AIM SERIES TRUST
485APOS, 1998-07-07
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<PAGE>
   
      AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON JULY 7, 1998
    
                                             1933 ACT REGISTRATION NO. 333-30551
                                             1940 ACT REGISTRATION NO.  811-7787
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549
                             ---------------------
 
                                   FORM N-1A
 
          REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 /X/
   
                         POST-EFFECTIVE AMENDMENT NO. 5
    
 
                                      AND
      REGISTRATION STATEMENT UNDER THE INVESTMENT COMPANY ACT OF 1940 /X/
   
                                AMENDMENT NO. 6
    
                            ------------------------
 
   
                                AIM SERIES TRUST
               (EXACT NAME OF REGISTRANT AS SPECIFIED IN CHARTER)
    
 
                        50 CALIFORNIA STREET, 27TH FLOOR
                        SAN FRANCISCO, CALIFORNIA 94111
                    (ADDRESS OF PRINCIPAL EXECUTIVE OFFICES)
              REGISTRANT'S TELEPHONE NUMBER, INCLUDING AREA CODE:
                                 (415) 392-6181
                            ------------------------
 
   
<TABLE>
<S>                               <C>                         <C>
    MICHAEL A. SILVER, ESQ.         SAMUEL D. SIRKO, ESQ.           ARTHUR J. BROWN, ESQ.
       INVESCO (NY), INC.            A I M ADVISORS, INC.          R. DARRELL MOUNTS, ESQ.
     50 CALIFORNIA STREET,            11 GREENWAY PLAZA,          KIRKPATRICK & LOCKHART LLP
           27TH FLOOR                     SUITE 100            1800 MASSACHUSETTS AVENUE, N.W.,
    SAN FRANCISCO, CA 94111          HOUSTON, TEXAS 77046                 2ND FLOOR
 (NAME AND ADDRESS OF AGENT FOR          713-626-1919               WASHINGTON, D.C. 20036
            SERVICE)                                                    (202) 778-9000
</TABLE>
    
 
                            ------------------------
 
    IT IS PROPOSED THAT THIS FILING WILL BECOME EFFECTIVE:
 
    / /  IMMEDIATELY UPON FILING PURSUANT TO PARAGRAPH (b) OF RULE 485.
 
   
    / / ON              PURSUANT TO PARAGRAPH (b) OF RULE 485 OR SUCH OTHER DATE
        AS IT MAY BE DECLARED EFFECTIVE BY THE SECURITIES AND EXCHANGE
        COMMISSION.
    
 
    / / 60 DAYS AFTER FILING PURSUANT TO PARAGRAPH (a)(1) OF RULE 485.
 
   
    /X/  ON SEPTEMBER 8, 1998 PURSUANT TO PARAGRAPH (a)(1) OF RULE 485.
    
 
    / /  75 DAYS AFTER FILING PURSUANT TO PARAGRAPH (a)(2) OF RULE 485.
 
    / /  ON             PURSUANT TO PARAGRAPH (a)(2) OF RULE 485.
 
    IF APPROPRIATE, CHECK THE FOLLOWING BOX:
 
   
    / / THIS POST-EFFECTIVE AMENDMENT DESIGNATES A NEW EFFECTIVE DATE FOR A
        PREVIOUSLY FILED POST-EFFECTIVE AMENDMENT.
    
 
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
<PAGE>
                                AIM SERIES TRUST
                      CONTENTS OF POST-EFFECTIVE AMENDMENT
 
THIS POST-EFFECTIVE AMENDMENT TO THE REGISTRATION STATEMENT OF AIM SERIES TRUST
  CONTAINS THE FOLLOWING DOCUMENTS:
 
   
<TABLE>
<S>        <C>        <C>
Facing Sheet
Contents of Post-Effective Amendment
Cross Reference Sheet
Part A        --      Prospectus
                      -- AIM Global Trends Fund
              --      Prospectus -- Advisor Class
                      -- AIM Global Trends Fund
Part B        --      Statement of Additional Information
                      -- AIM Global Trends Fund
              --      Statement of Additional Information -- Advisor Class
                      -- AIM Global Trends Fund
Part C        --      Other Information
Signature Page
              --      AIM Series Trust
Exhibits
</TABLE>
    
 
<PAGE>
                                AIM SERIES TRUST
                        FORM N-1A CROSS-REFERENCE SHEET
                   PROSPECTUS -- CLASS A, CLASS B AND CLASS C
   
<TABLE>
<CAPTION>
ITEM NO. OF
PART A OF FORM N-1A                          PROSPECTUS CAPTION
- -------------------------------------------  ---------------------------------------------------------------
<S>        <C>                               <C>
1.         Cover Page......................  Cover Page
2.         Synopsis........................  Summary
3.         Condensed Financial
           Information.....................  Prospectus Supplement; Performance
4.         General Description of
           Registrant......................  Investment Objective and Policies; Description of the
                                             Underlying Theme Funds; Risk Factors and Special
                                             Considerations; Management; General Information
5.         Management of the Fund..........  Management
5A.        Management's Discussion of Fund
           Performance.....................  Not Applicable
6.         Capital Stock and Other
           Securities......................  Dividends, Distributions and Tax Matters; General Information
7.         Purchase of Securities Being
           Offered.........................  How to Purchase Shares; Exchange Privilege; Determination of
                                             Net Asset Value; Management; Terms and Conditions of Purchase
                                             of the AIM Funds; Special Plans
8.         Redemption or Repurchase........  How to Redeem Shares; Determination of Net Asset Value
9.         Pending Legal Proceedings.......  Not Applicable
 
<CAPTION>
 
                                        PROSPECTUS -- ADVISOR CLASS
 
ITEM NO. OF
PART A OF FORM N-1A                          PROSPECTUS CAPTION
- -------------------------------------------  ---------------------------------------------------------------
<S>        <C>                               <C>
1.         Cover Page......................  Cover Page
2.         Synopsis........................  Summary
3.         Condensed Financial
           Information.....................  Prospectus Supplement; Performance
4.         General Description of
           Registrant......................  Investment Objective and Policies; Description of the
                                             Underlying Theme Funds; Risk Factors and Special
                                             Considerations; Management; General Information
5.         Management of the Fund..........  Management
5A.        Management's Discussion of Fund
           Performance.....................  Not Applicable
6.         Capital Stock and Other
           Securities......................  Dividends, Distributions and Tax Matters; General Information
7.         Purchase of Securities Being
           Offered.........................  How to Purchase Shares; Exchange Privilege; Determination of
                                             Net Asset Value; Management; Terms and Conditions of Purchase
                                             of the AIM Funds; Special Plans
8.         Redemption or Repurchase........  How to Redeem Shares; Determination of Net Asset Value
9.         Pending Legal Proceedings.......  Not Applicable
</TABLE>
    
<PAGE>
 
                                AIM SERIES TRUST
                        FORM N-1A CROSS-REFERENCE SHEET
   
<TABLE>
<CAPTION>
                    STATEMENT OF ADDITIONAL INFORMATION -- CLASS A, CLASS B AND CLASS C
 
ITEM NO. OF
PART B OF FORM N-1A                          STATEMENT OF ADDITIONAL INFORMATION CAPTION
- -------------------------------------------  ---------------------------------------------------------------
<S>        <C>                               <C>
10.        Cover Page......................  Cover Page
11.        Table of Contents...............  Table of Contents
12.        General Information and
           History.........................  Cover Page; Additional Information
13.        Investment Objectives and
           Policies........................  Investment Objective and Policies; Investment Limitations;
                                             Options, Futures and Currency Strategies; Risk Factors of the
                                             Underlying Theme Funds; Execution of Portfolio Transactions
14.        Management of the Registrant....  Trustees and Executive Officers; Management
15.        Control Persons and Principal
           Holders of Securities...........  Trustees and Executive Officers; Management
17.        Brokerage Allocation and Other
           Practices.......................  Execution of Portfolio Transactions
18.        Capital Stock and Other
           Securities......................  Not Applicable
19.        Purchase, Redemption and Pricing
           of Securities Being Offered.....  Valuation of Fund Shares; How to Purchase and Redeem Shares
20.        Tax Status......................  Taxes
21.        Underwriters....................  Management
22.        Calculation of Performance
           Data............................  Investment Results
23.        Financial Statements............  Financial Statements
</TABLE>
    
 
<PAGE>
                                AIM SERIES TRUST
                        FORM N-1A CROSS-REFERENCE SHEET
 
   
<TABLE>
<CAPTION>
                   STATEMENT OF ADDITIONAL INFORMATION -- ADVISOR CLASS
 
<S>        <C>                         <C>
ITEM NO. OF
PART B OF FORM N-1A                    STATEMENT OF ADDITIONAL INFORMATION CAPTION
- -------------------------------------  ----------------------------------------------------
10.        Cover Page................  Cover Page
11.        Table of Contents.........  Table of Contents
12.        General Information and
           History...................  Cover Page; Additional Information
13.        Investment Objectives and
           Policies..................  Investment Objective and Policies; Investment
                                       Limitations; Options, Futures and Currency
                                       Strategies; Risk Factors of the Underlying Theme
                                       Funds; Execution of Portfolio Transactions
14.        Management of the
           Registrant................  Trustees and Executive Officers; Management
15.        Control Persons and
           Principal Holders of
           Securities................  Trustees and Executive Officers; Management
16.        Investment Advisory and
           Other Services............  Management; Additional Information
17.        Brokerage Allocation and
           Other Practices...........  Execution of Portfolio Transactions
18.        Capital Stock and Other
           Securities................  Not Applicable
19.        Purchase, Redemption, and
           Pricing of Securities
           Being Offered.............  Valuation of Fund Shares; How to Purchase and Redeem
                                       Shares
20.        Tax Status................  Taxes
21.        Underwriters..............  Management
22.        Calculation of Performance
           Data......................  Investment Results
23.        Financial Statements......  Financial Statements
</TABLE>
    
 
PART C -- OTHER INFORMATION
 
Information required to be included in Part C is set forth under the appropriate
item, so numbered, in Part C of this Registration Statement.
<PAGE>
   
                                     [LOGO]
 
                             AIM GLOBAL TRENDS FUND
    
 
   
                        PROSPECTUS -- SEPTEMBER 8, 1998
    
- --------------------------------------------------------------------------------
 
   
This Prospectus contains information about AIM Global Trends Fund (the "Fund"),
which is a series investment portfolio of AIM Series Trust (the "Trust"), an
open-end, series, management investment company. The Fund is a diversified
portfolio which seeks long-term growth of capital. Unlike a typical mutual fund,
which invests directly in portfolio securities, the Fund invests substantially
all of its assets in shares of the AIM theme funds: AIM Global Consumer Products
and Services Fund; AIM Global Financial Services Fund; AIM Global Health Care
Fund; AIM Global Infrastructure Fund; AIM Global Resources Fund; and AIM Global
Telecommunications Fund (collectively, the "Underlying Theme Funds").
    
 
   
This Prospectus sets forth concisely the information about the Fund that
prospective investors should know before investing. It should be read and
retained for future reference. A Statement of Additional Information, dated
September 8, 1998, has been filed with the Securities and Exchange Commission
("SEC") and is incorporated herein by reference. The Statement of Additional
Information is available without charge upon written request to the Trust at 11
Greenway Plaza, Suite 100, Houston, Texas 77046-1173 or by calling
1-800-347-4246. 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. Additional information
about the Fund may also be obtained from http://www.aimfunds.com.
    
 
                            ------------------------
 
   
THE FUND'S SHARES ARE NOT DEPOSITS OR OBLIGATIONS OF, OR GUARANTEED OR ENDORSED
 BY, ANY BANK, AND THE FUND'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. SHARES OF THE FUND INVOLVE INVESTMENT RISKS,
                   INCLUDING THE POSSIBLE LOSS OF PRINCIPAL.
    
 
- --------------------------------------------------------------------------------
 
   
THESE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE SECURITIES AND
 EXCHANGE COMMISSION NOR HAS THE SECURITIES AND EXCHANGE COMMISSION PASSED ON
   THE ACCURACY OR ADEQUACY OF THIS PROSPECTUS.      ANY REPRESENTATION TO
                      THE CONTRARY IS A CRIMINAL OFFENSE.
    
 
                               Prospectus Page 1
<PAGE>
                             AIM GLOBAL TRENDS FUND
 
                               TABLE OF CONTENTS
- ------------------------------------------------------------
 
   
<TABLE>
<CAPTION>
                                                                                              Page
                                                                                            ---------
<S>                                                                                         <C>
Summary...................................................................................          2
Financial Highlights......................................................................          7
Investment Objective and Policies.........................................................          8
Description of the Underlying Theme Funds.................................................          9
Risk Factors and Special Considerations...................................................         11
Management................................................................................         14
Other Information.........................................................................         16
Appendix..................................................................................         18
</TABLE>
    
 
- --------------------------------------------------------------------------------
 
   
                                    SUMMARY
    
 
- --------------------------------------------------------------------------------
 
   
<TABLE>
<S>                            <C>                                               <C>
The Fund:                      The Fund is a diversified series of the Trust.
 
Investment Objective:          The Fund seeks long-term growth of capital.
 
Principal Investments:         The Fund invests, under normal circumstances, substantially all of its assets in shares of the
                               following Underlying Theme Funds: AIM Global Consumer Products and Services Fund ("Consumer Products
                               and Services Fund"); AIM Global Financial Services Fund ("Financial Services Fund"); AIM Global
                               Health Care Fund ("Health Care Fund"); AIM Global Infrastructure Fund ("Infrastructure Fund"); AIM
                               Global Resources Fund ("Resources Fund"); and AIM Global Telecommunications Fund ("Telecommu-
                               nications Fund"). The allocation of the Fund's assets to the Underlying Theme Funds is governed
                               strictly by a formula described herein. See "Investment Objective and Policies."
 
Investment Managers:           The Fund is managed by A I M Advisors, Inc. ("AIM") and is sub-advised and sub-administered by
                               INVESCO (NY), Inc. (the "Sub-adviser"). AIM and the Sub-adviser and their worldwide asset management
                               affiliates provide investment management and/or administrative services to institutional, corporate
                               and individual clients around the world. AIM and the Sub-adviser are both indirect wholly owned
                               subsidiaries of AMVESCAP PLC. AMVESCAP PLC and its subsidiaries are an independent investment man-
                               agement group that has a significant presence in the institutional and retail segment of the
                               investment management industry in North America and Europe, and a growing presence in Asia. AIM was
                               organized in 1976 and, together with its subsidiaries, currently advises approximately 90 investment
                               company portfolios.
 
Purchasing Shares:             Investors may select Class A or Class B shares of the Fund which are offered by this Prospectus at an
                               offering price that reflects differing sales charges
</TABLE>
    
 
                               Prospectus Page 2
<PAGE>
                             AIM GLOBAL TRENDS FUND
 
                                    SUMMARY
                                  (Continued)
- --------------------------------------------------------------------------------
   
<TABLE>
<S>                            <C>                                               <C>
                               and expense levels. See "Terms and Conditions of Purchase of the AIM Funds -- Sales Charges and
                               Dealer Concessions." Pursuant to a separate prospectus, the Fund also offers Advisor Class shares,
                               which represent interests in the Fund. The Advisor Class has different distribution arrangements.
 
  Class A Shares:              Shares are offered at net asset value plus any applicable initial sales charge.
 
  Class B Shares:              Shares are offered at net asset value without an initial sales charge, and are subject to a maximum
                               contingent deferred sales charge of 5% on certain redemptions made within six years from the date
                               such shares were purchased. Class B shares automatically convert to Class A shares eight years
                               following the end of the calendar month in which a purchase was made. Class B shares are subject to
                               higher expenses than Class A shares.
 
  Class C Shares:              Shares are offered at net asset value without an initial sales charge, and are subject to a
                               contingent deferred sales charge of 1% on certain redemptions made within one year from the date such
                               shares were purchased. Class C shares are subject to higher expenses than Class A shares.
 
                               Initial investments in any class of shares must be at least $500 and additional investments must be
                               at least $50. The minimum initial investment is modified for investments through tax-qualified
                               retirement plans and accounts initially established with an Automatic Investment Plan. The dis-
                               tributor of the Fund's shares is A I M Distributors, Inc. ("AIM Distributors"), P.O. Box 4739,
                               Houston, TX 77210-4739. See "How to Purchase Shares" and "Special Plans."
 
Suitability for Investors:     An investor in Class A, Class B or Class C shares of the Fund should consider the method of
                               purchasing shares that is most beneficial given the amount of the purchase, the length of time the
                               shares are expected to be held, and other circumstances. Investors should consider whether, during
                               the anticipated life of their investment in the Fund, the accumulated distribution fees and any
                               applicable contingent deferred sales charges on Class B shares prior to conversion or Class C shares
                               would be less than the initial sales charge and accumulated distribution fees on Class A shares
                               purchased at the same time, and to what extent such differential would be offset by the higher return
                               on Class A shares. To assist investors in making this determination, the table under the caption
                               "Table of Fees and Expenses" sets forth examples of the charges applicable to each class of shares.
                               Class A shares will normally be more beneficial than Class B or Class C shares to the investor who
                               qualifies for reduced initial sales charges, as described below. Therefore, AIM Distributors will
                               reject any order for purchase of more than $250,000 for Class B shares.
 
Exchange Privilege:            The Fund is among those mutual funds distributed by AIM Distributors (collectively, "The AIM Family
                               of Funds"). Class A, Class B and Class C shares of the Fund may be exchanged for shares of other
                               funds in The AIM Family of Funds in the manner and subject to the policies and charges set forth
                               herein. See "Exchange Privilege."
</TABLE>
    
 
                               Prospectus Page 3
<PAGE>
                             AIM GLOBAL TRENDS FUND
 
                                    SUMMARY
                                  (Continued)
- --------------------------------------------------------------------------------
   
<TABLE>
<S>                            <C>                                               <C>
Redeeming Shares:              Class A shareholders of the Fund may redeem all or a portion of their shares at the Fund's net asset
                               value on any business day, generally without charge. A contingent deferred sales charge of 1% may
                               apply to certain redemptions where a purchase of more than $1 million is made at net asset value. See
                               "How to Redeem Shares -- Contingent Deferred Sales Charge Program for Large Purchases."
 
                               Class B shareholders of the Fund may redeem all or a portion of their shares at net asset value on
                               any business day, less a contingent deferred sales charge for redemptions made within six years from
                               the date such shares were purchased. Class B shares redeemed after six years from the date such
                               shares were purchased will not be subject to any contingent deferred sales charge. See "How to Redeem
                               Shares -- Multiple Distribution System."
 
                               Class C shareholders of the Fund may redeem all or a portion of their shares at net asset value on
                               any business day, less a 1% contingent deferred sales charge for redemptions made within one year
                               from the date such shares were purchased. See "How to Redeem Shares -- Multiple Distribution
                               Systems."
 
Distributions:                 The Fund currently declares and pays dividends from net investment income, if any, on an annual
                               basis. The Fund makes distributions of realized capital gains, if any, on an annual basis. Dividends
                               and distributions of the Fund may be reinvested at net asset value without payment of a sales charge
                               in the Fund's shares or may be invested in shares of the other funds in The AIM Family of Funds. See
                               "Dividends, Distributions and Tax Matters" and "Special Plans."
 
Risk Factors:                  There is no assurance that the Fund will achieve its investment objective. The Fund's net asset value
                               will fluctuate, reflecting fluctuations in the net asset value of the shares of the Underlying Theme
                               Funds. Investors should review the investment objectives and policies of the Fund and the Underlying
                               Theme Funds carefully and consider their ability to assume these and other risks involved in
                               purchasing shares of the Fund.
                               See "Investment Objective and Policies," "Description of the Underlying Theme Funds" and "Risk
                               Factors and Special Considerations." As a recently organized entity, the Fund has a limited operating
                               history.
</TABLE>
    
 
   
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, AIMFUNDS.COM, LA
FAMILIA AIM DE FONDOS AND LA FAMILIA AIM DE FONDOS AND DESIGN ARE REGISTERED
SERVICE MARKS AND INVEST WITH DISCIPLINE AND AIM BANK CONNECTION ARE SERVICE
MARKS OF A I M MANAGEMENT GROUP INC.
    
 
                               Prospectus Page 4
<PAGE>
                             AIM GLOBAL TRENDS FUND
 
   
TABLE OF FEES AND EXPENSES. The expenses and maximum transaction costs
associated with investing in the Class A, Class B and Class C shares of the Fund
are reflected in the following tables.
    
 
<TABLE>
<CAPTION>
                                                                                            CLASS A   CLASS B   CLASS C
                                                                                            -------   -------   -------
<S>                                                                                         <C>       <C>       <C>
SHAREHOLDER TRANSACTION COSTS *:
  Maximum sales charge on purchases of shares (as a % of offering price)..................   4.75%      None      None
  Sales charges on reinvested distributions to shareholders...............................    None      None      None
  Maximum deferred sales charge (as a % of net asset value at time of purchase or sale,
  whichever  is less).....................................................................    None     5.00%     1.00%
  Redemption charges......................................................................    None      None      None
  Exchange fees...........................................................................    None      None      None
 
ANNUAL FUND OPERATING EXPENSES +:
  (AS A % OF AVERAGE NET ASSETS)
  Investment management fees..............................................................    None      None      None
  12b-1 distribution and service fees.....................................................   0.50%     1.00%     1.00%
  Other expenses..........................................................................    None      None      None
                                                                                            -------   -------   -------
  Total Fund Operating Expenses...........................................................   0.50%     1.00%     1.00%
                                                                                            -------   -------   -------
                                                                                            -------   -------   -------
</TABLE>
 
- ------------------
   
*   Sales charge waivers are available for Class A, Class B and Class C shares,
    and reduced sales charges are available for Class A shares. The maximum 5%
    contingent deferred sales charge on Class B shares applies to redemptions
    during the first year after purchase. The charge declines thereafter,
    reaching zero after six years. The 1% contingent deferred sales charge on
    Class C shares applies only to redemptions during the first year after
    purchase. See "How to Purchase Shares."
    
 
   
+   The Annual Fund Operating Expenses are estimated for the Fund's initial
    fiscal period. "Other expenses" (including transfer agency, legal and audit
    fees and other operating expenses) initially will be borne by AIM and the
    Sub-adviser. Subject to receipt of an order of the SEC pursuant to a pending
    exemptive application, such expenses may be borne by AIM and the Sub-adviser
    and the Underlying Theme Funds or the Underlying Theme Funds alone. See
    "Other Information -- Special Servicing Agreement." Long-term shareholders
    may pay more than the economic equivalent of the maximum front-end sales
    charge permitted by the National Association of Securities Dealers, Inc.
    rules regarding investment companies. See "Management" and the Statement of
    Additional Information for more information.
    
 
In addition to the Annual Fund Operating Expenses shown above, the Fund, as a
shareholder in the Underlying Theme Funds, indirectly bears its pro rata share
of the fees and expenses incurred by the Underlying Theme Funds. As a result,
the investment returns of the Fund reflect the expenses of the Underlying Theme
Funds in which it holds shares. Because the Fund invests only in Advisor Class
shares of the Underlying Theme Funds, it pays no sales charge or 12b-1
distribution or service fees in connection with these investments. The following
table shows the expense ratios applicable to Advisor Class shares of the
Underlying Theme Funds for their fiscal years ended October 31, 1997.
 
<TABLE>
<CAPTION>
                                                                                        EXPENSE RATIO OF
                                                                                          ADVISOR CLASS
UNDERLYING THEME FUND                                                                      SHARES (1)
- -------------------------------------------------------------------------------------  -------------------
<S>                                                                                    <C>
Consumer Products and Services Fund..................................................           1.34%
Financial Services Fund..............................................................           1.50%
Health Care Fund.....................................................................           1.27%
Infrastructure Fund..................................................................           1.50%
Resources Fund.......................................................................           1.50%
Telecommunications Fund..............................................................           1.29%
</TABLE>
 
- ------------------
(1) AIM has undertaken to limit each Underlying Theme Fund's expenses (exclusive
    of brokerage commissions, taxes, interest and extraordinary expenses) to a
    maximum level of 1.50% of the average daily net assets of such fund's
    Advisor Class shares.
 
                               Prospectus Page 5
<PAGE>
                             AIM GLOBAL TRENDS FUND
 
The following table shows the aggregate expense ratio of each class of the Fund
based on a weighted average of the expense ratios of Advisor Class shares of the
Underlying Theme Funds in which the Fund was invested as of October 31, 1997,
plus the Fund's total operating expenses. (1)
 
   
<TABLE>
<CAPTION>
AIM GLOBAL TRENDS FUND
(INCLUDING THE FUND'S INDIRECT PRO RATA SHARE OF THE EXPENSES OF THE UNDERLYING THEME              ESTIMATED AGGREGATE
FUNDS)                                                                                              EXPENSE RATIO (2)
- ------------------------------------------------------------------------------------------  ---------------------------------
<S>                                                                                         <C>
Class A...................................................................................               1.85%
Class B...................................................................................               2.35%
Class C...................................................................................               2.35%
</TABLE>
    
 
- ------------------
(1) These percentages do not necessarily reflect the current allocation of the
    Fund's assets to the Underlying Theme Funds or the allocation of the Fund's
    assets on any other date.
 
(2) Because of AIM's undertaking to limit each Underlying Theme Fund's expenses
    as described above, the Fund's aggregate expense ratio will not exceed
    2.00%, 2.50% and 2.50% for Class A, Class B and Class C Shares,
    respectively.
 
HYPOTHETICAL EXAMPLE OF EFFECT OF EXPENSES (3):
An investor would have directly or indirectly paid the following expenses of the
Fund based upon the Fund's estimated aggregate expense ratio at the end of the
periods shown on a $1,000 investment in the Fund, assuming a 5% annual return:
 
<TABLE>
<CAPTION>
                                                                                                   ONE YEAR       THREE YEARS
                                                                                                 -------------  ---------------
<S>                                                                                              <C>            <C>
Class A shares (1).............................................................................    $      66       $     103
Class B shares:
  Assuming a complete redemption at end of period (2)..........................................    $      75       $     107
  Assuming no redemption.......................................................................    $      24       $      74
Class C shares:
  Assuming a complete redemption at end of period (2)..........................................    $      34       $      74
  Assuming no redemption.......................................................................    $      24       $      74
</TABLE>
 
- ------------------
(1) Assumes payment of maximum sales charge by the investor.
 
(2) Assumes deduction of the applicable contingent deferred sales charge.
 
(3) THE "HYPOTHETICAL EXAMPLE" IS NOT A REPRESENTATION OF FUTURE EXPENSES. THE
    FUND'S ACTUAL DIRECT AND INDIRECT EXPENSES, AND AN INVESTOR'S DIRECT AND
    INDIRECT EXPENSES, MAY BE MORE OR LESS THAN THOSE SHOWN. The example assumes
    payment by the Fund of operating expenses at the level set forth under
    "Annual Fund Operating Expenses" above and of its indirect pro rata share of
    the Advisor Class share expenses of the Underlying Theme Funds, as described
    above.
 
   
THE FOREGOING TABLE IS INTENDED TO ASSIST INVESTORS IN UNDERSTANDING THE VARIOUS
COSTS AND EXPENSES ASSOCIATED WITH INVESTING IN THE FUND.
    
 
   
The table and the assumption in the Hypothetical Example of a 5% annual return
are required by regulations of the SEC applicable to all mutual funds. The 5%
annual return is not a prediction of and does not represent the Fund's or any
Underlying Theme Fund's projected or actual performance.
    
 
                               Prospectus Page 6
<PAGE>
                             AIM GLOBAL TRENDS FUND
 
   
                              FINANCIAL HIGHLIGHTS
    
 
- --------------------------------------------------------------------------------
 
   
The table below provides condensed financial information concerning income and
capital changes for one Class A, Class B and Class C share of the Fund. This
information is supplemented by the financial statements and accompanying notes
appearing in the Statement of Additional Information.
    
 
   
                             AIM GLOBAL TRENDS FUND
                    (FORMERLY GT GLOBAL NEW DIMENSION FUND)
    
 
   
                                 [TO BE ADDED]
    
 
                            ------------------------
 
   
PERFORMANCE. All advertisements of the Fund will disclose the maximum sales
charge (including deferred sales charges) imposed on purchases of the Fund's
shares. If any advertised performance data does not reflect the maximum sales
charge (if any), such advertisement will disclose that the sales charge has not
been deducted in computing the performance data, and that, if reflected, the
maximum sales charge would reduce the performance quoted. See the Statement of
Additional Information for further details concerning performance comparisons
used in advertisements by the Fund. Further information regarding the Fund's
performance is contained in the Fund's annual report to shareholders, which is
available upon request and without charge.
    
 
   
The Fund's total return is calculated in accordance with a standardized formula
for computation of annualized total return. Standardized total return for Class
A shares reflects the deduction of the Fund's maximum front-end sales charge at
the time of purchase. Standardized total return for Class B and Class C shares
reflects the deduction of the maximum applicable contingent deferred sales
charge on a redemption of shares held for the period.
    
 
   
The Fund's total return shows its overall change in value, including changes in
share price and assuming all the Fund's dividends and capital gain distributions
are reinvested. A cumulative total return reflects the Fund's performance over a
stated period of time. An average annual total return reflects the hypothetical
compounded annual rate of return that would have produced the same cumulative
total return if the Fund's performance had been constant over the entire period.
BECAUSE AVERAGE ANNUAL RETURNS TEND TO EVEN OUT VARIATIONS IN THE FUND'S RETURN,
INVESTORS SHOULD RECOGNIZE THAT SUCH RETURNS ARE NOT THE SAME AS ACTUAL
YEAR-BY-YEAR RESULTS. To illustrate the components of overall performance, the
Fund may separate its cumulative and average annual returns into income results
and capital gains or losses.
    
 
   
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 Underlying Theme Funds. Such
practices will have the effect of increasing the Fund's total return. The
performance of the Fund will vary from time to time and past results are not
necessarily representative of future results. The Fund's performance is a
function of its portfolio management in selecting the type and quality of
portfolio securities and is affected by operating expenses of the Fund as well
as by general market conditions.
    
 
   
UNDERLYING THEME FUND PERFORMANCE. The Fund has a limited history and therefore
a limited performance record. Thus, the performance shown below is not the
performance of the Fund, but instead reflects the performance of the Underlying
Theme Funds. The following table shows the average annual total returns of Class
A and Class B shares of each Underlying Theme Fund for the most recent one- and
five-year periods (as applicable) and for the life of the Underlying Theme
Funds. The performance information reflects deduction of the maximum applicable
sales charges. Returns would be
    
 
                               Prospectus Page 7
<PAGE>
                             AIM GLOBAL TRENDS FUND
   
higher if these charges were not reflected. The Fund invests in the Advisor
Class shares of the Underlying Theme Funds, which are not subject to sales
charges and distribution and service fees. However, Class A and Class B shares
of the Fund are subject to their own sales charges and distribution and service
fees.
    
 
   
<TABLE>
<CAPTION>
                                                                          AVERAGE ANNUAL TOTAL RETURN THROUGH 4/30/98
                                                                   ---------------------------------------------------------
                                                                       ONE YEAR           FIVE YEARS         LIFE OF FUND
                                                                   -----------------   -----------------   -----------------
UNDERLYING THEME FUND                                              CLASS A   CLASS B   CLASS A   CLASS B   CLASS A   CLASS B
- -----------------------------------------------------------------  -------   -------   -------   -------   -------   -------
<S>                                                                <C>       <C>       <C>       <C>       <C>       <C>
Consumer Products and Services Fund..............................   45.69%    47.14%     n/a       n/a     30.87%(1) 31.66%(1)
Financial Services Fund..........................................   33.53%    34.54%     n/a       n/a     17.52%(2) 17.94%(2)
Health Care Fund.................................................   28.90%    29.62%    17.91%    18.25%   14.59%(3) 18.50%(4)
Infrastructure Fund..............................................    8.37%     8.14%     n/a       n/a     9.93%(5)  10.17%(5)
Resources Fund...................................................    7.91%     7.80%     n/a       n/a     9.00%(6)  9.24%(6)
Telecommunications Fund..........................................   36.09%    37.17%    14.34%    14.64%   13.67%(7) 14.85%(8)
</TABLE>
    
 
   
Past performance of the Underlying Theme Funds is not a guarantee of future
results for either the Underlying Theme Funds or the Fund. Further information
about each Underlying Theme Fund's performance is contained in its Annual Report
to Shareholders, which may be obtained without charge by calling (800) 824-1580
or contacting your financial adviser.
    
- ------------------
   
(1) The Consumer Products and Services Fund commenced operations on December 30,
    1994.
    
 
   
(2) The Financial Services Fund commenced operations on May 31, 1994.
    
 
   
(3) Class A shares of the Health Care Fund were initially offered on August 7,
    1989.
    
 
   
(4) Class B shares of the Health Care Fund were initially offered on April 1,
    1993.
    
 
   
(5) The Infrastructure Fund commenced operations on May 31, 1994.
    
 
   
(6) The Resources Fund commenced operations on May 31, 1994.
    
 
   
(7) Class A Shares of the Telecommunications Fund were initially offered on
    January 27, 1992.
    
 
   
(8) Class B shares of the Telecommunications Fund were initially offered on
    April 1, 1993.
    
 
- --------------------------------------------------------------------------------
 
                            INVESTMENT OBJECTIVE AND
                                    POLICIES
 
- --------------------------------------------------------------------------------
 
The Fund seeks long-term growth of capital. Unlike a typical mutual fund, which
invests directly in securities, the Fund invests, under normal circumstances,
substantially all of its assets in the following Underlying Theme Funds:
 
    / / Consumer Products and Services Fund
 
    / / Financial Services Fund
 
    / / Health Care Fund
 
    / / Infrastructure Fund
 
    / / Resources Fund
 
    / / Telecommunications Fund
 
The Sub-adviser exercises no discretion in investing the Fund's assets. Rather,
the Sub-adviser periodically determines the allocation of the Fund's assets to
the Underlying Theme Funds according to the industry weightings of the companies
composing the Morgan Stanley Capital International All Country (AC) World Index
("MSCI"). (The MSCI is a broad unmanaged index of global stock prices,
comprising approximately 2,483 different issuers, located in 48 countries
including both developed and developing countries as of April 30, 1998. Each of
the 2,483 stocks is placed into one of 38 MSCI industry sectors.) The Sub-
adviser assesses which of the Underlying Theme Funds can invest, as part of its
primary focus, in each of these industries. For example, industries in the MSCI
in which the Financial Services Fund invests include the Banking, Financial
Services, Insurance and Real Estate industries. The percentage that those
industries compose in the MSCI is the initial weighting assigned to the
Financial Services Fund. Where two or more Underlying Theme Funds can invest in
an industry, the weighting of that industry in the MSCI is split equally among
each qualifying Underlying Theme Fund. See the Appendix for the allocation of
the 38 industries to the Underlying Theme Funds. Of course, the Underlying Theme
Funds do not invest necessarily in the same industries or the same companies
that compose the MSCI. Because the percentage weight assigned to each industry
in the MSCI changes over time and because the percentage of the Fund's assets
invested in each Underlying Theme Fund will change over time, the Sub-adviser
will rebalance the Fund's assets among the Underlying Theme
 
                               Prospectus Page 8
<PAGE>
                             AIM GLOBAL TRENDS FUND
Funds at least semi-annually. In addition, the Sub-adviser will invest incoming
money in, and satisfy redemption requests by redeeming shares of, each
Underlying Theme Fund according to the MSCI weighting as of the last business
day of the preceding month.
 
As of April 30, 1998, the allocation of the Fund's assets to the Underlying
Theme Funds was as follows:
 
<TABLE>
<S>                                        <C>
Consumer Products and Services Fund......      30.8%
Financial Services Fund..................      21.5%
Health Care Fund.........................      10.4%
Infrastructure Fund......................      16.4%
Resources Fund...........................      11.1%
Telecommunications Fund..................       9.7%
</TABLE>
 
These percentages do not include cash or money market instruments held by the
Fund and do not necessarily reflect the current allocation of the Fund's assets
to the Underlying Theme Funds or the allocation of the Fund's assets on any
other date.
 
The Fund is a more diversified investment than any single Underlying Theme Fund.
However, because the Underlying Theme Funds are actively managed without any
attempt to reflect the country, industry or company weightings of the MSCI, the
Underlying Theme Funds will perform differently than the corresponding industry
components of the MSCI, and the Underlying Theme Funds will perform differently
than the overall MSCI. While the Fund does not therefore represent the
performance of the MSCI, it does represent a globally diversified portfolio,
with allocations among developed and emerging countries, industries and
companies intended to achieve long-term growth of capital.
 
The Fund is designed to meet the needs of investors who seek professional money
management services and who appreciate the advantages of diversification. The
Fund by itself should not be considered a complete investment program. As a
recently organized entity, the Fund has a limited operating history.
 
OTHER INFORMATION. The investment objective of the Fund may not be changed
without the approval of a majority of its outstanding voting securities. As
defined in the Investment Company Act of 1940, as amended ("1940 Act"), and as
used in this Prospectus, a "majority of the Fund's outstanding voting
securities" means the lesser of (i) 67% of the Fund's shares represented at a
meeting at which more than 50% of the outstanding shares are represented, or
(ii) more than 50% of the outstanding shares. In addition, the Fund has adopted
certain investment limitations as fundamental policies that also may not be
changed without shareholder approval. See "Investment Limitations" in the
Statement of Additional Information. Unless specifically noted, the Fund's
investment policies described in this Prospectus, and in the Statement of
Additional Information, are not fundamental policies and may be changed by the
Trust's Board of Trustees without shareholder approval.
 
- --------------------------------------------------------------------------------
 
                               DESCRIPTION OF THE
                             UNDERLYING THEME FUNDS
 
- --------------------------------------------------------------------------------
 
   
The following descriptions summarize the investment objectives and policies of
the Underlying Theme Funds. There is no assurance that any Underlying Theme Fund
will achieve its investment objective. The Statement of Additional Information
includes more information about the investment policies of the Underlying Theme
Funds. Investors desiring more information on an Underlying Theme Fund should
call (800) 347-4246 or contact their financial adviser for the Underlying Theme
Fund's prospectus.
    
 
CONSUMER PRODUCTS AND SERVICES FUND. The Consumer Products and Services Fund's
investment objective is long-term capital growth. It seeks its objective by
investing all of its investable assets in the Consumer Products and Services
Portfolio, that, in turn, invests primarily in equity securities of companies
throughout the world that manufacture, market, retail or distribute consumer
products and services. The Consumer Products and Services Portfolio's investment
objective is identical to that of the Consumer Products and Services Fund.
 
At least 65% of the Consumer Products and Services Portfolio's total assets
normally will be invested in common and preferred stocks and warrants to acquire
such securities issued by consumer products and services companies. A "consumer
products or services" company is an entity in which (i) at least 50% of either
the revenues or earnings was derived
 
                               Prospectus Page 9
<PAGE>
                             AIM GLOBAL TRENDS FUND
from activities relating to consumer products or services, or (ii) at least 50%
of the assets was devoted to such activities, based on the company's most recent
fiscal year. The remainder of the Consumer Products and Services Portfolio's
assets may be invested in debt securities issued by consumer products or
services companies and/or equity and debt securities of companies outside the
consumer products or services industries, which, in the opinion of the
Sub-adviser, stand to benefit from developments in such industries.
 
FINANCIAL SERVICES FUND. The Financial Services Fund's investment objective is
long-term capital growth. It seeks its objective by investing all of its
investable assets in the Financial Services Portfolio, that, in turn, invests
primarily in equity securities of companies throughout the world that operate in
the financial services industries. The Financial Services Portfolio's investment
objective is identical to that of the Financial Services Fund.
 
At least 65% of the Financial Services Portfolio's total assets normally will be
invested in common and preferred stocks and warrants to acquire such securities
issued by financial services companies. A "financial services" company is an
entity in which (i) at least 50% of either the revenues or earnings was derived
from financial services activities, or (ii) at least 50% of the assets was
devoted to such activities, based on the company's most recent fiscal year. The
remainder of the Financial Services Portfolio's assets may be invested in debt
securities issued by financial services companies and/or equity and debt
securities of companies outside of the financial services industries, which, in
the opinion of the Sub-adviser, stand to benefit from developments in the
financial services industries.
 
HEALTH CARE FUND. The Health Care Fund's investment objective is long-term
capital appreciation. It seeks its objective by investing primarily in equity
securities of health care companies throughout the world.
 
At least 65% of the Health Care Fund's total assets normally will be invested in
common and preferred stocks and warrants to acquire such securities issued by
health care companies. A "health care" company is an entity in which (i) at
least 50% of either the revenues or earnings was derived from health care
activities, or (ii) at least 50% of the assets was devoted to such activities,
based on the company's most recent fiscal year. The remainder of the Health Care
Fund's assets may be invested in debt securities issued by health care companies
and/or equity and debt securities of companies outside of the health care
industry, which, in the opinion of the Sub-adviser, stand to benefit from
developments in the health care industries.
 
INFRASTRUCTURE FUND. The Infrastructure Fund's investment objective is long-term
capital growth. It seeks its objective by investing all of its investable assets
in the Infrastructure Portfolio, that, in turn, invests primarily in equity
securities of companies throughout the world that design, develop or provide
products and services significant to a country's infrastructure. The
Infrastructure Portfolio's investment objective is identical to that of the
Infrastructure Fund.
 
At least 65% of the Infrastructure Portfolio's total assets normally will be
invested in common and preferred stocks and warrants to acquire such securities
issued by infrastructure companies. An "infrastructure" company is an entity in
which (i) at least 50% of either the revenues or earnings was derived from
infrastructure activities, or (ii) at least 50% of the assets was devoted to
such activities, based on the company's most recent fiscal year. The remainder
of the Infrastructure Portfolio's assets may be invested in debt securities
issued by infrastructure companies and/or equity and debt securities of
companies outside of the infrastructure industries, which, in the opinion of the
Sub-adviser, stand to benefit from developments in the infrastructure
industries.
 
RESOURCES FUND. The Resources Fund's investment objective is long-term capital
growth. It seeks its objective by investing all of its investable assets in the
Resources Portfolio, that, in turn, invests primarily in equity securities of
companies throughout the world that own, explore or develop natural resources
and other basic commodities, or supply goods and services to such companies. The
Resources Portfolio's investment objective is identical to that of the Resources
Fund.
 
At least 65% of the Resources Portfolio's total assets will normally be invested
in common and preferred stocks and warrants to acquire such securities issued by
natural resource companies. A "natural resource" company is an entity in which
(i) at least 50% of either the revenues or earnings was derived from natural
resource activities, or (ii) at least 50% of the assets was devoted to such
activities, based upon the company's most recent fiscal year. The remainder of
the Resources Portfolio's assets may be invested in debt securities issued by
natural resource companies and/or equity and debt securities of companies
outside of the natural resource industries, which, in the opinion of the
Sub-adviser, stand to benefit from developments in the natural resource
industries.
 
                               Prospectus Page 10
<PAGE>
                             AIM GLOBAL TRENDS FUND
 
TELECOMMUNICATIONS FUND. The Telecommunications Fund's investment objective is
long-term growth of capital. It seeks its objective by investing primarily in
equity securities of companies throughout the world engaged in the development,
manufacture or sale of telecommunications services or equipment.
 
At least 65% of the Telecommunications Fund's total assets normally will be
invested in common and preferred stocks and warrants to acquire such securities
issued by telecommunications companies. A "telecommunications" company is an
entity in which (i) at least 50% of either its revenues or earnings was derived
from telecommunications activities, or (ii) at least 50% of its assets was
devoted to telecommunications activities, based on the company's most recent
fiscal year. The remainder of the assets of the Telecommunications Fund may be
invested in debt securities issued by telecommunications companies and/or equity
and debt securities of companies outside of the telecommunications industry
which, in the opinion of the Sub-adviser, stand to benefit from developments in
the telecommunications industries.
 
- --------------------------------------------------------------------------------
 
                                RISK FACTORS AND
                             SPECIAL CONSIDERATIONS
 
- --------------------------------------------------------------------------------
 
INVESTING IN THE UNDERLYING THEME FUNDS. The investments of the Fund are
concentrated in the Underlying Theme Funds, so the Fund's investment performance
is directly related to the investment performance of the Underlying Theme Funds.
The ability of the Fund to meet its investment objective is directly related to
the allocation among those Underlying Theme Funds as well as the ability of the
Underlying Theme Funds to meet their objectives. There is no assurance that the
investment objective of the Fund or any Underlying Theme Fund will be achieved.
The value of the Underlying Theme Funds' domestic and foreign investments varies
in response to many factors. The value of equity securities held by an
Underlying Theme Fund will fluctuate in response to general market and economic
developments, as well as developments affecting the particular issuers of such
securities. In addition, the value of debt securities held by an Underlying
Theme Fund generally will fluctuate with changes in the perceived
creditworthiness of the issuers of such securities and interest rates.
 
Because each Underlying Theme Fund focuses its investments on particular
industries, an investment in each may be more volatile than that of other
investment companies that do not concentrate their investments in such a manner.
The value of the shares of each Underlying Theme Fund will be especially
susceptible to factors affecting the industries in which it focuses. In
particular, each of the industries is subject to governmental regulation that
may have a material effect on the products and services offered by companies in
these industries.
 
   
UNDERLYING THEME FUNDS' INVESTMENT ALLOCATION. The Sub-adviser allocates each
Underlying Theme Fund's (or its corresponding Portfolio's) assets among
securities of countries and in currency denominations where opportunities for
meeting each Underlying Theme Fund's investment objective are expected to be the
most attractive. Each Underlying Theme Fund may invest substantially in
securities denominated in foreign currencies or in multinational currency units
(such as Euros). Under normal conditions, each Underlying Theme Fund invests in
the securities of issuers located in at least three countries, including the
United States; investments in securities of issuers in any one country, other
than the United States, will represent no more than 40% of the Financial
Services Portfolio's and the Telecommunication Fund's total assets, and no more
than 50% of the Infrastructure Portfolio's, the Resources Portfolio's, the
Health Care Fund's and the Consumer Products and Services Portfolio's total
assets.
    
 
In analyzing specific companies for possible investment the Sub-adviser, on
behalf of the Underlying Theme Funds, ordinarily looks for several of the
following characteristics: above-average per share earnings growth; high return
on invested capital; a healthy balance sheet; sound financial and accounting
policies and overall financial strength; strong competitive advantages;
effective research and product development and marketing; development of new
technologies; efficient service; pricing flexibility; strong management; and
general operating characteristics that will enable the companies to compete
successfully in their respective markets. In assessing companies for the
Resources Portfolio, the Sub-adviser will also evaluate, among other factors,
their capabilities for expanded exploration and production, superior
 
                               Prospectus Page 11
<PAGE>
                             AIM GLOBAL TRENDS FUND
exploration programs and production techniques and facilities, current
inventories, expected production and demand levels and the potential to
accumulate new resources.
 
FOREIGN INVESTMENTS. The Underlying Theme Funds' investments in foreign
securities may involve risks in addition to those of U.S. investments, including
increased political and economic risk, as well as exposure to currency
fluctuations. By investing in foreign securities, the Underlying Theme Funds
also have increased economic and political risks as they are exposed to events
and factors in the various world markets. This is especially true of an
Underlying Theme Fund that invests in emerging markets. Many investments in
emerging markets are considered speculative and therefore may offer greater
return potential, but have significantly greater risk. Also, to the extent that
an Underlying Theme Fund's investments are denominated in foreign currencies,
changes in the value of foreign currencies can significantly affect the Fund's
share price.
 
LOWER QUALITY DEBT SECURITIES. The Fund may invest in an Underlying Theme Fund
that invests in high yield, high risk securities, commonly known as "junk
bonds." As a result, the Fund may be subject to some of the risks resulting from
high yield investing. The Fund also may invest in Underlying Theme Funds that
invest in medium grade bonds. Lower quality debt instruments generally offer a
higher current yield than that available from higher grade issues, but typically
involve greater risk. Lower rated and comparable unrated securities are
especially subject to adverse changes in general economic conditions, to changes
in the financial condition of their issuers, and to price fluctuation in
response to changes in interest rates. During periods of economic downturn or
rising interest rates, issuers of these instruments may experience financial
stress that could adversely affect their ability to make payments of principal
and interest and increase the possibility of default.
 
ILLIQUID SECURITIES. The Underlying Theme Funds may invest in securities for
which no readily available market exists, so-called "illiquid securities."
Illiquid securities may be more difficult to value than liquid securities and
the sale of illiquid securities generally will require more time and result in
higher brokerage charges or dealer discounts and other selling expenses than the
sale of liquid securities. Moreover, illiquid securities often sell at prices
lower than similar securities that are liquid.
 
OPTIONS, FUTURES AND FORWARD CURRENCY TRANSACTIONS. Each Underlying Theme Fund
is authorized to enter into options, futures and forward currency transactions,
although they might not enter into such transactions. Options, futures and
forward currency transactions involve certain risks, which include: (1)
dependence on the Sub-adviser's ability to predict movements in the prices of
individual securities, fluctuations in the general securities markets or in the
appropriate market sector and movements in interest rates and currency markets;
(2) imperfect correlation, or even no correlation, between movements in the
price of options, forward contracts, futures contracts or options thereon and
movements in the price of the currency or security hedged or used for cover; (3)
the fact that skills and techniques needed to trade options, futures contracts
and options thereon or to use forward currency contracts are different from
those needed to select the securities in which an Underlying Theme Fund invests;
(4) lack of assurance that a liquid secondary market will exist for any
particular option, futures contract or option thereon at any particular time;
(5) the possible loss of principal under certain conditions; and (6) the
possible inability of an Underlying Theme Fund to purchase or sell a portfolio
security at a time when it would otherwise be favorable for it to do so, or the
possible need for an Underlying Theme Fund to sell a security at a
disadvantageous time, due to the need for the Underlying Theme Fund to maintain
"cover" or to set aside securities in connection with hedging transactions.
 
INVESTING IN SMALLER COMPANIES. Each Underlying Theme Fund may invest in smaller
companies that may present greater opportunities for capital appreciation, but
may also involve greater risks than large, established issuers. Such smaller
companies may have limited resources, and their securities may trade less
frequently and in more limited volume than the securities of larger, more
established companies. As a result, the prices of the securities of such smaller
companies may fluctuate to a greater degree than the prices of the securities of
other issuers.
 
OTHER INVESTMENT PRACTICES OF THE UNDERLYING THEME FUNDS. In addition to the
investment practices described in this Prospectus, the Underlying Theme Funds
may engage in certain other investment practices, including lending their
portfolio securities; purchasing securities on a when-issued or delayed delivery
basis; entering into repurchase or reverse repurchase agreements; and borrowing
money. Further information on the investment policies, practices and risks of
the Underlying Theme Funds can be found in the Statement of Additional
Information as well as the Underlying Theme Funds' prospectus and statement of
additional information.
 
                               Prospectus Page 12
<PAGE>
                             AIM GLOBAL TRENDS FUND
 
PURCHASES AND REDEMPTIONS. From time to time, the Underlying Theme Funds may
experience relatively large purchases or redemptions due to rebalancing of the
Fund by the Sub-adviser. This may have a material effect on the Underlying Theme
Funds, because Underlying Theme Funds that experience redemptions as a result of
the rebalancing may have to sell portfolio securities and because Underlying
Theme Funds that receive additional cash will have to invest it. While it is
impossible to predict the overall impact of these transactions over time, there
could be adverse effects on portfolio management to the extent that Underlying
Theme Funds may be required to sell securities at times when they would not
otherwise do so, or receive cash that cannot be invested in an expeditious
manner. There may be tax consequences associated with purchases and sales of
securities, and such sales also may increase transaction costs.
 
MASTER-FEEDER STRUCTURE OF CERTAIN UNDERLYING THEME FUNDS. The Financial
Services Fund, Infrastructure Fund, Resources Fund and Consumer Products and
Services Fund, unlike mutual funds that directly acquire and manage their own
portfolios of securities, each seeks its investment objective by investing all
of its investable assets in the Financial Services Portfolio, Infrastructure
Portfolio, Resources Portfolio and Consumer Products and Services Portfolio
(each a "Portfolio"), respectively. Each Portfolio is a separate investment
company. Because each such Underlying Theme Fund will invest only in its
corresponding Portfolio, that Underlying Theme Fund's shareholders will acquire
only an indirect interest in the investments of that Portfolio.
 
TEMPORARY DEFENSIVE STRATEGIES. The Underlying Theme Funds retain the
flexibility to respond promptly to changes in market and economic conditions.
Accordingly, in the interest of preserving shareholders' capital the Sub-adviser
may employ a temporary defensive investment strategy if it determines such a
strategy to be warranted due to market, economic or political conditions. Under
a defensive strategy, the Underlying Theme Funds may invest up to 100% of their
total assets in cash and/or high quality debt securities and money market
instruments. To the extent an Underlying Theme Fund adopts a temporary defensive
posture, it will not be invested so as to achieve directly its investment
objective.
 
In addition, pending investment of proceeds from new sales of the shares or to
meet its ordinary daily cash needs, the Underlying Theme Funds may hold cash
and/or may invest in high quality debt instruments and money market instruments.
The Fund may hold cash and/or may invest in money market instruments under
similar circumstances. Money market instruments in which the Underlying Theme
Funds and the Fund may invest include, but are not limited to, United States
government securities; high-grade commercial paper; bank certificates of
deposit; bankers' acceptances and repurchase agreements related to any of the
foregoing. "High-grade commercial paper" refers to commercial paper rated A-1 by
Standard & Poor's, a division of The McGraw-Hill Companies, Inc., or P-1 by
Moody's Investors Service, Inc. or, if not rated, determined by the Sub-adviser
to be of comparable quality.
 
PORTFOLIO TURNOVER. The Fund's portfolio turnover rate is expected to be low and
is not anticipated to exceed 20% annually. The portfolio turnover rates of the
Underlying Theme Funds and their corresponding Portfolios have ranged from 35%
to 392% during their most recent fiscal years. There is no assurance that the
turnover rates of the Underlying Theme Funds and their corresponding Portfolios
will remain within this range during subsequent fiscal years. Higher turnover
rates may result in higher expenses being incurred by the Underlying Theme
Funds.
 
   
AFFILIATED PERSONS. The officers and trustees of the Trust currently serve as
officers and trustees of the Underlying Theme Funds. AIM and the Sub-adviser
also serves as investment adviser and/or administrator and sub-adviser and/or
sub-administrator, respectively, to the Underlying Theme Funds. Therefore,
conflicts may arise as these persons fulfill their fiduciary responsibilities to
the Fund and the Underlying Theme Funds.
    
 
                               Prospectus Page 13
<PAGE>
                             AIM GLOBAL TRENDS FUND
 
   
                                   MANAGEMENT
    
 
- --------------------------------------------------------------------------------
 
   
The Trust's Board of Trustees has overall responsibility for the operation of
the Fund. The Trust's Board of Trustees has approved all significant agreements
between the Trust on the one side and persons or companies furnishing services
to the Fund on the other, including the investment management and administration
agreement with AIM, the investment sub-advisory and sub-administration agreement
between AIM and the Sub-adviser, the agreements with AIM Distributors regarding
distribution of the Fund's shares, the custody agreement and the transfer agency
agreement. The day-to-day operations of the Fund are delegated to the officers
of the Trust, subject always to the objective and policies of the Fund and to
the general supervision of the Trust's Board of Trustees. See "Trustees and
Executive Officers" in the Statement of Additional Information for information
on the Trustees.
    
 
   
INVESTMENT MANAGEMENT AND ADMINISTRATION. Subject to the supervision and
direction of the Trust's Board of Trustees, AIM and the Sub-adviser will ensure
that the Fund's assets are invested in the Underlying Theme Funds according to
the formula and pre-determined percentages described in the "Investment
Objective and Policies" section of this Prospectus. AIM and the Sub-adviser will
determine how the Fund's assets will be invested in short-term investments and
place all purchase and sale orders for such instruments and for the Underlying
Theme Funds. AIM and the Sub-adviser provide the following administration
services to the Fund: furnishing corporate officers and clerical staff;
providing office space, services and equipment; and supervising all matters
relating to the Fund's operation. The Sub-adviser also serves as the Fund's
pricing and accounting agent. Finally, AIM and the Sub-adviser will initially
assume all costs of the Fund's operation, except for service and distribution
fees described below and non-recurring and extraordinary expenses. The Fund, as
a shareholder in the Underlying Theme Funds, indirectly will bear its
proportionate share of any investment management fees and other expenses paid by
the Underlying Theme Funds. The investment management and administration fees
paid by the Underlying Theme Funds are higher than those paid by most mutual
funds.
    
 
   
AIM, 11 Greenway Plaza, Suite 100, Houston, Texas 77046, serves as the
investment manager to the Fund pursuant to a master investment management and
administration agreement, dated as of May 29, 1998 (the "Advisory Agreement").
AIM was organized in 1976 and, together with its subsidiaries, manages or
advises approximately 90 investment company portfolios encompassing a broad
range of investment objectives. The Sub-adviser, 50 California Street, 27th
Floor, San Francisco, California 94111, and 1166 Avenue of the Americas, New
York, New York 10036, serves as the sub-adviser to the Fund pursuant to an
investment sub-advisory and sub-administration agreement dated as of May 29,
1998. Prior to May 29, 1998, the Sub-adviser was known as Chancellor LGT Asset
Management, Inc. On May 29, 1998, Liechtenstein Global Trust AG ("LGT"), the
former indirect parent organization of the Sub-adviser, consummated a purchase
agreement with AMVESCAP PLC pursuant to which AMVESCAP PLC acquired LGT's Asset
Management Division, which included the Sub-adviser and certain other
affiliates. As a result of this transaction, the Sub-adviser is now an indirect
wholly owned subsidiary of AMVESCAP PLC. Prior to the sale, the Sub-adviser and
its worldwide asset management affiliates provided investment management and/or
administrative services to institutional, corporate and individual clients
around the world since 1969.
    
 
AIM and the Sub-adviser and their worldwide asset management affiliates provide
investment management and/or administrative services to institutional, corporate
and individual clients around the world. AIM and the Sub-adviser are both
indirect wholly owned subsidiaries of AMVESCAP PLC. AMVESCAP PLC and its
subsidiaries are an independent investment management group that has a
significant presence in the institutional and retail segment of the investment
management industry in North America and Europe, and a growing presence in Asia.
 
   
In addition to the investment resources of their Houston, San Francisco and New
York offices, AIM and the Sub-adviser draw upon the expertise, personnel, data
and systems of other offices in Atlanta, Boston, Dallas, Denver, Louisville,
Miami, Portland (Oregon), Frankfurt, Hong Kong, London, Singapore, Sydney, Tokyo
and Toronto.
    
 
                               Prospectus Page 14
<PAGE>
                             AIM GLOBAL TRENDS FUND
In managing the Fund, the Sub-adviser employs a team approach, taking advantage
of its investment resources around the world.
 
While the Fund will not be actively managed or have a portfolio manager, the
Underlying Theme Funds are actively managed by teams of investment
professionals. At least semi-annually the Fund will rebalance the Fund's assets
among the Underlying Theme Funds according to the MSCI weighting as of the last
business day of the preceding month.
 
   
DISTRIBUTOR. The Trust has entered into a Master Distribution Agreement, dated
May 29, 1998 on behalf of Class A and Class C shares of the Fund, and has
entered into a Master Distribution Agreement, dated May 29, 1998, on behalf of
Class B shares of the Fund (individually referred to as a "Distribution
Agreement" or collectively as the "Distribution Agreements") with AIM
Distributors, a registered broker-dealer and a wholly owned subsidiary of AIM,
to act as the distributor of Class A, Class B and Class C shares of the Fund.
Certain directors and officers of the Trust are affiliated with AIM
Distributors.
    
 
   
The Distribution Agreements provide AIM Distributors with the exclusive right to
distribute shares of the Fund directly and through institutions with whom AIM
Distributors has entered into selected dealer agreements. Under the Distribution
Agreement for the Class B shares, AIM Distributors sells Class B shares of the
Fund at net asset value subject to a contingent deferred sales charge
established by AIM Distributors. AIM Distributors is authorized to advance to
institutions through whom Class B shares are sold a sales commission under
schedules established by AIM Distributors. The Distribution Agreement for the
Class B shares provides that AIM Distributors (or its assignee or transferee)
will receive 0.75% (of the total 1.00% payable under the distribution plan
applicable to Class B shares) of the Fund's average daily net assets
attributable to Class B shares attributable to the sales efforts of AIM
Distributors. In the event the Class B shares Distribution Agreement is
terminated, AIM Distributors would continue to receive payments of asset based
sales charges in respect of the outstanding Class B shares attributable to the
distribution efforts of AIM Distributors; provided, however, that a complete
termination of the Class B shares master distribution plan (as defined in the
plan) would terminate all payments to AIM Distributors. Termination of the Class
B shares distribution plan or Distribution Agreement does not affect the
obligation of Class B shareholders to pay contingent deferred sales charges.
    
 
   
DISTRIBUTION PLANS. CLASS A AND C PLAN. The Trust has adopted a Master
Distribution Plan applicable to Class A and Class C shares of the Fund (the
"Class A and C Plan") pursuant to Rule 12b-1 under the 1940 Act, to compensate
AIM Distributors for the purpose of financing any activity that is intended to
result in the sale of Class A and Class C shares of the Fund.
    
 
   
Under the Class A and C Plan, the Trust may compensate AIM Distributors an
aggregate amount of 0.50% of the average daily net assets of Class A shares of
the Fund on an annualized basis and an aggregate amount of 1.00% of the average
daily net assets of Class C shares of the Fund on an annualized basis.
    
 
   
The Class A and C Plan is designed to compensate AIM Distributors, on a
quarterly basis, for certain promotional and other sales-related costs, and to
implement a dealer incentive program which provides for periodic payments to
selected dealers who furnish continuing personal shareholder services to their
customers who purchase and own Class A or Class C shares of the Fund. Payments
can also be directed by AIM Distributors to selected institutions who have
entered into service agreements with respect to Class A and Class C shares of
the Fund and who provide continuing personal services to their customers who own
Class A and Class C shares of the Fund. The service fees payable to selected
institutions are calculated at the annual rate of 0.25% of the average daily net
asset value of those Fund shares that are held in such institution's customers'
accounts which were purchased on or after a prescribed date set forth in the
Plan.
    
 
   
Of the aggregate amount payable under the Class A and C Plan, payments to
dealers and other financial institutions that provide continuing personal
shareholder services to their customers who purchase and own shares of the Fund,
in amounts of up to 0.25% of the average net assets of the Fund attributable to
the customers of such dealers or financial institutions are characterized as a
service fee, and payments to dealers and other financial institutions in excess
of such amount and payments to AIM Distributors would be characterized as an
asset-based sales charge pursuant to the Class A and C Plan. The Class A and C
Plan also imposes a cap on the total amount of sales charges, including
asset-based sales charges, that may be paid by the Trust with respect to the
Fund. The Class A and C Plan does not obligate the Fund to reimburse AIM
Distributors for the actual expenses AIM Distributors may incur in fulfilling
its obligations under the Class A and C Plan on behalf of the Fund. Thus, under
the Class A and C Plan, even if AIM Distributors' actual expenses exceed the
    
 
                               Prospectus Page 15
<PAGE>
                             AIM GLOBAL TRENDS FUND
   
fee payable to AIM Distributors thereunder at any given time, the Fund will not
be obligated to pay more than that fee. If AIM Distributors' expenses are less
than the fee it receives, AIM Distributors will retain the full amount of the
fee. Payments pursuant to the Plans are subject to any applicable limitations
imposed by rules of the National Association of Securities Dealers, Inc.
    
 
   
CLASS B PLAN. The Trust has also adopted a master distribution plan applicable
to Class B shares of the Fund (the "Class B Plan"). Under the Class B Plan, the
Fund pays distribution expenses at an annual rate of 1.00% of the average daily
net assets attributable to the Fund's Class B shares. Of such amount the Fund
pays a service fee of 0.25% of the average daily net assets attributable to the
Fund's Class B shares to selected dealers and financial institutions who furnish
continuing personal shareholder services to their customers who purchase and own
Class B shares of the Fund. Any amounts not paid as a service fee would
constitute an asset-based sales charge. Amounts paid in accordance with the
Class B Plan with respect to the Fund may be used to finance any activity
primarily intended to result in the sale of Class B shares of the Fund.
    
 
   
BOTH PLANS. Activities that may be financed under the Class A and C Plan and the
Class B Plan (collectively, the "Plans") include, but are not limited to:
printing of prospectuses and statements of additional information and reports
for other than existing shareholders, overhead, preparation and distribution of
advertising material and sales literature, expense of organizing and conducting
sales seminars, supplemental payments to dealers and other institutions such as
asset-based sales charges or as payments of service fees under shareholder
service arrangements, and the cost of administering the Plans. These amounts
payable by the Fund under the Plans need not be directly related to the expenses
actually incurred by AIM Distributors on behalf of the Fund. Thus, even if AIM
Distributors' actual expenses exceed the fee payable to AIM Distributors
thereunder at any given time, the Trust will not be obligated to pay more than
that fee, and if AIM Distributors' expenses are less than the fee it receives,
AIM Distributors will retain the full amount of the fee. Payments pursuant to
the Plans are subject to any applicable limitations imposed by rules of the
National Association of Securities Dealers, Inc.
    
 
   
Each of the Plans may be terminated at any time by a vote of the majority of
those Trustees who are not "interested persons" of the Trust or by a vote of the
holders of the majority of the outstanding shares of the applicable class.
    
 
   
Under the Plans, AIM Distributors may in its discretion from time to time agree
to waive voluntarily all or any portion of its 12b-1 fee, while retaining its
ability to be reimbursed for such fee prior to the end of each fiscal year.
    
 
   
Under the Plans, certain financial institutions which have entered into service
agreements and which sell shares of the Fund on an agency basis, may receive
payments from the Fund pursuant to the respective Plans. AIM Distributors does
not act as principal, but rather as agent, for the Fund in making such payments.
The Fund will obtain a representation from such financial institutions that they
will either be licensed as dealers as required under applicable state law, or
that they will not engage in activities which would constitute acting as a
"dealer" as defined under applicable state law. Financial intermediaries and any
other person entitled to receive compensation for selling Fund shares may
receive different compensation for selling shares of one class over another.
    
 
   
For additional information concerning the operation of the Plans see the
Statement of Additional Information.
    
 
- --------------------------------------------------------------------------------
 
                               OTHER INFORMATION
 
- --------------------------------------------------------------------------------
 
   
SPECIAL SERVICING AGREEMENT. Until the Special Servicing Agreement described
below its entered into, AIM and the Sub-adviser will pay all the expenses of the
Fund, excluding service and distribution fees and certain non-recurring and
extraordinary expenses. Expenses initially paid by AIM and the Sub-adviser will
include fees and expenses of the Fund's accounting agent; legal, auditing and
accounting expenses; taxes; fees and expenses of A I M Fund Services, Inc. (the
"Transfer Agent"); fees and expenses of registering or qualifying the Fund's
shares for sale; fees and expenses of Trustees, officers and employees of the
Trust who are not affiliated with AIM or the Sub-adviser;
    
 
                               Prospectus Page 16
<PAGE>
                             AIM GLOBAL TRENDS FUND
   
the cost of printing and distributing reports and notices to existing
shareholders; and fees and expenses incurred in connection with membership in
investment company organizations.
    
 
   
An exemptive application has been filed with the SEC requesting relief from
certain provisions of the 1940 Act to permit the Fund, AIM, the Sub-adviser, the
Underlying Theme Funds and the Transfer Agent to enter into a Special Servicing
Agreement ("Agreement"). If exemptive relief is obtained, all the Fund's
expenses except for service and distribution fees and certain non-recurring and
extraordinary expenses will be paid for in accordance with the Agreement. Under
the Agreement, to the extent that the aggregate expenses of the Fund are less
than the estimated savings to the Underlying Theme Funds from the operation of
the Fund, each Underlying Theme Fund will bear those expenses in proportion to
the average daily value of its shares owned by the Fund and/or the number of
shareholder accounts at the Fund. The estimated savings are expected to result
from the reduction of the Underlying Theme Funds' shareholder servicing costs
due to the elimination of separate shareholder accounts that either currently
are or have potential to be invested in the Underlying Theme Funds. The
estimated savings produced by the operation of the Fund may offset most, if not
all, the expenses incurred by the Fund other than service and distribution fees.
To the extent that the Fund's expenses exceed the aggregate financial benefits
to the Underlying Theme Funds, AIM and the Sub-adviser will pay that excess.
    
 
   
ORGANIZATION OF THE TRUST. The Trust was organized as a Delaware business trust
on May 7, 1998. On May 29, 1998, the Trust succeeded to the business of GT
Global Series Trust, a Massachusetts business trust organized on August 26,
1996. The Trust currently consists of one series. From time to time, the Trust
may establish other series, each holding a distinct investment portfolio and
issuing a distinct series of the Trust's shares of beneficial interest. Shares
of each series are entitled to one vote per share (with proportional voting for
fractional shares) and are transferable. Shareholders have no preemptive rights.
Other than the automatic conversion of Class B shares to Class A shares, there
are no conversion rights.
    
 
If any additional series of the Trust are established, on any matter submitted
to a vote of shareholders, shares of each series will be voted by its
shareholders individually when the matter affects the specific interest of that
series only, such as approval of its investment management arrangements. The
shares of the Trust's series would be voted in the aggregate on other matters,
such as the election of Trustees and ratification of the selection by the Board
of Trustees of the Trust's independent accountants.
 
   
Normally there will be no annual meeting of shareholders in any year, except as
required under the 1940 Act. Fund shares do not have cumulative voting rights,
which means that the holders of a majority of the shares voting for the election
of Trustees can elect all the Trustees. A Trustee may be removed at any meeting
of the shareholders of the Trust by a vote of the shareholders owning at least
two-thirds of the outstanding shares. Any Trustee may call a special meeting of
shareholders for any purpose. Furthermore, Trustees shall promptly call a
meeting of shareholders solely for the purpose of removing one or more Trustees
when requested in writing to do so by shareholders holding 10% of the Trust's
outstanding shares.
    
 
   
Pursuant to the Trust's Declaration of Trust, the Trust may issue an unlimited
number of shares of the Fund. Each share of the Fund represents an interest in
the Fund only, has a par value of $0.01 per share, represents an equal
proportionate interest in the Fund with other Fund shares and is entitled to
such dividends and other distributions out of the income earned and gain
realized on the assets belonging to the Fund as may be declared at the
discretion of the Board of Trustees. Each share of the Fund is equal in
earnings, assets and voting privileges, except that each class normally has
exclusive voting rights with respect to its distribution plan and bears the
expenses, if any, related to the distribution of its shares. Fund shares, when
issued, are fully paid and nonassessable.
    
 
   
COUNSEL. The law firm of Kirkpatrick & Lockhart LLP, 1800 Massachusetts Avenue,
N.W., Washington, D.C. 20036-1800, acts as counsel to the Trust and to the Fund.
    
 
                               Prospectus Page 17
<PAGE>
                             AIM GLOBAL TRENDS FUND
 
                                    APPENDIX
 
- --------------------------------------------------------------------------------
 
The chart below shows the allocation of the 38 industries comprising the MSCI to
the Underlying Theme Funds as of April 30, 1998.
 
<TABLE>
<CAPTION>
                                            CONSUMER
                                          PRODUCTS AND    FINANCIAL    HEALTH      INFRA-                    TELECOM-
MSCI AC WORLD INDEX INDUSTRY                SERVICES       SERVICES     CARE     STRUCTURE    RESOURCES    MUNICATIONS
- ----------------------------------------  -------------   ----------   -------   ----------   ----------   ------------
 
<S>                                       <C>             <C>          <C>       <C>          <C>          <C>
Aerospace and Military Technology.......                                           X
Appliances & Household Durables.........     X
Automobiles.............................     X
Banking.................................                    X
Beverages & Tobacco.....................     X
Broadcasting & Publishing...............     X                                                                X
Building Materials & Components.........                                           X
Business & Public Services..............     X
Chemicals...............................                                                        X
Construction & Housing..................                                           X
Data Processing & Reproduction..........     X
Electrical Components, Instruments......                                                                      X
Electrical & Electronics................                                           X                          X
Energy Equipment & Service..............                                                        X
Energy Sources..........................                                                        X
Financial Services......................                    X
Food & Household Products...............     X
Forest Products & Paper.................                                                        X
Gold Mines..............................                                                        X
Health & Personal Care..................                                X
Industrial Components...................                                           X
Insurance...............................                    X
Leisure & Tourism.......................     X
Machinery & Engineering.................                                           X
Merchandising...........................     X
Metals - Non Ferrous....................                                                        X
Metals - Steel..........................                                           X
Misc. Materials & Commodities...........                                                        X
Multi-Industry..........................     X
Real Estate.............................                    X
Recreation, Consumer Goods..............     X
Telecommunications......................                                           X                          X
Textiles & Apparel......................     X
Transportation - Airlines...............                                           X
Transportation - Road & Rail............                                           X
Transportation - Shipping...............                                           X
Utilities Electrical & Gas..............                                           X
Wholesale & International Trade.........     X
</TABLE>
 
                               Prospectus Page 18
<PAGE>
                              AIM INVESTOR'S GUIDE
 
   
     The toll-free number for access to routine account information and to
                           shareholder assistance is
             (800) 959-4246 (7:30 a.m. to 6:00 p.m. Central Time).
    
 
   
                              INVESTOR'S GUIDE TO
                 THE AIM FAMILY OF FUNDS-REGISTERED TRADEMARK-
    
 
- --------------------------------------------------------------------------------
 
INTRODUCTION TO THE AIM FAMILY OF FUNDS
 
    THE AIM FAMILY OF FUNDS consists of the following mutual funds:
 
   
<TABLE>
<S>                                                 <C>
AIM ADVISOR FLEX FUND                               AIM GLOBAL RESOURCES FUND
AIM ADVISOR INTERNATIONAL VALUE FUND                AIM GLOBAL TELECOMMUNICATIONS FUND
AIM ADVISOR LARGE CAP VALUE FUND                    AIM GLOBAL TRENDS FUND
AIM ADVISOR MULTIFLEX FUND                          AIM GLOBAL UTILITIES FUND
AIM ADVISOR REAL ESTATE FUND                        AIM HIGH INCOME MUNICIPAL FUND
AIM AGGRESSIVE GROWTH FUND                          AIM HIGH YIELD FUND
AIM AMERICA VALUE FUND                              AIM INCOME FUND
AIM ASIAN GROWTH FUND                               AIM INTERMEDIATE GOVERNMENT FUND
AIM BALANCED FUND                                   AIM INTERNATIONAL EQUITY FUND
AIM BLUE CHIP FUND                                  AIM INTERNATIONAL GROWTH FUND
AIM CAPITAL DEVELOPMENT FUND                        AIM JAPAN GROWTH FUND
AIM CHARTER FUND                                    AIM LATIN AMERICAN GROWTH FUND
AIM CONSTELLATION FUND                              AIM LIMITED MATURITY TREASURY FUND
AIM DEVELOPING MARKETS FUND                         AIM MID CAP GROWTH FUND
AIM DOLLAR FUND(*)                                  AIM MONEY MARKET FUND(*)
AIM EMERGING MARKETS FUND                           AIM MUNICIPAL BOND FUND
AIM EUROPEAN DEVELOPMENT FUND                       AIM NEW PACIFIC GROWTH FUND
AIM EUROPE GROWTH FUND                              AIM SELECT GROWTH FUND
AIM GLOBAL AGGRESSIVE GROWTH FUND                   AIM SMALL CAP EQUITY FUND
AIM GLOBAL CONSUMER PRODUCTS AND SERVICES FUND      AIM SMALL CAP OPPORTUNITIES FUND
AIM GLOBAL FINANCIAL SERVICES FUND                  AIM STRATEGIC INCOME FUND
AIM GLOBAL GOVERNMENT INCOME FUND                   AIM TAX-EXEMPT BOND FUND OF CONNECTICUT
AIM GLOBAL GROWTH FUND                              AIM TAX-EXEMPT CASH FUND(*)
AIM GLOBAL GROWTH & INCOME FUND                     AIM TAX-FREE INTERMEDIATE FUND
AIM GLOBAL HEALTH CARE FUND                         AIM VALUE FUND
AIM GLOBAL HIGH INCOME FUND                         AIM WEINGARTEN FUND
AIM GLOBAL INCOME FUND                              AIM WORLDWIDE GROWTH FUND
AIM GLOBAL INFRASTRUCTURE FUND
</TABLE>
    
 
(*) Class A shares of AIM TAX-EXEMPT CASH FUND and AIM DOLLAR FUND and AIM Cash
    Reserve Shares of AIM MONEY MARKET FUND are offered to investors at net
    asset value, without payment of a sales charge, as described below. Other
    funds, including the Class A, Class B and Class C shares of AIM MONEY MARKET
    FUND, are sold with an initial sales charge or subject to a contingent
    deferred sales charge upon redemption, as described below.
 
    IT IS IMPORTANT FOR SHAREHOLDERS CONSIDERING AN EXCHANGE TO CAREFULLY REVIEW
THE PROSPECTUS OF THE FUND WHOSE SHARES WILL BE ACQUIRED IN AN EXCHANGE. THIS
PROSPECTUS DOES NOT CONSTITUTE AN OFFER TO SELL SHARES OF ANY FUND OTHER THAN
THE FUND(S) NAMED ON THE COVER PAGE OF THIS PROSPECTUS.
- --------------------------------------------------------------------------------
 
HOW TO PURCHASE SHARES
 
    HOW TO OPEN AN ACCOUNT.  In order to purchase shares of any of The AIM
Family of Funds ("AIM Funds"), an investor must submit a fully completed new
Account Application form directly to A I M Fund Services, Inc. ("AFS" or the
"Transfer Agent") or through any dealer authorized by A I M Distributors, Inc.
("AIM Distributors") to sell shares of the AIM Funds.
 
   
    Accounts submitted without a correct, certified taxpayer identification
number or, alternatively, a completed Internal Revenue Service ("IRS") Form W-8
(for non-resident aliens) or Form W-9 (certifying exempt status) accompanying
the registration information will be subject to backup withholding. See the
Account Application for applicable IRS penalties. The minimum initial investment
is $500, except for accounts initially established through an Automatic
Investment Plan, which requires a special authorization form (see "Special
Plans") and for certain retirement accounts. The minimum initial investment for
accounts established with an Automatic Investment Plan is $50. The minimum
initial investment for an Individual Retirement Arrangement ("IRA") or Roth IRA
is $250. There are no minimum initial investment requirements applicable to
money-purchase/profit-sharing plans, 401(k) plans, Simplified Employee Pension
("SEP") accounts, Savings Incentive Match Plans for Employee IRA ("SIMPLE IRA")
accounts, 403(b) plans or 457 (state deferred compensation) plans (except that
the minimum initial investment for salary deferrals for such
    
 
                                      A-1
<PAGE>
                              AIM INVESTOR'S GUIDE
   
plans is $25), or for investment of dividends and distributions of any of the
AIM Funds into any existing AIM Funds account.
    
 
    AFS' mailing address is:
 
                                 A I M Fund Services, Inc.
                                 P.O. Box 4739
                                 Houston, TX 77210-4739
 
    For additional information or assistance, investors should call the Client
Services Department of AFS at:
 
                                 (800) 959-4246
 
   
    Shares of any AIM Funds not named on the cover of this Prospectus, as well
as Advisor Class shares of certain AIM Funds, are offered pursuant to separate
prospectuses. Copies of other prospectuses may be obtained by calling (800)
347-4246.
    
 
    INITIAL AND SUBSEQUENT PURCHASES BY WIRE:  To insure prompt credit to his
account, an investor or his dealer should call AFS' Client Services Department
at (800) 959-4246 prior to sending a wire to receive a reference number for the
wire. The following wire instructions should be used:
 
<TABLE>
<S>                                  <C>
Beneficiary Bank ABA/Routing #:      113000609
Beneficiary Account Number:          00100366807
Beneficiary Account Name:            A I M Fund Services, Inc.
RFB:                                 Fund name, Reference Number (16 character limit)
OBI:                                 Shareholder Name, Shareholder Account Number
                                      (70 character limit)
</TABLE>
 
   
    HOW TO PURCHASE ADDITIONAL SHARES.  Additional shares may be purchased
directly through AIM Distributors or through any dealer who has entered into an
agreement with AIM Distributors. The minimum investment for subsequent purchases
is $50. The minimum employee salary deferral investment for participants in
money-purchase/profit sharing plans, 401(k), IRA/SEP, 403(b) or 457 plans is
$25. There are no such minimum investment requirements for investment of
dividends and distributions of any of the AIM Funds into any other existing AIM
Funds account.
    
 
    BY MAIL:  Investors must indicate their account number and the name of the
Fund being purchased. The remittance slip from a confirmation statement should
be used for this purpose, and sent to AFS.
 
    BY AIM BANK CONNECTION-SM-:  To purchase additional shares by electronic
funds transfer, please contact the Client Services Department of AFS for
details.
- --------------------------------------------------------------------------------
TERMS AND CONDITIONS OF PURCHASE OF THE AIM FUNDS
 
   
    Shares of the AIM Funds, including Class A shares (the "Class A shares") of
AIM ADVISOR FLEX FUND, AIM ADVISOR INTERNATIONAL VALUE FUND, AIM ADVISOR LARGE
CAP VALUE FUND, AIM ADVISOR MULTIFLEX FUND, AIM ADVISOR REAL ESTATE FUND, AIM
AGGRESSIVE GROWTH FUND, AIM AMERICA VALUE FUND, AIM ASIAN GROWTH FUND, AIM
BALANCED FUND, AIM BLUE CHIP FUND, AIM CAPITAL DEVELOPMENT FUND, AIM CHARTER
FUND, AIM CONSTELLATION FUND, AIM DEVELOPING MARKETS FUND, AIM DOLLAR FUND, AIM
EMERGING MARKETS FUND, AIM EUROPEAN DEVELOPMENT FUND, AIM EUROPE GROWTH FUND,
AIM GLOBAL AGGRESSIVE GROWTH FUND, AIM GLOBAL CONSUMER PRODUCTS AND SERVICES
FUND, AIM GLOBAL FINANCIAL SERVICES FUND, AIM GLOBAL GOVERNMENT INCOME FUND, AIM
GLOBAL GROWTH FUND, AIM GLOBAL GROWTH & INCOME FUND, AIM GLOBAL HEALTH CARE
FUND, AIM GLOBAL HIGH INCOME FUND, AIM GLOBAL INCOME FUND, AIM GLOBAL
INFRASTRUCTURE FUND, AIM GLOBAL RESOURCES FUND, AIM GLOBAL TELECOMMUNICATIONS
FUND, AIM GLOBAL TRENDS FUND, AIM GLOBAL UTILITIES FUND, AIM HIGH INCOME
MUNICIPAL FUND, AIM HIGH YIELD FUND, AIM INCOME FUND, AIM INTERMEDIATE
GOVERNMENT FUND, AIM INTERNATIONAL EQUITY FUND, AIM INTERNATIONAL GROWTH FUND,
AIM JAPAN GROWTH FUND, AIM LATIN AMERICAN GROWTH FUND, AIM LIMITED MATURITY
TREASURY FUND, AIM MID CAP GROWTH FUND, AIM MONEY MARKET FUND, AIM MUNICIPAL
BOND FUND, AIM NEW PACIFIC GROWTH FUND, AIM SELECT GROWTH FUND, AIM SMALL CAP
EQUITY FUND, AIM SMALL CAP OPPORTUNITIES FUND, AIM STRATEGIC INCOME FUND, AIM
TAX-EXEMPT BOND FUND OF CONNECTICUT, AIM TAX-EXEMPT CASH FUND, AIM TAX-FREE
INTERMEDIATE FUND, AIM VALUE FUND, AIM WEINGARTEN FUND and AIM WORLDWIDE GROWTH
FUND, collectively (other than AIM AGGRESSIVE GROWTH FUND, AIM LIMITED MATURITY
TREASURY FUND, AIM TAX-EXEMPT BOND FUND OF CONNECTICUT, AIM TAX-EXEMPT CASH FUND
and AIM TAX-FREE INTERMEDIATE FUND), the "Multiple Class Funds," may be
purchased at their respective net asset value plus a sales charge as indicated
below, except that Class A shares of AIM DOLLAR FUND and AIM TAX-EXEMPT
    
 
                                      A-2
<PAGE>
                              AIM INVESTOR'S GUIDE
   
CASH FUND and AIM Cash Reserve Shares of AIM MONEY MARKET FUND are sold without
a sales charge and Class B shares (the "Class B shares") and Class C shares (the
"Class C shares") of the Multiple Class Funds which offer such classes are sold
at net asset value subject to a contingent deferred sales charge payable upon
certain redemptions. Class B shares of AIM DOLLAR FUND, however, may be acquired
only by an exchange of shares of another AIM Fund. These contingent deferred
sales charges are described under the caption "How to Redeem Shares -- Multiple
Distribution System." Securities dealers and other persons entitled to receive
compensation for selling or servicing shares of a Multiple Class Fund may
receive different compensation for selling or servicing one particular class of
shares over another class in the same Multiple Class Fund. Factors an investor
should consider prior to purchasing Class A, Class B or Class C shares (or, if
applicable, AIM Cash Reserve Shares) of a Multiple Class Fund are described
below under "Special Information Relating to Multiple Class Funds." For
information on purchasing any of the AIM Funds and to receive a prospectus,
please call (800) 347-4246. As described below, the sales charge otherwise
applicable to a purchase of shares of a fund may be reduced if certain
conditions are met. In order to take advantage of a reduced sales charge, the
prospective investor or his dealer must advise AIM Distributors that the
conditions for obtaining a reduced sales charge have been met. Net asset value
is determined in the manner described under the caption "Determination of Net
Asset Value."
    
 
   
    The following Multiple Class Funds sometimes are referred to herein as the
"AIM/GT Funds": AIM AMERICA VALUE FUND, AIM DEVELOPING MARKETS FUND, AIM DOLLAR
FUND, AIM EMERGING MARKETS FUND, AIM EUROPE GROWTH FUND, AIM GLOBAL CONSUMER
PRODUCTS AND SERVICES FUND, AIM GLOBAL FINANCIAL SERVICES FUND, AIM GLOBAL
GOVERNMENT INCOME FUND, AIM GLOBAL GROWTH & INCOME FUND, AIM GLOBAL HEALTH CARE
FUND, AIM GLOBAL HIGH INCOME FUND, AIM GLOBAL INFRASTRUCTURE FUND, AIM GLOBAL
RESOURCES FUND, AIM GLOBAL TELECOMMUNICATIONS FUND, AIM GLOBAL TRENDS FUND, AIM
INTERNATIONAL GROWTH FUND, AIM JAPAN GROWTH FUND, AIM LATIN AMERICAN GROWTH
FUND, AIM MID CAP GROWTH FUND, AIM NEW PACIFIC GROWTH FUND, AIM SMALL CAP EQUITY
FUND, AIM STRATEGIC INCOME FUND and AIM WORLDWIDE GROWTH FUND.
    
 
    The following tables show the sales charge and dealer concession at various
investment levels for the AIM Funds.
 
SALES CHARGES AND DEALER CONCESSIONS
 
   
    GROUP I.  Certain AIM Funds are currently sold with a sales charge ranging
from 5.50% to 2.00% of the offering price on purchases of less than $1,000,000.
These AIM Funds include Class A shares of each of AIM ADVISOR FLEX FUND, AIM
ADVISOR INTERNATIONAL VALUE FUND, AIM ADVISOR LARGE CAP VALUE FUND, AIM ADVISOR
MULTIFLEX FUND, AIM AGGRESSIVE GROWTH FUND, AIM AMERICA VALUE FUND, AIM ASIAN
GROWTH FUND, AIM BLUE CHIP FUND, AIM CAPITAL DEVELOPMENT FUND, AIM CHARTER FUND,
AIM CONSTELLATION FUND, AIM EUROPEAN DEVELOPMENT FUND, AIM EUROPE GROWTH FUND,
AIM GLOBAL UTILITIES FUND, AIM GLOBAL GROWTH & INCOME FUND, AIM INTERNATIONAL
EQUITY FUND, AIM INTERNATIONAL GROWTH FUND, AIM JAPAN GROWTH FUND, AIM MID CAP
GROWTH FUND, AIM MONEY MARKET FUND, AIM NEW PACIFIC GROWTH FUND, AIM SELECT
GROWTH FUND, AIM SMALL CAP EQUITY FUND, AIM SMALL CAP OPPORTUNITIES FUND, AIM
VALUE FUND, AIM WEINGARTEN FUND and AIM WORLDWIDE GROWTH FUND.
    
 
<TABLE>
<CAPTION>
                                                                                                                    DEALER
                                                                                     INVESTOR'S SALES CHARGE      CONCESSION
                                                                                   ----------------------------  -------------
                                                                                       AS A           AS A           AS A
                                                                                    PERCENTAGE     PERCENTAGE     PERCENTAGE
                                                                                      OF THE         OF THE         OF THE
                                                                                      PUBLIC           NET          PUBLIC
                                                                                     OFFERING        AMOUNT        OFFERING
AMOUNT OF INVESTMENT IN SINGLE TRANSACTION                                             PRICE        INVESTED         PRICE
- ---------------------------------------------------------------------------------  -------------  -------------  -------------
<S>                                                                                <C>            <C>            <C>
Less than $25,000................................................................        5.50 %         5.82 %         4.75 %
$25,000 but less than $50,000....................................................        5.25           5.54           4.50
$50,000 but less than $100,000...................................................        4.75           4.99           4.00
$100,000 but less than $250,000..................................................        3.75           3.90           3.00
$250,000 but less than $500,000..................................................        3.00           3.09           2.50
$500,000 but less than $1,000,000................................................        2.00           2.04           1.60
</TABLE>
 
    There is no sales charge on purchases of $1,000,000 or more; however, AIM
Distributors may pay a dealer concession and/or advance a service fee on such
transactions. See "All Groups of AIM Funds." PURCHASES OF $1,000,000 OR MORE ARE
AT NET ASSET VALUE, SUBJECT TO A CONTINGENT DEFERRED SALES CHARGE OF 1% IF
SHARES ARE REDEEMED PRIOR TO 18 MONTHS FROM THE DATE SUCH SHARES WERE PURCHASED,
AS DESCRIBED UNDER THE CAPTION "HOW TO REDEEM SHARES -- CONTINGENT DEFERRED
SALES CHARGE PROGRAM FOR LARGE PURCHASES."
 
                                      A-3
<PAGE>
                              AIM INVESTOR'S GUIDE
 
   
    GROUP II.  Certain AIM Funds are currently sold with a sales charge ranging
from 4.75% to 2.00% of the offering price on purchases of less than $1,000,000.
These AIM Funds are: the Class A shares of each of AIM ADVISOR REAL ESTATE FUND,
AIM BALANCED FUND, AIM DEVELOPING MARKETS FUND, AIM EMERGING MARKETS FUND, AIM
GLOBAL AGGRESSIVE GROWTH FUND, AIM GLOBAL CONSUMER PRODUCTS AND SERVICES FUND,
AIM GLOBAL FINANCIAL SERVICES FUND, AIM GLOBAL GOVERNMENT INCOME FUND, AIM
GLOBAL GROWTH FUND, AIM GLOBAL HEALTH CARE FUND, AIM GLOBAL HIGH INCOME FUND,
AIM GLOBAL INCOME FUND, AIM GLOBAL INFRASTRUCTURE FUND, AIM GLOBAL RESOURCES
FUND, AIM GLOBAL TELECOMMUNICATIONS FUND, AIM GLOBAL TRENDS FUND, AIM HIGH
INCOME MUNICIPAL FUND, AIM HIGH YIELD FUND, AIM INCOME FUND, AIM INTERMEDIATE
GOVERNMENT FUND, AIM LATIN AMERICAN GROWTH FUND, AIM MUNICIPAL BOND FUND, AIM
STRATEGIC INCOME FUND and AIM TAX-EXEMPT BOND FUND OF CONNECTICUT.
    
 
<TABLE>
<CAPTION>
                                                                                                                    DEALER
                                                                                     INVESTOR'S SALES CHARGE      CONCESSION
                                                                                   ----------------------------  -------------
                                                                                       AS A           AS A           AS A
                                                                                    PERCENTAGE     PERCENTAGE     PERCENTAGE
                                                                                      OF THE         OF THE         OF THE
                                                                                      PUBLIC           NET          PUBLIC
                                                                                     OFFERING        AMOUNT        OFFERING
AMOUNT OF INVESTMENT IN SINGLE TRANSACTION                                             PRICE        INVESTED         PRICE
- ---------------------------------------------------------------------------------  -------------  -------------  -------------
<S>                                                                                <C>            <C>            <C>
Less than $50,000................................................................        4.75 %         4.99 %         4.00 %
$50,000 but less than $100,000...................................................        4.00           4.17           3.25
$100,000 but less than $250,000..................................................        3.75           3.90           3.00
$250,000 but less than $500,000..................................................        2.50           2.56           2.00
$500,000 but less than $1,000,000................................................        2.00           2.04           1.60
</TABLE>
 
   
    There is no sales charge on purchases of $1,000,000 or more; however, AIM
Distributors may pay a dealer concession and/or advance a service fee on such
transactions. See "All Groups of AIM Funds." PURCHASES OF $1,000,000 OR MORE ARE
AT NET ASSET VALUE, SUBJECT TO A CONTINGENT DEFERRED SALES CHARGE OF 1% IF
SHARES ARE REDEEMED PRIOR TO 18 MONTHS FROM THE DATE SUCH SHARES WERE PURCHASED,
AS DESCRIBED UNDER THE CAPTION "HOW TO REDEEM SHARES -- CONTINGENT DEFERRED
SALES CHARGE PROGRAM FOR LARGE PURCHASES."
    
 
    GROUP III.  Certain AIM Funds are currently sold with a sales charge ranging
from 1.00% to 0.50% of the offering price on purchases of less than $1,000,000.
These AIM Funds are the Class A shares of each of AIM LIMITED MATURITY TREASURY
FUND and AIM TAX-FREE INTERMEDIATE FUND.
 
<TABLE>
<CAPTION>
                                                                                                                    DEALER
                                                                                     INVESTOR'S SALES CHARGE      CONCESSION
                                                                                   ----------------------------  -------------
                                                                                       AS A           AS A           AS A
                                                                                    PERCENTAGE     PERCENTAGE     PERCENTAGE
                                                                                      OF THE         OF THE         OF THE
                                                                                      PUBLIC           NET          PUBLIC
                                                                                     OFFERING        AMOUNT        OFFERING
AMOUNT OF INVESTMENT IN SINGLE TRANSACTION                                             PRICE        INVESTED         PRICE
- ---------------------------------------------------------------------------------  -------------  -------------  -------------
<S>                                                                                <C>            <C>            <C>
Less than $100,000...............................................................        1.00 %         1.01 %         0.75 %
$100,000 but less than $250,000..................................................        0.75           0.76           0.50
$250,000 but less than $1,000,000................................................        0.50           0.50           0.40
</TABLE>
 
    There is no sales charge on purchases of $1,000,000 or more; however, AIM
Distributors may pay a dealer concession and/or advance a service fee on such
transactions.
 
    ALL GROUPS OF AIM FUNDS.  AIM Distributors may elect to re-allow the entire
initial sales charge to dealers for all sales with respect to which orders are
placed with AIM Distributors during a particular period. Dealers to whom
substantially the entire sales charge is re-allowed may be deemed to be
"underwriters" as that term is defined under the Securities Act of 1933.
 
    In addition to amounts paid to dealers as a dealer concession out of the
initial sales charge paid by investors, AIM Distributors may, from time to time,
at its expense or as an expense for which it may be compensated under a
distribution plan, if applicable, pay a bonus or other consideration or
incentive to dealers who sell a minimum dollar amount of the shares of the AIM
Funds during a specified period of time. In some instances, these incentives may
be offered only to certain dealers who have sold or may sell significant amounts
of shares. At the option of the dealer, such incentives may take the form of
payment for travel expenses, including lodging, incurred in connection with
trips taken by qualifying registered representatives and their families to
places within or outside the United States. The total amount of such additional
bonus
 
                                      A-4
<PAGE>
                              AIM INVESTOR'S GUIDE
payments or other consideration shall not exceed 0.25% of the public offering
price of the shares sold. Any such bonus or incentive programs will not change
the price paid by investors for the purchase of the applicable AIM Fund's shares
or the amount that any particular AIM Fund will receive as proceeds from such
sales. Dealers may not use sales of the AIM Funds' shares to qualify for any
incentives to the extent that such incentives may be prohibited by the laws of
any state.
 
    AIM Distributors may make payments to dealers and institutions who are
dealers of record for purchases of $1 million of more of Class A shares (or
shares which normally involve payment of initial sales charges), which are sold
at net asset value and are subject to a contingent deferred sales charge, for
all AIM Funds other than Class A shares of each of AIM LIMITED MATURITY TREASURY
FUND and AIM TAX-FREE INTERMEDIATE FUND as follows: 1% of the first $2 million
of such purchases, plus 0.80% of the next $1 million of such purchases, plus
0.50% of the next $17 million of such purchases, plus 0.25% of amounts in excess
of $20 million of such purchases. See "Contingent Deferred Sales Charge Program
for Large Purchases." AIM Distributors may make payments to dealers and
institutions who are dealers of record for purchases of $1 million or more of
Class A shares (or shares which normally involve payment of initial sales
charges), and which are sold at net asset value and are not subject to a
contingent deferred sales charge, in an amount up to 0.10% of such purchases of
Class A shares of AIM LIMITED MATURITY TREASURY FUND, and in an amount up to
0.25% of such purchases of Class A shares of AIM TAX-FREE INTERMEDIATE FUND.
 
    AIM Distributors may pay sales commissions to dealers and institutions who
sell Class B shares of the AIM Funds at the time of such sales. Payments with
respect to Class B shares will equal 4.00% of the purchase price of the Class B
shares sold by the dealer or institution, and will consist of a sales commission
equal to 3.75% of the purchase price of the Class B shares sold plus an advance
of the first year service fee of 0.25% with respect to such shares. The portion
of the payments to AIM Distributors under the Class B Plan which constitutes an
asset-based sales charge (0.75%) is intended in part to permit AIM Distributors
to recoup a portion of such sales commissions plus financing costs.
 
   
    AIM Distributors may pay sales commissions to dealers and institutions who
sell Class C shares of the AIM Funds at the time of such sales. Payments with
respect to Class C shares will equal 1.00% of the purchase price of the Class C
shares sold by the dealer or institution, and will consist of a sales commission
of 0.75% of the purchase price of the Class C shares sold plus an advance of the
first year service fee of 0.25% with respect to such shares. AIM Distributors
will retain all payments received by it relating to Class C shares for the first
year after they are purchased. The portion of the payments to AIM Distributors
under the Class A and C Plan attributable to Class C shares which constitutes an
asset-based sales charge (0.75%) is intended in part to permit AIM Distributors
to recoup a portion of on-going sales commissions to dealers plus financing
costs, if any. After the first full year, AIM Distributors will make such
payments quarterly to dealers and institutions based on the average net asset
value of Class C shares which are attributable to shareholders for whom the
dealers and institutions are designated as dealers of record. These commissions
on Class C shares are not paid on sales to investors exempt from the CDSC,
including Class C shareholders of record on April 30, 1995 who purchase
additional shares in any of the Funds on or after May 1, 1995, and in
circumstances where AIM Distributors grants an exemption on particular
transactions.
    
 
   
    TIMING OF PURCHASE ORDERS.  Orders for the purchase of shares of an AIM Fund
(other than AIM MONEY MARKET FUND, as described below) received prior to the
close of regular trading on the New York Stock Exchange ("NYSE"), which is
generally 4:00 p.m. Eastern Time (and which is hereinafter referred to as "NYSE
Close"), on any business day of an AIM Fund will be confirmed at the price next
determined. Orders received after NYSE Close will be confirmed at the price
determined on the next business day of the AIM Fund. Certain financial
institutions (or their designees) may be authorized to accept purchase orders on
behalf of the AIM Funds. Orders received by authorized institutions (or their
designees) before NYSE Close will be deemed to have been received by an AIM Fund
on such day and will be effected that day, provided that such orders are
transmitted to the Transfer Agent prior to the time set for receipt of such
orders. It is the responsibility of the dealer/financial institution to ensure
that all orders are transmitted on a timely basis to the Transfer Agent. Any
loss resulting from the dealer/financial institution's failure to submit an
order within the prescribed time frame will be borne by that dealer/financial
institution. Please see "How to Purchase Shares -- Purchases by Wire" for
information on obtaining a reference number for wire orders, which will
facilitate the handling of such orders and ensure prompt credit to an investor's
account. A "business day" of an AIM Fund is any day on which the NYSE is open
for business. It is expected that the NYSE will be closed
    
 
                                      A-5
<PAGE>
                              AIM INVESTOR'S GUIDE
during the next twelve months on Saturdays and Sundays and on the days on which
New Year's Day, Martin Luther King, Jr. Day, Presidents' Day, Good Friday,
Memorial Day, Independence Day, Labor Day, Thanksgiving Day and Christmas Day
are observed by the NYSE.
 
    An investor who uses a check to purchase shares will be credited with the
full number of shares purchased at the time of receipt of the purchase order, as
previously described. However, in the event of a redemption or exchange of such
shares, the investor may be required to wait up to ten business days before the
redemption proceeds are sent. This delay is necessary in order to ensure that
the check has cleared. If the check does not clear, or if any investment order
must be cancelled due to nonpayment, the investor will be responsible for any
resulting loss to an AIM Fund or to AIM Distributors.
 
   
    SPECIAL INFORMATION RELATING TO MULTIPLE CLASS FUNDS.  The Multiple Class
Funds currently offer two or more classes of shares through separate
distribution systems (the "Multiple Distribution System"). Although each class
of shares of a particular Multiple Class Fund represents an interest in the same
portfolio of investments, each class is subject to a different distribution
structure and, as a result, differing expenses. This Multiple Distribution
System allows investors to select the class that is best suited to the
investor's needs and objectives. In considering the options afforded by the
Multiple Distribution System, investors should consider both the applicable
initial sales charge or contingent deferred sales charge, as well as the ongoing
expenses borne by each class of shares and other relevant factors, such as
whether his or her investment goals are long-term or short-term.
    
 
   
    CLASS A SHARES generally are sold subject to the initial sales charges
    described above and are subject to the other fees and expenses described
    herein. Class A shares of AIM MONEY MARKET FUND are designed to meet the
    needs of an investor who wishes to establish a dollar cost averaging
    program, pursuant to which Class A shares an investor owns may be exchanged
    at net asset value for Class A shares of another Multiple Class Fund or
    shares of another AIM Fund which is not a Multiple Class Fund, subject to
    the terms and conditions described under the caption "Exchange Privilege --
    Terms and Conditions of Exchanges."
    
 
    CLASS B SHARES are sold without an initial sales charge. Thus, the entire
    purchase price of Class B shares is immediately invested in Class B shares.
    Class B shares are subject, however, to Rule 12b-1 Plan payments of 1.00%
    per annum on the average daily net assets of a Multiple Class Fund
    attributable to Class B shares. See the discussion under the caption
    "Management -- Distribution Plans." In addition, Class B shares redeemed
    within six years from the date such shares were purchased are subject to a
    contingent deferred sales charge ranging from 5% for redemptions made within
    the first year to 1% for redemptions made within the sixth year. No
    contingent deferred sales charge will be imposed if Class B shares are
    redeemed after six years from the date such shares were purchased.
    Redemptions of Class B shares and associated charges are further described
    under the caption "How to Redeem Shares -- Multiple Distribution System."
 
   
    Class B shares will automatically convert into Class A shares of the same
    Multiple Class Fund (together with a pro rata portion of all Class B shares
    acquired through the reinvestment of dividends and other distributions)
    eight years from the end of the calendar month in which the purchase of
    Class B shares was made. Class B shares of AIM GLOBAL TRENDS FUND that were
    outstanding on May 29, 1998 and which are continuously held by the
    shareholder, automatically convert to Class A shares of AIM GLOBAL TRENDS
    FUND seven years from the end of the calendar month in which the purchase of
    such Class B shares was made. If a shareholder exchanges Class B shares of
    AIM GLOBAL TRENDS FUND that were outstanding on, and continuously held
    since, May 29, 1998 for Class B shares of any other AIM Fund, such Class B
    shares will be subject to the eight year conversion feature applicable to
    Class B shares of all other AIM Funds. Following such conversion of their
    Class B shares, investors will be relieved of the higher Rule 12b-1 Plan
    payments associated with Class B shares. See "Management -- Distribution
    Plans."
    
 
   
    AIM Cash Reserve Shares of AIM MONEY MARKET FUND are sold without an initial
    sales charge and are not subject to a contingent deferred sales charge;
    however, they are subject to the other fees and expenses described in the
    prospectus for AIM MONEY MARKET FUND.
    
 
    TIMING OF PURCHASE, EXCHANGE AND REDEMPTION ORDERS (AIM MONEY MARKET FUND
ONLY).  Orders for purchases, exchanges and redemptions of shares of AIM MONEY
MARKET FUND received prior to 12:00 noon
 
                                      A-6
<PAGE>
                              AIM INVESTOR'S GUIDE
Eastern Time or NYSE Close on any business day of the Fund will be confirmed at
the price next determined. Net asset value is normally determined at 12:00 noon
Eastern Time and NYSE Close on each business day of AIM MONEY MARKET FUND.
 
    SPECIAL INFORMATION RELATING TO AIM MONEY MARKET FUND, AIM TAX-EXEMPT CASH
FUND and AIM DOLLAR FUND (THE "MONEY MARKET FUNDS").  Because each Money Market
Fund uses the amortized cost method of valuing the securities it holds and
rounds its per share net asset value to the nearest whole cent, it is
anticipated that the net asset value of the shares of such funds will remain
constant at $1.00 per share. However, there is no assurance that each Money
Market Fund can maintain a $1.00 net asset value per share. In order to earn
dividends with respect to AIM MONEY MARKET FUND on the same day that a purchase
is made, purchase payments in the form of federal funds must be received by the
Transfer Agent before 12:00 noon Eastern Time on that day. Purchases made by
payments in any other form, or payments in the form of federal funds received
after such time but prior to NYSE Close, will begin to earn dividends on the
next business day following the date of purchase. The Money Market Funds
generally will not issue share certificates but will record investor holdings in
noncertificate form and regularly advise the shareholder of his ownership
position.
 
    SHARE CERTIFICATES.  Share certificates for all AIM Funds will be issued
upon written request by a shareholder to AIM Distributors or the Transfer Agent.
Otherwise, such shares will be held on the shareholder's behalf by the
applicable AIM Fund(s) and be recorded on the books of such fund(s). See
"Exchange Privilege -- Exchanges by Telephone" and "How to Redeem Shares --
Redemptions by Telephone" for restrictions applicable to shares issued in
certificate form. Please note that certificates will not be issued for shares
held in prototype retirement plans.
 
    MINIMUM ACCOUNT BALANCE.  If (1) an account opened in a fund has been in
effect for at least one year and the shareholder has not made an additional
purchase in that account within the preceding six calendar months and (2) the
value of such account drops below $500 for three consecutive months as a result
of redemptions or exchanges, the fund has the right to redeem the account, after
giving the shareholder 60 days' prior written notice, unless the shareholder
makes additional investments within the notice period to bring the account value
up to $500. If a fund determines that a shareholder has provided incorrect
information in opening an account with a fund or in the course of conducting
subsequent transactions with the fund related to such account, the fund may, in
its discretion, redeem the account and distribute the proceeds of such
redemption to the shareholder.
 
REDUCTIONS IN INITIAL SALES CHARGES
 
   
    Reductions in the initial sales charges shown in the sales charge tables
(quantity discounts) apply to purchases of Class A shares of the AIM Funds that
are otherwise subject to an initial sales charge, provided that such purchases
are made by a "purchaser" as hereinafter defined. Purchases of Class A shares of
AIM TAX-EXEMPT CASH FUND and AIM DOLLAR FUND, AIM Cash Reserve Shares of AIM
MONEY MARKET FUND and Class B and Class C shares of the Multiple Class Funds
will not be taken into account in determining whether a purchase qualifies for a
reduction in initial sales charges.
    
 
    The term "purchaser" means:
 
- - an individual and his or her spouse and children, including any trust
  established exclusively for the benefit of any such person; or a pension,
  profit-sharing, or other benefit plan established exclusively for the benefit
  of any such person, such as an IRA, Roth IRA, a single-participant
  money-purchase/profit-sharing plan or an individual participant in a 403(b)
  plan (unless such 403(b) plan qualifies as the purchaser as defined below);
 
- - a 403(b) plan, the employer/sponsor of which is an organization described
  under Section 501(c)(3) of the Internal Revenue Code of 1986, as amended (the
  "Code"), provided that:
 
      a. the employer/sponsor must submit contributions for all participating
         employees in a single contribution transmittal (i.e., the funds will
         not accept contributions submitted with respect to individual
         participants);
 
      b. each transmittal must be accompanied by a single check or wire
         transfer; and
 
      c. all new participants must be added to the 403(b) plan by submitting an
         application on behalf of each new participant with the contribution
         transmittal;
 
                                      A-7
<PAGE>
                              AIM INVESTOR'S GUIDE
 
- - a trustee or fiduciary purchasing for a single trust, estate or single
  fiduciary account (including a pension, profit-sharing or other employee
  benefit trust created pursuant to a plan qualified under Section 401 of the
  Code) and 457 plans, although more than one beneficiary or participant is
  involved;
 
   
- - a Simplified Employee Pension ("SEP"), Salary Reduction and other Elective
  Simplified Employee Pension account ("SARSEP"), or Savings Incentive Match
  Plans for Employees IRA ("SIMPLE IRA") where the employer has notified AIM
  Distributors in writing that all of its related employee SEP, SARSEP or SIMPLE
  IRA accounts should be linked;
    
 
- - any other organized group of persons, whether incorporated or not, provided
  the organization has been in existence for at least six months and has some
  purpose other than the purchase at a discount of redeemable securities of a
  registered investment company; or
 
- - the discretionary advised accounts of A I M Advisors, Inc. ("AIM") or A I M
  Capital Management, Inc. ("AIM Capital").
 
    Investors or dealers seeking to qualify orders for a reduced initial sales
charge must identify such orders and, if necessary, support their qualification
for the reduced charge. AIM Distributors reserves the right to determine whether
any purchaser is entitled, by virtue of the foregoing definition, to the reduced
sales charge. No person or entity may distribute shares of the AIM Funds without
payment of the applicable sales charge other than to persons or entities who
qualify for a reduction in the sales charge provided herein.
 
    (1) LETTERS OF INTENT.  A purchaser, as previously defined, may pay reduced
initial sales charges by completing the appropriate section of the account
application and by fulfilling a Letter of Intent ("LOI"). The LOI privilege is
also available to holders of the Connecticut General Guaranteed Account,
established for tax qualified group annuities, for contracts purchased on or
before June 30, 1992. The LOI confirms such purchaser's intention as to the
total investment to be made in shares of the AIM Funds (except for (i) Class A
shares of AIM DOLLAR FUND, AIM TAX-EXEMPT CASH FUND, and AIM Cash Reserve Shares
of AIM MONEY MARKET FUND and (ii) Class B and Class C shares of the Multiple
Class Funds) within the following 13 consecutive months. By marking the LOI
section on the account application and by signing the account application, the
purchaser indicates that he understands and agrees to the terms of the LOI and
is bound by the provisions described below.
 
   
    Each purchase of fund shares normally subject to an initial sales charge
made during the 13-month period will be made at the public offering price
applicable to a single transaction of the total dollar amount indicated by the
LOI, as described under "Sales Charges and Dealer Concessions." It is the
purchaser's responsibility at the time of purchase to specify the account
numbers that should be considered in determining the appropriate sales charge.
The offering price may be further reduced as described under "Rights of
Accumulation" if the Transfer Agent is advised of all other accounts at the time
of the investment. Shares acquired through reinvestment of dividends and capital
gain distributions will not be applied to the LOI. At any time during the
13-month period after meeting the original obligation, a purchaser may revise
his intended investment amount upward by submitting a written and signed
request. Such a revision will not change the original expiration date. By
signing an LOI, a purchaser is not making a binding commitment to purchase
additional shares, but if purchases made within the 13-month period do not total
the amount specified, the investor will pay the increased amount of sales charge
as described below. Purchases made within 90 days before signing an LOI will be
applied toward completion of the LOI. The LOI effective date will be the date of
the first purchase with the 90-day period. The Transfer Agent will process
necessary adjustments upon the expiration or completion date of the LOI.
Purchases made more than 90 days before signing an LOI will be applied toward
completion of the LOI based on the value of the shares purchased calculated at
the public offering price on the effective date of the LOI.
    
 
   
    To assure compliance with the provisions of the 1940 Act, out of the initial
purchase (or subsequent purchases if necessary) the Transfer Agent will escrow
in the form of shares an appropriate dollar amount (computed to the nearest full
share). All dividends and any capital gain distributions on the escrowed shares
will be credited to the purchaser. All shares purchased, including those
escrowed, will be registered in the purchaser's name. If the total investment
specified under this LOI is completed within the 13-month period, the escrowed
shares will be promptly released. If the intended investment is not completed,
the purchaser will pay the Transfer Agent the difference between the sales
charge on the specified amount and the amount actually purchased. If the
purchaser does not pay such difference within 20 days of the expiration date, he
    
 
                                      A-8
<PAGE>
                              AIM INVESTOR'S GUIDE
irrevocably constitutes and appoints the Transfer Agent as his attorney to
surrender for redemption any or all shares, to make up such difference within 60
days of the expiration date.
 
    If at any time before completing the LOI Program, the purchaser wishes to
cancel the agreement, he must give written notice to AIM Distributors. If at any
time before completing the LOI Program the purchaser requests the Transfer Agent
to liquidate or transfer beneficial ownership of his total shares, a
cancellation of the LOI will automatically be effected. If the total amount
purchased is less than the amount specified in the LOI, the Transfer Agent will
redeem an appropriate number of escrowed shares equal to the difference between
the sales charge actually paid and the sales charge that would have been paid if
the total purchases had been made at a single time.
 
   
    Any investor who purchased shares of the AIM/GT Funds pursuant to a LOI
entered into prior to June 1, 1998 may continue to make such purchases under the
terms of such LOI. See "How to Purchase and Redeem Shares" in the Statement of
Additional Information.
    
 
   
    (2) RIGHTS OF ACCUMULATION.  A "purchaser," as previously defined, may also
qualify for reduced initial sales charges based upon such purchaser's existing
investment in shares of any of the AIM Funds (except for (i) Class A shares of
AIM DOLLAR FUND, AIM TAX-EXEMPT CASH FUND and AIM Cash Reserve Shares of AIM
MONEY MARKET FUND and (ii) Class B and Class C shares of the Multiple Class
Funds) at the time of the proposed purchase. Rights of accumulation are also
available to holders of the Connecticut General Guaranteed Account, established
for tax-qualified group annuities, for contracts purchased on or before June 30,
1992. To determine whether or not a reduced initial sales charge applies to a
proposed purchase, AIM Distributors takes into account not only the money which
is invested upon such proposed purchase, but also the value of all shares of the
AIM Funds (except for (i) Class A shares of AIM DOLLAR FUND, AIM TAX-EXEMPT CASH
FUND and AIM Cash Reserve Shares of AIM MONEY MARKET FUND and (ii) Class B and
Class C shares of the Multiple Class Funds) owned by such purchaser, calculated
at their then current public offering price. If a purchaser so qualifies for a
reduced sales charge, the reduced sales charge applies to the total amount of
money then being invested by such purchaser and not just to the portion that
exceeds the breakpoint above which a reduced sales charge applies. For example,
if a purchaser already owns qualifying shares of any AIM Fund with a value of
$20,000 and wishes to invest an additional $20,000 in a fund with a maximum
initial sales charge of 5.50%, the reduced initial sales charge of 5.25% will
apply to the full $20,000 purchase and not just to the $15,000 in excess of the
$25,000 breakpoint. To qualify for obtaining the discount applicable to a
particular purchase, the purchaser or his dealer must furnish AFS with a list of
the account numbers and the names in which such accounts of the purchaser are
registered at the time the purchase is made.
    
 
   
    PURCHASES AT NET ASSET VALUE.  Purchases of shares of any of the AIM Funds
at net asset value (without payment of an initial sales charge) may be made in
connection with: (a) the reinvestment of dividends and other distributions from
a fund (see "Dividends, Distributions and Tax Matters"); (b) exchanges of shares
of certain other funds (see "Exchange Privilege"); (c) use of the reinstatement
privilege (see "How to Redeem Shares"); or (d) a merger, consolidation or
acquisition of assets of a fund.
    
 
    Shareholders of record of Class A shares of AIM WEINGARTEN FUND and AIM
CONSTELLATION FUND on September 8, 1986, and shareholders of record of Class A
shares of AIM CHARTER FUND on November 17, 1986, may purchase additional Class A
shares of the particular AIM Fund(s) whose shares they owned on such date, at
net asset value (without payment of a sales charge) for as long as they
continuously own Class A shares of such AIM Fund(s) having a market value of at
least $500. In addition, discretionary advised clients of any investment
advisors whose clients held Class A shares of AIM WEINGARTEN FUND or AIM
CONSTELLATION FUND on September 8, 1986, or who held Class A shares of AIM
CHARTER FUND on November 17, 1986, and have held such Class A shares at all
times subsequent to such date, may purchase Class A shares of the applicable AIM
Fund(s) at the net asset value of such shares.
 
    The following persons may purchase Class A shares of the AIM Funds through
AIM Distributors without payment of an initial sales charge: (a) A I M
Management Group Inc. ("AIM Management") and its affiliated companies; (b) any
current or retired officer, director, trustee or employee, or any member of the
immediate family (including spouse, children, parents and parents of spouse) of
any such person, of AIM Management or its affiliates or of certain mutual funds
which are advised or managed by AIM; or any trust established exclusively for
the benefit of such persons; (c) any employee benefit plan established for
employees of AIM Management or its affiliates; (d) any current or retired
officer, director, trustee or employee, or any member of
 
                                      A-9
<PAGE>
                              AIM INVESTOR'S GUIDE
   
the immediate family (including spouse, children, parents and parents of spouse)
of any such person, or of CIGNA Corporation or of any of its affiliated
companies, or of First Data Investor Services Group (formerly The Shareholder
Services Group, Inc.); (e) any investment company sponsored by CIGNA
Investments, Inc. or any of its affiliated companies for the benefit of its
directors' deferred compensation plans; (f) discretionary advised clients of AIM
or AIM Capital; (g) registered representatives and employees of dealers who have
entered into agreements with AIM Distributors (or financial institutions that
have arrangements with such dealers with respect to the sale of shares of the
AIM Funds) and any member of the immediate family (including spouse, children,
parents and parents of spouse) of any such person, provided that purchases at
net asset value are permitted by the policies of such person's employer; (h)
certain broker-dealers, investment advisers or bank trust departments that
provide asset allocation, similar specialized investment services or investment
company transaction services for their customers, that charge a minimum annual
fee for such services, and that have entered into an agreement with AIM
Distributors with respect to their use of the AIM Funds in connection with such
services; (i) any employee or any member of the immediate family (including
spouse, children, parents and parents of spouse) of any employee, of Triformis
Inc.; (j) shareholders of the AIM/GT Funds as of April 30, 1987 who since that
date continually have owned shares of one or more of the AIM/GT Funds; and (k)
certain former AMA Investment Advisers' shareholders who became shareholders of
the AIM Global Health Care Fund in October 1989, and who have continuously held
shares in the AIM/GT Funds since that time.
    
 
   
    In addition, shares of any AIM Fund may be purchased at net asset value,
without payment of a sales charge, by pension, profit-sharing or other employee
benefit plans created pursuant to a plan qualified under Section 401 of the Code
or plans under Section 457 of the Code, or employee benefit plans created
pursuant to Section 403(b) of the Code and sponsored by nonprofit organizations
defined under Section 501(c)(3) of the Code. Such plans will qualify for
purchases at net asset value provided that (1) the total amount invested in the
plan is at least $1,000,000, (2) the sponsor signs a $1,000,000 LOI, (3) such
shares are purchased by an employer-sponsored plan with at least 100 eligible
employees, or (4) all of the plan's transactions are executed through a single
financial institution or service organization who has entered into an agreement
with AIM Distributors with respect to their use of the AIM Funds in connection
with such accounts. Section 403(b) plans sponsored by public educational
institutions will not be eligible for net asset value purchases based on the
aggregate investment made by the plan or the number of eligible employees.
Participants in such plans will be eligible for reduced sales charges based
solely on the aggregate value of their individual investments in the applicable
AIM Fund. PLEASE NOTE THAT TAX-EXEMPT FUNDS ARE NOT APPROPRIATE INVESTMENTS FOR
SUCH PLANS. AIM Distributors may pay investment dealers or other financial
service firms for share purchases of the Load Funds (as defined under the
caption "Exchange Privilege") sold at net asset value to an employee benefit
plan in accordance with this paragraph as follows: 1% of the first $2 million of
such purchases, plus 0.80% of the next $1 million of such purchases, plus 0.50%
of the next $17 million of such purchases, plus 0.25% of amounts in excess of
$20 million of such purchases and up to 0.10% of the net asset value of any
Class A shares of AIM LIMITED MATURITY TREASURY FUND sold at net asset value to
an employee benefit plan in accordance with this paragraph.
    
 
    Class A shares of AIM WEINGARTEN FUND and AIM CONSTELLATION FUND may be
deposited at net asset value, without payment of a sales charge, in G/SET series
unit investment trusts, whose portfolios consist exclusively of Class A shares
of AIM WEINGARTEN FUND or AIM CONSTELLATION FUND and stripped United States
Treasury issued notes or bonds bearing no current interest ("Treasury
Obligations"). Class A shares of such funds may also be purchased at net asset
value by other unit investment trusts approved by the Board of Directors of AIM
Equity Funds, Inc. Unit holders of such trusts may elect to invest cash
distributions from such trusts in Class A shares of AIM WEINGARTEN FUND or AIM
CONSTELLATION FUND at net asset value, including: (a) distributions of any
dividend income or other income received by such trusts; (b) distributions of
any net capital gains received in respect of Class A shares of AIM WEINGARTEN
FUND or AIM CONSTELLATION FUND and proceeds of the sales of Class A shares of
AIM WEINGARTEN FUND or AIM CONSTELLATION FUND used to redeem units of such
trusts; and (c) proceeds from the maturity of the Treasury Obligations at the
termination dates of such trusts. Prior to the termination dates of such trusts,
a unit holder may invest the proceeds from the redemption or repurchase of his
units in Class A shares of AIM WEINGARTEN FUND or AIM CONSTELLATION FUND at net
asset value, provided: (a) that the investment in Class A shares of AIM
WEINGARTEN FUND or AIM CONSTELLATION FUND is effected within 30 days of such
redemption or repurchase; and (b) that the unit holder or his dealer provides
AIM Distributors with a letter which: (i) identifies the name, address and
telephone
 
                                      A-10
<PAGE>
                              AIM INVESTOR'S GUIDE
number of the dealer who sold to the unit holder the units to be redeemed or
repurchased; and (ii) states that the investment in Class A shares of AIM
WEINGARTEN FUND or AIM CONSTELLATION FUND is being funded exclusively by the
proceeds from the redemption or repurchase of units of such trusts.
 
    FOR ANY FUND NAMED ON THE COVER PAGE OF THIS PROSPECTUS, AIM DISTRIBUTORS
AND ITS AGENTS RESERVE THE RIGHT AT ANY TIME (1) TO WITHDRAW ALL OR ANY PART OF
THE OFFERING MADE BY THIS PROSPECTUS; (2) TO REJECT ANY PURCHASE OR EXCHANGE
ORDER OR TO CANCEL ANY PURCHASE DUE TO NONPAYMENT OF THE PURCHASE PRICE; (3) TO
INCREASE, WAIVE OR LOWER THE MINIMUM INVESTMENT REQUIREMENTS; OR (4) TO MODIFY
ANY OF THE TERMS OR CONDITIONS OF PURCHASE OF SHARES OF SUCH FUND. For any fund
named on the cover page, AIM Distributors and its agents will use their best
efforts to provide notice of any such actions through correspondence with
broker-dealers and existing shareholders, supplements to the AIM Funds'
prospectuses, or other appropriate means, and will provide sixty (60) days'
notice in the case of termination or material modification to the exchange
privilege discussed under the caption "Exchange Privilege."
- --------------------------------------------------------------------------------
 
SPECIAL PLANS
 
    Except as noted below, each AIM Fund provides the special plans described
below for the convenience of its shareholders. Once established, there is no
obligation to continue to invest through a plan, and a shareholder may terminate
a plan at any time.
 
    Special plan applications and further information, including details of any
fees which are charged to a shareholder investing through a plan, may be
obtained by written request, directed to AFS at the address provided under "How
to Purchase Shares," or by calling the Client Services Department of AFS at
(800) 959-4246. IT IS RECOMMENDED THAT A SHAREHOLDER CONSIDERING ANY OF THE
PLANS DESCRIBED HEREIN CONSULT A TAX ADVISOR BEFORE COMMENCING PARTICIPATION IN
SUCH A PLAN.
 
    SYSTEMATIC WITHDRAWAL PLAN.  Under a Systematic Withdrawal Plan, a
shareholder who owns shares which are not subject to a contingent deferred sales
charge, can arrange for monthly, quarterly or annual amounts (but not less than
$50) to be drawn against the balance of his account in the designated AIM Fund.
Shareholders who own shares subject to a contingent deferred sales charge, can
only arrange for monthly or quarterly withdrawals under a Systematic Withdrawal
Plan. Payment of this amount can be made on any day of the month the shareholder
specifies, except the thirtieth or thirty-first day of each month in which a
payment is to be made. A minimum account balance of $5,000 is required to
establish a Systematic Withdrawal Plan, but there is no requirement thereafter
to maintain any minimum investment. With respect to shares subject to a
contingent deferred sales charge (all classes) no contingent deferred sales
charge will be imposed on withdrawals made under a Systematic Withdrawal Plan,
provided that the amounts withdrawn under such a plan do not exceed on an annual
basis 12% of the account value at the time the shareholder elects to participate
in the Systematic Withdrawal Plan. Systematic Withdrawal Plans with respect to
shares subject to a contingent deferred sales charge that exceed on an annual
basis 12% of such account will be subject to a contingent deferred sales charge
on the amounts exceeding 12% of the account value at the time the shareholder
elects to participate in the Systematic Withdrawal Plan.
 
    Under a Systematic Withdrawal Plan, all shares are to be held by the
Transfer Agent and all dividends and distributions are reinvested to shares of
the applicable AIM Fund by the Transfer Agent. To provide funds for payments
made under the Systematic Withdrawal Plan, the Transfer Agent redeems sufficient
full and fractional shares at their net asset value in effect at the time of
each such redemption.
 
   
    Payments under a Systematic Withdrawal Plan constitute taxable events. Since
such payments are funded by the redemption of shares, they may result in a
return of capital and in capital gains or losses, rather than in ordinary
income. Because sales charges are imposed on additional purchases of shares
(other than Class B or Class C shares of the Multiple Class Funds, and AIM Cash
Reserve Shares of AIM MONEY MARKET FUND), it is disadvantageous to effect such
purchases while a Systematic Withdrawal Plan is in effect.
    
 
    The Systematic Withdrawal Plan may be terminated at any time upon 10 days'
prior notice to AFS. Each AIM Fund bears its share of the cost of operating the
Systematic Withdrawal Plan. Each AIM Fund reserves the right to initiate a fee
for each withdrawal (not to exceed its cost), but there is no present intent to
do so.
 
    AUTOMATIC INVESTMENT PLAN.  Shareholders who wish to make regular systematic
investments may establish an Automatic Investment Plan. Under this plan
withdrawal is made on the shareholder's bank account in
 
                                      A-11
<PAGE>
                              AIM INVESTOR'S GUIDE
the amount specified by the shareholder (minimum $50 per investment, per
account) and on a day or date(s) specified by the shareholder. The proceeds are
invested in shares of the designated AIM Fund at the applicable offering price
determined on the date of the withdrawal. An Automatic Investment Plan may be
discontinued upon 10 days' prior notice to the Transfer Agent or AIM
Distributors.
 
   
    AUTOMATIC DIVIDEND INVESTMENT PLAN.  Shareholders may elect to have all
dividends and distributions declared by an AIM Fund paid in cash or invested at
net asset value, without payment of an initial sales charge, either in shares of
the same AIM Fund or invested in shares of another AIM Fund. For each of the
Multiple Class Funds, dividends and distributions attributable to Class A shares
may be reinvested in Class A shares of the same fund, in Class A shares of
another Multiple Class Fund or in shares of another AIM Fund which is not a
Multiple Class Fund; dividends and distributions attributable to Class B shares
may be reinvested in Class B shares of the same fund or in Class B shares of
another Multiple Class Fund; dividends and distributions attributable to Class C
shares may be reinvested in Class C shares of the same fund or in Class C shares
of another Multiple Class Fund; and dividends and distributions attributable to
AIM Cash Reserve Shares of AIM MONEY MARKET FUND may be reinvested in additional
shares of such fund, in Class A shares of another Multiple Class Fund or in
shares of another AIM Fund which is not a Multiple Class Fund. See "Dividends,
Distributions and Tax Matters -- Dividends and Distributions" for a description
of payment dates for these options. In order to qualify to have dividends and
distributions of one AIM Fund invested in shares of another AIM Fund, the
following conditions must be satisfied: (a) the shareholder must have an account
balance in the dividend paying fund of at least $5,000; (b) the account must be
held in the name of the shareholder (i.e., the account may not be held in
nominee name); and (c) the shareholder must have requested and completed an
authorization relating to the reinvestment of dividends into another AIM Fund.
An authorization may be given on the account application or on an authorization
form available from AIM Distributors. An AIM Fund will waive the $5,000 minimum
account value requirement if the shareholder has an account in the fund selected
to receive the dividends and distributions with a value of at least $500.
    
 
    DOLLAR COST AVERAGING.  Shareholders may elect to have a specified amount
automatically exchanged, either monthly or quarterly (on or about the 10th or
25th day of the applicable month), from one of their accounts into one or more
AIM Funds, subject to the terms and conditions described under the caption
"Exchange Privilege -- Terms and Conditions of Exchanges." The account from
which exchanges are to be made must have a value of at least $5,000 when a
shareholder elects to begin this program, and the exchange minimum is $50 per
transaction. All of the accounts that are part of this program must have
identical registrations. The net asset value of shares purchased under this
program may vary, and may be more or less advantageous than if shares were not
exchanged automatically. There is no charge for entering the Dollar Cost
Averaging program. Sale charges may apply, as described under the caption
"Exchange Privilege."
 
   
    PROTOTYPE RETIREMENT PLANS.  The AIM Funds (except for AIM HIGH INCOME
MUNICIPAL FUND, AIM MUNICIPAL BOND FUND, AIM TAX-FREE INTERMEDIATE FUND, AIM
TAX-EXEMPT CASH FUND and AIM TAX-EXEMPT BOND FUND OF CONNECTICUT) have made the
following prototype retirement plans available to corporations, individuals and
employees of non-profit organizations and public schools: combination money-
purchase/profit-sharing plans; 403(b) plans; IRA plans; Roth IRA plans; SARSEP
plans; SEP plans; and SIMPLE IRA plans (collectively, "retirement accounts").
Information concerning these plans, including the custodian's fees and the forms
necessary to adopt such plans, can be obtained by calling or writing the AIM
Funds or AIM Distributors. Shares of the AIM Funds are also available for
investment through existing 401(k) plans (for both individuals and employers)
adopted under the Code. The plan custodian currently imposes an annual $10
maintenance fee with respect to each retirement account for which it serves as
the custodian. This fee is generally charged in December. Each AIM Fund and/or
the custodian reserve the right to change this maintenance fee and to initiate
an establishment fee (not to exceed its cost).
    
 
   
    PORTFOLIO REBALANCING PROGRAM.  The Portfolio Rebalancing Program
("Program") permits eligible shareholders to establish and maintain an
allocation across a range of AIM Funds. The Program automatically rebalances
holdings of AIM Funds to the established allocation on a periodic basis. Under
the Program, a shareholder may predesignate, on a percentage basis, how the
total value of his or her holdings in a minimum of two, and a maximum of ten,
AIM Funds ("Personal Portfolio") is to be rebalanced on a quarterly, semiannual,
or annual basis.
    
 
   
    Rebalancing under the Program will be effected through the exchange of
shares of one or more AIM Funds in the shareholder's Personal Portfolio for
shares of the same class(es) of one or more other AIM Funds in the
    
 
                                      A-12
<PAGE>
                              AIM INVESTOR'S GUIDE
   
shareholder's Personal Portfolio. See "Exchange Privilege." If shares of the AIM
Fund(s) in a shareholder's Personal Portfolio have appreciated during a
rebalancing period, the Program will result in shares of AIM Fund(s) that have
appreciated most during the period being exchanged for shares of AIM Fund(s)
that have appreciated least. SUCH EXCHANGES ARE NOT TAX-FREE AND MAY RESULT IN A
SHAREHOLDER'S REALIZING A GAIN OR LOSS, AS THE CASE MAY BE, FOR FEDERAL INCOME
TAX PURPOSES. See "Dividends, Distributions and Tax Matters -- Dividends and
Distributions." Participation in the Program does not assure that a shareholder
will profit from purchases under the Program nor does it prevent or lessen
losses in a declining market.
    
 
   
    The Program will automatically rebalance the shareholder's Personal
Portfolio on the 28th day of the last month of the period chosen (or the
immediately preceding business day if the 28th is not a business day), subject
to any limitations below. The Program will not execute an exchange if the
variance in a shareholder's Personal Portfolio for a particular AIM Fund would
be 2% or less. In predesignating percentages, shareholders must use whole
percentages and totals must equal 100%. Shareholders participating in the
Program may not request issuance of physical certificates representing an AIM
Fund's shares. The AIM Funds and AIM Distributors reserve the right to modify,
suspend, or terminate the Program at any time on 60 days' prior written notice
to shareholders. A request to participate in the Program must be received in
good order at least five business days prior to the next rebalancing date. Once
a shareholder establishes the Program for his or her Personal Portfolio, a
shareholder cannot cancel or change which rebalancing frequency, which AIM Funds
or what allocation percentages are assigned to the Program, unless canceled or
changed in writing and received by the Transfer Agent in good order at least
five business days prior to the rebalancing date. Shareholders participating in
the Program may also participate in the Right of Accumulation, LOI, and
Automatic Investment Plan. Certain dealers/financial institutions may charge a
fee for establishing accounts relating to the Program. Investors should contact
their dealers/financial institutions or AIM Distributors for more information.
    
 
                                      A-13
<PAGE>
                              AIM INVESTOR'S GUIDE
 
EXCHANGE PRIVILEGE
 
   
    TERMS AND CONDITIONS OF EXCHANGES.  Shareholders of the AIM Funds may
participate in an exchange privilege as described below. The exchange privilege
is also available to holders of the Connecticut General Guaranteed Account,
established for tax-qualified group annuities, for contracts purchased on or
before June 30, 1992. AIM Distributors acts as distributor for the AIM Funds
which represent a range of different investment objectives and policies. As set
forth under the caption "Terms and Conditions of Purchase of the AIM Funds --
Sales Charges and Dealer Concessions," shares of certain of the AIM Funds,
including the Class A shares of the Multiple Class Funds, listed below and
referred to herein as the "Load Funds," are sold at a public offering price that
includes a maximum sales charge of 5.50% or 4.75% of the public offering price
of such shares; Class A shares (or shares which normally involve the payment of
initial sales charges) of certain of the AIM Funds, listed below and referred to
herein as the "Lower Load Funds," are sold at a public offering price that
includes a maximum sales charge of 1.00% of the public offering price of such
shares; and Class A shares or shares of certain other funds, listed below and
referred to herein as the "No Load Funds," are sold at net asset value, without
payment of a sales charge.
    
 
   
                                  LOAD FUNDS:
- --------------------------------------------------------------------------------
AIM ADVISOR FLEX FUND -- CLASS A
AIM ADVISOR INTERNATIONAL VALUE FUND -- CLASS A
AIM ADVISOR LARGE CAP VALUE FUND -- CLASS A
AIM ADVISOR MULTIFLEX FUND -- CLASS A
AIM ADVISOR REAL ESTATE FUND -- CLASS A
AIM AGGRESSIVE GROWTH FUND -- CLASS A
AIM AMERICA VALUE FUND -- CLASS A
AIM ASIAN GROWTH FUND -- CLASS A
AIM BALANCED FUND -- CLASS A
AIM BLUE CHIP FUND -- CLASS A
AIM CAPITAL DEVELOPMENT FUND -- CLASS A
AIM CHARTER FUND -- CLASS A
AIM CONSTELLATION FUND -- CLASS A
AIM DEVELOPING MARKETS FUND -- CLASS A
AIM EMERGING MARKETS FUND -- CLASS A
AIM EUROPE GROWTH FUND -- CLASS A
AIM EUROPEAN DEVELOPMENT FUND -- CLASS A
AIM GLOBAL AGGRESSIVE GROWTH FUND -- CLASS A
AIM GLOBAL CONSUMER PRODUCTS AND SERVICES FUND -- CLASS A
AIM GLOBAL FINANCIAL SERVICES FUND -- CLASS A
AIM GLOBAL GOVERNMENT INCOME FUND -- CLASS A
AIM GLOBAL GROWTH FUND -- CLASS A
AIM GLOBAL GROWTH & INCOME FUND -- CLASS A
AIM GLOBAL HEALTH CARE FUND -- CLASS A
AIM GLOBAL HIGH INCOME FUND -- CLASS A
 
AIM GLOBAL INCOME FUND -- CLASS A
AIM GLOBAL INFRASTRUCTURE FUND -- CLASS A
AIM GLOBAL RESOURCES FUND -- CLASS A
AIM GLOBAL TELECOMMUNICATIONS FUND -- CLASS A
AIM GLOBAL TRENDS FUND -- CLASS A
AIM GLOBAL UTILITIES FUND -- CLASS A
AIM HIGH INCOME MUNICIPAL FUND -- CLASS A
AIM HIGH YIELD FUND -- CLASS A
AIM INCOME FUND -- CLASS A
AIM INTERMEDIATE GOVERNMENT FUND -- CLASS A
AIM INTERNATIONAL EQUITY FUND -- CLASS A
AIM INTERNATIONAL GROWTH FUND -- CLASS A
AIM JAPAN GROWTH FUND -- CLASS A
AIM LATIN AMERICAN GROWTH FUND -- CLASS A
AIM MID CAP GROWTH FUND -- CLASS A
AIM MONEY MARKET FUND -- CLASS A
AIM MUNICIPAL BOND FUND -- CLASS A
AIM NEW PACIFIC GROWTH FUND -- CLASS A
AIM SELECT GROWTH FUND -- CLASS A
AIM SMALL CAP EQUITY FUND -- CLASS A
AIM SMALL CAP OPPORTUNITIES FUND -- CLASS A
AIM STRATEGIC INCOME FUND -- CLASS A
AIM TAX-EXEMPT BOND FUND OF CONNECTICUT -- CLASS A
AIM VALUE FUND -- CLASS A
AIM WEINGARTEN FUND -- CLASS A
AIM WORLDWIDE GROWTH FUND -- CLASS A
 
LOWER LOAD FUNDS:
- --------------------------------------------------------------------------------
AIM LIMITED MATURITY TREASURY FUND -- CLASS A
AIM TAX-FREE INTERMEDIATE FUND -- CLASS A
 
NO LOAD FUNDS:
- --------------------------------------------------------------------------------
AIM MONEY MARKET FUND -- AIM CASH RESERVE SHARES
AIM TAX-EXEMPT CASH FUND -- CLASS A
AIM DOLLAR FUND -- CLASS A
 
    Shares of any AIM Fund may be exchanged for shares of any other AIM Fund on
the terms described on the chart below, except that (i) Load Fund share
purchases of $1,000,000 or more which are subject to a contingent deferred sales
charge may not be exchanged for Lower Load Funds or for AIM TAX-EXEMPT CASH FUND
(AND CLASS A SHARES OF AIM DOLLAR FUND); (II) LOWER LOAD FUND SHARE PURCHASES OF
$1,000,000 OR MORE AND AIM CASH RESERVE SHARES OF AIM MONEY MARKET FUND, AIM
TAX-EXEMPT CASH FUND AND AIM DOLLAR FUND PURCHASES MAY BE EXCHANGED FOR LOAD
FUND SHARES IN AMOUNTS OF $1,000,000 OR MORE WHICH WILL THEN BE SUBJECT TO A
CONTINGENT DEFERRED SALES CHARGE; HOWEVER, FOR PURPOSES OF CALCULATING THE
CONTINGENT DEFERRED SALES CHARGES ON THE LOAD FUND SHARES ACQUIRED, THE 18-MONTH
PERIOD SHALL BE COMPUTED FROM THE DATE OF SUCH EXCHANGE, (iii) Class A shares
may be exchanged for Class A shares, (iv) Class B shares may be exchanged only
for Class B shares; (v) Class C shares may only be exchanged for Class C shares;
and (vi) AIM Cash Reserve Shares of AIM MONEY MARKET FUND may not be exchanged
for Class A shares of AIM MONEY MARKET FUND or for Class B or Class C shares.
    
 
                                      A-14
<PAGE>
                              AIM INVESTOR'S GUIDE
 
    DEPENDING UPON THE FUND FROM WHICH AND INTO WHICH AN EXCHANGE IS BEING MADE,
SHARES BEING ACQUIRED IN AN EXCHANGE MAY BE ACQUIRED AT THEIR OFFERING PRICE OR
AT THEIR NET ASSET VALUE (WITHOUT PAYMENT OF A SALES CHARGE) AS SET FORTH IN THE
TABLE BELOW FOR SHARES INITIALLY PURCHASED PRIOR TO MAY 1, 1994:
 
   
<TABLE>
<CAPTION>
                                                                                                        MULTIPLE CLASS FUNDS:
                                                                   LOWER LOAD         NO LOAD      --------------------------------
FROM:                         TO:            LOAD FUNDS               FUNDS            FUNDS           CLASS B          CLASS C
- ---------------------------------------------------------------  ---------------  ---------------  ---------------  ---------------
 
<S>                    <C>                                       <C>              <C>              <C>              <C>
Load Funds............. Net Asset Value                          Net Asset Value  Net Asset Value  Not Applicable   Not Applicable
 
Lower Load Funds....... Net Asset Value                          Net Asset Value  Net Asset Value  Not Applicable   Not Applicable
 
No Load Funds.......... Offering Price if No Load shares were    Net Asset Value  Net Asset Value  Not Applicable   Not Applicable
                       directly purchased. Net Asset Value if    if No Load
                       No Load shares were acquired upon         shares were
                       exchange of shares of any Load Fund or    acquired upon
                       any Lower Load Fund.                      exchange of
                                                                 shares of any
                                                                 Load Fund or
                                                                 any Lower Load
                                                                 Fund;
                                                                 otherwise,
                                                                 Offering Price.
 
Multiple Class Funds:
 
  Class B.............. Not Applicable                           Not Applicable   Not Applicable   Net Asset Value  Not Applicable
</TABLE>
    
 
    FOR SHARES INITIALLY PURCHASED ON OR AFTER MAY 1, 1994, THE FOREGOING TABLE
IS REVISED AS FOLLOWS:
 
<TABLE>
<CAPTION>
                                                                                                        MULTIPLE CLASS FUNDS:
                                                                   LOWER LOAD         NO LOAD      --------------------------------
FROM:                         TO:            LOAD FUNDS               FUNDS            FUNDS           CLASS B          CLASS C
- ---------------------------------------------------------------  ---------------  ---------------  ---------------  ---------------
 
<S>                    <C>                                       <C>              <C>              <C>              <C>
Load Funds............. Net Asset Value                          Net Asset Value  Net Asset Value  Not Applicable   Not Applicable
 
Lower Load Funds....... Net Asset Value if shares were acquired  Net Asset Value  Net Asset Value  Not Applicable   Not Applicable
                       upon exchange of any Load Fund.
                       Otherwise, difference in sales charge
                       will apply.
 
No Load Funds.......... Offering Price if No Load shares were    Net Asset Value  Net Asset Value  Not Applicable   Not Applicable
                       directly purchased. Net Asset Value if    if No Load
                       No Load shares were acquired upon         shares were
                       exchange of shares of any Load Fund.      acquired upon
                       Difference in sales charge will apply if  exchange of
                       No Load shares were acquired upon         shares of any
                       exchange of Lower Load Fund shares.       Load Fund or
                                                                 any Lower Load
                                                                 Fund;
                                                                 otherwise,
                                                                 Offering Price.
 
Multiple Class Funds:
 
  Class B.............. Not Applicable                           Not Applicable   Not Applicable   Net Asset Value  Not Applicable
 
  Class C.............. Not Applicable                           Not Applicable   Not Applicable   Not Applicable   Net Asset Value
</TABLE>
 
   
    An exchange is permitted only in the following circumstances: (a) if the
funds offer more than one class of shares, the exchange must be between the same
class of shares (e.g., Class A, Class B and Class C shares of a Multiple Class
Fund cannot be exchanged for each other) except that AIM Cash Reserve Shares of
AIM MONEY MARKET FUND may be exchanged for Class A shares of another Multiple
Class Fund; (b) the dollar amount of the exchange must be at least equal to the
minimum investment applicable to the shares of the fund acquired through such
exchange; (c) the shares of the fund acquired through exchange must be qualified
for sale in the state in which the shareholder resides; (d) the exchange must be
made between accounts having identical registrations and addresses; (e) the full
amount of the purchase price for the shares being exchanged must have already
been received by the fund; (f) the account from which shares have been exchanged
must be coded as having a certified taxpayer identification number on file or,
in the alternative, an appropriate IRS Form W-8 (certificate of foreign status)
or Form W-9 (certifying exempt status) must have been received by the fund; (g)
newly acquired shares (through either an initial or subsequent investment) are
held in an account for at least ten business days, and all other shares are held
in an account for at least one day, prior to the exchange; and (h) certificates
representing shares must be returned before shares can be exchanged. There is no
fee for exchanges among the AIM Funds.
    
 
    THE CURRENT PROSPECTUS OF EACH OF THE AIM FUNDS AND CURRENT INFORMATION
CONCERNING THE OPERATION OF THE EXCHANGE PRIVILEGE ARE AVAILABLE THROUGH AIM
DISTRIBUTORS OR THROUGH ANY DEALER WHO HAS EXECUTED AN APPLICABLE AGREEMENT WITH
AIM DISTRIBUTORS. BEFORE EXCHANGING SHARES, INVESTORS SHOULD REVIEW THE
 
                                      A-15
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                              AIM INVESTOR'S GUIDE
PROSPECTUSES OF THE FUNDS WHOSE SHARES WILL BE ACQUIRED THROUGH EXCHANGE.
EXCHANGES OF SHARES ARE CONSIDERED TO BE SALES FOR FEDERAL AND STATE INCOME TAX
PURPOSES AND MAY RESULT IN A TAXABLE GAIN OR LOSS TO A SHAREHOLDER.
 
    THE EXCHANGE PRIVILEGE IS NOT AN OPTION OR RIGHT TO PURCHASE SHARES BUT IS
PERMITTED UNDER THE RESPECTIVE POLICIES OF THE PARTICIPATING FUNDS, AND MAY BE
MODIFIED OR DISCONTINUED BY ANY OF SUCH FUNDS OR BY AIM DISTRIBUTORS AT ANY
TIME, AND TO THE EXTENT PERMITTED BY APPLICABLE LAW, WITHOUT NOTICE.
 
   
    Shares of any AIM Fund (other than AIM MONEY MARKET FUND) to be exchanged
are redeemed at their net asset value as determined at NYSE Close on the day
that an exchange request in proper form (described below) is received. Exchange
requests received after NYSE Close will result in the redemption of shares at
their net asset value at NYSE Close on the next business day. See "Terms and
Conditions of Purchase of the AIM Funds -- Timing of Purchase, Exchange and
Redemption Orders (AIM MONEY MARKET FUND only)" for information regarding the
timing of exchange orders for AIM MONEY MARKET FUND. Normally, shares of an AIM
Fund to be acquired by exchange are purchased at their net asset value or
applicable offering price, as the case may be, determined on the date that such
request is received, but under unusual market conditions such purchases may be
delayed for up to five business days if it is determined that a fund would be
materially disadvantaged by an immediate transfer of the proceeds of the
exchange. If a shareholder is exchanging into a fund paying daily dividends
("Dividends, Distributions and Tax Matters -- Dividends and Distributions,"
below), and the release of the exchange proceeds is delayed for the foregoing
five-day period, such shareholder will not begin to accrue dividends until the
sixth business day after the exchange. Shares purchased by check may not be
exchanged until it is determined that the check has cleared, which may take up
to ten business days from the date that the check is received. See "Terms and
Conditions of Purchase of the AIM Funds -- Timing of Purchase Orders."
    
 
    In the event of unusual market conditions, AIM Distributors reserves the
right to reject any exchange request, if, in the judgment of AIM Distributors,
the number of requests or the total value of the shares that are the subject of
the exchange places a material burden on a fund. For example, the number of
exchanges by investment managers making market timing exchanges may be limited.
 
    EXCHANGES BY MAIL.  Investors exchanging their shares by mail should send a
written request to AFS. The request should contain the account registration and
account number, the dollar amount or number of shares to be exchanged, and the
names of the funds from which and into which the exchange is to be made. The
request should comply with all of the requirements for redemption by mail,
except those required for redemption of IRAs. See "How to Redeem Shares."
 
   
    EXCHANGES BY TELEPHONE.  Shareholders or their agents may request an
exchange by telephone. If a shareholder does not wish to allow telephone
exchanges by any person in his account, he should decline that option on the
account application. AIM Distributors has made arrangements with certain dealers
and investment advisory firms to accept telephone instructions to exchange
shares between any of the AIM Funds. AIM Distributors reserves the right to
impose conditions on dealers or investment advisors who make telephone exchanges
of shares of the funds, including the condition that any such dealer or
investment advisor enter into an agreement (which contains additional conditions
with respect to exchanges of shares) with AIM Distributors. To exchange shares
by telephone, a shareholder, dealer or investment advisor who has satisfied the
foregoing conditions must call AFS at (800) 959-4246. If a shareholder is unable
to reach AFS by telephone, he may also request exchanges by telegraph or use
overnight courier services to expedite exchanges by mail, which will be
effective on the business day received by the Transfer Agent as long as such
request is received prior to NYSE Close. The Transfer Agent and AIM Distributors
will not be liable for any loss, expense or cost arising out of any telephone
exchange request that they reasonably believe 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 may include recordings of telephone
transactions (maintained for six months), requests for confirmation of the
shareholder's Social Security Number and current address, and mailings of
confirmations promptly after the transaction.
    
 
    EXCHANGES OF CLASS B AND CLASS C SHARES.  A contingent deferred sales charge
will not be imposed in connection with exchanges among Class B or Class C
shares. For purposes of determining a shareholder's holding period of Class B or
Class C shares in the calculation of the applicable contingent deferred sales
 
                                      A-16
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                              AIM INVESTOR'S GUIDE
   
charge, the period of time during which Class B or Class C shares were held
prior to an exchange will be added to the holding period of the applicable Class
B or Class C shares acquired in an exchange.
    
 
HOW TO REDEEM SHARES
 
   
    Shares of the AIM Funds may be redeemed directly through AIM Distributors or
through any dealer/ financial institution who has entered into an agreement with
AIM Distributors. In addition to the obligation of the fund(s) named on the
cover page to redeem shares, AIM Distributors also repurchases shares. Although
a contingent deferred sales charge may be applicable to certain redemptions as
described below, there is no redemption fee imposed when shares are redeemed or
repurchased; however, dealers may charge service fees for handling repurchase
transactions.
    
 
   
    MULTIPLE DISTRIBUTION SYSTEM.  CLASS B SHARES. Class B shares purchased
under the Multiple Distribution System may be redeemed on any business day of a
Multiple Class Fund at the net asset value per share next determined following
receipt of the redemption order, as described under the caption "Timing and
Pricing of Redemption Orders," less the applicable contingent deferred sales
charge shown in the table below. No deferred sales charge will be imposed (i) on
redemptions of Class B shares following six years from the date such shares were
purchased, (ii) on Class B shares acquired through reinvestments of dividends
and distributions attributable to Class B shares or (iii) on amounts that
represent capital appreciation in the shareholder's account above the purchase
price of the Class B shares.
    
 
<TABLE>
<CAPTION>
                                                                                             CONTINGENT DEFERRED SALES
                                                                                               CHARGE AS % OF DOLLAR
YEARS SINCE PURCHASE MADE                                                                    AMOUNT SUBJECT TO CHARGE
- ------------------------------------------------------------------------------------------  ---------------------------
<S>                                                                                         <C>
First.....................................................................................              5%
Second....................................................................................              4%
Third.....................................................................................              3%
Fourth....................................................................................              3%
Fifth.....................................................................................              2%
Sixth.....................................................................................              1%
Seventh and Following.....................................................................             None
</TABLE>
 
    In determining whether a contingent deferred sales charge is applicable, it
will be assumed that a redemption is made first, of any shares held in the
shareholder's account that are not subject to such charge; second, of shares
derived from reinvestment of dividends and other distributions; third, of shares
held for more than six years from the date such shares were purchased; and
fourth, of shares held less than six years from the date such shares were
purchased. The applicable sales charge will be applied against the lesser of the
current market value of shares redeemed or their original cost.
 
   
    Class B shares that are acquired during a tender offer by AIM Floating Rate
Fund ("Floating Rate Fund") pursuant to an exchange will be subject, in lieu of
the contingent deferred sales charge described above, to a contingent deferred
sales charge equivalent to the early withdrawal charge on the shares of the
Floating Rate Fund. For purposes of computing such early withdrawal charge, the
holding period of Class B shares being redeemed will include the holding period
of the Floating Rate Fund shares prior to exchange.
    
 
   
    CLASS C SHARES. Class C shares purchased under the Multiple Distribution
System may be redeemed on any business day of a Multiple Class Fund at the net
asset value per share next determined following receipt of the redemption order,
as described under the caption "Timing and Pricing of Redemption Orders," less a
1% contingent deferred sales charge. No deferred sales charge will be imposed
(i) on redemptions of Class C shares following one year from the date such
shares were purchased; (ii) on Class C shares acquired through reinvestment of
dividends and distributions attributable to Class C shares; (iii) on amounts
that represent capital appreciation in the shareholder's account above the
purchase price of the Class C shares; (iv) on redemptions of additional
purchases of shares of AIM ADVISOR FLEX FUND, AIM ADVISOR INTERNATIONAL VALUE
FUND, AIM ADVISOR LARGE CAP VALUE FUND, AIM ADVISOR MULTIFLEX FUND, and AIM
ADVISOR REAL ESTATE FUND, by shareholders of record on April 30, 1995 of these
funds (shareholders whose broker/dealers maintain a single omnibus account with
the Transfer Agent on behalf of those shareholders, perform sub-accounting
functions with respect to those shareholders, and are unable to segregate
shareholders of record prior to April 30, 1995 from shareholders whose accounts
were opened after that date will be subject to a CDSC on all purchases made
after March 1, 1996).
    
 
                                      A-17
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                              AIM INVESTOR'S GUIDE
 
    WAIVERS. Contingent deferred sales charges on Class B and Class C shares
will be waived on redemptions (1) following the death or post-purchase
disability, as defined in Section 72(m)(7) of the Code, of a shareholder or a
settlor of a living trust (provided AIM Distributors is notified of such death
or post-purchase disability at the time of the redemption request and is
provided with satisfactory evidence of such death or post-purchase disability),
(2) in connection with certain distributions from IRAs, custodial accounts
maintained pursuant to Code Section 403(b), deferred compensation plans
qualified under Code Section 457 and plans qualified under Code Section 401
(collectively, "Retirement Plans"), (3) pursuant to a Systematic Withdrawal
Plan, provided that amounts withdrawn under such plan do not exceed on an annual
basis 12% of the value of the shareholder's investment in Class B or Class C
shares at the time the shareholder elects to participate in the Systematic
Withdrawal Plan, (4) effected pursuant to the right of a Multiple Class Fund to
liquidate a shareholder's account if the aggregate net asset value of shares
held in the account is less than the designated minimum account size described
in the prospectus of such Multiple Class Fund, (5) effected by AIM of its
investment in Class B or Class C shares and (6) of Class C shares where such
investor's dealer of record, due to the nature of the investor's account,
notifies AIM Distributors prior to the time of investment that the dealer waives
the payment otherwise payable to the dealer described in the last paragraph
under the caption "Terms and Conditions of Purchase of the AIM Funds -- All
Groups of AIM Funds."
 
    Waiver category (1) above applies only to redemptions of Class B or Class C
shares held at the time of death or initial determination of post-purchase
disability.
 
    Waiver category (2) above applies only to redemptions resulting from:
 
(i)  required minimum distributions to plan participants or beneficiaries who
    are age 70 1/2 or older, and only with respect to that portion of such
    distributions which does not exceed 12% annually of the participant's or
    beneficiary's account value in a particular AIM Fund;
 
(ii) in-kind transfers of assets where the participant or beneficiary notifies
    AIM Distributors of such transfer no later than the time such transfer
    occurs;
 
(iii) tax-free rollovers or transfers of assets to another Retirement Plan
    invested in Class B or Class C shares of one or more Multiple Class Funds;
 
(iv) tax-free returns of excess contributions or returns of excess deferral
    amounts; and
 
(v) distributions upon the death or disability (as defined in the Code) of the
    participant or beneficiary.
 
   
    Shareholders who purchased Class B shares of the AIM/GT Funds or Class C
shares of AIM GLOBAL TRENDS FUND prior to June 1, 1998 are entitled to certain
additional waivers of the contingent deferred sales charge on those shares as
described in the Statement of Additional Information of each respective fund
under "How to Purchase and Redeem Shares."
    
 
   
    CONTINGENT DEFERRED SALES CHARGE PROGRAM FOR LARGE PURCHASES.  Except for
purchases of Class B and Class C shares of a Multiple Class Fund and purchases
of shares of the No Load Funds and Lower Load Funds, A CONTINGENT DEFERRED SALES
CHARGE OF 1% APPLIES TO PURCHASES OF $1,000,000 OR MORE THAT ARE REDEEMED WITHIN
18 MONTHS OF THE DATE OF PURCHASE. For a description of the AIM Funds
participating in the program, see "Terms and Conditions of Purchase of the AIM
Funds -- Sales Charges and Dealer Concessions." This charge will be 1% of the
lesser of the value of the shares redeemed (excluding reinvested dividends and
capital gains distributions) or the total original cost of such shares. In
determining whether a contingent deferred sales charge is payable, and the
amount of any such charge, shares not subject to the contingent deferred sales
charge are redeemed first (including shares purchased by reinvested dividends
and capital gains distributions and amounts representing increases from capital
appreciation), and then other shares are redeemed in the order of purchase. No
such charge will be imposed upon exchanges unless the shares acquired by
exchange are redeemed within 18 months of the date the shares were originally
purchased. For purposes of computing this 18-MONTH PERIOD, (i) shares of any
Load Fund or AIM Cash Reserve shares of AIM MONEY MARKET FUND [or Class A shares
of AIM DOLLAR FUND] which were acquired through an exchange of shares which
previously were subject to the 1% contingent deferred sales charge will be
credited with the period of time such exchanged shares were held, and (ii)
shares of any Load Fund which are subject to the 1% contingent deferred sales
charge and which were acquired through an exchange of shares of a Lower Load or
a No Load Fund which previously were not subject to the 1% contingent deferred
sales charge will not be credited with the period of time such exchanged shares
were held. The charge will be waived in the following circumstances: (l)
redemptions of shares by employee benefit plans ("Plans") qualified under
Sections 401 or 457 of the Code,
    
 
                                      A-18
<PAGE>
                              AIM INVESTOR'S GUIDE
or Plans created under Section 403(b) of the Code and sponsored by nonprofit
organizations as defined under Section 501(c)(3) of the Code, where shares are
being redeemed in connection with employee terminations or withdrawals, and (a)
the total amount invested in a Plan is at least $1,000,000, (b) the sponsor of a
Plan signs a letter of intent to invest at least $1,000,000 in one or more of
the AIM Funds, or (c) the shares being redeemed were purchased by an
employer-sponsored Plan with at least 100 eligible employees; provided, however,
that Plans created under Section 403(b) of the Code which are sponsored by
public educational institutions shall qualify under (a), (b) or (c) above on the
basis of the value of each Plan participant's aggregate investment in the AIM
Funds, and not on the aggregate investment made by the Plan or on the number of
eligible employees; (2) redemptions of shares following the death or
post-purchase disability, as defined in Section 72(m)(7) of the Code, of a
shareholder or a settlor of a living trust; (3) redemptions of shares purchased
at net asset value by private foundations or endowment funds where the initial
amount invested was at least $1,000,000; (4) redemptions of shares purchased by
an investor in amounts of $1,000,000 or more where such investor's dealer of
record, due to the nature of the investor's account, notifies AIM Distributors
prior to the time of investment that the dealer waives the payments otherwise
payable to the dealer as described in the third paragraph under the caption
"Terms and Conditions of Purchase of the AIM Funds -- All Groups of AIM Funds;"
and (5) pursuant to a Systematic Withdrawal Plan, provided that amounts
withdrawn under such plan do not exceed on an annual basis 12% of the value of
the shareholder's investment in Class A shares at the time the shareholder
elects to participate in the Systematic Withdrawal Plan.
 
    Shareholders who purchased $500,000 or more of Class A shares of the AIM/GT
Funds prior to June 1, 1998 are entitled to certain waivers of the contingent
deferred sales charge on those shares as described in the Statement of
Additional Information under "How to Purchase and Redeem Shares."
 
    REDEMPTIONS BY MAIL.  Redemption requests must be in writing and sent to the
Transfer Agent. Upon receipt of a redemption request in proper form, payment
will be made as soon as practicable, but in any event will normally be made
within seven days after receipt. However, in the event of a redemption of shares
purchased by check, the investor may be required to wait up to ten business days
before the redemption proceeds are sent. See "Terms and Conditions of Purchase
of the AIM Funds -- Timing of Purchase Orders."
 
    Requests for redemption must include: (a) original signatures of each
registered owner exactly as the shares are registered; (b) the Fund and the
account number of shares to be redeemed; (c) share certificates, either properly
endorsed or accompanied by a duly executed stock power, for the shares to be
redeemed if such certificates have been issued and the shares are not in the
custody of the Transfer Agent; (d) signature guarantees, as described below; and
(e) any additional documents that may be required for redemption by
corporations, partnership, trusts or other entities. The burden is on the
shareholder to inquire as to whether any additional documentation is required.
Any request not in proper form may be rejected and in such case must be renewed
in writing.
 
    In addition to these requirements, shareholders who have invested in a fund
to establish as IRA, should include the following information along with a
written request for either partial or full liquidation of fund shares; (a) a
statement as to whether or not the shareholder has attained age 59 1/2, and (b)
a statement as to whether or not the shareholder elects to have federal income
tax withheld from the proceeds of the liquidation.
 
   
    REDEMPTIONS BY TELEPHONE.  Shareholders may request a redemption by
telephone. If a shareholder does not wish to allow telephone redemptions by any
person in this account, he should decline that option on the account
application. The telephone redemption feature can be used only if: (a) the
redemption proceeds are to be mailed to the address of record or transferred
electronically or wired to the pre-authorized bank account; (b) there has been
no change of address of record on the account within the preceding 30 days; (c)
the shares to be redeemed are not in certificate form; (d) the person requesting
the redemption can provide proper identification information, and (e) the
proceeds of the redemption do not exceed $50,000. Accounts in AIM Distributors'
prototype retirement plans (such as IRA and IRA/SEP) or 403(b) plans are not
eligible for the telephone redemption option. AIM Distributors has made
arrangements with certain dealers and investment advisors to accept telephone
instructions for the redemption of shares. AIM Distributors reserves the right
to impose conditions on these dealers and investment advisors, including the
condition that they enter into agreements (which contain additional conditions
with respect to the redemption of shares) with AIM Distributors. The Transfer
Agent and AIM Distributors 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 appropriate form if they reasonably believe such
request to be genuine, but may in certain
    
 
                                      A-19
<PAGE>
                              AIM INVESTOR'S GUIDE
   
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 may include recordings of telephone
transactions (maintained for six months), requests for confirmation of the
shareholder's taxpayer identification number and current address, and mailings
of confirmations promptly after the transaction.
    
 
    EXPEDITED REDEMPTIONS (AIM MONEY MARKET FUND ONLY).  If a redemption order
is received prior to 11:30 a.m. Eastern Time, the redemption will be effective
on that day and AIM MONEY MARKET FUND will endeavor to transmit payment on that
same business day. If the redemption order is received after 11:30 a.m. and
prior to NYSE Close, the redemption will be made at the next determined net
asset value and payment will generally be transmitted on the next business day.
 
   
    REDEMPTIONS BY CHECK (AIM TAX-EXEMPT CASH FUND, AIM Cash Reserve Shares of
AIM MONEY MARKET FUND and Class A shares of AIM DOLLAR FUND).  After completing
the appropriate authorization form, shareholders may use checks to effect
redemptions from AIM TAX-EXEMPT CASH FUND, AIM Cash Reserve Shares of AIM MONEY
MARKET FUND and Class A shares of AIM DOLLAR FUND. This privilege does not apply
to retirement accounts or qualified plans. Checks may be drawn in any amount of
$250 or more. Checks drawn against insufficient shares in the account, against
shares held less than ten business days, or in amounts of less than the
applicable minimum will be returned to the payee. The payee of the check may
cash or deposit it in the same way as an ordinary bank check. When a check is
presented on the Transfer Agent for payment, the Transfer Agent will cause a
sufficient number of shares of such fund to be redeemed to cover the amount of
the check. Shareholders are entitled to dividends on the shares redeemed through
the day on which the check is presented to the Transfer Agent for payment.
    
 
   
    TIMING AND PRICING OF REDEMPTION ORDERS.  Shares of the various AIM Funds
(other than AIM MONEY MARKET FUND) are redeemed at their net asset value next
computed after a request for redemption in proper form (including signature
guarantees and other required documentation for written redemptions) is received
by the Transfer Agent or certain financial institutions (or their designees) who
are authorized to accept redemption orders on behalf of the AIM Funds, provided
that such orders are transmitted to the Transfer Agent prior to the time set for
receipt of such orders, except that shares that are subject to a contingent
deferred sales charge, may be subject to the imposition of deferred sales
charges that will be deducted from the redemption proceeds. See "Multiple
Distribution System" and "Contingent Deferred Sales Charge Program for Large
Purchases." Orders for the redemption of shares received in proper form prior to
NYSE Close on any business day of an AIM Fund will be confirmed at the price
determined as of the close of that day. Orders received after NYSE Close will be
confirmed at the price determined on the next business day of an AIM Fund.
Redemptions of shares of AIM MONEY MARKET FUND received prior to 12:00 noon or
NYSE Close on any business day of the Fund will be confirmed at the price next
determined. It is the responsibility of the dealer/financial institution to
ensure that all orders are transmitted on a timely basis. Any resulting loss
from the dealer/financial institution's failure to submit a request for
redemption within the prescribed time frame will be borne by that
dealer/financial institution. Telephone redemption requests must be made by NYSE
Close on any business day of an AIM Fund and will be confirmed at the price
determined as of the close of that day. No AIM Fund will accept requests which
specify a particular date for redemption or which specify any special
conditions.
    
 
    Payment of the proceeds of redeemed shares is normally made within seven
days following the redemption date. However, in the event of a redemption of
shares purchased by check, the investor may be required to wait up to ten
business days before the redemption proceeds are sent. See "Terms and Conditions
of Purchase of the AIM Funds -- Timing of Purchase Orders." A charge for special
handling (such as wiring of funds or expedited delivery services) may be made by
the Transfer Agent. The right of redemption may not be suspended or the date of
payment upon redemption postponed except under unusual circumstances such as
when trading on the NYSE is restricted or suspended. Payment of the proceeds of
redemptions relating to shares for which checks sent in payment have not yet
cleared will be delayed until it is determined that the check has cleared, which
may take up to ten business days from the date that the check is received.
 
    SIGNATURE GUARANTEES.  A signature guarantee is designed to protect the
investor, the AIM Funds, AIM Distributors, and their agents by verifying the
signature of each investor seeking to redeem, transfer, or exchange shares of an
AIM Fund. Examples of when signature guarantees are required are: (1)
redemptions by mail in excess of $50,000; (2) redemptions by mail if the
proceeds are to be paid to someone other than the name(s) in which the account
is registered; (3) written redemptions requesting proceeds to be sent to other
than the bank of record for the account; (4) redemptions requesting proceeds to
be sent to a new address or an
 
                                      A-20
<PAGE>
                              AIM INVESTOR'S GUIDE
address that has been changed within the past 30 days; (5) requests to transfer
the registration of shares to another owner, (6) telephone exchange and
telephone redemption authorization forms; (7) changes in previously designated
wiring or electronic funds transfer instructions, and (8) written redemptions or
exchanges of shares previously reported as lost, whether or not the redemption
amount is under $50,000 or the proceeds are to be sent to the address of record.
These requirements may be waived or modified upon notice to shareholders.
 
    Acceptable guarantors include banks, broker-dealers, credit unions, national
securities exchanges, savings associations and any other organization, provided
that such institution or organization qualifies as an "eligible guarantor
institution" as that term in defined in rules adopted by the Securities and
Exchange Commission ("SEC"), and further provided that such guarantor
institution is listed in one of the reference guides contained in the Transfer
Agent's current Signature Guarantee Standards and Procedures, such as certain
domestic banks, credit unions, securities dealers, or securities exchanges. The
Transfer Agent will also accept signatures with either: (1) a signature
guaranteed with a medallion stamp of the STAMP Program, or (2) a signature
guaranteed with a medallion stamp of the NYSE Medallion Signature Program,
provided that in either event, the amount of the transaction involved does not
exceed the surety coverage amount indicated on the medallion. For information
regarding whether a particular institution or organization qualifies as an
"eligible guarantor institution," an investor should contact the Client Services
Department of AFS.
 
   
    REINSTATEMENT PRIVILEGE (CLASS A SHARES ONLY).  Within 90 days of a
redemption, a shareholder may invest all or part of the redemption proceeds in
Class A shares of any AIM Fund at the net asset value next computed after
receipt by the Transfer Agent of the funds to be reinvested; provided, however,
if the redemption was made from Class A shares of either AIM LIMITED MATURITY
TREASURY FUND or AIM TAX-FREE INTERMEDIATE FUND, the reinvested proceeds will be
subject to the difference in sales charge between the shares redeemed and the
shares the proceeds are reinvested in. The shareholder must ask the Transfer
Agent for such privilege at the time of reinvestment. A realized gain on the
redemption is taxable, and reinvestment may alter any capital gains payable. If
there has been a loss on the redemption and shares of the same fund are
repurchased, all of the loss may not be tax deductible, depending on the timing
and amount reinvested. Under the Code, if the redemption proceeds of fund shares
on which a sales charge was paid are reinvested in shares of the same fund, or
exchanged for shares of another AIM Fund, at a reduced sales charge within 90
days of the payment of the sales charge, the shareholder's basis in the fund
shares redeemed may not include the amount of the sales charge paid, thereby
reducing the loss or increasing the gain recognized from the redemption;
however, the shareholder's basis in the fund shares purchased will include the
sales charge. Each AIM Fund may amend, suspend or cease offering the privilege
at any time as to shares redeemed after the date of such amendment, suspension
or cessation. This privilege may only be exercised once each year by a
shareholder with respect to each AIM Fund.
    
 
   
    Shareholders who are assessed a contingent deferred sales charge in
connection with the redemption of Class A shares and who subsequently reinvest a
portion or all of the value of the redeemed shares in Class A shares of any AIM
Fund within 90 days after such redemption may do so at net asset value if such
privilege is claimed at the time of reinvestment. Such reinvested proceeds will
not be subject to either a front-end sales charge at the time of reinvestment or
an additional contingent deferred sales charge upon subsequent redemption. In
order to exercise this reinvestment privilege, the shareholder must notify the
Transfer Agent of his or her intent to do so at the time of reinvestment. This
reinvestment privilege does not apply to Class B or Class C shares.
    
 
DETERMINATION OF NET ASSET VALUE
 
    The net asset value per share (or share price) of each AIM Fund is
determined as of 4:00 p.m. Eastern Time (12:00 noon Eastern Time and NYSE Close
with respect to AIM MONEY MARKET FUND) on each "business day" of a fund as
previously defined. In the event the NYSE closes early (i.e. before 4:00 p.m.
Eastern Time) on a particular day, the net asset value of an AIM Fund's share
will be determined as of the close of the NYSE on such day. For purposes of
defining net asset value per share, futures and options contracts generally will
be valued 15 minutes after the close of trading of the NYSE. The net asset value
per share is calculated by subtracting a class' liabilities from its assets and
dividing the result by the total number of class shares outstanding. The
determination of net asset value per share is made in accordance with generally
accepted accounting principles. Among other items, liabilities include accrued
expenses and dividends payable, and total assets include portfolio securities
valued at their market value, as well as income accrued but
 
                                      A-21
<PAGE>
                              AIM INVESTOR'S GUIDE
not yet received. Securities for which market quotations are not readily
available are valued at fair value as determined in good faith by or under the
supervision of the fund's officers and in accordance with methods which are
specifically authorized by its governing Board of Directors or Trustees.
Short-term obligations with maturities of 60 days or less, and the securities
held by the Money Market Funds, are valued at amortized cost as reflecting fair
value. AIM HIGH INCOME MUNICIPAL FUND, AIM MUNICIPAL BOARD FUND, AIM TAX-EXEMPT
BOND FUND OF CONNECTICUT and AIM TAX-FREE INTERMEDIATE FUND value variable rate
securities that have an unconditional demand or put feature exercisable within
seven days or less at par, which reflects the market value of such securities.
 
   
    Generally, trading in foreign securities, corporate bonds, U.S. Government
securities and money market instruments is substantially completed each day at
various times prior to the close of the NYSE. The values of such securities used
in computing the net asset value of an AIM Fund's shares are determined as of
such times. Foreign currency exchange rates are also generally determined prior
to the close of the NYSE. Occasionally, events affecting the values of such
securities and such exchange rates may occur between the times at which the
values of the securities are determined and the close of the NYSE which will not
be reflected in the computation of an AIM Fund's net asset value. If events
materially affecting the value of such securities occur during such period, then
these securities will be valued at their fair value as determined in good faith
by or under the supervision of the Board of Directors or Trustees of the
applicable AIM Fund. Securities listed primarily on foreign exchanges may trade
on days when the NYSE is closed (such as a Saturday). As a result, the net asset
value of a fund may be significantly affected by such trading on days when
shareholders cannot purchase or redeem shares of that fund.
    
 
                                      A-22
<PAGE>
                              AIM INVESTOR'S GUIDE
 
   
DIVIDENDS, DISTRIBUTIONS AND TAX MATTERS
    
 
   
DIVIDENDS AND DISTRIBUTIONS
    
 
   
    Each AIM Fund's policy regarding the payment of dividends and distributions
is set forth below.
    
 
   
<TABLE>
<CAPTION>
                                                                                    DISTRIBUTIONS    DISTRIBUTIONS
                                                                                       OF NET           OF NET
                                                           DIVIDENDS FROM             REALIZED         REALIZED
                                                           NET INVESTMENT            SHORT-TERM        LONG-TERM
FUND                                                           INCOME               CAPITAL GAINS    CAPITAL GAINS
- --------------------------------------------------  ----------------------------  -----------------  -------------
<S>                                                 <C>                           <C>                <C>
AIM ADVISOR FLEX FUND.............................  declared and paid quarterly   quarterly          annually
AIM ADVISOR INTERNATIONAL VALUE FUND..............  declared and paid annually    annually           annually
AIM ADVISOR LARGE CAP VALUE FUND..................  declared and paid quarterly   quarterly          annually
AIM ADVISOR MULTIFLEX FUND........................  declared and paid quarterly   quarterly          annually
AIM ADVISOR REAL ESTATE FUND......................  declared and paid quarterly   quarterly          annually
AIM AGGRESSIVE GROWTH FUND........................  declared and paid annually    annually           annually
AIM AMERICA VALUE FUND............................  declared and paid annually    annually           annually
AIM ASIAN GROWTH FUND.............................  declared and paid annually    annually           annually
AIM BALANCED FUND.................................  declared and paid quarterly   annually           annually
AIM BLUE CHIP FUND................................  declared and paid annually    annually           annually
AIM CAPITAL DEVELOPMENT FUND......................  declared and paid annually    annually           annually
AIM CHARTER FUND..................................  declared and paid quarterly   annually           annually
AIM CONSTELLATION FUND............................  declared and paid annually    annually           annually
AIM DEVELOPING MARKETS FUND.......................  declared and paid annually    annually           annually
AIM DOLLAR FUND...................................  declared daily; paid monthly  annually           annually
AIM EMERGING MARKETS FUND.........................  declared and paid annually    annually           annually
AIM EUROPE GROWTH FUND............................  declared and paid annually    annually           annually
AIM EUROPEAN DEVELOPMENT FUND.....................  declared and paid annually    annually           annually
AIM GLOBAL AGGRESSIVE GROWTH FUND.................  declared and paid annually    annually           annually
AIM GLOBAL CONSUMER PRODUCTS AND SERVICES FUND....  declared and paid annually    annually           annually
AIM GLOBAL FINANCIAL SERVICES FUND................  declared and paid annually    annually           annually
AIM GLOBAL GOVERNMENT INCOME FUND.................  declared and paid monthly     annually           annually
AIM GLOBAL GROWTH FUND............................  declared and paid annually    annually           annually
AIM GLOBAL GROWTH & INCOME FUND...................  declared and paid quarterly   annually           annually
AIM GLOBAL HEALTH CARE FUND.......................  declared and paid annually    annually           annually
AIM GLOBAL HIGH INCOME FUND.......................  declared and paid monthly     annually           annually
AIM GLOBAL INCOME FUND............................  declared daily; paid monthly  annually           annually
AIM GLOBAL INFRASTRUCTURE FUND....................  declared and paid annually    annually           annually
AIM GLOBAL RESOURCES FUND.........................  declared and paid annually    annually           annually
AIM GLOBAL TELECOMMUNICATIONS FUND................  declared and paid annually    annually           annually
AIM GLOBAL TRENDS FUND............................  declared and paid annually    annually           annually
AIM GLOBAL UTILITIES FUND.........................  declared daily; paid monthly  annually           annually
AIM HIGH INCOME MUNICIPAL FUND....................  declared daily; paid monthly  annually           annually
AIM HIGH YIELD FUND...............................  declared daily; paid monthly  annually           annually
AIM INCOME FUND...................................  declared daily; paid monthly  annually           annually
AIM INTERMEDIATE GOVERNMENT FUND..................  declared daily; paid monthly  annually           annually
AIM INTERNATIONAL EQUITY FUND.....................  declared and paid annually    annually           annually
AIM INTERNATIONAL GROWTH FUND.....................  declared and paid annually    annually           annually
AIM JAPAN GROWTH FUND.............................  declared and paid annually    annually           annually
AIM LATIN AMERICAN GROWTH FUND....................  declared and paid annually    annually           annually
AIM LIMITED MATURITY TREASURY FUND................  declared daily; paid monthly  annually           annually
AIM MID CAP GROWTH FUND...........................  declared and paid annually    annually           annually
AIM MONEY MARKET FUND.............................  declared daily; paid monthly  at least annually  annually
AIM MUNICIPAL BOND FUND...........................  declared daily; paid monthly  annually           annually
AIM NEW PACIFIC GROWTH FUND.......................  declared and paid annually    annually           annually
AIM SELECT GROWTH FUND............................  declared and paid annually    annually           annually
AIM SMALL CAP EQUITY FUND.........................  declared and paid annually    annually           annually
AIM SMALL CAP OPPORTUNITIES FUND..................  declared and paid annually    annually           annually
AIM STRATEGIC INCOME FUND.........................  declared and paid monthly     annually           annually
AIM TAX-EXEMPT BOND FUND OF CONNECTICUT...........  declared daily; paid monthly  annually           annually
AIM TAX-EXEMPT CASH FUND..........................  declared daily; paid monthly  at least annually  annually
AIM TAX-FREE INTERMEDIATE FUND....................  declared daily; paid monthly  annually           annually
AIM VALUE FUND....................................  declared and paid annually    annually           annually
AIM WEINGARTEN FUND...............................  declared and paid annually    annually           annually
AIM WORLDWIDE GROWTH FUND.........................  declared and paid annually    annually           annually
</TABLE>
    
 
    In determining the amount of capital gains, if any, available for
distribution, net capital gains are offset against available net capital losses,
if any, carried forward from previous fiscal periods. Each AIM Fund may make
additional distributions, if necessary, to avoid a non-deductible 4% federal
excise tax on certain undistributed income and capital gain (the "Excise Tax").
 
   
    All dividends and distributions of an AIM Fund are automatically reinvested
on the payment date in full and fractional shares of such fund, unless the
shareholder has made an alternate election as to the method of payment.
Dividends and distributions attributable to a class are reinvested in additional
shares of such class, absent an election by a shareholder to receive cash or to
have such dividends and distributions reinvested in
    
 
                                      A-23
<PAGE>
                              AIM INVESTOR'S GUIDE
   
like shares of another Multiple Class Fund, to the extent permitted. For funds
that do not declare a dividend daily, such dividends and distributions will be
reinvested at the net asset value per share determined on the ex-dividend date.
For funds that declare a dividend daily, such dividends and distributions will
be reinvested at the net asset value per share determined on the payable date.
Shareholders may elect, by written notice to the Transfer Agent, to receive such
distributions, or the dividend portion thereof, in cash, or to invest such
dividends and distributions in shares of another fund in the AIM Funds; provided
that (i) dividends and distributions attributable to Class B shares may only be
reinvested in Class B shares, (ii) dividends and distributions attributable to
Class C shares may only be reinvested in Class C shares, (iii) dividends and
distributions attributable to Class A shares may not be reinvested in Class B or
Class C shares, and (iv) dividends and distributions attributable to the AIM
Cash Reserve Shares of AIM MONEY MARKET FUND may not be reinvested in the Class
A shares of that Fund or in any Class B or Class C shares. Investors who have
not previously selected such a reinvestment option on the account application
form may contact the Transfer Agent at any time to obtain a form to authorize
such reinvestments in another AIM Fund. Such reinvestments into the AIM Funds
are not subject to sales charges, and shares so purchased are automatically
credited to the account of the shareholder.
    
 
    Dividends on Class B and Class C shares of an AIM Fund are expected to be
lower than dividends for Class A shares of that fund or AIM Cash Reserve Shares
because of higher distribution fees paid by Class B and Class C shares.
Dividends on all shares may also be affected by other class-specific expenses.
 
   
    Changes in the form of dividend and distribution payments may be made by the
shareholder at any time by notice to the Transfer Agent and are effective as to
any subsequent payment if such notice is received by the Transfer Agent prior to
the record date of such payment. Any dividend and distribution election remains
in effect until the Transfer Agent receives a revised written election by the
shareholder.
    
 
   
    Any dividend or distribution paid by a fund which does not declare dividends
daily has the effect of reducing the net asset value per share on the
ex-dividend date by the amount of the dividend or distribution. Therefore, a
dividend or distribution declared shortly after a purchase of shares by an
investor would represent, in substance, a return of capital to the shareholder
with respect to such shares even though it would be subject to income taxes, as
discussed below.
    
 
TAX MATTERS
 
    Each AIM Fund has qualified and intends to continue to qualify for treatment
as a regulated investment company under Subchapter M of the Code. As long as a
fund qualifies for this tax treatment, it is not subject to federal income tax
on net investment income, net capital gains and net gains from foreign currency
transactions, if any, that are distributed to its shareholders. Each fund, for
all federal tax purposes (including determining taxable income, distribution
requirements and other requirements of Subchapter M), is treated as a separate
corporation. Therefore, no fund may offset its gains against another fund's
losses, and each fund must individually comply with all of the provisions of the
Code that are applicable to its operations.
 
   
    TAX TREATMENT OF DIVIDENDS AND DISTRIBUTIONS--GENERAL.  Because each AIM
Fund intends to distribute to its shareholders substantially all of its net
investment income, net realized capital gains and net gains from foreign
currency transactions, if any, it is not expected that any such fund will be
required to pay any federal income tax. Each AIM Fund also intends to meet the
distribution requirements of the Code to avoid imposition of the Excise Tax.
Nevertheless, shareholders normally are subject to federal income tax, and any
applicable state and local income taxes, on the dividends and distributions
received by them from a fund whether in the form of cash or additional fund
shares, except for "exempt-interest dividends" paid by AIM HIGH INCOME MUNICIPAL
FUND, AIM MUNICIPAL BOND FUND, AIM TAX-EXEMPT BOND FUND OF CONNECTICUT, AIM
TAX-EXEMPT CASH FUND and AIM TAX-FREE INTERMEDIATE FUND (the "Tax-Exempt
Funds"), which are exempt from federal income tax. With respect to tax-exempt
shareholders, dividends and distributions from the AIM Funds are not subject to
federal income taxation to the extent permitted under the applicable tax
exemption.
    
 
    Dividends from an AIM Fund's net investment income, net short-term capital
gain and net gains from certain foreign currency transactions are taxable to its
shareholders as ordinary income to the extent of its earnings and profits.
Distributions of net capital gain (i.e., the excess of net long-term capital
gain over net short-term capital loss) are taxable as long-term capital gains,
regardless of the length of time the shareholder held his shares. Under the
Taxpayer Relief Act of 1997, different maximum tax rates apply to a non-
 
                                      A-24
<PAGE>
                              AIM INVESTOR'S GUIDE
corporate taxpayer's net capital gain depending on the taxpayer's holding period
and marginal rate of federal income tax -- generally, 28% for gain recognized on
capital assets held for more than one year but not more than 18 months and 20%
(10% for taxpayers in the 15% marginal tax bracket) for gain recognized on
capital assets held for more than 18 months. An AIM Fund may divide each net
capital gain distribution into a 28% rate gain distribution and a 20% rate gain
distribution (in accordance with its holding periods for the securities it sold
that generated the distributed gain), in which event its shareholders must treat
those portions accordingly; thus, the relevant holding period is determined by
how long the fund has held the securities on which the gain was realized, not by
how long a shareholder has held fund shares.
 
   
    Dividends paid by a fund (but not other distributions) may qualify for the
federal 70% dividends received deduction for corporate shareholders to the
extent of the qualifying dividends received by the fund on domestic common or
preferred stock. It is not likely that dividends received from AIM ADVISOR
INTERNATIONAL VALUE FUND, AIM ADVISOR REAL ESTATE FUND, AIM ASIAN GROWTH FUND,
AIM DEVELOPING MARKETS FUND, AIM DOLLAR FUND, AIM EMERGING MARKETS FUND, AIM
EUROPEAN DEVELOPMENT FUND, AIM EUROPE GROWTH FUND, AIM GLOBAL AGGRESSIVE GROWTH
FUND, AIM GLOBAL GOVERNMENT INCOME FUND, AIM GLOBAL GROWTH FUND, AIM GLOBAL HIGH
INCOME FUND, AIM GLOBAL INCOME FUND, AIM GLOBAL TRENDS FUND, AIM HIGH YIELD
FUND, AIM INCOME FUND, AIM INTERMEDIATE GOVERNMENT FUND, AIM INTERNATIONAL
EQUITY FUND, AIM INTERNATIONAL GROWTH FUND, AIM JAPAN GROWTH FUND, AIM LATIN
AMERICAN GROWTH FUND, AIM LIMITED MATURITY TREASURY FUND, AIM MONEY MARKET FUND,
AIM NEW PACIFIC GROWTH FUND, AIM STRATEGIC INCOME FUND or any of the Tax-Exempt
Funds will qualify for this dividends received deduction.
    
 
   
    Shortly after the end of each year, shareholders will receive information
regarding the amount and federal income tax treatment of all dividends and
distributions paid during the year. The information regarding capital gain
distributions will designate the portions thereof subject to the different
maximum rates of tax applicable to non-corporate taxpayers' net capital gain
indicated above. Certain dividends and distributions declared in October,
November or December of a calendar year are taxable to shareholders as though
received on December 31 of that year if paid to them during January of the
following calendar year. No gain or loss will be recognized by shareholders upon
the automatic conversion of Class B shares of a Multiple Class Fund into Class A
shares of such fund.
    
 
    For each redemption of a fund's shares by a non-exempt shareholder, the fund
or the securities dealer effecting the transaction is required to file an
information return with the IRS.
 
   
    TO AVOID BEING SUBJECT TO FEDERAL INCOME TAX WITHHOLDING AT THE RATE OF 31%
ON TAXABLE DIVIDENDS, DISTRIBUTIONS AND REDEMPTION PAYMENTS, SHAREHOLDERS OF A
FUND MUST FURNISH THE FUND WITH THEIR TAXPAYER IDENTIFICATION NUMBER AND CERTIFY
UNDER PENALTIES OF PERJURY THAT THE NUMBER PROVIDED IS CORRECT AND THAT THEY ARE
NOT SUBJECT TO BACKUP WITHHOLDING FOR ANY REASON.
    
 
    Under the Code, nonresident alien individuals, foreign partnerships and
foreign corporations may be subject to federal income tax withholding at a 30%
rate on ordinary income dividends. Under applicable treaty law, residents of
treaty countries may qualify for a reduced rate of withholding or a withholding
exemption.
 
   
    DIVIDENDS AND DISTRIBUTIONS MAY BE SUBJECT TO TREATMENT UNDER FOREIGN, STATE
OR LOCAL TAX LAWS THAT DIFFERS FROM THE FEDERAL INCOME TAX CONSEQUENCES
DISCUSSED HEREIN. ADDITIONAL INFORMATION ABOUT TAXES IS SET FORTH IN THE
STATEMENTS OF ADDITIONAL INFORMATION. INVESTORS SHOULD CONSULT THEIR TAX
ADVISORS BEFORE INVESTING.
    
 
    TAX-EXEMPT FUNDS -- SPECIAL TAX INFORMATION.  Shareholders will not be
required to include the "exempt-interest" portion of dividends paid by the
Tax-Exempt Funds in their gross income for federal income tax purposes. However,
shareholders will be required to report the receipt of exempt-interest dividends
and other tax-exempt interest on their federal income tax returns. Moreover,
exempt-interest dividends from the Tax-Exempt Funds may be subject to state
income taxes, may affect the amount of social security and railroad retirement
benefits subject to federal income tax, may affect the deductibility of interest
on certain indebtedness of a shareholder, and may have other collateral federal
income tax consequences. In addition, the Tax-Exempt Funds may invest in
Municipal Securities the interest on which will constitute an item of tax
preference and which therefore could give rise to a federal alternative minimum
tax liability for certain shareholders; each Tax-Exempt Fund may invest up to
20% of its net assets in such securities and other
 
                                      A-25
<PAGE>
                              AIM INVESTOR'S GUIDE
taxable securities. For additional information concerning the alternative
minimum tax and certain collateral tax consequences of the receipt of
exempt-interest dividends, see the Statements of Additional Information
applicable to the Tax-Exempt Funds.
 
    The Tax-Exempt Funds may pay dividends to shareholders that are taxable, but
will endeavor to avoid investments that would result in taxable dividends. The
percentage of dividends that constitutes exempt-interest dividends, and the
percentage thereof (if any) that constitutes items of tax preference, will be
determined annually. These percentages may differ from the actual percentages
for any particular day.
 
   
    To the extent that dividends are derived from taxable investments or net
realized short-term capital gains, they will constitute ordinary income for
federal income tax purposes, whether received in cash or additional fund shares.
Distributions of net capital gain will be taxable as long-term capital gains,
whether received in cash or additional fund shares and regardless of the length
of time a shareholder may have held his shares.
    
 
    From time to time, proposals have been introduced before Congress that would
have the effect of reducing or eliminating the federal tax exemption on
Municipal Securities. If such a proposal were enacted, the ability of the
Tax-Exempt Funds to pay exempt-interest dividends might be adversely affected.
 
   
    AIM AMERICA VALUE FUND, AIM DOLLAR FUND, AIM GLOBAL GOVERNMENT INCOME FUND,
AIM GLOBAL GROWTH & INCOME FUND, AIM GLOBAL HIGH INCOME FUND, AIM INTERMEDIATE
GOVERNMENT FUND, AIM LIMITED MATURITY TREASURY FUND, AIM MID CAP GROWTH FUND,
AIM SMALL CAP EQUITY FUND, AIM STRATEGIC INCOME FUND -- SPECIAL TAX
INFORMATION.  Certain states exempt from income taxes dividends paid by mutual
funds attributable to interest on U.S. Treasury and certain other U.S.
government obligations. Investors should consult with their own tax advisors
concerning the availability of such exemption.
    
 
   
    AIM ADVISOR INTERNATIONAL VALUE FUND, AIM ASIAN GROWTH FUND, AIM DEVELOPING
MARKETS FUND, AIM EMERGING MARKETS FUND, AIM EUROPE GROWTH FUND, AIM EUROPEAN
DEVELOPMENT FUND, AIM GLOBAL AGGRESSIVE GROWTH FUND, AIM GLOBAL CONSUMER
PRODUCTS AND SERVICES FUND, AIM GLOBAL FINANCIAL SERVICES FUND, AIM GLOBAL
GROWTH FUND, AIM GLOBAL GROWTH & INCOME FUND, AIM GLOBAL HEALTH CARE FUND, AIM
GLOBAL INCOME FUND, AIM GLOBAL INFRASTRUCTURE FUND, AIM GLOBAL RESOURCES FUND,
AIM GLOBAL TELECOMMUNICATIONS FUND, AIM GLOBAL UTILITIES FUND, AIM INTERNATIONAL
EQUITY FUND, AIM INTERNATIONAL GROWTH FUND, AIM JAPAN GROWTH FUND, AIM LATIN
AMERICAN GROWTH FUND, AIM NEW PACIFIC GROWTH FUND, AIM WORLDWIDE GROWTH FUND --
SPECIAL TAX INFORMATION.  For taxable years in which it is eligible to do so,
each of these funds may elect to pass through to its shareholders credits for
foreign taxes paid. If a fund makes such an election, a shareholder who receives
a distribution (1) will be required to include in gross income his proportionate
share of foreign taxes allocable to the distribution and (2) may claim a credit
or deduction for such share for his taxable year in which the distribution is
received, subject to the general limitations imposed on the allowance of foreign
tax credits and deductions. Shareholders should also note that certain gains or
losses attributable to fluctuations in exchange rates or foreign currency
forward contracts may increase or decrease the amount of income of the fund
available for distribution to shareholders and should note that if, for any
fund, such losses exceed other income during a taxable year, the fund would not
be able to pay ordinary income dividends for that year.
    
 
GENERAL INFORMATION
 
    CUSTODIAN AND TRANSFER AGENT.  State Street Bank and Trust Company, 225
Franklin Street, Boston, Massachusetts 02110, serves as custodian for the
portfolio securities and cash of the AIM Funds other than AIM HIGH INCOME
MUNICIPAL FUND, AIM MUNICIPAL BOND FUND, AIM LIMITED MATURITY TREASURY FUND, AIM
TAX-EXEMPT BOND FUND OF CONNECTICUT, AIM TAX-EXEMPT CASH FUND and AIM TAX-FREE
INTERMEDIATE FUND, for which The Bank of New York, 90 Washington Street, 11th
Floor, New York, New York 10286, serves as custodian. Chase Bank of Texas, N.A.,
P.O. Box 2558, Houston, Texas 77252-8084, serves as Sub-Custodian for retail
purchases of the AIM Funds.
 
    A I M Fund Services, Inc., P.O. Box 4739, Houston, Texas 77210-4739, a
wholly-owned subsidiary of AIM, serves as each AIM Fund's transfer agent and
dividend payment agent.
 
    SHAREHOLDER INQUIRIES.  Shareholder inquiries concerning their accounts
should be directed to an A I M Fund Services, Inc. Client Services
Representative by calling (800) 959-4246. The Transfer Agent may impose certain
copying charges for requests for copies of shareholder account statements and
other historical account information older than the current year and the
immediately preceding year.
 
                                      A-26
<PAGE>
                              AIM INVESTOR'S GUIDE
 
   
    YEAR 2000 COMPLIANCE PROJECT.  In providing services to the AIM Funds, AIM
Management and its subsidiaries rely on both internal software systems as well
as external software systems provided by third parties (the "Software"). Many
software systems in use today are unable to distinguish between the year 2000
from the year 1900. This defect if not cured will likely adversely affect the
services that AIM Management, its subsidiaries and other service providers to
the AIM Funds provide the AIM Funds and their shareholders.
    
 
    To address this issue, AIM Management and its subsidiaries, together with
independent technology consultants, are undertaking a comprehensive Year 2000
Compliance Project (the "Project"). The Project consists of three phases, namely
(i) inventorying every software application in use at AIM Management and its
subsidiaries, as well as remote, third party software systems on which AIM
Management and its subsidiaries rely, (ii) identifying those applications that
may not function properly after December 31, 1999, and (iii) correcting and
subsequently testing those applications that may not function properly after
December 31, 1999. Phases (i) and (ii) are complete and Phase (iii) has
commenced. The Project is scheduled to be completed during the fourth quarter of
1998. Software applications acquired by AIM Management and its subsidiaries
after completion of the Project will be viewed to confirm Year 2000 compliance
upon installation.
 
    OTHER INFORMATION.  This Prospectus sets forth basic information that
investors should know about the fund(s) named on the cover page prior to
investing. Recipients of this Prospectus will be provided with a copy of the
annual report of the fund(s) to which this Prospectus relates, upon request and
without charge. If several members of a household own shares of the same fund,
only one annual or semi-annual report will be mailed to that address. To receive
additional copies, please call (800) 347-4246, or write to A I M Distributors,
Inc., P.O. Box 4739, Houston, Texas 77210-4739. A Statement of Additional
Information has been filed with the SEC and is available upon request and
without charge, by writing or calling AIM Distributors. 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. This Prospectus omits certain information contained in the
registration statement filed with the SEC. Copies of the registration statement,
including items omitted from this Prospectus, may be obtained from the SEC by
paying the charges prescribed under its rules and regulations.
 
                                      A-27
<PAGE>
                             AIM GLOBAL TRENDS FUND
 
   
                                     [LOGO]
 
INVESTMENT MANAGER
A I M Advisors, Inc.
11 Greenway Plaza, Suite 100
Houston, TX 77046-1173
    
 
   
SUB-ADVISER
INVESCO (NY), Inc.
50 California Street, 27th Floor
San Francisco, CA 94111
    
 
   
PRINCIPAL UNDERWRITER
A I M Distributors, Inc.
P.O. Box 4739
Houston, TX 77210-4739
    
 
   
TRANSFER AGENT
A I M Fund Services, Inc.
P.O. Box 4739
Houston, TX 77210-4739
    
 
   
CUSTODIAN
State Street Bank and Trust Company
225 Franklin Street
Boston, MA 02110
    
 
   
INDEPENDENT ACCOUNTANTS
[            ]
[            ]
[            ]
    
 
   
  For more complete information about any other fund in The AIM Family of
  Funds-Registered Trademark-, including charges and expenses, please call
  (800) 347-4246 or write to A I M Distributors, Inc. and request a free
  prospectus. Please read the prospectus carefully before you invest or send
  money.
    
<PAGE>
   
                                     [LOGO]
 
                            AIM GLOBAL TRENDS FUND:
                                 ADVISOR CLASS
    
                        PROSPECTUS -- SEPTEMBER 8, 1998
- --------------------------------------------------------------------------------
 
   
This Prospectus contains information about AIM Global Trends Fund (the "Fund"),
which is a series investment portfolio of AIM Series Trust (the "Trust"), an
open-end, series, management investment company. The Fund is a diversified
portfolio which seeks long-term growth of capital. Unlike a typical mutual fund,
which invests directly in portfolio securities, the Fund invests substantially
all of its assets in shares of the AIM theme funds: AIM Global Consumer Products
and Services Fund; AIM Global Financial Services Fund; AIM Global Health Care
Fund; AIM Global Infrastructure Fund; AIM Global Resources Fund; and AIM Global
Telecommunications Fund (collectively, the "Underlying Theme Funds").
    
 
   
This Prospectus sets forth concisely the information about the Fund that
prospective investors should know before investing. It should be read and
retained for future reference. A Statement of Additional Information, dated
September 8, 1998, has been filed with the Securities and Exchange Commission
("SEC") and is incorporated herein by reference. The Statement of Additional
Information is available without charge upon written request to the Trust at 11
Greenway Plaza, Suite 100, Houston, Texas 77046-1173, or by calling (800)
347-4246. 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. Additional information about the Fund may
also be obtained from http://www.aimfunds.com.
    
 
   
THE FUND'S SHARES ARE NOT DEPOSITS OR OBLIGATIONS OF, OR GUARANTEED OR ENDORSED
 BY, ANY BANK, AND THE FUND'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. SHARES OF THE FUND INVOLVE INVESTMENT RISKS,
                   INCLUDING THE POSSIBLE LOSS OF PRINCIPAL.
    
 
- --------------------------------------------------------------------------------
 
   
THESE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE SECURITIES AND
 EXCHANGE COMMISSION NOR HAS THE SECURITIES AND EXCHANGE COMMISSION PASSED ON
   THE ACCURACY OR ADEQUACY OF THIS PROSPECTUS.      ANY REPRESENTATION TO
                      THE CONTRARY IS A CRIMINAL OFFENSE.
    
 
                               Prospectus Page 1
<PAGE>
                             AIM GLOBAL TRENDS FUND
 
                               TABLE OF CONTENTS
- ------------------------------------------------------------
 
   
<TABLE>
<CAPTION>
                                                        Page
                                                        ----
<S>                                                     <C>
Summary...............................................     2
Financial Highlights..................................     6
Investment Objective and Policies.....................     7
Description of the Underlying Theme Funds.............     8
Risk Factors and Special Considerations...............    10
Management............................................    13
Other Information.....................................    14
Appendix..............................................    16
</TABLE>
    
 
- --------------------------------------------------------------------------------
 
   
                                    SUMMARY
    
 
- --------------------------------------------------------------------------------
 
   
<TABLE>
<S>                            <C>                                               <C>
The Fund:                      The Fund is a diversified series of the Trust.
Investment Objective:          The Fund seeks long-term growth of capital.
Principal Investments:         The Fund invests, under normal circumstances, substantially all of its assets in shares of the
                               following Underlying Theme Funds: AIM Global Consumer Products and Services Fund ("Consumer Products
                               and Services Fund"); AIM Global Financial Services Fund ("Financial Services Fund"); AIM Global
                               Health Care Fund ("Health Care Fund"); AIM Global Infrastructure Fund ("Infrastructure Fund"); AIM
                               Global Resources Fund ("Resources Fund"); and AIM Global Telecommunications Fund ("Telecommu-
                               nications Fund"). The allocation of the Fund's assets to the Underlying Theme Funds is governed
                               strictly by a formula described herein. See "Investment Objective and Policies."
Investment Managers:           The Fund is managed by A I M Advisors, Inc. ("AIM") and is sub-advised and sub-administered by
                               INVESCO (NY), Inc. (the "Sub-adviser"). AIM and the Sub-adviser and their worldwide asset management
                               affiliates provide investment management and/or administrative services to institutional, corporate
                               and individual clients around the world. AIM and the Sub-adviser are both indirect wholly owned
                               subsidiaries of AMVESCAP PLC. AMVESCAP PLC and its subsidiaries are an independent investment man-
                               agement group that has a significant presence in the institutional and retail segment of the
                               investment management industry in North America and Europe, and a growing presence in Asia. AIM was
                               organized in 1976 and, together with its subsidiaries, currently advises approximately 90 investment
                               company portfolios.
Purchasing Shares:             Advisor Class shares are offered through this Prospectus to (a) trustees or other fiduciaries
                               purchasing shares for employee benefit plans which are sponsored by organizations which have at least
                               1,000 employees; (b) any account with assets of at least $10,000 if (i) a financial planner, trust
</TABLE>
    
 
                               Prospectus Page 2
<PAGE>
                             AIM GLOBAL TRENDS FUND
 
                                    SUMMARY
                                  (Continued)
- --------------------------------------------------------------------------------
   
<TABLE>
<S>                            <C>                                               <C>
                               company, bank trust department or registered investment adviser has investment discretion over such
                               account, and (ii) the account holder pays such person as compensation for its advice and other
                               services an annual fee of at least 0.50% on the assets in the account; (c) any account with assets of
                               a least $10,000 if (i) such account is established under a "wrap fee" program, and (ii) the account
                               holder pays the sponsor of such program an annual fee of at least 0.50% on the assets in the account;
                               (d) accounts advised by the Sub-adviser or one of the companies formerly affiliated with the Asset
                               Management Division of Liechtenstein Global Trust AG, provided such accounts were invested in Advisor
                               Class shares of any of the funds in The AIM Family of Funds that are sub-advised by the Sub-adviser
                               ("AIM Funds") on May 29, 1998; and (e) any of the companies affiliated with AMVESCAP PLC.
                               Pursuant to a separate prospectus, the Fund also offers Class A, Class B and Class C shares, which
                               represent interests in the Fund. The Class A, Class B and Class C shares have different distribution
                               arrangements.
                               Initial investments in Advisor Class shares must be at least $500 and additional investments must be
                               at least $50. The distributor of the Advisor Class shares is A I M Distributors, Inc. ("AIM
                               Distributors"), P.O. Box 4739, Houston, TX 77210-4739. See "How to Purchase Shares."
Exchange Privilege:            The Fund is among those mutual funds distributed by AIM Distributors (collectively, "The AIM Family
                               of Funds"). Advisor Class shares of the Fund may be exchanged for Advisor Class shares of certain
                               funds in The AIM Family of Funds in the manner and subject to the policies and charges set forth
                               herein. See "Exchange Privilege."
Redeeming Shares:              Advisor Class shareholders of the Fund may redeem all or a portion of their shares at the Fund's net
                               asset value on any business day. See "How to Redeem Shares."
Distributions:                 The Fund currently declares and pays dividends from net investment income, if any, on an annual
                               basis. The Fund makes distributions of realized capital gains, if any, on an annual basis. Dividends
                               and distributions of the Fund may be reinvested at net asset value without payment of a sales charge
                               in the Fund's shares or may be invested in shares of the other funds in The AIM Family of Funds. See
                               "Dividends, Distributions and Tax
                               Matters."
Risk Factors:                  There is no assurance that the Fund will achieve its investment objective. The Fund's net asset value
                               will fluctuate, reflecting fluctuations in the net asset value of the shares of the Underlying Theme
                               Funds. Investors should review the investment objectives and policies of the Fund and the Underlying
                               Theme Funds carefully and consider their ability to assume these and other risks involved in
                               purchasing shares of the Fund.
                               See "Investment Objective and Policies," "Description of the Underlying Theme Funds" and "Risk
                               Factors and Special Considerations." As a recently organized entity, the Fund has a limited operating
                               history.
</TABLE>
    
 
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, AIMFUNDS.COM, LA
FAMILIA AIM DE FONDOS AND LA FAMILIA AIM DE FONDOS AND DESIGN ARE REGISTERED
SERVICE MARKS AND INVEST WITH DISCIPLINE AND AIM BANK CONNECTION ARE SERVICE
MARKS OF A I M MANAGEMENT GROUP INC.
 
                               Prospectus Page 3
<PAGE>
   
TABLE OF FEES AND EXPENSES. The expenses and maximum transaction costs
associated with investing in Advisor Class shares of the Fund are reflected in
the following table:
    
 
   
<TABLE>
<S>                                                                                         <C>
SHAREHOLDER TRANSACTIONS COSTS:
  Maximum sales charge on purchase of shares (as a % of offering price)...................    None
  Sales charges on reinvested distributions to shareholders...............................    None
  Maximum deferred sales charges (as a % of net asset value at time of purchase or sale,
   whichever is less).....................................................................    None
  Redemption charges......................................................................    None
  Exchange fees...........................................................................    None
 
ANNUAL FUND OPERATING EXPENSES*:
 (AS A % OF AVERAGE NET ASSETS)
  Investment management fees..............................................................    None
  12b-1 distribution and service fees.....................................................    None
  Other expenses..........................................................................    None
                                                                                            -------
  Total Fund Operating Expenses...........................................................   0.00%
                                                                                            -------
                                                                                            -------
</TABLE>
    
 
- ------------------
   
*   The Annual Fund Operating Expenses are estimated for the Fund's initial
    fiscal period. "Other expenses" (including transfer agency, legal and audit
    fees and other operating expenses) initially will be borne by AIM and the
    Sub-adviser. Subject to receipt of an order of the SEC pursuant to a pending
    exemptive application, such expenses may be borne by AIM, the Sub-adviser
    and the Underlying Theme Funds or the Underlying Theme Funds alone. See
    "Other Information -- Special Servicing Agreement." Investors purchasing
    Advisor Class shares through financial planners, trust companies, bank trust
    departments or registered investment advisers, or under a "wrap fee"
    program, will be subject to additional fees charged by such entities or by
    the sponsors of such programs. Where any account advised by one of the
    companies composing or affiliated with AMVESCAP PLC invests in Advisor Class
    shares of the Fund, such account shall not be subject to duplicative
    advisory fees.
    
 
   
In addition to the Annual Fund Operating Expenses shown above, the Fund, as a
shareholder in the Underlying Theme Funds, indirectly bears its pro rata share
of the fees and expenses incurred by the Underlying Theme Funds. As a result,
the investment returns of the Fund reflect the expenses of the Underlying Theme
Funds in which it holds shares. Because the Fund invests only in Advisor Class
shares of the Underlying Theme Funds it pays no sales charge or 12b-1
distribution or service fees in connection with these investments. The following
table shows the expense ratios applicable to Advisor Class shares of the
Underlying Theme Funds for their fiscal years ended October 31, 1997.
    
 
   
<TABLE>
<CAPTION>
                                                              EXPENSE RATIO OF
                                                               ADVISOR CLASS
UNDERLYING THEME FUND                                            SHARES (1)
- ------------------------------------------------------------  ----------------
<S>                                                           <C>
Consumer Products and Services Fund.........................       1.34%
Financial Services Fund.....................................       1.50%
Health Care Fund............................................       1.27%
Infrastructure Fund.........................................       1.50%
Resources Fund..............................................       1.50%
Telecommunications Fund.....................................       1.29%
</TABLE>
    
 
- ------------------
   
(1) AIM has undertaken to limit each Underlying Theme Fund's expenses (exclusive
    of brokerage commissions, taxes, interest and extraordinary expenses) to a
    maximum level of 1.50% of the average daily net assets of such fund's
    Advisor Class shares.
    
 
                               Prospectus Page 4
<PAGE>
   
The following table shows the aggregate expense ratio of the Fund based on a
weighted average of the expense ratios of Advisor Class shares of the Underlying
Theme Funds in which the Fund was invested as of October 31, 1997, plus the
Fund's total operating expenses. (1)
    
 
   
<TABLE>
<CAPTION>
AIM GLOBAL TRENDS FUND
(INCLUDING THE FUND'S INDIRECT PRO RATA SHARE OF THE     ESTIMATED AGGREGATE
EXPENSES OF THE UNDERLYING THEME FUNDS)                   EXPENSE RATIO (2)
- -------------------------------------------------------  -------------------
<S>                                                      <C>
Advisor Class..........................................         1.35%
</TABLE>
    
 
- ------------------
   
(1) These percentages do not necessarily reflect the current allocation of the
    Fund's assets to the Underlying Theme Funds or the allocation of the Fund's
    assets on any other date.
    
 
   
(2) Because of AIM's undertaking to limit each Underlying Theme Fund's expenses
    as described above, the Fund's aggregate expense ratio will not exceed 1.50%
    for Advisor Class shares.
    
 
   
HYPOTHETICAL EXAMPLE OF EFFECT OF EXPENSES (3):
    
 
   
An investor would have directly or indirectly paid the following expenses of the
Fund based upon the Fund's estimated aggregate expense ratio at the end of the
periods shown on a $1,000 investment in the Fund, assuming a 5% annual return:
    
 
   
<TABLE>
<CAPTION>
                                                    ONE YEAR   THREE YEARS
                                                    --------   -----------
<S>                                                 <C>        <C>
Advisor Class shares..............................    $14          $43
</TABLE>
    
 
- ------------------
   
(3) THE "HYPOTHETICAL EXAMPLE" IS NOT A REPRESENTATION OF FUTURE EXPENSES. THE
    FUND'S ACTUAL DIRECT AND INDIRECT EXPENSES, AND AN INVESTOR'S DIRECT AND
    INDIRECT EXPENSES, MAY BE MORE OR LESS THAN THOSE SHOWN. The example assumes
    payment by the Fund of operating expenses at the level set forth under
    "Annual Fund Operating Expenses" above and of its indirect pro rata share of
    the Advisor Class share expenses of the Underlying Theme Funds, as described
    above.
    
 
   
The foregoing table is intended to assist investors in understanding the various
costs and expenses associated with investing in the Fund.
    
 
   
The table and the assumption in the Hypothetical Example of a 5% annual return
are required by regulation of the SEC applicable to all mutual funds. The 5%
annual return is not a prediction of and does not represent the Fund's or any
Underlying Theme Fund's projected or actual performance.
    
 
                               Prospectus Page 5
<PAGE>
                             AIM GLOBAL TRENDS FUND
 
                              FINANCIAL HIGHLIGHTS
 
- --------------------------------------------------------------------------------
 
   
The table below provides condensed financial information concerning income and
capital changes for one Advisor Class share of the Fund. This information is
supplemented by the financial statements and accompanying notes appearing in the
Statement of Additional Information.
    
 
   
                             AIM GLOBAL TRENDS FUND
                    (FORMERLY GT GLOBAL NEW DIMENSION FUND)
    
 
                                 [TO BE ADDED]
 
                            ------------------------
 
   
PERFORMANCE. All advertisements of the Fund will disclose the maximum sales
charge (including deferred sales charges) imposed on purchases of the Fund's
shares. If any advertised performance data does not reflect the maximum sales
charge (if any), such advertisement will disclose that the sales charge has not
been deducted in computing the performance data, and that, if reflected, the
maximum sales charge would reduce the performance quoted. See the Statement of
Additional Information for further details concerning performance comparisons
used in advertisements by the Fund. Further information regarding the Fund's
performance is contained in the Fund's annual report to shareholders, which is
available upon request and without charge.
    
 
   
The Fund's total return is calculated in accordance with a standardized formula
for computation of annualized total return.
    
 
   
The Fund's total return shows its overall change in value, including changes in
share price and assuming all the Fund's dividends and capital gain distributions
are reinvested. A cumulative total return reflects the Fund's performance over a
stated period of time. An average annual total return reflects the hypothetical
compounded annual rate of return that would have produced the same cumulative
total return if the Fund's performance had been constant over the entire period.
BECAUSE AVERAGE ANNUAL RETURNS TEND TO EVEN OUT VARIATIONS IN THE FUND'S RETURN,
INVESTORS SHOULD RECOGNIZE THAT SUCH RETURNS ARE NOT THE SAME AS ACTUAL
YEAR-BY-YEAR RESULTS. To illustrate the components of overall performance, the
Fund may separate its cumulative and average annual returns into income results
and capital gains or losses.
    
 
   
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 Fund. Such practices will
have the effect of increasing the Fund's total return. The performance of the
Fund will vary from time to time and past results are not necessarily
representative of future results. The Fund's performance is a function of its
portfolio management in selecting the type and quality of portfolio securities
and is affected by operating expenses of the Fund as well as by general market
conditions.
    
 
UNDERLYING THEME FUND PERFORMANCE. The Fund has a limited history and therefore
a limited performance record. Thus, the performance shown below is not the
performance of the Fund, but instead reflects the performance of the Underlying
Theme Funds. The following table shows the average annual total returns of Class
A and Class B shares of each Underlying Theme Fund for the most recent one- and
five-year periods (as applicable) and for the life of the Underlying Theme
Funds. The performance information reflects deduction of the maximum applicable
sales charges. Returns would be higher if these charges were not reflected. The
 
                               Prospectus Page 6
<PAGE>
                             AIM GLOBAL TRENDS FUND
Fund invests in the Advisor Class shares of the Underlying Theme Funds, which
are not subject to sales charges and distribution and service fees. However,
Class A and Class B shares of the Fund are subject to their own sales charges
and distribution and service fees.
 
<TABLE>
<CAPTION>
                                                                     AVERAGE ANNUAL TOTAL RETURN THROUGH 4/30/98
                                                         --------------------------------------------------------------------
                                                                ONE YEAR               FIVE YEARS            LIFE OF FUND
                                                         ----------------------  ----------------------  --------------------
UNDERLYING THEME FUND                                     CLASS A     CLASS B     CLASS A     CLASS B     CLASS A    CLASS B
- -------------------------------------------------------  ----------  ----------  ----------  ----------  ---------  ---------
<S>                                                      <C>         <C>         <C>         <C>         <C>        <C>
Consumer Products and Services Fund....................      45.69%      47.14%     n/a         n/a      30.87%(1)  31.66%(1)
Financial Services Fund................................      33.53%      34.54%     n/a         n/a      17.52%(2)  17.94%(2)
Health Care Fund.......................................      28.90%      29.62%      17.91%      18.25%  14.59%(3)  18.50%(4)
Infrastructure Fund....................................       8.37%       8.14%     n/a         n/a       9.93%(5)  10.17%(5)
Resources Fund.........................................       7.91%       7.80%     n/a         n/a       9.00%(6)   9.24%(6)
Telecommunications Fund................................      36.09%      37.17%      14.34%      14.64%  13.67%(7)  14.85%(8)
</TABLE>
 
Past performance of the Underlying Theme Funds is not a guarantee of future
results for either the Underlying Theme Funds or the Fund. Further information
about each Underlying Theme Fund's performance is contained in its Annual Report
to Shareholders, which may be obtained without charge by calling (800) 824-1580
or contacting your financial adviser.
- ------------------
(1) The Consumer Products and Services Fund commenced operations on December 30,
    1994.
 
(2) The Financial Services Fund commenced operations on May 31, 1994.
 
(3) Class A shares of the Health Care Fund were initially offered on August 7,
    1989.
 
(4) Class B shares of the Health Care Fund were initially offered on April 1,
    1993.
 
(5) The Infrastructure Fund commenced operations on May 31, 1994.
 
(6) The Resources Fund commenced operations on May 31, 1994.
 
(7) Class A Shares of the Telecommunications Fund were initially offered on
    January 27, 1992.
 
(8) Class B shares of the Telecommunications Fund were initially offered on
    April 1, 1993.
 
- --------------------------------------------------------------------------------
 
                            INVESTMENT OBJECTIVE AND
                                    POLICIES
 
- --------------------------------------------------------------------------------
 
The Fund seeks long-term growth of capital. Unlike a typical mutual fund, which
invests directly in securities, the Fund invests, under normal circumstances,
substantially all of its assets in the following Underlying Theme Funds:
 
    / / Consumer Products and Services Fund
 
    / / Financial Services Fund
 
    / / Health Care Fund
 
    / / Infrastructure Fund
 
    / / Resources Fund
 
    / / Telecommunications Fund
 
The Sub-adviser exercises no discretion in investing the Fund's assets. Rather,
the Sub-adviser periodically determines the allocation of the Fund's assets to
the Underlying Theme Funds according to the industry weightings of the companies
composing the Morgan Stanley Capital International All Country (AC) World Index
("MSCI"). (The MSCI is a broad unmanaged index of global stock prices,
comprising approximately 2,483 different issuers, located in 48 countries
including both developed and developing countries as of April 30, 1998. Each of
the 2,483 stocks is placed into one of 38 MSCI industry sectors.) The Sub-
adviser assesses which of the Underlying Theme Funds can invest, as part of its
primary focus, in each of these industries. For example, industries in the MSCI
in which the Financial Services Fund invests include the Banking, Financial
Services, Insurance and Real Estate industries. The percentage that those
industries compose in the MSCI is the initial weighting assigned to the
Financial Services Fund. Where two or more Underlying Theme Funds can invest in
an industry, the weighting of that industry in the MSCI is split equally among
each qualifying Underlying Theme Fund. See the Appendix for the allocation of
the 38 industries to the Underlying Theme Funds. Of course, the Underlying Theme
Funds do not invest necessarily in the same industries or the same companies
that compose the MSCI. Because the percentage weight assigned to each industry
in the MSCI changes over time and because the percentage of the Fund's assets
invested in each Underlying Theme Fund will change over time, the Sub-adviser
will rebalance
 
                               Prospectus Page 7
<PAGE>
                             AIM GLOBAL TRENDS FUND
the Fund's assets among the Underlying Theme Funds at least semi-annually. In
addition, the Sub-adviser will invest incoming money in, and satisfy redemption
requests by redeeming shares of, each Underlying Theme Fund according to the
MSCI weighting as of the last business day of the preceding month.
 
As of April 30, 1998, the allocation of the Fund's assets to the Underlying
Theme Funds was as follows:
 
<TABLE>
<S>                                        <C>
Consumer Products and Services Fund......      30.8%
Financial Services Fund..................      21.5%
Health Care Fund.........................      10.4%
Infrastructure Fund......................      16.4%
Resources Fund...........................      11.1%
Telecommunications Fund..................       9.7%
</TABLE>
 
These percentages do not include cash or money market instruments held by the
Fund and do not necessarily reflect the current allocation of the Fund's assets
to the Underlying Theme Funds or the allocation of the Fund's assets on any
other date.
 
The Fund is a more diversified investment than any single Underlying Theme Fund.
However, because the Underlying Theme Funds are actively managed without any
attempt to reflect the country, industry or company weightings of the MSCI, the
Underlying Theme Funds will perform differently than the corresponding industry
components of the MSCI, and the Underlying Theme Funds will perform differently
than the overall MSCI. While the Fund does not therefore represent the
performance of the MSCI, it does represent a globally diversified portfolio,
with allocations among developed and emerging countries, industries and
companies intended to achieve long-term growth of capital.
 
The Fund is designed to meet the needs of investors who seek professional money
management services and who appreciate the advantages of diversification. The
Fund by itself should not be considered a complete investment program. As a
recently organized entity, the Fund has a limited operating history.
 
OTHER INFORMATION. The investment objective of the Fund may not be changed
without the approval of a majority of its outstanding voting securities. As
defined in the Investment Company Act of 1940, as amended ("1940 Act"), and as
used in this Prospectus, a "majority of the Fund's outstanding voting
securities" means the lesser of (i) 67% of the Fund's shares represented at a
meeting at which more than 50% of the outstanding shares are represented, or
(ii) more than 50% of the outstanding shares. In addition, the Fund has adopted
certain investment limitations as fundamental policies that also may not be
changed without shareholder approval. See "Investment Limitations" in the
Statement of Additional Information. Unless specifically noted, the Fund's
investment policies described in this Prospectus, and in the Statement of
Additional Information, are not fundamental policies and may be changed by the
Trust's Board of Trustees without shareholder approval.
 
- --------------------------------------------------------------------------------
 
                               DESCRIPTION OF THE
                             UNDERLYING THEME FUNDS
 
- --------------------------------------------------------------------------------
 
   
The following descriptions summarize the investment objectives and policies of
the Underlying Theme Funds. There is no assurance that any Underlying Theme Fund
will achieve its investment objective. The Statement of Additional Information
includes more information about the investment policies of the Underlying Theme
Funds. Investors desiring more information on an Underlying Theme Fund should
call (800) 347-4246 or contact their financial adviser for the Underlying Theme
Fund's prospectus.
    
 
CONSUMER PRODUCTS AND SERVICES FUND. The Consumer Products and Services Fund's
investment objective is long-term capital growth. It seeks its objective by
investing all of its investable assets in the Consumer Products and Services
Portfolio, that, in turn, invests primarily in equity securities of companies
throughout the world that manufacture, market, retail or distribute consumer
products and services. The Consumer Products and Services Portfolio's investment
objective is identical to that of the Consumer Products and Services Fund.
 
At least 65% of the Consumer Products and Services Portfolio's total assets
normally will be invested in common and preferred stocks and warrants to acquire
such securities issued by consumer products and services companies. A "consumer
products or
 
                               Prospectus Page 8
<PAGE>
                             AIM GLOBAL TRENDS FUND
services" company is an entity in which (i) at least 50% of either the revenues
or earnings was derived from activities relating to consumer products or
services, or (ii) at least 50% of the assets was devoted to such activities,
based on the company's most recent fiscal year. The remainder of the Consumer
Products and Services Portfolio's assets may be invested in debt securities
issued by consumer products or services companies and/or equity and debt
securities of companies outside the consumer products or services industries,
which, in the opinion of the Sub-adviser, stand to benefit from developments in
such industries.
 
FINANCIAL SERVICES FUND. The Financial Services Fund's investment objective is
long-term capital growth. It seeks its objective by investing all of its
investable assets in the Financial Services Portfolio, that, in turn, invests
primarily in equity securities of companies throughout the world that operate in
the financial services industries. The Financial Services Portfolio's investment
objective is identical to that of the Financial Services Fund.
 
At least 65% of the Financial Services Portfolio's total assets normally will be
invested in common and preferred stocks and warrants to acquire such securities
issued by financial services companies. A "financial services" company is an
entity in which (i) at least 50% of either the revenues or earnings was derived
from financial services activities, or (ii) at least 50% of the assets was
devoted to such activities, based on the company's most recent fiscal year. The
remainder of the Financial Services Portfolio's assets may be invested in debt
securities issued by financial services companies and/or equity and debt
securities of companies outside of the financial services industries, which, in
the opinion of the Sub-adviser, stand to benefit from developments in the
financial services industries.
 
HEALTH CARE FUND. The Health Care Fund's investment objective is long-term
capital appreciation. It seeks its objective by investing primarily in equity
securities of health care companies throughout the world.
 
At least 65% of the Health Care Fund's total assets normally will be invested in
common and preferred stocks and warrants to acquire such securities issued by
health care companies. A "health care" company is an entity in which (i) at
least 50% of either the revenues or earnings was derived from health care
activities, or (ii) at least 50% of the assets was devoted to such activities,
based on the company's most recent fiscal year. The remainder of the Health Care
Fund's assets may be invested in debt securities issued by health care companies
and/or equity and debt securities of companies outside of the health care
industry, which, in the opinion of the Sub-adviser, stand to benefit from
developments in the health care industries.
 
INFRASTRUCTURE FUND. The Infrastructure Fund's investment objective is long-term
capital growth. It seeks its objective by investing all of its investable assets
in the Infrastructure Portfolio, that, in turn, invests primarily in equity
securities of companies throughout the world that design, develop or provide
products and services significant to a country's infrastructure. The
Infrastructure Portfolio's investment objective is identical to that of the
Infrastructure Fund.
 
At least 65% of the Infrastructure Portfolio's total assets normally will be
invested in common and preferred stocks and warrants to acquire such securities
issued by infrastructure companies. An "infrastructure" company is an entity in
which (i) at least 50% of either the revenues or earnings was derived from
infrastructure activities, or (ii) at least 50% of the assets was devoted to
such activities, based on the company's most recent fiscal year. The remainder
of the Infrastructure Portfolio's assets may be invested in debt securities
issued by infrastructure companies and/or equity and debt securities of
companies outside of the infrastructure industries, which, in the opinion of the
Sub-adviser, stand to benefit from developments in the infrastructure
industries.
 
RESOURCES FUND. The Resources Fund's investment objective is long-term capital
growth. It seeks its objective by investing all of its investable assets in the
Resources Portfolio, that, in turn, invests primarily in equity securities of
companies throughout the world that own, explore or develop natural resources
and other basic commodities, or supply goods and services to such companies. The
Resources Portfolio's investment objective is identical to that of the Resources
Fund.
 
At least 65% of the Resources Portfolio's total assets will normally be invested
in common and preferred stocks and warrants to acquire such securities issued by
natural resource companies. A "natural resource" company is an entity in which
(i) at least 50% of either the revenues or earnings was derived from natural
resource activities, or (ii) at least 50% of the assets was devoted to such
activities, based upon the company's most recent fiscal year. The remainder of
the Resources Portfolio's assets may be invested in debt securities issued by
natural resource companies and/or equity and debt securities of companies
outside of the natural
 
                               Prospectus Page 9
<PAGE>
                             AIM GLOBAL TRENDS FUND
resource industries, which, in the opinion of the Sub-adviser, stand to benefit
from developments in the natural resource industries.
 
TELECOMMUNICATIONS FUND. The Telecommunications Fund's investment objective is
long-term growth of capital. It seeks its objective by investing primarily in
equity securities of companies throughout the world engaged in the development,
manufacture or sale of telecommunications services or equipment.
 
At least 65% of the Telecommunications Fund's total assets normally will be
invested in common and preferred stocks and warrants to acquire such securities
issued by telecommunications companies. A "telecommunications" company is an
entity in which (i) at least 50% of either its revenues or earnings was derived
from telecommunications activities, or (ii) at least 50% of its assets was
devoted to telecommunications activities, based on the company's most recent
fiscal year. The remainder of the assets of the Telecommunications Fund may be
invested in debt securities issued by telecommunications companies and/or equity
and debt securities of companies outside of the telecommunications industry
which, in the opinion of the Sub-adviser, stand to benefit from developments in
the telecommunications industries.
 
- --------------------------------------------------------------------------------
 
                                RISK FACTORS AND
                             SPECIAL CONSIDERATIONS
 
- --------------------------------------------------------------------------------
 
INVESTING IN THE UNDERLYING THEME FUNDS. The investments of the Fund are
concentrated in the Underlying Theme Funds, so the Fund's investment performance
is directly related to the investment performance of the Underlying Theme Funds.
The ability of the Fund to meet its investment objective is directly related to
the allocation among those Underlying Theme Funds as well as the ability of the
Underlying Theme Funds to meet their objectives. There is no assurance that the
investment objective of the Fund or any Underlying Theme Fund will be achieved.
The value of the Underlying Theme Funds' domestic and foreign investments varies
in response to many factors. The value of equity securities held by an
Underlying Theme Fund will fluctuate in response to general market and economic
developments, as well as developments affecting the particular issuers of such
securities. In addition, the value of debt securities held by an Underlying
Theme Fund generally will fluctuate with changes in the perceived
creditworthiness of the issuers of such securities and interest rates.
 
Because each Underlying Theme Fund focuses its investments on particular
industries, an investment in each may be more volatile than that of other
investment companies that do not concentrate their investments in such a manner.
The value of the shares of each Underlying Theme Fund will be especially
susceptible to factors affecting the industries in which it focuses. In
particular, each of the industries is subject to governmental regulation that
may have a material effect on the products and services offered by companies in
these industries.
 
UNDERLYING THEME FUNDS' INVESTMENT ALLOCATION. The Sub-adviser allocates each
Underlying Theme Fund's (or its corresponding Portfolio's) assets among
securities of countries and in currency denominations where opportunities for
meeting each Underlying Theme Fund's investment objective are expected to be the
most attractive. Each Underlying Theme Fund may invest substantially in
securities denominated in foreign currencies or in multinational currency units
(such as Euros). Under normal conditions, each Underlying Theme Fund invests in
the securities of issuers located in at least three countries, including the
United States; investments in securities of issuers in any one country, other
than the United States, will represent no more than 40% of the Financial
Services Portfolio's and the Telecommunication Fund's total assets, and no more
than 50% of the Infrastructure Portfolio's, the Resources Portfolio's, the
Health Care Fund's and the Consumer Products and Services Portfolio's total
assets.
 
In analyzing specific companies for possible investment the Sub-adviser, on
behalf of the Underlying Theme Funds, ordinarily looks for several of the
following characteristics: above-average per share earnings growth; high return
on invested capital; a healthy balance sheet; sound financial and accounting
policies and overall financial strength; strong competitive advantages;
effective research
 
                               Prospectus Page 10
<PAGE>
                             AIM GLOBAL TRENDS FUND
and product development and marketing; development of new technologies;
efficient service; pricing flexibility; strong management; and general operating
characteristics that will enable the companies to compete successfully in their
respective markets. In assessing companies for the Resources Portfolio, the
Sub-adviser will also evaluate, among other factors, their capabilities for
expanded exploration and production, superior exploration programs and
production techniques and facilities, current inventories, expected production
and demand levels and the potential to accumulate new resources.
 
FOREIGN INVESTMENTS. The Underlying Theme Funds' investments in foreign
securities may involve risks in addition to those of U.S. investments, including
increased political and economic risk, as well as exposure to currency
fluctuations. By investing in foreign securities, the Underlying Theme Funds
also have increased economic and political risks as they are exposed to events
and factors in the various world markets. This is especially true of an
Underlying Theme Fund that invests in emerging markets. Many investments in
emerging markets are considered speculative and therefore may offer greater
return potential, but have significantly greater risk. Also, to the extent that
an Underlying Theme Fund's investments are denominated in foreign currencies,
changes in the value of foreign currencies can significantly affect the Fund's
share price.
 
LOWER QUALITY DEBT SECURITIES. The Fund may invest in an Underlying Theme Fund
that invests in high yield, high risk securities, commonly known as "junk
bonds." As a result, the Fund may be subject to some of the risks resulting from
high yield investing. The Fund also may invest in Underlying Theme Funds that
invest in medium grade bonds. Lower quality debt instruments generally offer a
higher current yield than that available from higher grade issues, but typically
involve greater risk. Lower rated and comparable unrated securities are
especially subject to adverse changes in general economic conditions, to changes
in the financial condition of their issuers, and to price fluctuation in
response to changes in interest rates. During periods of economic downturn or
rising interest rates, issuers of these instruments may experience financial
stress that could adversely affect their ability to make payments of principal
and interest and increase the possibility of default.
 
ILLIQUID SECURITIES. The Underlying Theme Funds may invest in securities for
which no readily available market exists, so-called "illiquid securities."
Illiquid securities may be more difficult to value than liquid securities and
the sale of illiquid securities generally will require more time and result in
higher brokerage charges or dealer discounts and other selling expenses than the
sale of liquid securities. Moreover, illiquid securities often sell at prices
lower than similar securities that are liquid.
 
OPTIONS, FUTURES AND FORWARD CURRENCY TRANSACTIONS. Each Underlying Theme Fund
is authorized to enter into options, futures and forward currency transactions,
although they might not enter into such transactions. Options, futures and
forward currency transactions involve certain risks, which include: (1)
dependence on the Sub-adviser's ability to predict movements in the prices of
individual securities, fluctuations in the general securities markets or in the
appropriate market sector and movements in interest rates and currency markets;
(2) imperfect correlation, or even no correlation, between movements in the
price of options, forward contracts, futures contracts or options thereon and
movements in the price of the currency or security hedged or used for cover; (3)
the fact that skills and techniques needed to trade options, futures contracts
and options thereon or to use forward currency contracts are different from
those needed to select the securities in which an Underlying Theme Fund invests;
(4) lack of assurance that a liquid secondary market will exist for any
particular option, futures contract or option thereon at any particular time;
(5) the possible loss of principal under certain conditions; and (6) the
possible inability of an Underlying Theme Fund to purchase or sell a portfolio
security at a time when it would otherwise be favorable for it to do so, or the
possible need for an Underlying Theme Fund to sell a security at a
disadvantageous time, due to the need for the Underlying Theme Fund to maintain
"cover" or to set aside securities in connection with hedging transactions.
 
INVESTING IN SMALLER COMPANIES. Each Underlying Theme Fund may invest in smaller
companies that may present greater opportunities for capital appreciation, but
may also involve greater risks than large, established issuers. Such smaller
companies may have limited resources, and their securities may trade less
frequently and in more limited volume than the securities of larger, more
established companies. As a result, the prices of the securities of such smaller
companies may fluctuate to a greater degree than the prices of the securities of
other issuers.
 
                               Prospectus Page 11
<PAGE>
                             AIM GLOBAL TRENDS FUND
 
OTHER INVESTMENT PRACTICES OF THE UNDERLYING THEME FUNDS. In addition to the
investment practices described in this Prospectus, the Underlying Theme Funds
may engage in certain other investment practices, including lending their
portfolio securities; purchasing securities on a when-issued or delayed delivery
basis; entering into repurchase or reverse repurchase agreements; and borrowing
money. Further information on the investment policies, practices and risks of
the Underlying Theme Funds can be found in the Statement of Additional
Information as well as the Underlying Theme Funds' prospectus and statement of
additional information.
 
PURCHASES AND REDEMPTIONS. From time to time, the Underlying Theme Funds may
experience relatively large purchases or redemptions due to rebalancing of the
Fund by the Sub-adviser. This may have a material effect on the Underlying Theme
Funds, because Underlying Theme Funds that experience redemptions as a result of
the rebalancing may have to sell portfolio securities and because Underlying
Theme Funds that receive additional cash will have to invest it. While it is
impossible to predict the overall impact of these transactions over time, there
could be adverse effects on portfolio management to the extent that Underlying
Theme Funds may be required to sell securities at times when they would not
otherwise do so, or receive cash that cannot be invested in an expeditious
manner. There may be tax consequences associated with purchases and sales of
securities, and such sales also may increase transaction costs.
 
MASTER-FEEDER STRUCTURE OF CERTAIN UNDERLYING THEME FUNDS. The Financial
Services Fund, Infrastructure Fund, Resources Fund and Consumer Products and
Services Fund, unlike mutual funds that directly acquire and manage their own
portfolios of securities, each seeks its investment objective by investing all
of its investable assets in the Financial Services Portfolio, Infrastructure
Portfolio, Resources Portfolio and Consumer Products and Services Portfolio
(each a "Portfolio"), respectively. Each Portfolio is a separate investment
company. Because each such Underlying Theme Fund will invest only in its
corresponding Portfolio, that Underlying Theme Fund's shareholders will acquire
only an indirect interest in the investments of that Portfolio.
 
TEMPORARY DEFENSIVE STRATEGIES. The Underlying Theme Funds retain the
flexibility to respond promptly to changes in market and economic conditions.
Accordingly, in the interest of preserving shareholders' capital the Sub-adviser
may employ a temporary defensive investment strategy if it determines such a
strategy to be warranted due to market, economic or political conditions. Under
a defensive strategy, the Underlying Theme Funds may invest up to 100% of their
total assets in cash and/or high quality debt securities and money market
instruments. To the extent an Underlying Theme Fund adopts a temporary defensive
posture, it will not be invested so as to achieve directly its investment
objective.
 
In addition, pending investment of proceeds from new sales of the shares or to
meet its ordinary daily cash needs, the Underlying Theme Funds may hold cash
and/or may invest in high quality debt instruments and money market instruments.
The Fund may hold cash and/or may invest in money market instruments under
similar circumstances. Money market instruments in which the Underlying Theme
Funds and the Fund may invest include, but are not limited to, United States
government securities; high-grade commercial paper; bank certificates of
deposit; bankers' acceptances and repurchase agreements related to any of the
foregoing. "High-grade commercial paper" refers to commercial paper rated A-1 by
Standard & Poor's, a division of The McGraw-Hill Companies, Inc., or P-1 by
Moody's Investors Service, Inc. or, if not rated, determined by the Sub-adviser
to be of comparable quality.
 
PORTFOLIO TURNOVER. The Fund's portfolio turnover rate is expected to be low and
is not anticipated to exceed 20% annually. The portfolio turnover rates of the
Underlying Theme Funds and their corresponding Portfolios have ranged from 35%
to 392% during their most recent fiscal years. There is no assurance that the
turnover rates of the Underlying Theme Funds and their corresponding Portfolios
will remain within this range during subsequent fiscal years. Higher turnover
rates may result in higher expenses being incurred by the Underlying Theme
Funds.
 
AFFILIATED PERSONS. The officers and trustees of the Trust currently serve as
officers and trustees of the Underlying Theme Funds. AIM and the Sub-adviser
also serves as investment adviser and/or administrator and sub-adviser and/or
sub-administrator, respectively, to the Underlying Theme Funds. Therefore,
conflicts may arise as these persons fulfill their fiduciary responsibilities to
the Fund and the Underlying Theme Funds.
 
                               Prospectus Page 12
<PAGE>
                             AIM GLOBAL TRENDS FUND
 
                                   MANAGEMENT
 
- --------------------------------------------------------------------------------
 
   
The Trust's Board of Trustees has overall responsibility for the operation of
the Fund. The Trust's Board of Trustees has approved all significant agreements
between the Trust on the one side and persons or companies furnishing services
to the Fund on the other, including the investment management and administration
agreement with AIM, the investment sub-advisory and sub-administration agreement
between AIM and the Sub-adviser, the agreements with AIM Distributors regarding
distribution of the Fund's shares, the custody agreement and the transfer agency
agreement. The day-to-day operations of the Fund are delegated to the officers
of the Trust, subject always to the objective and policies of the Fund and to
the general supervision of the Trust's Board of Trustees. See "Trustees and
Executive Officers" in the Statement of Additional Information for information
on the Trustees.
    
 
   
INVESTMENT MANAGEMENT AND ADMINISTRATION. Subject to the supervision and
direction of the Trust's Board of Trustees, AIM and the Sub-adviser will ensure
that the Fund's assets are invested in the Underlying Theme Funds according to
the formula and pre-determined percentages described in the "Investment
Objective and Policies" section of this Prospectus. AIM and the Sub-adviser will
determine how the Fund's assets will be invested in short-term investments and
place all purchase and sale orders for such instruments and for the Underlying
Theme Funds. AIM and the Sub-adviser provide the following administration
services to the Fund: furnishing corporate officers and clerical staff;
providing office space, services and equipment; and supervising all matters
relating to the Fund's operation. The Sub-adviser also serves as the Fund's
pricing and accounting agent. Finally, AIM and the Sub-adviser will initially
assume all costs of the Fund's operation, except for service and distribution
fees described below and non-recurring and extraordinary expenses. The Fund, as
a shareholder in the Underlying Theme Funds, indirectly will bear its
proportionate share of any investment management fees and other expenses paid by
the Underlying Theme Funds. The investment management and administration fees
paid by the Underlying Theme Funds are higher than those paid by most mutual
funds.
    
 
   
AIM, 11 Greenway Plaza, Suite 100, Houston, Texas 77046, serves as the
investment manager to the Fund pursuant to a master investment management and
administration agreement, dated as of May 29, 1998 (the "Advisory Agreement").
AIM was organized in 1976 and, together with its subsidiaries, manages or
advises approximately 90 investment company portfolios encompassing a broad
range of investment objectives. The Sub-adviser, 50 California Street, 27th
Floor, San Francisco, California 94111, and 1166 Avenue of the Americas, New
York, New York 10036, serves as the sub-adviser to the Fund pursuant to an
investment sub-advisory and sub-administration agreement dated as of May 29,
1998. Prior to May 29, 1998, the Sub-adviser was known as Chancellor LGT Asset
Management, Inc. On May 29, 1998, Liechtenstein Global Trust AG ("LGT"), the
former indirect parent organization of the Sub-adviser, consummated a purchase
agreement with AMVESCAP PLC pursuant to which AMVESCAP PLC acquired LGT's Asset
Management Division, which included the Sub-adviser and certain other
affiliates. As a result of this transaction, the Sub-adviser is now an indirect
wholly owned subsidiary of AMVESCAP PLC. Prior to the sale, the Sub-adviser and
its worldwide asset management affiliates provided investment management and/or
administrative services to institutional, corporate and individual clients
around the world since 1969.
    
 
AIM and the Sub-adviser and their worldwide asset management affiliates provide
investment management and/or administrative services to institutional, corporate
and individual clients around the world. AIM and the Sub-adviser are both
indirect wholly owned subsidiaries of AMVESCAP PLC. AMVESCAP PLC and its
subsidiaries are an independent investment management group that has a
significant presence in the institutional and retail segment of the investment
management industry in North America and Europe, and a growing presence in Asia.
 
   
In addition to the investment resources of their Houston, San Francisco and New
York offices, AIM and the Sub-adviser draw upon the expertise, personnel, data
and systems of other offices in Atlanta, Boston, Dallas, Denver, Louisville,
Miami,
    
 
                               Prospectus Page 13
<PAGE>
                             AIM GLOBAL TRENDS FUND
Portland (Oregon), Frankfurt, Hong Kong, London, Singapore, Sydney, Tokyo and
Toronto. In managing the Fund, the Sub-adviser employs a team approach, taking
advantage of its investment resources around the world.
 
While the Fund will not be actively managed or have a portfolio manager, the
Underlying Theme Funds are actively managed by teams of investment
professionals. At least semi-annually the Fund will rebalance the Fund's assets
among the Underlying Theme Funds according to the MSCI weighting as of the last
business day of the preceding month.
 
   
DISTRIBUTOR. The Trust has entered into a Master Distribution Agreement, dated
May 29, 1998 (the "Distribution Agreement"), with AIM Distributors, a registered
broker-dealer and a wholly owned subsidiary of AIM, to act as the distributor of
the Advisor Class shares of the Fund. Certain Trustees and officers of the Trust
are affiliated with AIM Distributors.
    
 
   
The Distribution Agreement provides AIM Distributors with the exclusive right to
distribute Advisor Class shares of the Fund directly and through institutions
with whom AIM Distributors has entered into selected dealer agreements.
    
 
- --------------------------------------------------------------------------------
 
                               OTHER INFORMATION
 
- --------------------------------------------------------------------------------
 
   
SPECIAL SERVICING AGREEMENT. Until the Special Servicing Agreement described
below its entered into, AIM and the Sub-adviser will pay all the expenses of the
Fund, excluding service and distribution fees and certain non-recurring and
extraordinary expenses. Expenses initially paid by AIM and the Sub-adviser will
include fees and expenses of the Fund's accounting agent; legal, auditing and
accounting expenses; taxes; fees and expenses of A I M Fund Services, Inc. (the
"Transfer Agent"); fees and expenses of registering or qualifying the Fund's
shares for sale; fees and expenses of Trustees, officers and employees of the
Trust who are not affiliated with AIM or the Sub-adviser; the cost of printing
and distributing reports and notices to existing shareholders; and fees and
expenses incurred in connection with membership in investment company
organizations.
    
 
An exemptive application has been filed with the SEC requesting relief from
certain provisions of the 1940 Act to permit the Fund, AIM, the Sub-adviser, the
Underlying Theme Funds and the Transfer Agent to enter into a Special Servicing
Agreement ("Agreement"). If exemptive relief is obtained, all the Fund's
expenses except for service and distribution fees and certain non-recurring and
extraordinary expenses will be paid for in accordance with the Agreement. Under
the Agreement, to the extent that the aggregate expenses of the Fund are less
than the estimated savings to the Underlying Theme Funds from the operation of
the Fund, each Underlying Theme Fund will bear those expenses in proportion to
the average daily value of its shares owned by the Fund and/or the number of
shareholder accounts at the Fund. The estimated savings are expected to result
from the reduction of the Underlying Theme Funds' shareholder servicing costs
due to the elimination of separate shareholder accounts that either currently
are or have potential to be invested in the Underlying Theme Funds. The
estimated savings produced by the operation of the Fund may offset most, if not
all, the expenses incurred by the Fund other than service and distribution fees.
To the extent that the Fund's expenses exceed the aggregate financial benefits
to the Underlying Theme Funds, AIM and the Sub-adviser will pay that excess.
 
   
ORGANIZATION OF THE TRUST. The Trust was organized as a Delaware business trust
on May 7, 1998. On May 29, 1998, the Trust acquired the assets of and assumed
the liabilities of GT Global Series Trust, a Massachusetts business trust
organized on August 26, 1996. The Trust currently consists of one series. From
time to time, the Trust may establish other series, each holding a distinct
investment portfolio and issuing a distinct series of the Trust's shares of
beneficial interest. Shares of each series are entitled to one vote per share
(with proportional voting for fractional shares) and are transferable.
Shareholders have no preemptive rights. Other than the automatic conversion of
Class B shares to Class A shares, there are no conversion rights.
    
 
                               Prospectus Page 14
<PAGE>
                             AIM GLOBAL TRENDS FUND
 
If any additional series of the Trust are established, on any matter submitted
to a vote of shareholders, shares of each series will be voted by its
shareholders individually when the matter affects the specific interest of that
series only, such as approval of its investment management arrangements. The
shares of the Trust's series would be voted in the aggregate on other matters,
such as the election of Trustees and ratification of the selection by the Board
of Trustees of the Trust's independent accountants.
 
   
Normally there will be no annual meeting of shareholders in any year, except as
required under the 1940 Act. Fund shares do not have cumulative voting rights,
which means that the holders of a majority of the shares voting for the election
of Trustees can elect all the Trustees. A Trustee may be removed at any meeting
of the shareholders of the Trust by a vote of the shareholders owning at least
two-thirds of the outstanding shares. Any Trustee may call a special meeting of
shareholders for any purpose. Furthermore, Trustees shall promptly call a
meeting of shareholders solely for the purpose of removing one or more Trustees
when requested in writing to do so by shareholders holding 10% of the Trust's
outstanding shares.
    
 
Pursuant to the Trust's Declaration of Trust, the Trust may issue an unlimited
number of shares of the Fund. Each share of the Fund represents an interest in
the Fund only, has a par value of $0.01 per share, represents an equal
proportionate interest in the Fund with other Fund shares and is entitled to
such dividends and other distributions out of the income earned and gain
realized on the assets belonging to the Fund as may be declared at the
discretion of the Board of Trustees. Each share of the Fund is equal in
earnings, assets and voting privileges, except that each class normally has
exclusive voting rights with respect to its distribution plan and bears the
expenses, if any, related to the distribution of its shares. Fund shares, when
issued, are fully paid and nonassessable.
 
   
COUNSEL. The law firm of Kirkpatrick & Lockhart LLP, 1800 Massachusetts Avenue,
N.W., Washington, D.C. 20036-1800, acts as counsel to the Trust and to the Fund.
    
 
                               Prospectus Page 15
<PAGE>
                             AIM GLOBAL TRENDS FUND
 
                                    APPENDIX
 
- --------------------------------------------------------------------------------
 
The chart below shows the allocation of the 38 industries comprising the MSCI to
the Underlying Theme Funds as of April 30, 1998.
 
<TABLE>
<CAPTION>
                                            CONSUMER
                                          PRODUCTS AND    FINANCIAL    HEALTH      INFRA-                    TELECOM-
MSCI AC WORLD INDEX INDUSTRY                SERVICES       SERVICES     CARE     STRUCTURE    RESOURCES    MUNICATIONS
- ----------------------------------------  -------------   ----------   -------   ----------   ----------   ------------
 
<S>                                       <C>             <C>          <C>       <C>          <C>          <C>
Aerospace and Military Technology.......                                           X
Appliances & Household Durables.........     X
Automobiles.............................     X
Banking.................................                    X
Beverages & Tobacco.....................     X
Broadcasting & Publishing...............     X                                                                X
Building Materials & Components.........                                           X
Business & Public Services..............     X
Chemicals...............................                                                        X
Construction & Housing..................                                           X
Data Processing & Reproduction..........     X
Electrical Components, Instruments......                                                                      X
Electrical & Electronics................                                           X                          X
Energy Equipment & Service..............                                                        X
Energy Sources..........................                                                        X
Financial Services......................                    X
Food & Household Products...............     X
Forest Products & Paper.................                                                        X
Gold Mines..............................                                                        X
Health & Personal Care..................                                X
Industrial Components...................                                           X
Insurance...............................                    X
Leisure & Tourism.......................     X
Machinery & Engineering.................                                           X
Merchandising...........................     X
Metals - Non Ferrous....................                                                        X
Metals - Steel..........................                                           X
Misc. Materials & Commodities...........                                                        X
Multi-Industry..........................     X
Real Estate.............................                    X
Recreation, Consumer Goods..............     X
Telecommunications......................                                           X                          X
Textiles & Apparel......................     X
Transportation - Airlines...............                                           X
Transportation - Road & Rail............                                           X
Transportation - Shipping...............                                           X
Utilities Electrical & Gas..............                                           X
Wholesale & International Trade.........     X
</TABLE>
 
                               Prospectus Page 16
<PAGE>
                              AIM INVESTOR'S GUIDE
 
   
     The toll-free number for access to routine account information and to
                           shareholder assistance is
             (800) 959-4246 (7:30 a.m. to 6:00 p.m. Central Time).
    
 
                              INVESTOR'S GUIDE TO
                 THE AIM FAMILY OF FUNDS-REGISTERED TRADEMARK-
                            FOR ADVISOR CLASS SHARES
 
- --------------------------------------------------------------------------------
 
INTRODUCTION TO THE AIM FAMILY OF FUNDS
 
   
    THE AIM FAMILY OF FUNDS consists of approximately 50 mutual funds, several
of which offer Advisor Class shares. Only Advisor Class shares are offered
through this Prospectus. Advisor Class shares are available from the following
funds (collectively, the "Advisor Class Funds"):
    
 
   
<TABLE>
<S>                                                 <C>
AIM AMERICA VALUE FUND                              AIM GLOBAL RESOURCES FUND
AIM DEVELOPING MARKETS FUND                         AIM GLOBAL TELECOMMUNICATIONS FUND
AIM DOLLAR FUND                                     AIM GLOBAL TRENDS FUND
AIM EMERGING MARKETS FUND                           AIM INTERNATIONAL GROWTH FUND
AIM EUROPE GROWTH FUND                              AIM JAPAN GROWTH FUND
AIM GLOBAL CONSUMER PRODUCTS AND SERVICES FUND      AIM LATIN AMERICAN GROWTH FUND
AIM GLOBAL FINANCIAL SERVICES FUND                  AIM MID CAP GROWTH FUND
AIM GLOBAL GOVERNMENT INCOME FUND                   AIM NEW PACIFIC GROWTH FUND
AIM GLOBAL GROWTH & INCOME FUND                     AIM SMALL CAP EQUITY FUND
AIM GLOBAL HEALTH CARE FUND                         AIM STRATEGIC INCOME FUND
AIM GLOBAL HIGH INCOME FUND                         AIM WORLDWIDE GROWTH FUND
AIM GLOBAL INFRASTRUCTURE FUND
</TABLE>
    
 
    IT IS IMPORTANT FOR SHAREHOLDERS CONSIDERING AN EXCHANGE TO CAREFULLY REVIEW
THE PROSPECTUS OF THE FUND WHOSE SHARES WILL BE ACQUIRED IN AN EXCHANGE. ADVISOR
CLASS SHARES OF A FUND MAY BE EXCHANGED ONLY FOR ADVISOR CLASS SHARES OF ANOTHER
FUND. THIS PROSPECTUS DOES NOT CONSTITUTE AN OFFER TO SELL SHARES OF ANY FUND
OTHER THAN THE FUND(S) NAMED ON THE COVER PAGE OF THIS PROSPECTUS.
- --------------------------------------------------------------------------------
 
HOW TO PURCHASE SHARES
 
   
    Shares offered by this Prospectus are available for purchase only by certain
investors and are offered at net asset value without the imposition of a
front-end or contingent deferred sales charge or Rule 12b-1 fees.
    
 
   
    HOW TO OPEN AN ACCOUNT.  Advisor Class shares are available through
Financial Advisers (as defined herein) who have entered into agreements with
A I M Distributors, Inc. ("AIM Distributors"). In order to purchase Advisor
Class shares of any Advisor Class Fund, the Financial Adviser, on behalf of the
investor, must submit a fully completed new Account Application form directly to
A I M Fund Services, Inc. ("AFS" or the "Transfer Agent"). The Transfer Agent
will not accept new Account Application forms submitted directly by investors.
    
 
   
    Accounts submitted without a correct, certified taxpayer identification
number or, alternatively, a completed Internal Revenue Service ("IRS") Form W-8
(for non-resident aliens) or Form W-9 (certifying exempt status) accompanying
the registration information will be subject to backup withholding. See the
Account Application for applicable IRS penalties. The minimum initial investment
for Advisor Class shares is $500.
    
 
    AFS' mailing address is:
 
                                 A I M Fund Services, Inc.
                                 P.O. Box 4739
                                 Houston, TX 77210-4739
 
    For additional information or assistance, investors should call the Client
Services Department of AFS at:
 
                                 (800) 959-4246
 
   
    Advisor Class shares of any Advisor Class Funds not named on the cover of
this Prospectus, as well as Class A, Class B and Class C shares of other funds
distributed by AIM Distributors ("AIM Funds"), are offered
    
 
                                      A-1
<PAGE>
                              AIM INVESTOR'S GUIDE
pursuant to separate prospectuses. Copies of other prospectuses may be obtained
by calling (800) 347-4246.
 
   
    INITIAL AND SUBSEQUENT PURCHASES BY WIRE:  To insure prompt credit to his
account, an investor or his Financial Adviser should call AFS' Client Services
Department at (800) 959-4246 prior to sending a wire to receive a reference
number for the wire. The following wire instructions should be used:
    
 
<TABLE>
<S>                              <C>
Beneficiary Bank ABA/Routing #:  113000609
Beneficiary Account Number:      00100366807
Beneficiary Account Name:        A I M Fund Services, Inc.
RFB:                             Fund name, Reference Number (16 character limit)
                                 Shareholder Name, Shareholder Account Number
OBI:                             (70 character limit)
</TABLE>
 
    It is recommended that investors in wrap fee accounts and advisory accounts
place orders through their Financial Advisers.
 
   
    HOW TO PURCHASE ADDITIONAL SHARES.  Additional Advisor Class shares may be
purchased directly through AIM Distributors or through any Financial Adviser who
has entered into an agreement with AIM Distributors. The minimum investment for
additional purchases of Advisor Class shares is $50.
    
 
    BY MAIL:  Investors must indicate their account number and the name of the
Fund being purchased. The remittance slip from a confirmation statement should
be used for this purpose, and sent to AFS.
 
    BY AIM BANK CONNECTION(SM):  To purchase additional Advisor Class shares by
electronic funds transfer, please contact the Client Services Department of AFS
for details.
- --------------------------------------------------------------------------------
   
TERMS AND CONDITIONS OF PURCHASE OF THE AIM FUNDS
    
 
   
    In addition to the Advisor Class Funds, the AIM Funds consist of the
following funds: AIM ADVISOR FLEX FUND, AIM ADVISOR INTERNATIONAL VALUE FUND,
AIM ADVISOR LARGE CAP VALUE FUND, AIM ADVISOR MULTIFLEX FUND, AIM ADVISOR REAL
ESTATE FUND, AIM AGGRESSIVE GROWTH FUND, AIM ASIAN GROWTH FUND, AIM BALANCED
FUND, AIM BLUE CHIP FUND, AIM CAPITAL DEVELOPMENT FUND, AIM CHARTER FUND, AIM
CONSTELLATION FUND, AIM EUROPEAN DEVELOPMENT FUND, AIM GLOBAL AGGRESSIVE GROWTH
FUND, AIM GLOBAL GROWTH FUND, AIM GLOBAL INCOME FUND, AIM GLOBAL UTILITIES FUND,
AIM HIGH INCOME MUNICIPAL FUND, AIM HIGH YIELD FUND, AIM INCOME FUND, AIM
INTERMEDIATE GOVERNMENT FUND, AIM INTERNATIONAL EQUITY FUND, AIM LIMITED
MATURITY TREASURY FUND, AIM MONEY MARKET FUND, AIM MUNICIPAL BOND FUND, AIM
SELECT GROWTH FUND, AIM SMALL CAP OPPORTUNITIES FUND, AIM TAX-EXEMPT BOND FUND
OF CONNECTICUT, AIM TAX-EXEMPT CASH FUND, AIM TAX-FREE INTERMEDIATE FUND, AIM
VALUE FUND and AIM WEINGARTEN FUND, collectively (other than AIM AGGRESSIVE
GROWTH FUND, AIM LIMITED MATURITY TREASURY FUND, AIM TAX-EXEMPT BOND FUND OF
CONNECTICUT, AIM TAX-EXEMPT CASH FUND and AIM TAX-FREE INTERMEDIATE FUND), with
the Advisor Class Funds, the "Multiple Class Funds." For information on
purchasing any of the AIM Funds and to receive a prospectus, please call (800)
347-4246. Net asset value is determined in the manner described under the
caption "Determination of Net Asset Value."
    
 
   
    Advisor Class shares are offered through this Prospectus to (a) trustees or
other fiduciaries purchasing shares for employee benefit plans that are
sponsored by organizations that have at least 1,000 employees; (b) any account
with assets of at least $10,000 if (i) a financial planner, trust company, bank
trust department or registered investment adviser has investment discretion over
the account and (ii) the account holder pays such person as compensation for its
advice and other services an annual fee of at least .50% of the assets in the
account; (c) any account with assets of at least $10,000 if (i) the account is
established under a "wrap fee" program and (ii) the account holder pays the
sponsor of such program an annual fee of at least .50% of the assets in the
account; (d) accounts advised by INVESCO (NY), Inc. or one of the companies
formerly affiliated with Liechtenstein Global Trust AG, provided such accounts
were invested in Advisor Class shares on May 29, 1998; (e) any of the companies
affiliated with AMVESCAP PLC; and (f) AIM GLOBAL TRENDS FUND (certain Advisor
Class Funds only).
    
 
   
    Financial planners, trust companies, bank trust departments and registered
investment advisers referenced in clause (b) above, and sponsors of "wrap fee"
programs referenced in clause (c) above are collectively referred to as
"Financial Advisers." Financial Advisers and other fiduciaries may be required
to provide information satisfactory to AIM Distributors concerning their
eligibility to purchase Advisor Class shares.
    
 
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                              AIM INVESTOR'S GUIDE
   
Investors in wrap fee programs and advisory accounts may only purchase Advisor
Class shares through Financial Advisers who have entered into agreements with
AIM Distributors. Investors may be charged a fee by their agents or brokers for
effecting transactions in Advisor Class shares.
    
 
   
    AIM Distributors may, from time to time, pay a bonus or other consideration
or incentive to dealers who sell a minimum dollar amount of the shares of the
AIM Funds during a specified period of time. In some instances, these incentives
may be offered only to certain dealers who have sold or may sell significant
amounts of shares. At the option of the dealer, such incentives may take the
form of payment for travel expenses, including lodging, incurred in connection
with trips taken by qualifying registered representatives and their families to
places within or outside the United States. The total amount of such additional
bonus payments or other consideration shall not exceed 0.25% of the public
offering price of the shares sold. Any such bonus or incentive programs will not
change the price paid by investors for the purchase of the applicable AIM Fund's
shares or the amount that any particular AIM Fund will receive as proceeds from
such sales. Dealers may not use sales of the AIM Funds' shares to qualify for
any incentives to the extent that such incentives may be prohibited by the laws
of any state.
    
 
   
    TIMING OF PURCHASE ORDERS.  Orders for the purchase of Advisor Class shares
received prior to the close of regular trading on the New York Stock Exchange
("NYSE"), which is generally 4:00 p.m. Eastern Time (and which is hereinafter
referred to as "NYSE Close"), on any business day of an AIM Fund will be
confirmed at the price next determined. Orders received after NYSE Close will be
confirmed at the price determined on the next business day of the AIM Fund.
Certain financial institutions (or their designees) may be authorized to accept
purchase orders on behalf of the AIM Funds. Orders received by authorized
institutions (or their designees) before NYSE Close will be deemed to have been
received by an AIM Fund on such day and will be effected that day, provided that
such orders are transmitted to the Transfer Agent prior to the time set for
receipt of such orders. It is the responsibility of the dealer/financial
institution to ensure that all orders are transmitted on a timely basis to the
Transfer Agent. Any loss resulting from the dealer/financial institution's
failure to submit an order within the prescribed time frame will be borne by
that dealer/financial institution. Please see "How to Purchase Shares -- Initial
and Subsequent Purchases by Wire" for information on obtaining a reference
number for wire orders, which will facilitate the handling of such orders and
ensure prompt credit to an investor's account. A "business day" of an AIM Fund
is any day on which the NYSE is open for business. It is expected that the NYSE
will be closed during the next twelve months on Saturdays and Sundays and on the
days on which New Year's Day, Martin Luther King, Jr. Day, Presidents' Day, Good
Friday, Memorial Day, Independence Day, Labor Day, Thanksgiving Day and
Christmas Day are observed by the NYSE.
    
 
   
    An investor who uses a check to purchase shares will be credited with the
full number of shares purchased at the time of receipt of the purchase order, as
previously described. However, in the event of a redemption or exchange of such
shares, the investor may be required to wait up to ten business days before the
redemption proceeds are sent. This delay is necessary in order to ensure that
the check has cleared. If the check does not clear, or if any investment order
must be cancelled due to nonpayment, the investor will be responsible for any
resulting loss to an AIM Fund or to AIM Distributors.
    
 
   
    SPECIAL INFORMATION RELATING TO AIM DOLLAR FUND.  Because AIM DOLLAR FUND
uses the amortized cost method of valuing the securities it holds and rounds its
per share net asset value to the nearest whole cent, it is anticipated that the
net asset value of the shares of that fund will remain constant at $1.00 per
share. However, there is no assurance that AIM DOLLAR FUND can maintain a $1.00
net asset value per share. AIM DOLLAR FUND generally will not issue share
certificates but will record investor holdings in noncertificate form and
regularly advise the shareholder of his ownership position.
    
 
   
    SHARE CERTIFICATES.  Share certificates for all AIM Funds will be issued
upon written request by a shareholder to AIM Distributors or the Transfer Agent.
Otherwise, such shares will be held on the shareholder's behalf by the
applicable AIM Fund(s) and be recorded on the books of such fund(s). See
"Exchange Privilege -- Exchanges by Telephone" and "How to Redeem Shares --
Redemptions by Telephone" for restrictions applicable to shares issued in
certificate form.
    
 
    MINIMUM ACCOUNT BALANCE.  If (1) an account opened in a fund has been in
effect for at least one year and the shareholder has not made an additional
purchase in that account within the preceding six calendar months and (2) the
value of such account drops below $500 for three consecutive months as a result
of
 
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                              AIM INVESTOR'S GUIDE
   
redemptions or exchanges, the fund has the right to redeem the account, after
giving the shareholder 60 days' prior written notice, unless the shareholder
makes additional investments within the notice period to bring the account value
up to $500. If a fund determines that a shareholder has provided incorrect
information in opening an account with a fund or in the course of conducting
subsequent transactions with the fund related to such account, the fund may, in
its discretion, redeem the account and distribute the proceeds of such
redemption to the shareholder.
    
 
    FOR ANY FUND NAMED ON THE COVER PAGE OF THIS PROSPECTUS, AIM DISTRIBUTORS
AND ITS AGENTS RESERVE THE RIGHT AT ANY TIME (1) TO WITHDRAW ALL OR ANY PART OF
THE OFFERING MADE BY THIS PROSPECTUS; (2) TO REJECT ANY PURCHASE OR EXCHANGE
ORDER OR TO CANCEL ANY PURCHASE DUE TO NONPAYMENT OF THE PURCHASE PRICE; (3) TO
INCREASE, WAIVE OR LOWER THE MINIMUM INVESTMENT REQUIREMENTS; OR (4) TO MODIFY
ANY OF THE TERMS OR CONDITIONS OF PURCHASE OF SHARES OF SUCH FUND. For any fund
named on the cover page, AIM Distributors and its agents will use their best
efforts to provide notice of any such actions through correspondence with
broker-dealers and existing shareholders, supplements to the AIM Funds'
prospectuses, or other appropriate means, and will provide sixty (60) days'
notice in the case of termination or material modification to the exchange
privilege discussed under the caption "Exchange Privilege."
- --------------------------------------------------------------------------------
 
[SPECIAL PLANS
 
   
    Except as noted below, each Advisor Class Fund provides the special plans
described below for the convenience of its Advisor Class shareholders. Once
established, there is no obligation to continue to invest through a plan, and a
shareholder may terminate a plan at any time.
    
 
   
    Special plan applications and further information, including details of any
fees which are charged to a shareholder investing through a plan, may be
obtained by written request, directed to AFS at the address provided under "How
to Purchase Shares," or by calling the Client Services Department of AFS at
(800) 959-4246. IT IS RECOMMENDED THAT A SHAREHOLDER CONSIDERING ANY OF THE
PLANS DESCRIBED HEREIN CONSULT A TAX ADVISOR BEFORE COMMENCING PARTICIPATION IN
SUCH A PLAN.
    
 
   
    AUTOMATIC DIVIDEND INVESTMENT PLAN.  Advisor Class shareholders may elect to
have all dividends and distributions declared by an Advisor Class Fund paid in
cash or invested at net asset value either in Advisor Class shares of the same
Advisor Class Fund or invested in shares of another Advisor Class Fund. See
"Dividends, Distributions and Tax Matters -- Dividends and Distributions" for a
description of payment dates for these options. In order to qualify to have
dividends and distributions of one Advisor Class Fund invested in shares of
another Advisor Class Fund, the following conditions must be satisfied: (a) the
shareholder must have an account balance in the dividend paying fund of at least
$5,000; (b) the account must be held in the name of the shareholder (i.e., the
account may not be held in nominee name); and (c) the shareholder must have
requested and completed an authorization relating to the reinvestment of
dividends into another Advisor Class Fund. An authorization may be given on the
account application or on an authorization form available from AIM Distributors.
An Advisor Class Fund will waive the $5,000 minimum account value requirement if
the shareholder has an account in the fund selected to receive the dividends and
distributions with a value of at least $500.
    
 
   
    PORTFOLIO REBALANCING PROGRAM.  The Portfolio Rebalancing Program
("Program") permits eligible shareholders to establish and maintain an
allocation across a range of Advisor Class Funds. The Program automatically
rebalances holdings of Advisor Class Funds to the established allocation on a
periodic basis. Under the Program, a shareholder may predesignate, on a
percentage basis, how the total value of his or her holdings in a minimum of
two, and a maximum of ten, Advisor Class Funds ("Personal Portfolio") is to be
rebalanced on a quarterly, semiannual, or annual basis.
    
 
   
    Rebalancing under the Program will be effected through the exchange of
shares of one or more Advisor Class Funds in the shareholder's Personal
Portfolio for shares of the same class(es) of one or more other Advisor Class
Funds in the shareholder's Personal Portfolio. See "Exchange Privilege." If
shares of the Advisor Class Fund(s) in a shareholder's Personal Portfolio have
appreciated during a rebalancing period, the Program will result in shares of
Advisor Class Fund(s) that have appreciated most during the period being
exchanged for shares of Advisor Class Fund(s) that have appreciated least. SUCH
EXCHANGES ARE NOT TAX-FREE AND MAY RESULT IN A SHAREHOLDER'S REALIZING A GAIN OR
LOSS, AS THE CASE MAY BE, FOR FEDERAL INCOME TAX PURPOSES. See "Dividends,
Distributions and Tax Matters -- Dividends and Distributions." Participation in
    
 
                                      A-4
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                              AIM INVESTOR'S GUIDE
the Program does not assure that a shareholder will profit from purchases under
the Program nor does it prevent or lessen losses in a declining market.
 
   
    The Program will automatically rebalance the shareholder's Personal
Portfolio on the 28th day of the last month of the period chosen (or the
immediately preceding business day if the 28th is not a business day), subject
to any limitations below. The Program will not execute an exchange if the
variance in a shareholder's Personal Portfolio for a particular Advisor Class
Fund would be 2% or less. In predesignating percentages, shareholders must use
whole percentages and totals must equal 100%. Shareholders participating in the
Program may not request issuance of physical certificates representing an
Advisor Class Fund's shares. The AIM Funds and AIM Distributors reserve the
right to modify, suspend, or terminate the Program at any time on 60 days' prior
written notice to shareholders. A request to participate in the Program must be
received in good order at least five business days prior to the next rebalancing
date. Once a shareholder establishes the Program for his or her Personal
Portfolio, a shareholder cannot cancel or change which rebalancing frequency,
which Advisor Class Funds or what allocation percentages are assigned to the
Program, unless canceled or changed in writing and received by the Transfer
Agent in good order at least five business days prior to the rebalancing date.
Certain dealers/financial institutions may charge a fee for establishing
accounts relating to the Program. Investors should contact their
dealers/financial institutions or AIM Distributors for more information.]
    
- --------------------------------------------------------------------------------
EXCHANGE PRIVILEGE
 
   
    TERMS AND CONDITIONS OF EXCHANGES.  Advisor Class shareholders of the
Advisor Class Funds may participate in an exchange privilege as described below.
AIM Distributors acts as distributor for the Advisor Class Funds which represent
a range of different investment objectives and policies.
    
 
   
    Advisor Class shares of any Advisor Class Fund may be exchanged only for
Advisor Class shares of any other Advisor Class Fund.
    
 
   
    Investors in wrap fee programs and advisory accounts interested in making an
exchange should contact their Financial Advisers to request the prospectus of an
Advisor Class Fund being considered. Other investors should contact AIM
Distributors for the appropriate prospectus.
    
 
   
    An exchange is permitted only in the following circumstances: (a) the dollar
amount of the exchange must be at least equal to the minimum investment
applicable to the shares of the Advisor Class Fund acquired through such
exchange; (b) the shares of the Advisor Class Fund acquired through exchange
must be qualified for sale in the state in which the shareholder resides; (c)
the exchange must be made between accounts having identical registrations and
addresses; (d) the full amount of the purchase price for the shares being
exchanged must have already been received by the fund; (e) the account from
which shares have been exchanged must be coded as having a certified taxpayer
identification number on file or, in the alternative, an appropriate IRS Form
W-8 (certificate of foreign status) or Form W-9 (certifying exempt status) must
have been received by the fund; (f) newly acquired shares (through either an
initial or subsequent investment) are held in an account for at least ten
business days, and all other shares are held in an account for at least one day,
prior to the exchange; and (g) certificates representing shares must be returned
before shares can be exchanged. There is no fee for exchanges among the Advisor
Class Funds.
    
 
   
    THE CURRENT PROSPECTUS OF EACH OF THE ADVISOR CLASS FUNDS AND CURRENT
INFORMATION CONCERNING THE OPERATION OF THE EXCHANGE PRIVILEGE ARE AVAILABLE
THROUGH AIM DISTRIBUTORS OR THROUGH ANY DEALER WHO HAS EXECUTED AN APPLICABLE
AGREEMENT WITH AIM DISTRIBUTORS. BEFORE EXCHANGING SHARES, INVESTORS SHOULD
REVIEW THE PROSPECTUSES OF THE FUNDS WHOSE SHARES WILL BE ACQUIRED THROUGH
EXCHANGE. EXCHANGES OF SHARES ARE CONSIDERED TO BE SALES FOR FEDERAL AND STATE
INCOME TAX PURPOSES AND MAY RESULT IN A TAXABLE GAIN OR LOSS TO A SHAREHOLDER.
    
 
    THE EXCHANGE PRIVILEGE IS NOT AN OPTION OR RIGHT TO PURCHASE SHARES BUT IS
PERMITTED UNDER THE RESPECTIVE POLICIES OF THE PARTICIPATING FUNDS, AND MAY BE
MODIFIED OR DISCONTINUED BY ANY OF SUCH FUNDS OR BY AIM DISTRIBUTORS AT ANY
TIME, AND TO THE EXTENT PERMITTED BY APPLICABLE LAW, WITHOUT NOTICE.
 
   
    Shares of any Advisor Class Fund to be exchanged are redeemed at their net
asset value as determined at NYSE Close on the day that an exchange request in
proper form (described below) is received. Exchange requests received after NYSE
Close will result in the redemption of shares at their net asset value at NYSE
Close on the next business day. Normally, Advisor Class shares of an Advisor
Class Fund to be acquired by exchange are purchased at their net asset value
determined on the date that such request is received, but
    
 
                                      A-5
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                              AIM INVESTOR'S GUIDE
   
under unusual market conditions such purchases may be delayed for up to five
business days if it is determined that an Advisor Class Fund would be materially
disadvantaged by an immediate transfer of the proceeds of the exchange. If a
shareholder is exchanging into an Advisor Class Fund that declares daily
dividends ("Dividends, Distributions and Tax Matters -- Dividends and
Distributions," below), and the release of the exchange proceeds is delayed for
the foregoing five-day period, such shareholder will not begin to accrue
dividends until the sixth business day after the exchange. Advisor Class shares
purchased by check may not be exchanged until it is determined that the check
has cleared, which may take up to ten business days from the date that the check
is received. See "Terms and Conditions of Purchase of the AIM Funds -- Timing of
Purchase Orders."
    
 
   
    In the event of unusual market conditions, AIM Distributors reserves the
right to reject any exchange request, if, in the judgment of AIM Distributors,
the number of requests or the total value of the shares that are the subject of
the exchange places a material burden on a fund. For example, the number of
exchanges by investment managers making market timing exchanges may be limited.
    
 
   
    EXCHANGES BY MAIL.  Investors exchanging their Advisor Class shares by mail
should send a written request to AFS. The request should contain the account
registration and account number, the dollar amount or number of Advisor Class
shares to be exchanged, and the names of the Advisor Class Funds from which and
into which the exchange is to be made. The request should comply with all of the
requirements for redemption by mail. See "How to Redeem Shares."
    
 
   
    EXCHANGES BY TELEPHONE.  Shareholders or their agents may request an
exchange by telephone. A shareholder may give exchange information to his
Financial Adviser. If a shareholder does not wish to allow telephone exchanges
by any person in his account, he should decline that option on the account
application. AIM Distributors has made arrangements with certain dealers and
investment advisory firms to accept telephone instructions to exchange shares
between any of the Advisor Class Funds. AIM Distributors reserves the right to
impose conditions on dealers or investment advisors who make telephone exchanges
of shares of the Advisor Class Funds, including the condition that any such
dealer or investment advisor enter into an agreement (which contains additional
conditions with respect to exchanges of shares) with AIM Distributors. To
exchange shares by telephone, a Financial Adviser, shareholder or dealer who has
satisfied the foregoing conditions must call AFS at (800) 959-4246. If a
Financial Adviser, shareholder or dealer is unable to reach AFS by telephone, he
may also request exchanges by telegraph or use overnight courier services to
expedite exchanges by mail, which will be effective on the business day received
by the Transfer Agent as long as such request is received prior to NYSE Close.
The Transfer Agent and AIM Distributors will not be liable for any loss, expense
or cost arising out of any telephone exchange request that they reasonably
believe 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 may include recordings of telephone transactions (maintained for six
months), requests for confirmation of the shareholder's Social Security Number
and current address, and mailings of confirmations promptly after the
transaction.
    
- --------------------------------------------------------------------------------
HOW TO REDEEM SHARES
 
   
    Shares of the AIM Funds may be redeemed directly through AIM Distributors or
through any dealer/ financial institution who has entered into an agreement with
AIM Distributors. In addition to the obligation of the fund(s) named on the
cover page to redeem shares, AIM Distributors also repurchases shares. No
redemption fee is imposed when Advisor Class shares are redeemed or repurchased;
however, dealers/ financial institutions may charge service fees for handling
repurchase transactions.
    
 
    REDEMPTIONS BY MAIL.  Redemption requests must be in writing and sent to the
Transfer Agent. Upon receipt of a redemption request in proper form, payment
will be made as soon as practicable, but in any event will normally be made
within seven days after receipt. However, in the event of a redemption of shares
purchased by check, the investor may be required to wait up to ten business days
before the redemption proceeds are sent. See "Terms and Conditions of Purchase
of the AIM Funds -- Timing of Purchase Orders."
 
   
    Requests for redemption must include: (a) original signatures of each
registered owner exactly as the shares are registered; (b) the fund and the
account number of shares to be redeemed; (c) share certificates, either properly
endorsed or accompanied by a duly executed stock power, for the shares to be
redeemed if such certificates have been issued and the shares are not in the
custody of the Transfer Agent; (d) signature guarantees, as described below; and
(e) any additional documents that may be required for redemption by
    
 
                                      A-6
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                              AIM INVESTOR'S GUIDE
   
corporations, partnership, trusts or other entities. The burden is on the
shareholder to inquire as to whether any additional documentation is required.
Any request not in proper form may be rejected and in such case must be renewed
in writing.
    
 
   
    REDEMPTIONS BY TELEPHONE.  Shareholders may request a redemption by
telephone. If a shareholder does not wish to allow telephone redemptions by any
person in his account, he should decline that option on the account application.
The telephone redemption feature can be used only if: (a) the redemption
proceeds are to be mailed to the address of record or transferred electronically
or wired to the pre-authorized bank account; (b) there has been no change of
address of record on the account within the preceding 30 days; (c) the shares to
be redeemed are not in certificate form; (d) the person requesting the
redemption can provide proper identification information, and (e) the proceeds
of the redemption do not exceed $50,000. AIM Distributors has made arrangements
with certain dealers and investment advisors to accept telephone instructions
for the redemption of shares. AIM Distributors reserves the right to impose
conditions on these dealers and investment advisors, including the condition
that they enter into agreements (which contain additional conditions with
respect to the redemption of shares) with AIM Distributors. The Transfer Agent
and AIM Distributors 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 appropriate form 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 may include recordings of telephone transactions (maintained for six
months), requests for confirmation of the shareholder's taxpayer identification
number and current address, and mailings of confirmations promptly after the
transaction.
    
 
   
    TIMING AND PRICING OF REDEMPTION ORDERS.  Advisor Class shares of the
Advisor Class Funds are redeemed at their net asset value next computed after a
request for redemption in proper form (including signature guarantees and other
required documentation for written redemptions) is received by the Transfer
Agent or certain financial institutions (or their designees) who are authorized
to accept redemption orders on behalf of the AIM Funds, provided that such
orders are transmitted to the Transfer Agent prior to the time set for receipt
of such orders. Orders for the redemption of Advisor Class shares received on
any business day of an AIM Fund will be confirmed at the price determined as of
the close of that day. Orders received after NYSE Close will be confirmed at the
price determined on the next business day of an AIM Fund. It is the
responsibility of the dealer/financial institution to ensure that all orders are
transmitted on a timely basis. Any resulting loss from the dealer/financial
institution's failure to submit a request for redemption within the prescribed
time frame will be borne by that dealer/financial institution. Telephone
redemption requests must be made by NYSE Close on any business day of an AIM
Fund and will be confirmed at the price determined as of the close of that day.
No AIM Fund will accept requests which specify a particular date for redemption
or which specify any special conditions.
    
 
    Payment of the proceeds of redeemed shares is normally made within seven
days following the redemption date. However, in the event of a redemption of
shares purchased by check, the investor may be required to wait up to ten
business days before the redemption proceeds are sent. See "Terms and Conditions
of Purchase of the AIM Funds -- Timing of Purchase Orders." A charge for special
handling (such as wiring of funds or expedited delivery services) may be made by
the Transfer Agent. The right of redemption may not be suspended or the date of
payment upon redemption postponed except under unusual circumstances such as
when trading on the NYSE is restricted or suspended. Payment of the proceeds of
redemptions relating to shares for which checks sent in payment have not yet
cleared will be delayed until it is determined that the check has cleared, which
may take up to ten business days from the date that the check is received.
 
    SIGNATURE GUARANTEES.  A signature guarantee is designed to protect the
investor, the AIM Funds, AIM Distributors, and their agents by verifying the
signature of each investor seeking to redeem, transfer, or exchange shares of an
AIM Fund. Examples of when signature guarantees are required are: (1)
redemptions by mail in excess of $50,000; (2) redemptions by mail if the
proceeds are to be paid to someone other than the name(s) in which the account
is registered; (3) written redemptions requesting proceeds to be sent to other
than the bank of record for the account; (4) redemptions requesting proceeds to
be sent to a new address or an address that has been changed within the past 30
days; (5) requests to transfer the registration of shares to another owner, (6)
telephone exchange and telephone redemption authorization forms; (7) changes in
previously designated wiring or electronic funds transfer instructions, and (8)
written redemptions or exchanges of shares previously reported as lost, whether
or not the redemption amount is under $50,000 or the
 
                                      A-7
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                              AIM INVESTOR'S GUIDE
proceeds are to be sent to the address of record. These requirements may be
waived or modified upon notice to shareholders.
 
    Acceptable guarantors include banks, broker-dealers, credit unions, national
securities exchanges, savings associations and any other organization, provided
that such institution or organization qualifies as an "eligible guarantor
institution" as that term in defined in rules adopted by the Securities and
Exchange Commission ("SEC"), and further provided that such guarantor
institution is listed in one of the reference guides contained in the Transfer
Agent's current Signature Guarantee Standards and Procedures, such as certain
domestic banks, credit unions, securities dealers, or securities exchanges. The
Transfer Agent will also accept signatures with either: (1) a signature
guaranteed with a medallion stamp of the STAMP Program, or (2) a signature
guaranteed with a medallion stamp of the NYSE Medallion Signature Program,
provided that in either event, the amount of the transaction involved does not
exceed the surety coverage amount indicated on the medallion. For information
regarding whether a particular institution or organization qualifies as an
"eligible guarantor institution," an investor should contact the Client Services
Department of AFS.
- --------------------------------------------------------------------------------
   
DETERMINATION OF NET ASSET VALUE
    
 
   
    The net asset value per share (or share price) of each Advisor Class Fund is
determined as of 4:00 p.m. Eastern Time on each "business day" of a fund as
previously defined. In the event the NYSE closes early (i.e. before 4:00 p.m.
Eastern Time) on a particular day, the net asset value of an Advisor Class
Fund's share will be determined as of the close of the NYSE on such day. For
purposes of defining net asset value per share, futures and options contracts
generally will be valued 15 minutes after the close of trading of the NYSE. The
net asset value per share is calculated by subtracting a class' liabilities from
its assets and dividing the result by the total number of class shares
outstanding. The determination of net asset value per share is made in
accordance with generally accepted accounting principles. Among other items,
liabilities include accrued expenses and dividends payable, and total assets
include portfolio securities valued at their market value, as well as income
accrued but not yet received. Securities for which market quotations are not
readily available are valued at fair value as determined in good faith by or
under the supervision of the fund's officers and in accordance with methods
which are specifically authorized by its governing Board of Directors or
Trustees. Short-term obligations with maturities of 60 days or less, and the
securities held by the AIM DOLLAR FUND, are valued at amortized cost as
reflecting fair value.
    
 
   
    Generally, trading in foreign securities, corporate bonds, U.S. Government
securities and money market instruments is substantially completed each day at
various times prior to the close of the NYSE. The values of such securities used
in computing the net asset value of an AIM Fund's shares are determined as of
such times. Foreign currency exchange rates are also generally determined prior
to the close of the NYSE. Occasionally, events affecting the values of such
securities and such exchange rates may occur between the times at which the
values of the securities are determined and the close of the NYSE which will not
be reflected in the computation of an AIM Fund's net asset value. If events
materially affecting the value of such securities occur during such period, then
these securities will be valued at their fair value as determined in good faith
by or under the supervision of the Board of Directors or Trustees of the
applicable AIM Fund. Securities listed primarily on foreign exchanges may trade
on days when the NYSE is closed (such as a Saturday). As a result, the net asset
value of a fund may be significantly affected by such trading on days when
shareholders cannot purchase or redeem shares of that fund.
    
 
                                      A-8
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                              AIM INVESTOR'S GUIDE
 
   
DIVIDENDS, DISTRIBUTIONS AND TAX MATTERS
    
 
   
DIVIDENDS AND DISTRIBUTIONS
    
 
   
    Each Advisor Class Fund's policy regarding the payment of dividends and
distributions is set forth below.
    
 
   
<TABLE>
<CAPTION>
                                                                                    DISTRIBUTIONS    DISTRIBUTIONS
                                                                                       OF NET           OF NET
                                                           DIVIDENDS FROM             REALIZED         REALIZED
                                                           NET INVESTMENT            SHORT-TERM        LONG-TERM
FUND                                                           INCOME               CAPITAL GAINS    CAPITAL GAINS
- --------------------------------------------------  ----------------------------  -----------------  -------------
<S>                                                 <C>                           <C>                <C>
AIM AMERICA VALUE FUND............................  declared and paid annually    annually           annually
AIM DEVELOPING MARKETS FUND.......................  declared and paid annually    annually           annually
AIM DOLLAR FUND...................................  declared daily; paid monthly  annually           annually
AIM EMERGING MARKETS FUND.........................  declared and paid annually    annually           annually
AIM EUROPE GROWTH FUND............................  declared and paid annually    annually           annually
AIM GLOBAL CONSUMER PRODUCTS AND SERVICES FUND....  declared and paid annually    annually           annually
AIM GLOBAL FINANCIAL SERVICES FUND................  declared and paid annually    annually           annually
AIM GLOBAL GOVERNMENT INCOME FUND.................  declared and paid monthly     annually           annually
AIM GLOBAL GROWTH & INCOME FUND...................  declared and paid quarterly   annually           annually
AIM GLOBAL HEALTH CARE FUND.......................  declared and paid annually    annually           annually
AIM GLOBAL HIGH INCOME FUND.......................  declared and paid monthly     annually           annually
AIM GLOBAL INFRASTRUCTURE FUND....................  declared and paid annually    annually           annually
AIM GLOBAL RESOURCES FUND.........................  declared and paid annually    annually           annually
AIM GLOBAL TELECOMMUNICATIONS FUND................  declared and paid annually    annually           annually
AIM GLOBAL TRENDS FUND............................  declared and paid annually    annually           annually
AIM INTERNATIONAL GROWTH FUND.....................  declared and paid annually    annually           annually
AIM JAPAN GROWTH FUND.............................  declared and paid annually    annually           annually
AIM LATIN AMERICAN GROWTH FUND....................  declared and paid annually    annually           annually
AIM MID CAP GROWTH FUND...........................  declared and paid annually    annually           annually
AIM NEW PACIFIC GROWTH FUND.......................  declared and paid annually    annually           annually
AIM SMALL CAP EQUITY FUND.........................  declared and paid annually    annually           annually
AIM STRATEGIC INCOME FUND.........................  declared and paid monthly     annually           annually
AIM WORLDWIDE GROWTH FUND.........................  declared and paid annually    annually           annually
</TABLE>
    
 
   
    In determining the amount of capital gains, if any, available for
distribution, net capital gains are offset against available net capital losses,
if any, carried forward from previous fiscal periods. Each Advisor Class Fund
may make additional distributions, if necessary, to avoid a non-deductible 4%
federal excise tax on certain undistributed income and capital gain (the "Excise
Tax").
    
 
   
    All dividends and distributions of an AIM Fund are automatically reinvested
on the payment date in full and fractional shares of such fund, unless the
shareholder has made an alternate election as to the method of payment.
Dividends and distributions attributable to Advisor Class shares of an Advisor
Class Fund are reinvested in additional Advisor Class shares of that fund,
absent an election by a shareholder to receive cash or to have such dividends
and distributions reinvested in Advisor Class shares of another Advisor Class
Fund, to the extent permitted. For funds that do not declare a dividend daily,
such dividends and distributions will be reinvested at the net asset value per
share determined on the ex-dividend date. For funds that declare a dividend
daily, such dividends and distributions will be reinvested at the net asset
value per share determined on the payable date. Shareholders may elect, by
written notice to the Transfer Agent, to receive such distributions, or only the
dividend portion thereof, in cash, or to invest such dividends and distributions
in Advisor Class shares of another Advisor Class Fund. Investors who have not
previously selected such a reinvestment option on the account application form
may contact the Transfer Agent at any time to obtain a form to authorize such
reinvestments in another Advisor Class Fund.
    
 
   
    Dividends on Advisor Class shares of an Advisor Class Fund are expected to
be higher than dividends on shares of other classes of that fund because of the
service and distribution fees paid by those other classes of shares. Dividends
on all shares may also be affected by other class-specific expenses.
    
 
   
    Changes in the form of dividend and distribution payments may be made by the
shareholder at any time by notice to the Transfer Agent and are effective as to
any subsequent payment if such notice is received by the Transfer Agent prior to
the record date of such payment. Any dividend and distribution election remains
in effect until the Transfer Agent receives a revised written election by the
shareholder.
    
 
   
    Any dividend or distribution paid by a fund which does not declare dividends
daily has the effect of reducing the net asset value per share on the
ex-dividend date by the amount of the dividend or distribution. Therefore, a
dividend or distribution declared shortly after a purchase of shares by an
investor would represent, in substance, a return of capital to the shareholder
with respect to such shares even though it would be subject to income taxes, as
discussed below.
    
 
                                      A-9
<PAGE>
                              AIM INVESTOR'S GUIDE
 
TAX MATTERS
 
    Each AIM Fund has qualified and intends to continue to qualify for treatment
as a regulated investment company under Subchapter M of the Code. As long as a
fund qualifies for this tax treatment, it is not subject to federal income tax
on net investment income, net capital gains and net gains from foreign currency
transactions, if any, that are distributed to its shareholders. Each fund, for
all federal tax purposes (including determining taxable income, distribution
requirements and other requirements of Subchapter M), is treated as a separate
corporation. Therefore, no fund may offset its gains against another fund's
losses, and each fund must individually comply with all of the provisions of the
Code that are applicable to its operations.
 
   
    TAX TREATMENT OF DIVIDENDS AND DISTRIBUTIONS -- GENERAL.  Because each AIM
Fund intends to distribute to its shareholders substantially all of its net
investment income, net realized capital gains and net gains from foreign
currency transactions, if any, it is not expected that any such fund will be
required to pay any federal income tax. Each AIM Fund also intends to meet the
distribution requirements of the Code to avoid imposition of the Excise Tax.
Nevertheless, shareholders normally are subject to federal income tax, and any
applicable state and local income taxes, on the dividends and distributions
received by them from a fund whether in the form of cash or additional fund
shares. With respect to tax-exempt shareholders, dividends and distributions
from the AIM Funds are not subject to federal income taxation to the extent
permitted under the applicable tax exemption.
    
 
    Dividends from an AIM Fund's net investment income, net short-term capital
gain and net gains from certain foreign currency transactions are taxable to its
shareholders as ordinary income to the extent of its earnings and profits.
Distributions of net capital gain (i.e., the excess of net long-term capital
gain over net short-term capital loss) are taxable as long-term capital gains,
regardless of the length of time the shareholder held his shares. Under the
Taxpayer Relief Act of 1997, different maximum tax rates apply to a non-
corporate taxpayer's net capital gain depending on the taxpayer's holding period
and marginal rate of federal income tax -- generally, 28% for gain recognized on
capital assets held for more than one year but not more than 18 months and 20%
(10% for taxpayers in the 15% marginal tax bracket) for gain recognized on
capital assets held for more than 18 months. An AIM Fund may divide each net
capital gain distribution into a 28% rate gain distribution and a 20% rate gain
distribution (in accordance with its holding periods for the securities it sold
that generated the distributed gain), in which event its shareholders must treat
those portions accordingly; thus, the relevant holding period is determined by
how long the fund has held the securities on which the gain was realized, not by
how long a shareholder has held fund shares.
 
   
    Dividends paid by a fund (but not other distributions) may qualify for the
federal 70% dividends received deduction for corporate shareholders to the
extent of the qualifying dividends received by the fund on domestic common or
preferred stock. It is not likely that dividends received from AIM Developing
Markets Fund, AIM Dollar Fund, AIM Emerging Markets Fund, AIM Europe Growth
Fund, AIM Global Government Income Fund, AIM Global High Income Fund, AIM Global
Trends Fund, AIM International Growth Fund, AIM Japan Growth Fund, AIM Latin
American Growth Fund, AIM New Pacific Growth Fund and AIM Strategic Income Fund
will qualify for this dividends received deduction.
    
 
    Shortly after the end of each year, shareholders will receive information
regarding the amount and federal income tax treatment of all dividends and
distributions paid during the year. The information regarding capital gain
distributions will designate the portions thereof subject to the different
maximum rates of tax applicable to non-corporate taxpayers' net capital gain
indicated above. Certain dividends and distributions declared in October,
November or December of a calendar year are taxable to shareholders as though
received on December 31 of that year if paid to them during January of the
following calendar year.
 
    For each redemption of a fund's shares by a non-exempt shareholder, the fund
or the securities dealer effecting the transaction is required to file an
information return with the IRS.
 
    TO AVOID BEING SUBJECT TO FEDERAL INCOME TAX WITHHOLDING AT THE RATE OF 31%
ON TAXABLE DIVIDENDS, DISTRIBUTIONS AND REDEMPTION PAYMENTS, SHAREHOLDERS OF A
FUND MUST FURNISH THE FUND WITH THEIR TAXPAYER IDENTIFICATION NUMBER AND CERTIFY
UNDER PENALTIES OF PERJURY THAT THE NUMBER PROVIDED IS CORRECT AND THAT THEY ARE
NOT SUBJECT TO BACKUP WITHHOLDING FOR ANY REASON.
 
    Under the Code, nonresident alien individuals, foreign partnerships and
foreign corporations may be subject to federal income tax withholding at a 30%
rate on ordinary income dividends. Under applicable treaty law, residents of
treaty countries may qualify for a reduced rate of withholding or a withholding
exemption.
 
                                      A-10
<PAGE>
                              AIM INVESTOR'S GUIDE
 
    DIVIDENDS AND DISTRIBUTIONS MAY BE SUBJECT TO TREATMENT UNDER FOREIGN, STATE
OR LOCAL TAX LAWS THAT DIFFERS FROM THE FEDERAL INCOME TAX CONSEQUENCES
DISCUSSED HEREIN. ADDITIONAL INFORMATION ABOUT TAXES IS SET FORTH IN THE
STATEMENTS OF ADDITIONAL INFORMATION. INVESTORS SHOULD CONSULT THEIR TAX
ADVISORS BEFORE INVESTING.
 
   
    AIM AMERICA VALUE FUND, AIM DOLLAR FUND, AIM GLOBAL GOVERNMENT INCOME FUND,
AIM GLOBAL GROWTH & INCOME FUND, AIM GLOBAL HIGH INCOME FUND, AIM MID CAP GROWTH
FUND, AIM SMALL CAP EQUITY FUND AND AIM STRATEGIC INCOME FUND -- SPECIAL TAX
INFORMATION. Certain states exempt from income taxes dividends paid by mutual
funds attributable to interest on U.S. Treasury and certain other U.S.
government obligations. Investors should consult with their own tax advisors
concerning the availability of such exemption.
    
 
   
    AIM DEVELOPING MARKETS FUND, AIM EMERGING MARKETS FUND, AIM EUROPE GROWTH
FUND, AIM GLOBAL CONSUMER PRODUCTS AND SERVICES FUND, AIM GLOBAL FINANCIAL
SERVICES FUND, AIM GLOBAL GROWTH & INCOME FUND, AIM GLOBAL HEALTH CARE FUND, AIM
GLOBAL INFRASTRUCTURE FUND, AIM GLOBAL RESOURCES FUND, AIM GLOBAL
TELECOMMUNICATIONS FUND, AIM INTERNATIONAL GROWTH FUND, AIM JAPAN GROWTH FUND,
AIM LATIN AMERICAN GROWTH FUND, AIM NEW PACIFIC GROWTH FUND AND AIM WORLDWIDE
GROWTH FUND -- SPECIAL TAX INFORMATION.  For taxable years in which it is
eligible to do so, each of these funds may elect to pass through to its
shareholders credits for foreign taxes paid. If a fund makes such an election, a
shareholder who receives a distribution (1) will be required to include in gross
income his proportionate share of foreign taxes allocable to the distribution
and (2) may claim a credit or deduction for such share for his taxable year in
which the distribution is received, subject to the general limitations imposed
on the allowance of foreign tax credits and deductions. Shareholders should also
note that certain gains or losses attributable to fluctuations in exchange rates
or foreign currency forward contracts may increase or decrease the amount of
income of the fund available for distribution to shareholders and should note
that if, for any fund, such losses exceed other income during a taxable year,
the fund would not be able to pay ordinary income dividends for that year.
    
 
GENERAL INFORMATION
 
    CUSTODIAN AND TRANSFER AGENT.  State Street Bank and Trust Company, 225
Franklin Street, Boston, Massachusetts 02110, serves as custodian for the
portfolio securities and cash of the Advisor Class Funds. Chase Bank of Texas,
N.A., P.O. Box 2558, Houston, Texas 77252-8084, serves as Sub-Custodian for
retail purchases of the AIM Funds.
 
    A I M Fund Services, Inc., P.O. Box 4739, Houston, Texas 77210-4739, a
wholly-owned subsidiary of AIM, serves as each Advisor Class Fund's transfer
agent and dividend payment agent.
 
    SHAREHOLDER INQUIRIES.  Shareholder inquiries concerning their accounts
should be directed to an A I M Fund Services, Inc. Client Services
Representative by calling (800) 959-4246. The Transfer Agent may impose certain
copying charges for requests for copies of shareholder account statements and
other historical account information older than the current year and the
immediately preceding year.
 
    YEAR 2000 COMPLIANCE PROJECT.  In providing services to the AIM Funds, AIM
Management and its subsidiaries rely on both internal software systems as well
as external software systems provided by third parties (the "Software"). Many
software systems in use today are unable to distinguish between the year 2000
from the year 1900. This defect if not cured will likely adversely affect the
services that AIM Management, its subsidiaries and other service providers to
the AIM Funds provide the AIM Funds and their shareholders.
 
    To address this issue, AIM Management and its subsidiaries, together with
independent technology consultants, are undertaking a comprehensive Year 2000
Compliance Project (the "Project"). The Project consists of three phases, namely
(i) inventorying every software application in use at AIM Management and its
subsidiaries, as well as remote, third party software systems on which AIM
Management and its subsidiaries rely, (ii) identifying those applications that
may not function properly after December 31, 1999, and (iii) correcting and
subsequently testing those applications that may not function properly after
December 31, 1999. Phases (i) and (ii) are complete and Phase (iii) has
commenced. The Project is scheduled to be completed during the fourth quarter of
1998. Software applications acquired by AIM Management and its subsidiaries
after completion of the Project will be reviewed to confirm Year 2000 compliance
upon installation.
 
    OTHER INFORMATION.  This Prospectus sets forth basic information that
investors should know about the fund(s) named on the cover page prior to
investing. Recipients of this Prospectus will be provided with a copy of the
annual report of the fund(s) to which this Prospectus relates, upon request and
without charge. If
 
                                      A-11
<PAGE>
                              AIM INVESTOR'S GUIDE
several members of a household own shares of the same fund, only one annual or
semi-annual report will be mailed to that address. To receive additional copies,
please call (800) 347-4246, or write to A I M Distributors, Inc., P.O. Box 4739,
Houston, Texas 77210-4739. A Statement of Additional Information has been filed
with the SEC and is available upon request and without charge, by writing or
calling AIM Distributors. 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. This Prospectus omits
certain information contained in the registration statement filed with the SEC.
Copies of the registration statement, including items omitted from this
Prospectus, may be obtained from the SEC by paying the charges prescribed under
its rules and regulations.
 
                                      A-12
<PAGE>
                             AIM GLOBAL TRENDS FUND
 
   
                                     [LOGO]
 
INVESTMENT MANAGER
A I M Advisors, Inc.
11 Greenway Plaza, Suite 100
Houston, TX 77046-1173
    
 
   
SUB-ADVISER
INVESCO (NY), Inc.
50 California Street, 27th Floor
San Francisco, CA 94111
    
 
   
PRINCIPAL UNDERWRITER
A I M Distributors, Inc.
P.O. Box 4739
Houston, TX 77210-4739
    
 
TRANSFER AGENT
A I M Fund Services, Inc.
P.O. Box 4739
Houston, TX 77210-4739
 
   
CUSTODIAN
State Street Bank and Trust Company
225 Franklin Street
Boston, MA 02110
    
 
   
INDEPENDENT ACCOUNTANTS
    
 
   
[            ]
[            ]
[            ]
    
 
  For more complete information about any other fund in The AIM Family of
  Funds-Registered Trademark-, including charges and expenses, please call
  (800) 347-4246 or write to A I M Distributors, Inc. and request a free
  prospectus. Please read the prospectus carefully before you invest or send
  money.
<PAGE>
 
   
<TABLE>
<S>                                                       <C>
                                                                    STATEMENT OF
                                                          ADDITIONAL INFORMATION
</TABLE>
    
 
   
                    CLASS A, CLASS B, AND CLASS C SHARES OF
                             AIM GLOBAL TRENDS FUND
    
 
   
                   (A SERIES PORTFOLIO OF A I M SERIES TRUST)
    
 
   
                               11 Greenway Plaza
                                   Suite 100
                             Houston, TX 77046-1173
                                 (713) 626-1919
    
 
                            ------------------------
 
   
        THIS STATEMENT OF ADDITIONAL INFORMATION IS NOT A PROSPECTUS AND
           IT SHOULD BE READ IN CONJUNCTION WITH A PROSPECTUS OF THE
             ABOVE-NAMED FUND, A COPY OF WHICH MAY BE OBTAINED FREE
                OF CHARGE FROM AUTHORIZED DEALERS OR BY WRITING
                           A I M DISTRIBUTORS, INC.,
                     P.O. BOX 4739, HOUSTON, TX 77210-4739
                          OR BY CALLING (800) 347-4246
    
 
                            ------------------------
 
   
          STATEMENT OF ADDITIONAL INFORMATION DATED SEPTEMBER 8, 1998
   RELATING TO THE AIM GLOBAL TRENDS FUND PROSPECTUS DATED SEPTEMBER 8, 1998
    
 
                   Statement of Additional Information Page 1
<PAGE>
                               TABLE OF CONTENTS
 
- --------------------------------------------------------------------------------
 
   
<TABLE>
<CAPTION>
                                                                                                                           Page No.
                                                                                                                           --------
<S>                                                                                                                        <C>
Introduction.............................................................................................................      3
General Information About the Fund.......................................................................................      3
Investment Objective and Policies........................................................................................      4
Options, Futures and Currency Strategies.................................................................................      8
Risk Factors of the Underlying Theme Portfolios..........................................................................     17
Investment Limitations...................................................................................................     23
Execution of Portfolio Transactions......................................................................................     28
Trustees and Executive Officers..........................................................................................     30
Control Persons and Principal Holders of Securities......................................................................     32
Management...............................................................................................................     33
The Distribution Plans...................................................................................................     33
The Distributor..........................................................................................................     36
Valuation of Fund Shares.................................................................................................     38
How to Purchase and Redeem Shares........................................................................................     38
Taxes....................................................................................................................     40
Additional Information...................................................................................................     42
Investment Results.......................................................................................................     43
Description of Debt Ratings..............................................................................................     48
Financial Statements.....................................................................................................     50
</TABLE>
    
 
                                     [LOGO]
 
                   Statement of Additional Information Page 2
<PAGE>
                             AIM GLOBAL TRENDS FUND
 
   
                                  INTRODUCTION
    
 
- --------------------------------------------------------------------------------
 
   
This  Statement of Additional  Information relates to  the Class A,  Class B and
Class C shares of AIM Global Trends Fund (the "Fund"). The Fund is a diversified
series of  AIM Series  Trust (the  "Trust"), an  open-end management  investment
company  organized as a  Delaware business trust. The  Fund seeks its investment
objective by investing  substantially all  of its assets  in shares  of the  AIM
Global  Theme Funds: AIM Global Consumer  Products and Services Fund; AIM Global
Financial Services Fund; AIM Global Health Care Fund; AIM Global  Infrastructure
Fund;  AIM  Global  Resources  Fund;  and  AIM  Global  Telecommunications  Fund
(collectively, the  "Underlying Theme  Funds").  A I  M Advisors,  Inc.  ("AIM")
serves  as the  investment manager  of and  administrator for  the Fund. INVESCO
(NY), Inc.  (the "Sub-adviser")  serves  as the  investment sub-adviser  of  and
sub-administrator for the Fund.
    
 
   
The  Trust is a series mutual fund.  The rules and regulations of the Securities
and Exchange  Commission  (the  "SEC")  require  all  mutual  funds  to  furnish
prospective  investors certain information  concerning the activities  of a fund
being considered for investment.  This information is  included in a  Prospectus
(the "Prospectus"), dated September 8, 1998, which relates to the Class A, Class
B and Class C shares of the Fund. Copies of the Prospectus and additional copies
of  this Statement of  Additional Information may be  obtained without charge by
writing the principal distributor of the Funds' shares, A I M Distributors, Inc.
("AIM Distributors"), P.O. Box 4739, Houston, TX 77210-4739, or by calling (800)
347-4246. Investors must receive a Prospectus before they invest in the Fund.
    
 
   
This Statement  of Additional  Information is  intended to  furnish  prospective
investors   with  additional  information  concerning  the  Fund.  Some  of  the
information required to be in this  Statement of Additional Information is  also
included  in the  Fund's current Prospectus,  and in order  to avoid repetition,
reference will be made herein to  sections of the Prospectus. Additionally,  the
Prospectus and this Statement of Additional Information omit certain information
contained  in the Trust's  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 TRUST
    
 
- --------------------------------------------------------------------------------
   
THE TRUST AND ITS SHARES
    
 
   
The  Trust was previously organized as  a Massachusetts business trust named "GT
Global Series Trust," which was established on August 26, 1996 and which had one
series named "GT  Global New Dimension  Fund." On  May 29, 1998,  the Trust  was
reorganized  into a Delaware business trust,  which was initially established on
May 7, 1998.  The Trust currently  consists of  one series, the  Fund. The  Fund
currently  offers  four different  classes of  shares: Class  A shares,  Class B
shares, Class C shares and Advisor Class shares. From time to time the Board  of
Trustees of the Trust may create new series of shares without the necessity of a
vote  of  the shareholders  of  the Trust.  All  historical financial  and other
information contained in  this Statement of  Additional Information for  periods
prior  to May 29, 1998 relating  to the Fund is that  of GT Global New Dimension
Fund.
    
 
   
This Statement of Additional Information relates solely to the Class A, Class  B
and Class C shares of the Fund.
    
 
   
The  term "majority of the outstanding shares" of the Trust, of the Fund or of a
particular class of the Fund means, respectively, the vote of the lesser of  (a)
67%  or more of the shares of the Trust, Fund or such class present at a meeting
of the Trust's shareholders, if the holders of more than 50% of the  outstanding
shares of the Trust, the Fund or such class are present or represented by proxy,
or  (b) more than 50% of  the outstanding shares of the  Trust, the Fund or such
class.
    
 
   
Class A, Class  B, Class  C and  Advisor Class shares  of each  Fund have  equal
rights and privileges. Each share of a particular class is entitled to one vote,
to  participate equally in  dividends and distributions  declared by the Trust's
Board of Trustees
    
 
                   Statement of Additional Information Page 3
<PAGE>
                             AIM GLOBAL TRENDS FUND
   
with respect to  the class of  the Fund and,  upon liquidation of  the Fund,  to
participate  proportionately in  the net  assets of  the Fund  allocable to such
class remaining  after  satisfaction  of outstanding  liabilities  of  the  Fund
allocable  to such class.  Fund shares are fully  paid, non-assessable and fully
transferable when issued and have no preemptive rights and have such  conversion
and  exchange  rights as  set  forth in  the  Prospectus and  this  Statement of
Additional Information. Fractional shares have proportionately the same  rights,
including voting rights, as are provided for a full share.
    
 
   
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 trustees may elect all  of the members of the Board of  Trustees
of  the Trust. In such event, the remaining holders cannot elect any trustees of
the Trust.
    
 
- --------------------------------------------------------------------------------
 
                            INVESTMENT OBJECTIVE AND
                                    POLICIES
 
- --------------------------------------------------------------------------------
 
INVESTMENT POLICIES OF THE FUND
The following supplements the information contained in the Prospectus concerning
the investment policies of the Fund.
 
U.S. GOVERNMENT SECURITIES. The Fund may invest in various direct obligations of
the U.S. Treasury and obligations issued or guaranteed by the U.S. government or
one  of  its  agencies  or  instrumentalities  (collectively,  "U.S.  government
securities").  Among the U.S. government securities that may be held by the Fund
are securities that are  supported by the  full faith and  credit of the  United
States;  securities that are supported by the right of the issuer to borrow from
the U.S. Treasury; and securities that are supported solely by the credit of the
instrumentality.
 
REPURCHASE  AGREEMENTS.  The  Fund  may  invest  in  repurchase  agreements.   A
repurchase  agreement is  a transaction in  which the  Fund purchases securities
from a bank or recognized securities dealer and simultaneously commits to resell
the securities to the bank or dealer  on an agreed-upon date or upon demand  and
at  a price reflecting a market rate of interest unrelated to the coupon rate or
maturity of  the  purchased  securities.  The  Fund  maintains  custody  of  the
underlying  securities prior  to their repurchase;  thus, the  obligation of the
bank or dealer to pay the repurchase price on the date agreed to is, in  effect,
secured  by such securities. If  the value of these  securities is less than the
repurchase price, plus any agreed-upon additional amount, the other party to the
agreement must provide additional collateral so that at all times the collateral
is at  least equal  to the  repurchase price,  plus any  agreed-upon  additional
amount.  The difference between the total  amount to be received upon repurchase
of the securities and the  price that was paid by  the Fund upon acquisition  is
accrued  as  interest  and included  in  its net  investment  income. Repurchase
agreements carry  certain  risks  not  associated  with  direct  investments  in
securities,  including possible declines  in the market  value of the underlying
securities and delays and costs to the  Fund if the other party to a  repurchase
agreement becomes insolvent.
 
INVESTMENT POLICIES OF THE UNDERLYING THEME FUNDS
The following supplements the information contained in the Prospectus concerning
the  investment policies  and limitations  of the  Underlying Theme  Funds. More
information about the  investment policies and  restrictions and the  investment
limitations  of each Underlying Theme Fund is  set forth in the Underlying Theme
Funds' prospectus and statement of additional information.
 
   
The Underlying Theme Funds are diversified  series of AIM Investment Funds  (the
"Underlying  Trust"), a  registered open-end management  investment company. The
AIM Global Consumer Products and Services Fund ("Consumer Products and  Services
Fund"),  AIM  Global Financial  Services Fund  ("Financial Services  Fund"), AIM
Global Infrastructure  Fund ("Infrastructure  Fund"), and  AIM Global  Resources
Fund  ("Resources Fund") (each, a "Feeder  Fund," and, collectively, the "Feeder
Funds") each  invests  all of  its  investable  assets in  the  Global  Consumer
Products  and Services  Portfolio, Global  Financial Services  Portfolio, Global
Infrastructure Portfolio, and Global  Resources Portfolio (each, a  "Portfolio,"
and, collectively, the "Portfolios"), respectively.
    
 
   
Each  Portfolio is  a subtrust (a  "series") of Global  Investment Portfolio (an
open-end management investment  company) with  an investment  objective that  is
identical  to  that of  its corresponding  Underlying  Theme Fund.  Whenever the
phrase "all of the Underlying Theme Fund's investable assets" is used herein, it
means that the  only investment securities  held by  a Feeder Fund  will be  its
interest  in  its  corresponding  Portfolio.  A  Feeder  Fund  may  withdraw its
investment in its corresponding Portfolio at any time, if the Underlying Trust's
Board of Trustees determines that it is in the best interests of the Feeder Fund
and its shareholders to do so. Upon any such withdrawal, a Feeder Fund's  assets
would be invested in
    
 
                   Statement of Additional Information Page 4
<PAGE>
                             AIM GLOBAL TRENDS FUND
accordance with the investment policies of its corresponding Portfolio described
below and in the Underlying Theme Funds' prospectus.
 
The  investment objective of  each Feeder Fund is  long-term capital growth. The
investment objectives of the  AIM Global Health Care  Fund ("Health Care  Fund")
and  the  AIM  Global Telecommunications  Fund  ("Telecommunications  Fund") are
long-term capital appreciation and  long-term capital growth, respectively.  The
Portfolios  and the Health Care Fund  and the Telecommunications Fund, together,
are referred to herein as the "Underlying Theme Portfolios."
 
SELECTION OF EQUITY INVESTMENTS. With respect to the Global Resources Portfolio,
the Sub-adviser has identified four areas that it expects will create investment
opportunities: (i)  improving supply/demand  fundamentals, which  may result  in
higher  commodity  prices; (ii)  privatization  of state-owned  natural resource
businesses; (iii) management which  can improve production efficiencies  without
correspondingly  increasing commodity  prices; and  (iv) service  companies with
emerging technologies that can enhance productivity or reduce production  costs.
Of course, there is no certainty that these factors will produce the anticipated
results.
 
With respect to the Telecommunications Fund, the Sub-adviser has identified four
areas  that it expects will create investment opportunities: (i) deregulation of
companies in  the industry,  which  will allow  competition to  promote  greater
efficiencies;  (ii) privatization of  state-owned telecommunications businesses;
(iii) development of infrastructure in underdeveloped countries and upgrading of
services in other countries;  and (iv) emerging  technologies that will  enhance
productivity  and reduce  costs in  the telecommunications  industry. Of course,
there is no certainty that these factors will produce the anticipated results.
 
There may be times when, in  the opinion of the Sub-adviser, prevailing  market,
economic  or  political  conditions  warrant  reducing  the  proportion  of  the
Underlying Theme Portfolios' assets invested in equity securities and increasing
the proportion held in cash  (U.S. dollars, foreign currencies or  multinational
currency  units) or  invested in  debt securities  or high  quality money market
instruments  issued  by  corporations,  or  the  United  States,  or  a  foreign
government.  A portion of each Underlying Theme Portfolio's assets normally will
be held  in cash  (U.S. dollars,  foreign currencies  or multinational  currency
units)  or invested in foreign or domestic high quality money market instruments
pending investment of proceeds from new sales of Underlying Theme Fund shares to
provide for ongoing expenses and to satisfy redemptions.
 
For  each  Underlying  Theme  Portfolio's  investment  purposes,  an  issuer  is
typically  considered as located in a particular  country if it (a) is organized
under the laws of or  has its principal office in  a particular country, or  (b)
normally  derives  50% or  more  of its  total  revenues from  business  in that
country, provided that, in  the Sub-adviser's view, the  value of such  issuer's
securities  will tend to reflect such  country's development to a greater extent
than developments elsewhere. However, these  are not absolute requirements,  and
certain  companies incorporated  in a particular  country and  considered by the
Sub-adviser  to  be  located  in  that  country  may  have  substantial  foreign
operations  or subsidiaries and/or export sales  exceeding in size the assets or
sales in that country.
 
   
In  certain  countries,  governmental  restrictions  and  other  limitations  on
investment  may affect a Underlying Theme  Portfolio's ability to invest in such
countries. In addition, in some instances only special classes of securities may
be purchased by  foreigners and  the market  prices, liquidity  and rights  with
respect  to  those  securities may  vary  from  shares owned  by  nationals. The
Sub-adviser is not  aware at this  time of  the existence of  any investment  or
exchange  control regulations which might substantially impair the operations of
the Underlying  Theme Portfolios  as described  in the  Underlying Theme  Funds'
prospectus  and  statement of  additional information.  Restrictions may  in the
future, however, make it undesirable to invest in certain countries. None of the
Underlying Theme Portfolios has  a present intention  of making any  significant
investment in any country or stock market in which the Sub-adviser considers the
political  or economic situation to threaten  an Underlying Theme Portfolio with
substantial or total loss of its investment in such country or market.
    
 
INVESTMENTS IN OTHER INVESTMENT COMPANIES.  Each Underlying Theme Portfolio  may
invest  in the securities of investment  companies within the limitations of the
Investment Company Act of 1940, as  amended (the "1940 Act"). These  limitations
currently  provide that, in general, an  Underlying Theme Portfolio may purchase
shares of  an investment  company unless  (a)  such a  purchase would  cause  an
Underlying  Theme Portfolio to  own in the  aggregate more than  3% of the total
outstanding voting stock of the investment company or (b) such a purchase  would
cause the Underlying Theme Portfolio to have more than 5% of its assets invested
in  the  investment  company or  more  than 10%  of  its assets  invested  in an
aggregate of all such  investment companies. The  foregoing restrictions do  not
apply  to the investment of the  Feeder Funds in their corresponding Portfolios.
Investment in  closed-end  investment  companies  may  involve  the  payment  of
substantial  premiums above the  value of such  companies' portfolio securities.
Each Underlying Theme  Portfolio does not  intend to invest  in such  investment
companies  unless, in the judgment of the Sub-adviser, the potential benefits of
such
 
                   Statement of Additional Information Page 5
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                             AIM GLOBAL TRENDS FUND
investments justify the payment of any  applicable premiums. The return on  such
securities  will be reduced  by operating expenses  of such companies, including
payments to the investment managers of those investment companies.
 
DEPOSITORY RECEIPTS.  An  Underlying  Theme Portfolio  may  hold  securities  of
foreign  issuers in the form of  American Depository Receipts ("ADRs"), American
Depository Shares ("ADSs")  and European Depository  Receipts ("EDRs") or  other
securities  convertible  into  securities  of  eligible  foreign  issuers. These
securities may  not necessarily  be  denominated in  the  same currency  as  the
securities  for which they may be exchanged.  ADRs and ADSs are typically issued
by an  American bank  or  trust company  and  evidence ownership  of  underlying
securities  issued by a foreign corporation.  EDRs, which are sometimes referred
to as Continental Depository Receipts  ("CDRs"), are issued in Europe  typically
by foreign banks and trust companies and evidence ownership of either foreign or
domestic  securities. Generally, ADRs  and ADSs in  registered form are designed
for use in U.S. securities markets and EDRs in bearer form are designed for  use
in   European  securities  markets.  For   purposes  of  each  Underlying  Theme
Portfolio's investment policies, an Underlying Theme Portfolio's investments  in
ADRs,  ADSs and EDRs will  be deemed to be  investments in the equity securities
representing securities of foreign issuers into which they may be converted.
 
ADR facilities may be established as either "unsponsored" or "sponsored."  While
ADRs  issued under these two  types of facilities are  in some respects similar,
there are distinctions between  them relating to the  rights and obligations  of
ADR holders and the practices of market participants. A depository may establish
an  unsponsored  facility  without  participation by  (or  even  necessarily the
acquiescence of) the issuer of the deposited securities, although typically  the
depository  requests a  letter of  non-objection from  such issuer  prior to the
establishment of the facility.  Holders of unsponsored  ADRs generally bear  all
the  costs  of such  facilities. The  depository usually  charges fees  upon the
deposit and withdrawal of the deposited securities, the conversion of  dividends
into   U.S.  dollars,  the  disposition   of  non-cash  distributions,  and  the
performance of  other  services.  The  depository  of  an  unsponsored  facility
frequently  is  under  no obligation  to  distribute  shareholder communications
received from the issuer of the  deposited securities or to pass-through  voting
rights  to ADR  holders in  respect of  the deposited  securities. Sponsored ADR
facilities are created in generally  the same manner as unsponsored  facilities,
except  that  the  issuer of  the  deposited  securities enters  into  a deposit
agreement with the  depository. The deposit  agreement sets out  the rights  and
responsibilities  of  the  issuer,  the depository  and  the  ADR  holders. With
sponsored facilities, the issuer of the deposited securities generally will bear
some of the costs relating to the facility (such as dividend payment fees of the
depository), although ADR holders continue to bear certain other costs (such  as
deposit  and withdrawal fees).  Under the terms  of most sponsored arrangements,
depositories agree  to distribute  notices of  shareholder meetings  and  voting
instructions, and to provide shareholder communications and other information to
the  ADR holders at the  request of the issuer  of the deposited securities. The
Underlying Theme Portfolios may invest in both sponsored and unsponsored ADRs.
 
WARRANTS OR RIGHTS. Warrants  or rights may be  acquired by an Underlying  Theme
Portfolio  in connection  with other  securities or  separately and  provide the
Underlying Theme Portfolio  with the  right to purchase  at a  later date  other
securities of the issuer.
 
LENDING  OF UNDERLYING THEME PORTFOLIO SECURITIES.  For the purpose of realizing
additional income, each Underlying Theme Portfolio may make secured loans of its
securities holdings  amounting  to  not  more than  30%  of  its  total  assets.
Securities  loans are made to broker/dealers or institutional investors pursuant
to agreements requiring that the loans be continuously secured by collateral  at
least  equal at all times  to the value of the  securities lent plus any accrued
interest, "marked to market" on a  daily basis. The Underlying Theme  Portfolios
may pay reasonable administrative and custodial fees in connection with the loan
of  their securities.  While the securities  loan is  outstanding, an Underlying
Theme Portfolio  will continue  to receive  the equivalent  of the  interest  or
dividends  paid by  the issuer  on the  securities, as  well as  interest on the
investment of the  collateral or a  fee from the  borrower. An Underlying  Theme
Portfolio  will have a right to call  each loan and obtain the securities within
the stated settlement period.  An Underlying Theme Portfolio  will not have  the
right  to vote equity securities while they are being lent, but it may call in a
loan in anticipation of  any important vote.  Loans will only  be made to  firms
deemed by the Sub-adviser to be of good standing and will not be made unless, in
the  judgment of the Sub-adviser, the consideration to be earned from such loans
would justify  the  risk.  The  risks  in  lending  Underlying  Theme  Portfolio
securities,  as with  other extensions  of secured  credit, consist  of possible
delays in receiving additional collateral or  in recovery of the securities  and
possible loss of rights in the collateral should the borrower fail financially.
 
COMMERCIAL   BANK  OBLIGATIONS.  For  the  purposes  of  each  Underlying  Theme
Portfolio's investment policies with respect to bank obligations, obligations of
foreign branches  of U.S.  banks and  of foreign  banks are  obligations of  the
issuing bank and may be general obligations of the parent bank. Such obligations
may, however, be limited by the terms of a specific obligation and by government
regulation.  As with investments in  non-U.S. securities in general, investments
in the obligations of foreign  branches of U.S. banks  and of foreign banks  may
subject each Underlying Theme Portfolio to
 
                   Statement of Additional Information Page 6
<PAGE>
                             AIM GLOBAL TRENDS FUND
investment  risks that are different in  some respects from those of investments
in obligations of U.S.  issuers. Although each  Underlying Theme Portfolio  will
typically  acquire obligations  issued and  supported by  the credit  of U.S. or
foreign banks having total assets at the time of purchase of $1 billion or more,
this $1  billion figure  is not  an  investment policy  or restriction  of  each
Underlying  Theme Portfolio. For the purposes of calculation with respect to the
$1 billion figure, the assets of a bank will be deemed to include the assets  of
its U.S. and non-U.S. branches.
 
   
REPURCHASE  AGREEMENTS.  A repurchase  agreement is  a  transaction in  which an
Underlying Theme  Portfolio  purchases  securities from  a  bank  or  recognized
securities  dealer and  simultaneously commits to  resell the  securities to the
bank or dealer on an agreed-upon date or upon demand and at a price reflecting a
market rate  of  interest  unrelated to  the  coupon  rate or  maturity  of  the
purchased  securities. Although  repurchase agreements  carry certain  risks not
associated with direct investments in securities, including possible decline  in
the  market  value of  the underlying  securities  and delays  and costs  to the
Underlying Theme  Portfolio  if the  other  party to  the  repurchase  agreement
becomes   bankrupt,  the  Underlying  Theme  Portfolios  intend  to  enter  into
repurchase agreements only with banks and dealers believed by the Sub-adviser to
present minimal credit risks  in accordance with  guidelines established by  the
Underlying  Trust's or Global  Investment Portfolio's Board  of Trustees (each a
"Board" and, collectively,  the "Boards"), as  applicable. The Sub-adviser  will
review   and  monitor  the  creditworthiness  of  such  institutions  under  the
applicable Board's general supervision.
    
 
Each Underlying  Theme  Portfolio  will invest  only  in  repurchase  agreements
collateralized  at all times in an amount at least equal to the repurchase price
plus accrued interest. To  the extent that  the proceeds from  any sale of  such
collateral  upon a default  in the obligation  to repurchase were  less than the
repurchase price, an  Underlying Theme  Portfolio would  suffer a  loss. If  the
financial  institution that is  party to the  repurchase agreement petitions for
bankruptcy or  otherwise  becomes subject  to  bankruptcy or  other  liquidation
proceedings,  there  may  be  restrictions on  an  Underlying  Theme Portfolio's
ability to sell the collateral and it could suffer a loss. However, with respect
to financial  institutions  whose  bankruptcy  or  liquidation  proceedings  are
subject  to the U.S. Bankruptcy Code, each Underlying Theme Portfolio intends to
comply with provisions under such code that would allow the immediate resale  of
such  collateral.  Each  Underlying  Theme  Portfolio  will  not  enter  into  a
repurchase agreement with a maturity  of more than seven  days if, as a  result,
more  than 15% of the value of its  net assets (except for the Health Care Fund,
more than  10% of  the value  of its  total assets)  would be  invested in  such
repurchase agreements and other illiquid investments.
 
BORROWING,   REVERSE  REPURCHASE   AGREEMENTS  AND   "ROLL"  TRANSACTIONS.  Each
Underlying Theme Portfolio's  borrowings will not  exceed 33 1/3%  of its  total
assets,  I.E., the Underlying  Theme Portfolio's total assets  at all times will
equal at  least  300%  of  the  amount  of  outstanding  borrowings.  If  market
fluctuations in the value of an Underlying Theme Portfolio's securities holdings
or  other factors cause the ratio of  its total assets to outstanding borrowings
to fall below 300%, within three  days (excluding Sundays and holidays) of  such
event  that  Underlying  Theme  Portfolio  may  be  required  to  sell portfolio
securities to restore the  300% asset coverage, even  though from an  investment
standpoint  such sales might be disadvantageous. Each Underlying Theme Portfolio
may also borrow up to 5% of its total assets for temporary or emergency purposes
other than to meet redemptions. Any  borrowing by an Underlying Theme  Portfolio
may  cause greater fluctuation in the value of its shares than would be the case
if it did not borrow.
 
Each Underlying Theme Portfolio's  fundamental investment limitations permit  it
to  borrow  money  for  leveraging  purposes.  However,  each  Underlying  Theme
Portfolio (except the Health Care Fund)  is currently prohibited, pursuant to  a
non-fundamental  investment policy,  from borrowing  money in  order to purchase
securities. Nevertheless,  this policy  may  be changed  in  the future  by  the
applicable  Board.  If an  Underlying Theme  Portfolio  employs leverage  in the
future, it would be subject to certain additional risks. Use of leverage creates
an opportunity for greater growth of capital but would exaggerate any  increases
or  decreases in  the net asset  value of a  Feeder Fund or  an Underlying Theme
Portfolio. When the income and gains  on securities purchased with the  proceeds
of  borrowings  exceed  the  costs  of  such  borrowings,  an  Underlying  Theme
Portfolio's earnings or  a Feeder Fund's  net asset value  will increase  faster
than  otherwise would be the case; conversely,  if such income and gains fail to
exceed such costs, an Underlying Theme  Portfolio's earnings or a Feeder  Fund's
net asset value would decline faster than would otherwise be the case.
 
   
Each  Underlying Theme Portfolio may enter into reverse repurchase agreements. A
reverse repurchase agreement is a borrowing transaction in which the  Underlying
Theme  Portfolio transfers possession of securities  to another party, such as a
bank or  broker/dealer,  in  return  for cash,  and  agrees  to  repurchase  the
securities  in the future  at an agreed  upon price, which  includes an interest
component. Each Underlying Theme Portfolio  may also engage in "roll"  borrowing
transactions, which involve the sale of Government National Mortgage Association
certificates  or  other securities  together with  a  commitment (for  which the
Underlying Theme  Portfolio may  receive a  fee) to  purchase similar,  but  not
identical,  securities at  a future date.  Each Underlying  Theme Portfolio will
segregate cash  or  liquid securities  in  an  amount sufficient  to  cover  its
obligations  under "roll"  transactions and  reverse repurchase  agreements with
broker/dealers. No  segregation is  required for  reverse repurchase  agreements
with banks.
    
 
                   Statement of Additional Information Page 7
<PAGE>
                             AIM GLOBAL TRENDS FUND
 
SHORT SALES. Each Underlying Theme Portfolio may make short sales of securities.
A  short sale is  a transaction in  which an Underlying  Theme Portfolio sells a
security in anticipation that the market price of that security will decline. An
Underlying Theme Portfolio  may make short  sales (i)  as a form  of hedging  to
offset   potential  declines  in  long  positions  in  securities  it  owns,  or
anticipates acquiring, or in similar securities,  and (ii) in order to  maintain
flexibility in its securities holdings.
 
When  an Underlying Theme Portfolio makes a short sale of a security it does not
own, it must borrow the security sold short and deliver it to the  broker/dealer
or other intermediary through which it made the short sale. The Underlying Theme
Portfolio  may have to pay a fee  to borrow particular securities and will often
be obligated to pay over any payments received on such borrowed securities.
 
An Underlying Theme Portfolio's obligation to replace the borrowed security when
the borrowing is called or expires will be secured by collateral deposited  with
the  intermediary.  The  Underlying Theme  Portfolio  will also  be  required to
deposit collateral with its custodian to  the extent, if any, necessary so  that
the  value of both collateral deposits in the aggregate is at all times equal to
at least 100% of the current market value of the security sold short.  Depending
on  arrangements made with the intermediary  from which it borrowed the security
regarding payment of any amounts received by it on such security, an  Underlying
Theme  Portfolio  may  not  receive any  payments  (including  interest)  on its
collateral deposited with such intermediary.
 
If the price of the security sold short increases between the time of the  short
sale  and the time an Underlying Theme Portfolio replaces the borrowed security,
it will incur a  loss; conversely, if the  price declines, the Underlying  Theme
Portfolio  will  realize  a gain.  Any  gain  will be  decreased,  and  any loss
increased, by the transaction costs associated with the transaction. Although an
Underlying Theme Portfolio's gain is limited by  the price at which it sold  the
security short, its potential loss theoretically is unlimited.
 
No  Underlying Theme Portfolio will make a short sale if, after giving effect to
the sale, the market value of the securities sold short exceeds 25% of the value
of its total assets or  its aggregate short sales of  the securities of any  one
issuer  exceed the lesser of 2% of its net assets or 2% of the securities of any
class of the issuer. Moreover, an Underlying Theme Portfolio may engage in short
sales only with respect to securities listed on a national securities exchange.
 
- --------------------------------------------------------------------------------
 
                         OPTIONS, FUTURES AND CURRENCY
                                   STRATEGIES
 
- --------------------------------------------------------------------------------
 
SPECIAL RISKS OF OPTIONS, FUTURES AND CURRENCY STRATEGIES
The use by  the Underlying Theme  Portfolios of options,  futures contracts  and
forward currency contracts ("Forward Contracts") involves special considerations
and  risks, as described  below. Risks pertaining  to particular instruments are
described in the sections that follow.
 
        (1) Successful  use  of  most  of these  instruments  depends  upon  the
    Sub-adviser's  ability to  predict movements  of the  overall securities and
    currency markets, which requires different skills than predicting changes in
    the prices of individual securities. While the Sub-adviser is experienced in
    the use of these instruments, there can be no assurance that any  particular
    strategy adopted will succeed.
 
        (2)  There  might  be  imperfect correlation,  or  even  no correlation,
    between price  movements  of  an  instrument  and  price  movements  of  the
    investments being hedged. For example, if the value of an instrument used in
    a  short hedge  increased by less  than the  decline in value  of the hedged
    investment, the  hedge  would  not  be fully  successful.  Such  a  lack  of
    correlation  might  occur  due to  factors  unrelated  to the  value  of the
    investments being  hedged, such  as speculative  or other  pressures on  the
    markets  in which  the hedging  instrument is  traded. The  effectiveness of
    hedges using hedging  instruments on indices  will depend on  the degree  of
    correlation  between price movements in the index and price movements in the
    investments being hedged.
 
        (3) Hedging strategies, if successful, can reduce risk of loss by wholly
    or partially offsetting the negative  effect of unfavorable price  movements
    in the investments being hedged. However, hedging strategies can also reduce
    opportunity  for gain by  offsetting the positive  effect of favorable price
    movements in the  hedged investments.  For example, if  an Underlying  Theme
    Portfolio  entered into  a short hedge  because the  Sub-adviser projected a
    decline in the price
 
                   Statement of Additional Information Page 8
<PAGE>
                             AIM GLOBAL TRENDS FUND
    of a security in the Underlying  Theme Portfolio's portfolio, and the  price
    of  that security  increased instead, the  gain from that  increase might be
    wholly or  partially  offset  by a  decline  in  the price  of  the  hedging
    instrument.  Moreover, if  the price of  the hedging  instrument declined by
    more than the increase  in the price of  the security, the Underlying  Theme
    Portfolio  could suffer  a loss. In  either such case,  the Underlying Theme
    Portfolio would have been in a better position had it not hedged at all.
 
        (4) As described below, an Underlying Theme Portfolio might be  required
    to  maintain assets as "cover," maintain  segregated accounts or make margin
    payments when it  takes positions  in instruments  involving obligations  to
    third  parties  (I.E., instruments  other  than purchased  options).  If the
    Underlying Theme Portfolio were  unable to close out  its positions in  such
    instruments,  it might  be required to  continue to maintain  such assets or
    accounts or make such  payments until the position  expired or matured.  The
    requirements might impair the Underlying Theme Portfolio's ability to sell a
    portfolio  security or make an investment at  a time when it would otherwise
    be favorable to do so, or require that the Underlying Theme Portfolio sell a
    portfolio  security  at  a   disadvantageous  time.  The  Underlying   Theme
    Portfolio's  ability  to close  out  a position  in  an instrument  prior to
    expiration or maturity depends on the existence of a liquid secondary market
    or, in the  absence of such  a market,  the ability and  willingness of  the
    other  party to the transaction ("contra party") to enter into a transaction
    closing out the position. Therefore, there is no assurance that any position
    can be closed out at  a time and price that  is favorable to the  Underlying
    Theme Portfolio.
 
WRITING CALL OPTIONS
Each  Underlying Theme  Portfolio may write  (sell) call  options on securities,
indices and currencies. Call options generally will be written on securities and
currencies that, in the opinion of the Sub-adviser, are not expected to make any
major price moves in the near future but that, over the long term, are deemed to
be attractive investments for the Underlying Theme Portfolios.
 
A call option  gives the  holder (buyer)  the right  to purchase  a security  or
currency  at a specified price (the exercise  price) at any time until (American
style) or on (European style) a certain  date (the expiration date). So long  as
the  obligation of  the writer  of a  call option  continues, he  or she  may be
assigned an exercise  notice, requiring  him or  her to  deliver the  underlying
security  or currency  against payment  of the  exercise price.  This obligation
terminates upon the expiration of the call option, or such earlier time at which
the writer  effects  a closing  purchase  transaction by  purchasing  an  option
identical to that previously sold.
 
Portfolio  securities or currencies on which call options may be written will be
purchased solely on the basis of investment considerations consistent with  each
Underlying  Theme Portfolio's investment objective.  When writing a call option,
an Underlying  Theme  Portfolio,  in  return  for  the  premium,  gives  up  the
opportunity  for  profit from  a price  increase in  the underlying  security or
currency above the exercise price, and retains the risk of loss should the price
of the  security  or  currency  decline.  Unlike  one  who  owns  securities  or
currencies  not  subject to  an  option, an  Underlying  Theme Portfolio  has no
control over  when it  may be  required  to sell  the underlying  securities  or
currencies,  since  most options  may  be exercised  at  any time  prior  to the
option's expiration. If  a call option  that an Underlying  Theme Portfolio  has
written  expires, it will realize a gain  in the amount of the premium; however,
such gain may  be offset  by a  decline in the  market value  of the  underlying
security  or currency during the option period. If the call option is exercised,
the Underlying Theme Portfolio will realize a gain or loss from the sale of  the
underlying  security  or currency,  which  will be  increased  or offset  by the
premium received. The Underlying Theme Portfolios do not consider a security  or
currency  covered by a call option to be "pledged" as that term is used in their
policies that limit the pledging or mortgaging of their assets.
 
Writing call options can serve as a limited short hedge because declines in  the
value  of the  hedged investment would  be offset  to the extent  of the premium
received  for  writing  the  option.  However,  if  the  security  or   currency
appreciates to a price higher than the exercise price of the call option, it can
be  expected that the option will be exercised and an Underlying Theme Portfolio
will be obligated  to sell  the security  or currency  at less  than its  market
value.
 
The  premium  that an  Underlying Theme  Portfolio receives  for writing  a call
option is deemed to constitute  the market value of  an option. The premium  the
Underlying Theme Portfolio will receive from writing a call option will reflect,
among  other things, the current market  price of the underlying investment, the
relationship of the exercise  price to such market  price, the historical  price
volatility of the underlying investment, and the length of the option period. In
determining  whether a particular call option should be written, the Sub-adviser
will consider the reasonableness of  the anticipated premium and the  likelihood
that a liquid secondary market will exist for those options.
 
Closing  transactions  will be  effected  in order  to  realize a  profit  on an
outstanding call  option, to  prevent an  underlying security  or currency  from
being  called or  to permit  the sale  of the  underlying security  or currency.
Furthermore, effecting a
 
                   Statement of Additional Information Page 9
<PAGE>
                             AIM GLOBAL TRENDS FUND
closing transaction will permit an  Underlying Theme Portfolio to write  another
call  option  on the  underlying security  or currency  with either  a different
exercise price or expiration date, or both.
 
Each Underlying Theme Portfolio  will pay transaction  costs in connection  with
the  writing  of  options  and  in  entering  into  closing  purchase contracts.
Transaction costs relating to  options activity are  normally higher than  those
applicable to purchases and sales of portfolio securities.
 
The  exercise price of the  options may be below, equal  to or above the current
market values of the  underlying securities, indices or  currencies at the  time
the  options are written. From  time to time, an  Underlying Theme Portfolio may
purchase an underlying security or currency for delivery in accordance with  the
exercise of an option, rather than delivering such security or currency from its
portfolio. In such cases, additional costs will be incurred.
 
An  Underlying Theme  Portfolio will  realize a  profit or  loss from  a closing
purchase  transaction  if  the  cost  of  the  transaction  is  less  or   more,
respectively,  than  the  premium  received  from  writing  the  option. Because
increases in the market price of a call option generally will reflect  increases
in  the market price of the underlying  security or currency, any loss resulting
from the repurchase of a call option is likely to be offset in whole or in  part
by  appreciation of the  underlying security or currency  owned by an Underlying
Theme Portfolio.
 
WRITING PUT OPTIONS
Each Underlying Theme Portfolio may write put options on securities, indices and
currencies. A put option gives  the purchaser of the  option the right to  sell,
and  the  writer (seller)  the  obligation to  buy,  the underlying  security or
currency at  the  exercise  price at  any  time  until (American  style)  or  on
(European  style) the  expiration date.  The operation  of put  options in other
respects, including their related risks and rewards, is substantially  identical
to that of call options.
 
An Underlying Theme Portfolio generally would write put options in circumstances
where the Sub-adviser wishes to purchase the underlying security or currency for
the  Underlying Theme  Portfolio's holdings  at a  price lower  than the current
market price of  the security or  currency. In such  event, an Underlying  Theme
Portfolio  would write a  put option at  an exercise price  that, reduced by the
premium received on the option, reflects the  lower price it is willing to  pay.
Since  the  Underlying  Theme  Portfolio would  also  receive  interest  on debt
securities or currencies maintained to cover  the exercise price of the  option,
this  technique could be used to enhance current return during periods of market
uncertainty. The risk in such  a transaction would be  that the market price  of
the  underlying security or currency would decline below the exercise price less
the premium received.
 
Writing put options can serve as a  limited long hedge because increases in  the
value  of the  hedged investment would  be offset  to the extent  of the premium
received  for  writing  the  option.  However,  if  the  security  or   currency
depreciates  to a price lower than the exercise  price of the put option, it can
be expected  that the  put option  will  be exercised  and an  Underlying  Theme
Portfolio will be obligated to purchase the security or currency at greater than
its market value.
 
PURCHASING PUT OPTIONS
Each  Underlying Theme Portfolio may purchase put options on securities, indices
and currencies. As  the holder of  a put option,  an Underlying Theme  Portfolio
would have the right to sell the underlying security or currency at the exercise
price  at any time until (American style)  or on (European style) the expiration
date. An Underlying  Theme Portfolio  may enter into  closing sale  transactions
with  respect to  such options,  exercise such option  or permit  such option to
expire.
 
Each Underlying  Theme Portfolio  may purchase  a put  option on  an  underlying
security  or currency ("protective put") owned by the Underlying Theme Portfolio
in order to protect against an anticipated decline in the value of the  security
or  currency. Such hedge protection is provided  only during the life of the put
option when the Underlying Theme Portfolio, as the holder of the put option,  is
able  to sell  the underlying  security or  currency at  the put  exercise price
regardless  of  any  decline  in  the  underlying  security's  market  price  or
currency's  exchange  value.  The  premium  paid  for  the  put  option  and any
transaction costs would reduce any  profit otherwise available for  distribution
when the security or currency is eventually sold.
 
An  Underlying Theme Portfolio may  also purchase put options  at a time when it
does not own the underlying security or currency. By purchasing put options on a
security or currency it does not  own, that Underlying Theme Portfolio seeks  to
benefit  from  a decline  in  the market  price  of the  underlying  security or
currency. If the put option is not sold when it has remaining value, and if  the
market  price of the underlying security or currency remains equal to or greater
than the exercise price during the life of the put option, the Underlying  Theme
Portfolio  will lose its entire  investment in the put  option. In order for the
purchase of a put option  to be profitable, the  market price of the  underlying
security or currency must decline sufficiently below the exercise price to cover
the  premium and transaction costs,  unless the put option  is sold in a closing
sale transaction.
 
                  Statement of Additional Information Page 10
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                             AIM GLOBAL TRENDS FUND
 
PURCHASING CALL OPTIONS
Each Underlying Theme Portfolio may purchase call options on securities, indices
and currencies. As the  holder of a call  option, an Underlying Theme  Portfolio
would  have the  right to  purchase the underlying  security or  currency at the
exercise price at  any time until  (American style) or  on (European style)  the
expiration  date.  An Underlying  Theme Portfolio  may  enter into  closing sale
transactions with respect to such options, exercise such options or permit  such
options to expire.
 
Call  options may be purchased by an  Underlying Theme Portfolio for the purpose
of acquiring the underlying security or currency for its portfolio. Utilized  in
this  fashion, the  purchase of  call options  would enable  an Underlying Theme
Portfolio to acquire the security or currency at the exercise price of the  call
option  plus the premium paid. At times,  the net cost of acquiring the security
or currency in this manner may be  less than the cost of acquiring the  security
or  currency directly. This technique may also  be useful to an Underlying Theme
Portfolio in purchasing a large block of securities that would be more difficult
to acquire by direct market purchases. So  long as it holds such a call  option,
rather  than the  underlying security or  currency itself,  the Underlying Theme
Portfolio is partially protected from any unexpected decline in the market price
of the underlying security or currency and, in such event, could allow the  call
option  to expire, incurring a  loss only to the extent  of the premium paid for
the option.
 
An Underlying  Theme Portfolio  may  also purchase  call options  on  underlying
securities  or currencies it owns to avoid realizing losses that would result in
a reduction  of its  current  return. For  example,  where an  Underlying  Theme
Portfolio has written a call option on an underlying security or currency having
a  current market value  below the price  at which it  purchased the security or
currency, an increase in the  market price could result  in the exercise of  the
call  option written by the Underlying Theme  Portfolio and the realization of a
loss on the underlying security  or currency. Accordingly, the Underlying  Theme
Portfolio  could  purchase a  call  option on  the  same underlying  security or
currency, which could be exercised to fulfill its delivery obligations under its
written call (if  it is  exercised). This  strategy could  allow the  Underlying
Theme  Portfolio to avoid selling  the portfolio security or  currency at a time
when it has an  unrealized loss; however, the  Underlying Theme Portfolio  would
have to pay a premium to purchase the call option plus transaction costs.
 
Aggregate  premiums paid  for put and  call options  will not exceed  5% of each
Underlying Theme Portfolio's total assets at the time of each purchase.
 
An Underlying Theme Portfolio  may attempt to  accomplish objectives similar  to
those  involved in using Forward Contracts by  purchasing put or call options on
currencies. A put option  gives an Underlying Theme  Portfolio as purchaser  the
right  (but not the  obligation) to sell  a specified amount  of currency at the
exercise price at  any time until  (American style) or  on (European style)  the
expiration date of the option. A call option gives an Underlying Theme Portfolio
as  purchaser the right (but not the  obligation) to purchase a specified amount
of currency at  the exercise  price at  any time  until (American  style) or  on
(European  style)  the  expiration  date  of  the  option.  An  Underlying Theme
Portfolio might purchase a currency put  option, for example, to protect  itself
against  a  decline in  the dollar  value of  a  currency in  which it  holds or
anticipates holding securities. If the  currency's value should decline  against
the dollar, the loss in currency value should be offset, in whole or in part, by
an increase in the value of the put. If the value of the currency instead should
rise  against the  dollar, any  gain to an  Underlying Theme  Portfolio would be
reduced by the premium it  had paid for the put  option. A currency call  option
might  be purchased, for example,  in anticipation of, or  to protect against, a
rise in the value against the dollar of a currency in which an Underlying  Theme
Portfolio anticipates purchasing securities.
 
Options  may  be either  listed  on an  exchange  or traded  in over-the-counter
("OTC") markets. Listed options are third-party contracts (I.E., performance  of
the  obligations of the  purchaser and seller  is guaranteed by  the exchange or
clearing corporation) and have standardized strike prices and expiration  dates.
OTC options are two-party contracts with negotiated strike prices and expiration
dates.  An Underlying Theme Portfolio will not  purchase an OTC option unless it
believes that  daily valuations  for such  options are  readily obtainable.  OTC
options  differ from exchange-traded options in  that OTC options are transacted
with dealers directly and not  through a clearing corporation (which  guarantees
performance).  Consequently, there is  a risk of  non-performance by the dealer.
Since no exchange is involved, OTC options are valued on the basis of an average
of the last bid prices obtained from  dealers, unless a quotation from only  one
dealer is available, in which case only that dealer's price will be used. In the
case  of OTC options, there  can be no assurance  that a liquid secondary market
will exist for any particular option at any specific time.
 
   
The staff of the SEC considers purchased OTC options to be illiquid  securities.
An  Underlying  Theme Portfolio  may also  sell OTC  options and,  in connection
therewith, segregate assets or cover its obligations with respect to OTC options
written by it. The assets used as cover for OTC options written by an Underlying
Theme Portfolio will be considered illiquid  unless the OTC options are sold  to
qualified  dealers who agree that the  Underlying Theme Portfolio may repurchase
any OTC option it writes  at a maximum price to  be calculated by a formula  set
forth in the option agreement.
    
 
                  Statement of Additional Information Page 11
<PAGE>
                             AIM GLOBAL TRENDS FUND
The  cover  for  an  OTC  option written  subject  to  this  procedure  would be
considered illiquid only to the extent  that the maximum repurchase price  under
the formula exceeds the intrinsic value of the option.
 
   
An  Underlying Theme Portfolio's ability to establish and close out positions in
exchange-listed options  depends  on the  existence  of a  liquid  market.  Each
Underlying   Theme   Portfolio  intends   to  purchase   or  write   only  those
exchange-traded options for which there  appear to be liquid secondary  markets.
However,  there  can  be no  assurance  that such  a  market will  exist  at any
particular time.  Closing transactions  can  be made  for  OTC options  only  by
negotiating  directly with the contra party or by a transaction in the secondary
market if any such  market exists. Although an  Underlying Theme Portfolio  will
enter  into OTC options only with contra parties that are expected to be capable
of entering into closing  transactions with it, there  is no assurance that  the
Underlying  Theme Portfolio  will in  fact be  able to  close out  an OTC option
position at a favorable price prior to expiration. In the event of insolvency of
the contra party, the Underlying Theme Portfolio might be unable to close out an
OTC option position at any time prior to its expiration.
    
 
INDEX OPTIONS
Puts and calls on indices are similar to puts and calls on securities or futures
contracts except that all settlements  are in cash and  gain or loss depends  on
changes  in the index in question (and thus on price movements in the securities
market or a particular market sector  generally) rather than on price  movements
in  individual  securities  or  futures  contracts.  When  an  Underlying  Theme
Portfolio writes a  call on an  index, it  receives a premium  and agrees  that,
prior  to the expiration date,  the purchaser of the  call, upon exercise of the
call, will receive from the Underlying Theme Portfolio an amount of cash if  the
closing  level of  the index upon  which the call  is based is  greater than the
exercise price  of the  call. The  amount of  cash is  equal to  the  difference
between  the closing price of the index and the exercise price of the call times
a specified multiple (the "multiplier"), which determines the total dollar value
for each point  of such difference.  When an Underlying  Theme Portfolio buys  a
call  on an index, it pays a premium and  has the same rights as to such call as
are indicated above. When an Underlying Theme Portfolio buys a put on an  index,
it  pays a premium and  has the right, prior to  the expiration date, to require
the seller of  the put, upon  the Underlying Theme  Portfolio's exercise of  the
put,  to deliver  to the  Underlying Theme  Portfolio an  amount of  cash if the
closing level of the index upon which the put is based is less than the exercise
price of the  put, which  amount of  cash is  determined by  the multiplier,  as
described  above for calls. When the Underlying  Theme Portfolio writes a put on
an index, it receives a  premium and the purchaser has  the right, prior to  the
expiration  date, to require the Underlying Theme  Portfolio to deliver to it an
amount of cash equal to  the difference between the  closing level of the  index
and  the exercise price times the multiplier,  if the closing level is less than
the exercise price.
 
The risks  of  investment  in index  options  may  be greater  than  options  on
securities.  Because index options are settled in cash, when an Underlying Theme
Portfolio writes  a call  on  an index  it cannot  provide  in advance  for  its
potential  settlement  obligations  by  acquiring  and  holding  the  underlying
securities. An Underlying Theme Portfolio can offset some of the risk of writing
a call index option  position by holding a  diversified portfolio of  securities
similar  to those on which the underlying index is based. However, an Underlying
Theme Portfolio cannot,  as a  practical matter,  acquire and  hold a  portfolio
containing  exactly the same securities as underlie  the index and, as a result,
bears a risk that the value of the  securities held will vary from the value  of
the index.
 
Even if an Underlying Theme Portfolio could assemble a securities portfolio that
exactly  reproduced the composition of the  underlying index, it still would not
be fully covered from a risk standpoint because of the "timing risk" inherent in
writing index options.  When an index  option is exercised,  the amount of  cash
that  the holder is entitled to receive  is determined by the difference between
the exercise price and the  closing index level on the  date when the option  is
exercised.  As with other  kinds of options, the  Underlying Theme Portfolio, as
the call writer, will not know that it has been assigned until the next business
day at the  earliest. The  time lag between  exercise and  notice of  assignment
poses  no  risk  for the  writer  of a  covered  call on  a  specific underlying
security, such as  common stock,  because there  the writer's  obligation is  to
deliver  the underlying security, not to pay its value as of a fixed time in the
past. So long as the writer already owns the underlying security, it can satisfy
its settlement obligations by simply delivering it, and the risk that its  value
may  have declined since the exercise date is borne by the exercising holder. In
contrast, even if  the writer  of an index  call holds  securities that  exactly
match  the composition of the  underlying index, it will  not be able to satisfy
its assignment obligations by delivering those securities against payment of the
exercise price. Instead, it will be required  to pay cash in an amount based  on
the  closing index value on the exercise date; and by the time it learns that it
has been assigned, the index may have declined, with a corresponding decline  in
the  value  of  its securities  portfolio.  This  "timing risk"  is  an inherent
limitation on the ability of index call writers to cover their risk exposure  by
holding securities positions.
 
If  an Underlying  Theme Portfolio  purchases an  index option  and exercises it
before the closing index value for that day is available, it runs the risk  that
the  level of  the underlying  index may subsequently  change. If  such a change
causes the  exercised  option to  fall  out-of-the-money, the  Underlying  Theme
Portfolio will be required to pay the difference between the closing index value
and  the exercise price of  the option (times the  applicable multiplier) to the
assigned writer.
 
                  Statement of Additional Information Page 12
<PAGE>
                             AIM GLOBAL TRENDS FUND
 
INTEREST RATE, CURRENCY AND STOCK INDEX FUTURES CONTRACTS
Each Underlying Theme Portfolio may enter into interest rate, currency or  stock
index  futures contracts (collectively,  "Futures" or "Futures  Contracts") as a
hedge against changes in prevailing levels of interest rates, currency  exchange
rates or stock price levels, respectively, in order to establish more definitely
the effective return on securities or currencies held or intended to be acquired
by  it. An Underlying Theme Portfolio's hedging  may include sales of Futures as
an offset  against the  effect  of expected  increases  in interest  rates,  and
decreases  in currency exchange rates and stock prices, and purchases of Futures
as an offset  against the  effect of expected  declines in  interest rates,  and
increases in currency exchange rates or stock prices.
 
Each  Underlying Theme Portfolio only will enter into Futures Contracts that are
traded on  futures  exchanges and  are  standardized  as to  maturity  date  and
underlying  financial instrument. Futures  exchanges and trading  thereon in the
United States are regulated  under the Commodity Exchange  Act by the  Commodity
Futures  Trading Commission  ("CFTC"). Futures  are exchanged  in London  at the
London International Financial Futures Exchange.
 
Although techniques other than sales and purchases of Futures Contracts could be
used to  reduce  an Underlying  Theme  Portfolio's exposure  to  interest  rate,
currency  exchange  rate  and  stock market  fluctuations,  an  Underlying Theme
Portfolio may be able to hedge its exposure more effectively and at a lower cost
through using Futures Contracts.
 
A Futures Contract provides  for the future  sale by one  party and purchase  by
another party of a specified amount of a specific financial instrument (security
or currency) for a specified price at a designated date, time and place. A stock
index Futures Contract provides for the delivery, at a designated date, time and
place,  of  an amount  of  cash equal  to a  specified  dollar amount  times the
difference between the stock index value at the close of trading on the contract
and the price at  which the Futures Contract  is originally struck; no  physical
delivery  of stocks  comprising the index  is made. Brokerage  fees are incurred
when a  Futures  Contract  is  bought  or sold,  and  margin  deposits  must  be
maintained at all times the Futures Contract is outstanding.
 
Although  Futures Contracts typically require future delivery of and payment for
financial instruments or  currencies, Futures Contracts  usually are closed  out
before  the delivery date. Closing out an open Futures Contract sale or purchase
is effected by entering  into an offsetting Futures  Contract purchase or  sale,
respectively,   for  the  same  aggregate  amount  of  the  identical  financial
instrument or currency and  the same delivery date.  If the offsetting  purchase
price  is  less than  the original  sale price,  the Underlying  Theme Portfolio
realizes a gain; if it is more, the Underlying Theme Portfolio realizes a  loss.
Conversely,  if the  offsetting sale  price is  more than  the original purchase
price, the  Underlying Theme  Portfolio realizes  a  gain; if  it is  less,  the
Underlying  Theme Portfolio realizes a loss.  The transaction costs must also be
included in these  calculations. There  can be  no assurance,  however, that  an
Underlying  Theme Portfolio will be able to enter into an offsetting transaction
with respect  to a  particular Futures  Contract  at a  particular time.  If  an
Underlying  Theme Portfolio is not able to enter into an offsetting transaction,
it will continue to be required to  maintain the margin deposits on the  Futures
Contract.
 
As  an example of an offsetting transaction, the contractual obligations arising
from the sale of one Futures Contract of September Deutschemarks on an  exchange
may  be fulfilled  at any  time before  delivery under  the Futures  Contract is
required (I.E., on a specified date  in September, the "delivery month") by  the
purchase  of another  Futures Contract  of September  Deutschemarks on  the same
exchange. In  such instance,  the  difference between  the  price at  which  the
Futures  Contract was sold and the price paid for the offsetting purchase, after
allowance for transaction costs, represents the profit or loss to the Underlying
Theme Portfolio.
 
Each Underlying Theme Portfolio's Futures transactions will be entered into  for
hedging  purposes  only; that  is,  Futures Contracts  will  be sold  to protect
against a decline in  the price of securities  or currencies that an  Underlying
Theme  Portfolio  owns, or  Futures Contracts  will be  purchased to  protect an
Underlying Theme Portfolio  against an increase  in the price  of securities  or
currencies it has committed to purchase or expects to purchase.
 
"Margin"  with respect to Futures Contracts is  the amount of funds that must be
deposited by an Underlying Theme Portfolio in order to initiate Futures  trading
and maintain its open positions in Futures Contracts. A margin deposit made when
the  Futures Contract is  entered into ("initial margin")  is intended to ensure
the Underlying Theme  Portfolio's performance  under the  Futures Contract.  The
margin  required for  a particular  Futures Contract is  set by  the exchange on
which the Futures Contract is traded and may be significantly modified from time
to time by the exchange during the term of the Futures Contract.
 
Subsequent  payments,  called  "variation  margin,"  to  and  from  the  futures
commission  merchant through which  the Underlying Theme  Portfolio entered into
the Futures  Contract  will be  made  on  a daily  basis  as the  price  of  the
underlying
 
                  Statement of Additional Information Page 13
<PAGE>
                             AIM GLOBAL TRENDS FUND
security,  currency or index fluctuates making the Futures Contract more or less
valuable, a process known as marking-to-market.
 
    RISKS OF  USING  FUTURES CONTRACTS.  The  prices of  Futures  Contracts  are
volatile  and  are influenced  by, among  other  things, actual  and anticipated
changes in  interest rates  and currency  exchange rates,  and in  stock  market
movements,  which  in turn  are  affected by  fiscal  and monetary  policies and
national and international political and economic events.
 
There is a risk  of imperfect correlation between  changes in prices of  Futures
Contracts  and prices  of the  securities or  currencies in  an Underlying Theme
Portfolio's portfolio being  hedged. The degree  of imperfection of  correlation
depends  upon circumstances such as variations  in speculative market demand for
Futures and  for securities  or currencies,  including technical  influences  in
Futures  trading; and differences between the financial instruments being hedged
and the  instruments underlying  the standard  Futures Contracts  available  for
trading.  A  decision of  whether,  when and  how  to hedge  involves  skill and
judgment, and even  a well-conceived hedge  may be unsuccessful  to some  degree
because of unexpected market behavior or interest or currency rate trends.
 
Because  of  the  low  margin deposits  required,  Futures  trading  involves an
extremely high  degree  of leverage.  As  a  result, a  relatively  small  price
movement  in a Futures Contract may result in immediate and substantial loss, as
well as gain, to the investor. For example,  if at the time of purchase, 10%  of
the  value of  the Futures  Contract is  deposited as  margin, a  subsequent 10%
decrease in the value of  the Futures Contract would result  in a total loss  of
the  margin  deposit, before  any deduction  for the  transaction costs,  if the
account were then closed  out. A 15%  decrease would result in  a loss equal  to
150%  of the original margin  deposit, if the Futures  Contract were closed out.
Thus, a purchase or sale of a Futures Contract may result in losses in excess of
the amount invested in the Futures Contract.
 
Most U.S. Futures exchanges limit the amount of fluctuation permitted in Futures
Contract and options on  Futures Contracts prices during  a single trading  day.
The  daily limit  establishes the  maximum amount  that the  price of  a Futures
Contract or option may vary either up or down from the previous day's settlement
price at the end of a trading session. Once the daily limit has been reached  in
a  particular type of Futures Contract or option,  no trades may be made on that
day at a price beyond  that limit. The daily  limit governs only price  movement
during  a particular trading day and  therefore does not limit potential losses,
because the limit may prevent the liquidation of unfavorable positions.  Futures
Contracts  and  option prices  have occasionally  moved to  the daily  limit for
several consecutive trading days with  little or no trading, thereby  preventing
prompt  liquidation  of positions  and  subjecting some  traders  to substantial
losses.
 
If an Underlying Theme Portfolio were unable to liquidate a Futures or option on
Futures position  due  to  the absence  of  a  liquid secondary  market  or  the
imposition  of price limits,  it could incur  substantial losses. The Underlying
Theme Portfolio would continue to be subject to market risk with respect to  the
position.  In addition, except in the  case of purchased options, the Underlying
Theme Portfolio would  continue to be  required to make  daily variation  margin
payments  and might  be required  to maintain the  position being  hedged by the
Future or option or to maintain cash or securities in a segregated account.
 
Certain characteristics  of the  Futures  market might  increase the  risk  that
movements  in the prices  of Futures Contracts  or options on  Futures might not
correlate perfectly  with  movements in  the  prices of  the  investments  being
hedged.  For example,  all participants  in the  Futures and  options on Futures
markets are subject to  daily variation margin calls  and might be compelled  to
liquidate  Futures  or  options on  Futures  positions whose  prices  are moving
unfavorably to avoid being  subject to further  calls. These liquidations  could
increase  price  volatility  of the  instruments  and distort  the  normal price
relationship between the Futures  or options and  the investments being  hedged.
Also, because initial margin deposit requirements in the Futures market are less
onerous  than  margin requirements  in the  securities  markets, there  might be
increased  participation   by  speculators   in   the  Futures   markets.   This
participation  also  might  cause  temporary  price  distortions.  In  addition,
activities of large traders in both the Futures and securities markets involving
arbitrage, "program trading"  and other  investment strategies  might result  in
temporary price distortions.
 
OPTIONS ON FUTURES CONTRACTS
Options  on Futures Contracts are similar to options on securities or currencies
except that options on Futures Contracts give the purchaser the right, in return
for the  premium paid,  to  assume a  position in  a  Futures Contract  (a  long
position if the option is a call and a short position if the option is a put) at
a  specified exercise price  at any time  during the period  of the option. Upon
exercise of the option, the  delivery of the Futures  position by the writer  of
the  option to the holder  of the option will be  accompanied by delivery of the
accumulated balance in the writer's Futures margin account, which represents the
amount by which the market price  of the Futures Contract, at exercise,  exceeds
(in  the case of  a call) or  is less than (in  the case of  a put) the exercise
price of the option on  the Futures Contract. If an  option is exercised on  the
last trading day prior to the expiration date of the option, the settlement will
be  made entirely in cash equal to  the difference between the exercise price of
the option and  the closing level  of the securities,  currencies or index  upon
which the Futures
 
                  Statement of Additional Information Page 14
<PAGE>
                             AIM GLOBAL TRENDS FUND
Contract  is based  on the  expiration date. Purchasers  of options  who fail to
exercise their options prior to the exercise  date suffer a loss of the  premium
paid.
 
The  purchase of  call options  on Futures can  serve as  a long  hedge, and the
purchase of put  options on Futures  can serve  as a short  hedge. Writing  call
options  on Futures can serve as a  limited short hedge, and writing put options
on Futures can serve as a limited  long hedge, using a strategy similar to  that
used for writing options on securities, foreign currencies or indices.
 
If an Underlying Theme Portfolio writes an option on a Futures Contract, it will
be  required to  deposit initial and  variation margin  pursuant to requirements
similar to those  applicable to  Futures Contracts. Premiums  received from  the
writing  of an option on  a Futures Contract are  included in the initial margin
deposit.
 
An Underlying  Theme Portfolio  may seek  to  close out  an option  position  by
selling  an  option  covering the  same  Futures  Contract and  having  the same
exercise price  and expiration  date. The  ability to  establish and  close  out
positions  on such options is  subject to the maintenance  of a liquid secondary
market.
 
LIMITATIONS ON  USE  OF FUTURES,  OPTIONS  ON  FUTURES AND  CERTAIN  OPTIONS  ON
CURRENCIES
To  the extent that an Underlying Theme Portfolio enters into Futures Contracts,
options on  Futures Contracts  and options  on foreign  currencies traded  on  a
CFTC-regulated  exchange, in each case other than for bona fide hedging purposes
(as defined by the CFTC), the aggregate initial margin and premiums required  to
establish   those  positions  (excluding   the  amount  by   which  options  are
"in-the-money") will not exceed  5% of the liquidation  value of the  Underlying
Theme  Portfolio, after  taking into  account unrealized  profits and unrealized
losses on any  contracts it has  entered into. In  general, a call  option on  a
Futures  Contract  is  "in-the-money" if  the  value of  the  underlying Futures
Contract exceeds the strike, I.E., exercise, price of the call; a put option  on
a  Futures Contract  is "in-the-money"  if the  value of  the underlying Futures
Contract is exceeded  by the  strike price  of the  put. This  guideline may  be
modified  by the applicable  Board, without a  shareholder vote. This limitation
does not limit the percentage of an Underlying Theme Portfolio's assets at  risk
to 5%.
 
FORWARD CONTRACTS
A  Forward Contract is an obligation, usually arranged with a commercial bank or
other currency dealer, to purchase or  sell a currency against another  currency
at  a future date and  price as agreed upon by  the parties. An Underlying Theme
Portfolio either may accept or make delivery of the currency at the maturity  of
the  Forward Contract.  An Underlying  Theme Portfolio  may also,  if its contra
party agrees prior to maturity, enter  into a closing transaction involving  the
purchase or sale of an offsetting contract.
 
An  Underlying  Theme  Portfolio  engages in  forward  currency  transactions in
anticipation of, or to protect  itself against, fluctuations in exchange  rates.
An  Underlying Theme Portfolio might sell a particular foreign currency forward,
for example,  when  it  holds  bonds  denominated  in  a  foreign  currency  but
anticipates,  and  seeks to  be  protected against,  a  decline in  the currency
against the U.S. dollar. Similarly, an Underlying Theme Portfolio might sell the
U.S. dollar  forward  when  it  holds bonds  denominated  in  U.S.  dollars  but
anticipates,  and seeks to  be protected against,  a decline in  the U.S. dollar
relative to  other  currencies. Further,  an  Underlying Theme  Portfolio  might
purchase  a currency forward to "lock in" the price of securities denominated in
that currency that it anticipates purchasing.
 
Forward Contracts are traded in the interbank market conducted directly  between
currency traders (usually large commercial banks) and their customers. A Forward
Contract generally has no deposit requirement, and no commissions are charged at
any  stage  for trades.  Each Underlying  Theme Portfolio  will enter  into such
Forward Contracts with major  U.S. or foreign banks  and securities or  currency
dealers in accordance with guidelines approved by the applicable Board.
 
An  Underlying  Theme Portfolio  may enter  into  Forward Contracts  either with
respect to specific transactions or with respect to overall investments of  that
Underlying Theme Portfolio. The precise matching of the Forward Contract amounts
and  the value of specific securities generally will not be possible because the
future value  of  such  securities  in  foreign  currencies  will  change  as  a
consequence  of market  movements in the  value of those  securities between the
date the Forward Contract is entered into and the date it matures.  Accordingly,
it  may be necessary for that  Underlying Theme Portfolio to purchase additional
foreign currency on the spot (I.E., cash)  market (and bear the expense of  such
purchase) if the market value of the security is less than the amount of foreign
currency  the  Underlying  Theme Portfolio  is  obligated  to deliver  and  if a
decision is made to sell the security and make delivery of the foreign currency.
Conversely, it may be necessary to sell  on the spot market some of the  foreign
currency  the Underlying Theme Portfolio is obligated to deliver. The projection
of  short-term  currency  market  movements  is  extremely  difficult,  and  the
successful  execution  of a  short-term  hedging strategy  is  highly uncertain.
Forward Contracts involve the risk that anticipated currency movements will  not
be predicted accurately, causing an Underlying Theme Portfolio to sustain losses
on these contracts and transaction costs.
 
                  Statement of Additional Information Page 15
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                             AIM GLOBAL TRENDS FUND
 
At  or before the maturity  of a Forward Contract  requiring an Underlying Theme
Portfolio to sell a  currency, it either  may sell a security  and use the  sale
proceeds  to make delivery of the currency or retain the security and offset its
contractual obligation to deliver the  currency by purchasing a second  contract
pursuant  to which it will obtain, on the same maturity date, the same amount of
the currency that  it is obligated  to deliver. Similarly,  an Underlying  Theme
Portfolio  may close out a Forward Contract requiring it to purchase a specified
currency by  entering  into a  second  contract,  if its  contra  party  agrees,
entitling  it to sell the same amount of  the same currency on the maturity date
of the first  contract. An Underlying  Theme Portfolio would  realize a gain  or
loss  as a  result of  entering into such  an offsetting  Forward Contract under
either circumstance  to  the extent  the  exchange  rate or  rates  between  the
currencies  involved moved between the execution dates of the first contract and
the offsetting contract.
 
The cost  to an  Underlying Theme  Portfolio of  engaging in  Forward  Contracts
varies  with factors such as the currencies involved, the length of the contract
period and the market conditions then prevailing. Because Forward Contracts  are
usually  entered into on a principal basis, no fees or commissions are involved.
The use of Forward  Contracts does not eliminate  fluctuations in the prices  of
the  underlying  securities an  Underlying Theme  Portfolio  owns or  intends to
acquire, but it does establish a rate of exchange in advance. In addition, while
Forward Contract sales limit the risk of loss  due to a decline in the value  of
the  hedged currencies,  they also  limit any  potential gain  that might result
should the value of the currencies increase.
 
FOREIGN CURRENCY STRATEGIES -- SPECIAL CONSIDERATIONS
An Underlying Theme Portfolio may use options on foreign currencies, Futures  on
foreign  currencies,  options  on  Futures  on  foreign  currencies  and Forward
Contracts to hedge against movements in the values of the foreign currencies  in
which the Underlying Theme Portfolio's securities are denominated. Such currency
hedges  can protect  against price movements  in a security  that the Underlying
Theme Portfolio owns or intends to  acquire that are attributable to changes  in
the  value  of the  currency in  which it  is denominated.  Such hedges  do not,
however, protect against price movements in the securities that are attributable
to other causes.
 
An Underlying Theme Portfolio might seek  to hedge against changes in the  value
of  a particular currency  when no Futures Contract,  Forward Contract or option
involving that currency is available or one of such contracts is more  expensive
than  certain other contracts. In such cases, the Underlying Theme Portfolio may
hedge against price movements  in that currency by  entering into a contract  on
another  currency or basket  of currencies, the values  of which the Sub-adviser
believes will have  a positive correlation  to the value  of the currency  being
hedged.  The risk that movements in the price of the contract will not correlate
perfectly with movements in the price of the currency being hedged is  magnified
when this strategy is used.
 
The  value of Futures Contracts, options on Futures Contracts, Forward Contracts
and options  on  foreign currencies  depends  on  the value  of  the  underlying
currency  relative  to the  U.S. dollar.  Because foreign  currency transactions
occurring in the  interbank market  might involve  substantially larger  amounts
than  those  involved in  the  use of  Futures  Contracts, Forward  Contracts or
options, the Underlying Theme Portfolio could be disadvantaged by dealing in the
odd lot market (generally  consisting of transactions of  less than $1  million)
for the underlying foreign currencies at prices that are less favorable than for
round lots.
 
There is no systematic reporting of last sale information for foreign currencies
or  any  regulatory requirements  that quotations  available through  dealers or
other market sources be firm or revised on a timely basis. Quotation information
generally is representative of very  large transactions in the interbank  market
and  thus  might not  reflect  odd-lot transactions  where  rates might  be less
favorable.  The   interbank  market   in  foreign   currencies  is   a   global,
round-the-clock  market. To the  extent the U.S. options  or Futures markets are
closed while the markets for the underlying currencies remain open,  significant
price  and rate movements might take place in the underlying markets that cannot
be reflected in  the markets  for the Futures  contracts or  options until  they
reopen.
 
Settlement of Futures Contracts, Forward Contracts and options involving foreign
currencies  might  be required  to  take place  within  the country  issuing the
underlying currency. Thus, an  Underlying Theme Portfolio  might be required  to
accept  or make delivery  of the underlying foreign  currency in accordance with
any U.S. or  foreign regulations  regarding the maintenance  of foreign  banking
arrangements  by U.S. residents and might be required to pay any fees, taxes and
charges associated with such delivery assessed in the issuing country.
 
COVER
Transactions using Forward Contracts, Futures Contracts and options (other  than
options  purchased by an Underlying Theme Portfolio) expose the Underlying Theme
Portfolio to an obligation to another party. An Underlying Theme Portfolio  will
not  enter into any  such transactions unless  it owns either  (1) an offsetting
("covered") position  in  securities,  currencies,  or  other  options,  Forward
Contracts  or Futures  Contracts or  (2) cash,  receivables and  short-term debt
securities
 
                  Statement of Additional Information Page 16
<PAGE>
                             AIM GLOBAL TRENDS FUND
with a value  sufficient at  all times to  cover its  potential obligations  not
covered  as provided in  (1) above. Each Underlying  Theme Portfolio will comply
with SEC guidelines regarding cover for these instruments and, if the guidelines
so require, set aside cash or liquid securities.
 
Assets used as cover or  held in a segregated account  cannot be sold while  the
position  in the corresponding  Forward Contract, Futures  Contract or option is
open, unless they are replaced with other appropriate assets. If a large portion
of an Underlying  Theme Portfolio's assets  is used for  cover or otherwise  set
aside,  it could affect portfolio management or the Underlying Theme Portfolio's
ability to meet redemption requests or other current obligations.
 
- --------------------------------------------------------------------------------
 
                              RISK FACTORS OF THE
                          UNDERLYING THEME PORTFOLIOS
 
- --------------------------------------------------------------------------------
 
DEBT SECURITIES
The value  of  the debt  securities  held  by each  Underlying  Theme  Portfolio
generally  will vary conversely with market interest rates. If interest rates in
a market fall, the value  of the debt securities  held by each Underlying  Theme
Portfolio  ordinarily will rise. If market interest rates increase, however, the
debt securities owned by each Underlying Theme Portfolio in that market will  be
likely to decrease in value.
 
The  Global  Consumer  Products and  Services  Portfolio,  Global Infrastructure
Portfolio and Global Resources Portfolio may each invest up to 20% of its  total
assets in debt securities rated below investment grade. Such investments involve
a  high  degree of  risk.  However, those  Portfolios  will not  invest  in debt
securities that are in default as to payment of principal and interest.
 
Debt rated Baa  by Moody's Investors  Service, Inc. ("Moody")  is considered  by
Moody's  to have speculative characteristics. Debt rated  BB, B, CCC, CC or C by
Standard & Poor's, a  division of The McGraw-Hill  Companies, Inc. ("S&P"),  and
debt  rated  Ba,  B,  Caa, Ca  or  C  by  Moody's is  regarded,  on  balance, as
predominantly speculative with respect to the issuer's capacity to pay  interest
and  repay principal in accordance with the terms of the obligation. For S&P, BB
indicates the lowest degree of speculation for such lower quality debt and C the
highest degree of speculation. For Moody's,  Baa indicates the lowest degree  of
speculation for such lower quality debt and C the highest degree of speculation.
While  such  lower quality  debt will  likely have  some quality  and protective
characteristics, these  are  outweighed by  large  uncertainties or  major  risk
exposures  to adverse conditions. Debt  rated C by Moody's  or S&P is the lowest
rated debt that is  not in default  as to principal or  interest, and issues  so
rated  can be regarded as having extremely  poor prospects of ever attaining any
real investment  standing.  Lower quality  debt  securities also  are  generally
considered  to be  subject to greater  risk than securities  with higher ratings
with regard  to a  deterioration  of general  economic conditions.  These  lower
quality  debt  securities are  the equivalent  of high  yield, high  risk bonds,
commonly known as "junk bonds."
 
Ratings of debt securities represent the rating agency's opinion regarding their
quality and are not a guarantee of quality. Rating agencies attempt to  evaluate
the  safety of principal and interest payments  and do not evaluate the risks of
fluctuations in market  value. Also,  rating agencies  may fail  to make  timely
changes  in credit ratings in response to subsequent events, so that an issuer's
current financial condition may be better or worse than a rating indicates.
 
The market values of  lower quality debt securities  tend to reflect  individual
developments  of  the  issuer  to  a  greater  extent  than  do  higher  quality
securities, which  react  primarily to  fluctuations  in the  general  level  of
interest  rates.  In addition,  lower quality  debt securities  tend to  be more
sensitive to economic conditions  and generally have  more volatile prices  than
higher  quality securities. Issuers of lower quality securities are often highly
leveraged and  may  not have  available  to  them more  traditional  methods  of
financing.  For example,  during an economic  downturn or a  sustained period of
rising interest rates, highly leveraged issuers of lower quality securities  may
experience  financial stress.  During such  periods, such  issuers may  not have
sufficient revenues to  meet their  interest payment  obligations. The  issuer's
ability  to  service its  debt  obligations may  also  be adversely  affected by
specific developments affecting the  issuer, such as  the issuer's inability  to
meet  specific projected business forecasts  or the unavailability of additional
financing. The  risk of  loss due  to  default by  the issuer  is  significantly
greater  for the holders of lower quality securities because such securities are
generally unsecured and may be subordinated to the claims of other creditors  of
the issuer.
 
Lower  quality  debt securities  of corporate  issuers  frequently have  call or
buy-back features that permit the issuer to call or repurchase the security from
an Underlying Theme  Portfolio. If  an issuer  exercises these  provisions in  a
declining interest
 
                  Statement of Additional Information Page 17
<PAGE>
                             AIM GLOBAL TRENDS FUND
rate  market, the  Underlying Theme Portfolio  may have to  replace the security
with a lower yielding security, resulting  in a decreased return for  investors.
In  addition, the Underlying  Theme Portfolios may  have difficulty disposing of
lower quality securities because they may have a thin trading market. There  may
be no established retail secondary market for many of these securities, and each
Underlying  Theme Portfolio anticipates that such  securities could be sold only
to a limited number of dealers or institutional investors. The lack of a  liquid
secondary  market  also may  have an  adverse  impact on  market prices  of such
instruments and may make it more  difficult for the Underlying Theme  Portfolios
to  obtain accurate  market quotations for  purposes of  valuing their portfolio
investments. The Underlying Theme Portfolios may also acquire lower quality debt
securities during an initial underwriting or which are sold without registration
under applicable securities laws. Such securities involve special considerations
and risks.
 
In addition to the foregoing, factors that  could have an adverse effect on  the
market  value of  lower quality  debt securities  in which  the Underlying Theme
Portfolios may invest include: (i) potential adverse publicity; (ii)  heightened
sensitivity  to general economic  or political conditions;  and (iii) the likely
adverse impact of a major economic recession. An Underlying Theme Portfolio  may
also  incur additional expenses  to the extent  it is required  to seek recovery
upon a default in  the payment of principal  or interest on portfolio  holdings,
and  the Underlying Theme Portfolio may have limited legal recourse in the event
of a default.
 
The Sub-adviser  attempts  to minimize  the  speculative risks  associated  with
investments in lower quality securities through credit analysis and by carefully
monitoring  current trends in  interest rates, political  developments and other
factors.
 
ILLIQUID SECURITIES
Each Underlying  Theme Portfolio  may invest  up to  15% of  its net  assets  in
illiquid  securities.  Securities may  be considered  illiquid if  an Underlying
Theme  Portfolio  cannot  reasonably  expect  within  seven  days  to  sell  the
securities  for approximately the amount at which it values such securities. See
"Investment Limitations of the Underlying Theme Funds and Portfolios." The  sale
of  illiquid securities, if they can be sold at all, generally will require more
time and  result in  higher  brokerage charges  or  dealer discounts  and  other
selling  expenses than  will the  sale of  liquid securities  such as securities
eligible for trading on U.S. securities  exchanges or in OTC markets.  Moreover,
restricted  securities, which may  be illiquid for  purposes of this limitation,
often sell, if at all, at a price lower than similar securities that are liquid.
 
Illiquid securities include those that are subject to restrictions contained  in
the  securities laws  of other  countries. However,  securities that  are freely
marketable in the country  where they are principally  traded, but would not  be
freely  marketable in the United States,  will not be considered illiquid. Where
registration is required, an Underlying Theme Portfolio may be obligated to  pay
all  or part of the  registration expenses and a  considerable period may elapse
between the time  of the  decision to  sell and  the time  the Underlying  Theme
Portfolio  may be permitted  to sell a security  under an effective registration
statement. If, during such a period, adverse market conditions were to  develop,
the  Underlying  Theme  Portfolio  might  obtain  a  less  favorable  price than
prevailed when it decided to sell.
 
Not  all  restricted  securities   are  illiquid.  In   recent  years  a   large
institutional   market  has  developed  for  certain  securities  that  are  not
registered under  the Securities  Act  of 1933,  as  amended (the  "1933  Act"),
including  private placements, repurchase  agreements, commercial paper, foreign
securities and corporate bonds and notes. These instruments are often restricted
securities because  the  securities  are  sold  in  transactions  not  requiring
registration.  Institutional  investors generally  will not  seek to  sell these
instruments to the general  public, but instead will  often depend either on  an
efficient  institutional  market in  which such  unregistered securities  can be
readily resold  or on  an issuer's  ability  to honor  a demand  for  repayment.
Therefore,  the fact that there are  contractual or legal restrictions on resale
to the  general  public  or  certain institutions  is  not  dispositive  of  the
liquidity of such investments.
 
Rule  144A under the 1933 Act establishes  a "safe harbor" from the registration
requirements of the  1933 Act  for resales  of certain  securities to  qualified
institutional  buyers.  Institutional  markets  for  restricted  securities have
developed as a result of Rule 144A, providing both readily ascertainable  values
for  restricted securities and the ability to liquidate an investment to satisfy
share redemption orders. Such markets include automated systems for the trading,
clearance and  settlement of  unregistered securities  of domestic  and  foreign
issuers,  such as  the PORTAL  System sponsored  by the  National Association of
Securities Dealers,  Inc.  An  insufficient number  of  qualified  institutional
buyers interested in purchasing Rule 144A-eligible restricted securities held by
an Underlying Theme Portfolio, however, could affect adversely the marketability
of such portfolio securities, and the Underlying Theme Portfolio might be unable
to dispose of such securities promptly or at favorable prices.
 
With respect to liquidity determinations generally, the applicable Board has the
ultimate  responsibility for determining  whether specific securities, including
restricted securities pursuant to  Rule 144A under the  1933 Act, are liquid  or
illiquid.   Each  Board  has   delegated  the  function   of  making  day-to-day
determinations of liquidity  to the Sub-adviser,  in accordance with  procedures
approved  by that Board. The Sub-adviser takes  into account a number of factors
in reaching liquidity
 
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                             AIM GLOBAL TRENDS FUND
   
decisions, including (i)  the frequency  of trading  in the  security, (ii)  the
number of dealers that make quotes for the security, (iii) the number of dealers
that  have undertaken to make a market in the security, (iv) the number of other
potential purchasers  and (v)  the nature  of the  security and  how trading  is
effected  (e.g., the time needed to sell  the security, how offers are solicited
and the  mechanics  of transfer).  The  Sub-adviser monitors  the  liquidity  of
securities held by each Underlying Theme Portfolio and periodically reports such
determinations  to the applicable Board. If the liquidity percentage restriction
of an Underlying Theme Portfolio is satisfied at the time of investment, a later
increase in the percentage of illiquid  securities held by the Underlying  Theme
Portfolio  resulting from a change in market value or assets will not constitute
a violation of that restriction. If as a  result of a change in market value  or
assets,  the  percentage of  illiquid securities  held  by the  Underlying Theme
Portfolio increases  above  the  applicable limit,  the  Sub-adviser  will  take
appropriate  steps to bring the aggregate  amount of illiquid assets back within
the prescribed  limitations  as  soon as  reasonably  practicable,  taking  into
account  the effect  of any disposition  on the Underlying  Theme Portfolio. The
Sub-adviser believes  that carefully  selected  investments in  joint  ventures,
cooperatives,   partnerships   and   state   enterprises   that   are   illiquid
(collectively, "Special Situations") could enable an Underlying Theme  Portfolio
to  achieve  capital appreciation  substantially  exceeding the  appreciation it
would realize if it did not make such investments. However, in order to  attempt
to  limit investment risk,  each Underlying Theme Portfolio  will invest no more
than 5% of its total assets in Special Situations.
    
 
FOREIGN SECURITIES
    POLITICAL, SOCIAL AND  ECONOMIC RISKS. Investing  in securities of  non-U.S.
companies may entail additional risks due to the potential political, social and
economic  instability  of  certain  countries and  the  risks  of expropriation,
nationalization, confiscation  or  the  imposition of  restrictions  on  foreign
investment convertibility of currencies into U.S. dollars and on repatriation of
capital  invested. In the event of  such expropriation, nationalization or other
confiscation by any country, an Underlying Theme Portfolio could lose its entire
investment in any such country.
 
    RELIGIOUS, POLITICAL AND ETHNIC INSTABILITY.  Certain countries in which  an
Underlying  Theme Portfolio  may invest  may have  groups that  advocate radical
religious or  revolutionary philosophies  or  support ethnic  independence.  Any
disturbance  on  the part  of  such individuals  could  carry the  potential for
widespread destruction  or confiscation  of property  owned by  individuals  and
entities foreign to such country and could cause the loss of an Underlying Theme
Portfolio's  investment in  those countries.  Instability may  also result from,
among other things,  (i) authoritarian  governments or  military involvement  in
political  and economic decision-making, including changes in government through
extra-constitutional means,  (ii) popular  unrest  associated with  demands  for
improved  political, economic and social conditions; and (iii) hostile relations
with neighboring  or  other  countries.  Such  political,  social  and  economic
instability could disrupt the principal financial markets in which an Underlying
Theme Portfolio invests and adversely affect the value of its assets.
 
    FOREIGN  INVESTMENT  RESTRICTIONS.  Certain  countries  prohibit  or  impose
substantial restrictions on investments  in their capital markets,  particularly
their equity markets, by foreign entities such as an Underlying Theme Portfolio.
These  restrictions or  controls may at  times limit or  preclude investments in
certain securities and may increase the cost and expenses of an Underlying Theme
Portfolio. For example,  certain countries require  prior governmental  approval
before  investments by foreign  persons may be  made or may  limit the amount of
investment by foreign persons in a particular company or limit the investment by
foreign persons to only  a specific class  of securities of  a company that  may
have  less  advantageous  terms than  securities  of the  company  available for
purchase by nationals. Moreover, the national policies of certain countries  may
restrict  investment opportunities in issuers  or industries deemed sensitive to
national interests. In  addition, some countries  require governmental  approval
for the repatriation of investment income, capital or the proceeds of securities
sales  by  foreign investors.  In addition,  if  there is  a deterioration  in a
country's balance  of  payments or  for  other  reasons, a  country  may  impose
restrictions   on  foreign  capital  remittances  abroad.  An  Underlying  Theme
Portfolio could be adversely affected by delays  in, or a refusal to grant,  any
required  governmental approval for repatriation, as  well as by the application
to it of other restrictions on investments.
 
    NON-UNIFORM CORPORATE DISCLOSURE STANDARDS AND GOVERNMENTAL
REGULATION. Foreign companies are subject to accounting, auditing and  financial
standards  and requirements that differ, in some cases significantly, from those
applicable to U.S. companies. In particular, the assets, liabilities and profits
appearing on the  financial statements  of such a  company may  not reflect  its
financial  position or results of operations in  the way they would be reflected
had such financial statements  been prepared in  accordance with U.S.  generally
accepted  accounting  principles.  Most of  the  foreign securities  held  by an
Underlying Theme Portfolio will not be registered with the SEC or regulators  of
any  foreign  country, nor  will the  issuers  thereof be  subject to  the SEC's
reporting  requirements.  Thus,  there   will  be  less  available   information
concerning  most  foreign  issuers of  securities  held by  an  Underlying Theme
Portfolio than  is available  concerning U.S.  issuers. In  instances where  the
financial  statements  of an  issuer are  not deemed  to reflect  accurately the
financial situation of the issuer,  the Sub-adviser will take appropriate  steps
to evaluate the proposed investment, which may include on-site inspection of the
 
                  Statement of Additional Information Page 19
<PAGE>
                             AIM GLOBAL TRENDS FUND
issuer,  interviews  with  its management  and  consultations  with accountants,
bankers and other  specialists. There is  substantially less publicly  available
information about foreign companies than there are reports and ratings published
about U.S. companies. In addition, where public information is available, it may
be  less  reliable  than such  information  regarding U.S.  issuers.  Issuers of
securities in foreign jurisdictions are generally not subject to the same degree
of regulation as are U.S. issuers  with respect to such matters as  restrictions
on  market manipulation,  insider trading rules,  shareholder proxy requirements
and timely disclosure of information.
 
    CURRENCY FLUCTUATIONS. Because each Underlying Theme Portfolio, under normal
circumstances, will invest  a substantial  portion of  its total  assets in  the
securities  of foreign issuers  that are denominated  in foreign currencies, the
strength or weakness  of the U.S.  dollar against such  foreign currencies  will
account  for part of  an Underlying Theme  Portfolio's investment performance. A
decline in the  value of any  particular currency against  the U.S. dollar  will
cause  a decline  in the  U.S. dollar value  of an  Underlying Theme Portfolio's
holdings of securities  and cash  denominated in that  currency and,  therefore,
will  cause an overall  decline in its  and its corresponding  Feeder Fund's net
asset value (as  applicable) and  any net  investment income  and capital  gains
derived  from  such  securities  to  be  distributed  in  U.S.  dollars  to  the
shareholders thereof. Moreover, if the value of the foreign currencies in  which
an  Underlying Theme  Portfolio receives its  income falls relative  to the U.S.
dollar between  receipt of  the  income and  the  making of  distributions,  the
Underlying  Theme Portfolio  may be required  to liquidate securities  if it has
insufficient cash in U.S. dollars to meet distribution requirements.
 
The rate of exchange between the U.S. dollar and other currencies is  determined
by  several factors, including the supply  and demand for particular currencies,
central bank efforts to support particular currencies, the relative movement  of
interest  rates and the pace of business activity in the other countries and the
United States, and other economic  and financial conditions affecting the  world
economy.
 
Although  each Underlying  Theme Portfolio values  its assets daily  in terms of
U.S. dollars, the  Underlying Theme Portfolios  do not intend  to convert  their
holdings  of  foreign  currencies  into  U.S. dollars  on  a  daily  basis. Each
Underlying Theme Portfolio will do so,  from time to time, and investors  should
be  aware of the costs of currency conversion. Although foreign exchange dealers
do not  charge a  fee for  conversion, they  do realize  a profit  based on  the
difference  ("spread") between  the prices  at which  they buy  and sell various
currencies. Thus, a dealer may offer to sell a foreign currency to an Underlying
Theme Portfolio at one rate, while offering a lesser rate of exchange should  an
Underlying Theme Portfolio desire to sell that currency to the dealer.
 
    ADVERSE  MARKET CHARACTERISTICS. Securities  of many foreign  issuers may be
less liquid and their  prices more volatile than  securities of comparable  U.S.
issuers.  In  addition, foreign  securities  markets and  brokers  generally are
subject to  less governmental  supervision  and regulation  than in  the  United
States,  and  foreign  securities  transactions  usually  are  subject  to fixed
commissions, which  generally are  higher than  negotiated commissions  on  U.S.
transactions.  In addition,  foreign securities  transactions may  be subject to
difficulties associated  with the  settlement of  such transactions.  Delays  in
settlement  could result in temporary periods when assets of an Underlying Theme
Portfolio are uninvested and  no return is earned  thereon. The inability of  an
Underlying Theme Portfolio to make intended security purchases due to settlement
problems  could cause it to  miss attractive investment opportunities. Inability
to dispose  of a  portfolio security  due to  settlement problems  either  could
result  in losses to an Underlying Theme Portfolio due to subsequent declines in
value of  the portfolio  security or,  if that  Underlying Theme  Portfolio  has
entered into a contract to sell the security, could result in possible liability
to   the  purchaser.  The  Sub-adviser  will  consider  such  difficulties  when
determining the allocation of an  Underlying Theme Portfolio's assets,  although
the  Sub-adviser does  not believe that  such difficulties will  have a material
adverse effect on an Underlying Theme Portfolio's portfolio trading activities.
 
Each Underlying Theme Portfolio  may use foreign  custodians, which may  involve
risks  in addition to  those related to  its use of  U.S. custodians. Such risks
include uncertainties relating  to (1)  determining and  monitoring the  foreign
custodian's   financial  strength,  reputation  and  standing,  (2)  maintaining
appropriate safeguards concerning an  Underlying Theme Portfolio's  investments,
and  (3) possible difficulties in obtaining and enforcing judgments against such
custodians.
 
    WITHHOLDING TAXES. Each Underlying  Theme Portfolio's net investment  income
from  securities of foreign issuers  may be subject to  withholding taxes by the
foreign issuer's country, thereby reducing  that income or delaying the  receipt
of income when those taxes may be recaptured. See "Taxes."
 
    CONCENTRATION.  To  the  extent  an  Underlying  Theme  Portfolio  invests a
significant portion  of  its  assets  in securities  of  issuers  located  in  a
particular  country or region of  the world, it may  be subject to greater risks
and may  experience  greater  volatility  than  a  fund  that  is  more  broadly
diversified geographically.
 
                  Statement of Additional Information Page 20
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                             AIM GLOBAL TRENDS FUND
 
    SPECIAL  CONSIDERATIONS AFFECTING WESTERN  EUROPEAN COUNTRIES. The countries
that are members of the European Economic Community ("Common Market")  (Belgium,
Denmark,  France,  Germany,  Greece,  Ireland,  Italy,  Luxembourg, Netherlands,
Portugal, Spain, and the United  Kingdom) eliminated certain import tariffs  and
quotas  and  other trade  barriers with  respect  to one  another over  the past
several years. The  Sub-adviser believes that  this deregulation should  improve
the  prospects for  economic growth  in many  Western European  countries. Among
other things, the deregulation could  enable companies domiciled in one  country
to  avail  themselves  of lower  labor  costs  existing in  other  countries. In
addition, this deregulation could benefit companies domiciled in one country  by
opening  additional markets  for their  goods and  services in  other countries.
Since, however, it is not  clear what the exact form  or effect of these  Common
Market  reforms  will be  on business  in  Western Europe,  it is  impossible to
predict the long-term  impact of  the implementation  of these  programs on  the
securities owned by an Underlying Theme Portfolio.
 
    SPECIAL    CONSIDERATIONS    AFFECTING   RUSSIA    AND    EASTERN   EUROPEAN
COUNTRIES. Investing in Russia  and Eastern European  countries involves a  high
degree  of  risk  and  special  considerations  not  typically  associated  with
investing in  the  U.S.  securities  markets and  should  be  considered  highly
speculative.  Such risks include the following: (1) delays in settling portfolio
transactions and risk of  loss arising out of  the system of share  registration
and  custody; (2) the risk  that it may be impossible  or more difficult than in
other countries  to  obtain and/or  enforce  a judgment;  (3)  pervasiveness  of
corruption  and  crime  in  the  economic  system;  (4)  currency  exchange rate
volatility and the lack  of available currency  hedging instruments; (5)  higher
rates  of inflation (including the risk of social unrest associated with periods
of hyper-inflation) and  high unemployment; (6)  controls on foreign  investment
and   local  practices   disfavoring  foreign   investors  and   limitations  on
repatriation of invested capital, profits and dividends, and on a fund's ability
to exchange local  currencies for  U.S. dollars; (7)  political instability  and
social  unrest and  violence; (8)  the risk that  the governments  of Russia and
Eastern European countries may  decide not to continue  to support the  economic
reform  programs  implemented  recently  and  could  follow  radically different
political and/or  economic policies  to the  detriment of  investors,  including
non-market-oriented  policies such as  the support of  certain industries at the
expense of other  sectors or  investors, or a  return to  the centrally  planned
economy that existed when such countries had a communist form of government; (9)
the financial condition of companies in these countries, including large amounts
of  inter-company debt which may  create a payments crisis  on a national scale;
(10) dependency on  exports and  the corresponding  importance of  international
trade; (11) the risk that the tax system in these countries will not be reformed
to  prevent inconsistent, retroactive  and/or exorbitant taxation;  and (12) the
underdeveloped nature of the securities markets.
 
    SPECIAL CONSIDERATIONS AFFECTING JAPAN. Japan's economic growth has declined
significantly since 1990. The general government position has deteriorated as  a
result  of weakening economic  growth and stimulative  measures taken to support
economic activity and to  restore financial stability.  Although the decline  in
interest   rates  and  fiscal  stimulation   packages  have  helped  to  contain
recessionary forces, uncertainties remain. Japan is also heavily dependent  upon
international  trade, so its  economy is especially  sensitive to trade barriers
and disputes.  Japan has  had  difficult relations  with its  trading  partners,
particularly the United States, where the trade imbalance is the greatest. It is
possible  that  trade sanctions  and other  protectionist measures  could impact
Japan adversely in both the short and the long term.
 
The common  stocks  of many  Japanese  companies trade  at  high  price-earnings
ratios.  Differences  in accounting  methods make  it  difficult to  compare the
earnings of  Japanese companies  with  those of  companies in  other  countries,
especially  in the  United States. In  general, however, reported  net income in
Japan is  understated relative  to U.S.  accounting standards  and this  is  one
reason why price-earnings ratios of the stocks of Japanese companies have tended
historically  to be  higher than  those for  U.S. stocks.  In addition, Japanese
companies have  tended to  have  higher growth  rates  than U.S.  companies  and
Japanese  interest rates  have generally been  lower than in  the United States,
both  factors  which  tend  to  result  in  lower  discount  rates  and   higher
price-earnings ratios in Japan than in the United States.
 
The  Japanese securities  markets are  less regulated  than those  in the United
States. Evidence has emerged from time to time of distortion of market prices to
serve political or other purposes.  Shareholders' rights are not always  equally
enforced.  In addition, Japan's banking  industry is undergoing problems related
to bad loans and declining values in real estate.
 
    SPECIAL CONSIDERATIONS AFFECTING  PACIFIC REGION COUNTRIES.  Certain of  the
risks  associated with international investments  are heightened for investments
in Pacific region  countries. For  example, some  of the  currencies of  Pacific
region  countries  have experienced  steady  devaluations relative  to  the U.S.
dollar, and major  adjustments have been  made periodically in  certain of  such
currencies. Certain countries, such as India, face serious exchange constraints.
Jurisdictional  disputes  also exist  between South  Korea  and North  Korea. In
addition, the  Underlying  Theme  Portfolios  may invest  in  Hong  Kong,  which
reverted to Chinese administration on July 1, 1997. Investments in Hong Kong may
be  subject to expropriation, nationalization or  confiscation, in which case an
Underlying  Theme  Portfolio   could  lose   its  entire   investment  in   Hong
 
                  Statement of Additional Information Page 21
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                             AIM GLOBAL TRENDS FUND
Kong. In addition, the reversion of Hong Kong also presents a risk that the Hong
Kong  dollar will be devalued and a risk of possible loss of investor confidence
in Hong Kong's currency, stock market and assets.
 
    SPECIAL  CONSIDERATIONS  AFFECTING  LATIN  AMERICAN  COUNTRIES.  Most  Latin
American  countries have experienced substantial,  and in some periods extremely
high, rates of  inflation for many  years. Inflation and  rapid fluctuations  in
inflation  rates have had and may continue  to have very negative effects on the
economies and securities  markets of certain  Latin American countries.  Certain
Latin  American countries are also among the largest debtors to commercial banks
and foreign governments. At times certain Latin American countries have declared
moratoria on  the payment  of principal  and/or interest  on external  debt.  In
addition,  certain  Latin  American  securities  markets  have  experienced high
volatility in recent years.
 
Latin American countries may  also close certain sectors  of their economies  to
equity  investments  by foreigners.  Further due  to  the absence  of securities
markets and  publicly  owned corporations  and  due to  restrictions  on  direct
investment  by foreign entities,  investments may only be  made in certain Latin
American  countries  solely   or  primarily   through  governmentally   approved
investment vehicles or companies.
 
Certain Latin American countries may have managed currencies that are maintained
at  artificial levels to the U.S. dollar rather than at levels determined by the
market. This type  of system can  lead to  sudden and large  adjustments in  the
currency  which, in turn, can  have a disruptive and  negative effect on foreign
investors. For example, in late  1994, the value of  the Mexican peso lost  more
than one-third of its value relative to the U.S. dollar.
 
    SPECIAL   CONSIDERATIONS  AFFECTING  EMERGING   MARKETS.  Investing  in  the
securities of companies in emerging markets may entail special risks relating to
potential political and  economic instability  and the  risks of  expropriation,
nationalization,  confiscation  or  the imposition  of  restrictions  on foreign
investment, convertibility of currencies into  U.S. dollars and on  repatriation
of  capital invested.  In the  event of  such expropriation,  nationalization or
other confiscation by any country, an Underlying Theme Portfolio could lose  its
entire investment in any such country.
 
Emerging  securities  markets are  substantially  smaller, less  developed, less
liquid and more volatile than the major securities markets. The limited size  of
emerging securities markets and limited trading value in issuers compared to the
volume  of  trading in  U.S. securities  could  cause prices  to be  erratic for
reasons apart  from factors  that  affect the  quality  of the  securities.  For
example, limited market size may cause prices to be unduly influenced by traders
who  control  large  positions. Adverse  publicity  and  investors' perceptions,
whether or  not  based on  fundamental  analysis,  may decrease  the  value  and
liquidity  of portfolio  securities, especially  in these  markets. In addition,
securities traded in certain emerging markets may be subject to risks due to the
inexperience of financial intermediaries, a lack of modern technology, the  lack
of  a sufficient capital base to expand business operations, and the possibility
of permanent or temporary termination of trading.
 
Settlement mechanisms in emerging securities  markets may be less efficient  and
reliable  than in more developed markets.  In such emerging securities there may
be share registration and delivery delays or failures.
 
Many emerging market countries have experienced substantial, and in some periods
extremely  high,  rates  of  inflation  for  many  years.  Inflation  and  rapid
fluctuations in inflation rates and corresponding currency devaluations have had
and  may  continue to  have  negative effects  on  the economies  and securities
markets of certain emerging market countries.
 
    PRIVATIZATIONS. The governments of some foreign countries have been  engaged
in  programs  of selling  part or  all of  their stakes  in government  owned or
controlled  enterprises  ("privatizations").   The  Sub-adviser  believes   that
privatizations  may offer opportunities for significant capital appreciation and
intends to invest assets of the Underlying Theme Portfolios in privatizations in
appropriate circumstances. In certain foreign countries, the ability of  foreign
entities   such   as  the   Underlying  Theme   Portfolios  to   participate  in
privatizations may be limited by local law, or the terms on which the Underlying
Theme Portfolios may be permitted to  participate may be less advantageous  than
those  for local investors.  There can be no  assurance that foreign governments
will continue to sell  companies currently owned or  controlled by them or  that
privatization programs will be successful.
 
                  Statement of Additional Information Page 22
<PAGE>
                             AIM GLOBAL TRENDS FUND
 
                             INVESTMENT LIMITATIONS
 
- --------------------------------------------------------------------------------
 
INVESTMENT LIMITATIONS OF THE FUND
 
   
FUNDAMENTAL  LIMITATIONS.  The  following fundamental  limitations  of  the Fund
cannot be changed without the affirmative vote of a majority of the  outstanding
shares of the Fund.
    
 
The Fund will not:
 
        (1)  Issue senior securities or borrow  money, except as permitted under
    the 1940 Act and then  not in excess of 33  1/3% of the Fund's total  assets
    (including   the  amount  borrowed  but   reduced  by  any  liabilities  not
    constituting borrowings) at the time of the borrowing, except that the  Fund
    may  borrow up to  an additional 5%  of its total  assets (not including the
    amount borrowed) for temporary or emergency purposes;
 
        (2) Make loans, except through loans of portfolio securities or  through
    repurchase  agreements, provided that for  purposes of this restriction, the
    acquisition of bonds, debentures, other  debt securities or instruments,  or
    participations  or  other interests  therein  and investments  in government
    obligations, commercial paper, certificates of deposit, bankers' acceptances
    or similar instruments will not be considered the making of a loan;
 
        (3) Engage in the business of underwriting securities of other  issuers,
    except  to the extent that the Fund might be considered an underwriter under
    the federal securities laws in connection with its disposition of  portfolio
    securities;
 
        (4)  Purchase or sell real estate, except that investments in securities
    of issuers that  invest in  real estate and  investments in  mortgage-backed
    securities,  mortgage  participations  or  other  instruments  supported  by
    interests in real estate are not subject to this limitation, and except that
    the Fund may exercise rights  under agreements relating to such  securities,
    including  the right to  enforce security interests and  to hold real estate
    acquired by  reason  of such  enforcement  until  that real  estate  can  be
    liquidated in an orderly manner;
 
        (5) Purchase or sell physical commodities unless acquired as a result of
    owning  securities or other instruments, but  the Fund may purchase, sell or
    enter  into  financial  options  and  futures,  forward  and  spot  currency
    contracts,  swap transactions  and other  financial contracts  or derivative
    instruments; or
 
        (6) Purchase securities of any one issuer if, as a result, more than  5%
    of the Fund's total assets would be invested in securities of that issuer or
    the  Fund  would  own  or  hold more  than  10%  of  the  outstanding voting
    securities of that issuer, except that up to 25% of the Fund's total  assets
    may  be invested  without regard  to this  limitation, and  except that this
    limitation does not  apply to securities  issued or guaranteed  by the  U.S.
    government,  its agencies  or instrumentalities  or to  securities issued by
    other investment companies.
 
Because of its investment objective and policies, the Fund will concentrate more
than 25% of  its assets  in the  mutual fund  industry. In  accordance with  the
Fund's  investment program set forth in the Prospectus, the Fund may invest more
than 25% of its assets in the Underlying Theme Funds.
 
NON-FUNDAMENTAL LIMITATIONS. The  following investment limitations  of the  Fund
are  non-fundamental and  may be  changed by  the vote  of the  Trust's Board of
Trustees without shareholder approval.
 
The Fund will not:
 
        (1) Invest more  than 15% of  its net assets  in illiquid securities,  a
    term  which means securities that cannot be disposed of within seven days in
    the ordinary course  of business at  approximately the amount  at which  the
    Fund  has valued the securities and includes, among other things, repurchase
    agreements maturing in more than seven days;
 
        (2) Purchase portfolio securities  while borrowings in  excess of 5%  of
    its total assets are outstanding;
 
        (3)   Purchase  securities  on  margin,  except  for  short-term  credit
    necessary for clearance of portfolio  transactions and except that the  Fund
    may make margin deposits in connection with its use of financial options and
    futures,  forward and spot  currency contracts, swap  transactions and other
    financial contract or derivative instruments;
 
                  Statement of Additional Information Page 23
<PAGE>
                             AIM GLOBAL TRENDS FUND
 
        (4) Engage in short  sales of securities or  maintain a short  position,
    except that the Fund may maintain short positions in connection with its use
    of  financial options an futures, forward  and spot currency contracts, swap
    transactions and other financial contracts or derivative instruments; or
 
        (5) Purchase securities  of other  investment companies,  except to  the
    extent  permitted by the 1940 Act or  under the terms of any exemptive order
    granted by  the  SEC and  except  that this  limitation  does not  apply  to
    securities received or acquired as dividends, through offers of exchange, or
    as a result of reorganization, consolidation, or merger.
 
If a percentage restriction on investment or utilization of assets is adhered to
at  the  time of  an investment  or  transaction, a  later change  in percentage
ownership of a  security or kind  of securities resulting  from changing  market
values  or a  similar type of  event will not  be considered a  violation of the
Fund's policies or restrictions.
 
Notwithstanding the  forgoing investment  limitations, the  Fund may  invest  in
Underlying Theme Funds that have adopted investment limitations that may be more
or  less restrictive than those  listed above. As a  result, the Fund may engage
indirectly in investment  strategies that  are prohibited  under the  investment
limitations  listed  above.  The  investment  limitations  and  other investment
policies and restrictions  of each Underlying  Theme Fund are  described in  its
prospectus and statement of additional information.
 
Pursuant   to  Section  12(d)(1)(G)  of  the  1940  Act,  the  Fund  may  invest
substantially all of its assets in the Underlying Theme Funds.
 
INVESTMENT LIMITATIONS OF THE UNDERLYING THEME FUNDS AND PORTFOLIOS
 
FEEDER FUNDS
The Financial Services  Fund, Infrastructure Fund,  Resources Fund and  Consumer
Products and Services Fund (each, a "Feeder Fund," and collectively, the "Feeder
Funds")  each has  the following fundamental  investment policy to  enable it to
invest in the Financial Services Portfolio, Infrastructure Portfolio,  Resources
Portfolio  and Consumer Products and Services Portfolio (each a "Portfolio," and
collectively, the "Portfolios"), respectively:
 
Notwithstanding any other investment policy of the Fund, the Fund may invest all
of  its  investable  assets  (cash,   securities  and  receivables  related   to
securities)  in an  open-end management investment  company having substantially
the same investment objective, policies and limitations as the Fund.
 
All other fundamental  investment policies, and  the non-fundamental  investment
policies,  of each  Feeder Fund and  its corresponding  Portfolio are identical.
Therefore, although  the following  discusses the  investment policies  of  each
Portfolio  and its Board of Trustees, it applies equally to each Feeder Fund and
its Board of Trustees.
 
   
Each Portfolio has adopted the  following investment limitations as  fundamental
policies  that may not be changed without  the affirmative vote of a majority of
the outstanding shares of the Portfolio. Whenever a Feeder Fund is requested  to
vote  on a change in the  investment limitations of its corresponding Portfolio,
the Fund will  hold a meeting  of its shareholders  and will cast  its votes  as
instructed by its shareholders.
    
 
No Portfolio may:
 
        (1)  Purchase or sell real estate, except that investments in securities
    of issuers that  invest in  real estate and  investments in  mortgage-backed
    securities,  mortgage  participations  or  other  instruments  supported  by
    interests in real estate are not subject to this limitation, and except that
    the  Portfolio  may  exercise  rights  under  agreements  relating  to  such
    securities,  including the right  to enforce security  interests and to hold
    real estate acquired by  reason of such enforcement  until that real  estate
    can be liquidated in an orderly manner;
 
        (2)  Purchase  or  sell  physical  commodities,  but  the  Portfolio may
    purchase, sell or enter into financial options and futures, forward and spot
    currency contracts,  swap  transactions  and other  financial  contracts  or
    derivative instruments;
 
        (3)  Engage in the business of underwriting securities of other issuers,
    except to the extent that the  Portfolio might be considered an  underwriter
    under  the federal  securities laws  in connection  with its  disposition of
    portfolio securities;
 
        (4) Make loans, except through loans of portfolio securities or  through
    repurchase  agreements, provided that  for purposes of  this limitation, the
    acquisition of bonds, debentures, other  debt securities or instruments,  or
    participations  or  other interests  therein  and investments  in government
    obligations, commercial paper, certificates of deposit, bankers' acceptances
    or similar instruments will not be considered the making of a loan;
 
                  Statement of Additional Information Page 24
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                             AIM GLOBAL TRENDS FUND
 
        (5) Issue senior securities or  borrow money, except as permitted  under
    the  1940 Act  and then not  in excess of  33 1/3% of  the Portfolio's total
    assets (including the  amount borrowed  but reduced by  any liabilities  not
    constituting  borrowings)  at the  time of  the  borrowing, except  that the
    Portfolio may  borrow  up to  an  additional 5%  of  its total  assets  (not
    including the amount borrowed) for temporary or emergency purposes; or
 
        (6)  Purchase securities of any one issuer if, as a result, more than 5%
    of the Portfolio's  total assets  would be  invested in  securities of  that
    issuer  or the Portfolio would own or  hold more than 10% of the outstanding
    voting securities of that issuer, except  that up to 25% of the  Portfolio's
    total  assets may be invested without  regard to this limitation, and except
    that this limitation does  not apply to securities  issued or guaranteed  by
    the  U.S.  government, its  agencies or  instrumentalities or  to securities
    issued by other investment companies.
 
The following investment policies of each Portfolio are not fundamental policies
and may  be  changed  by vote  of  the  Portfolios' Board  of  Trustees  without
shareholder approval. No Portfolio may:
 
        (1)  Invest in securities of an issuer if the investment would cause the
    Portfolio to own more than 10% of any class of securities of any one issuer;
 
        (2) Invest  in  companies  for  the purpose  of  exercising  control  or
    management;
 
        (3)  Invest  more than  15% of  its net  assets in  illiquid securities,
    including securities that are illiquid by virtue of the absence of a readily
    available market;
 
        (4) Enter into a futures contract,  an option on a futures contract,  or
    an  option on foreign currency traded  on a CFTC-regulated exchange, in each
    case other than for BONA FIDE hedging purposes (as defined by the CFTC),  if
    the aggregate initial margin and premiums required to establish all of those
    positions (excluding the amount by which options are "in-the-money") exceeds
    5%  of the liquidation value of the Portfolio's portfolio, after taking into
    account unrealized  profits  and  unrealized losses  on  any  contracts  the
    Portfolio has entered into;
 
        (5)  Borrow money except for temporary or emergency purposes (other than
    to meet redemptions). While  borrowings exceed 5%  of the Portfolio's  total
    assets, the Portfolio will not make any additional investments;
 
        (6)  Invest  more  than 10%  of  its  total assets  in  shares  of other
    investment companies and may not invest more than 5% of its total assets  in
    any one investment company or acquire more than 3% of the outstanding voting
    securities of any one investment company;
 
        (7)  Purchase  securities on  margin, provided  that each  Portfolio may
    obtain short-term credits as may be necessary for the clearance of purchases
    and sales of securities,  and further provided that  the Portfolio may  make
    margin deposits in connection with its use of financial options and futures,
    forward  and spot currency contracts,  swap transactions and other financial
    contracts or derivative instruments; or
 
        (8) Mortgage, pledge, or  hypothecate any of  its assets, provided  that
    this  shall not apply to  the transfer of securities  in connection with any
    permissible borrowing  or  to  collateral arrangements  in  connection  with
    permissible activities.
 
   
Investors should refer to the applicable Prospectus for further information with
respect  to  the investment  objective of  each  Feeder Fund,  which may  not be
changed without  the  approval  of  Fund  shareholders,  and  its  corresponding
Portfolio's  investment objective, which may be  changed without the approval of
its shareholders,  and other  investment policies,  techniques and  limitations,
which may or may not be changed without shareholder approval.
    
 
HEALTH CARE FUND
   
The  Health  Care  Fund  has adopted  the  following  investment  limitations as
fundamental policies, which may not be changed without the affirmative vote of a
majority of the outstanding shares of the Health Care Fund.
    
 
The Health Care Fund may not:
 
        (1) Purchase or sell real estate, except that investments in  securities
    of  issuers that  invest in real  estate and  investments in mortgage-backed
    securities,  mortgage  participations  or  other  instruments  supported  by
    interests in real estate are not subject to this limitation, and except that
    the  Health Care Fund may exercise  rights under agreements relating to such
    securities, including the right  to enforce security  interests and to  hold
    real  estate acquired by  reason of such enforcement  until that real estate
    can be liquidated in an orderly manner;
 
        (2) Engage in the business of underwriting securities of other  issuers,
    except  to  the extent  that the  Health  Care Fund  might be  considered an
    underwriter under  the  federal  securities  laws  in  connection  with  its
    disposition of portfolio securities;
 
                  Statement of Additional Information Page 25
<PAGE>
                             AIM GLOBAL TRENDS FUND
 
        (3)  Make loans, except through loans of portfolio securities or through
    repurchase agreements, provided  that for purposes  of this limitation,  the
    acquisition  of bonds, debentures, other  debt securities or instruments, or
    participations or  other interests  therein  and investments  in  government
    obligations, commercial paper, certificates of deposit, bankers' acceptances
    or similar instruments will not be considered the making of a loan;
 
        (4)  Purchase or sell physical commodities, but the Health Care Fund may
    purchase, sell or enter into financial options and futures, forward and spot
    currency contracts,  swap  transactions  and other  financial  contracts  or
    derivative instruments;
 
        (5)  Issue senior securities or borrow  money, except as permitted under
    the 1940 Act and  then not in excess  of 33 1/3% of  the Health Care  Fund's
    total  assets (including the amount borrowed  but reduced by any liabilities
    not constituting borrowings) at the time  of the borrowing, except that  the
    Health  Care Fund may borrow up to an additional 5% of its total assets (not
    including the amount borrowed) for temporary or emergency purposes; or
 
        (6) Purchase securities of any one issuer if, as a result, more than  5%
    of  the Health Care Fund's  total assets would be  invested in securities of
    that issuer or the Health Care Fund would  own or hold more than 10% of  the
    outstanding  voting securities of that issuer, except  that up to 25% of the
    Health Care  Fund's total  assets may  be invested  without regard  to  this
    limitation,  and except  that this limitation  does not  apply to securities
    issued  or   guaranteed   by   the  U.S.   government,   its   agencies   or
    instrumentalities or to securities issued by other investment companies.
 
Notwithstanding  any other investment policy of the Health Care Fund, the Health
Care Fund  may  invest  all  of its  investable  assets  (cash,  securities  and
receivables  related to securities) in an open-end management investment company
having substantially the same investment objective, policies and limitations  as
the Fund.
 
   
The  following investment policies  of the Health Care  Fund are not fundamental
policies and may be changed by vote of the Underlying Trust's Board of  Trustees
without shareholder approval. The Health Care Fund will not:
    
 
        (1)  Purchase securities for which there is no readily available market,
    or enter into repurchase  agreements or purchase  time deposits maturing  in
    more  than seven days, or  purchase OTC options or  hold assets set aside to
    cover OTC options written by the Health Care Fund, if immediately after  and
    as  a result, the value  of such securities would  exceed, in the aggregate,
    15% of the Health Care Fund's net assets;
 
        (2) Purchase securities on  margin, provided that  the Health Care  Fund
    may  obtain  short-term credits  as may  be necessary  for the  clearance of
    purchases and sales of securities, and further provided that the Health Care
    Fund may  make margin  deposits  in connection  with  its use  of  financial
    options  and futures, forward and spot currency contracts, swap transactions
    and other financial contracts or derivative instruments; or
 
        (3) Mortgage, pledge, or  hypothecate any of  its assets, provided  that
    this  shall not apply to  the transfer of securities  in connection with any
    permissible borrowing  or  to  collateral arrangements  in  connection  with
    permissible activities; or
 
        (4)  Borrow money except for temporary or emergency purposes (other than
    to meet redemptions). While borrowings exceed  5% of the Health Care  Fund's
    total assets it will not make any additional investments.
 
   
Investors  should refer to  the Prospectus of  the Health Care  Fund for further
information with respect to the  Health Care Fund's investment objective,  which
may  not  be  changed  without  the  approval  of  its  shareholders,  and other
investment policies, techniques  and limitations, which  may be changed  without
shareholder approval.
    
 
TELECOMMUNICATIONS FUND
   
The  Telecommunications Fund has adopted the following investment limitations as
fundamental policies, which may not be changed without the affirmative vote of a
majority of the outstanding shares of the Telecommunications Fund.
    
 
The Telecommunications Fund may not:
 
        (1) Purchase or sell real estate, except that investments in  securities
    of  issuers that  invest in real  estate and  investments in mortgage-backed
    securities,  mortgage  participations  or  other  instruments  supported  by
    interests in real estate are not subject to this limitation, and except that
    the Telecommunications Fund may exercise rights under agreements relating to
    such  securities, including the  right to enforce  security interests and to
    hold real estate  acquired by  reason of  such enforcement  until that  real
    estate can be liquidated in an orderly manner;
 
        (2)  Purchase or  sell physical commodities,  but the Telecommunications
    Fund may purchase, sell or enter into financial options and futures, forward
    and spot currency contracts, swap transactions and other financial contracts
    or derivative instruments;
 
                  Statement of Additional Information Page 26
<PAGE>
                             AIM GLOBAL TRENDS FUND
 
        (3) Engage in the business of underwriting securities of other  issuers,
    except to the extent that the Telecommunications Fund might be considered an
    underwriter  under  the  federal  securities  laws  in  connection  with its
    disposition of portfolio securities;
 
        (4) Make loans, except through loans of portfolio securities or  through
    repurchase  agreements, provided that  for purposes of  this limitation, the
    acquisition of bonds, debentures, other  debt securities or instruments,  or
    participations  or  other interests  therein  and investments  in government
    obligations, commercial paper, certificates of deposit, bankers' acceptances
    or similar instruments will not be considered the making of a loan;
 
        (5) Issue senior securities or  borrow money, except as permitted  under
    the  1940 Act and  then not in  excess of 33  1/3% of the Telecommunications
    Fund's total  assets  (including the  amount  borrowed but  reduced  by  any
    liabilities  not  constituting borrowings)  at  the time  of  the borrowing,
    except that the Telecommunications Fund may borrow up to an additional 5% of
    its total  assets  (not including  the  amount borrowed)  for  temporary  or
    emergency purposes; or
 
        (6)  Purchase securities of any one issuer if, as a result, more than 5%
    of  the  Telecommunications  Fund's  total  assets  would  be  invested   in
    securities  of that issuer or the  Telecommunications Fund would own or hold
    more than 10% of  the outstanding voting securities  of that issuer,  except
    that up to 25% of the Telecommunications Fund's total assets may be invested
    without  regard to this limitation, and except that this limitation does not
    apply to  securities  issued  or  guaranteed by  the  U.S.  government,  its
    agencies  or instrumentalities or  to securities issued  by other investment
    companies.
 
Notwithstanding any other investment policy of the Telecommunications Fund,  the
Telecommunications   Fund  may  invest  all  of  its  investable  assets  (cash,
securities and  receivables related  to securities)  in an  open-end  management
investment  company having substantially the same investment objective, policies
and limitations as the Fund.
 
   
The following  investment  policies  of  the  Telecommunications  Fund  are  not
fundamental  policies and may be changed by vote of the Underlying Trust's Board
of Trustees without shareholder approval. The Telecommunications Fund may not:
    
 
        (1) Invest in securities of an issuer if the investment would cause  the
    Telecommunications  Fund to own more than 10%  of any class of securities of
    any one issuer;
 
        (2) Invest  in  companies  for  the purpose  of  exercising  control  or
    management;
 
        (3)  Invest  more than  15% of  its net  assets in  illiquid securities,
    including securities that are illiquid by virtue of the absence of a readily
    available market;
 
        (4) Enter into a futures contract,  an option on a futures contract,  or
    an  option on foreign currency traded  on a CFTC-regulated exchange, in each
    case other than for BONA FIDE hedging purposes (as defined by the CFTC),  if
    the aggregate initial margin and premiums required to establish all of those
    positions (excluding the amount by which options are "in-the-money") exceeds
    5%  of  the liquidation  value of  the Fund's  portfolio, after  taking into
    account unrealized profits and unrealized  losses on any contracts the  Fund
    has entered into;
 
        (5)  Borrow money except for temporary or emergency purposes (other than
    to meet redemptions). While borrowings  exceed 5% of the  Telecommunications
    Fund's total assets, it will not make any additional investments;
 
        (6)  Purchase securities on margin, provided that the Telecommunications
    Fund may obtain short-term credits as may be necessary for the clearance  of
    purchases   and  sales  of   securities,  and  further   provided  that  the
    Telecommunications Fund may make margin deposits in connection with its  use
    of  financial options and futures, forward and spot currency contracts, swap
    transactions and other financial contracts or derivative instruments; or
 
        (7) Mortgage, pledge, or  hypothecate any of  its assets, provided  that
    this  shall not apply to  the transfer of securities  in connection with any
    permissible borrowing  or  to  collateral arrangements  in  connection  with
    permissible activities.
 
   
Investors  should refer  to the  Prospectus of  the Telecommunications  Fund for
further information  with respect  to the  Telecommunications Fund's  investment
objective,  which may not  be changed without the  approval of shareholders, and
other investment  policies, techniques  and limitations,  which may  be  changed
without shareholder approval.
    
 
If  a  percentage  restriction on  investment  or  utilization of  assets  in an
investment policy or  restriction is  adhered to at  the time  an investment  is
made, a later change in percentage ownership of a security or kind of securities
resulting  from changing market  values or a  similar type of  event will not be
considered a  violation  of  a  Fund's or  Portfolio's  investment  policies  or
restrictions.  A Fund or Portfolio  may exchange securities, exercise conversion
or subscription rights,  warrants or other  rights to purchase  common stock  or
other  equity securities and may hold, except  to the extent limited by the 1940
 
                  Statement of Additional Information Page 27
<PAGE>
                             AIM GLOBAL TRENDS FUND
Act, any such securities so acquired without regard to the Fund's or Portfolio's
investment policies and  restrictions. The  original cost of  the securities  so
acquired  will  be  included in  any  subsequent  determination of  a  Fund's or
Portfolio's compliance with  the investment percentage  limitations referred  to
above and in the Prospectus.
 
- --------------------------------------------------------------------------------
 
                             EXECUTION OF PORTFOLIO
                                  TRANSACTIONS
 
- --------------------------------------------------------------------------------
 
All  orders  for the  purchase  or sale  of  portfolio securities  for  the Fund
(normally shares of the Underlying Theme Funds) are placed on behalf of the Fund
by the Sub-adviser. As stated in  the Prospectus, the Sub-adviser will  exercise
no discretion in investing the assets of the Fund other than to make investments
in money market instruments and to rebalance the percentage of the Fund's assets
in each Underlying Theme Fund.
 
Subject  to policies  established by  the applicable  Board, the  Sub-adviser is
responsible for the  execution of each  Underlying Theme Portfolio's  securities
transactions  and the selection of  broker/dealers who execute such transactions
on behalf of  each Underlying  Theme Portfolio. In  executing transactions,  the
Sub-adviser  seeks the  best net  results for  each Underlying  Theme Portfolio,
taking into  account  such  factors  as  the  price  (including  the  applicable
brokerage  commission  or  dealer  spread), size  of  the  order,  difficulty of
execution and operational  facilities of  the firm involved.  Although the  Sub-
adviser  generally seeks  reasonably competitive  commission rates  and spreads,
payment of the lowest  commission or spread is  not necessarily consistent  with
the  best net results. While each Underlying  Theme Portfolio may engage in soft
dollar arrangements  for  research  services,  as described  below,  it  has  no
obligation  to deal  with any  broker/dealer or  group of  broker/dealers in the
execution of portfolio transactions.
 
   
Consistent  with  the  interests  of   each  Underlying  Theme  Portfolio,   the
Sub-adviser   may  select  broker/dealers  to   execute  that  Underlying  Theme
Portfolio's portfolio transactions on  the basis of  the research and  brokerage
services they provide to the Sub-adviser for its use in managing that Underlying
Theme  Portfolio  and its  other advisory  accounts.  Such services  may include
furnishing analyses,  reports and  information concerning  issuers,  industries,
securities, geographic regions, economic factors and trends, portfolio strategy,
and   performance  of  accounts;  and   effecting  securities  transactions  and
performing functions  incidental thereto  (such  as clearance  and  settlement).
Research  and brokerage services  received from such broker  are in addition to,
and not in lieu  of, the services  required to be  performed by the  Sub-adviser
under  investment management and administration  contracts. A commission paid to
such broker may be  higher than that which  another qualified broker would  have
charged  for  effecting  the  same transaction,  provided  that  the Sub-adviser
determines in good faith that such  commission is reasonable in terms either  of
that  particular transaction or the overall responsibility of the Sub-adviser to
the Underlying  Theme  Portfolio  and  its other  clients  and  that  the  total
commissions  paid  by  that Underlying  Theme  Portfolio will  be  reasonable in
relation to the benefits  it receive over the  long term. Research services  may
also be received from dealers who execute portfolio transactions in OTC markets.
    
 
The  Sub-adviser may allocate brokerage  transactions to broker/dealers who have
entered into arrangements under which  the broker/dealer allocates a portion  of
the  commissions paid  by an  Underlying Theme  Portfolio toward  payment of its
expenses, such as custodian fees.
 
Investment decisions for an Underlying Theme Portfolio and for other  investment
accounts  managed by  the Sub-adviser  are made  independently of  each other in
light  of   differing  conditions.   However,  the   same  investment   decision
occasionally  may  be  made for  two  or  more of  such  accounts,  including an
Underlying Theme Portfolio. In such cases, simultaneous transactions may  occur.
Purchases  or sales are then allocated as to  price or amount in a manner deemed
fair and equitable to all accounts  involved. While in some cases this  practice
could  have a detrimental effect upon the price  or value of the security as far
as an Underlying Theme  Portfolio is concerned, in  other cases the  Sub-adviser
believes that coordination and the ability to participate in volume transactions
will be beneficial to that Underlying Theme Portfolio.
 
Under  a policy adopted  by the applicable  Board, and subject  to the policy of
obtaining the best net results,  the Sub-adviser may consider a  broker/dealer's
sale  of the shares of  the Underlying Theme Funds  and the other portfolios for
which the Sub-adviser serves as investment manager or administrator in selecting
broker/dealers for the execution of portfolio transactions. This policy does not
imply a commitment to execute portfolio transactions through all  broker/dealers
that sell shares of the Underlying Theme Funds and such other portfolios.
 
                  Statement of Additional Information Page 28
<PAGE>
                             AIM GLOBAL TRENDS FUND
 
Each  Underlying  Theme Portfolio  contemplates  purchasing most  foreign equity
securities in OTC markets or stock  exchanges located in the countries in  which
the  respective principal offices  of the issuers of  the various securities are
located, if that  is the best  available market. The  fixed commissions paid  in
connection  with most such foreign stock  transactions generally are higher than
negotiated commissions on U.S. transactions. There generally is less  government
supervision  and regulation of  foreign stock exchanges and  brokers than in the
United States. Foreign security settlements may in some instances be subject  to
delays and related administrative uncertainties.
 
Foreign  equity securities may be  held by an Underlying  Theme Portfolio in the
form of ADRs,  ADSs, EDRs, CDRs  or securities convertible  into foreign  equity
securities.  ADRs, ADSs,  EDRs and  CDRs may  be listed  on stock  exchanges, or
traded in the OTC markets  in the United States or  Europe, as the case may  be.
ADRs,  like other  securities traded  in the United  States, will  be subject to
negotiated commission rates. The foreign and domestic debt securities and  money
market  instruments  in  which  an Underlying  Theme  Portfolio  may  invest are
generally traded in the OTC markets.
 
An Underlying Theme  Portfolio does  not have any  obligation to  deal with  any
broker/dealer  or  group  of  broker/dealers  in  the  execution  of  securities
transactions. Each Underlying Theme Portfolio contemplates that, consistent with
the policy of  obtaining the  best net  results, brokerage  transactions may  be
conducted  through  certain  companies  that  are  affiliated  with  AIM  or the
Sub-adviser. Both Boards have adopted  procedures in conformity with Rule  17e-1
under  the  1940 Act  to  ensure that  all  brokerage commissions  paid  to such
affiliates are reasonable and fair  in the context of  the market in which  they
are  operating. Any such transactions will  be effected and related compensation
paid only in accordance with applicable SEC regulations.
 
                  Statement of Additional Information Page 29
<PAGE>
                             AIM GLOBAL TRENDS FUND
 
                             TRUSTEES AND EXECUTIVE
                                    OFFICERS
 
- --------------------------------------------------------------------------------
 
   
The  Trust's Trustees and Executive Officers  are listed below. Unless otherwise
indicated, the address  of each Executive  Officer is 11  Greenway Plaza,  Suite
100, Houston, Texas 77046.
    
 
   
<TABLE>
<CAPTION>
NAME, POSITION(S) WITH THE                PRINCIPAL OCCUPATIONS AND BUSINESS
TRUST AND ADDRESS                         EXPERIENCE FOR PAST 5 YEARS
- ----------------------------------------  --------------------------------------------------------------------------------
<S>                                       <C>
William J. Guilfoyle*, 40                 President, GT Global, Inc. ("GT Global") since 1995; Director, GT Global since
Trustee, Chairman of the Board and        1991; Senior Vice President and Director of Sales and Marketing, GT Global from
President                                 May 1992 to April 1995; Director, Liechtenstein Global Trust AG (holding company
50 California Street                      of the various international GT companies) Advisory Board from January 1996 to
San Francisco, CA 94111                   May 1998; Director, G.T. Global Insurance Agency ("G.T. Insurance") since 1996;
                                          President and Chief Executive Officer, G.T. Insurance since 1995; Senior Vice
                                          President and Director, Sales and Marketing, G.T. Insurance from April 1995 to
                                          November 1995; Senior Vice President, Retail Marketing, G.T. Insurance from 1992
                                          to 1993; and Trustee, each of the other investment companies registered under
                                          the 1940 Act that is sub-advised or sub-administered by the Sub-adviser.
C. Derek Anderson, 57                     President, Plantagenet Capital Management, LLC (an investment partnership);
Trustee                                   Chief Executive Officer, Plantagenet Holdings, Ltd. (an investment banking
220 Sansome Street                        firm); Director, Anderson Capital Management, Inc. since 1988; Director,
Suite 400                                 PremiumWear, Inc. (formerly Munsingwear, Inc.) (a casual apparel company);
San Francisco, CA 94104                   Director, "R" Homes, Inc. and various other companies; and Trustee, each of the
                                          other investment companies registered under the 1940 Act that is sub-advised or
                                          sub-administered by the Sub-adviser.
</TABLE>
    
 
   
<TABLE>
<S>                                       <C>
Frank S. Bayley, 58                       Partner, law firm of Baker & McKenzie; Director and Chairman, C.D. Stimson
Trustee                                   Company (a private investment company); and Trustee, each of the other
Two Embarcadero Center                    investment companies registered under the 1940 Act that is sub-advised or sub-
Suite 2400                                administered by the Sub-adviser.
San Francisco, CA 94111
Arthur C. Patterson, 54                   Managing Partner, Accel Partners (a venture capital firm); Director, Viasoft and
Trustee                                   PageMart, Inc. (both public software companies) and several other privately held
428 University Avenue                     software and communications companies; and Trustee, each of the other investment
Palo Alto, CA 94301                       companies registered under the 1940 Act that is sub-advised or sub-administered
                                          by the Sub-adviser.
Ruth H. Quigley, 63                       Private investor; President, Quigley Friedlander & Co., Inc. (a financial
Trustee                                   advisory services firm) from 1984 to 1986; and Trustee, each of the other
1055 California Street                    investment companies registered under the 1940 Act that is sub-advised or sub-
San Francisco, CA 94108                   administered by the Sub-adviser.
John J. Arthur+, 53                       Director, Senior Vice President and Treasurer, A I M Advisors, Inc.; Vice
Vice President                            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. and Fund Management
                                          Company.
</TABLE>
    
 
- --------------
   
*  Mr. Guilfolye is an "interested person" of the Trust as defined by the 1940
Act due to his affiliation with the Sub-adviser.
    
 
+  Mr. Arthur and Ms. Relihan are married to each other.
 
                  Statement of Additional Information Page 30
<PAGE>
                             AIM GLOBAL TRENDS FUND
   
<TABLE>
<CAPTION>
NAME, POSITION(S) WITH THE                PRINCIPAL OCCUPATIONS AND BUSINESS
TRUST AND ADDRESS                         EXPERIENCE FOR PAST 5 YEARS
- ----------------------------------------  --------------------------------------------------------------------------------
<S>                                       <C>
Kenneth W. Chancey, 53                    Senior Vice President -- Mutual Fund Accounting, the Sub-adviser since 1997;
Vice President and                        Vice President -- Mutual Fund Accounting, the Sub-adviser from 1992-1997.
Principal Accounting Officer
50 California Street
San Francisco, CA 94111
Melville B. Cox, 54                       Vice President and Chief Compliance Officer, A I M Advisors, Inc., A I M Capital
Vice President                            Management, Inc., A I M Distributors, Inc., A I M Fund Services, Inc. and Fund
                                          Management Company.
Gary T. Crum, 50                          Director and President, A I M Capital Management, Inc.; Director and Senior Vice
Vice President                            President, A I M Management Group Inc. and A I M Advisors, Inc.; and Director,
                                          A I M Distributors, Inc. and AMVESCAP PLC.
Robert H. Graham, 51                      Director, President and Chief Executive Officer, A I M Management Group Inc.;
Vice President                            Director and President, A I M Advisors, Inc.; Director and Senior Vice
                                          President, A I M Capital Management, Inc., A I M Distributors, Inc., A I M Fund
                                          Services, Inc. and Fund Management Company; and Director, AMVESCAP PLC.
Helge K. Lee, 52                          Chief Legal and Compliance Officer -- North America, the Sub-adviser since
Vice President and Secretary              October 1997; Secretary and Chief Legal and Compliance Officer, INVESCO (NY)
50 California Street                      Asset Management, Inc., INVESCO (NY), Inc., GT Global Investor Services, Inc.
San Francisco, CA 94111                   and G.T. Insurance since August 1997; Secretary and Chief Legal and Compliance
                                          Officer, GT Global from August 1997 to April 1998; Executive Vice President of
                                          the Asset Management Division of Liechtenstein Global Trust AG, from October
                                          1996 to May 1998; Senior Vice President, General Counsel and Secretary of
                                          INVESCO (NY) Asset Management, Inc., INVESCO (NY), Inc., GT Global, GT Global
                                          Investor Services, Inc. and G.T. Insurance from May 1994 to October 1996; and
                                          Senior Vice President, General Counsel and Secretary of Strong/Corneliuson
                                          Management, Inc. and Secretary of each of the Strong Funds from October 1991 to
                                          May 1994.
Carol F. Relihan+, 43                     Director, Senior Vice President, General Counsel and Secretary, A I M Advisors,
Vice President                            Inc.; Vice President, General Counsel and Secretary, A I M Management Group
                                          Inc.; Director, Vice President and General Counsel, Fund Management Company;
                                          Vice President and General Counsel, A I M Fund Services, Inc.; and Vice
                                          President, A I M Capital Management, Inc. and A I M Distributors, Inc.
</TABLE>
    
 
<TABLE>
<S>                                       <C>
Dana R. Sutton, 39                        Vice President and Fund Controller, A I M Advisors, Inc.; and Assistant Vice
Vice President and Assistant Treasurer    President and Assistant Treasurer, Fund Management Company.
</TABLE>
 
                            ------------------------
 
   
The  Board of Trustees has  a Nominating and Audit  Committee, comprised of Miss
Quigley and Messrs.  Anderson, Bayley  and Patterson, which  is responsible  for
nominating  persons to serve as Trustees, reviewing  audits of the Trust and its
funds and recommending firms to serve as independent auditors of the Trust. Each
of the Trustees and Officers of the Trust  is also a Trustee and Officer of  AIM
Investment  Portfolios, AIM Floating Rate Fund, AIM Investment Funds, AIM Growth
Series, AIM Eastern Europe Fund, GT Global Variable Investment Trust, GT  Global
Variable  Investment  Series,  Global  Investment  Portfolio,  Growth Portfolio,
Floating Rate  Portfolio  and  Global  High Income  Portfolio,  which  also  are
registered   investment  companies  advised  by   AIM  and  sub-advised  by  the
Sub-adviser or an affiliate thereof. All  of the Trust's Trustees also serve  as
directors  or trustees of some or all of the other investment companies managed,
administered by AIM. All of the Trust's executive officers hold similar  offices
with  some or  all of  the other  investment companies  managed, administered or
advised by AIM. Each Trustee who is  not a director, officer or employee of  the
Sub-adviser  or any other affiliated company is  paid aggregate fees of $5,000 a
year, plus $300 per Fund for each meeting of the Board attended, and  reimbursed
travel  and  other  expenses  incurred in  connection  with  attendance  at such
meetings. Other  Trustees  and  Officers  receive  no  compensation  or  expense
reimbursement    from    the    Trust.    As    of    June    26,    1998,   the
 
- --------------
    
+  Mr. Arthur and Ms. Relihan are married to each other.
 
                  Statement of Additional Information Page 31
<PAGE>
                             AIM GLOBAL TRENDS FUND
Officers and  Trustees and  their families  as a  group owned  in the  aggregate
beneficially or of record less than 1% of the shares of the Fund.
 
- --------------------------------------------------------------------------------
 
   
              CONTROL PERSONS AND PRINCIPAL HOLDERS OF SECURITIES
    
 
- --------------------------------------------------------------------------------
 
   
As  of          , 1998, the trustees and  officers of the Trust as a group owned
less than 1% of all classes of outstanding shares of the Trust.
    
 
   
To the best knowledge of the Trust, the names and addresses of the holders of 5%
or more of the outstanding shares of each class of the Trust's equity securities
as of June 26, 1998, and the  percentage of the outstanding shares held by  such
holders are set forth below.
    
 
   
<TABLE>
<CAPTION>
                                                                                                                         PERCENT
                                                                                                          PERCENT       OWNED OF
                                                                                                          OWNED OF     RECORD AND
FUND                            NAME AND ADDRESS OF OWNER                                                 RECORD*     BENEFICIALLY
- ------------------------------  ----------------------------------------------------------------------  ------------  -------------
<S>                             <C>                                                                     <C>           <C>
                                [SHAREHOLDER]                                                                     %             %
</TABLE>
    
 
- --------------
   
*The Trust has no knowledge as to whether all or any portion of the shares owned
 of record are also owned beneficially.
    
 
                  Statement of Additional Information Page 32
<PAGE>
                             AIM GLOBAL TRENDS FUND
 
                                   MANAGEMENT
 
- --------------------------------------------------------------------------------
 
MANAGEMENT SERVICES RELATING TO THE FUND
AIM  serves as  the investment  manager and administrator  to the  Fund under an
investment  management  and  administration  contract  ("Management   Contract")
between  the Trust and AIM.  The Sub-adviser serves as  the sub-adviser and sub-
administrator to the Fund under  a Sub-Advisory and Sub-Administration  Contract
between  AIM and the  Sub-adviser ("Sub-Management Contract,"  and together with
the Management  Contract,  the  "Management Contracts").  Neither  AIM  nor  the
Sub-adviser receives a fee for providing management services to the Fund.
 
- --------------------------------------------------------------------------------
 
   
                             THE DISTRIBUTION PLANS
    
 
- --------------------------------------------------------------------------------
   
THE  CLASS  A AND  C  PLAN. The  Trust has  adopted  a Master  Distribution Plan
pursuant to Rule 12b-1 under  the 1940 Act relating to  the Class A and Class  C
shares  of the Fund (the "Class A and C  Plan"). The Class A and C Plan provides
that the Class A shares pay 0.50% per annum of their average daily net assets as
compensation to AIM Distributors for the purpose of financing any activity which
is primarily intended to result in the sale of Class A shares. Under the Class A
and C Plan, Class C shares of  the Fund pay compensation to AIM Distributors  at
an  annual rate of 1.00% of the average daily net assets attributable to Class C
shares. Of such amounts,  the Fund pays  a service fee of  0.25% of the  average
daily  net assets attributable to Class A and Class C shares to selected dealers
and other institutions which furnish continuing personal shareholder services to
their customers who  purchase and  own Class A  and Class  C shares.  Activities
appropriate  for financing  under the Class  A and  C Plan include,  but are not
limited to, the following: printing of prospectuses and statements of additional
information  and  reports  for  other  than  existing  shareholders;   overhead;
preparation  and  distribution  of advertising  material  and  sales literature;
expenses of organizing and conducting  sales seminars; supplemental payments  to
dealers  and other institutions such as asset-based sales charges or as payments
of  service  fees   under  shareholder  service   arrangements;  and  costs   of
administering the Class A and C Plan.
    
 
   
THE CLASS B PLAN. The Trust has also adopted a Master Distribution Plan pursuant
to  Rule 12b-1 under  the 1940 Act relating  to Class B shares  of the Fund (the
"Class B Plan,"  and collectively with  the Class  A and C  Plan, the  "Plans").
Under  the Class B  Plan, the Fund  pays compensation to  AIM Distributors at an
annual rate of 1.00%  of the average  daily net assets  attributable to Class  B
shares.  Of such  amount, the Fund  pays a service  fee of 0.25%  of the average
daily net assets attributable  to Class B shares  to selected dealers and  other
institutions  which furnish  continuing personal  shareholder services  to their
customers who purchase and own Class  B shares. Amounts paid in accordance  with
the  Class B  Plan may  be used  to finance  any activity  primarily intended to
result in the sale of Class B  shares, including but not limited to printing  of
prospectuses and statements of additional information and reports for other than
existing  shareholders;  overhead; preparation  and distribution  of advertising
material and  sales  literature; expenses  of  organizing and  conducting  sales
seminars;  supplemental  payments  to  dealers and  other  institutions  such as
asset-based sales  charges or  as  payments of  service fees  under  shareholder
service  arrangements;  and  costs  of  administering  the  Class  B  Plan.  AIM
Distributors may transfer and sell its rights to payments under the Class B Plan
in order to finance distribution expenditures in respect of Class B shares.
    
 
   
BOTH PLANS. Pursuant to  an incentive program, AIM  Distributors may enter  into
agreements  ("Shareholder Service Agreements")  with investment dealers selected
from time  to  time  by  AIM Distributors  for  the  provision  of  distribution
assistance  in connection with  the sale of  the Fund's shares  to such dealers'
customers, and for the provision of continuing personal shareholder services  to
customers  who may from time to time  directly or beneficially own shares of the
Funds. The distribution assistance and continuing personal shareholder  services
to  be rendered by dealers under the Shareholder Service Agreements may include,
but shall  not be  limited  to, the  following: distributing  sales  literature;
answering routine customer inquiries concerning the Fund; assisting customers in
changing dividend options, account designations
    
 
                  Statement of Additional Information Page 33
<PAGE>
                             AIM GLOBAL TRENDS FUND
   
and  addresses, and in enrolling in any  of the several special investment plans
offered in connection with the purchase  of the Fund's shares; assisting in  the
establishment  and  maintenance  of customer  accounts  and records  and  in the
processing of purchase and redemption transactions; investing dividends and  any
capital  gains distributions automatically  in the Fund's  shares; and providing
such other information and services as  the Fund or the customer may  reasonably
request.
    
 
   
Under  the Plans, in addition to  the Shareholder Service Agreements authorizing
payments  to  selected  dealers,  banks  may  enter  into  Shareholder   Service
Agreements  authorizing  payments under  the  Plans to  be  made to  banks which
provide services to their customers who have purchased shares. Services provided
pursuant to Shareholder Service Agreements with banks may include some or all of
the following: answering  shareholder inquiries regarding  the Fund,  performing
sub-accounting;  establishing and maintaining  shareholder accounts and records;
processing customer  purchase and  redemption transactions;  providing  periodic
statements  showing a shareholder's account balance  and the integration of such
statements with those of  other transactions and  balances in the  shareholder's
other  accounts serviced by the  bank; forwarding applicable prospectuses, proxy
statements, reports and notices to bank  clients who hold Fund shares; and  such
other  administrative services as the Fund reasonably may request, to the extent
permitted by applicable statute, rule  or regulation. Similar agreements may  be
permitted  under the Plans for institutions  which provide recordkeeping for and
administrative services to 401(k) plans.
    
 
   
Financial intermediaries and any other  person entitled to receive  compensation
for selling Fund shares may receive different compensation for selling shares of
one particular class over another.
    
 
   
Under  a Shareholder Service Agreement, the Fund agrees to pay periodically fees
to selected dealers and other institutions who render the foregoing services  to
their  customers.  The  fees  payable  under  a  Shareholder  Service  Agreement
generally will be calculated at the end of each payment period for each business
day of the Fund during  such period at the annual  rate of 0.25% of the  average
daily  net  asset  value of  the  Fund's  shares purchased  or  acquired through
exchange. Fees calculated in  this manner shall be  paid only to those  selected
dealers  or other institutions who are dealers  or institutions of record at the
close of business on the last business day of the applicable payment period  for
the account in which the Fund's shares are held.
    
 
   
Payments pursuant to the Plans are subject to any applicable limitations imposed
by  rules of the National Association  of Securities Dealers, Inc. ("NASD"). The
Plans conform to  rules of the  NASD by  limiting payments made  to dealers  and
other   financial  institutions  who  provide  continuing  personal  shareholder
services to their customers who purchase and  own shares of the Fund to no  more
than  0.25% per annum of the average  daily net assets of the funds attributable
to the customers of  such dealers or financial  institutions, and by imposing  a
cap on the total sales charges, including asset based sales charges, that may be
paid by the Fund and its respective classes.
    
 
   
AIM Distributors does not act as principal, but rather as agent for the Fund, in
making  dealer  incentive and  shareholder servicing  payments under  the Plans.
These payments are an obligation of the Fund and not of AIM Distributors.
    
 
   
Prior to  June 1,  1998,  the Fund  had adopted  a  different Rule  12b-1,  that
operated  as  a "reimbursement-type"  plan (the  "Prior Plan").  The information
provided below related to payments made under the Prior Plan, which provided for
payments to GT Global Inc.,  the distributor of the Fund  at the time the  Prior
Plan was in effect.
    
 
   
For the fiscal year ended December 31, 1997, the Fund paid the following amounts
under the Prior Plan:
    
 
   
<TABLE>
<CAPTION>
                                                                                                   % OF CLASS
                                                                                                 AVERAGE DAILY
                                                                                                   NET ASSETS
                                                                                    ----------------------------------------
                                             CLASS A        CLASS B      CLASS C*     CLASS A       CLASS B       CLASS C
                                          -------------  --------------  ---------  ------------  ------------  ------------
<S>                                       <C>            <C>             <C>        <C>           <C>           <C>
                                          $              $               $                    %             %             %
</TABLE>
    
 
                  Statement of Additional Information Page 34
<PAGE>
                             AIM GLOBAL TRENDS FUND
 
   
Actual  fees by  category paid  by the Fund  with regard  to the  Class A shares
during the year ended December 31, 1997 follows:
    
 
   
<TABLE>
<S>                                                                             <C>
CLASS A
  Advertising.................................................................  $
  Printing and mailing prospectuses, semi-annual reports and annual reports
   (other than to current shareholders).......................................  $
  Seminars....................................................................  $
  Compensation to Underwriters to partially offset other marketing expenses...  $
  Compensation to Dealers including finder's fees.............................  $
  Compensation to Sales Personnel.............................................
  Annual Report Total.........................................................  $
</TABLE>
    
 
   
Actual fees by  category paid  by the  Fund with regard  to the  Class B  shares
during the year ended December 31, 1997 as follows:
    
 
   
<TABLE>
<S>                                                                             <C>
CLASS B
  Advertising.................................................................  $
  Printing and mailing prospectuses, semi-annual reports and annual reports
   (other than to current shareholders).......................................  $
  Seminars....................................................................  $
  Compensation to Underwriters to partially offset upfront dealer commissions
   and other marketing costs..................................................  $
  Compensation to Dealers.....................................................  $
  Compensation to Sales Personnel.............................................  $
  Annual Report Total.........................................................  $
</TABLE>
    
 
   
Actual  fees by  category paid  by the Fund  with regard  to the  Class C shares
during the year ended December 31, 1997 as follows:
    
 
   
<TABLE>
<S>                                                                             <C>
CLASS C
  Advertising.................................................................  $
  Printing and mailing prospectuses, semi-annual reports and annual reports
   (other than to current shareholders).......................................  $
  Seminars....................................................................  $
  Compensation to Underwriters to partially offset upfront dealer commissions
   and other marketing costs..................................................  $
  Compensation to Dealers.....................................................  $
  Compensation to Sales Personnel.............................................  $
  Annual Report Total.........................................................  $
</TABLE>
    
 
   
The Plans require  AIM Distributors to  provide the Board  of Trustees at  least
quarterly  with a written report  of the amounts expended  pursuant to the Plans
and the purposes for  which such expenditures were  made. The Board of  Trustees
reviews  these reports  in connection with  their decisions with  respect to the
Plans.
    
 
   
As required by Rule  12b-1, the Plans and  related forms of Shareholder  Service
Agreements  were approved by the Board of  Trustees, including a majority of the
Trustees who are not "interested  persons" (as defined in  the 1940 Act) of  the
Trust  and who have no direct or indirect financial interest in the operation of
the Plans or in any agreements  related to the Plans ("Qualified Trustees").  In
approving  the  Plans in  accordance with  the requirements  of Rule  12b-1, the
trustees considered various factors  and determined that  there is a  reasonable
likelihood  that  the Plans  would  benefit each  class  of the  Fund  and their
respective shareholders.
    
 
   
The Plans do not obligate the Fund to reimburse AIM Distributors for the  actual
expenses  AIM Distributors  may incur  in fulfilling  its obligations  under the
Plans. Thus, even if AIM Distributors' actual expenses exceed the fee payable to
AIM Distributors thereunder at any given time, the Fund will not be obligated to
pay more than that fee. If AIM  Distributors' expenses are less than the fee  it
receives, AIM Distributors will retain the full amount of the fee.
    
 
   
Unless  terminated earlier in accordance with their terms, the Plans continue in
effect until  June  30,  1999,  and  each  year  thereafter,  as  long  as  such
continuance is specifically approved at least annually by the Board of Trustees,
including a majority of the Qualified Trustees.
    
 
                  Statement of Additional Information Page 35
<PAGE>
                             AIM GLOBAL TRENDS FUND
 
   
The  Plans  may be  terminated  by the  vote of  a  majority of  the Independent
Trustees, or, with respect to a particular class, by the vote a majority of  the
outstanding voting securities of that class.
    
 
   
Any change in the Plans that would increase materially the distribution expenses
paid by the applicable class requires shareholder approval; otherwise, it may be
amended  by the  Trustees, including  a majority  of the  Qualified Trustees, by
votes cast in person  at a meeting  called for the purpose  of voting upon  such
amendment.  As long as the  Plans are in effect,  the selection or nomination of
the Qualified Trustees is committed to the discretion of the Qualified Trustees.
In the event the Class A  and C Plan is amended in  a manner which the Board  of
Trustees determines would materially increase the charges paid under the Class A
and  C Plan, the Class B shares of the  Fund will no longer convert into Class A
shares of the same  Fund unless the Class  B shares, voting separately,  approve
such  amendment. If the Class B shareholders  do not approve such amendment, the
Board of Trustees will  (i) create a new  class of shares of  the Fund which  is
identical  in all material respects to the  Class A shares as they existed prior
to the implementation of the amendment and (ii) ensure that the existing Class B
shares of the Fund will be exchanged or converted into such new class of  shares
no later than the date the Class B shares were scheduled to convert into Class A
shares.
    
 
   
The  principal differences between the Class A and  C Plan, on the one hand, and
the Class B Plan,  on the other  hand, are: (i)  the Class A  and C Plan  allows
payment  to AIM Distributors  or to dealers  or financial institutions  of up to
0.50% of average daily net assets of the Class A shares of the Fund, as compared
to 1.00% of  such assets of  the Fund's Class  B shares; (ii)  the Class B  Plan
obligates  the Class B shares  to continue to make  payments to AIM Distributors
following termination of the Class B shares Distribution Agreement with  respect
to  Class B shares  sold by or  attributable to the  distribution efforts of AIM
Distributors unless there has  been a complete termination  of the Class B  Plan
(as  defined in such Plan)  and (iii) the Class  B Plan expressly authorizes AIM
Distributors to assign, transfer  or pledge its rights  to payments pursuant  to
the Class B Plan.
    
 
- --------------------------------------------------------------------------------
 
   
                                THE DISTRIBUTOR
    
 
- --------------------------------------------------------------------------------
 
   
Information  concerning  AIM Distributors  and  the continuous  offering  of the
Fund's shares is set forth in the Prospectus under the headings "How to Purchase
Shares" and  "Terms and  Conditions of  Purchase  of the  AIM Funds."  A  Master
Distribution  Agreement with AIM  Distributors relating to the  Class A, Class B
and Class  C shares  of the  Funds was  approved by  the Board  of Directors  on
      ,   199  .  Both  such  Master  Distribution  Agreements  are  hereinafter
collectively referred to as the "Distribution Agreements."
    
 
   
The Distribution Agreements provide that AIM Distributors will bear the expenses
of printing from the  final proof and distributing  the Fund's prospectuses  and
statements  of additional information  relating to public  offerings made by AIM
Distributors  pursuant  to  the   Distribution  Agreements  (other  than   those
prospectuses  and statements  of additional information  distributed to existing
shareholders of the Fund), and any  promotional or sales literature used by  AIM
Distributors  or furnished by AIM Distributors to dealers in connection with the
public offering  of the  Fund's  shares, including  expenses of  advertising  in
connection  with such public  offerings. AIM Distributors  has not undertaken to
sell any specified number of shares of any classes of the Fund.
    
 
   
AIM Distributors expects  to pay  sales commissions  from its  own resources  to
dealers and institutions who sell Class B and Class C shares of the Funds at the
time  of such sales. Payments with respect to  Class B shares will equal 4.0% of
the purchase price of the Class B shares sold by the dealer or institution,  and
will  consist of a sales commission equal to  3.75% of the purchase price of the
Class B shares sold plus an advance of the first year service fee of 0.25%  with
respect  to such shares. The  portion of the payments  to AIM Distributors under
the Class  B Plan  which  constitutes an  asset-based  sales charge  (0.75%)  is
intended  in part to permit  AIM Distributors to recoup  a portion of such sales
commissions plus  financing costs.  AIM Distributors  anticipates that  it  will
require  a  number of  years  to recoup  from Class  B  Plan payments  the sales
commissions paid to dealers and institutions in connection with sales of Class B
shares. In  the  future,  if  multiple distributors  serve  a  Fund,  each  such
distributor  (or  its  assignee or  transferee)  would  receive a  share  of the
payments under the  Class B  Plan based  on the portion  of the  Fund's Class  B
shares sold by or attributable to the distribution efforts of that distributor.
    
 
                  Statement of Additional Information Page 36
<PAGE>
                             AIM GLOBAL TRENDS FUND
 
   
AIM  Distributors may pay sales commissions to dealers and institutions who sell
Class C shares of the AIM Funds at the time of such sales. Payments with respect
to Class C shares will equal 1.00% of  the purchase price of the Class C  shares
sold  by the dealer  or institution, and  will consist of  a sales commission of
0.75% of the purchase price  of the Class C shares  sold plus an advance of  the
first  year service fee of  0.25% with respect to  such shares. AIM Distributors
will retain all payments received by it relating to Class C shares for the first
year after they are purchased. The  portion of the payments to AIM  Distributors
under the Class A and C Plan attributable to Class C shares which constitutes an
asset-based  sales charge (0.75%) is intended in part to permit AIM Distributors
to recoup a  portion of  on-going sales  commissions to  dealers plus  financing
costs,  if  any. After  the first  full  year, AIM  Distributors will  make such
payments quarterly to dealers  and institutions based on  the average net  asset
value  of Class  C shares  which are attributable  to shareholders  for whom the
dealers and institutions are designated as dealers of record.
    
 
   
The Trust (on behalf of any class of the Fund) or AIM Distributors may terminate
the Distribution Agreements on sixty (60) days' written notice without  penalty.
The  Distribution Agreements will terminate automatically  in the event of their
assignment.  In  the  event  the  Class  B  shares  Distribution  Agreement   is
terminated,  AIM Distributors would continue to  receive payments of asset based
distribution fees in respect of the  outstanding Class B shares attributable  to
the distribution efforts of AIM Distributors; provided, however, that a complete
termination  of the Class B  Plan (as defined in  such Plan) would terminate all
payments to AIM Distributors.  Termination of the Class  B Plan or  Distribution
Agreement  does  not  affect the  obligation  of  the Funds  and  their  Class B
shareholders to pay contingent deferred sales charges.
    
 
   
The following chart reflects the total sales charges paid in connection with the
sale of Class A shares of each Fund and the amount retained by GT Global,  Inc.,
the Fund's distributor prior to June 1, 1998, for the fiscal year ended December
31, 1997.
    
 
   
<TABLE>
<CAPTION>
                                                                                              1997
                                                                                 ------------------------------
                                                                                     SALES           AMOUNT
                                                                                    CHARGES         RETAINED
                                                                                 --------------  --------------
<S>                                                                              <C>             <C>
                                                                                 $               $
                                                                                 $               $
                                                                                 $               $
                                                                                 $               $
</TABLE>
    
 
   
The following chart reflects the contingent deferred sales charges paid by Class
A,  Class B and Class shareholders for  the fiscal year ended December 31, 1997,
for Class A, Class B and Class C shares:
    
 
   
<TABLE>
<CAPTION>
                                                                              1997         1996         1995
                                                                           -----------  -----------  -----------
<S>                                                                        <C>          <C>          <C>
Class A..................................................................  $            $            $
Class B..................................................................  $            $            $
Class C..................................................................  $            $            $
</TABLE>
    
 
TRANSFER AGENCY AND ACCOUNTING AGENCY SERVICES
   
The Transfer Agency  and Service  Agreement between  the Trust  and A  I M  Fund
Services,  Inc. ("AFS"), a registered transfer agent and wholly-owned subsidiary
of AIM, provides that AFS will perform certain shareholder services for the Fund
for a  fee per  account  serviced. The  Transfer  Agency and  Service  Agreement
provides  that AFS will receive a per account fee plus out-of-pocket expenses to
process orders for purchases, redemptions  and exchanges of shares; prepare  and
transmit payments for dividends and distributions declared by the Fund; maintain
shareholder  accounts and  provide shareholders  with information  regarding the
Fund and  their  accounts. The  Transfer  Agency and  Service  Agreement  became
effective  on September 8, 1998.  The Transfer Agent is  also reimbursed for its
out-of-pocket expenses  for such  items as  postage, forms,  telephone  charges,
stationery  and  office  supplies. The  Sub-adviser  also serves  as  the Fund's
pricing and accounting agent. See  "Additional Information -- Special  Servicing
Agreement."
    
 
                  Statement of Additional Information Page 37
<PAGE>
                             AIM GLOBAL TRENDS FUND
 
                            VALUATION OF FUND SHARES
 
- --------------------------------------------------------------------------------
 
   
The net asset value per share of the Fund is normally determined daily as of the
close  of trading of the  New York Stock Exchange  ("NYSE") (generally 4:00 p.m.
Eastern time) on each  business day of  the Fund. In the  event the NYSE  closes
early  (i.e., before 4:00 p.m. Eastern time)  on a particular day, the net asset
value of the Fund  is determined as of  the close of the  NYSE on such day.  Net
asset  value  per  share is  determined  by  dividing the  value  of  the Fund's
interests in the Underlying  Theme Funds attributable to  a class, less all  its
liabilities   attributable  to  that  class,  by  the  total  number  of  shares
outstanding of that class. The value  of the Fund's interests in the  Underlying
Theme  Funds is determined  in accordance with  the procedures and methodologies
described in  the prospectus  and  statement of  additional information  of  the
Underlying Theme Funds. Determination of the Fund's net asset value per share is
made in accordance with generally accepted accounting principles.
    
 
- --------------------------------------------------------------------------------
 
   
                       HOW TO PURCHASE AND REDEEM SHARES
    
 
- --------------------------------------------------------------------------------
   
A  complete  description  of the  manner  in which  shares  of the  Fund  may be
purchased appears in the Fund's Prospectus  under the headings "How to  Purchase
Shares,"  "Terms  and Conditions  of  Purchase of  the  AIM Funds"  and "Special
Plans."
    
 
   
The sales charge  normally deducted on  purchases of  Class A shares  is sed  to
compensate  AIM  Distributors  and  participating  dealers  for  their  expenses
incurred in connections  with the  distribution of  the Fund's  Class A  shares.
Since there is little expense associated with unsolicited orders placed directly
with  AIM Distributors  by persons who,  because of their  relationship with the
Fund or  with AIM  and its  affiliates, are  familiar with  the Fund,  or  whose
programs  for purchase involve little expense (e.g.,  because of the size of the
transaction and shareholder records required), AIM Distributors believes that it
is appropriate and in the Fund's  best interests that such persons, and  certain
other persons whose purchases result in relatively low expenses of distribution,
be  permitted to purchase  Class A shares  of the Fund  through AIM Distributors
without payment of a sales charge. The  persons who may purchase Class A  shares
of  the Fund without a  sales charge are set forth  in the Fund's Prospectus. In
addition, the Fund offers programs such  as Right of Accumulation and Letter  of
Intent,  which  are described  in the  Prospectus, that  are designed  to permit
investors to aggregate purchases of different funds, or separate purchases  over
time,  in  order  to qualify  for  a lower  sales  charge rate.  See  "Terms and
Conditions of Purchase of the AIM Funds -- Reductions in Initial Sales  Charges"
in the Prospectus.
    
 
   
Class  B shares will automatically convert into Class A shares of the Fund eight
years following the end of the calendar month in which a purchase was made.  For
the purpose of calculating the holding period required for conversion of Class B
shares,  the initial issuance of Class B shares shall mean (i) the date on which
such Class B shares were issued, or (ii) for Class B shares obtained through  an
exchange,  or a  series of  exchanges, the  date on  which the  original Class B
shares were  issued. For  purposes of  conversion  to Class  A, Class  B  shares
purchased  through the reinvestment of dividends and other distributions paid in
respect of Class B shares will be held in a separate sub-account. Each time  any
Class  B shares in  the shareholder's regular  account (other than  those in the
sub-account) convert to Class A, a pro rata portion of the Class B shares in the
sub-account will also convert to Class A. The portion will be determined by  the
ratio  that the shareholder's Class B shares  converting to Class A bears to the
shareholder's total  Class B  shares not  acquired through  dividends and  other
distributions.
    
 
   
The  availability  of  the  conversion  feature  is  subject  to  the continuing
availability of an opinion of counsel to the effect that the dividends and other
distributions  paid  on  Class  A  and  Class  B  shares  will  not  result   in
"preferential  dividends" under the  Internal Revenue Code  (the "Code") and the
conversion  of   shares  does   not   constitute  a   taxable  event.   If   the
    
 
                  Statement of Additional Information Page 38
<PAGE>
                             AIM GLOBAL TRENDS FUND
   
conversion  feature ceased to be available, the Class B shares beyond the eighth
year. AIM and the Sub-adviser has no  reason to believe that this condition  for
the availability of the conversion feature will not be met.
    
 
   
Class  A shares that are subject to  a contingent deferred sales charge and that
were purchased before June  1, 1998 are entitled  to the following waivers  from
the  contingent deferred sales charge otherwise due upon redemption: (1) minimum
required distributions made in connection with  an IRA, Keogh Plan or  custodial
account  under Section  403(b) of  the Code  or other  retirement plan following
attainment of age  70 1/2;  (2) total or  partial redemptions  resulting from  a
distribution   following   retirement   in   the   case   of   a   tax-qualified
employer-sponsored retirement  plan;  (3)  when  a  redemption  results  from  a
tax-free  return of an excess contribution  pursuant to Section 408(d)(4) or (5)
of the Code or  from the death  or disability of  the employee; (4)  redemptions
pursuant  to a Fund's right to  liquidate a shareholder's account involuntarily;
(5)   redemptions    pursuant   to    distributions   from    a    tax-qualified
employer-sponsored  retirement plan, which  is invested in  AIM Funds, which are
permitted to be made without penalty  pursuant to the Code, other than  tax-free
rollovers  or transfers of assets,  and the proceeds of  which are reinvested in
AIM  Funds;  (6)  redemptions  made  in  connection  with   participant-directed
exchanges between options in an employer-sponsored benefit plan; (7) redemptions
made  for the purpose  of providing cash  to fund a  loan to a  participant in a
tax-qualified retirement  plan;  (8)  redemptions  made  in  connection  with  a
distribution from any retirement plan or account that is permitted in accordance
with  the  provisions  of Section  72(t)(2)  of  the Code,  and  the regulations
promulgated thereunder; (9) redemptions made  in connection with a  distribution
from  any  retirement plan  or account  that  involves the  return of  an excess
deferral amount pursuant to Section 401(k)(8) or Section 402(g)(2) of the  Code;
(10)  redemptions  made  in  connection with  a  distribution  from  a qualified
profit-sharing or stock bonus plan described in Section 401(k) of the Code to  a
participant  or  beneficiary under  Section  401(k)(2)(B)(IV) of  the  Code upon
hardship of the  covered employee  (determined pursuant  to Treasury  Regulation
Section  1.401(k)-1(d)(2)); and (11)  redemptions made by or  for the benefit of
certain states, counties  or cities,  or any  instrumentalities, departments  or
authorities  thereof where such entities are prohibited or limited by applicable
law from paying a sales charge or commission.
    
 
   
Class B and  Class C shares  purchased before June  1, 1998 are  subject to  the
following  waivers from the contingent deferred  sales charge otherwise due upon
redemption in  addition to  the waivers  provided for  redemptions of  currently
issued  Class B and Class C shares as  described in the Prospectus: (1) total or
partial redemptions resulting  from a distribution  following retirement in  the
case  of  a tax-qualified  employer-sponsored  retirement; (2)  minimum required
distributions made in connection  with an IRA, Keogh  Plan or custodial  account
under  Section 403(b) of the Code  or other retirement plan following attainment
of age 70 1/2;  (3) a one-time reinvestment  in Class B or  Class C shares of  a
Fund  within  180  days  of  a prior  redemption;  (4)  redemptions  pursuant to
distributions from a tax-qualified employer-sponsored retirement plan, which  is
invested  in AIM Funds, which are permitted  to be made without penalty pursuant
to the  Code, other  than tax-free  rollovers or  transfers of  assets, and  the
proceeds  of  which  are  reinvested  in  AIM  Funds;  (5)  redemptions  made in
connection  with   participant-directed   exchanges  between   options   in   an
employer-sponsored  benefit  plan;  (6)  redemptions  made  for  the  purpose of
providing cash to  fund a loan  to a participant  in a tax-qualified  retirement
plan; (7) redemptions made in connection with a distribution from any retirement
plan  or account that is permitted in  accordance with the provisions of Section
72(t)(2)  of  the  Code,  and   the  regulations  promulgated  thereunder;   (8)
redemptions   made  in   connection  with   a  distribution   from  a  qualified
profit-sharing or stock bonus plan described in Section 401(k) of the Code to  a
participant  or  beneficiary under  Section  401(k)(2)(B)(IV) of  the  Code upon
hardship of the  covered employee  (determined pursuant  to Treasury  Regulation
Section  1.401(k)-1(d)(2)); and  (9) redemptions made  by or for  the benefit of
certain states, counties  or cities,  or any  instrumentalities, departments  or
authorities  thereof where such entities are prohibited or limited by applicable
law from paying a sales charge or commission.
    
 
   
For purposes of  a Letter  of Intent  entered into prior  to June  1, 1998,  any
registered  investment  adviser, trust  company or  bank trust  department which
exercises investment  discretion and  which intends  within thirteen  months  to
invest  $500,000 or more can be treated  as a single purchaser, provided further
that such  entity places  all  purchases and  redemption orders.  Such  entities
should be prepared to establish their qualifications for such treatment.
    
 
   
Complete  information concerning the method of exchanging shares of the Fund for
shares of the other AIM Funds is  set forth in the Prospectus under the  heading
"Exchange Privilege."
    
 
   
Information  concerning  redemption of  the Fund's  shares is  set forth  in the
Prospectus under the heading "How to  Redeem Shares." In addition to the  Fund's
obligation  to redeem shares, AIM Distributors  may also repurchase shares as an
accommodation to shareholders. To  effect a repurchase,  those dealers who  have
executed  Selected Dealer Agreements with AIM  Distributors must phone orders to
the order desk  of the  Fund at  (800) 959-4246  and guarantee  delivery of  all
required  documents in  good order.  A repurchase is  effected at  the net asset
value per  share of  the Fund  next  determined after  the repurchase  order  is
received.  Such  an arrangement  is  subject to  timely receipt  by  A I  M Fund
Services, Inc., the
    
 
                  Statement of Additional Information Page 39
<PAGE>
                             AIM GLOBAL TRENDS FUND
   
Fund's transfer  agent,  of  all  required documents  in  good  order.  If  such
documents  are not received within a reasonable  time after the order is placed,
the order is subject to  cancellation. While there is  no charge imposed by  the
Fund or by AIM Distributors (other than any applicable contingent deferred sales
charge)  when  shares are  redeemed or  repurchased, dealers  may charge  a fair
service fee for handling the transaction.
    
 
   
The right of redemption may be suspended  or the date of payment postponed  when
(a)  trading on the  NYSE is restricted,  as determined by  applicable rules and
regulations of the SEC, (b) the NYSE is closed for other than customary  weekend
and 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  a  Fund  not  reasonably
practicable.
    
 
   
QUALIFYING FOR A REDUCED FRONT-END SALES CHARGE. As described in the Prospectus,
the  front-end sales charge for  Class A shares is  calculated by multiplying an
investor's total investment by the applicable sales charge rate. The  applicable
rate  varies with the amount invested. The Fund offers programs such as Right of
Accumulation and Letter of  Intent, which are described  in the Prospectus,  and
are  designed to permit investors to  aggregate purchases of different funds, or
separate purchases over time, in order to qualify for a lower sales charge rate.
See "Terms and Conditions of Purchase of the AIM Funds -- Reductions In  Initial
Sales Charges" in the Prospectus.
    
 
   
PROGRAMS  AND SERVICES FOR SHAREHOLDERS. The  Funds provide certain services for
shareholders and  certain  investment  or  redemption  programs.  See  "Exchange
Privilege"  and  "How  to  Redeem  Shares"  in  the  Prospectus.  All  inquiries
concerning these programs should be made directly to A I M Fund Services,  Inc.,
P.O. Box 4739, Houston, Texas 77210-4739, toll free at (800) 959-4246.
    
 
   
DIVIDEND  ORDER.  Dividends may  be paid  to someone  other than  the registered
owner, or sent to an address other than the address of record. (Please note that
signature guarantees are required to effect  this option.) An investor also  may
direct  that his or her dividends be invested  in one of the other AIM Funds and
there is  no sales  charge for  these investments;  Initial Investment  minimums
apply.   See  "Dividends,  Distributions  and   Tax  Matters  --  Dividends  and
Distributions" in the  Prospectus. To  effect this option,  please contact  your
authorized  dealer. For  more information  concerning AIM  Funds other  than the
Fund, please obtain a current  prospectus by contacting your authorized  dealer,
by  writing  to  A  I M  Fund  Services,  Inc., P.O.  Box  4739,  Houston, Texas
77210-4739, or by calling toll free (800) 959-4246.
    
 
- --------------------------------------------------------------------------------
 
                                     TAXES
 
- --------------------------------------------------------------------------------
 
TAXATION OF THE FUND
   
To continue to qualify for treatment  as a regulated investment company  ("RIC")
under  the Code, the Fund  must distribute to its  shareholders for each taxable
year at least 90% of its investment company taxable income (consisting generally
of net  investment  income  and  net  short-term  capital  gain)  ("Distribution
Requirement")  and must meet several additional requirements. These requirements
include the following: (1) the Fund must derive at least 90% of its gross income
each taxable year from dividends, interest, payments with respect to  securities
loans  and gains  from the  sale or  other disposition  of securities,  or other
income derived with respect to its business of investing in securities; and  (2)
the Diversification Requirements.
    
 
The  Fund will invest its  assets in shares of  the Underlying Theme Funds, cash
and money market  instruments. Accordingly,  the Fund's income  will consist  of
distributions  from  the Underlying  Theme Funds,  net  gains realized  from the
disposition of Underlying Theme Fund shares and interest. If an Underlying Theme
Fund qualifies for treatment as a RIC under the Code -- each has done so for its
past taxable years and intends to continue  to do so for its current and  future
taxable years -- (1) dividends paid to the Fund from the Underlying Theme Fund's
investment  company taxable  income (which  may include  net gains  from certain
foreign currency transactions) will be taxable to the Fund as ordinary income to
the extent  of  the  Underlying  Theme  Fund's  earnings  and  profits  and  (2)
distributions paid to the Fund from the Underlying Theme Fund's net capital gain
(the  excess of  net long-term capital  gain over net  short-term capital loss),
when designated as such, will be taxable to the Fund as long-term capital gains,
regardless of how long the Fund has held the Underlying Theme Fund's shares.  If
shares  of an Underlying Theme Fund are purchased within 30 days before or after
redeeming at  a  loss, other  shares  of  that Underlying  Theme  Fund  (whether
pursuant to a rebalancing of the Fund's
 
                  Statement of Additional Information Page 40
<PAGE>
                             AIM GLOBAL TRENDS FUND
portfolio  or otherwise) all or a part of the loss will not be deductible by the
Fund and instead will increase its basis for the newly purchased shares.
 
Although an Underlying Theme Fund will be eligible to elect to "pass-through" to
its shareholders (including the Fund) the benefit of the foreign tax credit with
respect to any foreign and  U.S. possessions income taxes  it pays if more  than
50%  in the value of its total assets  at the close of any taxable year consists
of securities of foreign  corporations, the Fund will  not qualify to pass  that
benefit  through to  its shareholders because  of its inability  to satisfy that
asset test.
 
The Fund will be subject to a nondeductible 4% excise tax to the extent it fails
to distribute by the end of any calendar year substantially all of its  ordinary
income  for that year and capital gain net income for the one-year period ending
on October 31 of that year, plus certain other amounts.
 
TAXATION OF THE FUND'S SHAREHOLDERS
Dividends  and  other  distributions  declared  by  the  Fund,  and  payable  to
shareholders  of record as  of a date,  in October, November  or December of any
year will  be  deemed  to have  been  paid  by  the Fund  and  received  by  the
shareholders  on December 31 of  that year if the  distributions are paid by the
Fund during  the following  January. Accordingly,  those distributions  will  be
taxed to shareholders for the year in which that December 31 falls.
 
   
If  Fund shares are sold at a loss after  being held for six months or less, the
loss will be treated  as long-term, instead of  short-term, capital loss to  the
extent  of any  capital gain distributions  received on  those shares. Investors
also should be aware that if shares are purchased shortly before the record date
for any dividend or other distribution, the shareholder will pay full price  for
the shares and receive some portion of the price back as a taxable distribution.
    
 
Dividends  paid by the Fund to a shareholder  who, as to the United States, is a
nonresident alien individual, nonresident alien fiduciary of a trust or  estate,
foreign  corporation  or foreign  partnership ("foreign  shareholder") generally
will be subject to U.S. withholding tax (at a rate of 30% or lower treaty rate).
Withholding will not apply, however, to a dividend paid by the Fund to a foreign
shareholder that is "effectively connected with  the conduct of a U.S. trade  or
business,"  in which case the  reporting and withholding requirements applicable
to domestic shareholders will apply. A  distribution of net capital gain by  the
Fund  to a foreign shareholder generally will  be subject to U.S. federal income
tax (at the rates  applicable to domestic persons)  only if the distribution  is
"effectively  connected" or  the foreign  shareholder is  treated as  a resident
alien individual for federal income tax purposes.
 
The foregoing  is a  general  and abbreviated  summary  of certain  federal  tax
considerations  affecting the Fund and its  shareholders. Investors are urged to
consult their own tax advisers for more detailed information and for information
regarding any  foreign,  state  and  local  taxes  applicable  to  distributions
received from the Fund.
 
                  Statement of Additional Information Page 41
<PAGE>
                             AIM GLOBAL TRENDS FUND
 
                             ADDITIONAL INFORMATION
 
- --------------------------------------------------------------------------------
 
SPECIAL SERVICING AGREEMENT
   
Subject  to the receipt of  an exemptive order from  the Securities and Exchange
Commission, a  Special Servicing  Agreement (the  "Service Agreement")  will  be
entered  into among AIM,  the Sub-adviser, the Underlying  Theme Funds, AFS, and
the Trust.  The Service  Agreement will  provide that,  if the  officers of  any
Underlying  Theme  Fund, at  the  direction of  the  Trust's Board  of Trustees,
determine that the aggregate  expenses of the Fund  are less than the  estimated
savings  to  the Underlying  Theme  Fund from  the  operation of  the  Fund, the
Underlying Theme Fund  will bear  those expenses  in proportion  to the  average
daily  value of its  shares owned by  the Fund and/or  the number of shareholder
accounts at the Fund. No Underlying Theme Fund will bear such expenses in excess
of the estimated savings  to it. Such savings  are expected to result  primarily
from  the elimination  of numerous  separate shareholder  accounts which  are or
would have  been  invested  directly  in the  Underlying  Theme  Funds  and  the
resulting  reduction  in  shareholder  servicing  costs.  In  this  regard,  the
shareholder servicing  costs to  any  Underlying Theme  Fund for  servicing  one
account  registered to the  Trust would be  significantly less than  the cost to
that same Underlying Theme Fund of servicing the same pool of assets contributed
in the typical fashion by a large group of individual shareholders owning  small
accounts in each Underlying Theme Fund. If the Fund's costs exceed the aggregate
estimated  savings to the  Underlying Theme Funds, the  Sub-adviser will pay the
excess on behalf of the Fund.
    
 
Rule 12b-1 distribution and service fees will not be paid in accordance with the
Service Agreement. Nor will certain non-recurring and extraordinary expenses  be
payable  in accordance therewith including: the fees and costs of actions, suits
or proceedings and any  penalties or damages in  connection therewith, to  which
the  Trust and/or the Fund may  incur directly, or may incur  as a result of its
legal obligation  to  provide  indemnification to  its  officers,  trustees  and
agents;  the fees and costs  of any governmental investigation  and any fines or
penalties in  connection therewith;  and any  federal, state  or local  tax,  or
related  interest penalties  or additions  to tax,  incurred, for  example, as a
result of the Trust's  failure to distribute  all of its  income and gains,  its
failure  to qualify  as a  RIC under  the Code,  or failure  to timely  file any
required tax  returns or  other filings.  Amounts not  payable pursuant  to  the
Service Agreement will be paid by the Fund.
 
AIM  was organized in 1976, and along  with its subsidiaries, manages or advises
approximately 90 investment  company portfolios  encompassing a  broad range  of
investment  objectives.  AIM is  a  direct, wholly  owned  subsidiary of  A  I M
Management Group  Inc.  ("AIM Management"),  a  holding company  that  has  been
engaged  in  the  financial  services  business  since  1976.  AIM  is  the sole
shareholder  of  the  Funds'   principal  underwriter,  AIM  Distributors.   AIM
Management is an indirect wholly owned subsidiary of AMVESCAP PLC, 11 Devonshire
Square,  London, EC2M  4YR, England.  AMVESCAP PLC  and its  subsidiaries are an
independent investment management group that  has a significant presence in  the
institutional  and retail segment of the investment management industry in North
America and Europe, and a growing presence in Asia.
 
CUSTODIAN
State Street Bank and Trust Company, 225 Franklin Street, Boston,  Massachusetts
02110,  acts as  custodian of  the Fund's  and the  Underlying Theme Portfolios'
assets.
 
INDEPENDENT ACCOUNTANTS
   
The Trust's  independent accountants  are                                      .
                        conducts   annual   audits  of   the   Fund's  financial
statements, assists in the  preparation of the Fund's  federal and state  income
tax  returns and consults with the Trust as to matters of accounting, regulatory
filings, and federal and state income taxation.
    
 
   
The audited financial  statements of  the Trust  included in  this Statement  of
Additional Information have been examined by                         , as stated
in  their  opinion appearing  herein,  and are  included  in reliance  upon such
opinion given  upon the  authority of  that firm  as experts  in accounting  and
auditing.
    
 
SHAREHOLDER LIABILITY
Under  Delaware law, the shareholders of the Trust enjoy the same limitations of
liability extended to shareholders of private, for-profit corporations. There is
a remote possibility, however, that under certain circumstances shareholders  of
the  Trust may be  held personally liable for  the Trust's obligations. However,
the Trust Agreement disclaims shareholder
 
                  Statement of Additional Information Page 42
<PAGE>
                             AIM GLOBAL TRENDS FUND
liability for acts or obligations of the Trust and requires that notice of  such
disclaimer  be given in each agreement, obligation or instrument entered into or
executed  by  the  Trust  or  a  trustee.  The  Trust  Agreement  provides   for
indemnification  from  the Trust  property for  all losses  and expenses  of any
shareholder held personally liable for  the Trust's obligations. Thus, the  risk
of  a  shareholder incurring  financial  loss on  account  of such  liability is
limited to circumstances in which the Trust  itself would be unable to meet  its
obligations  and  where  the  other  party  was held  not  to  be  bound  by the
disclaimer.
 
NAME
Prior to  May 29,  1998, the  Fund  operated under  the name  of GT  Global  New
Dimension Fund.
 
- --------------------------------------------------------------------------------
 
                               INVESTMENT RESULTS
 
- --------------------------------------------------------------------------------
 
   
TOTAL RETURN QUOTATIONS
    
   
The  standard  formula  for  calculating  total  return,  as  described  in  the
Prospectus, is as follows:
    
 
   
                          P(1+T)to the power of n=ERV
    
 
   
<TABLE>
<S>        <C>        <C>        <C>
Where      P              =      a hypothetical initial payment of $1,000.
           T              =      average annual  total return  (assuming  the applicable  maximum sales  load  is
                                 deducted at the beginning of the 1, 5, or 10 year periods).
           n              =      number of years.
           ERV            =      ending redeemable value of a hypothetical $1,000 payment at the end of the 1, 5,
                                 or 10 year periods (or fractional portion of such period).
</TABLE>
    
 
   
Standard  total  return  quotes  may  be  accompanied  by  total  return figures
calculated by alternative methods. For example, average annual total return  may
be  calculated without assuming payment of the  full sales load according to the
following formula:
    
 
   
                          P(1+U)to the power of n=ERV
    
 
   
<TABLE>
<S>        <C>        <C>        <C>
Where      P              =      a hypothetical initial payment of $1,000.
           U              =      average annual total  return assuming payment  of only a  stated portion of,  or
                                 none  of,  the applicable  maximum sales  load  at the  beginning of  the stated
                                 period.
           n              =      number of years.
           ERV            =      ending redeemable  value of  a hypothetical  $1,000 payment  at the  end of  the
                                 stated period.
</TABLE>
    
 
   
Cumulative total return across a stated period may be calculated as follows:
    
 
   
                          P(1+V)to the power of n=ERV
    
 
   
<TABLE>
<S>        <C>        <C>        <C>
Where      P              =      a hypothetical initial payment of $1,000.
           V              =      cumulative total return assuming payment of all of, a stated portion of, or none
                                 of, the applicable maximum sales load at the beginning of the stated period.
           n              =      number of years.
           ERV            =      ending  redeemable value  of a  hypothetical $1,000  payment at  the end  of the
                                 stated period.
</TABLE>
    
 
   
The cumulative total returns for the Class A, Class B and Class C shares of  the
Fund for the period shown, were:
    
 
   
<TABLE>
<CAPTION>
PERIOD                                                                                           CLASS A      CLASS B      CLASS C
- ---------------------------------------------------------------------------------------------  -----------  -----------  -----------
<S>                                                                                            <C>          <C>          <C>
Fiscal year ended December 31, 1997..........................................................            %            %            %
</TABLE>
    
 
                  Statement of Additional Information Page 43
<PAGE>
                             AIM GLOBAL TRENDS FUND
 
   
PERFORMANCE INFORMATION
    
   
Total  return and yield figures  for the Fund are  neither fixed nor guaranteed,
and  the  Fund's  principal  is  not  insured.  Performance  quotations  reflect
historical information and should not be considered representative of the Fund's
performance  for any period in the future. Performance is a function of a number
of factors which can be expected to fluctuate. The Fund may provide  performance
information  in reports, sales literature and advertisements. The Fund may also,
from time  to time,  quote information  about  the Fund  published or  aired  by
publications or other media entities which contain articles or segments relating
to  investment results or other data about  the Fund. Such publications or media
entities may include the following, among others:
    
 
   
Advertising Age
Barron's
Best's Review
Broker World
Business Week
Changing Times
Christian Science Monitor
CNBC
CNN
Consumer Reports
    
   
Economist
EuroMoney
FACS of the Week
Financial Planning
    
   
Financial Product News
    
 
   
Financial Services Week
Financial World
    
   
Forbes
Fortune
Global Finance
Hartford Courant Inc.
Insurance Forum
Institutional Investor
Insurance Week
Investor's Daily
Journal of the American
    
   
  Society of CLU & ChFC
    
   
Kiplinger Letter
Money
    
 
   
Mutual Fund Forecaster
Mutual Fund Magazine
Nation's Business
New York Times
PBS
Pension World
Pensions & Investments
Personal Investor
Philadelphia Inquirer
Smart Money
USA Today
U.S. News & World Report
Wall Street Journal
Washington Post
    
 
   
The Fund and AIM  Distributors may from time  to time, in advertisements,  sales
literature and reports furnished to present or prospective shareholders, compare
the  Fund with the  following, or compare the  Fund's performance to performance
data of similar mutual funds as published in the following, among others:
    
 
   
Bank Rate National Monitor Index
Bear Stearns Foreign Bond Index
Bond Buyer Index
CDA/Wiesenberger Investment Company Services
  (data and mutual fund rankings and
  comparisons)
CNBC/Financial News Composite Index
COFI
Consumer Price Index
Datastream
Donoghue's
Dow Jones Industrial Average
EAFE Index
First Boston High Yield Index
Fitch (publications)
Ibbotson Associates International Bond Index
International Bank for Reconstruction and
  Development (publications)
International Finance Corporation Emerging
  Markets Database
International Financial Statistics
Lehman Bond Indices
Lipper Analytical Data Services, Inc. (data and
  mutual fund rankings and comparisons)
Micropal, Inc. (data and mutual fund rankings
  and comparisons)
    
   
Moody's Investors Service (publications)
Morgan Stanley Capital International All
  Country (AC) World Index
Morgan Stanley Capital International World
  Indices
Morningstar, Inc. (data and mutual fund rankings
  and comparisons)
NASDAQ
Organization for Economic Cooperation and
  Development (publications)
Salomon Brothers Global Telecommunications
  Index
Salomon Brothers World Government Bond
  Index-Non-U.S.
Salomon Brothers World Government Bond Index
Standard & Poor's (publications)
Standard & Poor's 500 Composite Stock Price
  Index
Stangar
Wilshire Associates
World Bank (publications and reports)
The World Bank Publication of Trends in
  Developing Countries
Worldscope
    
 
                  Statement of Additional Information Page 44
<PAGE>
                             AIM GLOBAL TRENDS FUND
 
   
The Fund may also  compare its performance to  rates on Certificates of  Deposit
and other fixed rate investments such as the following:
    
 
   
         10-year Treasuries
       30-year Treasuries
       30-day Treasury Bills
    
 
   
Information   relating  to   foreign  market   performance,  capitalization  and
diversification is based on sources believed  to be reliable but may be  subject
to  revision  and  has  not  been independently  verified  by  the  Fund  or AIM
Distributors. Advertising for the Fund may from time to time include discussions
of general economic conditions and interest rates. Advertising for the Fund  may
also include reference to the use of the Fund as part of an individual's overall
retirement  investment  program.  From  time to  time,  sales  literature and/or
advertisements for the Fund may disclose (i) the largest holdings in the  Fund's
portfolio, (ii) certain selling group members and/or (iii) certain institutional
shareholders.
    
 
   
From time to time, the Fund's sales literature and/or advertisements may discuss
generic topics pertaining to the mutual fund industry. This includes, but is not
limited  to,  literature  addressing  general  information  about  mutual funds,
variable  annuities,  dollar-cost  averaging,  stocks,  bonds,  money   markets,
certificates   of  deposit,  retirement,  retirement  plans,  asset  allocation,
tax-free investing, college planning, and inflation.
    
 
   
Although performance data may be useful to prospective investors when  comparing
a Fund's performance with other funds and other potential investments, investors
should  note  that  the  methods of  computing  performance  of  other potential
investments are not necessarily comparable to the methods employed by a Fund.
    
 
GENERAL INFORMATION ABOUT THE UNDERLYING THEME PORTFOLIOS
Each Underlying Theme  Portfolio may invest  worldwide across industries  within
the Portfolio's area of concentration without national or regional restrictions.
The ability of each Underlying Theme Portfolio to invest worldwide may allow the
portfolio managers to select industries in different economic cycles and varying
stages  of development, though there  is no assurance that  the managers will be
successful in this selection.
 
Each Underlying Theme Portfolio's area of concentration reflects the  underlying
theme of the Portfolio. AIM Distributors believes that there are certain social,
political  and economic trends that may benefit one or more industries within an
Underlying Theme  Portfolio's area  of  concentration. Of  course, there  is  no
assurance that any of the Funds will benefit as a result.
 
HEALTH CARE FUND
From time to time the Fund and AIM Distributors will quote information including
data regarding:
 
    / / Trading  volume, number of listed companies and the largest companies of
        the global health care industry
 
    / / Expenditures by various countries, regions and age groups on health care
 
    / / Population of countries, regions and age groups
 
    / / Natality and  mortality  rates in  various  regions, countries  and  age
        groups
 
    / / Life expectancy rates in various regions, countries and age groups
 
    / / New health care products and products seeking approval
 
    / / Health maintenance organizations (HMOs) and their enrollment growth
 
    / / Studies  from,  but not  limited  to, the  American  Medical Association
        showing the effectiveness of using drugs to cure illness
 
    / / Medical technology and devices in use or in development
 
    / / Regulatory environment of health care industries
 
    / / Consolidation in the health care industries
 
The information quoted has  not been independently verified  by the Fund or  AIM
Distributors  and will be based on data provided that is believed to be reliable
and accurate from sources including the following:
 
    / / Research firms such  as Mehta and  Isaly which publishes  PHARMACEUTICAL
        PORTFOLIO RECOMMENDATIONS
 
    / / OECD  and its publications such as the OECD HEALTH DATA, as supplemented
        annually
 
    / / Morgan Stanley Capital International stock market industry indices  such
        as Health & Personal Care
 
                  Statement of Additional Information Page 45
<PAGE>
                             AIM GLOBAL TRENDS FUND
 
    / / The  World  Bank  and its  publications  such as  THE  WORLD DEVELOPMENT
        REPORT, as supplemented annually
 
    / / IFC and publications such as the EMERGING STOCK MARKETS FACTBOOK
 
INFORMATION ABOUT THE GLOBAL HEALTH CARE INDUSTRIES
The Fund and the Sub-adviser believe that certain market and demographic factors
merit  an  investor's  consideration  when  making  a  health  care  investment.
Worldwide   standards  of  living  and  life  expectancy  have  increased  at  a
substantial rate. The Sub-adviser, the  investment adviser to the AIM/GT  Funds,
expects  this growth, which  works to the  general benefit of  the global health
care industry, to continue at a roughly comparable rate in the future,  although
no  assurances  can  be  given  in  this  regard.  Moreover,  according  to  the
Sub-adviser, the health care industry historically has proven to be a relatively
non-cyclical industry that continues to provide goods and services to the public
in periods of economic weakness as well as economic strength.
 
The Sub-adviser believes that  the anticipated increase  in the world's  elderly
population  could increase  demand for  health care  products and  services. For
example, according to data compiled by  the Sub-adviser, in Japan the number  of
people  age 65  and older is  expected to  grow over 100%  by the  year 2025; in
Germany, France and the U.S., the same age group should grow 40%. Similarly, the
U.S. Census Bureau predicts the  number of Americans 85  and older to double  in
the  next 30 years. From time to time,  the Fund and AIM Distributors will quote
information  including,  but  not  limited  to,  international  data   regarding
populations,   birth  rates,  mortality  rates,  life  expectancy,  health  care
expenditures, and gross  domestic product vs.  life expectancy. The  information
quoted  has not been independently verified by  the Fund or AIM Distributors and
will be based on data that is believed to be reliable and accurate.
 
TELECOMMUNICATIONS FUND
From time to time the Fund and AIM Distributors will quote information including
data regarding:
 
    / / Increased usage  of  new  technologies  such as,  but  not  limited  to,
        cellular   and  wireless  communications  in  emerging  and  established
        countries around the world
 
    / / Supply and demand of telephone equipment and services
 
    / / Regulatory environment of telecommunications industries
 
    / / Revenue, price and usage of telecommunications products and services
 
    / / Privatization and/or deregulation of telecommunications companies
 
The information quoted has  not been independently verified  by the Fund or  AIM
Distributors  and will be based on data provided that is believed to be reliable
and accurate from sources including the following:
 
    / / Salomon Brothers World Equity  Telecommunications Index, which  includes
        stock  market data about the  telecommunications industry in established
        and developing markets
 
    / / OECD  and  other  publications  from   its  subsidiaries  such  as   the
        International Telecommunications Union
 
    / / Morgan  Stanley Capital International stock market industry indices such
        as Telecommunications, Broadcasting &  Publishing and Data Processing  &
        Reproduction
 
    / / International Technology Consultants, a Washington D.C. based firm which
        publishes  reports such as EASTERN EUROPEAN  & SOVIET TELECOM REPORT and
        LATIN AMERICAN TELECOM REPORT
 
    / / Telegeography and other publications
 
DEREGULATION IN THE UNITED STATES
The United States  has been  the bellwether  for deregulation  of the  telephone
industry.  The  divestiture  of  the Bell  System  from  American  Telephone and
Telegraph has  produced competing  companies  in the  United States.  Such  U.S.
market-driven  competition has,  for example, led  to lower  costs for consumers
which in turn led to greater consumer usage and to higher industrywide revenues.
The Sub-adviser expects this scenario to  continue to benefit such companies  in
the  U.S. and  similarly to  be realized  by the  established telecommunications
companies in established economies, although no  assurances can be made in  this
regard.
 
CONSUMER PRODUCTS AND SERVICES FUND
From time to time the Fund and AIM Distributors will quote information including
data regarding:
 
    / / Trading volume, number of listed companies and the largest companies
        located around the world in the consumer products and services
        industries
 
                  Statement of Additional Information Page 46
<PAGE>
                             AIM GLOBAL TRENDS FUND
 
    / / Expenditures, demand and consumption by various countries, regions,
        income classes and age groups of consumer products and services
 
    / / Population of countries, regions and age groups
 
    / / Life expectancy rates in various regions, countries and age groups
 
    / / New consumer products and services in the development or manufacturing
        stages
 
    / / Income of various regions, countries and age groups
 
    / / Sales and sales growth of consumer products and services companies in
        their own country and abroad
 
    / / Sales, supply and demand of consumer products and services
 
    / / Parent companies and the products and services they distribute
 
    / / Regulatory environment of consumer products industries
 
The  information quoted will  not be independently  verified by the  Fund or AIM
Distributors and will be based on data provided that is believed to be  reliable
and accurate from sources including, but not limited to, the following:
 
    / / Consumer and trade groups
 
    / / Fortune magazine and other periodicals
 
    / / The World Bank and its publications
 
    / / The International Monetary Fund (IMF) and its publications
 
    / / IFC and its publications
 
    / / OECD and its publications
 
INFRASTRUCTURE FUND
From time to time the Fund and AIM Distributors may quote information including:
 
    / / Supply  and  demand of  telephone  equipment and  services, electricity,
        water, transportation, construction  materials and other  infrastructure
        related products and services
 
    / / Regulatory environment of infrastructure industries
 
    / / Quantity and costs of current and projected infrastructure projects
 
    / / Privatization of industries and companies
 
    / / New   technologies,  products   and  services   used  in  infrastructure
        industries
 
    / / Infrastructure Finance Magazine and other periodicals
 
FINANCIAL SERVICES FUND
From time to time the Fund and AIM Distributors may quote information including:
 
    / / Supply and demand of financial services
 
    / / Regulatory environment of financial service industries
 
    / / Credit ratings of U.S. and non-U.S. banks
 
    / / New technologies, products and services  used in the financial  services
        industries
 
    / / Consolidation in the financial services industries
 
RESOURCES FUND
From time to time the Fund and AIM Distributors may quote information including:
 
    / / Supply, demand and prices of natural resources
 
    / / Regulatory environment of natural resources
 
    / / Supply,   demand  and  prices  of  products  manufactured  from  natural
        resources
 
    / / New technologies, products  and services used  in the natural  resources
        industries
 
                  Statement of Additional Information Page 47
<PAGE>
                             AIM GLOBAL TRENDS FUND
 
                          DESCRIPTION OF DEBT RATINGS
 
- --------------------------------------------------------------------------------
 
DESCRIPTION OF COMMERCIAL PAPER RATINGS
Moody's  employs the designations "Prime-1" and "Prime-2" to indicate commercial
paper having the highest  capacity for timely  repayment. Issuers rated  Prime-1
(or  supporting institutions)  have a superior  ability for  repayment of senior
short-term debt obligations. Prime-1 repayment  ability will often be  evidenced
by   many  of  the  following   characteristics:  leading  market  positions  in
well-established  industries;   high  rates   of  return   on  funds   employed;
conservative  capitalization structure with moderate  reliance on debt and ample
asset protection; broad margins in earnings coverage of fixed financial  charges
and  high internal  cash generation; and  well-established access to  a range of
financial markets  and assured  sources of  alternate liquidity.  Issuers  rated
Prime-2  (or supporting  institutions) have  a strong  ability for  repayment of
senior short-term debt obligations. This normally  will be evidenced by many  of
the  characteristics cited  above but  to a  lesser degree.  Earnings trends and
coverage ratios, while sound  may be more  subject to variation.  Capitalization
characteristics,  while  still appropriate,  may  be more  affected  by external
conditions. Ample alternate liquidity is maintained.
 
S&P rates commercial paper in four categories ranging from "A-1" for the highest
quality obligations  to  "D"  for  the lowest.  A-1  --  This  highest  category
indicates  that the degree  of safety regarding timely  payment is strong. Those
issues determined to  possess extremely  strong safety  characteristics will  be
denoted  with a plus sign (+) designation. A-2 -- Capacity for timely payment on
issues with this designation  is satisfactory. However,  the relative degree  of
safety  is not as  high as for  issues designated "A-1."  A-3 -- Issues carrying
this designation have adequate capacity  for timely payment. They are,  however,
more  vulnerable  to  the  adverse  effects  of  changes  in  circumstances than
obligations carrying the higher designations. B -- Issues rated "B" are regarded
as having only  speculative capacity  for timely payment.  C --  This rating  is
assigned  to short-term debt obligations with a doubtful capacity for payment. D
- -- Debt rated "D" is  in payment default. The "D"  rating category is used  when
interest  payments or principal payments  are not made on  the date due, even if
the applicable  grace period  has not  expired, unless  S&P believes  that  such
payments will be made during such grace period.
 
DESCRIPTION OF BOND RATINGS
Moody's  rates the  long-term debt  securities issued  by various  entities from
"Aaa" to "C." Investment Grade Ratings are the first four categories:
 
        Aaa --  Best quality.  These  securities carry  the smallest  degree  of
    investment  risk and  are generally  referred to  as "gilt  edged." Interest
    payments are protected by a large  or by an 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  -- High quality by  all standards. Together with  the Aaa group they
    comprise what are generally known as high grade bonds. They are rated  lower
    than  the best bonds because margins of protection may not be as large as in
    Aaa securities  or fluctuation  of  protective elements  may be  of  greater
    amplitude  or there may  be other elements present  which make the long-term
    risk appear somewhat larger than the Aaa securities.
 
        A  --  Upper-medium-grade  obligations.   Factors  giving  security   to
    principal  and interest are considered adequate, but elements may be present
    which suggest a susceptibility to impairment sometime in the future.
 
        Baa -- Medium-grade obligations (i.e., they are neither highly protected
    nor  poorly  secured).  Interest  payments  and  principal  security  appear
    adequate  for the present but certain  protective elements may be lacking or
    may be characteristically  unreliable over  any great length  of time.  Such
    bonds   lack  outstanding  investment  characteristics   and  in  fact  have
    speculative characteristics as well.
 
        Ba -- Have speculative elements and their future cannot be considered as
    well-assured. Often the protection of interest and principal payments may be
    very moderate, and  thereby not well  safeguarded during both  good and  bad
    times  over the future. Uncertainty of  position characterizes bonds in this
    class.
 
        B  --  Generally  lack  characteristics  of  the  desirable  investment.
    Assurance  of interest  and principal  payments or  of maintenance  of other
    terms of the contract over any long period of time may be small.
 
                  Statement of Additional Information Page 48
<PAGE>
                             AIM GLOBAL TRENDS FUND
 
        Caa -- Poor  standing. Such issues  may be  in default or  there may  be
    present elements of danger with respect to principal or interest.
 
        Ca  -- Speculative in a high degree. Such issues are often in default or
    have other marked shortcomings.
 
        C -- Lowest rated  class of bonds.  Issues so rated  can be regarded  as
    having  extremely  poor  prospects  of ever  attaining  any  real investment
    standing.
 
ABSENCE OF RATING: Where no rating has been assigned or where a rating has  been
suspended  or withdrawn, it may  be for reasons unrelated  to the quality of the
issue.
 
Should no rating be assigned, the reason may be one of the following:
 
    1.  An application for rating was not received or accepted.
 
    2.  The issue or issuer belongs  to a group of securities or companies  that
       are not rated as a matter of policy.
 
    3.  There is a lack of essential data pertaining to the issue or issuer.
 
    4.    The  issue was  privately  placed, in  which  case the  rating  is not
       published in Moody's publications.
 
Suspension or withdrawal may occur if new and material circumstances arise,  the
effects of which preclude satisfactory analysis; if there is no longer available
reasonable  up-to-date data  to permit  a judgment  to be  formed; if  a bond is
called for redemption; or for other reasons.
 
Note: Moody's applies  numerical modifiers  1, 2 and  3 in  each generic  rating
classification  from Aa to B in its corporate bond rating system. The modifier 1
indicates that  the  company ranks  in  the higher  end  of its  generic  rating
category;  the  modifier 2  indicates a  mid-range ranking;  and the  modifier 3
indicates that the issue ranks in the lower end of its generic rating category.
 
S&P rates the  securities debt of  various entities in  categories ranging  from
"AAA"  to "D" according to quality. Investment  grade ratings are the first four
categories:
 
        AAA -- Highest rating. Capacity to  pay interest and repay principal  is
    extremely strong.
 
        AA  --  Very strong  capacity to  pay interest  and repay  principal and
    differs from the higher rated issues only in a small degree.
 
        A -- Has a strong capacity to pay interest and repay principal  although
    it  is  somewhat  more susceptible  to  the  adverse effects  of  changes in
    circumstances and economic conditions than debt in higher rated categories.
 
        BBB -- Regarded as  having adequate capacity to  pay interest and  repay
    principal.  Whereas  it  normally exhibits  adequate  protection parameters,
    adverse economic conditions  or changing  circumstances are  more likely  to
    lead  to a weakened capacity to pay interest and repay principal for debt in
    this category than in higher rated categories.
 
        BB, B, CCC,  CC, C  -- Debt  rated "BB," "B,"  "CCC," "CC,"  and "C"  is
    regarded,  on balance, as predominantly speculative with respect to capacity
    to pay interest  and repay  principal in accordance  with the  terms of  the
    obligation.  "BB" indicates  the lowest  degree of  speculation and  "C" the
    highest degree of speculation. While such debt will likely have some quality
    and protective characteristics, these are outweighed by large  uncertainties
    or major risk exposures to adverse conditions.
 
        BB -- Has less near-term vulnerability to default than other speculative
    issues. However, it faces major ongoing uncertainties or exposure to adverse
    business,  financial, or economic conditions  which could lead to inadequate
    capacity to meet  timely interest  and principal payments.  The "BB"  rating
    category  is also used for debt subordinated to senior debt that is assigned
    an actual or implied "BBB-" rating.
 
        B --  Has a  greater  vulnerability to  default  but currently  has  the
    capacity  to  meet  interest  payments  and  principal  repayments.  Adverse
    business, financial, or economic conditions  will likely impair capacity  or
    willingness  to pay interest and repay principal. The "B" rating category is
    also used for debt subordinated to senior debt that is assigned an actual or
    implied "BB" or "BB-" rating.
 
        CCC -- Has  a currently  identifiable vulnerability to  default, and  is
    dependent  upon favorable  business, financial,  and economic  conditions to
    meet timely payment of interest and repayment of principal. In the event  of
    adverse  business, financial,  or economic conditions,  it is  not likely to
    have the capacity  to pay  interest and  repay principal.  The "CCC"  rating
    category  is also used for debt subordinated to senior debt that is assigned
    an actual or implied "B" or "B-" rating.
 
                  Statement of Additional Information Page 49
<PAGE>
                             AIM GLOBAL TRENDS FUND
 
        CC -- Typically  applied to  debt subordinated  to senior  debt that  is
    assigned an actual or implied "CCC" rating.
 
        C  --  Typically applied  to debt  subordinated to  senior debt  that is
    assigned an actual or implied "CCC-" debt rating. The "C" rating may be used
    to cover a situation  where a bankruptcy petition  has been filed, but  debt
    service payments are continued.
 
        C1 -- Reserved for income bonds on which no interest is being paid.
 
        D -- In payment default. The "D" category is used when interest payments
    or  principal payments are not  made on the date  due even if the applicable
    grace period has not expired, unless S&P believes that such payments will be
    made during such grace period. This rating will also be used upon the filing
    of a bankruptcy petition if debt service payments are jeopardized.
 
PLUS (+) OR MINUS  (-): The ratings from  "AA" to "CCC" may  be modified by  the
addition  of a  plus or minus  sign to  show relative standing  within the major
rating categories.
 
NR:  Indicates  that  no  public  rating  has  been  requested,  that  there  is
insufficient  information on which to base a rating, or that S&P does not rate a
particular type of obligation as a matter of policy.
 
- --------------------------------------------------------------------------------
 
                              FINANCIAL STATEMENTS
 
- --------------------------------------------------------------------------------
   
The audited financial statements of the Fund as of December 31, 1997 and for the
fiscal year then ended,  and the unaudited financial  statements as of June  30,
1998 and for the six months then ended, appear on the following pages.
    
 
                  Statement of Additional Information Page 50
<PAGE>
   
                      STATEMENT OF ADDITIONAL INFORMATION
    
 
   
                            ADVISOR CLASS SHARES OF
    
 
   
                             AIM GLOBAL TRENDS FUND
    
 
   
                               11 Greenway Plaza
                                   Suite 100
                           Houston, Texas 77046-1173
                                 (713) 626-1919
    
 
   
 THIS STATEMENT OF ADDITIONAL INFORMATION IS NOT A PROSPECTUS AND IT SHOULD BE
 READ IN CONJUNCTION WITH A PROSPECTUS OF THE ABOVE-NAMED FUND, A COPY OF WHICH
      MAY BE OBTAINED FREE OF CHARGE FROM AUTHORIZED DEALERS OR BY WRITING
                           A I M DISTRIBUTORS, INC.,
                    P.O. BOX 4739, HOUSTON, TEXAS 77210-4739
                          OR BY CALLING (800) 347-4246
    
 
   
          STATEMENT OF ADDITIONAL INFORMATION DATED: SEPTEMBER 8, 1998
    
   
                RELATING TO PROSPECTUS DATED: SEPTEMBER 8, 1998
    
 
                   Statement of Additional Information Page 1
<PAGE>
- --------------------------------------------------------------------------------
 
                               TABLE OF CONTENTS
 
- --------------------------------------------------------------------------------
 
   
<TABLE>
<CAPTION>
                                                                                                                           Page No.
                                                                                                                           --------
<S>                                                                                                                        <C>
Introduction.............................................................................................................      3
General Information About the Trust......................................................................................      3
Investment Objective and Policies........................................................................................      4
Options, Futures and Currency Strategies.................................................................................      8
Risk Factors of the Underlying Theme Funds...............................................................................     17
Investment Limitations...................................................................................................     23
Execution of Portfolio Transactions......................................................................................     28
Trustees and Executive Officers..........................................................................................     29
Control Persons and Principal Holders of Securities......................................................................     32
Management...............................................................................................................     33
Valuation of Fund Shares.................................................................................................     33
How to Purchase and Redeem Shares........................................................................................     33
Taxes....................................................................................................................     34
Additional Information...................................................................................................     36
Investment Results.......................................................................................................     37
Description of Debt Ratings..............................................................................................     42
Financial Statements.....................................................................................................     44
</TABLE>
    
 
                                     [LOGO]
 
                   Statement of Additional Information Page 2
<PAGE>
                             AIM GLOBAL TRENDS FUND
 
   
                                  INTRODUCTION
    
 
- --------------------------------------------------------------------------------
 
   
This Statement of Additional Information relates to the Advisor Class shares of
AIM Global Trends Fund (the "Fund"). The Fund is a diversified series of AIM
Series Trust (the "Trust"), an open-end management investment company organized
as a Delaware business trust. The Fund seeks its investment objective by
investing substantially all of its assets in shares of the AIM Global Theme
Funds: AIM Global Consumer Products and Services Fund; AIM Global Financial
Services Fund; AIM Global Health Care Fund; AIM Global Infrastructure Fund; AIM
Global Resoures Fund; and AIM Global Telecommunications Fund (collectively, the
"Underlying Theme Funds"). A I M Advisors, Inc. ("AIM") serves as the investment
manager of and administrator for the Fund. INVESCO (NY), Inc. (the
"Sub-adviser") serves as the sub-adviser of and sub-administrator for the Fund.
    
 
   
The Trust is a series mutual fund. The rules and regulations of the Securities
and Exchange Commission (the "SEC") require all mutual funds to furnish
prospective investors certain information concerning the activities of a fund
being considered for investment. This information is included in a Prospectus
(the "Prospectus"), dated September 8, 1998, which relates to the Advisor Class
shares of the Fund. Copies of the Prospectus and additional copies of this
Statement of Additional Information may be obtained without charge by writing
the principal distributor of the Fund's shares, A I M Distributors, Inc. ("AIM
Distributors"), P.O. Box 4739, Houston, Texas 77210-4739, or by calling (800)
347-4246. Investors must receive a Prospectus before they invest in the Fund.
    
 
   
This Statement of Additional Information is intended to furnish prospective
investors with additional information concerning the Fund. Some of the
information required to be in this Statement of Additional Information is also
included in the Fund's current Prospectus, and in order to avoid repetition,
reference will be made herein to sections of the Prospectus. Additionally, the
Prospectus and this Statement of Additional Information omit certain information
contained in the Trust's 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 TRUST
    
 
- --------------------------------------------------------------------------------
 
   
THE TRUST AND ITS SHARES
    
   
The Trust was previously organized as a Massachusetts business trust named "GT
Global Series Trust," which was established on August 26, 1996 and which had one
series named "GT Global New Dimension Fund." On May 29, 1998, the Trust was
reorganized into a Delaware business trust, which was initially established on
May 7, 1998. The Trust currently consists of one series, the Fund. The Fund
currently offers four different classes of shares: Class A shares, Class B
shares, Class C shares and Advisor Class shares. From time to time the Board of
Trustees of the Trust may create new series of shares without the necessity of a
vote of the shareholders of the Trust. All historical financial and other
information contained in this Statement of Additional Information for periods
prior to May 29, 1998 relating to the Fund is that of GT Global New Dimension
Fund.
    
 
   
This Statement of Additional Information relates solely to the Advisor Class
shares of the Fund.
    
 
   
The term "majority of the outstanding shares" of the Trust, of the Fund or of a
particular class of the Fund means, respectively, the vote of the lesser of (a)
67% or more of the shares of the Trust, Fund or such class present at a meeting
of the Trust's shareholders, if the holders of more than 50% of the outstanding
shares of the Trust, the Fund or such class are present or represented by proxy,
or (b) more than 50% of the outstanding shares of the Trust, the Fund or such
class.
    
 
                   Statement of Additional Information Page 3
<PAGE>
                             AIM GLOBAL TRENDS FUND
 
   
Class A, Class B, Class C and Advisor Class shares of the Fund have equal rights
and privileges. Each share of a particular class is entitled to one vote, to
participate equally in dividends and distributions declared by the Trust's Board
of Trustees with respect to the class of the fund and, upon liquidation of the
Fund, to participate proportionately in the net assets of the Fund allocable to
such class remaining after satisfaction of outstanding liabilities of the Fund
allocable to such class. Fund shares are fully paid, non-assessable and fully
transferable when issued and have no preemptive rights and have such conversion
and exchange rights as set forth in the Prospectus and this Statement of
Additional Information. Fractional shares have proportionately the same rights,
including voting rights, as are provided for a full share.
    
 
   
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 trustees may elect all of the members of the Board of Trustees
of the Trust. In such event, the remaining holders cannot elect any trustees of
the Trust.
    
 
- --------------------------------------------------------------------------------
 
                            INVESTMENT OBJECTIVE AND
                                    POLICIES
 
- --------------------------------------------------------------------------------
 
INVESTMENT POLICIES OF THE FUND
The following supplements the information contained in the Prospectus concerning
the investment policies of the Fund.
 
U.S. GOVERNMENT SECURITIES. The Fund may invest in various direct obligations of
the U.S. Treasury and obligations issued or guaranteed by the U.S. government or
one of its agencies or instrumentalities (collectively, "U.S. government
securities"). Among the U.S. government securities that may be held by the Fund
are securities that are supported by the full faith and credit of the United
States; securities that are supported by the right of the issuer to borrow from
the U.S. Treasury; and securities that are supported solely by the credit of the
instrumentality.
 
REPURCHASE AGREEMENTS. The Fund may invest in repurchase agreements. A
repurchase agreement is a transaction in which the Fund purchases securities
from a bank or recognized securities dealer and simultaneously commits to resell
the securities to the bank or dealer on an agreed-upon date or upon demand and
at a price reflecting a market rate of interest unrelated to the coupon rate or
maturity of the purchased securities. The Fund maintains custody of the
underlying securities prior to their repurchase; thus, the obligation of the
bank or dealer to pay the repurchase price on the date agreed to is, in effect,
secured by such securities. If the value of these securities is less than the
repurchase price, plus any agreed-upon additional amount, the other party to the
agreement must provide additional collateral so that at all times the collateral
is at least equal to the repurchase price, plus any agreed-upon additional
amount. The difference between the total amount to be received upon repurchase
of the securities and the price that was paid by the Fund upon acquisition is
accrued as interest and included in its net investment income. Repurchase
agreements carry certain risks not associated with direct investments in
securities, including possible declines in the market value of the underlying
securities and delays and costs to the Fund if the other party to a repurchase
agreement becomes insolvent.
 
INVESTMENT POLICIES OF THE UNDERLYING THEME FUNDS
The following supplements the information contained in the Prospectus concerning
the investment policies and limitations of the Underlying Theme Funds. More
information about the investment policies and restrictions and the investment
limitations of each Underlying Theme Fund is set forth in the Underlying Theme
Funds' prospectus and statement of additional information.
 
   
The Underlying Theme Funds are diversified series of AIM Investment Funds (the
"Underlying Trust"), a registered open-end management investment company. The
AIM Global Consumer Products and Services Fund ("Consumer Products and Services
Fund"), AIM Global Financial Services Fund ("Financial Services Fund"), AIM
Global Infrastructure Fund ("Infrastructure Fund"), and AIM Global Resources
Fund ("Resources Fund") (each, a "Feeder Fund," and, collectively, the "Feeder
Funds") each invests all of its assets in the Global Consumer Products and
Services Portfolio, Global Financial Services Portfolio, Global Infrastructure
Portfolio and Global Resources Portfolio (each, a "Portfolio," and,
collectively, the "Portfolios"), respectively.
    
 
Each Portfolio is a subtrust (a "series") of Global Investment Portfolio (an
open-end management investment company) with an investment objective that is
identical to that of its corresponding Underlying Theme Fund. Whenever the
phrase "all of the Underlying Theme Fund's investable assets" is used herein, it
means that the only investment securities held by
 
                   Statement of Additional Information Page 4
<PAGE>
                             AIM GLOBAL TRENDS FUND
   
a Feeder Fund will be its interest in its corresponding Portfolio. A Feeder Fund
may withdraw its investment in its corresponding Portfolio at any time, if the
Underlying Trust's Board of Trustees determines that it is in the best interests
of the Feeder Fund and its shareholders to do so. Upon any such withdrawal, a
Feeder Fund's assets would be invested in accordance with the investment
policies of its corresponding Portfolio described below and in the Underlying
Theme Funds' prospectus.
    
 
The investment objective of each Feeder Fund is long-term capital growth. The
investment objectives of the AIM Global Health Care Fund ("Health Care Fund")
and the AIM Global Telecommunications Fund ("Telecommunications Fund") are
long-term capital appreciation and long-term capital growth, respectively. The
Portfolios and the Health Care Fund and the Telecommunications Fund, together,
are referred to herein as the "Underlying Theme Portfolios."
 
SELECTION OF EQUITY INVESTMENTS. With respect to the Global Resources Portfolio,
the Sub-adviser has identified four areas that it expects will create investment
opportunities: (i) improving supply/demand fundamentals, which may result in
higher commodity prices; (ii) privatization of state-owned natural resource
businesses; (iii) management which can improve production efficiencies without
correspondingly increasing commodity prices; and (iv) service companies with
emerging technologies that can enhance productivity or reduce production costs.
Of course, there is no certainty that these factors will produce the anticipated
results.
 
With respect to the Telecommunications Fund, the Sub-adviser has identified four
areas that it expects will create investment opportunities: (i) deregulation of
companies in the industry, which will allow competition to promote greater
efficiencies; (ii) privatization of state-owned telecommunications businesses;
(iii) development of infrastructure in underdeveloped countries and upgrading of
services in other countries; and (iv) emerging technologies that will enhance
productivity and reduce costs in the telecommunications industry. Of course,
there is no certainty that these factors will produce the anticipated results.
 
There may be times when, in the opinion of the Sub-adviser, prevailing market,
economic or political conditions warrant reducing the proportion of the
Underlying Theme Portfolios' assets invested in equity securities and increasing
the proportion held in cash (U.S. dollars, foreign currencies or multinational
currency units) or invested in debt securities or high quality money market
instruments issued by corporations, or the United States, or a foreign
government. A portion of each Underlying Theme Portfolio's assets normally will
be held in cash (U.S. dollars, foreign currencies or multinational currency
units) or invested in foreign or domestic high quality money market instruments
pending investment of proceeds from new sales of Underlying Theme Fund shares,
to provide for ongoing expenses and to satisfy redemptions.
 
For each Underlying Theme Portfolio's investment purposes, an issuer is
typically considered as located in a particular country if it (a) is organized
under the laws of or has its principal office in a particular country, or (b)
normally derives 50% or more of its total revenues from business in that
country, provided that, in the Sub-adviser's view, the value of such issuer's
securities will tend to reflect such country's development to a greater extent
than developments elsewhere. However, these are not absolute requirements, and
certain companies incorporated in a particular country and considered by the
Sub-adviser to be located in that country may have substantial foreign
operations or subsidiaries and/or export sales exceeding in size the assets or
sales in that country.
 
In certain countries, governmental restrictions and other limitations on
investment may affect an Underlying Theme Portfolio's ability to invest in such
countries. In addition, in some instances only special classes of securities may
be purchased by foreigners and the market prices, liquidity and rights with
respect to those securities may vary from shares owned by nationals. The
Sub-adviser is not aware at this time of the existence of any investment or
exchange control regulations which might substantially impair the operations of
the Underlying Theme Portfolios as described in the Underlying Theme Funds'
prospectus and statement of additional information. Restrictions may in the
future, however, make it undesirable to invest in certain countries. None of the
Underlying Theme Portfolios has a present intention of making any significant
investment in any country or stock market in which the Sub-adviser considers the
political or economic situation to threaten an Underlying Theme Portfolio with
substantial or total loss of its investment in such country or market.
 
INVESTMENTS IN OTHER INVESTMENT COMPANIES. Each Underlying Theme Portfolio may
invest in the securities of investment companies within the limitations of the
Investment Company Act of 1940, as amended (the "1940 Act"). These limitations
currently provide that, in general, an Underlying Theme Portfolio may purchase
shares of an investment company unless (a) such a purchase would cause an
Underlying Theme Portfolio to own in the aggregate more than 3% of the total
outstanding voting stock of the investment company or (b) such a purchase would
cause the Underlying Theme Portfolio to have more than 5% of its assets invested
in the investment company or more than 10% of its assets invested in an
aggregate of all such investment companies. The foregoing restrictions do not
apply to the investment of the Feeder
 
                   Statement of Additional Information Page 5
<PAGE>
                             AIM GLOBAL TRENDS FUND
Funds in their corresponding Portfolios. Investment in closed-end investment
companies may involve the payment of substantial premiums above the value of
such companies' portfolio securities. Each Underlying Theme Portfolio does not
intend to invest in such investment companies unless, in the judgment of the
Sub-adviser, the potential benefits of such investments justify the payment of
any applicable premiums. The return on such securities will be reduced by
operating expenses of such companies, including payments to the investment
managers of those investment companies.
 
   
DEPOSITARY RECEIPTS. An Underlying Theme Portfolio may hold securities of
foreign issuers in the form of American Depositary Receipts ("ADRs"), American
Depositary Shares ("ADSs") and European Depositary Receipts ("EDRs") or other
securities convertible into securities of eligible foreign issuers. These
securities may not necessarily be denominated in the same currency as the
securities for which they may be exchanged. ADRs and ADSs are typically issued
by an American bank or trust company and evidence ownership of underlying
securities issued by a foreign corporation. EDRs, which are sometimes referred
to as Continental Depositary Receipts ("CDRs"), are issued in Europe typically
by foreign banks and trust companies and evidence ownership of either foreign or
domestic securities. Generally, ADRs and ADSs in registered form are designed
for use in U.S. securities markets and EDRs in bearer form are designed for use
in European securities markets. For purposes of each Underlying Theme
Portfolio's investment policies, an Underlying Theme Portfolio's investments in
ADRs, ADSs and EDRs will be deemed to be investments in the equity securities
representing securities of foreign issuers into which they may be converted.
    
 
ADR facilities may be established as either "unsponsored" or "sponsored." While
ADRs issued under these two types of facilities are in some respects similar,
there are distinctions between them relating to the rights and obligations of
ADR holders and the practices of market participants. A depository may establish
an unsponsored facility without participation by (or even necessarily the
acquiescence of) the issuer of the deposited securities, although typically the
depository requests a letter of non-objection from such issuer prior to the
establishment of the facility. Holders of unsponsored ADRs generally bear all
the costs of such facilities. The depository usually charges fees upon the
deposit and withdrawal of the deposited securities, the conversion of dividends
into U.S. dollars, the disposition of non-cash distributions, and the
performance of other services. The depository of an unsponsored facility
frequently is under no obligation to distribute shareholder communications
received from the issuer of the deposited securities or to pass-through voting
rights to ADR holders in respect of the deposited securities. Sponsored ADR
facilities are created in generally the same manner as unsponsored facilities,
except that the issuer of the deposited securities enters into a deposit
agreement with the depository. The deposit agreement sets out the rights and
responsibilities of the issuer, the depository and the ADR holders. With
sponsored facilities, the issuer of the deposited securities generally will bear
some of the costs relating to the facility (such as dividend payment fees of the
depository), although ADR holders continue to bear certain other costs (such as
deposit and withdrawal fees). Under the terms of most sponsored arrangements,
depositories agree to distribute notices of shareholder meetings and voting
instructions, and to provide shareholder communications and other information to
the ADR holders at the request of the issuer of the deposited securities. The
Underlying Theme Portfolios may invest in both sponsored and unsponsored ADRs.
 
WARRANTS OR RIGHTS. Warrants or rights may be acquired by an Underlying Theme
Portfolio in connection with other securities or separately and provide the
Underlying Theme Portfolio with the right to purchase at a later date other
securities of the issuer.
 
LENDING OF UNDERLYING THEME PORTFOLIO SECURITIES. For the purpose of realizing
additional income, each Underlying Theme Portfolio may make secured loans of its
securities holdings amounting to not more than 30% of its total assets.
Securities loans are made to broker/dealers or institutional investors pursuant
to agreements requiring that the loans be continuously secured by collateral at
least equal at all times to the value of the securities lent plus any accrued
interest, "marked to market" on a daily basis. The Underlying Theme Portfolios
may pay reasonable administrative and custodial fees in connection with the loan
of their securities. While the securities loan is outstanding, an Underlying
Theme Portfolio will continue to receive the equivalent of the interest or
dividends paid by the issuer on the securities, as well as interest on the
investment of the collateral or a fee from the borrower. An Underlying Theme
Portfolio will have a right to call each loan and obtain the securities within
the stated settlement period. An Underlying Theme Portfolio will not have the
right to vote equity securities while they are being lent, but it may call in a
loan in anticipation of any important vote. Loans will only be made to firms
deemed by the Sub-adviser to be of good standing and will not be made unless, in
the judgment of the Sub-adviser, the consideration to be earned from such loans
would justify the risk. The risks in lending portfolio securities, as with other
extensions of secured credit, consist of possible delays in receiving additional
collateral or in recovery of the securities and possible loss of rights in the
collateral should the borrower fail financially.
 
COMMERCIAL BANK OBLIGATIONS. For the purposes of each Underlying Theme
Portfolio's investment policies with respect to bank obligations, obligations of
foreign branches of U.S. banks and of foreign banks are obligations of the
issuing bank
 
                   Statement of Additional Information Page 6
<PAGE>
                             AIM GLOBAL TRENDS FUND
and may be general obligations of the parent bank. Such obligations may,
however, be limited by the terms of a specific obligation and by government
regulation. As with investments in non-U.S. securities in general, investments
in the obligations of foreign branches of U.S. banks and of foreign banks may
subject each Underlying Theme Portfolio to investment risks that are different
in some respects from those of investments in obligations of U.S. issuers.
Although each Underlying Theme Portfolio will typically acquire obligations
issued and supported by the credit of U.S. or foreign banks having total assets
at the time of purchase of $1 billion or more, this $1 billion figure is not an
investment policy or restriction of each Underlying Theme Portfolio. For the
purposes of calculation with respect to the $1 billion figure, the assets of a
bank will be deemed to include the assets of its U.S. and non-U.S. branches.
 
   
REPURCHASE AGREEMENTS. A repurchase agreement is a transaction in which an
Underlying Theme Portfolio purchases securities from a bank or recognized
securities dealer and simultaneously commits to resell the securities to the
bank or dealer on an agreed-upon date or upon demand and at a price reflecting a
market rate of interest unrelated to the coupon rate or maturity of the
purchased securities. Although repurchase agreements carry certain risks not
associated with direct investments in securities, including possible decline in
the market value of the underlying securities and delays and costs to the
Underlying Theme Portfolio if the other party to the repurchase agreement
becomes bankrupt, the Underlying Theme Portfolios intend to enter into
repurchase agreements only with banks and dealers believed by the Sub-adviser to
present minimal credit risks in accordance with guidelines established by the
Underlying Trust's or Global Investment Portfolio's Board of Trustees (each a
"Board" and, collectively, the "Boards"), as applicable. The Sub-adviser will
review and monitor the creditworthiness of such institutions under the
applicable Board's general supervision.
    
 
Each Underlying Theme Portfolio will invest only in repurchase agreements
collateralized at all times in an amount at least equal to the repurchase price
plus accrued interest. To the extent that the proceeds from any sale of such
collateral upon a default in the obligation to repurchase were less than the
repurchase price, an Underlying Theme Portfolio would suffer a loss. If the
financial institution that is party to the repurchase agreement petitions for
bankruptcy or otherwise becomes subject to bankruptcy or other liquidation
proceedings, there may be restrictions on an Underlying Theme Portfolio's
ability to sell the collateral and it could suffer a loss. However, with respect
to financial institutions whose bankruptcy or liquidation proceedings are
subject to the U.S. Bankruptcy Code, each Underlying Theme Portfolio intends to
comply with provisions under such code that would allow the immediate resale of
such collateral. Each Underlying Theme Portfolio will not enter into a
repurchase agreement with a maturity of more than seven days if, as a result,
more than 15% of the value of its net assets (except for the Health Care Fund,
more than 10% of the value of its total assets) would be invested in such
repurchase agreements and other illiquid investments.
 
BORROWING, REVERSE REPURCHASE AGREEMENTS AND "ROLL" TRANSACTIONS. Each
Underlying Theme Portfolio's borrowings will not exceed 33 1/3% of its total
assets, i.e., the Underlying Theme Portfolio's total assets at all times will
equal at least 300% of the amount of outstanding borrowings. If market
fluctuations in the value of an Underlying Theme Portfolio's securities holdings
or other factors cause the ratio of its total assets to outstanding borrowings
to fall below 300%, within three days (excluding Sundays and holidays) of such
event that Underlying Theme Portfolio may be required to sell portfolio
securities to restore the 300% asset coverage, even though from an investment
standpoint such sales might be disadvantageous. Each Underlying Theme Portfolio
may also borrow up to 5% of its total assets for temporary or emergency purposes
other than to meet redemptions. Any borrowing by an Underlying Theme Portfolio
may cause greater fluctuation in the value of its shares than would be the case
if it did not borrow.
 
Each Underlying Theme Portfolio's fundamental investment limitations permit it
to borrow money for leveraging purposes. However, each Underlying Theme
Portfolio (except the Health Care Fund) is currently prohibited, pursuant to a
non-fundamental investment policy, from borrowing money in order to purchase
securities. Nevertheless, this policy may be changed in the future by the
applicable Board. If an Underlying Theme Portfolio employs leverage in the
future, it would be subject to certain additional risks. Use of leverage creates
an opportunity for greater growth of capital but would exaggerate any increases
or decreases in the net asset value of a Feeder Fund or an Underlying Theme
Portfolio. When the income and gains on securities purchased with the proceeds
of borrowings exceed the costs of such borrowings, an Underlying Theme
Portfolio's earnings or a Feeder Fund's net asset value will increase faster
than otherwise would be the case; conversely, if such income and gains fail to
exceed such costs, an Underlying Theme Portfolio's earnings or a Feeder Fund's
net asset value would decline faster than would otherwise be the case.
 
Each Underlying Theme Portfolio may enter into reverse repurchase agreements. A
reverse repurchase agreement is a borrowing transaction in which the Underlying
Theme Portfolio transfers possession of securities to another party, such as a
bank or broker/dealer, in return for cash, and agrees to repurchase the
securities in the future at an agreed upon price, which includes an interest
component. Each Underlying Theme Portfolio may also engage in "roll" borrowing
transactions, which involve the sale of Government National Mortgage Association
certificates or other securities together with a
 
                   Statement of Additional Information Page 7
<PAGE>
                             AIM GLOBAL TRENDS FUND
   
commitment (for which the Underlying Theme Portfolio may receive a fee) to
purchase similar, but not identical, securities at a future date. Each
Underlying Theme Portfolio will segregate cash or liquid securities in an amount
sufficient to cover its obligations under "roll" transactions and reverse
repurchase agreements with broker/dealers. No segregation is required for
reverse repurchase agreements with banks.
    
 
SHORT SALES. Each Underlying Theme Portfolio may make short sales of securities.
A short sale is a transaction in which an Underlying Theme Portfolio sells a
security in anticipation that the market price of that security will decline. An
Underlying Theme Portfolio may make short sales (i) as a form of hedging to
offset potential declines in long positions in securities it owns, or
anticipates acquiring, or in similar securities, and (ii) in order to maintain
flexibility in its securities holdings.
 
When an Underlying Theme Portfolio makes a short sale of a security it does not
own, it must borrow the security sold short and deliver it to the broker/dealer
or other intermediary through which it made the short sale. The Underlying Theme
Portfolio may have to pay a fee to borrow particular securities and will often
be obligated to pay over any payments received on such borrowed securities.
 
An Underlying Theme Portfolio's obligation to replace the borrowed security when
the borrowing is called or expires will be secured by collateral deposited with
the intermediary. The Underlying Theme Portfolio will also be required to
deposit collateral with its custodian to the extent, if any, necessary so that
the value of both collateral deposits in the aggregate is at all times equal to
at least 100% of the current market value of the security sold short. Depending
on arrangements made with the intermediary from which it borrowed the security
regarding payment of any amounts received by it on such security, an Underlying
Theme Portfolio may not receive any payments (including interest) on its
collateral deposited with such intermediary.
 
If the price of the security sold short increases between the time of the short
sale and the time an Underlying Theme Portfolio replaces the borrowed security,
it will incur a loss; conversely, if the price declines, the Underlying Theme
Portfolio will realize a gain. Any gain will be decreased, and any loss
increased, by the transaction costs associated with the transaction. Although an
Underlying Theme Portfolio's gain is limited by the price at which it sold the
security short, its potential loss theoretically is unlimited.
 
No Underlying Theme Portfolio will make a short sale if, after giving effect to
the sale, the market value of the securities sold short exceeds 25% of the value
of its total assets or its aggregate short sales of the securities of any one
issuer exceed the lesser of 2% of its net assets or 2% of the securities of any
class of the issuer. Moreover, an Underlying Theme Portfolio may engage in short
sales only with respect to securities listed on a national securities exchange.
 
- --------------------------------------------------------------------------------
 
                         OPTIONS, FUTURES AND CURRENCY
                                   STRATEGIES
 
- --------------------------------------------------------------------------------
 
SPECIAL RISKS OF OPTIONS, FUTURES AND CURRENCY STRATEGIES
The use by the Underlying Theme Portfolios of options, futures contracts and
forward currency contracts ("Forward Contracts") involves special considerations
and risks, as described below. Risks pertaining to particular instruments are
described in the sections that follow.
 
        (1) Successful use of most of these instruments depends upon the
    Sub-adviser's ability to predict movements of the overall securities and
    currency markets, which requires different skills than predicting changes in
    the prices of individual securities. While the Sub-adviser is experienced in
    the use of these instruments, there can be no assurance that any particular
    strategy adopted will succeed.
 
        (2) There might be imperfect correlation, or even no correlation,
    between price movements of an instrument and price movements of the
    investments being hedged. For example, if the value of an instrument used in
    a short hedge increased by less than the decline in value of the hedged
    investment, the hedge would not be fully successful. Such a lack of
    correlation might occur due to factors unrelated to the value of the
    investments being hedged, such as speculative or other pressures on the
    markets in which the hedging instrument is traded. The effectiveness of
    hedges using hedging instruments on indices will depend on the degree of
    correlation between price movements in the index and price movements in the
    investments being hedged.
 
                   Statement of Additional Information Page 8
<PAGE>
                             AIM GLOBAL TRENDS FUND
 
        (3) Hedging strategies, if successful, can reduce risk of loss by wholly
    or partially offsetting the negative effect of unfavorable price movements
    in the investments being hedged. However, hedging strategies can also reduce
    opportunity for gain by offsetting the positive effect of favorable price
    movements in the hedged investments. For example, if an Underlying Theme
    Portfolio entered into a short hedge because the Sub-adviser projected a
    decline in the price of a security in the Underlying Theme Portfolio's
    portfolio, and the price of that security increased instead, the gain from
    that increase might be wholly or partially offset by a decline in the price
    of the hedging instrument. Moreover, if the price of the hedging instrument
    declined by more than the increase in the price of the security, the
    Underlying Theme Portfolio could suffer a loss. In either such case, the
    Underlying Theme Portfolio would have been in a better position had it not
    hedged at all.
 
        (4) As described below, an Underlying Theme Portfolio might be required
    to maintain assets as "cover," maintain segregated accounts or make margin
    payments when it takes positions in instruments involving obligations to
    third parties (i.e., instruments other than purchased options). If the
    Underlying Theme Portfolio were unable to close out its positions in such
    instruments, it might be required to continue to maintain such assets or
    accounts or make such payments until the position expired or matured. The
    requirements might impair the Underlying Theme Portfolio's ability to sell a
    portfolio security or make an investment at a time when it would otherwise
    be favorable to do so, or require that the Underlying Theme Portfolio sell a
    portfolio security at a disadvantageous time. The Underlying Theme
    Portfolio's ability to close out a position in an instrument prior to
    expiration or maturity depends on the existence of a liquid secondary market
    or, in the absence of such a market, the ability and willingness of the
    other party to the transaction ("contra party") to enter into a transaction
    closing out the position. Therefore, there is no assurance that any position
    can be closed out at a time and price that is favorable to the Underlying
    Theme Portfolio.
 
WRITING CALL OPTIONS
Each Underlying Theme Portfolio may write (sell) call options on securities,
indices and currencies. Call options generally will be written on securities and
currencies that, in the opinion of the Sub-adviser, are not expected to make any
major price moves in the near future but that, over the long term, deemed to be
attractive investments for the Underlying Theme Portfolios.
 
A call option gives the holder (buyer) the right to purchase a security or
currency at a specified price (the exercise price) at any time until (American
style) or on (European style) a certain date (the expiration date). So long as
the obligation of the writer of a call option continues, he or she may be
assigned an exercise notice, requiring him or her to deliver the underlying
security or currency against payment of the exercise price. This obligation
terminates upon the expiration of the call option, or such earlier time at which
the writer effects a closing purchase transaction by purchasing an option
identical to that previously sold.
 
Portfolio securities or currencies on which call options may be written will be
purchased solely on the basis of investment considerations consistent with each
Underlying Theme Portfolio's investment objective. When writing a call option,
an Underlying Theme Portfolio, in return for the premium, gives up the
opportunity for profit from a price increase in the underlying security or
currency above the exercise price, and retains the risk of loss should the price
of the security or currency decline. Unlike one who owns securities or
currencies not subject to an option, an Underlying Theme Portfolio has no
control over when it may be required to sell the underlying securities or
currencies, since most options may be exercised at any time prior to the
option's expiration. If a call option that an Underlying Theme Portfolio has
written expires, it will realize a gain in the amount of the premium; however,
such gain may be offset by a decline in the market value of the underlying
security or currency during the option period. If the call option is exercised,
the Underlying Theme Portfolio will realize a gain or loss from the sale of the
underlying security or currency, which will be increased or offset by the
premium received. The Underlying Theme Portfolios do not consider a security or
currency covered by a call option to be "pledged" as that term is used in their
policies that limit the pledging or mortgaging of their assets.
 
Writing call options can serve as a limited short hedge because declines in the
value of the hedged investment would be offset to the extent of the premium
received for writing the option. However, if the security or currency
appreciates to a price higher than the exercise price of the call option, it can
be expected that the option will be exercised and an Underlying Theme Portfolio
will be obligated to sell the security or currency at less than its market
value.
 
The premium that an Underlying Theme Portfolio receives for writing a call
option is deemed to constitute the market value of an option. The premium the
Underlying Theme Portfolio will receive from writing a call option will reflect,
among other things, the current market price of the underlying investment, the
relationship of the exercise price to such market price, the historical price
volatility of the underlying investment, and the length of the option period. In
 
                   Statement of Additional Information Page 9
<PAGE>
                             AIM GLOBAL TRENDS FUND
determining whether a particular call option should be written, the Sub-adviser
will consider the reasonableness of the anticipated premium and the likelihood
that a liquid secondary market will exist for those options.
 
Closing transactions will be effected in order to realize a profit on an
outstanding call option, to prevent an underlying security or currency from
being called or to permit the sale of the underlying security or currency.
Furthermore, effecting a closing transaction will permit an Underlying Theme
Portfolio to write another call option on the underlying security or currency
with either a different exercise price or expiration date, or both.
 
Each Underlying Theme Portfolio will pay transaction costs in connection with
the writing of options and in entering into closing purchase contracts.
Transaction costs relating to options activity are normally higher than those
applicable to purchases and sales of portfolio securities.
 
The exercise price of the options may be below, equal to or above the current
market values of the underlying securities, indices or currencies at the time
the options are written. From time to time, an Underlying Theme Portfolio may
purchase an underlying security or currency for delivery in accordance with the
exercise of an option, rather than delivering such security or currency from its
portfolio. In such cases, additional costs will be incurred.
 
An Underlying Theme Portfolio will realize a profit or loss from a closing
purchase transaction if the cost of the transaction is less or more,
respectively, than the premium received from writing the option. Because
increases in the market price of a call option generally will reflect increases
in the market price of the underlying security or currency, any loss resulting
from the repurchase of a call option is likely to be offset in whole or in part
by appreciation of the underlying security or currency owned by an Underlying
Theme Portfolio.
 
WRITING PUT OPTIONS
Each Underlying Theme Portfolio may write put options on securities, indices and
currencies. A put option gives the purchaser of the option the right to sell,
and the writer (seller) the obligation to buy, the underlying security or
currency at the exercise price at any time until (American style) or on
(European style) the expiration date. The operation of put options in other
respects, including their related risks and rewards, is substantially identical
to that of call options.
 
An Underlying Theme Portfolio generally would write put options in circumstances
where the Sub-adviser wishes to purchase the underlying security or currency for
the Underlying Theme Portfolio's holdings at a price lower than the current
market price of the security or currency. In such event, an Underlying Theme
Portfolio would write a put option at an exercise price that, reduced by the
premium received on the option, reflects the lower price it is willing to pay.
Since the Underlying Theme Portfolio would also receive interest on debt
securities or currencies maintained to cover the exercise price of the option,
this technique could be used to enhance current return during periods of market
uncertainty. The risk in such a transaction would be that the market price of
the underlying security or currency would decline below the exercise price less
the premium received.
 
Writing put options can serve as a limited long hedge because increases in the
value of the hedged investment would be offset to the extent of the premium
received for writing the option. However, if the security or currency
depreciates to a price lower than the exercise price of the put option, it can
be expected that the put option will be exercised and an Underlying Theme
Portfolio will be obligated to purchase the security or currency at greater than
its market value.
 
PURCHASING PUT OPTIONS
Each Underlying Theme Portfolio may purchase put options on securities, indices
and currencies. As the holder of a put option, an Underlying Theme Portfolio
would have the right to sell the underlying security or currency at the exercise
price at any time until (American style) or on (European style) the expiration
date. An Underlying Theme Portfolio may enter into closing sale transactions
with respect to such options, exercise such option or permit such option to
expire.
 
Each Underlying Theme Portfolio may purchase a put option on an underlying
security or currency ("protective put") owned by the Underlying Theme Portfolio
in order to protect against an anticipated decline in the value of the security
or currency. Such hedge protection is provided only during the life of the put
option when the Underlying Theme Portfolio, as the holder of the put option, is
able to sell the underlying security or currency at the put exercise price
regardless of any decline in the underlying security's market price or
currency's exchange value. The premium paid for the put option and any
transaction costs would reduce any profit otherwise available for distribution
when the security or currency is eventually sold.
 
An Underlying Theme Portfolio may also purchase put options at a time when it
does not own the underlying security or currency. By purchasing put options on a
security or currency it does not own, that Underlying Theme Portfolio seeks to
benefit from a decline in the market price of the underlying security or
currency. If the put option is not sold when it has remaining value, and if the
market price of the underlying security or currency remains equal to or greater
than the
 
                  Statement of Additional Information Page 10
<PAGE>
                             AIM GLOBAL TRENDS FUND
exercise price during the life of the put option, the Underlying Theme Portfolio
will lose its entire investment in the put option. In order for the purchase of
a put option to be profitable, the market price of the underlying security or
currency must decline sufficiently below the exercise price to cover the premium
and transaction costs, unless the put option is sold in a closing sale
transaction.
 
PURCHASING CALL OPTIONS
Each Underlying Theme Portfolio may purchase call options on securities, indices
and currencies. As the holder of a call option, an Underlying Theme Portfolio
would have the right to purchase the underlying security or currency at the
exercise price at any time until (American style) or on (European style) the
expiration date. An Underlying Theme Portfolio may enter into closing sale
transactions with respect to such options, exercise such options or permit such
options to expire.
 
Call options may be purchased by an Underlying Theme Portfolio for the purpose
of acquiring the underlying security or currency for its portfolio. Utilized in
this fashion, the purchase of call options would enable an Underlying Theme
Portfolio to acquire the security or currency at the exercise price of the call
option plus the premium paid. At times, the net cost of acquiring the security
or currency in this manner may be less than the cost of acquiring the security
or currency directly. This technique may also be useful to an Underlying Theme
Portfolio in purchasing a large block of securities that would be more difficult
to acquire by direct market purchases. So long as it holds such a call option,
rather than the underlying security or currency itself, the Underlying Theme
Portfolio is partially protected from any unexpected decline in the market price
of the underlying security or currency and, in such event, could allow the call
option to expire, incurring a loss only to the extent of the premium paid for
the option.
 
An Underlying Theme Portfolio may also purchase call options on underlying
securities or currencies it owns to avoid realizing losses that would result in
a reduction of its current return. For example, where an Underlying Theme
Portfolio has written a call option on an underlying security or currency having
a current market value below the price at which it purchased the security or
currency, an increase in the market price could result in the exercise of the
call option written by the Underlying Theme Portfolio and the realization of a
loss on the underlying security or currency. Accordingly, the Underlying Theme
Portfolio could purchase a call option on the same underlying security or
currency, which could be exercised to fulfill its delivery obligations under its
written call (if it is exercised). This strategy could allow the Underlying
Theme Portfolio to avoid selling the portfolio security or currency at a time
when it has an unrealized loss; however, the Underlying Theme Portfolio would
have to pay a premium to purchase the call option plus transaction costs.
 
Aggregate premiums paid for put and call options will not exceed 5% of each
Underlying Theme Portfolio's total assets at the time of each purchase.
 
An Underlying Theme Portfolio may attempt to accomplish objectives similar to
those involved in using Forward Contracts by purchasing put or call options on
currencies. A put option gives an Underlying Theme Portfolio as purchaser the
right (but not the obligation) to sell a specified amount of currency at the
exercise price at any time until (American style) or on (European style) the
expiration date of the option. A call option gives an Underlying Theme Portfolio
as purchaser the right (but not the obligation) to purchase a specified amount
of currency at the exercise price at any time until (American style) or on
(European style) the expiration date of the option. An Underlying Theme
Portfolio might purchase a currency put option, for example, to protect itself
against a decline in the dollar value of a currency in which it holds or
anticipates holding securities. If the currency's value should decline against
the dollar, the loss in currency value should be offset, in whole or in part, by
an increase in the value of the put. If the value of the currency instead should
rise against the dollar, any gain to an Underlying Theme Portfolio would be
reduced by the premium it had paid for the put option. A currency call option
might be purchased, for example, in anticipation of, or to protect against, a
rise in the value against the dollar of a currency in which an Underlying Theme
Portfolio anticipates purchasing securities.
 
Options may be either listed on an exchange or traded in over-the-counter
("OTC") markets. Listed options are third-party contracts (i.e., performance of
the obligations of the purchaser and seller is guaranteed by the exchange or
clearing corporation) and have standardized strike prices and expiration dates.
OTC options are two-party contracts with negotiated strike prices and expiration
dates. An Underlying Theme Portfolio will not purchase an OTC option unless it
believes that daily valuations for such options are readily obtainable. OTC
options differ from exchange-traded options in that OTC options are transacted
with dealers directly and not through a clearing corporation (which guarantees
performance). Consequently, there is a risk of non-performance by the dealer.
Since no exchange is involved, OTC options are valued on the basis of an average
of the last bid prices obtained from dealers, unless a quotation from only one
dealer is available, in which case only that dealer's price will be used. In the
case of OTC options, there can be no assurance that a liquid secondary market
will exist for any particular option at any specific time.
 
                  Statement of Additional Information Page 11
<PAGE>
                             AIM GLOBAL TRENDS FUND
 
   
The staff of the SEC considers purchased OTC options to be illiquid securities.
An Underlying Theme Portfolio may also sell OTC options and, in connection
therewith, segregate assets or cover its obligations with respect to OTC options
written by it. The assets used as cover for OTC options written by an Underlying
Theme Portfolio will be considered illiquid unless the OTC options are sold to
qualified dealers who agree that the Underlying Theme Portfolio may repurchase
any OTC option it writes at a maximum price to be calculated by a formula set
forth in the option agreement. The cover for an OTC option written subject to
this procedure would be considered illiquid only to the extent that the maximum
repurchase price under the formula exceeds the intrinsic value of the option.
    
 
   
An Underlying Theme Portfolio's ability to establish and close out positions in
exchange-listed options depends on the existence of a liquid market. Each
Underlying Theme Portfolio intends to purchase or write only those
exchange-traded options for which there appear to be liquid secondary markets.
However, there can be no assurance that such a market will exist at any
particular time. Closing transactions can be made for OTC options only by
negotiating directly with the contra party or by a transaction in the secondary
market if any such market exists. Although an Underlying Theme Portfolio will
enter into OTC options only with contra parties that are expected to be capable
of entering into closing transactions with it, there is no assurance that the
Underlying Theme Portfolio will in fact be able to close out an OTC option
position at a favorable price prior to expiration. In the event of insolvency of
the contra party, the Underlying Theme Portfolio might be unable to close out an
OTC option position at any time prior to its expiration.
    
 
INDEX OPTIONS
Puts and calls on indices are similar to puts and calls on securities or futures
contracts except that all settlements are in cash and gain or loss depends on
changes in the index in question (and thus on price movements in the securities
market or a particular market sector generally) rather than on price movements
in individual securities or futures contracts. When an Underlying Theme
Portfolio writes a call on an index, it receives a premium and agrees that,
prior to the expiration date, the purchaser of the call, upon exercise of the
call, will receive from the Underlying Theme Portfolio an amount of cash if the
closing level of the index upon which the call is based is greater than the
exercise price of the call. The amount of cash is equal to the difference
between the closing price of the index and the exercise price of the call times
a specified multiple (the "multiplier"), which determines the total dollar value
for each point of such difference. When an Underlying Theme Portfolio buys a
call on an index, it pays a premium and has the same rights as to such call as
are indicated above. When an Underlying Theme Portfolio buys a put on an index,
it pays a premium and has the right, prior to the expiration date, to require
the seller of the put, upon the Underlying Theme Portfolio's exercise of the
put, to deliver to the Underlying Theme Portfolio an amount of cash if the
closing level of the index upon which the put is based is less than the exercise
price of the put, which amount of cash is determined by the multiplier, as
described above for calls. When the Underlying Theme Portfolio writes a put on
an index, it receives a premium and the purchaser has the right, prior to the
expiration date, to require the Underlying Theme Portfolio to deliver to it an
amount of cash equal to the difference between the closing level of the index
and the exercise price times the multiplier, if the closing level is less than
the exercise price.
 
The risks of investment in index options may be greater than options on
securities. Because index options are settled in cash, when an Underlying Theme
Portfolio writes a call on an index it cannot provide in advance for its
potential settlement obligations by acquiring and holding the underlying
securities. An Underlying Theme Portfolio can offset some of the risk of writing
a call index option position by holding a diversified portfolio of securities
similar to those on which the underlying index is based. However, an Underlying
Theme Portfolio cannot, as a practical matter, acquire and hold a portfolio
containing exactly the same securities as underlie the index and, as a result,
bears a risk that the value of the securities held will vary from the value of
the index.
 
Even if an Underlying Theme Portfolio could assemble a securities portfolio that
exactly reproduced the composition of the underlying index, it still would not
be fully covered from a risk standpoint because of the "timing risk" inherent in
writing index options. When an index option is exercised, the amount of cash
that the holder is entitled to receive is determined by the difference between
the exercise price and the closing index level on the date when the option is
exercised. As with other kinds of options, the Underlying Theme Portfolio, as
the call writer, will not know that it has been assigned until the next business
day at the earliest. The time lag between exercise and notice of assignment
poses no risk for the writer of a covered call on a specific underlying
security, such as common stock, because there the writer's obligation is to
deliver the underlying security, not to pay its value as of a fixed time in the
past. So long as the writer already owns the underlying security, it can satisfy
its settlement obligations by simply delivering it, and the risk that its value
may have declined since the exercise date is borne by the exercising holder. In
contrast, even if the writer of an index call holds securities that exactly
match the composition of the underlying index, it will not be able to satisfy
its assignment obligations by delivering those securities against payment of the
exercise price. Instead, it will be required to pay cash in an amount based on
the closing index value on the exercise date; and by the time it learns that it
has been assigned, the
 
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                             AIM GLOBAL TRENDS FUND
index may have declined, with a corresponding decline in the value of its
securities portfolio. This "timing risk" is an inherent limitation on the
ability of index call writers to cover their risk exposure by holding securities
positions.
 
If an Underlying Theme Portfolio purchases an index option and exercises it
before the closing index value for that day is available, it runs the risk that
the level of the underlying index may subsequently change. If such a change
causes the exercised option to fall out-of-the-money, the Underlying Theme
Portfolio will be required to pay the difference between the closing index value
and the exercise price of the option (times the applicable multiplier) to the
assigned writer.
 
INTEREST RATE, CURRENCY AND STOCK INDEX FUTURES CONTRACTS
Each Underlying Theme Portfolio may enter into interest rate, currency or stock
index futures contracts (collectively, "Futures" or "Futures Contracts") as a
hedge against changes in prevailing levels of interest rates, currency exchange
rates or stock price levels, respectively, in order to establish more definitely
the effective return on securities or currencies held or intended to be acquired
by it. An Underlying Theme Portfolio's hedging may include sales of Futures as
an offset against the effect of expected increases in interest rates, and
decreases in currency exchange rates and stock prices, and purchases of Futures
as an offset against the effect of expected declines in interest rates, and
increases in currency exchange rates or stock prices.
 
Each Underlying Theme Portfolio only will enter into Futures Contracts that are
traded on futures exchanges and are standardized as to maturity date and
underlying financial instrument. Futures exchanges and trading thereon in the
United States are regulated under the Commodity Exchange Act by the Commodity
Futures Trading Commission ("CFTC"). Futures are exchanged in London at the
London International Financial Futures Exchange.
 
Although techniques other than sales and purchases of Futures Contracts could be
used to reduce an Underlying Theme Portfolio's exposure to interest rate,
currency exchange rate and stock market fluctuations, an Underlying Theme
Portfolio may be able to hedge its exposure more effectively and at a lower cost
through using Futures Contracts.
 
A Futures Contract provides for the future sale by one party and purchase by
another party of a specified amount of a specific financial instrument (security
or currency) for a specified price at a designated date, time and place. A stock
index Futures Contract provides for the delivery, at a designated date, time and
place, of an amount of cash equal to a specified dollar amount times the
difference between the stock index value at the close of trading on the contract
and the price at which the Futures Contract is originally struck; no physical
delivery of stocks comprising the index is made. Brokerage fees are incurred
when a Futures Contract is bought or sold, and margin deposits must be
maintained at all times the Futures Contract is outstanding.
 
Although Futures Contracts typically require future delivery of and payment for
financial instruments or currencies, Futures Contracts usually are closed out
before the delivery date. Closing out an open Futures Contract sale or purchase
is effected by entering into an offsetting Futures Contract purchase or sale,
respectively, for the same aggregate amount of the identical financial
instrument or currency and the same delivery date. If the offsetting purchase
price is less than the original sale price, the Underlying Theme Portfolio
realizes a gain; if it is more, the Underlying Theme Portfolio realizes a loss.
Conversely, if the offsetting sale price is more than the original purchase
price, the Underlying Theme Portfolio realizes a gain; if it is less, the
Underlying Theme Portfolio realizes a loss. The transaction costs must also be
included in these calculations. There can be no assurance, however, that an
Underlying Theme Portfolio will be able to enter into an offsetting transaction
with respect to a particular Futures Contract at a particular time. If an
Underlying Theme Portfolio is not able to enter into an offsetting transaction,
it will continue to be required to maintain the margin deposits on the Futures
Contract.
 
As an example of an offsetting transaction, the contractual obligations arising
from the sale of one Futures Contract of September Deutschemarks on an exchange
may be fulfilled at any time before delivery under the Futures Contract is
required (i.e., on a specified date in September, the "delivery month") by the
purchase of another Futures Contract of September Deutschemarks on the same
exchange. In such instance, the difference between the price at which the
Futures Contract was sold and the price paid for the offsetting purchase, after
allowance for transaction costs, represents the profit or loss to the Underlying
Theme Portfolio.
 
Each Underlying Theme Portfolio's Futures transactions will be entered into for
hedging purposes only, that is, Futures Contracts will be sold to protect
against a decline in the price of securities or currencies that an Underlying
Theme Portfolio owns, or Futures Contracts will be purchased to protect an
Underlying Theme Portfolio against an increase in the price of securities or
currencies it has committed to purchase or expects to purchase.
 
"Margin" with respect to Futures Contracts is the amount of funds that must be
deposited by an Underlying Theme Portfolio in order to initiate Futures trading
and maintain its open positions in Futures Contracts. A margin deposit made
 
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                             AIM GLOBAL TRENDS FUND
when the Futures Contract is entered into ("initial margin") is intended to
ensure the Underlying Theme Portfolio's performance under the Futures Contract.
The margin required for a particular Futures Contract is set by the exchange on
which the Futures Contract is traded and may be significantly modified from time
to time by the exchange during the term of the Futures Contract.
 
Subsequent payments, called "variation margin," to and from the futures
commission merchant through which the Underlying Theme Portfolio entered into
the Futures Contract will be made on a daily basis as the price of the
underlying security, currency or index fluctuates making the Futures Contract
more or less valuable, a process known as marking-to-market.
 
    RISKS OF USING FUTURES CONTRACTS. The prices of Futures Contracts are
volatile and are influenced by, among other things, actual and anticipated
changes in interest rates and currency exchange rates, and in stock market
movements, which in turn are affected by fiscal and monetary policies and
national and international political and economic events.
 
There is a risk of imperfect correlation between changes in prices of Futures
Contracts and prices of the securities or currencies in an Underlying Theme
Portfolio's portfolio being hedged. The degree of imperfection of correlation
depends upon circumstances such as variations in speculative market demand for
Futures and for securities or currencies, including technical influences in
Futures trading; and differences between the financial instruments being hedged
and the instruments underlying the standard Futures Contracts available for
trading. A decision of whether, when and how to hedge involves skill and
judgment, and even a well-conceived hedge may be unsuccessful to some degree
because of unexpected market behavior or interest or currency rate trends.
 
Because of the low margin deposits required, Futures trading involves an
extremely high degree of leverage. As a result, a relatively small price
movement in a Futures Contract may result in immediate and substantial loss, as
well as gain, to the investor. For example, if at the time of purchase, 10% of
the value of the Futures Contract is deposited as margin, a subsequent 10%
decrease in the value of the Futures Contract would result in a total loss of
the margin deposit, before any deduction for the transaction costs, if the
account were then closed out. A 15% decrease would result in a loss equal to
150% of the original margin deposit, if the Futures Contract were closed out.
Thus, a purchase or sale of a Futures Contract may result in losses in excess of
the amount invested in the Futures Contract.
 
Most U.S. Futures exchanges limit the amount of fluctuation permitted in Futures
Contract and options on Futures Contracts prices during a single trading day.
The daily limit establishes the maximum amount that the price of a Futures
Contract or option may vary either up or down from the previous day's settlement
price at the end of a trading session. Once the daily limit has been reached in
a particular type of Futures Contract or option, no trades may be made on that
day at a price beyond that limit. The daily limit governs only price movement
during a particular trading day and therefore does not limit potential losses,
because the limit may prevent the liquidation of unfavorable positions. Futures
Contracts and option prices have occasionally moved to the daily limit for
several consecutive trading days with little or no trading, thereby preventing
prompt liquidation of positions and subjecting some traders to substantial
losses.
 
If an Underlying Theme Portfolio were unable to liquidate a Futures or option on
Futures position due to the absence of a liquid secondary market or the
imposition of price limits, it could incur substantial losses. The Underlying
Theme Portfolio would continue to be subject to market risk with respect to the
position. In addition, except in the case of purchased options, the Underlying
Theme Portfolio would continue to be required to make daily variation margin
payments and might be required to maintain the position being hedged by the
Future or option or to maintain cash or securities in a segregated account.
 
Certain characteristics of the Futures market might increase the risk that
movements in the prices of Futures Contracts or options on Futures might not
correlate perfectly with movements in the prices of the investments being
hedged. For example, all participants in the Futures and options on Futures
markets are subject to daily variation margin calls and might be compelled to
liquidate Futures or options on Futures positions whose prices are moving
unfavorably to avoid being subject to further calls. These liquidations could
increase price volatility of the instruments and distort the normal price
relationship between the Futures or options and the investments being hedged.
Also, because initial margin deposit requirements in the Futures market are less
onerous than margin requirements in the securities markets, there might be
increased participation by speculators in the Futures markets. This
participation also might cause temporary price distortions. In addition,
activities of large traders in both the Futures and securities markets involving
arbitrage, "program trading" and other investment strategies might result in
temporary price distortions.
 
OPTIONS ON FUTURES CONTRACTS
Options on Futures Contracts are similar to options on securities or currencies
except that options on Futures Contracts give the purchaser the right, in return
for the premium paid, to assume a position in a Futures Contract (a long
position if
 
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                             AIM GLOBAL TRENDS FUND
the option is a call and a short position if the option is a put) at a specified
exercise price at any time during the period of the option. Upon exercise of the
option, the delivery of the Futures position by the writer of the option to the
holder of the option will be accompanied by delivery of the accumulated balance
in the writer's Futures margin account, which represents the amount by which the
market price of the Futures Contract, at exercise, exceeds (in the case of a
call) or is less than (in the case of a put) the exercise price of the option on
the Futures Contract. If an option is exercised on the last trading day prior to
the expiration date of the option, the settlement will be made entirely in cash
equal to the difference between the exercise price of the option and the closing
level of the securities, currencies or index upon which the Futures Contract is
based on the expiration date. Purchasers of options who fail to exercise their
options prior to the exercise date suffer a loss of the premium paid.
 
The purchase of call options on Futures can serve as a long hedge, and the
purchase of put options on Futures can serve as a short hedge. Writing call
options on Futures can serve as a limited short hedge, and writing put options
on Futures can serve as a limited long hedge, using a strategy similar to that
used for writing options on securities, foreign currencies or indices.
 
If an Underlying Theme Portfolio writes an option on a Futures Contract, it will
be required to deposit initial and variation margin pursuant to requirements
similar to those applicable to Futures Contracts. Premiums received from the
writing of an option on a Futures Contract are included in the initial margin
deposit.
 
An Underlying Theme Portfolio may seek to close out an option position by
selling an option covering the same Futures Contract and having the same
exercise price and expiration date. The ability to establish and close out
positions on such options is subject to the maintenance of a liquid secondary
market.
 
LIMITATIONS ON USE OF FUTURES, OPTIONS ON FUTURES AND CERTAIN OPTIONS ON
CURRENCIES
To the extent that an Underlying Theme Portfolio enters into Futures Contracts,
options on Futures Contracts and options on foreign currencies traded on a
CFTC-regulated exchange, in each case other than for BONA FIDE hedging purposes
(as defined by the CFTC), the aggregate initial margin and premiums required to
establish those positions (excluding the amount by which options are
"in-the-money") will not exceed 5% of the liquidation value of the Underlying
Theme Portfolio, after taking into account unrealized profits and unrealized
losses on any contracts it has entered into. In general, a call option on a
Futures Contract is "in-the-money" if the value of the underlying Futures
Contract exceeds the strike, i.e., exercise, price of the call; a put option on
a Futures Contract is "in-the-money" if the value of the underlying Futures
Contract is exceeded by the strike price of the put. This guideline may be
modified by the applicable Board, without a shareholder vote. This limitation
does not limit the percentage of an Underlying Theme Portfolio's assets at risk
to 5%.
 
FORWARD CONTRACTS
A Forward Contract is an obligation, usually arranged with a commercial bank or
other currency dealer, to purchase or sell a currency against another currency
at a future date and price as agreed upon by the parties. An Underlying Theme
Portfolio either may accept or make delivery of the currency at the maturity of
the Forward Contract. An Underlying Theme Portfolio may also, if its contra
party agrees prior to maturity, enter into a closing transaction involving the
purchase or sale of an offsetting contract.
 
An Underlying Theme Portfolio engages in forward currency transactions in
anticipation of, or to protect itself against, fluctuations in exchange rates.
An Underlying Theme Portfolio might sell a particular foreign currency forward,
for example, when it holds bonds denominated in a foreign currency but
anticipates, and seeks to be protected against, a decline in the currency
against the U.S. dollar. Similarly, an Underlying Theme Portfolio might sell the
U.S. dollar forward when it holds bonds denominated in U.S. dollars but
anticipates, and seeks to be protected against, a decline in the U.S. dollar
relative to other currencies. Further, an Underlying Theme Portfolio might
purchase a currency forward to "lock in" the price of securities denominated in
that currency that it anticipates purchasing.
 
Forward Contracts are traded in the interbank market conducted directly between
currency traders (usually large commercial banks) and their customers. A Forward
Contract generally has no deposit requirement, and no commissions are charged at
any stage for trades. Each Underlying Theme Portfolio will enter into such
Forward Contracts with major U.S. or foreign banks and securities or currency
dealers in accordance with guidelines approved by the applicable Board.
 
An Underlying Theme Portfolio may enter into Forward Contracts either with
respect to specific transactions or with respect to overall investments of that
Underlying Theme Portfolio. The precise matching of the Forward Contract amounts
and the value of specific securities generally will not be possible because the
future value of such securities in foreign currencies will change as a
consequence of market movements in the value of those securities between the
date the Forward Contract is entered into and the date it matures. Accordingly,
it may be necessary for that Underlying Theme Portfolio to purchase additional
foreign currency on the spot (i.e., cash) market (and bear the expense of such
purchase) if
 
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                             AIM GLOBAL TRENDS FUND
the market value of the security is less than the amount of foreign currency the
Underlying Theme Portfolio is obligated to deliver and if a decision is made to
sell the security and make delivery of the foreign currency. Conversely, it may
be necessary to sell on the spot market some of the foreign currency the
Underlying Theme Portfolio is obligated to deliver. The projection of short-term
currency market movements is extremely difficult, and the successful execution
of a short-term hedging strategy is highly uncertain. Forward Contracts involve
the risk that anticipated currency movements will not be predicted accurately,
causing an Underlying Theme Portfolio to sustain losses on these contracts and
transaction costs.
 
At or before the maturity of a Forward Contract requiring an Underlying Theme
Portfolio to sell a currency, it either may sell a security and use the sale
proceeds to make delivery of the currency or retain the security and offset its
contractual obligation to deliver the currency by purchasing a second contract
pursuant to which it will obtain, on the same maturity date, the same amount of
the currency that it is obligated to deliver. Similarly, an Underlying Theme
Portfolio may close out a Forward Contract requiring it to purchase a specified
currency by entering into a second contract, if its contra party agrees,
entitling it to sell the same amount of the same currency on the maturity date
of the first contract. An Underlying Theme Portfolio would realize a gain or
loss as a result of entering into such an offsetting Forward Contract under
either circumstance to the extent the exchange rate or rates between the
currencies involved moved between the execution dates of the first contract and
the offsetting contract.
 
The cost to an Underlying Theme Portfolio of engaging in Forward Contracts
varies with factors such as the currencies involved, the length of the contract
period and the market conditions then prevailing. Because Forward Contracts are
usually entered into on a principal basis, no fees or commissions are involved.
The use of Forward Contracts does not eliminate fluctuations in the prices of
the underlying securities an Underlying Theme Portfolio owns or intends to
acquire, but it does establish a rate of exchange in advance. In addition, while
Forward Contract sales limit the risk of loss due to a decline in the value of
the hedged currencies, they also limit any potential gain that might result
should the value of the currencies increase.
 
FOREIGN CURRENCY STRATEGIES -- SPECIAL CONSIDERATIONS
An Underlying Theme Portfolio may use options on foreign currencies, Futures on
foreign currencies, options on Futures on foreign currencies and Forward
Contracts to hedge against movements in the values of the foreign currencies in
which the Underlying Theme Portfolio's securities are denominated. Such currency
hedges can protect against price movements in a security that the Underlying
Theme Portfolio owns or intends to acquire that are attributable to changes in
the value of the currency in which it is denominated. Such hedges do not,
however, protect against price movements in the securities that are attributable
to other causes.
 
An Underlying Theme Portfolio might seek to hedge against changes in the value
of a particular currency when no Futures Contract, Forward Contract or option
involving that currency is available or one of such contracts is more expensive
than certain other contracts. In such cases, the Underlying Theme Portfolio may
hedge against price movements in that currency by entering into a contract on
another currency or basket of currencies, the values of which the Sub-adviser
believes will have a positive correlation to the value of the currency being
hedged. The risk that movements in the price of the contract will not correlate
perfectly with movements in the price of the currency being hedged is magnified
when this strategy is used.
 
The value of Futures Contracts, options on Futures Contracts, Forward Contracts
and options on foreign currencies depends on the value of the underlying
currency relative to the U.S. dollar. Because foreign currency transactions
occurring in the interbank market might involve substantially larger amounts
than those involved in the use of Futures Contracts, Forward Contracts or
options, the Underlying Theme Portfolio could be disadvantaged by dealing in the
odd lot market (generally consisting of transactions of less than $1 million)
for the underlying foreign currencies at prices that are less favorable than for
round lots.
 
There is no systematic reporting of last sale information for foreign currencies
or any regulatory requirements that quotations available through dealers or
other market sources be firm or revised on a timely basis. Quotation information
generally is representative of very large transactions in the interbank market
and thus might not reflect odd-lot transactions where rates might be less
favorable. The interbank market in foreign currencies is a global,
round-the-clock market. To the extent the U.S. options or Futures markets are
closed while the markets for the underlying currencies remain open, significant
price and rate movements might take place in the underlying markets that cannot
be reflected in the markets for the Futures contracts or options until they
reopen.
 
Settlement of Futures Contracts, Forward Contracts and options involving foreign
currencies might be required to take place within the country issuing the
underlying currency. Thus, an Underlying Theme Portfolio might be required to
 
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                             AIM GLOBAL TRENDS FUND
accept or make delivery of the underlying foreign currency in accordance with
any U.S. or foreign regulations regarding the maintenance of foreign banking
arrangements by U.S. residents and might be required to pay any fees, taxes and
charges associated with such delivery assessed in the issuing country.
 
COVER
Transactions using Forward Contracts, Futures Contracts and options (other than
options purchased by an Underlying Theme Portfolio) expose the Underlying Theme
Portfolio to an obligation to another party. An Underlying Theme Portfolio will
not enter into any such transactions unless it owns either (1) an offsetting
("covered") position in securities, currencies, or other options, Forward
Contracts or Futures Contracts or (2) cash, receivables and short-term debt
securities with a value sufficient at all times to cover its potential
obligations not covered as provided in (1) above. Each Underlying Theme
Portfolio will comply with SEC guidelines regarding cover for these instruments
and, if the guidelines so require, set aside cash or liquid securities.
 
Assets used as cover or held in a segregated account cannot be sold while the
position in the corresponding Forward Contract, Futures Contract or option is
open, unless they are replaced with other appropriate assets. If a large portion
of an Underlying Theme Portfolio's assets is used for cover or otherwise set
aside, it could affect portfolio management or the Underlying Theme Portfolio's
ability to meet redemption requests or other current obligations.
 
- --------------------------------------------------------------------------------
 
                              RISK FACTORS OF THE
                             UNDERLYING THEME FUNDS
 
- --------------------------------------------------------------------------------
 
DEBT SECURITIES
The value of the debt securities held by each Underlying Theme Portfolio
generally will vary conversely with market interest rates. If interest rates in
a market fall, the value of the debt securities held by each Underlying Theme
Portfolio ordinarily will rise. If market interest rates increase, however, the
debt securities owned by each Underlying Theme Portfolio in that market will be
likely to decrease in value.
 
The Global Consumer Products and Services Portfolio, Global Infrastructure
Portfolio and Global Resources Portfolio may each invest up to 20% of its total
assets in debt securities rated below investment grade. Such investments involve
a high degree of risk. However, those Portfolios will not invest in debt
securities that are in default as to payment of principal and interest.
 
Debt rated Baa by Moody's Investors Service, Inc. ("Moody") is considered by
Moody's to have speculative characteristics. Debt rated BB, B, CCC, CC or C by
Standard & Poor's, a division of The McGraw-Hill Companies, Inc. ("S&P"), and
debt rated Ba, B, Caa, Ca or C by Moody's is regarded, on balance, as
predominantly speculative with respect to the issuer's capacity to pay interest
and repay principal in accordance with the terms of the obligation. For S&P, BB
indicates the lowest degree of speculation for such lower quality debt and C the
highest degree of speculation. For Moody's, Baa indicates the lowest degree of
speculation for such lower quality debt and C the highest degree of speculation.
While such lower quality debt will likely have some quality and protective
characteristics, these are outweighed by large uncertainties or major risk
exposures to adverse conditions. Debt rated C by Moody's or S&P is the lowest
rated debt that is not in default as to principal or interest, and issues so
rated can be regarded as having extremely poor prospects of ever attaining any
real investment standing. Lower quality debt securities also are generally
considered to be subject to greater risk than securities with higher ratings
with regard to a deterioration of general economic conditions. These lower
quality debt securities are the equivalent of high yield, high risk bonds,
commonly known as "junk bonds."
 
Ratings of debt securities represent the rating agency's opinion regarding their
quality and are not a guarantee of quality. Rating agencies attempt to evaluate
the safety of principal and interest payments and do not evaluate the risks of
fluctuations in market value. Also, rating agencies may fail to make timely
changes in credit ratings in response to subsequent events, so that an issuer's
current financial condition may be better or worse than a rating indicates.
 
The market values of lower quality debt securities tend to reflect individual
developments of the issuer to a greater extent than do higher quality
securities, which react primarily to fluctuations in the general level of
interest rates. In addition, lower quality debt securities tend to be more
sensitive to economic conditions and generally have more volatile prices than
higher quality securities. Issuers of lower quality securities are often highly
leveraged and may not have available to them
 
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<PAGE>
                             AIM GLOBAL TRENDS FUND
more traditional methods of financing. For example, during an economic downturn
or a sustained period of rising interest rates, highly leveraged issuers of
lower quality securities may experience financial stress. During such periods,
such issuers may not have sufficient revenues to meet their interest payment
obligations. The issuer's ability to service its debt obligations may also be
adversely affected by specific developments affecting the issuer, such as the
issuer's inability to meet specific projected business forecasts or the
unavailability of additional financing. The risk of loss due to default by the
issuer is significantly greater for the holders of lower quality securities
because such securities are generally unsecured and may be subordinated to the
claims of other creditors of the issuer.
 
Lower quality debt securities of corporate issuers frequently have call or
buy-back features that permit the issuer to call or repurchase the security from
an Underlying Theme Portfolio. If an issuer exercises these provisions in a
declining interest rate market, the Underlying Theme Portfolio may have to
replace the security with a lower yielding security, resulting in a decreased
return for investors. In addition, the Underlying Theme Portfolios may have
difficulty disposing of lower quality securities because they may have a thin
trading market. There may be no established retail secondary market for many of
these securities, and each Underlying Theme Portfolio anticipates that such
securities could be sold only to a limited number of dealers or institutional
investors. The lack of a liquid secondary market also may have an adverse impact
on market prices of such instruments and may make it more difficult for the
Underlying Theme Portfolios to obtain accurate market quotations for purposes of
valuing their portfolio investments. The Underlying Theme Portfolios may also
acquire lower quality debt securities during an initial underwriting or which
are sold without registration under applicable securities laws. Such securities
involve special considerations and risks.
 
In addition to the foregoing, factors that could have an adverse effect on the
market value of lower quality debt securities in which the Underlying Theme
Portfolios may invest include: (i) potential adverse publicity; (ii) heightened
sensitivity to general economic or political conditions; and (iii) the likely
adverse impact of a major economic recession. An Underlying Theme Portfolio may
also incur additional expenses to the extent it is required to seek recovery
upon a default in the payment of principal or interest on portfolio holdings,
and the Underlying Theme Portfolio may have limited legal recourse in the event
of a default.
 
The Sub-adviser attempts to minimize the speculative risks associated with
investments in lower quality securities through credit analysis and by carefully
monitoring current trends in interest rates, political developments and other
factors.
 
ILLIQUID SECURITIES
Each Underlying Theme Portfolio may invest up to 15% of its net assets in
illiquid securities. Securities may be considered illiquid if an Underlying
Theme Portfolio cannot reasonably expect within seven days to sell the
securities for approximately the amount at which it values such securities. See
"Investment Limitations of the Underlying Theme Funds and Portfolios." The sale
of illiquid securities, if they can be sold at all, generally will require more
time and result in higher brokerage charges or dealer discounts and other
selling expenses than will the sale of liquid securities such as securities
eligible for trading on U.S. securities exchanges or in OTC markets. Moreover,
restricted securities, which may be illiquid for purposes of this limitation,
often sell, if at all, at a price lower than similar securities that are liquid.
 
Illiquid securities include those that are subject to restrictions contained in
the securities laws of other countries. However, securities that are freely
marketable in the country where they are principally traded, but would not be
freely marketable in the United States, will not be considered illiquid. Where
registration is required, an Underlying Theme Portfolio may be obligated to pay
all or part of the registration expenses and a considerable period may elapse
between the time of the decision to sell and the time the Underlying Theme
Portfolio may be permitted to sell a security under an effective registration
statement. If, during such a period, adverse market conditions were to develop,
the Underlying Theme Portfolio might obtain a less favorable price than
prevailed when it decided to sell.
 
Not all restricted securities are illiquid. In recent years a large
institutional market has developed for certain securities that are not
registered under the Securities Act of 1933, as amended (the "1933 Act"),
including private placements, repurchase agreements, commercial paper, foreign
securities and corporate bonds and notes. These instruments are often restricted
securities because the securities are sold in transactions not requiring
registration. Institutional investors generally will not seek to sell these
instruments to the general public, but instead will often depend either on an
efficient institutional market in which such unregistered securities can be
readily resold or on an issuer's ability to honor a demand for repayment.
Therefore, the fact that there are contractual or legal restrictions on resale
to the general public or certain institutions is not dispositive of the
liquidity of such investments.
 
Rule 144A under the 1933 Act establishes a "safe harbor" from the registration
requirements of the 1933 Act for resales of certain securities to qualified
institutional buyers. Institutional markets for restricted securities have
developed as a result of Rule 144A, providing both readily ascertainable values
for restricted securities and the ability to liquidate an investment
 
                  Statement of Additional Information Page 18
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                             AIM GLOBAL TRENDS FUND
to satisfy share redemption orders. Such markets include automated systems for
the trading, clearance and settlement of unregistered securities of domestic and
foreign issuers, such as the PORTAL System sponsored by the National Association
of Securities Dealers, Inc. An insufficient number of qualified institutional
buyers interested in purchasing Rule 144A-eligible restricted securities held by
an Underlying Theme Portfolio, however, could affect adversely the marketability
of such portfolio securities, and the Underlying Theme Portfolio might be unable
to dispose of such securities promptly or at favorable prices.
 
   
With respect to liquidity determinations generally, the applicable Board has the
ultimate responsibility for determining whether specific securities, including
restricted securities pursuant to Rule 144A under the 1933 Act, are liquid or
illiquid. Each Board has delegated the function of making day-to-day
determinations of liquidity to the Sub-adviser, in accordance with procedures
approved by that Board. The Sub-adviser takes into account a number of factors
in reaching liquidity decisions, including (i) the frequency of trading in the
security, (ii) the number of dealers that make quotes for the security, (iii)
the number of dealers that have undertaken to make a market in the security,
(iv) the number of other potential purchasers and (v) the nature of the security
and how trading is effected (e.g., the time needed to sell the security, how
offers are solicited and the mechanics of transfer). The Sub-adviser monitors
the liquidity of securities held by each Underlying Theme Portfolio and
periodically reports such determinations to the applicable Board. The
Sub-adviser believes that carefully selected investments in joint ventures,
cooperatives, partnerships and state enterprises that are illiquid
(collectively, "Special Situations") could enable an Underlying Theme Portfolio
to achieve capital appreciation substantially exceeding the appreciation it
would realize if it did not make such investments. However, in order to attempt
to limit investment risk, each Underlying Theme Portfolio will invest no more
than 5% of its total assets in Special Situations. If the liquidity percentage
restriction of a Underlying Theme Portfolio is satisfied at the time of
investment, a later increase in the percentage of illiquid securities held by
the Underlying Theme Portfolio resulting from a change in market value or assets
will not constitute a violation of that restriction. If as a result of a change
in market value or assets, the percentage of illiquid securities held by the
Underlying Theme Portfolio increases above the applicable limit, the Sub-adviser
will take appropriate steps to bring the aggregate amount of illiquid assets
back within the prescribed limitations as soon as reasonably practicable, taking
into account the effect of any disposition on the Underlying Theme Portfolio.
    
 
FOREIGN SECURITIES
    POLITICAL, SOCIAL AND ECONOMIC RISKS. Investing in securities of non-U.S.
companies may entail additional risks due to the potential political, social and
economic instability of certain countries and the risks of expropriation,
nationalization, confiscation or the imposition of restrictions on foreign
investment convertibility of currencies into U.S. dollars and on repatriation of
capital invested. In the event of such expropriation, nationalization or other
confiscation by any country, an Underlying Theme Portfolio could lose its entire
investment in any such country.
 
    RELIGIOUS, POLITICAL AND ETHNIC STABILITY. Certain countries in which an
Underlying Theme Portfolio may invest may have groups that advocate radical
religious or revolutionary philosophies or support ethnic independence. Any
disturbance on the part of such individuals could carry the potential for
widespread destruction or confiscation of property owned by individuals and
entities foreign to such country and could cause the loss of an Underlying Theme
Portfolio's investment in those countries. Instability may also result from,
among other things, (i) authoritarian governments or military involvement in
political and economic decision-making, including changes in government through
extra-constitutional means, (ii) popular unrest associated with demands for
improved political, economic and social conditions, and (iii) hostile relations
with neighboring or other countries. Such political, social and economic
instability could disrupt the principal financial markets in which an Underlying
Theme Portfolio invests and adversely affect the value of its assets.
 
    FOREIGN INVESTMENT RESTRICTIONS. Certain countries prohibit or impose
substantial restrictions on investments in their capital markets, particularly
their equity markets, by foreign entities such as an Underlying Theme Portfolio.
These restrictions or controls may at times limit or preclude investments in
certain securities and may increase the cost and expenses of an Underlying Theme
Portfolio. For example, certain countries require prior governmental approval
before investments by foreign persons may be made or may limit the amount of
investment by foreign persons in a particular company or limit the investment by
foreign persons to only a specific class of securities of a company that may
have less advantageous terms than securities of the company available for
purchase by nationals. Moreover, the national policies of certain countries may
restrict investment opportunities in issuers or industries deemed sensitive to
national interests. In addition, some countries require governmental approval
for the repatriation of investment income, capital or the proceeds of securities
sales by foreign investors. In addition, if there is a deterioration in a
country's balance of payments or for other reasons, a country may impose
restrictions on foreign capital remittances abroad. An Underlying Theme
Portfolio could be adversely affected by delays in, or a refusal to grant, any
required governmental approval for repatriation, as well as by the application
to it of other restrictions on investments.
 
                  Statement of Additional Information Page 19
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                             AIM GLOBAL TRENDS FUND
 
    NON-UNIFORM CORPORATE DISCLOSURE STANDARDS AND GOVERNMENTAL
REGULATION. Foreign companies are subject to accounting, auditing and financial
standards and requirements that differ, in some cases significantly, from those
applicable to U.S. companies. In particular, the assets, liabilities and profits
appearing on the financial statements of such a company may not reflect its
financial position or results of operations in the way they would be reflected
had such financial statements been prepared in accordance with U.S. generally
accepted accounting principles. Most of the foreign securities held by an
Underlying Theme Portfolio will not be registered with the SEC or regulators of
any foreign country, nor will the issuers thereof be subject to the SEC's
reporting requirements. Thus, there will be less available information
concerning most foreign issuers of securities held by an Underlying Theme
Portfolio than is available concerning U.S. issuers. In instances where the
financial statements of an issuer are not deemed to reflect accurately the
financial situation of the issuer, the Sub-adviser will take appropriate steps
to evaluate the proposed investment, which may include on-site inspection of the
issuer, interviews with its management and consultations with accountants,
bankers and other specialists. There is substantially less publicly available
information about foreign companies than there are reports and ratings published
about U.S. companies. In addition, where public information is available, it may
be less reliable than such information regarding U.S. issuers. Issuers of
securities in foreign jurisdictions are generally not subject to the same degree
of regulation as are U.S. issuers with respect to such matters as restrictions
on market manipulation, insider trading rules, shareholder proxy requirements
and timely disclosure of information.
 
    CURRENCY FLUCTUATIONS. Because each Underlying Theme Portfolio, under normal
circumstances, will invest a substantial portion of its total assets in the
securities of foreign issuers that are denominated in foreign currencies, the
strength or weakness of the U.S. dollar against such foreign currencies will
account for part of an Underlying Theme Portfolio's investment performance. A
decline in the value of any particular currency against the U.S. dollar will
cause a decline in the U.S. dollar value of an Underlying Theme Portfolio's
holdings of securities and cash denominated in that currency and, therefore,
will cause an overall decline in its and its corresponding Feeder Fund's net
asset value (as applicable) and any net investment income and capital gains
derived from such securities to be distributed in U.S. dollars to the
shareholders thereof. Moreover, if the value of the foreign currencies in which
an Underlying Theme Portfolio receives its income falls relative to the U.S.
dollar between receipt of the income and the making of distributions, the
Underlying Theme Portfolio may be required to liquidate securities if it has
insufficient cash in U.S. dollars to meet distribution requirements.
 
The rate of exchange between the U.S. dollar and other currencies is determined
by several factors, including the supply and demand for particular currencies,
central bank efforts to support particular currencies, the relative movement of
interest rates and the pace of business activity in the other countries and the
United States, and other economic and financial conditions affecting the world
economy.
 
Although each Underlying Theme Portfolio values its assets daily in terms of
U.S. dollars, the Underlying Theme Portfolios do not intend to convert their
holdings of foreign currencies into U.S. dollars on a daily basis. Each
Underlying Theme Portfolio will do so, from time to time, and investors should
be aware of the costs of currency conversion. Although foreign exchange dealers
do not charge a fee for conversion, they do realize a profit based on the
difference ("spread") between the prices at which they buy and sell various
currencies. Thus, a dealer may offer to sell a foreign currency to an Underlying
Theme Portfolio at one rate, while offering a lesser rate of exchange should an
Underlying Theme Portfolio desire to sell that currency to the dealer.
 
    ADVERSE MARKET CHARACTERISTICS. Securities of many foreign issuers may be
less liquid and their prices more volatile than securities of comparable U.S.
issuers. In addition, foreign securities markets and brokers generally are
subject to less governmental supervision and regulation than in the United
States, and foreign securities transactions usually are subject to fixed
commissions, which generally are higher than negotiated commissions on U.S.
transactions. In addition, foreign securities transactions may be subject to
difficulties associated with the settlement of such transactions. Delays in
settlement could result in temporary periods when assets of an Underlying Theme
Portfolio are uninvested and no return is earned thereon. The inability of an
Underlying Theme Portfolio to make intended security purchases due to settlement
problems could cause it to miss attractive investment opportunities. Inability
to dispose of a portfolio security due to settlement problems either could
result in losses to an Underlying Theme Portfolio due to subsequent declines in
value of the portfolio security or, if that Underlying Theme Portfolio has
entered into a contract to sell the security, could result in possible liability
to the purchaser. The Sub-adviser will consider such difficulties when
determining the allocation of an Underlying Theme Portfolio's assets, although
the Sub-adviser does not believe that such difficulties will have a material
adverse effect on an Underlying Theme Portfolio's portfolio trading activities.
 
Each Underlying Theme Portfolio may use foreign custodians, which may involve
risks in addition to those related to its use of U.S. custodians. Such risks
include uncertainties relating to (1) determining and monitoring the foreign
custodian's
 
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                             AIM GLOBAL TRENDS FUND
financial strength, reputation and standing, (2) maintaining appropriate
safeguards concerning an Underlying Theme Portfolio's investments, and (3)
possible difficulties in obtaining and enforcing judgments against such
custodians.
 
    WITHHOLDING TAXES. Each Underlying Theme Portfolio's net investment income
from securities of its foreign issuers may be subject to withholding taxes by
the foreign issuer's country, thereby reducing that income or delaying the
receipt of income when those taxes may be recaptured. See "Taxes."
 
    CONCENTRATION. To the extent an Underlying Theme Portfolio invests a
significant portion of its assets in securities of issuers located in a
particular country or region of the world, it may be subject to greater risks
and may experience greater volatility than a fund that is more broadly
diversified geographically.
 
    SPECIAL CONSIDERATIONS AFFECTING WESTERN EUROPEAN COUNTRIES. The countries
that are members of the European Economic Community ("Common Market") (Belgium,
Denmark, France, Germany, Greece, Ireland, Italy, Luxembourg, Netherlands,
Portugal, Spain, and the United Kingdom) eliminated certain import tariffs and
quotas and other trade barriers with respect to one another over the past
several years. The Sub-adviser believes that this deregulation should improve
the prospects for economic growth in many Western European countries. Among
other things, the deregulation could enable companies domiciled in one country
to avail themselves of lower labor costs existing in other countries. In
addition, this deregulation could benefit companies domiciled in one country by
opening additional markets for their goods and services in other countries.
Since, however, it is not clear what the exact form or effect of these Common
Market reforms will be on business in Western Europe, it is impossible to
predict the long-term impact of the implementation of these programs on the
securities owned by an Underlying Theme Portfolio.
 
    SPECIAL CONSIDERATIONS AFFECTING RUSSIA AND EASTERN EUROPEAN
COUNTRIES. Investing in Russia and Eastern European countries involves a high
degree of risk and special considerations not typically associated with
investing in the U.S. securities markets and should be considered highly
speculative. Such risks include the following: (1) delays in settling portfolio
transactions and risk of loss arising out of the system of share registration
and custody; (2) the risk that it may be impossible or more difficult than in
other countries to obtain and/or enforce a judgement; (3) pervasiveness of
corruption and crime in the economic system; (4) currency exchange rate
volatility and the lack of available currency hedging instruments; (5) higher
rates of inflation (including the risk of social unrest associated with periods
of hyper-inflation) and high unemployment; (6) controls on foreign investment
and local practices disfavoring foreign investors and limitations on
repatriation of invested capital, profits and dividends, and on a fund's ability
to exchange local currencies for U.S. dollars; (7) political instability and
social unrest and violence; (8) the risk that the governments of Russia and
Eastern European countries may decide not to continue to support the economic
reform programs implemented recently and could follow radically different
political and/or economic policies to the detriment of investors, including
non-market-oriented policies such as the support of certain industries at the
expense of other sectors or investors, or a return to the centrally planned
economy that existed when such countries had a communist form of government; (9)
the financial condition of companies in these countries, including large amounts
of inter-company debt which may create a payments crisis on a national scale;
(10) dependency on exports and the corresponding importance of international
trade; (11) the risk that the tax system in these countries will not be reformed
to prevent inconsistent, retroactive and/or exorbitant taxation; and (12) the
underdeveloped nature of the securities markets.
 
    SPECIAL CONSIDERATIONS AFFECTING JAPAN. Japan's economic growth has declined
significantly since 1990. The general government position has deteriorated as a
result of weakening economic growth and stimulative measures taken to support
economic activity and to restore financial stability. Although the decline in
interest rates and fiscal stimulation packages have helped to contain
recessionary forces, uncertainties remain. Japan is also heavily dependent upon
international trade, so its economy is especially sensitive to trade barriers
and disputes. Japan has had difficult relations with its trading partners,
particularly the United States, where the trade imbalance is the greatest. It is
possible that trade sanctions and other protectionist measures could impact
Japan adversely in both the short and the long term.
 
The common stocks of many Japanese companies trade at high price-earnings
ratios. Differences in accounting methods make it difficult to compare the
earnings of Japanese companies with those of companies in other countries,
especially in the United States. In general, however, reported net income in
Japan is understated relative to U.S. accounting standards and this is one
reason why price-earnings ratios of the stocks of Japanese companies have tended
historically to be higher than those for U.S. stocks. In addition, Japanese
companies have tended to have higher growth rates than U.S. companies and
Japanese interest rates have generally been lower than in the United States,
both factors which tend to result in lower discount rates and higher
price-earnings ratios in Japan than in the United States.
 
The Japanese securities markets are less regulated than those in the United
States. Evidence has emerged from time to time of distortion of market prices to
serve political or other purposes. Shareholders' rights are not always equally
 
                  Statement of Additional Information Page 21
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                             AIM GLOBAL TRENDS FUND
enforced. In addition, Japan's banking industry is undergoing problems related
to bad loans and declining values in real estate.
 
    SPECIAL CONSIDERATIONS AFFECTING PACIFIC REGION COUNTRIES. Certain of the
risks associated with international investments are heightened for investments
in Pacific region countries. For example, some of the currencies of Pacific
region countries have experienced steady devaluations relative to the U.S.
dollar, and major adjustments have been made periodically in certain of such
currencies. Certain countries, such as India, face serious exchange constraints.
Jurisdictional disputes also exist between South Korea and North Korea. In
addition, the Underlying Theme Portfolios may invest in Hong Kong, which
reverted to Chinese administration on July 1, 1997. Investments in Hong Kong may
be subject to expropriation, nationalization or confiscation, in which case an
Underlying Theme Portfolio could lose its entire investment in Hong Kong. In
addition, the reversion of Hong Kong also presents a risk that the Hong Kong
dollar will be devalued and a risk of possible loss of investor confidence in
Hong Kong's currency, stock market and assets.
 
    SPECIAL CONSIDERATIONS AFFECTING LATIN AMERICAN COUNTRIES. Most Latin
American countries have experienced substantial, and in some periods extremely
high, rates of inflation for many years. Inflation and rapid fluctuations in
inflation rates have had and may continue to have very negative effects on the
economies and securities markets of certain Latin American countries. Certain
Latin American countries are also among the largest debtors to commercial banks
and foreign governments. At times certain Latin American countries have declared
moratoria on the payment of principal and/or interest on external debt. In
addition, certain Latin American securities markets have experienced high
volatility in recent years.
 
Latin American countries may also close certain sectors of their economies to
equity investments by foreigners. Further due to the absence of securities
markets and publicly owned corporations and due to restrictions on direct
investment by foreign entities, investments may only be made in certain Latin
American countries solely or primarily through governmentally approved
investment vehicles or companies.
 
Certain Latin American countries may have managed currencies that are maintained
at artificial levels to the U.S. dollar rather than at levels determined by the
market. This type of system can lead to sudden and large adjustments in the
currency which, in turn, can have a disruptive and negative effect on foreign
investors. For example, in late 1994, the value of the Mexican peso lost more
than one-third of its value relative to the U.S. dollar.
 
    SPECIAL CONSIDERATIONS AFFECTING EMERGING MARKETS. Investing in the
securities of companies in emerging markets may entail special risks relating to
potential political and economic instability and the risks of expropriation,
nationalization, confiscation or the imposition of restrictions on foreign
investment, convertibility of currencies into U.S. dollars and on repatriation
of capital invested. In the event of such expropriation, nationalization or
other confiscation by any country, an Underlying Theme Portfolio could lose its
entire investment in any such country.
 
Emerging securities markets are substantially smaller, less developed, less
liquid and more volatile than the major securities markets. The limited size of
emerging securities markets and limited trading value in issuers compared to the
volume of trading in U.S. securities could cause prices to be erratic for
reasons apart from factors that affect the quality of the securities. For
example, limited market size may cause prices to be unduly influenced by traders
who control large positions. Adverse publicity and investors' perceptions,
whether or not based on fundamental analysis, may decrease the value and
liquidity of portfolio securities, especially in these markets. In addition,
securities traded in certain emerging markets may be subject to risks due to the
inexperience of financial intermediaries, a lack of modern technology, the lack
of a sufficient capital base to expand business operations, and the possibility
of permanent or temporary termination of trading.
 
Settlement mechanisms in emerging securities markets may be less efficient and
reliable than in more developed markets. In such emerging securities there may
be share registration and delivery delays or failures.
 
Many emerging market countries have experienced substantial, and in some periods
extremely high, rates of inflation for many years. Inflation and rapid
fluctuations in inflation rates and corresponding currency devaluations have had
and may continue to have negative effects on the economies and securities
markets of certain emerging market countries.
 
    PRIVATIZATIONS. The governments of some foreign countries have been engaged
in programs of selling part or all of their stakes in government owned or
controlled enterprises ("privatizations"). The Sub-adviser believes that
privatizations may offer opportunities for significant capital appreciation and
intends to invest assets of the Underlying Theme Portfolios in privatizations in
appropriate circumstances. In certain foreign countries, the ability of foreign
entities such as the Underlying Theme Portfolios to participate in
privatizations may be limited by local law, or the terms on which the Underlying
Theme Portfolios may be permitted to participate may be less advantageous than
those for local investors.
 
                  Statement of Additional Information Page 22
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                             AIM GLOBAL TRENDS FUND
There can be no assurance that foreign governments will continue to sell
companies currently owned or controlled by them or that privatization programs
will be successful.
 
- --------------------------------------------------------------------------------
 
                             INVESTMENT LIMITATIONS
 
- --------------------------------------------------------------------------------
INVESTMENT LIMITATIONS OF THE FUND
 
   
FUNDAMENTAL LIMITATIONS. The following fundamental limitations of the Fund
cannot be changed without the affirmative vote of a majority of the outstanding
shares of the Fund.
    
 
The Fund will not:
 
        (1) Issue senior securities or borrow money, except as permitted under
    the 1940 Act and then not in excess of 33 1/3% of the Fund's total assets
    (including the amount borrowed but reduced by any liabilities not
    constituting borrowings) at the time of the borrowing, except that the Fund
    may borrow up to an additional 5% of its total assets (not including the
    amount borrowed) for temporary or emergency purposes;
 
        (2) Make loans, except through loans of portfolio securities or through
    repurchase agreements, provided that for purposes of this restriction, the
    acquisition of bonds, debentures, other debt securities or instruments, or
    participations or other interests therein and investments in government
    obligations, commercial paper, certificates of deposit, bankers' acceptances
    or similar instruments will not be considered the making of a loan;
 
        (3) Engage in the business of underwriting securities of other issuers,
    except to the extent that the Fund might be considered an underwriter under
    the federal securities laws in connection with its disposition of portfolio
    securities;
 
        (4) Purchase or sell real estate, except that investments in securities
    of issuers that invest in real estate and investments in mortgage-backed
    securities, mortgage participations or other instruments supported by
    interests in real estate are not subject to this limitation, and except that
    the Fund may exercise rights under agreements relating to such securities,
    including the right to enforce security interests and to hold real estate
    acquired by reason of such enforcement until that real estate can be
    liquidated in an orderly manner;
 
        (5) Purchase or sell physical commodities unless acquired as a result of
    owning securities or other instruments, but the Fund may purchase, sell or
    enter into financial options and futures, forward and spot currency
    contracts, swap transactions and other financial contracts or derivative
    instruments; or
 
        (6) Purchase securities of any one issuer if, as a result, more than 5%
    of the Fund's total assets would be invested in securities of that issuer or
    the Fund would own or hold more than 10% of the outstanding voting
    securities of that issuer, except that up to 25% of the Fund's total assets
    may be invested without regard to this limitation, and except that this
    limitation does not apply to securities issued or guaranteed by the U.S.
    government, its agencies or instrumentalities or to securities issued by
    other investment companies.
 
Because of its investment objective and policies, the Fund will concentrate more
than 25% of its assets in the mutual fund industry. In accordance with the
Fund's investment program set forth in the Prospectus, the Fund may invest more
than 25% of its assets in the Underlying Theme Funds.
 
NON-FUNDAMENTAL LIMITATIONS. The following investment limitations of the Fund
are non-fundamental and may be changed by the vote of the Trust's Board of
Trustees without shareholder approval.
 
The Fund will not:
 
        (1) Invest more than 15% of its net assets in illiquid securities, a
    term which means securities that cannot be disposed of within seven days in
    the ordinary course of business at approximately the amount at which the
    Fund has valued the securities and includes, among other things, repurchase
    agreements maturing in more than seven days;
 
        (2) Purchase portfolio securities while borrowings in excess of 5% of
    its total assets are outstanding;
 
                  Statement of Additional Information Page 23
<PAGE>
                             AIM GLOBAL TRENDS FUND
 
        (3) Purchase securities on margin, except for short-term credit
    necessary for clearance of portfolio transactions and except that the Fund
    may make margin deposits in connection with its use of financial options and
    futures, forward and spot currency contracts, swap transactions and other
    financial contract or derivative instruments;
 
        (4) Engage in short sales of securities or maintain a short position,
    except that the Fund may maintain short positions in connection with its use
    of financial options an futures, forward and spot currency contracts, swap
    transactions and other financial contracts or derivative instruments; or
 
        (5) Purchase securities of other investment companies, except to the
    extent permitted by the 1940 Act or under the terms of any exemptive order
    granted by the SEC and except that this limitation does not apply to
    securities received or acquired as dividends, through offers of exchange, or
    as a result of reorganization, consolidation, or merger.
 
If a percentage restriction on investment or utilization of assets is adhered to
at the time of an investment or transaction, a later change in percentage
ownership of a security or kind of securities resulting from changing market
values or a similar type of event will not be considered a violation of the
Fund's policies or restrictions.
 
Notwithstanding the forgoing investment limitations, the Fund may invest in
Underlying Theme Funds that have adopted investment limitations that may be more
or less restrictive than those listed above. As a result, the Fund may engage
indirectly in investment strategies that are prohibited under the investment
limitations listed above. The investment limitations and other investment
policies and restrictions of each Underlying Theme Fund are described in its
prospectus and statement of additional information.
 
Pursuant to Section 12(d)(1)(G) of the 1940 Act, the Fund may invest
substantially all of its assets in the Underlying Theme Funds.
 
INVESTMENT LIMITATIONS OF THE UNDERLYING THEME FUNDS AND PORTFOLIOS
 
FEEDER FUNDS
The Financial Services Fund, Infrastructure Fund, Resources Fund and Consumer
Products and Services Fund (each, a "Feeder Fund," and collectively, the "Feeder
Funds") each has the following fundamental investment policy to enable it to
invest in the Financial Services Portfolio, Infrastructure Portfolio, Resources
Portfolio and Consumer Products and Services Portfolio (each a "Portfolio," and
collectively, the "Portfolios"), respectively:
 
Notwithstanding any other investment policy of the Fund, the Fund may invest all
of its investable assets (cash, securities and receivables related to
securities) in an open-end management investment company having substantially
the same investment objective, policies and limitations as the Fund.
 
All other fundamental investment policies, and the non-fundamental investment
policies, of each Feeder Fund and its corresponding Portfolio are identical.
Therefore, although the following discusses the investment policies of each
Portfolio and its Board of Trustees, it applies equally to each Feeder Fund and
its Board of Trustees.
 
   
Each Portfolio has adopted the following investment limitations as fundamental
policies that may not be changed without the affirmative vote of a majority of
the outstanding shares of the Portfolio. Whenever a Feeder Fund is requested to
vote on a change in the investment limitations of its corresponding Portfolio,
the Fund will hold a meeting of its shareholders and will cast its votes as
instructed by its shareholders.
    
 
No Portfolio may:
 
        (1) Purchase or sell real estate, except that investments in securities
    of issuers that invest in real estate and investments in mortgage-backed
    securities, mortgage participations or other instruments supported by
    interests in real estate are not subject to this limitation, and except that
    the Portfolio may exercise rights under agreements relating to such
    securities, including the right to enforce security interests and to hold
    real estate acquired by reason of such enforcement until that real estate
    can be liquidated in an orderly manner;
 
        (2) Purchase or sell physical commodities, but the Portfolio may
    purchase, sell or enter into financial options and futures, forward and spot
    currency contracts, swap transactions and other financial contracts or
    derivative instruments;
 
        (3) Engage in the business of underwriting securities of other issuers,
    except to the extent that the Portfolio might be considered an underwriter
    under the federal securities laws in connection with its disposition of
    portfolio securities;
 
                  Statement of Additional Information Page 24
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                             AIM GLOBAL TRENDS FUND
 
        (4) Make loans, except through loans of portfolio securities or through
    repurchase agreements, provided that for purposes of this limitation, the
    acquisition of bonds, debentures, other debt securities or instruments, or
    participations or other interests therein and investments in government
    obligations, commercial paper, certificates of deposit, bankers' acceptances
    or similar instruments will not be considered the making of a loan;
 
        (5) Issue senior securities or borrow money, except as permitted under
    the 1940 Act and then not in excess of 33 1/3% of the Portfolio's total
    assets (including the amount borrowed but reduced by any liabilities not
    constituting borrowings) at the time of the borrowing, except that the
    Portfolio may borrow up to an additional 5% of its total assets (not
    including the amount borrowed) for temporary or emergency purposes; or
 
        (6) Purchase securities of any one issuer if, as a result, more than 5%
    of the Portfolio's total assets would be invested in securities of that
    issuer or the Portfolio would own or hold more than 10% of the outstanding
    voting securities of that issuer, except that up to 25% of the Portfolio's
    total assets may be invested without regard to this limitation, and except
    that this limitation does not apply to securities issued or guaranteed by
    the U.S. government, its agencies or instrumentalities or to securities
    issued by other investment companies.
 
The following investment policies of each Portfolio are not fundamental policies
and may be changed by vote of the Portfolios' Board of Trustees without
shareholder approval. No Portfolio may:
 
        (1) Invest in securities of an issuer if the investment would cause the
    Portfolio to own more than 10% of any class of securities of any one issuer;
 
        (2) Invest in companies for the purpose of exercising control or
    management;
 
        (3) Invest more than 15% of its net assets in illiquid securities,
    including securities that are illiquid by virtue of the absence of a readily
    available market;
 
        (4) Enter into a futures contract, an option on a futures contract, or
    an option on foreign currency traded on a CFTC-regulated exchange, in each
    case other than for BONA FIDE hedging purposes (as defined by the CFTC), if
    the aggregate initial margin and premiums required to establish all of those
    positions (excluding the amount by which options are "in-the-money") exceeds
    5% of the liquidation value of the Portfolio's portfolio, after taking into
    account unrealized profits and unrealized losses on any contracts the
    Portfolio has entered into;
 
        (5) Borrow money except for temporary or emergency purposes (other than
    to meet redemptions). While borrowings exceed 5% of the Portfolio's assets,
    the Portfolio will not make any additional investments;
 
        (6) Invest more than 10% of its total assets in shares of other
    investment companies and may not invest more than 5% of its total assets in
    any one investment company or acquire more than 3% of the outstanding voting
    securities of any one investment company;
 
        (7) Purchase securities on margin, provided that each Portfolio may
    obtain short-term credits as may be necessary for the clearance of purchases
    and sales of securities, and further provided that the Portfolio may make
    margin deposits in connection with its use of financial options and futures,
    forward and spot currency contracts, swap transactions and other financial
    contracts or derivative instruments; or
 
        (8) Mortgage, pledge, or hypothecate any of its assets, provided that
    this shall not apply to the transfer of securities in connection with any
    permissible borrowing or to collateral arrangements in connection with
    permissible activities.
 
   
Investors should refer to the applicable Prospectus for further information with
respect to the investment objective of each Feeder Fund, which may not be
changed without the approval of Fund shareholders, and its corresponding
Portfolio's investment objective, which may be changed without the approval of
its shareholders, and other investment policies, techniques and limitations,
which may or may not be changed without shareholder approval.
    
 
HEALTH CARE FUND
   
The Health Care Fund has adopted the following investment limitations as
fundamental policies, which may not be changed without the affirmative vote of a
majority of the outstanding shares of the Health Care Fund.
    
 
                  Statement of Additional Information Page 25
<PAGE>
                             AIM GLOBAL TRENDS FUND
 
The Health Care Fund may not:
 
        (1) Purchase or sell real estate, except that investments in securities
    of issuers that invest in real estate and investments in mortgage-backed
    securities, mortgage participations or other instruments supported by
    interests in real estate are not subject to this limitation, and except that
    the Health Care Fund may exercise rights under agreements relating to such
    securities, including the right to enforce security interests and to hold
    real estate acquired by reason of such enforcement until that real estate
    can be liquidated in an orderly manner;
 
        (2) Engage in the business of underwriting securities of other issuers,
    except to the extent that the Health Care Fund might be considered an
    underwriter under the federal securities laws in connection with its
    disposition of portfolio securities;
 
        (3) Make loans, except through loans of portfolio securities or through
    repurchase agreements, provided that for purposes of this limitation, the
    acquisition of bonds, debentures, other debt securities or instruments, or
    participations or other interests therein and investments in government
    obligations, commercial paper, certificates of deposit, bankers' acceptances
    or similar instruments will not be considered the making of a loan;
 
        (4) Purchase or sell physical commodities, but the Health Care Fund may
    purchase, sell or enter into financial options and futures, forward and spot
    currency contracts, swap transactions and other financial contracts or
    derivative instruments;
 
        (5) Issue senior securities or borrow money, except as permitted under
    the 1940 Act and then not in excess of 33 1/3% of the Health Care Fund's
    total assets (including the amount borrowed but reduced by any liabilities
    not constituting borrowings) at the time of the borrowing, except that the
    Health Care Fund may borrow up to an additional 5% of its total assets (not
    including the amount borrowed) for temporary or emergency purposes; or
 
        (6) Purchase securities of any one issuer if, as a result, more than 5%
    of the Health Care Fund's total assets would be invested in securities of
    that issuer or the Health Care Fund would own or hold more than 10% of the
    outstanding voting securities of that issuer, except that up to 25% of the
    Health Care Fund's total assets may be invested without regard to this
    limitation, and except that this limitation does not apply to securities
    issued or guaranteed by the U.S. government, its agencies or
    instrumentalities or to securities issued by other investment companies.
 
Notwithstanding any other investment policy of the Health Care Fund, the Health
Care Fund may invest all of its investable assets (cash, securities and
receivables related to securities) in an open-end management investment company
having substantially the same investment objective, policies and limitations as
the Fund.
 
   
The following investment policies of the Health Care Fund are not fundamental
policies and may be changed by vote of the Underlying Trust's Board of Trustees
without shareholder approval. The Health Care Fund will not:
    
 
        (1) Purchase securities for which there is no readily available market,
    or enter into repurchase agreements or purchase time deposits maturing in
    more than seven days, or purchase OTC options or hold assets set aside to
    cover OTC options written by the Health Care Fund, if immediately after and
    as a result, the value of such securities would exceed, in the aggregate,
    15% of the Health Care Fund's net assets;
 
        (2) Purchase securities on margin, provided that the Health Care Fund
    may obtain short-term credits as may be necessary for the clearance of
    purchases and sales of securities, and further provided that the Health Care
    Fund may make margin deposits in connection with its use of financial
    options and futures, forward and spot currency contracts, swap transactions
    and other financial contracts or derivative instruments; or
 
        (3) Mortgage, pledge, or hypothecate any of its assets, provided that
    this shall not apply to the transfer of securities in connection with any
    permissible borrowing or to collateral arrangements in connection with
    permissible activities; or
 
        (4) Borrow money except for temporary or emergency purposes (other than
    to meet redemptions). While borrowings exceed 5% of the Health Care Fund's
    total assets it will not make any additional investments.
 
   
Investors should refer to the Health Care Fund's Prospectus for further
information with respect to the Health Care Fund's investment objective, which
may not be changed without the approval of its shareholders, and other
investment policies, techniques and limitations, which may be changed without
shareholder approval.
    
 
TELECOMMUNICATIONS FUND
   
The Telecommunications Fund has adopted the following investment limitations as
fundamental policies, which may not be changed without the affirmative role of a
majority of the outstanding shares of the Telecommunications Fund.
    
 
                  Statement of Additional Information Page 26
<PAGE>
                             AIM GLOBAL TRENDS FUND
 
The Telecommunications Fund may not:
 
        (1) Purchase or sell real estate, except that investments in securities
    of issuers that invest in real estate and investments in mortgage-backed
    securities, mortgage participations or other instruments supported by
    interests in real estate are not subject to this limitation, and except that
    the Telecommunications Fund may exercise rights under agreements relating to
    such securities, including the right to enforce security interests and to
    hold real estate acquired by reason of such enforcement until that real
    estate can be liquidated in an orderly manner;
 
        (2) Purchase or sell physical commodities, but the Telecommunications
    Fund may purchase, sell or enter into financial options and futures, forward
    and spot currency contracts, swap transactions and other financial contracts
    or derivative instruments;
 
        (3) Engage in the business of underwriting securities of other issuers,
    except to the extent that the Telecommunications Fund might be considered an
    underwriter under the federal securities laws in connection with its
    disposition of portfolio securities;
 
        (4) Make loans, except through loans of portfolio securities or through
    repurchase agreements, provided that for purposes of this limitation, the
    acquisition of bonds, debentures, other debt securities or instruments, or
    participations or other interests therein and investments in government
    obligations, commercial paper, certificates of deposit, bankers' acceptances
    or similar instruments will not be considered the making of a loan;
 
        (5) Issue senior securities or borrow money, except as permitted under
    the 1940 Act and then not in excess of 33 1/3% of the Telecommunications
    Fund's total assets (including the amount borrowed but reduced by any
    liabilities not constituting borrowings) at the time of the borrowing,
    except that the Telecommunications Fund may borrow up to an additional 5% of
    its total assets (not including the amount borrowed) for temporary or
    emergency purposes; or
 
        (6) Purchase securities of any one issuer if, as a result, more than 5%
    of the Telecommunications Fund's total assets would be invested in
    securities of that issuer or the Telecommunications Fund would own or hold
    more than 10% of the outstanding voting securities of that issuer, except
    that up to 25% of the Telecommunications Fund's total assets may be invested
    without regard to this limitation, and except that this limitation does not
    apply to securities issued or guaranteed by the U.S. government, its
    agencies or instrumentalities or to securities issued by other investment
    companies.
 
Notwithstanding any other investment policy of the Telecommunications Fund, the
Telecommunications Fund may invest all of its investable assets (cash,
securities and receivables related to securities) in an open-end management
investment company having substantially the same investment objective, policies
and limitations as the Fund.
 
   
The following investment policies of the Telecommunications Fund are not
fundamental policies and may be changed by vote of the Underlying Trust's Board
of Trustees without shareholder approval. The Telecommunications Fund may not:
    
 
        (1) Invest in securities of an issuer if the investment would cause the
    Telecommunications Fund to own more than 10% of any class of securities of
    any one issuer;
 
        (2) Invest in companies for the purpose of exercising control or
    management;
 
        (3) Invest more than 15% of its net assets in illiquid securities,
    including securities that are illiquid by virtue of the absence of a readily
    available market;
 
        (4) Enter into a futures contract, an option on a futures contract, or
    an option on foreign currency traded on a CFTC-regulated exchange, in each
    case other than for BONA FIDE hedging purposes (as defined by the CFTC), if
    the aggregate initial margin and premiums required to establish all of those
    positions (excluding the amount by which options are "in-the-money") exceeds
    5% of the liquidation value of the Fund's portfolio, after taking into
    account unrealized profits and unrealized losses on any contracts the Fund
    has entered into;
 
        (5) Borrow money except for temporary or emergency purposes (other than
    to meet redemptions). While borrowings exceed 5% of the Telecommunications
    Fund's total assets, it will not make any additional investments;
 
        (6) Purchase securities on margin, provided that the Telecommunications
    Fund may obtain short-term credits as may be necessary for the clearance of
    purchases and sales of securities, and further provided that the
    Telecommunications Fund may make margin deposits in connection with its use
    of financial options and futures, forward and spot currency contracts, swap
    transactions and other financial contracts or derivative instruments; or
 
                  Statement of Additional Information Page 27
<PAGE>
                             AIM GLOBAL TRENDS FUND
 
        (7) Mortgage, pledge, or hypothecate any of its assets, provided that
    this shall not apply to the transfer of securities in connection with any
    permissible borrowing or to collateral arrangements in connection with
    permissible activities.
 
   
Investors should refer to the Telecommunications Fund's Prospectus for further
information with respect to the Telecommunications Fund's investment objective,
which may not be changed without the approval of shareholders, and other
investment policies, techniques and limitations, which may be changed without
shareholder approval.
    
 
If a percentage restriction on investment or utilization of assets in an
investment policy or restriction is adhered to at the time an investment is
made, a later change in percentage ownership of a security or kind of securities
resulting from changing market values or a similar type of event will not be
considered a violation of a Fund's or Portfolio's investment policies or
restrictions. A Fund or Portfolio may exchange securities, exercise conversion
or subscription rights, warrants or other rights to purchase common stock or
other equity securities and may hold, except to the extent limited by the 1940
Act, any such securities so acquired without regard to the Fund's or Portfolio's
investment policies and restrictions. The original cost of the securities so
acquired will be included in any subsequent determination of a Fund's or
Portfolio's compliance with the investment percentage limitations referred to
above and in the Prospectus.
 
- --------------------------------------------------------------------------------
 
                             EXECUTION OF PORTFOLIO
                                  TRANSACTIONS
 
- --------------------------------------------------------------------------------
All orders for the purchase or sale of portfolio securities for the Fund
(normally shares of the Underlying Theme Funds) are placed on behalf of the Fund
by the Sub-adviser. As stated in the Prospectus, the Sub-adviser will exercise
no discretion in investing the assets of the Fund other than to make investments
in money market instruments and to rebalance the percentage of the Fund's assets
in each Underlying Theme Fund.
 
Subject to policies established by the applicable Board, the Sub-adviser is
responsible for the execution of each Underlying Theme Portfolio's securities
transactions and the selection of broker/dealers who execute such transactions
on behalf of each Underlying Theme Portfolio. In executing transactions, the
Sub-adviser seeks the best net results for each Underlying Theme Portfolio,
taking into account such factors as the price (including the applicable
brokerage commission or dealer spread), size of the order, difficulty of
execution and operational facilities of the firm involved. Although the Sub-
adviser generally seeks reasonably competitive commission rates and spreads,
payment of the lowest commission or spread is not necessarily consistent with
the best net results. While each Underlying Theme Portfolio may engage in soft
dollar arrangements for research services, as described below, it has no
obligation to deal with any broker/dealer or group of broker/dealers in the
execution of portfolio transactions.
 
   
Consistent with the interests of each Underlying Theme Portfolio, the
Sub-adviser may select broker/dealers to execute that Underlying Theme
Portfolio's portfolio transaction, on the basis of the research and brokerage
services they provide to the Sub-adviser for its use in managing that Underlying
Theme Portfolio and its other advisory accounts. Such services may include
furnishing analyses, reports and information concerning issuers, industries,
securities, geographic regions, economic factors and trends, portfolio strategy,
and performance of accounts; and effecting securities transactions and
performing functions incidental thereto (such as clearance and settlement).
Research and brokerage services received from such broker are in addition to,
and not in lieu of, the services required to be performed by the Sub-adviser
under investment management and administration contracts. A commission paid to
such broker may be higher than that which another qualified broker would have
charged for effecting the same transaction, provided that the Sub-adviser
determines in good faith that such commission is reasonable in terms either of
that particular transaction or the overall responsibility of the Sub-adviser to
the Underlying Theme Portfolio and its other clients and that the total
commissions paid by that Underlying Theme Portfolio will be reasonable in
relation to the benefits it receive over the long term. Research services may
also be received from dealers who execute portfolio transactions in OTC markets.
    
 
The Sub-adviser may allocate brokerage transactions to broker/dealers who have
entered into arrangements under which the broker/dealer allocates a portion of
the commissions paid by an Underlying Theme Portfolio toward payment of its
expenses, such as custodian fees.
 
Investment decisions for an Underlying Theme Portfolio and for other investment
accounts managed by the Sub-adviser are made independently of each other in
light of differing conditions. However, the same investment decision
occasionally may be made for two or more of such accounts, including an
Underlying Theme Portfolio. In such cases, simultaneous
 
                  Statement of Additional Information Page 28
<PAGE>
                             AIM GLOBAL TRENDS FUND
transactions may occur. Purchases or sales are then allocated as to price or
amount in a manner deemed fair and equitable to all accounts involved. While in
some cases this practice could have a detrimental effect upon the price or value
of the security as far as an Underlying Theme Portfolio is concerned, in other
cases the Sub-adviser believes that coordination and the ability to participate
in volume transactions will be beneficial to that Portfolio.
 
Under a policy adopted by the applicable Board, and subject to the policy of
obtaining the best net results, the Sub-adviser may consider a broker/dealer's
sale of the shares of the Underlying Theme Funds and the other portfolios for
which AIM or the Sub-adviser serves as investment manager or administrator in
selecting broker/dealers for the execution of portfolio transactions. This
policy does not imply a commitment to execute portfolio transactions through all
broker/dealers that sell shares of the Underlying Theme Funds and such other
portfolios.
 
Each Underlying Theme Portfolio contemplates purchasing most foreign equity
securities in OTC markets or stock exchanges located in the countries in which
the respective principal offices of the issuers of the various securities are
located, if that is the best available market. The fixed commissions paid in
connection with most such foreign stock transactions generally are higher than
negotiated commissions on U.S. transactions. There generally is less government
supervision and regulation of foreign stock exchanges and brokers than in the
United States. Foreign security settlements may in some instances be subject to
delays and related administrative uncertainties.
 
Foreign equity securities may be held by an Underlying Theme Portfolio in the
form of ADRs, ADSs, EDRs, CDRs or securities convertible into foreign equity
securities. ADRs, ADSs, EDRs and CDRs may be listed on stock exchanges, or
traded in the OTC markets in the United States or Europe, as the case may be.
ADRs, like other securities traded in the United States, will be subject to
negotiated commission rates. The foreign and domestic debt securities and money
market instruments in which an Underlying Theme Portfolio may invest are
generally traded in the OTC markets.
 
An Underlying Theme Portfolio does not have any obligation to deal with any
broker/dealer or group of broker/dealers in the execution of securities
transactions. Each Underlying Theme Portfolio contemplates that, consistent with
the policy of obtaining the best net results, brokerage transactions may be
conducted through certain companies that are affiliated with AIM or the
Sub-adviser. Both Boards have adopted procedures in conformity with Rule 17e-1
under the 1940 Act to ensure that all brokerage commissions paid to such
affiliates are reasonable and fair in the context of the market in which they
are operating. Any such transactions will be effected and related compensation
paid only in accordance with applicable SEC regulations.
 
- --------------------------------------------------------------------------------
 
                             TRUSTEES AND EXECUTIVE
                                    OFFICERS
 
- --------------------------------------------------------------------------------
   
The Trust's Trustees and Executive Officers are listed below. Unless otherwise
indicated, the address of each Executive Officer is 11 Greenway Plaza, Suite
100, Houston, Texas 77046.
    
 
   
<TABLE>
<CAPTION>
NAME, POSITION(S) WITH THE                PRINCIPAL OCCUPATIONS AND BUSINESS
TRUST AND ADDRESS                         EXPERIENCE FOR PAST 5 YEARS
- ----------------------------------------  --------------------------------------------------------------------------------
<S>                                       <C>
William J. Guilfoyle*, 39                 Mr. Guilfoyle is President, GT Global, Inc. ("GT Global") since 1995; Director,
Trustee, Chairman of the Board and        GT Global since 1991; Senior Vice President and Director of Sales and Marketing,
President                                 GT Global from May 1992 to April 1995; Director, Liechtenstein Global Trust AG
50 California Street                      (holding company of the various international GT companies) Advisory Board since
San Francisco, CA 94111                   January 1996; Director, G.T. Global Insurance Agency ("G.T. Insurance") since
                                          1996; President and Chief Executive Officer, G.T. Insurance since 1995; Senior
                                          Vice President and Director, Sales and Marketing, G.T. Insurance from April 1995
                                          to November 1995; Senior Vice President, Retail Marketing, G.T. Insurance from
                                          1992 to 1993. Mr. Guilfoyle is also a trustee of each of the other investment
                                          companies registered under the 1940 Act that is sub-advised or sub-administered
                                          by the Sub-adviser.
</TABLE>
    
 
                  Statement of Additional Information Page 29
<PAGE>
                             AIM GLOBAL TRENDS FUND
   
<TABLE>
<CAPTION>
NAME, POSITION(S) WITH THE                PRINCIPAL OCCUPATIONS AND BUSINESS
TRUST AND ADDRESS                         EXPERIENCE FOR PAST 5 YEARS
- ----------------------------------------  --------------------------------------------------------------------------------
<S>                                       <C>
C. Derek Anderson, 57                     Mr. Anderson is President, Plantagenet Capital Management, LLC (an investment
Trustee                                   partnership); Chief Executive Officer, Plantagenet Holdings, Ltd. (an investment
220 Sansome Street                        banking firm); Director, Anderson Capital Management, Inc. since 1988; Director,
Suite 400                                 PremiumWear, Inc. (formerly Munsingwear, Inc.) (a casual apparel company) and
San Francisco, CA 94104                   Director, "R" Homes, Inc. and various other companies. Mr. Anderson is also a
                                          trustee of each of the other investment companies registered under the 1940 Act
                                          that is sub-advised or sub-administered by the Sub-adviser.
Frank S. Bayley, 58                       Mr. Bayley is a partner of the law firm of Baker & McKenzie, and serves as a
Trustee                                   Director and Chairman of C.D. Stimson Company (a private investment company).
Two Embarcadero Center                    Mr. Bayley is also a trustee of each of the other investment companies
Suite 2400                                registered under the 1940 Act that is sub-advised or sub- administered by the
San Francisco, CA 94111                   Sub-adviser.
Arthur C. Patterson, 54                   Mr. Patterson is Managing Partner of Accel Partners (a venture capital firm). He
Trustee                                   also serves as a director of Viasoft and PageMart, Inc. (both public software
428 University Avenue                     companies), as well as several other privately held software and communications
Palo Alto, CA 94301                       companies. Mr. Patterson is also a trustee of each of the other investment
                                          companies registered under the 1940 Act that is sub-advised or sub-administered
                                          by the Sub-adviser.
Ruth H. Quigley, 63                       Miss Quigley is a private investor. From 1984 to 1986, she was President of
Trustee                                   Quigley Friedlander & Co., Inc. (a financial advisory services firm). Miss
1055 California Street                    Quigley is also a trustee of each of the other investment companies registered
San Francisco, CA 94108                   under the 1940 Act that is sub-advised or sub-administered by the Sub-adviser.
</TABLE>
    
 
   
<TABLE>
<S>                                       <C>
John J. Arthur+, 53                       Director, Senior Vice President and Treasurer, A I M Advisors, Inc.; Vice
Vice President                            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. and Fund Management
                                          Company.
Kenneth W. Chancey, 52                    Senior Vice President -- Mutual Fund Accounting, the Sub-adviser since 1992;
Vice President and                        Vice President -- Mutual Fund Accounting, the Sub-adviser from 1992-1997.
Principal Accounting Officer
50 California Street
San Francisco, CA 94111
Melville B. Cox, 54                       Vice President and Chief Compliance Officer, A I M Advisors, Inc., A I M Capital
Vice President                            Management, Inc., A I M Distributors, Inc., A I M Fund Services, Inc. and Fund
                                          Management Company.
Gary T. Crum, 50                          Director and President, A I M Capital Management, Inc.; Director and Senior Vice
Vice President                            President, A I M Management Group Inc. and A I M Advisors, Inc.; and Director,
                                          A I M Distributors, Inc. and AMVESCAP PLC.
Robert H. Graham, 51                      Director, President and Chief Executive Officer, A I M Management Group Inc.;
Vice President                            Director and President, A I M Advisors, Inc.; Director and Senior Vice
                                          President, A I M Capital Management, Inc., A I M Distributors, Inc., A I M Fund
                                          Services, Inc. and Fund Management Company; and Director, AMVESCAP PLC.
</TABLE>
    
 
- --------------
   
*  Mr. Guilfolye is an "interested person" of the Trust as defined by the 1940
Act due to his affiliation with the Sub-adviser.
    
 
+  Mr. Arthur and Ms. Relihan are married to each other.
 
                  Statement of Additional Information Page 30
<PAGE>
                             AIM GLOBAL TRENDS FUND
   
<TABLE>
<CAPTION>
NAME, POSITION(S) WITH THE                PRINCIPAL OCCUPATIONS AND BUSINESS
TRUST AND ADDRESS                         EXPERIENCE FOR PAST 5 YEARS
- ----------------------------------------  --------------------------------------------------------------------------------
<S>                                       <C>
Helge K. Lee, 52                          Chief Legal and Compliance Officer -- North America, the Sub-adviser since
Vice President & Secretary                October 1997; Executive Vice President of the Asset Management Division of
50 California Street                      Liechtenstein Global Trust since October 1996; Senior Vice President, General
San Francisco, CA 94111                   Counsel and Secretary of LGT Asset Management, Inc., INVESCO (NY), Inc., GT
                                          Global, GT Global Investor Services, Inc. and G.T. Insurance from May 1994 to
                                          October 1996; Senior Vice President, General Counsel and Secretary of
                                          Strong/Corneliuson Management, Inc. and Secretary of each of the Strong Funds
                                          from October 1991 through May 1994.
Carol F. Relihan+, 43                     Director, Senior Vice President, General Counsel and Secretary, A I M Advisors,
Vice President                            Inc.; Vice President, General Counsel and Secretary, A I M Management Group
                                          Inc.; Director, Vice President and General Counsel, Fund Management Company;
                                          Vice President and General Counsel, A I M Fund Services, Inc.; and Vice
                                          President, A I M Capital Management, Inc. and A I M Distributors, Inc.
</TABLE>
    
 
<TABLE>
<S>                                       <C>
Dana R. Sutton, 39                        Vice President and Fund Controller, A I M Advisors, Inc.; and Assistant Vice
Vice President and Assistant Treasurer    President and Assistant Treasurer, Fund Management Company.
</TABLE>
 
                            ------------------------
 
   
The Board of Trustees has a Nominating and Audit Committee, comprised of Miss
Quigley and Messrs. Anderson, Bayley and Patterson, which is responsible for
nominating persons to serve as Trustees, reviewing audits of the Trust and its
funds and recommending firms to serve as independent auditors of the Trust. Each
of the Trustees and Officers of the Trust is also a Trustee and Officer of AIM
Investment Portfolios, AIM Floating Rate Fund, AIM Investment Funds, AIM Growth
Series, AIM Eastern Europe Fund, GT Global Variable Investment Trust, GT Global
Variable Investment Series, Global Investment Portfolio, Growth Portfolio,
Floating Rate Portfolio and Global High Income Portfolio, which also are
registered investment companies advised by AIM and sub-advised by the
Sub-adviser or an affiliate thereof. All of the Trust's Trustees also serve as
directors or trustees of some or all of the other investment companies managed,
administered or advised by AIM. All of the Trust's executive officers hold
similar offices with some or all of the other investment companies managed,
administered or advised by AIM. Each Trustee who is not a director, officer or
employee of the Sub-adviser or any other affiliated company is paid aggregate
fees of $5,000 a year, plus $300 per Fund for each meeting of the Board
attended, and reimbursed travel and other expenses incurred in connection with
attendance at such meetings. Other Trustees and Officers receive no compensation
or expense reimbursement from the Trust. As of June 26, 1998, the Officers and
Trustees and their families as a group owned in the aggregate beneficially or of
record less than 1% of the shares of the Fund.
    
 
- --------------
+  Mr. Arthur and Ms. Relihan are married to each other.
 
                  Statement of Additional Information Page 31
<PAGE>
                             AIM GLOBAL TRENDS FUND
 
   
                              CONTROL PERSONS AND
                        PRINCIPAL HOLDERS OF SECURITIES
    
 
- --------------------------------------------------------------------------------
 
   
To the best knowledge of the Trust, the names and addresses of the holders of 5%
or more of the outstanding shares of any class of the Trust's equity securities
as of June 26, 1998, and the percentage of the outstanding shares held by such
holders are set forth below:
    
   
<TABLE>
<CAPTION>
                                                                                                                       PERCENT
                                                                                                                      OWNED OF
AIM GLOBAL TRENDS FUND                    NAME AND ADDRESS OF OWNER                                                    RECORD*
- ----------------------------------------  -------------------------------------------------------------------------  -----------
<S>                                       <C>                                                                        <C>
Class C                                   State Street Bank & Trust C/F IRA                                               5.28%
                                            Edward Clark
                                            2198 Lake Marie Drive
                                            Santa Maria, California 93455
                                          State Street Bank & Trust C/F                                                   5.17%
                                            Brian E. Crist Roth IRA Conv.
                                            P.O. Box 1360
                                            Arroyo Grande, California 93421-1360
Advisor Class                             G.T. Capital Holdings, Inc.                                                    26.54%
                                            SERP Deferred Compensation
                                            50 California Street, 27th Floor
                                            San Francisco, California 94111-4624
                                            Attn: Ellen Hoke
 
<CAPTION>
                                            PERCENT
                                            OWNED OF
                                             RECORD
                                              AND
AIM GLOBAL TRENDS FUND                    BENEFICIALLY
- ----------------------------------------  ------------
<S>                                       <C>
Class C                                           -0-
                                                  -0-
Advisor Class                                     -0-
</TABLE>
    
 
- --------------
   
*  The Trust has no knowledge as to whether all or any portion of the shares
owned of record are also owned beneficially.
    
 
                  Statement of Additional Information Page 32
<PAGE>
                             AIM GLOBAL TRENDS FUND
 
                                   MANAGEMENT
 
- --------------------------------------------------------------------------------
 
MANAGEMENT SERVICES RELATING TO THE FUND
AIM serves as the investment manager and administrator to the Fund under an
investment management and administration contract ("Management Contract")
between the Trust and AIM. The Sub-adviser serves as the sub-adviser and sub-
administrator to the Fund under a Sub-Advisory and Sub-Administration Contract
between AIM and the Sub-adviser ("Sub-Management Contract," and together with
the Management Contract, the "Management Contracts"). Neither AIM nor the
Sub-adviser receives a fee for providing management services to the Fund.
 
DISTRIBUTION SERVICES RELATING TO THE FUND
The Fund's Advisor Class shares are offered continuously through the Fund's
principal underwriter and distributor, AIM Distributors, on a "best efforts"
basis pursuant to a distribution contract between the Company and AIM
Distributors without a front-end sales charge or contingent deferred sales
charge.
 
TRANSFER AGENCY AND ACCOUNTING AGENCY SERVICES
   
The Transfer Agency and Service Agreement between the Trust and A I M Fund
Services, Inc. ("AFS"), a registered transfer agent and wholly-owned subsidiary
of AIM, provides that AFS will perform certain shareholder services for the Fund
for a fee per account serviced. The Transfer Agency and Service Agreement
provides that AFS will receive a per account fee plus out-of-pocket expenses to
process orders for purchases, redemptions and exchanges of shares; prepare and
transmit payments for dividends and distributions declared by the Fund; maintain
shareholder accounts and provide shareholders with information regarding the
Fund and their accounts. The Transfer Agency and Service Agreement became
effective on September 8, 1998. See "Additional Information -- Special Servicing
Agreement."
    
 
- --------------------------------------------------------------------------------
 
                            VALUATION OF FUND SHARES
 
- --------------------------------------------------------------------------------
 
   
The net asset value per share of the Fund is normally determined daily as of the
close of trading of the New York Stock Exchange ("NYSE") (generally 4:00 p.m.
Eastern time) on each business day of the Fund. In the event the NYSE closes
early (i.e., before 4:00 p.m. Eastern time) on a particular day, the net asset
value of the Fund is determined as of the close of the NYSE on such day. Net
asset value per share is determined by dividing the value of the Fund's
interests in the Underlying Theme Funds attributable to a class, less all its
liabilities attributable to that class, by the total number of shares
outstanding of that class. The value of the Fund's interests in the Underlying
Theme Funds is determined in accordance with the procedures and methodologies
described in the prospectus and statement of additional information of the
Underlying Theme Funds. Determination of the Fund's net asset value per share is
made in accordance with generally accepted accounting principles.
    
 
- --------------------------------------------------------------------------------
 
   
                       HOW TO PURCHASE AND REDEEM SHARES
    
 
- --------------------------------------------------------------------------------
   
A complete description of the manner in which shares of the Fund may be
purchased appears in the Fund's Prospectus under the headings "How to Purchase
Shares," and "Terms and Conditions of Purchases of the AIM Funds."
    
 
                  Statement of Additional Information Page 33
<PAGE>
                             AIM GLOBAL TRENDS FUND
 
   
Complete information concerning the method of exchanging shares of the Fund for
shares of the other AIM Funds is set forth in the Prospectus under the heading
"Exchange Privilege."
    
 
   
Information concerning redemption of the Fund's shares is set forth in the
Prospectus under the heading "How to Redeem Shares." In addition to the Fund's
obligation to redeem shares, AIM Distributors may also repurchase shares as an
accommodation to shareholders. To effect a repurchase, those dealers who have
executed Selected Dealer Agreements with AIM Distributors must phone orders to
the order desk of the Fund at (800) 959-4246 and guarantee delivery of all
required documents in good order. A repurchase is effected at the net asset
value per share of the Fund next determined after the repurchase order is
received. Such an arrangement is subject to timely receipt by AFS of all
required documents in good order. If such documents are not received within a
reasonable time after the order is placed, the order is subject to cancellation.
While there is no charge imposed by the Fund or by AIM Distributors (other than
any applicable contingent deferred sales charge) when shares are redeemed or
repurchased, dealers may charge a fair service fee for handling the transaction.
    
 
   
The right of redemption may be suspended or the date of payment postponed when
(a) trading on the NYSE is restricted, as determined by applicable rules and
regulations of the SEC, (b) the NYSE is closed for other than customary weekend
and 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 a Fund not reasonably
practicable.
    
 
   
PROGRAMS AND SERVICES FOR SHAREHOLDERS. The Fund provides certain services for
shareholders and certain investment or redemption programs. See "Exchange
Privilege" and "How to Redeem Shares" in the Prospectus. All inquiries
concerning these programs should be made directly to A I M Fund Services, Inc.,
P.O. Box 4739, Houston, Texas 77210-4739, or call toll free (800) 959-4246.
    
 
   
DIVIDEND ORDER. Dividends may be paid to someone other than the registered
owner, or sent to an address other than the address of record. (Please note that
signature guarantees are required to effect this option.) An investor also may
direct that his or her dividends be invested in one of the other AIM Funds and
there is no sales charge for these investments; initial investment minimums
apply. See "Dividends, Distributions and Tax Matters -- Dividends and
Distributions" in the Prospectus. To effect this option, please contact your
authorized dealer. For more information concerning AIM Funds other than the
Fund, please obtain a current prospectus by contacting your authorized dealer,
by writing to A I M Fund Services, Inc., P.O. Box 4739, Houston, Texas
77210-4739, or by calling toll free (800) 959-4246.
    
 
- --------------------------------------------------------------------------------
 
                                     TAXES
 
- --------------------------------------------------------------------------------
 
TAXATION OF THE FUND
   
To continue to qualify for treatment as a regulated investment company ("RIC")
under the Code, the Fund must distribute to its shareholders for each taxable
year at least 90% of its investment company taxable income (consisting generally
of net investment income and net short-term capital gain) ("Distribution
Requirement") and must meet several additional requirements. These requirements
include the following: (1) the Fund must derive at least 90% of its gross income
each taxable year from dividends, interest, payments with respect to securities
loans and gains from the sale or other disposition of securities, or other
income derived with respect to its business of investing in securities; and (2)
the Diversification Requirements.
    
 
The Fund will invest its assets in shares of the Underlying Theme Funds, cash
and money market instruments. Accordingly, the Fund's income will consist of
distributions from the Underlying Theme Funds, net gains realized from the
disposition of Underlying Theme Fund shares and interest. If an Underlying Theme
Fund qualifies for treatment as a RIC under the Code -- each has done so for its
past taxable years and intends to continue to do so for its current and future
taxable years -- (1) dividends paid to the Fund from the Underlying Theme Fund's
investment company taxable income (which may include net gains from certain
foreign currency transactions) will be taxable to the Fund as ordinary income to
the extent of the Underlying Theme Fund's earnings and profits and (2)
distributions paid to the Fund from the Underlying Theme Fund's net capital gain
(the excess of net long-term capital gain over net short-term capital loss),
when designated as such, will be taxable to the Fund as long-term capital gains,
regardless of how long the Fund has held the Underlying Theme Fund's shares. If
shares of an Underlying Theme Fund are purchased within 30 days before or after
 
                  Statement of Additional Information Page 34
<PAGE>
                             AIM GLOBAL TRENDS FUND
redeeming at a loss, other shares of that Underlying Theme Fund (whether
pursuant to a rebalancing of the Fund's portfolio or otherwise) all or a part of
the loss will not be deductible by the Fund and instead will increase its basis
for the newly purchased shares.
 
Although an Underlying Theme Fund will be eligible to elect to "pass-through" to
its shareholders (including the Fund) the benefit of the foreign tax credit with
respect to any foreign and U.S. possessions income taxes it pays if more than
50% in the value of its total assets at the close of any taxable year consists
of securities of foreign corporations, the Fund will not qualify to pass that
benefit through to its shareholders because of its inability to satisfy that
asset test.
 
The Fund will be subject to a nondeductible 4% excise tax to the extent it fails
to distribute by the end of any calendar year substantially all of its ordinary
income for that year and capital gain net income for the one-year period ending
on October 31 of that year, plus certain other amounts.
 
TAXATION OF THE FUND'S SHAREHOLDERS
Dividends and other distributions declared by the Fund, and payable to
shareholders of record as of a date, in October, November or December of any
year will be deemed to have been paid by the Fund and received by the
shareholders on December 31 of that year if the distributions are paid by the
Fund during the following January. Accordingly, those distributions will be
taxed to shareholders for the year in which that December 31 falls.
 
   
If Fund shares are sold at a loss after being held for six months or less, the
loss will be treated as long-term, instead of short-term, capital loss to the
extent of any capital gain distributions received on those shares. Investors
also should be aware that if shares are purchased shortly before the record date
for any dividend or other distribution, the shareholder will pay full price for
the shares and receive some portion of the price back as a taxable distribution.
    
 
Dividends paid by the Fund to a shareholder who, as to the United States, is a
nonresident alien individual, or nonresident alien fiduciary of a trust or
estate, foreign corporation or foreign partnership ("foreign shareholder")
generally will be subject to U.S. withholding tax (at a rate of 30% or lower
treaty rate). Withholding will not apply, however, to a dividend paid by the
Fund to a foreign shareholder that is "effectively connected with the conduct of
An U.S. trade or business," in which case the reporting and withholding
requirements applicable to domestic shareholders will apply. A distribution of
net capital gain by the Fund to a foreign shareholder generally will be subject
to U.S. federal income tax (at the rates applicable to domestic persons) only if
the distribution is "effectively connected" or the foreign shareholder is
treated as a resident alien individual for federal income tax purposes.
 
The foregoing is a general and abbreviated summary of certain federal tax
considerations affecting the Fund and its shareholders. Investors are urged to
consult their own tax advisers for more detailed information and for information
regarding any foreign, state and local taxes applicable to distributions
received from the Fund.
 
                  Statement of Additional Information Page 35
<PAGE>
                             AIM GLOBAL TRENDS FUND
 
                             ADDITIONAL INFORMATION
 
- --------------------------------------------------------------------------------
 
SPECIAL SERVICING AGREEMENT
   
Subject to the receipt of an exemptive order from the Securities and Exchange
Commission, a Special Servicing Agreement (the "Service Agreement") will be
entered into among AIM, a Sub-Adviser, the Underlying Theme Funds AFS and the
Trust. The Service Agreement will provide that, if the officers of any
Underlying Theme Fund, at the direction of the Trust's Board of Trustees,
determine that the aggregate expenses of the Fund are less than the estimated
savings to the Underlying Theme Fund from the operation of the Fund, the
Underlying Theme Fund will bear those expenses in proportion to the average
daily value of its shares owned by the Fund and/or the number of shareholder
accounts at the Fund. No Underlying Theme Fund will bear such expenses in excess
of the estimated savings to it. Such savings are expected to result primarily
from the elimination of numerous separate shareholder accounts which are or
would have been invested directly in the Underlying Theme Funds and the
resulting reduction in shareholder servicing costs. In this regard, the
shareholder servicing costs to any Underlying Theme Fund for servicing one
account registered to the Trust would be significantly less than the cost to
that same Underlying Theme Fund of servicing the same pool of assets contributed
in the typical fashion by a large group of individual shareholders owning small
accounts in each Underlying Theme Fund. If the Fund's costs exceed the aggregate
estimated savings to the Underlying Theme Funds, the Manager will pay the excess
on behalf of the Fund.
    
 
Rule 12b-1 distribution and service fees will not be paid in accordance with the
Service Agreement. Nor will certain non-recurring and extraordinary expenses be
payable in accordance therewith including: the fees and costs of actions, suits
or proceedings and any penalties or damages in connection therewith, to which
the Trust and/or the Fund may incur directly, or may incur as a result of its
legal obligation to provide indemnification to its officers, trustees and
agents; the fees and costs of any governmental investigation and any fines or
penalties in connection therewith; and any federal, state or local tax, or
related interest penalties or additions to tax, incurred, for example, as a
result of the Trust's failure to distribute all of its income and gains, its
failure to qualify as a RIC under the Code, or failure to timely file any
required tax returns or other filings. Amounts not payable pursuant to the
Service Agreement will be paid by the Fund.
 
AIM was organized in 1976, and along with its subsidiaries, manages or advises
approximately 90 investment company portfolios encompassing a broad range of
investment objectives. AIM is a direct, wholly owned subsidiary of A I M
Management Group Inc. ("AIM Management"), a holding company that has been
engaged in the financial services business since 1976. AIM is the sole
shareholder of the Funds' principal underwriter, AIM Distributors. AIM
Management is an indirect wholly owned subsidiary of AMVESCAP PLC, 11 Devonshire
Square, London, EC2M 4YR, England. AMVESCAP PLC and its subsidiaries are an
independent investment management group that has a significant presence in the
institutional and retail segment of the investment management industry in North
America and Europe, and a growing presence in Asia.
 
CUSTODIAN
State Street Bank and Trust Company, 225 Franklin Street, Boston, Massachusetts
02110, acts as custodian of the Fund's and the Underlying Theme Portfolios'
assets.
 
INDEPENDENT ACCOUNTANTS
   
The Trust's independent accountants are                 .
conducts annual audits of the Fund's financial statements, assists in the
preparation of the Fund's federal and state income tax returns and consults with
the Trust as to matters of accounting, regulatory filings, and federal and state
income taxation.
    
 
   
The audited financial statements of the Trust included in this Statement of
Additional Information have been examined by                 , as stated in
their opinion appearing herein, and are included in reliance upon such opinion
given upon the authority of that firm as experts in accounting and auditing.
    
 
SHAREHOLDER LIABILITY
Under Delaware law, the shareholders of the Trust enjoy the same limitations of
liability extended to shareholders of private, for-profit corporations. There is
a remote possibility, however, that under certain circumstances shareholders of
the Trust may be held personally liable for the Trust's obligations. However,
the Trust Agreement disclaims shareholder
 
                  Statement of Additional Information Page 36
<PAGE>
                             AIM GLOBAL TRENDS FUND
liability for acts or obligations of the Trust and requires that notice of such
disclaimer be given in each agreement, obligation or instrument entered into or
executed by the Trust or a trustee. The Trust Agreement provides for
indemnification from the Trust property for all losses and expenses of any
shareholder held personally liable for the Trust's obligations. Thus, the risk
of a shareholder incurring financial loss on account of such liability is
limited to circumstances in which the Trust itself would be unable to meet its
obligations and where the other party was held not to be bound by the
disclaimer.
 
NAME
Prior to May 29, 1998, the Fund operated under the name of GT Global New
Dimension Fund.
 
- --------------------------------------------------------------------------------
 
                               INVESTMENT RESULTS
 
- --------------------------------------------------------------------------------
 
   
TOTAL RETURN QUOTATIONS
    
   
The standard formula for calculating total return, as described in the
Prospectus, is as follows:
    
 
   
                          P(1+T)to the power of n=ERV
    
 
   
<TABLE>
<S>               <C>        <C>
Where                P    =  a hypothetical initial payment of $1,000.
                     T    =  average annual total return (assuming the applicable maximum sales load is
                             deducted at the beginning of the 1, 5, or 10 year periods).
                    n     =  number of years.
                     ERV  =  ending redeemable value of a hypothetical $1,000 payment at the end of the 1, 5,
                             or 10 year periods (or fractional portion of such period).
</TABLE>
    
 
   
Standard total return quotes may be accompanied by total return figures
calculated by alternative methods. For example, average annual total return may
be calculated without assuming payment of the full sales load according to the
following formula:
    
 
   
                          P(1+U)to the power of n=ERV
    
 
   
<TABLE>
<S>               <C>        <C>
Where                P    =  a hypothetical initial payment of $1,000.
                     U    =  average annual total return assuming payment of only a stated portion of, or
                             none of, the applicable maximum sales load at the beginning of the stated
                             period.
                    n     =  number of years.
                     ERV  =  ending redeemable value of a hypothetical $1,000 payment at the end of the
                             stated period.
</TABLE>
    
 
   
Cumulative total return across a stated period may be calculated as follows:
    
 
   
                          P(1+V)to the power of n=ERV
    
 
   
<TABLE>
<S>               <C>        <C>
Where                P    =  a hypothetical initial payment of $1,000.
                     V    =  cumulative total return assuming payment of all of, a stated portion of, or none
                             of, the applicable maximum sales load at the beginning of the stated period.
                    n     =  number of years.
                     ERV  =  ending redeemable value of a hypothetical $1,000 payment at the end of the
                             stated period.
</TABLE>
    
 
   
The cumulative total return for Advisor Class shares of the Fund for the period
          to December 31, 1997 was    %.
    
 
                  Statement of Additional Information Page 37
<PAGE>
                             AIM GLOBAL TRENDS FUND
 
   
PERFORMANCE INFORMATION
    
   
Total return and yield figures for the Fund are neither fixed nor guaranteed,
and the Fund's principal is not insured. Performance quotations reflect
historical information and should not be considered representative of the Fund's
performance for any period in the future. Performance is a function of a number
of factors which can be expected to fluctuate. The Fund may provide performance
information in reports, sales literature and advertisements. The Fund may also,
from time to time, quote information about the Fund published or aired by
publications or other media entities which contain articles or segments relating
to investment results or other data about the Fund. Such publications or media
entities may include the following, among others:
    
 
   
Advertising Age
Barron's
Best's Review
Broker World
Business Week
Changing Times
Christian Science Monitor
CNBC
CNN
Consumer Reports
    
   
Economist
EuroMoney
FACS of the Week
Financial Planning
    
   
Financial Product News
    
 
   
Financial Services Week
Financial World
    
   
Forbes
Fortune
Global Finance
Hartford Courant Inc.
Insurance Forum
Institutional Investor
Insurance Week
Investor's Daily
Journal of the American
    
   
  Society of CLU & ChFC
    
   
Kiplinger Letter
Money
    
 
   
Mutual Fund Forecaster
Mutual Fund Magazine
Nation's Business
New York Times
PBS
Pension World
Pensions & Investments
Personal Investor
Philadelphia Inquirer
Smart Money
USA Today
U.S. News & World Report
Wall Street Journal
Washington Post
    
 
   
The Fund and AIM Distributors may from time to time, in advertisements, sales
literature and reports furnished to present or prospective shareholders, compare
the Fund with the following, or compare the Fund's performance to performance
data of similar mutual funds as published in the following, among others:
    
 
   
Bank Rate National Monitor Index
Bear Stearns Foreign Bond Index
Bond Buyer Index
CDA/Wiesenberger Investment Company Services
  (data and mutual fund rankings and
  comparisons)
CNBC/Financial News Composite Index
COFI
Consumer Price Index
Datastream
Donoghue's
Dow Jones Industrial Average
EAFE Index
First Boston High Yield Index
Fitch (publications)
Ibbotson Associates International Bond Index
International Bank for Reconstruction and
  Development (publications)
International Finance Corporation Emerging
  Markets Database
International Financial Statistics
Lehman Bond Indices
Lipper Analytical Data Services, Inc. (data and
  mutual fund rankings and comparisons)
    
   
Micropal, Inc. (data and mutual fund rankings
  and comparisons)
    
   
Moody's Investors Service (publications)
Morgan Stanley Capital International All
  Country (AC) World Index
Morgan Stanley Capital International World
  Indices
Morningstar, Inc. (data and mutual fund rankings
  and comparisons)
NASDAQ
Organization for Economic Cooperation and
  Development (publications)
Salomon Brothers Global Telecommunications
  Index
Salomon Brothers World Government Bond
  Index-Non-U.S.
Salomon Brothers World Government Bond Index
Standard & Poor's (publications)
Standard & Poor's 500 Composite Stock Price
  Index
Stangar
Wilshire Associates
World Bank (publications and reports)
The World Bank Publication of Trends in
  Developing Countries
Worldscope
    
 
                  Statement of Additional Information Page 38
<PAGE>
                             AIM GLOBAL TRENDS FUND
 
   
The Fund may also compare its performance to rates on Certificates of Deposit
and other fixed rate investments such as the following:
    
 
   
         10-year Treasuries
       30-year Treasuries
       30-day Treasury Bills
    
 
   
Information relating to foreign market performance, capitalization and
diversification is based on sources believed to be reliable but may be subject
to revision and has not been independently verified by the Fund or AIM
Distributors. Advertising for the Fund may from time to time include discussions
of general economic conditions and interest rates. Advertising for the Fund may
also include reference to the use of the Fund as part of an individual's overall
retirement investment program. From time to time, sales literature and/or
advertisements for the Fund may disclose (i) the largest holdings in the Fund's
portfolio, (ii) certain selling group members and/or (iii) certain institutional
shareholders.
    
 
   
From time to time, the Fund's sales literature and/or advertisements may discuss
generic topics pertaining to the mutual fund industry. This includes, but is not
limited to, literature addressing general information about mutual funds,
variable annuities, dollar-cost averaging, stocks, bonds, money markets,
certificates of deposit, retirement, retirement plans, asset allocation,
tax-free investing, college planning, and inflation.
    
 
   
Although performance data may be useful to prospective investors when comparing
a Fund's performance with other funds and other potential investments, investors
should note that the methods of computing performance of other potential
investments are not necessarily comparable to the methods employed by a Fund.
    
 
GENERAL INFORMATION ABOUT THE UNDERLYING THEME PORTFOLIOS
Each Underlying Theme Portfolio may invest worldwide across industries within
the Portfolio's area of concentration without national or regional restrictions.
The ability of each Underlying Theme Portfolio to invest worldwide may allow the
portfolio managers to select industries in different economic cycles and varying
stages of development, though there is no assurance that the managers will be
successful in this selection.
 
Each Underlying Theme Portfolio's area of concentration reflects the underlying
theme of the Portfolio. AIM Distributors believes that there are certain social,
political and economic trends that may benefit one or more industries within an
Underlying Theme Portfolio's area of concentration. Of course, there is no
assurance that any of the Funds will benefit as a result.
 
HEALTH CARE FUND
From time to time the Fund and AIM Distributors will quote information including
data regarding:
 
    / / Trading volume, number of listed companies and the largest companies of
        the global health care industry
 
    / / Expenditures by various countries, regions and age groups on health care
 
    / / Population of countries, regions and age groups
 
    / / Natality and mortality rates in various regions, countries and age
        groups
 
    / / Life expectancy rates in various regions, countries and age groups
 
    / / New health care products and products seeking approval
 
    / / Health maintenance organizations (HMOs) and their enrollment growth
 
    / / Studies from, but not limited to, the American Medical Association
        showing the effectiveness of using drugs to cure illness
 
    / / Medical technology and devices in use or in development
 
    / / Regulatory environment of health care industries
 
    / / Consolidation in the health care industries
 
The information quoted has not been independently verified by the Fund or AIM
Distributors and will be based on data provided that is believed to be reliable
and accurate from sources including the following:
 
    / / Research firms such as Mehta and Isaly which publishes PHARMACEUTICAL
        PORTFOLIO RECOMMENDATIONS
 
    / / OECD and its publications such as the OECD HEALTH DATA, as supplemented
        annually
 
                  Statement of Additional Information Page 39
<PAGE>
                             AIM GLOBAL TRENDS FUND
 
    / / Morgan Stanley Capital International stock market industry indices such
        as Health & Personal Care
 
    / / The World Bank and its publications such as THE WORLD DEVELOPMENT
        REPORT, as supplemented annually
 
    / / IFC and publications such as the EMERGING STOCK MARKETS FACTBOOK
 
INFORMATION ABOUT THE GLOBAL HEALTH CARE INDUSTRIES
The Fund and the Sub-adviser believe that certain market and demographic factors
merit an investor's consideration when making a health care investment.
Worldwide standards of living and life expectancy have increased at a
substantial rate. The Sub-adviser, the investment adviser to the AIM/GT Funds,
expects this growth, which works to the general benefit of the global health
care industry, to continue at a roughly comparable rate in the future, although
no assurances can be given in this regard. Moreover, according to the
Sub-adviser, the health care industry historically has proven to be a relatively
non-cyclical industry that continues to provide goods and services to the public
in periods of economic weakness as well as economic strength.
 
The Sub-adviser believes that the anticipated increase in the world's elderly
population could increase demand for health care products and services. For
example, according to data compiled by the Sub-adviser, in Japan the number of
people age 65 and older is expected to grow over 100% by the year 2025; in
Germany, France and the U.S., the same age group should grow 40%. Similarly, the
U.S. Census Bureau predicts the number of Americans 85 and older to double in
the next 30 years. From time to time, the Fund and AIM Distributors will quote
information including, but not limited to, international data regarding
populations, birth rates, mortality rates, life expectancy, health care
expenditures, and gross domestic product vs. life expectancy. The information
quoted has not been independently verified by the Fund or AIM Distributors and
will be based on data that is believed to be reliable and accurate.
 
TELECOMMUNICATIONS FUND
From time to time the Fund and AIM Distributors will quote information including
data regarding:
 
    / / Increased usage of new technologies such as, but not limited to,
        cellular and wireless communications in emerging and established
        countries around the world
 
    / / Supply and demand of telephone equipment and services
 
    / / Regulatory environment of telecommunications industries
 
    / / Revenue, price and usage of telecommunications products and services
 
    / / Privatization and/or deregulation of telecommunications companies
 
The information quoted has not been independently verified by the Fund or AIM
Distributors and will be based on data provided that is believed to be reliable
and accurate from sources including the following:
 
    / / Salomon Brothers World Equity Telecommunications Index, which includes
        stock market data about the telecommunications industry in established
        and developing markets
 
    / / OECD and other publications from its subsidiaries such as the
        International Telecommunications Union
 
    / / Morgan Stanley Capital International stock market industry indices such
        as Telecommunications, Broadcasting & Publishing and Data Processing &
        Reproduction
 
    / / International Technology Consultants, a Washington D.C. based firm which
        publishes reports such as EASTERN EUROPEAN & SOVIET TELECOM REPORT and
        LATIN AMERICAN TELECOM REPORT
 
    / / Telegeography and other publications
 
DEREGULATION IN THE UNITED STATES
The United States has been the bellwether for deregulation of the telephone
industry. The divestiture of the Bell System from American Telephone and
Telegraph has produced competing companies in the United States. Such U.S.
market-driven competition has, for example, led to lower costs for consumers
which in turn led to greater consumer usage and to higher industrywide revenues.
The Sub-adviser expects this scenario to continue to benefit such companies in
the U.S. and similarly to be realized by the established telecommunications
companies in established economies, although no assurances can be made in this
regard.
 
                  Statement of Additional Information Page 40
<PAGE>
                             AIM GLOBAL TRENDS FUND
 
CONSUMER PRODUCTS AND SERVICES FUND
From time to time the Fund and AIM Distributors will quote information including
data regarding:
 
    / / Trading volume, number of listed companies and the largest companies
        located around the world in the consumer products and services
        industries
 
    / / Expenditures, demand and consumption by various countries, regions,
        income classes and age groups of consumer products and services
 
    / / Population of countries, regions and age groups
 
    / / Life expectancy rates in various regions, countries and age groups
 
    / / New consumer products and services in the development or manufacturing
        stages
 
    / / Income of various regions, countries and age groups
 
    / / Sales and sales growth of consumer products and services companies in
        their own country and abroad
 
    / / Sales, supply and demand of consumer products and services
 
    / / Parent companies and the products and services they distribute
 
    / / Regulatory environment of consumer products industries
 
The information quoted will not be independently verified by the Fund or AIM
Distributors and will be based on data provided that is believed to be reliable
and accurate from sources including, but not limited to, the following:
 
    / / Consumer and trade groups
 
    / / Fortune magazine and other periodicals
 
    / / The World Bank and its publications
 
    / / The International Monetary Fund (IMF) and its publications
 
    / / IFC and its publications
 
    / / OECD and its publications
 
INFRASTRUCTURE FUND
From time to time the Fund and AIM Distributors may quote information including:
 
    / / Supply and demand of telephone equipment and services, electricity,
        water, transportation, construction materials and other infrastructure
        related products and services
 
    / / Regulatory environment of infrastructure industries
 
    / / Quantity and costs of current and projected infrastructure projects
 
    / / Privatization of industries and companies
 
    / / New technologies, products and services used in infrastructure
        industries
 
    / / Infrastructure Finance Magazine and other periodicals
 
FINANCIAL SERVICES FUND
From time to time the Fund and AIM Distributors may quote information including:
 
    / / Supply and demand of financial services
 
    / / Regulatory environment of financial service industries
 
    / / Credit ratings of U.S. and non-U.S. banks
 
    / / New technologies, products and services used in the financial services
        industries
 
    / / Consolidation in the financial services industries
 
RESOURCES FUND
From time to time the Fund and AIM Distributors may quote information including:
 
    / / Supply, demand and prices of natural resources
 
    / / Regulatory environment of natural resources
 
    / / Supply, demand and prices of products manufactured from natural
        resources
 
    / / New technologies, products and services used in the natural resources
        industries
 
                  Statement of Additional Information Page 41
<PAGE>
                             AIM GLOBAL TRENDS FUND
 
                          DESCRIPTION OF DEBT RATINGS
 
- --------------------------------------------------------------------------------
 
DESCRIPTION OF COMMERCIAL PAPER RATINGS
Moody's employs the designations "Prime-1" and "Prime-2" to indicate commercial
paper having the highest capacity for timely repayment. Issuers rated Prime-1
(or supporting institutions) have a superior ability for repayment of senior
short-term debt obligations. Prime-1 repayment ability will often be evidenced
by many of the following characteristics: leading market positions in
well-established industries; high rates of return on funds employed;
conservative capitalization structure with moderate reliance on debt and ample
asset protection; broad margins in earnings coverage of fixed financial charges
and high internal cash generation; and well-established access to a range of
financial markets and assured sources of alternate liquidity. Issuers rated
Prime-2 (or supporting institutions) have a strong ability for repayment of
senior short-term debt obligations. This normally will be evidenced by many of
the characteristics cited above but to a lesser degree. Earnings trends and
coverage ratios, while sound may be more subject to variation. Capitalization
characteristics, while still appropriate, may be more affected by external
conditions. Ample alternate liquidity is maintained.
 
S&P rates commercial paper in four categories ranging from "A-1" for the highest
quality obligations to "D" for the lowest. A-1 -- This highest category
indicates that the degree of safety regarding timely payment is strong. Those
issues determined to possess extremely strong safety characteristics will be
denoted with a plus sign (+) designation. A-2 -- Capacity for timely payment on
issues with this designation is satisfactory. However, the relative degree of
safety is not as high as for issues designated "A-1." A-3 -- Issues carrying
this designation have adequate capacity for timely payment. They are, however,
more vulnerable to the adverse effects of changes in circumstances than
obligations carrying the higher designations. B -- Issues rated "B" are regarded
as having only speculative capacity for timely payment. C -- This rating is
assigned to short-term debt obligations with a doubtful capacity for payment. D
- -- Debt rated "D" is in payment default. The "D" rating category is used when
interest payments or principal payments are not made on the date due, even if
the applicable grace period has not expired, unless S&P believes that such
payments will be made during such grace period.
 
DESCRIPTION OF BOND RATINGS
Moody's rates the long-term debt securities issued by various entities from
"Aaa" to "C." Investment Grade Ratings are the first four categories:
 
        Aaa -- Best quality. These securities carry the smallest degree of
    investment risk and are generally referred to as "gilt edged." Interest
    payments are protected by a large or by an 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 -- High quality by all standards. Together with the Aaa group they
    comprise what are generally known as high grade bonds. They are rated lower
    than the best bonds because margins of protection may not be as large as in
    Aaa securities or fluctuation of protective elements may be of greater
    amplitude or there may be other elements present which make the long-term
    risk appear somewhat larger than the Aaa securities.
 
        A -- Upper-medium-grade obligations. Factors giving security to
    principal and interest are considered adequate, but elements may be present
    which suggest a susceptibility to impairment sometime in the future.
 
        Baa -- Medium-grade obligations (i.e., they are neither highly protected
    nor poorly secured). Interest payments and principal security appear
    adequate for the present but certain protective elements may be lacking or
    may be characteristically unreliable over any great length of time. Such
    bonds lack outstanding investment characteristics and in fact have
    speculative characteristics as well.
 
        Ba -- Have speculative elements and their future cannot be considered as
    well-assured. Often the protection of interest and principal payments may be
    very moderate, and thereby not well safeguarded during both good and bad
    times over the future. Uncertainty of position characterizes bonds in this
    class.
 
        B -- Generally lack characteristics of the desirable investment.
    Assurance of interest and principal payments or of maintenance of other
    terms of the contract over any long period of time may be small.
 
                  Statement of Additional Information Page 42
<PAGE>
                             AIM GLOBAL TRENDS FUND
 
        Caa -- Poor standing. Such issues may be in default or there may be
    present elements of danger with respect to principal or interest.
 
        Ca -- Speculative in a high degree. Such issues are often in default or
    have other marked shortcomings.
 
        C -- Lowest rated class of bonds. Issues so rated can be regarded as
    having extremely poor prospects of ever attaining any real investment
    standing.
 
ABSENCE OF RATING: Where no rating has been assigned or where a rating has been
suspended or withdrawn, it may be for reasons unrelated to the quality of the
issue.
 
Should no rating be assigned, the reason may be one of the following:
 
    1.  An application for rating was not received or accepted.
 
    2.  The issue or issuer belongs to a group of securities or companies that
       are not rated as a matter of policy.
 
    3.  There is a lack of essential data pertaining to the issue or issuer.
 
    4.  The issue was privately placed, in which case the rating is not
       published in Moody's publications.
 
Suspension or withdrawal may occur if new and material circumstances arise, the
effects of which preclude satisfactory analysis; if there is no longer available
reasonable up-to-date data to permit a judgment to be formed; if a bond is
called for redemption; or for other reasons.
 
Note: Moody's applies numerical modifiers 1, 2 and 3 in each generic rating
classification from Aa to B in its corporate bond rating system. The modifier 1
indicates that the company ranks in the higher end of its generic rating
category; the modifier 2 indicates a mid-range ranking; and the modifier 3
indicates that the issue ranks in the lower end of its generic rating category.
 
S&P rates the securities debt of various entities in categories ranging from
"AAA" to "D" according to quality. Investment grade ratings are the first four
categories:
 
        AAA -- Highest rating. Capacity to pay interest and repay principal is
    extremely strong.
 
        AA -- Very strong capacity to pay interest and repay principal and
    differs from the higher rated issues only in a small degree.
 
        A -- Has a strong capacity to pay interest and repay principal although
    it is somewhat more susceptible to the adverse effects of changes in
    circumstances and economic conditions than debt in higher rated categories.
 
        BBB -- Regarded as having adequate capacity to pay interest and repay
    principal. Whereas it normally exhibits adequate protection parameters,
    adverse economic conditions or changing circumstances are more likely to
    lead to a weakened capacity to pay interest and repay principal for debt in
    this category than in higher rated categories.
 
        BB, B, CCC, CC, C -- Debt rated "BB," "B," "CCC," "CC," and "C" is
    regarded, on balance, as predominantly speculative with respect to capacity
    to pay interest and repay principal in accordance with the terms of the
    obligation. "BB" indicates the lowest degree of speculation and "C" the
    highest degree of speculation. While such debt will likely have some quality
    and protective characteristics, these are outweighed by large uncertainties
    or major risk exposures to adverse conditions.
 
        BB -- Has less near-term vulnerability to default than other speculative
    issues. However, it faces major ongoing uncertainties or exposure to adverse
    business, financial, or economic conditions which could lead to inadequate
    capacity to meet timely interest and principal payments. The "BB" rating
    category is also used for debt subordinated to senior debt that is assigned
    an actual or implied "BBB-" rating.
 
        B -- Has a greater vulnerability to default but currently has the
    capacity to meet interest payments and principal repayments. Adverse
    business, financial, or economic conditions will likely impair capacity or
    willingness to pay interest and repay principal. The "B" rating category is
    also used for debt subordinated to senior debt that is assigned an actual or
    implied "BB" or "BB-" rating.
 
        CCC -- Has a currently identifiable vulnerability to default, and is
    dependent upon favorable business, financial, and economic conditions to
    meet timely payment of interest and repayment of principal. In the event of
    adverse business, financial, or economic conditions, it is not likely to
    have the capacity to pay interest and repay principal. The "CCC" rating
    category is also used for debt subordinated to senior debt that is assigned
    an actual or implied "B" or "B-" rating.
 
                  Statement of Additional Information Page 43
<PAGE>
                             AIM GLOBAL TRENDS FUND
 
        CC -- Typically applied to debt subordinated to senior debt that is
    assigned an actual or implied "CCC" rating.
 
        C -- Typically applied to debt subordinated to senior debt that is
    assigned an actual or implied "CCC-" debt rating. The "C" rating may be used
    to cover a situation where a bankruptcy petition has been filed, but debt
    service payments are continued.
 
        C1 -- Reserved for income bonds on which no interest is being paid.
 
        D -- In payment default. The "D" category is used when interest payments
    or principal payments are not made on the date due even if the applicable
    grace period has not expired, unless S&P believes that such payments will be
    made during such grace period. This rating will also be used upon the filing
    of a bankruptcy petition if debt service payments are jeopardized.
 
PLUS (+) OR MINUS (-): The ratings from "AA" to "CCC" may be modified by the
addition of a plus or minus sign to show relative standing within the major
rating categories.
 
NR: Indicates that no public rating has been requested, that there is
insufficient information on which to base a rating, or that S&P does not rate a
particular type of obligation as a matter of policy.
 
- --------------------------------------------------------------------------------
 
                              FINANCIAL STATEMENTS
 
- --------------------------------------------------------------------------------
   
The audited financial statements of the Fund as of December 31, 1997 and for the
fiscal year then ended, and the unaudited financial statements as of June 30,
1998 and for the six months then ended, appear on the following pages.
    
 
                  Statement of Additional Information Page 44
<PAGE>
                                AIM SERIES TRUST
 
                           PART C: OTHER INFORMATION
 
ITEM 24. FINANCIAL STATEMENTS AND EXHIBITS
 
   
    (a) FINANCIAL STATEMENTS -- To be Filed.
    
 
    (b) EXHIBITS:
 
   
         (1)        Registrant's Agreement and Declaration of Trust dated May 7,
                    1998 (4).
         (2)        Registrant's By-Laws dated May 7, 1998 (4).
         (3)        Not applicable.
         (4)        Provisions of instruments defining the rights of holders of
                    Registrant's securities are contained in the Agreement and
                    Declaration of Trust Articles II, VI, VII, VIII and IX and
                    By-laws Articles IV, V, VI, VII and VIII, which are included
                    as part of Exhibits (b)(1) and (2) of this Registration
                    Statement.
         (5)(a)     Form of Investment Management and Administration Contract
                    (4).
         (5)(b)     Form of Investment Sub-Advisory and Sub-Administration
                    Contract (4).
         (6)(a)     Form of Distribution Agreement with respect to Class A and
                    Class C shares (4).
         (6)(b)     Form of Distribution Agreement with respect to Class B
                    shares (4).
         (6)(c)     Form of Distribution Agreement with respect to Advisor Class
                    shares (4).
         (7)        Not applicable.
         (8)        Form of Custodian Agreement between Registrant and State
                    Street Bank and Trust Company (4).
         (9)(a)     Transfer Agency Contract -- To be Filed.
         (9)(b)     Form of Fund Accounting and Pricing Agent Agreement (4).
         (9)(c)     Other material contracts:
 
    
 
   
                 (i) Form of Selected Dealer Agreement (4).
    
 
   
                (ii) Form of Bank Sales Contract (4).
    
 
   
               (iii) Form of Shareholder Service Agreement (4).
    
 
   
                (iv) Form of Bank Shareholder Service Agreement (4).
    
 
   
                 (v) Form of Service Agreement for Bank Trust Department and for
                     Broker -- To be Filed.
    
 
   
        (10)(a)     Opinion and Consent of Counsel (4).
        (10)(b)     Opinion and Consent of Delaware Counsel (4).
        (11)        Consent of Coopers & Lybrand L.L.P., Independent Accountants
                    -- To be Filed.
        (12)        Not applicable.
        (13)        Letter of Investment Intent (1).
        (14)(a)     IRA Application (4).
        (14)(b)     SEP and SARSEP IRA Adoption Agreement (4).
 
                                      C-1
    
<PAGE>
   
<TABLE>
<S>                 <C>
        (14)(c)     Profit Sharing/Money Purchase Pension Plan (4).
        (14)(d)     403(b) Plan (4).
        (14)(e)     SIMPLE IRA Application (4).
        (14)(f)     Roth IRA Application (4).
        (15)(a)     Form of Distribution Plan adopted pursuant to Rule 12b-1
                    with respect to Class A and Class C shares (4).
        (15)(b)     Form of Distribution Plan adopted pursuant to Rule 12b-1
                    with respect to Class B shares (4).
        (16)        Schedule for Computation of Performance Quotations -- None.
        (17)        Financial Data Schedule (3).
        (18)        Multiple Class Plan adopted pursuant to Rule 18f-3 -- Filed
                    herewith.
</TABLE>
    
 
Other Exhibits:
 
   
        (a)         Power of Attorney for Helge K. Lee and Michael A. Silver for
                    AIM Series Trust (4).
 
- ------------------------
    
(1) Incorporated by reference to the identically enumerated Exhibit of
    Pre-Effective Amendment No. 1 to the Registration Statement on Form N-1A,
    filed on August 22, 1997.
 
(2) Incorporated by reference to the identically enumerated Exhibit of
    Post-Effective Amendment No. 1 to the Registration Statement on Form N-1A,
    filed on October 31, 1997.
 
(3) Incorporated by reference to the identically enumerated Exhibit of
    Post-Effective Amendment No. 2 to the Registration Statement on Form N-1A,
    filed on March 4, 1998.
 
   
(4) Incorporated by reference to the identically enumerated Exhibit of
    Post-Effective Amendment No. 4 to the Registration Statement on Form N-1A,
    filed on June 1, 1998.
    
 
ITEM 25. PERSONS CONTROLLED BY OR UNDER COMMON CONTROL WITH REGISTRANT
 
    None.
 
ITEM 26. NUMBER OF HOLDERS OF SECURITIES
 
   
<TABLE>
<CAPTION>
                                                                                                 NUMBER OF RECORD
                                                                                                   HOLDERS AS OF
TITLE OF CLASS                                                                                      MAY 7, 1998
- ----------------------------------------------------------------------------------------------  -------------------
<S>                                                                                             <C>
   Share of Beneficial Interest in:
      AIM Global Trends Fund -- Class A.......................................................           2,103
      AIM Global Trends Fund -- Class B.......................................................           2,482
      AIM Global Trends Fund -- Class C.......................................................              63
      AIM Global Trends Fund -- Advisor Class.................................................             152
</TABLE>
    
 
ITEM 27. INDEMNIFICATION
 
    The Registrant's Agreement and Declaration of Trust dated May 7, 1998,
provides, among other things, (1) that a Trustee shall not be liable for any
act, omission, or obligation of the Registrant or any Trustee (except for
liability to the Registrant or its shareholders by reason of willful
misfeasance, bad faith, gross negligence, or reckless disregard of the Trustee's
duties); (2) that the Trustees and Officers shall be indemnified by the
Registrant to the fullest extent permitted by the Delaware Business Trust Act
and other applicable law; and (3) that the shareholders and former shareholders
of the Registrant shall be held harmless by the Registrant (or applicable
portfolio or class) from personal liability arising from their status as such,
 
                                      C-2
<PAGE>
and shall be indemnified by the Registrant (or applicable portfolio or class)
against all loss and expense arising from such personal liability in accordance
with the Registrant's By-Laws and applicable law.
 
ITEM 28. BUSINESS AND OTHER CONNECTIONS OF INVESTMENT ADVISER AND SUB-ADVISER
 
    See the material under the heading "Management" included in Part A
(Prospectus) of this Amendment and the material appearing under the headings
"Trustees and Officers" and "Management" included in Part B (Statement of
Additional Information) of this Amendment. Information as to the Directors and
Officers of A I M Advisors, Inc. and INVESCO (NY), Inc. is included in Schedule
A and Schedule D of Part I of each entity's Form ADV (File No. 801-12313 and
File No. 801-10254, respectively), filed with the Securities and Exchange
Commission, which are incorporated herein by reference thereto.
 
ITEM 29. PRINCIPAL UNDERWRITERS
 
   
    (a) A I M Distributors, Inc. is also the principal underwriter for the
following other investment companies: AIM Advisor Funds, Inc. (which includes
five funds: AIM Advisor Flex Fund, AIM Advisor International Value Fund, AIM
Advisor Large Cap Value Fund, AIM Advisor Multiflex Fund and AIM Advisor Real
Estate Fund); AIM Equity Funds, Inc. (which includes six funds: AIM Aggressive
Growth Fund, AIM Blue Chip Fund, AIM Capital Development Fund, AIM Charter Fund,
AIM Constellation Fund and AIM Weingarten Fund); AIM Funds Group (which includes
nine funds: AIM Balanced Fund, AIM Global Utilities Fund, AIM High Yield Fund,
AIM Income Fund, AIM Intermediate Government Fund, AIM Money Market Fund, AIM
Municipal Bond Fund, AIM Select Growth Fund and AIM Value Fund); AIM
International Funds, Inc. (which includes six funds: AIM Asian Growth Fund, AIM
European Development Fund, AIM International Equity Fund, AIM Global Aggressive
Growth Fund, AIM Global Growth Fund and AIM Global Income Fund); AIM Investment
Securities Funds (which includes one fund: AIM Limited Maturity Treasury Fund);
AIM Summit Fund, Inc.; AIM Tax-Exempt Funds, Inc. (which includes four funds:
AIM High Income Municipal Fund, AIM Tax-Exempt Bond Fund of Connecticut, AIM
Tax-Exempt Cash Fund and AIM Tax-Free Intermediate Fund); AIM Variable Insurance
Funds, Inc. (which includes thirteen funds: AIM V.I. Aggressive Growth Fund, AIM
V.I. Balanced Fund, AIM V.I. Capital Appreciation Fund, AIM V.I. Capital
Development Fund and AIM V.I. High Yield Fund) AIM V.I. Diversified Income Fund,
AIM V.I. Global Utilities Fund, AIM V.I. Government Securities Fund, AIM V.I.
Growth Fund, AIM V.I. Growth and Income Fund, AIM V.I. International Equity
Fund, AIM V.I. Money Market Fund, AIM V.I. Value Fund; AIM Growth Series (which
includes eight funds: AIM America Value Fund, AIM Small Cap Equity Fund, AIM Mid
Cap Growth Fund, AIM Europe Growth Fund, AIM International Growth Fund, AIM
Japan Growth Fund, AIM New Pacific Growth Fund, and AIM Worldwide Growth Fund);
AIM Investment Funds, Inc. (which includes thirteen funds: AIM Strategic Income
Fund, AIM Global Government Income Fund, AIM Global High Income Fund, AIM Global
Growth & Income Fund, AIM Latin American Growth Fund, AIM Global
Telecommunications Fund, AIM Global Health Care Fund, AIM Global Financial
Services Fund, AIM Global Infrastructure Fund, AIM Global Consumer Products and
Services Fund, AIM Global Resources Fund, AIM Emerging Markets Fund and AIM
Developing Markets Fund); AIM Investment Portfolios, Inc. (which includes one
fund: AIM Dollar Fund); and GT Global Floating Rate Fund, Inc.
    
 
                                      C-3
<PAGE>
    (b) Directors and Officers of A I M Distributors, Inc.
 
    The business address of each person listed is 11 Greenway Plaza, Suite 100,
Houston, Texas 77046-1173.
 
<TABLE>
<CAPTION>
NAME AND PRINCIPAL                      POSITION AND OFFICES WITH
BUSINESS ADDRESS                        PRINCIPAL UNDERWRITER
- --------------------------------------  ---------------------------------------------------------------------------
<S>                                     <C>
 
Charles T. Bauer                        Chairman of the Board of Directors
 
Michael J. Cemo                         President & Director
 
Gary T. Crum                            Director
 
Robert H. Graham                        Senior Vice President & Director
 
William G. Littlepage                   Senior Vice President & Director
 
John J. Caldwell                        Senior Vice President
 
Marilyn M. Miller                       Senior Vice President
 
James L. Salners                        Senior Vice President
 
Gordon J. Sprague                       Senior Vice President
 
Michael C. Vessels                      Senior Vice President
 
B.J. Thompson                           First Vice President
 
James R. Anderson                       Vice President
 
John J. Arthur                          Vice President & Treasurer
 
Mary K. Coleman                         Vice President
 
Melville B. Cox                         Vice President & Chief Compliance Officer
 
Charles R. Dewey                        Vice President
 
Sidney M. Dilgren                       Vice President
 
Tony D. Green                           Vice President
 
William H. Kleh                         Vice President
 
Ofelia M. Mayo                          Vice President, General Counsel & Assistant Secretary
 
Terri L. Ransdell                       Vice President
 
Carol F. Relihan                        Vice President
 
Kamala C. Sachidanandan                 Vice President
</TABLE>
 
                                      C-4
<PAGE>
<TABLE>
<CAPTION>
NAME AND PRINCIPAL                      POSITION AND OFFICES WITH
BUSINESS ADDRESS                        PRINCIPAL UNDERWRITER
- --------------------------------------  ---------------------------------------------------------------------------
<S>                                     <C>
Frank V. Serebrin                       Vice President
 
Christopher T. Simutis                  Vice President
 
Robert D. Van Sant, Jr.                 Vice President
 
Gary K. Wendler                         Vice President
 
David E. Hessel                         Assistant Vice President, Assistant Treasurer & Controller
 
Kathleen J. Pflueger                    Secretary
 
Luke P. Beausoleil                      Assistant Vice President
 
Tisha B. Christopher                    Assistant Vice President
 
Glenda A. Dayton                        Assistant Vice President
 
Kathleen M. Douglas                     Assistant Vice President
 
Terri N. Fiedler                        Assistant Vice President
 
Mary E. Gentempo                        Assistant Vice President
 
Jeffrey L. Horne                        Assistant Vice President
 
Melissa E. Hudson                       Assistant Vice President
 
Jodie L. Johnson                        Assistant Vice President
 
Kathryn A. Jordan                       Assistant Vice President
 
Wayne W. LaPlante                       Assistant Vice President
 
Kim T. Lankford                         Assistant Vice President
 
Ivy B. McLemore                         Assistant Vice President
 
David B. O'Neil                         Assistant Vice President
 
Patricia M. Shyman                      Assistant Vice President
 
Nicholas D. White                       Assistant Vice President
 
Norman W. Woodson                       Assistant Vice President
 
Nancy L. Martin                         Assistant General Counsel & Assistant Secretary
 
Samuel D. Sirko                         Assistant General Counsel & Assistant Secretary
 
Stephen I. Winer                        Assistant Secretary
</TABLE>
 
                                      C-5
<PAGE>
    (c) None.
 
ITEM 30. LOCATION OF ACCOUNTS AND RECORDS
 
    Accounts, books, and other records required by Rules 31a-1 and 31a-2 under
the Investment Company Act of 1940, as amended, are maintained and held in the
offices of the Registrant and its sub-adviser, INVESCO (NY), Inc., 50 California
Street, 27th Floor, San Francisco, CA 94111.
 
   
    Records covering shareholder accounts and portfolio transactions are also
maintained and kept by the Registrant's Transfer Agent, A I M Fund Services,
Inc., 11 Greenway Plaza, Suite 100, Houston, Texas 77046, and by the
Registrant's Custodian, State Bank and Trust Company, 225 Franklin Street,
Boston, MA 02110.
    
 
ITEM 31. MANAGEMENT SERVICES
 
    None.
 
ITEM 32. UNDERTAKINGS
 
    None.
 
                                      C-6
<PAGE>
                                   SIGNATURES
 
   
    Pursuant to the requirements of the Securities Act of 1933, as amended, and
the Investment Company Act of 1940, as amended, the Registrant has duly caused
this Post-Effective Amendment to this Registration Statement to be signed on its
behalf by the undersigned, thereto duly authorized, in the City of San
Francisco, and the State of California, on the 6th day of July, 1998.
    
 
                                          AIM SERIES TRUST
                                             WILLIAM J. GUILFOYLE
 
- ------------------------------------------------------------------------------
                                             William J. Guilfoyle*
                                            President
 
   
    Pursuant to the requirements of the Securities Act of 1933, this
Post-Effective Amendment has been signed below by the following person in the
capacities indicated on the 6th day of July, 1998.
    
 
WILLIAM J. GUILFOYLE
- ----------------------------------------  President and Trustee
William J. Guilfoyle*                     (Principal Executive Officer)
 
/S/  KENNETH W. CHANCEY
- ----------------------------------------  Vice President and Principal
Kenneth W. Chancey                        Accounting Officer
 
C. Derek Anderson*                        Trustee
 
Arthur C. Patterson*                      Trustee
 
Frank S. Bayley*                          Trustee
 
Ruth H. Quigley*                          Trustee
 
   
*By: /S/  MICHAEL A. SILVER
     -----------------------------------
     Michael A. Silver
     Attorney-in-Fact, pursuant to
     Power of Attorney previously filed
 
                                      C-7
    
<PAGE>
                               INDEX TO EXHIBITS
 
   
<TABLE>
<CAPTION>
 EXHIBIT
 NUMBER                                                      DESCRIPTION
- ---------  ---------------------------------------------------------------------------------------------------------------
<C>        <S>        <C>        <C>
   (1)                Registrant's Declaration of Trust dated May 7, 1998 (4).
   (2)                Registrant's By-Laws dated May 7, 1998 (4).
   (3)                Not applicable.
   (4)                Provisions of instruments defining the rights of holders of Registrant's securities are contained in
                      the Declaration of Trust Articles II, VI, VII, VIII and IX and By-laws Articles IV, V, VI, VII and
                      VIII, which are included as part of Exhibits (b)(1) and (2) of this Registration Statement.
   (5)     (a)        Form of Investment Management and Administration Contract (4).
   (5)     (b)        Form of Investment Sub-Advisory and Sub-Administration Contract (4).
   (6)     (a)        Form of Distribution Agreement with respect to Class A and Class C shares (4).
   (6)     (b)        Form of Distribution Agreement with respect to Class B shares (4).
   (6)     (c)        Form of Distribution Agreement with respect to Advisor Class shares (4).
   (7)                Not applicable.
   (8)                Form of Custodian Agreement between Registrant and State Street Bank and Trust Company (4).
   (9)     (a)        Transfer Agency Contract -- To be Filed.
   (9)     (b)        Form of Fund Accounting and Pricing Agent Agreement (4).
   (9)     (c)        Other material contracts:
                      (i) Form of Selected Dealer Agreement (4).
                      (ii) Form of Bank Sales Contract (4).
                      (iii) Form of Shareholder Service Agreement (4).
                      (iv) Form of Bank Shareholder Service Agreement (4).
                      (v) Form of Service Agreement for Bank Trust Department and for Broker -- Filed herewith.
  (10)     (a)        Opinion and Consent of Counsel (4).
  (10)     (b)        Opinion and Consent of Delaware Counsel (4).
  (11)                Consent of Coopers & Lybrand L.L.P., Independent Accountants -- To be Filed.
  (12)                Not applicable.
  (13)                Letter of Investment Intent (1).
  (14)     (a)        IRA Application (4).
  (14)     (b)        SEP and SARSEP IRA Adoption Agreement (4).
  (14)     (c)        Profit Sharing/Money Purchase Pension Plan (4).
  (14)     (d)        403(b) Plan (4).
  (14)     (e)        SIMPLE IRA Application (4).
  (14)     (f)        Roth IRA Application (4).
  (15)     (a)        Form of Distribution Plan adopted pursuant to Rule 12b-1 with respect to Class A
                      and Class C shares (4).
  (15)     (b)        Form of Distribution Plan adopted pursuant to Rule 12b-1 with respect to Class B
                      shares (4).
  (16)                Schedule for Computation of Performance Quotations -- None.
  (17)                Financial Data Schedule (3).
  (18)                Multiple Class Plan adopted pursuant to Rule 18f-3 -- Filed herewith.
</TABLE>
    

<PAGE>

                                MULTIPLE CLASS PLAN
                                         OF
                                AIM INVESTMENT FUNDS
                             AIM INVESTMENT PORTFOLIOS
                                 AIM GROWTH SERIES
                                  AIM SERIES TRUST


1.   This Multiple Class Plan ("Plan") adopted in accordance with Rule 18f-3
     under the Act shall govern the terms and conditions under which the Funds
     may issue separate Classes of Shares representing interests in one or more
     Portfolios of each Fund.

2.   DEFINITIONS. As used herein, the terms set forth below shall have the
     meanings ascribed to them below.

     a.   ACT - Investment Company Act of 1940, as amended.

     b.   ADVISOR CLASS SHARES - shall mean those Shares of a Fund designated as
          Advisor Class Shares in the Fund's organizing documents.

     c.   CDSC - contingent deferred sales charge.

     d.   CDSC PERIOD - the period of years following acquisition of Shares
          during which such Shares may be assessed a CDSC upon redemption.

     e.   CLASS - a class of Shares of a Fund representing an interest in a
          Portfolio.

     f.   CLASS A SHARES - shall mean those Shares designated as Class A Shares
          in the Fund's organizing documents, as well as those Shares deemed to
          be Class A Shares for purposes of this Plan.

     g.   CLASS B SHARES - shall mean those Shares designated as Class B Shares
          in the Fund's organizing documents.

     h.   CLASS C SHARES - shall mean those Shares designated as Class C Shares
          in the Fund's organizing documents, as well as those Shares deemed to
          be Class C Shares for purposes of this Plan.  Class C Shares may not
          be available for each Fund.

     i.   DIRECTORS - the directors or trustees of a Fund.

     j.   DISTRIBUTION EXPENSES - expenses incurred in activities which are
          primarily intended to result in the distribution and sale of Shares as
          defined in a Plan of Distribution and/or agreements relating thereto.

     k.   DISTRIBUTION FEE - a fee paid by a Fund to the Distributor to
          compensate the Distributor for Distribution Expenses.

<PAGE>

     l.   DISTRIBUTOR - A I M Distributors, Inc. or Fund Management Company, as
          applicable.

     m.   FUND - each of AIM Investment Funds, AIM Investment Portfolios, AIM
          Growth Series, and AIM Series Trust.

     n.   PLAN OF DISTRIBUTION - any plan adopted under Rule 12b-1 under the Act
          with respect to payment of a Distribution Fee.

     o.   PORTFOLIO - a series of the Shares of a Fund constituting a separate
          investment portfolio of the Fund.

     p.   SERVICE FEE - a fee paid to financial intermediaries for the ongoing
          provision of personal services to Fund shareholders and/or the
          maintenance of shareholder accounts. 

     q.   SHARE - a share of common stock or of beneficial interest in a Fund,
          as applicable.

3.   ALLOCATION OF INCOME AND EXPENSES.

     a.   DISTRIBUTION AND SERVICE FEES - Each Class shall bear directly any and
          all Distribution Fees and/or Service Fees payable by such Class
          pursuant to a Plan of Distribution adopted by the Fund with respect to
          such Class.

     b.   ALLOCATION OF OTHER EXPENSES - Each Class shall bear proportionately
          all other expenses incurred by a Fund based on the relative net assets
          attributable to each such Class.

     c.   ALLOCATION OF INCOME, GAINS, AND LOSSES - Except to the extent
          provided in the following sentence, each Portfolio will allocate
          income and realized and unrealized capital gains and losses to a Class
          based on the relative net assets of each Class. Notwithstanding the
          foregoing, each Portfolio that declares dividends on a daily basis
          will allocate income on the basis of settled shares.

     d.   WAIVER AND REIMBURSEMENT OF EXPENSES - A Portfolio's adviser,
          underwriter, or any other provider of services to the Portfolio may
          waive or reimburse the expenses of a particular Class or Classes.

4.   DISTRIBUTION AND SERVICING ARRANGEMENTS.  The distribution and servicing
     arrangements identified below will apply for the following Classes offered
     by a Fund with respect to a Portfolio. The provisions of the Fund's
     prospectus describing the distribution and servicing arrangements in detail
     are incorporated herein by this reference.

     a.   CLASS A SHARES. Class A Shares shall be offered at net asset value
          plus a front-end sales charge as approved from time to time by the
          Directors and set forth in the Fund's prospectus, which may be reduced
          or eliminated for certain money market fund shares, for larger
          purchases, under a combined purchase privilege, under a right of
          accumulation, under a letter of intent or for certain categories of
          purchasers as permitted by Rule 22(d) 


                                          2

<PAGE>

          of the Act and as set forth in the Fund's prospectus. Class A Shares
          that are not subject to a front-end sales charge as a result of the
          foregoing shall be subject to a CDSC for the CDSC Period set forth in
          Section 5(a) of this Plan if so provided in the Fund's prospectus. The
          offering price of Shares subject to a front-end sales charge shall be
          computed in accordance with Rule 22c-1 and Section 22(d) of the Act
          and the rules and regulations thereunder. Class A Shares shall be
          subject to ongoing Service Fees and/or Distribution Fees approved from
          time to time by the Directors and set forth in the Fund's prospectus.

     b.   CLASS B SHARES.  Class B Shares shall be (i) offered at net asset
          value, (ii) subject to a CDSC for the CDSC Period set forth in Section
          5(b), (iii) subject to ongoing Service Fees and Distribution Fees
          approved from time to time by the Directors and set forth in the
          Fund's prospectus, and (iv) to the extent provided for in the Fund's
          prospectus, converted to Class A Shares eight years from the end of
          the calendar month in which the shareholder's order to purchase was
          accepted as set forth in the Fund's prospectus, except that Class B
          Shares of AIM Series Trust which were acquired prior to June 1, 1998
          shall convert to Class A Shares as of the close of business on the
          last business day of the month in which the seventh anniversary of the
          initial issuance of such Class B Shares occurs.

     c.   CLASS C SHARES. Class C Shares shall be (i) offered at net asset
          value, (ii) subject to a CDSC for the CDSC Period set forth in Section
          5(c), and (iii) subject to ongoing service Fees and Distribution Fees
          approved from time to time by the Directors and set forth in the
          Fund's prospectus.

     d.   ADVISOR CLASS SHARES. Advisor Class Shares shall be (i) offered at net
          asset value and (ii) offered only to certain categories of investors
          as approved from time to time by the Trustees and as set forth in the
          Fund's prospectus.

5.   CDSC. A CDSC shall be imposed upon redemptions of Class A Shares that do
     not incur a front-end sales charge and of Class B Shares and Class C Shares
     as follows:

     a.   CLASS A SHARES. The CDSC Period for Class A Shares shall be the period
          set forth in the Fund's prospectus. The CDSC Rate shall be as set
          forth in the Fund's prospectus, the relevant portions of which are
          incorporated herein by this reference. No CDSC shall be imposed on
          Class A Shares unless so provided in a Fund's prospectus. 

     b.   CLASS B SHARES. The CDSC Period for the Class B Shares shall be six
          years.  The CDSC Rate for the Class B Shares shall be as set forth in
          the Fund's prospectus, the relevant portions of which are incorporated
          herein by this reference. 

     c.   CLASS C SHARES. The CDSC Period for the Class C Shares shall be one
          year. The CDSC Rate for the Class C Shares shall be as set forth in
          the Fund's prospectus, the relevant portions of which are incorporated
          herein by reference.


                                          3

<PAGE>

     d.   METHOD OF CALCULATION. The CDSC shall be assessed on an amount equal
          to the lesser of the then current market value or the cost of the
          Shares being redeemed. No CDSC shall be imposed on increases in the
          net asset value of the Shares being redeemed above the initial
          purchase price. No CDSC shall be assessed on Shares derived from
          reinvestment of dividends or capital gains distributions. The order in
          which Shares are to be redeemed when not all of such Shares would be
          subject to a CDSC shall be determined by the Distributor in accordance
          with the provisions of Rule 6c-10 under the Act.

     e.   WAIVER. The Distributor may in its discretion waive a CDSC otherwise
          due upon the redemption of Shares and disclosed in the Fund's
          prospectus or statement of additional information and, for the Class A
          Shares, as allowed under Rule 6c-10 under the Act.

6.   EXCHANGE PRIVILEGES. Exchanges of Shares shall be permitted as follows:

     a.   Class A Shares may be exchanged for Class A Shares of such other
          mutual funds as are disclosed in the Fund's prospectus, subject to
          such terms and limitations as disclosed in the Fund's prospectus and
          statement of additional information.

     b.   Class B Shares may be exchanged for Class B Shares of such other
          mutual funds as are disclosed in the Fund's prospectus, subject to
          such terms and limitations as disclosed in the Fund's prospectus and
          statement of additional information.

     c.   Class C Shares may be exchanged for Class C Shares of such other
          mutual funds as are disclosed in the Fund's prospectus, subject to
          such terms and limitations as disclosed in the Fund's prospectus and
          statement of additional information.

     d.   Advisor Class Shares may be exchanged for Advisor Class Shares of such
          other mutual funds as are disclosed in the Fund's prospectus, subject
          to such terms and limitations as disclosed in the Fund's prospectus
          and statement of additional information.

     e.   Depending upon the Portfolio from which and into which an exchange is
          being made and when the shares were purchased, shares being acquired
          in an exchange may be acquired at their offering price, at their net
          asset value or by paying the difference in sales charges, as disclosed
          in the Fund's prospectus and statement of additional information.
          
     f.   CDSC Computation.  The CDSC payable upon redemption of Class A Shares,
          Class B Shares, and Class C Shares subject to a CDSC shall be computed
          in the manner described in the Fund's prospectus.

7.   SERVICE AND DISTRIBUTION FEES. The Service Fee and Distribution Fee
     applicable to any Class shall be those set forth in the Fund's prospectus,
     relevant portions of which are incorporated herein by this reference. All
     other terms and conditions with respect to Service Fees and Distribution
     Fees shall be governed by the Plan of Distribution adopted by the Fund with
     respect to such fees and Rule 12b-1 under the Act.


                                          4

<PAGE>

8.   CONVERSION OF CLASS B SHARES.

     a.   SHARES RECEIVED UPON REINVESTMENT OF DIVIDENDS AND DISTRIBUTIONS -
          Shares purchased through the reinvestment of dividends and
          distributions paid on Shares subject to conversion shall be treated as
          if held in a separate sub-account. Each time any Shares in a
          shareholder's account (other than Shares held in the sub-account)
          convert to Class A Shares, a proportionate number of Shares held in
          the sub-account shall also convert to Class A Shares.

     b.   CONVERSIONS ON BASIS OF RELATIVE NET ASSET VALUE - All conversions
          shall be effected on the basis of the relative net asset values of the
          two Classes without the imposition of any sales load or other charge.

     c.   AMENDMENTS TO PLAN OF DISTRIBUTION FOR CLASS A SHARES - If any
          amendment is proposed to the Plan of Distribution under which Service
          Fees and Distribution Fees are paid with respect to Class A Shares of
          a Fund that would increase materially the amount to be borne by those
          Class A Shares, then no Class B Shares shall convert into Class A
          Shares of that Fund until the holders of Class B Shares of that Fund
          have also approved the proposed amendment. If the holders of such
          Class B Shares do not approve the proposed amendment, the Directors of
          the Fund and the Distributor shall take such action as is necessary to
          ensure that the Class voting against the amendment shall convert into
          another Class identical in all material respects to Class A Shares of
          the Fund as constituted prior to the amendment.

9.   This Plan shall not take effect until a majority of the Directors of a
     Fund, including a majority of the Directors who are not interested persons
     of the Fund, shall find that the Plan, as proposed and including the
     expense allocations, is in the best interests of each Class individually
     and the Fund as a whole.

10.  This Plan may not be amended to materially change the provisions of this
     Plan unless such amendment is approved in the manner specified in Section 9
     above.


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