EATON VANCE SPECIAL INVESTMENT TRUST
N-30D, 1997-02-28
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<PAGE>

INVESTMENT ADVISER OF 
INVESTORS PORTFOLIO
Boston Management and Research
24 Federal Street
Boston, MA 02110

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

UNDERWRITER
Eaton Vance Distributors, Inc.
24 Federal Street
Boston, MA 02110
(617) 482-8260

CUSTODIAN
Investors Bank & Trust Company
89 South Street
P.O. Box 1537
Boston, MA 02205-1537

TRANSFER AND DIVIDEND 
DISBURSING AGENT
First Data Investor Services Group, Inc.
P.O. Box 5123
Westborough, MA 01581-5123

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

This report must be preceded or accompanied by a current prospectus which
contains more complete information on the Fund, including its distribution plan,
sales charges and expenses. Please read the prospectus carefully before you
invest or send money.


EV MARATHON INVESTORS FUND
24 FEDERAL STREET
BOSTON, MA 02110


M-IFSRC-1/97

[Logo]

EV MARATHON
INVESTORS
FUND


ANNUAL 
SHAREHOLDER REPORT
DECEMBER 31, 1996

[GRAPHIC OMITTED]
<PAGE>
To Shareholders

During the year ended December 31, 1996, EV Marathon Investors Fund had a total
return of 12.6%. That return, which did not include the 5% maximum contingent
deferred sales charge (CDSC), reflected an increase in net asset value to $12.34
per share from $11.70 per share and the reinvestment of income dividends of
$0.260 per share and capital gain distributions of $0.54 per share. By
comparison, the Lipper Balanced Fund Category,* a composite of 277 balanced
mutual funds, had an average total return of 13.6%.

The U.S. economy in 1996 experienced a year of growth, low inflation, and rising
employment -- an advantageous mix of economic circumstances which helped produce
another good year for stock market investors. For the year, economic growth, as
measured by the Commerce Departments report of Gross Domestic Product (GDP), was
3.4%, while inflation, as measured by the Consumer Price Index (CPI), was 3.3%
(not sea-sonally adjusted). The U.S. civilian unemployment rate stood at a low
level of 5.3% in December.

The stock market continued into May, 1996, the bullish advance which began in
1995, but then corrected sharply in July. Technology stocks were hit
particularly hard. The market recovered in August, but advanced thereafter on a
more selective basis. With the market reaching record highs, investors sought
comfort in high-quality, blue chip stocks. The S&P 500,* a broadly based blue
chip stock barometer, dropped by roughly 10% in July, but rallied to record
highs through the second half of the year and finished the year with a total
return of 22.9%.

In contrast to the stock market, the bond market did not fare as well in 1996.
The yield on the 30-year Treasury bond, a bellwether of bond market activity,
rose to 6.64% by December 31, 1996 from 6.02% at the beginning of the year. The
Lehman Brothers Government/Corporate Bond Index* -- an unmanaged index of
government and corporate bonds -- had a total return of only 2.9% for the year.

Although a weak bond market damped the 1996 performance of balanced funds --
which generally invest in both stocks and bonds -- history has demonstrated that
diversification among asset classes can reduce volatility while producing
rewarding long-term returns. Of course, past performance is no guarantee of
future results.

Sincerely,

[Photo of M. Dozier Gardner]

/s/ M. Dozier Gardner 
    M. Dozier Gardner 
    President 
    February 7, 1997

*It is not possible to invest directly in an index or a Lipper Category.

                           EV MARATHON INVESTORS FUND
                Investors Portfolios 10 largest stock holdings*
Chase Manhattan.................................. Banking
Sofomor/Danek.................................... Healthcare
Boston Scientific................................ Healthcare
Progressive...................................... Insurance
Boeing........................................... Aerospace/Defense
Intel............................................ Semiconductors
Eastman Kodak.................................... Photography
Allstate......................................... Insurance
Federal Natl Mortgage Assn....................... Financial
Astra AB......................................... Healthcare
*By market value as of 12/31/96. Holdings may change due to active management.


Fund shares are not guaranteed by the FDIC and are not deposits or other
obligations of, or guaranteed by, any depository institution. Shares are subject
to investment risks, including possible loss of principal invested.

<PAGE>

MANAGEMENT REPORT


An interview with Thomas E. Faust Jr., Vice President and Portfolio Manager of
Investors Portfolio.

Q. HOW WOULD YOU SUMMARIZE THE 1996 STOCK AND BOND MARKETS?

A. In the first five months of the year, almost all types of stocks rose in
   value, including small, unseasoned issues and initial public offerings
   (IPOs). This was a classic bull market in which a "rising tide lifts all
   boats." The overall market corrected in July, and the less established
   companies and IPOs were hit particularly hard. When stock prices recovered
   through the late summer and fall, there was a dramatic shift in leadership
   from smaller capitalization companies to large capitalization, blue chip
   firms. This two-tiered market, in which a relatively small number of large
   capitalization stocks accounted for most of the positive performance of the
   S&P 500, characterized the second half of 1996. In this environment, actively
   managed funds generally had difficulty beating the major indexes, which are
   dominated by the largest capitalization stocks. To illustrate, the 19.2%
   average total return of mutual funds in the Lipper Growth Funds category
   significantly underperformed the 22.9% return of the S&P 500 Index and the
   28.8% return of the Dow Jones Industrial Average in 1996.

   Unlike the stock market, the bond market did not perform very well in 1996.
   Many analysts expected that the economy would continue the slow pace set in
   1995. As it turned out, the economy's growth exceeded most forecasts. This
   disappointed bond investors because significant increases in economic growth
   tend to build concerns about inflation.

[Photo of Thomas E. Faust, Jr.]

Q. THERE HAS BEEN MUCH TALK ABOUT HIGH LEVELS OF CONSUMER DEBT HAVING A NEGATIVE
   EFFECT ON THE ECONOMY. DO YOU AGREE?

A. In fact, we have seen some new interpretations of consumer debt. The argument
   has been that consumers are "tapped out" and will have to slow spending
   because their credit card balances are too high. This argument was made
   repeatedly during the first half of the year, but consumer spending -- which
   accounts for roughly two-thirds of economic growth -- did not slow to the
   extent analysts had predicted. One explanation is that the increased
   availability and convenience of credit cards may have increased their usage
   for routine purchases, including groceries and gasoline. This gives the
   statistical appearance of a higher personal debt burden than is actually the
   case because many people pay off these routine purchases at the end of each
   month.

Q. HAS THE EQUITY PORTION OF THE PORTFOLIO CHANGED IN ANY SIGNIFICANT WAY DURING
   THE YEAR?

A. The most significant change was an increase in the equity weighting within
   the Portfolio -- from 62% to 69% -- which enabled us to capitalize on the
   momentum of the bull market. I have been somewhat concerned about a slowing
   in the economy, however, and have increased positions in less cyclical
   industries, such as health care. I have also reduced utility holdings due to
   the unattractive interest rate environment and the turmoil the industry is
   experiencing as deregulation transforms it.

Q. ARE THERE ANY NEW HOLDINGS IN THE PORTFOLIO THAT YOU WOULD LIKE TO HIGHLIGHT
   FOR SHAREHOLDERS?

A. Boeing is new to the Portfolio and a top holding. Boeing is the world's
   largest aircraft manufacturer and recently announced a merger with McDonnell
   Douglas. This is timely because Boeing has a tremendous backlog of orders,
   and the acquisition gives it the extra capacity it needs. McDonnell Douglas
   is in the opposite situation of having excess capacity in its commercial
   aircraft facilities. It is also a good fit because Boeing's business is
   almost entirely commercial, whereas McDonnell Douglass is primarily
   defense-oriented. Hence, the combined company will be less affected by market
   cycles within each sector. These factors should produce a healthy rate of
   growth for many years.

   Another recent addition is Eli Lilly, a large pharmaceutical company. Its
   largest and most successful product is Prozac, a proven anti-depression drug.
   Lilly now has a new drug for schizophrenia, Zyprexa, which looks to be a
   major advance in treating this devastating condition. Current drugs for this
   disease are often not effective or have very strong side effects that inhibit
   patients from functioning effectively in society. Eli Lillys product shows
   good efficacy with much more manageable side effects.

Q. HOW DID THE BONDS IN THE PORTFOLIO PERFORM THIS YEAR?

A. We own mainly "put bonds," which can be redeemed at a predetermined price,
   usually equal to par value, on a specific date. Because of this feature,
   these securities tend to perform better in a rising market and are impacted
   less in a declining market than otherwise similar bonds.

Q. WITH THE MARKET AT AN ALL-TIME HIGH, WHAT IS YOUR APPROACH TO INVESTING IN
   EQUITIES?

A. Our approach has been to maintain equity exposure. We have become somewhat
   more defensive in the types of stocks that we buy, emphasizing those stocks
   whose underlying fundamentals we are confident justify their valuations.

Q. WHAT ADVANTAGES CAN BE GAINED BY INVESTING IN A BALANCED FUND SUCH AS THIS?

A. A balanced fund can be advantageous in any market, but is especially so in a
   market like this one. The reason lies simply in the diversifi-cation of asset
   classes. By holding both stocks and bonds, our overall volatility is lower
   than if we were completely invested in either sector, and, over the long
   term, our returns have generally been much better than if we had invested
   100% in bonds. For investors seeking some income, and growth with reasonable
   principal stability, a balanced fund can make a great deal of sense.


          CHANGING ASSET ALLOCATION WITH CHANGING MARKET CONDITIONS...

PORTFOLIO ALLOCATION, WITH EQUITY SECTORS, AS OF 12/31/95*

CASH & OTHER                   5.6%
FIXED INCOME                  32.9%
EQUITIES                      61.5%
OTHER                          0.9%
CONSUMER NON-DURABLES         10.3%
BASIC MATERIALS               11.4%
ENERGY                        11.6%
UTILITIES                     11.7%
FINANCIALS                    15.6%

PORTFOLIO ALLOCATION, WITH EQUITY SECTORS, AS OF 12/31/96*

CASH & OTHER                   1.8%
FIXED INCOME                  28.9%
EQUITIES                      69.3%
OTHER                          5.4%
BUSINESS PRODUCTS/SERVICES     7.3%
TECHNOLOGY                     9.7%
BASIC MATERIALS               11.0%
HEALTH CARE                   16.0%
FINANCIAL                     19.9%

   *By market value as % of net assets on dates shown. Asset allocation and
   sector breakdown are subject to change due to active management.

<PAGE>

COMPARISON OF CHANGE IN VALUE OF A $10,000 INVESTMENT IN EV MARATHON INVESTORS
FUND, THE LEHMAN BROTHERS GOVERNMENT/CORPORATE BOND INDEX, THE STANDARD & POOR'S
500 AND 90-DAY U.S. TREASURY BILLS

- ---------------------------------------------------------
AVERAGE ANNUAL        1            Life          Value at
   RETURNS          year         of Fund*        12/31/96
- ---------------------------------------------------------
With CDSC           7.6%          10.5%          $13,915
- ---------------------------------------------------------
Without CSCS        12.6%         11.3%          $14,215
- ---------------------------------------------------------

               From November 30, 1993, through December 31, 1996

            EV MARATHON                 LEHMAN BROTHERS              90-DAY    
             INVESTORS                    GOVT./CORP.             U.S. TREASURY
Date           FUND       FUND W/CDSC     BOND INDEX     S&P 500      BILLS    
- --------    -----------   -----------   ---------------  -------  -------------
11/30/93     $10,000       $13,915        $10,000        $10,000     $10,000   
12/31/93     $10,183       $13,915        $10,044        $10,123     $10,077   
 1/31/94     $10,538       $13,915        $10,195        $10,475     $10,077   
 2/28/94     $10,284       $13,915        $ 9,973        $10,183     $10,077   
 3/31/94     $ 9,875       $13,915        $ 9,729        $ 9,740     $10,165   
 4/30/94     $ 9,926       $13,915        $ 9,649        $ 9,877     $10,165   
 5/31/94     $ 9,938       $13,915        $ 9,631        $10,024     $10,165   
 6/30/94     $ 9,722       $13,915        $ 9,608        $ 9,781     $10,271   
 7/31/94     $10,000       $13,915        $ 9,800        $10,113     $10,271   
 8/31/94     $10,187       $13,915        $ 9,804        $10,517     $10,271   
 9/30/94     $ 9,948       $13,915        $ 9,656        $10,259     $10,394   
10/31/94     $10,000       $13,915        $ 9,645        $10,497     $10,394   
11/30/94     $ 9,787       $13,915        $ 9,628        $10,107     $10,394   
12/31/94     $ 9,870       $13,915        $ 9,691        $10,257     $10,539   
 1/31/95     $ 9,954       $13,915        $ 9,877        $10,529     $10,539   
 2/28/95     $10,336       $13,915        $10,106        $10,932     $10,539   
 3/31/95     $10,557       $13,915        $10,174        $11,254     $10,688   
 4/30/95     $10,788       $13,915        $10,316        $11,596     $10,688   
 5/31/95     $11,204       $13,915        $10,748        $12,044     $10,688   
 6/30/95     $11,383       $13,915        $10,834        $12,328     $10,830   
 7/31/95     $11,615       $13,915        $10,793        $12,746     $10,830   
 8/31/95     $11,801       $13,915        $10,931        $12,768     $10,830   
 9/30/95     $11,960       $13,915        $11,042        $13,307     $10,970   
10/31/95     $11,960       $13,915        $11,204        $13,267     $10,970   
11/30/95     $12,279       $13,915        $11,388        $13,839     $10,970   
12/31/95     $12,630       $13,915        $11,556        $14,107     $11,104   
 1/31/96     $12,813       $13,915        $11,628        $14,594     $11,104   
 2/28/96     $12,850       $13,915        $11,381        $14,721     $11,104   
 3/31/96     $12,937       $13,915        $11,286        $14,864     $11,243   
 4/30/96     $13,024       $13,915        $11,208        $15,093     $11,243   
 5/31/96     $13,161       $13,915        $11,189        $15,467     $11,243   
 6/30/96     $13,259       $13,915        $11,339        $15,531     $11,386   
 7/31/96     $12,812       $13,915        $11,365        $14,850     $11,386   
 8/31/96     $13,073       $13,915        $11,337        $15,160     $11,386   
 9/30/96     $13,468       $13,915        $11,539        $16,012     $11,529   
10/31/96     $13,732       $13,915        $11,808        $16,459     $11,529   
11/30/96     $14,348       $13,915        $12,026        $17,696     $11,529   
12/31/96     $14,215       $13,915        $11,892        $17,345     $11,675   

Fund, assuming entire investment was redeemed on 12/31/96 & max. applicable
contingent deferred sales charge deducted from proceeds

Past performance is not indicative of future results. Investment returns and
principal value will fluctuate so that an investor's shares, when redeemed, may
be worth more or less than their original cost. Source: Towers Data Systems,
Bethesda, MD. *Investment operations commenced on 11/2/93. +Index information
is available only at month-end; therefore, the line comparison begins at the
next month-end following the commencement of the Fund's investment operations.

<PAGE>

THE FUND'S PERFORMANCE

In accordance with guidelines issued by the Securities and Exchange Commission,
the above performance chart compares the Fund's total return with that of a
broad-based securities market index. The lines on the chart represent the total
returns of $10,000 hypothetical investments in the Fund and the Standard &
Poor's 500 Index.

TOTAL RETURN FIGURES

The solid blue line on the chart represents the Funds performance at net asset
value. The Fund's total return reflects Fund expenses and transaction costs. The
second dollar figure for the Fund, in blue italics, reflects the Fund's maximum
applicable contingent deferred sales charge (CDSC), deducted at redemption as
follows: 5% - 1st and 2nd years; 4% - 3rd year; 3% - 4th year; 2% - 5th year; 1%
- - 6th year.

The solid black line represents the performance of the Lehman Brothers
Government/Corporate Bond Index, a diversified, unmanaged index of corporate and
U.S. government bonds. The Indices' total return figures do not reflect any
commissions or expenses that would be incurred if an investor individually
purchased or sold the securities in the Indices.

The dashed line represents the performance of 90-Day U.S. Treasury Bills. It is
included to indicate how the Fund has performed relative to a portfolio of cash
equivalents. Principal and interest payments of Treasury Bills are guaranteed by
the U.S. Government.

NOTE: It is not possible to invest directly in an index.


<PAGE>

                          EV MARATHON INVESTORS FUND
                             FINANCIAL STATEMENTS

                     STATEMENT OF ASSETS AND LIABILITIES
- ------------------------------------------------------------------------------
                              December 31, 1996
- ------------------------------------------------------------------------------
ASSETS:
  Investment in Investors Portfolio (Portfolio), at value
    (Note 1A)                                                       $47,333,528
  Receivable for Fund shares sold                                        45,647
  Deferred organization expenses (Note 1E)                               17,957
                                                                    -----------
      Total assets                                                  $47,397,132

LIABILITIES:
  Dividends payable                                    $478,523
  Payable for Fund shares redeemed                       62,916
  Payable for Trustees' fees                                 42
  Accrued expenses                                       30,843
                                                       --------
      Total liabilities                                                 572,324
                                                                    -----------
NET ASSETS for 3,794,900 shares of beneficial
  interest outstanding                                              $46,824,808
                                                                    ===========
SOURCES OF NET ASSETS:
  Paid-in capital                                                   $40,346,985
  Undistributed net investment income                                    22,025
  Accumulated net realized gain on investment
    transactions                                                        271,263
  Unrealized appreciation of investments                              6,184,535
                                                                    -----------
      Total net assets                                              $46,824,808
                                                                    ===========
NET ASSET VALUE, OFFERING AND REDEMPTION PRICE PER SHARE
  ($46,824,808 / 3,794,900 shares of beneficial
     interest outstanding)                                            $12.34
                                                                      ======

    The accompanying notes are an integral part of the financial statements
<PAGE>
                           STATEMENT OF OPERATIONS
- ------------------------------------------------------------------------------
                     For the Year Ended December 31, 1996
- ------------------------------------------------------------------------------
INVESTMENT INCOME (NOTE 1B):
  Interest income allocated from Portfolio                         $1,021,317
  Dividend income allocated from Portfolio (net of
    withholding tax expense of $5,802)                                610,181
  Expenses allocated from Portfolio                                  (292,383)
                                                                   ----------
      Total investment income                                      $1,339,115
  Expenses -
    Compensation of Trustees not members of the
    Investment Adviser's organization (Note 6)         $      133
    Custodian fee                                           5,198
    Distribution and service fees (Note 4)                362,816
    Transfer agent fees                                    37,370
    Printing and postage                                   26,271
    Legal and accounting services                          10,532
    Registration fees                                      18,580
    Amortization of organization expenses (Note 1E)         8,052
    Miscellaneous                                           5,538
                                                       ----------
      Total expenses                                                  474,490
                                                                   ----------
        Net investment income                                      $  864,625

REALIZED AND UNREALIZED GAIN FROM PORTFOLIO:
  Net realized gain on investment transactions
    (identified cost basis)                            $1,993,369
  Change in unrealized appreciation of investments      2,187,283
                                                       ----------
    Net realized and unrealized gain on investments                 4,180,652
                                                                   ----------
        Net increase in net assets resulting from
          operations                                               $5,045,277
                                                                   ==========

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

                       STATEMENT OF CHANGES IN NET ASSETS
- -------------------------------------------------------------------------------
                                        YEAR ENDED DECEMBER 31,     YEAR ENDED
                                       --------------------------   JANUARY 31,
                                          1996           1995*         1995
                                       ------------  ------------  -------------
INCREASE (DECREASE) IN NET ASSETS:
  From operations -
    Net investment income               $   864,625   $   513,242   $   212,550
    Net realized gain (loss) on
      investment transactions             1,993,369       339,664       (66,913)
    Change in unrealized appreciation
      of investments                      2,187,283     4,243,185      (312,931)
                                        -----------   -----------   -----------
      Net increase (decrease) in net
        assets resulting from
        operations                      $ 5,045,277   $ 5,096,091   $  (167,294)
                                        -----------   -----------   -----------
  Distributions to shareholders -
    From net investment income          $  (864,625)  $  (503,251)  $  (204,818)
    In excess of net investment
      income                                (23,094)        --            --
    From net realized gain on 
      investment transactions            (1,975,424)     (347,863)         (649)
                                        -----------   -----------   -----------
      Total distributions to
        shareholders                    $(2,863,143)  $  (851,114)  $  (205,467)
                                        -----------   -----------   -----------
  Net increase in net assets from Fund
    share transactions (Note 2)         $11,127,993   $14,761,734   $12,394,066
                                        -----------   -----------   -----------
      Net increase in net assets        $13,310,127   $19,006,711   $12,021,305
NET ASSETS:
  At beginning of year                   33,514,681    14,507,970     2,486,665
                                        -----------   -----------   -----------
  At end of year (including
    undistributed net investment
    income of $22,025, $48,244
    and $56,796, respectively)          $46,824,808   $33,514,681   $14,507,970
                                        ===========   ===========   ===========

*For the eleven month period ended December 31, 1995 (Note 7).

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

                             FINANCIAL HIGHLIGHTS
- -------------------------------------------------------------------------------
                                   YEAR ENDED               YEAR ENDED 
                                  DECEMBER 31,              JANUARY 31,
                             ---------------------     ----------------------
                                1996       1995***       1995          1994**
                              -------     -------      -------        -------
NET ASSET VALUE -
  Beginning of year           $11.700     $ 9.540      $10.390        $10.000
                              -------     -------      -------        -------
  Income (loss) from operations:
    Net investment income     $ 0.250     $ 0.231      $ 0.286        $ 0.025
    Net realized and
      unrealized gain
      (loss) on
      investments               1.190       2.299       (0.861)         0.365
                              -------     -------      -------        -------
      Total income (loss)
        from operations       $ 1.440     $ 2.530      $(0.575)       $ 0.390
                              -------     -------      -------        -------
  Less distributions:
    From net investment
      income                  $(0.250)    $(0.245)     $(0.274)       $  --
    In excess of net
      investment income        (0.010)       --           --             --
    From net realized gain
      on investment
      transactions             (0.540)     (0.125)      (0.001)          --
                              -------     -------      -------        -------
      Total distributions     $(0.800)    $(0.370)     $(0.275)       $  --
                              -------     -------      -------        -------
NET ASSET VALUE -
  End of year                 $12.340     $11.700      $ 9.540        $10.390
                              -------     -------      -------        -------
TOTAL RETURN(2)                12.55%      26.88%(3)    (5.44%)         3.90%(3)
RATIOS/SUPPLEMENTAL DATA (to average daily net assets):
  Expenses(1)                   1.84%       2.03%+       2.41%          1.04%+*
  Net investment income         2.08%       2.48%+       2.47%          2.49%+*
NET ASSETS, AT END OF YEAR
  (000'S OMITTED)             $46,825     $33,515     $14,508         $ 2,487

*   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(1)                                                       2.29%+
      Net investment income                                             1.24%+

+   Computed on an annualized basis.
**  For the period from the start of business, November 2, 1993, to January 31,
    1994.
*** For the eleven month period ended December 31, 1995 (Note 7).
(1) Includes the Fund's share of Investors Portfolio's allocated expenses.
(2) 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 each period
    reported. Dividends and distributions, if any, are assumed to be reinvested
    at the net asset value on the record date.
(3) Total return is not calculated on an annualized basis.

    The accompanying notes are an integral part of the financial statements
<PAGE>
                         NOTES TO FINANCIAL STATEMENTS
                               DECEMBER 31, 1996

(1) SIGNIFICANT ACCOUNTING POLICIES

EV Marathon Investors Fund (the Fund) is a diversified series of Eaton Vance
Special Investment Trust (the Trust). The Trust is an entity of the type
commonly known as a Massachusetts business trust and is registered under the
Investment Company Act of 1940, as amended, as an open-end management investment
company. The Fund invests all of its investable assets in interests in the
Investors 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 (15.7% at December 31, 1996). 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 are
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 determined in accordance with generally accepted accounting
principles.

C. EXPENSE REDUCTION -- The Fund has entered into an arrangement with its
custodian agent whereby interest earned on uninvested cash balances are used to
offset custody fees. All significant reductions are reported as a reduction of
expenses in the Statement of Operations.

D. 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, options and financial futures transactions.
Accordingly, no provision for federal income or excise tax is necessary.
Pursuant to Section 852 of the Internal Revenue Code, the Fund designates
$1,774,223 as capital gain dividends for its taxable year ended December 31,
1996.

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

F. DISTRIBUTIONS -- Generally accepted accounting principles require that
differences in the recognition or classification of income between the financial
statements and tax earnings and profits which result in temporary
over-distributions for financial statement purposes, are classified as
distributions in excess of net investment income or accumulated net realized
gains. Permanent differences between book and tax accounting relating to
distributions are reclassified to paid-in capital, with no impact to the net
asset value of the Fund.

G. USE OF ESTIMATES -- The preparation of the financial statements in conformity
with generally accepted accounting principles requires management to make
estimates and assumptions that affect the reported amounts of assets and
liabilities at the date of the financial statements and the reported amounts of
income and expense during the reporting period. Actual results could differ from
those estimates.

- ------------------------------------------------------------------------------
(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 were as follows:
<TABLE>
<CAPTION>

                                                      YEAR ENDED                   YEAR ENDED                   YEAR ENDED
                                                   DECEMBER 31, 1996            DECEMBER 31, 1995*           JANUARY 31, 1995
                                                ------------------------    ------------------------    ------------------------
                                                  SHARES       AMOUNT        SHARES        AMOUNT        SHARES        AMOUNT
                                                ---------    -----------    ---------    -----------    ---------    -----------
<S>                                             <C>          <C>            <C>          <C>            <C>          <C>        
Sales                                           1,703,686    $20,480,961    1,682,733    $18,387,614    1,591,466    $15,386,579
Issued to shareholders electing  to receive 
  payment of distributions in Fund shares         187,664      2,274,104       67,622        743,567       18,936        180,856
Redemptions                                      (960,723)   (11,627,072)    (406,361)    (4,369,447)    (329,514)    (3,173,369)
                                                ---------    -----------    ---------    -----------    ---------    -----------
  Net increase                                    930,627    $11,127,993    1,343,994    $14,761,734    1,280,888    $12,394,066
                                                =========    ===========    =========    ===========    =========    ===========
*For the eleven month period ended December 31, 1995. (Note 7)
</TABLE>

- -------------------------------------------------------------------------------
(3) INVESTMENT TRANSACTIONS

Increases and decreases in the Fund's investment in the Portfolio aggregated
$20,944,211 and $12,281,011, 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 pay the
principal underwriter, Eaton Vance Distributors, Inc. (EVD), amounts equal to
1/365th of 0.75% of the Fund's daily net assets, for providing ongoing
distribution services and facilities to the Fund. The Fund will automatically
discontinue payments to EVD during any period in which there are no outstanding
Uncovered Distribution Charges, which are 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. The Fund paid $311,863 to EVD for the year ended December 31,
1996, representing 0.75% of average daily net assets. At December 31, 1996, the
amount of Uncovered Distribution Charges of EVD calculated under the Plan was
approximately $1,424,961.

  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. 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 when there are no
outstanding Uncovered Distribution Charges of EVD. During the year ended
December 31, 1996, the Fund paid or accrued $50,953 under the Plan to the
Principal Underwriter and Authorized Firms.

- ------------------------------------------------------------------------------
(5) CONTINGENT DEFERRED SALES CHARGE

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 of redemption after purchase, declining one
percentage point each subsequent 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 $166,511 of CDSC paid by shareholders for the year ended
December 31, 1996.

- ------------------------------------------------------------------------------
(6) TRANSACTIONS WITH AFFILIATES

Eaton Vance Management (EVM) serves only as the administrator of the Fund, but
receives no compensation. The Portfolio has engaged Boston Management and
Research (BMR), a subsidiary of EVM, to render investment advisory services. See
Note 3 of the Portfolio's Notes to Financial Statements which are included
elsewhere in this report. Except as to Trustees of the Fund and the Portfolio
who are not members of EVM's or BMR's organizations, officers and Trustees
receive remuneration for their services to the Fund out of such investment
adviser fee. Certain of the officers and Trustees of the Fund and Portfolio are
officers and directors/trustees of the above organizations.

- ------------------------------------------------------------------------------
(7) CHANGE IN YEAR END

The Fund changed its fiscal year end from January 31 to December 31, effective
December 31, 1995.
<PAGE>

                      REPORT OF INDEPENDENT ACCOUNTANTS
- ------------------------------------------------------------------------------
TO THE SHAREHOLDERS AND TRUSTEES OF
EV MARATHON INVESTORS FUND:

We have audited the accompanying statement of assets and liabilities of EV
Marathon Investors Fund, a series of Eaton Vance Special Investment Trust, as of
December 31, 1996, the related statement of operations for the year then ended,
the statement of changes in net assets and the financial highlights for the year
then ended, the eleven month period ended December 31, 1995, and the year ended
January 31, 1995 and the financial highlights for the period from November 2,
1993 (start of business) to January 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 audits.

We conducted our audits in accordance with generally accepted auditing
standards. Those standards require that we plan and perform the audits 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, 1996 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 audits provide 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 Investors Fund, a series of Eaton Vance Special Investment Trust, as of
December 31, 1996, the results of its operations for the year then ended, the
changes in its net assets and the financial highlights for the year then ended,
the eleven month period ended December 31, 1995, and for the year ended January
31, 1995, and the financial highlights for the period from November 2, 1993
(start of business) to January 31, 1994, in conformity with generally accepted
accounting principles.

                                              COOPERS & LYBRAND L.L.P.

BOSTON, MASSACHUSETTS
JANUARY 31, 1997

<PAGE>
- --------------------------------------------------------------------------------
                             INVESTORS PORTFOLIO
                           PORTFOLIO OF INVESTMENTS
                              DECEMBER 31, 1996
- -------------------------------------------------------------------------------
                              COMMON STOCKS - 67.1%
- -------------------------------------------------------------------------------
NAME OF COMPANY                                SHARES           VALUE
- -------------------------------------------------------------------------------
AEROSPACE & DEFENSE - 1.8%
Boeing Co.                                     50,000      $  5,318,750
                                                           ------------
AUTOMOTIVE - 1.1%
General Motors Corp.                           60,000      $  3,345,000
                                                           ------------
BANKS - 3.3%
Banco Latinoamericano de Exportaciones*        75,000      $  3,806,250
Chase Manhattan Corp.                          70,200         6,265,350
                                                           ------------
                                                           $ 10,071,600
                                                           ------------
BEVERAGES - 1.3%
PepsiCo, Inc.                                 130,000      $  3,802,500
                                                           ------------
CHEMICALS - 2.8%
Monsanto Corp.                                125,000      $  4,859,375
Praxair, Inc.                                  80,000         3,690,000
                                                           ------------
                                                           $  8,549,375
                                                           ------------
COMPUTER & BUSINESS EQUIPMENT - 2.9%
Hewlett Packard Co.                            90,000      $  4,522,500
Xerox Corp.                                    81,000         4,262,625
                                                           ------------
                                                           $  8,785,125
                                                           ------------
DRUGS - 5.3%
Astra AB, A Free Shares*                      100,000      $  4,935,540
Elan Corp. PLC, ADR                            75,000         2,493,750
Lilly (Eli) & Co.                              65,000         4,745,000
Pfizer, Inc.                                   18,900         1,566,338
Smithkline Beecham PLC, ADR                    35,000         2,380,000
                                                           ------------
                                                           $ 16,120,628
                                                           ------------
ELECTRIC UTILITIES - 1.0%
The Southern Co.                              140,000      $  3,167,500
                                                           ------------
ELECTRONICS - SEMICONDUCTORS - 2.6%
Intel Corp.                                    40,000      $  5,237,500
MEMC Electronic Materials, Inc.*              109,000         2,452,500
                                                           ------------
                                                           $  7,690,000
                                                           ------------
FINANCIAL - MISCELLANEOUS - 4.6%
Federal National Mortgage Association         135,000      $  5,028,750
MBNA Corp.                                    100,000         4,150,000
MGIC Investment Corp.                          60,000         4,560,000
                                                           ------------
                                                           $ 13,738,750
                                                           ------------
FOOD - 0.5%
Hershey Foods Corp.                            34,400      $  1,505,000
                                                           ------------
FERTILIZER - 1.6%
Potash Corp. of Saskatchewan                   55,000      $  4,675,000
                                                           ------------
HEALTHCARE SERVICES - 0.6%
Vencor, Inc.                                   60,000      $  1,897,500
                                                           ------------
HOUSEHOLD PRODUCTS - 1.0%
Kimberly Clark Corp.                           31,200      $  2,971,800
                                                           ------------
INFORMATION SERVICES - 2.3%
Electronic Data Systems Corp.                  80,000      $  3,460,000
Reuters Holdings PLC, ADR                      45,000         3,442,500
                                                           ------------
                                                           $  6,902,500
                                                           ------------
INSURANCE - 5.7%
Allstate Corp.                                 90,000      $  5,208,750
General Re Corp.                               20,000         3,155,000
Mutual Risk Management Ltd.                    93,300         3,452,100
Progressive Corp.                              80,000         5,390,000
                                                           ------------
                                                           $ 17,205,850
                                                           ------------
LODGING & GAMING - 1.1%
ITT Corp.*                                     75,000         3,253,125
                                                          -------------
MACHINERY - 1.4%
Deere & Co.                                   105,000      $  4,265,625
                                                           ------------
MEDICAL PRODUCTS - 5.0%
Baxter International, Inc.                    100,000      $  4,100,000
Boston Scientific Corp.*                       90,000         5,400,000
Sofamor Danek Group, Inc.*                    180,300         5,499,150
                                                           ------------
                                                           $ 14,999,150
                                                           ------------
METALS & MINING - 0.8%
J & L Specialty Steel, Inc.                   200,000      $  2,275,000
                                                           ------------
OIL & GAS - EXPLORATION & PRODUCTION - 2.7%
Anadarko Petroleum Corp.                       60,000      $  3,885,000
Triton Energy Ltd.*                            90,000         4,365,000
                                                           ------------
                                                           $  8,250,000
                                                           ------------
OIL & GAS - INTEGRATED - 2.2%
Exxon Corp.                                    43,640      $  4,276,720
Mobil Corp.                                    20,000         2,445,000
                                                           ------------
                                                           $  6,721,720
                                                           ------------
PAPER & FOREST PRODUCTS - 0.8%
Plum Creek Timber Co., L.P.                    90,000      $  2,340,000
                                                           ------------
PHOTOGRAPHY - 1.7%
Eastman Kodak Co.                              65,000      $  5,216,250
                                                           ------------
PUBLISHING - 0.9%
McGraw-Hill, Inc.                              56,500      $  2,606,063
                                                           ------------
REITS - 3.5%
Colonial Properties Trust                      80,000      $  2,430,000
Equity Residential Properties Trust           101,400         4,182,750
ROC Communities, Inc.                         116,250         3,225,937
Security Capital Industrial Trust              37,000           790,875
                                                           ------------
                                                           $ 10,629,562
                                                           ------------
RETAIL - FOOD & DRUG - 1.3%
CVS Corp.                                      95,000      $  3,930,625
                                                           ------------
RETAIL - SPECIALTY - 2.3%
Circuit City Stores, Inc.                     100,000      $  3,012,500
The Home Depot, Inc.                           80,000         4,010,000
                                                           ------------
                                                           $  7,022,500
                                                           ------------
SPECIALTY CHEMICALS & MATERIALS - 2.9%
Corning, Inc.                                 100,000      $  4,625,000
Sealed Air Corp.*                             100,000         4,162,500
                                                           ------------
                                                           $  8,787,500
                                                           ------------
TELEPHONE UTILITIES - 1.2%
Ameritech Corp.                                60,448      $  3,664,660
                                                           ------------
TRANSPORTATION - 0.9%
Southwest Airlines, Inc.                      125,000      $  2,765,625
                                                           ------------
    TOTAL COMMON STOCKS
(IDENTIFIED COST, $140,868,078)                            $202,474,283
                                                           ------------

- -------------------------------------------------------------------------------
                  CONVERTIBLE PREFERRED STOCK - 1.2%
- -------------------------------------------------------------------------------
NAME OF COMPANY                               SHARES           VALUE
- -------------------------------------------------------------------------------
Freeport McMoRan Copper & Gold, 5%            125,000      $  3,468,750
                                                           ------------
    TOTAL CONVERTIBLE PREFERRED STOCK
      (IDENTIFIED COST, $2,872,500)                        $  3,468,750
                                                           ------------
- -------------------------------------------------------------------------------
                        PREFERRED STOCK - 1.0%
- -------------------------------------------------------------------------------
NAME OF COMPANY                              SHARES           VALUE
- -------------------------------------------------------------------------------
Bank of Boston, Series C Adjustable rate       37,600      $  3,064,400
                                                           ------------
    TOTAL PREFERRED STOCK
      (IDENTIFIED COST, $1,815,525)                        $  3,064,400
                                                           ------------
- -------------------------------------------------------------------------------
               U.S. TREASURY/AGENCY OBLIGATIONS - 14.3%
- -------------------------------------------------------------------------------
                                           PRINCIPAL AMOUNT
NAME OF COMPANY                             (000's Omitted)    VALUE
- -------------------------------------------------------------------------------
Federal Home Loan Morgage Corp., PAC,
  CMO, Series 1033E,
  8.10s, 12/15/04                            $    238      $    238,746
Federal Home Loan Mortgage Corp., PAC,
  CMO, Series 59-D,
  9.70s, 1/15/16                                1,501         1,522,765
Federal Home Loan Mortgage Corp.,
  PAC, CMO, Series 34-C, 9s,
  11/15/19                                        472           486,809
Federal Home Loan Mortgage Corp.,
  7.95s, 5/15/20                                1,738         1,756,236
Federal Home Loan Mortgage Corp.,
  PAC, CMO, Series 41-F, 10s, 5/15/20           2,338         2,507,792
Federal National Mortgage Association,
  7.50s, 5/25/19                                1,264         1,268,807
Federal National Mortgage Association,
  PAC, CMO, Series 1990 82-K,
  8.50s, 7/25/19                                1,262         1,268,779
Federal National Mortgage Association,
  PAC, CMO, Series 1990 24E,
  9s, 3/25/20                                   2,000         2,071,860
U.S. Treasury Notes, 7.375s, 11/15/97           1,800         1,825,867
U.S. Treasury Notes, 8.125s, 2/15/98            6,500         6,668,610
U.S. Treasury Notes, 7.125s, 9/30/99           17,000        17,470,220
U.S. Treasury Notes, 5.625s, 11/30/00           6,000         5,891,220
                                                           ------------
    TOTAL U.S. TREASURY/AGENCY OBLIGATIONS
      (IDENTIFIED COST, $43,168,541)                       $ 42,977,711
                                                           ------------
- -------------------------------------------------------------------------------
                        CORPORATE BONDS - 14.6%
- -------------------------------------------------------------------------------
                                         FACE AMOUNT
NAME OF COMPANY                          (000'S OMITTED)           VALUE
- -------------------------------------------------------------------------------
Bell Telephone Co., 8.35s, 12/15/30          $  3,000      $  3,525,420
Chesapeake Potomac Telephone,
  8.375s, 10/1/29                               1,500         1,728,540
Columbia/HCA Health, 8.36s, 5/15/24               900         1,007,028
Columbia/HCA Health, 6.73s, 7/15/45             1,000         1,003,790
Commercial Credit Corp.,
  7.875s, 2/1/25                                2,000         2,168,860
Connecticut Light & Power,
  7.875s, 10/1/24                               3,775         4,140,080
Dayton Hudson, Medium Term Notes,
  9.50s, 6/10/15                                  650           748,059
Deere & Co., 8.95s, 6/15/19                       250           282,733
General Motors Corp., 8.80s, 3/1/21             3,130         3,567,605
General Motors Corp., Medium Term
  Notes, 9.45s, 11/1/11                         3,000         3,558,630
Grand Metropolitan Investments,
  7.45s, 4/15/35                                3,090         3,286,926
Hertz Corp., 9s, 11/1/09                        2,600         2,970,032
Inter American Development Bank,
  8.875s, 6/1/09                                2,000         2,330,520
Inter American Development Bank,
  8.40s, 9/1/09                                 2,500         2,853,325
Johnson Controls,
  7.70s, 3/1/15                                 1,360         1,446,646
Pitney Bowes Credit Corp.,
  9.25s, 6/15/08                                1,650         1,942,858
Procter & Gamble Co.,
  8s, 9/1/24                                    3,000         3,397,530
Seagram (Joseph) & Sons, 9.65s, 8/15/18         1,030         1,272,276
State Street Bank,
  7.35s, 6/15/26                                1,700         1,767,609
TRW, Inc., Medium Term Notes,
  9.35s, 6/4/20                                   900         1,080,315
                                                           ------------
    TOTAL CORPORATE BONDS
      (IDENTIFIED COST, $42,736,671)                       $ 44,078,782
                                                           ------------
- -------------------------------------------------------------------------------
                          SHORT-TERM OBLIGATIONS - 1.2%
- -------------------------------------------------------------------------------
                                          FACE AMOUNT
NAME OF COMPANY                          (000'S OMITTED)     VALUE
- -------------------------------------------------------------------------------
Associates Corp. of North America,
  6.5s, 1/02/97                              $  3,624      $  3,623,346
                                                           ------------
    TOTAL SHORT-TERM OBLIGATIONS,
      AT VALUE                                             $  3,623,346
                                                           ------------
    TOTAL INVESTMENTS AT VALUE - 99.4%
      (IDENTIFIED COST, $235,084,661)                      $299,687,272
    OTHER ASSETS, LESS LIABILITIES - 0.6%                     1,873,510
                                                           ------------
    NET ASSETS - 100%                                      $301,560,782
                                                           ============

*Non-income producing security.
ADR - American Depository Receipt
REIT - Real Estate Investment Trust
PAC - Planned Amortization Class
CMO - Collateralized Mortgage Obligations

    The accompanying notes are an integral part of the financial statements
<PAGE>
- --------------------------------------------------------------------------------
                             FINANCIAL STATEMENTS
                     STATEMENT OF ASSETS AND LIABILITIES
- ------------------------------------------------------------------------------
                              December 31, 1996
- ------------------------------------------------------------------------------
ASSETS:
  Investments, at value (Note 1A) (identified cost,
    $235,084,661)                                                $299,687,272
  Cash                                                                  2,239
  Receivable for investments sold                                     156,885
  Interest receivable                                               1,386,807
  Dividends receivable                                                333,187
  Tax reclaim receivable                                               15,160
  Deferred organization expenses (Note 1E)                              5,774
                                                                 ------------
      Total assets                                               $301,587,324

LIABILITIES:
  Payable for Trustees' fees                            $ 3,712
  Accrued expenses                                       22,830
                                                        -------
      Total liabilities                                                26,542
                                                                 ------------
NET ASSETS applicable to investors' interest in Portfolio        $301,560,782
                                                                 ============
SOURCES OF NET ASSETS:
  Net proceeds from capital contributions and
    withdrawals                                                  $236,958,175
  Unrealized appreciation of investments (computed on
    the basis of identified cost)                                  64,602,611
                                                                 ------------
      Total net assets                                           $301,560,782
                                                                 ============


    The accompanying notes are an integral part of the financial statements

<PAGE>
                           STATEMENT OF OPERATIONS
- ------------------------------------------------------------------------------
                     For the Year Ended December 31, 1996
- ------------------------------------------------------------------------------
INVESTMENT INCOME (NOTE 1B):
    Interest income                                               $ 7,063,471
    Dividend income (net of withholding tax of
      $40,973)                                                      4,218,017
                                                                  -----------
      Total income                                                $11,281,488
                                                                  -----------
  Expenses --
    Investment adviser fee (Note 3)                 $ 1,794,096
    Compensation of Trustees not members of the
      Investment Adviser's organization (Note 3)         13,630
    Custodian fee                                       151,240
    Legal and accounting services                        40,594
    Amortization of organization expenses (Note 1E)       3,203
    Miscellaneous                                        10,717
                                                    -----------
      Total expenses                                                2,013,480
                                                                  -----------
        Net investment income                                     $ 9,268,008
                                                                  -----------
REALIZED AND UNREALIZED GAIN (LOSS):
  Net realized gain on investment transactions
    (identified cost basis)                         $30,748,316
  Change in unrealized appreciation of investments   (2,562,219)
                                                    -----------
      Net realized and unrealized gain on investments              28,186,097
                                                                  -----------
        Net increase in net assets resulting from
          operations                                              $37,454,105
                                                                  ===========
    The accompanying notes are an integral part of the financial statements
<PAGE>
<TABLE>
<CAPTION>
                                        STATEMENT OF CHANGES IN NET ASSETS
- -----------------------------------------------------------------------------------------------------------------
                                                              YEAR ENDED DECEMBER 31,
                                                          -------------------------------           YEAR ENDED
                                                               1996              1995**           JANUARY 31, 1995
                                                          -------------      ------------       ---------------------
INCREASE (DECREASE) IN NET ASSETS:

  From operations --
<S>                                                       <C>                <C>                <C>             
    Net investment income                                 $  9,268,008       $  8,692,310       $  9,351,946 
    Net realized gain on investment transactions            30,748,316          9,116,976          1,467,119 
    Change in unrealized appreciation of investments        (2,562,219)        43,494,132        (20,681,070)
                                                          ------------       ------------       ------------ 
      Net increase (decrease) in net assets from                                                             
        operations                                        $ 37,454,105       $ 61,303,418       $ (9,862,005)
                                                          ------------       ------------       ------------ 
  Capital transactions --                                                                                    
     Contributions                                        $ 32,919,522       $ 32,319,917       $ 29,380,822 
    Withdrawals                                            (45,187,645)       (34,406,030)       (32,695,351)
                                                          ------------       ------------       ------------ 
                                                                                                             
      Net decrease in net assets resulting from                                                              
        capital transactions                              $(12,268,123)      $ (2,086,113)      $ (3,314,529)
                                                          ------------       ------------       ------------ 
                                                                                                             
        Net increase (decrease) in net assets             $ 25,185,982       $ 59,217,305       $(13,176,534)
                                                                                                             
NET ASSETS:                                                                                                  
  At beginning of year                                     276,374,800        217,157,495        230,334,029 
                                                          ------------       ------------       ------------ 
  At end of year                                          $301,560,782       $276,374,800       $217,157,495 
                                                          ============       ============       ============
</TABLE>

<TABLE>
<CAPTION>
- ------------------------------------------------------------------------------------------------------------
                                          SUPPLEMENTARY DATA
- ------------------------------------------------------------------------------------------------------------
                                                       YEAR ENDED DECEMBER 31,         YEAR ENDED JANUARY 31,
                                                       ----------------------          ---------------------
                                                           1996     1995**                1995     1994*
                                                         --------  --------            --------  --------
RATIOS (to average daily net assets):
<S>                                                       <C>       <C>                 <C>       <C>   
  Expenses                                                0.70%     0.70%               0.71%+    0.69%+
  Net investment income                                   3.23%     4.25%               3.83%+    3.69%+

PORTFOLIO TURNOVER                                          64%       28%                 47%       15%
AVERAGE COMMISSION RATE PAID(1)                        $0.0591        --                  --        --
</TABLE>

  +Computed on an annualized basis.
  *For the period from the start of business, October 28, 1993, to
   January 31, 1994. **For the eleven month period ended December 31, 1995
   (Note 6).
(1)Average commission rate paid is computed by dividing the total dollar
   amount of commissions paid during the fiscal year by the total number
   of shares purchased and sold during the fiscal year for which
   commissions were charged. For fiscal years beginning on or after
   September 1, 1995, a fund is required to disclose its average
   commission rate per share for security trades on which commissions are
   charged.

    The accompanying notes are an integral part of the financial statements
<PAGE>
- --------------------------------------------------------------------------------
                         NOTES TO FINANCIAL STATEMENTS
                               DECEMBER 31, 1996

(1) SIGNIFICANT ACCOUNTING POLICIES
Investors Portfolio (the "Portfolio") is registered under the Investment
Company Act of 1940, as a diversified, open-end, management investment
company, which was organized as a trust under the laws of the State of New
York in 1992. The Declaration of Trust permits the Trustees to issue interests
in the Portfolio.  The following is a summary of significant accounting
policies of the Portfolio. The policies are in conformity with generally
accepted accounting principles.

A. INVESTMENT VALUATIONS  -- Securities listed on securities exchanges or on
the NASDAQ National Market System are valued at closing sales prices. Listed
or unlisted investments for which closing sale prices are not available are
valued at the mean between latest bid and asked prices. Debt investments
(other than mortgage-backed "pass-through" securities) are valued at prices
furnished by a pricing service. Mortgage-backed "pass through" securities are
valued using a matrix pricing system which takes into account closing bond
valuations, yield differentials, anticipated prepayments and interest rates.
Short-term obligations maturing in 60 days or less, are valued at amortized
cost, which approximates value. All other investments are valued at fair value
using methods determined in good faith by or at the direction of the Trustees.

B. INCOME  -- Interest income is determined on the basis of interest accrued,
adjusted for amortization of premium or discount on debt investments when
required for federal income tax purposes. Dividend income is recorded on the
ex-dividend date. Dividend income may include dividends that represent returns
of capital for federal income
tax purposes.

C. FEDERAL 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 must satisfy
the applicable source of income and diversification requirements (under the
Internal Revenue 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 taxable income, net realized capital
gains, and any other items of income, gain, loss, deduction or credit.

D. EXPENSE REDUCTION  -- The Fund has entered into an arrangement with its
custodian agent whereby interest earned on uninvested cash balances are used
to offset custody fees. All significant reductions are reported as a reduction
of expenses in the Statement of Operations.

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

F. SECURITY TRANSACTIONS  -- Investment transactions are accounted for on
the date the investments are purchased or sold. Realized gains and losses on
the sale of investments are determined on the identified cost basis.

G. USE OF ESTIMATES  The preparation of the financial statements in conformity
with generally accepted accounting principles requires management to make
estimates and assumptions that affect the reported amounts of assets and
liabilities at the date of the financial statements and the reported amounts
of income and expense during the reporting period. Actual results could differ
from those estimates.

- ------------------------------------------------------------------------------
(2) INVESTMENT TRANSACTIONS
Purchases and sales of investments, other than U.S. Government securities and
short-term obligations, aggregated $126,423,298 and $122,238,451, respectively.
Purchases and sales of U.S. Government/agency securities aggregated $57,614,455
and $37,447,328, 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 computed at the monthly rate of 5/96 of 1% (0.625% annually) of the
Portfolio's average daily net assets up to $300 million and at reduced rates as
daily net assets exceed that level. For the year ended December 31, 1996, the
fee was equivalent to 0.625% of the Portfolio's average net assets for such
period and amounted to $1,794,096. 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 service to the Portfolio out of such investment adviser
fee. 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 group of banks. The Portfolio may temporarily borrow from the line of
credit to satisfy redemption requests or settle investment transactions.
Interest is charged to each portfolio or fund based on its borrowings at an
amount above the banks' adjusted certificate of deposit rate, eurodollar rate
or federal funds rate. In addition, a fee computed at an annual rate of 0.15%
on the daily unused portion of the line of credit is allocated among the
participating portfolios and funds at the end of each quarter. The Portfolio
did not have any significant borrowings or allocated fees during the year ended
December 31, 1996.

- ------------------------------------------------------------------------------
(5) FEDERAL INCOME TAX BASIS OF INVESTMENTS The cost and unrealized appreciation
(depreciation) in the value of investments owned at December 31, 1996, as
computed on a federal income tax basis, are as follows:

      Aggregate cost                                        $234,809,581
                                                            ============
      Gross unrealized appreciation                         $ 69,150,437
      Gross unrealized depreciation                            4,272,746
                                                            ------------
        Net unrealized appreciation                         $ 64,877,691
                                                            ============
- -------------------------------------------------------------------------------
(6) CHANGE IN FISCAL YEAR END
The Portfolio changed its fiscal year end from January 31, to December 31,
effective December 31, 1995.

<PAGE>
                      REPORT OF INDEPENDENT ACCOUNTANTS
- ------------------------------------------------------------------------------
TO THE BOARD OF TRUSTEES AND INVESTORS OF
INVESTORS PORTFOLIO:

We have audited the accompanying statement of assets and liabilities of
Investors Portfolio, including the portfolio of investments, as of December 31,
1996, the related statement of operations for the year then ended and the
statement of changes in net assets and the supplementary data for the year then
ended, the eleven month period ended December 31, 1995, and for the year ended
January 31, 1995, and the supplementary data for the period from October 28,
1993 (start of business) to January 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 audits.

We conducted our audits in accordance with generally accepted auditing
standards. Those standards require that we plan and perform the audits 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, 1996 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 audits provide 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
Investors Portfolio, as of December 31, 1996, the results of its operations for
the year then ended, the changes in its net assets and the supplementary data
for the year then ended, the eleven month period ended December 31, 1995, and
for the year ended January 31, 1995 and the supplementary data for the period
from October 28, 1993 (start of business) to January 31, 1994, in conformity
with generally accepted accounting principles.

                                              COOPERS & LYBRAND L.L.P.

BOSTON, MASSACHUSETTS
JANUARY 31, 1997

<PAGE>

                            INVESTMENT MANAGEMENT

EV                   OFFICERS                TRUSTEES
MARATHON             JAMES B. HAWKES         M. DOZIER GARDNER
INVESTORS            President, Trustee      Vice Chairman, Eaton
FUND                 EDWARD E. SMILEY, JR.   Vance Management
24 Federal           Vice President          DONALD R. DWIGHT
Street               JAMES L. O'CONNOR       President, Dwight Partners, Inc.
Boston, MA           Treasurer               Chairman, Newspapers of
02110                THOMAS OTIS             New England, Inc.
                     Secretary               SAMUEL L. HAYES, III
                                             Jacob H. Schiff Professor of
                                             Investment Banking, Harvard
                                             University Graduate School of
                                             Business Administration
                                             NORTON H. REAMER
                                             President, United Asset
                                             Management Corporation
                                             JOHN L. THORNDIKE
                                             Director, Fiduciary Company
                                             Incorporated
                                             JACK L. TREYNOR
                                             Investment Adviser and
                                             Consultant
                    ------------------------------------------------------------

INVESTORS           OFFICERS                 TRUSTEES
PORTFOLIO           M. DOZIER GARDNER        DONALD R. DWIGHT
24 Federal          President, Trustee       President, Dwight Partners, Inc.
Street              JAMES B. HAWKES          Chairman, Newspapers of
Boston, MA          Vice President,          New England, Inc.
02110               Trustee                  SAMUEL L. HAYES, III
                    THOMAS E. FAUST, JR.     Jacob H. Schiff Professor of
                    Vice President and       Investment Banking, Harvard
                    Portfolio Manager        University Graduate School of
                    MICHAEL B. TERRY         Business Administration
                    Vice President           NORTON H. REAMER
                    JAMES L. O'CONNOR        President, United Asset
                    Treasurer                Management Corporation
                    THOMAS OTIS              JOHN L. THORNDIKE
                    Secretary                Director, Fiduciary Company
                                             Incorporated
                                             JACK L. TREYNOR
                                             Investment Adviser and
                                             Consultant




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