                                           
                             THE PORTFOLIO'S SHARES ARE NOT DEPOSITS OR OBLIGATIONS OF, OR GUARANTEED OR   
                           ENDORSED BY, ANY BANK, AND THE PORTFOLIO'S SHARES ARE NOT FEDERALLY INSURED OR  
                           GUARANTEED BY THE U.S. GOVERNMENT, THE FEDERAL DEPOSIT INSURANCE CORPORATION,   
                           THE FEDERAL RESERVE BOARD OR ANY OTHER AGENCY. THERE CAN BE NO ASSURANCE THAT   
                           THE PORTFOLIO WILL BE ABLE TO MAINTAIN A STABLE NET ASSET VALUE OF $1.00 PER    
                           SHARE. SHARES OF THE PORTFOLIO INVOLVE INVESTMENT RISKS INCLUDING THE POSSIBLE  
[LOGO APPEARS HERE]        LOSS OF PRINCIPAL.                                                               
                       
Fund Management Company                                                          
11 Greenway Plaza                                                                
Suite 1919                                                                       
Houston, TX 77046-1173                                                           
(800) 877-7745                                                                   
                               
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                                    SUMMARY
 
THE PORTFOLIO AND ITS INVESTMENT OBJECTIVE
 
  The Fund is an open-end diversified series management investment company.
Pursuant to this Prospectus, the Fund offers shares of the Cash Management
Class (the "Class") of the Portfolio at net asset value. The Portfolio is a
money market fund which invests in money market instruments, such as U.S.
Government Agencies obligations, bank obligations, commercial instruments and
repurchase agreements. The investment objective of the Portfolio is to provide
as high a level of current income as is consistent with the preservation of
capital and liquidity.
 
  Pursuant to separate prospectuses, the Fund also offers shares of other
classes of common stock of the Fund representing interests in the Portfolio.
Such classes have different distribution arrangements designed for
institutional and other categories of investors. The Fund also offers shares of
classes of another portfolio, the Prime Portfolio, each pursuant to a separate
prospectus. Such classes have different distribution arrangements and are
designed for institutional and other categories of investors. The portfolios of
the Fund are referred to collectively as "Portfolios."
 
INVESTORS IN THE CLASS
 
  The Class is designed to be a convenient and economical vehicle in which
institutions, particularly banks, acting for themselves or in a fiduciary,
advisory, agency, custodial or other similar capacity, can invest short-term
cash reserves. Although shares of the Class may not be purchased by individuals
directly, institutions may purchase shares for accounts maintained for
individuals. See "Suitability for Investors."
 
PURCHASE OF SHARES
 
  Shares of the Class are sold at net asset value without a sales charge. The
minimum initial investment in the Class is $10,000,000. There is no minimum
amount for subsequent investments. Payment for shares of the Class purchased
must be in federal funds or other funds immediately available to the Portfolio.
See "Purchase of Shares."
 
REDEMPTION OF SHARES
 
  Redemptions may be made without charge at net asset value. Payment for
redeemed shares of the Class for which redemption orders have been received
prior to 4:00 p.m. Eastern Time will normally be made on the same day. See
"Redemption of Shares."
 
DIVIDENDS
 
  The net income of the Portfolio is declared as a dividend daily to
shareholders of record immediately after 4:00 p.m. Eastern Time. Dividends are
paid monthly by check or wire transfer unless the shareholder has previously
elected to have such dividends automatically reinvested in additional shares of
the Class. Information concerning the amount of the dividends declared on any
particular day will normally be available by 5:00 p.m. Eastern Time on that
day. See "Dividends."
 
CONSTANT NET ASSET VALUE
 
  The Portfolio uses the amortized cost method of valuing its portfolio
securities and rounds its per share net asset value to the nearest whole cent.
Accordingly, the Fund intends to maintain the net asset value per share of the
Portfolio at $1.00. AN INVESTMENT IN THE PORTFOLIO IS NOT INSURED OR GUARANTEED
BY THE U.S. GOVERNMENT, AND THERE IS NO ASSURANCE THAT THE PORTFOLIO WILL BE
ABLE TO MAINTAIN A STABLE NET ASSET VALUE OF $1.00 PER SHARE. See "Net Asset
Value."
 
INVESTMENT ADVISOR
 
  A I M Advisors, Inc. ("AIM") serves as the Portfolio's investment advisor and
receives a fee based on the Portfolio's average daily net assets. AIM is
primarily engaged in the business of acting as manager or advisor to investment
companies. Under an Administrative Services Agreement, AIM may be reimbursed by
the Fund for its costs of performing certain accounting and other
administrative services for the Fund. See "Management of the Fund--Investment
Advisor" and "--Administrator."
 
DISTRIBUTOR AND DISTRIBUTION PLAN
 
  Fund Management Company ("FMC") acts as the exclusive distributor of the
shares of the Class. Pursuant to the Distribution Plan, the Fund may pay up to
 .10% of the average daily net assets of the Portfolio attributable to the
shares of the
 
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Class to FMC as well as certain broker-dealers or other financial institutions
as compensation for distribution-related services. See "Purchase of Shares" and
"Management of the Fund--Distribution Plan."
 
SPECIAL CONSIDERATIONS
 
  The Portfolio may borrow money and enter into reverse repurchase agreements.
The Portfolio may invest in certificates of deposit and time deposits of
foreign branches of major domestic banks and in repurchase agreements. The
Portfolio may purchase delayed delivery or when-issued securities. Accordingly,
an investment in the Portfolio may entail somewhat different risks from an
investment in an investment company that does not engage in such practices.
There can be no assurance that the Portfolio will be able to maintain a stable
net asset value of $1.00 per share. See "Investment Program."
 
  The AIM Family of Funds, The AIM Family of Funds and Design (i.e., the AIM
logo), AIM and Design, AIM, AIM LINK and AIM Institutional Funds are registered
service marks of A I M Management Group Inc.
 
                           TABLE OF FEES AND EXPENSES
 
  The following table is designed to help an investor understand the various
costs and expenses that an investor in the Portfolio will bear directly or
indirectly.
 
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SHAREHOLDER TRANSACTION EXPENSES--CASH MANAGEMENT CLASS
 Maximum Sales Load Imposed on Purchases (as a percentage of offering
  price)................................................................. None
 Maximum Sales Load Imposed on Reinvested Dividends (as a percentage of
  offering price)........................................................ None
 Deferred Sales Load (as a percentage of original purchase price or re-
  demption proceeds, as applicable)...................................... None
 Redemption Fees (as a percentage of amount redeemed, if applicable)..... None
 Exchange Fee............................................................ None
ANNUAL PORTFOLIO OPERATING EXPENSES (AS A PERCENTAGE OF AVERAGE NET AS-
 SETS)--CASH MANAGEMENT CLASS*
 Management Fees (after waivers)......................................... 0.06%
 12b-1 Fees (after waivers)**............................................ 0.08%
 Other Expenses (estimated).............................................. 0.03%
                                                                          ----
 Total Portfolio Operating Expenses--Cash Management Class............... 0.17%
                                                                          ====
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 * The fees and expenses set forth in the table are based on estimated average
   net assets of the Class' first period of operation. Had there been no
   waivers, Management Fees and 12b-1 Fees would be 0.15% and 0.10%,
   respectively.
** As a result of 12b-1 fees, a long-term shareholder of the Class may pay more
   than the economic equivalent of the maximum front-end sales charges
   permitted by the Rules of the National Association of Securities Dealers,
   Inc.
 
EXAMPLE
 
  An investor would pay the following expenses on a $1,000 investment, assuming
(1) 5% annual return and (2) redemption at the end of each time period.
 
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      1 year........................................................... $ 2
      3 years.......................................................... $ 5
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  The Fee Table is designed to assist an investor in understanding the various
costs and expenses that an investor in the Class will bear directly or
indirectly. (For more complete descriptions of the various costs and expenses,
see "Management of the Fund" below.) The other expenses and 12b-1 fees figure
is based upon estimated costs and the estimated size of the Class and estimated
fees to be charged for the current fiscal year. Thus, actual expenses may be
greater or less than such estimates. There can be no assurance that future
waivers of fees (if any) will not vary from the figures reflected in the Table
of Fees and Expenses. To the extent any service providers assume expenses of
the Class, such assumption of expenses will have the effect of lowering the
Class' overall expense ratio and increasing its yield to investors. Beneficial
owners of shares of the Class should also consider the effect of any charges
imposed by the institution maintaining their accounts.
 
  The example in the Table of Fees and Expenses assumes that all dividends and
distributions are reinvested and that the amounts listed under "Annual
Portfolio Operating Expenses--Cash Management Class" remain the same in the
years shown.
 
  THE EXAMPLE SHOULD NOT BE CONSIDERED TO BE AN ACCURATE REPRESENTATION OF PAST
OR FUTURE PERFORMANCE AND ACTUAL EXPENSES MAY BE GREATER OR LESS THAN THOSE
SHOWN.
 
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                           SUITABILITY FOR INVESTORS
 
  The Class is intended for use primarily by institutions, particularly banks,
acting for themselves or in a fiduciary, advisory, agency, custodial or other
similar capacity. It is designed to be a convenient and economical vehicle in
which such institutions can invest short-term cash reserves. Shares of the
Class may not be purchased directly by individuals, although institutions may
purchase shares for accounts maintained by individuals. Prospective investors
should determine if an investment in the Class is consistent with the
objectives of an account and with applicable state and federal laws and
regulations.
 
  An investment in the Class may relieve the institution of many of the
investment and administrative burdens encountered when investing in money
market instruments directly. These include: selection of portfolio investments;
surveying the market for the best price at which to buy and sell securities;
valuation of portfolio securities; selection and scheduling of maturities of
portfolio securities; receipt, delivery and safekeeping of securities; and
portfolio recordkeeping. It is anticipated that most investors will perform
their own sub-accounting. To assist these institutions, information concerning
the dividends declared by the Portfolio on any particular day will normally be
available by 5:00 p.m. Eastern Time on that day. Sub-accounting services may be
arranged through the Fund for shareholders who prefer not to perform such
services.
 
                               INVESTMENT PROGRAM
 
  The investment objective of the Portfolio is deemed to be a matter of
fundamental policy that may not be changed without the approval of a majority
of the Portfolio's shares. The Board of Directors of the Fund reserves the
right to change any of the investment policies, strategies or practices of the
Portfolio, as described in this Prospectus and the Statement of Additional
Information without shareholder approval, except in those instances where
shareholder approval is expressly required.
 
INVESTMENT OBJECTIVE
 
  The investment objective of the Portfolio is to provide as high a level of
current income as is consistent with the preservation of capital and liquidity.
The Portfolio seeks to achieve its objective by investing in a diversified
portfolio of high quality U.S. dollar-denominated money market instruments and
other similar instruments with maturities of 397 days or less from the date of
purchase. The Portfolio will maintain a weighted average maturity of 90 days or
less.
 
INVESTMENT POLICIES
 
  The Portfolio may invest in a broad range of U.S. Government and foreign
government obligations, and bank and commercial instruments that may be
available in the money markets. Such obligations include U.S. Treasury
obligations and repurchase agreements. The Portfolio intends to invest in
bankers' acceptances, certificates of deposit, time deposits and commercial
paper, and U.S. Government direct obligations and U.S. Government agencies
securities. Certain U.S. Government obligations with floating or variable
interest rates may have longer maturities. Commercial obligations may include
both domestic and foreign issuers that are U.S. dollar-denominated. Bankers'
acceptances, certificates of deposit and time deposits may be purchased from
U.S. or foreign banks. These instruments, which are collectively referred to as
"Money Market Obligations," are briefly described below.
 
  The Portfolio will limit investments in Money Market Obligations to those
which are denominated in U.S. dollars and which at the date of purchase are
"First Tier" securities as defined in Rule 2a-7 under the Investment Company
Act of 1940 (the "1940 Act"), as such Rule may be amended from time to time.
Generally, "First Tier" securities are securities that are rated in the highest
rating category by two nationally recognized statistical rating organizations
("NRSROs"), or, if only rated by one NRSRO, are rated in the highest rating
category by that NRSRO, or, if unrated, are determined by AIM (under the
supervision of and pursuant to guidelines established by the Fund's Board of
Directors) to be of comparable quality to a rated security that meets the
foregoing quality standards.
 
  The Portfolio will not invest more than 10% of its net assets in illiquid
securities.
 
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  In managing the Portfolio's investments, AIM may indicate to dealers or
issuers its interest in acquiring certain securities for the Portfolio for
settlement beyond a customary settlement date thereafter. In some cases, the
Portfolio may agree to purchase such securities at stated prices and yields.
(In such cases, these securities are considered "delayed delivery" securities
when traded in the secondary market or "when-issued" securities if they are an
initial issuance of securities.) Since this is done to facilitate the
acquisition of portfolio securities and is not for the purpose of investment
leverage, the amount of delayed delivery or when-issued securities involved may
not exceed the estimated amount of funds available for investment on the
settlement date. Until the settlement date, assets of the Portfolio with a
dollar value sufficient at all times to make payment for the delayed delivery
or when-issued securities will be set aside in a segregated account. (The total
amount of assets in the segregated account may not exceed 25% of the
Portfolio's total assets.) The delayed delivery securities, which will not
begin to accrue interest until the settlement date, and the when-issued
securities will be recorded as an asset of the Portfolio and will be subject to
the risks of market value fluctuations. The purchase price of the delayed
delivery or when-issued securities will be recorded as a liability of the
Portfolio until settlement. AIM may also transact sales of securities on a
"forward commitment" basis. In such a transaction, AIM agrees to sell portfolio
securities at a future date at specified prices and yields. Securities subject
to sale on a forward commitment basis will continue to accrue interest until
sold and will be subject to the risks of market value fluctuations. Absent
extraordinary circumstances, the Portfolio's right to acquire delayed delivery
and when-issued securities or its obligation to sell securities on a forward-
commitment basis will not be divested prior to the settlement date.
 
  The Portfolio may invest up to 100% of its total assets in obligations issued
by banks. While the Portfolio will limit its investments in bank instruments to
U.S.dollar-denominated obligations, it may invest in Eurodollar obligations
(i.e., U.S. dollar-denominated obligations issued by a foreign branch of a
domestic bank), Yankee dollar obligations (i.e., U.S. dollar-denominated
obligations issued by a domestic branch of a foreign bank) and obligations of
foreign branches of foreign banks, including time deposits. The Portfolio will
limit its aggregate investments in foreign bank obligations, including
Eurodollar obligations and Yankee dollar obligations, to 25% of its total
assets at the time of purchase, provided that there is no limitation upon the
Portfolio's investments in (a) Eurodollar obligations, if the domestic parent
of the foreign branch issuing the obligation is unconditionally liable in the
event that the foreign branch for any reason fails to pay on the Eurodollar
obligation; and (b) Yankee dollar obligations, if the U.S. branch of the
foreign bank is subject to the same regulation as U.S. banks.
 
  The Portfolio may invest in certificates of deposit ("Eurodollar CDs") and
time deposits ("Eurodollar time deposits") of foreign branches of domestic
banks having total assets of $5 billion as of the date of their most recently
published financial statements. Accordingly, an investment in the Portfolio may
involve risks that are different in some respects from those incurred by an
investment company which invests only in debt obligations of U.S. domestic
issuers. Such risks include future political and economic developments, the
possible seizure or nationalization of foreign deposits, the possible
imposition of foreign country withholding taxes on interest income payable on
Eurodollar CDs or Eurodollar time deposits, and the possible establishment of
exchange controls or the adoption of other foreign governmental restrictions
which might adversely affect the payment of principal and interest on
Eurodollar CDs and Eurodollar time deposits.
 
  The Portfolio may also lend its portfolio securities in amounts up to 33 1/3%
of its total assets to financial institutions in accordance with the investment
restrictions of the Portfolio. Such loans would involve risks of delay in
receiving additional collateral in the event the value of the collateral
decreased below the value of the securities loaned or of delay in recovering
the securities loaned or even loss of rights in the collateral should the
borrower of the securities fail financially. However, loans will be made only
to borrowers deemed by AIM to be of good standing and only when, in AIM's
judgment, the income to be earned from the loans justifies the attendant risks.
 
DESCRIPTION OF MONEY MARKET OBLIGATIONS
 
  The following list does not purport to be an exhaustive list of all Money
Market Obligations, and the Portfolio reserves the right to invest in Money
Market Obligations other than those listed below:
 
  U.S. GOVERNMENT DIRECT OBLIGATIONS--These are bills, notes, and bonds issued
by the U.S. Treasury.
 
  U.S. GOVERNMENT AGENCIES SECURITIES--Certain federal agencies (such as the
Federal National Mortgage Association, the Small Business Administration and
the Resolution Trust Corporation) have been established as instrumentalities of
the U.S. Government to supervise and finance certain types of activities.
Issues of these agencies, while not direct obligations of the U.S.
 
                                       5
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Government, are (a) backed by the full faith and credit of the United States,
(b) guaranteed by the U.S. Treasury or (c) supported by the issuing agencies'
right to borrow from the U.S. Treasury.
 
  FOREIGN GOVERNMENT OBLIGATIONS--These are U.S. dollar-denominated obligations
issued or guaranteed by one or more foreign governments or any of their
political subdivisions, agencies or instrumentalities that are determined by
AIM to be of comparable quality to the other obligations in which the Portfolio
may invest. These obligations are often, but not always, supported by the full
faith and credit of the foreign governments, or their subdivisions, agencies or
instrumentalities, that issue them. Such securities also include debt
obligations of supranational entities. Such debt obligations are ordinarily
backed by the full faith and credit of the entities that issue them.
Supranational entities include international organizations designated or
supported by governmental entities to promote economic reconstruction or
development and international banking institutions and related government
agencies. Examples of supranational entities include the International Bank for
Reconstruction and Development (the World Bank), the European Coal and Steel
Community, the Asian Development Bank and the InterAmerican Development Bank.
The percentage of the Portfolio's assets invested in securities issued by
foreign governments will vary depending on the relative yields of such
securities, the economic and financial markets of the countries in which the
investments are made and the interest rate climate of such countries.
 
  BANKERS' ACCEPTANCES--A bankers' acceptance is a bill of exchange or time
draft drawn on and accepted by a commercial bank. Bankers' acceptances are used
by corporations to finance the shipment and storage of goods and to furnish
dollar exchange. These instruments generally mature in six months or less.
 
  CERTIFICATES OF DEPOSIT--A certificate of deposit is a negotiable interest-
bearing instrument with a specific maturity. Certificates of deposit are issued
by banks and savings and loan institutions in exchange for the deposit of
funds, and normally can be traded in the secondary market prior to maturity.
 
  TIME DEPOSITS--A time deposit is a non-negotiable receipt issued by a bank in
exchange for the deposit of funds. Like a certificate of deposit, it earns a
specified rate of interest over a definite period of time; however, it cannot
be traded in the secondary market.
 
  EURODOLLAR OBLIGATIONS--A Eurodollar obligation is a U.S. dollar-denominated
obligation issued by a foreign branch of a domestic bank.
 
  YANKEE DOLLAR OBLIGATIONS--A Yankee dollar obligation is a U.S. dollar-
denominated obligation issued by a domestic branch of a foreign bank.
 
  SHORT AND MEDIUM TERM NOTES--Short and medium term notes are obligations that
have fixed coupons and maturities that can be targeted to meet investor
requirements. They are issued in the capital markets either publicly under a
shelf registration pursuant to Rule 415 promulgated by the United States
Securities and Exchange Commission (the "SEC"), or privately without such a
registration.
 
  COMMERCIAL PAPER--Commercial paper is a term used to designate unsecured
short-term promissory notes issued by corporations and other entities.
Maturities on these issues vary from a few days to nine months.
 
  MASTER NOTES--Master notes are unsecured demand notes that permit investment
of fluctuating amounts of money at varying rates of interest pursuant to
arrangements with issuers who meet the quality criteria of the Portfolio. The
interest rate on a master note may (a) fluctuate based upon changes in
specified interest rates, (b) be reset periodically according to a prescribed
formula or (c) be a set rate. Although there is no secondary market in master
notes, if such notes have a demand feature, the payee may demand payment of the
principal amount of the note on relatively short notice.
 
  REPURCHASE AGREEMENTS--A repurchase agreement is an instrument under which
the Portfolio acquires ownership of a debt security and the seller agrees, at
the time of the sale, to repurchase the obligation at a mutually agreed-upon
time and price, thereby determining the yield during the Portfolio's holding
period. Repurchase transactions are limited to a term not to exceed 365 days.
The Portfolio may enter into repurchase agreements only with institutions
believed by the Fund's Board of Directors to present minimal credit risk. With
regard to repurchase transactions, in the event of a bankruptcy or other
default
 
                                       6
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of a seller of a repurchase agreement (such as the seller's failure to
repurchase the obligation in accordance with the terms of the agreement), the
Portfolio could experience both delays in liquidating the underlying securities
and losses, including: (a) a possible decline in the value of the underlying
security during the period while the Portfolio seeks to enforce its rights
thereto, (b) possible subnormal levels of income and lack of access to income
during this period, and (c) expenses of enforcing its rights. Repurchase
agreements are considered to be loans by the Portfolio under the 1940 Act.
Repurchase agreements will be secured by U.S. Treasury securities, U.S.
Government agency securities (including, but not limited to, those which have
been stripped of their interest payments and mortgage-backed securities) and
commercial paper. For additional information on the use of repurchase
agreements, see the Statement of Additional Information.
 
  BORROWING MONEY/REVERSE REPURCHASE AGREEMENTS--Reverse repurchase agreements
involve the sale by the Portfolio of a portfolio security at an agreed-upon
price, date and interest payment. The Portfolio will borrow money or enter into
reverse repurchase agreements solely for temporary or defensive purposes to
facilitate the orderly sale of portfolio securities to accommodate abnormally
heavy redemption requests should they occur. Reverse repurchase transactions
are limited to a term not to exceed 92 days. The Portfolio will use reverse
repurchase agreements when the interest income to be earned from the securities
that would otherwise have to be liquidated to meet redemption requests is
greater than the interest expense of the reverse repurchase transaction. The
Portfolio may enter into reverse repurchase agreements in amounts not exceeding
10% of the value of its total assets. Reverse repurchase agreements involve the
risk that the market value of securities retained by the Portfolio in lieu of
liquidation may decline below the repurchase price of the securities sold by
the Portfolio which it is obligated to repurchase. The risk, if encountered,
could cause a reduction in the net asset value of the Portfolio's shares.
Reverse repurchase agreements are considered to be borrowings under the 1940
Act.
 
INVESTMENT RESTRICTIONS
 
  The Portfolio's investment program is subject to a number of investment
restrictions which reflect self-imposed standards as well as federal and state
regulatory limitations. These restrictions are designed to minimize certain
risks associated with investing in specified types of securities or engaging in
certain transactions and to limit the amount of the Portfolio's assets which
may be concentrated in any specific industry or issuer. The most significant of
these restrictions provide that the Portfolio will not:
 
    1) concentrate 25% or more of the value of its total assets in the
  securities of one or more issuers conducting their principal business
  activities in the same industry, provided that there is no limitation with
  respect to investments in obligations issued or guaranteed by the U.S.
  Government, its agencies or instrumentalities and bank instruments such as
  CDs, bankers' acceptances, time deposits and bank repurchase agreements;
 
    2) purchase securities of any one issuer (other than obligations of the
  U.S. Government, its agencies or instrumentalities) if, immediately after
  such purchase, more than 5% of the value of the Portfolio's total assets
  would be invested in such issuer, except as permitted by Rule 2a-7 under the
  1940 Act, as amended from time to time; or
 
    3) borrow money or issue senior securities except (a) for temporary or
  emergency purposes (e.g., in order to facilitate the orderly sale of
  portfolio securities or to accommodate abnormally heavy redemption
  requests), the Portfolio may borrow money from banks or obtain funds by
  entering into reverse repurchase agreements, and (b) to the extent that
  entering into commitments to purchase securities in accordance with the
  Portfolio's investment program may be considered the issuance of senior
  securities. The Portfolio will not purchase portfolio securities while
  borrowings in an amount in excess of 5% of its total assets are outstanding.
 
  The Portfolio's investment objective and the three investment restrictions
set forth above (as well as certain others set forth in the Statement of
Additional Information) are matters of fundamental policy which may not be
changed without the affirmative vote of a majority of the outstanding shares of
the Portfolio.
 
  In addition to the restrictions described herein, the Portfolio must also
comply with the requirements of Rule 2a-7 under the 1940 Act, which govern the
operations of money market funds, and which may be more restrictive than the
policies described herein.
 
                                       7
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  The SEC has proposed certain changes to Rule 2a-7. While such proposed
changes may have a prospective impact on the investments of the Portfolio, the
Portfolio anticipates no difficulty in complying with any proposed change if
adopted by the SEC. A description of further investment restrictions applicable
to the Portfolio is contained in the Statement of Additional Information.
 
                               PURCHASE OF SHARES
 
  Shares of the Class are sold on a continuing basis at their net asset value
next determined after an order has been received by the Portfolio. As discussed
below, the Fund reserves the right to reject any purchase order. Although there
is no sales charge imposed on the purchase of shares of the Class, banks and
other institutions may charge a recordkeeping, account maintenance or other fee
to their customers. Beneficial holders of shares of the Class should consult
with the institutions maintaining their accounts to obtain a schedule of
applicable fees. To facilitate the investment of proceeds of purchase orders,
investors are urged to place their orders as early in the day as possible.
Purchase orders will be accepted for execution on the day the order is placed,
provided that the order is properly submitted and received by the Portfolio
prior to 4:00 p.m. Eastern Time on a business day of the Portfolio. Purchase
orders received after such time will be processed at the next day's net asset
value. Shares of the Class will earn the dividend declared on the effective
date of purchase.
 
  A "business day of the Portfolio" is any day on which both the Federal
Reserve Bank of New York and The Bank of New York, the Portfolio's custodian,
are open for business. It is expected that the Federal Reserve Bank of New York
and The Bank of New York will be closed during the next twelve months on
Saturdays and Sundays and on observed holidays of New Year's Day, Martin Luther
King, Jr.'s Birthday, Presidents' Day, Memorial Day, Independence Day, Labor
Day, Columbus Day, Veterans' Day, Thanksgiving Day and Christmas Day.
 
  Subject to the conditions stated above and the Portfolio's right to reject
any purchase order, orders will be accepted (a) when payment for the shares of
the Class purchased is received by The Bank of New York, the Portfolio's
custodian bank, in the form described below and notice of such order is
provided to the Portfolio's transfer agent or (b) at the time the order is
placed, if the Portfolio is assured of payment.
 
  Payment for shares of the Portfolio purchased must be in the form of federal
funds or other funds immediately available to the Portfolio. Federal Reserve
wires should be sent as early as possible in order to facilitate crediting to
the shareholder's account. Any funds received with respect to an order which is
not accepted by the Portfolio and any funds received for which an order has not
been received will be returned to the sending institution. An order to purchase
shares of the Class must specify that the "Cash Management Class of the Liquid
Assets Portfolio" is being purchased; otherwise, any funds received will be
returned to the sending institution.
 
  The minimum initial investment in the Class is $10,000,000. Institutions may
be requested to maintain separate master accounts in the shares of the Class
held by the institution (a) for its own account, for the account of other
institutions and for accounts for which the institution acts as a fiduciary,
and (b) for accounts for which the institution acts in some other capacity. An
institution's master account(s) and sub-accounts with the Class may be
aggregated for the purpose of the minimum investment requirement. No minimum
amount is required for subsequent investments in the Portfolio nor are minimum
balances required. Prior to the initial purchase of shares of the Class, an
Account Application must be completed and sent to A I M Institutional Fund
Services, Inc. ("Transfer Agent" or "AIFS") at 11 Greenway Plaza, Suite 1919,
Houston, Texas 77046-1173. Account Applications may be obtained from AIFS. Any
changes made to the information provided in the Account Application must be
made in writing or by completing a new form and providing it to AIFS.
 
  Banks will be required to certify to the Fund that they comply with
applicable state law regarding registration as broker-dealers, or that they are
exempt from such registration.
 
  In the interest of economy and convenience, certificates representing shares
of the Class will not be issued except upon written request to the Fund.
Certificates (in full shares only) will be issued without charge and may be
redeposited at any time.
 
  The Fund reserves the right in its sole discretion to withdraw all or any
part of the offering made by this Prospectus or to reject any purchase order.
 
                                       8
<PAGE>
 
 
                              REDEMPTION OF SHARES
 
  A shareholder may redeem any or all of its shares of the Class at the net
asset value next determined after receipt of the redemption request in proper
form by the Portfolio. Redemption requests with respect to the Class may also
be made via AIM LINK(R), a personal computer application software product.
Normally, the Fund intends to maintain the net asset value per share of the
Portfolio at $1.00 per share. See "Net Asset Value." Redemption requests with
respect to shares of the Class for which certificates have not been issued are
normally made by calling the Fund.
 
  Payment for redeemed shares of the Class is normally made by Federal Reserve
wire to the commercial bank account designated in the shareholder's Account
Application, but may be remitted by check upon request by a shareholder. If a
redemption request is received by AIFS prior to 4:00 p.m. Eastern Time on a
business day of the Portfolio, the redemption will be effected at the net asset
value next determined on such day and the shares of the Portfolio to be
redeemed will not receive the dividend declared on the effective date of the
redemption. If a redemption request is received by AIFS after 4:00 p.m. Eastern
Time or on other than a business day of the Portfolio, the redemption will be
effected at the net asset value of the Portfolio determined as of 4:00 p.m.
Eastern Time on the next business day of the Portfolio, and the proceeds of
such redemption will normally be wired on the effective day of the redemption.
 
  A shareholder may change the bank account designated to receive redemption
proceeds by written notice to the Portfolio. The authorized signature on the
notice must be guaranteed by a commercial bank or a trust company. Additional
documentation may be required when deemed appropriate by the Fund or the
Transfer Agent.
 
  Shareholders may request a redemption by telephone. The Transfer Agent and
FMC will not be liable for any loss, expense or cost arising out of any
telephone redemption request effected in accordance with the authorization set
forth in the account application if they reasonably believe such request to be
genuine, but may in certain cases be liable for losses due to unauthorized or
fraudulent transactions. Procedures for verification of telephone transactions
may include recordings of telephone transactions (maintained for six months),
and mailings of confirmation promptly after the transaction.
 
  Payment for shares of the Class redeemed by mail and payment for telephone
redemptions in amounts under $1,000 will be made by check mailed within seven
days after receipt of the redemption request in proper form. The Portfolio may
make payment for telephone redemptions in excess of $1,000 by check when it is
considered to be in the Portfolio's best interest to do so.
 
  The shares of the Class are not redeemable at the option of the Fund unless
the Board of Directors of the Fund determines in its sole discretion that
failure to so redeem may have materially adverse consequences to the
shareholders of the Fund.
 
                                   DIVIDENDS
 
  Dividends from the net income of the Portfolio are declared daily to
shareholders of record of the Class immediately after 4:00 p.m. Eastern Time on
the day of declaration. Net income for dividend purposes is determined daily as
of 4:00 p.m. Eastern Time. Net income of the Portfolio consists of interest
accrued and discount earned (including both original issue and market discount)
on securities held by the Portfolio, less amortization of market premium and
the accrued expenses of the Portfolio. Although realized gains and losses on
the assets of the Portfolio are reflected in the net asset value of the
Portfolio, they are not expected to be of an amount which would affect the
Portfolio's net asset value of $1.00 per share for purposes of purchases and
redemptions. See "Net Asset Value." Distributions from net realized short-term
gains may be declared and paid yearly or more frequently. See "Taxes." The
Portfolio does not expect to realize any long-term capital gains or losses.
 
  All dividends declared during a month will normally be paid by wire transfer.
Payment will normally be made on the first business day of the following month.
A shareholder may elect to have all dividends automatically reinvested in
additional full and fractional shares of the Portfolio at the net asset value
of such shares as of 4:00 p.m. Eastern Time on the last business day of the
month. Such election, or any revocation thereof, must be made in writing by the
shareholder to AIFS at 11 Greenway Plaza, Suite 1919, Houston, Texas 77046-1173
and will become effective with dividends paid after its receipt by AIFS. If a
shareholder redeems all the shares in its account at any time during the month,
all dividends declared through the date of redemption are paid to the
shareholder along with the proceeds of the redemption.
 
                                       9
<PAGE>
 
 
  The Portfolio uses its best efforts to maintain the net asset value per share
of the Portfolio at $1.00 for purposes of sales and redemptions. See "Net Asset
Value." Should the Fund incur or anticipate any unusual expense, loss or
depreciation which could adversely affect the income or net asset value of the
Portfolio, the Fund's Board of Directors would at that time consider whether to
adhere to the present dividend policy described above or to revise it in light
of the then prevailing circumstances. For example, under such unusual
circumstances the Board of Directors might reduce or suspend the daily dividend
in order to prevent to the extent possible the net asset value per share of the
Portfolio from being reduced below $1.00. Thus, such expenses, losses or
depreciation may result in a shareholder receiving no dividends for the period
during which it held its shares of the Class and cause such a shareholder to
receive upon redemption a price per share lower than the shareholder's original
cost.
 
                                     TAXES
 
  The Portfolio's policy is to distribute to its shareholders at least 90% of
its investment company taxable income for each year and consistent therewith to
meet the distribution requirements of Part I of Subchapter M of the Internal
Revenue Code of 1986, as amended (the "Code"). The Portfolio also intends to
meet the distribution requirements imposed by the Code in order to avoid the
imposition of a 4% excise tax. The Portfolio intends to distribute at least 98%
of its net investment income for the calendar year and at least 98% of its net
realized capital gains, if any, for the period ending on October 31. The
Portfolio also intends to meet the other requirements of Subchapter M,
including the requirements with respect to diversification of assets and
sources of income so that the Portfolio will pay no taxes on net investment
income and net realized capital gains paid to shareholders.
 
  Dividends paid by the Portfolio are subject to taxation as of the date of
payment, whether received by shareholders in cash or in additional shares of
the Portfolio. The Code provides an exception to this general rule: if the
Portfolio declares a dividend in October, November or December to shareholders
of record in such months and pays the dividend before February 1 of the next
year, a shareholder will be treated for tax purposes as having received the
dividend in the year in which it is declared rather than in January when it is
paid. It is anticipated that no portion of distributions will be eligible for
the dividends received deduction for corporations. Dividends paid by the
Portfolio from its net investment income and short-term capital gains are
taxable to shareholders at ordinary income tax rates.
 
  For purposes of determining taxable income, distribution requirements and
other requirements of Subchapter M, the Portfolio will be treated as a separate
corporation. Therefore, one portfolio of the Fund may not offset its gains
against the other portfolio's losses and each portfolio must specifically
comply with all the provisions of the Code.
 
  Distributions and transactions referred to in the preceding paragraphs may be
subject to state, local or foreign taxes, and the treatment thereof may differ
from the federal income tax consequences discussed herein. Shareholders are
advised to consult with their own tax advisers concerning the application of
state, local or foreign taxes.
 
  The foregoing discussion of federal income tax consequences is only a summary
based on tax laws and regulations in effect on November 1, 1995 which are
subject to change by legislation or administrative action.
 
                                NET ASSET VALUE
 
  The net asset value per share of the Portfolio is determined daily as of 4:00
p.m. Eastern Time on each business day of the Portfolio. Net asset value per
share is determined by dividing the value of the Portfolio's securities, cash
and other assets (including interest accrued but not collected), less all its
liabilities (including accrued expenses and dividends payable), by the number
of shares outstanding of the Portfolio and rounding the resulting per share net
asset value to the nearest one cent.
 
  The securities of the Portfolio are valued on the basis of amortized cost.
This method values a security at its cost on the date of purchase and
thereafter assumes a constant amortization to maturity of any discount or
premium, regardless of the impact of fluctuating interest rates on the market
value of the security. While this method provides certainty in valuation, it
may result in periods during which value, as determined by amortized cost, is
higher or lower than the price the Portfolio would receive if the security were
sold. During such periods, the daily yield on shares of the Portfolio, computed
as described in "Purchases and Redemptions--Performance Information" in the
Statement of Additional Information, may differ somewhat from an identical
computation made by an investment company with identical investments utilizing
available indications as to market value to value its portfolio securities.
 
                                       10
<PAGE>
 
 
                               YIELD INFORMATION
 
  Yield information for the Class can be obtained by calling FMC at (800) 877-
7745. Yields will fluctuate from time to time and are not necessarily
indicative of future results. Accordingly, the yield information may not
provide a basis for comparison with investments which pay a fixed rate of
interest for a stated period of time. Yield is a function of the type and
quality of the Portfolio's investments, the Portfolio's maturity and the
operating expense ratio of the Portfolio. A SHAREHOLDER'S INVESTMENT IN THE
PORTFOLIO IS NOT INSURED OR GUARANTEED BY THE U.S. GOVERNMENT OR BY ANY
INSTITUTION. These factors should be carefully considered by the investor
before making an investment in the Portfolio.
 
  To assist banks and other institutions performing their own sub-accounting,
same day information as to the daily dividend per share for the Class to eight
decimal places and current yield normally will be available by 5:00 p.m.
Eastern Time.
 
  From time to time and in its discretion, AIM may waive all or a portion of
its advisory fees and/or assume certain expenses of the Portfolio. Such a
practice will have the effect of increasing the Portfolio's yield and total
return.
 
                            REPORTS TO SHAREHOLDERS
 
  The Fund furnishes shareholders with semi-annual reports containing
information about the Portfolio and its operations, including a list of the
investments held in the Portfolio and financial statements. The annual
financial statements are audited by the Fund's independent auditors. A copy of
a current list of the investments held in the Portfolio will be sent to
shareholders upon request.
 
  Each shareholder will be provided with a written confirmation for each
transaction. Institutions establishing sub-accounts will receive a written
confirmation for each transaction in a sub-account. Duplicate confirmations may
be transmitted to the beneficial owner of the sub-account if requested by the
institution. The institution will receive a monthly statement setting forth,
for each sub-account, the share balance, income earned for the month, income
earned for the year to date and the total current value of the account.
 
                             MANAGEMENT OF THE FUND
 
BOARD OF DIRECTORS
 
  The overall management of the business and affairs of the Fund is vested with
the Board of Directors. The Board of Directors approves all significant
agreements between the Fund and persons or companies furnishing services to the
Fund, including agreements with the Portfolio's investment advisor,
distributor, custodian and transfer agent. The day-to-day operations of the
Fund are delegated to the Fund's officers and to AIM, subject always to the
objective and policies of the Portfolio and to the general supervision of the
Fund's Board of Directors. Certain directors and officers of the Fund are
affiliated with AIM and A I M Management Group Inc. ("AIM Management"), a
holding company engaged in the financial services business. Information
concerning the Board of Directors may be found in the Statement of Additional
Information.
 
INVESTMENT ADVISOR
 
  A I M Advisors, Inc., 11 Greenway Plaza, Suite 1919, Houston, Texas 77046-
1173, acts as the Portfolio's investment advisor pursuant to a Master
Investment Advisory Agreement dated as of October 18, 1993 (the "Advisory
Agreement"). AIM was organized in 1976 and, together with its affiliates,
manages, advises or administers 37 investment company portfolios. As of October
31, 1995, the total assets of such investment company portfolios were
approximately $39.3 billion. AIM is a wholly-owned subsidiary of AIM
Management.
 
  Pursuant to the terms of the Advisory Agreement, AIM manages the investment
of the Portfolio's assets and obtains and evaluates economic, statistical and
financial information to formulate and implement investment policies for the
Portfolio. The Advisory Agreement also provides that, upon the request of the
Fund's Board of Directors, AIM may perform (or arrange for the performance of)
certain accounting, shareholder servicing and other administrative services for
the Fund which are not required to be performed by AIM under the Advisory
Agreement. The Advisory Agreement requires AIM to reduce its fee to the extent
required to satisfy any expense limitations imposed by the securities laws or
regulations thereunder of any state in which the Portfolio's shares are
qualified for sale.
 
                                       11
<PAGE>
 
 
  For the fiscal year ended August 31, 1995, AIM received fees with respect to
the Portfolio which represented 0.08% of the Portfolio's average daily net
assets.
 
ADMINISTRATOR
 
  The Fund has entered into a Master Administrative Services Agreement dated as
of October 18, 1993 with AIM (the "Administrative Services Agreement"),
pursuant to which AIM is entitled to receive from the Fund reimbursement of its
costs or such reasonable compensation as may be approved by the Fund's Board of
Directors for providing specified administrative services. Currently, AIM is
reimbursed for the services of the Fund's principal financial officer and his
staff, and any expenses related to such services, as well as the services of
staff responding to various shareholder inquiries.
 
  In addition, AIM and AIFS have entered into an Administrative Services
Agreement pursuant to which AIFS was reimbursed by AIM for its costs in
providing shareholder services for the Fund. AIFS or its affiliates received
reimbursement of shareholder services costs of $38,870 with respect to the
Portfolio for the period August 31, 1994 through June 30, 1995 which
represented 0.002% of the Portfolio's average daily net assets. The
Administrative Services Agreement between AIM and AIFS was terminated July 1,
1995. Beginning July 1, 1995, AIFS received fees with respect to the Portfolio
for its provision of shareholder services pursuant to a Transfer Agency and
Service Agreement with the Fund. For the period July 1, 1995 through August 31,
1995, AIFS received transfer agency fees from AIM with respect to the Portfolio
in the amount of $9,045.
 
FEE WAIVERS
 
  AIM may in its discretion from time to time agree to waive voluntarily all or
any portion of its advisory fee and/or assume certain expenses of the Portfolio
but will retain its ability to be reimbursed prior to the end of the fiscal
year. FMC may in its discretion from time to time agree to waive voluntarily
its 12b-1 fee but will retain its ability to be reimbursed prior to the end of
the fiscal year.
 
DISTRIBUTOR
 
  The Fund has entered into a Master Distribution Agreement dated as of October
18, 1993 (the "Distribution Agreement") with FMC, a registered broker-dealer
and a wholly-owned subsidiary of AIM, to act as the exclusive distributor of
the shares of the Class. The address of FMC is 11 Greenway Plaza, Suite 1919,
Houston, Texas 77046-1173. Certain directors and officers of the Fund are
affiliated with FMC and AIM Management. The Distribution Agreement provides
that FMC has the exclusive right to distribute shares of the Portfolio either
directly or through other broker-dealers, and receives no fees for its services
with respect to the Portfolio pursuant to the Distribution Agreement. FMC is
the distributor of several other mutual funds managed or advised by AIM.
 
  FMC may, from time to time, at its expense, pay a bonus or other
consideration or incentive to dealers or banks who sell a minimum dollar amount
of shares of the Class during a specific period of time. In some instances,
these incentives may be offered only to certain dealers or Institutions who
have sold or may sell significant amounts of shares. The total amount of such
additional bonus payments or other consideration shall not exceed .05% of the
net asset value of the shares of the Class sold. Any such bonus or incentive
programs will not change the price paid by investors for the purchase of shares
of the Class or the amount received as proceeds from such sales. Sales of
shares of the Class may not be used to qualify for any incentives to the extent
that such incentives may be prohibited by the laws of any jurisdiction.
 
DISTRIBUTION PLAN
 
  The Fund has adopted a Master Distribution Plan (the "Plan") pursuant to Rule
12b-1 under the 1940 Act. The Plan provides that the Fund may compensate FMC in
connection with the distribution of the shares of the Class in an amount equal
to 0.10% on an annualized basis of the average daily net assets of the
Portfolio attributable to the Class. Such amounts may be expended when and if
authorized by the Board of Directors of the Fund and may be used to finance
such distribution-related services as expenses of organizing and conducting
sales seminars, printing of prospectuses and statements of additional
information (and supplements thereto) and reports for other than existing
shareholders, preparation and distribution of advertising material and sales
literature and costs of administering the Plan.
 
                                       12
<PAGE>
 
 
  Of the compensation paid to FMC under the Plan, a service fee may be paid to
dealers and other financial institutions that provide continuing personal
shareholder services to their customers who purchase and own shares of the
Class. Payments to dealers and other financial institutions in excess of 0.25%
of the average daily net assets of the Portfolio attributable to the Class
which are attributable to the customers of such dealers or financial
institutions and payments retained by FMC would be characterized as an asset-
based sales charge pursuant to the Plan. The Plan also imposes a cap on the
total amount of sales charges, including asset-based sales charges, that may be
paid by the Portfolio with respect to the Class. The Plan does not obligate the
Fund to reimburse FMC for the actual expenses FMC may incur in fulfilling its
obligations under the Plan on behalf of the Class. Thus, under the Plan, even
if FMC's actual expenses exceed the fee payable to FMC thereunder at any given
time, the Fund will not be obligated to pay more than that fee. If FMC's
expenses are less than the fee it receives, FMC will retain the full amount of
the fee.
 
  As required by Rule 12b-1 under the 1940 Act, the Plan was approved by the
Board of Directors, including a majority of the directors who are not
"interested persons" (as defined in the 1940 Act) of the Fund and who have no
direct or indirect financial interest in the operation of the Plan or in any
agreements related to the Plan ("Qualified Directors") on December 5, 1995. In
approving the Plan, the directors considered various factors and determined
that there is a reasonable likelihood that the Plan will benefit the Fund and
the shareholders of the Class.
 
  The Plan requires the officers of the Fund to provide the Board of Directors
at least quarterly with a written report of the amounts expended pursuant to
the Plan and the purposes for which such expenditures were made. The Board of
Directors shall review these reports in connection with their decisions with
respect to the Plan.
 
  The Plan may be terminated by a vote of a majority of the Qualified
Directors, or by a vote of a majority of the holders of the outstanding voting
securities of the Class. Any change in the Plan that would increase materially
the distribution expenses paid by the Class requires shareholder approval;
otherwise the Plan may be amended by the Board of Directors, including a
majority of the Qualified Directors, by votes cast in person at a meeting
called for the purpose of voting upon such amendment. As long as the Plan is in
effect, the selection or nomination of the Qualified Directors is committed to
the discretion of the Qualified Directors.
 
EXPENSES
 
  Expenses of the Fund which are not directly attributable to the operations of
either of the Portfolios are prorated among all classes of both Portfolios of
the Fund. Expenses of the Fund which are not directly attributable to a
specific class of shares but are directly attributable to one or both of the
Portfolios are prorated among all classes of such Portfolios. Expenses of the
Fund which are directly attributable to a specific class of shares are charged
against the income available for distribution as dividends to the holders of
such shares.
 
PORTFOLIO TRANSACTIONS AND BROKERAGE
 
  AIM is responsible for decisions to buy and sell securities for the
Portfolio, broker-dealer selection and negotiation of commission rates. Since
purchases and sales of portfolio securities by the Portfolio are usually
principal transactions, the Portfolio incurs little or no brokerage
commissions. Portfolio securities are normally purchased directly from the
issuer or from a market maker for the securities. The purchase price paid to
dealers serving as market makers may include a spread between the bid and asked
prices. The Portfolio may also purchase securities from underwriters at prices
which include a concession paid by the issuer to the underwriter.
 
  AIM's primary consideration in effecting a security transaction is to obtain
the best net price and the most favorable execution of the order. To the extent
that the executions and prices offered by more than one dealer are comparable,
AIM may, in its discretion, effect transactions with dealers that furnish
statistical, research or other information or services which are deemed by AIM
to be beneficial to the Portfolio's investment program. Certain research
services furnished by dealers may be useful to AIM with respect to clients
other than the Portfolio. Similarly, any research services received by AIM
through placement of portfolio transactions of other clients may be of value to
AIM in fulfilling its obligations to the Portfolio.
 
                                       13
<PAGE>
 
 
                              GENERAL INFORMATION
 
ORGANIZATION AND DESCRIPTION OF SHARES
 
  The Fund was incorporated in Maryland on May 3, 1993. Shares of common stock
of the Fund are divided into eight classes, of which three represent interests
in the Portfolio and the remaining five represent interests in the Prime
Portfolio. Each class of shares has a par value of $.001 per share. The other
classes of the Fund may have different sales charges and other expenses which
may affect performance. An investor may obtain information concerning the
Fund's other classes by contacting FMC.
 
  All shares of the Fund have equal rights with respect to voting, except that
the holders of shares of a particular portfolio or class will have the
exclusive right to vote on matters pertaining solely to that portfolio or
class. For example, holders of shares of a particular portfolio will have the
exclusive right to vote on any investment advisory agreement or investment
restriction that relates only to such portfolio. In addition, holders of shares
of a particular class will have the exclusive right to vote on any matter, such
as distribution arrangements, which relates solely to such class. The holders
of shares of each portfolio have distinctive rights with respect to dividends
and redemption which are more fully described in this Prospectus. In the event
of liquidation or termination of the Fund, holders of shares of each portfolio
will receive pro rata, subject to the rights of creditors, (a) the proceeds of
the sale of the assets held in the respective portfolio to which such shares
relate, less (b) the liabilities of the Fund attributable to or allocated to
the respective portfolio based on the respective liquidation value of each
portfolio. Fractional shares of each portfolio have the same rights as full
shares to the extent of their proportionate interest.
 
  The Fund will not normally hold annual shareholders' meetings. Shareholders
may remove directors from office by votes cast at a meeting of shareholders or
by written consent, and a meeting of shareholders may be called at the request
of the holders of 10% or more of the Fund's outstanding shares.
 
  There are no preemptive or conversion rights applicable to any of the Fund's
shares. The Fund's shares, when issued, will be fully paid and non-assessable.
The Board of Directors may create additional portfolios and classes of the Fund
without shareholder approval.
 
TRANSFER AGENT AND CUSTODIAN
 
  The Bank of New York acts as custodian for the portfolio securities and cash
of the Portfolio. A I M Institutional Fund Services, Inc., 11 Greenway Plaza,
Suite 1919, Houston, Texas 77046-1173, acts as transfer agent for shares of the
Class.
 
LEGAL COUNSEL
 
  The law firm of Ballard Spahr Andrews & Ingersoll, Philadelphia,
Pennsylvania, serves as counsel to the Fund and has passed upon the legality of
the shares of the Fund.
 
SHAREHOLDER INQUIRIES
 
  Shareholder inquiries concerning the status of an account should be directed
to the Fund at 11 Greenway Plaza, Suite 1919, Houston, Texas 77046-1173, or may
be made by calling (800) 877-7745.
 
OTHER INFORMATION
 
  This Prospectus sets forth basic information that investors should know about
the Fund and the Portfolio prior to investing. A Statement of Additional
Information has been filed with the SEC. Copies of the Statement of Additional
Information are available upon request and without charge by writing or calling
the Fund or FMC. This Prospectus omits certain information contained in the
registration statement filed with the SEC. Copies of the registration
statement, including items omitted herein, may be obtained from the SEC by
paying the charges prescribed under its rules and regulations.
 
                                       14
<PAGE>
 
                      [THIS PAGE INTENTIONALLY LEFT BLANK]
<PAGE>
 
====================================== ====================================== 
                                                                             
SHORT-TERM INVESTMENTS CO.                           PROSPECTUS              
11 Greenway Plaza, Suite 1919                                                
Houston, Texas 77046-1173                         December 12, 1995           
(800) 877-7745                                                                
                                                     SHORT-TERM               
INVESTMENT ADVISOR                                 INVESTMENTS CO.            
A I M ADVISORS, INC.                                                          
11 Greenway Plaza, Suite 1919                       ------------               
Houston, Texas 77046-1173                      LIQUID ASSETS PORTFOLIO         
(713) 626-1919                                      ------------               
                                                                               
DISTRIBUTOR                                     CASH MANAGEMENT CLASS          
FUND MANAGEMENT COMPANY                                                        
11 Greenway Plaza, Suite 1919                                                  
Houston, Texas 77046-1173                         TABLE OF CONTENTS            
(800) 877-7745                                                                 
                                        <TABLE>                                
AUDITORS                                <CAPTION>                              
KPMG PEAT MARWICK LLP                                                  PAGE    
NationsBank Building                                                   ----     
700 Louisiana                           <S>                            <C>      
Houston, Texas 77002                    Summary........................   2     
                                                                               
CUSTODIAN                               Table of Fees and Expenses.....   3     
THE BANK OF NEW YORK                                                           
110 Washington Street                   Suitability For Investors......   4     
8th Floor                                                                      
New York, New York 10286                Investment Program.............   4     
                                                                               
TRANSFER AGENT                          Purchase of Shares.............   8     
A I M INSTITUTIONAL FUND SERVICES, INC.                                        
11 Greenway Plaza, Suite 1919           Redemption of Shares...........   9     
Houston, Texas 77046-1173                                                      
                                        Dividends......................   9     
  NO PERSON HAS BEEN AUTHORIZED TO GIVE                                        
ANY INFORMATION OR TO MAKE ANY          Taxes..........................  10     
REPRESENTATIONS NOT CONTAINED IN THIS                                          
PROSPECTUS IN CONNECTION WITH THE       Net Asset Value................  10     
OFFERING MADE BY THIS PROSPECTUS, AND                                          
IF GIVEN OR MADE, SUCH INFORMATION OR   Yield Information..............  11     
REPRESENTATIONS MUST NOT BE RELIED                                             
UPON AS HAVING BEEN AUTHORIZED BY THE   Reports to Shareholders........  11     
FUND OR THE DISTRIBUTOR. THIS                                                   
PROSPECTUS DOES NOT CONSTITUTE AN       Management of the Fund.........  11     
OFFER IN ANY JURISDICTION TO ANY                                              
PERSON TO WHOM SUCH OFFERING MAY        General Information............  14    
NOT LAWFULLY BE MADE.                   </TABLE>                                
                                                                              
====================================== ====================================== 









<PAGE>
 
                                                                    STATEMENT OF
                                                          ADDITIONAL INFORMATION



                             CASH MANAGEMENT CLASS

                                     OF THE

                            LIQUID ASSETS PORTFOLIO

                                       OF

                           SHORT-TERM INVESTMENTS CO.

                               11 GREENWAY PLAZA
                                   SUITE 1919
                           HOUSTON, TEXAS 77046-1173
                                 (800) 659-1005



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



         THIS STATEMENT OF ADDITIONAL INFORMATION IS NOT A PROSPECTUS.
             IT SHOULD BE READ IN CONJUNCTION WITH THE PROSPECTUS,
                   COPIES OF WHICH MAY BE OBTAINED BY WRITING
                  FUND MANAGEMENT COMPANY, 11 GREENWAY PLAZA,
                     SUITE 1919, HOUSTON, TEXAS 77046-1173
                           OR CALLING (800) 877-7745



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



          STATEMENT OF ADDITIONAL INFORMATION DATED DECEMBER 12, 1995
               RELATING TO THE PROSPECTUS DATED DECEMBER 12, 1995


<PAGE>
 
                               TABLE OF CONTENTS
<TABLE>
<CAPTION> 
                                                                  Page
<S>                                                               <C>
INTRODUCTION.....................................................  1
 
GENERAL INFORMATION ABOUT THE FUND...............................  1
     The Fund and Its Shares.....................................  1
     Directors and Officers......................................  3
     Remuneration of Directors...................................  6
     AIM Funds Retirement Plan for Eligible Directors/Trustees...  7
     Deferred Compensation Agreements............................  8
     Investment Advisor..........................................  9
     Administrator............................................... 10
     Expenses.................................................... 10
     Transfer Agent and Custodian................................ 11
     Reports..................................................... 11
     Fee Waivers................................................. 11
     Principal Holders of Securities............................. 12
 
PURCHASES AND REDEMPTIONS........................................ 16
     Net Asset Value Determination............................... 16
     The Distribution Agreement.................................. 16
     Distribution Plan........................................... 17
     Banking Regulations......................................... 17
     Performance Information..................................... 18
     Redemptions in Kind......................................... 18
     Suspension of Redemption Rights............................. 19
 
INVESTMENT PROGRAM AND RESTRICTIONS.............................. 19
     Eligible Securities......................................... 19
     Commercial Paper Ratings.................................... 20
     Bond Ratings................................................ 21
     Repurchase Agreements....................................... 23
     Investment Restrictions..................................... 23
 
PORTFOLIO TRANSACTIONS........................................... 24
 
TAX MATTERS...................................................... 26
     Qualification as a Regulated Investment Company............. 26
     Excise Tax On Regulated Investment Companies................ 27
     Portfolio Distributions..................................... 27
     Effect of Future Legislation; Local Tax Considerations...... 28

FINANCIAL STATEMENTS............................................. NONE
</TABLE> 

                                       i
<PAGE>
 
                                  INTRODUCTION

     The Liquid Assets Portfolio (the "Portfolio") is an investment portfolio of
Short-Term Investments Co. (the "Fund"), a mutual fund. The rules and
regulations of the United States Securities and Exchange Commission (the "SEC")
require all mutual funds to furnish prospective investors certain information
concerning the activities of the fund being considered for investment. This
information is included in a Prospectus dated December 12, 1995 (the
"Prospectus").  Copies of the Prospectus and additional copies of this Statement
of Additional Information may be obtained without charge by writing the
distributor of the Portfolio's shares, Fund Management Company ("FMC"), 11
Greenway Plaza, Suite 1919, Houston, Texas 77046-1173 or by calling (800) 877-
7745. Investors must receive a Prospectus before they invest.

     This Statement of Additional Information is intended to furnish prospective
investors with additional information concerning the Cash Management Class of
the Portfolio. Some of the information required to be in this Statement of
Additional Information is also included in the Prospectus; thus, in order to
avoid repetition, reference will be made to sections of the Prospectus.
Additionally, the Prospectus and this Statement of Additional Information omit
certain information contained in the registration statement filed with the SEC.
Copies of the registration statement, including items omitted from the
Prospectus and this Statement of Additional Information, may be obtained from
the SEC by paying the charges prescribed under its rules and regulations.


                       GENERAL INFORMATION ABOUT THE FUND

THE FUND AND ITS SHARES

     The Fund is an open-end, diversified series management investment company
which was organized as a corporation under the laws of the State of Maryland on
May 3, 1993, and had no operations prior to November 4, 1993.  Shares of common
stock of the Fund are redeemable at their net asset value at the option of the
shareholder or at the option of the Fund in certain circumstances. For
information concerning the methods of redemption and the rights of share
ownership, investors should consult the Prospectus under the captions "General
Information" and "Redemption of Shares."

     The Fund offers on a continuous basis shares representing an interest in
one of two portfolios: the Portfolio and the Prime Portfolio (together, the
"Portfolios").  The Prime Portfolio consists of five classes of shares, each
having different shareholder qualifications and bearing expenses differently.
The Portfolio consists of the following three classes of shares: Institutional
Class, Private Investment Class and Cash Management Class.  Each such class has
different shareholder qualifications and bears expenses differently.  This
Statement of Additional Information and the associated Prospectus relate solely
to shares of the Cash Management Class (the "Class") of the Portfolio.  Shares
of the other classes of the Portfolio and the classes of the Prime Portfolio are
offered pursuant to separate prospectuses and statements of additional
information.

     As used in the Prospectus, the term "majority of the outstanding shares" of
the Fund, a particular portfolio or a particular class means, respectively, the
vote of the lesser of (i) 67% or more of the shares of the Fund, such portfolio
or such class present at a meeting of the Fund's shareholders, if the holders of
more than 50% of the outstanding shares of the Fund, such portfolio or such
class are present or represented by proxy, or (ii) more than 50% of the
outstanding shares of the Fund, such portfolio or such class.

     Shareholders of the Fund do not have cumulative voting rights, and
therefore the holders of more than 50% of the outstanding shares of the Fund
voting together for election of directors can elect all of the members of the
Board of Directors of the Fund. In such event, the remaining holders cannot
elect any members of the Board of Directors of the Fund.

                                       1
<PAGE>
 
     The Board of Directors may classify or reclassify any unissued shares of
any class or classes in addition to those already authorized by setting or
changing in any one or more respects, from time to time, prior to the issuance
of such shares, the preferences, conversion or other rights, voting powers,
restrictions, limitations as to dividends, qualifications, or terms or
conditions of redemption, of such shares. Any such classification or
reclassification will comply with the provisions of the Investment Company Act
of 1940 (the "1940 Act").

     The Charter of the Fund authorizes the issuance of 40 billion shares with a
par value of $.001 each, of which 16 billion shares represent an interest in the
Portfolio (or class thereof) and 22 billion shares represent an interest in the
Prime Portfolio (or class thereof).  A share of a portfolio (or class)
represents an equal proportionate interest in such Portfolio (or class) with
each other share of that Portfolio (or class) and is entitled to a proportionate
interest in the dividends and distributions from that Portfolio (or class).
Additional information concerning the rights of share ownership is set forth in
the Prospectus.

     The assets received by the Fund for the issue or sale of shares of each of
the Portfolios and all income, earnings, profits, losses and proceeds therefrom,
subject only to the rights of creditors, are allocated to that Portfolio, and
constitute the underlying assets of that Portfolio. The underlying assets of the
Portfolios are segregated and each Portfolio is charged with the expenses with
respect to that portfolio and with a share of the general expenses of the Fund.
While the expenses of the Fund are allocated to the separate books of account of
each of the Portfolios, certain expenses may be legally chargeable against the
assets of the entire Fund.

     The Charter provides that no director or officer of the Fund shall be
liable to the Fund or its shareholders for money damages, except (i) to the
extent that it is proved that such director or officer actually received an
improper benefit or profit in money, property or services, for the amount of the
benefit or profit in money, property or services actually received, or (ii) to
the extent that a judgment or other final adjudication adverse to such director
or officer is entered in a proceeding based on a finding in the proceeding that
such director's or officer's action, or failure to act, was the result of active
and deliberate dishonesty and was material to the cause of action adjudicated in
the proceeding.  The foregoing shall not be construed to protect or purport to
protect any director or officer of the Fund against any liability to the Fund or
its shareholders to which such director or officer would otherwise be subject by
reason of willful misfeasance, bad faith, gross negligence or reckless disregard
of the duties involved in the conduct of such office.  The Fund shall indemnify
and advance expenses to its currently acting and its former directors to the
fullest extent that indemnification of directors is permitted by the Maryland
General Corporation Law.  The Fund shall indemnify and advance expenses to its
officers to the same extent as its directors and to such further extent as is
consistent with law.  The Board of Directors may by By-Law, resolution or
agreement make further provision for indemnification of directors, officers,
employees and agents of the Fund to the fullest extent permitted by the Maryland
General Corporation Law.

     As described in the Prospectus, the Fund will not normally hold annual
shareholders' meetings. At such time as less than a majority of the directors
have been elected by the shareholders, the directors then in office will call a
shareholders' meeting for the election of directors.  Upon written request by
ten or more shareholders, who have been such for at least six months and who
hold shares constituting 1% of the outstanding shares, stating that such
shareholders wish to communicate with the other shareholders for the purpose of
obtaining the signatures necessary to demand a meeting to consider removal of a
director, the Fund has undertaken to provide a list of shareholders or to
disseminate appropriate materials (at the expense of the requesting
shareholders).

     Except as otherwise disclosed in the Prospectus and in this Statement of
Additional Information, the directors shall continue to hold office and may
appoint their successors.

                                       2
<PAGE>
 
DIRECTORS AND OFFICERS

     The directors and officers of the Fund and their principal occupations
during the last five years are set forth below.  Unless otherwise indicated, the
address of each director and officer is 11 Greenway Plaza, Suite 1919, Houston,
Texas 77046.

     *CHARLES T. BAUER, Director and Chairman (76)

     Director, Chairman and Chief Executive Officer, A I M Management Group
Inc.; Chairman of the Board of Directors, A I M Advisors, Inc., A I M Capital
Management, Inc., A I M Distributors, Inc., A I M Fund Services, Inc., A I M
Global Associates, Inc., A I M Global Holdings, Inc., A I M Institutional Fund
Services, Inc. and  Fund Management Company; and Director, AIM Global Advisors
Limited, A I M Global Management Company Limited and AIM Global Venture Co.

     BRUCE L. CROCKETT, Director (51)
     COMSAT Corporation
     6560 Rock Spring Drive
     Bethesda, MD  20817

     Director, President and Chief Executive Officer, COMSAT Corporation
(Includes COMSAT World Systems, COMSAT Mobile Communications, COMSAT Video
Enterprises, COMSAT RSI and COMSAT International Ventures). Previously,
President and Chief Operating Officer, COMSAT Corporation; President, World
Systems Division, COMSAT Corporation; and Chairman, Board of Governors of
INTELSAT (each of the COMSAT companies listed above is an international
communication, information and entertainment-distribution services company).

     OWEN DALY II, Director (71)
     Six Blythewood Road
     Baltimore, MD 21210

     Director, Cortland Trust Inc. (investment company).  Formerly, Director,
CF & I Steel Corp., Monumental Life Insurance Company and Monumental General
Insurance Company; and Chairman of the Board of Equitable Bancorporation.

     **CARL FRISCHLlNG, Director (58)
     919 Third Avenue
     New York, NY 10022

     Partner, Kramer, Levin, Naftalis, Nessen, Kamin & Frankel (law firm).
Formerly, Partner, Reid & Priest (law firm); and, prior thereto, Partner,
Spengler Carlson Gubar Brodsky & Frischling (law firm).

- ----------------------
*  A director who is an "interested person" of the Fund and A I M Advisors,
   Inc. as defined in the 1940 Act.

** A director who is an "interested person" of the Fund as defined in the
   1940 Act.

                                       3
<PAGE>
 
     ***ROBERT H. GRAHAM, Director and President (49)

     Director, President and Chief Operating Officer, A I M Management Group
Inc.; Director and President, A I M Advisors, Inc.; Director and Executive Vice
President, A I M Distributors, Inc.; Director and Senior Vice President, A I M
Capital Management, Inc., A I M Fund Services, Inc., A I M Global Associates,
Inc., A I M Global Holdings, Inc., AIM Global Ventures Co., A I M Institutional
Fund Services, Inc. and Fund Management Company; and Senior Vice President, AIM
Global Advisors Limited.

     JOHN F. KROEGER, Director (71)
     24875 Swan Road - Martingham
     Box 464
     St. Michaels, MD 21663

     Trustee, Flag Investors International Fund, Inc.; and Director, Flag
Investors Emerging Growth Fund, Inc., Flag Investors Telephone Income Fund,
Inc., Flag Investors Equity Partners Fund, Inc., Total Return U.S. Treasury
Fund, Inc., Flag Investors Intermediate Term Income Fund, Inc., Managed
Municipal Fund, Inc., Flag Investors Value Builder Fund, Inc., Flag Investors
Maryland Intermediate Tax-Free Income Fund, Inc., Flag Investors Real Estate
Securities Fund, Inc., Alex. Brown Cash Reserve Fund, Inc. and North American
Government Bond Fund, Inc. (investment companies).  Formerly, Consultant,
Wendell & Stockel Associates, Inc. (consulting firm).

     LEWIS F. PENNOCK, Director (53)
     8955 Katy Freeway, Suite 204
     Houston, TX 77024

     Attorney in private practice in Houston, Texas.

     IAN W. ROBINSON, Director (72)
     183 River Drive
     Tequesta, FL 33469

     Formerly, Executive Vice President and Chief Financial Officer, Bell
Atlantic Management Services, Inc. (provider of centralized management services
to telephone companies); Executive Vice President, Bell Atlantic Corporation
(parent of seven telephone companies); and Vice President and Chief Financial
Officer, Bell Telephone Company of Pennsylvania and Diamond State Telephone
Company.

     LOUIS S. SKLAR, Director (56)
     Transco Tower, 50th Floor
     2800 Post Oak Blvd.
     Houston, TX 77056

     Executive Vice President, Development and Operations, Hines Interests
Limited Partnership (real estate development).

- --------------------
*** A director who is an "interested person" of the Fund and A I M Advisors,
    Inc. as defined in the 1940 Act.

                                       4
<PAGE>
 
     ****JOHN J. ARTHUR, Senior Vice President and Treasurer (51)

     Senior Vice President and Treasurer, A I M Advisors, Inc.; Vice President
and Treasurer, A I M  Management Group Inc., A I M  Capital Management, Inc.,
A I M Distributors, Inc., A I M Fund Services, Inc., A I M Institutional Fund
Services, Inc. and Fund Management Company; and Vice President, AIM Global
Advisors Limited, A I M Global Associates, Inc., A I M Global Holdings, Inc. and
AIM Global Ventures Co.

     GARY T. CRUM, Senior Vice President (48)

     Director and President, A I M Capital Management, Inc.; Director and Senior
Vice President, A I M Management Group Inc., A I M Advisors, Inc., A I M Global
Associates, Inc., A I M Global Holdings, Inc. and AIM Global Ventures Co.;
Director, A I M Distributors, Inc.; and Senior Vice President, AIM Global
Advisors Limited.

     ****CAROL F. RELIHAN, Vice President and Secretary (41)

     Vice President, General Counsel and Secretary, A I M Management Group Inc.,
A I M Advisors, Inc., A I M Fund Services, Inc., A I M Institutional Fund
Services, Inc. and Fund Management Company; Vice President and Secretary, A I M
Distributors, Inc., A I M Global Associates, Inc. and A I M Global Holdings,
Inc.; Vice President and Assistant Secretary, AIM Global Advisors Limited and
AIM Global Ventures Co.; and Secretary, A I M Capital Management, Inc.

     DANA R. SUTTON, Vice President and Assistant Treasurer (36)

     Vice President and Fund Controller, A I M Advisors, Inc.; and Assistant
Vice President and Assistant Treasurer, Fund Management Company.

     MELVILLE B. COX, Vice President (52)

     Vice President, A I M Advisors, Inc., A I M Capital Management, Inc., A I M
Fund Services, Inc. and A I M Institutional Fund Services, Inc.; and Assistant
Vice President, A I M Distributors, Inc. and Fund Management Company.  Formerly,
Vice President, Charles Schwab & Co., Inc.; Assistant Secretary, Charles Schwab
Family of Funds and Schwab Investments; Chief Compliance Officer, Charles Schwab
Investment Management, Inc.; and Vice President, Integrated Resources Life
Insurance Co. and Capitol Life Insurance Co.

     KAREN DUNN KELLEY, Vice President (35)

     Director, A I M Global Management Company Limited; Senior Vice President,
A I M Capital Management, Inc. and AIM Global Advisors Limited; and Vice
President, A I M Advisors, Inc. and AIM Global Ventures Co.

     J. ABBOTT SPRAGUE, Vice President (40)

     Director and President, A I M Institutional Fund Services, Inc. and Fund
Management Company; Director and Senior Vice President, A I M Advisors, Inc.;
and Senior Vice President, A I M Management Group Inc.

- ---------------------
**** Mr. Arthur and Ms. Relihan are married to each other.

                                       5
<PAGE>
 
     The Board of Directors has an Audit Committee, an Investments Committee,
and a Nominating and Compensation Committee.

     The members of the Audit Committee are Messrs. Daly, Kroeger (Chairman),
Pennock and Robinson. The Audit Committee is responsible for meeting with the
Portfolio's auditors to review audit procedures and results and to consider any
matters arising from an audit to be brought to the attention of the directors as
a whole with respect to the Portfolio's fund accounting or its internal
accounting controls, or for considering such matters as may from time to time be
set forth in a charter adopted by the Board of Directors and such Committee.

     The members of the Investments Committee are Messrs. Bauer, Crockett, Daly
(Chairman), Kroeger and Pennock. The Investments Committee is responsible for
reviewing portfolio compliance, brokerage allocation, portfolio investment
pricing issues, interim dividend and distribution issues, or considering such
matters as may from time to time be set forth in a charter adopted by the Board
of Directors and such Committee.

     The members of the Nominating and Compensation Committee are Messrs.
Crockett, Daly, Kroeger, Pennock (Chairman) and Sklar. The Nominating and
Compensation Committee is responsible for considering and nominating individuals
to stand for election as directors who are not interested persons as long as the
Fund maintains a distribution plan pursuant to rule 12b-1 under the 1940 Act,
reviewing from time to time the compensation payable to the disinterested
directors, or considering such matters as may from time to time be set forth in
a charter adopted by the board and such Committee.

     All of the Fund's directors also serve as directors or trustees of some or
all of the other investment companies managed or advised by A I M Advisors, Inc.
("AIM") or distributed and administered by FMC. Most of the Fund's executive
officers hold similar offices with some or all of such investment companies.

REMUNERATION OF DIRECTORS

     Each director is reimbursed for expenses incurred in connection with each
meeting of the Board of Directors or any Committee attended. The directors of
the Fund who do not serve as officers of the Fund are compensated for their
services according to a fee schedule which recognizes the fact that they also
serve as directors or trustees of certain other regulated investment companies
managed, administered or distributed by AIM or its affiliates (the "AIM Funds").
Each such director receives a fee, allocated among the AIM Funds for which he
serves as a director or trustee, which consists of an annual retainer component
and a meeting fee component.

     Set forth below is information regarding compensation paid or accrued
during the fiscal year ended August 31, 1995 for each director of the Fund:

                                       6
<PAGE>
 
<TABLE>
<CAPTION>
===================================================================================
                                          RETIREMENT       
                       AGGREGATE           BENEFITS                  TOTAL
                      COMPENSATION          ACCRUED              COMPENSATION
     DIRECTOR         FROM FUND(1)    BY ALL AIM FUNDS(2)    FROM ALL AIM FUNDS(3)
- -----------------------------------------------------------------------------------
<S>                  <C>             <C>                    <C>
Charles T. Bauer             $  -0-                $   -0-                  $   -0-
- -----------------------------------------------------------------------------------
Bruce L. Crockett             2,091                  2,814                   45,094
- -----------------------------------------------------------------------------------
Owen Daly II                  2,096                 14,375                   45,844
- -----------------------------------------------------------------------------------
Carl Frischling               2,091                  7,542                   45,094
- -----------------------------------------------------------------------------------
Robert H. Graham                -0-                    -0-                      -0-
- -----------------------------------------------------------------------------------
John F. Kroeger               2,096                 20,517                   45,844
- -----------------------------------------------------------------------------------
Lewis F. Pennock              2,096                  5,093                   45,844
- -----------------------------------------------------------------------------------
Ian W. Robinson               2,071                 10,396                   45,095
- -----------------------------------------------------------------------------------
Louis S. Sklar                2,071                  4,682                   45,094
===================================================================================
</TABLE> 
- ----------------------
(1) The total amount of compensation deferred by all Directors of the Fund
    during the fiscal year ended August 31, 1995, including interest earned
    thereon, was $8,448.

(2) During the fiscal year ended August 31, 1995, the total amount of expenses
    allocated to the Company in respect of such retirement benefits was
    $4,583. Data reflects compensation earned for the calendar year ended
    December 31, 1994.

(3) Messrs. Bauer, Daly, Graham, Kroeger and Pennock each serves as a Director
    or Trustee of a total of 11 AIM Funds.  Messrs. Crockett, Frischling,
    Robinson and Sklar each serves as a Director or Trustee of a total of 10
    AIM Funds.  Data reflects compensation earned for the calendar year ended
    December 31, 1994.

AIM FUNDS RETIREMENT PLAN FOR ELIGIBLE DIRECTORS/TRUSTEES

     Under the terms of the AIM Funds Retirement Plan for Eligible
Directors/Trustees (the "Plan"), each director (who is not a employee of any of
the AIM Funds, A I M Management Group Inc. or any of their affiliates) may be
entitled to certain benefits upon retirement from the Board of Directors.
Pursuant to the Plan, the normal retirement date is the date on which the
eligible director has attained age 65 and has completed at least five years of
continuous service with one or more of the AIM Funds.  Each eligible director is
entitled to receive an annual benefit from the AIM Funds commencing on the first
day of the calendar quarter coincident with or following his date of retirement
equal to 5% of such Director's compensation paid by the AIM Funds multiplied by
the number of such Director's years of service (not in excess of 10 years of
service) completed with respect to any of the AIM Funds.  Such benefit is
payable to each eligible director in quarterly installments for a period of no
more than five years.  If an eligible director dies after attaining the normal
retirement date but before receipt of any benefits under the Plan commences, the
director's surviving spouse (if any) shall receive a quarterly survivor's
benefit equal to 50% of the amount payable to the deceased director, for no more
than five years beginning the first day of the calendar quarter following the
date of the director's death.  Payments under the Plan are not secured or funded
by any AIM Fund.

                                       7
<PAGE>
 
     Set forth below is a table that shows the estimated annual benefits payable
to an eligible director upon retirement assuming various compensation and years
of service classifications.  The estimated credited years of service as of
December 31, 1994 for Messrs. Crockett, Daly, Frischling, Kroeger, Pennock,
Robinson and Sklar are 7, 8, 17, 17, 13, 7 and 5 years, respectively.

<TABLE>
<CAPTION>
 
                                                    Annual Compensation Paid
                                                        By All AIM Funds

<S>                                       <C>            <C>                 <C>
                                                         $60,000             $65,000
                                          ==========================================                                 
Number of Years of Service with the AIM   10             $30,000             $32,500
 Funds                                    ------------------------------------------                                 
                                           9             $27,000             $29,250
                                          ------------------------------------------                                 
                                           8             $24,000             $26,000
                                          ------------------------------------------                                 
                                           7             $21,000             $22,750
                                          ------------------------------------------                                 
                                           6             $18,000             $19,500
                                          ------------------------------------------
                                           5             $15,000             $16,250
                                          ==========================================
 
</TABLE>

DEFERRED COMPENSATION AGREEMENTS

     Messrs. Daly, Frischling, Kroeger, Robinson and Sklar (for purposes of this
paragraph only, the "deferring directors") have each executed a Deferred
Compensation Agreement (collectively, the "Agreements").  Pursuant to the
Agreements, the deferring directors elected to defer receipt of 100% of their
compensation payable by the Fund, and such amounts are placed into a deferral
account.  Currently, the deferring directors may select various AIM Funds in
which all or part of their deferral account shall be deemed to be invested.
Distributions from the deferring directors' deferral accounts will be paid in
cash, in generally equal quarterly installments over a period of five years
beginning on the date the deferring director's retirement benefits commence
under the Plan.  The Fund's Board of Directors, in its sole discretion, may
accelerate or extend the distribution of such deferral accounts after the
deferring director's termination of service as a director of the Fund.  If a
deferring director dies prior to the distribution of amounts in his deferral
account, the balance of the deferral account will be distributed to his
designated beneficiary in a single lump sum payment as soon as practicable after
such deferring director's death.  The Agreements are not funded and, with
respect to the payments of amounts held in the deferral accounts, the deferring
directors have the status of unsecured creditors of the Fund and of each other
AIM Fund from which they are deferring compensation.

     During the fiscal year ended August 31, 1995, $14,116 directors' fees and
expenses were allocated to the Portfolio.

     During the year ended August 31, 1995, the Portfolio paid legal fees of
$1,317 for services rendered by Reid & Priest as counsel to the Board of
Directors.  In September 1994, Kramer, Levin, Naftalis, Nessen, Kamin & Frankel
was appointed as counsel to the Board of Directors.  During the year ended
August 31, 1995, the Portfolio paid legal fees of $4,721 for services rendered
by that firm as counsel.  A director of the Fund is a partner of Kramer, Levin,
Naftalis, Nessen, Kamin & Frankel and was a partner of the firm of Reid & Priest
prior to September 1994.

                                       8
<PAGE>
 
INVESTMENT ADVISOR

     AIM, 11 Greenway Plaza, Suite 1919, Houston, Texas 77046-1173, acts as the
Portfolio's investment advisor pursuant to a Master Investment Advisory
Agreement dated October 18, 1993 (the "Advisory Agreement"). A prior investment
advisory agreement (the "Prior Advisory Agreement") with substantially identical
terms (including the fee schedules) to the Advisory Agreement was previously in
effect with respect to the Predecessor Portfolio.

     AIM was organized in 1976 and, together with its affiliates, advises,
manages or administers 37 investment company portfolios.  As of October 31,
1995, the total assets of the investment company portfolios managed or advised
by AIM and its affiliates were approximately $39.3 billion.  AIM is a wholly-
owned subsidiary of A I M Management Group Inc. ("AIM Management"), 11 Greenway
Plaza, Suite 1919, Houston, Texas 77046-1173.  Certain of the directors and
officers of AIM are also executive officers of the Fund and their affiliations
are shown under "Directors and Officers."

     AIM and the Fund have adopted a Code of Ethics which requires investment
personnel (a) to pre-clear all personal securities transactions, (b) to file
reports regarding such transactions, and (c) to refrain from personally engaging
in (i) short-term trading of a security, (ii) transactions involving a security
within seven days of an AIM Fund transaction involving the same security, and
(iii) transactions involving securities being considered for investment by an
AIM Fund. The Code also prohibits investment personnel from purchasing
securities in an initial public offering. Personal trading reports are reviewed
periodically by AIM, and the Board of Directors reviews annually such reports
(including information on any substantial violations of the Code). Violations of
the Code may result in censure, monetary penalties, suspension or termination of
employment.

     Pursuant to the terms of the Advisory Agreement, AIM manages the investment
of the Portfolio's assets. AIM obtains and evaluates economic, statistical and
financial information to formulate and implement investment policies for the
Portfolio. Any investment program undertaken by AIM will at all times be subject
to the policies and control of the Fund's Board of Directors. AIM shall not be
liable to the Fund or its shareholders for any act or omission by AIM or for any
loss sustained by the Fund or its shareholders except in the case of willful
misfeasance, bad faith, gross negligence or reckless disregard of duty.

     As compensation for its services with respect to the Portfolio, AIM
receives a fee at the annual rate of 0.15% of the average daily net assets of
the Portfolio.  The Advisory Agreement requires AIM to reduce its fee to the
extent required to satisfy any expense limitations imposed by the securities
laws or regulations thereunder of any state in which the Portfolio's shares are
qualified for sale.

     During the period November 4, 1993 (date operations commenced) through
August 31, 1994, AIM voluntarily waived fees of $1,500,977, which it was
entitled to receive pursuant to the Advisory Agreement with respect to the
Portfolio.  During the fiscal year ended August 31, 1995, AIM received fees
pursuant to the Advisory Agreement in the amount of $1,323,637 and AIM
voluntarily waived fees of $1,127,509, which it was entitled to receive pursuant
to the Advisory Agreement with respect to the Portfolio.

     The Advisory Agreement provides that, upon the request of the Board of
Directors, AIM may perform (or arrange for the performance of) certain
additional services on behalf of the Portfolio which are not required by the
Advisory Agreement.  AIM may receive reimbursement or reasonable compensation
for such additional services, as may be agreed upon by AIM and the Board of
Directors, based upon a finding by the Board of Directors that the provision of
such services would be in the best interest of the Portfolio and its
shareholders.  The Board of Directors has made such a finding and, accordingly,
the Fund has entered into the Master Administrative Services Agreement under
which AIM will provide the additional services described below under the caption
"Administrator."

                                       9
<PAGE>
 
     The Advisory Agreement will continue in effect until June 30, 1996 and from
year to year thereafter, provided that it is specifically approved at least
annually by the Fund's Board of Directors and the affirmative vote of a majority
of the directors who are not parties to the Advisory Agreement or "interested
persons" of any such party by votes cast in person at a meeting called for such
purpose.  The Fund or AIM may terminate the Agreement on 60 days' notice without
penalty. The Advisory Agreement terminates automatically in the event of its
"assignment," as defined in the 1940 Act.

ADMINISTRATOR

     AIM also acts as the Portfolio's administrator pursuant to a Master
Administrative Services Agreement dated as of October 18, 1993 between AIM and
the Fund (the "Administrative Services Agreement").  In addition, AIM and A I M
Institutional Fund Services, Inc. ("AIFS") entered into an administrative
services agreement, dated as of September 16, 1994 (the "AIFS Administrative
Services Agreement").

     Under the Administrative Services Agreement, AIM has agreed to perform or
arrange for the performance of certain accounting, shareholder servicing and
other administrative services for the Portfolio which are not required to be
performed by AIM under the Advisory Agreement. For such services, AIM would be
entitled to receive from the Fund reimbursement of AIM's costs or such
reasonable compensation as may be approved by the Fund's Board of Directors.
The Administrative Services Agreement provides that such agreement will continue
in effect until June 30, 1996, and shall continue in effect from year to year
thereafter only if such continuance is specifically approved at least annually
by the Fund's Board of Directors, including the Non-Interested Directors, by
votes cast in person at a meeting called for such purpose.  The Administrative
Services Agreement was last approved by the Fund's Board of Directors (including
the Non-Interested Directors) on May 9, 1995.

     Pursuant to the Administrative Services Agreement, AIM was reimbursed for
the fiscal years ended August 31, 1995 and 1994 in the amounts of $97,044 and
$39,492, respectively.

     The AIFS Administrative Services Agreement between AIM and AIFS, a
registered transfer agent and wholly-owned subsidiary of AIM, provided that AIFS
could perform certain shareholder services for the Portfolio.  For such
services, AIFS was entitled to receive from AIM reimbursement of its costs
associated with the Class.  The AIFS Administrative Services Agreement was
terminated July 1, 1995.  Beginning July 1, 1995, AIFS received fees with
respect to the Portfolio for its provision of shareholder services pursuant to a
Transfer Agency and Service Agreement with the Fund.  For the period from August
31, 1994 through June 30, 1995 and for the period from June 1, 1994 through
August 31, 1994, AIFS or its affiliates received shareholder services fees from
AIM with respect to the Portfolio in the amounts of $38,870 and $5,110,
respectively.   For the period July 1, 1995 through August 31, 1995, AIFS
received transfer agency fees from AIM with respect to the Portfolio in the
amount of $9,045.

EXPENSES

     Expenses of the Fund include, but are not limited to, fees paid to AIM
under the Advisory Agreement, the charges and expenses of any registrar, any
custodian or depositary appointed by the Fund for the safekeeping of cash,
portfolio securities and other property, and any transfer, dividend or
accounting agent or agents appointed by the Fund; brokers' commissions
chargeable to the Fund in connection with portfolio securities transactions to
which the Fund is a party; all taxes, including securities issuance and transfer
taxes, and fees payable by the Fund to federal, state or other governmental
agencies; the costs and expenses of engraving or printing of certificates
representing shares of the Fund; all costs and expenses in connection with the
registration and maintenance of registration of the Fund and shares with the SEC
and various states and other jurisdictions (including filing and legal fees and
disbursements of counsel); the costs and expenses of printing, including
typesetting, and distributing prospectuses and statements of additional

                                      10
<PAGE>
 
information of the Fund and supplements thereto to the Fund's shareholders; all
expenses of shareholders' and directors' meetings and of preparing, printing and
mailing of prospectuses, proxy statements and reports to shareholders; fees and
travel expenses of directors and director members of any advisory board or
committee; all expenses incident to the payment of any dividend, distribution,
withdrawal or redemption, whether in shares or in cash; charges and expenses of
any outside service used for pricing of the Fund's shares; charges and expenses
of legal counsel, including counsel to the directors of the Fund who are not
"interested persons" (as defined in the 1940 Act) of the Fund or AIM, and of
independent accountants in connection with any matter relating to the Fund;
membership dues of industry associations; interest payable on Fund borrowings;
postage; insurance premiums on property or personnel (including officers and
directors) of the Fund which inure to its benefit; and extraordinary expenses
(including, but not limited to, legal claims and liabilities and litigation
costs and any indemnification related thereto).  Except as disclosed under the
caption "Distribution Plan," FMC bears the expenses of printing and distributing
prospectuses and statements of additional information (other than those
prospectuses and statements of additional information distributed to existing
shareholders of the Fund) and any other promotional or sales literature used by
FMC or furnished by FMC to purchasers or dealers in connection with the public
offering of the Fund's shares.

     Expenses of the Fund which are not directly attributable to the operations
of either of the Portfolios are prorated among all classes of the Fund based
upon the relative net assets of each class.  Expenses of the Fund which are not
directly attributable to a specific class of shares but are directly
attributable to one or both of the Portfolios are prorated among all classes of
such Portfolios based upon the relative net assets of each such class.  The
expenses of the Portfolio are deducted from its total income before dividends
are paid.  Expenses of the Fund which are directly attributable to a specific
class of shares are charged against the income available for distribution as
dividends to the holders of such shares.

TRANSFER AGENT AND CUSTODIAN

     The Bank of New York acts as custodian for the portfolio securities and
cash of the Portfolio. The Bank of New York receives such compensation from the
Fund for its services in such capacity as is agreed to from time to time by The
Bank of New York and the Fund. The address of The Bank of New York is 110
Washington Street, 8th Floor, New York, New York 10286.

     A I M Institutional Fund Services, Inc., 11 Greenway Plaza, Suite 1919,
Houston, Texas 77046-1173  serves as a transfer agent and dividend disbursing
agent for the shares of the Class and receives an annual fee from the Fund for
its services in such capacity in the amount of .007% of average daily net assets
of the Fund, payable monthly.  Such compensation may be changed from time to
time as is agreed to by  AIFS and the Fund.

REPORTS

     The Fund furnishes shareholders with semi-annual reports containing
information about the Fund and its operations, including a schedule of
investments held in the Portfolio and its financial statements. The annual
financial statements are audited by the Fund's independent auditors. The Board
of Directors has selected KPMG Peat Marwick LLP, NationsBank Building, 700
Louisiana, Houston, Texas 77002, as the independent auditors to audit the
financial statements and review the tax returns of the Portfolio.

FEE WAIVERS

     AIM may, from time to time, agree to waive voluntarily all or any portion
of its fees or reimburse the Portfolio for certain of its expenses.  Such
waivers or reimbursements may be discontinued at any time.  Shareholders of the
Portfolio will receive notice 30 days prior to the effective date of any
substantial change in such waivers or reimbursements.

                                      11
<PAGE>
 
PRINCIPAL HOLDERS OF SECURITIES

     PRIME PORTFOLIO

     To the best of the knowledge of the Fund, the names and addresses of the
holders of 5% or more of the outstanding shares of each class of the Portfolio
as of October 25, 1995, and the percentage of the Portfolio's outstanding shares
owned by such shareholders as of such date are as follows:

<TABLE> 
<CAPTION> 
                                                  PERCENT
          NAME AND ADDRESS                       OWNED OF
          OF RECORD OWNER                       RECORD ONLY*
          ----------------                      ------------
<S>       <C>                                   <C>

INSTITUTIONAL CLASS
- -------------------

NationsBank of Texas                               13.81%
P.O. Box 831000
Dallas, TX 75283-1000

U.S. Bank of Oregon                                13.23%
321 Southwest 6th Street
Portland, OR 97208

Trust Company Bank                                  8.19%
P.O. Box 105504
Atlanta, GA 30348

Texas Commerce Bank                                 7.62%
P.O. Box 2558
Houston, TX 77252-8098

Boatmen's Trust Company                             7.27%
100 North Broadway
St. Louis, MO 63101

Frost National Bank                                 7.26%
P.O. Box 1600
San Antonio, TX 78296
</TABLE> 

- ---------------------
* The Fund has no knowledge as to whether all or any portion of the shares of 
  the class owned of record are also owned beneficially.

                                      12
<PAGE>
 
<TABLE> 
<CAPTION> 
                                                  PERCENT
          NAME AND ADDRESS                       OWNED OF
          OF RECORD OWNER                       RECORD ONLY*
          ----------------                      ------------
<S>       <C>                                   <C>

PRIVATE INVESTMENT CLASS
- ------------------------

Huntington Capital Corporation                      71.90%**
41 South High Street
Columbus, OH 43287

Var & Co.                                           17.39%
180 East 5th Street
St. Paul, MN 55101

Frost National Bank                                  6.94%
P.O. Box 1600
San Antonio, TX 78296
</TABLE> 


<TABLE> 
<CAPTION> 
                                                  PERCENT
          NAME AND ADDRESS                       OWNED OF
          OF RECORD OWNER                       RECORD ONLY*
          ----------------                      ------------
<S>       <C>                                   <C>

PERSONAL INVESTMENT CLASS
- -------------------------

Bank of New York                                    67.37%**
440 Manaroneck Ave.
Harrison, NY 10528

Cullen/Frost Discount Brokers                       30.94%**
P.O. Box 2358
San Antonio, TX 78299
</TABLE> 

<TABLE> 
<CAPTION> 
                                                  PERCENT
          NAME AND ADDRESS                       OWNED OF
          OF RECORD OWNER                       RECORD ONLY*
          ----------------                      ------------
<S>       <C>                                   <C>

CASH MANAGEMENT CLASS
- ---------------------

Piper Jaffray As Agent For Customer                 35.24%**
101 California Street
Suite 1150
San Francisco, CA 94111

</TABLE> 

- ---------------------
*  The Fund has no knowledge as to whether all or any portion of the shares of 
   the class owned of record are also owned beneficially.

** A shareholder who holds more than 25% of the outstanding shares of a class 
   may be presumed to be in "control" of such class of shares, as defined in the
   1940 Act.

                                      13
<PAGE>
 
<TABLE> 
<CAPTION> 
                                                  PERCENT
          NAME AND ADDRESS                       OWNED OF
          OF RECORD OWNER                      RECORD ONLY*
          ----------------                     ------------
<S>       <C>                                  <C>
Piper Jaffray As Agent For Customer                29.49%**
P.O. Box 160727
Sacramento, CA 95816-0727

Bank Of New York                                   10.75%
One Wall Street
New York, NY 10286

Citibank As Agent For Customer                      8.38%
120 Wall Street 13th Floor
New York, NY 10043
</TABLE> 


RESOURCE CLASS
- --------------

          AIM provided the initial capitalization of the Resource Class of the
Prime Portfolio and, accordingly, as of the date of this Statement of Additional
Information, owned all the outstanding shares of common stock of the Resource
Class of the Prime Portfolio.  Although the Resource Class of the Prime
Portfolio expects that the sale of its shares to the public pursuant to the
Prospectus will reduce the percentage of such shares owned by AIM to less than
1% of the total shares outstanding, as long as AIM owns over 25% of the shares
of the Resource Class of the Prime Portfolio that are outstanding, it may be
presumed to be in "control" of the Resource Class of the Prime Portfolio, as
defined in the 1940 Act.

LIQUID ASSETS PORTFOLIO

          To the best of the knowledge of the Fund, the names and addresses of
the holders of 5% or more of the outstanding shares of each class of the Liquid
Assets Portfolio as of October 25, 1995, the percentage of the Liquid Assets
Portfolio's outstanding shares owned by such shareholders as of such date are as
follows:

<TABLE> 
<CAPTION> 
                                                  PERCENT
          NAME AND ADDRESS                       OWNED OF
          OF RECORD OWNER                       RECORD ONLY*
          ----------------                      ------------
<S>       <C>                                   <C>

INSTITUTIONAL CLASS
- -------------------

Trust Company Bank                                 20.96%
P.O. Box 105504
Atlanta, GA 30348
</TABLE> 

- ---------------------
*  The Fund has no knowledge as to whether all or any portion of the shares of 
   the class owned of record are also owned beneficially.

** A shareholder who holds more than 25% of the outstanding shares of a class 
   may be presumed to be in "control" of such class of shares, as defined in the
   1940 Act.

                                      14
<PAGE>
 
<TABLE> 
<CAPTION> 
                                                  PERCENT
          NAME AND ADDRESS                       OWNED OF
          OF RECORD OWNER                       RECORD ONLY*
          ----------------                      ------------
<S>       <C>                                   <C>

Wachovia Bank & Trust                               14.33%
P.O. Box 3075
Winston-Salem, NC 27150
</TABLE> 

<TABLE> 
<CAPTION> 
                                                  PERCENT
          NAME AND ADDRESS                       OWNED OF
          OF RECORD OWNER                       RECORD ONLY*
          ----------------                      ------------
<S>       <C>                                   <C>

INSTITUTIONAL CLASS
- -------------------

NationsBank Dallas                                  11.09%
P.O. Box 831000
Dallas, TX 75283-1000

Society National Bank                                7.57%
127 Public Square
Cleveland, OH 44114-1306

Boatmen's Trust Company                              6.56%
100 North Broadway
St. Louis, MO 63102

Firstar Bank of Madison                              5.41%
P.O. Box 7900
Madison, WI 53707
</TABLE> 


PRIVATE INVESTMENT CLASS
- ------------------------

          AIM provided the initial capitalization of the Private Investment
Class of the Liquid Assets Portfolio and, accordingly, as of the date of this
Statement of Additional Information, owned all the outstanding shares of common
stock of the Private Investment Class of the Liquid Assets Portfolio.  Although
the Private Investment Class of the Liquid Assets Portfolio expects that the
sale of its shares to the public pursuant to the Prospectus will reduce the
percentage of such shares owned by AIM to less than 1% of the total shares
outstanding, as long as AIM owns over 25% of the shares of the Private
Investment Class of the Liquid Assets Portfolio that are outstanding, it may be
presumed to be in "control" of the Private Investment Class of the Liquid Assets
Portfolio, as defined in the 1940 Act.

- ---------------------
*  The Fund has no knowledge as to whether all or any portion of the shares of 
   the class owned of record are also owned beneficially.

** A shareholder who holds more than 25% of the outstanding shares of a class 
   may be presumed to be in "control" of such class of shares, as defined in the
   1940 Act.

                                      15
<PAGE>
 
CASH MANAGEMENT CLASS
- ---------------------

          AIM provided the initial capitalization of the Cash Management Class
of the Liquid Assets Portfolio and, accordingly, as of the date of this
Statement of Additional Information, owned all the outstanding shares of common
stock of the Cash Management Class of the Liquid Assets Portfolio.  Although the
Cash Management Class of the Liquid Assets Portfolio expects that the sale of
its shares to the public pursuant to the Prospectus will reduce the percentage
of such shares owned by AIM to less than 1% of the total shares outstanding, as
long as AIM owns over 25% of the shares of the Cash Management Class of the
Liquid Assets Portfolio that are outstanding, it may be presumed to be in
"control" of the Cash Management Class of the Liquid Assets Portfolio, as
defined in the 1940 Act.

          To the best of the knowledge of the Fund, as of October 25, 1995,  the
directors and officers of the Fund beneficially owned less than 1% of any
portfolio's outstanding shares.


                           PURCHASES AND REDEMPTIONS

NET ASSET VALUE DETERMINATION

          Shares of the Class are sold at the net asset value of such shares.
Shareholders may at any time redeem all or a portion of their shares at net
asset value. The investor's price for purchases and redemptions will be the net
asset value next determined following the receipt of an order to purchase or a
request to redeem shares.

          The valuation of the portfolio instruments based upon their amortized
cost and the concomitant maintenance of the net asset value per share of $1.00
for the Portfolio is permitted in accordance with applicable rules and
regulations of the SEC, including Rule 2a-7 under the 1940 Act, which require
the Portfolio to adhere to certain conditions. These rules require that the
Portfolio maintain a dollar-weighted average portfolio maturity of 90 days or
less, purchase only instruments having remaining maturities of 397 calendar days
or less and invest only in securities determined by the Board of Directors to be
"Eligible Securities" and to present minimal credit risk to the Portfolio.

          The Board of Directors is required to establish procedures designed to
stabilize, to the extent reasonably practicable, the Portfolio's price per share
at $1.00 as computed for the purpose of sales and redemptions. Such procedures
include review of the Portfolio's holdings by the Board of Directors, at such
intervals as they may deem appropriate, to determine whether the net asset value
calculated by using available market quotations or other reputable sources for
the Portfolio deviates from $1.00 per share and, if so, whether such deviation
may result in material dilution or is otherwise unfair to existing holders of
the shares. In the event the Board of Directors determines that such a deviation
exists, it will take such corrective action as the Board of Directors deems
necessary and appropriate, including the sales of portfolio instruments prior to
maturity to realize capital gains or losses or to shorten the average portfolio
maturity; the withholding of dividends; redemption of shares in kind; or the
establishment of a net asset value per share by using available market
quotations.

THE DISTRIBUTION AGREEMENT

          The Fund has entered into a Master Distribution Agreement dated as of
October 18, 1993 (the "Distribution Agreement") with FMC, a registered broker-
dealer and a wholly-owned subsidiary of AIM, to act as the exclusive distributor
of the shares of the Class.  The address of FMC is 11 Greenway Plaza, Suite
1919, Houston, Texas 77046-1173. See "General Information about the Fund --
Directors and Officers" and "General Information about the Fund -- Investment
Advisor" for information as to the affiliation of certain directors and officers
of the Fund with FMC, AIM and AIM Management.

                                      16
<PAGE>
 
          The Distribution Agreement provides that FMC has the exclusive right
to distribute shares either directly or through other broker-dealers. The
Distribution Agreement also provides that FMC will pay promotional expenses,
including the incremental costs of printing prospectuses and statements of
additional information, annual reports and other periodic reports for
distribution to persons who are not shareholders of the Portfolio and the costs
of preparing and distributing any other supplemental sales literature. FMC has
not undertaken to sell any specified number of shares of the Class.

          The Distribution Agreement will continue in effect until June 30, 1996
and from year to year thereafter, provided that it is specifically approved at
least annually by the Fund's Board of Directors and the affirmative vote of the
directors who are not parties to the Distribution Agreement or "interested
persons" of any such party by votes cast in person at a meeting called for such
purpose.  The Fund or FMC may terminate the Distribution Agreement on 60 days'
written notice, without penalty. The Distribution Agreement will terminate
automatically in the event of its "assignment," as defined in the 1940 Act.

DISTRIBUTION PLAN

          The Fund has adopted a Master Distribution Plan (the "Plan") pursuant
to Rule 12b-1 under the 1940 Act.  Pursuant to the Plan, the Fund may enter into
Shareholder Service Agreements ("Service Agreements") with selected broker-
dealers, banks, other financial institutions or their affiliates.  Such firms
may receive compensation from the Portfolio for servicing investors as
beneficial owners of the shares of the Class.  These services may include among
other things: (i) answering customer inquiries regarding shares of the Class and
the Portfolio; (ii) assisting customers in changing dividend options, account
designations and addresses; (iii) performing sub-accounting; (iv) establishing
and maintaining shareholder accounts and records; (v) processing purchase and
redemption transactions; (vi) automatic investment of customer cash accounting
balances in shares of the Class; (vii) providing periodic statements showing a
customer's account balance and integrating such statements with those of other
transactions and balances in the customer's other accounts serviced by such
firm; (viii) arranging for bank wires; and (ix) such other services as the Fund
may request on behalf of the Class, to the extent such firms are permitted to
engage in such services by applicable statute, rule or regulation.  The Plan may
only be used for the purposes specified above and as stated in the Plan.
Expenses may not be carried over from year to year.

          FMC is a wholly-owned subsidiary of AIM, which is a wholly-owned
subsidiary of AIM Management.  Charles T. Bauer, a Director and Chairman of the
Fund and Robert H. Graham, a Director and President of the Fund, own shares of
AIM Management.

BANKING REGULATIONS

          The Glass-Steagall Act and other applicable laws or regulations among
other things, generally prohibit federally chartered or supervised banks from
engaging in the business of underwriting, selling or distributing securities,
but permit banks to make shares of mutual funds available to their customers and
to perform administrative and shareholder servicing functions.  However,
judicial or administrative decisions or interpretations of such laws, as well as
changes in either federal or state statutes or regulations relating to the
permissible activities of banks or their subsidiaries or affiliates, could
prevent a bank from continuing to perform all or a part of its servicing
activities.  If a bank were prohibited from so acting, shareholder clients of
such bank would be permitted to remain shareholders of the Fund and alternate
means for continuing the servicing of such shareholders would be sought.  In
such event, changes in the operation of the Fund might occur and shareholders
serviced by such bank might no longer be able to avail themselves of any
automatic investment or other services then being provided by such bank.  It is
not expected that shareholders would suffer any adverse financial consequences
as a result of any of these occurrences.

          In addition, state securities laws on this issue may differ from the
interpretations of federal law expressed herein and certain banks and financial
institutions may be required to register as dealers pursuant to state law.

                                      17
<PAGE>
 
          In order to permit the sale of the Fund's shares in certain states,
the Fund may from time to time make commitments more restrictive than the
restrictions described herein. These restrictions are not matters of fundamental
policy, and should the Fund determine that any such commitment is no longer in
the best interests of the Fund and its shareholders, it will revoke the
commitment by terminating sales of its shares in the states involved.

PERFORMANCE INFORMATION

          As stated under the caption "Yield Information" in the Prospectus,
yield information for the shares of the Class may be obtained by calling the
Fund at (800) 877-7745. The current yield quoted will be the net average
annualized yield for an identified period.  Current yield will be computed by
assuming that an account was established with a single share (the "Single Share
Account") on the first day of the period. To arrive at the quoted yield, the net
change in the value of that Single Share Account for the period (which would
include dividends accrued with respect to the share, and dividends declared on
shares purchased with dividends accrued and paid, if any, but would not include
realized gains and losses or unrealized appreciation or depreciation) will be
multiplied by 365 and then divided by the number of days in the period, with the
resulting figure carried to the nearest hundredth of one percent. The Portfolio
may also furnish a quotation of effective yield that assumes the reinvestment of
dividends for a 365-day year and a return for the entire year equal to the
average annualized yield for the period, which will be computed by compounding
the unannualized current yield for the period by adding 1 to the unannualized
current yield, raising the sum to a power equal to 365 divided by the number of
days in the period, and then subtracting 1 from the result.

          The Portfolio may compare the performance of the Class or the
performance of securities in which it may invest to:

          .  IBC/Donoghue's Money Fund Averages, which are average yields of
various types of money market funds that include the effect of compounding
distributions;

          .  other mutual funds, especially those with similar investment
objectives. These comparisons may be based on data published by IBC/Donoghue's
Money Fund Report(R) of Holliston, Massachusetts  or by Lipper Analytical
Services, Inc., a widely recognized independent service located in Summit, New
Jersey, which monitors the performance of mutual funds;

          .  yields on other money market securities or averages of other money
market securities as reported by the Federal Reserve Bulletin, by TeleRate, a
financial information network, or by Bloomberg, a financial information firm;
and

          . other fixed-income investments such as Certificates of Deposit
("CDs").

          The principal value and interest rate of CDs and money market
securities are fixed at the time of purchase whereas the Class' yield will
fluctuate. Unlike some CDs and certain other money market securities, money
market mutual funds are not insured by the FDIC. Investors should give
consideration to the quality and maturity of the portfolio securities of the
respective investment companies when comparing investment alternatives.

          The Portfolio may reference the growth and variety of money market
mutual funds and AIM's innovation and participation in the industry.

REDEMPTIONS IN KIND

          The Fund will not redeem shares representing an interest in the
Portfolio in kind (i.e., by distributing its portfolio securities).

                                      18
<PAGE>
 
SUSPENSION OF REDEMPTION RIGHTS

     The right of redemption may be suspended or the date of payment upon
redemption may be postponed when (a) trading on the New York Stock Exchange is
restricted, as determined by applicable rules and regulations of the SEC, (b)
the New York Stock Exchange is closed for other than customary weekend or
holiday closings, (c) the SEC has by order permitted such suspension, or (d) an
emergency as determined by the SEC exists making disposition of portfolio
securities or the valuation of the net assets of the Portfolio not reasonably
practicable.


                      INVESTMENT PROGRAM AND RESTRICTIONS

     The Portfolio may lend its portfolio securities in amounts up to 33-1/3% of
its total assets to financial institutions in accordance with the investment
restrictions of the Portfolio.  Such loans would involve risks of delay in
receiving additional collateral in the event the value of the collateral
decreased below the value of the securities loaned or of delay in recovering the
securities loaned or even loss of rights in the collateral should the borrower
of the securities fail financially.  However, loans will be made only to
borrowers deemed by AIM to be of good standing and only when, in AIM's judgment,
the income to be earned from the loans justifies the attendant risks.

ELIGIBLE SECURITIES

     Rule 2a-7 under the 1940 Act, which governs the operations of money market
funds, defines an "Eligible Security" as follows:

          (i) a security with a remaining maturity of 397 days or less that is
     rated (or that has been issued by an issuer that is rated with respect to a
     class of short-term debt obligations, or any security within that class,
     that is comparable in priority and security with the security) by the
     Requisite NRSROs1 in one of the two highest rating categories for short-
     term debt obligations (within which there may be sub-categories or
     gradations indicating relative standing); or

          (ii) a security:

               (A) that at the time of issuance was a long-term security but
          that has a remaining maturity of 397 calendar days or less, and

               (B) whose issuer has received from the Requisite NRSROs a rating,
          with respect to a class of short-term debt obligations (or any
          security within that class) that is now comparable in priority and
          security with the security, in one of the two highest rating
          categories for short-term debt obligations (within which there may be
          sub-categories or gradations indicating relative standing); or

- ---------------------
1 "Requisite NRSRO" means (a) any two nationally recognized statistical rating
  organizations that have issued a rating with respect to a security or class
  of debt obligations of an issuer, or (b) if only one NRSRO has issued a
  rating with respect to such security or issuer of such security, that NRSRO.
  At present the NRSROs are: Standard & Poor's Corp., Moody's Investors
  Service, Inc., Duff and Phelps, Inc., Fitch Investors Services, Inc. and,
  with respect to certain types of securities, IBCA Limited and its affiliate,
  IBCA Inc. Subcategories or gradations in ratings (such as a "+" or "-") do
  not count as rating categories.

                                      19
<PAGE>
 
          (iii) an unrated security2 that is of comparable quality to a
     security meeting the requirements of paragraphs (a)(5)(i) or (ii) of this
     section, as determined by the money market fund's board of directors;
     provided, however, that:

               (A) the board of directors may base its determination that a
          standby commitment is an Eligible Security upon a finding that the
          issuer of the commitment presents a minimal risk of default; and

               (B) a security that at the time of issuance was a long-term
          security but that has a remaining maturity of 397 calendar days or
          less and that is an unrated security is not an Eligible Security if
          the security has a long-term rating from any NRSRO that is not within
          the NRSRO's two highest categories (within which there may be sub-
          categories or gradations indicating relative standing).

COMMERCIAL PAPER RATINGS

     The following is a description of the factors underlying the commercial
paper ratings of Moody's, S&P and Fitch Investors Service, Inc. ("Fitch").

     MOODY'S -- The rating Prime-1 (P-1) is the highest commercial paper rating
assigned by Moody's. Among the factors considered by Moody's in assigning
ratings are the following: (1) evaluation of the management of the issuer; (2)
economic evaluation of the issuer's industry or industries and an appraisal of
speculative-type risks which may be inherent in certain areas; (3) evaluation of
the issuer's products in relation to competition and customer acceptance; (4)
liquidity; (5) amount and quality of long-term debt; (6) trend of earnings over
a period of ten years; (7) financial strength of a parent company and the
relationship which exists with the issuer; and (8) recognition by the management
of obligations which may be present or may arise as a result of public interest
questions and preparations to meet such obligations. These factors are all
considered in determining whether the commercial paper is rated P-1, P-2 or P-3.

     S&P -- Commercial paper rated A-1 by S&P has the following characteristics.
Liquidity ratios are adequate to meet cash requirements. Long-term senior debt
is rated "A" or better, although in some cases "BBB" credits may be allowed. The
issuer has access to at least two additional channels of borrowing. Basic
earnings and cash flow have an upward trend with allowance made for unusual
circumstances. Typically, the issuer's industry is well established and the
issuer has a strong position within the industry. The reliability and quality of
management is unquestioned. The relative strength or weakness of the above
factors determine whether the issuer's commercial paper is rated A-1, A-2 or
A-3.

     FITCH -- Fitch's short-term ratings apply to debt obligations that are
payable on demand or have original maturities of generally up to three years,
including commercial paper, certificates of deposit, medium-term notes, and
municipal and investment notes.  The short-term rating places greater emphasis
than a long-term rating on the existence of liquidity necessary to meet the
issuer's obligations in a timely manner.  Fitch short-term ratings are as
follows:

- ---------------------
2  An "unrated security" is a security (i) issued by an issuer that does not
   have a current short-term rating from any NRSRO, either as to the
   particular security or as to any other short-term obligations of comparable
   priority and security; (ii) that was a long-term security at the time of
   issuance and whose issuer has not received from any NRSRO a rating with
   respect to a class of short-term debt obligations now comparable in
   priority and security; or (iii) a security that is rated but which is the
   subject of an external credit support agreement not in effect when the
   security was assigned its rating, provided that a security is not an
   unrated security if any short-term debt obligation issued by the issuer and
   comparable in priority and security is rated by any NRSRO.

                                      20
<PAGE>
 
                                      F-1

     Exceptionally Strong Credit Quality.  Issues assigned this rating are
regarded as having the strongest degree of assurance for timely payment.

                                      F-2

     Very Strong Credit Quality.  Issues assigned this rating reflect an
assurance of timely payment only slightly less in degree than issues rated
"F-1."

                             PLUS(+) AND MINUS (-)

     Plus and minus signs are used with a rating symbol to indicate the relative
position of a credit within the rating category.

                                      LOC

     The symbol LOC indicates that the rating is based on a letter of credit
issued by a commercial bank.

BOND RATINGS

     The following is a description of the factors underlying the bond ratings
of Moody's, S&P and Fitch.

     MOODY'S -- The following are the two highest bond ratings of Moody's.

                                      Aaa

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

                                       Aa
                                        
     Bonds which are rated Aa are judged to be of high quality by all standards.
Together with the Aaa group they comprise what are generally known as high grade
bonds. They are rated lower than the best bonds because margins of protection
may not be as large as Aaa securities or fluctuation of protective elements may
be of greater amplitude or there may be other elements present which make the
long term risks appear somewhat larger than in Aaa securities.

     S&P -- The following are the four highest bond ratings of S&P; the lower
two of which are referred to in the foregoing description of its commercial
paper ratings.

                                      AAA

     Bonds rated AAA are the highest grade obligations. They possess the
ultimate degree of protection as to principal and interest. Market values of
bonds rated AAA move with interest rates, and hence provide the maximum safety
on all counts.

                                      21
<PAGE>
 
                                      AA

     Bonds rated AA also qualify as high grade obligations, and in the majority
of instances differ from AAA issues only in small degree. Here, too, prices move
with the long-term money market.

                                       A

     Bonds rated A are regarded as upper medium grade. They have considerable
investment strength but are not entirely free from adverse effects of changes in
economic and trade conditions. Interest and principal are regarded as safe. They
predominantly reflect money rates in their market behavior, but to some extent,
also economic conditions.

                                      BBB
                                        
     The BBB, or medium grade category, is borderline between definitely sound
obligations and those where the speculative element begins to predominate. These
bonds have adequate asset coverage and normally are protected by satisfactory
earnings. Their susceptibility to changing conditions, particularly to
depressions, necessitates constant watching. Market values of these bonds are
more responsive to business and trade conditions than to interest rates. This
group is the lowest which qualifies for commercial bank investment.

     FITCH - Fitch investment grade bond ratings provide a guide to investors in
determining the credit risk associated with a particular security.  The ratings
represent Fitch's assessment of the issuer's ability to meet the obligations of
a specific debt issue or class of debt in a timely manner.

     The rating takes into consideration special features of the issue, its
relationship to other obligations of the issuer, the current and prospective
financial condition and operating performance of the issuer and any guarantor,
as well as the economic and political environment that might affect the issuer's
future financial strength and credit quality.

     Fitch ratings do not reflect any credit enhancement that may be provided by
insurance policies or financial guaranties unless otherwise indicated.

     Bonds that have the same rating are of similar but not necessarily
identical credit quality since the rating categories do not fully reflect small
differences in the degrees of credit risk.

     Fitch ratings are not recommendations to buy, sell or hold any security.
Ratings do not comment on the adequacy of market price, the suitability of any
security for a particular investor, or the tax-exempt nature or taxability of
payments made in respect of any security.

     Fitch ratings are based on information obtained from issuers, other
obligors, underwriters, their experts, and other sources Fitch believes to be
reliable.  Fitch does not audit or verify the truth or accuracy of such
information.  Ratings may be changed, suspended, or withdrawn as a result of
changes in, or the unavailability of, information or for other reasons.

                                      AAA

     Bonds rated AAA are considered to be investment grade and of the highest
credit quality.  The obligor has an exceptionally strong ability to pay interest
and repay principal, which is unlikely to be affected by reasonably foreseeable
events.

                                      22
<PAGE>
 
                                      AA

     Bonds rated AA are considered to be investment grade and of very high
credit quality.  The obligor's ability to pay interest and repay principal is
very strong, although not quite as strong as bonds rated "AAA."  Because bonds
rated in the "AAA" and "AA" categories are not significantly vulnerable to
foreseeable future developments, short-term debt of these issuers is generally
rated "F-1."

REPURCHASE AGREEMENTS

     Rule 2a-7 under the 1940 Act provides that a money market fund shall not
invest more than five percent of its total assets in securities issued by the
issuer of the security, provided that such a fund may invest more than five
percent of its total assets in the First Tier securities of a single issuer for
a period of up to three business days after the purchase thereof if the money
market fund is a diversified investment company, provided further, that the fund
may not make more than one investment in accordance with the foregoing proviso
at any time.  Under Rule 2a-7, for purposes of determining the percentage of a
fund's total assets that are invested in securities of an issuer, a repurchase
agreement shall be deemed to be an acquisition of the underlying securities,
provided that the obligation of the seller to repurchase the securities from the
money market fund is fully collateralized.  To be fully collateralized, the
collateral must, among other things, consist entirely of U.S. Government
securities or securities that, at the time the repurchase agreement is entered
into, are rated in the highest rating category by Requisite NRSROs.

INVESTMENT RESTRICTIONS

     As a matter of fundamental policy which may not be changed without the
approval of a majority of the outstanding shares of the Portfolio (as that term
is defined under "General Information about the Fund -- The Fund and its
Shares"), the Portfolio may not:

          (1) concentrate 25% or more of the value of its total assets in the
     securities of one or more issuers conducting their principal business
     activities in the same industry, provided that there is no limitation with
     respect to investments in obligations issued or guaranteed by the U.S.
     Government, its agencies or instrumentalities and bank instruments, such as
     CDs, bankers' acceptances, time deposits and bank repurchase agreements;

          (2) purchase securities of any one issuer (other than obligations of
     the U.S. Government, its agencies or instrumentalities) if, immediately
     after such purchase, more than 5% of the value of the Portfolio's total
     assets would be invested in such issuer, except as permitted by Rule 2a-7
     under the 1940 Act, as amended from time to time;

          (3) borrow money or issue senior securities except (a) for temporary
     or emergency purposes (e.g., in order to facilitate the orderly sale of
     portfolio securities or to accommodate abnormally heavy redemption
     requests), the Portfolio may borrow money from banks or obtain funds by
     entering into reverse repurchase agreements, and (b) to the extent that
     entering into commitments to purchase securities in accordance with the
     Portfolio's investment program may be considered the issuance of senior
     securities, provided that the Portfolio will not purchase portfolio
     securities while borrowings in excess of 5% of its total assets are
     outstanding;

          (4) mortgage, pledge or hypothecate any assets except to secure
     permitted borrowings and except for reverse repurchase agreements and then
     only in an amount up to 331/3% of the value of its total assets at the
     time of borrowing or entering into a reverse repurchase agreement;

          (5) make loans of money or securities other than (a) through the
     purchase of debt securities in accordance with the Portfolio's investment
     program, (b) by entering into repurchase agreements and (c) by lending
     portfolio securities to the extent permitted by law or regulation;

                                      23
<PAGE>
 
          (6) underwrite securities issued by any other person, except to the
     extent that the purchase of securities and the later disposition of such
     securities in accordance with the Portfolio's investment program may be
     deemed an underwriting;

          (7) invest in real estate, except that the Portfolio may purchase and
     sell securities secured by real estate or interests therein or issued by
     issuers which invest in real estate or interests therein;

          (8) purchase or sell commodities or commodity futures contracts,
     purchase securities on margin, make short sales or invest in puts or calls;

          (9) invest in any obligation not payable as to principal and interest
     in United States currency; or

          (10) Acquire for value the securities of any other investment company,
     except in connection with a merger, consolidation, reorganization or
     acquisition of assets and except for the investment in such securities of
     funds representing compensation otherwise payable to its directors pursuant
     to any deferred compensation plan existing at any time between the Fund and
     its directors.

     The following investment policies and restrictions are not fundamental
policies and may be changed by the Board of Directors of the Fund without
shareholder approval.  The Portfolio does not intend to invest in companies for
the purpose of exercising control or management.

     State Law Restrictions  The Fund may, from time to time in order to qualify
shares of the Portfolio for sale in a particular state, agree to certain
investment restrictions in addition to or more stringent than those set forth
above.  Such restrictions are not fundamental and may be changed without the
approval of shareholders.  Pursuant to an undertaking made to the State
Securities Board of Texas, the Portfolio (i) will not invest in limited
partnership interests in real property, and (ii) will not issue any class of
senior security or borrow money unless immediately after such issuance or
borrowing there is asset coverage of at least 300%.

 
                             PORTFOLIO TRANSACTIONS

     AIM is responsible for decisions to buy and sell securities for the
Portfolio, for selection of broker-dealers and for negotiation of commission
rates. Since purchases and sales of portfolio securities by the Portfolio are
usually principal transactions, the Portfolio incurs little or no brokerage
commissions. Portfolio securities are normally purchased directly from the
issuer or from a market maker for the securities. The purchase price paid to
dealers serving as market makers may include a spread between the bid and asked
prices. The Portfolio may also purchase securities from underwriters at prices
which include a commission paid by the issuer to the underwriter.

     The Portfolio does not seek to profit from short-term trading, and will
generally (but not always) hold portfolio securities to maturity, but AIM may
seek to enhance the yield of the Portfolio by taking advantage of yield
disparities or other factors that occur in the money market. For example, market
conditions frequently result in similar securities trading at different prices.
AIM may dispose of any portfolio security prior to its maturity if such
disposition and reinvestment of proceeds are expected to enhance yield
consistent with AIM's judgment as to desirable portfolio maturity structure or
if such disposition is believed to be advisable due to other circumstances or
conditions. The amortized cost method of valuing portfolio securities requires
that the Portfolio maintain an average weighted portfolio maturity of ninety
days or less. Thus, there is likely to be relatively high portfolio turnover,
but since brokerage commissions are not normally paid on money

                                      24
<PAGE>
 
market instruments, the high rate of portfolio turnover is not expected to have
a material effect on the net income or expenses of the Portfolio.

     AIM's primary consideration in effecting a security transaction is to
obtain the best net price and the most favorable execution of the order. To the
extent that the execution and prices offered by more than one dealer are
comparable, AIM may, in its discretion, effect transactions with dealers that
furnish statistical, research or other information or services which are deemed
by AIM to be beneficial to the Portfolio's investment program. Certain research
services furnished by dealers may be useful to AIM with clients other than the
Portfolio. Similarly, any research services received by AIM through placement of
portfolio transactions of other clients may be of value to AIM in fulfilling its
obligations to the Portfolio. AIM is of the opinion that the material received
is beneficial in supplementing AIM's research and analysis; and therefore, it
may benefit the Portfolio by improving the quality of AIM's investment advice.
The advisory fees paid by the Portfolio are not reduced because AIM receives
such services.

     From time to time,  the Fund may sell a security to, or purchase a security
from, an AIM Fund or another investment account advised by AIM or A I M Capital
Management, Inc. ("AIM Capital"),  when such transactions comply with applicable
rules and regulations and are deemed consistent with the investment objective(s)
and policies of the investment accounts advised by AIM or AIM Capital.
Procedures pursuant to Rule 17a-7 under the 1940 Act regarding transactions
between investment accounts advised by AIM or AIM Capital have been adopted by
the Boards of Directors/Trustees of the various AIM Funds, including the Fund.
Although such transactions may result in custodian, tax or other related
expenses, no brokerage commissions or other direct transaction costs are
generated by transactions among the investment accounts advised by AIM or AIM
Capital.

     Provisions of the 1940 Act and rules and regulations thereunder have been
construed to prohibit the Fund from purchasing securities or instruments from,
or selling securities or instruments to, any holder of 5% or more of the voting
securities of any investment company managed or advised by AIM.  The Fund has
obtained an order of exemption from the SEC which permits the Fund to engage in
certain transactions with such 5% holder, if the Fund complies with conditions
and procedures designed to ensure that such transactions are executed at fair
market value and present no conflicts of interest.

     AIM and its affiliates manage several other investment accounts, some of
which may have objectives similar to the Portfolio's.  It is possible that at
times identical securities will be acceptable for one or more of such investment
accounts. However, the position of each account in the securities of the same
issue may vary and the length of time that each account may choose to hold its
investment in the securities of the same issue may likewise vary.  The timing
and amount of purchase by each account will also be determined by its cash
position. If the purchase or sale of securities is consistent with the
investment policies of the Portfolio and one or more of these accounts is
considered at or about the same time, transactions in such securities will be
allocated in good faith among such accounts, in accordance with applicable laws
and regulations, in order to obtain the best net price and most favorable
execution. The allocation and combination of simultaneous securities purchases
on behalf of the Portfolio will be made in the same way that such purchases are
allocated among or combined with those of other AIM accounts. Simultaneous
transactions could adversely affect the ability of the Portfolio to obtain or
dispose of the full amount of a security which it seeks to purchase or sell.

     Under the 1940 Act, persons affiliated with the Fund are prohibited from
dealing with the Portfolio as a principal in any purchase or sale of securities
unless an exemptive order allowing such transactions is obtained from the SEC.
Furthermore, the 1940 Act prohibits the Fund from purchasing a security being
publicly underwritten by a syndicate of which persons affiliated with the Fund
are members except in accordance with certain conditions.  These conditions may
restrict the ability of the Portfolio to purchase  money market obligations
being publicly underwritten by such a syndicate, and the Portfolio may be
required to wait until the syndicate has been terminated before buying such
securities.  At such time, the market price of the securities may be higher or
lower than the original offering price.  A person affiliated with the Fund

                                      25
<PAGE>
 
may, from time to time, serve as placement agent or financial advisor to an
issuer of money market obligatons and be paid a fee by such issuer. The
Portfolio may purchase such money market obligatons directly from the issuer,
provided that the purchase is made in accordance with procedures adopted by the
Fund's Board of Directors and such purchase is reviewed at least quarterly by
the Fund's Board of Directors and a determination is made that all such
purchases were effected in compliance with such procedures, including a
determination that the placement fee or other remuneration paid by the issuer to
the person affiliated with the Fund was fair and reasonable in relation to the
fees charged by others performing similar services. During the fiscal year ended
August 31, 1995, no securities or instrument were purchased by the Portfolio
from issuers who paid placement fees or other compensation to a broker
affiliated with the Portfolio.


                                  TAX MATTERS

     The following is only a summary of certain additional tax considerations
generally affecting the Portfolio and its shareholders that are not described in
the Prospectus.  No attempt is made to present a detailed explanation of the tax
treatment of the Portfolio or its shareholders, and the discussion here and in
the Prospectus is not intended as a substitute for careful planning.

QUALIFICATION AS A REGULATED INVESTMENT COMPANY

     The Portfolio has elected to be taxed as a regulated investment company
under Subchapter M of the Internal Revenue Code of 1986, as amended (the
"Code").  As a regulated investment company, the Portfolio is not subject to
federal income tax on the portion of its net investment income (i.e., taxable
interest, dividends and other taxable ordinary income, net of expenses) and
capital gain net income (i.e., the excess of capital gains over capital losses)
that it distributes to shareholders, provided that it distributes at least 90%
of its investment company taxable income (i.e., net investment income and the
excess of net short-term capital gain over net long-term capital loss) for the
taxable year (the "Distribution Requirement"), and satisfies certain other
requirements of the Code that are described below.  Distributions by the
Portfolio made during the taxable year or, under specified circumstances, within
twelve months after the close of the taxable year, will be considered
distributions of income and gains for the taxable year and can therefore satisfy
the Distribution Requirement.

     In addition to satisfying the Distribution Requirement, a regulated
investment company must (1) derive at least 90% of its gross income from
dividends, interest, certain payments with respect to securities loans, gains
from the sale or other disposition of stock or securities or foreign currencies
(to the extent such currency gains are directly related to the regulated
investment company's principal business of investing in stock or securities) and
other income (including but not limited to gains from options, futures or
forward contracts) derived with respect to its business of investing in such
stock, securities or currencies (the "Income Requirement"); and (2) derive less
than 30% of its gross income (exclusive of certain gains on designated hedging
transactions that are offset by realized or unrealized losses on offsetting
positions) from the sale or other disposition of stock, securities or foreign
currencies (or of options, futures or forward contracts thereon) held for less
than three months (the "Short-Short Gain Test").  However, foreign currency
gains, including those derived from options, futures and forward contracts, will
not be characterized as Short-Short Gains if they are directly related to the
regulated investment company's principal business of investing in stock or
securities (or in options or futures thereon).  Because of the Short-Short Gain
Test, a fund may have to limit the sale of appreciated securities that it has
held for less than three months.  However, the Short-Short Gain Test will not
prevent a fund from disposing of investments at a loss, since the recognition of
a loss before the expiration of the three-month holding period is disregarded.
Interest (including original issue discount) received by a fund at maturity or
upon the disposition of a security held for less than three months will not be
treated as gross income derived from the sale or other disposition of a security
within the meaning of the Short-Short Gain Test.  However, income that is
attributable to realized market appreciation will be treated as gross income
from the sale or other disposition of securities for this purpose.

                                      26
<PAGE>
 
     In addition to satisfying the requirements described above, a regulated
investment company must satisfy an asset diversification test in order to
qualify for tax purposes as a regulated investment company.  Under this test, at
the close of each quarter of a fund's taxable year, at least 50% of the value of
a fund's assets must consist of cash and cash items, U.S. Government securities,
securities of other regulated investment companies, and securities of other
issuers (as to which a fund has not invested more than 5% of the value of a
fund's total assets in securities of such issuer and as to which a fund does not
hold more than 10% of the outstanding voting securities of such issuer), and no
more than 25% of the value of its total assets may be invested in the securities
of any other issuer (other than U.S. Government securities and securities of
other regulated investment companies), or in two or more issuers which a fund
controls and which are engaged in the same or similar trades or businesses.

     If, for any taxable year the Portfolio does not qualify as a regulated
investment company, all of its taxable income (including its net capital gain)
will be subject to tax at regular corporate rates without any deduction for
distributions to shareholders, and such distributions will be taxable as
ordinary dividends to the extent of the Portfolio's current and accumulated
earnings and profits.  Such distributions generally will be eligible for the
dividends received deduction in the case of corporate shareholders.

EXCISE TAX ON REGULATED INVESTMENT COMPANIES

     A 4% non-deductible excise tax is imposed on a regulated investment company
that fails to distribute in each calendar year an amount equal to 98% of
ordinary taxable income for the calendar year and 98% of capital gain net income
for the one-year period ended on October 31 of such calendar year (or, at the
election of a regulated investment company having a taxable year ending November
30 or December 31, for its taxable year).  The balance of such income must be
distributed during the next calendar year.  For the foregoing purposes, a
regulated investment company is treated as having distributed any amount on
which it is subject to income tax for any taxable year ending in such calendar
year.

     The Portfolio intends to make sufficient distributions or deemed
distributions of its ordinary taxable income and capital gain net income prior
to the end of each calendar year to avoid liability for the excise tax.
However, investors should note that the Portfolio may in certain circumstances
be required to liquidate portfolio investments to make sufficient distributions
to avoid excise tax liability.

PORTFOLIO DISTRIBUTIONS

     The Portfolio anticipates distributing substantially all of its investment
company taxable income for each taxable year.  Such distributions will be
taxable to shareholders as ordinary income and treated as dividends for federal
income tax purposes, but they will not qualify for the 70% dividends received
deduction for corporations.

     Distributions by the Portfolio will be treated in the manner described
above regardless of whether such distributions are paid in cash or reinvested in
additional shares of the Portfolio.  Shareholders receiving a distribution in
the form of additional shares will be treated as receiving a distribution in an
amount equal to the fair market value of the shares received, determined as of
the reinvestment date.

     Ordinarily, shareholders are required to take distributions by the
Portfolio into account in the year in which the distributions are made.
However, dividends declared in October, November or December of any year and
payable to shareholders of record on a specified date in such a month will be
deemed to have been received by the shareholders (and made by the Portfolio) on
December 31 of such calendar year if such dividends are actually paid in January
of the following year.

     The Portfolio will be required in certain cases to withhold and remit to
the U.S. Treasury 31% of the ordinary income dividends and capital gain
dividends and, in certain cases, the proceeds of redemption of

                                      27
<PAGE>
 
shares, paid to any shareholder (1) who has provided either an incorrect tax
identification number or no number at all, (2) who is subject to backup
withholding by the Internal Revenue Service for failure to report the receipt of
interest or dividend income properly, or (3) who has failed to certify to the
Fund that it is not subject to backup withholding or that it is a corporation or
other "exempt recipient."

EFFECT OF FUTURE LEGISLATION; LOCAL TAX CONSIDERATIONS

     The foregoing general discussion of U.S. federal income tax consequences is
based on the Code and the regulations issued thereunder as in effect on November
1, 1995.   Future legislative or administrative changes or court decisions may
significantly change the conclusions expressed herein, and any such changes or
decisions may have a retroactive effect with respect to the transactions
contemplated herein.

     Rules of state and local taxation of ordinary income dividends and capital
gain dividends from regulated investment companies often differ from the rules
for U.S. federal income taxation described above.  Shareholders are urged to
consult their tax advisors as to the consequences of these and other state and
local tax rules affecting an investment in the Portfolio.

                                      28


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