LOOMIS SAYLES FUNDS
485BPOS, 1997-03-10
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<PAGE>
 
    
As filed with the Securities and Exchange Commission on March 10, 1997
Registration Nos. 811-6241 and 33-39133     


                      SECURITIES AND EXCHANGE COMMISSION
                            WASHINGTON, D.C.  20549

                                   ---------    

                                   FORM N-1A
                            REGISTRATION STATEMENT
                                     UNDER
                          THE SECURITIES ACT OF 1933                  [X]

                        Pre-Effective Amendment No. ___               [_]
                            
                        Post-Effective Amendment No. 12               [X]

                                      and
                            REGISTRATION STATEMENT
                                     UNDER
                      THE INVESTMENT COMPANY ACT OF 1940              [X]
                           
                               Amendment No. 14                       [X]
                       (Check appropriate box or boxes)

                                   ---------    

                              LOOMIS SAYLES FUNDS
              (Exact name of registrant as specified in charter)

                     One Financial Center, Boston, MA 02111
                    (Address of principal executive offices)

      Registrant's telephone number, including area code: (617) 482-2450

Name and address
of agent for service                             with a copy to
- --------------------                             ---------------
Daniel J. Fuss                                   Truman S. Casner, Esq.
Loomis, Sayles & Company, Incorporated           Ropes & Gray
One Financial Center                             One International Place
Boston, MA 02111                                 Boston, MA  02110

<PAGE>
 
It is proposed that this filing will become effective (check appropriate box)
 
[_]  immediately upon filing pursuant to paragraph (b)
     
[X]  on April 1, 1997 pursuant to paragraph (b)     
 
[_]  60 days after filing pursuant to paragraph (a)(2)
 
[_]  on [date] pursuant to paragraph (a)(1)
     
[_]  75 days after filing pursuant to paragraph (a)(2)     

[_]  on [date] pursuant to pargraph (a)(2) of Rule 485


If appropriate, check the following box:

[_]  This post-effective amendment designates a new effective date for a
previously filed post-effective amendment.


                       DECLARATION PURSUANT TO RULE 24f-2
                       ----------------------------------
    
     Pursuant to Rule 24f-2 under the Investment Company Act of 1940, the
Registrant has registered an indefinite number or amount of its shares of
beneficial interest under the Securities Act of 1933.  The Registrant filed a
Rule 24f-2 Notice with respect to the Registrant's fiscal year ended December
31, 1996 on February 28, 1997.     
<PAGE>
 
                              LOOMIS SAYLES FUNDS

                             Cross Reference Sheet

                          Items required by Form N-1A

PART A

Item  Registration Statement Caption          Caption in Prospectus
No.                                           
      
1.    Cover Page                              Cover Page
      
2.    Synopsis                                Summary of Expenses
      
3.    Condensed Financial Information         Financial Highlights
      
4.    General Description of                  Cover Page; The Trust; Investment
       Registrant                             Objectives and Policies; More
                                              Information About the Funds'
                                              Investments and Risk
                                              Considerations
      
5.    Management of the Fund                  Cover Page; The Trust; The Funds' 
                                              Investment Adviser; Fund Expenses;
                                              Portfolio Transactions; Back Cover

5A.   Management's Discussion of              More Information about the Funds'
       Fund Performance                       Investments and Risk
                                              Considerations; Performance
                                              Information
      
6.    Capital Stock and Other Securities      The Trust; Shareholder Services;
                                              Dividends, Capital Gain
                                              Distributions and Taxes
      
7.    Purchase of Securities Being            How to Purchase Shares; Share-
       Offered                                holder Services
      
8.    Redemption or Repurchase                How to Redeem Shares
      
9.    Pending Legal Proceedings               Not Applicable

<PAGE>
 
PART B
 
Item  Registration Statement Caption          Caption in Statement of 
No.                                           Additional Information
      
 
10.   Cover Page                              Cover Page

11.   Table of Contents                       Table of Contents

12.   General Information and History         Not Applicable

13.   Investment Objectives and Policies      Investment Objectives, Policies 
                                              and Restrictions

14.   Management of the Fund                  Management of the Trust

15.   Control Persons and Principal           Management of the Trust
       Holder of Securities                   

16.   Investment Advisory and Other           Investment Advisory and Other 
       Services                               Services

17.   Brokerage Allocation and Other          Portfolio Transactions and 
       Practices                              Brokerage

18.   Capital Stock and Other Securities      How to Redeem Shares (Prospectus);
                                              Redemptions; Dividends, Capital
                                              Gain Distributions and Taxes
                                              (Prospectus); Income Dividends,
                                              Capital Gain Distributions and Tax
                                              Status; Description of the Trust
 
19.   Purchase, Redemption and Pricing        How to Purchase Shares
       Of Securities Being Offered            (Prospectus); Shareholder
                                              Services; How to Redeem Shares
                                              (Prospectus); Redemptions; Net
                                              Asset Value and Public Offering
                                              Price
 
20.   Tax Status                              Dividends, Capital Gain
                                              Distributions and Taxes
                                              (Prospectus); Income Dividends,
                                              Capital Gain Distributions and Tax
                                              Status
 
21.   Underwriters                            Not Applicable
 
22.   Calculations of Performance Data        Calculation of Yield and Total
                                              Return; Performance Data
 
23.   Financial Statements                    Financial Statements

PART C

The information required to be included in Part C is set forth under the 
appropriate Item, so numbered, in Part C of the Registration Statement.
<PAGE>
 
                           ------------------------
                           LOOMIS SAYLES FUNDS (TM)
                           ======================== 

                                     The Power of A Passion.(TM)
 
      EQUITY FUNDS RETAIL CLASS
 
 
      PROSPECTUS
    
      APRIL 1, 1997     
<PAGE>
 

                          ------------------------
                           LOOMIS SAYLES FUNDS (TM)
                          ========================

                                     The Power of Passion.(TM)

      ONE FINANCIAL CENTER . BOSTON, MASSACHUSETTS 02111 . (617) 482-2450
 
THE LOOMIS SAYLES FUNDS--EQUITY FUNDS
 
 RETAIL CLASS SHARES OF:
 
 
 
  LOOMIS SAYLES CORE VALUE FUND (FORMERLY, LOOMIS SAYLES GROWTH & INCOME FUND)
 
  LOOMIS SAYLES GROWTH FUND
 
  LOOMIS SAYLES INTERNATIONAL EQUITY FUND
 
  LOOMIS SAYLES MID-CAP GROWTH FUND
 
  LOOMIS SAYLES MID-CAP VALUE FUND
 
  LOOMIS SAYLES SMALL CAP GROWTH FUND
 
  LOOMIS SAYLES SMALL CAP VALUE FUND (FORMERLY, LOOMIS SAYLES SMALL CAP FUND)
 
  LOOMIS SAYLES STRATEGIC VALUE FUND
 
  LOOMIS SAYLES WORLDWIDE FUND
 
<PAGE>

     
PROSPECTUS                                                        APRIL 1, 1997
      
THE LOOMIS SAYLES FUNDS--EQUITY FUNDS
 
  Loomis Sayles Core Value Fund (formerly, Loomis Sayles Growth & Income
Fund), Loomis Sayles Growth Fund, Loomis Sayles International Equity Fund,
Loomis Sayles Mid-Cap Growth Fund, Loomis Sayles Mid-Cap Value Fund, Loomis
Sayles Small Cap Growth Fund, Loomis Sayles Small Cap Value Fund (formerly,
Loomis Sayles Small Cap Fund), Loomis Sayles Strategic Value Fund and Loomis
Sayles Worldwide Fund (the "Funds" and each a "Fund"), each a series of Loomis
Sayles Funds, are separately managed, no-load mutual funds, each of which has
its own investment objective and policies. Loomis, Sayles & Company, L.P.
("Loomis Sayles") is the investment adviser of each Fund.
    
  The Funds offer two classes of shares: a Retail Class that is described in
this Prospectus, and an Institutional Class, with a higher minimum investment
for certain categories of investors and bearing lower expenses, that is de-
scribed in a separate prospectus. This Prospectus concisely describes the in-
formation that an investor should know before investing in the Retail Class
shares of any Fund. Please read it carefully and keep it for future reference.
A Statement of Additional Information dated April 1, 1997, is available free
of charge; write to Loomis Sayles Distributors, L.P. (the "Distributor"), One
Financial Center, Boston, Massachusetts 02111 or telephone 800-633-3330. The
Statement of Additional Information, which contains more detailed information
about the Funds, has been filed with the Securities and Exchange Commission
(the "SEC") and is incorporated by reference into this Prospectus. To obtain
more information about the Institutional Class of shares, please call the Dis-
tributor toll-free at 800-633-3330 or contact your financial intermediary.      
 
  For information about:                    For all other information about
   .  Establishing an account               the Funds:
   .  Account procedures and status         CALL 800-633-3330
   .  Exchanges
   .  Shareholder services
  CALL 800-626-9390
 
 
THESE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE SECURITIES AND
EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION NOR HAS THE SECURITIES
AND EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION PASSED UPON THE
ACCURACY OR ADEQUACY OF THIS PROSPECTUS. ANY REPRESENTATION TO THE CONTRARY IS
A CRIMINAL OFFENSE.
 
                                       1
<PAGE>
 
                               TABLE OF CONTENTS
 
<TABLE>     
<CAPTION>
                                                                           PAGE
                                                                           ----
<S>                                                                        <C>
SUMMARY OF EXPENSES.......................................................   3
FINANCIAL HIGHLIGHTS......................................................   5
THE TRUST.................................................................  10
INVESTMENT OBJECTIVES AND POLICIES........................................  10
MORE INFORMATION ABOUT THE FUNDS' INVESTMENTS AND RISK CONSIDERATIONS.....  13
THE FUNDS' INVESTMENT ADVISER.............................................  19
FUND EXPENSES.............................................................  22
PORTFOLIO TRANSACTIONS....................................................  23
HOW TO PURCHASE SHARES....................................................  23
SHAREHOLDER SERVICES......................................................  26
HOW TO REDEEM SHARES......................................................  27
CALCULATION OF PERFORMANCE INFORMATION....................................  28
DIVIDENDS, CAPITAL GAIN DISTRIBUTIONS AND TAXES...........................  29
</TABLE>      
 
                                       2
<PAGE>
 
                              SUMMARY OF EXPENSES
 
  The following information is provided as an aid in understanding the various
expenses that an investor in a Fund will bear indirectly. The information
about each Fund shown below is based on projected expenses of the Retail Class
shares for the 1997 fiscal year. The information below should not be
considered a representation of past or future expenses, as actual expenses may
be greater or less than those shown. Also, the 5% annual return assumed in the
Example should not be considered a representation of investment performance,
as actual performance will vary.
 
<TABLE>
<CAPTION>
                                   CORE              INTERNATIONAL MID-CAP    MID-CAP
                                   VALUE     GROWTH     EQUITY     GROWTH      VALUE
                                   FUND      FUND/2/     FUND       FUND       FUND
                                   -----     ------- ------------- -------    -------
<S>                                <C>       <C>     <C>           <C>        <C>
Shareholder Transaction Expenses:
 Maximum Sales Load Imposed on
  Purchases (as % of offering
  price).........................  none       none       none       none       none
 Maximum Sales Load Imposed on
  Reinvested Dividends (as % of
  (offering price)...............  none       none       none       none       none
 Maximum Deferred Sales Load
  (as % of original purchase
  price or redemption proceeds)..  none       none       none       none       none
 Redemption Fees/1/..............  none       none       none       none       none
 Exchange Fees...................  none       none       none       none       none
Annual Operating Expenses
 (as a percentage of net assets):
 Management Fees.................   .50%       .50%       .75%       .75%       .75%
 12b-1 Fees......................   .25%       .25%       .25%       .25%       .25%
 Other Operating Expenses (after
  expense reimbursements where
  indicated).....................   .35%/2/    .35%       .25%/2/    .25%/2/    .25%/2/
 Total Operating Expenses (after
  expense reimbursements where
  indicated).....................  1.10%/2/   1.10%      1.25%/2/   1.25%/2/   1.25%/2/
Example:
An investor would pay the
 following expenses on a $1,000
 investment assuming a 5% annual
 return (with or without a
 redemption at the end of each
 time period):
 One Year........................  $ 11       $ 11       $ 13       $ 13       $ 13
 Three Years.....................  $ 35       $ 35       $ 40       $ 40       $ 40
</TABLE>
 
                                       3
<PAGE>
 
<TABLE>
<CAPTION>
                                    SMALL CAP     SMALL   STRATEGIC
                                     GROWTH     CAP VALUE   VALUE     WORLDWIDE
                                      FUND        FUND      FUND        FUND
                                    ---------   --------- ---------   ---------
<S>                                 <C>         <C>       <C>         <C>
Shareholder Transactions Expenses:
 Maximum Sales Load Imposed on
  Purchases (as % of offering
  price)..........................    none        none      none        none
 Maximum Sales Load Imposed on
  Reinvested Dividends
  (as % of offering price)........    none        none      none        none
 Maximum Deferred Sales Load
  (as % of original purchase price
  or redemption proceeds).........    none        none      none        none
 Redemption Fees/1/...............    none        none      none        none
 Exchange Fees....................    none        none      none        none
Annual Operating Expenses
 (as a percentage of net assets):
 Management Fees..................     .75%        .75%      .50%        .75%
 12b-1 Fees.......................     .25%        .25%      .25%        .25%
 Other Operating Expenses (after
  expense reimbursements where
  indicated)......................     .25%/2/     .19%      .50%/2/     .25%/2/
 Total Operating Expenses (after
  expense reimbursements where
  indicated)......................    1.25%/2/    1.19%     1.25%/2/    1.25%/2/
Example:
An investor would pay the
 following expenses on a $1,000
 investment assuming a 5% annual
 return (with or without a
 redemption at the end of each
 time period):
 One Year.........................    $ 13        $ 12      $ 13        $ 13
 Three Years......................    $ 40        $ 38      $ 40        $ 40
</TABLE>
- -----------
/1/A $5 charge applies to any wire transfer of redemption proceeds from any
   Fund.
/2/Other Operating Expenses is based on estimated expenses for the 1997 fiscal
   year after giving effect to expense reimbursements. None of the Funds had
   commenced investment operations with respect to Retail Class shares as of
   December 31, 1996. Loomis Sayles has voluntarily agreed, for an indefinite
   period, to limit the Total Operating Expenses of the Growth and Small Cap
   Value Funds to 1.10% and 1.25% of net assets, respectively, and to limit
   the other Funds' Total Operating Expenses to the percentages of net assets
   shown in the table. Without this agreement, estimated Other Operating
   Expenses and Total Operating Expenses would be 0.38% and 1.13%,
   respectively, for the Core Value Fund, 0.42% and 1.42%, respectively, for
   the International Equity Fund, 1.24% and 2.24%, respectively, for the Mid-
   Cap Growth Fund, 0.68% and 1.68%, respectively, for the Mid-Cap Value Fund,
   0.36% and 1.36%, respectively, for the Small Cap Growth Fund, 1.00% and
   1.75%, respectively, for the Strategic Value Fund and 1.80% and 2.80%,
   respectively, for the Worldwide Fund.
 
                                       4
<PAGE>
 
                             FINANCIAL HIGHLIGHTS
           (FOR AN INSTITUTIONAL CLASS SHARE OF EACH INDICATED FUND
                 OUTSTANDING THROUGHOUT THE INDICATED PERIODS)
     
  The following information is included in financial statements of the Funds
that have been audited by Coopers & Lybrand L.L.P., independent accountants.
The information should be read in conjunction with the financial statements
and the notes thereto contained in the Funds' 1996 Annual Report, which is
incorporated by reference in this Prospectus and the Statement of Additional
Information. None of the Funds had commenced investment operations with
respect to Retail Class shares, and the Mid-Cap Growth, Mid-Cap Value, Small
Cap Growth and Strategic Value Funds had not commenced investment operations
with respect to Institutional Class shares, as of December 31, 1996. The
information shown below is for Institutional Class shares of each indicated
Fund; Retail Class shares bear higher expenses than Institutional Class shares
and are expected to have a lower total return than Institutional Class shares.
      
<TABLE>     
<CAPTION>
                                            CORE VALUE FUND
                            ----------------------------------------------------
                                                                         MAY 13*
                                      YEAR ENDED DEC. 31,                  TO
                            -------------------------------------------  DEC. 31
                             1996     1995     1994     1993     1992     1991
                            -------  -------  -------  -------  -------  -------
 <S>                        <C>      <C>      <C>      <C>      <C>      <C>
 Net asset value,
  beginning of period....   $ 14.57  $ 11.80  $ 12.49  $ 11.53  $ 10.54  $10.00
                            -------  -------  -------  -------  -------  ------
 Income from investment
  operations--
 Net investment income
  (loss).................      0.22     0.23     0.15     0.13     0.13    0.12
 Net realized and
  unrealized gain (loss)
  on investments.........      2.83     3.93    (0.26)    1.24     1.36    0.59
                            -------  -------  -------  -------  -------  ------
  Total from investment
   operations............      3.05     4.16    (0.11)    1.37     1.49    0.71
                            -------  -------  -------  -------  -------  ------
 Less distributions--
 Dividends from net
  investment income......     (0.22)   (0.23)   (0.15)   (0.12)   (0.13)  (0.12)
 Distributions from net
  realized capital
  gains..................     (1.80)   (1.16)   (0.43)   (0.29)   (0.37)  (0.05)
                            -------  -------  -------  -------  -------  ------
  Total distributions....     (2.02)   (1.39)   (0.58)   (0.41)   (0.50)  (0.17)
                            -------  -------  -------  -------  -------  ------
 Net asset value, end of
  period.................   $ 15.60  $ 14.57  $ 11.80  $ 12.49  $ 11.53  $10.54
                            =======  =======  =======  =======  =======  ======
 Total return (%)........      21.2     35.2     (0.9)    11.9     14.1     7.2
 Net assets, end of
  period (000)...........   $43,715  $36,465  $25,946  $20,657  $12,279  $7,689
 Ratio of operating
  expenses to average net
  assets (%).............      1.13     1.20     1.33     1.50     1.50    1.50**
 Ratio of net investment
  income to average net
  assets (%).............      1.44     1.61     1.28     1.23     1.42    2.09**
 Portfolio turnover rate
  (%)....................        58       60       48       53       67      27**
 Average commission
  rate***................   $0.0583      --       --       --       --      --
 Without giving effect to
  voluntary expense
  limitations:
 The ratios of operating
  expenses to average net
  assets would have been
  (%)....................      1.13     1.20     1.33     1.56     2.19    2.59**
 Net investment income
  per share would
  have been..............   $  0.22  $  0.23  $  0.15  $  0.12  $  0.07  $ 0.06
</TABLE>      
- -----------
    
  *  Commencement of investment operations.      
 **  Computed on an annualized basis.
    
***  For fiscal periods beginning on or after September 1, 1995, a fund is
     required to disclose its average commission rate per share for trades
     upon which commissions are charged. This rate generally does not reflect
     mark-ups, mark-downs, or spreads on shares traded on a principal basis.
      
                                       5
<PAGE>
 
<TABLE>
<CAPTION>
                                              GROWTH FUND
                            -----------------------------------------------------
                                                                         MAY 16*
                                      YEAR ENDED DEC. 31,                   TO
                            -------------------------------------------  DEC. 31,
                             1996     1995     1994     1993     1992      1991
                            -------  -------  -------  -------  -------  --------
 <S>                        <C>      <C>      <C>      <C>      <C>      <C>
 Net asset value,
  beginning of period....   $ 15.27  $ 12.50  $ 13.02  $ 12.46  $ 12.01  $ 10.00
                            -------  -------  -------  -------  -------  -------
 Income from investment
  operations--Net
  investment income
  (loss).................     (0.07)   (0.00)   (0.02)    0.00    (0.04)    0.00
 Net realized and
  unrealized gain (loss)
  on investments.........      3.08     3.86    (0.45)    1.16     0.49     2.45
                            -------  -------  -------  -------  -------  -------
  Total from investment
   operations............      3.01     3.86    (0.47)    1.16     0.45     2.45
                            -------  -------  -------  -------  -------  -------
 Less distributions--
 Distributions from net
  realized capital
  gains..................     (4.84)   (1.09)   (0.04)   (0.60)    0.00    (0.44)
 Distributions from
  capital................      0.00     0.00    (0.01)    0.00     0.00     0.00
                            -------  -------  -------  -------  -------  -------
  Total distributions....     (4.84)   (1.09)   (0.05)   (0.60)    0.00    (0.44)
                            -------  -------  -------  -------  -------  -------
 Net asset value, end of
  period.................   $ 13.44  $ 15.27  $ 12.50  $ 13.02  $ 12.46  $ 12.01
                            =======  =======  =======  =======  =======  =======
 Total return (%)........      19.9     30.9     (3.7)     9.3      3.8     24.5
 Net assets, end of
  period (000)...........   $39,497  $45,011  $36,580  $32,385  $24,451  $16,105
 Ratio of operating
  expenses to average net
  assets (%).............      1.10     1.08     1.16     1.20     1.50     1.50**
 Ratio of net investment
  income to average net
  assets (%).............     (0.47)   (0.29)   (0.14)   (0.17)   (0.45)    0.01**
 Portfolio turnover rate
  (%)....................        99       48       46       64       98       69**
 Average commission
  rate***................   $0.0600      --       --       --       --        --
 Without giving effect to
  voluntary expense
  limitations:
 The ratios of operating
  expenses to average net
  assets would have
  been (%)...............      1.10     1.08     1.16     1.20     1.51   1.66**
 Net investment income
  per share would
  have been..............   $ (0.07) $  0.00  $ (0.02) $  0.00  $ (0.04) $ (0.01)
</TABLE>
- -----------
  *  Commencement of investment operations.
 **  Computed on an annualized basis.
***  For fiscal periods beginning on or after September 1, 1995, a fund is
     required to disclose its average commission rate per share for trades upon
     which commissions are charged. This rate generally does not reflect mark-
     ups, mark-downs, or spreads on shares traded on a principal basis.
 
                                       6
<PAGE>
 
<TABLE>
<CAPTION>
                                      INTERNATIONAL EQUITY FUND
                           -----------------------------------------------------
                                                                        MAY 10*
                                     YEAR ENDED DEC. 31,                   TO
                           -------------------------------------------  DEC. 31,
                            1996     1995     1994     1993     1992      1991
                           -------  -------  -------  -------  -------  --------
 <S>                       <C>      <C>      <C>      <C>      <C>      <C>
 Net asset value,
  beginning of period....  $ 11.65  $ 11.61  $ 12.90  $  9.64  $ 10.27   $10.00
                           -------  -------  -------  -------  -------   ------
 Income from investment
  operations--
 Net investment income
  (loss).................     0.12     0.14     0.15     0.11     0.10     0.08
 Net realized and
  unrealized gain (loss)
  on investments.........     2.01     0.87    (0.38)    3.61    (0.62)    0.29
                           -------  -------  -------  -------  -------   ------
  Total from investment
   operations............     2.13     1.01    (0.23)    3.72    (0.52)    0.37
                           -------  -------  -------  -------  -------   ------
 Less distributions--
  Dividends from net
   investment income.....    (0.09)   (0.14)   (0.14)   (0.10)   (0.10)   (0.08)
  Distributions from net
   realized capital
   gains.................    (0.53)   (0.83)   (0.92)   (0.36)   (0.01)    0.00
  Distributions from
   capital...............     0.00     0.00     0.00     0.00     0.00    (0.02)
                           -------  -------  -------  -------  -------   ------
   Total distributions...    (0.62)   (0.97)   (1.06)   (0.46)   (0.11)   (0.10)
                           -------  -------  -------  -------  -------   ------
 Net asset value, end of
  period.................  $ 13.16  $ 11.65  $ 11.61  $ 12.90  $  9.64   $10.27
                           =======  =======  =======  =======  =======   ======
   Total return (%)......     18.3      8.7     (1.8)    38.5     (5.1)     3.7
 Net assets, end of
  period (000)...........  $90,662  $79,488  $73,189  $56,560  $14,937   $6,916
 Ratio of operating
  expenses to average net
  assets (%).............     1.42     1.45     1.46     1.50     1.50     1.50**
 Ratio of net investment
  income to average net
  assets (%).............     0.96     1.16     1.30     1.20     1.64     1.55**
 Portfolio turnover rate
  (%)....................      151      133      116      128      101      109**
 Average commission
  rate***................  $0.0013      --       --       --       --       --
 Without giving effect to
  voluntary expense
  limitations:
  The ratios of operating
   expenses to average
   net assets would have
   been (%)..............     1.42     1.45     1.46     1.72     2.77     3.66**
  Net investment income
   per share would
   have been.............  $  0.12  $  0.14  $  0.15  $  0.09  $  0.02   $(0.03)
</TABLE>
- -----------
  *  Commencement of investment operations.
 **  Computed on an annualized basis.
***  For fiscal periods beginning on or after September 1, 1995, a fund is
     required to disclose its average commission rate per share for trades upon
     which commissions are charged. This rate generally does not reflect mark-
     ups, mark-downs, or spreads on shares traded on a principal basis.
     Generally, non-U.S. commissions are lower than U.S. commissions when
     expressed as cents per share but higher when expressed as a percentage of
     transactions because of the lower per-share prices of many non-U.S.
     securities.
 
                                       7
<PAGE>
 
<TABLE>     
<CAPTION>
                                          SMALL CAP VALUE FUND
                            ------------------------------------------------------
                                                                          MAY 13*
                                      YEAR ENDED DEC. 31,                    TO
                            --------------------------------------------  DEC. 31,
                              1996     1995     1994     1993     1992      1991
                            --------  -------  -------  -------  -------  --------
 <S>                        <C>       <C>      <C>      <C>      <C>      <C>
 Net asset value,
  beginning of period....   $  15.33  $ 12.86  $ 14.13  $ 12.88  $ 12.49  $ 10.00
                            --------  -------  -------  -------  -------  -------
 Income from investment
  operations--
 Net investment income
  (loss).................       0.11     0.04    (0.04)    0.00    (0.06)   (0.01)
 Net realized and
  unrealized gain (loss)
  on investments.........       4.47     4.06    (1.12)    3.15     1.67     3.03
                            --------  -------  -------  -------  -------  -------
  Total from investment
   operations............       4.58     4.10    (1.16)    3.15     1.61     3.02
                            --------  -------  -------  -------  -------  -------
 Less distributions--
 Dividends from net
  investment income......      (0.11)   (0.04)    0.00     0.00     0.00     0.00
 Distributions from net
  realized capital
  gains..................      (2.41)   (1.59)   (0.11)   (1.90)   (1.22)   (0.53)
                            --------  -------  -------  -------  -------  -------
  Total distributions....      (2.52)   (1.63)   (0.11)   (1.90)   (1.22)   (0.53)
                            --------  -------  -------  -------  -------  -------
 Net asset value, end of
  period.................   $  17.39  $ 15.33  $ 12.86  $ 14.13  $ 12.88  $ 12.49
                            ========  =======  =======  =======  =======  =======
  Total return (%).......       30.4     32.1     (8.2)    24.7     13.1     30.5
 Net assets, end of
  period (000)...........   $163,625  $90,455  $73,126  $67,553  $39,244  $14,581
 Ratio of operating
  expenses to average net
  assets (%).............       1.19     1.25     1.27     1.35     1.50     1.50**
 Ratio of net investment
  income to average net
  assets (%).............       0.80     0.29    (0.30)   (0.38)   (0.79)   (0.19)*
 Portfolio turnover rate
  (%)....................         73      155       87      106      109       56**
 Average commission
  rate***................     0.0567      --       --       --       --       --
 Without giving effect to
  voluntary expense
  limitations:
 The ratios of operating
  expenses to average net
  assets would have been
  (%)....................       1.19     1.25     1.27     1.35     1.66     2.43**
 Net investment income
  per share would
  have been..............   $   0.11  $  0.04  $ (0.04) $  0.00  $ (0.07) $ (0.06)
</TABLE>      
- -----------
    
  *  Commencement of investment operations.      
 **  Computed on an annualized basis.
    
***  For fiscal periods beginning on or after September 1, 1995, a fund is
     required to disclose its average commission rate per share for trades upon
     which commissions are charged. This rate generally does not reflect mark-
     ups, mark-downs, or spreads on shares traded on a principal basis.      
 
                                       8
<PAGE>
 
<TABLE>     
<CAPTION>
                                                                WORLDWIDE FUND
                                                                --------------
                                                                    MAY 1*
                                                                      TO
                                                                   DEC. 31,
                                                                     1996
                                                                --------------
 <S>                                                            <C>
 Net asset value, beginning of period.........................     $ 10.00
                                                                   -------
 Income from investment operations--
 Net investment income (loss).................................        0.30
 Net realized and unrealized gain (loss) on investments.......        0.63
                                                                   -------
  Total from investment operations............................        0.93
                                                                   -------
 Less distributions--
 Dividends from net investment income.........................       (0.30)
 Distributions from net realized capital gains................        0.00
                                                                   -------
  Total distributions.........................................       (0.30)
                                                                   -------
 Net asset value, end of period...............................     $ 10.63
                                                                   =======
  Total return (%)............................................         9.2
 Net assets, end of period (000)..............................     $ 5,189
 Ratio of operating expenses to average net assets (%)........        1.00**
 Ratio of net investment income to average net assets (%).....        4.62**
 Portfolio turnover rate (%)..................................          76**
 Average commission rate***...................................     $0.0278
 Without giving effect to voluntary expense limitations:
 The ratios of operating expenses to average net assets would
  have been (%)...............................................        3.72**
 Net investment income per share would have been..............     $  0.13
</TABLE>      
- -----------
    
  *  Commencement of investment operations.      
 **  Computed on an annualized basis.
    
***  For fiscal periods beginning on or after September 1, 1995, a fund is
     required to disclose its average commission rate per share for trades
     upon which commissions are charged. This rate generally does not reflect
     mark-ups, mark-downs, or spreads on shares traded on a principal basis.
     Generally, non-U.S. commissions are lower than U.S. commissions when
     expressed as cents per share but higher when expressed as a percentage of
     transactions because of the lower per-share prices of many non-U.S.
     securities.      
     
NOTE:  Further information about each Fund's performance is contained in the
       Funds' annual report to shareholders, which may be obtained without
       charge.      
 
                                       9
<PAGE>
 
                                   THE TRUST
 
  Each Fund is a series of Loomis Sayles Funds (the "Trust"). The Trust is a
diversified open-end management investment company organized as a
Massachusetts business trust on February 20, 1991. The Trust is authorized to
issue an unlimited number of full and fractional shares of beneficial interest
in multiple series. Shares are freely transferable and entitle shareholders to
receive dividends as determined by the Trust's board of trustees and to cast a
vote for each share held at shareholder meetings. The Trust does not generally
hold shareholder meetings and will do so only when required by law.
Shareholders may call meetings to consider removal of the Trust's trustees.
 
                      INVESTMENT OBJECTIVES AND POLICIES
 
LOOMIS SAYLES CORE VALUE FUND
 
  The Fund's investment objective is long-term growth of capital and income.
     
  The Fund seeks to achieve its objective by investing substantially all of
its assets in common stocks or their equivalent that Loomis Sayles considers
to be undervalued in relation to the issuer's earnings, dividends, assets and
growth prospects. The Fund may invest up to 20% of its assets in securities of
foreign issuers. The Fund may also engage in foreign currency hedging
transactions and Rule 144A securities.      
 
LOOMIS SAYLES GROWTH FUND
 
  The Fund's investment objective is long-term growth of capital.
     
  The Fund seeks to achieve its objective by investing substantially all of
its assets in common stocks or their equivalent. Investments are selected
based on their growth potential; current income is not a consideration. The
Fund may invest in companies with relatively small market capitalization, as
well as in larger companies. The Fund may invest up to 20% of its assets in
securities of foreign issuers. The Fund may also engage in foreign currency
hedging transactions and Rule 144A securities.      
 
LOOMIS SAYLES INTERNATIONAL EQUITY FUND
 
  The Fund's investment objective is high total investment return through a
combination of capital appreciation and current income.
     
  The Fund seeks to achieve its objective by investing primarily in equity
securities of companies organized or headquartered outside the United States.
Under normal conditions the Fund will invest at least 65% of its total assets
in      
 
                                      10
<PAGE>

     
equity securities of issuers from at least three countries outside the United
States. For temporary defensive purposes, the Fund may invest as much as 100%
of its assets in issuers from one or two countries, which may include the
United States. The Fund may also engage in foreign currency hedging
transactions, options transactions, and Rule 144A securities.      
 
LOOMIS SAYLES MID-CAP GROWTH FUND
     
  The Fund's investment objective is long-term capital growth from investments
in common stocks or their equivalent.      
     
  The Fund seeks to achieve its objective by investing, under normal market
conditions, at least 65% of its total assets in equity securities of companies
with a market that falls within the capitalization range of companies included
in the Standard & Poor's Mid-Cap 400 Index. Current income is not a
consideration in selecting the Fund's investments. The Fund may invest any
portion of its assets in securities of Canadian issuers and up to 20% of its
assets in the securities of issuers headquartered outside the United States or
Canada. The Fund may also engage in foreign currency hedging transactions,
options and futures transactions, securities lending, and Rule 144A
securities.      
 
LOOMIS SAYLES MID-CAP VALUE FUND
     
  The Fund's objective is long-term capital growth from investments in common
stocks or their equivalent.      
     
  The Fund seeks to achieve its objective by investing, under normal market
conditions, at least 65% of its total assets in equity securities of companies
with a market that falls within the capitalization range of companies included
in the Standard & Poor's Mid-Cap 400 Index. Loomis Sayles seeks to build a
core portfolio of equity securities that it believes to be undervalued by the
market in relation to the issuers' earnings, dividends, assets and growth
prospects and that has a smaller emphasis on special situations and
turnarounds (companies that have experienced significant business problems but
that Loomis Sayles believes have favorable prospects for recovery). Current
income is not a consideration in selecting the Fund's investments. The Fund
may invest any portion of its assets in securities of Canadian issuers and up
to 20% of its assets in the securities of issuers headquartered outside the
United States or Canada. The Fund may also engage in foreign currency hedging
transactions, options and futures transactions, securities lending, and Rule
144A securities.      
 
LOOMIS SAYLES SMALL CAP GROWTH FUND
     
  The Fund's investment objective is long-term capital growth from investments
in common stocks or their equivalent.      
 
                                      11
<PAGE>

     
  The Fund seeks to achieve its objective by investing primarily in equity
securities of small, rapidly growing companies that Loomis Sayles believes
have the potential for accelerating earnings growth and rising profit margins.
The Fund will normally invest at least 65% of its total assets in equity
securities of companies with market capitalization of less than $1 billion and
may invest up to 35% of its total assets in larger companies. Loomis Sayles
seeks companies that have distinctive products, technologies, or services;
dynamic earnings growth; prospects for a high level of profitability; and
outstanding management. Current income is not a consideration in selecting the
Fund's investments. The Fund may invest any portion of its assets in
securities of Canadian issuers and up to 20% of its assets in the securities
of issuers headquartered outside the United States or Canada. The Fund may
also engage in foreign currency hedging transactions, options and futures
transactions, securities lending, and Rule 144A securities.      
 
LOOMIS SAYLES SMALL CAP VALUE FUND
 
  The Fund's investment objective is long-term capital growth from investments
in common stocks or their equivalent.
     
  The Fund seeks to achieve its objective by investing primarily in equity
securities of small capitalization companies with good earnings growth
potential that Loomis Sayles believes are undervalued by the markets. The Fund
will normally invest at least 65% of its total assets in companies with market
capitalization of less than $1 billion and may invest up to 35% of its assets
in larger companies. Loomis Sayles seeks to build a core small capitalization
portfolio of stocks of solid companies with reasonable growth prospects and
that are attractively priced in relation to the companies' earnings with a
smaller emphasis on special situations and turnarounds (companies that have
experienced significant business problems but which Loomis Sayles believes
have favorable prospects for recovery), as well as unrecognized stocks.
Current income is not a consideration in selecting the Fund's investments. The
Fund may invest up to 20% of its assets in securities of foreign issuers. The
Fund may also engage in foreign currency hedging transactions, and Rule 144A
securities.      
 
LOOMIS SAYLES STRATEGIC VALUE FUND
 
  The Fund's investment objective is long-term capital growth from investments
in equity securities.
     
  The Fund seeks to achieve its objective by investing substantially all of
its assets in equity securities that Loomis Sayles considers to be undervalued
by the markets. Stocks are selected based on a combination of quantitative
factors including historical, relative price-earnings ratios; price-earnings
ratios relative to growth rates; relative fundamentals and price momentum; and
qualitative      
 
                                      12
<PAGE>

     
factors including the quality of management, position in the industry, debt
and balance sheet restructuring and product cycles. The Fund's strategy is to
have a relatively concentrated portfolio normally consisting of approximately
35-40 securities that Loomis Sayles considers best positioned to perform in
the current and future environments. The Fund may invest any portion of its
assets in the securities of Canadian issuers and up to 20% of its assets in
securities of issuers headquartered outside the United States or Canada. The
Fund may also engage in foreign currency hedging transactions, options and
futures transactions, securities lending, and Rule 144A securities.      
 
LOOMIS SAYLES WORLDWIDE FUND
 
  The Fund's investment objective is high total investment return through a
combination of capital appreciation and current income.
     
  The Fund seeks to achieve its objective by investing in U.S. and foreign
equity and debt securities. The allocation of the Fund's assets among the four
sectors of domestic equities, international equities, domestic bonds and
international bonds will be made by Loomis Sayles' Global Asset Allocation
group. The Fund will normally invest its assets in securities of issuers from
at least three countries, one of which may be the United States. The Fund may
also invest in collateralized mortgage obligations, zero coupon securities,
when-issued securities and Rule 144A securities. The Fund may engage in
foreign currency hedging transactions and options and forward contract
transactions.      
 
ALL FUNDS
 
  For temporary defensive purposes, each Fund may invest any portion of its
assets in fixed income securities, cash and any other securities deemed
appropriate by Loomis Sayles. Except for each Fund's investment objective, and
any investment policies that are identified a "fundamental," all of the
investment policies of each Fund may be changed without a vote of Fund
shareholders.
 
                 MORE INFORMATION ABOUT THE FUNDS' INVESTMENTS
                            AND RISK CONSIDERATIONS
 
COMMON STOCKS AND OTHER EQUITY SECURITIES
     
  Common stocks and similar equity securities, such as warrants and
convertibles, are volatile and more risky than some other forms of investment.
The value of an investment in a Fund that invests in equity securities may
sometimes decrease. Equity securities of companies with relatively small
market capitalization may be more volatile than the securities of larger, more
established companies and than the broad equity market indexes.      
 
                                      13
<PAGE>
 
DEBT AND OTHER FIXED INCOME SECURITIES
     
  The Worldwide Fund may invest in fixed income securities of any maturity.
Fixed income securities pay a specified rate of interest or dividends, or a
rate that is adjusted periodically by reference to some specified index or
market rate. Fixed income securities include securities issued by federal,
state, local and foreign governments and related agencies, and by a wide range
of private issuers. Because interest rates vary, it is impossible to predict
the yield of a Fund that invests in fixed income securities for any particular
period. The net asset value of such a Fund's shares will vary as a result of
changes in the value of the securities in the Fund's portfolio. Fixed income
securities are subject to market and credit risk. Market risk relates to
changes in a security's value as a result of changes in interest rates
generally. In general, the values of fixed income securities increase when
prevailing interest rates fall and decrease when interest rates rise. Credit
risk relates to the ability of the issuer to make payments of principal and
interest.      
 
ZERO COUPON SECURITIES
 
  The Worldwide Fund may invest in "zero coupon" fixed income securities.
These securities accrue interest at a specified rate, but do not pay interest
in cash on a current basis. A Fund investing in zero coupon securities is
required to distribute the income on these securities to Fund shareholders as
the income accrues, even though the Fund is not receiving the income in cash
on a current basis. Thus the Fund may have to sell other investments to obtain
cash to make income distributions. The market value of zero coupon securities
is often more volatile than that of non-zero coupon fixed income securities of
comparable quality and maturity.
 
COLLATERALIZED MORTGAGE OBLIGATIONS
     
  The Worldwide Fund may invest in collateralized mortgage obligations
("CMOs"). A CMO is a security backed by a portfolio of mortgages or mortgage-
backed securities held under an indenture. CMOs may be issued either by U.S.
Government instrumentalities or by non-governmental entities. The issuer's
obligation to make interest and principal payments is secured by the
underlying portfolio of mortgages or mortgage-backed securities. CMOs are
issued with a number of classes or series which have different maturities and
which may represent interests in some or all of the interest or principal
payments on the underlying collateral or a combination thereof. CMOs of
different classes are generally retired in sequence as the underlying mortgage
loans in the mortgage pool are repaid. In the event of sufficient early
prepayments on such mortgages, the class or series of CMOs first to mature
generally will be retired prior to its maturity. As with other mortgage-backed
securities, the early retirement of a particular class or series of CMOs held
by a Fund could involve      
 
                                      14
<PAGE>

     
the loss of any premium the Fund paid when it acquired the investment and
could result in the Fund's reinvesting the proceeds at a lower interest rate
than the retired CMO paid. Because of the early retirement feature, CMOs may
be more volatile than many other fixed-income investments.      
 
WHEN-ISSUED SECURITIES
 
  Each Fund may purchase securities on a "when-issued" basis. This means that
the Fund will enter into a commitment to buy the security before the security
has been issued. The Fund's payment obligation and the interest rate on the
security are determined when the Fund enters into the commitment. The security
is typically delivered to the Fund 15 to 120 days later. No interest accrues
on the security between the time the Fund enters into the commitment and the
time the security is delivered. If the value of the security being purchased
falls between the time a Fund commits to buy it and the payment date, the Fund
may sustain a loss. The risk of this loss is in addition to the Fund's risk of
loss on the securities actually in its portfolio at the time. In addition,
when the Fund buys a security on a when-issued basis, it is subject to the
risk that market rates of interest will increase before the time the security
is delivered, with the result that the yield on the security delivered to the
Fund may be lower than the yield available on other, comparable securities at
the time of delivery. If a Fund has outstanding obligations to buy when-issued
securities, it will maintain liquid assets in a segregated account at its
custodian bank in an amount sufficient to satisfy these obligations.
 
RULE 144A SECURITIES
 
  Each Fund may invest in Rule 144A securities, which are privately offered
securities that can be resold only to certain qualified institutional buyers.
Rule 144A securities are treated as illiquid, unless Loomis Sayles has
determined, under guidelines established by the Trust's trustees, that the
particular issue of Rule 144A securities is liquid.
 
FOREIGN SECURITIES
     
  Each Fund may invest in securities of issuers organized or headquartered
outside the United States ("foreign securities"). Each of the Core Value,
Growth and Small Cap Value Funds will not purchase a foreign security if, as a
result, the Fund's holdings of foreign securities would exceed 20% of the
Fund's assets. Each of the Mid-Cap Growth, Mid-Cap Value, Small Cap Growth and
Strategic Value Funds may each invest any portion of its assets in securities
of Canadian issuers, but will not purchase foreign securities other than those
of Canadian issuers if, as a result, such Fund's holding of non-U.S. and non-
Canadian securities would exceed 20% of the Fund's assets.      
 
                                      15
<PAGE>

     
  Although investing in foreign securities may increase a Fund's
diversification and reduce portfolio volatility, foreign securities may
present risks not associated with investments in comparable securities of U.S.
issuers. There may be less information publicly available about a foreign
corporate or governmental issuer than about a U.S. issuer, and foreign
corporate issuers are not generally subject to accounting, auditing and
financial reporting standards and practices comparable to those in the United
States. The securities of some foreign issuers are less liquid and at times
more volatile than securities of comparable U.S. issuers. Foreign brokerage
commissions and securities custody costs are often higher than in the United
States. With respect to certain foreign countries, there is a possibility of
governmental expropriation of assets, confiscatory taxation, political or
financial instability and diplomatic developments that could affect the value
of investments in those countries. A Fund's receipt of interest on foreign
government securities may depend on the availability of tax or other revenues
to satisfy the issuer's obligations.      
 
  A Fund's investments in foreign securities may include investments in
countries whose economies or securities markets are not yet highly developed.
Special considerations associated with these investments (in addition to the
considerations regarding foreign investments generally) may include, among
others, greater political uncertainties, an economy's dependence on revenues
from particular commodities or on international aid or development assistance,
currency transfer restrictions, highly limited numbers of potential buyers for
such securities and delays and disruptions in securities settlement
procedures.
 
  Since most foreign securities are denominated in foreign currencies or
traded primarily in securities markets in which settlements are made in
foreign currencies, the value of these investments and the net investment
income available for distribution to shareholders of a Fund investing in these
securities may be affected favorably or unfavorably by changes in currency
exchange rates or exchange control regulations. Changes in the value relative
to the U.S. dollar of a foreign currency in which a Fund's holdings are
denominated will result in a change in the U.S. dollar value of the Fund's
assets and the Fund's income available for distribution.
 
  In addition, although part of a Fund's income may be received or realized in
foreign currencies, the Fund will be required to compute and distribute its
income in U.S. dollars. Therefore, if the value of a currency relative to the
U.S. dollar declines after the Fund's income has been earned in that currency,
translated into U.S. dollars and declared as a dividend, but before payment of
the dividend, the Fund could be required to liquidate portfolio securities to
pay the dividend. Similarly, if the value of a currency relative to the U.S.
dollar declines between the time the Fund accrues expenses in U.S. dollars and
the time such expenses are paid, the amount of such currency required to be
 
                                      16
<PAGE>
 
converted into U.S. dollars will be greater than the equivalent amount in such
currency of such expenses at the time they were incurred.
 
  In determining whether to invest assets of a Fund in securities of a
particular foreign issuer, Loomis Sayles will consider the likely effects of
foreign taxes on the net yield available to the Fund and its shareholders.
Compliance with foreign tax law may reduce a Fund's net income available for
distribution to shareholders.
 
FOREIGN CURRENCY HEDGING TRANSACTIONS
 
  Each Fund that invests in foreign securities may engage in foreign currency
exchange transactions, in connection with the purchase and sale of foreign
securities, to protect the value of specific portfolio positions or in
anticipation of changes in relative values of currencies in which current or
future Fund portfolio holdings are denominated or quoted. For example, to
protect against a change in the foreign currency exchange rate between the
date on which a Fund contracts to purchase or sell a security and the
settlement date for the purchase or sale, or to "lock in" the equivalent of a
dividend or interest payment in another currency, a Fund might purchase or
sell a foreign currency on a spot (that is, cash) basis at the prevailing spot
rate. If conditions warrant, the Funds may also enter into private contracts
to purchase or sell foreign currencies at a future date ("forward contracts").
The Funds might also purchase exchange-listed and over-the-counter call and
put options on foreign currencies. Over-the-counter currency options are
generally less liquid than exchange-listed options, and will be treated as
illiquid assets. The Funds may not be able to dispose of over-the-counter
options readily.
 
  Foreign currency transactions involve costs and may result in losses. In
addition, each Fund's ability to engage in currency hedging transactions may
be limited by tax considerations.
 
OPTIONS AND FUTURES TRANSACTIONS
 
  The International Equity, Mid-Cap Growth, Mid-Cap Value, Small Cap Growth,
Strategic Value and Worldwide Funds may buy, sell or write options on
securities, securities indexes, currencies or futures contracts. The Mid-Cap
Growth, Mid-Cap Value, Small Cap Growth and Strategic Value Funds may buy and
sell futures contracts on securities, securities indexes or currencies. Each
of these Funds may engage in these transactions either for the purpose of
enhancing investment return, or to hedge against changes in the value of other
assets that the Fund owns or intends to acquire. Options and futures fall into
the broad category of financial instruments known as "derivatives" and involve
special risks. Use of options or futures for other than hedging purposes may
be
 
                                      17
<PAGE>
 
considered a speculative activity, involving greater risks than are involved
in hedging.
     
  Options can generally be classified as either "call" or "put" options. There
are two parties to a typical options transaction: the "writer" and the
"buyer." A call option gives the buyer the right to buy a security or other
asset (such as an amount of currency or a futures contract) from, and a put
option gives the buyer the right to sell a security or other asset to, the
option writer at a specified price, on or before a specified date. The buyer
of an option pays a premium when purchasing the option, which reduces the
return on the underlying security or other asset if the option is exercised,
and results in a loss if the option expires unexercised. The writer of an
option receives a premium from writing an option, which may increase its
return if the option expires or is closed out at a profit. If a Fund as the
writer of an option is unable to close out an unexpired option, it must
continue to hold the underlying security or other asset until the option
expires, to "cover" its obligation under the option.      
     
  A futures contract creates an obligation by the seller to deliver and the
buyer to take delivery of the type of instrument or cash at the time and in
the amount specified in the contract. Although many futures contracts call for
the delivery (or acceptance) of the specified instrument, futures are usually
closed out before the settlement date through the purchase (or sale) of a
comparable contract. If the price of the sale of the futures contract by a
Fund exceeds (or is less than) the price of the offsetting purchase, the Fund
will realize a gain (or loss). The value of options purchased or written by a
Fund and futures contracts held by a Fund may fluctuate based on a variety of
market and economic factors. In some cases, the fluctuations may offset (or be
offset by) changes in the value of securities held in a Fund's portfolio. All
transactions in options and futures involve the possible risk of loss to a
Fund of all or a significant part of the value of its investment. In some
cases, the risk of loss may exceed the amount of the Fund's investment. When a
Fund writes a call option or sells a futures contract without holding the
underlying securities, currencies or futures contracts, its potential loss is
unlimited. A Fund will be required, however, to set aside with its custodian
bank liquid assets in amounts sufficient at all times to satisfy its
obligations under options and futures contracts.      
 
  The successful use of options and futures will usually depend on Loomis
Sayles' ability to forecast stock market, currency or other financial market
movements correctly. A Fund's ability to hedge against adverse changes in the
value of securities held in its portfolio through options and futures also
depends on the degree of correlation between the changes in the value of
futures or options positions and changes in the values of the portfolio
securities. The successful use of futures and exchange traded options also
depends on the availability of a liquid secondary market to enable a Fund to
close its positions
 
                                      18
<PAGE>
 
on a timely basis. There can be no assurance that such a market will exist at
any particular time. In the case of options that are not traded on an exchange
("over-the-counter" options), a Fund is at risk that the other party to the
transaction will default on its obligations, or will not permit the Fund to
terminate the transaction before its scheduled maturity. As a result of these
characteristics, each Fund will treat most over-the-counter options (and the
assets it segregates to cover its obligations thereunder) as illiquid.
 
  The options and futures markets of foreign countries are small compared to
those of the United States and consequently are characterized in most cases by
less liquidity than are the U.S. markets. In addition, foreign markets may be
subject to less detailed reporting requirements and regulatory controls than
U.S. markets. Furthermore, investments in options in foreign markets are
subject to many of the same risks as other foreign investments. See "Foreign
Securities" above.
 
SECURITIES LENDING
 
  The Mid-Cap Growth, Mid-Cap Value, Small Cap Growth and Strategic Value
funds may each lend its portfolio securities to broker-dealers or other
parties under contracts calling for the deposit by the borrower with the
Fund's custodian of cash collateral equal to at least the market value of the
securities loaned, marked to market on a daily basis. The Fund will continue
to benefit from interest or dividends on the securities loaned and will also
receive interest through investment of the cash collateral in short-term
liquid investments. No loans will be made if, as a result, the aggregate
amount of such loans outstanding at any time would exceed 33 1/3% of the
Fund's total assets (taken at current value). Any voting rights, or rights to
consent, relating to securities loaned pass to the borrower. However, if a
material event affecting the investment occurs, such loans will be called so
that the securities may be voted by the Fund. The Fund pays various fees in
connection with such loans, including shipping fees and reasonable custodial
or placement fees.
 
  Securities loans must be fully collateralized at all times, but involve some
credit risk to the Fund if the borrower defaults on its obligation and the
Fund is delayed or prevented from recovering the collateral.
 
                         THE FUNDS' INVESTMENT ADVISER
 
  The Funds' investment adviser is Loomis Sayles, One Financial Center,
Boston, Massachusetts 02111. Founded in 1926, Loomis Sayles is one of the
country's oldest and largest investment firms. Loomis Sayles' general partner
is indirectly owned by New England Investment Companies, L.P., a publicly-
traded limited partnership whose general partner is indirectly owned by
Metropolitan Life Insurance Company.
 
                                      19
<PAGE>

     
  In addition to selecting and reviewing the Funds' investments, Loomis Sayles
provides executive and other personnel for the management of the Funds. The
Trust's board of trustees supervises Loomis Sayles' conduct of the affairs of
the Funds.      
     
  As of March 3, 1997, the Loomis Sayles Employees' Profit Sharing Plan owned
26%, 91%, 35%, 56% and 99% of the Growth Fund, Mid-Cap Growth Fund, Mid-Cap
Value Fund, Small Cap Growth Fund, and Strategic Value Fund, respectively. As
of March 3, 1997, the Loomis-Sayles Funded Pension Plan owned 60% of the
Worldwide Fund. Each of these shareholders may be deemed to control the
relevant Fund.      
     
  Jeffrey W. Wardlow, Vice President of the Trust and of Loomis Sayles, has
served as the portfolio manager of the Core Value Fund since its commencement
of operations in 1991. Jerome A. Castellini, Vice President of the Trust and
of Loomis Sayles, has served as the portfolio manager of the Growth Fund since
its commencement of operations in 1991 and as a portfolio manager of the Mid-
Cap Growth Fund since its commencement of operations in 1997. Scott S. Pape,
Vice President of the Trust and of Loomis Sayles, has served as a portfolio
manager of the Mid-Cap Growth Fund since its commencement of operations in
1997. Jeffrey C. Petherick and Gregg D. Watkins, Vice Presidents of the Trust
and Loomis Sayles, have served as portfolio managers of the Mid-Cap Value Fund
since its commencement of operations in 1997. Christopher R. Ely, Vice
President of the Trust and of Loomis Sayles, has served as the portfolio
manager, and Philip C. Fine and David L. Smith, Vice Presidents of the Trust
and of Loomis Sayles, have served as assistant portfolio managers of the Small
Cap Growth Fund since its commencement of operations in 1997. Jeffrey C.
Petherick, Vice President of the Trust and of Loomis Sayles, has served as a
portfolio manager of the Small Cap Value Fund since its commencement of
operations in 1991, and Mary C. Champagne, Vice President of the Trust and of
Loomis Sayles, has served as a portfolio manager of the Small Cap Value Fund
since 1995. Philip J. Schettewi, Vice President of the Trust and Loomis
Sayles, has served as the portfolio manager of the Strategic Value Fund since
its commencement of operations in 1997. Daniel J. Fuss, President of the Trust
and Executive Vice President of Loomis Sayles, has served as the portfolio
manager of the domestic bonds sector of the Worldwide Fund since that Fund's
commencement of operations in 1996. E. John deBeer, Vice President of the
Trust and of Loomis Sayles, has served as portfolio manager of the
international bonds sector of the Worldwide Fund since that Fund's
commencement of operations in 1996. Quentin P. Faulkner, Vice President of the
Trust and of Loomis Sayles, has served as the portfolio manager of the
domestic equities sector of the Worldwide Fund since that Fund's commencement
of operations in 1996. Paul H. Drexler, Vice President of the Trust and of
Loomis Sayles, has served as the portfolio manager of the international
equities sector of the      
 
                                      20
<PAGE>

     
Worldwide Fund since that Fund's commencement of operations in 1996 and of the
International Equity Fund since 1996. Each of the foregoing, except Ms.
Champagne and Messrs. Drexler, Ely, Fine and Smith, has been employed by
Loomis Sayles for at least five years. Before joining Loomis Sayles in 1993,
Ms. Champagne was a portfolio manager at NBD Bank, and Mr. Drexler was an
economist and portfolio manager at Brown Brothers Harriman & Co. Prior to
joining Loomis Sayles in 1996, Mr. Ely was Senior Vice President and Portfolio
Manager, and Messrs. Fine and Smith were Vice Presidents and Portfolio
Managers, of Keystone Investment Management Company, Inc.      
 
                                      21
<PAGE>
 
                                 FUND EXPENSES
 
  Each Fund pays Loomis Sayles a monthly investment advisory fee at the
following annual percentage rate of the Fund's average daily net assets:
 
<TABLE>     
<CAPTION>
   FUND                                                                     RATE
   ----                                                                     ----
   <S>                                                                      <C>
   Core Value.............................................................. .50%
   Growth.................................................................. .50%
   International Equity.................................................... .75%
   Mid-Cap Growth.......................................................... .75%
   Mid-Cap Value........................................................... .75%
   Small Cap Growth........................................................ .75%
   Small Cap Value......................................................... .75%
   Strategic Value......................................................... .50%
   Worldwide............................................................... .75%
</TABLE>      
 
  In addition to the investment advisory fee, each Fund pays all expenses not
expressly assumed by Loomis Sayles, including taxes, brokerage commissions,
fees and expenses of registering or qualifying the Fund's shares under federal
and state securities laws, fees of the Fund's custodian, transfer agent,
independent accountants and legal counsel, expenses of shareholders' and
trustees' meetings, 12b-1 fees, expenses of preparing, printing and mailing
prospectuses to existing shareholders and fees of trustees who are not
directors, officers or employees of Loomis Sayles and its affiliated
companies.
 
  Under a Distribution Plan adopted pursuant to Rule 12b-1 under the
Investment Company Act of 1940, each of the Funds pays the Distributor, a
subsidiary of Loomis Sayles, a monthly distribution fee at an annual rate not
to exceed 0.25% of the Fund's average net assets attributable to the Retail
Class shares. The Distributor may pay all or any portion of the Distribution
Fee to securities dealers or other organizations (including, but not limited
to, any affiliate of the Distributor) as commissions, asset-based sales
charges or other compensation with respect to the sale of Retail Class shares
of the Funds, or for providing personal services to investors in Retail Class
shares of the Funds and/or the maintenance of accounts, and may retain all or
any portion of the Distribution Fee as compensation for the Distributor's
services as principal underwriter of the Retail Class shares of the Funds.
Loomis Sayles may pay certain broker-dealers or financial intermediaries whose
customers are shareholders of the Funds a continuing fee at an annual rate of
up to .25% of the value of Fund shares held for those customers' accounts.
These fees are paid by Loomis Sayles out of its own assets and are not
assessed against the Funds.
 
  Loomis Sayles has voluntarily agreed, for an indefinite period, to reduce
its advisory fees and/or bear other Fund expenses to the extent necessary to
limit
 
                                      22
<PAGE>
 
total operating expenses of the Retail Class of shares of each Fund to the
following annual percentage rate of the Fund's average net assets:
 
<TABLE>     
<CAPTION>
   FUND                                                                    RATE
   ----                                                                    -----
   <S>                                                                     <C>
   Core Value............................................................. 1.10%
   Growth................................................................. 1.10%
   International Equity................................................... 1.25%
   Mid-Cap Growth......................................................... 1.25%
   Mid-Cap Value.......................................................... 1.25%
   Small Cap Growth....................................................... 1.25%
   Small Cap Value........................................................ 1.25%
   Strategic Value........................................................ 1.25%
   Worldwide.............................................................. 1.25%
</TABLE>      
 
  Loomis Sayles may change or terminate these voluntary arrangements at any
time, but the Funds' Prospectus would be supplemented to describe the change.
 
                            PORTFOLIO TRANSACTIONS
    
  Portfolio turnover considerations will not limit Loomis Sayles' investment
discretion in managing the Funds' assets. The Funds anticipate that their
portfolio turnover rates will vary significantly from time to time depending
on the volatility of economic and market conditions. High portfolio turnover
may involve higher transaction costs and higher levels of taxable gains.
Although it is not possible to predict portfolio turnover rates with
certainty, Loomis Sayles does not expect the Mid-Cap Growth, Mid-Cap Value,
Small Cap Growth and Strategic Value Funds' portfolio turnover rates to exceed
200%, 70%, 150%, and 70%, respectively. A portfolio turnover rate in excess of
100% may be considered high.      
 
                            HOW TO PURCHASE SHARES
 
  An investor may make an initial purchase of shares of any Fund by submitting
a completed application form and payment to:
 
     Boston Financial Data Services
     P.O. Box 8314
     Boston, Massachusetts 02266-8314
     Attn: Loomis Sayles Funds
     
  The minimum initial investment for the Retail Class of each Fund's shares is
$250,000 in that Fund. This minimum initial investment does not apply to      
 
                                      23
<PAGE>

     
purchases through certain financial intermediaries including, but not limited
to, certain financial advisers, broker dealers, 401(k) alliances, wrap
programs, "no transaction fee" programs, bank trust departments, financial
consultants and insurance companies. The minimum investment may be waived by
Loomis Sayles in its sole discretion and will be waived for any new
shareholder who invests less than $250,000 but signs a letter of intent
stating the shareholder's intention to bring his or her balance to $250,000
within six months of the initial purchase. Loomis Sayles reserves the right to
redeem, at net asset value, the accounts of shareholders that have signed a
letter of intent but fail to meet the minimum investment within the specified
time. Subsequent investments must be at least $50.      
     
  Shares of any Fund may be purchased by (i) cash, (ii) exchanging Retail
Class shares of any Fund (or any other series of Loomis Sayles Funds),
(iii) exchanging securities on deposit with a custodian acceptable to Loomis
Sayles or (iv) a combination of such securities and cash. Purchase of shares
of a Fund in exchange for securities is subject in each case to the
determination by Loomis Sayles that the securities to be exchanged are
acceptable for purchase by the Fund. In all cases Loomis Sayles reserves the
right to reject any securities that are proposed for exchange. Securities
accepted by Loomis Sayles in exchange for Fund shares will be valued in the
same manner as the Fund's assets, as described below, as of the time of the
Fund's next determination of net asset value after such acceptance. All
dividends and subscription or other rights which are reflected in the market
price of accepted securities at the time of valuation become the property of
the Fund and must be delivered to the Fund upon receipt by the investor from
the issuer. A gain or loss for federal income tax purposes would be realized
upon the exchange by an investor that is subject to federal income taxation,
depending upon the investor's basis in the securities tendered. An investor
who wishes to purchase shares by exchanging securities should obtain
instructions by calling 800-633-3330 and asking for the Loomis Sayles Funds
Shareholder Services Group.      
 
  Loomis Sayles will not approve the acceptance of securities in exchange for
shares of any Fund unless (1) Loomis Sayles, in its sole discretion, believes
the securities are appropriate investments for the Fund; (2) the investor
represents and agrees that all securities offered to the Fund can be resold by
the Fund without restriction under the Securities Act of 1933, as amended (the
"Securities Act") or otherwise; and (3) the securities are eligible to be
acquired under the Fund's investment policies and restrictions. No investor
owning 5% or more of a Fund's shares may purchase additional shares of that
Fund by exchange of securities.
     
  All purchases made by check should be in U.S. dollars and made payable to
State Street Bank and Trust Company ("State Street Bank"). Third party      
 
                                      24
<PAGE>

     
checks will not be accepted. When purchases are made by check or periodic
account investment, redemption will not be allowed until the investment being
redeemed has been in the account for 15 calendar days.      
 
  Upon acceptance of an investor's order, Boston Financial Data Services, Inc.
("BFDS"), the shareholder servicing agent for State Street Bank, opens an
account, applies the payment to the purchase of full and fractional Fund
shares and mails a statement of the account confirming the transaction.
 
  After an account has been established, an investor may send subsequent
investments at any time directly to BFDS at the above address. The remittance
must be accompanied by either the account identification slip detached from a
statement of account or a note containing sufficient information to identify
the account, i.e., the Fund name and the investor's account number or name and
social security number.
 
  Subsequent investments can also be made by federal funds wire. Investors
should instruct their banks to wire federal funds to State Street Bank and
Trust Company, ABA #011000028. The text of the wire should read as follows: "$
amount, STATE STREET BOS ATTN Mutual Funds. Credit Fund (Fund Name and Retail
Class), DDA #9904-622-9, Shareholder Name, Shareholder Account Number." A bank
may charge a fee for transmitting funds by wire.
 
  Each Fund and the Distributor reserve the right to reject any purchase
order, including orders in connection with exchanges, for any reason which the
Fund or the Distributor in its sole discretion deems appropriate. Although the
Funds do not presently anticipate that they will do so, each Fund reserves the
right to suspend or change the terms of the offering of its shares.
 
  The price an investor pays will be the per share net asset value next
calculated after a proper investment order is received by the Trust's transfer
or other agent or subagent. Shares of each Fund are sold with no sales charge.
The net asset value of each Fund's shares is calculated once daily as of the
close of regular trading on the New York Stock Exchange on each day the
Exchange is open for trading, by dividing the Fund's net assets by the number
of shares outstanding. Portfolio securities are valued at their market value
as more fully described in the Statement of Additional Information.
 
  The Distributor may accept telephone orders from broker-dealers who have
been previously approved by the Distributor. It is the responsibility of such
broker-dealers to promptly forward purchase or redemption orders to the
Distributor. Although there is no sales charge imposed by the Fund or the
Distributor, broker-dealers may charge the investor a transaction-based fee or
other fee for their services at either the time of purchase or the time of
 
                                      25
<PAGE>
 
redemption. Such charges may vary among broker-dealers but in all cases will
be retained by the broker-dealer and not remitted to the Fund.
     
  Each Fund also offers an Institutional Class of shares that has a $1 million
minimum investment for certain categories of investors and bears lower
expenses. Because of its lower expenses, the Institutional Class of shares of
each Fund is expected to have a higher total return than the Retail Class of
shares.      
 
                             SHAREHOLDER SERVICES
 
  The Funds offer the following shareholder services, which are more fully
described in the Statement of Additional Information. Explanations and forms
are available from BFDS. Telephone redemption and exchange privileges will be
established automatically when an investor opens an account unless an investor
elects on the application to decline the privileges. Other privileges must be
specifically elected. A signature guarantee will be required to establish a
privilege after an account is opened.
 
  FREE EXCHANGE PRIVILEGE. Retail Class shares of any Fund may be exchanged
for Retail Class shares of any other Fund (or any other fund that is a series
of Loomis Sayles Funds and that offers Retail Class shares) or for shares of
certain money market funds advised by New England Funds Management, L.P., an
affiliate of Loomis Sayles. Exchanges may be made by written instructions or
by telephone, unless an investor elected on the application to decline
telephone exchange privileges. The exchange privilege should not be viewed as
a means for taking advantage of short-term swings in the market, and the Funds
reserve the right to terminate or limit the privilege of any shareholder who
makes more than four exchanges in any calendar year. The Funds may terminate
or change the terms of the exchange privilege at any time, upon 60 days'
notice to shareholders.
 
  RETIREMENT PLANS. The Funds' Retail Class shares may be purchased by all
types of tax-deferred retirement plans. Loomis Sayles makes available
retirement plan forms for IRAs.
 
  SYSTEMATIC WITHDRAWAL PLANS. If the value of an account is at least $25,000,
an investor may have periodic cash withdrawals automatically paid to the
investor or any person designated by the investor.
 
  AUTOMATIC INVESTMENT PLAN. Voluntary monthly investments of at least $50 may
be made automatically by pre-authorized withdrawals from an investor's
checking account.
 
                                      26
<PAGE>
 
                             HOW TO REDEEM SHARES
 
  An investor can redeem shares by sending a written request to Boston
Financial Data Services, Inc., P.O. Box 8314, Boston, Massachusetts 02266. As
described below, an investor may also redeem shares by calling BFDS at 800-
626-9390. Proceeds resulting from a written or telephone redemption request
can be wired to an investor's bank account or sent by check in the name of the
registered owners to their record address.
 
  The written request must include the name of the Fund, the account number,
the exact name(s) in which the shares are registered, and the number of shares
or the dollar amount to be redeemed. All owners of the shares must sign the
request in the exact names in which the shares are registered (this appears on
an investor's confirmation statement) and should indicate any special capacity
in which they are signing (such as trustee or custodian or on behalf of a
partnership, corporation or other entity). Investors requesting that
redemption proceeds be wired to their bank accounts must provide specific wire
instructions.
 
  If (1) an investor is redeeming shares worth more than $50,000, (2) an
investor is requesting that the proceeds check be made out to someone other
than the registered owners or be sent to an address other than the record
address, (3) the account registration has changed within the last 30 days or
(4) an investor is instructing us to wire the proceeds to a bank account not
designated on the application, the investor must have his or her signature
guaranteed by an eligible guarantor. Eligible guarantors include commercial
banks, trust companies, savings associations, credit unions and brokerage
firms that are members of domestic securities exchanges. Before submitting the
redemption request, the investor should verify with the guarantor institution
that it is an eligible guarantor. Signature guarantees by notaries public are
not acceptable.
 
  If an investor has requested certificates for the investment, the investor
must enclose the certificates and a properly completed redemption form or
stock power. The Funds recommend that certificates be sent by registered mail.
 
  When an investor telephones a redemption request, the proceeds are wired to
the bank account previously chosen by the investor. A wire fee (currently $5)
will be deducted from the proceeds. A telephonic redemption request must be
received by BFDS prior to the close of regular trading on the New York Stock
Exchange. If an investor telephones a request to BFDS after the Exchange
closes or on a day when the Exchange is not open for business, BFDS cannot
accept the request and a new one will be necessary.
 
  If an investor decides to change the bank account to which proceeds are to
be wired, the investor must send in this change on the Service Options Form
with a signature guarantee. Telephonic redemptions may only be made if the
 
                                      27
<PAGE>
 
investor's bank is a member of the Federal Reserve System or has a
correspondent bank that is a member of the System. Unless the investor
indicates otherwise on the account application, BFDS will be authorized to act
upon redemption and exchange instructions received by telephone from the
investor or any person claiming to act as the investor's representative who
can provide BFDS with the investor's account registration and address as it
appears on the records of State Street Bank. BFDS will employ these or other
reasonable procedures to confirm that instructions communicated by telephone
are genuine; the Fund, State Street Bank, BFDS, the Distributor and Loomis
Sayles will not be liable for any losses due to unauthorized or fraudulent
instructions if these or other reasonable procedures are followed. For
information, consult BFDS. In times of heavy market activity, an investor who
encounters difficulty in placing a redemption or exchange order by telephone
may wish to place the order by mail as described above.
 
  The redemption price will be the net asset value per share next determined
after the redemption request and any necessary special documentation are
received by BFDS in proper form.
 
  Proceeds resulting from a written redemption request will normally be mailed
to an investor within seven days after receipt of the investor's request in
good order. Telephonic redemption proceeds will normally be wired to an
investor's bank on the first business day following receipt of a proper
redemption request. If an investor purchased shares by check and the check was
deposited less than fifteen days prior to the redemption request, the Fund may
withhold redemption proceeds until the check has cleared.
 
  The Fund may suspend the right of redemption and may postpone payment for
more than seven days when the New York Stock Exchange is closed for other than
weekends or holidays, or if permitted by the rules of the SEC when trading on
the Exchange is restricted or during an emergency which makes it impracticable
for the Fund to dispose of its securities or to determine fairly the value of
its net assets, or during any other period permitted by the SEC for the
protection of investors.
 
                    CALCULATION OF PERFORMANCE INFORMATION
     
  "Total return" for the one-, five- and ten-year periods (or for the life of
the class, if shorter) through the most recent calendar quarter represents the
average annual compounded rate of return on an investment of $1,000 in a Fund.
Total return may also be presented for other periods.      
 
                                      28
<PAGE>
 
                DIVIDENDS, CAPITAL GAIN DISTRIBUTIONS AND TAXES
 
  The Funds declare and pay their net investment income to shareholders as
dividends annually. Each Fund also distributes all of its net capital gains
realized from the sale of portfolio securities. Any capital gain distributions
are normally made annually, but may, to the extent permitted by law, be made
more frequently as deemed advisable by the trustees of the Trust. The Trust's
trustees may change the frequency with which the Funds declare or pay
dividends.
 
  Dividends and capital gain distributions will automatically be reinvested in
additional shares of the same Fund on the record date unless an investor has
elected to receive cash. Each Fund intends to qualify as a regulated
investment company under the Internal Revenue Code of 1986, as amended. As
such, so long as a Fund distributes substantially all its net investment
income and net capital gains to its shareholders, the Fund itself does not pay
any federal income tax to the extent such income and gains are so distributed.
Income dividends and short term capital gain distributions are taxable as
ordinary income whether distributed in cash or additional shares. Long-term
capital gain distributions from all Funds are taxable as long-term capital
gains whether distributed in cash or additional shares and regardless of how
long an investor has owned shares of a Fund.
 
  Each Fund is required to withhold 31% of any redemption proceeds (including
the value of shares exchanged) and all income dividends and capital gain
distributions it pays to an investor (1) if an investor does not provide a
correct, certified taxpayer identification number, (2) if the Fund is notified
that an investor has underreported income in the past, or (3) if an investor
fails to certify to the Fund that the investor is not subject to such
withholding.
 
  Certain designated dividends from the Funds are expected to be eligible for
the dividends-received deduction for corporate shareholders.
 
  State Street Bank will send each investor and the IRS an annual statement
detailing federal tax information, including information about dividends and
distributions paid to the investor during the preceding year. Be sure to keep
this statement as a permanent record. A fee may be charged for any duplicate
information that an investor requests.
 
NOTE:   The foregoing summarizes certain tax consequences of investing in the
        Funds. Before investing, an investor should consult his or her own tax
        adviser for more information concerning the federal, state and local
        tax consequences of investing in, redeeming or exchanging Fund shares.
 
                                      29
<PAGE>
 
 
INVESTMENT ADVISER
Loomis, Sayles & Company, L.P.
One Financial Center
Boston, Massachusetts 02111
 
DISTRIBUTOR
Loomis Sayles Distributors, L.P.
One Financial Center
Boston, Massachusetts 02111
 
TRANSFER AND DIVIDEND PAYING AGENT
AND CUSTODIAN OF ASSETS
State Street Bank and Trust Company
Boston, Massachusetts 02102
 
SHAREHOLDER SERVICING AGENT FOR
STATE STREET BANK AND TRUST COMPANY
Boston Financial Data Services, Inc.
P.O. Box 8314
Boston, Massachusetts 02266
 
LEGAL COUNSEL
Ropes & Gray
One International Place
Boston, Massachusetts 02110
 
INDEPENDENT ACCOUNTANTS
Coopers & Lybrand L.L.P.
One Post Office Square
Boston, Massachusetts 02109
 
<PAGE>
 
                           -----------------------
                           LOOMIS SAYLES FUNDS (TM)
                           =======================

                                     The Power of A Passion.(TM) 
 
      FIXED INCOME FUNDS RETAIL CLASS
 
  
      PROSPECTUS
         
      APRIL 1, 1997     
<PAGE>
 
                           ----------------------- 
                           LOOMIS SAYLES FUNDS (TM)
                           =======================

                                     The Power of A Passion.(TM)


 One Financial Center . Boston, Massachusetts 02111 . (617) 482-2450
 
THE LOOMIS SAYLES FUNDS--FIXED INCOME FUNDS
 
 RETAIL CLASS SHARES OF:
 
   LOOMIS SAYLES BOND FUND
   LOOMIS SAYLES GLOBAL BOND FUND
   LOOMIS SAYLES HIGH YIELD FUND
   LOOMIS SAYLES INTERMEDIATE MATURITY BOND FUND
   LOOMIS SAYLES INVESTMENT GRADE BOND FUND
   LOOMIS SAYLES SHORT-TERM BOND FUND
<PAGE>
                                                                       
PROSPECTUS                                                        APRIL 1, 1997
                                                                                
THE LOOMIS SAYLES FUNDS--FIXED INCOME FUNDS
 
  Loomis Sayles Bond Fund, Loomis Sayles Global Bond Fund, Loomis Sayles High
Yield Fund, Loomis Sayles Intermediate Maturity Bond Fund, Loomis Sayles In-
vestment Grade Bond Fund and Loomis Sayles Short-Term Bond Fund (the "Funds"
and each a "Fund"), each a series of Loomis Sayles Funds, are separately man-
aged, no-load mutual funds, each of which has its own investment objective and
policies. Loomis, Sayles & Company, L.P. ("Loomis Sayles") is the investment
adviser of each Fund.
     
  The Funds offer two classes of shares: a Retail Class that is described in
this Prospectus, and an Institutional Class, with a higher investment minimum
for certain categories of investors and bearing lower expenses, that is de-
scribed in a separate prospectus. This Prospectus concisely describes the in-
formation that an investor should know before investing in the Retail Class
shares of any Fund. Please read it carefully and keep it for future reference.
A Statement of Additional Information dated April 1, 1997 is available free of
charge; write to Loomis Sayles Distributors, L.P. (the "Distributor"), One Fi-
nancial Center, Boston, Massachusetts 02111 or telephone 800-633-3330. The
Statement of Additional Information, which contains more detailed information
about the Funds, has been filed with the Securities and Exchange Commission
(the "SEC") and is incorporated by reference into this Prospectus. To obtain
more information about the Institutional Class of shares, please call the Dis-
tributor toll-free at 800-633-3330 or contact your financial intermediary.     
 
  For information about:                    For all other information about
   . Establishing an account                the Funds:
   . Account procedures and status          CALL 800-633-3330
   . Exchanges
   . Shareholder services
  CALL 800-626-9390
 
THESE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE SECURITIES AND
EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION NOR HAS THE SECURITIES
AND EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION PASSED UPON THE
ACCURACY OR ADEQUACY OF THIS PROSPECTUS. ANY REPRESENTATION TO THE CONTRARY IS
A CRIMINAL OFFENSE.
 
  THE LOOMIS SAYLES HIGH YIELD FUND WILL NORMALLY INVEST AT LEAST 65% OF ITS
ASSETS IN LOWER-RATED SECURITIES, COMMONLY KNOWN AS "JUNK BONDS" AND MAY
INVEST SUBSTANTIALLY ALL OF ITS ASSETS IN SUCH SECURITIES. INVESTMENTS OF THIS
TYPE ARE SUBJECT TO A GREATER RISK OF LOSS OF PRINCIPAL AND NON-PAYMENT OF
INTEREST. INVESTORS SHOULD ASSESS CAREFULLY THE RISKS ASSOCIATED WITH AN
INVESTMENT IN THE HIGH YIELD FUND. SEE "MORE INFORMATION ABOUT THE FUNDS'
INVESTMENTS AND RISK CONSIDERATIONS--LOWER RATED FIXED INCOME SECURITIES" AND
"APPENDIX A."
 
                                       1
<PAGE>
 
                               TABLE OF CONTENTS
 
<TABLE>    
<CAPTION>
                                                                           PAGE
                                                                           ----
<S>                                                                        <C>
SUMMARY OF EXPENSES.......................................................   3
FINANCIAL HIGHLIGHTS......................................................   5
THE TRUST.................................................................   9
INVESTMENT OBJECTIVES AND POLICIES........................................   9
MORE INFORMATION ABOUT THE FUNDS' INVESTMENTS AND RISK CONSIDERATIONS.....  12
THE FUNDS' INVESTMENT ADVISER.............................................  21
FUND EXPENSES.............................................................  23
PORTFOLIO TRANSACTIONS....................................................  24
HOW TO PURCHASE SHARES....................................................  24
SHAREHOLDER SERVICES......................................................  26
HOW TO REDEEM SHARES......................................................  27
CALCULATION OF PERFORMANCE INFORMATION....................................  29
DIVIDENDS, CAPITAL GAIN DISTRIBUTIONS AND TAXES...........................  30
APPENDIX A
  DESCRIPTION OF BOND RATINGS.............................................  32
</TABLE>     
 
                                       2
<PAGE>
 
                              SUMMARY OF EXPENSES
     
  The following information is provided as an aid in understanding the various
expenses that an investor in a Fund will bear indirectly. The information
about each Fund shown below is based on projected expenses of the Retail Class
shares for the 1997 fiscal year. The information below should not be
considered a representation of past or future expenses, as actual expenses may
be greater or less than those shown. Also, the 5% annual return assumed in the
Example should not be considered a representation of investment performance,
as actual performance will vary.     
 
INTERMEDIATE
 
<TABLE>    
<CAPTION>
                                      BOND    GLOBAL     HIGH YIELD  MATURITY
                                     FUND/2/ BOND FUND      FUND     BOND FUND
                                     ------- ---------   ----------  ---------
<S>                                  <C>     <C>         <C>         <C>
Shareholder Transaction Expenses:
 Maximum Sales Load Imposed on
   Purchases (as % of offering
   price)...........................  none     none         none       none
 Maximum Sales Load Imposed on
   Reinvested Dividends (as % of
   offering price)..................  none     none         none       none
 Maximum Deferred Sales Load (as %
   of original purchase price or
   redemption proceeds).............  none     none         none       none
 Redemption Fees/1/.................  none     none         2.00%      none
 Exchange Fees......................  none     none         none       none
Annual Operating Expenses
  (as a percentage of net assets):
 Management Fees....................   .60%     .60%         .60%       .40%
 12b-1 Fees.........................   .25%     .25%         .25%       .25%
 Other Operating Expenses (after
   expense reimbursements where
   indicated).......................   .15%     .30%/2/      .15%/2/    .15%/2/
 Total Operating Expenses (after
   expense reimbursements where
   indicated).......................  1.00%    1.15%/2/     1.00%/2/    .80%/2/
Example:
An investor would pay the following
  expenses on a $1,000 investment
  assuming a 5% annual return (with
  a redemption at the end of each
  time period):
 One Year...........................   $10      $12          $30        $ 8
 Three Years........................   $32      $37          $32        $26
An investor would pay the following
  expenses on a $1,000 investment
  assuming a 5% annual return
  (without a redemption at the end
  of each time period):
 One Year...........................   $10      $12          $10        $ 8
 Three Years........................   $32      $37          $32        $26
</TABLE>     
 
                                       3
<PAGE>
 
<TABLE>    
<CAPTION>
                                                       INVESTMENT
                                                         GRADE     SHORT-TERM
                                                       BOND FUND   BOND FUND
                                                       ----------  ----------
<S>                                                    <C>         <C>
Shareholder Transaction Expenses:
 Maximum Sales Load Imposed on Purchases (as % of
  offering price).....................................    none        none
 Maximum Sales Load Imposed on Reinvested Dividends
  (as % of offering price)............................    none        none
 Maximum Deferred Sales Load (as % of original
  purchase price or redemption proceeds)..............    none        none
 Redemption Fees/1/...................................    none        none
 Exchange Fees........................................    none        none
Annual Operating Expenses (as a percentage of net
  assets):
 Management Fees......................................     .40%        .25%
 12b-1 Fees...........................................     .25%        .25%
 Other Operating Expenses (after expense
  reimbursements where indicated).....................     .15%/2/     .25%/2/
 Total Operating Expenses (after expense
  reimbursements where indicated).....................     .80%/2/     .75%/2/
Example:
An investor would pay the following expenses on a
 $1,000 investment assuming a 5% annual return (with
 or
 without a redemption at the end of each time period):
 One Year.............................................     $ 8         $ 8
 Three Years..........................................     $26         $24
</TABLE>     
- -----------
/1/  A $5 charge applies to any wire transfer of redemption proceeds from any
     Fund. A 2.00% redemption fee applies with respect to shares of the High
     Yield Fund redeemed within one (1) year of purchase. Loomis Sayles may, in
     its discretion, waive redemption fees on shares of the High Yield Fund as
     set forth under the heading "How to Redeem Shares" if it determines that
     there are minimal brokerage and transaction costs incurred in connection
     with the redemption.
    
/2/  Other Operating Expenses are based on estimated expenses for the Funds for
     the 1997 fiscal year after giving effect to expense reimbursements. None of
     the Funds had commenced investment operations with respect to Retail Class
     shares as of December 31, 1996. Loomis Sayles has voluntarily agreed, for
     an indefinite period, to limit the Total Operating Expenses of the Bond
     Fund to 1.00% of average net assets and to limit the other Funds' Total
     Operating Expenses to the percentages of net assets shown in the table.
     Without this agreement, estimated Other Operating Expenses and Total
     Operating Expenses would be 1.02% and 1.87%, respectively, for the Global
     Bond Fund, 1.34% and 2.19%, respectively, for the High Yield Fund, 1.47%
     and 2.12%, respectively, for the Intermediate Maturity Bond Fund, 1.47% and
     2.12%, respectively, for the Investment Grade Bond Fund and 0.67% and
     1.17%, respectively, for the Short-Term Bond Fund.      
 
                                       4
<PAGE>
 
                             FINANCIAL HIGHLIGHTS
 
           (FOR AN INSTITUTIONAL CLASS SHARE OF EACH INDICATED FUND
                 OUTSTANDING THROUGHOUT THE INDICATED PERIODS)
 
    
  The following information is included in financial statements of the Funds
that have been audited by Coopers & Lybrand L.L.P., independent accountants.
The information should be read in conjunction with the financial statements
and the notes thereto contained in the Funds' 1996 Annual Report, which is
incorporated by reference in this Prospectus and the Statement of Additional
Information. None of the Funds had commenced investment operations with
respect to Retail Class shares, and the Intermediate Maturity Bond and
Investment Grade Bond Funds had not commenced investment operations with
respect to Institutional Class shares, as of December 31, 1996. The
information shown below is for Institutional Class shares of each indicated
Fund; Retail Class shares bear higher expenses than Institutional Class
shares, and are expected to have a lower total return than Institutional Class
shares.      
 
<TABLE>    
<CAPTION>
                                                BOND FUND
                            -------------------------------------------------------
                                                                           MAY 16*
                                       YEAR ENDED DEC. 31,                    TO
                            ---------------------------------------------  DEC. 31,
                              1996      1995     1994     1993     1992      1991
                            --------  --------  -------  -------  -------  --------
 <S>                        <C>       <C>       <C>      <C>      <C>      <C>
 Net asset value,
  beginning of period....   $  12.29  $  10.05  $ 11.37  $ 10.36  $ 10.23   $10.00
                            --------  --------  -------  -------  -------   ------
 Income from investment
  operations--
  Net investment income
  (loss).................       0.86      0.82     0.83     0.84     0.76     0.52
 Net realized and
  unrealized gain (loss)
  on investments.........       0.35      2.32    (1.29)    1.43     0.67     0.36
                            --------  --------  -------  -------  -------   ------
  Total from investment
   operations............       1.21      3.14    (0.46)    2.27     1.43     0.88
                            --------  --------  -------  -------  -------   ------
 Less distributions--
 Dividends from net
  investment income......      (0.86)    (0.82)   (0.84)   (0.81)   (0.76)   (0.52)
 Distributions in excess
  of net
  investment income......       0.00      0.00    (0.02)    0.00     0.00     0.00
 Distributions from net
  realized capital
  gains..................      (0.26)    (0.08)    0.00    (0.45)   (0.54)   (0.13)
                            --------  --------  -------  -------  -------   ------
  Total distributions....      (1.12)    (0.90)   (0.86)   (1.26)   (1.30)   (0.65)
                            --------  --------  -------  -------  -------   ------
 Net asset value, end of
  period.................   $  12.38  $  12.29  $ 10.05  $ 11.37  $ 10.36   $10.23
                            ========  ========  =======  =======  =======   ======
 Total return (%)........       10.3      32.0     (4.1)    22.2     14.3      8.9
 Net assets, end of
  period (000)...........   $541,244  $255,710  $82,985  $64,222  $18,472   $9,922
 Ratio of operating
  expenses to average net
  assets (%).............       0.75      0.79     0.84     0.94     1.00     1.00**
 Ratio of net investment
  income to average net
  assets (%).............       7.93      8.34     7.92     8.26     7.50     8.97**
 Portfolio turnover rate
  (%)....................         42        35       87      170      101      126**
 Without giving effect to
  voluntary expense
  limitations:
 The ratios of operating
  expenses to average net
  assets would have been
  (%)....................       0.75      0.79     0.84     0.94     1.55     1.78**
 Net investment income
  per share would
  have been..............   $   0.86  $   0.82  $  0.83  $  0.84  $  0.70   $ 0.47
</TABLE>     
- -----------
    
 * Commencement of investment operations.      
** Computed on an annualized basis.
 
                                       5
<PAGE>
 
<TABLE>    
<CAPTION>
                                           GLOBAL BOND FUND
                            ----------------------------------------------------
                                                                        MAY 10*
                                     YEAR ENDED DEC. 31,                   TO
                            ------------------------------------------  DEC. 31,
                             1996     1995     1994     1993     1992     1991
                            -------  -------  -------  -------  ------  --------
 <S>                        <C>      <C>      <C>      <C>      <C>     <C>
 Net asset value,
  beginning of period....   $ 11.39  $  9.82  $ 11.06  $ 10.32  $11.38   $10.00
                            -------  -------  -------  -------  ------   ------
 Income from investment
  operations--
 Net investment income
  (loss).................      0.44     1.04     0.67     0.54    0.70     0.37
 Net realized and
  unrealized gain (loss)
  on investments.........      1.27     1.31    (1.63)    0.96   (0.60)    1.31
                            -------  -------  -------  -------  ------   ------
  Total from investment
   operations............      1.71     2.35    (0.96)    1.50    0.10     1.68
                            -------  -------  -------  -------  ------   ------
 Less distributions--
 Dividends from net
  investment income......     (0.75)   (0.78)   (0.04)   (0.49)  (0.77)   (0.30)
 Distributions from net
  realized capital
  gains..................      0.00     0.00     0.00    (0.27)  (0.39)    0.00
 Distributions from
  capital................      0.00     0.00    (0.24)    0.00    0.00     0.00
                            -------  -------  -------  -------  ------   ------
  Total distributions....     (0.75)   (0.78)   (0.28)   (0.76)  (1.16)   (0.30)
                            -------  -------  -------  -------  ------   ------
 Net asset value, end of
  period.................   $ 12.35  $ 11.39  $  9.82  $ 11.06  $10.32   $11.38
                            =======  =======  =======  =======  ======   ======
 Total return (%)........      15.0     23.9     (8.7)    14.6     0.8     16.9
 Net assets, end of
  period (000)...........   $26,513  $10,304  $25,584  $21,378  $9,968   $4,308
 Ratio of operating
  expenses to average net
  assets (%).............      1.50     1.50     1.30     1.50    1.50     1.50**
 Ratio of net investment
  income to average net
  assets (%).............      6.37     8.17     7.02     5.54    6.99     6.81**
 Portfolio turnover rate
  (%)....................       131      148      153      150      72      137**
 Without giving effect to
  voluntary expense
  limitations:
 The ratios of operating
  expenses to average net
  assets would have been
  (%)....................      1.77     1.69     1.30     1.51    2.58     3.99**
 Net investment income
  per share would
  have been..............   $  0.42  $  1.02  $  0.67  $  0.54  $ 0.59   $ 0.23
</TABLE>     
- -----------
    
 * Commencement of investment operations.     
** Computed on an annualized basis.
 
                                       6
<PAGE>
 
<TABLE>    
<CAPTION>
                                                                HIGH YIELD FUND
                                                                ---------------
                                                                 SEPTEMBER 11*
                                                                      TO
                                                                   DEC. 31,
                                                                     1996
                                                                ---------------
 <S>                                                            <C>
 Net asset value, beginning of period........................       $10.00
                                                                    ------
 Income from investment operations--
 Net investment income (loss)................................         0.20
 Net realized and unrealized gain (loss) on investments......         0.11
                                                                    ------
  Total from investment operations...........................         0.31
                                                                    ------
 Less distributions--
 Dividends from net investment income........................        (0.20)
 Distributions from net realized capital gains...............         0.00
                                                                    ------
  Total distributions........................................        (0.20)
                                                                    ------
 Net asset value, end of period..............................       $10.11
                                                                    ======
 Total return (%)............................................          3.1
 Net assets, end of period (000).............................       $1,939
 Ratio of operating expenses to average net assets (%).......         0.75**
 Ratio of net investment income to average net assets (%)....         8.85**
 Portfolio turnover rate (%).................................            0**
 Without giving effect to voluntary expense limitations:
 The ratios of operating expenses to average net assets would
  have been (%)..............................................        12.06**
 Net investment income per share would have been.............       $(0.05)
</TABLE>     
- -----------
    
 * Commencement of investment operations.      
** Computed on an annualized basis.
 
                                       7
<PAGE>
 
<TABLE>    
<CAPTION>
                                           SHORT-TERM BOND FUND
                                 --------------------------------------------
                                                                     AUG. 3*
                                       YEAR ENDED DEC. 31,              TO
                                 ----------------------------------  DEC. 31,
                                  1996     1995     1994     1993      1992
                                 -------  -------  -------  -------  --------
 <S>                             <C>      <C>      <C>      <C>      <C>
 Net asset value, beginning of
  period.......................  $  9.81  $  9.46  $  9.95  $  9.87   $10.00
                                 -------  -------  -------  -------   ------
 Income from investment
  operations--
 Net investment income.........     0.55     0.63     0.66     0.59     0.22
 Net realized and unrealized
  gain (loss) on investments...    (0.11)    0.35    (0.49)    0.08    (0.13)
                                 -------  -------  -------  -------   ------
  Total from investment
   operations..................     0.44     0.98     0.17     0.67     0.09
                                 -------  -------  -------  -------   ------
 Less distributions--
 Dividends from net investment
  income.......................    (0.55)   (0.63)   (0.66)   (0.59)   (0.22)
 Distributions from net
  realized capital gains.......     0.00     0.00     0.00     0.00     0.00
                                 -------  -------  -------  -------   ------
  Total distributions..........   (0.55 )   (0.63)   (0.66)   (0.59)   (0.22)
                                 -------  -------  -------  -------   ------
 Net asset value, end of
  period.......................  $  9.70  $  9.81  $  9.46  $  9.95   $ 9.87
                                 =======  =======  =======  =======   ======
  Total return (%).............      4.7     10.6      1.8      7.0      0.9
 Net assets, end of period
  (000)........................  $18,229  $26,039  $19,440  $15,226   $5,121
 Ratio of operating expenses to
  average net assets (%).......     1.00     1.00     1.00     1.00     1.00**
 Ratio of net investment income
  to average net assets (%)....     5.69     6.46     6.88     5.97     5.49**
 Portfolio turnover rate (%)...      120      214       34       81       31**
 Without giving effect to
  voluntary expense
  limitations:
 The ratios of operating
  expenses to average net
  assets would have been (%)...     1.17     1.03     1.33     1.55     3.74**
 Net investment income per
  share would have been........  $  0.53  $  0.62  $  0.63  $  0.54   $ 0.11
</TABLE>     
- -----------
    
 * Commencement of investment operations.      
** Computed on an annualized basis.
     
NOTE: Further information about each Fund's performance is contained in the
      Funds' annual report to shareholders, which may be obtained without
      charge.      
 
                                       8
<PAGE>
 
                                   THE TRUST
 
  Each Fund is a series of Loomis Sayles Funds (the "Trust"). The Trust is a
diversified open-end management investment company organized as a
Massachusetts business trust on February 20, 1991. The Trust is authorized to
issue an unlimited number of full and fractional shares of beneficial interest
in multiple series. Shares are freely transferable and entitle shareholders to
receive dividends as determined by the Trust's board of trustees and to cast a
vote for each share held at shareholder meetings. The Trust does not generally
hold shareholder meetings and will do so only when required by law.
Shareholders may call meetings to consider removal of the Trust's trustees.
 
                      INVESTMENT OBJECTIVES AND POLICIES
 
LOOMIS SAYLES BOND FUND
 
  The Fund's investment objective is high total investment return through a
combination of current income and capital appreciation.
     
  The Fund seeks to achieve its objective by normally investing substantially
all of its assets in fixed income securities, although up to 20% of its assets
may be invested in preferred stocks. At least 65% of the Fund's total assets
will normally be invested in bonds. The fixed income securities in which the
Fund may invest include corporate securities, securities issued or guaranteed
by the U.S. Government or its authorities, agencies or instrumentalities
("U.S. Government Securities"), commercial paper, zero coupon securities,
mortgage-backed securities, collateralized mortgage obligations ("CMOs"),
asset-backed securities, when-issued securities, Rule 144A securities,
repurchase agreements and convertible securities. The Fund may engage in
options and futures transactions, repurchase transactions, foreign currency
hedging transactions and swap transactions.      
 
  The Fund may invest any portion of its assets in securities of Canadian
issuers, and up to 20% of its assets in securities of other foreign issuers.
The Fund may also invest up to 35% of its assets in securities of below
investment grade quality (commonly known as "junk bonds"). Securities of below
investment grade quality are securities rated below the top four rating
categories by each major rating agency that has rated the security, including
securities in the lowest rating categories, and unrated securities that Loomis
Sayles determines to be of comparable quality.
     
  The percentages of the Fund's assets invested as of December 31, 1996 in
securities assigned to the various rating categories by Standard & Poor's and
Moody's Investors Service, Inc. ("Moody's") were as follows: "AAA"/"Aaa"--
5.2%; "AA"/"Aa"--11.1%; "A"/"A"--9.5%; "BBB"/"Baa"--27.3%; "BB"/"Ba"--13.5%;
"B"/"B"--12.1%; "CCC"/"Caa"--5.1%.      
 
                                       9
<PAGE>
 
LOOMIS SAYLES GLOBAL BOND FUND
 
  The Fund's investment objective is high total investment return through a
combination of high current income and capital appreciation.
 
  The Fund seeks to achieve its objective by investing primarily in investment
grade fixed income securities denominated in various currencies, including
U.S. dollars, or in multicurrency units. Under normal conditions, the Fund
will invest at least 65% of its total assets in fixed income securities of
issuers from at least three countries, which may include the United States,
and no more than 40% of its assets in issuers headquartered in any one
country. However, up to 100% of the Fund's assets may be denominated in U.S.
dollars. The fixed income securities in which the Fund may invest include
corporate securities, U.S. Government Securities, commercial paper, zero
coupon securities, mortgage-backed securities, CMOs, asset-backed securities,
when-issued securities, Rule 144A securities, repurchase agreements and
convertible securities. The Fund may engage in options and futures
transactions, repurchase transactions, foreign currency hedging transactions
and swap transactions.
 
LOOMIS SAYLES HIGH YIELD FUND
 
  The Fund's investment objective is high total investment return through a
combination of current income and capital appreciation.
 
  The Fund seeks to achieve its objective by normally investing substantially
all of its assets in fixed income securities, although up to 20% of its assets
may be invested in preferred stocks and up to 10% of its assets may be
invested in common stocks. The fixed income securities in which the Fund may
invest include corporate securities, U.S. Government Securities, commercial
paper, zero coupon securities, mortgage-backed securities, CMOs, asset-backed
securities, when-issued securities, Rule 144A securities, repurchase
agreements and convertible securities. The Fund may engage in options and
futures transactions, repurchase transactions, foreign currency hedging
transactions and swap transactions. The Fund may invest any portion of its
assets in securities of Canadian issuers and up to 50% of its assets in the
securities of other foreign issuers.
 
  The Fund will normally invest at least 65% of its assets in fixed income
securities of below investment grade quality (commonly referred to as "junk
bonds").
 
LOOMIS SAYLES INTERMEDIATE MATURITY BOND FUND
 
  The Fund's investment objective is high total investment return through a
combination of current income and capital appreciation.
 
  The Fund seeks to achieve its objective by normally investing at least 90%
of its assets in fixed income securities of investment grade quality and to
 
                                      10
<PAGE>
 
maintain an average dollar weighted maturity of between three and ten years.
For purposes of the 90% test, a security will be treated as being of
investment grade quality if it is rated by at least one major rating agency in
one of its top four rating categories at the time of purchase or, if unrated,
is determined by Loomis Sayles to be of comparable quality. The Fund may also
invest up to 10% of its assets in fixed income securities of below investment
grade quality (commonly known as "junk bonds"). The fixed income securities in
which the Fund may invest include corporate securities, U.S. Government
Securities, commercial paper, zero coupon securities, mortgage-backed
securities, CMOs, asset-backed securities, when-issued securities, Rule 144A
securities, repurchase agreements and convertible securities. The Fund may
engage in options and futures transactions, repurchase transactions, foreign
currency hedging transactions, swap transactions, and securities lending. The
Fund may invest any portion of its assets in securities of Canadian issuers
and up to 20% of its assets in securities of other foreign issuers.
 
LOOMIS SAYLES INVESTMENT GRADE BOND FUND
 
  The Fund's investment objective is high total investment return through a
combination of current income and capital appreciation.
     
  The Fund seeks to achieve its objective by normally investing at least 65%
of its total assets in fixed income securities of investment grade quality. Up
to 20% of the Fund's assets may be invested in preferred stocks. The Fund may
also invest up to 10% of its assets in fixed income securities of below
investment grade quality (commonly known as "junk bonds"). The fixed income
securities in which the Fund may invest include corporate securities, U.S.
Government Securities, commercial paper, zero coupon securities, mortgage-
backed securities, CMOs, asset-backed securities, when-issued securities, Rule
144A securities, repurchase agreements and convertible securities. The Fund
may engage in options and futures transactions, repurchase transactions,
foreign currency hedging transactions, swap transactions and securities
lending. The Fund may invest any portion of its assets in securities of
Canadian issuers and up to 20% of its assets in the securities of other
foreign issuers.      
 
LOOMIS SAYLES SHORT-TERM BOND FUND
 
  The Fund's investment objective is high total investment return through a
combination of current income and capital appreciation with relatively low
fluctuation in net asset value.
 
  The Fund seeks to achieve its objective by normally investing substantially
all of its assets in fixed income securities, although up to 20% of its assets
may be invested in non-convertible preferred stock. At least 65% of the Fund's
total
 
                                      11
<PAGE>
 
assets will normally be invested in bonds with a remaining maturity of 5 years
or less. The fixed income securities in which the Fund may invest include
corporate securities, U.S. Government Securities, commercial paper, zero
coupon securities, mortgage-backed securities, CMOs, asset-backed securities,
when-issued securities, Rule 144A securities, repurchase agreements and
convertible securities. The Fund may engage in options and futures
transactions, repurchase transactions, foreign currency hedging transactions
and swap transactions. The Fund may invest up to 20% of its assets in
securities of foreign issuers.
 
  In an effort to minimize fluctuations in market value, the Fund is expected
to maintain an average dollar-weighted maturity of between one and three
years.
 
ALL FUNDS
 
  For temporary defensive purposes, each Fund may invest any portion of its
assets in fixed income securities, cash or any other securities deemed
appropriate by Loomis Sayles.
 
  Except for each Fund's investment objective, and any investment policies
that are identified as "fundamental," all of the investment policies of each
Fund may be changed without a vote of Fund shareholders.
 
                 MORE INFORMATION ABOUT THE FUNDS' INVESTMENTS
                            AND RISK CONSIDERATIONS
 
DEBT AND OTHER FIXED INCOME SECURITIES
 
  Each of the Funds may invest in fixed income securities of any maturity,
although the Short-Term Bond Fund expects to maintain an average weighted
maturity of less than three years, and the Intermediate Maturity Bond Fund
expects to maintain an average weighted maturity of between three and ten
years. Fixed income securities pay a specified rate of interest or dividends,
or a rate that is adjusted periodically by reference to some specified index
or market rate. Fixed income securities include securities issued by federal,
state, local and foreign governments and related agencies, and by a wide range
of private issuers. Because interest rates vary, it is impossible to predict
the income of a Fund that invests in fixed income securities for any
particular period. The net asset value of such a Fund's shares will vary as a
result of changes in the value of the securities in the Fund's portfolio.
 
  Fixed income securities are subject to market and credit risk. Market risk
relates to changes in a security's value as a result of changes in interest
rates generally. In general, the values of fixed income securities increase
when prevailing interest rates fall and decrease when interest rates rise.
Credit risk relates to the ability of the issuer to make payments of principal
and interest.
 
                                      12
<PAGE>
 
U.S. GOVERNMENT SECURITIES
 
  U.S. Government Securities have different kinds of government support. For
example, some U.S. Government Securities, such as U.S. Treasury bonds, are
supported by the full faith and credit of the United States, whereas certain
other U.S. Government Securities issued or guaranteed by federal agencies or
government-sponsored enterprises are not supported by the full faith and
credit of the United States.
 
  Although U.S. Government Securities generally do not involve the credit
risks associated with other types of fixed income securities, the market
values of U.S. Government Securities do go up and down as interest rates
change. Thus, for example, the value of an investment in a Fund that holds
U.S. Government Securities may fall during times of rising interest rates.
Yields on U.S. Government Securities tend to be lower than those on corporate
securities of comparable maturities.
 
  Some U.S. Government Securities, such as Government National Mortgage
Association Certificates ("GNMA"), are known as "mortgage-backed" securities.
Interest and principal payments on the mortgages underlying mortgage-backed
U.S. Government Securities are passed through to the holders of the security.
If a Fund purchases mortgage-backed securities at a discount or a premium, the
Fund will recognize a gain or loss when the payments of principal, through
prepayment or otherwise, are passed through to the Fund and, if the payment
occurs in a period of falling interest rates, the Fund may not be able to
reinvest the payment at as favorable an interest rate. As a result of these
principal prepayment features, mortgage-backed securities are generally more
volatile investments than many other fixed income securities.
 
  In addition to investing directly in U.S. Government Securities, the Funds
may purchase certificates of accrual or similar instruments ("strips")
evidencing undivided ownership interests in interest payments or principal
payments, or both, in U.S. Government Securities. These investment instruments
may be highly volatile.
 
LOWER RATED FIXED INCOME SECURITIES
 
  Each Fund may invest a portion of its assets in securities rated below
investment grade (commonly referred to as "junk bonds"). The Bond Fund may
invest up to 35%, the Global Bond and Short-Term Bond Funds each may invest up
to 20%, the Investment Grade Bond and Intermediate Maturity Bond Funds each
may invest up to 10% and the High Yield Fund will normally invest at least 65%
of its assets in such securities. For purposes of the foregoing percentages, a
security will be treated as being of investment grade quality if at the time a
Fund acquires it at least one major rating agency has rated the security in
its top
 
                                      13
<PAGE>
 
four rating categories (even if another such agency has issued a lower
rating), or if the security is unrated but Loomis Sayles determines it to be
of investment grade quality. Lower rated fixed income securities generally
provide higher yields, but are subject to greater credit and market risk, than
higher quality fixed income securities. Lower rated fixed income securities
are considered predominantly speculative with respect to the ability of the
issuer to meet principal and interest payments. Achievement of the investment
objective of a Fund investing in lower rated fixed income securities may be
more dependent on Loomis Sayles' own credit analysis than is the case with
higher quality bonds. The market for lower rated fixed income securities may
be more severely affected than some other financial markets by economic
recession or substantial interest rate increases, by changing public
perceptions of this market or by legislation that limits the ability of
certain categories of financial institutions to invest in these securities. In
addition, the secondary market may be less liquid for lower rated fixed income
securities. This lack of liquidity at certain times may affect the values of
these securities and may make the valuation and sale of these securities more
difficult. Securities in the lowest rating categories may be in poor standing
or in default. Securities in the lowest investment grade category (BBB or Baa)
have some speculative characteristics.
 
  For more information about the ratings services' descriptions of the various
rating categories, see Appendix A.
 
COMMON STOCKS AND OTHER EQUITY SECURITIES
 
  Common stocks and similar equity securities, such as warrants and
convertibles, are volatile and more risky than some other forms of investment.
The value of an investment in a Fund that invests in equity securities may
sometimes decrease. Equity securities of companies with relatively small
market capitalization may be more volatile than the securities of larger, more
established companies and than the broad equity market indexes.
 
ZERO COUPON SECURITIES
 
  Each Fund may invest in "zero coupon" fixed income securities. These
securities accrue interest at a specified rate, but do not pay interest in
cash on a current basis. A Fund investing in zero coupon securities is
required to distribute the income on these securities to Fund shareholders as
the income accrues, even though the Fund is not receiving the income in cash
on a current basis. Thus the Fund may have to sell other investments to obtain
cash to make income distributions at times when Loomis Sayles would not
otherwise deem it advisable to do so. The market value of zero coupon
securities is often more volatile than that of non-zero coupon fixed income
securities of comparable quality and maturity.
 
 
                                      14
<PAGE>
 
MORTGAGE-BACKED SECURITIES
     
  Each Fund may invest in mortgage-backed securities, such as GNMA or Federal
National Mortgage Association certificates, which differ from traditional debt
securities. Among the major differences are that interest and principal
payments are made more frequently, usually monthly, and that principal may be
prepaid at any time because the underlying mortgage loans generally may be
prepaid at any time. As a result, if a Fund purchases these assets at a
premium, a faster-than-expected prepayment rate will reduce yield to maturity,
and a slower-than-expected prepayment rate will increase yield to maturity. If
a Fund purchases mortgage-backed securities at a discount, faster-than-
expected prepayments will increase, and slower-than-expected prepayments will
reduce, yield to maturity. Prepayments, and resulting amounts available for
reinvestment by the Fund, are likely to be greater during period of declining
interest rates and, as a result, are likely to be reinvested at lower interest
rates. Accelerated prepayments on securities purchased at a premium may result
in a loss of principal if the premium has not been fully amortized at the time
of prepayment. Although these securities will decrease in value as a result of
increases in interest rates generally, they are likely to appreciate less than
other fixed-income securities when interest rates decline because of the risk
of prepayments.      
 
COLLATERALIZED MORTGAGE OBLIGATIONS
     
  Each Fund may invest in CMOs. A CMO is a security backed by a portfolio of
mortgages or mortgage-backed securities held under an indenture. CMOs may be
issued either by U.S. Government instrumentalities or by non-governmental
entities. The issuer's obligation to make interest and principal payments is
secured by the underlying portfolio of mortgages or mortgage-backed
securities. CMOs are issued with a number of classes or series which have
different maturities and which may represent interests in some or all of the
interest or principal on the underlying collateral or a combination thereof.
CMOs of different classes are generally retired in sequence as the underlying
mortgage loans in the mortgage pool are repaid. In the event of sufficient
early prepayments on such mortgages, the class or series of CMOs first to
mature generally will be retired prior to its maturity. As with other
mortgage-backed securities, the early retirement of a particular class or
series of CMOs held by a Fund could involve the loss of any premium the Fund
paid when it acquired the investment and could result in the Fund's
reinvesting the proceeds at a lower interest rate than the retired CMO paid.
Because of the early retirement feature, CMOs may be more volatile than many
other fixed-income investments.      
 
ASSET-BACKED SECURITIES
     
  Each Fund may invest in asset-backed securities. Through the use of trusts
and special purpose corporations, automobile and credit card receivables are
securitized in pass-through structures similar to mortgage pass-through      
 
                                      15
<PAGE>
 
    
structures or in a pass-through structure similar to the CMO structure.
Generally, the issuers of asset-backed bonds, notes or pass-through
certificates are special purpose entities and do not have any significant
assets other than the receivables securing such obligations. In general, the
collateral supporting asset-backed securities is of shorter maturity than
mortgage loans. Instruments backed by pools of receivables are similar to
mortgage-backed securities in that they are subject to unscheduled prepayments
of principal prior to maturity. When the obligations are prepaid, the Fund
will ordinarily reinvest the prepaid amounts in securities the yields of which
reflect interest rates prevailing at the time. Therefore, a Fund's ability to
maintain a portfolio that includes high-yielding asset-backed securities will
be adversely affected to the extent that prepayments of principal must be
reinvested in securities that have lower yields than the prepaid obligations.
Moreover, prepayments of securities purchased at a premium could result in a
realized loss.      
 
WHEN-ISSUED SECURITIES
 
  Each Fund may purchase securities on a "when-issued" basis. This means that
the Fund will enter into a commitment to buy the security before the security
has been issued. The Fund's payment obligation and the interest rate on the
security are determined when the Fund enters into the commitment. The security
is typically delivered to the Fund 15 to 120 days later. No interest accrues
on the security between the time the Fund enters into the commitment and the
time the security is delivered. If the value of the security being purchased
falls between the time a Fund commits to buy it and the payment date, the Fund
may sustain a loss. The risk of this loss is in addition to the Fund's risk of
loss on the securities actually in its portfolio at the time. In addition,
when the Fund buys a security on a when-issued basis, it is subject to the
risk that market rates of interest will increase before the time the security
is delivered, with the result that the yield on the security delivered to the
Fund may be lower than the yield available on other, comparable securities at
the time of delivery. If a Fund has outstanding obligations to buy when-issued
securities, it will maintain liquid assets in a segregated account at its
custodian bank in an amount sufficient to satisfy these obligations.
 
RULE 144A SECURITIES
 
  Each Fund may invest in Rule 144A securities, which are privately offered
securities that can be resold only to certain qualified institutional buyers.
Rule 144A securities are treated as illiquid, unless Loomis Sayles has
determined, under guidelines established by the Trust's trustees, that the
particular issue of Rule 144A securities is liquid.
 
FOREIGN SECURITIES
     
  Each Fund may invest in securities of issuers organized or headquartered
outside the United States ("foreign securities"). The Short-Term Bond Fund      
 
                                      16
<PAGE>
 
    
will not purchase a foreign security if, as a result, the Fund's holdings of
foreign securities would exceed 20% of the Fund's assets. The Bond,
Intermediate Maturity Bond and Investment Grade Bond Funds may each invest any
portion of its assets in securities of Canadian issuers, but will not purchase
foreign securities other than those of Canadian issuers if, as a result, such
Fund's holdings of non-U.S. and non-Canadian securities would exceed 20% of
the Fund's assets. The High Yield Fund may invest any portion of its assets in
securities of Canadian issuers and up to 50% of its assets in the securities
of other foreign issuers.      
 
  Although investing in foreign securities may increase a Fund's
diversification and reduce portfolio volatility, foreign securities may
present risks not associated with investments in comparable securities of U.S.
issuers. There may be less information publicly available about a foreign
corporate or government issuer than about a U.S. issuer, and foreign corporate
issuers are not generally subject to accounting, auditing and financial
reporting standards and practices comparable to those in the United States.
The securities of some foreign issuers are less liquid and at times more
volatile than securities of comparable U.S. issuers. Foreign brokerage
commissions and securities custody costs are often higher than in the United
States. With respect to certain foreign countries, there is a possibility of
governmental expropriation of assets, confiscatory taxation, political or
financial instability and diplomatic developments that could affect the value
of investments in those countries. A Fund's receipt of interest on foreign
government securities may depend on the availability of tax or other revenues
to satisfy the issuer's obligations.
 
  A Fund's investments in foreign securities may include investments in
countries whose economies or securities markets are not yet highly developed.
Special considerations associated with these investments (in addition to the
considerations regarding foreign investments generally) may include, among
others, greater political uncertainties, an economy's dependence on revenues
from particular commodities or on international aid or development assistance,
currency transfer restrictions, highly limited numbers of potential buyers for
such securities and delays and disruptions in securities settlement
procedures.
 
  Since most foreign securities are denominated in foreign currencies or
traded primarily in securities markets in which settlements are made in
foreign currencies, the value of these investments and the net investment
income available for distribution to shareholders of a Fund investing in these
securities may be affected favorably or unfavorably by changes in currency
exchange rates or exchange control regulations. Changes in the value relative
to the U.S. dollar of a foreign currency in which a Fund's holdings are
denominated will result in a change in the U.S. dollar value of the Fund's
assets and the Fund's income available for distribution.
 
 
                                      17
<PAGE>
 
  In addition, although part of a Fund's income may be received or realized in
foreign currencies, the Fund will be required to compute and distribute its
income in U.S. dollars. Therefore, if the value of a currency relative to the
U.S. dollar declines after the Fund's income has been earned in that currency,
translated into U.S. dollars and declared as a dividend, but before payment of
the dividend, the Fund could be required to liquidate portfolio securities to
pay the dividend. Similarly, if the value of a currency relative to the U.S.
dollar declines between the time the Fund accrues expenses in U.S. dollars and
the time such expenses are paid, the amount of such currency required to be
converted into U.S. dollars will be greater than the equivalent amount in such
currency of such expenses at the time they were incurred.
 
  In determining whether to invest assets of the Funds in securities of a
particular foreign issuer, Loomis Sayles will consider the likely effects of
foreign taxes on the net yield available to the Fund and its shareholders.
Compliance with foreign tax law may reduce a Fund's net income available for
distribution to shareholders.
 
FOREIGN CURRENCY HEDGING TRANSACTIONS
 
  The Funds may engage in foreign currency exchange transactions to protect
the value of specific portfolio positions or in anticipation of changes in
relative values of currencies in which current or future Fund portfolio
holdings are denominated or quoted. For example, to protect against a change
in the foreign currency exchange rate between the date on which a Fund
contracts to purchase or sell a security and the settlement date for the
purchase or sale, or to "lock in" the equivalent of a dividend or interest
payment in another currency, a Fund might purchase or sell a foreign currency
on a spot (that is, cash) basis at the prevailing spot rate. If conditions
warrant, the Funds may also enter into private contracts to purchase or sell
foreign currencies at a future date ("forward contracts"). The Funds might
also purchase exchange-listed and over-the-counter call and put options on
foreign currencies. Over-the-counter currency options are generally less
liquid than exchange-listed options, and will be treated as illiquid assets.
The Funds may not be able to dispose of over-the-counter options readily.
 
  Foreign currency transactions involve costs and may result in losses. In
addition, each Fund's ability to engage in currency hedging transactions may
be limited by tax considerations.
 
SWAP TRANSACTIONS
 
  The Funds may enter into interest rate or currency swaps. The Funds will
enter into these transactions primarily to preserve a return or spread on a
particular investment or portion of its portfolio, to protect against currency
 
                                      18
<PAGE>
 
fluctuations, as a duration management technique or to protect against any
increase in the price of securities a Fund anticipates purchasing at a later
date. Interest rate swaps involve the exchange by a 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 relative values of the
specified currencies. The Fund will maintain liquid assets in a segregated
custodial account to cover its current obligations under swap agreements.
Because swap agreements are not exchange-traded, but are private contracts
into which the Fund and a swap counter party enter as principals, the Fund may
experience a loss or delay in recovering assets if the counter party were to
default on its obligations.
 
OPTIONS AND FUTURES TRANSACTIONS
 
  The Funds may buy, sell or write options on securities, securities indexes,
currencies or futures contracts and may buy and sell futures contracts on
securities, securities indexes or currencies. The Funds may engage in these
transactions either for the purpose of enhancing investment return, or to
hedge against changes in the value of other assets that the Funds own or
intend to acquire. Options and futures fall into the broad category of
financial instruments known as "derivatives" and involve special risks. Use of
options or futures for other than hedging purposes may be considered a
speculative activity, involving greater risks than are involved in hedging.
     
  Options can generally be classified as either "call" or "put" options. There
are two parties to a typical options transaction: the "writer" and the
"buyer." A call option gives the buyer the right to buy a security or other
asset (such as an amount of currency or a futures contract) from, and a put
option gives the buyer the right to sell a security or other asset to, the
option writer at a specified price, on or before a specified date. The buyer
of an option pays a premium when purchasing the option, which reduces the
return on the underlying security or other asset if the option is exercised,
and results in a loss if the option expires unexercised. The writer of an
option receives a premium from writing an option, which may increase its
return if the option expires or is closed out at a profit. If a Fund as the
writer of an option is unable to close out an unexpired option, it must
continue to hold the underlying security or other asset until the option
expires, to "cover" its obligation under the option.      
 
  A futures contract creates an obligation by the seller to deliver and the
buyer to take delivery of the type of instrument or cash at the time and in
the amount specified in the contract. Although many futures contracts call for
the delivery (or acceptance) of the specified instrument, futures are usually
closed out before the settlement date through the purchase (or sale) of a
comparable
 
                                      19
<PAGE>
 
contract. If the price of the sale of the futures contract by a Fund exceeds
(or is less than) the price of the offsetting purchase, the Fund will realize
a gain (or loss).
     
  The value of options purchased by a Fund and futures contracts held by a
Fund may fluctuate based on a variety of market and economic factors. In some
cases, the fluctuations may offset (or be offset by) changes in the value of
securities held in a Fund's portfolio. All transactions in options and futures
involve the possible risk of loss to the Fund of all or a significant part of
the value of its investment. In some cases, the risk of loss may exceed the
amount of the Fund's investment. When a Fund writes a call option or sells a
futures contract without holding the underlying securities, currencies or
futures contracts, its potential loss is unlimited. The Fund will be required,
however, to set aside with its custodian bank certain assets in amounts
sufficient at all times to satisfy its obligations under options, futures and
contracts.      
     
  The successful use of options and futures will usually depend on Loomis
Sayles' ability to forecast stock market, currency or other financial market
movements correctly. The Fund's ability to hedge against adverse changes in
the value of securities held in its portfolio through options and futures also
depends on the degree of correlation between changes in the value of futures
or options positions and changes in the values of the portfolio securities.
The successful use of futures and exchange traded options also depends on the
availability of a liquid secondary market to enable a Fund to close its
positions on a timely basis. There can be no assurance that such a market will
exist at any particular time. In the case of options that are not traded on an
exchange ("over-the-counter" options), a Fund is at risk that the other party
to the transaction will default on its obligations, or will not permit a Fund
to terminate the transaction before its scheduled maturity. As a result of
these characteristics, each Fund will treat most over-the-counter options (and
the assets it segregates to cover its obligations thereunder) as illiquid.      
 
  The options and futures markets of foreign countries are small compared to
those of the United States and consequently are characterized in most cases by
less liquidity than are the U.S. markets. In addition, foreign markets may be
subject to less detailed reporting requirements and regulatory controls than
U.S. markets. Furthermore, investments in options in foreign markets are
subject to many of the same risks as other foreign investments. See "Foreign
Securities" above.
 
REPURCHASE AGREEMENTS
 
  Each Fund may invest in repurchase agreements. In repurchase agreements, a
Fund buys securities from a seller, usually a bank or brokerage firm, with the
understanding that the seller will repurchase the securities at a higher price
at a
 
                                      20
<PAGE>
 
later date. Such transactions afford an opportunity for a Fund to earn a
return on available cash at minimal market risk, although the Fund may be
subject to various delays and risks of loss if the seller is unable to meet
its obligations to repurchase.
 
SECURITIES LENDING
 
  The Intermediate Maturity Bond and Investment Grade Bond Funds may lend
their portfolio securities to broker-dealers or other parties under contracts
calling for the deposit by the borrower with the Fund's custodian of cash
collateral equal to at least the market value of the securities loaned, marked
to market on a daily basis. The Fund will continue to benefit from interest or
dividends on the securities loaned and will also receive interest through
investment of the cash collateral in short-term liquid investments. No loans
will be made if, as a result, the aggregate amount of such loans outstanding
at any time would exceed 33 1/3% of the Fund's total assets (taken at current
value). Any voting rights, or rights to consent, relating to securities loaned
pass to the borrower. However, if a material event affecting the investment
occurs, such loans will be called so that the securities may be voted by the
Fund. The Fund pays various fees in connection with such loans, including
shipping fees and reasonable custodial or placement fees.
 
  Securities loans must be fully collateralized at all times, but involve some
credit risk to the Fund if the borrower defaults on its obligation and the
Fund is delayed or prevented from recovering the collateral.
 
                         THE FUNDS' INVESTMENT ADVISER
 
  The Funds' investment adviser is Loomis Sayles, One Financial Center,
Boston, Massachusetts 02111. Founded in 1926, Loomis Sayles is one of the
country's oldest and largest investment firms. Loomis Sayles' general partner
is indirectly owned by New England Investment Companies, L.P., a publicly-
traded limited partnership whose general partner is indirectly owned by
Metropolitan Life Insurance Company.
 
  In addition to selecting and reviewing the Funds' investments, Loomis Sayles
provides executive and other personnel for the management of the Funds. The
Funds' board of trustees supervises Loomis Sayles' conduct of the affairs of
the Funds.
     
  As of March 3, 1997, the Loomis Sayles Employees' Profit Sharing Plan owned
87% of the Intermediate Maturity Bond Fund, and the Loomis-Sayles Funded
Pension Plan owned 28% of the Global Bond Fund. As of March 3, 1997, Loomis
Sayles owned 64% of the Investment Grade Bond Fund. Each of these shareholders
may be deemed to control the relevant Fund.      
 
 
                                      21
<PAGE>
 
  Daniel J. Fuss, President of the Trust and Executive Vice President of
Loomis Sayles, has served as the portfolio manager of the Bond Fund since its
commencement of investment operations in 1991, as the portfolio manager of the
High Yield Fund since its commencement of investment operations in 1996, and
as the portfolio manager of the Investment Grade Bond Fund since its
commencement of investment operations in 1997. Kathleen C. Gaffney has served
as associate portfolio manager of the High Yield Fund since its commencement
of investment operations in 1996. E. John deBeer, Vice President of the Trust
and of Loomis Sayles, has served as the portfolio manager of the Global Bond
Fund since its commencement of investment operations in 1991. Anthony J.
Wilkins, Vice President of the Trust and of Loomis Sayles, has served as the
portfolio manager of the Intermediate Maturity Bond Fund since its
commencement of investment operations in 1997. John Hyll, Vice President of
the Trust and of Loomis Sayles, has served as the portfolio manager of the
Short-Term Bond Fund since its commencement of investment operations in 1992.
Each of the foregoing has been employed by Loomis Sayles for at least five
years.
 
                                      22
<PAGE>
 
                                 FUND EXPENSES
 
    
  Each Fund pays Loomis Sayles a monthly investment advisory fee at the
following annual percentage rates of the Fund's average daily net assets:      
 
<TABLE>    
<CAPTION>
   FUND                                                                    RATE
   ----                                                                    ----
   <S>                                                                     <C>
   Bond................................................................... .60%
   Global Bond............................................................ .60%
   High Yield............................................................. .60%
   Intermediate Maturity Bond............................................. .40%
   Investment Grade Bond.................................................. .40%
   Short-Term Bond........................................................ .25%
</TABLE>     
 
  In addition to the investment advisory fee, each Fund pays all expenses not
expressly assumed by Loomis Sayles, including taxes, brokerage commissions,
fees and expenses of registering or qualifying the Fund's shares under federal
and state securities laws, fees of the Fund's custodian, transfer agent,
independent accountants and legal counsel, expenses of shareholders' and
trustees' meetings, expenses of preparing, printing and mailing prospectuses
to existing shareholders and fees of trustees who are not directors, officers
or employees of Loomis Sayles or its affiliated companies.
     
  Loomis Sayles has voluntarily agreed, for an indefinite period, to reduce
its advisory fees and/or bear other Fund expenses to the extent necessary to
limit Fund total annual operating expenses of the Retail Class of shares of
each Fund to the following annual percentage rate of the Fund's average net
assets:      
 
<TABLE>    
<CAPTION>
   FUND                                                                    RATE
   ----                                                                    ----
   <S>                                                                     <C>
   Bond................................................................... 1.00%
   Global Bond............................................................ 1.15%
   High Yield............................................................. 1.00%
   Intermediate Maturity Bond.............................................  .80%
   Investment Grade Bond..................................................  .80%
   Short-Term Bond........................................................  .75%
</TABLE>     
 
  Loomis Sayles may change or terminate these voluntary arrangements at any
time, but the Funds' Prospectus would be supplemented to describe the change.
 
  Under a Distribution Plan adopted pursuant to Rule 12b-1 under the 1940 Act,
each of the Funds pays the Distributor, a subsidiary of Loomis Sayles, a
monthly distribution fee at an annual rate not to exceed 0.25% of the Fund's
average net assets attributable to the Retail Shares. The Distributor may pay
all or any portion of the Distribution Fee to securities dealers or other
organizations (including, but not limited to, any affiliate of the
Distributor) as commissions,
 
                                      23
<PAGE>
 
asset-based sales charges or other compensation with respect to the sale of
Retail Class shares of the Funds, or for providing personal services to
investors in Retail Class shares of the Funds and/or the maintenance of
accounts, and may retain all or any portion of the Distribution Fee as
compensation for the Distributor's services as principal underwriter of the
Retail Class shares of the Funds.
 
  Loomis Sayles may pay certain broker-dealers and financial intermediaries
whose customers own shares of the Funds a continuing fee in an amount of up to
 .25% annually of the value of Fund shares held for those customers' accounts.
These fees are paid by Loomis Sayles out of its own assets and are not
assessed against the Funds.
 
                            PORTFOLIO TRANSACTIONS
 
    
  Portfolio turnover considerations will not limit Loomis Sayles' investment
discretion in managing the Funds' assets. The Funds anticipate that their
portfolio turnover rates will vary significantly from time to time depending
on the volatility of economic and market conditions. High portfolio turnover
may involve higher costs and higher levels of taxable gains. Although it is
not possible to predict portfolio turnover rates with certainty, Loomis Sayles
does not expect the portfolio turnover rates of the High Yield, Intermediate
Maturity Bond and Investment Grade Bond Funds to exceed 60%, 100%, and 60%,
respectively.      
 
                            HOW TO PURCHASE SHARES
 
  An investor may make an initial purchase of shares of any Fund by submitting
a completed application form and payment to:
 
      Boston Financial Data Services
      P.O. Box 8314
      Boston, Massachusetts 02266-8314
      Attn: Loomis Sayles Funds
     
  The minimum initial investment for retail class of the Funds' shares
("Retail Shares") is $250,000 in that Fund. This minimum initial investment
does not apply to purchases through financial intermediaries including, but
not limited to, certain financial advisers, broker dealers, 401(k) alliances,
wrap programs, no transaction fee programs, bank trust departments, financial
consultants and insurance companies. The minimum investment may be waived by
Loomis Sayles in its sole discretion and will be waived for any new
shareholder who invests less than $250,000 but signs a letter of intent
stating the shareholder's intention to bring his or her balance to $250,000 in
six months      
 
                                      24
<PAGE>
 
    
or less. Loomis Sayles reserves the right to redeem, at net asset value, the
accounts of shareholders that have signed a letter of intent but fail to meet
the minimum investment within the specified time. Subsequent investments must
be at least $50.      
     
  Shares of any Fund may be purchased by (i) cash, (ii) exchanging Retail
Class shares of any Fund (or any other series of Loomis Sayles Funds) (iii)
exchanging securities on deposit with a custodian acceptable to Loomis Sayles
or (iv) a combination of such securities and cash. Loomis Sayles will not
approve the acceptance of securities in exchange for shares of any Fund unless
(1) Loomis Sayles, in its sole discretion, believes the securities are
appropriate investments for the Fund; (2) the investor represents and agrees
that all securities offered to the Fund can be resold by the Fund without
restriction under the Securities Act of 1933, as amended (the "Securities
Act") or otherwise; and (3) the securities are eligible to be acquired under
the Fund's investment policies and restrictions. No investor owning 5% or more
of a Fund's shares may purchase additional shares of that Fund by exchange of
securities. In all cases Loomis Sayles reserves the right to reject any
securities that are proposed for exchange. Securities accepted by Loomis
Sayles in exchange for Fund shares will be valued in the same manner as the
Fund's assets as described below as of the time of the Fund's next
determination of net asset value after such acceptance. All dividends and
subscription or other rights which are reflected in the market price of
accepted securities at the time of valuation become the property of the Fund
and must be delivered to the Fund upon receipt by the investor from the
issuer. A gain or loss for federal income tax purposes would be realized upon
the exchange by an investor that is subject to federal income taxation,
depending upon the investor's basis in the securities tendered. An investor
who wishes to purchase shares by exchanging securities should obtain
instructions by calling 800-633-3330.      
     
  All purchases made by check should be in U.S. dollars and made payable to
State Street Bank and Trust Company. Third party checks will not be accepted.
When purchases are made by check or periodic account investment, redemption
will not be allowed until the investment being redeemed has been in the
account for 15 calendar days.      
 
  Upon acceptance of an investor's order, Boston Financial Data Services, Inc.
("BFDS"), the shareholder servicing agent for State Street Bank and Trust
Company ("State Street Bank"), opens an account, applies the payment to the
purchase of full and fractional Fund shares and mails a statement of the
account confirming the transaction.
 
  After an account has been established, an investor may send subsequent
investments at any time directly to BFDS at the above address. The remittance
must be accompanied by either the account identification slip detached from a
 
                                      25
<PAGE>
 
statement of account or a note containing sufficient information to identify
the account, i.e., the Fund name and the investor's account number or name and
social security number.
 
  Subsequent investments can also be made by federal funds wire. Investors
should instruct their banks to wire federal funds to State Street Bank and
Trust Company, ABA #011000028. The text of the wire should read as follows:
"$    amount, STATE STREET BOS ATTN Mutual Funds. Credit Fund (Fund Name and
Retail Class), DDA #9904-622-9, Shareholder Name, Shareholder Account Number."
A bank may charge a fee for transmitting funds by wire.
 
  Each Fund and the Distributor reserve the right to reject any purchase
order, including orders in connection with exchanges, for any reason which the
Fund or the Distributor in its sole discretion deems appropriate. Although the
Funds do not presently anticipate that they will do so, each Fund reserves the
right to suspend or change the terms of the offering of its shares.
 
  The price an investor pays will be the per share net asset value next
calculated after a proper investment order is received by the Trust's transfer
or other agent or subagent. Shares of each Fund are sold with no sales charge.
The net asset value of each Fund's shares is calculated once daily as of the
close of regular trading on the New York Stock Exchange on each day the
Exchange is open for trading, by dividing the Fund's net assets by the number
of shares outstanding. Portfolio securities are valued at their market value
as more fully described in the Statement of Additional Information.
 
  The Distributor may accept telephone orders from broker-dealers who have
been previously approved by the Distributor. It is the responsibility of such
broker-dealers to promptly forward purchase or redemption orders to the
Distributor. Although there is no sales charge imposed by the Fund or the
Distributor, broker-dealers may charge the investor a transaction-based fee or
other fee for their services at either the time of purchase or the time of
redemption. Such charges may vary among broker-dealers but in all cases will
be retained by the broker-dealer and not remitted to the Fund.
 
  Each Fund also offers an Institutional Class of shares that has a $1 million
minimum investment for certain investors and bears lower expenses. Because of
its lower expenses, the Institutional Class of shares of each Fund is expected
to have a higher total return than the Retail Class of shares.
 
                             SHAREHOLDER SERVICES
 
  The Funds offer the following shareholder services, which are more fully
described in the Statement of Additional Information. Explanations and forms
are available from BFDS. Telephone redemption and exchange privileges will
 
                                      26
<PAGE>
 
be established automatically when an investor opens an account unless an
investor elects on the application to decline the privileges. Other privileges
must be specifically elected. A signature guarantee will be required to
establish a privilege after an account is opened.
 
  FREE EXCHANGE PRIVILEGE. Retail Class shares of any Fund may be exchanged
for Retail Class shares of any other Fund (or any other fund that is a series
of Loomis Sayles Funds and that offers Retail Class shares) or for shares of
certain money market funds advised by New England Funds Management, L.P., an
affiliate of Loomis Sayles. Exchanges may be made by written instructions or
by telephone, unless an investor elected on the application to decline
telephone exchange privileges. The exchange privilege should not be viewed as
a means for taking advantage of short-term swings in the market, and the Funds
reserve the right to terminate or limit the privilege of any shareholder who
makes more than four exchanges in any calendar year. The Funds may terminate
or change the terms of the exchange privilege at any time, upon 60 days'
notice to shareholders. Exchanges of shares of the High Yield Fund purchased
within one year before such exchanges will be subject to a redemption fee of
2.00% of the amount exchanged. For purposes of determining whether a
redemption fee is payable with respect to shares of the High Yield Fund
purchased by exchange of shares of another Fund, the one year period shall be
deemed to begin on the date of such purchase by exchange.
 
  RETIREMENT PLANS. Institutional Class shares of the Funds may be purchased
by all types of tax-deferred retirement plans. Loomis Sayles makes available
retirement plan forms for IRAs.
 
  SYSTEMATIC WITHDRAWAL PLAN. If the value of an account is at least $25,000,
an investor may have periodic cash withdrawals automatically paid to the
investor or any person designated by the investor.
 
  AUTOMATIC INVESTMENT PLAN. Voluntary monthly investments of at least $50 may
be made automatically by pre-authorized withdrawals from an investor's
checking account.
 
                             HOW TO REDEEM SHARES
 
  An investor can redeem shares by sending a written request to Boston
Financial Data Services, Inc., P.O. Box 8314, Boston, Massachusetts 02266.
Proceeds from a written request may be sent to the investor in the form of a
check. As described below, an investor may also redeem shares by calling BFDS
at 800-626-9390. Proceeds resulting from a telephone redemption request can be
wired to an investor's bank account or sent by check in the name of the
registered owners to their record address.
 
                                      27
<PAGE>
 
  The written request must include the name of the Fund, the account number,
the exact name(s) in which the shares are registered, and the number of shares
or the dollar amount to be redeemed. All owners of the shares must sign the
request in the exact names in which the shares are registered (this appears on
an investor's confirmation statement) and should indicate any special capacity
in which they are signing (such as trustee or custodian or on behalf of a
partnership, corporation or other entity). Shareholders requesting that
redemption proceeds be wired to their bank accounts must provide specific wire
instructions.
 
  If (1) an investor is redeeming shares worth more than $50,000, (2) an
investor is requesting that the proceeds check be made out to someone other
than the registered owners or be sent to an address other than the record
address, (3) the account registration has changed within the last 30 days or
(4) an investor is instructing us to wire the proceeds to a bank account not
designated on the application, the investor must have his or her signature
guaranteed by an eligible guarantor. Eligible guarantors include commercial
banks, trust companies, savings associations, credit unions and brokerage
firms that are members of domestic securities exchanges. Before submitting the
redemption request, an investor should verify with the guarantor institution
that it is an eligible guarantor. Signature guarantees by notaries public are
not acceptable.
 
  If an investor has requested certificates for the investment, the investor
must enclose the certificates and a properly completed redemption form or
stock power. The Funds recommend that certificates be sent by registered mail.
When an investor telephones a redemption request, the proceeds are wired to
the bank account previously chosen by the investor. A wire fee (currently $5)
will be deducted from the proceeds. A telephonic redemption request must be
received by BFDS prior to the close of regular trading on the New York Stock
Exchange. If an investor telephones a request to BFDS after the Exchange
closes or on a day when the Exchange is not open for business, BFDS cannot
accept the request and a new one will be necessary. If an investor decides to
change the bank account to which proceeds are to be wired, the investor must
send in this change on the Service Options Form with a signature guarantee.
Telephonic redemptions may only be made if the investor's bank is a member of
the Federal Reserve System or has a correspondent bank that is a member of the
System. Unless an investor indicates otherwise on the account application,
BFDS will be authorized to act upon redemption and exchange instructions
received by telephone from the investor or any person claiming to act as the
investor's representative who can provide BFDS with the investor's account
registration and address as it appears on the records of State Street Bank.
BFDS will employ these or other reasonable procedures to confirm that
instructions communicated by telephone are genuine; the Fund, State Street
Bank, BFDS, the Distributor and Loomis Sayles will not be liable for any
losses due to unauthorized or
 
                                      28
<PAGE>
 
fraudulent instructions if these or other reasonable procedures are followed.
For information, consult BFDS. In times of heavy market activity, an investor
who encounters difficulty in placing a redemption or exchange order by
telephone may wish to place the order by mail as described above.
 
  The redemption price will be the net asset value per share next determined
after the redemption request and any necessary special documentation are
received by BFDS in proper form, less, in the case of the High Yield Fund, a
redemption fee of 2.00% of the amount redeemed with respect to shares of that
Fund purchased within one (1) year of such redemption. Loomis Sayles, in its
discretion, may waive the 2.00% redemption fee with respect to shares of the
High Yield Fund.
 
  Proceeds resulting from a written redemption request will normally be mailed
to an investor within seven days after receipt of the investor's request in
good order. Telephonic redemption proceeds will normally be wired to an
investor's bank on the first business day following receipt of a proper
redemption request. If an investor purchased shares by check and the check was
deposited less than 15 days prior to the redemption request, the Fund may
withhold redemption proceeds until the check has cleared.
 
  The Fund may suspend the right of redemption and may postpone payment for
more than seven days when the New York Stock Exchange is closed for other than
weekends or holidays, or if permitted by the rules of the SEC when trading on
the Exchange is restricted or during an emergency which makes it impracticable
for the Fund to dispose of its securities or to determine fairly the value of
its net assets, or during any other period permitted by the SEC for the
protection of investors.
 
                    CALCULATION OF PERFORMANCE INFORMATION
 
  The Funds' investment performance may from time to time be included in
advertisements about the Funds. "Yield" for each class of shares is calculated
by dividing the annualized net investment income per share during a recent 30-
day period by the maximum public offering price per share of the class on the
last day of that period.
 
  For purposes of calculating yield, net investment income is calculated in
accordance with SEC regulations and may differ from net investment income as
determined for financial reporting purposes. SEC regulations require that net
investment income be calculated on a "yield-to-maturity" basis, which has the
effect of amortizing any premiums or discounts in the current market value of
fixed income securities. The current dividend rate is based on net investment
income as determined for tax purposes, which may not reflect amortization in
the same manner.
 
                                      29
<PAGE>
 
  Yield is based on the price of the shares but does not reflect any
redemption fee in the case of the High Yield Fund.
 
  "Total return" for the one-, five- and ten-year periods (or for the life of
a class, if shorter) through the most recent calendar quarter represents the
average annual compounded rate of return on an investment of $1,000 in a Fund.
Total return may also be presented for other periods.
 
                DIVIDENDS, CAPITAL GAIN DISTRIBUTIONS AND TAXES
 
  The Bond, High Yield, Intermediate Maturity Bond and Investment Grade Bond
Funds declare and pay dividends quarterly; the Global Bond Fund declares and
pays its net investment income to shareholders as dividends annually; the
Short-Term Bond Fund declares dividends daily and makes payments monthly. Each
Fund also distributes all of its net capital gains realized from the sale of
portfolio securities. Any capital gain distributions are normally made
annually, but may, to the extent permitted by law, be made more frequently as
deemed advisable by the trustees of the Trust. The Trust's trustees may change
the frequency with which the Funds declare or pay dividends.
 
  Dividends and capital gain distributions will automatically be reinvested in
additional shares of the same Fund on the record date unless an investor has
elected to receive cash. Each Fund intends to qualify as a regulated
investment company under the Internal Revenue Code of 1986, as amended. As
such, so long as a Fund distributes substantially all its net investment
income and net capital gains to its shareholders, the Fund itself does not pay
any federal income tax to the extent such income and gains are so distributed.
An investor's income dividends and short term capital gain distributions are
taxable as ordinary income whether distributed in cash or additional shares.
Long-term capital gain distributions from all Funds are taxable as long-term
capital gains whether distributed in cash or additional shares and regardless
of how long an investor has owned shares of the Fund.
 
  Each Fund is required to withhold 31% of any redemption proceeds (including
the value of shares exchanged) and all income dividends and capital gain
distributions it pays (1) if an investor does not provide a correct, certified
taxpayer identification number, (2) if the Fund is notified that an investor
has underreported income in the past, or (3) if an investor fails to certify
to the Fund that he or she is not subject to such withholding.
 
  Dividends derived from interest on U.S. Government Securities may be exempt
from state and local taxes.
 
  State Street Bank will send investors and the IRS an annual statement
detailing federal tax information, including information about dividends and
 
                                      30
<PAGE>
 
distributions paid during the preceding year. An investor should keep this
statement as a permanent record. A fee may be charged for any duplicate
information requested.
 
NOTE:   The foregoing summarizes certain tax consequences of investing in the
        Funds. Before investing, an investor should consult his or her own tax
        adviser for more information concerning federal, state and local tax
        consequences of investing in, redeeming or exchanging Fund shares.
 
 
                                      31
<PAGE>
 
                                                                     APPENDIX A
 
                    DESCRIPTION OF BOND RATINGS ASSIGNED BY
                             STANDARD & POOR'S AND
                        MOODY'S INVESTORS SERVICE, INC.
 
STANDARD & POOR'S
 
                                      AAA
 
  This is the highest rating assigned by Standard & Poor's to a debt
obligation and indicates an extremely strong capacity to pay interest and
repay principal.
 
                                      AA
 
  Bonds rated AA also qualify as high quality debt obligations. Capacity to
pay interest and repay principal is very strong, and in the majority of
instances they differ from AAA issues only in small degree.
 
                                       A
 
  Bonds rated A have a strong capacity to pay interest and repay principal,
although they are somewhat more susceptible to the adverse effects of changes
in circumstances and economic conditions.
 
                                      BBB
 
  Bonds rated BBB are regarded as having an adequate capacity to pay interest
and repay principal. Whereas they normally exhibit adequate protection
parameters, adverse economic conditions or changing circumstances are more
likely to lead to a weakened capacity to repay principal and pay interest for
bonds in this category than for bonds in higher rated categories.
 
                                BB, B, CCC, CC
 
  Bonds rated BB, B, CCC and CC are regarded, on balance, as predominantly
speculative with respect to capacity to pay interest and repay principal in
accordance with the terms of the obligation. BB indicates the lowest degree of
speculation and CC the highest degree of speculation. While such bonds will
likely have some quality and protective characteristics, these are outweighed
by large uncertainties or major risk exposures to adverse conditions.
 
                                      32
<PAGE>
 
                                       C
 
  The rating C is reserved for income bonds on which no interest is being
paid.
 
                                       D
 
  Bonds rated D are in default, and payment of interest and/or repayment of
principal is in arrears.
 
  Plus (+) or Minus (-): The ratings from AA to B may be modified by the
addition of a plus or minus sign to show relative standing within the major
rating categories.
 
MOODY'S INVESTORS SERVICE, INC.
 
                                      AAA
 
  Bonds that are rated Aaa are judged to be of the best quality. They carry
the smallest degree of investment risk and are generally referred to as "gilt
edge." Interest payments are protected by a large, or by an exceptionally
stable, margin, and principal is secure. While the various protective elements
are likely to change, such changes as can be visualized are most unlikely to
impair the fundamentally strong position of such issues.
 
                                      AA
 
  Bonds that are rated Aa are judged to be high quality by all standards.
Together with the Aaa group they comprise what are generally known as high
grade bonds. They are rated lower than the best bonds because margins of
protection may not be as large as in Aaa securities or fluctuation of
protective elements may be of greater amplitude or there may be other elements
present that make the long-term risks appear somewhat larger than in Aaa
securities.
 
                                       A
 
  Bonds that are rated A possess many favorable investment attributes and are
to be considered as upper medium grade obligations. Factors giving security to
principal and interest are considered adequate, but elements may be present
that suggest a susceptibility to impairment sometime in the future.
 
                                      BAA
 
  Bonds that are rated Baa are considered as medium grade obligations; i.e.,
they are neither highly protected nor poorly secured. Interest payments and
principal security appear adequate for the present, but certain protective
elements may be lacking or may be characteristically unreliable over any great
length of time. Such bonds lack outstanding investment characteristics and, in
fact, have speculative characteristics as well.
 
                                      33
<PAGE>
 
                                      BA
 
  Bonds which are rated Ba are judged to have speculative elements; their
future cannot be considered as well assured. Often, the protection of interest
and principal payments may be very moderate, and thereby not well safeguarded
during both good and bad times over the future. Uncertainty of position
characterizes bonds in this class.
 
                                       B
 
  Bonds which are rated 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
 
  Bonds which are rated Caa are of poor standing. Such issues may be in
default or there may be present elements of danger with respect to principal
or interest.
 
                                      CA
 
  Bonds which are rated Ca represent obligations which are speculative in a
high degree. Such issues are often in default or have other marked
shortcomings.
 
                                       C
 
  Bonds which are rated C are the lowest rated class of bonds, and issues so
rated can be regarded as having extremely poor prospects of ever attaining any
real investment standing.
 
  Should no rating be assigned by Moody's, 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 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.
 
 
                                      34
<PAGE>
 
  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: Those bonds in the Aa, A, Baa, Ba and B groups which Moody's believes
      possess the strongest investment attributes are designated by the
      symbols Aa1, A1, Baa1, Ba1 and B1.
 
                                      35
<PAGE>
 
INVESTMENT ADVISER
Loomis, Sayles & Company, L.P.
One Financial Center
Boston, Massachusetts 02111
 
DISTRIBUTOR
Loomis Sayles Distributors, L.P.
One Financial Center
Boston, Massachusetts 02111
 
TRANSFER AND DIVIDEND PAYING AGENT
AND CUSTODIAN OF ASSETS
State Street Bank and Trust Company 
Boston, Massachusetts 02102
 
SHAREHOLDER SERVICING AGENT FOR 
STATE STREET BANK AND TRUST COMPANY 
Boston Financial Data Services, Inc. 
P.O. Box 8314
Boston, Massachusetts 02266
 
LEGAL COUNSEL 
Ropes & Gray 
One International Place 
Boston, Massachusetts 02110
 
INDEPENDENT ACCOUNTANTS 
Coopers & Lybrand L.L.P. 
One Post Office Square 
Boston, Massachusetts 02109
<PAGE>
 
                           -----------------------
                           LOOMIS SAYLES FUNDS (TM)
                           ======================= 

                                     The Power of A Passion.(TM)

 
      EQUITY FUNDS INSTITUTIONAL CLASS
 
 
 
      PROSPECTUS
   
      APRIL 1, 1997     
<PAGE>
 
                           -----------------------
                           LOOMIS SAYLES FUNDS (TM)
                           =======================

                                     The Power of A Passion.(TM)

 One Financial Center . Boston, Massachusetts 02111 . (617) 482-2450
 
THE LOOMIS SAYLES FUNDS--EQUITY FUNDS
 
 INSTITUTIONAL CLASS SHARES OF:
 
    LOOMIS SAYLES CORE VALUE FUND (FORMERLY, LOOMIS SAYLES GROWTH & INCOME
      FUND)
    LOOMIS SAYLES GROWTH FUND
    LOOMIS SAYLES INTERNATIONAL EQUITY FUND
    LOOMIS SAYLES MID-CAP GROWTH FUND
    LOOMIS SAYLES MID-CAP VALUE FUND
       
    LOOMIS SAYLES SMALL CAP GROWTH FUND
    LOOMIS SAYLES SMALL CAP VALUE FUND (FORMERLY, LOOMIS SAYLES SMALL CAP
      FUND)     
    LOOMIS SAYLES STRATEGIC VALUE FUND
    LOOMIS SAYLES WORLDWIDE FUND
 
<PAGE>

                                                                  
PROSPECTUS                                                   APRIL 1, 1997     
                                                                               
THE LOOMIS SAYLES FUNDS--EQUITY FUNDS
     
  Loomis Sayles Core Value Fund, (formerly, Loomis Sayles Growth & Income
Fund) Loomis Sayles Growth Fund, Loomis Sayles International Equity Fund, Loo-
mis Sayles Mid-Cap Growth Fund, Loomis Sayles Mid-Cap Value Fund, Loomis
Sayles Small Cap Growth Fund, Loomis Sayles Small Cap Value Fund (formerly,
Loomis Sayles Small Cap Fund), Loomis Sayles Strategic Value Fund, and Loomis
Sayles Worldwide Fund (the "Funds" and each a "Fund"), each a series of Loomis
Sayles Funds, are separately managed, no-load mutual funds and each Fund has
its own investment objective and policies. Loomis, Sayles & Company, L.P.
("Loomis Sayles") is the investment adviser of each Fund.     
     
  The Funds offer two classes of shares: an Institutional Class that is de-
scribed in this Prospectus and a Retail Class, with a lower minimum investment
for certain categories of investors and bearing higher expenses, that is de-
scribed in a separate prospectus. This Prospectus concisely describes the in-
formation that an investor should know before investing in the Institutional
Class shares of any Fund. Please read it carefully and keep it for future ref-
erence. A Statement of Additional Information dated April 1, 1997, is avail-
able free of charge; write to Loomis Sayles Distributors, L.P. (the "Distribu-
tor"), One Financial Center, Boston, Massachusetts 02111 or telephone 800-633-
3330. The Statement of Additional Information, which contains more detailed
information about the Funds, has been filed with the Securities and Exchange
Commission (the "SEC") and is incorporated by reference into this Prospectus.
To obtain more information about the Retail Class of shares, please call the
Distributor toll-free at 800-633-3330 or contact your financial intermediary.
      
  For information about:                    For all other information about
   .  Establishing an account               the Funds:
   .  Account procedures and status         CALL 800-633-3330
   .  Exchanges
   .  Shareholder services
  CALL 800-626-9390
 
THESE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE SECURITIES AND
EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION NOR HAS THE SECURITIES
AND EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION PASSED UPON THE
ACCURACY OR ADEQUACY OF THIS PROSPECTUS. ANY REPRESENTATION TO THE CONTRARY IS
A CRIMINAL OFFENSE.
 
 
                                       1
<PAGE>
 
                               TABLE OF CONTENTS
 
<TABLE>    
<CAPTION>
                                                                           PAGE
                                                                           ----
<S>                                                                        <C>
SUMMARY OF EXPENSES.......................................................   3
FINANCIAL HIGHLIGHTS......................................................   5
THE TRUST.................................................................  10
INVESTMENT OBJECTIVES AND POLICIES........................................  11
MORE INFORMATION ABOUT THE FUNDS' INVESTMENTS AND RISK CONSIDERATIONS.....  13
THE FUNDS' INVESTMENT ADVISER.............................................  19
FUND EXPENSES.............................................................  21
PORTFOLIO TRANSACTIONS....................................................  22
HOW TO PURCHASE SHARES....................................................  22
SHAREHOLDER SERVICES......................................................  25
HOW TO REDEEM SHARES......................................................  25
CALCULATION OF PERFORMANCE INFORMATION....................................  27
DIVIDENDS, CAPITAL GAIN DISTRIBUTIONS AND TAXES...........................  27
</TABLE>     
 
                                       2
<PAGE>
 
                              SUMMARY OF EXPENSES
     
  The following information is provided as an aid in understanding the various
expenses that an investor in a Fund will bear indirectly. Except in the case
of the Mid-Cap Growth, Mid-Cap Value, Small Cap Growth, Strategic Value, and
Worldwide Funds, the information is based on expenses for the Funds' fiscal
year ended December 31, 1996. The Worldwide Fund did not commence operations
until May 1, 1996 and the Mid-Cap Growth, Mid-Cap Value, Small Cap Growth, and
Strategic Value Funds did not commence investment operations until January 2,
1997. The information about each shown below is based on projected expenses
for the 1997 fiscal year. The information below should not be considered a
representation of past or future expenses, as actual expenses may be greater
or less than those shown. Also, the 5% annual return assumed in the Example
should not be considered a representation of investment performance, as actual
performance will vary.     
 
<TABLE>    
<CAPTION>
                           CORE                INTERNATIONAL MID-CAP    MID-CAP
                           VALUE     GROWTH       EQUITY     GROWTH      VALUE
                           FUND       FUND         FUND       FUND       FUND
                           -----     ------    ------------- -------    -------
<S>                        <C>       <C>       <C>           <C>        <C>
Shareholder Transaction
 Expenses:
 Maximum Sales Load
  Imposed on Purchases (as
  % of offering price).... none       none         none       none       none
 Maximum Sales Load
  Imposed on Reinvested
  Dividends (as % of
  offering price)......... none       none         none       none       none
 Maximum Deferred Sales
  Load (as % of original
  purchase price or
  redemption proceeds).... none       none         none       none       none
 Redemption Fees/1/....... none       none         none       none       none
 Exchange Fees............ none       none         none       none       none
Annual Operating Expenses
 (as a percentage of net
 assets):
 Management Fees..........  .50%/2/    .50%/2/      .75%/2/    .75%       .75%
 12b-1 Fees............... none       none         none       none       none
 Other Operating Expenses
  (after expense
  reimbursements where
  indicated)..............  .35%/3/    .35%         .25%/3/    .25%/4/    .25%/4/
 Total Operating Expenses
  (after expense
  reimbursements where
  indicated)..............  .85%/3/    .85%        1.00%/3/   1.00%/4/   1.00%/4/
Example/5/:
An investor would pay the
 following expenses on a
 $1,000 investment
 assuming a 5% annual
 return (with or without a
 redemption at the end of
 each time period):
 One Year................. $  9       $  9         $ 10       $ 10       $ 10
 Three Years.............. $ 27       $ 27         $ 32       $ 32       $ 32
 Five Years............... $ 47       $ 47         $ 55
 Ten Years................ $105       $105         $122
</TABLE>     
 
                                       3
<PAGE>
 
<TABLE>    
<CAPTION>
                                       SMALL       SMALL    STRATEGIC
                                     CAP GROWTH  CAP VALUE    VALUE    WORLDWIDE
                                        FUND       FUND       FUND       FUND
                                     ----------  ---------  ---------  ---------
<S>                                  <C>         <C>        <C>        <C>
Shareholder Transaction Expenses:
 Maximum Sales Load Imposed on
  Purchases
  (as % of offering price)..........    none       none        none       none
 Maximum Sales Load Imposed on
  Reinvested Dividends (as % of
  offering price)...................    none       none        none       none
 Maximum Deferred Sales Load (as %
  of original purchase price or
  redemption proceeds)..............    none       none        none       none
 Redemption Fees/1/.................    none       none        none       none
 Exchange Fees......................    none       none        none       none
Annual Operating Expenses (as a
 percentage of
 net assets):
 Management Fees....................    .75%       .75%/2/     .50%       .75%
 12b-1 Fees.........................    none       none        none       none
 Other Operating Expenses (after
  expense reimbursements where
  indicated)........................    .25%/4/    .19%        .50%/4/    .25%/4/
 Total Operating Expenses (after
  expense reimbursements where
  indicated)........................   1.00%/4/    .94%       1.00%/4/   1.00%/4/
Example/5/:
An investor would pay the following
 expenses on a $1,000 investment
 assuming a 5% annual return (with
 or without a redemption at the end
 of each time period):
 One Year...........................   $  10       $ 10       $  10      $  10
 Three Years........................   $  32       $ 30       $  32      $  32
 Five Years.........................               $ 52
 Ten Years..........................               $115
</TABLE>     
- -----------
    
/1/ A $5 charge applies to any wire transfer of redemption proceeds from any
    Fund.     
    
/2/ The management fees shown have been restated to reflect a reduction
    effective January 1, 1997 in the management fees payable to Loomis Sayles.
    Actual management fees and Total Operating Expenses for the year ended
    December 31, 1996 were 0.75% and 1.13%, respectively, for the Core Value
    Fund, 0.75% and 1.10%, respectively, for the Growth Fund, 1.00% and 1.42%,
    respectively, for the International Equity Fund and 1.00% and 1.19%,
    respectively, for the Small Cap Value Fund.     
    
/3/ Loomis Sayles has voluntarily agreed, for an indefinite period, to limit the
    Total Operating Expenses of the Core Value and International Equity Funds to
    the percentages of net assets shown in the table, and to limit the Total
    Operating Expenses of the Growth and Small Cap Value Funds to 0.85% and
    1.00% of net assets, respectively. Without this agreement, Other Operating
    Expenses and Total Operating Expenses would have been .38% and .88%,
    respectively, for the Core Value Fund, and .42% and 1.17%, respectively, for
    the International Equity Fund.     
    
/4/ Other Operating Expenses is based on estimated amounts for the 1997 fiscal
    year after giving effect to voluntary expense reimbursements. Loomis Sayles
    has voluntarily agreed, for an indefinite period, to limit these Funds'
    Total Operating Expenses to the percentages of net assets shown in the
    table. Without this agreement, estimated Other Operating Expenses and Total
    Operating Expenses would be 1.24% and 1.99%, respectively, for the Mid-Cap
    Growth Fund, 0.68% and 1.43%, respectively, for the Mid-Cap Value Fund,
    0.36% and 1.11%, respectively, for the Small Cap Growth Fund, 1.00% and
    1.50%, respectively, for the Strategic Value Fund and 1.80% and 2.55%,
    respectively, for the Worldwide Fund.     
    
/5/ Under SEC rules, new funds are required to show expenses for the one- and
    three-year periods only.     
 
 
 
                                       4
<PAGE>
 
                             FINANCIAL HIGHLIGHTS
     (FOR AN INSTITUTIONAL CLASS SHARE OF EACH INDICATED FUND OUTSTANDING
                       THROUGHOUT THE INDICATED PERIODS)

     
  The following information is included in financial statements of the Funds
that have been audited by Coopers & Lybrand L.L.P., independent accountants.
The following information should be read in conjunction with the financial
statements and the notes thereto contained in the Funds' 1996 Annual report,
which is incorporated by reference in this Prospectus and the Statement of
Additional Information. The Mid-Cap Growth, Mid-Cap Value, Small Cap Growth
and Strategic Value Funds had not commenced investment operations as of
December 31, 1996.     
 
<TABLE>    
<CAPTION>
                                          CORE VALUE FUND
                          ----------------------------------------------------
                                                                       MAY 13*
                                    YEAR ENDED DEC. 31,                  TO
                          -------------------------------------------  DEC. 31
                           1996     1995     1994     1993     1992     1991
                          -------  -------  -------  -------  -------  -------
<S>                       <C>      <C>      <C>      <C>      <C>      <C>
Net asset value,
 beginning of period....  $ 14.57  $ 11.80  $ 12.49  $ 11.53  $ 10.54  $10.00
                          -------  -------  -------  -------  -------  ------
Income from investment
 operations--
 Net investment income
 (loss).................     0.22     0.23     0.15     0.13     0.13    0.12
 Net realized and
  unrealized gain (loss)
  on investments........     2.83     3.93    (0.26)    1.24     1.36    0.59
                          -------  -------  -------  -------  -------  ------
 Total from investment
  operations............     3.05     4.16    (0.11)    1.37     1.49    0.71
                          -------  -------  -------  -------  -------  ------
Less distributions--
 Dividends from net
 investment  income.....    (0.22)   (0.23)   (0.15)   (0.12)   (0.13)  (0.12)
 Distributions from net
  realized capital
  gains.................    (1.80)   (1.16)   (0.43)   (0.29)   (0.37)  (0.05)
                          -------  -------  -------  -------  -------  ------
 Total distributions....    (2.02)   (1.39)   (0.58)   (0.41)   (0.50)  (0.17)
                          -------  -------  -------  -------  -------  ------
Net asset value, end of
 period.................  $ 15.60  $ 14.57  $ 11.80  $ 12.49  $ 11.53  $10.54
                          =======  =======  =======  =======  =======  ======
Total return (%)........     21.2     35.2     (0.9)    11.9     14.1     7.2
Net assets, end of
 period (000)...........  $43,715  $36,465  $25,946  $20,657  $12,279  $7,689
Ratio of operating
 expenses to average net
 assets(%)..............     1.13     1.20     1.33     1.50     1.50    1.50**
Ratio of net investment
 income to average net
 assets(%)..............     1.44     1.61     1.28     1.23     1.42    2.09**
Portfolio turnover
 rate(%)................       58       60       48       53       67      27**
Average commission
 rate***................  $0.0583      --       --       --       --      --
Without giving effect to
 voluntary expense
 limitations:
 The ratios of operating
  expenses to average
  net assets would have
  been(%)...............     1.13     1.20     1.33     1.56     2.19    2.59**
 Net investment income
  per share would have
  been..................  $  0.22  $  0.23  $  0.15  $  0.12  $  0.07  $ 0.06
</TABLE>     
- -----------
    
  * Commencement of investment operations.     
 ** Computed on an annualized basis.
*** For fiscal periods beginning on or after September 1, 1995, a fund is
    required to disclose its average commission rate per share for trades upon
    which commissions are charged. This rate generally does not reflect mark-
    ups, mark-downs, or spreads on shares traded on a principal basis.
 
                                       5
<PAGE>
 
<TABLE>    
<CAPTION>
                                             GROWTH FUND
                          ------------------------------------------------------
                                                                        MAY 16*
                                    YEAR ENDED DEC. 31,                    TO
                          --------------------------------------------  DEC. 31,
                            1996     1995     1994     1993     1992      1991
                          --------  -------  -------  -------  -------  --------
<S>                       <C>       <C>      <C>      <C>      <C>      <C>
Net asset value,
 beginning of period....  $  15.27  $ 12.50  $ 13.02  $ 12.46  $ 12.01  $ 10.00
                          --------  -------  -------  -------  -------  -------
Income from investment
 operations--
 Net investment income
  (loss)................     (0.07)   (0.00)   (0.02)    0.00    (0.04)    0.00
 Net realized and
  unrealized gain (loss)
  on investments........      3.08     3.86    (0.45)    1.16     0.49     2.45
                          --------  -------  -------  -------  -------  -------
 Total from investment
  operations............      3.01     3.86    (0.47)    1.16     0.45     2.45
                          --------  -------  -------  -------  -------  -------
Less distributions--
 Distributions from net
  realized
  capital gains.........     (4.84)   (1.09)   (0.04)   (0.60)    0.00    (0.44)
 Distributions from
  capital...............      0.00     0.00    (0.01)    0.00     0.00     0.00
                          --------  -------  -------  -------  -------  -------
 Total distributions....     (4.84)   (1.09)   (0.05)   (0.60)    0.00    (0.44)
                          --------  -------  -------  -------  -------  -------
Net asset value, end of
 period.................  $  13.44  $ 15.27  $ 12.50  $ 13.02  $ 12.46  $ 12.01
                          ========  =======  =======  =======  =======  =======
Total return (%)........      19.9     30.9     (3.7)     9.3      3.8     24.5
Net assets, end of
 period (000)...........  $ 39,497  $45,011  $36,580  $32,385  $24,451  $16,105
Ratio of operating
 expenses to average
 net assets (%).........      1.10     1.08     1.16     1.20     1.50   1.50**
Ratio of net investment
 income to average
 net assets (%).........     (0.47)   (0.29)   (0.14)   (0.17)   (0.45)  0.01**
Portfolio turnover rate
 (%)....................        99       48       46       64       98     69**
Average commission
 rate***................  $ 0.0600      --       --       --       --       --
Without giving effect to
 voluntary expense
 limitations:
 The ratios of operating
  expenses to average
  net assets would have
  been (%)..............      1.10     1.08     1.16     1.20     1.51   1.66**
 Net investment income
  per share would
  have been.............  $  (0.07) $  0.00  $ (0.02) $  0.00  $ (0.04) $ (0.01)
</TABLE>     
- -----------
    
  * Commencement of investment operations.     
 ** Computed on an annualized basis.
*** For fiscal periods beginning on or after September 1, 1995, a fund is
    required to disclose its average commission rate per share for trades upon
    which commissions are charged. This rate generally does not reflect mark-
    ups, mark-downs, or spreads on shares traded on a principal basis.
 
                                       6
<PAGE>
 
<TABLE>    
<CAPTION>
                                      INTERNATIONAL EQUITY FUND
                          ------------------------------------------------------
                                                                        MAY 10*
                                    YEAR ENDED DEC. 31,                    TO
                          --------------------------------------------  DEC. 31,
                            1996     1995     1994     1993     1992      1991
                          --------  -------  -------  -------  -------  --------
<S>                       <C>       <C>      <C>      <C>      <C>      <C>
Net asset value,
 beginning of period....  $  11.65  $ 11.61  $ 12.90     9.64  $ 10.27   $10.00
                          --------  -------  -------  -------  -------   ------
Income from investment
 operations--
Net investment income
 (loss).................      0.12     0.14     0.15     0.11     0.10     0.08
Net realized and
 unrealized gain (loss)
 on investments.........      2.01     0.87    (0.38)    3.61    (0.62)    0.29
                          --------  -------  -------  -------  -------   ------
 Total from investment
  operations............      2.13     1.01    (0.23)    3.72    (0.52)    0.37
                          --------  -------  -------  -------  -------   ------
Less distributions--
 Dividends from net
  investment income.....     (0.09)   (0.14)   (0.14)   (0.10)   (0.10)   (0.08)
 Distributions from net
  realized capital
  gains.................     (0.53)   (0.83)   (0.92)   (0.36)   (0.01)    0.00
 Distributions from
  capital...............      0.00     0.00     0.00     0.00     0.00    (0.02)
                          --------  -------  -------  -------  -------   ------
 Total distributions....     (0.62)   (0.97)   (1.06)   (0.46)   (0.11)   (0.10)
                          --------  -------  -------  -------  -------   ------
 Net asset value, end of
  period................  $  13.16  $ 11.65  $ 11.61  $ 12.90     9.64   $10.27
                          ========  =======  =======  =======  =======   ======
Total return (%)........      18.3      8.7     (1.8)    38.5     (5.1)     3.7
Net assets, end of
 period (000)...........  $ 90,662  $79,488  $73,189  $56,560  $14,937   $6,916
Ratio of operating
 expenses to average net
 assets (%).............      1.42     1.45     1.46     1.50     1.50     1.50**
Ratio of net investment
 income to average net
 assets (%).............      0.96     1.16     1.30     1.20     1.64     1.55**
Portfolio turnover rate
 (%)....................       151      133      116      128      101      109**
Average commission
 rate***................  $ 0.0013      --       --       --       --       --
Without giving effect to
 voluntary expense
 limitations:
 The ratios of operating
  expenses to average
  net assets would have
  been (%)..............      1.42     1.45     1.46     1.72     2.77     3.66**
 Net investment income
  per share would have
  been..................  $   0.12  $  0.14  $  0.15  $  0.09  $  0.02   $(0.03)
</TABLE>     
- -----------
    
  * Commencement of investment operations.     
 ** Computed on an annualized basis.
   
*** For fiscal periods beginning on or after September 1, 1995, a fund is
    required to disclose its average commission rate per share for trades upon
    which commissions are charged. This rate generally does not reflect mark-
    ups, mark-downs, or spreads on shares traded on a principal basis.
    Generally, non-U.S. commissions are lower than U.S. commissions when
    expressed as cents per share but higher when expressed as a percentage of
    transactions because of the lower per-share prices of many non-U.S.
    securities.     
 
 
                                       7
<PAGE>
 
<TABLE>    
<CAPTION>
                                        SMALL CAP VALUE FUND
                          ------------------------------------------------------
                                                                        MAY 13*
                                    YEAR ENDED DEC. 31,                    TO
                          --------------------------------------------  DEC. 31,
                            1996     1995     1994     1993     1992      1991
                          --------  -------  -------  -------  -------  --------
<S>                       <C>       <C>      <C>      <C>      <C>      <C>
Net asset value,
 beginning of period....  $  15.33  $ 12.86  $ 14.13  $ 12.88  $ 12.49  $ 10.00
                          --------  -------  -------  -------  -------  -------
Income from investment
 operations--
 Net investment income
  (loss)................      0.11     0.04    (0.04)    0.00    (0.06)   (0.01)
 Net realized and
  unrealized gain (loss)
  on investments........      4.47     4.06    (1.12)    3.15     1.67     3.03
                          --------  -------  -------  -------  -------  -------
 Total from investment
  operations............      4.58     4.10    (1.16)    3.15     1.61     3.02
                          --------  -------  -------  -------  -------  -------
Less distributions--
 Dividends from net
  investment income.....     (0.11)   (0.04)    0.00     0.00     0.00     0.00
 Distributions from net
  realized capital
  gains.................     (2.41)   (1.59)   (0.11)   (1.90)   (1.22)   (0.53)
                          --------  -------  -------  -------  -------  -------
 Total distributions....     (2.52)   (1.63)   (0.11)   (1.90)   (1.22)   (0.53)
                          --------  -------  -------  -------  -------  -------
Net asset value, end of
 period.................  $  17.39  $ 15.33  $ 12.86  $ 14.13  $ 12.88  $ 12.49
                          ========  =======  =======  =======  =======  =======
 Total return (%).......      30.4     32.1     (8.2)    24.7     13.1     30.5
Net assets, end of
 period (000)...........  $163,625  $90,455  $73,126  $67,553  $39,244  $14,581
Ratio of operating
 expenses to average net
 assets (%).............      1.19     1.25     1.27     1.35     1.50     1.50**
Ratio of net investment
 income to average net
 assets (%).............      0.80     0.29    (0.30)   (0.38)   (0.79)   (0.19)**
Portfolio turnover rate
 (%)....................        73      155       87      106      109       56**
Average commission rate
 ***....................  $ 0.0567      --       --       --       --       --
Without giving effect to
 voluntary expense
 limitations:
 The ratios of operating
  expenses to average
  net assets would have
  been (%)..............      1.19     1.25     1.27     1.35     1.66     2.43**
 Net investment income
  per share would have
  been..................  $   0.11  $  0.04  $ (0.04) $  0.00  $ (0.07) $ (0.06)
</TABLE>     
- -----------
    
  * Commencement of investment operations.     
 ** Computed on an annualized basis.
   
*** For fiscal periods beginning on or after September 1, 1995, a fund is
    required to disclose its average commission rate per share for trades upon
    which commissions are charged. This rate generally does not reflect mark-
    ups, mark-downs, or spreads on shares traded on a principal basis.     
 
 
                                       8
<PAGE>
 
<TABLE>    
<CAPTION>
                                                                  WORLDWIDE FUND
                                                                  --------------
                                                                      MAY 1*
                                                                        TO
                                                                     DEC. 31,
                                                                       1996
                                                                  --------------
<S>                                                               <C>
Net asset value, beginning of period............................     $  10.00
                                                                     --------
Income from investment operations--
 Net investment income (loss)...................................         0.30
 Net realized and unrealized gain (loss) on investments.........         0.63
                                                                     --------
 Total from investment operations...............................         0.93
                                                                     --------
Less distributions--
 Dividends from net investment income...........................        (0.30)
 Distributions from net realized capital gains..................         0.00
                                                                     --------
 Total distributions............................................        (0.30)
                                                                     --------
Net asset value, end of period..................................     $  10.63
                                                                     ========
 Total return (%)...............................................          9.2
Net assets, end of period (000).................................     $  5,189
Ratio of operating expenses to average net assets (%)...........         1.00**
Ratio of net investment income to average net assets (%)........         4.62**
Portfolio turnover rate (%).....................................           76**
Average commission rate ***.....................................     $ 0.0278
Without giving effect to voluntary expense limitations:
 The ratios of operating expenses to average net assets would
  have
  been (%)......................................................         3.72**
 Net investment income per share would have been................     $   0.13
</TABLE>     
- -----------
    
  * Commencement of investment operations.      
 ** Computed on an annualized basis.
    
*** For fiscal periods beginning on or after September 1, 1995, a fund is
    required to disclose its average commission rate per share for trades upon
    which commissions are charged. This rate generally does not reflect mark-
    ups, mark-downs, or spreads on shares traded on a principal basis.
    Generally, non-U.S. commissions are lower than U.S. commissions when
    expressed as cents per share but higher when expressed as a percentage of
    transactions because of the lower per-share prices of many non-U.S.
    securities.      
     
NOTE: Further information about each Fund's performance is contained in the
      Funds' annual report to shareholders, which may be obtained without
      charge.      
 
                                       9
<PAGE>
 
                                   THE TRUST
 
  Each Fund is a series of Loomis Sayles Funds (the "Trust"). The Trust is a
diversified open-end management investment company organized as a
Massachusetts business trust on February 20, 1991. The Trust is authorized to
issue an unlimited number of full and fractional shares of beneficial interest
in multiple series. Shares are freely transferable and entitle shareholders to
receive dividends as determined by the Trust's board of trustees and to cast a
vote for each share held at shareholder meetings. The Trust does not generally
hold shareholder meetings and will do so only when required by law.
Shareholders may call meetings to consider removal of the Trust's trustees.
 
 
                      INVESTMENT OBJECTIVES AND POLICIES
 
LOOMIS SAYLES CORE VALUE FUND
 
  The Fund's investment objective is long-term growth of capital and income.
     
  The Fund seeks to achieve its objective by investing substantially all of
its assets in common stocks or their equivalent that Loomis Sayles considers
to be undervalued in relation to the issuer's earnings, dividends, assets and
growth prospects. The Fund may invest up to 20% of its assets in securities of
foreign issuers. The Fund may also engage in foreign currency hedging
transactions and Rule 144A securities.     
 
LOOMIS SAYLES GROWTH FUND
 
  The Fund's investment objective is long-term growth of capital.
     
  The Fund seeks to achieve its objective by investing substantially all of
its assets in common stocks or their equivalent. Investments are selected
based on their growth potential; current income is not a consideration. The
Fund may invest in companies with relatively small market capitalization, as
well as in larger companies. The Fund may invest up to 20% of its assets in
securities of foreign issuers. The Fund may also engage in foreign currency
hedging transactions and Rule 144A securities.      
 
LOOMIS SAYLES INTERNATIONAL EQUITY FUND
 
  The Fund's investment objective is high total investment return through a
combination of capital appreciation and current income.
     
  The Fund seeks to achieve its objective by investing primarily in equity
securities of companies organized or headquartered outside the United States.
Under normal conditions the Fund will invest at least 65% of its total assets
in equity securities of issuers from at least three countries outside the
United      
 
                                      10
<PAGE>
 
    
States. For temporary defensive purposes, the Fund may invest as much as 100%
of its assets in issuers from one or two countries, which may include the
United States. The Fund may also engage in foreign currency hedging
transactions, options transactions, and Rule 144A securities.      
 
LOOMIS SAYLES MID-CAP GROWTH FUND
 
  The Fund's investment objective is long-term capital growth from investments
in common stocks or their equivalent.
     
  The Fund seeks to achieve its objective by investing, under normal market
conditions, at least 65% of its total assets in equity securities of companies
with a market that falls within the capitalization range of companies included
in the Standard & Poor's Mid-Cap 400 Index. Current income is not a
consideration in selecting the Fund's investments. The Fund may invest any
portion of its assets in securities of Canadian issuers and up to 20% of its
assets in the securities of issuers headquartered outside the United States or
Canada. The Fund may also engage in foreign currency hedging transactions,
options and futures transactions, securities lending, and Rule 144A
securities.      
 
LOOMIS SAYLES MID-CAP VALUE FUND
 
  The Fund's objective is long-term capital growth from investments in common
stocks or their equivalent.
     
  The Fund seeks to achieve its objective by investing, under normal market
conditions, at least 65% of its total assets in equity securities of companies
with a market that falls within the capitalization range of companies included
in the Standard & Poor's Mid-Cap 400 Index. Loomis Sayles seeks to build a
core portfolio of equity securities that it believes to be undervalued by the
market in relation to the issuers' earnings, dividends, assets and growth
prospects and that has a smaller emphasis on special situations and
turnarounds (companies that have experienced significant business problems but
that Loomis Sayles believes have favorable prospects for recovery). Current
income is not a consideration in selecting the Fund's investments. The Fund
may invest any portion of its assets in securities of Canadian issuers and up
to 20% of its assets in the securities of issuers headquartered outside the
United States or Canada. The Fund may also engage in foreign currency hedging
transactions, options and futures transactions, securities lending, and Rule
144A securities.      
 
LOOMIS SAYLES SMALL CAP GROWTH FUND
 
  The Fund's investment objective is long-term capital growth from investments
in common stocks or their equivalent.
 
                                      11
<PAGE>
 
    
  The Fund seeks to achieve its objective by investing primarily in equity
securities of small, rapidly growing companies that Loomis Sayles believes
have the potential for accelerating earnings growth and rising profit margins.
The Fund will normally invest at least 65% of its total assets in equity
securities of companies with market capitalization of less than $1 billion and
may invest up to 35% of its total assets in larger companies. Loomis Sayles
seeks companies that have distinctive products, technologies, or services;
dynamic earnings growth; prospects for a high level of profitability; and
outstanding management. Current income is not a consideration in selecting the
Fund's investments. The Fund may invest any portion of its assets in
securities of Canadian issuers and up to 20% of its assets in the securities
of issuers headquartered outside the United States or Canada. The Fund may
also engage in foreign currency hedging transactions, options and futures
transactions, securities lending, and Rule 144A securities.      
 
LOOMIS SAYLES SMALL CAP VALUE FUND
 
  The Fund's investment objective is long-term capital growth from investments
in common stocks or their equivalent.
     
  The Fund seeks to achieve its objective by investing primarily in equity
securities of small capitalization companies with good earnings growth
potential that Loomis Sayles believes are undervalued by the market. The Fund
will normally invest at least 65% of its total assets in companies with market
capitalization of less than $1 billion and may invest up to 35% of its assets
in larger companies. Loomis Sayles seeks to build a core small capitalization
portfolio of stocks of solid companies with reasonable growth prospects and
that are attractively priced in relation to the companies' earnings with a
smaller emphasis on special situations and turnarounds (companies that have
experienced significant business problems but which Loomis Sayles believes
have favorable prospects for recovery), as well as unrecognized stocks.
Current income is not a consideration in selecting the Fund's investments. The
Fund may invest up to 20% of its assets in securities of foreign issuers. The
Fund may also engage in foreign currency hedging transactions and Rule 144A
securities.      
 
 
LOOMIS SAYLES STRATEGIC VALUE FUND
 
  The Fund's investment objective is long-term capital growth from investments
in common stocks or their equivalent.
     
  The Fund seeks to achieve its objective by investing substantially all of
its assets in equity securities that Loomis Sayles considers to be undervalued
by the markets. Stocks are selected based on a combination of quantitative
factors including historical, relative price-earnings ratios; price-earnings
ratios relative to growth rates; relative fundamentals and price momentum; and
qualitative      
 
                                      12
<PAGE>
 
    
factors including the quality of management, position in the industry, debt
and balance sheet restructuring and product cycles. The Fund's strategy is to
have a relatively concentrated portfolio normally consisting of approximately
35-40 securities that Loomis Sayles considers best positioned to perform in
the current and future environments. The Fund may invest any portion of its
assets in the securities of Canadian issuers and up to 20% of its assets in
securities of issuers headquartered outside the United States or Canada. The
Fund may also engage in foreign currency hedging transactions, options and
futures transactions, securities lending, and Rule 144A securities.      
 
LOOMIS SAYLES WORLDWIDE FUND
 
  The Fund's investment objective is high total investment return through a
combination of capital appreciation and current income.
     
  The Fund seeks to achieve its objective by investing in U.S. and foreign
equity and debt securities. The allocation of the Fund's assets among the four
sectors of domestic equities, international equities, domestic bonds and
international bonds will be made by Loomis Sayles' Global Asset Allocation
group. The Fund will normally invest its assets in securities of issuers from
at least three countries, one of which may be the United States. The Fund may
also invest in collateralized mortgage obligations, zero coupon securities,
when-issued securities and Rule 144A securities. The Fund may engage in
foreign currency hedging transactions and options and forward contract
transactions.      
 
ALL FUNDS
 
  For temporary defensive purposes, each Fund may invest any portion of its
assets in fixed income securities, cash and any other securities deemed
appropriate by Loomis Sayles.
 
  Except for each Fund's investment objective, and any investment policies
that are identified as "fundamental," all of the investment policies of each
Fund may be changed without a vote of Fund shareholders.
 
     MORE INFORMATION ABOUT THE FUNDS' INVESTMENTS AND RISK CONSIDERATIONS
 
COMMON STOCKS AND OTHER EQUITY SECURITIES
     
  Common stocks and similar equity securities, such as warrants and
convertibles, are volatile and more risky than some other forms of investment.
The value of an investment in a Fund that invests in equity securities may
sometimes decrease. Equity securities of companies with relatively small
market capitalization may be more volatile than the securities of larger, more
established companies and than the broad equity market indexes.      
 
                                      13
<PAGE>
 
DEBT AND OTHER FIXED INCOME SECURITIES
     
  The Worldwide Fund may invest in fixed income securities of any maturity.
Fixed income securities pay a specified rate of interest or dividends, or a
rate that is adjusted periodically by reference to some specified index or
market rate. Fixed income securities include securities issued by federal,
state, local and foreign governments and related agencies, and by a wide range
of private issuers. Because interest rates vary, it is impossible to predict
yield of a Fund that invests in fixed income securities for any particular
period. The net asset value of such a Fund's shares will vary as a result of
changes in the value of the securities in the Fund's portfolio.      
 
  Fixed income securities are subject to market and credit risk. Market risk
relates to changes in a security's value as a result of changes in interest
rates generally. In general, the values of fixed income securities increase
when prevailing interest rates fall and decrease when interest rates rise.
Credit risk relates to the ability of the issuer to make payments of principal
and interest.
 
ZERO COUPON SECURITIES
 
  The Worldwide Fund may invest in "zero coupon" fixed income securities.
These securities accrue interest at a specified rate, but do not pay interest
in cash on a current basis. A Fund investing in zero coupon securities is
required to distribute the income on these securities to Fund shareholders as
the income accrues, even though the Fund is not receiving the income in cash
on a current basis. Thus the Fund may have to sell other investments to obtain
cash to make income distributions. The market value of zero coupon securities
is often more volatile than that of non-zero coupon fixed income securities of
comparable quality and maturity.
 
COLLATERALIZED MORTGAGE OBLIGATIONS
     
  The Worldwide Fund may invest in collateralized mortgage obligations
("CMOs"). A CMO is a security backed by a portfolio of mortgages or mortgage-
backed securities held under an indenture. CMOs may be issued either by U.S.
Government instrumentalities or by non-governmental entities. The issuer's
obligation to make interest and principal payments is secured by the
underlying portfolio of mortgages or mortgage-backed securities. CMOs are
issued with a number of classes or series which have different maturities and
which may represent interests in some or all of the interest or principal
payments on the underlying collateral or a combination thereof. CMOs of
different classes are generally retired in sequence as the underlying mortgage
loans in the mortgage pool are repaid. In the event of sufficient early
prepayments on such mortgages, the class or series of CMOs first to mature
generally will be retired prior to its maturity. As with other mortgage-backed
securities, the early       
 
                                      14
<PAGE>
 
    
retirement of a particular class or series of CMOs held by a Fund could
involve the loss of any premium the Fund paid when it acquired the investment
and could result in the Fund's reinvesting the proceeds at a lower interest
rate than the retired CMO paid. Because of the early retirement feature, CMOs
may be more volatile than many other fixed-income investments.      
 
WHEN-ISSUED SECURITIES
 
  Each Fund may purchase securities on a "when-issued" basis. This means that
the Fund will enter into a commitment to buy the security before the security
has been issued. The Fund's payment obligation and the interest rate on the
security are determined when the Fund enters into the commitment. The security
is typically delivered to the Fund 15 to 120 days later. No interest accrues
on the security between the time the Fund enters into the commitment and the
time the security is delivered. If the value of the security being purchased
falls between the time a Fund commits to buy it and the payment date, the Fund
may sustain a loss. The risk of this loss is in addition to the Fund's risk of
loss on the securities actually in its portfolio at the time. In addition,
when the Fund buys a security on a when-issued basis, it is subject to the
risk that market rates of interest will increase before the time the security
is delivered, with the result that the yield on the security delivered to the
Fund may be lower than the yield available on other, comparable securities at
the time of delivery. If a Fund has outstanding obligations to buy when-issued
securities, it will maintain liquid assets in a segregated account at its
custodian bank in an amount sufficient to satisfy these obligations.
 
RULE 144A SECURITIES
 
  Each Fund may invest in Rule 144A securities, which are privately offered
securities that can be resold only to certain qualified institutional buyers.
Rule 144A securities are treated as illiquid, unless Loomis Sayles has
determined, under guidelines established by the Trust's trustees, that the
particular issue of Rule 144A securities is liquid.
 
FOREIGN SECURITIES
     
  Each Fund may invest in securities of issuers organized or headquartered
outside the United States ("foreign securities"). Each of the Core Value,
Growth and Small Cap Value Funds will not purchase a foreign security if, as a
result, the Fund's holdings of foreign securities would exceed 20% of the
Fund's assets. Each of the Mid-Cap Growth, Mid-Cap Value, Small Cap Growth and
Strategic Value Funds may each invest any portion of its assets in securities
of Canadian issuers, but will not purchase foreign securities other than those
of Canadian issuers if, as a result, such Fund's holding of non-U.S. and non-
Canadian securities would exceed 20% of the Fund's assets.      
 
                                      15
<PAGE>
 
    
  Although investing in foreign securities may increase a Fund's
diversification and reduce portfolio volatility, foreign securities may
present risks not associated with investments in comparable securities of U.S.
issuers. There may be less information publicly available about a foreign
corporate or governmental issuer than about a U.S. issuer, and foreign
corporate issuers are not generally subject to accounting, auditing and
financial reporting standards and practices comparable to those in the United
States. The securities of some foreign issuers are less liquid and at times
more volatile than securities of comparable U.S. issuers. Foreign brokerage
commissions and securities custody costs are often higher than in the United
States. With respect to certain foreign countries, there is a possibility of
governmental expropriation of assets, confiscatory taxation, political or
financial instability and diplomatic developments that could affect the value
of investments in those countries. A Fund's receipt of interest on foreign
government securities may depend on the availability of tax or other revenues
to satisfy the issuer's obligations.      
 
  A Fund's investments in foreign securities may include investments in
countries whose economies or securities markets are not yet highly developed.
Special considerations associated with these investments (in addition to the
considerations regarding foreign investments generally) may include, among
others, greater political uncertainties, an economy's dependence on revenues
from particular commodities or on international aid or development assistance,
currency transfer restrictions, highly limited numbers of potential buyers for
such securities and delays and disruptions in securities settlement
procedures.
 
  Since most foreign securities are denominated in foreign currencies or
traded primarily in securities markets in which settlements are made in
foreign currencies, the value of these investments and the net investment
income available for distribution to shareholders of a Fund investing in these
securities may be affected favorably or unfavorably by changes in currency
exchange rates or exchange control regulations. Changes in the value relative
to the U.S. dollar of a foreign currency in which a Fund's holdings are
denominated will result in a change in the U.S. dollar value of the Fund's
assets and the Fund's income available for distribution.
 
  In addition, although part of a Fund's income may be received or realized in
foreign currencies, the Fund will be required to compute and distribute its
income in U.S. dollars. Therefore, if the value of a currency relative to the
U.S. dollar declines after the Fund's income has been earned in that currency,
translated into U.S. dollars and declared as a dividend, but before payment of
the dividend, the Fund could be required to liquidate portfolio securities to
pay the dividend. Similarly, if the value of a currency relative to the U.S.
dollar declines between the time the Fund accrues expenses in U.S. dollars and
the time such expenses are paid, the amount of such currency required to be
 
                                      16
<PAGE>
 
converted into U.S. dollars will be greater than the equivalent amount in such
currency of such expenses at the time they were incurred.
 
  In determining whether to invest assets of a Fund in securities of a
particular foreign issuer, Loomis Sayles will consider the likely effects of
foreign taxes on the net yield available to the Fund and its shareholders.
Compliance with foreign tax law may reduce a Fund's net income available for
distribution to shareholders.
 
FOREIGN CURRENCY HEDGING TRANSACTIONS
 
  Each Fund that invests in foreign securities may engage in foreign currency
exchange transactions, in connection with the purchase and sale of foreign
securities, to protect the value of specific portfolio positions or in
anticipation of changes in relative values of currencies in which current or
future Fund portfolio holdings are denominated or quoted. For example, to
protect against a change in the foreign currency exchange rate between the
date on which a Fund contracts to purchase or sell a security and the
settlement date for the purchase or sale, or to "lock in" the equivalent of a
dividend or interest payment in another currency, a Fund might purchase or
sell a foreign currency on a spot (that is, cash) basis at the prevailing spot
rate. If conditions warrant, the Funds may also enter into private contracts
to purchase or sell foreign currencies at a future date ("forward contracts").
The Funds might also purchase exchange-listed and over-the-counter call and
put options on foreign currencies. Over-the-counter currency options are
generally less liquid than exchange-listed options, and will be treated as
illiquid assets. The Funds may not be able to dispose of over-the-counter
options readily.
 
  Foreign currency transactions involve costs and may result in losses. In
addition, each Fund's ability to engage in currency hedging transactions may
be limited by tax considerations.
 
OPTIONS AND FUTURES TRANSACTIONS
 
  The International Equity, Mid-Cap Growth, Mid-Cap Value, Small Cap Growth,
Strategic Value and Worldwide Funds may buy, sell or write options on
securities, securities indexes, currencies or futures contracts. The Mid-Cap
Growth, Mid-Cap Value, Small Cap Growth and Strategic Value Funds may buy and
sell futures contracts on securities, securities indexes or currencies. Each
of these Funds may engage in these transactions either for the purpose of
enhancing investment return, or to hedge against changes in the value of other
assets that the Fund owns or intends to acquire. Options and futures fall into
the broad category of financial instruments known as "derivatives" and involve
special risks. Use of options or futures for other than hedging purposes may
be considered a speculative activity, involving greater risks than are
involved in hedging.
 
                                      17
<PAGE>
 
    
  Options can generally be classified as either "call" or "put" options. There
are two parties to a typical options transaction: the "writer" and the
"buyer." A call option gives the buyer the right to buy a security or other
asset (such as an amount of currency or a futures contract) from, and a put
option gives the buyer the right to sell a security or other asset to, the
option writer at a specified price, on or before a specified date. The buyer
of an option pays a premium when purchasing the option, which reduces the
return on the underlying security or other asset if the option is exercised,
and results in a loss if the option expires unexercised. The writer of an
option receives a premium from writing an option, which may increase its
return if the option expires or is closed out at a profit. If a Fund as the
writer of an option is unable to close out an unexpired option, it must
continue to hold the underlying security or other asset until the option
expires, to "cover" its obligation under the option.      
     
  A futures contract creates an obligation by the seller to deliver and the
buyer to take delivery of the type of instrument or cash at the time and in
the amount specified in the contract. Although many futures contracts call for
the delivery (or acceptance) of the specified instrument, futures are usually
closed out before the settlement date through the purchase (or sale) of a
comparable contract. If the price of the sale of the futures contract by a
Fund exceeds (or is less than) the price of the offsetting purchase, the Fund
will realize a gain (or loss). The value of options purchased or written by a
Fund and futures contracts held by a Fund may fluctuate based on a variety of
market and economic factors. In some cases, the fluctuations may offset (or be
offset by) changes in the value of securities held in a Fund's portfolio. All
transactions in options and futures involve the possible risk of loss to a
Fund of all or a significant part of the value of its investment. In some
cases, the risk of loss may exceed the amount of the Fund's investment. When a
Fund writes a call option or sells a futures contract without holding the
underlying securities, currencies or futures contracts, its potential loss is
unlimited. A Fund will be required, however, to set aside with its custodian
bank liquid assets in amounts sufficient at all times to satisfy its
obligations under options and futures contracts.      
 
  The successful use of options and futures will usually depend on Loomis
Sayles' ability to forecast stock market, currency or other financial market
movements correctly. A Fund's ability to hedge against adverse changes in the
value of securities held in its portfolio through options and futures also
depends on the degree of correlation between the changes in the value of
futures or options positions and changes in the values of the portfolio
securities. The successful use of futures and exchange traded options also
depends on the availability of a liquid secondary market to enable a Fund to
close its positions on a timely basis. There can be no assurance that such a
market will exist at any particular time. In the case of options that are not
traded on an exchange ("over-the-counter" options), a Fund is at risk that the
other party to the transaction
 
                                      18
<PAGE>
 
will default on its obligations, or will not permit the Fund to terminate the
transaction before its scheduled maturity. As a result of these
characteristics, each Fund will treat most over-the-counter options (and the
assets it segregates to cover its obligations thereunder) as illiquid.
 
  The options and futures markets of foreign countries are small compared to
those of the United States and consequently are characterized in most cases by
less liquidity than are the U.S. markets. In addition, foreign markets may be
subject to less detailed reporting requirements and regulatory controls than
U.S. markets. Furthermore, investments in options in foreign markets are
subject to many of the same risks as other foreign investments. See "Foreign
Securities" above.
 
SECURITIES LENDING
 
  The Mid-Cap Growth, Mid-Cap Value, Small Cap Growth and Strategic Value
Funds may each lend its portfolio securities to broker-dealers or other
parties under contracts calling for the deposit by the borrower with the
Fund's custodian of cash collateral equal to at least the market value of the
securities loaned, marked to market on a daily basis. The Fund will continue
to benefit from interest or dividends on the securities loaned and will also
receive interest through investment of the cash collateral in short-term
liquid investments. No loans will be made if, as a result, the aggregate
amount of such loans outstanding at any time would exceed 33 1/3% of the
Fund's total assets (taken at current value). Any voting rights, or rights to
consent, relating to securities loaned pass to the borrower. However, if a
material event affecting the investment occurs, such loans will be called so
that the securities may be voted by the Fund. The Fund pays various fees in
connection with such loans, including shipping fees and reasonable custodial
or placement fees.
 
  Securities loans must be fully collateralized at all times, but involve some
credit risk to the Fund if the borrower defaults on its obligation and the
Fund is delayed or prevented from recovering the collateral.
 
                         THE FUND'S INVESTMENT ADVISER
 
  The Funds' investment adviser is Loomis Sayles, One Financial Center,
Boston, Massachusetts 02111. Founded in 1926, Loomis Sayles is one of the
country's oldest and largest investment firms. Loomis Sayles' general partner
is indirectly owned by New England Investment Companies, L.P., a publicly-
traded limited partnership whose general partner is indirectly owned by
Metropolitan Life Insurance Company.
     
  In addition to selecting and reviewing the Funds' investments, Loomis Sayles
provides executive and other personnel for the management of the Funds. The
Trust's board of trustees supervises Loomis Sayles' conduct of the affairs of
the Funds.      
 
                                      19
<PAGE>
 
    
  As of March 3, 1997, the Loomis Sayles Employees' Profit Sharing Plan owned
26%, 91%, 35%, 56% and 99% of the Growth Fund, Mid-Cap Growth Fund, Mid-Cap
Value Fund, Small Cap Growth Fund, and Strategic Value Fund, respectively. As
of March 3, 1997, the Loomis-Sayles Funded Pension Plan owned 60% of the
Worldwide Fund. Each of these shareholders may be deemed to control the
relevant Fund.      
     
  Jeffrey W. Wardlow, Vice President of the Trust and of Loomis Sayles, has
served as the portfolio manager of the Core Value Fund since its commencement
of investment operations in 1991. Jerome A. Castellini, Vice President of the
Trust and of Loomis Sayles, has served as the portfolio manager of the Growth
Fund since its commencement of investment operations in 1991 and as a
portfolio manager of the Mid-Cap Growth Fund since its commencement of
investment operations in 1997. Scott S. Pape, Vice President of the Trust and
of Loomis Sayles, has served as a portfolio manager of the Mid-Cap Growth Fund
since its commencement of investment operations in 1997. Jeffrey C. Petherick
and Gregg D. Watkins, Vice Presidents of the Trust and Loomis Sayles, have
served as portfolio managers of the Mid-Cap Value Fund since its commencement
of operations in 1997. Christopher R. Ely, Vice President of the Trust and of
Loomis Sayles, has served as the portfolio manager and Philip C. Fine and
David L. Smith, Vice Presidents of the Trust and of Loomis Sayles, have served
as assistant portfolio managers of the Small Cap Growth Fund since its
commencement of investment operations in 1997. Jeffrey C. Petherick, Vice
President of the Trust and of Loomis Sayles, has served as a portfolio manager
of the Small Cap Value Fund since its commencement of investment operations in
1991, and Mary C. Champagne, Vice President of the Trust and of Loomis Sayles,
has served as a portfolio manager of the Small Cap Value Fund since 1995.
Philip J. Schettewi, Vice President of the Trust and Loomis Sayles, has served
as the portfolio manager of the Strategic Value Fund since its commencement of
investment operations in 1997. Daniel J. Fuss, President of the Trust and
Executive Vice President of Loomis Sayles, has served as the portfolio manager
of the domestic bonds sector of the Worldwide Fund since that Fund's
commencement of investment operations in 1996. E. John deBeer, Vice President
of the Trust and of Loomis Sayles, has served as portfolio manager of the
international bonds sector of the Worldwide Fund since that Fund's
commencement of investment operations in 1996. Quentin P. Faulkner, Vice
President of the Trust and of Loomis Sayles, has served as the portfolio
manager of the domestic equities sector of the Worldwide Fund since that
Fund's commencement of investment operations in 1996. Paul H. Drexler, Vice
President of the Trust and of Loomis Sayles, has served as the portfolio
manager of the international equities sector of the Worldwide Fund since that
Fund's commencement of investment operations in 1996 and of the International
Equity Fund since 1996. Each of the foregoing, except Ms. Champagne and
Messrs. Drexler, Ely, Fine and Smith have been employed by Loomis Sayles for
at least five years. Before joining Loomis Sayles in 1993, Ms. Champagne was a
portfolio manager at NBD Bank, and Mr. Drexler was an economist and portfolio
manager at Brown Brothers Harriman & Co. Prior to joining Loomis Sayles in
1996, Mr. Ely was Senior Vice President and Portfolio Manager, and Messrs.
Fine and Smith were Vice Presidents and Portfolio Managers, of Keystone
Investment Management Company, Inc.      
 
                                      20
<PAGE>
 
                                 FUND EXPENSES
 
  Each Fund pays Loomis Sayles a monthly investment advisory fee at the
following annual percentage rate of the Fund's average daily net assets:
 
<TABLE>    
<CAPTION>
   FUND                                                                    RATE
   ----                                                                    ----
   <S>                                                                     <C>
   Core Value............................................................. .50%
   Growth................................................................. .50%
   International Equity................................................... .75%
   Mid-Cap Growth......................................................... .75%
   Mid-Cap Value.......................................................... .75%
   Small Cap Value........................................................ .75%
   Small Cap Growth....................................................... .75%
   Strategic Value........................................................ .50%
   Worldwide.............................................................. .75%
</TABLE>     
 
  In addition to the investment advisory fee, each Fund pays all expenses not
expressly assumed by Loomis Sayles, including taxes, brokerage commissions,
fees and expenses of registering or qualifying the Fund's shares under federal
and state securities laws, fees of the Fund's custodian, transfer agent,
independent accountants and legal counsel, expenses of shareholders' and
trustees' meetings, 12b-1 fees, expenses of preparing, printing and mailing
prospectuses to existing shareholders and fees of trustees who are not
directors, officers or employees of Loomis Sayles and its affiliated
companies.
     
  Loomis Sayles has voluntarily agreed, for an indefinite period, to reduce
its advisory fees and/or bear other Fund expenses to the extent necessary to
limit total operating expenses of the Institutional Class shares of each Fund
to the following annual percentage rate of the Fund's average net assets:      
 
<TABLE>    
<CAPTION>
   FUND                                                                 RATE
   ----                                                                ------
   <S>                                                                 <C>
   Core Value.........................................................    .85%
   Growth.............................................................    .85%
   International Equity...............................................   1.00%
   Mid-Cap Growth.....................................................   1.00%
   Mid-Cap Value......................................................   1.00%
   Small Cap Value....................................................   1.00%
   Small Cap Growth...................................................   1.00%
   Strategic Value....................................................   1.00%
   Worldwide..........................................................   1.00%
</TABLE>     
 
  Loomis Sayles may change or terminate these voluntary arrangements at any
time, but the Funds' Prospectus would be supplemented to describe the change.
 
                                      21
<PAGE>
 
  Loomis Sayles may pay certain broker-dealers and financial intermediaries
whose customers are existing shareholders of the Funds a continuing fee in an
amount of up to .25% annually of the value of Fund shares held for those
customers' accounts. These fees are paid by Loomis Sayles out of its own
assets and are not assessed against the customers' accounts with the Funds.
 
                            PORTFOLIO TRANSACTIONS
     
  Portfolio turnover considerations will not limit Loomis Sayles' investment
discretion in managing the Funds' assets. The Funds anticipate that their
portfolio turnover rates will vary significantly from time to time depending
on the volatility of economic and market conditions. High portfolio turnover
may involve higher transaction costs and higher levels of taxable gains.
Although it is not possible to predict portfolio turnover rates with
certainty, Loomis Sayles does not expect the Mid-Cap Growth, Mid-Cap Value,
Small Cap Growth, and Strategic Value Funds' portfolio turnover rates to
exceed 200%, 70%, 150%, and 70%, respectively. A portfolio turnover rate in
excess of 100% may be considered high.      
 
                            HOW TO PURCHASE SHARES
 
  An investor may make an initial purchase of shares of any Fund by submitting
a completed application form and payment to:
 
      Boston Financial Data Services
      P.O. Box 8314
      Boston, Massachusetts 02266-8314
      Attn: Loomis Sayles Funds
     
  The minimum initial investment for the Institutional Class of each Fund's
shares is $1 million in that Fund. However, this minimum investment does not
apply to shareholders of any Fund (or any other fund that is a series of
Loomis Sayles Funds) who have an account that has been in continuous existence
since December 31, 1996 ("Original Shareholders"). Original Shareholders may
open an Institutional Class account in another Fund with no minimum investment
if they purchase the shares of the other Fund by exchanging Institutional
Class shares of a Fund (or any other fund that is a series of Loomis Sayles
Funds) in which they already own shares. Original Shareholders who hold their
accounts through financial intermediaries may avoid minimum investment
requirements only through this method. Original Shareholders whose accounts
are held directly with Boston Financial Data Services, Inc. ("BFDS"), the
shareholder servicing agent for State Street Bank and Trust Company ("State
Street Bank"), may also open an Institutional Class account in a new Fund by
investing a      
 
                                      22
<PAGE>
 
    
minimum of $2,500. For additional information regarding the eligibility of
Original Shareholders to purchase Institutional Class shares, call the
Distributor toll-free at 800-633-3330. A $2,500 minimum investment also
applies to the current and retired trustees of the Trust, investment advisory
clients of Loomis Sayles (and their directors, officers and employees), and
current and retired employees of Loomis Sayles and the parents, spouses and
children of the foregoing. The minimum investment may be waived by Loomis
Sayles in its sole discretion and will be waived for any new shareholder in
the Loomis Sayles Funds who initially invests less than $1 million but signs a
letter of intent stating the shareholder's intention to bring his or her
balance to $1 million within six months of the initial purchase. Loomis Sayles
reserves the right to redeem, at net asset value, the accounts of shareholders
that have signed a letter of intent but fail to meet the minimum investment
within the specified time. Subsequent investments must be at least $50.      
     
  Shares of any Fund may be purchased by (i) cash, (ii) exchanging
Institutional Class Shares of any Fund (or any other series of Loomis Sayles
Funds), (iii) exchanging securities on deposit with a custodian acceptable to
Loomis Sayles or (iv) a combination of such securities and cash. Purchase of
shares of the Fund in exchange for securities is subject in each case to the
determination by Loomis Sayles that the securities to be exchanged are
acceptable for purchase by the Fund. In all cases Loomis Sayles reserves the
right to reject any securities that are proposed for exchange. Securities
accepted by Loomis Sayles in exchange for Fund shares will be valued in the
same manner as the Fund's assets as described below as of the time of the
Fund's next determination of net asset value after such acceptance. All
dividends and subscription or other rights which are reflected in the market
price of accepted securities at the time of valuation become the property of
the Fund and must be delivered to the Fund upon receipt by the investor from
the issuer. A gain or loss for federal income tax purposes would be realized
upon the exchange by an investor that is subject to federal income taxation,
depending upon the investor's basis in the securities tendered. An investor
who wishes to purchase shares by exchanging securities should obtain
instructions by calling 800-633-3330 and asking for the Loomis Sayles
Shareholder Services Group.      
 
  Loomis Sayles will not approve the acceptance of securities in exchange for
shares of any Fund unless (1) Loomis Sayles, in its sole discretion, believes
the securities are appropriate investments for the Fund; (2) the investor
represents and agrees that all securities offered to the Fund can be resold by
the Fund without restriction under the Securities Act of 1933, as amended (the
"Securities Act") or otherwise; and (3) the securities are eligible to be
acquired under the Fund's investment policies and restrictions. No investor
owning 5% or more of Fund's shares may purchase additional shares of that Fund
by exchange of securities.
 
                                      23
<PAGE>
 
    
  All purchases made by check should be in U.S. dollars and made payable to
State Street Bank. Third party checks will not be accepted. When purchases are
made by check or periodic account investment, redemption will not be allowed
until the investment being redeemed has been in the account for 15 calendar
days.      
     
  Upon acceptance of an investor's order, BFDS opens an account, applies the
payment to the purchase of full and fractional Fund shares and mails a
statement of the account confirming the transaction.      
 
  After an account has been established, an investor may send subsequent
investments at any time directly to BFDS at the above address. The remittance
must be accompanied by either the account identification slip detached from a
statement of account or a note containing sufficient information to identify
the account, i.e., the Fund name and the investor's account number or name and
social security number.
 
  Subsequent investments can also be made by federal funds wire. Investors
should instruct their banks to wire federal funds to State Street Bank and
Trust Company, ABA #011000028. The text of the wire should read as follows:
"$ amount, STATE STREET BOS ATTN Mutual Funds. Credit Fund (Fund Name and
Institutional Class), DDA #9904-622-9, Shareholder Name, Shareholder Account
Number." A bank may charge a fee for transmitting funds by wire.
 
  Each Fund and the Distributor reserve the right to reject any purchase
order, including orders in connection with exchanges, for any reason which the
Fund or the Distributor in its sole discretion deems appropriate. Although the
Funds do not presently anticipate that they will do so, each Fund reserves the
right to suspend or change the terms of the offering of its shares. The price
an investor pays will be the per share net asset value next calculated after a
proper investment order is received by the Trust's transfer or other agent or
subagent. Shares of each Fund are sold with no sales charge. The net asset
value of each Fund's shares is calculated once daily as of the close of
regular trading on the New York Stock Exchange on each day the Exchange is
open for trading, by dividing the Fund's net assets by the number of shares
outstanding. Portfolio securities are valued at their market value as more
fully described in the Statement of Additional Information.
 
  The Distributor may accept telephone orders from broker-dealers who have
been previously approved by the Distributor. It is the responsibility of such
broker-dealers to promptly forward purchase or redemption orders to the
Distributor. Although there is no sales charge imposed by the Fund or the
Distributor, broker-dealers may charge the investor a transaction-based fee or
other fee for their services at either the time of purchase or the time of
redemption. Such charges may vary among broker-dealers but in all cases will
be retained by the broker-dealer and not remitted to the Fund.
 
                                      24
<PAGE>
 
    
  Each Fund also offers a Retail Class of shares that has a $250,000 minimum
investment for certain categories of investors and bears higher expenses.
Because of its lower expenses, the Institutional Class of shares of each Fund
is expected to have a higher total return than the Retail Class of shares.      
 
                             SHAREHOLDER SERVICES
 
  The Funds offer the following shareholder services, which are more fully
described in the Statement of Additional Information. Explanations and forms
are available from BFDS. Telephone redemption and exchange privileges will be
established automatically when an investor opens an account unless an investor
elects on the application to decline the privileges. Other privileges must be
specifically elected. A signature guarantee will be required to establish a
privilege after an account is opened.
 
  FREE EXCHANGE PRIVILEGE. Institutional Class shares of any Fund may be
exchanged for shares of the Institutional Class of any other Fund (or any
other fund that is a series of Loomis Sayles Funds and that offers
Institutional Class shares) or for shares of certain money market funds
advised by New England Funds Management, L.P., an affiliate of Loomis Sayles.
Exchanges may be made by written instructions or by telephone, unless an
investor elected on the application to decline telephone exchange privileges.
The exchange privilege should not be viewed as a means for taking advantage of
short-term swings in the market, and the Funds reserve the right to terminate
or limit the privilege of any shareholder who makes more than four exchanges
in any calendar year. The Funds may terminate or change the terms of the
exchange privilege at any time, upon 60 days' notice to shareholders.
 
  RETIREMENT PLANS. The Funds' Institutional Class shares may be purchased by
all types of tax-deferred retirement plans. Loomis Sayles makes available
retirement plan forms for IRAs.
 
  SYSTEMATIC WITHDRAWAL PLAN. If the value of an account is at least $25,000,
an investor may have periodic cash withdrawals automatically paid to the
investor or any person designated by the investor.
 
  AUTOMATIC INVESTMENT PLAN. Voluntary monthly investments of at least $50 may
be made automatically by pre-authorized withdrawals from an investor's
checking account.
 
                             HOW TO REDEEM SHARES
 
  An investor can redeem shares by sending a written request to Boston
Financial Data Services, Inc., P.O. Box 8314, Boston, Massachusetts 02266. As
 
                                      25
<PAGE>
 
described below, an investor may also redeem shares by calling BFDS at 800-
626-9390. Proceeds resulting from a written or telephone redemption request
can be wired to an investor's bank account or sent by check in the name of the
registered owners to their record address.
 
  The written request must include the name of the Fund, the account number,
the exact name(s) in which the shares are registered, and the number of shares
or the dollar amount to be redeemed. All owners of the shares must sign the
request in the exact names in which the shares are registered (this appears on
an investor's confirmation statement) and should indicate any special capacity
in which they are signing (such as trustee or custodian or on behalf of a
partnership, corporation or other entity). Investors requesting that
redemption proceeds be wired to their bank accounts must provide specific wire
instructions.
 
  If (1) an investor is redeeming shares worth more than $50,000, (2) an
investor is requesting that the proceeds check be made out to someone other
than the registered owners or be sent to an address other than the record
address, (3) the account registration has changed within the last 30 days or
(4) an investor is instructing us to wire the proceeds to a bank account not
designated on the application, the investor must have his or her signature
guaranteed by an eligible guarantor. Eligible guarantors include commercial
banks, trust companies, savings associations, credit unions and brokerage
firms that are members of domestic securities exchanges. Before submitting the
redemption request, an investor should verify with the guarantor institution
that it is an eligible guarantor. Signature guarantees by notaries public are
not acceptable.
 
  If an investor has requested certificates for the investment, an investor
must enclose the certificates and a properly completed redemption form or
stock power. The Funds recommend that certificates be sent by registered mail.
 
  When an investor telephones a redemption request, the proceeds are wired to
the bank account previously chosen by the investor. A wire fee (currently $5)
will be deducted from the proceeds. A telephonic redemption request must be
received by BFDS prior to the close of regular trading on the New York Stock
Exchange. If an investor telephones a request to BFDS after the Exchange
closes or on a day when the Exchange is not open for business, BFDS cannot
accept the request and a new one will be necessary.
 
  If an investor decides to change the bank account to which proceeds are to
be wired, an investor must send in this change on the Service Options Form
with a signature guarantee. Telephonic redemptions may only be made if an
investor's bank is a member of the Federal Reserve System or has a
correspondent bank that is a member of the System. Unless an investor
indicates otherwise on the account application, BFDS will be authorized to act
upon redemption and exchange instructions received by telephone from the
investor or any person claiming to act as the investor's representative who
can provide
 
                                      26
<PAGE>
 
BFDS with the investor's account registration and address as it appears on the
records of State Street Bank. BFDS will employ these or other reasonable
procedures to confirm that instructions communicated by telephone are genuine;
the Fund, State Street Bank, BFDS, the Distributor and Loomis Sayles will not
be liable for any losses due to unauthorized or fraudulent instructions if
these or other reasonable procedures are followed. For information, consult
BFDS. In times of heavy market activity, an investor who encounters difficulty
in placing a redemption or exchange order by telephone may wish to place the
order by mail as described above.
 
  The redemption price will be the net asset value per share next determined
after the redemption request and any necessary special documentation are
received by BFDS in proper form.
 
  Proceeds resulting from a written redemption request will normally be mailed
to an investor within seven days after receipt of the investor's request in
good order. Telephonic redemption proceeds will normally be wired to an
investor's bank on the first business day following receipt of a proper
redemption request. If an investor purchased shares by check and the check was
deposited less than fifteen days prior to the redemption request, the Fund may
withhold redemption proceeds until the check has cleared.
 
  The Fund may suspend the right of redemption and may postpone payment for
more than seven days when the New York Stock Exchange is closed for other than
weekends or holidays, or if permitted by the rules of the SEC when trading on
the Exchange is restricted or during an emergency which makes it impracticable
for the Fund to dispose of its securities or to determine fairly the value of
its net assets, or during any other period permitted by the SEC for the
protection of investors.
 
                    CALCULATION OF PERFORMANCE INFORMATION
 
  "Total return" for the one-, five- and ten-year periods (or for the life of
a class, if shorter) through the most recent calendar quarter represents the
average annual compounded rate of return on an investment of $1,000 in a Fund.
Total return may also be presented for other periods.
 
                DIVIDENDS, CAPITAL GAIN DISTRIBUTIONS AND TAXES
 
  The Funds declare and pay their net investment income to shareholders as
dividends annually. Each Fund also distributes all of its net capital gains
realized from the sale of portfolio securities. Any capital gain distributions
are normally made annually, but may, to the extent permitted by law, be made
more
 
                                      27
<PAGE>
 
frequently as deemed advisable by the trustees of the Trust. The Trust's
trustees may change the frequency with which the Funds declare or pay
dividends.
 
  Dividends and capital gain distributions will automatically be reinvested in
additional shares of the same Fund on the record date unless an investor has
elected to receive cash. Each Fund intends to qualify as a regulated
investment company under the Internal Revenue Code of 1986, as amended. As
such, so long as a Fund distributes substantially all its net investment
income and net capital gains to its shareholders, the Fund itself does not pay
any federal income tax to the extent such income and gains are so distributed.
 
  Income dividends and short term capital gain distributions are taxable as
ordinary income whether distributed in cash or additional shares. Long-term
capital gain distributions from all Funds are taxable as long-term capital
gains whether distributed in cash or additional shares and regardless of how
long an investor has owned shares of a Fund.
 
  Each Fund is required to withhold 31% of any redemption proceeds (including
the value of shares exchanged) and all income dividends and capital gain
distributions it pays to an investor (1) if an investor does not provide a
correct, certified taxpayer identification number, (2) if the Fund is notified
that an investor has underreported income in the past, or (3) if an investor
fails to certify to the Fund that the investor is not subject to such
withholding.
 
  Certain designated dividends from the Funds are expected to be eligible for
the dividends-received deduction for corporate shareholders.
 
  State Street Bank will send each investor and the IRS an annual statement
detailing federal tax information, including information about dividends and
distributions paid to the investor during the preceding year. Be sure to keep
this statement as a permanent record. A fee may be charged for any duplicate
information that an investor requests.
 
NOTE: The foregoing summarizes certain tax consequences of investing in the
      Funds. Before investing, an investor should consult his or her own
      tax adviser for more information concerning the federal, state and
      local tax consequences of investing in, redeeming or exchanging Fund
      shares.
 
                                      28
<PAGE>
 
INVESTMENT ADVISER
Loomis, Sayles & Company, L.P.
One Financial Center 
Boston, Massachusetts 02111
 
DISTRIBUTOR 
Loomis Sayles Distributors,
L.P. One Financial Center 
Boston, Massachusetts 02111
 
TRANSFER AND DIVIDEND PAYING AGENT 
AND CUSTODIAN OF ASSETS 
State Street Bank and Trust Company 
Boston, Massachusetts 02102
 
SHAREHOLDER SERVICING AGENT FOR 
STATE STREET BANK AND TRUST COMPANY 
Boston Financial Data Services, Inc. 
P.O. Box 8314
Boston, Massachusetts 02266
 
LEGAL COUNSEL 
Ropes & Gray 
One International Place 
Boston, Massachusetts 02110
 
INDEPENDENT ACCOUNTANTS 
Coopers & Lybrand L.L.P.
One Post Office Square
Boston, Massachusetts 02109
<PAGE>
 
      [LOGO OF LOOMIS SAYLES FUNDS APPEARS HERE]
 
 
      FIXED INCOME FUNDS INSTITUTIONAL CLASS
 
 
      PROSPECTUS
    
      APRIL 1, 1997     
<PAGE>
                           -----------------------
                           LOOMIS SAYLES FUNDS (TM)
                           =======================

                                     The Power of A Passion.(TM)

 ONE FINANCIAL CENTER . BOSTON, MASSACHUSETTS 02111 . (617) 482-2450
 
THE LOOMIS SAYLES FUNDS--FIXED INCOME FUNDS
 
 INSTITUTIONAL CLASS SHARES OF:
 
  LOOMIS SAYLES BOND FUND
  LOOMIS SAYLES GLOBAL BOND FUND
  LOOMIS SAYLES HIGH YIELD FUND
  LOOMIS SAYLES INTERMEDIATE MATURITY BOND FUND
  LOOMIS SAYLES INVESTMENT GRADE BOND FUND
  LOOMIS SAYLES MUNICIPAL BOND FUND
  LOOMIS SAYLES SHORT-TERM BOND FUND
  LOOMIS SAYLES U.S. GOVERNMENT SECURITIES FUND
<PAGE>

                                                                   
PROSPECTUS                                                    APRIL 1, 1997     
 
THE LOOMIS SAYLES FUNDS--FIXED INCOME FUNDS

  Loomis Sayles Bond Fund, Loomis Sayles Global Bond Fund, Loomis Sayles High
Yield Fund, Loomis Sayles Intermediate Maturity Bond Fund, Loomis Sayles
Investment Grade Bond Fund, Loomis Sayles Municipal Bond Fund, Loomis Sayles
Short-Term Bond Fund and Loomis Sayles U.S. Government Securities Fund (the
"Funds" and each a "Fund"), each a series of Loomis Sayles Funds, are
separately managed, no-load mutual funds, each of which has its own investment
objective and policies. Loomis, Sayles & Company, L.P. ("Loomis Sayles") is
the investment adviser of each Fund.
     
  The Funds (other than Loomis Sayles Municipal Bond Fund and Loomis Sayles
U.S. Government Securities Fund) offer two classes of shares: an Institutional
Class that is described in this Prospectus and a Retail Class, with a lower
investment minimum for certain categories of investors and bearing higher
expenses, that is described in a separate prospectus. This Prospectus
concisely describes the information that an investor should know before
investing in the Institutional Class shares of any Fund. Please read it
carefully and keep it for future reference. A Statement of Additional
Information dated April 1, 1997 is available free of charge; write to Loomis
Sayles Distributors, L.P. (the "Distributor"), One Financial Center, Boston,
Massachusetts 02111 or telephone 800-633-3330. The Statement of Additional
Information, which contains more detailed information about the Funds, has
been filed with the Securities and Exchange Commission (the "SEC") and is
incorporated by reference into this Prospectus. To obtain more information
about the Retail Class of shares, please call the Distributor toll-free at
800-633-3330 or contact your financial intermediary.     
 
                                            For all other information about
  For information about:                    the Funds:
   .Establishing an account                 CALL 800-633-3330
   .Account procedures and status
   .Exchanges
   .Shareholder services
  CALL 800-626-9390
 
  THESE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE SECURITIES AND
EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION NOR HAS THE SECURITIES
AND EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION PASSED UPON THE
ACCURACY OR ADEQUACY OF THIS PROSPECTUS. ANY REPRESENTATION TO THE CONTRARY IS
A CRIMINAL OFFENSE.
 
  THE LOOMIS SAYLES HIGH YIELD FUND WILL NORMALLY INVEST AT LEAST 65% OF ITS
ASSETS IN LOWER-RATED SECURITIES, COMMONLY KNOWN AS "JUNK BONDS" AND MAY
INVEST SUBSTANTIALLY ALL OF ITS ASSETS IN SUCH SECURITIES. INVESTMENTS OF THIS
TYPE ARE SUBJECT TO A GREATER RISK OF LOSS OF PRINCIPAL AND NON-PAYMENT OF
INTEREST. INVESTORS SHOULD ASSESS CAREFULLY THE RISKS ASSOCIATED WITH AN
INVESTMENT IN THE HIGH YIELD FUND. SEE "MORE INFORMATION ABOUT THE FUNDS'
INVESTMENTS AND RISK CONSIDERATIONS--LOWER RATED FIXED INCOME SECURITIES" AND
"APPENDIX A."
 
 
                                       1
<PAGE>
 
                               TABLE OF CONTENTS
 
<TABLE>    
<CAPTION>
                                                                           PAGE
                                                                           ----
<S>                                                                        <C>
SUMMARY OF EXPENSES.......................................................   3
FINANCIAL HIGHLIGHTS......................................................   5
THE TRUST.................................................................  11
INVESTMENT OBJECTIVES AND POLICIES........................................  11
MORE INFORMATION ABOUT THE FUNDS' INVESTMENTS AND RISK CONSIDERATIONS.....  15
THE FUNDS' INVESTMENT ADVISER.............................................  25
FUND EXPENSES.............................................................  26
PORTFOLIO TRANSACTIONS....................................................  27
HOW TO PURCHASE SHARES....................................................  27
SHAREHOLDER SERVICES......................................................  30
HOW TO REDEEM SHARES......................................................  31
CALCULATION OF PERFORMANCE INFORMATION....................................  33
DIVIDENDS, CAPITAL GAIN DISTRIBUTIONS AND TAXES...........................  33
APPENDIX A
  DESCRIPTION OF BOND RATINGS.............................................  36
</TABLE>     
 
                                       2
<PAGE>
 
                              SUMMARY OF EXPENSES

     
  The following information is provided as an aid in understanding the various
expenses that an investor in a Fund will bear indirectly. Except in the case
of the High Yield, Intermediate Maturity Bond and Investment Grade Bond Funds,
the information is based on expenses for the Funds' fiscal year ended December
31, 1996. The High Yield Fund did not commence investment operations until
September 11, 1996, and the Intermediate Maturity Bond and Investment Grade
Bond Funds did not commence investment operations until January 2, 1997. The
information about these Funds shown below is based on projected expenses for
the 1997 fiscal year. The information below should not be considered a
representation of past or future expenses, as actual expenses may be greater
or less than those shown. Also, the 5% annual return assumed in the Example
should not be considered a representation of investment performance, as actual
performance will vary.     
 
<TABLE>    
<CAPTION>
                                                        INTERMEDIATE INVESTMENT
                                    GLOBAL    HIGH        MATURITY     GRADE     MUNICIPAL
                             BOND    BOND     YIELD         BOND        BOND       BOND
                            FUND/3/  FUND     FUND          FUND        FUND       FUND
                            ------- ------    -----     ------------ ----------  ---------
 <S>                        <C>     <C>       <C>       <C>          <C>         <C>
 Shareholder Transaction
  Expenses:
 Maximum Sales Load
  Imposed on Purchases
  (as % of offering
  price).................    none    none     none          none        none       none
 Maximum Sales Load
  Imposed on Reinvested
  Dividends (as % of
  offering price)........    none    none     none          none        none       none
 Maximum Deferred Sales
  Load (as % of original
  purchase price or
  redemption proceeds)...    none    none     none          none        none       none
 Redemption Fees/1/......    none    none     2.00%         none        none       none
 Exchange Fees...........    none    none     none          none        none       none
 Annual Operating
  Expenses (as a
  percentage of net
  assets):
 Management Fees.........     .60%    .60%/2/  .60%          .40%        .40%       .40%/2/
 12b-1 Fees..............    none    none     none          none        none       none
 Other Operating Expenses
  (after expense
  reimbursements where
  indicated).............     .15%    .30%/3/  .15%/4/       .15%/4/     .15%/4/    .20%/3/
 Total Operating Expenses
  (after expense
  reimbursements where
  indicated).............     .75%    .90%/3/  .75%/4/       .55%/4/     .55%/4/    .60%/3/
 Example/5/:
 An investor would pay
  the following expenses
  on a $1,000 investment
  assuming a 5% annual
  return (with a
  redemption at the end
  of each time period):
 One Year................     $ 8    $  9      $28           $ 6         $ 6        $ 6
 Three Years.............      24      29       24            18          18         19
 Five Years..............      42      50                                            33
 Ten Years...............      93     111                                            75
 An investor would pay
  the following expenses
  on a $1,000 investment
  assuming a 5% annual
  return (without a
  redemption at the end
  of each time period):
 One Year................     $ 8    $  9      $ 8           $ 6         $ 6        $ 6
 Three Years.............      24      29       24            18          18         19
 Five Years..............      42      50                                            33
 Ten Years...............      93     111                                            75
</TABLE>     
 
                                       3
<PAGE>
 
<TABLE>    
<CAPTION>
                                                                      U.S.
                                                       SHORT-TERM  GOVERNMENT
                                                          BOND     SECURITIES
                                                          FUND        FUND
                                                       ----------  ----------
<S>                                                    <C>         <C>
Shareholder Transaction Expenses:
 Maximum Sales Load Imposed on Purchases (as % of
  offering price).....................................    none        none
 Maximum Sales Load Imposed on Reinvested Dividends
  (as % of offering price)............................    none        none
 Maximum Deferred Sales Load (as % of original
  purchase price or redemption proceeds)..............    none        none
 12b-1 Fees...........................................    none        none
 Redemption Fees/1/...................................    none        none
 Exchange Fees........................................    none        none
Annual Operating Expenses (as a percentage of net
 assets):
 Management Fees......................................     .25%/2/     .40%/2/
 Other Operating Expenses (after expense
  reimbursements where indicated).....................     .25%/3/     .20%/3/
 Total Operating Expenses (after expense
  reimbursements where indicated).....................     .50%/3/     .60%/3/
Example/5/:
An investor would pay the following expenses on a
 $1,000 investment assuming a 5% annual return (with
 or without a redemption at the end of each time
 period):
 One Year.............................................     $ 5         $ 6
 Three Years..........................................      16          19
 Five Years...........................................      28          33
 Ten Years............................................      63          75
</TABLE>     
- -----------
/1/ A $5 charge applies to any wire transfer of redemption proceeds from any
    Fund. A 2.00% redemption fee applies with respect to shares of the High
    Yield Fund redeemed within one (1) year of purchase. Loomis Sayles may, in
    its discretion, waive redemption fees on shares of the High Yield Fund as
    set forth under the heading "How to Redeem Shares" if it determines that
    there are minimal brokerage and transaction costs incurred in connection
    with the redemption.
    
/2/ The management fees shown in the table have been restated to reflect a
    reduction effective January 1, 1997 in the management fees payable to Loomis
    Sayles. Actual management fees and Total Operating Expenses for the year
    ended December 31, 1996 were 0.75% and 1.50%, respectively, for the Global
    Bond Fund, 0.60% and 1.00%, respectively, for the Municipal Bond Fund, 0.50%
    and 1.00%, respectively, for the Short-Term Bond Fund and 0.60% and 1.00%,
    respectively, for the U.S. Government Securities Fund.     
    
/3/ Loomis Sayles has voluntarily agreed, for an indefinite period, to limit the
    Bond Fund's Total Operating Expenses to 0.75% and to limit the other Funds'
    Total Operating Expenses to the percentages of net assets shown in the
    table. Without this agreement, Other Operating Expenses and Total Operating
    Expenses would have been 1.02% and 1.62%, respectively, for the Global Bond
    Fund, 1.71% and 2.11%, respectively, for the Municipal Bond Fund, 0.67% and
    0.92%, respectively, for the Short Term Bond Fund and 0.59% and .99%,
    respectively, for the U.S. Government Securities Fund.     
    
/4/ Other Operating Expenses is based on estimated expenses for the Funds for
    the 1997 fiscal year after giving effect to expense reimbursements. Loomis
    Sayles has voluntarily agreed, for an indefinite period, to limit the Funds'
    Total Operating Expenses to the percentages of net assets shown in the
    table. Without this agreement, estimated Other Operating Expenses and Total
    Operating Expenses would be 1.34% and 1.94%, respectively, for the High
    Yield Fund, 1.47% and 1.87%, respectively, for the Intermediate Maturity
    Bond Fund and 1.47% and 1.87%, respectively, for the Investment Grade Bond
    Fund.     
    
/5/ Under SEC rules, new funds are required to show expenses for the one- and
    three-year periods only.     
 
                                       4
<PAGE>
 
                             FINANCIAL HIGHLIGHTS
           (FOR AN INSTITUTIONAL CLASS SHARE OF EACH INDICATED FUND
                 OUTSTANDING THROUGHOUT THE INDICATED PERIODS)

     
  The following information is included in financial statements of the Funds
that have been audited by Coopers & Lybrand L.L.P., independent accountants.
The following information should be read in conjunction with the financial
statements and the notes thereto contained in the Funds' 1996 Annual report,
which is incorporated by reference in this Prospectus and the Statement of
Additional Information. The Intermediate Maturity Bond Fund and Investment
Grade Bond Fund had not commenced investment operations as of December 31,
1996.     
 
<TABLE>    
<CAPTION>
                                               BOND FUND
                           -------------------------------------------------------  
                                                                          MAY 16*
                                      YEAR ENDED DEC. 31,                    TO
                           ---------------------------------------------  DEC. 31,
                             1996      1995     1994     1993     1992      1991
                           --------  --------  -------  -------  -------  --------
<S>                        <C>       <C>       <C>      <C>      <C>      <C>      
Net asset value,
 beginning of period.....  $  12.29  $  10.05  $ 11.37  $ 10.36  $ 10.23   $10.00
                           --------  --------  -------  -------  -------   ------
Income from investment
 operations--
 Net investment income
  (loss).................      0.86      0.82     0.83     0.84     0.76     0.52
 Net realized and
  unrealized gain (loss)
  on investments.........      0.35      2.32    (1.29)    1.43     0.67     0.36
                           --------  --------  -------  -------  -------   ------
 Total from investment
  operations.............      1.21      3.14    (0.46)    2.27     1.43     0.88
                           --------  --------  -------  -------  -------   ------
Less distributions--
 Dividends from net
  investment income......     (0.86)    (0.82)   (0.84)   (0.81)   (0.76)   (0.52)
 Distributions in excess
  of net investment
  income.................      0.00      0.00    (0.02)    0.00     0.00     0.00
 Distributions from net
  realized capital
  gains..................     (0.26)    (0.08)    0.00    (0.45)   (0.54)   (0.13)
                           --------  --------  -------  -------  -------   ------
 Total distributions.....     (1.12)    (0.90)   (0.86)   (1.26)   (1.30)   (0.65)
                           --------  --------  -------  -------  -------   ------
Net asset value, end of
 period..................  $  12.38  $  12.29  $ 10.05  $ 11.37  $ 10.36   $10.23
                           ========  ========  =======  =======  =======   ======
Total return (%).........      10.3      32.0     (4.1)    22.2     14.3      8.9
Net assets, end of period
 (000)...................  $541,244  $255,710  $82,985  $64,222  $18,472   $9,922
Ratio of operating
 expenses to average net
 assets (%)..............      0.75      0.79     0.84     0.94     1.00     1.00**
Ratio of net investment
 income to average net
 assets (%)..............      7.93      8.34     7.92     8.26     7.50     8.97**
Portfolio turnover rate
 (%).....................        42        35       87      170      101      126**
Without giving effect to
 voluntary expense
 limitations:
 The ratio of operating
  expenses to average net
  assets would have been
  (%)....................      0.75      0.79     0.84     0.94     1.55     1.78**
 Net investment income
  per share would
  have been..............  $   0.86  $   0.82  $  0.83  $  0.84  $  0.70   $ 0.47
</TABLE>     
- -----------
    
 *Commencement of investment operations.     
**Computed on an annualized basis.
 
                                       5
<PAGE>
 
<TABLE>     
<CAPTION>
                                          GLOBAL BOND FUND
                           ----------------------------------------------------
                                                                       MAY 10*
                                    YEAR ENDED DEC. 31,                   TO
                           ------------------------------------------  DEC. 31,
                            1996     1995     1994     1993     1992     1991
                           -------  -------  -------  -------  ------  --------
<S>                        <C>      <C>      <C>      <C>      <C>     <C>
Net asset value,
 beginning of period.....  $ 11.39  $  9.82  $ 11.06  $ 10.32  $11.38   $10.00
                           -------  -------  -------  -------  ------   ------
Income from investment
 operations--
 Net investment income
  (loss).................     0.44     1.04     0.67     0.54    0.70     0.37
 Net realized and
  unrealized gain (loss)
  on investments.........     1.27     1.31    (1.63)    0.96   (0.60)    1.31
                           -------  -------  -------  -------  ------   ------
 Total from investment
  operations.............     1.71     2.35    (0.96)    1.50    0.10     1.68
                           -------  -------  -------  -------  ------   ------
Less distributions--
 Dividends from net
  investment income......    (0.75)   (0.78)   (0.04)   (0.49)  (0.77)   (0.30)
 Distributions from net
  realized capital
  gains..................     0.00     0.00     0.00    (0.27)  (0.39)    0.00
 Distributions from
  capital................     0.00     0.00    (0.24)    0.00    0.00     0.00
                           -------  -------  -------  -------  ------   ------
 Total distributions.....    (0.75)   (0.78)   (0.28)   (0.76)  (1.16)   (0.30)
                           -------  -------  -------  -------  ------   ------
Net asset value, end of
 period..................  $ 12.35  $ 11.39  $  9.82  $ 11.06  $10.32   $11.38
                           =======  =======  =======  =======  ======   ======
Total return (%).........     15.0     23.9     (8.7)    14.6     0.8     16.9
Net assets, end of period
 (000)...................  $26,513  $10,304  $25,584  $21,378  $9,968   $4,308
Ratio of operating
 expenses to average net
 assets (%)..............     1.50     1.50     1.30     1.50    1.50     1.50**
Ratio of net investment
 income to average net
 assets (%)..............     6.37     8.17     7.02     5.54    6.99     6.81**
Portfolio turnover rate
 (%).....................      131      148      153      150      72      137**
Without giving effect to
 voluntary expense
 limitations:
 The ratio of operating
  expenses to average net
  assets would have
  been (%)...............     1.77     1.69     1.30     1.51    2.58     3.99**
 Net investment income
  per share would have
  been...................  $  0.42  $  1.02  $  0.67  $  0.54  $ 0.59   $ 0.23
</TABLE>      
- -----------
    
 * Commencement of investment operations.      
** Computed on an annualized basis.
 
                                       6
<PAGE>
 
<TABLE>     
<CAPTION>
                                                                 HIGH YIELD FUND
                                                                 ---------------
                                                                    SEPT. 11*
                                                                       TO
                                                                    DEC. 31,
                                                                      1996
                                                                 ---------------
<S>                                                              <C>
Net asset value, beginning of period...........................      $10.00
                                                                     ------
Income from investment operations--
 Net investment income (loss)..................................        0.20
 Net realized and unrealized gain (loss) on investments........        0.11
                                                                     ------
 Total from investment operations..............................        0.31
                                                                     ------
Less distributions--
 Dividends from net investment income..........................       (0.20)
 Distributions from net realized capital gains.................        0.00
                                                                     ------
 Total distributions...........................................       (0.20)
                                                                     ------
Net asset value, end of period.................................      $10.11
                                                                     ======
Total return (%)...............................................         3.1
Net assets, end of period (000)................................      $1,939
Ratio of operating expenses to average net assets (%)..........        0.75**
Ratio of net investment income to average net assets (%).......        8.85**
Portfolio turnover rate (%)....................................           0**
Without giving effect to voluntary expense limitations:
 The ratio of operating expenses to average net assets would
  have been (%)................................................       12.06**
 Net investment income per share would have been...............      $(0.05)
</TABLE>      
- -----------
    
 * Commencement of investment operations.      
** Computed on an annualized basis.
 
                                       7
<PAGE>
 
<TABLE>     
<CAPTION>
                                          MUNICIPAL BOND FUND
                               -----------------------------------------------
                                      YEAR ENDED DEC. 31,              MAY 29*
                               --------------------------------------  TO DEC.
                                1996    1995    1994    1993    1992    1991
                               ------  ------  ------  ------  ------  -------
<S>                            <C>     <C>     <C>     <C>     <C>     <C>
Net asset value, beginning of
 period......................  $11.53  $10.41  $11.54  $10.95  $10.55  $10.00
                               ------  ------  ------  ------  ------  ------
Income from investment
 operations--
 Net investment income
  (loss).....................    0.52    0.52    0.52    0.51    0.51    0.24
 Net realized and unrealized
  gain (loss) on
  investments................   (0.15)   1.16   (1.13)   0.74    0.46    0.56
                               ------  ------  ------  ------  ------  ------
 Total from investment
  operations.................    0.37    1.68   (0.61)   1.25    0.97    0.80
                               ------  ------  ------  ------  ------  ------
Less distributions--
 Dividends from net
  investment income..........   (0.52)  (0.52)  (0.52)  (0.51)  (0.51)  (0.23)
 Distributions from net
  realized capital gains.....   (0.09)  (0.04)   0.00   (0.15)  (0.06)  (0.02)
                               ------  ------  ------  ------  ------  ------
 Total distributions.........   (0.61)  (0.56)  (0.52)  (0.66)  (0.57)  (0.25)
                               ------  ------  ------  ------  ------  ------
Net asset value, end of
 period......................  $11.29  $11.53  $10.41  $11.54  $10.95  $10.55
                               ======  ======  ======  ======  ======  ======
 Total return (%)............     3.3    16.5    (5.4)   11.6     9.4     8.1
Net assets, end of period
 (000).......................  $8,701  $7,961  $7,270  $5,160  $2,200  $  706
Ratio of operating expenses
 to average net
 assets (%)..................    1.00    1.00    1.00    1.00    1.00    1.00**
Ratio of net investment
 income to average net assets
 (%).........................    4.61    4.72    4.79    4.50    4.81    5.03**
Portfolio turnover rate (%)..      38      41      28      36      32      26**
Without giving effect to
 voluntary expense
 limitations:
 The ratio of operating
  expenses to average net
  assets would have been
  (%)........................    2.31    2.02    2.37    3.22    7.65   21.58**
 Net investment income per
  share would have been......  $ 0.37  $ 0.41  $ 0.37  $ 0.26  $(0.19) $(0.74)
</TABLE>      
- -----------
    
 * Commencement of investment operations.      
** Computed on an annualized basis.
 
                                       8
<PAGE>
 
<TABLE>     
<CAPTION>
                                             SHORT-TERM BOND FUND
                                   --------------------------------------------
                                                                       AUG. 3*
                                         YEAR ENDED DEC. 31,              TO
                                   ----------------------------------  DEC. 31,
                                    1996     1995     1994     1993      1992
                                   -------  -------  -------  -------  --------
<S>                                <C>      <C>      <C>      <C>      <C>
Net asset value, beginning of
 period..........................  $  9.81  $  9.46  $  9.95  $  9.87   $10.00
                                   -------  -------  -------  -------   ------
Income from investment
 operations--
 Net investment income...........     0.55     0.63     0.66     0.59     0.22
 Net realized and unrealized gain
  (loss) on investments..........    (0.11)    0.35    (0.49)    0.08    (0.13)
                                   -------  -------  -------  -------   ------
 Total from investment
  operations.....................     0.44     0.98     0.17     0.67     0.09
                                   -------  -------  -------  -------   ------
Less distributions--
 Dividends from net investment
  income.........................    (0.55)   (0.63)   (0.66)   (0.59)   (0.22)
 Distributions from net realized
  capital gains..................     0.00     0.00     0.00     0.00     0.00
                                   -------  -------  -------  -------   ------
 Total distributions.............    (0.55)   (0.63)   (0.66)   (0.59)   (0.22)
                                   -------  -------  -------  -------   ------
Net asset value, end of period...  $  9.70  $  9.81  $  9.46  $  9.95   $ 9.87
                                   =======  =======  =======  =======   ======
Total return (%).................      4.7     10.6      1.8      7.0      0.9
Net assets, end of period (000)..  $18,229  $26,039  $19,440  $15,226   $5,121
Ratio of operating expenses to
 average net
 assets (%)......................     1.00     1.00     1.00     1.00     1.00**
Ratio of net investment income to
 average net assets (%)..........     5.69     6.46     6.88     5.97     5.49**
Portfolio turnover rate (%)......      120      214       34       81       31**
Without giving effect to
 voluntary expense limitations:
 The ratio of operating expenses
  to average net assets would
  have been (%)..................     1.17     1.03     1.33     1.55     3.74**
 Net investment income per share
  would have been................  $  0.53  $  0.62  $  0.63  $  0.54   $ 0.11
</TABLE>      
- -----------
    
 * Commencement of investment operations.      
** Computed on an annualized basis.
 
                                       9
<PAGE>
 
<TABLE>     
<CAPTION>
                                  U.S. GOVERNMENT SECURITIES FUND
                          -----------------------------------------------------
                                                                       MAY 21*
                                    YEAR ENDED DEC. 31,                   TO
                          -------------------------------------------  DEC. 31,
                           1996     1995     1994     1993     1992      1991
                          -------  -------  -------  -------  -------  --------
<S>                       <C>      <C>      <C>      <C>      <C>      <C>
Net asset value,
 beginning of period....  $ 10.64  $  9.22  $ 10.53  $ 10.45  $ 10.77   $10.00
                          -------  -------  -------  -------  -------   ------
Income from investment
 operations--
 Net investment income..     0.68     0.66     0.64     0.64     0.64     0.40
 Net realized and
  unrealized gain (loss)
  on investments........    (0.57)    1.42    (1.30)    1.00     0.27     1.11
                          -------  -------  -------  -------  -------   ------
 Total from investment
  operations............     0.11     2.08    (0.66)    1.64     0.91     1.51
                          -------  -------  -------  -------  -------   ------
Less distributions--
 Dividends from net
  investment income.....    (0.67)   (0.66)   (0.65)   (0.65)   (0.59)   (0.40)
 Distributions from net
  realized capital
  gains.................     0.00     0.00     0.00    (0.91)   (0.64)   (0.34)
                          -------  -------  -------  -------  -------   ------
 Total distributions....    (0.67)   (0.66)   (0.65)   (1.56)   (1.23)   (0.74)
                          -------  -------  -------  -------  -------   ------
Net asset value, end of
 period.................  $ 10.08  $ 10.64  $  9.22  $ 10.53  $ 10.45   $10.77
                          =======  =======  =======  =======  =======   ======
Total return (%)........      1.3     23.0     (6.3)    15.7      8.8     15.3
Net assets, end of
 period (000)...........  $14,192  $19,499  $17,341  $18,317  $10,899   $6,248
Ratio of operating
 expenses to average net
 assets (%).............     1.00     1.00     1.00     1.00     1.00     1.00**
Ratio of net investment
 income to average net
 assets (%).............     6.23     6.47     6.60     5.95     6.54     7.01**
Portfolio turnover rate
 (%)....................      137      169      242      277      344      273**
Without giving effect to
 voluntary expense
 limitations:
 The ratio of operating
  expenses to average
  net assets would have
  been (%)..............     1.19     1.22     1.22     1.29     2.01     2.39**
 Net investment income
  per share would have
  been..................  $  0.66  $  0.64  $  0.62  $  0.61  $  0.54   $ 0.32
</TABLE>      
- -----------
    
 * Commencement of investment operations.      
** Computed on an annualized basis.
     
NOTE: Further information about each Fund's performance is contained in the
       Funds' annual report to shareholders, which may be obtained without
       charge.      
 
                                       10
<PAGE>
 
                                   THE TRUST
 
  Each Fund is a series of Loomis Sayles Funds (the "Trust"). The Trust is a
diversified open-end management investment company organized as a
Massachusetts business trust on February 20, 1991. The Trust is authorized to
issue an unlimited number of full and fractional shares of beneficial interest
in multiple series. Shares are freely transferable and entitle shareholders to
receive dividends as determined by the Trust's board of trustees and to cast a
vote for each share held at shareholder meetings. The Trust does not generally
hold shareholder meetings and will do so only when required by law.
Shareholders may call meetings to consider removal of the Trust's trustees.
 
                      INVESTMENT OBJECTIVES AND POLICIES
 
LOOMIS SAYLES BOND FUND
 
  The Fund's investment objective is high total investment return through a
combination of current income and capital appreciation.
     
  The Fund seeks to achieve its objective by normally investing substantially
all of its assets in fixed income securities, although up to 20% of its assets
may be invested in preferred stocks. At least 65% of the Fund's total assets
will normally be invested in bonds. The fixed income securities in which the
Fund may invest include corporate securities, securities issued or guaranteed
by the U.S. Government or its authorities or instrumentalities ("U.S.
Government Securities"), commercial paper, zero coupon securities, mortgage-
backed securities, collateralized mortgage obligations ("CMOs"), asset-backed
securities, when-issued securities, Rule 144A securities, repurchase
agreements and convertible securities. The Fund may engage in options and
futures transactions, repurchase transactions, foreign currency hedging
transactions and swap transactions.      
 
  The Fund may invest any portion of its assets in securities of Canadian
issuers, and up to 20% of its assets in securities of other foreign issuers.
The Fund may also invest up to 35% of its assets in securities of below
investment grade quality (commonly known as "junk bonds"). Securities of below
investment grade quality are securities rated below the top four rating
categories by each major rating agency that has rated the security, including
securities in the lowest rating categories, and unrated securities that Loomis
Sayles determines to be of comparable quality.
     
  The percentages of the Fund's assets invested as of December 31, 1996 in
securities assigned to the various rating categories by Standard & Poor's and
Moody's Investors Service, Inc. ("Moody's") were as follows: "AAA"/"Aaa"--
5.2%; "AA"/"Aa"--11.1%; "A"/"A"--9.5%; "BBB"/"Baa"--27.3%; "BB"/"Ba"--13.5%;
"B"/"B"--12.1%; "CCC"/"Caa"--5.1%.      
 
                                      11
<PAGE>
 
LOOMIS SAYLES GLOBAL BOND FUND
 
  The Fund's investment objective is high total investment return through a
combination of high current income and capital appreciation.
 
  The Fund seeks to achieve its objective by investing primarily in investment
grade fixed income securities denominated in various currencies, including
U.S. dollars, or in multicurrency units. Under normal conditions, the Fund
will invest at least 65% of its total assets in fixed income securities of
issuers from at least three countries, which may include the United States,
and no more than 40% of its assets in issuers headquartered in any one
country. However, up to 100% of the Fund's assets may be denominated in U.S.
dollars. The fixed income securities in which the Fund may invest include
corporate securities, U.S. Government Securities, commercial paper, zero
coupon securities, mortgage-backed securities, CMOs, asset-backed securities,
when-issued securities, Rule 144A securities, repurchase agreements and
convertible securities. The Fund may engage in options and futures
transactions, repurchase transactions, foreign currency hedging transactions
and swap transactions.
 
LOOMIS SAYLES HIGH YIELD FUND
 
  The Fund's investment objective is high total investment return through a
combination of current income and capital appreciation.
 
  The Fund seeks to achieve its objective by normally investing substantially
all of its assets in fixed income securities, although up to 20% of its assets
may be invested in preferred stocks and up to 10% of its assets may be
invested in common stocks. The fixed income securities in which the Fund may
invest include corporate securities, U.S. Government Securities, commercial
paper, zero coupon securities, mortgage-backed securities, CMOs, asset-backed
securities, when-issued securities, Rule 144A securities, repurchase
agreements and convertible securities. The Fund may engage in options and
futures transactions, repurchase transactions, foreign currency hedging
transactions and swap transactions. The Fund may invest any portion of its
assets in securities of Canadian issuers and up to 50% of its assets in the
securities of other foreign issuers.
 
  The Fund will normally invest at least 65% of its assets in fixed income
securities of below investment grade quality (commonly referred to as "junk
bonds").
 
LOOMIS SAYLES INTERMEDIATE MATURITY BOND FUND
 
  The Fund's investment objective is high total investment return through a
combination of current income and capital appreciation.
 
                                      12
<PAGE>
 
  The Fund seeks to achieve its objective by normally investing at least 90%
of its assets in fixed income securities of investment grade quality and to
maintain an average dollar weighted maturity of between three and ten years.
For purposes of the 90% test, a security will be treated as being of
investment grade quality if it is rated by at least one major rating agency in
one of its top four rating categories at the time of purchase or, if unrated,
is determined by Loomis Sayles to be of comparable quality. The Fund may also
invest up to 10% of its assets in fixed income securities of below investment
grade quality (commonly known as "junk bonds"). The fixed income securities in
which the Fund may invest include corporate securities, U.S. Government
Securities, commercial paper, zero coupon securities, mortgage-backed
securities, CMOs, asset-backed securities, when-issued securities, Rule 144A
securities, repurchase agreements and convertible securities. The Fund may
engage in options and futures transactions, repurchase transactions, foreign
currency hedging transactions, swap transactions, and securities lending. The
Fund may invest any portion of its assets in securities of Canadian issuers
and up to 20% of its assets in securities of other foreign issuers.
 
LOOMIS SAYLES INVESTMENT GRADE BOND FUND
 
  The Fund's investment objective is high total investment return through a
combination of current income and capital appreciation.
     
  The Fund seeks to achieve its objective by normally investing at least 65%
of its assets in fixed income securities of investment grade quality. Up to
20% of the Fund's assets may be invested in preferred stocks. The Fund may
also invest up to 10% of its assets in fixed income securities of below
investment grade quality (commonly known as "junk bonds"). The fixed income
securities in which the Fund may invest include corporate securities, U.S.
Government Securities, commercial paper, zero coupon securities, mortgage-
backed securities, CMOs, asset-backed securities, when-issued securities, Rule
144A securities, repurchase agreements and convertible securities. The Fund
may engage in options and futures transactions, repurchase transactions,
foreign currency hedging transactions, swap transactions and securities
lending. The Fund may invest any portion of its assets in securities of
Canadian issuers and up to 20% of its assets in the securities of other
foreign issuers.      
 
LOOMIS SAYLES MUNICIPAL BOND FUND
 
  The Fund's investment objective is as high a level of current income exempt
from federal income tax as is consistent with the preservation of capital.
     
  The Fund seeks to achieve its objective by normally investing substantially
all of its assets in securities the income from which is, in the opinion of
issuer's      
 
                                      13
<PAGE>

     
counsel at the time of issuance, exempt from federal income tax ("tax exempt
securities"). It is a fundamental policy of the Fund that, during periods of
normal market conditions, at least 80% of its net assets will be invested in
tax exempt securities. Normally, substantially all of its assets will be
invested in fixed income securities of investment grade quality (i.e.,
securities rated at the time of purchase by at least one of the major rating
agencies in its top four categories) or in unrated securities determined by
Loomis Sayles to be of comparable quality, and at least 65% of the Fund's
assets will be invested in bonds. The Fund may engage in options and futures
transactions.      
      
  The Fund may invest in "private activity bonds," which pay interest that,
although exempt from ordinary federal income taxes, may be subject to federal
or state alternative minimum taxes. The Fund's investments in private activity
bonds normally will not exceed 20% of its nets assets.      
 
LOOMIS SAYLES SHORT-TERM BOND FUND
 
  The Fund's investment objective is high total investment return through a
combination of current income and capital appreciation with relatively low
fluctuation in net asset value.
 
  The Fund seeks to achieve its objective by normally investing substantially
all of its assets in fixed income securities, although up to 20% of its assets
may be invested in non-convertible preferred stock. At least 65% of the Fund's
total assets will normally be invested in bonds with a remaining maturity of 5
years or less. The fixed income securities in which the Fund may invest
include corporate securities, U.S. Government Securities, commercial paper,
zero coupon securities, mortgage-backed securities, CMOs, asset-backed
securities, when-issued securities, Rule 144A securities, repurchase
agreements and convertible securities. The Fund may engage in options and
futures transactions, repurchase transactions, foreign currency hedging
transactions and swap transactions. The Fund may invest up to 20% of its
assets in securities of foreign issuers.
 
  In an effort to minimize fluctuations in market value, the Fund is expected
to maintain an average dollar-weighted maturity of between one and three
years.
 
LOOMIS SAYLES U.S. GOVERNMENT SECURITIES FUND
 
  The Fund's investment objective is high total investment return through a
combination of current income and capital appreciation.
     
  The Fund seeks to achieve its objective by investing substantially all its
assets in U.S. Government Securities, including CMOs, and in certificates
representing undivided interests in the interest or principal of U.S. Treasury
      
                                      14
<PAGE>

     
securities. At least 65% of the Fund's total assets will normally be invested
in U.S. Government Securities.      
 
ALL FUNDS
 
  For temporary defensive purposes, each Fund may invest any portion of its
assets in fixed income securities, cash or any other securities deemed
appropriate by Loomis Sayles. Except for each Fund's investment objective, and
any investment policies that are identified as "fundamental," all of the
investment policies of each Fund may be changed without a vote of Fund
shareholders.
 
                 MORE INFORMATION ABOUT THE FUNDS' INVESTMENTS
                            AND RISK CONSIDERATIONS
 
DEBT AND OTHER FIXED INCOME SECURITIES
 
  Each of the Funds may invest in fixed income securities of any maturity,
although the Short-Term Bond Fund expects to maintain an average weighted
maturity of less than three years, and the Intermediate Maturity Bond Fund
expects to maintain an average weighted maturity of between three and ten
years. Fixed income securities pay a specified rate of interest or dividends,
or a rate that is adjusted periodically by reference to some specified index
or market rate. Fixed income securities include securities issued by federal,
state, local and foreign governments and related agencies, and by a wide range
of private issuers. Because interest rates vary, it is impossible to predict
the income of a Fund that invests in fixed income securities for any
particular period. The net asset value of such a Fund's shares will vary as a
result of changes in the value of the securities in the Fund's portfolio.
 
  Fixed income securities are subject to market and credit risk. Market risk
relates to changes in a security's value as a result of changes in interest
rates generally. In general, the values of fixed income securities increase
when prevailing interest rates fall and decrease when interest rates rise.
Credit risk relates to the ability of the issuer to make payments of principal
and interest.
 
U.S. GOVERNMENT SECURITIES
 
  U.S. Government Securities have different kinds of government support. For
example, some U.S. Government Securities, such as U.S. Treasury bonds, are
supported by the full faith and credit of the United States, whereas certain
other U.S. Government Securities issued or guaranteed by federal agencies or
government-sponsored enterprises are not supported by the full faith and
credit of the United States.
 
                                      15
<PAGE>
 
  Although U.S. Government Securities generally do not involve the credit
risks associated with other types of fixed income securities, the market
values of U.S. Government Securities do go up and down as interest rates
change. Thus, for example, the value of an investment in a Fund that holds
U.S. Government Securities may fall during times of rising interest rates.
Yields on U.S. Government Securities tend to be lower than those on corporate
securities of comparable maturities.
 
  Some U.S. Government Securities, such as Government National Mortgage
Association Certificates ("GNMA"), are known as "mortgage-backed" securities.
Interest and principal payments on the mortgages underlying mortgage-backed
U.S. Government Securities are passed through to the holders of the security.
If a Fund purchases mortgage-backed securities at a discount or a premium, the
Fund will recognize a gain or loss when the payments of principal, through
prepayment or otherwise, are passed through to the Fund and, if the payment
occurs in a period of falling interest rates, the Fund may not be able to
reinvest the payment at as favorable an interest rate. As a result of these
principal prepayment features, mortgage-backed securities are generally more
volatile investments than many other fixed income securities.
 
  In addition to investing directly in U.S. Government Securities, the Funds
may purchase certificates of accrual or similar instruments ("strips")
evidencing undivided ownership interests in interest payments or principal
payments, or both, in U.S. Government Securities. These investment instruments
may be highly volatile.
 
TAX EXEMPT SECURITIES
 
  Issuers of tax exempt securities may make interest and principal payments
from money raised through a variety of sources, including (1) the issuer's
general taxing power, (2) a specific type of tax, such as a property tax, or
(3) a particular facility or project, such as a highway. The ability of an
issuer of tax exempt bonds to make these payments could be affected by
litigation, legislation or other political events, or the bankruptcy of the
issuer. The interest on tax exempt securities issued after August 15, 1986 is
retroactively taxable from the date of issuance if the issuer does not comply
with certain requirements concerning the use of bond proceeds and the
application of earnings on bond proceeds.
 
LOWER RATED FIXED INCOME SECURITIES
 
  Each Fund (other than the Municipal Bond and U.S. Government Securities
Funds) may invest a portion of its assets in securities rated below investment
grade (commonly referred to as "junk bonds"). The Bond Fund may invest up
 
                                      16
<PAGE>
 
to 35%, the Global Bond and Short-Term Bond Funds each may invest up to 20%,
the Investment Grade Bond and Intermediate Maturity Bond Funds each may invest
up to 10% and the High Yield Fund will normally invest at least 65% of its
assets in such securities. For purposes of the foregoing percentages, a
security will be treated as being of investment grade quality if at the time a
Fund acquires it at least one major rating agency has rated the security in
its top four rating categories (even if another such agency has issued a lower
rating), or if the security is unrated but Loomis Sayles determines it to be
of investment grade quality. Lower rated fixed income securities generally
provide higher yields, but are subject to greater credit and market risk, than
higher quality fixed income securities. Lower rated fixed income securities
are considered predominantly speculative with respect to the ability of the
issuer to meet principal and interest payments. Achievement of the investment
objective of a Fund investing in lower rated fixed income securities may be
more dependent on Loomis Sayles' own credit analysis than is the case with
higher quality bonds. The market for lower rated fixed income securities may
be more severely affected than some other financial markets by economic
recession or substantial interest rate increases, by changing public
perceptions of this market or by legislation that limits the ability of
certain categories of financial institutions to invest in these securities. In
addition, the secondary market may be less liquid for lower rated fixed income
securities. This lack of liquidity at certain times may affect the values of
these securities and may make the evaluation and sale of these securities more
difficult. Securities in the lowest rating categories may be in poor standing
or in default. Securities in the lowest investment grade category (BBB or Baa)
have some speculative characteristics.
 
  For more information about the ratings services' descriptions of the various
rating categories, see Appendix A.
 
COMMON STOCKS AND OTHER EQUITY SECURITIES
 
  Common stocks and similar equity securities, such as warrants and
convertibles, are volatile and more risky than some other forms of investment.
The value of an investment in a Fund that invests in equity securities may
sometimes decrease. Equity securities of companies with relatively small
market capitalization may be more volatile than the securities of larger, more
established companies and than the broad equity market indexes.
 
ZERO COUPON SECURITIES
 
  Each Fund may invest in "zero coupon" fixed income securities. These
securities accrue interest at a specified rate, but do not pay interest in
cash on a current basis. A Fund investing in zero coupon securities is
required to distribute the income on these securities to Fund shareholders as
the income accrues, even
 
                                      17
<PAGE>
 
though the Fund is not receiving the income in cash on a current basis. Thus
the Fund may have to sell other investments to obtain cash to make income
distributions at times when Loomis Sayles would not otherwise deem it
advisable to do so. The market value of zero coupon securities is often more
volatile than that of non-zero coupon fixed income securities of comparable
quality and maturity.
 
MORTGAGE-BACKED SECURITIES
     
  Each Fund (except the Municipal Bond Fund) may invest in mortgage-backed
securities, such as GNMA or Federal National Mortgage Association
certificates, which differ from traditional debt securities. Among the major
differences are that interest and principal payments are made more frequently,
usually monthly, and that principal may be prepaid at any time because the
underlying mortgage loans generally may be prepaid at any time. As a result,
if a Fund purchases these assets at a premium, a faster-than-expected
prepayment rate will reduce yield to maturity, and a slower-than-expected
prepayment rate will increase yield to maturity. If a Fund purchases mortgage-
backed securities at a discount, faster-than-expected prepayments will
increase, and slower-than-expected prepayments will reduce, yield to maturity.
Prepayments, and resulting amounts available for reinvestment by the Fund, are
likely to be greater during a period of declining interest rates and, as a
result, are likely to be reinvested at lower interest rates. Accelerated
prepayments on securities purchased at a premium may result in a loss of
principal if the premium has not been fully amortized at the time of
prepayment. Although these securities will decrease in value as a result of
increases in interest rates generally, they are likely to appreciate less than
other fixed-income securities when interest rates decline because of the risk
of prepayments.      
 
COLLATERALIZED MORTGAGE OBLIGATIONS
     
  Each Fund (except the Municipal Bond Fund) may invest in CMOs. A CMO is a
security backed by a portfolio of mortgages or mortgage-backed securities held
under an indenture. CMOs may be issued either by U.S. Government
instrumentalities or by non-governmental entities. The issuer's obligation to
make interest and principal payments is secured by the underlying portfolio of
mortgages or mortgage-backed securities. CMOs are issued with a number of
classes or series which have different maturities and which may represent
interests in some or all of the interest or principal on the underlying
collateral or a combination thereof. CMOs of different classes are generally
retired in sequence as the underlying mortgage loans in the mortgage pool are
repaid. In the event of sufficient early prepayments on such mortgages, the
class or series of CMOs first to mature generally will be retired prior to its
maturity. As with other mortgage-backed securities, the early retirement of a
particular      
 
                                      18
<PAGE>

     
class or series of CMOs held by a Fund could involve the loss of any premium
the Fund paid when it acquired the investment and could result in the Fund's
reinvesting the proceeds at a lower interest rate than the retired CMO paid.
Because of the early retirement feature, CMOs may be more volatile than many
other fixed-income investments.      
 
ASSET-BACKED SECURITIES
     
  Each Fund (except the Municipal Bond and U.S. Government Securities Funds)
may invest in asset-backed securities. Through the use of trusts and special
purpose corporations, automobile and credit card receivables are securitized
in pass-through structures similar to mortgage pass-through structures or in a
pass-through structure similar to the CMO structure. Generally, the issuers of
asset-backed bonds, notes or pass-through certificates are special purpose
entities and do not have any significant assets other than the receivables
securing such obligations. In general, the collateral supporting asset-backed
securities is of shorter maturity than mortgage loans. Instruments backed by
pools of receivables are similar to mortgage-backed securities in that they
are subject to unscheduled prepayments of principal prior to maturity. When
the obligations are prepaid, the Fund will ordinarily reinvest the prepaid
amounts in securities the yields of which reflect interest rates prevailing at
the time. Therefore, a Fund's ability to maintain a portfolio that includes
high-yielding asset-backed securities will be adversely affected to the extent
that prepayments of principal must be reinvested in securities that have lower
yields than the prepaid obligations. Moreover, prepayments of securities
purchased at a premium could result in a realized loss.      
 
WHEN-ISSUED SECURITIES
 
  Each Fund may purchase securities on a "when-issued" basis. This means that
the Fund will enter into a commitment to buy the security before the security
has been issued. The Fund's payment obligation and the interest rate on the
security are determined when the Fund enters into the commitment. The security
is typically delivered to the Fund 15 to 120 days later. No interest accrues
on the security between the time the Fund enters into the commitment and the
time the security is delivered. If the value of the security being purchased
falls between the time a Fund commits to buy it and the payment date, the Fund
may sustain a loss. The risk of this loss is in addition to the Fund's risk of
loss on the securities actually in its portfolio at the time. In addition,
when the Fund buys a security on a when-issued basis, it is subject to the
risk that market rates of interest will increase before the time the security
is delivered, with the result that the yield on the security delivered to the
Fund may be lower than the yield available on other, comparable securities at
the time of delivery. If a Fund has outstanding obligations to buy when-issued
securities, it
 
                                      19
<PAGE>
 
will maintain liquid assets in a segregated account at its custodian bank in
an amount sufficient to satisfy these obligations.
 
RULE 144A SECURITIES
 
  Each Fund may invest in Rule 144A securities, which are privately offered
securities that can be resold only to certain qualified institutional buyers.
Rule 144A securities are treated as illiquid, unless Loomis Sayles has
determined, under guidelines established by the Trust's trustees, that the
particular issue of Rule 144A securities is liquid.
 
FOREIGN SECURITIES
     
  Each Fund (except the Municipal Bond and U.S. Government Securities Funds)
may invest in securities of issuers organized or headquartered outside the
United States ("foreign securities"). The Short-Term Bond Fund will not
purchase a foreign security if, as a result, the Fund's holdings of foreign
securities would exceed 20% of the Fund's assets. Each of the Bond,
Intermediate Maturity Bond and Investment Grade Bond Funds may each invest any
portion of its assets in securities of Canadian issuers, but will not purchase
foreign securities other than those of Canadian issuers if, as a result, such
Fund's holdings of non-U.S. and non-Canadian securities would exceed 20% of
the Fund's assets. The High Yield Fund may invest any portion of its assets in
securities of Canadian issuers and up to 50% of its assets in the securities
of other foreign issuers.      
 
  Although investing in foreign securities may increase a Fund's
diversification and reduce portfolio volatility, foreign securities may
present risks not associated with investments in comparable securities of U.S.
issuers. There may be less information publicly available about a foreign
corporate or government issuer than about a U.S. issuer, and foreign corporate
issuers are not generally subject to accounting, auditing and financial
reporting standards and practices comparable to those in the United States.
The securities of some foreign issuers are less liquid and at times more
volatile than securities of comparable U.S. issuers. Foreign brokerage
commissions and securities custody costs are often higher than in the United
States. With respect to certain foreign countries, there is a possibility of
governmental expropriation of assets, confiscatory taxation, political or
financial instability and diplomatic developments that could affect the value
of investments in those countries. A Fund's receipt of interest on foreign
government securities may depend on the availability of tax or other revenues
to satisfy the issuer's obligations.
 
  A Fund's investments in foreign securities may include investments in
countries whose economies or securities markets are not yet highly developed.
 
                                      20
<PAGE>
 
Special considerations associated with these investments (in addition to the
considerations regarding foreign investments generally) may include, among
others, greater political uncertainties, an economy's dependence on revenues
from particular commodities or on international aid or development assistance,
currency transfer restrictions, highly limited numbers of potential buyers for
such securities and delays and disruptions in securities settlement
procedures.
 
  Since most foreign securities are denominated in foreign currencies or
traded primarily in securities markets in which settlements are made in
foreign currencies, the value of these investments and the net investment
income available for distribution to shareholders of a Fund investing in these
securities may be affected favorably or unfavorably by changes in currency
exchange rates or exchange control regulations. Changes in the value relative
to the U.S. dollar of a foreign currency in which a Fund's holdings are
denominated will result in a change in the U.S. dollar value of the Fund's
assets and the Fund's income available for distribution.
 
  In addition, although part of a Fund's income may be received or realized in
foreign currencies, the Fund will be required to compute and distribute its
income in U.S. dollars. Therefore, if the value of a currency relative to the
U.S. dollar declines after the Fund's income has been earned in that currency,
translated into U.S. dollars and declared as a dividend, but before payment of
the dividend, the Fund could be required to liquidate portfolio securities to
pay the dividend. Similarly, if the value of a currency relative to the U.S.
dollar declines between the time the Fund accrues expenses in U.S. dollars and
the time such expenses are paid, the amount of such currency required to be
converted into U.S. dollars will be greater than the equivalent amount in such
currency of such expenses at the time they were incurred.
 
  In determining whether to invest assets of the Funds in securities of a
particular foreign issuer, Loomis Sayles will consider the likely effects of
foreign taxes on the net yield available to the Fund and its shareholders.
Compliance with foreign tax law may reduce a Fund's net income available for
distribution to shareholders.
 
FOREIGN CURRENCY HEDGING TRANSACTIONS
 
  The Funds may engage in foreign currency exchange transactions to protect
the value of specific portfolio positions or in anticipation of changes in
relative values of currencies in which current or future Fund portfolio
holdings are denominated or quoted. For example, to protect against a change
in the foreign currency exchange rate between the date on which a Fund
contracts to purchase or sell a security and the settlement date for the
purchase or sale, or to "lock in" the equivalent of a dividend or interest
payment in another currency, a Fund
 
                                      21
<PAGE>
 
might purchase or sell a foreign currency on a spot (that is, cash) basis at
the prevailing spot rate. If conditions warrant, the Funds may also enter into
private contracts to purchase or sell foreign currencies at a future date
("forward contracts"). The Funds might also purchase exchange-listed and over-
the-counter call and put options on foreign currencies. Over-the-counter
currency options are generally less liquid than exchange-listed options, and
will be treated as illiquid assets. The Funds may not be able to dispose of
over-the-counter options readily.
 
  Foreign currency transactions involve costs and may result in losses. In
addition, each Fund's ability to engage in currency hedging transactions may
be limited by tax considerations.
 
SWAP TRANSACTIONS
 
  The Funds may enter into interest rate or currency swaps. The Funds will
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 duration management technique or to protect against any
increase in the price of securities a Fund anticipates purchasing at a later
date. Interest rate swaps involve the exchange by a 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 relative values of the
specified currencies. The Fund will maintain liquid assets in a segregated
custodial account to cover its current obligations under swap agreements.
Because swap agreements are not exchange-traded, but are private contracts
into which the Fund and a swap counterparty enter as principals, the Fund may
experience a loss or delay in recovering assets if the counter party were to
default on its obligations.
 
OPTIONS AND FUTURES TRANSACTIONS
 
  The Funds (except the U.S. Government Securities Fund) may buy, sell or
write options on securities, securities indexes, currencies or futures
contracts and may buy and sell futures contracts on securities, securities
indexes or currencies. The Funds may engage in these transactions either for
the purpose of enhancing investment return, or to hedge against changes in the
value of other assets that the Funds own or intend to acquire. Options and
futures fall into the broad category of financial instruments known as
"derivatives" and involve special risks. Use of options or futures for other
than hedging purposes may be considered a speculative activity, involving
greater risks than are involved in hedging.
 
                                      22
<PAGE>

     
  Options can generally be classified as either "call" or "put" options. There
are two parties to a typical options transaction: the "writer" and the
"buyer." A call option gives the buyer the right to buy a security or other
asset (such as an amount of currency or a futures contract) from, and a put
option gives the buyer the right to sell a security or other asset to, the
option writer at a specified price, on or before a specified date. The buyer
of an option pays a premium when purchasing the option, which reduces the
return on the underlying security or other asset if the option is exercised,
and results in a loss if the option expires unexercised. The writer of an
option receives a premium from writing an option, which may increase its
return if the option expires or is closed out at a profit. If a Fund as the
writer of an option is unable to close out an unexpired option, it must
continue to hold the underlying security or other asset until the option
expires, to "cover" its obligation under the option.      
 
  A futures contract creates an obligation by the seller to deliver and the
buyer to take delivery of the type of instrument or cash at the time and in
the amount specified in the contract. Although many futures contracts call for
the delivery (or acceptance) of the specified instrument, futures are usually
closed out before the settlement date through the purchase (or sale) of a
comparable contract. If the price of the sale of the futures contract by a
Fund exceeds (or is less than) the price of the offsetting purchase, the Fund
will realize a gain (or loss).
 
  The value of options purchased by a Fund and futures contracts held by a
Fund may fluctuate based on a variety of market and economic factors. In some
cases, the fluctuations may offset (or be offset by) changes in the value of
securities held in a Fund's portfolio. All transactions in options and futures
involve the possible risk of loss to the Fund of all or a significant part of
the value of its investment. In some cases, the risk of loss may exceed the
amount of the Fund's investment. When a Fund writes a call option or sells a
futures contract without holding the underlying securities, currencies or
futures contracts, its potential loss is unlimited. The Fund will be required,
however, to set aside with its custodian bank certain assets in amounts
sufficient at all times to satisfy its obligations under options, futures and
contracts.
 
  The successful use of options and futures will usually depend on Loomis
Sayles' ability to forecast stock market, currency or other financial market
movements correctly. The Fund's ability to hedge against adverse changes in
the value of securities held in its portfolio through options and futures also
depends on the degree of correlation between changes in the value of futures
or options positions and changes in the values of the portfolio securities.
The successful use of futures and exchange traded options also depends on the
availability of a liquid secondary market to enable a Fund to close its
positions on a timely basis. There can be no assurance that such a market will
exist at any particular time.
 
                                      23
<PAGE>
 
In the case of options that are not traded on an exchange ("over-the-counter"
options), a Fund is at risk that the other party to the transaction will
default on its obligations, or will not permit a Fund to terminate the
transaction before its scheduled maturity. As a result of these
characteristics, each Fund will treat most over-the-counter options (and the
assets it segregates to cover its obligations thereunder) as illiquid.
 
  The options and futures markets of foreign countries are small compared to
those of the United States and consequently are characterized in most cases by
less liquidity than are the U.S. markets. In addition, foreign markets may be
subject to less detailed reporting requirements and regulatory controls than
U.S. markets. Furthermore, investments in options in foreign markets are
subject to many of the same risks as other foreign investments. See "Foreign
Securities" above.
 
REPURCHASE AGREEMENTS
 
  Each Fund may invest in repurchase agreements. In repurchase agreements, a
Fund buys securities from a seller, usually a bank or brokerage firm, with the
understanding that the seller will repurchase the securities at a higher price
at a later date. Such transactions afford an opportunity for a Fund to earn a
return on available cash at minimal market risk, although the Fund may be
subject to various delays and risks of loss if the seller is unable to meet
its obligations to repurchase.
 
SECURITIES LENDING
 
  The Intermediate Maturity Bond and Investment Grade Bond Funds may lend
their portfolio securities to broker-dealers or other parties under contracts
calling for the deposit by the borrower with the Fund's custodian of cash
collateral equal to at least the market value of the securities loaned, marked
to market on a daily basis. The Fund will continue to benefit from interest or
dividends on the securities loaned and will also receive interest through
investment of the cash collateral in short-term liquid investments. No loans
will be made if, as a result, the aggregate amount of such loans outstanding
at any time would exceed 33 1/3% of the Fund's total assets (taken at current
value). Any voting rights, or rights to consent, relating to securities loaned
pass to the borrower. However, if a material event affecting the investment
occurs, such loans will be called so that the securities may be voted by the
Fund. The Fund pays various fees in connection with such loans, including
shipping fees and reasonable custodial or placement fees.
 
  Securities loans must be fully collateralized at all times, but involve some
credit risk to the Fund if the borrower defaults on its obligation and the
Fund is delayed or prevented from recovering the collateral.
 
                                      24
<PAGE>
 
                         THE FUNDS' INVESTMENT ADVISER
 
  The Funds' investment adviser is Loomis Sayles, One Financial Center,
Boston, Massachusetts 02111. Founded in 1926, Loomis Sayles is one of the
country's oldest and largest investment firms. Loomis Sayles' general partner
is indirectly owned by New England Investment Companies, L.P., a publicly-
traded limited partnership whose general partner is indirectly owned by
Metropolitan Life Insurance Company.
 
  In addition to selecting and reviewing the Funds' investments, Loomis Sayles
provides executive and other personnel for the management of the Funds. The
Funds' board of trustees supervises Loomis Sayles' conduct of the affairs of
the Funds.
     
  As of March 3, 1997, Loomis Sayles Employees' Profit Sharing Plan owned 87%
of the Intermediate Maturity Bond Fund and the Loomis-Sayles Funded Pension
Plan owned 28% and 38% of the Global Bond Fund and U.S. Government Securities
Fund, respectively. As of March 3, 1997, Loomis Sayles owned 64% of the
Investment Grade Bond Fund. Each of these shareholders may be deemed to
control the relevant Fund.      
 
  Daniel J. Fuss, President of the Trust and Executive Vice President of
Loomis Sayles, has served as the portfolio manager of the Bond Fund since its
commencement of investment operations in 1991, as the portfolio manager of the
High Yield Fund since its commencement of investment operations in 1996, and
as the portfolio manager of the Investment Grade Bond Fund since its
commencement of investment operations in 1997. Kathleen C. Gaffney has served
as associate portfolio manager of the High Yield Fund since its commencement
of investment operations in 1996. E. John deBeer, Vice President of the Trust
and of Loomis Sayles, has served as the portfolio manager of the Global Bond
Fund since its commencement of investment operations in 1991. Anthony J.
Wilkins, Vice President of the Trust and of Loomis Sayles, has served as the
portfolio manager of the Intermediate Maturity Bond Fund since its
commencement of investment operations in 1997. Martha F. Hodgman, Vice
President of the Trust and of Loomis Sayles, has served as the portfolio
manager of the Municipal Bond Fund since May 1993. John Hyll, Vice President
of the Trust and of Loomis Sayles, has served as the portfolio manager of the
Short-Term Bond Fund since its commencement of investment operations in 1992.
Kent P. Newmark, Vice President of the Trust and of Loomis Sayles, has served
as the portfolio manager of the U.S. Government Securities Fund since its
commencement of investment operations in 1991. Each of the foregoing has been
employed by Loomis Sayles for at least five years.
 
                                      25
<PAGE>
 
                                 FUND EXPENSES
     
  Each Fund pays Loomis Sayles a monthly investment advisory fee at the
following annual percentage rates of the Fund's average daily net assets:      
 
<TABLE>     
<CAPTION>
   FUND                                                                     RATE
   ----                                                                     ----
   <S>                                                                      <C>
   Bond.................................................................... .60%
   Global Bond............................................................. .60%
   High Yield.............................................................. .60%
   Intermediate Maturity Bond.............................................. .40%
   Investment Grade Bond................................................... .40%
   Municipal Bond.......................................................... .40%
   Short-Term Bond......................................................... .25%
   U.S. Government Securities.............................................. .40%
</TABLE>      
 
  In addition to the investment advisory fee, each Fund pays all expenses not
expressly assumed by Loomis Sayles, including taxes, brokerage commissions,
fees and expenses of the registering or qualifying the Fund's shares under
federal and state securities laws, fees of the Fund's custodian, transfer
agent, independent accountants and legal counsel, expenses of shareholders'
and trustees' meetings, expenses of preparing, printing and mailing
prospectuses to existing shareholders and fees of trustees who are not
directors, officers or employees of Loomis Sayles or its affiliated companies.
     
  Loomis Sayles has voluntarily agreed, for an indefinite period, to reduce
its advisory fees and/or bear other Fund expenses to the extent necessary to
limit Fund total annual operating expenses of the Institutional Class shares
of each Fund to the following annual percentage rate of the Fund's average net
assets:      
 
<TABLE>     
<CAPTION>
   FUND                                                                     RATE
   ----                                                                     ----
   <S>                                                                      <C>
   Bond.................................................................... .75%
   Global Bond............................................................. .90%
   High Yield.............................................................. .75%
   Intermediate Maturity Bond.............................................. .55%
   Investment Grade Bond................................................... .55%
   Municipal Bond.......................................................... .60%
   Short-Term Bond......................................................... .50%
   U.S. Government Securities.............................................. .60%
</TABLE>      
 
  Loomis Sayles may change or terminate these voluntary arrangements at any
time, but the Funds' Prospectus would be supplemented to describe the change.
 
  Loomis Sayles may pay certain broker-dealers and financial intermediaries
whose customers own shares of the Funds a continuing fee in an amount of up
 
                                      26
<PAGE>
 
to .25% annually of the value of Fund shares held for those customers'
accounts. These fees are paid by Loomis Sayles out of its own assets and are
not assessed against the Funds.
 
                            PORTFOLIO TRANSACTIONS
     
  Portfolio turnover considerations will not limit Loomis Sayles' investment
discretion in managing the Funds' assets. The Funds anticipate that their
portfolio turnover rates will vary significantly from time to time depending
on the volatility of economic and market conditions. High portfolio turnover
may involve higher costs and higher levels of taxable gains. Although it is
not possible to predict the portfolio turnover rate with certainty, Loomis
Sayles does not expect the portfolio turnover rate of the High Yield,
Intermediate Maturity Bond and Investment Grade Bond Funds to exceed 60%,
100%, and 60%, respectively.      
 
                            HOW TO PURCHASE SHARES
 
  An investor may make an initial purchase of shares of any Fund by submitting
a completed application form and payment to:
 
      Boston Financial Data Services
      P.O. Box 8314
      Boston, Massachusetts 02266-8314
      Attn: Loomis Sayles Funds
     
  The minimum initial investment for the Institutional Class of each Fund's
shares is $1 million in that Fund. However, this minimum investment does not
apply to shareholders of any Fund (or any other fund that is a series of
Loomis Sayles Funds) who have any account that has been in continuous
existence since December 31, 1996 ("Original Shareholders"). Original
Shareholders may open an Institutional Class account in another Fund with no
minimum investment if they purchase shares of the other Fund by exchanging
Institutional Class shares of a Fund (or any other fund that is a series of
Loomis Sayles Funds) in which they already own shares. Original Shareholders
who hold their accounts through financial intermediaries may avoid minimum
investment requirements only through this method. Original Shareholders whose
accounts are held directly with Boston Financial Data Services, Inc. ("BFDS"),
the shareholder servicing agent for State Street Bank and Trust Company
("State Street Bank"), may also open an Institutional Class account in a new
Fund by investing a minimum of $2,500. For additional information regarding
the eligibility of Original Shareholders to purchase Institutional Class
shares, call the Distributor toll-free at 800-633-3330. A $2,500 minimum
investment also applies to the current and retired trustees of the Trust,
investment advisory clients of Loomis Sayles (and their directors, officers
and employees), and current and retired employees of      
 
                                      27
<PAGE>

     
Loomis Sayles and the parents, spouses and children of the foregoing. The
minimum investment may be waived by Loomis Sayles in its sole discretion and
will be waived for any new shareholder in the Loomis Sayles Funds who
initially invests less than $1 million but signs a letter of intent stating
the shareholder's intention to bring his or her balance to $1 million within
six months of the initial purchase. Loomis Sayles reserves the right to
redeem, at net asset value, the accounts of shareholders that have signed a
letter of intent but fail to meet the minimum investment within the specified
time. Subsequent investments must be at least $50.      
     
  Shares of any Fund may be purchased by (i) cash, (ii) exchanging
Institutional Class shares of any Fund (or any other series of Loomis Sayles
Funds), (iii) exchanging securities on deposit with a custodian acceptable to
Loomis Sayles or (iv) a combination of such securities and cash. Loomis Sayles
will not approve the acceptance of securities in exchange for shares of any
Fund unless (1) Loomis Sayles, in its sole discretion, believes the securities
are appropriate investments for the Fund; (2) the investor represents and
agrees that all securities offered to the Fund can be resold by the Fund
without restriction under the Securities Act of 1933, as amended (the
"Securities Act") or otherwise; and (3) the securities are eligible to be
acquired under the Fund's investment policies and restrictions. No investor
owning 5% or more of a Fund's shares may purchase additional shares of that
Fund by exchange of securities.      
 
  In all cases Loomis Sayles reserves the right to reject any securities that
are proposed for exchange. Securities accepted by Loomis Sayles in exchange
for Fund shares will be valued in the same manner as the Fund's assets as
described below as of the time of the Fund's next determination of net asset
value after such acceptance. All dividends and subscription or other rights
which are reflected in the market price of accepted securities at the time of
valuation become the property of the Fund and must be delivered to the Fund
upon receipt by the investor from the issuer. A gain or loss for federal
income tax purposes would be realized upon the exchange by an investor that is
subject to federal income taxation, depending upon the investor's basis in the
securities tendered. An investor who wishes to purchase shares by exchanging
securities should obtain instructions by calling 800-633-3330.
 
  All purchases made by check should be in U.S. dollars and made payable to
State Street Bank and Trust Company. Third party checks will not be accepted.
When purchases are made by check or periodic account investment, redemption
will not be allowed until the investment being redeemed has been in the
account for 15 calendar days.
     
  Upon acceptance of an investor's order, BFDS opens an account, applies the
payment to the purchase of full and fractional Fund shares and mails a
statement of the account confirming the transaction.      
 
                                      28
<PAGE>
 
  After an account has been established, an investor may send subsequent
investments at any time directly to BFDS at the above address. The remittance
must be accompanied by either the account identification slip detached from a
statement of account or a note containing sufficient information to identify
the account, i.e., the Fund name and the investor's account number or name and
social security number.
 
  Subsequent investments can also be made by federal funds wire. Investors
should instruct their banks to wire federal funds to State Street Bank and
Trust Company, ABA #011000028. The text of the wire should read as follows:
"$ amount, STATE STREET BOS ATTN Mutual Funds. Credit Fund (Fund Name and
Retail Class), DDA #9904-622-9, Shareholder Name, Shareholder Account Number."
A bank may charge a fee for transmitting funds by wire.
 
  Each Fund and the Distributor reserve the right to reject any purchase
order, including orders in connection with exchanges, for any reason which the
Fund or the Distributor in its sole discretion deems appropriate. Although The
Funds do not presently anticipate that they will do so, each Fund reserves the
right to suspend or change the terms of the offering of its shares.
 
  The price an investor pays will be the per share net asset value next
calculated after a proper investment order is received by the Trust's transfer
or other agent or subagent. Shares of each Fund are sold with no sales charge.
The net asset value of each Fund's shares is calculated once daily as of the
close of regular trading on the New York Stock Exchange on each day the
Exchange is open for trading, by dividing the Fund's net assets by the number
of shares outstanding. Portfolio securities are valued at their market value
as more fully described in the Statement of Additional Information.
 
  The Distributor may accept telephone orders from broker-dealers who have
been previously approved by the Distributor. It is the responsibility of such
broker-dealers to promptly forward purchase or redemption orders to the
Distributor. Although there is no sales charge imposed by the Fund or the
Distributor, broker-dealers may charge the investor a transaction-based fee or
other fee for their services at either the time of purchase or the time of
redemption. Such charges may vary among broker-dealers but in all cases will
be retained by the broker-dealer and not remitted to the Fund.
     
  Each Fund, except for the Municipal Bond Fund and U.S. Government Securities
Funds, also offers an Retail Class of shares that has a $250,000 minimum
investment for certain categories of investors and bears higher expenses.
Because of its lower expenses, the Institutional Class of shares of each Fund
is expected to have a higher total return than the Retail Class of shares.      
 
 
                                      29
<PAGE>
 
                             SHAREHOLDER SERVICES
 
  The Funds offer the following shareholder services, which are more fully
described in the Statement of Additional Information. Explanations and forms
are available from BFDS. Telephone redemption and exchange privileges will be
established automatically when an investor opens an account unless an investor
elects on the application to decline the privileges. Other privileges must be
specifically elected. A signature guarantee will be required to establish a
privilege after an account is opened.
     
  FREE EXCHANGE PRIVILEGE. Institutional Class shares of any Fund may be
exchanged for Institutional Class shares of any other Fund (or any other fund
that is a series of Loomis Sayles Funds and that offers Institutional Class
shares) or for shares of certain money market funds advised by New England
Funds Management, L.P., an affiliate of Loomis Sayles. Exchanges may be made
by written instructions or by telephone, unless an investor elected on the
application to decline telephone exchange privileges. The exchange privilege
should not be viewed as a means for taking advantage of short-term swings in
the market, and the Funds reserve the right to terminate or limit the
privilege of any shareholder who makes more than four exchanges in any
calendar year. The Funds may terminate or change the terms of the exchange
privilege at any time, upon 60 days' notice to shareholders. Exchanges of
shares of the High Yield Fund purchased within one year before such exchanges
will be subject to a redemption fee of 2.00% of the amount exchanged. For
purposes of determining whether a redemption fee is payable with respect to
shares of the High Yield Fund purchased by exchange of shares of another Fund,
the one-year period shall be deemed to begin on the date of such purchase by
exchange.      
 
  RETIREMENT PLANS. The Funds' Institutional Class shares of the Funds may be
purchased by all types of tax-deferred retirement plans. Loomis Sayles makes
available retirement plan forms for IRAs.
 
  SYSTEMATIC WITHDRAWAL PLAN. If the value of an account is at least $25,000,
an investor may have periodic cash withdrawals automatically paid to the
investor or any person designated by the investor.
 
  AUTOMATIC INVESTMENT PLAN. Voluntary monthly investments of at least $50 may
be made automatically by pre-authorized withdrawals from an investor's
checking account.
 
                                      30
<PAGE>
 
                             HOW TO REDEEM SHARES
 
  An investor can redeem shares by sending a written request to Boston
Financial Data Services, Inc., P.O. Box 8314, Boston, Massachusetts 02266.
Proceeds from a written request may be sent to the investor in the form of a
check. As described below, an investor may also redeem shares by calling BFDS
at 800-626-9390. Proceeds resulting from a telephone redemption request can be
wired to an investor's bank account or sent by check in the name of the
registered owners to their record address.
 
  The written request must include the name of the Fund, the account number,
the exact name(s) in which the shares are registered, and the number of shares
or the dollar amount to be redeemed. All owners of the shares must sign the
request in the exact names in which the shares are registered (this appears on
an investor's confirmation statement) and should indicate any special capacity
in which they are signing (such as trustee or custodian or on behalf of a
partnership, corporation or other entity). Shareholders requesting that
redemption proceeds be wired to their bank accounts must provide specific wire
instructions.
 
  If (1) an investor is redeeming shares worth more than $50,000, (2) an
investor is requesting that the proceeds check be made out to someone other
than the registered owners or be sent to an address other than the record
address, (3) the account registration has changed within the last 30 days or
(4) an investor is instructing us to wire the proceeds to a bank account not
designated on the application, the investor must have his or her signature
guaranteed by an eligible guarantor. Eligible guarantors include commercial
banks, trust companies, savings associations, credit unions and brokerage
firms that are members of domestic securities exchanges. Before submitting the
redemption request, an investor should verify with the guarantor institution
that it is an eligible guarantor. Signature guarantees by notaries public are
not acceptable.
 
  If an investor has requested certificates for the investment, the investor
must enclose the certificates and a properly completed redemption form or
stock power. The Funds recommend that certificates be sent by registered mail.
 
  When an investor telephones a redemption request, the proceeds are wired to
the bank account previously chosen by the investor. A wire fee (currently $5)
will be deducted from the proceeds. A telephonic redemption request must be
received by BFDS prior to the close of regular trading on the New York Stock
Exchange. If an investor telephones a request to BFDS after the Exchange
closes or on a day when the Exchange is not open for business, BFDS cannot
accept the request and a new one will be necessary.
 
 
                                      31
<PAGE>
 
  If an investor decides to change the bank account to which proceeds are to
be wired, the investor must send in this change on the Service Options Form
with a signature guarantee. Telephonic redemptions may only be made if the
investor's bank is a member of the Federal Reserve System or has a
correspondent bank that is a member of the System. Unless an investor
indicates otherwise on the account application, BFDS will be authorized to act
upon redemption and exchange instructions received by telephone from the
investor or any person claiming to act as the investor's representative who
can provide BFDS with the investor's account registration and address as it
appears on the records of State Street Bank. BFDS will employ these or other
reasonable procedures to confirm that instructions communicated by telephone
are genuine; the Fund, State Street Bank, BFDS, the Distributor and Loomis
Sayles will not be liable for any losses due to unauthorized or fraudulent
instructions if these or other reasonable procedures are followed. For
information, consult BFDS. In times of heavy market activity, an investor who
encounters difficulty in placing a redemption or exchange order by telephone
may wish to place the order by mail as described above.
 
  The redemption price will be the net asset value per share next determined
after the redemption request and any necessary special documentation are
received by BFDS in proper form, less, in the case of the High Yield Fund, a
redemption fee of 2.00% of the amount redeemed with respect to shares of that
Fund purchased within one (1) year of such redemption. Loomis Sayles, in its
discretion, may waive the 2.00% redemption fee with respect to shares of the
High Yield Fund.
 
  Proceeds resulting from a written redemption request will normally be mailed
to an investor within seven days after receipt of the investor's request in
good order. Telephonic redemption proceeds will normally be wired to an
investor's bank on the first business day following receipt of a proper
redemption request. If an investor purchased shares by check and the check was
deposited less than 15 days prior to the redemption request, the Fund may
withhold redemption proceeds until the check has cleared.
 
  The Fund may suspend the right of redemption and may postpone payment for
more than seven days when the New York Stock Exchange is closed for other than
weekends or holidays, or if permitted by the rules of the SEC when trading on
the Exchange is restricted or during an emergency which makes it impracticable
for the Fund to dispose of its securities or to determine fairly the value of
its net assets, or during any other period permitted by the SEC for the
protection of investors.
 
  Loomis Sayles may pay certain broker-dealers and financial intermediaries
whose customers own shares of the Funds a continuing fee in an amount of up to
0.25% annually of the value of Fund shares held for those customers'
 
                                      32
<PAGE>
 
accounts. These fees are paid by Loomis Sayles out of its own assets and are
not assessed against the customers' accounts with the Funds.
 
                    CALCULATION OF PERFORMANCE INFORMATION
 
  The Funds' investment performance may from time to time be included in
advertisements about the Funds. "Yield" for each class of shares is calculated
by dividing the annualized net investment income per share during a recent 30-
day period by the maximum public offering price per share of the class on the
last day of that period.
 
  For purposes of calculating yield, net investment income is calculated in
accordance with SEC regulations and may differ from net investment income as
determined for financial reporting purposes. SEC regulations require that net
investment income be calculated on a "yield-to-maturity" basis, which has the
effect of amortizing any premiums or discounts in the current market value of
fixed income securities. The current dividend rate is based on net investment
income as determined for tax purposes, which may not reflect amortization in
the same manner.
 
  Yield is based on the price of the shares but does not reflect any
redemption fee in the case of the High Yield Fund.
 
  "Total return" for the one-, five- and ten-year periods (or for the life of
a class, if shorter) through the most recent calendar quarter represents the
average annual compounded rate of return on an investment of $1,000 in a Fund.
Total return may also be presented for other periods.
 
                DIVIDENDS, CAPITAL GAIN DISTRIBUTIONS AND TAXES
     
  The Bond, High Yield, U.S. Government Securities, Investment Grade Bond, and
Intermediate Maturity Bond Funds declare and pay dividends quarterly; the
Global Bond Fund declares and pays its net investment income to shareholders
as dividends annually; the Municipal Bond and Short-Term Bond Funds declare
dividends daily and makes payments monthly. Each Fund also distributes all of
its net capital gains realized from the sale of portfolio securities. Any
capital gain distributions are normally made annually, but may, to the extent
permitted by law, be made more frequently as deemed advisable by the trustees
of the Trust. The Trust's trustees may change the frequency with which the
Funds declare or pay dividends.      
 
  Dividends and capital gain distributions will automatically be reinvested in
additional shares of the same Fund on the record date unless an investor has
elected to receive cash.
 
                                      33
<PAGE>
 
  Each Fund intends to qualify as a regulated investment company under the
Internal Revenue Code of 1986, as amended. As such, so long as a Fund
distributes substantially all its net investment income and net capital gains
to its shareholders, the Fund itself does not pay any federal income tax to
the extent such income and gains are so distributed.
 
  Except in the case of income dividends from tax exempt bond interest paid by
the Municipal Bond Fund (see below), an investor's income dividends and short-
term capital gain distributions are taxable as ordinary income whether
distributed in cash or additional shares. Long-term capital gain distributions
from all Funds are taxable as long-term capital gains whether distributed in
cash or additional shares and regardless of how long an investor has owned
shares of the Fund.
 
  Each Fund (except the Municipal Bond Fund in the case of designated exempt-
interest dividends, as described below) is required to withhold 31% of any
redemption proceeds (including the value of shares exchanged) and all income
dividends and capital gain distributions it pays (1) if an investor does not
provide a correct, certified taxpayer identification number, (2) if the Fund
is notified that an investor has underreported income in the past, or (3) if
an investor fails to certify to the Fund that he or she is not subject to such
withholding.
 
  Dividends derived from interest on U.S. Government Securities may be exempt
from state and local taxes.
 
  State Street Bank will send investors and the IRS an annual statement
detailing federal tax information, including information about dividends and
distributions paid during the preceding year. An investor should keep this
statement as a permanent record. A fee may be charged for any duplicate
information requested.
 
MUNICIPAL BOND FUND
 
  Certain designated dividends paid by the Municipal Bond Fund that are
derived from interest on tax exempt bonds ("exempt-interest dividends") may be
excluded from gross income on federal tax returns. However, if an investor
receives social security or railroad retirement benefits, the investor may be
taxed on a portion of those benefits as a result of receiving tax exempt
income. Also, tax exempt income may be taken into account for the federal
alternative minimum tax.
 
  Other dividends and short term capital gains, if any, are taxable to the
investor as ordinary income whether received in cash or additional shares.
Distributions of long-term capital gains are taxable as long-term capital
gains
 
                                      34
<PAGE>
 
whether distributed in cash or additional shares, regardless of how long an
investor has held the shares.
 
  If at least 95% of the Fund's dividends are designated as exempt-interest
dividends, federal back-up withholding rules do not apply with respect to such
dividends.
 
  The federal exemption for exempt-interest dividends does not result in
exemption from state and local taxes. Distributions of exempt-interest
dividends may be exempt from local and state taxation to the extent they are
derived from the state or locality in which the investor resides. The Fund
will report annually on a state-by-state basis the source of income the Fund
received on tax exempt bonds that was paid out as dividends during the
preceding year.
 
NOTE: The foregoing summarizes certain tax consequences of investing in the
      Funds. Before investing, an investor should consult his or her own tax
      adviser for more information concerning the federal, state and local tax
      consequences of investing in, redeeming or exchanging Fund shares.
 
                                      35
<PAGE>
 
                                                                     APPENDIX A
 
                    DESCRIPTION OF BOND RATINGS ASSIGNED BY
                             STANDARD & POOR'S AND
                        MOODY'S INVESTORS SERVICE, INC.
 
STANDARD & POOR'S
 
                                      AAA
 
  This is the highest rating assigned by Standard & Poor's to a debt
obligation and indicates an extremely strong capacity to pay interest and
repay principal.
 
                                      AA
 
  Bonds rated AA also qualify as high quality debt obligations. Capacity to
pay interest and repay principal is very strong, and in the majority of
instances they differ from AAA issues only in small degree.
 
                                       A
 
  Bonds rated A have a strong capacity to pay interest and repay principal,
although they are somewhat more susceptible to the adverse effects of changes
in circumstances and economic conditions.
 
                                      BBB
 
  Bonds rated BBB are regarded as having an adequate capacity to pay interest
and repay principal. Whereas they normally exhibit adequate protection
parameters, adverse economic conditions or changing circumstances are more
likely to lead to a weakened capacity to repay principal and pay interest for
bonds in this category than for bonds in higher rated categories.
 
                                BB, B, CCC, CC
 
  Bonds rated BB, B, CCC and CC are regarded, on balance, as predominantly
speculative with respect to capacity to pay interest and repay principal in
accordance with the terms of the obligation. BB indicates the lowest degree of
speculation and CC the highest degree of speculation. While such bonds will
likely have some quality and protective characteristics, these are outweighed
by large uncertainties or major risk exposures to adverse conditions.
 
                                      32
<PAGE>
 
                                       C
 
  The rating C is reserved for income bonds on which no interest is being
paid.
 
                                       D
 
  Bonds rated D are in default, and payment of interest and/or repayment of
principal is in arrears.
 
  Plus (+) or Minus (-): The ratings from AA to B may be modified by the
addition of a plus or minus sign to show relative standing within the major
rating categories.
 
MOODY'S INVESTORS SERVICE, INC.
 
                                      AAA
 
    
  Bonds that are rated Aaa are judged to be of the best quality. They carry
the smallest degree of investment risk and are generally referred to as "gilt
edge." Interest payments are protected by a large, or by an exceptionally
stable, margin, and principal is secure. While the various protective elements
are likely to change, such changes as can be visualized are most unlikely to
impair the fundamentally strong position of such issues.     
 
                                      AA
 
    
  Bonds that are rated Aa are judged to be high quality by all standards.
Together with the Aaa group they comprise what are generally known as high
grade bonds. They are rated lower than the best bonds because margins of
protection may not be as large as in Aaa securities or fluctuation of
protective elements may be of greater amplitude or there may be other elements
present that make the long-term risks appear somewhat larger than in Aaa
securities.     
 
                                       A
 
  Bonds that are rated A possess many favorable investment attributes and are
to be considered as upper medium grade obligations. Factors giving security to
principal and interest are considered adequate, but elements may be present
that suggest a susceptibility to impairment sometime in the future.
 
                                      BAA
 
    
  Bonds that are rated Baa are considered as medium grade obligations; i.e.,
they are neither highly protected nor poorly secured. Interest payments and
principal security appear adequate for the present, but certain protective
elements may be lacking or may be characteristically unreliable over any great
length of time. Such bonds lack outstanding investment characteristics and, in
fact, have speculative characteristics as well.     
 
                                      33
<PAGE>
 
                                      BA
 
    
  Bonds which are rated Ba are judged to have speculative elements; their
future cannot be considered as well assured. Often, the protection of interest
and principal payments may be very moderate, and thereby not well safeguarded
during both good and bad times over the future. Uncertainty of position
characterizes bonds in this class.     
 
                                       B

  Bonds which are rated 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
 
    
  Bonds which are rated Caa are of poor standing. Such issues may be in
default or there may be present elements of danger with respect to principal
or interest.     
 
                                      CA
 
    
  Bonds which are rated Ca represent obligations which are speculative in a
high degree. Such issues are often in default or have other marked
shortcomings.     
 
                                       C
 
  Bonds which are rated C are the lowest rated class of bonds, and issues so
rated can be regarded as having extremely poor prospects of ever attaining any
real investment standing.
 
  Should no rating be assigned by Moody's, 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 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.
 
 
                                      34
<PAGE>
 
  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: Those bonds in the Aa, A, Baa, Ba and B groups which Moody's believes
      possess the strongest investment attributes are designated by the
      symbols Aa1, A1, Baa1, Ba1 and B1.
 
                                      35
<PAGE>
 
INVESTMENT ADVISER
Loomis, Sayles & Company, L.P.
One Financial Center Boston,
Massachusetts 02111
 
DISTRIBUTOR
Loomis Sayles Distributors, L.P.
One Financial Center Boston,
Massachusetts 02111
 
TRANSFER AND DIVIDEND PAYING AGENT
AND CUSTODIAN OF ASSETS
State Street Bank and Trust Company
Boston, Massachusetts 02102
 
SHAREHOLDER SERVICING AGENT FOR
STATE STREET BANK AND TRUST COMPANY
Boston Financial Data Services, Inc.
P.O. Box 8314
Boston, Massachusetts 02266
 
LEGAL COUNSEL
Ropes & Gray
One International Place
Boston, Massachusetts 02110
 
INDEPENDENT ACCOUNTANTS
Coopers & Lybrand L.L.P.
One Post Office Square
Boston, Massachusetts 02109
 
[LOGO OF LOOMIS SAYLES FUNDS APPEARS HERE]
<PAGE>
 
                           -----------------------
                           LOOMIS SAYLES FUNDS (TM)
                           =======================

                                     The Power of A Passion.(TM)
<PAGE>
 
[LOGO OF LOOMIS SAYLES FUNDS APPEARS HERE]

LOOMIS SAYLES FUNDS

STATEMENT OF ADDITIONAL INFORMATION
    
APRIL 1, 1997     
    
THIS STATEMENT OF ADDITIONAL INFORMATION IS NOT A PROSPECTUS.  THIS STATEMENT OF
ADDITIONAL INFORMATION RELATES TO THE PROSPECTUS OR PROSPECTUSES OF EACH SERIES
("FUND") OF LOOMIS SAYLES FUNDS DATED APRIL 1, 1997, AS REVISED FROM TIME TO
TIME.  EACH REFERENCE TO THE PROSPECTUS IN THIS STATEMENT OF ADDITIONAL
INFORMATION SHALL INCLUDE ALL OF THE FUNDS' CURRENT PROSPECTUSES, UNLESS
OTHERWISE NOTED.  THIS STATEMENT OF ADDITIONAL INFORMATION SHOULD BE READ IN
CONJUNCTION WITH THE APPLICABLE PROSPECTUS.  A COPY OF EACH PROSPECTUS MAY BE
OBTAINED FROM LOOMIS SAYLES FUNDS, ONE FINANCIAL CENTER, BOSTON, MASSACHUSETTS
02111.     
<PAGE>
 

TABLE OF CONTENTS

INVESTMENT OBJECTIVES, POLICIES AND RESTRICTIONS.....................
MANAGEMENT OF THE TRUST..............................................
INVESTMENT ADVISORY AND OTHER SERVICES...............................
PORTFOLIO TRANSACTIONS AND BROKERAGE.................................
DESCRIPTION OF THE TRUST.............................................
HOW TO BUY SHARES....................................................
NET ASSET VALUE......................................................
SHAREHOLDER SERVICES.................................................
  Open Accounts......................................................
  Systematic Withdrawal Plan.........................................
  Exchange Privilege.................................................
  IRAs...............................................................
REDEMPTIONS..........................................................
INCOME DIVIDENDS, CAPITAL GAIN DISTRIBUTIONS AND TAX STATUS
FINANCIAL STATEMENTS.................................................
CALCULATION OF YIELD AND TOTAL RETURN................................
PERFORMANCE COMPARISONS..............................................
PERFORMANCE DATA.....................................................
PORTFOLIO MANAGERS' PAST PERFORMANCE INFORMATION.....................
APPENDIX A -- PUBLICATIONS THAT MAY CONTAIN FUND
  INFORMATION........................................................
APPENDIX B -- ADVERTISING AND PROMOTIONAL LITERATURE.................
<PAGE>
 
               INVESTMENT OBJECTIVES, POLICIES AND RESTRICTIONS
    
     The investment objective and policies of each series ("Fund") of Loomis
Sayles Funds (the "Trust"), are summarized in the Prospectus under "Investment
Objectives and Policies" and "More Information About the Funds' Investments and
Risk Factors." The investment policies of each Fund set forth in the Prospectus
and in this Statement of Additional Information may be changed by the Funds'
adviser, subject to review and approval by the Trust's board of trustees,
without shareholder approval except that the investment objective of each Fund
as set forth in the Prospectus and any Fund policy explicitly identified as
"fundamental" may not be changed without the approval of the holders of a
majority of the outstanding shares of the relevant Fund (which in the Prospectus
and this Statement of Additional Information means the lesser of (i) 67% of the
shares of that Fund represented at a meeting at which 50% of the outstanding
shares are represented or (ii) more than 50% of the outstanding shares). Except
in the case of the 15% limitation on illiquid securities, the percentage
limitations set forth below and in the Prospectuses will apply at the time a
security is purchased and will not be considered violated unless an excess or
deficiency occurs or exists immediately after and as a result of such 
purchase.     

     In addition to its investment objective and policies set forth in the
Prospectus, the following investment restrictions are policies of each Fund (and
those marked with an asterisk are fundamental policies of each Fund):

Each Fund will not:

(1) Invest in companies for the purpose of exercising control or management.

*(2) Act as underwriter, except to the extent that, in connection with the
disposition of portfolio securities, it may be deemed to be an underwriter under
certain federal securities laws.

*(3) Invest in oil, gas or other mineral leases, rights or royalty contracts or
in real estate, commodities or commodity contracts.  (This restriction does not
prevent any Fund from engaging in transactions in futures contracts relating to
securities indexes, interest rates or financial instruments or options, or from
investing in issuers that invest or deal in the foregoing types of assets or
from purchasing securities that are secured by real estate.)

*(4) Make loans, except that each of the Mid-Cap Growth, Mid-Cap Value, Small
Cap Growth, Strategic Value, Investment Grade Bond and Intermediate Maturity
Bond Funds may lend its portfolio securities to the extent permitted under the
Investment Company Act of 1940 (the "1940 Act").  (For purposes of this
investment restriction, neither (i) entering into repurchase agreements nor (ii)
purchasing bonds, debentures, commercial paper, corporate notes and similar
evidences of indebtedness, which are a part of an issue to the public, is
considered the making of a loan.)
<PAGE>
 
(5) With respect to 75% of its assets, purchase any security (other than a U.S.
Government Security) if, as a result, more than 5% of the Fund's total assets
(taken at current value) would then be invested in securities of a single
issuer.  (For purposes of this restriction, the Municipal Bond Fund treats each
state and each separate political subdivision, agency, authority or
instrumentality of such state, each multistate agency or authority, and each
guarantor, if any, of obligations of any such issuer, as a separate issuer,
provided that the assets and revenues of the issuer are separate from those of
the government(s) that created the subdivision, agency, authority or
instrumentality.)

(6) With respect to 75% of its assets, acquire more than 10% of the outstanding
voting securities of an issuer.

(7) Pledge, mortgage, hypothecate or otherwise encumber any of its assets,
except that each Fund may pledge assets having a value not exceeding 10% of its
total assets to secure borrowings permitted by restriction (9) below.  (For the
purpose of this restriction, collateral arrangements with respect to options,
futures contracts and options on futures contracts and with respect to initial
and variation margin are not deemed to be a pledge or other encumbrance of
assets.)

*(8) Purchase any security (other than U.S. Government Securities) if, as a
result, more than 25% of the Fund's total assets (taken at current value) would
be invested in any one industry (in the utilities category, gas, electric, water
and telephone companies will be considered as being in separate industries.)
Tax-exempt securities issued by governments or political subdivisions of
governments and purchased by the Municipal Bond Fund are not subject to this
restriction, since such issuers are not members of any industry.

*(9) Borrow money in excess of 10% of its total assets (taken at cost) or 5% of
its total assets (taken at current value), whichever is lower, nor borrow any
money except as a temporary measure for extraordinary or emergency purposes.

(10) Purchase securities on margin (except such short term credits as are
necessary for clearance of transactions); or make short sales (except where, by
virtue of ownership of other securities, it has the right to obtain, without
payment of additional consideration, securities equivalent in kind and amount to
those sold).

(11) Participate on a joint or joint and several basis in any trading account in
securities.  (The "bunching" of orders for the purchase or sale of portfolio
securities with Loomis Sayles or accounts under its management to reduce
brokerage commissions, to average prices among them or to facilitate such
transactions is not considered a trading account in securities for purposes of
this restriction.)

(12) Purchase any illiquid security, including any security that is not readily
marketable, if, as a result, more than 15% of the Fund's net assets (based on
current value) would then be invested in such securities.

(13) Write or purchase puts, calls or combinations of both except that each Fund
may (1) acquire
<PAGE>
 
warrants or rights to subscribe to securities of companies issuing such warrants
or rights, or of parents or subsidiaries of such companies, (2) purchase and
sell put and call options on securities and (3) write, purchase and sell put and
call options on currencies and may enter into currency forward contracts.

*(14) Issue senior securities.  (For the purpose of this restriction none of
the following is deemed to be a senior security: any pledge or other encumbrance
of assets permitted by restriction (7) above; any borrowing permitted by
restriction (9) above; any collateral arrangements with respect to options,
futures contracts and options on futures contracts and with respect to initial
and variation margin; and the purchase or sale of options, forward contracts,
futures contracts or options on futures contracts.)

     Although the Funds have no current intention of investing in repurchase
agreements, they intend, based on the views of the staff of the Securities and
Exchange Commission (the "SEC"), to restrict their investments in repurchase
agreements maturing in more than seven days, together with other investments in
illiquid securities, to the percentage permitted by restriction (12) above.

U.S. GOVERNMENT SECURITIES

     U.S. Government Securities include direct obligations of the U.S. Treasury,
as well as securities issued or guaranteed by U.S. Government agencies,
authorities and instrumentalities, including, among others, the Government
National Mortgage Association, the Federal Home Loan Mortgage Corporation, the
Federal National Mortgage Association, the Federal Housing Administration, the
Resolution Funding Corporation, the Federal Farm Credit Banks, the Federal
Home Loan Bank, the Tennessee Valley Authority, the Student Loan Marketing
Association and the Small Business Administration.  More detailed information
about some of these categories of U.S. Government Securities follows.

      U.S. Treasury Bills--Direct obligations of the United States Treasury
which are issued in maturities of one year or less.  No interest is paid on
Treasury bills; instead, they are issued at a discount and repaid at full face
value when they mature.  They are backed by the full faith and credit of the
United States Government.

      U.S. Treasury Notes and Bonds--Direct obligations of the United States
Treasury issued in maturities that vary between one and forty years, with
interest normally payable every six months.  They are backed by the full faith
and credit of the United States Government.

      "Ginnie Maes"--Debt securities issued by a mortgage banker or other
mortgagee which represent an interest in a pool of mortgages insured by the
Federal Housing Administration or the Farmer's Home Administration or guaranteed
by the Veterans Administration.  The Government National Mortgage Association
("GNMA") guarantees the timely payment of principal and interest when such
payments are due, whether or not these amounts are collected by the issuer of
these certificates on the underlying mortgages.  An assistant attorney general
of the United States has rendered an opinion that the guarantee by GNMA is a
general obligation of the United States
<PAGE>
 
backed by its full faith and credit.  Mortgages included in single family or
multi-family residential mortgage pools backing an issue of Ginnie Maes have a
maximum maturity of up to 30 years.  Scheduled payments of principal and
interest are made to the registered holders of Ginnie Maes (such as the Fund)
each month.  Unscheduled prepayments may be made by homeowners, or as a result
of a default.  Prepayments are passed through to the registered holder of Ginnie
Maes along with regular monthly payments of principal and interest.

       "Fannie Maes"--The Federal National Mortgage Association ("FNMA") is a
government-sponsored corporation owned entirely by private stockholders that
purchases residential mortgages from a list of approved seller/servicers.
Fannie Maes are pass-through securities issued by FNMA that are guaranteed as to
timely payment of principal and interest by FNMA but are not backed by the full 
faith and credit of the United States Government.

      "Freddie Macs"--The Federal Home Loan Mortgage Corporation ("FHLMC") is a
corporate instrumentality of the United States Government.  Freddie Macs are
participation certificates issued by FHLMC that represent an interest in
residential mortgages from FHLMC's National Portfolio.  FHLMC guarantees the
timely payment of interest and ultimate collection of principal, but Freddie 
Macs are not backed by the full faith and credit of the United States
Government.

     As described in the Prospectus, U.S. Government Securities generally do not
involve the same credit risks associated with investments in other types of
fixed-income securities, although, as a result, the yields available from U.S.
Government Securities are generally lower than the yields available from
corporate fixed-income securities.  Like other fixed-income securities,
however, the values of U.S. Government Securities change as interest rates
fluctuate. Fluctuations in the value of portfolio securities will not affect
interest income on existing portfolio securities but will be reflected in the
Fund's net asset value.

WHEN-ISSUED SECURITIES

     As described in the Prospectus, each Fund may enter into agreements with
banks or broker-dealers for the purchase or sale of securities at an agreed-upon
price on a specified future date.  Such agreements might be entered into, for
example, when a Fund that invests in fixed income securities anticipates a
decline in interest rates and is able to obtain a more advantageous yield by
committing currently to purchase securities to be issued later.  When a Fund
purchases securities in this manner (i.e. on a when-issued or delayed-delivery
basis), it is required to create a segregated account with the Trust's custodian
and to maintain in that account cash or U.S. Government Securities in an amount
equal to or greater than, on a daily basis, the amount of the Fund's when-issued
or delayed-delivery commitments. Each Fund will make commitments to purchase on
a when-issued or delayed-delivery basis only securities meeting that Fund's
investment criteria. The Fund may take delivery of these securities or, if it is
deemed advisable as a matter of investment strategy, the Fund may sell these
securities before the settlement date. When the time comes to pay for when-
issued or delayed-delivery securities, the Fund will meet its obligations from
then available cash flow or the sale of securities, or from the sale of the 
when-issued or delayed-delivery securities themselves (which may have a value
greater or less than the Fund's payment obligation).
<PAGE>
 
CONVERTIBLE SECURITIES

     Convertible securities include corporate bonds, notes or preferred stocks
of U.S. or foreign issuers that can be converted into (that is, exchanged for)
common stocks or other equity securities.  Convertible securities also include
other securities, such as warrants, that provide an opportunity for equity
participation.  Because convertible securities can be converted into equity
securities, their values will normally vary in some proportion with those of the
underlying equity securities.  Convertible securities usually provide a higher
yield than the underlying equity, however, so that the price decline of a
convertible security may sometimes be less substantial than that of the
underlying equity security.

ZERO COUPON BONDS

     Zero coupon bonds are debt obligations that do not entitle the holder to
any periodic payments of interest either for the entire life of the obligation
or for an initial period after the issuance of the obligations.  Such bonds are
issued and traded at a discount from their face amounts.  The amount of the
discount varies depending on such factors as the time remaining until maturity
of the bonds, prevailing interest rates, the liquidity of the security and the
perceived credit quality of the issuer.  The market prices of zero coupon bonds
generally are more volatile than the market prices of securities that pay
interest periodically and are likely to respond to changes in interest rates to
a greater degree than do non-zero coupon bonds having similar maturities and
credit quality.  In order to satisfy a requirement for qualification as a
"regulated investment company" under the Internal Revenue Code (the "Code"),
each Fund must distribute each year at least 90% of its net investment income,
including the original issue discount accrued on zero coupon bonds.  Because a
Fund investing in zero coupon bonds will not on a current basis receive cash
payments from the issuer in respect of accrued original issue discount, the Fund
may have to distribute cash obtained from other sources in order to satisfy the
90% distribution requirement under the Code.  Such cash might be obtained from
selling other portfolio holdings of the Fund.  In some circumstances, such sales
might be necessary in order to satisfy cash distribution requirements even
though investment considerations might otherwise make it undesirable for the
Fund to sell such securities at such time.

REPURCHASE AGREEMENTS

     Each Fund may enter into repurchase agreements, by which the Fund purchases
a security and obtains a simultaneous commitment from the seller (a bank or, to
the extent permitted by the 1940 Act, a recognized securities dealer) to
repurchase the security at an agreed upon price and date (usually seven days or
less from the date of original purchase).  The resale price is in excess of the
purchase price and reflects an agreed upon market rate unrelated to the coupon
rate on the purchased security.  Such transactions afford the Funds the
opportunity to earn a return on temporarily available cash at minimal market
risk.  While the underlying security may be a bill, certificate of indebtedness,
note or bond issued by an agency, authority or instrumentality of the United
States Government, the obligation of the seller is not guaranteed by the U.S.
<PAGE>
 
Government and there is a risk that the seller may fail to repurchase the
underlying security.  In such event, the Fund would attempt to exercise rights
with respect to the underlying security, including possible disposition in the
market.  However, the Fund may be subject to various delays and risks of loss,
including (a) possible declines in the value of the underlying security during
the period while the Fund seeks to enforce its rights thereto, (b) possible
reduced levels of income and lack of income during this period and (c) inability
to enforce rights and the expenses involved in attempted enforcement.

RULE 144A SECURITIES

     Each of the Funds may purchase Rule 144A securities.  These are privately
offered securities that can be resold only to certain qualified institutional
buyers.  Rule 144A securities are treated as illiquid, unless Loomis Sayles has
determined, under guidelines established by the Trust's trustees, that the
particular issue of Rule 144A securities is liquid.  Under the guidelines,
Loomis Sayles considers such factors as: (1) the frequency of trades and quotes
for a security; (2) the number of dealers willing to purchase or sell the
security and the number of other potential purchasers; (3) dealer undertakings
to make a market in the security; and (4) the nature of the security and the
nature of the marketplace trades therefor.

TAX EXEMPT BONDS
    
     Tax exempt bonds include debt obligations issued to obtain funds for
various public purposes, including the construction of a wide range of public
facilities such as bridges, highways, hospitals, housing, mass transportation,
schools, streets, and water and sewer works. Other public purposes for which tax
exempt bonds may be issued include the refunding of outstanding obligations,
obtaining funds for general operating expenses, and obtaining funds to lend to
other public institutions and facilities.  In addition, prior to the Tax Reform
Act of 1986, certain debt obligations known as industrial development bonds
could be issued by or on behalf of public authorities to obtain funds to provide
privately operated housing facilities, sports facilities, convention or trade
show facilities, airport, mass transit, port or parking facilities, air or water
pollution control facilities and certain local facilities for water supply, gas,
electricity, or sewage or solid waste disposal. Such obligations are included
within the term tax exempt bonds if the interest paid thereon is, in the opinion
of bond counsel, exempt from federal income tax. Interest on certain industrial
development bonds used to fund the construction, equipment, repair or
improvement of privately operated industrial or commercial facilities may also
be exempt from federal income tax. The Tax Reform Act of 1986 eliminated some
types of tax exempt industrial revenue bonds but retained others under the
general category of "private activity bonds." The interest on so-called "private
activity bonds" is exempt from ordinary federal income taxation but is treated
as a tax preference item in computing a shareholder's alternative minimum tax
liability. The Municipal Bond Fund may invest up to 20% of its net assets in
private activity bonds.     

     The Municipal Bond Fund may not be a desirable investment for "substantial
users" of facilities financed by industrial development bonds or for "related
persons" of substantial users. See "Income Dividends, Capital Gain Distributions
and Tax Status."
<PAGE>
 
     The two principal classifications of tax exempt bonds are general
obligation bonds and limited obligation (or revenue) bonds.  General obligation
bonds are obligations involving the credit of an issuer possessing taxing power
and are payable from the issuer's general unrestricted revenues and not from any
particular fund or source.  The characteristics and method of enforcement of
general obligation bonds vary according to the law applicable to the particular
issuer, and payment may be dependent upon an appropriation by the issuer's
legislative body. Limited obligation bonds are payable only from the revenues
derived from a particular facility or class of facilities, or in some cases from
the proceeds of a special excise or other specific revenue source such as the
user of the facility.  Tax exempt industrial development bonds and private
activity bonds are in most cases revenue bonds and generally are not payable
from the unrestricted revenues of the issuer.  The credit and quality of such
bonds are usually directly related to the credit standing of the corporate user
of the facilities.  Principal and interest on such bonds is the responsibility
of the corporate user (and any guarantor).

     Prices and yields on tax exempt bonds are dependent on a variety of
factors, including general money market conditions, the financial condition of
the issuer, general conditions of the tax exempt bond market, the size of a
particular offering, the maturity of the obligation and the rating of the issue.
A number of these factors, including the ratings of particular issues,
are subject to change from time to time.  Information about the financial
condition of an issuer of tax exempt bonds may not be as extensive as that made
available by corporations whose securities are publicly traded.

     As noted in the Prospectus, obligations of issuers of tax exempt bonds are
subject to the provisions of bankruptcy, insolvency and other laws, such as the
Federal Bankruptcy Reform Act of 1978, affecting the rights and remedies of
creditors.  Congress or state legislatures may seek to extend the time for
payment of principal or interest, or both, or to impose other constraints upon
enforcement of such obligations.  There is also the possibility that, as a
result of litigation or other conditions, the power or ability of issuers to
meet their obligations for the payment of interest and principal on their tax
exempt bonds may be materially affected, or their obligations may be found to be
invalid or unenforceable.  Such litigation or conditions may from time to time
have the effect of introducing uncertainties in the market for tax exempt bonds
or certain segments thereof, or materially affecting the credit risk with
respect to particular bonds.  Adverse economic, business, legal or political
developments might affect all or a substantial portion of the Fund's tax exempt
bonds in the same manner.

     From time to time the Municipal Bond Fund may have less than 80% of its net
assets invested in tax exempt bonds (1) for defensive purposes when deemed
prudent in the judgment of Loomis Sayles to protect shareholders' capital or
(2) on a temporary basis for liquidity purposes or pending the investment of
proceeds from sales of Fund shares.  The ability of the Fund to invest in
securities other than tax exempt bonds is limited by a requirement of the Code
that at least 50% of the Fund's total assets be invested in tax exempt
securities at the end of each calendar quarter.  See "Income Dividends, Capital
Gain Distributions and Tax Status."

     The Municipal Bond Fund may purchase and sell portfolio investments to take
advantage of changes or anticipated changes in yield relationships, markets or
economic
<PAGE>
 
conditions.  The Fund may also sell tax exempt bonds due to changes in the
adviser's evaluation of the issuer or cash needs resulting from redemption
requests for Fund shares.  The secondary market for tax exempt bonds typically
has been less liquid than that for taxable debt securities, and this may affect
the Fund's ability to sell particular tax exempt bonds, especially in
periods when other investors are attempting to sell the same securities.

FOREIGN CURRENCY TRANSACTIONS

     Each of the Funds may invest in securities of foreign issuers and may enter
into forward foreign currency exchange contracts, or buy or sell options on
foreign currencies, in order to protect against uncertainty in the level of
future foreign exchange rates.  Since investment in securities of foreign
issuers will usually involve currencies of foreign countries, and since a Fund
may temporarily hold funds in bank deposits in foreign currencies during the
course of investment programs, the value of the assets of a Fund as measured in
United States dollars may be affected by changes in currency exchange rates and
exchange control regulations, and a Fund may incur costs in connection with
conversion between various currencies.

     A Fund may enter into forward contracts under two circumstances.  First,
when a Fund enters into a contract for the purchase or sale of a security
denominated or traded in a market in which settlement is made in a foreign
currency, it may desire to "lock in" the U.S. dollar price of the security.  By
entering into a forward contract for the purchase or sale, for a fixed amount
of dollars, of the amount of foreign currency involved in the underlying
transactions, the Fund will be able to protect itself against a possible loss
resulting from an adverse change in the relationship between the U.S. dollar and
the subject foreign currency during the period between the date on which the
investment is purchased or sold and the date on which payment is made or
received.

     Second, when Loomis Sayles believes that the currency of a particular
country may suffer a substantial decline against another currency, it may enter
into a forward contract to sell, for a fixed amount of another currency, the
amount of the first currency approximating the value of some or all of the
Fund's portfolio investments denominated in the first currency.  The precise
matching of the forward contract amounts and the value of the securities
involved will not generally be possible since the future value of such
securities in a currency will change as a consequence of market movements in the
value of those investments between the date the forward contract is entered into
and the date it matures.

     The Funds generally will not enter into forward contracts with a term of
greater than one year.

     Options on foreign currencies are similar to forward contracts, except that
one party to the option (the holder) is not contractually bound to buy or sell
the specified currency.  Instead, the holder has discretion whether to
"exercise" the option and thereby require the other party to buy or sell the
currency on the terms specified in the option.  Options transactions involve
transaction costs and, like forward contract transactions, involve the risk that
the other party may default on its obligations (if the options are not traded on
an established exchange) and the risk that
<PAGE>
 
expected movements in the relative value of currencies may not occur, resulting
in an imperfect hedge or a loss to the Fund.

     The Funds' ability to engage in transactions in currency forward contracts
and options may be limited by tax considerations.

     Each Fund, in conjunction with its transactions in forward contracts,
options and futures (including the International Equity, Worldwide and Global
Bond Funds' transactions in options on securities described below), will
maintain in a segregated account with its custodian cash or certain liquid
assets with a value, marked to market on a daily basis, sufficient to satisfy
the Fund's outstanding obligations under such contracts, options and futures.

OPTIONS

     As described in the Prospectus, each of the Funds, may for hedging purposes
or to enhance investment return, purchase and sell call and put options.

     An option entitles the holder to receive (in the case of a call option) or
to sell (in the case of a put option) a particular security at a specified
exercise price.  An "American style" option allows exercise of the option at any
time during the term of the option.  A "European style" option allows an option
to be exercised only at the end of its term.  Options may be traded on
or off an established securities exchange.

     If the holder of an option wishes to terminate its position, it may seek to
effect a closing sale transaction by selling an option identical to the option
previously purchased.  The effect of the purchase is that the previous option
position will be canceled.  A Fund will realize a profit from closing out an
option if the price received for selling the offsetting position is more than
the premium paid to purchase the option; the Fund will realize a loss from
closing out an option transaction if the price received for selling the
offsetting option is less than the premium paid to purchase the option.

     The use of options involves risks.  One risk arises because of the
imperfect correlation between movements in the price of options and movements in
the price of the securities that are the subject of the hedge.  The Fund's
hedging strategies will not be fully effective if such imperfect correlation
occurs.

     Price movement correlation may be distorted by illiquidity in the options
markets and the participation of speculators in such markets.  If an
insufficient number of contracts are traded, commercial users may not deal in
options because they do not want to assume the risk that they may not be able to
close out their positions within a reasonable amount of time.  In such
instances, options market prices may be driven by different forces than those
driving the market in the underlying securities, and price spreads between these
markets may widen.  The participation of speculators in the market enhances its
liquidity.  Nonetheless, the trading activities of speculators in the options
markets may create temporary price distortions unrelated to the market in the
underlying securities.
<PAGE>
 
     An exchange-traded option may be closed out only on an exchange which
generally provides a liquid secondary market for an option of the same series.
If a liquid secondary market for an exchange-traded option does not exist, it
might not be possible to effect a closing transaction with respect to a
particular option, with the result that the Fund would have to exercise the
option in order to accomplish the desired hedge.  Reasons for the absence of a
liquid secondary market on an exchange include the following: (i) there may be
insufficient trading interest in certain options; (ii) restrictions may be
imposed by an exchange on opening transactions or closing transactions or both;
(iii) trading halts, suspensions or other restrictions may be imposed with
respect to particular classes or series of options or underlying securities;
(iv) unusual or unforeseen circumstances may interrupt normal operations on an
exchange; (v) the facilities of an exchange or the Options Clearing Corporation
or other clearing organization may not at all times be adequate to handle
current trading volume; or (vi) one or more exchanges could, for economic or
other reasons, decide or be compelled at some future date to discontinue the
trading of options (or a particular class or series of options), in which event
the secondary market on that exchange (or in that class or series of options)
would cease to exist, although outstanding options on that exchange that had
been issued by the Options Clearing Corporation as a result of trades on that
exchange would continue to be exercisable in accordance with their terms.

     The successful use of options depends in part on the ability of Loomis
Sayles to forecast correctly the direction and extent of interest rate, stock
price or currency value movements within a given time frame.  To the extent
interest rates, stock prices or currency values move in a direction opposite to
that anticipated, the Fund may realize a loss on the hedging transaction
that is not fully or partially offset by an increase in the value of portfolio
securities.  In addition, whether or not interest rates or the relevant stock
price or relevant currency values move during the period that the Fund holds
options positions, the Fund will pay the cost of taking those positions (i.e.,
brokerage costs).  As a result of these factors, the Fund's total return for
such period may be less than if it had not engaged in the hedging transaction.

     An over-the-counter option (an option not traded on an established
exchange) may be closed out only with the other party to the original option
transaction.  While the Fund will seek to enter into over-the-counter options
only with dealers who agree to or are expected to be capable of entering into
closing transactions with the Fund, there can be no assurance that the Fund will
be able to liquidate an over-the-counter option at a favorable price at any time
prior to its expiration.  Accordingly, the Fund might have to exercise an over-
the-counter option it holds in order to achieve the intended hedge.  Over-the-
counter options are not subject to the protections afforded purchasers of listed
options by the Options Clearing Corporation or other clearing organization.

     The staff of the SEC has taken the position that over-the-counter options
should be treated as illiquid securities for purposes of each Fund's investment
restriction prohibiting it from investing more than 15% of its net assets in
illiquid securities.  The Funds intend to comply with this position.

     Income earned by a Fund from its hedging activities will be treated as
capital gain and, if
<PAGE>
 
not offset by net recognized capital losses incurred by the Fund, will be
distributed to shareholders in taxable distributions.  Although gain from
options transactions may hedge against a decline in the value of a Fund's
portfolio securities, that gain, to the extent not offset by losses, will be
distributed in light of certain tax considerations and will constitute a
distribution of that portion of the value preserved against decline.
    
SMALL COMPANIES     
    
     Investments in companies with relatively small capitalization may involve
greater risk than is usually associated with more established companies.  These
companies often have limited product lines, markets or financial resources and
they may be dependent upon a relatively small management group. Their securities
may have limited marketability and may be subject to more abrupt or erratic
movements in price than securities of companies with larger capitalization or
market averages in general.  The net asset values of funds that invest in
companies with smaller capitalization therefore may fluctuate more widely than
market averages.     

                            MANAGEMENT OF THE TRUST

     The trustees and officers of the Trust and their principal occupations
during the past five years are as follows:

      EARL W. FOELL--Trustee.  43 Black Horse Lane, Cohasset, Massachusetts.
Retired; formerly Editor in-Chief, World Monitor Magazine and Editor-in-Chief,
The Christian Science Monitor.

     RICHARD S. HOLWAY--Trustee.  1314 Seaspray Lane, Sanibel, Florida.
Retired; formerly, Vice President, Loomis Sayles.  Director, Sandwich
Cooperative Bank.

     TERRY R. LAUTENBACH--Trustee.  Shennamere Road, Darien, Connecticut.
Retired; formerly Senior Vice President, International Business Machines
Corporation.  Director, Air Products and Chemicals, Inc., Melville Corp., and
Varian Associates, Inc.

     MICHAEL T. MURRAY--Trustee.  404 N. Western Ave., Lake Forest, Illinois.
Retired; formerly, Vice President, Loomis Sayles.

     *DANIEL J. FUSS--President and Trustee.  Executive Vice President and
Director, Loomis Sayles.
         
    
     SHEILA M. BARRY--Secretary and Compliance Officer.  Assistant General
Counsel and Vice President, Loomis Sayles.  Formerly, Senior Counsel and Vice
President, New England Funds, L.P.     

- --------------------------------
* Trustee deemed an "interested person" of the Trust, as defined by the 1940
Act.
<PAGE>
 
        ROBERT J. BLANDING--Executive Vice President.  465 First Street West,
Sonoma, California.  President, Chairman, Director and Chief Executive Officer,
Loomis Sayles.

     JEROME A. CASTELLINI--Vice President.  Three 1st National Plaza, Chicago,
Illinois. Vice President and Director, Loomis Sayles.

     MARY C. CHAMPAGNE--Vice President.  1533 N. Woodward, Bloomfield Hills,
Michigan. Vice President, Loomis Sayles; formerly, portfolio manager, NBD Bank.

     E. JOHN DEBEER--Vice President.  Vice President, Loomis Sayles.
    
     PAUL H. DREXLER--Vice President.  Vice President, Loomis Sayles; formerly
Deputy Manager, Brown Brothers Harriman & Co.     

     WILLIAM H. EIGEN, JR.--Vice President.  Vice President, Loomis Sayles;
formerly Vice President, INVESCO Funds Group and Vice President, The Travelers
Corp.
    
     CHRISTOPHER R. ELY--Vice President.  Vice President, Loomis Sayles;
formerly Senior Vice President and portfolio manager, Keystone Investment
Management Company, Inc.     

     QUENTIN P. FAULKNER--Vice President.  Vice President, Loomis Sayles.
    
     PHILIP C. FINE--Vice President.  Vice President, Loomis Sayles; formerly
Vice President and portfolio manager, Keystone Investment Management Company,
Inc.     

     MARTHA F. HODGMAN--Vice President.  Vice President, Loomis Sayles.

     MARK W. HOLLAND--Treasurer.  Vice President--Finance and Administration and
Director, Loomis Sayles.

     JOHN HYLL--Vice President.  35 North Lake Avenue, Pasadena, California.
Vice President, Loomis Sayles.
         
    
     JEFFREY L. MEADE--Vice President.  Executive Vice President, Chief
Operating Officer and Director, Loomis Sayles.     
    
     KENT P. NEWMARK--Vice President.  555 California Street, San Francisco,
California. Vice President and Director, Loomis Sayles.     
    
     SCOTT S. PAPE--Vice President.  Vice President, Loomis Sayles.     

     JEFFREY C. PETHERICK.--Vice President.  1533 N. Woodward, Bloomfield Hills,
Michigan. Vice President, Loomis Sayles.
    
     PHILIP J. SCHETTEWI--Vice President.  Vice President and Director, Loomis
Sayles.     
<PAGE>
 
     
     DAVID L. SMITH--Vice President.  Vice President, Loomis Sayles; formerly
Vice President and portfolio manager, Keystone Investment Management Company,
Inc.     
    
     SANDRA P. TICHENOR--Vice President.  465 First Street West, Sonoma,
California. General Counsel, Vice President, Secretary and Clerk, Loomis Sayles.
Formerly, Partner, Heller, Ehrman, White & McAuliffe.     

     JEFFREY W. WARDLOW--Vice President.  1533 N. Woodward, Bloomfield Hills,
Michigan. Vice President, Loomis Sayles.
    
     GREGG D. WATKINS--Vice President.  Vice President, Loomis Sayles.     
    
     ANTHONY J. WILKINS--Vice President.  Vice President and Director, Loomis
Sayles.     
    
     JOHN F. YEAGER III--Vice President.  Vice President, Loomis Sayles; 
formerly Vice President--Marketing, INVESCO Funds Group and Assistant
Comptroller, INVESCO Capital Management.     

     Previous positions during the past five years with Loomis Sayles are
omitted, if not materially different.
    
     Except as indicated above, the address of each trustee and officer of the
Trust affiliated with Loomis Sayles is One Financial Center, Boston,
Massachusetts.  The Trust pays no compensation to its officers or to the
trustees listed above who are directors, officers or employees of Loomis Sayles.
Each trustee who is not a director, officer or employee of Loomis Sayles is
compensated at the rate of $1,250 per fund per annum.     
<PAGE>
 
                               COMPENSATION TABLE
                      for the year ended December 31, 1996
<TABLE>    
<CAPTION> 
                                                                             (5)
                                                                             Total
                                         (3)                  (4)            Compensation
                          (2)            Pension or           Estimated      From Trust and
(1)                       Aggregate      Retirement Benefits  Annual         Fund Complex*
Name of Person,           Compensation   Accrued as Part of   Benefits upon  Paid to
Position                  From Trust     Fund Expenses        Retirement     Trustee
- -----------------------   -----------    ------------------   ------------   --------------
<S>                       <C>            <C>                  <C>            <C>
Earl W. Foell, Trustee..    $12,812.50         N/A                 N/A           $12,812.50
Richard S. Holoway,
 Trustee................    $12,812.50         N/A                 N/A           $12,812.50
Terry R. Lautenbach,
 Trustee................    $12,812.50         N/A                 N/A           $12,812.50
Michael T. Murray,
 Trustee................    $12,812.50         N/A                 N/A           $12,812.50

</TABLE>     
- -----------
* No Trustee receives any compensation from any mutual funds affiliated with
Loomis Sayles, other than the Trust.
    
     As of February 10, 1997 the officers and trustees of the Trust owned
beneficially shares of each Fund as follows: 11,766.561 shares of the Growth
Fund, 18,055.379 shares of the Core Value Fund, 29,531.022 shares of the Small
Cap Value Fund, 7,682.542 shares of the International Equity Fund, 4.704 shares
of the Worldwide Fund, 205,329.176 shares of the Bond Fund, 17,358.674 shares of
the Global Bond Fund, 2,165.523 shares of the U.S. Government Securities Fund,
54,349.330 shares of the Municipal Bond Fund, 49,901.454 shares of the Short-
Term Bond Fund, 50,964.392 shares of the High Yield Fund, 5.061 shares of
the Investment Grade Bond Fund, 4.883 of the Mid-Cap Value Fund, and 1,000.000
shares of the Small Cap Growth Fund. These amounts include shares held by the
Loomis Sayles Employees' Profit Sharing Plan (the "Profit Sharing Plan") for the
accounts of officers and trustees of the Trust, but exclude all other holdings
of the Profit Sharing Plan and the Loomis-Sayles Funded Pension Plan (the
"Pension Plan"). As of February 10, 1997, the Pension Plan owned 20.59% of the
High Yield Fund's and, 73.42% of the Investment Grade Bond Fund's outstanding
Institutional Class shares, respectively. As of February 10, 1997, the Profit
Sharing Plan owned the following percentages of the outstanding Institutional
Class shares of the indicated Funds: 17.30% of the Core Value Fund, 9.07% of the
Global Bond Fund, 25.51% of the Growth Fund, 13.40% of the High Yield Fund,
87.20% of the Intermediate Maturity Bond Fund, 6.60% of the International Equity
Fund, 15.17% of the Investment Grade Bond Fund, 91.80% of the Mid-Cap Growth
Fund, 33.96% of the Mid-Cap Value Fund, 13.13% of the Short-Term Bond Fund,
58.65% of the Small Cap Growth Fund, 8.53% of the Small Cap Value Fund, 99.56%
of the Strategic Value Fund, 8.12% of the U.S. Government Securities Fund, and
26.70% of the Worldwide Fund. As of February 10, 1997, the Pension Plan owned
100.00% of each of the Intermediate Maturity Bond Fund's, the Strategic Value
Fund's and the Worldwide Fund's outstanding Retail Class shares. These amounts
include shares of the Profit Sharing Plan held for the accounts of employees and
former     
<PAGE>
 
employees of Loomis Sayles who are trustees or officers of the Trust.  The
trustee of the Pension Plan is Fleet Investment Management.  The Pension Plan's
Advisory Committee, which is composed of the same individuals listed below as
trustees of the Profit Sharing Plan, has the sole voting and investment power
with respect to the Pension Plan's shares.  The trustees of the Profit Sharing
Plan are E. John deBeer, Quentin P. Faulkner, Sandra P. Tichenor, Larry K. Shaw,
Kathleen C. Gaffney, Mark W. Holland, and Patrick P. Hurley, all of whom are
officers and employees of Loomis Sayles and (except for Messrs. Hurley and Shaw
and Ms. Gaffney) trustees or officers of the Trust.  Plan participants are
entitled to exercise investment and voting power over shares owned of record by
the Profit Sharing Plan.  Shares not
<PAGE>
 
     
voted by participants are voted in the same proportion as the shares voted by
the voting participants.  The address for the Profit Sharing Plan and the
Pension Plan is One Financial Center, Boston, Massachusetts.  At the date of
this Statement of Additional Information, no officer or trustee, and as of
February 10, 1997, except as noted below, no person, owns more than 5% of the
outstanding shares of any Fund.     
    
                           INSTITUTIONAL CLASS SHARES     
<TABLE>    
<CAPTION>
                                                                     PERCENTAGE OF
SHAREHOLDER                                      ADDRESS              SHARES HELD
- -----------                                      -------             ------------- 
<S>                                    <C>                           <C>
 
BOND FUND
 
Charles Schwab & Co. Inc.              101 Montgomery St.                    41.22%
                                       San Francisco, CA 94104
 
Charles Schwab & Co. Inc.              101 Montgomery St.                     8.19%
                                       San Francisco, CA 94104
 
CORE VALUE FUND
 
Loomis Sayles Employees                One Financial Center                  17.30%
Profit Sharing Plan                    Boston, MA 02111
 
Olsen & Co.                            P.O. Box 92800                        14.95%
C/O A/C 1556802070                     Rochester, NY 14692
Attn: Mutual Fund Ops
 
Asbestos Workers Local                 C/O Loomis Syales & Co. Inc.           8.34%
#84 Pension Fund                       1593 North Woodward, Ste 300
                                       Bloomifield Hills, MI 48304
GLOBAL BOND FUND
 
Olsen & Co.                            P.O. Box 92800                        28.68%
C/O A/C 07-920-1556802                 Rochester, NY 14692
Att: Mutual Fund Ops
 
Northwest Bank MN NA                   P.O. Box 1450 NW 8477                 19.98%
C/F Desert States UFCW Union           Minneapolis, MN 55480
Employees Pension AC#1327982D
 
Fleet National Bank TTEE               P.O. Box 92800                        15.26%
Kaman Corp Master Trust Fixed          Rochester, NY 14692
Income Fund U/A/D 10-1-96
Attn A/C# 0004884410
</TABLE>      
<PAGE>
 
    
<TABLE> 
<CAPTION> 
<S>                                    <C>                           <C>
 
Loomis Sayles                          One Financial Center                   9.07%
Employees Profit Sharing Plan          Boston, MA 02111
 
Charles Schwab & Co. Inc.              101 Montgomery St.                     8.83%
                                       San Francisco, CA 94104
 
GROWTH FUND
 
Loomis Sayles Employees                One Financial Center                  25.51%
Profit Sharing Plan                    Boston, MA 02111
 
Olsen & Co.                            P.O. Box 92800                        13.48%
C/O A/C 07 925 4076300                 Rochester, NY 14692
 
Comerica Bank Cust                     P.O. Box 75000 MC 3446                 7.25%
FBO Grosse Pointe Woods                Detroit, MI 48275
Employees Retirement System
 
First of America Bank --               P.O. Box 4042                          5.24%
Michigan FBO                           Kalamazoo, MI 49003
International Assoc of Machinists
& Aerospace Workers Local Lodge
# 2848 Defined Benefit Pension Plan
 
HIGH YIELD FUND
 
Loomis, Sayles & Company, L.P.         One Financial Center                  20.59%
                                       Boston, MA 02111
 
Daniel J. Fuss                         44 Longfellow Road                    20.59%
                                       Wellesley, MA 02181
 
Loomis Sayles                          One Financial Center                  13.40%
Employees Profit Sharing Plan          Boston, MA 02111
 
MetroMed Anestheseology                770 Lexington Avenue                   8.07%
K. Rosenbaum, M.D., Trustee            New York, NY 10021           
 
INTERMEDIATE MATURITY BOND FUND
 
Loomis Sayles                          One Financial Center                  87.20%
Employees Profit Sharing Plan          Boston, MA 02111
 
</TABLE>     
<PAGE>
 
     
<TABLE>
<CAPTION> 
<S>                                    <C>                           <C>

David B. Tukel                         31725 Nottingham                       5.49%
Debra L. Tukel JT TEN                  Franklin, MI 48025
 
Pomona College                         Alexander Hall                         5.36%
                                       550 N. College Ave.
                                       Claremont, CA 91711
 
INTERNATIONAL EQUITY FUND
 
Comerica Bank FBO                      P.O. Box 75000 MC 3446                11.10%
City of Livonia Employee               Detroit, MI 48275
Retirement System A/C 82150B
 
Olsen & Co.                            P.O. Box 92800                         8.64%
C/O A/C 07 925 4076800                 Rochester, NY 14692
Att: Mutual Fund Ops
 
Misericordia Home                      6300 N. Ridge Ave.                     8.18%
                                       Chicago, IL 60660
 
Bank of New York                       P.O. Box 30772                         6.68%
Western Tr  FBO IATSE                  Los Angeles, CA 90030
Att: Mutual Fund 316226721
 
Loomis Sayles                          One Financial Center                   6.60%
Employees Profit Sharing Plan          Boston, MA 02111
 
 
INVESTMENT GRADE BOND FUND
 
Loomis Sayles & Company, L.P.          Attn: Paul Sherba                     73.42%
                                       One Financial Center
                                       Boston, MA 02111
 
Loomis Sayles                          One Financial Center                  15.17%
Employees Profit Sharing Plan          Boston, MA 02111
 
Pomona College                         Alexander Hall                         5.73%
                                       550 N. College Ave.
                                       Claremont, CA 91711
 
MID-CAP GROWTH FUND
 
Loomis Sayles                          One Financial Center                  91.80%
Employees Profit Sharing Plan          Boston, MA 02111
 
</TABLE>     
<PAGE>
 
    
<TABLE>
<CAPTION> 
<S>                                    <C>                           <C>
MID-CAP VALUE FUND
 
Loomis Sayles                          One Financial Center                  33.96%
Employees Profit Sharing Plan          Boston, MA 02111
 
East Jordan Iron Works Inc.            P.O. Box 439                          19.97%
Retirement Trust                       East Jordan, MI 49727
 
John W. George Jr. Trustee             590 Renaud                            12.92%
John W. George Jr. Trust               Grosse Pointe, MI 48236
U/A/D 12/6/90
 
Kathleen Carpenter, M.D.               612 South Bay Shore                    6.66%
William R Church, M.D., TTEES          Elk Rapids, MI  49629
Grand Traverse Radiologist's
PC PSP
 
Floyd Tukel, Trustee                   2862 Chestnut Run Dr.                  5.99%
Drs. Butler & Tukel                    Bloomfield Hills, MI 48302
Ophthamology PC
Employees Profit Sharing Trust
 
MUNICIPAL BOND FUND
 
Sally B. Searle                        Kinship Capital                       13.49%
                                       400 Skokie Blvd.; Ste. 675
                                       Northbrook, IL  60062
 
Ann A. Morris Trustee                  General Delivery                      12.99%
Ann A. Morris Trust                    Lummi Island, WA 98262
 
John W. George Jr. Trustee             590 Renaud                             5.56%
John W. George Jr. Trust               Grosse Pointe, MI 48236
U/A/D 12/6/90
 
SHORT-TERM BOND FUND
 
Charles Schwab & Co. Inc.              101 Montgomery St.                    15.53%
                                       San Francisco, CA 94104
 
John W. George Jr. Trustee             590 Renaud                            13.78%
John W. George Jr. Trust               Grosse Pointe, MI 48236
U/A/D 12/6/90
 
</TABLE>     
<PAGE>
 
     
<TABLE>
<CAPTION> 
<S>                                    <C>                           <C>

Loomis Sayles                          One Financial Center                  13.13%
Employees Profit Sharing Plan          Boston, MA 02111
 
SMALL CAP GROWTH FUND
 
Loomis Sayles                          One Financial Center                  58.65%
Employees Profit Sharing Plan          Boston, MA 02111
 
YMCA of Greater Boston                 316 Huntington Ave.                   25.84%
                                       Boston, MA 02216
 
National Investor Services Corp.       55 Water St.                          10.02%
For the Exclusive Benefit of           New York, NY 10041
Our Customers
 
SMALL CAP VALUE FUND
 
Smith Barney Inc.                      333 West 34th St.; 7th Fl.            11.55%
Book Entry Account                     New York, NY 10001
 
Loomis Sayles                          One Financial Center                   8.53%
Employees Profit Sharing Plan          Boston, MA 02111
 
Charles Schwab & Co. Inc.              101 Montgomery St.                     6.70%
                                       San Francisco, CA 94104
 
F M Kirby                              17 Dehart St.; P.O. Box 151            5.99%
                                       Morristown, NJ 07963
 
STRATEGIC VALUE FUND
 
Loomis Sayles                          One Financial Center                  99.56%
Employees Profit Sharing Plan          Boston, MA 02111
 
U.S. GOVERNMENT SECURITIES FUND
 
Olsen & Co.                            P.O. Box 92800                        38.89%
C/O A/C 07-920-1556802                 Rochester, NY 14692
Att: Mutual Fund Ops
 
Loomis Sayles                          One Financial Center                   8.12%
Employees Profit Sharing Plan          Boston, MA 02111
 
National City Bank Columbus            P.O. Box 94777                         6.79%
Trustee Columbus Distributing          Cleveland, OH 44101
Co. PSP

</TABLE>      
<PAGE>
 
     
<TABLE> 
<CAPTION> 
<S>                                    <C>                           <C>

WORLDWIDE FUND
 
Olsen & Co.                            P.O. Box 92800                        71.51%
C/O A/C 10-07-920-1556802              Rochester, NY 14692
 
Loomis Sayles                          One Financial Center                  26.70%
Employees Profit Sharing Plan          Boston, MA 02111
</TABLE>      

                             RETAIL CLASS SHARES     
    
<TABLE> 
<CAPTION>
                                                                  PERCENTAGE OF
SHAREHOLDER                         ADDRESS                        SHARES HELD
- -----------                         -------                        ----------
<S>                                 <C>                           <C>
 
BOND FUND
 
UMBSC & Co.                         P.O. Box 419260                      11.71%
FBO The Episcopal                   Kansas City, MO 64141
Diocese of Kansas
370164014
 
National Investor Services Corp.    55 Water Street                       9.91%
For the Exclusive Benefit of        New York, NY 10041
Our Customers                       
 
 
CORE VALUE FUND
 
NFSC FEBO #110-415740               55 Falmouth Rd                       54.74%
Christa M. Gaehde                   Arlington, MA 02174
FMT CO TTEE FRP MP A/C
Donaldson Lufkin Jenrette           P.O. Box 2052                        23.35%
Securities Corporation Inc.         Jersey City, 07303
 
Charles Schwab & Co. Inc.           101 Montgomery St.                   17.09%
Attn. Mutual Fund Dept.             San Francisco, CA 94104
 
GLOBAL BOND FUND
 
Charles Schwab & Co. Inc.           101 Montgomery St.                   15.53%
Attn. Mutual Fund Dept.             San Francisco, CA 94104
A/C 8700012578-8
 
Charles Schwab & Co. Inc.           101 Montgomery St.                   15.01%
Attn. Mutual Fund Dept.             San Francisco, CA 94104
A/C 8700012576-2
 
</TABLE>     
<PAGE>
 
    
<TABLE>
<CAPTION> 

<S>                                 <C>                            <C>

NFSC FEBO # X42-090735              2219 Calusa Lakes Blvd.               8.21%
Peter S. Price                      Nokomis, FL 34275
 
Donaldson Lufkin Jenrette           P.O. Box 2052                         7.07%
Securities Corporation Inc.         Jersey City, 07303
 
NFSC FEBO #153-307734               2404 Angle Ct.                        5.53%
FMT CO CUST IRA Rollover            Decatur, IL 62521

GROWTH FUND
 
Charles Schwab & Co. Inc.           101 Montgomery St.                   31.00%
Attn. Mutual Fund Dept.             San Francisco, CA 94104
 
Donaldson Lufkin Jenrette           P.O. Box 2052                        10.29%
Securities Corporation Inc.         Jersey City, 07303
A/C 7710000004-3
 
Donaldson Lufkin Jenrette           P.O. Box 2052                         9.33%
Securities Corporation Inc.         Jersey City, 07303
A/C 7710000002-7
 
National Investor Services Corp.    55 Water Street                       8.53%
For the Exclusive Benefit of        New York, NY 10041
Our Customers                       Mutual Funds Dept. 32nd Floor
 
HIGH YIELD FUND
 
NFSC FEBO # 125-254282              533 Coal Creek Lane                  19.13%
FMT CO CUST IRA                     Louisville, CO 80027
FBO Bruce R. Becker
 
Donaldson Lufkin Jenrette           P.O. Box 2052                        19.04%
Securities Corporation Inc.         Jersey City, 07303
A/C 4340000003-6
 
Donaldson Lufkin Jenrette           P.O. Box 2052                        11.14%
Securities Corporation Inc.         Jersey City, 07303
A/C 1000020331-8
 
NFSC FEBO # X67-191930              P.O Box 190444                        9.62%
Martha I. Bennett Irrev. Trust      Dallas, TX 75219
Paul Wilton Bennett, Trustee
U/A 08/24/84
 
</TABLE>     
<PAGE>
 
     
<TABLE>
<CAPTION> 
<S>                                 <C>                            <C>

Charles Schwab & Co. Inc.           101 Montgomery St.                    9.29%
Attn. Mutual Fund Dept.             San Francisco, CA 94104
 
Donaldson Lufkin Jenrette           P.O. Box 2052                         6.90%
Securities Corporation Inc.         Jersey City, 07303
A/C 4340000000-7
 
NFSC FEBO # 175-135704              5305 Bennett Rd.                      6.43%
FMT CO CUST IRA                     Chattanooga, TN 37412
FBO James J. Hinkle
 
INTERMEDIATE MATURITY BOND FUND
 
Loomis Sayles & Co. L.P             One Financial Center                100.00%
Attn: Paul Sherba                   Boston, MA 02111
 
INTERNATIONAL EQUITY FUND
 
Charles Schwab & Co. Inc.           101 Montgomery St.                   83.84%
Attn. Mutual Fund Dept.             San Francisco, CA 94104
 
National Investor Services Corp.    55 Water Street                      13.26%
For the Exclusive Benefit of        New York, NY 10041
Our Customers                       Mutual Funds Dept. 32nd Floor
 
INVESTMENT GRADE BOND FUND
 
Carolyn D. Cavanaugh                3141 Pine Branch Drive               99.80%
                                    Kissimmee, FL 34741

MID-CAP GROWTH FUND
 
Tricia H. Mills CUST                155 N. Lake #1030                    49.89%
Tyra Hunter Mills                   Pasadena, CA 91101
Unif Trans Min Act -CA
 
Tricia H. Mills CUST                155 N. Lake #1030                    49.89%
Brigitte Easton Mills               Pasadena, CA 91101
Unif Trans Min Act -CA
 
MID-CAP VALUE FUND
 
Donaldson Lufkin Jenrette           P.O. Box 2052                        99.97%
Securities Corporation Inc.         Jersey City, 07303

</TABLE>      
 
<PAGE>
 
     
<TABLE> 
<CAPTION> 
<S>                                 <C>                            <C>

SHORT-TERM BOND FUND
 
Donaldson Lufkin Jenrette           P.O. Box 2052                        35.20%
Securities Corporation Inc.         Jersey City, 07303
A/C 7700000000-4
 
Donaldson Lufkin Jenrette           P.O. Box 2052                         9.54%
Securities Corporation Inc.         Jersey City, 07303
 
Donaldson Lufkin Jenrette           P.O. Box 2052                        16.60%
Securities Corporation Inc.         Jersey City, 07303
A/C 1000020323-7
 
Donaldson Lufkin Jenrette           P.O. Box 2052                         9.54%
Securities Corporation Inc.         Jersey City, 07303
A/C 1000020327-9
 
NFSC FEBO # 137-326321              8310 Holly Haven Lane                 7.78%
Stephanie S. Lord Cust              Fairfax Station, VA 22039
Matthew Charles Lord UTMA VA
 
SMALL CAP GROWTH FUND
 
Donaldson Lufkin Jenrette           P.O. Box 2052                        68.10%
Securities Corporation Inc.         Jersey City, 07303
 
Charles Schwab & Co. Inc.           101 Montgomery St.                   25.47%
Attn. Mutual Fund Dept.             San Francisco, CA 94104
 
State Bank of the Lakes Trustee     440 West Lake Street                  6.41%
U/W Of Louise Murrie                Antioch, IL 60002
FBO William Slater DTD 6-27-88
Trust Department
 
SMALL CAP VALUE FUND
 
Chase Manhattan Bank Trustee        770 Broadway                         30.87%
Metlife Defined Contribution        10th Floor
Group; Attn: Judith Trepanowski     New York, NY 10003
 
Charles Schwab & Co. Inc.           101 Montgomery St.                   27.37%
Att: Mutual Fund Dept.              San Francisco, CA 94104
A/C 8700012578-8
 
</TABLE>     
<PAGE>
 
<TABLE>    
<CAPTION> 
<S>                                 <C>                            <C>
Charles Schwab & Co. Inc.           101 Montgomery St.                    13.4%
Att: Mutual Fund Dept.              San Francisco, CA 94104
A/C 87000012576-2
 
STRATEGIC VALUE FUND
 
Loomis Sayles & Co. L.P.            One Financial Center                 100.00%
Attn: Paul Sherba                   Boston, MA 02111
 
WORLDWIDE FUND
 
Loomis Sayles & Co. L.P.            One Financial Center                 100.00%
Attn: Paul Sherba                   Boston, MA 02111
</TABLE>     

     To the extent any of the shareholders listed above beneficially owns more
than 25% of a Fund, it may be deemed to "control" such Fund.


                     INVESTMENT ADVISORY AND OTHER SERVICES
                                        
     Advisory Agreements.  Loomis Sayles serves as investment adviser under a
separate advisory agreement relating to each of the Bond and High Yield Funds,
each dated August 30, 1996, relating to the Growth, Core Value, Small Cap Value,
International Equity, Worldwide, Global Bond, U.S. Government Securities,
Municipal Bond and Short-Term Bond Funds, each dated August 30, 1996, as amended
January 1, 1997, and relating to each of the Small Cap Growth, Mid-Cap Value,
Mid-Cap Growth, Strategic Value, Investment Grade Bond, and Intermediate
Maturity Bond Funds, each dated December 1, 1996.  The advisory agreements
relating to each of the Growth, Core Value, Small Cap Value, International
Equity, Worldwide, Global Bond, U.S. Government Securities, Municipal Bond and
Short-Term Bond Funds were amended effective January 1, 1997 solely for the
purpose of reducing the fees payable thereunder.  Under each advisory agreement,
Loomis Sayles manages the investment and reinvestment of the assets of the
relevant Fund and generally administers its affairs, subject to supervision by
the board of trustees of the Trust.  Loomis Sayles furnishes, at its own
expense, all necessary office space, facilities and equipment, services of
executive and other personnel of the Fund and certain administrative services.
For these services, the advisory agreements provide that each Fund shall pay
Loomis Sayles a monthly investment advisory fee at the following annual
percentage rates of the particular Fund's average daily net assets:
    
<TABLE>
<CAPTION>
 
FUND                                               RATE
- ----                                               ----
<S>                                            <C>
Growth.......................................       .50%
Core Value...................................       .50
Small Cap Value..............................       .75
International Equity.........................       .75
Worldwide....................................       .75
Small Cap Growth.............................       .75
Mid-Cap Value................................       .75
 
</TABLE>     
<PAGE>
 
<TABLE>
<CAPTION> 
<S>                                            <C>
Mid-Cap Growth..............................       .75
Strategic Value.............................       .50
Bond........................................       .60
High Yield..................................       .60
Global Bond.................................       .60
U.S. Government Securities..................       .40
Municipal Bond..............................       .40
Short-Term Bond.............................       .25
Investment Grade Bond.......................       .40
Intermediate Maturity Bond..................       .40
</TABLE>

     During the periods shown below, pursuant to advisory agreements in
effect prior to January 1, 1997 under which fees were payable to Loomis Sayles
at the following annual rates by the indicated Funds (expressed as a percentage
of average daily net assets): Growth, 0.75%; Core Value, 0.75%; International
Equity, 1.00%; Small Cap Value, 1.00%; Bond, 0.60%; Global Bond, 0.75%; U.S.
Government, 0.60%; Municipal Bond, 0.60%; Short Term Bond, 0.50%; Worldwide,
0.75%; High Yield, 0.60%, Loomis Sayles received the following amount of
investment advisory fees from each Fund (before voluntary fee reductions and
expense assumptions) and bore the following amounts of fee reductions and
expense assumptions for each Fund:
<PAGE>
 
<TABLE>    
<CAPTION>
                 FISCAL YEAR ENDED 12/31/94    FISCAL YEAR ENDED 12/31/95  FISCAL YEAR ENDED 12/31/96
                 ----------------------------  --------------------------  --------------------------
                                FEE WAIVERS                   FEE WAIVERS                 FEE WAIVERS
                    ADVISORY    AND EXPENSE    ADVISORY       AND EXPENSE    ADVISORY     AND EXPENSE
FUND                 FEES       ASSUMPTIONS      FEES         ASSUMPTIONS      FEES       ASSUMPTIONS
- ----               ---------    -----------    --------       -----------    --------     -----------
<S>                 <C>          <C>             <C>           <C>             <C>         <C>
Growth               $248,311     $     0      $319,009       $     0      $  318,602      $        0
                                                                                          
Core Value            188,066           0       243,025             0         297,001               0
                                                                                          
Small Cap Value       790,607           0       839,470             0       1,125,160               0
                                                                                          
International         670,041           0       781,765             0         848,205               0
Equity                                                                                    
                                                                                          
Worldwide                 N/A         N/A           N/A           N/A          23,335          84,635
                                                                                                  
Small Cap                 N/A         N/A           N/A           N/A             N/A             N/A
 Growth*                                                                                          
                                                                                                  
Mid-Cap Value*            N/A         N/A           N/A           N/A             N/A             N/A
                                                                                                  
Mid-Cap                   N/A         N/A           N/A           N/A             N/A             N/A
 Growth*                                                                                          
                                                                                                  
Strategic Value*          N/A         N/A           N/A           N/A             N/A             N/A
                                                                                                  
Bond                  511,925           0       917,444             0       2,205,461               0
                                                                                                  
Global Bond           196,543           0       106,447        26,849         119,648          43,855
                                                                                                  
U.S. Government       106,524      39,088       107,644        39,836         130,189          40,922
 Securities                                                                                       
                                                                                                  
Municipal Bond         36,708      83,642        45,872        77,750          48,518         105,784
                                                                                                  
Short-Term Bond        81,344      53,010       124,536         6,383         100,693          34,987
                                                                                                  
High Yield                N/A         N/A           N/A           N/A           2,544          47,964
                                                                                                  
Investment Grade          N/A         N/A           N/A           N/A             N/A             N/A
 Bond*                                                                                            
                                                                                                  
Intermediate              N/A         N/A           N/A           N/A             N/A             N/A
 Maturity Bond*

</TABLE>     

- ---------------------------------------
    
* The Small Cap Growth, Mid-Cap Value, Mid-Cap Growth, Strategic Value, 
Investment Grade Bond and Intermediate Maturity Bond Funds commenced investment
operations on January 2, 1997.      

     The Trust pays the compensation of its trustees who are not directors,
officers or employees of Loomis Sayles or its affiliates (other than registered
investment companies); registration, filing and other fees in connection with
requirements of regulatory authorities; all charges and expenses of its
custodian and transfer agent; the charges and expenses of its
<PAGE>
 
independent accountants; all brokerage commissions and transfer taxes in
connection with portfolio transactions; all taxes and fees payable to
governmental agencies; the cost of any certificates representing shares of the
Funds; the expenses of meetings of the shareholders and trustees of the Trust;
the charges and expenses of the Trust's legal counsel; interest on any
borrowings by the Funds; the cost of services, including services of counsel,
required in connection with the preparation of, and the cost of printing, the
Trust's registration statements and prospectuses, including amendments and
revisions thereto, annual, semiannual and other periodic reports of the Trust,
and notices and proxy solicitation material furnished to shareholders or
regulatory authorities, to the extent that any such materials relate to the
Trust or its shareholders; and the Trust's expenses of bookkeeping, accounting,
auditing and financial reporting, including related clerical expenses.
    
     Under each advisory agreement, if the total ordinary business expenses of a
Fund or the Trust as a whole for any fiscal year exceed the lowest applicable
limitation (based on percentage of average net assets or income) prescribed by
any state in which the shares of the Fund or the Trust are qualified for sale,
Loomis Sayles shall pay such excess. Loomis Sayles will not be required to
reduce its fee or pay such expenses to an extent or under circumstances which
would result in any Fund's inability to qualify as a regulated investment
company under the Code. The term "expenses" is defined in the advisory
agreements or in relevant state regulations and excludes brokerage commissions,
taxes, interest, distribution-related expenses and extraordinary expenses.      

     As described in the Prospectus, Loomis Sayles has agreed to certain
additional, voluntary arrangements to limit Fund expenses.  These arrangements
may be modified or terminated by Loomis Sayles at any time.

     Each advisory agreement provides that it will continue in effect for two
years from its date of execution and thereafter from year to year if its
continuance is approved at least annually (i) by the Board of Trustees of the
Trust or by vote of a majority of the outstanding voting securities of the
relevant Fund and (ii) by vote of a majority of the Trustees who are not
"interested persons" of the Trust, as that term is defined in the 1940 Act, cast
in person at a meeting called for the purpose of voting on such approval.  Any
amendment to an advisory agreement must be approved by vote of a majority of the
outstanding voting securities of the relevant Fund and by vote of a majority of
the Trustees who are not such interested persons, cast in person at a meeting
called for the purpose of voting on such approval.  Each agreement may be
terminated without penalty by vote of the Board of Trustees or by vote of a
majority of the outstanding voting securities of the relevant Fund, upon sixty
days' written notice, or by Loomis Sayles upon ninety days' written notice, and
each terminates automatically in the event of its assignment.  In addition, each
agreement will automatically terminate if the Trust or the Fund shall at any
time be required by Loomis Sayles to eliminate all reference to the words
"Loomis" and "Sayles" in the name of the Trust or the Fund, unless the
continuance of the agreement after such change of name is approved by a majority
of the outstanding voting securities of the relevant Fund and by a majority of
the Trustees who are not interested persons of the Trust or Loomis Sayles.
<PAGE>
 
     Each advisory agreement provides that Loomis Sayles shall not be subject to
any liability in connection with the performance of its services thereunder in
the absence of willful misfeasance, bad faith, gross negligence or reckless
disregard of its obligations and duties.

      Loomis Sayles acts as investment adviser or subadviser to New England
Value Fund, New England Capital Growth Fund, New England Strategic Income Fund,
New England Star Advisers Fund; New England Star Small Cap Fund and New England
Balanced Fund, which are series of New England Funds Trust I, a registered open-
end management investment company, New England High Income Fund, a series of New
England Fund Trust II, a registered, open-end management investment company, New
England Equity Income Fund, a series of New England Funds Trust III, a
registered open-end management investment company, and to the Balanced
Series, the Avanti Growth Series and the Small Cap Series of New England Zenith
Fund, which is also a registered open-end management investment company, as well
as to Loomis Sayles Investment Trust, also a registered open-end management
investment company.  Loomis Sayles also provides investment advice to certain
other open-end management investment companies and numerous other corporate and
fiduciary clients.

     Loomis Sayles' sole general partner is Loomis Sayles & Company, Inc., which
is a wholly-owned subsidiary of New England Investment Companies, L.P. ("NEIC").
NEIC's sole general partner is New England Investment Companies, Inc., which is
a wholly-owned subsidiary of NEIC Holdings, Inc., a wholly-owned subsidiary of
Metropolitan Life Insurance Company.

     Certain officers and trustees of the Trust also serve as officers,
directors and trustees of other investment companies and clients advised by
Loomis Sayles.  The other investment companies and clients sometimes invest in
securities in which the Funds also invest.  If a Fund and such other investment
companies or clients desire to buy or sell the same portfolio securities at the
same time, purchases and sales may be allocated, to the extent practicable, on a
pro rata basis in proportion to the amounts desired to be purchased or sold for
each.  It is recognized that in some cases the practices described in this
paragraph could have a detrimental effect on the price or amount of the
securities which a Fund purchases or sells.  In other cases, however, it is
believed that these practices may benefit the Funds.  It is the opinion of the
trustees that the desirability of retaining Loomis Sayles as adviser for the
Funds outweighs the disadvantages, if any, which might result from these
practices.

     Distribution Agreement and Rule 12b-1 Plans.  Under an agreement with the
Trust (the "Distribution Agreement"), Loomis Sayles Distributors, L.P. serves as
the general distributor of each class of shares of the Funds.  Under this
agreement, Loomis Sayles Distributors, L.P. is not obligated to sell a specific
number of shares. Loomis Sayles Distributors, L.P. bears the cost of making
information about the Funds available through advertising and other means and
the cost of printing and mailing prospectuses to persons other than
shareholders. The Funds pay the cost of registering and qualifying their shares
under state and federal securities laws and the distribution of prospectuses to
existing shareholders.
<PAGE>
 
     As described in the Prospectuses, the Funds (other than the U.S. Government
Securities and Municipal Bond Funds) have adopted Rule 12b-1 plans (the "Plans")
for their Retail Class shares which, among other things, permit them to pay the
Fund's distributor (currently Loomis Sayles Distributors, L.P.) monthly fees, at
annual rates not exceeding 0.25% of the assets of the Retail Class.  Pursuant to
Rule 12b-1 under the 1940 Act, each Plan (together with the Distribution
Agreement) was approved by the board of trustees, including a majority of the
trustees who are not interested persons of the Trust (as defined in the 1940
Act) and who have no direct or indirect financial interest in the operations of
the Plan or the Distribution Agreement (the "Independent Trustees").

     Each Plan may be terminated by vote of a majority of the Independent
Trustees, or by vote of a majority of the outstanding voting securities of the
Retail Class shares of the Fund to which the Plan relates.  Each Plan may be
amended by vote of the trustees, including a majority of the Independent
Trustees, cast in person at a meeting called for the purpose.  Any change in any
Plan that would materially increase the fees payable thereunder by the Retail
Class shares of the Fund requires approval of the Retail Class shareholders of
that Fund.  The Trust's trustees review quarterly written reports of such costs
and the purposes for which such costs have been incurred. Each Plan provides
that, for so long as that Plan is in effect, selection and nomination of those
trustees who are not interested persons of the Trust shall be committed to the
discretion of such disinterested persons.

     The Distribution Agreement may be terminated at any time with respect to a
Fund on 60 days' written notice without payment of any penalty by the Trust or
by vote of a majority of the outstanding voting securities of that Fund or by
vote of a majority of the Independent Trustees.

     The Distribution Agreement and the Plans will continue in effect for
successive one-year periods, provided that each such continuance is specifically
approved (i) by the vote of a majority of the entire board of trustees and (ii)
by the vote of a majority of the Independent Trustees, in each case cast in
person at a meeting called for that purpose.

     Custodial Arrangements.  State Street Bank and Trust Company ("State Street
Bank"), Boston, Massachusetts 02102, is the Trust's custodian.  As such, State
Street Bank holds in safekeeping certificated securities and cash belonging to
the Funds and, in such capacity, is the registered owner of securities held in
book entry form belonging to the Funds.  Upon instruction, State Street Bank
receives and delivers cash and securities of the Funds in connection with Fund
transactions and collects all dividends and other distributions made with
respect to Fund portfolio securities.  State Street Bank also maintains certain
accounts and records of the Funds and calculates the total net asset value,
total net income and net asset value per share of each Fund on a daily basis.

     Independent Accountants.  The Fund's independent accountants are Coopers &
Lybrand L.L.P., One Post Office Square, Boston, Massachusetts.  Coopers &
Lybrand conducts an annual audit of the Trust's financial statements, assists in
the preparation of the Funds' federal and state income tax returns and consults
with the Funds as to matters of accounting and federal and state
income taxation.  The information under the caption "Financial Highlights"
included in the
<PAGE>
 
Prospectus has been so included, and the financial statements incorporated by
reference herein from the Fund's 1995 Annual Report have been so incorporated,
in reliance on the reports of Coopers & Lybrand, independent accountants, given
on the authority of said firm as experts in auditing and accounting.

                     PORTFOLIO TRANSACTIONS AND BROKERAGE

    
     In placing orders for the purchase and sale of portfolio securities for
each Fund, Loomis Sayles always seeks the best price and execution.
Transactions in unlisted securities are carried out through broker-dealers who
make the primary market for such securities unless, in the judgment of Loomis
Sayles, a more favorable price can be obtained by carrying out such transactions
through other brokers or dealers.      

    
     Loomis Sayles selects only brokers or dealers which it believes are
financially responsible, will provide efficient and effective services in
executing, clearing and settling an order and will charge commission rates
which, when combined with the quality of the foregoing services, will produce
best price and execution for the transaction.  This does not necessarily mean
that the lowest available brokerage commission will be paid.  However, the
commissions are believed to be competitive with generally prevailing rates.
Loomis Sayles will use its best efforts to obtain information as to the general
level of commission rates being charged by the brokerage community from time to
time and will evaluate the overall reasonableness of brokerage commissions paid
on transactions by reference to such data.  In making such evaluation, all
factors affecting liquidity and execution of the order, as well as the amount of
the capital commitment by the broker in connection with the order, are taken
into account.  The Funds, other than the International Equity and Worldwide
Funds, will not pay a broker a commission at a higher rate than otherwise
available for the same transaction in recognition of the value of research
services provided by the broker or in recognition of the value of any other
services provided by the broker which do not contribute to the best price and
execution of the transaction.      
    
     Receipt of research services from brokers may sometimes be a factor in
selecting a broker which Loomis Sayles believes will provide best price and
execution for a transaction.  These research services include not only a wide
variety of reports on such matters as economic and political developments,
industries, companies, securities, portfolio strategy, account performance,
daily prices of securities, stock and bond market conditions and projections,
asset allocation and portfolio structure, but also meetings with management
representatives of issuers and with other analysts and specialists.  Although it
is not possible to assign an exact dollar value to these services, they may, to
the extent used, tend to reduce Loomis Sayles' expenses.  Such services may be
used by Loomis Sayles in servicing other client accounts and in some cases may
not be used with respect to the Funds.  Receipt of services or products other
than research from brokers is not a factor in the selection of  brokers.
Consistent with the Conduct Rules of the National Association of Securities
Dealers, Inc., and subject to seeking best price and execution, Loomis Sayles
may, however, consider purchases of shares of the Trust by customers of broker-
dealers as a factor in the selection of broker-dealers to execute the Trust's
securities transactions.      
<PAGE>
 
     International Equity and Worldwide Funds.  In placing orders for the
purchase and sale of securities for the International Equity and Worldwide
Funds, Loomis Sayles follows the same policies as for the other Funds, except
that Loomis Sayles may cause the International Equity and Worldwide Funds to pay
a broker-dealer that provides brokerage and research services to Loomis Sayles
an amount of commission for effecting a securities transaction for those Funds
in excess of the amount another broker-dealer would have charged for effecting
that transaction.  Loomis Sayles must determine in good faith that such greater
commission is reasonable in relation to the value of the brokerage and research
services provided by the executing broker-dealer viewed in terms of that
particular transaction or Loomis Sayles' overall responsibilities to the Trust
and its other clients.  Loomis Sayles's authority to cause the International
Equity and Worldwide Funds to pay such greater commissions is also subject to
such policies as the Trustees of the Trust may adopt from time to time.
    
     The following three tables set forth, for the fiscal years ended December
31, 1994, December 31, 1995 and December 31, 1996, respectively, (1) the
aggregate dollar amount of brokerage commissions paid on portfolio transactions
during such period, (2) the dollar amount of transactions on which brokerage
commissions were paid during such period that were directed to brokers providing
research services ("directed transactions") and (3) the dollar amount of
commissions paid on directed transactions during such period.  Funds not listed
in a table did not pay brokerage commissions during the relevant period.      

         
                              FISCAL YEAR ENDED DECEMBER 31, 1994
<TABLE>
<CAPTION>
 
                           (1)                          (3)
                           AGGREGATE      (2)           COMMISSIONS
                           BROKERAGE      DIRECTED      ON DIRECTED
       FUND                COMMISSIONS   TRANSACTIONS   TRANSACTIONS
- -------------------------  -----------   ------------   ------------
<S>                        <C>           <C>            <C>
Growth...................     $ 44,867   $ 35,606,334       $ 44,867
Core Value...............     $ 50,131   $ 28,909,781       $ 50,131
Small Cap Value..........     $179,677   $130,509,692       $179,677
International Equity.....     $712,614   $158,862,963       $712,614
 
</TABLE>
                           FISCAL YEAR ENDED DECEMBER 31, 1995
<TABLE>
<CAPTION>
 
                           (1)                          (3)
                           AGGREGATE     (2)            COMMISSIONS
                           BROKERAGE      DIRECTED      ON DIRECTED
       FUND                COMMISSIONS   TRANSACTIONS   TRANSACTIONS
- -------------------------  -----------   ------------   ------------
<S>                        <C>           <C>            <C>
Growth...................     $ 49,657   $ 43,318,381       $ 49,657
Core Value...............     $ 55,978   $ 13,062,283       $ 20,980
Small Cap Value..........     $584,643   $  8,919,867       $ 21,655
International Equity.....     $824,038   $198,137,121       $824,038
</TABLE>

<PAGE>
 
                          FISCAL YEAR ENDED DECEMBER 31, 1996
<TABLE>    
<CAPTION>
 
                        (1)                         (3)
                        AGGREGATE     (2)           COMMISSIONS
                        BROKERAGE     DIRECTED      ON DIRECTED
 FUND                   COMMISSIONS   TRANSACTIONS  TRANSACTIONS
- ----------------------  -----------   ------------  ------------
<S>                     <C>           <C>           <C>
Growth................  $ 81,708      $97,799,290   $ 81,708
Core Value............  $ 64,033      $17,907,024   $ 28,782
Small Cap Value.......  $248,992      $15,896,278   $ 45,316
International Equity..  $             $             $
Worldwide.............  $             $             $
 
</TABLE>     

                           DESCRIPTION OF THE TRUST

     The Trust, registered with the SEC as a diversified open-end
management investment company, is organized as a Massachusetts business trust
under the laws of Massachusetts by an Agreement and Declaration of Trust (the
"Declaration of Trust") dated February 20, 1991.

     The Declaration of Trust currently permits the trustees to issue an
unlimited number of full and fractional shares of each series.  Each share of
each Fund represents an equal proportionate interest in such Fund with each
other share of that Fund and is entitled to a proportionate interest in the
dividends and distributions from that Fund.  The shares of each Fund do not have
any preemptive rights.  Upon termination of any Fund, whether pursuant to
liquidation of the Trust or otherwise, shareholders of that Fund are entitled to
share pro rata in the net assets of that Fund available for distribution to
shareholders.  The Declaration of Trust also permits the trustees to charge
shareholders directly for custodial, transfer agency and servicing expenses.

     The assets received by each Fund for the issue or sale of its shares
and all income, earnings, profits, losses and proceeds therefrom, subject only
to the rights of creditors, are allocated to, and constitute the underlying
assets of, that Fund.  The underlying assets are segregated and are charged with
the expenses with respect to that Fund and with a share of the general expenses
of the Trust.  Any general expenses of the Trust that are not readily
identifiable as belonging to a particular Fund are allocated by or under the
direction of the trustees in such manner as the trustees determine to be fair
and equitable.  While the expenses of the Trust are allocated to the separate
books of account of each Fund, certain expenses may be legally chargeable
against the assets of all Funds.

     The Declaration of Trust also permits the trustees, without
shareholder approval, to subdivide any series of shares or Fund into various
classes of shares with such dividend preferences and other rights as the
trustees may designate.  Shares of each Fund (other than the U.S. Government
Securities and Municipal Bond Funds) are currently divided into two classes,
designated Retail Class and Institutional Class.  The trustees may also, without
shareholder approval, establish one or more additional separate portfolios for
investments in the Trust or merge two or more existing portfolios.
Shareholders' investments in such an additional or
<PAGE>
 
merged portfolio would be evidenced by a separate series of shares (i.e., a new
"Fund").

     The Declaration of Trust provides for the perpetual existence of the
Trust.  The Trust or any Fund, however, may be terminated at any time by vote of
at least two-thirds of the outstanding shares of each Fund affected.  The
Declaration of Trust further provides that the trustees may also terminate the
Trust or any Fund upon written notice to the shareholders.  As a matter of
policy, however, the trustees will not terminate the Trust or any Fund without
submitting the matter to a vote of the shareholders of the Trust or the relevant
Fund.

VOTING RIGHTS

     As summarized in the Prospectus, shareholders are entitled to one vote
for each full share held (with fractional votes for each fractional share held)
and may vote (to the extent provided in the Declaration of Trust) on the
election of trustees and the termination of the Trust and on other matters
submitted to the vote of shareholders.

     The Declaration of Trust provides that on any matter submitted to a
vote of all Trust shareholders, all Trust shares entitled to vote shall be voted
together irrespective of series or sub-series unless the rights of a particular
series or sub-series would be adversely affected by the vote, in which case a
separate vote of that series or sub-series shall also be required to decide the
question.  Also, a separate vote shall be held whenever required by the 1940 Act
or any rule thereunder.  Rule 18f-2 under the 1940 Act provides in effect that a
class shall be deemed to be affected by a matter unless it is clear that the
interests of each class in the matter are substantially identical or that the
matter does not affect any interest of such class. On matters affecting an
individual series, only shareholders of that series are entitled to vote.
Consistent with the current position of the SEC, shareholders of all series vote
together, irrespective of series, on the election of trustees and the selection
of the Trust's independent accountants, but shareholders of each series vote
separately on other matters requiring shareholder approval, such as certain
changes in investment policies of that series or the approval of the investment
advisory agreement relating to that series.

     There will normally be no meetings of shareholders for the purpose of
electing trustees except that, in accordance with the 1940 Act, (i) the Trust
will hold a shareholders' meeting for the election of trustees at such time as
less than a majority of the trustees holding office have been elected by
shareholders, and (ii) if, as a result of a vacancy on the board of trustees,
less than two-thirds of the trustees holding office have been elected by the
shareholders, that vacancy may be filled only by a vote of the shareholders.  In
addition, trustees may be removed from office by a written consent signed by the
holders of two-thirds of the outstanding shares and filed with the Trust's
custodian or by a vote of the holders of two-thirds of the outstanding shares at
a meeting duly called for that purpose, which meeting shall be held upon the
written request of the holders of not less than 10% of the outstanding shares.

     Upon written request by the holders of shares having a net asset value
constituting 1% of the outstanding shares stating that such shareholders wish to
communicate with the other shareholders for the purpose of obtaining the
signatures necessary to demand a meeting to
<PAGE>
 
consider removal of a trustee, the Trust has undertaken to provide a list of
shareholders or to disseminate appropriate materials (at the expense of the
requesting shareholders).

     Except as set forth above, the trustees shall continue to hold office
and may appoint successor trustees.  Voting rights are not cumulative.

     No amendment may be made to the Declaration of Trust without the
affirmative vote of a majority of the outstanding shares of the Trust, except
(i) to change the Trust's name or to cure technical problems in the Declaration
of Trust and (ii) to establish, change or eliminate the par value of any shares
(currently all shares have no par value).

SHAREHOLDER AND TRUSTEE LIABILITY

     Under Massachusetts law shareholders could, under certain
circumstances, be held personally liable for the obligations of the Fund of
which they are shareholders.  However, the Declaration of Trust disclaims
shareholder liability for acts or obligations of each Fund and requires that
notice of such disclaimer be given in each agreement, obligation or instrument
entered into or executed by the Trust or the trustees.  The Declaration of Trust
provides for indemnification out of Fund property for all loss and expense of
any shareholder held personally liable for the obligations of the Fund.  Thus,
the risk of a shareholder incurring financial loss on account of shareholder
liability is considered remote since it is limited to circumstances in which the
disclaimer is inoperative and the Fund itself would be unable to meet its
obligations.

     The Declaration of Trust further provides that the trustees will not
be liable for errors of judgment or mistakes of fact or law.  However, nothing
in the Declaration of Trust protects a trustee against any liability to which
the trustee would otherwise be subject by reason of willful misfeasance, bad
faith, gross negligence or reckless disregard of the duties involved in the
conduct of his office.  The By-Laws of the Trust provide for indemnification by
the Trust of the trustees and officers of the Trust except with respect to any
matter as to which any such person did not act in good faith in the reasonable
belief that such action was in or not opposed to the best interests of the
Trust.  No officer or trustee may be indemnified against any liability to the
Trust or the Trust's shareholders to which such person would otherwise be
subject by reason of willful misfeasance, bad faith, gross negligence or
reckless disregard of the duties involved in the conduct of his or her office.

HOW TO BUY SHARES

     The procedures for purchasing shares of each Fund are summarized in
the Prospectus under "How to Purchase Shares."

NET ASSET VALUE

     The net asset value of the shares of each Fund is determined by
dividing that Fund's total net assets (the excess of its assets over its
liabilities) by the total number of shares of the Fund outstanding and rounding
to the nearest cent.  Such determination is made as of the close of
<PAGE>
 
regular trading on the New York Stock Exchange on each day on which that
Exchange is open for unrestricted trading, and no less frequently than once
daily on each day during which there is sufficient trading in a Fund's portfolio
securities that the value of that Fund's shares might be materially affected.
During the 12 months following the date of this Statement of Additional
Information, the New York Stock Exchange is expected to be closed on the
following weekdays: New Year's Day, Presidents' Day, Good Friday, Memorial Day,
Independence Day, Labor Day, Thanksgiving Day and Christmas Day.  Equity
securities listed on an established securities exchange or on the Nasdaq
National Market System are normally valued at their last sale price on the
exchange where primarily traded or, if there is no reported sale during the day,
and in the case of over-the-counter securities not so listed, at the last bid
price.  Long-term debt securities are valued by a pricing service, which
determines valuations of normal institutional-size trading units of long-term
debt securities.  Such valuations are determined using methods based on market
transactions for comparable securities and on various relationships between
securities which are generally recognized by institutional traders.  Other
securities for which current market quotations are not readily available
(including restricted securities, if any) and all other assets are taken at fair
value as determined in good faith by the board of trustees, although the actual
calculations may be made by persons acting pursuant to the direction of the
board.

     Generally, trading in foreign securities markets is substantially
completed each day at various times prior to the close of regular trading on the
New York Stock Exchange. Occasionally, events affecting the value of foreign
fixed income securities and of equity securities of non-U.S.  issuers not traded
on a U.S. exchange may occur between the completion of substantial trading of
such securities for the day and the close of regular trading on the New York
Stock Exchange, which events will not be reflected in the computation of the
Fund's net asset value.  If events materially affecting the value of any Fund's
portfolio securities occur during such period, then these securities will be
valued at their fair value as determined in good faith by or in accordance with
procedures approved by the trustees.

                              SHAREHOLDER SERVICES

OPEN ACCOUNTS

     A shareholder's investment in any Fund is automatically credited to an
open account maintained for the shareholder by Boston Financial Data Services,
Inc. ("BFDS"), the shareholder servicing agent for State Street Bank.
Certificates representing shares are issued only upon written request to BFDS
but are not issued for fractional shares.  Following each transaction in the
account, a shareholder will receive an account statement disclosing the current
balance of shares owned and the details of recent transactions in the account.
After the close of each fiscal year State Street Bank will send each shareholder
a statement providing federal tax information on dividends and distributions
paid to the shareholder during the year.  This should be retained as a permanent
record.  Shareholders will be charged a fee for duplicate information.

     The open account system permits the purchase of full and fractional
shares and, by making the issuance and delivery of certificates representing
shares unnecessary, eliminates the problems of handling and safekeeping
certificates, and the cost and inconvenience of replacing lost, stolen,
mutilated or destroyed certificates.
<PAGE>
 
     The costs of maintaining the open account system are borne by the
Trust, and no direct charges are made to shareholders.  Although the Trust has
no present intention of making such direct charges to shareholders, it reserves
the right to do so.  Shareholders will receive prior notice before any such
charges are made.

SYSTEMATIC WITHDRAWAL PLAN

     A Systematic Withdrawal Plan, referred to in the Prospectus under
"Shareholder Services--Systematic Withdrawal Plan," provides for monthly,
quarterly, semiannual or annual withdrawal payments of $50 or more from the
account of an eligible shareholder, as provided therein, provided that the
account has a value of at least $10,000 at the time the plan is established.

     Payments will be made either to the shareholder or to any other person
designated by the shareholder.  If payments are issued to an individual other
than the registered owner(s), a signature guarantee will be required on the Plan
application.  All shares in an account that is subject to a Systematic
Withdrawal Plan must be held in an open account rather than in certificated
form.  Income dividends and capital gain distributions will be reinvested at the
net asset value determined as of the close of regular trading on the New York
Stock Exchange on the record date for the dividend or distribution.

     Since withdrawal payments represent proceeds from liquidation of
shares, the shareholder should recognize that withdrawals may reduce and
possibly exhaust the value of the account, particularly in the event of a
decline in net asset value.  Accordingly, the shareholder should consider
whether a Systematic Withdrawal Plan and the specified amounts to be withdrawn
are appropriate in the circumstances.  The Fund makes no recommendations or
representations in this regard. It may be appropriate for the shareholder to
consult a tax adviser before establishing such a plan. See "Redemptions" and
"Income Dividends, Capital Gain Distributions and Tax Status" below for certain
information as to federal income taxes.

EXCHANGE PRIVILEGE

     Shareholders may redeem their shares of any Fund and have the proceeds
applied on the same day to purchase shares of any other Fund or of New England
Cash Management Trust or New England Tax Exempt Money Market Trust.  Exchange of
shares of the High Yield Fund purchased within one year of such exchanges will
be subject to a redemption fee of 2.00% of the amount exchanged.  For purposes
of determining whether a redemption fee is payable with respect to shares of the
High Yield Fund purchased by exchange of shares of another fund, the one-year
period shall be deemed to begin on the date of such purchase by exchange.  This
option is summarized in the Prospectus under "Shareholder Services--Free
Exchange Privilege."

     Exchanges may be effected by (1) making a telephone request by calling
800-633-3330, provided that a special authorization form is on file with BFDS,
or (2) sending a written
<PAGE>
 
exchange request to BFDS accompanied by an account application for the
appropriate fund.  The Trust reserves the right to modify this exchange
privilege without prior notice.   An exchange constitutes a sale of the shares
for federal income tax purposes on which the investor may realize a capital gain
or loss.

IRAS

     Under "Shareholder Services--Retirement Plans," the Prospectus refers
to IRAs established under a prototype plan made available by Loomis Sayles.
These plans may be funded with shares of any Fund, although it is expected that
shares of the Municipal Bond Fund would ordinarily not be an appropriate
investment for these plans.

     All income dividends and capital gain distributions of plan
participants must be reinvested.  Plan documents and further information can be
obtained from Loomis Sayles.

     Check with your financial or tax adviser as to the suitability of Fund
shares for your retirement plan.

REDEMPTIONS

     The procedures for redemption of Fund shares are summarized in the
Prospectus under "How to Redeem Shares."

     Except as noted below, signatures on redemption requests must be
guaranteed by commercial banks, trust companies, savings associations, credit
unions or brokerage firms that are members of domestic securities exchanges.
Signature guarantees by notaries public are not acceptable.  However, as noted
in the Prospectus, a signature guarantee will not be required if the proceeds of
the redemption do not exceed $50,000 and the proceeds check is made payable to
the registered owner(s) and mailed to the record address.

     If a shareholder selects the telephone redemption service in the
manner described in the next paragraph, Fund shares may be redeemed by making a
telephone call directly to BFDS at 800-626-9390.  When a telephonic redemption
request is received, the proceeds are wired to the bank account previously
chosen by the shareholder and a nominal wire fee (currently $5.00) is
deducted.  Telephonic redemption requests must be received by BFDS prior to the
close of regular trading on the New York Stock Exchange on a day when the
Exchange is open for business.  Requests made after that time or on a day when
the New York Stock Exchange is not open for business cannot be accepted by BFDS
and a new request will be necessary.

     In order to redeem shares by telephone, a shareholder must either
select this service when completing the Fund application or must do so
subsequently on the Service Options Form available from BFDS.  When selecting
the service, a shareholder must designate a bank account to which the redemption
proceeds should be wired.  Any change in the bank account so designated must be
made by furnishing to BFDS a completed Service Options Form with a signature
guarantee.  Whenever the Service Options Form is used, the shareholder's
signature
<PAGE>
 
must be guaranteed as described above.  Telephone redemptions may only be made
if an investor's bank is a member of the Federal Reserve System or has a
correspondent bank that is a member of the System.  If the account is with a
savings bank, it must have only one correspondent bank that is a member of the
System.  The Trust, BFDS, Loomis Sayles Distributors, L.P. and State Street Bank
are not responsible for the authenticity of withdrawal instructions received by
telephone.

     The redemption price will be the net asset value per share next
determined after the redemption request and any necessary special documentation
are received by BFDS in proper form, less, in the case of the High Yield Fund, a
redemption fee of 2.00% of the amount redeemed with respect to shares of that
Fund redeemed within one (1) year of purchase, if applicable.  To the extent
that shares are redeemed at a time when other shares of the Fund are being
purchased, Loomis Sayles will treat the redemption (up to the amount being
concurrently purchased) as involving minimal brokerage and transaction costs and
will charge a redemption fee only with respect to the excess, if any, of the
amount of the redemption over the amount of the concurrent purchase.  If there
is more than one redemption at the time of a concurrent purchase, each of the
redeeming shareholders will share, pro rata, in the reduction in redemption fee
caused by the concurrent purchase.  Proceeds resulting from a written redemption
request will normally be mailed to the shareholder within seven days after
receipt of a request in good order. Telephonic redemption proceeds will normally
be wired on the first business day following receipt of a proper redemption
request.  In those cases where a shareholder has recently purchased shares by
check and the check was received less than fifteen days prior to the redemption
request, the Fund may withhold redemption proceeds until the check has cleared.

     Each Fund will normally redeem shares for cash; however, each Fund
reserves the right to pay the redemption price wholly or partly in kind if the
board of trustees of the Trust determines it to be advisable in the interest of
the remaining shareholders.  If portfolio securities are distributed in lieu of
cash, the shareholder will normally incur brokerage commissions upon subsequent
disposition of any such securities.  However, the Trust has elected to be
governed by Rule 18f-1 under the 1940 Act pursuant to which the Trust is
obligated to redeem shares solely in cash for any shareholder during any 90-day
period up to the lesser of $250,000 or 1% of the total net asset value of the
Trust at the beginning of such period.

     A redemption constitutes a sale of the shares for federal income tax
purposes on which the investor may realize a long- or short-term capital gain or
loss.  See "Income Dividends, Capital Gain Distributions and Tax Status."

          INCOME DIVIDENDS, CAPITAL GAIN DISTRIBUTIONS AND TAX STATUS
                                        
     As described in the Prospectus under "Dividends, Capital Gain
Distributions and Taxes" it is the policy of each Fund to pay its shareholders,
as dividends, substantially all net investment income and to distribute annually
all net realized capital gains, if any, after offsetting any capital loss
carryovers.
<PAGE>
 
      Income dividends and capital gain distributions are payable in full
and fractional shares of the particular Fund based upon the net asset value
determined as of the close of regular trading on the New York Stock Exchange on
the record date for each dividend or distribution. Shareholders, however, may
elect to receive their income dividends or capital gain distributions, or both,
in cash. The election may be made at any time by submitting a written request
directly to BFDS. In order for a change to be in effect for any dividend or
distribution, it must be received by BFDS on or before the record date for such
dividend or distribution.

     As required by federal law, detailed federal tax information will be
furnished to each shareholder for each calendar year on or before January 31 of
the succeeding year.

     Each Fund intends to qualify each year as a regulated investment
company under Subchapter M of the Code.  In order so to qualify, the Fund must,
among other things, (i) derive at least 90% of its gross income from dividends,
interest, payments with respect to certain securities loans, gains from the sale
of securities or foreign currencies, or other income (including but not limited
to gains from options, futures or forward contracts) derived with respect to its
business of investing in such stock, securities or currencies; (ii) derive less
than 30% of its gross income from gains from the sale or other disposition of
securities held for less than three months; (iii) distribute at least 90% of its
dividend, interest and certain other taxable income each year; and (iv) at the
end of each fiscal quarter maintain at least 50% of the value of its total
assets in cash, government securities, securities of other regulated investment
companies, and other securities of issuers which represent, with respect to each
issuer, no more than 5% of the value of the Fund's total assets and 10% of the
outstanding voting securities of such issuer, and with no more than 25% of its
assets invested in the securities (other than those of the U.S. government or
other regulated investment companies) of any one issuer or of two or more
issuers which the Fund controls and which are engaged in the same, similar or
related trades and businesses.  To the extent it qualifies for treatment as a
regulated investment company, the Fund will not be subject to federal income tax
on income paid to its shareholders in the form of dividends or capital gain
distributions.

     An excise tax at the rate of 4% will be imposed on the excess, if any,
of each Fund's "required distribution" over its actual distributions in any
calendar year.  Generally, the "required distribution" is 98% of the Fund's
ordinary income for the calendar year plus 98% of its capital gain net income
recognized during the one-year period ending on October 31 (or December 31, if
the Fund so elects) plus undistributed amounts from prior years.  Each Fund
intends to make distributions sufficient to avoid imposition of the excise tax.
Distributions declared by a Fund during October, November or December to
shareholders of record on a date in any such month and paid by the Fund during
the following January will be treated for federal tax purposes as paid by the
Fund and received by shareholders on December 31 of the year in which declared.

     Shareholders of each Fund will be subject to federal income taxes on
distributions made by the Fund (other than "exempt-interest dividends" paid by
the Municipal Bond Fund, as described in the Prospectus) whether received in
cash or additional shares of the Fund. Distributions by each Fund of net income
and short-term capital gains, if any, will be taxable to shareholders as
ordinary income.  Distributions of long-term capital gains, if any, will be
taxable to shareholders as long-term capital gains, without regard to how long a
shareholder has held 
<PAGE>
 
shares of the Fund. A loss on the sale of shares held for 12 months or less will
be treated as a long-term capital loss to the extent of any long-term capital
gain dividend paid to the shareholder with respect to such shares.

     Dividends and distributions on Fund shares received shortly after
their purchase, although in effect a return of capital, are subject to federal
income taxes.

     The International Equity, Worldwide and Global Bond Funds each may be
eligible to make an election under Section 853 of the Code so that its
shareholders will be able to claim a credit or deduction on their income tax
returns for, and will be required to treat as part of the amounts distributed to
them, their pro rata portion of qualified taxes paid by the relevant Fund to
foreign countries.  The ability of shareholders of the Fund to claim a foreign
tax credit is subject to certain limitations imposed by Section 904 of the Code,
which in general limit the amount of foreign tax that may be used to reduce a
shareholder's U.S. tax liability to that amount of U.S. tax which would be
imposed on the amount and type of income in respect of which the foreign tax was
paid.  A shareholder who for U.S. income tax purposes claims a foreign tax
credit in respect of Fund distributions may not claim a deduction for foreign
taxes paid by the Fund, regardless of whether the shareholder itemizes
deductions.  Also, under Section 63 of the Code, no deduction for foreign taxes
may be claimed by shareholders who do not itemize deductions on their federal
income tax returns.  It should also be noted that a tax-exempt shareholder, like
other shareholders, will be required to treat as part of the amounts distributed
to it a pro rata portion of the income taxes paid by the Fund to foreign
countries.  However, that income will generally be exempt from United States
taxation by virtue of such shareholder's tax-exempt status and such a
shareholder will not be entitled to either a tax credit or a deduction with
respect to such income. The International Equity, Worldwide and Global Bond
Funds will notify shareholders each year of the amount of dividends and
distributions and the shareholder's pro rata share of qualified taxes paid by
each such Fund to foreign countries.

     Each Fund's transactions, if any, in foreign currencies are likely to
result in a difference between the Fund's book income and taxable income.  This
difference may cause a portion of the Fund's income distributions to constitute
a return of capital for tax purposes or require the Fund to make distributions
exceeding book income to avoid excise tax liability and to qualify as a
regulated investment company.

     Each Fund may limit its investments in certain "passive foreign
investment companies" in order to avoid certain taxes that arise as a result of
such investments.

     Redemptions and exchanges of each Fund's shares are taxable events
and, accordingly, shareholders may realize gains and losses on these
transactions.  If shares have been held for more than one year, gain or loss
realized will be long-term capital gain or loss, provided the shareholder holds
the shares as a capital asset.  However, if a shareholder sells Fund shares at a
loss within six months after purchasing the shares, the loss will be treated as
a long-term capital loss to the extent of any long-term capital gain
distributions received by the shareholder. Furthermore, no loss will be allowed
on the sale of Fund shares to the extent the shareholder acquired other shares
of the same Fund within 30 days prior to the sale of the loss shares or 30
days after such sale.
<PAGE>
 
     The foregoing is a general and abbreviated summary of the applicable
provisions of the Code and regulations currently in effect.  For the complete
provisions, reference should be made to the pertinent Code sections and
regulations.  The Code and regulations are subject to change by legislative or
administrative action.

     Dividends and distributions also may be subject to state and local
taxes.  Shareholders are urged to consult their tax advisers regarding specific
questions as to federal, state or local taxes.

     The foregoing discussion relates solely to U.S. federal income tax
law.  Non-U.S. investors should consult their tax advisers concerning the tax
consequences of ownership of shares of the Fund, including the possibility that
distributions may be subject to a 30% United States withholding tax (or a
reduced rate of withholding provided by treaty).

                              FINANCIAL STATEMENTS
         
     The financial statements of each Fund included in the Trust's 1996
Annual Report, filed with the Securities and Exchange Commission on March 
7, 1997, are incorporated by reference to such Report.      

                     CALCULATION OF YIELD AND TOTAL RETURN

     Yield.  Yield with respect to a Fund will be computed by dividing such
Fund's net investment income for a recent 30-day period by the maximum offering
price (reduced by any undeclared earned income expected to be paid shortly as a
dividend) on the last trading day of that period. Net investment income will
reflect amortization of any market value premium or discount of fixed income
securities (except for obligations backed by mortgages or other assets) and may
include recognition of a pro rata portion of the stated dividend rate of
dividend paying portfolio securities.  The Funds' yields will vary from time to
time depending upon market conditions, the composition of the Funds' portfolios
and operating expenses of the Trust allocated to each Fund. These factors, and
possible differences in the methods used in calculating yield, should be
considered when comparing a Fund's yield to yields published for other
investment companies and other investment vehicles.  Yield should also be
considered relative to changes in the value of the Funds' shares and to the
relative risks associated with the investment objectives and policies of the
Funds.

     At any time in the future, yields may be higher or lower than past
yields and there can be no assurance that any historical results will continue.

     Investors in the Funds are specifically advised that the net asset
value per share of each Fund may vary, just as yields for each Fund may vary.
An investor's focus on yield to the exclusion of the consideration of the value
of shares of that Fund may result in the investor's misunderstanding the total
return he or she may derive from that Fund.
<PAGE>
 
     Total Return.  Total Return with respect to a Fund is a measure of the
change in value of an investment in such Fund over the period covered, and
assumes any dividends or capital gains distributions are reinvested immediately,
rather than paid to the investor in cash. The formula for total return used
herein includes four steps: (1) adding to the total number of shares purchased
through a hypothetical $1,000 investment in the Fund all additional shares which
would have been purchased if all dividends and distributions paid or distributed
during the period had been immediately reinvested; (2) calculating the value of
the hypothetical initial investment of $1,000 as of the end of the period by
multiplying the total number of shares owned at the end of the period by the net
asset value per share on the last trading day of the period; (3) assuming
redemption at the end of the period; and (4) dividing the resulting account
value by the initial $1,000 investment.

                            PERFORMANCE COMPARISONS
                                        
     Yield and Total Return.  Each Fund may from time to time include its
total return information in advertisements or in information furnished to
present or prospective shareholders. Each of the Bond, Global Bond, U.S.
Government Securities, Municipal Bond, Short-Term Bond, Investment Grade Bond,
Intermediate Maturity Bond, High Yield and Worldwide Funds may from time to time
include the yield and/or total return of its shares in advertisements or
information furnished to present or prospective shareholders.  Each Fund may
from time to time include in advertisements or information furnished to present
or prospective shareholders (i) the ranking of performance figures relative to
such figures for groups of mutual funds categorized by Lipper Analytical
Services, Inc. or Micropal, Inc. as having similar investment objectives, (ii)
the rating assigned to the Fund by Morningstar, Inc. based on the Fund's risk-
adjusted performance relative to other mutual funds in its broad investment
class, and/or (iii) the ranking of performance figures relative to such figures
for mutual funds in its general investment category as determined by
CDA/Weisenberger's Management Results.

     Lipper Analytical Services, Inc. distributes mutual fund rankings
monthly.  The rankings are based on total return performance calculated by
Lipper, generally reflecting changes in net asset value adjusted for
reinvestment of capital gains and income dividends.  They do not reflect
deduction of any sales charges.  Lipper rankings cover a variety of performance
periods, including year-to-date, 1-year, 5-year, and 10-year performance.
Lipper classifies mutual funds by investment objective and asset category.

     Micropal, Inc. distributes mutual fund rankings weekly and monthly.
The rankings are based upon performance calculated by Micropal, generally
reflecting changes in net asset value that can be adjusted for the reinvestment
of capital gains and dividends.  If deemed appropriate by the user, performance
can also reflect deductions for sales charges.  Micropal rankings cover a
variety of performance periods, including year-to-date, 1-year, 5-year and 10-
year performance. Micropal classifies mutual funds by investment objective and
asset category.

     Morningstar, Inc. distributes mutual fund ratings twice a month.  The
ratings are divided into five groups: highest, above average, neutral, below
average and lowest.  They represent a fund's historical risk/reward ratio
relative to other funds in its broad investment class as determined by
Morningstar, Inc. Morningstar ratings cover a variety of performance periods,
<PAGE>
 
including 3-year, 5-year, 10-year and overall performance.  The performance
factor for the overall rating is a weighted-average return performance (if
available) reflecting deduction of expenses and sales charges.  Performance is
adjusted using quantitative techniques to reflect the risk profile of the fund.
The ratings are derived from a purely quantitative system that does not utilize
the subjective criteria customarily employed by rating agencies such as Standard
& Poor's and Moody's Investor Service, Inc.

     CDA/Weisenberger's Management Results publishes mutual fund rankings
and is distributed monthly.  The rankings are based entirely on total return
calculated by Weisenberger for periods such as year-to-date, 1-year, 3-year, 5-
year and 10-year Mutual funds are ranked in general categories (e.g.,
international bond, international equity, municipal bond, and maximum capital
gain).  Weisenberger rankings do not reflect deduction of sales charges or fees.

     Performance information may also be used to compare the performance of
the Fund to certain widely acknowledged standards or indices for stock and bond
market performance, such as those listed below.

     Consumer Price Index.  The Consumer Price Index, published by the U.S.
Bureau of Labor Statistics, is a statistical measure of changes, over time, in
the prices of goods and services in major expenditure groups.

     Dow Jones Industrial Average.  The Dow Jones Industrial Average is a
market value-weighted and unmanaged index of 30 large industrial stocks traded
on the New York Stock Exchange.

     Lehman Brothers Government/Corporate Bond Index.  The Lehman Brothers
Government/ Corporate Bond Index is an index of publicly issued U.S. Treasury
obligations, debt obligations of U.S. government agencies (excluding mortgage-
backed securities), fixed-rate, non-convertible, investment-grade corporate debt
securities and U.S. dollar-denominated, SEC-registered non-convertible debt
issued by foreign governmental entities or international agencies used as a
general measure of the performance of fixed-income securities.

     Lehman Brothers 1-3 Year Government Index.  The Index contains fixed
rate debt issues of the U.S. government or its agencies rated investment grade
or higher with at least one year maturity and an outstanding par value of at
least $100 million for U.S. government issues.

     Lehman Brothers Government Bond Index.  The Lehman Brothers Government
Bond Index is composed of all publicly issued, nonconvertible, domestic debt of
the U.S. government or any of its agencies, quasi-federal corporations, or
corporate debt guaranteed by the U.S. government.

     Lehman Brothers Municipal Bond Index.  The Lehman Brothers Municipal
Bond Index is computed from the prices of approximately 21,000 bonds consisting
of roughly 30% revenue bonds, 30% government obligation bonds, 27% insured bonds
and 13% prerefunded bonds.
<PAGE>
 
     MSCI-EAFE Index.  The MSCI-EAFE Index contains over 1000 stocks from
20 different countries with Japan (approximately 50%), United Kingdom, France
and Germany being the most heavily weighted.

     MSCI-EAFE ex-Japan Index.  The MSCI-EAFE ex-Japan Index consists of
all stocks contained in the MSCI-EAFE Index, other than stocks from Japan.

     Merrill Lynch Government/Corporate Index.  The Merrill Lynch
Government/Corporate Index is a composite of approximately 4,900 U.S. government
and corporate debt issues with at least $25 million outstanding, greater than
one year maturity, and credit ratings of investment grade or higher.

     Merrill Lynch High Yield Index.  The Merrill Lynch High Yield Index
includes over 750 issues and represents public debt greater than $10 million
(original issuance rated BBB/BB and below).

     Russell 2000 Index. The Russell 2000 Index is comprised of the 2000
smallest of the 3000 largest U.S.-domiciled corporations, ranked by market
capitalization.

     Salomon Brothers World Government Bond Index.  The Salomon Brothers
World Government Bond Index includes a broad range of institutionally-traded
fixed-rate government securities issued by the national governments of the nine
countries whose securities are most actively traded.  The index generally
excludes floating- or variable-rate bonds, securities aimed principally at non-
institutional investors (such as U.S. Savings Bonds) and private-placement type
securities.

     Standard & Poor's/Barra Growth Index.  The Standard & Poor's/Barra
Growth Index is constructed by ranking the securities in the S&P 500 by price-
to-book ratio and including the securities with the highest price-to-book ratios
that represent approximately half of the market capitalization of the S&P 500.

     Standard & Poor's/Barra Value Index.  The Standard & Poor's/Barra
Value Index is constructed by ranking the securities in the S&P 500 by price-to-
book ratio and including the securities with the lowest price-to-book ratios
that represent approximately half of the market capitalization of the S&P 500.

     Standard & Poor's 500 Composite Stock Price Index (the "S&P 500").
The S&P 500 is a market value-weighted and unmanaged index showing the changes
in the aggregate market value of 500 stocks relative to the base period 1941-43.
The S&P 500 is composed almost entirely of common stocks of companies listed on
the New York Stock Exchange, although the common stocks of a few companies
listed on the American Stock Exchange or traded over-the-counter are included.
The 500 companies represented include 400 industrial, 60 transportation and 40
financial services concerns.  The S&P 500 represents about 80% of the market
value of all issues traded on the New York Stock Exchange.  The S&P 500 is the
most common index for the overall U.S. stock market.
<PAGE>
 
     From time to time, articles about the Funds regarding performance,
rankings and other characteristics of the Funds may appear in publications
including, but not limited to, the publications included in Appendix A.  In
particular, some or all of these publications may publish their own rankings or
performance reviews of mutual funds, including the Funds. References to or
reprints of such articles may be used in the Funds' promotional literature.
References to articles regarding personnel of Loomis Sayles who have portfolio
management responsibility may also be used in the Funds' promotional literature.
For additional information about the Funds' advertising and promotional
literature, see Appendix B.

                                 PERFORMANCE DATA*

    
     The manner in which total return and yield of the Funds will be
calculated for public use is described above.  The following table summarizes
the calculation of total return and yield for Institutional Class shares of the
Funds, where applicable, (i) for the one-year period ended December 31, 1996,
(ii) for the three-year period ended December 31, 1996, (iii) the five-year
period ended December 31, 1996 and (iv) since the commencement of investment
operations (May, 1991 for all Funds other than the Intermediate Maturity Bond,
Investment Grade Bond, Mid-Cap Growth, Mid-Cap Value, Short-Term Bond, Small Cap
Growth, Strategic Value, and Worldwide Funds, January, 1997 for the Intermediate
Bond, Investment Grade Bond, Mid-Cap Growth, Mid-Cap Value, Small Cap Growth and
Strategic Value Funds, August, 1992 for the Short-Term Bond Fund, and May, 1996
for the Worldwide Fund) through December 31, 1996. None of the Funds had
commenced investment operations with respect to Retail Class Shares, and the
Intermediate Maturity Bond, Investment Grade Bond, Mid-Cap Growth, Mid-Cap
Value, Small Cap Growth, and Strategic Value Funds had not commenced investment
operations with respect to Institutional Class shares as of December 31, 1996.
     

                               PERFORMANCE DATA
<TABLE>    
<CAPTION>
                                                                          AVERAGE       AVERAGE
                            AVERAGE           AVERAGE       AVERAGE       ANNUAL        ANNUAL
                            ANNUAL            ANNUAL        ANNUAL        TOTAL RETURN  TOTAL
                            TOTAL RETURN      TOTAL RETURN  TOTAL RETURN  FROM THE      RETURN
                            FOR THE           FOR THE       FOR THE       MODIFIED      FROM THE
                            CURRENT           ONE-YEAR      THREE-YEAR    FIVE-YEAR     INCEPTION   COMMENCEMENT
                            SEC               PERIOD        PERIOD        PERIOD        DATE        OF OPERATIONS***
                            YIELD             ENDED         ENDED         ENDED         THROUGH     THROUGH
                            AT 12/31/96       12/31/96      12/31/96      12/31/96      12/31/96**  12/31/96
                            ------------      ------------  ------------  ----------    ----------  ---------------- 
<S>                         <C>               <C>           <C>           <C>           <C>         <C>
FUND
- ----
Growth......................     N/A            19.86%         14.77%       11.39%         13.27%      14.42%
Core Value..................     N/A            21.16%         17.54%       15.70%         14.27%      15.21%
Small Cap                                                                                           
  Value.....................     N/A            30.35%         16.47%       17.38%         20.59%      20.85%
International                                                                                       
  Equity....................     N/A            18.30%          8.11%       10.69%         10.33%      10.11%
Worldwide...................     N/A              N/A            N/A          N/A           8.26%       9.24%
Bond........................    7.88%           10.29%         11.77%       14.29%         14.52%      14.32%
Global Bond.................    5.92%           15.02%          9.17%        8.50%         10.63%      10.51%
U.S. Government                                                                                     
  Securities................    6.05%            1.32%          5.33%        8.02%          9.86%       9.86%
Municipal Bond..............    4.57%            3.33%          4.45%        6.80%          7.51%       7.55%
Short-Term Bond.............    5.51%            4.68%          5.62%         N/A           5.59%       5.60%
High Yield..................    9.34%             N/A            N/A          N/A           1.73%       3.05%
</TABLE>     
<PAGE>
 
- -----------------------
    
* Performance (for other than the one-year and three-year periods for the 
Growth, Core Value, Small Cap Value and Bond Funds, and the one-year period for
the International Equity Fund) would have been lower if a portion of the
management fee had not been waived by Loomis Sayles. In the absence of this
limitation, actual yield and total return would have been as follows: Growth,
11.38%, 13.26% and 14.41% for the five-year period, the period since modified
inception and the period since commencement of operations, respectively; Core
Value, 15.61%, 14.14% and 15.08% for the five-year period, the period since
modified inception and the period since commencement of operations,
respectively; Small Cap Value, 17.36%, 20.53% and 20.79% for the five-year
period, the period since modified inception and the period since commencement of
operations, respectively; International Equity, 8.11%, 10.49%, 10.01% and 9.79%
for the three-year period, the five-year period, the period since modified
inception and the period since commencement of operations, respectively;
Worldwide, 6.45% and 7.43% for the period since modified inception and
the period since commencement of operations; Bond, 14.23%, 14.42% and 14.22% for
the five-year period, the period since modified inception, and the period since
commencement of operations, respectively; Global Bond, 5.65% (yield), and
14.75%, 9.04%, 8.28%, 10.27% and 10.15% for the one-year period, the three-year
period, the five-year period, the period since modified inception and the period
since commencement of operations, respectively; U.S. Government Securities,
5.86% (yield), and 1.13%, 5.14%, 7.74%, 9.54% and 9.54% for the one-year period,
the three-year period, the five-year period, the period since modified inception
and the period since commencement of operations, respectively; Municipal Bond,
5.26% (yield), and 2.01%, 3.29%, 4.81%, 4.11% and 4.15% for the one-year period,
the three-year period, the five-year period, the period since modifiefd
inception and the period since commencement of operations, respectively; Short-
Term Bond, 5.34% (yield), and 4.51%, 5.47%, 5.18% and 5.19% for the one-year
period, the three-year period, the period since     
<PAGE>
 
    
modified inception and the period since commencement of investment operations,
respectively; and High Yield, 6.62% (yield), 0.82% and 2.14% for the period
since modified inception and the period since commencement of operations.     

    
** The modified inception date is the nearest month end date following actual
commencement of operations. For the Short-Term Bond Fund the modified inception
date is August 31, 1992, for the Worldwide Fund May 31, 1996, for the High Yield
Fund September 30, 1996 and for all other Funds May 31, 1991.    

    
*** Actual Inception Dates:
            Growth.......................................May 16, 1991
            Core Value...................................May 13, 1991
            Small Cap Value..............................May 13, 1991
            International Equity.........................May 10, 1991
            Worldwide....................................May 1, 1991
            Bond.........................................May 16, 1991
            Global Bond..................................May 10, 1991
            U.S. Government Securities...................May 21, 1991
            Municipal Bond...............................May 29, 1991
            Short-Term Bond..............................August 3, 1992
            High Yield...................................September 11, 1996     

                PORTFOLIO MANAGERS' PAST PERFORMANCE INFORMATION
                                        
EQUITY FUNDS--INSTITUTIONAL

    
     The performance information presented in the tables below relates to
institutional private accounts and mutual funds managed by the portfolio
managers of the Small Cap Growth Fund and the Strategic Value Fund that have
investment objectives and policies substantially similar to those of the
relevant Fund.  The accounts are not subject to the same types of expenses to
which the Funds are subject, nor to the diversification requirements, specific
tax restrictions and investment limitations imposed on the Funds by the 1940 Act
or subchapter M of the Internal Revenue Code.  The performance results for the
accounts shown below might have been less favorable had the accounts been
subject to regulation as investment companies under the relevant federal laws.
The Funds are newly organized and have no performance record of their own
through December 31, 1996.  The information below should not be considered a
prediction of the future performance of any Fund.  The performance of the Funds
may be higher or lower than the performance of a fund or account that has
substantially similar investment objectives and policies.  Except as otherwise
noted, the performance information shown below for the accounts and funds
described below is adjusted to give effect to the higher of the level of the
actual expenses of the accounts during the periods shown or the annualized
expenses projected for the relevant Fund's Institutional Class shares during the
1997 fiscal year.  Total return information presented below represents average
annual total return for all periods other than year-to-date periods, for which
cumulative total return is presented.     
<PAGE>
 
SMALL CAP GROWTH ACCOUNTS

     Christopher R. Ely, Portfolio Manager of the Small Cap Growth Fund, and
Philip C. Fine and David L. Smith, Assistant Portfolio Managers of the Small Cap
Growth Fund, also serve, and have served, in those capacities for other separate
accounts that have investment objectives and investment policies substantially
similar to those of the Small Cap Growth Fund (the "Small Cap Growth Accounts").
Prior to July 22, 1996, Messrs. Ely, Fine and Smith were affiliated with another
advisory firm, and not with Loomis Sayles.  The following table shows total
returns for the year-to-date, one-year and two-year periods ended June 30, 1996
for the Small Cap Growth Accounts.  The table also shows the total return of the
Lipper Small Company Growth Mutual Fund Index and the Russell 2000 Index for the
same periods.  The information presented in the paragraph below the table
represents the total return of the Keystone Institutional Small Capitalization
Growth Fund and Keystone Small Company Growth Fund II, which have investment
objectives and policies substantially similar to those of the Small Cap Growth
Fund and which, from their inception through July 11, 1996, were managed by
Messrs. Ely, Fine and Smith in their capacities as employees of the firm with
which they were then affiliated.
<TABLE>
<CAPTION>
 
                        SMALL CAP           LIPPER SMALL COMPANY   RUSSELL   
                        GROWTH ACCOUNTS(1)  MUTUAL FUND INDEX      2000 INDEX
                        ------------------  --------------------   ----------
<S>                     <C>                 <C>                   <C>
YEAR-TO-DATE
1/1/96 to 6/30/96..           12.49%               14.08%            10.40%
ONE YEAR                                        
7/1/95 to 6/30/96..           49.75%               30.12%            23.94%
TWO-YEAR/SINCE                                  
INCEPTION                                       
(ANNUALIZED)                                    
7/1/94-6/30/96.....           47.53%               28.04%            21.99%
</TABLE>
    
     The total return for the Keystone Institutional Small Capitalization Growth
Fund was 16.50% since inception (December 28, 1995 to June 30, 1996).  The total
return for the Keystone Small Company Growth Fund II was 7.10% for the period
since inception (February 20, 1996) to June 30, 1996.  The total returns for the
Keystone Institutional Small Capitalization Growth Fund and the Keystone Small
Company Growth Fund II were not included in the calculation of the total returns
for the Small Cap Growth Accounts shown in the table.       

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

(1)  The composite average annual and total return data presented above under
"Small Cap
<PAGE>
 
Growth Accounts" represent all of the accounts which (1) were managed by the
Loomis Sayles managers during the periods shown, (2) have transferred their
portfolio assets to Loomis Sayles and (3) are currently being managed by the
Loomis Sayles managers.  The composite average annual and total return data do
not include accounts which were managed by the Loomis Sayles managers during the
periods shown, but were not transferred to Loomis Sayles.

STRATEGIC VALUE ACCOUNTS

    
     Philip J. Schettewi, portfolio manager of the Strategic Value Fund,
also serves as portfolio manager for other separate accounts that have
investment objectives and policies that are substantially similar to those of
the Strategic Value Fund (the "Strategic Value Accounts") . The following table
shows the total returns for the year-to-date, one-year, three-year, five-year
and since inception periods for the Strategic Value Accounts.  The table also
shows the total return of the Lipper Growth & Income Mutual Fund Index and the
Standard & Poor's 500 Composite Stock Price Index (the "S&P 500") for the same
periods.     
 
<PAGE>
 
<TABLE>    
<CAPTION>
 
                      STRATEGIC VALUE   LIPPER GROWTH & INCOME
                          ACCOUNTS         MUTUAL FUND INDEX      S&P 500
                      ----------------  -----------------------   --------
<S>                   <C>               <C>                       <C>
ONE YEAR
1/1/96 to 12/31/96..       20.27%              20.69%              22.95%
THREE-YEAR                                                    
(ANNUALIZED)                                                  
1/1/94 to 12/31/96..       12.91%              16.38%              19.65%
FIVE-YEAR                                                     
(ANNUALIZED)                                                  
1/1/92-12/31/96.....       16.57%              14.65%              15.20%
SINCE INCEPTION                                               
(ANNUALIZED)                                                  
3/31/91-12/31/96....       17.24%              14.83%              15.68%
</TABLE>     

EQUITY FUNDS--RETAIL

    
      The performance information presented in the tables below relates to
institutional private accounts and mutual funds managed by the portfolio
managers of the Small Cap Growth Fund and the Strategic Value Fund that have
investment objectives and policies substantially similar to those of the
relevant Fund.  The accounts are not subject to the same types of expenses to
which the Funds are subject, nor to the diversification requirements, specific
tax restrictions and investment limitations imposed on the Funds by the 1940 Act
or subchapter M of the Internal Revenue Code.  The performance results for the
accounts shown below might have been less favorable had the accounts been
subject to regulation as investment companies under the relevant federal laws.
The Funds are newly organized and have no performance record of their own
through December 31, 1996.  The information below should not be considered a
prediction of the future performance of any Fund.  The performance of the Funds
may be higher or lower than the performance of a fund or account that has
substantially similar investment objectives and policies.  Except as otherwise
noted, the performance information shown below for the accounts and funds
described below is adjusted to give effect to the higher of the level of the
actual expenses of the accounts during the periods shown or the annualized
expenses projected for the relevant Fund's Retail Class shares during the 1997
fiscal year.  Total return information presented below represents average annual
total return for all periods other than year-to-date periods, for which
cumulative total return is presented.     

    
SMALL CAP GROWTH ACCOUNTS     

    
      Christopher R. Ely, Portfolio Manager of the Small Cap Growth Fund, and
Philip C. Fine and David L. Smith, Assistant Portfolio Managers of the Small Cap
Growth Fund, also serve, and have served, in those capacities for other separate
accounts that have investment objectives and investment policies substantially
similar to those of the Small Cap Growth Fund (the "Small Cap Growth Accounts").
Prior to July 22, 1996, Messrs. Ely, Fine and Smith were affiliated with another
advisory firm, and not with Loomis Sayles. The following table shows total
returns     
<PAGE>
 
     
for the year-to-date, one-year and two-year periods ended June 30, 1996 for the
Small Cap Growth Accounts.  The table also shows the total return of the Lipper
Small Company Growth Mutual Fund Index and the Russell 2000 Index for the same
periods.  The information presented in the paragraph below the table represents
the total return of the Keystone Institutional Small Capitalization Growth Fund
and Keystone Small Company Growth Fund II, which have investment objectives and
policies substantially similar to those of the Small Cap Growth Fund and which,
from their inception through July 11, 1996, were managed by Messrs. Ely, Fine
and Smith in their capacities as employees of the firm with which they were then
affiliated.     

<TABLE>
<CAPTION>
 
                     SMALL CAP            LIPPER SMALL COMPANY   RUSSELL   
                     GROWTH ACCOUNTS(1)   MUTUAL FUND INDEX      2000 INDEX
                     ------------------   -----------------      ----------
<S>                  <C>                  <C>                    <C>
YEAR TO-DATE
1/1/96 to 6/30/96..        12.35%               14.08%             10.40%
ONE YEAR                                                  
7/1/95 to 6/30/96..        49.39%               30.12%             23.94%
TWO YEAR/SINCE                                            
INCEPTION                                                 
(ANNUALIZED)                                              
7/1/94-6/30/96.....        47.17%               28.04%             21.99%
</TABLE>

    
     The total return for the Keystone Institutional Small Capitalization Growth
Fund was 16.50% since inception (December 28, 1995 to June 30, 1996).  The total
return for the Keystone Small Company Growth Fund II was 7.10% for the period
since inception (February 20, 1996) to June 30, 1996.  The total returns for the
Keystone Institutional Small Capitalization Growth Fund and the Keystone Small
Company Growth Fund II were not included in the calculation of the total returns
for the Small Cap Growth Accounts shown in the table.       

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

(1)   The composite average annual and total return data presented above under
"Small Cap Growth Accounts" represent all of the accounts which (1) were managed
by the Loomis Sayles managers during the periods shown, (2) have transferred
their portfolio assets to Loomis Sayles and (3) are currently being managed by
the Loomis Sayles managers.  The composite average annual and total return data
do not include accounts which were managed by the Loomis Sayles managers during
the periods shown, but were not transferred to Loomis Sayles.

STRATEGIC VALUE ACCOUNTS

    
     Philip J. Schettewi, portfolio manager of the Strategic Value Fund, also
serves as portfolio manager for other separate accounts that have investment
objectives and policies that are substantially similar to those of the Strategic
Value Fund (the "Strategic Value Accounts"). The following table shows the total
returns for the year-to-date, one-year, three-year, five-year     
<PAGE>
 
     
and since inception periods for the Strategic Value Accounts.  The table also
shows the total return of the Lipper Growth & Income Mutual Fund Index and the
Standard & Poor's/500 Composite Stock Price Index (the "S&P 500") for the same
periods.     

<TABLE>    
<CAPTION>
 
 
                       STRATEGIC VALUE   LIPPER GROWTH & INCOME
                       ACCOUNTS          MUTUAL FUND INDEX        S&P 500
                       ----------------  -----------------------  --------
<S>                    <C>               <C>                      <C>
ONE YEAR
1/1/96 to 12/31/96...       19.69%              20.69%             22.95%
THREE-YEAR                                                         
(ANNUALIZED)                                                       
1/1/94 to 12/31/96...       12.36%              16.38%             19.65%
FIVE-YEAR                                                          
(ANNUALIZED)                                                       
1/1/92 to 12/31/96...       16.01%              14.65%             15.20%
SINCE INCEPTION                                                    
(ANNUALIZED)                                                       
3/31/91 to 12/31/96..       16.65%              14.83%             15.68%
</TABLE>     

FIXED INCOME FUNDS--INSTITUTIONAL

    
      The performance information presented in the tables below relates to the
institutional private accounts and mutual funds managed by the portfolio
managers of the High Yield, Investment Grade Bond and Intermediate Maturity Bond
Funds that have investment objectives and policies substantially similar to
those of the respective Fund.  The accounts are not subject to the same types of
expenses to which the Funds are subject, nor to the diversification
requirements, specific tax restrictions and investment limitations imposed on
the Funds by the 1940 Act or subchapter M of the Internal Revenue Code.  The
performance results for the accounts shown below might have been less favorable
had the accounts been subject to regulation as investment companies under the
relevant federal laws.  The Funds (other than the High Yield Fund, which
commenced investment operations on September 11, 1996) are newly organized and
have no performance record of their own through December 31, 1996.  For
information relating to the peformance of the High Yield Fund, see "PERFORMANCE
DATA," above.  The information below should not be considered a prediction of
the future performance of any Fund.  The performance may be higher or lower than
the performance of a fund or account that has substantially similar investment
objectives and policies.  All private account performance information shown
below is adjusted to give effect to the higher of the level of the actual
expenses of the accounts described below during the periods shown or the
annualized expenses projected for the relevant Fund's Institutional Class shares
during the 1997 fiscal year. Total return information presented below represents
average annual total return for all periods other than year-to-date periods, for
which cumulative total return is presented.     

HIGH YIELD ACCOUNTS

    
       Daniel J. Fuss and Kathleen C. Gaffney, portfolio manager and associate
portfolio manager of the High Yield Fund, also serve in the same capacities for
other separate accounts that have investment objectives and investment policies
that are substantially similar to those of     
<PAGE>
 
     
the High Yield Fund (the "High Yield Accounts").  The following table shows the
total return for the year-to-date, one-year, three-year, five-year and ten-year
periods ended December 31, 1996 for the High Yield Accounts.  The table also
shows the total return of the Lipper High Current Yield Mutual Fund Index and
the Merrill Lynch High Yield Index for the same periods.  The information
presented in the paragraph below the table represents the total return of the
Loomis Sayles High Yield Fixed Income Fund, a series of Loomis Sayles Investment
Trust which has an investment objective and investment policies substantially
similar to those of the High Yield Fund.     

<TABLE>    
<CAPTION>
 
 
                         HIGH YIELD  LIPPER HIGH CURRENT YIELD  MERRILL LYNCH
                         ACCOUNTS    MUTUAL FUND INDEX          HIGH YIELD INDEX
                         ----------  -------------------------  ----------------
<S>                      <C>         <C>                        <C>
ONE YEAR                 
1/1/96 to 12/31/96......  11.05%             12.66%                11.06%
THREE-YEAR (ANNUALIZED)                                           
1/1/94 to 12/31/96......  11.72%              8.40%                 9.59%
FIVE-YEAR (ANNUALIZED)                                            
1/1/92 to 12/31/96......  16.61%             12.56%                12.76%
TEN-YEAR (ANNUALIZED)                                             
1/1/87-12/31/96.........  13.31%              9.75%                11.25%
</TABLE>     

    
     The total return of the High Yield Fixed Income Fund was 7.68% for the
period from inception (June 5, 1996) to December 31, 1996.  The total return of
the High Yield Fixed Income Fund was not included in the calculation of the
total returns for the High Yield Accounts shown in the table.  The performance
information presented for the High Yield Fixed Income Fund has not been adjusted
to reflect that the Fund's expense ratio is expected to be higher than the
expense ratio of the High Yield Fixed Income Fund.  If adjustments were made to
reflect the Fund's higher expense level, the total return presented would be
lower.     

INVESTMENT GRADE BOND ACCOUNTS

    
     Daniel J. Fuss, portfolio manager of the Investment Grade Bond Fund,
also serves as the portfolio manager of other separate accounts that have
investment objectives and investment policies that are substantially similar to
those of the Investment Grade Bond Fund (the "Investment Grade Bond Accounts").
The following table shows the total return for the year-to-date, one-year,
three-year, five-year and ten-year periods ended December 31, 1996 for the
Investment Grade Bond Accounts. The following table also shows the total return
of the Lipper BBB Rated Bond Mutual Fund Index and the Lehman Brothers
Government/Corporate Bond Index for the same periods. The information presented
in the paragraph below the table represents the total return of the Loomis
Sayles Investment Grade Fixed Income Fund, a series of Loomis Sayles Investment
Trust which has an investment objective and investment policies substantially
similar to those of the Investment Grade Bond Fund.     
<PAGE>
 
<TABLE>    
<CAPTION>
 
                                                 LIPPER BBB
                                                 RATED BOND      LEHMAN BROTHERS
                           INVESTMENT GRADE        MUTUAL        GOV'T/CORPORATE
                             BOND ACCOUNTS       FUND INDEX        BOND INDEX
                           -----------------  ----------------  ----------------
<S>                        <C>                <C>               <C>
ONE YEAR
1/1/96 to 12/31/96.......        6.01%              4.12%             2.90%
THREE-YEAR (ANNUALIZED)                            
1/1/94 to 12/31/96.......        8.32%              6.10%             5.79%
FIVE-YEAR (ANNUALIZED)                             
1/1/92 to 12/31/96.......       10.13%              7.81%             7.18%
TEN-YEAR (ANNUALIZED)                              
1/1/87 to 12/31/96.......       10.53%              8.44%             8.38%
</TABLE>     

    
     The total return for the Loomis Sayles Investment Grade Fixed Income
Fund was 15.54% for the period since inception (July 1, 1994), 16.68% for the
two-year period and 10.87% for the one-year period, in each case ended December
31, 1996 (annualized for periods greater than one year). The total return of the
Investment Grade Fixed Income Fund was not included in the calculation of the
total return of the Investment Grade Bond Accounts shown in the table. The
performance information presented for the Investment Grade Fixed Income Fund has
not been adjusted to reflect that the Fund's expense ratio is expected to be
higher than the expense ratio of the Investment Grade Fixed Income Fund. If
adjustments were made to reflect the Fund's higher expense level, the total
return presented would be lower.     

INTERMEDIATE MATURITY ACCOUNTS

    
          Anthony J. Wilkins, portfolio manager of the Intermediate Maturity
Bond Fund, also serves as the portfolio manager of other separate accounts that
have investment objectives and investment policies that are substantially
similar to those of the Intermediate Maturity Bond Fund's (the "Intermediate
Maturity Accounts").  The following table shows the total returns for the year-
to-date, one-year, three-year and since inception periods ended December 31,1996
for the Intermediate Maturity Accounts.  The table also shows the total return
of the Lipper Intermediate Investment Grade Debt Mutual Fund Index and the
Lehman Brothers Government/Corporate Intermediate Bond Index for the same
periods.     

<TABLE>    
<CAPTION>
                                                               LEHMAN BROTHERS
                          INTERMEDIATE   LIPPER INTERMEDIATE   GOV'T/CORPORATE
                            MATURITY    INVESTMENT GRADE DEBT    INTERMEDIATE
                            ACCOUNTS      MUTUAL FUND INDEX       BOND INDEX
                          ------------  ---------------------  ---------------
<S>                       <C>           <C>                    <C>
ONE YEAR                
1/1/96 to 12/31/96......        5.62%               3.20%             4.05%
THREE-YEAR             
(ANNUALIZED)                             
1/1/94 to 12/31/96......        7.38%               5.37%             5.58%
SINCE INCEPTION        
(ANNUALIZED)                        
6/30/92 to 12/31/96.....        9.12%               6.77%             6.58%
</TABLE>     
<PAGE>
 
FIXED INCOME FUNDS--RETAIL

    
     The performance information presented in the tables below relates to
the institutional private accounts and mutual funds managed by the portfolio
managers of the High Yield, Investment Grade Bond and Intermediate Maturity Bond
Funds that have investment objectives and policies substantially similar to
those of the respective Fund.  The accounts are not subject to the same types of
expenses to which the Funds are subject, nor to the diversification
requirements, specific tax restrictions and investment limitations imposed on
the Funds by the 1940 Act or subchapter M of the Internal Revenue Code.  The
performance results for the accounts shown below might have been less favorable
had the accounts been subject to regulation as investment companies under the
relevant federal laws.  The Funds (other than the High Yield Fund, which
commenced investment operations on September 11, 1996) are newly organized and
have no performance record of their own through December 31, 1996.  For
information relating to the performance of the High Yield Fund, see "PEFORMANCE
DATA," above.  The information below should not be considered a prediction of
the future performance of any Fund.  The performance may be higher or lower than
the performance of a fund or account that has substantially similar investment
objectives and policies.  All private account performance information shown
below is adjusted to give effect to the higher of the level of the actual
expenses of the accounts described below during the periods shown or the
annualized expenses projected for the relevant Fund's Retail Class shares during
the 1997 fiscal year. Total return information presented below represents
average annual total return for all periods other than year-to-date periods, for
which cumulative total return is presented.     

HIGH YIELD ACCOUNTS

    
     Daniel J. Fuss and Kathleen C. Gaffney, portfolio manager and
associate portfolio manager of the High Yield Fund, also serve in the same
capacities for other separate accounts that have investment objectives and
investment policies that are substantially similar to those of the High Yield
Fund (the "High Yield Accounts").  The following table shows the total return
for the year-to-date, one-year, three-year, five-year and ten-year periods ended
December 31, 1996 for the High Yield Accounts.  The table also shows the total
return of the Lipper High Current Yield Mutual Fund Index and the Merrill Lynch
High Yield Index for the same periods.  The information presented in the
paragraph below the table represents the total return of the Loomis Sayles High
Yield Fixed Income Fund, a series of Loomis Sayles Investment Trust which
has an investment objective and investment policies substantially similar to
those of the High Yield Fund.     

<TABLE>    
<CAPTION>
                        HIGH YIELD  LIPPER HIGH CURRENT YIELD   MERRILL LYNCH   
                         ACCOUNTS       MUTUAL FUND INDEX      HIGH YIELD INDEX
                        ---------   -------------------------  ----------------
<S>                     <C>         <C>                        <C>
ONE YEAR               
1/1/96 to 12/31/96.....   10.78%              12.66%               11.06%
THREE-YEAR                                                     
(ANNUALIZED)                                                   
1/1/94 to 12/31/96.....   11.45%               8.40%                9.59%
FIVE-YEAR                                                      
(ANNUALIZED)                                                   
1/1/92 to 12/31/96.....   16.33%              12.56%               12.76%
TEN-YEAR                                                       
(ANNUALIZED)                                                   
1/1/87-12/31/96........   13.01%               9.75%               11.25%
</TABLE>      
<PAGE>
 
     
     The total return of the High Yield Fixed Income Fund was 7.68% for the
period from inception (June 5, 1996) to December 31, 1996.  The total return of
the High Yield Fixed Income Fund was not included in the calculation of the
total returns for the High Yield Accounts shown in the table.  The performance
information presented for the High Yield Fixed Income Fund has not been adjusted
to reflect that the Fund's expense ratio is expected to be higher than the
expense ratio of the High Yield Fixed Income Fund.  If adjustments were made to
reflect the Fund's higher expense level, the total return presented would be
lower.     

INVESTMENT GRADE BOND ACCOUNTS

    
     Daniel J. Fuss, portfolio manager of the Investment Grade Bond Fund,
also serves as the portfolio manager of other separate accounts that have
investment objectives and investment policies that are substantially similar to
those of the Investment Grade Bond Fund (the "Investment Grade Bond Accounts").
The following table shows the total return for the year-to-date, one-year,
three-year, five-year and ten-year periods ended December 31, 1996
for the Investment Grade Bond Accounts.  The following table also shows the
total return of the Lipper BBB Rated Bond Mutual Fund Index and the Lehman
Brothers Government/Corporate Bond Index for the same periods.  The information
presented in the paragraph below the table represents the total return of the
Loomis Sayles Investment Grade Fixed Income Fund, a series of Loomis Sayles
Investment Trust which has an investment objective and investment policies
substantially similar to those of the Investment Grade Bond Fund.     

<TABLE>    
<CAPTION>
                                         LIPPER BBB
                                         RATED BOND     LEHMAN BROTHERS 
                       INVESTMENT GRADE  MUTUAL         GOV'T/CORPORATE
                       BOND ACCOUNTS     FUND INDEX     BOND INDEX
                       ----------------  ----------     ---------------
<S>                    <C>               <C>            <C>
ONE YEAR             
1/1/96 to 12/31/96...        5.75%          4.12%            2.90%
THREE-YEAR                                              
(ANNUALIZED)                                            
1/1/94 to 12/31/96...        8.06%          6.10%            5.79%
FIVE-YEAR                                               
(ANNUALIZED)                                            
1/1/92 to 12/31/96...        9.98%          7.81%            7.18%
TEN-YEAR                                                
(ANNUALIZED)                                            
1/1/87 to 12/31/96...       10.27%          8.44%            8.38%
</TABLE>     
<PAGE>
 
    
     The total return for the Loomis Sayles Investment Grade Fixed Income
Fund was 15.54% for the period since inception (July 1, 1994), 16.68% for the
two-year period and 10.87% for the one-year period, in each case ended December
31, 1996.  The total return of the Investment Grade Fixed Income Fund was not
included in the calculation of the total return of the Investment Grade Bond
Accounts shown in the table.  The performance information presented for the
Investment Grade Fixed Income Fund has not been adjusted to reflect that the
Fund's expense ratio is expected to be higher than the expense ratio of the
Investment Grade Fixed Income Fund.  If adjustments were made to reflect the
Fund's higher expense level, the total return presented would be lower.      


INTERMEDIATE MATURITY ACCOUNTS
    
        Anthony J. Wilkins, portfolio manager of the Intermediate Maturity Bond
Fund, also serves as the portfolio manager of other separate accounts that have
investment objectives and investment policies that are substantially similar to
those of the Intermediate Maturity Bond Fund's (the "Intermediate Maturity
Accounts").  The following table shows the total returns for the year-to-date,
one-year, three-year and since inception periods ended December 31, 1996 for
the Intermediate Maturity Accounts.  The table also shows the total return of
the Lipper Intermediate Investment Grade Debt Mutual Fund Index and the Lehman
Brothers Government/Corporate Intermediate Bond Index for the same periods.     

<TABLE>    
<CAPTION>
                                             LIPPER
                                             INTERMEDIATE      LEHMAN BROTHERS
                             INTERMEDIATE    INVESTMENT GRADE  GOV'T/CORPORATE
                             MATURITY        DEBT MUTUAL       INTERMEDIATE
                             ACCOUNTS        FUND INDEX        BOND INDEX
                             ------------    ----------------  ---------------
<S>                          <C>             <C>               <C>
ONE YEAR                   
1/1/96 to 12/31/96.........      5.36%            3.20%             4.05%
THREE-YEAR (ANNUALIZED)                           
1/1/94 to 12/31/96.........      7.12%            5.37%             5.58%
SINCE INCEPTION                                   
(ANNUALIZED)                                      
6/30/92 to 12/31/96........      8.84%            6.77%             6.58%
 
</TABLE>     
<PAGE>
 
                                                                      APPENDIX A

PUBLICATIONS THAT MAY CONTAIN FUND INFORMATION

ABC and affiliates                        Economist
Adam Smith's Money World                  Dorfman, Dan (syndicated column)
America On Line                           Dow Jones News Service
Anchorage Daily News                      FACS of the Week
Atlanta Constitution                      Fee Adviser
Atlanta Journal                           Financial News Network
Arizona Republic                          Financial Planning
Austin American Statesman                 Financial Planning on Wall Street
Baltimore Sun                             Financial Research Corp.
Bank Investment Marketing                 Financial Services Week
Barron's                                  Financial World
Bergen County Record (NJ)                 Fitch Insights
Bloomberg Business News                   Forbes
Bond Buyer                                Fort Worth Star-Telegram
Boston Business Journal                   Fortune
Boston Globe                              Fox Network and affiliates
Boston Herald                             Fund Action
Broker World                              Fund Decoder
Business Radio Network                    Global Finance
Business Week                             (the) Guarantor
CBS and affiliates                        Hartford Courant
CDA Investment Technologies               Houston Chronicle
CFO                                       INC
Changing Times                            Indianapolis Star
Chicago Sun Times                         Individual Investor
Chicago Tribune                           Institutional Investor
Christian Science Monitor                 International Herald Tribune
Christian Science Monitor News Service    Internet
Cincinnati Enquirer                       Investment Advisor
Cincinnati Post                           Investment Company Institute
CNBC                                      Investment Dealers Digest
CNN                                       Investment Profiles
Columbus Dispatch                         Investment Vision
CompuServe                                Investor's Daily
Dallas Morning News                       IRA Reporter
Dallas Times-Herald                       Journal of Commerce
Denver Post                               Kansas City Star
Des Moines Register                       KCMO (Kansas City)
Detroit Free Press                        KOA-AM (Denver)
Donoghues Money Fund Report               LA Times
<PAGE>
 
Leckey, Andrew (syndicated column)      Rukeyser's Business (syndicated column)
Life Association News                   Sacramento Bee
Lifetime Channel                        San Diego Tribune
Miami Herald                            San Francisco Chronicle
Milwaukee Sentinel                      San Francisco Examiner
Money Magazine                          San Jose Mercury
Money Maker                             Seattle Post-Intelligencer
Money Management Letter                 Seattle Times
Morningstar                             Securities Industry Management
Mutual Fund Market News                 Smart Money
Mutual Funds Magazine                   St. Louis Post Dispatch
National Public Radio                   St. Petersburg Times
National Underwriter                    Standard & Poor's Outlook
NBC and affiliates                      Standard & Poor's Stock Guide
New England Business                    Stanger's Investment Advisor
New England Cable News                  Stockbroker's Register
New Orleans Times-Picayune              Strategic Insight
New York Daily News                     Tampa Tribune
New York Times                          Time
Newark Star Ledger                      Tobias, Andrew (syndicated column)
Newsday                                 Toledo Blade
Newsweek                                UP
Nightly Business Report                 US News and World Report
Orange County Register                  USA Today
Orlando Sentinel                        USA TV Network
Palm Beach Post                         Value Line
Pension World                           Wall Street Journal
Pensions and Investments                Wall Street Letter
Personal Investor                       Wall Street Week
Philadelphia Inquirer                   Washington Post
Porter, Sylvia (syndicated column)      WBZ
Portland Oregonian                      WBZ-TV
Prodigy                                 WCVB-TV
Public Broadcasting Service             WEEI
Quinn, Jane Bryant (syndicated column)  WHDH
Registered Representative               Worcester Telegram
Research Magazine                       World Wide Web
Resource                                Worth Magazine
Reuters                                 WRKO
Rocky Mountain News
<PAGE>
 
                                                                      APPENDIX B

                    ADVERTISING AND PROMOTIONAL LITERATURE

Loomis Sayles Funds' advertising and promotional material may include, but is
not limited to, discussions of the following information:

     Loomis Sayles Funds' participation in wrap fee and no transaction fee
     programs

     Characteristics of Loomis Sayles including the number and locations of its
     offices, its investment practices and clients

     Specific and general investment philosophies, strategies, processes and
     techniques

     Specific and general sources of information, economic models, forecasts and
     data services utilized, consulted or considered in the course of providing
     advisory or other services

     Industry conferences at which Loomis Sayles participates

     Current capitalization, levels of profitability and other financial
     information

     Identification of portfolio managers, researchers, economists, principals
     and other staff members and employees

     The specific credentials of the above individuals, including but not
     limited to, previous employment, current and past positions, titles and
     duties performed, industry experience, educational background and degrees,
     awards and honors

     Specific identification of, and general reference to, current individual,
     corporate and institutional clients, including pension and profit sharing
     plans

     Current and historical statistics relating to:

               --total dollar amount of assets managed
               --Loomis Sayles assets managed in total and by Fund        
               --the growth of assets
               --asset types managed
    
     Individuals who have achieved business, professional or personal success
     through the "Power of a Passion." These individuals may not necessarily be
     investors in the Funds, and may not have any other relationship to the
     Funds or their adviser. In instances where advertisements describe these
     individuals, their success is not attributable to the Funds or their
     adviser. In instances where advertisements describe successful      
<PAGE>
 
         
     business ventures, the Funds or Loomis Sayles may or may not invest in
     these ventures.      

     References may be included in Loomis Sayles Funds' advertising and
     promotional literature about 401(k) and retirement plans that offer the
     Funds. The information may include, but is not limited to:
              
          Specific and general references to industry statistics regarding
          401(k) and retirement plans including historical information and
          industry trends and forecasts regarding the growth of assets, numbers
          or plans, funding vehicles, participants, sponsors and other
          demographic data relating to plans, participants and sponsors, third
          party and other administrators, benefits consultants and firms with
          whom Loomis Sayles may or may not have a relationship.      
              
          Specific and general reference to comparative ratings, rankings and
          other forms of evaluation as well as statistics regarding the Fund as
          401(k) or retirement plan funding vehicles produced by industry
          authorities, research organizations and publications.      
<PAGE>
 
Part C.    OTHER INFORMATION
           -----------------

Item 24.   Financial Statements and Exhibits
           ---------------------------------

  (a)      Financial statements:  See "Financial Highlights" contained in the
           Prospectus.

  (b)      Exhibits:

  1.      Agreement and Declaration of Trust.(1)

  2.      By-Laws.(1)

  3.      Not Applicable.

  4.      Form of Share Certificate.(2)

  5(a).   Form of Investment Advisory Agreement.(1)
<PAGE>
 
        
   5(b).   Form of Amendment No. 1 to Investment Advisory Agreement for the
           Growth Fund.(7)      
       
   5(c).   Form of Amendment No. 1 to Investment Advisory Agreement for the Core
           Value Fund.(7)      
        
   5(d).   Form of Amendment No. 1 to Advisory Agreement for the Small Cap Value
           Fund. (7)      
       
   5(e).   Form of Amendment No. 1 to Investment Advisory Agreement for the
           International Equity Fund.(7)      
        
   5(f).   Form of Amendment No. 1 to Investment Advisory Agreement for the
           Worldwide Fund. (7)      
        
   5(g).   Form of Amendment No. 1 to Investment Advisory Agreement for the
           Global Bond Fund.(7)       
        
   5(i).   Form of Amendment No. 1 to Investment Advisory Agreement for the
           Municipal Bond Fund.(7)      
        
   5(j).   Form of Amendment No. 1 to Investment Advisory Agreement for the
           Short-Term Bond Fund.(7)      
        
   5(k).   Form of Investment Advisory Agreement for the Small Cap Growth
           Fund.(7)      
       
   5(l).   Form of Investment Advisory Agreement for the Investment Grade Bond
           Fund.(7)      
       
   5(m).   Form of Investment Advisory Agreement for the Mid-Cap Value Fund.(7)
                 
       
   5(n).   Form of Investment Advisory Agreement for the Mid-Cap Growth Fund.(7)
                
       
   5(o).   Form of Investment Advisory Agreement for the Strategic Value
           Fund.(7)      
       
   5(p).   Form of Investment Advisory Agreement for the Intermediate Maturity
           Bond Fund.(7)      
       
   6.      Form of Distribution Agreement.(7)      
  
   7.      Not Applicable.
   
   8(a).   Form of Custodian Agreement.(2)
       
   8(b).   Letter Agreement between the Registrant and State Street Bank and
           Trust Company      
<PAGE>
 
       
           relating to the applicability of the Custodian Agreement to
           Loomis Sayles Short-Term Bond Fund.                  
        
   8(c).   Letter Agreement between the Registrant and State Street Bank and
           Trust Company relating to the applicability of the Custodian
           Agreement to Loomis Sayles Hight Yield Fund.      
        
   8(d).   Letter Agreement between the Registrant and State Street Bank and
           Trust Company relating to the applicability of the Custodian
           Agreement to Loomis Sayles Intermediate Maturity Bond Fund, Loomis
           Sayles Investment Grade Bond Fund, Loomis Sayles Mid-Cap Growth Fund,
           Loomis Sayles Mid-Cap Value Fund, Loomis Sayles Small Cap Growth Fund
           and Loomis Sayles Strategic Value Fund.      
        
   8(e).   Form of Letter Agreement between the Registrant and State Street Bank
           and Trust Company relating to the applicability of the Custodian
           Agreement to Loomis Sayles Worldwide Fund.      

   9(a).   Form of Shareholder's Servicing and Transfer Agent Agreement.(2)
       
   9(b).   Letter Agreement between the Registrant and State Street Bank and
           Trust Company relating to the applicability of the Transfer Agency
           and Service Agreement to Loomis Sayles Short-Term Bond Fund.      
        
   9(c).   Letter Agreement between the Registrant and State Street Bank and
           Trust Company relating to the applicability of the Transfer Agency
           and Service Agreement to Loomis Sayles High Yield Fund and Loomis
           Sayles Worldwide Fund.      
       
   9(d).   Letter Agreement between the Registrant and State Street Bank and
           Trust Company relating to the applicability of the Transfer Agency
           and Service Agreement to Loomis Sayles Intermediate Maturity Bond
           Fund, Loomis Sayles Investment Grade Bond fund, Loomis Sayles Mid-Cap
           Growth Fund, Loomis Sayles Mid-Cap Value Fund, Loomis Sayles Small
           Cap Growth Fund and Loomis Sayles Strategic Value Fund.      
       
   10.     Opinion and Consent of Counsel.(7)      

   11.     Consent of Coopers & Lybrand L.L.P.

   12.     Not Applicable.

   13(a).  Investment Representation Regarding Initial Shares.(2)

   13(b).  Form of Organizational Expense Reimbursement Agreement.(2)
<PAGE>
 
   14.     Form of IRA prototype documents.(2)
       
   15.     Form of Distribution Plan.(7)      
       
   16.     Schedule for Performance Computations.(7)      

   17(a).  Financial Data Schedule for Institutional Class shares of Loomis
           Sayles Growth Fund.

   17(b).  Financial Data Schedule for Institutional Class shares of Loomis
           Sayles Core Value Fund.

   17(c).  Financial Data Schedule for Institutional Class shares of Loomis
           Sayles Small Cap Value Fund.
 
   17(d).  Financial Data Schedule for Institutional Class shares of Loomis
           Sayles International Equity Fund.
 
   17(e).  Financial Data Schedule for Institutional Class shares of Loomis
           Sayles Worldwide Fund.
 
   17(f).  Financial Data Schedule for Institutional Class shares of Loomis
           Sayles Bond Fund.
 
   17(g).  Financial Data Schedule for Institutional Class shares of Loomis
           Sayles Global Bond Fund.
 
   17(h).  Financial Data Schedule for Institutional Class shares of Loomis
           Sayles U.S. Government Securities Fund.
 
   17(i).  Financial Data Schedule for Institutional Class shares of Loomis
           Sayles Municipal Bond Fund.
 
   17(j).  Financial Data Schedule for Institutional Class shares of Loomis
           Sayles Short-Term Bond Fund.
         
   17(k).  Financial Data Schedule for Institutional Class shares of Loomis
           Sayles High Yield Fund.        
        
   18.     Form of Rule 18f-3(d) Plan.(7)      
 
   19.     Powers of Attorney.(4)
- --------------------

   (1)     Incorporated by reference to the similarly numbered Exhibit to this
           Registration Statement as originally filed with the Commission on
           February 22, 1991.
<PAGE>
 
   (2)    Incorporated by reference to the similarly numbered Exhibit to Pre-
          Effective Amendment No. 2 to this Registration Statement filed with
          the Commission on May 6, 1991.
          
   (3)    Incorporated by reference to the similarly numbered Exhibit to Post-
          Effective Amendment No. 6 to this Registration Statement filed with
          the Commission on May 1, 1995.

   (4)    Incorporated by reference to Exhibit No. 17 to Post-Effective
          Amendment No. 7 to this Registration Statement filed with the
          Commission on February 16, 1996.
 
   (5)    Incorporated by reference to the similarly numbered Exhibit to Post-
          Effective Amendment No. 9 to this Registration Statement filed with
          the Commission on June 21, 1996.

   (6)    Incorporated by reference to the similarly numbered Exhibit to Post-
          Effective Amendment No. 10 to this Registration Statement filed with
          the Commission on August 30, 1996.

    
   (7)    Incorporated by reference to the similarly numbered Exhibit to Post-
          Effective Amendment No. 11 to this Registration Statement filed with
          the Commission on October 9, 1996.     
 
   Item 25.   Persons Controlled by or under Common Control with Registrant
         ----------------------------------------------------
              
              Not Applicable.
 
 
   Item 26.   Number of Holders of Securities
         ----------------------------------------------------

<TABLE>     
<CAPTION> 

                            Number of Record Holders
                            (as of February 10, 1997)
       Fund                    Institutional Class     Retail Class
       ----                 -------------------------  ------------
  <S>                              <C>                    <C> 
  Bond Fund                          11624                  205

  Core Value Fund                      582                    8

  Global Bond Fund                     330                   43

  Growth Fund                          538                   48

  High Yield Fund                       97                   16

  Intermediate Maturity Bond Fund       10                    4

</TABLE>      
 
<PAGE>
 
<TABLE>    
<CAPTION> 

  <S>                              <C>                    <C> 
  International Equity Fund            730                    6

  Investment Grade Bond Fund             9                    5

  Mid-Cap Growth Fund                   13                    6

  Mid-Cap Value Fund                    25                    5

  Municipal Bond Fund                  104                  N/A

  Short-Term Bond Fund                 203                   12

  Small Cap Growth Fund                 18                    6

  Small Cap Value Fund                2178                   92

  Strategic Value Fund                   6                    5

  U.S. Government Securities Fund      152                  N/A

  Worldwide Fund                        32                    4
</TABLE>     


Item 27.   Indemnification
      ---------------
Incorporated by reference to Item 27 of Post-Effective Amendment No. 1 to this
Registration Statement filed on November 7, 1991.


Item 28.   Business and Other Connections of Investment Adviser
      ----------------------------------------------------

(a)  Loomis, Sayles & Company, L.P. ("Loomis Sayles"), the adviser of the
Registrant, provides investment advice to the eleven series of Loomis Sayles
Investment Trust, seven series of New England Funds Trust I, one series of New
England Funds Trust III, and three series of New England Zenith Funds, all of
which are  registered investment companies, and to other organizations and
individuals.

The sole general partner of Loomis Sayles is Loomis, Sayles & Company,
Incorporated, One Financial Center, Boston, Massachusetts 02111.

Item 29.   Principal Underwriters
      ----------------------

The Trust's principal underwriter is Loomis Sayles Distributors,  L.P., the sole
general partner of which is Loomis Sayles Distributors, Incorporated.
<PAGE>
 
Item 30.   Location of Accounts and Records
      --------------------------------
The following companies maintain possession of the documents required by the
specified rules:

(a) Registrant
Rule 31a-1(b)(4), (9), (10), (11)
Rule 31a-2(a)

(b) State Street Bank and Trust Company
225 Franklin Street
Boston, MA 02110
Rule 31a-1(a)
Rule 31a-1(b)(1), (2), (3), (5), (6), (7), (8)
Rule 31a-2(a)

(c) Loomis, Sayles & Company, L.P.
One Financial Center
Boston, MA  02111
Rule 31a-1(f)
Rule 31a-2(e)

    
(d) Loomis, Sayles Distributors, L.P.
One Financial Center
Boston, MA 02111
Rule 31a-1(d)
Rule 31a-2(c)     

Item 31.   Management Services
      -------------------
Not applicable.

Item 32.   Undertakings
      ------------

(i)    The Registrant undertakes to comply with Section 16(c) of the Investment
       Company Act of 1940 as though such provisions of the Act were applicable
       to the Registrant.

(ii)   The Registrant undertakes to furnish each person to whom a prospectus is
       delivered a copy of Registrant's most recent annual report upon request
       and without charge.

<PAGE>
 
********************
NOTICE

 
A copy of the Agreement and Declaration of Trust of Loomis Sayles Funds (the
"Trust") is on file with the Secretary of State of The Commonwealth
of Massachusetts and notice is hereby given that this Registration Statement
hasbeen executed on behalf of the Trust by an officer of the Trust as an officer
and by its Trustees as trustees and not individually and the obligations of or
arising out of this Registration Statement are not binding upon any of
theTrustees, officers or shareholders individually but are binding only upon the
assets and property of the Trust.
<PAGE>
 
SIGNATURES

    
Pursuant to the requirements of the Securities Act of 1933 and the Investment
Company Act of 1940, the Registrant certifies that it meets all of the
requirements for effectiveness of its Registration Statement pursuant to Rule
485(b) under the Securities Act of 1933 and has duly caused this amendment to
this registration statement to be signed on its behalf by the
undersigned, thereunto duly authorized, in the City of Boston, in The
Commonwealth of Massachusetts on the 10th day of March, 1997.     

LOOMIS SAYLES FUNDS

By: DANIEL J. FUSS*
- -----------------------------
Daniel J. Fuss, President

Pursuant to the requirements of the Securities Act of 1933 and the Investment
Company Act of 1940, this amendment to the Registration Statement of Loomis
Sayles Funds has been signed below by the following persons in the capacities
and on the date indicated.
 
Signature                                   Title
- ------------                                -----

DANIEL J. FUSS*                             President and Trustee
- -------------------------------                           
Daniel J. Fuss

MARK W. HOLLAND*                            Treasurer           
- ------------------------            
Mark W. Holland

EARL W. FOELL*                              Trustee
- -----------------------------          
Earl W. Foell

RICHARD S. HOLWAY*                          Trustee
- ------------------------          
Richard S. Holway

MICHAEL T. MURRAY*                          Trustee
- ------------------------          
Michael T. Murray

TERRY R. LAUTENBACH*                        Trustee
- -------------------------            
Terry R. Lautenbach
<PAGE>
 
*By MARK W. HOLLAND
- -----------------------------------
Mark W. Holland, for himself and as Attorney-in-fact
    
March 10, 1997     
<PAGE>
 
 
EXHIBIT INDEX
EXHIBIT NO.
- -------------
    
   8(b).  Letter Agreement between the Registrant and State Street Bank and
          Trust Company relating to the applicability of the Custodian Agreement
          to Loomis Sayles Short-Term Bond Fund.     
    
   8(c).  Letter Agreement between the Registrant and State Street Bank and
          Trust Company relating to the applicability of the Custodian Agreement
          to Loomis Sayles High Yield Fund.      
    
   8(d).  Letter Agreement between the Registrant and State Street Bank and
          Trust Company relating to the applicability of the Custodian Agreement
          to Loomis Sayles Intermediate Maturity Bond Fund, Loomis Sayles
          Investment Grade Bond Fund, Loomis Sayles Mid-Cap Growth Fund, Loomis
          Sayles Mid-Cap Value Fund, Loomis Sayles Small Cap Growth Fund and
          Loomis Sayles Strategic Value Fund.     
    
   8(e).  Form of Letter Agreement between the Registrant and State Street Bank
          and Trust Company relating to the applicability of the Custodian
          Agreement to Loomis Sayles Worldwide Fund.     
    
   9(b).  Letter Agreement between the Registrant and State Street Bank and
          Trust Company relating to the applicability of the Transfer Agency and
          Service Agreement to Loomis Sayles Short-Term Bond Fund.     
    
   9(c).  Letter Agreement between the Registrant and State Street Bank and
          Trust Company relating to the applicability of the Transfer Agency and
          Service Agreement to Loomis Sayles High Yield Fund and Loomis Sayles
          Worldwide Fund.     
    
   9(d).  Letter Agreement between the Registrant and State Street Bank and
          Trust Company relating to the applicability of the Transfer Agency and
          Service Agreement to Loomis Sayles Intermediate Maturity Bond Fund,
          Loomis Sayles Investment Grade Bond Fund, Loomis Sayles Mid-Cap Growth
          Fund, Loomis Sayles Mid-Cap Value Fund, Loomis Sayles Small Cap Growth
          Fund and Loomis Sayles Strategic Value Fund.     

   11.    Consent of Coopers & Lybrand L.L.P.

   17(a). Financial Data Schedule for Institutional Class shares of Loomis
          Sayles Growth Fund.

   17(b). Financial Data Schedule for Institutional Class shares of Loomis
          Sayles Core Value Fund.
<PAGE>
 
   17(c). Financial Data Schedule for Institutional Class shares of Loomis
          Sayles Small Cap Value Fund.

   17(d). Financial Data Schedule for Institutional Class shares of Loomis
          Sayles International Equity Fund.

   17(e). Financial Data Schedule for Institutional Class shares of Loomis
          Sayles Worldwide Fund.

   17(f). Financial Data Schedule for Institutional Class shares of Loomis
          Sayles Bond Fund.

   17(g). Financial Data Schedule for Institutional Class shares of Loomis
          Sayles Global Bond Fund.

   17(h). Financial Data Schedule for Institutional Class shares of Loomis
          Sayles U.S. Government Securities Fund.

   17(i). Financial Data Schedule for Institutional Class shares of Loomis
          Sayles Municipal Bond Fund.

   17(j). Financial Data Schedule for Institutional Class shares of Loomis
          Sayles Short-Term Bond Fund.

    
   17(k). Financial Data Schedule for Institutional Class shares of Loomis
          Sayles High Yield Fund.     

<PAGE>
 
Loomis Sayles Funds
One Financial Center, Boston, Mass. 02111 (617) 482-2450 Fax (617) 338-0761


July 27, 1992



State Street Bank and Trust Company
1776 Heritage Drive
North Quincy, MA 02171

Gentlemen:

     This is to advise you that Loomis Sayles Funds (the "Fund") has established
a new series of shares to be known as the Loomis Sayles Short-Term Bond Fund.
In accordance with the Additional Funds provision in paragraph 17 of the
Custodian Contract dated April 23, 1991 and in Article 8 of the Transfer Agency
and Service Agreement dated April 23, 1991 between the Fund and State Street
Bank and Trust Company, the Fund hereby requests that you act as Custodian and
Transfer Agent for the new series under the terms of the respective contracts.

     Please indicate your acceptance of the foregoing by executing two copies of
this Letter Agreement, returning one copy to the Fund and retaining one copy for
your records.


LOOMIS SAYLES SHORT-TERM BOND FUND
 
By:  /s/ Charles J. Finlayson
   ----------------------------------
     Charles J. Finlayson, President

Agreed to this 31st day of July, 1992

STATE STREET BANK AND TRUST COMPANY

By:  /s/ Theresa McGuire
   ----------------------------------
     Vice President

<PAGE>
 
Loomis Sayles Funds
One Financial Center, Boston, Mass. 02111 (617) 482-2450 Fax (617) 338-0761


August 28, 1996



State Street Bank and Trust Company
1776 Heritage Drive
North Quincy, MA 02171

Gentlemen:

This is to advise you that Loomis Sayles Funds (the "Trust") has established a
new fund to be known as the Loomis Sayles High Yield Fund.  In accordance with
the Additional Funds provisions in Article 17 of the Custodian Contract dated
April 23, 1991 between the Trust and State Street Bank and Trust Company, the
Trust hereby requests that you act as custodian for the new fund under the terms
of the contract.

Please indicate your acceptance of the foregoing by executing two copies of this
Letter Agreement, returning one copy to the Trust and retaining one copy for
your records.



By   /s/ Timothy Panaro
  ------------------------------------
Agreed to this 23rd day of August 1996
State Street Bank and Trust Company



By     /s/ Daniel J. Fuss
  ------------------------------------
           President of the Trust

<PAGE>
 
Loomis Sayles Funds
One Financial Center, Boston, Mass. 02111 (617) 482-2450 Fax (617) 338-0761


December 31, 1996



State Street Bank and Trust Company
1776 Heritage Drive
North Quincy, MA 02171

Gentlemen:

This is to advise you that Loomis Sayles Funds (the "Trust") has established six
new funds to be known as the Loomis Sayles Mid-Cap Growth Fund, Loomis Sayles
Mid-Cap Value Fund, Loomis Sayles Small Cap Growth Fund, Loomis Sayles Strategic
Value Fund, Loomis Sayles Intermediate Maturity Bond Fund and Loomis Sayles
Investment Grade Bond Fund.  In accordance with the Additional Funds provisions
in paragraph 17 of the Custodian Contract and in Article 8 of the Transfer
Agency and Service Agreement between the Trust and State Street Bank and Trust
Company, the Trust hereby requests that you act as custodian and transfer agent
for the new funds under the terms of the contracts.

Please indicate your acceptance of the foregoing by executing two copies of this
Letter Agreement, returning one copy to the Trust and retaining one copy for
your records.



By        /s/ Timothy Panaro
  ------------------------------------------
Agreed to this 31st day of December 31, 1996
State Street Bank and Trust Company



By       /s/ Daniel J. Fuss
  ------------------------------------------
             President of the Trust

<PAGE>
 
Loomis Sayles Funds
One Financial Center, Boston, Mass. 02111 (617) 482-2450 Fax (617) 338-0761


February 24, 1997



State Street Bank and Trust Company
1776 Heritage Drive
North Quincy, MA 02171

Gentlemen:

As you know, Loomis Sayles Funds (the "Trust") established a new fund to be
known as the Loomis Sayles Worldwide Fund which commenced operations on May 1,
1996.  The Trust hereby ratifies your acting, and requests that you continue to
act, as custodian for the Loomis Sayles Worldwide Fund in accordance with the
Additional Funds provisions in Article 17 of the Custodian Contract dated April
23, 1991 between the Trust and State Street Bank and Trust Company.

Please indicate your acceptance of the foregoing by executing two copies of this
Letter Agreement, returning one copy to the Trust and retaining one copy for
your records.



By
  --------------------------------------
Agreed to this     day of           1997
               ---        ---------
State Street Bank and Trust Company



By
  --------------------------------------
           President of the Trust

<PAGE>
 
Loomis Sayles Funds
One Financial Center, Boston, Mass. 02111 (617) 482-2450 Fax (617) 338-0761


July 27, 1992



State Street Bank and Trust Company
1776 Heritage Drive
North Quincy, MA 02171

Gentlemen:

     This is to advise you that Loomis Sayles Funds (the "Fund") has established
a new series of shares to be known as the Loomis Sayles Short-Term Bond Fund.
In accordance with the Additional Funds provision in paragraph 17 of the
Custodian Contract dated April 23, 1991 and in Article 8 of the Transfer Agency
and Service Agreement dated April 23, 1991 between the Fund and State Street
Bank and Trust Company, the Fund hereby requests that you act as Custodian and
Transfer Agent for the new series under the terms of the respective contracts.

     Please indicate your acceptance of the foregoing by executing two copies of
this Letter Agreement, returning one copy to the Fund and retaining one copy for
your records.


LOOMIS SAYLES SHORT-TERM BOND FUND


By:  /s/ Charles J. Finlayson
   ----------------------------------
     Charles J. Finlayson, President


Agreed to this 31st day of July, 1992

STATE STREET BANK AND TRUST COMPANY

By:  /s/ Theresa McGuire
   ----------------------------------
     Vice President

<PAGE>
 
Loomis Sayles Funds
One Financial Center, Boston, Mass. 02111 (617) 482-2450 Fax (617) 338-0761


August 28, 1996



State Street Bank and Trust Company
1776 Heritage Drive
North Quincy, MA 02171

Gentlemen:

This is to advise you that Loomis Sayles Funds (the "Trust") has established a
new fund to be known as the Loomis Sayles High Yield Fund.  In accordance with
the Additional Funds provisions in Article 8 of the Transfer Agency and Service
Agreement between the Trust and State Street Bank and Trust Company, the Trust
hereby requests that you act as transfer agent for the new fund under the terms
of the contract.

In addition, the Trust hereby ratifies your acting, and requests that you
continue to act, as transfer agent to the Loomis Sayles Worldwide Fund which
commenced operations on May 1, 1996.

Please indicate your acceptance of the foregoing by executing two copies of this
Letter Agreement, returning one copy to the Trust and retaining one copy for
your records.



By       /s/ Ronald Logue
  ---------------------------------------
Agreed to this 16th day of September 1996
State Street Bank and Trust Company



By       /s/ Daniel J. Fuss
  ---------------------------------------
         President of the Trust


<PAGE>
 
Loomis Sayles Funds
One Financial Center, Boston, Mass. 02111 (617) 482-2450 Fax (617) 338-0761


December 31, 1996



State Street Bank and Trust Company
1776 Heritage Drive
North Quincy, MA 02171

Gentlemen:

This is to advise you that Loomis Sayles Funds (the "Trust") has established six
new funds to be known as the Loomis Sayles Mid-Cap Growth Fund, Loomis Sayles
Mid-Cap Value Fund, Loomis Sayles Small Cap Growth Fund, Loomis Sayles Strategic
Value Fund, Loomis Sayles Intermediate Maturity Bond Fund and Loomis Sayles
Investment Grade Bond Fund.  In accordance with the Additional Funds provisions
in paragraph 17 of the Custodian Contract and in Article 8 of the Transfer
Agency and Service Agreement between the Trust and State Street Bank and Trust
Company, the Trust hereby requests that you act as custodian and transfer agent
for the new funds under the terms of the contracts.

Please indicate your acceptance of the foregoing by executing two copies of this
Letter Agreement, returning one copy to the Trust and retaining one copy for
your records.



By        /s/ Timothy Panaro
  ------------------------------------------
Agreed to this 31st day of December 31, 1996
State Street Bank and Trust Company



By        /s/ Daniel J. Fuss
  ------------------------------------------
              President of the Trust

<PAGE>
 
CONSENT OF INDEPENDENT ACCOUNTANTS


To the Trustees of Loomis Sayles Funds:

We consent to the inclusion in Post-Effective Amendment No. 12 to the 
Registration Statement of Loomis Sayles Funds (consisting of Loomis Sayles 
Growth Fund, Loomis Sayles Core Value Fund (formerly Loomis Sayles Growth & 
Income Fund), Loomis Sayles Small Cap Value Fund (formerly Loomis Sayles Small 
Cap Fund), Loomis Sayles International Equity Fund, Loomis Sayles Worldwide 
Fund, Loomis Sayles Bond Fund, Loomis Sayles Global Bond Fund, Loomis Sayles 
U.S. Government Securities Fund, Loomis Sayles Municipal Bond Fund, Loomis 
Sayles Short-Term Bond Fund, and Loomis Sayles High Yield Fund (collectively, 
the "Funds)) on Form N-1A of our report dated February 21, 1997 on our audit of 
the financial statements and financial highlights of the respective Funds, which
report is included in the Annual Report to Shareholders for the year ended 
December 31, 1996, which is included in the Registration Statement.  We also 
consent to the reference to our Firm under the captions "Financial Highlights," 
"Independent Accountants" and "Experts".



                                            /s/ Coopers & Lybrand L.L.P.

Boston, Massachusetts                       COOPERS & LYBRAND L.L.P.
March 7, 1997


<TABLE> <S> <C>

<PAGE>
 
<ARTICLE> 6
<SERIES>
  <NUMBER> 1
  <NAME> LS-GROWTH  
       
<S>                            <C>
<PERIOD-TYPE>                   12-MOS
<FISCAL-YEAR-END>                          DEC-31-1996
<PERIOD-END>                               DEC-31-1996
<INVESTMENTS-AT-COST>                       31,305,044
<INVESTMENTS-AT-VALUE>                      38,131,282
<RECEIVABLES>                                2,068,323
<ASSETS-OTHER>                                  15,078
<OTHER-ITEMS-ASSETS>                                 0
<TOTAL-ASSETS>                              40,214,683
<PAYABLE-FOR-SECURITIES>                       233,316
<SENIOR-LONG-TERM-DEBT>                         16,550
<OTHER-ITEMS-LIABILITIES>                      467,906
<TOTAL-LIABILITIES>                            717,772
<SENIOR-EQUITY>                              7,947,256
<PAID-IN-CAPITAL-COMMON>                    31,549,655
<SHARES-COMMON-STOCK>                        2,938,173
<SHARES-COMMON-PRIOR>                        2,948,623
<ACCUMULATED-NII-CURRENT>                       26,688
<OVERDISTRIBUTION-NII>                          11,723
<ACCUMULATED-NET-GAINS>                      1,109,295
<OVERDISTRIBUTION-GAINS>                             0 
<ACCUM-APPREC-OR-DEPREC>                     6,826,238
<NET-ASSETS>                                39,496,911
<DIVIDEND-INCOME>                              245,915
<INTEREST-INCOME>                               20,973
<OTHER-INCOME>                                       0
<EXPENSES-NET>                                 467,595
<NET-INVESTMENT-INCOME>                      (200,707)
<REALIZED-GAINS-CURRENT>                    10,636,248
<APPREC-INCREASE-CURRENT>                  (2,736,567)
<NET-CHANGE-FROM-OPS>                        7,698,974
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                   10,947,610
<DISTRIBUTIONS-OF-GAINS>                             0
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                        544,697
<NUMBER-OF-SHARES-REDEEMED>                (1,336,333)
<SHARES-REINVESTED>                            781,186
<NET-CHANGE-IN-ASSETS>                        (10,450)
<ACCUMULATED-NII-PRIOR>                        334,307
<ACCUMULATED-GAINS-PRIOR>                    1,429,494
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                          318,602
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                467,595
<AVERAGE-NET-ASSETS>                                 0
<PER-SHARE-NAV-BEGIN>                            15.27
<PER-SHARE-NII>                                 (0.07)
<PER-SHARE-GAIN-APPREC>                           3.08
<PER-SHARE-DIVIDEND>                              0.00
<PER-SHARE-DISTRIBUTIONS>                       (4.84)
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                              13.44
<EXPENSE-RATIO>                                   1.10
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
        

</TABLE>

<TABLE> <S> <C>

<PAGE>
 
<ARTICLE> 6
<SERIES>
  <NUMBER> 2
  <NAME> LS-CORE VALUE 
       
<S>                            <C>
<PERIOD-TYPE>                    12-MOS
<FISCAL-YEAR-END>                          DEC-31-1996
<PERIOD-END>                               DEC-31-1996
<INVESTMENTS-AT-COST>                       34,995,285
<INVESTMENTS-AT-VALUE>                      43,583,221
<RECEIVABLES>                                  322,601
<ASSETS-OTHER>                                  82,775
<OTHER-ITEMS-ASSETS>                                 0
<TOTAL-ASSETS>                              43,988,597
<PAYABLE-FOR-SECURITIES>                       147,229
<SENIOR-LONG-TERM-DEBT>                         10,611
<OTHER-ITEMS-LIABILITIES>                      115,302
<TOTAL-LIABILITIES>                            273,142
<SENIOR-EQUITY>                              9,583,638
<PAID-IN-CAPITAL-COMMON>                    34,131,817
<SHARES-COMMON-STOCK>                        2,801,661
<SHARES-COMMON-PRIOR>                        2,502,983
<ACCUMULATED-NII-CURRENT>                    1,016,750
<OVERDISTRIBUTION-NII>                          17,869
<ACCUMULATED-NET-GAINS>                        977,833
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                     8,587,936
<NET-ASSETS>                                43,715,455
<DIVIDEND-INCOME>                              941,314
<INTEREST-INCOME>                               75,436
<OTHER-INCOME>                                       0
<EXPENSES-NET>                                 447,683
<NET-INVESTMENT-INCOME>                        569,067
<REALIZED-GAINS-CURRENT>                     4,564,278
<APPREC-INCREASE-CURRENT>                    2,599,063
<NET-CHANGE-FROM-OPS>                        7,732,408
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                      559,278
<DISTRIBUTIONS-OF-GAINS>                     4,547,630
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                        529,829
<NUMBER-OF-SHARES-REDEEMED>                  (548,491)
<SHARES-REINVESTED>                            317,340
<NET-CHANGE-IN-ASSETS>                         298,678
<ACCUMULATED-NII-PRIOR>                        909,889
<ACCUMULATED-GAINS-PRIOR>                      961,185
<OVERDISTRIB-NII-PRIOR>                          8,080
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                          297,001
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                447,683
<AVERAGE-NET-ASSETS>                                 0
<PER-SHARE-NAV-BEGIN>                            14.57
<PER-SHARE-NII>                                   0.22
<PER-SHARE-GAIN-APPREC>                           2.83
<PER-SHARE-DIVIDEND>                            (0.22)
<PER-SHARE-DISTRIBUTIONS>                       (1.80)
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                              15.60
<EXPENSE-RATIO>                                   1.13
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
        

</TABLE>

<TABLE> <S> <C>

<PAGE>
 
<ARTICLE> 6
<SERIES>
  <NUMBER> 3
  <NAME> LS-SMALL CAP 
       
<S>                           <C>
<PERIOD-TYPE>                   12-MOS
<FISCAL-YEAR-END>                          DEC-31-1996
<PERIOD-END>                               DEC-31-1996
<INVESTMENTS-AT-COST>                      139,966,166
<INVESTMENTS-AT-VALUE>                     162,417,167
<RECEIVABLES>                                2,258,582
<ASSETS-OTHER>                                  21,194
<OTHER-ITEMS-ASSETS>                                 0
<TOTAL-ASSETS>                             164,696,943
<PAYABLE-FOR-SECURITIES>                        92,411
<SENIOR-LONG-TERM-DEBT>                        362,584
<OTHER-ITEMS-LIABILITIES>                      617,080
<TOTAL-LIABILITIES>                          1,072,076
<SENIOR-EQUITY>                             24,595,423
<PAID-IN-CAPITAL-COMMON>                   139,029,445
<SHARES-COMMON-STOCK>                        9,406,474
<SHARES-COMMON-PRIOR>                        5,901,613
<ACCUMULATED-NII-CURRENT>                    2,238,976
<OVERDISTRIBUTION-NII>                          67,474
<ACCUMULATED-NET-GAINS>                      2,076,948
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                    22,451,001
<NET-ASSETS>                               163,624,868
<DIVIDEND-INCOME>                            1,548,672
<INTEREST-INCOME>                              690,304
<OTHER-INCOME>                                       0
<EXPENSES-NET>                               1,339,926
<NET-INVESTMENT-INCOME>                        899,050
<REALIZED-GAINS-CURRENT>                    17,761,764
<APPREC-INCREASE-CURRENT>                   12,441,612
<NET-CHANGE-FROM-OPS>                       31,102,426
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                      847,132
<DISTRIBUTIONS-OF-GAINS>                    18,432,872
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                      4,541,136
<NUMBER-OF-SHARES-REDEEMED>                (2,093,985)
<SHARES-REINVESTED>                          1,057,710
<NET-CHANGE-IN-ASSETS>                       3,504,861
<ACCUMULATED-NII-PRIOR>                      1,290,021
<ACCUMULATED-GAINS-PRIOR>                    2,739,056
<OVERDISTRIB-NII-PRIOR>                         15,556
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                        1,125,160
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                              1,339,926
<AVERAGE-NET-ASSETS>                                 0
<PER-SHARE-NAV-BEGIN>                            15.33
<PER-SHARE-NII>                                   0.11
<PER-SHARE-GAIN-APPREC>                           4.47
<PER-SHARE-DIVIDEND>                            (0.11)
<PER-SHARE-DISTRIBUTIONS>                       (2.41)
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                              17.39
<EXPENSE-RATIO>                                   1.19
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
        

</TABLE>

<TABLE> <S> <C>

<PAGE>
 
<ARTICLE> 6
<SERIES>
  <NUMBER> 4
  <NAME> LS-INTERNATIONAL EQUITY 
       
<S>                           <C>
<PERIOD-TYPE>                   12-MOS
<FISCAL-YEAR-END>                          DEC-31-1996
<PERIOD-END>                               DEC-31-1996
<INVESTMENTS-AT-COST>                       80,946,976
<INVESTMENTS-AT-VALUE>                      91,043,224
<RECEIVABLES>                                   64,824
<ASSETS-OTHER>                                 242,191
<OTHER-ITEMS-ASSETS>                                 0
<TOTAL-ASSETS>                              91,350,239
<PAYABLE-FOR-SECURITIES>                       124,297
<SENIOR-LONG-TERM-DEBT>                         12,531
<OTHER-ITEMS-LIABILITIES>                      550,976
<TOTAL-LIABILITIES>                            687,804
<SENIOR-EQUITY>                             11,448,318
<PAID-IN-CAPITAL-COMMON>                    79,214,117
<SHARES-COMMON-STOCK>                        6,890,021
<SHARES-COMMON-PRIOR>                        6,825,853
<ACCUMULATED-NII-CURRENT>                      682,558
<OVERDISTRIBUTION-NII>                          25,444
<ACCUMULATED-NET-GAINS>                      1,326,961
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                    10,095,913
<NET-ASSETS>                                90,662,435
<DIVIDEND-INCOME>                            1,882,896
<INTEREST-INCOME>                              133,314
<OTHER-INCOME>                                       0
<EXPENSES-NET>                               1,199,907
<NET-INVESTMENT-INCOME>                        816,303
<REALIZED-GAINS-CURRENT>                     5,009,564
<APPREC-INCREASE-CURRENT>                    8,432,203
<NET-CHANGE-FROM-OPS>                       14,258,060
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                      566,307
<DISTRIBUTIONS-OF-GAINS>                     3,500,683
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                        960,299
<NUMBER-OF-SHARES-REDEEMED>                (1,149,339)
<SHARES-REINVESTED>                            253,208
<NET-CHANGE-IN-ASSETS>                          64,168
<ACCUMULATED-NII-PRIOR>                      2,042,758
<ACCUMULATED-GAINS-PRIOR>                    (396,600)
<OVERDISTRIB-NII-PRIOR>                         26,969
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                          848,205
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                              1,199,907
<AVERAGE-NET-ASSETS>                                 0
<PER-SHARE-NAV-BEGIN>                            11.65
<PER-SHARE-NII>                                   0.12
<PER-SHARE-GAIN-APPREC>                           2.01
<PER-SHARE-DIVIDEND>                            (0.09)
<PER-SHARE-DISTRIBUTIONS>                       (0.53)
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                              13.16
<EXPENSE-RATIO>                                   1.42
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
        

</TABLE>

<TABLE> <S> <C>

<PAGE>
 
<ARTICLE> 6
<SERIES>
  <NUMBER> 5
  <NAME> LS-WORLDWIDE 
       
<S>                           <C>
<PERIOD-TYPE>                   12-MOS
<FISCAL-YEAR-END>                          DEC-31-1996
<PERIOD-END>                               DEC-31-1996
<INVESTMENTS-AT-COST>                        4,881,364
<INVESTMENTS-AT-VALUE>                       5,174,075
<RECEIVABLES>                                   61,128
<ASSETS-OTHER>                                  43,363
<OTHER-ITEMS-ASSETS>                                 0
<TOTAL-ASSETS>                               5,278,566
<PAYABLE-FOR-SECURITIES>                        50,834
<SENIOR-LONG-TERM-DEBT>                              0        
<OTHER-ITEMS-LIABILITIES>                       38,239
<TOTAL-LIABILITIES>                             89,073
<SENIOR-EQUITY>                                 48,249
<PAID-IN-CAPITAL-COMMON>                     4,894,786
<SHARES-COMMON-STOCK>                        3,982,994
<SHARES-COMMON-PRIOR>                                0
<ACCUMULATED-NII-CURRENT>                      174,837
<OVERDISTRIBUTION-NII>                          12,271
<ACCUMULATED-NET-GAINS>                       (10,115)
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                       292,551
<NET-ASSETS>                                 5,189,493
<DIVIDEND-INCOME>                               36,623
<INTEREST-INCOME>                              138,214
<OTHER-INCOME>                                       0
<EXPENSES-NET>                                  31,113
<NET-INVESTMENT-INCOME>                        143,724
<REALIZED-GAINS-CURRENT>                       (6,728)
<APPREC-INCREASE-CURRENT>                      292,651
<NET-CHANGE-FROM-OPS>                          429,547
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                    (140,138)
<DISTRIBUTIONS-OF-GAINS>                             0
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                        475,045
<NUMBER-OF-SHARES-REDEEMED>                     13,134
<SHARES-REINVESTED>                                  0
<NET-CHANGE-IN-ASSETS>                         488,179
<ACCUMULATED-NII-PRIOR>                              0
<ACCUMULATED-GAINS-PRIOR>                            0
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                           23,335
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                 31,113
<AVERAGE-NET-ASSETS>                                 0
<PER-SHARE-NAV-BEGIN>                            10.00
<PER-SHARE-NII>                                   0.30
<PER-SHARE-GAIN-APPREC>                           0.63
<PER-SHARE-DIVIDEND>                            (0.30)
<PER-SHARE-DISTRIBUTIONS>                            0
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                              10.63
<EXPENSE-RATIO>                                   1.00
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
        

</TABLE>

<TABLE> <S> <C>

<PAGE>
 
<ARTICLE> 6
<SERIES>
  <NUMBER> 6
  <NAME> LS-BOND
       
<S>                          <C>
<PERIOD-TYPE>                   12-MOS
<FISCAL-YEAR-END>                          DEC-31-1996
<PERIOD-END>                               DEC-31-1996
<INVESTMENTS-AT-COST>                      511,513,540
<INVESTMENTS-AT-VALUE>                     530,384,859
<RECEIVABLES>                               16,465,343
<ASSETS-OTHER>                                  16,414
<OTHER-ITEMS-ASSETS>                                 0
<TOTAL-ASSETS>                             546,866,616
<PAYABLE-FOR-SECURITIES>                     2,003,221
<SENIOR-LONG-TERM-DEBT>                      1,512,794
<OTHER-ITEMS-LIABILITIES>                    2,106,788
<TOTAL-LIABILITIES>                          5,622,803
<SENIOR-EQUITY>                             20,361,748
<PAID-IN-CAPITAL-COMMON>                   520,882,065
<SHARES-COMMON-STOCK>                       43,707,558
<SHARES-COMMON-PRIOR>                       27,718,757
<ACCUMULATED-NII-CURRENT>                   31,843,621
<OVERDISTRIBUTION-NII>                         537,972
<ACCUMULATED-NET-GAINS>                        961,804
<OVERDISTRIBUTION-GAINS>                             0    
<ACCUM-APPREC-OR-DEPREC>                    18,861,972
<NET-ASSETS>                               541,243,813
<DIVIDEND-INCOME>                            1,316,555
<INTEREST-INCOME>                           30,527,066
<OTHER-INCOME>                                       0
<EXPENSES-NET>                               2,739,460
<NET-INVESTMENT-INCOME>                     29,104,161
<REALIZED-GAINS-CURRENT>                     9,930,396
<APPREC-INCREASE-CURRENT>                    1,537,274
<NET-CHANGE-FROM-OPS>                       40,571,831
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                   28,834,672
<DISTRIBUTIONS-OF-GAINS>                             0
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                     30,770,089
<NUMBER-OF-SHARES-REDEEMED>                (10,467,220)
<SHARES-REINVESTED>                          2,592,881
<NET-CHANGE-IN-ASSETS>                      22,895,750
<ACCUMULATED-NII-PRIOR>                      4,853,703
<ACCUMULATED-GAINS-PRIOR>                    1,717,061
<OVERDISTRIB-NII-PRIOR>                        (20,693)
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                        2,205,461
<INTEREST-EXPENSE>                                   0         
<GROSS-EXPENSE>                              2,739,460
<AVERAGE-NET-ASSETS>                                 0
<PER-SHARE-NAV-BEGIN>                            12.29
<PER-SHARE-NII>                                   0.86
<PER-SHARE-GAIN-APPREC>                           0.35
<PER-SHARE-DIVIDEND>                             (0.86)
<PER-SHARE-DISTRIBUTIONS>                        (0.26)
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                              12.38
<EXPENSE-RATIO>                                   0.75
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
        

</TABLE>

<TABLE> <S> <C>

<PAGE>
 
<ARTICLE> 6
<SERIES>
  <NUMBER> 7
  <NAME> LS-GLOBAL BOND 
       
<S>                           <C>
<PERIOD-TYPE>                   12-MOS
<FISCAL-YEAR-END>                          DEC-31-1996
<PERIOD-END>                               DEC-31-1996
<INVESTMENTS-AT-COST>                       25,788,678
<INVESTMENTS-AT-VALUE>                      26,749,790
<RECEIVABLES>                                  702,317
<ASSETS-OTHER>                                       0
<OTHER-ITEMS-ASSETS>                            12,402
<TOTAL-ASSETS>                              27,464,509
<PAYABLE-FOR-SECURITIES>                             0
<SENIOR-LONG-TERM-DEBT>                         49,944
<OTHER-ITEMS-LIABILITIES>                      901,693
<TOTAL-LIABILITIES>                            951,637
<SENIOR-EQUITY>                                248,167
<PAID-IN-CAPITAL-COMMON>                    26,264,705
<SHARES-COMMON-STOCK>                        2,147,126
<SHARES-COMMON-PRIOR>                          904,452
<ACCUMULATED-NII-CURRENT>                    1,255,228
<OVERDISTRIBUTION-NII>                        (34,950)
<ACCUMULATED-NET-GAINS>                      (670,657)
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                       953,774
<NET-ASSETS>                                26,512,872
<DIVIDEND-INCOME>                                    0
<INTEREST-INCOME>                            1,255,228
<OTHER-INCOME>                                       0
<EXPENSES-NET>                                 239,296
<NET-INVESTMENT-INCOME>                      1,015,932
<REALIZED-GAINS-CURRENT>                       848,733
<APPREC-INCREASE-CURRENT>                      503,763
<NET-CHANGE-FROM-OPS>                        2,368,428
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                    1,502,252
<DISTRIBUTIONS-OF-GAINS>                             0
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                      1,525,167
<NUMBER-OF-SHARES-REDEEMED>                  (375,310)
<SHARES-REINVESTED>                             92,817
<NET-CHANGE-IN-ASSETS>                       1,242,674
<ACCUMULATED-NII-PRIOR>                      1,159,861
<ACCUMULATED-GAINS-PRIOR>                    (258,607)
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                          119,648
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                239,296
<AVERAGE-NET-ASSETS>                                 0
<PER-SHARE-NAV-BEGIN>                            11.39
<PER-SHARE-NII>                                   0.44
<PER-SHARE-GAIN-APPREC>                           1.27
<PER-SHARE-DIVIDEND>                            (0.75)
<PER-SHARE-DISTRIBUTIONS>                         0.00
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                              12.35
<EXPENSE-RATIO>                                   1.50
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
        

</TABLE>

<TABLE> <S> <C>

<PAGE>
 
<ARTICLE> 6
<SERIES> 
  <NUMBER> 8
  <NAME> LS-U.S. GOVERNMENT SECURITIES 
       
<S>                           <C>
<PERIOD-TYPE>                   12-MOS
<FISCAL-YEAR-END>                          DEC-31-1996
<PERIOD-END>                               DEC-31-1996
<INVESTMENTS-AT-COST>                       13,891,830
<INVESTMENTS-AT-VALUE>                      14,090,058
<RECEIVABLES>                                  127,223
<ASSETS-OTHER>                                  27,219
<OTHER-ITEMS-ASSETS>                                 0 
<TOTAL-ASSETS>                              14,244,500
<PAYABLE-FOR-SECURITIES>                             0
<SENIOR-LONG-TERM-DEBT>                          2,302
<OTHER-ITEMS-LIABILITIES>                       50,081
<TOTAL-LIABILITIES>                             52,383
<SENIOR-EQUITY>                            (1,100,855)
<PAID-IN-CAPITAL-COMMON>                    15,292,972
<SHARES-COMMON-STOCK>                        1,407,580
<SHARES-COMMON-PRIOR>                        1,832,320
<ACCUMULATED-NII-CURRENT>                    1,568,353
<OVERDISTRIBUTION-NII>                         (4,942)
<ACCUMULATED-NET-GAINS>                    (1,294,141)
<OVERDISTRIBUTION-GAINS>                             0 
<ACCUM-APPREC-OR-DEPREC>                       198,228
<NET-ASSETS>                                14,192,117
<DIVIDEND-INCOME>                                    0
<INTEREST-INCOME>                            1,568,353
<OTHER-INCOME>                                       0
<EXPENSES-NET>                                 216,982
<NET-INVESTMENT-INCOME>                      1,351,371
<REALIZED-GAINS-CURRENT>                     (716,728)
<APPREC-INCREASE-CURRENT>                    (437,793)
<NET-CHANGE-FROM-OPS>                          196,850
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                  (1,334,711)
<DISTRIBUTIONS-OF-GAINS>                             0
<DISTRIBUTIONS-OTHER>                                0 
<NUMBER-OF-SHARES-SOLD>                        864,647
<NUMBER-OF-SHARES-REDEEMED>                (1,418,646)
<SHARES-REINVESTED>                            129,259
<NET-CHANGE-IN-ASSETS>                       (424,740)
<ACCUMULATED-NII-PRIOR>                      1,339,980
<ACCUMULATED-GAINS-PRIOR>                    (608,340)
<OVERDISTRIB-NII-PRIOR>                          6,532
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                          130,189
<INTEREST-EXPENSE>                                   0 
<GROSS-EXPENSE>                                216,982
<AVERAGE-NET-ASSETS>                                 0 
<PER-SHARE-NAV-BEGIN>                            10.64
<PER-SHARE-NII>                                   0.68
<PER-SHARE-GAIN-APPREC>                         (0.57)
<PER-SHARE-DIVIDEND>                            (0.67)
<PER-SHARE-DISTRIBUTIONS>                         0.00
<RETURNS-OF-CAPITAL>                                 0 
<PER-SHARE-NAV-END>                              10.08
<EXPENSE-RATIO>                                   1.00
<AVG-DEBT-OUTSTANDING>                               0 
<AVG-DEBT-PER-SHARE>                                 0 
        

</TABLE>

<TABLE> <S> <C>

<PAGE>
 
<ARTICLE> 6
<SERIES>
  <NUMBER> 9
  <NAME> LS-MUNICIPAL BOND
       
<S>                          <C>
<PERIOD-TYPE>                   12-MOS
<FISCAL-YEAR-END>                          DEC-31-1996
<PERIOD-END>                               DEC-31-1996
<INVESTMENTS-AT-COST>                        8,350,313
<INVESTMENTS-AT-VALUE>                       8,594,145
<RECEIVABLES>                                  142,305
<ASSETS-OTHER>                                  10,231
<OTHER-ITEMS-ASSETS>                                 0
<TOTAL-ASSETS>                               8,746,681
<PAYABLE-FOR-SECURITIES>                             0
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                       45,533
<TOTAL-LIABILITIES>                             45,533
<SENIOR-EQUITY>                                270,194
<PAID-IN-CAPITAL-COMMON>                     8,430,954
<SHARES-COMMON-STOCK>                          770,833
<SHARES-COMMON-PRIOR>                          690,228
<ACCUMULATED-NII-CURRENT>                      453,700
<OVERDISTRIBUTION-NII>                           3,777
<ACCUMULATED-NET-GAINS>                         22,585
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                       243,832
<NET-ASSETS>                                 8,701,148
<DIVIDEND-INCOME>                                    0
<INTEREST-INCOME>                              453,700
<OTHER-INCOME>                                       0
<EXPENSES-NET>                                  80,863
<NET-INVESTMENT-INCOME>                        372,837
<REALIZED-GAINS-CURRENT>                        54,589
<APPREC-INCREASE-CURRENT>                    (147,252)
<NET-CHANGE-FROM-OPS>                          280,174
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                    (372,889)
<DISTRIBUTIONS-OF-GAINS>                      (65,728)
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                        130,141
<NUMBER-OF-SHARES-REDEEMED>                   (77,656)
<SHARES-REINVESTED>                             28,120
<NET-CHANGE-IN-ASSETS>                          80,605
<ACCUMULATED-NII-PRIOR>                        437,660
<ACCUMULATED-GAINS-PRIOR>                       34,481
<OVERDISTRIB-NII-PRIOR>                          3,072
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                           48,518
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                 80,863
<AVERAGE-NET-ASSETS>                                 0
<PER-SHARE-NAV-BEGIN>                            11.53
<PER-SHARE-NII>                                   0.52
<PER-SHARE-GAIN-APPREC>                         (0.15)
<PER-SHARE-DIVIDEND>                            (0.52)
<PER-SHARE-DISTRIBUTIONS>                       (0.09)
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                              11.29
<EXPENSE-RATIO>                                   1.00
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
        

</TABLE>

<TABLE> <S> <C>

<PAGE>
 
<ARTICLE> 6
<SERIES>
  <NUMBER> 10
  <NAME> LS-SHORT-TERM BOND
       
<S>                           <C>
<PERIOD-TYPE>                   12-MOS
<FISCAL-YEAR-END>                          DEC-31-1996
<PERIOD-END>                               DEC-31-1996
<INVESTMENTS-AT-COST>                       17,871,580
<INVESTMENTS-AT-VALUE>                      17,946,185
<RECEIVABLES>                                  289,455
<ASSETS-OTHER>                                  43,460
<OTHER-ITEMS-ASSETS>                                 0
<TOTAL-ASSETS>                              18,279,100
<PAYABLE-FOR-SECURITIES>                             0
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                       50,433
<TOTAL-LIABILITIES>                             50,433
<SENIOR-EQUITY>                              (339,184)
<PAID-IN-CAPITAL-COMMON>                    18,567,851
<SHARES-COMMON-STOCK>                        1,879,790
<SHARES-COMMON-PRIOR>                        2,653,389
<ACCUMULATED-NII-CURRENT>                    1,346,804
<OVERDISTRIBUTION-NII>                          10,736
<ACCUMULATED-NET-GAINS>                      (424,525)
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                        74,605
<NET-ASSETS>                                18,228,667
<DIVIDEND-INCOME>                                    0
<INTEREST-INCOME>                            1,346,804
<OTHER-INCOME>                                       0
<EXPENSES-NET>                                 201,386
<NET-INVESTMENT-INCOME>                      1,145,418
<REALIZED-GAINS-CURRENT>                      (48,327)
<APPREC-INCREASE-CURRENT>                    (248,733)
<NET-CHANGE-FROM-OPS>                          848,358
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                  (1,145,361)
<DISTRIBUTIONS-OF-GAINS>                             0
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                      1,283,882
<NUMBER-OF-SHARES-REDEEMED>                (2,163,540)
<SHARES-REINVESTED>                            106,059
<NET-CHANGE-IN-ASSETS>                       (773,599)
<ACCUMULATED-NII-PRIOR>                      1,856,919
<ACCUMULATED-GAINS-PRIOR>                    (364,986)
<OVERDISTRIB-NII-PRIOR>                          (366)
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                          100,693
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                201,386
<AVERAGE-NET-ASSETS>                                 0
<PER-SHARE-NAV-BEGIN>                             9.81
<PER-SHARE-NII>                                   0.55
<PER-SHARE-GAIN-APPREC>                         (0.11)
<PER-SHARE-DIVIDEND>                                 0
<PER-SHARE-DISTRIBUTIONS>                       (0.55)
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                               9.70
<EXPENSE-RATIO>                                   1.00
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
        

</TABLE>

<TABLE> <S> <C>

<PAGE>
 
<ARTICLE> 6
<SERIES>
  <NUMBER> 11
  <NAME> LS-HIGH YIELD 
       
<S>                           <C>
<PERIOD-TYPE>                   12-MOS
<FISCAL-YEAR-END>                          DEC-31-1996
<PERIOD-END>                               DEC-31-1996
<INVESTMENTS-AT-COST>                        1,862,682
<INVESTMENTS-AT-VALUE>                       1,867,086
<RECEIVABLES>                                   69,799
<ASSETS-OTHER>                                  69,493
<OTHER-ITEMS-ASSETS>                                 0
<TOTAL-ASSETS>                               2,006,378
<PAYABLE-FOR-SECURITIES>                             0
<SENIOR-LONG-TERM-DEBT>                         31,939
<OTHER-ITEMS-LIABILITIES>                       35,549
<TOTAL-LIABILITIES>                             67,488
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                     1,925,543
<SHARES-COMMON-STOCK>                          191,794
<SHARES-COMMON-PRIOR>                                0
<ACCUMULATED-NII-CURRENT>                       40,700
<OVERDISTRIBUTION-NII>                           8,960
<ACCUMULATED-NET-GAINS>                              0
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                         4,387
<NET-ASSETS>                                 1,938,890
<DIVIDEND-INCOME>                                  178
<INTEREST-INCOME>                               40,522
<OTHER-INCOME>                                       0
<EXPENSES-NET>                                   3,180
<NET-INVESTMENT-INCOME>                         37,520
<REALIZED-GAINS-CURRENT>                          (36)
<APPREC-INCREASE-CURRENT>                        4,387
<NET-CHANGE-FROM-OPS>                           41,871
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                     (36,708)
<DISTRIBUTIONS-OF-GAINS>                             0
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                        189,979
<NUMBER-OF-SHARES-REDEEMED>                    (1,234)
<SHARES-REINVESTED>                              3,048
<NET-CHANGE-IN-ASSETS>                         191,793
<ACCUMULATED-NII-PRIOR>                              0
<ACCUMULATED-GAINS-PRIOR>                            0
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                            2,544
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                  3,180
<AVERAGE-NET-ASSETS>                                 0
<PER-SHARE-NAV-BEGIN>                            10.00
<PER-SHARE-NII>                                   0.20
<PER-SHARE-GAIN-APPREC>                           0.11
<PER-SHARE-DIVIDEND>                            (0.20)
<PER-SHARE-DISTRIBUTIONS>                            0
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                              10.11
<EXPENSE-RATIO>                                   0.75
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
        

</TABLE>


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