EATON VANCE SPECIAL INVESTMENT TRUST
497, 1995-04-07
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<PAGE>
                      EV MARATHON SPECIAL EQUITIES FUND

    EV MARATHON  SPECIAL  EQUITIES  FUND (THE  "FUND") IS A MUTUAL FUND  SEEKING
GROWTH OF CAPITAL.  THE FUND INVESTS ITS ASSETS IN SPECIAL INVESTMENT  PORTFOLIO
(THE  "PORTFOLIO"),  A DIVERSIFIED  OPEN-END  INVESTMENT COMPANY HAVING THE SAME
INVESTMENT  OBJECTIVE  AS THE FUND,  RATHER  THAN BY DIRECTLY  INVESTING  IN AND
MANAGING ITS OWN PORTFOLIO OF SECURITIES AS WITH HISTORICALLY  STRUCTURED MUTUAL
FUNDS.  THE FUND IS A SERIES  OF  EATON  VANCE  SPECIAL  INVESTMENT  TRUST  (THE
"TRUST").

    Shares of the Fund are not  deposits or  obligations  of, or  guaranteed  or
endorsed  by,  any bank or other  insured  depository  institution,  and are not
federally  insured by the Federal  Deposit  Insurance  Corporation,  the Federal
Reserve  Board or any  other  government  agency.  Shares  of the  Fund  involve
investment risks,  including fluctuations in value and the possible loss of some
or all of the principal investment.

    This Prospectus is designed to provide you with  information you should know
before investing.  Please retain this document for future reference. A Statement
of Additional Information dated April 1, 1995 for the Fund, as supplemented from
time to time, has been filed with the Securities and Exchange  Commission and is
incorporated  herein by reference.  This Statement of Additional  Information is
available  without  charge from the Fund's  principal  underwriter,  Eaton Vance
Distributors Inc. (the "Principal  Underwriter"),  24 Federal Street, Boston, MA
02110 (telephone (800) 225-6265).  The Portfolio's  investment adviser is Boston
Management and Research (the "Investment Adviser"), a wholly-owned subsidiary of
Eaton Vance  Management,  and Eaton Vance Management is the  administrator  (the
"Administrator")  of the Fund.  The  offices of the  Investment  Adviser and the
Administrator are located at 24 Federal Street, Boston, MA 02110.

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    THESE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE SECURI-
     TIES 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 PROS-
      PECTUS. ANY REPRESENTATION TO THE CONTRARY IS A CRIMINAL OFFENSE.
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>

                                                   PAGE                                                 PAGE
<S>                                                 <C> <C>                                              <C>
   
Shareholder and Fund Expenses .....................   2  How to Buy Fund Shares ........................  12
The Fund's Financial Highlights ...................   3  How to Redeem Fund Shares .....................  13
The Fund's Investment Objective ...................   4  Reports to Shareholders .......................  15
How the Fund and the Portfolio Invest                    The Lifetime Investing Account/Distribution
  their Assets; Investment Risks ..................   4    Options .....................................  15
Organization of the Fund and the Portfolio ........   5  The Eaton Vance Exchange Privilege ............  16
Management of the Fund and the Portfolio ..........   7  Eaton Vance Shareholder Services ..............  17
Distribution Plan .................................   9  Distributions and Taxes .......................  18
Valuing Fund Shares ...............................  11  Performance Information .......................  19
</TABLE>
    

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                        PROSPECTUS DATED APRIL 1, 1995

<PAGE>

SHAREHOLDER AND FUND EXPENSES \1/
- --------------------------------------------------------------------------------

   
SHAREHOLDER TRANSACTION EXPENSES
  Sales Charges Imposed on Purchases of Shares                             None
  Sales Charges Imposed on Reinvested Distributions                        None
  Redemption Fees                                                          None
  Fees to Exchange Shares                                                  None
  Range of Declining Contingent Deferred Sales
    Charges Imposed on Redemptions During the First Seven Years (as a percentage
    of redemption proceeds exclusive of all reinvestments
    and capital appreciation in the account)\2/                      5.00% - 0%
ANNUAL FUND AND ALLOCATED PORTFOLIO OPERATING EXPENSES
  (as a percentage of average daily net assets)
  Investment Adviser Fee                                                0.625%
  Rule 12b-1 Distribution (and Service) Fees\3/                         0.770%
  Other Expenses                                                        0.315%
                                                                     --------
      Total Operating Expenses                                          1.710%
                                                                     ========

EXAMPLE                                                   1 YEAR       3 YEARS
                                                          ------       -------
An  investor  would pay the  following  contingent  deferred  sales  charge  and
expenses on a $1,000 investment, assuming (a) 5% annual return and (b)
redemption at the end of each time period:                  $67          $94
An investor would pay the following expenses on
the same investment, assuming (a) 5% annual return
and (b) no redemptions:                                     $17          $54

Notes:

\1/ The  purpose of the above table and Example is to  summarize  the  aggregate
    expenses  of  the  Fund  and  the  Portfolio  and  to  assist  investors  in
    understanding the various costs and expenses that investors in the Fund will
    bear  directly or  indirectly.  The Trustees of the Trust  believe that over
    time the aggregate per share  expenses of the Fund and the Portfolio  should
    be approximately  equal to the per share expenses which the Fund would incur
    if the Trust  retained the services of an investment  adviser and the assets
    of the Fund were invested  directly in the type of securities  being held by
    the  Portfolio.  Because the Fund does not yet have a  sufficient  operating
    history,  the percentages  indicated as Annual Fund and Allocated  Portfolio
    Operating  Expenses in the table and the amounts included in the Example are
    based on the Fund's and the Portfolio's  projected fees and expenses for the
    current  fiscal year ending  December  31, 1995.  The Example  should not be
    considered a  representation  of past or future expenses and actual expenses
    may be greater or less than those  shown.  The  Example  assumes a 5% annual
    return  and the Fund's  actual  performance  may result in an annual  return
    greater or less than 5%. For further  information  regarding the expenses of
    both the Fund and the  Portfolio,  see "The  Fund's  Financial  Highlights",
    "Organization  of the Fund and the  Portfolio",  "Management of the Fund and
    the  Portfolio"  and "How to Redeem  Fund  Shares".  Because  the Fund makes
    payments under its  Distribution  Plan adopted under Rule 12b-1, a long-term
    shareholder  may pay  more  than  the  economic  equivalent  of the  maximum
    front-end  sales charge  permitted by a rule of the National  Association of
    Securities Dealers, Inc. See "Distribution Plan".

\2/ No contingent  deferred sales charge is imposed on (a) shares purchased more
    than six years  prior to the  redemption,  (b) shares  acquired  through the
    reinvestment  of  distributions  or (c) any  appreciation  in value of other
    shares in the account (see "How to Redeem Fund Shares"),  and no such charge
    is imposed on exchanges of Fund shares for shares of one or more other funds
    listed under "The Eaton Vance Exchange Privilege".

\3/ The percentage has been restated  because the Fund expects to begin accruing
    for its service fee payments during the quarter ending September 30, 1995.

\4/ Other investment companies with different distribution arrangements and fees
    are investing in the Portfolio and  additional  such  companies may do so in
    the future. See "Organization of the Fund and the Portfolio".
    

THE FUND'S FINANCIAL HIGHLIGHTS
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The  following  information  should  be read in  conjunction  with  the  audited
financial statements included in the Statement of Additional Information, all of
which has been so  included  in  reliance  upon the  report of Coopers & Lybrand
L.L.P.,  independent  accountants,  as experts in accounting and auditing, which
report  is  contained  in  the  Statement  of  Additional  Information.  Further
information  regarding  the  performance  of the Fund is contained in the Fund's
annual report to shareholders which may be obtained without charge by contacting
the Principal Underwriter.
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FOR THE PERIOD FROM THE START OF BUSINESS, AUGUST  22, 1994, TO DECEMBER 31,
1994

NET ASSET VALUE, beginning of period ...........................     $ 10.000
                                                                     --------

INCOME FROM INVESTMENT OPERATIONS:
  Net investment income (loss) .................................     $ (0.021)
  Net realized and unrealized gain (loss) on investments .......       (0.169)
                                                                     --------
    Total income (loss) from investment operations .............     $ (0.190)
                                                                     --------
NET ASSET VALUE, end of period .................................     $  9.810
                                                                     ========
TOTAL RETURN\1/ ................................................       (1.90)%
RATIOS/SUPPLEMENTAL DATA:*
  Net assets, end of period (000's omitted) ....................         623
  Ratio of net expenses to average daily net assets\2/ .........        3.05%+
  Ratio of net investment income (loss) to
    average daily net assets ...................................       (2.00)%+

*The expenses  related to the  operation of the Fund  reflect an  allocation  of
 expenses to the Administrator. Had such action not been taken, the ratios would
 have been as follows:

RATIOS (to average daily net assets)
Expenses ..................................................             9.55%+
Net investment income (loss) ..............................            (8.50)%+

+   Computed on an annualized basis.
\1/ Total return is calculated assuming a purchase at the net asset value on the
    first  day and a sale at the net asset  value on the last day of the  period
    reported. Dividends and distributions,  if any, are assumed to be reinvested
    at the net asset value on the record date.
\2/ Includes  the  Fund's  share of  Special  Investment  Portfolio's  allocated
    expenses for the period from the Fund's start of business,  August 22, 1994,
    to December 31, 1994.


<PAGE>
THE FUND'S INVESTMENT OBJECTIVE
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EV MARATHON SPECIAL EQUITIES FUND'S INVESTMENT OBJECTIVE IS TO PROVIDE GROWTH OF
CAPITAL.  The Fund currently seeks to meet its investment objective by investing
its assets in the Special Investment Portfolio, a separate registered investment
company that invests primarily in quality growth securities.  The Fund's and the
Portfolio's  investment  objectives are  nonfundamental  and may be changed when
authorized  by  a  vote  of  the  Trustees  of  the  Trust  or  the   Portfolio,
respectively,  without obtaining the approval of the Fund's  shareholders or the
investors in the  Portfolio,  as the case may be. The Trustees of the Trust have
no present  intention  to change the Fund's  objective  and intend to submit any
proposed material change in the investment  objective to shareholders in advance
for their approval.

HOW THE FUND AND THE PORTFOLIO INVEST THEIR
ASSETS; INVESTMENT RISKS
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THE  FUND  SEEKS  TO  ACHIEVE  ITS  INVESTMENT  OBJECTIVE  BY  INVESTING  IN THE
PORTFOLIO. Although there is no formula as to the percentage of assets that will
be  invested  in any one type of  security,  the policy of the  Portfolio  is to
invest  principally  (i.e.,  at least  65% of its  total  assets  during  normal
investment  conditions)  in  equity  securities,  including  common  stocks  and
securities  convertible into common stocks, of publicly held companies combining
characteristics  of both growth and quality sought by the Portfolio.  Any income
received will be incidental to the Portfolio's  objective of capital growth. The
criteria for investments in convertible  debt are the same as those used for the
common stock of the issuer.  The Portfolio  does not currently  intend to invest
more than 5% of its net assets in convertible  debt. The Portfolio may invest in
companies that have market  capitalizations of $250 million or less.  Investment
in the securities of such companies may be  characterized  as involving  greater
relative risk due to their smaller  size.  From time to time,  the Portfolio may
also  invest  in  bonds,  notes  and  certificates  of  indebtedness  if in  the
Investment   Adviser's   judgment  such  investments  are  consistent  with  the
Portfolio's  objective;  however,  the Portfolio  does not  currently  intend to
invest more than 5% of its net assets in each of such  investments and currently
intends to limit its investments in non-convertible debt to non-convertible debt
rated investment grade (i.e.,  rated Baa or higher by Moody's Investors Service,
Inc.  or BBB or higher by  Standard  & Poor's  Ratings  Group)  or, if  unrated,
determined to be of comparable  quality by the Portfolio's  Investment  Adviser.
Realization  of the  Portfolio's  objective will depend to a large extent on the
accuracy of earnings projections, which are not subject to exact prediction. If,
in the  opinion  of BMR,  market  conditions  are such that a more  conservative
approach to investments is deemed desirable,  then the Portfolio may temporarily
make substantial investments in investment grade fixed-income obligations of all
types and U.S. Government obligations,  or in bonds, notes or other certificates
of indebtedness.

In the view of the Investment  Adviser,  a growth security is an equity security
of a company  which has shown  relative  gains in earning power over a period of
years substantially above that achieved by the economy as a whole and which, the
Investment  Adviser  expects,  will  continue  to  show  such  gains.  It is the
intention of the Portfolio that its portfolio will be concentrated in securities
of companies which, in the Investment Adviser's judgment,  seem likely to double
their  earning power within a five-year  period.  To achieve this  objective,  a
company would require  minimum average annual compound rates of growth over such
period of at least 15%.  There is, of course,  no assurance  that the Investment
Adviser will be successful in selecting securities of companies which meet these
standards. In recommending portfolio investments on behalf of the Portfolio, the
Investment Adviser will consider that the quality of a security depends upon the
ability,  motivation,  depth  and  integrity  of the  issuer's  management,  the
importance of the enterprise in its industry and the relative  importance of the
industry within the broad economic framework,  the current financial strength of
the  enterprise  in  terms  of  ability  to  cushion  adversity  and to fund the
expansion of activities, and the reliability of final demand characteristics for
products  or  services.  The  Portfolio  would  generally  expect  to  hold  its
securities  until BMR's judgment of the issuing  company's  prospects is altered
and/or  the  price  of  the  company's   securities   appears  to  over-discount
prospective  earnings  progress  as  compared  with other  issues  with  similar
characteristics.

    The  Portfolio  may  invest  in  securities   issued  by  foreign  companies
(including American Depository  Receipts and Global Depository  Receipts).  Such
investments may be subject to various risks such as fluctuations in currency and
exchange rates, foreign taxes, social,  political and economic conditions in the
countries in which such companies operate, and changes in governmental, economic
or monetary policies both here and abroad.  There may be less publicly available
information  about a foreign company than about a comparable  domestic  company.
Because the securities markets in many foreign countries are not as developed as
those in the United States,  the  securities of many foreign  companies are less
liquid and their prices are more volatile than securities of comparable domestic
companies.  In order to hedge against  possible  variations in foreign  exchange
rates pending the settlement of foreign securities  transactions,  the Portfolio
may buy or sell foreign currencies.

    An investment in the Fund entails the risk that the principal  value of Fund
shares may not increase or may decline.  The  Portfolio's  investments in equity
securities are subject to the risk of adverse developments  affecting particular
companies or industries and the stock market generally. Investments in bonds are
subject  to the risk that the  issuer  may  default  on its  obligations  to pay
principal and interest.  The value of bonds tends to increase  during periods of
falling interest rates and to decline during periods of rising interest rates.
    

    The Fund and the  Portfolio  have  adopted  certain  fundamental  investment
restrictions  which are  enumerated  in detail in the  Statement  of  Additional
Information and which may not be changed unless authorized by a shareholder vote
and an investor vote, respectively.  Except for such enumerated restrictions and
as otherwise indicated in this Prospectus, the investment objective and policies
of the Fund and the Portfolio are not  fundamental  policies and accordingly may
be changed by the Trustees of the Trust and the Portfolio  without obtaining the
approval of the Fund's  shareholders  or the investors in the Portfolio,  as the
case may be. If any changes were made in the Fund's  investment  objective,  the
Fund might have an investment  objective  different from the objective  which an
investor considered appropriate at the time the investor became a shareholder of
the Fund.

- --------------------------------------------------------------------------------
  THE FUND IS NOT INTENDED TO BE A COMPLETE INVESTMENT PROGRAM,  AND PROSPECTIVE
  INVESTORS SHOULD TAKE INTO ACCOUNT THEIR OBJECTIVES AND OTHER INVESTMENTS WHEN
  CONSIDERING  THE PURCHASE OF FUND SHARES.  THE FUND CANNOT  ELIMINATE  RISK OR
  ASSURE ACHIEVEMENT OF ITS OBJECTIVE.
- --------------------------------------------------------------------------------



ORGANIZATION OF THE FUND AND THE PORTFOLIO
- --------------------------------------------------------------------------------

THE FUND IS A DIVERSIFIED  SERIES OF EATON VANCE  SPECIAL  INVESTMENT  TRUST,  A
BUSINESS TRUST ESTABLISHED UNDER  MASSACHUSETTS LAW PURSUANT TO A DECLARATION OF
TRUST DATED MARCH 27, 1989, AS AMENDED,  AS THE SUCCESSOR TO A CORPORATION WHICH
COMMENCED  OFFERING  ITS  SHARES TO THE  PUBLIC IN APRIL,  1968.  THE TRUST IS A
MUTUAL FUND -- AN OPEN-END MANAGEMENT  INVESTMENT  COMPANY.  The Trustees of the
Trust are responsible for the overall management and supervision of its affairs.
The Trust may issue an unlimited number of shares of beneficial interest (no par
value per share) in one or more series and because the Trust can offer  separate
series  (such  as the  Fund)  it is  known as a  "series  company."  Each  share
represents an equal  proportionate  beneficial interest in the Fund. When issued
and  outstanding,  the shares are fully paid and  nonassessable by the Trust and
redeemable  as described  under "How to Redeem Fund  Shares".  Shareholders  are
entitled  to one vote for each full share held.  Fractional  shares may be voted
proportionately.  Shares have no preemptive or conversion  rights and are freely
transferable.  In the event of the  liquidation  of the Fund,  shareholders  are
entitled  to  share  pro  rata in the  net  assets  of the  Fund  available  for
distribution to shareholders.

    THE  PORTFOLIO  IS  ORGANIZED  AS A TRUST UNDER THE LAWS OF THE STATE OF NEW
YORK AND INTENDS TO BE TREATED AS A PARTNERSHIP  FOR FEDERAL TAX  PURPOSES.  The
Portfolio,  as well as the Trust,  intends to comply with all applicable Federal
and state  securities  laws. The Portfolio's  Declaration of Trust provides that
the Fund and other entities  permitted to invest in the Portfolio  (e.g.,  other
U.S. and foreign  investment  companies,  and common and commingled trust funds)
will each be liable for all obligations of the Portfolio.  However,  the risk of
the Fund  incurring  financial  loss on account of such  liability is limited to
circumstances in which both inadequate insurance exists and the Portfolio itself
is  unable  to meet its  obligations.  Accordingly,  the  Trustees  of the Trust
believe that neither the Fund nor its shareholders will be adversely affected by
reason of the Fund investing in the Portfolio.

   
SPECIAL INFORMATION ON THE FUND/PORTFOLIO  INVESTMENT STRUCTURE.  An investor in
the Fund  should be aware that the Fund,  unlike  mutual  funds  which  directly
acquire and manage  their own  portfolios  of  securities,  seeks to achieve its
investment  objective  by investing  its assets in an interest in the  Portfolio
(although the Fund may temporarily hold a de minimus amount of cash), which is a
separate investment company with an identical investment  objective.  Therefore,
the Fund's  interest in the  securities  owned by the Portfolio is indirect.  In
addition to selling an interest to the Fund, the Portfolio may sell interests to
other affiliated and  non-affiliated  mutual funds or  institutional  investors.
Such investors will invest in the Portfolio on the same terms and conditions and
will pay a proportionate share of the Portfolio's  expenses.  However, the other
investors  investing in the  Portfolio  are not required to sell their shares at
the  same  public  offering  price  as the  Fund  due  to  variations  in  sales
commissions  and other  operating  expenses.  Therefore,  investors  in the Fund
should be aware that these  differences  may  result in  differences  in returns
experienced by investors in the various funds that invest in the Portfolio. Such
differences  in  returns  are also  present  in other  mutual  fund  structures,
including funds that have multiple classes of shares. For information  regarding
the investment objective, policies and restrictions,  see "The Fund's Investment
Objective" and "How the Fund and the Portfolio  Invest their Assets;  Investment
Risks".  Further information  regarding investment practices may be found in the
Statement of Additional Information.
     

    The Trustees of the Trust have  considered the advantages and  disadvantages
of investing the assets of the Fund in the Portfolio,  as well as the advantages
and  disadvantages  of the  two-tier  format.  The  Trustees  believe  that  the
structure  offers  opportunities  for  substantial  growth in the  assets of the
Portfolio, and affords the potential for economies of scale for the Fund.

    The Fund may withdraw  (completely redeem) all its assets from the Portfolio
at any time if the Board of Trustees of the Trust  determines  that it is in the
best  interest  of  the  Fund  to  do  so.  The  investment  objective  and  the
nonfundamental  investment policies of the Fund and the Portfolio may be changed
by the Trustees of the Trust and the Portfolio without obtaining the approval of
the shareholders of the Fund or the investors in the Portfolio,  as the case may
be. Any such change of the investment objective will be preceded by thirty days'
advance  written notice to the  shareholders of the Fund or the investors in the
Portfolio,  as the case may be. If a  shareholder  redeems  shares  because of a
change in the nonfundamental objective or policies of the Fund, those shares may
be subject to a contingent deferred sales charge, as described in "How to Redeem
Fund  Shares".  In the  event  the Fund  withdraws  all of its  assets  from the
Portfolio,  or the Board of Trustees of the Trust determines that the investment
objective of the Portfolio is no longer consistent with the investment objective
of the Fund, such Trustees would consider what action might be taken,  including
investing  the  assets  of the  Fund in  another  pooled  investment  entity  or
retaining an investment  adviser to manage the Fund's assets in accordance  with
its investment objective. The Fund's investment performance may be affected by a
withdrawal of all its assets from the Portfolio.

    Information regarding other pooled investment entities or funds which invest
in the Portfolio may be obtained by contacting  Eaton Vance  Distributors,  Inc.
(the "Principal  Underwriter" or "EVD"),  24 Federal Street,  Boston,  MA 02110,
(617) 482-8260.  Smaller investors in the Portfolio may be adversely affected by
the  actions of larger  investors  in the  Portfolio.  For  example,  if a large
investor  withdraws from the Portfolio,  the remaining  investors may experience
higher  pro  rata  operating   expenses,   thereby   producing   lower  returns.
Additionally,  the  Portfolio  may become less  diverse,  resulting in increased
portfolio  risk, and experience  decreasing  economies of scale.  However,  this
possibility exists as well for historically structured funds which have large or
institutional investors.

    Until  recently,  the  Administrator   sponsored  and  advised  historically
structured funds. Funds which invest all their assets in interests in a separate
investment  company are a relatively new development in the mutual fund industry
and,  therefore,  the  Fund  may  be  subject  to  additional  regulations  than
historically structured funds.

    The  Declaration of Trust of the Portfolio  provides that the Portfolio will
terminate  120 days  after  the  complete  withdrawal  of the Fund or any  other
investor in the Portfolio,  unless either the remaining investors,  by unanimous
vote at a meeting  of such  investors,  or a  majority  of the  Trustees  of the
Portfolio,  by  written  instrument  consented  to by all  investors,  agree  to
continue the  business of the  Portfolio.  This  provision  is  consistent  with
treatment of the Portfolio as a partnership for Federal income tax purposes. See
"Distributions  and  Taxes" for  further  information.  Whenever  the Fund as an
investor in the  Portfolio  is requested  to vote on matters  pertaining  to the
Portfolio (other than the termination of the Portfolio's business,  which may be
determined by the Trustees of the Portfolio without investor approval), the Fund
will hold a meeting  of Fund  shareholders  and will  vote its  interest  in the
Portfolio for or against such matters  proportionately  to the  instructions  to
vote for or against such matters received from Fund shareholders. The Fund shall
vote shares for which it receives no voting  instructions in the same proportion
as the shares for which it receives voting instructions.  Other investors in the
Portfolio may alone or collectively  acquire  sufficient voting interests in the
Portfolio to control matters  relating to the operation of the Portfolio,  which
may require the Fund to withdraw its  investment  in the Portfolio or take other
appropriate action. 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  Trustees  of the  Trust,  including  a  majority  of the  noninterested
Trustees,  have approved written procedures designed to identify and address any
potential  conflicts of interest  arising from the fact that the Trustees of the
Trust and the Trustees of the Portfolio are the same.  Such  procedures  require
each Board to take action to resolve any  conflict of interest  between the Fund
and the Portfolio,  and it is possible that the creation of separate  Boards may
be considered.  For further information  concerning the Trustees and officers of
the Trust and the Portfolio, see the Statement of Additional Information.

MANAGEMENT OF THE FUND AND THE PORTFOLIO
- --------------------------------------------------------------------------------

THE PORTFOLIO  ENGAGES BOSTON  MANAGEMENT AND RESEARCH  ("BMR"),  A WHOLLY-OWNED
SUBSIDIARY OF EATON VANCE MANAGEMENT ("EATON VANCE"), AS ITS INVESTMENT ADVISER.
EATON VANCE,  ITS  AFFILIATES AND ITS  PREDECESSOR  COMPANIES HAVE BEEN MANAGING
ASSETS OF  INDIVIDUALS  AND  INSTITUTIONS  SINCE  1924 AND  MANAGING  INVESTMENT
COMPANIES SINCE 1931.

    Acting  under  the  general  supervision  of the  Board of  Trustees  of the
Portfolio,  BMR manages  the  Portfolio's  investments  and  affairs.  Under its
investment  advisory  agreement  with the  Portfolio,  BMR  receives  a  monthly
advisory fee of 5/96 of 1% (equivalent to 0.625%  annually) of the average daily
net assets of the Portfolio.  For the period from the start of business,  August
1, 1994, to December 31, 1994, the Portfolio  paid BMR advisory fees  equivalent
to 0.625%  (annualized)  of the  Portfolio's  average  daily net assets for such
period.

   
    BMR  also  furnishes  for  the use of the  Portfolio  office  space  and all
necessary  office   facilities,   equipment  and  personnel  for  servicing  the
investments  of the  Portfolio.  BMR places the  portfolio  transactions  of the
Portfolio  with many  broker-dealer  firms and uses its best  efforts  to obtain
execution of such transactions at prices which are advantageous to the Portfolio
and at reasonably  competitive  commission rates. Subject to the foregoing,  BMR
may  consider  sales of  shares  of the Fund or of  other  investment  companies
sponsored by BMR or Eaton Vance as a factor in the  selection  of  broker-dealer
firms to execute portfolio transactions.
    

    Clifford H. Krauss has acted as the portfolio manager of the Portfolio since
it commenced  operations.  Mr.  Krauss has been a Vice  President of Eaton Vance
since 1987 and of BMR since 1992.

    BMR OR EATON VANCE ACTS AS INVESTMENT  ADVISER TO  INVESTMENT  COMPANIES AND
VARIOUS  INDIVIDUAL AND  INSTITUTIONAL  CLIENTS WITH ASSETS UNDER  MANAGEMENT OF
APPROXIMATELY  $15 BILLION.  Eaton Vance is a  wholly-owned  subsidiary of Eaton
Vance Corp., a publicly-held  holding  company.  Eaton Vance Corp.,  through its
subsidiaries  and  affiliates,  engages in investment  management  and marketing
activities,  fiduciary and banking services, oil and gas operations, real estate
investment,  consulting  and  management,  and  development  of precious  metals
properties.

    The Trust has retained  the services of Eaton Vance to act as  Administrator
of the Fund.  The Trust has not retained the services of an  investment  adviser
since  the  Trust  seeks to  achieve  the  investment  objective  of the Fund by
investing  the Fund's assets in the  Portfolio.  As  Administrator,  Eaton Vance
provides the Fund with general  office  facilities  and  supervises  the overall
administration of the Fund. For these services Eaton Vance currently receives no
compensation.  The  Trustees  of the  Trust may  determine,  in the  future,  to
compensate Eaton Vance for such services.

    The Portfolio and the Fund, as the case may be, will each be responsible for
all of its respective  costs and expenses not expressly  stated to be payable by
BMR  under  the  investment  advisory  agreement,   by  Eaton  Vance  under  the
administrative  services agreement,  or by EVD under the distribution agreement.
Such costs and expenses to be borne by the  Portfolio  and the Fund, as the case
may be,  include,  without  limitation:  custody  and  transfer  agency fees and
expenses,  including  those incurred for determining net asset value and keeping
accounting books and records;  expenses of pricing and valuation  services;  the
cost of share certficates;  membership dues in investment company organizations;
expenses  of  acquiring,   holding  and   disposing  of  securities   and  other
investments;  fees and expenses of registering under the securities laws and the
governmental  fees;  expenses of reporting to shareholders and investors;  proxy
statements and other expenses of shareholders' or investors' meetings; insurance
premiums;  printing and mailing  expenses;  interest,  taxes and corporate fees;
legal and  accounting  expenses;  compensation  and  expenses  of  Trustees  not
affiliated with BMR or Eaton Vance;  and investment  advisory fees, and, if any,
administrative  services  fees.  The  Portfolio and the Fund will also each bear
expenses  incurred in connection  with  litigation in which the Portfolio or the
Fund,  as the case may be, is a party and any legal  obligation to indemnify its
respective officers and Trustees with respect thereto.

DISTRIBUTION PLAN
- --------------------------------------------------------------------------------

THE FUND FINANCES  DISTRIBUTION  ACTIVITIES AND HAS ADOPTED A DISTRIBUTION  PLAN
(THE "PLAN")  PURSUANT TO RULE 12B-1 UNDER THE  INVESTMENT  COMPANY ACT OF 1940.
Rule 12b-1  permits a mutual  fund,  such as the Fund,  to finance  distribution
activities  and bear expenses  associated  with the  distribution  of its shares
provided  that any payments made by the Fund are made pursuant to a written plan
adopted in accordance  with the Rule. The Plan is subject to, and complies with,
the sales charge rule of the National  Association of Securities  Dealers,  Inc.
(the "NASD Rule").  The Plan is described further in the Statement of Additional
Information,  and the following is a description of the salient  features of the
Plan. The Plan provides that the Fund,  subject to the NASD Rule, will pay sales
commissions and distribution fees to the Principal Underwriter only after and as
a  result  of the  sale of  shares  of the  Fund.  On each  sale of Fund  shares
(excluding  reinvestment  of  distributions)  the Fund  will  pay the  Principal
Underwriter amounts representing (i) sales commissions equal to 5% of the amount
received by the Fund for each share sold and (ii)  distribution  fees calculated
by applying the rate of 1% over the prime rate then  reported in The Wall Street
Journal  to the  outstanding  balance  of  Uncovered  Distribution  Charges  (as
described  below)  of  the  Principal  Underwriter.  The  Principal  Underwriter
currently expects to pay sales commissions (except on exchange  transactions and
reinvestments) to a financial  services firm (an "Authorized  Firm") at the time
of sale equal to 4% of the purchase  price of the shares sold by such Firm.  The
Principal  Underwriter will use its own funds (which may be borrowed from banks)
to pay such  commissions.  Because  the  payment  of the sales  commissions  and
distribution  fees to the  Principal  Underwriter  is  subject  to the NASD Rule
described  below,  it will take the  Principal  Underwriter a number of years to
recoup the sales  commissions  paid by it to Authorized  Firms from the payments
received by it from the Fund pursuant to the Plan.

THE  NASD  RULE  REQUIRES  THE  FUND TO  LIMIT  ITS  ANNUAL  PAYMENTS  OF  SALES
COMMISSIONS AND DISTRIBUTION FEES TO THE PRINCIPAL  UNDERWRITER TO AN AMOUNT NOT
EXCEEDING  .75% OF THE FUND'S  AVERAGE  DAILY NET ASSETS FOR EACH  FISCAL  YEAR.
Under its Plan, the Fund accrues daily an amount at the rate of 1/365 of .75% of
the Fund's net assets,  and pays such accrued  amounts  monthly to the Principal
Underwriter.  The Plan requires such accruals to be  automatically  discontinued
during  any  period in which  there are no  outstanding  Uncovered  Distribution
Charges under the Plan. Uncovered Distribution Charges are calculated daily and,
briefly, are equivalent to all unpaid sales commissions and distribution fees to
which the Principal  Underwriter  is entitled under the Plan less all contingent
deferred sales charges theretofore paid to the Principal Underwriter.  The Eaton
Vance organization may be considered to have realized a profit under the Plan if
at any point in time the  aggregate  amounts  of all  payments  received  by the
Principal  Underwriter  from  the  Fund  pursuant  to the  Plan,  including  any
contingent deferred sales charges,  have exceeded the total expenses theretofore
incurred by such organization in distributing shares of the Fund. Total expenses
for this purpose will include an allocable portion of the overhead costs of such
organization and its branch offices.

    The amount payable by the Fund to the Principal  Underwriter pursuant to the
Plan with  respect to each day will be accrued on such day as a liability of the
Fund and will accordingly reduce the Fund's net assets upon such accrual, all in
accordance with generally accepted accounting principles.  The amount payable on
each day is limited  to 1/365 of .75% of the Fund's net assets on such day.  The
level of the Fund's net assets  changes  each day and depends upon the amount of
sales  and  redemptions  of  Fund  shares,  the  changes  in  the  value  of the
investments  held by the  Portfolio,  the expenses of the Fund and the Portfolio
accrued and allocated to the Fund on such day,  income on portfolio  investments
of the  Portfolio  accrued  and  allocated  to the  Fund  on such  day,  and any
dividends and  distributions  declared on Fund shares.  The Fund does not accrue
possible future payments as a liability of the Fund or reduce the Fund's current
net assets in respect of unknown amounts which may become payable under the Plan
in the future  because  the  standards  for  accrual of a  liability  under such
accounting principles have not been satisfied.

    The Plan provides that the Fund will receive all  contingent  deferred sales
charges and will make no payments to the Principal Underwriter in respect of any
day on which  there are no  outstanding  Uncovered  Distribution  Charges of the
Principal  Underwriter.  Contingent  deferred sales charges and accrued  amounts
will be paid by the  Fund to the  Principal  Underwriter  whenever  there  exist
Uncovered Distribution Charges under the Plan.

    The  provisions  of the Plan relating to payments of sales  commissions  and
distribution  fees  to  the  Principal  Underwriter  are  also  included  in the
Distribution Agreement between the Trust on behalf of the Fund and the Principal
Underwriter.  The Plan continues in effect through and including April 28, 1995,
and  shall  continue  in  effect  indefinitely  thereafter  for so  long as such
continuance  is approved at least annually by the vote of both a majority of (i)
the  Trustees of the Trust who are not  interested  persons of the Trust and who
have no direct or indirect  financial  interest in the  operation of the Plan or
any agreements  related to the Plan (the "Rule 12b-1  Trustees") and (ii) all of
the Trustees then in office,  and the Distribution  Agreement contains a similar
provision.  The Plan and Distribution Agreement may be terminated at any time by
vote of a majority of the Rule 12b-1  Trustees or by a vote of a majority of the
outstanding voting securities of the Fund.

    Periods with a high level of sales of Fund shares accompanied by a low level
of early  redemptions  of Fund shares  resulting in the imposition of contingent
deferred  sales  charges  will tend to increase the time during which there will
exist Uncovered Distribution Charges of the Principal  Underwriter.  Conversely,
periods with a low level of sales of Fund shares  accompanied by a high level of
early  redemptions  of Fund shares  resulting in the  imposition  of  contingent
deferred  sales  charges  will tend to reduce the time  during  which there will
exist Uncovered Distribution Charges of the Principal Underwriter.

    Because of the NASD Rule  limitation on the amount of sales  commissions and
distribution  fees paid to the Principal  Underwriter  during any fiscal year, a
high  level of sales of Fund  shares  during  the  initial  years of the  Fund's
operations would cause a large portion of the sales commission attributable to a
sale of  Fund  shares  to be  accrued  and  paid  by the  Fund to the  Principal
Underwriter  in fiscal  years  subsequent  to the year in which such shares were
sold.  This  spreading  of sales  commissions  payments  under  the Plan over an
extended  period  would  result  in the  incurrence  and  payment  of  increased
distribution  fees under the Plan.  For the period  from the start of  business,
August 22, 1994, to December 31, 1994, the Fund paid sales commissions under the
Plan equivalent to .75%  (annualized) of the Fund's average daily net assets for
such period. As at December 31, 1994, the Uncovered  Distribution Charges of the
Principal  Underwriter  calculated  under  the Plan  amounted  to  approximately
$21,676 (equivalent to 3.5% of the Fund's net assets on such day).

THE PLAN  ALSO  AUTHORIZES  THE FUND TO MAKE  PAYMENTS  OF  SERVICE  FEES TO THE
PRINCIPAL  UNDERWRITER,  AUTHORIZED  FIRMS  AND OTHER  PERSONS  IN  AMOUNTS  NOT
EXCEEDING  .25% OF THE FUND'S AVERAGE DAILY NET ASSETS FOR EACH FISCAL YEAR. The
Trustees of the Trust have initially  implemented  the Plan by  authorizing  the
Fund to make  quarterly  service fee payments to the Principal  Underwriter  and
Authorized  Firms in amounts not  expected to exceed .25% of the Fund's  average
daily net assets for any fiscal  year based on the value of Fund  shares sold by
such persons and remaining  outstanding for at least twelve months. As permitted
by the NASD Rule,  all such payments are made for personal  services  and/or the
maintenance of shareholder accounts. Service fees are separate and distinct from
the sales commissions and distribution fees payable by the Fund to the Principal
Underwriter,  and as such are not subject to automatic discontinuance when there
are no outstanding Uncovered  Distribution Charges of the Principal Underwriter.
The Fund  expects to begin  accruing  for its  service fee  payments  during the
quarter ending September 30, 1995.

    As currently  implemented by the Trustees,  the Plan authorizes  payments of
sales commissions and distribution fees to the Principal Underwriter and service
fees to the Principal  Underwriter and Authorized Firms which may be equivalent,
on an aggregate  basis  during any fiscal year of the Fund,  to 1% of the Fund's
average daily net assets for such year. The Fund believes that the combined rate
of all  these  payments  may be  higher  than the rate of  payments  made  under
distribution plans adopted by other investment companies pursuant to Rule 12b-1.
It is anticipated that the Eaton Vance organization will profit by reason of the
operation of the Plan through increases in the Fund's assets (thereby increasing
the advisory fees payable to BMR by the Portfolio)  resulting from sales of Fund
shares and through amounts paid under the Plan to the Principal  Underwriter and
contingent deferred sales charges paid to the Principal Underwriter.

    The  Principal  Underwriter  may,  from  time to time,  at its own  expense,
provide  additional  incentives  to  Authorized  Firms which  employ  registered
representatives  who sell a minimum  dollar  amount of the Fund's  shares and/or
shares  of  other  funds  distributed  by the  Principal  Underwriter.  In  some
instances,  such additional incentives may be offered only to certain Authorized
Firms whose  representatives are expected to sell significant amounts of shares.
In  addition,  the  Principal  Underwriter  may from  time to time  increase  or
decrease the sales commissions payable to Authorized Firms.

    The Fund may, in its absolute discretion,  suspend, discontinue or limit the
offering  of its shares at any time.  In  determining  whether  any such  action
should be taken, the Fund's management intends to consider all relevant factors,
including  without  limitation the size of the Fund, the investment  climate and
market  conditions,  the volume of sales and redemptions of Fund shares, and the
amount of Uncovered Distribution Charges of the Principal Underwriter.  The Plan
may  continue in effect and payments  may be made under the Plan  following  any
such  suspension,  discontinuance  or limitation of the offering of Fund shares;
however,  the Fund is not  contractually  obligated to continue the Plan for any
particular period of time.  Suspension of the offering of Fund shares would not,
of course, affect a shareholder's ability to redeem shares.

VALUING FUND SHARES
- --------------------------------------------------------------------------------

THE FUND  VALUES ITS SHARES  ONCE ON EACH DAY THE NEW YORK STOCK  EXCHANGE  (THE
"EXCHANGE")  IS OPEN FOR  TRADING,  as of the close of  regular  trading  on the
Exchange  (normally  4:00 p.m.  New York  time).  The Fund's net asset value per
share is determined by its custodian,  Investors  Bank & Trust Company  ("IBT"),
(as agent for the Fund) in the manner  authorized  by the Trustees of the Trust.
Net asset value is computed by dividing  the value of the Fund's  total  assets,
less its  liabilities,  by the number of shares  outstanding.  Because  the Fund
invests its assets in an interest in the  Portfolio,  the Fund's net asset value
will  reflect  the  value of its  interest  in the  Portfolio  (which,  in turn,
reflects the underlying value of the Portfolio's assets and liabilities).

    Authorized  Firms must  communicate  an  investor's  order to the  Principal
Underwriter  prior to the close of the Principal  Underwriter's  business day to
receive that day's net asset value per Fund share.  It is the Authorized  Firms'
responsibility to transmit orders promptly to the Principal  Underwriter,  which
is a wholly-owned subsidiary of Eaton Vance.

   
    The  Portfolio's  net  asset  value is also  determined  as of the  close of
regular  trading  on the  Exchange  by IBT  (as  custodian  and  agent  for  the
Portfolio) in the manner  authorized by the Trustees of the  Portfolio.  The net
asset value is computed by subtracting the liabilities of the Portfolio from the
value of its total assets.  Securities listed on securities  exchanges or in the
NASDAQ  National  Market  are  valued  at  closing  sale  prices.   For  further
information   regarding   the   valuation  of  the   Portfolio's   assets,   see
"Determination  of Net Asset Value" in the Statement of Additional  Information.
Eaton Vance Corp. owns 77.3% of the outstanding stock of IBT, the Fund's and the
Portfolio's custodian. 
    

- --------------------------------------------------------------------------------
  SHAREHOLDERS  MAY DETERMINE THE VALUE OF THEIR  INVESTMENT BY MULTIPLYING  THE
  NUMBER OF FUND SHARES OWNED BY THE CURRENT NET ASSET VALUE PER SHARE.
- --------------------------------------------------------------------------------

HOW TO BUY FUND SHARES
- --------------------------------------------------------------------------------

SHARES OF THE FUND MAY BE PURCHASED  FOR CASH OR MAY BE ACQUIRED IN EXCHANGE FOR
SECURITIES.  Investors may purchase shares of the Fund through  Authorized Firms
at the net asset value per share of the Fund next  determined  after an order is
effective.  The Fund may  suspend  the  offering  of  shares at any time and may
refuse an order for the purchase of shares.

    An initial  investment in the Fund must be at least $1,000.  Once an account
has been  established  the investor may send  investments  of $50 or more at any
time directly to the Fund's  Transfer Agent (the  "Transfer  Agent") as follows:
The Shareholder  Services Group, Inc., BOS725,  P.O. Box 1559, Boston, MA 02104.
The $1,000 minimum  initial  investment is waived for Bank  Automated  Investing
accounts, which may be established with an investment of $50 or more. See "Eaton
Vance Shareholder Services".

    In connection with employee benefit or other continuous group purchase plans
under which the average initial  purchase by a participant of the plan is $1,000
or more, the Fund may accept initial investments of less than $1,000 on the part
of an individual participant. In the event a shareholder who is a participant of
such a plan  terminates  participation  in the plan,  his or her shares  will be
transferred  to a regular  individual  account.  However,  such  account will be
subject to the right of redemption by the Fund as described under "How to Redeem
Fund Shares."

ACQUIRING  FUND SHARES IN EXCHANGE FOR  SECURITIES.  IBT, as escrow agent,  will
receive securities acceptable to Eaton Vance, as Administrator,  in exchange for
Fund shares at their net asset value as determined  above.  The minimum value of
securities (or  securities and cash) accepted for deposit is $5,000.  Securities
accepted  will be sold by IBT as agent for the account of their owner on the day
of their receipt by IBT or as soon  thereafter  as possible.  The number of Fund
shares to be issued in exchange for  securities  will be the aggregate  proceeds
from the sale of such securities,  divided by the applicable net asset value per
Fund  share  on the day  such  proceeds  are  received.  Eaton  Vance  will  use
reasonable  efforts to obtain the then current market price for such  securities
but does not guarantee  the best  available  price.  Eaton Vance will absorb any
transaction costs, such as commissions, on the sale of the securities.

    Securities  determined to be acceptable should be transferred via book entry
or  physically  delivered,  in proper form for  transfer,  through an Authorized
Firm,  together with a completed and signed  Letter of  Transmittal  in approved
form (available from Authorized Firms), as follows:

    IN THE CASE OF BOOK ENTRY:

        Deliver through Depository Trust Co.
        Broker #2212
        Investors Bank & Trust Company
        For A/C EV Marathon Special Equities Fund

    IN THE CASE OF PHYSICAL DELIVERY:

        Investors Bank & Trust Company
        Attention: EV Marathon Special Equities Fund
        Physical Securities Processing Settlement Area
        89 South Street
        Boston, MA 02111

    Investors who are  contemplating an exchange of securities for shares of the
Fund, or their representatives,  are advised to contact Eaton Vance to determine
whether the securities are acceptable  before forwarding such securities to IBT.
Eaton Vance reserves the right to reject any securities.  Exchanging  securities
for Fund shares may create a taxable gain or loss.  Each investor should consult
his or her tax adviser with respect to the particular  Federal,  state and local
tax consequences of exchanging securities for Fund shares.

- --------------------------------------------------------------------------------
  IF YOU DON'T HAVE AN AUTHORIZED FIRM, EATON VANCE CAN RECOMMEND ONE.
- --------------------------------------------------------------------------------

HOW TO REDEEM FUND SHARES
- --------------------------------------------------------------------------------

A SHAREHOLDER MAY REDEEM FUND SHARES BY DELIVERING TO THE  SHAREHOLDER  SERVICES
GROUP, INC.,  BOS725,  P.O. BOX 1559, BOSTON,  MASSACHUSETTS  02104,  during its
business hours a written  request for  redemption in good order,  plus any share
certificates  with executed stock powers.  The redemption price will be based on
the net asset value per Fund share next computed after such delivery. Good order
means that all  relevant  documents  must be  endorsed  by the record  owner (s)
exactly as the shares are registered and the signature(s)  must be guaranteed by
a member of either the Securities  Transfer  Association's  STAMP program or the
New York Stock Exchange's Medallion Signature Program, or certain banks, savings
and loan institutions,  credit unions, securities dealers, securities exchanges,
clearing  agencies  and  registered  securities  associations  as  required by a
regulation of the  Securities and Exchange  Commission  (the  "Commission")  and
acceptable to The Shareholder  Services Group, Inc. In addition,  in some cases,
good order may require the  furnishing  of  additional  documents  such as where
shares are registered in the name of a corporation, partnership or fiduciary.

    Within seven days after receipt of a redemption request in good order by The
Shareholder Services Group, Inc., the Fund will make payment in cash for the net
asset value of the shares as of the date determined above, reduced by the amount
of any applicable  contingent  deferred sales charges  (described below) and any
Federal income tax required to be withheld.  Although the Fund normally  expects
to make payment in cash for redeemed  shares,  the Trust,  subject to compliance
with applicable regulations,  has reserved the right to pay the redemption price
of shares of the Fund, either totally or partially, by a distribution in kind of
readily  marketable  securities  withdrawn by the Fund from the  Portfolio.  The
securities so distributed would be valued pursuant to the Portfolio's  valuation
procedures.  If a shareholder  received a distribution  in kind, the shareholder
could incur brokerage or other charges in converting the securities to cash.

    To sell  shares at their net  asset  value  through  an  Authorized  Firm (a
repurchase),  a  shareholder  can place a repurchase  order with the  Authorized
Firm,  which may  charge a fee.  The value of such  shares is based upon the net
asset value calculated after EVD, as the Fund's agent, receives the order. It is
the Authorized Firm's  responsibility to transmit promptly  repurchase orders to
EVD.  Throughout this  Prospectus,  the word  "redemption" is generally meant to
include a repurchase.

    If  shares  were  recently   purchased,   the  proceeds  of  redemption  (or
repurchase) will not be sent until the check (including a certified or cashier's
check)  received  for the  shares  purchased  has  cleared.  Payment  for shares
tendered for redemption may be delayed up to 15 days from the purchase date when
the purchase check has not yet cleared. Redemptions or repurchases may result in
a taxable gain or loss.

    Due to the high cost of maintaining  small  accounts,  the Fund reserves the
right to redeem  accounts  with  balances of less than  $1,000.  Prior to such a
redemption,  shareholders  will be  given  60 days'  written  notice  to make an
additional  purchase.  Thus, an investor making an initial  investment of $1,000
would  not be able to  redeem  shares  without  being  subject  to this  policy.
However,  no such  redemption  would be required by the Fund if the cause of the
low account  balance was a reduction in the net asset value of Fund  shares.  No
contingent   deferred  sales  charge  will  be  imposed  with  respect  to  such
involuntary redemptions.

CONTINGENT DEFERRED SALES CHARGE.  Shares redeemed within the first six years of
their   purchase   (except  shares   acquired   through  the   reinvestment   of
distributions)  generally will be subject to a contingent deferred sales charge.
This contingent deferred sales charge is imposed on any redemption the amount of
which exceeds the aggregate value at the time of redemption of (a) all shares in
the  account  purchased  more than six years  prior to the  redemption,  (b) all
shares in the account acquired through reinvestment of distributions and (c) the
increase,  if any,  of value of all other  shares in the account  (namely  those
purchased within the six years preceding the redemption) over the purchase price
of such shares.  Redemptions are processed in a manner to maximize the amount of
redemption  proceeds  which will not be subject to a contingent  deferred  sales
charge.  That is, each  redemption  will be assumed to have been made first from
the exempt  amounts  referred to in clauses (a),  (b) and (c) above,  and second
through  liquidation of those shares in the account referred to in clause (c) on
a  first-in-first-out  basis.  Any  contingent  deferred  sales  charge which is
required to be imposed on share  redemptions will be made in accordance with the
following schedule:

                  YEAR OF                  CONTINGENT
                REDEMPTION               DEFERRED SALES
              AFTER PURCHASE                 CHARGE
              --------------             --------------
                   First ....................   5%
                   Second ...................   5%
                   Third ....................   4%
                   Fourth ...................   3%
                   Fifth ....................   2%
                   Sixth ....................   1%
                   Seventh and following ....   0%


    In calculating  the contingent  deferred sales charge upon the redemption of
Fund shares acquired in an exchange for shares of a fund currently  listed under
"The Eaton Vance  Exchange  Privilege,"  the  contingent  deferred  sales charge
schedule  applicable  to the shares at the time of  purchase  will apply and the
purchase of Fund shares  acquired in the exchange is deemed to have  occurred at
the time of the  original  purchase  of the  exchanged  shares.  The  contingent
deferred  sales  charge  will be waived for shares  redeemed  (1)  pursuant to a
Withdrawal  Plan (see  "Eaton  Vance  Shareholder  Services"),  (2) as part of a
required distribution from a tax-sheltered retirement plan, or (3) following the
death of all  beneficial  owners of such  shares,  provided  the  redemption  is
requested  within one year of death (a death  certificate  and other  applicable
documents may be required).


    No  contingent  deferred  sales  charge will be imposed on Fund shares which
have  been  sold to Eaton  Vance,  or its  affiliates,  or to  their  respective
employees or clients.  The contingent  deferred sales charge will be paid to the
Principal  Underwriter  or the Fund.  When paid to the Principal  Underwriter it
will reduce the amount of Uncovered  Distribution  Charges  calculated under the
Fund's Distribution Plan. See "Distribution Plan".

- --------------------------------------------------------------------------------
  THE FOLLOWING EXAMPLE  ILLUSTRATES THE OPERATION OF THE CONTINGENT  DEFERRED
  SALES CHARGE. ASSUME THAT AN INVESTOR PURCHASES $10,000 OF THE FUND'S SHARES
  AND  THAT 16  MONTHS  LATER  THE  VALUE OF THE  ACCOUNT  HAS  GROWN  THROUGH
  INVESTMENT  PERFORMANCE AND REINVESTMENT OF  DISTRIBUTIONS  TO $12,000.  THE
  INVESTOR  THEN MAY  REDEEM  UP TO  $2,000  OF  SHARES  WITHOUT  INCURRING  A
  CONTINGENT  DEFERRED SALES CHARGE.  IF THE INVESTOR  SHOULD REDEEM $3,000 OF
  SHARES,  A CHARGE  WOULD BE  IMPOSED ON $1,000 OF THE  REDEMPTION.  THE RATE
  WOULD BE 5% BECAUSE  THE  REDEMPTION  WAS MADE IN THE SECOND  YEAR AFTER THE
  PURCHASE WAS MADE AND THE CHARGE WOULD BE $50. y
- --------------------------------------------------------------------------------


REPORTS TO SHAREHOLDERS
- --------------------------------------------------------------------------------

THE  FUND  WILL  ISSUE  TO  ITS  SHAREHOLDERS  SEMI-ANNUAL  AND  ANNUAL  REPORTS
CONTAINING FINANCIAL STATEMENTS. Financial statements included in annual reports
are audited by the Fund's independent accountants. Shortly after the end of each
calendar year, the Fund will furnish all shareholders with information necessary
for preparing Federal and state tax returns.

THE LIFETIME INVESTING ACCOUNT/DISTRIBUTION OPTIONS
- --------------------------------------------------------------------------------

AFTER AN INVESTOR MAKES AN INITIAL PURCHASE OF FUND SHARES,  THE FUND'S TRANSFER
AGENT, THE SHAREHOLDER  SERVICES GROUP,  INC., WILL SET UP A LIFETIME  INVESTING
ACCOUNT  FOR THE  INVESTOR  ON THE FUND'S  RECORDS.  This  account is a complete
record of all transactions  between the investor and the Fund which at all times
shows the balance of shares  owned.  The Fund will not issue share  certificates
except upon request.

    Each  time  a  transaction  takes  place  in a  shareholder's  account,  the
shareholder will receive a statement showing complete details of the transaction
and the  current  balance  in the  account.  (Under  certain  investment  plans,
statements  may be sent only  quarterly.)  THE LIFETIME  INVESTING  ACCOUNT ALSO
PERMITS A  SHAREHOLDER  TO MAKE  ADDITIONAL  INVESTMENTS  IN SHARES BY SENDING A
CHECK FOR $50 OR MORE to The Shareholder Services Group, Inc.

    Any questions  concerning a shareholder's  account or services available may
be directed by telephone to EATON VANCE  SHAREHOLDER  SERVICES at  800-225-6265,
extension 2, or in writing to The Shareholder Services Group, Inc., BOS725, P.O.
Box 1559, Boston, MA 02104 (please provide the name of the shareholder, the Fund
and the account number).

    THE  FOLLOWING  DISTRIBUTION  OPTIONS  WILL  BE  AVAILABLE  TO ALL  LIFETIME
INVESTING  ACCOUNTS and may be changed as often as desired by written  notice to
the Fund's dividend  disbursing  agent,  The Shareholder  Services Group,  Inc.,
BOS725,  P.O. Box 1559,  Boston,  MA 02104. The currently  effective option will
appear on each confirmation statement.

    Share Option -- Dividends and capital gains will be reinvested in additional
shares.

    Income Option -- Dividends  will be paid in cash,  and capital gains will be
reinvested in additional shares.

    Cash Option -- Dividends and capital gains will be paid in cash.

    The  Share  Option  will  be  assigned  if no  other  option  is  specified.
Distributions,  including those  reinvested,  will be reduced by any withholding
required under Federal income tax laws.

    If the Income  Option or Cash  Option  has been  selected,  dividend  and/or
capital gains distribution checks which are returned by the United States Postal
Service as not  deliverable or which remain uncashed for six months or more will
be  reinvested  in the account in shares at the then  current  net asset  value.
Furthermore,  the  distribution  option  on the  account  will be  automatically
changed  to the  Share  Option  until  such  time as the  shareholder  selects a
different option.

    DISTRIBUTION  INVESTMENT OPTION. In addition to the distribution options set
forth above, dividends and/or capital gains may be invested in additional shares
of another Eaton Vance fund. Before selecting this option, a shareholder  should
obtain a prospectus  of the other Eaton Vance fund and  consider its  objectives
and policies carefully.

    "STREET  NAME"  ACCOUNTS.  If shares of the Fund are held in a "street name"
account with an Authorized Firm, all recordkeeping,  transaction  processing and
payments of  distributions  relating to the beneficial  owner's  account will be
performed by the Authorized  Firm,  and not by the Fund and its Transfer  Agent.
Since the Fund will have no record of the  beneficial  owner's  transactions,  a
beneficial  owner should  contact the  Authorized  Firm to  purchase,  redeem or
exchange shares, to make changes in or give instructions concerning the account,
or to obtain information about the account.  The transfer of shares in a "street
name" account to an account with another  dealer or to an account  directly with
the Fund involves  special  procedures and will require the beneficial  owner to
obtain historical purchase  information about the shares in the account from the
Authorized Firm. Before  establishing a "street name" account with an investment
firm,  or  transferring  the  account to another  investment  firm,  an investor
wishing to reinvest  distributions  should determine whether the firm which will
hold the shares allows reinvestment of distributions in "street name" accounts.

- --------------------------------------------------------------------------------
  UNDER  A  LIFETIME   INVESTING  ACCOUNT  A  SHAREHOLDER  CAN  MAKE  ADDITIONAL
  INVESTMENTS IN SHARES BY SENDING A CHECK FOR $50 OR MORE.
- --------------------------------------------------------------------------------

THE EATON VANCE EXCHANGE PRIVILEGE
- --------------------------------------------------------------------------------

   
Shares of the Fund may be exchanged for shares of one or more other funds in the
Eaton Vance Marathon  Group of Funds (which  includes Eaton Vance Equity- Income
Trust and any EV Marathon fund, except Eaton Vance Prime Rate Reserves) or Eaton
Vance Money Market Fund, which are distributed  subject to a contingent deferred
sales charge,  on the basis of the net asset value per share of each fund at the
time of the exchange,  provided  that such offers are  available  only in states
where shares of the fund being acquired may be legally sold.
    

    Each exchange  must involve  shares which have a net asset value of at least
$1,000. The exchange  privilege may be changed or discontinued  without penalty.
Shareholders  will be given sixty (60) days' notice prior to any  termination or
material  amendment  of the  exchange  privilege.  The Fund does not  permit the
exchange privilege to be used for "Market Timing" and may terminate the exchange
privilege for any  shareholder  account engaged in Market Timing  activity.  Any
shareholder account for which more than two round-trip exchanges are made within
any  twelve  month  period  will be  deemed  to be  engaged  in  Market  Timing.
Furthermore,  a group of  unrelated  accounts  for which  exchanges  are entered
contemporaneously  by a financial  intermediary will be considered to be engaged
in Market Timing.

    The Shareholder  Services Group, Inc. makes exchanges at the next determined
net asset value after  receiving an exchange  request in good order (see "How to
Redeem  Fund  Shares").   Consult  The  Shareholder  Services  Group,  Inc.  for
additional  information  concerning  the exchange  privilege.  Applications  and
prospectuses of other funds are available from Authorized Firms or the Principal
Underwriter.  The prospectus  for each fund describes its investment  objectives
and policies,  and  shareholders  should obtain a prospectus  and consider these
objectives and policies carefully before requesting an exchange.

    No contingent deferred sales charge is imposed on exchanges. For purposes of
calculating  the contingent  deferred sales charge upon the redemption of shares
acquired  in  an  exchange,   the  contingent  deferred  sales  charge  schedule
applicable  to the shares at the time of purchase will apply and the purchase of
shares  acquired in one or more exchanges is deemed to have occurred at the time
of the original  purchase of the exchanged shares.  For the contingent  deferred
sales charge  schedule  applicable  to the Eaton Vance  Marathon  Group of Funds
(except EV Marathon  Strategic Income Fund and Class I shares of any EV Marathon
Limited Maturity Fund), see "How to Redeem Fund Shares". The contingent deferred
sales charge schedule  applicable to EV Marathon Strategic Income Fund and Class
I shares of any EV Marathon  Limited  Maturity Fund is 3%, 2.5%, 2% or 1% in the
event of a  redemption  occurring  in the first,  second,  third or fourth year,
respectively, after the original share purchase.

   
    Shares of the other  funds in the Eaton  Vance  Marathon  Group of Funds and
shares of Eaton Vance Money Market Fund may be exchanged  for Fund shares on the
basis of the net asset value per share of each fund at the time of the exchange,
but  subject to any  restrictions  or  qualifications  set forth in the  current
prospectus of any such fund. 
    

    Telephone  exchanges are accepted by The Shareholder  Services Group,  Inc.,
provided,  that  the  investor  has not  disclaimed  in  writing  the use of the
privilege.  To effect such exchanges,  call The Shareholder Services Group, Inc.
at 800-262-1122 or, within Massachusetts,  617-573-9403,  Monday through Friday,
9:00 a.m. to 4:00 p.m.  (Eastern  Standard  Time).  Shares acquired by telephone
exchange must be registered in the same name(s) and with the same address as the
shares being  exchanged.  Neither the Fund,  the Principal  Underwriter  nor The
Shareholder  Services Group,  Inc. will be responsible  for the  authenticity of
exchange instructions received by telephone, provided that reasonable procedures
to confirm  that  instructions  communicated  are  genuine  have been  followed.
Telephone  instructions  will be tape recorded.  In times of drastic economic or
market changes, a telephone exchange may be difficult to implement.  An exchange
may result in a taxable gain or loss.

EATON VANCE SHAREHOLDER SERVICES
- --------------------------------------------------------------------------------

THE FUND OFFERS THE FOLLOWING  SERVICES,  WHICH ARE VOLUNTARY,  INVOLVE NO EXTRA
CHARGE,  AND MAY BE CHANGED OR  DISCONTINUED  WITHOUT  PENALTY AT ANY TIME. Full
information on each of the services  described below and an  application,  where
required, are available from Authorized Firms or the Principal Underwriter.  The
cost  of  administering  such  services  for the  benefit  of  shareholders  who
participate in them is borne by the Fund as an expense to all shareholders.

INVEST-BY-MAIL  -- FOR  PERIODIC  SHARE  ACCUMULATION:  Once the $1,000  minimum
investment has been made, checks of $50 or more payable to the order of the Fund
may be mailed directly to The Shareholder Services Group, Inc., BOS725, P.O. Box
1559,  Boston,  MA  02104  at any  time  --  whether  or not  distributions  are
reinvested. The name of the shareholder,  the Fund and the account number should
accompany each investment.

WITHDRAWAL  PLAN: A shareholder may draw on  shareholdings  systematically  with
monthly or quarterly checks in an aggregate amount that does not exceed annually
12% of the account balance at the time the plan is established. Such amount will
not be subject to a contingent  deferred  sales charge.  See "How to Redeem Fund
Shares". A minimum deposit of $5,000 in shares is required.

BANK AUTOMATED INVESTING -- FOR REGULAR SHARE ACCUMULATION:  Cash investments of
$50 or more may be made automatically each month or quarter from a shareholder's
bank account. The $1,000 minimum initial investment and small account redemption
policy are waived for these accounts.

REINVESTMENT PRIVILEGE: A SHAREHOLDER WHO HAS REPURCHASED OR REDEEMED SHARES MAY
REINVEST,  WITH CREDIT FOR ANY  CONTINGENT  DEFERRED  SALES  CHARGES PAID ON THE
REPURCHASED  OR  REDEEMED  SHARES,  ANY  PORTION  OR ALL OF  THE  REPURCHASE  OR
REDEMPTION PROCEEDS (PLUS THAT AMOUNT NECESSARY TO ACQUIRE A FRACTIONAL SHARE TO
ROUND  OFF THE  PURCHASE  TO THE  NEAREST  FULL  SHARE)  IN  SHARES OF THE FUND,
provided that the  reinvestment is effected within 30 days after such repurchase
or  redemption.  Shares are sold to a reinvesting  shareholder  at the net asset
value next determined  following  timely receipt of a written  purchase order by
the Principal  Underwriter or by the Fund (or by the Fund's Transfer Agent).  To
the extent that any shares of the Fund are sold at a loss and the  proceeds  are
reinvested  in  shares of the Fund (or  other  shares  of the Fund are  acquired
within the period  beginning 30 days before and ending 30 days after the date of
the  redemption)  some or all of the loss generally will not be allowed as a tax
deduction.  Shareholders  should  consult their tax advisers  concerning the tax
consequences of reinvestments.

TAX-SHELTERED RETIREMENT PLANS: Shares of the Fund are available for purchase in
connection with the following tax-sheltered retirement plans:

    -- Pension  and  Profit   Sharing  Plans  for   self-employed   individuals,
       corporations and non-profit organizations;

    -- Individual  Retirement  Account  Plans for  individuals  and  their  non-
       employed spouses; and

    -- 403(b)   Retirement   Plans  for  employees  of  public  school  systems,
       hospitals,  colleges and other non-profit  organizations  meeting certain
       requirements  of the  Internal  Revenue  Code of 1986,  as  amended  (the
       "Code").

    Detailed information concerning these plans, including certain exceptions to
minimum investment requirements,  and copies of the plans are available from the
Principal   Underwriter.   This   information   should  be  read  carefully  and
consultation  with an attorney or tax adviser may be advisable.  The information
sets forth the  service  fee  charged for  retirement  plans and  describes  the
Federal  income  tax  consequences  of  establishing  a plan.  Under all  plans,
dividends  and  distributions  will be  automatically  reinvested  in additional
shares.

DISTRIBUTIONS AND TAXES
- --------------------------------------------------------------------------------

It is the present policy of the Fund to pay at least annually dividends from net
investment income allocated to the Fund by the Portfolio, less the Fund's direct
and allocated expenses and to distribute at least annually any net capital gains
realized  (the Fund's  realized  net capital  gains  consist of the net realized
capital gains from the sale of portfolio securities allocated to the Fund by the
Portfolio).

    Shareholders  may reinvest  dividends,  if any, in shares of the Fund at the
current net asset value per share as of the ex-dividend  date and may accumulate
capital gains  distributions,  if any, in additional  shares also at the current
net asset value per share as of the ex-dividend date.

    Distributions  by the Fund of  ordinary  income and net  short-term  capital
gains  allocated  to the Fund by the  Portfolio  will be  taxable  to the Fund's
shareholders  as ordinary  income,  whether  received in cash or  reinvested  in
additional  shares  of the Fund.  Shareholders  reinvesting  such  distributions
should treat the amount of the entire  distribution as the tax cost basis of the
additional shares acquired by reason of such reinvestment.  Distributions of net
long-term capital gains are taxable to shareholders as such, whether received in
cash or  reinvested  in  additional  shares of the Fund,  and  regardless of the
length of time shares have been owned by  shareholders.  If shares are purchased
shortly before the record date of a distribution,  the shareholder  will pay the
full price for the shares and then  receive  some portion of the price back as a
taxable  distribution.  Certain  distributions  which are  declared  in October,
November  or December  and paid the  following  January  will be  reportable  by
shareholders  as if  received  on  December  31 of the  year in  which  they are
declared.

    Shareholders will receive annually tax information notices and Forms 1099 to
assist in the  preparation  of their Federal and state tax returns for the prior
calendar year's distributions,  proceeds from the redemption or exchange of Fund
shares, and Federal income tax (if any) withheld by the Fund's Transfer Agent.

    In order to qualify as a regulated  investment  company under the Code,  the
Fund must satisfy  certain  requirements  relating to the sources of its income,
the  distribution  of its income,  and the  diversification  of its  assets.  In
satisfying  these  requirements,  the Fund  will  treat  itself  as  owning  its
proportionate  share of each of the  Portfolio's  assets and as  entitled to the
income of the Portfolio properly attributable to such share.

- --------------------------------------------------------------------------------
  AS A  REGULATED  INVESTMENT  COMPANY  UNDER THE CODE,  THE FUND DOES NOT PAY
  FEDERAL  INCOME  OR  EXCISE  TAXES  TO THE  EXTENT  THAT IT  DISTRIBUTES  TO
  SHAREHOLDERS  ITS NET  INVESTMENT  INCOME AND NET REALIZED  CAPITAL GAINS IN
  ACCORDANCE  WITH  THE  TIMING  REQUIREMENTS   IMPOSED  BY  THE  CODE.  AS  A
  PARTNERSHIP  UNDER THE CODE,  THE PORTFOLIO  DOES NOT PAY FEDERAL  INCOME OR
  EXCISE TAXES.
- --------------------------------------------------------------------------------


PERFORMANCE INFORMATION
- ------------------------------------------------------------------------------

FROM TIME TO TIME, THE FUND MAY ADVERTISE ITS AVERAGE  ANNUAL TOTAL RETURN.  The
Fund's average annual total return is determined by computing the average annual
percentage  change in value of $1,000  invested at the maximum  public  offering
price (net asset  value)  for  specified  periods  ending  with the most  recent
calendar quarter, assuming reinvestment of all distributions. The average annual
total return calculation assumes a complete redemption of the investment and the
deduction of any applicable  contingent  deferred sales charge at the end of the
period.  The Fund may also publish  annual and  cumulative  total return figures
from time to time.

    The  Fund may also  publish  total  return  figures  which do not take  into
account  any  contingent  deferred  sales  charge  which  may  be  imposed  upon
redemptions at the end of the specified  period.  Any  performance  figure which
does not take into account the contingent deferred sales charge would be reduced
to the extent such charge is imposed upon a redemption.

    Investors should note that the investment results of the Fund will fluctuate
over time, and any  presentation of the Fund's total return for any prior period
should not be considered as a  representation  of what an investment may earn or
what an investor's total return may be in any future period.  If the expenses of
the Fund or the Portfolio are paid by Eaton Vance,  the Fund's  performance will
be higher.


<PAGE>
INVESTMENT ADVISER OF
SPECIAL INVESTMENT PORTFOLIO
Boston Management and Research
24 Federal Street
Boston, MA 02110

ADMINISTRATOR OF
EV MARATHON SPECIAL EQUITIES FUND
Eaton Vance Management
24 Federal Street
Boston, MA 02110

PRINCIPAL UNDERWRITER
Eaton Vance Distributors, Inc.
24 Federal Street
Boston, MA 02110
(800) 225-6265

CUSTODIAN
Investors Bank & Trust Company
24 Federal Street
Boston, MA 02110

TRANSFER AGENT
The Shareholder Services Group, Inc.
BOS725
P.O. Box 1559
Boston, MA 02104
(800) 262-1122

INDEPENDENT ACCOUNTANTS
Coopers & Lybrand L.L.P.
One Post Office Square
Boston, MA  02109


EV MARATHON SPECIAL EQUITIES FUND
24 FEDERAL STREET
BOSTON, MA 02110

M-SEP

[Logo]
EV MARATHON
SPECIAL EQUITIES
FUND

PROSPECTUS
APRIL 1, 1995
<PAGE>
                                                          STATEMENT OF
                                                          ADDITIONAL INFORMATION
                                 April 1, 1995

                       EV MARATHON SPECIAL EQUITIES FUND
                               24 Federal Street
                          Boston, Massachusetts 02110
                                 (800) 225-6265

    This  Statement  of  Additional  Information  consists of two parts.  Part I
provides  information  about EV Marathon  Special Equities Fund (the "Fund") and
certain other series of Eaton Vance Special Investment Trust (the "Trust"). Part
II  provides  information  solely  about the  Fund.  Where  appropriate,  Part I
includes  cross-references  to the  relevant  sections  of Part II that  provide
additional, Fund-specific information.



                               TABLE OF CONTENTS
                                     PART I

   
Investment Objective, Policies and Restrictions ...........................    2
Other Investment Features .................................................    4
Trustees and Officers .....................................................    5
Investment Adviser and Administrator ......................................    6
Custodian .................................................................    9
Service for Withdrawal ....................................................    9
Determination of Net Asset Value ..........................................    9
Investment Performance ....................................................   10
Taxes .....................................................................   11
Portfolio Security Transactions ...........................................   12
Other Information .........................................................   14
Independent Accountants ...................................................   15
    

                                    PART II

Fees and Expenses .........................................................  a-1
Principal Underwriter .....................................................  a-1
Distribution Plan .........................................................  a-2
Performance Information ...................................................  a-3
Additional Tax Matters ....................................................  a-3
Control Persons and Principal Holders of Securities .......................  a-4
Financial Statements ......................................................  a-5


    THIS  STATEMENT  OF  ADDITIONAL  INFORMATION  IS  NOT A  PROSPECTUS  AND  IS
AUTHORIZED  FOR  DISTRIBUTION  TO  PROSPECTIVE  INVESTORS  ONLY IF  PRECEDED  OR
ACCOMPANIED BY THE PROSPECTUS OF EV MARATHON  SPECIAL  EQUITIES FUND DATED APRIL
1,  1995,  AS  SUPPLEMENTED  FROM TIME TO TIME.  THIS  STATEMENT  OF  ADDITIONAL
INFORMATION SHOULD BE READ IN CONJUNCTION WITH SUCH PROSPECTUS,  A COPY OF WHICH
MAY BE OBTAINED WITHOUT CHARGE BY CONTACTING EATON VANCE DISTRIBUTORS, INC. (THE
"PRINCIPAL UNDERWRITER") (SEE BACK COVER FOR ADDRESS AND PHONE NUMBER).

<PAGE>
                   STATEMENT OF ADDITIONAL INFORMATION
                                 PART I

     The following provides  information about the Fund and certain other series
of the Trust.

                INVESTMENT OBJECTIVE, POLICIES AND RESTRICTIONS

     The investment objective of the Fund, a diversified series of the Trust, is
to seek growth of capital.  The Fund  currently  seeks to achieve its investment
objective  by  investing  its assets in the Special  Investment  Portfolio  (the
"Portfolio"),  a separate registered investment company with the same investment
objective  as the  Fund  and  substantially  the same  investment  policies  and
restrictions  as the  Fund.  The  Portfolio  seeks  to  achieve  its  investment
objective by investing primarily in growth securities.

     The  Trustees  of the Trust may  withdraw  the Fund's  investment  from the
Portfolio at any time, if they determine that it is in the best interests of the
Fund to do so. Upon any such withdrawal,  the Fund's assets would be invested in
another  investment  company with  substantially the same investment  objective,
policies  and  restrictions  as  those  of the Fund or  directly  in  investment
securities in accordance with the Portfolio's  investment policies, as described
below.  Except as indicated below, the approval of the Fund's shareholders would
not be required to change the Portfolio's  investment  policies discussed below,
including those concerning security transactions.

   
     The Portfolio's  investment  policies may involve a portfolio turnover rate
(and  corresponding  brokerage  expenses)  somewhat  greater  than that of other
investment  companies.  Such  turnover  can result from  portfolio  transactions
reflecting Boston Management and Research's ("BMR" or the "Investment  Adviser")
view of a  change  or  prospective  changes  in the  earnings  growth  rate of a
company,  what it considers a more favorable investment  opportunity,  and other
circumstances bearing on the desirability of continuing a given investment.
    

     The following investment restrictions have been adopted by the Fund and may
be changed  only by the vote of a  majority  of the  Fund's  outstanding  voting
securities as defined in the Investment Company Act of 1940 (the "1940 Act").

     As a matter of fundamental policy, the Fund may not:

     (1) With  respect to 75% of its total  assets,  invest  more than 5% of its
total assets (taken at current  value) in the securities of any one issuer or in
more than 10% of the  outstanding  voting  securities of any one issuer,  except
obligations  issued  or  guaranteed  by the U.S.  Government,  its  agencies  or
instrumentalities and except securities of other investment companies;

   
     (2) Borrow  money or issue  senior  securities  except as  permitted by the
Investment Company Act of 1940;
    

     (3)  Purchase  any  securities  on  margin  (but the Fund may  obtain  such
short-term  credits as may be necessary for the clearance of purchases and sales
of securities);

     (4) Underwrite securities of other issuers;

     (5) Concentrate its investments in any particular industry,  but, if deemed
appropriate for the Fund's  objective,  up to 25% of the value of its assets may
be invested in securities of companies in any one industry  (although  more than
25% may be invested in securities issued or guaranteed by the U.S. Government or
its agencies or instrumentalities);

     (6) Invest in real estate  (although it may  purchase  and sell  securities
which are secured by real estate and  securities  of  companies  which invest or
deal in real  estate),  invest in  commodities  or commodity  contracts  for the
purchase or sale of physical commodities; or

     (7)  Make  loans  to any  person  except  by (a)  the  acquisition  of debt
securities  and making  portfolio  investments,  (b)  entering  into  repurchase
agreements, and (c) lending portfolio securities.

     Notwithstanding  the investment  policies and restrictions of the Fund, the
Fund may invest its assets in an open-end  management  investment  company  with
substantially  the same investment  objective,  policies and restrictions as the
Fund.

     The Portfolio has adopted  substantially  the same  fundamental  investment
restrictions as the foregoing numbered  investment  restrictions  adopted by the
Fund; such restrictions cannot be changed without the approval of a "majority of
the  outstanding  voting  securities"  of the  Portfolio,  which as used in this
Statement  of  Additional  Information  means  the  lesser  of  (a)  67%  of the
outstanding  voting  securities of the Portfolio present or represented by proxy
at a  meeting  if the  holders  of  more  than  50% of  the  outstanding  voting
securities  of the Portfolio  are present or  represented  at the meeting or (b)
more than 50% of the outstanding  voting  securities of the Portfolio.  The term
"voting  securities"  as used in this  paragraph  has the same meaning as in the
1940 Act.  Whenever the Trust is requested to vote on a change in the investment
restrictions  of  the  Portfolio,   the  Trust  will  hold  a  meeting  of  Fund
shareholders and will cast its vote as instructed by the shareholders.

     The Fund and the Portfolio  have each adopted the following  nonfundamental
investment  policies  which  may be  changed  with  respect  to the  Fund by the
Trustees  of the Trust  without  approval by the Fund's  shareholders  or may be
changed with respect to the Portfolio by the Trustees of the  Portfolio  without
the  approval of the Fund or the  Portfolio's  other  investors.  As a matter of
nonfundamental  policy,  neither the Fund nor the Portfolio may: (a) invest more
than  15% of net  assets  in  investments  which  are  not  readily  marketable,
including restricted  securities and repurchase agreements maturing in more than
seven days.  Restricted  securities  for the purposes of this  limitation do not
include  securities  eligible for resale pursuant to Rule 144A of the Securities
Act of 1933 that the Board of  Trustees  of the  Trust or the  Portfolio  or its
delegate,  determine  to be  liquid,  based  upon the  trading  markets  for the
specific  security;  (b) invest in put or call options,  except that the Fund or
the  Portfolio  is  authorized  to engage in the writing and sale of call option
contracts  and the purchase of call options as  described  below under  "Writing
Covered Call Options" and the Fund or the Portfolio may invest in warrants where
the grantor  thereof is the issuer of the underlying  securities;  (c) invest in
the  securities  of an issuer  when any  officer  or Trustee of the Trust or the
Portfolio,  the Investment  Adviser, or any officer or trustee of the Investment
Adviser,  owns in excess of 1/2 of 1% of the issuer's  securities if such owners
together  own  more  than 5% of such  securities;  (d)  purchase  securities  of
companies which, including  predecessors,  have not been in continuous operation
for at least three years, except that 5% of total assets (taken at market value)
may be  invested  in  certain  issuers  not in  such  continuous  operation  but
substantially  all of whose  assets are (i)  securities  of one or more  issuers
which have had a record of three years'  continuous  operation or (ii) assets of
an  independent  division of an issuer which  division has had a record of three
years'  continuous  operation;   provided,  however,  that  exempted  from  this
restriction  are U.S.  Government  securities,  securities  of issuers which are
rated by at least one nationally  recognized  statistical  rating  organization,
municipal  obligations  and  obligations  issued or  guaranteed  by any  foreign
government or its agencies or instrumentalities;  (e) sell or contract to sell a
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 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;  (f) invest in interests
in  oil,  gas  or  other  mineral  exploration  or  development  programs  (this
restriction  does not,  however,  prevent  investment in securities of companies
engaged in such  activities);  or (g)  purchase  warrants in excess of 2% of net
assets,  except  that if such  warrants  are listed on the New York or  American
Stock  Exchanges,  the  percentage  restriction  is 5% of net  assets.  Any such
warrants  shall be valued at the lower of cost or market  except  that  warrants
acquired by the Fund or the Portfolio attached to portfolio  securities shall be
deemed to be without value for the purpose of this restriction.

     In order to permit  the sale of shares of the Fund in certain  states,  the
Fund may make commitments  more  restrictive than the policies  described above.
Should  the Fund  determine  that any such  commitment  is no longer in the best
interests of the Fund and its  shareholders,  it will revoke the  commitment  by
terminating sales of its shares in the state(s) involved.  For example, the Fund
has agreed  that it will not  pledge,  mortgage  or  hypothecate  its  portfolio
securities  to the  extent  that on a per  share  basis the  percentage  of such
pledged,  mortgaged  or  hypothecated  assets would exceed 15% of the Fund's net
assets.

                          OTHER INVESTMENT FEATURES

LENDING OF PORTFOLIO SECURITIES
     The  Portfolio  may  seek to  increase  its  income  by  lending  portfolio
securities.  Under present regulatory policies,  including those of the Board of
Governors  of the  Federal  Reserve  System  and  the  Securities  and  Exchange
Commission,  such  loans  may be made to  member  firms  of the New  York  Stock
Exchange, and would be required to be secured continuously by collateral in 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 five days' notice.
During the  existence of a loan,  the  Portfolio  would  continue to receive the
equivalent  of the  interest or dividends  paid by the issuer on the  securities
loaned and would also receive the interest on investment of the collateral.  The
Portfolio  would  not,  however,  have the right to vote any  securities  having
voting  rights  during  the  existence  of the loan,  but would call the loan in
anticipation of an important vote to be taken among holders of the securities or
of the giving or withholding of their consent on a material matter affecting the
investment.  As with  other  extensions  of  credit  there are risks of delay in
recovery  or even loss of rights in the  collateral  should the  borrower of the
securities  fail  financially.  However,  the loans  would be made only to firms
deemed by the  Investment  Adviser  to be of good  standing,  and  when,  in its
judgment,  the consideration which can be earned currently from securities loans
of this type justifies the attendant risk.

     If the Investment  Adviser  determines to make securities  loans, it is not
intended  that the  value  of the  securities  loaned  would  exceed  30% of the
Portfolio's  total assets.  As of the present time, the Trustees have not made a
determination  to engage in this  activity,  and have no  present  intention  of
making such a determination during the current fiscal year.

   
WRITING COVERED CALL OPTIONS
     The  Portfolio  may  engage in the  writing  of call  option  contracts  on
securities  which are owned by the Portfolio  ("covered call options")  when, in
the opinion of the Trustees, such activity is advisable and appropriate.

     A call option  written by the  Portfolio  obligates  the  Portfolio to sell
specified  securities  to the holder of the option at a  specified  price at any
time before the expiration  date. The Portfolio will write a covered call option
on a security for the purpose of increasing  its return on such security  and/or
to  partially  hedge  against  a  decline  in  the  value  of the  security.  In
particular,  when the Portfolio writes an option which expires unexercised or is
closed out by the Portfolio at a profit, it will retain the premium paid for the
option, which will increase its gross income and will offset in part the reduced
value of the portfolio security  underlying the option, or the increased cost of
acquiring  the  security  for  its  portfolio.  However,  if  the  price  of the
underlying security moves adversely to the Portfolio's position,  the option may
be exercised and the Portfolio will be required to sell the underlying  security
at a disadvantageous  price, which may only be partially offset by the amount of
the premium,  if at all. The Portfolio does not intend to write a covered option
on any security if after such  transaction  more than 25% of its net assets,  as
measured by the aggregate  value of the securities  underlying all covered calls
written by the Portfolio, would be subject to such options.
    

     The  Portfolio  may  terminate  its  obligations  under  a call  option  by
purchasing  an option  identical to the one it has written.  Such  purchases are
referred to as "closing purchase transactions."

     An options  position  may be closed out only on an options  exchange  which
provides a  secondary  market  for an option of the same  series.  Although  the
Portfolio  will  generally  purchase or write only those options for which there
appears to be an active  secondary  market,  there is no assurance that a liquid
secondary market on an exchange will exist for any particular  option, or at any
particular  time. For some options no secondary market on an exchange may exist.
In such  event,  it might not be  possible  to effect  closing  transactions  in
particular  options,  with the result that the Portfolio  would have to exercise
its  options in order to realize any profit and would  incur  transaction  costs
upon the sale of underlying  securities pursuant to the exercise of put options.
If the  Portfolio as a covered call option  writer is unable to effect a closing
purchase  transaction  in a  secondary  market,  it will not be able to sell the
underlying  security  until the option  expires or it  delivers  the  underlying
security upon exercise.

     Reasons for the absence of a liquid secondary market on an exchange include
the  following:  (i) there  may be  insufficient  trading  interest  in  certain
options; (ii) restrictions may be imposed by an exchange on opening transactions
or closing  transactions  or both;  (iii) trading  halts,  suspensions  or other
restrictions  may be imposed  with  respect to  particular  classes or series of
options or underlying securities;  (iv) unusual or unforeseen  circumstances may
interrupt normal operations on an exchange; (v) the facilities of an exchange or
the  Options  Clearing  Corporation  may not at all times be  adequate to handle
current trading  volume;  or (vi) one or more exchanges  could,  for economic or
other  reasons,  decide or be compelled at some future date to  discontinue  the
trading of options (or a particular class or series of options),  in which event
the  secondary  market on that  exchange (or in that class or series of options)
would cease to exist,  although  outstanding  options on that  exchange that had
been issued by the Options  Clearing  Corporation  as a result of trades on that
exchange would continue to be exercisable in accordance with their terms.

     The Portfolio  will pay brokerage  commissions  in connection  with writing
options and effecting  closing  purchase  transactions,  as well as for sales of
underlying  securities.  The  writing of  options  could  result in  significant
increases in the Portfolio's  portfolio turnover rate, especially during periods
when market prices of the underlying securities appreciate.

     There is no  assurance  that higher than  anticipated  trading  activity or
other unforeseen events might not, at times, render certain of the facilities of
the  Options  Clearing  Corporation  inadequate,   and  thereby  result  in  the
institution  by an exchange of special  procedures  which may interfere with the
timely execution of customers' orders.

     The amount of the premiums  which the  Portfolio  may pay or receive may be
adversely affected as new or existing  institutions,  including other investment
companies, engage in or increase their option purchasing and writing activities.






                            TRUSTEES AND OFFICERS

     The Trustees and officers of the Trust and the  Portfolio are listed below.
Except as indicated,  each individual has held the office shown or other offices
in the same  company  for the last  five  years.  Unless  otherwise  noted,  the
business  address of each  Trustee  and  officer is 24 Federal  Street,  Boston,
Massachusetts  02110,  which is also the address of the  Portfolio's  investment
adviser,  Boston Management and Research ("BMR" or the "Investment  Adviser"), a
wholly-owned subsidiary of Eaton Vance ("Eaton Vance"); of Eaton Vance's parent,
Eaton Vance Corp. ("EVC"); and of BMR's and Eaton Vance's trustee,  Eaton Vance,
Inc. ("EV"). Eaton Vance and EV are both wholly-owned subsidiaries of EVC. Those
Trustees and officers who are "interested  persons" of the Trust, the Portfolio,
BMR,  Eaton  Vance,  EVC or EV as  defined  in the 1940 Act by  virtue  of their
affiliation with any one or more of the Trust, the Portfolio,  BMR, Eaton Vance,
EVC or EV, are indicated by an asterisk (*).

                   TRUSTEES OF THE TRUST AND THE PORTFOLIO

JAMES B. HAWKES (53), PRESIDENT AND TRUSTEE*
Executive Vice President of BMR, Eaton Vance,  EVC and EV, and a Director of EVC
   and EV.  Director  or Trustee  and  officer of various  investment  companies
   managed by Eaton Vance or BMR.

LANDON T. CLAY (69), TRUSTEE*
Chairman of BMR, Eaton Vance,  EVC and EV and a Director of EVC and EV. Director
   or Trustee and officer of various investment companies managed by Eaton Vance
   or BMR.

DONALD R. DWIGHT (64), TRUSTEE
President of Dwight  Partners,  Inc. (a corporate  relations and  communications
   company) founded in 1988; Chairman of the Board of Newspapers of New England,
   Inc. since 1983. Director or Trustee of various investment  companies managed
   by Eaton Vance or BMR.
Address: Clover Mill Lane, Lyme, New Hampshire 03768

SAMUEL L. HAYES, III (60), TRUSTEE
Jacob J. Schiff Professor of Investment  Banking,  Harvard  University  Graduate
   School of Business Administration.  Director or Trustee of various investment
   companies managed by Eaton Vance or BMR.
Address: Harvard University Graduate School of Business Administration,
Soldiers Field Road, Boston, Massachusetts 02163

NORTON H. REAMER (59), TRUSTEE
President and Director,  United Asset Management  Corporation (a holding company
   owning institutional  investment management firms);  Chairman,  President and
   Director,  The Regis Fund, Inc. (mutual fund). Director or Trustee of various
   investment companies managed by Eaton Vance or BMR.
Address: One International Place, Boston, Massachusetts 02110

JOHN L. THORNDIKE (68), TRUSTEE
Director of  Fiduciary  Company  Incorporated.  Director  or  Trustee of various
   investment companies managed by Eaton Vance or BMR.
Address: 175 Federal Street, Boston, Massachusetts 02110

JACK L. TREYNOR (65), TRUSTEE
Investment  Adviser and  Consultant.  Director or Trustee of various  investment
   companies managed by Eaton Vance or BMR.
Address: 504 Via Almar, Palos Verdes Estates, California 90274

                   OFFICERS OF THE TRUST AND THE PORTFOLIO

PETER F. KIELY (58), VICE PRESIDENT*
Vice President  of BMR,  Eaton Vance and EV.  Director or Trustee and officer of
   various  investment  companies  managed by Eaton Vance or BMR.  Mr. Kiely was
   elected Trustee of the Trust on December 16, 1991.

CLIFFORD H. KRAUSS (40), VICE PRESIDENT*
Vice President of BMR, Eaton Vance and EV.

JAMES L. O'CONNOR (49), TREASURER*
Vice  President  of BMR,  Eaton  Vance,  and EV.  Officer of various  investment
   companies managed by Eaton Vance or BMR.

WILLIAM J. AUSTIN, JR. (43), ASSISTANT TREASURER*
Assistant  Vice  President  of BMR,  Eaton  Vance  and EV.  Officer  of  various
   investment  companies  managed by Eaton Vance or BMR. Mr.  Austin was elected
   Assistant Treasurer of the Trust on December 16, 1991.

THOMAS OTIS (63), SECRETARY*
Vice President and Secretary of BMR, Eaton Vance, EVC and EV. Officer of various
   investment companies managed by Eaton Vance or BMR.

JANET E. SANDERS (59), ASSISTANT TREASURER AND ASSISTANT SECRETARY*
Vice  President  of BMR,  Eaton  Vance and EV.  Officer  of  various  investment
   companies managed by Eaton Vance or BMR.

     Messrs.  Thorndike (Chairman),  Hayes and Reamer are members of the Special
Committee  of the  Board of  Trustees  of the Trust  and of the  Portfolio.  The
Special  Committee's  functions  include  a  continuous  review  of the  Trust's
contractual  relationship with the  Administrator,  the Portfolio's  contractual
relationship with the Investment Adviser, making recommendations to the Trustees
regarding the  compensation  of those  Trustees who are not members of the Eaton
Vance  organization,  and  making  recommendations  to  the  Trustees  regarding
candidates  to fill  vacancies,  as and when they  occur,  in the ranks of those
Trustees who are not "interested  persons" of the Trust,  the Portfolio,  or the
Eaton Vance organization.

     Messrs. Treynor (Chairman) and Dwight are members of the Audit Committee of
the Board of Trustees of the Trust and of the Portfolio.  The Audit  Committee's
functions include making recommendations to the Trustees regarding the selection
of the  independent  accountants,  and reviewing with such  accountants  and the
Treasurer of the Trust and of the Portfolio  matters  relative to accounting and
auditing  practices and  procedures,  accounting  records,  internal  accounting
controls, and the functions performed by the custodian and transfer agent of the
Trust and of the Portfolio.

     Trustees  of the  Portfolio  who are not  affiliated  with  the  Investment
Adviser may elect to defer  receipt of all or a percentage  of their annual fees
in  accordance  with the terms of a  Trustees  Deferred  Compensation  Plan (the
"Plan"). Under the Plan, an eligible Trustee may elect to have his deferred fees
invested by the  Portfolio in the shares of one or more funds in the Eaton Vance
Family of Funds,  and the  amount  paid to the  Trustees  under the Plan will be
determined based upon the performance of such investments. Deferral of Trustees'
fees  in  accordance  with  the  Plan  will  have  a  negligible  effect  on the
Portfolio's assets, liabilities, and net income per share, and will not obligate
the Portfolio to retain the services of any Trustee or obligate the Portfolio to
pay any particular level of compensation to the Trustee.

     For the compensation earned by the Trustees of the Trust and the Portfolio,
see "Fees and Expenses" in Part II of this Statement of Additional Information.

                     INVESTMENT ADVISER AND ADMINISTRATOR

     The  Portfolio  engages  BMR  as  its  investment  adviser  pursuant  to an
Investment  Advisory  Agreement dated August 1, 1994. BMR or Eaton Vance acts as
investment   adviser  to  investment   companies  and  various   individual  and
institutional clients with combined assets under management of approximately $15
billion.

     Eaton  Vance,  its  affiliates  and its  predecessor  companies  have  been
managing  assets  of  individuals  and  institutions  since  1924  and  managing
investment  companies  since 1931.  They  maintain a large staff of  experienced
fixed-income  and equity  investment  professionals  to service the needs of its
clients.  The fixed-income  division focuses on all kinds of taxable investment-
grade and  high-yield  securities,  tax-exempt  investment-grade  and high-yield
securities,  and U.S. Government  securities.  The equity division covers stocks
ranging from blue chip to emerging growth companies.

     BMR manages the  investments  and affairs of the  Portfolio  subject to the
supervision of the Portfolio's Board of Trustees. BMR furnishes to the Portfolio
investment research, advice and supervision, furnishes an investment program and
determines what securities will be purchased,  held or sold by the Portfolio and
what portion,  if any, of the Portfolio's  assets will be held  uninvested.  The
Investment  Advisory  Agreement requires BMR to pay the salaries and fees of all
officers and Trustees of the Portfolio  who are members of the BMR  organization
and all personnel of BMR performing services relating to research and investment
activities.  The Portfolio is responsible for all expenses not expressly  stated
to be payable by BMR under the Investment Advisory Agreement, including, without
implied limitation, (i) expenses of maintaining the Portfolio and continuing its
existence,  (ii)  registration  of the  Portfolio  under  the  1940  Act,  (iii)
commissions, fees and other expenses connected with the acquisition, holding and
disposition of securities and other investments,  (iv) auditing,  accounting and
legal expenses,  (v) taxes and interest,  (vi) governmental fees, (vii) expenses
of issue, sale and redemption of interests in the Portfolio,  (viii) expenses of
registering  and qualifying  the Portfolio and interests in the Portfolio  under
Federal and state  securities  laws and of preparing  and printing  registration
statements or other  offering  statements or memoranda for such purposes and for
distributing  the same to investors,  and fees and expenses of  registering  and
maintaining  registrations  of the  Portfolio and of the  Portfolio's  placement
agent as  broker-dealer  or agent under state  securities laws, (ix) expenses of
reports  and  notices  to  investors  and of  meetings  of  investors  and proxy
solicitations  therefor,  (x) expenses of reports to  governmental  officers and
commissions,  (xi) insurance expenses, (xii) association membership dues, (xiii)
fees,  expenses  and  disbursements  of  custodians  and  subcustodians  for all
services to the Portfolio  (including without  limitation  safekeeping of funds,
securities and other investments,  keeping of books,  accounts and records,  and
determination of net asset values, book capital account balances and tax capital
account  balances),  (xiv) fees,  expenses and disbursements of transfer agents,
dividend  disbursing  agents,  investor  servicing agents and registrars for all
services  to  the  Portfolio,  (xv)  expenses  for  servicing  the  accounts  of
investors, (xvi) any direct charges to investors approved by the Trustees of the
Portfolio, (xvii) compensation and expenses of Trustees of the Portfolio who are
not members of BMR's  organization,  and (xviii) such non-recurring items as may
arise,  including  expenses incurred in connection with litigation,  proceedings
and claims and the  obligation  of the  Portfolio  to  indemnify  its  Trustees,
officers and investors with respect thereto.

     Under the Investment Advisory Agreement with the Portfolio,  BMR receives a
monthly  advisory fee of 5/96 of 1% (equivalent  to 0.625%  annually) of average
daily net assets of the  Portfolio.  As at December 31, 1994,  the Portfolio had
net assets of $64,442,372.  For the period from the start of business, August 1,
1994, to December 31, 1994, BMR received  advisory fees of $175,012  (equivalent
to 0.625% (annualized) of the Portfolio's average daily net assets).

     The Investment Advisory Agreement with BMR remains in effect until February
28,  1996.  It  may  be  continued  indefinitely  thereafter  so  long  as  such
continuance  after  February  28, 1996 is approved at least  annually (i) by the
vote of a majority  of the  Trustees  of the  Portfolio  who are not  interested
persons  of the  Portfolio  or of BMR cast in person  at a meeting  specifically
called  for the  purpose  of  voting on such  approval  and (ii) by the Board of
Trustees of the  Portfolio  or by vote of a majority of the  outstanding  voting
securities of the Portfolio. The Agreement may be terminated at any time without
penalty on sixty days'  written  notice by the Board of Trustees of either party
or by  vote  of  the  majority  of  the  outstanding  voting  securities  of the
Portfolio,  and the Agreement will terminate  automatically  in the event of its
assignment.  The Agreement  provides that BMR may render  services to others and
may permit other fund clients and other  corporations  and  organizations to use
the words "Eaton Vance" or "Boston  Management and Research" in their names. The
Agreement  also  provides  that BMR shall not be liable for any loss incurred in
connection with the performance of its duties,  or action taken or omitted under
that  Agreement,  in the  absence  of  willful  misfeasance,  bad  faith,  gross
negligence  in the  performance  of its  duties  or by  reason  of its  reckless
disregard of its obligations and duties thereunder,  or for any losses sustained
in the acquisition, holding or disposition of any security or other investment.

   
     As indicated in the Prospectus,  Eaton Vance serves as Administrator of the
Fund, but receives no compensation for providing  administrative services to the
Fund.  Under its  agreement  with the Fund,  Eaton  Vance  has been  engaged  to
administer the Fund's affairs, subject to the supervision of the Trustees of the
Trust,  and shall furnish for the use of the Fund office space and all necessary
office facilities,  equipment and personnel for administering the affairs of the
Fund.
    

     The Fund pays all of its own expenses including,  without  limitation,  (i)
expenses of maintaining the Fund and continuing its existence, (ii) registration
of the Trust  under the 1940 Act,  (iii)  commissions,  fees and other  expenses
connected  with the purchase or sale of securities and other  investments,  (iv)
auditing,   accounting  and  legal  expenses,  (v)  taxes  and  interest,   (vi)
governmental fees, (vii) expenses of issue,  sale,  repurchase and redemption of
shares,  (viii)  expenses of registering  and qualifying the Fund and its shares
under  federal  and  state   securities  laws  and  of  preparing  and  printing
prospectuses for such purposes and for distributing the same to shareholders and
investors, and fees and expenses of registering and maintaining registrations of
the Fund and of the Fund's  principal  underwriter,  if any, as broker-dealer or
agent  under  state  securities  laws,  (ix)  expenses of reports and notices to
shareholders and of meetings of shareholders and proxy  solicitations  therefor,
(x) expenses of reports to governmental officers and commissions, (xi) insurance
expenses,   (xii)  association   membership  dues,  (xiii)  fees,  expenses  and
disbursements  of  custodians  and  subcustodians  for all  services to the Fund
(including  without  limitation  safekeeping  of  funds,  securities  and  other
investments,  keeping  of books  and  accounts  and  determination  of net asset
values),  (xiv) fees,  expenses and  disbursements of transfer agents,  dividend
disbursing agents,  shareholder servicing agents and registrars for all services
to the Fund, (xv) expenses for servicing shareholder accounts,  (xvi) any direct
charges  to  shareholders   approved  by  the  Trustees  of  the  Trust,  (xvii)
compensation  and  expenses  of Trustees of the Trust who are not members of the
Eaton Vance  organization,  and (xviii) such  non-recurring  items as may arise,
including  expenses  incurred in connection  with  litigation,  proceedings  and
claims and the  obligation  of the Trust to indemnify  its Trustees and officers
with respect thereto.

     A commitment has been made to a state securities authority that Eaton Vance
will take certain  actions,  if necessary,  so that the Fund's expenses will not
exceed  expense  limitation  requirements  of such state.  The commitment may be
amended or rescinded  by Eaton Vance in response to changes in the  requirements
of the state or for other reasons.

     BMR is a  wholly-owned  subsidiary  of Eaton Vance.  Eaton Vance and EV are
both   wholly-owned   subsidiaries   of  EVC.  BMR  and  Eaton  Vance  are  both
Massachusetts business trusts, and EV is the trustee of BMR and Eaton Vance. The
Directors  of EV are Landon T. Clay,  H. Day  Brigham,  Jr., M. Dozier  Gardner,
James B. Hawkes and Benjamin A. Rowland, Jr. The Directors of EVC consist of the
same persons and John G. L. Cabot and Ralph Z.  Sorenson.  Mr. Clay is chairman,
and Mr.  Gardner is president and chief  executive  officer,  of EVC, BMR, Eaton
Vance and EV. All of the issued and outstanding  shares of Eaton Vance and of EV
are owned by EVC. All of the issued and  outstanding  shares of BMR are owned by
Eaton  Vance.  All  shares of the  outstanding  Voting  Common  Stock of EVC are
deposited  in a Voting  Trust,  which  expires  December  31,  1996,  the Voting
Trustees of which are Messrs.  Brigham,  Clay, Gardner,  Hawkes and Rowland. The
Voting Trustees have unrestricted voting rights for the election of Directors of
EVC. All of the outstanding voting trust receipts issued under said Voting Trust
are  owned by  certain  of the  officers  of BMR and  Eaton  Vance  who are also
officers or  Directors of EVC and EV. As of February  28,  1995,  Messrs.  Clay,
Gardner  and Hawkes each owned 24% of such voting  trust  receipts,  and Messrs.
Rowland  and  Brigham  owned 15% and 13%,  respectively,  of such  voting  trust
receipts.  Messrs.  Clay,  Hawkes and Otis,  who are officers or Trustees of the
Trust  and the  Portfolio,  are  members  of the EVC,  Eaton  Vance,  BMR and EV
organizations.  Messrs.  Austin,  Kiely, Krauss and O'Connor and Ms. Sanders are
officers of the Trust and the Portfolio  and are also members of the BMR,  Eaton
Vance and EV organizations.  BMR will receive the fees paid under the Investment
Advisory Agreement.

     Eaton Vance owns all of the stock of Energex Corporation,  which is engaged
in oil and gas operations.  EVC owns all of the stock of Marblehead Energy Corp.
(which is engaged in oil and gas operations) and 77.3% of the stock of Investors
Bank & Trust  Company,  the  custodian  of the  Fund  and the  Portfolio,  which
provides custodial, trustee and other fiduciary services to investors, including
individuals, employee benefit plans, corporations, investment companies, savings
banks and other institutions.  In addition, Eaton Vance owns all of the stock of
Northeast  Properties,  Inc.,  which  is  engaged  in  real  estate  investment,
consulting and management. EVC owns all of the stock of Fulcrum Management, Inc.
and  MinVen,  Inc.,  which are  engaged in the  development  of  precious  metal
properties. EVC, BMR, Eaton Vance and EV may also enter into other businesses.

     EVC and its  affiliates  and its officers and  employees  from time to time
have  transactions  with various banks,  including the custodian of the Fund and
the Portfolio,  Investors Bank & Trust Company. It is Eaton Vance's opinion that
the  terms  and  conditions  of  such  transactions  were  not and  will  not be
influenced by existing or potential custodial or other relationships between the
Fund or the Portfolio and such banks.

                                  CUSTODIAN

     Investors  Bank  &  Trust  Company  ("IBT"),  24  Federal  Street,  Boston,
Massachusetts,  (a 77.3% owned subsidiary of EVC) acts as custodian for the Fund
and the Portfolio.  IBT has the custody of all cash and securities  representing
the Fund's interest in the Portfolio, has custody of all the Portfolio's assets,
maintains the general  ledger of the  Portfolio  and the Fund,  and computes the
daily net asset value of interests in the  Portfolio  and the net asset value of
shares of the Fund. In such  capacity it attends to details in  connection  with
the  sale,  exchange,   substitution,   transfer  or  other  dealings  with  the
Portfolio's investments,  receives and disburses all funds, and performs various
other ministerial  duties upon receipt of proper  instructions from the Fund and
the Portfolio.  IBT charges fees which are  competitive  within the industry.  A
portion of the fee relates to custody, bookkeeping and valuation services and is
based upon a percentage  of Fund and  Portfolio  net assets and a portion of the
fee relates to activity charges, primarily the number of portfolio transactions.
These  fees are then  reduced by a credit for cash  balances  of the  particular
investment  company at the custodian equal to 75% of the 91-day,  U.S.  Treasury
Bill auction rate applied to the particular  investment  company's average daily
collected  balances  for the week.  In view of the  ownership of EVC in IBT, the
Portfolio is treated as a  self-custodian  pursuant to Rule 17f-2 under the 1940
Act, and the Portfolio's  investments  held by IBT as custodian are thus subject
to additional examinations by the Portfolio's independent auditors as called for
by such Rule.  For the period  from the start of  business,  August 1, 1994,  to
December 31, 1994, the Portfolio paid IBT $20,710. For the custody fees that the
Fund paid to IBT,  see  "Fees  and  Expenses"  in Part II of this  Statement  of
Additional Information.

                            SERVICE FOR WITHDRAWAL

   
     By a  standard  agreement,  the  Trust's  Transfer  Agent  will send to the
shareholder  regular  monthly or  quarterly  payments  of any  permitted  amount
designated  by  the  shareholder  (see  "Eaton  Vance  Shareholder  Services  --
Withdrawal Plan" in the Fund's current  Prospectus)  based upon the value of the
shares  held.  The checks will be drawn from share  redemptions  and hence are a
return  of  principal.  Income  dividends  and  capital  gain  distributions  in
connection  with  withdrawal  accounts will be credited at net asset value as of
the  record  date for each  distribution.  Continued  withdrawals  in  excess of
current  income will  eventually use up principal,  particularly  in a period of
declining market prices.
    

     To use this  service,  at least  $5,000  in cash or  shares  at the  public
offering  price  will  have  to  be  deposited  with  the  Transfer  Agent.  The
maintenance of a withdrawal plan  concurrently with purchases of additional Fund
shares would be disadvantageous if a sales charge is included in such purchases.
A  shareholder  may not have a withdrawal  plan in effect at the same time he or
she has  authorized  Bank  Automated  Investing or is otherwise  making  regular
purchases  of Fund shares.  Either the  shareholder,  the Transfer  Agent or the
Principal  Underwriter will be able to terminate the withdrawal plan at any time
without penalty.

                       DETERMINATION OF NET ASSET VALUE

     The  net  asset  value  of the  Portfolio  and of  shares  of the  Fund  is
determined by the  custodian,  IBT, (as agent for the Fund and the Portfolio) in
the  manner  described  under  "Valuing  Fund  Shares"  in  the  Fund's  current
Prospectus.  The Fund and the Portfolio will be closed for business and will not
price their respective shares or interests on the following  business  holidays:
New  Year's  Day,  Presidents'  Day,  Good  Friday  (a New York  Stock  Exchange
holiday),  Memorial  Day,  Independence  Day,  Labor Day,  Thanksgiving  Day and
Christmas Day.

   
     Securities listed on securities  exchanges or in the NASDAQ National Market
are valued at closing  sale  prices.  Unlisted  or listed  securities  for which
closing sale prices are not  available are valued at the mean between the latest
bid and asked prices.  Securities for which market  quotations are  unavailable,
including  any  security  the  disposition  of which  is  restricted  under  the
Securities  Act of 1933,  and other assets will be appraised at their fair value
as  determined  in good  faith by or at the  direction  of the  Trustees  of the
Portfolio.  Short-term  obligations maturing in sixty days or less are valued at
original cost which, when combined with amortized  discount or accrued interest,
the Trustees of the Portfolio have determined approximates fair market value.
    

     Each investor in the  Portfolio,  including the Fund,  may add to or reduce
its  investment  in the  Portfolio on each day the New York Stock  Exchange (the
"Exchange")  is open for trading  ("Portfolio  Business Day") as of the close of
regular trading on the Exchange (the "Portfolio  Valuation Time").  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,  determined  on the prior
Portfolio Business Day, which represented that investor's share of the aggregate
interests in the Portfolio on such prior day. Any additions or  withdrawals  for
the  current  Portfolio  Business  Day will then be  recorded.  Each  investor's
percentage of the aggregate interest in the Portfolio will then be recomputed as
a percentage equal to a fraction (i) the numerator of which is the value of such
investor's investment in the Portfolio as of the Portfolio Valuation Time on the
prior  Portfolio  Business 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
on the current  Portfolio  Business Day and (ii) the denominator of which is the
aggregate net asset value of the Portfolio as of the Portfolio Valuation Time on
the prior  Portfolio  Business Day plus or minus, as the case may be, the amount
of the net  additions to or  withdrawals  from the  aggregate  investment in the
Portfolio  on  the  current  Portfolio  Business  Day 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  for the current  Portfolio
Business Day.

                            INVESTMENT PERFORMANCE

     The average annual total return is determined by multiplying a hypothetical
initial  purchase order of $1,000 by the average annual  compound rate of return
(including  capital  appreciation/depreciation,  and dividends and distributions
paid and  reinvested)  for the stated  period and  annualizing  the result.  The
calculation  assumes that all dividends from net  investment  income and capital
gain  distributions are reinvested at net asset value on the reinvestment  dates
during the period (and either (i) the deduction of the maximum sales charge from
the  initial  $1,000  purchase  order,  or  (ii) a  complete  redemption  of the
investment  and, if applicable,  the deduction of any contingent  deferred sales
charge at the end of the period). For information concerning the total return of
the  Fund,  see  "Performance  Information"  in  Part II of  this  Statement  of
Additional Information.

     The Fund's  total  return may be compared to the  Consumer  Price Index and
various domestic  securities indices,  for example:  Standard & Poor's 400 Stock
Index, Standard & Poor's 500 Stock Index, NASDAQ National Market System, Merrill
Lynch U.S. Treasury (15-year plus) Index, Lehman Brothers Government/  Corporate
Bond Index,  and the Dow Jones Industrial  Average.  The Fund's total return and
comparisons with these indices may be used in advertisements  and in information
furnished to present or prospective shareholders.

     Information used in advertisements and in materials furnished to present or
prospective  shareholders may include  statistics,  data and performance studies
prepared by independent  organizations,  (e.g., Ibbotson Associates,  Standard &
Poor's Ratings Group,  Merrill Lynch, Pierce,  Fenner & Smith, Inc.,  Bloomberg,
L.P., Dow Jones & Company,  Inc., and The Federal  Reserve Board) or included in
various  publications  (e.g., The Wall Street Journal,  Barron's and The Decade:
Wealth of Investments in U.S. Stocks,  Bonds, Bills & Inflation)  reflecting the
investment  performance  or return  achieved  by  various  classes  and types of
investments  (e.g.,  common stocks,  small company stocks,  long-term  corporate
bonds,  long-term  government  bonds,  intermediate-term  government bonds, U.S.
Treasury bills) over various  periods of time.  This  information may be used to
illustrate the benefits of long-term investments in common stocks.

     From time to time,  information about the portfolio allocation and holdings
of the Portfolio may be included in advertisements  and other material furnished
to present and prospective shareholders.

     The Portfolio's asset allocation on January 31, 1995 was as follows:

                                              PERCENT OF NET ASSETS
                                              ---------------------
            Common stocks                              93.2%
            Preferred stocks                            0.1%
            Cash & equivalents                          6.7%
                                                      ------
                Total                                   100%

     The Portfolio's ten largest common stock holdings on January 31, 1995 were:
 
           COMPANY                             PERCENT OF NET ASSETS
            -------                            ---------------------
             Boston Scientific Corp.                    3.9%
            Wabash National Corp.                       3.5%
            FIserv Incorporated                         3.5%
            Federal National Mortgage Association       3.4%
            Mylan Labs. Inc.                            3.3%
            Consolidated Stores Corp.                   2.8%
            Dallas Semiconductor Corp.                  2.7%
            MFS Communications Co., Inc.                2.7%
            Home Depot                                  2.6%
            Loctite Corp.                               2.4%
                                                       -----
                Total                                  30.8%

     From  time  to  time,   evaluations  of  the  Fund's  performance  made  by
independent sources (e.g., Lipper Analytical  Services,  Inc.,  CDA/Wiesenberger
and  Morningstar,  Inc.)  may be  used  in  advertisements  and  in  information
furnished to present or prospective shareholders.  See "Performance Information"
in Part II of this Statement of Additional Information.

     Information used in  advertisements  and in materials  furnished to present
and prospective shareholders may include statements or illustrations relating to
the  appropriateness  of types of  securities  and/or  mutual funds which may be
employed to meet specific financial goals, such as (1) funding  retirement,  (2)
paying for children's education,  and (3) financially  supporting aging parents.
These  three  financial  goals  may be  referred  to in such  advertisements  or
materials as the "Triple Squeeze."

                                    TAXES

     See  "Distributions  and  Taxes"  in  the  Fund's  current  Prospectus  and
"Additional Tax Matters" in Part II of this Statement of Additional Information.

     Each series of the Trust is treated as a separate entity for Federal income
tax purposes. The Fund will elect to be treated and intends to qualify each year
as a regulated  investment  company  ("RIC") under the Internal  Revenue Code of
1986, as amended (the "Code").  Accordingly, the Fund intends to satisfy certain
requirements relating to sources of its income and diversification of its assets
and to distribute  its net investment  income and net realized  capital gains in
accordance with the timing requirements  imposed by the Code, so as to avoid any
Federal income or excise tax to the Fund. Because the Fund invests its assets in
the  Portfolio,  the Portfolio  normally must satisfy the  applicable  source of
income and  diversification  requirements in order for the Fund to satisfy them.
The Portfolio will allocate at least annually among its investors, including the
Fund, the Portfolio's net investment income, net realized capital gains, and any
other items of income,  gain, loss, deduction or credit. The Portfolio will make
allocations to the Fund in accordance  with the Code and applicable  regulations
and will make  moneys  available  for  withdrawal  at  appropriate  times and in
sufficient   amounts  to  enable  the  Fund  to  satisfy  the  tax  distribution
requirements that apply to the Fund and that must be satisfied in order to avoid
Federal  income  and/or  excise tax on the Fund.  For  purposes of applying  the
requirements  of the Code  regarding  qualification  as a RIC,  the Fund will be
deemed (i) to own its proportionate share of each of the assets of the Portfolio
and (ii) to be entitled to the gross  income of the  Portfolio  attributable  to
such share.

     In order to avoid  Federal  excise  tax,  the Code  requires  that the Fund
distribute  by December 31 of each  calendar  year at least 98% of its  ordinary
income (not including  tax-exempt income) for such year, and at least 98% of the
excess of its realized  capital gains over its realized  capital  losses,  after
reduction by any available  capital loss  carryforwards,  and 100% of any income
from the prior year (as  previously  computed) that was not paid out during such
year and on which the Fund paid no Federal  income tax.  Further,  under current
law,  provided that the Fund  qualifies as a RIC for Federal income tax purposes
and the Portfolio is treated as a partnership for  Massachusetts and Federal tax
purposes, neither the Fund nor the Portfolio is liable for any income, corporate
excise or franchise tax in the Commonwealth of Massachusetts.

     The  Portfolio's  transactions  in options  will be subject to special  tax
rules that may affect the  amount,  timing and  character  of  distributions  to
shareholders.  For  example,  certain  positions  held  by  the  Portfolio  that
substantially  diminish  the  Portfolio's  risk of loss  with  respect  to other
positions in its portfilio may constitute  "straddles," which are subject to tax
rules that may cause  deferral of Portfolio  losses,  adjustments in the holding
period of portfolio  securities  and  conversion  of short-term  into  long-term
capital losses.

   
     Distributions  of net  investment  income and the excess of net  short-term
capital  gains over net  long-term  capital  losses  earned by the Portfolio and
allocated to the Fund are taxable to shareholders of the Fund as ordinary income
whether received in cash or in additional shares. Distributions of the excess of
net long-term  capital gains over net short-term  capital losses  (including any
capital  losses  carried  forward from prior years)  earned by the Portfolio and
allocated to the Fund are taxable to  shareholders  as long-term  capital gains,
whether received in cash or in additional shares and regardless of the length of
time their shares of the Fund have been held. Certain distributions  declared in
October,  November or December and paid the  following  January will be taxed to
shareholders  as if  received  on  December  31 of the  year in  which  they are
declared.
    

     A  portion  of  distributions  made by the  Fund  which  are  derived  from
dividends received by the Portfolio from domestic  corporations and allocated to
the Fund may qualify for the dividends-received deduction for corporations.  The
dividends-received deduction for corporate shareholders is reduced to the extent
the shares of the Fund with  respect to which the  dividends  are  received  are
treated as  debt-financed  under the Federal income tax law and is eliminated if
the  shares  are  deemed to have been  held for less  than 46 days.  Receipt  of
certain  distributions  qualifying  for the deduction may result in reduction of
the tax basis of the corporate shareholder's shares.  Distributions eligible for
the  dividends-received  deduction  may give rise to or increase an  alternative
minimum tax for corporations.

     Any loss  realized  upon the  redemption  or exchange of shares of the Fund
within a  tax-holding  period of 6 months or less will be treated as a long-term
capital loss to the extent of any  distribution  of net long-term  capital gains
with respect to such shares.  In addition,  a loss  realized on a redemption  of
Fund shares may be disallowed under certain "wash sale" rules if other shares of
the Fund are  acquired  within a period  beginning  30 days before and ending 30
days after the date of such  redemption.  Any disallowed  loss will result in an
adjustment  to the  shareholder's  tax basis in some or all of the other  shares
acquired.

     The Portfolio may be subject to foreign  withholding  taxes with respect to
income on certain foreign  securities.  These taxes may be reduced or eliminated
under the terms of an applicable U.S.  income tax treaty.  As it is not expected
that more than 50% of the value of the  total  assets of the Fund,  taking  into
account its allocable share of the Portfolio's total assets, at the close of any
taxable  year  of  the  Fund  will  consist  of  securities  issued  by  foreign
corporations,  the Fund will not be  eligible  to pass  through to  shareholders
their  proportionate  share  of any  foreign  taxes  paid by the  Portfolio  and
allocated to the Fund, with the result that shareholders of the Fund will not be
entitled to take any foreign tax credits or deductions for foreign taxes paid by
the Portfolio  and allocated to the Fund.  Certain  foreign  exchange  gains and
losses  realized by the  Portfolio  and allocated to the Fund will be treated as
ordinary income and losses.  Certain uses of foreign currency and investments by
the Portfolio in certain "passive foreign  investment  companies" may be limited
or a tax  election  may be made if  available,  in order to preserve  the Fund's
qualification as a RIC and/or to avoid imposition of a tax on the Fund.

     Special tax rules apply to  Individual  Retirement  Accounts  ("IRAs")  and
other retirement plans and persons  investing  through such plans should consult
their tax advisers for more information. The deductibility of such contributions
may be restricted or eliminated for particular shareholders.

     Amounts paid by the Fund to individuals and certain other  shareholders who
have not provided the Fund with their correct taxpayer identification number and
certain required  certifications,  as well as shareholders  with respect to whom
the Fund has  received  notification  from the  Internal  Revenue  Service  or a
broker,  may be subject to "backup"  withholding  of Federal income tax from the
Fund's dividends and  distributions  and the proceeds of redemptions  (including
repurchases  and  exchanges)  at  a  rate  of  31%.  An  individual's   taxpayer
identification number is generally his or her social security number.

     Non-resident  alien individuals and certain foreign  corporations and other
foreign entities  generally will be subject to a U.S.  withholding tax at a rate
of 30% on the Fund's  distributions  from its ordinary  income and the excess of
its net short-term  capital gain over its net long-term capital loss, unless the
tax is reduced or eliminated by an applicable tax treaty. Distributions from the
excess of the Fund's net long-term capital gain over its net short-term  capital
loss  received  by such  shareholders  and  any  gain  from  the  sale or  other
disposition of shares of the Fund generally will not be subject to U.S.  Federal
income taxation,  provided that non-resident  alien status has been certified by
the  shareholder.  Different U.S. tax consequences may result if the shareholder
is engaged in a trade or business in the United States, is present in the United
States for a sufficient  period of time during a taxable year to be treated as a
U.S. resident, or fails to provide any required certifications  regarding status
as a non-resident alien investor.  Foreign shareholders should consult their tax
advisers regarding the U.S. and foreign tax consequences of an investment in the
Fund.

     The foregoing  discussion does not address the special tax rules applicable
to certain classes of investors,  such as retirement plans, tax-exempt entities,
insurance  companies and financial  institutions.  Shareholders  should  consult
their own tax advisers with respect to special tax rules that may apply in their
particular  situations,  as well as the state, local or foreign tax consequences
of investing in the Fund.

                       PORTFOLIO SECURITY TRANSACTIONS

     Decisions  concerning the execution of portfolio  security  transactions of
the Portfolio, including the selection of the market and the broker-dealer firm,
are made by BMR. BMR is also  responsible for the execution of transactions  for
all other accounts managed by it.

     BMR places the  security  transactions  of the  Portfolio  and of all other
accounts managed by it for execution with many broker-dealer firms. BMR uses its
best efforts to obtain  execution of portfolio  transactions at prices which are
advantageous to the Portfolio and (when a disclosed commission is being charged)
at reasonably competitive commission rates. In seeking such execution,  BMR will
use its best judgment in evaluating  the terms of a  transaction,  and will give
consideration to various relevant factors, including without limitation the size
and type of the transaction,  the general execution and operational capabilities
of the  broker-dealer,  the nature and character of the market for the security,
the confidentiality, speed and certainty of effective execution required for the
transaction, the reputation,  reliability, experience and financial condition of
the   broker-dealer,   the  value  and  quality  of  services  rendered  by  the
broker-dealer in other  transactions,  and the reasonableness of the commission,
if  any.  Transactions  on  United  States  stock  exchanges  and  other  agency
transactions  involve  the  payment by the  Portfolio  of  negotiated  brokerage
commissions.  Such commissions vary among different  broker-dealer  firms, and a
particular  broker-dealer  may charge  different  commissions  according to such
factors as the difficulty and size of the transaction and the volume of business
done with such broker-dealer. Transactions in foreign securities usually involve
the payment of fixed  brokerage  commissions,  which are  generally  higher than
those in the United States.  There is generally no stated commission in the case
of  securities  traded in the  over-the-counter  markets,  but the price paid or
received by the  Portfolio  usually  includes an  undisclosed  dealer  markup or
markdown.  In an  underwritten  offering the price paid by the  Portfolio  often
includes a disclosed fixed commission or discount retained by the underwriter or
dealer.  Although  commissions paid on portfolio security  transactions will, in
the  judgment of BMR,  be  reasonable  in relation to the value of the  services
provided,  commissions  exceeding  those which  another firm might charge may be
paid to  broker-dealers  who were selected to execute  transactions on behalf of
the  Portfolio  and BMR's  other  clients in part for  providing  brokerage  and
research services to BMR.

     As authorized in Section  28(e) of the  Securities  Exchange Act of 1934, a
broker or dealer who executes a portfolio transaction on behalf of the Portfolio
may receive a commission which is in excess of the amount of commission  another
broker or dealer  would have  charged  for  effecting  that  transaction  if BMR
determines in good faith that such  commission was reasonable in relation to the
value of the brokerage and research services provided. This determination may be
made on the basis of either that  particular  transaction or on the basis of the
overall  responsibilities  which BMR and its  affiliates  have for accounts over
which they exercise investment discretion. In making any such determination, BMR
will not attempt to place a specific  dollar value on the brokerage and research
services  provided or to  determine  what  portion of the  commission  should be
related to such services.  Brokerage and research services may include advice as
to the value of securities,  the  advisability of investing in,  purchasing,  or
selling securities,  and the availability of securities or purchasers or sellers
of securities;  furnishing analyses and reports concerning issuers,  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);  and the  "Research
Services" referred to in the next paragraph.

     It is a  common  practice  in the  investment  advisory  industry  for  the
advisers of investment  companies,  institutions  and other investors to receive
research,  statistical  and  quotation  services,  data,  information  and other
services,  products and materials  which assist such advisers in the performance
of their investment  responsibilities  ("Research  Services") from broker-dealer
firms which execute portfolio  transactions for the clients of such advisers and
from third parties with which these broker-dealers have arrangements. Consistent
with this practice, BMR receives Research Services from many broker-dealer firms
with which BMR places the  Portfolio  transactions  and from third  parties with
which these  broker-dealers  have arrangements.  These Research Services include
such  matters as general  economic  and market  reviews,  industry  and  company
reviews,  evaluations of securities and portfolio  strategies and  transactions,
recommendations  as to the purchase and sale of securities  and other  portfolio
transactions,  financial, industry and trade publications,  news and information
services,  pricing and quotation  equipment and services,  and research oriented
computer hardware,  software,  data bases and services.  Any particular Research
Service obtained  through a broker-dealer  may be used by BMR in connection with
client  accounts  other  than  those  accounts  which  pay  commissions  to such
broker-dealer.  Any such Research  Service may be broadly useful and of value to
BMR in rendering investment advisory services to all or a significant portion of
its  clients,  or may be  relevant  and  useful for the  management  of only one
client's  account  or of a few  clients'  accounts,  or may be  useful  for  the
management  of merely a segment  of certain  clients'  accounts,  regardless  of
whether  any such  account or accounts  paid  commissions  to the  broker-dealer
through which such Research  Service was obtained.  The advisory fee paid by the
Portfolio  is not reduced  because BMR  receives  such  Research  Services.  BMR
evaluates  the nature and  quality of the  various  Research  Services  obtained
through  broker-dealer firms and attempts to allocate sufficient  commissions to
such  firms to ensure  the  continued  receipt of  Research  Services  which BMR
believes are useful or of value to it in rendering  investment advisory services
to its clients.

     Subject to the  requirement  that BMR shall use its best efforts to seek to
execute Portfolio security transactions at advantageous prices and at reasonably
competitive  commission  rates or spreads,  BMR is  authorized  to consider as a
factor in the selection of any broker-dealer firm with whom Portfolio orders may
be placed the fact that such firm has sold or is  selling  shares of the Fund or
of other investment  companies  sponsored by BMR or Eaton Vance.  This policy is
not inconsistent with a rule of the National  Association of Securities Dealers,
Inc.,  which rule  provides  that no firm  which is a member of the  Association
shall favor or disfavor the distribution of shares of any particular  investment
company or group of investment  companies on the basis of brokerage  commissions
received or expected by such firm from any source.

     Securities  considered  as  investments  for  the  Portfolio  may  also  be
appropriate for other investment accounts managed by BMR or its affiliates.  BMR
will attempt to allocate  equitably  portfolio  security  transactions among the
Portfolio and the portfolios of its other investment accounts whenever decisions
are made to purchase or sell securities by the Portfolio and one or more of such
other accounts simultaneously.  In making such allocations,  the main factors to
be considered are the respective investment objectives of the Portfolio and such
other  accounts,  the  relative  size  of  portfolio  holdings  of the  same  or
comparable securities,  the availability of cash for investment by the Portfolio
and such  accounts,  the size of investment  commitments  generally  held by the
Portfolio  and such  accounts  and the opinions of the persons  responsible  for
recommending  investments  to  the  Portfolio  and  such  accounts.  While  this
procedure  could  have a  detrimental  effect  on the  price  or  amount  of the
securities  available to the  Portfolio  from time to time, it is the opinion of
the Trustees of the Trust and the Portfolio that the benefits available from the
BMR  organization  outweigh  any  disadvantage  that may arise from  exposure to
simultaneous transactions.  For the period from the start of business, August 1,
1994, to December 31, 1994, the Portfolio paid brokerage  commissions of $36,041
on portfolio securities  transactions.  Of the total brokerage commissions paid,
approximately $31,811 was paid in respect of portfolio transactions  aggregating
approximately  $12,822,000 to firms which provided some research services to BMR
(although  many  of  such  firms  may  have  been  selected  in  any  particular
transaction primarily because of their execution capabilities).

                              OTHER INFORMATION

     On July 21,  1992,  the Trust  changed  its name from Eaton  Vance  Special
Equities Fund to Eaton Vance Special Investment Trust. The Trust is organized as
a business trust under the laws of the  Commonwealth  of  Massachusetts  under a
Declaration  of Trust  dated  March  27,  1989,  as  amended.  The  Trust is the
successor to a corporation which commenced  offering its shares to the public in
April, 1968. The Trust changed its name from Eaton & Howard Growth Fund, Inc. on
September  24, 1982.  Eaton  Vance,  pursuant to its  agreement  with the Trust,
controls the use of the words "Eaton  Vance" in the Trust's name and may use the
words "Eaton Vance" in other connections and for other purposes.

     The  Trust's  Declaration  of Trust may be  amended  by the  Trustees  when
authorized  by vote of a majority of the  outstanding  voting  securities of the
Trust affected by the amendment.  The Trustees may also amend the Declaration of
Trust  without  the vote or  consent of  shareholders  to change the name of the
Trust or to make such other changes as do not have a materially  adverse  effect
on the rights or  interests  of  shareholders  or if they deem it  necessary  to
conform the  Declaration  to the  requirements  of  applicable  Federal  laws or
regulations.  The  Trust's  by-laws  provide  that the Fund will  indemnify  its
Trustees and officers  against  liabilities and expenses  incurred in connection
with any litigation or proceeding in which they may be involved because of their
offices  with the Trust.  However,  no  indemnification  will be provided to any
Trustee or officer for any liability to the Trust or its  shareholders by reason
of willful misfeasance, bad faith, gross negligence or reckless disregard of the
duties involved in the conduct of his office.

     Under Massachusetts law, if certain conditions  prevail,  shareholders of a
Massachusetts  business  trust  (such  as the  Trust)  could be  deemed  to have
personal  liability  for  the  obligations  of the  Trust.  Numerous  investment
companies  registered  under  the 1940 Act have  been  formed  as  Massachusetts
business trusts, and management is not aware of an instance where such liability
has  been  imposed.  The  Trust's  Declaration  of  Trust  contains  an  express
disclaimer  of  liability on the part of the Fund  shareholders  and the Trust's
By-laws  provide  that the Trust shall  assume the defense on behalf of any Fund
shareholders. Moreover, the Trust's By-laws also provide for indemnification out
of the property of the Fund of any shareholder held personally  liable solely by
reason of being or having  been a  shareholder  for all loss or expense  arising
from such  liability.  The assets of the Fund are  readily  marketable  and will
ordinarily  substantially exceed its liabilities.  In light of the nature of the
Fund's  business  and the nature of its  assets,  management  believes  that the
possibility  of the Fund's  liability  exceeding  its assets,  and therefore the
shareholder's risk of personal liability, is extremely remote.

     As permitted by  Massachusetts  law,  there will normally be no meetings of
shareholders for the purpose of electing  Trustees unless and until such time as
less than a majority  of the  Trustees  of the Trust  holding  office  have been
elected by shareholders.  In such an event the Trustees then in office will call
a shareholders'  meeting for the election of Trustees.  Except for the foregoing
circumstances  and unless  removed by action of the  shareholders  in accordance
with the Trust's  By-laws,  the Trustees  shall  continue to hold office and may
appoint successor Trustees.

     The  Trust's  By-laws  provide  that no person  shall serve as a Trustee if
shareholders  holding two-thirds of the outstanding shares have removed him from
that office either by a written  declaration filed with the Trust's custodian or
by votes cast at a meeting called for that purpose.  The By-laws further provide
that under certain circumstances the shareholders may call a meeting to remove a
Trustee and that the Trust is required to provide  assistance  in  communicating
with shareholders about such a meeting.

     In accordance  with the  Declaration of Trust of the Portfolio,  there will
normally be no meetings of the  investors  for the purpose of electing  Trustees
unless  and until  such  time as less than a  majority  of the  Trustees  of the
Portfolio  holding  office have been elected by investors.  In such an event the
Trustees  then in office will call an  investors'  meeting  for the  election of
Trustees. Except for the foregoing circumstances and unless removed by action of
the investors in  accordance  with the  Portfolio's  Declaration  of Trust,  the
Trustees shall continue to hold office and may appoint successor Trustees.

     The  Declaration  of Trust of the  Portfolio  provides that no person shall
serve as a Trustee if investors holding two-thirds of the outstanding  interests
have removed him from that office either by a written declaration filed with the
Portfolio's custodian or by votes cast at a meeting called for that purpose. The
Declaration  of Trust  further  provides that under  certain  circumstances  the
investors  may call a  meeting  to remove a Trustee  and that the  Portfolio  is
required to provide  assistance in  communicating  with  investors  about such a
meeting.

     The right to redeem can be  suspended  and the  payment  of the  redemption
price deferred when the Exchange is closed (other than for customary weekend and
holiday closings),  during periods when trading on the Exchange is restricted as
determined by the Securities and Exchange Commission, or during any emergency as
determined by the Commission which makes it  impracticable  for the Portfolio to
dispose  of its  securities  or value its  assets,  or during  any other  period
permitted by order of the Commission for the protection of investors.

                           INDEPENDENT ACCOUNTANTS

     Coopers & Lybrand L.L.P.,  One Post Office Square,  Boston,  Massachusetts,
are the independent accountants for the Fund and the Portfolio,  providing audit
services,  tax return preparation,  and assistance and consultation with respect
to the preparation of filings with the Securities and Exchange Commission.

     For the financial  statements of the Fund and the Portfolio see  "Financial
Statements" in Part II of this Statement of Additional Information.



<PAGE>

                      STATEMENT OF ADDITIONAL INFORMATION
                                    PART II

    This Part II provides  information  about EV MARATHON SPECIAL EQUITIES FUND.
The Fund became a series of the Trust on July 27, 1994.

                               FEES AND EXPENSES
ADMINISTRATOR

    As stated under  "Investment  Adviser and  Administrator"  in Part I of this
Statement of Additional Information,  the Administrator receives no compensation
for providing administrative services to the Fund. For the period from the start
of  business,  August 22,  1994,  to  December  31,  1994,  $4,325 of the Fund's
operating expenses were allocated to the Administrator.

   
DISTRIBUTION PLAN
    The  Distribution  Plan and  Distribution  Agreement  remain in effect until
April 28, 1995 and may be continued as described  under  "Distribution  Plan" in
the Prospectus. Pursuant to Rule 12b-1, the Plan has been approved by the Fund's
initial sole shareholder (Eaton Vance) and by the Board of Trustees of the Trust
as required by Rule 12b-1. For the period from the start of business, August 22,
1994, to December 31, 1994,  the Fund made sales  commission  payments under the
Plan to the Principal Underwriter aggregating $486, which amount was used by the
Principal  Underwriter to partially defray sales commissions  aggregating $1,055
paid during such period by the  Principal  Underwriter  to  Authorized  Firms on
sales of Fund shares.  During such period,  contingent  deferred  sales  charges
aggregating  approximately $62 were imposed on early redeeming  shareholders and
paid to the Principal  Underwriter to partially defray sales commissions.  As at
December  31,  1994,  the  outstanding  uncovered  distribution  charges  of the
Principal  Underwriter  calculated  under  the Plan  amounted  to  approximately
$21,676  (which  amount was  equivalent to 3.5% of the Fund's net assets on such
day).  For the period  ended  December  31,  1994,  the Fund made no service fee
payments  under the Plan. The Fund expects to begin accruing for its service fee
payments during the quarter ending September 30, 1995.
    

PRINCIPAL UNDERWRITER
    For the period from the start of business,  August 22, 1994, to December 31,
1994, the Fund paid no repurchase transaction fees to the Principal Underwriter.

CUSTODIAN
    For the period from the start of business,  August 22, 1994, to December 31,
1994, the Fund paid IBT $249.

TRUSTEES
    The fees and  expenses of those  Trustees of the Trust and of the  Portfolio
who are not  members of the Eaton Vance  organization  are paid by the Fund (and
the other  series of the  Trust)  and the  Portfolio,  respectively.  During the
fiscal year ended December 31, 1994, the Trustees of the Trust and the Portfolio
earned the  following  compensation  in their  capacities  as Trustees  from the
Trust,  the  Portfolio  and the other funds in the Eaton Vance fund  complex\1/:

<TABLE>
<CAPTION>
                           AGGREGATE         AGGREGATE           RETIREMENT          TOTAL COMPENSATION
                          COMPENSATION      COMPENSATION       BENEFIT ACCRUED         FROM TRUST AND
NAME                       FROM FUND       FROM PORTFOLIO     FROM FUND COMPLEX         FUND COMPLEX
- ----                    ----------------  ----------------  ---------------------  ----------------------
<S>                         <C>                 <C>                 <C>                    <C>
Donald R. Dwight            $-- 0 --            $297<F2>             $8,750                $135,000
Samuel L. Hayes, III         -- 0 --             302<F3>              8,865                 142,500
Norton H. Reamer             -- 0 --             318                -- 0 --                 135,000
John L. Thorndike            -- 0 --             338                -- 0 --                 140,000
Jack L. Treynor              -- 0 --             301                -- 0 --                 140,000
<FN>
<F1>  The  Eaton  Vance  fund  complex  consists  of 201  registered  investment companies or series thereof.
<F2>  Includes $98 of deferred compensation.
<F3>  Includes $101 of deferred compensation.
</TABLE>

<PAGE>
                             PRINCIPAL UNDERWRITER

    Under the Distribution Agreement the Principal Underwriter acts as principal
in selling shares of the Fund. The expenses of printing  copies of  prospectuses
used to  offer  shares  to  Authorized  Firms or  investors  and  other  selling
literature and of advertising  is borne by the Principal  Underwriter.  The fees
and expenses of qualifying and registering and  maintaining  qualifications  and
registrations of the Fund and its shares under Federal and state securities laws
is borne by the Fund.  In  addition,  the Fund makes  payments to the  Principal
Underwriter pursuant to its Distribution Plan as described in the Fund's current
Prospectus; the provisions of the plan relating to such payments are included in
the Distribution Agreement.  The Distribution Agreement is renewable annually by
the Trust's Board of Trustees  (including a majority of its Trustees who are not
interested  persons  of the Trust and who have no direct or  indirect  financial
interest in the operation of the Fund's  Distribution  Plan or the  Distribution
Agreement),  may be  terminated on sixty days' notice either by such Trustees or
by vote of a majority of the outstanding voting securities of the Fund or on six
months' notice by the Principal Underwriter and is automatically terminated upon
assignment.  The  Principal  Underwriter  distributes  Fund  shares  on a  "best
efforts"  basis  under which it is required to take and pay for only such shares
as may be sold.

    The Fund has  authorized  Eaton Vance  Distributors,  Inc.  (the  "Principal
Underwriter")  to act as its agent in  repurchasing  shares at the rate of $2.50
for each  repurchase  transaction  handled  by the  Principal  Underwriter.  The
Principal  Underwriter  estimates that the expenses  incurred by it in acting as
repurchase agent for the Fund will exceed the amounts paid therefor by the Fund.

                               DISTRIBUTION PLAN

    The  Distribution  Plan ("the Plan") is described in the  Prospectus  and is
designed to meet the requirements of Rule 12b-1 under the 1940 Act and the sales
charge rule of the National  Association of Securities Dealers,  Inc. (the "NASD
Rule").  The purpose of the Plan is to compensate the Principal  Underwriter for
its  distribution  services  and  facilities  provided to the Fund by paying the
Principal  Underwriter  sales  commissions  and a separate  distribution  fee in
connection with sales of Fund shares.  The following  supplements the discussion
of the Plan contained in the Fund's Prospectus.

    In  calculating  daily  the  amount  of  uncovered   distribution   charges,
distribution  charges will include the aggregate amount of sales commissions and
distribution   fees   theretofore  paid  plus  the  aggregate  amount  of  sales
commissions and distribution fees which the Principal Underwriter is entitled to
be paid under the Plan since its inception. Payments theretofore paid or payable
under the Plan by the Fund to the Principal  Underwriter and contingent deferred
sales charges  theretofore paid or payable to the Principal  Underwriter will be
subtracted from such distribution  charges; if the result of such subtraction is
positive,  a distribution  fee (computed at 1% over the prime rate then reported
in The Wall Street  Journal) will be computed on such amount and added  thereto,
with  the  resulting  sum  constituting  the  amount  of  outstanding  uncovered
distribution  charges  with  respect  to such day.  The  amount  of  outstanding
uncovered  distribution charges of the Principal  Underwriter  calculated on any
day does not constitute a liability recorded on the financial  statements of the
Fund.

    It is anticipated that the Eaton Vance organization will profit by reason of
the  operation  of the Plan  through an increase in the Fund's  assets  (thereby
increasing the advisory fee payable to BMR by the Portfolio) resulting from sale
of Fund  shares and  through  the  amounts  paid to the  Principal  Underwriter,
including  contingent  deferred sales  charges,  pursuant to the Plan. The Eaton
Vance organization may be considered to have realized a profit under the Plan if
at any point in time the aggregate amounts theretofore received by the Principal
Underwriter pursuant to the Plan and from contingent deferred sales charges have
exceeded  the  total  expenses  theretofore  incurred  by such  organization  in
distributing shares of the Fund. Total expenses for this purpose will include an
allocable  portion of the  overhead  costs of such  organization  and its branch
offices,   which  costs  will  include  without   limitation   leasing  expense,
depreciation  of building and equipment,  utilities,  communication  and postage
expense, compensation and benefits of personnel, travel and promotional expense,
stationery  and supplies,  literature  and sales aids,  interest  expense,  data
processing  fees,  consulting and temporary help costs,  insurance,  taxes other
than income taxes, legal and auditing expense and other  miscellaneous  overhead
items.  Overhead is calculated and allocated for such purpose by the Eaton Vance
organization in a manner deemed equitable to the Fund.

    The amount of uncovered distribution charges of the Principal Underwriter at
any particular time depends upon various changing  factors,  including the level
and timing of sales of Fund shares, the nature of such sales (i.e., whether they
result from  exchange  transactions,  reinvestments  or from cash sales  through
Authorized Firms), the level and timing of redemptions of Fund shares upon which
a  contingent  deferred  sales  charge will be imposed,  the level and timing of
redemptions  of Fund shares upon which no contingent  deferred sales charge will
be imposed (including  redemptions involving exchanges of Fund shares for shares
of another  fund in the Eaton Vance  Marathon  Group of Funds which  result in a
reduction of uncovered  distribution  charges),  changes in the level of the net
assets of the Fund, and changes in the interest rate used in the  calculation of
the distribution  fee under the Plan. For the sales commission  payments made by
the Fund and the  outstanding  uncovered  distribution  charges of the Principal
Underwriter,  see "Fees and Expenses -- Distribution  Plan" in this Part II. The
Plan also  authorizes  the Fund to make payments of service fees. For additional
information  concerning the service fees, see "Fees and Expenses -- Distribution
Plan" in this Part II.

    Under the Plan the President or a Vice  President of the Trust shall provide
to the  Trustees  for  their  review,  and the  Trustees  shall  review at least
quarterly,  a  written  report  of the  amount  expended  under the Plan and the
purposes for which such  expenditures  were made. The Plan may not be amended to
increase  materially  the payments  described  therein  without  approval of the
shareholders  of the Fund, and all material  amendments of the Plan must also be
approved by the  Trustees  as required by Rule 12b-1.  So long as the Plan is in
effect,  the selection and nomination of Trustees who are not interested persons
of the Trust shall be  committed to the  discretion  of the Trustees who are not
such interested persons.

    The Trustees of the Trust believe that the Plan will be a significant factor
in the  expected  growth of the  Fund's  assets,  and will  result in  increased
investment  flexibility  and  advantages  which  will  benefit  the Fund and its
shareholders.  Payments for sales  commissions and distribution fees made to the
Principal  Underwriter under the Plan will compensate the Principal  Underwriter
for its services and expenses in  distributing  shares of the Fund.  Service fee
payments made to the Principal  Underwriter and Authorized  Firms under the Plan
provide incentives to provide continuing  personal services to investors and the
maintenance of shareholder  accounts.  By providing  incentives to the Principal
Underwriter  and  Authorized  Firms,  the  Plan is  expected  to  result  in the
maintenance of, and possible future growth in, the assets of the Fund.  Based on
the  foregoing  and other  relevant  factors,  the  Trustees  of the Trust  have
determined that in their judgment there is a reasonable likelihood that the Plan
will benefit the Fund and its shareholders.

                            PERFORMANCE INFORMATION
    The  tables  below   indicate  the  total  return   (capital   changes  plus
reinvestment of all distributions) on a hypothetical investment of $1,000 in the
Fund covering the life of the Fund from August 22, 1994 to December 31, 1994.

                          VALUE OF A $1,000 INVESTMENT
<TABLE>
<CAPTION>
                                        Value of Invest-     Value of Invest-          Total Return              Total Return after
                                        ment before de-     ment after deduct-      before deducting the           deducting the
                                       ducting the con-     ing the contingent       contingent deferred        contingent deferred
                                       tingent deferred      deferred sales            sales charge                sales charge<F2>
Investment  Investment    Amount of    sales charge on          charge<F2>      ------------------------     -----------------------
  Period      Date       Investment      12/31/94             on 12/31/94       Cumulative    Annualized     Cumulative   Annualized
- ------------------------------------------------------------------------------------------------------------------------------------
<S>          <C>         <C>             <C>                    <C>             <C>           <C>            <C>          <C>
Life of the
Fund<F1>     8/22/94       $1,000        $981.00<F3>            $931.95<F3>     -1.90%<F3>         --        -6.80%<F3>       --

<CAPTION>
                                          PERCENTAGE CHANGES 8/22/94 -- 12/31/94

                       Net asset value to net asset value                     Net asset value to net asset value
                    before deducting the contingent deferred                after deducting the contingent deferred
                sales charge with all distributions reinvested           sales charge<F2> with all distributions reinvested
                ----------------------------------------------           --------------------------------------------------
Period Ended   Annual       Cumulative     Average Annual                Annual          Cumulative           Average Annual
- ------------   ------       ----------     --------------                ------          ----------           --------------
12/31/94<F1>       --       -1.90%<F3>           --                        --            -6.80%<F3>                     --

    Past performance is not indicative of future results.  Investment return and principal value will fluctuate; shares, when
 redeemed, may be worth more or less than their original cost.

<FN>
<F1> Investment operations began on August 22, 1994.
<F2>No  contingent  deferred  sales  charge is imposed on shares  purchased  more than six years prior to the  redemption,  shares
    acquired through the reinvestment of distributions,  or any appreciation in value of other shares in the account,  and no such
    charge is imposed on exchanges  of Fund shares for shares of one or more other funds  listed  under "The Eaton Vance  Exchange
    Privilege" in the Prospectus.
<F3> If a portion of the Fund's expenses had not been subsidized, the Fund would have had lower returns.

</TABLE>


                             ADDITIONAL TAX MATTERS
    The Fund qualified as a regulated  investment company under the Code for its
fiscal year ended December 31, 1994 (see the Notes to Financial Statements).

              CONTROL PERSONS AND PRINCIPAL HOLDERS OF SECURITIES As of February
    28, 1995, the Trustees and officers of the Trust, as a group,
owned in the aggregate less than 1% of the outstanding shares of the Fund. As of
February 28, 1995, Merrill Lynch,  Pierce,  Fenner & Smith, Inc., New Brunswick,
NJ was the record owner of approximately 21.8% of the outstanding shares,  which
were held on  behalf  of its  customers  who are the  beneficial  owners of such
shares, and as to which it had voting power under certain limited circumstances.
In  addition,  as  of  February  28,  1995,  the  following  shareholders  owned
beneficially  and of record the  percentages of  outstanding  shares of the Fund
indicated  after their names:  Ralph Buddy Blair,  Jr., Fort Smith,  AR (11.8%);
Nancy Marks,  Boca Raton,  FL (6.9%);  Themy Chakeris and Nena Chakeris  JTWROS,
Charleston,  SC (6.1%);  and Thomas J. Clark,  Omaha, NE (5.7%).  To the Trust's
knowledge,  no other  person owned of record or  beneficially  5% or more of the
Fund's outstanding shares on such date.

<PAGE>

- ------------------------------------------------------------------------------
                      EV MARATHON SPECIAL EQUITIES FUND
                             FINANCIAL STATEMENTS
                     STATEMENT OF ASSETS AND LIABILITIES
- ------------------------------------------------------------------------------
                              December 31, 1994
- ------------------------------------------------------------------------------
ASSETS:
  Investment in Special Investment Portfolio (Portfolio),
   at value (Note 1A)                                               $558,119
  Receivable for Fund shares sold                                     57,137
  Deferred organization expenses (Note 1D)                            35,223
  Receivable from Administrator (Note 6)                               4,325
                                                                    --------
      Total assets                                                   654,804
LIABILITIES:
  Accrued organization expenses                            $31,095
  Accrued expenses                                           1,139
                                                           -------
      Total liabilities                                               32,234
                                                                    --------
NET ASSETS for 63,443 shares of beneficial interest outstanding     $622,570
                                                                    --------
                                                                    --------
SOURCES OF NET ASSETS:
  Proceeds  from  sales of  shares  (including  shares  issued  to  shareholders
   electing to receive payment of distributions in shares), less cost of shares
   redeemed                                                         $613,954
  Unrealized appreciation of investments                               9,138
  Accumulated net realized loss on investments                          (522)
                                                                    --------
      Total net assets                                              $622,570
                                                                    --------
                                                                    --------
NET ASSET VALUE, OFFERING AND REDEMPTION PRICE PER SHARE
  ($622,570 / 63,443 shares of beneficial interest)                   $9.81
                                                                      ----
                                                                      ----

The accompanying notes are an integral part of the financial statements
<PAGE>
FINANCIAL STATEMENTS (Continued)

                           STATEMENT OF OPERATIONS
- -------------------------------------------------------------------------------
 For the period from the start of business August 22, 1994 to December 31, 1994
- -------------------------------------------------------------------------------

INVESTMENT INCOME (NOTE 1B):
  Dividend income allocated from Portfolio                            $   371
  Interest income allocated from Portfolio                                329
  Expenses allocated from Portfolio                                      (486)
                                                                      -------
        Total investment income                                           214
  Expenses --
    Distribution fees (Note 4)                              $   486
    Custodian fees                                              249
    Registration fees                                           600
    Transfer and dividend disbursing agent fees                 599
    Amortization of organization expenses (Note 1D)           2,772
    Miscellaneous                                             1,328
                                                            -------
        Total expenses                                        6,034
  Deduct --
    Allocation of expenses by the Administrator (Note 6)      4,325
                                                            -------
      Net expenses                                                      1,709
                                                                      -------
          Net investment loss                                          (1,495)
REALIZED AND UNREALIZED GAIN (LOSS) FROM PORTFOLIO:

  Net realized loss on investments (identified cost basis)     (949)
  Change in unrealized appreciation of investments            9,138
                                                            -------
        Net realized and unrealized gain on investments                 8,189
                                                                      -------
          Net increase in net assets resulting from operations        $ 6,694
                                                                      -------
                                                                      -------

The accompanying notes are an integral part of the financial statements
<PAGE>

                      STATEMENT OF CHANGES IN NET ASSETS
- -------------------------------------------------------------------------------
 For the period from the start of business August 22, 1994 to December 31, 1994
- -------------------------------------------------------------------------------
INCREASE (DECREASE) IN NET ASSETS:
  From operations --
    Net investment loss                                              $ (1,495)
    Net realized loss from Portfolio                                     (949)
    Unrealized appreciation from Portfolio                              9,138
                                                                     --------
      Net increase in net assets resulting from operations              6,694
  Net increase in net assets from Fund share transactions (Note 2)    615,876
                                                                     --------
      Net increase in net assets                                      622,570
NET ASSETS:
  Beginning of period                                                    --
                                                                     --------
  End of period (including undistributed net
    investment loss of $522)                                         $622,570
                                                                     --------
                                                                     --------

The accompanying notes are an integral part of the financial statements
<PAGE>
FINANCIAL STATEMENTS (Continued)

                             FINANCIAL HIGHLIGHTS
- ------------------------------------------------------------------------------
For the period from the start of business August 22, 1994 to December 31, 1994
- ------------------------------------------------------------------------------
FINANCIAL HIGHLIGHTS (for a share outstanding throughout the period):
NET ASSET VALUE -- Beginning of period                                $10.000
                                                                      -------
  Income from investment operations:
    Net investment loss                                               $(0.021)
    Net realized and unrealized gain on investments                    (0.169)
                                                                      -------
      Total loss from investment operations                           $(0.190)
                                                                      -------
NET ASSET VALUE -- End of period                                      $ 9.810
                                                                      -------
                                                                      -------
TOTAL RETURN                                                           (1.90)%
RATIOS/SUPPLEMENTAL DATA: (to average daily net assets)**
  Expenses*                                                             3.05% +
  Net investment income                                                (2.00%)+
NET ASSETS AT END OF PERIOD (000'S OMITTED)                           $   623

+ Computed on an annualized basis.
*Includes the Fund's share of Special Investment  Portfolio's allocated expenses
  for the period from August 22, 1994 to December 31, 1994.
**The expenses  related to the  operation of the Fund reflect an  assumption  of
  expenses by the  administrator.  Had such  action not been  taken,  the ratios
  would have been as follows:

    Ratios (to average daily net assets)
      Expenses                                                          9.55% +
      Net investment (loss)                                            (8.50%)+


The accompanying notes are an integral part of the financial statements

<PAGE>

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

                         NOTES TO FINANCIAL STATEMENTS

- ------------------------------------------------------------------------------
(1) SIGNIFICANT ACCOUNTING POLICIES
EV Marathon Special  Equities Fund (the Fund) a Massachusetts  business trust is
registered  under  the  Investment  Company  Act  of  1940,  as  amended,  as  a
diversified open-end management  investment company. The Fund is a series in the
Eaton Vance Special  Investment  Trust.  The Fund invests all of its  investable
assets in interests in the Special Investment  Portfolio (the Portfolio),  a New
York Trust,  having the same investment  objective as the Fund. The value of the
Fund's investment in the Portfolio reflects the Fund's proportionate interest in
the net assets of the Portfolio (0.9% at December 31, 1994).  The performance of
the Fund is directly affected by the performance of the Portfolio. The financial
statements  of the  Portfolio,  including  the  portfolio  of  investments,  are
included  elsewhere  in this report and should be read in  conjunction  with the
Fund's  financial  statements.   The  following  is  a  summary  of  significant
accounting policies  consistently followed by the Fund in the preparation of its
financial  statements.  The policies are in conformity  with generally  accepted
accounting principles.

A.  INVESTMENT  VALUATIONS  --  Valuations  of  securities  by the  Portfolio is
discussed in Note 1 of the Portfolio's  Notes to Financial  Statements which are
included elsewhere in this report.

B. INCOME -- The Fund's net  investment  income  consists of the Fund's pro rata
share of the net investment income of the Portfolio, less all actual and accrued
expenses of the Fund.

C. FEDERAL  TAXES -- The Fund's  policy is to comply with the  provisions of the
Internal  Revenue Code  applicable  to  regulated  investment  companies  and to
distribute to shareholders  each year all of its taxable  income,  including any
net realized gain on  investments,  option and financial  futures  transactions.
Accordingly, no provision for federal income or excise tax is necessary.

D. DEFERRED  ORGANIZATION  EXPENSES -- Costs  incurred by the Fund in connection
with its organization are being amortized on the  straight-line  basis over five
years.

E. OTHER -- Investment transactions are accounted for on the date the
investments are purchased or sold. Distributions to shareholders are recorded on
the ex-dividend date.

F. DISTRIBUTION COSTS -- For book purposes, commissions paid on the sale of Fund
shares and other distribution costs are charged to operations. For tax purposes,
commissions  paid were charged to paid-in capital prior to November 16, 1994 and
subsequently  charged to operations.  The change in the tax accounting  practice
was prompted by a recent  Internal  Revenue  Service ruling and has no effect on
either the Fund's current yield or total return (Note 4).



<PAGE>
NOTES TO FINANCIAL STATEMENTS (Continued)

- --------------------------------------------------------------------------------
(2) SHARES OF BENEFICIAL INTEREST
The  Declaration  of Trust permits the Trustees to issue an unlimited  number of
full  and  fractional  shares  of  beneficial   interest  (without  par  value).
Transactions  in Fund  shares  from the start of  business,  August 22,  1994 to
December 31, 1994 were as follows:

                                                          SHARES    AMOUNT
                                                          ------    -------
Sales                                                     64,218   $623,694
Issued to shareholders electing to receive payment of
  distribution in Fund shares                               --         --
Redemptions                                                 (775)    (7,818)
                                                          ------   --------
    Net increase                                          63,443   $615,876
                                                          ------   --------
                                                          ------   --------
- --------------------------------------------------------------------------------
(3) INVESTMENT TRANSACTIONS
Increases  and decreases in the Fund's  investment  in the Portfolio  aggregated
$566,567 and $16,841, respectively.
- --------------------------------------------------------------------------------
(4) DISTRIBUTION PLAN
The Fund has adopted a distribution plan (the Plan) pursuant to Rule 12b-1 under
the Investment Company Act of 1940. The Plan requires the Fund to accrue amounts
daily to the principal underwriter, Eaton Vance Distributors,  Inc. (EVD), equal
to  1/365th of 0.75% of the  Fund's  average  daily net  assets,  for  providing
ongoing  distribution  services  and  facilities  to the  Fund.  The  Fund  will
automatically  discontinue  accruals to EVD during any period in which there are
no  outstanding  Uncovered   Distribution   Charges,   which  are  approximately
equivalent to the sum of (i) 5% of the aggregate amount received by the Fund for
shares sold plus (ii)  distribution  fees  calculated by applying the rate of 1%
over  the  prevailing  prime  rate  to  the  outstanding  balance  of  Uncovered
Distribution  Charges of EVD,  reduced  by the  aggregate  amount of  contingent
deferred sales charges (see Note 5) and amounts theretofore paid to EVD.

  The amount payable to EVD with respect to each day is accrued on such day as a
liability  of the Fund and,  accordingly,  reduces the Fund's net  assets.  Such
payments would cease upon termination of the distribution agreement (unless made
in accordance with another distribution  agreement).  As a result, the Fund does
not accrue  amounts  which may become  payable to EVD in the future  because the
conditions  for recording any  contingent  liability  under  generally  accepted
accounting  principles have not been  satisfied.  EVD earned $486 for the period
from the start of business,  August 22, 1994 to December 31, 1994,  representing
0.75% (annualized) of average daily net assets. At December 31, 1994, the amount
of  Uncovered  Distribution  Charges  of  EVD  calculated  under  the  Plan  was
approximately $21,676.

  In addition,  the Plan authorizes the Fund to make payments of service fees to
the  Principal  Underwriter,  Authorized  Firms and other persons in amounts not
exceeding 0.25% of the Fund's average daily net assets for each fiscal year. The
Trustees have  implemented  the Plan by  authorizing  the Fund to make quarterly
payments of service fees to the Principal  Underwriter  and Authorized  Firms in
amounts not expected to exceed 0.25% of the Fund's  average daily net assets for
each  fiscal  year based on the value of Fund  shares  sold by such  persons and
remaining  outstanding  for at least twelve  months,  and that payments of these
service fees shall commence with the quarter ending September 30, 1995.  Service
fees are separate and distinct from the sales  commissions and distribution fees
payable  by the  Fund  to EVD,  and,  as  such,  are not  subject  to  automatic
discontinuance where there are no outstanding Uncovered  Distribution Charges of
EVD.

    Certain of the  officers of the Fund and  Directors of the  Corporation  are
officers and directors of EVD.
<PAGE>
- --------------------------------------------------------------------------------
(5) CONTINGENT DEFERRED SALES CHARGES
A contingent  deferred  sales charge (CDSC) is imposed on any redemption of Fund
shares made within six years of purchase.  Generally, the CDSC is based upon the
lower of the net  asset  value at date of  redemption  or date of  purchase.  No
charge is levied on shares acquired by reinvestment of dividends or capital gain
distributions.  The CDSC is imposed at  declining  rates that begin at 5% in the
first and second year or redemption  after  purchase,  declining one  percentage
point each year.  No CDSC is levied on shares which have been sold to EVM or its
affiliates or to their respective employees or clients. CDSC charges are paid to
EVD to reduce the amount of Uncovered  Distribution Charges calculated under the
Fund's  Distribution Plan. CDSC charges received when no Uncovered  Distribution
Charges exist will be retained by the Fund.  EVD received  approximately  $62 of
CDSC paid by shareholders for the period from the start of business,  August 22,
1994 to December 31, 1994.

- --------------------------------------------------------------------------------
(6) ADMINISTRATOR
The administrator assumed $4,325 of the Funds expenses in the period from August
22, 1994, to December 31, 1994.  Investment  Adviser fee and other  transactions
with  affiliates  is discussed in Note 3 of the  Portfolio's  Notes to Financial
Statements which are included elsewhere in this report.



<PAGE>


                      REPORT OF INDEPENDENT ACCOUNTANTS
- --------------------------------------------------------------------------------
To the Shareholders and Trustees of
EV Marathon  Special  Equities Fund, a series of Eaton Vance Special  Investment
Trust:

We have  audited the  accompanying  statement  of assets and  liabilities  of EV
Marathon  Special  Equities  Fund,  a series of Eaton Vance  Special  Investment
Trust, as of December 31, 1994, the related statements of operations, changes in
net assets and financial  highlights  for the period from August 22, 1994 (start
of business) to December 31, 1994.  These  financial  statements  and  financial
highlights are the responsibility of the Fund's  management.  Our responsibility
is to express an opinion on these financial  statements and financial highlights
based on our audit.

We conducted our audit in accordance with generally accepted auditing standards.
Those standards  require that we plan and perform the audit to obtain reasonable
assurance  about whether the financial  statements and financial  highlights are
free of material  misstatement.  An audit includes  examining,  on a test basis,
evidence supporting the amounts and disclosures in the financial statements. Our
procedures included  confirmation of securities owned as of December 31, 1994 by
correspondence  with  the  custodian.  An  audit  also  includes  assessing  the
accounting principles used and significant estimates made by management, as well
as evaluating the overall financial statement presentation.  We believe that our
audit provides a reasonable basis for our opinion.

In our opinion,  the financial  statements and financial  highlights referred to
above present fairly,  in all material  respects,  the financial  position of EV
Marathon  Special  Equities  Fund,  a series of Eaton Vance  Special  Investment
Trust,  as of December 31, 1994, the results of its  operations,  changes in its
net assets and financial  highlights  for the period from August 22, 1994 (start
of business)  to December  31,  1994,  in  conformity  with  generally  accepted
accounting principles.
                                                        COOPERS & LYBRAND L.L.P.
Boston, Massachusetts
February 3, 1995


<PAGE>

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

                          SPECIAL INVESTMENT PORTFOLIO
                            PORTFOLIO OF INVESTMENTS
                               DECEMBER 31, 1994

- --------------------------------------------------------------------------------
                             COMMON STOCKS - 93.3%
- --------------------------------------------------------------------------------
NAME OF COMPANY                                         SHARES           VALUE
- --------------------------------------------------------------------------------
BUSINESS SERVICES - 6.8%
Accustaff Inc.*                                         20,000       $   277,500
Provider of specialized temporary staffing
  services to major corporations.
BISYS Corp.*                                            40,000           885,000
Services financial institutions with
  computer, administrative and marketing
  support data processing services.
Danka Business Systems PLC, ADR                         20,000           432,500
An independent provider of maintenance and
  service for office copying machines.
FIserv Incorporated*                                   103,500         2,225,250
Provider of data processing services to
  banks and savings institutions, benefiting
  from outsourcing trend.
G&K Services, Inc.                                      35,000           581,875
Rents and launders uniforms and other
  textile products.
                                                                     -----------
                                                                     $ 4,402,125
                                                                     -----------
COMMUNICATIONS - 6.2%
Comcast Corp.                                           55,000       $   862,812
Cable TV and cellular telephone operator.
Comcast UK Cable Partners                               40,000           640,000
Operator of  integrated  cable  television,  residential  telephone and business
  telecommunications services in the United Kingdom.
Intelcom Group, Inc.*                                   17,300           229,030
Provider of alternative access
  telecommunication services and
  international satellite uplink teleports.
MFS Communications Co., Inc*                            45,000         1,473,750
Provider of fiber-optic based
  telecommunications services primarily to
  businesses.
Paging Network, Inc.*                                   10,000           340,000
Provider of paging services in U.S.
Telephone & Data Systems, Inc.                          10,000           461,250
A provider  of  local  telephone  service  in
  smaller  communities,  as well as
  cellular and paging services.
                                                                     -----------
                                                                     $ 4,006,842
                                                                     -----------
<PAGE>
PORTFOLIO OF INVESTMENTS (Continued)

                             COMMON STOCKS - (Continued)
- --------------------------------------------------------------------------------
NAME OF COMPANY                                         SHARES           VALUE
- --------------------------------------------------------------------------------
COMPUTER EQUIPMENT - 2.7%
EMC Corp. Mass.                                         55,000       $ 1,189,375
Manufacturer of data storage products for
   midrange and mainframe computer systems.
Motorola Inc.                                           10,000           578,750
Leading worldwide producer of wireless
  communication systems and equipment,major
  manufacturer of semiconductors.
                                                                     -----------
                                                                     $ 1,768,125
                                                                     -----------
CONSUMER SOFTWARE - 6.4%
Banyan Inc.*                                            70,000       $ 1,251,250
Provider of networking software products for
  large, complex computer networks.
Lotus Development Corp.*                                10,000           411,250
Provider of business application software
  including (1-2-3), graphics (Freelance)
  and communications (Notes) products.
Novell, Inc.*                                           70,000         1,198,750
Leading provider of network software
  systems.
Silicon Graphics, Inc.*                                 40,000         1,235,000
Produces computer systems used for the
  design analysis and simulation of three
  dimensional objects.
                                                                     -----------
                                                                     $ 4,096,250
                                                                     -----------
CONSUMER PRODUCTS - 2.2%
Sunbeam Oster, Inc.                                     55,000       $ 1,416,250
Manufacturer of outdoor, household, and                              -----------
  specialty consumer products under Sunbeam
  and Oster brand names.

ELECTRONICS & INSTRUMENTATION - 7.3%
Cisco Systems, Inc.*                                    35,000       $ 1,229,375
Manufacturer of routers that connect
  computer networks.
Dallas Semiconductor Corp.*                            110,000         1,828,750
Specialty semiconductor supplier focusing on
  CMOS integrated circuits.
Linear Technology Corp.                                 15,000           742,500
Manufacturer of high performance linear
  integrated circuits.
Xilinx Inc.*                                            15,000           888,750
Leading world-wide supplier of CMOS
  programmable logic semiconductors.
                                                                     -----------
                                                                     $ 4,689,375
                                                                     -----------
<PAGE>

                             COMMON STOCKS - (Continued)
- --------------------------------------------------------------------------------
NAME OF COMPANY                                         SHARES           VALUE
- --------------------------------------------------------------------------------
ENTERTAINMENT - 2.5%
Carnival Corp.                                          60,000       $ 1,275,000
World's largest cruise ship company
  operating primarily as Carnival and
  Holland America cruise lines.
Gaylord Entertainment                                   16,000           364,000
Diversified cable entertainment/broadcasting
  company focused in the country music
  industry.
                                                                     -----------
                                                                     $ 1,639,000
                                                                     -----------
ENVIRONMENTAL SERVICES - 0.4%
United Waste Systems, Inc.*                             10,000       $   250,000
Integrated provider of solid waste                                   -----------
  management services to residential,
  commercial and industrial customers.

FINANCE - 7.5%
Federal National Mortgage Association                   30,000       $ 2,186,250
Leading factor in the secondary mortgage
  market.
Franklin Resources, Inc.                                45,000         1,603,125
One of the largest mutual fund organizations
  in the U.S.
T. Rowe Price Associates, Inc.                          35,000         1,050,000
Investment adviser to mutual funds,
  institutions and individuals.
                                                                     -----------
                                                                     $ 4,839,375
                                                                     -----------
HEALTHCARE - 11.9%
Boston Scientific Corp.*                               134,000       $ 2,328,250
Medical device manufacturer focusing
  primarily on disposable products in less
  invasive surgery procedures.
Genesis Health Ventures, Inc.*                          35,000         1,106,875
Provider of geriatric health services.
Horizon Healthcare Corp.*                               25,000           700,000
Manager of  long-term  care and  specialty  healthcare  facilities  focusing  on
  geriatric care.
Mylan Laboratories, Inc.                                75,000         2,025,000
Leading manufacturer of generic drugs.
U.S. Healthcare, Inc.                                   15,000           618,750
Operates health management organization
  serving over 1.5 million members.
Ventritex Inc.*                                         25,500           688,500
Developer of new generation implantable
  heart defibrillator.
Vitalink Pharmacy Services, Inc.*                       12,500           178,125
Provider of pharmacy services to nursing
  homes and sub-acute care medical
  facilities.
                                                                     -----------
                                                                     $ 7,645,500
                                                                     -----------
<PAGE>
PORTFOLIO OF INVESTMENTS (Continued)

                             COMMON STOCKS - (Continued)
- --------------------------------------------------------------------------------
NAME OF COMPANY                                         SHARES           VALUE
- --------------------------------------------------------------------------------
INDUSTRIAL PRODUCTS - 9.8%
J & L Specialty Steel, Inc.                             40,000       $   785,000
Manufacturer of stainless steel.
Loctite Corp.                                           34,400         1,599,600
International manufacturer of adhesives, sealants and related products.
Union Switch & Signal, Inc.*                            45,000           613,125
Manufacturer of advanced signaling, control
  and automatic systems for railroads and
  transit authorities.
Wabash National Corp.                                   85,000         3,315,000
Manufacturer of specialy truck trailers
  benefiting from innovative new products.
                                                                     -----------
                                                                     $ 6,312,725
                                                                     -----------
INSURANCE - 7.1%
American International Group                            10,000       $   980,000
One of the world's leading insurance
  companies, operating in 130 countries.
HCC Insurance Holdings, Inc.*                           47,700         1,001,700
Specialty insurer focusing on complex
  international markets.
Mutual Risk Management Ltd.                             55,000         1,443,750
Specialty insurer focusing on workmen's
  compensation.
UNUM Corp.                                              30,000         1,132,500
Leading provider of long-term disability
  insurance.
                                                                     -----------
                                                                     $ 4,557,950
                                                                     -----------
PUBLISHING -1.2%
Scholastic Corp.*                                       15,000       $   765,000
Publisher/distributor of children's books,                           -----------
  magazines and related educational
  materials.

RESTAURANTS - 5.5%
Bertucci's Holding Corp.*                               95,000       $ 1,045,000
Rapidly growing operator of Italian style
  restaurants featuring wood burning brick
  ovens.
Brinker International, Inc.*                            70,000         1,268,750
Operator of Chili's, Grady's and other
  dinnerhouse restaurants growing through
  new unit expansion.
Buffets Inc.*                                          100,000           987,500
Chain of value-oriented Old Country Buffet
  restaurants growing through new unit
  expansion.
Quality Dining, Inc.*                                   16,900           209,138
Midwestern U.S. franchise operator of Burger
  King and Chili's restaurants.
                                                                     -----------
                                                                     $ 3,510,388
                                                                     -----------
<PAGE>

                             COMMON STOCKS - (Continued)
- --------------------------------------------------------------------------------
NAME OF COMPANY                                         SHARES           VALUE
- --------------------------------------------------------------------------------
RETAILING - 9.3%
Ann Taylor Stores Corp.*                                20,000       $   687,500
Specialty retailer of better quality women's
  apparel, shoes and accessories.
Consolidated Stores Corp.*                              95,000         1,769,375
Chain of close-out merchandise stores
  operating primarily under the Odd/Big Lots
  name.
Gap (The) Inc.                                          25,000           762,500
Specialty apparel retailer offering high-
  quality, modestly priced private-label
  sportswear under six brand names.
Home Depot Inc.                                         35,000         1,610,000
Operator of a chain of retail warehouse-type
  stores selling building supply and home
  improvement products.
Michaels Stores Inc.*                                   30,000         1,042,500
Leading arts and crafts retailer in the U.S.
Sports Authority (The)*                                  6,600           138,600
Largest operator of large-format sporting
  goods stores in the United States.
                                                                     -----------
                                                                     $ 6,010,475
                                                                     -----------
SPECIALTY CHEMICALS - 2.9%
Great Lakes Chemical Corp.                              20,000       $ 1,140,000
Leading producer of flame retardant and
  specialty intermediate chemicals.
Millipore Corp.                                         15,000           725,625
Manufacturer of membrane technology products
  used for chemical analysis and
  purification.
                                                                     -----------
                                                                     $ 1,865,625
                                                                     -----------
TRANSPORTATION - 3.6%
Greenbrier Companies,Inc.                               45,500       $   750,750
Leading manufacturer of intermodal railcars
  used to transport container freight.
M.S. Carriers, Inc.*                                    40,000           870,000
Irregular route truckload carrier.
Werner Enterprises, Inc.                                30,000           708,750
Nationwide truckload transportation carrier.
                                                                     -----------
                                                                     $ 2,329,500
                                                                     -----------
    TOTAL COMMON STOCKS
      IDENTIFIED COST, $49,823,351)                                  $60,104,505
                                                                     -----------
<PAGE>
PORTFOLIO OF INVESTMENTS (Continued)
- --------------------------------------------------------------------------------
                             PREFERRED STOCK - 0.1%
- --------------------------------------------------------------------------------
NAME OF COMPANY                                        SHARES       VALUE
- --------------------------------------------------------------------------------
Concentric Data Systems, Inc.
1983 Class B Pfd.+
Software company providing data management
  programs for microcomputers.                          43,750      $     87,500
                                                                    ------------

    TOTAL PREFERRED STOCK
      (IDENTIFIED COST, $175,000)                                   $     87,500
                                                                    ------------

- --------------------------------------------------------------------------------
                         SHORT-TERM OBLIGATIONS - 6.9%
- --------------------------------------------------------------------------------
                                                        PRINCIPAL
                                                        AMOUNT
                                                        (000
                                                        OMITTED)
- --------------------------------------------------------------------------------
CXC Inc., 5.95s, 1/3/95                                 $2,958      $ 2,956,842
General Electric Capital Corp., 5.82s, 1/9/95            1,485        1,483,080
                                                                    -----------
    TOTAL SHORT-TERM OBLIGATIONS, AT
      AMORTIZED COST                                                $ 4,439,922
                                                                    -----------
    TOTAL INVESTMENTS (IDENTIFIED COST,
       $54,438,273)                                                 $64,631,927
    OTHER ASSETS, LESS LIABILITIES - (0.3%)                         $  (189,555)
                                                                    -----------
    TOTAL NET ASSETS - 100%                                         $64,442,372
                                                                    ===========

*Non-income producing security.
+Not readily marketable security.

   The accompanying notes are an integral part of the financial statements






<PAGE>


                              FINANCIAL STATEMENTS
                      STATEMENT OF ASSETS AND LIABILITIES
- --------------------------------------------------------------------------------
                               December 31, 1994
- --------------------------------------------------------------------------------
ASSETS:
  Investments, at value (Note 1A) (identified cost,
     $54,438,273)                                                $64,631,927
  Cash                                                                 1,875
  Dividends receivable                                                28,262
  Deferred organization expenses (Note 1D)                            14,476
                                                                 -----------
      Total assets                                               $64,676,540

LIABILITIES:
  Payable for investments purchased                    $229,889
  Custodian fee payable                                   1,929
  Accrued expenses                                        2,350
                                                       --------
      Total liabilities                                              234,168
                                                                 -----------
NET ASSETS applicable to investors' interest
 in Portfolio                                                    $64,442,372
                                                                 ===========
SOURCES OF NET ASSETS:
  Net proceeds from capital contributions and withdrawals        $54,248,718
  Unrealized appreciation of investments (identified
    cost)                                                         10,193,654
                                                                 -----------
      Total net assets                                           $64,442,372
                                                                 ===========

   The accompanying notes are an integral part of the financial statements




<PAGE>
FINANCIAL STATEMENTS (Continued)

                            STATEMENT OF OPERATIONS
- --------------------------------------------------------------------------------
                   For the period from the start of business,
                      August 1, 1994, to December 31, 1994
- --------------------------------------------------------------------------------
INVESTMENT INCOME:
  Dividend income                                                  $  130,332
  Interest income                                                     133,617
                                                                   ----------
    Total income                                                      263,949

  Expenses --
    Investment adviser fee (Note 3)                   $  175,012
    Custodian fee (Note 3)                                20,710
    Legal and accounting                                   8,231
    Registration fees                                      2,642
    Amortization of organization expenses (Note 1D)        1,196
    Printing                                                 173
    Miscellaneous                                            348
                                                      ----------
        Total expenses                                                208,312
                                                                   ----------
          Net investment income                                        55,637

REALIZED AND UNREALIZED GAIN (LOSS) ON INVESTMENTS:
  Net realized loss on investments (identified cost
     basis)                                           $ (986,284)
  Change in unrealized appreciation on investments     4,288,639
                                                      ----------
        Net realized and unrealized gain on
          investments                                               3,302,355
                                                                   ----------
          Net increase in net assets resulting from operations     $3,357,992
                                                                   ==========

   The accompanying notes are an integral part of the financial statements






<PAGE>


                       STATEMENT OF CHANGES IN NET ASSETS
- --------------------------------------------------------------------------------
                   For the period from the start of business,
                      August 1, 1994, to December 31, 1994
- --------------------------------------------------------------------------------
INCREASE (DECREASE) IN NET ASSETS:
  From operations --
    Net investment income                                        $     55,637
    Net realized loss on investment transactions                     (986,284)
    Increase in unrealized appreciation of investments              4,288,639
                                                                 ------------
      Net increase in net assets from operations                 $  3,357,992
                                                                 ------------
  Capital transactions--
    Contributions                                                $104,495,403
    Withdrawals                                                   (43,411,023)
                                                                 ------------
    Increase in net assets resulting from capital transactions   $ 61,084,380
                                                                 ------------
      Total increase in net assets                               $ 64,442,372

NET ASSETS:
  At beginning of period                                              --
                                                                 ------------
  At end of period                                               $ 64,442,372
                                                                 ============


- --------------------------------------------------------------------------------
                               SUPPLEMENTARY DATA
- --------------------------------------------------------------------------------
RATIOS (As a percentage of average net assets):
  Expenses                                                       0.74%+
  Net investment income                                          0.20%+

PORTFOLIO TURNOVER                                               19%


+Computed on an annualized basis.
   The accompanying notes are an integral part of the financial statements



<PAGE>

(1) SIGNIFICANT ACCOUNTING POLICIES
Special Investment  Portfolio (the Portfolio) is registered under the Investment
Company  Act of 1940 as a  diversified  open-end  investment  company  which was
organized as a trust under the laws of the State of New York on May 1, 1992. The
Declaration of Trust permits the Trustees to issue  beneficial  interests in the
Portfolio.  Investment  operations began on August 1, 1994, with the acquisition
of net assets of $69,001,817 in exchange for an interest in the Portfolio by one
of  the  Portfolio's  investors.  The  following  is a  summary  of  significant
accounting  policies of the  Portfolio.  The  policies  are in  conformity  with
generally accepted accounting principles.

A.  SECURITY  VALUATIONS  --  Investments  in  securities  traded on a  national
securities  exchange or in the NASDAQ National Market are valued on the basis of
the last  reported  sales prices on the last  business day of the period.  If no
sale is reported on that date, a security is valued, if quoted on such a day, at
not lower than the old bid price nor  higher  than the asked  prices.  Prices on
such exchanges  will not be used for valuing debt  securities if in the Trustees
judgment,  some other valuation method more accurately  reflects the fair market
value  of  such  a  security.   Securities  for  which  over-the-counter  market
quotations are readily available are valued on the basis of the mean between the
last bid and asked  prices.  Short-term  securities  are  valued at cost,  which
approximates  market  value.  All other  securities  and assets are appraised to
reflect their fair value as determined in good faith by the Trustees.

B. INCOME  TAXES -- The  Portfolio is treated as a  partnership  for federal tax
purposes.  No provision is made by the  Portfolio  for federal or state taxes on
any taxable  income of the  Portfolio  because each investor in the Portfolio is
ultimately  responsible  for  the  payment  of  any  taxes.  Since  some  of the
Portfolio's  investors are  regulated  investment  companies  that invest all or
substantially all of their assets in the Portfolio,  the Portfolio normally must
satisfy the applicable source of income and diversification  requirements (under
the Code) in order  for its  investors  to  satisfy  them.  The  Portfolio  will
allocate at least  annually  among its investors  each  investors'  distributive
share of the Portfolio's net investment  income, net realized capital gains, and
any other items of income, gain, loss, deduction or credit.

C.  OTHER  --  Investment  transactions  are  accounted  for  on  the  date  the
investments  are  purchased  or sold.  Dividend  income is  recorded  on the ex-
dividend  date.  Realized  gains  and  losses  on the  sale of  investments  are
determined on the identified cost basis.

D.  DEFERRED  ORGANIZATION  EXPENSES  --  Costs  incurred  by the  Portfolio  in
connection with its organization are being amortized on the straight-line  basis
over five years.
- --------------------------------------------------------------------------------

(2)  INVESTMENT  TRANSACTIONS
Purchases  and  sales  of  investments,   other  than  short-term   obligations,
aggregrated $11,947,002 and $14,500,376, respectively.
- --------------------------------------------------------------------------------

(3) INVESTMENT ADVISER FEE AND OTHER TRANSACTIONS WITH AFFILIATES The investment
adviser fee is earned by Boston  Management  and Research  (BMR), a wholly-owned
subsidiary of Eaton Vance  Management  (EVM), as compensation for management and
investment advisory services rendered to the Portfolio. The fee is at the annual
rate of 5/8 of 1% of average daily net assets.  For the period from the start of
business,  August 1, 1994 to December  31,  1994,  the fee amounted to $175,012.
Except as to  Trustees  of the  Portfolio  who are not members of EVM's or BMR's
organization,  officers and Trustees receive  remuneration for their services to
the Portfolio out of such investment adviser fee. Investors Bank & Trust Company
(IBT),  an  affiliate  of EVM and BMR,  serves as  custodian  of the  Portfolio.
Pursuant to the custodian agreement, IBT receives a fee reduced by credits which
are determined based on the average daily cash balances the Portfolio  maintains
with IBT. Certain of the officers and Trustees of the Portfolio are officers and
directors/trustees of the above organizations.
- --------------------------------------------------------------------------------

(4) LINE OF CREDIT
The Portfolio  participates  with other  portfolios and funds managed by BMR and
EVM and its affiliates in a $120 million unsecured line of credit agreement with
a bank. The line of credit consists of $20 million committed facility and a $100
million discretionary facility.  Borrowings will be made by the Portfolio solely
to  facilitate  the handling of unusual  and/or  unanticipated  short-term  cash
requirements.  Interest is charged to each portfolio  based on its borrowings at
an amount  above  either the bank's  adjusted  certificate  of deposit  rate,  a
variable  adjusted  certificate  of deposit rate,  or a federal funds  effective
rate.  In  addition,  a fee  computed  at an annual rate of 1/4 of 1% on the $20
million  committed  facility and on the daily unused portion of the $100 million
discretionary facility is allocated among the participating funds and portfolios
at the  end of  each  quarter.  The  Portfolio  did  not  have  any  significant
borrowings or allocated  fees during the period.  At December 31, 1994, the Fund
did not have an outstanding balance pursuant to the line of credit.
- --------------------------------------------------------------------------------

(5)  FEDERAL   INCOME  TAX  BASIS  OF   INVESTMENTS
The cost and unrealized  appreciation/depreciation  in value of the  investments
owned at December 31, 1994,  as computed on a federal  income tax basis,  are as
follows:
Aggregate cost                                                       $54,436,173
                                                                     ===========
Gross unrealized appreciation                                        $12,351,693
Gross unrealized  depreciation                                         2,158,039
                                                                     -----------
Net unrealized  appreciation                                         $10,193,654
                                                                     ===========




<PAGE>

                       REPORT OF INDEPENDENT ACCOUNTANTS
- --------------------------------------------------------------------------------
To the Trustees and Investors of
Special Investment Portfolio:

We have audited the accompanying  statement of assets and liabilities of Special
Investment Portfolio, including the portfolio of investments, as of December 31,
1994,  the  related   statement  of  operations,   changes  in  net  assets  and
supplementary  data for the period from August 1, 1994  (start of  business)  to
December 31, 1994.  These financial  statements and  supplementary  data are the
responsibility of the Portfolio's  management.  Our responsibility is to express
an opinion on these  financial  statements and  supplementary  data based on our
audit.

We conducted our audit in accordance with generally accepted auditing standards.
Those standards  require that we plan and perform the audit to obtain reasonable
assurance about whether the financial statements and supplementary data are free
of material misstatement. An audit includes examining, on a test basis, evidence
supporting  the  amounts  and  disclosures  in  the  financial  statements.  Our
procedures included  confirmation of securities owned as of December 31, 1994 by
correspondence  with the custodian and brokers. An audit also includes assessing
the accounting principles used and significant estimates made by management,  as
well as evaluating the overall financial statement presentation. We believe that
our audit provides a reasonable basis for our opinion.

In our opinion,  the financial  statements  and  supplementary  data referred to
above  present  fairly,  in all material  respects,  the  financial  position of
Special  Investment  Portfolio  as of  December  31,  1994,  the  results of its
operations, changes in its net assets and supplementary data for the period from
August 1, 1994 (start of  business) to December 31,  1994,  in  conformity  with
generally accepted accounting principles.


                                                        COOPERS & LYBRAND L.L.P.
Boston, Massachusetts
February 3, 1995





<PAGE>
INVESTMENT ADVISER OF
SPECIAL INVESTMENT PORTFOLIO
Boston Management and Research
24 Federal Street
Boston, MA 02110

ADMINISTRATOR OF
EV MARATHON SPECIAL EQUITIES FUND
Eaton Vance Management
24 Federal Street
Boston, MA 02110

PRINCIPAL UNDERWRITER
Eaton Vance Distributors, Inc.
24 Federal Street
Boston, MA 02110
(800) 225-6265

CUSTODIAN
Investors Bank & Trust Company
24 Federal Street
Boston, MA 02110

TRANSFER AGENT
The Shareholder Services Group, Inc.
BOS725
P.O. Box 1559
Boston, MA 02104
(800) 262-1122

INDEPENDENT ACCOUNTANTS
Coopers & Lybrand L.L.P.
One Post Office Square
Boston, MA  02109

EV MARATHON SPECIAL EQUITIES FUND
24 FEDERAL STREET
BOSTON, MA 02110

M-SESAI

[Logo]
EV MARATHON
SPECIAL EQUITIES
FUND

STATEMENT OF ADDITIONAL INFORMATION
APRIL 1, 1995



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