G T INVESTMENT FUNDS INC
485APOS, 1997-08-18
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<PAGE>
   
    AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON AUGUST 18, 1997
    
                                                              FILE NOS. 33-19338
                                                                       811-05426
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549
 
                             ---------------------
 
                                   FORM N-1A
 
            REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933
   
                        POST-EFFECTIVE AMENDMENT NO. 48
    
                                                                          /X/
 
                                      AND
        REGISTRATION STATEMENT UNDER THE INVESTMENT COMPANY ACT OF 1940
   
                                AMENDMENT NO. 44
    
                                                                          /X/
 
                            ------------------------
 
                          G.T. INVESTMENT FUNDS, INC.
               (EXACT NAME OF REGISTRANT AS SPECIFIED IN CHARTER)
 
                       50 CALIFORNIA STREET, 27TH FLOOR,
                        SAN FRANCISCO, CALIFORNIA 94111
              (ADDRESS OF PRINCIPAL EXECUTIVE OFFICES) (ZIP CODE)
              REGISTRANT'S TELEPHONE NUMBER, INCLUDING AREA CODE:
                                 (415) 392-6181
 
                            ------------------------
 
   
<TABLE>
<S>                                              <C>
          PHILLIP S. GILLESPIE, ESQ.                       ARTHUR J. BROWN, ESQ.
             CHANCELLOR LGT ASSET                         R. DARRELL MOUNTS, ESQ.
               MANAGEMENT, INC.                          KIRKPATRICK & LOCKHART LLP
       50 CALIFORNIA STREET, 27TH FLOOR               1800 MASSACHUSETTS AVENUE, N.W.,
        SAN FRANCISCO, CALIFORNIA 94111                          2ND FLOOR,
    (NAME AND ADDRESS OF AGENT FOR SERVICE)                WASHINGTON, D.C. 20036
                                                               (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
    
 
   
    / /  60 DAYS AFTER FILING PURSUANT TO PARAGRAPH (a)(1) OF RULE 485
    
 
   
    / /  ON                 PURSUANT TO PARAGRAPH (a)(1) OF RULE 485
    
 
   
    / /  75 DAYS AFTER FILING PURSUANT TO PARAGRAPH (a)(2) OF RULE 485
    
 
   
    /X/  ON NOVEMBER 1, 1997 PURSUANT TO PARAGRAPH (a)(2) OF RULE 485
    
 
    / / THIS  POST-EFFECTIVE  AMENDMENT DESIGNATES  A NEW  EFFECTIVE DATE  FOR A
        PREVIOUSLY FILED POST-EFFECTIVE AMENDMENT.
 
   
PURSUANT TO RULE  24f-2 UNDER THE  INVESTMENT COMPANY ACT  OF 1940, AS  AMENDED,
REGISTRANT HAS PREVIOUSLY ELECTED TO REGISTER AN INDEFINITE NUMBER OF ITS SHARES
OF  COMMON STOCK. A RULE 24f-2 NOTICE FOR REGISTRANT'S FISCAL YEAR ENDED OCTOBER
31, 1996, WAS FILED ON DECEMBER 27, 1996.
    
 
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
<PAGE>
                          G.T. INVESTMENT FUNDS, INC.
                             CROSS-REFERENCE SHEET
            BETWEEN ITEMS ENUMERATED IN FORM N-1A AND THIS AMENDMENT
                       PROSPECTUS -- CLASS A AND CLASS B
   
<TABLE>
<CAPTION>
ITEM NO. OF
PART A OF FORM N-1A                                      CAPTIONS IN PROSPECTUS
- ---------------------------------  ------------------------------------------------------------------
<S>                                <C>
1.  Cover Page...................  Cover Page
2.  Synopsis.....................  Prospectus Summary
3.  Condensed Financial
    Information..................  Financial Highlights
4.  General Description of
    Registrant...................  Investment Objectives and Policies; Risk Factors; Management;
                                   Other Information
5.  Management of the
    Fund.........................  Management
5A. Management's Discussion of
    Fund Performance.............  See Registrant's current Annual Report
6.  Capital Stock and Other
    Securities...................  Dividends, Other Distributions and Federal Income Taxation; Other
                                   Information
7.  Purchase of Securities Being
    Offered......................  Alternative Purchase Plan; How to Invest; How to Make Exchanges;
                                   Calculation of Net Asset Value; Management
8.  Redemption or
    Repurchase...................  Alternative Purchase Plan; How to Redeem Shares; Calculation of
                                   Net Asset Value
9.  Pending Legal
    Proceedings..................  Not applicable
 
<CAPTION>
 
                                     PROSPECTUS -- ADVISOR CLASS
 
ITEM NO. OF
PART A OF FORM N-1A                                      CAPTIONS IN PROSPECTUS
- ---------------------------------  ------------------------------------------------------------------
<S>                                <C>
1.  Cover Page...................  Cover Page
2.  Synopsis.....................  Prospectus Summary
3.  Condensed Financial
    Information..................  Financial Highlights
4.  General Description of
    Registrant...................  Investment Objectives and Policies; Risk Factors; Management;
                                   Other Information
5.  Management of the Fund.......  Management
5A. Management's Discussion of
    Fund Performance.............  See Registrant's current Annual Report
6.  Capital Stock and Other
    Securities...................  Dividends, Other Distributions and Federal Income Taxation; Other
                                   Information
7.  Purchase of Securities Being
    Offered......................  How to Invest; How to Make Exchanges; Calculation of Net Asset
                                   Value; Management
8.  Redemption or Repurchase.....  How to Redeem Shares; Calculation of Net Asset Value
9.  Pending Legal Proceedings....  Not applicable
</TABLE>
    
 
<PAGE>
                          G.T. INVESTMENT FUNDS, INC.
                             CROSS-REFERENCE SHEET
            BETWEEN ITEMS ENUMERATED IN FORM N-1A AND THIS AMENDMENT
 
           STATEMENT OF ADDITIONAL INFORMATION -- CLASS A AND CLASS B
 
   
<TABLE>
<CAPTION>
ITEM NO. OF
PART B OF FORM N-1A                         CAPTIONS IN STATEMENT OF ADDITIONAL INFORMATION
- ---------------------------------  ------------------------------------------------------------------
<S>                                <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 Objectives and Policies;
                                   Investment Limitations; Options, Futures and Currency Strategies;
                                   Risk Factors; Execution of Portfolio Transactions
14. Management of the
    Registrant...................  Directors and Executive Officers; Management
15. Control Persons and Principal
    Holders of Securities........  Directors 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; Information Relating to
                                   Sales and Redemptions
20. Tax Status...................  Taxes
21. Underwriters.................  Management
22. Calculation of Performance
    Data.........................  Investment Results
23. Financial Statements.........  Financial Statements
</TABLE>
    
 
<PAGE>
                          G.T. INVESTMENT FUNDS, INC.
                             CROSS-REFERENCE SHEET
            BETWEEN ITEMS ENUMERATED IN FORM N-1A AND THIS AMENDMENT
 
              STATEMENT OF ADDITIONAL INFORMATION -- ADVISOR CLASS
 
   
<TABLE>
<CAPTION>
ITEM NO. OF
PART B OF FORM N-1A                         CAPTIONS IN STATEMENT OF ADDITIONAL INFORMATION
- ---------------------------------  ------------------------------------------------------------------
<S>                                <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 Objectives and Policies;
                                   Investment Limitations; Options, Futures and Currency Strategies;
                                   Risk Factors; Execution of Portfolio Transactions
14. Management of the
    Registrant...................  Directors and Executive Officers; Management
15. Control Persons and Principal
    Holders of Securities........  Directors 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; Information Relating to
                                   Sales and Redemptions
20. Tax Status...................  Taxes
21. Underwriters.................  Management
22. Calculation of Performance
    Data.........................  Investment Results
23. Financial Statements.........  Financial Statements
</TABLE>
    
 
<PAGE>
                          G.T. INVESTMENT FUNDS, INC.
                      CONTENTS OF POST-EFFECTIVE AMENDMENT
 
THIS POST-EFFECTIVE AMENDMENT TO THE REGISTRATION STATEMENT OF G.T. INVESTMENT
FUNDS, INC. CONTAINS THE FOLLOWING DOCUMENTS:
 
   
<TABLE>
<S>        <C>        <C>
Facing Sheet
Cross-Reference Sheet
Contents of Post-Effective Amendment
Part A        --      Prospectus
                      -- GT Global Developing Markets Fund
              --      Prospectus -- Advisor Class
                      -- GT Global Developing Markets Fund
Part B        --      Statement of Additional Information
                      -- GT Global Developing Markets Fund
              --      Statement of Additional Information -- Advisor Class
                      -- GT Global Developing Markets Fund
Part C        --      Other Information
Signature Page
Exhibits
<FN>
- ------------------------
*  The currently effective prospectuses and statements of additional information
  for each of the following  series of the Registrant  are not affected by  this
  Amendment:  GT Global Strategic Income Fund, GT Global Government Income Fund,
  GT Global  High Income  Fund,  GT Global  Telecommunications Fund,  GT  Global
  Health  Care Fund, GT Global Financial Services Fund, GT Global Infrastructure
  Fund, GT  Global  Natural Resources  Fund,  GT Global  Consumer  Products  and
  Services Fund, GT Global Emerging Markets Fund, GT Global Latin America Growth
  Fund,  GT Global Growth &  Income Fund, GT Global  Currency Fund and GT Global
  Small Companies Fund.
</TABLE>
    
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
 
                         PROSPECTUS -- NOVEMBER 1, 1997
- --------------------------------------------------------------------------------
 
GT GLOBAL DEVELOPING MARKETS FUND (the "Fund") primarily seeks long-term capital
appreciation. Its secondary investment objective is income, to the extent
consistent with seeking capital appreciation. The Fund normally invests
substantially all of its assets in issuers in the developing (or "emerging")
markets of Asia, Europe, Latin America and elsewhere. A majority of the Fund's
assets ordinarily is invested in emerging market equity securities. The Fund may
also invest in emerging market debt securities, which will be selected based on
their potential to provide a combination of capital appreciation and current
income. There can be no assurance that the Fund will achieve its investment
objectives.
 
The Fund is managed by Chancellor LGT Asset Management, Inc. (the "Manager").
The Manager and its worldwide affiliates are part of Liechtenstein Global Trust,
a provider of global asset management and private banking products and services
to individual and institutional investors.
 
The Fund is designed for long-term investors and not as a trading vehicle. The
Fund does not represent a complete investment program, nor is it suitable for
all investors. The Fund may invest significantly in equity and high yield, high
risk ("lower quality") debt securities that are predominantly speculative.
Investments of this type are subject to a greater risk of loss of principal and
interest. The Fund's investments in securities of issuers in developing markets
involves special considerations and risks that are not typically associated with
investments in securities of issuers in the United States or in other more
established markets. Purchasers should carefully assess the risks associated
with an investment in the Fund.
 
This Prospectus sets forth concisely information an investor should know before
investing and should be read carefully and retained for future reference. A
Statement of Additional Information, dated November 1, 1997, has been filed with
the Securities and Exchange Commission ("SEC") and, as supplemented or amended
from time to time, is incorporated herein by reference. The Statement of
Additional Information is available without charge by writing to the Fund at 50
California Street, 27th Floor, San Francisco, California 94111, or by calling
(800) 824-1580. It is also available, along with other related materials, on the
SEC's Internet web site (http://www.sec.gov).
 
FUND SHARES ARE NOT DEPOSITS OR OBLIGATIONS OF, OR ENDORSED OR GUARANTEED BY,
ANY BANK, NOR ARE THEY FEDERALLY INSURED OR OTHERWISE PROTECTED BY THE FEDERAL
DEPOSIT INSURANCE CORPORATION, THE FEDERAL RESERVE BOARD, OR ANY OTHER AGENCY.
 
An investment in the Fund offers the following advantages:
 
/ / Access to Securities Markets Around the World
 
/ / Professional Management by a Leading Manager with Offices in the World's
    Major Markets
 
/ / Low $500 Minimum Investment
 
/ / Alternative Purchase Plan
 
/ / Automatic Dividend and Other Distribution Reinvestment at No Additional
    Sales Charge
 
/ / Exchange Privileges with the Corresponding Classes of the Other GT Global
    Mutual Funds
 
/ / Reduced Sales Charge Plans
 
/ / Dollar Cost Averaging Program
 
/ / Automatic Investment Plan
 
/ / Systematic Withdrawal Plan
 
/ / Portfolio Rebalancing Program
 
FOR FURTHER INFORMATION, CALL
 
(800) 824-1580 OR CONTACT YOUR FINANCIAL ADVISER.
 
[LOGO]
 
- --------------------------------------------------------------------------------
 
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>
                       GT GLOBAL DEVELOPING MARKETS FUND
 
                               TABLE OF CONTENTS
- ------------------------------------------------------------
 
<TABLE>
<CAPTION>
                                                                                              Page
                                                                                            ---------
<S>                                                                                         <C>
Prospectus Summary........................................................................          3
Financial Highlights......................................................................          6
Alternative Purchase Plan.................................................................          7
Investment Objectives and Policies........................................................          8
Risk Factors..............................................................................         14
How to Invest.............................................................................         19
How to Make Exchanges.....................................................................         26
How to Redeem Shares......................................................................         27
Shareholder Account Manual................................................................         29
Calculation of Net Asset Value............................................................         30
Dividends, Other Distributions and Federal Income Taxation................................         30
Management................................................................................         32
Other Information.........................................................................         35
</TABLE>
 
                               Prospectus Page 2
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
 
                               PROSPECTUS SUMMARY
- ------------------------------------------------------------
The following summary is qualified in its entirety by the more detailed
information appearing in the body of this Prospectus.
 
<TABLE>
<S>                            <C>                               <C>
The Fund:                                         The  Fund  is  a non-diversified  series  of  G.T. Investment  Funds,  Inc. (the
                                                  "Company").
Investment Objectives:         The Fund's  primary  investment  objective  is  long-term  capital
                               appreciation;  its secondary  objective is  income, to  the extent
                               consistent with seeking capital appreciation.
Principal Investments:         The Fund ordinarily invests a  majority of its assets in  emerging
                               market  equity securities, and also  may invest in emerging market
                               debt securities.
Principal Risk Factors:        There is no assurance  that the Fund  will achieve its  investment
                               objectives.  The Fund's net asset  value per share will fluctuate,
                               reflecting fluctuations  in  the  market value  of  its  portfolio
                               holdings.
                               The  Fund may invest in foreign securities. Investments in foreign
                               securities  involve  risks  relating  to  political  and  economic
                               developments abroad and the differences between the regulations to
                               which  U.S. and  foreign issuers  are subject.  Individual foreign
                               economies also may differ favorably  or unfavorably from the  U.S.
                               economy.  Changes in  foreign currency exchange  rates will affect
                               the Fund's net asset value, earnings and gains and losses realized
                               on sales of  securities. Securities  of foreign  companies may  be
                               less   liquid  and  their  prices  more  volatile  than  those  of
                               securities of comparable U.S. companies. The Fund normally invests
                               substantially all of  its assets in  issuers in emerging  markets.
                               Such investments entail greater risks than investing in issuers in
                               developed markets.
                               The  Fund  may engage  in  certain foreign  currency,  options and
                               futures transactions to attempt to hedge against the overall level
                               of investment and  currency risk  associated with  its present  or
                               planned  investments. Such transactions  involve certain risks and
                               transaction costs.
                               The value of debt securities held by the Fund generally fluctuates
                               inversely with interest rate  movements. Certain investment  grade
                               debt  securities may  possess speculative qualities.  The Fund may
                               invest in below investment  grade debt securities. Investments  of
                               this  type are subject to a greater  risk of loss of principal and
                               interest.
                               See "Investment Objectives and Policies" and "Risk Factors."
Investment Manager:            The Manager is part of  Liechtenstein Global Trust, a provider  of
                               global  asset management and private banking products and services
                               to  individual   and  institutional   investors,  entrusted   with
                               approximately  $   billion in total assets as of           , 1997.
                               The Manager and its worldwide asset management affiliates maintain
                               fully staffed investment offices in Frankfurt, Hong Kong,  London,
                               New York, San Francisco, Singapore, Sydney, Tokyo and Toronto. See
                               "Management."
Alternative Purchase Plan:     Investors  may  select Class  A or  Class B  shares of  the Fund's
                               common stock, each subject to  different expenses and a  different
                               sales charge structure.
  Class A Shares:              Offered  at  net  asset  value plus  any  applicable  sales charge
                               (maximum is 4.75% of public offering price) and subject to service
                               and distribution fees at the annualized rate of up to 0.50% of the
                               average daily net assets of the Class A shares.
</TABLE>
 
                               Prospectus Page 3
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
 
                               PROSPECTUS SUMMARY
                                  (Continued)
- --------------------------------------------------------------------------------
<TABLE>
<S>                            <C>                               <C>
  Class B Shares:              Offered at net  asset value (a  maximum contingent deferred  sales
                               charge  of 5% of the lesser of  the shares' net asset value or the
                               original purchase  price is  imposed on  certain redemptions  made
                               within  six years of date of  purchase) and subject to service and
                               distribution fees at  the annualized rate  of up to  1.00% of  the
                               average daily net assets of the Class B shares.
Shares Available Through:      Class  A and Class  B shares are  available through broker/dealers
                               that have entered into agreements  to sell shares with the  Fund's
                               distributor,  GT Global,  Inc. ("GT  Global"). Shares  also may be
                               acquired directly through GT Global or through exchanges of shares
                               of the other GT Global Mutual Funds, which are open-end management
                               investment companies advised and/or  administered by the  Manager.
                               See "How to Invest" and "Shareholder Account Manual."
Exchange Privileges:           Shares  of a class  of the Fund  may be exchanged  without a sales
                               charge for shares of  the corresponding class  of other GT  Global
                               Mutual Funds. See "How to Make Exchanges" and "Shareholder Account
                               Manual."
Redemptions:                   Shares may be redeemed either through broker/dealers or the Fund's
                               transfer  agent,  GT  Global  Investor  Services,  Inc. ("Transfer
                               Agent"). See  "How  to  Redeem Shares"  and  "Shareholder  Account
                               Manual."
Redemption Fee:                The  Fund will deduct a 2% redemption fee from the proceeds of all
                               redemptions of  Class  A  shares  acquired  as  a  result  of  the
                               reorganization  of G.T. Global Developing  Markets Fund, Inc. into
                               the  Fund.  The  redemption  fee  will  be  imposed  on  all  such
                               redemptions  made until [May 1], 1998. See "How to Redeem Shares."
                               See "How to Redeem Shares."
Dividends and Other            Dividends from net  investment income and  net short-term  capital
  Distributions:               gain,  net  capital  gain  and  net  gains  from  foreign currency
                               transactions, if any, are paid annually.
Reinvestment:                  Dividends and other distributions may be reinvested  automatically
                               in  Fund  shares of  the distributing  class or  in shares  of the
                               corresponding class  of other  GT Global  Mutual Funds  without  a
                               sales charge.
First Purchase:                $500 minimum ($100 for individual retirement accounts ("IRAs") and
                               reduced amounts for certain other retirement plans).
Subsequent Purchases:          $100   minimum  (reduced  amounts  for   IRAs  and  certain  other
                               retirement plans).
Net Asset Value:               Class A and Class B shares', net asset values are quoted daily  in
                               the financial section of most newspapers.
Other Features:
  Class A Shares:              Letter of Intent                  Dollar Cost Averaging Program
                               Quantity Discounts                Automatic Investment Plan
                               Right of Accumulation             Systematic Withdrawal Plan
                               Reinstatement Privilege           Portfolio Rebalancing Program
  Class B Shares:              Reinstatement Privilege           Automatic Investment Plan
                               Systematic Withdrawal Plan        Dollar Cost Averaging Program
                               Portfolio Rebalancing Program
</TABLE>
 
                               Prospectus Page 4
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
 
                               PROSPECTUS SUMMARY
                                  (Continued)
- --------------------------------------------------------------------------------
 
SUMMARY OF INVESTOR COSTS. The expenses and maximum transactions costs
associated with investing in the Class A and Class B shares of the Fund are
reflected in the following tables (1).
 
<TABLE>
<CAPTION>
                                                                                                         CLASS A      CLASS B
                                                                                                       -----------  -----------
<S>                                                                                                    <C>          <C>
SHAREHOLDER TRANSACTION COSTS (2):
  Maximum sales charge on purchases of shares (as a % of offering price).............................       4.75%         None
  Sales charges on reinvested distributions to shareholders..........................................        None         None
  Maximum deferred sales charge (as a % of net asset value at time of purchase or sale, whichever is
    less)............................................................................................        None         5.0%
  Redemption charges (3).............................................................................        2.0%         None
  Exchange Fees:
    -- On first four exchanges each year.............................................................        None         None
    -- On each additional exchange...................................................................        $7.50       $7.50
ANNUAL FUND OPERATING EXPENSES (4):
  (AS A % OF AVERAGE NET ASSETS)
  Investment management and administration fees......................................................       0.98%        0.98%
  12b-1 distribution and service fees................................................................       0.50%        1.00%
  Other expenses.....................................................................................       0.62%        0.62%
                                                                                                       -----------  -----------
Total Fund Operating Expenses (7)....................................................................        2.0%        2.50%
                                                                                                       -----------  -----------
                                                                                                       -----------  -----------
</TABLE>
 
HYPOTHETICAL EXAMPLE OF EFFECT OF EXPENSES:
 
An investor would have directly or indirectly paid the following expenses at the
end of the periods shown on a $1,000 investment in the Fund, assuming a 5%
annual return:
 
<TABLE>
<CAPTION>
                                                                                            ONE    THREE   FIVE     TEN
                                                                                            YEAR   YEARS   YEARS   YEARS
                                                                                            ----   -----   -----   -----
<S>                                                                                         <C>    <C>     <C>     <C>
Class A Shares (5)........................................................................  $      $       $       $
Class B Shares:
    Assuming a complete redemption at end of period (6)...................................  $      $       $       $
    Assuming no redemption................................................................  $      $       $       $
</TABLE>
 
- ------------------
(1) THESE TABLES ARE INTENDED TO ASSIST INVESTORS IN UNDERSTANDING THE VARIOUS
    COSTS AND EXPENSES ASSOCIATED WITH INVESTING IN THE FUND. Long-term
    shareholders may pay more than the economic equivalent of the maximum
    front-end sales charges permitted by NASD rules regarding investment
    companies. THE "HYPOTHETICAL EXAMPLE" IS NOT A REPRESENTATION OF PAST OR
    FUTURE EXPENSES. THE FUND'S ACTUAL EXPENSES MAY BE MORE OR LESS THAN THOSE
    SHOWN. The tables and the assumption in the 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
    projected or actual performance.
 
(2) Sales charge waivers are available for Class A and Class B shares, and
    reduced sales charge purchase plans 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 generally
    declines by 1% annually thereafter, reaching zero after six years. See "How
    to Invest."
 
(3) The Fund will deduct a 2% redemption fee from the proceeds of all
    redemptions of Class A shares acquired as a result of the reorganization of
    G.T. Global Developing Markets Fund, Inc. into the Fund. The redemption fee
    will be imposed on all such redemptions until             , 1998. See "How
    to Redeem." [THE REDEMPTION FEE WILL NOT BE IMPOSED ON CLASS A SHARES
    PURCHASED AFTER NOVEMBER 1, 1997.]
 
(4) Expenses are based on the Fund's fiscal year ended October 31, 1996,
    restated to reflect the Fund's current fees. "Other expenses" include
    custody, transfer agent, legal and audit fees and other operating expenses.
    See "Management" herein and in the Statement of Additional Information for
    more information. The Fund also offers Advisor Class shares to certain
    categories of investors. See "Alternative Purchase Plan." Advisor Class
    shares are not subject to 12b-1 distribution and service fees.
 
(5) Assumes payment of maximum sales charge by the investor.
 
(6) Assumes payment of the applicable contingent deferred sales charge.
 
(7) The Manager and GT Global have voluntarily undertaken to limit the Fund's
    expenses (exclusive of brokerage commissions, taxes, interest and
    extraordinary expenses) to the annual rate of 2.0% and 2.5% of the average
    daily net assets of the Fund's Class A and Class B shares, respectively.
 
                               Prospectus Page 5
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
 
                              FINANCIAL HIGHLIGHTS
 
- --------------------------------------------------------------------------------
 
The table below provides condensed financial information concerning income and
capital changes for one share of G.T. Global Developing Markets Fund, Inc. (the
Fund's predecessor) for the periods shown. This information is supplemented by
the financial statements and accompanying notes appearing in the Statement of
Additional Information. The financial information in the table below has been
audited by Coopers & Lybrand L.L.P., independent accountants. Prior to        ,
1997, G.T. Global Developing Markets Fund, Inc. was a closed-end registered
investment company whose single class of shares traded on the New York Stock
Exchange ("NYSE"). On        , 1997, the Fund, which had no previous operating
history, acquired the assets and assumed the liabilities of G.T. Global
Developing Markets Fund, Inc. On that date, all shareholders of G.T. Global
Developing Markets Fund, Inc. received Class A shares of the Fund.
 
                       GT GLOBAL DEVELOPING MARKETS FUND
            (SUCCESSOR TO G.T. GLOBAL DEVELOPING MARKETS FUND, INC.)
   (For the entire period shown, the Fund operated as a closed-end investment
                          company traded on the NYSE.)
 
<TABLE>
<CAPTION>
                                                               SIX MONTHS         YEAR ENDED        JANUARY 11, 1994
                                                                  ENDED          DECEMBER 31,        (COMMENCEMENT
                                                              JUNE 30, 1997  --------------------  OF OPERATIONS) TO
                                                               (UNAUDITED)     1996       1995     DECEMBER 31, 1994
                                                              -------------  ---------  ---------  ------------------
<S>                                                           <C>            <C>        <C>        <C>
Per Share Operating Performance:
Net asset value, beginning of period........................                 $   11.60  $   12.44      $    15.00
                                                                             ---------  ---------      ----------
Income from investment operations:
  Net investment income.....................................                      0.53       0.72            0.35
  Net realized and unrealized gain (loss) on investments....                      2.19      (0.84)          (2.46)
                                                                             ---------  ---------      ----------
    Net increase (decrease) from investment operations......                      2.72      (0.12)          (2.11)
                                                                             ---------  ---------      ----------
Distributions to shareholders:
  From net investment income................................                     (0.48)     (0.72)          (0.35)
  From net realized gain on investments.....................                        --         --           (0.10)
                                                                             ---------  ---------      ----------
    Total distributions.....................................                     (0.48)     (0.72)          (0.45)
                                                                             ---------  ---------      ----------
Net asset value, end of period..............................                 $   13.84  $   11.60      $    12.44
                                                                             ---------  ---------      ----------
                                                                             ---------  ---------      ----------
Market value, end of period.................................                 $   11.63  $    9.75      $     9.75
                                                                             ---------  ---------      ----------
                                                                             ---------  ---------      ----------
Total investment return (based on market value).............                     24.18%      6.60%         (32.16)%+
 
Ratios and supplemental data:
Net assets, end of period (in 000's)........................                 $ 504,012  $ 422,348      $  452,872
  Ratio of net investment income to average net assets......                      4.07%      6.33%          2.75%++
Ratio of expenses to average net assets:
  With expense reductions...................................                      1.82%      1.77%          2.01%++
  Without expense reductions................................                      1.85%      1.80%          2.01%++
Portfolio turnover rate.....................................                       138%        75%            56%
Average commission rate per share paid on portfolio
 transactions...............................................                 $  0.0022        N/A             N/A
<FN>
- ------------------
</TABLE>
 
+   Not annualized
 
++  Annualized
 
N/A Not Applicable
 
                               Prospectus Page 6
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
 
                           ALTERNATIVE PURCHASE PLAN
 
- --------------------------------------------------------------------------------
 
DIFFERENCES BETWEEN THE CLASSES. The primary difference between the two classes
of the Fund's shares offered through this Prospectus lies in their sales charge
structures and ongoing expenses, as summarized below. Class A and Class B shares
represent the same interests in the Fund and have the same rights, except that
each class bears the separate expenses of its Rule 12b-1 distribution plan and
has exclusive voting rights with respect to such plan, and each class has a
separate exchange privilege. See "Management" and "How to Make Exchanges." Each
class has distinct advantages and disadvantages for different investors, and
investors should choose the class that better suits their circumstances and
objectives.
 
CLASS A SHARES. Class A shares are sold at net asset value plus an initial sales
charge of up to 4.75% of the public offering price imposed at the time of
purchase. This initial sales charge is reduced or waived for certain purchases.
Purchases of $500,000 or more must be for Class A shares. Class A shares of the
Fund bear annual service and distribution fees of up to 0.50% of the average
daily net assets of that class.
 
CLASS B SHARES. Class B shares are sold at net asset value with no initial sales
charge at the time of purchase. Therefore, the entire amount of an investor's
purchase payment is invested in the Fund. Class B shares bear annual service and
distribution fees of up to 1.00% of the average daily net assets of that class,
and Class B shareholders pay a contingent deferred sales charge of up to 5% of
the lesser of the original purchase price or the net asset value of such shares
at the time of redemption. The higher service and distribution fees paid by the
Class B shares should cause that class to have a higher expense ratio and to pay
lower dividends per share than Class A shares.
 
FACTORS TO CONSIDER IN CHOOSING A CLASS OF SHARES. In deciding which class of
shares to purchase, investors should consider the foregoing factors as well as
the following:
 
INTENDED HOLDING PERIOD. Over time, the cumulative expense of the 1.00% annual
service and distribution fees on the Class B shares will approximate or exceed
the expense of the applicable 4.75% maximum initial sales charge plus the 0.50%
service and distribution fees on the Class A shares. For example, if net asset
value remains constant, the Class B shares' aggregate service and distribution
fees would be equal to the Class A shares' initial maximum sales charge and
service and distribution fees approximately nine years after purchase.
Thereafter, Class B shares would experience higher cumulative expenses.
Investors who expect to maintain their investment in the Fund over the long-term
but do not qualify for a reduced initial sales charge might elect the Class A
initial sales charge alternative because the indirect expense to the shareholder
of the accumulated service and distribution fees on the Class B shares
eventually will exceed the initial sales charge paid by the shareholder plus the
indirect expense to the shareholder of the accumulated distribution fees of
Class A shares. Class B investors, however, enjoy the benefit of permitting all
their dollars to work from the time the investments are made. Any positive
investment return on this additional invested amount would partially or wholly
offset the higher annual expenses borne by Class B shares. Because the Fund's
future returns cannot be predicted, however, there can be no assurance that such
a positive return will be achieved.
 
Finally, Class B shareholders pay a contingent deferred sales charge if they
redeem during the first six years after purchase, unless a sales charge waiver
applies. Investors expecting to redeem during this period should consider the
cost of the applicable contingent deferred sales charge in addition to the
annual Class B service and distribution fees, as compared with the cost of the
applicable initial sales charge and the annual service and distribution fees
applicable to the Class A shares.
 
REDUCED SALES CHARGES. Class A share purchases of $50,000 or more and Class A
share purchases made under the Fund's reduced sales charge plans may be made at
a reduced initial sales charge. See "How to Invest" for a complete list of
reduced sales charges applicable to Class A purchases.
 
WAIVER OF SALES CHARGES. The entire initial sales charge on Class A shares is
waived for certain eligible purchasers, and these purchasers' entire purchase
price would be immediately invested in the Fund.
 
                               Prospectus Page 7
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
Investors eligible for complete initial sales charge waivers should purchase
Class A shares. The contingent deferred sales charge is waived for certain
redemptions of Class B shares. A 1% contingent deferred sales charge is imposed
on certain redemptions of Class A shares on which no initial sales charge was
assessed.
 
Investors should understand that the contingent deferred sales charge on the
Class B shares and the initial sales charge on the Class A shares are both
intended to compensate GT Global and selling broker/dealers for their
distribution services. Broker/dealers may receive different levels of
compensation for selling a particular class of shares.
 
See "How to Invest," "How to Redeem Shares," and "Management" for a more
complete description of the initial and contingent deferred sales charges,
service fees and distribution fees for Class A and Class B shares and
"Dividends, Other Distributions and Federal Income Taxation" and "Calculation of
Net Asset Value" for other differences between these two classes.
 
ADVISOR CLASS SHARES. Advisor Class shares are offered through a separate
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 such account, and (ii) the account holder pays
such person as compensation for its advice and other services an annual fee of
at least .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 .50% on the assets in the account; (d) accounts advised by one of the
companies composing or affiliated with Liechtenstein Global Trust; and (e) any
of the companies composing or affiliated with Liechtenstein Global Trust.
 
- --------------------------------------------------------------------------------
 
                             INVESTMENT OBJECTIVES
                                  AND POLICIES
 
- --------------------------------------------------------------------------------
 
The Fund's primary investment objective is long-term capital appreciation; its
secondary objective is income, to the extent consistent with seeking capital
appreciation. The Fund normally invests substantially all of its assets in
issuers in the developing (or "emerging") markets of Asia, Europe, Latin America
and elsewhere. A majority of the Fund's assets ordinarily are invested in
emerging market equity securities. The Fund may invest in the following types of
equity securities: common stock, preferred stock, securities convertible into
common stock, American Depository Receipts ("ADRs"), Global Depository Receipts
("GDRs"), rights and warrants to acquire such securities and substantially
similar forms of equity with comparable risk characteristics. The Fund may also
invest in emerging market debt securities that will be selected based on their
potential to provide a combination of capital appreciation and current income.
 
For purposes of the Fund's operations, emerging markets consist of all countries
determined by the Manager to have developing or emerging economies and markets.
These countries generally include every country in the world except the United
States, Canada, Japan, Australia, New Zealand and most countries located in
Western Europe. See "Investment Objectives and Policies" in the Statement of
Additional Information for a complete list of all the countries that the Fund
does not currently consider to be emerging markets.
 
For purposes of the Fund's policy of normally investing substantially all of its
assets in issuers in
 
                               Prospectus Page 8
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
emerging markets, the Fund will consider investment in the following emerging
markets:
 
<TABLE>
<S>               <C>            <C>
  Algeria         Hong Kong      Peru
  Argentina       Hungary        Philippines
  Bolivia         India          Poland
  Botswana        Indonesia      Portugal
  Brazil          Israel         Republic of
  Bulgaria        Ivory Coast    Slovakia
  Chile           Jamaica        Russia
  China           Jordan         Singapore
  Colombia        Kazakhstan     Slovenia
  Costa Rica      Kenya          South Africa
  Cyprus          Lebanon        South Korea
  Czech           Malaysia       Sri Lanka
   Republic       Mauritius      Swaziland
  Dominican       Mexico         Taiwan
   Republic       Morocco        Thailand
  Ecuador         Nicaragua      Turkey
  Egypt           Nigeria        Ukraine
  El Salvador     Oman           Uruguay
  Finland         Pakistan       Venezuela
  Ghana           Panama         Zambia
  Greece          Paraguay       Zimbabwe
</TABLE>
 
Although the Fund considers each of the above-listed countries eligible for
investment, it will not be invested in all such markets at all times. Moreover,
investing in some of those markets currently may not be desirable or feasible,
due to the lack of adequate custody arrangements for the Fund's assets, overly
burdensome repatriation and similar restrictions, the lack of organized and
liquid securities markets, unacceptable political risks or for other reasons.
 
As used in this Prospectus, an issuer in an emerging market is an entity, (i)
for which the principal securities trading market is an emerging market, as
defined above, (ii) that (alone or on a consolidated basis) derives 50% or more
of its total revenues from business in emerging markets, provided that, in the
Manager's view, the value of such issuer's securities will tend to reflect
emerging market developments to a greater extent than developments elsewhere, or
(iii) organized under the laws of, or with a principal office in, an emerging
market.
 
The Fund invests in those emerging markets that the Manager believes have
strongly developing economies and in which the markets are becoming more
sophisticated. In selecting investments, the Manager seeks to identify those
countries and industries where economic and political factors, including
currency movements, are likely to produce above-average growth rates. The
Manager then invests in those companies in such countries and industries that it
believes are best positioned and managed to take advantage of these economic and
political factors. The Manager believes that the issuers of securities in
emerging markets often have sales and earnings growth rates that exceed those in
developed countries and that such growth rates may in turn be reflected in more
rapid share price appreciation.
 
As opportunities to invest in securities in other emerging markets develop, the
Fund expects to expand and further broaden the group of emerging markets in
which it invests. In some cases, investments in debt securities could provide
the Fund with access to emerging markets in the early stages of their economic
development, when equity securities are not yet generally available or, in the
Manager's view, do not yet present an acceptable investment alternative. While
the Fund generally is not restricted in the portion of its assets that may be
invested in a single region, under normal conditions its assets will be invested
in issuers in at least four countries, and it will not invest more than 25% of
its assets in issuers in one country. The Fund's holdings of any one foreign
currency together with securities denominated in or indexed to such currency
will not exceed 40% of the Fund's assets.
 
INVESTMENTS IN DEBT SECURITIES. The Fund may invest up to 50% of its total
assets in the following types of emerging market debt securities: (1) debt
securities issued or guaranteed by governments, their agencies,
instrumentalities or political subdivisions, or by government owned, controlled
or sponsored entities, including central banks (collectively, "Sovereign Debt"),
including Brady Bonds; (2) interests in issuers organized and operated for the
purpose of restructuring the investment characteristics of Sovereign Debt; (3)
debt securities issued by banks and other business entities; and (iv) debt
securities denominated in or indexed to the currencies of emerging markets. Debt
securities held by the Fund may take the form of bonds, notes, bills,
debentures, bank debt obligations, short-term paper, loan participations,
assignments and interests issued by entities organized and operated for the
purpose of restructuring the investment characteristics of any of the foregoing.
There is no requirement with respect to the maturity or duration of debt
securities in which the Fund may invest.
 
There is no limitation on the percentage of the Fund's assets that may be
invested in debt securities that are rated below investment grade. Investment in
below investment grade debt securities involves a high degree of risk and can be
speculative. These
 
                               Prospectus Page 9
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
debt securities are the equivalent of high yield, high risk bonds, commonly
known as "junk bonds." Most debt securities in which the Fund will invest are
not rated; if rated, it is expected that such ratings will be below investment
grade. See "Risk Factors -- Risks Associated with Debt Securities" and "--Risks
Associated with Below Investment Grade Debt Securities."
 
The Fund may invest in "Brady Bonds," which are debt restructurings that provide
for the exchange of cash and loans for newly issued bonds. Brady Bonds have been
issued by the countries of, among others, Albania, Argentina, Brazil, Bulgaria,
Costa Rica, Dominican Republic, Ecuador, Ivory Coast, Jordan, Mexico, Nigeria,
Philippines, Poland, Russia, Uruguay, Venezuela and Vietnam, and are expected to
be issued by other emerging market countries. As of the date of this Prospectus,
the Fund is not aware of the occurrence of any payment defaults on Brady Bonds.
Investors should recognize, however, that Brady Bonds have been issued only
recently and, accordingly, do not have a long payment history. In addition,
Brady Bonds are often rated below investment grade.
 
The Fund may invest in either collateralized or uncollateralized Brady Bonds.
U.S. dollar-denominated collateralized Brady Bonds, which may be fixed rate par
bonds or floating rate discount bonds, are collateralized in full as to
principal by U.S. Treasury zero coupon bonds having the same maturity as the
bonds. Interest payments on such bonds generally are collateralized by cash or
securities in an amount that, in the case of fixed rate bonds, is equal to at
least one year of rolling interest payments or, in the case of floating rate
bonds, initially is equal to at least one year's rolling interest payments based
on the applicable interest rate at that time and is adjusted at regular
intervals thereafter.
 
Capital appreciation in debt securities may arise as a result of a favorable
change in relative foreign exchange rates, relative interest rate levels and/or
the creditworthiness of issuers.
 
ADDITIONAL INVESTMENT POLICIES
 
TEMPORARY DEFENSIVE STRATEGIES. In the interest of preserving shareholders'
capital, the Manager may employ a temporary defensive investment strategy for
the Fund if it determines such a strategy to be warranted due to market,
economic or political conditions. Under a defensive strategy, the Fund may hold
cash (U.S. dollars, foreign currencies or multinational currency units) and/or
invest any portion or all of its assets in high quality money market instruments
of U.S. or foreign issuers. In addition, for temporary defensive purposes, most
or all of the Fund's investments may be made in the United States and
denominated in U.S. dollars. To the extent the Fund adopts a temporary defensive
posture, it will not be invested so as to directly achieve its investment
objectives. In addition, pending investment of proceeds from new sales of Fund
shares or in order to meet ordinary daily cash needs, the Fund may hold cash
(U.S. dollars, foreign currencies or multinational currency units) and may
invest in foreign or domestic high quality money market instruments.
 
BORROWING AND REVERSE REPURCHASE AGREEMENTS. In connection with meeting requests
for the redemption of Fund shares, the Fund may borrow from banks or may borrow
through reverse repurchase agreements. The Fund also may borrow up to 5% of its
total assets for temporary or emergency purposes other than to meet redemptions,
but total borrowings may not exceed 33 1/3% of its total assets. However, the
Fund will not purchase securities while borrowings in excess of 5% of its total
assets are outstanding. Any borrowing by the Fund may cause greater fluctuation
in the value of its shares than would be the case if it did not borrow.
 
A reverse repurchase agreement is a borrowing transaction in which the Fund
transfers possession of a security to another party, such as a bank or
broker/dealer, in return for cash and agrees to repurchase the security in the
future at an agreed-upon price that includes an interest component.
 
SECURITIES LENDING. The Fund may lend its portfolio securities to broker/dealers
or to other institutional investors. Securities lending allows the Fund to
retain ownership of the securities loaned and, at the same time, earn additional
income that may be used to offset the Fund's custody fees. The Fund limits its
loans of portfolio securities to an aggregate of 30% of the value of its total
assets, measured at the time any such loan is made. While a loan is outstanding,
the borrower must maintain with the Fund's custodian collateral consisting of
cash, U.S. government securities or certain irrevocable letters of credit equal
to at least 100% of the value of the borrowed securities plus any accrued
interest or such other collateral as permitted by the Fund's investment program,
regulatory agencies and as approved by the Board. 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
 
                               Prospectus Page 10
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
rights in the collateral if the borrower fails financially.
 
OPTIONS, FUTURES AND FORWARD CURRENCY TRANSACTIONS. To attempt to increase
return, the Fund may write call options on securities. This strategy will be
employed only when, in the opinion of the Manager, the size of the premium the
Fund receives for writing the option is adequate to compensate it against the
risk that appreciation in the underlying security may not be fully realized if
the option is exercised. The Fund also is authorized to write put options to
attempt to enhance return, although it does not currently intend to do so.
 
The Fund may also use forward currency contracts, futures contracts, options on
securities, options on currencies, options on indices and options on futures
contracts to attempt to hedge against the overall level of investment and
currency risk normally associated with its investments. These instruments are
often referred to as "derivatives," which may be defined as financial
instruments whose performance is derived, at least in part, from the performance
of another asset (such as a security, currency or an index of securities). The
Fund may enter into such instruments up to the full value of its portfolio
assets. See "Options, Futures and Currency Strategies" in the Statement of
Additional Information.
 
To attempt to hedge against adverse movements in exchange rates between
currencies, the Fund may enter into forward currency contracts for the purchase
or sale of a specified currency at a specified future date. Such contracts may
involve the purchase or sale of a foreign currency against the U.S. dollar or
may involve two foreign currencies. The Fund may enter into forward currency
contracts either with respect to specific transactions or with respect to its
portfolio positions. The Fund also may purchase and sell put and call options on
currencies, futures contracts on currencies and options on such futures
contracts to hedge its portfolio against movements in exchange rates.
 
Only a limited market, if any, currently exists for options and futures
transactions relating to currencies of most emerging markets, to securities
denominated in such currencies or to securities of issuers domiciled or
principally engaged in business in such emerging markets. To the extent that
such a market does not exist, the Manager may not be able to effectively hedge
its investment in such markets.
 
In addition, the Fund may purchase and sell put and call options on equity and
debt securities to hedge against the risk of fluctuations in the prices of
securities held by the Fund or that the Manager intends to include in the Fund's
portfolio. The Fund also may purchase and sell put and call options on stock
indices to hedge against overall fluctuations in the securities markets or in a
specific market sector.
 
Further, the Fund may sell index futures contracts and may purchase put options
or write call options on such futures contracts to protect against a general
market or a specific market sector decline that could adversely affect the
Fund's portfolio. The Fund also may purchase index futures contracts and
purchase call options or write put options on such contracts to hedge against a
general market or market sector advance and thereby attempt to lessen the cost
of future securities acquisitions. Similarly, the Fund may use interest rate
futures contracts and options thereon to hedge the debt portion of its portfolio
against changes in the general level of interest rates.
 
INVESTMENT IN OTHER INVESTMENT COMPANIES OR VEHICLES. The Fund may be able to
invest in certain countries solely or primarily through governmentally
authorized investment vehicles or companies. Pursuant to the Investment Company
Act of 1940, as amended (the "1940 Act"), the Fund generally may invest up to
10% of its total assets in the aggregate in shares of other investment companies
and up to 5% of its total assets in any one investment company, as long as each
investment does not represent more than 3% of the outstanding voting stock of
the acquired investment company at the time of investment.
 
Investment in other investment companies may involve the payment of substantial
premiums above the value of their portfolio securities and multiple layering of
fees and expenses and is subject to limitations under the 1940 Act and market
availability. The Fund does not intend to invest in other investment companies
unless, in the judgment of the Manager, the potential benefits of such
investment justify the payment of any applicable premium or sales charge. As a
shareholder in another investment company, the Fund would bear its ratable share
of that company's expenses, including its advisory and administration fees. At
the same time the Fund would continue to pay its own management fees and other
expenses.
 
PRIVATIZATIONS. The governments in some emerging markets, including Latin
American countries, have
 
                               Prospectus Page 11
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
been engaged in programs of selling part or all of their stakes in government
owned or controlled enterprises ("privatizations"). The Manager believes that
privatizations may offer opportunities for significant capital appreciation and
intends to invest assets of the Fund in privatizations in appropriate
circumstances. In certain emerging markets, the ability of foreign entities such
as the Fund to participate in privatizations may be limited by local law or the
terms on which the Fund may be permitted to participate may be less advantageous
than those afforded local investors. There can be no assurance that governments
in emerging markets will continue to sell companies currently owned or
controlled by them or that privatization programs will be successful.
 
WHEN-ISSUED AND FORWARD COMMITMENT SECURITIES. The Fund may purchase debt
securities on a "when-issued" basis and may purchase or sell such securities on
a "forward commitment" basis in order to hedge against anticipated changes in
interest rates and prices. The price, which is generally expressed in yield
terms, is fixed at the time the commitment is made, but delivery and payment for
the securities take place at a later date. When-issued securities and forward
commitments may be sold prior to the settlement date, but the Fund will purchase
or sell when-issued securities and forward commitments only with the intention
of actually receiving or delivering the securities, as the case may be. No
income accrues on securities that have been purchased pursuant to a forward
commitment or on a when-issued basis prior to delivery to the Fund. If the Fund
disposes of the right to acquire a when-issued security prior to its acquisition
or disposes of its right to deliver or receive against a forward commitment, it
may incur a gain or loss. At the time the Fund enters into a transaction on a
when-issued or forward commitment basis, a segregated account consisting of cash
or liquid securities equal to the value of the when-issued or forward commitment
securities will be established and maintained with the Fund's custodian bank and
will be marked to market daily. There is a risk that the securities may not be
delivered and that the Fund may incur a loss.
 
LOAN PARTICIPATIONS AND ASSIGNMENTS. The Fund may invest in fixed and floating
rate loans ("Loans") arranged through private negotiations between a foreign
entity and one or more financial institutions ("Lenders"). The majority of the
Fund's investments in Loans in emerging markets is expected to be in the form of
participations in Loans ("Participations") and assignments of portions of Loans
from third parties ("Assignments"). Participations typically will result in the
Fund having a contractual relationship only with the Lender, not with the
borrower. The Fund will have the right to receive payments of principal,
interest and any fees to which it is entitled only from the Lender selling the
Participation and only upon receipt by the Lender of the payments from the
borrower. In connection with purchasing Participations, the Fund generally will
have no right to enforce compliance by the borrower with the terms of the loan
agreement relating to the loan, nor any rights of set-off against the borrower,
and the Fund may not directly benefit from any collateral supporting the Loan in
which it has purchased the Participation. As a result, the Fund will assume the
credit risk of both the borrower and the Lender that is selling the
Participation.
 
In the event of the insolvency of the Lender selling a Participation, the Fund
may be treated as a general creditor of the Lender and may not benefit from any
set-off between the Lender and the borrower. The Fund will acquire
Participations only if the Lender interpositioned between the Fund and the
borrower is determined by the Manager to be creditworthy. When the Fund
purchases Assignments from Lenders, the Fund will acquire direct rights against
the borrower on the Loan. However, because Assignments are arranged through
private negotiations between potential assignees and assignors, the rights and
obligations acquired by the Fund as the purchaser of an Assignment may differ
from, and be more limited than, those held by the assigning Lender.
 
ZERO COUPON SECURITIES. The Fund may invest in certain zero coupon securities
that are "stripped" U.S. Treasury notes and bonds. The Fund also may invest in
zero coupon and other deep discount securities issued by foreign governments and
domestic and foreign corporations, including certain Brady Bonds and other
foreign debt, and in payment-in-kind securities. Zero coupon securities pay no
interest to holders prior to maturity, and payment-in-kind securities pay
"interest" in the form of additional securities. However, a portion of the
original issue discount on zero coupon securities and the interest on
payment-in-kind securities will be included in the Fund's income. Accordingly,
for the Fund to continue to qualify for tax treatment as a regulated investment
company and to avoid a certain excise tax (see "Taxes" in the Statement of
Additional Information), it may be required to distribute an amount that is
greater than the total amount of cash it actually
 
                               Prospectus Page 12
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
receives. These distributions must be made from the Fund's cash assets or, if
necessary, from the proceeds of sales of portfolio securities. The Fund will not
be able to purchase additional income-producing securities with cash used to
make such distributions, and its current income ultimately may be reduced as a
result. Zero coupon and payment-in-kind securities usually trade at a deep
discount from their face or par value and will be subject to greater
fluctuations of market value in response to changing interest rates than debt
obligations of comparable maturities that make current distributions of interest
in cash.
 
INDEXED COMMERCIAL PAPER. The Fund may invest without limitation in commercial
paper that is indexed to certain specific foreign currency exchange rates. The
terms of such commercial paper provide that its principal amount is adjusted
upwards or downwards (but not below zero) at maturity to reflect changes in the
exchange rate between two currencies while the obligation is outstanding. The
Fund will purchase such commercial paper with the currency in which it is
denominated and, at maturity, will receive interest and principal payments
thereon in that currency, but the amount of principal payable by the issuer at
maturity will change in proportion to the change (if any) in the exchange rate
between the two specified currencies between the date the instrument is issued
and the date the instrument matures. While such commercial paper entails the
risk of loss of principal, the potential for realizing gains as a result of
changes in foreign currency exchange rates enables the Fund to hedge against a
decline in the U.S. dollar value of investments denominated in foreign
currencies while seeking to provide an attractive money market rate of return.
The Fund will not purchase such commercial paper for speculation.
 
OTHER INDEXED SECURITIES. The Fund may invest in certain other indexed
securities, which are securities whose prices are indexed to the prices of other
securities, securities indices, currencies, precious metals or other commodities
or other financial indicators. Indexed securities typically, but not always, are
debt securities or deposits whose value at maturity or coupon rate is determined
by reference to a specific instrument or statistic. The performance of indexed
securities depends to a great extent on the performance of the security,
currency or other instrument to which they are indexed and also may be
influenced by interest rate changes in the United States and abroad. At the same
time, indexed securities are subject to the credit risks associated with the
issuer of the security, and their values may decline substantially if the
issuer's creditworthiness deteriorates. Indexed securities may be more volatile
than the underlying instruments. New forms of indexed securities continue to be
developed. The Fund may invest in such securities to the extent consistent with
its investment objectives.
 
OTHER INFORMATION. The Fund's investment objectives may not be changed without
the approval of a majority of its outstanding voting securities. A "majority of
the Fund's outstanding voting securities" means the lesser of (i) 67% of the
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 that also may not be changed
without shareholder approval. A complete description of these limitations is
included 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 may be changed by a vote of a majority of the
Company's Board of Directors without shareholder approval. The Fund's policies
regarding lending, and the percentage of Fund assets that may be committed to
borrowing, are fundamental policies and may not be changed without shareholder
approval.
 
                               Prospectus Page 13
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
 
                                  RISK FACTORS
 
- --------------------------------------------------------------------------------
 
GENERAL. There is no assurance that the Fund will achieve its investment
objectives. The Fund's net asset value will fluctuate, reflecting fluctuations
in the market value of its portfolio positions. Equity securities, particularly
common stocks, generally represent the most junior position in an issuer's
capital structure and entitle holders to an interest in the assets of an issuer,
if any, remaining after all more senior claims have been satisfied.
 
Investing in the Fund entails a substantial degree of risk, and an investment in
the Fund should be considered speculative. Investors are strongly advised to
consider carefully the special risks involved in investing in emerging markets,
which are in addition to the usual risks of investing in developed markets
around the world.
 
NON-DIVERSIFIED CLASSIFICATION. The Fund is classified under the 1940 Act as a
"non-diversified" fund. As a result, the Fund will be able to invest in a
smaller number of issuers than if it was classified under the 1940 Act as a
"diversified" fund. To the extent that the Fund invests in a smaller number of
issuers, the net asset value of its shares may fluctuate more widely and it may
be subject to greater investment and credit risk with respect to its portfolio.
 
FOREIGN INVESTING. Investing in foreign securities entails certain risks. The
securities of non-U.S. issuers generally will not be registered with, nor the
issuers thereof be subject to the reporting requirements of the SEC.
Accordingly, there may be less publicly available information about foreign
securities and issuers than is available about domestic securities and issuers.
Foreign companies generally are not subject to uniform accounting, auditing and
financial reporting standards, practices and requirements comparable to those
applicable to domestic companies. In addition, certain costs attributable to
foreign investing, such as custody charges, are higher than those attributable
to domestic investing. Securities of some foreign companies are less liquid and
their prices may be more volatile than securities of comparable domestic
companies. The Fund's net investment income from foreign issuers may be subject
to non-U.S. withholding taxes, thereby reducing that income.
 
Investing in some foreign countries involves risks relating to potential
political and economic instability within such countries and the risks of
expropriation, nationalization, confiscation of assets and property or the
imposition of restrictions on foreign investment and on repatriation of capital
invested. In the event of such expropriation, nationalization or other
confiscation, the Fund could lose its entire investment in that market.
Moreover, individual foreign economies may differ favorably or unfavorably from
the U.S. economy in such respects as growth of gross national product, rate of
inflation, rate of savings and capital reinvestment, currency depreciation,
resource self-sufficiency and balance of payments positions. Investments in
foreign government securities involve special risks, including the risk that the
government issuers may be unable or unwilling to repay principal or interest
when due.
 
The Fund will also be affected favorably or unfavorably by exchange control
regulations or changes in the exchange rates between such currencies and the
U.S. dollar. Changes in currency exchange rates will affect the net asset value
of the Fund's shares and also may affect the value of dividends and interest
earned by the Fund and gains and losses realized by it.
 
INVESTING IN EMERGING MARKETS. Emerging markets generally are dependent heavily
upon international trade and, accordingly, have been and may continue to be
affected adversely by trade barriers, exchange controls, managed adjustments in
relative currency values and other protectionist measures imposed or negotiated
by the countries with which they trade. Inflation and rapid fluctuations in
inflation rates have had and may continue to have negative effects on the
economies and securities markets of certain countries with emerging markets.
 
Disclosure and regulatory standards in many respects are less stringent than in
the United States and other major markets. There also may be a lower level of
monitoring and regulation of emerging markets and the activities of investors in
such markets, and enforcement of existing regulations has been extremely
limited.
 
                               Prospectus Page 14
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
 
In addition, brokerage commissions, custodial services and other costs relating
to investment in foreign markets generally are more expensive than in the United
States, particularly with respect to emerging markets. Such markets have
different settlement and clearance procedures. In certain markets there have
been times when settlements have been unable to keep pace with the volume of
securities transactions, making it difficult to conduct such transactions. The
inability of the Fund to make intended securities purchases due to settlement
problems could cause it to miss attractive investment opportunities. Inability
to dispose of a portfolio security caused by settlement problems could result
either in losses to the Fund due to subsequent declines in value of the
portfolio security or, if the Fund has entered into a contract to sell the
security, could result in possible liability to the purchaser.
 
The securities markets of emerging countries are substantially smaller, less
developed, less liquid and more volatile than the securities markets of the
developed countries. The risk also exists that an emergency situation may arise
in one or more emerging markets as a result of which trading of securities may
cease or may be substantially curtailed and prices for the Fund's portfolio
securities in such markets may not be readily available. Section 22(e) of the
1940 Act permits a registered investment company, such as the Fund, to suspend
redemption of its shares for any period during which an emergency exists, as
determined by the SEC. Accordingly, when the Fund believes that circumstances
dictate, it will promptly apply to the SEC for a determination that such an
emergency exists. During the period commencing with the Fund's identification of
such conditions until the date of any SEC action, the Fund's portfolio
securities in the affected markets will be valued at fair value determined in
good faith by or under the direction of the Company's Board of Directors.
 
RISKS ASSOCIATED WITH DEBT SECURITIES. The value of the debt securities held by
the Fund generally will vary inversely with market interest rates. If interest
rates in a market fall, the Fund's debt securities issued by governments or
companies in that market ordinarily will increase in value. If market interest
rates increase, however, the debt securities owned by the Fund in that market
will likely decrease in value.
 
RISKS ASSOCIATED WITH BELOW INVESTMENT GRADE DEBT SECURITIES. The Fund normally
may invest up to 50% of its total assets in debt securities rated below
investment grade. Such investments involve a high degree of risk.
Debt rated Baa by Moody's Investors Service, Inc. ("Moody's") is considered by
Moody's to have speculative characteristics. Debt rated BB, B, CCC, CC or C by
Standard & Poor's Ratings Group ("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. 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 are also generally considered to be subject to greater risk than
securities with higher ratings with regard to a deterioration of general
economic conditions. These foreign 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 it,
 
                               Prospectus Page 15
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
such as its inability to meet specific projected business forecasts or the
unavailability of additional financing. Similarly, certain emerging market
governments that issue lower quality debt securities are among the largest
debtors to commercial banks, foreign governments and supranational organizations
such as the World Bank and may not be able or willing to make principal and/or
interest repayments as they come due. 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 frequently have call or buy-back features that
would permit an issuer to call or repurchase the security from the Fund. In
addition, the Fund 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 the Fund 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 Fund to obtain accurate market quotations for purposes of
valuing its portfolio. The Fund may also acquire lower quality debt securities
during an initial underwriting or that 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 Fund 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.
 
The Fund 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 its portfolio
holdings, and the Fund may have limited legal recourse in the event of a
default. Debt securities issued by governments in emerging markets can differ
from debt obligations issued by private entities in that remedies from defaults
generally must be pursued in the courts of the defaulting government, and legal
recourse is therefore somewhat diminished. Political conditions, in terms of a
government's willingness to meet the terms of its debt obligations, also are of
considerable significance. There can be no assurance that the holders of
commercial bank debt may not contest payments to the holders of debt securities
issued by governments in emerging markets in the event of default by the
governments under commercial bank loan agreements.
 
ILLIQUID SECURITIES. The Fund may invest up to 15% of its net assets 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 restricted securities often sell
at a price lower than similar securities that are not subject to restrictions on
resale.
 
CURRENCY RISK. Because the Fund may invest substantially in securities
denominated in currencies other than the U.S. dollar, and since the Fund may
hold foreign currencies, it will be affected favorably or unfavorably by
exchange control regulations or changes in the exchange rates between such
currencies and the U.S. dollar. Changes in currency exchange rates will affect
the net asset value of the Fund's shares and also may affect the value of
dividends and interest earned by the Fund and gains and losses realized by it.
Currencies generally are evaluated on the basis of fundamental economic criteria
(e.g., relative inflation and interest rate levels and trends, growth rate
forecasts, balance of payments status and economic policies) as well as
technical and political data. Exchange rates are determined by the forces of
supply and demand in the foreign exchange markets. These forces are affected by
the international balance of payments and other economic and financial
conditions, government intervention, speculation and other factors. If the
currency in which a security is denominated appreciates against the U.S. dollar,
the dollar value of the security will increase. Conversely, a decline in the
exchange rate of the currency would adversely affect the value of the security
expressed in dollars.
 
Many of the currencies of emerging market countries have experienced steady
devaluations relative to the U.S. dollar, and major devaluations have
historically occurred in certain countries. Any devaluations in the currencies
in which the Fund's portfolio securities are denominated may have a detrimental
impact on the Fund.
 
                               Prospectus Page 16
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
 
Some countries also may have fixed currencies whose values against the U.S.
dollar are not independently determined. In addition, there is a risk that
certain countries may restrict the free conversion of their currencies into
other currencies. Further, certain currencies may not be internationally traded.
 
OPTIONS, FUTURES AND FOREIGN CURRENCY TRANSACTIONS. The Fund is authorized to
enter into options, futures and forward currency transactions. These
transactions involve certain risks, which include: (1) dependence on the
Manager's ability to predict movements in the prices of individual securities,
fluctuations in the general securities markets and movements in interest rates
and currency markets; (2) imperfect correlation, or even no correlation, between
movements in the price of forward contracts, options, 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 the 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 the 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 the Fund to sell a security at a disadvantageous time, due to the need for
the Fund to maintain "cover" or to set aside securities in connection with
hedging transactions.
 
LOAN PARTICIPATIONS AND ASSIGNMENTS. The Fund may have difficulty disposing of
Assignments and Participations. The liquidity of such securities is limited, and
the Fund anticipates that such securities could be sold only to a limited number
of institutional investors. The lack of a liquid secondary market could have an
adverse impact on the value of such securities and on the Fund's ability to
dispose of particular Assignments or Participations when necessary to meet its
liquidity needs or in response to a specific economic event, such as a
deterioration in the creditworthiness of the borrower. The lack of a liquid
secondary market for Assignments and Participations also may make it more
difficult for the Fund to assign a value to those securities for purposes of
valuing its portfolio and calculating its net asset value.
 
SOVEREIGN DEBT. The Fund may invest in sovereign debt securities of emerging
market governments, including Brady Bonds. Investments in such securities
involve special risks. The issuer of the debt or the governmental authorities
that control the repayment of the debt may be unable or unwilling to repay
principal or interest when due in accordance with the terms of such debt.
Periods of economic uncertainty may result in the volatility of market prices of
sovereign debt obligations and in turn the Fund's net asset value, to a greater
extent than the volatility inherent in domestic fixed income securities.
 
A sovereign debtor's willingness or ability to repay principal and pay interest
in a timely manner may be affected by, among other factors, its cash flow
situation, the extent of its foreign reserves, the availability of sufficient
foreign exchange on the date a payment is due, the relative size of the debt
service burden to the economy as a whole, the sovereign debtor's policy toward
principal international lenders and the political constraints to which a
sovereign debtor may be subject. Emerging market governments could default on
their sovereign debt. Such sovereign debtors also may be dependent on expected
disbursements from foreign governments, multilateral agencies and other entities
abroad to reduce principal and interest arrearages on their debt. The commitment
on the part of these governments, agencies and others to make such disbursements
may be conditioned on a sovereign debtor's implementation of economic reforms
and/or economic performance and the timely service of such debtor's obligations.
Failure to implement such reforms, achieve such levels of economic performance
or repay principal or interest when due may result in the cancellation of such
third parties' commitments to lend funds to the sovereign debtor, which may
further impair such debtor's ability or willingness to timely service its debts.
 
The occurrence of political, social or diplomatic changes in one or more of the
countries issuing sovereign debt could adversely affect the Fund's investments.
Emerging markets are faced with social and political issues, and some of them
have experienced high rates of inflation in recent years and have extensive
internal debt. Among other effects, high inflation and internal debt service
requirements may adversely affect the cost and availability of future domestic
sovereign borrowing to finance governmental programs and may have other adverse
social, political and economic consequences. Political changes or a
deterioration of a country's
 
                               Prospectus Page 17
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
domestic economy or balance of trade may affect its willingness to service its
sovereign debt. Although the Manager intends to manage the Fund in a manner that
will minimize the exposure to such risks, there can be no assurance that adverse
political changes will not cause the Fund to suffer a loss of interest or
principal on any of its holdings.
 
In recent years, some of the emerging market countries in which the Fund expects
to invest have encountered difficulties in servicing their sovereign debt
obligations. Some of these countries have withheld payments of interest and/or
principal of sovereign debt. These difficulties have also led to agreements to
restructure external debt obligations -- in particular, commercial bank loans --
typically by rescheduling principal payments, reducing interest rates and
extending new credits to finance interest payments on existing debt. In the
future, holders of emerging market sovereign debt securities may be requested to
participate in similar rescheduling of such debt. Certain emerging market
countries are among the largest debtors to commercial banks and foreign
governments. Currently, Brazil, Mexico and Argentina are the largest debtors
among developing countries. At times certain emerging market countries have
declared moratoria on the payment of principal and interest on external debt;
such a moratorium is currently in effect in certain emerging market countries.
There is no bankruptcy proceeding by which a creditor may collect in whole or in
part sovereign debt on which an emerging market government has defaulted.
 
The ability of emerging market governments to make timely payments on their
sovereign debt securities is likely to be influenced strongly by a country's
balance of trade and its access to trade and other international credits. A
country whose exports are concentrated in a few commodities could be vulnerable
to a decline in the international prices of one or more of such commodities.
Increased protectionism on the part of a country's trading partners could also
adversely affect its exports. Such events could diminish a country's trade
account surplus, if any. To the extent that a country receives payment for its
exports in currencies other than hard currencies, its ability to make hard
currency payments could be affected.
 
Investors should also be aware that certain sovereign debt instruments in which
the Fund may invest involve great risk. As noted above, sovereign debt
obligations issued by emerging market governments generally are deemed to be the
equivalent in terms of quality to securities rated below investment grade by
Moody's and S&P. Such securities are regarded as predominantly speculative with
respect to the issuer's capacity to pay interest and repay principal in
accordance with the terms of the obligations and involve major risk exposure to
adverse conditions. Some of such securities, with respect to which the issuer
currently may not be paying interest or may be in payment default, may be
comparable to securities rated D by S&P or C by Moody's. The Fund may have
difficulty disposing of and valuing certain sovereign debt obligations because
there may be a limited trading market for such securities. Because there is no
liquid secondary market for many of these securities, the Fund anticipates that
such securities could be sold only to a limited number of dealers or
institutional investors.
 
                               Prospectus Page 18
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
 
                                 HOW TO INVEST
 
- --------------------------------------------------------------------------------
 
GENERAL. All purchase orders will be executed at the public offering price next
determined after the purchase order is received, which includes any applicable
sales charge for Class A shares. Orders received before the close of regular
trading on the NYSE (currently 4:00 P.M. Eastern time, unless weather, equipment
failure or other factors contribute to an earlier closing time) on any Business
Day will be executed at the public offering price for the applicable class of
shares determined that day. A "Business Day" is any day Monday through Friday on
which the NYSE is open for business. The minimum initial investment is $500
($100 for IRAs and $25 for custodial accounts under Section 403(b)(7) of the
Internal Revenue Code of 1986, as amended ("Code"), and other tax-qualified
employer-sponsored retirement accounts, if made by such investors under a
systematic investment plan providing for monthly or quarterly payments of at
least that amount), and the minimum for additional purchases is $100 (with a $25
minimum for IRAs, Code Section 403(b)(7) custodial accounts and other
tax-qualified employer-sponsored retirement accounts, as mentioned above). THE
FUND AND GT GLOBAL RESERVE THE RIGHT TO REJECT ANY PURCHASE ORDER AND TO SUSPEND
THE OFFERING OF SHARES FOR A PERIOD OF TIME. In particular, the Fund and GT
Global may reject purchase orders or exchanges by investors who appear to
follow, in the Manager's judgment, a market-timing strategy or otherwise engage
in excessive trading. See "How to Make Exchanges -- Limitations on Purchase
Orders and Exchanges."
 
WHEN PLACING PURCHASE ORDERS, INVESTORS SHOULD SPECIFY WHETHER THE ORDER IS FOR
CLASS A OR CLASS B SHARES OF THE FUND. ALL PURCHASE ORDERS THAT FAIL TO SPECIFY
A CLASS WILL AUTOMATICALLY BE INVESTED IN CLASS A SHARES. PURCHASES OF $500,000
OR MORE MUST BE FOR CLASS A SHARES.
 
PURCHASES THROUGH BROKER/DEALERS. Shares of the Fund may be purchased through
broker/dealers with which GT Global has entered into dealer agreements. Orders
received by such broker/dealers before the close of regular trading on the NYSE
on a Business Day will be effected that day, provided that such order is
transmitted to the Transfer Agent prior to its close of business on such day.
The broker/dealer will be responsible for forwarding the investor's order to the
Transfer Agent so that it will be received prior to such time. After an initial
investment is made and a shareholder account is established through a
broker/dealer, at the investor's option, subsequent purchases may be made
directly through GT Global. See "Shareholder Account Manual."
 
Broker/dealers that do not have dealer agreements with GT Global also may offer
to place orders for the purchase of shares. Purchases made through such
broker/dealers will be effected at the public offering price next determined
after the order is received by the Transfer Agent. Such a broker/ dealer may
charge the investor a transaction fee as determined by the broker/dealer. That
fee will be in addition to the sales charge payable by the investor with respect
to Class A shares, and may be avoided if shares are purchased through a broker/
dealer that has a dealer agreement with GT Global or directly through GT Global.
 
PURCHASES THROUGH THE DISTRIBUTOR. Investors may purchase shares and open an
account directly through GT Global, the Fund's distributor, by completing and
signing an Account Application accompanying this Prospectus. Investors should
mail to the Transfer Agent the completed Application together with a check to
cover the purchase in accordance with the instructions provided in the
Shareholder Account Manual. Purchases will be executed at the public offering
price next determined after the Transfer Agent has received the Account
Application and check. Subsequent investments do not need to be accompanied by
an application.
 
Investors also may purchase shares of the Fund through GT Global by bank wire.
Bank wire purchases will be effected at the next determined public offering
price after the bank wire is received. A wire investment is considered received
when the Transfer Agent is notified that the bank wire has been credited to the
Fund. The investor is responsible for providing prior telephonic or facsimile
notice to the Transfer Agent that a bank wire is being sent. An investor's bank
may charge a service fee for wiring money to the Fund. The Transfer Agent
currently does not charge a service fee for
 
                               Prospectus Page 19
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
facilitating wire purchases, but reserves the right to do so in the future.
Investors desiring to open an account by bank wire should call the Transfer
Agent at the appropriate toll-free number provided in the Shareholder Account
Manual to obtain an account number and detailed instructions.
 
CERTIFICATES. Physical certificates representing the Fund's shares will not be
issued unless a written request is submitted to the Transfer Agent. Shares of
the Fund are recorded on a register by the Transfer Agent, and shareholders who
do not elect to receive certificates have the same rights of ownership as if
certificates had been issued to them. Redemptions and exchanges by shareholders
who hold certificates may take longer to effect than similar transactions
involving non-certificated shares because the physical delivery and processing
of properly executed certificates is required. ACCORDINGLY, THE FUND AND GT
GLOBAL RECOMMEND THAT SHAREHOLDERS DO NOT REQUEST ISSUANCE OF CERTIFICATES.
 
                           PURCHASING CLASS A SHARES
 
The Fund's public offering price for Class A shares is the next determined net
asset value per share (see "Calculation of Net Asset Value") including any sales
charge determined in accordance with the following schedule:
 
<TABLE>
<CAPTION>
                  SALES CHARGE AS PERCENTAGE OF         DEALER
AMOUNT OF                                           REALLOWANCE AS
PURCHASE          ------------------------------     PERCENTAGE OF
AT THE PUBLIC       OFFERING           NET           THE OFFERING
OFFERING PRICE        PRICE        INVESTMENT            PRICE
- ----------------  -------------  ---------------  -------------------
<S>               <C>            <C>              <C>
Less than
  $50,000.......          4.75%           4.99%              4.25%
$50,000 but less
  than
  $100,000......          4.00%           4.17%              3.50%
$100,000 but
  less than
  $250,000......          3.00%           3.09%              2.75%
$250,000 but
  less than
  $500,000......          2.00%           2.04%              1.75%
$500,000 or
  more..........          0.00%           0.00%            *
</TABLE>
 
- ------------------
*   GT Global will pay the following commissions to broker/ dealers that
    initiate and are responsible for purchases by any single purchaser of Class
    A shares of $500,000 or more in the aggregate: 1.00% of the purchase amount
    up to $3 million, plus 0.50% on the excess over $3 million. For purposes of
    determining the appropriate commission to be paid in connection with the
    transaction, GT Global will combine purchases made by a broker/dealer on
    behalf of a single client so that the broker/dealer's commission, as
    outlined above, will be based on the aggregate amount of such client's share
    purchases over a rolling twelve month period from the date of the
    transaction.
 
All shares purchased without a sales charge based on the aggregate purchase
amount equalling at least $500,000 will be subject to a contingent deferred
sales charge, for the first year after their purchase equal to 1% of the lower
of the original purchase price or the net asset value of such shares at the time
of redemption. See "Contingent Deferred Sales Charge -- Class A Shares."
 
From time to time, GT Global may reallow to broker/ dealers the full amount of
the sales charge or may pay out additional amounts to broker/dealers who sell
Class A shares. In some instances, GT Global may offer these reallowances or
additional payments only to broker/dealers that have sold or may sell
significant amounts of Class A shares. To the extent that GT Global reallows the
full amount of the sales charge to broker/dealers, such broker/dealers may be
deemed to be underwriters under the Securities Act of 1933, as amended.
Commissions also may be paid to broker/dealers and other financial institutions
that initiate purchases made pursuant to sales charge waivers (i) and (vii),
described below under "Sales Charge Waivers -- Class A Shares."
 
The following purchases may be aggregated for purposes of determining the
"Amount of Purchase":
 
(a) Individual purchases on behalf of a single purchaser, the purchaser's spouse
and their children under the age of 21 years including purchases in connection
with an employee benefit plan or plans exclusively for the benefit of such
individual(s), such as an IRA, individual Code Section 403(b) plan or
single-participant, self-employed individual retirement plan ("Keogh Plan") and
purchases made by a company controlled by such individual(s);
 
(b) Individual purchases by a trustee or other fiduciary purchasing shares for a
single trust estate or a single fiduciary account, including an employee benefit
plan (such as employer-sponsored pension, profit-sharing and stock bonus plans,
including plans under Code Section 401(k), and medical, life and disability
insurance trusts) other than a plan described in "(a)" above; and
 
(c) Individual purchases by a trustee or other fiduciary purchasing shares
concurrently for two or more employee benefit plans of a single employer or of
employers affiliated with each other (again excluding an employee benefit plan
described in "(a)" above).
 
                               Prospectus Page 20
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
 
SALES CHARGE WAIVERS -- CLASS A SHARES. Class A shares are sold at net asset
value without imposition of sales charges when investments are made by the
following classes of investors:
 
(i) Trustees or other fiduciaries purchasing shares for employee benefit plans
which are sponsored by organizations that have at least 100 but less than 1,000
employees, and trustees or other fiduciaries purchasing shares for employee
benefit plans which are sponsored by organizations with collective retirement
plan assets of $500,000 or more and have less than 100 employees, and purchases
of at least $500,000 by trustees or other fiduciaries of employee benefit plans
with collective retirement plan assets of $100 million or more.
 
(ii) Current or retired Trustees, Directors and officers of the investment
companies for which the Manager serves as investment manager and/or
administrator; employees or retired employees of the companies composing
Liechtenstein Global Trust or affiliated companies of Liechtenstein Global
Trust; the children, siblings and parents of the persons in the foregoing
categories; and trusts primarily for the benefit of such persons.
 
(iii) Registered representatives or full-time employees of broker/dealers that
have entered into dealer agreements with GT Global, and the children, siblings
and parents of such persons, and employees of financial institutions that
directly, or through their affiliates, have entered into dealer agreements with
GT Global (or that otherwise have an arrangement with respect to sales of Fund
shares with a broker/dealer that has entered into a dealer agreement with GT
Global) and the children, siblings and parents of such employees.
 
(iv) Companies exchanging shares with or selling assets to one or more of the GT
Global Mutual Funds pursuant to a merger, acquisition or exchange offer.
 
(v) Shareholders of any of the GT Global Mutual Funds as of April 30, 1987 who
since that date continually have owned shares of one or more of the GT Global
Mutual Funds.
 
(vi) Purchases made through the automatic investment of dividends and other
distributions paid by any of the other GT Global Mutual Funds.
 
(vii) Registered investment advisers, trust companies and bank trust departments
exercising DISCRETIONARY investment authority with respect to the money to be
invested in the GT Global Mutual Funds provided that the aggregate amount
invested pursuant to this sales charge waiver is at least $500,000, and further
provided that such money is not eligible to be invested in the Advisor Class.
 
(viii) Clients of administrators of tax-qualified employee benefit plans which
have entered into agreements with GT Global.
 
(ix) Retirement plan participants who borrow from their retirement accounts by
redeeming GT Global Mutual Fund shares and subsequently repay such loans via a
purchase of Fund shares.
 
(x) Retirement plan participants who receive distributions from a tax-qualified
employer-sponsored retirement plan which is invested in GT Global Mutual Funds,
the proceeds of which are reinvested in Fund shares.
 
(xi) Accounts not eligible for the Advisor Class as to which a financial
institution or broker/dealer charges an account management fee, provided the
financial institution or broker/dealer has entered into an agreement with GT
Global regarding such accounts.
 
(xii) Certain former AMA Investment Advisers' shareholders who became
shareholders of the GT Global Health Care Fund in October 1989, and who have
continuously held shares in the GT Global Mutual Funds since that time.
 
REINSTATEMENT PRIVILEGE. Shareholders who redeem their Class A shares in the
Fund have a one-time privilege of reinstating their investment by investing the
proceeds of the redemption at net asset value without a sales charge in Class A
shares of the Fund and/or one or more of the other GT Global Mutual Funds. The
Transfer Agent must receive from the investor or the investor's broker/dealer
within 180 days after the date of the redemption both a written request for
reinvestment and a check not exceeding the amount of the redemption proceeds.
The reinstatement purchase will be effected at the net asset value per share
next determined after such receipt. Gain on the redemption is taxable
notwithstanding exercise of the reinvestment privilege. See "Dividends, Other
Distributions and Federal Income Taxation -- Taxes."
 
REDUCED SALES CHARGE PLANS -- CLASS A SHARES. Class A shares of the Fund may be
purchased at reduced sales charges either through the Right of Accumulation or
under a Letter of Intent. For more details on these plans, investors should
contact their broker/dealers or the Transfer Agent.
 
RIGHT OF ACCUMULATION. Pursuant to the Right of Accumulation, investors are
permitted to purchase
 
                               Prospectus Page 21
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
shares of the Fund at the sales charge applicable to the total of (a) the dollar
amount then being purchased plus (b) the dollar amount of the investor's
concurrent purchases of other GT Global Mutual Funds (other than GT Global
Dollar Fund) plus (c) the price of all shares of GT Global Mutual Funds (other
than shares of GT Global Dollar Fund not acquired by exchange) already held by
the investor. To receive the Right of Accumulation, at the time of purchase
investors must give their brokers, the Transfer Agent or GT Global sufficient
information to permit confirmation of qualification. THE FOREGOING RIGHT OF
ACCUMULATION APPLIES ONLY TO CLASS A SHARES OF THE FUND AND OTHER GT GLOBAL
MUTUAL FUNDS (OTHER THAN GT GLOBAL DOLLAR FUND).
 
LETTER OF INTENT. In executing a Letter of Intent ("LOI") an investor indicates
an aggregate investment amount he or she intends to invest in the Class A shares
of the Fund and the Class A shares of other GT Global Mutual Funds (other than
GT Global Dollar Fund) in the following thirteen months. The LOI is included as
part of the Account Application located at the end of this Prospectus. The sales
charge applicable to that aggregate amount then becomes the applicable sales
charge on all purchases made concurrently with the execution of the LOI and in
the thirteen months following that execution. If an investor executes an LOI
within 90 days of a prior purchase of GT Global Mutual Fund Class A shares
(other than shares of GT Global Dollar Fund), the prior purchase may be included
under the LOI and an appropriate adjustment, if any, with respect to the sales
charges paid by the investor in connection with the prior purchase will be made,
based on the then-current net asset value(s) of the pertinent Fund(s).
 
If at the end of the thirteen month period covered by the LOI the total amount
of purchases does not equal the amount indicated, the investor will be required
to pay the difference between the sales charges paid at the reduced rate and the
sales charges applicable to the purchases actually made. Shares having a value
equal to 5% of the amount specified in the LOI will be held in escrow during the
thirteen month period (while remaining registered in the investor's name) and
are subject to redemption to assure any necessary payment to GT Global of a
higher applicable sales charge.
 
Investors should be aware that the Fund may, in the future, suspend the offering
of its shares although not for previously established LOIs. If all ongoing sales
of the Fund shares are suspended, however, an LOI executed in connection with
the offering of the Fund's shares may continue to be completed by the purchase
of shares of one or more other GT Global Mutual Funds (other than GT Global
Dollar Fund).
 
For purposes of an LOI, 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 purchase and redemption orders.
Such entities should be prepared to establish their qualification for such
treatment. THE FOREGOING LOI APPLIES ONLY TO CLASS A SHARES OF THE FUND AND
OTHER GT GLOBAL MUTUAL FUNDS (OTHER THAN GT GLOBAL DOLLAR FUND).
 
CONTINGENT DEFERRED SALES CHARGE -- CLASS A SHARES. Purchases of Class A shares
of $500,000 or more may be made without a sales charge. If a shareholder within
one year after the date of purchase redeems any Class A shares that were
purchased without a sales charge by reason of a purchase of $500,000 or more, a
contingent deferred sales charge of 1% of the lower of the original purchase
price or the net asset value of such shares at the time of redemption will be
charged. Class A shares will not be subject to the contingent deferred sales
charge to the extent that the value of such shares represents (1) reinvestment
of dividends or other distributions or (2) shares redeemed more than one year
after their purchase. Such shares purchased without a sales charge may be
exchanged for Class A shares of another GT Global Mutual Fund (other than GT
Global Dollar Fund) without the imposition of a contingent deferred sales
charge, although the contingent deferred sales charge described above will apply
to the redemption of the shares acquired through an exchange. The waivers set
forth under "Contingent Deferred Sales Charge Waivers" below apply to
redemptions of Class A shares upon which a contingent deferred sales charge
would otherwise be imposed. For federal income tax purposes, the amount of the
contingent deferred sales charge will reduce the gain or increase the loss, as
the case may be, on the amount realized on redemption. The amount of any
contingent deferred sales charge will be paid to GT Global.
 
                           PURCHASING CLASS B SHARES
 
The Fund's public offering price for Class B shares is the next determined net
asset value per share. See "Calculation of Net Asset Value." No initial sales
 
                               Prospectus Page 22
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
charge is imposed. A contingent deferred sales charge, however, is imposed on
certain redemptions of Class B shares. Because Class B shares are sold without
an initial sales charge, the Fund receives the full amount of the investor's
purchase payment.
 
Class B shares will not be subject to a contingent deferred sales charge to the
extent that the value of such shares represents: (1) reinvestment of dividends
or other distributions or (2) shares redeemed more than six years after their
purchase. Redemptions of most other Class B shares will be subject to a
contingent deferred sales charge. See "Contingent Deferred Sales Charge
Waivers." The amount of any applicable contingent deferred sales charge will be
calculated by multiplying the lesser of the original purchase price or the net
asset value of such shares at the time of redemption by the applicable
percentage shown in the table below:
 
<TABLE>
<CAPTION>
                                  CONTINGENT DEFERRED SALES
                                CHARGE AS A PERCENTAGE OF THE
                                LESSER OF NET ASSET VALUE AT
                                         REDEMPTION
                                       OR THE ORIGINAL
      REDEMPTION DURING                PURCHASE PRICE
- ------------------------------  -----------------------------
<S>                             <C>
1st Year Since Purchase.......                    5%
2nd Year Since Purchase.......                    4%
3rd Year Since Purchase.......                    3%
4th Year Since Purchase.......                    3%
5th Year Since Purchase.......                    2%
6th year Since Purchase.......                    1%
Thereafter....................                    0%
</TABLE>
 
In determining whether a contingent deferred sales charge is applicable, it will
be assumed that the redemption is made first of shares acquired pursuant to the
reinvestment of dividends and distributions; then of shares purchased seven
years or more prior to the redemption; and finally, of shares held for the
longest period of time within the applicable six-year period. For shares
acquired in an exchange, the length of the holding period will be measured from
the date of original purchase.
 
For example, assume an investor purchased 100 shares at $10 per share for a cost
of $1,000. Subsequently, the shareholder acquired 15 additional shares through
dividend reinvestment. During the second year after the purchase the investor
decided to redeem $500 of his or her investment. Assuming at the time of the
redemption a net asset value of $11 per share, the value of the investor's
shares would be $1,265 (115 shares at $11 per share). The contingent deferred
sales charge would not be applied to the value of the reinvested dividend
shares. Therefore, the 15 shares currently valued at $165.00 would be redeemed
without a contingent deferred sales charge. The number of shares needed to fund
the remaining $335.00 of the redemption would equal 30.455. Using the lower of
cost or market price to determine the contingent deferred sales charge the
original purchase price of $10.00 per share would be used. The contingent
deferred sales charge calculation would therefore be 30.455 shares times $10.00
per share at a contingent deferred sales charge rate of 4% (the applicable rate
in the second year after purchase) for a total contingent deferred sales charge
of $12.18.
 
Class B shares of the Fund that were acquired pursuant to the exchange privilege
during a tender offer by GT Global Floating Rate Fund ("Floating Rate Fund")
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 common stock of the Floating Rate Fund. The purchase of the Fund
will be deemed to have occurred at the time of the initial purchase to the
Floating Rate Fund's common stock.
 
For federal income tax purposes, the amount of the contingent deferred sales
charge will reduce the gain or increase the loss, as the case may be, on the
amount realized on redemption. The amount of any contingent deferred sales
charge will be paid to GT Global.
 
                              CONTINGENT DEFERRED
                              SALES CHARGE WAIVERS
 
The contingent deferred sales charge will be waived for (1) exchanges, as
described below; (2) redemptions in connection with the Fund's systematic
withdrawal plan not in excess of 12% of the value of the account annually; (3)
total or partial redemptions made within one year following the death or
disability of a shareholder; (4) minimum required distributions made in
connection with a GT Global IRA, Keogh Plan or custodial account under Section
403(b) of the Code or other retirement plan following attainment of age 70 1/2;
(5) total or partial redemptions resulting from a distribution following
retirement in the case of a tax-qualified employer-sponsored retirement plan;
(6) 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; (7) a one-time reinvestment in Class B shares of the Fund
within 180 days of a prior redemption; and (8) redemptions pursuant to the
Fund's right to liquidate a shareholder's account involuntarily; (9) redemptions
pursuant to distributions from a tax-qualified employer-sponsored retirement
plan, which is invested in GT Global
 
                               Prospectus Page 23
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
Mutual 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 GT Global Mutual Funds; (10) redemptions made in
connection with participant-directed exchanges between options in an
employer-sponsored benefit plan; (11) redemptions made for the purpose of
providing cash to fund a loan to a participant in a tax-qualified retirement
plan; (12) 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;
(13) 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 or the return of excess
aggregate contributions pursuant to Section 401(m)(6) of the Code; (14)
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 (15) 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.
 
            PROGRAMS APPLICABLE TO CLASS A SHARES AND CLASS B SHARES
 
AUTOMATIC INVESTMENT PLAN. Investors may purchase either Class A or Class B
shares of the Fund through the GT Global Automatic Investment Plan. Under this
Plan, an amount specified by the shareholder of $100 or more ($25 or more for
IRAs, Code Section 403(b)(7) custodial accounts and other tax-qualified
employer-sponsored retirement accounts) on a monthly or quarterly basis will be
sent to the Transfer Agent from the investor's bank for investment in the Fund.
Participants in the Automatic Investment Plan should not elect to receive
dividends or other distributions from the Fund in cash. A sales charge will be
applied to each automatic monthly purchase of Class A Fund shares in an amount
determined in accordance with the Right of Accumulation privilege described
above. To participate in the Automatic Investment Plan, investors should
complete the appropriate portion of the Supplemental Application provided at the
end of this Prospectus. Investors should contact their broker/dealers or GT
Global for more information.
 
DOLLAR COST AVERAGING PROGRAM. Investors may purchase either Class A or Class B
shares of the Fund through GT Global Dollar Cost Averaging Program whereby a
shareholder invests the same dollar amount each month; accordingly, the investor
purchases more shares when the Fund's net asset value is relatively low and
fewer shares when the Fund's net asset value is relatively high. This can result
in a lower average cost-per-share than if the shareholder followed a less
systematic approach. Dollar cost averaging does not assure a profit and does not
protect against loss in declining markets. Because such a program involves
continuous investment in securities regardless of fluctuating price levels of
such securities, investors should consider their financial ability to continue
purchases when prices are declining.
 
A participant in the GT Global Dollar Cost Averaging Program first designates
the size of his or her monthly investment in the Fund ("Monthly Investment")
after participation in the Program begins. The Monthly Investment must be at
least $1,000. The investor then will make an initial investment of at least
$10,000 in the GT Global Dollar Fund. Thereafter, each month an amount equal to
the specified Monthly Investment automatically will be redeemed from the GT
Global Dollar Fund and invested in Fund shares. A sales charge will be applied
to each automatic monthly purchase of Class A Fund shares in an amount
determined in accordance with the Right of Accumulation privilege described
above. Investors should contact their brokers or GT Global for more information.
 
PORTFOLIO REBALANCING PROGRAM. The GT Global Portfolio Rebalancing Program
("Program") permits eligible shareholders to establish and maintain an
allocation across a range of GT Global Mutual Funds. The Program automatically
rebalances holdings of GT Global Mutual 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, GT Global Mutual Funds ("Personal Portfolio") is to
be rebalanced on a monthly, quarterly, semiannual, or annual basis.
 
Rebalancing under the Program will be effected through the exchange of shares of
one or more GT Global Mutual Funds in the shareholder's Personal Portfolio for
shares of the same class(es) of one or
 
                               Prospectus Page 24
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
more other GT Global Mutual Funds in the shareholder's Personal Portfolio. See
"How to Make Exchanges." If shares of the Funds in a shareholder's Personal
Portfolio have appreciated during a rebalancing period, the Program will result
in shares of Fund(s) that have appreciated most during the period being
exchanged for shares of 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 TAX PURPOSES. See "Dividends, Other Distributions and Federal
Income Taxation." 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 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 a Fund's shares. Exchanges made
under the Program are not subject to the four free exchanges per year
limitation. The Funds and GT Global 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 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, Letter of Intent,
and Dollar Cost Averaging programs. Certain broker/dealers may charge a fee for
establishing accounts relating to the Program. Investors should contact their
broker/dealers or GT Global for more information.
 
                               Prospectus Page 25
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
 
                             HOW TO MAKE EXCHANGES
 
- --------------------------------------------------------------------------------
 
Shares of the Fund may be exchanged for shares of the same class of any of the
other GT Global Mutual Funds, based on their respective net asset values without
imposition of any sales charges, provided that the registration remains
identical. EXCHANGES ARE NOT TAX-FREE AND MAY RESULT IN A SHAREHOLDER'S
REALIZING A GAIN OR LOSS, AS THE CASE MAY BE, FOR TAX PURPOSES. See "Dividends,
Other Distributions and Federal Income Taxation." In addition to the Fund, the
GT Global Mutual Funds currently include:
 
   -- GT GLOBAL AMERICA SMALL CAP GROWTH FUND
   -- GT GLOBAL AMERICA MID CAP GROWTH FUND
   -- GT GLOBAL AMERICA VALUE FUND
   -- GT GLOBAL CONSUMER PRODUCTS AND
       SERVICES FUND
   -- GT GLOBAL DOLLAR FUND
   -- GT GLOBAL EMERGING MARKETS FUND
   -- GT GLOBAL EUROPE GROWTH FUND
   -- GT GLOBAL FINANCIAL SERVICES FUND
   -- GT GLOBAL GOVERNMENT INCOME FUND
   -- GT GLOBAL GROWTH & INCOME FUND
   -- GT GLOBAL HEALTH CARE FUND
   -- GT GLOBAL HIGH INCOME FUND
   -- GT GLOBAL INFRASTRUCTURE FUND
   -- GT GLOBAL INTERNATIONAL GROWTH FUND
   -- GT GLOBAL JAPAN GROWTH FUND
   -- GT GLOBAL LATIN AMERICA GROWTH FUND
   -- GT GLOBAL NATURAL RESOURCES FUND
   -- GT GLOBAL NEW DIMENSION FUND
   -- GT GLOBAL NEW PACIFIC GROWTH FUND
   -- GT GLOBAL STRATEGIC INCOME FUND
   -- GT GLOBAL TELECOMMUNICATIONS FUND
   -- GT GLOBAL WORLDWIDE GROWTH FUND
 
Up to four exchanges each year may be made without charge. A $7.50 service
charge will be imposed on each subsequent exchange. If an investor does not
surrender all of his or her shares in an exchange, the remaining balance in the
investor's account after the exchange must be at least $500. Exchange requests
received in good order by the Transfer Agent before the close of regular trading
on the NYSE on any Business Day will be processed at the net asset value
calculated on that day. The terms of the exchange offer may be modified at any
time, on 60 days' prior written notice.
 
A shareholder interested in making an exchange should contact his broker or the
Transfer Agent to request the prospectus of the other GT Global Mutual Fund(s)
being considered. Certain brokers may charge a fee for handling exchanges.
 
EXCHANGES BY TELEPHONE. A shareholder may give exchange instructions to his or
her broker/dealer or the Transfer Agent by telephone at the appropriate
toll-free number provided in the Shareholder Account Manual. Exchange orders
will be accepted by telephone provided that the exchange involves only
uncertificated shares on deposit in the shareholder's account or for which
certificates previously have been deposited.
 
Shareholders automatically have telephone privileges to authorize exchanges. The
Fund, GT Global and the Transfer Agent will not be liable for any loss or damage
for acting in good faith upon instructions received by telephone and reasonably
believed to be genuine. The Fund employs reasonable procedures to confirm that
instructions communicated by telephone are genuine prior to acting upon
instructions received by telephone, including requiring some form of personal
identification, providing written confirmation of such transactions, and/or tape
recording of telephone instructions.
 
EXCHANGES BY MAIL. Exchange orders should be sent by mail to the investor's
broker/dealer or to the Transfer Agent at the address set forth in the
Shareholder Account Manual.
 
LIMITATIONS ON PURCHASE ORDERS AND EXCHANGES. The GT Global Mutual Funds are not
intended to serve as vehicles for frequent trading in response to short-term
fluctuations in the market. Due to the disruptive effect that market-timing
investment strategies and excessive trading can have on efficient portfolio
management, each GT Global Mutual Fund and GT Global reserves the right to
refuse purchase orders and exchanges by any person or group, if, in the
Manager's judgment, such person or group was following a market-timing strategy
or was otherwise engaging in excessive trading.
 
In addition, each GT Global Mutual Fund and GT Global reserves the right to
refuse purchase orders and exchanges by any person or group if, in the Manager's
judgment, the Fund would not be able to invest the money effectively in
accordance with that Fund's investment objective and policies or would otherwise
potentially be adversely affected. Although a GT Global Mutual Fund will attempt
to give investors prior notice whenever it is reasonably able to do so, it may
impose the above restrictions at any time.
 
Finally, as described above, each GT Global Mutual Fund and GT Global reserve
the right to reject any purchase order.
 
                               Prospectus Page 26
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
 
                              HOW TO REDEEM SHARES
 
- --------------------------------------------------------------------------------
 
Fund shares may be redeemed at their net asset value (subject to any applicable
contingent deferred sales charge for Class B shares or, in limited
circumstances, Class A shares) and redemption proceeds will be sent within seven
days of the execution of a redemption request. If a redeeming shareholder owns
both Class A and Class B shares of the Fund, the Class A shares will be redeemed
first unless the shareholder specifically requests otherwise.
 
REDEMPTIONS THROUGH BROKERS/DEALERS. Shareholders with accounts at
broker/dealers which sell shares of the Fund may submit redemption requests to
such broker/dealers. If the shares are held in the broker/dealer's "street
name," the redemption must be made through the broker/ dealer. Broker/dealers
may honor a redemption request either by repurchasing shares from a redeeming
shareholder at the net asset value next determined after the broker/dealer
receives the request or, as described below, by forwarding such requests to the
Transfer Agent (see "How to Redeem Shares -- Redemptions Through the Transfer
Agent"). Redemption proceeds normally will be paid by check or, if offered by
the broker/dealer, credited to the shareholder's brokerage account at the
election of the shareholder. Broker/dealers may impose a service charge for
handling redemption transactions placed through them and may have other
requirements concerning redemptions. Accordingly, shareholders should contact
their broker/dealers for more details.
 
REDEMPTIONS THROUGH THE TRANSFER AGENT. Redemption requests may be transmitted
to the Transfer Agent by telephone or by mail, in accordance with the
instructions provided in the Shareholder Account Manual. Redemptions will be
effected at the net asset value next determined after the Transfer Agent has
received the request and any required supporting documentation (less any
applicable contingent deferred sales charge for Class B shares or, in limited
circumstances, Class A shares). Redemption requests will not require a signature
guarantee if the redemption proceeds are to be sent either: (i) to the redeeming
shareholder at the shareholder's address of record as maintained by the Transfer
Agent, provided the shareholder's address of record has not been changed within
the preceding thirty days; or (ii) directly to a pre-designated bank, savings
and loan or credit union account ("Pre-Designated Account"). ALL OTHER
REDEMPTION REQUESTS MUST BE ACCOMPANIED BY A SIGNATURE GUARANTEE OF THE
REDEEMING SHAREHOLDER'S SIGNATURE. A signature guarantee can be obtained from
any bank, U.S. trust company, a member firm of a U.S. stock exchange or a
foreign branch of any of the foregoing or other eligible guarantor institutions.
A notary public is not an acceptable guarantor. A shareholder with questions
concerning the Fund's signature guarantee requirement should contact the
Transfer Agent.
 
Shareholders may qualify to have redemption proceeds sent to a Pre-Designated
Account by completing the appropriate section of the Account Application at the
end of this Prospectus. Shareholders with Pre-Designated Accounts should request
that redemption proceeds be sent either by bank wire or by check. The minimum
redemption amount for a bank wire is $1,000. Shareholders requesting a bank wire
should allow two business days from the time the redemption request is effected
for the proceeds to be deposited in the shareholder's Pre-Designated Account.
See "How to Redeem Shares -- Other Important Redemption Information."
Shareholders may change their Pre-Designated Accounts only by a letter of
instruction to the Transfer Agent containing all account signatures, each of
which must be guaranteed. The Transfer Agent currently does not charge a bank
wire service fee for each wire redemption sent but reserves the right to do so
in the future. The shareholder's bank may charge a bank wire service fee.
 
REDEMPTIONS BY TELEPHONE. Redemption requests may be made by telephone by
calling the Transfer Agent at the appropriate toll free number provided in the
Shareholder Account Manual. Shareholders who hold certificates for shares may
not redeem by telephone. REDEMPTION REQUESTS MAY NOT BE MADE BY TELEPHONE FOR
THIRTY DAYS FOLLOWING ANY CHANGE OF THE SHAREHOLDER'S ADDRESS OF RECORD.
 
Shareholders automatically have telephone privileges to authorize redemptions.
The Fund, GT Global and the Transfer Agent will not be liable for any loss or
damage for acting in good faith upon instructions received by telephone and
reasonably believed to be genuine. The Fund
 
                               Prospectus Page 27
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
employs reasonable procedures to confirm that instructions communicated by
telephone are genuine prior to acting upon instructions received by telephone,
including requiring some form of personal identification, providing written
confirmation of such transactions, and/or tape recording of telephone
instructions.
 
REDEMPTIONS BY MAIL. Redemption requests should be mailed directly to the
Transfer Agent at the appropriate address provided in the Shareholder Account
Manual. As discussed above, requests for payment of redemption proceeds to a
party other than the shareholder of record and/or requests that redemption
proceeds be mailed to an address other than the shareholder's address of record
require a signature guarantee. In addition, if the shareholder's address of
record has been changed within the preceding thirty days, a signature guarantee
is required. Redemptions of shares for which certificates have been issued must
be accompanied by properly endorsed share certificates.
 
SYSTEMATIC WITHDRAWAL PLAN. Shareholders owning shares in the Fund with a value
of $10,000 or more may participate in the GT Global Systematic Withdrawal Plan.
A participating shareholder will receive proceeds from monthly, quarterly or
annual redemptions of Fund shares with respect to either Class A or Class B
shares. No contingent deferred sales charge will be imposed on redemptions made
under the Systematic Withdrawal Plan. The minimum withdrawal amount is $100. The
amount or percentage a participating shareholder specifies to be redeemed may
not, on an annualized basis, exceed 12% of the value of the account, as of the
time the shareholder elects to participate in the Systematic Withdrawal Plan. To
participate in the Systematic Withdrawal Plan, investors should complete the
appropriate portion of the Supplemental Application provided at the end of this
Prospectus. Investors should contact their broker/dealers or the Transfer Agent
for more information. With respect to Class A shares, participation in the
Systematic Withdrawal Plan concurrent with purchases of Class A shares of the
Fund may be disadvantageous to investors because of the sales charges involved
and possible tax implications, and therefore is discouraged. In addition,
shareholders who participate in the Systematic Withdrawal Plan should not elect
to reinvest dividends or other distributions in additional Fund shares.
 
REDEMPTION FEE. The Fund will deduct a 2% fee from the proceeds of all
redemptions of Class A shares of the Fund acquired as a result of the
reorganization of G.T. Developing Markets Fund, Inc. into the Fund. The
redemption fee will be imposed on all redemptions of such shares until
         , 1998 and is intended to offset brokerage and other costs the Fund may
experience as a result of such redemptions. The redemption fee will be paid to
the Fund and not to GT Global or the Manager.
 
OTHER IMPORTANT REDEMPTION INFORMATION. A request for redemption will not be
processed until all of the necessary documentation has been received in good
order. A shareholder in doubt as to what documents are required should contact
his broker/dealer or the Transfer Agent.
 
Except in extraordinary circumstances and as permitted under the 1940 Act,
payment for shares redeemed by telephone or in writing will be made promptly
after receipt of a redemption request, if in good order, but not later than
seven days after the date the request is executed. Requests for redemption which
are subject to any special conditions or which specify a future or past
effective date cannot be accepted.
 
If the Transfer Agent is requested to redeem shares for which the Fund has not
yet received good payment, the Fund may delay payment of redemption proceeds
until it has assured itself that good payment has been collected for the
purchase of the shares. In the case of purchases by check it can take up to 10
business days to confirm that the check has cleared and good payment has been
received. Redemption proceeds will not be delayed when shares have been paid for
by wire or when the investor's account holds a sufficient number of shares for
which funds already have been collected.
 
The Fund may redeem the shares of any shareholder whose account is reduced to
less than $500 in value through redemptions or other action by the shareholder.
Written notice will be given to the shareholder at least 60 days prior to the
date fixed for such redemption, during which time the shareholder may increase
his or her holdings to an aggregate amount of $500 or more (with a minimum
purchase of $100).
 
                               Prospectus Page 28
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
 
                           SHAREHOLDER ACCOUNT MANUAL
 
- --------------------------------------------------------------------------------
 
Shareholders are encouraged to place purchase, exchange and redemption orders
through their broker/dealers. Shareholders also may place such orders directly
through GT Global in accordance with this Manual. See "How to Invest," "How to
Make Exchanges," "How to Redeem Shares," and "Dividends, Other Distributions and
Federal Income Taxation Taxes" for more information.
 
The Fund's Transfer Agent is GT GLOBAL INVESTOR SERVICES, INC.
 
INVESTMENTS BY MAIL
 
Send completed Account Application (if initial purchase) or letter stating Fund
name, class of shares, shareholder's registered name and account number (if
subsequent purchase) with a check to:
 
    GT Global
    P.O. Box 7345
    San Francisco, California 94120-7345
 
INVESTMENTS BY BANK WIRE
 
An investor opening a new account should call 1-800-223-2138 to obtain an
account number. WITHIN SEVEN DAYS OF PURCHASE SUCH AN INVESTOR MUST SEND A
COMPLETED ACCOUNT APPLICATION CONTAINING THE INVESTOR'S CERTIFIED TAXPAYER
IDENTIFICATION NUMBER TO GT GLOBAL AT THE ADDRESS PROVIDED ABOVE UNDER
"INVESTMENTS BY MAIL." Wire instructions must state Fund name, class of shares,
shareholder's registered name and account number. Bank wires should be sent
through the Federal Reserve Bank Wire System to:
 
    WELLS FARGO BANK N.A.
    ABA 121000248
    Attn: GT GLOBAL
         Account No. 4023-050701
 
EXCHANGES BY TELEPHONE
 
Call GT Global at 1-800-223-2138
 
EXCHANGES BY MAIL
 
Send complete instructions, including name of Fund exchanging from, class of
shares, amount of exchange, name of the GT Global Mutual Fund exchanging into,
shareholder's registered name and account number, to:
 
    GT Global
    P.O. Box 7893
    San Francisco, California 94120-7893
 
REDEMPTIONS BY TELEPHONE
 
Call GT Global at 1-800-223-2138
 
REDEMPTIONS BY MAIL
 
Send complete instructions, including name of Fund, class of shares, amount of
redemption, shareholder's registered name and account number, to:
 
    GT Global
    P.O. Box 7893
    San Francisco, California 94120-7893
 
OVERNIGHT MAIL
 
Overnight mail services do not deliver to post office boxes. To send purchase,
exchange or redemption orders by overnight mail, comply with the above
instructions but send to the following:
 
    GT Global Investor Services, Inc.
    California Plaza
    2121 N. California Boulevard
    Suite 450
    Walnut Creek, California 94596
 
ADDITIONAL QUESTIONS
 
Shareholders with additional questions regarding purchase, exchange and
redemption procedures may call GT Global at 1-800-223-2138.
 
                               Prospectus Page 29
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
 
                         CALCULATION OF NET ASSET VALUE
 
- --------------------------------------------------------------------------------
 
The Fund calculates its net asset value as of the close of regular trading on
the NYSE (currently 4:00 p.m. Eastern time, unless weather, equipment failure or
other factors contribute to an earlier closing time) each Business Day. The
Fund's net asset value per share is computed by determining the value of its
total assets (the securities it holds plus any cash or other assets, including
dividends and interest accrued but not yet received), subtracting all of its
liabilities (including accrued expenses), and dividing the result by the total
number of shares outstanding. Net asset value is determined separately for each
class of the Fund's shares.
 
Equity securities are valued at the last sale price on the exchange or in the
over-the-counter market in which the securities are primarily traded, as of the
close of business on the day the securities are being valued or, lacking any
sales, at the last available bid price. Long-term obligations are valued at the
mean of representative quoted bid and asked prices for the securities or, if
such prices are not available, at prices for securities of comparable maturity,
quality and type; however, when the Manager deems it appropriate, prices
obtained from a bond pricing service will be used. Short-term debt investments
are amortized to maturity based on their cost, adjusted for foreign exchange
translation and market fluctuations, provided such valuations represent fair
value. When market quotations for futures and options positions held by the Fund
are readily available, those positions are valued based upon such quotations.
 
Securities and other assets for which market quotations are not readily
available are valued at fair value determined in good faith by or under the
direction of the Company's Board of Directors. Securities and other assets
quoted in foreign currencies are valued in U.S. dollars based on the prevailing
exchange rates on that day.
 
The Fund's portfolio securities, from time to time, may be listed primarily on
foreign exchanges or over-the-counter dealer markets that trade on days when the
NYSE is closed (such as a Saturday). As a result, the net asset value of the
Fund may be significantly affected by such trading on days when shareholders
cannot purchase or redeem Fund shares.
The different service and distribution fees borne by each class of shares will
result in different net asset values and dividends. The per share net asset
value of the Class B shares generally will be lower than that of the Class A
shares because of the higher service and distribution fees borne by the Class B
shares. The per share net asset value of the Advisor Class shares of the Fund
generally will be higher than that of the Class A and Class B shares because of
the absence of any service and distribution fees applicable to the Advisor Class
shares. It is expected, however, that the net asset value per share of Class A
and Class B shares will tend to converge immediately after the payment of
dividends, which will differ by approximately the amount of the service and
distribution fee accrual differential between the classes.
 
- --------------------------------------------------------------------------------
 
                         DIVIDENDS, OTHER DISTRIBUTIONS
                          AND FEDERAL INCOME TAXATION
 
- --------------------------------------------------------------------------------
 
DIVIDENDS AND OTHER DISTRIBUTIONS. The Fund annually declares and pays as a
dividend all of its net investment income, if any, which includes dividends,
accrued interest and earned discount (including both original issue and market
discounts) less applicable expenses. The Fund also annually distributes
substantially all of its realized net capital gains and net gains from foreign
currency transactions, if any. The Fund may make an additional dividend or other
distribution if necessary to avoid a 4% excise tax on certain undistributed
income and gain.
 
                               Prospectus Page 30
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
 
Dividends and other distributions paid by the Fund with respect to all classes
of its shares are calculated in the same manner and at the same time. The per
share income dividends on Class B shares will be lower than the per share income
dividends on Class A shares as a result of the higher service and distribution
fees applicable to Class B shares; and the per share income dividends on both
such classes of shares will be lower than the per share income dividends on the
Advisor Class shares as a result of the absence of any service and distribution
fees applicable to Advisor Class shares. SHAREHOLDERS MAY ELECT:
 
/ / to have all dividends and other distributions automatically reinvested in
    additional Fund shares of the distributing class (or in shares of the
    corresponding class of other GT Global Mutual Funds); or
 
/ / to receive dividends in cash and have other distributions automatically
    reinvested in additional Fund shares of the distributing class (or in shares
    of the corresponding class of other GT Global Mutual Funds); or
 
/ / to receive other distributions in cash and have dividends automatically
    reinvested in additional Fund shares of the distributing class (or in shares
    of the corresponding class of other GT Global Mutual Funds); or
 
/ / to receive dividends and other distributions in cash.
 
Automatic reinvestments in additional shares are made at net asset value without
imposition of a sales charge. IF NO ELECTION IS MADE BY A SHAREHOLDER, ALL
DIVIDENDS AND OTHER DISTRIBUTIONS WILL BE AUTOMATICALLY REINVESTED IN ADDITIONAL
FUND SHARES OF THE DISTRIBUTING CLASS. Reinvestments in another GT Global Mutual
Fund may only be directed to an account with the identical shareholder
registration and account number. These elections may be changed by a shareholder
at any time; to be effective with respect to a distribution, the shareholder or
the shareholder's broker must contact the Transfer Agent by mail or telephone at
least 15 Business Days prior to the payment date. THE FEDERAL INCOME TAX
CONSEQUENCES OF DIVIDENDS AND OTHER DISTRIBUTIONS ARE THE SAME WHETHER THEY ARE
RECEIVED IN CASH OR REINVESTED IN ADDITIONAL SHARES.
 
Any dividend or other distribution paid by the Fund has the effect of reducing
the net asset value per share on the ex-distribution date by the amount thereof.
Therefore, a dividend or other distribution paid shortly after a purchase of
shares would represent, in substance, a return of capital to the shareholder (to
the extent the distribution is paid on the shares so purchased), even though
subject to income tax, as discussed below.
 
TAXES. The Fund intends to continue to qualify for treatment as a regulated
investment company under the Code. In each taxable year that the Fund so
qualifies, the Fund (but not its shareholders) will be relieved of federal
income tax on that part of its investment company taxable income (consisting
generally of net investment income, net gains from certain foreign currency
transactions and net short-term capital gain) and net capital gain (i.e., the
excess of net long-term capital gain over net short-term capital loss) that is
distributed to its shareholders.
 
Dividends from the Fund's investment company taxable income (whether paid in
cash or reinvested in additional shares) are taxable to its shareholders as
ordinary income to the extent of its earnings and profits. Distributions of the
Fund's net capital gain, when designated as such, are taxable to its
shareholders as long-term capital gain, regardless of how long they have held
their Fund shares and whether paid in cash or reinvested in additional shares.
 
The Taxpayer Relief Act of 1997 ("Act"), enacted in August 1997, dramatically
changes the taxation of net capital gain, by applying different rates thereto
depending on the taxpayer's holding period and marginal rate of federal income
tax. The Act, however, does not address the application of these rules to
distributions by regulated investment companies and instead authorizes the
issuance of regulations to do so. Accordingly, shareholders should consult their
tax advisers as to the effect of the Act on distributions by the Fund to them of
net capital gain.
 
The Fund provides federal tax information to its shareholders annually,
including information about dividends and other distributions paid during the
preceding year and, under certain circumstances, the shareholders' respective
shares of any foreign taxes paid by the Fund, in which event each shareholder
would be required to include in his or her gross income his or her pro rata
share of those taxes but might be entitled to claim a credit or deduction for
them.
 
The Fund must withhold 31% from dividends, capital gain distributions and
redemption proceeds payable to any individuals and certain other noncorporate
shareholders who have not furnished to the Fund a correct taxpayer
identification
 
                               Prospectus Page 31
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
number or a properly completed claim for exemption on Form W-8 or W-9.
Withholding at that rate also is required from dividends and capital gain
distributions payable to such shareholders who otherwise are subject to backup
withholding. Fund accounts opened via a bank wire purchase (see "How to Invest
- -- Purchases Through the Distributor") are considered to have uncertified
taxpayer identification numbers unless a completed Form W-8 or W-9 or Account
Application is received by the Transfer Agent within seven days after the
purchase. A shareholder should contact the Transfer Agent if the shareholder is
uncertain whether a proper taxpayer identification number is on file with the
Fund.
 
A redemption of Fund shares may result in taxable gain or loss to the redeeming
shareholder, depending upon whether the redemption proceeds are more or less
than the shareholder's adjusted basis for the redeemed shares (which normally
includes any initial sales charge paid on Class A shares). An exchange of Fund
shares for shares of another GT Global Mutual Fund generally will have similar
tax consequences. However, special tax rules apply when a shareholder (1)
disposes of Class A shares through a redemption or exchange within 90 days after
purchase and (2) subsequently acquires Class A shares of the Fund or of any
other GT Global Mutual Fund on which an initial sales charge normally is imposed
without paying that sales charge due to the reinstatement privilege or exchange
privilege. In these cases, any gain on the disposition of the original Class A
shares will be increased, or loss decreased, by the amount of the sales charge
paid when those shares were acquired, and that amount will increase the adjusted
basis of the shares subsequently acquired. In addition, if Fund shares are
purchased within 30 days before or after redeeming other Fund shares (regardless
of class) at a loss, all or a part of the loss will not be deductible and
instead will increase the basis of the newly purchased shares.
 
The foregoing is only a summary of some of the important federal tax
considerations generally affecting the Fund and its shareholders. See "Taxes" in
the Statement of Additional Information for a further discussion. There may be
other federal, state, local or foreign tax considerations applicable to a
particular investor. Prospective investors therefore are urged to consult their
tax advisers.
 
- --------------------------------------------------------------------------------
 
                                   MANAGEMENT
- --------------------------------------------------------------------------------
 
The Company's Board of Directors has overall responsibility for the operation of
the Fund. Pursuant to such responsibility, the Board has approved contracts with
various financial organizations to provide, among other things, day to day
management services required by the Fund. See "Directors and Executive Officers"
in the Statement of Additional Information for a complete description of the
Directors of the Company.
 
INVESTMENT MANAGEMENT AND ADMINISTRATION. Services provided by Chancellor LGT
Asset Management, Inc. (the "Manager") as the Fund's investment manager and
administrator include, but are not limited to, determining the composition of
the Fund's portfolio and placing orders to buy, sell or hold particular
securities; furnishing corporate officers and clerical staff; providing office
space, services and equipment; and supervising all matters relating to the
Fund's operation. For these services, the Fund pays the Manager investment
management and administration fees, computed daily and paid monthly, based on
its average daily net assets, at the annualized rate of .975% on the first $500
million, .95% on the next $500 million, .925% on the next $500 million and .90%
on amounts thereafter. This rate is higher than that paid by most mutual funds.
The Manager and GT Global have undertaken to limit the Fund's expenses
(exclusive of brokerage commissions, taxes, interest and extraordinary expenses)
to the annual rate of 2.00% and 2.50% of the average daily net assets of the
Fund's Class A and Class B shares, respectively. These undertakings may be
changed or eliminated in the future.
 
The Manager also serves as the Fund's pricing and accounting agent. For these
services the Manager receives a fee at an annual rate derived by applying 0.03%
to the first $5 billion of assets of GT Global Mutual Funds and 0.02% to the
assets in excess of $5 billion and allocating the result according to the Fund's
average daily net assets.
 
The Manager provides investment management and/or administration services to the
GT Global Mutual Funds. The Manager and its worldwide asset management
affiliates have provided investment management and/or administration services to
 
                               Prospectus Page 32
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
institutional, corporate and individual clients around the world since 1969. The
U.S. offices of the Manager are located at 50 California Street, 27th Floor, San
Francisco, CA 94111, and 1166 Avenue of the Americas, New York, NY 10036.
 
The Manager and its worldwide affiliates, including LGT Bank in Liechtenstein,
formerly Bank in Liechtenstein, compose Liechtenstein Global Trust, formerly BIL
GT Group Limited. Liechtenstein Global Trust is a provider of global asset
management and private banking products and services to individual and
institutional investors. Liechtenstein Global Trust is controlled by the Prince
of Liechtenstein Foundation, which serves as a parent organization for the
various business enterprises of the Princely Family of Liechtenstein. The
principal business address of the Prince of Liechtenstein Foundation is
Herrengasse 12, FL-9490, Vaduz, Liechtenstein.
 
As of        , 1997, the Manager and its worldwide asset management affiliates
managed approximately $   billion. In the United States, as of        , 1997,
the Manager managed or administered approximately $   billion of GT Global
Mutual Funds. As of        , 1997, assets entrusted to Liechtenstein Global
Trust totaled approximately $   billion.
 
In addition to the investment resources of its San Francisco and New York
offices, the Manager draws upon the expertise, personnel, data and systems of
other offices of Liechtenstein Global Trust, including investment offices in
Frankfurt, Hong Kong, London, Singapore, Sydney, Tokyo, and Toronto. In managing
the GT Global Mutual Funds, the Manager employs a team approach, taking
advantage of its investment resources around the world in seeking to achieve the
Fund's investment objective. Many of the GT Global Mutual Funds' portfolio
managers are natives of the countries in which they invest, speak local
languages and/or live or work in the markets they follow.
 
The investment professionals primarily responsible for the portfolio management
of the Fund are as follows:
 
<TABLE>
<CAPTION>
                                 RESPONSIBILITIES                             BUSINESS EXPERIENCE
       NAME/OFFICE                 FOR THE FUND                                 PAST FIVE YEARS
- --------------------------  --------------------------  ---------------------------------------------------------------
<S>                         <C>                         <C>
Allan Conway                Portfolio Manager since     Mr. Conway joined Chancellor LGT Asset Management, Inc. (the
 London                      1997                        "Manager") and LGT Asset Management PLC (London), an affiliate
                                                         of the Manager, in January 1997 as Head of Global Emerging
                                                         Markets. Based in London, he manages a centralized team of
                                                         global emerging market fund managers. From 1992 to 1997, Mr.
                                                         Conway was Director of International Equities at Hermes
                                                         Investment Management, and from 1982 to 1992 was a Portfolio
                                                         Manager, and eventually overall Head of Overseas Equities, at
                                                         Provident Mutual.
Michael Mabbutt             Portfolio Manager since     Mr. Mabbutt joined Chancellor LGT Asset Management, Inc. (the
                             1997                        "Manager") and LGT Asset Management PLC (London), an affiliate
                                                         of the Manager, in December 1996. He was appointed Head of
                                                         Global Emerging Market Debt for the Manager in April 1997.
                                                         Prior to joining the Manager, he was a Senior Portfolio
                                                         Manager for global fixed income at Baring Asset Management in
                                                         London from 1992 to 1996. At Baring Asset Management, he was
                                                         responsible for developing the emerging market debt process as
                                                         head of the five member Emerging Market Fixed Income Strategy
                                                         Group.
Cheng-Hock Lau              Portfolio Manager since     Mr. Lau has been Chief Investment Officer for Developed Market
                             1997                        Debt for the Manager since November 1996, and was a Senior
                                                         Portfolio Manager for global/international fixed income for
                                                         the Manager from July 1995 to November 1996. Mr. Lau was a
                                                         Senior Vice President and Senior Portfolio Manager for
                                                         Fiduciary Trust Company International from 1993 to 1995, and
                                                         Vice President at Bankers Trust Company from 1991 to 1993.
</TABLE>
 
                               Prospectus Page 33
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
 
In placing securities orders for the Fund's portfolio transactions, the Manager
seeks to obtain the best net results. Consistent with its obligation to obtain
the best net results, the Manager may consider a broker/dealer's sale of shares
of the GT Global Mutual Funds as a factor in considering through whom portfolio
transactions will be effected. Brokerage transactions may be executed through
affiliates of Liechtenstein Global Trust.
 
DISTRIBUTION OF FUND SHARES. GT Global is the distributor of the Fund's Class A
and Class B shares. GT Global is a subsidiary of Liechtenstein Global Trust with
offices at 50 California Street, 27th Floor, San Francisco, California 94111. As
distributor, GT Global collects the sales charges imposed on purchases of Class
A shares and any contingent deferred sales charges that may be imposed on
certain redemptions on Class A or Class B shares. GT Global reallows a portion
of the sales charge on Class A shares to broker/dealers that have sold such
shares in accordance with the schedule set forth above under "How to Invest." In
addition, GT Global pays a commission equal to 4.00% of the amount invested to
broker/dealers who sell Class B shares. A commission with respect to Class B
shares is not paid on exchanges or certain reinvestments in Class B shares.
 
The Fund reserves the right to suspend the offering of its shares upon the
advice of the Manager that doing so is in the best interests of the portfolio
management process.
 
GT Global, at its own expense, may provide additional promotional incentives to
brokers that sell shares of the Fund and/or shares of the other GT Global Mutual
Funds. In some instances additional compensation or promotional incentives may
be offered to brokers that have sold or may sell significant amounts of shares
during specified periods of time. Such compensation and incentives may include,
but are not limited to, cash, merchandise, trips and financial assistance to
broker/ dealers in connection with preapproved conferences or seminars, sales or
training programs for invited sales personnel, payment for travel expenses
(including meals and lodging) incurred by sales personnel and members of their
families or other invited guests to various locations for such seminars or
training programs, seminars for the public, advertising and sales campaigns
regarding one or more of the GT Global Mutual Funds, and/ or other events
sponsored by the broker/dealers. In addition, GT Global makes ongoing payments
to brokerage firms, financial institutions (including banks) and others that
facilitate the administration and servicing of shareholder accounts.
Under a plan of distribution adopted by the Company's Board of Directors
pursuant to Rule 12b-1 under the 1940 Act, with respect to the Fund's Class A
shares ("Class A Plan"), the Fund may pay GT Global a service fee at the
annualized rate of up to 0.25% of the average daily net assets of the Fund's
Class A shares for its expenditures incurred in servicing and maintaining
shareholder accounts. Under the Class A Plan for the Fund, the Fund may also pay
GT Global a distribution fee at the annualized rate of up to 0.50% of the
average daily net assets of the Fund's Class A shares, less any amounts paid by
the Fund as the aforementioned service fee for its expenditures in providing
services as distributor. All expenses for which GT Global is reimbursed under
the Class A Plan will have been incurred within one year of such reimbursement.
 
Pursuant to a separate plan of distribution adopted with respect to the Fund's
Class B shares ("Class B Plan"), the Fund may pay GT Global a service fee at the
annualized rate of up to 0.25% of the average daily net assets of the Fund's
Class B shares for its expenditures incurred in servicing and maintaining
shareholder accounts, and may pay GT Global a distribution fee at the annualized
rate of up to 0.75% of the average daily net assets of the Fund's Class B shares
for its expenditures incurred in providing services as distributor. Expenses
incurred under the Class B Plan in excess of 1.00% annually may be carried
forward for reimbursement in subsequent years as long as that Plan continues in
effect.
 
GT Global's service and distribution expenses covered by the Plans include the
payment of ongoing commissions; the cost of any additional compensation paid by
GT Global to brokers/dealers; the costs of printing and mailing to prospective
investors prospectuses and other materials relating to the Fund; the costs of
developing, printing, distributing and publishing advertisements and other sales
literature; and allocated costs relating to GT Global's distribution activities,
including, among other things, employee salaries, bonuses and other overhead
expenses. In addition, its expenses under the Class B Plan include payment of
initial sales commissions to broker/ dealers and interest on any unreimbursed
amounts carried forward thereunder.
 
The Glass-Steagall Act and other applicable laws, among other things, generally
prohibit federally
 
                               Prospectus Page 34
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
chartered or supervised banks from engaging in the business of underwriting or
distributing securities. Accordingly, GT Global intends to engage banks (if at
all) only to perform administrative and shareholder servicing functions. Banks
and broker/ dealer affiliates of banks may also execute dealer agreements with
GT Global for the purpose of selling shares of the Fund. If a bank were
prohibited from so acting, its shareholder clients would be permitted to remain
shareholders, and alternative means for continuing the servicing of such
shareholders would be sought. It is not expected that shareholders would suffer
any adverse financial consequences as a result of any of these occurrences.
 
- --------------------------------------------------------------------------------
 
                               OTHER INFORMATION
 
- --------------------------------------------------------------------------------
 
CONFIRMATIONS AND REPORTS TO SHAREHOLDERS. Each time a transaction is made that
affects a shareholder's account in the Fund, the shareholder will receive from
the Transfer Agent a confirmation statement reflecting the transaction.
Confirmations for transactions effected pursuant to the Fund's Automatic
Investment Plan, Systematic Withdrawal Plan, and automatic dividend reinvestment
program may be provided quarterly. Shortly after the end of the Fund's fiscal
year on October 31 and fiscal half-year on April 30 of each year, shareholders
receive an annual and semiannual report, respectively. In addition, the federal
income tax status of distributions made by the relevant Fund(s) to shareholders
is reported after the end of each calendar year on Form 1099-DIV. Under certain
circumstances, duplicate mailings of the foregoing reports to the same household
may be consolidated.
 
ORGANIZATION OF THE COMPANY. The Company was organized as a Maryland corporation
on October 29, 1987. From time to time, the Company established and may continue
to establish other funds, each corresponding to a distinct investment portfolio
and a distinct series of the Company's common stock. Shares of the Fund are
entitled to one vote per share (with proportional voting for fractional shares)
and are freely transferable. Shareholders have no preemptive or conversion
rights.
 
On any matter submitted to a vote of shareholders, shares of the Fund will be
voted by the Fund's shareholders individually when the matter affects the
specific interest of the Fund only, such as approval of its investment
management arrangements. In addition, each class of shares of the Fund has
exclusive voting rights with respect to its distribution plan. The shares of the
Company's funds will be voted in the aggregate on other matters, such as the
election of Directors and ratification of the Board of Directors' selection of
the Company's independent accountants.
 
Normally there will be no annual meeting of shareholders in any year, except as
required under the 1940 Act. The Company would be required to hold a
shareholders' meeting in the event that at any time less than a majority of the
Directors holding office had been elected by shareholders. Directors shall
continue to hold office until their successors are elected and have qualified.
Shares of the Company's funds do not have cumulative voting rights, which means
that the holders of a majority of the shares voting for the election of
Directors can elect all the Directors. A Director may be removed upon a majority
vote of the shareholders qualified to vote in the election. Shareholders holding
10% of the Company's outstanding voting securities may call a meeting of
shareholders for the purpose of voting upon the question of removal of any
Director or for any other purpose. The 1940 Act requires the Company to assist
shareholders in calling such a meeting.
 
Pursuant to the Company's Articles of Incorporation, it may issue six billion
shares. Of this number, 300 million shares have been classified as shares of the
Fund; 100 million shares have been classified as Class A shares of the Fund, 100
million shares have been classified as Class B shares of the Fund, and 100
million shares have been classified as Advisor Class shares of the Fund. This
amount may be increased from time to time in the discretion of the Board of
Directors. Each share of the Fund represents an interest in the Fund only, has a
par value of $0.0001 per share, represents an equal proportionate interest in
the Fund with other shares of the Fund 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
 
                               Prospectus Page 35
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
the Board of Directors. Each Class A, Class B and Advisor Class share of the
Fund is equal as to earnings, assets and voting privileges, except as noted
above, and each class bears the expenses, if any, related to the distribution of
its shares. Shares of the Fund when issued are fully paid and nonassessable.
 
SHAREHOLDER INQUIRIES. Shareholder inquiries may be made by calling the Fund
toll free at (800) 223-2138 or by writing to the Fund at 50 California Street,
27th Floor, San Francisco, California 94111.
 
PERFORMANCE INFORMATION. The Fund, from time to time, may include information on
its investment results and/or comparisons of its investment results to various
unmanaged indices or results of other mutual funds or groups of mutual funds in
advertisements, sales literature or reports furnished to present or prospective
shareholders.
 
In such materials, the Fund may quote its average annual total return
("Standardized Return"). Standardized Return is calculated separately for each
class of shares of the Fund. Standardized Return shows percentage rates
reflecting the average annual change in the value of an assumed investment in
the Fund at the end of one-, five- and ten-year periods, reduced by the maximum
applicable sales charge imposed on sales of Fund shares. If a one-, five- and/or
ten-year period has not yet elapsed, data will be provided as of the end of a
shorter period corresponding to the life of the Fund. Standardized Return
assumes reinvestment of all dividends and other distributions.
 
In addition, in order to more completely represent the Fund's performance or
more accurately compare such performance to other measures of investment return,
the Fund also may include in advertisements, sales literature and shareholder
reports other total return performance data ("Non-Standardized Return").
Non-Standardized return reflects percentage rates of return encompassing all
elements of total return (e.g., income and capital appreciation or
depreciation); it assumes reinvestment of all dividends and other distributions.
Non-Standardized Return may be quoted for the same or different periods as those
for which Standardized Return is quoted; it may consist of an aggregate or
average annual percentage rate of return, actual year-by-year rates or any
combination thereof. Non-Standardized Return may or may not take sales charges
into account; performance data calculated without taking the effect of sales
charges into account will be higher than data including the effect of such
charges.
 
The Fund's performance data reflects past performance and is not necessarily
indicative of future results. The Fund's investment results will vary from time
to time depending upon market conditions, the composition of its portfolio and
its operating expenses. These factors and possible differences in calculation
methods should be considered when comparing the Fund's investment results with
those published for other investment companies, other investment vehicles and
unmanaged indices. The Fund's results also should be considered relative to the
risks associated with its investment objective and policies. See "Investment
Results" in the Statement of Additional Information.
 
The Fund's annual report contains additional information with respect to its
performance. The annual report is available to investors upon request and free
of charge.
 
TRANSFER AGENT. Shareholder servicing, reporting and general transfer agent
functions for the Fund are performed by GT Global Investor Services, Inc. The
Transfer Agent is an affiliate of the Manager and GT Global and a subsidiary of
Liechtenstein Global Trust, and maintains its offices at California Plaza, 2121
North California Boulevard, Suite 450, Walnut Creek, California 94596.
 
CUSTODIAN. State Street Bank and Trust Company, 225 Franklin Street, Boston,
Massachusetts 02110 is custodian of the Fund's assets.
 
COUNSEL. The law firm of Kirkpatrick & Lockhart LLP, 1800 Massachusetts Avenue,
N.W., Washington, D.C. 20036-1800, acts as counsel to the Company and the Fund.
Kirkpatrick & Lockhart LLP also acts as counsel to the Manager, GT Global and
the Transfer Agent in connection with other matters.
 
INDEPENDENT ACCOUNTANTS. The Company's and the Fund's independent accountants
are Coopers & Lybrand L.L.P., One Post Office Square, Boston, Massachusetts
02109. Coopers & Lybrand L.L.P. conducts an annual audit of the Fund, assists in
the preparation of the Fund's federal and state income tax returns and consults
with the Company and the Fund as to matters of accounting, regulatory filings,
and federal and state income taxation.
 
MULTIPLE TRANSLATIONS OF THE PROSPECTUS. This Prospectus may be translated into
other languages. In the event of any inconsistency or ambiguity as to the
meaning of any word or phrase contained in a translation, the English text shall
prevail.
 
                               Prospectus Page 36
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
 
                                     NOTES
 
- --------------------------------------------------------------------------------
 
                               Prospectus Page 37
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
 
                                     NOTES
 
- --------------------------------------------------------------------------------
 
                               Prospectus Page 38
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
 
                                     NOTES
 
- --------------------------------------------------------------------------------
 
                               Prospectus Page 39
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
 
                             GT GLOBAL MUTUAL FUNDS
 
  GT GLOBAL OFFERS A BROAD RANGE OF MUTUAL FUNDS TO COMPLEMENT MANY INVESTORS'
  PORTFOLIOS.  FOR MORE INFORMATION  AND A PROSPECTUS ON  ANY GT GLOBAL MUTUAL
  FUND, INCLUDING FEES, EXPENSES AND THE  RISKS OF GLOBAL AND EMERGING  MARKET
  INVESTING  AND THE RISKS OF INVESTING  IN RELATED INDUSTRIES, PLEASE CONTACT
  YOUR FINANCIAL ADVISER OR CALL GT GLOBAL DIRECTLY AT 1-800-824-1580.
 
GROWTH FUNDS
 
/ / GLOBALLY DIVERSIFIED FUNDS
 
GT GLOBAL WORLDWIDE GROWTH FUND
Invests around the world, including the U.S.
 
GT GLOBAL INTERNATIONAL GROWTH FUND
Provides portfolio diversity by investing outside
the U.S.
 
GT GLOBAL EMERGING MARKETS FUND
Gives access to the growth potential of developing economies
 
GT GLOBAL DEVELOPING MARKETS FUND
Invests in debt and equity securities of developing market issuers
 
GT GLOBAL NEW DIMENSION FUND
Captures global growth themes by investing directly in the six GT Global Theme
Funds
 
/ / GLOBAL THEME FUNDS
 
GT GLOBAL CONSUMER PRODUCTS AND
SERVICES FUND
Invests in companies that manufacture, market, retail, or distribute consumer
products or services
 
GT GLOBAL FINANCIAL SERVICES FUND
Focuses on the worldwide opportunities from the demand for financial services
and products
 
GT GLOBAL HEALTH CARE FUND
Invests in growing health care industries worldwide
 
GT GLOBAL INFRASTRUCTURE FUND
Seeks companies that build, improve or maintain a country's infrastructure
 
GT GLOBAL NATURAL RESOURCES FUND
Concentrates on companies that own, explore or develop natural resources
 
GT GLOBAL TELECOMMUNICATIONS FUND
Invests in companies worldwide that develop, manufacture or sell
telecommunications services or equipment
 
/ / REGIONALLY DIVERSIFIED FUNDS
 
GT GLOBAL NEW PACIFIC GROWTH FUND
Offers access to the emerging and established markets of the Pacific Rim,
excluding Japan
 
GT GLOBAL EUROPE GROWTH FUND
Focuses on investment opportunities in the new, unified Europe
 
GT GLOBAL LATIN AMERICA GROWTH FUND
Invests in the emerging markets of Latin America
 
/ / SINGLE COUNTRY FUNDS
 
GT GLOBAL AMERICA SMALL CAP GROWTH FUND
Invests in equity securities of small U.S. companies
 
GT GLOBAL AMERICA MID CAP GROWTH FUND
Concentrates on medium-sized companies in the U.S.
 
GT GLOBAL AMERICA VALUE FUND
Concentrates on equity securities of large cap U.S. companies believed to be
undervalued
 
GT GLOBAL JAPAN GROWTH FUND
Provides U.S. investors with direct access to the Japanese market
 
GROWTH AND INCOME FUND
 
GT GLOBAL GROWTH & INCOME FUND
Invests in blue-chip stocks and government bonds from around the world
 
INCOME FUNDS
 
GT GLOBAL GOVERNMENT INCOME FUND
Earns monthly income from global government securities
 
GT GLOBAL STRATEGIC INCOME FUND
Allocates its assets among debt securities from the U.S., developed foreign
countries and emerging markets
 
GT GLOBAL HIGH INCOME FUND
Invests in debt securities in emerging markets
 
GT GLOBAL FLOATING RATE FUND
Invests primarily in senior secured floating rate loans that have the potential
to achieve a high level of current income
 
MONEY MARKET FUND
 
GT GLOBAL DOLLAR FUND
Invests in high quality, U.S. dollar-denominated money market securities
worldwide for stability and preservation of capital
 
[LOGO]
 
  NO DEALER, SALES REPRESENTATIVE OR OTHER PERSON HAS BEEN AUTHORIZED TO  GIVE
  ANY  INFORMATION  OR  TO  MAKE  ANY  REPRESENTATION  NOT  CONTAINED  IN THIS
  PROSPECTUS AND, IF GIVEN  OR MADE, SUCH  INFORMATION OR REPRESENTATION  MUST
  NOT BE RELIED UPON AS HAVING BEEN AUTHORIZED BY G.T. INVESTMENT FUNDS, INC.,
  GT  GLOBAL DEVELOPING MARKETS FUND, CHANCELLOR LGT ASSET MANAGEMENT, INC. OR
  GT GLOBAL, INC.  THIS PROSPECTUS  DOES NOT CONSTITUTE  AN OFFER  TO SELL  OR
  SOLICITATION OF ANY OFFER TO BUY ANY OF THE SECURITIES OFFERED HEREBY IN ANY
  JURISDICTION TO ANY PERSON TO WHOM IT IS UNLAWFUL TO MAKE SUCH OFFER IN SUCH
  JURISDICTION.
                                                                 GROPV703 MC
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND:
                                 ADVISOR CLASS
 
                         PROSPECTUS -- NOVEMBER 1, 1997
- --------------------------------------------------------------------------------
 
GT GLOBAL DEVELOPING MARKETS FUND (the "Fund") primarily seeks long-term capital
appreciation. Its secondary investment objective is income, to the extent
consistent with seeking capital appreciation. The Fund normally invests
substantially all of its assets in issuers in the developing (or "emerging")
markets of Asia, Europe, Latin America and elsewhere. A majority of the Fund's
assets ordinarily is invested in emerging market equity securities. The Fund may
also invest in emerging market debt securities, which are selected based on
their potential to provide a combination of capital appreciation and current
income. There can be no assurance that the Funds will achieve its investment
objectives.
 
The Fund is managed by Chancellor LGT Asset Management, Inc. (the "Manager").
The Manager and its worldwide affiliates are part of Liechtenstein Global Trust,
a provider of global asset management and private banking products and services
to individual and institutional investors.
 
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.
 
The Fund is designed for long-term investors and not as a trading vehicle. The
Fund does not represent a complete investment program, nor is it suitable for
all investors. The Fund may invest significantly in equity and high yield, high
risk ("lower quality") debt securities that are predominantly speculative.
Investments of this type are subject to a greater risk of loss of principal and
interest. The Fund's investments in securities of issuers in developing markets
involves special considerations and risks that are not typically associated with
investments in securities of issuers in the United States or in other more
established markets. Purchasers should carefully assess the risks associated
with an investment in the Fund.
 
This Prospectus sets forth concisely information an investor should know before
investing and should be read carefully and retained for future reference. A
Statement of Additional Information, dated November 1, 1997, has been filed with
the Securities and Exchange Commission ("SEC") and, as supplemented or amended
from time to time, is incorporated herein by reference. The Statement of
Additional Information is available without charge by writing to the Fund at 50
California Street, 27th Floor, San Francisco, California 94111, or by calling
(800) 824-1580. It is also available, along with other related materials, on the
SEC's Internet web site (http://www.sec.gov).
 
FUND SHARES ARE NOT DEPOSITS OR OBLIGATIONS OF, OR ENDORSED OR GUARANTEED BY,
ANY BANK, NOR ARE THEY FEDERALLY INSURED OR OTHERWISE PROTECTED BY THE FEDERAL
DEPOSIT INSURANCE CORPORATION, THE FEDERAL RESERVE BOARD, OR ANY OTHER AGENCY.
 
An investment in the Fund offers the following advantages:
 
/ / Access to Securities Markets Around the World
 
/ / Professional Management by a Leading Manager with Offices in the World's
    Major Markets
 
/ / Automatic Dividend and Other Distribution Reinvestment
 
/ / Exchange Privileges with the Advisor Class of the Other GT Global Mutual
    Funds
 
/ / Portfolio Rebalancing Program
 
FOR FURTHER INFORMATION, CALL
(800) 824-1580 OR CONTACT YOUR FINANCIAL ADVISER.
 
[LOGO]
 
- --------------------------------------------------------------------------------
 
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>
                       GT GLOBAL DEVELOPING MARKETS FUND
 
                               TABLE OF CONTENTS
- ------------------------------------------------------------
 
<TABLE>
<CAPTION>
                                                                                              Page
                                                                                            ---------
<S>                                                                                         <C>
Prospectus Summary........................................................................          3
Financial Highlights......................................................................          6
Investment Objectives and Policies........................................................          7
Risk Factors..............................................................................         12
How to Invest.............................................................................         17
How to Make Exchanges.....................................................................         19
How to Redeem Shares......................................................................         20
Shareholder Account Manual................................................................         22
Calculation of Net Asset Value............................................................         23
Dividends, Other Distributions and Federal Income Taxation................................         23
Management................................................................................         25
Other Information.........................................................................         27
</TABLE>
 
                               Prospectus Page 2
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
 
                               PROSPECTUS SUMMARY
- ------------------------------------------------------------
The following summary is qualified in its entirety by the more detailed
information appearing in the body of this Prospectus.
 
<TABLE>
<S>                            <C>                               <C>
The Fund:                                         The  Fund  is  a non-diversified  series  of  G.T. Investment  Funds,  Inc. (the
                                                  "Company")
 
Investment Objectives:         The Fund's  primary  investment  objective  is  long-term  capital
                               appreciation;  its secondary  objective is  income, to  the extent
                               consistent with seeking capital appreciation.
 
Principal Investments:         The Fund ordinarily invests a  majority of its assets in  emerging
                               market  equity securities and  also may invest  in emerging market
                               debt securities.
 
Principal Risk Factors:        There is no assurance  that the Fund  will achieve its  investment
                               objectives.  The Fund's net asset  value per share will fluctuate,
                               reflecting fluctuations  in  the  market value  of  its  portfolio
                               holdings.
 
                               The  Fund may invest in foreign securities. Investments in foreign
                               securities  involve  risks  relating  to  political  and  economic
                               developments abroad and the differences between the regulations to
                               which  U.S. and  foreign issuers  are subject.  Individual foreign
                               economies also may differ favorably  or unfavorably from the  U.S.
                               economy.  Changes in  foreign currency exchange  rates will affect
                               the Fund's net asset value, earnings and gains and losses realized
                               on sales of  securities. Securities  of foreign  companies may  be
                               less   liquid  and  their  prices  more  volatile  than  those  of
                               securities of comparable U.S. companies. The Fund normally invests
                               all of its assets in issuers in emerging markets. Such investments
                               entail greater  risks  than  investing  in  issuers  in  developed
                               markets.
 
                               The  Fund  may engage  in  certain foreign  currency,  options and
                               futures transactions to attempt to hedge against the overall level
                               of investment and  currency risk  associated with  its present  or
                               planned  investments. Such transactions  involve certain risks and
                               transaction costs.
 
                               The value of debt securities held by the Fund generally fluctuates
                               inversely with interest rate  movements. Certain investment  grade
                               debt  securities may  possess speculative qualities.  The Fund may
                               invest in below investment  grade debt securities. Investments  of
                               this  type are subject to a greater  risk of loss of principal and
                               interest.
 
                               See "Investment Objectives and Policies" and "Risk Factors."
 
Investment Manager:            The Manager is part of  Liechtenstein Global Trust, a provider  of
                               global  asset management and private banking products and services
                               to  individual   and  institutional   investors,  entrusted   with
                               approximately $   billion in total assets as of            , 1997.
                               The Manager and its worldwide asset management affiliates maintain
                               fully  staffed investment offices in Frankfurt, Hong Kong, London,
                               New York, San Francisco, Singapore, Sydney, Tokyo and Toronto. See
                               "Management."
</TABLE>
 
                               Prospectus Page 3
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
 
                               PROSPECTUS SUMMARY
                                  (Continued)
- --------------------------------------------------------------------------------
<TABLE>
<S>                            <C>                               <C>
                               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
Advisor Class Shares:          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 such  account, and  (ii) the  account holder  pays
                               such  person as compensation for its  advice and other services an
                               annual fee of at least .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
                               .50% on the assets in the account; (d) accounts advised by one  of
                               the  companies  composing  or  affiliated  with  the Liechtenstein
                               Global Trust; and (e) any of the companies composing or affiliated
                               with the Liechtenstein Global Trust.
 
Shares Available Through:      Advisor Class  shares of  the Fund's  common stock  are  available
                               through  Financial Advisors (as defined  herein) that have entered
                               into agreements with the Fund's distributor, GT Global, Inc.  ("GT
                               Global")  or certain  of its affiliates.  See "How  to Invest" and
                               "Shareholder Account Manual."
 
Exchange Privileges:           Advisor Class  shares  may only  be  exchanged for  Advisor  Class
                               shares  of  other  GT  Global  Mutual  Funds,  which  are open-end
                               management investment companies advised and/or administered by the
                               Manager. See  "How to  Make  Exchanges" and  "Shareholder  Account
                               Manual."
 
Redemptions:                   Shares  may  be redeemed  through  the Fund's  transfer  agent, GT
                               Global Investor  Services, Inc.  ("Transfer Agent").  See "How  to
                               Redeem Shares" and "Shareholder Account Manual."
 
Dividends and Other            Dividends  from net  investment income and  net short-term capital
  Distributions:               gain, net  capital  gain  and  net  gains  from  foreign  currency
                               transactions, if any, are paid annually.
 
Reinvestment:                  Dividends  and other distributions may be reinvested automatically
                               in Advisor Class shares of the Fund or in Advisor Class shares  of
                               other GT Global Mutual Funds.
 
Net Asset Value:               Advisor  Class shares' net asset values  are expected to be quoted
                               daily in the financial section of most newspapers.
</TABLE>
 
                               Prospectus Page 4
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
 
                               PROSPECTUS SUMMARY
                                  (Continued)
- --------------------------------------------------------------------------------
 
SUMMARY OF INVESTOR COSTS. The expenses and maximum transactions costs
associated with investing in the Advisor Class shares of the Fund are reflected
in the following tables (1):
 
<TABLE>
<CAPTION>
                                                                                                            ADVISOR CLASS
                                                                                                           ----------------
<S>                                                                                                        <C>
SHAREHOLDER TRANSACTION COSTS:
  Maximum sales charge on purchases of shares (as a % of offering price).................................          None
  Sales charges on reinvested distributions to shareholders..............................................          None
  Maximum deferred sales charge (as a % of net asset value at time of purchase or sale, whichever is
    less)................................................................................................          None
  Redemption charges.....................................................................................          None
  Exchange Fees:
    -- On first four exchanges each year.................................................................          None
    -- On each additional exchange.......................................................................     $    7.50
ANNUAL FUND OPERATING EXPENSES (2):
  (AS A % OF AVERAGE NET ASSETS)
  Investment management and administration fees..........................................................          0.98%
  12b-1 distribution and service fees....................................................................          None
  Other expenses.........................................................................................              %
                                                                                                                  -----
Total Fund Operating Expenses (3)........................................................................          1.50%
                                                                                                                  -----
                                                                                                                  -----
</TABLE>
 
HYPOTHETICAL EXAMPLE OF EFFECT OF EXPENSES:
 
An investor would have directly or indirectly paid the following expenses at the
end of the periods shown on a $1,000 investment in the Fund, assuming a 5%
annual return:
 
<TABLE>
<CAPTION>
                                                                                            ONE    THREE   FIVE     TEN
                                                                                            YEAR   YEARS   YEARS   YEARS
                                                                                            ----   -----   -----   -----
<S>                                                                                         <C>    <C>     <C>     <C>
Advisor Class Shares......................................................................  $      $       $       $
</TABLE>
 
- ------------------
(1) THESE TABLES ARE INTENDED TO ASSIST INVESTORS IN UNDERSTANDING THE VARIOUS
    COSTS AND EXPENSES ASSOCIATED WITH INVESTING IN THE FUND. THE "HYPOTHETICAL
    EXAMPLE" IS NOT A REPRESENTATION OF PAST OR FUTURE EXPENSES. THE FUND'S
    ACTUAL EXPENSES MAY BE MORE OR LESS THAN THOSE SHOWN. The tables and the
    assumption in the 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 projected or actual
    performance.
 
(2) Expenses are based on the Fund's fiscal year ended October 31, 1996,
    restated to reflect the Fund's current fees. "Other expenses" include
    custody, transfer agent, legal and audit fees and other operating expenses.
    See "Management" herein and in the Statement of Additional Information for
    more information. 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 Liechtenstein Global Trust invests in Advisor Class shares
    of the Fund, such account shall not be subject to duplicative advisory fees.
 
(3) The Manager and GT Global have voluntarily undertaken to limit the Fund's
    expenses (exclusive of brokerage commissions, taxes, interest and
    extraordinary expenses) to the annual rate of [1.50%] of the average daily
    net assets of the Fund's Advisor Class Shares.
 
                               Prospectus Page 5
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
 
                              FINANCIAL HIGHLIGHTS
 
- --------------------------------------------------------------------------------
 
The table below provides condensed information concerning income and capital
changes for one share of G.T. Global Developing Markets Fund, Inc. (the Fund's
predecessor) for the periods shown. This information is supplemented by the
financial statements and accompanying notes appearing in the Statement of
Additional Information. The financial information in the table below has been
audited by Coopers & Lybrand L.L.P., independent accountants. Prior to        ,
1997, G.T. Global Developing Markets Fund, Inc. was a closed-end registered
investment company whose single class of shares traded on the New York Stock
Exchange, ("NYSE"). On        , 1997, the Fund, which had no previous operating
history, acquired the assets and assumed the liabilities of G.T. Global
Developing Markets Fund, Inc. On that date, all shareholders of G.T. Global
Developing Markets Fund, Inc. received Class A shares of the Fund.
 
                       GT GLOBAL DEVELOPING MARKETS FUND
            (SUCCESSOR TO G.T. GLOBAL DEVELOPING MARKETS FUND, INC.)
   (For the entire period shown, the Fund operated as a closed-end investment
                          company traded on the NYSE)
 
<TABLE>
<CAPTION>
                                                               SIX MONTHS         YEAR ENDED        JANUARY 11, 1994
                                                                  ENDED          DECEMBER 31,        (COMMENCEMENT
                                                              JUNE 30, 1997  --------------------  OF OPERATIONS) TO
                                                               (UNAUDITED)     1996       1995     DECEMBER 31, 1994
                                                              -------------  ---------  ---------  ------------------
<S>                                                           <C>            <C>        <C>        <C>
Per Share Operating Performance:
Net asset value, beginning of period........................                 $   11.60  $   12.44      $    15.00
                                                              -------------  ---------  ---------      ----------
Income from investment operations:
  Net investment income.....................................                      0.53       0.72            0.35
  Net realized and unrealized gain (loss) on investments....                      2.19      (0.84)          (2.46)
                                                              -------------  ---------  ---------      ----------
    Net increase (decrease) from investment operations......                      2.72      (0.12)          (2.11)
                                                              -------------  ---------  ---------      ----------
Distributions to shareholders:
  From net investment income................................                     (0.48)     (0.72)          (0.35)
  From net realized gain on investments.....................                        --         --           (0.10)
                                                              -------------  ---------  ---------      ----------
    Total distributions.....................................                     (0.48)     (0.72)          (0.45)
                                                              -------------  ---------  ---------      ----------
Net asset value, end of period..............................                 $   13.84  $   11.60      $    12.44
                                                              -------------  ---------  ---------      ----------
                                                              -------------  ---------  ---------      ----------
Market value, end of period.................................                 $   11.63  $    9.75      $     9.75
                                                              -------------  ---------  ---------      ----------
                                                              -------------  ---------  ---------      ----------
Total investment return (based on market value).............                     24.18%      6.60%         (32.16)%+
 
Ratios and supplemental data:
Net assets, end of period (in 000's)........................                 $ 504,012  $ 422,348      $  452,872
Ratio of net investment income to average net assets........                      4.07%      6.33%          2.75%++
Ratio of expenses to average net assets:
  With expense reductions...................................                      1.82%      1.77%          2.01%++
  Without expense reductions................................                      1.85%      1.80%          2.01%++
Portfolio turnover rate.....................................                       138%        75%            56%
Average commission rate per share paid on portfolio
 transactions...............................................                 $  0.0022        N/A             N/A
<FN>
- ------------------
</TABLE>
 
+   Not annualized
 
++  Annualized
 
N/A Not Applicable
 
                               Prospectus Page 6
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
 
                             INVESTMENT OBJECTIVES
                                  AND POLICIES
 
- --------------------------------------------------------------------------------
 
The Fund's primary investment objective is long-term capital appreciation; its
secondary objective is income, to the extent consistent with seeking capital
appreciation. The Fund normally invests substantially all of its assets in
issuers in the developing (or "emerging") markets of Asia, Europe, Latin America
and elsewhere. A majority of the Fund's assets ordinarily are invested in
emerging market equity securities. The Fund may invest in the following types of
equity securities: common stock, preferred stock, securities convertible into
common stock, American Depository Receipts ("ADRs"), Global Depository Receipts
("GDRs"), rights and warrants to acquire such securities and substantially
similar forms of equity with comparable risk characteristics. The Fund may also
invest in emerging market debt securities that will be selected based on their
potential to provide a combination of capital appreciation and current income.
 
For purposes of the Fund's operations, emerging markets consist of all countries
determined by the Manager to have developing or emerging economies and markets.
These countries generally include every country in the world except the United
States, Canada, Japan, Australia, New Zealand and most countries located in
Western Europe. See "Investment Objectives and Policies" in the Statement of
Additional Information for a complete list of all the countries that the Fund
does not currently consider to be emerging markets.
 
For purposes of the Fund's policy of normally investing substantially all of its
assets in issuers in emerging markets, the Fund will consider investment in the
following emerging markets:
 
<TABLE>
<S>               <C>            <C>
  Algeria         Hong Kong      Peru
  Argentina       Hungary        Philippines
  Bolivia         India          Poland
  Botswana        Indonesia      Portugal
  Brazil          Israel         Republic of
  Bulgaria        Ivory Coast    Slovakia
  Chile           Jamaica        Russia
  China           Jordan         Singapore
  Colombia        Kazakhstan     Slovenia
  Costa Rica      Kenya          South Africa
  Cyprus          Lebanon        South Korea
  Czech           Malaysia       Sri Lanka
   Republic       Mauritius      Swaziland
  Dominican       Mexico         Taiwan
   Republic       Morocco        Thailand
  Ecuador         Nicaragua      Turkey
  Egypt           Nigeria        Ukraine
  El Salvador     Oman           Uruguay
  Finland         Pakistan       Venezuela
  Ghana           Panama         Zambia
  Greece          Paraguay       Zimbabwe
</TABLE>
 
Although the Fund considers each of the above-listed countries eligible for
investment, it will not be invested in all such markets at all times. Moreover,
investing in some of those markets currently may not be desirable or feasible,
due to the lack of adequate custody arrangements for the Fund's assets, overly
burdensome repatriation and similar restrictions, the lack of organized and
liquid securities markets, unacceptable political risks or for other reasons.
 
As used in this Prospectus, an issuer in an emerging market is an entity (i) for
which the principal securities trading market is an emerging market, as defined
above, (ii) that (alone or on a consolidated basis) derives 50% or more of its
total revenues from business in emerging markets, provided that, in the
Manager's view, the value of such issuer's securities will tend to reflect
emerging market developments to a greater extent than developments elsewhere, or
(iii) organized under the laws of, or with a principal office in, an emerging
market.
 
The Fund invests in those emerging markets that the Manager believes have
strongly developing economies and in which the markets are becoming
 
                               Prospectus Page 7
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
more sophisticated. In selecting investments, the Manager seeks to identify
those countries and industries where economic and political factors, including
currency movements, are likely to produce above-average growth rates. The
Manager then invests in those companies in such countries and industries that it
believes are best positioned and managed to take advantage of these economic and
political factors. The Manager believes that the issuers of securities in
emerging markets often have sales and earnings growth rates that exceed those in
developed countries and that such growth rates may in turn be reflected in more
rapid share price appreciation.
 
As opportunities to invest in securities in other emerging markets develop, the
Fund expects to expand and further broaden the group of emerging markets in
which it invests. In some cases, investments in debt securities could provide
the Fund with access to emerging markets in the early stages of their economic
development, when equity securities are not yet generally available or, in the
Manager's view, do not yet present an acceptable investment alternative. While
the Fund generally is not restricted in the portion of its assets that may be
invested in a single region, under normal conditions its assets will be invested
in issuers in at least four countries, and it will not invest more than 25% of
its assets in issuers in one country. The Fund's holdings of any one foreign
currency together with securities denominated in or indexed to such currency
will not exceed 40% of its assets.
 
INVESTMENTS IN DEBT SECURITIES. The Fund may invest up to 50% of its total
assets in the following types of emerging market debt securities: (1) debt
securities issued or guaranteed by governments, their agencies,
instrumentalities or political subdivisions, or by government owned, controlled
or sponsored entities, including central banks (collectively, "Sovereign Debt"),
including Brady Bonds; (2) interests in issuers organized and operated for the
purpose of restructuring the investment characteristics of Sovereign Debt; (3)
debt securities issued by banks and other business entities; and (iv) debt
securities denominated in or indexed to the currencies of emerging markets. Debt
securities held by the Fund may take the form of bonds, notes, bills,
debentures, bank debt obligations, short-term paper, loan participations,
assignments and interests issued by entities organized and operated for the
purpose of restructuring the investment characteristics of any of the foregoing.
There is no requirement with respect to the maturity or duration of debt
securities in which the Fund may invest.
There is no limitation on the percentage of the Fund's assets that may be
invested in debt securities that are rated below investment grade. Investment in
below investment grade debt securities involves a high degree of risk and can be
speculative. These debt securities are the equivalent of high yield, high risk
bonds, commonly known as "junk bonds." Most debt securities in which the Fund
will invest are not rated; if rated, it is expected that such ratings will be
below investment grade. See "Risk Factors -- Risks Associated with Debt
Securities" and "-- Risks Associated with Below Investment Grade Debt
Securities."
 
The Fund may invest in "Brady Bonds," which are debt restructurings that provide
for the exchange of cash and loans for newly issued bonds. Brady Bonds have been
issued by the countries of, among others, Albania, Argentina, Brazil, Bulgaria,
Costa Rica, Dominican Republic, Ecuador, Ivory Coast, Jordan, Mexico, Nigeria,
Philippines, Poland, Russia, Uruguay, Venezuela and Vietnam, and are expected to
be issued by other emerging market countries. As of the date of this Prospectus,
the Fund is not aware of the occurrence of any payment defaults on Brady Bonds.
Investors should recognize, however, that Brady Bonds have been issued only
recently and, accordingly, do not have a long payment history. In addition,
Brady Bonds are often rated below investment grade.
 
The Fund may invest in either collateralized or uncollateralized Brady Bonds.
U.S. dollar-denominated collateralized Brady Bonds, which may be fixed rate par
bonds or floating rate discount bonds, are collateralized in full as to
principal by U.S. Treasury zero coupon bonds having the same maturity as the
bonds. Interest payments on such bonds generally are collateralized by cash or
securities in an amount that, in the case of fixed rate bonds, is equal to at
least one year of rolling interest payments or, in the case of floating rate
bonds, initially is equal to at least one year's rolling interest payments based
on the applicable interest rate at that time and is adjusted at regular
intervals thereafter.
 
Capital appreciation in debt securities may arise as a result of a favorable
change in relative foreign exchange rates, relative interest rate levels and/or
the creditworthiness of issuers.
 
                               Prospectus Page 8
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
 
ADDITIONAL INVESTMENT POLICIES
 
TEMPORARY DEFENSIVE STRATEGIES. In the interest of preserving shareholders'
capital, the Manager may employ a temporary defensive investment strategy for
the Fund if it determines such a strategy to be warranted due to market,
economic or political conditions. Under a defensive strategy, the Fund may hold
cash (U.S. dollars, foreign currencies or multinational currency units) and/or
invest any portion or all of its assets in high quality money market instruments
of U.S. or foreign issuers. In addition, for temporary defensive purposes, most
or all of the Fund's investments may be made in the United States and
denominated in U.S. dollars. To the extent the Fund adopts a temporary defensive
posture, it will not be invested so as to directly achieve its investment
objectives. In addition, pending investment of proceeds from new sales of Fund
shares or in order to meet ordinary daily cash needs, the Fund may hold cash
(U.S. dollars, foreign currencies or multinational currency units) and may
invest in foreign or domestic high quality money market instruments.
 
BORROWING AND REVERSE REPURCHASE AGREEMENTS. In connection with meeting requests
for the redemption of Fund shares, the Fund may borrow from banks or may borrow
through reverse repurchase agreements. The Fund also may borrow up to 5% of its
total assets for temporary or emergency purposes other than to meet redemptions
but total borrowings may not exceed 33 1/3% of its total assets. However, the
Fund will not purchase securities while borrowings in excess of 5% of its Fund's
total assets are outstanding. Any borrowing by the Fund may cause greater
fluctuation in the value of its shares than would be the case if it did not
borrow.
 
A reverse repurchase agreement is a borrowing transaction in which the Fund
transfers possession of a security to another party, such as a bank or
broker/dealer, in return for cash and agrees to repurchase the security in the
future at an agreed-upon price that includes an interest component.
 
SECURITIES LENDING. The Fund may lend its portfolio securities to broker/dealers
or to other institutional investors. Securities lending allows the Fund to
retain ownership of the securities loaned and, at the same time, earn additional
income that may be used to offset the Fund's custody fees. The Fund limits its
loans of portfolio securities to an aggregate of 30% of the value of its total
assets, measured at the time any such loan is made. While a loan is outstanding
the borrower must maintain with the Fund's custodian collateral consisting of
cash, U.S. government securities or certain irrevocable letters of credit equal
to at least 100% of the value of the borrowed securities plus any accrued
interest or such other collateral as permitted by the Fund's investment program,
regulation/agencies and as approved by the Board. 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 if the borrower fails financially.
 
OPTIONS, FUTURES AND FORWARD CURRENCY TRANSACTIONS. To attempt to increase
return, the Fund may write call options on securities. This strategy will be
employed only when, in the opinion of the Manager, the size of the premium the
Fund receives for writing the option is adequate to compensate it against the
risk that appreciation in the underlying security may not be fully realized if
the option is exercised. The Fund also is authorized to write put options to
attempt to enhance return, although it does not currently intend to do so.
 
The Fund may also use forward currency contracts, futures contracts, options on
securities, options on currencies, options on indices and options on futures
contracts to attempt to hedge against the overall level of investment and
currency risk normally associated with the Fund's investments. These instruments
are often referred to as "derivatives," which may be defined as financial
instruments whose performance is derived, at least in part, from the performance
of another asset (such as a security, currency or an index of securities). The
Fund may enter into such instruments up to the full value of its portfolio
assets. See "Options, Futures and Currency Strategies" in the Statement of
Additional Information.
 
To attempt to hedge against adverse movements in exchange rates between
currencies, the Fund may enter into forward currency contracts for the purchase
or sale of a specified currency at a specified future date. Such contracts may
involve the purchase or sale of a foreign currency against the U.S. dollar or
may involve two foreign currencies. The Fund may enter into forward currency
contracts either with respect to specific transactions or with respect to its
portfolio positions. The Fund also may purchase and sell put and call options on
currencies, futures contracts on currencies and options on such futures
contracts to hedge its portfolio against movements in exchange rates.
 
                               Prospectus Page 9
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
 
Only a limited market, if any, currently exists for options and futures
transactions relating to currencies of most emerging markets, to securities
denominated in such currencies or to securities of issuers domiciled or
principally engaged in business in such emerging markets. To the extent that
such a market does not exist, the Manager may not be able to effectively hedge
its investment in such markets.
 
In addition, the Fund may purchase and sell put and call options on equity and
debt securities to hedge against the risk of fluctuations in the prices of
securities held by the Fund or that the Manager intends to include in the Fund's
portfolio. The Fund also may purchase and sell put and call options on stock
indices to hedge against overall fluctuations in the securities markets or in a
specific market sector.
 
Further, the Fund may sell index futures contracts and may purchase put options
or write call options on such futures contracts to protect against a general
market or a specific market sector decline that could adversely affect the
Fund's portfolio. The Fund also may purchase index futures contracts and
purchase call options or write put options on such contracts to hedge against a
general market or market sector advance and thereby attempt to lessen the cost
of future securities acquisitions. Similarly, the Fund may use interest rate
futures contracts and options thereon to hedge the debt portion of its portfolio
against changes in the general level of interest rates.
 
INVESTMENT IN OTHER INVESTMENT COMPANIES OR VEHICLES. The Fund may be able to
invest in certain countries solely or primarily through governmentally
authorized investment vehicles or companies. Pursuant to the Investment Company
Act of 1940, as amended (the "1940 Act"), the Fund generally may invest up to
10% of its total assets in the aggregate in shares of other investment companies
and up to 5% of its total assets in any one investment company, as long as each
investment does not represent more than 3% of the outstanding voting stock of
the acquired investment company at the time of investment.
 
Investment in other investment companies may involve the payment of substantial
premiums above the value of their portfolio securities and multiple layering of
fees and expenses and is subject to limitations under the 1940 Act and market
availability. The Fund does not intend to invest in other investment companies
unless, in the judgment of the Manager, the potential benefits of such
investment justify the payment of any applicable premium or sales charge. As a
shareholder in another investment company, the Fund would bear its ratable share
of that company's expenses, including its advisory and administration fees. At
the same time the Fund would continue to pay its own management fees and other
expenses.
 
PRIVATIZATIONS. The governments in some emerging markets have been engaged in
programs of selling part or all of their stakes in government owned or
controlled enterprises ("privatizations"). The Manager believes that
privatizations may offer opportunities for significant capital appreciation and
intends to invest assets of the Fund in privatiza-
tions in appropriate circumstances. In certain emerging markets, the ability of
foreign entities such as the Fund to participate in privatizations may be
limited by local law or the terms on which the Fund may be permitted to
participate may be less advantageous than those afforded local investors. There
can be no assurance that governments in emerging markets will continue to sell
companies currently owned or controlled by them or that privatization programs
will be successful.
 
WHEN-ISSUED AND FORWARD COMMITMENT SECURITIES. The Fund may purchase debt
securities on a "when-issued" basis and may purchase or sell such securities on
a "forward commitment" basis in order to hedge against anticipated changes in
interest rates and prices. The price, which is generally expressed in yield
terms, is fixed at the time the commitment is made, but delivery and payment for
the securities take place at a later date. When-issued securities and forward
commitments may be sold prior to the settlement date, but the Fund will purchase
or sell when-issued securities and forward commitments only with the intention
of actually receiving or delivering the securities, as the case may be. No
income accrues on securities that have been purchased pursuant to a forward
commitment or on a when-issued basis prior to delivery to the Fund. If the Fund
disposes of the right to acquire a when-issued security prior to its acquisition
or disposes of its right to deliver or receive against a forward commitment, it
may incur a gain or loss. At the time the Fund enters into a transaction on a
when-issued or forward commitment basis, a segregated account consisting of cash
or liquid securities equal to the value of the when-issued or forward commitment
securities will be established and maintained with the Fund's custodian bank and
will be marked to market daily.
 
                               Prospectus Page 10
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
There is a risk that the securities may not be delivered and that the Fund may
incur a loss.
 
LOAN PARTICIPATIONS AND ASSIGNMENTS. The Fund may invest in fixed and floating
rate loans ("Loans") arranged through private negotiations between a foreign
entity and one or more financial institutions ("Lenders"). The majority of the
Fund's investments in Loans in emerging markets is expected to be in the form of
participations in Loans ("Participations") and assignments of portions of Loans
from third parties ("Assignments"). Participations typically will result in the
Fund having a contractual relationship only with the Lender, not with the
borrower. The Fund will have the right to receive payments of principal,
interest and any fees to which it is entitled only from the Lender selling the
Participation and only upon receipt by the Lender of the payments from the
borrower. In connection with purchasing Participations, the Fund generally will
have no right to enforce compliance by the borrower with the terms of the loan
agreement relating to the loan nor any rights of set-off against the borrower,
and the Fund may not directly benefit from any collateral supporting the Loan in
which it has purchased the Participation. As a result, the Fund will assume the
credit risk of both the borrower and the Lender that is selling the
Participation.
 
In the event of the insolvency of the Lender selling a Participation, the Fund
may be treated as a general creditor of the Lender and may not benefit from any
set-off between the Lender and the borrower. The Fund will acquire
Participations only if the Lender interpositioned between the Fund and the
borrower is determined by the Manager to be creditworthy. When the Fund
purchases Assignments from Lenders, the Fund will acquire direct rights against
the borrower on the Loan. However, because Assignments are arranged through
private negotiations between potential assignees and assignors, the rights and
obligations acquired by the Fund as the purchaser of an Assignment may differ
from, and be more limited than, those held by the assigning Lender.
 
ZERO COUPON SECURITIES. The Fund may invest in certain zero coupon securities
that are "stripped" U.S. Treasury notes and bonds. The Fund also may invest in
zero coupon and other deep discount securities issued by foreign governments and
domestic and foreign corporations, including certain Brady Bonds and other
foreign debt, and in payment-in-kind securities. Zero coupon securities pay no
interest to holders prior to maturity, and payment-in-kind securities pay
"interest" in the form of additional securities. However, a portion of the
original issue discount on zero coupon securities and the interest on
payment-in-kind securities will be included in the Fund's income. Accordingly,
for the Fund to continue to qualify for tax treatment as a regulated investment
company and to avoid a certain excise tax (see "Taxes" in the Statement of
Additional Information), it may be required to distribute an amount that is
greater than the total amount of cash it actually receives. These distributions
must be made from the Fund's cash assets or, if necessary, from the proceeds of
sales of portfolio securities. The Fund will not be able to purchase additional
income-producing securities with cash used to make such distributions, and its
current income ultimately may be reduced as a result. Zero coupon and
payment-in-kind securities usually trade at a deep discount from their face or
par value and will be subject to greater fluctuations of market value in
response to changing interest rates than debt obligations of comparable
maturities that make current distributions of interest in cash.
 
INDEXED COMMERCIAL PAPER. The Fund may invest without limitation in commercial
paper that is indexed to certain specific foreign currency exchange rates. The
terms of such commercial paper provide that its principal amount is adjusted
upwards or downwards (but not below zero) at maturity to reflect changes in the
exchange rate between two currencies while the obligation is outstanding. The
Fund will purchase such commercial paper with the currency in which it is
denominated and, at maturity, will receive interest and principal payments
thereon in that currency, but the amount of principal payable by the issuer at
maturity will change in proportion to the change (if any) in the exchange rate
between the two specified currencies between the date the instrument is issued
and the date the instrument matures. While such commercial paper entails the
risk of loss of principal, the potential for realizing gains as a result of
changes in foreign currency exchange rates enables the Fund to hedge against a
decline in the U.S. dollar value of investments denominated in foreign
currencies while seeking to provide an attractive money market rate of return.
The Fund will not purchase such commercial paper for speculation.
 
OTHER INDEXED SECURITIES. The Fund may invest in certain other indexed
securities, which are securities whose prices are indexed to the prices of other
securities, securities indices, currencies, precious metals or other commodities
or other
 
                               Prospectus Page 11
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
financial indicators. Indexed securities typically, but not always, are debt
securities or deposits whose value at maturity or coupon rate is determined by
reference to a specific instrument or statistic. The performance of indexed
securities depends to a great extent on the performance of the security,
currency or other instrument to which they are indexed and also may be
influenced by interest rate changes in the United States and abroad. At the same
time, indexed securities are subject to the credit risks associated with the
issuer of the security, and their values may decline substantially if the
issuer's creditworthiness deteriorates. Indexed securities may be more volatile
than the underlying instruments. New forms of indexed securities continue to be
developed. The Fund may invest in such securities to the extent consistent with
its investment objectives.
 
OTHER INFORMATION. The Fund's investment objectives may not be changed without
the approval of a majority of its outstanding voting securities. The "majority
of its outstanding voting securities" means the lesser of (i) 67% of the 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 that also may not be changed
without shareholder approval. A complete description of these limitations is
included 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 may be changed by a vote of a majority of the
Company's Board of Directors without shareholder approval. The Fund's policies
regarding lending, and the percentage of Fund assets that may be committed to
borrowing, are fundamental policies and may not be changed without shareholder
approval.
 
- --------------------------------------------------------------------------------
 
                                  RISK FACTORS
 
- --------------------------------------------------------------------------------
 
GENERAL. There is no assurance that the Fund will achieve its investment
objectives. The Fund's net asset value will fluctuate, reflecting fluctuations
in the market value of its portfolio positions. Equity securities, particularly
common stocks, generally represent the most junior position in an issuer's
capital structure and entitle holders to an interest in the assets of an issuer,
if any, remaining after all more senior claims have been satisfied.
 
Investing in the Fund entails a substantial degree of risk and an investment in
the Fund should be considered speculative. Investors are strongly advised to
consider carefully the special risks involved in investing in emerging markets,
which are in addition to the usual risks of investing in developed markets
around the world.
 
NON-DIVERSIFIED CLASSIFICATION. The Fund is classified under the 1940 Act as a
"non-diversified" fund. As a result, the Fund will be able to invest in a
smaller number of issuers than if it was classified under the 1940 Act as a
"diversified" fund. To the extent that the Fund invests in a smaller number of
issuers, the net asset value of its shares may fluctuate more widely and it may
be subject to greater investment and credit risk with respect to its portfolio.
 
FOREIGN INVESTING. Investing in foreign securities entails certain risks. The
securities of non-U.S. issuers generally will not be registered with, nor the
issuers thereof be subject to the reporting requirements of the SEC.
Accordingly, there may be less publicly available information about foreign
securities and issuers than is available about domestic securities and issuers.
Foreign companies generally are not subject to uniform accounting, auditing and
financial reporting standards, practices and requirements comparable to those
applicable to domestic companies. In addition, certain costs attributable to
foreign investing, such as custody charges, are higher than those attributable
to domestic investing. Securities of some foreign companies are less liquid and
their prices may be more volatile than securities of comparable domestic
companies. The Fund's net investment income from foreign issuers may be subject
to non-U.S. withholding taxes, thereby reducing that income.
 
Investing in some foreign countries involves risks relating to potential
political and economic instability within such countries and the risks of
expropriation, nationalization, confiscation of assets and property or the
imposition of restrictions on
 
                               Prospectus Page 12
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
foreign investment and on repatriation of capital invested. In the event of such
expropriation, nationalization or other confiscation, the Fund could lose its
entire investment in that market. Moreover, individual foreign economies may
differ favorably or unfavorably from the U.S. economy in such respects as growth
of gross national product, rate of inflation, rate of savings and capital
reinvestment, currency depreciation, resource self-sufficiency and balance of
payments positions. Investments in foreign government securities involve special
risks, including the risk that the government issuers may be unable or unwilling
to repay principal or interest when due.
 
The Fund will also be affected favorably or unfavorably by exchange control
regulations or changes in the exchange rates between such currencies and the
U.S. dollar. Changes in currency exchange rates will affect the net asset value
of the Fund's shares and also may affect the value of dividends and interest
earned by the Fund and gains and losses realized by it.
 
INVESTING IN EMERGING MARKETS. Emerging markets generally are dependent heavily
upon international trade and, accordingly, have been and may continue to be
affected adversely by trade barriers, exchange controls, managed adjustments in
relative currency values and other protectionist measures imposed or negotiated
by the countries with which they trade. Inflation and rapid fluctuations in
inflation rates have had and may continue to have negative effects on the
economies and securities markets of certain countries with emerging markets.
 
Disclosure and regulatory standards in many respects are less stringent than in
the United States and other major markets. There also may be a lower level of
monitoring and regulation of emerging markets and the activities of investors in
such markets, and enforcement of existing regulations has been extremely
limited.
 
In addition, brokerage commissions, custodial services and other costs relating
to investment in foreign markets generally are more expensive than in the United
States, particularly with respect to emerging markets. Such markets have
different settlement and clearance procedures. In certain markets there have
been times when settlements have been unable to keep pace with the volume of
securities transactions, making it difficult to conduct such transactions. The
inability of the Fund to make intended securities purchases due to settlement
problems could cause it to miss attractive investment opportunities. Inability
to dispose of a portfolio security caused by settlement problems could result
either in losses to the Fund due to subsequent declines in value of the
portfolio security or, if the Fund has entered into a contract to sell the
security, could result in possible liability to the purchaser.
 
The securities markets of emerging countries are substantially smaller, less
developed, less liquid and more volatile than the securities markets of the
developed countries. The risk also exists that an emergency situation may arise
in one or more emerging markets as a result of which trading of securities may
cease or may be substantially curtailed and prices for the Fund's portfolio
securities in such markets may not be readily available. Section 22(e) of the
1940 Act permits a registered investment company, such as the Fund, to suspend
redemption of its shares for any period during which an emergency exists, as
determined by the SEC. Accordingly, when the Fund believes that circumstances
dictate, it will promptly apply to the SEC for a determination that such an
emergency exists. During the period commencing with the Fund's identification of
such conditions until the date of any SEC action, the Fund's portfolio
securities in the affected markets will be valued at fair value determined in
good faith by or under the direction of the Company's Board of Directors.
 
RISKS ASSOCIATED WITH DEBT SECURITIES. The value of the debt securities held by
the Fund generally will vary inversely with market interest rates. If interest
rates in a market fall, the Fund's debt securities issued by governments or
companies in that market ordinarily will increase in value. If market interest
rates increase, however, the debt securities owned by the Fund in that market
will likely decrease in value.
 
RISKS ASSOCIATED WITH BELOW INVESTMENT GRADE DEBT SECURITIES. The Fund normally
may invest up to 50% of its total assets in debt securities rated below
investment grade. Such investments involve a high degree of risk.
 
Debt rated Baa by Moody's Investors Service, Inc. ("Moody's") is considered by
Moody's to have speculative characteristics. Debt rated BB, B, CCC, CC or C by
Standard & Poor's Ratings Group ("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. While such lower quality debt will likely have some
quality and
 
                               Prospectus Page 13
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
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 are also generally
considered to be subject to greater risk than securities with higher ratings
with regard to a deterioration of general economic conditions. These foreign
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 it, such as its inability to meet specific
projected business forecasts or the unavailability of additional financing.
Similarly, certain emerging market governments that issue lower quality debt
securities are among the largest debtors to commercial banks, foreign
governments and supranational organizations such as the World Bank and may not
be able or willing to make principal and/or interest repayments as they come
due. 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 frequently have call or buy-back features that
would permit an issuer to call or repurchase the security from the Fund. In
addition, the Fund 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 the Fund 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 Fund to obtain accurate market quotations for purposes of
valuing its portfolio. The Fund may also acquire lower quality debt securities
during an initial underwriting or that 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 Fund 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.
 
The Fund 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 its portfolio
holdings, and the Fund may have limited legal recourse in the event of a
default. Debt securities issued by governments in emerging markets can differ
from debt obligations issued by private entities in that remedies from defaults
generally must be pursued in the courts of the defaulting government, and legal
recourse is therefore somewhat diminished. Political conditions, in terms of a
government's willingness to meet the terms of its debt obligations, also are of
considerable significance. There can be no assurance that the holders of
commercial bank debt may not contest payments to the holders of debt securities
issued by governments in emerging markets in the event of default by the
governments under commercial bank loan agreements.
 
ILLIQUID SECURITIES. The Fund may invest up to 15% of its net assets 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
 
                               Prospectus Page 14
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
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 restricted securities often sell at a price lower than
similar securities that are not subject to restrictions on resale.
 
CURRENCY RISK. Because the Fund may invest substantially in securities
denominated in currencies other than the U.S. dollar, and since the Fund may
hold foreign currencies, it will be affected favorably or unfavorably by
exchange control regulations or changes in the exchange rates between such
currencies and the U.S. dollar. Changes in currency exchange rates will affect
the net asset value of the Fund's shares and also may affect the value of
dividends and interest earned by the Fund and gains and losses realized by it.
Currencies generally are evaluated on the basis of fundamental economic criteria
(e.g., relative inflation and interest rate levels and trends, growth rate
forecasts, balance of payments status and economic policies) as well as
technical and political data. Exchange rates are determined by the forces of
supply and demand in the foreign exchange markets. These forces are affected by
the international balance of payments and other economic and financial
conditions, government intervention, speculation and other factors. If the
currency in which a security is denominated appreciates against the U.S. dollar,
the dollar value of the security will increase. Conversely, a decline in the
exchange rate of the currency would adversely affect the value of the security
expressed in dollars.
 
Many of the currencies of emerging market countries have experienced steady
devaluations relative to the U.S. dollar, and major devaluations have
historically occurred in certain countries. Any devaluations in the currencies
in which the Fund's portfolio securities are denominated may have a detrimental
impact on the Fund.
 
Some countries also may have fixed currencies whose values against the U.S.
dollar are not independently determined. In addition, there is a risk that
certain countries may restrict the free conversion of their currencies into
other currencies. Further, certain currencies may not be internationally traded.
 
OPTIONS, FUTURES AND FOREIGN CURRENCY TRANSACTIONS. The Fund is authorized to
enter into options, futures and forward currency transactions. These
transactions involve certain risks, which include: (1) dependence on the
Manager's ability to predict movements in the prices of individual securities,
fluctuations in the general securities markets and movements in interest rates
and currency markets; (2) imperfect correlation, or even no correlation, between
movements in the price of forward contracts, options, 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 the 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 a 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
the Fund to sell a security at a disadvantageous time, due to the need for the
Fund to maintain "cover" or to set aside securities in connection with hedging
transactions.
 
LOAN PARTICIPATIONS AND ASSIGNMENTS. The Fund may have difficulty disposing of
Assignments and Participations. The liquidity of such securities is limited, and
the Fund anticipates that such securities could be sold only to a limited number
of institutional investors. The lack of a liquid secondary market could have an
adverse impact on the value of such securities and on the Fund's ability to
dispose of particular Assignments or Participations when necessary to meet its
liquidity needs or in response to a specific economic event, such as a
deterioration in the creditworthiness of the borrower. The lack of a liquid
secondary market for Assignments and Participations also may make it more
difficult for the Fund to assign a value to those securities for purposes of
valuing its portfolio and calculating its net asset value.
 
SOVEREIGN DEBT. The Fund may invest in sovereign debt securities of emerging
market governments, including Brady Bonds. Investments in such securities
involve special risks. The issuer of the debt or the governmental authorities
that control the repayment of the debt may be unable or unwilling to repay
principal or interest when due in accordance with the terms of such debt.
Periods of economic uncertainty may result in the volatility of market prices of
sovereign debt obligations and in turn the Fund's net asset value, to a greater
extent than the volatility inherent in domestic fixed income securities.
 
                               Prospectus Page 15
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
 
A sovereign debtor's willingness or ability to repay principal and pay interest
in a timely manner may be affected by, among other factors, its cash flow
situation, the extent of its foreign reserves, the availability of sufficient
foreign exchange on the date a payment is due, the relative size of the debt
service burden to the economy as a whole, the sovereign debtor's policy toward
principal international lenders and the political constraints to which a
sovereign debtor may be subject. Emerging market governments could default on
their sovereign debt. Such sovereign debtors also may be dependent on expected
disbursements from foreign governments, multilateral agencies and other entities
abroad to reduce principal and interest arrearages on their debt. The commitment
on the part of these governments, agencies and others to make such disbursements
may be conditioned on a sovereign debtor's implementation of economic reforms
and/or economic performance and the timely service of such debtor's obligations.
Failure to implement such reforms, achieve such levels of economic performance
or repay principal or interest when due may result in the cancellation of such
third parties' commitments to lend funds to the sovereign debtor, which may
further impair such debtor's ability or willingness to timely service its debts.
 
The occurrence of political, social or diplomatic changes in one or more of the
countries issuing sovereign debt could adversely affect the Fund's investments.
Emerging markets are faced with social and political issues, and some of them
have experienced high rates of inflation in recent years and have extensive
internal debt. Among other effects, high inflation and internal debt service
requirements may adversely affect the cost and availability of future domestic
sovereign borrowing to finance governmental programs and may have other adverse
social, political and economic consequences. Political changes or a
deterioration of a country's domestic economy or balance of trade may affect its
willingness to service its sovereign debt. Although the Manager intends to
manage the Fund in a manner that will minimize the exposure to such risks, there
can be no assurance that adverse political changes will not cause the Fund to
suffer a loss of interest or principal on any of its holdings.
 
In recent years, some of the emerging market countries in which the Fund expect
to invest have encountered difficulties in servicing their sovereign debt
obligations. Some of these countries have withheld payments of interest and/or
principal of sovereign debt. These difficulties have also led to agreements to
restructure external debt obligations -- in particular, commercial bank loans --
typically by rescheduling principal payments, reducing interest rates and
extending new credits to finance interest payments on existing debt. In the
future, holders of emerging market sovereign debt securities may be requested to
participate in similar rescheduling of such debt. Certain emerging market
countries are among the largest debtors to commercial banks and foreign
governments. Currently, Brazil, Mexico and Argentina are the largest debtors
among developing countries. At times certain emerging market countries have
declared moratoria on the payment of principal and interest on external debt;
such a moratorium is currently in effect in certain emerging market countries.
There is no bankruptcy proceeding by which a creditor may collect in whole or in
part sovereign debt on which an emerging market government has defaulted.
 
The ability of emerging market governments to make timely payments on their
sovereign debt securities is likely to be influenced strongly by a country's
balance of trade and its access to trade and other international credits. A
country whose exports are concentrated in a few commodities could be vulnerable
to a decline in the international prices of one or more of such commodities.
Increased protectionism on the part of a country's trading partners could also
adversely affect its exports. Such events could diminish a country's trade
account surplus, if any. To the extent that a country receives payment for its
exports in currencies other than hard currencies, its ability to make hard
currency payments could be affected.
 
Investors should also be aware that certain sovereign debt instruments in which
the Fund may invest involve great risk. As noted above, sovereign debt
obligations issued by emerging market governments generally are deemed to be the
equivalent in terms of quality to securities rated below investment grade by
Moody's and S&P. Such securities are regarded as predominantly speculative with
respect to the issuer's capacity to pay interest and repay principal in
accordance with the terms of the obligations and involve major risk exposure to
adverse conditions. Some of such securities, with respect to which the issuer
currently may not be paying interest or may be in payment default, may be
comparable to securities rated D by S&P or C by Moody's. The Fund may have
difficulty disposing of and valuing certain sovereign debt obligations because
there may be a limited trading market for such securities. Because there is no
liquid secondary
 
                               Prospectus Page 16
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
market for many of these securities, the Fund anticipates that such securities
could be sold only to a limited number of dealers or institutional investors.
 
- --------------------------------------------------------------------------------
 
                                 HOW TO INVEST
 
- --------------------------------------------------------------------------------
 
GENERAL. 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 such account, and (ii) the account holder pays such person as
compensation for its advice and other services an annual fee of at least .50% on
the assets in the account ("Advisory 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 .50% on the assets in the account ("Wrap Fee Account"); (d) accounts
advised by one of the companies composing or affiliated with Liechtenstein
Global Trust; and (e) any of the companies composing or affiliated with
Liechtenstein Global Trust. Financial planners, trust companies, bank trust
companies and registered investment advisers referenced in subpart (b) and
sponsors of "wrap fee" programs referenced in subpart (c) are collectively
referred to as "Financial Advisors." Investors in Wrap Fee Accounts and Advisory
Accounts may only purchase Advisor Class shares through Financial Advisors who
have entered into agreements with GT Global and certain of its affiliates.
Investors may be charged a fee by their agents or brokers if they effect
transactions other than through a dealer.
 
All purchase orders will be executed at the public offering price next
determined after the purchase order is received. Orders received by GT Global
before the close of regular trading on the NYSE (currently 4:00 P.M. Eastern
time, unless weather, equipment failure or other factors contribute to an
earlier closing time) on any Business Day will be executed at the public
offering price for the applicable class of shares determined that day. A
"Business Day" is any day Monday through Friday on which the NYSE is open for
business. THE FUND AND GT GLOBAL RESERVE THE RIGHT TO REJECT ANY PURCHASE ORDER
AND TO SUSPEND THE OFFERING OF SHARES FOR A PERIOD OF TIME. In particular, the
Fund and GT Global may reject purchase orders or exchanges by investors who
appear to follow, in the Manager's judgment, a market-timing strategy or
otherwise engage in excessive trading. See "How to Make Exchanges -- Limitations
on Purchase Orders and Exchanges."
 
Fiduciaries and Financial Advisors may be required to provide information
satisfactory to GT Global concerning their eligibility to purchase Advisor Class
shares. For specific information on opening an account, please contact your
Financial Advisor or GT Global.
 
PURCHASE BY BANK WIRE. Shares of the Fund may also be purchased through GT
Global by bank wire. Bank wire purchases will be effected at the next determined
public offering price after the bank wire is received. A wire investment is
considered received when the Transfer Agent is notified that the bank wire has
been credited to the Fund. Prior telephonic or facsimile notice that a bank wire
is being sent must be provided to the Transfer Agent. A bank may charge a
service fee for wiring money to the Fund. The Transfer Agent currently does not
charge a service fee for facilitating wire purchases, but reserves the right to
do so in the future. For more information, please refer to the Shareholder
Account Manual in this Prospectus.
 
CERTIFICATES. Physical certificates representing the Fund's shares will not be
issued unless a written request is submitted to the Transfer Agent. Shares of
the Fund are recorded on a register by the Transfer Agent, and shareholders who
do not elect to receive certificates have the same rights of ownership as if
certificates had been issued to them. Redemptions and exchanges by shareholders
who hold certificates may take longer to effect than similar transactions
involving non-certificated shares because the physical delivery and processing
of properly executed certificates is required. ACCORDINGLY, THE FUND AND GT
GLOBAL RECOMMEND THAT SHAREHOLDERS DO NOT REQUEST ISSUANCE OF CERTIFICATES.
 
                               Prospectus Page 17
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
 
PORTFOLIO REBALANCING PROGRAM. The GT Global Portfolio Rebalancing Program
("Program") permits eligible shareholders to establish and maintain an
allocation across a range of GT Global Mutual Funds. The Program automatically
rebalances holdings of GT Global Mutual 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, GT Global Mutual Funds ("Personal Portfolio") is to
be rebalanced on a monthly, quarterly, semiannual, or annual basis.
 
Rebalancing under the Program will be effected through the exchange of shares of
one or more GT Global Mutual Funds in the shareholders' Personal Portfolio for
shares of the same class of one or more other GT Global Mutual Funds in the
shareholder's Personal Portfolio. See "How to Make Exchanges." If shares of the
Funds in a shareholder's Personal Portfolio have appreciated during a
rebalancing period, the Program will result in shares of Fund(s) that have
appreciated most during the period being exchanged for shares of 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 TAX PURPOSES.
See "Dividends, Other Distributions and Federal Income Taxation." 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 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 a Fund's shares. Exchanges made
under the Program are not subject to the four free exchanges per year
limitation. The Funds and GT Global 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 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 broker/ dealers may
charge a fee for establishing accounts relating to the Program. Investors should
contact their broker/dealers or GT Global for more information.
 
                               Prospectus Page 18
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
 
                             HOW TO MAKE EXCHANGES
 
- --------------------------------------------------------------------------------
 
Advisor Class shares of the Fund may be exchanged for Advisor Class shares of
any of the other GT Global Mutual Funds, based on their respective net asset
values, provided that the registration remains identical. EXCHANGES ARE NOT
TAX-FREE AND MAY RESULT IN A SHAREHOLDER'S REALIZING A GAIN OR LOSS, AS THE CASE
MAY BE, FOR TAX PURPOSES. See "Dividends, Other Distributions and Federal Income
Taxation." In addition to the Fund, the GT Global Mutual Funds currently
include:
 
   -- GT GLOBAL AMERICA SMALL CAP GROWTH FUND
   -- GT GLOBAL AMERICA MID CAP GROWTH FUND
   -- GT GLOBAL AMERICA VALUE FUND
   -- GT GLOBAL CONSUMER PRODUCTS AND
       SERVICES FUND
   -- GT GLOBAL DOLLAR FUND
   -- GT GLOBAL EMERGING MARKETS FUND
   -- GT GLOBAL EUROPE GROWTH FUND
   -- GT GLOBAL FINANCIAL SERVICES FUND
   -- GT GLOBAL GOVERNMENT INCOME FUND
   -- GT GLOBAL GROWTH & INCOME FUND
   -- GT GLOBAL HEALTH CARE FUND
   -- GT GLOBAL HIGH INCOME FUND
   -- GT GLOBAL INFRASTRUCTURE FUND
   -- GT GLOBAL INTERNATIONAL GROWTH FUND
   -- GT GLOBAL JAPAN GROWTH FUND
   -- GT GLOBAL LATIN AMERICA GROWTH FUND
   -- GT GLOBAL NATURAL RESOURCES FUND
   -- GT GLOBAL NEW DIMENSION FUND
   -- GT GLOBAL NEW PACIFIC GROWTH FUND
   -- GT GLOBAL STRATEGIC INCOME FUND
   -- GT GLOBAL TELECOMMUNICATIONS FUND
   -- GT GLOBAL WORLDWIDE GROWTH FUND
 
Up to four exchanges each year may be made without charge. A $7.50 service
charge will be imposed on each subsequent exchange. Exchange requests received
in good order by the Transfer Agent before the close of regular trading on the
NYSE on any Business Day will be processed at the net asset value calculated on
that day. The terms of the exchange offer may be modified at any time, on 60
days' prior written notice.
 
EXCHANGES BY TELEPHONE. A shareholder may give exchange instructions to his or
her Financial Advisor. Exchange orders will be accepted by telephone provided
that the exchange involves only uncertificated shares on deposit in the
shareholder's account or for which certificates previously have been deposited.
 
Shareholders automatically have telephone privileges to authorize exchanges. The
Fund, GT Global and the Transfer Agent will not be liable for any loss or damage
for acting in good faith upon instructions received by telephone and reasonably
believed to be genuine. The Fund employs reasonable procedures to confirm that
instructions communicated by telephone are genuine prior to acting upon
instructions received by telephone, including requiring some form of personal
identification, providing written confirmation of such transactions, and/or tape
recording of telephone instructions.
 
Investors in Wrap Fee Accounts and Advisory Accounts interested in making an
exchange should contact their Financial Advisors to request the prospectuses of
the other GT Global Mutual Fund(s) being considered. Other investors should
contact GT Global. See the Shareholder Account Manual in this Prospectus.
 
LIMITATIONS ON PURCHASE ORDERS AND EXCHANGES. The GT Global Mutual Funds are not
intended to serve as vehicles for frequent trading in response to short-term
fluctuations in the market. Due to the disruptive effect that market-timing
investment strategies and excessive trading can have on efficient portfolio
management, each GT Global Mutual Fund and GT Global reserves the right to
refuse purchase orders and exchanges by any person or group, if, in the
Manager's judgment, such person or group was following a market-timing strategy
or was otherwise engaging in excessive trading.
 
In addition, each GT Global Mutual Fund and GT Global reserves the right to
refuse purchase orders and exchanges by any person or group if, in the Manager's
judgment, the Fund would not be able to invest the money effectively in
accordance with that Fund's investment objective and policies or would otherwise
potentially be adversely affected. Although a GT Global Mutual Fund will attempt
to give investors prior notice whenever it is reasonably able to do so, it may
impose the above restrictions at any time.
 
Finally, as described above, each GT Global Mutual Fund and GT Global reserve
the right to reject any purchase order.
 
                               Prospectus Page 19
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
 
                              HOW TO REDEEM SHARES
 
- --------------------------------------------------------------------------------
 
Fund shares may be redeemed at their net asset value and redemption proceeds
will be sent within seven days of the execution of a redemption request.
 
Redemption requests may be transmitted to the Transfer Agent by telephone or by
mail, in accordance with the instructions provided in the Shareholder Account
Manual. Redemptions will be effected at the net asset value next determined
after the Transfer Agent has received the request and any required supporting
documentation. Redemption requests will not require a signature guarantee if the
redemption proceeds are to be sent either: (i) to the redeeming shareholder at
the shareholder's address of record as maintained by the Transfer Agent,
provided the shareholder's address of record has not been changed within the
preceding thirty days; or (ii) directly to a pre-designated bank, savings and
loan or credit union account ("Pre-Designated Account"). ALL OTHER REDEMPTION
REQUESTS MUST BE ACCOMPANIED BY A SIGNATURE GUARANTEE OF THE REDEEMING
SHAREHOLDER'S SIGNATURE. A signature guarantee can be obtained from any bank,
U.S. trust company, a member firm of a U.S. stock exchange or a foreign branch
of any of the foregoing or other eligible guarantor institutions. A notary
public is not an acceptable guarantor.
 
Shareholders with Pre-Designated Accounts should request that redemption
proceeds be sent either by bank wire or by check. The minimum redemption amount
for a bank wire is $1,000. Shareholders requesting a bank wire should allow two
business days from the time the redemption request is effected for the proceeds
to be deposited in the shareholder's Pre-Designated Account. See "How to Redeem
Shares -- Other Important Redemption Information." Shareholders may change their
Pre-Designated Accounts only by a letter of instruction to the Transfer Agent
containing all account signatures, each of which must be guaranteed. The
Transfer Agent currently does not charge a bank wire service fee for each wire
redemption sent but reserves the right to do so in the future. The shareholder's
bank may charge a bank wire service fee.
 
REDEMPTIONS BY TELEPHONE. Redemption requests may be made by telephone by
calling the Transfer Agent at the appropriate toll free number provided in the
Shareholder Account Manual. Shareholders who hold certificates for shares may
not redeem by telephone. REDEMPTION REQUESTS MAY NOT BE MADE BY TELEPHONE FOR
THIRTY DAYS FOLLOWING ANY CHANGE OF THE SHAREHOLDER'S ADDRESS OF RECORD.
 
Shareholders automatically have telephone privileges to authorize redemptions.
The Fund, GT Global and the Transfer Agent shall not be liable for any loss or
damage for acting in good faith upon instructions received by telephone and
reasonably believed to be genuine. The Fund employs reasonable procedures to
confirm that instructions communicated by telephone are genuine prior to acting
upon instructions received by telephone, including requiring some form of
personal identification, providing written confirmation of such transactions,
and/or tape recording of telephone instructions.
 
REDEMPTIONS BY MAIL. Redemption requests should be mailed directly to the
Transfer Agent at the appropriate address provided in the Shareholder Account
Manual. As discussed above, requests for payment of redemption proceeds to a
party other than the shareholder of record and/or requests that redemption
proceeds be mailed to an address other than the shareholder's address of record
require a signature guarantee. In addition, if the shareholder's address of
record has been changed within the preceding thirty days, a signature guarantee
is required. Redemptions of shares for which certificates have been issued must
be accompanied by properly endorsed share certificates.
 
OTHER IMPORTANT REDEMPTION INFORMATION. A request for redemption will not be
processed until all of the necessary documentation has been received in good
order. A shareholder in a Wrap Fee Account or Advisory Account who is in doubt
as to what documents are required should contact his Financial Advisor.
 
Except in extraordinary circumstances and as permitted under the 1940 Act,
payment for shares
 
                               Prospectus Page 20
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
redeemed by telephone or in writing will be made promptly after receipt of a
redemption request, if in good order, but not later than seven days after the
date the request is executed. Requests for redemption which are subject to any
special conditions or which specify a future or past effective date cannot be
accepted.
 
If the Transfer Agent is requested to redeem shares for which the Fund has not
yet received good payment, the Fund may delay payment of redemption proceeds
until it has assured itself that good payment has been collected for the
purchase of the shares. In the case of purchases by check it can take up to 10
business days to confirm that the check has cleared and good payment has been
received. Redemption proceeds will not be delayed when shares have been paid for
by wire or when the investor's account holds a sufficient number of shares for
which funds already have been collected.
 
GT Global reserves the right to redeem the shares of any Advisory Account or
Wrap Fee Account if the amount invested in GT Global Mutual Funds through such
account is reduced to less than $500 through redemptions or other action by the
shareholder. Written notice will be given to the shareholder at least 60 days
prior to the date fixed for such redemption, during which time the shareholder
may increase the amount invested in GT Global Mutual Funds through such account
to an aggregate amount of $500 or more.
 
For more information on how to redeem Fund shares, see the Shareholder Account
Manual in this Prospectus, or contact your Financial Advisor.
 
                               Prospectus Page 21
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
 
                           SHAREHOLDER ACCOUNT MANUAL
 
- --------------------------------------------------------------------------------
 
Purchase, exchange and redemption orders should be placed in accordance with
this Manual. It is recommended that investors in Wrap Fee Accounts and Advisory
Accounts make such orders through their Financial Advisor. INVESTORS SHOULD
REFERENCE "ADVISOR CLASS" IN ALL INSTRUCTIONS PROVIDED. See "How to Invest";
"How to Make Exchanges"; "How to Redeem Shares"; and "Dividends, Other
Distributions and Federal Income Taxation" for more information.
 
The Fund's Transfer Agent is GT GLOBAL INVESTOR SERVICES, INC.
 
INVESTMENTS BY MAIL
 
Send completed Account Application (if initial purchase) or letter stating Fund
name, class of shares, shareholder's registered name and account number (if
subsequent purchase) with a check to:
 
    GT Global
    P.O. Box 7345
    San Francisco, California 94120-7345
 
INVESTMENTS BY BANK WIRE
 
A new account may be opened by calling 1-800-223-2138 to obtain an account
number. WITHIN SEVEN DAYS OF PURCHASE A COMPLETED ACCOUNT APPLICATION CONTAINING
THE INVESTOR'S CERTIFIED TAXPAYER IDENTIFICATION NUMBER MUST BE SENT TO GT
GLOBAL AT THE ADDRESS PROVIDED ABOVE UNDER "INVESTMENTS BY MAIL." Wire
instructions must state Fund name, class of shares, shareholder's registered
name and account number. Bank wires should be sent through the Federal Reserve
Bank Wire System to:
 
    WELLS FARGO BANK N.A.
    ABA 121000248
    Attn: GT GLOBAL
         Account No. 4023-050701
 
EXCHANGES BY TELEPHONE
 
Call GT Global at 1-800-223-2138
 
EXCHANGES BY MAIL
 
Send complete instructions, including name of Fund exchanging from, class of
shares, amount of exchange, name of the GT Global Mutual Fund exchanging into,
shareholder's registered name and account number, to:
 
    GT Global
    P.O. Box 7893
    San Francisco, California 94120-7893
 
REDEMPTIONS BY TELEPHONE
 
Call GT Global at 1-800-223-2138
 
REDEMPTIONS BY MAIL
 
Send complete instructions, including name of Fund, class of shares, amount of
redemption, shareholder's registered name and account number, to:
 
    GT Global
    P.O. Box 7893
    San Francisco, California 94120-7893
 
OVERNIGHT MAIL
 
Overnight mail services do not deliver to post office boxes. To send purchase,
exchange or redemption orders by overnight mail, comply with the above
instructions but send to the following:
 
    GT Global Investor Services, Inc.
    California Plaza
    2121 N. California Boulevard
    Suite 450
    Walnut Creek, California 94596
 
ADDITIONAL QUESTIONS
 
Shareholders with additional questions regarding purchase, exchange and
redemption procedures may call GT Global at 1-800-223-2138.
 
                               Prospectus Page 22
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
 
                         CALCULATION OF NET ASSET VALUE
 
- --------------------------------------------------------------------------------
 
The Fund calculates its net asset value as of the close of regular trading on
the NYSE (currently 4:00 p.m. Eastern time, unless weather, equipment failure or
other factors contribute to an earlier closing time) each Business Day. The
Fund's net asset value per share is computed by determining the value of its
total assets (the securities it holds plus any cash or other assets, including
dividends and interest accrued but not yet received), subtracting all of its
liabilities (including accrued expenses), and dividing the result by the total
number of shares outstanding. Net asset value is determined separately for each
class of the Fund's shares.
 
Equity securities are valued at the last sale price on the exchange or in the
over-the-counter market in which the securities are primarily traded, as of the
close of business on the day the securities are being valued or, lacking any
sales, at the last available bid price. Long-term obligations are valued at the
mean of representative quoted bid and asked prices for the securities or, if
such prices are not available, at prices for securities of comparable maturity,
quality and type; however, when the Manager deems it appropriate, prices
obtained from a bond pricing service will be used. Short-term debt investments
are amortized to maturity based on their cost, adjusted for foreign exchange
translation and market fluctuations, provided such valuations represent fair
value. When market quotations for futures and options positions held by the Fund
are readily available, those positions are valued based upon such quotations.
 
Securities and other assets for which market quotations are not readily
available are valued at fair value determined in good faith by or under the
direction of the Company's Board of Directors. Securities and other assets
quoted in foreign currencies are valued in U.S. dollars based on the prevailing
exchange rates on that day.
 
The Fund's portfolio securities, from time to time, may be listed primarily on
foreign exchanges or over-the-counter dealer markets that trade on days when the
NYSE is closed (such as a Saturday). As a result, the net asset value of the
Fund may be significantly affected by such trading on days when shareholders
cannot purchase or redeem Fund shares.
 
- --------------------------------------------------------------------------------
 
                         DIVIDENDS, OTHER DISTRIBUTIONS
                          AND FEDERAL INCOME TAXATION
 
- --------------------------------------------------------------------------------
 
DIVIDENDS AND OTHER DISTRIBUTIONS. The Fund declares and pays as a dividend all
of its net investment income, if any, which includes dividends, accrued interest
and earned discount (including both original issue and market discounts) less
applicable expenses. The Fund also annually distributes substantially all of its
realized net capital gains and net gains from foreign currency transactions, if
any. The Fund may make an additional dividend or other distribution if necessary
to avoid a 4% excise tax on certain undistributed income and gain.
 
Dividends and other distributions paid by the Fund with respect to all classes
of its shares are calculated in the same manner and at the same time. The per
share income dividends on Advisor Class shares will be higher than the per share
income dividends on other classes of the Fund's shares as a result of the
service and distribution fees applicable to those other shares. SHAREHOLDERS MAY
ELECT:
 
/ / to have all dividends and other distributions automatically reinvested in
    additional Advisor Class shares of the Fund (or other GT Global Mutual
    Funds); or
 
/ / to receive dividends in cash and have other distributions automatically
    reinvested in additional Advisor Class shares of the Fund (or other GT
    Global Mutual Funds); or
 
                               Prospectus Page 23
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
 
/ / to receive other distributions in cash and have dividends automatically
    reinvested in additional Advisor Class shares of the Fund (or other GT
    Global Mutual Funds); or
 
/ / to receive dividends and other distributions in cash.
 
Automatic reinvestments in additional Advisor Class shares are made at net asset
value without imposition of a sales charge. IF NO ELECTION IS MADE BY A
SHAREHOLDER, ALL DIVIDENDS AND OTHER DISTRIBUTIONS WILL BE AUTOMATICALLY
REINVESTED IN ADDITIONAL ADVISOR CLASS SHARES OF THE FUND. Reinvestments in
another GT Global Mutual Fund may only be directed to an account with the
identical shareholder registration and account number. These elections may be
changed by a shareholder at any time; to be effective with respect to a
distribution, the shareholder or the shareholder's broker must contact the
Transfer Agent by mail or telephone at least 15 Business Days prior to the
payment date. THE FEDERAL INCOME TAX CONSEQUENCES OF DIVIDENDS AND OTHER
DISTRIBUTIONS ARE THE SAME WHETHER THEY ARE RECEIVED IN CASH OR REINVESTED IN
ADDITIONAL SHARES.
 
Any dividend or other distribution paid by the Fund has the effect of reducing
the net asset value per share on the ex-distribution date by the amount thereof.
Therefore, a dividend or other distribution paid shortly after a purchase of
shares would represent, in substance, a return of capital to the shareholder (to
the extent the distribution is paid on the shares so purchased), even though
subject to income tax, as discussed below.
 
TAXES. The Fund intends to continue to qualify for treatment as a regulated
investment company under the Code. In each taxable year that the Fund so
qualifies, the Fund (but not its shareholders) will be relieved of federal
income tax on that part of its investment company taxable income (consisting
generally of net investment income, net gains from certain foreign currency
transactions and net short-term capital gain) and net capital gain (i.e., the
excess of net long-term capital gain over net short-term capital loss) that is
distributed to its shareholders.
 
Dividends from the Fund's investment company taxable income (whether paid in
cash or reinvested in additional shares) are taxable to its shareholders as
ordinary income to the extent of its earnings and profits. Distributions of the
Fund's net capital gain when designated as such, are taxable to its shareholders
as long-term capital gain, regardless of how long they have held their Fund
shares and whether paid in cash or reinvested in additional shares.
The Taxpayer Relief Act of 1997 ("Act"), enacted in August 1997, dramatically
changes the taxation of net capital gain, by applying different rates thereto
depending on the taxpayer's holding period and marginal rate of federal income
tax. The Act, however, does not address the application of these rules to
distributions by regulated investment companies and instead authorizes the
issuance of regulations to do so. Accordingly, shareholders should consult their
tax advisers as to the effect of the Act on distributions by the Fund to them of
net capital gain.
 
The Fund provides federal tax information to its shareholders annually,
including information about dividends and other distributions paid during the
preceding year and, under certain circumstances, the shareholders' respective
shares of any foreign taxes paid by the Fund, in which event each shareholder
would be required to include in his or her gross income his or her pro rata
share of those taxes but might be entitled to claim a credit or deduction for
them.
 
The Fund must withhold 31% from dividends, capital gain distributions and
redemption proceeds payable to any individuals and certain other noncorporate
shareholders who have not furnished to the Fund a correct taxpayer
identification number or a properly completed claim for exemption on Form W-8 or
W-9. Withholding at that rate also is required from dividends and capital gain
distributions payable to such shareholders who otherwise are subject to backup
withholding. Fund accounts opened via a bank wire purchase (see "How to Invest
- -- Purchases Through the Distributor") are considered to have uncertified
taxpayer identification numbers unless a completed Form W-8 or W-9 or Account
Application is received by the Transfer Agent within seven days after the
purchase. A shareholder should contact the Transfer Agent if the shareholder is
uncertain whether a proper taxpayer identification number is on file with the
Fund.
 
A redemption of the Fund shares may result in taxable gain or loss to the
redeeming shareholder, depending upon whether the redemption proceeds are more
or less than the shareholder's adjusted basis for the redeemed shares. An
exchange of Fund shares for shares of another GT Global Mutual Fund generally
will have similar tax consequences. In addition, if Fund shares are purchased
within 30 days before or after
 
                               Prospectus Page 24
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
redeeming other Fund shares (regardless of class) at a loss, all or a part of
the loss will not be deductible and instead will increase the basis of the newly
purchased shares.
 
The foregoing is only a summary of some of the important federal tax
considerations generally affecting the Fund and its shareholders. See "Taxes" in
the Statement of Additional Information for a further discussion. There may be
other federal, state, local or foreign tax considerations applicable to a
particular investor. Prospective investors therefore are urged to consult their
tax advisers.
 
- --------------------------------------------------------------------------------
 
                                   MANAGEMENT
 
- --------------------------------------------------------------------------------
 
The Company's Board of Directors has overall responsibility for the operation of
the Fund. Pursuant to such responsibility, the Board has approved contracts with
various financial organizations to provide, among other things, day to day
management services required by the Fund. See "Directors and Executive Officers"
in the Statement of Additional Information for a complete description of the
Directors of the Company.
 
INVESTMENT MANAGEMENT AND ADMINISTRATION. Services provided by Chancellor LGT
Asset Management, Inc. (the "Manager") as the Fund's investment manager and
administrator include determining the composition of the Fund's portfolio and
placing orders to buy, sell or hold particular securities; furnishing corporate
officers and clerical staff; providing office space, services and equipment; and
supervising all matters relating to the Fund's operation. For these services,
the Fund pays the Manager investment management and administration fees,
computed daily and paid monthly, based on its average daily net assets, at the
annualized rate of .975% on the first $500 million, .95% on the next $500
million, .925% on the next $500 million and .90% on amounts thereafter. This
rate is higher than that paid by most mutual funds. The Manager and GT Global
have undertaken to limit the Fund's expenses (exclusive of brokerage
commissions, taxes, interest and extraordinary expenses) to the annual rate of
1.50% of the average daily net assets of the Fund's Advisor Class Shares. This
undertaking may be changed or eliminated in the future.
 
The Manager also serves as the Fund's pricing and accounting agent. For these
services the Manager receives a fee at an annual rate derived by applying 0.03%
to the first $5 billion of assets of GT Global Mutual Funds and 0.02% to the
assets in excess of $5 billion, and allocating the result according to the
Fund's average daily net assets.
 
The Manager provides investment management and/or administration services to the
GT Global Mutual Funds. The Manager and its worldwide asset management
affiliates have provided investment management and/or administration services to
institutional, corporate and individual clients around the world since 1969. The
U.S. offices of the Manager are located at 50 California Street, 27th Floor, San
Francisco, CA 94111, and 1166 Avenue of the Americas, New York, NY 10036.
 
The Manager and its worldwide affiliates, including LGT Bank in Liechtenstein,
formerly Bank in Liechtenstein, compose Liechtenstein Global Trust, formerly BIL
GT Group Limited. Liechtenstein Global Trust is a provider of global asset
management and private banking products and services to individual and
institutional investors. Liechtenstein Global Trust is controlled by the Prince
of Liechtenstein Foundation, which serves as a parent organization for the
various business enterprises of the Princely Family of Liechtenstein. The
principal business address of the Prince of Liechtenstein Foundation is
Herrengasse 12, FL-9490, Vaduz, Liechtenstein.
 
As of             , 1996, the Manager and its worldwide asset management
affiliates managed approximately $62 billion. In the United States, as of
            , 1996, the Manager managed or administered approximately $  billion
of GT Global Mutual Funds. As of             , 1996, assets entrusted to
Liechtenstein Global Trust totaled approximately $  billion.
 
In addition to the investment resources of its San Francisco and New York
offices, the Manager draws upon the expertise, personnel, data and systems of
other offices of Liechtenstein Global Trust, including investment offices in
Frankfurt, Hong Kong, London, Singapore, Sydney, Tokyo, and Toronto. In managing
the GT Global Mutual
 
                               Prospectus Page 25
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
Funds, the Manager employs a team approach, taking advantage of its investment
resources around the world in seeking to achieve the Fund's investment
objective. Many of the GT Global Mutual Funds' portfolio managers are natives of
the countries in which they invest, speak local languages and/or live or work in
the markets they follow.
 
The investment professionals primarily responsible for the portfolio management
of the Fund are as follows:
 
<TABLE>
<CAPTION>
                                 RESPONSIBILITIES                             BUSINESS EXPERIENCE
       NAME/OFFICE                 FOR THE FUND                                 PAST FIVE YEARS
- --------------------------  --------------------------  ---------------------------------------------------------------
<S>                         <C>                         <C>
Allan Conway                Portfolio Manager since     Mr. Conway joined Chancellor LGT Asset Management, Inc. (the
 London                      1997                        "Manager") and LGT Asset Management PLC (London), an affiliate
                                                         of the Manager, in January 1997 as Head of Global Emerging
                                                         Markets. Based in London, he manages a centralized team of
                                                         global emerging market fund managers. From 1992 to 1997, Mr.
                                                         Conway was Director of International Equities at Hermes
                                                         Investment Management, and from 1982 to 1992 was a Portfolio
                                                         Manager, and eventually overall Head of Overseas Equities, at
                                                         Provident Mutual.
 
Michael Mabbutt             Portfolio Manager since     Mr. Mabbutt joined Chancellor LGT Asset Management, Inc. (the
                             1997                        "Manager") and LGT Asset Management PLC (London), an affiliate
                                                         of the Manager, in December 1996. He was appointed Head of
                                                         Global Emerging Market Debt for the Manager in April 1997.
                                                         Prior to joining the Manager, he was a Senior Portfolio
                                                         Manager for global fixed income at Baring Asset Management in
                                                         London from 1992 to 1996. At Baring Asset Management, he was
                                                         responsible for developing the emerging market debt process as
                                                         head of the five member Emerging Market Fixed Income Strategy
                                                         Group.
 
Cheng-Hock Lau              Portfolio Manager since     Mr. Lau has been Chief Investment Officer for Developed Market
                             1997                        Debt for the Manager since November 1996, and was a Senior
                                                         Portfolio Manager for global/international fixed income for
                                                         the Manager from July 1995 to November 1996. Mr. Lau was a
                                                         Senior Vice President and Senior Portfolio Manager for
                                                         Fiduciary Trust Company International from 1993 to 1995, and
                                                         Vice President at Bankers Trust Company from 1991 to 1993.
</TABLE>
 
In placing securities orders for the Fund's portfolio transactions, the Manager
seeks to obtain the best net results. Consistent with its obligation to obtain
the best net results, the Manager may consider a broker/dealer's sale of shares
of the GT Global Mutual Funds as a factor in considering through whom portfolio
transactions will be effected. Brokerage transactions may be executed through
affiliates of Liechtenstein Global Trust.
 
DISTRIBUTION OF FUND SHARES. GT Global is the distributor of the Fund's Advisor
Class shares. GT Global is a subsidiary of Liechtenstein Global Trust with
offices at 50 California Street, 27th Floor, San Francisco, California 94111.
 
The Manager or an affiliate thereof may make ongoing payments to Financial
Advisors and others that facilitate the administration and servicing of Advisor
Class shareholder accounts.
 
GT Global, at its own expense, may provide promotional incentives to brokers
that sell shares of the Fund and/or shares of the other GT Global Mutual Funds.
In some instances compensation or promotional incentives may be offered to
brokers that have sold or may sell significant amounts of shares during
specified periods of time. Such compensation and incentives may include, but are
not limited to, cash, merchandise, trips and financial assistance to
broker/dealers in connection with preapproved conferences or seminars, sales or
 
                               Prospectus Page 26
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
training programs for invited sales personnel, payment for travel expenses
(including meals and lodging) incurred by sales personnel and members of their
families or other invited guests to various locations for such seminars or
training programs, seminars for the public, advertising and sales campaigns
regarding one or more of the GT Global Mutual Funds, and/or other events
sponsored by the broker.
 
The Glass-Steagall Act and other applicable laws, among other things, generally
prohibit federally chartered or supervised banks from engaging in the business
of underwriting or distributing securities. Accordingly, GT Global intends to
engage banks (if at all) only to perform administrative and shareholder
servicing functions. Banks and broker/ dealer affiliates of banks may also
execute dealer agreements with GT Global for the purpose of selling shares of
the Fund. If a bank were prohibited from so acting, its shareholder clients
would be permitted to remain shareholders, and alternative means for continuing
the servicing of such shareholders would be sought. It is not expected that
shareholders would suffer any adverse financial consequences as a result of any
of these occurrences.
 
- --------------------------------------------------------------------------------
 
                               OTHER INFORMATION
 
- --------------------------------------------------------------------------------
 
CONFIRMATIONS AND REPORTS TO SHAREHOLDERS. Each time a transaction is made that
affects a shareholder's account in the Fund, the shareholder will receive from
the Transfer Agent a confirmation statement reflecting the transaction.
Confirmations for transactions effected pursuant to the Fund's automatic
dividend reinvestment program may be provided quarterly. Shortly after the end
of the Fund's fiscal year on October 31 and fiscal half-year on April 30 of each
year, shareholders receive an annual and semiannual report, respectively. In
addition, the federal income tax status of distributions made by the Fund to
shareholders is reported after the end of each calendar year on Form 1099-DIV.
Under certain circumstances, duplicate mailings of the foregoing reports to the
same household may be consolidated.
 
ORGANIZATION OF THE COMPANY. The Company was organized as a Maryland corporation
on October 29, 1987. From time to time, the Company has established and may
continue to establish other funds, each corresponding to a distinct investment
portfolio and a distinct series of the Company's common stock. Shares of the
Fund are entitled to one vote per share (with proportional voting for fractional
shares) and are freely transferable. Shareholders have no preemptive or
conversion rights.
 
On any matter submitted to a vote of shareholders, shares of the Fund will be
voted by the Fund's shareholders individually when the matter affects the
specific interest of the Fund only, such as approval of its investment
management arrangements. In addition, each class of shares of the Fund has
exclusive voting rights with respect to its distribution plan. The shares of the
Company's funds will be voted in the aggregate on other matters, such as the
election of Directors and ratification of the Board of Directors' selection of
the Company's independent accountants.
 
Normally there will be no annual meeting of shareholders in any year, except as
required under the 1940 Act. The Company would be required to hold a
shareholders' meeting in the event that at any time less than a majority of the
Directors holding office had been elected by shareholders. Directors shall
continue to hold office until their successors are elected and have qualified.
Shares of the Company's funds do not have cumulative voting rights, which means
that the holders of a majority of the shares voting for the election of
Directors can elect all the Directors. A Director may be removed upon a majority
vote of the shareholders qualified to vote in the election. Shareholders holding
10% of the Company's outstanding voting securities may call a meeting of
shareholders for the purpose of voting upon the question of removal of any
Director or for any other purpose. The 1940 Act requires the Company to assist
shareholders in calling such a meeting.
 
The Fund offers Advisor Class shares through this prospectus to certain
investors. The Fund also offers Class A shares and Class B shares to investors
through a separate prospectus. Each class of shares will experience different
net asset values and dividends as a result of different expenses borne by
 
                               Prospectus Page 27
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
each class of shares. The per share net asset value and dividends of the Advisor
Class shares of the Fund generally will be higher than that of the Class A and B
shares of the Fund because of the higher expenses borne by the Class A and B
shares. The per share dividends on Advisor Class shares of the Fund will
generally be higher than the per share dividends on Class A and B shares of the
Fund as a result of the service and distribution fees applicable with respect to
Class A and B shares. Consequently, during comparable periods, the Fund expects
that the total return on an investment in shares of the Advisor Class will be
higher than the total return on Class A or Class B shares.
 
Pursuant to the Company's Articles of Incorporation, it may issue six billion
shares. Of this number, 300 million shares have been classified as shares of the
Fund; 100 million shares have been classified as Class A shares of the Fund, 100
million shares have been classified as Class B shares of the Fund, and 100
million shares have been classified as Advisor Class shares of the Fund. This
amount may be increased from time to time in the discretion of the Board of
Directors. Each share of the Fund represents an interest in the Fund only, has a
par value of $0.0001 per share, represents an equal proportionate interest in
the Fund with other shares of the Fund 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
Directors. Each Class A, Class B and Advisor Class share of the Fund is equal as
to earnings, assets and voting privileges, except as noted above, and each class
bears the expenses, if any, related to the distribution of its shares. Shares of
the Fund when issued are fully paid and nonassessable.
 
SHAREHOLDER INQUIRIES. Shareholder inquiries may be made by calling the Fund
toll free at (800) 223-2138 or by writing to the Fund at P.O. Box 7893, San
Francisco, California 94120-7893.
 
PERFORMANCE INFORMATION. The Fund, from time to time, may include information on
its investment results and/or comparisons of its investment results to various
unmanaged indices or results of other mutual funds or groups of mutual funds in
advertisements, sales literature or reports furnished to present or prospective
shareholders.
 
In such materials, the Fund may quote its average annual total return
("Standardized Return"). Standardized Return is calculated separately for each
class of shares of the Fund. Standardized Return shows percentage rates
reflecting the average annual change in the value of an assumed investment in
the Fund at the end of one-, five- and ten-year periods, reduced by the maximum
applicable sales charge imposed on sales of Fund shares. If a one-, five- and/or
ten-year period has not yet elapsed, data will be provided as of the end of a
shorter period corresponding to the life of the Fund. Standardized Return
assumes reinvestment of all dividends and other distributions.
 
In addition, in order to more completely represent the Fund's performance or
more accurately compare such performance to other measures of investment return,
the Fund also may include in advertisements, sales literature and shareholder
reports other total return performance data ("Non-Standardized Return").
Non-Standardized return reflects percentage rates of return encompassing all
elements of total return (e.g., income and capital appreciation or
depreciation); it assumes reinvestment of all dividends and other distributions.
Non-Standardized Return may be quoted for the same or different periods as those
for which Standardized Return is quoted; it may consist of an aggregate or
average annual percentage rate of return, actual year-by-year rates or any
combination thereof. Non-Standardized Return may or may not take sales charges
into account; performance data calculated without taking the effect of sales
charges into account will be higher than data including the effect of such
charges.
 
The Fund's performance data reflects past performance and is not necessarily
indicative of future results. The Fund's investment results will vary from time
to time depending upon market conditions, the composition of its portfolio and
its operating expenses. These factors and possible differences in calculation
methods should be considered when comparing the Fund's investment results with
those published for other investment companies, other investment vehicles and
unmanaged indices. The Fund's results also should be considered relative to the
risks associated with its investment objective and policies. See "Investment
Results" in the Statement of Additional Information.
 
The Fund's annual report contains additional information with respect to its
performance. The annual report is available to investors upon request and free
of charge.
 
TRANSFER AGENT. Shareholder servicing, reporting and general transfer agent
functions for the Fund
 
                               Prospectus Page 28
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
are performed by GT Global Investor Services, Inc. The Transfer Agent is an
affiliate of the Manager and GT Global and a subsidiary of Liechtenstein Global
Trust, and maintains its offices at California Plaza, 2121 North California
Boulevard, Suite 450, Walnut Creek, California 94596.
 
CUSTODIAN. State Street Bank and Trust Company, 225 Franklin Street, Boston,
Massachusetts 02110 is custodian of the Fund's assets.
 
COUNSEL. The law firm of Kirkpatrick & Lockhart LLP, 1800 Massachusetts Avenue,
N.W., Washington, D.C. 20036-1800, acts as counsel to the Company and the Fund.
Kirkpatrick & Lockhart LLP also acts as counsel to the Manager, GT Global and
the Transfer Agent in connection with other matters.
 
INDEPENDENT ACCOUNTANTS. The Company's and the Fund's independent accountants
are Coopers & Lybrand L.L.P., One Post Office Square, Boston, Massachusetts
02109. Coopers & Lybrand L.L.P. conducts an annual audit of the Fund, assists in
the preparation of the Fund's federal and state income tax returns and consults
with the Company and the Fund as to matters of accounting, regulatory filings,
and federal and state income taxation.
 
MULTIPLE TRANSLATIONS OF THE PROSPECTUS. This Prospectus may be translated into
other languages. In the event of any inconsistency or ambiguity as to the
meaning of any word or phrase contained in a translation, the English text shall
prevail.
 
                               Prospectus Page 29
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
 
                                     NOTES
 
- --------------------------------------------------------------------------------
 
                               Prospectus Page 30
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
 
                                     NOTES
 
- --------------------------------------------------------------------------------
 
                               Prospectus Page 31
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
 
                                     NOTES
 
- --------------------------------------------------------------------------------
 
                               Prospectus Page 32
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
 
                             GT GLOBAL MUTUAL FUNDS
 
  GT GLOBAL OFFERS A BROAD RANGE OF MUTUAL FUNDS TO COMPLEMENT MANY INVESTORS'
  PORTFOLIOS.  FOR MORE INFORMATION  AND A PROSPECTUS ON  ANY GT GLOBAL MUTUAL
  FUND, INCLUDING FEES, EXPENSES AND THE  RISKS OF GLOBAL AND EMERGING  MARKET
  INVESTING  AND THE RISKS OF INVESTING  IN RELATED INDUSTRIES, PLEASE CONTACT
  YOUR FINANCIAL ADVISER OR CALL GT GLOBAL DIRECTLY AT 1-800-824-1580.
 
GROWTH FUNDS
 
/ / GLOBALLY DIVERSIFIED FUNDS
 
GT GLOBAL WORLDWIDE GROWTH FUND
Invests around the world, including the U.S.
 
GT GLOBAL INTERNATIONAL GROWTH FUND
Provides portfolio diversity by investing outside
the U.S.
 
GT GLOBAL EMERGING MARKETS FUND
Gives access to the growth potential of developing economies
 
GT GLOBAL DEVELOPING MARKETS FUND
Invests in debt and equity securities of developing market issuers
 
GT GLOBAL NEW DIMENSION FUND
Captures global growth themes by investing directly in the six GT Global Theme
Funds
 
/ / GLOBAL THEME FUNDS
 
GT GLOBAL CONSUMER PRODUCTS AND
SERVICES FUND
Invests in companies that manufacture, market, retail, or distribute consumer
products or services
 
GT GLOBAL FINANCIAL SERVICES FUND
Focuses on the worldwide opportunities from the demand for financial services
and products
 
GT GLOBAL HEALTH CARE FUND
Invests in growing health care industries worldwide
 
GT GLOBAL INFRASTRUCTURE FUND
Seeks companies that build, improve or maintain a country's infrastructure
 
GT GLOBAL NATURAL RESOURCES FUND
Concentrates on companies that own, explore or develop natural resources
 
GT GLOBAL TELECOMMUNICATIONS FUND
Invests in companies worldwide that develop, manufacture or sell
telecommunications services or equipment
 
/ / REGIONALLY DIVERSIFIED FUNDS
 
GT GLOBAL NEW PACIFIC GROWTH FUND
Offers access to the emerging and established markets of the Pacific Rim,
excluding Japan
 
GT GLOBAL EUROPE GROWTH FUND
Focuses on investment opportunities in the new, unified Europe
 
GT GLOBAL LATIN AMERICA GROWTH FUND
Invests in the emerging markets of Latin America
 
/ / SINGLE COUNTRY FUNDS
 
GT GLOBAL AMERICA SMALL CAP GROWTH FUND
Invests in equity securities of small U.S. companies
 
GT GLOBAL AMERICA MID CAP GROWTH FUND
Concentrates on medium-sized companies in the U.S.
 
GT GLOBAL AMERICA VALUE FUND
Concentrates on equity securities of large cap U.S. companies believed to be
undervalued
 
GT GLOBAL JAPAN GROWTH FUND
Provides U.S. investors with direct access to the Japanese market
 
GROWTH AND INCOME FUND
 
GT GLOBAL GROWTH & INCOME FUND
Invests in blue-chip stocks and government bonds from around the world
 
INCOME FUNDS
 
GT GLOBAL GOVERNMENT INCOME FUND
Earns monthly income from global government securities
 
GT GLOBAL STRATEGIC INCOME FUND
Allocates its assets among debt securities from the U.S., developed foreign
countries and emerging markets
 
GT GLOBAL HIGH INCOME FUND
Invests in debt securities in emerging markets
 
GT GLOBAL FLOATING RATE FUND
Invests primarily in senior secured floating rate loans that have the potential
to achieve a high level of current income
 
MONEY MARKET FUND
 
GT GLOBAL DOLLAR FUND
Invests in high quality, U.S. dollar-denominated money market securities
worldwide for stability and preservation of capital
 
[LOGO]
 
  NO DEALER, SALES REPRESENTATIVE OR OTHER PERSON HAS BEEN AUTHORIZED TO  GIVE
  ANY  INFORMATION  OR  TO  MAKE  ANY  REPRESENTATION  NOT  CONTAINED  IN THIS
  PROSPECTUS AND, IF GIVEN  OR MADE, SUCH  INFORMATION OR REPRESENTATION  MUST
  NOT BE RELIED UPON AS HAVING BEEN AUTHORIZED BY G.T. INVESTMENT FUNDS, INC.,
  GT  GLOBAL DEVELOPING MARKETS FUND, CHANCELLOR LGT ASSET MANAGEMENT, INC. OR
  GT GLOBAL, INC.  THIS PROSPECTUS  DOES NOT CONSTITUTE  AN OFFER  TO SELL  OR
  SOLICITATION OF ANY OFFER TO BUY ANY OF THE SECURITIES OFFERED HEREBY IN ANY
  JURISDICTION TO ANY PERSON TO WHOM IT IS UNLAWFUL TO MAKE SUCH OFFER IN SUCH
  JURISDICTION.
                                                                 GROPV703 MC
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
 
                        50 California Street, 27th Floor
                        San Francisco, California 94111
                                 (415) 392-6181
                           Toll Free: (800) 824-1580
                      Statement of Additional Information
                                November 1, 1997
 
- --------------------------------------------------------------------------------
 
This  Statement of  Additional Information  relates to the  Class A  and Class B
shares of  GT  Global  Developing Markets  Fund  (the  "Fund"). The  Fund  is  a
non-diversified  series  of  G.T.  Investment  Funds,  Inc.  (the  "Company"), a
registered open-end management investment company. This Statement of  Additional
Information,  which  is not  a  prospectus, supplements  and  should be  read in
conjunction with  the  Fund's current  Class  A  and Class  B  Prospectus  dated
November  1, 1997, a copy of which is available without charge by writing to the
above address or by  calling the Fund at  the toll-free telephone number  listed
above.
 
Chancellor  LGT  Asset Management,  Inc. (the  "Manager")  serves as  the Fund's
investment manager and administrator. The distributor of the Fund's shares is GT
Global, Inc. ("GT  Global"). The  Fund's transfer  agent is  GT Global  Investor
Services, Inc. ("GT Services" or the "Transfer Agent").
 
- --------------------------------------------------------------------------------
 
                               TABLE OF CONTENTS
 
- --------------------------------------------------------------------------------
 
<TABLE>
<CAPTION>
                                                                                                                           Page No.
                                                                                                                           --------
<S>                                                                                                                        <C>
Investment Objectives and Policies.......................................................................................      2
Options, Futures and Currency Strategies.................................................................................      7
Risk Factors.............................................................................................................     15
Investment Limitations...................................................................................................     21
Execution of Portfolio Transactions......................................................................................     22
Directors and Executive Officers.........................................................................................     25
Management...............................................................................................................     27
Valuation of Fund Shares.................................................................................................     28
Information Relating to Sales and Redemptions............................................................................     29
Taxes....................................................................................................................     30
Additional Information...................................................................................................     34
Investment Results.......................................................................................................     35
Description of Debt Ratings..............................................................................................     41
Financial Statements.....................................................................................................     43
</TABLE>
 
[LOGO]
 
                   Statement of Additional Information Page 1
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
 
                           INVESTMENT OBJECTIVES AND
                                    POLICIES
 
- --------------------------------------------------------------------------------
 
INVESTMENT OBJECTIVES
The  primary investment objective of the Fund is long-term capital appreciation.
Its secondary  investment objective  is income,  to the  extent consistent  with
seeking capital appreciation. The Fund normally invests substantially all of its
assets  in issuers  in the developing  (or "emerging") markets  of Asia, Europe,
Latin America and elsewhere. The Fund does not consider the following  countries
to  be emerging markets: Australia,  Austria, Belgium, Canada, Denmark, England,
Finland, France, Germany, Ireland, Italy,  Japan, the Netherlands, New  Zealand,
Norway,  Spain, Sweden, Switzerland and the  United States. In determining which
countries constitute emerging  markets, the Manager  will consider, among  other
thing, data, analysis, and classification of countries published or disseminated
by  the International Bank for Reconstruction and Development (commonly known as
the World Bank) and the International Finance Corporation ("IFC").
 
SELECTION OF EQUITY INVESTMENTS
For investment  purposes, an  issuer is  typically considered  as located  in  a
particular  country  if it  (a) is  incorporated under  the laws  of or  has its
principal office in that country, or (b) it normally derives 50% or more of  its
total  revenue from  business in that  country. However, these  are not absolute
requirements, and certain  companies incorporated  in a  particular country  and
considered  by the Manager  to be located  in that country  may have substantial
off-shore operations or subsidiaries and/or  export sales exceeding in size  the
assets or sales in that country.
 
In  determining  the  appropriate  distribution  of  investments  among  various
countries and geographic regions for the Fund, the Manager ordinarily  considers
the  following  factors:  prospects  for  relative  economic  growth  among  the
different countries in which the Fund may invest; expected levels of  inflation;
government  policies influencing  business conditions; the  outlook for currency
relationships;  and  the  range  of  the  individual  investment   opportunities
available to international investors.
 
In  analyzing  companies in  emerging markets  for investment  by the  Fund, the
Manager ordinarily looks for  one or more of  the following characteristics:  an
above-average  earnings  growth  per  share; high  return  on  invested capital;
healthy balance  sheet;  sound financial  and  accounting policies  and  overall
financial  strength;  strong  competitive  advantages;  effective  research  and
product development  and  marketing;  efficient  service;  pricing  flexibility;
strength  of management; and general operating characteristics which will enable
the companies  to  compete successfully  in  their respective  marketplaces.  In
certain countries, governmental restrictions and other limitations on investment
may  affect the maximum percentage of equity ownership in any one company by the
Fund. 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.
 
Although  the Fund values  its assets daily  in terms of  U.S. dollars, the Fund
does not intend to convert its holdings of foreign currencies into U.S.  dollars
on a daily basis. The Fund 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  are buying and selling
various currencies. Thus, a dealer may offer  to sell a foreign currency to  the
Fund  at one  rate, while  offering a  lesser rate  of exchange  should the Fund
desire to sell that currency to the dealer.
 
The Fund may be prohibited under the Investment Company Act of 1940, as  amended
("1940 Act"), from purchasing the securities of any foreign company that, in its
most  recent  fiscal year,  derived more  than  15% of  its gross  revenues from
securities-related activities ("securities-related companies").  In a number  of
countries,   commercial  banks  act  as  securities  broker/dealers,  investment
advisers and underwriters or otherwise engage in securities-related  activities,
which  may limit the Fund's ability to hold securities issued by such banks. The
Fund has  obtained an  exemption  from the  Securities and  Exchange  Commission
("SEC") to permit it to invest in certain of these securities subject to certain
restrictions.
 
INVESTMENTS IN OTHER INVESTMENT COMPANIES
The  Fund may invest in the securities of investment companies within the limits
of the 1940 Act. These limitations currently provide that, in general, the  Fund
may  purchase  shares  of a  closed-end  investment  company unless  (a)  such a
purchase would cause the Fund to own in the aggregate more than 3 percent of the
total outstanding voting stock of the
 
                   Statement of Additional Information Page 2
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
investment company or (b) such a purchase would cause the Fund to have more than
5 percent of its total assets invested in the investment company or more than 10
percent of its  total assets  invested in an  aggregate of  all such  investment
companies.  Investment in such investment companies may also involve the payment
of substantial premiums above the value of such companies' portfolio securities.
The Fund does not intend to invest  in such investment companies unless, in  the
judgment  of the Manager, 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.
 
DEPOSITORY RECEIPTS
The Fund may hold equity 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 issuers. These  securities may  not necessarily be  denominated in  the
same  currency as the securities for which  they may be exchanged. ADRs and ADSs
typically are 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 United States securities markets and EDRs in bearer
form  are designed for use  in European securities markets.  For purposes of the
Fund's investment policies, the Fund'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
Fund may invest in both sponsored and unsponsored ADRs.
 
WARRANTS OR RIGHTS
Warrants or  rights  may  be acquired  by  the  Fund in  connection  with  other
securities  or separately and provide  the Fund with the  right to purchase at a
later date other securities of the issuer.
 
Warrants  are  securities  permitting,  but  not  obligating,  their  holder  to
subscribe  for other securities or commodities.  Warrants do not carry with them
the right to dividends or voting rights with respect to the securities that they
entitle their holder to purchase,  and they do not  represent any rights in  the
assets  of the issuer. As a result,  warrants may be considered more speculative
than certain other  types of investments.  In addition, the  value of a  warrant
does  not necessarily change with  the value of the  underlying securities and a
warrant ceases to  have value if  it is  not exercised prior  to its  expiration
date.
 
LENDING OF PORTFOLIO SECURITIES
For  the purpose of realizing additional income, the Fund may make secured loans
of portfolio securities  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 continuously be 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 Fund  may pay  reasonable
administrative  and custodial fees  in connection with  loans of its securities.
While the securities loan is outstanding, the Fund 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.
The   Fund   will   have  a   right   to   call  each   loan   and   obtain  the
 
                   Statement of Additional Information Page 3
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
securities on five business days'  notice. The Fund will  not have the right  to
vote  equity  securities while  they are  lent, but  it  may call  in a  loan in
anticipation of any important vote. Loans will  be made only to firms deemed  by
the  Manager to be of good standing and will not be made unless, in the judgment
of the Manager, the consideration to be earned from such loans would justify the
risk.
 
COMMERCIAL BANK OBLIGATIONS
For the  purposes  of  the  Fund'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, however,  may be  limited by  the terms  of a  specific
obligation  and  by  government  regulation.  As  with  investment  in  non-U.S.
securities in general,  investments in  the obligations of  foreign branches  of
U.S.  banks and of foreign  banks may subject the  Fund to investment risks that
are different  in some  respects from  those of  investments in  obligations  of
domestic  issuers. Although the  Fund typically will  acquire obligations issued
and supported by the credit of U.S. or foreign banks having total assets at  the
time  of purchase  in excess  of $1 billion,  this $1  billion figure  is not an
investment policy or restriction  of the Fund. 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 the Fund purchases a  security
from a bank or recognized securities dealer and simultaneously commits to resell
that  security to the bank  or dealer at an agreed  upon price, date, and market
rate of  interest unrelated  to the  coupon rate  or maturity  of the  purchased
security. 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 Fund if the other party
to  the repurchase  agreement becomes bankrupt,  the Fund intends  to enter into
repurchase agreements only  with banks and  dealers believed by  the Manager  to
present  minimum credit risks  in accordance with  guidelines established by the
Company's  Board  of  Directors.  The  Manager  will  review  and  monitor   the
creditworthiness of such institutions under the Board's general supervision.
 
The  Fund 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, the Fund would
suffer a loss.  If the financial  institution which is  party to the  repurchase
agreement petitions for bankruptcy or otherwise becomes subject to bankruptcy or
other  liquidation proceedings, there may be  restrictions on the Fund's ability
to sell the collateral and the Fund  could suffer a loss. However, with  respect
to  financial  institutions  whose  bankruptcy  or  liquidation  proceedings are
subject to the U.S. Bankruptcy Code, the Fund intends to comply with  provisions
under  the U.S. Bankruptcy  Code that would  allow it immediately  to resell the
collateral. There is no limitation on the  amount of the Fund's assets that  may
be  subject to repurchase agreements at any  given time. The Fund will not enter
into a repurchase agreement  with a maturity  of more than seven  days if, as  a
result,  more than 10% of the value of  its net assets would be invested in such
repurchase agreements and other illiquid investments.
 
BORROWING AND REVERSE REPURCHASE AGREEMENTS
The Fund's borrowings will not exceed 33 1/3% of the Fund's total assets,  i.e.,
the  Fund's total assets at all times will  equal at least 300% of the amount of
outstanding borrowings.  If  market fluctuations  in  the value  of  the  Fund's
portfolio  holdings or other factors cause the  ratio of the Fund's total assets
to outstanding  borrowings to  fall  below 300%,  within three  days  (excluding
Sundays  and holidays) of such event the  Fund may be required to sell portfolio
securities to restore the  300% asset coverage, even  though from an  investment
standpoint  such sales might be disadvantageous. The  Fund also may borrow up to
5% of its total assets  for temporary or emergency  purposes other than to  meet
redemptions.  Any borrowing  by the  Fund may  cause greater  fluctuation in the
value of its shares than would be the case if the Fund did not borrow.
 
The Fund's fundamental investment  limitations permit the  Fund to borrow  money
for leveraging purposes. The Fund, however, currently is 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 a vote  of
a  majority of  the Company's  Board of  Directors. In  the event  that the Fund
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 Fund's net  asset value. When the
income and gains on securities purchased with the proceeds of borrowings  exceed
the  costs  of such  borrowings, the  Fund's  earnings or  net asset  value will
increase faster than otherwise would be the case; conversely, if such income and
gains fail to exceed such  costs, the Fund's earnings  or net asset value  would
decline faster than would otherwise be the case.
 
The  Fund may  enter into  reverse repurchase  agreements. A  reverse repurchase
agreement is a borrowing transaction in which the Fund transfers possession of a
security to another party, such as a  bank or broker/dealer in return for  cash,
and
 
                   Statement of Additional Information Page 4
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
agrees  to repurchase the security in the  future at an agreed upon price, which
includes an interest component. The Fund will maintain, in a segregated  account
with a custodian, cash or liquid securities in an amount sufficient to cover its
obligations   under  reverse  repurchase   agreements  with  broker/dealers.  No
segregation is required for reverse repurchase agreements with banks.
 
SHORT SALES
The Fund is authorized  to make short  sales of securities,  although it has  no
current  intention of doing so. A short sale  is a transaction in which the Fund
sells a security  in anticipation that  the market price  of that security  will
decline.  The Fund  may make  short sales  (i) as  a form  of hedging  to offset
potential declines  in long  positions  in securities  it owns,  or  anticipates
acquiring,  and (ii)  in order to  maintain portfolio flexibility.  The Fund may
only make short sales "against the box." In this type of short sale, at the time
of the sale the Fund  owns the security it has  sold short or has the  immediate
and unconditional right to acquire the identical security at no additional cost.
 
In a short sale, the seller does not immediately deliver the securities sold and
does  not receive the proceeds from the sale. To make delivery to the purchaser,
the executing broker borrows  the securities being sold  short on behalf of  the
seller. The seller is said to have a short position in the securities sold until
it  delivers the securities sold, at which  time it receives the proceeds of the
sale. To secure its obligation to  deliver securities sold short, the Fund  will
deposit  in  a  separate account  with  its  custodian an  equal  amount  of the
securities sold short or  securities convertible into  or exchangeable for  such
securities  at no cost. The Fund could  close out a short position by purchasing
and delivering an  equal amount  of the securities  sold short,  rather than  by
delivering  securities already held by the Fund,  because the Fund might want to
continue to  receive  interest  and  dividend  payments  on  securities  in  its
portfolio that are convertible into the securities sold short.
 
The  Fund might make  a short sale "against  the box" in  order to hedge against
market risks when the Manager believes that the price of a security may decline,
causing a decline in  the value of a  security owned by the  Fund or a  security
convertible  into or  exchangeable for such  security. In such  case, any future
losses in the  Fund's long position  should be reduced  by a gain  in the  short
position.  Conversely, any gain in the long position should be reduced by a loss
in the short  position. The extent  to which such  gains or losses  in the  long
position  are reduced will depend  upon the amount of  the securities sold short
relative to  the amount  of the  securities the  Fund owns,  either directly  or
indirectly, and, in the case where the Fund owns convertible securities, changes
in  the investment values or conversion  permiums of such securities. There will
be certain additional transaction costs associated with short sales "against the
box," but the  Fund will endeavor  to offset  these costs with  income from  the
investment of the cash proceeds of short sales.
 
YANKEE BONDS
The  Fund may invest in U.S. dollar-denominated  bonds sold in the United States
by non-U.S.  issuers ("Yankee  bonds"). As  compared with  bonds issued  in  the
United  States, such bond issues  normally carry a higher  interest rate but are
less actively traded.
 
TEMPORARY DEFENSIVE STRATEGIES
The Fund may invest  in the following types  of money market instruments  (i.e.,
debt  instruments with less than 12 months remaining until maturity) denominated
in U.S. dollars or other currencies: (a) obligations issued or guaranteed by the
U.S.   or   foreign   governments,   their   agencies,   instrumentalities    or
municipalities;  (b)  obligations  of  international  organizations  designed or
supported  by  multiple  foreign  governmental  entities  to  promote   economic
reconstruction  or  development;  (c)  finance  company  obligations,  corporate
commercial  paper  and  other   short-term  commercial  obligations;  (d)   bank
obligations  (including certificates of deposit,  time deposits, demand deposits
and bankers'  acceptances);  (e)  repurchase  agreements  with  respect  to  the
foregoing;  and (f) other substantially  similar short-term debt securities with
comparable characteristics.
 
The Fund may invest  in commercial paper rated  as low as A-3  by S&P or P-3  by
Moody's or, if not rated, determined by the Manager to be of comparable quality.
Obligations  rated A-3 and P-3 are  considered by S&P and Moody's, respectively,
to have an acceptable capacity  for timely repayment. However, these  securities
may  be  more vulnerable  to adverse  effects of  changes in  circumstances than
obligations carrying higher designations.
 
PREMIUM SECURITIES
The Fund  may invest  in  income securities  bearing  coupon rates  higher  than
prevailing  market rates. Such  "premium" securities are  typically purchased at
prices greater than the principal amounts payable on maturity. The Fund will not
amortize the premium paid for such securities in calculating its net  investment
income.  As a result, in such cases the purchase of such securities provides the
Fund a higher  level of  investment income  distributable to  shareholders on  a
current basis than if the Fund purchased securities bearing current market rates
of interest. If securities purchased by the
 
                   Statement of Additional Information Page 5
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
Fund  at a premium are called or sold prior to maturity, the Fund will realize a
loss to the  extent the  call or  sale price is  less than  the purchase  price.
Additionally,  the  Fund will  realize a  loss  if it  holds such  securities to
maturity.
 
INDEXED DEBT SECURITIES
The Fund  may invest  in debt  securities  issued by  banks and  other  business
entities  not located in developing market countries that are indexed to certain
specific foreign  currency exchange  rates, interest  rates or  other  reference
rates.  The  terms of  such securities  provide that  their principal  amount is
adjusted upwards or  downwards (but ordinarily  not below zero)  at maturity  to
reflect  changes in  the exchange rate  between two currencies  (or other rates)
while the obligations are outstanding. While such securities offer the potential
for an  attractive  rate  of return,  they  also  entail the  risk  of  loss  of
principal.  New forms of such securities continue  to be developed. The Fund may
invest  in  such  securities  to  the  extent  consistent  with  its  investment
objectives.
 
STRUCTURED INVESTMENTS
The  Fund may invest a portion of  its assets in interests in entities organized
and  operated  solely   for  the   purpose  of   restructuring  the   investment
characteristics  of  Sovereign Debt.  This  type of  restructuring  involves the
deposit with  or purchase  by an  entity, such  as a  corporation or  trust,  of
specified  instruments (such  as commercial bank  loans or Brady  Bonds) and the
issuance by  that entity  of  one or  more  classes of  securities  ("Structured
Investments")   backed  by,   or  representing  interests   in,  the  underlying
instruments. The  cash flow  on the  underlying instruments  may be  apportioned
among  the  newly  issued  Structured  Investments  to  create  securities  with
different  investment  characteristics  such  as  varying  maturities,   payment
priorities  and interest  rate provisions, and  the extent of  the payments made
with respect to Structured  Investments is dependent on  the extent of the  cash
flow  on the underlying instruments. Because  Structured Investments of the type
in which  the  Fund anticipates  it  will  invest typically  involve  no  credit
enhancement,  their  credit risk  generally will  be equivalent  to that  of the
underlying instruments.
 
The Fund is permitted  to invest in  a class of  Structured Investments that  is
either  subordinated  or not  subordinated to  the right  of payment  of another
class. Subordinated  Structured Investments  typically  have higher  yields  and
present greater risks than unsubordinated Structured Investments.
 
Certain  issuers  of  Structured Investments  may  be deemed  to  be "investment
companies" as defined in  the 1940 Act.  As a result,  the Fund's investment  in
these Structured Investments may be limited by the restrictions contained in the
1940   Act  described  above  under   "Investment  Objectives  and  Policies  --
Investments in Equity Securities." Structured Investments are typically sold  in
private  placement transactions, and there currently is no active trading market
for Structured Investments.
 
STRIPPED INCOME SECURITIES
Stripped income securities are obligations representing an interest in all or  a
portion  of  the income  or  principal components  of  an underlying  or related
security, a pool of securities  or other assets. In  the most extreme case,  one
class  will receive all of the interest (the interest only or "IO" class), while
the other class will  receive all of the  principal (the principal-only or  "PO"
class). The market values of stripped income securities tend to be more volatile
in   response  to  changes  in  interest  rates  than  are  conventional  income
securities.
 
FLOATING AND VARIABLE RATE INCOME SECURITIES
Income securities may provide for floating or variable rate interest or dividend
payments. The floating  or variable  rate may be  determined by  reference to  a
known  lending rate, such as a bank's  prime rate, a certificate of deposit rate
or the London Inter  Bank Offered Rate (LIBOR).  Alternatively, the rate may  be
determined  through  an auction  or remarketing  process. The  rate also  may be
indexed to  changes  in the  values  of  interest rate  or  securities  indexes,
currency  exchange rates or other commodities. The amount by which the rate paid
on an income security  may increase or  decrease may be  subject to periodic  or
lifetime  caps. Floating and variable  rate income securities include securities
whose rates  vary inversely  with  changes in  market  rates of  interest.  Such
securities  may also pay a rate of interest determined by applying a multiple to
the variable  rate.  The extent  of  increases and  decreases  in the  value  of
securities  whose rates vary inversely with  changes in market rates of interest
generally will  be larger  than comparable  changes  in the  value of  an  equal
principal  amount  of  a  fixed rate  security  having  similar  credit quality,
redemption provisions and maturity.
 
SWAPS, CAPS, FLOORS AND COLLARS. The Fund may enter into interest rate, currency
and index swaps and may  purchase or sell related  caps, floors and collars  and
other  derivative instruments. The Fund expects to enter into these transactions
primarily to preserve a return or  spread on a particular investment or  portion
of  its portfolio, to protect against  currency fluctuations, as a technique for
managing the portfolio's  duration (I.E.,  the price sensitivity  to changes  in
interest  rates) or to protect  against any increase in  the price of securities
the  Fund   anticipates  purchasing   at  a   later  date.   The  Fund   intends
 
                   Statement of Additional Information Page 6
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
to use these transactions as hedges and will not sell interest rate caps, floors
or  collars if  it does  not own  securities or  other instruments  providing an
income stream roughly equivalent to what the Fund may be obligated to pay.
 
Interest rate swaps involve the exchange by the Fund with another party of their
respective commitments to pay or receive  interest (for example, an exchange  of
floating  rate  payments for  fixed rate  payments) with  respect to  a notional
amount of principal. A currency swap is an agreement to exchange cash flows on a
notional amount based on changes in the values of the reference indices.
 
The purchase of a cap entitles the  purchaser to receive payments on a  notional
principal  amount from the party selling the  cap to the extent that a specified
index exceeds a predetermined  interest rate. The purchase  of an interest  rate
floor  entitles the purchaser to receive payments on a notional principal amount
from the party  selling the floor  to the  extent that a  specified index  falls
below  a predetermined interest rate  or amount. A collar  is a combination of a
cap and a floor that preserves a certain return within a predetermined range  of
interest rates or values.
 
- --------------------------------------------------------------------------------
 
                         OPTIONS, FUTURES AND CURRENCY
                                   STRATEGIES
 
- --------------------------------------------------------------------------------
 
SPECIAL RISKS OF OPTIONS, FUTURES AND CURRENCY STRATEGIES
The  use 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
    Manager'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 Manager 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 a Fund entered into  a
    short  hedge  because the  Manager projected  a  decline in  the price  of a
    security in the Fund's portfolio, and  the price of that security  increased
    instead,  the gain from that increase might by 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 Fund could  suffer a loss. In  either such case, the  Fund
    would have been in a better position had it not hedged at all.
 
        (4) As described below, the Fund 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 Fund 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 Fund'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 Fund sell a portfolio security at
    a disadvantageous time.  The Fund'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 Fund.
 
                   Statement of Additional Information Page 7
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
 
WRITING CALL OPTIONS
The  Fund 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 Manager  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 Fund.
 
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 may be assigned an
exercise notice, requiring him  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 the
Fund's investment objective. When writing a call option, the Fund, 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, the Fund 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 the Fund has  written expires, the Fund  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 Fund 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 Fund  does not  consider  a
security  or currency covered by  a call option to be  "pledged" as that term is
used in the Fund's policy that limits the pledging or mortgaging of its 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 the Fund will be obligated to
sell the security or currency at less than its market value.
 
The premium  that the  Fund receives  for writing  a call  option is  deemed  to
constitute the market value of an option. The premium the Fund 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  Manager  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  the Fund  to write
another call  option  on the  underlying  security  or currency  with  either  a
different exercise price, expiration date or both.
 
The  Fund will pay transaction  costs in connection with  the writing of options
and in entering into closing  purchase contracts. Transaction costs relating  to
options  activity normally  are 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 or currencies at the time the options
are  written. From time to time, the Fund 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.
 
The Fund 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 the Fund.
 
WRITING PUT OPTIONS
The Fund 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
 
                   Statement of Additional Information Page 8
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                       GT GLOBAL DEVELOPING MARKETS FUND
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.
 
The  Fund generally would  write put options in  circumstances where the Manager
wishes to purchase the underlying security or currency for the Fund's  portfolio
at  a price lower than the current market  price of the security or currency. In
such event, the Fund 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 Fund also would 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 the Fund will be obligated
to purchase the security or currency at greater than its market value.
 
PURCHASING PUT OPTIONS
The Fund may purchase put options on securities, indices and currencies. As  the
holder  of a put option, the Fund has  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. The  Fund may  enter into  closing sale
transactions with  respect to  such options,  exercise them  or permit  them  to
expire.
 
The  Fund  may purchase  a  put option  on  an underlying  security  or currency
("protective put") owned by the Fund 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 Fund, 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. For example,  a put option may be purchased
in order to protect unrealized appreciation  of a security or currency when  the
Manager  deems it desirable to continue to hold the security or currency because
of tax considerations. 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.
 
The Fund also may purchase put options at a time when the Fund does not own  the
underlying  security or  currency. By  purchasing put  options on  a security or
currency it does not own, the Fund 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 Fund 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
The Fund may purchase call options on securities, indices and currencies. As the
holder  of  a  call  option, the  Fund  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. The Fund may enter
into closing sale transactions  with respect to such  options, exercise them  or
permit them to expire.
 
Call  options may  be purchased  by the  Fund for  the purpose  of acquiring the
underlying security or currency for its portfolio. Utilized in this fashion, the
purchase of  call options  would enable  the  Fund 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 also  may  be useful  to  the Fund  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 Fund 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.
 
The Fund also may purchase call  options on underlying securities or  currencies
it  owns in order to protect unrealized gains on call options previously written
by  it.  A  call  option  could   be  purchased  for  this  purpose  where   tax
considerations  make  it inadvisable  to realize  such  gains through  a closing
purchase transaction.  Call options  also may  be purchased  at times  to  avoid
realizing  losses that would result in a reduction of the Fund's current return.
For example, where the Fund has written a call option on an underlying  security
or currency having a current market value below the price at which such security
or  currency was purchased  by the Fund,  an increase in  the market price could
result in the exercise of the call
 
                   Statement of Additional Information Page 9
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
option written by  the Fund  and the  realization of  a loss  on the  underlying
security  or currency. Accordingly, the Fund could purchase a call option on the
same underlying security or  currency, which could be  exercised to fulfill  the
Fund's  delivery obligations under  its written call (if  it is exercised). This
strategy could  allow  the Fund  to  avoid  selling the  portfolio  security  or
currency  at a time when it has an unrealized loss; however, the Fund 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  the
Fund's total assets at the time of purchase.
 
The Fund 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 the  Fund 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. A call option gives the  Fund
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  an
(European  style) the  expiration date. The  Fund 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
the Fund 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
the Fund 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. The Fund 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.
The  Fund  may also  sell OTC  options and,  in connection  therewith, segregate
assets or cover its obligations with respect to OTC options written by the Fund.
The assets used as cover for OTC options written by the Fund will be  considered
illiquid unless the OTC options are sold to qualified dealers who agree that the
Fund 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.
 
The  Fund's  ability to  establish and  close  out positions  in exchange-listed
options depends  on  the existence  of  a liquid  market.  The Fund  intends  to
purchase  or write only those exchange-traded options for which there appears to
be a liquid secondary  market. 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 the Fund
will  enter into OTC  options only with  contra parties that  are expected to be
capable of  entering  into closing  transactions  with  the Fund,  there  is  no
assurance that the Fund 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 Fund 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 the Fund 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 Fund 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 the Fund buys a call on an
index, it  pays a  premium  and has  the same  rights  as to  such call  as  are
indicated above. When the Fund 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   Fund's   exercise   of   the   put,   to   deliver   to   the   Fund    an
 
                  Statement of Additional Information Page 10
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
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 Fund writes a put on an
index, it receives  a premium  and the  purchaser has  the right,  prior to  the
expiration date, to require the Fund 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  the Fund writes a
call on  an index  it cannot  provide in  advance for  its potential  settlement
obligations  by acquiring  and holding the  underlying securities.  The Fund 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, the Fund  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 the Fund 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 Fund 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  the Fund has purchased  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 Fund 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
The Fund 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. The Fund'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 or  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.
 
The  Fund 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 the Fund's exposure to interest rate, currency exchange rate and
stock market  fluctuations, the  Fund 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.
 
                  Statement of Additional Information Page 11
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                       GT GLOBAL DEVELOPING MARKETS FUND
 
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 Fund realizes a gain; if it  is
more, the Fund realizes a loss. Conversely, if the offsetting sale price is more
than  the original purchase price, the Fund realizes  a gain; if it is less, the
Fund realizes  a loss.  The transaction  costs also  must be  included in  these
calculations.  There can be no assurance, however, that the Fund will be able to
enter into  an  offsetting transaction  with  respect to  a  particular  Futures
Contract  at  a particular  time.  If the  Fund  is not  able  to enter  into an
offsetting transaction, the Fund  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 Fund.
 
The  Fund's Futures transactions will be entered into for hedging purposes; that
is, Futures Contracts will be sold to protect against a decline in the price  of
securities  or  currencies that  the  Fund owns,  or  Futures Contracts  will be
purchased to protect the Fund 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 the Fund in order to  initiate Futures trading and to maintain  the
Fund's  open  positions in  Futures Contracts.  A margin  deposit made  when the
Futures Contract is entered  into ("initial margin") is  intended to assure  the
Fund'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 modified significantly  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  Fund 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,  among other  things,  by 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  the Fund'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 Contract 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 Contract
and option  prices  occasionally have  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.
 
                  Statement of Additional Information Page 12
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                       GT GLOBAL DEVELOPING MARKETS FUND
 
If the Fund 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 Fund would  continue to  be subject to
market risk with respect  to the position.  In addition, except  in the case  of
purchased  options,  the  Fund  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 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 the Fund  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.
 
The Fund 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  the Fund 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  Fund's portfolio, after taking  into
account  unrealized profits and unrealized losses  on any contracts the Fund 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 Company's
Board of Directors without  a shareholder vote. This  limitation does not  limit
the percentage of the Fund's assets at risk to 5%.
 
FORWARD CURRENCY 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. The Fund either may
accept or make delivery of the currency at the maturity of the Forward Contract.
The Fund may also, if its contra  party agrees, prior to maturity, enter into  a
closing transaction involving the purchase or sale of an offsetting contract.
 
                  Statement of Additional Information Page 13
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                       GT GLOBAL DEVELOPING MARKETS FUND
 
The  Fund engages  in forward  currency transactions  in anticipation  of, or to
protect itself against, fluctuations  in exchange rates. The  Fund 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, the Fund
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, the Fund  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. The Fund will enter into such Forward Contracts with major
U.S. or foreign banks and securities or currency dealers in accordance with  the
guidelines approved by the Company's Board of Directors.
 
The  Fund  may enter  into  Forward Contracts  either  with respect  to specific
transactions or  with respect  to the  Fund's portfolio  positions. 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 the Fund 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 Fund 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
Fund 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 the
Fund to sustain losses on these contracts and transaction costs.
 
At or before the  maturity of a  Forward Contract requiring the  Fund to sell  a
currency,  the  Fund either  may  sell a  portfolio  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  the Fund will  obtain, on  the same maturity  date, the  same
amount  of the currency that it is obligated to deliver. Similarly, the Fund may
close out a Forward Contract requiring  it to purchase a specified currency  by,
if its contra party agrees entering, into a second contract entitling it to sell
the same amount of the same currency on the maturity date of the first contract.
The  Fund 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 the Fund 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 usually are 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 the Fund 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
The  Fund 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 Fund's securities
are  denominated. Such currency hedges can  protect against price movements in a
security that  the Fund  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.
 
The  Fund  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 Fund 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 Manager  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
 
                  Statement of Additional Information Page 14
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
Contracts, Forward  Contracts or  options, the  Fund 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, the Fund 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 that the Fund has purchased) expose the Fund to an obligation to another
party.  The Fund 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. The Fund 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  the Fund's assets are used for cover or otherwise set aside, it could affect
portfolio management or the Fund's ability to meet redemption requests or  other
current obligations.
 
- --------------------------------------------------------------------------------
 
                                  RISK FACTORS
 
- --------------------------------------------------------------------------------
 
ILLIQUID SECURITIES
The  Fund  may  invest up  to  15% of  its  net assets  in  illiquid securities.
Securities may  be considered  illiquid  if the  Fund cannot  reasonably  expect
within  seven days to  sell the security  approximately the amount  at which the
Fund values such  securities. 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 the sale of  liquid
securities, such as securities eligible for trading on U.S. securities exchanges
or in the over-the-counter 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 not subject to restrictions on resale.
 
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, the Fund  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  Fund may be permitted to sell a  security
under  an effective  registration statement. If,  during such  a period, adverse
market conditions were to develop, the Fund 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 ("1933 Act"), including
private placements, repurchase agreements, commercial paper, foreign  securities
and   corporate  bonds  and  notes.   These  instruments  are  often  restricted
 
                  Statement of Additional Information Page 15
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
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
the  Fund, however, could  affect adversely the  marketability of such portfolio
securities and the Fund might be  unable to dispose of such securities  promptly
or at favorable prices.
 
With  respect  to liquidity  determinations  generally, the  Company's  Board of
Directors has  the  ultimate  responsibility for  determining  whether  specific
securities, including restricted securities pursuant to Rule 144A under the 1933
Act,  are liquid  or illiquid.  The Board has  delegated the  function of making
day-to-day determinations  of  liquidity  to  the  Manager  in  accordance  with
procedures  approved by the  Board. The Manager  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 who  make quotes for the security,
(iii) the  number  of dealers  who  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 Manager
monitors the liquidity of  securities in the  Fund's portfolio and  periodically
reports on such decisions to the Board.
 
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, the Fund could lose its entire investment  in
any such country.
 
In  addition, even  though opportunities  for investment  may exist  in emerging
markets, any change in  the leadership or policies  of the governments of  those
countries  or  in  the leadership  or  policies  of any  other  government which
exercises a significant influence over  those countries, may halt the  expansion
of  or reverse the  liberalization of foreign  investment policies now occurring
and thereby eliminate any investment opportunities which may currently exist.
 
Investors should note that upon the accession to power of authoritarian regimes,
the governments of a number of Latin American countries previously  expropriated
large  quantities of  real and personal  property similar to  the property which
will be  represented by  the securities  purchased by  the Fund.  The claims  of
property  owners against those governments were never finally settled. There can
be no assurance  that any property  represented by securities  purchased by  the
Fund  will not also be expropriated,  nationalized, or otherwise confiscated. If
such confiscation were to  occur, the Fund could  lose its entire investment  in
such  countries. The Fund's investments would similarly be adversely affected by
exchange control regulation in any of those countries.
 
    RELIGIOUS AND  ETHNIC STABILITY.  Certain countries  in which  the Fund  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 the Fund'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
the Fund invests and adversely affect the value of the Fund's 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 the Fund. These restrictions
or controls may at times limit or preclude investment in certain securities  and
may  increase the cost and expenses of  the Fund. For example, certain countries
require prior governmental approval before investments by foreign persons may be
made, or may limit
 
                  Statement of Additional Information Page 16
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
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. 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. The Fund 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 securities held by the Fund 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  the Fund 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 Manager 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  and  the  U.S.  government.  In  addition,  where public
information is  available,  it  may  be  less  reliable  than  such  information
regarding  U.S.  issuers. Issuers  of  securities on  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  the Fund, under  normal circumstances,  will
invest  a substantial portion of  its total assets in  the securities of foreign
issuers which are denominated in foreign currencies, the strength or weakness of
the U.S. dollar  against such foreign  currencies will account  for part of  the
Fund'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 the
Fund's holdings  of  securities  and  cash denominated  in  such  currency  and,
therefore,  will cause an overall decline in  the Fund's net asset value and any
net investment  income and  capital gains  derived from  such securities  to  be
distributed  in U.S. dollars to shareholders of the Fund. Moreover, if the value
of the foreign currencies in which  the Fund receives its income falls  relative
to  the  U.S.  dollar between  receipt  of the  income  and the  making  of Fund
distributions, the Fund may be required to liquidate securities in order to make
distributions if  the  Fund  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 movement of interest
rates, the pace of business activity  in certain other countries and the  United
States, and other economic and financial conditions affecting the world economy.
 
Although  the Fund values its assets daily in terms of U.S. dollars, it does not
intend to convert  its holdings  of foreign currencies  into U.S.  dollars on  a
daily  basis. The  Fund 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  are buying and  selling
various  currencies. Thus, a dealer may offer  to sell a foreign currency to the
Fund at one  rate, while  offering a  lesser rate  of exchange  should the  Fund
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  the  Fund are
uninvested and no return is  earned thereon. The inability  of the Fund to  make
intended  security purchases due to settlement  problems could cause the Fund to
miss attractive opportunities. Inability to dispose of a portfolio security  due
to  settlement  problems  either could  result  in  losses to  the  Fund  due to
subsequent declines  in value  of the  portfolio security  or, if  the Fund  has
entered into a contract to sell
 
                  Statement of Additional Information Page 17
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
the  security, could result in possible  liability to the purchaser. The Manager
will consider such difficulties  when determining the  allocation of the  Fund's
assets, although the Manager does not believe that such difficulties will have a
material adverse effect on the Fund's portfolio trading activities.
 
The  Fund may  use foreign  custodians, which may  involve risks  in addition to
those related to the  use of U.S. custodians.  Such risks include  uncertainties
relating  to (i) determining  and monitoring the  financial strength, reputation
and standing of the foreign  custodian, (ii) maintaining appropriate  safeguards
to  protect the Fund's investments and  (iii) possible difficulties in obtaining
and enforcing judgments against such custodians.
 
    WITHHOLDING TAXES. The Fund's net investment income from foreign  securities
may  be subject  to withholding taxes  by the foreign  issuer's country, thereby
reducing that income or delaying the receipt of income where those taxes may  be
recaptured. See "Taxes."
 
    CONCENTRATION.  To the extent the Fund  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 Manager  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 the Fund.
 
    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
United  States 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 the 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
 
                  Statement of Additional Information Page 18
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
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  of which factors 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.
 
Many of the Asia Pacific region countries may be subject to a greater degree  of
social,  political  and economic  instability  than is  the  case in  the United
States. Such instability may result from, among other things, the following: (i)
authoritarian governments  or military  involvement  in political  and  economic
decision  making, and changes in  government through extra-constitutional means;
(ii) popular unrest associated with demands for improved political, economic and
social conditions;  (iii) internal  insurgencies;  (iv) hostile  relations  with
neighboring  countries; and (v) ethnic,  religious and racial disaffection. Such
social, political  and  economic  instability could  significantly  disrupt  the
principal  financial markets in which the  Fund invests and adversely affect the
value of  the  Fund's  assets.  In  addition,  asset  expropriations  or  future
confiscatory levels of taxation possibly may affect the Fund.
 
    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  equity
securities  of  companies  in emerging  markets  may entail  greater  risks than
investing in equity securities in  developed countries. These risks include  (i)
less  social, political and  economic stability; (ii) the  small current size of
the markets for such securities and  the currently low or nonexistent volume  of
trading,  which result in a  lack of liquidity and  in greater price volatility;
(iii) certain  national  policies  which  may  restrict  the  Fund's  investment
opportunities,  including restrictions  on investment  in issuers  or industries
deemed sensitive  to national  interests;  (iv) foreign  taxation; and  (v)  the
absence  of  developed structures  governing  private or  foreign  investment or
allowing for judicial redress for injury to private property.
 
Several of  the Asia  Pacific region  countries have  or in  the past  have  had
hostile  relationships  with neighboring  nations  or have  experienced internal
insurgency. Thailand has  experienced border conflicts  with Laos and  Cambodia,
and India is engaged in border disputes with several of its neighbors, including
China  and Pakistan. An uneasy truce exists between North Korea and South Korea,
and the recurrence of hostilities remains possible. Reunification of North Korea
and South Korea could have a detrimental  effect on the economy of South  Korea.
Also,  China  continues  to  claim  sovereignty  over  Taiwan  and  recently has
conducted military maneuvers near Taiwan.
 
The economies of most of the Asia Pacific region countries are heavily dependent
upon international  trade  and  are accordingly  affected  by  protective  trade
barriers  and the economic conditions of their trading partners, principally the
United States, Japan,  China and the  European Community. The  enactment by  the
United  States  or  other  principal  trading  partners  of  protectionist trade
legislation, reduction of foreign investment in the local economies and  general
 
                  Statement of Additional Information Page 19
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
declines  in  the  international  securities markets  could  have  a significant
adverse effect upon the securities markets of the Asia Pacific region countries.
In addition,  the  economies of  some  of  the Asia  Pacific  region  countries,
Australia and Indonesia, for example, are vulnerable to weakness in world prices
for their commodity exports, including crude oil.
 
China  recently assumed sovereignty over Hong Kong. Although China has committed
by treaty to preserve the economic and social freedoms enjoyed in Hong Kong  for
fifty years, the continuation of the current form of the economic system in Hong
Kong  will depend on the  actions of the government  of China. In addition, such
reversion has increased sensitivity in  Hong Kong to political developments  and
statements  by  public  figures  in China.  Business  confidence  in  Hong Kong,
therefore, can be  significantly affected by  such developments and  statements,
which in turn can affect markets and business performance.
 
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
the  Hong Kong  markets and  dollar. However, factors  exist that  are likely to
mitigate this risk. First,  China has stated its  intention to implement a  "one
country,  two  systems" policy,  which would  preserve monetary  sovereignty and
leave control in the hands of the Hong Kong Monetary Authority ("HKMA").
 
Second, fixed  rate  parity  with  the  U.S.  dollar  is  seen  as  critical  to
maintaining  investors'  confidence  in  the transition  to  Chinese  rule, and,
therefore, it is anticipated that, if international investors lose confidence in
Hong Kong  dollar assets,  the HKMA  would intervene  to support  the  currency,
though  such  intervention cannot  be assured.  Third,  Hong Kong's  and China's
sizable combined foreign exchange  reserve may be used  to support the value  of
the Hong Kong dollar, provided that China does not appropriate such reserves for
other uses, which is not anticipated but cannot be assured. Finally, China would
be  likely to experience significant adverse political and economic consequences
if confidence  in the  Hong Kong  dollar and  the territory  assets were  to  be
endangered.
 
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 into  U.S. dollars and on repatriation  of
capital  invested. In the event of  such expropriation, nationalization or other
confiscation by any country,  the Fund 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.
 
    SOVEREIGN DEBT. Sovereign Debt generally offers high yields, reflecting  not
only  perceived  credit risk,  but also  the  need to  compete with  other local
investments in domestic financial markets. Certain Latin American countries  are
among  the  largest  debtors  to commercial  banks  and  foreign  governments. A
sovereign debtor's willingness or ability to repay principal and interest due in
a timely  manner  may  be  affected  by, among  other  factors,  its  cash  flow
situation,  the extent of  its foreign reserves,  the availability of sufficient
foreign exchange on the  date a payment  is due, the relative  size of the  debt
service  burden to the economy as a whole, the sovereign debtor's policy towards
the International  Monetary  Fund  and  the political  constraints  to  which  a
sovereign  debtor  may  be  subject.  Sovereign  debtors  may  default  on their
Sovereign  Debt.  Sovereign   debtors  may   also  be   dependent  on   expected
disbursements  from foreign governments, multilateral agencies and others abroad
to reduce principal and interest arrearages on their debt. The commitment on the
part of these governments, agencies and others to make such disbursements may be
conditioned on a  sovereign debtor's implementation  of economic reforms  and/or
economic  performance  and  the  timely service  of  such  debtor's obligations.
Failure to implement such reforms,  achieve such levels of economic  performance
or  repay principal or interest when due, may result in the cancellation of such
third parties' commitments  to lend  funds to  the sovereign  debtor, which  may
further impair such debtor's ability or willingness to timely service its debts.
 
                  Statement of Additional Information Page 20
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
 
In  recent years, some of the Latin American countries in which the Fund expects
to invest have encountered difficulties in servicing their Sovereign Debt.  Some
of  these  countries  have withheld  payments  of interest  and/or  principal of
Sovereign Debt. These difficulties  have also led  to agreements to  restructure
external  debt obligations -- in particular, commercial bank loans, typically by
rescheduling principal  payments,  reducing  interest rates  and  extending  new
credits to finance interest payments on existing debt. In the future, holders of
Sovereign  Debt may be requested to participate in similar reschedulings of such
debt.
 
The ability  of Latin  American governments  to make  timely payments  on  their
Sovereign  Debt is likely  to be influenced  strongly by a  country's balance of
trade and its access to trade  and other international credits. A country  whose
exports  are concentrated in a few commodities  could be vulnerable to a decline
in the  international prices  of  one or  more  of such  commodities.  Increased
protectionism  on the part of a  country's trading partners could also adversely
affect its exports.
 
    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 securities held by the Fund 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 the Fund 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 Manager 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  and  the  U.S.  government.  In  addition,  where  public
information  is  available,  it  may  be  less  reliable  than  such information
regarding U.S. issuers. In addition, for companies that keep accounting  records
in  local currency, inflation accounting rules  in some Latin American countries
require,  for  both  tax  and  accounting  purposes,  that  certain  assets  and
liabilities be restated on the company's balance sheet in order to express items
in  terms of  currency of  constant purchasing  power. Inflation  accounting may
indirectly generate  losses or  profits. There  is substantially  less  publicly
available   information  about  foreign   companies,  including  Latin  American
companies, and  the  governments of  Latin  American countries  than  there  are
reports  and ratings  published about  U.S. companies  and the  U.S. government.
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.
 
- --------------------------------------------------------------------------------
 
                             INVESTMENT LIMITATIONS
 
- --------------------------------------------------------------------------------
 
The  Fund's investment objectives may  not be changed without  the approval of a
majority of its outstanding voting securities. As defined in the 1940 Act and as
used in  this Statement  of Additional  Information a  "majority of  the  Fund's
outstanding  voting  securities"  means the  lesser  of  (i) 67%  of  the shares
represented at a meeting at  which more than 50%  of the outstanding shares  are
represented  and (ii) more than 50% of  the outstanding shares. In addition, the
Fund has adopted the following  fundamental investment limitations that may  not
be changed without approval of a majority of its outstanding voting securities.
 
The Fund may not:
 
        (1)  issue senior  securities or  borrow money  in amounts  in excess of
    those permitted under the 1940 Act;
 
        (2) make an investment in any one industry if the investment would cause
    the aggregate value of all investments in such industry to equal 25% or more
    of the Fund's total assets; provided that this limitation does not apply  to
    investments  in securities issued or guaranteed  by the U.S. government, its
    agencies or instrumentalities;
 
                  Statement of Additional Information Page 21
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
 
        (3)  purchase  securities  on  margin,  except  for  short-term  credits
    necessary  for clearance of portfolio transactions  and except that the Fund
    may make margin  deposits in  connection with  its use  of options,  futures
    contracts,  options  on futures  contracts,  forward currency  contracts and
    other financial instruments;
 
        (4) engage in the business of underwriting securities of other  issuers,
    except  to the extent that, in  connection with the disposition of portfolio
    securities, the Fund may be  deemed an underwriter under federal  securities
    laws and except that the Fund may write options;
 
        (5)  make short sales of securities or maintain a short position, except
    that the Fund  may maintain short  positions in connection  with its use  of
    options,  futures  contracts,  options  on  futures  contracts  and  forward
    currency contracts and may sell short "against the box;"
 
        (6)  purchase  or  sell  real  estate  (including  real  estate  limited
    partnership  interest),  provided that  the  Fund may  invest  in securities
    secured by, or issued by companies  that invest in real estate or  interests
    therein;
 
        (7) purchase or sell commodities or commodity contracts, except that the
    Fund  may  sell  commodities received  upon  the exercise  of  warrants, may
    purchase or  sell  financial  and currency  futures  contracts  and  options
    thereon, may purchase and sell forward contracts, may engage in transactions
    in   foreign  currencies  and  may  purchase  or  sell  options  on  foreign
    currencies; or
 
        (8) make  loans,  except  through loans  or  portfolio  instruments  and
    repurchase  agreements, provided that  for purposes of  this restriction the
    acquisition of  bonds, debentures  or other  debt instruments  or  interests
    therein  and  investment  in government  obligations,  short-term commercial
    paper, certificates of deposit and bankers' acceptances shall not be  deemed
    to be the making of a loan.
 
For purposes of the concentration policy of the Fund contained in limitation (2)
above,  the Fund intends to  comply with the SEC  staff position that securities
issued or guaranteed  as to  principal and interest  by any  one single  foreign
government,  or  by  all  supranational  organizations  in  the  aggregate,  are
considered to be securities of issuers in the same industry.
 
In addition, to  comply with  federal tax  requirements for  qualification as  a
"regulated  investment company,"  the Fund's  investments will  be limited  in a
manner such that, at the close of each quarter of its taxable year, (a) not more
than 25% of the value of its total assets are invested in the securities  (other
than  U.S government securities or the  securities of other regulated investment
companies) of any  one issuer and  (b) at least  50% of the  value of its  total
assets  are  represented by  cash and  cash  items, U.S.  government securities,
securities of other registered investment  companies and other securities,  with
these  other securities limited, in respect of any one issuer, to an amount that
does not exceed 5% of the value of its total assets and that does not  represent
more  than 10% of  the issuer's outstanding  voting securities ("Diversification
Requirements"). These  tax-related may  be  changed by  the Company's  Board  of
Directors  to  the extent  necessary to  comply with  changes to  applicable tax
requirements.
 
The Fund's other  investment policies  and limitations described  herein may  be
changed  by  the  Company's  Board of  Directors  without  shareholder approval,
provided that any such  policies and limitations as  so amended do not  conflict
with the Fund's fundamental investment limitations.
 
- --------------------------------------------------------------------------------
 
                             EXECUTION OF PORTFOLIO
                                  TRANSACTIONS
 
- --------------------------------------------------------------------------------
 
Subject to policies established by the Company's Board of Directors, the Manager
is  responsible for the  execution of the Fund's  portfolio transactions and the
selection of broker/dealers who execute such transactions on behalf of the Fund.
In executing portfolio transactions, the Manager seeks the best net results  for
the  Fund,  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
Manager  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 the Fund may engage in soft dollar arrangements for
research services, as described below, the  Fund has no obligation to deal  with
any  broker/dealer  or group  of broker/dealers  in  the execution  of portfolio
transactions.
 
                  Statement of Additional Information Page 22
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
 
Debt securities generally are traded  on a "net" basis  with a dealer acting  as
principal for its own account without a stated commission, although the price of
the  security  usually  includes  a  profit  to  the  dealer.  U.S.  and foreign
government securities and money market  instruments generally are traded in  the
OTC  markets. In underwritten  offerings, securities usually  are purchased at a
fixed price which  includes an  amount of  compensation to  the underwriter.  On
occasion,  securities may be purchased directly from an issuer, in which case no
commissions or discounts  are paid.  Broker/dealers may  receive commissions  on
futures, currency and options transactions.
 
Consistent  with the interests  of the Fund,  the Manager may  select brokers to
execute the Fund's  portfolio transactions,  on the  basis of  the research  and
brokerage  services they provide to the Manager for its use in managing the Fund
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 brokers are in addition to, and not in lieu of, the
services required to be performed by  the Manager under the Management  Contract
(defined below). A commission paid to such brokers may be higher than that which
another  qualified broker would have charged for effecting the same transaction,
provided that  the Manager  determines in  good faith  that such  commission  is
reasonable  in  terms  either  of that  particular  transaction  or  the overall
responsibility of the Manager  to the Fund  and its other  clients and that  the
total  commissions  paid by  the  Fund will  be  reasonable in  relation  to the
benefits received by the Fund over the long term. Research services may also  be
received from dealers who execute Fund transactions in OTC markets.
 
The  Manager  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 the Fund toward payment of the Fund's expenses, such as
transfer agent and custodian fees.
 
Investment decisions for the Fund and  for other investment accounts managed  by
the  Manager  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  the Fund. 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 the  Fund is concerned, in  other cases, the  Manager
believes that coordination and the ability to participate in volume transactions
will be beneficial to the Fund.
 
Under  a policy adopted by the Company's  Board of Directors, and subject to the
policy  of  obtaining  the  best  net  results,  the  Manager  may  consider   a
broker/dealer's sale of the shares of the Fund and the other funds for which the
Manager  serves as investment  manager in selecting brokers  and 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 Fund and such other funds.
 
The  Fund   contemplates   purchasing   most  foreign   equity   securities   in
over-the-counter  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  the Fund 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 the
Fund may invest generally are traded in the OTC markets.
 
The Fund contemplates that, consistent with the policy of obtaining the best net
results, brokerage transactions may be conducted through certain companies  that
are  members of the Liechtenstein Global Trust. The Company's Board of Directors
has 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.
 
PORTFOLIO TRADING AND TURNOVER
The  Fund engages in portfolio  trading when the Manager  has concluded that the
sale of a security owned by the Fund and/ or the purchase of another security of
better value can  enhance principal and/or  increase income. A  security may  be
sold  to avoid  any prospective decline  in market  value, or a  security may be
purchased  in  anticipation  of  a  market  rise.  Consistent  with  the  Fund's
investment  objective, a  security also  may be  sold and  a comparable security
purchased coincidentally in
 
                  Statement of Additional Information Page 23
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
order to take  advantage of what  is believed to  be a disparity  in the  normal
yield  and price relationship between the two securities. Although the Fund does
not intend generally  to trade  for short-term  profits, the  securities in  the
Fund's  portfolio will be sold whenever management believes it is appropriate to
do so, without regard to the length of time a particular security may have  been
held.  Portfolio turnover rate is calculated by  dividing the lesser of sales or
purchases of  portfolio securities  by the  Fund's average  month-end  portfolio
values,  excluding short-term investments. The  portfolio turnover rate will not
be a  limiting factor  when  the Manager  deems portfolio  changes  appropriate.
Higher portfolio turnover involves correspondingly greater brokerage commissions
and  other transaction costs that the Fund  will bear directly and may result in
the realization of net  capital gains that are  taxable when distributed to  the
Fund's  shareholders. For the fiscal years ended December 31, 1996 and 1995, the
Fund's portfolio turnover rates were     % and     %, respectively.
 
                  Statement of Additional Information Page 24
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
 
                            DIRECTORS AND EXECUTIVE
                                    OFFICERS
 
- --------------------------------------------------------------------------------
 
The Company's Directors and Executive Officers are listed below.
 
<TABLE>
<CAPTION>
NAME, POSITION(S) WITH THE               PRINCIPAL OCCUPATIONS AND BUSINESS
COMPANY AND ADDRESS                      EXPERIENCE FOR PAST 5 YEARS
- ---------------------------------------  ------------------------------------------------------------------------------------------
<S>                                      <C>
William J. Guilfoyle*, 39                President, GT Global since 1995; Director, GT Global since 1991; Senior Vice President and
Director, Chairman of the Board and      Director of Sales and Marketing, GT Global from May 1992 to April 1995; Vice President and
President                                Director of Marketing, GT Global from 1987 to 1992; Director, Liechtenstein Global Trust
50 California Street                     AG (holding company of the various international LGT 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 director or trustee of each of the other investment companies registered under the 1940
                                         Act that is managed or administered by Chancellor LGT Asset Management, Inc. ("Chancellor
                                         LGT").
 
C. Derek Anderson, 56                    President, Plantagenet Capital Management, LLC (an investment partnership); Chief
Director                                 Executive Officer, Plantagenet Holdings, Ltd. (an investment banking firm); Director,
220 Sansome Street                       Anderson Capital Management, Inc., since 1988; Chief Executive Officer, Anderson Capital
Suite 400                                Management, Inc., from 1991 to July 1997; Director, PremiumWear, Inc. (formerly
San Francisco, CA 94104                  Munsingwear, Inc.) (a casual apparel company), and Director, "R" Homes, Inc. and various
                                         other companies. Mr. Anderson is also a director or trustee of each of the other
                                         investment companies registered under the 1940 Act that is managed or administered by
                                         Chancellor LGT.
 
Frank S. Bayley, 58                      Partner with Baker & McKenzie (a law firm); Director and Chairman, C.D. Stimson Company (a
Director                                 private investment company). Mr. Bayley also is a director or trustee of each of the other
Two Embarcadero Center                   investment companies registered under the 1940 Act that is managed or administered by the
Suite 2400                               Manager.
San Francisco, CA 94111
 
Arthur C. Patterson, 54                  Managing Partner, Accel Partners (a venture capital firm). He also serves as a director of
Director                                 various computing and software companies. Mr. Patterson also is a director or trustee of
One Embarcadero Center                   each of the other investment companies registered under the 1940 Act that is managed or
Suite 3820                               administered by the Manager.
San Francisco, CA 94111
 
Ruth H. Quigley, 62                      Private investor; and President, Quigley Friedlander & Co., Inc. (a financial advisory
Director                                 services firm) from 1984 to 1986. Miss Quigley also is a director or trustee of each of
1055 California Street                   the other investment companies registered under the 1940 Act that is managed or
San Francisco, CA 94108                  administered by the Manager.
 
Robert G. Wade, Jr.*, 70                 Consultant to the Manager; Chairman of the Board of Chancellor Capital Management, Inc.
Director                                 from January 1995 to October 1996; President, Chief Executive Officer and Chairman of the
1166 Avenue of the Americas              Board of Chancellor Capital Management, Inc. from 1988 to January 1995.
New York, NY 10036
</TABLE>
 
- --------------
 *  Mr Guilfoyle and Mr. Wade are "interested persons" of the Company as defined
    by the 1940 Act due to their affiliation with the LGT companies.
 
                  Statement of Additional Information Page 25
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
 
<TABLE>
<CAPTION>
NAME, POSITION(S) WITH THE               PRINCIPAL OCCUPATIONS AND BUSINESS
COMPANY AND ADDRESS                      EXPERIENCE FOR PAST 5 YEARS
- ---------------------------------------  ------------------------------------------------------------------------------------------
<S>                                      <C>
 
Kenneth W. Chancey, 52            Vice President -- Mutual Fund Accounting, the Manager since 1992; and
Vice President and                Vice President, Putnam Fiduciary Trust Company from 1989 to 1992.
Principal Accounting Officer
50 California Street
San Francisco, CA 94111
 
Helge K. Lee, 51                  Executive Vice President, Asset Management Division, Liechtenstein
Vice President and Secretary      Global Trust since October 1996; Senior Vice President, LGT Asset
1166 Avenue of the Americas       Management, GT Global, GT Services and G.T. Insurance from February 1996
New York, NY 10036                to October 1996; Vice President, the Manager, LGT Asset Management, GT
                                  Global, GT Services and G.T. Insurance from May 1994 to February 1996;
                                  General Counsel, the Manager, LGT Asset Management, GT Global, GT
                                  Services and G.T. Insurance from May 1994 to October 1996; Secretary,
                                  the Manager, LGT Asset Management, GT Global, GT Services and G.T.
                                  Insurance from May 1994 to October 1996; Senior Vice President, General
                                  Counsel and Secretary, Strong/ Corneliuson Management, Inc.; and
                                  Secretary, each of the Strong Funds from October 1991 to May 1994.
</TABLE>
 
                         ------------------------------
 
The  Board of Directors 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 Directors, reviewing audits  of the Company and
its funds  and recommending  firms  to serve  as  independent auditors  for  the
Company.  Each of the Directors  and officers of the  Company is also a Director
and officer of G.T. Investment Portfolios, Inc. and GT Floating Rate Fund, Inc.,
a Trustee and officer of G.T. Global Growth Series and a Trustee of G.T.  Global
Eastern Europe Fund, G.T. Global Variable Investment Trust, G.T. Global Variable
Investment Series, Global High Income Portfolio and Global Investment Portfolio,
which  are also  registered investment  companies managed  by the  Manager. Each
Director and  officer serves  in total  as a  Director or  Trustee and  Officer,
respectively,  of 11 registered  investment companies with  41 series managed or
administered by  the Manager.  The Company  pays  each Director,  who is  not  a
director,  officer or employee of the  Manager or any affiliated company, $5,000
per annum,  plus $300  per Fund  for each  meeting of  the Board  attended,  and
reimburses  travel and other expenses incurred  in connection with attendance at
such meetings. Other Directors and  Officers receive no compensation or  expense
reimbursement  from the Company. For the fiscal year ended October 31, 1996, Mr.
Anderson, Mr. Bayley,  Mr. Patterson and  Miss Quigley, who  are not  directors,
officers  or employees of the Manager  or any affiliated company, received total
compensation of $30,200,  $30,200, $26,600 and  $30,200, respectively, from  the
Company  for which  he or she  serves as a  Director. For the  fiscal year ended
October 31,  1996, Mr.  Anderson, Mr.  Bayley, Mr.  Patterson and  Miss  Quigley
received   total  compensation   of  $80,100,  $80,100,   $72,600  and  $80,100,
respectively, from  the  investment companies  managed  or administered  by  the
Manager  for which he or she serves as  a Director or Trustee. Fees and expenses
disbursed to the Directors contained no accrued or payable pension or retirement
benefits. As of February 1, 1997, the Officers and Directors and their  families
as  a group owned in the aggregate beneficially or of record less than 1% of the
outstanding shares of the Fund or of all the Company's funds in the aggregate.
 
                  Statement of Additional Information Page 26
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
 
                                   MANAGEMENT
 
- --------------------------------------------------------------------------------
 
INVESTMENT MANAGEMENT AND ADMINISTRATION SERVICES
The  Manager serves as the Fund's  investment manager and administrator under an
Investment  Management  and  Administration  Contract  ("Management   Contract")
between  the Company and  the Manager. As  investment manager and administrator,
the Manager makes  all investment  decisions for  the Fund  and administers  the
Fund's  affairs. Among other things, the Manager furnishes the services and pays
the compensation  and travel  expenses  of persons  who perform  the  executive,
administrative,  clerical and bookkeeping functions of the Company and the Fund,
and provides  suitable  office  space,  necessary  small  office  equipment  and
utilities.  For these services, the Fund  pays the Manager investment management
and administration fees, based on the Fund's average daily net assets,  computed
daily  and  paid monthly,  at the  annualized rate  of .975%  on the  first $500
million, .95% on the next $500 million, .925% on the next $500 million, and .90%
on amounts thereafter.
 
The Management Contract  may be renewed  for one-year terms,  provided that  any
such  renewal  has  been specifically  approved  at  least annually  by  (i) the
Company's Board  of Directors,  or  by the  vote of  a  majority of  the  Fund's
outstanding  voting securities (as defined in the  1940 Act) and (ii) a majority
of Directors  who are  not parties  to the  Management Contract  or  "interested
persons"  of any such  party (as defined in  the 1940 Act), cast  in person at a
meeting called  for  the  specific  purpose of  voting  on  such  approval.  The
Management  Contract provides that with respect to  the Fund, the Company or the
Manager may  terminate the  Contract without  penalty upon  sixty days'  written
notice.  The Management  Contract terminates automatically  in the  event of its
assignment (as defined in the 1940 Act).
 
The  following  table  discloses  the   amount  of  investment  management   and
administration fees paid by the Fund to the Manager during the Fund's last three
fiscal years:
 
<TABLE>
<CAPTION>
YEAR ENDED DECEMBER 31,                                                                                       AMOUNT PAID
- -----------------------------------------------------------------------------------------------------------  -------------
<S>                                                                                                          <C>
1996.......................................................................................................   $
1995.......................................................................................................
1994.......................................................................................................
</TABLE>
 
DISTRIBUTION SERVICES
The  Fund's Class  A and  Class B  shares are  offered continuously  through the
Fund's principal underwriter  and distributor,  GT Global, on  a "best  efforts"
basis  pursuant to  a Distribution  Contract between  the Company  and GT Global
dated February 24, 1989.
 
As described in the Prospectus, the Company has adopted a separate  Distribution
Plan  with respect to each class of the Fund in accordance with Rule 12b-1 under
the 1940  Act  (the  "Class  A  Plan" and  "Class  B  Plan,"  respectively,  and
collectively,  "Plans"). The rate  of payments by  the Fund under  the Plans, as
described in the Prospectus,  may not be increased  without the approval of  the
majority  of the  outstanding voting  securities of  the Fund.  All expenses for
which GT Global is  reimbursed under the  Class A Plan  will have been  incurred
within  one year of such reimbursement. The  Fund makes no payments to any party
other than GT Global,  which is the distributor  (principal underwriter) of  the
Fund's shares. The Class B Plan took effect on                   .
 
In  approving the Plans, the Directors determined that the adoption of each Plan
was in the best interests of the shareholders of the Fund. Agreements related to
the Plans must  also be  approved by  such vote  of the  Directors, including  a
majority  of  Directors who  are  not "interested  persons"  of the  Company (as
defined in the 1940 Act) and who have no direct or indirect financial  interests
in the operation of the Plans, or in any agreement related thereto.
 
Each  Plan requires that,  at least quarterly, the  Directors review the amounts
expended thereunder and the purposes for which such expenditures were made. Each
Plan requires that so long  as it is in effect  the selection and nomination  of
Directors  who are not "interested persons" of  the Company will be committed to
the discretion of the Directors who are not "interested persons" of the Company,
as defined in the 1940 Act.
 
As discussed in  the Prospectus, GT  Global collects sales  charges on sales  of
Class A shares of the Fund, retains certain amounts of such charges and reallows
other amounts of such charges to broker/dealers who sell shares.
 
                  Statement of Additional Information Page 27
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
 
GT Global receives any contingent deferred sales charges payable with respect to
redemptions of Class B shares and certain Class A shares.
 
TRANSFER AGENCY AND ACCOUNTING AGENCY SERVICES
The  Transfer  Agent  has  been  retained by  the  Fund  to  perform shareholder
servicing, reporting  and general  transfer agent  functions for  the Fund.  For
these  services, the Transfer Agent receives an annual maintenance fee of $17.50
per account, a new account  fee of $4.00 per account,  a per transaction fee  of
$1.75 for all transactions other than exchanges and a per exchange fee of $2.25.
The Transfer Agent also is reimbursed by the Fund for its out-of-pocket expenses
for  such  items as  postage, forms,  telephone  charges, stationery  and office
supplies. The Manager serves as the Fund's pricing and accounting agent.
 
EXPENSES OF THE FUND
The Fund pays  all expenses  not assumed  by the  Manager, GT  Global and  other
agents.  These  expenses include,  in  addition to  the  advisory, distribution,
transfer agency,  pricing and  accounting agency  and brokerage  fees  discussed
above, legal and audit expenses, custodian fees, directors' fees, organizational
fees,  fidelity bond and other insurance premiums, taxes, extraordinary expenses
and the expenses  of reports and  prospectuses sent to  existing investors.  The
allocation  of general Company  expenses and expenses shared  among the Fund and
other funds organized as series of the  Company are allocated on a basis  deemed
fair and equitable, which may be based on the relative net assets of the Fund or
the  nature of  the services performed  and relative applicability  to the Fund.
Expenditures, including costs incurred in  connection with the purchase or  sale
of  portfolio  securities, which  are capitalized  in accordance  with generally
accepted accounting principles applicable to investment companies, are accounted
for as capital items and  not as expenses. The ratio  of the Fund's expenses  to
its  relative net assets can be expected to be higher than the expense ratios of
funds investing solely in domestic securities, since the cost of maintaining the
custody of foreign securities and the rate of investment management fees paid by
the Fund generally are higher than the comparable expenses of such other funds.
 
- --------------------------------------------------------------------------------
 
                            VALUATION OF FUND SHARES
 
- --------------------------------------------------------------------------------
 
As described in the Prospectus,  the Fund's net asset  value per share for  each
class  of shares is determined  at the close of regular  trading on the New York
Stock Exchange  ("NYSE")  (currently 4:00  p.m.  Eastern time,  unless  weather,
equipment  failure or  other factors contribute  to an earlier  closing time) on
each business day the NYSE is open  for business. Currently, the NYSE is  closed
on  weekends and on certain days relating  to the following holidays: New Year's
Day,  Presidents'  Day,  Good  Friday,  Memorial  Day,  July  4th,  Labor   Day,
Thanksgiving Day and Christmas Day.
 
The Fund's portfolio securities and other assets are valued as follows:
 
Equity  securities, including  ADRs, ADSs,  and EDRs,  that are  traded on stock
exchanges, are valued at the last sale price on the exchange or in the principal
over-the-counter market in which such securities are traded, as of the close  of
business  on the day the  securities are being valued  or, lacking any sales, at
the last available bid price. In cases where securities are traded on more  than
one  exchange,  the securities  are  valued on  the  exchange determined  by the
Manager to be the primary market.
 
Long-term debt obligations are valued at  the mean of representative quoted  bid
and  asked prices for such  securities or, if such  prices are not available, at
prices for securities of  comparable maturity, quality  and type; however,  when
the  Manager deems it appropriate, prices obtained for the day of valuation from
a bond pricing  service will be  used. Short-term investments  are amortized  to
maturity  based  on  their  cost,  adjusted  for  foreign  exchange translation,
provided such valuations represent fair value.
 
Options on indices, securities and currencies  purchased by the Fund are  valued
at  their last bid price  in the case of  listed options or, in  the case of OTC
options, at the 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. The value of  each security denominated in a currency  other
than  U.S. dollars will be translated into U.S. dollars at the prevailing market
rate as  determined by  the Manager  on  that day.  When market  quotations  for
futures  and options on  futures held by  the Fund are  readily available, those
positions will be valued based upon such quotations.
 
                  Statement of Additional Information Page 28
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
 
Securities and  other  assets  for  which  market  quotations  are  not  readily
available  (including restricted securities which  are subject to limitations as
to their sale) are valued at fair value as determined in good faith by or  under
the  direction of  the Company's  Board of  Directors. The  valuation procedures
applied in any specific instance are likely to vary from case to case.  However,
consideration  generally is  given to the  financial position of  the issuer and
other fundamental analytical data relating to  the investment and to the  nature
of the restrictions on disposition of the securities (including any registration
expenses  that might be borne by the  Fund in connection with such disposition).
In addition, specific factors also generally are considered, such as the cost of
the investment, the  market value  of any  unrestricted securities  of the  same
class  (both at the time of purchase and  at the time of valuation), the size of
the holding, the  prices of any  recent transactions or  offers with respect  to
such securities and any available analysts' reports regarding the issuer.
 
The  fair value  of any  other assets is  added to  the value  of all securities
positions to  arrive  at  the value  of  the  Fund's total  assets.  The  Fund's
liabilities,  including  accruals  for  expenses, are  deducted  from  its total
assets. Once the total  value of the  Fund's net assets  is so determined,  that
value  is  then divided  by the  total number  of shares  outstanding (excluding
treasury shares), and the result, rounded to  the nearer cent, is the net  asset
value per share.
 
Any assets or liabilities initially expressed in terms of foreign currencies are
translated into U.S. dollars at the official exchange rate or at the mean of the
current  bid and asked  prices of such  currencies against the  U.S. dollar last
quoted by a major  bank that is  a regular participant  in the foreign  exchange
market  or on the basis of a pricing  service that takes into account the quotes
provided by a  number of such  major banks.  If none of  these alternatives  are
available, or none are deemed to provide a suitable methodology for converting a
foreign  currency into U.S. dollars, the Board of Directors, in good faith, will
establish a conversion rate for such currency.
 
European, Far Eastern, or Latin American  securities trading may not take  place
on  all days on which the NYSE is open. Further, trading takes place in Japanese
markets on certain Saturdays and in various foreign markets on days on which the
NYSE is not open. In addition, trading in securities on European and Far Eastern
securities exchanges  and OTC  markets generally  is completed  well before  the
close  of the  business day  in New York.  Consequently, the  calculation of the
Fund's  net  asset  value  may   not  take  place  contemporaneously  with   the
determination of the prices of securities held by the Fund. Events affecting the
values  of portfolio  securities that  occur between  the time  their prices are
determined and the close of regular trading on the NYSE will not be reflected in
the Fund's net  asset value  unless the Manager,  under the  supervision of  the
Company's  Board  of  Directors,  determines  that  the  particular  event would
materially affect net asset value. As a  result, the Fund's net asset value  may
be  significantly affected  by such  trading on  days when  a shareholder cannot
purchase or redeem shares of the Fund.
 
- --------------------------------------------------------------------------------
 
                         INFORMATION RELATING TO SALES
                                AND REDEMPTIONS
 
- --------------------------------------------------------------------------------
 
PAYMENT AND TERMS OF OFFERING
Payment for Class A  or Class B shares  purchased should accompany the  purchase
order,  or  funds should  be wired  to the  Transfer Agent  as described  in the
Prospectus. Payment for Fund shares, other  than by wire transfer, must be  made
by  check or money  order drawn on a  U.S. bank. Checks or  money orders must be
payable in U.S. dollars.
 
As a condition of this offering, if an order to purchase either class of  shares
is  cancelled due to nonpayment (for example, on account of a check returned for
"not sufficient funds"), the person who  made the order will be responsible  for
any  loss  incurred by  the Fund  by reason  of such  cancellation, and  if such
purchaser is a shareholder, the  Fund shall have the  authority as agent of  the
shareholder  to redeem shares  in his or  her account at  their then-current net
asset value per  share to reimburse  the Fund for  the loss incurred.  Investors
whose  purchase orders have  been cancelled due to  nonpayment may be prohibited
from placing future orders.
 
The Fund  reserves the  right  at any  time to  waive  or increase  the  minimum
requirements applicable to initial or subsequent investments with respect to any
person  or class of persons.  An order to purchase shares  is not binding on the
Fund until it  has been confirmed  in writing  by the Transfer  Agent (or  other
arrangements  made with the Fund, in the  case of orders utilizing wire transfer
of funds, as described above) and payment has been received. To protect existing
shareholders, the Fund reserves the right to reject any offer for a purchase  of
shares by any individual.
 
                  Statement of Additional Information Page 29
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
 
SALES OUTSIDE THE UNITED STATES
Sales  of Fund shares made through brokers  outside the United States will be at
net asset value plus a sales commission,  if any, established by that broker  or
by  local law. Such  a commission, if  any, may be  more or less  than the sales
charges listed in the sales charge table included in the Prospectus.
 
LETTER OF INTENT -- CLASS A SHARES
A Letter of Intent ("LOI") is not a binding obligation to purchase the indicated
amount. During such time as  Class A shares are held  in escrow under an LOI  to
assure  payment of applicable sales charges if  the indicated amount is not met,
all dividends  and  capital  gain  distributions  on  escrowed  shares  will  be
reinvested  in additional Class  A shares or  paid in cash,  as specified by the
shareholder. If the intended  investment is not  completed within the  specified
13-month  period, the purchaser  must remit to GT  Global the difference between
the sales  charge actually  paid and  the  sales charge  which would  have  been
applicable  if the total  Class A purchases had  been made at  a single time. If
this amount is  not paid  to GT  Global within  20 business  days after  written
request,  the appropriate  number of  escrowed shares  will be  redeemed and the
proceeds paid to GT Global.
 
A registered investment adviser,  trust company or  trust department seeking  to
execute  an LOI  as a single  purchaser with  respect to accounts  over which it
exercises investment discretion is required  to provide the Transfer Agent  with
information establishing that it has discretionary authority with respect to the
money  invested (e.g., by providing a  copy of the pertinent investment advisory
agreement). Class  A  shares purchased  in  this manner  must  be  restrictively
registered  with the Transfer  Agent so that only  the investment adviser, trust
company or trust department, and not the beneficial owner, will be able to place
purchase, redemption and exchange orders.
 
AUTOMATIC INVESTMENT PLAN -- CLASS A SHARES AND CLASS B SHARES
To establish participation in the  GT Global Automatic Investment Plan  ("AIP"),
investors  or their brokers should specify whether investment will be in Class A
shares or Class B shares and send the following documents to the Transfer Agent:
(1) an AIP Application; (2) a Bank Authorization Form; and (3) a voided personal
check from the pertinent bank account.  The necessary forms are included at  the
back  of the  Fund's prospectus. Providing  that an investor's  bank accepts the
Bank Authorization  Form, investment  amounts will  be drawn  on the  designated
dates  (monthly on the  25th day or beginning  quarterly on the  25th day of the
month the  investor first  selects) in  order to  purchase full  and  fractional
shares  of the Fund at the public offering  price determined on that day. In the
event that the 25th day falls on  a Saturday, Sunday or holiday, shares will  be
purchased  on the next business day. If  an investor's check is returned because
of insufficient funds, a stop  payment order or the  account is closed, the  AIP
may  be discontinued, and any share purchase made upon deposit of such check may
be cancelled. Furthermore, the shareholder will be liable for any loss  incurred
by the Fund by reason of such cancellation. Investors should allow one month for
the  establishment of an AIP. An AIP may  be terminated by the Transfer Agent or
the Fund  upon 30  days' written  notice or  by the  participant, at  any  time,
without penalty, upon written notice to the Fund or the Transfer Agent.
 
INDIVIDUAL RETIREMENT ACCOUNTS (IRAs)
Class  A  or Class  B shares  of the  Fund  may be  purchased as  the underlying
investment for an IRA  meeting the requirements of  section 408(a) of the  Code.
IRA applications are available from brokers or GT Global.
 
EXCHANGES BETWEEN FUNDS
Shares  of the Fund may be exchanged for shares of other GT Global Mutual Funds,
based on  their respective  net asset  values without  imposition of  any  sales
charges  provided that the registration remains identical. Class A shares may be
exchanged only for  Class A  shares of  other GT  Global Mutual  Funds. Class  B
shares may be exchanged only for Class B shares of other GT Global Mutual Funds.
The  exchange privilege  is not  an option  or right  to purchase  shares but is
permitted under the current policies of  the respective GT Global Mutual  Funds.
The  privilege may be  discontinued or changed at  any time by  any of the funds
upon 60 days prior notice to the shareholders of such fund and is available only
in states  where the  exchange may  be legally  made. Before  purchasing  shares
through  the exercise of the exchange privilege, a shareholder should obtain and
read a copy of the  prospectus of the fund to  be purchased and should  consider
the investment objective(s) of the fund.
 
TELEPHONE REDEMPTIONS
A  corporation or partnership  wishing to utilize  telephone redemption services
must submit a "Corporate Resolution" or "Certificate of Partnership"  indicating
the names, titles and the required number of signatures of persons authorized to
act  on  its  behalf.  The  certificate must  be  signed  by  a  duly authorized
officer(s) and,  in  the case  of  a corporation,  the  corporate seal  must  be
affixed. All shareholders may request that redemption proceeds be transmitted by
bank  wire upon request directly to the shareholder's predesignated account at a
domestic bank or savings institution, if the proceeds are at least $1,000. Costs
in connection with the administration  of this service, including wire  charges,
currently are borne by the
 
                  Statement of Additional Information Page 30
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
Fund.  Proceeds  of  less  than  $1,000  will  be  mailed  to  the shareholder's
registered address of record. The Fund and the Transfer Agent reserve the  right
to  refuse  any telephone  instructions and  may discontinue  the aforementioned
redemption options upon 30 days' written notice.
 
SYSTEMATIC WITHDRAWAL PLAN
Shareholders owning  Class A  or Class  B shares  of the  Fund with  a value  of
$10,000 or more may establish a Systematic Withdrawal Plan ("SWP"). Under a SWP,
a shareholder will receive monthly or quarterly payments, in amounts of not less
than  $100 per payment, through the automatic redemption of the necessary number
of shares  on  the  designated dates  (monthly  on  the 25th  day  or  beginning
quarterly on the 25th day of the month the investor first selects). In the event
that  the 25th day falls  on a Saturday, Sunday  or holiday, the redemption will
take place on the prior business day. Certificates, if any, for the shares being
redeemed must be held by the Transfer Agent. Checks will be made payable to  the
designated  recipient and  mailed within seven  days. If the  recipient is other
than the  registered shareholder,  the  signature of  each shareholder  must  be
guaranteed   on  the  SWP  application  (see  "How  to  Redeem  Shares"  in  the
Prospectus). A  corporation (or  partnership) also  must submit  a  "Corporation
Resolution"  or "Certification of Partnership" indicating the names, titles, and
signatures of  the individuals  authorized to  act on  its behalf,  and the  SWP
application  must be  signed by a  duly authorized officer(s)  and the corporate
seal affixed.
 
With respect to a SWP, the maximum  annual SWP withdrawal is 12% of the  initial
account  value.  Withdrawals  in excess  of  12%  of the  initial  account value
annually may result  in assessment of  a contingent deferred  sales charge.  See
"How to Invest" in the Prospectus.
 
Shareholders should be aware that such systematic withdrawals may deplete or use
up  entirely  the  initial  investment  and  result  in  realized  long-term  or
short-term capital gains or losses. The SWP may be terminated at any time by the
Transfer Agent or the Fund upon 30 days' written notice or by a shareholder upon
written notice  to the  Fund or  its Transfer  Agent. Applications  and  further
details  regarding establishment of a SWP are provided at the back of the Fund's
Prospectus.
 
SUSPENSION OF REDEMPTION PRIVILEGES
The Fund may suspend redemption privileges  or postpone the date of payment  for
more  than seven days after a redemption order is received during any period (1)
when the NYSE is  closed other than customary  weekend and holiday closings,  or
trading  on  the  NYSE is  restricted  as determined  by  the SEC,  (2)  when an
emergency exists, as  defined by  the SEC, which  would prohibit  the Fund  from
disposing  of its portfolio securities or in fairly determining the value of its
assets, or (3) as the SEC may otherwise permit.
 
REDEMPTIONS IN KIND
It is possible  that conditions  may arise  in the  future which  would, in  the
opinion of the Company's Board of Directors, make it undesirable for the Fund to
pay  for all redemptions in cash. In such cases, the Board may authorize payment
to be made  in portfolio securities  or other  property of the  Fund, so  called
"redemption  in kind." Payment  of redemptions in  kind will be  made in readily
marketable securities.  Such  securities  would  be valued  at  the  same  value
assigned  to  them in  computing  the net  asset  value per  share. Shareholders
receiving such  securities  would incur  brokerage  costs in  selling  any  such
securities  so received. However,  despite the foregoing,  the Company has filed
with the SEC an election pursuant to  Rule 18f-1 under the 1940 Act. This  means
that  the  Fund  will  pay in  cash  all  requests for  redemption  made  by any
shareholder of record, limited in amount with respect to each shareholder during
any ninety-day period to the  lesser of $250,000 or 1%  of the value of the  net
assets of the Fund at the beginning of such period. This election is irrevocable
so  long  as  Rule  18f-1  remains  in effect,  unless  the  SEC  by  order upon
application permits the withdrawal of such election.
 
- --------------------------------------------------------------------------------
 
                                     TAXES
 
- --------------------------------------------------------------------------------
 
GENERAL
In order to continue to qualify for treatment as a regulated investment  company
("RIC")  under the Internal Revenue Code of  1986, as amended ("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, net short-term capital gain and net gains from certain foreign  currency
transactions)  ("Distribution  Requirement")  and must  meet  several additional
requirements.  These  requirements  include  the  Diversification   Requirements
[described under "Investment Limitations"] and the
 
                  Statement of Additional Information Page 31
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
requirement  that the Fund 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 foreign currencies, or
other  income  (including  gains  from options,  Futures  or  Forward Contracts)
derived with  respect  to its  business  of  investing in  securities  or  those
currencies ("Income Requirement").
 
Dividends  and  other distributions  declared  by the  Fund  in, 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.
 
A portion of  the dividends from  the Fund's investment  company taxable  income
(whether  paid in cash or  reinvested in additional shares)  may be eligible for
the dividends-received deduction allowed  to corporations. The eligible  portion
may  not  exceed  the  aggregate  dividends  received  by  the  Fund  from  U.S.
corporations.  However,  dividends  received  by  a  corporate  shareholder  and
deducted  by  it  pursuant  to  the  dividends-received  deduction  are  subject
indirectly to the alternative minimum tax.
 
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.
 
The Fund will be subject to a nondeductible 4% excise tax ("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.
 
FOREIGN TAXES
Dividends  and  interest  received  by  the  Fund  may  be  subject  to  income,
withholding or other  taxes imposed  by foreign countries  and U.S.  possessions
("foreign taxes") that would reduce the yield on its securities. Tax conventions
between  certain countries and the United States may reduce or eliminate foreign
taxes, however, and many foreign countries do not impose taxes on capital  gains
in respect of investments by foreign investors. If more than 50% of the value of
the  Fund's total assets at the close of its taxable year consists of securities
of foreign corporations, the Fund will be eligible to, and may, file an election
with the Internal Revenue Service that will enable its shareholders, in  effect,
to  receive the benefit  of the foreign  tax credit with  respect to any foreign
taxes paid by it. Pursuant to the election, the Fund would treat those taxes  as
dividends paid to its shareholders and each shareholder would be required to (1)
include in gross income, and treat as paid by him, his share of those taxes, (2)
treat  his  share of  those taxes  and of  any  dividend paid  by the  Fund that
represents income from foreign  and U.S. possessions sources  as his own  income
from  those  sources, and  (3) either  deduct the  taxes deemed  paid by  him in
computing his taxable income or, alternatively, use the foregoing information in
calculating the foreign tax credit against his federal income tax. The Fund will
report to  its shareholders  shortly after  each taxable  year their  respective
shares  of the  Fund's income  from sources within,  and taxes  paid to, foreign
countries and U.S. possessions if it makes this election.
 
PASSIVE FOREIGN INVESTMENT COMPANIES
The Fund  may invest  in the  stock of  "passive foreign  investment  companies"
("PFICs").  A PFIC is a foreign corporation  -- other than a "controlled foreign
corporation" (I.E.,  a foreign  corporation  in which,  on  any day  during  its
taxable  year,  more than  50% of  the total  voting power  of all  voting stock
therein or the total value of all stock therein is owned, directly,  indirectly,
or  constructively, by  "U.S. shareholders," defined  in the singular  as a U.S.
person that owns, directly, indirectly, or constructively, at least 10% of  that
voting  power)  as to  which the  Fund  is a  U.S. shareholder  (effective after
October 31, 1998) -- that, in general, meets either of the following tests:  (1)
at least 75% of its gross income is passive or (2) an average of at least 50% of
its  assets produce, or  are held for  the production of,  passive income. Under
certain circumstances,  the Fund  will be  subject to  federal income  tax on  a
portion  of  any "excess  distribution" received  on,  or of  any gain  from the
disposition of,  stock of  a PFIC  (collectively "PFIC  income"), plus  interest
thereon,  even if the Fund distributes the  PFIC income as a taxable dividend to
its shareholders. The balance of the PFIC income will be included in the  Fund's
investment company taxable income and, accordingly, will not be taxable to it to
the extent that income is distributed to its shareholders.
 
If  the Fund  invests in a  PFIC and  elects to treat  the PFIC  as a "qualified
electing fund"  ("QEF"),  then  in  lieu  of  the  foregoing  tax  and  interest
obligation,  the Fund would be  required to include in  income each taxable year
its pro rata  share of the  QEF's ordinary  earnings and net  capital gain  (the
excess  of net long-term capital gain over net short-term capital loss) -- which
most likely would have to be distributed by the Fund to satisfy the Distribution
Requirement and avoid
 
                  Statement of Additional Information Page 32
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
imposition of  the Excise  Tax  -- even  if those  earnings  and gain  were  not
received  by the Fund from the QEF. In most instances it will be very difficult,
if not  impossible,  to  make  this election  because  of  certain  requirements
thereof.
 
Effective for its taxable year beginning November 1, 1998, the Fund may elect to
"mark  to market" its  stock in any PFIC.  "Marking-to-market," in this context,
means including in ordinary income each taxable year the excess, if any, of  the
fair  market value of the PFIC's stock over the Fund's adjusted basis therein as
of the  end of  that year.  Pursuant to  the election,  the Fund  also would  be
allowed to deduct (as an ordinary, not capital, loss) the excess, if any, of its
adjusted  basis  in PFIC  stock over  the fair  market value  thereof as  of the
taxable year-end, but only  to the extent of  any net mark-to-market gains  with
respect  to that stock included by the  Fund for prior taxable years. The Fund's
adjusted basis in each PFIC's stock with respect to which it makes this election
would be adjusted to reflect the amounts of income included and deductions taken
under the  election.  Regulations  proposed  in 1992  would  provide  a  similar
election with respect to the stock of certain PFICs.
 
NON-U.S. SHAREHOLDERS
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")  will be
subject to  U.S. withholding  tax  (at a  rate of  30%  or lower  treaty  rate).
Withholding  will  not  apply  if a  dividend  paid  by the  Fund  to  a foreign
shareholder 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. Distributions  of net capital gain are  not
subject  to  withholding, but  in the  case of  a foreign  shareholder who  is a
nonresident alien individual, those distributions ordinarily will be subject  to
U.S.  income tax at  a rate of 30%  (or lower treaty rate)  if the individual is
physically present  in the  United States  for  more than  182 days  during  the
taxable year and the distributions are attributable to a fixed place of business
maintained by the individual in the United States.
 
OPTIONS, FUTURES AND FOREIGN CURRENCY TRANSACTIONS
The  use  of  hedging transactions,  such  as selling  (writing)  and purchasing
options and  Futures Contracts  and entering  into Forward  Contracts,  involves
complex  rules  that  will  determine,  for  federal  income  tax  purposes, the
character and timing of recognition of the gains and losses the Fund realizes in
connection therewith. Gains from the  disposition of foreign currencies  (except
certain  gains  that may  be  excluded by  future  regulations), and  gains from
options, Futures and Forward Contracts derived  by the Fund with respect to  its
business  of  investing in  securities or  foreign  currencies, will  qualify as
permissible income under the Income Requirement.
 
Futures and  Forward Contracts  that are  subject to  section 1256  of the  Code
(other  than  those  that  are  part  of  a  "mixed  straddle")  ("Section  1256
Contracts") and  that are  held by  the  Fund at  the end  of its  taxable  year
generally  will be deemed to  have been sold at  market value for federal income
tax purposes. Sixty percent of any net  gain or loss recognized on these  deemed
sales, and 60% of any net gain or loss realized from any actual sales of Section
1256  Contracts, will  be treated  as long-term  capital gain  or loss,  and the
balance will be treated as short-term capital  gain or loss. Section 988 of  the
Code also may apply to gains and losses from transactions in foreign currencies,
foreign-currency-denominated  debt securities  and options,  Futures and Forward
Contracts on foreign currencies ("Section  988" gains and losses). Each  Section
988 gain or loss generally is computed separately and treated as ordinary income
or  loss.  In  the  case  of overlap  between  sections  1256  and  988, special
provisions determine the character and timing  of any income, gain or loss.  The
Fund  attempts to monitor  section 988 transactions to  minimize any adverse tax
impact.
 
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 33
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
 
                             ADDITIONAL INFORMATION
 
- --------------------------------------------------------------------------------
 
LIECHTENSTEIN GLOBAL TRUST
Liechtenstein  Global  Trust, AG,  formerly  BIL GT  Group,  is composed  of the
Manager  and   its  worldwide   affiliates.   Other  worldwide   affiliates   of
Liechtenstein  Global Trust include LGT Bank  in Liechtenstein, formerly Bank in
Liechtenstein, an international financial services institution founded in  1920.
LGT  Bank in  Liechtenstein has principal  offices in  Vaduz, Liechtenstein. Its
subsidiaries currently  include LGT  Bank in  Liechtenstein (Deutschland)  GmbH,
formerly  Bank in Liechtenstein  (Frankfurt) GmbH, and  LGT Asset Management AG,
formerly Bilfinanz and Verwaltung AG, in Zurich, Switzerland.
 
Worldwide  asset  management  affiliates   also  currently  include  LGT   Asset
Management  PLC, formerly  G.T. Management  PLC, in  London, England;  LGT Asset
Management Ltd., formerly G.T. Management (Asia)  Ltd., in Hong Kong; LGT  Asset
Management   Ltd.,  formerly  G.T.  Management  (Japan),  in  Tokyo;  LGT  Asset
Management  Pte.  Ltd.,  formerly  G.T.  Management  (Singapore)  PTE  Ltd.,  in
Singapore; LGT Asset Management Ltd., formerly G.T. Management (Australia) Ltd.,
in Sydney; and LGT Asset Management GmbH, formerly BIL Asset Management GmbH, in
Frankfurt, Germany.
 
CUSTODIAN
State  Street  Bank and  Trust Company  ("State  Street"), 225  Franklin Street,
Boston, Massachusetts  02110, acts  as  custodian of  the Fund's  assets.  State
Street  is  authorized to  establish and  has  established separate  accounts in
foreign currencies and to cause  securities of the Fund  to be held in  separate
accounts outside the United States in the custody of non-U.S. banks.
 
INDEPENDENT ACCOUNTANTS
The Fund's independent accountants are Coopers & Lybrand L.L.P., One Post Office
Square, Boston, Massachusetts 02109. Coopers & Lybrand L.L.P. conducts an annual
audit  of the Fund, assists  in the preparation of  the Fund's federal and state
income tax returns and consults with the  Company and the Fund as to matters  of
accounting, regulatory filings, and federal and state income taxation.
 
The  audited financial statements  of the Company included  in this Statement of
Additional Information have been examined by Coopers & Lybrand L.L.P., 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.
 
USE OF NAME
The Manager has granted the  Company the right to use  the "GT" and "GT  Global"
names  and has  reserved the right  to withdraw its  consent to the  use of such
names by the Company and/or the  Fund at any time, or  to grant the use of  such
names to any other company.
 
                  Statement of Additional Information Page 34
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
 
                               INVESTMENT RESULTS
 
- --------------------------------------------------------------------------------
 
STANDARDIZED RETURNS
The  Fund's "Standardized Returns," as referred to in the Prospectus (see "Other
Information --  Performance  Information"  in the  Prospectus),  are  calculated
separately for Class A, and Class B shares of the Fund, as follows: Standardized
Return  (average  annual total  return ("T"))  is computed  by using  the ending
redeeming value ("ERV")  of a  hypothetical initial investment  of $1,000  ("P")
over  a period of years ("n") according  to the following formula as required by
the SEC: P(1+T)  to the (n)th  power =  ERV. The following  assumptions will  be
reflected  in computations made in accordance with this formula: (1) for Class A
shares, deduction of the maximum sales  charge of 4.75% from the $1,000  initial
investment;  (2)  for Class  B shares,  deduction  of the  applicable contingent
deferred sales charge imposed  on a redemption  of Class B  shares held for  the
period; (3) reinvestment of dividends and other distributions at net asset value
on the reinvestment date determined by the Company's Board of Directors; and (4)
a complete redemption at the end of any period illustrated.
 
The  Standardized Returns for the Class A and Class B shares of the Fund, stated
as average annualized total returns for the periods shown, were:
 
                                {TABLE TO COME}
 
NON-STANDARDIZED RETURNS
In  addition   to  Standardized   Returns,  the   Fund  may   also  include   in
advertisements,  sales  literature and  shareholder  reports other  total return
performance  data  ("Non-Standardized   Return").  Non-Standardized  Return   is
calculated  separately for  Class A and  Class B shares  of the Fund  and may be
calculated according to several different formulas. Non-Standardized Returns may
be quoted for the same or different time periods for which Standardized  Returns
are  quoted. Non-Standardized  Returns may  or may  not take  sales charges into
account; performance data calculated without taking the effect of sales  charges
into account will be higher than data including the effect of such charges.
 
Average  annual Non-Standardized  Return ("T") is  computed by  using the ending
redeeming value ("ERV")  of a  hypothetical initial investment  of $1,000  ("P")
over  a period of years ("n") according  to the following formula as required by
the SEC: P(1+T)  to the (n)th  power =  ERV. The following  assumptions will  be
reflected in computations made in accordance with this formula: (1) no deduction
of  sales charges; (2) reinvestment of  dividends and other distributions at net
asset value on the reinvestment date determined by the Board; and (3) a complete
redemption at the end of any period illustrated.
 
The average annual Non-Standardized Returns for  the Class A and Class B  shares
of  the Fund, stated as average annualized  total returns for the periods shown,
were:
 
                                {TABLE TO COME}
 
Aggregate Non-Standardized Return ("T") is computed by using the ending value of
the account  ("VOA")  of  a  hypothetical initial  investment  of  $1,000  ("P")
according  to the following  formula: T =  (VOA/P)-1. Aggregate Non-Standardized
Return assumes reinvestment  of dividends  and other distributions  and, as  set
forth below, may or may not take sales charge into account.
 
The  aggregate Non-Standardized Returns (not  taking sales charges into account)
for the  Class A  and Class  B shares  of the  Fund, stated  as aggregate  total
returns for the periods shown, were:
 
                                {TABLE TO COME}
 
The  aggregate Non-Standardized Returns (taking  sales charges into account) for
the Class A and B shares of the Fund, stated as aggregate total returns for  the
periods shown, were:
 
                                {TABLE TO COME}
 
IMPORTANT POINTS TO NOTE ABOUT DATA RELATING TO WORLD EQUITY AND BOND MARKETS
Information   relating  to   foreign  market   performance,  capitalization  and
diversification is based on  sources believed to be  reliable, but which may  be
subject to revision and which has not been independently verified by the Company
or  GT  Global.  The authors  and  publishers of  such  material are  not  to be
considered as "experts" under the Securities Act of
 
                  Statement of Additional Information Page 35
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
1933, on account of the inclusion  of such information herein. Stocks chosen  by
Morgan  Stanley Capital  International or the  IFC for inclusion  in its various
international market  indices may  not necessarily  constitute a  representative
cross-section of the particular makets.
 
GT  Global believes that this information may be useful to investors considering
whether and to what extent to  diversify their investments through the  purchase
of mutual funds investing in securities on a global basis. However, this data is
not a representation of the past performance of the Fund, nor is it a prediction
of such performance. The performance of the Fund will differ from the historical
performance  of  relevant  indices. The  performance  of indices  does  not take
expenses into account, while the Fund  incurs expenses in its operations,  which
will reduce performance. The Fund is actively managed, I.E., the Manager, as the
Fund's  investment manager, actively  purchases and sells  securities in seeking
the Fund's investment objective. Moreover, the Fund may invest a portion of  its
assets  in  corporate bonds,  while certain  indices  relate only  to government
bonds. Each of these factors  will cause the performance  of the Fund to  differ
from relevant indices.
 
In  addition,  GT Global  may in  its radio,  television and  other advertising,
employ the use of sound effects such as, for example, sounds of electronic  data
being communicated.
 
The  Fund and GT  Global may from  time to time  compare the Fund  with, but not
limited to, the following:
 
        (1) Various Salomon Brothers World Bond Indices, which measure the total
    return performance of high quality non-U.S. dollar denominated securities in
    major sectors of the worldwide bond markets.
 
        (2) The  Lehman Brothers  Government/Corporate Bond  Index, which  is  a
    comprehensive  measure  of  all  public  obligations  of  the  U.S. Treasury
    (excluding flower bonds  and foreign targeted  issues), all publicly  issued
    debt   of  agencies  of  the   U.S.  government  (excluding  mortgage-backed
    securities), and all  public, fixed rate,  non-convertible investment  grade
    domestic  corporate debt rated at least Baa by Moody's or BBB by S&P, or, in
    the case of nonrated bonds, BBB  by Fitch Investors Service, Inc.  ("Fitch")
    (excluding Collateralized Mortgage Obligations).
 
        (3)  Average of  Savings Accounts,  which is a  measure of  all kinds of
    savings deposits, including longer-term certificates. Savings accounts offer
    a guaranteed rate  of return on  principal, but no  opportunity for  capital
    growth.  During a  portion of  the period,  the maximum  rates paid  on some
    savings deposits were fixed by law.
 
        (4) The Consumer Price Index, which  is a measure of the average  change
    in  prices over time in  a fixed market basket  of goods and services (e.g.,
    food, clothing, shelter, fuels,  transportation fares, charges for  doctors'
    and dentists' services, prescription medicines, and other goods and services
    that people buy for day-to-day living).
 
        (5)  Data and mutual fund rankings and comparisons published or prepared
    by  Lipper  Analytical  Data  Services,  Inc.  ("Lipper"),  CDA/Wiesenberger
    Investment Company Services ("CDA/Wiesenberger") and/or other companies that
    rank  or compare mutual funds by overall performance, investment objectives,
    assets, expense levels, periods of  existence and/or other factors. In  this
    regard,  the Fund may be  compared to the Fund's  "peer group" as defined by
    Lipper, CDA/Wiesenberger and/or other firms,  as applicable, or to  specific
    funds or groups of funds within or without such peer group. Morningstar is a
    mutual  fund rating  service that  also rates mutual  funds on  the basis of
    risk-adjusted performance. Morningstar ratings are calculated from a  fund's
    three,  five  and  ten  year average  annual  returns  with  appropriate fee
    adjustments and a risk factor that reflects fund performance relative to the
    three-month U.S. Treasury bill monthly returns. Ten percent of the funds  in
    an  investment category receive five stars and 22.5% receive four stars. The
    ratings are subject to change each month.
 
        (6) Bear  Stearns  Foreign Bond  Index,  which provides  simple  average
    returns for individual countries and Gross National Product ("GNP") weighted
    index,  beginning in 1975. The  returns are broken down  by local market and
    currency.
 
        (7) Ibbottson  Associates International  Bond  Index, which  provides  a
    detailed breakdown of local market and currency returns since 1960.
 
        (8)  Standard & Poor's 500 Composite Stock Price Index which is a widely
    recognized index  composed of  the  capitalization-weighted average  of  the
    price of 500 of the largest publicly traded stocks in the U.S.
 
        (9) Salomon Brothers Broad Investment Grade Index which is a widely used
    index  composed of  U.S. domestic government,  corporate and mortgage-backed
    fixed income securities.
 
       (10) Dow Jones Industrial Average.
 
       (11) CNBC/Financial News Composite Index.
 
                  Statement of Additional Information Page 36
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
 
       (12) Morgan Stanley Capital International World Indices, including, among
    others, the Morgan Stanley Capital International Europe, Australia, Far East
    Index ("EAFE Index").  The EAFE  index is an  unmanaged index  of more  than
    1,000 companies in Europe, Australia and the Far East.
 
       (13)  Salomon Brothers World  Government Bond Index  and Salomon Brothers
    World Government Bond Index-Non-U.S. are  each a widely used index  composed
    of world government bonds.
 
       (14)  The World Bank Publication of Trends in Developing Countries (TIDE)
    provides brief reports on  most of the World  Bank's borrowing members.  The
    World  Development  Report is  published annually  and  looks at  global and
    regional  economic  trends  and   their  implications  for  the   developing
    economies.
 
       (15)  Salomon  Brothers Global  Telecommunications  Index is  composed of
    telecommunications companies in the developing and emerging countries.
 
       (16) Datastream  and Worldscope  each is  an on-line  database  retrieval
    service for information including but not limited to international financial
    and economic data.
 
       (17)  International  Financial  Statistics,  which  is  produced  by  the
    International Monetary Fund.
 
       (18) Various publications and  annual reports by the  World Bank and  its
    affiliates.
 
       (19)  Various publications from the International Bank for Reconstruction
    and Development/The World Bank.
 
       (20) Various publications including but  not limited to ratings  agencies
    such as Moody's, S&P and Fitch.
 
       (21)  Wilshire Associates which is  an on-line database for international
    financial and economic data including  performance measure for a wide  range
    of securities.
 
       (22)  Bank Rate National Monitor Index, which is an average of the quoted
    rates for 100 leading banks and thrifts in ten U.S. cities.
 
       (23) International Finance Corporation ("IFC") Emerging Markets Data Base
    which provides detailed statistics on  stock and bond markets in  developing
    countries.
 
       (24)  Various publications from the Organization for Economic Cooperation
    and Development (OECD).
 
Indices, economic and  financial data  prepared by the  research departments  of
various  financial organizations such as  Salomon Brothers Inc, Lehman Brothers,
Merrill Lynch, Pierce, Fenner & Smith, Inc., J. P. Morgan, Morgan Stanley, Smith
Barney, S.G. Warburg, Jardine Flemming, The Bank for International  Settlements,
Asian  Development Bank, Bloomberg, L.P. and Ibbottson Associates may be used as
well as information reported by the  Federal Reserve and the respective  Central
Banks  of  various  nations.  In  addition,  performance  rankings,  ratings and
commentary reported periodically  in national  financial publications,  included
but  not limited  to Money Magazine,  Mutual Fund Magazine,  Smart Money, Global
Finance, EuroMoney,  Financial  World,  Forbes, Fortune,  Business  Week,  Latin
Finance,  the Wall Street Journal, Emerging Markets Weekly, Kiplinger's Guide To
Personal Finance, Barron's, The Financial Times, USA Today, The New York  Times,
Far  Eastern Economic Review,  The Economist and  Investors Business Digest. The
Fund may compare  its performance to  that of other  compilations or indices  of
comparable  quality  to  those  listed  above and  other  indices  which  may be
developed and made available.
 
From time  to  time,  the  Fund  and  GT Global  may  refer  to  the  number  of
shareholders  in the  Fund or  the aggregate  number of  shareholders in  all GT
Global Mutual Funds  or the  dollar amount of  Fund assets  under management  or
rankings by DALBAR Surveys, Inc. in advertising materials.
 
GT  Global  believes  the  Fund  is  an  appropriate  investment  for  long-term
investment goals including, but  not limited to  funding retirement, paying  for
education  or  purchasing  a  house.  The Fund  does  not  represent  a complete
investment program and the investors should consider the Fund as appropriate for
a portion of their overall investment  portfolio with regard to their  long-term
investment goals.
 
GT  Global believes that  a growing number of  consumer products, including, but
not limited to home appliances, automobiles and clothing, purchased by Americans
are manufactured  abroad. GT  Global  believes that  investing globally  in  the
companies  that produce products for U.S. consumers can help U.S. investors seek
protection of the value of their assets against the potentially increasing costs
of foreign manufactured goods. Of course,  there can be no assurance that  there
will  be any correlation between global investing  and the costs of such foreign
goods unless there  is a corresponding  change in  value of the  U.S. dollar  to
foreign  currencies. From time to time, GT  Global may refer to or advertise the
names
 
                  Statement of Additional Information Page 37
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
of such companies although there can be  no assurance that any GT Global  Mutual
Fund may own the securities of these companies.
 
The Fund may compare its performance to that of other compilations or indices of
comparable  quality  to  those listed  above  which  may be  developed  and made
available in the future. The Fund may be compared in advertising to Certificates
of Deposit (CDs), the Bank Rate Monitor National Index, an average of the quoted
rates for 100 leading banks and thrifts  in ten U.S. cities chosen to  represent
the  ten largest Consumer  Metropolitan statistical areas,  or other investments
issued by banks. The Fund differs from bank investments in several respects. The
Fund may  offer greater  liquidity or  higher potential  returns than  CDs;  but
unlike  CDs, the Fund will have a fluctuating  share price and return and is not
FDIC insured.
 
The Fund's performance may be compared to the performance of other mutual  funds
in  general, or to  the performance of  particular types of  mutual funds. These
comparisons may  be  expressed  as  mutual  fund  rankings  prepared  by  Lipper
Analytical  Services, Inc. (Lipper),  an independent service  which monitors the
performance of mutual funds. Lipper generally ranks funds on the basis of  total
return,  assuming reinvestment of distributions, but does not take sales charges
or redemption fees  into consideration, and  is prepared without  regard to  tax
consequences.  In addition to  the mutual fund  rankings, the Fund's performance
may be compared to mutual fund performance indices prepared by Lipper.
 
GT Global may provide information designed to help individuals understand  their
investment  goals  and explore  various  financial strategies.  For  example, GT
Global may describe general principles  of investing, such as asset  allocation,
diversification and risk tolerance.
 
Ibbotson  Associates of Chicago, Illinois (Ibbotson) provides historical returns
of the capital  markets in  the United  States, including  common stocks,  small
capitalization  stocks, long-term corporate  bonds, intermediate-term government
bonds, long-term government bonds,  Treasury bills, the  U.S. rate of  inflation
(based on the CPI), and combinations of various capital markets. The performance
of these capital markets is based on the returns of different indices.
 
GT Global Mutual Funds may use the performance of these capital markets in order
to  demonstrate  general  risk-versus-reward  investment  scenarios. Performance
comparisons may also include  the value of a  hypothetical investment in any  of
these  capital  markets. The  risks associated  with the  security types  in any
capital market may or may not correspond directly to those of the Fund. Ibbotson
calculates total returns  in the  same method  as the  Fund. The  Fund may  also
compare  performance  to  that of  other  compilations  or indices  that  may be
developed and made available in the future.
 
In advertising materials, GT  Global may reference or  discuss its products  and
services,  which may include:  retirement investing; the  effects of dollar-cost
averaging and saving for  college or a  home. In addition,  GT Global may  quote
financial  or business publications and  periodicals, including model portfolios
or allocations, as they  relate to fund  management, investment philosophy,  and
investment techniques.
 
The Fund may discuss its Quotron number, CUSIP number, and its current portfolio
management team.
 
From  time to time, the Fund's performance  also may be compared to other mutual
funds tracked  by  financial  or  business  publications  and  periodicals.  For
example,  the Fund  may quote  Morningstar, Inc.  in its  advertising materials.
Morningstar, Inc. is a mutual fund rating service that rates mutual funds on the
basis of risk-adjusted performance. In addition, the Fund may quote financial or
business publications  and  periodicals  as  they  relate  to  fund  management,
investment  philosophy,  and investment  techniques.  Rankings that  compare the
performance of GT Global Mutual Funds  to one another in appropriate  categories
over specific periods of time may also be quoted in advertising.
 
The Fund may quote various measures of volatility and benchmark correlation such
as  beta, standard deviation and R(2) in  advertising. In addition, the Fund may
compare these measures to those of  other funds. Measures of volatility seek  to
compare the Fund's historical share price fluctuations or total returns compared
to  those  of  a  benchmark.  All measures  of  volatility  and  correlation are
calculated using averages of historical data.
 
The Fund may  advertise examples of  the effects of  periodic investment  plans,
including the principle of dollar cost averaging. In such a program, an investor
invests  a  fixed  dollar amount  in  the  fund at  periodic  intervals, thereby
purchasing fewer shares  when prices are  high and more  shares when prices  are
low.  While such a strategy does not assure  a profit or guard against loss in a
declining market, the  investor's average cost  per share can  be lower than  if
fixed  numbers of shares are purchased at the same intervals. In evaluating such
a plan, investors should  consider their ability  to continue purchasing  shares
through periods of low price levels.
 
The  Fund  may  be available  for  purchase  through retirement  plans  or other
programs offering deferral of or exemption from income taxes, which may  produce
superior  after-tax returns over time. For example, a $10,000 investment earning
a
 
                  Statement of Additional Information Page 38
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
taxable return of 10%  annually would have an  after-tax value of $17,976  after
ten  years, assuming tax was deducted from the return each year at a 39.6% rate.
An equivalent tax-deferred investment would  have an after-tax value of  $19,626
after  ten years, assuming  tax was deducted  at a 39.6%  rate from the deferred
earnings at the end of the ten-year period.
 
The Fund may describe in its  sales material and advertisements how an  investor
may invest in the GT Global Mutual Funds through various retirement accounts and
plans  that offer deferral of  income taxes on investment  earnings and may also
enable you to  make pre-tax  contributions. Because of  their advantages,  these
retirement  accounts  and  plans  may  produce  returns  superior  to comparable
non-retirement investments. In sales material  and advertisements, the Fund  may
also discuss these accounts and plans, which include:
 
INDIVIDUAL RETIREMENT ACCOUNTS (IRAs): If you have earned income from employment
(including  self-employment) you can  contribute each year  to an IRA  up to the
lesser of (1) $2,000 for yourself or $4,000 for you and your spouse,  regardless
of  whether  your  spouse  is  employed,  or,  (2)  100%  of  compensation. Some
individuals may be able  to take an income  tax deduction for the  contribution.
Regular  contributions  may not  be  made for  the year  you  become 70  1/2, or
thereafter. Please consult your tax advisor for more information.
 
ROLLOVER IRAs: Individuals who  receive distributions from qualified  retirement
plans  (other than  required distributions) and  who wish to  keep their savings
growing tax-deferred  can  roll  over  (or make  a  direct  transfer  of)  their
distribution  to a  Rollover IRA. These  accounts can also  receive rollovers or
transfers from an existing  IRA. If an "eligible  rollover distribution" from  a
qualified  employer-sponsored retirement plan is not  directly rolled over to an
IRA (or  certain  qualified plans),  withholding  at the  rate  of 20%  will  be
required  for federal income tax purposes.  A distribution from a qualified plan
that is not an "eligible  rollover distribution," including a distribution  that
is  one  of a  series  of substantially  equal  periodic payments,  generally is
subject to regular wage withholding or withholding at the rate of 10% (depending
on the type  of amount of  the distribution), unless  you elect to  to have  any
withholding apply. Please consult your tax advisor for more information.
 
SEP-IRAs:  Simplified  employee  pension  plans  "SEPs"  or  "SEP-IRAs"  provide
self-employed individuals (and any eligible employees) with benefits similar  to
Keogh-type plans or 401(k) plans, but with fewer administrative requirements and
therefore lower annual administration expenses.
 
CODE  SECTION 403(b)(7) CUSTODIAL ACCOUNTS: Employees of public schools and most
other  not-for-profit   corporations   can   make   pre-tax   salary   reduction
contributions to these accounts.
 
PROFIT-SHARING   (INCLUDING   SECTION   401(k))  AND   MONEY   PURCHASE  PENSION
PLANS: Corporations can sponsor these  qualified defined contribution plans  for
their   employees.  Section  401(k)  plans,   a  type  of  profit-sharing  plan,
additionally permit the eligible, participating employees to make pre-tax salary
reduction contributions to the plan (up to certain limitations).
 
SIMPLE RETIREMENT PLANS: Employers  with no more than  100 employees who do  not
maintain  another retirement plan  may establish a  Savings Incentive Match Plan
for Employees ("SIMPLE") either as  separate IRAs or as  part of a Code  Section
401(k)  plan. SIMPLEs are not subject to the complicated nondiscrimination rules
that generally apply to qualified retirement plans.
 
GT Global may from time to time in its sales methods and advertising discuss the
risks inherent in investing. The major types of investment risk are market risk,
industry risk,  credit  risk,  interest  rate  risk  and  inflation  risk.  Risk
represents the possibility that you may lose some or all of your investment over
a  period  of time.  A basic  tenet of  investing is  the greater  the potential
reward, the greater the risk.
 
From time to time, the Fund and  GT Global will quote information including  but
not  limited  to  data  regarding: individual  countries,  regions,  world stock
exchanges, and economic and demographic statistics from sources GT Global  deems
reliable  including the economic and financial  data of the referenced financial
organizations such as:
 
 1) Stock market  capitalization:  Morgan Stanley  Capital  International  World
    Indices, IFC and Datastream.
 
 2) Stock  market trading volume: Morgan  Stanley Capital International Industry
    Indices and IFC.
 
 3) The number of  listed companies: IFC,  G.T. Guide to  World Equity  Markets,
    Salomon Brothers, Inc., and S.G. Warburg.
 
 4) Wage  rates: U.S. Department of Labor  Statistics and Morgan Stanley Capital
    International World Indices.
 
                  Statement of Additional Information Page 39
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
 
 5) International industry  performance:  Morgan Stanley  Capital  International
    World Indices, Wilshire Associates and Salomon Brothers, Inc.
 
 6) Stock   market  performance:  Morgan  Stanley  Capital  International  World
    Indices, IFC and Datastream.
 
 7) The Consumer Price Index and inflation rate: The World Bank, Datastream  and
    IFC.
 
 8) Gross Domestic Product (GDP): Datastream and The World Bank.
 
 9) GDP growth rate: IFC, The World Bank and Datastream.
 
10) Population: The World Bank, Datastream and United Nations.
 
11) Average annual growth rate (%) of population: The World Bank, Datastream and
    United Nations.
 
12) Age  distribution within populations:  Organization for Economic Cooperation
    and Development and United Nations.
 
13) Total exports and imports by year: IFC, The World Bank and Datastream.
 
14) Top three companies by country, industry or market: IFC, G.T. Guide to World
    Equity Markets, Salomon Brothers Inc., and S.G. Warburg.
 
15) Foreign direct  investments  to developing  countries:  The World  Bank  and
    Datastream.
 
16) Standard  deviation and performance returns for U.S. and non-U.S. equity and
    bond markets: Morgan Stanley Capital International.
 
17) Countries restructuring their  debt, including those  under the Brady  Plan:
    the Manager.
 
18) Political and economic structure of countries: Economist Intelligence Unit.
 
19) Government  and corporate  bonds --  credit ratings,  yield to  maturity and
    performance returns: Salomon Brothers, Inc.
 
20) Dividend yields for U.S. and non-U.S. companies: Bloomberg.
 
21) Supply, consumption,  demand  and  growth in  demand  of  certain  products,
    services  and industries, including, but not limited to, electricity, water,
    transportation, construction materials, natural resources, technology, other
    basic infrastructure, financial services, health care services and supplies,
    consumer products and services and telecommunications equipment and services
    (sources of such information may include,  but would not be limited to,  The
    World Bank, OECD, IMF, Bloomberg and Datastream).
 
In  advertising and sales materials, GT Global  may make reference to or discuss
its products, services and accomplishments. Among these accomplishments are that
in 1983  the Manager  provided assistance  to  the government  of Hong  Kong  in
linking  its currency to the  U.S. dollar, and that  in 1987 Japan's Ministry of
Finance licensed  LGT  Asset  Management  Ltd.  as  one  of  the  first  foreign
discretionary  investment managers for Japanese investors. Such accomplishments,
however, should not be viewed as an endorsement of the Manager by the government
of Hong Kong, Japan's Ministry of Finance or any other government or  government
agency.  Nor do  any such accomplishments  of the Manager  provide any assurance
that the GT Global Mutual Funds' investment objectives will be achieved.
 
GT GLOBAL ADVANTAGE
As part of Liechtenstein Global Trust,  GT Global continues a 75-year  tradition
of  service  to  individuals  and  institutions.  Today  we  bring  investors  a
combination of experience, worldwide resources, a global perspective, investment
talent and a time tested investment discipline. With investment professionals in
nine offices  worldwide,  we  witness world  events  and  economic  developments
firsthand.
 
The  key to achieving  consistent results is  following a disciplined investment
process. Our  approach  to  asset  allocation takes  advantage  of  GT  Global's
worldwide   presence  and  global  perspective.  Our  "macroeconomic"  worldview
determines our overall strategy of regional, country and sector allocations. Our
bottom up  process  of security  selection  combines fundamental  research  with
quantitative analysis through our proprietary models.
 
Built  in  checks and  balances strengthen  the process,  enhancing professional
experience and judgment with an  objective assessment of risk. Ultimately,  each
security  we select has passed  a ranking system that  helps our portfolio teams
determine when to buy and when to sell.
 
                  Statement of Additional Information Page 40
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
 
                          DESCRIPTION OF DEBT RATINGS
 
- --------------------------------------------------------------------------------
 
DESCRIPTION OF BOND RATINGS
 
    Moody's rates the 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  edge."  Interest
    payments  are  protected  by a  large  or exceptionally  stable  margin, and
    principal is secure.  While the  various protective elements  are likely  to
    change,  such changes as can  be visualized are most  unlikely to impair the
    fundamentally strong position of such issues.
 
        Aa -- High quality by all standards. They are rated lower than the  best
    bond because margins of protection may not be as large as in Aaa securities,
    fluctuation  of protective elements may be of greater amplitude or there may
    be other  elements present  which make  the long-term  risk appear  somewhat
    greater.
 
        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.  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 to
    be well assured. Often the protection of interest and principal payments may
    be very moderate, and thereby not well safeguarded during other 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.
 
        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.
 
                  Statement of Additional Information Page 41
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
 
    S&P rates the securities debt of various entities in categories ranging from
"AAA"  to "DD" 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  --  High  grade. Very  strong  capacity  to pay  interest  and repay
    principal. Generally, these  bonds differ from  AAA issues only  in a  small
    degree.
 
        A -- Have a strong capacity to pay interest and repay principal although
    they  are  somewhat more  susceptible to  the adverse  effects of  change in
    circumstances and economic conditions than debt in higher rated categories.
 
        BBB -- Regarded as  having adequate capacity to  pay interest and  repay
    principal.  These bonds normally exhibit adequate protection parameters, but
    adverse economic conditions  or changing  circumstances are  more likely  to
    lead  to a weakened  capacity to pay  interest and repay  principal than for
    debt in higher rated categories.
 
        BB, B, CCC,  CC, C --  Debt rated "BB,"  "B," "CCC," "CC,"  and "C"  are
    regarded,  on balance, as predominantly speculative with respect to capacity
    to pay interest  and repay principal  in accordance with  the terms of  this
    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 indefinable  vulnerability to  default, and  is
    dependent upon favorable business, financial and economic conditions to meet
    timely  payment  of interest  and repayment  of principal.  In the  event of
    adverse business, financial or economic conditions, it is not likely to have
    the capacity to pay interest and repay principal. The "CCC" rating  category
    is also used for debt subordinated to senior debt that is assigned an actual
    or implied "B" or "B-" rating.
 
        CC  -- 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 which  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.
 
        C -- Reserved for income bonds on which no interest is being paid.
 
        D -- In payment default. The  "D" rating is used when interest  payments
    are  not made on  the date due even  if the applicable  grace period has not
    expired, unless S&P  believes that such  payments will be  made during  such
    grace  period.  The  "D" rating  also  will be  used  upon the  filing  of a
    bankruptcy petition if debt service payments are jeopardized.
 
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.
 
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  have  a  superior  capacity  for  repayment  of  short-term  promissory
obligations. Prime-1  repayment  capacity  normally will  be  evidenced  by  the
following   characteristics:  leading   market  positions   in  well-established
industries; high rates of return on funds employed; conservative  capitalization
structures  with moderate  reliance on debt  and ample  asset protections; 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.  Issues rated  Prime-2 have  a  strong
capacity  for repayment of short-term promissory obligations. This normally will
be evidenced by many of the characteristics cited above, but to a lesser degree.
Earnings trends and coverage ratios,
 
                  Statement of Additional Information Page 42
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
while sound, will be more subject to variation. Capitalization  characteristics,
while  still appropriate,  may be  more affected  by external  conditions. Ample
alternate liquidity is maintained.
 
    S&P ratings of commercial paper are graded into four categories ranging from
"A" for the  highest quality  obligations to  "D" for  the lowest.  A --  Issues
assigned  its highest  rating are regarded  as having the  greatest capacity for
timely payment. Issues in this category are delineated with numbers 1, 2, and  3
to  indicate the  relative degree of  safety. A-1 --  This designation indicates
that the degree  of safety regarding  timely payment is  either overwhelming  or
very   strong.   Those  issues   determined   to  possess   overwhelming  safety
characteristics will  be denoted  with  a plus  (++)  sign designation.  A-2  --
Capacity for timely payments on issues with this designation is strong; however,
the relative degree of safety is not as high as for issues designated "A-1."
 
COMMERCIAL PAPER RATINGS
The Fund may invest only in high quality commercial paper, i.e. commercial paper
rated  Prime-1 by Moody's, A-1 by S&P, or,  if unrated, judged by the Manager to
be of comparable  quality. Issuers  rated Prime-1  by Moody's  have, in  Moody's
judgment,  a  superior capacity  for repayment  of short-term  debt obligations.
Prime-1  repayment  capacity  will  normally  be  evidenced  by  the   following
characteristics:  leading market positions  in well-established industries; high
rates of return on funds  employed; conservative capitalization structures  with
moderate reliance on debt and ample asset protections; 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. Issues assigned the A-1 rating  by S&P are regarded by S&P
as having the greatest capacity  for timely payment. This designation  indicates
that  the degree  of safety regarding  timely payment is  either overwhelming or
very strong.
 
- --------------------------------------------------------------------------------
 
                              FINANCIAL STATEMENTS
 
- --------------------------------------------------------------------------------
 
The audited financial statements of the Fund as of October 31, 1996, and for its
fiscal year then-ended appear on the following pages.
 
                  Statement of Additional Information Page 43
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
 
GT  GLOBAL  MUTUAL  FUNDSGT GLOBAL  OFFERS  A  BROAD RANGE  OF  MUTUAL  FUNDS TO
COMPLEMENT MANY INVESTORS' PORTFOLIOS. FOR MORE INFORMATION AND A PROSPECTUS  ON
ANY  GT GLOBAL MUTUAL FUND, INCLUDING FEES, EXPENSES AND THE RISKS OF GLOBAL AND
EMERGING MARKET  INVESTING AND  THE RISKS  OF INVESTING  IN RELATED  INDUSTRIES,
PLEASE   CONTACT  YOUR  FINANCIAL   ADVISER  OR  CALL   GT  GLOBAL  DIRECTLY  AT
1-800-824-1580.
 
GROWTH FUNDS
/ / GLOBALLY DIVERSIFIED FUNDS
GT GLOBAL WORLDWIDE GROWTH FUND
Invests around the world, including the U.S.
 
GT GLOBAL INTERNATIONAL GROWTH FUND
Provides portfolio diversity by investing outside
the U.S.
 
GT GLOBAL EMERGING MARKETS FUND
Gives access to the growth potential of developing economies
 
GT GLOBAL DEVELOPING MARKETS FUND
Invests in debt and equity securities of developing market issuers
 
GT GLOBAL NEW DIMENSION FUND
Captures global growth themes by investing directly in the six GT Global Theme
Funds
 
/ / GLOBAL THEME FUNDS
GT GLOBAL CONSUMER PRODUCTS AND
SERVICES FUND
Invests in companies that manufacture, market, retail, or distribute consumer
products or services
 
GT GLOBAL FINANCIAL SERVICES FUND
Focuses on the worldwide opportunities from the demand for financial services
and products
 
GT GLOBAL HEALTH CARE FUND
Invests in growing health care industries worldwide
 
GT GLOBAL INFRASTRUCTURE FUND
Seeks companies that build, improve or maintain a country's infrastructure
 
GT GLOBAL NATURAL RESOURCES FUND
Concentrates on companies that own, explore or develop natural resources
 
GT GLOBAL TELECOMMUNICATIONS FUND
Invests in companies worldwide that develop, manufacture or sell
telecommunications services or equipment
 
/ / REGIONALLY DIVERSIFIED FUNDS
GT GLOBAL NEW PACIFIC GROWTH FUND
Offers access  to the  emerging  and established  markets  of the  Pacific  Rim,
excluding Japan
 
GT GLOBAL EUROPE GROWTH FUND
Focuses on investment opportunities in the new, unified Europe
 
GT GLOBAL LATIN AMERICA GROWTH FUND
Invests in the emerging markets of Latin America
 
/ / SINGLE COUNTRY FUNDS
GT GLOBAL AMERICA SMALL CAP GROWTH FUND
Invests in equity securities of small U.S. companies
 
GT GLOBAL AMERICA MID CAP GROWTH FUND
Concentrates on medium-sized companies in the U.S.
 
GT GLOBAL AMERICA VALUE FUND
Concentrates on equity securities of large cap U.S. companies believed to be
undervalued
 
GT GLOBAL JAPAN GROWTH FUND
Provides U.S. investors with direct access to the Japanese market
GROWTH AND INCOME FUND
GT GLOBAL GROWTH & INCOME FUND
Invests in blue-chip stocks and government bonds from around the world
INCOME FUNDS
GT GLOBAL GOVERNMENT INCOME FUND
Earns monthly income from global government securities
 
GT GLOBAL STRATEGIC INCOME FUND
Allocates its assets among debt securities from the U.S., developed foreign
countries and emerging markets
 
GT GLOBAL HIGH INCOME FUND
Invests in debt securities in emerging markets
 
GT GLOBAL FLOATING RATE FUND
Invests primarily in senior secured floating rate loans that have the potential
to achieve a high level of current income
MONEY MARKET FUND
GT GLOBAL DOLLAR FUND
Invests  in  high  quality,  U.S.  dollar-denominated  money  market  securities
worldwide for stability and preservation of capital
 
[LOGO]
 
  NO DEALER, SALES REPRESENTATIVE OR OTHER PERSON HAS BEEN AUTHORIZED TO  GIVE
  ANY  INFORMATION  OR  TO  MAKE  ANY  REPRESENTATION  NOT  CONTAINED  IN THIS
  PROSPECTUS AND, IF GIVEN  OR MADE, SUCH  INFORMATION OR REPRESENTATION  MUST
  NOT BE RELIED UPON AS HAVING BEEN AUTHORIZED BY G.T. INVESTMENT FUNDS, INC.,
  GT  GLOBAL DEVELOPING MARKETS FUND, CHANCELLOR LGT ASSET MANAGEMENT, INC. OR
  GT GLOBAL, INC.  THIS PROSPECTUS  DOES NOT CONSTITUTE  AN OFFER  TO SELL  OR
  SOLICITATION OF ANY OFFER TO BUY ANY OF THE SECURITIES OFFERED HEREBY IN ANY
  JURISDICTION TO ANY PERSON TO WHOM IT IS UNLAWFUL TO MAKE SUCH OFFER IN SUCH
  JURISDICTION.
                                                                   GROSA703   MC
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND:
                                 ADVISOR CLASS
 
                        50 California Street, 27th Floor
                        San Francisco, California 94111
                                 (415) 392-6181
                           Toll Free: (800) 824-1580
 
                      Statement of Additional Information
                                November 1, 1997
 
- --------------------------------------------------------------------------------
 
This  Statement of Additional Information relates to the Advisor Class shares of
GT Global Developing Markets  Fund (the "Fund"). The  Fund is a  non-diversified
series  of G.T.  Investment Funds, Inc.  (the "Company"),  a registered open-end
management investment company. This  Statement of Additional Information,  which
is  not a  prospectus, supplements  and should be  read in  conjunction with the
Fund's current Advisor Class Prospectus dated November 1, 1997, a copy of  which
is  available without charge by  writing to the above  address or by calling the
Fund at the toll-free telephone number listed above.
 
Chancellor LGT  Asset Management,  Inc.  (the "Manager")  serves as  the  Fund's
investment manager and administrator. The distributor of the Fund's shares is GT
Global,  Inc. ("GT  Global"). The  Fund's transfer  agent is  GT Global Investor
Services, Inc. ("GT Services" or the "Transfer Agent").
 
- --------------------------------------------------------------------------------
 
                               TABLE OF CONTENTS
 
- --------------------------------------------------------------------------------
 
<TABLE>
<CAPTION>
                                                                                                                           Page No.
                                                                                                                           --------
<S>                                                                                                                        <C>
Investment Objectives and Policies.......................................................................................      2
Options, Futures and Currency Strategies.................................................................................      7
Risk Factors.............................................................................................................     15
Investment Limitations...................................................................................................     21
Execution of Portfolio Transactions......................................................................................     23
Directors and Executive Officers.........................................................................................     25
Management...............................................................................................................     27
Valuation of Fund Shares.................................................................................................     28
Information Relating to Sales and Redemptions............................................................................     29
Taxes....................................................................................................................     30
Additional Information...................................................................................................     32
Investment Results.......................................................................................................     33
Description of Debt Ratings..............................................................................................     38
Financial Statements.....................................................................................................     41
</TABLE>
 
[LOGO]
 
                   Statement of Additional Information Page 1
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
 
                           INVESTMENT OBJECTIVES AND
                                    POLICIES
 
- --------------------------------------------------------------------------------
 
INVESTMENT OBJECTIVES
The  primary investment objective of the Fund is long-term capital appreciation.
Its secondary  investment objective  is income,  to the  extent consistent  with
seeking capital appreciation. The Fund normally invests substantially all of its
assets  in issuers  in the developing  (or "emerging") markets  of Asia, Europe,
Latin America and elsewhere. The Fund does not consider the following  countries
to  be emerging markets: Australia,  Austria, Belgium, Canada, Denmark, England,
Finland, France, Germany, Ireland, Italy,  Japan, the Netherlands, New  Zealand,
Norway,  Spain, Sweden, Switzerland and the  United States. In determining which
countries constitute emerging  markets, the Manager  will consider, among  other
thing, data, analysis, and classification of countries published or disseminated
by  the International Bank for Reconstruction and Development (commonly known as
the World Bank) and the International Finance Corporation ("IFC").
 
SELECTION OF EQUITY INVESTMENTS
For investment  purposes, an  issuer is  typically considered  as located  in  a
particular  country  if it  (a) is  incorporated under  the laws  of or  has its
principal office in that country, or (b) it normally derives 50% or more of  its
total  revenue from  business in that  country. However, these  are not absolute
requirements, and certain  companies incorporated  in a  particular country  and
considered  by the Manager  to be located  in that country  may have substantial
off-shore operations or subsidiaries and/or  export sales exceeding in size  the
assets or sales in that country.
 
In  determining  the  appropriate  distribution  of  investments  among  various
countries and geographic regions for the Fund, the Manager ordinarily  considers
the  following  factors:  prospects  for  relative  economic  growth  among  the
different countries in which the Fund may invest; expected levels of  inflation;
government  policies influencing  business conditions; the  outlook for currency
relationships;  and  the  range  of  the  individual  investment   opportunities
available to international investors.
 
In  analyzing  companies in  emerging markets  for investment  by the  Fund, the
Manager ordinarily looks for  one or more of  the following characteristics:  an
above-average  earnings  growth  per  share; high  return  on  invested capital;
healthy balance  sheet;  sound financial  and  accounting policies  and  overall
financial  strength;  strong  competitive  advantages;  effective  research  and
product development  and  marketing;  efficient  service;  pricing  flexibility;
strength  of management; and general operating characteristics which will enable
the companies  to  compete successfully  in  their respective  marketplaces.  In
certain countries, governmental restrictions and other limitations on investment
may  affect the maximum percentage of equity ownership in any one company by the
Fund. 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.
 
Although  the Fund values  its assets daily  in terms of  U.S. dollars, the Fund
does not intend to convert its holdings of foreign currencies into U.S.  dollars
on a daily basis. The Fund 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  are buying and selling
various currencies. Thus, a dealer may offer  to sell a foreign currency to  the
Fund  at one  rate, while  offering a  lesser rate  of exchange  should the Fund
desire to sell that currency to the dealer.
 
The Fund may be prohibited under the Investment Company Act of 1940, as  amended
("1940 Act"), from purchasing the securities of any foreign company that, in its
most  recent  fiscal year,  derived more  than  15% of  its gross  revenues from
securities-related activities ("securities-related companies").  In a number  of
countries,   commercial  banks  act  as  securities  broker/dealers,  investment
advisers and underwriters or otherwise engage in securities-related  activities,
which  may limit the Fund's ability to hold securities issued by such banks. The
Fund has  obtained an  exemption  from the  Securities and  Exchange  Commission
("SEC") to permit it to invest in certain of these securities subject to certain
restrictions.
 
INVESTMENTS IN OTHER INVESTMENT COMPANIES
The  Fund may invest in the securities of investment companies within the limits
of the 1940 Act. These limitations currently provide that, in general, the  Fund
may  purchase  shares  of a  closed-end  investment  company unless  (a)  such a
purchase would cause the Fund to own in the aggregate more than 3 percent of the
total outstanding voting stock of the
 
                   Statement of Additional Information Page 2
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
investment company or (b) such a purchase would cause the Fund to have more than
5 percent of its total assets invested in the investment company or more than 10
percent of its  total assets  invested in an  aggregate of  all such  investment
companies.  Investment in such investment companies may also involve the payment
of substantial premiums above the value of such companies' portfolio securities.
The Fund does not intend to invest  in such investment companies unless, in  the
judgment  of the Manager, 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.
 
DEPOSITORY RECEIPTS
The Fund may hold equity 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 issuers. These  securities may  not necessarily be  denominated in  the
same  currency as the securities for which  they may be exchanged. ADRs and ADSs
typically are 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 United States securities markets and EDRs in bearer
form  are designed for use  in European securities markets.  For purposes of the
Fund's investment policies, the Fund'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
Fund may invest in both sponsored and unsponsored ADRs.
 
WARRANTS OR RIGHTS
Warrants or  rights  may  be acquired  by  the  Fund in  connection  with  other
securities  or separately and provide  the Fund with the  right to purchase at a
later date other securities of the issuer.
 
Warrants  are  securities  permitting,  but  not  obligating,  their  holder  to
subscribe  for other securities or commodities.  Warrants do not carry with them
the right to dividends or voting rights with respect to the securities that they
entitle their holder to purchase,  and they do not  represent any rights in  the
assets  of the issuer. As a result,  warrants may be considered more speculative
than certain other  types of investments.  In addition, the  value of a  warrant
does  not necessarily change with  the value of the  underlying securities and a
warrant ceases to  have value if  it is  not exercised prior  to its  expiration
date.
 
LENDING OF PORTFOLIO SECURITIES
For  the purpose of realizing additional income, the Fund may make secured loans
of portfolio securities  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 continuously be 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 Fund  may pay  reasonable
administrative  and custodial fees  in connection with  loans of its securities.
While the securities loan is outstanding, the Fund 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.
The   Fund   will   have  a   right   to   call  each   loan   and   obtain  the
 
                   Statement of Additional Information Page 3
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
securities on five business days'  notice. The Fund will  not have the right  to
vote  equity  securities while  they are  lent, but  it  may call  in a  loan in
anticipation of any important vote. Loans will  be made only to firms deemed  by
the  Manager to be of good standing and will not be made unless, in the judgment
of the Manager, the consideration to be earned from such loans would justify the
risk.
 
COMMERCIAL BANK OBLIGATIONS
For the  purposes  of  the  Fund'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, however,  may be  limited by  the terms  of a  specific
obligation  and  by  government  regulation.  As  with  investment  in  non-U.S.
securities in general,  investments in  the obligations of  foreign branches  of
U.S.  banks and of foreign  banks may subject the  Fund to investment risks that
are different  in some  respects from  those of  investments in  obligations  of
domestic  issuers. Although the  Fund typically will  acquire obligations issued
and supported by the credit of U.S. or foreign banks having total assets at  the
time  of purchase  in excess  of $1 billion,  this $1  billion figure  is not an
investment policy or restriction  of the Fund. 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 the Fund purchases a  security
from a bank or recognized securities dealer and simultaneously commits to resell
that  security to the bank  or dealer at an agreed  upon price, date, and market
rate of  interest unrelated  to the  coupon rate  or maturity  of the  purchased
security. 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 Fund if the other party
to  the repurchase  agreement becomes bankrupt,  the Fund intends  to enter into
repurchase agreements only  with banks and  dealers believed by  the Manager  to
present  minimum credit risks  in accordance with  guidelines established by the
Company's  Board  of  Directors.  The  Manager  will  review  and  monitor   the
creditworthiness of such institutions under the Board's general supervision.
 
The  Fund 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, the Fund would
suffer a loss.  If the financial  institution which is  party to the  repurchase
agreement petitions for bankruptcy or otherwise becomes subject to bankruptcy or
other  liquidation proceedings, there may be  restrictions on the Fund's ability
to sell the collateral and the Fund  could suffer a loss. However, with  respect
to  financial  institutions  whose  bankruptcy  or  liquidation  proceedings are
subject to the U.S. Bankruptcy Code, the Fund intends to comply with  provisions
under  the U.S. Bankruptcy  Code that would  allow it immediately  to resell the
collateral. There is no limitation on the  amount of the Fund's assets that  may
be  subject to repurchase agreements at any  given time. The Fund will not enter
into a repurchase agreement  with a maturity  of more than seven  days if, as  a
result,  more than 10% of the value of  its net assets would be invested in such
repurchase agreements and other illiquid investments.
 
BORROWING AND REVERSE REPURCHASE AGREEMENTS
The Fund's borrowings will not exceed 33 1/3% of the Fund's total assets,  i.e.,
the  Fund's total assets at all times will  equal at least 300% of the amount of
outstanding borrowings.  If  market fluctuations  in  the value  of  the  Fund's
portfolio  holdings or other factors cause the  ratio of the Fund's total assets
to outstanding  borrowings to  fall  below 300%,  within three  days  (excluding
Sundays  and holidays) of such event the  Fund may be required to sell portfolio
securities to restore the  300% asset coverage, even  though from an  investment
standpoint  such sales might be disadvantageous. The  Fund also may borrow up to
5% of its total assets  for temporary or emergency  purposes other than to  meet
redemptions.  Any borrowing  by the  Fund may  cause greater  fluctuation in the
value of its shares than would be the case if the Fund did not borrow.
 
The Fund's fundamental investment  limitations permit the  Fund to borrow  money
for leveraging purposes. The Fund, however, currently is 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 a vote  of
a  majority of  the Company's  Board of  Directors. In  the event  that the Fund
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 Fund's net  asset value. When the
income and gains on securities purchased with the proceeds of borrowings  exceed
the  costs  of such  borrowings, the  Fund's  earnings or  net asset  value will
increase faster than otherwise would be the case; conversely, if such income and
gains fail to exceed such  costs, the Fund's earnings  or net asset value  would
decline faster than would otherwise be the case.
 
The  Fund may  enter into  reverse repurchase  agreements. A  reverse repurchase
agreement is a borrowing transaction in which the Fund transfers possession of a
security to another party, such as a  bank or broker/dealer in return for  cash,
and
 
                   Statement of Additional Information Page 4
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
agrees  to repurchase the security in the  future at an agreed upon price, which
includes an interest component. The Fund will maintain, in a segregated  account
with a custodian, cash or liquid securities in an amount sufficient to cover its
obligations   under  reverse  repurchase   agreements  with  broker/dealers.  No
segregation is required for reverse repurchase agreements with banks.
 
SHORT SALES
The Fund is authorized  to make short  sales of securities,  although it has  no
current  intention of doing so. A short sale  is a transaction in which the Fund
sells a security  in anticipation that  the market price  of that security  will
decline.  The Fund  may make  short sales  (i) as  a form  of hedging  to offset
potential declines  in long  positions  in securities  it owns,  or  anticipates
acquiring,  and (ii)  in order to  maintain portfolio flexibility.  The Fund may
only make short sales "against the box." In this type of short sale, at the time
of the sale the Fund  owns the security it has  sold short or has the  immediate
and unconditional right to acquire the identical security at no additional cost.
 
In a short sale, the seller does not immediately deliver the securities sold and
does  not receive the proceeds from the sale. To make delivery to the purchaser,
the executing broker borrows  the securities being sold  short on behalf of  the
seller. The seller is said to have a short position in the securities sold until
it  delivers the securities sold, at which  time it receives the proceeds of the
sale. To secure its obligation to  deliver securities sold short, the Fund  will
deposit  in  a  separate account  with  its  custodian an  equal  amount  of the
securities sold short or  securities convertible into  or exchangeable for  such
securities  at no cost. The Fund could  close out a short position by purchasing
and delivering an  equal amount  of the securities  sold short,  rather than  by
delivering  securities already held by the Fund,  because the Fund might want to
continue to  receive  interest  and  dividend  payments  on  securities  in  its
portfolio that are convertible into the securities sold short.
 
The  Fund might make  a short sale "against  the box" in  order to hedge against
market risks when the Manager believes that the price of a security may decline,
causing a decline in  the value of a  security owned by the  Fund or a  security
convertible  into or  exchangeable for such  security. In such  case, any future
losses in the  Fund's long position  should be reduced  by a gain  in the  short
position.  Conversely, any gain in the long position should be reduced by a loss
in the short  position. The extent  to which such  gains or losses  in the  long
position  are reduced will depend  upon the amount of  the securities sold short
relative to  the amount  of the  securities the  Fund owns,  either directly  or
indirectly, and, in the case where the Fund owns convertible securities, changes
in  the investment values or conversion  premiums of such securities. There will
be certain additional transaction costs associated with short sales "against the
box," but the  Fund will endeavor  to offset  these costs with  income from  the
investment of the cash proceeds of short sales.
 
YANKEE BONDS
The  Fund may invest in U.S. dollar-denominated  bonds sold in the United States
by non-U.S.  issuers ("Yankee  bonds"). As  compared with  bonds issued  in  the
United  States, such bond issues  normally carry a higher  interest rate but are
less actively traded.
 
TEMPORARY DEFENSIVE STRATEGIES
The Fund may invest  in the following types  of money market instruments  (i.e.,
debt  instruments with less than 12 months remaining until maturity) denominated
in U.S. dollars or other currencies: (a) obligations issued or guaranteed by the
U.S.   or   foreign   governments,   their   agencies,   instrumentalities    or
municipalities;  (b)  obligations  of  international  organizations  designed or
supported  by  multiple  foreign  governmental  entities  to  promote   economic
reconstruction  or  development;  (c)  finance  company  obligations,  corporate
commercial  paper  and  other   short-term  commercial  obligations;  (d)   bank
obligations  (including certificates of deposit,  time deposits, demand deposits
and bankers'  acceptances);  (e)  repurchase  agreements  with  respect  to  the
foregoing;  and (f) other substantially  similar short-term debt securities with
comparable characteristics.
 
The Fund may invest  in commercial paper rated  as low as A-3  by S&P or P-3  by
Moody's or, if not rated, determined by the Manager to be of comparable quality.
Obligations  rated A-3 and P-3 are  considered by S&P and Moody's, respectively,
to have an acceptable capacity  for timely repayment. However, these  securities
may  be  more vulnerable  to adverse  effects of  changes in  circumstances than
obligations carrying higher designations.
 
PREMIUM SECURITIES
The Fund  may invest  in  income securities  bearing  coupon rates  higher  than
prevailing  market rates. Such  "premium" securities are  typically purchased at
prices greater than the principal amounts payable on maturity. The Fund will not
amortize the premium paid for such securities in calculating its net  investment
income.  As a result, in such cases the purchase of such securities provides the
Fund a higher  level of  investment income  distributable to  shareholders on  a
current basis than if the Fund purchased securities bearing current market rates
of interest. If securities purchased by the
 
                   Statement of Additional Information Page 5
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
Fund  at a premium are called or sold prior to maturity, the Fund will realize a
loss to the  extent the  call or  sale price is  less than  the purchase  price.
Additionally,  the  Fund will  realize a  loss  if it  holds such  securities to
maturity.
 
INDEXED DEBT SECURITIES
The Fund  may invest  in debt  securities  issued by  banks and  other  business
entities  not located in developing market countries that are indexed to certain
specific foreign  currency exchange  rates, interest  rates or  other  reference
rates.  The  terms of  such securities  provide that  their principal  amount is
adjusted upwards or  downwards (but ordinarily  not below zero)  at maturity  to
reflect  changes in  the exchange rate  between two currencies  (or other rates)
while the obligations are outstanding. While such securities offer the potential
for an  attractive  rate  of return,  they  also  entail the  risk  of  loss  of
principal.  New forms of such securities continue  to be developed. The Fund may
invest  in  such  securities  to  the  extent  consistent  with  its  investment
objectives.
 
STRUCTURED INVESTMENTS
The  Fund may invest a portion of  its assets in interests in entities organized
and  operated  solely   for  the   purpose  of   restructuring  the   investment
characteristics  of  Sovereign Debt.  This  type of  restructuring  involves the
deposit with  or purchase  by an  entity, such  as a  corporation or  trust,  of
specified  instruments (such  as commercial bank  loans or Brady  Bonds) and the
issuance by  that entity  of  one or  more  classes of  securities  ("Structured
Investments")   backed  by,   or  representing  interests   in,  the  underlying
instruments. The  cash flow  on the  underlying instruments  may be  apportioned
among  the  newly  issued  Structured  Investments  to  create  securities  with
different  investment  characteristics  such  as  varying  maturities,   payment
priorities  and interest  rate provisions, and  the extent of  the payments made
with respect to Structured  Investments is dependent on  the extent of the  cash
flow  on the underlying instruments. Because  Structured Investments of the type
in which  the  Fund anticipates  it  will  invest typically  involve  no  credit
enhancement,  their  credit risk  generally will  be equivalent  to that  of the
underlying instruments.
 
The Fund is permitted  to invest in  a class of  Structured Investments that  is
either  subordinated  or not  subordinated to  the right  of payment  of another
class. Subordinated  Structured Investments  typically  have higher  yields  and
present greater risks than unsubordinated Structured Investments.
 
Certain  issuers  of  Structured Investments  may  be deemed  to  be "investment
companies" as defined in  the 1940 Act.  As a result,  the Fund's investment  in
these Structured Investments may be limited by the restrictions contained in the
1940   Act  described  above  under   "Investment  Objectives  and  Policies  --
Investments in Equity Securities." Structured Investments are typically sold  in
private  placement transactions, and there currently is no active trading market
for Structured Investments.
 
STRIPPED INCOME SECURITIES
Stripped income securities are obligations representing an interest in all or  a
portion  of  the income  or  principal components  of  an underlying  or related
security, a pool of securities  or other assets. In  the most extreme case,  one
class  will receive all of the interest (the interest only or "IO" class), while
the other class will  receive all of the  principal (the principal-only or  "PO"
class). The market values of stripped income securities tend to be more volatile
in   response  to  changes  in  interest  rates  than  are  conventional  income
securities.
 
FLOATING AND VARIABLE RATE INCOME SECURITIES
Income securities may provide for floating or variable rate interest or dividend
payments. The floating  or variable  rate may be  determined by  reference to  a
known  lending rate, such as a bank's  prime rate, a certificate of deposit rate
or the London Inter  Bank Offered Rate (LIBOR).  Alternatively, the rate may  be
determined  through  an auction  or remarketing  process. The  rate also  may be
indexed to  changes  in the  values  of  interest rate  or  securities  indexes,
currency  exchange rates or other commodities. The amount by which the rate paid
on an income security  may increase or  decrease may be  subject to periodic  or
lifetime  caps. Floating and variable  rate income securities include securities
whose rates  vary inversely  with  changes in  market  rates of  interest.  Such
securities  may also pay a rate of interest determined by applying a multiple to
the variable  rate.  The extent  of  increases and  decreases  in the  value  of
securities  whose rates vary inversely with  changes in market rates of interest
generally will  be larger  than comparable  changes  in the  value of  an  equal
principal  amount  of  a  fixed rate  security  having  similar  credit quality,
redemption provisions and maturity.
 
                   Statement of Additional Information Page 6
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
 
                         OPTIONS, FUTURES AND CURRENCY
                                   STRATEGIES
 
- --------------------------------------------------------------------------------
 
SPECIAL RISKS OF OPTIONS, FUTURES AND CURRENCY STRATEGIES
The use 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
    Manager'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 Manager 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 a Fund entered into a
    short hedge  because the  Manager projected  a  decline in  the price  of  a
    security  in the Fund'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 Fund could  suffer a loss. In  either such case, the Fund
    would have been in a better position had it not hedged at all.
 
        (4) As described below, the Fund 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 Fund 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 Fund'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 Fund sell a portfolio security at
    a  disadvantageous time. The  Fund'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 Fund.
 
WRITING CALL OPTIONS
The Fund 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 Manager  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 Fund.
 
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 may be assigned  an
exercise  notice, requiring him  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  the
Fund's investment objective. When writing a call option, the Fund, in return for
the
 
                   Statement of Additional Information Page 7
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
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, the Fund 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 the Fund has  written expires, the Fund 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 Fund 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 Fund  does not  consider a
security or currency covered by  a call option to be  "pledged" as that term  is
used in the Fund's policy that limits the pledging or mortgaging of its 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 the Fund will be obligated  to
sell the security or currency at less than its market value.
 
The  premium  that the  Fund receives  for writing  a call  option is  deemed to
constitute the market value of an option. The premium the Fund 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  Manager  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  the Fund  to  write
another  call  option  on the  underlying  security  or currency  with  either a
different exercise price, expiration date or both.
 
The Fund will pay  transaction costs in connection  with the writing of  options
and  in entering into closing purchase  contracts. Transaction costs relating to
options activity  normally are  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 or currencies at the time the options
are written. From time to time, the Fund 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.
 
The  Fund 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 the Fund.
 
WRITING PUT OPTIONS
The  Fund 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.
 
The  Fund generally would  write put options in  circumstances where the Manager
wishes to purchase the underlying security or currency for the Fund's  portfolio
at  a price lower than the current market  price of the security or currency. In
such event, the Fund 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 Fund also would 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 the Fund will be obligated
to purchase the security or currency at more than its market value.
 
                   Statement of Additional Information Page 8
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
 
PURCHASING PUT OPTIONS
The Fund may purchase put options on securities, indices and currencies. As  the
holder  of a put option, the Fund has  the right to sell the underlying security
or currency  at  the exercise  price  any any  time  until (American  style)  or
(European  style)  the expiration  date. The  Fund may  enter into  closing sale
transactions with  respect to  such options,  exercise them  or permit  them  to
expire.
 
The  Fund  may purchase  a  put option  on  an underlying  security  or currency
("protective put") owned by the Fund 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 Fund, 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. For example,  a put option may be purchased
in order to protect unrealized appreciation  of a security or currency when  the
Manager  deems it desirable to continue to hold the security or currency because
of tax considerations. 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.
 
The Fund also may purchase put options at a time when the Fund does not own  the
underlying  security or  currency. By  purchasing put  options on  a security or
currency it does not own, the Fund 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 Fund 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
The Fund may purchase call options on securities, indices and currencies. As the
holder  of  a  call  option, the  Fund  would  have the  right  to  purchase the
underlying security  or  currency  at  the exercise  price  at  any  time  until
(American  style) or  (European style) the  expiration date. The  Fund may enter
into closing sale transactions  with respect to such  options, exercise them  or
permit them to expire.
 
Call  options may  be purchased  by the  Fund for  the purpose  of acquiring the
underlying security or currency for its portfolio. Utilized in this fashion, the
purchase of  call options  would enable  the  Fund 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 also  may  be useful  to  the Fund  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 Fund 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.
 
The Fund also may purchase call  options on underlying securities or  currencies
it  owns in order to protect unrealized gains on call options previously written
by  it.  A  call  option  could   be  purchased  for  this  purpose  where   tax
considerations  make  it inadvisable  to realize  such  gains through  a closing
purchase transaction.  Call options  also may  be purchased  at times  to  avoid
realizing  losses that would result in a reduction of the Fund's current return.
For example, where the Fund has written a call option on an underlying  security
or currency having a current market value below the price at which such security
or  currency was purchased  by the Fund,  an increase in  the market price could
result in  the  exercise  of  the  call option  written  by  the  Fund  and  the
realization  of a loss on the  underlying security or currency. Accordingly, the
Fund could purchase a call option  on the same underlying security or  currency,
which  could be exercised  to fulfill the Fund's  delivery obligations under its
written call (if it is exercised). This  strategy could allow the Fund to  avoid
selling  the portfolio security or currency at  a time when it has an unrealized
loss; however, the Fund 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 the
Fund's total assets at the time of purchase.
 
The Fund 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  the  Fund 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. A call option gives the Fund
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. The  Fund 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
 
                   Statement of Additional Information Page 9
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
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 the
Fund 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 the  Fund
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. The Fund 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.
The  Fund  may also  sell OTC  options and,  in connection  therewith, segregate
assets or cover its obligations with respect to OTC options written by the Fund.
The assets used as cover for OTC options written by the Fund will be  considered
illiquid unless the OTC options are sold to qualified dealers who agree that the
Fund 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.
 
The  Fund's  ability to  establish and  close  out positions  in exchange-listed
options depends  on  the existence  of  a liquid  market.  The Fund  intends  to
purchase  or write only those exchange-traded options for which there appears to
be a liquid secondary  market. 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 the Fund
will  enter into OTC  options only with  contra parties that  are expected to be
capable of  entering  into closing  transactions  with  the Fund,  there  is  no
assurance that the Fund will in fact be able to close out an OTC option position
at  a favorable price  prior to expiration.  In the extent  of insolvency of the
contra party, the Fund 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 the Fund 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 Fund 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 the Fund buys a call on an
index, it  pays a  premium and  has the  same rights  as to  such calls  as  are
indicated above. When the Fund 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 Fund's exercise of the put, to deliver to the Fund 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 Fund writes a put on an index, it receives a
premium and  the purchaser  has the  right,  prior to  the expiration  date,  to
require  the Fund  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 the Fund writes  a
call  on an  index it  cannot provide  in advance  for its  potential settlement
obligations by acquiring  and holding  the underlying securities.  The Fund  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,  the Fund 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 the Fund 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
 
                  Statement of Additional Information Page 10
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
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  Fund 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 the Fund has purchased  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 Fund 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
The Fund 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. The  Fund'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 or 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.
 
The Fund  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 the Fund's exposure to interest rate, currency exchange rate  and
stock  market fluctuations,  the Fund  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 Fund realizes a gain; if it is
more, the Fund realizes a loss. Conversely, if the offsetting sale price is more
than the original purchase price, the Fund  realizes a gain; if it is less,  the
Fund  realizes a  loss. The  transaction costs  also must  be included  in these
calculations. There can be no assurance, however, that the Fund will be able  to
enter  into  an  offsetting transaction  with  respect to  a  particular Futures
Contract at  a particular  time.  If the  Fund  is not  able  to enter  into  an
offsetting  transaction, the Fund  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
 
                  Statement of Additional Information Page 11
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
Contract  was  sold  and  the  price paid  for  the  offsetting  purchase, after
allowance for transaction costs, represents the profit or loss to the Fund.
 
The Fund's Futures transactions will be entered into for hedging purposes;  that
is,  Futures Contracts will be sold to protect against a decline in the price of
securities or  currencies that  the  Fund owns,  or  Futures Contracts  will  be
purchased  to protect the Fund 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 the Fund in order to  initiate Futures trading and to maintain the
Fund's open  positions in  Futures Contracts.  A margin  deposit made  when  the
Futures  Contract is entered  into ("initial margin") is  intended to assure the
Fund'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 modified significantly  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 Fund  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,  among  other things,  by 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  the Fund'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 Contract 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 Contract
and  option  prices  occasionally have  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 the Fund 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 Fund would  continue to  be subject  to
market  risk with respect  to the position.  In addition, except  in the case of
purchased options,  the  Fund  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
 
                  Statement of Additional Information Page 12
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                       GT GLOBAL DEVELOPING MARKETS FUND
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 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  the Fund  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.
 
The  Fund 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 the  Fund 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 Fund's  portfolio, after taking into
account unrealized profits and unrealized losses  on any contracts the Fund  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 Company's
Board of Directors without  a shareholder vote. This  limitation does not  limit
the percentage of the Fund's assets at risk to 5%.
 
FORWARD CURRENCY 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. The Fund either may
accept or make delivery of the currency at the maturity of the Forward Contract.
The Fund may also, if its contra  party agrees, prior to maturity, enter into  a
closing transaction involving the purchase or sale of an offsetting contract.
 
The  Fund engages  in forward  currency transactions  in anticipation  of, or to
protect itself against, fluctuations  in exchange rates. The  Fund 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, the Fund
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, the Fund  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. The Fund will enter into such Forward Contracts with major
U.S. or foreign banks and securities or currency dealers in accordance with  the
guidelines approved by the Company's Board of Directors.
 
                  Statement of Additional Information Page 13
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
 
The  Fund  may enter  into  Forward Contracts  either  with respect  to specific
transactions or  with respect  to the  Fund's portfolio  positions. 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 the Fund 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 Fund 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
Fund 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 the
Fund to sustain losses on these contracts and transaction costs.
 
At or before the  maturity of a  Forward Contract requiring the  Fund to sell  a
currency,  the  Fund either  may  sell a  portfolio  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  the Fund will  obtain, on  the same maturity  date, the  same
amount  of the currency that it is obligated to deliver. Similarly, the Fund may
close out a Forward Contract requiring  it to purchase a specified currency  by,
if its contra party agrees, entering into a second contract entitling it to sell
the same amount of the same currency on the maturity date of the first contract.
The  Fund 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 the Fund 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 usually are 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 the Fund 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
The  Fund 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 Fund's securities
are  denominated. Such currency hedges can  protect against price movements in a
security that  the Fund  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.
 
The  Fund  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 Fund 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 Manager  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  Fund 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.
 
                  Statement of Additional Information Page 14
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
 
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, the Fund 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 that the Fund has purchased) expose the Fund to an obligation to another
party. The Fund 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. The Fund 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 the Fund's assets are used for cover or otherwise set aside, it could  affect
portfolio  management or the Fund's ability to meet redemption requests or other
current obligations.
 
SWAPS, CAPS, FLOORS AND COLLARS. The Fund may enter into interest rate, currency
and index swaps, and may purchase or  sell related caps, floors and collars  and
other  derivative instruments. The Fund expects to enter into these transactions
primarily to preserve a return or  spread on a particular investment or  portion
of  its portfolio, to protect against  currency fluctuations, as a technique for
managing the portfolio's  duration (I.E.,  the price sensitivity  to changes  in
interest  rates) or to protect  against any increase in  the price of securities
the Fund anticipates purchasing at a later  date. The Fund intends to use  these
transactions  as hedges and will not sell  interest rate caps, floors or collars
if it does not  own securities or other  instruments providing an income  stream
roughly equivalent to what the Fund may be obligated to pay.
 
Interest rate swaps involve the exchange by the Fund with another party of their
respective  commitments to pay or receive  interest (for example, an exchange of
floating rate  payments for  fixed rate  payments) with  respect to  a  notional
amount of principal. A currency swap is an agreement to exchange cash flows on a
notional amount based on changes in the values of the reference indices.
 
The  purchase of a cap entitles the  purchaser to receive payments on a notional
principal amount from the party selling the  cap to the extent that a  specified
index  exceeds a predetermined  interest rate. The purchase  of an interest rate
floor entitles the purchaser to receive payments on a notional principal  amount
from  the party  selling the floor  to the  extent that a  specified index falls
below a predetermined interest rate  or amount. A collar  is a combination of  a
cap  and a floor that preserves a certain return within a predetermined range of
interest rates or values.
 
- --------------------------------------------------------------------------------
 
                                  RISK FACTORS
 
- --------------------------------------------------------------------------------
 
ILLIQUID SECURITIES
The Fund  may  invest up  to  15% of  its  net assets  in  illiquid  securities.
Securities  may  be considered  illiquid if  the  Fund cannot  reasonably expect
within seven days to sell the  securities for approximately the amount at  which
the Fund values such securities. 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 the sale of  liquid
securities, such as securities eligible for trading on U.S. securities exchanges
or in the over-the-counter 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 not subject to restrictions on resale.
 
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, the Fund  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
 
                  Statement of Additional Information Page 15
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
time  the  Fund  may  be  permitted  to  sell  a  security  under  an  effective
registration statement. If, during such a period, adverse market conditions were
to  develop, the Fund 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 ("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
the  Fund, however, could  affect adversely the  marketability of such portfolio
securities and the Fund might be  unable to dispose of such securities  promptly
or at favorable prices.
 
With  respect  to liquidity  determinations  generally, the  Company's  Board of
Directors has  the  ultimate  responsibility for  determining  whether  specific
securities, including restricted securities pursuant to Rule 144A under the 1933
Act,  are liquid  or illiquid.  The Board has  delegated the  function of making
day-to-day determinations  of  liquidity  to  the  Manager  in  accordance  with
procedures  approved by the  Board. The Manager  takes into account  a number of
factors in reaching  liquidity decisions  (i) the  frequency of  trading in  the
security, (ii) the number of dealers who make quotes for the security, (iii) the
number of dealers who 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 Manager monitors the liquidity  of
securities in the Fund's portfolio and periodically reports on such decisions to
the Board.
 
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, the Fund could lose its entire investment  in
any such country.
 
In  addition, even  though opportunities  for investment  may exist  in emerging
markets, any change in  the leadership or policies  of the governments of  those
countries  or  in  the leadership  or  policies  of any  other  government which
exercises a significant influence over  those countries, may halt the  expansion
of  or reverse the  liberalization of foreign  investment policies now occurring
and thereby eliminate any investment opportunities which may currently exist.
 
Investors should note that upon the accession to power of authoritarian regimes,
the governments of a number of Latin American countries previously  expropriated
large  quantities of  real and personal  property similar to  the property which
will be  represented by  the securities  purchased by  the Fund.  The claims  of
property  owners against those governments were never finally settled. There can
be no assurance  that any property  represented by securities  purchased by  the
Fund  will not also be expropriated,  nationalized, or otherwise confiscated. If
such confiscation were to  occur, the Fund could  lose its entire investment  in
such  countries. The Fund's investments would similarly be adversely affected by
exchange control regulation in any of those countries.
 
    RELIGIOUS AND  ETHNIC STABILITY.  Certain countries  in which  the Fund  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 the Fund'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
 
                  Statement of Additional Information Page 16
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
political, social and economic instability could disrupt the principal financial
markets  in which the Fund invests and  adversely affect the value of the Fund's
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 the Fund. These  restrictions
or  controls may at times limit or preclude investment in certain securities and
may increase the cost and expenses  of the Fund. 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.  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. The Fund 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 securities held by the Fund 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 the Fund 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 Manager 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  and  the  U.S.  government.  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  the Fund, under  normal circumstances, will
invest a substantial portion  of its total assets  in the securities of  foreign
issuers which are denominated in foreign currencies, the strength or weakness of
the  U.S. dollar against  such foreign currencies  will account for  part of the
Fund'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  the
Fund's  holdings  of  securities  and cash  denominated  in  such  currency and,
therefore, will cause an overall decline in  the Fund's net asset value and  any
net  investment  income and  capital gains  derived from  such securities  to be
distributed in U.S. dollars to shareholders of the Fund. Moreover, if the  value
of  the foreign currencies in which the  Fund receives its income falls relative
to the  U.S.  dollar between  receipt  of the  income  and the  making  of  Fund
distributions, the Fund may be required to liquidate securities in order to make
distributions  if  the Fund  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 movement of  interest
rates,  the pace of business activity in  certain other countries and the United
States, and other economic and financial conditions affecting the world economy.
 
Although the Fund values its assets daily in terms of U.S. dollars, it does  not
intend  to convert  its holdings  of foreign currencies  into U.S.  dollars on a
daily basis. The  Fund 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  are buying and selling
various currencies. Thus, a dealer may offer  to sell a foreign currency to  the
Fund  at one  rate, while  offering a  lesser rate  of exchange  should the Fund
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
 
                  Statement of Additional Information Page 17
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                       GT GLOBAL DEVELOPING MARKETS FUND
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  the  Fund  are
uninvested  and no return is  earned thereon. The inability  of the Fund to make
intended security purchases due to settlement  problems could cause the Fund  to
miss  attractive opportunities. Inability to dispose of a portfolio security due
to settlement  problems  either  could result  in  losses  to the  Fund  due  to
subsequent  declines in  value of  the portfolio  security or,  if the  Fund has
entered into a contract to sell the security, could result in possible liability
to the purchaser. The Manager  will consider such difficulties when  determining
the  allocation of the Fund's assets, although the Manager does not believe that
such difficulties will have  a material adverse effect  on the Fund's  portfolio
trading activities.
 
The  Fund may  use foreign  custodians, which may  involve risks  in addition to
those related to the  use of U.S. custodians.  Such risks include  uncertainties
relating  to (i) determining  and monitoring the  financial strength, reputation
and standing of the foreign  custodian, (ii) maintaining appropriate  safeguards
to  protect the Fund's investments and  (iii) possible difficulties in obtaining
and enforcing judgments against such custodians.
 
    WITHHOLDING TAXES. The Fund's net investment income from foreign  securities
may  be subject  to withholding taxes  by the foreign  issuer's country, thereby
reducing that income or delaying the receipt of income where those taxes may  be
recaptured. See "Taxes."
 
    CONCENTRATION.  To the extent the Fund  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 Manager  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 the Fund.
 
    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
United  States 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 the 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
 
                  Statement of Additional Information Page 18
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                       GT GLOBAL DEVELOPING MARKETS FUND
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 of  which  factors  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.
 
Many  of the Asia Pacific region countries may be subject to a greater degree of
social, political  and economic  instability  than is  the  case in  the  United
States. Such instability may result from, among other things, the following: (i)
authoritarian  governments  or military  involvement  in political  and economic
decision making, and changes  in government through extra-constitutional  means;
(ii) popular unrest associated with demands for improved political, economic and
social  conditions;  (iii) internal  insurgencies;  (iv) hostile  relations with
neighboring countries; and (v) ethnic,  religious and racial disaffection.  Such
social,  political  and  economic instability  could  significantly  disrupt the
principal financial markets in which the  Fund invests and adversely affect  the
value  of the Fund's assets. In addition,  there may be the possibility of asset
expropriations or future confiscatory levels of taxation possibly may affect the
Fund.
 
    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 equity
securities of  companies  in emerging  markets  may entail  greater  risks  than
investing  in equity securities in developed  countries. These risks include (i)
less social, political and  economic stability; (ii) the  small current size  of
the  markets for such securities and the  currently low or nonexistent volume of
trading, which result in  a lack of liquidity  and in greater price  volatility;
(iii)  certain  national  policies  which  may  restrict  the  Fund's investment
opportunities, including  restrictions on  investment in  issuers or  industries
deemed  sensitive  to national  interests; (iv)  foreign  taxation; and  (v) the
absence of  developed  structures governing  private  or foreign  investment  or
allowing for judicial redress for injury to private property.
 
Several  of  the Asia  Pacific region  countries have  or in  the past  have had
hostile relationships  with neighboring  nations  or have  experienced  internal
insurgency.  Thailand has experienced  border conflicts with  Laos and Cambodia,
and India is engaged in border disputes with several of its neighbors, including
China and Pakistan. An uneasy truce exists between North Korea and South  Korea,
and the recurrence of hostilities remains possible. Reunification of North Korea
and South
 
                  Statement of Additional Information Page 19
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
Korea could have a detrimental effect on the economy of South Korea. Also, China
continues  to claim sovereignty over Taiwan  and recently has conducted military
maneuvers near Taiwan.
 
The economies of most of the Asia Pacific region countries are heavily dependent
upon international  trade  and  are accordingly  affected  by  protective  trade
barriers  and the economic conditions of their trading partners, principally the
United States, Japan,  China and the  European Community. The  enactment by  the
United  States  or  other  principal  trading  partners  of  protectionist trade
legislation, reduction of foreign investment in the local economies and  general
declines  in  the  international  securities markets  could  have  a significant
adverse effect upon the securities markets of the Asia Pacific region countries.
In addition,  the  economies of  some  of  the Asia  Pacific  region  countries,
Australia and Indonesia, for example, are vulnerable to weakness in world prices
for their commodity exports, including crude oil.
 
China  recently assumed sovereignty over Hong  Kong in July 1997. Although China
has committed by treaty to preserve the economic and social freedoms enjoyed  in
Hong  Kong for fifty years, the continuation of the current form of the economic
system in Hong Kong will  depend on the actions of  the government of China.  In
addition,  such reversion  has increased sensitivity  in Hong  Kong to political
developments and statements by public  figures in China. Business confidence  in
Hong  Kong, therefore,  can be significantly  affected by  such developments and
statements, which in turn can affect markets and business performance.
 
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
the Hong Kong  markets and  dollar. However, factors  exist that  are likely  to
mitigate  this risk. First, China  has stated its intention  to implement a "one
country, two  systems" policy,  which would  preserve monetary  sovereignty  and
leave control in the hands of the Hong Kong Monetary Authority ("HKMA").
 
Second,  fixed  rate  parity  with  the  U.S.  dollar  is  seen  as  critical to
maintaining investors'  confidence  in  the transition  to  Chinese  rule,  and,
therefore, it is anticipated that, if international investors lose confidence in
Hong  Kong  dollar assets,  the HKMA  would intervene  to support  the currency,
though such  intervention cannot  be  assured. Third,  Hong Kong's  and  China's
sizable  combined foreign exchange reserve  may be used to  support the value of
the Hong Kong dollar, provided that China does not appropriate such reserves for
other uses, which is not anticipated but cannot be assured. Finally, China would
be likely to experience significant adverse political and economic  consequences
if  confidence  in the  Hong Kong  dollar and  the territory  assets were  to be
endangered.
 
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 into U.S.  dollars and on repatriation of
capital invested. In the event  of such expropriation, nationalization or  other
confiscation  by any country, the  Fund 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.
 
    SOVEREIGN  DEBT. Sovereign Debt generally offers high yields, reflecting not
only perceived  credit risk,  but also  the  need to  compete with  other  local
investments  in domestic financial markets. Certain Latin American countries are
among the  largest  debtors  to  commercial banks  and  foreign  governments.  A
sovereign debtor's willingness or ability to repay principal and interest due in
a  timely  manner  may  be  affected by,  among  other  factors,  its  cash flow
situation, the extent of  its foreign reserves,  the availability of  sufficient
foreign  exchange on the  date a payment is  due, the relative  size of the debt
service burden to the economy as a whole, the sovereign debtor's policy  towards
the  International  Monetary  Fund  and the  political  constraints  to  which a
sovereign debtor  may  be  subject.  Sovereign  debtors  may  default  on  their
Sovereign Debt.
 
                  Statement of Additional Information Page 20
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
Sovereign  debtors may also be dependent  on expected disbursements from foreign
governments, multilateral agencies  and others  abroad to  reduce principal  and
interest  arrearages  on  their  debt.  The  commitment  on  the  part  of these
governments, agencies and others to  make such disbursements may be  conditioned
on  a  sovereign debtor's  implementation  of economic  reforms  and/or economic
performance and  the timely  service of  such debtor's  obligations. Failure  to
implement  such reforms,  achieve such levels  of economic  performance or repay
principal or interest  when due, may  result in the  cancellation of such  third
parties'  commitments to lend  funds to the sovereign  debtor, which may further
impair such debtor's ability or willingness to timely service its debts.
 
In recent years, some of the Latin American countries in which the Fund  expects
to  invest have encountered difficulties in servicing their Sovereign Debt. Some
of these  countries  have withheld  payments  of interest  and/or  principal  of
Sovereign  Debt. These difficulties  have also led  to agreements to restructure
external debt obligations -- in particular, commercial bank loans, typically  by
rescheduling  principal  payments,  reducing interest  rates  and  extending new
credits to finance interest payments on existing debt. In the future, holders of
Sovereign Debt may be requested to participate in similar reschedulings of  such
debt.
 
The  ability  of Latin  American governments  to make  timely payments  on their
Sovereign Debt is  likely to be  influenced strongly by  a country's balance  of
trade  and its access to trade and  other international credits. A country whose
exports are concentrated in a few  commodities could be vulnerable to a  decline
in  the  international prices  of  one or  more  of such  commodities. Increased
protectionism on the part of a  country's trading partners could also  adversely
affect its exports.
 
    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 securities held by the Fund 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  the Fund 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 Manager 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  and  the  U.S.  government.  In  addition,  where public
information is  available,  it  may  be  less  reliable  than  such  information
regarding  U.S. issuers. In addition, for companies that keep accounting records
in local currency, inflation accounting  rules in some Latin American  countries
require,  for  both  tax  and  accounting  purposes,  that  certain  assets  and
liabilities be restated on the company's balance sheet in order to express items
in terms  of currency  of constant  purchasing power.  Inflation accounting  may
indirectly  generate  losses or  profits. There  is substantially  less publicly
available  information  about  foreign   companies,  including  Latin   American
companies,  and  the  governments of  Latin  American countries  than  there are
reports and  ratings published  about U.S.  companies and  the U.S.  government.
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.
 
- --------------------------------------------------------------------------------
 
                             INVESTMENT LIMITATIONS
 
- --------------------------------------------------------------------------------
 
The Fund's investment objectives  may not be changed  without the approval of  a
majority of its outstanding voting securities. As defined in the 1940 Act and as
used  in  this Statement  of Additional  Information a  "majority of  the Fund's
outstanding voting  securities"  means the  lesser  of  (i) 67%  of  the  shares
represented  at a meeting at  which more than 50%  of the outstanding shares are
represented and (ii) more than 50%  of the outstanding shares. In addition,  the
Fund  has adopted the following fundamental  investment limitations that may not
be changed without approval of a majority of its outstanding voting securities.
 
                  Statement of Additional Information Page 21
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
 
The Fund may not:
 
        (1) issue senior  securities or  borrow money  in amounts  in excess  of
    those permitted under the 1940 Act;
 
        (2) make an investment in any one industry if the investment would cause
    the aggregate value of all investments in such industry to equal 25% or more
    of  the Fund's total assets; provided that this limitation does not apply to
    investments in securities issued or  guaranteed by the U.S. government,  its
    agencies or instrumentalities;
 
        (3)  purchase  securities  on  margin,  except  for  short-term  credits
    necessary for clearance of portfolio  transactions and except that the  Fund
    may  make margin  deposits in  connection with  its use  of options, futures
    contracts, options  on futures  contracts,  forward currency  contracts  and
    other financial instruments;
 
        (4)  engage in the business of underwriting securities of other issuers,
    except to the extent that, in  connection with the disposition of  portfolio
    securities,  the Fund may be deemed  an underwriter under federal securities
    laws and except that the Fund may write options;
 
        (5) make short sales of securities or maintain a short position,  except
    that  the Fund may  maintain short positions  in connection with  its use of
    options,  futures  contracts,  options  on  futures  contracts  and  forward
    currency contracts and may sell short "against the box;"
 
        (6)  purchase  or  sell  real  estate  (including  real  estate  limited
    partnership interest),  provided  that the  Fund  may invest  in  securities
    secured  by, or issued by companies that  invest in real estate or interests
    therein;
 
        (7) purchase or sell commodities or commodity contracts, except that the
    Fund may  sell  commodities received  upon  the exercise  of  warrants,  may
    purchase  or  sell  financial  and currency  futures  contracts  and options
    thereon, may purchase and sell forward contracts, may engage in transactions
    in  foreign  currencies  and  may  purchase  or  sell  options  on   foreign
    currencies; or
 
        (8)  make  loans,  except  through loans  or  portfolio  instruments and
    repurchase agreements, provided  that for purposes  of this restriction  the
    acquisition  of  bonds, debentures  or other  debt instruments  or interests
    therein and  investment  in government  obligations,  short-term  commercial
    paper,  certificates of deposit and bankers' acceptances shall not be deemed
    to be the making of a loan.
 
For purposes of the concentration policy of the Fund contained in limitation (2)
above, the Fund intends  to comply with the  SEC staff position that  securities
issued  or guaranteed  as to  principal and interest  by any  one single foreign
government,  or  by  all  supranational  organizations  in  the  aggregate,  are
considered to be securities of issuers in the same industry.
 
In  addition, to  comply with  federal tax  requirements for  qualification as a
"regulated investment  company," the  Fund's investments  will be  limited in  a
manner such that, at the close of each quarter of its taxable year, (a) not more
than  25% of the value of its total assets are invested in the securities (other
than U.S government securities or  the securities of other regulated  investment
companies)  of any one  issuer and (b)  at least 50%  of the value  of its total
assets are  represented by  cash  and cash  items, U.S.  government  securities,
securities  of other registered investment  companies and other securities, with
these other securities limited, in respect of any one issuer, to an amount  that
does  not exceed 5% of the value of its total assets and that does not represent
more than 10%  of the issuer's  outstanding voting securities  ("Diversification
Requirements").  These tax-related limitations  may be changed  by the Company's
Board of Directors to the extent necessary to comply with changes to  applicable
tax requirements.
 
The  Fund's other  investment policies and  limitations described  herein may be
changed by  the  Company's  Board of  Directors  without  shareholder  approval,
provided  that any such policies  and limitations as so  amended do not conflict
with the Fund's fundamental investment limitations.
 
                  Statement of Additional Information Page 22
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
 
                             EXECUTION OF PORTFOLIO
                                  TRANSACTIONS
 
- --------------------------------------------------------------------------------
 
Subject to policies established by the Company's Board of Directors, the Manager
is responsible for the  execution of the Fund's  portfolio transactions and  the
selection of broker/dealers who execute such transactions on behalf of the Fund.
In  executing portfolio transactions, the Manager seeks the best net results for
the Fund,  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
Manager 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 the Fund may engage in soft dollar arrangements  for
research  services, as described below, the Fund  has no obligation to deal with
any broker/dealer  or group  of  broker/dealers in  the execution  of  portfolio
transactions.
 
Debt  securities generally are traded  on a "net" basis  with a dealer acting as
principal for its own account without a stated commission, although the price of
the security  usually  includes  a  profit  to  the  dealer.  U.S.  and  foreign
government  securities and money market instruments  generally are traded in the
OTC markets. In underwritten  offerings, securities usually  are purchased at  a
fixed  price which  includes an  amount of  compensation to  the underwriter. On
occasion, securities may be purchased directly from an issuer, in which case  no
commissions  or discounts  are paid.  Broker/dealers may  receive commissions on
futures, currency and options transactions.
 
Consistent with the  interests of the  Fund, the Manager  may select brokers  to
execute  the Fund's  portfolio transactions,  on the  basis of  the research and
brokerage services they provide to the Manager for its use in managing the  Fund
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 brokers are in addition to, and not in lieu of,  the
services  required to be performed by  the Manager under the Management Contract
(defined below). A commission paid to such brokers may be higher than that which
another qualified broker would have charged for effecting the same  transaction,
provided  that  the Manager  determines in  good faith  that such  commission is
reasonable in  terms  either  of  that particular  transaction  or  the  overall
responsibility  of the Manager  to the Fund  and its other  clients and that the
total commissions  paid  by the  Fund  will be  reasonable  in relation  to  the
benefits  received by the Fund over the long term. Research services may also be
received from dealers who execute Fund transactions in OTC markets.
 
The Manager  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 the Fund toward payment of the Fund's expenses, such  as
transfer agent and custodian fees.
 
Investment  decisions for the Fund and  for other investment accounts managed by
the Manager  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 the Fund.  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 the Fund  is concerned, in  other cases, the Manager
believes that coordination and the ability to participate in volume transactions
will be beneficial to the Fund.
 
Under a policy adopted by the Company's  Board of Directors, and subject to  the
policy   of  obtaining  the  best  net  results,  the  Manager  may  consider  a
broker/dealer's sale of the shares of the Fund and the other funds for which the
Manager serves as investment  manager in selecting brokers  and 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 Fund and such other funds.
 
The   Fund   contemplates   purchasing  most   foreign   equity   securities  in
over-the-counter 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
 
                  Statement of Additional Information Page 23
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
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 the  Fund 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  the
Fund may invest generally are traded in the OTC markets.
 
The Fund contemplates that, consistent with the policy of obtaining the best net
results,  brokerage transactions may be conducted through certain companies that
are members of the Liechtenstein Global Trust. The Company's Board of  Directors
has  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.
 
PORTFOLIO TRADING AND TURNOVER
The Fund engages in  portfolio trading when the  Manager has concluded that  the
sale of a security owned by the Fund and/ or the purchase of another security of
better  value can  enhance principal and/or  increase income. A  security may be
sold to avoid  any prospective decline  in market  value, or a  security may  be
purchased  in  anticipation  of  a  market  rise.  Consistent  with  the  Fund's
investment objective, a  security also  may be  sold and  a comparable  security
purchased  coincidentally in order to take advantage of what is believed to be a
disparity in the normal yield and price relationship between the two securities.
Although the Fund does not intend generally to trade for short-term profits, the
securities in the Fund's portfolio will be sold whenever management believes  it
is  appropriate to  do so,  without regard  to the  length of  time a particular
security may have been held. Portfolio  turnover rate is calculated by  dividing
the  lesser of sales or purchases of  portfolio securities by the Fund's average
month-end portfolio  values  excluding  short-term  investments.  The  portfolio
turnover  rate will not  be a limiting  factor when the  Manager deems portfolio
changes appropriate. Higher portfolio turnover involves correspondingly  greater
brokerage  commissions  and  other transaction  costs  that the  Fund  will bear
directly and may result in the realization of net capital gains that are taxable
when distributed to the Fund's shareholders. For the fiscal years ended December
31, 1996 and 1995, the  Fund's portfolio turnover rates were      %  and      %,
respectively.
 
                  Statement of Additional Information Page 24
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
 
                            DIRECTORS AND EXECUTIVE
                                    OFFICERS
 
- --------------------------------------------------------------------------------
 
The Company's Directors and Executive Officers are listed below.
 
<TABLE>
<CAPTION>
NAME, POSITION(S) WITH THE               PRINCIPAL OCCUPATIONS AND BUSINESS
COMPANY AND ADDRESS                      EXPERIENCE FOR PAST 5 YEARS
- ---------------------------------------  ------------------------------------------------------------------------------------------
<S>                                      <C>
William J. Guilfoyle*, 39                President, GT Global since 1995; Director, GT Global since 1991; Senior Vice President and
Director, Chairman of the Board and      Director of Sales and Marketing, GT Global from May 1992 to April 1995; Vice President and
President                                Director of Marketing, GT Global from 1987 to 1992; Director, Liechtenstein Global Trust
50 California Street                     AG (holding company of the various international LGT 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 director or trustee of each of the other investment companies registered under the 1940
                                         Act that is managed or administered by Chancellor LGT Asset Management, Inc. ("Chancellor
                                         LGT").
 
C. Derek Anderson, 56                    President, Plantagenet Capital Management, LLC (an investment partnership); Chief
Director                                 Executive Officer, Plantagenet Holdings, Ltd. (an investment banking firm); Director,
220 Sansome Street                       Anderson Capital Management, Inc., since 1988; Chief Executive Officer, Anderson Capital
Suite 400                                Management, Inc., from 1991 to July 1997; Director, PremiumWear, Inc. (formerly
San Francisco, CA 94104                  Munsingwear, Inc.) (a casual apparel company), and Director, "R" Homes, Inc. and various
                                         other companies. Mr. Anderson is also a director or trustee of each of the other
                                         investment companies registered under the 1940 Act that is managed or administered by
                                         Chancellor LGT.
 
Frank S. Bayley, 58                      Partner with Baker & McKenzie (a law firm); Director and Chairman, C.D. Stimson Company (a
Director                                 private investment company). Mr. Bayley also is a director or trustee of each of the other
Two Embarcadero Center                   investment companies registered under the 1940 Act that is managed or administered by the
Suite 2400                               Manager.
San Francisco, CA 94111
 
Arthur C. Patterson, 54                  Managing Partner, Accel Partners (a venture capital firm). He also serves as a director of
Director                                 various computing and software companies. Mr. Patterson also is a director or trustee of
One Embarcadero Center                   each of the other investment companies registered under the 1940 Act that is managed or
Suite 3820                               administered by the Manager.
San Francisco, CA 94111
 
Ruth H. Quigley, 62                      Private investor; and President, Quigley Friedlander & Co., Inc. (a financial advisory
Director                                 services firm) from 1984 to 1986. Miss Quigley also is a director or trustee of each of
1055 California Street                   the other investment companies registered under the 1940 Act that is managed or
San Francisco, CA 94108                  administered by the Manager.
 
Robert G. Wade, Jr.*, 70                 Consultant to the Manager; Chairman of the Board of Chancellor Capital Management, Inc.
Director                                 from January 1995 to October 1996; President, Chief Executive Officer and Chairman of the
1166 Avenue of the Americas              Board of Chancellor Capital Management, Inc. from 1988 to January 1995.
New York, NY 10036
</TABLE>
 
- --------------
*  Mr. Guilfoyle and Mr. Wade are "interested persons" of the Company as defined
by the 1940 Act due to their affiliation with the LGT companies.
 
                  Statement of Additional Information Page 25
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
 
<TABLE>
<S>                               <C>
Kenneth W. Chancey, 52            Vice President -- Mutual Fund Accounting, the Manager since 1992; and
Vice President and                Vice President, Putnam Fiduciary Trust Company from 1989 to 1992.
Principal Accounting Officer
50 California Street
San Francisco, CA 94111
 
Helge K. Lee, 51                  Executive Vice President, Asset Management Division, Liechtenstein
Vice President and Secretary      Global Trust since October 1996; Senior Vice President, LGT Asset
1166 Avenue of the Americas       Management, GT Global, GT Services and G.T. Insurance from February 1996
New York, NY 10036                to October 1996; Vice President, the Manager, LGT Asset Management, GT
                                  Global, GT Services and G.T. Insurance from May 1994 to February 1996;
                                  General Counsel, the Manager, LGT Asset Management, GT Global, GT
                                  Services and G.T. Insurance from May 1994 to October 1996; Secretary,
                                  the Manager, LGT Asset Management, GT Global, GT Services and G.T.
                                  Insurance from May 1994 to October 1996; Senior Vice President, General
                                  Counsel and Secretary, Strong/ Corneliuson Management, Inc.; and
                                  Secretary, each of the Strong Funds from October 1991 to May 1994.
</TABLE>
 
                         ------------------------------
 
The  Board of Directors 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 Directors, reviewing audits  of the Company and
its funds  and recommending  firms  to serve  as  independent auditors  for  the
Company.  Each of the Directors  and officers of the  Company is also a Director
and officer of  G.T. Investment Portfolios,  Inc., and GT  Global Floating  Rate
Fund,  Inc., a Trustee and officer of G.T. Global Growth Series and a Trustee of
G.T. Global Eastern  Europe Fund,  G.T. Global Variable  Investment Trust,  G.T.
Global  Variable  Investment Series,  Global  High Income  Portfolio  and Global
Investment Portfolio, which are also registered investment companies managed  by
the  Manager. Each Director and Officer serves in total as a Director or Trustee
and Officer, respectively, of 11 registered investment companies with 41  series
managed  or administered by the Manager. The  Company pays each Director, who is
not a director, officer  or employee of the  Manager or any affiliated  company,
$5,000 per annum, plus $300 per Fund for each meeting of the Board attended, and
reimburses  travel and other expenses incurred  in connection with attendance at
such meetings. Other Directors and  officers receive no compensation or  expense
reimbursement  from the Company. For the fiscal year ended October 31, 1996, Mr.
Anderson, Mr. Bayley,  Mr. Patterson and  Miss Quigley, who  are not  directors,
officers or employees of the Manager or other affiliated company, received total
compensation  of $30,200,  $30,200, $26,600  and 30,200,  respectively, from the
Company for which  he or she  serves as a  Director. For the  fiscal year  ended
October  31,  1996 Mr.  Anderson,  Mr. Bayley,  Mr.  Patterson and  Miss Quigley
received  total  compensation   of  $80,100,  $80,100,   $72,600  and   $80,100,
respectively,  from  the investment  companies  managed or  administered  by the
Manager for which he or she serves  as a Director or Trustee. Fees and  expenses
disbursed to the Directors contained no accrued or payable pension or retirement
benefits.  As of February 1, 1997, the Officers and Directors and their families
as a group owned in the aggregate beneficially or of record less than 1% of  the
outstanding shares of the Fund or of all the Company's funds in the aggregate.
 
                  Statement of Additional Information Page 26
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
 
                                   MANAGEMENT
 
- --------------------------------------------------------------------------------
 
INVESTMENT MANAGEMENT AND ADMINISTRATION SERVICES
The  Manager serves as the Fund's  investment manager and administrator under an
Investment  Management  and  Administration  Contract  ("Management   Contract")
between  the Company and  the Manager. As  investment manager and administrator,
the Manager makes  all investment  decisions for  the Fund  and administers  the
Fund's  affairs. Among other things, the Manager furnishes the services and pays
the compensation  and travel  expenses  of persons  who perform  the  executive,
administrative,  clerical and bookkeeping functions of the Company and the Fund,
and provides  suitable  office  space,  necessary  small  office  equipment  and
utilities.  For these services, the Fund  pays the Manager investment management
and administration fees, based on the Fund's average daily net assets,  computed
daily  and  paid monthly,  at the  annualized rate  of .975%  on the  first $500
million, .95% on the next $500 million, .925% on the next $500 million, and .90%
on amounts thereafter.
 
The Management Contract  may be renewed  for one-year terms,  provided that  any
such  renewal  has  been specifically  approved  at  least annually  by  (i) the
Company's Board  of Directors,  or  by the  vote of  a  majority of  the  Fund's
outstanding  voting securities (as defined in the 1940 Act), and (ii) a majority
of Directors  who are  not parties  to the  Management Contract  or  "interested
persons"  of any such  party (as defined in  the 1940 Act), cast  in person at a
meeting called  for  the  specific  purpose of  voting  on  such  approval.  The
Management  Contract provides that with respect to  the Fund, the Company or the
Manager may  terminate the  Contract without  penalty upon  sixty days'  written
notice.  The Management  Contract terminates automatically  in the  event of its
assignment (as defined in the 1940 Act).
 
The  following  table  discloses  the   amount  of  investment  management   and
administration fees paid by the Fund to the Manager during the Fund's last three
fiscal years:
 
<TABLE>
<CAPTION>
YEAR ENDED DECEMBER 31,                                                                                          AMOUNT PAID
- -----------------------------------------------------------------------------------------------------------  -------------------
<S>                                                                                                          <C>
1996.......................................................................................................       $
1995.......................................................................................................
1994.......................................................................................................
</TABLE>
 
DISTRIBUTION SERVICES
The  Fund's Advisor  Class shares  are offered  continuously through  the Fund's
principal underwriter  and distributor,  GT Global,  on a  "best efforts"  basis
without a sales charge or a contingent deferred sales charge.
 
TRANSFER AGENCY AND ACCOUNTING AGENCY SERVICES
The  Transfer  Agent  has  been  retained by  the  Fund  to  perform shareholder
servicing, reporting  and general  transfer agent  functions for  the Fund.  For
these  services, the Transfer Agent receives an annual maintenance fee of $17.50
per account, a new account  fee of $4.00 per account,  a per transaction fee  of
$1.75 for all transactions other than exchanges and a per exchange fee of $2.25.
The Transfer Agent also is reimbursed by the Fund for its out-of-pocket expenses
for  such  items as  postage, forms,  telephone  charges, stationery  and office
supplies. The Manager serves as the Fund's pricing and accounting agent.
 
EXPENSES OF THE FUND
The Fund pays  all expenses  not assumed  by the  Manager, GT  Global and  other
agents.  These  expenses include,  in  addition to  the  advisory, distribution,
transfer agency,  pricing and  accounting agency  and brokerage  fees  discussed
above, legal and audit expenses, custodian fees, directors' fees, organizational
fees,  fidelity bond and other insurance premiums, taxes, extraordinary expenses
and the expenses  of reports and  prospectuses sent to  existing investors.  The
allocation  of general Company  expenses and expenses shared  among the Fund and
other funds organized as series of the  Company are allocated on a basis  deemed
fair and equitable, which may be based on the relative net assets of the Fund or
the  nature of  the services performed  and relative applicability  to the Fund.
Expenditures, including costs incurred in  connection with the purchase or  sale
of  portfolio  securities, which  are capitalized  in accordance  with generally
accepted accounting principles applicable to investment companies, are accounted
for as capital items and  not as expenses. The ratio  of the Fund's expenses  to
its  relative net assets can be expected to be higher than the expense ratios of
funds investing solely in domestic securities, since the cost of maintaining the
custody of foreign securities and the rate of investment management fees paid by
the Fund generally are higher than the comparable expenses of such other funds.
 
                  Statement of Additional Information Page 27
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
 
                            VALUATION OF FUND SHARES
 
- --------------------------------------------------------------------------------
 
As described in the Prospectus,  the Fund's net asset  value per share for  each
class  of shares is determined  at the close of regular  trading on the New York
Stock Exchange  ("NYSE")  (currently 4:00  p.m.  Eastern time,  unless  weather,
equipment  failure or  other factors contribute  to an earlier  closing time) on
each business day the NYSE is open  for business. Currently, the NYSE is  closed
on  weekends and on certain days relating  to the following holidays: New Year's
Day,  Presidents'  Day,  Good  Friday,  Memorial  Day,  July  4th,  Labor   Day,
Thanksgiving Day and Christmas Day.
 
The Fund's portfolio securities and other assets are valued as follows:
 
Equity  securities, including  ADRs, ADSs,  and EDRs,  that are  traded on stock
exchanges, are valued at the last sale price on the exchange or in the principal
over-the-counter market in which such securities are traded, as of the close  of
business  on the day the  securities are being valued  or, lacking any sales, at
the last available bid price. In cases where securities are traded on more  than
one  exchange,  the securities  are  valued on  the  exchange determined  by the
Manager to be the primary market.
 
Long-term debt obligations are valued at  the mean of representative quoted  bid
and  asked prices for such  securities or, if such  prices are not available, at
prices for securities of  comparable maturity, quality  and type; however,  when
the  Manager deems it appropriate, prices obtained for the day of valuation from
a bond pricing  service will be  used. Short-term investments  are amortized  to
maturity  based  on  their  cost,  adjusted  for  foreign  exchange translation,
provided such valuations represent fair value.
 
Options on indices, securities and currencies  purchased by the Fund are  valued
at  their last bid price  in the case of  listed options or, in  the case of OTC
options, at the 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. The value of  each security denominated in a currency  other
than  U.S. dollars will be translated into U.S. dollars at the prevailing market
rate as  determined by  the Manager  on  that day.  When market  quotations  for
futures  and options on  futures held by  the Fund are  readily available, those
positions will be valued based upon such quotations.
 
Securities and  other  assets  for  which  market  quotations  are  not  readily
available  (including restricted securities which  are subject to limitations as
to their sale) are valued at fair value as determined in good faith by or  under
the  direction of  the Company's  Board of  Directors. The  valuation procedures
applied in any specific instance are likely to vary from case to case.  However,
consideration  generally is  given to the  financial position of  the issuer and
other fundamental analytical data relating to  the investment and to the  nature
of the restrictions on disposition of the securities (including any registration
expenses  that might be borne by the  Fund in connection with such disposition).
In addition, specific factors also generally are considered, such as the cost of
the investment, the  market value  of any  unrestricted securities  of the  same
class  (both at the time of purchase and  at the time of valuation), the size of
the holding, the  prices of any  recent transactions or  offers with respect  to
such securities and any available analysts' reports regarding the issuer.
 
The  fair value  of any  other assets is  added to  the value  of all securities
positions to  arrive  at  the value  of  the  Fund's total  assets.  The  Fund's
liabilities,  including  accruals  for  expenses, are  deducted  from  its total
assets. Once the total  value of the  Fund's net assets  is so determined,  that
value  is  then divided  by the  total number  of shares  outstanding (excluding
treasury shares), and the result, rounded to  the nearer cent, is the net  asset
value per share.
 
Any assets or liabilities initially expressed in terms of foreign currencies are
translated into U.S. dollars at the official exchange rate or at the mean of the
current  bid and asked  prices of such  currencies against the  U.S. dollar last
quoted by a major  bank that is  a regular participant  in the foreign  exchange
market  or on the basis of a pricing  service that takes into account the quotes
provided by a  number of such  major banks.  If none of  these alternatives  are
available, or none are deemed to provide a suitable methodology for converting a
foreign  currency into U.S. dollars, the Board of Directors, in good faith, will
establish a conversion rate for such currency.
 
European, Far Eastern, or Latin American  securities trading may not take  place
on  all days on which the NYSE is open. Further, trading takes place in Japanese
markets on certain Saturdays and in various foreign markets on days on which the
NYSE is not open. In addition, trading in securities on European and Far Eastern
securities exchanges and OTC markets
 
                  Statement of Additional Information Page 28
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
generally is completed well before  the close of the  business day in New  York.
Consequently,  the calculation of the Fund's net  asset value may not take place
contemporaneously with the determination of the prices of securities held by the
Fund. Events affecting the values of portfolio securities that occur between the
time their prices are determined  and the close of  regular trading on the  NYSE
will  not be reflected in  the Fund's net asset  value unless the Manager, under
the supervision  of  the  Company's  Board of  Directors,  determines  that  the
particular  event  would materially  affect net  asset value.  As a  result, the
Fund's net asset  value may be  significantly affected by  such trading on  days
when a shareholder cannot purchase or redeem shares of the Fund.
 
- --------------------------------------------------------------------------------
 
                         INFORMATION RELATING TO SALES
                                AND REDEMPTIONS
 
- --------------------------------------------------------------------------------
 
PAYMENT AND TERMS OF OFFERING
Payment  for Advisor Class shares purchased should accompany the purchase order,
or funds should be wired to the  Transfer Agent as described in the  Prospectus.
Payment  for Fund shares, other than by wire  transfer, must be made by check or
money order drawn on a U.S. bank. Checks or money orders must be payable in U.S.
dollars.
 
As a condition of this offering, if an order to purchase either class of  shares
is  cancelled due to nonpayment (for example, on account of a check returned for
"not sufficient funds"), the person who  made the order will be responsible  for
any  loss  incurred by  the Fund  by reason  of such  cancellation, and  if such
purchaser is a shareholder, the  Fund shall have the  authority as agent of  the
shareholder  to redeem shares  in his or  her account at  their then-current net
asset value per  share to reimburse  the Fund for  the loss incurred.  Investors
whose  purchase orders have  been cancelled due to  nonpayment may be prohibited
from placing future orders.
 
The Fund  reserves the  right  at any  time to  waive  or increase  the  minimum
requirements applicable to initial or subsequent investments with respect to any
person  or class of persons.  An order to purchase shares  is not binding on the
Fund until it  has been confirmed  in writing  by the Transfer  Agent (or  other
arrangements  made with the Fund, in the  case of orders utilizing wire transfer
of funds, as described above) and payment has been received. To protect existing
shareholders, the Fund reserves the right to reject any offer for a purchase  of
shares by any individual.
 
SALES OUTSIDE THE UNITED STATES
Sales  of Fund shares made through brokers  outside the United States will be at
net asset value plus a sales commission,  if any, established by that broker  or
by local law.
 
EXCHANGES BETWEEN FUNDS
Shares  of the Fund may be exchanged for shares of other GT Global Mutual Funds,
based on  their respective  net asset  values without  imposition of  any  sales
charges  provided that the registration  remains identical. Advisor Class shares
may be exchanged only for Advisor Class shares of other GT Global Mutual  Funds.
The  exchange privilege  is not  an option  or right  to purchase  shares but is
permitted under the current policies of  the respective GT Global Mutual  Funds.
The  privilege may be  discontinued or changed at  any time by  any of the funds
upon 60 days prior notice to the shareholders of such fund and is available only
in states  where the  exchange may  be legally  made. Before  purchasing  shares
through  the exercise of the exchange privilege, a shareholder should obtain and
read a copy of the  prospectus of the fund to  be purchased and should  consider
the investment objective(s) of the fund.
 
TELEPHONE REDEMPTIONS
A  corporation or partnership  wishing to utilize  telephone redemption services
must submit a "Corporate Resolution" or "Certificate of Partnership"  indicating
the names, titles and the required number of signatures of persons authorized to
act  on  its  behalf.  The  certificate must  be  signed  by  a  duly authorized
officer(s) and,  in  the case  of  a corporation,  the  corporate seal  must  be
affixed. All shareholders may request that redemption proceeds be transmitted by
bank  wire upon request directly to the shareholder's predesignated account at a
domestic bank or savings institution, if the proceeds are at least $1,000. Costs
in connection with the administration  of this service, including wire  charges,
currently  are borne by the Fund. Proceeds of less than $1,000 will be mailed to
the shareholder's registered address of record. The Fund and the Transfer  Agent
reserve  the right to refuse any  telephone instructions and may discontinue the
aforementioned redemption options upon 30 days' written notice.
 
                  Statement of Additional Information Page 29
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
 
SUSPENSION OF REDEMPTION PRIVILEGES
The Fund may suspend redemption privileges  or postpone the date of payment  for
more  than seven days after a redemption order is received during any period (1)
when the NYSE is  closed other than customary  weekend and holiday closings,  or
trading  on  the  NYSE is  restricted  as determined  by  the SEC,  (2)  when an
emergency exists, as  defined by  the SEC, which  would prohibit  the Fund  from
disposing  of its portfolio securities or in fairly determining the value of its
assets, or (3) as the SEC may otherwise permit.
 
REDEMPTIONS IN KIND
It is possible  that conditions  may arise  in the  future which  would, in  the
opinion of the Company's Board of Directors, make it undesirable for the Fund to
pay  for all redemptions in cash. In such cases, the Board may authorize payment
to be made  in portfolio securities  or other  property of the  Fund, so  called
"redemptions  in kind." Payment of  redemptions in kind will  be made in readily
marketable securities.  Such  securities  would  be valued  at  the  same  value
assigned  to  them in  computing  the net  asset  value per  share. Shareholders
receiving such  securities  would incur  brokerage  costs in  selling  any  such
securities  so received. However,  despite the foregoing,  the Company has filed
with the SEC an election pursuant to  Rule 18f-1 under the 1940 Act. This  means
that  the  Fund  will  pay in  cash  all  requests for  redemption  made  by any
shareholder of record, limited in amount with respect to each shareholder during
any ninety-day period to the  lesser of $250,000 or 1%  of the value of the  net
assets of the Fund at the beginning of such period. This election is irrevocable
so  long  as  Rule  18f-1  remains  in effect,  unless  the  SEC  by  order upon
application permits the withdrawal of such election.
 
- --------------------------------------------------------------------------------
 
                                     TAXES
 
- --------------------------------------------------------------------------------
 
GENERAL
In order to continue to qualify for treatment as a regulated investment  company
("RIC")  under the Internal Revenue Code of  1986, as amended ("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, net short-term capital gain and net gains from certain foreign  currency
transactions)  ("Distribution  Requirement")  and must  meet  several additional
requirements. These requirements include  that the Fund 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 foreign currencies, or other income (including gains from options,
Futures  or Forward Contracts) derived with respect to its business of investing
in securities or those currencies ("Income Requirement").
 
Dividends and  other distributions  declared  by the  Fund  in, 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.
 
A  portion of  the dividends from  the Fund's investment  company taxable income
(whether paid in cash  or reinvested in additional  shares) may be eligible  for
the  dividends-received deduction allowed to  corporations. The eligible portion
may  not  exceed  the  aggregate  dividends  received  by  the  Fund  from  U.S.
corporations.  However,  dividends  received  by  a  corporate  shareholder  and
deducted  by  it  pursuant  to  the  dividends-received  deduction  are  subject
indirectly to the alternative minimum tax.
 
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.
 
The  Fund will be subject to a nondeductible 4% excise tax ("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.
 
FOREIGN TAXES
Dividends  and  interest  received  by  the  Fund  may  be  subject  to  income,
withholding  or other  taxes imposed by  foreign countries  and U.S. possessions
("foreign taxes") that would reduce the yield on its securities. Tax conventions
between certain countries and the United States may reduce or eliminate  foreign
taxes, however, and many foreign countries do
 
                  Statement of Additional Information Page 30
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
not  impose  taxes  on  capital  gains  in  respect  of  investments  by foreign
investors. If more than 50% of the value of the Fund's total assets at the close
of its taxable  year consists of  securities of foreign  corporations, the  Fund
will be eligible to, and may, file an election with the Internal Revenue Service
that  will enable  its shareholders,  in effect, to  receive the  benefit of the
foreign tax credit with respect to any foreign taxes paid by it. Pursuant to the
election, the Fund would treat those taxes as dividends paid to its shareholders
and each shareholder would be required to (1) include in gross income, and treat
as paid by him, his share of those taxes, (2) treat his share of those taxes and
of any dividend paid by  the Fund that represents  income from foreign and  U.S.
possessions  sources as his own income from those sources, and (3) either deduct
the taxes deemed paid by him in computing his taxable income or,  alternatively,
use  the foregoing information in calculating the foreign tax credit against his
federal income tax. The Fund will report to its shareholders shortly after  each
taxable  year their respective shares of  the Fund's income from sources within,
and taxes  paid to,  foreign countries  and U.S.  possessions if  it makes  this
election.
 
PASSIVE FOREIGN INVESTMENT COMPANIES
The  Fund  may invest  in the  stock of  "passive foreign  investment companies"
("PFICs"). A PFIC is a foreign  corporation -- other than a "controlled  foreign
corporation"  (I.E.,  a foreign  corporation  in which,  on  any day  during its
taxable year,  more than  50% of  the total  voting power  of all  voting  stock
therein  or the total value of all stock therein is owned, directly, indirectly,
or constructively, by  "U.S. shareholders," defined  in the singular  as a  U.S.
person  that owns, directly, indirectly, or constructively, at least 10% of that
voting power)  as to  which the  Fund  is a  U.S. shareholder  (effective  after
October  31, 1998) -- that, in general, meets either of the following tests: (1)
at least 75% of its gross income is passive or (2) an average of at least 50% of
its assets produce,  or are held  for the production  of, passive income.  Under
certain  circumstances, the  Fund will  be subject  to federal  income tax  on a
portion of  any "excess  distribution" received  on, or  of any  gains from  the
disposition  of, stock  of a  PFIC (collectively  "PFIC income"),  plus interest
thereon, even if the Fund distributed the  PFIC income as a taxable dividend  to
its  shareholders. The balance of the PFIC income will be included in the Fund's
investment company taxable income and, accordingly, will not be taxable to it to
the extent that income is distributed to its shareholders.
 
If the Fund  invests in  a PFIC and  elects to  treat the PFIC  as a  "qualified
electing  fund"  ("QEF"),  then  in  lieu  of  the  foregoing  tax  and interest
obligation, the Fund would  be required to include  in income each taxable  year
its  pro rata  share of the  QEF's ordinary  earnings and net  capital gain (the
excess of net long-term capital gain over net short-term capital loss) --  which
most likely would have to be distributed by the Fund to satisfy the Distribution
Requirement and avoid imposition of the Excise Tax -- even if those earnings and
gain  were not received by the  Fund from the QEF. In  most instances it will be
very difficult, if  not impossible,  to make  this election  because of  certain
requirements thereof.
 
Effective for its taxable year beginning November 1, 1998, the Fund may elect to
"mark  to market" its  stock in any PFIC.  "Marking-to-market," in this context,
means including in ordinary income each taxable year the excess, if any, of  the
fair  market value of the PFIC's stock over the Fund's adjusted basis therein as
of the  end of  that year.  Pursuant to  the election,  the Fund  also would  be
allowed to deduct (as an ordinary, not capital, loss) the excess, if any, of its
adjusted  basis  in PFIC  stock over  the fair  market value  thereof as  of the
taxable year-end, but only  to the extent of  any net mark-to-market gains  with
respect  to that stock included by the  Fund for prior taxable years. The Fund's
adjusted basis is each PFIC's stock with respect to which is makes this election
would be adjusted to reflect the amounts of income included and deductions taken
under the election. Regulations proposed in1992 would provide a similar election
with respect to the stock of certain PFICs.
 
NON-U.S. SHAREHOLDERS
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")  will  be
subject  to  U.S. withholding  tax  (at a  rate of  30%  or lower  treaty rate).
Withholding will  not  apply  if a  dividend  paid  by the  Fund  to  a  foreign
shareholder  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. Distributions  of net capital gain are not
subject to  withholding, but  in the  case of  a foreign  shareholder who  is  a
nonresident  alien individual, those distributions ordinarily will be subject to
U.S. income tax at  a rate of 30%  (or lower treaty rate)  if the individual  is
physically  present  in the  United States  for  more than  182 days  during the
taxable year and the distributions are attributable to a fixed place of business
maintained by the individual in the United States.
 
OPTIONS, FUTURES AND FOREIGN CURRENCY TRANSACTIONS
The use  of  hedging transactions,  such  as selling  (writing)  and  purchasing
options  and  Futures Contracts  and entering  into Forward  Contracts, involves
complex rules  that  will  determine,  for  federal  income  tax  purposes,  the
character and timing of recognition of the gains and losses the Fund realizes in
connection  therewith. Gains from the  disposition of foreign currencies (except
certain gains  that may  be  excluded by  future  regulations), and  gains  from
options,  Futures and Forward Contracts derived by  the Fund with respect to its
business of  investing in  securities  or foreign  currencies, will  qualify  as
permissible income under the Income Requirement.
 
                  Statement of Additional Information Page 31
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
 
Futures  and Forward  Contracts that  are subject  to section  1256 of  the Code
(other  than  those  that  are  part  of  a  "mixed  straddle")  ("Section  1256
Contracts")  and  that are  held by  the Fund  at  the end  of its  taxable year
generally will be deemed to  have been sold at  market value for federal  income
tax  purposes. Sixty percent of any net  gain or loss recognized on these deemed
sales, and 60% of any net gain or loss realized from any actual sales of Section
1256 Contracts,  will be  treated as  long-term capital  gain or  loss, and  the
balance  will be treated as short-term capital  gain or loss. Section 988 of the
Code also may apply to gains and losses from transactions in foreign currencies,
foreign-currency-denominated debt securities  and options,  Futures and  Forward
Contracts  on foreign currencies ("Section 988"  gains and losses). Each Section
988 gain or loss generally is computed separately and treated as ordinary income
or loss.  In  the  case  of  overlap between  sections  1256  and  988,  special
provisions  determine the character and timing of  any income, gain or loss. The
Fund attempts to monitor  section 988 transactions to  minimize any adverse  tax
impact.
 
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.
 
- --------------------------------------------------------------------------------
 
                             ADDITIONAL INFORMATION
 
- --------------------------------------------------------------------------------
 
LIECHTENSTEIN GLOBAL TRUST
Liechtenstein Global Trust AG, formerly BIL GT Group, is composed of the Manager
and its worldwide affiliates. Other worldwide affiliates of Liechtenstein Global
Trust include  LGT Bank  in Liechtenstein,  formerly Bank  in Liechtenstein,  an
international  financial  services  institution  founded in  1920.  LGT  Bank in
Liechtenstein has principal  offices in Vaduz,  Liechtenstein. Its  subsidiaries
currently include LGT Bank in Liechtenstein (Deutschland) GmbH, formerly Bank in
Liechtenstein  (Frankfurt) GmbH, and LGT Asset Management AG, formerly Bilfinanz
und Verwaltung AG, in Zurich, Switzerland.
 
Worldwide  asset  management  affiliates   also  currently  include  LGT   Asset
Management  PLC, formerly  G.T. Management  PLC, in  London, England;  LGT Asset
Management Ltd., formerly G.T. Management (Asia)  Ltd., in Hong Kong; LGT  Asset
Management   Ltd.,  formerly  G.T.  Management  (Japan),  in  Tokyo;  LGT  Asset
Management  Pte.  Ltd.,  formerly  G.T.  Management  (Singapore)  PTE  Ltd.,  in
Singapore; LGT Asset Management Ltd., formerly G.T. Management (Australia) Ltd.,
in Sydney; and LGT Asset Management GmbH, formerly BIL Asset Management GmbH, in
Frankfurt, Germany.
 
CUSTODIAN
State  Street  Bank and  Trust Company  ("State  Street"), 225  Franklin Street,
Boston, Massachusetts  02110, acts  as  custodian of  the Fund's  assets.  State
Street  is  authorized to  establish and  has  established separate  accounts in
foreign currencies and to cause  securities of the Fund  to be held in  separate
accounts outside the United States in the custody of non-U.S. banks.
 
INDEPENDENT ACCOUNTANTS
The Fund's independent accountants are Coopers & Lybrand L.L.P., One Post Office
Square,  Boston,  Massachusetts 02109.  Coopers  & Lybrand  L.L.P.,  conducts an
annual audit of the Fund, assists in  the preparation of the Fund's federal  and
state  income  tax returns  and consults  with the  Company and  the Fund  as to
matters  of  accounting,  regulatory  filings,  and  federal  and  state  income
taxation.
 
The  audited financial statements  of the Company included  in this Statement of
Additional Information have been examined by Coopers & Lybrand L.L.P., 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.
 
USE OF NAME
The Manager has granted the  Company the right to use  the "GT" and "GT  Global"
names  and has  reserved the right  to withdraw its  consent to the  use of such
names by the Company and/or the  Fund at any time, or  to grant the use of  such
names to any other company.
 
                  Statement of Additional Information Page 32
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
 
                               INVESTMENT RESULTS
 
- --------------------------------------------------------------------------------
 
STANDARDIZED RETURNS
The  Fund's "Standardized Returns," as referred to in the Prospectus (see "Other
Information --  Performance  Information"  in the  Prospectus),  are  calculated
separately  for  Class A,  Class  B and  Advisor Class  shares  of the  Fund, as
follows: Standardized Return (average annual total return ("T")) is computed  by
using the ending redeeming value ("ERV") of a hypothetical initial investment of
$1,000  ("P") over a period of years ("n") according to the following formula as
required by the SEC: P(1+T) to the (n)th power = ERV. The following  assumptions
will  be reflected in computations made in accordance with this formula: (1) for
Class A shares, deduction of the maximum  sales charge of 4.75% from the  $1,000
initial  investment;  (2)  for  Class  B  shares,  deduction  of  the applicable
contingent deferred sales charge imposed on a redemption of Class B shares  held
for the period; (3) for Advisor Class shares, deduction of a sales charge is not
applicable;  (4) reinvestment of dividends and  other distributions at net asset
value on the reinvestment date determined  by the Company's Board of  Directors;
and (5) a complete redemption at the end of any period illustrated.
 
The  Standardized Returns for the  Class A, Class B  and Advisor Class shares of
the Fund, stated  as average annualized  total returns, for  the periods  shown,
were:
 
{TABLE TO COME}
 
NON-STANDARDIZED RETURNS
In   addition  to   Standardized  Returns,   the  Fund   may  also   include  in
advertisements, sales  literature and  shareholder  reports other  total  return
performance   data  ("Non-Standardized  Return").   Non-Standardized  Return  is
calculated separately for Class A, Class B and Advisor Class shares of the  Fund
and  may be calculated according to several different formulas. Non-Standardized
Returns may  be  quoted  for  the  same or  different  time  periods  for  which
Standardized  Returns are quoted.  Non-Standardized Returns may  or may not take
sales charges  into  account; performance  data  calculated without  taking  the
effect  of sales  charges into  account will be  higher than  data including the
effect of such charges. Advisor Class shares are not subject to sales charges.
 
Aggregate Non-Standardized Return ("T") is computed by using the ending value of
the account  ("VOA")  of  a  hypothetical initial  investment  of  $1,000  ("P")
according  to  the  following formula:  T=(VOA/P)-1.  Aggregate Non-Standardized
Return assumes reinvestment of dividends and other distributions.
 
The aggregate Non-Standardized Returns (not  taking sales charges into  account)
for  the  Class A,  Class B  and Advisor  Class  shares of  the Fund,  stated as
aggregate total returns for the periods shown, were:
 
{TABLE TO COME}
 
IMPORTANT POINTS TO NOTE ABOUT DATA RELATING TO WORLD EQUITY AND BOND MARKETS
Information  relating  to   foreign  market   performance,  capitalization   and
diversification  is based on sources  believed to be reliable,  but which may be
subject to revision and which has not been independently verified by the Company
or the  Manager. The  authors and  publishers of  such material  are not  to  be
considered  as "experts"  under the  Securities Act  of 1933  on account  of the
inclusion of such information  herein. Stocks chosen  by Morgan Stanley  Capital
International  or  the IFC  for inclusion  in  its various  international market
indices may  not necessarily  constitute a  representative cross-sample  of  the
particular markets.
 
GT  Global believes that this information may be useful to investors considering
whether and to what extent to  diversify their investments through the  purchase
of mutual funds investing in securities on a global basis. However, this data is
not a representation of the past performance of the Fund, nor is it a prediction
of such performance. The performance of the Fund will differ from the historical
performance  of such indices. The performance  of indices does not take expenses
into account, while the Fund incurs expenses in its operations which will reduce
performance. The  Fund is  actively managed,  I.E. The  Manager, as  the  Fund's
investment  manager,  actively purchases  and  sells securities  in  seeking the
Fund's investment objective.  Moreover, the  Fund may  invest a  portion of  its
assets  in  corporate bonds,  while the  above data  relates only  to government
bonds. Each of these factors  will cause the performance  of the Fund to  differ
from indices.
 
                  Statement of Additional Information Page 33
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
 
In  addition,  GT Global  may in  its radio,  television and  other advertising,
employ the use of sound effects such as, for example, sounds of electronic  data
being communicated.
 
The  Fund and GT  Global may from  time to time  compare the Fund  with, but not
limited to, the following:
 
        (1) Various Salomon Brothers World Bond Indices, which measure the total
    return performance of high quality non-U.S. dollar denominated securities in
    major sectors of the worldwide bond markets.
 
        (2) The  Lehman Brothers  Government/Corporate Bond  Index, which  is  a
    comprehensive  measure  of  all  public  obligations  of  the  U.S. Treasury
    (excluding flower bonds  and foreign targeted  issues), all publicly  issued
    debt   of  agencies  of  the   U.S.  government  (excluding  mortgage-backed
    securities), and all  public, fixed rate,  non-convertible investment  grade
    domestic  corporate debt rated at least Baa by  Moody's or BBB by S&P or, in
    the case of nonrated bonds, BBB  by Fitch Investors Service, Inc.  ("Fitch")
    (excluding Collateralized Mortgage Obligations).
 
        (3)  Average of  Savings Accounts,  which is a  measure of  all kinds of
    savings deposits, including longer-term certificates. Savings accounts offer
    a guaranteed rate  of return on  principal, but no  opportunity for  capital
    growth.  During a  portion of  the period,  the maximum  rates paid  on some
    savings deposits were fixed by law.
 
        (4) The Consumer Price Index, which  is a measure of the average  change
    in  prices over time in  a fixed market basket  of goods and services (e.g.,
    food, clothing, shelter, fuels,  transportation fares, charges for  doctors'
    and dentists' services, prescription medicines, and other goods and services
    that people buy for day-to-day living).
 
        (5)  Data and mutual fund rankings and comparisons published or prepared
    by  Lipper  Analytical  Data  Services,  Inc.  ("Lipper"),  CDA/Wiesenberger
    Investment Company Services ("CDA/Wiesenberger") and/or other companies that
    rank  or compare mutual funds by overall performance, investment objectives,
    assets, expense levels, periods of  existence and/or other factors. In  this
    regard,  the Fund may be  compared to the Fund's  "peer group" as defined by
    Lipper, CDA/Wiesenberger and/or other firms,  as applicable, or to  specific
    funds or groups of funds within or without such peer group. Morningstar is a
    mutual  fund rating  service that  also rates mutual  funds on  the basis of
    risk-adjusted performance. Morningstar ratings are calculated from a  fund's
    three,  five  and  ten  year average  annual  returns  with  appropriate fee
    adjustments and a risk factor that reflects fund performance relative to the
    three-month U.S. Treasury bill monthly returns. Ten percent of the funds  in
    an  investment category receive five stars and 22.5% receive four stars. The
    ratings are subject to change each month.
 
        (6) Bear  Stearns  Foreign Bond  Index,  which provides  simple  average
    returns for individual countries and Gross National Product ("GNP")-weighted
    index,  beginning in 1975. The  returns are broken down  by local market and
    currency.
 
        (7) Ibbottson  Associates International  Bond  Index, which  provides  a
    detailed breakdown of local market and currency returns since 1960.
 
        (8)  Standard & Poor's 500 Composite Stock Price Index which is a widely
    recognized index  composed of  the  capitalization-weighted average  of  the
    price of 500 of the largest publicly traded stocks in the U.S.
 
        (9) Salomon Brothers Broad Investment Grade Index which is a widely used
    index  composed of  U.S. domestic government,  corporate and mortgage-backed
    fixed income securities.
 
       (10) Dow Jones Industrial Average.
 
       (11) CNBC/Financial News Composite Index.
 
       (12) Morgan Stanley Capital International World Indices, including, among
    others, the Morgan Stanley Capital International Europe, Australia, Far East
    Index ("EAFE Index").  The EAFE  index is an  unmanaged index  of more  than
    1,000 companies in Europe, Australia and the Far East.
 
       (13)  Salomon Brothers World  Government Bond Index  and Salomon Brothers
    World Government Bond Index-Non-U.S. are  each a widely used index  composed
    of world government bonds.
 
       (14)  The World Bank Publication of Trends in Developing Countries (TIDE)
    provides brief reports on  most of the World  Bank's borrowing members.  The
    World  Development  Report is  published annually  and  looks at  global and
    regional  economic  trends  and   their  implications  for  the   developing
    economies.
 
       (15)  Salomon  Brothers Global  Telecommunications  Index is  composed of
    telecommunications companies in the developing and emerging countries.
 
                  Statement of Additional Information Page 34
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
 
       (16) Datastream  and Worldscope  each is  an on-line  database  retrieval
    service for information including but not limited to international financial
    and economic data.
 
       (17)  International  Financial  Statistics,  which  is  produced  by  the
    International Monetary Fund.
 
       (18) Various publications and reports produced by the World Bank and  its
    affiliates.
 
       (19)  Various publications from the International Bank for Reconstruction
    and Development/The World Bank.
 
       (20) Various publications including but  not limited to ratings  agencies
    such as Moody's, S&P and Fitch.
 
       (21)  Wilshire Associates which is  an on-line database for international
    financial and economic data including  performance measure for a wide  range
    of securities.
 
       (22)  Bank Rate National Monitor Index, which is an average of the quoted
    rates for 100 leading banks and thrifts in ten U.S. cities.
 
       (23) International Finance Corporation ("IFC") Emerging Markets Data Base
    which provides detailed statistics on  stock and bond markets in  developing
    countries.
 
       (24)  Various publications from the Organization for Economic Cooperation
    and Development (OECD).
 
Indices, economic and  financial data  prepared by the  research departments  of
various  financial organizations such as  Salomon Brothers Inc, Lehman Brothers,
Merrill Lynch, Pierce, Fenner & Smith, Inc. J. P. Morgan, Morgan Stanley,  Smith
Barney,  S.G. Warburg, Jardine Flemming, The Bank for International Settlements,
Asian Development Bank, Bloomberg, L.P. and Ibbottson Associates may be used  as
well  as information reported by the  Federal Reserve and the respective Central
Banks of  various  nations.  In  addition,  performance  rankings,  ratings  and
commentary  reported periodically  in national  financial publications, included
but not limited to,  Money Magazine, Mutual Fund  Magazine, Smart Money,  Global
Finance,  EuroMoney,  Financial  World, Forbes,  Fortune,  Business  Week, Latin
Finance, the Wall Street Journal, Emerging Markets Weekly, Kiplinger's Guide  To
Personal  Finance, Barron's, The Financial Times, USA Today, The New York Times,
Far Eastern Economic Review,  The Economist and  Investors Business Digest.  The
Fund  may compare its  performance to that  of other compilations  or indices of
comparable quality  to  those  listed  above and  other  indices  which  may  be
developed and made available.
 
From  time  to  time,  the  Fund  and GT  Global  may  refer  to  the  number of
shareholders in  the Fund  or the  aggregate number  of shareholders  in all  GT
Global  Mutual Funds  or the  dollar amount of  Fund assets  under management or
rankings by DALBAR Surveys, Inc. in advertising materials.
 
GT  Global  believes  the  Fund  is  an  appropriate  investment  for  long-term
investment  goals including, but  not limited to  funding retirement, paying for
education or  purchasing  a  house.  The Fund  does  not  represent  a  complete
investment program and the investors should consider the Fund as appropriate for
a  portion of their overall investment  portfolio with regard to their long-term
investment goals.
 
GT Global believes that  a growing number of  consumer products, including,  but
not limited to home appliances, automobiles and clothing, purchased by Americans
are  manufactured  abroad. GT  Global believes  that  investing globally  in the
companies that produce products for U.S. consumers can help U.S. investors  seek
protection of the value of their assets against the potentially increasing costs
of  foreign manufactured goods. Of course, there  can be no assurance that there
will be any correlation between global  investing and the costs of such  foreign
goods  unless there  is a corresponding  change in  value of the  U.S. dollar to
foreign currencies. From time to time, GT  Global may refer to or advertise  the
names  of such companies although  there can be no  assurance that any GT Global
Mutual Fund may own the securities of these companies.
 
The Fund may compare its performance to that of other compilations or indices of
comparable quality  to  those listed  above  which  may be  developed  and  made
available in the future. The Fund may be compared in advertising to Certificates
of Deposit (CDs), the Bank Rate Monitor National Index, an average of the quoted
rates  for 100 leading banks and thrifts  in ten U.S. cities chosen to represent
the ten largest  Consumer Metropolitan statistical  areas, or other  investments
issued by banks. The Fund differs from bank investments in several respects. The
Fund  may  offer greater  liquidity or  higher potential  returns than  CDs; but
unlike CDs, the Fund will have a  fluctuating share price and return and is  not
FDIC insured.
 
The  Fund's performance may be compared to the performance of other mutual funds
in general, or  to the performance  of particular types  of mutual funds.  These
comparisons  may  be  expressed  as  mutual  fund  rankings  prepared  by Lipper
Analytical Services, Inc.  (Lipper), an independent  service which monitors  the
performance of mutual funds. Lipper
 
                  Statement of Additional Information Page 35
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
generally  ranks funds  on the basis  of total return,  assuming reinvestment of
distributions,  but  does  not  take  sales  charges  or  redemption  fees  into
consideration,  and is prepared without regard  to tax consequences. In addition
to the mutual fund  rankings, the Fund's performance  may be compared to  mutual
fund performance indices prepared by Lipper.
 
GT  Global may provide information designed to help individuals understand their
investment goals  and  explore various  financial  strategies. For  example,  GT
Global  may describe general principles of  investing, such as asset allocation,
diversification and risk tolerance.
 
Ibbotson Associates of Chicago, Illinois (Ibbotson) provides historical  returns
of  the capital  markets in  the United  States, including  common stocks, small
capitalization stocks, long-term  corporate bonds, intermediate-term  government
bonds,  long-term government bonds,  Treasury bills, the  U.S. rate of inflation
(based on the CPI), and combinations of various capital markets. The performance
of these capital markets is based on the returns of different indices.
 
GT Global Mutual Funds may use the performance of these capital markets in order
to demonstrate  general  risk-versus-reward  investment  scenarios.  Performance
comparisons  may also include the  value of a hypothetical  investment in any of
these capital  markets. The  risks associated  with the  security types  in  any
capital market may or may not correspond directly to those of the Fund. Ibbotson
calculates  total returns  in the  same method  as the  Fund. The  Fund may also
compare performance  to  that of  other  compilations  or indices  that  may  be
developed and made available in the future.
 
In  advertising materials, GT  Global may reference or  discuss its products and
services, which may  include: retirement investing;  the effects of  dollar-cost
averaging  and saving for  college or a  home. In addition,  GT Global may quote
financial or business publications  and periodicals, including model  portfolios
or  allocations, as they  relate to fund  management, investment philosophy, and
investment techniques.
 
The Fund may discuss its Quotron number, CUSIP number, and its current portfolio
management team.
 
From time to time, the Fund's performance  also may be compared to other  mutual
funds  tracked  by  financial  or  business  publications  and  periodicals. For
example, the  Fund may  quote Morningstar,  Inc. in  its advertising  materials.
Morningstar, Inc. is a mutual fund rating service that rates mutual funds on the
basis of risk-adjusted performance. In addition, the Fund may quote financial or
business  publications  and  periodicals  as  they  relate  to  fund management,
investment philosophy,  and investment  techniques.  Rankings that  compare  the
performance  of GT Global Mutual Funds  to one another in appropriate categories
over specific periods of time may also be quoted in advertising.
 
The Fund may  quote various  measures of volatility  and benchmark  correlation,
such  as beta, standard deviation and R(2) in advertising. In addition, the Fund
may compare these measures to those of other funds. Measures of volatility  seek
to  compare  the Fund's  historical share  price  fluctuations or  total returns
compared to those of a benchmark. All measures of volatility and correlation are
calculated using averages of historical data.
 
The Fund may  advertise examples of  the effects of  periodic investment  plans,
including the principle of dollar cost averaging. In such a program, an investor
invests  a  fixed  dollar  amount  in  a  fund  at  periodic  intervals, thereby
purchasing fewer shares  when prices are  high and more  shares when prices  are
low.  While such a strategy does not assure  a profit or guard against loss in a
declining market, the  investor's average cost  per share can  be lower than  if
fixed  numbers of shares are purchased at the same intervals. In evaluating such
a plan, investors should  consider their ability  to continue purchasing  shares
through periods of low price levels.
 
The  Fund  may  be available  for  purchase  through retirement  plans  or other
programs offering deferral of or exemption from income taxes, which may  produce
superior  after-tax returns over time. For example, a $10,000 investment earning
a taxable return of 10% annually would have an after-tax value of $17,976  after
ten  years, assuming tax was deducted from the return each year at a 39.6% rate.
An equivalent tax-deferred investment would  have an after-tax value of  $19,626
after  ten years, assuming  tax was deducted  at a 39.6%  rate from the deferred
earnings at the end of the ten-year period.
 
The Fund may describe in its  sales material and advertisements how an  investor
may  invest in the GT  Global Funds through various  retirement plans that offer
deferral of income taxes on investment earnings and may also enable an  investor
to  make pre-tax  contributions. Because  of their  advantages, these retirement
plans may produce returns superior to comparable non-retirement investments.  In
sales  material and advertisements, the Fund may also discuss these accounts and
plans, which include:
 
INDIVIDUAL RETIREMENT ACCOUNTS (IRAs): If you have earned income from employment
(including self-employment), you can  contribute each year to  an IRA up to  the
lessor  of (1) $2,000 for yourself or $4,000 for you and your spouse, regardless
of  whether  your  spouse  is  employed,  or  (2)  100%  of  compensation.  Some
individuals may be able to take an income tax
 
                  Statement of Additional Information Page 36
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
deduction  for the contribution.  Regular contributions may not  be made for the
year you become 70 1/2, or thereafter. Please consult your tax advisor for  more
information.
 
ROLLOVER  IRAs: Individuals who receive  distributions from qualified retirement
plans (other than  required distributions) and  who wish to  keep their  savings
growing  tax-deferred  can  rollover  (or  make  a  direct  transfer  of)  their
distribution to a  Rollover IRA. These  accounts can also  receive rollovers  or
transfers  from an existing  IRA. If an "eligible  rollover distribution" from a
qualified employer-sponsored retirement plan is  not directly rolled over to  an
IRA  (or  certain qualified  plans),  withholding at  the  rate of  20%  will be
required for federal income tax purposes.  A distribution from a qualified  plan
that  is not an "eligible rollover  distribution," including a distribution that
is one  of a  series  of substantially  equal  periodic payments,  generally  is
subject to regular wage withholding or withholding at the rate of 10% (depending
on  the type and amount  of the distribution), unless you  elect not to have any
withholding apply. Please consult your tax advisor for more information.
 
SEP-IRAs: Simplified  employee  pension  plans  ("SEP"  or  "SEP-IRAs")  provide
self-employed  individuals (and any eligible employees) with benefits similar to
Keogh-type plans or 401(k) plans, but with fewer administrative requirements and
therefore potential lower annual administration expenses.
 
CODE SECTION 403(b)(7) CUSTODIAL ACCOUNTS: Employees of public schools and  most
other   not-for-profit   corporations   can   make   pre-tax   salary  reduction
contributions to these accounts.
 
PROFIT-SHARING  (INCLUDING   SECTION   401(k))  AND   MONEY   PURCHASE   PENSION
PLANS:  Corporations can sponsor these  qualified defined contribution plans for
their  employees.  A  Section  401(k)  plan,  a  type  of  profit-sharing  plan,
additionally permit the eligible, participating employees to make pre-tax salary
reduction contributions to the plan (up to certain limitations).
 
SIMPLE  RETIREMENT PLANS: Employers with  no more than 100  employees who do not
maintain another retirement plan  may establish a  Savings Incentive Match  Plan
for  Employees ("SIMPLE") either as  separate IRAs or as  part of a Code Section
401(k) plan. SIMPLEs are not subject to the complicated nondiscrimination  rules
that generally apply to qualified retirements plans.
 
GT Global may from time to time in its sales methods and advertising discuss the
risks inherent in investing. The major types of investment risk are market risk,
industry  risk,  credit  risk,  interest  rate  risk  and  inflation  risk. Risk
represents the possibility that you may lose some or all of your investment over
a period  of time.  A basic  tenet of  investing is  the greater  the  potential
reward, the greater the risk.
 
From  time to time, the Fund and GT Global will quote information including, but
not limited  to,  data regarding:  individual  countries, regions,  world  stock
exchanges,  and economic and demographic statistics from sources GT Global deems
reliable,  including,  the  economic  and  financial  data  of  such   financial
organizations as:
 
 1) Stock  market  capitalization:  Morgan Stanley  Capital  International World
    Indices, IFC and Datastream.
 
 2) Stock market trading volume:  Morgan Stanley Capital International  Industry
    Indices and IFC.
 
 3) The  number of  listed companies: IFC,  G.T. Guide to  World Equity Markets,
    Salomon Brothers, Inc. and S.G. Warburg.
 
 4) Wage rates: U.S. Department of  Labor Statistics and Morgan Stanley  Capital
    International World Indices.
 
 5) International  industry  performance: Morgan  Stanley  Capital International
    World Indices, Wilshire Associates and Salomon Brothers, Inc.
 
 6) Stock  market  performance:  Morgan  Stanley  Capital  International   World
    Indices, IFC and Datastream.
 
 7) The  Consumer Price Index and inflation rate: The World Bank, Datastream and
    IFC.
 
 8) Gross Domestic Product (GDP): Datastream and The World Bank.
 
 9) GDP growth rate: IFC, The World Bank and Datastream.
 
10) Population: The World Bank, Datastream and United Nations.
 
11) Average annual growth rate (%) of population: The World Bank, Datastream and
    United Nations.
 
12) Age distribution within populations:  Organization for Economic  Cooperation
    and Development and United Nations.
 
13) Total exports and imports by year: IFC, The World Bank and Datastream.
 
                  Statement of Additional Information Page 37
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
 
14) Top three companies by country, industry or market: IFC, G.T. Guide to World
    Equity Markets, Salomon Brothers Inc. and S.G. Warburg.
 
15) Foreign  direct  investments to  developing  countries: The  World  Bank and
    Datastream.
 
16) Standard deviation and performance returns for U.S. and non-U.S. equity  and
    bond markets: Morgan Stanley Capital International.
 
17) Countries  restructuring their debt,  including those under  the Brady Plan:
    the Manager.
 
18) Political and economic structure of countries: Economist Intelligence Unit.
 
19) Government and  corporate bonds  -- credit  ratings, yield  to maturity  and
    performance returns: Salomon Brothers, Inc.
 
20) Dividend yields for U.S. and non-U.S. companies: Bloomberg.
 
21) Supply,  consumption,  demand  and  growth in  demand  of  certain products,
    services and industries, including, but not limited to, electricity,  water,
    transportation, construction materials, natural resources, technology, other
    basic infrastructure, financial services, health care services and supplies,
    consumer products and services and telecommunications equipment and services
    (sources  of such information may include, but  would not be limited to, The
    World Bank, OECD, IMF, Bloomberg and Datastream).
 
In advertising and sales materials, GT  Global may make reference to or  discuss
its products, services and accomplishments. Among these accomplishments are that
in  1983  the Manager  provided assistance  to  the government  of Hong  Kong in
linking its currency to the  U.S. dollar, and that  in 1987 Japan's Ministry  of
Finance  licensed  LGT  Asset  Management  Ltd.  as  one  of  the  first foreign
discretionary investment managers for Japanese investors. Such  accomplishments,
however, should not be viewed as an endorsement of the Manager by the government
of  Hong Kong, Japan's Ministry of Finance or any other government or government
agency. Nor do  any such accomplishments  of the Manager  provide any  assurance
that the GT Global Mutual Funds' investment objectives will be achieved.
 
GT GLOBAL ADVANTAGE
As  part of Liechtenstein Global Trust,  GT Global continues a 75-year tradition
of  service  to  individuals  and  institutions.  Today  we  bring  investors  a
combination of experience, worldwide resources, a global perspective, investment
talent and a time tested investment discipline. With investment professionals in
nine  offices  worldwide,  we  witness world  events  and  economic developments
firsthand.
 
The key to achieving  consistent results is  following a disciplined  investment
process.  Our  approach  to  asset allocation  takes  advantage  of  GT Global's
worldwide  presence  and  global  perspective.  Our  "macroeconomic"   worldview
determines our overall strategy of regional, country and sector allocations. Our
bottom  up  process of  security  selection combines  fundamental  research with
quantitative analysis through our proprietary models.
 
Built in  checks and  balances strengthen  the process,  enhancing  professional
experience  and judgment with an objective  assessment of risk. Ultimately, each
security we select has  passed a ranking system  that helps our portfolio  teams
determine when to buy and when to sell.
 
- --------------------------------------------------------------------------------
 
                          DESCRIPTION OF DEBT RATINGS
 
- --------------------------------------------------------------------------------
 
DESCRIPTION OF BOND RATINGS
        Moody's  rates the 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  edge." Interest
    payments are  protected  by a  large  or exceptionally  stable  margin,  and
    principal  is secure.  While the various  protective elements  are likely to
    change, such changes as  can be visualized are  most unlikely to impair  the
    fundamentally strong position of such issues.
 
                  Statement of Additional Information Page 38
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
 
        Aa  -- High quality by all standards. They are rated lower than the best
    bond because margins of protection may not be as large as in Aaa securities,
    fluctuation of protective elements may be of greater amplitude or there  may
    be  other elements  present which  make the  long-term risk  appear somewhat
    greater.
 
        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.  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 to
    be well assured. Often the protection of interest and principal payments may
    be very moderate, and thereby not well safeguarded during other 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.
 
        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 "DD" 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 --  High  grade. Very  strong  capacity  to pay  interest  and  repay
    principal.  Generally, these  bonds differ from  AAA issues only  in a small
    degree.
 
        A -- Have a strong capacity to pay interest and repay principal although
    they are  somewhat more  susceptible to  the adverse  effects of  change  in
    circumstances and economic conditions than debt in higher rated categories.
 
        BBB  -- Regarded as  having adequate capacity to  pay interest and repay
    principal. These bonds normally exhibit adequate protection parameters,  but
    adverse  economic conditions  or changing  circumstances are  more likely to
    lead to a  weakened capacity to  pay interest and  repay principal than  for
    debt in higher rated categories.
 
        BB,  B, CCC,  CC, C --  Debt rated "BB,"  "B," "CCC," "CC,"  and "C" are
    regarded, on balance, as predominantly speculative with respect to  capacity
    to  pay interest and  repay principal in  accordance with the  terms of this
    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.
 
                  Statement of Additional Information Page 39
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
 
        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  indefinable vulnerability  to default,  and is
    dependent upon favorable business, financial and economic conditions to meet
    timely payment  of interest  and repayment  of principal.  In the  event  of
    adverse business, financial or economic conditions, it is not likely to have
    the  capacity to pay interest and repay principal. The "CCC" rating category
    is also used for debt subordinated to senior debt that is assigned an actual
    or implied "B" or "B-" rating.
 
        CC -- 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 which 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.
 
        C -- Reserved for income bonds on which no interest is being paid.
 
        D  -- In payment default. The "D"  rating is used when interest payments
    are not made on  the date due  even if the applicable  grace period has  not
    expired,  unless S&P  believes that such  payments will be  made during such
    grace period.  The  "D" rating  also  will be  used  upon the  filing  of  a
    bankruptcy petition if debt service payments are jeopardized.
 
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.
 
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  have  a  superior  capacity  for  repayment  of  short-term  promissory
obligations.  Prime-1  repayment  capacity  normally will  be  evidenced  by the
following  characteristics:   leading  market   positions  in   well-established
industries;  high rates of return on funds employed; conservative capitalization
structures with moderate  reliance on  debt and ample  asset protections;  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. Issues  rated  Prime-2 have  a strong
capacity for repayment of short-term promissory 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,  will  be more  subject to
variation. Capitalization characteristics, while still appropriate, may be  more
affected by external conditions. Ample alternate liquidity is maintained.
 
    S&P ratings of commercial paper are graded into four categories ranging from
"A"  for the  highest quality  obligations to  "D" for  the lowest.  A -- Issues
assigned its highest  rating are regarded  as having the  greatest capacity  for
timely  payment. Issues in this category are delineated with numbers 1, 2, and 3
to indicate the  relative degree of  safety. A-1 --  This designation  indicates
that  the degree  of safety regarding  timely payment is  either overwhelming or
very  strong.   Those  issues   determined   to  possess   overwhelming   safety
characteristics  will  be denoted  with  a plus  (++)  sign designation.  A-2 --
Capacity for timely payments on issues with this designation is strong; however,
the relative degree of safety is not as high as for issues designated "A-1."
 
                  Statement of Additional Information Page 40
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
 
COMMERCIAL PAPER RATINGS
The Fund may invest only in high quality commercial paper, i.e. commercial paper
rated Prime-1 by Moody's, A-1 by S&P,  or, if unrated, judged by the Manager  to
be  of comparable  quality. Issuers  rated Prime-1  by Moody's  have, in Moody's
judgment, a  superior capacity  for repayment  of short-term  debt  obligations.
Prime-1   repayment  capacity  will  normally  be  evidenced  by  the  following
characteristics: leading market positions  in well-established industries;  high
rates  of return on funds  employed; conservative capitalization structures with
moderate reliance on debt and ample asset protections; 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. Issues assigned the A-1  rating by S&P are regarded by  S&P
as  having the greatest capacity for  timely payment. This designation indicates
that the degree  of safety regarding  timely payment is  either overwhelming  or
very strong.
 
- --------------------------------------------------------------------------------
 
                              FINANCIAL STATEMENTS
 
- --------------------------------------------------------------------------------
 
The audited financial statements of the Fund as of October 31, 1996, and for its
fiscal year then-ended appear on the following pages.
 
                  Statement of Additional Information Page 41
<PAGE>
                       GT GLOBAL DEVELOPING MARKETS FUND
 
                             GT GLOBAL MUTUAL FUNDS
 
  GT GLOBAL OFFERS A BROAD RANGE OF MUTUAL FUNDS TO COMPLEMENT MANY INVESTORS'
  PORTFOLIOS.  FOR MORE INFORMATION  AND A PROSPECTUS ON  ANY GT GLOBAL MUTUAL
  FUND, INCLUDING FEES, EXPENSES AND THE  RISKS OF GLOBAL AND EMERGING  MARKET
  INVESTING  AND THE RISKS OF INVESTING  IN RELATED INDUSTRIES, PLEASE CONTACT
  YOUR FINANCIAL ADVISER OR CALL GT GLOBAL DIRECTLY AT 1-800-824-1580.
 
GROWTH FUNDS
 
/ / GLOBALLY DIVERSIFIED FUNDS
 
GT GLOBAL WORLDWIDE GROWTH FUND
Invests around the world, including the U.S.
 
GT GLOBAL INTERNATIONAL GROWTH FUND
Provides portfolio diversity by investing outside the U.S.
 
GT GLOBAL EMERGING MARKETS FUND
Gives access to the growth potential of developing economies
 
GT GLOBAL DEVELOPING MARKETS FUND
Invests in debt and equity securities of developing market issuers
 
/ / GLOBAL THEME FUNDS
 
GT GLOBAL CONSUMER PRODUCTS AND
SERVICES FUND
Invests in companies that manufacture, market, retail, or distribute consumer
products or services
 
GT GLOBAL FINANCIAL SERVICES FUND
Focuses on the worldwide opportunities from the demand for financial services
and products
 
GT GLOBAL HEALTH CARE FUND
Invests in the growing health care industries worldwide
 
GT GLOBAL INFRASTRUCTURE FUND
Seeks companies that build, improve or maintain a country's infrastructure
 
GT GLOBAL NATURAL RESOURCES FUND
Concentrates on companies that own, explore or develop natural resources
 
GT GLOBAL TELECOMMUNICATIONS FUND
Invests in companies worldwide that develop, manufacture or sell
telecommunications services or equipment
 
/ / REGIONALLY DIVERSIFIED FUNDS
 
GT GLOBAL NEW PACIFIC GROWTH FUND
Offers access to the emerging and established markets of the Pacific Rim,
excluding Japan
 
GT GLOBAL EUROPE GROWTH FUND
Focuses on investment opportunities in the
new, unified Europe
 
GT GLOBAL LATIN AMERICA GROWTH FUND
Invests in the emerging markets of Latin America
 
/ / SINGLE COUNTRY FUNDS
 
GT GLOBAL AMERICA SMALL CAP GROWTH FUND
Invests in equity securities of small U.S. companies
 
GT GLOBAL AMERICA MID CAP GROWTH FUND
Concentrates on medium-sized companies in the U.S.
 
GT GLOBAL AMERICA VALUE FUND
Concentrates on equity securities of large cap U.S. companies believed to be
undervalued
 
GT GLOBAL JAPAN GROWTH FUND
Provides U.S. investors with direct access to the Japanese market
 
GROWTH AND INCOME FUNDS
 
GT GLOBAL GROWTH & INCOME FUND
Invests in blue-chip stocks and government bonds from around the world
 
FIXED INCOME FUNDS
 
GT GLOBAL GOVERNMENT INCOME FUND
Earns monthly income from global government securities
 
GT GLOBAL STRATEGIC INCOME FUND
Allocates its assets among debt securities from the U.S., developed foreign
countries and emerging markets
 
GT GLOBAL HIGH INCOME FUND
Invests in debt securities in emerging markets
 
MONEY MARKET FUND
 
GT GLOBAL DOLLAR FUND
Invests in high quality, U.S. dollar-denominated money market securities
worldwide for stability and preservation of capital
 
[LOGO]
 
  NO DEALER, SALES REPRESENTATIVE OR OTHER PERSON HAS BEEN AUTHORIZED TO  GIVE
  ANY  INFORMATION  OR  TO  MAKE  ANY  REPRESENTATION  NOT  CONTAINED  IN THIS
  PROSPECTUS AND, IF GIVEN  OR MADE, SUCH  INFORMATION OR REPRESENTATION  MUST
  NOT BE RELIED UPON AS HAVING BEEN AUTHORIZED BY G.T. INVESTMENT FUNDS, INC.,
  GT  GLOBAL DEVELOPING MARKETS FUND, CHANCELLOR LGT ASSET MANAGEMENT, INC. OR
  GT GLOBAL, INC.  THIS PROSPECTUS  DOES NOT CONSTITUTE  AN OFFER  TO SELL  OR
  SOLICITATION OF ANY OFFER TO BUY ANY OF THE SECURITIES OFFERED HEREBY IN ANY
  JURISDICTION  TO ANY PERSON IN  SUCH JURISDICTION TO WHOM  IT IS UNLAWFUL TO
  MAKE SUCH OFFER.
 
                                                                   GROSX703   MC
<PAGE>
                          G.T. INVESTMENT FUNDS, INC.
                           PART C: OTHER INFORMATION
 
ITEM 24. FINANCIAL STATEMENTS AND EXHIBITS
 
   
    (a) FINANCIAL STATEMENTS -- To Be Filed
    
 
    (b) EXHIBITS REQUIRED BY PART C, ITEM 24 OF FORM N-1A.
 
   
         (1)(a)     The Registrant's Articles of Incorporation dated October 27,
                    1987 (4).
         (1)(b)     Articles Supplementary to Registrant's Articles of
                    Incorporation dated December 18, 1987 (4).
         (1)(c)     Articles Supplementary to Registrant's Articles of
                    Incorporation dated February 17, 1988 (4).
         (1)(d)     Articles of Amendment to Registrant's Articles of
                    Incorporation dated March 29, 1988 (4).
         (1)(e)     Articles Supplementary to Registrant's Articles of
                    Incorporation dated April 27, 1989 (4).
         (1)(f)     Articles Supplementary to Registrant's Articles of
                    Incorporation dated July 18, 1991 (4).
         (1)(g)     Articles Supplementary to Registrant's Articles of
                    Incorporation dated July 31, 1991 (4).
         (1)(h)     Articles Supplementary to Registrant's Articles of
                    Incorporation dated December 31, 1991 (4).
         (1)(i)     Articles Supplementary to Registrant's Articles of
                    Incorporation dated March 11, 1992 (4).
         (1)(j)     Articles Supplementary to Registrant's Articles of
                    Incorporation dated August 31, 1992 (4).
         (1)(k)     Articles of Amendment to Registrant's Articles of
                    Incorporation dated January 25, 1993 (4).
         (1)(l)     Articles Supplementary to Registrant's Articles of
                    Incorporation dated November 15, 1993 (4).
         (1)(m)     Articles Supplementary to Registrant's Articles of
                    Incorporation dated January 26, 1994 (4).
         (1)(n)     Articles Supplementary to Registrant's Articles of
                    Incorporation dated January 26, 1994 (4).
         (1)(o)     Articles Supplementary to Registrant's Articles of
                    Incorporation dated September 23, 1994 (4).
         (1)(p)     Articles Supplementary to Registrant's Articles of
                    Incorporation dated January 30, 1995 (2).
         (2)        Registrant's By-Laws (4).
         (3)        Voting Trust Agreement. Not applicable.
         (4)        Instruments defining the rights of holders of the
                    Registrant's shares of common stock (6).
         (5)(a)     Investment Management and Administration Contract dated
                    April 19, 1989 (4).
         (5)(b)     Investment Management and Administration Contract Fee Letter
                    relating to:
 
    
 
                  (i) GT Global Growth & Income Fund (4).
 
                  (ii) GT Global Latin America Growth Fund and GT Global Small
                       Companies Fund (4).
 
                 (iii) GT Global Telecommunications Fund (4).
 
                 (iv) Withdrawn
 
                                      C-1
<PAGE>
                  (v) GT Global Emerging Markets Fund (4).
 
   
                 (vi) GT Global Developing Markets Fund -- to be filed.
    
 
         (5)(c)     Administration Contract relating to:
 
                  (i) GT Global High Income Fund (4).
 
                  (ii) (Form of Administration Contract) GT Global
                       Infrastructure Fund, GT Global Natural Resources Fund and
                       GT Global Financial Services Fund (4).
 
         (5)(d)     Administration Contract Fee Letter relating to the GT Global
                    Consumer Products and Services Fund (2).
 
         (6)(a)     Distribution Agreement relating to Class A shares (4).
         (6)(b)     Distribution Agreement relating to Class B shares (4).
         (6)(c)     Distribution Agreement relating to Advisor Class shares (6).
         (7)        Not applicable.
         (8)        The Custodian Agreement between the Registrant and State
                    Street Bank and Trust Company (4).
         (9)(a)     The Transfer Agent Contract dated May 25, 1990 (4).
         (9)(b)     Other material contracts:
 
                  (i) Broker/dealer sales contract (4).
 
                  (ii) Bank sales contract (4).
 
                 (iii) Agency sales contract (4).
 
                 (iv) Foreign sales contract (4).
 
        (10)(a)     Opinion and consent of counsel relating to GT Global
                    Government Income Fund and GT Global Strategic Income Fund
                    (formerly G.T. Global Bond Fund) (4).
        (10)(b)     Opinion and consent of counsel relating to GT Global Health
                    Care Fund (4).
        (10)(c)     Opinion and consent of counsel relating to GT Global Growth
                    & Income Fund (4).
        (10)(d)     Opinion and consent of counsel relating to GT Global Latin
                    America Growth Fund and GT Global Small Companies Fund (4).
        (10)(e)     Opinion and consent of counsel relating to GT Global
                    Telecommunications Fund and GT Global Financial Services
                    Fund (4).
        (10)(f)     Opinion and consent of counsel relating to GT Global
                    Emerging Markets Fund (4).
        (10)(g)     Opinion and consent of counsel relating to GT Global High
                    Income Fund (4).
        (10)(h)     Opinion and consent of counsel relating to GT Global
                    Infrastructure Fund and GT Global Natural Resources Fund
                    (4).
        (10)(i)     Opinion and consent of counsel relating to GT Global
                    Consumer Products and Services Fund and GT Global Financial
                    Services Fund (4).
        (10)(j)     Opinion and consent of counsel relating to GT Global
                    Developing Markets Fund -- to be filed.
        (11)(a)     Consents of Coopers & Lybrand L.L.P., Independent
                    Accountants, relating to:
 
                  (i) GT  Global Consumer Products and  Services Fund, GT Global
                      Financial Services Fund,  GT Global Health  Care Fund,  GT
                      Global  Infrastructure Fund,  GT Global  Natural Resources
                      Fund, GT Global Telecommunications Fund (6).
 
                                      C-2
<PAGE>
   
                  (ii) GT Global  Government Income  Fund, GT  Global  Strategic
                       Income Fund and GT Global High Income Fund (6).
    
 
   
                 (iii) GT  Global Growth & Income Fund and GT Developing Markets
                       Fund -- to be filed (6).
    
 
   
                 (iv) GT Global Latin America Growth Fund and GT Global Emerging
                      Markets Fund (6).
    
 
   
        (12)        Not applicable.
        (13)        Not applicable.
        (14)        Model retirement plan -- GT Global Individual Retirement
                    Account Disclosure Statement and Application (6).
        (15)(a)     Distribution Plan adopted pursuant to Rule 12b-1 relating to
                    Class A Shares (4).
        (15)(b)     Distribution Plan adopted pursuant to Rule 12b-1 relating to
                    Class B Shares (4).
        (16)        Schedules of Computation of Performance Data relating to the
                    Class A, Class B and Advisor Class shares of:
 
    
 
                  (i) GT Global Government Income Fund (5).
 
                  (ii) GT Global Strategic Income Fund (5).
 
                 (iii) GT Global Health Care Fund (5).
 
                 (iv) GT Global Growth & Income Fund (5).
 
                  (v) GT Global Latin America Growth Fund (5).
 
                 (vi) GT Global Telecommunications Fund (5).
 
                 (vii) GT Global Emerging Markets Fund (5).
 
                (viii) GT Global High Income Fund (5).
 
                 (ix) GT Global Financial Services Fund (5).
 
                  (x) GT Global Infrastructure Fund (5).
 
                 (xi) GT Global Natural Resources Fund (5).
 
                 (xii) GT Global Consumer Products and Services Fund (5).
 
   
        (17)        Financial Data Schedules (6).
        (18)        Multiple Class Plan adopted pursuant to Rule 18f-3 (6).
 
    
 
   
Other Exhibits:
        (a)         Power of Attorney -- superseded.
        (b)         Power of Attorney -- superseded.
        (c)         Powers of Attorney for Helge K. Lee, Peter R. Guarino and
                    David J. Thelander for G.T. Investment Funds, Inc. and
                    Global Investment Portfolio (2).
        (d)         Powers of Attorney for Helge K. Lee, Peter R. Guarino and
                    David J. Thelander for Global High Income Portfolio (3).
        (e)         Power of Attorney for David J. Thelander, Daniel R. Waltcher
                    and Matthew M. O'Toole for G.T. Investment Funds, Inc. (6).
        (f)         Power of Attorney for David J. Thelander, Daniel R. Waltcher
                    and Matthew M. O'Toole for the Global Investment Portfolio
                    (6).
        (g)         Power of Attorney for David J. Thelander, Daniel R. Waltcher
                    and Matthew M. O'Toole for the Global High Income Portfolio
                    (6).
        (h)         Power of Attorney for David J. Thelander, Daniel R. Waltcher
                    and Matthew M. O'Toole for G.T. Investment Funds, Inc. (6).
        (i)         Power of Attorney for David J. Thelander, Daniel R. Waltcher
                    and Matthew M. O'Toole for Global Investment Portfolio (6).
 
                                      C-3
    
<PAGE>
   
<TABLE>
<S>                 <C>
        (j)         Power of Attorney for David J. Thelander, Daniel R. Waltcher
                    and Matthew M. O'Toole for Global High Income Portfolio (6).
        (k)         Power of Attorney for Phillip S. Gillespie and Michael A.
                    Silver for G.T. Investment Funds, Inc. -- filed herewith.
</TABLE>
    
 
- ------------------------
(1)  Incorporated  by  reference  to  the  identically  enumerated  Exhibit   of
    Post-Effective  Amendment No. 16 to the Registration Statement on Form N-1A,
    filed on January 17, 1992.
 
(2)  Incorporated  by  reference  to  the  identically  enumerated  Exhibit   of
    Post-Effective  Amendment No. 42 to the Registration Statement on Form N-1A,
    filed on June 30, 1995.
 
(3)  Incorporated  by  reference  to  the  identically  enumerated  Exhibit   of
    Post-Effective  Amendment No. 43 to the Registration Statement on Form N-1A,
    filed on December 29, 1995.
 
(4)  Incorporated  by  reference  to  the  identically  enumerated  Exhibit   of
    Post-Effective  Amendment No. 46 to the Registration Statement on Form N-1A,
    filed on December 30, 1996.
 
(5)  Incorporated  by  reference  to  the  identically  enumerated  Exhibit   of
    Post-Effective  Amendment No. 44 to the Registration Statement on Form N-1A,
    filed on February 28, 1996.
 
   
(6)  Incorporated  by  reference  to  the  identically  enumerated  Exhibit   of
    Post-Effective  Amendment No. 47 to the Registration Statement on Form N-1A,
    filed on February 26, 1997.
    
 
ITEM 25. PERSONS CONTROLLED BY OR UNDER COMMON CONTROL WITH THE REGISTRANT
 
    None.
 
                                      C-4
<PAGE>
   
ITEM 26. NUMBER OF HOLDERS OF SECURITIES AS OF AUGUST 13, 1997.
    
 
   
<TABLE>
<CAPTION>
                                                                                                  NUMBER OF RECORD
TITLE OF CLASS                                                                                        HOLDERS
- ------------------------------------------------------------------------------------------------  ----------------
<S>                                                                                               <C>
   Capital Stock, $.0001 par value, of:
      GT Global Growth & Income Fund Class A....................................................          20,502
      GT Global Growth & Income Fund Class B....................................................          31,269
      GT Global Growth & Income Fund Advisor Class..............................................             182
      GT Global Strategic Income Fund Class A...................................................          10,604
      GT Global Strategic Income Fund Class B...................................................          20,155
      GT Global Strategic Income Fund Advisor Class.............................................              80
      GT Global Government Income Fund Class A..................................................          12,646
      GT Global Government Income Fund Class B..................................................           8,136
      GT Global Government Income Fund Advisor Class............................................              41
      GT Global High Income Fund Class A........................................................           8,104
      GT Global High Income Fund Class B........................................................          13,573
      GT Global High Income Fund Advisor Class..................................................             279
      GT Global Health Care Fund Class A........................................................          38,428
      GT Global Health Care Fund Class B........................................................          13,353
      GT Global Health Care Fund Advisor Class..................................................             185
      GT Global Latin America Growth Fund Class A...............................................          23,078
      GT Global Latin America Growth Fund Class B...............................................          20,001
      GT Global Latin America Growth Fund Advisor Class.........................................             186
      GT Global Telecommunications Fund Class A.................................................          97,941
      GT Global Telecommunications Fund Class B.................................................          90,690
      GT Global Telecommunications Fund Advisor Class...........................................             239
      GT Global Financial Services Fund Class A.................................................           3,027
      GT Global Financial Services Fund Class B.................................................           4,269
      GT Global Financial Services Fund Advisor Class...........................................              83
      GT Global Infrastructure Fund Class A.....................................................           6,032
      GT Global Infrastructure Fund Class B.....................................................           7,773
      GT Global Infrastructure Fund Advisor Class...............................................             146
      GT Global Natural Resources Fund Class A..................................................           6,946
      GT Global Natural Resources Fund Class B..................................................           8,367
      GT Global Natural Resources Fund Advisor Class............................................             191
      GT Global Emerging Markets Fund Class A...................................................          25,610
      GT Global Emerging Markets Fund Class B...................................................          28,884
      GT Global Emerging Markets Fund Advisor Class.............................................             308
      GT Global Currency Fund...................................................................               1
      GT Global Small Companies Fund............................................................               1
      GT Global Consumer Products and Services Fund Class A.....................................           8,539
      GT Global Consumer Products and Services Fund Class B.....................................          10,233
      GT Global Consumer Products and Services Fund Advisor Class...............................             222
      GT Global Developing Markets Fund Class A.................................................               0
      GT Global Developing Markets Fund Class B.................................................               0
      GT Global Developing Markets Fund Advisor Class...........................................               0
</TABLE>
    
 
ITEM 27. INDEMNIFICATION
 
    Article VII(g) of  the Registrant's Articles  of Incorporation provides  for
indemnification of certain persons acting on behalf of the Fund.
 
                                      C-5
<PAGE>
   
    Insofar  as indemnification for liabilities arising under the Securities Act
of 1933, as amended  ("1933 Act"), may be  permitted to Directors, officers  and
controlling  persons by the Registrant's  Articles of Incorporation, By-Laws, or
otherwise, the Registrant has been advised that in the opinion of the Securities
and Exchange Commission  ("Commission") such indemnification  is against  public
policy  as expressed in the  1933 Act, and is,  therefore, unenforceable. In the
event that a claim for indemnification against such liabilities (other than  the
payment by the Registrant of expenses incurred or paid by a Director, officer or
controlling  person of the  Registrant in the successful  defense of any action,
suit or proceeding) is asserted by such Director, officer or controlling  person
in  connection with the securities being registered, the Registrant will, unless
in the  opinion  of its  counsel  the matter  has  been settled  by  controlling
precedent,  submit to a  court of appropriate  jurisdiction the question whether
such indemnification by it is against public policy as expressed in the 1933 Act
and will be governed by the final adjudication of such issues.
    
 
ITEM 28. BUSINESS AND OTHER CONNECTIONS OF INVESTMENT ADVISER
 
    See  the  material  under  the  heading  "Management"  included  in  Part  A
(Prospectus)  of this  Amendment and the  material appearing  under the headings
"Directors and  Officers" and  "Management"  included in  Part B  (Statement  of
Additional  Information) of this Amendment. Information  as to the Directors and
Officers of the Adviser is included in its Form ADV (File No. 801-10254),  filed
with the Commission, which is incorporated herein by reference thereto.
 
ITEM 29. PRINCIPAL UNDERWRITERS
 
   
    (a)  GT Global,  Inc. is  also the  principal underwriter  for the following
other investment  companies:  G.T.  Global Growth  Series  (which  includes  the
following  funds:  GT Global  America Value  Fund, GT  Global America  Small Cap
Growth Fund, GT  Global America  Mid Cap Growth  Fund, GT  Global Europe  Growth
Fund,  GT  Global International  Growth Fund,  GT Global  Japan Growth  Fund, GT
Global New  Pacific Growth  Fund  and GT  Global  Worldwide Growth  Fund);  G.T.
Investment  Portfolios, Inc. (which  includes one fund:  GT Global Dollar Fund);
G.T. Global Variable Investment Series (which includes five funds in  operation:
GT  Global Variable New Pacific Fund, GT  Global Variable Europe Fund, GT Global
Variable America Fund, GT Global Variable International Fund and GT Global Money
Market Fund); G.T. Global Variable Investment Trust (which includes seven  funds
in  operation:  GT  Global  Variable  Latin  America  Fund,  GT  Global Variable
Telecommunications Fund,  GT Global  Variable Growth  & Income  Fund, GT  Global
Variable  Strategic Income  Fund, GT Global  Variable Emerging  Markets Fund, GT
Global Variable  Global  Government Income  Fund  and GT  Global  Variable  U.S.
Government Income Fund); and GT Global Floating Rate Fund, Inc.
    
 
                                      C-6
<PAGE>
    (b) Directors and Officers of GT Global, Inc.
 
    Unless otherwise indicated, the business address of each person listed is 50
California Street, San Francisco, CA 94111.
 
   
<TABLE>
<CAPTION>
                                              POSITIONS AND OFFICES               POSITIONS AND OFFICES
NAME                                          WITH UNDERWRITER                    WITH REGISTRANT
- --------------------------------------------  ----------------------------------  ----------------------------------
<S>                                           <C>                                 <C>
William J. Guilfoyle                          President and Chairman of the       Chairman of the Board of Directors
                                                Board                               and President
Raymond R. Cunningham                         Director and Senior Vice President  None
                                                and Director of Sales
Richard Healey                                Director and Senior Vice President  None
                                                and Director of Retail Marketing
Helge K. Lee                                  Secretary                           Secretary
Phillip S. Gillespie                          Assistant Secretary                 Assistant Secretary
Daniel T. Phillips                            Vice President -- Retirement        None
                                                Product Marketing
David P. Hess                                 Assistant Secretary                 Assistant Secretary
Philip D. Edelstein                           Senior Vice President -- Regional   None
9 Huntly Circle                                 Sales Manager
Palm Beach Gardens, FL 33418
Stephen A. Maginn                             Senior Vice President -- Regional   None
519 S. Juanita                                  Sales Manager
Redondo Beach, CA 90277
Peter J. Wolfert                              Senior Vice President --            None
                                                Information Technology
Christine M. Pallatto                         Senior Vice President -- Human      None
                                                Resources
Margo A. Tammen                               Vice President -- Finance &         None
                                                Administration
Gary M. Castro                                Assistant Treasurer & Controller    None
Dennis W. Reichert                            Assistant Treasurer & Budget        None
                                                Director
Jon Burke                                     Vice President                      None
31 Darlene Drive
Southboro, MA 01772
Phil Christopher                              Vice President                      None
3621 59th Avenue, SW
Seattle, WA 98116
Anthony DiBacco                               Vice President                      None
30585 Via Lindosa Way
Laguna Niguel, CA 92677
</TABLE>
    
 
                                      C-7
<PAGE>
   
<TABLE>
<CAPTION>
                                              POSITIONS AND OFFICES               POSITIONS AND OFFICES
NAME                                          WITH UNDERWRITER                    WITH REGISTRANT
- --------------------------------------------  ----------------------------------  ----------------------------------
<S>                                           <C>                                 <C>
Stephen Duffy                                 Vice President                      None
1120 Gables Drive
Atlanta, GA 30319
Ned E. Hammond                                Vice President                      None
5901 McFarland Ct.
Plano, TX 75093
Campbell Judge                                Vice President                      None
4312 Linden Hills Blvd., #202
Minneapolis, MN 55410
Richard Kashnowski                            Vice President                      None
1368 South Ridge Drive
Mandeville, LA 70448
Robin Kraebel                                 Vice President                      None
49 Bergin Avenue
Waldwick, NJ 07463
Allen M. Kuhn                                 Vice President                      None
19655 Red Maple Lane
Jupiter, FL 33458
Jeffrey S. Kulik                              Vice President                      None
6540 Autumn Wind Circle
Clarksville, MD 21029
Steven C. Manns                               Vice President                      None
3025 Caswell Drive
Troy, MI 48084
Wayne F. Meyer                                Vice President                      None
2617 Sun Meadow Drive
Chesterfield, MO 63005
Dean Phillips                                 Vice President                      None
3406 Bishop Park Drive, #428
Winter Park, FL 32792
Anthony R. Rogers                             Vice President                      None
100 Southbank Drive
Cary, NC 27511
Philip Schertz                                Vice President                      None
25 Ivy Place
Wayne, NJ 07470
Peter Sykes                                   Vice President                      None
1655 E. Sherman Ave.
Salt Lake City, UT 84105
Lance Vetter                                  Vice President                      None
10915 La Salinas Circle
Boca Raton, FL 33428
Tommy D. Wells                                Vice President                      None
25 Crane Drive
San Anselmo, CA 94960
</TABLE>
    
 
                                      C-8
<PAGE>
<TABLE>
<CAPTION>
                                              POSITIONS AND OFFICES               POSITIONS AND OFFICES
NAME                                          WITH UNDERWRITER                    WITH REGISTRANT
- --------------------------------------------  ----------------------------------  ----------------------------------
<S>                                           <C>                                 <C>
Todd H. Westby                                Vice President                      None
3405 Goshen Road
Newtown Square, PA 19073
Eric T. Zeigler                               Vice President                      None
3100 The Strand
Manhattan Beach, CA 90266
</TABLE>
 
    (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  investment  manager, Chancellor  LGT Asset
Management, Inc., 50  California Street, 27th  Floor, San Francisco,  California
94111.
 
    Records  covering stockholder  accounts and portfolio  transactions are also
maintained and  kept by  the  Registrant's Transfer  Agent, GT  Global  Investor
Services,  Inc.,  2121 N.  California Boulevard,  Suite  450, Walnut  Creek, CA,
94596, and by the Registrant's Custodian,  State Street Bank and Trust  Company,
225 Franklin Street, Boston, Massachusetts 02110.
 
ITEM 31. MANAGEMENT SERVICES
 
    None.
 
ITEM 32. UNDERTAKINGS
 
   
    None.
    
 
                                      C-9
<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 15th day of August, 1997.
 
                                          G.T. INVESTMENT FUNDS, INC.
 
                                          By:  William J. Guilfoyle*
                                               President
 
    Pursuant  to  the  requirements  of   the  Securities  Act  of  1933,   this
Post-Effective Amendment to the Registration Statement of G.T. Investment Funds,
Inc.  has been signed below by the following persons in the capacities indicated
on the 15th day of August, 1997.
 
                                          President, Director and
William J. Guilfoyle*                     Chairman of the Board
                                          (Principal Executive Officer)
 
  /s/  KENNETH W. CHANCEY
- ----------------------------------------  Vice President and Principal
Kenneth W. Chancey                        Accounting Officer
 
C. Derek Anderson*                        Director
 
Arthur C. Patterson                       Director
 
Frank S. Bayley*                          Director
 
Ruth H. Quigley*                          Director
 
Robert G. Wade, Jr.*                      Director
 
*By:   /s/  PHILLIP S. GILLESPIE
     -----------------------------------
     Phillip S. Gillespie
     Attorney-in-Fact, pursuant to
     Power of Attorney filed herewith
 
                                      C-10

<PAGE>
   
                               POWER OF ATTORNEY
    
 
   
    Each  person whose signature  appears below hereby  constitutes and appoints
Phillip S. Gillespie and Michael A. Silver, and each of them, with full power to
act without the other,  his or her true  and lawful attorney-in-fact and  agent,
with full power of substitution and resubstitution, for him or her and in his or
her  name, place and stead, in any and all capacities (until revoked in writing)
to  sign  the  Registration  Statement  and  any  and  all  Amendments  to   the
Registration  Statement (including  Post-Effective Amendments), and  to file the
same, with all exhibits  thereto, and other  documents in connection  therewith,
with    the   Securities   and   Exchange   Commission,   granting   unto   said
attorneys-in-fact and agents, and each of  them, full power and authority to  do
and  perform each and every act and thing ratifying and confirming all that said
attorneys-in-fact and  agents or  any of  them, or  their or  his substitute  or
substitutes, may lawfully do or cause to be done by virtue hereof.
    
 
   
                          G.T. INVESTMENT FUNDS, INC.
    
 
   
<TABLE>
<S>                                       <C>                                     <C>
  /s/  WILLIAM J. GUILFOYLE
- ----------------------------------------  Director, Chairman of                   August 13, 1997
William J. Guilfoyle                      the Board and President
 
  /s/  C. DEREK ANDERSON
- ----------------------------------------  Director                                August 13, 1997
C. Derek Anderson
 
  /s/  FRANK S. BAYLEY
- ----------------------------------------  Director                                August 13, 1997
Frank S. Bayley
 
- ----------------------------------------  Director
Arthur C. Patterson
 
  /s/  RUTH H. QUIGLEY
- ----------------------------------------  Director                                August 13, 1997
Ruth H. Quigley
 
  /s/  ROBERT G. WADE JR.
- ----------------------------------------  Director                                August 13, 1997
Robert G. Wade Jr.
</TABLE>
    
 
                                      C-11


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