DOMINI INSTITUTIONAL TRUST
485APOS, 1997-09-29
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As filed with the Securities and Exchange Commission on September 29, 1997
Registration Nos. 33-14449 and 811-07599
                       

                     U.S. SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549
                                ----------------
                                   FORM N-1A

   
            REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933
                           POST-EFFECTIVE AMENDMENT NO. 1
                                      and

        REGISTRATION STATEMENT UNDER THE INVESTMENT COMPANY ACT OF 1940
                                 AMENDMENT NO. 4
      
                           DOMINI INSTITUTIONAL TRUST
               (Exact Name of Registrant as Specified in Charter)

                6 St. James Avenue, Boston, Massachusetts 02116
                    (Address of Principal Executive Offices)

              Registrant's Telephone Number, including Area Code:
                                 (617) 423-0800

                               Philip W. Coolidge
             6 St. James Avenue, Boston, Massachusetts 02116 
                    (Name and Address of Agent for Service)

                                    Copy to:

                              Roger P. Joseph, Esq.
        Bingham, Dana & Gould, LLP, 150 Federal Street, Boston, MA 02110
   
It is proposed that this filing will become effective (check appropriate box)

[ ] immediately upon filing pursuant to paragraph (b) 
[ ] on (date) pursuant to paragraph (b) 
[X] 60 days after filing pursuant to paragraph (a)(i) 
[ ] on (date) pursuant to paragraph (a)(i) 
[ ] 75 days after filing pursuant to paragraph (a)(ii) 
[ ] on (date) pursuant to paragraph (a)(ii) 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.

            
   
         Registrant  has  registered  an  indefinite  number  of its  shares  of
beneficial interest (par value $0.01 per share) pursuant to Rule 24f-2 under the
Investment  Company Act of 1940.  Registrant  filed the notice  required by Rule
24f-2 with respect to its series,  Domini  Institutional Social Equity Fund (for
its fiscal year ending July 31, 1997), on September 29, 1997.
    
Domini Social Index Portfolio has also executed this Registration Statement.

<PAGE>


                     DOMINI INSTITUTIONAL SOCIAL EQUITY FUND
                              CROSS REFERENCE SHEET
                            (As required by Rule 495)

<TABLE>
<CAPTION>
==========================================================================================================================
   
Item Number                                                                       Statement of Additional
Form N-1A, Part A                 Prospectus Caption                              Information Caption    
<S>                                <C>                                               <C>                                   
- --------------------------------------------------------------------------------------------------------------------------
1                                Front Cover Page                                                    *
- --------------------------------------------------------------------------------------------------------------------------
2                                Expense Summary                                                     *
- --------------------------------------------------------------------------------------------------------------------------
   
3                                Financial Highlights;                            Performance Information
                                 Performance Information    
- --------------------------------------------------------------------------------------------------------------------------
4                                Front Cover Page; Investment in the Fund;                           *
                                 Investment Objective and Policies
- --------------------------------------------------------------------------------------------------------------------------
   
5                                The Fund; Management -  Manager,                                    *
                                 Submanager, Sponsor; Transfer Agent
                                 and Custodian; Other Information
                                 Concerning Shares of the Fund-
                                 Expenses; Back Cover Page    
- --------------------------------------------------------------------------------------------------------------------------
5A                                Not Applicable                                                     *
- --------------------------------------------------------------------------------------------------------------------------
   
6                                Other Information Concerning                                        *
                                 Shares of the Fund-Description
                                 of Shares, Voting Rights and
                                 Liabilities; Management-Transfer
                                 Agent and Custodian; Other
                                 Information Concerning Shares
                                 of the Fund-Dividends and
                                 Capital Gains Distributions;
                                 Tax Matters    
- --------------------------------------------------------------------------------------------------------------------------
   
7                                Purchases and Redemptions of                                        *
                                 Shares-Purchases; Other
                                 Information Concerning Shares
                                 of the Fund-Net Asset Value,
                                 Management-Distributor; Transfer
                                 Agent and Custodian    
- --------------------------------------------------------------------------------------------------------------------------
   
8                                Purchases and Redemptions of                                        *
                                 Shares-Redemptions    
- --------------------------------------------------------------------------------------------------------------------------
9                                Not Applicable                                                      *
==========================================================================================================================



<PAGE>
==========================================================================================================================
Item Number                                                                       Statement of Additional
Form N-1A, Part B                Prospectus Caption                               Information Caption
- --------------------------------------------------------------------------------------------------------------------------
10                                                      *                         Front Cover Page
- --------------------------------------------------------------------------------------------------------------------------
11                                                      *                         Front Cover Page
- --------------------------------------------------------------------------------------------------------------------------
12                                                      *                         The Fund
- --------------------------------------------------------------------------------------------------------------------------
   
13                               Investment Objective and                         Investment  Objective,
                                 Policies                                         Policies and Restrictions
- --------------------------------------------------------------------------------------------------------------------------
14                                                      *                         Management of the Trust
                                                                                  and the
                                                                                  Portfolio-Trustees of the Trust and
                                                                                  the Portfolio, Officers
- --------------------------------------------------------------------------------------------------------------------------
15                                                      *                         Management of the Trust
                                                                                  and the
                                                                                  Portfolio-Trustees of the Trust and
                                                                                  the Portfolio, Officers
- --------------------------------------------------------------------------------------------------------------------------
16                               Other Information Concerning                                        *
                                 Shares of the Fund-Expenses
                                 Management of the Trust                          Management of the Trust and the
                                 and the Portfolio-Sponsor                        Portfolio-Manager and Submanager,
                                                                                  Sponsor

                                 Purchases and Redemptions of                     Management of the Trust
                                 Shares-Distribution                              and the
                                 Agreement                                        Portfolio-Distributor

                                 Management-Transfer                              Management of the Trust
                                 Agent and Custodian;                             and Portfolio;   
                                 Back Cover Page                                  Independent Auditors;
                                 Page                                             Back Cover Page    



                                                        *                         Management of the Trust
                                                                                  and the
                                                                                  Portfolio-Distributor
- --------------------------------------------------------------------------------------------------------------------------
   
17                                                      *                         Portfolio Transactions
                                                                                  and Brokerage Commissions
- --------------------------------------------------------------------------------------------------------------------------
18                               Other Information Concerning                     Description of Shares,
                                 Shares of the Fund-Description                   Voting Rights and
                                 of Shares, Voting Rights and                     Liabilities
                                 Liabilities

- --------------------------------------------------------------------------------------------------------------------------
19                               Purchases and Redemptions of                     Management of the Trust
                                 Shares; Other Information                        and the
                                 Concerning Shares of the                         Portfolio-Transfer Agent,
                                 Fund-Net Asset Value                             Custodian    
- --------------------------------------------------------------------------------------------------------------------------
20                               Tax Matters                                      Taxation
- --------------------------------------------------------------------------------------------------------------------------
21                                                      *                         Management of the Trust
                                                                                  and the
                                                                                  Portfolio-Distributor
- --------------------------------------------------------------------------------------------------------------------------
   
 22                              Performance Information                          Performance Information    
- --------------------------------------------------------------------------------------------------------------------------
23                                                      *                         Financial Statements
==========================================================================================================================
</TABLE>

Form N-1A, Part C

Information required to be included in Part C is set forth under the
appropriately numbered item in Part C of this registration statement.

<PAGE>
       
   
November  28, 1997    
DOMINI INSTITUTIONAL SOCIAL EQUITY FUND

   
         The investment objective of the Domini Institutional Social Equity Fund
(the "Fund") is to provide its  shareholders  with long-term  total return which
corresponds to the total return performance of the Domini 400 Social IndexSM, an
index comprised of stocks selected according to social criteria.  The Fund seeks
to achieve its investment objective by investing all of its investable assets in
the Domini Social Index  Portfolio  (the  "Portfolio"),  a diversified  open-end
management  investment company having the same investment objective as the Fund.
The  Portfolio  invests in the common  stocks  included in the Domini 400 Social
IndexSM.
    

     Table of Contents Page
   
Investment in the Fund
The Fund 
Expense Summary
Financial Highlights 
Performance Information 
Investment Objective and Policies 
Management 
Purchases and Redemptions of Shares 
Tax Matters 
Other Information Concerning Shares of the Fund 
    

       
     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 manager of the  Portfolio  is Domini  Social  Investments  LLC. The
investment submanager of the Portfolio is Mellon Equity Associates.  The sponsor
of the Fund is Domini Social  Investments LLC and the distributor of the Fund is
Signature  Broker-Dealer  Services,  Inc.  Investments  in the Fund are  neither
insured  nor  guaranteed  by the  U.S.  Government.  Shares  of the Fund are not
deposits or  obligations  of, or guaranteed by, any bank, and the shares are not
insured by the Federal Deposit Insurance Corporation or any other federal, state
or other governmental agency.

         "DominiSM" and "Domini 400 Social IndexSM" are service marks of Kinder,
Lydenberg, Domini & Co., Inc.

         This Prospectus  sets forth  concisely the  information  concerning the
Fund that a prospective  investor ought to know before  investing.  The Fund has
filed with the  Securities  and Exchange  Commission  a Statement of  Additional
Information,  dated  November  28,  1997 as  amended  from  time to time,  which
contains more detailed  information about the Fund and is incorporated into this
Prospectus  by  reference.  An investor  may obtain a copy of the  Statement  of
Additional  Information  without charge by contacting the distributor  (see back
cover for address and phone number).
    

         Unlike other mutual funds which directly acquire and manage


<PAGE>



   
their own  portfolio  of  securities,  the Fund seeks to achieve its  investment
objective by investing all of its investable  assets in the Portfolio.  The Fund
invests in the Portfolio through a master-feeder  investment fund structure. See
"Special  Information  Concerning the  Master-Feeder  Investment Fund Structure"
herein.
    
     Investors should read this Prospectus and retain it for future reference.


<PAGE>



   
                             INVESTMENT IN THE FUND

         The Fund seeks to provide its shareholders  with long-term total return
which  corresponds  to the total  return  performance  of the  Domini 400 Social
IndexSM, an index comprised of stocks selected according to social criteria. The
Fund may be  appropriate,  therefore,  for investors who are willing to ride out
stock  market  fluctuations  in pursuit of long-term  returns.  Because the Fund
seeks to track,  rather than exceed,  the performance of a particular index, the
Fund is not managed in the same way as other mutual funds.  In  particular,  the
manager  generally  does not judge  the  merits  of any  particular  stock as an
investment.  Therefore,  investors  should not expect to achieve the potentially
greater results that could be obtained by a fund that aggressively seeks growth.

         The  value  of an  investment  in the  Fund  varies  from  day to  day,
generally  reflecting  changes in the  financial  condition of the  companies in
which the  Portfolio  invests,  general  market  conditions  and  political  and
economic factors.  Stock prices can fluctuate  dramatically in response to these
and other factors or speculation about these factors. Over the long term, stocks
have generally  shown greater  growth  potential than other types of securities.
However,  when you sell your Fund  shares,  they may be worth  more or less than
what you paid for them.

         Potential  investors should note that because the Portfolio seeks to be
fully invested in the stocks comprising the Domini 400 Social IndexSM,  the Fund
is not a balanced investment plan. Potential investors should also note that the
manager of the Portfolio, Domini Social Investments LLC, has no prior experience
in  managing or  advising a mutual  fund.  You should  carefully  consider  your
investment  objectives and risk tolerance  before making a decision to invest in
the Fund.
    

                                    THE FUND

         Domini  Institutional  Social  Equity  Fund (the  "Fund") is a no-load,
diversified,  open-end management  investment  company.  The Fund is a series of
shares of beneficial  interest of Domini  Institutional  Trust (the "Trust"),  a
business trust  organized under the laws of the  Commonwealth  of  Massachusetts
(commonly known as a "Massachusetts business trust") on April 1, 1996.

   
         Shares of the Fund are sold  continuously  by  Signature  as the Fund's
distributor (the  "Distributor").  The minimum initial investment is $2,000,000.
An investor should obtain from the  Distributor,  and should read in conjunction
with this prospectus,  the materials  describing the procedures under which Fund
shares may be purchased and redeemed.  See "Purchases and Redemptions of Shares"
herein.
    

         Proceeds  from the sale of  shares  of the  Fund  are  invested  in the
Portfolio which then purchases securities in accordance with

                                                         1

<PAGE>



   
its investment objective and policies.  Domini Social Investments LLC ("DSI") is
the Portfolio's manager (the "Manager") and provides investment  supervisory and
administration  services to the  Portfolio.  Mellon Equity  Associates  ("Mellon
Equity") is the Portfolio's  investment  submanager (the  "Submanager").  DSI is
also the sponsor ("Sponsor") of the Fund and provides administrative services to
the Fund. The Boards of Trustees of the Fund and of the Portfolio  provide broad
supervision over the affairs of the Fund and of the Portfolio, respectively. The
Trustees  who  are not  "interested  persons"  of the  Fund  as  defined  in the
Investment  Company Act of 1940,  as amended (the "1940 Act") (the  "Independent
Trustees"),  are the  same  as the  Independent  Trustees  of the  Portfolio.  A
majority  of the Fund's  Trustees  are not  affiliated  with the  Manager or the
Submanager.  For  further  information  about the  Trustees  of the Fund and the
Portfolio,  see  "Management  of the Fund and the Portfolio" in the Statement of
Additional Information.
    

       
   
Kinder. Lydenberg,  Domini & Co., Inc. ("KLD"), the former investment adviser of
the Portfolio and an affiliate of DSI,  determines the composition of the Domini
400  Social  IndexSM  (which  determines  the  composition  of  the  Portfolio's
securities). The following persons are primarily responsible for the development
and maintenance of the Domini 400 Social IndexSM: Steven D. Lydenberg,  Director
of Research, KLD, since 1990; and Peter D. Kinder,  President,  KLD, since 1988.
The  Submanager  manages the  investments  of the  Portfolio  from day to day in
accordance with the Portfolio's investment objective and policies.

See "Management"  herein for more detailed  information on the management of the
Fund and the Portfolio .
    


                                                         2

<PAGE>



                                 EXPENSE SUMMARY

         The  following  table  provides  (i) a summary  of  estimated  expenses
relating  to  purchases  and  sales of shares  of the  Fund,  and the  estimated
aggregate  annual  operating  expenses  for the  Fund  and the  Portfolio,  as a
percentage of average net assets of the Fund,  and (ii) an example  illustrating
the dollar cost of such expenses on a $1,000 investment in the Fund.
       
   
         Shareholder Transaction Expenses . . . . .  . . . . .   0%
         Annual Operating Expenses:
                  Advisory and Management Fees . . . . . . .     0.154%(1)
                  12b-1 Fees . . . . . . . . . . . . . . . .     0%
                  Other Expenses after Expense Reimbursements
                  --Administrative Services and Sponsorship Fees 0%(2)
                  --Other Expenses . . . . . . . . . . . . . . . 0.146%(3)
                  --Expense Payment Fees . . . . . . . . . . . . 0%
                                                                 - 
                  Total Operating Expenses . . . . . . . . . .   0.30%(4)
                                                                 ====    

         (1)      Under the Management Agreement between the Portfolio
                  and DSI, DSI's fee for advisory and administrative
                  services to the Portfolio is 0.20% of the average daily
                  net assets of the Portfolio but will be reduced to the
                  extent necessary to keep the aggregate annual operating
                  expenses of the Portfolio (excluding brokerage fees and
                  commissions, interest, taxes and other extraordinary
                  expenses) at no greater than 0.20% of the average daily
                  net assets of the Portfolio, through [November 1,
                  1998]. If this fee reduction were not in effect,
                  advisory and management fees for the Portfolio would be
                  0.20% of the average daily net assets of the Portfolio.

         (2)      Under  the  Sponsorship  Agreement  between  DSI and the Fund,
                  DSI's fee for administrative and sponsorship services is 0.25%
                  of the  average  daily  net  assets  of the  Fund  but will be
                  reduced to the extent  necessary to keep the aggregate  annual
                  operating expenses of the
    

                                                         3

<PAGE>



   
                  Fund (including the Fund's share of the  Portfolio's  expenses
                  but excluding brokerage fees and commissions,  interest, taxes
                  and other extraordinary  expenses) at no greater than 0.30% of
                  the average daily net assets of the Fund through  [November 1,
                  1998].   If  this   fee   reduction   were   not  in   effect,
                  administrative  services  and  sponsorship  fees  for the Fund
                  would be 0.25% of the average daily net assets of the Fund.

         (3)      DSI has made a voluntary undertaking to reimburse the
                  Fund for ordinary operating expenses (excluding
                  brokerage fees and commissions, interest, taxes and
                  other extraordinary expenses) until [November 1, 1998]
                  to the extent such ordinary expenses exceed 0.30% of
                  the average daily net assets of the Fund. Without this
                  voluntary undertaking, it is estimated that under the
                  proposed management restructuring, "Other Expenses" of
                  the Fund would be 0.358% of the average daily net
                  assets of the Fund and "Total Operating Expenses" of
                  the Fund would be 0.512% of the average daily net
                  assets of the Fund, assuming the same level of assets
                  and expenses of the Fund as existed during the fiscal
                  year ended July 31, 1997.

         (4)      Without the automatic fee reductions, which expire
                  [November 1, 1998], it is estimated that the aggregate
                  annual operating expenses of the Fund (including the
                  Fund's share of the Portfolio's expenses) would be
                  0.808% of the average daily net assets of the Fund
                  assuming the same level of assets and expenses of the
                  Fund as existed during the fiscal year ended July 31,
                  1997.

Example:
A  shareholder  of the  Fund  would  pay  the  following  expenses  on a  $1,000
investment in the Fund,  assuming (1) 5% annual return and (2) redemption at the
end of:
                           1 year   .......................................$3
                           3 years  .......................................$10
                           5 years............................... .........$17
                           10 years........................................$38

         The expense  information  in the expense table  provided above has been
restated to reflect fees  currently in effect.  The purpose of the expense table
is  to  help  investors  understand  the  various  costs  and  expenses  that  a
shareholder  will bear  directly  or  indirectly.  See  "Management"  and "Other
Information  Concerning Shares of the  Fund--Expenses" for more information with
respect to the expenses of the Fund and the Portfolio
    

                                                         4

<PAGE>



          
    

         The  "Example"  set  forth  above is  hypothetical  and  should  not be
considered  a  representation  of past or future  expenses  of the Fund.  Actual
expenses and returns may be more or less than those shown.

   
         The Trust's  Trustees  believe that the aggregate per share expenses of
the Fund  and the  Portfolio  will be less  than or  approximately  equal to the
expenses which the Fund would incur if it retained the services of an investment
manager  and an  investment  submanager  and  invested  directly in the types of
securities being held by the Portfolio.

                              FINANCIAL HIGHLIGHTS

         The following  selected data for a share  outstanding for the indicated
periods  have been audited by [ ],  independent  certified  public  accountants,
whose  reports  thereon  are  incorporated  by  reference  in the  Statement  of
Additional Information.  This information should be read in conjunction with the
financial  statements  incorporated  by reference in the Statement of Additional
Information.

         The Fund's  Annual  Report  includes  a  discussion  of those  factors,
strategies and techniques that materially affected the Fund's performance
    

                                                         5

<PAGE>



   
during the fiscal
year ended July 31, 1997, as well as certain related information.  A copy of the
Annual Report will be made available without charge upon request.

                 [INSERT FYE 7/31/97 FINANCIAL HIGHLIGHTS TABLE]
    

                             PERFORMANCE INFORMATION

         Performance  information  concerning  the Fund may from time to time be
used  in  advertisements,   shareholder  reports  or  other   communications  to
shareholders.  The Trust may provide period and average  annualized "total rates
of  return"  with  respect to the Fund.  The "total  rate of return" of the Fund
refers  to the  change  in the  value of an  investment  in a Fund over a stated
period  based on any change in net asset value per share and  includes the value
of any shares  purchasable  with any  dividends or capital  gains  distributions
declared during such period. Period total rates of return may be annualized.  An
annualized  total  rate of return is a  compounded  total  rate of return  which
assumes that the period total rate of return is generated over a 52-week period,
and that all  dividends  and capital  gains  distributions  are  reinvested.  An
annualized total rate of return will be slightly higher than a period total rate
of return if the  period is  shorter  than one year,  because  of the  effect of
compounding.

   
         Historical  total return  information for any period or portion thereof
prior to the  establishment of the Fund will be that of the Portfolio,  adjusted
to assume  that all  charges,  expenses  and fees of the Fund and the  Portfolio
which are presently in effect were deducted during such periods, as permitted by
applicable SEC staff interpretations.  The table that follows sets forth average
annual total return information for the periods indicated:

                                                     7/31/97       9/30/97
         1 Year: . . . . . . . . . . . . . . . . . . [__.__         --.--] 
         5 Years:   . . . . . . . . . . . . . . . .  [__.__         --.--]
         Commencement of Investment in the
         Portfolio* to date  . . . . . . . . . . . . [__.__         --.--]

*Domini Social Index Portfolio commenced operations on June 3,1991.
    

         The Trust may provide "yield"  quotations with respect to the Fund. The
"yield" of the Fund refers to the income  generated by an investment in the Fund
over a  30-day  or  one-month  period  (which  period  shall  be  stated  in any
advertisement  or  communications  with a  shareholder).  This  income  is  then
"annualized", that is, the amount of income generated by the investment over the
period is assumed to be generated over a

                                                         6

<PAGE>

52-week period and is shown as a percentage of investment.  A "yield" quotation,
unlike a total rate of return  quotation,  does not reflect changes in net asset
value.

   
         From time to time the Trust may also quote fund  rankings  from various
sources,  such as Lipper Analytical  Services,  Inc., and may compare the Fund's
performance to that of the Domini 400 Social IndexSM and various other unmanaged
securities  indices,  such as the  Standard & Poor's 500  Composite  Stock Price
Index  (the  "S&P  500")  and the Dow  Jones  Industrial  Average.  "Standard  &
Poor(R)",  "S&P(R)" and "Standard & Poor's  500(R)" are trademarks of Standard &
Poor's Corporation.

         See the Statement of  Additional  Information  for further  information
concerning  the  calculation  of yield and any total rate of return  quotations.
Since  the  Fund's  yield  and  total  rate of  return  quotations  are based on
historical  earnings  and since  such yield and rates of return  fluctuate  over
time,   such   quotations   should  not  be   considered  as  an  indication  or
representation of the future performance of the Fund.
    

                        INVESTMENT OBJECTIVE AND POLICIES

   
         Investment  Objective  - The  investment  objective  of the  Fund is to
provide its shareholders  with long-term total return  (reflecting both dividend
and  price  performance  of the Fund)  which  corresponds  to the  total  return
performance  of the Domini 400 Social IndexSM  (sometimes  referred to herein as
the "Index").  There can, of course,  be no assurance that the Fund will achieve
its investment  objective.  The investment  objective of the Fund may be changed
without approval by the Fund's shareholders.

         Investment  Policies  - The  Trust  seeks  to  achieve  the  investment
objective of the Fund by investing  all of the Fund's  investable  assets in the
Portfolio,  which has the same  investment  objective as the Fund. The Portfolio
seeks to achieve its  investment  objective by  investing  in the common  stocks
comprising  the Domini 400 Social Index.  The  Portfolio  will  approximate  the
weightings of securities  held by the Portfolio to the  weightings of the stocks
in the Index, except as described below, and will seek a correlation between the
weightings of securities  held by the Portfolio and the weightings of the stocks
in the  Index of 0.95 or  better.  A figure  of 1.0  would  indicate  a  perfect
correlation. As of September 30, 1997, the correlation between the weightings of
securities  held by the Portfolio and the  weightings of the stocks in the Index
was [_.__].  To the extent  practicable,  the Portfolio will attempt to be fully
invested.  The ability of the Fund to duplicate the  performance of the Index by
investing in the Portfolio  will depend to some extent on the size and timing of
cash flows into and out of the Fund and the  Portfolio as well as the Fund's and
the  Portfolio's  expenses.  Adjustments  in  the  securities  holdings  of  the
Portfolio to accommodate cash flows will track the Domini 400
    

                                                         7

<PAGE>
Social  Index to the  extent  practicable,  but this will  result  in  brokerage
expenses.

   
         Social  Criteria - The Domini 400  Social  Index was  developed  and is
currently maintained by KLD. The Domini 400 Social Index is a common stock index
comprised of the stocks of approximately 400 companies which meet certain social
criteria.  The weightings of the stocks compromising the Domini 400 Social Index
are based upon  market  capitalization.  The  criteria  used in  developing  and
maintaining the Domini 400 Social Index involve the subjective  judgment of KLD.
KLD, based on available data, seeks to exclude the following types of companies:
firms that derive more than 2% of their gross revenues from the sale of military
weapons;  firms that derive any revenue from the manufacture of tobacco products
or alcoholic beverages; firms that derive any revenue from gambling enterprises;
and firms that have an ownership  share in, or operate,  nuclear power plants,or
participate  in business  related to the nuclear fuel cycle.  KLD also considers
criteria  such  as  corporate  citizenship,  employee  relations,  environmental
performance,  and product-related issues when evaluating stocks for inclusion in
the  Domini 400 Social  Index.  The  corporate  citizenship  criteria  include a
company's record with regard to its  philanthropic  activities and its community
relations in general. The employee relations criteria include a company's record
with regard to labor matters,  workplace safety,  equal employment  opportunity,
employee  benefit  programs,  and meaningful  participation  in company  profits
either  through  stock  purchase  or profit  sharing  plans.  The  environmental
performance  criteria  include  a  company's  record  with  regard  to  fines or
penalties,  waste  disposal,  toxic  emissions,  efforts in waste  reduction and
emissions reduction,  recycling, and environmentally  beneficial fuels, products
and  services.  The  product-related  criteria  include a company's  record with
regard to product safety, marketing practices and commitment to quality.

         The  Manager  intends to vote  proxies  of  companies  included  in the
Portfolio consistent with the social criteria used in developing and maintaining
the Domini Social 400 Index.

         Index  Management  - The  Portfolio  is not managed in the  traditional
investment  sense,  since changes in the composition of its securities  holdings
are made in order to track the changes in the composition of securities included
in the Domini Social 400 Index. Moreover, inclusion of a stock in the Domini 400
Social Index does not imply an opinion by KLD or the Manager as to the merits of
that specific stock as an investment.  However, KLD and the Manager believe that
enterprises  which exhibit a social awareness,  based on the criteria  described
above,  should be better  prepared to meet future  societal  needs for goods and
services and may also be less likely to incur certain legal liabilities that may
be incurred when a product or service is determined to be harmful, and that such
enterprises should over the longer term be able to provide a positive return
    

                                                         8

<PAGE>
to investors.

   
         In selecting stocks for inclusion in the Domini Social 400 Index:

         1. KLD  evaluated,  in accordance  with the social  criteria  described
above,  each of the  companies  the stocks of which  comprise  the S&P 500. If a
company  whose stock was included in the S&P 500 met KLD's  social  criteria and
met KLD's further  criteria for industry  diversification,  financial  solvency,
market  capitalization,  and minimal portfolio turnover,  it was included in the
Domini 400 Social Index.  As of July 31, 1997, of the 500 companies whose stocks
comprised the S&P 500, approximately [--]% were included in the Index.

         2. The remaining  stocks  comprising the Domini 400 Social Index (i.e.,
those  which are not  included  in the S&P 500) were  selected  based upon KLD's
evaluation  of the  social  criteria  described  above,  as well  as upon  KLD's
criteria   for   industry    diversification,    financial   solvency,    market
capitalization,  and minimal portfolio turnover.  Because of the social criteria
applied in the  selection  of stocks  comprising  the  Domini 400 Social  Index,
industry  sector  weighting in the Domini 400 Social  Index may vary  materially
from the industry weightings in other stock indices,  including the S&P 500, and
certain industry sectors will be excluded altogether.

         The  component  stocks of the S&P 500 are  chosen by  Standard & Poor's
Corporation  ("S&P")  solely with the aim of achieving a  distribution  by broad
industry  groupings that approximates the distribution of these groupings in the
New York Stock Exchange common stock population,  taken as the assumed model for
the composition of the total market. Construction of the S&P 500 by S&P proceeds
from industry groups to the whole.  Since some industries are  characterized  by
companies  of  relatively  small  stock  capitalization,  the S&P 500  does  not
comprise the 500 largest  companies  listed on the New York Stock Exchange.  Not
all stocks  included  in the S&P 500 are listed on the New York Stock  Exchange.
However,  the total market value of the S&P 500 as of July 31, 1997  represented
[__]% of the  aggregate  market  value of common  stocks  traded on the New York
Stock Exchange.
    

         Inclusion  of a stock in the S&P 500 Index in no way implies an opinion
by S&P as to its  attractiveness  as an  investment,  nor is S&P a sponsor of or
otherwise affiliated with the Fund or the Portfolio.

   
         Some of the stocks  included  in the  Domini  400  Social  Index may be
stocks of  foreign  issuers  (provided  that the stocks are traded in the United
States in the form of American  Depositary  Receipts or similar  instruments the
market for which is denominated in United States dollars). Securities of foreign
issuers may represent a greater degree of risk (i.e., as a result
    

                                                         9

<PAGE>



     of exchange rate fluctuation, tax provisions, war or expropriation) than do
securities of domestic issuers.

   
         The  weightings  of stocks in the Domini 400 Social  Index are based on
each stock's relative total market capitalization, (i.e., market price per share
times the number of shares outstanding).  Because of this weighting,  as of July
31, 1997 approximately [__]% of the Domini 400 Social Index was comprised of the
20 largest companies in that Index.

         KLD may  exclude  from the  Domini 400 Social  Index  stocks  issued by
companies  which are in  bankruptcy  or whose  bankruptcy  KLD  believes  may be
imminent.

         The Portfolio intends to readjust its securities holdings  periodically
such that those holdings will correspond,  to the extent reasonably practicable,
to the Domini 400 Social Index both in terms of composition  and weighting.  The
timing and extent of  adjustments  in the  holdings  of the  Portfolio,  and the
extent of the  correlation  of the holdings of the Portfolio with the Domini 400
Social  Index,  will  reflect the  Submanager's  judgment as to the  appropriate
balance  between the goal of correlating  the holdings of the Portfolio with the
composition  of the Index,  and the goals of  minimizing  transaction  costs and
keeping  sufficient  reserves  available  for  anticipated  redemptions  of Fund
shares. To the extent practicable, the Portfolio will seek a correlation between
the  weightings  of securities  held by the  Portfolio to the  weightings of the
securities  in the  Index  of 0.95 or  better.  The  Board  of  Trustees  of the
Portfolio will receive and review, at least quarterly,  a report prepared by the
Submanager  comparing the performance of the Fund and the Portfolio with that of
the Index,  and  comparing  the  composition  and  weighting of the  Portfolio's
holdings with those of the Index, and will consider what action,  if any, should
be taken in the event of a significant  variation between the performance of the
Fund or the Portfolio, as the case may be, and that of the Index, or between the
composition and weighting of the Portfolio's  securities  holdings with those of
the stocks  comprising the Index. If the  correlation  between the weightings of
securities  held by the Portfolio and the  weightings of the stocks in the Index
falls below 0.95, the Board of Trustees will review with the Submanager  methods
for  increasing  such  correlation,  such as through  adjustments  in securities
holdings
    

                                                        10

<PAGE>

of the Portfolio.

   
         The Portfolio may invest cash  reserves in short-term  debt  securities
(i.e.,  securities  having a remaining  maturity of one year or less)  issued by
agencies  or  instrumentalities  of  the  United  States  Government,   bankers'
acceptances,  commercial  paper or  certificates  of deposit,  provided that the
issuer satisfies KLD's social criteria.  The Portfolio does not currently intend
to invest in direct obligations of the United States Government. Short-term debt
securities  purchased by the Portfolio will be rated at least Prime-1 by Moody's
Investors Service, Inc. or A-1+ or A-1 by S&P or, if not rated, determined to be
of comparable  quality by the  Portfolio's  Board of Trustees.  The  Portfolio's
policy is to hold its  assets in such  securities  pending  readjustment  of its
portfolio holdings of stocks comprising the Domini 400 Social Index and in order
to meet anticipated redemption requests. Such investments are not intended to be
used for defensive purposes in periods of anticipated market decline.

         The annual  portfolio  turnover  rates of the  Portfolio for the fiscal
years ended July 31, 1996 and July 31,  1997 were 5% and 1%,  respectively.  The
Portfolio's  average  brokerage  commission  rates paid per share for the fiscal
years ended July 31, 1996 and July 31, 1997 were $0.05 and $0.05, respectively.

         The   Portfolio's   primary   consideration   in   placing   securities
transactions with  broker-dealers  for execution is to obtain,  and maintain the
availability  of,  execution  at the  most  favorable  prices  and  in the  most
effective  manner  possible.  Neither the  Portfolio nor the Fund will engage in
brokerage  transactions  with the Manager,  the Submanager or the Sponsor or the
Administrator or any of their respective affiliates or any affiliate of the Fund
or the Portfolio.  For further  discussion  regarding  securities trading by the
Portfolio, see the Statement of Additional Information.
    

         Consistent with applicable regulatory policies,  including those of the
Board of Governors of the Federal Reserve System and the Securities and Exchange
Commission,  the Portfolio  may make loans of its  securities to member banks of
the Federal Reserve System and to  broker-dealers.  Such loans would be required
to be secured continuously by collateral consisting of securities,  cash or cash
equivalents  maintained  on a current  basis at an amount at least  equal to the
market value of the  securities  loaned.  The Portfolio  would have the right to
call a loan and obtain the securities  loaned at any time on three days' notice.
During the existence of a loan, the Portfolio would continue to collect the

                                                        11

<PAGE>

equivalent  of the  dividends  paid by the issuer on the  securities  loaned and
would also receive interest on investment of cash collateral.  The Portfolio may
pay  finder's  and other fees in  connection  with  securities  loans.  Loans of
securities involve a risk that the borrower may fail to return the securities or
may fail to provide additional collateral.

         Although it has no current  intention to do so, the  Portfolio may make
short sales of securities or maintain a short  position,  if at all times when a
short position is open the Portfolio owns an equal amount of such securities, or
securities convertible into such securities.

   
         Special  Information  Concerning  the  Master-Feeder   Investment  Fund
Structure
    

         The  investment  objective  of the  Fund  may be  changed  without  the
approval of the Fund's  shareholders,  but not without written notice thereof to
shareholders  thirty  days prior to  implementing  the  change.  If there were a
change in the Fund's investment objective,  shareholders should consider whether
the Fund  remains  an  appropriate  investment  in  light of their  then-current
financial  positions and needs.  The  investment  objective of the Portfolio may
also be changed without the approval of the investors in the Portfolio,  but not
without written notice

                                                        12

<PAGE>

thereof  to the  investors  in the  Portfolio  (and  notice  by the  Fund to its
shareholders) 30 days prior to implementing the change. There can, of course, be
no assurance that the  investment  objective of either the Fund or the Portfolio
will be achieved.  See "Investment  Restrictions" in the Statement of Additional
Information for a description of the fundamental policies of the Fund and of the
Portfolio that cannot be changed without  approval by the holders of a "majority
of the outstanding  voting  securities" (as defined in the 1940 Act) of the Fund
or the  Portfolio,  respectively.  Except as stated  otherwise,  all  investment
guidelines,  policies and restrictions  described herein and in the Statement of
Additional Information are non-fundamental.

         Smaller funds investing in the Portfolio may be materially  affected by
the actions of larger funds investing in the Portfolio.  For example, if a large
fund withdraws from the Portfolio, the remaining funds may experience higher pro
rata operating  expenses,  thereby  producing lower returns.  Additionally,  the
Portfolio  may become less  diverse,  resulting  in  increased  portfolio  risk.
(However,  this possibility  exists as well for  traditionally  structured funds
which have large or  institutional  investors.)  Also,  funds with a greater pro
rata  ownership in the  Portfolio  could have  effective  voting  control of the
operations of the  Portfolio.  Subject to exceptions  that are not  inconsistent
with  applicable  rules or policies of the Securities  and Exchange  Commission,
whenever the Trust is requested to vote on matters  pertaining to the Portfolio,
the Trust will hold a meeting of  shareholders  of the Fund and will cast all of
its votes in the same proportion as the votes of the Fund's  shareholders.  Fund
shareholders  who do not vote will not affect the Trust's votes at the Portfolio
meeting.  The percentage of the Trust's votes representing Fund shareholders not
voting will be voted by the Trustees of the Trust in the same  proportion as the
Fund  shareholders  who do, in fact,  vote.  Certain  changes in the Portfolio's
investment objective,  policies or restrictions may require the Fund to withdraw
its  interest  in  the  Portfolio.   Any  such  withdrawal  could  result  in  a
distribution   "in  kind"  of  portfolio   securities  (as  opposed  to  a  cash
distribution from the Portfolio). If securities are distributed,  the Fund could
incur  brokerage,  tax or other charges in converting the securities to cash. In
addition, the distribution in kind may result in a less diversified portfolio of
investments or adversely affect the liquidity of the Fund.  Notwithstanding  the
above, there are other means for meeting shareholder  redemption requests,  such
as borrowing.

         The Trust may withdraw the Fund's  investment from the Portfolio at any
time,  if the Board of Trustees of the Trust  determines  that it is in the best
interests of the Fund to do so. Upon any such withdrawal,  the Board of Trustees
would  consider what action might be taken,  including the investment of all the
assets  of the  Fund  in  another  pooled  investment  entity  having  the  same
investment objective as the Fund or the retention of an

                                                        13

<PAGE>

   
investment adviser to manage the Fund's assets in accordance with the investment
policies  described  above  with  respect  to the  Portfolio.  In the  event the
Trustees of the Trust were  unable to find a  substitute  investment  company in
which to invest  the  Fund's  assets  and were  unable to  secure  directly  the
services of an investment manager and investment  submanager,  the Trustees will
seek to determine the best course of action.

         For more  information  about the Portfolio's  policies,  management and
expenses see  "Investment  Objective  and  Policies",  "Management",  and "Other
Information Concerning Shares of the Fund - Expenses". For information about the
Portfolio's investment restrictions see the Statement of Additional
    
Information.
                                                    -----------

   
         As a matter of  fundamental  policy,  the Trust will  invest all of the
investable  assets of the Fund (either directly or through the Portfolio) in one
or more of: (i)  stocks  comprising  an index of  securities  selected  applying
social  criteria,  which  initially  will be the Domini 400 Social  Index,  (ii)
short-term  debt securities of issuers which meet social  criteria,  (iii) cash,
and (iv) options on equity securities. This fundamental policy cannot be changed
without the approval of the holders of a majority of the Fund's  shares  (which,
as used in this  Prospectus,  means  the  lesser  of (a)  more  than  50% of the
outstanding  shares of the Fund, or (b) 67% or more of the outstanding shares of
the Fund  present at a meeting  at which  holders of more than 50% of the Fund's
outstanding  shares  are  represented  in person or by  proxy).  Except for this
fundamental  policy,  investor  approval is not required to change the Fund's or
the Portfolio's investment objective or any of the investment policies described
above.
    

         The Statement of Additional  Information  filed with the Securities and
Exchange  Commission  includes a discussion of other  investment  policies and a
listing of specific investment restrictions which govern the Portfolio's and the
Fund's investment policies. Certain of the investment restrictions listed in the
Statement of Additional  Information may not be changed by the Portfolio without
the  approval of the  shareholders  of the Fund and the other  investors  in the
Portfolio or by the Trust without the approval of the  shareholders of the Fund.
If a percentage or rating  restriction on investment or utilization of assets is
adhered to at the time an investment is made or assets are so utilized,  a later
change in percentage  resulting from changes in the Portfolio's  total assets or
the value of the  Portfolio's  securities  or a later  change in the rating of a
security held by the Portfolio will not be considered a violation of policy.

   
         Expenses of the  Portfolio  with respect to investment  management  and
administrative  services,  investment  submanagement  services  and  sponsorship
services and  administration  services are  described  herein under  "Management
Manager, - Submanager and - Sponsor", respectively.
    

                                                        14

<PAGE>



                                   MANAGEMENT

   
         The Boards of  Trustees  of the Fund and the  Portfolio  provide  broad
supervision  over the affairs of the Fund and the Portfolio,  respectively.  The
Fund has  retained  the  services of DSI as Sponsor,  but has not  retained  the
services of an investment manager or investment  submanager since the Fund seeks
to achieve its investment objective by investing all of its investable assets in
the  Portfolio.  The  Portfolio  has retained the services of DSI as  investment
manager and Mellon Equity as investment submanager.    
   

                                  Manager    

   
         DSI, a Massachusetts  limited liability  company,  provides  investment
management and administrative services to the Portfolio pursuant to a Management
Agreement. DSI has been registered as an investment adviser under the Investment
Advisers Act of 1940 since 1997. The services provided by the Manager consist of
investment supervisory services,  overall operational support and administrative
services.  The  administrative  services include the provision of general office
facilities and supervising the overall administration of the Portfolio.  For its
services under the Management Agreement, the Manager receives from the Portfolio
a fee  accrued  daily and paid  monthly at an annual  rate equal to 0.20% of the
Portfolio's average daily net assets, on an annualized basis for the Portfolio's
then-current fiscal year, subject to reduction. See "Expenses" for a description
of this fee reduction pursuant to the Management Agreement.

         Prior to [November 1, 1997], KLD, as the Portfolio's  former investment
adviser,  received from the Portfolio a fee accrued daily and paid monthly at an
annual rate equal to 0.025% of the Portfolio's  average daily net assets,  on an
annualized  basis for the Portfolio's  then-current  fiscal year.  Additionally,
prior to [November 1, 1997], KLD received from the Portfolio a fee accrued daily
and paid  monthly  at an annual  rate equal to 0.025% of the  average  daily net
assets of the  Portfolio  for its then  current  fiscal year for  administrative
services.

         "DominiSM"  and "Domini 400 Social  IndexSM"  are service  marks of KLD
which  are  licensed  to DSI with the  consent  of Amy L.  Domini.  Pursuant  to
agreements among DSI, Amy L. Domini, and each of the Fund and the Portfolio, the
Portfolio  may be  required to  discontinue  use of these  service  marks if DSI
ceases to be the Manager of the Portfolio or Ms.  Domini  withdraws her consent,
and the Fund may be required to  discontinue  the use of these  service marks if
either DSI  ceases to be the  Sponsor of the Fund or Ms.  Domini  withdraws  her
consent or if either DSI ceases to be the Manager of the  Portfolio  or the Fund
ceases to invest all of its assets in the Portfolio.

                                   Submanager

         Mellon  Equity  provides  investment   submanagement  services  to  the
Portfolio on a day-to-day basis pursuant to a Submanagement  Agreement with DSI.
Mellon Equity does not determine the composition of the Domini Social Index.

         Under the Submanagement Agreement, DSI pays Mellon Equity an investment
submanagement  fee equal on an annual  basis to 0.10% of the  average  daily net
assets of the Portfolio.  Prior to [November 1, 1997], the Portfolio paid Mellon
Equity an investment management fee equal on an annual basis to 0.10% of
    

                                                        15

<PAGE>

   
the average daily net assets of the Portfolio.

         Mellon Equity is a  Pennsylvania  business  trust founded in 1987 whose
beneficial  owners are Mellon Bank N.A. and MMIP, Inc (a wholly owned subsidiary
of Mellon Bank Corporation  ("Mellon Bank")).  Mellon Equity has been registered
as an investment  adviser under the Investment  Advisers Act of 1940 since 1986.
Prior to 1987, the Submanager was part of the Equity  Management Group of Mellon
Bank's  Trust  and  Investment   Department,   which  managed  domestic  equity,
tax-exempt and institutional pension assets since 1947. As of December 31, 1996,
the Submanager had approximately $11.3 billion in assets under management.

         [John R. O'Toole (a senior vice president of Mellon  Equity,  CFA and a
member of AIMR),  has been primarily  responsible  for the day-to-day  portfolio
management of the Portfolio  since November 1994. He has been employed by Mellon
Equity and/or Mellon Bank as a portfolio manager for over five years.]

                                     Sponsor

         Pursuant to a  Sponsorship  Agreement,  DSI  provides the Fund with the
administrative personnel and services necessary to operate the Fund. In addition
to general administrative  services and facilities for the Fund similar to those
provided by DSI to the Portfolio  under the  Management  Agreement,  DSI answers
questions from the general public, the media and investors in the Fund regarding
the  composition of the Domini 400 Social Index and the  securities  holdings of
the Portfolio. For these services and facilities, DSI receives fees computed and
paid monthly from the Fund at an annual rate equal to 0.25% of the average daily
net assets of the Fund
    

                                                        16

<PAGE>

   
for the Fund's then-current  fiscal year , subject to reduction.  See "Expenses"
for a description of this fee reduction pursuant to the Sponsorship Agreement.

                                   Distributor

         Signature is the principal distributor for the shares of the Fund
for which services it receives no fee.
    

       
Transfer Agent and Custodian

         ** 1 The  Trust has  entered  into a  Transfer  Agency  Agreement  with
Fundamental Shareholder Services, Inc. ("FSSI"),  pursuant to which FSSI acts as
Transfer Agent for the Trust.  The Transfer Agent  maintains an account for each
shareholder of the Fund,  performs other transfer  agency  functions and acts as
dividend  disbursing  agent  for the Fund.  Pursuant  to  Custodian  Agreements,
Investors  Bank & Trust  Company  ("IBT")  acts as the  custodian of the Trust's
assets  (i.e.,  cash  and  the  Fund's  interest  in the  Portfolio)  and as the
custodian  of  the  Portfolio's  assets  (the   "Custodian").   The  Custodian's
responsibilities  include  safeguarding and controlling the Portfolio's cash and
securities, handling the receipt and delivery of securities,  determining income
and collecting  interest on the Portfolio's  investments,  maintaining  books of
original  entry for portfolio and fund  accounting  and other required books and
accounts,  and  calculating  the daily net asset value of the  Portfolio and the
daily net asset value of shares of the Fund.  Securities  held by the  Portfolio
may be deposited into certain  securities  depositaries.  The Custodian does not
determine the  investment  policies of the Portfolio or decide which  securities
the Portfolio will buy or sell. The Portfolio may, however, invest in securities
of the  Custodian  and may deal with the  Custodian as  principal in  securities
transactions.  IBT also serves as transfer  agent for the  Portfolio.  For their
services,  FSSI and IBT will receive such  compensation as may from time to time
be agreed upon by each of them and the Fund or the Portfolio.
       

                       PURCHASES AND REDEMPTIONS OF SHARES

                                                        17

<PAGE>

                                    Purchases

         Shares  of the  Fund may be  purchased  directly  from the  Distributor
without a sales load at the net asset value next  determined  after an order for
shares is  received  in good order and  accepted by the Trust on any day the New
York Stock  Exchange is open for trading (a "Fund  Business  Day").  The minimum
initial  investment in the Fund is $2,000,000.  The Fund in its sole  discretion
may permit  purchases for lesser  amounts.  The Fund reserves the right to cease
offering its shares for sale at any time or to reject any order for the purchase
of its  shares.  The Fund  expects  to reject  any  order  that is not an exempt
transaction under the relevant state securities laws.

         For each shareholder of record, the Fund establishes an open account to
which all shares purchased are credited  together with any dividends and capital
gains  distributions which are paid in additional shares. See "Other Information
Concerning Shares of the Fund - Dividends and Capital Gains  Distributions".  No
share certificates will be issued.

         Investors  desiring  to  purchase  shares  of the  Fund by mail  should
complete an Account  Application  and mail the  Application and a check (in U.S.
dollars),  payable to "Domini  Institutional Social Equity Fund," to the Fund at
the following address:

                          Domini Institutional Social Equity Fund
                          P.O. Box 117
                          New York, New York 10274-0117

         For overnight deliveries, please use the following address:

                          Domini Institutional Social Equity Fund
                          c/o Fundamental Shareholder Services, Inc.
                          90 Washington Street
                          New York, New York 10006
                          (212) 635-5000

         An investor  desiring to  purchase  shares by a wire  transfer of funds
should request its bank to transmit immediately available funds. The information
transmitted  with the funds must include the  investor's  name and address and a
statement  indicating  whether a new account is being  established  by such wire
transfer or whether such wire  transfer is being made by a  shareholder  with an
account  with the Fund.  If the  initial  purchase  by an  investor is by a wire
transfer of funds,  an account  number will be assigned to such  investor and an
Account  Application must  subsequently be completed and mailed to the Fund. For
purchases by wire transfer,  please call Fundamental Shareholder Services, Inc.,
the Fund's transfer agent (the "Transfer  Agent"),  at  1-800-782-4165 to obtain
wire transfer instructions.

   
         Shares of the Fund may be purchased by exchanging securities
    

                                                        18

<PAGE>



   
acceptable  to the Trust for  shares of the Fund.  The Trust  will not  accept a
security in exchange for Fund shares unless (a) the security is consistent  with
the investment objective and polices of the Fund and the Portfolio,  and (b) the
security is deemed  acceptable  by the Manager  and the  Submanager.  Securities
offered in exchange for shares of the Fund will be valued in accordance with the
usual valuation procedure for the Fund. See "Net Asset Value".
    

         For  further  information  on how to  purchase  shares of the Fund,  an
investor  should contact the  Distributor  (see back cover for address and phone
number).

                                   Redemptions

   
         A  shareholder  may  redeem  all or any  portion  of the  shares in its
account at any time at the net asset value next  determined  after a  redemption
request in proper form is furnished by the shareholder to the Fund.  Redemptions
will therefore be effected on the same day the  redemption  order is received by
the Fund  provided  such order is received and  accepted on a Fund  Business Day
prior to the time at which the net asset  value of the Fund is  determined.  The
proceeds of a redemption  will be paid by the Fund in federal funds  normally on
the next Fund  Business Day, but in any event within seven days if all checks in
payment for the purchase of shares to be redeemed  have been cleared by the Fund
(which may take up to 15 days).  Redemptions may be paid by the Fund by check or
by wire  transfer if the  appropriate  box on the Account  Application  has been
completed.  Instructions  for wire  redemptions  are set  forth  in the  Account
Application.
    

         Redemptions  may be made by letter to the Fund  specifying  the  dollar
amount or number of shares to be  redeemed  and the account  number.  The letter
must be  signed  in  exactly  the same way the  account  is  registered  and the
signatures must be guaranteed by an eligible signature guarantor.  In some cases
the Fund may require the furnishing of additional  documents.  Written  requests
should be mailed to the Fund at the following address:

                          Domini Institutional Social Equity Fund
                          P.O. Box 117
                          New York, New York 10274-0117

         For overnight deliveries, please use the following address:

                          Domini Institutional Social Equity Fund
                          c/o Fundamental Shareholder Services, Inc.
                          90 Washington Street
                          New York, New York 10006
                          (212) 635-5000

       
                                                        19

<PAGE>

       
   
         An  investor  may  also  redeem   shares  by   telephone   (by  calling
1-800-782-4165)  if the  appropriate  box on the  Account  Application  has been
completed.  The Trust, Transfer Agent and Distributor will not be liable for any
loss, liability, cost or expense for acting upon telephone instructions believed
to be genuine.  Accordingly,  shareholders will bear the risk of loss. The Trust
will employ reasonable  procedures to confirm that instructions  communicated by
telephone  are  genuine,  including,  without  limitation,  recording  telephone
instructions  and/or  requiring  the  caller to  provide  some form of  personal
identification. Failure to employ reasonable procedures may make the Fund liable
for any losses due to unauthorized  or fraudulent  telephone  instructions.  The
following  information must be supplied by the shareholder or broker at the time
a request for a telephone  redemption  is made:  (1) the  shareholder's  account
number;  (2) the  shareholder's  social  security  number;  and (3) the name and
account number of the shareholder's designated securities dealer or bank.

         The Trust,  Transfer Agent and Distributor  reserve the right to refuse
wire or  telephone  redemptions.  Procedures  for  redeeming  shares  by wire or
telephone  may be  modified  or  terminated  at any  time  by the  Trust  or the
Distributor.  The  Trust  reserves  the  right to  restrict  or  terminate  wire
redemption  privileges.  Proceeds of wire redemptions will be transferred within
seven days after receipt of the request.
    

         The value of shares redeemed may be more or less than the shareholder's
cost,  depending  on the Fund's  performance  during the period the  shareholder
owned  its  shares.  Redemptions  of  shares  are  taxable  events  on which the
shareholder may recognize a gain or a loss.

         The right of any  shareholder  to receive  payment  with respect to any
redemption may be suspended or the payment of the redemption  proceeds postponed
during any period in which the New York Stock  Exchange  is closed  (other  than
weekends or  holidays)  or trading on such  Exchange is  restricted,  or, to the
extent otherwise permitted by the 1940 Act, if an emergency exists.

                                   TAX MATTERS

         Each year the Fund  intends  to  qualify  and elect to be  treated as a
"regulated  investment  company"  under the Internal  Revenue  Code of 1986,  as
amended  (the  "Code").  Provided  the Fund meets all income,  distribution  and
diversification  requirements  of the  Code,  and  distributes  all  of its  net
investment  income and realized capital gains to shareholders in accordance with
the

                                                        20

<PAGE>

timing  requirements  imposed by the Code,  the Fund will not be required to pay
any federal  income or excise taxes.  The Portfolio will also not be required to
pay any  federal  income  or excise  taxes.  However,  shareholders  of the Fund
normally will have to pay federal income taxes, and any state or local taxes, on
the dividends and any capital  gains  distributions  they receive from the Fund.
After the end of each calendar year, each shareholder  receives  information for
tax  purposes on the  dividends  and any capital  gains  distributions  received
during that calendar year including the portion taxable as ordinary income,  the
portion taxable as long-term capital gains, the portion, if any,  representing a
return of capital  (which  generally  is free of current  taxes but results in a
basis reduction),  the amount,  if any, of federal income tax withheld,  and the
amount  of any  dividends  eligible  for the  dividends-received  deduction  for
corporations.

         Dividends and distributions to shareholders will be treated in the same
manner for federal income tax purposes whether received in cash or reinvested in
additional  shares of the Fund.  Distributions  of net capital gains (i.e.,  the
excess of net long-term  capital gains over net short-term  capital losses) will
cause any  short-term  capital  loss  realized  on the  disposition  by a Fund's
shareholder  of Fund shares held for six or fewer months to be  recharacterized,
to the extent of those distributions, as long-term capital loss.

         Under the back-up  withholding rules of the Code, certain  shareholders
may be subject to 31%  withholding  of federal income tax on  distributions  and
payments  made by the Fund.  Generally,  shareholders  are  subject  to  back-up
withholding  if  they  have  not  provided  the  Fund  with a  correct  taxpayer
identification number and certain other certifications.

         The Trust is organized as a  Massachusetts  business  trust and,  under
current  law,  the Fund is not  liable for any  income or  franchise  tax in the
Commonwealth  of  Massachusetts  as long as the Fund  qualifies  as a  regulated
investment company under the Code.

         The foregoing  discussion is intended for general  information  only. A
prospective  shareholder  should  consult with its own tax advisor as to the tax
consequences of an investment in the Fund, including the status of distributions
from the Fund under applicable state or local law.

                 OTHER INFORMATION CONCERNING SHARES OF THE FUND

Net Asset Value

         The Trust  determines  the net asset value of each of the Fund's shares
on each Fund Business Day. This  determination is made once during each such day
as of the close of regular  trading on the New York Stock  Exchange by deducting
the amount of the Fund's  liabilities  from the value of its assets and dividing
the

                                                        21

<PAGE>

difference by the number of shares of the Fund outstanding.  A share's net asset
value is effective for orders received by the Distributor on a Fund Business Day
prior to the time at which such net asset value is determined.

         Since the Trust will invest all of the Fund's  investable assets in the
Portfolio,  the value of the Fund's investable assets will be equal to the value
of its  beneficial  interest  in the  Portfolio.  The  net  asset  value  of the
Portfolio is determined as of the close of regular trading on the New York Stock
Exchange on each Fund Business  Day, by deducting the amount of the  Portfolio's
liabilities  from the value of its  assets.  The value of the Fund's  beneficial
interest in the Portfolio will be determined by multiplying  the net asset value
of the Portfolio by the percentage, effective for that day, which represents the
Fund's  share of the  aggregate  beneficial  interests  in the  Portfolio.  (See
"Description of Shares, Voting Rights and Liabilities" below.)

         Equity  securities  held by the  Portfolio  are valued at the last sale
price on the exchange on which they are primarily traded or on the NASDAQ system
for  unlisted  national  market  issues,  or at the last  quoted  bid  price for
securities  in  which  there  were  no  sales  during  the  day or for  unlisted
securities not reported on the NASDAQ system. If the Portfolio  purchases option
contracts,  such option  contracts which are traded on commodities or securities
exchanges are normally  valued at the settlement  price on the exchange on which
they are traded.  Short-term  obligations with remaining maturities of less than
sixty  days are  valued at  amortized  cost,  which  constitutes  fair  value as
determined  by the Board of  Trustees  of the  Portfolio.  Portfolio  securities
(other than short-term  obligations with remaining maturities of less than sixty
days) for which there are no such  quotations or  valuations  are valued at fair
value as  determined  in good faith by or at the  direction  of the  Portfolio's
Board of Trustees.

                    Dividends and Capital Gains Distributions

         Substantially  all of the Fund's net income from dividends and interest
is paid to the Fund's  shareholders  quarterly  (in the  months of March,  June,
September and December) as a dividend.  For this purpose, the Fund's "net income
from dividends and interest"  consists of all income from dividends and interest
accrued on the assets of the Fund (i.e., the Fund's share of the Portfolio's net
income from dividends and interest), less all actual and accrued expenses of the
Fund determined in accordance with generally accepted accounting principles.

         The Fund also declares a long-term  capital gains  distribution  to its
shareholders on an annual basis, usually in December, if the Fund's share of the
Portfolio's  profits during the year from the sale of securities held for longer
than the  applicable  long-term  capital gains holding period exceeds the Fund's
share of the Portfolio's losses during such year from the sale of

                                                        22

<PAGE>

securities  together with the Fund's share of the Portfolio's net capital losses
carried  forward  from prior years (to the extent not used to offset  short-term
capital gains). The Fund's share of the Portfolio's net short-term capital gains
realized during each fiscal year will also be distributed at that time.

         The Fund will also make additional distributions to its shareholders to
the extent  necessary to avoid  application of the 4%  nondeductible  excise tax
created by the Tax Reform  Act of 1986 on certain  undistributed  income and net
capital gains of mutual funds.

         A  shareholder  of the Fund may elect to receive  dividends and capital
gains  distributions  in either  cash or  additional  shares.  Unless  otherwise
specified  in  writing  by  a  shareholder,  all  dividends  and  capital  gains
distributions will be reinvested in additional shares.

                                    Expenses

         The  Fund  and the  Portfolio  each  are  responsible  for all of their
respective expenses, including the compensation of their respective Trustees who
are not  interested  persons of the Fund or the  Portfolio;  governmental  fees;
interest  charges;  taxes;  membership dues in the Investment  Company Institute
allocable  to the  Fund or the  Portfolio;  fees  and  expenses  of  independent
auditors,  of legal counsel and of any transfer agent,  custodian,  registrar or
dividend disbursing agent of the Fund or the Portfolio;  insurance premiums; and
expenses of  calculating  the net asset value of the  Portfolio and of shares of
the Fund.

   
         The Fund will also pay  sponsorship  fees payable to the  Sponsor;  all
expenses  of  distributing  and  redeeming  shares  and  servicing   shareholder
accounts;  expenses of preparing,  printing and mailing  prospectuses,  reports,
notices,  proxy  statements  and  reports to  shareholders  and to  governmental
offices and commissions; expenses of shareholder meetings; and expenses relating
to the issuance,  registration  and  qualification of shares of the Fund and the
preparation, printing and mailing of prospectuses for such purposes.

         Under the Sponsorship Agreement DSI's fee will be reduced to the extent
necessary to keep the aggregate annual operating expenses of the Fund (including
the Fund's share of the  Portfolio's  expenses but excluding  brokerage fees and
commissions,  interest,  taxes and other  extraordinary  expenses) at no greater
than 0.30% of the  average  daily net assets of the Fund  through  [November  1,
1998].
    

         The Portfolio is also  responsible for the expenses  connected with the
execution, recording and settlement of security transactions;  fees and expenses
of the  Portfolio's  custodian  for all  services  to the  Portfolio,  including
safekeeping of funds and securities and maintaining required books and accounts;
expenses

                                                        23

<PAGE>

   
of preparing and mailing  reports to investors and to  governmental  offices and
commissions;  expenses of meetings of investors;  and the investment  management
fees payable to the Manager .

         Under  the  Management  Agreement  . DSI's fee will be  reduced  to the
extent necessary to keep the aggregate annual

operating expenses of the Portfolio  (excluding  brokerage fees and commissions,
interest,  taxes and  extraordinary  expenses)  at no greater  than 0.20% of the
average daily net assets of the Portfolio through [November 1, 1998].

         There  is no  assurance  that  DSI  will  maintain  the fee  reductions
pursuant to the Management  Agreement or the  Sponsorship  Agreement  beyond the
specified date
    

       
   
 .
    

              Description of Shares, Voting Rights and Liabilities

         The  Trust's  Declaration  of Trust  permits  the  Trustees to issue an
unlimited number of full and fractional Shares of Beneficial Interest (par value
$0.01 per share) and to divide or  combine  the shares  into a greater or lesser
number of shares without thereby changing the proportionate beneficial interests
in the Fund. Each share represents an equal  proportionate  interest in the Fund
with each other share.  Shares have no preemptive or conversion  rights.  Shares
when  issued  are fully  paid and  nonassessable,  except  as set  forth  below.
Shareholders  are  entitled  to one vote for each share  held.  The Trust is not
required to hold annual  meetings of shareholders of the Fund but the Trust will
hold special  meetings of  shareholders  of the Fund when in the judgment of the
Trustees it is necessary or desirable to submit matters for a shareholder  vote.
Upon liquidation of the Fund,  shareholders  would be entitled to share pro rata
in the net assets of the Fund available for distribution to shareholders.

                                                        24

<PAGE>

Shareholders  have under certain  circumstances  the right to  communicate  with
other  shareholders in connection with requesting a meeting of shareholders  for
the  purpose of  removing  one or more  Trustees.  Shareholders  also have under
certain  circumstances  the  right to  remove  one or more  Trustees  without  a
meeting.

         The Trust  reserves  the right to create and issue any number of series
of shares, in which case the shares of each series would participate  equally in
the  earnings,  dividends  and  assets  of the  particular  series  (except  for
differences among any classes of shares of any series). Currently, the Trust has
only one series of  shares,  all of which are of the same  class.  The Trust may
establish  additional classes of any series of shares. For example, the Fund may
offer  another  class of  shares  that has  lower  annual  distribution  fees or
shareholder servicing fees. Prior to offering another class of shares, the Trust
would either issue a new prospectus  and statement of additional  information or
amend this  Prospectus  and the Statement of Additional  Information  to reflect
such issuance.

         The Trust is an entity of the type commonly  known as a  "Massachusetts
business trust". Under Massachusetts law,  shareholders of such a business trust
may, under certain circumstances,  be held personally liable as partners for its
obligations.  However,  the risk of a shareholder  incurring  financial  loss on
account of  shareholder  liability  is limited  to  circumstances  in which both
inadequate  insurance  existed  and the  Trust  itself  was  unable  to meet its
obligations.

         The Portfolio,  in which all of the  investable  assets of the Fund are
invested,  is organized as a trust under the laws of the State of New York.  The
Portfolio's  Declaration  of Trust  provides  that the Trust and other  entities
investing in the Portfolio (i.e., other investment companies,  insurance company
separate accounts and common and commingled trust funds) will each be liable for
all  obligations  of the  Portfolio.  However,  the risk of the Trust  incurring
financial loss on account of such liability is limited to circumstances in which
both inadequate  insurance  existed and the Portfolio  itself was unable to meet
its obligations. Accordingly, the Trust's Trustees believe that neither the Fund
nor  its  shareholders  will be  adversely  affected  by  reason  of the  Fund's
investing in the Portfolio. In addition, whenever the Trust is requested to vote
on a fundamental  policy of the Portfolio,  the Trust will hold a meeting of the
Fund's shareholders and will cast its vote as instructed by its shareholders.

         Each  investor  in the  Portfolio,  including  the Fund,  may add to or
reduce its  investment  in the Portfolio on each Fund Business Day. At the close
of each such Fund Business Day, the value of each investor's beneficial interest
in the Portfolio  will be determined by  multiplying  the net asset value of the
Portfolio by the percentage, effective for that day, which

                                                        25

<PAGE>
represents that investor's  share of the aggregate  beneficial  interests in the
Portfolio.  Any  additions  or  withdrawals,  which are to be effected as of the
close of business on that day, will then be effected.  The investor's percentage
of the aggregate  beneficial  interests in the Portfolio will then be recomputed
as the percentage  equal to the fraction (i) the numerator of which is the value
of such  investor's  investment  in the Portfolio as of the close of business on
such day plus or minus,  as the case may be, the amount of any  additions  to or
withdrawals from the investor's  investment in the Portfolio  effected as of the
close  of  business  on such  day,  and  (ii)  the  denominator  of which is the
aggregate  net asset value of the  Portfolio as of the close of business on such
day plus or minus,  as the case may be,  the amount of the net  additions  to or
withdrawals from the aggregate  investments in the Portfolio by all investors in
the Portfolio.  The  percentage so determined  will then be applied to determine
the  value  of the  investor's  interest  in the  Portfolio  as of the  close of
business on the following Fund Business Day.

       

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

   
         The Statement of Additional  Information  filed with the Securities and
Exchange Commission  contains more detailed  information about the Trust and the
Portfolio,   including  information  related  to  (i)  investment  policies  and
restrictions of the Fund and the Portfolio, (ii) the Trustees, officers, Manager
of the Portfolio and Sponsor of the Fund, (iii) portfolio transactions, (iv) the
Fund's shares, including rights and liabilities of shareholders,  (v) additional
performance information,  including the method used to calculate yield and total
rate of return quotations of the Fund, (vi) determination of the net asset value
of shares of the Fund,  and (vii) the audited  financial  statements of the Fund
and the Portfolio at July 31, 1997.
    

                                                        26

<PAGE>

   
Domini Institutional Social Equity Fund
[11 West 25th Street
 New York, NY 10010]

Portfolio Investment                  Custodian: Investors Bank &
 Manager and Fund Sponsor             Trust Company
Domini  Social                        200 Clarendon Street
    Investments LLC                   Boston, MA  02116
[11 West 25th Street
 New York, NY 100                     Auditors:
(___) ___-____                        KPMG Peat Marwick   LLP
                                      99 High Street
Portfolio Investment                  Boston, MA 02110
   
Submanager:
    
Mellon Equity   Associates            Legal Counsel:
500 Grant Street                      Bingham, Dana &   Gould LLP
Suite 3700                            150 Federal Street
Pittsburgh, PA 15258-0001             Boston, MA 02110

   
                                      Transfer Agent:
Distributor:                          Fundamental   Shareholder
Signature Broker-Dealer Service, Inc. Services, Inc.
6 St. James Avenue                    90 Washington Street
Boston, MA 02116                      New York, NY 10006
(800) 762-6814                        (800) 782-4165
    





<PAGE>



   
     Domini    Institutional   Social   Equity   Fund   Investing   for   GoodSM
- ---------------------------- November 28, 1997
    

<PAGE>

   
DSI267G
    



                                        STATEMENT OF ADDITIONAL INFORMATION

   
                                           NOVEMBER  28, 1997
    

                                      DOMINI INSTITUTIONAL SOCIAL EQUITY FUND



Table of Contents
           Page

1. The Fund............................................................. 2

2. Investment Objective, Policies and Restrictions.......................2

   
3. Performance Information..............................................[]
    

4. Determination of Net Asset Value; Valuation of Portfolio
   
Securities..............................................................[]

5. Management of the Fund and the Portfolio.............................[]

6. Independent Auditors.................................................[]

7. Taxation.............................................................[]

8. Portfolio Transactions and Brokerage Commissions.....................[]

9. Description of Shares, Voting Rights and Liabilities.................[]

10. Financial Statements................................................[]
    


DOMINI INSTITUTIONAL SOCIAL EQUITY FUND
   
[11 West 25th
Street, New York, New York 10010]
[(800) 762-6814]

         This Statement of Additional  Information sets forth  information which
may be of interest to  investors  but which is not  necessarily  included in the
Fund's  Prospectus  dated November 28, 1997, as amended from time to time.  This
Statement  of  Additional  Information  should be read in  conjunction  with the
Prospectus,  a copy of which may be obtained by an  investor  without  charge by
contacting Signature  Broker-Dealer Services,  Inc., the Fund's distributor,  at
(800) 762-6814.
    

         This  Statement of Additional  Information  is NOT a prospectus  and is
authorized  for  distribution  to  prospective  investors  only if  preceded  or
accompanied  by an effective  prospectus  and should be read only in conjunction
with such prospectus.


<PAGE>



                                   1. THE FUND

         The Domini  Institutional Social Equity Fund (the "Fund") is a no-load,
diversified,  open-end management  investment  company.  The Fund is a series of
shares of beneficial interest of Domini Institutional Trust (the "Trust"), which
was  organized  as a  business  trust  under  the  laws of the  Commonwealth  of
Massachusetts  on April 1, 1996. The Trust offers to buy back (redeem) shares of
the Fund from its  shareholders  at any time at net asset value.  References  in
this Statement of Additional  Information to the "Prospectus" are to the current
Prospectus of the Fund, as amended or supplemented from time to time.

   
         Domini  Social   Investments   LLC  ("DSI")  the  Fund's  sponsor  (the
"Sponsor"),  supervises  the overall  administration  of the Fund.  The Board of
Trustees  provides broad supervision over the affairs of the Fund. Shares of the
Fund  are  continuously   sold  by  Signature   Broker-Dealer   Services,   Inc.
("Signature"),  the Fund's distributor (the "Distributor").  The minimum initial
investment is $2,000,000.  An investor should obtain from the  Distributor,  and
should read in conjunction  with the  Prospectus,  the materials  describing the
procedures under which Fund shares may be purchased and redeemed.

         The Fund seeks to achieve its investment objective by investing all its
assets in the Domini Social Index  Portfolio  (the  "Portfolio"),  a diversified
open-end management  investment company having the same investment  objective as
the Fund. DSI is the  Portfolio's  investment  manager (the  "Manager").  Mellon
Equity  Associates  ("Mellon Equity") is the Portfolio's  investment  submanager
(the "Submanager"). Kinder, Lydenberg, Domini & Co., Inc. ("KLD") determines the
composition  of the  Domini 400  Social  IndexSM.  The  Submanager  manages  the
investments of the Portfolio from day to day in accordance  with the Portfolio's
investment  objective and policies.  "DominiSM" and "Domini 400 Social  IndexSM"
are service marks of KLD.
    

               2. INVESTMENT OBJECTIVE, POLICIES AND RESTRICTIONS

                              Investment Objective

   
         The  investment  objective  of the Fund is to provide its  shareholders
with long-term total return  (reflecting both dividend and price  performance of
the Fund) which  corresponds to the performance of the Domini 400 Social IndexSM
(sometimes  referred to herein as the "Domini  Social Index" or "Index").  There
can,  of course,  be no  assurance  that the Fund will  achieve  its  investment
objective.  The investment objective of the Fund may be changed without approval
by the Fund's shareholders.
    

                                                         2

<PAGE>




                               Investment Policies

         The Trust  seeks to achieve  the  investment  objective  of the Fund by
investing all of the Fund's  investable  assets in the Portfolio,  which has the
same  investment  objective  as the  Fund.  The Trust may  withdraw  the  Fund's
investment  in the  Portfolio  at any time if the Board of Trustees of the Trust
determines  that it is in the best interests of the Fund to do so. Upon any such
withdrawal,  the Board of Trustees  would  consider  what action might be taken,
including  the  investment of all the  investable  assets of the Fund in another
pooled  investment  entity having the same investment  objective as the Fund, or
the retaining of an investment adviser to manage the Fund's assets in accordance
with the investment policies described below with respect to the Portfolio.  The
approval of the Fund's  shareholders  would not be required to change any of the
Fund's investment policies.

         The following  supplements the  information  concerning the Portfolio's
investment  policies  contained  in the  Prospectus  and should  only be read in
conjunction therewith.

         A company  which is not included in the Standard & Poor's 500 Composite
Stock Price Index (the "S&P 500") may be  included  in the Domini  Social  Index
primarily in order to afford  representation to an industrial sector which would
otherwise  be  under-represented  in the Index.  Because of the social  criteria
applied in the selection of stocks comprising the Domini Social Index,  industry
sector  weighting  in the  Domini  Social  Index  may vary  materially  from the
industry weightings in other stock indices, including the S&P 500.

         The  Portfolio  does  not  purchase   securities  which  the  Portfolio
believes,  at the time of  purchase,  will be subject to  exchange  controls  or
foreign withholding taxes; however, there can be no assurance that such laws may
not become  applicable to certain of the Portfolio's  investments.  In the event
unforeseen  exchange  controls or foreign  withholding  taxes are  imposed  with
respect to any of the Portfolio's  investments,  the effect may be to reduce the
income received by the Portfolio on such investments.

         Although  neither the Fund nor the Portfolio has any current  intention
to do so,  the Fund and the  Portfolio  may  invest in  securities  which may be
resold pursuant to Rule 144A under the Securities Act of 1933 (the "1933 Act").

         It is a  fundamental  policy of the Portfolio and the Fund that neither
the  Portfolio  nor the Fund may invest more than 25% of the total assets of the
Portfolio or the Fund, respectively, in any one industry, although the Fund will
invest  all of its  assets in the  Portfolio,  and the  Portfolio  may and would
invest  more than 25% of its assets in an  industry  if stocks in that  industry
were to comprise more than 25% of the Domini Social

                                                         3

<PAGE>



Index. Based on the current  composition of the Index, this is considered highly
unlikely.  If the Portfolio  were to  concentrate  its  investments  in a single
industry,  the  Portfolio and the Fund would be more  susceptible  to any single
economic,  political or regulatory  occurrence than would be another  investment
company which was not so concentrated.

         Loans of Securities:  The Portfolio may lend its securities to brokers,
dealers  and  financial  institutions,  provided  that (1) the  loan is  secured
continuously by collateral,  consisting of U.S. Government securities or cash or
letters of credit,  which is marked to the market daily to ensure that each loan
is fully collateralized at all times; (2) the Portfolio may at any time call the
loan and obtain the return of the securities  loaned within three business days;
(3) the Portfolio  will receive any interest or dividends paid on the securities
loaned;  and (4) the aggregate market value of securities loaned will not at any
time exceed 30% of the total assets of the Portfolio.

         The Portfolio will earn income for lending its securities  because cash
collateral  pursuant to these loans will be invested in short-term  money market
instruments.  Loans of  securities  involve a risk that the borrower may fail to
return the securities or may fail to provide additional collateral.

   
         In connection with lending securities, the Portfolio may pay reasonable
finders,  administrative  and  custodial  fees. No such fees will be paid to any
person if it or any of its  affiliates is  affiliated  with the  Portfolio,  the
Manager or the Submanager.
    

         Although the Portfolio  reserves the right to lend its  securities,  it
has no current intention of doing so in the foreseeable future.

         Risk Factors Involved in Option  Contracts:  Although it has no current
intention  to do so,  the  Portfolio  may  in  the  future  enter  into  certain
transactions  in stock  options  for the  purpose  of hedging  against  possible
increases in the value of  securities  which are expected to be purchased by the
Portfolio or possible  declines in the value of securities which are expected to
be sold by the Portfolio.  Generally,  the Portfolio  would only enter into such
transactions  on a  short-term  basis  pending  readjustment  of its holdings of
underlying stocks.

         The  purchase of an option on an equity  security  provides  the holder
with the right, but not the obligation,  to purchase the underlying security, in
the case of a call option, or to sell the underlying security,  in the case of a
put option,  for a fixed price at any time up to a stated  expiration  date. The
holder  is  required  to pay a  non-refundable  premium,  which  represents  the
purchase price of the option. The holder of an option can lose the entire amount
of the premium,  plus related  transaction costs, but not more. Upon exercise of
the option, the holder is

                                                         4

<PAGE>



required to pay the purchase price of the  underlying  security in the case of a
call option,  or deliver the  security in return for the  purchase  price in the
case of a put option.

         Prior to exercise or expiration,  an option  position may be terminated
only by entering into a closing  purchase or sale  transaction.  This requires a
secondary   market  on  the  exchange  on  which  the  position  was  originally
established.  While the  Portfolio  would  establish an option  position only if
there  appears  to be a  liquid  secondary  market  therefor,  there  can  be no
assurance  that such a market will exist for any particular  option  contract at
any specific time. In that event, it may not be possible to close out a position
held by the Portfolio,  and the Portfolio  could be required to purchase or sell
the instrument  underlying an option,  make or receive a cash settlement or meet
ongoing  variation  margin  requirements.  The  inability  to close  out  option
positions  also  could  have  an  adverse  impact  on  the  Portfolio's  ability
effectively to hedge its portfolio.

   
         Each exchange on which option  contracts  are traded has  established a
number of  limitations  governing the maximum  number of positions  which may be
held by a trader,  whether  acting alone or in concert with others.  The Manager
does not believe that these  trading and  position  limits would have an adverse
impact on the possible use of hedging strategies by the Portfolio.



         The approval of the Fund and of the other investors in the Portfolio is
not required to change the  investment  objective or any of the  non-fundamental
investment  policies  discussed  above,   including  those  concerning  security
transactions.
    

                             Investment Restrictions

         The Fund and the  Portfolio  have each adopted the  following  policies
which may not be changed  without  approval  by holders  of a  "majority  of the
outstanding shares" of the Fund or the Portfolio, respectively, which as used in
this Statement of Additional Information means the vote of the lesser of (i) 67%
or more of the  outstanding  "voting  securities"  of the Fund or the Portfolio,
respectively,  present  at a  meeting,  if the  holders  of more than 50% of the
outstanding "voting securities" of the Fund or the Portfolio,  respectively, are
present  or  represented  by proxy,  or (ii)  more  than 50% of the  outstanding
"voting securities" of the Fund or the Portfolio, respectively. The term "voting
securities"  as used in this paragraph has the same meaning as in the Investment
Company Act of 1940, as amended (the "1940 Act").

         Except as described below, whenever the Trust is requested to vote on a
change in the investment  restrictions  of the Portfolio,  the Trust will hold a
meeting of the shareholders of

                                                         5

<PAGE>



the Fund and will cast its vote  proportionately  as  instructed  by the  Fund's
shareholders.   However,   subject  to  applicable   statutory  and   regulatory
requirements,  the Trust  would not request a vote of  shareholders  of the Fund
with respect to (a) any proposal relating to the Portfolio,  which proposal,  if
made with respect to the Fund, would not require the vote of the shareholders of
the Fund, or (b) any proposal with respect to the Portfolio that is identical in
all  material  respects  to a proposal  that has  previously  been  approved  by
shareholders  of the Fund.  Any proposal  submitted to holders in the Portfolio,
and that is not  required  to be voted on by  shareholders  of the  Fund,  would
nevertheless be voted on by the Trustees of the Trust.

         Neither the Fund nor the Portfolio may:

         (1) borrow money,  except that as a temporary measure for extraordinary
or emergency  purposes either the Fund or the Portfolio may borrow an amount not
to  exceed  1/3 of the  current  value  of the  net  assets  of the  Fund or the
Portfolio,  respectively,  including the amount borrowed (moreover,  neither the
Fund  nor the  Portfolio  may  purchase  any  securities  at any  time at  which
borrowings  exceed  5% of the  total  assets  of  the  Fund  or  the  Portfolio,
respectively,  taken in each  case at market  value)  (it is  intended  that the
Portfolio  would borrow money only from banks and only to  accommodate  requests
for the withdrawal of all or a portion of a beneficial interest in the Portfolio
while effecting an orderly  liquidation of securities);  for additional  related
restrictions,  see  clause  (i) under  the  caption  "Non-Fundamental  State and
Federal Restrictions" below;

         (2) purchase  any  security or evidence of interest  therein on margin,
except that either the Fund or the Portfolio may obtain such  short-term  credit
as may be necessary for the  clearance of purchases and sales of securities  and
except  that  either  the Fund or the  Portfolio  may make  deposits  of initial
deposit and variation margin in connection with the purchase, ownership, holding
or sale of options;

         (3) write any put or call option or any combination  thereof,  provided
that this shall not  prevent  (i) the  purchase,  ownership,  holding or sale of
warrants  where the  grantor of the  warrants  is the  issuer of the  underlying
securities,  or (ii) the  purchase,  ownership,  holding  or sale of  options on
securities;

         (4) underwrite securities issued by other persons, except that the Fund
may invest all or any portion of its assets in the Portfolio and except  insofar
as either the Fund or the Portfolio  may  technically  be deemed an  underwriter
under the 1933 Act in selling a security;

         (5) make loans to other  persons  except  (a)  through  the  lending of
securities  held by either the Fund or the  Portfolio and provided that any such
loans not exceed 30% of its total assets  (taken in each case at market  value),
or (b) through the

                                                         6

<PAGE>



use of  repurchase  agreements  or the purchase of  short-term  obligations  and
provided that not more than 10% of its net assets will be invested in repurchase
agreements   maturing  in  more  than  seven  days;   for   additional   related
restrictions, see paragraph (6) immediately following;

         (6) invest in  securities  which are  subject  to legal or  contractual
restrictions  on resale (other than repurchase  agreements  maturing in not more
than seven days and other than  securities  which may be resold pursuant to Rule
144A under the 1933 Act if the Board of Trustees determines that a liquid market
exists for such  securities) if, as a result  thereof,  more than 10% of its net
assets  (taken at  market  value)  would be so  invested  (including  repurchase
agreements  maturing in more than seven  days),  except that the Fund may invest
all or any portion of its assets in the Portfolio;

         (7)  purchase  or  sell  real  estate  (including  limited  partnership
interests but excluding securities secured by real estate or interests therein),
interests in oil, gas or mineral leases,  commodities or commodity  contracts in
the ordinary  course of business (the Fund and Portfolio  reserve the freedom of
action to hold and to sell real estate  acquired as a result of the ownership of
securities by the Fund or the Portfolio);

         (8) make short sales of securities or maintain a short position, unless
at all  times  when a short  position  is open  the  Fund or the  Portfolio,  as
applicable,  owns an equal amount of such  securities or securities  convertible
into  or  exchangeable,  without  payment  of  any  further  consideration,  for
securities  of the same issue as, and equal in amount  to, the  securities  sold
short,  and  unless  not  more  than 5% of the  Fund's  or the  Portfolio's,  as
applicable,  net  assets  (taken  in  each  case  at  market  value)  is held as
collateral  for such sales at any one time (it is the present  intention  of the
Portfolio  and the Fund to make such  sales only for the  purpose  of  deferring
realization of gain or loss for federal income tax purposes);

         (9) issue any senior security (as that term is defined in the 1940 Act)
if such  issuance is  specifically  prohibited  by the 1940 Act or the rules and
regulations  promulgated  thereunder,  except as  appropriate to evidence a debt
incurred without violating paragraph (1) above;

         (10) as to 75% of its assets, purchase securities of any issuer if such
purchase at the time thereof would cause more than 5% of the  Portfolio's or the
Fund's,  as  applicable,  assets  (taken at market  value) to be invested in the
securities  of such  issuer  (other than  securities  or  obligations  issued or
guaranteed by the United States or any agency or  instrumentality  of the United
States),  except that for purposes of this  restriction  the issuer of an option
shall not be deemed to be the issuer of the  security or  securities  underlying
such  contract  and except  that the Fund may  invest all or any  portion of its
assets in the Portfolio; or

                                                         7

<PAGE>




         (11) invest more than 25% of its assets in any one industry  unless the
stocks in a single  industry were to comprise more than 25% of the Domini Social
Index, in which case the Portfolio or the Fund, as applicable,  will invest more
than 25% of its assets in that industry, and except that the Fund may invest all
of its assets in the Portfolio.

         Non-Fundamental State and Federal Restrictions: In order to comply with
certain state and federal statutes and regulatory policies, neither the Fund nor
the Portfolio will as a matter of operating policy:

(i) borrow  money for any  purpose  in excess of 10% of the total  assets of the
Fund or the  Portfolio,  respectively  (taken in each  case at cost)  (moreover,
neither the Fund nor the Portfolio  will purchase any  securities at any time at
which borrowings exceed 5% of its total assets (taken at market value)),

(ii) pledge, mortgage or hypothecate for any purpose in excess of 10% of the net
assets of the Fund or the Portfolio,  respectively (taken in each case at market
value), provided that collateral arrangements with respect to options, including
deposits of initial deposit and variation margin, are not considered a pledge of
assets for purposes of this restriction,

(iii) sell any security  which it does not own unless by virtue of its ownership
of other  securities  it has at the time of sale a right to  obtain  securities,
without payment of further  consideration,  equivalent in kind and amount to the
securities sold, and provided that if such right is conditional the sale is made
upon the same conditions,

     (iv) invest for the purpose of  exercising  control or  management,  except
that all of the assets of the Fund may be invested in the Portfolio,

(v) purchase securities issued by any registered investment company, except that
the Fund may invest all its assets in the  Portfolio  and except by  purchase in
the open market  where no  commission  or profit to a sponsor or dealer  results
from such purchase other than the customary broker's commission,  or except when
such purchase,  though not made in the open market,  is part of a plan of merger
or consolidation;  provided,  however, that (except for the Fund's investment in
the  Portfolio)  the Fund and the Portfolio  will not purchase the securities of
any  registered  investment  company if such  purchase at the time thereof would
cause  more  than  10%  of  the  total  assets  of the  Fund  or the  Portfolio,
respectively  (taken at the  greater of cost or market  value) to be invested in
the  securities  of such issuers or would cause more than 3% of the  outstanding
voting  securities  of any such issuer to be held by the Fund or the  Portfolio,
respectively;  and provided,  further, that (except for the Fund's investment in
the Portfolio) the Fund and the Portfolio shall not

                                                         8

<PAGE>



purchase securities issued by any open-end investment company,

(vi)  invest  more  than 10% of the net  assets  of the  Fund or the  Portfolio,
respectively  (taken at the  greater  of cost or market  value),  in  securities
(excluding Rule 144A securities) that are restricted as to resale under the 1933
Act,

(vii)  invest  more  than 15% of the net  assets  of the Fund or the  Portfolio,
respectively  (taken at the greater of cost or market value),  (a) in securities
that  are  restricted  as to  resale  by  the  1933  Act  (including  Rule  144A
securities),  and (b) in securities that are issued by issuers which  (including
the period of operation of any predecessor company or unconditional guarantor of
such issuer) have been in operation  less than three years,  provided,  however,
that  no  more  than  5% of the  net  assets  of  the  Fund  or  the  Portfolio,
respectively,  are invested in  securities  issued by issuers  which  (including
predecessors) have been in operation less than three years,

(viii) purchase puts, calls,  straddles,  spreads and any combination thereof if
the value of its aggregate  investment in such  securities will exceed 5% of the
Funds or the Portfolio's total assets at the time of such purchase,

(ix)  purchase  securities  of any issuer if such  purchase at the time  thereof
would cause it to hold more than 10% of any class of  securities of such issuer,
for which purposes all  indebtedness of an issuer shall be deemed a single class
and all preferred stock of an issuer shall be deemed a single class, except that
option contracts shall not be subject to this  restriction,  and except that the
Fund may invest all or any portion of its assets in the Portfolio,

   
(x) purchase or retain any securities issued by an issuer any of whose officers,
directors,  trustees or security holders is an officer or Trustee of the Fund or
the  Portfolio,  as the case may be, or is an officer or director of the Manager
or the Submanager, if after the purchase of the securities of such issuer by the
Fund or the  Portfolio,  as the case may be,  one or more of such  persons  owns
beneficially more than 1/2 of 1% of the shares or securities, or both, all taken
at market value, of such issuer,  and such persons owning more than 1/2 of 1% of
such shares or securities  together own beneficially more than 5% of such shares
or  securities,  or both,  all taken at market  value,  except that the Fund may
invest all or any portion of its assets in the Portfolio,
    

(xi) invest more than 5% of the Fund's or the Portfolio's net assets in warrants
(valued at the lower of cost or  market),  but not more than 2% of the Fund's or
the  Portfolio's  net assets may be invested  in warrants  not listed on the New
York Stock Exchange Inc. ("NYSE") or the American Stock Exchange, or

(xii) make short sales of securities or maintain a short

                                                         9

<PAGE>



position,  unless at all times when a short  position  is open,  the Fund or the
Portfolio owns an equal amount of such securities or securities convertible into
or exchangeable, without payment of any further consideration, for securities of
the same issue and equal in amount to the securities sold short,  and unless not
more than 10% of the Fund's or the Portfolio's,  respectively, net assets (taken
at market value) is represented by such  securities,  or securities  convertible
into or exchangeable for such securities,  at any one time (neither the Fund nor
the Portfolio has any current intention to engage in short selling).

   
        Restrictions  (i) through (xii) are not  fundamental  and may be changed
with respect to the Fund by the Fund without approval by the Fund's shareholders
or with respect to the  Portfolio by the  Portfolio  without the approval of the
Fund or its other investors.  While the Fund expects to reject any order that is
not an exempt  transaction  under the relevant state  securities  laws, the Fund
will  comply with the state  securities  laws and  regulations  of all states in
which it is registered. The Portfolio will comply with the applicable investment
limitations  found in the state securities laws and regulations of all states in
which the Fund is registered.
    

        Percentage   Restrictions:   If  a  percentage   restriction  or  rating
restriction  on investment or  utilization of assets set forth above or referred
to in the  Prospectus  is adhered to at the time an investment is made or assets
are so utilized,  a later  change in  percentage  resulting  from changes in the
value of the  securities  held by the Fund or the Portfolio or a later change in
the  rating  of a  security  held  by the  Fund  or the  Portfolio  will  not be
considered  a  violation  of policy;  provided  that if at any time the ratio of
borrowings  of the Fund or the  Portfolio  to the net asset value of the Fund or
the Portfolio, respectively, exceeds the ratio permitted by Section 18(f) of the
1940 Act, the Fund or the Portfolio as the case may be, will take the corrective
action required by Section 18(f).

                                            3.  PERFORMANCE INFORMATION

        The Trust will  calculate the Fund's total rate of return for any period
by (a)  dividing (i) the sum of the net asset value per share on the last day of
the  period  and the net asset  value per share on the last day of the period of
shares  purchasable with dividends and capital gains declared during such period
with respect to a share held at the beginning of such period and with respect to
shares  purchased with such dividends and capital gains  distributions,  by (ii)
the public offering price per share (i.e.,  net asset value) on the first day of
such period, and (b) subtracting 1 from the result. Any annualized total rate of
return  quotation will be calculated by (x) adding 1 to the period total rate of
return  quotation  calculated  above,  (y) raising  such sum to a power which is
equal to 365 divided by the number of days in such period, and (z) subtracting 1
from the result.


                                                        10

<PAGE>



        Any current "yield" quotation of the Fund shall consist of an annualized
historical  yield,  carried at least to the nearest  hundredth  of one  percent,
based on a thirty  calendar day period and shall be calculated by (a) raising to
the sixth power the sum of 1 plus the  quotient  obtained by dividing the Fund's
net  investment  income  earned  during the period by the product of the average
daily  number of shares  outstanding  during the period  that were  entitled  to
receive  dividends and the maximum  offering  price per share on the last day of
the period, (b) subtracting 1 from the result, and (c) multiplying the result by
2.

        Total rate of return and yield  information  with  respect to the Domini
Social  Index  will be  computed  in the same  fashion  as set forth  above with
respect to the Fund,  except that for purposes of this computation an investment
will be assumed to have been made in a portfolio consisting of all of the stocks
comprising the Domini Social Index weighted in accordance with the weightings of
the stocks  comprising the Index.  Performance  information  with respect to the
Domini Social Index will not take into account  brokerage  commission  and other
transaction costs which will be incurred by the Portfolio.

   
        Historical  performance  information  for any period or portion  thereof
prior to the  establishment of the Fund will be that of the Portfolio,  adjusted
to assume  that all  charges,  expenses  and fees of the Fund and the  Portfolio
which are presently in effect were deducted during such periods, as permitted by
applicable SEC staff interpretations.
    

       
           4. DETERMINATION OF NET ASSET VALUE; VALUATION OF PORTFOLIO
                                   SECURITIES

   
        The net asset value of each share of the Fund is determined  each day on
which the NYSE is open for trading  ("Fund  Business  Day").  (As of the date of
this  Statement of  Additional  Information,  the NYSE is open for trading every
weekday except for the following  holidays:  New Year's Day, Martin Luther King,
Jr. Day,  Presidents' Day, Good Friday,  Memorial Day,  Independence  Day, Labor
Day,  Thanksgiving Day and Christmas Day). This determination of net asset value
of shares of the Fund is made once  during  each such day as of the close of the
NYSE by dividing the value of the Fund's net assets (i.e., the value of its
    

                                                        11

<PAGE>



investment in the Portfolio and any other assets less its liabilities, including
expenses payable or accrued) by the number of shares outstanding at the time the
determination is made. Purchases and redemptions will be effected at the time of
determination  of net asset value next  following the receipt of any purchase or
redemption  order deemed to be in good order.  See "Purchases and Redemptions of
Shares" in the Prospectus.

        The  value  of the  Portfolio's  net  assets  (i.e.,  the  value  of its
securities and other assets less its liabilities,  including expenses payable or
accrued)  is  determined  at the  same  time  and on the  same  day as the  Fund
determines  its net asset  value per  share.  The net asset  value of the Fund's
investment  in the  Portfolio is equal to the Fund's pro rata share of the total
investment of the Fund and of other  investors in the Portfolio  less the Fund's
pro rata share of the  Portfolio's  liabilities.  Equity  securities held by the
Portfolio  are valued at the last sale price on the  exchange  on which they are
primarily traded or on the NASDAQ system for unlisted national market issues, or
at the last quoted bid price for  securities in which there were no sales during
the day or for unlisted  securities  not reported on the NASDAQ  system.  If the
Portfolio purchases option contracts,  such option contracts which are traded on
commodities or securities  exchanges are normally valued at the settlement price
on the exchange on which they are traded.  Short-term obligations with remaining
maturities  of less  than  sixty  days  are  valued  at  amortized  cost,  which
constitutes  fair value as determined by the Board of Trustees of the Portfolio.
Portfolio   securities   (other  than  short-term   obligations  with  remaining
maturities  of less than sixty days) for which there are no such  quotations  or
valuations  are  valued at fair value as  determined  in good faith by or at the
direction of the Portfolio's Board of Trustees.

        A  determination  of value used in calculating net asset value must be a
fair value determination made in good faith utilizing procedures approved by the
Portfolio's  Board of Trustees.  While no single standard for  determining  fair
value  exists,  as a general  rule,  the current fair value of a security  would
appear to be the amount  which the  Portfolio  could  expect to receive upon its
current sale. Some, but not necessarily all, of the general factors which may be
considered in determining  fair value include:  (i) the  fundamental  analytical
data relating to the investment; (ii) the nature and duration of restrictions on
disposition  of the  securities;  and (iii) an  evaluation  of the forces  which
influence the market in which these  securities are purchased and sold.  Without
limiting or including  all of the specific  factors  which may be  considered in
determining fair value, some of the specific factors include:  type of security,
financial  statements of the issuer, cost at date of purchase,  size of holding,
discount from market value,  value of unrestricted  securities of the same class
at the time of purchase, special reports prepared by analysts, information as to
any  transactions  or offers with respect to the  security,  existence of merger
proposals or tender offers affecting the

                                                        12

<PAGE>



security, price and extent of public trading in similar securities of the issuer
or comparable companies, and other relevant matters.

        Interest  income on  short-term  obligations  held by the  Portfolio  is
determined on the basis of interest accrued less amortization of premium.

        Each investor in the Portfolio, including the Fund, may add to or reduce
its  investment in the Portfolio on each Fund Business Day. At the close of each
such business day, the value of each  investor's  interest in the Portfolio will
be  determined  by  multiplying  the net  asset  value of the  Portfolio  by the
percentage  representing  that  investor's  share  of the  aggregate  beneficial
interests in the Portfolio effective for that day. Any additions or withdrawals,
which are to be effected  as of the close of business on that day,  will then be
effected. The investor's percentage of the aggregate beneficial interests in the
Portfolio will then be  re-computed as the percentage  equal to the fraction (i)
the  numerator  of  which  is the  value of such  investor's  investment  in the
Portfolio as of the close of business on such day plus or minus, as the case may
be, the amount of any additions to or withdrawals from the investor's investment
in the Portfolio  effected as of the close of business on such day, and (ii) the
denominator of which is the aggregate net asset value of the Portfolio as of the
close of business  on such day plus or minus,  as the case may be, the amount of
the net  additions  to or  withdrawals  from the  aggregate  investments  in the
Portfolio by all investors in the Portfolio.  The percentage so determined  will
then be  applied  to  determine  the  value of the  investor's  interest  in the
Portfolio as of the close of business on the following Fund Business Day.

                  5. MANAGEMENT OF THE TRUST AND THE PORTFOLIO

   
        The  Trustees  and  officers  of the Trust and the  Portfolio  and their
principal  occupations  during  the past five years are set forth  below.  Their
titles may have varied during that period. Each Trustee and officer of the Trust
also  serves  the  Portfolio  in the same  capacity.  Asterisks  indicate  those
Trustees and officers who are "interested  persons" (as defined in the 1940 Act)
of the Trust.  Unless otherwise indicated below, the address of each Trustee and
officer is [11 West 25th Street, New York, New York 10010].

                     Trustees of the Trust and the Portfolio

[EMILY W. CARD -- 1223 Wilshire Boulevard, No. 334, Santa Monica,
California 90403; Attorney; President, The Card Group, Inc;
Trustee,  Domini Social Equity Fund.  Her date of birth
is May 8, 1942.]

     AMY L. DOMINI* -- 230 Congress Street, Boston,  Massachusetts 02110; Chair,
President and Trustee of the Trust ,
    

                                                        13

<PAGE>



   
     Portfolio and Domini Social Equity Fund; Manager of DSI; Officer of Kinder,
Lydenberg,  Domini & Co., Inc.;  Private  Trustee,  Loring,  Wolcott & Coolidge;
Trustee


     , Episcopal Church Pension Fund; Member, Governing Board, Interfaith Center
on Corporate Responsibility. Her date of birth is January 15, 1950.

ALLEN M. MAYES -- P.O. Box 21222, Beaumont, Texas 77720; Trustee , Domini Social
Equity Fund;  Retired Senior Associate General Secretary of the General Board of
Pensions of the United Methodist Church, Director of Ministerial Services, Texas
Annual  Conference,  The United Methodist Church;  Former Member of the Board of
Directors  of  Investor  Responsibility  Research  Center;  Member  of  Board of
Trustees of Wiley College. His date of birth is September 20, 1920.

WILLIAM C.  OSBORN -- 115  Buckminster  Road,  Brookline,  Massachusetts  02146;
Manager,  Venture  Investment  Management  Company LLC;  Trustee,  Domini Social
Equity Fund;  Vice  President and General  Manager,  TravElectric  Services Corp
(prior to 1995);  President,  Environmental  [Packaging]  Technologies (prior to
1993; Director, Evergreen Solar, Inc; Director, Conservation Services Group. His
date of birth is July 7, 1944.

     [KAREN PAUL -- 4050 Park Avenue,  Miami, Florida 33133;  Associate Dean and
Professor of Business Environment,  Florida International  University;  Trustee,
Domini Social Equity Fund. Her date of birth is September 23, 1944.]

TIMOTHY  SMITH -- 475  Riverside  Drive,  New York,  New York  10115;  Executive
Director , Interfaith Center on Corporate  Responsibility;  Trustee, Calvert New
Africa Fund; Trustee,  Domini Social Equity Fund. His date of birth is September
15, 1943.

FREDERICK C. WILLIAMSON -- Five Roger Williams Green,  Providence,  Rhode Island
02904;  Treasurer and Trustee , RIGHA (charitable  foundation  supporting health
care  needs);  Chairman,  Rhode  Island  Historical  Preservation  and  Heritage
Commission ; Trustee,  National  Parks and  Conservation  Commission;  Trustee ,
Domini Social Equity Fund. His date of
    

                                                        14

<PAGE>



   
birth is September 20, 1914.

        Each  Trustee is paid an annual fee as follows for serving as Trustee of
the  Trust  and  the  Portfolio  and is  reimbursed  for  expenses  incurred  in
connection with service as a Trustee.  The compensation paid to the Trustees for
the fiscal year ended July 31, 1997 is set forth  below.  The  Trustees may hold
various other directorships unrelated to the Trust or Portfolio.
    
                                       15

<PAGE>
<TABLE>
<CAPTION>
                                                                                                             
                                                                               
                                                              PENSION OR
                                                              RETIREMENT                            TOTAL
                                                              BENEFITS                              COMPENSATION
                                       AGGREGATE              ACCRUED                ANNUAL         FROM THE 
                                       COMPENSATION           PART OF                BENEFITS       FUND, PORTFOLION AND 
                                       FROM THE               TRUST                  UPON           DOMINI SOCIAL
                                       TRUST                  EXPENSES               RETIREMENT     EQUITY FUND
<S>                                     <C>                      <C>                 <C>            <C>
Amy  L. Domini*,                       None                   None                  None             None
Chair, President and Trustee

[Emily W.                              $1,600                 None                  None            $1,805]
Card, Trustee

[Karen Paul, Trustee                   $1,800                 None                  None            $2,005  ]
                                       
William C. Osborn, Trustee             $1,800                 None                  None            $2,005
     
[Allen M. Mayes, Trustee                $0                    None                  None            $2,400]

Timothy Smith, Trustee                 $55                    None                  None            $2,455

Frederick C. Williamson                $55                    None                  None            $2,455
</TABLE>
         16

    <PAGE>
                                                     Officers
       
   
 PETER D.  KINDER* -- Vice President of the Trust and
the Portfolio;  President of Kinder, Lydenberg, Domini &
Co., Inc.; [   ] Domini Social Investments LLC (since 
 1997).

 STEVEN D.  LYDENBERG* -- Vice President of the
Trust and the Portfolio; Director of Research of Kinder,
Lydenberg, Domini & Co., Inc.; [   ] Domini Social Investments
LLC (since  1997).

DAVID P. WIEDER* -- Vice President of the Trust and the Portfolio  (since 1997);
[ ] Domini  Social  Investments  LLC  (since  1997);  President  of  Fundamental
Shareholder Services, Inc.
    

       
   
SIGWARD M. MOSER* -- Vice President of the Trust and the Portfolio (since 1997);
President of Communications  House  International,  Inc.;  Director of Financial
Communications Society; [ ] Domini Social Investments LLC (since
    

                                                        17

<PAGE>



   
1997).

CAROLE M. LAIBLE* -- Secretary and Treasurer of the Trust and the
Portfolio  (since 1997);  Compliance  Officer of Domini Social  Investments  LLC
(since 1997); [ ] Fundamental Shareholder Services, Inc.

         As of September 1, 1997, all Trustees and officers of the Trust and the
Portfolio  as a group  owned  less  than 1% of the  Fund's  outstanding  shares,
including  shares  owned by  Signature.  Shareholders  owning 25% or more of the
outstanding  shares of the Fund may take  actions  without  the  approval of any
other  investor in the Fund. As of September 8, 1997 the following  shareholders
of record owned 5% or more of the outstanding shares of the Fund:

Name and Address of                                           Number of Shares
Percent of
Shareholder                                                   Owned
Shares

Jessie Smith Noyes Foundation, Inc.                           1,013,616.184
19.7%
Attn:  Nicholas Jacangelo
c/o McGrath, Doyle & Phair
150 Broadway - Suite 1703
New York, NY 10038

Compton Foundation, Inc.                                      693,481.276
13.5%
545 Middlefield Road - Suite 178
Menlo Park, CA 94025

Home Missioners of America                                    652,755.950
12.7%
P.O. Box 465618
Cincinnati, OH 45246-5618

M&I Trust Co., TTEE                                           420,620.015
8.2%
Attn:  Mutual Funds
1000 N. Water Street
Milwaukee, WI 53202

Boston Harbor Trust Co. NA Nominee                            380,259.687
7.4%
Attn:  Mutual Funds
100 Federal Street 37th Floor
Boston, MA 02110

Wendel and Co. 725000                                         331,941.431
6.5%
The Bank of New York
Mutual Fund/Reorg. Dept.
P.O. Box 1066-Wall Street Station
New York, NY 10268
    


                                                        18

<PAGE>



   
California-Nevada                                             277,757.041
5.4%
Untied Methodist Foundation
1579 Farmers Lane #283
Santa Rosa, CA 95405

         The  Trustees  who are not  "interested  persons"  (the  "Disinterested
Trustees")  of the  Trust  as  defined  by the  1940  Act  are  the  same as the
Disinterested  Trustees  of the  Portfolio.  A  majority  of  the  disinterested
Trustees have adopted  written  procedures  reasonably  appropriate to deal with
potential  conflicts of interest arising from the fact that the same individuals
are  Trustees of the Trust and the  Portfolio,  up to and  including  creating a
separate board of Trustees.  Any conflict of interest  between the Trust and the
Portfolio  will be resolved by the Trustees in accordance  with their  fiduciary
obligations  and in  accordance  with the 1940 Act. The Trust's  Declaration  of
Trust   provides  that  it  will   indemnify  its  Trustees  and  officers  (the
"Indemnified  Parties") against  liabilities and expenses incurred in connection
with litigation in which they may be involved  because of their offices with the
Trust, unless, as to liability to the Trust or Fund shareholders,  it is finally
adjudicated  that the  Indemnified  Parties engaged in wilful  misfeasance,  bad
faith,  gross  negligence or reckless  disregard of the duties involved in their
offices,  or unless with respect to any other  matter it is finally  adjudicated
that the Indemnified  Parties did not act in good faith in the reasonable belief
that  their  actions  were  in the  best  interests  of the  Trust.  In  case of
settlement,  such  indemnification  will  not be  provided  unless  it has  been
determined  by  a  court  or  other  body  approving  the  settlement  or  other
disposition,  or by a reasonable  determination,  based upon a review of readily
available facts, by vote of a majority of disinterested Trustees or in a written
opinion of independent  counsel,  that such Indemnified Parties have not engaged
in wilful  misfeasance,  bad faith,  gross  negligence or reckless  disregard of
their duties.
    

       
                                                        19

<PAGE>



       
 Manager and Submanager
   
         DSI provides advice to the Portfolio pursuant to a Management Agreement
(the "Management  Agreement").  The services  provided by the Manager consist of
furnishing  continuously an investment program for the Portfolio.  DSI will have
authority to determine from time to time what securities are purchased,  sold or
exchanged,  and what portion of assets of the Portfolio is held uninvested.  DSI
will also perform such  administrative  and management tasks as may from time to
time be reasonably requested,  including:  (i) maintaining office facilities and
furnishing  clerical services  necessary for maintaining the organization of the
Portfolio and for  performing  administrative  and  management  functions;  (ii)
supervising the overall  administration of the Portfolio,  including negotiation
of contracts  and fees with and  monitoring of  performance  and billings of the
Portfolio's transfer agent,  shareholder  servicing agents,  custodian and other
independent  contractors  or  agents;  (iii)  overseeing  (with  the  advice  of
Portfolio's counsel) the preparation of and, if applicable, filing all documents
required for compliance by the Portfolio with applicable  laws and  regulations,
including  registration  statements,  prospectuses  and statements of additional
information,  semi-annual and annual reports to  shareholders,  proxy statements
and tax returns; (iv) preparing agendas and supporting documents for and minutes
of meetings  of  Trustees,  committees  of Trustees  and  shareholders;  and (v)
arranging for maintenance of the books and records of the Portfolio. The Manager
furnishes  at  its  own  expense  all  facilities  and  personnel  necessary  in
connection with providing these services. The Management Agreement will continue
in effect if such continuance is specifically  approved at least annually by the
Portfolio's  Board  of  Trustees  or by a  majority  of the  outstanding  voting
securities of the Portfolio at a meeting called for the purpose of voting on the
Management  Agreement  (with the vote of each investor in the Portfolio being in
proportion to the amount of its investment), and, in
    

                                                        20

<PAGE>



   
either case,  by a majority of the  Portfolio's  Trustees who are not parties to
the  Management  Agreement or interested  persons of any such party at a meeting
called for the purpose of voting on the Management Agreement.

         The Management  Agreement provides that the Manager may render services
to  others  . DSI may  employ,  at its own  expense,  or may  request  that  the
Portfolio  employ  (subject  to the  requirements  of the 1940  Act) one or more
subadvisers  or  submanagers,  subject  to  DSI's  supervision.  The  Management
Agreement is terminable  without penalty on not more than 60 days' nor less than
30 days' written notice by the Portfolio when authorized either by majority vote
of the  outstanding  voting  securities in the Portfolio  (with the vote of each
investor in the Portfolio  being in proportion to the amount of its  investment)
or by a vote of a majority  of its Board of  Trustees,  or by the  Manager , and
will  automatically  terminate in the event of its  assignment.  The  Management
Agreement  provides that neither the Manager nor its  personnel  shall be liable
for any error of judgment  or mistake of law or for any loss  arising out of any
investment or for any act or omission in its services to the  Portfolio,  except
for wilful  misfeasance,  bad faith or gross negligence or reckless disregard of
its or their obligations and duties under the Management Agreement.

         The Fund's  Prospectus  contains a  description  of fees payable to the
Manager for services under the Management Agreement.

         DSI is a newly  formed  Massachusetts  limited  liability  company with
offices at 11 West 25th  Street,  7th Floor,  New York,  New York 10010,  and is
registered as an investment  adviser under the  Investment  Advisers Act of 1940
(the  "Advisers  Act").  the  names  of  the  principal  owners  of  DSI,  their
relationship to the Trust and their percentage  ownership of DSI follows: Amy L.
Domini,  Chairman of the Board and  President  of the Trust,  is the Manager and
principal executive officer of DSI and a 21.55% owner of DSI. Ms. Domini is also
Chief  Executive  Officer,  Secretary,  Treasurer  and 51%  owner  of KLD  which
licenses the Domini Social Index to DSI. Peter D. Kinder,  Vice President of the
Trust, is a 21.25% owner of DSI. Mr. Kinder is also President and 19% owner
    

                                                        21

<PAGE>



   
     of KLD. Sigward M. Moser, Vice President of the Trust, is a 21.25% owner of
DSI. David P. Wieder,  Vice President of the Trust is a 21.25% owner of DSI. Mr.
Wieder is also President and an owner of Fundamental  Shareholder Services, Inc.
("FSSI"),  a registered  transfer agent which has served as the Fund's  transfer
agent since 1995.

         Mellon  Equity  manages  the  assets of the  Portfolio  pursuant  to an
Investment   Submanagement  Agreement  (the  "Submanagement   Agreement").   The
Submanager  furnishes at its own expense all services,  facilities and personnel
necessary in connection with managing the Portfolio's  investments and effecting
securities  transactions  for the Portfolio.  The  Submanagement  Agreement will
continue  in  effect  if such  continuance  is  specifically  approved  at least
annually  by the  Portfolio's  Board of  Trustees  or by a majority  vote of the
outstanding  voting  securities  in the  Portfolio  at a meeting  called for the
purpose of voting on the Submanagement Agreement (with the vote of each being in
proportion to the amount of its investment),  and, in either case, by a majority
of the Portfolio's  Trustees who are not parties to the Submanagement  Agreement
or interested  persons of any such party at a meeting  called for the purpose of
voting on the Submanagement Agreement.

         The  Submanagement  Agreement  provides that the  Submanager may render
services to others.  The Submanagement  Agreement is terminable  without penalty
upon  not more  than 60 days'  nor less  than 30  days'  written  notice  by the
Portfolio  when  authorized  either by majority vote of the  outstanding  voting
securities  in the  Portfolio  (with the vote of each being in proportion to the
amount  of  their  investment)  or by a vote of the  majority  of its  Board  of
Trustees,  or by the  Manager  with  the  consent  of the  Trustees  and  may be
terminated by the  Submanager  on not less than 90 days'  written  notice to the
Manager and the Trustees,  and will automatically  terminate in the event of its
assignment.  The Submanagement  Agreement provides that the Submanager shall not
be liable for any error of  judgment  or mistake of law or for any loss  arising
out of any  investment  or  for  any  act or  omission  in its  services  to the
Portfolio,  except  for wilful  misfeasance,  bad faith or gross  negligence  or
reckless disregard for its or their obligations and duties under the
Submanagement Agreement.

         Mellon Equity is a Pennsylvania  business trust founded in 1987,  which
is beneficially  owned by Mellon Bank,  N.A. (99% beneficial  interest) and MMIP
(1% beneficial  interest),  a wholly owned subsidiary of Mellon Bank Corporation
("Mellon Bank"). Mellon Equity is a professional investment counseling firm that
provides  investment  management  services to the equity and  balanced  pension,
public fund, and profit-sharing investment
    

                                                        22

<PAGE>



   
management  markets,  and is a registered  investment adviser under the Advisers
Act. Mellon Bank's predecessor organization managed domestic equity,  tax-exempt
and institutional  pension accounts since 1947. The address of Mellon Equity and
each of the principal  executive  officers and directors of Mellon Equity is 500
Grant Street, Suite 3700, Pittsburgh, Pennsylvania 15258.

         The Fund's  Prospectus  contains a  description  of fees payable to the
Submanager for services under the Submanagement Agreement. Prior to [November 1,
1997],   pursuant  to  an  investment  advisory  agreement  (the  "KLD  Advisory
Agreement"),  KLD served as  investment  adviser to the  Portfolio and furnished
continuously  an investment  program by determining the stocks to be included in
the Index.  Additionally,  prior to [November 1, 1997], pursuant to a management
agreement (the "Mellon Equity  Management  Agreement"),  Mellon Equity served as
investment  manager and managed the assets of the  Portfolio  on a daily  basis.
Prior to November 21, 1994, pursuant to an investment  management agreement (the
"State Street Management Agreement"), State Street Bank and Trust Company served
as investment manager to the Portfolio. Prior to [November 1, 1997], pursuant to
a  sponsorship  agreement  (the  "KLD  Sponsorship  Agreement"),  KLD  furnished
administrative  services for the Portfolio.  Prior to November 6, 1996, pursuant
to  an  administrative   services   agreement  (the  "Signature   Administration
Agreement"),  Signature served as the  administrator of the Portfolio.  Prior to
[November 1, 1997], the aggregate investment  management and administration fees
under the prior  agreements with respect to the Portfolio were equal to 0.15% of
the Portfolio's average daily net assets for its then current fiscal year.

         For the fiscal year ended July 31, 1997, the Portfolio incurred $46,528
in  advisory   fees  pursuant  to  the  KLD  Advisory   Agreement,   $46,528  in
administration  fees pursuant to the KLD  Sponsorship  Agreement and $182,885 in
management  fees pursuant to the Mellon  Equity  Management  Agreement.  For the
fiscal year ended July 31, 1996, the Portfolio incurred $38,150 in advisory fees
pursuant to the KLD Advisory Agreement, $38,150 in aggregate administration fees
pursuant  to the  Signature  Administration  Agreement  and the KLD  Sponsorship
Agreement,  and  $128,901  in  management  fees  pursuant  to the Mellon  Equity
Management Agreement. For the fiscal year ended July 31, 1995, KLD waived all of
its fees payable pursuant to the KLD Advisory Agreement,
    


       
                                                        23

<PAGE>



   
     Signature  waived  all of  its  fees  payable  pursuant  to  the  Signature
Administration  Agreement and the Portfolio  incurred $10,180 in management fees
pursuant to the State Street Management Agreement and $29,409 in management fees
pursuant to the Mellon Equity Management Agreement.

                                                      Sponsor

         Pursuant  to a  Sponsorship  Agreement,  DSI  provides  the Trust  with
oversight,  administrative and management services.  DSI provides the Trust with
general office facilities and supervises the overall administration of the Trust
, including, among other responsibilities, the negotiation of contracts and fees
with,  and the  monitoring  of  performance  and  billings  of, the  independent
contractors  and  agents  of the  Trust  ; the  preparation  and  filing  of all
documents  required  for  compliance  by the  Trust  with  applicable  laws  and
regulations,  including registration statements,  prospectuses and statements of
additional  information,  semi-annual and annual reports to shareholders,  proxy
statements and tax returns;  preparing agendas and supporting  documents for and
minutes of meetings  of  Trustees,  committees  of  Trustees  and  shareholders;
maintaining  telephone coverage to respond to shareholder  inquiries;  answering
questions from the general public, the media and investors in the Fund regarding
the securities  holdings of the Portfolio,  limits on investment and the Trust's
proxy voting philosophy and shareholder activism  philosophy;  and arranging for
the maintenance of books and records of the Trust.  The Sponsor provides persons
satisfactory  to the Board of  Trustees of the Trust to serve as officers of the
Trust . Such  officers,  as well as certain other  employees and Trustees of the
Trust, may be directors, officers or employees of the Sponsor or its affiliates.
    


                The Fund's Prospectus contains a description of the fees payable
to the Sponsor  under the  Sponsorship  Agreement.  Prior to [November 1, 1997],
Signature served as administrator
    

                                                        24

<PAGE>



   
 . For the period from May 1, 1996 (commencement of operations)  through July 31,
1996 ,  Signature  voluntarily  waived all of its  administrative  fees from the
Fund.  For the  fiscal  year  ended  July 31,  1997,  the Fund  incurred  [ ] in
administrative fees.

         The  Sponsorship  Agreement with the Trust provides that DSI may render
administrative services to others. The Sponsorship Agreement with the Trust also
provides  that  neither the Sponsor  nor its  personnel  shall be liable for any
error  of  judgment  or  mistake  of law  or for  any  act  or  omission  in the
administration or management of the Trust,  except for wilful  misfeasance,  bad
faith or gross negligence in the performance of its or their duties or by reason
of  reckless  disregard  of  its or  their  obligations  and  duties  under  the
Sponsorship Agreement.
    

       
                                                        25

<PAGE>



       
                                   Distributor

         The Trust has entered into a  Distribution  Agreement  with  Signature.
Under the Distribution Agreement, the Distributor acts as the agent of the Trust
in connection with the offering of shares of the Fund. The Distributor  receives
no additional  compensation for its services under the  Distribution  Agreement.
Signature is a wholly-owned subsidiary of Signature Financial Group, Inc.

                          Transfer Agent and Custodian

   
         The Trust has entered into a Transfer Agency Agreement with Fundamental
Shareholder Services,  Inc. ("FSSI") pursuant to which FSSI acts as the transfer
agent for the Fund.  Mr.  David P.  Wieder,  Vice  President  of the Trust and a
principal of DSI, the Manager of the Portfolio and Sponsor of the Trust,  is a [
]% owner of, and  President  of FSSI.  The Trust has  entered  into a  Custodian
Agreement with Investors Bank & Trust Company ("IBT") pursuant to which IBT acts
as custodian  for the Fund.  The  Portfolio  has entered into a Transfer  Agency
Agreement  with  IBT  pursuant  to  which  IBT acts as  transfer  agent  for the
Portfolio.  The  Portfolio  has  entered  into a  Custodian  Agreement  with IBT
pursuant  to which  IBT acts as  custodian  for the  Portfolio.  For  additional
information, see "Transfer Agent and Custodian" in the Prospectus.
    


       
                             6. INDEPENDENT AUDITORS

   
         [ ] are the  independent  auditors for the Trust and for the Portfolio,
providing audit services, tax
    

                                                        26

<PAGE>



return  preparation,  and  assistance  and  consultation  with  respect  to  the
preparation of filings with the Securities and Exchange Commission.

                                   7. TAXATION

         Each year the Fund  intends  to  qualify  and elect to be  treated as a
"regulated  investment  company" under Subchapter M of the Internal Revenue Code
of 1986,  as amended (the "Code"),  by meeting all  applicable  requirements  of
Subchapter M, including  requirements  (applied through the Fund's proportionate
interest in the  Portfolio)  as to the nature of the Fund's  gross  income,  the
amount of Fund  distributions  and the  composition  and  holding  period of the
Fund's portfolio  assets.  Because the Fund intends to distribute all of its net
investment  income and net realized  capital gains to shareholders in accordance
with the timing  requirements  imposed by the Code,  it is not expected that the
Fund will be  required to pay any federal  income or excise  taxes.  If the Fund
should fail to qualify as a "regulated investment company" in any year, the Fund
would incur a regular  corporate  federal income tax upon its taxable income and
Fund distributions would generally be taxable as ordinary dividend income to the
shareholders.  As long as it qualifies as a "regulated investment company" under
the Code,  the Fund will not be required to pay  Massachusetts  income or excise
taxes.

         Under   interpretations  of  the  Internal  Revenue  Service,  (1)  the
Portfolio will be treated for federal  income tax purposes as a partnership  and
(2) for  purposes  of  determining  whether  the Fund  satisfies  the income and
diversification  requirements  to maintain its status as a regulated  investment
company,  the Fund,  as an  investor in the  Portfolio,  will be deemed to own a
proportionate  share of the Portfolio's assets and will be deemed to be entitled
to the Portfolio's  income or loss attributable to that share. The Portfolio has
advised the Fund that it intends to conduct its  operations  so as to enable its
investors, including the Fund, to satisfy those requirements.

         Shareholders of the Fund normally will have to pay federal income taxes
and  any  state  or  local  income  taxes  on the  dividends  and  capital  gain
distributions they receive from the Fund. Dividends from ordinary income and any
distributions  from net short-term  capital gains are taxable to shareholders as
ordinary income for federal income tax purposes,  whether the  distributions are
made in cash or in additional  shares.  A portion of the Fund's  ordinary income
dividends (but none of the Fund's  capital  gains) is normally  eligible for the
dividends  received  deduction  for  corporations  if  the  recipient  otherwise
qualifies  for that  deduction  with  respect  to its  holding  of Fund  shares.
Availability of the deduction for a particular corporate  shareholder is subject
to certain  limitations,  and deducted amounts may be subject to the alternative
minimum  tax and  result in  certain  basis  adjustments.  Distributions  of net
capital  gains  (i.e.,  the  excess  of net  long-term  capital  gains  over net
short-term capital losses), whether made in cash or in additional

                                                        27

<PAGE>



shares,  are taxable to  shareholders  as  long-term  capital  gains for federal
income tax purposes without regard to the length of time the  shareholders  have
held their shares.

         Amounts  not  distributed  on a  timely  basis in  accordance  with the
calendar year distribution  requirement are subject to a nondeductible 4% excise
tax. To prevent  imposition  of the excise tax,  the Fund must,  and intends to,
distribute  during each calendar year  substantially  all of its ordinary income
for that year and substantially all of its capital gain in excess of its capital
losses for that year, plus any  undistributed  ordinary income and capital gains
from previous years. Any Fund dividend that is declared in October, November, or
December of any calendar year, that is payable to shareholders of record in such
a month,  and that is paid the following  January will be treated as if received
by the shareholders on December 31 of the year in which the divided is declared.
The Fund will  notify  shareholders  regarding  the  federal  tax  status of its
distributions after the end of each calendar year.

         Any Fund  distribution  will have the effect of reducing  the per share
net  asset  value of  shares  in the  Fund by the  amount  of the  distribution.
Shareholders   purchasing   shares   shortly  before  the  record  date  of  any
distribution  may thus pay the full price for the  shares  and then  effectively
receive a portion of the purchase price back as a taxable distribution.

         In general,  any gain or loss  realized upon a taxable  disposition  of
shares of the Fund by a  shareholder  that holds such shares as a capital  asset
will be treated as  long-term  capital gain or loss if the shares have been held
for more than twelve months and otherwise as a short-term capital gain or loss.
 However,  any loss realized  upon a disposition  of shares in the Fund held for
six months or less will be treated as a long-term  capital loss to the extent of
any  distributions  of net capital gain made with respect to those  shares.  Any
loss realized upon a  disposition  of shares may also be disallowed  under rules
relating to wash sales.

         The  Trust  anticipates  that  the  Portfolio  will  be  treated  as  a
partnership  for federal  income tax  purposes.  As such,  the  Portfolio is not
subject to federal income taxation. Instead, the Fund must take into account, in
computing its federal income tax liability, its share of the Portfolio's income,
gains, losses,  deductions,  credits and tax preference items, without regard to
whether it has received any cash distributions  from the Portfolio.  Withdrawals
by the Fund from the Portfolio generally will not result in the Fund recognizing
any gain or loss for federal  income tax purposes,  except that (1) gain will be
recognized  to the extent  that any cash  distributed  exceeds  the basis of the
Fund's interest in the Portfolio prior to the  distribution,  (2) income or gain
will be  realized  if the  withdrawal  is in  liquidation  of the Fund's  entire
interest  in  the  Portfolio  and  includes  a  disproportionate  share  of  any
unrealized

                                                        28

<PAGE>



receivables  held by the  Portfolio,  and (3)  loss  will be  recognized  if the
distribution  is in liquidation of that entire  interest and consists  solely of
cash  and/or  unrealized  receivables.  The basis of the Fund's  interest in the
Portfolio generally equals the amount of cash and the basis of any property that
the Fund invests in the Portfolio,  increased by the Fund's share of income from
the Portfolio and decreased by the Fund's share of losses from the Portfolio and
the amount of any cash  distributions and the basis of any property  distributed
from the Portfolio.

         The  Portfolio is organized as a New York trust.  The  Portfolio is not
subject  to any  income  or  franchise  tax  in the  State  of New  York  or the
Commonwealth of Massachusetts.  The investment by the Fund in the Portfolio does
not cause the Fund to be liable for any income or franchise  tax in the State of
New York.

         Fund  shareholders  may be  subject  to state and  local  taxes on Fund
distributions  to them.  Shareholders  are  advised  to  consult  with their tax
advisers  with  respect  to  the  particular  tax  consequences  to  them  of an
investment in the Fund.

               8. PORTFOLIO TRANSACTIONS AND BROKERAGE COMMISSIONS

   
         Specific decisions to purchase or sell securities for the Portfolio are
made by a portfolio  manager who is an  employee  of the  Submanager  and who is
appointed and  supervised  by its senior  officers.  Changes in the  Portfolio's
investments are reviewed by its Board of Trustees.  The portfolio manager of the
Portfolio may serve other clients of the Submanager in a similar capacity.

         The   Portfolio's   primary   consideration   in   placing   securities
transactions  with  broker-dealers  for  execution is to obtain and maintain the
availability of execution at the most favorable prices and in the most effective
manner  possible.  The  Submanager  attempts to achieve this result by selecting
broker-dealers  to execute  transactions  on behalf of the  Portfolio  and other
clients of the  Submanager on the basis of their  professional  capability,  the
value and quality of their brokerage services,  and the level of their brokerage
commissions.  In the case of securities  traded in the  over-the-counter  market
(where no stated  commissions  are paid but the prices include a dealer's markup
or markdown),  the  Submanager  normally seeks to deal directly with the primary
market makers, unless in its opinion, best execution is available elsewhere.  In
the case of securities purchased from underwriters,  the cost of such securities
generally includes a fixed underwriting  commission or concession.  From time to
time,  soliciting  dealer fees are available to the  Submanager on the tender of
the  Portfolio's  securities  in  so-called  tender  or  exchange  offers.  Such
soliciting  dealer  fees  are in  effect  recaptured  for the  Portfolio  by the
Submanager. At present no other
    

                                                        29

<PAGE>



   
         recapture  arrangements  are in effect.  Consistent  with the foregoing
primary  consideration,  the  Conduct  Rules  of  the  National  Association  of
Securities  Dealers,  Inc.  and  such  other  policies  as the  Trustees  of the
Portfolio may determine, the Submanager may consider sales of shares of the Fund
and of  securities  of other  investors  in the  Portfolio  as a  factor  in the
selection of broker-dealers to execute the Portfolio's securities transactions.

         Under the Submanagement  Agreement and as permitted by Section 28(e) of
the  Securities  Exchange Act of 1934, the Submanager may cause the Portfolio to
pay a  broker-dealer  acting on an agency  basis which  provides  brokerage  and
research  services to the  Submanager or the Manager an amount of commission for
effecting a  securities  transaction  for the  Portfolio in excess of the amount
other broker-  dealers would have charged for the  transaction if the Submanager
determines  in good faith that the 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  either  a  particular  transaction  or the
Submanager's or the Manager's  overall  responsibilities  to the Portfolio or to
its other  clients.  Not all of such services are useful or of value in advising
the Portfolio.

         The term  "brokerage and research  services"  includes advice as to the
value of securities,  the advisability of investing in,  purchasing,  or selling
securities,  and the  availability  of securities or of purchasers or sellers of
securities;  furnishing  analyses  and reports  concerning  issues,  industries,
securities,  economic factors and trends, portfolio strategy and the performance
of accounts;  and effecting  securities  transactions  and performing  functions
incidental  thereto such as clearance and  settlement.  However,  because of the
Portfolio's  policy of investing in accordance with the Domini Social Index, the
Submanager and the Manager  currently  intend to make only a limited use of such
brokerage and research services.

         Although commissions paid on every transaction will, in the judgment of
the Submanager, be reasonable in relation to the value of the brokerage services
provided,  commissions  exceeding those which another broker might charge may be
paid to  broker-dealers  who were selected to execute  transactions on behalf of
the Portfolio and the  Submanager's or the Manager's other clients,  in part for
providing  advice as to the  availability  of  securities  or of  purchasers  or
sellers of  securities  and services in effecting  securities  transactions  and
performing  functions  incidental  thereto  such as  clearance  and  settlement.
Certain broker-dealers may be willing to furnish statistical, research and other
factual  information  or  services  to  the  Submanager  or the  Manager  for no
consideration other than brokerage or underwriting commissions.
    


                                                        30

<PAGE>



   
         The  Submanager  and the  Manager  attempt to  evaluate  the quality of
research  provided by brokers.  The  Submanager  and the Manager  sometimes  use
evaluations  resulting from this effort as a  consideration  in the selection of
brokers to execute portfolio transactions.  However,  neither the Submanager nor
the Manager is able to quantify  the amount of  commissions  which are paid as a
result  of such  research  because a  substantial  number  of  transactions  are
effected   through  brokers  which  provide  research  but  which  are  selected
principally because of their execution capabilities.

         The fees that the Portfolio pays to the Submanager and the Manager will
not be reduced as a  consequence  of the  Portfolio's  receipt of brokerage  and
research  services.  To the extent the Portfolio's  securities  transactions are
used to obtain brokerage and research services,  the brokerage  commissions paid
by the  Portfolio  will  exceed  those  that  might  otherwise  be paid for such
portfolio  transactions  and  research,  by an amount  which cannot be presently
determined.  Such  services may be useful and of value to the  Submanager or the
Manager in serving both the Portfolio and other  clients and,  conversely,  such
services obtained by the placement of brokerage business of other clients may be
useful to the  Submanager or the Manager in carrying out its  obligations to the
Portfolio.  While such  services  are not expected to reduce the expenses of the
Submanager or the Manager,  the Submanager or the Manager would,  through use of
the services, avoid the additional expenses which would be incurred if it should
attempt to develop comparable  information through its own staff. For the fiscal
years  ended  July 31,  1995 , 1996  and  1997,  the  Portfolio  paid  brokerage
commissions of $15,222 , $45,017 and [ ], respectively.

         In certain instances there may be securities which are suitable for the
Portfolio as well as for one or more of the  Submanager's or the Manager's other
clients.  Investment decisions for the Portfolio and for the Submanager's or the
Manager's  other  clients  are made with a view to  achieving  their  respective
investment  objectives.  It may develop that a particular  security is bought or
sold for only one client even though it might be held by, or bought or sold for,
other  clients.  Likewise,  a particular  security may be bought for one or more
clients  when  one  or  more  clients  are  selling  that  same  security.  Some
simultaneous transactions are inevitable when several clients receive investment
advice from the same investment adviser,  particularly when the same security is
suitable for the investment objectives of more than one client. When two or more
clients are simultaneously engaged in the purchase or sale of the same security,
the securities are allocated  among clients in a manner believed to be equitable
to  each.  It is  recognized  that  in  some  cases  this  system  could  have a
detrimental  effect  on  the  price  or  volume  of the  security  as far as the
Portfolio  is  concerned.  However,  it is  believed  that  the  ability  of the
Portfolio to participate in volume
    

                                                        31

<PAGE>



transactions will produce better executions for the Portfolio.

             9. DESCRIPTION OF SHARES, VOTING RIGHTS AND LIABILITIES

         The  Trust  is a  Massachusetts  business  trust  established  under  a
Declaration of Trust dated as of April 1, 1996. Its authorized  capital consists
of an  unlimited  number of shares of  beneficial  interest  of $0.01 par value,
issued  in  separate  series.  Each  share of each  series  represents  an equal
proportionate interest in that series with each other share of that series.

         The assets of the Trust received for the issue or sale of the shares of
each fund and all income,  earnings,  profits and proceeds thereof, subject only
to the  rights of  creditors,  are  specifically  allocated  to such  series and
constitute the underlying  assets of such series.  The underlying assets of each
series are  segregated  on the books of account,  and are to be charged with the
liabilities  in  respect  to such  series  and with such a share of the  general
liabilities of the Trust. If a series were unable to meet its  obligations,  the
assets of all other series might be available to creditors for that purpose,  in
which  case the assets of such other  series  could be used to meet  liabilities
which are not otherwise  properly  chargeable to them.  Expenses with respect to
any two or more series are to be allocated in  proportion  to the asset value of
the respective  series except where allocations of direct expenses can otherwise
be fairly made. The officers of the Trust, subject to the general supervision of
the Trustees,  have the power to determine which  liabilities are allocable to a
given  series,  or which are general or allocable to two or more series.  In the
event of the dissolution or liquidation of the Trust or any series,  the holders
of the shares of any series are  entitled to receive as a class the value of the
underlying assets of such shares available for distribution to shareholders.

         Shares  of the  Trust  entitle  their  holder  to one vote  per  share;
however,  separate  votes  are  taken by each  series on  matters  affecting  an
individual series. For example, a change in investment policy for a series would
be  voted  upon  only  by  shareholders  of the  series  involved.  The  Trust's
Declaration of Trust provides that, at any meeting of  shareholders of the Trust
or of any series, a Shareholder  Servicing Agent may vote any shares as to which
such  Shareholder  Servicing  Agent is the  agent of  record  and  which are not
represented in person or by proxy at the meeting,  proportionately in accordance
with the votes  cast by  holders  of all  shares  otherwise  represented  at the
meeting in person or by proxy as to which such  Shareholder  Servicing  Agent is
the agent of record.  Any shares so voted by a Shareholder  Servicing Agent will
be deemed represented at the meeting for purposes of quorum requirements.

     The Trustees of the Trust have the authority to designate additional series
and to designate the relative rights and

                                                        32

<PAGE>



   
preferences  as between the different  series.  There is presently one series so
designated.   All  shares  issued  and  outstanding   will  be  fully  paid  and
nonassessable  by the Trust,  and  redeemable as described in this  Statement of
Additional Information and in the Prospectus.
    

         The Declaration of Trust provides that obligations of the Trust are not
binding upon the Trustees  individually but only upon the property of the Trust,
that the  Trustees  and  officers  will not be liable for errors of  judgment or
mistakes of fact or law,  and that the Trust will  indemnify  its  Trustees  and
officers against liabilities and expenses incurred in connection with litigation
in which they may be involved because of their offices with the Trust unless, as
to liability to Trust or Fund shareholders,  it is finally adjudicated that they
engaged  in  willful  misfeasance,  bad  faith,  gross  negligence  or  reckless
disregard of the duties involved in their offices, or unless with respect to any
other  matter it is finally  adjudicated  that they did not act in good faith in
the  reasonable  belief that their  actions  were in the best  interests  of the
Trust.  In the case of  settlement,  such  indemnification  will not be provided
unless it has been  determined by a court or other body approving the settlement
or other disposition,  or by a reasonable determination,  based upon a review of
readily available facts, by vote of a majority of disinterested Trustees or in a
written opinion of independent counsel,  that such officers or Trustees have not
engaged  in  willful  misfeasance,  bad  faith,  gross  negligence  or  reckless
disregard of their duties.

         Under Massachusetts law, shareholders of a Massachusetts business trust
may, under certain circumstances,  be held personally liable as partners for its
obligations  and  liabilities.  However,  the  Declaration  of Trust contains an
express disclaimer of shareholder  liability for acts or obligations of the Fund
and  provides  for  indemnification  and  reimbursement  of expenses out of Fund
property for any shareholder  held personally  liable for the obligations of the
Fund.  The  Declaration  of Trust also  provides for the  maintenance,  by or on
behalf of the  Trust  and the  Fund,  of  appropriate  insurance  (for  example,
fidelity  bonding and errors and omissions  insurance) for the protection of the
Fund and its  shareholders  and the Trust's  Trustees,  officers,  employees and
agents  covering  possible  tort  and  other  liabilities.  Thus,  the risk of a
shareholder  incurring  financial  loss on account of  shareholder  liability is
limited to circumstances in which both inadequate insurance existed and the Fund
itself was unable to meet its obligations.

                            10. FINANCIAL STATEMENTS
   
         The financial  statements of the Fund and the Portfolio,  dated January
31,  1997,  from the  Fund's  semi-annual  report  are  incorporated  herein  by
reference  from the Fund's Form N-30D  filed with the  Securities  and  Exchange
Commission on May 1, 1997 (accession no.  0001035347-97-000011).  A copy of such
report  will be  provided,  without  charge,  to  each  person  receiving  this
Statement of Additional Information by calling (800) 762-6814.
    
   
 DSI268E
    



                                                        34



<PAGE>


                                     PART C

Item 24.  Financial Statements and Exhibits.

         (a) Financial Statements:

         The following financial statements are included in Part A:
   
         Financial Highlights [to be finalized by amendment]

         The following financial statements are incorporated by reference into
         Part B:
          
         For Domini Institutional Social Equity Fund

         Statement of Assets and Liabilities at January 31, 1997 (unaudited)
         Statement of Operations for the six months ended January 31, 1997
         (unaudited)
         Statements of Changes in Net Assets for the periods
         indicated (unaudited)
         Financial Highlights for the periods indicated (unaudited)
         Notes to Financial Statements at January 31, 1997 (unaudited)
    

         For Domini Social Index Portfolio:

   
         Portfolio of Investments at January 31, 1997 (unaudited)
         Statement of Assets and Liabilities at January 31, 1997 (unaudited)
         Statement of Operations for the six months ended July 31,
         1997 (unaudited)
         Statement of Changes in Net Assets for the periods
         indicated (unaudited)
         Financial Highlights for the periods indicated (unaudited)
         Notes to Financial Statements at January 31, 1997 (unaudited)
    


         (b) Exhibits:

1.    Declaration of Trust.(1)
   
2.    By-Laws of the Registrant, as amended June 13, 1997. (3)
    
6(a). Form of Distribution Agreement between the Registrant and Signature
      Broker-Dealer Services, Inc. ("SBDS") as principal underwriter.(2)

8.    Custody Agreement between the Registrant and Investors Bank & 
      Trust Company.(1)

9(a). Administrative Services Agreement between the Registrant and SBDS
      as administrator.(1)

9(b)  Transfer Agency Agreement between the Registrant and Fundamental
      Shareholder Services, Inc.(1)

10.   Opinion of Counsel.(2)
   
11.   Consent of Independent Accountants. [to be filed by amendment]
    
16.   Schedule for Computation of Performance Information.(2)

19.   Powers of Attorney.(3)

27.   Financial Data Schedule.(3)

(1)Incorporated herein by reference from the Registrant's registration
statement on Form N-1A (the "Registration Statement") (File no. 811-07599) as
filed with the U.S. Securities and Exchange Commission (the "SEC") on April 18,
1996.
   
(2)Incorporated herein by reference from the Registration Statement on Form N-1A
(File no. 811-07599) as filed with the SEC on October 18, 1996.

(3)Filed herewith.    
<PAGE>
Item 25.  Persons Controlled by or under Common Control with Registrant.

         Not applicable.

Item 26.  Number of Holders of Securities.

         (1)                                         (2)
         Title of Class                              Number of Record Holders
         (par value $0.01 per share)                 (as of September 1, 1997) 

         Domini Institutional Social Equity Fund     24

Item 27.  Indemnification.

         Reference is hereby made to Article V of the Registrant's Declaration
of Trust, filed as an exhibit to the Registration Statement.

   
         The Trustees and officers of the Registrant and the personnel of the
Registrant's administrator and distributor are insured under an errors and
omissions liability insurance policy. The Registrant and its officers are also
insured under the fidelity bond required by Rule 17g-1 under the Investment
Company Act of 1940, as amended.    

         Insofar as indemnification for liabilities arising under the Securities
Act of 1933, as amended (the "1933 Act"), may be permitted to directors,
trustees, officers or controlling persons of the Registrant and the principal
underwriter by the Registrant pursuant to the Declaration of Trust or otherwise,
the Registrant is aware that in the opinion of the SEC, such indemnification is
against public policy as expressed in the 1933 Act and, therefore, is
unenforceable. In the event that a claim for indemnification against such
liabilities (other than the payment by the Registrant of expenses incurred or
paid by directors, trustees, officers or controlling persons of the Registrant
and principal underwriter in connection with the successful defense of any act,
suit or proceeding) is asserted against the Registrant by such director,
trustee, officer or controlling person or principal underwriter in connection
with the shares being registered, the Registrant will, unless in the opinion of
its counsel the matter has been settled by controlling precedent, submit to a
court of appropriate jurisdiction the question whether such indemnification by
it is against public policy as expressed in the 1933 Act and will be governed by
the final adjudication of such issues.

Item 28.  Business and Other Connections of Investment Adviser.

         Not Applicable.

Item 29.  Principal Underwriters.

   
     (a) SBDS is the distributor for the Registrant.  SBDS and its affiliates
serve as the distributor for other registered investment companies.

     (b) The information required by this Item 29 with respect to each director 
or officer of SBDS is incorporated herein by reference from Schedule A of
Form BD (File No. 8-41134) as filed by SBDS pursuant to the Securities Exchange
Act of 1934.    

     (c) Not applicable.

Item 30.  Location of Accounts and Records.

         The accounts and records of the Registrant are located, in whole or in
part, at the office of the Registrant and the following locations:

Name                                                    Address

Kinder, Lydenberg, Domini & Co., Inc.                  127 Mt. Auburn Street
 (subadministrator)                                    Cambridge, MA 02138

Fundamental Shareholder Services, Inc.                 90 Washington Street
(transfer agent)                                       New York, NY 10006

Signature Broker-Dealer Services, Inc.                 6 St. James Avenue
(administrator and principal underwriter)              Boston, MA  02116
<PAGE>

   
Investors Bank & Trust Company                         200 Clarendon Street
(custodian)                                            Boston, MA 02116    

Item 31.  Management Services.

         Not applicable.

Item 32.  Undertakings.

         (a) If the information called for by Item 5A of Form N-1A is contained
in the latest annual report to shareholders, the Registrant will furnish each
person to whom a prospectus is delivered with a copy of the Registrant's latest
annual report to shareholders upon request and without charge.
       



<PAGE>
SIGNATURES
   
         Pursuant to the requirements of the Securities Act of 1933 and the
Investment Company Act of 1940, the registrant has duly caused this registration
statement to be signed on its behalf by the undersigned, thereto duly
authorized, in the City of Boston and Commonwealth of Massachusetts on the 29th
day of September, 1997.
    
DOMINI INSTITUTIONAL TRUST

   
By:       /s/ LINDA T. GIBSON        
          -----------------------
         Linda T. Gibson, Secretary

         Pursuant to the requirements of the Securities Act of 1933, this
registration statement has been signed below by the following persons in the
capacities indicated on September 29, 1997.
    
Signature, Title

   
AMY L. DOMINI* 
- ------------------------
Amy L. Domini, President (Principal Executive
Officer), Chair and Trustee

JOHN R. ELDER*
- ------------------------
John R. Elder 
Treasurer, Principal Financial Officer 
  and Principal Accounting Officer
    
   
    
ALLEN M. MAYES*
- ------------------------
Allen M. Mayes
Trustee

FREDERICK C. WILLIAMSON*
- ------------------------
Frederick C. Williamson
Trustee

TIMOTHY SMITH*
- ------------------------
Timothy Smith
Trustee
   
WILLIAM C. OSBORN*
- ------------------------
William C. Osborn
Trustee
    
   
KAREN PAUL*
- -----------------------
Karen Paul
Trustee


*By /S/ LINDA T. GIBSON
    -------------------------
   Linda T. Gibson
    

*Pursuant to powers of attorney filed herewith.
<PAGE>


SIGNATURES
   
     Domini Social Index Portfolio (the "Portfolio") has duly caused this post-
effective amendment to the registration statement on Form N-1A (File No.
333-14449) of Domini Institutional Trust (the "Trust") to be signed on its
behalf by the undersigned,  thereto duly authorized,  in the City of Boston and
Commonwealth of Massachusetts on the 29th day of September, 1997.
    
DOMINI SOCIAL INDEX PORTFOLIO

   
By:      /S/ LINDA T. GIBSON          
         -----------------------------
         Linda T. Gibson, Secretary

         This post-effective amendment to the registration statement on Form
N-1A of the Trust has been signed below by the following persons in the
capacities indicated on September 29, 1997.
    
Signature, Title

   
AMY L. DOMINI* 
- ---------------------------------
Amy L. Domini 
President (Principal Executive Officer,
Chair and Trustee of the Portfolio

JOHN R. ELDER*
- ---------------------------------
John R. Elder
Treasurer, Principal Financial Officer and
Principal Accounting Officer of the Portfolio


/S/ ALLEN M. MAYES*
- ---------------------------------
Allen M. Mayes 
Trustee of the Portfolio

/S/ FREDERICK C. WILLIAMSON*
- ---------------------------------
Frederick C. Williamson 
Trustee of the Portfolio

/S/ TIMOTHY SMITH*
- ---------------------------------
Timothy Smith 
Trustee of the Portfolio

/S/ WILLIAM C. OSBORN
- ---------------------------------
William C. Osborn
Trustee of the Portfolio

- ---------------------------------
Emily Watts Card
Trustee of the Portfolio
    

   
*By /S/ LINDA T. GIBSON
    --------------------------------
    Linda T. Gibson
    

*Pursuant to powers of attorney filed herewith.

DSI250D.EDG


<PAGE>



INDEX TO EXHIBITS

Exhibit No.         Description of Exhibit
- -----------         ----------------------

EX-99.B2            By-Laws of the Registrant, as amended June 13, 1997

EX-99.B19           Powers of Attorney

EX-99.B27           Financial Data Schedule




DSI225C


                                            BY-LAWS

                                              OF

                                  DOMINI INSTITUTIONAL TRUST


                                           ARTICLE I

                                          DEFINITIONS

        The  terms  "COMMISSION",   "DECLARATION",   "DISTRIBUTOR",  "INVESTMENT
ADVISER",  "MAJORITY  SHAREHOLDER  VOTE", "1940 ACT",  "SHAREHOLDER",  "SHARES",
"TRANSFER AGENT",  "TRUST",  "TRUST PROPERTY" and "TRUSTEES" have the respective
meanings given them in the  Declaration of Trust of Domini  Institutional  Trust
dated as of April 1, 1996.


                                          ARTICLE II

                                            OFFICES

         SECTION  1.  PRINCIPAL  OFFICE.  Until  changed  by the  Trustees,  the
principal office of the Trust in the  Commonwealth of Massachusetts  shall be in
the City of Boston, County of Suffolk.

         SECTION  2.  OTHER  OFFICES.  The Trust may have  offices in such other
places without as well as within the  Commonwealth as the Trustees may from time
to time determine.


                                          ARTICLE III

                                         SHAREHOLDERS

        SECTION 1. MEETINGS. A meeting of Shareholders may be called at any time
by a majority of the  Trustees  and shall be called by any Trustee  upon written
request,  which shall  specify the purpose or purposes for which such meeting is
to be called, of Shareholders  holding in the aggregate not less than 10% of the
outstanding  Shares  entitled to vote on the matters  specified  in such written
request.  Any such meeting shall be held within or without the  Commonwealth  of
Massachusetts on such day and at such time as the Trustees shall designate.  The
holders of a majority of outstanding  Shares  entitled to vote present in person
or by proxy shall constitute a quorum at any meeting of the Shareholders. In the
absence of a quorum,  a majority of outstanding  Shares entitled to vote present
in person or by proxy may adjourn  the meeting  from time to time until a quorum
shall be present.

        Whenever a matter is required to be voted by  Shareholders  of the Trust
in the  aggregate  under  Section 6.8 and Section 6.9 and Section  6.9(g) of the
Declaration, the Trust may either hold a meeting of Shareholders of all series


<PAGE>


                                              2

and  classes,  as  established  and  designated  pursuant  to Section 6.9 of the
Declaration,  to vote on such matter,  or hold separate meetings of shareholders
of each of the individual series and/or classes to vote on such matter, PROVIDED
THAT (i) such  separate  meetings  shall be held  within one year of each other,
(ii) a quorum consisting of the holders of the majority of outstanding Shares of
the individual  series and/or  classes  entitled to vote present in person or by
proxy  shall  be  present  at each  such  separate  meeting  and  (iii) a quorum
consisting  of the holders of a majority of all Shares of the Trust  entitled to
vote  present in person or by proxy  shall be present in the  aggregate  at such
separate  meetings,  and the votes of Shareholders at all such separate meetings
shall be aggregated in order to determine if sufficient votes have been cast for
such matter to be voted.

        SECTION 2. NOTICE OF MEETINGS  Notice of all  meetings of  Shareholders,
stating  the time,  place and  purposes  of the  meeting,  shall be given by the
Trustees by mail to each  Shareholder  entitled  to vote at such  meeting at his
address as  recorded on the  register of the Trust,  mailed at least 10 days and
not more than 60 days before the meeting. Only the business stated in the notice
of the meeting shall be considered at such meeting. Any adjourned meeting may be
held as  adjourned  without  further  notice.  No  notice  need be  given to any
Shareholder  who shall have failed to inform the Trust of his current address or
if a written  waiver of  notice,  executed  before or after the  meeting  by the
Shareholder or his attorney thereunto  authorized,  is filed with the records of
the meeting.

        Where  separate  meetings  are  held  for  Shareholders  of  each of the
individual  series and/or classes to vote on a matter required to be voted on by
Shareholders of the Trust in the aggregate,  as provided in Article III, Section
1 above,  notice of each such  separate  meeting shall be provided in the manner
described above in this Section 2.

        SECTION 3. RECORD DATE. For the purpose of determining the  Shareholders
who are entitled to notice of and to vote at any meeting,  or to  participate in
any distribution,  or for the purpose of any other action, the Trustees may from
time to time close the transfer books for such period, not exceeding 30 days, as
the Trustees may determine;  or without  closing the transfer books the Trustees
may fix a date  not  more  than 60 days  prior  to the  date of any  meeting  of
Shareholders  or  distribution  or  other  action  as  a  record  date  for  the
determination  of the persons to be treated as  Shareholders  of record for such
purpose.

        Where  separate  meetings  are  held  for  Shareholders  of  each of the
individual series to vote on a matter required to be voted on by Shareholders of
the Trust in the  aggregate,  as provided in Article III,  Section 1 above,  the
record date of each such  separate  meeting  shall be  determined  in the manner
described above in this Section 3.

        SECTION  4.  ACTIONS.   The  Shareholders   shall  take  action  by  the
affirmative  vote  of the  holders  of a  majority,  except  in the  case of the
election of Trustees which shall only require a plurality, of the Shares present
and entitled to vote at a meeting of  Shareholders at which a quorum is present,
except as may be otherwise required by the 1940 Act or the Declaration of Trust.


<PAGE>


                                              3


        SECTION 5. PROXIES. At any meeting of Shareholders, any holder of Shares
entitled  to vote  thereat  may vote by proxy,  provided  that no proxy shall be
voted  at any  meeting  unless  it  shall  have  been  placed  on file  with the
Secretary, or with such other officer or agent of the Trust as the Secretary may
direct,  for  verification  prior to the time at which such vote shall be taken.
Pursuant to a vote of a majority of the  Trustees,  proxies may be  solicited in
the name of the Trust or one or more  Trustees or  officers  of the Trust.  Only
Shareholders  of record  shall be  entitled  to vote.  Each full Share  shall be
entitled to one vote and  fractional  Shares shall be entitled to a vote of such
fraction. When any Share is held jointly by several persons, any one of them may
vote at any meeting in person or by proxy in respect of such Share,  but if more
than one of them  shall be present  at such  meeting in person or by proxy,  and
such joint  owners or their  proxies so  present  disagree  as to any vote to be
cast,  such  vote  shall not be  received  in  respect  of such  Share.  A proxy
purporting to be executed by or on behalf of a Shareholder shall be deemed valid
unless  challenged  at or prior  to its  exercise,  and the  burden  of  proving
invalidity  shall rest on the  challenger.  If the holder of any such Share is a
minor or a person of unsound mind, and subject to  guardianship  or to the legal
control of any other person as regards the charge or  management  of such Share,
such Share may be voted by such  guardian  or such  other  person  appointed  or
having such control, and such vote may be given in person or by proxy.

         SECTION 6.  INSPECTION  OF  RECORDS.  The records of the Trust shall be
open  to  inspection  by  Shareholders  to  the  same  extent  as  is  permitted
shareholders of a Massachusetts business corporation.

        SECTION 7.  ACTION  WITHOUT  MEETING.  Any action  which may be taken by
Shareholders  may be taken  without  a meeting  if a  majority  of  Shareholders
entitled  to vote on the matter (or such larger  proportion  thereof as shall be
required by law, the  Declaration  or these By-Laws for approval of such matter)
consent to the action in writing  and the  written  consents  are filed with the
records of the meetings of  Shareholders.  Such consent shall be treated for all
purposes as a vote taken at a meeting of Shareholders.

                                          ARTICLE IV

                                           TRUSTEES

        SECTION  1.  MEETINGS  OF  THE  TRUSTEES.  The  Trustees  may  in  their
discretion  provide for regular or stated  meetings of the  Trustees.  Notice of
regular or stated  meetings  need not be given.  Meetings of the Trustees  other
than regular or stated meetings shall be held whenever called by the Chairman or
by any Trustee.  Notice of the time and place of each meeting other than regular
or stated meetings shall be given by the Secretary or an Assistant  Secretary or
by the  officer  or  Trustee  calling  the  meeting  and shall be mailed to each
Trustee at least two days before the meeting,  or shall be telegraphed,  cabled,
or wirelessed to each Trustee at his business address,  or personally  delivered
to him at least one day  before  the  meeting.  Notice of a meeting  need not be
given to any  Trustee if a written  waiver of notice,  executed by him before or
after the meeting,  is filed with the records of the meeting,  or to any Trustee
who attends the meeting without  protesting prior thereto or at its commencement
the lack of notice to him.  A notice or waiver of notice  need not  specify  the
purpose of any


<PAGE>


                                              4


meeting.    The   Trustees   may  meet  by  means  of  a   telephone  conference
circuit  or  similar  communications  equipment  by means of which  all  persons
participating  in the meeting can hear each other,  which  telephone  conference
meeting shall be deemed to have been held at a place  designated by the Trustees
at the meeting. Participation in a telephone conference meeting shall constitute
presence in person at such meeting. Any action required or permitted to be taken
at any meeting of the Trustees may be taken by the Trustees without a meeting if
all the Trustees  consent to the action in writing and the written  consents are
filed with the records of the Trustees' meetings. Such consents shall be treated
as a vote for all purposes.

        SECTION  2.  QUORUM AND MANNER OF  ACTING.  A majority  of the  Trustees
present  in person at any  regular  or special  meeting  of the  Trustees  shall
constitute a quorum for the  transaction of business at such meeting and (except
as otherwise  required by law, the  Declaration  or these  By-Laws) the act of a
majority  of the  Trustees  present  at any such  meeting,  at which a quorum is
present,  shall  be the act of the  Trustees.  In the  absence  of a  quorum,  a
majority of the Trustees present may adjourn the meeting from time to time until
a quorum shall be present. Notice of an adjourned meeting need not be given.

        SECTION 3.  ATTENDANCE  BY  TRUSTEES.  A Trustee  who fails,  during any
fiscal year of the Trust,  to attend at least 75% of the  meetings of the Board,
or who fails to attend at least 75% of the  meetings  of each  Committee  of the
Board of which such  Trustee is a member,  unless such failure was the result of
an illness or incapacity  which,  as  determined by the Board,  is not likely to
materially  interfere with the future performance of the duties of such Trustee,
shall be subject to removal  for cause by vote of  two-thirds  of the  remaining
Trustees. The foregoing shall not be construed to limit in any way the authority
of the Board with respect to removal of Trustees.


                                           ARTICLE V

                                 COMMITTEES AND ADVISORY BOARD

        SECTION 1.  EXECUTIVE  AND OTHER  COMMITTEES.  The Trustees by vote of a
majority  of all the  Trustees  may elect  from  their own  number an  Executive
Committee  to  consist  of not less than three  Trustees  to hold  office at the
pleasure of the Trustees.  While the Trustees are not in session,  the Executive
Committee  shall have the power to conduct the current and ordinary  business of
the Trust,  including the purchase and sale of securities and the designation of
securities  to be delivered  upon  redemption  of Shares of the Trust,  and such
other powers of the Trustees as the Trustees may, from time to time, delegate to
the Executive  Committee  except those powers which by law, the  Declaration  or
these By-Laws the Trustees are prohibited  from so delegating.  The Trustees may
also elect from their own number other  Committees from time to time, the number
comprising such  Committees,  the powers conferred upon the same (subject to the
same  limitations  as with respect to the Executive  Committee)  and the term of
membership on such Committees to be determined by the Trustees. The Trustees may
designate a chairman of any such Committee. In the absence of such designation a
Committee may elect its own chairman.


<PAGE>


                                              5


         SECTION 2. MEETING,  QUORUM AND MANNER OF ACTING.  The Trustees may (i)
provide for stated meetings of any Committee, (ii) specify the manner of calling
and notice  required for special  meetings of any  Committee,  (iii) specify the
number of members of a Committee  required to constitute a quorum and the number
of members of a Committee  required to exercise  specified  powers  delegated to
such  Committee,  (iv)  authorize the making of decisions to exercise  specified
powers by written  assent of the  requisite  number of  members  of a  Committee
without a meeting, and (v) authorize the members of a Committee to meet by means
of a telephone conference circuit.

        Each Committee shall keep regular minutes of its meetings and records of
decisions  taken  without a  meeting  and cause  them to be  recorded  in a book
designated for that purpose and kept in the office of the Trust.

        SECTION 3. ADVISORY BOARD. The Trustees may appoint an Advisory Board to
consist in the first  instance of not less than three  members.  Members of such
Advisory Board shall not be Trustees or officers and need not be Shareholders. A
member of such Advisory  Board shall hold office for such period as the Trustees
may by vote provide and may resign therefrom by a written  instrument  signed by
him which shall take effect upon its  delivery  to the  Trustees.  The  Advisory
Board shall have no legal powers and shall not perform the functions of Trustees
in any manner,  such Advisory Board being intended  merely to act in an advisory
capacity.  Such Advisory  Board shall meet at such times and upon such notice as
the Trustees may by vote provide.

        SECTION 4.  CHAIRMAN.  The Trustees  may, by a majority  vote of all the
Trustees,  elect from  their own number a  Chairman,  to hold  office  until his
successor  shall have been duly elected and  qualified.  The Chairman  shall not
hold any other office. The Chairman may be, but need not be, a Shareholder.  The
Chairman shall preside at all meetings of the Trustees and shall have such other
duties as from time to time may be assigned to him by the Trustees.


                                          ARTICLE VI

                                           OFFICERS

        SECTION 1.  GENERAL  PROVISIONS.  The  officers  of the Trust shall be a
President,  a Treasurer  and a  Secretary,  each of whom shall be elected by the
Trustees. The Trustees may elect or appoint such other officers or agents as the
business of the Trust may require, including one or more Vice Presidents, one or
more Assistant Treasurers,  and one or more Assistant Secretaries.  The Trustees
may  delegate to any officer or committee  the power to appoint any  subordinate
officers or agents.

        SECTION  2.  TERM OF OFFICE  AND  QUALIFICATIONS.  Except  as  otherwise
provided by law, the Declaration or these By-Laws, the President,  the Treasurer
and the Secretary  shall hold office until his respective  successor  shall have
been duly elected and qualified, and all other officers shall hold office at the
pleasure of the Trustees.  The Secretary and Treasurer may be the same person. A
Vice  President and the  Treasurer or a Vice  President and the Secretary may be
the same person,  but the offices of Vice  President,  Secretary  and  Treasurer
shall


<PAGE>


                                              6


not  be  held  by  the  same  person.   The  President  shall not hold any other
office.  Except  as  above  provided,  any two  offices  may be held by the same
person. Any officer may be, but does not need be, a Trustee or Shareholder.

        SECTION 3. REMOVAL.  The Trustees,  at any regular or special meeting of
the  Trustees,  may remove  any  officer  with or  without  cause by a vote of a
majority  of the  Trustees.  Any  officer or agent  appointed  by any officer or
committee  may be removed with or without  cause by such  appointing  officer or
committee.

        SECTION 4. POWERS AND DUTIES OF THE PRESIDENT. The President, unless the
Chairman,  if any,  is so  appointed  by the  Trustees,  shall be the  principal
executive  officer of the Trust.  Subject to the control of the Trustees and any
committee of the Trustees,  the President  shall at all times exercise a general
supervision  and direction  over the affairs of the Trust.  The President  shall
have the power to employ  attorneys and counsel for the Trust and to employ such
subordinate  officers,  agents, clerks and employees as he may find necessary to
transact the business of the Trust.  The President  shall also have the power to
grant,  issue,  execute  or sign  such  powers  of  attorney,  proxies  or other
documents as may be deemed  advisable or  necessary  in the  furtherance  of the
interests of the Trust.  The  President  shall have such other powers and duties
as, from time to time, may be conferred upon or assigned to him by the Trustees.

        SECTION  5.  POWERS  AND DUTIES OF VICE  PRESIDENTS.  In the  absence or
disability of the  President,  the Vice President or, if there are more than one
Vice President,  any Vice President designated by the Trustees shall perform all
the duties and may exercise any of the powers of the  President,  subject to the
control of the Trustees.  Each Vice President shall perform such other duties as
may be assigned to him from time to time by the Trustees or the President.

        SECTION 6. POWERS AND DUTIES OF THE  TREASURER.  The Treasurer  shall be
the principal financial and accounting officer of the Trust. The Treasurer shall
deliver all funds of the Trust  which may come into his hands to such  custodian
as the Trustees may employ  pursuant to Article X hereof.  The  Treasurer  shall
render a statement  of condition of the finances of the Trust to the Trustees as
often as they shall require the same and shall in general perform all the duties
incident to the office of  Treasurer  and such other duties as from time to time
may be assigned to him by the Trustees.  The Treasurer shall give a bond for the
faithful discharge of his duties, if required to do so by the Trustees,  in such
sum and with such surety or sureties as the Trustees shall require.

        SECTION 7. POWERS AND DUTIES OF THE SECRETARY.  The Secretary shall keep
the minutes of all meetings of the  Shareholders  in proper  books  provided for
that purpose; shall keep the minutes of all meetings of the Trustees; shall have
custody of the seal of the Trust;  and shall have  charge of the Share  transfer
books,  lists and  records  unless  the same are in the  charge of the  Transfer
Agent.  The  Secretary  shall attend to the giving and serving of all notices by
the Trust in accordance  with the provisions of these By-Laws and as required by
law;  and  subject to these  By-Laws,  shall in general  perform  all the duties
incident to the office of  Secretary  and such other duties as from time to time
may be assigned to him by the Trustees.


<PAGE>


                                              7

         SECTION 8. POWERS AND DUTIES OF ASSISTANT TREASURERS. In the absence or
disability of the Treasurer,  any Assistant Treasurer designated by the Trustees
shall  perform  all the  duties,  and may  exercise  any of the  powers,  of the
Treasurer. Each Assistant Treasurer shall perform such other duties as from time
to time may be assigned to him by the Trustees.  Each Assistant  Treasurer shall
give a bond for the faithful  discharge  of his duties,  if required to do so by
the Trustees, in such sum and with such surety or sureties as the Trustees shall
require.

        SECTION 9. POWERS AND DUTIES OF ASSISTANT SECRETARIES. In the absence or
disability of the Secretary,  any Assistant Secretary designated by the Trustees
shall  perform all of the duties,  and may  exercise  any of the powers,  of the
Secretary. Each Assistant Secretary shall perform such other duties as from time
to time may be assigned to him by the Trustees.

        SECTION 10.  COMPENSATION  OF OFFICERS  AND  TRUSTEES AND MEMBERS OF THE
ADVISORY BOARD.  Subject to any applicable law or provision of the  Declaration,
the  compensation of the officers and Trustees and members of the Advisory Board
shall be fixed from time to time by the Trustees or, in the case of officers, by
any committee of officers upon whom such power may be conferred by the Trustees.
No officer shall be prevented from receiving such  compensation  as such officer
by reason of the fact that he is also a Trustee.


                                          ARTICLE VII

                                          FISCAL YEAR

        The fiscal year of each series of the Trust shall be  determined  by the
Trustees, and the Trustees may from time to time change any fiscal year.


                                         ARTICLE VIII

                                             SEAL

        The Trustees may adopt a seal which shall be in such form and shall have
such inscription thereon as the Trustees may from time to time prescribe.

                                          ARTICLE IX

                                       WAIVERS OF NOTICE

        Whenever any notice is required to be given by law, the  Declaration  or
these  By-Laws,  a waiver  thereof in  writing,  signed by the person or persons
entitled to such notice,  whether before or after the time stated therein, shall
be deemed equivalent thereto. A notice shall be deemed to have been telegraphed,
cabled  or  wirelessed  for the  purposes  of  these  By-Laws  when it has  been
delivered to a representative  of any telegraph,  cable or wireless company with
instruction  that it be telegraphed,  cabled or wirelessed.  Any notice shall be
deemed  to be given at the time  when  the same  shall be  mailed,  telegraphed,
cabled or wirelessed.


<PAGE>


                                              8

                                           ARTICLE X

                                           CUSTODIAN

        SECTION 1.  APPOINTMENT  AND  DUTIES.  The  Trustees  shall at all times
employ a bank or trust company having a capital,  surplus and undivided  profits
of at least  $5,000,000 as custodian with authority as its agent, but subject to
such  restrictions,  limitations  and  other  requirements,  if  any,  as may be
contained in the Declaration, these By-Laws and the 1940 Act:

               (i) to hold the  securities  owned by the Trust and  deliver  the
               same upon  written  order;
               (ii) to receive  and  receipt for any monies due to the Trust and
               deposit  the same in its own banking department  or elsewhere  as
               the  Trustees  may direct;
               (iii) to disburse  such funds upon orders or vouchers;
               (iv)  if  authorized  by  the  Trustees,  to  keep  the books and
               accounts  of  the  Trust  and  furnish  clerical  and  accounting
               services;  and
               (v) if authorized by the  Trustees,  to compute the net income of
               the Trust and the net asset value of Shares;

all upon such basis of compensation as may be agreed upon between the Trustees
and the custodian.

        The  Trustees  may also  authorize  the  custodian to employ one or more
sub-custodians from time to time to perform such of the acts and services of the
custodian  and upon such terms and  conditions as may be agreed upon between the
custodian and such  sub-custodian  and approved by the Trustees.  Subject to the
approval  of the  Trustees,  the  custodian  may enter  into  arrangements  with
securities  depositories.  All  such  custodial,  sub-custodial  and  depository
arrangements  shall be subject to, and comply with,  the  provisions of the 1940
Act and the rules and regulations promulgated thereunder.

        SECTION  2.  CENTRAL   CERTIFICATE   SYSTEM.   Subject  to  such  rules,
regulations and orders as the Commission may adopt,  the Trustees may direct the
custodian to deposit all or any part of the  securities  owned by the Trust in a
system  for  the  central  handling  of  securities  established  by a  national
securities  exchange or a national  securities  association  registered with the
Commission under the Securities  Exchange Act of 1934, or with such other person
as may be permitted by the Commission,  or otherwise in accordance with the 1940
Act,  pursuant to which system all securities of any particular  class or series
of any issuer  deposited  within the system are treated as  fungible  and may be
transferred or pledged by bookkeeping  entry without  physical  delivery of such
securities,  provided that all such deposits shall be subject to withdrawal only
upon the order of the Trust or its custodian.

        SECTION 3.  ACCEPTANCE OF RECEIPTS IN LIEU OF  CERTIFICATES.  Subject to
such rules, regulations and orders as the Commission may adopt, the Trustees may
direct the  custodian  to accept  written  receipts or other  written  evidences
indicating  purchases  of  securities  held in  book-entry  form in the  Federal
Reserve


<PAGE>


                                              9
System in accordance with  regulations  promulgated by the Board of Governors of
the  Federal  Reserve  System  and the local  Federal  Reserve  Banks in lieu of
receipt of certificates representing such securities.


                                          ARTICLE XI

                                          AMENDMENTS

        These By-Laws, or any of them, may be altered,  amended or repealed,  or
new  By-Laws may be adopted (a) by the  Shareholders  by a Majority  Shareholder
Vote, or (b) by the Trustees,  provided, however, that no By-Law may be amended,
adopted or  repealed  by the  Trustees  if such  amendment,  adoption  or repeal
requires,  pursuant to law,  the  Declaration  or these  By-Laws,  a vote of the
Shareholders.



                           DOMINI INSTITUTIONAL TRUST


         The undersigned hereby constitutes and appoints Philip W. Coolidge,
John R. Elder, David G. Danielson, Linda T. Gibson, Brian J. Hall, Thomas M.
Lenz, Molly S. Mugler, Barbara M. O'Dette, Andres E. Saldana and Daniel E. Shea
and each of them, with full powers of substitution as his true and lawful
attorneys and agents to execute in his name and on his behalf in any and all
capacities the Registration Statement on Form N-1A, and any and all amendments
thereto, filed by Domini Institutional Trust on behalf of the Domini
Institutional Social Equity Fund (the "Trust") with the Securities and Exchange
Commission under the Investment Company Act of 1940 and any and all instruments
which such attorneys and agents, or any of them, deem necessary or advisable to
enable the Trust to comply with such Act, the rules, regulations and
requirements of the Securities and Exchange Commission, and the securities or
Blue Sky laws of any state or other juristiction, and the undersigned hereby
ratifies and confirms as his own act and deed any and all that such attorneys
and agents, or any of them, shall do or cause to be done by virtue hereof. Any
one of such attorneys and agents have, and may exercise, all of the powers
hereby conferred.

        IN WITNESS WHEREOF, the undersigned has hereunto set her hand this 8th
day of April, 1996.

                                                 /S/ AMY L. DOMINI
                                                 -------------------------------
                                                 AMY L. DOMINI   


<PAGE>
                           DOMINI INSTITUTIONAL TRUST


         The undersigned hereby constitutes and appoints Philip W. Coolidge,
John R. Elder, David G. Danielson, Linda T. Gibson, Brian J. Hall, Thomas M.
Lenz, Molly S. Mugler, Barbara M. O'Dette, Andres E. Saldana and Daniel E. Shea
and each of them, with full powers of substitution as his true and lawful
attorneys and agents to execute in his name and on his behalf in any and all
capacities the Registration Statement on Form N-1A, and any and all amendments
thereto, filed by Domini Institutional Trust on behalf of the Domini
Institutional Social Equity Fund (the "Trust") with the Securities and Exchange
Commission under the Investment Company Act of 1940 and the Securities Act of
1933 and any and all instruments which such attorneys and agents, or any of
them, deem necessary or advisable to enable the Trust to comply with such Acts,
the rules, regulations and requirements of the Securities and Exchange
Commission, and the securities or Blue Sky laws of any state or other
juristiction, and the undersigned hereby ratifies and confirms as his own act
and deed any and all that such attorneys and agents, or any of them, shall do or
cause to be done by virtue hereof. Any one of such attorneys and agents have,
and may exercise, all of the powers hereby conferred.

        IN WITNESS WHEREOF, the undersigned has hereunto set his hand this 8th
day of April, 1996.


                                                 /S/ ALLEN M. MAYES
                                                 -------------------------------
                                                 ALLEN M. MAYES


<PAGE>
                           DOMINI INSTITUTIONAL TRUST


         The undersigned hereby constitutes and appoints Philip W. Coolidge,
John R. Elder, David G. Danielson, Linda T. Gibson, Brian J. Hall, Thomas M.
Lenz, Molly S. Mugler, Barbara M. O'Dette, Andres E. Saldana and Daniel E. Shea
and each of them, with full powers of substitution as his true and lawful
attorneys and agents to execute in his name and on his behalf in any and all
capacities the Registration Statement on Form N-1A, and any and all amendments
thereto, filed by Domini Institutional Trust on behalf of the Domini
Institutional Social Equity Fund (the "Trust") with the Securities and Exchange
Commission under the Investment Company Act of 1940 and the Securities Act of
1933 and any and all instruments which such attorneys and agents, or any of
them, deem necessary or advisable to enable the Trust to comply with such Acts,
the rules, regulations and requirements of the Securities and Exchange
Commission, and the securities or Blue Sky laws of any state or other
juristiction, and the undersigned hereby ratifies and confirms as his own act
and deed any and all that such attorneys and agents, or any of them, shall do or
cause to be done by virtue hereof. Any one of such attorneys and agents have,
and may exercise, all of the powers hereby conferred.

        IN WITNESS WHEREOF, the undersigned has hereunto set his hand this 8th
day of April, 1996.


                                                 /S/ TIMOTHY SMITH
                                                 -------------------------------
                                                 TIMOTHY SMITH 


<PAGE>
                           DOMINI INSTITUTIONAL TRUST


         The undersigned hereby constitutes and appoints Philip W. Coolidge,
John R. Elder, David G. Danielson, Linda T. Gibson, Brian J. Hall, Thomas M.
Lenz, Molly S. Mugler, Barbara M. O'Dette, Andres E. Saldana and Daniel E. Shea
and each of them, with full powers of substitution as his true and lawful
attorneys and agents to execute in his name and on his behalf in any and all
capacities the Registration Statement on Form N-1A, and any and all amendments
thereto, filed by Domini Institutional Trust on behalf of the Domini
Institutional Social Equity Fund (the "Trust") with the Securities and Exchange
Commission under the Investment Company Act of 1940 and the Securities Act of
1933 and any and all instruments which such attorneys and agents, or any of
them, deem necessary or advisable to enable the Trust to comply with such Acts,
the rules, regulations and requirements of the Securities and Exchange
Commission, and the securities or Blue Sky laws of any state or other
juristiction, and the undersigned hereby ratifies and confirms as his own act
and deed any and all that such attorneys and agents, or any of them, shall do or
cause to be done by virtue hereof. Any one of such attorneys and agents have,
and may exercise, all of the powers hereby conferred.

        IN WITNESS WHEREOF, the undersigned has hereunto set his hand this 8th
day of April, 1996.


                                                 /S/ FREDERICK C. WILLIAMSON,SR.
                                                 -------------------------------
                                                 FREDERICK C. WILLIAMSON, Sr.


<PAGE>
                           DOMINI INSTITUTIONAL TRUST


         The undersigned hereby constitutes and appoints Philip W. Coolidge,
David G. Danielson, Linda T. Gibson, Brian J. Hall, Thomas M. Lenz, Molly S.
Mugler, Barbara M. O'Dette, Andres E. Saldana and Daniel E. Shea and each of
them, with full powers of substitution as his true and lawful attorneys and
agents to execute in his name and on his behalf in any and all capacities the
Registration Statement on Form N-1A, and any and all amendments thereto, filed
by Domini Institutional Trust on behalf of the Domini Institutional Social
Equity Fund (the "Trust") with the Securities and Exchange Commission under the
Investment Company Act of 1940 and the Securities Act of 1933 and any and all
instruments which such attorneys and agents, or any of them, deem necessary or
advisable to enable the Trust to comply with such Acts, the rules, regulations
and requirements of the Securities and Exchange Commission, and the securities
or Blue Sky laws of any state or other juristiction, and the undersigned hereby
ratifies and confirms as his own act and deed any and all that such attorneys
and agents, or any of them, shall do or cause to be done by virtue hereof. Any
one of such attorneys and agents have, and may exercise, all of the powers
hereby conferred.

        IN WITNESS WHEREOF, the undersigned has hereunto set his hand this 8th
day of April, 1996.


                                                 /S/ JOHN R. ELDER
                                                 -------------------------------
                                                 JOHN R. ELDER
<PAGE>









                                  DOMINI INSTITUTIONAL TRUST


        The undersigned hereby constitutes and appoints Philip W. Coolidge, John
R. Elder, Linda T. Gibson, Molly S. Mugler, Roger P. Joseph, Mari A. Wilson and
each of them, with full powers of substitution as his true and lawful attorneys
and agents to execute in his name and on his behalf in any and all capacities
the Registration Statement on Form N-1A, and any and all amendments thereto,
filed by Domini Institutional Trust on behalf of the Domini Institutional Social
Equity Fund (the "Trust") with the Securities and Exchange Commission under the
Investment Company Act of 1940 and any and all instruments which such attorneys
and agents, or any of them, deem necessary or advisable to enable the Trust to
comply with such Act, the rules, regulations and requirements of the Securities
and Exchange Commission, and the securities or Blue Sky laws of any state or
other juristiction, and the undersigned hereby ratifies and confirms as his own
act and deed any and all that such attorneys and agents, or any of them, shall
do or cause to be done by virtue hereof. Any one of such attorneys and agents
have, and may exercise, all of the powers hereby conferred.

        IN WITNESS WHEREOF, the undersigned has hereunto set his hand this
______ day of _______, 1997.



                                                   /s/ William Osborn
                                                   William Osborn

DSI308



<PAGE>


                                  DOMINI INSTITUTIONAL TRUST


        The undersigned hereby constitutes and appoints Philip W. Coolidge, John
R. Elder, Linda T. Gibson, Molly S. Mugler, Roger P. Joseph, Mari A. Wilson and
each of them, with full powers of substitution as his true and lawful attorneys
and agents to execute in his name and on his behalf in any and all capacities
the Registration Statement on Form N-1A, and any and all amendments thereto,
filed by Domini Institutional Trust on behalf of the Domini Institutional Social
Equity Fund (the "Trust") with the Securities and Exchange Commission under the
Investment Company Act of 1940 and any and all instruments which such attorneys
and agents, or any of them, deem necessary or advisable to enable the Trust to
comply with such Act, the rules, regulations and requirements of the Securities
and Exchange Commission, and the securities or Blue Sky laws of any state or
other juristiction, and the undersigned hereby ratifies and confirms as his own
act and deed any and all that such attorneys and agents, or any of them, shall
do or cause to be done by virtue hereof. Any one of such attorneys and agents
have, and may exercise, all of the powers hereby conferred.

        IN  WITNESS  WHEREOF, the undersigned has hereunto set her hand this  13
day of June, 1997.



                                                   /s/ Karen Paul
                                                   Karen Paul

DSI308

<PAGE>

                                 DOMINI SOCIAL INDEX PORTFOLIO

         The undersigned hereby constitutes and appoints Peter D. Kinder, Steven
D. Lyndenberg,  John R. Elder, Thomas M. Lenz, Molly S. Mugler, Linda T. Gibson,
Andres E. Saldana,  Brian J. Hall,  David G.  Danielson and Daniel E. Shea,  and
each of them, with full powers of substitution as his true and lawful  attorneys
and agents to  execute  in his name and on his behalf in any and all  capacities
the  Registration  Statements on Form N-1A, and any and all amendments  thereto,
filed by Domini Social Euqity Fund, Domini  Institutional  Trust,  DEVCAP Trust,
and Green Century Funds (each a "Trust"), or the Registration Statement(s),  and
any and all  amendments  thereto,  filed by any other investor in any registered
investment  company in which any of the Trusts  invest,  with the Securities and
Exchange Commission under the Investment Company Act of 1940, as amended, and/or
the Securities Act of 1933, as amended,  and any and all instruments  which such
attorneys and agents, or any of them, deem necessary or advisable to enable each
Trust to comply with such Acts, the rules,  regulations and  requirements of the
Securities and Exchange  Commission,  and the securities or Blue Sky laws of any
state or other jurisdiction, and the undersigned hereby ratifies and confirms as
his own act and deed any and all acts that such attorneys and agents,  or any of
them,  shall do or cause to be done by virtue hereof.  Any one of such attorneys
and agents have, and may exercise, all of the powers hereby conferred.

         IN WITNESS WHEREOF,  the undersigned has hereunto set her hand this 8th
day of April, 1996.



                                            /s/ Amy L. Domini
                                            Amy L. Domini

DSI166B


<PAGE>






                                 DOMINI SOCIAL INDEX PORTFOLIO

         The undersigned hereby constitutes and appoints Peter D. Kinder, Steven
D.  Lyndenberg,  Thomas M. Lenz,  Molly S. Mugler,  Linda T.  Gibson,  Andres E.
Saldana, Brian J. Hall, David G. Danielson and Daniel E. Shea, and each of them,
with full powers of substitution as his true and lawful  attorneys and agents to
execute in his name and on his behalf in any and all capacities the Registration
Statements on Form N-1A,  and any and all  amendments  thereto,  filed by Domini
Social Euqity Fund, Domini  Institutional Trust, DEVCAP Trust, and Green Century
Funds  (each  a  "Trust"),  or the  Registration  Statement(s),  and any and all
amendments  thereto,  filed by any other investor in any  registered  investment
company in which any of the Trusts  invest,  with the  Securities  and  Exchange
Commission  under the  Investment  Company Act of 1940,  as amended,  and/or the
Securities  Act of 1933,  as  amended,  and any and all  instruments  which such
attorneys and agents, or any of them, deem necessary or advisable to enable each
Trust to comply with such Acts, the rules,  regulations and  requirements of the
Securities and Exchange  Commission,  and the securities or Blue Sky laws of any
state or other jurisdiction, and the undersigned hereby ratifies and confirms as
his own act and deed any and all acts that such attorneys and agents,  or any of
them,  shall do or cause to be done by virtue hereof.  Any one of such attorneys
and agents have, and may exercise, all of the powers hereby conferred.

         IN WITNESS WHEREOF,  the undersigned has hereunto set his hand this 8th
day of April, 1996.



                                            /s/ John R. Elder
                                            John R. Elder

DSI166B


<PAGE>






                                 DOMINI SOCIAL INDEX PORTFOLIO

         The undersigned hereby constitutes and appoints Peter D. Kinder, Steven
D. Lyndenberg,  John R. Elder, Thomas M. Lenz, Molly S. Mugler, Linda T. Gibson,
Andres E. Saldana,  Brian J. Hall,  David G.  Danielson and Daniel E. Shea,  and
each of them, with full powers of substitution as his true and lawful  attorneys
and agents to  execute  in his name and on his behalf in any and all  capacities
the  Registration  Statements on Form N-1A, and any and all amendments  thereto,
filed by Domini Social Equity Fund, Domini  Institutional  Trust,  DEVCAP Trust,
and Green Century Funds (each a "Trust"), or the Registration Statement(s),  and
any and all  amendments  thereto,  filed by any other investor in any registered
investment  company in which any of the Trusts  invest,  with the Securities and
Exchange Commission under the Investment Company Act of 1940, as amended, and/or
the Securities Act of 1933, as amended,  and any and all instruments  which such
attorneys and agents, or any of them, deem necessary or advisable to enable each
Trust to comply with such Acts, the rules,  regulations and  requirements of the
Securities and Exchange  Commission,  and the securities or Blue Sky laws of any
state or other jurisdiction, and the undersigned hereby ratifies and confirms as
his own act and deed any and all acts that such attorneys and agents,  or any of
them,  shall do or cause to be done by virtue hereof.  Any one of such attorneys
and agents have, and may exercise, all of the powers hereby conferred.

         IN WITNESS WHEREOF,  the undersigned has hereunto set his hand this 8th
day of April, 1996.



                                            /s/ Allen M. Mayes
                                            Allen M. Mayes

DSI166B


<PAGE>






                                 DOMINI SOCIAL INDEX PORTFOLIO

         The undersigned hereby constitutes and appoints Peter D. Kinder, Steven
D. Lyndenberg,  John R. Elder, Thomas M. Lenz, Molly S. Mugler, Linda T. Gibson,
Andres E. Saldana,  Brian J. Hall,  David G.  Danielson and Daniel E. Shea,  and
each of them, with full powers of substitution as his true and lawful  attorneys
and agents to  execute  in his name and on his behalf in any and all  capacities
the  Registration  Statements on Form N-1A, and any and all amendments  thereto,
filed by Domini Social Euqity Fund, Domini  Institutional  Trust,  DEVCAP Trust,
and Green Century Funds (each a "Trust"), or the Registration Statement(s),  and
any and all  amendments  thereto,  filed by any other investor in any registered
investment  company in which any of the Trusts  invest,  with the Securities and
Exchange Commission under the Investment Company Act of 1940, as amended, and/or
the Securities Act of 1933, as amended,  and any and all instruments  which such
attorneys and agents, or any of them, deem necessary or advisable to enable each
Trust to comply with such Acts, the rules,  regulations and  requirements of the
Securities and Exchange  Commission,  and the securities or Blue Sky laws of any
state or other jurisdiction, and the undersigned hereby ratifies and confirms as
his own act and deed any and all acts that such attorneys and agents,  or any of
them,  shall do or cause to be done by virtue hereof.  Any one of such attorneys
and agents have, and may exercise, all of the powers hereby conferred.

         IN WITNESS WHEREOF,  the undersigned has hereunto set his hand this 8th
day of April, 1996.



                                            /s/ Timothy Smith
                                            Timothy Smith

DSI166B


<PAGE>






                                 DOMINI SOCIAL INDEX PORTFOLIO

         The undersigned hereby constitutes and appoints Peter D. Kinder, Steven
D. Lyndenberg,  John R. Elder, Thomas M. Lenz, Molly S. Mugler, Linda T. Gibson,
Andres E. Saldana,  Brian J. Hall,  David G.  Danielson and Daniel E. Shea,  and
each of them, with full powers of substitution as his true and lawful  attorneys
and agents to  execute  in his name and on his behalf in any and all  capacities
the  Registration  Statements on Form N-1A, and any and all amendments  thereto,
filed by Domini Social Euqity Fund, Domini  Institutional  Trust,  DEVCAP Trust,
and Green Century Funds (each a "Trust"), or the Registration Statement(s),  and
any and all  amendments  thereto,  filed by any other investor in any registered
investment  company in which any of the Trusts  invest,  with the Securities and
Exchange Commission under the Investment Company Act of 1940, as amended, and/or
the Securities Act of 1933, as amended,  and any and all instruments  which such
attorneys and agents, or any of them, deem necessary or advisable to enable each
Trust to comply with such Acts, the rules,  regulations and  requirements of the
Securities and Exchange  Commission,  and the securities or Blue Sky laws of any
state or other jurisdiction, and the undersigned hereby ratifies and confirms as
his own act and deed any and all acts that such attorneys and agents,  or any of
them,  shall do or cause to be done by virtue hereof.  Any one of such attorneys
and agents have, and may exercise, all of the powers hereby conferred.

         IN WITNESS WHEREOF,  the undersigned has hereunto set his hand this 8th
day of April, 1996.



                                            /s/ Frederick S. Williamson, Sr.
                                            Frederick C. Williamson, Sr.


DSI166B


<PAGE>






                                 DOMINI SOCIAL INDEX PORTFOLIO


         The  undersigned  hereby  constitutes  and appoints Philip W. Coolidge,
John R. Elder, Linda T. Gibson, Molly S. Mugler, Roger P. Joseph, Mari A. Wilson
and each of them,  with  full  powers  of  substitution  as his true and  lawful
attorneys  and  agents to  execute  in his name and on his behalf in any and all
capacities the Registration  Statement on Form N-1A,  and any and all amendments
thereto, filed by Domini Social Index Portfolio Portfolio (the "Portfolio") with
the Securities and Exchange  Commission under the Investment Company Act of 1940
and any and all  instruments  which such  attorneys and agents,  or any of them,
deem necessary or advisable to enable the Portfolio to comply with such Act, the
rules,  regulations and requirements of the Securities and Exchange  Commission,
and the securities or Blue Sky laws of any state or other juristiction,  and the
undersigned  hereby  ratifies  and  confirms as his own act and deed any and all
that such attorneys and agents,  or any of them, shall do or cause to be done by
virtue hereof. Any one of such attorneys and agents have, and may exercise,  all
of the powers hereby conferred.

         IN WITNESS  WHEREOF,  the  undersigned  has  hereunto set his hand this
______ day of _______, 1997.



                                                   /s/ William Osborn
                                                   William Osborn

DSI308




<TABLE> <S> <C>


<ARTICLE> 6
<LEGEND>
This schedule contains summary financial information extracted from semi-annual
report dated January 31, 1997 of Domini Institutional Social Equity Fund and is
qualified in its entirety by reference to such report.
</LEGEND>
<CIK> 0001010297
<NAME> DOMINI INSTITUTIONAL SOCIAL EQUITY FUND
       
<S>                             <C>
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          JUL-31-1997
<PERIOD-START>                             AUG-01-1996
<PERIOD-END>                               JAN-31-1996
<INVESTMENTS-AT-COST>                       35,987,674
<INVESTMENTS-AT-VALUE>                      40,063,413
<RECEIVABLES>                                        0
<ASSETS-OTHER>                                       0
<OTHER-ITEMS-ASSETS>                                 0
<TOTAL-ASSETS>                              40,063,413
<PAYABLE-FOR-SECURITIES>                             0
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                        1,190
<TOTAL-LIABILITIES>                              1,190
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                    35,903,133
<SHARES-COMMON-STOCK>                        3,335,508
<SHARES-COMMON-PRIOR>                        1,872,933
<ACCUMULATED-NII-CURRENT>                       18,695
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                         64,659
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                     4,075,739
<NET-ASSETS>                                40,062,226
<DIVIDEND-INCOME>                                    0
<INTEREST-INCOME>                                    0
<OTHER-INCOME>                                 144,874
<EXPENSES-NET>                                   7,106
<NET-INVESTMENT-INCOME>                        137,768
<REALIZED-GAINS-CURRENT>                        52,392
<APPREC-INCREASE-CURRENT>                    4,872,431
<NET-CHANGE-FROM-OPS>                        5,062,591
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                      142,610
<DISTRIBUTIONS-OF-GAINS>                         2,129
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                      1,608,834
<NUMBER-OF-SHARES-REDEEMED>                    154,022
<SHARES-REINVESTED>                              7,763
<NET-CHANGE-IN-ASSETS>                      22,089,332
<ACCUMULATED-NII-PRIOR>                         23,536
<ACCUMULATED-GAINS-PRIOR>                       14,395
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                                0
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                 75,316
<AVERAGE-NET-ASSETS>                        24,197,524
<PER-SHARE-NAV-BEGIN>                             9.60
<PER-SHARE-NII>                                  0.057
<PER-SHARE-GAIN-APPREC>                          2.421
<PER-SHARE-DIVIDEND>                             0.067
<PER-SHARE-DISTRIBUTIONS>                        0.001
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                              12.01
<EXPENSE-RATIO>                                   0.39
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
        

</TABLE>


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