<PAGE>
<TABLE>
<CAPTION>
<S> <C>
SHORT-TERM
INVESTMENTS CO.
Prospectus
- ------------------------------------------------------------------------------------------------------------------------------------
PRIME The Prime Portfolio (the "Portfolio") is a money market fund whose investment
PORTFOLIO objective is the maximization of current income to the extent consistent with
the preservation of capital and the maintenance of liquidity. The Portfolio
CASH seeks to achieve its objective by investing in high grade money market
MANAGEMENT instruments, such as U.S. Government obligations, bank obligations, commercial
CLASS instruments and repurchase agreements. The instruments purchased by the
Portfolio will have maturities of sixty days or less.
DECEMBER 17, 1997
The Portfolio is a series portfolio of Short-Term Investments Co. (the
"Fund"), an open-end, diversified, series management investment company. This
Prospectus relates solely to the Cash Management Class of the Portfolio, a
class of shares designed to be a convenient vehicle in which institutional
customers of banks, certain broker-dealers and other financial institutions can
invest in a diversified, money-market fund.
THESE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE SECURITIES AND
EXCHANGE COMMISSION NOR HAS THE SECURITIES AND EXCHANGE 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 17, 1997, HAS BEEN FILED WITH THE UNITED
STATES SECURITIES AND EXCHANGE COMMISSION (THE "SEC") AND IS HEREBY
INCORPORATED BY REFERENCE. FOR A COPY OF THE STATEMENT OF ADDITIONAL
INFORMATION WITHOUT CHARGE, WRITE TO THE ADDRESS BELOW OR CALL (800) 877-7745.
THE SEC MAINTAINS A WEB SITE AT HTTP://WWW.SEC.GOV THAT CONTAINS THE STATEMENT
OF ADDITIONAL INFORMATION, MATERIAL INCORPORATED BY REFERENCE, AND OTHER
INFORMATION REGARDING THE FUND.
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
[LOGO APPEARS HERE] SHARE. SHARES OF THE PORTFOLIO INVOLVE INVESTMENT RISKS, INCLUDING THE POSSIBLE
Fund Management Company LOSS OF PRINCIPAL.
11 Greenway Plaza
Suite 100
Houston, TX 77046-1173
(800) 877-7745
</TABLE>
<PAGE>
SUMMARY
THE PORTFOLIO AND ITS INVESTMENT OBJECTIVE
The Fund is an open-end diversified series management investment company.
This Prospectus relates to the Cash Management Class (the "Class") of the
Portfolio. The Portfolio is a money market fund which invests in money market
instruments, such as U.S. Government obligations, bank obligations, commercial
instruments and repurchase agreements. The instruments purchased by the
Portfolio will have maturities of sixty days or less. The investment objective
of the Portfolio is the maximization of current income to the extent consistent
with the preservation of capital and the maintenance of liquidity.
Pursuant to separate prospectuses, the Fund also offers shares of other
classes of common stock of the Fund representing interests in the Portfolio:
the Institutional Class, the Private Investment Class, the Personal Investment
Class and the Resource Class. Such classes have different distribution
arrangements and are designed for institutional and other categories of
investors. The Fund also offers shares of classes of another portfolio, the
Liquid Assets 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 the "Portfolios."
All classes of the Portfolio share a common investment objective and
portfolio of investments. Shares of each class of the Portfolio have the same
net asset value (proportionate interest in the net assets of the Portfolio) and
bear equally those expenses, such as the advisory fee, that are allocated to
the Portfolio as a whole. However, different classes of the Portfolio have
different shareholder qualifications and are separately allocated certain class
expenses, such as those associated with the distribution of their shares.
Therefore, each class will have a different dividend payment and a different
yield.
INVESTORS IN THE CLASS
The Class is designed to be a convenient vehicle in which institutional
customers of banks, certain broker-dealers and other financial institutions can
invest in a diversified open-end money market fund.
PURCHASE OF SHARES
Shares of the Class that are offered hereby are sold at net asset value. The
minimum initial investment in the Class is $1,000,000. There is no minimum
amount for subsequent investments. Payment for shares of the Class purchased
must be in 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 are 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 the securities of the
Portfolio and rounds the per share net asset value to the nearest whole cent.
Accordingly, the net asset value per share of the Portfolio will normally
remain constant 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. 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 a
2
<PAGE>
separate Master 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." Under a Transfer Agency and Service Agreement, A I M
Institutional Fund Services, Inc. ("Transfer Agent"), AIM's wholly owned
subsidiary and a registered transfer agent, receives a fee for its provision of
transfer agency, dividend distribution and disbursement, and shareholder
services to the Fund. It is currently anticipated that, effective on or about
December 29, 1997, A I M Fund Services, Inc. ("Transfer Agent"), a wholly owned
subsidiary of AIM and a registered transfer agent, will become the transfer
agent to the Fund. See "General Information -- Transfer Agent and Custodian."
DISTRIBUTOR AND DISTRIBUTION PLAN
Fund Management Company ("FMC") acts as the exclusive distributor of the
shares of the Class. Pursuant to the Master Distribution Plan, the Fund may pay
up to 0.10% of the average daily net assets of the Portfolio attributable to
the shares of the 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, AIM Institutional Funds, La Familia AIM
de Fondos and La Familia AIM de Fondos and Design are registered service marks
and, aimfunds.com and Invest With Discipline are service marks of A I M
Management Group Inc.
3
<PAGE>
TABLE OF FEES AND EXPENSES
<TABLE>
<S> <C>
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 -- CASH MANAGEMENT CLASS (AS A PER-
CENTAGE OF AVERAGE NET ASSETS)
Management Fees........................................................ 0.06%
12b-1 Fees (after fee waivers)**....................................... 0.08%
Other Expenses......................................................... 0.03%
----
Total Operating Expenses --Cash Management Class**..................... 0.17%
====
</TABLE>
- ------
* Beneficial owners of shares of the Class should consider the effect of any
charges imposed by their bank or other financial institution for various
services.
** Had there been no fee waivers, 12b-1 Fees and Total Operating Expenses would
have been 0.10% and 0.19%, respectively.
EXAMPLE
An investor in the Class would pay the following expenses on a $1,000
investment, assuming (1) a 5% annual return and (2) redemption at the end of
each time period.
1 year.................................. $ 2
3 years................................. $ 5
5 years................................. $10
10 years................................. $22
The Table of Fees and Expenses 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 expense figures
are based upon actual costs and fees charged to the Class for the fiscal year
ended August 31, 1997. To the extent any service providers assume expenses of
the Class, such assumption 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 EXPENSES AND ACTUAL EXPENSES MAY BE GREATER OR LESS THAN THOSE SHOWN.
4
<PAGE>
FINANCIAL HIGHLIGHTS
Shown below are the per share data, ratios and supplemental data
(collectively "data") for the three-year period ended August 31, 1997 and for
the period June 30, 1994 (date operations commenced) through August 31, 1994.
The data has been audited by KPMG Peat Marwick LLP, independent auditors, whose
report on the financial statements and the related notes appears in the
Statement of Additional Information.
<TABLE>
<CAPTION>
JUNE 30, 1994
(COMMENCEMENT
OF
OPERATIONS)
TO AUGUST 31,
1997 1996 1995 1994
-------- -------- -------- -------------
<S> <C> <C> <C> <C>
Net asset value, beginning of
period......................... $ 1.00 $ 1.00 $ 1.00 $1.00
Income from investment
operations:
Net investment income......... 0.05 0.05 0.06 0.01
-------- -------- -------- -----
Less distributions:
Dividends from net investment
income....................... (0.05) (0.05) (0.06) (0.01)
-------- -------- -------- -----
Net asset value, end of period.. $ 1.00 $1.00 $1.00 $1.00
======== ======== ======== =====
Total return.................... 5.45% 5.55% 5.71% 4.34%(a)
======== ======== ======== =====
Ratios/Supplemental Data:
Net assets, end of period (000s
omitted)....................... $767,304 $507,247 $194,479 $372
======== ======== ======== =====
Ratio of expenses to average net
assets(b)...................... 0.17%(c) 0.17% 0.17% 0.14%(a)
======== ======== ======== =====
Ratio of net investment income
to average net assets(d)....... 5.33%(c) 5.38% 5.69% 4.26%(a)
======== ======== ======== =====
</TABLE>
- ------
(a) Annualized
(b) After fee waivers and/or expense reimbursements. Ratios of expenses to
average net assets prior to fee waivers and/or expense reimbursements were
0.19%, 0.19%, 0.32%, and 0.67% (annualized) for the periods 1997-1994,
respectively.
(c) Ratios are based on average net assets of $526,970,789.
(d) After fee waivers and/or expense reimbursements. Ratios of net investment
income to average net assets prior to fee waivers and/or expense
reimbursements were 5.31%, 5.36%, 5.54%, and 3.73% (annualized) for the
periods 1997-1994, respectively.
SUITABILITY FOR INVESTORS
The shares of the Class are intended for use primarily by institutional
customers of banks, certain broker-dealers and other financial institutions who
seek a convenient vehicle in which to invest in an open-end diversified money
market fund. It is expected that the shares of the Class may be particularly
suitable investments for corporate cash managers, municipalities or other
public entities. The minimum initial investment is $1,000,000. 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.
Investors in the shares of the Class have the opportunity to receive a
somewhat higher yield than might be obtainable through direct investment in
money market instruments, and enjoy the benefits of diversification, economies
of scale and same-day liquidity. Generally, higher interest rates can be
obtained on the purchase of very large blocks of money market instruments. Of
course, any such relative increase in interest rates may be offset to some
extent by the operating expenses of the shares of the Class. It is anticipated
that most investors will perform their own sub-accounting; however, sub-
accounting services may be arranged through the Fund for shareholders who
prefer not to perform such services.
5
<PAGE>
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 the maximization of current
income to the extent consistent with the preservation of capital and the
maintenance of liquidity. The Portfolio seeks to achieve its objective by
investing in high grade money market instruments. The money market instruments
in which the Portfolio invests are considered to carry very little risk and
accordingly may not have as high a yield as that available on money market
instruments of lesser quality. The Portfolio consists exclusively of money
market instruments which have maturities of 60 days or less from the date of
purchase (except for securities subject to repurchase agreements which may have
longer maturities), and normally does not maintain a dollar-weighted average
maturity of its portfolio securities in excess of 40 days.
INVESTMENT POLICIES
The Portfolio may invest in a broad range of government, bank and commercial
obligations and taxable municipal securities that may be available in the money
markets. Such obligations are collectively referred to as "Money Market
Obligations" and include U.S. Treasury obligations, which include Treasury
bills, notes and bonds, and repurchase agreements relating to such securities.
The Portfolio may also engage in certain investment practices described below.
The market values of the money market instruments held by the Portfolio will be
affected by changes in the yields available on similar securities. If yields
have increased since a security was purchased, the market value of such
security will generally have decreased. Conversely, if yields have decreased,
the market value of such security will generally have increased.
Money Market Obligations
The following list of descriptions illustrates the types of Money Market
Obligations in which the Portfolio intends to invest. The 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.
COMMERCIAL INSTRUMENTS. The Portfolio intends to invest in commercial
instruments, including commercial paper, master notes and other short-term
corporate instruments, that 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 ("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 Board
of Directors) to be of comparable quality to a rated security that meets the
foregoing quality standards. Commercial paper consists of short-term promissory
notes issued by corporations. Commercial paper may be traded in the secondary
market after its issuance. Master notes are demand notes that permit the
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 fluctuate based upon changes
in specified interest rates or be reset periodically according to a prescribed
formula or may be a set rate. Although there is no secondary market in master
demand notes, if such notes have a demand feature, the payee may demand payment
of the principal amount of the note upon relatively short notice.
REPURCHASE AGREEMENTS. The Portfolio intends to invest in repurchase
agreements with banks and broker-dealers pertaining to the securities described
above. 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 of a seller of a
repurchase agreement (such as the seller's failure to repurchase the obligation
in accordance with the
6
<PAGE>
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
securities eligible under Rule 2a-7 of the 1940 Act. For additional
information, see the Statement of Additional Information.
GOVERNMENT OBLIGATIONS. The Portfolio may invest in securities issued or
guaranteed as to principal and interest by the U.S. Government or by its
agencies or instrumentalities. Such obligations may be supported (a) by the
full faith and credit of the U.S. Treasury (as in the case of Government
National Mortgage Association Certificates), (b) by the right of the issuer to
borrow from the U.S. Treasury (as in the case of obligations of the Federal
Home Loan Bank), (c) by discretionary authority of the U.S. Government to
purchase certain obligations of the agency or instrumentality (as in the case
of the Federal National Mortgage Association), or (d) only by the credit of the
agency or instrumentality itself (as in the case of obligations of the Student
Loan Marketing Association). No assurance can be given that the U.S. Government
will provide financial support to such U.S. Government sponsored agencies or
instrumentalities in the future and it is not obligated to do so by law.
BANK INSTRUMENTS. The Portfolio may invest in certificates of deposit
("CDs"), time deposits and bankers' acceptances of domestic commercial banks
having total assets in excess of $1.5 billion as of the date of their most
recently published financial statements and CDs of other domestic banks that
are fully insured as to principal by the Federal Deposit Insurance Corporation.
CDs represent short-term interest-bearing deposits of commercial banks against
which negotiable certificates bearing stated rates of interest are issued.
Bankers' acceptances are short-term negotiable drafts endorsed by commercial
banks which arise primarily from international commercial transactions.
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 in excess of $1.5 billion as of the date of their
most recently published financial statements. Time deposits are non-negotiable
deposits maintained in a banking institution for a specified period of time at
a stated interest rate. The Portfolio will not make any time or savings deposit
if, immediately after making such deposit, over 5% of the Portfolio's total
assets would be invested in time and savings deposits.
Investment Practices
BORROWING MONEY/REVERSE REPURCHASE AGREEMENTS. The Portfolio may borrow money
and enter into reverse repurchase agreements with respect to its portfolio
securities in amounts up to 10% of the value of its total assets at the time of
borrowing or entering into a reverse repurchase agreement. 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, such as to facilitate the orderly sale of portfolio securities or 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. 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 by the Portfolio under the 1940 Act.
LENDING OF PORTFOLIO SECURITIES. 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.
PURCHASING DELAYED DELIVERY AND WHEN-ISSUED SECURITIES.The Portfolio may
enter into delayed delivery agreements and may purchase securities on a "when-
issued" basis.
7
<PAGE>
Delayed delivery agreements are commitments by the Portfolio to dealers or
issuers to acquire securities beyond the customary settlement date for such
securities. These commitments fix the payment price and interest rate to be
received on the investment. Delayed delivery agreements will not be used as a
speculative or leverage technique. Rather, from time to time, the Portfolio's
investment advisor can anticipate that cash for investment purposes will result
from scheduled maturities of existing portfolio instruments or from net sales
of shares of the Portfolio and may enter into delayed delivery agreements to
assure that the Portfolio will be as fully invested as possible in instruments
meeting its investment objective.
Debt securities are sometimes offered on a "when-issued" basis; that is, the
date for delivery of and payment for the securities is not fixed at the date of
purchase, but is set after the securities are issued (normally within forty-
five days after the date of the transaction). The payment obligation and the
interest rate that will be received on the securities are fixed at the time the
buyer enters into the commitment. The Portfolio will only make commitments to
purchase such debt securities with the intention of actually acquiring the
securities, but the Portfolio may sell these securities before the settlement
date if it is deemed advisable.
If the Portfolio enters into a delayed delivery agreement or purchases a
when-issued security, the Portfolio will direct its custodian bank to segregate
liquid assets (including Money Market Obligations) in an amount equal to its
delayed delivery agreements or when-issued commitments. If the market value of
such securities declines, additional cash or securities will be segregated on a
daily basis so that the market value of the account will equal the amount of
the Portfolio's delayed delivery agreements and when-issued commitments. To the
extent that funds are segregated, they will not be available for new investment
or to meet redemptions. Investment in securities on a when-issued basis and use
of delayed delivery agreements may increase the Portfolio's exposure to market
fluctuation, or may increase the possibility that the Portfolio will incur a
short-term loss, if the Portfolio must engage in portfolio transactions in
order to honor a when-issued commitment or accept delivery of a security under
a delayed delivery agreement. The Portfolio will employ techniques designed to
minimize these risks. No additional delayed delivery agreements or when-issued
commitments will be made by the Portfolio if, as a result, more than 25% of the
Portfolio's net assets would become so committed.
ILLIQUID SECURITIES. The Portfolio will invest no more than 10% of its net
assets in illiquid securities.
INVESTMENT IN OTHER INVESTMENT COMPANIES. The Portfolio may invest in other
investment companies to the extent permitted by the 1940 Act, and rules and
regulations thereunder, and, if applicable, exemptive orders granted by the
SEC.
PORTFOLIO TRANSACTIONS. The Portfolio does not seek profits through short-
term trading and will generally 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 markets. 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. Securities held by the Portfolio will be disposed of prior to
maturity if an earlier disposition is deemed desirable by AIM to meet
redemption requests. In addition, AIM will continually monitor the
creditworthiness of issuers whose securities are held by the Portfolio, and
securities held by the Portfolio may be disposed of prior to maturity as a
result of a revised credit evaluation of the issuer or other circumstances or
considerations. The Portfolio's policy of investing in securities with
maturities of sixty days or less will result in high portfolio turnover. Since
brokerage commissions are not normally paid on investments of the type made by
the Portfolio, the high turnover rate should not adversely affect the
Portfolio's net income.
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
8
<PAGE>
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 such Rule may be amended from time to time and except that the
Portfolio may purchase securities of other investment companies to the
extent permitted by applicable law or exemptive order; 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 excess of 5% of its total assets are outstanding.
The Portfolio's investment objective and the three investment restrictions of
the Portfolio 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 above, the Portfolio must also
comply with the requirements of Rule 2a-7 under the 1940 Act, as such Rule may
be amended from time to time, which govern the operations of money market
funds, and may be more restrictive than the policies described herein. 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 Transfer
Agent 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. Following the initial investment, subsequent purchases of
shares of the Class may also be made via AIM LINK--Registered Trademark--
Remote, a personal computer application software product. 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 Fund's custodian bank,
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. Further,
the Portfolio reserves the right to change the time for which purchase orders
for shares of the Cash Management Class must be submitted to and received by
the Transfer Agent for execution on the same day on any day when the U.S.
primary broker-dealer community is closed for business or trading is restricted
due to national holidays.
Shares of the Class are sold to institutional customers of banks, certain
broker-dealers and other financial institutions (individually an "Institution"
and collectively, "Institutions"). Individuals, corporations, partnerships and
other businesses that maintain qualified accounts at an Institution may invest
in the shares of the Class. Each Institution will render administrative support
services to its customers who are the beneficial owners of the shares of the
Class. Such services may include, among other things, establishment and
maintenance of shareholder accounts and records; assistance in processing
purchase and
9
<PAGE>
redemption transactions in shares of the Class; providing periodic statements
showing a customer's account balance in shares of the Class; distribution of
Fund proxy statements, annual reports and other communications to shareholders
whose accounts are serviced by the Institution; and such other services as the
Fund may reasonably request. Institutions 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.
Prior to the initial purchase of shares of the Class, an Account Application,
which can be obtained from the Transfer Agent, must be completed and sent to
the Transfer Agent, at P.O. Box 4333, Houston, Texas 77210-4333. 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 the Transfer Agent. An
investor must open an account in the shares of the Class through an Institution
in accordance with the procedures established by such Institution. Each
Institution separately determines the rules applicable to accounts in the
shares of the Class opened with it, including minimum initial and subsequent
investment requirements and the procedures to be followed by investors to
effect purchases of shares of the Class. The minimum initial investment is
$1,000,000, and there is no minimum amount for subsequent purchases of shares
of the Class by an Institution on behalf of its customers. An investor who
proposes to open a Portfolio account with an Institution should consult with a
representative of such Institution to obtain a description of the rules
governing such an account. The Institution holds shares of the Class registered
in its name, as agent for the customer, on the books of the Institution. A
statement with regard to the customer's shares of the Class is supplied to the
customer periodically, and confirmations of all transactions for the account of
the customer are provided by the Institution to the customer promptly upon
request. In addition, the Institution sends to each customer proxies, periodic
reports and other information with regard to the customer's shares of the
Class. The customer's shares of the Class are fully assignable and subject to
encumbrance by the customer.
All agreements which relate to a customer's account with an Institution are
with the Institution. An investor may terminate his relationship with an
Institution at any time, in which case an account in the investor's name will
be established directly with the Portfolio and the investor will become a
shareholder of record. In such case, however, the investor will not be able to
purchase additional shares of the Class directly, except through reinvestment
of dividends and distributions.
Orders for the purchase of shares of the Class are placed by the investor
with the Institution. The Institution is responsible for the prompt
transmission of the order to the Fund. The Portfolio will normally be required
to make immediate settlement in federal funds (member bank deposits with a
Federal Reserve Bank) for portfolio securities purchased. Accordingly, payment
for shares of the Class purchased by Institutions on behalf of their customers
must be in federal funds. If an investor's order to purchase shares of the
Class is paid for other than in federal funds, the Institution, acting on
behalf of the investor, completes the conversion into federal funds (which may
take two business days), or itself advances federal funds prior to conversion,
and promptly transmits the order and payment in the form of federal funds to
the Transfer Agent.
Subject to the conditions stated above and to the Portfolio's right to reject
any purchase order, orders will be accepted (a) when payment for shares of the
Class purchased is received by The Bank of New York, the Fund's custodian bank,
in the form described above and notice of such order is provided to the
Transfer Agent or (b) at the time the order is placed, if the Portfolio is
assured of payment.
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 must specify that it is for the purchase of
shares of the "Cash Management Class of the Prime Portfolio," otherwise any
funds received will be returned to the sending Institution.
In the interest of economy and convenience, certificates representing shares
of the Class will not be issued except upon written request. 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.
10
<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--Registered Trademark-- Remote. Normally, the net asset
value per share of the Portfolio will remain constant at $1.00. See "Net Asset
Value." Redemption requests with respect to shares of the Class for which
certificates have not been issued are normally made through a customer's
Institution.
Payment for redeemed shares of the Class is normally made by Federal Reserve
wire to the commercial bank account designated in the Institution's Account
Application, but may be remitted by check upon request by a shareholder. If a
redemption request is received by the Transfer Agent 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 Class to be
redeemed will not receive the dividend declared on the effective date of the
redemption. If a redemption request is received by the Transfer Agent 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. The Portfolio reserves the right to change the time for which
redemption requests must be submitted to and received by the Transfer Agent for
execution on the same day on any day when the U.S. primary broker-dealer
community is closed for business or trading is restricted due to national
holidays.
A shareholder may change the bank account designated to receive redemption
proceeds by written notice to the Fund. 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. Neither the Transfer
Agent nor FMC will 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 if they do not follow reasonable procedures for
verification of telephone transactions. Such reasonable procedures for
verification of telephone transactions may include recordings of telephone
transactions (maintained for six months), and mailings of confirmations
promptly after the transaction.
Payment for shares of the Class redeemed by mail and payment for telephone
redemptions in amounts of less than $1,000 may be made by check mailed within
seven days after receipt of the redemption request in proper form. The Fund 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.
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. The dividend accrued and paid for the Class will
consist of (a) income of the Portfolio, the allocation of which is based upon
the Class' pro rata share of the total outstanding shares representing an
interest in the Portfolio, less (b) Fund expenses, such as custodian fees,
directors' fees, accounting and legal expenses, based upon the Class' pro rata
share of the net assets of the Portfolio, less (c) expenses directly
attributable to the Class, such as distribution expenses, if any, and transfer
agency fees. Although realized gains and losses on the assets of the Portfolio
are reflected in its net asset value, they are not expected to be of an amount
which would affect its $1.00 per share net asset value 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.
11
<PAGE>
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 Class at the net asset value 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 Institution to the
Transfer Agent, at 11 Greenway Plaza, Suite 100, Houston, Texas 77046-1173 and
will become effective with dividends paid after its receipt by the Transfer
Agent. If a shareholder redeems all the shares of the Class 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.
The Portfolio uses its best efforts to maintain its net asset value per share
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 and cause such a shareholder to receive upon redemption a price
per share lower than the shareholder's original cost.
TAXES
The policy of the Portfolio 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 Class. 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 during January of the next year,
a shareholder will be treated for tax purposes as having received the dividend
on December 31 of 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.
The Portfolio will be treated as a separate corporation for purposes of
determining taxable income, distribution requirements and other requirements of
Subchapter M. Therefore, the Portfolio may not offset its gains against the
losses of the other portfolio of the Fund and each portfolio of the Fund 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 advisors concerning the application of
state, local or foreign taxes.
Foreign persons who file a United States tax return after December 31, 1996
for a U.S. tax refund and who are not eligible to obtain a social security
number must apply to the Internal Revenue Service ("IRS") for an individual
taxpayer identification number, using IRS Form W-7. For a copy of the IRS Form
W-7 and accompanying instructions, please contact your tax advisor or the
Transfer Agent.
12
<PAGE>
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 Fund. 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 of 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
pursuant to rules promulgated by the SEC applicable to money market funds. 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.
YIELD INFORMATION
Yield information for the Class can be obtained by calling the Fund 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 Class. 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 an investor before
making an investment in the Portfolio.
For the seven-day period ended August 31, 1997, the current yield and the
effective yield of the Class (which assumes the reinvestment of dividends for a
365-day year and a return for the entire year equal to the annualized current
yield for the period) were 5.48% and 5.63%, respectively. These yields are
quoted for illustration purposes only. The yields for any other seven-day
period may be substantially different from the yields quoted above.
To assist banks and other institutions performing their own sub-accounting,
same day information as to the daily dividend per share for the Portfolio 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 or its affiliates 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 by the Portfolio and financial statements. The annual
financial statements are audited by the Fund's independent auditors.
Each shareholder will be provided with a written confirmation by its
Institution for each transaction unless otherwise specified by the shareholder.
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 periodic 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.
13
<PAGE>
MANAGEMENT OF THE FUND
BOARD OF DIRECTORS
The overall management of the business and affairs of the Fund is vested with
its 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 Fund'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 Fund and to the general supervision of the Fund's Board of
Directors. Information concerning the Board of Directors may be found in the
Statement of Additional Information. Certain directors and officers of the Fund
are affiliated with AIM and A I M Management Group Inc. ("AIM Management"), the
parent corporation of AIM.
INVESTMENT ADVISOR
A I M Advisors, Inc., 11 Greenway Plaza, Suite 100, Houston, Texas 77046-
1173, acts as the investment advisor for the Portfolio pursuant to a Master
Investment Advisory Agreement dated as of February 28, 1997 (the "Advisory
Agreement"). AIM was organized in 1976 and, together with its subsidiaries,
manages or advises 55 investment company portfolios. AIM is a wholly owned
subsidiary of AIM Management, a holding company engaged in the financial
services business. AIM Management is an indirect wholly owned subsidiary of
AMVESCAP PLC, a publicly-traded holding company that, through its subsidiaries,
engages in the business of investment management on an international basis.
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.
For the fiscal year ended August 31, 1997, AIM received fees pursuant to the
Advisory Agreement from the Fund with respect to the Portfolio which
represented 0.06% of the Portfolio's average daily net assets. During such
fiscal year, the expenses of the Class, including AIM's fees, amounted to 0.17%
of the Class' average daily net assets.
ADMINISTRATOR
The Fund has entered into a Master Administrative Services Agreement dated as
of February 28, 1997 with AIM, pursuant to which AIM has agreed to provide or
arrange for the provision of certain accounting and other administrative
services to the Portfolio, including the services of a principal financial
officer of the Fund and related staff. As compensation to AIM for its services
under the Administrative Services Agreement, the Portfolio may reimburse AIM
for expenses incurred by AIM in connection with such services.
FEE WAIVERS
AIM or its affiliates 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 for such
fee or expenses prior to the end of each 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
February 28, 1997 (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 100, Houston, Texas 77046-1173. Certain directors and officers of
the Fund are affiliated with FMC and AIM. The Distribution Agreement provides
that FMC has the exclusive right to distribute shares of the Fund either
directly or through other broker-dealers. FMC is the distributor of several of
the mutual funds managed or advised by AIM.
14
<PAGE>
FMC may, from time to time, at its expense, pay a bonus or other
consideration or incentive to dealers or financial institutions who sell a
minimum dollar amount of the shares of the Class during a specific period of
time. In some instances, these incentives may be offered only to certain
dealers or financial 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 0.05% 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 the 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 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 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.
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 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 initially 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 July 19, 1993. 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 shareholders 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.
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.
15
<PAGE>
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.
GENERAL INFORMATION
ORGANIZATION AND DESCRIPTION OF SHARES
The Fund was incorporated in Maryland on May 3, 1993. On October 15, 1993,
the Portfolio succeeded to the assets and assumed the liabilities of the Prime
Portfolio (the "Predecessor Portfolio") of Short-Term Investments Co., a
Massachusetts business trust ("STIC"), pursuant to an Agreement and Plan of
Reorganization between the Fund and STIC. All historical financial and other
information contained in this Prospectus for periods prior to October 15, 1993
relating to the Portfolio is that of the Predecessor Portfolio. Shares of
common stock of the Fund are divided into nine classes. Five classes, including
the Class, represent interests in the Portfolio, and four classes represent
interests in the Liquid Assets 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 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. As of December
1, 1997 The Bank of New York was the owner of record of 40.75% of the
outstanding shares of the Class. As long as The Bank of New York owns over 25%
of such shares, it may be presumed to be in "control" of the Cash Management
Class of the Prime Portfolio, as defined in the 1940 Act.
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, 90 Washington Street, 11th Floor, New York, New York
10286, acts as custodian for the portfolio securities and cash of the
Portfolio. A I M Institutional Fund Services, Inc., 11 Greenway Plaza, Suite
100, Houston, Texas 77046-1173, acts as transfer agent for the shares of the
Class. It is currently anticipated that, effective on or about December 29,
1997, A I M Fund Services, Inc., a wholly owned subsidiary of AIM and a
registered transfer agent, will become the transfer agent to the Fund.
16
<PAGE>
LEGAL COUNSEL
The law firm of Ballard Spahr Andrews & Ingersoll, Philadelphia,
Pennsylvania, serves as counsel to the Fund and passes upon legal matters.
SHAREHOLDER INQUIRIES
Shareholder inquiries concerning the status of an account should be directed
to the Fund at 11 Greenway Plaza, Suite 100, 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.
17
<PAGE>
- -------------------------------------- -------------------------------------
- -------------------------------------- -------------------------------------
SHORT-TERM INVESTMENTS CO. PROSPECTUS
11 Greenway Plaza, Suite 100
Houston, Texas 77046-1173 December 17, 1997
(800) 877-7745
SHORT-TERM
INVESTMENT ADVISOR INVESTMENTS CO.
A I M ADVISORS, INC.
11 Greenway Plaza, Suite 100 ------------
Houston, Texas 77046-1173
(713) 626-1919 PRIME PORTFOLIO
DISTRIBUTOR ------------
FUND MANAGEMENT COMPANY
11 Greenway Plaza, Suite 100 CASH MANAGEMENT CLASS
Houston, Texas 77046-1173
(800) 877-7745 TABLE OF CONTENTS
AUDITORS <TABLE>
KPMG PEAT MARWICK LLP <CAPTION>
700 Louisiana PAGE
Houston, Texas 77002 ----
<S> <C>
CUSTODIAN SUMMARY........................... 2
THE BANK OF NEW YORK
90 Washington Street TABLE OF FEES AND EXPENSES........ 4
11th Floor
New York, New York 10286 FINANCIAL HIGHLIGHTS.............. 5
TRANSFER AGENT SUITABILITY FOR INVESTORS......... 5
A I M INSTITUTIONAL FUND SERVICES, INC.
11 Greenway Plaza, Suite 100 INVESTMENT PROGRAM................ 6
Houston, Texas 77046-1173
PURCHASE OF SHARES................ 9
REDEMPTION OF SHARES.............. 11
NO PERSON HAS BEEN AUTHORIZED TO GIVE DIVIDENDS......................... 11
ANY INFORMATION OR TO MAKE ANY
REPRESENTATIONS NOT CONTAINED IN THIS TAXES............................. 12
PROSPECTUS IN CONNECTION WITH THE
OFFERING MADE BY THIS PROSPECTUS, AND NET ASSET VALUE................... 13
IF GIVEN OR MADE, SUCH INFORMATION OR
REPRESENTATIONS MUST NOT BE RELIED YIELD INFORMATION................. 13
UPON AS HAVING BEEN AUTHORIZED BY THE
FUND OR THE DISTRIBUTOR. THIS REPORTS TO SHAREHOLDERS........... 13
PROSPECTUS DOES NOT CONSTITUTE AN
OFFER IN ANY JURISDICTION TO ANY MANAGEMENT OF THE FUND............ 14
PERSON TO WHOM SUCH OFFERING MAY NOT
LAWFULLY BE MADE. GENERAL INFORMATION............... 16
</TABLE>
- -------------------------------------- -------------------------------------
- -------------------------------------- -------------------------------------