MORGAN STANLEY INSTITUTIONAL FUND INC
N-30D, 1996-09-09
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MORGAN STANLEY
 
         MORGAN STANLEY
         INSTITUTIONAL FUND, INC.
            SEMI-ANNUAL REPORT
             JUNE 30, 1996
[LOGO]
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[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
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TABLE OF CONTENTS
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<TABLE>
<S>                                           <C>
President's Letter..........................          1
Performance Summary.........................          2
Managers' Reports and Statements of Net
  Assets by Portfolio:
Global and International Equity Portfolios:
  Active Country Allocation.................          4
  Asian Equity..............................         15
  Emerging Markets..........................         22
  European Equity ..........................         31
  Global Equity ............................         36
  Gold......................................         41
  International Equity .....................         45
  International Magnum .....................         52
  International Small Cap...................         59
  Japanese Equity...........................         64
  Latin American............................         68
U.S. Equity Portfolios:
  Aggressive Equity.........................         73
  Emerging Growth...........................         77
  Equity Growth.............................         82
  Small Cap Value Equity....................         87
  U.S. Real Estate..........................         91
  Value Equity..............................         96
Balanced Portfolio..........................        100
Fixed Income Portfolios:
  Emerging Markets Debt.....................        104
  Fixed Income..............................        109
  Global Fixed Income.......................        113
  High Yield................................        120
  Municipal Bond............................        126
Money Market Portfolios:
  Money Market..............................        130
  Municipal Money Market....................        134
Statement of Operations.....................        141
Statement of Changes in Net Assets..........        145
Financial Highlights .......................        158
Notes to Financial Statements...............        182
Officers and Directors .....................        189
</TABLE>
 
This  report is authorized for distribution only when preceded or accompanied by
prospectuses  of  the  Morgan  Stanley  Institutional  Fund,  Inc.  Prospectuses
describe   in  detail  each  of  the  Portfolio's  investment  policies  to  the
prospective investor. Please read the  prospectuses carefully before you  invest
or send money.
 
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<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
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PRESIDENT'S LETTER
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FELLOW SHAREHOLDERS:
 
    We are pleased to present the Fund's semi-annual report for the six months
ended June 30, 1996. Our Fund now offers 25 portfolios, including 11 global and
international equity portfolios, 6 U.S. equity portfolios, a balanced portfolio,
5 fixed-income portfolios and 2 money market portfolios.
 
    The performance of each of the portfolios and commentaries from the
portfolio managers discussing the results of each portfolio are contained in
this report. The investment performance of the portfolios relative to their
respective benchmarks is also presented in the performance summary on page two
of this report.
 
    For the first half of 1996, a number of the Fund's emerging markets
portfolios were among its top performers on both an absolute and relative basis.
Each of the Latin American Portfolio, the Emerging Markets Portfolio and the
Emerging Markets Debt Portfolio had strong relative and absolute performance.
Although the U.S. equity market became increasingly volatile during the period,
several of our U.S. Equity portfolios registered strong performance. In
particular, the Aggressive Equity and Equity Growth Portfolios performed very
well. Several of our global and international portfolios turned in credible
performances as well, including the Global Equity and International Equity
Portfolios. Although the fixed income markets were difficult during the first
six months of the year, both the Fixed Income and High Yield Portfolios
continued to be top performers in their respective asset classes.
 
    Our portfolio managers have provided their insights as to the outlook for
the remainder of 1996 in their commentaries. It bears repeating, however, that
each Portfolio will continue to adhere to its investment strategy and style. We
remain firmly of the view that superior long-term results are best achieved by
adhering to a rigorous, well conceived and consistently applied investment
strategy.
 
    Looking ahead, we expect to commence offering shares in a new Technology
Portfolio in the early Fall. We hope you find the enclosed report informative.
We very much appreciate your support of the Fund.
 
Sincerely,
 
      [SIGNATURE]
 
Warren J. Olsen
PRESIDENT
 
August 16, 1996
 
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                                       1
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[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
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PERFORMANCE SUMMARY (UNAUDITED)
JUNE 30, 1996
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<TABLE>
<CAPTION>
                                                                               NET ASSET VALUE PER
                                  INCEPTION DATES           NET ASSETS                SHARE
                                --------------------  -----------------------  --------------------
                                 CLASS A    CLASS B     CLASS A      CLASS B    CLASS A    CLASS B
                                ---------  ---------  ------------  ---------  ---------  ---------
<S>                             <C>        <C>        <C>           <C>        <C>        <C>
GLOBAL AND INTERNATIONAL
 EQUITY PORTFOLIOS:
  Active Country Allocation       1/17/92    1/02/96  $    175,678  $     720  $   12.58  $   12.57
  Asian Equity                    7/01/91    1/02/96       428,915     13,479      20.60      20.59
  Emerging Markets                9/25/92    1/02/96     1,337,315     14,801      15.81      15.79
  European Equity                 4/02/93    1/02/96       139,785      2,060      15.57      15.56
  Global Equity                   7/15/92    1/02/96        78,960      1,908      16.23      16.21
  Gold                            2/01/94    1/02/96        35,688      1,027      10.95      10.94
  International Equity            8/04/89    1/02/96     2,027,199      4,798      16.87      16.85
  International Magnum            3/15/96    3/15/96        61,738      1,630      10.44      10.42
  International Small Cap        12/15/92         --       232,463         --      17.28         --
  Japanese Equity                 4/25/94    1/02/96       225,965      5,489       9.99       9.97
  Latin American                  1/18/95    1/02/96        27,055        817      12.19      12.17
U.S. EQUITY PORTFOLIOS:
  Aggressive Equity               3/08/95    1/02/96        42,760      5,571      14.87      14.86
  Emerging Growth                11/01/89    1/02/96        96,512      4,984      23.01      22.98
  Equity Growth                   4/02/91    1/02/96       186,848      4,903      16.44      16.43
  Small Cap Value Equity         12/17/92    1/02/96        46,746      1,511      13.00      12.99
  U.S. Real Estate                2/24/95    1/02/96       119,709      4,803      12.54      12.52
  Value Equity                    1/31/90    1/02/96       134,316      1,954      15.04      15.02
BALANCED PORTFOLIO                2/20/90    1/02/96        13,173      2,356      10.27      10.26
FIXED INCOME PORTFOLIOS:
  Emerging Markets Debt           2/01/94    1/02/96       191,976      3,074      10.17      10.15
  Fixed Income                    5/15/91    1/02/96       157,098      1,271      10.48      10.47
  Global Fixed Income             5/01/91    1/02/96       116,382      1,617      11.06      11.05
  High Yield                      9/28/92    1/02/96        87,902      3,499      10.50      10.47
  Municipal Bond                  1/18/95    1/02/96        31,869        168      10.16      10.16
MONEY MARKET PORTFOLIOS:
  Money Market                   11/15/88         --     1,062,384         --       1.00         --
  Municipal Money Market          2/10/89         --       770,065         --       1.00         --
</TABLE>
 
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 *  Cumulative (unannualized) total return since inception of the Portfolio.
**  The Portfolios began offering Class B Shares on January 2, 1996, except
    International Magnum, which began offering Class B Shares on March 15, 1996.
 
<TABLE>
<CAPTION>
                                               YIELD INFORMATION AS OF JUNE 30, 1996
- -----------------------------------------------------------------------------------------------------------------------------------
                                  30 DAY
                             CURRENT YIELD++                                    7 DAY        7 DAY        30 DAY         30 DAY
                          ----------------------                               CURRENT     EFFECTIVE      CURRENT      COMPARABLE
                           CLASS A     CLASS B                                 YIELD+        YIELD+       YIELD++        YIELD
                          ----------  ----------                             -----------  ------------  -----------  --------------
<S>                       <C>         <C>         <C>                        <C>          <C>           <C>          <C>
Fixed Income Portfolios:                          Money Market Portfolios:
  Emerging Markets Debt       12.65%      12.64%  Money Market                     4.89%         5.00%        4.89%       4.76% (20)
  Fixed Income                 6.59        6.44   Municipal Money Market           3.10          3.15         3.06        2.87  (20)
  Global Fixed Income          5.78        5.63
  High Yield                   9.86        9.61
  Municipal Bond               4.66        4.42
</TABLE>
 
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 +  The 7 day current yield and 7 day effective yield assume an annualization of
    the current yield at June 30, 1996 with all dividends reinvested. As with
    all money market portfolios, yields fluctuate as market conditions change
    and the 7 day yields are not necessarily indicative of future performance.
 
++  The current 30 day yield reflects the net investment income generated by the
    Portfolio over a specified 30-day period expressed as an annual percentage.
    Expenses accrued for the 30-day period include any fees charged to all
    shareholders. Yields will fluctuate as market conditions change and are not
    necessarily indicative of future performance.
 
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                                       2
<PAGE>
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<TABLE>
<CAPTION>
                                                                          AVERAGE ANNUAL FIVE YEAR     AVERAGE ANNUAL TOTAL
                                                                                                           RETURN SINCE
         SIX MONTHS TOTAL RETURN              ONE YEAR TOTAL RETURN             TOTAL RETURN                 INCEPTION
- -----------------------------------------  ---------------------------   ---------------------------   ---------------------
                            COMPARABLE                     COMPARABLE                    COMPARABLE              COMPARABLE
  CLASS A     CLASS B**       INDICES        CLASS A        INDICES        CLASS A        INDICES      CLASS A     INDICES
- -----------  -----------  ---------------  ------------   ------------   ------------   ------------   -------   -----------
 
<S>          <C>          <C>              <C>            <C>            <C>            <C>            <C>       <C>
     8.17%        7.80%        4.52% (1)    21.81%         13.28%(1)         --             --           9.39%     9.96%(1)
     5.75         5.32         8.36  (2)     5.58           8.17(2)          --             --          20.82     18.60(2)
    20.32        19.17        13.45  (3)    13.41           8.44(3)          --             --          16.93     15.99(3)
    11.85        10.75         6.43  (4)    12.61          14.69(4)          --             --          19.66     15.73(4)
    13.42        12.88         7.08  (5)    20.05          18.44(5)          --             --          19.48     13.35(5)
    28.07        24.18         3.16  (6)    34.92           3.81(6)          --             --          12.44     -3.77(6)
    11.35        10.56         4.52  (1)    18.67          13.28(1)       16.39%          9.99%(1)      11.72      3.95(1)
     4.40*        4.20*        3.73  (1)       --             --(1)          --             --             --        --(1)
    15.66           --         4.52  (1)    16.31          13.28(1)          --             --          18.63     15.33(1)
     7.77         7.78         1.13  (7)    24.63          11.08(7)          --             --           0.95      1.93(7)
    34.55        28.92        17.49  (8)    39.62          17.44(8)          --             --          15.27      5.48(8)
 
    22.63        21.75        10.25  (9)    46.39          23.21(9)          --             --          51.85     28.24(9)
     7.07         7.03        12.63  (10)   26.15          26.95(10)      11.44          20.02(10)      13.46     15.42(10)
    16.64        15.91        10.09  (11)   37.47          25.98(11)      16.84          15.71(11)      16.25     15.06(11)
     9.76         9.31        10.28  (12)   18.81          24.16(12)         --             --          12.83     16.75(12)
    11.10        10.15         6.90  (13)   24.20          16.16(13)         --             --          24.60     16.15(13)
     8.55         7.48        10.09  (11)   21.53          25.98(11)      15.35          15.71(11)      12.31     15.05(11)
 
     3.92         3.40         5.41  (14)   12.44          15.57(14)      11.26          11.68(14)      10.13     11.15(14)
 
    18.39        16.94        13.38  (15)   36.37          32.39(15)         --             --          11.64      6.95(15)
    -0.92        -1.02        -1.22  (16)    5.86           5.01(16)       8.24           7.96(16)       8.06      8.15(16)
     0.20         0.02        -1.16  (17)    6.23           2.05(17)       8.67          10.31(17)       8.10      9.68(17)
     4.47         3.89         3.75  (18)   12.62           9.95(18)         --             --          11.86     10.54(18)
    -0.09        -0.10         0.09  (19)    4.30           5.54(19)         --             --           5.93      8.22(19)
 
     2.46           --           --            --             --             --             --             --        --
     1.51           --           --            --             --             --             --             --        --
</TABLE>
 
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<TABLE>
<C>        <S>
           INDICES:
      (1)  MSCI EAFE (Europe, Australia, and Far East)
      (2)  MSCI Combined Far East Free ex-Japan
      (3)  IFC Global Total Return Composite
      (4)  MSCI Europe
      (5)  MSCI World
      (6)  Philadelphia Gold and Silver
      (7)  MSCI Japan
      (8)  MSCI Emerging Markets Global Latin America
      (9)  Lipper Capital Appreciation
     (10)  NASDAQ Composite
 
     (11)  S&P 500
     (12)  Russell 2500
     (13)  NAREIT ex-healthcare
     (14)  Indata Balanced-Median
     (15)  J.P. Morgan Emerging Markets Bond
     (16)  Lehman Aggregate Bond
     (17)  J.P. Morgan Traded Global Bond
     (18)  CS First Boston High Yield
     (19)  Lehman 7 Yr. Municipal Bond
     (20)  Donaghue's Money Fund Report
</TABLE>
 
Past performance should not be construed as a guarantee of future performance.
Investment return and principal value will fluctuate so that investor's shares,
when redeemed, may be worth more or less than their original cost. Investments
in the Money Market and Municipal Money Market Portfolios are neither insured
nor guaranteed by the U.S. Government. There is no assurance that the Money
Market and Municipal Money Market Portfolios will be able to maintain a stable
net asset value of $1.00 per share. Please read the Portfolio's prospectus
carefully before you invest or send money.
 
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                                       3
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
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OVERVIEW
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THE ACTIVE COUNTRY ALLOCATION PORTFOLIO
 
COMPOSITION OF NET ASSETS (AT JUNE 30, 1996)
 
EDGAR REPRESENTATION OF DATA POINTS USED IN PRINTED GRAPHIC
 
<TABLE>
<S>               <C>
Australia              2.1%
Austria                0.5%
Brazil                 1.5%
France                 6.7%
Germany                9.8%
Hong Kong              6.8%
Indonesia              1.8%
Italy                  6.9%
Japan                 38.2%
Malaysia               0.1%
Netherlands            3.2%
Singapore              3.3%
Spain                  3.8%
Switzerland            2.8%
Thailand               2.2%
United Kingdom         7.9%
Other                  2.4%
</TABLE>
 
PERFORMANCE COMPARED TO THE MORGAN STANLEY
CAPITAL INTERNATIONAL (MSCI) EAFE INDEX(1)
- -----------------------------------------
 
<TABLE>
<CAPTION>
                                       TOTAL RETURNS(2)
                          -------------------------------------------
                                                     AVERAGE ANNUAL
                             YTD        ONE YEAR     SINCE INCEPTION
                          ----------  ------------  -----------------
<S>                       <C>         <C>           <C>
PORTFOLIO -- CLASS A....       8.17%       21.81%           9.39%
PORTFOLIO -- CLASS
B(3)....................       7.80          N/A             N/A
INDEX...................       4.52        13.28            9.96
 
<FN>
 
1. The MSCI EAFE Index is an unmanaged index of common stocks and includes
   Europe, Australia and the Far East (assumes dividends reinvested net of
   withholding taxes).
 
2. Total returns for the Portfolio reflect expenses waived and reimbursed, if
   applicable, by the Adviser. Without such waiver and reimbursement, total
   returns would be lower.
 
3. The Portfolio began offering Class B shares on January 2, 1996.
</TABLE>
 
PAST PERFORMANCE IS NOT PREDICTIVE OF FUTURE PERFORMANCE.
 
- ------------------------------------------------------------
 
THE COUNTRY SPECIFIC PERFORMANCE RESULTS PROVIDED ARE AS MEASURED BY THE MSCI
EAFE INDEX AND ARE FOR INFORMATIONAL PURPOSES ONLY AND SHOULD NOT BE CONSTRUED
AS A GUARANTEE OF THE PORTFOLIO'S FUTURE PERFORMANCE. PAST PERFORMANCE SHOWN IS
NOT PREDICTIVE OF FUTURE PERFORMANCE. INVESTMENT RETURN AND PRINCIPAL VALUE WILL
FLUCTUATE SO THAT AN INVESTOR'S SHARES, WHEN REDEEMED, MAY BE WORTH MORE OR LESS
THAN THEIR ORIGINAL COST. PLEASE SEE THE PROSPECTUS FOR A DESCRIPTION OF CERTAIN
RISK CONSIDERATIONS ASSOCIATED WITH INTERNATIONAL INVESTING.
 
The Active Country Allocation Portfolio invests in international equity markets,
with emphasis placed upon countries, rather than stock selection. This approach
reflects our belief that a diversified selection of securities representing
exposure to countries that we find attractive provides an effective way to
maximize the return and minimize the risk associated with global investing.
 
For the six month period ended June 30, 1996, the Portfolio had a total return
of 8.17% for the Class A shares and 7.80% for the Class B shares, as compared to
a total return of 4.52% for the Morgan Stanley Capital International (MSCI) EAFE
Index. The average annual total return for the twelve months ended June 30, 1996
and the period from inception on January 17, 1992 through June 30, 1996 was
21.81% and 9.39%, respectively, for the Class A shares, as compared to 13.28%
and 9.96%, respectively, for the Index.
 
World equity markets continued to move higher in the second quarter, with the
exception of the Pacific ex-Japan. In U.S. dollar terms, as measured by the
Morgan Stanley Capital International (MSCI) indices, regional returns for the
second quarter were: United States 4.3%, Europe 2.1%, Japan 0.6%, Pacific Ex-
Japan -0.7%, and the Emerging Markets 3.4%.
 
In local currency terms, the second quarter regional returns were: Europe 3.2%,
Japan 3.4%, Pacific Ex-Japan -0.1%, and the Emerging Markets 5.5%.
 
Year to date, in U.S. dollar terms, regional returns were United States 10.5%,
Europe 6.4%, Japan 1.1%, Pacific Ex-Japan 9.5%, and the Emerging Markets 3.1%.
 
Year to date, in local currency terms, regional returns were: Europe 10.1%,
Japan 7.5%, Pacific Ex-Japan 7.3%, and the Emerging Markets 7.8%.
 
For the second quarter, the Portfolio's outperformance relative to the MSCI
Europe, Australia and the Far East (EAFE) benchmark was driven by our
underweight (and country selection) in Europe and by our decision to maintain
the Japanese Yen and Deutschemark bloc currency hedges. On the negative side,
the Portfolio experienced a partial reversal of the first quarter gains
attributable to our overweight position in Asia.
 
During the quarter we maintained our neutral stance in Japan, made a few minor
adjustments to our country weights in Europe [i.e. brought the French weight to
neutral (+2%) and sold our position in Austria (-1%)], and lowered our exposure
to Singapore and Hong Kong, by a few percentage points
 
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Active Country Allocation Portfolio
 
                                       4
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
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OVERVIEW
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THE ACTIVE COUNTRY ALLOCATION PORTFOLIO (CONT.)
each, in late April. In early July, Singapore and, to a lesser extent, Hong Kong
began to look oversold in our valuation models, so we rotated out of Indonesia
and Malaysia and back into Hong Kong and Singapore (by 2% each.)
 
Going forward, our regional target weights relative to the EAFE benchmark remain
underweight Europe (42% vs. 50%), neutral in Japan (40%), and overweight Asia
(17% versus 10%) with 1% in cash.
 
Within Europe, the Portfolio is overweight the major markets of Germany, Italy,
and Spain and underweight the U.K., Switzerland, the Netherlands, and Sweden.
Issues that most concern investors about Europe are short-term interest rates,
economic recovery and the impact of a pullback in U.S. equities. With the
exception of the high yielding markets of Italy, Spain and Sweden, we think most
of the European interest rate cuts are behind us. In Germany, the economy is
strengthening (recent production and orders data are trending up) and the money
markets are discounting a tightening of German short rates. French rates (like
the French economy) are closely tied to Germany, and both the Netherlands and
Switzerland have already raised rates slightly. European monetary policy has
been very loose for some time however, which, in addition to weak currencies,
should have a positive lagged effect on economic growth.
 
With regard to U.S. equities, we believe their direction will be down, but a
sharp crack would have a more negative impact on the European bourses than a
slow downward grind. Historically, European markets have risen in five out of
the last eleven U.S. corrections and currently these markets have several
advantages vis a vis the U.S. European valuations are not as overextended as
their U.S. counterparts, they have more restructuring and shareholder value
potential ahead of them, and they are much earlier in the profit and economic
cycles than the U.S. In addition, their economies should benefit from the
stronger dollar and the stronger U.S. and Japanese economies.
 
For the quarter, Italy was a stellar performer (+13.4%) and it remains one of
the Portfolio's major overweights. The recent compromise on the Italian
supplementary budget package and the three-year budget plan was disappointing
and has dampened investor enthusiasm for the Italian financial markets. We agree
that the worker compensation compromise was disappointing and reduces hopes of
accelerating the disinflation process, but one could not assume that the vital
support of the far-left would come at no cost. Further, the government's budget
accomplishments in just two months remain noteworthy. The case for lower
interest rates is still intact, as are the attractiveness of Italian valuations.
Hence, we remain positive on the medium-term outlook for Italian equities,
although the recent budget wrangling and the bad press they've received may lead
to some underperformance in the near term.
 
The other large European overweight in the Portfolio is Germany. We continue to
like Germany based on a depreciating deutschemark boosting exports and economic
growth and a very positive backdrop of corporate restructuring, stock buybacks
and a new focus on shareholder value.
 
Asian equities cause us the most concern at this stage in the U.S. market cycle.
As noted above, we believe the U.S. market is headed for a decline and historic
correlations would tell us that this portends poorly for the Asian markets. On
the other hand, the weak yen has dampened inflationary pressures in these
markets and improving growth prospects in the U.S., Europe, and Japan are
boosting corporate earnings potential. We remain overweight in Asia, albeit a
few percentage points under our first quarter weight. Additionally, at the end
of June we rotated our Asian country weightings, selling the more fully valued
markets of Indonesia and Malaysia, and adding to Singapore -- as an oversold,
high quality market (the Switzerland of Asia) -- and to Hong Kong -- as a play
on an easing of the austerity program in China. In both Singapore and Hong Kong,
property issues make up large proportions of the market. In Hong Kong the
residential market has recovered strongly with prices rising by 10%-15% and we
expect commercial property values to recover as mainland Chinese set up business
locations in Hong Kong. In Singapore, government anti-speculation measures
announced in May resulted in heavy selling of residential property stocks and
banks, but we believe the market is oversold, and valuations of banks and office
property stocks are attractive.
 
During the quarter the Japanese market was very sensitive to speculation that
the Bank of Japan (BOJ) would raise interest rates. Over the past year,
liquidity has powered both the Japanese equity market's 50% plus rise and the
Japanese economic rebound. Recent focus by BOJ policy makers on a
"self-sustaining recovery" indicates that they clearly realize the importance of
these artificial fiscal and monetary boosts and we believe any tightening will
be either fiscal or monetary, but not both. If the BOJ does not tighten by
September, we doubt they will tighten until
 
- --------------------------------------------------------------------------------
                                             Active Country Allocation Portfolio
 
                                       5
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
 
OVERVIEW
- --------------------------------------------------------------------------------
THE ACTIVE COUNTRY ALLOCATION PORTFOLIO (CONT.)
mid-1997, as the fiscal package runs out at the end of this year and the
consumption tax will rise in April 1997 from 3% to 5%. The BOJ will not want to
give the economy a double punch. With regard to earnings and economic growth, on
which the next market leg up depends, we think earnings will be two to three
times the 6% consensus forecasts and that economic growth will be aided both by
the BOJ staying off the brakes and by strong private sector demand. Imports have
been up for the past six to nine months and car sales are strong. While we think
the abnormally high equity returns are behind us, we foresee a moderate uptrend
in the Japanese market, driven primarily by local investors.
 
With regard to currency hedging, we still believe in the long-term secular
strength of the dollar, but we allowed one third of both our deutschemark and
Japanese yen edges to roll off in early July. The dollar has made a big move in
the past twelve months and U.S. stock market weakness and the relative monetary
positions of the Fed, the BOJ and the Bundesbank may cloud the issues.
Specifically, with a German rate cut looking less likely and sporadic rumors of
a BOJ rate hike, the U.S. Fed's hesitation to raise U.S. rates in early July may
dampen U.S. dollar sentiment over the near term.
 
Going forward, we expect greater market volatility as earnings and interest
rates replace liquidity as the key market drivers and as we continue to see
rotation out of the U.S. market into Japan, Asia and the Emerging Markets.
 
Francine J. Bovich
PORTFOLIO MANAGER
 
Ann D. Thivierge
PORTFOLIO MANAGER
 
July 1996
 
- --------------------------------------------------------------------------------
Active Country Allocation Portfolio
 
                                       6
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
STATEMENT OF NET ASSETS (UNAUDITED)
JUNE 30, 1996
- --------------------------------------------------------------------------------
 
THE ACTIVE COUNTRY ALLOCATION PORTFOLIO
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>
                                                                  VALUE
   SHARES                                                         (000)
- ------------------------------------------------------------
<C>             <S>                                             <C>
COMMON STOCKS (95.8%)
  AUSTRALIA (1.9%)
       16,300   Amcor Ltd.....................................  $      111
       20,600   Australian National Industries Ltd............          17
       26,100   Boral Ltd. (Bonus Shares Plan)................          68
        6,500   Brambles Industries Ltd.......................          90
       45,800   Broken Hill Proprietary Co., Ltd..............         632
       14,300   Burns, Philp & Co., Ltd.......................          27
       12,100   Coca-Cola Amatil Ltd..........................         134
       32,900   Coles Myer Ltd................................         119
        7,700   CRA Ltd.......................................         118
       26,300   CSR Ltd.......................................          93
       59,100   Fosters Brewing Corp..........................         102
       11,800   Gio Australia Holdings Ltd....................          29
       31,100   Gold Mines of Kalgoorlie Ltd..................          34
       32,700   Goodman Fielder Ltd...........................          33
        8,337   Highlands Gold Ltd............................           4
        8,400   ICI Australia Ltd.............................          74
        6,900   Lend Lease Corp., Ltd.........................         106
       40,700   MIM Holdings Ltd..............................          52
       33,700   National Australia Bank Ltd...................         311
        7,900   Newcrest Mining Ltd...........................          32
       46,800   News Corp., Ltd...............................         265
       17,800   Normandy Mining Ltd...........................          28
       18,500   North Ltd.....................................          53
       26,700   Pacific Dunlop Ltd............................          60
       25,300   Pioneer International Ltd.....................          74
        5,700   Renison Goldfields Consolidated Ltd...........          28
       16,100   Santos Ltd....................................          56
        3,500   Sons of Gwalia Ltd............................          25
       19,300   Southcorp Holdings Ltd........................          48
       10,500   TABCORP Holdings Ltd..........................          47
     (a)8,600   TNT Ltd.......................................          10
       25,700   Western Mining Corp. Holdings Ltd.............         184
       46,000   Westpac Banking Corp..........................         204
                                                                ----------
                                                                     3,268
                                                                ----------
  AUSTRIA (0.5%)
           80   Austria Mikro Systeme International AG........           7
       (a)110   Austrian Airlines AG..........................          17
        1,626   Bank Austria AG...............................         131
          380   Bank Austria AG-Participation
                  Certitificates..............................          13
          230   BAU Holding AG................................          14
          350   Boehler-Uddeholm AG...........................          27
           80   BWT AG........................................          10
        1,120   Creditanstalt-Bankverein......................          74
          440   Ea-Generali AG................................         131
          440   Flughafen Wien AG.............................          30
          130   Lenzing AG....................................           8
       (a)500   Mayr-Melnhof Karton AG........................          22
        1,310   Oest Elektrizatswirts AG, Class A.............         100
          510   OMV AG........................................          52
          840   Radex-Heraklith Industriebetelligungs AG......          26
       (a)110   Universale Bau AG.............................           5
 
<CAPTION>
                                                                  VALUE
   SHARES                                                         (000)
<C>             <S>                                             <C>
- ------------------------------------------------------------
          760   Va Technologie AG.............................  $       93
          200   Wienerberger Baustoff AG......................          40
                                                                ----------
                                                                       800
                                                                ----------
  BRAZIL (0.4%)
   (a)495,000   Cia Paulista de Forca E Luz...................          45
    1,624,000   Cia Siderurgica Nacional......................          41
    1,783,000   Eletrobras....................................         480
   (d)425,000   Light.........................................          30
      354,000   Light-Servicos de Eletricidade S.A............          95
                                                                ----------
                                                                       691
                                                                ----------
  FRANCE (6.6%)
        1,050   Accor S.A.....................................         147
        4,650   Alcatel Alsthom...............................         406
        6,192   AXA S.A.......................................         339
        6,250   Banque Nationale de Paris.....................         220
        1,150   BIC Corp......................................         163
        1,125   Bouygues......................................         126
          800   Canal Plus....................................         196
        1,250   Carrefour S.A.................................         701
        3,100   Casino........................................         128
       (a)200   Chargeurs S.A.................................           9
          811   Cie Bancaire S.A..............................          92
        3,150   Cie de Saint Gobain...........................         422
        5,600   Cie de Suez, S.A..............................         205
        3,411   Cie Financiere de Paribas S.A., Class A.......         202
        3,600   Cie Generale des Eaux.........................         403
        9,400   Elf Aquitaine.................................         693
        1,250   Eridania Beghin-Say S.A.......................         196
        2,600   Groupe Danone.................................         394
        2,100   Havas S.A.....................................         172
        3,715   Lafarge S.A...................................         225
        2,350   L'Air Liquide.................................         416
          980   Legrand.......................................         175
        2,350   L'Oreal.......................................         782
        3,150   LVMH..........................................         748
        2,525   Lyonnaise des Eaux............................         242
        5,350   Michelin CGDE, Class B........................         262
       (a)200   Pathe S.A.....................................          47
        2,150   Pernod Ricard.................................         138
        1,950   Peugeot S.A...................................         261
          780   Pinault-Printemps S.A.........................         273
          670   Promodes......................................         193
       11,397   Rhone-Poulenc S.A., Class A...................         300
          130   SAGEM.........................................          78
          360   Saint Louis...................................          96
        3,415   Sanofi........................................         256
        4,900   Schneider S.A.................................         257
        (a)62   Simco S.A.....................................           5
     (a)1,113   Simco S.A. (RFD)..............................         103
          150   Societe Eurafrance S.A........................          58
        2,620   Societe Generale..............................         289
          250   Sodexho S.A...................................         111
        4,500   Thomson CSF...................................         127
        7,750   Total S.A., Class B...........................         576
</TABLE>
 
The accompanying notes are an integral part of the financial statements. (Pages
                                    182-188)
 
- --------------------------------------------------------------------------------
                                             Active Country Allocation Portfolio
 
                                       7
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
STATEMENT OF NET ASSETS (UNAUDITED)
JUNE 30, 1996
- --------------------------------------------------------------------------------
 
THE ACTIVE COUNTRY ALLOCATION PORTFOLIO (CONT.)
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>
                                                                  VALUE
   SHARES                                                         (000)
- ------------------------------------------------------------
<C>             <S>                                             <C>
</TABLE>
 
  FRANCE (CONT.)
<TABLE>
<C>             <S>                                             <C>
       10,750   Union des Assurances de Paris.................  $      219
     (a)9,750   Usinor Sacilor................................         141
                                                                ----------
                                                                    11,592
                                                                ----------
  GERMANY (9.5%)
        1,900   AGIV AG.......................................          36
        1,050   Allianz AG....................................       1,828
       (a)200   AMB Aachener & Muenchener Beteiligungs AG.....         145
          150   Asko Deutsche Kaufhaus AG.....................         111
        2,850   BASF AG.......................................         813
       32,000   Bayer AG......................................       1,127
       10,150   Bayerische Hypotheken Bank AG.................         247
       10,950   Bayerische Vereinsbank AG.....................         307
       (a)200   Beiersdorf AG.................................         197
       (a)200   Bilfinger & Berger AG.........................          84
          250   Brau Und Brunnen AG...........................          26
       (a)800   Bremer Vulkan Verbund AG......................           3
          100   CKAG Colonia Konz AG..........................          80
        5,000   Continental AG................................          81
     (a)2,450   Daimler-Benz AG...............................       1,316
          450   Degussa AG....................................         153
       23,300   Deutsche Bank AG..............................       1,105
       20,650   Dresdner Bank AG..............................         519
          250   Heidelberger Zement AG........................         172
          400   Hochtief AG...................................         179
          550   Karstadt AG...................................         219
          400   Kaufhof Holding AG............................         151
     (a)2,550   Kloeckner-Humboldt-Deutz AG...................           9
          500   Linde AG......................................         325
       (a)150   Linotype-Hell AG..............................           7
        1,600   Lufthansa AG..................................         227
          500   MAN AG........................................         125
        1,700   Mannesmann AG.................................         586
        8,350   Merck KGAA....................................         316
          359   Muenchener Rueck AG (Registered)..............         734
          900   Preussag AG...................................         227
       15,500   RWE AG........................................         604
        2,900   SAP AG........................................         428
        3,500   Schering AG...................................         254
       28,000   Siemens AG....................................       1,503
       (a)100   STRABAG AG....................................           9
        1,650   Thyssen AG....................................         302
       22,850   VEBA AG.......................................       1,216
     (a)1,306   Viag AG.......................................         521
        1,300   Volkswagen AG.................................         485
                                                                ----------
                                                                    16,777
                                                                ----------
  HONG KONG (6.8%)
    (a)48,000   Applied International Holdings................           4
       54,633   Bank of East Asia Ltd.........................         200
      205,000   Cathay Pacific Airways Ltd....................         376
      154,000   Cheung Kong Holdings Ltd......................       1,109
      138,500   China Light & Power Co., Ltd..................         628
      112,000   Chinese Estates Holdings......................         100
       55,000   Dickson Concepts International Ltd............          70
<CAPTION>
                                                                  VALUE
   SHARES                                                         (000)
<C>             <S>                                             <C>
- ------------------------------------------------------------
       44,000   Giordano Holdings Ltd.........................  $       43
       87,000   Hang Lung Development Co......................         164
      133,900   Hang Seng Bank Ltd............................       1,349
       13,200   Hong Kong Aircraft Engineering Co., Ltd.......          40
      135,400   Hong Kong & China Gas Co., Ltd................         216
       89,500   Hong Kong & Shanghai Hotel Ltd................         153
      755,687   Hong Kong Telecommunications Ltd..............       1,357
      305,198   Hopewell Holdings Ltd.........................         166
      246,000   Hutchison Whampoa Ltd.........................       1,548
       76,000   Hysan Development Co., Ltd....................         233
       28,000   Johnson Electric Holdings Ltd.................          63
        3,700   Melco International Development Ltd...........           1
       41,000   Miramar Hotel & Investment Ltd................          91
      107,301   New World Development Co., Ltd................         498
       99,000   Oriental Press Group Ltd......................          53
       27,500   Peregrine Investments Ltd.....................          40
       76,340   Shangri-La Asia Ltd...........................         107
      114,000   Shun Tak Holdings Ltd.........................          70
      130,000   South China Morning Post Holdings.............          89
       72,000   Stelux Holdings Ltd...........................          16
      160,000   Sun Hung Kai Properties Ltd...................       1,617
      109,500   Swire Pacific Ltd., Class A...................         937
       30,000   Television Broadcasts Ltd.....................         113
      152,000   Wharf Holdings Ltd............................         544
       10,660   Wing Lung Bank Ltd............................          62
       24,000   Winsor Industrial Corp........................          20
                                                                ----------
                                                                    12,077
                                                                ----------
  INDONESIA (1.8%)
   (d)127,832   Bank Dagang Nasional (Foreign)................         107
   (d)475,556   Barito Pacific Timber (Foreign)...............         312
   (d)315,754   Gadjah Tunggal (Foreign)......................         156
   (d)201,954   Hanajaya Mandala Sampoerna (Foreign)..........       2,299
   (d)157,285   Jakarta International Hotel & Development
                  (Foreign)...................................         135
  (a,d)21,242   Matahari Putra Prima (Foreign)................          39
       48,365   Sinar Mas Agro (Foreign)......................          35
    (d)52,934   United Tractors (Foreign).....................          84
                                                                ----------
                                                                     3,167
                                                                ----------
  ITALY (6.8%)
       57,420   Assicurazioni Generali S.p.A..................       1,326
      116,700   Banca Commerciale.............................         235
       38,300   Banco Ambrosiano Ven..........................         103
       17,100   Benetton S.p.A................................         221
       11,500   Cartiere Burgo................................          63
      141,000   Credito Italiano..............................         165
       52,000   Edison S.p.A..................................         314
      581,000   ENI S.p.A.....................................       2,902
     (a)7,000   Falck.........................................          26
      244,500   Fiat S.p.A....................................         820
       60,800   Fiat S.p.A. Di Risp (NCS).....................         104
    (a)34,500   Fidis.........................................          95
    (a)21,500   Impregilo S.p.A...............................          23
       44,200   Instituto Mobiliare Italiano..................         370
</TABLE>
 
The accompanying notes are an integral part of the financial statements. (Pages
                                    182-188)
 
- --------------------------------------------------------------------------------
Active Country Allocation Portfolio
 
                                       8
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
STATEMENT OF NET ASSETS (UNAUDITED)
JUNE 30, 1996
- --------------------------------------------------------------------------------
 
THE ACTIVE COUNTRY ALLOCATION PORTFOLIO (CONT.)
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>
                                                                  VALUE
   SHARES                                                         (000)
- ------------------------------------------------------------
<C>             <S>                                             <C>
</TABLE>
 
  ITALY (CONT.)
<TABLE>
<C>             <S>                                             <C>
       61,500   Istituto Bancario San Paolo...................  $      398
      301,900   Istituto Nazionale delle Assicurazioni........         451
       11,300   Italcementi...................................          36
       20,350   Italcementi Di Risp...........................         164
       48,800   Italgas.......................................         183
       33,900   Magneti Marelli S.p.A.........................          48
       37,500   Mediobanca S.p.A..............................         238
   (a)325,100   Montedison S.p.A..............................         189
    (a)76,900   Montedison S.p.A. Di Risp (NCS)...............          46
   (a)270,750   Olivetti S.p.A................................         146
    (a)64,100   Parmalat Finanziaria S.p.A....................          86
      133,000   Pirelli S.p.A.................................         223
       22,015   R.A.S. S.p.A..................................         228
       19,000   Rinascente....................................         136
     (a)2,200   Saffa S.p.A...................................           5
        9,400   SAI...........................................          90
       10,900   Sasib.........................................          44
       21,000   Sirti S.p.A...................................         135
       48,000   SNIA BPD S.p.A................................          54
      483,900   Telecom Italia Mobile S.p.A...................       1,083
      478,000   Telecom Italia S.p.A..........................       1,029
      125,500   Telecom Italia S.p.A. Di Risp (NCS)...........         217
                                                                ----------
                                                                    11,996
                                                                ----------
  JAPAN (38.2%)
        4,400   Advantest Corp................................         175
       48,000   Ajinomoto Co..................................         575
    (a)24,000   Aoki Corp.....................................          89
        2,000   Aoyama Trading Co.............................          53
       78,000   Asahi Bank Ltd................................         906
       24,000   Asahi Breweries Ltd...........................         281
       73,000   Asahi Chemical Industry Co., Ltd..............         522
       69,000   Asahi Glass Co., Ltd..........................         827
   (a)148,000   Bank of Tokyo-Mitsubishi......................       3,439
       24,000   Bridgestone Co................................         459
       36,000   Canon, Inc....................................         751
       15,000   Casio Computer Co.............................         144
       39,000   Chiba Bank....................................         345
       10,000   Chiyoda Corp..................................         119
       24,000   Chugai Pharmaceuticals Co.....................         235
       48,000   Dai Nippon Printing Co., Ltd..................         931
       33,000   Daiei, Inc....................................         398
       24,000   Daikin Industries Ltd.........................         263
       24,000   Daiwa House Industry..........................         373
       48,000   Daiwa Securities Co., Ltd.....................         619
       16,000   Ebara Corp....................................         256
       10,300   Fanuc.........................................         411
       92,000   Fuji Bank.....................................       1,986
       24,000   Fuji Photo Film Ltd...........................         760
       78,000   Fujitsu Ltd...................................         713
       39,000   Furukawa Electric Co..........................         234
    (a)48,000   Hankyu Corp...................................         282
       24,000   Hazama Corp...................................         105
      121,000   Hitachi Ltd...................................       1,129
       38,000   Honda Motor Co................................         987
       76,000   Industrial Bank of Japan......................       1,891
<CAPTION>
                                                                  VALUE
   SHARES                                                         (000)
<C>             <S>                                             <C>
- ------------------------------------------------------------
       16,000   Ito-Yokado Co., Ltd...........................  $      967
    (a)97,000   Japan Airlines Co.............................         787
       61,000   Japan Energy Corp.............................         227
       26,000   Joyo Bank.....................................         198
       19,000   Jusco Co., Ltd................................         624
       48,000   Kajima Corp...................................         496
       25,800   Kansai Electric Power Co......................         592
       44,000   Kao Corp......................................         596
      124,000   Kawasaki Steel Corp...........................         448
       72,220   Kinki Nippon Railway..........................         521
       48,000   Kirin Brewery Co., Ltd........................         588
       48,000   Komatsu Ltd...................................         474
       73,000   Kubota Corp...................................         483
       48,000   Kumagai Gumi Co...............................         193
       24,000   Kyowa Hakko Kogyo.............................         231
       73,000   Marubeni Corp.................................         401
       15,000   Marui Co., Ltd................................         333
       73,000   Matsushita Electric Industries Ltd............       1,362
       73,000   Mitsubishi Chemical Corp......................         338
       67,000   Mitsubishi Corp...............................         883
       85,000   Mitsubishi Electric Corp......................         594
       52,000   Mitsubishi Estate Co., Ltd....................         718
      132,000   Mitsubishi Heavy Industries Ltd...............       1,151
       49,000   Mitsubishi Materials Corp.....................         267
       43,000   Mitsubishi Trust & Banking Co.................         728
       73,000   Mitsui & Co...................................         663
    (a)48,000   Mitsui Engineering & Shipbuilding.............         147
       39,000   Mitsui Fudosan Co.............................         528
       27,000   Mitsukoshi Ltd................................         289
       10,000   Murata Manufacturing Co., Ltd.................         380
       58,000   NEC Corp......................................         631
       48,000   New Oji Paper Co., Ltd........................         415
       24,000   NGK Insulators................................         270
       24,000   Nippon Denso Co., Ltd.........................         522
       47,000   Nippon Express Co., Ltd.......................         460
       24,000   Nippon Fire & Marine Insurance Co.............         157
       23,000   Nippon Light Metal............................         131
       24,000   Nippon Meat Packers, Inc......................         342
       73,000   Nippon Oil Co.................................         496
      270,000   Nippon Steel Co...............................         929
       73,000   Nippon Yusen..................................         423
       92,000   Nissan Motor Co...............................         819
   (a)141,000   NKK Corp......................................         428
       73,000   Nomura Securities Co., Ltd....................       1,429
       48,470   Odakyu Electric Railway Corp..................         327
      107,000   Osaka Gas Co..................................         392
       24,000   Penta-Ocean Construction......................         162
        8,000   Pioneer Electric Corp.........................         191
        4,000   Rohm Co.......................................         265
      120,000   Sakura Bank...................................       1,339
       24,000   Sankyo Co., Ltd...............................         623
       73,000   Sanyo Electric Co., Ltd.......................         447
        5,000   Secom Co., Ltd................................         331
        3,500   Sega Enterprises..............................         164
       24,000   Sekisui House Co., Ltd........................         274
       48,000   Sharp Corp....................................         843
        7,000   Shimano, Inc..................................         125
</TABLE>
 
The accompanying notes are an integral part of the financial statements. (Pages
                                    182-188)
 
- --------------------------------------------------------------------------------
                                             Active Country Allocation Portfolio
 
                                       9
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
STATEMENT OF NET ASSETS (UNAUDITED)
JUNE 30, 1996
- --------------------------------------------------------------------------------
 
THE ACTIVE COUNTRY ALLOCATION PORTFOLIO (CONT.)
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>
                                                                  VALUE
   SHARES                                                         (000)
- ------------------------------------------------------------
<C>             <S>                                             <C>
</TABLE>
 
  JAPAN (CONT.)
<TABLE>
<C>             <S>                                             <C>
       34,000   Shimizu Corp..................................  $      376
       10,550   Shin-Etsu Chemical Co.........................         203
       11,000   Shiseido Co., Ltd.............................         141
       33,000   Shizuoka Bank.................................         426
    (a)48,000   Showa Denko...................................         148
       11,000   Sony Corp.....................................         725
      114,000   Sumitomo Bank.................................       2,211
       25,000   Sumitomo Osaka Cement.........................         122
       97,000   Sumitomo Chemical Co..........................         464
       48,000   Sumitomo Corp.................................         428
       32,000   Sumitomo Electric.............................         460
       10,000   Sumitomo Forestry Co., Ltd....................         149
       23,000   Sumitomo Metal & Mining.......................         200
      170,000   Sumitomo Metal Industries.....................         522
       48,000   Taisei Corp., Ltd.............................         341
       48,000   Takeda Chemical...............................         852
       48,000   Teijin Ltd....................................         261
       48,000   Tobu Railway Co...............................         316
       17,400   Tohoku Electric Power.........................         390
       75,000   Tokai Bank....................................         974
       73,000   Tokio Marine & Fire Insurance Co..............         975
       11,000   Tokyo Dome Corp...............................         222
       44,900   Tokyo Electric Power Co.......................       1,142
        7,000   Tokyo Electron Ltd............................         204
       70,000   Tokyo Gas Co..................................         256
       48,000   Tokyu Corp....................................         367
       33,000   Toppan Printing Co., Ltd......................         483
       73,000   Toray Industries, Inc.........................         505
       24,000   Toto Ltd......................................         362
       48,000   Toyoba Co.....................................         180
      112,000   Toyota Motor Corp.............................       2,807
       48,000   Ube Industries Ltd............................         183
       48,000   Yamaichi Securities Co........................         330
       48,000   Yasuda Trust & Banking Co.....................         304
                                                                ----------
                                                                    67,429
                                                                ----------
  MALAYSIA (0.1%)
        6,000   Commerce Asset Holding Bhd....................          37
        4,000   Hong Leong Industries Bhd.....................          19
       12,000   Land & General Bhd............................          30
        6,000   Malaysian Mining Corp. Bhd....................           6
        3,000   Malaysian Oxygen Bhd..........................          16
       26,000   Metroplex Bhd.................................          28
       16,500   YTL Corp., Bhd................................          86
                                                                ----------
                                                                       222
                                                                ----------
  NETHERLANDS (3.2%)
        7,648   ABN Amro Holdings N.V.........................         411
        1,850   Akzo Nobel N.V................................         222
       15,600   Elsevier N.V..................................         237
          950   Heineken N.V..................................         213
       16,595   ING Groep N.V.................................         496
        2,082   KLM Royal Dutch Airlines N.V..................          67
        3,135   Koninklijke Ahold N.V.........................         170
          750   Koninklijke Hoogovens N.V.....................          28
        2,500   Koninklijke KNP BT N.V........................          60
<CAPTION>
                                                                  VALUE
   SHARES                                                         (000)
<C>             <S>                                             <C>
- ------------------------------------------------------------
       21,194   Koninklijke PTT Nederland N.V.................  $      803
          550   Nedlloyd Groep N.V............................          13
        7,900   Philips Electronics N.V.......................         257
       12,700   Royal Dutch Petroleum Co......................       1,964
          721   Stork N.V.....................................          21
        3,800   Unilever N.V..................................         551
        1,668   Wolters Kluwer N.V............................         190
                                                                ----------
                                                                     5,703
                                                                ----------
  SINGAPORE (3.3%)
       24,000   Amcol Holdings Ltd............................          53
    (a)60,000   City Developments Ltd.........................         468
       14,000   Cycle & Carriage Ltd..........................         150
       72,000   DBS Land Ltd..................................         247
       39,000   Development Bank of Singapore Ltd.
                  (Foreign)...................................         486
       18,000   First Capital Corp., Ltd......................          45
       23,800   Fraser & Neave Ltd............................         246
       24,000   Hai Sun Hup Group Ltd.........................          18
    (a)22,000   Hotel Properties Ltd..........................          39
        9,000   Inchcape Bhd..................................          29
       10,000   Jurong Shipyard Ltd...........................          51
       41,000   Keppel Corp., Ltd.............................         343
       31,000   Natsteel Ltd..................................          62
       37,000   Neptune Orient Lines Ltd. (Foreign)...........          39
       55,000   Oversea-Chinese Banking Corp. (Foreign).......         643
       10,000   Overseas Union Enterprise Ltd.................          55
       24,000   Parkway Holdings Ltd..........................          71
        3,000   Robinson & Co., Ltd...........................          13
        9,000   Shangri-La Hotel Ltd..........................          32
       43,000   Singapore Airlines Ltd. (Foreign).............         454
       21,800   Singapore Press Holdings (Foreign)............         428
       39,000   Singapore Technologies Industrial Corp........         103
      464,000   Singapore Telecommunications..................       1,236
       20,000   Straits Trading Co., Ltd......................          52
      103,000   United Industrial Corp. Ltd...................         105
       35,000   United Overseas Bank Ltd. (Foreign)...........         335
                                                                ----------
                                                                     5,803
                                                                ----------
  SPAIN (3.8%)
          735   Acerinox S.A..................................          77
        7,900   Argentaria S.A................................         345
       12,733   Autopistas (ACESA)............................         148
       14,100   Banco Bilbao Vizcaya S.A......................         572
       10,300   Banco Central Hispano Americano S.A...........         210
       10,000   Banco Santander S.A...........................         467
        1,000   Corporacion Financiera Alba...................          83
        3,600   Dragados y Construccion S.A...................          48
        3,050   Ebro Agricolas S.A............................          35
        1,350   ENCE S.A......................................          19
       16,000   Endesa S.A....................................         999
    (a)10,600   Ercros S.A....................................           6
     (a)4,900   Ercros S.A. (New).............................           3
        1,100   FASA Renault S.A..............................          24
</TABLE>
 
The accompanying notes are an integral part of the financial statements. (Pages
                                    182-188)
 
- --------------------------------------------------------------------------------
Active Country Allocation Portfolio
 
                                       10
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
STATEMENT OF NET ASSETS (UNAUDITED)
JUNE 30, 1996
- --------------------------------------------------------------------------------
 
THE ACTIVE COUNTRY ALLOCATION PORTFOLIO (CONT.)
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>
                                                                  VALUE
   SHARES                                                         (000)
- ------------------------------------------------------------
<C>             <S>                                             <C>
</TABLE>
 
  SPAIN (CONT.)
<TABLE>
<C>             <S>                                             <C>
          950   Fomento Construction y Contractas S.A.........  $       79
        2,350   Gas Natural SDG S.A...........................         494
        2,700   General de Aguas de Barcelona S.A.............         100
       58,300   Iberdrola S.A.................................         599
        1,700   Mapfre Corporacion............................          87
          145   Mapfre Corporacion............................           6
        1,400   Metro Vacesa..................................          48
          500   Portland Valderrivas S.A......................          33
       18,800   Repsol S.A....................................         655
        2,300   Tabacalera S.A., Class A......................         116
       58,900   Telefonica de Espana S.A......................       1,087
       18,300   Union Electrica Fenosa S.A....................         118
        3,250   Uralita S.A...................................          30
        2,700   Vallehermoso S.A..............................          53
        1,450   Viscofan Envolturas Celulosicas S.A...........          23
          540   Zardoya Otis S.A..............................          52
                                                                ----------
                                                                     6,616
                                                                ----------
  SWITZERLAND (2.8%)
          100   Adia S.A. (Bearer)............................          25
           25   Alusuisse-Lonza Holdings Ltd. (Bearer)........          21
          100   Alusuisse-Lonza Holdings Ltd. (Registered)....          83
          140   BBC Brown Boveri AG (Bearer)..................         173
           70   Ciba-Geigy AG (Bearer)........................          85
          400   Ciba-Geigy AG (Registered)....................         488
        2,945   CS Holding AG (Registered)....................         280
           10   Georg Fischer AG (Bearer).....................          12
           99   Holderbank AG (Bearer)........................          79
           90   Merkur Holding AG (Registered)................          19
          653   Nestle S.A. (Registered)......................         747
           26   Roche Holding AG (Bearer).....................         324
          112   Roche Holding AG (Registered).................         856
          395   Sandoz AG (Registered)........................         452
           31   SGS Surveillance (Bearer).....................          74
        (a)60   SMH AG (Bearer)...............................          42
       (a)250   SMH AG (Registered)...........................          39
           30   Sulzer AG (Registered)........................          19
        (a)50   SwissAir (Registered).........................          48
        1,280   Swiss Bank Corp. (Registered).................         253
          200   Swiss Reinsurance (Registered)................         205
          340   Union Bank of Switzerland (Bearer)............         333
          362   Union Bank of Switzerland (Registered)........          77
          750   Zuerich Versicherung (Registered).............         205
                                                                ----------
                                                                     4,939
                                                                ----------
  THAILAND (2.2%)
       21,500   Advanced Information Services PCL (Foreign)...         318
    (d)32,400   Bangchak Petroleum Co., Ltd. (Foreign)........          42
   (d)126,809   Bangkok Metropolitan Bank Ltd.................          90
       11,900   Bank of Ayudhya Ltd. (Foreign)................          66
<CAPTION>
                                                                  VALUE
   SHARES                                                         (000)
<C>             <S>                                             <C>
- ------------------------------------------------------------
       11,800   CMIC Finance & Securities Co., Ltd............  $       37
        3,600   CP Feedmill Co., Ltd. (Foreign)...............          21
       23,200   Dhana Siam Finance & Securities Co., Ltd......         129
       27,400   General Finance & Securities Co., Ltd.
                  (Foreign)...................................          99
    (d)22,900   Italian Thai Development Co., Ltd.............         213
    (d)20,700   Jasmine International Co., Ltd. (Foreign).....          74
      127,500   Krung Thai Bank Ltd. (Foreign)................         598
    (a)19,600   National Finance & Securities Co., Ltd........          87
    (d)19,200   National Petrochemical........................          28
     (d)9,900   One Holding Co., Ltd. (Foreign)...............          23
       16,900   Phatra Thanakit Co., Ltd. (Foreign)...........         118
       28,400   PTT Exploration & Production Co., Ltd
                  (Foreign)...................................         416
    (d)23,000   Quality House Public Co., Ltd.................          48
    (a)46,900   Sahaviriya Steel Industry (Foreign)...........          30
       12,700   Shinawatra Computer Co., Ltd (Foreign)........         275
    (d)21,700   Shinawatra Satellite Co., Ltd. (Foreign)......          39
        3,600   Siam Cement Co., Ltd. (Foreign)...............         177
       74,600   Siam City Bank Ltd. (Foreign).................          80
        3,500   Siam City Cement Co., Ltd. (Foreign)..........          44
 (a,d)204,100   TelecomAsia Corp., Ltd. (Foreign).............         434
    (d)41,600   Thai Airways International Co., Ltd.
                  (Foreign)...................................          88
       26,500   Thai Military Bank Ltd. (Foreign).............         104
    (d)21,500   United Communications Industry (Foreign)......         288
                                                                ----------
                                                                     3,966
                                                                ----------
  UNITED KINGDOM (7.9%)
       23,100   Abbey National plc............................         194
       24,600   Argyll Group plc..............................         133
       17,700   Arjo Wiggins Appleton plc.....................          48
        8,400   Associated British Foods plc..................          51
       28,274   Barclays plc..................................         340
       17,800   Bass plc......................................         224
       52,700   BAT Industries plc............................         410
       11,300   BICC plc......................................          54
       21,346   Blue Circle Industries plc....................         119
       10,200   BOC Group plc.................................         146
       20,900   Boots Co. plc.................................         188
       14,000   BPB Industries plc............................          69
        8,367   British Aerospace plc.........................         127
       19,500   British Airways plc...........................         168
       69,300   British Gas plc...............................         194
       94,353   British Petroleum Co. plc.....................         827
       26,100   British Sky Broadcasting plc..................         178
       36,000   British Steel plc.............................          91
       91,400   British Telecommunications plc................         491
       72,505   BTR plc.......................................         286
        4,846   Burmah Castrol plc............................          77
       42,300   Cable & Wireless plc..........................         280
</TABLE>
 
The accompanying notes are an integral part of the financial statements. (Pages
                                    182-188)
 
- --------------------------------------------------------------------------------
                                             Active Country Allocation Portfolio
 
                                       11
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
STATEMENT OF NET ASSETS (UNAUDITED)
JUNE 30, 1996
- --------------------------------------------------------------------------------
 
THE ACTIVE COUNTRY ALLOCATION PORTFOLIO (CONT.)
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>
                                                                  VALUE
   SHARES                                                         (000)
- ------------------------------------------------------------
<C>             <S>                                             <C>
</TABLE>
 
  UNITED KINGDOM (CONT.)
<TABLE>
<C>             <S>                                             <C>
       19,394   Cadbury Schweppes plc.........................  $      153
       13,100   Caradon plc...................................          44
       14,300   Coats Viyella plc.............................          38
        8,592   Commercial Union plc..........................          77
        8,300   Courtaulds plc................................          55
        2,900   De La Rue Co. plc.............................          27
        8,400   General Accident plc..........................          85
       49,300   General Electric plc..........................         266
       54,300   Glaxo Wellcome plc............................         731
        9,032   GKN plc.......................................         139
       11,455   Granada Group plc.............................         153
       45,900   Grand Metropolitan plc........................         304
       20,300   Great Universal Stores plc....................         206
       27,600   Guardian Royal Exchange plc...................         106
       34,600   Guinness plc..................................         252
       99,395   Hanson plc....................................         279
       20,300   Harrisons & Crosfields plc....................          43
       33,945   HSBC Holdings plc.............................         520
       14,100   Imperial Chemical Industries plc..............         172
       27,383   Ladbroke Group plc............................          77
       12,500   Land Securities plc...........................         121
       12,900   Lasmo plc.....................................          35
       87,500   Lloyds TSB Group plc..........................         428
       14,616   Lonrho plc....................................          42
       57,800   Marks and Spencer plc.........................         422
        9,500   MEPC plc......................................          60
       23,000   National Power plc............................         186
       12,300   Peninsular & Oriental Steam Navigation Co.....          92
       23,900   Pilkington plc................................          67
       43,021   Prudential Corp. plc..........................         271
       15,400   Rank Organization plc.........................         119
       13,427   Redland plc...................................          84
       11,200   Reed International plc........................         187
       30,300   Reuters Holdings plc..........................         367
        9,500   Rexam plc.....................................          50
        5,400   RMC Group plc.................................          85
        8,400   Royal Bank of Scotland Group plc..............          64
       14,085   Royal Insurance Holdings plc..................          87
       20,299   RTZ Corp. plc.................................         301
       24,446   Sainsbury (J) plc.............................         144
        4,000   Schroders plc.................................          84
       15,000   Scottish Power plc............................          71
       31,000   Sears plc.....................................          48
        4,700   Sedgwick Group plc............................          10
        7,100   Slough Estates plc............................          24
       40,710   SmithKline Beecham plc, Class A...............         435
        4,750   Southern Electric plc.........................          53
       22,497   Tarmac plc....................................          39
       11,900   Taylor Woodrow plc............................          29
       32,160   Tesco plc.....................................         147
       11,300   Thames Water plc..............................         100
        9,050   THORN EMI plc.................................         252
        8,340   TI Group plc..................................          70
       12,100   Unilever plc..................................         241
       10,700   United Utilities plc..........................          90
<CAPTION>
                                                                  VALUE
   SHARES                                                         (000)
<C>             <S>                                             <C>
- ------------------------------------------------------------
       59,900   Vodafone Group plc............................  $      223
       14,500   Zeneca Group plc..............................         321
                                                                ----------
                                                                    13,871
                                                                ----------
TOTAL COMMON STOCKS (Cost $158,375)...........................     168,917
                                                                ----------
PREFERRED STOCKS (1.6%)
  AUSTRALIA (0.1%)
       23,000   News Corp., Ltd...............................         112
                                                                ----------
  BRAZIL (1.1%)
       22,666   Aracruz Celelose S.A., Class B................          42
   19,179,873   Banco Bradesco S.A............................         157
    1,922,000   Banco do Brasil...............................          15
    1,118,000   Banco do Estado Sao Paulo.....................           4
      165,663   Brahma........................................          99
      847,000   Ceval Alimentos S.A...........................           9
    1,064,000   Cia Brasileira de Petroleo Ipiranga...........          15
    2,861,500   Cia Energetica de Minas Gerais................          76
       71,000   Cia Energetica de Sao Paulo...................           2
    1,818,000   Cia Siderurgica de Tubarao....................          29
    1,020,000   Eletrobras, Class B...........................         292
       21,500   Industrias Klabin de Papel e Celulose S.A.....          27
      222,000   Itaubanco.....................................          90
       81,000   Itausa Investimentos Itau S.A.................          62
    2,044,000   Petrobras.....................................         252
       20,000   Sadia Concordia...............................          14
    7,618,000   Telebras......................................         532
      665,342   Telesp........................................         142
   42,268,000   Usiminas......................................          45
        8,136   Vale Do Rio Doce..............................         158
                                                                ----------
                                                                     2,062
                                                                ----------
  GERMANY (0.3%)
        8,750   RWE AG........................................         269
        1,900   SAP AG........................................         283
                                                                ----------
                                                                       552
                                                                ----------
  ITALY (0.1%)
       78,000   Fiat S.p.A....................................         137
                                                                ----------
TOTAL PREFERRED STOCKS (Cost $2,432)..........................       2,863
                                                                ----------
<CAPTION>
   NO. OF
   RIGHTS
- -------------
<C>             <S>                                             <C>
RIGHTS (0.1%)
  BRAZIL (0.0%)
 (a,d)284,465   Telebras......................................          --
                                                                ----------
  FRANCE (0.1%)
     (a,d)500   Carrefour S.A., expiring 7/02/96..............         140
     (a)3,100   Casino........................................          --
                                                                ----------
                                                                       140
                                                                ----------
  GERMANY (0.0%)
   (a,d)2,450   Daimler-Benz AG...............................          --
                                                                ----------
  INDONESIA (0.0%)
 (a,d)372,000   Jakarta International Hotel & Development
                  (Foreign)...................................          84
                                                                ----------
</TABLE>
 
The accompanying notes are an integral part of the financial statements. (Pages
                                    182-188)
 
- --------------------------------------------------------------------------------
Active Country Allocation Portfolio
 
                                       12
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
STATEMENT OF NET ASSETS (UNAUDITED)
JUNE 30, 1996
- --------------------------------------------------------------------------------
 
THE ACTIVE COUNTRY ALLOCATION PORTFOLIO (CONT.)
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>
   NO. OF                                                         VALUE
   RIGHTS                                                         (000)
- ------------------------------------------------------------
<C>             <S>                                             <C>
  MALAYSIA (0.0%)
   (a,d)9,000   Malaysian Mining Corp. Bhd....................  $        2
   (a,d)4,333   Metroplex Bhd.................................          --
                                                                ----------
                                                                         2
                                                                ----------
  SINGAPORE (0.0%)
   (a,d)2,300   Oversea-Chinese Banking Corp., expiring
                  7/12/96.....................................          18
                                                                ----------
  SPAIN (0.0%)
       (a)540   Zardoya Otis S.A..............................          --
                                                                ----------
  THAILAND (0.0%)
   (a,d)2,975   Bank of Ayudha Ltd. (Foreign), expiring
                  7/04/96.....................................           9
                                                                ----------
TOTAL RIGHTS (Cost $170)......................................         253
                                                                ----------
<CAPTION>
   NO. OF
  WARRANTS
- -------------
<C>             <S>                                             <C>
WARRANTS (0.0%)
  HONG KONG (0.0%)
     (a)4,400   Applied International Holdings, expiring
                  12/30/99....................................          --
    (a)13,700   Hong Kong & China Gas Co., expiring 9/30/97...           1
   (a,d)2,300   Hysan Development Co., expiring 4/30/98.......          --
   (a,d)1,750   Peregrine Investment Holdings, expiring
                  5/15/98.....................................          --
                                                                ----------
                                                                         1
                                                                ----------
  ITALY (0.0%)
     (a)2,950   R.A.S. S.p.A, expiring 12/31/97...............          11
     (a)1,550   R.A.S. S.p.A. Savings Shares, expiring
                  12/31/97....................................           3
   (a,d)5,250   Rinascente, expiring 12/31/99.................          --
                                                                ----------
                                                                        14
                                                                ----------
  MALAYSIA (0.0%)
     (a)2,400   Hong Leong Properties, expiring 10/00.........           1
     (a)7,000   IOI Corp., expiring 4/30/00...................           3
                                                                ----------
                                                                         4
                                                                ----------
  SINGAPORE (0.0%)
    (a)11,750   Straits Steamship, expiring 12/12/00..........          14
                                                                ----------
  SWITZERLAND (0.0%)
     (a,c)138   Roche Holdings, expiring 5/5/98...............           4
     (a,d)150   Swiss Bank Corp...............................          --
                                                                ----------
                                                                         4
                                                                ----------
<CAPTION>
   NO. OF                                                         VALUE
  WARRANTS                                                        (000)
- ------------------------------------------------------------
<C>             <S>                                             <C>
  THAILAND (0.0%)
   (a,d)6,349   National Finance & Securities Co., Ltd.,
                  expiring 11/15/99...........................  $       14
                                                                ----------
  UNITED KINGDOM (0.0%)
       (a)534   British Aerospace, expiring 11/15/00..........           4
                                                                ----------
TOTAL WARRANTS (Cost $12).....................................          55
                                                                ----------
<CAPTION>
   NO. OF
    UNITS
- -------------
<C>             <S>                                             <C>
UNITS (0.1%)
  AUSTRALIA (0.1%)
       20,821   General Property Trust........................          36
       24,200   Westfield Trust...............................          44
        1,058   Westfield Trust-New Units.....................           2
                                                                ----------
TOTAL UNITS (Cost $78)........................................          82
                                                                ----------
<CAPTION>
    FACE
   AMOUNT
    (000)
- -------------
<C>             <S>                                             <C>
CONVERTIBLE DEBENTURES (0.0%)
  FRANCE (0.0%)
  FRF      60   Sanofi 4.00%, 1/01/00 (Cost $38)..............          51
                                                                ----------
TOTAL FOREIGN SECURITIES (97.6%) (Cost $161,105)..............     172,221
                                                                ----------
FOREIGN CURRENCY (0.5%)
AUD      1      Australian Dollar.............................           1
ATS     216     Austrian Schilling............................          20
BEF     500     Belgian Franc.................................          16
BRC      20     Brazilian Real................................          20
GBP      33     British Pound.................................          51
DEM     14      Deutsche Mark.................................          10
FRF     454     French Franc..................................          88
IDR    7,993    Indonesian Rupiah.............................           3
HKD   3,674     Hong Kong Dollar..............................         475
ITL    6,292    Italian Lira..................................           4
JPY    2,587    Japanese Yen..................................          24
MYR     55      Malaysian Ringgit.............................          22
NLG      20     Netherlands Guilder...........................          12
PTE     140     Portuguese Escudo.............................           1
SGD       5     Singapore Dollar..............................           4
ESP    4,233    Spanish Peseta................................          33
CHF      34     Swiss Franc...................................          27
                                                                ----------
TOTAL FOREIGN CURRENCY (Cost $810)............................         811
                                                                ----------
</TABLE>
 
The accompanying notes are an integral part of the financial statements. (Pages
                                    182-188)
 
- --------------------------------------------------------------------------------
                                             Active Country Allocation Portfolio
 
                                       13
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
STATEMENT OF NET ASSETS (UNAUDITED)
JUNE 30, 1996
- --------------------------------------------------------------------------------
 
THE ACTIVE COUNTRY ALLOCATION PORTFOLIO (CONT.)
- --------------------------------------------------------------------------------
 
<TABLE>
<CAPTION>
                                                                 VALUE
                                                                 (000)
<S>                                                 <C>         <C>
- ------------------------------------------------------------
TOTAL INVESTMENTS (98.1%) (Cost $161,915).....................  $173,032
                                                                --------
OTHER ASSETS (28.1%)
  Securities, at Value, Held as Collateral for
   Securities Lending.............................  $   39,595
  Receivable for Investments Sold.................       4,448
  Net Unrealized Gain on Forward Foreign Currency
   Exchange Contracts.............................       4,017
  Receivable for Portfolio Shares Sold............         678
  Dividends Receivable............................         644
  Foreign Withholding Tax Reclaim Receivable......         132
  Security Lending Income Receivable..............          10
  Other...........................................          18    49,542
                                                    ----------
LIABILITIES (-26.2%)
  Collateral on Securities Loaned, at Value.......     (39,595)
  Payable for Investments Purchased...............      (3,247)
  Bank Overdraft..................................      (3,019)
  Investment Advisory Fees Payable................        (138)
  Custodian Fees Payable..........................         (85)
  Administrative Fees Payable.....................         (29)
  Security Lending Fees Payable...................          (7)
  Payable for Portfolio Shares Redeemed...........          (3)
  Directors' Fees and Expenses Payable............          (3)
  Sub-Administrative Fees Payable.................          (1)
  Other Liabilities...............................         (49)  (46,176)
                                                    ----------  --------
NET ASSETS (100%).............................................  $176,398
                                                                --------
                                                                --------
NET ASSETS CONSIST OF:
Paid in Capital...............................................  $149,056
Accumulated Net Investment Loss...............................    (6,378)
Accumulated Net Realized Gain.................................    18,592
Unrealized Appreciation on Investments and Foreign Currency
  Translations (Net of accrual for foreign tax of $4 on
  unrealized appreciation on investments).....................    15,128
                                                                --------
NET ASSETS....................................................  $176,398
                                                                --------
                                                                --------
CLASS A:
NET ASSETS....................................................  $175,678
NET ASSET VALUE, OFFERING AND REDEMPTION
  PRICE PER SHARE
  Applicable to 13,962,198 outstanding $0.001 par value shares
  (authorized 500,000,000 shares).............................    $12.58
                                                                --------
                                                                --------
CLASS B:
NET ASSETS....................................................      $720
NET ASSET VALUE, OFFERING AND REDEMPTION
  PRICE PER SHARE
  Applicable to 57,285 outstanding $0.001 par value shares
  (authorized 500,000,000 shares).............................    $12.57
                                                                --------
                                                                --------
 
- ------------------------------------------------------------
FORWARD FOREIGN CURRENCY EXCHANGE CONTRACT INFORMATION:
   Under the terms of forward foreign currency exchange contracts open
   at June 30, 1996, the Portfolio is obligated to deliver or is to
   receive foreign currency in exchange for U.S. dollars or foreign
   currency as indicated below:
</TABLE>
 
<TABLE>
<CAPTION>
                                                                     NET
  CURRENCY TO                            IN EXCHANGE             UNREALIZED
    DELIVER       VALUE   SETTLEMENT         FOR         VALUE   GAIN (LOSS)
     (000)        (000)      DATE           (000)        (000)      (000)
- ---------------  -------  ----------   ---------------  -------  -----------
<S>              <C>      <C>          <C>              <C>      <C>
MYR       7,235  $ 2,900    7/02/96    U.S.$     2,900  $ 2,900  $      --
U.S.$        16       16    7/03/96    MYR          40       16        --
U.S.$         8        8    7/03/96    THB         193        8        --
DEM      24,812   16,340    7/15/96    U.S.$    16,259   16,259       (81)
JPY   1,238,053   11,352    7/15/96    U.S.$    11,730   11,730       378
ATS      17,426    1,632    7/31/96    U.S.$     1,625    1,625        (7)
CHF       5,745    4,610    7/31/96    U.S.$     4,667    4,667        57
JPY   1,238,053   11,379    7/31/96    U.S.$    11,754   11,754       375
NLG      13,733    8,077    7/31/96    U.S.$     8,897    8,897       820
U.S.$     2,850    2,850    7/31/96    NLG       4,661    2,741      (109)
U.S.$       170      170    7/31/96    CHF         212      170        --
FRF      56,074   10,936    8/14/96    U.S.$    10,897   10,897       (39)
JPY   2,466,861   22,720    8/14/96    U.S.$    24,683   24,683     1,963
JPY     310,447    2,865    8/30/96    U.S.$     3,525    3,525       660
                 -------                                -------  -----------
                 $95,855                                $99,872    $4,017
                 -------                                -------  -----------
                 -------                                -------  -----------
</TABLE>
 
- ------------------------------------------------------------
 
(a)   --   Non-income producing security
(c)   --   Security valued at cost -- See note A-1
           to financial statements
(d)   --   Security valued at fair value -- See
           note A-1 to financial statements
NCS   --   Non Convertible Shares
PCL   --   Public Company Limited
RFD   --   Ranked for Dividend
THB   --   Thai Baht
 
- ------------------------------------------------
 
            SUMMARY OF FOREIGN SECURITIES BY INDUSTRY CLASSIFICATION
 
<TABLE>
<CAPTION>
                                           VALUE     PERCENT OF
INDUSTRY                                   (000)     NET ASSETS
<S>                                       <C>       <C>
- ----------------------------------------------------------------
Capital Equipment.......................  $ 21,786        12.4%
Consumer Goods..........................    30,693        17.4
Energy..................................    16,858         9.6
Finance.................................    47,339        26.8
Gold Mines..............................       102         0.0
Materials...............................    22,118        12.5
Multi-Industry..........................     6,658         3.8
Services................................    26,667        15.1
                                          --------         ---
                                          $172,221        97.6%
                                          --------         ---
                                          --------         ---
</TABLE>
 
The accompanying notes are an integral part of the financial statements. (Pages
                                    182-188)
 
- --------------------------------------------------------------------------------
Active Country Allocation Portfolio
 
                                       14
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
 
OVERVIEW
- --------------------------------------------------------------------------------
 
THE ASIAN EQUITY PORTFOLIO
 
COMPOSITION OF NET ASSETS (AT JUNE 30, 1996)
 
EDGAR REPRESENTATION OF DATA POINTS USED IN PRINTED GRAPHIC
 
<TABLE>
<S>          <C>
China             0.6%
Hong Kong        27.0%
India             0.6%
Indonesia         7.6%
Korea             3.9%
Malaysia         21.4%
Philippines       5.4%
Singapore        13.1%
Taiwan            5.0%
Thailand         11.4%
Other             4.0%
</TABLE>
 
PERFORMANCE COMPARED TO THE MORGAN STANLEY
CAPITAL INTERNATIONAL (MSCI) COMBINED FAR EAST
FREE EX-JAPAN INDEX(1)
- -------------------------------------------
 
<TABLE>
<CAPTION>
                                       TOTAL RETURNS(2)
                         ---------------------------------------------
                                                      AVERAGE ANNUAL
                             YTD        ONE YEAR      SINCE INCEPTION
                         -----------  -------------  -----------------
<S>                      <C>          <C>            <C>
PORTFOLIO -- CLASS A...       5.75%         5.58%           20.82%
PORTFOLIO -- CLASS
B(3)...................       5.32           N/A              N/A
INDEX..................       8.36          8.17            18.60
 
<FN>
 
1. The MSCI Combined Far East Free ex-Japan Index is an unmanaged index of
   common stocks and includes Indonesia, Hong Kong, Malaysia, the Philippines,
   Korea, Singapore, Taiwan and Thailand (assumes dividends reinvested).
 
2. Total returns for the Portfolio reflect expenses waived and reimbursed, if
   applicable, by the Adviser. Without such waiver and reimbursement, total
   returns would be lower.
 
3. The Portfolio began offering Class B shares on January 2, 1996.
</TABLE>
 
PAST PERFORMANCE IS NOT PREDICTIVE OF FUTURE PERFORMANCE.
 
- ------------------------------------------------------------
 
THE COUNTRY SPECIFIC PERFORMANCE RESULTS PROVIDED ARE AS MEASURED BY THE MSCI
COMBINED FAR EAST FREE EX-JAPAN INDEX AND ARE FOR INFORMATIONAL PURPOSES ONLY
AND SHOULD NOT BE CONSTRUED AS A GUARANTEE OF THE PORTFOLIO'S FUTURE
PERFORMANCE. PAST PERFORMANCE SHOWN IS NOT PREDICTIVE OF FUTURE PERFORMANCE.
INVESTMENT RETURN AND PRINCIPAL VALUE WILL FLUCTUATE SO THAT AN INVESTOR'S
SHARES, WHEN REDEEMED, MAY BE WORTH MORE OR LESS THAN THEIR ORIGINAL COST.
PLEASE SEE THE PROSPECTUS FOR A DESCRIPTION OF CERTAIN RISK CONSIDERATIONS
ASSOCIATED WITH INTERNATIONAL INVESTING.
 
The investment objective of the Asian Equity Portfolio is to seek long-term
capital appreciation by investing primarily in equity securities which are
traded on recognized exchanges of Hong Kong, Singapore, Malaysia, Thailand,
Indonesia and the Philippines. The Portfolio may also invest in equity
securities traded on markets in Taiwan, South Korea, India, Pakistan, Sri Lanka
and other Asian developing markets which are open for foreign investment. The
Portfolio does not intend to invest in securities which are principally traded
in Japan or in companies organized under the laws of Japan.
 
For the six month period ended June 30, 1996, the Portfolio had a total return
of 5.75% for the Class A shares and 5.32% for the Class B shares, as compared to
a total return of 8.36% for the Morgan Stanley Capital International (MSCI)
combined Far East Free ex-Japan Index. The average annual total return for the
twelve months ended June 30, 1996 and for the period from inception on July 1,
1991 through June 30, 1996 was 5.58% and 20.82%, respectively, for the Class A
shares, as compared with 8.17% and 18.60%, respectively, for the Index.
 
REVIEW
 
Sentiment on Hong Kong continued to be weighed down by fears of rising interest
rates in the U.S. and by uncertainties associated with the return of the
territory to China next year. With 1997 approaching, the stepping up of Chinese
interests in Hong Kong becomes increasingly evident. This was manifested in the
restructuring of shareholdings in Dragonair and Cathay Pacific with China
National Aviation Corporation (CNAC) becoming the single largest shareholder in
Dragonair and Citic Pacific stepping up its interest in Cathay Pacific. The
residential market recovered strongly with prices rising by 10-15%, helped by
lower mortgage rates. Capital values and rents of office properties also
appeared to have bottomed out. Hong Kong Telecom faced heavy selling pressure
due to uncertainties over possible regulatory changes and a more competitive
operating environment in the future.
 
In Malaysia, the surprise return of Tengku Razaleigh (former opposition rival to
the Prime Minister) to UMNO has fortified Mahathir's stronghold on the dominant
political party and reassured him of an unassailable position in the upcoming
party elections at the end of the year. On the economic front, trade statistics
through the year to April 1996 appear to indicate a bottoming out of the current
account deficit. However, a more convincing reduction in the current account
from the present 8% of GDP is only expected in 1998. Loan growth remained
alarmingly
 
- --------------------------------------------------------------------------------
                                                          Asian Equity Portfolio
 
                                       15
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
 
OVERVIEW
- --------------------------------------------------------------------------------
THE ASIAN EQUITY PORTFOLIO (CONT.)
 
high at above 30% which prompted the Central Bank to raise the Statutory Reserve
Ratio twice this year to 13.5% (+2%). In addition, rising interest rates, a
crunch in margin financing for speculative shares combined with an impending
dilution in weighting in the rebalanced benchmark MSCI indices caused weakness
in share prices in June. In Singapore, the Government's announcement of
anti-speculation measures in May to cool the residential property market
resulted in heavy selling of residential property stocks. Meanwhile, stocks
which were recently included in the MSCI indices came under the spotlight, with
Singapore Telecom and STIC rising strongly before profit-taking pared their
gains. Share price performance of banks remained lackluster due to concerns over
slow earnings growth, while news from the marine sector was still bleak.
 
The Thailand market fell 2.4% in the second quarter of 1996 and remained one of
the worst performing markets in Asia. Rumors about bad debts in finance
companies and banks sparked panic selling. There was also talk of property
companies not being able to service their debt. On the macroeconomics front, the
trade deficit improved in May but loan growth, exports and FDI continued to
slow. Fears that the slowdown in the economy may accelerate, prompted the
central bank to allow some commercial banks to lower lending rates. Lastly,
there were major downward earnings revisions in sectors like banks, finance
companies and telecommunications.
 
In Indonesia, political unrest coupled with a reduction in the country weighting
within the rebalanced MSCI indices sparked heavy institutional selling in the
Indonesian market in June. Rioting in the streets in support of the ousted
Megawati Sukarno, former chairperson of PDI (effectively the only opposition
party), ignited fears among investors of a potential blow-up of
anti-establishment sentiment in the run-up to the Presidential elections next
year. As for the market, continued weak performance in exports which led to an
upward revision in the current account deficit for 1996 and a widening of the
Rupiah band to accelerate the currency depreciation were factors that sapped
investors' enthusiasm towards the market. This, together with increased cash
calls and anticipation of a second tranche placement of PT Telkom's shares
weighed down investors' sentiment in the market.
 
The Korean market was plagued by concerns over trade and current account
deficits, which arose from lower growth of such major exports as semiconductors,
textiles and automobiles. The government's planned W2.5 trillion new equity
supply in the third quarter of 1996 also discouraged stock investment. The
persistent weakness of the market was also attributable to the liquidation of
close to W1 trillion of outstanding margin positions.
 
The Philippines market ended the quarter strongly with a 16.1% gain. An upward
earnings revision continued in the second quarter, making it the market with the
strongest earnings momentum in Asia. On the economic front, first quarter of
1996 grew at 6.2% versus 5.7% in the fourth quarter of 1996 and interest rates
inched up slightly on the T-bill auction. Moreover, index-linked buying helped
the market, led by Petron which rose 33% this quarter. Mid-cap and small-cap
stocks took a breather from the heady rally over the last few months.
 
In Taiwan, the Central Bank continued to ease monetary policy. Money supply
growth began to pick up after a period of contraction. The market rebounded
sharply in April following the easing of cross-strait tensions and on news that
MSCI was proposing to include Taiwan in its indices. The market saw moderate
profit-taking in May, before another wave of buying in June sent the index up
another 13% when Taiwan's weighting in the MSCI indices turned out to be higher
than what most investors had expected.
 
In India, the market rallied, encouraged by Prime Minister Gowda's plans to
continue with liberalization and reforms. The market was lifted further by
strong corporate results.
 
In China, earnings for 1995 were below analysts' expectations and austerity
measures were blamed for the earnings shortfall. Since then, the authorities
have selected 300 companies which will be given priority loans in the second
half of 1996, signifying a fiscal stimulus. In addition, news that the Guangdong
government wanted to revive the stock market led to further buying frenzy. The
MSCI China Free Index ended the quarter virtually unchanged, while the Shenzhen
and Shanghai Stock Indices rose 21% and 5%, respectively.
 
OUTLOOK
 
Fears of rising U.S. interest rates and trade issues remain the major concerns
among equity investors, but these may have already been reflected in the stock
prices.
 
Demand for Hong Kong equities may be affected slightly by its reduced weight in
the MSCI indices.
 
- --------------------------------------------------------------------------------
Asian Equity Portfolio
 
                                       16
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
 
OVERVIEW
- --------------------------------------------------------------------------------
THE ASIAN EQUITY PORTFOLIO (CONT.)
 
A turnaround in the Hong Kong property market and the Chinese economy should
help corporate earnings and provide firm support for share prices.
 
Barring any sharp downturn in the U.S. market in the medium term, the Malaysian
market is expected to record its traditional August rally ahead of the interim
announcement season and the October Budget. The Central Bank is expected to
continue its policy of gradually tightening credit in the system to reduce the
level of loan expansion. Administrative controls may also be selectively
introduced in order to deter unproductive expenditures.
 
Based on the current valuation of 20x prospective 1996 price earnings ratio,
which is close to the average of the last 5 years, downside risk is not
substantial.
 
The Singapore market appears to be out of favor with institutional investors
because of high foreign premia and the lack of earnings growth momentum.
 
Stocks with high exposure to the residential sector are likely to continue to
mark time as sales of private leasehold residential properties will likely slow
with the advent of competitively priced government executive condominiums.
 
Valuations of banks and office property stocks are attractive and should
outperform the market.
 
The Thailand market is expected to languish at current levels for a while as
investors await second quarter earnings. Reported earnings are likely to be weak
and may prompt further selling.
 
The depth of the correction is masked by the fact that several blue-chip stocks
are holding up the Index. In reality the prices of many sector/stocks have
corrected sharply year-to-date. This presents a good opportunity for investors
to start accumulating.
 
While the market may not take off from here, unless the economy or the currency
goes into a tailspin, the downside risk on the market would seem limited.
 
Investors are expected to demand a higher risk premium on the Indonesian market
in view of the recent political developments.
 
Further agitations on the political front are expected to undermine both direct
investments and portfolio investments leading to a deterioration in economic
outlook.
 
External accounts are not expected to show a significant improvement in the
short term and monetary policy will remain tight.
 
Strong earnings growth and reasonable market valuation, however, are expected to
limit downside risk to the market in the short term.
 
The Korean market is likely to recover strongly in the second half of the year
on the back of improving trade and current account numbers, declining interest
rates and a recovery in export earnings.
 
The W 1 trillion margin liquidation is expected to end in July, thereby reducing
further retail selling pressure.
 
The recent underperformance of the export-oriented sectors and blue-chips (e.g.
Samsung Electronics) may be coming to an end.
 
Values in the banking and non-life insurance sectors look compelling given an
improving operating environment and the prospect of a turnaround in earnings.
 
In the Philippines, earnings growth is expected to remain strong although there
are creeping signs of excessive optimism in the share prices.
 
Inflation stabilized at 10.4% in May from 11.6% in the first quarter of 1996.
This would imply little room for monetary easing in the short term. This may cap
the market's rise. The market should continue to hold up relatively well,
although profit-taking may pare some of the gains this year.
 
The small but rapidly growing over-the-counter market in Taiwan has attracted
strong interest from investors. The stock market rally has become more broadly
base with rotational buying. Stock prices should be supported by easier monetary
policy and the gradual recovery of the real estate market.
 
The finance sector should benefit from the recovery of the real estate market,
while the eventual establishment of direct shipping links between Taiwan and
China should help earnings of shipping companies.
 
Performance of electronics stocks in the near term is likely to remain
lacklustre due to uncertainties over near term earnings outlook.
 
Plastics and textile stocks are still affected by excess supply and weak demand,
but stock prices appear to have moved ahead of fundamentals.
 
The overall market is supported by strong domestic liquidity and the continued
building of portfolio positions by foreign investors.
 
- --------------------------------------------------------------------------------
                                                          Asian Equity Portfolio
 
                                       17
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
 
OVERVIEW
- --------------------------------------------------------------------------------
THE ASIAN EQUITY PORTFOLIO (CONT.)
 
Investors in India are waiting for the coalition government to announce its
budget which will provide concrete evidence of its intention and ability to
continue with reforms.
 
The market could be dampened as inflation is expected to increase. In addition,
many Indian companies are raising money via GDRs thus soaking liquidity from the
system.
 
Liquidity should improve because of an expected cut in CRR and increased FDIs
and FIIs.
 
Rumors about interest rate cuts, anticipated to be in July, drew more buyers
into the Chinese market. Several companies announced share placements. Sizable
listings of China-infrastructure related companies dampened liquidity slightly.
 
The interest rate cut, if it came about, could add another boost to the market.
The sharp rise in the market cannot be sustained, and the market will probably
stabilize over the next one or two months.
 
Investors will also have to contend with cash calls and dilution as more new
issues in the form of IPOs and rights issues are expected over the course of the
year. This may soak liquidity from the system.
 
The Australian market ended the quarter almost unchanged.
 
Stronger than expected GDP growth of 1.8% in the first quarter of 1996 saw
economists revise upward the economic forecasts from 2.5% to 3% for the year to
June 1997.
 
A mini price war on mortgages sparked selling in the banking sector. They
however recovered towards the end of the month. Resource stocks fell sharply on
the back of the panic over copper prices after the Sumitomo incident. Weak steel
prices took its toll on BHP, a steel producer.
 
Strong economic growth may eventually filter through to corporate earnings.
Industrials are likely to do well from here after a period of depressed
performance. Fears over rising U.S. interest rates may dampen investor interest.
Anticipation of rising labor costs that will hurt companies' margins may prevent
the strong economic growth from filtering down to corporate earnings. Selling
prices are also under pressure.
 
Selected stocks however offer good value especially in the industrial sector.
 
Ean Wah Chin
PORTFOLIO MANAGER
 
July 1996
 
- --------------------------------------------------------------------------------
Asian Equity Portfolio
 
                                       18
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
STATEMENT OF NET ASSETS (UNAUDITED)
JUNE 30, 1996
- --------------------------------------------------------------------------------
 
THE ASIAN EQUITY PORTFOLIO
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>
                                                                    VALUE
   SHARES                                                           (000)
- ------------------------------------------------------------
<C>           <S>                                                 <C>
COMMON STOCKS (95.6%)
  CHINA (0.6%)
     428,440  China Merchants Shekou Port Services, Class B.....  $      188
   2,511,000  Harbin Power Equipment Co., Ltd., Class H.........         377
       4,800  Jilin Chemical Co., Ltd., ADR.....................          88
   1,512,775  Shanghai Jinqiao, Class B.........................         590
  (a)742,300  Shenzen North Jainshe Motorcycle Co., Ltd., Class
                B...............................................         259
   4,401,000  Yizheng Chemical Fibre Co., Class H...............         972
                                                                  ----------
                                                                       2,474
                                                                  ----------
  HONG KONG (27.0%)
  (a)231,000  Asia Satellite Telecommunications Holdings Ltd....         685
   2,411,000  Cheung Kong Holdings Ltd..........................      17,364
     704,500  China Light & Power Co., Ltd......................       3,195
   1,557,500  Citic Pacific Ltd.................................       6,298
   3,516,000  C.P. Pokphand Co., Ltd............................       1,397
   4,662,000  Guangdong Investments Ltd.........................       2,951
   (a)24,000  Guangshen Railway Co., Ltd., ADR..................         459
     811,000  Hang Seng Bank Ltd................................       8,172
     868,420  Hong Kong & Shanghai Bank Holdings plc............      13,126
     611,500  Hong Kong Electric Holdings Ltd...................       1,864
   6,645,000  Hong Kong Telecommunications Ltd..................      11,932
   2,218,000  Hopewell Holdings Ltd.............................       1,204
   2,406,000  Hutchison Whampoa Ltd.............................      15,137
   1,860,000  New World Development Co., Ltd....................       8,626
   1,033,100  Sun Hung Kai Properties Ltd.......................      10,444
   1,208,060  Swire Pacific Ltd., Class A.......................      10,339
   1,034,000  Varitronix International Ltd......................       2,157
   1,115,000  Wharf Holdings Ltd................................       3,990
                                                                  ----------
                                                                     119,340
                                                                  ----------
  INDIA (0.6%)
      38,000  Grasim Industries Ltd., GDR.......................         703
 (a,e)51,000  Hindalco Industries Ltd., GDR.....................       1,925
                                                                  ----------
                                                                       2,628
                                                                  ----------
  INDONESIA (7.6%)
   1,407,500  Astra International (Foreign).....................       2,041
  (d)483,000  Bank International Indonesia (Foreign)............       2,386
(d)1,256,000  Barito Pacific Timber (Foreign)...................         823
  (d)774,500  Bimantara Citra (Foreign).........................         973
(d)1,549,000  Gudang Garam (Foreign)............................       6,639
  (d)374,600  Hanajaya Mandala Sampoerna (Foreign)..............       4,265
(d)3,072,500  Indah Kiat Pulp & Paper Corp. (Foreign)...........       3,003
  (d)330,000  Indocement Tunggal (Foreign)......................       1,134
  (d)351,600  Kalbe Farma (Foreign).............................         786
  (d)364,000  Semen Gresik (Foreign)............................       1,060
 
<CAPTION>
                                                                    VALUE
   SHARES                                                           (000)
- ------------------------------------------------------------
<C>           <S>                                                 <C>
  (d)277,333  Sorini Corp. (Foreign)............................  $    1,525
  (d)210,500  Suba Indah (Foreign)..............................         163
(d)5,756,500  Telekomunikasi Indonesia (Foreign)................       8,718
                                                                  ----------
                                                                      33,516
                                                                  ----------
  KOREA (3.9%)
 (a,d)18,022  Chosun Brewery Co., Ltd...........................         616
 (a,d)53,450  Housing & Commercial Bank.........................       1,469
   (d)53,900  Korea Electric Power (Foreign)....................       2,177
   (a)60,000  Korea Mobile Telecom ADR..........................       1,027
    (d)1,694  Korea Mobile Telecom (Foreign)....................       2,005
      61,600  Pohang Iron & Steel Co., Ltd., ADR................       1,502
      23,778  Samsung Electronics (Foreign).....................       1,996
  (a,e)7,833  Samsung Electronics GDR (New).....................         405
   (a)27,595  Samsung Electronics (RFD).........................       2,317
    (d)1,524  Samsung Fire & Marine Insurance Co................       1,099
  (d)122,761  Shinhan Bank (Foreign)............................       2,867
                                                                  ----------
                                                                      17,480
                                                                  ----------
  MALAYSIA (21.3%)
     227,800  AMMB Holdings Bhd.................................       3,196
     474,000  Edaran Otomobil Nasional Bhd......................       4,542
   1,494,700  Genting Bhd.......................................      11,684
   1,481,000  IOI Corp. Bhd.....................................       2,054
      75,000  Konsortium Perkapalan Bhd.........................         451
     793,000  Leader Universal Holdings Bhd.....................       2,241
     638,000  Magnum Corp. Bhd..................................       1,079
   1,131,500  Malayan Banking Bhd...............................      10,886
   1,400,316  Malaysian International Shipping Bhd. (Foreign)...       4,351
   1,986,000  Petronas Gas Bhd..................................       8,519
     777,000  Public Bank Bhd...................................       2,149
   3,325,000  Renong Bhd........................................       5,305
   1,583,000  Resorts World Bhd.................................       9,075
     799,000  Sime Darby Bhd....................................       2,210
   1,378,000  TA Enterprise Bhd.................................       2,154
     295,000  Tan Chong Motor Holdings Bhd......................         431
   1,277,000  Telekom Malaysia Bhd..............................      11,365
   1,888,000  Tenaga Nasional Bhd...............................       7,947
     636,757  United Engineers Ltd. (Malaysia)..................       4,416
                                                                  ----------
                                                                      94,055
                                                                  ----------
  PHILIPPINES (5.4%)
     710,400  Ayala Corp., Class B..............................       1,342
     824,525  Ayala Land, Inc., Class B.........................       1,479
   2,719,800  C&P Homes, Inc....................................       2,362
(a)1,865,100  DMCI Holdings, Inc................................       1,335
  13,893,500  JG Summit Holding, Class B........................       5,197
     335,050  Manila Electric Co., Class B......................       3,517
   6,309,075  Petron Corp.......................................       2,890
      18,125  Philippine Long Distance Telephone Co., ADR.......       1,053
      42,250  Philippine Long Distance Telephone Co., Class B...       2,516
      62,900  San Miguel Corp., Class B.........................         217
</TABLE>
 
The accompanying notes are an integral part of the financial statements. (Pages
                                    182-188)
 
- --------------------------------------------------------------------------------
                                                          Asian Equity Portfolio
 
                                       19
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
STATEMENT OF NET ASSETS (UNAUDITED)
JUNE 30, 1996
- --------------------------------------------------------------------------------
 
THE ASIAN EQUITY PORTFOLIO (CONT.)
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>
                                                                    VALUE
   SHARES                                                           (000)
- ------------------------------------------------------------
<C>           <S>                                                 <C>
</TABLE>
 
  PHILIPPINES (CONT.)
<TABLE>
<C>           <S>                                                 <C>
   8,288,400  SM Prime Holdings, Inc., Class B..................  $    2,151
                                                                  ----------
                                                                      24,059
                                                                  ----------
  SINGAPORE (12.8%)
      84,080  City Developments Ltd.............................         655
   2,216,000  Comfort Group Ltd.................................       2,199
     966,000  CSA Holding Ltd...................................         952
     252,000  DBS Land Ltd......................................         864
     535,500  Development Bank of Singapore Ltd. (Foreign)......       6,680
     178,560  Fraser & Neave Ltd................................       1,848
   2,145,000  Kay Hian James Capel Holdings Ltd. (Foreign)......       2,265
     837,000  Keppel Corp., Ltd.................................       7,000
     623,166  Oversea-Chinese Banking Corp. (Foreign)...........       7,287
     282,000  Sembawang Corp....................................       1,399
     420,000  Singapore Airlines Ltd. (Foreign).................       4,435
     124,400  Singapore Press Holdings (Foreign)................       2,442
   1,486,000  Singapore Technologies Industrial Corp............       3,939
     846,000  Straits Steamship Land Ltd........................       2,830
     477,000  Straits Trading Co., Ltd..........................       1,251
   1,275,000  Sunright Ltd......................................       1,310
     739,200  United Overseas Bank Ltd. (Foreign)...............       7,072
  (a)903,000  Want Want Holdings................................       2,429
                                                                  ----------
                                                                      56,857
                                                                  ----------
  TAIWAN (5.0%)
     921,000  Cathay Life Insurance Co., Ltd....................       6,493
   3,908,000  China Steel Corp..................................       4,090
     444,000  Hua Nan Commercial Bank...........................       2,339
(a)1,566,600  Taiwan Semiconductor Manufacturing Co.............       3,273
     905,650  United Micro Electronics Corp., Ltd...............       1,343
   2,977,000  Yang Ming Marine Transport........................       4,392
                                                                  ----------
                                                                      21,930
                                                                  ----------
  THAILAND (11.4%)
     120,000  Advanced Information Service PCL (Foreign)........       1,777
     677,800  Bangkok Bank Ltd. (Foreign).......................       9,185
     864,000  Finance One Co., Ltd. (Foreign)...................       5,582
     915,800  National Finance & Securities Co., Ltd.
                (Foreign).......................................       4,077
     266,600  Phatra Thanakit Co., Ltd. (Foreign)...............       1,859
      89,100  Shinawatra Computer Co., Ltd (Foreign)............       1,931
      41,000  Siam Cement Co., Ltd. (Foreign)...................       2,012
<CAPTION>
                                                                    VALUE
   SHARES                                                           (000)
- ------------------------------------------------------------
<C>           <S>                                                 <C>
     611,400  Siam Commercial Bank (Foreign)....................  $    8,863
(a,d)2,012,300 TelecomAsia Corp. PCL (Foreign)...................      4,281
     778,070  Thai Farmers Bank, Ltd. (Foreign).................       8,521
  (d)176,600  United Communications Industry (Foreign)..........       2,365
                                                                  ----------
                                                                      50,453
                                                                  ----------
TOTAL COMMON STOCKS (Cost $375,861).............................     422,792
                                                                  ----------
<CAPTION>
 
   NO. OF
   RIGHTS
- ------------
<C>           <S>                                                 <C>
RIGHTS (0.1%)
  SINGAPORE (0.1%)
 (a,d)62,317  Oversea-Chinese Banking Corp., expiring 7/12/96
                (Cost $0).......................................         501
                                                                  ----------
<CAPTION>
 
   NO. OF
  WARRANTS
- ------------
<C>           <S>                                                 <C>
WARRANTS (0.2%)
  SINGAPORE (0.2%)
  (a)428,125  Renong Bhd, expiring 11/21/00.....................         194
  (a)607,750  Straits Steamship Land Ltd., expiring 12/20/00....         762
                                                                  ----------
TOTAL WARRANTS (Cost $897)......................................         956
                                                                  ----------
<CAPTION>
    FACE
   AMOUNT
   (000)
- ------------
<C>           <S>                                                 <C>
FIXED INCOME SECURITIES (0.1%)
  MALAYSIA (0.1%)
MYR      685  Renong Bhd 4.00%, 5/21/01
                (Cost $275).....................................         258
                                                                  ----------
TOTAL FOREIGN SECURITIES (96.0%) (Cost $377,033)................     424,507
                                                                  ----------
SHORT-TERM INVESTMENT (2.9%)
  REPURCHASE AGREEMENT (2.9%)
$     12,957  Chase Securities, Inc. 5.15%, dated 6/28/96, due
                7/01/96, to be repurchased at $12,963,
                collateralized by $12,730 U.S. Treasury Notes,
                7.125%, due 9/30/99, valued at $13,014 (Cost
                $12,957)........................................      12,957
                                                                  ----------
</TABLE>
 
<TABLE>
<C>           <S>                                                     <C>
FOREIGN CURRENCY (0.9%)
HKD  3,255    Hong Kong Dollar......................................     420
IDR 639,299   Indonesian Rupiah.....................................     275
KRW 42,451    Korean Won............................................      52
MYR  1,783    Malaysian Ringgit.....................................     715
PHP  10,610   Philippine Peso.......................................     405
TWD 64,420    Taiwan Dollar.........................................   2,341
                                                                      ------
</TABLE>
 
<TABLE>
  <S>                                               <C>           <C>
  TOTAL FOREIGN CURRENCY (Cost $4,199)..........................       4,208
                                                                  ----------
</TABLE>
 
The accompanying notes are an integral part of the financial statements. (Pages
                                    182-188)
 
- --------------------------------------------------------------------------------
Asian Equity Portfolio
 
                                       20
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
STATEMENT OF NET ASSETS (UNAUDITED)
JUNE 30, 1996
- --------------------------------------------------------------------------------
 
THE ASIAN EQUITY PORTFOLIO (CONT.)
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>
                                                                    VALUE
                                                                    (000)
  ------------------------------------------------------------
  <S>                                               <C>           <C>
  TOTAL INVESTMENTS (99.8%) (Cost $394,189).....................    $441,672
                                                                  ----------
  OTHER ASSETS (1.2%)
    Receivable for Investments Sold................. $      4,077
    Dividends Receivable............................          806
    Receivable for Portfolio Shares Sold............          295
    Foreign Withholding Tax Reclaim Receivable......           33
    Interest Receivable.............................            6
    Other...........................................           24      5,241
                                                    ------------
  LIABILITIES (-1.0%)
    Payable for Portfolio Shares Redeemed...........      (2,001)
    Payable for Investments Purchased...............        (967)
    Investment Advisory Fees Payable................        (572)
    Bank Overdraft..................................        (419)
    Custodian Fees Payable..........................        (252)
    Deferred Foreign Taxes Payable..................        (149)
    Administrative Fees Payable.....................         (55)
    Distribution Fees Payable.......................          (8)
    Directors' Fees and Expenses Payable............          (7)
    Other Liabilities...............................         (89)     (4,519)
                                                    ------------  ----------
  NET ASSETS (100%).............................................    $442,394
                                                                  ----------
                                                                  ----------
  NET ASSETS CONSIST OF:
  Paid in Capital...............................................  $  378,362
  Undistributed Net Investment Income...........................       2,106
  Accumulated Net Realized Gain.................................      14,594
  Unrealized Appreciation on Investments and Foreign Currency
    Translations (Net of accrual for foreign tax of $149 on
    unrealized appreciation on investments).....................      47,332
                                                                  ----------
  NET ASSETS....................................................  $  442,394
                                                                  ----------
                                                                  ----------
  CLASS A:
  NET ASSETS....................................................  $  428,915
  NET ASSET VALUE, OFFERING AND REDEMPTION
    PRICE PER SHARE
    Applicable to 20,816,967 outstanding $0.001 par value shares
    (authorized 500,000,000 shares).............................      $20.60
                                                                  ----------
                                                                  ----------
  CLASS B:
  NET ASSETS....................................................     $13,479
  NET ASSET VALUE, OFFERING AND REDEMPTION
    PRICE PER SHARE
    Applicable to 654,488 outstanding $0.001 par value shares
    (authorized 500,000,000 shares).............................      $20.59
                                                                  ----------
                                                                  ----------
</TABLE>
 
- ------------------------------------------------------------
 
(a)  --   Non-income producing security
(d)  --   Securities (totaling $48,855 or 11.0% of
          net assets at June 30, 1996) valued at
          fair value -- See note A-1 to financial
          statements
(e)  --   144A Security -- Certain conditions for
          public sale may exist
ADR  --   American Depositary Receipt
GDR  --   Global Depositary Receipt
PCL  --   Public Company Limited
RFD  --   Ranked for Dividend
 
- ------------------------------------------------------------
 
            SUMMARY OF FOREIGN SECURITIES BY INDUSTRY CLASSIFICATION
 
<TABLE>
<CAPTION>
                                           VALUE     PERCENT OF
INDUSTRY                                   (000)     NET ASSETS
<S>                                       <C>       <C>
- -----------------------------------------------------------------
Capital Equipment.......................  $ 24,603         5.6%
Consumer Goods..........................    23,263         5.3
Energy..................................    30,108         6.8
Finance.................................   185,902        42.0
Materials...............................    21,608         4.9
Multi-Industry..........................    33,527         7.6
Services................................   105,496        23.8
                                          --------       -----
                                          $424,507        96.0%
                                          --------       -----
                                          --------       -----
</TABLE>
 
The accompanying notes are an integral part of the financial statements. (Pages
                                    182-188)
 
- --------------------------------------------------------------------------------
                                                          Asian Equity Portfolio
 
                                       21
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
 
OVERVIEW
- --------------------------------------------------------------------------------
 
THE EMERGING MARKETS PORTFOLIO
 
COMPOSITION OF NET ASSETS (AT JUNE 30, 1996)
 
EDGAR REPRESENTATION OF DATA POINTS USED IN PRINTED GRAPHIC
 
<TABLE>
<S>               <C>
Argentina              1.6%
Brazil                14.0%
Chile                  0.1%
China                  0.5%
Colombia               0.8%
Egypt                  0.4%
Greece                 1.2%
Hong Kong              6.3%
Hungary                0.1%
India                 11.4%
Indonesia              5.7%
Israel                 2.5%
Korea                  2.7%
Mexico                 9.4%
Morocco                1.3%
Pakistan               2.7%
Philippines            3.5%
Poland                 1.2%
Portugal               0.1%
Russia                 7.2%
Singapore              0.3%
South Africa           3.8%
Taiwan                 5.5%
Thailand               4.3%
Turkey                 5.1%
United Kingdom         0.2%
Zimbabwe               0.2%
Other                  7.9%
</TABLE>
 
PERFORMANCE COMPARED TO THE IFC GLOBAL TOTAL
RETURN COMPOSITE INDEX(1)
- ------------------------------------------
 
<TABLE>
<CAPTION>
                                     TOTAL RETURNS(2)
                        -------------------------------------------
                                                   AVERAGE ANNUAL
                            YTD       ONE YEAR     SINCE INCEPTION
                        -----------  -----------  -----------------
<S>                     <C>          <C>          <C>
PORTFOLIO -- CLASS
A.....................      20.32%        13.41%         16.93%
PORTFOLIO -- CLASS
B(3)..................      19.17           N/A            N/A
INDEX.................      13.45          8.44          15.99
 
<FN>
 
1. The IFC Global Total Return Composite Index is an unmanaged index of common
   stocks and includes developing countries in Latin America, East and South
   Asia, Europe, the Middle East and Africa (assumes dividends reinvested).
 
2. Total returns for the Portfolio reflect expenses waived and reimbursed, if
   applicable, by the Adviser. Without such waiver and reimbursement, total
   returns would be lower.
 
3. The Portfolio began offering Class B shares on January 2, 1996.
</TABLE>
 
PAST PERFORMANCE IS NOT PREDICTIVE OF FUTURE PERFORMANCE.
 
- ------------------------------------------------------------
 
THE COUNTRY SPECIFIC PERFORMANCE RESULTS PROVIDED IN THIS OVERVIEW ARE AS
MEASURED BY THE MORGAN STANLEY CAPITAL INTERNATIONAL (MSCI) EMERGING MARKETS
COUNTRY OR REGIONAL INDICES ARE FOR INFORMATIONAL PURPOSES ONLY AND SHOULD NOT
BE CONSTRUED AS A GUARANTEE OF THE PORTFOLIO'S FUTURE PERFORMANCE. PAST
PERFORMANCE SHOWN IS NOT PREDICTIVE OF FUTURE PERFORMANCE. INVESTMENT RETURN AND
PRINCIPAL VALUE WILL FLUCTUATE SO THAT AN INVESTOR'S SHARES, WHEN REDEEMED, MAY
BE WORTH MORE OR LESS THAN THEIR ORIGINAL COST. PLEASE SEE THE PROSPECTUS FOR A
DESCRIPTION OF CERTAIN RISK CONSIDERATIONS ASSOCIATED WITH INTERNATIONAL
INVESTING.
 
The investment objective of the Emerging Markets Portfolio is to provide
long-term capital appreciation by investing in equity securities of emerging
country issuers.
 
For the six month period ended June 30, 1996, the Portfolio had a total return
of 20.32% for the Class A shares and 19.17% for the Class B shares, as compared
to a total return of 13.45% for the IFC Global Total Return Composite Index. The
average annual total return for the twelve months ended June 30, 1996 and for
the period from inception on September 25, 1992 through June 30, 1996 was 13.41%
and 16.93%, respectively, for the Class A shares, as compared to 8.44% and
15.99%, respectively, for the Index.
 
Politics have been the dominant theme of the second quarter of 1996. Within the
emerging market universe major elections have been held in Russia, the Czech
Republic, India, Israel and South Korea. In addition, Taiwan held presidential
elections in late March which also had a marked impact on quarterly performance.
 
Overweight positions in India, Taiwan, Russia, Mexico and Brazil and underweight
positions in Thailand, Malaysia and South Africa all contributed positively.
 
Arguably, the most important election for the Portfolio was held in Russia. The
voters had a stark choice in their first democratic election since the fall of
communism. On one side there was Boris Yeltsin and a continuation of the reform
process. On the other side there was Zyuganov and a return to old style
communism with the potential reversal of the reform process coupled with a mass
exodus by foreign investors from the embryonic stock market. The Russian people
voted decisively for Yeltsin, reform and democracy. The stock market rose over
140% during the quarter and dollar denominated Russian debt also appreciated
strongly.
 
Nobody who visits Russia can miss the raw potential of the country or the
problems which have to be tackled. The economy is close to the bottom, asset
values are attractive and the stock market will be underwritten by the
increasing foreign access to Russian securities over the coming months. Progress
has been made on inflation, which is now 60% per annum compared to 110% in 1995.
 
Concern remains, however, over Yeltsin's health although he is assembling a
strong team around him. The return of the reform-minded Chubais as chief-of-
staff is particularly positive. The well known and
 
- --------------------------------------------------------------------------------
Emerging Markets Portfolio
 
                                       22
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
 
OVERVIEW
- --------------------------------------------------------------------------------
THE EMERGING MARKETS PORTFOLIO (CONT.)
highly respected Prime Minister Chernomyrdin would temporarily succeed as
President in the event of Yeltsin's demise.
 
Although the IMF profess satisfaction that Russia has not exceeded the ceiling
on the budget deficit, tax collection has fallen dramatically and the complex
tax system cries out for simplification. In sum, we believe these and other
problems will be addressed and we remain enthusiastic about the potential of
Russia.
 
The election in India was less in danger of producing a complete change of
policy but nonetheless there was uncertainty due to the widely expected defeat
of the ruling Congress party. The new government formed by Mr. Deve Gowda's
National Front-Left Front coalition is foreign investor-friendly and has no
ambition to produce changes in economic policy.
 
The real economy in India continues to perform well. GDP growth is 7% per annum
with corporate earnings rising in excess of 25%. The July 22nd budget will be
critical in determining the direction of the stock market in the short run. We
anticipate that the domestic investor will return to the market as interest
rates continue to fall. India is currently trading at the cheap end of its
valuation range and we remain overweight.
 
Unlike Russia and India which had run-ups prior to their elections, Taiwan has
been one of the strongest performers in the last 3 months following the election
of President Lee and the easing of tensions with mainland China. The market is
supported by strong domestic liquidity and will receive a boost on its inclusion
in the MSCI indices in September.
 
The election in Israel was a breathtakingly close race between the previous
Prime Minister Shimon Peres and the Likud candidate Benjamin Netanyahu. The
election of Prime Minister Netanyahu has heralded a 20% decline in the local
Mishtanim Index due to domestic, not foreign, selling. Netanyahu is focusing on
economic reform and interest rates are moving higher to deal with above-target
inflation of 14%. Time will reveal whether concerns are justified that the
Middle East peace process will stall under the new leadership.
 
With the exception of Taiwan, Asia had a disappointing quarter. Contagion from
potential interest rate rises in the U.S. have negatively impacted Hong Kong and
Malaysia while Thailand has fallen on fears of earnings disappointment from the
financial stocks which dominate the stock market. In Indonesia, rioting in the
streets in support of President Suharto's opposition ignited fears of social
unrest in the months before the 1997 Presidential election. Korean investors
were concerned over trade and current account deficits and a slowdown in the
textile, semiconductor and auto sectors.
 
Latin America had an upbeat quarter, free from any election angst. Interest
rates are falling in Brazil, privatization is progressing, albeit slowly, and
the monopoly Telecommunications supplier Telebras had outstanding results.
Brazil continues to be the largest holding in the Portfolio. Mexico is facing
growing political and business scandals on one hand and seeing economic
recovery, lower interest rates and inflation and a stable currency on the other.
We are marginally overweight in Mexico to take advantage of the strong earnings
recovery now in evidence.
 
We have initiated a position in Egypt where the market sells on 8x 1996 earnings
estimated and, unusual, for an emerging market, has a 9% plus yield. Economic
growth is 4% in real terms and inflation is around 9%.
 
The second half of 1996 could prove a testing period for global financial
markets as interest rates move upwards in the U.S. on stronger than expected
economic growth. We are entering the third quarter with a focus on markets not
highly correlated with the U.S. such as Russia, India and Taiwan, cheap markets
with strong potential earnings growth such as Brazil, Mexico and Pakistan and
the smaller stock markets such as Peru, Chile, Egypt, Hungary and Poland.
Whatever the path of U.S. interest rates, the emerging markets should continue
to have upward momentum from here based on their relatively attractive
valuations and growth prospects.
 
Madhav Dhar
PORTFOLIO MANAGER
 
July 1996
 
- --------------------------------------------------------------------------------
                                                      Emerging Markets Portfolio
 
                                       23
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
STATEMENT OF NET ASSETS (UNAUDITED)
JUNE 30, 1996
- --------------------------------------------------------------------------------
 
THE EMERGING MARKETS PORTFOLIO
 
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>
                                                                     VALUE
    SHARES                                                           (000)
- ------------------------------------------------------------
<C>              <S>                                               <C>
COMMON STOCKS (83.4%)
  ARGENTINA (1.6%)
           (a)6  Acindar Industrial S.A., Class B................  $       --
        293,038  Quilmes Industrial S.A..........................       3,004
        159,058  Telecom Argentina S.A. ADR......................       7,456
        375,030  Telefonica de Argentina S.A. ADR................      11,064
                                                                   ----------
                                                                       21,524
                                                                   ----------
  BRAZIL (6.5%)
      (e)85,057  Cia Energetica de Minas Gerais ADR..............       2,276
     52,235,000  Eletrobras......................................      14,048
      1,542,000  Itausa Investimentos Itau S.A...................       1,183
   (d)9,268,000  Light...........................................         646
     33,680,000  Pao de Acucar...................................         557
        189,349  Pao de Acucar ADR...............................       3,136
    131,414,000  Telebras........................................       7,723
     (e)812,689  Telebras ADR....................................      56,584
   (a)8,853,162  Telecom de Sao Paulo............................       1,561
                                                                   ----------
                                                                       87,714
                                                                   ----------
  CHILE (0.1%)
         52,565  Santa Isabel S.A. ADR...........................       1,439
                                                                   ----------
  CHINA (0.5%)
        534,540  China Merchants Shekou Port Services, Class B...         235
      3,720,000  Harbin Power Equipment Co. Ltd., Class H........         558
         86,500  Jilin Chemical Co. Ltd., ADR....................       1,589
   (a)4,171,000  Shenzen North Jainshe Motorcycle Co., Ltd.,
                   Class B.......................................       1,455
     13,658,000  Yizheng Chemical Fibre Co., Class H.............       3,017
                                                                   ----------
                                                                        6,854
                                                                   ----------
  COLOMBIA (0.4%)
     12,728,000  Banco de Colombia...............................       4,831
                                                                   ----------
  EGYPT (0.4%)
         47,000  Ameriyah Cement Co..............................         638
         15,984  Commercial International Bank...................       1,974
         82,310  Eastern Tobacco.................................         896
         49,350  Egyptian Finance & Industrial...................         521
         71,000  Hewlan Cement...................................         667
         10,000  Madinet Nasr Housing & Development..............         264
         21,655  North Cairo Flour Mills.........................         509
         25,800  Torah Portland Cement...........................         338
                                                                   ----------
                                                                        5,807
                                                                   ----------
  GREECE (1.2%)
     (a)405,969  Aegek Ltd.......................................       2,701
         11,666  Alpha Credit Bank of Athens (RFD)...............         616
        216,575  Delta Dairy.....................................       2,648
        108,000  Ergo Bank.......................................       5,951
 
<CAPTION>
                                                                     VALUE
    SHARES                                                           (000)
- ------------------------------------------------------------
<C>              <S>                                               <C>
        142,000  Hellenic Bottling Co............................  $    4,718
                                                                   ----------
                                                                       16,634
                                                                   ----------
  HONG KONG (6.3%)
      1,613,000  Cheung Kong Holdings Ltd........................      11,617
      5,085,600  China International Marine Container, Class B...       4,402
      2,145,000  Citic Pacific Ltd...............................       8,673
      9,561,000  C.P. Pokphand Co., Ltd..........................       3,798
   (a)2,468,000  Great Wall Electronics International............         179
      9,331,000  Guangdong Investments Ltd.......................       5,907
      (a)60,000  Guangshen Railway Co., Ltd., ADR................       1,148
      3,005,000  Hong Kong Telecommunications Ltd................       5,396
        116,000  Hopewell Holdings Ltd...........................          63
      1,779,000  Hutchison Whampoa Ltd...........................      11,192
      1,404,000  New World Development Co., Ltd..................       6,511
        162,400  Shandong Huaneng Power Co., Ltd., ADR...........       1,340
        601,000  Sun Hung Kai Properties Ltd.....................       6,075
      1,167,000  Swire Pacific Ltd., Class A.....................       9,988
  (a)10,502,000  Tingyi (Cayman Islands) Holding Co..............       2,883
      1,608,000  Varitronix International Ltd....................       3,355
      7,998,000  Zhenhai Refining & Chemical Co., Ltd., Class
                   H.............................................       2,273
                                                                   ----------
                                                                       84,800
                                                                   ----------
  HUNGARY (0.1%)
      (a)16,100  Cofinec S.A. GDR (Registered)...................         769
                                                                   ----------
  INDIA (11.0%)
        188,400  Andhra Valley Power Supply Co., Ltd.............         766
        230,000  American Dry Fruits.............................         103
        450,100  Apollo Tyres Ltd................................       2,316
        100,000  AP Rayon Ltd., Class B..........................         241
         67,200  Aruna Sugars & Enterprises......................          43
        124,328  Associated Cement Companies Ltd.................       8,520
        891,500  Balaji Foods & Feeds............................         196
        165,984  Bharat Forge Co., Ltd., Class A.................         839
         33,571  Bharat Forge Co., Ltd. (New)....................         170
      3,473,500  Bharat Heavy Electricals........................      17,698
     (a)374,600  Bharat Pipes & Fittings Ltd., Class B...........          43
     (a)125,000  Bharat Pipes & Fittings Ltd. (New)..............          14
         86,400  BPL Ltd.........................................         150
        141,642  Carrier Aircon Ltd..............................       1,019
     (a)200,500  Ceat Ltd........................................         541
          8,780  Century Textiles and Industries Ltd.............       1,352
        858,400  Container Corp. of India Ltd....................       5,117
         86,000  Cosmo Films Ltd.................................         296
        380,100  Crompton Greaves................................       2,705
         42,000  Dabur India Ltd.................................         281
        257,900  DCL Polyesters Ltd..............................         121
         77,000  DCM Shriram Industries Ltd......................          82
</TABLE>
 
The accompanying notes are an integral part of the financial statements. (Pages
                                    182-188)
 
- --------------------------------------------------------------------------------
Emerging Markets Portfolio
 
                                       24
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
STATEMENT OF NET ASSETS (UNAUDITED)
JUNE 30, 1996
- --------------------------------------------------------------------------------
 
THE EMERGING MARKETS PORTFOLIO (CONT.)
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>
                                                                     VALUE
    SHARES                                                           (000)
- ------------------------------------------------------------
<C>              <S>                                               <C>
</TABLE>
 
  INDIA (CONT.)
<TABLE>
<C>              <S>                                               <C>
         38,800  Delta Industries Ltd............................  $       38
        185,000  Esab India Ltd..................................         464
         50,000  Essel Packagings Ltd............................         244
      (a)98,700  Federal Bank Ltd................................         568
          5,950  Federal Bank Ltd. (New).........................          34
         15,586  Flex Industries Ltd., Class B...................          65
          4,900  Fuller Kep......................................          21
        200,300  Garware Plastics & Polyester....................       1,112
        376,700  Garware Plastics & Polyester, Class A...........       2,090
        712,500  Godrej Soaps Ltd................................       1,062
      2,803,300  Great Eastern Shipping Co.......................       4,018
        349,900  Gujarat Ambuja Cements, Ltd.....................       3,715
         75,100  Gujurat Narmada Valley Fertilizers Co., Ltd.....          83
        254,000  Hero Honda, Class B.............................       2,028
        817,500  Hindustan Development Corp. Ltd.................         566
        126,206  Housing Development Finance Corp................      10,525
        122,750  ICI India Ltd...................................         718
        155,100  ITC Agrotech Ltd., Class B......................         194
        500,913  ITC Bhadrachalam (New)..........................       1,507
        191,750  ITC Bhadrachalam Paperboards, Ltd...............         577
        158,400  ITC Ltd.........................................       1,402
  (a,f,g)78,000  India Magnum Fund, Ltd., (The) Class A (acquired
                   11/25/92-3/1/94, Cost $3,872).................       4,056
    (a,g)55,194  India Magnum Fund, Ltd., (The) Class B..........       2,870
        644,625  India Organic Chemical Ltd......................         375
      1,000,000  Indian Petrochemicals Corp. Ltd.................       4,421
      (a)40,000  Indian Seamless Steel & Alloys..................           9
        571,047  Indo Rama Synthetics............................         697
        171,154  Indo Rama Synthetics (New)......................         209
        911,800  Industrial Finance Corp. of India...............       1,203
        100,000  Infosys Technology Ltd..........................       2,030
          5,292  JCT Ltd. GDR....................................          21
   (a)1,500,277  JK Synthetics Ltd...............................         926
        440,000  KEC International Ltd...........................       1,642
        110,200  Kirloskar Oil Engines Ltd., Class B.............         282
             75  Lakme Ltd., Class B.............................           1
        150,000  Lakshmi Precision Screws........................         236
     (a)145,000  Laser Lamp Ltd..................................         136
          1,760  Madras Cement Ltd...............................         615
        798,800  Mahanagar Telephone Nigam.......................       5,753
        106,484  Mahavir Spinning Mills Ltd......................         272
     (a)300,700  Maikaal Fibres..................................          68
         26,500  Mardia Chemicals Ltd............................          30
         10,000  Modi Xerox Ltd..................................          41
(a,g)19,782,100  Morgan Stanley Growth Fund......................       3,875
    (a,g)19,389  Morgan Stanley India Investment Fund, Inc.......         216
         73,581  MRF Ltd., Class B...............................       7,367
         25,000  OM Sindoori Hotels Ltd..........................          59
<CAPTION>
                                                                     VALUE
    SHARES                                                           (000)
- ------------------------------------------------------------
<C>              <S>                                               <C>
        350,000  Patheja Forgings & Auto Parts, Class B..........  $      785
        318,523  PCS Data Products Ltd., Class B.................          82
        218,500  Philips India Ltd...............................         802
     (a)135,500  Polar Latex.....................................          37
     (a)232,700  Priyadarshini Cement Ltd., Class B..............         180
     (a)350,000  PVD Plastic Mouldings Inds. Ltd., Class B.......         137
            129  Ranbaxy Laboratories Ltd., Class B..............           2
        209,750  Raymond Ltd.....................................       2,017
     (a,e)3,770  Reliance Industries Ltd. GDS....................          49
         73,581  Reliance Industries Ltd. GDS (New)..............         957
      (d)84,500  Rossell Industries Ltd..........................          89
      (d)25,350  Rossell Tea Ltd.................................          --
      1,021,700  Sanghi Polyesters Ltd...........................         505
            200  SCICI Ltd. (Bonus Shares).......................          --
            400  SCICI Ltd., Class B.............................           1
        135,400  Shanti Gears Ltd................................         904
      (a)73,200  Sharp Industries Ltd............................          32
        697,500  Shipping Corp. of India.........................         733
        150,636  Shree Vindhya Paper Mills.......................         235
            115  S.K.F. Bearings Ltd.............................          10
         45,000  Sri Venkatesa Mills Ltd.........................         141
      1,455,150  State Bank of India.............................      12,402
         37,250  Sudarshan Chemical Industries Ltd...............         148
        725,950  Super Forgings & Steels.........................         278
        406,212  Tata Engineering & Locomotive, Class A..........       5,996
        117,200  Tata Hydro Electric Power.......................         476
        176,600  Tata Iron & Steel Co., Ltd......................       1,214
          1,330  Tata Power Co., Ltd.............................           7
         12,800  Thiru Arooran Sugars Ltd........................          47
         75,000  Titagarh Steels Ltd.............................          49
        196,100  Tube Investments of India.......................         675
          1,676  United Phosphorus Ltd. GDR......................          20
        783,000  Uttam Steels Ltd., Class A......................         440
        783,000  Uttam Steels Ltd. (New).........................         440
            300  Videocon International Ltd., Class A............           1
        182,600  Videsh Sanchar Nigam Ltd........................       6,997
        710,040  VXL Ltd.........................................         474
         89,600  Wartsila Diesel Ltd.............................         924
                                                                   ----------
                                                                      149,340
                                                                   ----------
  INDONESIA (5.7%)
      1,107,500  Bank Internasional Indonesia (Foreign)..........       5,472
   (d)2,770,500  Barito Pacific Timber (Foreign).................       1,815
   (d)3,189,000  Bimantara Citra (Foreign).......................       4,008
     (d)305,598  Charoen Pokphand (Foreign)......................         591
 (a,d)2,982,000  Gudang Garam (Foreign)..........................      12,780
     (d)772,500  Hanajaya Mandala Sampoerna (Foreign)............       8,795
   (d)6,067,500  Indah Kiat Pulp & Paper Corp. (Foreign).........       5,931
     (d)817,500  Indocement Tunggal (Foreign)....................       2,810
</TABLE>
 
The accompanying notes are an integral part of the financial statements. (Pages
                                    182-188)
 
- --------------------------------------------------------------------------------
                                                      Emerging Markets Portfolio
 
                                       25
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
STATEMENT OF NET ASSETS (UNAUDITED)
JUNE 30, 1996
- --------------------------------------------------------------------------------
 
THE EMERGING MARKETS PORTFOLIO (CONT.)
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>
                                                                     VALUE
    SHARES                                                           (000)
- ------------------------------------------------------------
<C>              <S>                                               <C>
</TABLE>
 
  INDONESIA (CONT.)
<TABLE>
<C>              <S>                                               <C>
     (d)988,000  Indosat (Foreign)...............................  $    3,322
   (d)1,017,200  Kalbe Farma (Foreign)...........................       2,273
   (a,d)729,500  Semen Gresik (Foreign)..........................       2,123
     (d)813,000  Sorini Corp. (Foreign)..........................       4,471
  (d)14,781,000  Telekomunikasi Indonesia (Foreign)..............      22,386
     (d)373,000  United Tractors (Foreign).......................         589
                                                                   ----------
                                                                       77,366
                                                                   ----------
  ISRAEL (2.5%)
        114,145  ELBIT...........................................       6,801
          5,250  First International Bank of Israel, Class 1.....         549
         32,557  First International Bank of Israel, Class 5.....       3,632
     (a)542,350  Israel Land Development Co......................       1,332
        107,925  Koor Industries Ltd.............................       9,147
        761,177  Osem Investment Ltd.............................       4,481
      (a)80,000  PEC Israel Economic Corp........................       1,450
         54,397  Scitex Corp.....................................         938
        207,140  Super Sol Ltd., Class B.........................       4,406
         20,000  Teva Pharmaceutical Industries Ltd., ADR........         758
                                                                   ----------
                                                                       33,494
                                                                   ----------
  KOREA (2.7%)
     (a,d)8,410  Chosun Brewery Co., Ltd.........................         287
        286,590  Housing & Commercial Bank, Korea................       7,879
        145,780  Korea Electric Power (Foreign)..................       5,887
     (a)208,000  Korea Mobile Telecommunications ADR.............       3,562
       (d)2,150  Korea Mobile Telecommunications (Foreign).......       2,544
       (d)7,890  Pohang Iron & Steel (Foreign)...................         644
         15,170  Samsung Electronics GDS (New)...................         785
         79,670  Samsung Electronics (Foreign)...................       6,688
         24,011  Samsung Electronics (RFD).......................       2,016
     (d)193,289  Shinhan Bank (Foreign)..........................       4,514
         63,000  Yukong Ltd. (Foreign)...........................       1,848
                                                                   ----------
                                                                       36,654
                                                                   ----------
  MEXICO (9.4%)
      1,112,132  Alfa S.A. de C.V., Class A......................       4,994
        616,212  Apasco S.A., Class A............................       3,401
   (a)5,730,000  Banacci, Class B................................      11,910
     (a)966,104  Banacci, Class L................................       1,835
   (a,e)922,357  Cemex S.A. de C.V. CPO ADR......................       6,377
      2,871,970  Cemex S.A. de C.V., Class A.....................      10,189
   (a)1,398,360  Cifra S.A. de C.V., Class B.....................       2,018
   (a)3,588,750  Cifra S.A. de C.V., Class C.....................       5,121
     (a)255,019  Empresas ICA S.A. ADR...........................       3,538
      6,403,210  FEMSA, Class B..................................      18,156
   (a,e)295,750  Grupo Carso S.A. ADR............................       4,191
 (a,e)1,503,890  Grupo Financiero Bancomer ADR...................      12,971
  (a)13,217,475  Grupo Financiero Bancomer, Class B..............       5,752
<CAPTION>
                                                                     VALUE
    SHARES                                                           (000)
- ------------------------------------------------------------
<C>              <S>                                               <C>
     (a)265,725  Grupo Televisa S.A. ADR.........................  $    8,171
        161,828  Panamerican Beverages, Inc., Class A............       7,201
        641,915  Telefonos de Mexico S.A. ADR, Class L...........      21,504
                                                                   ----------
                                                                      127,329
                                                                   ----------
  MOROCCO (1.3%)
         20,000  BMCE............................................         894
          5,714  BMCE (Bonus Shares) (RFD).......................         255
         55,123  Groupe Ona......................................       2,528
        164,500  SNI Maroc, Series 'V' (Bearer)..................      10,372
         58,221  Wafabank........................................       2,710
                                                                   ----------
                                                                       16,759
                                                                   ----------
  PAKISTAN (2.7%)
         41,816  Adamjee Insurance Co., Ltd......................         166
     (a)142,649  Cherat Cement Ltd...............................         104
          1,814  Crescent Investment Bank........................           1
          6,741  Cresent Textile Mills Ltd.......................           3
      2,288,000  D.G. Khan Cement Ltd............................         909
        803,700  Dewan Salman Fibre..............................         961
      3,827,200  Fauji Fertilizer Co., Ltd.......................       9,840
   (a)2,068,660  Karachi Electric Supply Corp....................       2,172
     (a)113,127  Muslim Commercial Bank Ltd......................         121
   (a)1,256,519  Nishat Mills Ltd................................         503
        358,020  Pakistan State Oil Co., Ltd.....................       4,224
     (a)101,550  Pakistan Telecommunications.....................      11,604
      (a)27,900  Pakistan Telecommunications GDR.................       3,292
   (a)2,694,960  Sui Northern Gas................................       3,080
     (a)298,000  Zahur Textile Mills.............................          11
                                                                   ----------
                                                                       36,991
                                                                   ----------
  PERU (0.0%)
             42  Cementos Lima S.A...............................          --
                                                                   ----------
  PHILIPPINES (3.5%)
      2,134,562  Ayala Land, Inc., Class B.......................       3,829
      7,016,700  C&P Homes, Inc..................................       6,093
   (a)5,688,300  DMCI Holdings, Inc..............................       4,071
     20,878,830  JG Summit Holding, Class B......................       7,810
        696,078  Manila Electric Co., Class B....................       7,306
     11,690,670  Petron Corp.....................................       5,355
        131,385  Philippine Long Distance Telephone Co., Class
                   B.............................................       7,823
         22,700  San Miguel Corp., Class B.......................          78
     18,505,041  SM Prime Holdings, Inc., Class B................       4,803
                                                                   ----------
                                                                       47,168
                                                                   ----------
  POLAND (1.2%)
         68,000  BRE Bank S.A....................................       1,777
      (a)85,960  Debica..........................................       2,088
         33,400  Eastbridge N.V..................................       2,245
        506,000  Elektrim........................................       4,153
      (a)17,314  Exbud S.A.......................................         185
   (a)2,085,038  International UNP Holdings......................         764
        373,740  Mostostal Exports S.A...........................       1,279
     (a)191,000  Polifarb Wroclaw S.A............................         963
</TABLE>
 
The accompanying notes are an integral part of the financial statements. (Pages
                                    182-188)
 
- --------------------------------------------------------------------------------
Emerging Markets Portfolio
 
                                       26
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
STATEMENT OF NET ASSETS (UNAUDITED)
JUNE 30, 1996
- --------------------------------------------------------------------------------
 
THE EMERGING MARKETS PORTFOLIO (CONT.)
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>
                                                                     VALUE
    SHARES                                                           (000)
- ------------------------------------------------------------
<C>              <S>                                               <C>
</TABLE>
 
  POLAND (CONT.)
<TABLE>
<C>              <S>                                               <C>
      (a)56,500  Rafako S.A......................................  $      335
         11,125  Wedel S.A.......................................         500
         22,135  Zywiec..........................................       1,711
                                                                   ----------
                                                                       16,000
                                                                   ----------
  PORTUGAL (0.1%)
     (a)120,000  Lusomundo SGPS S.A..............................         745
                                                                   ----------
  RUSSIA (6.9%)
        592,359  Alliance Cellulose Ltd..........................      12,511
     (a)400,000  Global Tele-Systems Group, Inc. (Registered)....       5,400
  (a)54,315,000  Irkutskenergo...................................       6,301
         80,000  LUKoil Co. ADR..................................       3,420
     (a)710,100  LUKoil Holding..................................       7,811
   (a,e)275,730  LUKoil Holding GDR..............................      11,787
     16,490,000  Mosenergo.......................................      14,676
        317,851  Russian Telecom Development Corp................       3,179
   (a)3,528,500  Rostelecom......................................       8,468
            990  Storyfirst Communications, Inc., Class C........         660
          2,640  Storyfirst Communications, Inc., Class D........       1,980
          3,250  Storyfirst Communications, Inc., Class E........       3,250
          1,331  Storyfirst Communications, Inc., Class F........       3,328
 (a)112,039,000  United Energy System............................      10,531
                                                                   ----------
                                                                       93,302
                                                                   ----------
  SINGAPORE (0.3%)
   (a)1,576,000  Want Want Holdings..............................       4,239
                                                                   ----------
  SOUTH AFRICA (3.8%)
        825,000  Amalgamated Banks of South Africa...............       4,570
         81,050  Anglo American Industrial Corp..................       3,255
        835,000  Barlow Rand Ltd.................................       8,720
        704,480  Bidvest.........................................       4,211
        155,500  Dreifontein Consolidated Ltd....................       2,082
        500,000  Gencor..........................................       1,846
        240,000  Metro Cash and Carry............................         928
     (g)224,490  Morgan Stanley Africa Investment Fund, Inc......       2,806
        800,000  Spur Holdings...................................       1,662
        915,000  Sage Group Ltd..................................       4,392
      1,584,146  Sasol Ltd.......................................      17,183
                                                                   ----------
                                                                       51,655
                                                                   ----------
  TAIWAN (5.5%)
   (a)2,622,200  Acer, Inc.......................................       3,907
      2,170,000  Cathay Life Insurance Co., Ltd..................      15,297
     10,492,000  China Steel Corp................................      10,980
        109,000  Far East Textiles...............................         127
      2,669,000  Hua Nan Commercial Bank.........................      14,063
   (a)1,900,576  Mosel Vitelic Ltd...............................       2,673
   (a)5,007,240  Taiwan Semiconductor Manufacturing Co...........      10,462
<CAPTION>
                                                                     VALUE
    SHARES                                                           (000)
- ------------------------------------------------------------
<C>              <S>                                               <C>
      4,196,262  United Micro Electronics Corp., Ltd.............  $    6,221
      7,187,000  Yang Ming Marine Transport......................      10,603
                                                                   ----------
                                                                       74,333
                                                                   ----------
  THAILAND (4.3%)
        298,550  Advanced Information Services PCL (Foreign).....       4,422
        826,700  Bangkok Bank Ltd. (Foreign).....................      11,203
      1,914,500  Finance One Co., Ltd. (Foreign).................      12,369
        516,000  National Finance & Securities Co., Ltd.
                   (Foreign).....................................       2,297
        210,600  Shinawatra Computer Co., Ltd. (Foreign).........       4,563
        922,100  Siam Commercial Bank (Foreign)..................      13,367
        941,300  Thai Farmers Bank, Ltd. (Foreign)...............      10,309
                                                                   ----------
                                                                       58,530
                                                                   ----------
  TURKEY (5.0%)
     11,523,826  Aksa............................................       2,421
      7,127,500  Arcelik.........................................         660
      2,868,000  Bagfas..........................................         777
     20,954,000  Borusan.........................................       1,736
     21,272,000  Bossa...........................................       2,151
     10,830,000  Demirbank.......................................         369
     33,495,180  Ege Biracilik...................................      15,299
  (a)27,600,000  Ege Seramik.....................................       1,109
      6,002,000  Erciyas Biracilik...............................       3,399
     90,315,000  Eregli Demir Celik..............................      10,011
      1,929,000  Guney Biracilik Ve Malt Sanayii.................         446
      4,498,200  Migros (Registered).............................       3,945
     85,761,000  Sabah...........................................       2,376
     17,140,000  Sarkuysan.......................................       1,294
     11,582,377  Tat Konserve Sanayii............................       2,716
     60,166,750  Tofas Turk Otomobil Fabrikasi...................       2,895
        872,004  Tofas Turk Otomobil Fabrikasi GDS (Euro)........         296
     75,413,051  Trakya Cam Sanayii..............................       4,133
        784,075  Turcas Petroculuk A.S...........................         229
     (e)496,085  Turkiye Garanti Bankasi ADR.....................       3,381
  (e)20,220,000  Garanti Bankasi.................................       1,379
     25,275,000  Garanti Bankasi (RFD)...........................       1,598
    105,732,000  Yapi Ve Kredi Bankasi A.S.......................       2,994
     84,777,000  Yapi Ve Kredi Bankasi (New).....................       2,194
                                                                   ----------
                                                                       67,808
                                                                   ----------
  UNITED KINGDOM (0.2%)
        923,406  Lonrho plc......................................       2,645
                                                                   ----------
  ZIMBABWE (0.2%)
   (e)1,980,000  Trans Zambezi Industries Ltd....................       2,970
         35,281  Trans Zambezi Industries Ltd. (Registered)......          53
                                                                   ----------
                                                                        3,023
                                                                   ----------
TOTAL COMMON STOCKS (Cost $1,030,690)............................   1,127,753
                                                                   ----------
</TABLE>
 
The accompanying notes are an integral part of the financial statements. (Pages
                                    182-188)
 
- --------------------------------------------------------------------------------
                                                      Emerging Markets Portfolio
 
                                       27
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
STATEMENT OF NET ASSETS (UNAUDITED)
JUNE 30, 1996
- --------------------------------------------------------------------------------
 
THE EMERGING MARKETS PORTFOLIO (CONT.)
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>
                                                                     VALUE
    SHARES                                                           (000)
- ------------------------------------------------------------
<C>              <S>                                               <C>
PREFERRED STOCKS (7.5%)
  BRAZIL (NON-VOTING STOCKS) (7.5%)
  2,681,989,448  Banco Bradesco S.A..............................  $   21,906
 (d)295,998,880  Banco Nacional S.A..............................          15
  (d)45,404,030  Brahma..........................................      27,090
        620,000  Brasmotor S.A...................................         194
    113,996,103  Cia Energetica de Minas Gerais..................       3,032
     16,920,850  Eletrobras, Class B.............................       4,837
     31,539,800  Itaubanco.......................................      12,817
     85,278,333  Petrobras.......................................      10,490
         12,500  Sadia Concordia.................................           9
 (d)258,769,000  Telebras........................................      18,068
      7,058,615  Telecom de Sao Paulo............................       1,512
 (e)526,000,000  Usiminas........................................         555
                                                                   ----------
                                                                      100,525
                                                                   ----------
  GREECE (0.0%)
      (a)69,738  Aegek...........................................         361
                                                                   ----------
  INDIA (0.0%)
          2,700  Fabworth (India) Ltd............................           1
                                                                   ----------
  PORTUGAL (0.0%)
         35,340  Lusomundo SGPS..................................         283
                                                                   ----------
TOTAL PREFERRED STOCKS (Cost $81,333)............................     101,170
                                                                   ----------
<CAPTION>
    NO. OF
    RIGHTS
- ---------------
<C>              <S>                                               <C>
RIGHTS (0.1%)
  BRAZIL (0.0%)
   (a)2,659,295  Brahma..........................................          --
     (a)105,758  Lojas Americanas S.A. (Bonus Shares Plan).......          --
                                                                   ----------
                                                                           --
                                                                   ----------
  INDIA (0.0%)
     (a,d)9,610  Baroda Rayon Corp.,.............................          --
         (a)204  Indo Rama Synthetics............................          --
   (a,d)155,100  ITC Agrotech Ltd................................          --
                                                                   ----------
                                                                           --
                                                                   ----------
  POLAND (0.0%)
     (a)373,740  Mostostal Exports, expiring 8/14/96.............          23
                                                                   ----------
  TURKEY (0.1%)
   (a)8,687,000  Tat Konserve, expiring 7/24/96..................       1,287
                                                                   ----------
TOTAL RIGHTS (Cost $9)...........................................       1,310
                                                                   ----------
<CAPTION>
 
    NO. OF
   WARRANTS
- ---------------
<C>              <S>                                               <C>
WARRANTS (0.1%)
  INDIA (0.1%)
    (a,d)86,414  Apollo Tyres Ltd................................         185
    (a,d)27,383  Flex Industries Ltd., expiring 11/23/97.........         103
<CAPTION>
    NO. OF                                                           VALUE
    RIGHTS                                                           (000)
- ------------------------------------------------------------
<C>              <S>                                               <C>
    (a,d)44,639  Garware Plastics & Polyesters, expiring
                   4/04/98.......................................  $      359
                                                                   ----------
TOTAL WARRANTS (Cost $163).......................................         647
                                                                   ----------
<CAPTION>
     FACE
    AMOUNT
     (000)
- ---------------
<C>              <S>                                               <C>
CONVERTIBLE DEBENTURES (0.5%)
  COLOMBIA (0.4%)
 U.S.$ (e)5,615  Banco de Colombia 5.20%, 2/01/99................       5,019
                                                                   ----------
  INDIA (0.1%)
  INR (d)33,574  DCM Shriram Industries Ltd. 15.00%, 3/02/02.....         397
          1,650  Indian Seamless Steel & Alloys 10.00%,
                   7/13/96.......................................          30
       (d)1,467  Mahavir Spinning Mills Ltd., Series A 15.40%,
                   3/22/00.......................................          35
      (d)50,000  Raymond Ltd. 16.00%, 12/31/99...................       1,262
  U.S.$     130  Tata Iron & Steel Co., Ltd. 2.25%, 4/01/99......         124
                                                                   ----------
                                                                        1,848
                                                                   ----------
TOTAL CONVERTIBLE DEBENTURES (Cost $7,788).......................       6,867
                                                                   ----------
NON-CONVERTIBLE DEBENTURES (0.2%)
  INDIA (0.2%)
  INR  (d)3,357  Bharat Forge Co., Ltd. 14.50%, 4/18/02..........          38
      (d)34,055  DCM Shriram Industries Ltd., 9.90%, 2/21/01.....         532
       (d)4,470  Garware Plastics & Polyester 16.00%, 4/04/98....         113
      (d)70,000  Saurashtra Cement & Chemicals Ltd. 18.00%,
                   11/27/98......................................       1,987
                                                                   ----------
TOTAL NON-CONVERTIBLE DEBENTURES (Cost $3,426)...................       2,670
                                                                   ----------
LOAN AGREEMENTS (0.3%)
  POLAND (0.0%)
 U.S.$    (e)54  Republic of Poland Interest Arrears PDI Bonds,
                   (Floating Rate), 3.75%, 10/27/14..............          41
                                                                   ----------
  RUSSIA (0.3%)
  CHF (b)11,910  Bank for Foreign Economic Affairs (Floating
                   Rate).........................................       4,504
                                                                   ----------
TOTAL LOAN AGREEMENTS (Cost $3,270)..............................       4,545
                                                                   ----------
TOTAL FOREIGN SECURITIES (92.1%) (Cost $1,126,679)...............   1,244,962
                                                                   ----------
SHORT-TERM INVESTMENTS (7.1%)
  U.S. GOVERNMENT & AGENCY OBLIGATION (2.2%)
 U.S.$   30,000  Federal Home Loan Mortgage Corp., Discount Note,
                   8/19/96.......................................      29,782
                                                                   ----------
  REPURCHASE AGREEMENT (4.9%)
         66,747  Chase Securities, Inc. 5.15%, dated 6/28/96, due
                   7/01/96, to be repurchased at $66,776,
                   collateralized by $65,570 U.S. Treasury Notes,
                   7.125%, due 9/30/99, valued at $67,035 (Cost
                   $66,747)......................................      66,747
                                                                   ----------
TOTAL SHORT-TERM INVESTMENTS (Cost $96,533)......................      96,529
                                                                   ----------
</TABLE>
 
The accompanying notes are an integral part of the financial statements. (Pages
                                    182-188)
 
- --------------------------------------------------------------------------------
Emerging Markets Portfolio
 
                                       28
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
STATEMENT OF NET ASSETS (UNAUDITED)
JUNE 30, 1996
- --------------------------------------------------------------------------------
 
THE EMERGING MARKETS PORTFOLIO (CONT.)
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>
    AMOUNT                                                           VALUE
     (000)                                                           (000)
- ------------------------------------------------------------
<C>              <S>                                               <C>
FOREIGN CURRENCY (1.8%)
   ARP        4  Argentine Peso..................................  $        4
   BRC      204  Brazilian Real..................................         203
   COP   32,754  Colombian Peso..................................          31
   EGP      356  Egyptian Pound..................................         356
   HKD    5,608  Hong Kong Dollar................................         725
   HUF   59,707  Hungarian Forint................................         398
  INR   139,945  Indian Rupee....................................       3,972
  IDR 4,646,445  Indonesian Rupiah...............................       1,996
 ISS      2,034  Israeli Shekel..................................           1
   KRW   99,338  Korean Won......................................         122
    MYR       1  Malaysian Ringgit...............................          --
    MXP      21  Mexican Peso....................................           3
    MAD   2,736  Morrocan Dhiram.................................         314
   PKR   96,546  Pakistan Rupee..................................       2,758
  PSS         8  Peruvian Sol....................................           4
   PHP        9  Philippine Peso.................................          --
   PLZ      280  Poland Zloty....................................         103
   ZAR    1,957  South African Rand..............................         452
   TWD  353,530  Taiwan Dollar...................................      12,846
  TRL 9,750,389  Turkish Lira....................................         119
                                                                   ----------
TOTAL FOREIGN CURRENCY (Cost $24,632)............................      24,407
                                                                   ----------
TOTAL INVESTMENTS (101.0%) (Cost $1,247,844).....................   1,365,898
                                                                   ----------
</TABLE>
<TABLE>
<S>                                                 <C>       <C>
OTHER ASSETS (1.3%)
  Receivable for Investments Sold.................  $ 10,773
  Dividends Receivable............................     5,643
  Receivable for Portfolio Shares Sold............       607
  Interest Receivable.............................       357
  Foreign Withholding Tax Reclaim Receivable......        79
  Net Unrealized Gain on Forward Foreign Currency          1
   Exchange Contracts.............................
  Other...........................................       305      17,765
                                                    --------
LIABILITIES (-2.3%)
  Payable for Investments Purchased...............   (19,937)
  Deferred India Taxes Payable....................    (4,394)
  Investment Advisory Fees Payable................    (3,850)
  Bank Overdraft..................................    (1,810)
  Custodian Fees Payable..........................      (743)
  Administrative Fees Payable.....................      (164)
  Payable for Portfolio Shares Redeemed...........      (121)
  Payable for India Stamp Duty Tax................       (65)
  Payable for India Taxes.........................       (35)
  Sub-Administrative Fees Payable.................       (30)
  Directors' Fees and Expenses Payable............       (18)
  Distribution Fees Payable.......................        (8)
  Other Liabilities...............................      (372)    (31,547)
                                                    --------  ----------
NET ASSETS (100%)...........................................  $1,352,116
                                                              ----------
                                                              ----------
 
<CAPTION>
 
                                                                AMOUNT
                                                                (000)
- ------------------------------------------------------------
<S>                                                 <C>       <C>
NET ASSETS CONSIST OF:
Paid in Capital.............................................  $1,237,524
Undistributed Net Investment Income.........................       9,679
Accumulated Net Realized Loss...............................      (8,774)
Unrealized Appreciation on Investments and Foreign Currency      113,687
  Translations (Net of accrual for India tax of $4,394 on
  unrealized appreciation on investments)...................
                                                              ----------
NET ASSETS..................................................  $1,352,116
                                                              ----------
                                                              ----------
<CAPTION>
 
CLASS A:
- --------------------------------------------------
<S>                                                 <C>       <C>
NET ASSETS..................................................  $1,337,315
NET ASSET VALUE, OFFERING AND REDEMPTION
  PRICE PER SHARE
  Applicable to 84,598,024 outstanding $0.001 par value           $15.81
  shares (authorized 500,000,000 shares)....................
                                                                   -----
                                                                   -----
<CAPTION>
 
CLASS B:
- --------------------------------------------------
<S>                                                 <C>       <C>
NET ASSETS..................................................     $14,801
NET ASSET VALUE, OFFERING AND REDEMPTION
  PRICE PER SHARE
  Applicable to 937,158 outstanding $0.001 par value shares       $15.79
  (authorized 500,000,000 shares)...........................
                                                                   -----
                                                                   -----
- ------------------------------------------------------------
</TABLE>
 
FORWARD FOREIGN CURRENCY EXCHANGE CONTRACT INFORMATION:
  Under the terms of forward foreign currency exchange contracts open at June
  30, 1996, the Portfolio is obligated to deliver or is to receive foreign
  currency in exchange for U.S. dollars or foreign currency as indicated below:
 
<TABLE>
<CAPTION>
                                                                       NET
CURRENCY TO                            IN EXCHANGE                 UNREALIZED
  DELIVER       VALUE     SETTLEMENT       FOR         VALUE       GAIN (LOSS)
   (000)        (000)        DATE         (000)        (000)          (000)
- -----------     -----     -----------  -----------     -----     ---------------
<S>          <C>          <C>          <C>          <C>          <C>
U.S.$ 189     $     189      7/01/96   ISS    608    $     190      $       1
U.S.$ 753           753      7/03/96   THB 19,116          753             --
                  -----                                  -----          -----
              $     942                              $     943      $       1
                  -----                                  -----          -----
                  -----                                  -----          -----
</TABLE>
<TABLE>
<S>        <C>        <C>
- ------------------------------------------------
(a)        --         Non-income producing security
(b)        --         Non-income producing security -- in
                      default
(d)        --         Securities (totaling $130,802 or 9.7% of
                      net assets at June 30, 1996) valued at
                      fair value -- See note A-1 to financial
                      statements
(e)        --         144A Security -- Certain conditions for
                      public sale may exist
(f)        --         Restricted as to public resale. Total
                      value of restricted securities at June
                      30, 1996 was $4,056 or 0.30% of net
                      assets. (Total cost $3,872)
(g)        --         The fund is advised by an affiliate
ADR        --         American Depositary Receipt
GDR        --         Global Depositary Receipt
GDS        --         Global Depositary Shares
CPO        --         Ordinary Participating Certificates (no
                      voting rights)
PCL        --         Public Company Limited
PDI        --         Past Due Interest
RFD        --         Ranked for Dividend
THB        --         Thai Baht
 
<CAPTION>
- ---------------------------------------------------------------
</TABLE>
 
The accompanying notes are an integral part of the financial statements. (Pages
                                    182-188)
 
- --------------------------------------------------------------------------------
                                                      Emerging Markets Portfolio
 
                                       29
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
STATEMENT OF NET ASSETS (UNAUDITED)
JUNE 30, 1996
- --------------------------------------------------------------------------------
 
THE EMERGING MARKETS PORTFOLIO (CONT.)
- --------------------------------------------------------------------------------
 
            SUMMARY OF FOREIGN SECURITIES BY INDUSTRY CLASSIFICATION
 
<TABLE>
<CAPTION>
                                                      PERCENT
                                            VALUE     OF NET
INDUSTRY                                    (000)     ASSETS
<S>                                       <C>         <C>
- -------------------------------------------------------------
Capital Equipment.......................  $   94,789      7.0%
Consumer Goods..........................     178,215     13.2
Energy..................................     116,923      8.6
Finance.................................     305,545     22.6
Gold Mines..............................       2,081      0.2
Loan Agreements.........................       4,545      0.3
Materials...............................     127,875      9.5
Multi-Industry..........................     147,360     10.9
Services................................     267,629     19.8
                                          ----------  -------
                                          $1,244,962     92.1%
                                          ----------  -------
                                          ----------  -------
</TABLE>
 
The accompanying notes are an integral part of the financial statements. (Pages
                                    182-188)
 
- --------------------------------------------------------------------------------
Emerging Markets Portfolio
 
                                       30
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
 
OVERVIEW
- --------------------------------------------------------------------------------
 
THE EUROPEAN EQUITY PORTFOLIO
 
COMPOSITION OF NET ASSETS (AT JUNE 30, 1996)
 
EDGAR REPRESENTATION OF DATA POINTS USED IN PRINTED GRAPHIC
 
<TABLE>
<S>               <C>
Austria                0.5%
Belgium                1.9%
Denmark                1.8%
Finland                2.8%
France                12.4%
Germany               12.9%
Italy                  7.5%
Netherlands            9.6%
Norway                 2.3%
Spain                  7.5%
Sweden                 4.4%
Switzerland           13.6%
United Kingdom        14.3%
Other                  8.5%
</TABLE>
 
PERFORMANCE COMPARED TO THE MORGAN STANLEY
CAPITAL INTERNATIONAL (MSCI) EUROPE INDEX(1)
- -----------------------------------------
 
<TABLE>
<CAPTION>
                                      TOTAL RETURNS(2)
                        --------------------------------------------
                                                    AVERAGE ANNUAL
                            YTD        ONE YEAR     SINCE INCEPTION
                        -----------  ------------  -----------------
<S>                     <C>          <C>           <C>
PORTFOLIO -- CLASS
A.....................      11.85%        12.61%          19.66%
PORTFOLIO -- CLASS
B(3)..................      10.75           N/A             N/A
INDEX.................       6.43         14.69           15.73
 
<FN>
 
1. The MSCI Europe Index is an unmanaged market value weighted index of common
   stocks listed on the stock exchanges of countries in Europe (assumes
   dividends are reinvested).
 
2. Total returns for the Portfolio reflect expenses waived and reimbursed, if
   applicable, by the Adviser. Without such waiver and reimbursement, total
   returns would be lower.
 
3. The Portfolio began offering Class B shares on January 2, 1996.
</TABLE>
 
PAST PERFORMANCE IS NOT PREDICTIVE OF FUTURE PERFORMANCE.
 
- ------------------------------------------------------------
 
THE COUNTRY SPECIFIC PERFORMANCE RESULTS PROVIDED ARE MEASURED BY THE MSCI
EUROPE INDEX AND ARE FOR INFORMATIONAL PURPOSES ONLY AND SHOULD NOT BE CONSTRUED
AS A GUARANTEE OF THE PORTFOLIO'S FUTURE PERFORMANCE. PAST PERFORMANCE SHOWN IS
NOT PREDICTIVE OF FUTURE PERFORMANCE. INVESTMENT RETURN AND PRINCIPAL VALUE WILL
FLUCTUATE SO THAT AN INVESTOR'S SHARES, WHEN REDEEMED, MAY BE WORTH MORE OR LESS
THAN THEIR ORIGINAL COST. PLEASE SEE THE PROSPECTUS FOR A DESCRIPTION OF CERTAIN
RISK CONSIDERATIONS ASSOCIATED WITH INTERNATIONAL INVESTING.
 
The investment objective of the European Equity Portfolio is to seek long-term
capital growth through investment in equity securities of European issuers.
Equity securities for this purpose include stocks and stock equivalents such as
securities convertible into common and preferred stocks and securities having
equity characteristics, such as rights and warrants to purchase common stock.
 
The approach taken in selecting investments for the Portfolio is oriented to
individual stock selection and is value driven. The initial step in identifying
attractive undervalued securities is the screening of European databases. Stocks
are screened for undervaluation on two primary criteria, cash flow and book
value, and three secondary criteria, earnings, sales and yield. Once stocks have
been selected from this screening process, they are put through detailed
fundamental analysis. Important areas covered during this in-depth study include
the companies' balance sheets and cash flow, franchise, products, management and
the strategic value of the assets.
 
For the six month period ended June 30, 1996, the Portfolio had a total return
of 11.85% for the Class A shares and 10.75% for the Class B shares, as compared
to a total return of 6.43% for the Morgan Stanley Capital International (MSCI)
Europe Index. The average annual total return for the twelve months ended June
30, 1996 and for the period from inception on April 2, 1993 through June 30,
1996 was 12.61% and 19.66%, respectively, for the Class A shares, as compared to
14.69% and 15.73%, respectively, for the Index.
 
In the first six months of 1996 we have witnessed a change in the European
investment environment from that seen in 1995. One of the most prominent changes
has been the weakness of most European currencies against the U.S. dollar
following an extended period of strength. The weakest currency in Europe has
been the Swiss franc losing more than 8% against the dollar. Most of the
'deutschemark bloc' currencies have lost between 5% and 6% in the first six
months. There have been exceptions; the Italian lira has gained 3.5% against the
dollar to make the Italian equity market one of the top performers, for U.S.
investors, during the year. This currency weakness has enabled European
companies to be more competitive in international markets and has led to
earnings upgrades in several stocks. Another noticeable trend has been the
strength in smaller cap stocks relative to large cap. Smaller companies have
underperformed the index for quite some time and the better returns this year
reflect a revaluation of these businesses.
 
- --------------------------------------------------------------------------------
                                                       European Equity Portfolio
 
                                       31
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
 
OVERVIEW
- --------------------------------------------------------------------------------
THE EUROPEAN EQUITY PORTFOLIO (CONT.)
 
In general, the European economy continues to be fairly sluggish but an
environment that is positive for equity investors. Inflationary pressures
continue to be subdued and although we have seen interest rate cuts in the first
half of the year, further cuts are possible later in the year. Despite the
economic pick up in Europe, unemployment remains a concern as companies continue
to restructure and rationalize their business.
 
Following a disappointing year for value investors in Europe in 1995, the first
half of 1996 has been far more positive. Cyclical stocks and retailers, two of
last years underperformers, have recovered well. The Portfolio is overweight in
both of these areas. We have benefited from our overweight positions in Spain
and Italy, with utilities performing particularly well. We have substantial
exposure to telecommunication stocks in both markets, as well as to the
electrical utilities in Spain. Other markets in which we are overweight include
the Netherlands and Germany. In both countries, exports stocks have performed
particularly well, helped by the relative weakness of each currency. We have
benefited from the rebound in small stocks in these and other markets. The
Portfolio currently has approximately 30% of its positions with a market cap of
less than one billion dollars.
 
In recent months we have added the following stocks to the Portfolio:
 
Lafarge Coppee is the second largest cement company in the world, and one of the
most geographically diversified. As is the case for the other main European
producers, Lafarge is in the position of having a cash generative yet declining
home market and is in the process of using its free cashflows to diversify away
from this. Diversification is in two areas; namely other forms of building
materials in the mature markets and cement production in growth markets, all of
it by acquisition.
 
Sparbenken is a focused Swedish retail bank with strong savings bank roots.
Although it should experience flat loan growth at best in the years ahead, in
line with the rest of the Swedish banking sector, it has aggressive cost cutting
targets and is well positioned in the growing market for long term personal
savings in Sweden. It has the ability to generate impressive returns on equity
that are not currently reflected in its price/net book value ratio.
 
Holderbank is the largest cement manufacturer in the world. Ninety percent (90%)
of sales are outside Switzerland with the U.S. being the most important market
accounting for 40% of turnover. Other products include concrete, lime,
aggregates and clinker. The group is currently restructuring and has acquired
lower cost plants including Ideals Basic's new plant in Mexico. They have also
taken management control (with an option to buy) of the Box Crow plant in
Dallas. We believe Holderbank will emerge from the current economic slowdown
well positioned to compete in the global market.
 
Railtrack is the monopoly owner of the U.K.'s rail infrastructure, which
comprises track, signaling, bridges and, selected stations which it rents out to
Train Operating Companies (TOCs) who provide the train service. An added
attraction is its high dividend yield.
 
BAT Industries is a leading international tobacco and financial services
conglomerate. Its tobacco business has over 10% of the global market, with
principal brands including Benson and Hedges, Players, Lucky Strike and Kent.
Its financial services operations include Farmers' Group, the fourth largest
U.S. property and casualty insurer; Eagle Star, a major U.K. composite; and
Allied Dunbar, selling unit linked policies. BAT's share price has been impacted
by the periodic investor focus on U.S.-based potential tobacco liabilities,
crystalized by Liggett's proposed deal with the U.S. Attorney General. BAT is
confident that they can continue their historic defensive tactics on this
exposure; BAT's strong position in emerging markets has restored growth to its
tobacco operations which will provide the cash flow to continue to pay a
progressive dividend through the downcycle in insurance. This earnings backdrop
should make BAT look cheap relative to other U.K. insurance companies at the
bottom of their cycles and should reawaken investor interest, combined with
periodic receding fears of U.S. tobacco exposure.
 
Robert Sargent
PORTFOLIO MANAGER
 
July 1996
 
- --------------------------------------------------------------------------------
European Equity Portfolio
 
                                       32
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
STATEMENT OF NET ASSETS (UNAUDITED)
JUNE 30, 1996
- --------------------------------------------------------------------------------
 
THE EUROPEAN EQUITY PORTFOLIO
 
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>
                                                                 VALUE
  SHARES                                                         (000)
      ------------------------------------------------------------
<C>         <S>                                                 <C>
COMMON STOCKS (87.3%)
  AUSTRIA (0.5%)
     9,000  Boehler-Uddeholm AG...............................  $    699
                                                                --------
  BELGIUM (1.9%)
 (a)12,500  Arbed S.A.........................................     1,432
    13,000  Delhaize Freres et Cie, 'Le Lion' S.A.............       650
    12,000  G.I.B. Holdings Ltd...............................       539
     3,055  G.I.B. Holdings Ltd. VVPR (New)...................       136
                                                                --------
                                                                   2,757
                                                                --------
  DENMARK (1.8%)
     6,300  Jyske Bank A/S....................................       397
    45,200  Unidanmark A/S, Class A (Registered)..............     2,100
                                                                --------
                                                                   2,497
                                                                --------
  FINLAND (2.8%)
    90,000  Amer-Yhtymae Oy, Class A..........................     1,517
    50,000  Huhtamaki Oy, Series 1............................     1,674
    20,000  Nokia AB Oy, Series A.............................       739
                                                                --------
                                                                   3,930
                                                                --------
  FRANCE (12.4%)
    44,370  Banque Nationale de Paris.........................     1,560
     3,074  Bongrain S.A......................................     1,490
    14,000  Cie de Saint Gobain...............................     1,877
 (a)10,000  Credit Lyonnaise CDI..............................       234
    33,000  Elf Aquitaine.....................................     2,431
    10,500  Eridania Beghin-Say S.A...........................     1,647
     6,000  Groupe Danone.....................................       910
     1,140  Labinal S.A.......................................       167
    28,000  Lafarge Coppee S.A................................     1,697
 (a)21,405  Legris Industries S.A.............................       983
    12,500  Peugeot S.A.......................................     1,676
    45,452  Thomson CSF.......................................     1,280
    22,100  Total S.A., Class B...............................     1,642
                                                                --------
                                                                  17,594
                                                                --------
  GERMANY (8.7%)
    10,000  BASF AG...........................................     2,852
    60,000  Bayer AG..........................................     2,114
     5,275  Gerresheimer Glas AG..............................     1,126
     4,500  Karstadt AG.......................................     1,794
     2,850  Mannesmann AG.....................................       982
  (a)5,000  Varta AG..........................................     1,072
    25,000  Veba AG...........................................     1,331
     3,000  Volkswagen AG.....................................     1,118
                                                                --------
                                                                  12,389
                                                                --------
  ITALY (7.5%)
(a)518,000  Editoriale L'Expresso S.p.A.......................     1,447
(a)712,996  Impregilo S.p.A...................................       759
(a)2,538,000 Olivetti S.p.A....................................    1,371
   475,000  Sogefi S.p.A......................................       987
   640,000  Stet Di Risp (NCS)................................     1,683
   811,000  Telecom Italia S.p.A..............................     1,746
   700,000  Telecom Italia S.p.A. Di Risp (NCS)...............     1,209
   323,000  Unicem Di Risp (NCS)..............................     1,053
 
<CAPTION>
                                                                 VALUE
  SHARES                                                         (000)
      ------------------------------------------------------------
<C>         <S>                                                 <C>
 (a)45,000  Unicem S.p.A......................................  $    329
                                                                --------
                                                                  10,584
                                                                --------
  NETHERLANDS (9.6%)
    30,319  ABN Amro Holdings N.V.............................     1,629
    14,800  Akzo Nobel N.V....................................     1,776
     2,950  DSM N.V...........................................       293
     8,957  Hollandsche Beton Groep N.V.......................     1,718
    51,710  ING Groep N.V.....................................     1,544
    18,200  Koninklijke Bijenkorf Beheer N.V..................     1,540
    34,468  Koninklijke PTT Nederland N.V.....................     1,306
    40,000  Koninklijke Van Ommeren N.V.......................     1,577
    70,000  Philips Electronics N.V...........................     2,279
                                                                --------
                                                                  13,662
                                                                --------
  NORWAY (2.3%)
   568,000  Den Norske Bank A/S, Class A......................     1,725
   111,600  Saga Petroleum A/S, Class B.......................     1,514
                                                                --------
                                                                   3,239
                                                                --------
  SPAIN (7.5%)
 (a)80,905  Asturiana del Zinc S.A............................       607
    11,518  Bodegas y Bebidas S.A.............................       280
(a)200,000  Grupo Duro Felguera S.A...........................       865
   138,300  Iberdrola S.A.....................................     1,422
    46,000  Repsol S.A. (Bearer)..............................     1,602
   174,000  Sevillana de Electricidad S.A.....................     1,605
   142,500  Telefonica Nacional de Espana S.A.................     2,629
   177,700  Uralita S.A.......................................     1,667
                                                                --------
                                                                  10,677
                                                                --------
  SWEDEN (4.4%)
    11,000  Electrolux AB, Series B...........................       555
   111,000  Nordbanken AS.....................................     2,148
    48,400  Skandia Forsakrings AB............................     1,284
    67,000  S.K.F. AB, Class B................................     1,595
    54,900  Sparbenken Sverige AB, Class A....................       714
                                                                --------
                                                                   6,296
                                                                --------
  SWITZERLAND (13.6%)
     2,150  Ascom Holdings AG (Bearer)........................     2,168
     1,000  Bobst AG (Bearer).................................     1,445
       700  Ciba-Geigy AG (Bearer)............................       850
       950  Ciba-Geigy AG (Registered)........................     1,159
     5,560  Forbo Holding AG (Registered).....................     2,358
     1,030  Hero Lenzburg AG (Bearer).........................       453
     1,800  Holderbank Financiere Glarus AG, Class B
              (Bearer)........................................     1,441
     4,000  Magazine Globus (Participating Certificates)......     2,337
     2,000  Nestle S.A. (Registered)..........................     2,287
 (a)18,300  Oerlikon-Buehrle Holding AG (Registered)..........     1,904
     1,360  Schweizerische Industrie-Gesellschaft Holdings
              (Registered)....................................     1,578
     1,800  Sulzer AG (Participating Certificates)............     1,080
</TABLE>
 
The accompanying notes are an integral part of the financial statements. (Pages
                                    182-188)
 
- --------------------------------------------------------------------------------
                                                       European Equity Portfolio
 
                                       33
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
STATEMENT OF NET ASSETS (UNAUDITED)
JUNE 30, 1996
- --------------------------------------------------------------------------------
 
THE EUROPEAN EQUITY PORTFOLIO (CONT.)
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>
                                                                 VALUE
  SHARES                                                         (000)
      ------------------------------------------------------------
<C>         <S>                                                 <C>
</TABLE>
 
  SWITZERLAND (CONT.)
<TABLE>
<C>         <S>                                                 <C>
       270  Sulzer AG (Registered)............................  $    174
                                                                --------
                                                                  19,234
                                                                --------
  UNITED KINGDOM (14.3%)
   207,000  Associated British Foods plc......................     1,244
    20,000  Bass plc..........................................       251
   300,000  BAT Industries plc................................     2,335
    70,000  BSM Group plc.....................................       201
   104,600  Calor Group plc...................................       395
   450,000  Christian Salvesen plc............................     1,800
   250,000  Courtaulds Textiles plc...........................     1,406
   188,491  John Mowlem & Co. plc.............................       264
   143,700  Kwik Save Group plc...............................     1,011
 (a)98,100  Railtrack Group plc, PP...........................       332
   202,058  Reckitt & Colman plc..............................     2,122
   298,566  Rolls-Royce plc...................................     1,039
   275,483  Royal Insurance Holdings plc......................     1,703
   280,000  Tate & Lyle plc...................................     1,992
   162,800  Unilever plc......................................     3,237
   300,000  WPP Group plc.....................................     1,002
                                                                --------
                                                                  20,334
                                                                --------
TOTAL COMMON STOCKS (Cost $112,066)...........................   123,892
                                                                --------
PREFERRED STOCKS (4.2%)
  GERMANY (4.2%)
     5,540  Dyckerhoff AG.....................................     1,450
    15,430  Hornbach Holding AG...............................     1,330
    45,000  RWE AG............................................     1,384
     3,000  Spar Handels AG...................................       837
     3,200  Volkswagen AG.....................................       878
                                                                --------
TOTAL PREFERRED STOCKS (Cost $4,954)..........................     5,879
                                                                --------
TOTAL FOREIGN SECURITIES (91.5%) (Cost $117,020)..............   129,771
                                                                --------
<CAPTION>
 
   FACE
  AMOUNT
  (000)
- ----------
<C>         <S>                                                 <C>
SHORT-TERM INVESTMENT (4.1%)
  REPURCHASE AGREEMENT (4.1%)
$     5,842 Chase Securities, Inc. 5.15%, dated 6/28/96, due
              7/01/96, to be repurchased at $5,845,
              collateralized by $5,740 U.S. Treasury Notes,
              7.125%, due 9/30/99, valued at $5,868 (Cost
              $5,842).........................................     5,842
                                                                --------
FOREIGN CURRENCY (7.4%)
GBP     2   British Pound.....................................         2
DEM 15,463  Deutsche Mark.....................................    10,173
FRF    718  French Franc......................................       140
ITL    381  Italian Lira......................................        --
NOK     1   Norwegian Krone...................................        --
ESP 18,266  Spanish Peseta....................................       143
                                                                --------
TOTAL FOREIGN CURRENCY (Cost $10,379).........................    10,458
                                                                --------
<CAPTION>
 
                                                                 VALUE
                                                                 (000)
      ------------------------------------------------------------
<C>         <S>                                                 <C>
TOTAL INVESTMENTS (103.0%) (Cost $133,241)....................  $146,071
                                                                --------
</TABLE>
 
<TABLE>
<S>                                                 <C>      <C>
OTHER ASSETS (0.4%)
  Cash............................................  $    1
  Dividends Receivable............................     293
  Foreign Withholding Tax Reclaim Receivable......     174
  Receivable for Investments Sold.................      92
  Receivable for Portfolio Shares Sold............      38
  Net Unrealized Gain on Forward Foreign Currency
   Exchange Contracts.............................      24
  Interest Receivable.............................       2
  Other...........................................       7        631
                                                    -------
LIABILITIES (-3.4%)
  Payable for Investments Purchased...............  (4,584 )
  Investment Advisory Fees Payable................    (182 )
  Custodian Fees Payable..........................     (25 )
  Administrative Fees Payable.....................     (19 )
  Payable for Portfolio Shares Redeemed...........      (2 )
  Distribution Fees Payable.......................      (1 )
  Other Liabilities...............................     (44 )   (4,857)
                                                    -------  --------
NET ASSETS (100%)..........................................  $141,845
                                                             --------
                                                             --------
NET ASSETS CONSIST OF:
Paid in Capital............................................  $127,228
Undistributed Net Investment Income........................     1,683
Accumulated Net Realized Gain..............................        79
Unrealized Appreciation on Investments and Foreign Currency
  Translations.............................................    12,855
                                                             --------
NET ASSETS.................................................  $141,845
                                                             --------
                                                             --------
CLASS A:
NET ASSETS.................................................  $139,785
NET ASSET VALUE, OFFERING AND REDEMPTION PRICE PER
  SHARE
  Applicable to 8,976,407 outstanding $0.001 par value
  shares (authorized 500,000,000 shares)...................    $15.57
                                                             --------
                                                             --------
CLASS B:
                                                               $2,060
NET ASSETS.................................................
NET ASSET VALUE, OFFERING AND REDEMPTION PRICE PER
  SHARE
  Applicable to 132,410 outstanding $0.001 par value shares
  (authorized 500,000,000 shares)..........................    $15.56
                                                             --------
                                                             --------
</TABLE>
 
The accompanying notes are an integral part of the financial statements. (Pages
                                    182-188)
 
- --------------------------------------------------------------------------------
European Equity Portfolio
 
                                       34
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
STATEMENT OF NET ASSETS (UNAUDITED)
JUNE 30, 1996
- --------------------------------------------------------------------------------
 
THE EUROPEAN EQUITY PORTFOLIO (CONT.)
- --------------------------------------------------------------------------------
<TABLE>
<S>                                                 <C>      <C>
FORWARD FOREIGN CURRENCY EXCHANGE CONTRACT INFORMATION:
  Under the terms of forward foreign currency exchange contracts open
  at June 30, 1996, the Portfolio is obligated to deliver or is to
  receive foreign currency in exchange for U.S. dollars as indicated
  below:
</TABLE>
 
<TABLE>
<CAPTION>
                                                                     NET
 CURRENCY                             IN EXCHANGE                UNREALIZED
TO DELIVER     VALUE     SETTLEMENT       FOR         VALUE      GAIN (LOSS)
  (000)        (000)        DATE         (000)        (000)         (000)
- ----------     -----     -----------  -----------     -----     -------------
<S>         <C>          <C>          <C>          <C>          <C>
U.S.$  23    $      23      7/02/96    ITL 34,617   $      23     $      --
DEM 400            264      8/09/96   U.S.$   288         288            24
                 -----                                  -----           ---
             $     287                              $     311     $      24
                 -----                                  -----           ---
                 -----                                  -----           ---
</TABLE>
 
- ------------------------------------------------------------
 
<TABLE>
<S>        <C>        <C>
(a)           --      Non-income producing security
NCS           --      Non Convertible Shares
CDI           --      Certificate of Investment
PP            --      Partially paid
</TABLE>
 
- ------------------------------------------------------------
 
            SUMMARY OF FOREIGN SECURITIES BY INDUSTRY CLASSIFICATION
 
<TABLE>
<CAPTION>
                                       VALUE     PERCENTAGE OF
INDUSTRY                               (000)       NET ASSETS
<S>                                  <C>        <C>
- ----------------------------------------------------------------
Capital Equipment..................  $  21,443          15.1%
Consumer Goods.....................     25,291          17.8
Energy.............................     11,904           8.4
Finance............................     15,798          11.1
Gold Mines.........................        606           0.5
Materials..........................     29,713          21.0
Multi-Industry.....................      4,285           3.0
Services...........................     20,731          14.6
                                     ---------           ---
                                     $ 129,771          91.5%
                                     ---------           ---
                                     ---------           ---
</TABLE>
 
The accompanying notes are an integral part of the financial statements. (Pages
                                    182-188)
 
- --------------------------------------------------------------------------------
                                                       European Equity Portfolio
 
                                       35
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
 
OVERVIEW
- --------------------------------------------------------------------------------
 
THE GLOBAL EQUITY PORTFOLIO
 
COMPOSITION OF NET ASSETS (AT JUNE 30, 1996)
 
EDGAR REPRESENTATION OF DATA POINTS USED IN PRINTED GRAPHIC
 
<TABLE>
<S>               <C>
Australia              1.7%
Canada                 0.4%
France                 4.3%
Germany                7.5%
Hong Kong              0.9%
Ireland                3.6%
Italy                  3.1%
Japan                 11.3%
Netherlands            5.6%
Spain                  4.0%
Sweden                 0.7%
Switzerland            6.6%
United Kingdom         6.8%
United States         39.3%
Other                  4.2%
</TABLE>
 
PERFORMANCE COMPARED TO THE MORGAN STANLEY
CAPITAL INTERNATIONAL (MSCI) WORLD INDEX(1)
- -----------------------------------------
 
<TABLE>
<CAPTION>
                                      TOTAL RETURNS(2)
                        --------------------------------------------
                                                    AVERAGE ANNUAL
                            YTD        ONE YEAR     SINCE INCEPTION
                        -----------  ------------  -----------------
<S>                     <C>          <C>           <C>
PORTFOLIO -- CLASS
A.....................      13.42%        20.05%          19.48%
PORTFOLIO -- CLASS
B(3)..................      12.88           N/A             N/A
INDEX.................       7.08         18.44           13.35
 
<FN>
 
1. The MSCI World Index is an unmanaged index of common stocks and includes
   securities listed on the stock exchanges of the U.S., Europe, Canada,
   Australia, New Zealand and the Far East (assumes dividends reinvested).
 
2. Total returns for the Portfolio reflect expenses waived and reimbursed, if
   applicable, by the Adviser. Without such waiver and reimbursement, total
   returns would be lower.
 
3. The Portfolio began offering Class B shares on January 2, 1996.
</TABLE>
 
PAST PERFORMANCE IS NOT PREDICTIVE OF FUTURE PERFORMANCE.
 
- ------------------------------------------------------------
 
THE COUNTRY SPECIFIC PERFORMANCE RESULTS PROVIDED IN THIS OVERVIEW ARE FOR
INFORMATIONAL PURPOSES ONLY AND SHOULD NOT BE CONSTRUED AS A GUARANTEE OF THE
PORTFOLIO'S FUTURE PERFORMANCE. PAST PERFORMANCE SHOWN IS NOT PREDICTIVE OF
FUTURE PERFORMANCE. INVESTMENT RETURN AND PRINCIPAL VALUE WILL FLUCTUATE SO THAT
AN INVESTOR'S SHARES, WHEN REDEEMED, MAY BE WORTH MORE OR LESS THAN THEIR
ORIGINAL COST. PLEASE SEE THE PROSPECTUS FOR A DESCRIPTION OF CERTAIN RISK
CONSIDERATIONS ASSOCIATED WITH INTERNATIONAL INVESTING.
 
The Global Equity Portfolio is managed with the objective of obtaining a high
total return by investing in markets worldwide, including the United States.
Investments may also be made with discretion in smaller companies or emerging
markets.
 
For the six month period ended June 30, 1996, the Portfolio had a total return
of 13.42% for the Class A shares and 12.88% for the Class B shares, as compared
to a total return of 7.08% for the Morgan Stanley Capital International (MSCI)
World Index. The average annual total return for the twelve months ended June
30, 1996 and for the period from inception on July 15, 1992 through June 30,
1996 was 20.05% and 19.48%, respectively for the Class A shares, as compared to
18.44% and 13.35%, respectively for the Index.
 
The outperformance relative to the benchmark over the first half of 1996 was due
primarily to the positive share price performance of individual stock holdings
in the U.S., Japan, Germany and Switzerland. In addition, our overweight
position in the Swiss market coupled with our underweighting of the Japanese
market also proved beneficial.
 
Individual stocks making a positive contribution in the U.S. included Addington
Resources (which was subject to a takeover bid), Comsat, Egghead, (which sold a
loss making division) and GenRad. In Japan, TDK and Toyo Seikan Kaisha performed
well. In Germany, BASF was a strong performer as were Telefonica in Spain,
Avonmore Foods and Green Property in Ireland. In Switzerland strong performers
included Ciba-Geigy (which announced a merger with Sandoz in March) and SIG.
 
The U.S. market's strong performance (MSCI USA Index up 10.6%) was principally
due to record mutual fund inflows of $140 billion over the first six months, in
itself higher than the aggregate total for 1995. Continuing merger activity and
a subdued inflation outlook also provided support for equities. This advance, in
the face of a 120 basis point rise in long bond rates following stronger than
anticipated employment growth, suggests however that by many benchmarks, the
U.S. aggregate market now appears fully priced.
 
In Japan, clear signals of a sustainable economic recovery helped the MSCI Japan
Index to rise 7.5%, although dollar strength reduced this to 1.1% in U.S. dollar
terms. Continued loose monetary policy, gradual progress in resolving the
banking crisis, strong first quarter real GDP growth (12.7% on an annualized
basis) and foreign investor interest all provided market impetus. Nonetheless,
with cash flow valuations
 
- --------------------------------------------------------------------------------
Global Equity Portfolio
 
                                       36
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
 
OVERVIEW
- --------------------------------------------------------------------------------
THE GLOBAL EQUITY PORTFOLIO (CONT.)
remaining high by historical standards and the budget deficit now representing
7% of GNP, the Bank of Japan will inevitably be forced to raise interest rates
later this year.
 
European markets generally performed strongly, particularly in local currency
terms, with Ireland (16.5%), Sweden (14.7%), Spain (13.9%), Italy (12.8%) and
the Netherlands (11.5%) all producing strong gains in U.S. dollar terms. Despite
weak domestic economies, support came from historically low short term interest
rates, improving fiscal governance in the run up to European Monetary Union and
a very subdued inflation outlook.
 
The outlook for stronger U.S. economic growth in the second half and by
implication, the prospect of higher interest rates, combined with a subdued
earnings outlook suggests the need to focus on stockpicking is paramount. After
a decade of cost cutting, much of corporate America has already been "right
sized", and this is being demonstrated by increasing pressure on margins.
Subdued inflation data, which since January has led the Federal Reserve Board to
leave interest rates unchanged, may now be superseded by this year's
consistently above-trend non-farm payroll growth. In Japan, we expect to
maintain our underweight position as value stocks remain difficult to find with
many blue-chip companies already trading at historically high multiples. This
underweight position remains a risk however and could prove detrimental in the
short term, should the Japanese market experience a momentum-driven period of
outperformance. In Europe, we remain overweight on grounds of relative value and
in anticipation of an upswing in economic activity driven by a benign interest
rate and inflation environment.
 
The long term return from global equities is typically 6% per annum above
consumer price inflation. Given the scale of returns in 1995, and with global
inflation of between 2-3% likely for 1996, an increase of between 8-10% in the
MSCI World Index remains a reasonable estimate.
 
Francis Campion
PORTFOLIO MANAGER
 
July 1996
 
- --------------------------------------------------------------------------------
                                                         Global Equity Portfolio
 
                                       37
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
STATEMENT OF NET ASSETS (UNAUDITED)
JUNE 30, 1996
- --------------------------------------------------------------------------------
 
THE GLOBAL EQUITY PORTFOLIO
 
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>
                                                                  VALUE
  SHARES                                                          (000)
- ------------------------------------------------------------
<C>          <S>                                                 <C>
COMMON STOCKS (94.7%)
  AUSTRALIA (1.7%)
     50,000  Brambles Industries Ltd...........................  $    695
    189,160  Coles Myer Ltd....................................       687
                                                                 --------
                                                                    1,382
                                                                 --------
  CANADA (0.4%)
     22,900  Hudson's Bay Co...................................       347
                                                                 --------
  FRANCE (4.3%)
     22,200  Banque Nationale de Paris.........................       781
      2,310  Bongrain S.A......................................     1,119
  (a)12,000  Credit Lyonnaise CDI..............................       281
      9,266  Elf Aquitaine.....................................       683
     11,965  Valeo S.A.........................................       641
                                                                 --------
                                                                    3,505
                                                                 --------
  GERMANY (6.5%)
      3,000  BASF AG...........................................       856
     38,220  Bayer AG..........................................     1,346
      2,500  Karstadt AG.......................................       997
      3,000  Mannesmann AG.....................................     1,034
      2,764  Sinn AG...........................................       455
   (a)2,225  Varta AG..........................................       477
        260  Volkswagen AG.....................................        97
                                                                 --------
                                                                    5,262
                                                                 --------
  HONG KONG (0.9%)
    220,000  Jardine Strategic Holdings, Inc...................       704
                                                                 --------
  IRELAND (3.5%)
    757,742  Anglo Irish Bank Corp. plc........................       744
    470,000  Avonmore Foods plc, Class A.......................     1,276
    229,312  Green Property plc................................       843
                                                                 --------
                                                                    2,863
                                                                 --------
  ITALY (3.1%)
    500,000  Stet Di Risp (NCS)................................     1,315
    700,000  Telecom Italia S.p.A. Di Risp (NCS)...............     1,209
                                                                 --------
                                                                    2,524
                                                                 --------
  JAPAN (11.3%)
        160  East Japan Railway Co.............................       842
     65,000  Fuji Photo Film Ltd...............................     2,057
     24,000  Hitachi Ltd.......................................       224
    110,000  Kao Corp..........................................     1,489
    162,750  Nichido Fire & Marine Insurance Co................     1,261
     11,000  Sony Corp.........................................       725
    100,000  Sumitomo Rubber Industries........................       868
      5,000  TDK Corp..........................................       299
     40,000  Toyo Seikan Kaisha Ltd............................     1,398
                                                                 --------
                                                                    9,163
                                                                 --------
  NETHERLANDS (5.6%)
     23,608  ABN Amro Holdings N.V.............................     1,269
      2,188  Hollandsche Beton Groep N.V.......................       420
     40,398  ING Groep N.V.....................................     1,206
     24,000  Koninklijke Van Ommeren N.V.......................       946
 
<CAPTION>
                                                                  VALUE
  SHARES                                                          (000)
- ------------------------------------------------------------
<C>          <S>                                                 <C>
     20,000  Philips Electronics N.V...........................  $    651
                                                                 --------
                                                                    4,492
                                                                 --------
  SPAIN (4.0%)
     59,500  Iberdrola S.A.....................................       612
     16,000  Repsol S.A........................................       557
    112,300  Telefonica Nacional de Espana S.A.................     2,072
                                                                 --------
                                                                    3,241
                                                                 --------
  SWEDEN (0.7%)
     16,600  Skandia Forsakrings AB............................       441
      7,700  Sparbenken Sverige AB, Class A....................       100
     (a)770  Tornet Fastighets AB..............................         6
                                                                 --------
                                                                      547
                                                                 --------
  SWITZERLAND (6.6%)
        500  Ascom Holdings AG (Bearer)........................       504
        430  Bobst AG (Bearer).................................       621
      1,400  Ciba-Geigy AG (Registered)........................     1,709
      1,400  Forbo Holding AG (Registered).....................       594
      1,400  Magazine Globus (Participating Certificates)......       818
        900  Schweizerische Industrie-Gesellschaft Holdings
               (Registered)....................................     1,044
                                                                 --------
                                                                    5,290
                                                                 --------
  UNITED KINGDOM (6.8%)
     28,500  Calor Group plc...................................       107
    298,700  Christian Salvesen plc............................     1,195
    102,325  John Mowlem & Co. plc.............................       143
    150,000  Kwik Save Group plc...............................     1,056
    280,000  Matthews (Bernard) plc............................       439
(a,d)653,333 Pentos plc........................................        --
  (a)61,700  Railtrack Group plc, PP...........................       209
     68,060  Reckitt & Colman plc..............................       715
     73,902  Rolls-Royce plc...................................       257
     46,400  Unilever plc......................................       923
    132,000  WPP Group plc.....................................       441
                                                                 --------
                                                                    5,485
                                                                 --------
  UNITED STATES (39.3%)
  (a)33,850  Addington Resources, Inc..........................       846
     20,550  Aluminum Company of America.......................     1,179
     12,500  American Telephone & Telegraph Corp...............       775
  (a)15,400  AMR Corp..........................................     1,401
     32,100  Bank of New York Co., Inc.........................     1,645
  (a)30,500  Beazer Homes USA, Inc.............................       488
     27,600  Browning-Ferris Industries, Inc...................       800
 (a)128,000  Cadiz Land Co., Inc...............................       752
(a,f)22,000  Cadiz Land Co., Inc. (acquired 1/04/94, Cost
               $88)............................................       129
     87,500  Comsat Corp.......................................     2,275
   (a)8,802  Cray Research, Inc................................       212
  (a)80,000  Data General Corp.................................     1,040
 (a)126,500  Egghead, Inc......................................     1,407
</TABLE>
 
The accompanying notes are an integral part of the financial statements. (Pages
                                    182-188)
 
- --------------------------------------------------------------------------------
Global Equity Portfolio
 
                                       38
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
STATEMENT OF NET ASSETS (UNAUDITED)
JUNE 30, 1996
- --------------------------------------------------------------------------------
 
THE GLOBAL EQUITY PORTFOLIO (CONT.)
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>
                                                                  VALUE
  SHARES                                                          (000)
- ------------------------------------------------------------
<C>          <S>                                                 <C>
</TABLE>
 
  UNITED STATES (CONT.)
<TABLE>
<C>          <S>                                                 <C>
     50,000  Enhance Financial Services Group, Inc.............  $  1,400
     38,000  Finova Group, Inc.................................     1,853
 (a)129,200  GenRad, Inc.......................................     2,132
      2,000  General Motors Corp...............................       105
     16,000  Georgia Pacific Corp..............................     1,136
     22,100  Houghton Mifflin Co...............................     1,100
     24,300  Lukens, Inc.......................................       580
     13,000  MBIA, Inc.........................................     1,012
     61,400  MCI Communications Corp...........................     1,573
     14,300  Mellon Bank Corp..................................       815
  (a)21,300  Nexthealth, Inc...................................        51
     22,600  Penncorp Financial Group, Inc.....................       718
     18,600  Philip Morris Cos., Inc...........................     1,934
     12,000  Prime Retail, Inc.................................       136
     11,750  Reebok International Ltd..........................       395
     13,100  Tecumseh Products Co., Class A....................       704
     17,000  United Asset Management, Inc......................       417
     27,000  UST Corp..........................................       402
  (a)55,000  Waban, Inc........................................     1,313
 (a)157,000  WorldCorp., Inc...................................     1,060
                                                                 --------
                                                                   31,785
                                                                 --------
TOTAL COMMON STOCKS (Cost $62,887).............................    76,590
                                                                 --------
PREFERRED STOCKS (1.0%)
  GERMANY (1.0%)
      3,000  Volkswagen AG (Cost $647).........................       823
                                                                 --------
CONVERTIBLE PREFERRED SECURITY (0.0%)
  HONG KONG (0.0%)
     21,000  Jardine Strategic Holdings, Inc., IDR 7.50%,
               5/07/97 (Cost $21)..............................        23
                                                                 --------
<CAPTION>
  NO. OF
  RIGHTS
- -----------
<C>          <S>                                                 <C>
RIGHTS (0.1%)
  IRELAND (0.1%)
(a,d)76,437  Green Property plc, expiring 7/02/96 (Cost $0)....        37
                                                                 --------
TOTAL FOREIGN & U.S. SECURITIES (95.8%) (Cost $63,555).........    77,473
                                                                 --------
</TABLE>
<TABLE>
<CAPTION>
   FACE
  AMOUNT
   (000)
- -----------
<C>          <S>                                                 <C>
SHORT-TERM INVESTMENT (3.9%)
  REPURCHASE AGREEMENT (3.9%)
     $3,166  Chase Securities, Inc. 5.15%, dated 6/28/96, due
               7/01/96 to be repurchased at $3,167,
               collateralized by $3,115 U.S. Treasury Notes,
               7.125%, 9/30/99, valued at $3,185 (Cost
               $3,166).........................................     3,166
                                                                 --------
 
<CAPTION>
  AMOUNT                                                          VALUE
   (000)                                                          (000)
- ------------------------------------------------------------
<C>          <S>                                                 <C>
FOREIGN CURRENCY (0.0%)
  ITL   264  Italian Lira......................................  $     --
  ESP   520  Spanish Peseta....................................         4
                                                                 --------
TOTAL FOREIGN CURRENCY (Cost $4)...............................         4
                                                                 --------
TOTAL INVESTMENTS (99.7%) (Cost $66,725).......................    80,643
                                                                 --------
</TABLE>
<TABLE>
<S>                                                        <C>    <C>
OTHER ASSETS (1.0%)
  Receivable for Investments Sold........................  $ 344
  Net Unrealized Gain on Forward Foreign Currency
    Exchange Contracts...................................    219
  Dividends Receivable...................................    180
  Foreign Withholding Tax Reclaim Receivable.............     73
  Interest Receivable....................................      1
  Other..................................................     11      828
                                                           -----
LIABILITIES (-0.7%)
  Payable for Investments Purchased......................   (430)
  Investment Advisory Fees Payable.......................   (121)
  Administrative Fees Payable............................    (11)
  Custodian Fees Payable.................................    (11)
  Directors' Fees and Expenses Payable...................     (1)
  Distribution Fees Payable..............................     (1)
  Other Liabilities......................................    (28)    (603)
                                                           -----  -------
NET ASSETS (100%)...............................................  $80,868
                                                                  -------
                                                                  -------
NET ASSETS CONSIST OF:
Paid in Capital.................................................  $62,094
Undistributed Net Investment Income.............................      611
Accumulated Net Realized Gain...................................    4,025
Unrealized Appreciation on Investments and Foreign Currency
 Translations...................................................   14,138
                                                                  -------
NET ASSETS......................................................  $80,868
                                                                  -------
                                                                  -------
 
<CAPTION>
CLASS A:
- ---------------------------------------------------------
<S>                                                        <C>    <C>
NET ASSETS......................................................  $78,960
NET ASSET VALUE, OFFERING AND REDEMPTION
  PRICE PER SHARE
  Applicable to 4,864,183 outstanding $0.001 par value shares
  (authorized 500,000,000 shares)...............................   $16.23
                                                                  -------
                                                                  -------
<CAPTION>
CLASS B:
- ---------------------------------------------------------
<S>                                                        <C>    <C>
NET ASSETS......................................................   $1,908
NET ASSET VALUE, OFFERING AND REDEMPTION
  PRICE PER SHARE
  Applicable to 117,728 outstanding $0.001 par value shares
  (authorized 500,000,000 shares)...............................   $16.21
                                                                  -------
                                                                  -------
</TABLE>
 
The accompanying notes are an integral part of the financial statements. (Pages
                                    182-188)
 
- --------------------------------------------------------------------------------
                                                         Global Equity Portfolio
 
                                       39
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
STATEMENT OF NET ASSETS (UNAUDITED)
JUNE 30, 1996
- --------------------------------------------------------------------------------
 
THE GLOBAL EQUITY PORTFOLIO (CONT.)
- --------------------------------------------------------------------------------
 
<TABLE>
<S>                                                        <C>    <C>
FORWARD FOREIGN CURRENCY EXCHANGE CONTRACT INFORMATION:
  Under the terms of forward foreign currency exchange contracts open at
  June 30, 1996, the Portfolio is obligated to deliver or is to receive
  foreign currency in exchange for U.S. dollars as indicated below:
</TABLE>
 
<TABLE>
<CAPTION>
                                         IN                       NET
CURRENCY TO                           EXCHANGE                UNREALIZED
  DELIVER      VALUE    SETTLEMENT      FOR        VALUE      GAIN (LOSS)
   (000)       (000)       DATE        (000)       (000)         (000)
- -----------  ---------  -----------  ----------  ---------  ---------------
<C>          <C>        <C>          <S>         <C>        <C>
 U.S.$  244  $     244     7/02/96   IEP  153    $     244     $      --
 NLG 6,900       4,065     8/23/96   U.S.$4,284      4,284           219
             ---------                           ---------         -----
             $   4,309                           $   4,528     $     219
             ---------                           ---------         -----
             ---------                           ---------         -----
</TABLE>
 
- ------------------------------------------------------------
 
<TABLE>
<S>        <C>        <C>
(a)           --      Non-income producing security
(d)           --      Security is valued at fair value -- See note A-1 to
                      financial statements
(f)           --      Restricted as to public resale. Total value of
                      restricted securities at June 30, 1996 was $129 or
                      0.2% of net assets. (Total cost $88)
CDI           --      Certificate of Investment
IDR           --      International Depositary Receipt
NCS           --      Non Convertible Shares
PP            --      Partially Paid
IEP           --      Irish Punt
NLG           --      Netherland Guilder
</TABLE>
 
- ------------------------------------------------------------
 
        SUMMARY OF FOREIGN & U.S. SECURITIES BY INDUSTRY CLASSIFICATION
 
<TABLE>
<CAPTION>
                                                        PERCENT
                                             VALUE       OF NET
INDUSTRY                                     (000)       ASSETS
<S>                                        <C>        <C>
- ------------------------------------------------------------------
Capital Equipment........................  $  15,009        18.5%
Consumer Goods...........................     13,959        17.3
Energy...................................      3,840         4.7
Finance..................................     14,849        18.4
Materials................................      7,904         9.8
Multi-Industry...........................      4,217         5.2
Services.................................     17,695        21.9
                                           ---------         ---
                                           $  77,473        95.8%
                                           ---------         ---
                                           ---------         ---
</TABLE>
 
The accompanying notes are an integral part of the financial statements. (Pages
                                    182-188)
 
- --------------------------------------------------------------------------------
Global Equity Portfolio
 
                                       40
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
 
OVERVIEW
- --------------------------------------------------------------------------------
 
THE GOLD PORTFOLIO
 
COMPOSITION OF NET ASSETS (AT JUNE 30, 1996)
 
EDGAR REPRESENTATION OF DATA POINTS USED IN PRINTED GRAPHIC
 
<TABLE>
<S>            <C>
Africa              3.1%
Australia          24.8%
Canada             17.0%
South Africa       30.3%
United States      15.9%
Other               8.9%
</TABLE>
 
PERFORMANCE COMPARED TO THE PHILADELPHIA
GOLD AND SILVER INDEX(1)
- --------------------------------------
 
<TABLE>
<CAPTION>
                                     TOTAL RETURNS(2)
                        ------------------------------------------
                                                   AVERAGE ANNUAL
                            YTD        ONE YEAR    SINCE INCEPTION
                        -----------  ------------  ---------------
<S>                     <C>          <C>           <C>
PORTFOLIO -- CLASS
 A....................      28.07%        34.92%         12.44%
PORTFOLIO -- CLASS
 B(3).................      24.18           N/A            N/A
INDEX.................       3.16          3.81          -3.77
 
<FN>
 
1. The Philadelphia Gold and Silver Index is an unmanaged index comprised of the
   leading companies involved in the mining of gold and silver.
 
2. Total returns for the Portfolio reflect expenses waived and reimbursed, if
   applicable, by the Adviser. Without such waiver and reimbursement, total
   returns would be lower.
 
3. The Portfolio began offering Class B shares on January 2, 1996.
</TABLE>
 
PAST PERFORMANCE IS NOT PREDICTIVE OF FUTURE PERFORMANCE.
 
- ------------------------------------------------------------
 
THE PERFORMANCE RESULTS PROVIDED ARE FOR INFORMATIONAL PURPOSES ONLY AND SHOULD
NOT BE CONSTRUED AS A GUARANTEE OF THE PORTFOLIO'S FUTURE PERFORMANCE. PAST
PERFORMANCE SHOWN IS NOT PREDICTIVE OF FUTURE PERFORMANCE. INVESTMENT RETURN AND
PRINCIPAL VALUE WILL FLUCTUATE SO THAT AN INVESTOR'S SHARES, WHEN REDEEMED, MAY
BE WORTH MORE OR LESS THAN THEIR ORIGINAL COST. PLEASE SEE THE PROSPECTUS FOR A
DESCRIPTION OF CERTAIN RISK CONSIDERATIONS ASSOCIATED WITH INTERNATIONAL
INVESTING.
 
The Gold Portfolio seeks to provide long-term capital appreciation by investing
primarily in the equity securities of foreign and domestic issuers engaged in
gold-related activities.
 
For the six month period ended June 30, 1996, the Portfolio had a total return
of 28.07% for the Class A shares and 24.18% for the Class B shares as compared
to 3.16% for the Philadelphia Gold and Silver Index. The average annual total
return for the Portfolio for the twelve months ended June 30, 1996 and for the
period from inception on February 1, 1994 through June 30, 1996 was 34.92% and
12.44%, respectively, for the Class A shares compared to 3.81% and -3.77%,
respectively, for the Philadelphia Gold and Silver (XAU) Index.
 
During the first quarter, the Portfolio benefited from strong performance in the
overall gold share market and large gains from Bre-X Minerals (BXM-TSE) and
Greenstone Resources (GRE-TSE). At quarter end, gold shares continued to hold
gains made in response to gold's January rise above $400, despite gold's
correction late in the quarter. In making portfolio allocations, we continue to
find value among selected Australian gold shares, in contrast to large
capitalization North American gold shares which remain overvalued.
 
For the first time since the Portfolio's inception, a substantial allocation was
directed towards South African gold shares which now constitute 30.3% of the
Portfolio. As a result of weakness in the South African rand, the relative
attractiveness of South African gold shares significantly increased. Rand
weakness translates into a higher rand gold price and higher operating margins
viewed in local currency. Although the weak rand hurts share values in the
translation back to US dollars, the relationship is not 1 to 1. So far during
1996, the 20% rand devaluation has increased earnings by approximately 80% even
after considering the currency conversion. These impacts on valuation have not
yet been fully discounted in share pricing, affording the Portfolio an
attractive investment opportunity.
 
MARKET REVIEW
 
As we indicated in the 1995 Annual Report, elevated gold lease rates signaled
that high levels of producer selling were unsustainable. We also projected that
once producer selling abated -- effectively removing a temporary source of
supply from the market -- that gold prices would move sharply higher. January's
gold rise of $19.2, or 5.0%, represented the gold market's attempt to reach a
higher equilibrium on the heels of unsustainable levels of producer hedging.
 
- --------------------------------------------------------------------------------
                                                                  Gold Portfolio
 
                                       41
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
 
OVERVIEW
- --------------------------------------------------------------------------------
THE GOLD PORTFOLIO (CONT.)
 
What we did not anticipate was that reduced temporary sources of gold supply
from North American producers (which support gold's fundamentals) would be more
than offset by official selling and rumored producer hedging among South African
mining firms. Belgium's sale of 203 tonnes helped mute the ascent of January's
rally. Once the rand currency began to stablize during the second quarter,
rumors of continued hedging by South African mining firms appeared viable, as
each gold rally was met by aggressive selling. Higher lease rates, which confirm
the demand for borrowed gold which facilitate forward sales programs, also
provided credence to the South African hedging rumors.
 
From a long-term investment perspective, great similarities exist between
today's gold market and the state of the market at major lows in early 1993 and
1995. So far in 1996, producer and official selling have once again provided
temporary sources of supply which effectively clear gold's supply/demand
deficit. Also, as in January 1995, large speculators are once again short gold
futures, according to the Commitment of Traders Report supplied by the Commodity
Futures Trading Commission. In addition, measures of investor sentiment are
consistent with levels observed at intermediate lows in the price of gold
bullion.
 
Although these technical indicators do not guarantee a rise in the gold price,
history demonstrates that gold rallies often begin when fundamental changes
affecting the price of gold catch investors off-guard and out of position. In
1993, it was the combination of positive supply/demand factors and low real
interest rates which generated a substantial gold rally. In early 1995, it was a
plunging dollar/yen to postwar levels which caught speculators off-guard and
fueled a signficant gold rally. In the current market envrionment, fundamental
changes could involve any aspect of gold: (1) gold as a portfolio diversifer
against financial market risk, (2) gold as a hedge against currency volatility,
(3) gold as a hedge against monetary instability: inflation/deflation, (4) gold
as a commodity in supply/demand deficit. Predicting which fundamental will move
the gold price is not important: proper investment positioning at attractive
levels is the proper area of focus for long-term investors.
 
Gold's hedge against the effects of unexpected inflation was recently
highlighted by Barton Biggs, Morgan Stanley's Chief Global Strategist. On May 6,
Biggs changed Morgan Stanley's model portfolio to include a 3% gold weighting.
Reasons included the potential of inflation concerns to unseat the U.S. stock
market which is "dramatically overpriced." With so much capital invested in the
financial markets relative to the precious metals arena, it may take only small
relative shifts among portfolio allocations for gold to react favorably.
 
We will continue to monitor changing influences on gold's fundamentals and look
forward to presenting the Portfolio's results over the next six months.
 
Peter F. Palmedo
PORTFOLIO MANAGER
 
July 1996
 
- --------------------------------------------------------------------------------
Gold Portfolio
 
                                       42
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
STATEMENT OF NET ASSETS (UNAUDITED)
JUNE 30, 1996
- --------------------------------------------------------------------------------
 
THE GOLD PORTFOLIO
 
- --------------------------------------------------------------------------------
 
<TABLE>
<CAPTION>
                                                                  VALUE
  SHARES                                                          (000)
<C>          <S>                                                 <C>
- ------------------------------------------------------------
COMMON STOCKS (91.1%)
  AFRICA (3.1%)
     58,600  Ashanti Goldfields Co., GDR.......................  $  1,157
                                                                 --------
  AUSTRALIA (24.8%)
 (a)354,000  Delta Gold N.L....................................       904
 (a)415,000  Great Central Mines N.L...........................     1,135
 (a)373,000  Lihir Gold Ltd....................................       598
    811,899  Newcrest Mining Ltd...............................     3,254
    373,900  Plutonic Resources Ltd............................     1,910
    358,600  Poseidon Gold Ltd.................................       882
 (a)500,000  Wiluna Mines Ltd..................................       432
                                                                 --------
                                                                    9,115
                                                                 --------
  CANADA (17.0%)
  (a)80,000  Bema Gold Corp....................................       310
 (a)118,000  Bre-X Minerals Ltd................................     1,972
 (a)206,000  Dakota Mining Corp................................       425
     25,000  Glamis Gold Ltd...................................       178
     48,000  Placer Dome, Inc..................................     1,146
 (a)478,900  Royal Oak Mines, Inc..............................     1,766
  (a)58,000  TVX Gold, Inc.....................................       425
                                                                 --------
                                                                    6,222
                                                                 --------
  SOUTH AFRICA (30.3%)
     47,000  Driefontein Consolidated Ltd., ADR................       617
    163,600  Free State Consolidated Gold Mines Ltd., ADR......     1,513
     24,000  Gold Fields of South Africa Ltd., ADR.............       726
    120,000  Harmony Gold Mining Co., Ltd., ADR................     1,147
    162,900  JCI Co., Ltd......................................     1,598
      1,500  JCI Co., Ltd., ADR................................        15
    100,000  Kloof Gold Mining Co., Ltd........................       946
    116,200  Kloof Gold Mining Co., Ltd., ADR..................     1,126
    182,000  Vaal Reefs Exploration & Mining Co., Ltd., ADR....     1,456
  (a)82,100  Western Area Gold Mining ADR......................     1,280
     19,000  Western Deep Levels Ltd., ADR.....................       689
                                                                 --------
                                                                   11,113
                                                                 --------
  UNITED STATES (15.9%)
 (a)107,000  Gold Reserve Corp.................................       816
    103,000  Homestake Mining Co...............................     1,764
 (a)131,300  Pegasus Gold, Inc.................................     1,608
     60,300  Santa Fe Pacific Gold Corp........................       852
  (a)33,800  Stillwater Mining Co..............................       799
                                                                 --------
                                                                    5,839
                                                                 --------
TOTAL COMMON STOCKS (Cost $35,483).............................    33,446
                                                                 --------
</TABLE>
<TABLE>
<CAPTION>
  NO. OF
 WARRANTS
- -----------
<C>          <S>                                                 <C>
WARRANTS (0.0%)
  UNITED STATES (0.0%)
  (a)25,000  Gold Reserve Corp., expiring 9/15/96 (Cost $0)....        11
                                                                 --------
TOTAL FOREIGN & U.S. SECURITIES (91.1%) (Cost $35,483).........    33,457
                                                                 --------
 
<CAPTION>
 
   FACE
  AMOUNT                                                          VALUE
   (000)                                                          (000)
<C>          <S>                                                 <C>
- ------------------------------------------------------------
SHORT-TERM INVESTMENT (8.6%)
  REPURCHASE AGREEMENT (8.6%)
$     3,159  Chase Securities, Inc. 5.15%, dated 6/28/96, due
               7/01/96, to be repurchased at $3,160,
               collateralized by $3,105, U.S. Treasury Notes,
               7.125%, due 9/30/99, valued at $3,174 (Cost
               $3,159).........................................  $  3,159
                                                                 --------
TOTAL INVESTMENTS (99.7%) (Cost $38,642).......................    36,616
                                                                 --------
</TABLE>
 
<TABLE>
<S>                                                 <C>        <C>
OTHER ASSETS (0.5%)
  Cash............................................  $       1
  Receivable for Investments Sold.................        136
  Dividends Receivable............................         26
  Interest Receivable.............................          1
  Other...........................................         19        183
                                                    ---------
LIABILITIES (-0.2%)
  Investment Sub-Advisory Fees Payable............        (30)
  Professional Fees Payable.......................        (15)
  Filing and Registration Fees Payable............        (12)
  Investment Advisory Fees Payable................         (9)
  Custodian Fees Payable..........................         (7)
  Administrative Fees Payable.....................         (6)
  Payable for Portfolio Shares Redeemed...........         (1)
  Other Liabilities...............................         (4)       (84)
                                                    ---------  ---------
NET ASSETS (100%)............................................    $36,715
                                                               ---------
                                                               ---------
NET ASSETS CONSIST OF:
Paid in Capital..............................................    $37,622
Undistributed Net Investment Income..........................         27
Accumulated Net Realized Gain................................      1,092
Unrealized Depreciation on Investments and Foreign Currency
  Translations...............................................     (2,026)
                                                               ---------
NET ASSETS...................................................    $36,715
                                                               ---------
                                                               ---------
CLASS A:
NET ASSETS...................................................    $35,688
NET ASSET VALUE, OFFERING AND REDEMPTION
  PRICE PER SHARE
  Applicable to 3,258,481 outstanding $0.001 par value shares
  (authorized 500,000,000 shares)............................     $10.95
                                                               ---------
                                                               ---------
CLASS B:
NET ASSETS...................................................     $1,027
NET ASSET VALUE, OFFERING AND REDEMPTION
  PRICE PER SHARE
  Applicable to 93,856 outstanding $0.001 par value shares
  (authorized 500,000,000 shares)............................     $10.94
                                                               ---------
                                                               ---------
</TABLE>
 
The accompanying notes are an integral part of the financial statements. (Pages
                                    182-188)
 
- --------------------------------------------------------------------------------
                                                                  Gold Portfolio
 
                                       43
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
STATEMENT OF NET ASSETS (UNAUDITED)
JUNE 30, 1996
- --------------------------------------------------------------------------------
 
THE GOLD PORTFOLIO (CONT.)
- --------------------------------------------------------------------------------
 
<TABLE>
<S>                                                 <C>        <C>
FORWARD FOREIGN CURRENCY EXCHANGE CONTRACT INFORMATION:
  Under the terms of forward foreign currency exchange contracts open at
  June 30, 1996, the Portfolio is obligated to deliver foreign currency
  in exchange for U.S. dollars as indicated below:
</TABLE>
 
<TABLE>
<CAPTION>
                                                IN
  CURRENCY TO                                EXCHANGE                NET UNREALIZED
    DELIVER                    SETTLEMENT      FOR                     GAIN (LOSS)
     (000)        VALUE (000)     DATE        (000)     VALUE (000)       (000)
- ---------------      -----     -----------  ----------     -----     ---------------
<S>               <C>          <C>          <C>         <C>          <C>
   AUD  173        $     136      7/03/96    U.S.$136    $     136      $      --
                       -----                                 -----          -----
                       -----                                 -----          -----
</TABLE>
 
- ------------------------------------------------
 
<TABLE>
<S>        <C>        <C>
(a)           --      Non-income producing security
ADR           --      American Depositary Receipt
GDR           --      Global Depositary Receipt
AUD           --      Australian Dollar
</TABLE>
 
- ------------------------------------------------
 
        SUMMARY OF FOREIGN & U.S. SECURITIES BY INDUSTRY CLASSIFICATION
 
<TABLE>
<CAPTION>
                                                        PERCENT
                                             VALUE       OF NET
INDUSTRY                                     (000)       ASSETS
<S>                                        <C>        <C>
- ------------------------------------------------------------------
Gold Mines...............................  $  33,457        91.1%
                                           ---------         ---
                                           ---------         ---
</TABLE>
 
The accompanying notes are an integral part of the financial statements. (Pages
                                    182-188)
 
- --------------------------------------------------------------------------------
Gold Portfolio
 
                                       44
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
 
OVERVIEW
- --------------------------------------------------------------------------------
 
THE INTERNATIONAL EQUITY PORTFOLIO
 
COMPOSITION OF NET ASSETS (AT JUNE 30, 1996)
 
EDGAR REPRESENTATION OF DATA POINTS USED IN PRINTED GRAPHIC
 
<TABLE>
<S>               <C>
Australia              4.9%
Belgium                0.8%
Denmark                2.0%
Finland                1.1%
France                 9.1%
Germany               10.5%
Hong Kong              2.8%
Italy                  3.0%
Japan                 21.9%
Netherlands            9.1%
New Zealand            0.3%
Norway                 1.2%
Singapore              0.2%
Spain                  4.5%
Sweden                 4.6%
Switzerland            6.7%
United Kingdom        10.1%
Other                  7.2%
</TABLE>
 
PERFORMANCE COMPARED TO THE MORGAN STANLEY
CAPITAL INTERNATIONAL (MSCI) EAFE INDEX(1)
- -----------------------------------------
 
<TABLE>
<CAPTION>
                                           TOTAL RETURNS(2)
                         -----------------------------------------------------
                                                                    AVERAGE
                                                      AVERAGE        ANNUAL
                                                      ANNUAL         SINCE
                            YTD        ONE YEAR     FIVE YEARS     INCEPTION
                         ----------  ------------  -------------  ------------
<S>                      <C>         <C>           <C>            <C>
PORTFOLIO -- CLASS A...      11.35%       18.67%        16.39%         11.72%
PORTFOLIO -- CLASS
B(3)...................      10.56          N/A           N/A            N/A
INDEX..................       4.52        13.28          9.99           3.95
 
<FN>
 
1. The MSCI EAFE Index is an unmanaged index of common stocks and includes
   Europe, Australia and the Far East (assumes dividends reinvested net of
   withholding taxes).
 
2. Total returns for the Portfolio reflect expenses waived and reimbursed, if
   applicable, by the Adviser. Without such waiver and reimbursement, total
   returns would be lower.
 
3. The Portfolio began offering Class B shares on January 2, 1996.
</TABLE>
 
PAST PERFORMANCE IS NOT PREDICTIVE OF FUTURE PERFORMANCE.
 
- ------------------------------------------------------------
 
THE COUNTRY SPECIFIC PERFORMANCE RESULTS PROVIDED ARE FOR INFORMATIONAL PURPOSES
ONLY AND SHOULD NOT BE CONSTRUED AS A GUARANTEE OF THE PORTFOLIO'S FUTURE
PERFORMANCE. PAST PERFORMANCE SHOWN IS NOT PREDICTIVE OF FUTURE PERFORMANCE.
INVESTMENT RETURN AND PRINCIPAL VALUE WILL FLUCTUATE SO THAT AN INVESTOR'S
SHARES, WHEN REDEEMED, MAY BE WORTH MORE OR LESS THAN THEIR ORIGINAL COST.
PLEASE SEE THE PROSPECTUS FOR A DESCRIPTION OF CERTAIN RISK CONSIDERATIONS
ASSOCIATED WITH INTERNATIONAL INVESTING.
 
The investment objective of the International Equity Portfolio is long-term
capital appreciation through investment primarily in equity securities of
non-U.S. issuers. Equity securities for this purpose include common stocks and
equivalents, such as securities convertible into common stocks, and securities
having common stock characteristics, such as rights and warrants to purchase
common stocks.
 
For the six month period ended June 30, 1996, the Portfolio had a total return
of 11.35% for the Class A shares and 10.56% for the Class B shares, as compared
to a total return of 4.52% for the Morgan Stanley Capital International (MSCI)
EAFE Index. The average annual total return for the twelve month and five year
periods ended June 30, 1996 and for the period from inception on August 4, 1989
through June 30, 1996 were 18.67%, 16.39% and 11.72%, respectively, for the
Class A shares, as compared to 13.28%, 9.99% and 3.95%, respectively, for the
Index.
 
The strong absolute and relative showing of the Portfolio during the first half
was principally attributable to strong stock selection in the markets of Japan,
Germany, Italy and Sweden, while France alone produced notably submarket
returns. The Portfolio suffered from its underweighting in British sterling but
this was made up for by its underweight position in yen and the substantial
hedges out of the deutschmark bloc. Returns for the period were not achieved in
an environment where cyclical stocks were particularly strong. Indeed growth
stocks have consistently outperformed value and local indices during the first
six months of the year.
 
Unfortunately the inevitable consequence of outperformance is that the value
perceived to be within the Portfolio must have achieved some degree of
recognition by the market. It must be said that this is the case across a broad
range of value investments including Japanese and German blue chips, Dutch
financials and Swiss cyclicals. The simultaneous upward movement in these
stocks, notwithstanding investor preference for growth stocks, has left pockets
of value to be investigated but no rich geographic concentration of value.
 
This leaves the value investor with this imponderable: Does one persevere with
quality when that quality has become well recognized by the market even if the
resultant pricing levels are reasonable rather than cheap, or does one seek a
new set of disagreements when markets are already extended and stocks that are
cheap tend to be cheap for a good reason? As ever, the correct course is the
middle course: new
 
- --------------------------------------------------------------------------------
                                                  International Equity Portfolio
 
                                       45
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
 
OVERVIEW
- --------------------------------------------------------------------------------
THE INTERNATIONAL EQUITY PORTFOLIO (CONT.)
disagreements must be sought with the market but with the caution that is
required at this stage of the cycle.
 
Portfolio activity during the period was moderate and highly specific,
reflecting our belief that no particular markets, or indeed industries, are
markedly undervalued.
 
GERMANY
 
The Morgan Stanley Capital International Germany Index fell by 0.29% in U.S.
dollar terms but increased by 2.81% in local currency terms in the second
quarter of the year. As these returns illustrate, the deutschemark has continued
its weaker trend against the U.S. dollar during this period. The large chemical
groups have continued their strong performance from the first quarter
outperforming the local market. The strongest performers this quarter have been
the retail stocks and food retailers, showing particularly good returns. This is
an area which has been out of favor but is now benefiting from the pick-up in
consumer sentiment. The financial stocks continue to show poor relative returns.
The German economy continues to be sluggish and this has led to market
commentators speculating about further interest rate cuts. Inflationary
pressures are still subdued and unemployment is likely to stay about 10% as
German industry continues to restructure. In this environment we are seeing
substantially lower wage deals with the unions. Germany continues to be an
attractive market for the value investor with value being realized in large and
small companies as the market continues to restructure.
 
FRANCE
 
During the second quarter of 1996 the Morgan Stanley Capital International
France Index increased by 2.49% in U.S. dollar terms and by 4.79% in local
currency terms. Following a poor year in 1995, France is one of the top
performing markets in Europe in 1996. Like Germany the retail stocks have
performed well in the first half of the year along with healthcare companies. In
the second quarter, we have seen improved performance from the large integrated
oil companies. The sluggish economic growth rate and relative strength of the
franc encouraged the Banque de France to cut its key interest rate on April 11th
to 3.7%. By the end of April a historic time was reached when French long term
interest rates fell below those in Germany. The French government's restrictive
budgetary policy seems to be working. There was a negative surprise in both
March and April with an increase in inflation, taking the current annual rate to
2.3%. The French authorities were quick to argue that this was a temporary
phenomenon. Although the French market continues to look expensive relative to
some other markets it is one in which the stock picker can continue to find good
quality cheap investment opportunities.
 
SWITZERLAND
 
The Morgan Stanley Capital International Switzerland Index fell by 2.53% in U.S.
dollar terms but increased by 2.48% in Swiss Franc terms in the second quarter
of the year. The performance of the Swiss equity market varied throughout the
quarter. The return in May was poor but in June the market returned 5.0%, in
U.S. dollar terms. During the quarter the industrial stocks showed strong
relative performance with electronic and engineering stocks showing particularly
good returns. Following a good run the pharmaceutical stocks lost some ground
during the month while the financial sectors continued to underperform.
Following an extended run, the Swiss franc has been the weakest major currency
this year. This has helped the competitive position of many export related
companies and led to consistent upgrading by the market of these companies'
earnings. Economic growth in Switzerland has been slow but this has enabled
inflation rates to remain low despite the introduction of VAT. Despite the weak
currency, inflation levels should remain low and this could allow the
authorities to keep interest rates at low levels. This is a good environment for
the equity investor and it remains a market in which we are overweight.
 
NETHERLANDS
 
In the second quarter of 1996 the Morgan Stanley Capital International
Netherlands Index increased by 5.33% in U.S. dollar terms and by 8.8% in local
currency terms. During the quarter retail stocks have been the top performers
showing particularly good returns in June. The banks also continued their good
run at a time when financials have generally been weak in the European market. A
sector that was particularly weak was electronics, with Philips declining over
concerns for the semi-conductor industry. In 1995 the Dutch economy was one of
the strongest in Europe although towards the end of the year exports started to
slow down due to the strength of the guilder and weak demand from their main
trade partners. In the first half of this year the weaker Dutch currency has led
again to a pick-up in exports. The most recent numbers show that there has been
a small pick-up in inflation but on the positive side there has been a small
fall in unemployment. The Netherlands remains a good market for the value
investor offering good quality cheap companies.
 
- --------------------------------------------------------------------------------
International Equity Portfolio
 
                                       46
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
 
OVERVIEW
- --------------------------------------------------------------------------------
THE INTERNATIONAL EQUITY PORTFOLIO (CONT.)
 
SPAIN
 
During the second quarter of 1996 the Morgan Stanley Capital International Spain
Index rose by 7.39% in U.S. dollar terms and by 10.94% in local currency terms.
These returns make Spain the top performing European market during the quarter.
Following the disappointment of the Spanish general election failing to produce
a clear winner and the subsequent fall of the market in March this has been a
strong recovery. The best performing sectors have been the utilities, with
Telefonica and the electrical utilities showing particularly strong returns. The
food retailers also showed good relative gains. The financial sectors,
particularly the insurers, continued to underperform, however. The most recent
economic data to come out of Spain has been fairly poor. Between January and
March both nominal imports and exports declined by some 5% compared with rates
about 20% the year before. A reduction in investment growth has led to lower GDP
growth of 1.9% year-on-year in the first quarter. Unemployment remains the main
problem in Spain, however, with the rate still above 22%.
 
ITALY
 
The Morgan Stanley Capital International Italy Index increased by 13.42% in U.S.
dollar terms during the second quarter and by 10.77% in Italian lira terms.
These make it the top performing developed market in the world during this
period, in U.S. dollar terms, helped by the strength of the lira. The best
performing sectors have been the utilities with both telecommunications and the
electricity businesses showing strong relative returns. The food production
companies also showed good returns during this period. The financials continued
to underperform while media and retail stocks also showed relative poor returns.
Although the Italian economy has been weaker recently it continues to offer some
of the best growth in Europe. The environment for the equity investor remains
good with inflation expected to soon be below 4% giving the central bank the
opportunity to cut interest rates. Despite the pick-up in economic activity in
recent months, the unemployment rate continues to edge up. In April it reached
12.3%, up from 12% a year ago.
 
U.K.
 
In the second quarter of 1996 the Morgan Stanley Capital International U.K.
Index rose by 2.54% in U.S. dollar terms and by 0.74% in local currency terms.
Quarterly economic data continued to illustrate a sluggish U.K. economy in a
generally benign inflationary environment. Recent inflation figures were better
than expected, with inflation rising 2.8% year-on-year in May 1996 following 3
months each with respective year-on-year increases of 2.9%. This, in conjunction
with subdued producer price inflation, helped explain an unexpected base rate
cut from 6.0% to 5.75% on June 6, 1996. The manufacturing output backdrop
continued to be subdued, with a rise of only 0.3% year-on-year in April 1996,
reflecting the slowdown in previously healthy export growth, continued sluggish
domestic demand and consequent stock usage. A continuing positive trend for
retail sales increasingly suggests the possible emergence of a traditional U.K.
consumer boom, with the housing market continuing to strengthen.
 
The quarter has reflected various rotational trends in the market. Cyclicals and
export-oriented stocks (in particular ICI, British Steel, Pilkington and Rexam)
have been hit, driven partly by a 5% appreciation in the quarter of sterling
against the DM bloc. This has been mirrored by recent interest in defensives,
particularly those with global earnings and growth characteristics such as
pharmaceuticals and health care. Domestically, this was expressed through
sustained interest in anything consumer expenditure related, with general
retailers, food retailers, breweries/pubs and leisure and hotels as some of the
top performing sectors in the quarter - valuations here, bar food retailers, are
looking very stretched. This was also driven by increasing political worries by
U.K. institutions, in part due to perceived risks of a Labour government and
partly due to recent regulatory action. Consequently, utilities was one of the
worst performing sectors in the quarter, in spite of some bid interest buoying
up water. In particular, gas distribution was clobbered following the swinging
review by Ofgas of British Gas, the worst performing stock in the quarter. Close
behind British Gas was BTR, the diverse conglomerate which plummeted on fears of
a possible dividend cut, making diverse industries the second worst performing
U.K. sector in the quarter. Small capitalization stocks significantly
outperformed large stocks in the quarter, although underperformed in the last
month.
 
Value continues to be scarce in the U.K. market, despite underperformance
compared to European markets. Stock selection remains of key importance.
 
JAPAN
 
The moderate local currency gain in the Japanese stock market during the second
quarter was substantially offset by currency weakness, the Morgan Stanley
Capital International Japan Index appreciating a meager 0.77% in U.S. dollars
against a 3.50% gain in Japanese yen.
 
- --------------------------------------------------------------------------------
                                                  International Equity Portfolio
 
                                       47
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
 
OVERVIEW
- --------------------------------------------------------------------------------
THE INTERNATIONAL EQUITY PORTFOLIO (CONT.)
 
The singular event of the quarter was the GNP figure for the first quarter which
implied annualized economic growth of 12% year-on-year, a stunning figure. The
Bank of Japan, however, was quick to point out that within these figures were an
exceptional acceleration in public spending and an upward blip in housing
relating to the expiry of cheap mortgage financings. Be that as it may, the
figure still confirmed that private capital expenditure and consumption are on a
firm recovery trend. It is therefore a little surprising that the Bank of Japan
was so careful to signal to markets that its overtly easy monetary policy will
continue. This means that the Japanese stock market valuations have a somewhat
promising backdrop. Short and long term interest rates are low, the weakening
yen is bolstering corporate profits and the economic recovery is being driven
along by government expenditure while fiscal and monetary policies remain
exceptionally low. If it was possible to extrapolate this set of circumstances
beyond the remainder of this year, value or no value, this market could only go
upwards especially since domestic institutions are so underweight equities.
 
With the budget deficit, however, reaching 7% of GNP this year and wholesale
price inflation already moving up towards 1.5% year-on-year, some fiscal and
monetary tightening will eventuate by year end. If it does not, the bond market
is likely to exhibit sufficient weakness to cap the upside of the stockmarket.
In the meantime, it must be stressed that quality Japanese companies are selling
at extended valuations on an absolute and relative basis. Irrespective of their
impressive recovery prospects, double figure cash flow multiples for Honda and
Toyota appear exceptionally demanding and the same can be said for the
electrical majors except those confronting the dire consequences of a collapse
in semiconductor memory prices.
 
Therefore, we conclude that quality beneficiaries of yen weakness already
discount a full earnings recovery and that any wholesale return of domestic
investors to the stock market will bring a change of leadership to sectors of
little interest to the value investor.
 
HONG KONG
 
During the second quarter of 1996 the Hong Kong stock market marked time at high
levels, the Morgan Stanley Capital International Hong Kong Index appreciated
0.84% in U.S. dollars and 0.95% in Hong Kong dollars. This was a creditable
performance given that U.S. interest rates gave little relief to a market that
was at recovery high levels at the beginning of the quarter. China has made it
abundantly clear that the colony will come under its control in June 1997 in
buoyant economic conditions and therefore one should be confident that political
fears will be allayed in the next year. Given a gradual recovery in the mainland
economy and a continued recovery of the local property market, both residential
and commercial, it is easy to be optimistic as to the fundamental outlook for
this market.
 
In our view, however, at its current level the market discounts a full-bloodied
economic recovery with the exception of commercial property stocks which offer
limited upside if the expected moderate improvement in rentals occurs.
 
Probably the best value in Hong Kong, however, is the Hong Kong Bank, listed in
London.
 
AUSTRALIA
 
The Australian stock market was becalmed in the second quarter, the Morgan
Stanley Capital International Australia Index appreciated 0.05% in Australian
dollars and 0.66% in U.S. dollars.
 
Though the Australian dollar remained firm during the quarter, it was a period
of softening for commodity prices, and resource stocks consequently weakened.
Meanwhile, in the banking sector competitive pressures and a bottoming out of
the loan loss cycle led to an abrupt end to this sector's relative strength. The
industrial sector was resilient but this was after a period of relative
weakness.
 
We still believe the resources sector to be fundamentally overvalued with
international investors tolerating high valuations out of respect for the
quality of Australia's mining houses.
 
Meanwhile, we believe the banking sector's earnings cycle has peaked though
takeover possibilities abound. The industrial sector is fairly valued but
earnings growth will continue to disappoint, the outlook for housing being
particularly weak in the short term.
 
Dominic Caldecott
PORTFOLIO MANAGER
 
July 1996
 
- --------------------------------------------------------------------------------
International Equity Portfolio
 
                                       48
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
STATEMENT OF NET ASSETS (UNAUDITED)
JUNE 30, 1996
- --------------------------------------------------------------------------------
 
THE INTERNATIONAL EQUITY PORTFOLIO
 
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>
                                                                     VALUE
   SHARES                                                            (000)
- ------------------------------------------------------------
<C>            <S>                                                 <C>
COMMON STOCKS (89.4%)
  AUSTRALIA (4.9%)
    3,200,000  Australia & New Zealand Banking Group Ltd.........  $   15,140
    3,470,000  Brambles Industries Ltd...........................      48,218
    4,410,000  Coles Myer Ltd....................................      16,013
    5,500,000  CSR Ltd...........................................      19,409
                                                                   ----------
                                                                       98,780
                                                                   ----------
  BELGIUM (0.8%)
    (a)52,500  Arbed S.A.........................................       6,013
      243,350  G.I.B. Holdings Ltd...............................      10,931
        2,156  G.I.B. Holdings Ltd. VVPR (New)...................          96
                                                                   ----------
                                                                       17,040
                                                                   ----------
  DENMARK (2.0%)
      120,100  Den Danske Bank...................................       8,061
      111,250  Novo-Nordisk A/S, Class B.........................      15,769
      352,500  Unidanmark A/S, Class A (Registered)..............      16,374
                                                                   ----------
                                                                       40,204
                                                                   ----------
  FINLAND (1.1%)
      350,000  Huhtamaki Oy, Series 1............................      11,720
   (a)168,467  Merita Ltd., Class A..............................         353
      280,000  Nokia AB Oy, Series A.............................      10,343
                                                                   ----------
                                                                       22,416
                                                                   ----------
  FRANCE (9.1%)
      204,640  Assurances Generales de France....................       5,551
      576,350  Banque Nationale de Paris.........................      20,266
       15,510  Bongrain S.A......................................       7,515
      174,827  Cie de Saint Gobain...............................      23,440
   (a)153,050  Credit Lyonnaise CDI..............................       3,589
      350,000  Elf Aquitaine.....................................      25,785
       94,400  Groupe Danone.....................................      14,310
      240,600  Lafarge Coppee S.A................................      14,584
      175,000  PSA Peugeot Citroen S.A...........................      23,463
      355,700  Thomson CSF S.A...................................      10,015
      255,000  Total S.A., Class B...............................      18,945
      346,980  Valeo S.A.........................................      18,601
                                                                   ----------
                                                                      186,064
                                                                   ----------
  GERMANY (7.2%)
       75,000  BASF AG...........................................      21,390
    1,050,000  Bayer AG..........................................      36,992
       50,000  Commerzbank AG....................................      10,355
      287,500  Hoechst AG........................................       9,722
       90,500  Karstadt AG.......................................      36,081
       36,425  Mannesmann AG.....................................      12,557
    (a)24,900  Varta AG..........................................       5,340
      245,700  Veba AG...........................................      13,077
        5,250  Volkswagen AG.....................................       1,957
                                                                   ----------
                                                                      147,471
                                                                   ----------
  HONG KONG (2.7%)
    (d)90,600  China Light & Power Co., Ltd......................         410
    7,000,000  Hong Kong Land Holdings Ltd.......................      15,750
   12,000,000  Jardine Strategic Holdings, Inc...................      38,400
                                                                   ----------
                                                                       54,560
                                                                   ----------
 
<CAPTION>
                                                                     VALUE
   SHARES                                                            (000)
<C>            <S>                                                 <C>
- ------------------------------------------------------------
 
  ITALY (3.0%)
(a)14,000,000  Olivetti Di Risp..................................  $    7,563
 (a)2,560,500  Olivetti Di Risp (NCS)............................       1,265
   11,000,000  Stet Di Risp (NCS)................................      28,922
    5,300,000  Telecom Italia S.p.A..............................      11,408
    6,800,000  Telecom Italia S.p.A. Di Risp (NCS)...............      11,749
       90,000  TIM S.p.A.........................................         201
                                                                   ----------
                                                                       61,108
                                                                   ----------
  JAPAN (21.9%)
    1,050,000  Aisin Seiki Co., Ltd..............................      15,847
    1,000,000  Canon, Inc........................................      20,855
      123,000  Chudenko Corp.....................................       4,478
    1,500,000  Daibiru Corp......................................      20,032
    1,600,000  Daicel Chemical Industry Ltd......................       9,879
      660,000  Daikin Industries Ltd.............................       7,244
    1,037,000  Dainippon Ink & Chemical, Inc.....................       5,331
        4,000  East Japan Railway Co.............................      21,038
    2,150,000  Fuji Photo Film Ltd...............................      68,045
    2,700,000  Hitachi Ltd.......................................      25,191
    2,250,000  Kao Corp..........................................      30,460
      650,000  Kirin Brewery Co., Ltd............................       7,967
    1,633,000  Matsushita Electric Industries Ltd................      30,472
       81,000  Murata Manufacturing Co., Ltd.....................       3,075
    3,427,200  Nichido Fire & Marine Insurance Co., Ltd..........      26,552
        2,711  Nippon Telegraph & Telephone Corp.................      20,136
      221,000  Ryosan Co.........................................       5,721
      350,000  Sony Corp.........................................      23,082
    2,100,000  Sumitomo Marine & Fire Insurance Co...............      18,344
    3,000,000  Sumitomo Rubber Industries........................      26,042
      350,000  TDK Corp..........................................      20,938
    1,010,000  Toyo Seikan Kaisha Ltd............................      35,291
                                                                   ----------
                                                                      446,020
                                                                   ----------
  NETHERLANDS (9.1%)
      812,517  ABN Amro Holdings N.V.............................      43,665
      230,000  Akzo Nobel N.V....................................      27,594
       84,436  Hollandsche Beton Groep N.V.......................      16,199
    1,425,000  ING Groep N.V.....................................      42,553
      258,500  Koninklijke Bijenkorf Beheer N.V..................      21,869
      153,050  Nedlloyd Groep N.V................................       3,529
      892,300  Philips Electronics N.V...........................      29,054
                                                                   ----------
                                                                      184,463
                                                                   ----------
  NEW ZEALAND (0.3%)
    2,144,627  Fisher & Paykel Industries Ltd....................       6,905
 (a,d)392,500  Smith City Group Ltd..............................          --
                                                                   ----------
                                                                        6,905
                                                                   ----------
  NORWAY (1.2%)
    3,500,000  Den Norske Bank A/S...............................      10,630
      393,600  Hafslund Nycomed, Class B.........................       2,488
   (a)650,000  Nycomed ASA, Class A..............................       9,369
    (a)93,850  Nycomed ASA, Class B..............................       1,302
                                                                   ----------
                                                                       23,789
                                                                   ----------
</TABLE>
 
The accompanying notes are an integral part of the financial statements. (Pages
                                    182-188)
 
- --------------------------------------------------------------------------------
                                                  International Equity Portfolio
 
                                       49
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
STATEMENT OF NET ASSETS (UNAUDITED)
JUNE 30, 1996
- --------------------------------------------------------------------------------
 
THE INTERNATIONAL EQUITY PORTFOLIO (CONT.)
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>
                                                                     VALUE
   SHARES                                                            (000)
- ------------------------------------------------------------
<C>            <S>                                                 <C>
  SINGAPORE (0.2%)
    3,265,000  Neptune Orient Lines Ltd. (Foreign)...............  $    3,425
                                                                   ----------
  SPAIN (4.5%)
    (a)89,300  Grupo Duro Felguera S.A...........................         386
    2,745,000  Iberdrola S.A.....................................      28,219
      590,000  Repsol S.A........................................      20,548
    2,261,150  Telefonica Nacional de Espana S.A.................      41,718
                                                                   ----------
                                                                       90,871
                                                                   ----------
  SWEDEN (4.6%)
      198,070  Electrolux AB, Series B...........................       9,986
      429,300  Nordbanken AB.....................................       8,307
      592,600  Skandia Forsakrings AB............................      15,722
    1,418,500  Skandinaviska Enskilda Banken, Class A............      11,365
      899,100  S.K.F. AB, Class B................................      21,408
      364,600  Sparbenken Sverige AB, Class A....................       4,740
    1,014,000  Svenska Cellulosa AB, Class B.....................      20,924
    (a)36,460  Tornet Fastighets AB..............................         298
                                                                   ----------
                                                                       92,750
                                                                   ----------
  SWITZERLAND (6.7%)
        2,605  Ascom Holdings AG (Bearer)........................       2,627
          160  Ciba-Geigy AG (Bearer)............................         194
       35,000  Ciba-Geigy AG (Registered)........................      42,717
       20,000  Forbo Holding AG (Registered).....................       8,483
       10,800  Holderbank Financiere Glaris AG (Bearer)..........       8,644
       36,085  Nestle S.A. (Registered)..........................      41,269
        9,560  Schindler Holding AG (Participating
                 Certificates)...................................      10,176
       15,550  Sulzer AG (Participating Certificates)............       9,334
       18,450  Sulzer AG (Registered)............................      11,872
                                                                   ----------
                                                                      135,316
                                                                   ----------
  UNITED KINGDOM (10.1%)
    1,260,000  Associated British Foods plc......................       7,575
 (a)1,360,104  Automated Security Holdings plc...................         782
    2,625,900  BAT Industries plc................................      20,437
    4,905,000  Christian Salvesen plc............................      19,621
    2,309,300  English China Clays plc...........................       9,292
    3,521,546  Grand Metropolitan plc............................      23,360
    4,951,389  John Mowlem & Co. plc.............................       6,923
    2,400,000  Kwik Save Group plc...............................      16,890
      843,000  McAlpine (Alfred) plc.............................       1,977
    2,221,958  Reckitt & Colman plc..............................      23,334
    2,032,700  Rolls-Royce plc...................................       7,073
    1,982,857  Royal Insurance Holdings plc......................      12,260
      258,000  Tate & Lyle plc...................................       1,836
    2,252,100  Unilever plc......................................      44,782
    2,975,000  WPP Group plc.....................................       9,937
                                                                   ----------
                                                                      206,079
                                                                   ----------
TOTAL COMMON STOCKS (Cost $1,453,696)............................   1,817,261
                                                                   ----------
<CAPTION>
                                                                     VALUE
   SHARES                                                            (000)
<C>            <S>                                                 <C>
- ------------------------------------------------------------
 
PREFERRED STOCKS (3.3%)
  GERMANY (3.3%)
      762,600  RWE AG............................................  $   23,455
       29,525  Spar Handels AG...................................       8,236
      125,000  Volkswagen AG.....................................      34,293
                                                                   ----------
TOTAL PREFERRED STOCKS (Cost $46,222)............................      65,984
                                                                   ----------
CONVERTIBLE PREFERRED STOCKS (0.1%)
  HONG KONG (0.1%)
    1,863,000  Jardine Strategic Holdings, Inc., IDR, 7.50%,
                 5/07/97.........................................       2,026
                                                                   ----------
  NETHERLANDS (0.0%)
        1,506  ABN Amro Holdings N.V.............................           6
        2,196  ING Groep N.V.....................................          11
                                                                   ----------
                                                                           17
                                                                   ----------
TOTAL CONVERTIBLE PREFERRED STOCKS (Cost $1,923).................       2,043
                                                                   ----------
<CAPTION>
 
   NO. OF
  WARRANTS
- -------------
<C>            <S>                                                 <C>
WARRANTS (0.0%)
  SWITZERLAND (0.0%)
     (a)5,235  Schindler Holding AG, expiring 12/16/96 (Cost
                 $0).............................................          10
                                                                   ----------
TOTAL FOREIGN SECURITIES (92.8%) (Cost $1,501,841)...............   1,885,298
                                                                   ----------
<CAPTION>
 
    FACE
   AMOUNT
    (000)
- -------------
<C>            <S>                                                 <C>
SHORT-TERM INVESTMENT (1.6%)
  REPURCHASE AGREEMENT (1.6%)
$      32,796  Chase Securities, Inc. 5.15%, dated 6/28/96, due
                 7/01/96, to be repurchased at $32,810,
                 collateralized by $32,220 U.S. Treasury Notes,
                 7.125%, due 9/30/99, valued at $32,940 (Cost
                 $32,796)........................................      32,796
                                                                   ----------
FOREIGN CURRENCY (6.5%)
BEF    7,030   Belgian Franc.....................................         225
GBP  31,709    British Pound.....................................      49,260
DKK     20     Danish Krone......................................           3
DEM  66,567    Deutsche Mark.....................................      43,794
ITL    9,779   Italian Lira......................................           6
JPY 3,985,925  Japanese Yen......................................      36,459
NLG      20    Netherlands Guilder...............................          12
NOK      4     Norwegian Krone...................................           1
SGD   1,670    Singapore Dollar..................................       1,184
ESP   10,542   Spanish Peseta....................................          82
SEK    1,376   Swedish Krona.....................................         208
CHF     705    Swiss Franc.......................................         564
                                                                   ----------
TOTAL FOREIGN CURRENCY (Cost $131,550)...........................     131,798
                                                                   ----------
</TABLE>
 
The accompanying notes are an integral part of the financial statements. (Pages
                                    182-188)
 
- --------------------------------------------------------------------------------
International Equity Portfolio
 
                                       50
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
STATEMENT OF NET ASSETS (UNAUDITED)
JUNE 30, 1996
- --------------------------------------------------------------------------------
 
THE INTERNATIONAL EQUITY PORTFOLIO (CONT.)
- --------------------------------------------------------------------------------
 
<TABLE>
<CAPTION>
                                                                   VALUE
                                                                   (000)
<S>                                                 <C>          <C>
- ------------------------------------------------------------
TOTAL INVESTMENTS (100.9%) (Cost $1,666,187)...................  $2,049,892
                                                                 ----------
OTHER ASSETS (15.6%)
  Securities, at Value, Held as Collateral for
   Securities Loaned..............................  $   286,019
  Net Unrealized Gain on Forward Foreign Currency
    Exchange Contracts............................       22,149
  Dividends Receivable............................        6,142
  Foreign Withholding Tax Reclaim Receivable......        1,581
  Receivable for Investments Sold.................          854
  Receivable for Portfolio Shares Sold............          346
  Security Lending Income Receivable..............           57
  Interest Receivable.............................           14
  Other...........................................           82     317,244
                                                    -----------
LIABILITIES (-16.5%)
  Collateral on Securities Loaned, at Value.......     (286,019)
  Payable for Investments Purchased...............      (34,453)
  Bank Overdraft..................................       (9,140)
  Investment Advisory Fees Payable................       (3,755)
  Payable for Portfolio Shares Redeemed...........       (1,053)
  Administrative Fees Payable.....................         (252)
  Custodian Fees Payable..........................         (154)
  Security Lending Fees Payable...................          (37)
  Directors' Fees and Expenses Payable............          (31)
  Net Receivable for Closed Forward Foreign
   Currency Exchange Contracts....................          (16)
  Dividends Payable...............................           (4)
  Distribution Fees Payable.......................           (3)
  Other Liabilities...............................         (222)   (335,139)
                                                    -----------  ----------
NET ASSETS (100%)..............................................  $2,031,997
                                                                 ----------
                                                                 ----------
NET ASSETS CONSIST OF:
Paid in Capital................................................  $1,545,435
Undistributed Net Investment Income............................      35,264
Accumulated Net Realized Gain..................................      45,541
Unrealized Appreciation on Investments and Foreign Currency
  Translations.................................................     405,757
                                                                 ----------
NET ASSETS.....................................................  $2,031,997
                                                                 ----------
                                                                 ----------
CLASS A:
NET ASSETS.....................................................  $2,027,199
</TABLE>
 
<TABLE>
<C>          <S>                                                 <C>
NET ASSET VALUE, OFFERING AND REDEMPTION
  PRICE PER SHARE
  Applicable to 120,136,109 outstanding $0.001 par value
  shares (authorized 500,000,000 shares).......................      $16.87
                                                                 ----------
                                                                 ----------
CLASS B:
NET ASSETS.....................................................      $4,798
NET ASSET VALUE, OFFERING AND REDEMPTION
  PRICE PER SHARE
  Applicable to 284,733 outstanding $0.001 par value shares
  (authorized 500,000,000 shares)..............................      $16.85
                                                                 ----------
                                                                 ----------
 
- ------------------------------------------------------------
FORWARD FOREIGN CURRENCY EXCHANGE CONTRACT INFORMATION:
  Under the terms of forward foreign currency exchange contracts open at
  June 30, 1996, the Portfolio is obligated to deliver or is to receive
  foreign currency in exchange for U.S. dollars or foreign currency as
  indicated below:
</TABLE>
 
<TABLE>
<CAPTION>
                                                                  NET
 CURRENCY TO                          IN EXCHANGE             UNREALIZED
   DELIVER      VALUE    SETTLEMENT       FOR        VALUE    GAIN (LOSS)
    (000)       (000)       DATE         (000)       (000)       (000)
- -------------  --------  ----------   ------------  --------  -----------
<S>            <C>       <C>          <C>           <C>       <C>
DEM    391     $    257    7/01/96    NOK  1,667    $    257    $    --
DEM   4,600       3,027    7/02/96    AUD  3,830       3,010        (17)
DEM    905          595    7/02/96    ITL 910,984        595         --
DEM 153,000     100,919    8/09/96    U.S.$106,895   106,895      5,976
SEK  240,000     36,266    9/16/96    U.S.$ 35,021    35,021     (1,245)
FRF  153,000     29,919   10/11/96    U.S.$ 30,551    30,551        632
JPY 5,801,100    53,871   10/11/96    U.S.$ 61,000    61,000      7,129
NLG 118,000      69,923   11/14/96    U.S.$ 76,106    76,106      6,183
ESP 5,400,000    41,937   12/02/96    U.S.$ 42,584    42,584        647
JPY 3,100,000    29,106   12/24/96    U.S.$ 31,950    31,950      2,844
               --------                             --------  -----------
               $365,820                             $387,969    $22,149
               --------                             --------  -----------
               --------                             --------  -----------
</TABLE>
 
- ------------------------------------------------------------
 
<TABLE>
<S>        <C>        <C>
(a)           --      Non-income producing security
(d)           --      Security is valued at fair value -- See note A-1
                      to financial statements
CDI           --      Certificate of Investment
IDR           --      International Depositary Receipt
NCS           --      Non Convertible Shares
AUD           --      Australian Dollar
FRF           --      French Franc
</TABLE>
 
- ------------------------------------------------------------
 
            SUMMARY OF FOREIGN SECURITES BY INDUSTRY CLASSIFICATION
 
<TABLE>
<CAPTION>
                                                      PERCENT
                                           VALUE       OF NET
INDUSTRY                                   (000)       ASSETS
<S>                                      <C>        <C>
- ----------------------------------------------------------------
Capital Equipment......................  $ 335,888        16.5%
Consumer Goods.........................    498,094        24.5
Energy.................................    109,891         5.4
Finance................................    307,535        15.2
Materials..............................    314,967        15.5
Multi-Industry.........................     80,563         4.0
Services...............................    238,360        11.7
                                         ---------         ---
                                         $1,885,298       92.8%
                                         ---------         ---
                                         ---------         ---
</TABLE>
 
The accompanying notes are an integral part of the financial statements. (Pages
                                    182-188)
 
- --------------------------------------------------------------------------------
                                                  International Equity Portfolio
 
                                       51
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
 
OVERVIEW
- --------------------------------------------------------------------------------
 
THE INTERNATIONAL MAGNUM PORTFOLIO
 
COMPOSITION OF NET ASSETS (AT JUNE 30, 1996)
 
EDGAR REPRESENTATION OF DATA POINTS USED IN PRINTED GRAPHIC
 
<TABLE>
<S>               <C>
Australia              2.9%
Austria                0.5%
Belgium                0.9%
Denmark                0.6%
Finland                1.4%
France                 5.0%
Germany                4.8%
Hong Kong              6.8%
Italy                  3.0%
Japan                 38.3%
Malaysia               2.7%
Netherlands            5.0%
Norway                 0.9%
Singapore              2.0%
Spain                  3.2%
Sweden                 1.8%
Switzerland            5.8%
United Kingdom         6.0%
Other                  8.4%
</TABLE>
 
PERFORMANCE COMPARED TO THE MORGAN STANLEY
CAPITAL INTERNATIONAL (MSCI) EAFE INDEX(1)
- -----------------------------------------
 
<TABLE>
<CAPTION>
                                              TOTAL RETURNS(2)
                                              -----------------
                                                     YTD
                                              -----------------
<S>                                           <C>
PORTFOLIO -- CLASS A(3).....................          4.40%
PORTFOLIO -- CLASS B(3).....................          4.20
INDEX.......................................          3.73
 
<FN>
 
1. The MSCI EAFE Index is an unmanaged index of common stocks and includes
   Europe, Australia and the Far East (assumes dividends reinvested net of
   withholding taxes).
 
2. Total returns for the Portfolio reflect expenses waived and reimbursed, if
   applicable, by the Adviser. Without such waiver and reimbursement, total
   returns would be lower.
 
3. Commencement of operations March 15, 1996.
</TABLE>
 
PAST PERFORMANCE IS NOT PREDICTIVE OF FUTURE PERFORMANCE.
 
- ------------------------------------------------------------
 
THE COUNTRY SPECIFIC PERFORMANCE RESULTS PROVIDED ARE FOR INFORMATIONAL PURPOSES
ONLY AND SHOULD NOT BE CONSTRUED AS A GUARANTEE OF THE PORTFOLIO'S FUTURE
PERFORMANCE. PAST PERFORMANCE SHOWN IS NOT PREDICTIVE OF FUTURE PERFORMANCE.
INVESTMENT RETURN AND PRINCIPAL VALUE WILL FLUCTUATE SO THAT AN INVESTOR'S
SHARES, WHEN REDEEMED, MAY BE WORTH MORE OR LESS THAN THEIR ORIGINAL COST.
PLEASE SEE THE PROSPECTUS FOR A DESCRIPTION OF CERTAIN RISK CONSIDERATIONS
ASSOCIATED WITH INTERNATIONAL INVESTING.
 
The investment objective of the International Magnum Portfolio is long-term
capital appreciation by investing primarily in equity securities of non-U.S.
issuers in accordance with the EAFE country weightings determined by the
Adviser. The EAFE countries in which the Portfolio will invest are those
comprising the Morgan Stanley Capital International (MSCI) EAFE Index, which
includes Australia, Japan, New Zealand, most nations located in Western Europe,
and certain developed countries in Asia.
 
For the period from inception on March 15, 1996 through June 30, 1996, the
Portfolio had a total return of 4.40% for the Class A shares and 4.20% for the
Class B shares, as compared to a total return of 3.73% for the MSCI EAFE Index.
 
The International Magnum Portfolio was launched on March 15, 1996 at a NAV of
$10.00 per share. Launched into a rallying international equity market, the
Portfolio got off to a strong start. Although cash was invested quickly,
securities could not be bought fast enough to catch up to the surging Index.
With a mere two weeks of performance before quarter-end, it is not meaningful to
provide much more in terms of analysis of first quarter results. As a result,
the balance of this report will focus on the second quarter of 1996.
 
During the second quarter of 1996, world markets were volatile as investors'
concerns about inflation and rising interest rates waxed and waned. The EAFE
markets performed well overall in April (+2.9%), with Japan, Italy and Malaysia
all putting in strong performances in U.S. dollar terms. Several key markets
including Japan and southeast Asia declined during May as signs of inflation
grew threatening and investors feared tightening monetary policy. However,
during June, economic data suggested that moderate growth and low inflation
were, in fact, more dominant than previously thought, helping the equity markets
to recover somewhat. Europe is still struggling with Maastricht criteria, while
Japan, which had seemed to be depressed, surprised the market with strong GDP
data for the first quarter. Asia continues to grow, but remains at risk from
rising U.S. interest rates.
 
For the period ended March 31, 1996, the Portfolio had a total return of 0.90%
for the Class A shares and 0.90% for the Class B shares as compared with 2.11%
for the Index. Performance was enhanced by strong stock selection in Europe and
Japan as well as by our currency hedges, which helped us to capture much of the
strength of the local markets.
 
During the quarter, the U.S. dollar continued to strengthen following the trends
of the first quarter.
 
- --------------------------------------------------------------------------------
International Magnum Portfolio
 
                                       52
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
 
OVERVIEW
- --------------------------------------------------------------------------------
THE INTERNATIONAL MAGNUM PORTFOLIO (CONT.)
The yen, despite some mid-quarter volatility, depreciated over 2.5% to nearly
110 Y/$, while the Deutschemark fell over 3.0% to 1.52 DM/$. Our long-standing
policy of hedging the yen 75% and the Deutschemark block currencies by 95%
helped the portfolio's performance as these currencies continued to weaken
versus the dollar during the quarter. Looking ahead, we have reduced our hedges
to 50% of our yen exposure and 65% of the Deutschemark block. We still believe
in the secular strength of the U.S. dollar, but the dollar has made a big move
in the past twelve months and U.S. stock market weakness as well as the relative
monetary policy stance of the Fed, the Bank of Japan and the Bundesbank may
cloud the issues in the near term. Specifically, with a German rate cut looking
less likely and sporadic rumors of a BoJ rate hike, the U.S. Fed's hesitation to
raise U.S. interest rates in early July may dampen U.S. dollar sentiment over
the near term.
 
Despite economic stagnation in much of Europe, several European markets were
among the strongest performers (in U.S. dollar terms) within EAFE for the
quarter. Specifically, Italy's market appreciated by 13%, Ireland's by 8% and
Norway's by 7.1% to lead the EAFE countries. Overall, the MSCI Europe Index rose
2.6% for the quarter in dollar terms and 3.8% in local currency terms. European
economies appear to be reaching a bottom, with the potential for future monetary
easing coming to an end. We expect to see growth pick up in the second half of
this year. Restructurings of many companies have been a drag on earnings growth
in the short term, but should benefit earnings in the long run as these
companies become more competitive -- just as we have seen in the U.S. The
European sector of our portfolio continues to be positioned approximately 25% in
small capitalization stocks, which have performed well this year. It has become
increasingly difficult to find value in the stocks of larger European companies.
In terms of markets, we see opportunity in Germany and Italy, and to a lesser
extent in Spain, Switzerland and France. We have started to purchase retailing
stocks in anticipation of an improvement in consumer sentiment, as well as
banks, which have responded well to the low interest rate environment.
 
The Asian region performed relatively poorly during the quarter (down 0.25%),
with Singapore (down 8%) the weakest performer in EAFE for the quarter. The
Singapore market, which includes a number of large companies with exposure to
property development, was hurt by the implementation of surprisingly severe
government regulations to curb residential property speculation. Hong Kong was
also volatile in response to fluctuations in U.S. interest rates. Property
prices in Hong Kong rebounded in June, after several months in a slump, thereby
helping property stocks and the market overall. In Malaysia, following strong
performance during the first four months of 1996 (+20.2%) due to surging foreign
investment and corporate earnings growth, the market fell 4.1% during May on
profit-taking, rising interest rates and political discord in the ruling
political party. The market recovered a bit in June to end the first half of the
year up 16.3%, the strongest performer in developed Asia year-to-date. The
government's fiscal and monetary tightening policies have finally begun to show
signs of slowing down the economy, although inflation remains a risk. We have
increased our exposure to Australia as the market there is prime for a recovery.
GDP growth is strong and should trickle through to corporate earnings,
especially if U.S. interest rates do not spike.
 
Following consolidation in May, the Japanese market improved in June as the
Nikkei closed the quarter at the highest levels since 1992. The MSCI Japan index
was up 3.5% in yen terms, but only 0.8% in U.S. dollar terms due to continued
depreciation of the yen. The weak yen is greatly benefiting Japan's recovery,
boosting both corporate profits and GDP. In addition, indications from the Bank
of Japan that interest rates will remain at current low levels to help the
recovery become "self sustaining" has also helped the market. Domestic sentiment
appears to be improving, and we expect to see increased domestic investment as
underfunded public and private pension funds increase their allocation to the
equity market in search of higher returns. As long as the yen and interest rates
remain at or near current levels, the outlook for the Japanese economy and the
Japanese market is promising. Despite recent volatility in U.S. technology
stocks, we continue to be positioned in the Japanese electronics sector, as
valuations are very attractive, fundamentals solid, and the probability for
upside earnings surprises is good. We also have purchased some cyclical stocks
including chemicals and own several real estate-related companies as Japan
continues to build due to increased demand for prime commercial real estate,
ramifications of the Kobe earthquake, and government spending on infrastructure
projects.
 
The lofty valuations of the U.S. markets combined with the threat of rising
domestic interest rates have increased the risk of a correction in the U.S.
markets. If the U.S. markets were to decline quickly and sharply, we would
expect to see major repercussions and increased volatility around the world. On
the
 
- --------------------------------------------------------------------------------
                                                  International Magnum Portfolio
 
                                       53
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
 
OVERVIEW
- --------------------------------------------------------------------------------
THE INTERNATIONAL MAGNUM PORTFOLIO (CONT.)
other hand, a slow, steady decline would enable the international markets to
decouple from the U.S. markets. Nonetheless, we believe that any reaction in the
international markets would likely be temporary, as many other countries are
currently experiencing a combination of economic expansion, declining interest
rates and depreciating currencies, which combined create a favorable environment
for stock market performance. Under these circumstances, we would expect to see
a rotation from the U.S. market to the international markets. Our target
regional allocation currently stands at 42% Europe, 40% Japan and 18% Asia.
 
Francine J. Bovich
PORTFOLIO MANAGER
July 1996
 
- --------------------------------------------------------------------------------
International Magnum Portfolio
 
                                       54
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
STATEMENT OF NET ASSETS (UNAUDITED)
JUNE 30, 1996
- --------------------------------------------------------------------------------
 
THE INTERNATIONAL MAGNUM PORTFOLIO
 
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>
                                                                    VALUE
   SHARES                                                           (000)
- ------------------------------------------------------------
<C>           <S>                                                 <C>
COMMON STOCKS (90.4%)
  AUSTRALIA (2.9%)
      30,812  Broken Hill Proprietary Co., Ltd..................  $      425
      23,800  Lend Lease Corp., Ltd.............................         365
      44,490  National Australia Bank Ltd.......................         411
      33,200  News Corp., Ltd...................................         188
      60,660  Western Mining Corp. Holdings Ltd.................         434
                                                                  ----------
                                                                       1,823
                                                                  ----------
  AUSTRIA (0.5%)
       4,400  Boehler-Uddeholm AG...............................         341
                                                                  ----------
  BELGIUM (0.9%)
    (a)2,980  Arbed S.A.........................................         341
       2,260  Delhaize Freres et Cie, 'Le Lion' S.A.............         113
       2,420  G.I.B. Holdings Ltd. NPV..........................         109
         480  G.I.B. Holdings Ltd. VVPR (New)...................          22
                                                                  ----------
                                                                         585
                                                                  ----------
  DENMARK (0.6%)
       1,200  Jyske Bank A/S (Registered).......................          76
       6,700  Unidanmark A/S, Class A (Registered)..............         311
                                                                  ----------
                                                                         387
                                                                  ----------
  FINLAND (1.4%)
      18,000  Amer-Yhtymae Oy, Class A..........................         303
       8,880  Huhtamaki Oy, Series 1............................         298
       7,390  Nokia AB Oy, Series A.............................         273
                                                                  ----------
                                                                         874
                                                                  ----------
  FRANCE (5.0%)
      11,000  Banque Nationale de Paris.........................         387
         667  Bongrain S.A......................................         323
       2,550  Cie de Saint Gobain...............................         342
       6,140  Elf Aquitaine S.A.................................         452
       2,300  Eridania Beghin-Say S.A...........................         361
    (a)5,980  Legris Industries S.A.............................         275
       3,120  Peugeot S.A.......................................         418
      10,090  Thomson CSF.......................................         284
       4,370  Total S.A., Class B...............................         325
                                                                  ----------
                                                                       3,167
                                                                  ----------
  GERMANY (3.6%)
       1,730  BASF AG...........................................         494
      12,000  Bayer AG..........................................         423
       1,040  Gerresheimer Glas AG..............................         222
         690  Karstadt AG.......................................         275
         650  Mannesmann AG.....................................         224
       4,710  Veba AG...........................................         251
       1,130  Volkswagen AG.....................................         421
                                                                  ----------
                                                                       2,310
                                                                  ----------
  HONG KONG (6.8%)
    (a)5,000  Asia Satellite Telecommunications Holdings Ltd....          15
     113,000  Cheung Kong Holdings Ltd..........................         814
      22,000  China Light & Power Co., Ltd......................         100
      28,000  Citic Pacific Ltd.................................         113
      25,000  Hang Seng Bank Ltd................................         252
 
<CAPTION>
                                                                    VALUE
   SHARES                                                           (000)
- ------------------------------------------------------------
<C>           <S>                                                 <C>
      15,000  Henderson Land Development Co., Ltd...............  $      112
      22,000  Hong Kong Electric Holdings Ltd...................          67
      36,400  Hong Kong & Shanghai Bank Holdings plc............         550
     190,800  Hong Kong Telecommunications Ltd..................         343
     116,000  Hutchison Whampoa Ltd.............................         730
      58,000  New World Development Co., Ltd....................         269
      48,000  Sun Hung Kai Properties Ltd.......................         485
      41,000  Swire Pacific Ltd., Class A.......................         351
      38,000  Wharf Holdings Ltd................................         136
                                                                  ----------
                                                                       4,337
                                                                  ----------
  ITALY (3.0%)
   (a)92,900  Editoriale L'Expresso S.p.A.......................         260
  (a)280,200  Impregilo S.p.A...................................         298
  (a)533,500  Olivetti..........................................         288
     105,000  Stet Di Risp (NCS)................................         276
     300,000  Telecom Italia S.p.A. Di Risp (NCS)...............         518
   (a)34,100  Unicem S.p.A......................................         250
                                                                  ----------
                                                                       1,890
                                                                  ----------
  JAPAN (38.3%)
      44,000  Amada Co., Ltd....................................         475
      25,000  Asahi Tec Corp....................................         181
      26,000  Canon, Inc........................................         542
      17,000  Daibiru Corp......................................         227
      71,000  Daicel Chemical Industry Ltd......................         438
      21,000  Daifuku Co., Ltd..................................         323
      41,000  Daikin Industries Ltd.............................         450
      26,000  Dai Nippon Printing Co., Ltd......................         504
      45,000  Daiwa Securities Co., Ltd.........................         580
      12,200  FamilyMart........................................         544
      20,000  Fuji Machine Manufacturing Co.....................         565
      15,000  Fuji Photo Film Ltd...............................         475
      12,000  Hitachi Credit Corp...............................         213
      82,000  Hitachi Ltd.......................................         765
      45,000  Inabata & Co......................................         340
      33,000  Kaneka Corp.......................................         222
      17,000  Kurita Water Industries...........................         415
       8,000  Kyocera Ltd.......................................         567
      29,000  Kyudenko Co., Ltd.................................         390
      24,000  Matsushita Communication Industries...............         626
      42,000  Matsushita Electric Industries Ltd................         784
     112,000  Mitsubishi Chemical Corp..........................         518
      42,000  Mitsubishi Estate Co., Ltd........................         580
      78,000  Mitsubishi Heavy Industries Ltd...................         680
      24,000  Mitsumi Electric Co., Ltd.........................         382
      13,000  Murata Manufacturing Co., Ltd.....................         493
      70,000  NEC Corp..........................................         762
      28,000  Nifco, Inc........................................         361
       6,000  Nintendo Corp., Ltd...............................         448
      24,000  Nippon Pillar Packing.............................         270
          75  Nippon Telegraph & Telephone Corp.................         557
      53,000  Nissan Motor Co...................................         472
      31,000  Nomura Securities Co..............................         607
      55,000  Obayashi Corp.....................................         499
      21,000  Okura Industrial Co., Ltd.........................         151
      45,000  Ricoh Co., Ltd....................................         477
</TABLE>
 
The accompanying notes are an integral part of the financial statements. (Pages
                                    182-188)
- --------------------------------------------------------------------------------
                                                  International Magnum Portfolio
 
                                       55
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
STATEMENT OF NET ASSETS (UNAUDITED)
JUNE 30, 1996
- --------------------------------------------------------------------------------
 
THE INTERNATIONAL MAGNUM PORTFOLIO (CONT.)
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>
                                                                    VALUE
   SHARES                                                           (000)
- ------------------------------------------------------------
<C>           <S>                                                 <C>
</TABLE>
 
  JAPAN (CONT.)
<TABLE>
<C>           <S>                                                 <C>
       8,000  Sangetsu Co., Ltd.................................  $      215
      19,000  Sankyo Co., Ltd...................................         494
      43,000  Sanwa Shutter.....................................         405
       7,000  Secom Co., Ltd....................................         464
      34,000  Sekisui Chemical Co...............................         417
      13,600  Sony Corp.........................................         897
       6,700  Square Company Ltd................................         394
      31,000  Stanley Electric Co...............................         216
      46,000  Sumitomo Marine & Fire Insurance Co...............         402
      36,000  Suzuki Motor Co., Ltd.............................         474
      70,000  Taisei Corp., Ltd.................................         498
       9,000  TDK Corp..........................................         539
      15,000  Tokyo Electron Ltd................................         438
      89,000  Toshiba Corp......................................         635
      67,000  Tsubakimoto Chain.................................         458
      20,000  Yamanouchi Pharmaceutical Co......................         435
                                                                  ----------
                                                                      24,264
                                                                  ----------
  MALAYSIA (2.7%)
       2,600  AMMB Holdings Bhd.................................          36
      30,000  Genting Bhd.......................................         235
      23,000  IOI Corp. Bhd.....................................          32
      11,000  Leader Universal Holdings Bhd.....................          31
      11,000  Magnum Corp. Bhd..................................          19
      28,000  Malayan Banking Bhd...............................         269
      23,000  Malaysian International Shipping Bhd (Foreign)....          71
      39,000  Petronas Gas Bhd..................................         167
      13,000  Public Bank Bhd (Foreign).........................          36
      45,000  Renong Bhd........................................          72
      24,000  Resorts World Bhd.................................         138
      13,000  Sime Darby Bhd....................................          36
      21,000  TA Enterprise Bhd.................................          33
      27,000  Telekom Malaysia Bhd..............................         240
      44,000  Tenaga Nasional Bhd...............................         185
   (a)10,000  United Engineers Ltd. (Malaysia)..................          70
                                                                  ----------
                                                                       1,670
                                                                  ----------
  NETHERLANDS (5.0%)
       9,150  ABN Amro Holdings N.V.............................         492
       3,060  Akzo Nobel N.V....................................         367
         800  DSM N.V...........................................          80
       1,512  Hollandsche Benton Groep N.V......................         290
      14,750  ING Groep N.V.....................................         440
       4,875  Konin Nijverdal -- Ten Carte N.V..................         226
       9,140  Koninklijke PTT Nederland N.V.....................         346
       9,720  Koninklijke Van Ommeren N.V.......................         383
      16,660  Philips Electronics N.V...........................         542
                                                                  ----------
                                                                       3,166
                                                                  ----------
  NORWAY (0.9%)
      94,700  Den Norske Bank A/S...............................         288
      18,100  Saga Petroleum A/S, Class B.......................         246
                                                                  ----------
                                                                         534
                                                                  ----------
<CAPTION>
                                                                    VALUE
   SHARES                                                           (000)
- ------------------------------------------------------------
<C>           <S>                                                 <C>
 
  SINGAPORE (2.0%)
      29,000  DBS Land Ltd......................................  $       99
      11,000  Development Bank of Singapore Ltd. (Foreign)......         137
       3,000  Fraser & Neave Ltd................................          31
      16,000  Keppel Corp., Ltd.................................         134
      17,000  Oversea-Chinese Banking Corp. (Foreign)...........         199
       4,000  Singapore Airlines Ltd. (Foreign).................          42
       3,000  Singapore Press Holdings (Foreign)................          59
      82,000  Singapore Technologies Industrial Corp............         217
      31,000  Straits Steamship Land Ltd........................         104
      22,000  United Overseas Bank Ltd. (Foreign)...............         210
      27,000  Wing Tai Holdings Ltd.............................          57
                                                                  ----------
                                                                       1,289
                                                                  ----------
  SPAIN (3.2%)
   (a)13,460  Asturiana de Zinc S.A.............................         101
   (a)57,000  Grupo Duro Felguera S.A...........................         246
      35,000  Iberdrola S.A.....................................         360
       7,800  Repsol S.A........................................         272
      29,000  Sevillana de Electricidad S.A.....................         268
      27,400  Telefonica de Espana S.A..........................         506
      31,200  Uralita S.A.......................................         293
                                                                  ----------
                                                                       2,046
                                                                  ----------
  SWEDEN (1.8%)
       2,370  Electrolux AB, Series B...........................         119
      14,390  Nordbanken AS.....................................         278
       8,300  Skandia Forsakrings AB............................         220
      14,670  S.K.F. AB, Class B................................         349
      12,800  Sparbanken Sverige AB, Class A....................         166
                                                                  ----------
                                                                       1,132
                                                                  ----------
  SWITZERLAND (5.8%)
         370  Ascom Holdings AG (Bearer)........................         373
         200  Bobst AG (Bearer).................................         289
         330  Ciba-Geigy AG (Registered)........................         403
         870  Forbo Holding AG (Registered).....................         369
         450  Hero AG (Bearer)..................................         198
         400  Holderbank Financiere Glaris AG (Bearer)..........         320
         380  Magazine Globus (Participating Certificates)......         222
          95  Magazine Globus (Registered)......................          58
         480  Nestle S.A. (Registered)..........................         549
    (a)2,390  Oerlikon-Buehrle Holding AG (Registered)..........         249
         290  Schweizerische Industrie-Gesellschaft Holdings
                (Registered)....................................         336
         450  Sulzer AG (Registered)............................         290
                                                                  ----------
                                                                       3,656
                                                                  ----------
  UNITED KINGDOM (6.0%)
      27,200  Associated British Foods plc......................         164
      16,900  Bass plc..........................................         212
      75,000  BAT Industries plc................................         584
      35,000  Calor Group plc...................................         132
</TABLE>
 
The accompanying notes are an integral part of the financial statements. (Pages
                                    182-188)
- --------------------------------------------------------------------------------
International Magnum Portfolio
 
                                       56
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
STATEMENT OF NET ASSETS (UNAUDITED)
JUNE 30, 1996
- --------------------------------------------------------------------------------
 
THE INTERNATIONAL MAGNUM PORTFOLIO (CONT.)
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>
                                                                    VALUE
   SHARES                                                           (000)
- ------------------------------------------------------------
<C>           <S>                                                 <C>
</TABLE>
 
  UNITED KINGDOM (CONT.)
<TABLE>
<C>           <S>                                                 <C>
     117,500  Christian Salvesen plc............................  $      470
      60,000  Courtaulds Textiles plc...........................         337
      95,800  John Mowlem & Co. plc.............................         134
      28,100  Kwik Save Group plc...............................         198
   (a)18,700  Railtrack Group plc, PP...........................          63
      40,037  Reckitt & Colman plc..............................         420
      28,200  Royal Insurance Holdings plc......................         174
      43,000  Tate & Lyle plc...................................         306
      31,700  Unilever plc......................................         630
                                                                  ----------
                                                                       3,824
                                                                  ----------
TOTAL COMMON STOCKS (Cost $56,421)..............................      57,295
                                                                  ----------
PREFERRED STOCKS (1.2%)
  GERMANY (1.2%)
       1,060  Dyckerhoff AG.....................................         278
       2,570  Hornbach Holding AG...............................         221
       8,200  RWE AG............................................         252
                                                                  ----------
TOTAL PREFERRED STOCKS (Cost $679)..............................         751
                                                                  ----------
<CAPTION>
   NO. OF
   RIGHTS
- ------------
<C>           <S>                                                 <C>
RIGHTS (0.0%)
  SINGAPORE (0.0%)
    (a)1,700  Oversea-Chinese Banking Corp., expiring 7/12/96
                (Cost $0).......................................          14
                                                                  ----------
TOTAL FOREIGN SECURITIES (91.6%) (Cost $57,100).................      58,060
                                                                  ----------
<CAPTION>
FACE AMOUNT
   (000)
- ------------
<C>           <S>                                                 <C>
SHORT-TERM INVESTMENT (9.4%)
  REPURCHASE AGREEMENT (9.4%)
$      5,925  Chase Securities, Inc. 5.15%, dated 6/28/96, due
                7/01/96, to be repurchased at $5,928,
                collateralized by $5,825 U.S. Treasury Notes,
                7.125%, due 9/30/99, valued at $5,955 (Cost
                $5,925).........................................       5,925
                                                                  ----------
FOREIGN CURRENCY (0.4%)
   DEM     5  Deutsche Mark.....................................           3
  FIM    247  Finnish Markka....................................          53
   HKD    31  Hong Kong Dollar..................................           4
  ITL     30  Italian Lira......................................          --
  JPY     72  Japanese Yen......................................           1
   MYR   122  Malaysian Ringgit.................................          49
   NOK   161  Norwegian Krone...................................          25
   SGD    65  Singapore Dollar..................................          46
  ESP  7,276  Spanish Peseta....................................          57
   CHF     3  Swiss Franc.......................................           2
                                                                  ----------
TOTAL FOREIGN CURRENCY (Cost $240)..............................         240
                                                                  ----------
</TABLE>
 
<TABLE>
<CAPTION>
                                                                  VALUE
                                                                  (000)
- -----------
<S>                                                 <C>         <C>
TOTAL INVESTMENTS (101.4%) (Cost $63,265).....................     $64,225
                                                                ----------
OTHER ASSETS (0.9%)
  Cash............................................  $        1
  Net Unrealized Gain on Forward Foreign Currency
   Exchange Contracts.............................         241
  Receivable for Investments Sold.................         199
  Dividends Receivable............................          57
  Receivable due from Investment Adviser..........          18
  Foreign Withholding Tax Reclaim Receivable......          14
  Interest Receivable.............................           3
  Other...........................................          80         613
                                                    ----------
LIABILITIES (-2.3%)
  Payable for Investments Purchased...............      (1,398)
  Custodian Fees Payable..........................         (28)
  Administrative Fees Payable.....................          (8)
  Distribution Fees Payable.......................          (1)
  Other Liabilities...............................         (35)     (1,470)
                                                    ----------  ----------
NET ASSETS (100%).............................................     $63,368
                                                                ----------
                                                                ----------
NET ASSETS CONSIST OF:
Paid in Capital...............................................  $   62,032
Undistributed Net Investment Income...........................         151
Accumulated Net Realized Loss.................................         (15)
Unrealized Appreciation on Investments and Foreign Currency
  Translations................................................       1,200
                                                                ----------
NET ASSETS....................................................  $   63,368
                                                                ----------
                                                                ----------
CLASS A:
NET ASSETS....................................................     $61,738
NET ASSET VALUE, OFFERING AND REDEMPTION
  PRICE PER SHARE
  Applicable to 5,916,237 outstanding $0.001 par value shares
  (authorized 500,000,000 shares).............................      $10.44
                                                                ----------
                                                                ----------
CLASS B:
NET ASSETS....................................................      $1,630
NET ASSET VALUE, OFFERING AND REDEMPTION
  PRICE PER SHARE
  Applicable to 156,421 outstanding $0.001 par value shares
  (authorized 500,000,000 shares).............................      $10.42
                                                                ----------
                                                                ----------
</TABLE>
 
The accompanying notes are an integral part of the financial statements. (Pages
                                    182-188)
- --------------------------------------------------------------------------------
                                                  International Magnum Portfolio
 
                                       57
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
STATEMENT OF NET ASSETS (UNAUDITED)
JUNE 30, 1996
- --------------------------------------------------------------------------------
 
THE INTERNATIONAL MAGNUM PORTFOLIO (CONT.)
- --------------------------------------------------------------------------------
<TABLE>
<S>                                                 <C>         <C>
FORWARD FOREIGN CURRENCY EXCHANGE CONTRACT INFORMATION:
  Under the terms of forward foreign currency exchange contracts open at
  June 30, 1996, the Portfolio is obligated to deliver or is to receive
  foreign currency in exchange for U.S. dollars as indicated below:
</TABLE>
 
- ------------------------------------------------------------
 
<TABLE>
<CAPTION>
                                           IN                        NET
  CURRENCY                              EXCHANGE                 UNREALIZED
 TO DELIVER      VALUE    SETTLEMENT       FOR        VALUE      GAIN (LOSS)
    (000)        (000)       DATE         (000)       (000)         (000)
- -------------  ---------  -----------  -----------  ---------  ---------------
<S>            <C>        <C>          <C>          <C>        <C>
U.S.$      9   $       9     7/02/96   ITL  13,665  $       9     $      --
BEF  16,574          530     7/12/96   U.S.$525           525            (5)
CHF    626           501     7/12/96   U.S.$510           510             9
DEM    705           464     7/12/96   U.S.$465           465            (1)
FRF   2,058          401     7/12/96   U.S.$400           400             1
JPY  270,628       2,480     7/12/96   U.S.$2,530       2,530            50
NLG    710           417     7/12/96   U.S.$420           420             3
DEM    398           262     7/15/96   U.S.$261           261            (1)
DEM  2,922         1,922     7/16/96   U.S.$1,898       1,898           (24)
CHF   3,599        2,886     7/31/96   U.S.$2,860       2,860           (26)
NLG   4,292        2,518     7/31/96   U.S.$2,499       2,499           (19)
FRF  11,518        2,242     8/14/96   U.S.$2,217       2,217           (25)
JPY  951,570       8,704     8/14/96   U.S.$8,923       8,923           219
JPY  489,836       4,540     9/27/96   U.S.$4,600       4,600            60
               ---------                            ---------         -----
               $  27,876                            $  28,117     $     241
               ---------                            ---------         -----
               ---------                            ---------         -----
</TABLE>
 
- ------------------------------------------------------------
 
(a)      --   Non-income producing security
NCS      --   Non Convertible Shares
PP       --   Partially Paid
BEF      --   Belgian Franc
FRF      --   French Franc
NLG      --   Netherlands Guilder
 
- ------------------------------------------------------------
 
            SUMMARY OF FOREIGN SECURITIES BY INDUSTRY CLASSIFICATION
 
<TABLE>
<CAPTION>
                                           VALUE     PERCENT OF
INDUSTRY                                   (000)     NET ASSETS
<S>                                      <C>        <C>
- -----------------------------------------------------------------
Capital Equipment......................  $  18,597         29.3%
Consumer Goods.........................     11,555         18.2
Energy.................................      2,882          4.5
Finance................................      9,775         15.4
Gold Mines.............................        101          0.2
Materials..............................      6,134          9.7
Multi-Industry.........................      1,365          2.2
Services...............................      7,651         12.1
                                         ---------          ---
                                         $  58,060         91.6%
                                         ---------          ---
                                         ---------          ---
</TABLE>
 
The accompanying notes are an integral part of the financial statements. (Pages
                                    182-188)
- --------------------------------------------------------------------------------
International Magnum Portfolio
 
                                       58
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
 
OVERVIEW
- --------------------------------------------------------------------------------
 
THE INTERNATIONAL SMALL CAP PORTFOLIO
 
COMPOSITION OF NET ASSETS (AT JUNE 30, 1996)
 
EDGAR REPRESENTATION OF DATA POINTS USED IN PRINTED GRAPHIC
 
<TABLE>
<S>               <C>
Australia              9.1%
Denmark                1.4%
Finland                4.3%
France                10.7%
Germany                9.5%
Hong Kong              2.3%
Ireland                2.4%
Italy                  3.9%
Japan                 13.5%
Netherlands            7.8%
New Zealand            0.9%
Norway                 1.5%
Spain                  3.7%
Sweden                 1.0%
Switzerland           10.2%
United Kingdom        15.7%
Other                  2.1%
</TABLE>
 
PERFORMANCE COMPARED TO THE MORGAN STANLEY
CAPITAL INTERNATIONAL (MSCI) EAFE INDEX(1)
- -----------------------------------------
 
<TABLE>
<CAPTION>
                                       TOTAL RETURNS(2)
                          -------------------------------------------
                                                     AVERAGE ANNUAL
                             YTD        ONE YEAR     SINCE INCEPTION
                          ----------  ------------  -----------------
<S>                       <C>         <C>           <C>
PORTFOLIO...............      15.66%       16.31%          18.63%
INDEX...................       4.52        13.28           15.33
 
<FN>
 
1. The MSCI EAFE Index is an unmanaged index of common stocks and includes
   Europe, Australia and the Far East (assumes dividends reinvested net of
   withholding taxes).
 
2. Total returns for the Portfolio reflect expenses waived and reimbursed, if
   applicable, by the Adviser. Without such waiver and reimbursement, total
   returns would be lower.
</TABLE>
 
PAST PERFORMANCE IS NOT PREDICTIVE OF FUTURE PERFORMANCE.
 
- ------------------------------------------------
 
THE COUNTRY SPECIFIC PERFORMANCE RESULTS PROVIDED ARE AS MEASURED BY THE MSCI
EAFE INDEX AND ARE FOR INFOMATIONAL PURPOSES ONLY AND SHOULD NOT BE CONSTRUED AS
A GUARANTEE OF THE PORTFOLIO'S FUTURE PERFORMANCE. PAST PERFORMANCE SHOWN IS NOT
PREDICTIVE OF FUTURE PERFORMANCE. INVESTMENT RETURN AND PRINCIPAL VALUE WILL
FLUCTUATE SO THAT AN INVESTOR'S SHARES, WHEN REDEEMED, MAY BE WORTH MORE OR LESS
THAN THEIR ORIGINAL COST. PLEASE SEE THE PROSPECTUS FOR A DESCRIPTION OF CERTAIN
RISK CONSIDERATIONS ASSOCIATED WITH INTERNATIONAL INVESTING.
 
The International Small Cap Portfolio seeks long-term capital appreciation by
investing primarily in the equity securities of non-U.S. issuers. The Portfolio
applies a disciplined bottom-up value approach to identify and invest in small
capitalization companies which are both attractive businesses and available at
cheap prices. A market capitalization cut-off of U.S. $1 billion is used as our
definition of "small."
 
For the six month period ended June 30, 1996, the Portfolio had a total return
of 15.66%, as compared to a total return of 4.52% for the Morgan Stanley Capital
International (MSCI) EAFE Index. The average annual total return for the twelve
months ended June 30, 1996 and for the period from inception on December 15,
1992 through June 30, 1996 was 16.31% and 18.63%, respectively, as compared to
13.28% and 15.33%, respectively, for the Index.
 
The Portfolio's significant outperformance during the first six months of the
year reflected a strong recovery in the relative performance of small caps
versus large caps together with the Portfolio's underweighting of the relatively
weak Japanese market and currency. Stock selection proved particularly strong in
Japan, the U.K., France, Germany, Finland and Australia. Although the major
European currencies were weak relative to the U.S. dollar, the Portfolio's
hedges alleviated the pain while the strong Australian dollar contributed
positively to performance.
 
Given the very strong performances of a number of the Portfolio's holdings over
the first half, portfolio activity was high. Turnover in the first six months
reached 16.8%. Profits were top sliced in the U.K., Switzerland, Germany,
Finland and Australia and proceeds from these sales were invested in building a
number of positions in Germany, Spain, Sweden, Norway and Finland. The most
recent additions to the Portfolio have been Ricardo (U.K.) and Europeenne
d'Extincteurs (France).
 
Tamro is the leading pharmaceutical wholesaler in Finland, Sweden, and the
Baltic states with dominant market positions and high rates of organic growth.
Acquired on 9x cash flow and 11x free cash flow this valuation does not fully
reflect the strength of its franchise, or its growth prospects.
 
Ricardo is a global automotive consulting company providing highly valued
engineering services to virtually all the world's major car companies. On 7x
cash flow and a yield of 6.2%, the stock represents attractive value.
 
Europeenne d'Extincteurs is France's second largest manufacturer and distributor
of fire extinguishers and
 
- --------------------------------------------------------------------------------
                                               International Small Cap Portfolio
 
                                       59
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
 
OVERVIEW
- --------------------------------------------------------------------------------
THE INTERNATIONAL SMALL CAP PORTFOLIO (CONT.)
is also the market leader in Italy and Portugal. Purchased on 12x earnings and
11x free cash flow these valuations do not reflect the high level of recurrent
income nor a number of initiatives which are likely to drive strong growth.
 
Looking forward we do not anticipate any major change in the Portfolio's
geographic mix. The more cautious tone to the markets in recent weeks has
reflected patchy economic news and, in particular, a focus on the next likely
move in interest rates. In Japan corporate results were mixed and accompanied by
generally cautious comments although a surprisingly strong GNP number suggests
private capital expenditure and consumption are recovering. We remain cautious
on the speed and magnitude of economic recovery in Japan and certainly believe
that share prices more than discount our own expectations. Signs of bubble-style
market shenanigans do concern us, however, and the risk that the local Japanese
investor becomes increasingly active is worrysome.
 
In Europe weaker currencies, with the exception of the Italian lira, have been
positive for the export sector but high unemployment levels have kept
consumption severely depressed in Germany, Switzerland and France. The U.K. and
the Netherlands, in contrast, provide more positive signs of consumer recovery.
The recent actions of the Bank of Japan and Fed to maintain rather than raise
rates are likely to provide a short term reprieve but the spectre of higher
rates in these economies by the end of the year is unlikely to vanish. Our own
perspective remains one of a slow but gradual recovery in Europe and Japan
dampened by structurally high levels of unemployment and poor public sector
finances. We see no real danger of a pick up in inflation in the international
markets outside Japan and corporate profitability in general will continue to be
driven by restructuring rather than top line growth.
 
Despite this cautious outlook we continue to find attractive value in the small
cap sector given the relatively poor coverage of these companies. Increasing
interest in the sector is continuing to drive small cap outperformance but the
sheer number of companies in our universe leaves no shortage of inefficiently
priced, high quality businesses still to be discovered. Given our earlier
comments regarding Japan, we do not anticipate any change in our underweight
position in this market while we continue to find attractive value in
Continental Europe and Australia.
 
Margaret Naylor
PORTFOLIO MANAGER
 
July 1996
 
- --------------------------------------------------------------------------------
International Small Cap Portfolio
 
                                       60
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
STATEMENT OF NET ASSETS (UNAUDITED)
JUNE 30, 1996
- --------------------------------------------------------------------------------
 
THE INTERNATIONAL SMALL CAP PORTFOLIO
 
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>
                                                                      VALUE
    SHARES                                                            (000)
<C>             <S>                                                 <C>
- ------------------------------------------------------------
COMMON STOCKS (92.2%)
  AUSTRALIA (9.1%)
       112,001  Arnotts Ltd.......................................  $      749
       564,678  Auspine Ltd.......................................       1,420
    (a)990,079  Bains Harding Ltd.................................         288
     1,618,844  BRL Hardy Ltd.....................................       2,952
     1,100,000  Burswood Property Trust...........................       1,496
     2,351,732  Country Road Ltd..................................       3,068
     2,576,334  E.R.G. Ltd........................................       3,381
    (a)763,000  E.R.G. Ltd. (New).................................       1,001
       318,100  Morgan & Banks Ltd................................         888
     5,862,355  Parbury Ltd.......................................       2,534
        70,132  Rothmans Holdings Ltd.............................         391
     1,721,500  Solution 6 Holdings Ltd...........................       1,935
    (a)546,000  W.D. & H.O. Wills Holdings Ltd....................         966
                                                                    ----------
                                                                        21,069
                                                                    ----------
  DENMARK (1.4%)
       107,000  SYD-Sonderjylland Holdings........................       3,198
                                                                    ----------
  FINLAND (4.3%)
        16,300  Aamulehti Yhtymae Oy, Series II...................         440
       125,000  Amer-Yhtymae Oy, Class A..........................       2,106
       106,810  Hartwall Oy, Class A..............................       2,619
     (a)71,850  KCI Konecranes International......................       1,770
        11,400  Kone Oy, Class B..................................       1,273
       308,900  OY Tamro AB.......................................       1,855
                                                                    ----------
                                                                        10,063
                                                                    ----------
  FRANCE (10.7%)
        72,000  Dauphin O.T.A.....................................       4,203
     (a)67,650  De Dietrich et Compagnie S.A......................       3,423
        31,150  Europeenne de Propulsion S.A......................       3,607
     (a)49,200  Europeenne d'Extincteurs..........................       2,489
         8,100  Galeries Lafayette................................       2,768
         6,296  Labinal S.A.......................................         921
     (a)79,434  Legris Industries S.A.............................       3,648
        91,756  Sediver S.A.......................................       3,749
                                                                    ----------
                                                                        24,808
                                                                    ----------
  GERMANY (4.4%)
      (a)8,900  Duerr Beteiligungs AG.............................       3,367
           440  Gerresheimer Glas AG..............................          94
        10,688  Sinn AG...........................................       1,758
     (a)20,000  Varta AG..........................................       4,290
         2,210  Vossloh AG........................................         776
                                                                    ----------
                                                                        10,285
                                                                    ----------
  HONG KONG (2.3%)
     1,282,000  Chen Hsong Holdings...............................         687
     1,097,000  Jardine International Motor Holdings Ltd..........       1,346
     5,200,000  Pico Far East Holdings Ltd........................       1,209
     5,862,000  Vitasoy International Holdings Ltd................       2,140
                                                                    ----------
                                                                         5,382
                                                                    ----------
 
<CAPTION>
                                                                      VALUE
    SHARES                                                            (000)
<C>             <S>                                                 <C>
- ------------------------------------------------------------
 
  IRELAND (2.4%)
     1,070,000  Avonmore Foods plc, Class A.......................  $    2,906
       692,472  Green Property plc................................       2,544
                                                                    ----------
                                                                         5,450
                                                                    ----------
  ITALY (3.3%)
  (a)1,172,800  Editoriale L'Expresso S.p.A.......................       3,275
       506,000  Sogefi S.p.A......................................       1,051
       787,000  Unicem Di Risp (NCS)..............................       2,565
        81,000  Vincenzo Zucchi S.p.A.............................         386
       212,500  Vincenzo Zucchi S.p.A. (NCS)......................         486
                                                                    ----------
                                                                         7,763
                                                                    ----------
  JAPAN (13.5%)
        15,000  Exedy Corp........................................         277
       231,000  Foster Electric Co., Ltd..........................       1,376
       337,000  Hankyu Realty.....................................       3,607
       742,350  Japan Oil Transportation..........................       4,482
       213,000  Japan Vilene Co., Ltd.............................       1,461
       134,000  Kansei Corp.......................................       1,250
       328,000  Kirin Beverage Corp...............................       4,830
       136,400  Nifco, Inc........................................       1,759
       425,000  Nissan Fire & Insurance Co........................       3,087
        45,000  Sangetsu Co., Ltd.................................       1,206
       549,000  Toc Co............................................       6,528
       170,000  Toyoda Gosei Co...................................       1,547
                                                                    ----------
                                                                        31,410
                                                                    ----------
  NETHERLANDS (7.8%)
        64,530  Ahrend Groep N.V..................................       2,896
        41,900  Apothekers Cooperatie OPG C.V.....................       1,123
        27,916  Hollandsche Beton Groep N.V.......................       5,356
        28,885  Industriemij Welna N.V............................         744
       141,000  Koninklijke Van Ommeren N.V.......................       5,559
        37,125  Konin Nijverdal -- Ten Carte N.V..................       1,718
         8,802  Polynorm N.V......................................         775
                                                                    ----------
                                                                        18,171
                                                                    ----------
  NEW ZEALAND (0.9%)
       659,729  Fisher & Paykel Industries Ltd....................       2,124
                                                                    ----------
  NORWAY (1.5%)
        73,850  Adelsten, Class B.................................       1,013
        65,450  Kverneland AS.....................................       1,614
    (a)228,020  Oceanor...........................................         809
                                                                    ----------
                                                                         3,436
                                                                    ----------
  SPAIN (3.7%)
    (a)101,258  Asturiana del Zinc S.A............................         759
        80,000  Bodegas y Bebidas S.A.............................       1,942
        47,750  Empressa Nacional Hidroelectrica del Ribagorzana
                  S.A., Class B...................................         997
        87,250  Gas y Electricidad S.A............................       4,843
                                                                    ----------
                                                                         8,541
                                                                    ----------
  SWEDEN (1.0%)
        94,000  Marieberg Tidnings AB.............................       2,359
                                                                    ----------
</TABLE>
 
The accompanying notes are an integral part of the financial statements. (Pages
                                    182-188)
 
- --------------------------------------------------------------------------------
                                               International Small Cap Portfolio
 
                                       61
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
STATEMENT OF NET ASSETS (UNAUDITED)
JUNE 30, 1996
- --------------------------------------------------------------------------------
 
THE INTERNATIONAL SMALL CAP PORTFOLIO (CONT.)
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>
                                                                      VALUE
    SHARES                                                            (000)
- ------------------------------------------------------------
<C>             <S>                                                 <C>
  SWITZERLAND (10.2%)
         1,940  Bobst AG (Bearer).................................  $    2,802
         4,965  Bucher Holdings AG (Bearer).......................       3,874
         9,800  Edipresse S.A. (Bearer)...........................       2,353
         3,400  Hero AG (Bearer)..................................       1,497
           530  Kouni Reisen Holdings, Class B (Registered).......       1,217
         2,750  LEM Holdings AG...................................         806
         8,500  Magazine Globus (Participating Certificates)......       4,966
         5,850  Porst Holding AG (Bearer).........................         581
         1,800  Schweizerische Industrie-Gesellschaft Holdings
                  (Registered)....................................       2,089
        (a)910  Von Moos Holding AG (Bearer)......................          67
         3,850  Zellweger Luwa AG (Bearer)........................       3,543
                                                                    ----------
                                                                        23,795
                                                                    ----------
  UNITED KINGDOM (15.7%)
     4,000,000  Anglo Irish Bank Corp. plc (British Pound
                  Shares).........................................       4,039
       530,000  Blagden Industries plc............................       1,301
     1,094,900  Bluebird Toys plc.................................       3,963
     1,266,800  BSM Group plc.....................................       3,641
        80,700  Church & Co. plc..................................         602
     1,080,600  Corporate Services Group plc......................       3,038
(a,d)2,540,850  Donelon Tyson plc.................................          --
        63,500  Eurocamp plc......................................         216
     1,025,000  GEI International plc.............................       2,309
       212,000  Hadleigh Industries Group plc.....................         764
    (a)282,000  Hornby Group plc..................................         852
       223,000  International Business Communications (Holdings)
                  plc.............................................       1,088
     1,030,000  John Mowlem & Co. plc.............................       1,440
 (a)35,365,100  Kendell plc.......................................         412
       206,335  Mallett plc.......................................         244
     2,682,000  Matthews (Bernard) plc............................       4,208
        60,200  McBride plc.......................................         121
       569,400  Oriflame International S.A........................       4,467
(a,d)2,659,393  Pentos plc........................................          --
       323,526  Perry Group plc...................................         960
       450,000  Ricardo Group plc.................................         944
  (a)1,895,000  Tandem Group plc..................................         371
       251,400  The 600 Group plc.................................       1,078
       541,700  Waterman Partnership Holdings plc.................         303
                                                                    ----------
                                                                        36,361
                                                                    ----------
TOTAL COMMON STOCKS (Cost $196,648)...............................     214,215
                                                                    ----------
<CAPTION>
                                                                      VALUE
    SHARES                                                            (000)
<C>             <S>                                                 <C>
- ------------------------------------------------------------
PREFERRED STOCKS (5.5%)
  GERMANY (5.1%)
        40,800  Berentzen-Gruppe AG...............................  $    1,694
         9,100  Dyckerhoff AG.....................................       2,383
        32,400  Hornbach Holding AG...............................       2,792
        10,550  Spar Handels AG...................................       2,943
        10,900  Wuerttembergische Metallwarenfabrik AG............       1,972
                                                                    ----------
                                                                        11,784
                                                                    ----------
  ITALY (0.4%)
       237,250  Unipol S.p.A......................................       1,026
                                                                    ----------
TOTAL PREFERRED STOCKS (Cost $11,279).............................      12,810
                                                                    ----------
<CAPTION>
    NO. OF
    RIGHTS
- --------------
<C>             <S>                                                 <C>
RIGHTS (0.0%)
  IRELAND (0.0%)
  (a,d)230,824  Green Property plc, expiring 7/02/96 (Cost $0)....         111
                                                                    ----------
<CAPTION>
    NO. OF
   WARRANTS
- --------------
<C>             <S>                                                 <C>
WARRANTS (0.0%)
  SWITZERLAND (0.0%)
      (a)4,600  Zellweger Luwa AG, expiring 5/21/97 (Cost $0).....          36
                                                                    ----------
<CAPTION>
     FACE
    AMOUNT
    (000)
- --------------
<C>             <S>                                                 <C>
CONVERTIBLE DEBENTURE (0.2%)
  ITALY (0.2%)
ITL     518,000 Mediobanca S.p.A. 5.50%, 1/01/00
                  (Cost $328).....................................         328
                                                                    ----------
TOTAL FOREIGN SECURITIES (97.9%) (Cost $208,255)..................     227,500
                                                                    ----------
SHORT-TERM INVESTMENT (0.8%)
  REPURCHASE AGREEMENT (0.8%)
$         1,786 Chase Securities, Inc. 5.15%, dated 6/28/96, due
                  7/01/96, to be repurchased at $1,787,
                  collateralized by $1,755 U.S. Treasury Notes,
                  7.125%, 9/30/99, valued at $1,794 (Cost
                  $1,786).........................................       1,786
                                                                    ----------
FOREIGN CURRENCY (1.9%)
GBP       325   British Pound.....................................         506
DKK        43   Danish Krone......................................           7
DEM     5,527   Deutsche Mark.....................................       3,636
FIM          1  Finnish Markka....................................          --
ITL        143  Italian Lira......................................          --
JPY      33,672 Japanese Yen......................................         308
ESP     12,650  Spanish Peseta....................................          99
SEK          1  Swedish Krona.....................................          --
                                                                    ----------
TOTAL FOREIGN CURRENCY (Cost $4,539)..............................       4,556
                                                                    ----------
</TABLE>
 
The accompanying notes are an integral part of the financial statements. (Pages
                                    182-188)
 
- --------------------------------------------------------------------------------
International Small Cap Portfolio
 
                                       62
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
STATEMENT OF NET ASSETS (UNAUDITED)
JUNE 30, 1996
- --------------------------------------------------------------------------------
 
THE INTERNATIONAL SMALL CAP PORTFOLIO (CONT.)
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>
                                                                      VALUE
                                                                      (000)
- ------------------------------------------------------------
<C>             <S>                                                 <C>
TOTAL INVESTMENTS (100.6%) (Cost $214,580)........................    $233,842
                                                                    ----------
</TABLE>
 
<TABLE>
<S>                                                 <C>           <C>
OTHER ASSETS (0.5%)
  Cash............................................  $          1
  Net Unrealized Gain on Forward Foreign Currency
    Exchange Contracts............................           343
  Dividends Receivable............................           307
  Receivable for Investments Sold.................           306
  Foreign Withholding Tax Reclaim Receivable......           184
  Receivable for Portfolio Shares Sold............            18
  Interest Receivable.............................             9
  Other...........................................             9       1,177
                                                    ------------
LIABILITIES (-1.1%)
  Payable for Investments Purchased...............        (1,972)
  Investment Advisory Fees Payable................          (480)
  Custodian Fees Payable..........................           (31)
  Administrative Fees Payable.....................           (30)
  Directors' Fees and Expenses Payable............            (4)
  Other Liabilities...............................           (39)     (2,556)
                                                    ------------  ----------
NET ASSETS (100%)...............................................    $232,463
                                                                  ----------
                                                                  ----------
NET ASSETS CONSIST OF:
Paid in Capital.................................................  $  208,307
Undistributed Net Investment Income.............................       2,209
Accumulated Net Realized Gain...................................       2,345
Unrealized Appreciation on Investments and Foreign Currency
  Translations..................................................      19,602
                                                                  ----------
NET ASSETS......................................................  $  232,463
                                                                  ----------
                                                                  ----------
NET ASSET VALUE, OFFERING AND REDEMPTION
  PRICE PER SHARE
  Applicable to 13,450,988 outstanding $0.001 par value shares
  (authorized 1,000,000,000 shares).............................      $17.28
                                                                  ----------
                                                                  ----------
</TABLE>
 
<TABLE>
<S>                                                 <C>           <C>
- ------------------------------------------------
FORWARD FOREIGN CURRENCY EXCHANGE CONTRACT INFORMATION:
  Under the terms of forward foreign currency exchange contracts open at
  June 30, 1996, the Portfolio is obligated to deliver or is to receive
  foreign currency in exchange for U.S. dollars or foreign currency as
  indicated below:
</TABLE>
 
<TABLE>
<CAPTION>
                                         IN                       NET
CURRENCY TO                           EXCHANGE                UNREALIZED
  DELIVER      VALUE    SETTLEMENT      FOR         VALUE     GAIN (LOSS)
   (000)       (000)       DATE        (000)        (000)        (000)
- -----------  ---------  ----------  ------------  ---------  -------------
<C>          <C>        <C>         <S>           <C>        <C>
DEM   304    $     200     7/01/96  FIM    927    $     200    $      --
NLG     6            3     7/01/96  DEM     5             3           --
DEM 1,119          737     7/02/96  IEP     462         738            1
DEM 3,000        1,983     9/12/96  U.S.$  2,049      2,049           66
FRF 20,000       3,906     9/12/96  U.S.$  3,964      3,964           58
NLG 10,000       5,899     9/12/96  U.S.$  6,105      6,105          206
JPY 798,840      7,418    10/11/96  U.S.$  8,400      8,400          982
U.S.$ 8,400      8,400    10/11/96  JPY 800,100       7,430         (970)
             ---------                            ---------        -----
             $  28,546                            $  28,889    $     343
             ---------                            ---------        -----
             ---------                            ---------        -----
</TABLE>
 
- ------------------------------------------------------------
 
<TABLE>
<S>        <C>        <C>
(a)           --      Non-income producing security
(d)           --      Security valued at fair value -- See note A-1 to
                      financial statements
NCS           --      Non Convertible Shares
FRF           --      French Franc
IEP           --      Irish Punt
NLG           --      Netherland Guilder
</TABLE>
 
- ------------------------------------------------------------
 
            SUMMARY OF FOREIGN SECURITIES BY INDUSTRY CLASSIFICATION
 
<TABLE>
<CAPTION>
                                                       PERCENT
                                            VALUE       OF NET
INDUSTRY                                    (000)       ASSETS
<S>                                       <C>        <C>
- -----------------------------------------------------------------
Capital Equipment.......................  $  46,857        20.2%
Consumer Goods..........................     58,324        25.1
Energy..................................      6,599         2.8
Finance.................................     26,977        11.6
Materials...............................     23,805        10.3
Multi-Industry..........................      6,554         2.8
Services................................     58,384        25.1
                                          ---------         ---
                                          $ 227,500        97.9%
                                          ---------         ---
                                          ---------         ---
</TABLE>
 
The accompanying notes are an integral part of the financial statements. (Pages
                                    182-188)
 
- --------------------------------------------------------------------------------
                                               International Small Cap Portfolio
 
                                       63
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
 
OVERVIEW
- --------------------------------------------------------------------------------
 
THE JAPANESE EQUITY PORTFOLIO
 
COMPOSITION OF NET ASSETS (AT JUNE 30, 1996)
 
EDGAR REPRESENTATION OF DATA POINTS USED IN PRINTED GRAPHIC
 
<TABLE>
<S>                       <C>
Capital Equipment             16.3%
Consumer Goods                16.1%
Electrical & Electronics      16.9%
Finance                        6.4%
Machinery & Engineering       12.7%
Materials                      8.9%
Multi-Industry                 1.6%
Services                       9.6%
Other                         11.5%
</TABLE>
 
PERFORMANCE COMPARED TO THE MORGAN STANLEY
CAPITAL INTERNATIONAL (MSCI) JAPAN INDEX(1)
- -----------------------------------------
 
<TABLE>
<CAPTION>
                                      TOTAL RETURNS(2)
                         ------------------------------------------
                                                    AVERAGE ANNUAL
                            YTD        ONE YEAR    SINCE INCEPTION
                         ----------  ------------  ----------------
<S>                      <C>         <C>           <C>
PORTFOLIO -- CLASS A...       7.77%       24.63%           0.95%
PORTFOLIO -- CLASS
B(3)...................       7.78          N/A             N/A
INDEX..................       1.13        11.08            1.93
 
<FN>
 
1. The MSCI Japan Index is an unmanaged index of common stocks (assumes
   dividends reinvested).
 
2. Total returns for the Portfolio reflect expenses waived and reimbursed, if
   applicable, by the Adviser. Without such waiver and reimbursement, total
   returns would be lower.
 
3. The Portfolio began offering Class B shares on January 2, 1996.
</TABLE>
 
PAST PERFORMANCE IS NOT PREDICTIVE OF FUTURE PERFORMANCE.
 
- ------------------------------------------------------------
 
THE COUNTRY SPECIFIC PERFORMANCE RESULTS PROVIDED ARE AS MEASURED BY THE MSCI
JAPAN INDEX AND ARE FOR INFORMATIONAL PURPOSES ONLY AND SHOULD NOT BE CONSTRUED
AS A GUARANTEE OF THE PORTFOLIO'S FUTURE PERFORMANCE. PAST PERFORMANCE SHOWN IS
NOT PREDICTIVE OF FUTURE PERFORMANCE. INVESTMENT RETURN AND PRINCIPAL VALUE WILL
FLUCTUATE SO THAT AN INVESTOR'S SHARES, WHEN REDEEMED, MAY BE WORTH MORE OR LESS
THAN THEIR ORIGINAL COST. PLEASE SEE THE PROSPECTUS FOR A DESCRIPTION OF CERTAIN
RISK CONSIDERATIONS ASSOCIATED WITH INTERNATIONAL INVESTING.
 
The investment objective of the Japanese Equity Portfolio is to seek long-term
capital appreciation by investing primarily in equity securities of Japanese
issuers. Equity securities are defined as common and preferred stocks, debt
securities convertible into common stock and common stock purchase warrants.
 
For the six month period ended June 30, 1996, the Portfolio had a total return
of 7.77% for the Class A shares and 7.78% for the Class B shares, as compared to
a total return of 1.13% for the Morgan Stanley Capital International (MSCI)
Japan Index. The average annual total return for the twelve months ended June
30, 1996 and for the period from inception on April 25, 1994 through June 30,
1996 was 24.63% and 0.95%, respectively, for the Class A shares, as compared to
11.08% and 1.93%, respectively, for the Index.
 
During the first half of 1996 macro conditions regarding the Japanese economy
showed evidence of a meaningful recovery underway, supported by a weakening yen,
economic stimulus packages and record low interest rates.
 
Interest rate differentials between the U.S. and Japan continued to widen while
the G-7 supported further strength for the dollar stating the "dollar rise is
positive and promising" during the Lyon summit. With comment, it appears
unanimous support for Japan sustaining a solid economic recovery remains a top
priority by G-7.
 
A low interest rate weaker yen environment coupled with a 14 trillion yen
stimulus package announced in September 1995 had a very profound impact on GDP,
corporate profits and business sentiment during the first half of 1996. In fact,
GDP rose to 12.7% annualized for the quarter January to March 1996 (highest on
record for the past 23 years), the BOJ May "Tankan" reported significant
business confidence improvement, while corporate earnings for 1,057 listed
non-financial companies rose 98% year over year on a consolidated basis. With
such robust gains, concerns about monetary policy began to also rise. In
February, finance minister Kubo hinted a possible rate hike to help pensioners;
also BOJ Governor Matsushita commented he was also considering a rate hike "in
the future." While these comments only served to cool financial markets, in
reality there was no change in policy. We believe any interest rate rises in
Japan will be modest. There is no evidence to date that real demand for money
has yet occurred, suggesting further stimulus to the economy is necessary for a
sustainable recovery. Moreover, monetary policy comments by the authorities seem
to
 
- --------------------------------------------------------------------------------
Japanese Equity Portfolio
 
                                       64
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
 
OVERVIEW
- --------------------------------------------------------------------------------
THE JAPANESE EQUITY PORTFOLIO (CONT.)
be timed with overheating markets -- and are more geared to securing a long term
gradual recovery -- than slowing a fragile economy just emerging from 5 straight
years of decline.
 
The solid fundamental improvements during the first half of 1996 propelled
equities to the highest closing levels since 1992. While some profit taking and
consolidation occurred during May as the market entered a transition from a
macro driven environment to more earnings driven market, we believe the trend is
in place for the bull market to resume. Supply and demand is improving as local
pension funds have begun shifting assets from fixed income to equity, prompted
by the lowering of guaranteed return by life insurance companies from 4.5 to
2.5% during the last quarter. Evidence of an earnings driven market is also
suggested by the all-time highs for Honda and Canon, among others. On the other
hand weak DRAM prices have put pressure on semi-conductor issues, which was also
one of the best relative performance sectors over the last 12 months.
 
OUTLOOK
 
We believe we will not see drastic changes in monetary policy for the
foreseeable future. During the Lyon G-7 summit, finance minister Kubo promised
U.S. Treasury Secretary Rubin a continuation of economic reforms. Altough there
were no official announcements we believe Mr. Kubo also promised an additional
economic stimulus package to be announced in September and a continuation of
flexible monetary policy, both of which will have real impact on further growth
for the economy.
 
The cornerstone of a bull market -- low rates, economic stimulus packages,
weaker yen -- are still intact. Corporate earnings will likely be revised upward
again in September. However, uncertainty regarding interest rate policies will
likely also continue to appear as it has during the last six months, although
likely already discounted. Correlation with the U.S. markets does exist but it
appears the cycle in Japan is different without major impact from any minor
policy changes in the U.S. Of critical importance, we believe, is not only the
sustainability of the economic recovery but equally important sincerity and
determination by Japan to continue implementing structural reforms including
more deregulation to reduce the trade surplus. The effects of a weak yen we hope
will not lull Japan into slowing structural reforms. We believe the MOF, BOJ and
the Japanese authorities recognize the consequences of slowing such change and
the possibility of a surging yen again should structural reforms and confirmed
deregulation be abandoned.
 
We will maintain overweight positions in economic sensitive sectors which
represent value and show earnings momentum. Although semiconductor related
issues have consolidated due to DRAM pricing uncertainty, we believe these are
at the bottom of the cycle and patience will be rewarded as prices firm and
investors realize the business cycle for these companies significantly lag the
U.S. by several years.
 
Dominic Caldecott
PORTFOLIO MANAGER
 
Kunihiko Sugio
PORTFOLIO MANAGER
 
July 1996
 
- --------------------------------------------------------------------------------
                                                       Japanese Equity Portfolio
 
                                       65
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
STATEMENT OF NET ASSETS (UNAUDITED)
JUNE 30, 1996
- --------------------------------------------------------------------------------
 
THE JAPANESE EQUITY PORTFOLIO
 
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>
                                                                            VALUE
     SHARES                                                                 (000)
<C>                <S>                                                 <C>
- ------------------------------------------------------------
COMMON STOCKS (88.5%)
  APPLIANCES & HOUSEHOLD DURABLES (5.1%)
         312,000   Matsushita Electric Industries Ltd................  $          5,822
          91,000   Sony Corp.........................................             6,001
                                                                               --------
                                                                                 11,823
                                                                               --------
  BANKING (5.7%)
         336,000   Daiwa Securities Co., Ltd.........................             4,334
         107,000   Hitachi Credit Corp...............................             1,899
         298,000   Inabata & Co......................................             2,252
         232,000   Nomura Securities Co..............................             4,541
       (a)35,000   Sumitomo Corp. Leasing Ltd........................               213
                                                                               --------
                                                                                 13,239
                                                                               --------
  BUSINESS & PUBLIC SERVICES (2.7%)
         218,000   Dai Nippon Printing Co., Ltd......................             4,227
          76,000   Sangetsu Co., Ltd.................................             2,037
                                                                               --------
                                                                                  6,264
                                                                               --------
  CAPITAL EQUIPMENT (6.6%)
         206,000   Kyudenko Co., Ltd.................................             2,770
          60,000   Matsui Construction...............................               481
         143,000   Matsushita Communication Industries...............             3,728
          70,000   Murata Manufacturing Co., Ltd.....................             2,657
          49,600   Rinnai Corp.......................................             1,179
         610,000   Taisei Corp., Ltd.................................             4,341
                                                                               --------
                                                                                 15,156
                                                                               --------
  CHEMICALS (1.6%)
         166,000   Yamanouchi Pharmaceutical Co......................             3,614
                                                                               --------
  CONSTRUCTION & HOUSING (1.7%)
         445,000   Obayashi Corp.....................................             4,034
                                                                               --------
  CONSUMER GOODS (9.9%)
         122,000   Fuji Photo Film Ltd...............................             3,861
         164,000   Japan Vilene Co., Ltd.............................             1,125
          54,000   Nintendo Corp., Ltd...............................             4,031
         558,000   Nissan Motor Co...................................             4,966
         184,000   Sankyo Co., Ltd...................................             4,780
         317,000   Suzuki Motor Co., Ltd.............................             4,175
                                                                               --------
                                                                                 22,938
                                                                               --------
  DATA PROCESSING & REPRODUCTION (2.2%)
         244,000   Canon, Inc........................................             5,089
                                                                               --------
  ELECTRICAL COMPONENTS & INSTRUMENTS (5.7%)
          64,000   Kyocera Ltd.......................................             4,537
          79,000   TDK Corp..........................................             4,726
         132,000   Tokyo Electron Ltd................................             3,852
                                                                               --------
                                                                                 13,115
                                                                               --------
  ELECTRICAL & ELECTRONICS (11.3%)
         627,000   Hitachi Ltd.......................................             5,850
         205,000   Mitsumi Electric Co., Ltd.........................             3,263
         542,000   NEC Corp..........................................             5,900
          61,000   Square Company Ltd................................             3,588
         291,000   Stanley Electric Co...............................             2,023
 
<CAPTION>
                                                                            VALUE
     SHARES                                                                 (000)
<C>                <S>                                                 <C>
- ------------------------------------------------------------
         788,000   Toshiba Corp......................................  $          5,622
                                                                               --------
                                                                                 26,246
                                                                               --------
  FINANCE (1.6%)
          52,500   Nichido Fire & Marine Insurance Co., Ltd..........               407
         381,000   Sumitomo Marine & Fire Insurance Co...............             3,328
                                                                               --------
                                                                                  3,735
                                                                               --------
  INDUSTRIAL COMPONENTS (0.2%)
          50,000   Kansei Corp.......................................               466
                                                                               --------
  MACHINERY & ENGINEERING (9.8%)
         355,000   Amada Co., Ltd....................................             3,832
         280,000   Daikin Industries Ltd.............................             3,073
         149,000   Kurita Water Industries...........................             3,639
         593,000   Mitsubishi Heavy Industries Ltd...................             5,169
         364,000   Ricoh Co., Ltd....................................             3,862
         457,000   Tsubakimoto Chain.................................             3,123
                                                                               --------
                                                                                 22,698
                                                                               --------
  MATERIALS (6.3%)
         498,000   Daicel Chemical Industry Ltd......................             3,075
         310,000   Kaneka Corp.......................................             2,090
         823,000   Mitsubishi Chemical Corp..........................             3,809
         195,000   Okura Industrial Co., Ltd.........................             1,400
         347,000   Sekisui Chemical Co...............................             4,253
                                                                               --------
                                                                                 14,627
                                                                               --------
  MERCHANDISING (2.7%)
         350,000   Asahi Tec Corp....................................             2,542
          82,200   FamilyMart........................................             3,669
                                                                               --------
                                                                                  6,211
                                                                               --------
  METALS-NON FERROUS (1.3%)
         329,000   Sanwa Shutter.....................................             3,100
                                                                               --------
  METALS-STEEL (4.5%)
         230,000   Daifuku Co., Ltd..................................             3,534
         163,000   Fuji Machine Manufacturing Co.....................             4,607
         212,000   Nippon Pillar Packing.............................             2,385
                                                                               --------
                                                                                 10,526
                                                                               --------
  REAL ESTATE (3.3%)
         150,000   Daibiru Corp......................................             2,003
         167,000   Keihanshin Real Estate............................             1,454
         297,000   Mitsubishi Estate Co., Ltd........................             4,102
                                                                               --------
                                                                                  7,559
                                                                               --------
  RECREATION, OTHER CONSUMER GOODS (0.9%)
         159,700   Nifco, Inc........................................             2,060
                                                                               --------
  SERVICES (4.5%)
         100,000   Nippon Konpo Unyu Soko............................               910
             516   Nippon Telegraph & Telephone Corp.................             3,833
          50,000   Nishio Rent All Co................................             1,198
          66,000   Secom Co., Ltd....................................             4,371
                                                                               --------
                                                                                 10,312
                                                                               --------
</TABLE>
 
The accompanying notes are an integral part of the financial statements. (Pages
                                    182-188)
 
- --------------------------------------------------------------------------------
Japanese Equity Portfolio
 
                                       66
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
STATEMENT OF NET ASSETS (UNAUDITED)
JUNE 30, 1996
- --------------------------------------------------------------------------------
 
THE JAPANESE EQUITY PORTFOLIO (CONT.)
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>
                                                                            VALUE
     SHARES                                                                 (000)
- ------------------------------------------------------------
<C>                <S>                                                 <C>
  TEXTILES & APPAREL (0.9%)
          45,000   Shimamura Co., Ltd................................  $          1,984
                                                                               --------
TOTAL COMMON STOCKS (Cost $198,966)..................................           204,796
                                                                               --------
<CAPTION>
 
      FACE
     AMOUNT
     (000)
- ----------------
<C>                <S>                                                 <C>
SHORT-TERM INVESTMENT (8.9%)
  REPURCHASE AGREEMENT (8.9%)
        $ 20,553   Chase Securities, Inc. 5.15%, dated 6/28/96, due
                     7/01/96, to be repurchased at $20,562,
                     collateralized by $20,190 U.S. Treasury Notes,
                     7.125%, 9/30/99, valued at $20,641 (Cost
                     $20,553)........................................            20,553
                                                                               --------
FOREIGN CURRENCY (0.5%)
     JPY 139,571   Japanese Yen (Cost $1,281)........................             1,277
                                                                               --------
TOTAL INVESTMENTS (97.9%) (Cost $220,800)............................           226,626
                                                                               --------
</TABLE>
<TABLE>
<S>                                      <C>        <C>
OTHER ASSETS (3.3%)
  Cash.................................  $       1
  Net Unrealized Gain on Forward
   Foreign Currency Exchange
   Contracts...........................      7,031
  Dividends Receivable.................        575
  Receivable for Portfolio Shares
   Sold................................         44
  Interest Receivable..................          9
  Other................................         48      7,708
                                         ---------
LIABILITIES (-1.2%)
  Payable for Investments Purchased....     (2,347)
  Investment Advisory Fees Payable.....       (426)
  Administrative Fees Payable..........        (28)
  Custodian Fees Payable...............        (14)
  Distribution Fees Payable............         (3)
  Payable for Portfolio Shares
   Redeemed............................         (3)
  Other Liabilities....................        (59)    (2,880)
                                         ---------  ---------
NET ASSETS (100%).................................   $231,454
                                                    ---------
                                                    ---------
 
<CAPTION>
                                                     AMOUNT
                                                      (000)
<S>                                      <C>        <C>
- ------------------------------------------------------------
NET ASSETS CONSIST OF:
Paid in Capital...................................  $ 217,212
Accumulated Net Investment Loss...................     (2,586)
Accumulated Net Realized Gain.....................      3,987
Unrealized Appreciation on Investments and Foreign
Currency Translations.............................     12,841
                                                    ---------
NET ASSETS........................................   $231,454
                                                    ---------
                                                    ---------
CLASS A
NET ASSETS........................................  $ 225,965
NET ASSET VALUE, OFFERING AND REDEMPTION
  PRICE PER SHARE
  Applicable to 22,608,284 outstanding $0.001 par
  value shares (authorized 500,000,000 shares)....     $ 9.99
                                                    ---------
                                                    ---------
CLASS B
NET ASSETS........................................     $5,489
NET ASSET VALUE, OFFERING AND REDEMPTION
  PRICE PER SHARE
  Applicable to 550,750 outstanding $0.001 par
  value shares (authorized 500,000,000 shares)....     $ 9.97
                                                    ---------
                                                    ---------
- ------------------------------------------------------------
FORWARD FOREIGN CURRENCY EXCHANGE CONTRACT INFORMATION:
  Under the terms of forward foreign currency exchange
  contracts open at June 30, 1996, the Portfolio is obligated
  to deliver foreign currency in exchange for U.S. dollars as
  indicated below:
</TABLE>
 
<TABLE>
<CAPTION>
                                                                    NET
 CURRENCY TO                                                    UNREALIZED
   DELIVER       VALUE    SETTLEMENT   IN EXCHANGE    VALUE     GAIN (LOSS)
    (000)        (000)       DATE       FOR (000)     (000)        (000)
- -------------  ---------  -----------  -----------  ---------  -------------
<S>            <C>        <C>          <C>          <C>        <C>
JPY 3,234,140  $  29,630     7/09/96   U.S.$31,500  $  31,500    $   1,870
JPY 5,752,672     52,921     8/06/96   U.S.$55,800     55,800        2,879
JPY 6,001,148     55,593     9/25/96   U.S.$57,500     57,500        1,907
JPY 2,528,280     23,625    11/22/96   U.S.$24,000     24,000          375
               ---------                            ---------       ------
               $ 161,769                            $ 168,800    $   7,031
               ---------                            ---------       ------
               ---------                            ---------       ------
</TABLE>
 
- ------------------------------------------------------------
(a) -- Non-income producing security
 
The accompanying notes are an integral part of the financial statements. (Pages
                                    182-188)
 
- --------------------------------------------------------------------------------
                                                       Japanese Equity Portfolio
 
                                       67
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
 
OVERVIEW
- --------------------------------------------------------------------------------
 
THE LATIN AMERICAN PORTFOLIO
 
COMPOSITION OF NET ASSETS (AT JUNE 30, 1996)
 
EDGAR REPRESENTATION OF DATA POINTS USED IN PRINTED GRAPHIC
 
<TABLE>
<S>         <C>
Argentina        9.1%
Brazil          45.2%
Chile            7.7%
Colombia         5.5%
Mexico          27.7%
Peru             1.0%
Venezuela        2.6%
Other            1.2%
</TABLE>
 
PERFORMANCE COMPARED TO MORGAN STANLEY
CAPITAL INTERNATIONAL (MSCI) EMERGING MARKETS GLOBAL LATIN AMERICA INDEX(1)
- -------------------------------------------
 
<TABLE>
<CAPTION>
                                       TOTAL RETURNS(2)
                          -------------------------------------------
                                                     AVERAGE ANNUAL
                             YTD        ONE YEAR     SINCE INCEPTION
                          ----------  ------------  -----------------
<S>                       <C>         <C>           <C>
PORTFOLIO -- CLASS A....      34.55%       39.62%          15.27%
PORTFOLIO -- CLASS
B(3)....................      28.92          N/A             N/A
INDEX...................      17.49        17.44            5.48
 
<FN>
 
1. The MSCI Emerging Markets Global Latin America Index is a broad based market
   cap weighted composite index covering at least 60% of markets in Mexico,
   Argentina, Brazil, Chile, Colombia, Peru and Venezuela (assumes dividends
   reinvested).
 
2. Total returns for the Portfolio reflect expenses waived and reimbursed, if
   applicable, by the Adviser. Without such waiver and reimbursement, total
   returns would be lower.
 
3. The Portfolio began offering Class B shares on January 2, 1996.
</TABLE>
 
PAST PERFORMANCE IS NOT PREDICTIVE OF FUTURE PERFORMANCE.
 
- ------------------------------------------------------------
 
THE PERFORMANCE RESULTS PROVIDED ARE FOR INFORMATIONAL PURPOSES ONLY AND SHOULD
NOT BE CONSTRUED AS A GUARANTEE OF THE PORTFOLIO'S FUTURE PERFORMANCE. PAST
PERFORMANCE SHOWN IS NOT PREDICTIVE OF FUTURE PERFORMANCE. INVESTMENT RETURN AND
PRINCIPAL VALUE WILL FLUCTUATE SO THAT AN INVESTOR'S SHARES, WHEN REDEEMED, MAY
BE WORTH MORE OR LESS THAN THEIR ORIGINAL COST. PLEASE SEE THE PROSPECTUS FOR A
DESCRIPTION OF CERTAIN RISK CONSIDERATIONS ASSOCIATED WITH INTERNATIONAL
INVESTING.
 
The investment objective of the Latin American Portfolio is long-term capital
appreciation through investment primarily in equity securities of Latin American
issuers. The Portfolio may also invest in debt securities issued or guaranteed
by a Latin American government or governmental entity.
 
For the six month period ended June 30, 1996, the Portfolio had a total return
of 34.55% for the Class A shares and 28.92% for the Class B shares, as compared
to a total return of 17.49% for the Morgan Stanley Capital International (MSCI)
Emerging Markets Global Latin America Index. The average annual total return for
the twelve months ended June 30, 1996 and for the period from inception on
January 18, 1995 through June 30, 1996 was 39.62% and 15.27%, respectively, for
the Class A shares, as compared to 17.44% and 5.48%, respectively, for the
Index.
 
The table below presents the percentage change in the Morgan Stanley Capital
International indices for each respective country, in U.S. dollar terms, as of
June 30, 1996, for the period presented:
 
<TABLE>
<CAPTION>
                             3 MONTHS       6 MONTHS       12 MONTHS
                           -------------  -------------  -------------
<S>                        <C>            <C>            <C>
Argentina................         15.3%          14.8%          36.2%
Brazil...................         15.4           28.4           31.2
Chile....................         11.2            1.7          (13.6)
Colombia.................          7.5            2.9          (17.2)
Mexico...................          4.8           15.6           19.7
Peru.....................          9.1            8.8           19.6
Venezuela................         40.0           56.4           31.3
</TABLE>
 
- ---------------
courtesy: FAME/Randall-Helms
 
ARGENTINA
 
The rally in the Argentine stock market was due primarily to signs of economic
recovery after the strong recession in 1995. Liquidity in the local financial
system is very high and local short term rates are low. The market had two
successful IPOs in the second quarter and inflation is almost nonexistent.
Nevertheless, we are somewhat cautious on the market due to the absence of
strong earnings growth at the corporate level and the potential for rising rates
in the U.S. to spill over into Argentina. The lingering unemployment (17%) is
also acting to restrain somewhat economic growth and complicating fiscal
accounts which are highly dependent on domestic economic activity. On the
positive side, Argentine trade accounts are benefiting enormously from the sharp
rise in agricultural commodity prices.
 
BRAZIL
 
In spite of an absence of tangible political progress on the economic reform
front, the stock market had a robust performance. What we have seen, and we
expect to continue to see unfolding for the remainder
 
- --------------------------------------------------------------------------------
Latin American Portfolio
 
                                       68
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- --------------------------------------------------------------------------------
 
OVERVIEW
- --------------------------------------------------------------------------------
THE LATIN AMERICAN PORTFOLIO (CONT.)
of the year, is an increased emphasis on company fundamentals and economic
variables and a decreased emphasis on the political process. This is not to say
that the political process is unimportant nor that it is incapable of delivering
either positive or negative surprises, but rather that, as a stock market
factor, it has receded in importance. We view this process as a healthy sign of
the "maturation" of the market and a symptom of Brazil's emergence as a
relatively stable economy and marketplace. The Real Plan now has two years under
its belt, inflation is benign if not yet slayed, the trade accounts are
balanced, and interest rates are continuing to fall. In short, the Brazilian
turnaround is becoming increasingly entrenched, and the financial markets are
recognizing this relative stability.
 
Nevertheless, there remains much work to be done, to be sure. The fiscal
accounts are still in deficit at the operational level (though improving), the
state's finances are still problematic, the social security fund will soon be
bankrupt, tax levels are too high, and so on. The important thing, though, is
that the government has proven itself to be adept at managing the components of
the economy over which it has direct control, even while showing itself to be
somewhat less adept at quickly maneuvering legislation through congress. The
areas that we are particularly encouraged by are those sectors in which the
government owns the monopolies -- i.e. oil and gas, mining, telecommunications,
and electric generation. In each of these extremely important sectors, the
government will either liberalize or privatize the state-run companies that
currently exist. These sectors -- together with ports and railroads, which will
likewise be privatized or liberalized -- form the backbone of economic
development and in Brazil's case will help propel the dramatic economic
restructuring and growth unfolding before our eyes. So even if congress slows
down the reform process to a snail's pace, we are increasingly of the opinion
that the economy can still grow at a reasonable pace.
 
The telecommunications industry, through monopoly provider Telebras and its
operating subsidiaries, has witnessed a dramatic turnaround in profitability due
to tariff reform implemented by the government. Further, draft legislation is
circulating which will create a regulatory framework for the sector as well as
provide the basis for free competition in the cellular telephone business.
Eventually, we are increasingly of the opinion that the government will
privatize the entire sector, via Telebras.
 
Electric generation, while slightly more cumbersome to reorganize than
telecommunications, is likewise witnessing positive change. After much delay,
the government successfully privatized Rio-based electric distributor Light.
Profitability is improving, if not robust, due to tariff reform. A regulatory
framework is being established, and steps are being taken to prepare pieces of
the sector for privatization. The timing of a dramatic restructuring of the
industry, however, will likely be more drawn out than with telecommunications.
 
We expect interest rates to find a bottom sometime in the second half of the
year, as the economy picks up steam and municipal election-related spending
kicks into gear. Corporate profits, while spotty in the private sector and
strong in the tariff-reform led public sector, should gather momentum in the
latter part of the year together with the economy. We expect inflation to
continue benign, the currency to move with inflation differentials, the trade
accounts to remain roughly in balance or slightly deteriorate as the economy
picks up, and the fiscal deficit to persist but improve.
 
CHILE
 
After a long period of underperformance the Chilean market has rallied recently.
Expectations are that interest rate tightening is coming to an end as the torrid
pace of economic growth begins to weaken. We are positioned in a couple of fast
growing consumer stocks which are benefiting from strong demand and who are
taking their management skills and setting up operations in neighboring
countries. Andina is a Coca-Cola bottler and Santa Isabel is a supermarket
chain. We are less excited about the growth prospects of the rest of the stock
market.
 
COLOMBIA
 
The Colombian market is still in the grips of the political crisis over the
tenure of President Samper. Hopes that he would resign were dashed when the
Colombian Congress found him innocent of knowingly accepting drug money to fund
his 1994 Presidential campaign. The U.S. government has threatened sanctions in
response.
 
The Central Bank's fight against inflation continues to keep real interest rates
at high levels, though concern over the slowing of the economy prompted a slight
temporary easing in the second quarter. GDP growth has slowed down from prior
years' levels and will likely fall in the 3% to 4% range for the entire year. We
remain optimistic about our holdings in the
 
- --------------------------------------------------------------------------------
                                                        Latin American Portfolio
 
                                       69
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        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
 
OVERVIEW
- --------------------------------------------------------------------------------
THE LATIN AMERICAN PORTFOLIO (CONT.)
financial sector, which are experiencing improving profitability due to good
interest rate spreads, cost-cutting and improved asset quality.
 
MEXICO
 
The market rise has been driven by expectations of a strong economic recovery
during the second half of 1996, lower inflation and interest rates, and a
strengthening peso in real terms. Holding the market back somewhat has been a
series of political and business scandals. Year-to-date, domestic stocks have
clearly outperformed exporters as signs of an economic recovery begin to emerge.
Unemployment has fallen from 6.4% in January to 5.4% in May, and GDP growth
consensus estimates have risen to 3.7% for 1996. Furthermore, the Mexican
government has returned to international capital markets and has raised $6.5
billion, refinancing outstanding debts at more attractive rates. Macroeconomic
fundamentals continue to move in a positive direction as inflation for the first
six months of 1996 is at 15.3% versus 32.9% during the first 6 months of 1995.
The trade surplus continues to grow albeit at a slower pace at $3.3 billion for
the first five months of 1996. Foreign exchange reserves remain at $15 billion,
about the same level at which they finished 1995.
 
The market continues to look attractive as domestically driven companies should
show strong growth in the second half of 1996. Nevertheless, as democratic
opening occurs, the possibility of corruption scandals continue to lurk in the
background. Domestic growth will pick up in the second half as inflation
continues to decline, interest rates remain stable and the peso continues to
strengthen. Under this scenario the Portfolio is emphasizing interest rate
sensitive banks, consumer companies, and cement stocks. Bancomer should continue
to benefit from falling interest rates, economic recovery, and reduced risk in
the banking system. Femsa holds undervalued assets in the beer, packaging and
retail sectors. Cemex is participating in the recovery of cement prices and
cement demand in Mexico.
 
PERU
 
The Peruvian market has recently begun to rebound on waning concerns about the
economy and renewed interest in the market on the back of a successful July
placement of over US$1 billion of Telefonica del Peru stock in local and
international markets.
 
Investors modified their overly pessimistic outlook for the economy, which
recorded negative growth figures for the first quarter, but began turning around
in subsequent months. Visibility into future performance increased with the
signing of an IMF agreement during the second quarter which outlined
conservative economic targets, including a 1% primary fiscal surplus and a
shrinking current account deficit over the next few years. The soft landing
engineered by the government to transition the country into a period of
sustained growth around the 4.5% level appears to have been successful at the
expense of an expected 2% to 3% growth performance for 1996. The government
continues its firm commitment to privatization, currently targeting the oil and
mining sectors, and President Fujimori's popularity remains strong.
 
Our position in Telefonica del Peru (which increased on July 1) anticipates 20%
net income growth each year until 1998, after more than doubling earnings in
1995.
 
VENEZUELA
 
The introduction of a free-market economic stabilization plan under IMF auspices
propelled the stock and bond markets. Capital and price controls were abolished
and the currency and interest rates allowed to float freely, marking the end of
a two-year closed-economy experiment that brought about high rates of inflation
and poor economic performance. While we are optimistic about long term prospects
in Venezuela, we recognize that the economy must undergo a lengthy adjustment
process in order for the government to successfully control inflation, allow for
positive real interest rates, set a rational trading range for the currency and
privatize inefficient state enterprises. We are therefore maintaining our
position in Venezuelan fixed income, which we feel will more immediately benefit
from the country's improved ability and willingness to service debt, while
providing an attractive yield.
 
Overall we are excited about the growth prospects of our companies and the
recovery of the Latin American economies. The markets should continue to perform
well assuming a relatively benign U.S. environment.
 
Robert L. Meyer
PORTFOLIO MANAGER
 
July 1996
 
- --------------------------------------------------------------------------------
Latin American Portfolio
 
                                       70
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
STATEMENT OF NET ASSETS (UNAUDITED)
JUNE 30, 1996
- --------------------------------------------------------------------------------
 
THE LATIN AMERICAN PORTFOLIO
 
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>
                                                                            VALUE
     SHARES                                                                 (000)
<C>                <S>                                                 <C>
- ------------------------------------------------------------
COMMON STOCKS (66.6%)
  ARGENTINA (9.1%)
       (a)22,885   Banco del Sud, Class B............................  $            268
          69,842   Banco del Suquia, Class B.........................               132
       (a)18,515   Disco S.A. ADR....................................               410
          11,429   Quilmes Industrial S.A............................               117
       (a)55,710   Siderar S.A., Class A.............................               143
      (a,e)6,370   Siderar S.A. ADR..................................               130
           5,898   Telecom Argentina S.A. ADR........................               276
          26,578   Telefonica de Argentina S.A. ADR..................               787
          12,149   YPF S.A. ADR......................................               272
                                                                                -------
                                                                                  2,535
                                                                                -------
  BRAZIL (16.7%)
           4,424   Cia Energetica de Minas Gerais ADR................               126
      (a,e)1,792   Cia Energetica de Minas Gerais ADR................                48
         779,000   Electricidade de Sao Paulo S.A....................                81
       3,301,000   Eletrobras........................................               888
     (a,e)23,185   Eletrobras ADR....................................               312
    (a,d)515,000   Light.............................................                36
          15,233   Pao de Acucar ADR.................................               252
           2,150   Pao de Acucar GDR.................................                36
      11,066,000   Telebras..........................................               650
          29,230   Telebras ADR......................................             2,035
    (a)1,055,663   Telesp............................................               186
                                                                                -------
                                                                                  4,650
                                                                                -------
  CHILE (7.7%)
          21,375   Embotelladora Andina S.A. ADR.....................               785
           6,970   Empresa Nacional Electricidad S.A. ADR............               150
           2,845   Enersis S.A. ADR..................................                88
          40,610   Santa Isabel S.A. ADR.............................             1,127
                                                                                -------
                                                                                  2,150
                                                                                -------
  COLOMBIA (4.4%)
           1,750   Banco Ganadero S.A. ADR...........................                42
       2,601,726   Banco de Colombia.................................               988
       (e)23,225   Banco de Colombia GDR.............................               203
                                                                                -------
                                                                                  1,233
                                                                                -------
  MEXICO (27.7%)
          69,301   Alfa S.A. de C.V., Class A........................               311
          71,170   Apasco S.A., Class A..............................               393
      (a)200,575   Banacci, Class B..................................               417
       (a)78,246   Banacci, Class L..................................               149
       (e)23,950   Cemex CPO ADR.....................................               166
         209,960   Cemex CPO S.A., Class A...........................               745
      (a)288,580   Cifra S.A. de C.V., Class B.......................               416
       (a)58,875   Cifra S.A. de C.V., Class C.......................                84
      (a)107,520   Comerci, Series B.................................               100
       (a)16,120   Empresas ICA S.A. ADR.............................               224
          98,460   Farmacia Benevides S.A. de C.V., Class B..........               191
         333,390   FEMSA, Class B....................................               945
       (a)27,150   Gruma S.A., Class B...............................               126
      (a,e)6,850   Grupo Carso S.A. ADR..............................                97
 
<CAPTION>
                                                                            VALUE
     SHARES                                                                 (000)
<C>                <S>                                                 <C>
- ------------------------------------------------------------
          44,360   Grupo Cementos de Chihuahua S.A. de C.V., Class
                     B...............................................  $             45
     (a,e)90,222   Grupo Financiero Bancomer, Class B, ADR...........               778
      (a)246,710   Grupo Financiero Bancomer, Class B................               107
       (a)16,985   Grupo Televisa S.A. GDR...........................               522
          13,900   Kimberly Clark de Mexico S.A. de C.V., Class A....               253
           7,500   Panamerican Beverages, Inc., Class A..............               334
       (a)74,220   Sears Roebuck de Mexico S.A. de C.V., Class B1....               195
          33,105   Telefonos de Mexico S.A. ADR, Class L.............             1,109
                                                                                -------
                                                                                  7,707
                                                                                -------
  PERU (1.0%)
         135,380   Telefonica del Peru S.A., Class B.................               273
                                                                                -------
TOTAL COMMON STOCKS (Cost $16,267)...................................            18,548
                                                                                -------
PREFERRED (29.0%)
  BRAZIL (NON-VOTING STOCKS) (28.5%)
     141,307,771   Banco Bradesco S.A................................             1,154
   (d)11,847,000   Banco Nacional S.A................................                 1
       2,431,173   Brahma............................................             1,451
       2,785,000   Casa Anglo Brasileira S.A.........................               153
       8,914,000   Cia Energetica de Minas Gerais....................               237
    (a)9,951,000   Cia Paulista de Forca E Luz.......................               654
          12,435   Cia Vale Do Rio Doce..............................               241
         559,000   Coteminas.........................................               220
         152,211   Dixie Toga S.A....................................               147
         756,000   Eletrobras, Class B...............................               216
       1,681,400   Itaubanco.........................................               683
         180,000   Itausa Investimentos Itau S.A.....................               138
      21,739,000   Lojas Renner......................................             1,148
       4,627,000   Petrobras.........................................               569
      13,302,000   Telebras..........................................               929
                                                                                -------
                                                                                  7,941
                                                                                -------
  COLOMBIA (0.5%)
         302,576   Banco Ganadero....................................                60
           4,500   Banco Ganadero S.A. ADR...........................                88
                                                                                -------
                                                                                    148
                                                                                -------
TOTAL PREFERRED (Cost $6,268)........................................             8,089
                                                                                -------
<CAPTION>
      FACE
     AMOUNT
     (000)
- ----------------
<C>                <S>                                                 <C>
FIXED INCOME SECURITIES (3.2%)
  COLOMBIA (0.6%)
 $        (e)190   Banco de Colombia 5.20%, 2/01/99..................               170
                                                                                -------
  VENEZUELA (2.6%)
           1,000   Republic of Venezuela Debt Conversion Bonds,
                     Series DL, (Floating Rate), 6.625%, 12/18/07....               707
                                                                                -------
TOTAL FIXED INCOME SECURITIES (Cost $725)............................               877
                                                                                -------
TOTAL FOREIGN SECURITIES (98.8%) (Cost $23,260)......................            27,514
                                                                                -------
</TABLE>
 
The accompanying notes are an integral part of the financial statements. (Pages
                                    182-188)
 
- --------------------------------------------------------------------------------
                                                        Latin American Portfolio
 
                                       71
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
STATEMENT OF NET ASSETS (UNAUDITED)
JUNE 30, 1996
- --------------------------------------------------------------------------------
 
THE LATIN AMERICAN PORTFOLIO (CONT.)
- --------------------------------------------------------------------------------
 
<TABLE>
<CAPTION>
     AMOUNT                                                                 VALUE
     (000)                                                                  (000)
<C>                <S>                                                 <C>
- ------------------------------------------------------------
FOREIGN CURRENCY (0.2%)
     ARP       3   Argentine Peso....................................  $              3
     BRC      10   Brazilian Real....................................                10
      MXP      9   Mexican Peso......................................                 1
    PSS      129   Peruvian New Sol..................................                53
                                                                                -------
TOTAL FOREIGN CURRENCY (Cost $67)....................................                67
                                                                                -------
TOTAL INVESTMENTS (99.0%) (Cost $23,327).............................            27,581
                                                                                -------
</TABLE>
 
<TABLE>
<S>                                        <C>        <C>
OTHER ASSETS (3.9%)
  Receivable for Investments Sold........  $     904
  Dividends Receivable...................        160
  Interest Receivable....................          7
  Receivable for Portfolio Shares Sold...          4
  Other..................................          6      1,081
                                           ---------
LIABILITIES (-2.9%)
  Payable for Investments Purchased......       (471)
  Bank Overdraft.........................       (220)
  Investment Advisory Fees Payable.......        (38)
  Custodian Fees Payable.................        (28)
  Administrative Fees Payable............         (4)
  Payable for Portfolio Shares
   Redeemed..............................         (1)
  Sub-Administrative Fees Payable........         (1)
  Other Liabilities......................        (27)      (790)
                                           ---------  ---------
NET ASSETS (100%)...................................    $27,872
                                                      ---------
                                                      ---------
NET ASSETS CONSIST OF:
Paid in Capital.....................................  $  21,994
Undistributed Net Investment Income.................        281
Accumulated Net Realized Gain.......................      1,345
Unrealized Appreciation on Investments and Foreign
  Currency Translations.............................      4,252
                                                      ---------
NET ASSETS..........................................    $27,872
                                                      ---------
                                                      ---------
CLASS A:
NET ASSETS..........................................  $  27,055
NET ASSET VALUE, OFFERING AND REDEMPTION
  PRICE PER SHARE
  Applicable to 2,220,291 outstanding $0.001 par
   value shares (authorized 500,000,000 shares).....     $12.19
                                                      ---------
                                                      ---------
CLASS B:
NET ASSETS..........................................       $817
NET ASSET VALUE, OFFERING AND REDEMPTION
  PRICE PER SHARE
  Applicable to 67,158 outstanding $0.001 par value
  shares (authorized 500,000,000 shares)............     $12.17
                                                      ---------
                                                      ---------
</TABLE>
 
- ------------------------------------------------------------
(a)  -- Non-income producing security
(d)  -- Securities valued at fair value -- See note A-1 to financial statements
(e)  -- 144A Security -- Certain conditions for public sale may exist
ADR -- American Depositary Receipt
CPO -- Ordinary Participating Certificates (no voting rights)
GDR -- Global Depositary Receipt
Floating Rate -- Interest rate changes on these instruments are based on changes
in a designated base rate. The rates shown are those in effect on June 30, 1996.
            SUMMARY OF FOREIGN SECURITIES BY INDUSTRY CLASSIFICATION
 
<TABLE>
<CAPTION>
                                           VALUE     PERCENT OF
INDUSTRY                                   (000)     NET ASSETS
<S>                                      <C>        <C>
- -----------------------------------------------------------------
Capital Equipment......................  $     366         1.3%
Consumer Goods.........................      6,489        23.3
Energy.................................      3,677        13.2
Finance................................      5,377        19.3
Government.............................        708         2.6
Materials..............................      2,291         8.2
Multi-Industry.........................      1,643         5.9
Services...............................      6,963        25.0
                                         ---------       ---
                                         $  27,514        98.8%
                                         ---------       ---
                                         ---------       ---
</TABLE>
 
The accompanying notes are an integral part of the financial statements. (Pages
                                    182-188)
 
- --------------------------------------------------------------------------------
Latin American Portfolio
 
                                       72
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
 
OVERVIEW
- --------------------------------------------------------------------------------
 
THE AGGRESSIVE EQUITY PORTFOLIO
 
COMPOSITION OF NET ASSETS (AT JUNE 30, 1996)
 
EDGAR REPRESENTATION OF DATA POINTS USED IN PRINTED GRAPHIC
 
<TABLE>
<S>                         <C>
Capital Goods-Construction       9.5%
Consumer-Cyclical               22.2%
Consumer-Staples                25.7%
Diversified                      6.0%
Finance                         22.8%
Materials                        1.9%
Technology                       1.0%
Other                           10.9%
</TABLE>
 
PERFORMANCE COMPARED TO THE LIPPER CAPITAL
APPRECIATION INDEX AND THE S&P 500 INDEX(1)
- ----------------------------------------
 
<TABLE>
<CAPTION>
                                       TOTAL RETURNS(2)
                          -------------------------------------------
                                                     AVERAGE ANNUAL
                             YTD        ONE YEAR     SINCE INCEPTION
                          ----------  ------------  -----------------
<S>                       <C>         <C>           <C>
PORTFOLIO -- CLASS A....      22.63%       46.39%          51.85%
PORTFOLIO -- CLASS
B(3)....................      21.75          N/A             N/A
LIPPER CAPITAL
APPRECIATION INDEX......      10.25        23.21           28.24
S&P 500 INDEX...........      10.09        25.98           31.47
 
<FN>
 
1. The Lipper Capital Appreciation Index is a composite of mutual funds managed
   for maximum capital gains. The S&P 500 is an unmanaged index of common
   stocks.
 
2. Total returns for the Portfolio reflect expenses waived and reimbursed, if
   applicable, by the Adviser. Without such waiver and reimbursement, total
   returns would be lower.
 
3. The Portfolio began offering Class B Shares on January 2, 1996.
</TABLE>
 
PAST PERFORMANCE IS NOT PREDICTIVE OF FUTURE PERFORMANCE.
 
- ------------------------------------------------------------
 
THE PERFORMANCE RESULTS PROVIDED ARE FOR INFORMATIONAL PURPOSES ONLY AND SHOULD
NOT BE CONSTRUED AS A GUARANTEE OF THE PORTFOLIO'S FUTURE PERFORMANCE. PAST
PERFORMANCE SHOWN IS NOT PREDICTIVE OF FUTURE PERFORMANCE. INVESTMENT RETURN AND
PRINCIPAL VALUE WILL FLUCTUATE SO THAT AN INVESTOR'S SHARES, WHEN REDEEMED, MAY
BE WORTH MORE OR LESS THAN THEIR ORIGINAL COST.
 
The Aggressive Equity Portfolio seeks long-term capital appreciation through a
concentrated, non-diversified portfolio of U.S. equity securities. Short sales
and options can be used to enhance performance, although this strategy was not
being utilized at June 30. It is anticipated that the Portfolio will hold thirty
names or less, although it may hold more from time to time.
 
For the six month period ended June 30, 1996, the Portfolio had a total return
of 22.63% for the Class A shares and 21.75% for the Class B shares, as compared
to a total return of 10.25% for the Lipper Capital Appreciation Index and 10.09%
for the S&P 500 Index for the same period. The average annual total return for
the twelve months ended June 30, 1996 and for the period from inception on March
8, 1995 through June 30, 1996 was 46.39% and 51.85%, respectively, for the Class
A shares, as compared to 23.21% and 28.24%, respectively, for the Lipper Capital
Appreciation Index and 25.98% and 31.47%, respectively, for the S&P 500 Index.
 
Cash accounted for approximately 11% of Portfolio assets at June 30. We do not
attempt to time the market, nor do we attempt to project economic trends. The
cash at quarter end had built up as a residual of our normal investment
activity, as some of our large positions had moved up significantly and we
elected to reduce our exposure to them.
 
The top twelve holdings represented 65.4% of the Portfolio net assets at June
30, underscoring the high degree of concentration employed. The largest position
was Philip Morris, at 10.5% of net assets. Philip Morris has been the largest
position since the Portfolio's inception in March 1995. But when the tobacco
group sold off in March and April of this year on investor concerns over
political and legal issues, and Philip Morris traded down into the mid-$80s, we
took advantage of our ability to concentrate and went to as much as 22% of net
assets in the stock. To us, the risk/reward at that point was overwhelming
because: business trends were great; EPS estimates were rising; the company was
taking advantage of weakness to accelerate share repurchases; and non-tobacco
consumer staple growth stocks were rising, making the relative valuation of
Philip Morris extremely compelling. From the low point in April, the stock
rallied 25%, and we subsequently cut our bet almost in half. This 25% move began
to look particularly rewarding in June, when many high flying and widely owned
growth stocks were crushed.
 
Unlike Philip Morris, which we still like a lot, we actually added to our RJR
Nabisco bet throughout
 
- --------------------------------------------------------------------------------
                                                     Aggressive Equity Portfolio
 
                                       73
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
 
OVERVIEW
- --------------------------------------------------------------------------------
THE AGGRESSIVE EQUITY PORTFOLIO (CONT.)
the June quarter. We hope RJR is Philip Morris two years ago: unloved,
underowned and a powerful cash generator with improving business trends.
Statistically, RJR, a 9.7% holding at June 30, looks incredible. At $30 1/4, the
price to estimated 1996 free cash flow per share of $4.10 is 7.4 times, and the
dividend yield is 6.1%. We expect RJR to raise the dividend significantly in
March of 1997 and again in March of 1998. Finally, another potential kicker to
ignite performance would be the spin-off of the food assets.
 
Other large holdings include United Technologies, mortgage insurer CMAC
Investment, HFS and Loews Corp.
 
Kurt Feuerman
PORTFOLIO MANAGER
 
July 1996
 
- --------------------------------------------------------------------------------
Aggressive Equity Portfolio
 
                                       74
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
STATEMENT OF NET ASSETS (UNAUDITED)
JUNE 30, 1996
- --------------------------------------------------------------------------------
 
THE AGGRESSIVE EQUITY PORTFOLIO
 
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>
                                                                  VALUE
  SHARES                                                          (000)
- ------------------------------------------------------------
<C>         <S>                                                 <C>
COMMON STOCKS (89.1%)
  CAPITAL GOODS-CONSTRUCTION (9.5%)
    AEROSPACE & DEFENSE (9.3%)
     4,000  General Dynamics Corp.............................  $      248
    14,400  McDonnell Douglas Corp............................         698
    30,800  United Technologies Corp..........................       3,542
                                                                ----------
                                                                     4,488
                                                                ----------
    BUILDING & CONSTRUCTION (0.2%)
     5,500  AMRE, Inc.........................................         120
                                                                ----------
  TOTAL CAPITAL GOODS-CONSTRUCTION............................       4,608
                                                                ----------
  CONSUMER-CYCLICAL (22.2%)
    BROADCAST-RADIO & TELEVISION (1.1%)
 (a)17,600  Heftel Broadcasting Corp., Class A................         521
                                                                ----------
    ENTERTAINMENT & LEISURE (3.5%)
 (a)56,800  GTECH Holdings Corp...............................       1,683
                                                                ----------
    FOOD SERVICE & LODGING (13.2%)
 (a)68,300  Boston Chicken, Inc...............................       2,220
  (a)8,400  Foodmaker, Inc....................................          72
 (a)21,200  HFS, Inc..........................................       1,484
 (a)22,600  ITT Corp. (New)...................................       1,497
    33,600  La Quinta Inns, Inc...............................       1,126
                                                                ----------
                                                                     6,399
                                                                ----------
    LEISURE RELATED (0.6%)
    18,100  International Game Technology.....................         305
                                                                ----------
    PHOTOGRAPHY & OPTICAL (1.1%)
    31,000  PCA International, Inc............................         519
                                                                ----------
    PUBLISHING (1.9%)
 (a)60,200  K-III Communications Corp.........................         753
     5,200  New York Times Co., Class A.......................         170
                                                                ----------
                                                                       923
                                                                ----------
    RETAIL-GENERAL (0.8%)
  (a)8,100  PetSmart, Inc.....................................         387
                                                                ----------
  TOTAL CONSUMER-CYCLICAL.....................................      10,737
                                                                ----------
  CONSUMER-STAPLES (25.7%)
    BEVERAGES (2.5%)
    34,700  Coca Cola Enterprises, Inc........................       1,202
                                                                ----------
    FOOD (3.0%)
    19,900  Kellogg Co........................................       1,458
                                                                ----------
    TOBACCO (20.2%)
    49,000  Philip Morris Cos., Inc...........................       5,096
   150,700  RJR Nabisco Holdings Corp.........................       4,672
                                                                ----------
                                                                     9,768
                                                                ----------
  TOTAL CONSUMER-STAPLES......................................      12,428
                                                                ----------
 
<CAPTION>
                                                                  VALUE
  SHARES                                                          (000)
- ------------------------------------------------------------
<C>         <S>                                                 <C>
 
  DIVERSIFIED (6.0%)
     8,400  AlliedSignal, Inc.................................  $      480
    30,300  Loews Corp........................................       2,390
                                                                ----------
  TOTAL DIVERSIFIED...........................................       2,870
                                                                ----------
  FINANCE (22.8%)
    BANKING (5.7%)
     8,400  Citicorp..........................................         694
     8,600  Wells Fargo & Co..................................       2,054
                                                                ----------
                                                                     2,748
                                                                ----------
    FINANCIAL SERVICES (7.4%)
    48,500  American Express Co...............................       2,164
     6,100  CIGNA Corp........................................         719
     9,800  Student Loan Marketing Association................         725
                                                                ----------
                                                                     3,608
                                                                ----------
    INSURANCE (9.2%)
     9,000  Ace Ltd...........................................         423
    58,400  CMAC Investment Corp..............................       3,358
     7,100  PartnerRe Ltd.....................................         212
    10,400  PMI Group (The), Inc..............................         442
                                                                ----------
                                                                     4,435
                                                                ----------
    REAL ESTATE (0.5%)
  (a)8,300  Insignia Financial Group, Inc., Class A...........         225
                                                                ----------
  TOTAL FINANCE...............................................      11,016
                                                                ----------
  MATERIALS (1.9%)
    CHEMICALS (1.9%)
     6,100  IMC Global, Inc...................................         230
     4,800  Olin Corp.........................................         428
     3,800  Potash Corp. of Saskatchewan, Inc.................         252
                                                                ----------
  TOTAL MATERIALS.............................................         910
                                                                ----------
  TECHNOLOGY (1.0%)
    ELECTRONICS (1.0%)
     6,300  Intel Corp........................................         463
                                                                ----------
TOTAL COMMON STOCKS (Cost $40,475)............................      43,032
                                                                ----------
<CAPTION>
   FACE
  AMOUNT
  (000)
- ----------
<C>         <S>                                                 <C>
SHORT-TERM INVESTMENT (11.0%)
  REPURCHASE AGREEMENT (11.0%)
 $   5,331  Chase Securities, Inc. 5.15%, dated 6/28/96, due
              7/01/96, to be repurchased at $5,333,
              collateralized by $5,240, U.S. Treasury Notes,
              7.125%, due 9/30/99, valued at $5,357 (Cost
              $5,331).........................................       5,331
                                                                ----------
</TABLE>
 
The accompanying notes are an integral part of the financial statements. (Pages
                                    182-188)
 
- --------------------------------------------------------------------------------
                                                     Aggressive Equity Portfolio
 
                                       75
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
STATEMENT OF NET ASSETS (UNAUDITED)
JUNE 30, 1996
- --------------------------------------------------------------------------------
 
THE AGGRESSIVE EQUITY PORTFOLIO (CONT.)
- --------------------------------------------------------------------------------
 
<TABLE>
<CAPTION>
                                                                  VALUE
                                                                  (000)
<S>                                                 <C>         <C>
- ------------------------------------------------------------
TOTAL INVESTMENTS (100.1%) (Cost $45,806).....................     $48,363
                                                                ----------
OTHER ASSETS (4.0%)
  Cash............................................  $        1
  Receivable for Investments Sold.................       1,795
  Dividends Receivable............................         128
  Interest Receivable.............................           2
  Receivable for Portfolio Shares Sold............           1
  Other...........................................           6      1,933
                                                    ----------
LIABILITIES (-4.1%)
  Payable for Investments Purchased...............      (1,865)
  Investment Advisory Fees Payable................         (62)
  Administrative Fees Payable.....................          (7)
  Custodian Fees Payable..........................          (5)
  Distribution Fees Payable.......................          (3)
  Directors' Fees and Expenses Payable............          (1)
  Other Liabilities...............................         (22)    (1,965 )
                                                    ----------  ----------
NET ASSETS (100%).............................................     $48,331
                                                                ----------
                                                                ----------
NET ASSETS CONSIST OF:
Paid in Capital...............................................  $  38,417
Undistributed Net Investment Income...........................        159
Accumulated Net Realized Gain.................................      7,198
Unrealized Appreciation on Investments........................      2,557
                                                                ----------
NET ASSETS....................................................     $48,331
                                                                ----------
                                                                ----------
</TABLE>
<TABLE>
<CAPTION>
CLASS A:
- ---------------------------------------------------
<S>                                                  <C>
NET ASSETS.........................................  $  42,760
NET ASSET VALUE, OFFERING AND REDEMPTION
  PRICE PER SHARE
  Applicable to 2,874,684 outstanding $0.001 par
  value shares (authorized 500,000,000 shares).....     $14.87
                                                     ---------
                                                     ---------
 
<CAPTION>
CLASS B:
- ---------------------------------------------------
<S>                                                  <C>
NET ASSETS.........................................     $5,571
NET ASSET VALUE, OFFERING AND REDEMPTION
  PRICE PER SHARE
  Applicable to 374,812 outstanding $0.001 par
  value shares (authorized 500,000,000 shares).....     $14.86
                                                     ---------
                                                     ---------
</TABLE>
 
- ------------------------------------------------------------
 
<TABLE>
<S>        <C>        <C>
(a)           --      Non-income producing security
</TABLE>
 
The accompanying notes are an integral part of the financial statements. (Pages
                                    182-188)
 
- --------------------------------------------------------------------------------
Aggressive Equity Portfolio
 
                                       76
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
 
OVERVIEW
- --------------------------------------------------------------------------------
 
THE EMERGING GROWTH PORTFOLIO
 
COMPOSITION OF NET ASSETS (AT JUNE 30, 1996)
 
EDGAR REPRESENTATION OF DATA POINTS USED IN PRINTED GRAPHIC
 
<TABLE>
<S>                         <C>
Capital Goods-Construction       1.1%
Consumer Cyclical               23.3%
Consumer Staples                29.0%
Finance                          2.4%
Services                        33.3%
Technology                       7.9%
Other                            3.0%
</TABLE>
 
PERFORMANCE COMPARED TO THE NASDAQ
COMPOSITE INDEX(1)
- -----------------------------------
 
<TABLE>
<CAPTION>
                                           TOTAL RETURNS(2)
                         -----------------------------------------------------
                                                                    AVERAGE
                                                      AVERAGE        ANNUAL
                                                      ANNUAL         SINCE
                            YTD        ONE YEAR     FIVE YEARS     INCEPTION
                         ----------  ------------  -------------  ------------
<S>                      <C>         <C>           <C>            <C>
PORTFOLIO -- CLASS A...       7.07%       26.15%        11.44%         13.46%
PORTFOLIO -- CLASS
B(3)...................       7.03          N/A           N/A            N/A
INDEX..................      12.63        26.95         20.02          15.42
 
<FN>
 
1. The NASDAQ Composite Index is an unmanaged index of common stocks.
 
2. Total returns for the Portfolio reflect expenses waived and reimbursed, if
   applicable, by the Adviser. Without such waiver and reimbursement, total
   returns would be lower.
 
3. The Portfolio began offering Class B shares on January 2, 1996.
</TABLE>
 
PAST PERFORMANCE IS NOT PREDICTIVE OF FUTURE PERFORMANCE.
 
- ------------------------------------------------------------
 
THE PERFORMANCE RESULTS PROVIDED ARE FOR INFORMATIONAL PURPOSES ONLY AND SHOULD
NOT BE CONSTRUED AS A GUARANTEE OF THE PORTFOLIO'S FUTURE PERFORMANCE. PAST
PERFORMANCE SHOWN IS NOT PREDICTIVE OF FUTURE PERFORMANCE. INVESTMENT RETURN AND
PRINCIPAL VALUE WILL FLUCTUATE SO THAT AN INVESTOR'S SHARES, WHEN REDEEMED, MAY
BE WORTH MORE OR LESS THAN THEIR ORIGINAL COST.
 
The Emerging Growth Portfolio invests primarily in growth-oriented equity
securities of small-to-medium sized domestic corporations and, to a limited
extent, foreign corporations. Such companies generally have gross revenues
ranging from $10 million to $750 million.
 
For the six month period ended June 30, 1996, the Portfolio had a total return
of 7.07% for the Class A shares and 7.03% for the Class B shares, as compared to
a total return of 12.63% for the NASDAQ Composite Index. The average annual
total return for the twelve month and five year periods ended June 30, 1996 and
for the period from inception on November 1, 1989 through June 30, 1996 was
26.15%, 11.44% and 13.46%, respectively, for the Class A shares, as compared to
26.95%, 20.02% and 15.42%, respectively, for the Index.
 
The first half of 1996 saw increased volatility in the small growth company
sector of the market. The year started with a sharp decline in January, followed
by a speculation driven rebound in April and May. The second quarter and first
half finished with a meaningful decline in the month of June. Overall, the
Portfolio and the broader market indices recorded positive returns in the second
quarter and first half of 1996. The June quarter was the eighth consecutive
quarter of positive gains in net asset value in the Portfolio, a significantly
long string of increases. The U. S. equity market in general has had a two year
period of uninterrupted stock price appreciation. We hope everyone enjoyed the
steady rise because it is more the exception than the rule in the markets.
 
We believe that looking back, the April - May 1996 period will be seen as a
speculative top for small growth stocks -- at least for a while. It is not
unusual for long periods of rising stock prices to be capped by a speculative
frenzy where investor greed completely overwhelms any fear. All of the classic
signs of a speculative top were present in April and May including:
 
- - A disregard for individual stock valuations with many leading stocks selling
  for an extremely high 20x to 30x times reported revenues and 50x to 100x times
  next year's estimated earnings per share.
 
- - A red-hot market for initial public offerings (IPOs) with the speculative
  focus this time centered on anything related to the Internet. Last time (1991)
  the IPO excesses were in biotechnology.
 
- --------------------------------------------------------------------------------
                                                       Emerging Growth Portfolio
 
                                       77
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
 
OVERVIEW
- --------------------------------------------------------------------------------
THE EMERGING GROWTH PORTFOLIO (CONT.)
 
- - Unprecedented purchases of equity mutual funds with aggressive growth funds
  getting a disproportionate share of the new money inflows in the first half of
  1996.
 
- - Pervasive anecdotal evidence of a top with intense media coverage of the
  market and mutual fund comings and goings.
 
It appears to us that the equity market will be more difficult during the next
six-to-twelve months than it has been for the past two years. While economic
growth is quite strong and expected to remain so well into 1997, there are
important signals that inflation and interest rates have bottomed and that the
next series of moves by the Federal Reserve will be to raise interest rates. We
believe that such an environment is likely to halt the market's rise and produce
the first meaningful correction in U.S. stock prices since the bottom in 1990.
There are already indications that the speculative excesses of the Spring months
are being reined-in and we expect the healthy correction in small growth stocks
will continue and bring more investment rationality back to the overvalued
sectors within the small growth company universe.
 
The Emerging Growth Portfolio has been structured relatively conservatively
during the first half of 1996 by minimizing holdings in the extremely high P/E
small growth stocks and avoiding such speculative areas as many Internet-related
companies. The result was the Portfolio significantly outperformed the small
capitalization benchmarks in the down market months of January and June, but
underperformed during the speculative frenzy in the months of April and May. We
believe the Portfolio is positioned to outperform on a relative basis in the
more difficult market environment we see ahead for the next several months. Cash
levels in the Portfolio have not been raised beyond normal levels, but the
holdings are focused on more risk-adverse companies that should perform
relatively well in a less buoyant market. The Portfolio is currently
underweighted in technology and overweighted in relatively stable
business/consumer service companies. While a meaningful correction is overdue,
we remain positive on the longer term opportunities in emerging growth stocks.
 
During the second quarter of 1996, the Portfolio acquired new positions in 25
stocks and eliminated holdings in four companies. A large weighting in several
semiconductor stocks was eliminated in the first half of the year, which
substantially reduced the Portfolio's technology sector exposure. Some of the
new investments include:
 
ADC TELECOMMUNICATIONS -- manufactures transmission, networking and broadband
connectivity products for the telecommunications industry.
 
BOSTON SCIENTIFIC -- manufactures and markets medical devices used by physicians
for less invasive medical procedures.
 
HCIA -- develops and markets integrated clinical and financial information to
health care providers, payors, and suppliers.
 
LA QUINTA INNS -- owns and operates moderately priced inns in 29 states
concentrated in the western and southern regions of the country.
 
MSC INDUSTRIAL DIRECT -- distributes a broad range of industrial products to
small and mid-sized businesses.
 
MAY & SPEH -- provides computer-based information management services for
clients with significant direct marketing activities.
 
ROBERT HALF INTERNATIONAL -- is a leading provider of personnel services for
accounting, information technology, and administrative support throughout the
United States.
 
STERLING COMMERCE -- develops and markets electronic commerce software and
provides electronic data interchange (EDI) network services.
 
USCS INTERNATIONAL -- provides customer software and billing services to the
cable TV and telecommunications industries.
 
UNITED WASTE SYSTEMS -- provides integrated solid waste management services and
landfill operations for commercial and industrial customers in several states.
 
WHITTMAN HART -- provides information technology services including systems
integration, strategic IT planning, software development, and business process
reengineering for medium-size companies.
 
At June 30, the Portfolio was diversified among 70 stocks with the top ten
holdings representing 33.4% of net assets.
 
- --------------------------------------------------------------------------------
Emerging Growth Portfolio
 
                                       78
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
 
OVERVIEW
- --------------------------------------------------------------------------------
THE EMERGING GROWTH PORTFOLIO (CONT.)
 
                                TOP TEN HOLDINGS
 
<TABLE>
<CAPTION>
                                                        % OF
COMPANY                                                ASSETS
- ---------------------------------------------------  -----------
<S>                                                  <C>
SunGard Data System................................        3.9%
First Data Corp....................................        3.9
Cintas Corp........................................        3.6
HealthSouth Rehabilitation.........................        3.5
CUC International..................................        3.5
Vivra Inc..........................................        3.2
Concord EFS........................................        3.1
Viking Office Products.............................        3.1
Health Management Systems..........................        2.8
G&K Services.......................................        2.8
                                                           ---
Total..............................................       33.4%
                                                           ---
                                                           ---
</TABLE>
 
Dennis G. Sherva
PORTFOLIO MANAGER
 
July 1996
 
- --------------------------------------------------------------------------------
                                                       Emerging Growth Portfolio
 
                                       79
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
STATEMENT OF NET ASSETS (UNAUDITED)
JUNE 30, 1996
- --------------------------------------------------------------------------------
 
THE EMERGING GROWTH PORTFOLIO
 
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>
                                                                  VALUE
  SHARES                                                          (000)
- ------------------------------------------------------------
<C>         <S>                                                 <C>
COMMON STOCKS (97.0%)
  CAPITAL GOODS-CONSTRUCTION (1.1%)
    ENVIRONMENTAL CONTROLS (1.1%)
  (a)5,100  Sanifill, Inc.....................................  $      251
 (a)25,400  United Waste Systems, Inc.........................         819
                                                                ----------
  TOTAL CAPITAL GOODS-CONSTRUCTION............................       1,070
                                                                ----------
  CONSUMER-CYCLICAL (23.3%)
    ENTERTAINMENT & LEISURE (0.2%)
 (a)20,700  Moovies, Inc......................................         163
                                                                ----------
    FOOD SERVICE & LODGING (9.2%)
 (a)33,900  Boston Chicken, Inc...............................       1,102
 (a)40,000  HFS, Inc..........................................       2,800
    38,500  La Quinta Inns, Inc...............................       1,290
    (a)500  Papa John's International, Inc....................          24
 (a)65,000  Promus Hotel Corp.................................       1,926
 (a)90,000  Sonic Corp........................................       2,182
                                                                ----------
                                                                     9,324
                                                                ----------
    PRINTING & PUBLISHING (2.0%)
    32,500  Lee Enterprises, Inc..............................         768
 (a)20,000  Scholastic Corp...................................       1,240
                                                                ----------
                                                                     2,008
                                                                ----------
    RETAIL-GENERAL (11.6%)
 (a)90,000  Bed, Bath & Beyond, Inc...........................       2,374
 (a)25,900  Central Tractor Farm & Country, Inc...............         317
 (a)50,000  General Nutrition Cos., Inc.......................         875
 (a)60,000  Kohl's Corp.......................................       2,198
    70,000  OfficeMax, Inc....................................       1,671
 (a)19,900  Petco Animal Supplies, Inc........................         572
 (a)35,000  PetSmart, Inc.....................................       1,654
 (a)88,000  Sunglass Hut International, Inc...................       2,134
                                                                ----------
                                                                    11,795
                                                                ----------
    TEXTILES & APPAREL (0.3%)
     8,300  Mossimo, Inc......................................         331
                                                                ----------
  TOTAL CONSUMER-CYCLICAL.....................................      23,621
                                                                ----------
  CONSUMER-STAPLES (29.0%)
    DRUGS (3.8%)
 (a)60,000  Forest Laboratories, Inc..........................       2,317
 (a)20,100  Genzyme Corp.-General Division....................       1,010
 (a)13,000  Scherer (R.P.) Corp...............................         590
                                                                ----------
                                                                     3,917
                                                                ----------
    HEALTH CARE SUPPLIES & SERVICES (20.0%)
 (a)60,000  American Oncology Resources, Inc..................       1,305
    30,000  Arrow International, Inc..........................         810
     5,900  Arterial Vascular Engineering, Inc................         214
    55,000  Ballard Medical Products..........................       1,052
 (a)50,000  Biomet, Inc.......................................         706
 (a)31,500  Boston Scientific Corp............................       1,418
 (a)90,000  Health Management Systems, Inc....................       2,858
 (a)90,000  Healthsource, Inc.................................       1,575
 
<CAPTION>
                                                                  VALUE
  SHARES                                                          (000)
- ------------------------------------------------------------
<C>         <S>                                                 <C>
(a)100,000  HEALTHSOUTH Rehabilitation Corp...................  $    3,600
  (a)6,400  Mariner Health Group, Inc.........................         118
 (a)31,300  OccuSystems, Inc..................................       1,170
 (a)75,000  Research Medical, Inc.............................       1,659
 (a)12,100  Target Therapeutics, Inc..........................         496
(a)100,000  Vivra, Inc........................................       3,287
                                                                ----------
                                                                    20,268
                                                                ----------
    MISCELLANEOUS (5.2%)
 (a)50,000  IDEXX Laboratories, Inc...........................       1,963
  (a)8,400  Mail Boxes Etc....................................         192
(a)100,000  Viking Office Products, Inc.......................       3,125
                                                                ----------
                                                                     5,280
                                                                ----------
  TOTAL CONSUMER-STAPLES......................................      29,465
                                                                ----------
  FINANCE (2.4%)
    INSURANCE (2.4%)
     9,700  Meadowbrook Insurance Group, Inc..................         298
    50,000  Mutual Risk Management Ltd........................       1,562
    17,200  NAC Re Corp.......................................         576
                                                                ----------
  TOTAL FINANCE...............................................       2,436
                                                                ----------
  SERVICES (33.3%)
    BUSINESS SERVICES (15.4%)
 (a)55,000  BISYS Group, Inc..................................       2,076
 (a)90,000  Concord EFS, Inc..................................       3,195
    50,000  First Data Corp...................................       3,981
    11,500  First USA Paymentech, Inc.........................         460
    69,100  May & Speh, Inc...................................       1,088
     2,850  Paychex, Inc......................................         137
(a)100,000  SunGard Data Systems, Inc.........................       4,000
    19,000  Whittman-Hart, Inc................................         684
                                                                ----------
                                                                    15,621
                                                                ----------
    PROFESSIONAL SERVICES (17.9%)
 (a)44,900  American Medical Response, Inc....................       1,583
    70,000  Cintas Corp.......................................       3,693
 (a)50,000  CRA Managed Care, Inc.............................       2,238
(a)100,000  CUC International, Inc............................       3,550
   100,000  G & K Services, Inc., Class A.....................       2,850
 (a)34,300  MSC Industrial Direct Co., Inc., Class A..........       1,106
  (a)5,600  NFO Research, Inc.................................         132
 (a)45,000  Robert Half International, Inc....................       1,254
 (a)27,000  Sitel Corp........................................       1,121
    26,000  Wilmar Industries, Inc............................         650
                                                                ----------
                                                                    18,177
                                                                ----------
  TOTAL SERVICES..............................................      33,798
                                                                ----------
  TECHNOLOGY (7.9%)
    ELECTRONICS (1.2%)
 (a)10,000  Fusion Systems Corp...............................         247
    35,000  Molex, Inc., Class A..............................       1,028
                                                                ----------
                                                                     1,275
                                                                ----------
</TABLE>
 
The accompanying notes are an integral part of the financial statements. (Pages
                                    182-188)
 
- --------------------------------------------------------------------------------
Emerging Growth Portfolio
 
                                       80
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
STATEMENT OF NET ASSETS (UNAUDITED)
JUNE 30, 1996
- --------------------------------------------------------------------------------
 
THE EMERGING GROWTH PORTFOLIO (CONT.)
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>
                                                                  VALUE
  SHARES                                                          (000)
- ------------------------------------------------------------
<C>         <S>                                                 <C>
</TABLE>
 
  TECHNOLOGY (CONT.)
<TABLE>
<C>         <S>                                                 <C>
    SOFTWARE SERVICES (4.4%)
 (a)10,600  HCIA, Inc.........................................  $      668
 (a)69,500  Informix Corp.....................................       1,564
    44,000  Sterling Commerce, Inc............................       1,634
  (a)1,000  Transaction Systems Architects, Inc., Class A.....          67
 (a)25,700  USCS International, Inc...........................         495
                                                                ----------
                                                                     4,428
                                                                ----------
    TELECOMMUNICATIONS (2.3%)
 (a)29,900  ADC Telecommunications, Inc.......................       1,345
 (a)68,000  Mobile Telecommunications Technologies Corp.......         986
                                                                ----------
                                                                     2,331
                                                                ----------
  TOTAL TECHNOLOGY............................................       8,034
                                                                ----------
TOTAL COMMON STOCKS (Cost $58,032)............................      98,424
                                                                ----------
<CAPTION>
 
   FACE
  AMOUNT
  (000)
- ----------
<C>         <S>                                                 <C>
SHORT-TERM INVESTMENT (3.6%)
  REPURCHASE AGREEMENT (3.6%)
$     3,635 Chase Securities, Inc. 5.15%, dated 6/28/96, due
              7/01/96, to be repurchased at $3,637,
              collateralized by $3,575 U.S. Treasury Notes,
              7.125%, due 9/30/99, valued at $3,655 (Cost
              $3,635).........................................       3,635
                                                                ----------
<CAPTION>
                                                                     VALUE
                                                                     (000)
<C>         <S>                                                 <C>
- ------------------------------------------------------------
 
TOTAL INVESTMENTS (100.6%) (Cost $61,667).....................    $102,059
                                                                ----------
</TABLE>
 
<TABLE>
<S>                                                 <C>         <C>
OTHER ASSETS (0.6%)
  Receivable for Investments Sold.................  $      607
  Dividends Receivable............................           7
  Interest Receivable.............................           2
  Other...........................................          13         629
                                                         -----
LIABILITIES (-1.2%)
  Payable for Investments Purchased...............        (804)
  Investment Advisory Fees Payable................        (261)
  Payable for Portfolio Shares Redeemed...........         (67)
  Administrative Fees Payable.....................         (15)
  Custodian Fees Payable..........................          (7)
  Distribution Fees Payable.......................          (3)
  Directors' Fees and Expenses Payable............          (2)
  Other Liabilities...............................         (33)     (1,192)
                                                         -----  ----------
NET ASSETS (100%).............................................    $101,496
                                                                ----------
                                                                ----------
NET ASSETS CONSIST OF:
Paid in Capital...............................................  $   40,641
Accumulated Net Investment Loss...............................        (522)
Accumulated Net Realized Gain.................................      20,985
Unrealized Appreciation on Investments........................      40,392
                                                                ----------
NET ASSETS....................................................    $101,496
                                                                ----------
                                                                ----------
</TABLE>
 
<TABLE>
<C>         <S>                                                 <C>
CLASS A:
NET ASSETS....................................................     $96,512
NET ASSET VALUE, OFFERING AND REDEMPTION
  PRICE PER SHARE
  Applicable to 4,194,648 outstanding $0.001 par value shares
  (authorized 500,000,000 shares).............................      $23.01
                                                                ----------
                                                                ----------
CLASS B:
NET ASSETS....................................................      $4,984
NET ASSET VALUE, OFFERING AND REDEMPTION
  PRICE PER SHARE
  Applicable to 216,867 outstanding $0.001 par value shares
  (authorized 500,000,000 shares).............................      $22.98
                                                                ----------
                                                                ----------
</TABLE>
 
- ------------------------------------------------------------
 
<TABLE>
<S>        <C>        <C>
(a)           --      Non-income producing security
</TABLE>
 
The accompanying notes are an integral part of the financial statements. (Pages
                                    182-188)
 
- --------------------------------------------------------------------------------
                                                       Emerging Growth Portfolio
 
                                       81
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
 
OVERVIEW
- --------------------------------------------------------------------------------
 
THE EQUITY GROWTH PORTFOLIO
 
COMPOSITION OF NET ASSETS (AT JUNE 30, 1996)
 
EDGAR REPRESENTATION OF DATA POINTS USED IN PRINTED GRAPHIC
 
<TABLE>
<S>                         <C>
Capital Goods-Construction       9.0%
Consumer-Cyclical               23.9%
Consumer-Staples                22.5%
Diversified                      4.0%
Energy                           0.7%
Finance                         19.8%
Materials                        3.2%
Services                         2.6%
Technology                       6.8%
Other                            7.5%
</TABLE>
 
PERFORMANCE COMPARED TO THE S&P 500 INDEX(1)
- -----------------------------------------
 
<TABLE>
<CAPTION>
                                 TOTAL RETURNS(2)
                      ---------------------------------------
                                                   AVERAGE
                                                 ANNUAL FIVE    AVERAGE ANNUAL
                         YTD        ONE YEAR        YEARS       SINCE INCEPTION
                      ----------  ------------  -------------  -----------------
<S>                   <C>         <C>           <C>            <C>
PORTFOLIO -- CLASS
A...................      16.64%       37.47%        16.84%           16.25%
PORTFOLIO -- CLASS
B(3)................      15.91          N/A           N/A              N/A
S&P 500.............      10.09        25.98         15.71            15.06
 
<FN>
 
1. The S&P 500 Index is an unmanaged index of common stocks.
 
2. Total returns for the Portfolio reflect expenses waived and reimbursed, if
   applicable, by the Adviser. Without such waiver and reimbursement, total
   returns would be lower.
 
3. The Portfolio began offering Class B shares on January 2, 1996.
</TABLE>
 
PAST PERFORMANCE IS NOT PREDICTIVE OF FUTURE PERFORMANCE.
 
- ------------------------------------------------------------
 
THE PERFORMANCE RESULTS PROVIDED ARE FOR INFORMATIONAL PURPOSES ONLY AND SHOULD
NOT BE CONSTRUED AS A GUARANTEE OF THE PORTFOLIO'S FUTURE PERFORMANCE. PAST
PERFORMANCE SHOWN IS NOT PREDICTIVE OF FUTURE PERFORMANCE. INVESTMENT RETURN AND
PRINCIPAL VALUE WILL FLUCTUATE SO THAT AN INVESTOR'S SHARES, WHEN REDEEMED, MAY
BE WORTH MORE OR LESS THAN THEIR ORIGINAL COST.
 
The Equity Growth Portfolio employs a growth-oriented investment strategy
seeking long-term capital appreciation. The Portfolio seeks to accomplish its
objective by investing primarily in equities of medium and large capitalization
companies exhibiting sustainable earnings growth.
 
For the six month period ended June 30, 1996, the Portfolio had a total return
of 16.64% for the Class A shares and 15.91% for the Class B shares, as compared
to a total return of 10.09% for the S&P 500 Index. The average annual total
return for the twelve month and five year periods ended June 30, 1996 and for
the period from inception on April 2, 1991 through June 30, 1996 was 37.47%,
16.84% and 16.25%, respectively, for the Class A shares, as compared to 25.98%,
15.71% and 15.06%, respectively, for the Index.
 
The Portfolio uses an investment strategy that stresses intensive analysis of
business and company trends. Through exhaustive research and communication with
Wall Street sources and company contacts, the Equity Growth team identifies
stocks of generally high quality companies that have strong prospects and may
produce positive surprises vis-a-vis consensus expectations. The companies we
own fall into one of three categories: blue chip, high quality growth companies;
higher beta stocks of companies where we believe the chances for positive
surprise are substantial; and stocks that have declined due to investor concerns
that we believe are unfounded.
 
A crucial principal of our investment approach is to concentrate positions
opportunistically. The Portfolio may put as much as 10% of assets in one
position. At June 30, the largest holding (Philip Morris) accounted for about 7%
of net assets. Twice during 1996 to date, though, the Portfolio had up to 10% in
a position. Both times we felt very strongly that the market was undervaluing
the stock of a company that we knew well. First, back in January, the market was
punishing banks and other financial stocks on fears of rising consumer loan
delinquencies. Wells Fargo, which started the year at around $216, was being
doubly punished on fears that the company would overpay in its battle with First
Bank System to acquire First Interstate. We had owned Wells Fargo for several
years, had done very well with the stock, and we were convinced management was
very shareholder oriented and was unlikely to overpay. At one point, with the
overall market up, Wells Fargo got down close to $200. We did more work as the
stock went down and put close to 10% of net assets in a combination of the
stocks of Wells Fargo and First Interstate (as an arbitrage). Wells Fargo stock
surged to a high of $267
 
- --------------------------------------------------------------------------------
Equity Growth Portfolio
 
                                       82
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
 
OVERVIEW
- --------------------------------------------------------------------------------
THE EQUITY GROWTH PORTFOLIO (CONT.)
in April. We subsequently cut the position to about 4% of net assets, still a
big holding but not the huge bet we had made before.
 
We also took Philip Morris up to 10% earlier in the year and kept it there until
June, when we took some profits. Philip Morris has actually been our largest
holding for much of the past 2 1/2 years. As with Wells Fargo, we know Philip
Morris extremely well, and the stock has treated us well. In 1995, for example,
Philip Morris stock was up 57%, and dividends added about 4% to returns. But the
stock still looked extremely attractive to us as 1996 began, trading at only
11.8 times forward projected earnings, yielding more than double the S&P 500 and
growing 15-20% annually. Business at Philip Morris is outstanding, but in April
the stock got knocked down into the mid-80s, on the usual round of investor
concerns over legal and political issues. We feel those concerns are old news
and more than priced into the stock. For example, Philip Morris trades at less
than half of Coca Cola's P/E multiple, with more or less the same growth rate.
In any event, we loaded up south of $90 and cut back a bit near the June peak of
$107.
 
Most professional investors believe in diversification; and we do as well. But
on those occasions when conviction is very high, it can be costly not to
concentrate and take advantage of market opportunities.
 
As we have cut back on our largest holding, the proceeds have gone into another
tobacco stock, RJR Nabisco. Whereas Philip Morris stock has doubled since the
beginning of 1994, RJR stock has been a tremendous underperformer, down about
3.5% over the same period against an S&P 500 rise of about 39.4%. In 1994 and
1995, the stock price weakness made sense to us, reflecting weak business trends
and declining consensus earnings estimates. But trends have improved, and
estimates actually rose after the company reported March quarter results. Yet
the stock remains in the dog house. It is flat this year despite the improving
trends and despite a 23% dividend hike in March. The dividend yield is now 6.1%
and we expect the dividend to rise another 15-20% next March. Moreover, free
cash flow per share is a whopping $4.20 and this should grow at a double-digit
annual rate. Finally, when you buy RJR at $30.50 per share, you get $22 per
share of Nabisco, which trades publicly and of which RJR owns 213 million
shares. A spin-off of RJR's Nabisco stake is a potential kicker, but in our view
not necessary for the stock to be a big performer.
 
As we ended the June quarter, we had approximately 7% of net assets in cash and
we brought this down in the difficult market environment of July. Barring a
sharp rise in interest rates, we believe the environment for growth stocks
remains favorable. In particular, we are beginning to see some very good value
in higher beta growth stocks, which as a group have been very weak since the
beginning of June. Some of the largest high-beta positions in the portfolio
include HFS, Boston Chicken, ITT, GTech, Heftel Broadcasting, and PetSmart.
 
Two groups that continue to represent a big part of the Portfolio are financial
services and multi-industry conglomerates. In our view, many financial service
companies look like stable growers, yet investors continue to sell the stocks
when rates rise or when consumer debt delinquencies rise. In addition to Wells
Fargo, we own sizable positions in American Express, Sallie Mae, Citicorp, CMAC,
Cigna and Ace. American Express, for example, trades at only 12 times estimated
earnings with a growth rate, we believe, of 14-16%. CMAC, a private mortgage
insurer, trades at 11 times with an 18-20% growth rate.
 
United Technologies remains our largest multi-industry holding and is our third
largest holding overall at June 30. This stock has done very well for us in 1995
and 1996, yet we think it still looks compelling. Big surplus cash flow
generation has allowed the company to make value added acquisitions, joint
ventures and share repurchases. We also own Allied Signal where the divestiture
of the underperforming brake business improves the likelihood of the company
generating consistent growth and funds cost cutting initiatives elsewhere.
 
Kurt Feuerman
PORTFOLIO MANAGER
July 1996
 
- --------------------------------------------------------------------------------
                                                         Equity Growth Portfolio
 
                                       83
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
STATEMENT OF NET ASSETS (UNAUDITED)
JUNE 30, 1996
- --------------------------------------------------------------------------------
 
THE EQUITY GROWTH PORTFOLIO
 
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>
                                                                  VALUE
  SHARES                                                          (000)
<C>         <S>                                                 <C>
- ------------------------------------------------------------
COMMON STOCKS (92.5%)
  CAPITAL GOODS-CONSTRUCTION (9.0%)
    AEROSPACE & DEFENSE (7.7%)
    19,600  Boeing Co.........................................  $    1,708
    18,100  General Dynamics Corp.............................       1,122
    42,700  McDonnell Douglas Corp............................       2,071
    22,800  Rockwell International Corp.......................       1,305
 (a)20,400  Rohr, Inc.........................................         426
    70,700  United Technologies Corp..........................       8,131
                                                                ----------
                                                                    14,763
                                                                ----------
    BUILDING & CONSTRUCTION (0.4%)
 (a)35,900  AMRE, Inc.........................................         785
                                                                ----------
    ELECTRICAL EQUIPMENT (0.5%)
    11,200  Emerson Electric Co...............................       1,012
                                                                ----------
    ENVIRONMENTAL CONTROLS (0.4%)
    22,200  WMX Technologies, Inc.............................         727
                                                                ----------
  TOTAL CAPITAL GOODS-CONSTRUCTION............................      17,287
                                                                ----------
  CONSUMER-CYCLICAL (23.9%)
    AUTOMOTIVE (0.8%)
    31,400  Goodyear Tire & Rubber Co.........................       1,515
                                                                ----------
    BROADCAST-RADIO & TELEVISION (2.0%)
 (a)48,700  Heftel Broadcasting Corp., Class A................       1,443
 (a)31,900  Infinity Broadcasting, Class A....................         957
 (a)49,200  New World Communications Group, Inc...............         719
 (a)20,700  Viacom, Inc., Class B.............................         805
                                                                ----------
                                                                     3,924
                                                                ----------
    ENTERTAINMENT & LEISURE (2.9%)
 (a)34,400  AMC Entertainment, Inc............................         959
(a)103,000  GTECH Holdings Corp...............................       3,051
    25,800  Walt Disney Co....................................       1,622
                                                                ----------
                                                                     5,632
                                                                ----------
    FOOD SERVICE (3.5%)
(a)153,700  Boston Chicken, Inc...............................       4,995
 (a)45,500  Brinker International, Inc........................         682
 (a)54,100  Foodmaker, Inc....................................         467
 (a)19,300  Planet Hollywood International, Inc., Class A.....         521
                                                                ----------
                                                                     6,665
                                                                ----------
    GAMING & LODGING (7.3%)
 (a)82,600  HFS, Inc..........................................       5,782
    12,900  Hilton Hotels Corp................................       1,451
    41,800  International Game Technology.....................         705
 (a)54,500  ITT Corp..........................................       3,611
    71,800  La Quinta Inns, Inc...............................       2,405
                                                                ----------
                                                                    13,954
                                                                ----------
    HOUSEHOLD FURNISHINGS & APPLIANCES (0.5%)
 (a)14,100  American Standard Cos.............................         465
     8,000  Premark International, Inc........................         148
  (a)8,000  Tupperware Corp...................................         338
                                                                ----------
                                                                       951
                                                                ----------
 
<CAPTION>
                                                                  VALUE
  SHARES                                                          (000)
<C>         <S>                                                 <C>
- ------------------------------------------------------------
    PHOTOGRAPHY & OPTICAL (1.1%)
    25,700  Eastman Kodak Co..................................  $    1,998
     7,100  PCA International, Inc............................         119
                                                                ----------
                                                                     2,117
                                                                ----------
    PUBLISHING (3.3%)
    14,300  Gannett Co., Inc.                                        1,012
(a)233,600  K-III Communications Corp.........................       2,920
    65,400  News Corp. Ltd., ADR..............................       1,537
    19,600  New York Times Co., Class A.......................         639
 (a)13,600  Valassis Communications, Inc......................         252
                                                                ----------
                                                                     6,360
                                                                ----------
    RETAIL-GENERAL (2.5%)
 (a)39,800  AutoZone, Inc.....................................       1,383
 (a)39,300  General Nutrition Cos., Inc.......................         688
    22,800  Harcourt General, Inc.............................       1,140
 (a)33,300  PetSmart, Inc.....................................       1,590
                                                                ----------
                                                                     4,801
                                                                ----------
  TOTAL CONSUMER-CYCLICAL.....................................      45,919
                                                                ----------
  CONSUMER-STAPLES (22.5%)
    BEVERAGES (2.5%)
    82,300  Coca Cola Enterprises, Inc........................       2,850
    55,600  PepsiCo, Inc......................................       1,967
                                                                ----------
                                                                     4,817
                                                                ----------
    DRUGS (3.2%)
    34,000  American Home Products Corp.......................       2,044
  (a)9,700  Amgen, Inc........................................         524
    15,300  Pfizer, Inc.......................................       1,092
    39,300  Schering-Plough Corp..............................       2,466
                                                                ----------
                                                                     6,126
                                                                ----------
    FOOD (1.9%)
    37,900  Interstate Bakeries Corp..........................       1,014
    23,100  Kellogg Co........................................       1,692
    15,400  Ralston Purina Group..............................         988
                                                                ----------
                                                                     3,694
                                                                ----------
    HEALTH CARE SUPPLIES & SERVICES (2.2%)
    19,000  Aetna Life & Casualty Co..........................       1,359
    23,800  Columbia/HCA Healthcare Corp......................       1,270
 (a)10,400  PacifiCare Health Systems, Inc., Class B..........         705
    17,900  United Healthcare Corp............................         904
                                                                ----------
                                                                     4,238
                                                                ----------
    HOSPITAL SUPPLIES & SERVICES (0.6%)
    14,000  Becton Dickinson & Co.............................       1,124
                                                                ----------
    TOBACCO (12.1%)
   132,800  Philip Morris Cos., Inc...........................      13,811
   301,800  RJR Nabisco Holdings Corp.........................       9,356
                                                                ----------
                                                                    23,167
                                                                ----------
  TOTAL CONSUMER-STAPLES......................................      43,166
                                                                ----------
  DIVERSIFIED (4.0%)
    36,100  AlliedSignal, Inc.................................       2,062
    71,100  Loews Corp........................................       5,608
                                                                ----------
  TOTAL DIVERSIFIED...........................................       7,670
                                                                ----------
</TABLE>
 
The accompanying notes are an integral part of the financial statements. (Pages
                                    182-188)
 
- --------------------------------------------------------------------------------
Equity Growth Portfolio
 
                                       84
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
STATEMENT OF NET ASSETS (UNAUDITED)
JUNE 30, 1996
- --------------------------------------------------------------------------------
 
THE EQUITY GROWTH PORTFOLIO (CONT.)
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>
                                                                  VALUE
  SHARES                                                          (000)
- ------------------------------------------------------------
<C>         <S>                                                 <C>
  ENERGY (0.7%)
    COAL, GAS, & OIL (0.7%)
    11,900  Baker Hughes, Inc.................................  $      391
    11,200  Schlumberger Ltd..................................         944
                                                                ----------
  TOTAL ENERGY................................................       1,335
                                                                ----------
  FINANCE (19.8%)
    BANKING (6.5%)
    23,568  Chase Manhattan Corp..............................       1,664
    19,600  Citicorp..........................................       1,619
    15,500  Morgan (J.P.) & Co., Inc..........................       1,312
    33,033  Wells Fargo & Co..................................       7,891
                                                                ----------
                                                                    12,486
                                                                ----------
    FINANCIAL SERVICES (7.1%)
   119,500  American Express Co...............................       5,333
 (a)12,800  Associates First Capital Corp.....................         482
    22,600  CIGNA Corp........................................       2,664
    21,200  Dean Witter Discover & Co.........................       1,214
    28,100  Franklin Resources, Inc...........................       1,714
    28,000  Student Loan Marketing Association................       2,072
                                                                ----------
                                                                    13,479
                                                                ----------
    INSURANCE (5.8%)
    38,700  Ace Ltd...........................................       1,819
    87,100  CMAC Investment Corp..............................       5,008
    16,300  Exel Ltd..........................................       1,149
     6,700  MGIC Investment Corp..............................         376
    28,800  PartnerRe Ltd.....................................         860
    37,100  PMI Group (The), Inc..............................       1,577
     9,800  RenaissanceRe Holdings............................         301
                                                                ----------
                                                                    11,090
                                                                ----------
    REAL ESTATE (0.4%)
 (a)29,500  Insignia Financial Group, Inc., Class A...........         800
                                                                ----------
  TOTAL FINANCE...............................................      37,855
                                                                ----------
  MATERIALS (3.2%)
    CHEMICALS (3.2%)
    23,800  Hercules, Inc.....................................       1,315
    18,000  IMC Global, Inc...................................         677
    50,400  Monsanto Co.......................................       1,638
    17,100  Olin Corp.........................................       1,526
    15,400  Potash Corp. of Saskatchewan, Inc.................       1,020
                                                                ----------
  TOTAL MATERIALS.............................................       6,176
                                                                ----------
  SERVICES (2.6%)
    PROFESSIONAL SERVICES (2.1%)
 (a)17,100  Bell & Howell Holding Co..........................         558
 (a)42,850  CUC International, Inc............................       1,521
    (a)900  Catalina Marketing Corp...........................          82
     2,280  First Data Corp...................................       1,815
                                                                ----------
                                                                     3,976
                                                                ----------
    TRANSPORTATION (0.5%)
 (a)10,600  AMR Corp..........................................         965
                                                                ----------
  TOTAL SERVICES..............................................       4,941
                                                                ----------
  TECHNOLOGY (6.8%)
    COMPUTERS (0.5%)
 (a)18,500  Cisco Systems, Inc................................       1,048
                                                                ----------
<CAPTION>
                                                                  VALUE
  SHARES                                                          (000)
<C>         <S>                                                 <C>
- ------------------------------------------------------------
    ELECTRONICS (1.4%)
 (a)17,500  Applied Materials, Inc............................  $      534
    25,900  Intel Corp........................................       1,902
    10,500  Watkins-Johnson Co................................         287
                                                                ----------
                                                                     2,723
                                                                ----------
    OFFICE EQUIPMENT (1.1%)
    10,600  Hewlett Packard Co................................       1,056
    11,200  International Business Machines Corp..............       1,109
                                                                ----------
                                                                     2,165
                                                                ----------
    SOFTWARE SERVICES (1.9%)
  (a)1,100  America Online, Inc...............................          48
 (a)18,300  Microsoft Corp....................................       2,198
 (a)23,500  Oracle System Corp................................         927
 (a)22,750  USCS International, Inc...........................         438
                                                                ----------
                                                                     3,611
                                                                ----------
    TELECOMMUNICATIONS (1.9%)
 (a)28,800  AirTouch Communications, Inc......................         814
    18,400  American Telephone & Telegraph Corp...............       1,141
 (a)50,500  Teleport Communications Group, Inc., Class A......         966
  (a)7,300  U.S. Robotics Corp................................         624
                                                                ----------
                                                                     3,545
                                                                ----------
  TOTAL TECHNOLOGY............................................      13,092
                                                                ----------
TOTAL COMMON STOCKS (Cost $157,468)...........................     177,441
                                                                ----------
<CAPTION>
   FACE
  AMOUNT
  (000)
- ----------
<C>         <S>                                                 <C>
SHORT-TERM INVESTMENT (7.5%)
  REPURCHASE AGREEMENT (7.5%)
$   14,395  Goldman Sachs, 5.375%, dated 6/28/96, due 7/01/96,
              to be repurchased at $14,401, collateralized by
              $14,020 U.S. Treasury Bonds, 7.50%, due
              11/15/16, valued at $14,693 (Cost $14,395)......      14,395
                                                                ----------
TOTAL INVESTMENTS (100.0%) (Cost $171,863)....................     191,836
                                                                ----------
</TABLE>
 
<TABLE>
<S>                                                 <C>         <C>
OTHER ASSETS (2.0%)
  Cash............................................  $        1
  Receivable for Investments Sold.................       3,472
  Dividends Receivable............................         370
  Interest Receivable.............................           6
  Other...........................................          12       3,861
                                                    ----------
LIABILITIES (-2.0%)
  Payable for Investments Purchased...............      (3,630)
  Investment Advisory Fees Payable................        (230)
  Administrative Fees Payable.....................         (24)
  Custodian Fees Payable..........................         (15)
  Payable for Portfolio Shares Redeemed...........          (4)
  Distribution Fees Payable.......................          (3)
  Directors' Fees and Expenses Payable............          (3)
  Other Liabilities...............................         (37)     (3,946)
                                                    ----------  ----------
NET ASSETS (100%).............................................    $191,751
                                                                ----------
                                                                ----------
</TABLE>
 
The accompanying notes are an integral part of the financial statements. (Pages
                                    182-188)
 
- --------------------------------------------------------------------------------
                                                         Equity Growth Portfolio
 
                                       85
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
STATEMENT OF NET ASSETS (UNAUDITED)
JUNE 30, 1996
- --------------------------------------------------------------------------------
 
THE EQUITY GROWTH PORTFOLIO (CONT.)
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>
                                                                  AMOUNT
                                                                  (000)
- ------------------------------------------------------------
<S>                                                 <C>         <C>
NET ASSETS CONSIST OF:
Paid in Capital...............................................  $  139,965
Undistributed Net Investment Income...........................         578
Accumulated Net Realized Gain.................................      31,235
Unrealized Appreciation on Investments........................      19,973
                                                                ----------
NET ASSETS....................................................    $191,751
                                                                ----------
                                                                ----------
</TABLE>
 
<TABLE>
<C>         <S>                                                 <C>
CLASS A:
NET ASSETS....................................................    $186,848
NET ASSET VALUE, OFFERING AND REDEMPTION
  PRICE PER SHARE
  Applicable to 11,362,865 outstanding $0.001 par value shares
  (authorized 500,000,000 shares).............................      $16.44
                                                                ----------
                                                                ----------
CLASS B:
NET ASSETS....................................................      $4,903
NET ASSET VALUE, OFFERING AND REDEMPTION
  PRICE PER SHARE
  Applicable to 298,399 outstanding $0.001 par value shares
  (authorized 500,000,000 shares).............................      $16.43
                                                                ----------
                                                                ----------
</TABLE>
 
- ------------------------------------------------------------
 
<TABLE>
<S>        <C>        <C>
(a)           --      Non-income producing security
ADR           --      American Depositary Receipt
 
</TABLE>
 
The accompanying notes are an integral part of the financial statements. (Pages
                                    182-188)
 
- --------------------------------------------------------------------------------
Equity Growth Portfolio
 
                                       86
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
 
OVERVIEW
- --------------------------------------------------------------------------------
 
THE SMALL CAP VALUE EQUITY PORTFOLIO
 
COMPOSITION OF NET ASSETS (AT JUNE 30, 1996)
 
EDGAR REPRESENTATION OF DATA POINTS USED IN PRINTED GRAPHIC
 
<TABLE>
<S>                    <C>
Aerospace                   1.9%
Banking                    11.4%
Building                    3.0%
Capital Goods               4.5%
Chemicals                   4.3%
Communications              0.4%
Consumer - Durables         4.2%
Consumer - Retail           5.3%
Consumer - Staples          3.7%
Energy                      3.5%
Financial -
Diversified                 5.5%
Health Care                 6.6%
Industrial                  4.4%
Insurance                   6.3%
Metals                      2.3%
Paper & Packaging           2.1%
Services                   10.4%
Technology                  8.9%
Transportation              2.2%
Utilities                   7.3%
Other                       1.8%
</TABLE>
 
PERFORMANCE COMPARED TO THE RUSSELL 2500
AND S&P 500 INDICES(1)
- --------------------------------------
 
<TABLE>
<CAPTION>
                                       TOTAL RETURNS(2)
                          -------------------------------------------
                                                     AVERAGE ANNUAL
                             YTD        ONE YEAR     SINCE INCEPTION
                          ----------  ------------  -----------------
<S>                       <C>         <C>           <C>
PORTFOLIO -- CLASS A....       9.76%       18.81%          12.83%
PORTFOLIO -- CLASS
B(3)....................       9.31          N/A             N/A
RUSSELL 2500............      10.28        24.16           16.75
S&P 500.................      10.09        25.98           16.05
<FN>
 
1. The Russell 2500 Index and the S&P 500 Index are unmanaged indices of common
   stock.
2. Total returns for the Portfolio reflect expenses waived and reimbursed, if
   applicable, by the Adviser. Without such waiver and reimbursement, total
   returns would be lower.
3. The Portfolio began offering Class B shares on January 2, 1996.
</TABLE>
 
PAST PERFORMANCE IS NOT PREDICTIVE OF FUTURE PERFORMANCE.
 
- ------------------------------------------------------------
 
THE PERFORMANCE RESULTS PROVIDED ARE FOR INFORMATIONAL PURPOSES ONLY AND SHOULD
NOT BE CONSTRUED AS A GUARANTEE OF THE PORTFOLIO'S FUTURE PERFORMANCE. PAST
PERFORMANCE SHOWN IS NOT PREDICTIVE OF FUTURE PERFORMANCE. INVESTMENT RETURN AND
PRINCIPAL VALUE WILL FLUCTUATE SO THAT AN INVESTOR'S SHARES, WHEN REDEEMED, MAY
BE WORTH MORE OR LESS THAN THEIR ORIGINAL COST.
 
The Small Cap Value Equity Portfolio invests in small companies that our
research indicates are undervalued, of high quality, and will reward the
shareholder through high current dividend income. The Portfolio's disciplined
value approach seeks to outperform the Russell 2500 Small Company Index in the
longer term. We believe our emphasis on high quality companies will help the
Portfolio perform particularly well in difficult markets.
 
The Small Cap Value Equity Portfolio selects companies that can be purchased at
bargain prices. Bargains mostly arise as a result of public overreactions to
temporary problems associated with an otherwise healthy company, or because a
company is neglected and currently out-of-the limelight of investors' interest.
Often, these companies operate as major players in very focused markets and are
not widely followed by the investment community.
 
For the six month period ended June 30, 1996, the Portfolio had a total return
of 9.76% for the Class A shares and 9.31% for the Class B shares, as compared to
a total return of 10.28% and 10.09% for the Russell 2500 Index and S&P 500
Index, respectively. The average annual total return for the twelve months ended
June 30, 1996 and for the period from inception on December 17, 1992 through
June 30, 1996 was 18.81% and 12.83%, respectively for the Class A shares, as
compared to 24.16% and 16.75%, respectively, for the Russell 2500 Index and
25.98% and 16.05%, respectively, for the S&P 500 Index.
 
PERFORMANCE REVIEW
 
The consensus economic forecast at the beginning of the year called for a soft
landing and continued slow growth. Soon this forecast came into question as too
conservative as economic data -- despite severe winter weather in large parts of
the country -- indicated a more vigorous U.S. economy. Particularly, strong
employment data and consistently high levels of consumer confidence have pointed
to a stronger economy. Ever fearing a tight labor market and accelerating
inflation, the bond market responded with rising interest rates. The impact on
the Portfolio was mixed.
 
Reflecting stronger consumer confidence, and after being shunned for a long
time, the retail industry staged a strong turnaround and produced excellent
returns for the Portfolio. We took advantage of the high volatility in this
sector and increased turnover in consumer retail stocks. We purchased Stanhome
Inc., a marketer of precious, collectible giftware such as figurines and dolls,
at a low 10x earnings and a dividend yield of 3.7%. Stanhome also operates a
direct selling group in Europe offering consumer
 
- --------------------------------------------------------------------------------
                                                Small Cap Value Equity Portfolio
 
                                       87
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
 
OVERVIEW
- --------------------------------------------------------------------------------
THE SMALL CAP VALUE EQUITY PORTFOLIO (CONT.)
 
products through independent representatives. We expect the company to grow its
earnings substantially in 1996 based on turnaround performance in its direct
marketing division. Other trades in the retail sector include the sale of DEB
Shops and the purchase of Lillian Vernon Corp. Lillian Vernon retails household,
kitchen and garden items through mail order. We purchased the company at close
to its book value. Last year's earnings were penalized by higher catalog paper
costs which we expect to be mostly reversed in 1996.
 
The Portfolio's deeply cyclical companies fundamental earnings outlook improved
significantly in anticipation of stronger economic growth. Paper companies
witnessed some rebound in paper prices and the steel industry showed a modest
recovery from late last year's slowdown. In addition to an accelerating domestic
economic environment, small cap cyclical companies continue to benefit from an
inexpensive U.S. currency and strong product demand from Asia. Although the
fundamental outlook for cyclical companies has improved significantly during the
past six months relative valuations for these companies have become more
attractive. This opened up bargains for the Portfolio's value oriented stock
selection strategy such as Commercial Intertech Corp., an Ohio manufacturer of
hydraulic equipment, water purification products, and metal buildings. We
purchased the company in May at an attractive price of 10 times this year's
expected earnings. In June Commercial Intertech received an unsolicited cash
tender offer by Canadian United Dominion. Following our sell discipline the
Portfolio sold its holding in the company as the price moved up to 15 times
estimated earnings in response to the buyout offer.
 
While expectations of accelerated economic growth was positive for the
Portfolio's cyclical companies, it had a dampening impact on its interest rate
sensitive companies. Particularly, utilities, finance, and insurance companies
suffered from their perceived excess interest rate sensitivity. While the
Russell 2000 Small Company Index advanced almost ten percent during the first
six months of 1996, utility companies trading at the NYSE stood at a standstill
advancing by only 0.5%, and the NASDAQ's insurance index advanced by only 1.6%.
In addition to improving relative valuations we continue to believe in a very
favorable fundamental business outlook for financial companies. Steady loan
growth, favorable net interest margins, continued high asset quality, and
improved efficiencies drive our optimism for that sector. During the second
quarter, we added Susquehanna Bancshares and Astoria Financial Corp. to the
Portfolio's bank holdings. Susquehanna Bancshares (1.2x price-to-book
 
ratio, 4.5% dividend yield) is expanding its banking franchise into the
lucrative Washington D.C. / Baltimore area while still being priced as an
undiscovered Pennsylvania community bank. We purchased Astoria Financial Corp.,
a New York thrift institution, at book value and 9.1 times this year's expected
cash earnings. While Astoria is extremely attractive on valuation alone, we
expect a favorable supervisory goodwill ruling to provide extra upside momentum
for the stock.
 
Domestic small company markets saw extraordinary gains at the beginning of the
second quarter. The driving force behind this strength has been the market's
unquestioned affection for technology stocks. Two months into the second
quarter, growth-oriented small cap issues were leading value-oriented small cap
companies by almost 800 basis points as measured by the Russell 2000 Growth and
Value Indices. June brought a steep reversal of that trend as the small cap
growth advantage shrunk to 160 basis points. The market's fondness for the
technology sector has been put to the test by lower than expected sales and
ensuing inventory overhang, particularly for semiconductors and related
products. Since we believe the sector has been valued fairly richly the
Portfolio was underweight in technology issues and avoided much of the
volatility.
 
As we have stated in the past the Portfolio is designed to outperform small cap
indices in the long term, as well as do so with lower return volatility. In
times of sharp -- almost speculative -- market advances such as we have
witnessed in the first five months of 1996, the Portfolio is expected to provide
strong absolute returns but may not participate fully in speculative rallies.
However, we expect the Portfolio's undervalued, under-researched and dividend
paying companies to outperform small company indices in difficult market
environments.
 
The Small Cap Value Equity Portfolio offers the consistent application of a
disciplined value driven investment process to its shareholders. As such, we
will pursue our search for smaller companies that our research shows are
undervalued, are of high quality and pay above average dividend yield. We
believe these companies will be well positioned to achieve superior total return
for the longer term.
 
Gary D. Haubold
PORTFOLIO MANAGER
 
William B. Gerlach
PORTFOLIO MANAGER
 
July 1996
 
- --------------------------------------------------------------------------------
 
Christian Stadlinger, the portfolio manager of the Portfolio resigned from
Morgan Stanley Asset Management Inc. in August 1996. Gary D. Haubold and William
B. Gerlach have replaced Mr. Stadlinger and now have primary responsibility for
managing the assets of the Portfolio.
 
- --------------------------------------------------------------------------------
Small Cap Value Equity Portfolio
 
                                       88
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
STATEMENT OF NET ASSETS (UNAUDITED)
JUNE 30, 1996
- --------------------------------------------------------------------------------
 
THE SMALL CAP VALUE EQUITY PORTFOLIO
 
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>
                                                                  VALUE
  SHARES                                                          (000)
- ------------------------------------------------------------
<C>         <S>                                                 <C>
COMMON STOCKS (98.2%)
  AEROSPACE (1.9%)
    19,000  AAR Corp..........................................  $      387
    13,000  Thiokol Corp......................................         513
       300  United Industrial Corp............................           2
                                                                ----------
                                                                       902
                                                                ----------
  BANKING (11.4%)
    17,000  Astoria Financial Corp............................         461
    17,175  First Security Corp. (Delaware)...................         412
    20,000  Greenpoint Financial Corp.........................         565
    17,600  Onbancorp, Inc....................................         576
    28,000  Peoples Heritage Financial Group, Inc.............         571
    16,000  Standard Federal Bank.............................         616
    20,000  Susquehanna Bancshares, Inc.......................         535
    27,000  Trustmark Corp....................................         567
    20,000  Union Planters Corp...............................         608
    21,000  Washington Mutual, Inc............................         627
                                                                ----------
                                                                     5,538
                                                                ----------
  BUILDING (3.0%)
    13,300  Ameron International Corp. (Delaware).............         525
    38,800  Gilbert Associates, Inc., Class A.................         495
    29,000  Ryland Group, Inc.................................         435
                                                                ----------
                                                                     1,455
                                                                ----------
  CAPITAL GOODS (4.5%)
    19,403  Binks Manufacturing Co............................         529
    33,200  Cascade Corp......................................         444
    21,600  Starret (L.S.) Co., Class A.......................         562
    11,700  Tecumseh Products Co., Class A....................         629
                                                                ----------
                                                                     2,164
                                                                ----------
  CHEMICALS (4.3%)
    33,792  Aceto Corp........................................         532
    19,400  Dexter Corp.......................................         577
     9,400  Learonal, Inc.....................................         235
    19,800  Quaker Chemical Corp..............................         253
    14,000  Witco Corp........................................         481
                                                                ----------
                                                                     2,078
                                                                ----------
  COMMUNICATIONS (0.4%)
     8,200  Comsat Corp.......................................         213
                                                                ----------
  CONSUMER-DURABLES (4.2%)
    21,200  Arvin Industries, Inc.............................         472
    23,998  Knape & Vogt Manufacturing Co.....................         378
    31,300  Oneida Ltd........................................         587
    23,100  Smith (A.O.) Corp., Class B.......................         577
                                                                ----------
                                                                     2,014
                                                                ----------
  CONSUMER-RETAIL (5.3%)
    29,800  CPI Corp..........................................         492
    20,700  Guilford Mills, Inc...............................         517
    40,000  Lillian Vernon Corp...............................         510
    10,100  Springs Industries, Inc., Class A.................         510
    20,000  Stanhome, Inc.....................................         530
                                                                ----------
                                                                     2,559
                                                                ----------
 
<CAPTION>
                                                                  VALUE
  SHARES                                                          (000)
<C>         <S>                                                 <C>
- ------------------------------------------------------------
  CONSUMER-STAPLES (3.7%)
    15,246  Block Drug Co., Inc., Class A.....................  $      640
    25,400  Coors (Adolph), Inc., Class B.....................         454
    14,900  International Multifoods Corp.....................         272
    26,400  Nash Finch Co.....................................         423
                                                                ----------
                                                                     1,789
                                                                ----------
  ENERGY (3.5%)
    24,600  Ashland Coal, Inc.................................         640
    17,000  Diamond Shamrock, Inc.............................         491
    18,500  Ultramar Corp.....................................         536
                                                                ----------
                                                                     1,667
                                                                ----------
  FINANCIAL-DIVERSIFIED (5.5%)
    11,900  Finova Group, Inc.................................         580
    12,100  GATX Corp.........................................         584
    28,000  Manufactured Home Communities, Inc. REIT..........         539
    35,000  South West Property Trust REIT....................         468
    21,000  Wellsford Residential Property Trust REIT.........         472
                                                                ----------
                                                                     2,643
                                                                ----------
  HEALTH CARE (6.6%)
    25,000  Analogic Corp.....................................         669
    14,500  Beckman Instruments, Inc..........................         551
    19,400  Bergen Brunswig Corp., Class A....................         538
    35,500  Bindley Western Industries, Inc...................         595
    22,700  Kinetic Concepts, Inc.............................         352
    19,000  United Wisconsin Services, Inc....................         494
                                                                ----------
                                                                     3,199
                                                                ----------
  INDUSTRIAL (4.4%)
    17,200  American Filtrona Corp............................         550
     9,400  Barnes Group, Inc.................................         481
     7,200  Commercial Intertech Corp.........................         185
    34,700  GenCorp, Inc......................................         525
    38,500  Kaman Corp., Class A..............................         390
                                                                ----------
                                                                     2,131
                                                                ----------
  INSURANCE (6.3%)
    16,200  Argonaut Group, Inc...............................         506
    24,000  Enhance Financial Services Group, Inc.............         672
    15,500  Provident Companies, Inc..........................         574
    18,900  Selective Insurance Group, Inc....................         614
    19,950  USLife Corp.......................................         656
                                                                ----------
                                                                     3,022
                                                                ----------
  METALS (2.3%)
    33,000  Birmingham Steel Corp.............................         540
    14,100  Cleveland-Cliffs, Inc.............................         552
                                                                ----------
                                                                     1,092
                                                                ----------
  PAPER & PACKAGING (2.1%)
    16,500  Ball Corp.........................................         474
    13,900  Potlatch Corp.....................................         544
                                                                ----------
                                                                     1,018
                                                                ----------
</TABLE>
 
The accompanying notes are an integral part of the financial statements. (Pages
                                    182-188)
 
- --------------------------------------------------------------------------------
                                                Small Cap Value Equity Portfolio
 
                                       89
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
STATEMENT OF NET ASSETS (UNAUDITED)
JUNE 30, 1996
- --------------------------------------------------------------------------------
 
THE SMALL CAP VALUE EQUITY PORTFOLIO (CONT.)
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>
                                                                  VALUE
  SHARES                                                          (000)
- ------------------------------------------------------------
<C>         <S>                                                 <C>
  SERVICES (10.4%)
    21,200  Angelica Corp.....................................  $      501
    29,000  Bowne & Co........................................         598
    25,700  Cross (A.T.) Co., Class A.........................         456
    40,000  Jackpot Enterprises, Inc..........................         510
    25,900  New England Business Services, Inc................         505
    24,400  Ogden Corp........................................         442
    55,400  Piccadilly Cafeterias, Inc........................         582
    29,500  Russ Berrie & Co., Inc............................         542
    20,000  Sbarro, Inc.......................................         502
    16,300  True North Communications, Inc....................         363
                                                                ----------
                                                                     5,001
                                                                ----------
  TECHNOLOGY (8.9%)
    30,000  Augat, Inc........................................         574
    35,000  Core Industries, Inc..............................         503
    15,800  Cubic Corp........................................         515
    29,000  Dallas Semiconductor Corp.........................         526
    33,700  Gerber Scientific, Inc............................         543
    26,400  MTS Systems Corp..................................         554
    22,500  National Computer Systems, Inc....................         481
     5,000  Park Electrochemical Corp.........................         100
    28,000  Scitex Ltd........................................         483
                                                                ----------
                                                                     4,279
                                                                ----------
  TRANSPORTATION (2.2%)
    21,000  Airborne Freight Corp.............................         546
     3,800  Overseas Shipholding Group, Inc...................          69
    25,000  SkyWest, Inc......................................         466
                                                                ----------
                                                                     1,081
                                                                ----------
  UTILITIES (7.3%)
    19,700  Central Hudson Gas & Electric.....................         616
    19,600  Commonwealth Energy Systems Cos...................         505
    12,000  Eastern Enterprises...............................         399
    18,900  Oneok, Inc........................................         472
    13,700  Orange & Rockland Utilities, Inc..................         503
    13,700  SJW Corp..........................................         456
    31,500  Washington Water Power Co.........................         587
                                                                ----------
                                                                     3,538
                                                                ----------
TOTAL COMMON STOCKS (Cost $41,033)............................      47,383
                                                                ----------
</TABLE>
 
<TABLE>
<CAPTION>
   FACE
  AMOUNT                                                          VALUE
  (000)                                                           (000)
<C>         <S>                                                 <C>
- ------------------------------------------------------------
SHORT-TERM INVESTMENT (1.0%)
  REPURCHASE AGREEMENT (1.0%)
$      465  Chase Securities, Inc. 5.15%, dated 6/28/96, due
              7/01/96, to be repurchased at $465,
              collateralized by $460 U.S. Treasury Notes,
              7.125%, due 9/30/99, valued at $470 (Cost
              $465)...........................................  $      465
                                                                ----------
TOTAL INVESTMENTS (99.2%) (Cost $41,498)......................      47,848
                                                                ----------
</TABLE>
 
<TABLE>
<S>                                                 <C>         <C>
OTHER ASSETS (1.3%)
  Cash............................................  $        1
  Receivable for Investments Sold.................         516
  Dividends Receivable............................         101
  Other...........................................           9         627
                                                    ----------
LIABILITIES (-0.5%)
  Payable for Investments Purchased...............        (101)
  Investment Advisory Fees Payable................         (80)
  Professional Fees Payable.......................         (12)
  Administrative Fees Payable.....................          (8)
  Custodian Fees Payable..........................          (5)
  Distribution Fees Payable.......................          (1)
  Payable for Portfolio Shares Redeemed...........          (1)
  Directors' Fees and Expenses Payable............          (1)
  Other Liabilities...............................          (9)       (218)
                                                    ----------  ----------
NET ASSETS (100%).............................................     $48,257
                                                                ----------
                                                                ----------
NET ASSETS CONSIST OF:
Paid in Capital...............................................  $   38,164
Undistributed Net Investment Income...........................         295
Accumulated Net Realized Gain.................................       3,448
Unrealized Appreciation on Investments........................       6,350
                                                                ----------
NET ASSETS....................................................     $48,257
                                                                ----------
                                                                ----------
CLASS A:
NET ASSETS....................................................     $46,746
NET ASSET VALUE, OFFERING AND REDEMPTION
  PRICE PER SHARE
  Applicable to 3,594,590 outstanding $0.001 par value shares
  (authorized 500,000,000 shares).............................      $13.00
                                                                ----------
                                                                ----------
CLASS B:
NET ASSETS....................................................      $1,511
NET ASSET VALUE, OFFERING AND REDEMPTION
  PRICE PER SHARE
  Applicable to 116,308 outstanding $0.001 par value shares
  (authorized 500,000,000 shares).............................      $12.99
                                                                ----------
                                                                ----------
</TABLE>
 
- ------------------------------------------------------------
REIT -- Real Estate Investment Trust
 
The accompanying notes are an integral part of the financial statements. (Pages
                                    182-188)
 
- --------------------------------------------------------------------------------
Small Cap Value Equity Portfolio
 
                                       90
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
 
OVERVIEW
- --------------------------------------------------------------------------------
 
THE U.S. REAL ESTATE PORTFOLIO
 
COMPOSITION OF NET ASSETS (AT JUNE 30, 1996)
 
EDGAR REPRESENTATION OF DATA POINTS USED IN PRINTED GRAPHIC
 
<TABLE>
<S>                   <C>
Apartment                 20.3%
Land                       3.0%
Lodging/Leisure           10.5%
Manufactured Home          7.1%
Office and
Industrial                35.4%
Retail                    13.7%
Self Storage               4.4%
Other                      5.6%
</TABLE>
 
PERFORMANCE COMPARED TO THE NATIONAL ASSOCIATION
OF REAL ESTATE INVESTMENT TRUSTS (NAREIT) INDEX(1)
- ---------------------------------------------
 
<TABLE>
<CAPTION>
                                             TOTAL RETURNS(2)
                                -------------------------------------------
                                                           AVERAGE ANNUAL
                                   YTD        ONE YEAR     SINCE INCEPTION
                                ----------  ------------  -----------------
<S>                             <C>         <C>           <C>
PORTFOLIO -- CLASS A..........      11.10%       24.20%          24.60%
PORTFOLIO -- CLASS B(3).......      10.15          N/A             N/A
INDEX.........................       6.90        16.16           16.15
 
<FN>
 
1. The NAREIT Index is an unmanaged market weighted index of tax qualified REITs
   (excluding healthcare REITs) listed on the New York Stock Exchange, American
   Stock Exchange and the NASDAQ National Market System, including dividends.
 
2. Total returns for the Portfolio reflect expenses waived and reimbursed, if
   applicable, by the Adviser. Without such waiver and reimbursement, total
   returns would be lower.
 
3. The Portfolio began offering Class B shares on January 2, 1996.
</TABLE>
 
PAST PERFORMANCE IS NOT PREDICTIVE OF FUTURE PERFORMANCE.
 
- ------------------------------------------------------------
 
THE PERFORMANCE RESULTS PROVIDED ARE FOR INFORMATIONAL PURPOSES ONLY AND SHOULD
NOT BE CONSTRUED AS A GUARANTEE OF THE PORTFOLIO'S FUTURE PERFORMANCE. PAST
PERFORMANCE SHOWN IS NOT PREDICTIVE OF FUTURE PERFORMANCE. INVESTMENT RETURN AND
PRINCIPAL VALUE WILL FLUCTUATE SO THAT AN INVESTOR'S SHARES, WHEN REDEEMED, MAY
BE WORTH MORE OR LESS THAN THEIR ORIGINAL COST.
 
The U.S. Real Estate Portfolio seeks to provide above average current income and
long-term capital appreciation by investing primarily in equity securities of
companies in the U.S. real estate industry, including real estate investment
trusts.
 
For the six month period ended June 30, 1996, the Portfolio had a total return
of 11.10% for the Class A shares and 10.15% for the Class B shares, as compared
to a total return of 6.90% for the National Association of Real Estate
Investment Trusts (NAREIT) Index. The average annual total return for the twelve
months ended June 30, 1996 and for the period from inception on February 24,
1995 through June 30, 1996 was 24.20% and 24.60%, respectively, for the Class A
shares, as compared to 16.16% and 16.15%, respectively, for the Index.
 
The continued gradual appreciation in the Index together with average dividend
yields for the companies comprising the Index are consistent with our view of a
commercial real estate market in the United States that is making a transition
from recovery to overall equilibrium. Net absorption of all types of real estate
continued in the second quarter to be positive, and there are even some
indications of a pick-up in spatial demand commensurate with an increase this
year in the overall level of economic activity. As occupancy rates have
continued to rise, rental growth has become generally more widespread, and many
property types are registering not only nominal, but positive REAL growth as
well for the preceding twelve months.
 
With the growth in rental rates and occupancy, new construction of real estate
has now become economically feasible for the first time in over five years.
While providers of capital (including the public REIT market) are generally
skeptical of speculative development, new projects which are well-supported by
pre-leasing and which are conservatively financed are being developed in today's
environment. In those markets which have reached equilibrium, that is, where new
construction is taking place, we can expect rental growth to begin to moderate.
Clearly, our focus in the coming quarters will be to monitor market conditions
to identify which markets, if any, are subject to potential overbuilding which
could lead to a deterioration in operating results. With the exception of a
handful of apartment markets, new development, where it is taking place, does
not appear excessive in comparison to tenant demand.
 
The real estate capital markets have continued to become more liquid. We believe
that this phenomenon is a function of three key factors: first, the gradual
 
- --------------------------------------------------------------------------------
                                                      U.S. Real Estate Portfolio
 
                                       91
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
 
OVERVIEW
- --------------------------------------------------------------------------------
THE U.S. REAL ESTATE PORTFOLIO (CONT.)
recovery in the markets has reduced perceived risk and therefore enticed
investors to re-enter the market; second, the withdrawal of traditional capital
providers and the resumption of selective development has created a substantial
need for new capital in the industry, and third, concern about potential risk in
the equity and fixed income markets has led to a search for defensive
investments such as real estate that provide low or negative correlations with
the primary asset classes.
 
We continue to manage the Portfolio on the basis of establishing an overall
asset allocation framework defined by target exposures to each property type and
region based upon our analysis of underlying property supply and demand
fundamentals. We then select individual securities based upon our analysis of
underlying property value. Using this methodology, the overall shape and
composition of the Portfolio continued to evolve over the course of the second
quarter.
 
To begin with, we continued our policy of gradually under-weighting the
apartment sector, where our overall exposure fell from 23.8% as of March 31,
1996 to 20.3% as of June 30. By contrast, the weighting for the Index is 26%. As
noted in previous reports and as alluded to above, the apartment markets today
are generally in equilibrium, and new construction has led to a leveling-off in
rental growth in most markets. While apartments continue to serve as a
relatively low volatility core to our Portfolio, we continue to find more
attractive total return investment opportunities in other sectors. Consistent
with previous quarters, we continue to focus our investments in regions (e.g.,
the Pacific Coast) or sub-markets (e.g., Class "B" apartments in the sun-belt)
where rental growth continues to exceed the inflation rate.
 
Manufactured Housing continues to be over-weighted in our Portfolio with a 7.1%
position. While dividend and property yields in this sector are relatively
modest, we believe that the combination of modest new construction, minimal
capital requirements and low volatility make this an attractive anchor to the
Portfolio. We continue to underweight the retail sector, and in fact our overall
weighting fell again last quarter, to 13.7%, compared to an Index weighting of
36%. While share prices in the retail sector recovered in May and June after a
significant fall during the first four months of the year, we believe that the
secular bear market in retail continues unabated and that the sector offers no
better than fair value relative to an increasing level of operating risk. To put
our view in some perspective, the overall level of new retail construction is
now at levels not seen since the height of the real estate development boom in
1986. At the same time, the fundamentals of tenant demand and credit risk remain
shaky at best. Increasingly today retail landlords are being asked to take what
are in effect venture capital risks in sponsoring new retail tenants in their
malls and yet are being compensated with fixed income type returns. We do not
believe that this disequilibrium between risk and reward will be alleviated
until the retail market undergoes the kind of wash-out that occurred in the
office, apartment and hotel sectors. Of course, that wash-out was characterized
by 7 years of no construction, tremendous vacancy rates, a precipitous fall in
nominal rents and a huge erosion in operating margins. Under these
circumstances, we have concentrated our retail holdings in names with the
highest quality malls that will best withstand the downturn in capital values
and in companies with a regional focus that provides the best protection against
new competition.
 
At the end of the previous quarter we spoke of our intention to remain
overweight in the office and industrial sectors but to rigorously review our
commitments with a view towards finding attractive underlying asset value. We
felt that this strategy was necessitated by a sector which boasted the most
attractive fundamentals in the industry but where share prices exceeded
intrinsic value by a widening margin. Today, our exposure to the sector is
approximately 35.4% versus 18% for the Index, and we have continued to identify
and add to positions which offer discounts to underlying asset value. During the
quarter we added substantially to our holdings in Bedford Properties, Pacific
Gulf and East Group Properties, three companies with significant exposure to the
office or industrial markets in California and in other selective sun-belt
locations. All three trade at attractive levels relative to underlying assets
and are capitalized to grow through acquisitions and new development. We also
established a position this quarter in The Parkway Company, a company engaged in
the office business in Texas and the Southeast. These four companies, together
with Meridian Industrial, Duke Realty and Liberty Property Trust, form the
backbone of our overweighting in the office and industrial sectors today.
Finally, we have reserved a modest level of cash for an investment in a company
focusing on suburban office buildings in the Midwest which will close in the
third quarter.
 
Lastly, we remain overweighted in the lodging sector, with a 10.5% exposure vs.
6% for the Index, in large part because of the continuing attractive operating
fundamentals in the full-service components of the sector. Shareholders will
note, however, that our
 
- --------------------------------------------------------------------------------
U.S. Real Estate Portfolio
 
                                       92
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
 
OVERVIEW
- --------------------------------------------------------------------------------
THE U.S. REAL ESTATE PORTFOLIO (CONT.)
exposure has been reduced significantly from the previous quarter, largely as a
result of what we believe are now excessive valuation levels prevailing
throughout the sector. One measure of this emerging over-valuation is the
substantial number of IPO in the hotel business. Furthermore, a re-emergence of
new construction in the limited service sector has pushed new construction to
the level of 1986, the preceding peak in the lodging business. While we remain
convinced that full service hotels can deliver attractive capital appreciation
in the coming year, we are becoming increasingly selective in our picks in this
sector and will have a bias towards lightening our exposure should share prices
continue their rapid rise.
 
Russell C. Platt
PORTFOLIO MANAGER
 
Theodore R. Bigman
PORTFOLIO MANAGER
 
July 1996
 
- --------------------------------------------------------------------------------
                                                      U.S. Real Estate Portfolio
 
                                       93
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
STATEMENT OF NET ASSETS (UNAUDITED)
JUNE 30, 1996
- --------------------------------------------------------------------------------
 
THE U.S. REAL ESTATE PORTFOLIO
 
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>
                                                                  VALUE
  SHARES                                                          (000)
- ------------------------------------------------------------
<C>         <S>                                                 <C>
COMMON STOCKS (94.0%)
  APARTMENT (20.3%)
   162,800  Amli Residential Properties Trust REIT............  $    3,358
    41,000  Apartment Investment & Management Co., Class A,
              REIT............................................         769
   233,300  Avalon Properties, Inc., REIT.....................       5,074
    23,000  Columbus Realty Trust REIT........................         446
   132,700  Essex Property Trust, Inc., REIT..................       2,853
    27,800  Evans Withycombe Residential, Inc.................         580
   234,000  Irvine Apartment Communities, Inc., REIT      ....       4,709
    99,600  Oasis Residental, Inc., REIT......................       2,179
   124,500  Paragon Group, Inc., REIT.........................       2,039
   220,300  South West Property Trust REIT....................       2,946
    16,100  Summit Properties, Inc............................         316
                                                                ----------
                                                                    25,269
                                                                ----------
  LAND (3.0%)
(a)245,700  Atlantic Gulf Communities Corp....................       1,474
(a)252,800  Catellus Development Corp.........................       2,307
                                                                ----------
                                                                     3,781
                                                                ----------
  LODGING/LEISURE (10.5%)
    59,900  Felcor Suite Hotels, Inc., REIT...................       1,827
(a)255,000  Host Marriott Corp................................       3,347
 (a)16,100  Interstate Hotels Co..............................         358
(a)306,200  John Q Hammons Hotels, Inc........................       3,330
     9,100  National Golf Properties, Inc.....................         221
(a)258,100  Servico, Inc......................................       3,936
     8,400  Winston Hotels, Inc., REIT........................          97
                                                                ----------
                                                                    13,116
                                                                ----------
  MANUFACTURED HOME (7.1%)
   367,850  ROC Communities, Inc., REIT.......................       8,782
                                                                ----------
  OFFICE AND INDUSTRIAL (35.0%)
    INDUSTRIAL (16.8%)
    57,800  CenterPoint Properties Corp., REIT................       1,402
   201,000  East Group Properties REIT........................       4,372
   464,984  Meridian Industrial Trust, Inc., REIT.............       8,544
    11,100  Meridian Point Realty Trust '83 REIT..............          22
   353,300  Pacific Gulf Properties, Inc., REIT...............       5,918
    38,800  Security Capital Industrial Trust REIT............         684
                                                                ----------
                                                                    20,942
                                                                ----------
    OFFICE (6.8%)
   255,600  Crocker Realty Trust, Inc., REIT..................       2,939
   323,000  Parkway Co........................................       4,926
 (a)67,900  Trizec Corp., Ltd., REIT..........................         518
                                                                ----------
                                                                     8,383
                                                                ----------
 
<CAPTION>
                                                                  VALUE
  SHARES                                                          (000)
- ------------------------------------------------------------
<C>         <S>                                                 <C>
    OFFICE AND INDUSTRIAL (11.4%)
   397,300  Bedford Property Investors, Inc., REIT............  $    5,363
    33,600  Brandywine Realty Trust REIT......................         189
   160,200  Duke Realty Investments, Inc., REIT...............       4,846
   191,500  Liberty Property Trust REIT.......................       3,806
                                                                ----------
                                                                    14,204
                                                                ----------
  TOTAL OFFICE AND INDUSTRIAL.................................      43,529
                                                                ----------
  RETAIL (13.7%)
    FACTORY OUTLET CENTER (1.0%)
   131,200  Factory Stores of America, Inc., REIT.............       1,197
     2,000  Horizon Group, Inc., REIT.........................          41
                                                                ----------
                                                                     1,238
                                                                ----------
    REGIONAL MALL (7.5%)
   170,700  Crown American Realty Trust REIT..................       1,323
   254,100  DeBartolo Realty Corp., REIT......................       4,097
    37,900  Glimcher Realty Trust REIT........................         640
   139,100  Urban Shopping Centers, Inc., REIT................       3,304
                                                                ----------
                                                                     9,364
                                                                ----------
    SHOPPING CENTER (5.2%)
   277,500  Alexander Haagen Properties, Inc., REIT...........       3,538
   254,000  Burnham Pacific Property Trust REIT...............       2,953
                                                                ----------
                                                                     6,491
                                                                ----------
  TOTAL RETAIL................................................      17,093
                                                                ----------
  SELF STORAGE (4.4%)
    11,900  Public Storage, Inc., REIT........................         245
   132,300  Shurgard Storage Centers, Inc., Series A, REIT....       3,341
    92,300  Storage Trust Realty REIT.........................       1,892
                                                                ----------
  TOTAL SELF STORAGE..........................................       5,478
                                                                ----------
TOTAL COMMON STOCKS (Cost $110,912)...........................     117,048
                                                                ----------
</TABLE>
 
<TABLE>
<CAPTION>
  NO. OF
 WARRANTS
  (000)
- ----------
<C>         <S>                                                 <C>
WARRANTS (0.4%)
  INDUSTRIAL (0.4%)
 (a)29,470  Meridian Industrial Trust, Inc., REIT, expiring
              2/23/99.........................................          78
(a)184,843  Meridian Industrial Trust, Inc., REIT, expiring
              2/23/99.........................................         485
                                                                ----------
TOTAL WARRANTS (Cost $409)....................................         563
                                                                ----------
</TABLE>
 
The accompanying notes are an integral part of the financial statements. (Pages
                                    182-188)
 
- --------------------------------------------------------------------------------
U.S. Real Estate Portfolio
 
                                       94
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
STATEMENT OF NET ASSETS (UNAUDITED)
JUNE 30, 1996
- --------------------------------------------------------------------------------
 
U.S. REAL ESTATE PORTFOLIO (CONT.)
- --------------------------------------------------------------------------------
 
<TABLE>
<CAPTION>
   FACE
  AMOUNT                                                          VALUE
  (000)                                                           (000)
- ------------------------------------------------------------
<C>         <S>                                                 <C>
SHORT-TERM INVESTMENT (6.2%)
  REPURCHASE AGREEMENT (6.2%)
$   7,703   Chase Securities, Inc., 5.15%, dated 6/28/96, due
              7/01/96, to be repurchased at $7,706,
              collateralized by $7,570 U.S. Treasury Notes,
              7.125%, due 9/30/99, valued at $7,739 (Cost
              $7,703).........................................  $    7,703
                                                                ----------
TOTAL INVESTMENTS (100.6%) (Cost $119,024)....................     125,314
                                                                ----------
</TABLE>
<TABLE>
<S>                                                 <C>         <C>
OTHER ASSETS (5.2%)
  Receivable for Investments Sold.................  $    5,571
  Dividends Receivable............................         823
  Interest Receivable.............................           3
  Other...........................................           6       6,403
                                                    ----------
LIABILITIES (-5.8%)
  Payable for Investments Purchased...............      (6,906)
  Investment Advisory Fees Payable................        (188)
  Bank Overdraft..................................         (38)
  Administrative Fees Payable.....................         (15)
  Custodian Fees Payable..........................         (13)
  Payable for Portfolio Shares Redeemed...........          (2)
  Distribution Fees Payable.......................          (2)
  Directors' Fees and Expenses Payable............          (2)
  Other Liabilities...............................         (39)     (7,205)
                                                    ----------  ----------
NET ASSETS (100%).............................................    $124,512
                                                                ----------
                                                                ----------
NET ASSETS CONSIST OF:
Paid in Capital...............................................  $  110,144
Undistributed Net Investment Income...........................         548
Accumulated Net Realized Gain.................................       7,530
Unrealized Appreciation on Investments........................       6,290
                                                                ----------
NET ASSETS....................................................  $  124,512
                                                                ----------
                                                                ----------
 
<CAPTION>
CLASS A:
- --------------------------------------------------
<S>                                                 <C>         <C>
NET ASSETS....................................................    $119,709
NET ASSET VALUE, OFFERING AND REDEMPTION
  PRICE PER SHARE
  Applicable to 9,548,747 outstanding $0.001 par value shares
  (authorized 500,000,000 shares).............................      $12.54
                                                                ----------
                                                                ----------
<CAPTION>
CLASS B:
- --------------------------------------------------
<S>                                                 <C>         <C>
NET ASSETS....................................................      $4,803
NET ASSET VALUE, OFFERING AND REDEMPTION
  PRICE PER SHARE
  Applicable to 383,754 outstanding $0.001 par value shares
  (authorized 500,000,000 shares).............................      $12.52
                                                                ----------
                                                                ----------
</TABLE>
 
- ------------------------------------------------------------
(a)  -- Non-income producing security
REIT -- Real Estate Investment Trust
 
The accompanying notes are an integral part of the financial statements. (Pages
                                    182-188)
 
- --------------------------------------------------------------------------------
                                                      U.S. Real Estate Portfolio
 
                                       95
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
 
OVERVIEW
- --------------------------------------------------------------------------------
 
THE VALUE EQUITY PORTFOLIO
 
COMPOSITION OF NET ASSETS (AT JUNE 30, 1996)
 
EDGAR REPRESENTATION OF DATA POINTS USED IN PRINTED GRAPHIC
 
<TABLE>
<S>                          <C>
Aerospace                         2.4%
Banking                          11.9%
Capital Goods                     2.1%
Chemicals                         4.1%
Communications                    5.0%
Consumer-Durables                 4.6%
Consumer-Retail                   6.5%
Consumer-Service & Growth         3.0%
Consumer-Staples                  8.0%
Energy                            6.9%
Financial-Diversified             2.4%
Health Care                       3.8%
Industrial                        4.0%
Insurance                         6.4%
Metals                            2.2%
Paper & Packaging                 5.4%
Technology                        4.5%
Transportation                    3.9%
Utilities                         9.1%
Other                             3.8%
</TABLE>
 
PERFORMANCE COMPARED TO THE S&P 500
AND THE INDATA EQUITY-MEDIAN INDICES(1)
- ----------------------------------------
 
<TABLE>
<CAPTION>
                                           TOTAL RETURNS(2)
                         -----------------------------------------------------
                                                      AVERAGE       AVERAGE
                                                    ANNUAL FIVE   ANNUAL SINCE
                             YTD       ONE YEAR        YEARS       INCEPTION
                         -----------  -----------  -------------  ------------
<S>                      <C>          <C>          <C>            <C>
PORTFOLIO -- CLASS A...       8.55%        21.53%       15.35%         12.31%
PORTFOLIO -- CLASS
 B(3)..................       7.48           N/A          N/A            N/A
S&P 500................      10.09         25.98        15.71          15.05
INDATA EQUITY-MEDIAN...       9.53         23.96        14.95          14.31
 
<FN>
 
1. The Indata Equity-Median Index and the S&P 500 Index are unmanaged indices of
   common stocks. The Indata Equity-Median Index includes an average asset
   allocation of 5% cash and 95% equity based on $30.6 billion in assets among
   562 portfolios for the six month period ended June 30, 1996.
 
2. Total returns for the Portfolio reflect expenses waived and reimbursed, if
   applicable, by the Adviser. Without such waiver and reimbursement, total
   returns would be lower.
 
3. The Portfolio began offering Class B shares on January 2, 1996.
</TABLE>
 
PAST PERFORMANCE IS NOT PREDICTIVE OF FUTURE PERFORMANCE.
 
- ------------------------------------------------------------
 
THE PERFORMANCE RESULTS PROVIDED ARE FOR INFORMATIONAL PURPOSES ONLY AND SHOULD
NOT BE CONSTRUED AS A GUARANTEE OF THE PORTFOLIO'S FUTURE PERFORMANCE. PAST
PERFORMANCE SHOWN IS NOT PREDICTIVE OF FUTURE PERFORMANCE. INVESTMENT RETURN AND
PRINCIPAL VALUE WILL FLUCTUATE SO THAT AN INVESTOR'S SHARES, WHEN REDEEMED, MAY
BE WORTH MORE OR LESS THAN THEIR ORIGINAL COST.
 
Our value investment philosophy for the Value Equity Portfolio is based on the
premise that a diversified portfolio of undervalued securities will outperform
the market over the long-term, and can be expected to preserve principal in a
difficult market environment.
 
Key aspects of our philosophy are as follows:
 
  Reversion to mean valuation levels (return to the long term average) is the
  most consistent and powerful force in investing.
 
  We buy companies selling at less than our research measures to be their true
  worth.
 
  Our Portfolio is characterized by a distinctly below average price-to-earnings
  ratio, price-to-book ratio, and a high dividend yield.
 
  We limit our universe of investments to larger, liquid stocks. This is a list
  similar to the S&P 500.
 
  Investment decisions are based on research undertaken by the Morgan Stanley
  Asset Management/ Chicago investment team.
 
For the six month period ended June 30, 1996, the Portfolio had a total return
of 8.55% for the Class A shares and 7.48% for the Class B shares, as compared to
a total return of 10.09% for the S&P 500 Index and 9.53% for the Indata
Equity-Median Index. The average annual total return for the twelve month and
five year periods ended June 30, 1996 and for the period from inception on
January 31, 1990 through June 30, 1996 were 21.53%, 15.35% and 12.31%,
respectively, for the Class A shares, as compared to 25.98%, 15.71% and 15.05%
for the S&P 500 Index and 23.96%, 14.95% and 14.31%, respectively for the Indata
Equity-Median Index.
 
The Portfolio holds undervalued companies with a wide valuation gap as compared
to the characteristics of the S&P 500:
 
<TABLE>
<CAPTION>
                                                 P/E        P/B
                                              ---------  ---------
<S>                                           <C>        <C>
Value Equity Portfolio......................      14.9x       2.4x
S&P 500.....................................      18.3x       4.3x
</TABLE>
 
Performance in the first half of 1996 was driven primarily by investment style
as growth significantly outperformed value in both large and small cap stock
segments. Year-to-date, the S&P/Barra Value Index returned 8.65% and the
S&P/Barra Growth Index
returned 11.80%. The small cap Russell 2000 Value Index increased 8.86% in the
first half while the Russell 2000 Growth Index returned 11.94%. The market was
extremely volatile, particularly near the end of June, as it deteriorated on
fears of an overheating economy, rising inflation and interest rate
 
- --------------------------------------------------------------------------------
Value Equity Portfolio
 
                                       96
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
 
OVERVIEW
- --------------------------------------------------------------------------------
THE VALUE EQUITY PORTFOLIO (CONT.)
increases along with corporate earnings uncertainty, which caused investors to
sell banking and cyclical stocks in favor of consumer and technology stocks. The
market continued to rise however, as historically strong mutual fund inflows
persisted during the first six months of 1996.
 
The best performing sectors in the Portfolio during the first half of 1996 were
retail, up 57%, and transportation, up 23%. The underperforming sectors for the
first half were consumer non-durables, which declined 3% and paper & forest
products, which returned 0.11%. Year-to-date, the best performing stocks were TJ
Maxx, up 80%, Woolworth, up 73%, Monsanto, up 34%, and Sprint, up 26%. Stocks
providing the biggest disappointment in the first half included Apple Computer,
down 34%, and Fleming Companies, down 29%.
 
During the first six months of 1996, we initiated positions in the tobacco
industry, purchasing both Philip Morris and RJR Nabisco. Due to the overhang of
litigation and possible government regulation, we found the sector to offer high
yields and attractive valuations. We also adjusted the exposure to the energy
sector through sales of Royal Dutch and Texaco, but have been adding to the
Exxon position to maintain a market weighting in the sector.
 
We continue to find the current valuations in finance and cyclicals attractive
and are overweighted in these sectors. The Portfolio is underweighted in health
care, consumer-staples, technology and communications.
 
Stephen C. Sexauer
PORTFOLIO MANAGER
 
Alford E. Zick, Jr.
PORTFOLIO MANAGER
 
July 1996
 
- --------------------------------------------------------------------------------
                                                          Value Equity Portfolio
 
                                       97
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
STATEMENT OF NET ASSETS (UNAUDITED)
JUNE 30, 1996
- --------------------------------------------------------------------------------
 
THE VALUE EQUITY PORTFOLIO
 
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>
                                                                  VALUE
  SHARES                                                          (000)
<C>         <S>                                                 <C>
- ------------------------------------------------------------
COMMON STOCKS (96.2%)
  AEROSPACE (2.4%)
    27,900  United Technologies Corp..........................  $    3,208
                                                                ----------
  BANKING (11.9%)
    35,650  BankAmerica Corp..................................       2,700
    35,800  Bankers Trust (New York) Corp.....................       2,645
    44,400  Chase Manhattan Corp..............................       3,136
    60,000  First of America Bank Corp........................       2,685
    47,650  Mellon Bank Corp..................................       2,716
    80,600  PNC Bank Corp.....................................       2,398
                                                                ----------
                                                                    16,280
                                                                ----------
  CAPITAL GOODS (2.1%)
    70,500  Deere & Co........................................       2,820
                                                                ----------
  CHEMICALS (4.1%)
    43,475  Eastman Chemical Co...............................       2,647
    91,300  Monsanto Co.......................................       2,967
                                                                ----------
                                                                     5,614
                                                                ----------
  COMMUNICATIONS (5.0%)
    48,600  NYNEX Corp........................................       2,308
    33,400  SBC Communications, Inc...........................       1,645
    68,300  Sprint Corp.......................................       2,869
                                                                ----------
                                                                     6,822
                                                                ----------
  CONSUMER-DURABLES (4.6%)
    28,800  Chrysler Corp.....................................       1,786
    70,500  Ford Motor Co.....................................       2,282
    41,700  General Motors Corp...............................       2,184
                                                                ----------
                                                                     6,252
                                                                ----------
  CONSUMER-RETAIL (6.5%)
    50,500  J.C. Penney Co., Inc..............................       2,651
    78,400  TJX Companies, Inc................................       2,646
(a)158,200  Woolworth Corp....................................       3,559
                                                                ----------
                                                                     8,856
                                                                ----------
  CONSUMER-SERVICE & GROWTH (3.0%)
    26,900  Eastman Kodak Co..................................       2,091
   111,500  Ogden Corp........................................       2,021
                                                                ----------
                                                                     4,112
                                                                ----------
  CONSUMER-STAPLES (8.0%)
    55,500  American Brands, Inc..............................       2,518
   145,200  Fleming Cos., Inc.................................       2,087
    32,400  Philip Morris Cos., Inc...........................       3,370
    91,400  RJR Nabisco Holdings Corp.........................       2,833
                                                                ----------
                                                                    10,808
                                                                ----------
  ENERGY (6.9%)
    69,800  Ashland, Inc......................................       2,766
    26,800  Atlantic Richfield Co.............................       3,176
    40,100  Exxon Corp........................................       3,484
                                                                ----------
                                                                     9,426
                                                                ----------
  FINANCIAL-DIVERSIFIED (2.4%)
    43,450  Student Loan Marketing Association................       3,215
                                                                ----------
 
<CAPTION>
                                                                  VALUE
  SHARES                                                          (000)
<C>         <S>                                                 <C>
- ------------------------------------------------------------
  HEALTH CARE (3.8%)
    67,100  Bausch & Lomb, Inc................................  $    2,852
    48,900  Baxter International, Inc.........................       2,311
                                                                ----------
                                                                     5,163
                                                                ----------
  INDUSTRIAL (4.0%)
   133,900  Hanson plc ADR....................................       1,908
    62,100  Rockwell International Corp.......................       3,555
                                                                ----------
                                                                     5,463
                                                                ----------
  INSURANCE (6.4%)
    84,800  American General Corp.............................       3,085
    72,500  Lincoln National Corp.............................       3,353
    43,300  St. Paul Cos., Inc................................       2,317
                                                                ----------
                                                                     8,755
                                                                ----------
  METALS (2.2%)
    48,400  Phelps Dodge Corp.................................       3,019
                                                                ----------
  PAPER & PACKAGING (5.4%)
    99,400  Louisiana-Pacific Corp............................       2,199
    53,300  Weyerhauser Co....................................       2,265
    48,000  Willamette Industries, Inc........................       2,844
                                                                ----------
                                                                     7,308
                                                                ----------
  TECHNOLOGY (4.5%)
    63,100  Apple Computer, Inc...............................       1,317
    51,400  Harris Corp.......................................       3,135
    34,700  Texas Instruments, Inc............................       1,731
                                                                ----------
                                                                     6,183
                                                                ----------
  TRANSPORTATION (3.9%)
 (a)26,600  AMR Corp..........................................       2,421
   103,500  Ryder System, Inc.................................       2,911
                                                                ----------
                                                                     5,332
                                                                ----------
  UTILITIES (9.1%)
    86,000  General Public Utilities Corp.....................       3,031
    75,200  NIPSCO Industries, Inc............................       3,027
   111,200  Pinnacle West Capital Corp........................       3,378
    69,700  Texas Utilities Co................................       2,980
                                                                ----------
                                                                    12,416
                                                                ----------
TOTAL COMMON STOCKS (Cost $113,174)...........................     131,052
                                                                ----------
</TABLE>
 
<TABLE>
<CAPTION>
   FACE
  AMOUNT
  (000)
- ----------
<C>         <S>                                                 <C>
SHORT-TERM INVESTMENT (3.5%)
  REPURCHASE AGREEMENT (3.5%)
$   4,864   Chase Securities, Inc., 5.15%, dated 6/28/96, due
              7/01/96, to be repurchased at $4,866,
              collateralized by $4,860 U.S.Treasury Notes,
              7.125%, due 9/30/99, valued at $4,969 (Cost
              $4,864).........................................       4,864
                                                                ----------
</TABLE>
 
The accompanying notes are an integral part of the financial statements. (Pages
                                    182-188)
 
- --------------------------------------------------------------------------------
Value Equity Portfolio
 
                                       98
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
STATEMENT OF NET ASSETS
JUNE 30, 1996
- --------------------------------------------------------------------------------
 
THE VALUE EQUITY PORTFOLIO (CONT.)
- --------------------------------------------------------------------------------
 
<TABLE>
<CAPTION>
                                                                  VALUE
                                                                  (000)
<S>                                                 <C>         <C>
- ------------------------------------------------------------
TOTAL INVESTMENTS (99.7%) (Cost $118,038).....................    $135,916
                                                                ----------
OTHER ASSETS (0.4%)
  Cash............................................  $        1
  Dividends Receivable............................         331
  Receivable for Investments Sold.................         122
  Receivable for Portfolio Shares Sold............         117
  Interest Receivable.............................           2
  Other...........................................          10         583
                                                    ----------
LIABILITIES (-0.1%)
  Investment Advisory Fees Payable................        (163)
  Administrative Fees Payable.....................         (18)
  Professional Fees Payable.......................         (13)
  Custodian Fees Payable..........................          (7)
  Payable for Portfolio Shares Redeemed...........          (5)
  Directors' Fees and Expenses Payable............          (3)
  Distribution Fees Payable.......................          (1)
  Other Liabilities...............................         (19)       (229)
                                                                ----------
                                                    ----------
NET ASSETS (100%).............................................    $136,270
                                                                ----------
                                                                ----------
NET ASSETS CONSIST OF:
Paid in Capital...............................................  $  103,944
Undistributed Net Investment Income...........................       1,001
Accumulated Net Realized Gain.................................      13,447
Unrealized Appreciation on Investments........................      17,878
                                                                ----------
NET ASSETS....................................................    $136,270
                                                                ----------
                                                                ----------
</TABLE>
 
<TABLE>
<C>         <S>                                                 <C>
CLASS A:
NET ASSETS....................................................    $134,316
NET ASSET VALUE, OFFERING AND REDEMPTION
  PRICE PER SHARE
  Applicable to 8,933,461 outstanding $0.001 par value shares
  (authorized 500,000,000 shares).............................      $15.04
                                                                ----------
                                                                ----------
CLASS B:
NET ASSETS....................................................      $1,954
NET ASSET VALUE, OFFERING AND REDEMPTION
  PRICE PER SHARE
  Applicable to 130,101 outstanding $0.001 par value shares
  (authorized 500,000,000 shares).............................      $15.02
                                                                ----------
                                                                ----------
</TABLE>
 
- ------------------------------------------------------------
 
<TABLE>
<S>        <C>        <C>
(a)           --      Non-income producing security
ADR           --      American Depositary Receipt
</TABLE>
 
The accompanying notes are an integral part of the financial statements. (Pages
                                    182-188)
 
- --------------------------------------------------------------------------------
                                                          Value Equity Portfolio
 
                                       99
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
 
OVERVIEW
- --------------------------------------------------------------------------------
 
THE BALANCED PORTFOLIO
 
COMPOSITION OF NET ASSETS (AT JUNE 30, 1996)
 
EDGAR REPRESENTATION OF DATA POINTS USED IN PRINTED GRAPHIC
 
<TABLE>
<S>                           <C>
Aerospace                          1.1%
Banking                            6.2%
Capital Goods                      0.9%
Chemicals                          2.1%
Communications                     2.8%
Consumer - Durables                2.3%
Consumer - Retail                  3.4%
Consumer - Service & Growth        1.5%
Consumer - Staples                 3.7%
Energy                             3.4%
Financial -Diversified             1.1%
Health Care                        1.9%
Industrial                         2.0%
Insurance                          3.0%
Metals                             1.2%
Paper & Packaging                  3.0%
Technology                         2.7%
Transportation                     1.9%
Utilities                          4.7%
U.S. Treasury Notes               43.0%
Other                              8.1%
</TABLE>
 
PERFORMANCE COMPARED TO INDATA
BALANCED-MEDIAN INDEX(1)
- -----------------------------
 
<TABLE>
<CAPTION>
                                                   TOTAL RETURNS(2)
                                       -----------------------------------------
                                                                      AVERAGE
                                                        AVERAGE        ANNUAL
                                                        ANNUAL         SINCE
                              YTD        ONE YEAR     FIVE YEARS     INCEPTION
                           ----------  ------------  -------------  ------------
<S>                        <C>         <C>           <C>            <C>
PORTFOLIO -- CLASS A.....       3.92%       12.44%        11.26%         10.13%
PORTFOLIO -- CLASS
B(3).....................       3.40       N/A            N/A           N/A
INDEX....................       5.41        15.57         11.68          11.15
 
<FN>
 
1. The Indata Balanced-Median Index is an unmanaged index and includes an asset
   allocation of 7% cash, 39% bonds and 54% equity based on $37.8 billion in
   assets among 538 portfolios for the six month period ended June 30, 1996
   (assumes dividends reinvested). The index returns are gross of management
   fees; the Portfolio returns are net of management fees and expenses.
 
2. Total returns for the Portfolio reflect expenses waived and reimbursed, if
   applicable, by the Adviser. Without such waiver and reimbursement, total
   returns would be lower.
 
3. The Portfolio began offering Class B shares on January 2, 1996.
</TABLE>
 
PAST PERFORMANCE IS NOT PREDICTIVE OF FUTURE PERFORMANCE.
 
- ------------------------------------------------------------
 
THE PERFORMANCE RESULTS PROVIDED ARE FOR INFORMATIONAL PURPOSES ONLY AND SHOULD
NOT BE CONSTRUED AS A GUARANTEE OF THE PORTFOLIO'S FUTURE PERFORMANCE. PAST
PERFORMANCE SHOWN IS NOT PREDICTIVE OF FUTURE PERFORMANCE. INVESTMENT RETURN AND
PRINCIPAL VALUE WILL FLUCTUATE SO THAT AN INVESTOR'S SHARES, WHEN REDEEMED, MAY
BE WORTH MORE OR LESS THAN THEIR ORIGINAL COST.
 
The Balanced Portfolio's value investment philosophy is based on the premise
that a diversified portfolio of undervalued equity securities and fixed income
securities will outperform the market over the long-term and can be expected to
preserve principal in a difficult market environment.
 
The Balanced Portfolio's asset allocation strategy between equities, fixed
income and cash is based upon our estimate of the portfolio's risk. Since
equities are the highest risk asset class, we have maintained a below average
equity exposure during past periods of high market valuation. Typically, our
equity exposure will range between 35% and 65% with an expected long term
average of 55%.
 
For the six month period ended June 30, 1996, the Portfolio had a total return
of 3.92% for the Class A shares and 3.40% for the Class B shares, as compared to
a total return of 5.41% for the Indata Balanced-Median Index. The average annual
total return for the twelve month and five year periods ended June 30, 1996, and
for the period from inception on February 20, 1990 through June 30, 1996 for the
Class A shares was 12.44%, 11.26% and 10.13%, respectively, as compared to
15.57%, 11.68% and 11.15%, respectively, for the Index.
 
Our asset allocation, based on market value at June 30, 1996, is as follows:
 
<TABLE>
<S>                                       <C>
Equities................................       49.3%
Fixed Income............................       43.4
Cash....................................        7.3
                                              -----
                                              100.0%
                                              -----
                                              -----
</TABLE>
 
EQUITIES
 
For the quarter ended June 30, 1996, the equity component of the Portfolio had a
gross return of 3.21% and for the six months ended June 30, 1996, returned
9.33%. The S&P 500 returned 4.51% for the quarter ended June 30, 1996 and 10.20%
for the first half of 1996.
 
Performance in the first half of 1996 was driven primarily by investment style
as growth significantly outperformed value in both large and small cap stock
segments. Year-to-date, the S&P/Barra Value Index returned 8.65% and the
S&P/Barra Growth Index returned 11.80%. The small cap Russell 2000 Value Index
increased 8.86% in the first half while the Russell 2000 Growth Index returned
11.94%. The market was extremely volatile, particularly near the
 
- --------------------------------------------------------------------------------
Balanced Portfolio
 
                                      100
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
 
OVERVIEW
- --------------------------------------------------------------------------------
THE BALANCED PORTFOLIO (CONT.)
 
end of June, as it deteriorated on fears of an overheating economy, rising
inflation and interest rate increases along with corporate earnings uncertainty,
which caused investors to sell banking and cyclical stocks in favor of consumer
and technology stocks. The market continued to rise however, as historically
strong mutual fund inflows persisted during the first six months of 1996.
 
The equity component of the Balanced Portfolio holds the same undervalued
companies that are held in the Value Equity Portfolio. The equity portion of the
Portfolio has a wide valuation gap as compared to the characteristics of the S&P
500.
 
<TABLE>
<CAPTION>
PORTFOLIO EQUITY PORTION                          P/E        P/B
- ---------------------------------------------  ---------  ---------
<S>                                            <C>        <C>
Value Equity Portfolio.......................      14.9x       2.4x
S&P 500......................................      18.3x       4.3x
</TABLE>
 
The best performing sectors in the Portfolio during the first half of 1996 were
retail, up 57%, and transportation, up 23%. The underperforming sectors for the
first half were consumer non-durables which declined 3% and paper & forest
products, which returned 0.11%. Year-to-date, the best performing stocks were TJ
Maxx, up 80%, Woolworth, up 73%, Monsanto, up 34%, and Sprint, up 26%. Stocks
providing the biggest disappointment in the first half included Apple Computer,
down 34%, and Fleming Companies, down 29%.
 
During the first six months of 1996, we initiated positions in the tobacco
industry, purchasing both Philip Morris and RJR Nabisco. Due to the overhang of
litigation and possible government regulation, we found the sector to offer high
yields and attractive valuations. We also adjusted the exposure to the energy
sector through sales of Royal Dutch and Texaco, but have been adding to the
Exxon position to maintain a market weighting in the sector.
 
We continue to find the current valuations in finance and cyclicals attractive
and are overweighted in these sectors. The Portfolio is underweighted in health
care, consumer-staples, technology and communications.
 
FIXED INCOME
 
The fixed income component of the Balanced Portfolio continues to maintain 100%
exposure to intermediate-term U.S. Government securities. For the six months
ended June 30, 1996, the fixed income portion of the Portfolio had total return
of (-0.02%) compared to a return of (-0.21%) for the Lehman Intermediate-
Government/Corporate Index (MSAM/Chicago's fixed-income benchmark).
 
The fixed income component of the Portfolio began the year at a weighted average
maturity of 3.1 years. During the first half of 1996, interest rates rose across
all maturity spectrums, with the largest increase occurring in the longer term
maturities. This upward shift in the yield curve hurt the performance of the
Portfolio. With inflation at approximately the 3% level, and intermediate yields
(5 year maturity) at the 6.5% level, we are comfortable with our current
position, which is less than the benchmark.
 
Stephen C. Sexauer
PORTFOLIO MANAGER
 
Alford E. Zick, Jr.
PORTFOLIO MANAGER
 
July 1996
 
- --------------------------------------------------------------------------------
                                                              Balanced Portfolio
 
                                      101
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
STATEMENT OF NET ASSETS (UNAUDITED)
JUNE 30, 1996
- --------------------------------------------------------------------------------
 
THE BALANCED PORTFOLIO
 
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>
                                                                  VALUE
  SHARES                                                          (000)
- ------------------------------------------------------------
<C>         <S>                                                 <C>
COMMON STOCKS (48.9%)
  AEROSPACE (1.1%)
     1,425  United Technologies Corp..........................  $      164
                                                                ----------
  BANKING (6.2%)
     2,250  BankAmerica Corp..................................         170
     2,050  Bankers Trust (New York) Corp.....................         152
     2,550  Chase Manhattan Corp..............................         180
     3,500  First of America Bank Corp........................         157
     2,800  Mellon Bank Corp..................................         160
     4,550  PNC Bank Corp.....................................         135
                                                                ----------
                                                                       954
                                                                ----------
  CAPITAL GOODS (0.9%)
     3,500  Deere & Co........................................         140
                                                                ----------
  CHEMICALS (2.1%)
     2,225  Eastman Chemical Co...............................         135
     6,000  Monsanto Co.......................................         195
                                                                ----------
                                                                       330
                                                                ----------
  COMMUNICATIONS (2.8%)
     3,500  NYNEX Corp........................................         166
     1,925  SBC Communications, Inc...........................          95
     4,150  Sprint Corp.......................................         174
                                                                ----------
                                                                       435
                                                                ----------
  CONSUMER-DURABLES (2.3%)
     1,475  Chrysler Corp.....................................          91
     4,225  Ford Motor Co.....................................         137
     2,550  General Motors Corp...............................         134
                                                                ----------
                                                                       362
                                                                ----------
  CONSUMER-RETAIL (3.4%)
     2,950  J.C. Penney Co., Inc..............................         155
     4,550  TJX Companies, Inc................................         154
  (a)9,800  Woolworth Corp....................................         220
                                                                ----------
                                                                       529
                                                                ----------
  CONSUMER-SERVICE & GROWTH (1.5%)
     1,500  Eastman Kodak Co..................................         117
     6,150  Ogden Corp........................................         111
                                                                ----------
                                                                       228
                                                                ----------
  CONSUMER-STAPLES (3.7%)
     3,150  American Brands, Inc..............................         143
     9,600  Fleming Cos., Inc.................................         138
     1,475  Philip Morris Cos., Inc...........................         153
     4,200  RJR Nabisco Holdings Corp.........................         130
                                                                ----------
                                                                       564
                                                                ----------
  ENERGY (3.4%)
     3,800  Ashland, Inc......................................         150
     1,550  Atlantic Richfield Co.............................         184
     2,275  Exxon Corp........................................         198
                                                                ----------
                                                                       532
                                                                ----------
 
<CAPTION>
                                                                  VALUE
  SHARES                                                          (000)
- ------------------------------------------------------------
<C>         <S>                                                 <C>
  FINANCIAL-DIVERSIFIED (1.1%)
     2,250  Student Loan Marketing Association................  $      167
                                                                ----------
  HEALTH CARE (1.9%)
     3,850  Bausch & Lomb, Inc................................         164
     2,800  Baxter International, Inc.........................         132
                                                                ----------
                                                                       296
                                                                ----------
  INDUSTRIAL (2.0%)
     7,950  Hanson plc ADR....................................         114
     3,550  Rockwell International Corp.......................         203
                                                                ----------
                                                                       317
                                                                ----------
  INSURANCE (3.0%)
     4,650  American General Corp.............................         169
     3,650  Lincoln National Corp.............................         169
     2,500  St. Paul Cos., Inc................................         134
                                                                ----------
                                                                       472
                                                                ----------
  METALS (1.2%)
     3,050  Phelps Dodge Corp.................................         190
                                                                ----------
  PAPER & PACKAGING (3.0%)
     5,700  Louisiana-Pacific Corp............................         126
     3,200  Weyerhauser Co....................................         136
     3,500  Willamette Industries, Inc........................         207
                                                                ----------
                                                                       469
                                                                ----------
  TECHNOLOGY (2.7%)
     4,000  Apple Computer, Inc...............................          83
     3,225  Harris Corp.......................................         197
     2,800  Texas Instruments, Inc............................         140
                                                                ----------
                                                                       420
                                                                ----------
  TRANSPORTATION (1.9%)
  (a)1,600  AMR Corp..........................................         145
     5,150  Ryder System, Inc.................................         145
                                                                ----------
                                                                       290
                                                                ----------
  UTILITIES (4.7%)
     5,550  General Public Utilities Corp.....................         196
     4,300  NIPSCO Industries, Inc............................         173
     5,700  Pinnacle West Capital Corp........................         173
     4,350  Texas Utilities Co................................         186
                                                                ----------
                                                                       728
                                                                ----------
TOTAL COMMON STOCKS (Cost $6,206).............................       7,587
                                                                ----------
</TABLE>
 
<TABLE>
<CAPTION>
   FACE
  AMOUNT
  (000)
<C>         <S>                                                 <C>
- ----------
FIXED INCOME SECURITIES (43.0%)
  U.S. TREASURY NOTES (43.0%)
$    2,875  8.25%, 7/15/98....................................       2,989
     3,803  5.50%, 4/15/00....................................       3,689
                                                                ----------
TOTAL FIXED INCOME SECURITIES (Cost $6,681)...................       6,678
                                                                ----------
</TABLE>
 
The accompanying notes are an integral part of the financial statements. (Pages
                                    182-188)
 
- --------------------------------------------------------------------------------
Balanced Portfolio
 
                                      102
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
STATEMENT OF NET ASSETS (UNAUDITED)
JUNE 30, 1996
- --------------------------------------------------------------------------------
 
THE BALANCED PORTFOLIO (CONT.)
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>
   FACE
  AMOUNT                                                          VALUE
  (000)                                                           (000)
- ------------------------------------------------------------
<C>         <S>                                                 <C>
SHORT-TERM INVESTMENT (7.2%)
  REPURCHASE AGREEMENT (7.2%)
$    1,121  Chase Securities, Inc. 5.15%, dated 6/28/96, due
              7/01/96, to be repurchased at $1,121,
              collateralized by $1,105 U.S. Treasury Notes,
              7.125%, due 9/30/99, valued at $1,130 (Cost
              $1,121).........................................  $    1,121
                                                                ----------
TOTAL INVESTMENTS (99.1%) (Cost $14,008)......................      15,386
                                                                ----------
</TABLE>
 
<TABLE>
<S>                                                 <C>         <C>
OTHER ASSETS (1.2%)
  Interest Receivable.............................  $      154
  Dividends Receivable............................          20
  Receivable due from Investment Adviser..........           1
  Other...........................................           6         181
                                                         -----
LIABILITIES (-0.3%)
  Professional Fees Payable.......................         (12)
  Bank Overdraft..................................         (11)
  Custodian Fees Payable..........................          (4)
  Shareholder Reporting Fees Payable..............          (4)
  Administrative Fees Payable.....................          (3)
  Distribution Fees Payable.......................          (2)
  Other Liabilities...............................          (2)        (38)
                                                         -----  ----------
NET ASSETS (100%).............................................     $15,529
                                                                ----------
                                                                ----------
NET ASSETS CONSIST OF:
Paid in Capital...............................................  $   12,381
Undistributed Net Investment Income...........................         185
Accumulated Net Realized Gain.................................       1,585
Unrealized Appreciation on Investments........................       1,378
                                                                ----------
NET ASSETS....................................................     $15,529
                                                                ----------
                                                                ----------
</TABLE>
 
<TABLE>
<C>         <S>                                                 <C>
CLASS A:
NET ASSETS....................................................     $13,173
NET ASSET VALUE, OFFERING AND REDEMPTION
  PRICE PER SHARE
  Applicable to 1,282,063 outstanding $0.001 par value shares
  (authorized 500,000,000 shares).............................      $10.27
                                                                ----------
                                                                ----------
CLASS B:
NET ASSETS....................................................      $2,356
NET ASSET VALUE, OFFERING AND REDEMPTION
  PRICE PER SHARE
  Applicable to 229,653 outstanding $0.001 par value shares
  (authorized 500,000,000 shares).............................      $10.26
                                                                ----------
                                                                ----------
</TABLE>
 
- ------------------------------------------------------------
 
<TABLE>
<S>        <C>        <C>
(a)           --      Non-income producing security
ADR           --      American Depositary Receipt
</TABLE>
 
The accompanying notes are an integral part of the financial statements. (Pages
                                    182-188)
 
- --------------------------------------------------------------------------------
                                                              Balanced Portfolio
 
                                      103
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
 
OVERVIEW
- --------------------------------------------------------------------------------
 
THE EMERGING MARKETS DEBT PORTFOLIO
 
COMPOSITION OF NET ASSETS (AT JUNE 30, 1996)
 
EDGAR REPRESENTATION OF DATA POINTS USED IN PRINTED GRAPHIC
 
<TABLE>
<S>            <C>
Argentina          10.9%
Brazil             21.2%
Ecuador             5.2%
Mexico             14.4%
Morocco             3.7%
Panama              5.1%
Peru                3.2%
Poland              1.0%
Russia             19.6%
South Africa        3.6%
Turkey              1.2%
Venezuela          11.4%
United States       4.1%
Other              -4.6%
</TABLE>
 
PERFORMANCE COMPARED TO THE JP MORGAN EMERGING MARKETS BOND INDEX(1)
- ----------------------------------------------
 
<TABLE>
<CAPTION>
                                       TOTAL RETURNS(2)
                          -------------------------------------------
                                                     AVERAGE ANNUAL
                             YTD        ONE YEAR     SINCE INCEPTION
                          ----------  ------------  -----------------
<S>                       <C>         <C>           <C>
PORTFOLIO -- CLASS A....      18.39%       36.37%          11.64%
PORTFOLIO -- CLASS
B(3)....................      16.94       N/A              N/A
INDEX...................      13.38        32.39            6.95
 
<FN>
 
1. The J.P. Morgan Emerging Markets Bond Index is a market weighted index
   composed of all Brady bonds outstanding and includes Argentina, Brazil,
   Bulgaria, Mexico, Nigeria, the Philippines, Poland and Venezuela.
 
2. Total returns for the Portfolio reflect expenses waived and reimbursed, if
   applicable, by the Adviser. Without such waiver and reimbursement, total
   returns would be lower.
 
3. The Portfolio began offering Class B shares on January 2, 1996.
</TABLE>
 
PAST PERFORMANCE IS NOT PREDICTIVE OF FUTURE PERFORMANCE.
 
- ------------------------------------------------------------
 
THE PERFORMANCE RESULTS PROVIDED IN THIS OVERVIEW ARE FOR INFORMATIONAL PURPOSES
ONLY AND SHOULD NOT BE CONSTRUED AS A GUARANTEE OF THE PORTFOLIO'S FUTURE
PERFORMANCE. PAST PERFORMANCE SHOWN IS NOT PREDICTIVE OF FUTURE PERFORMANCE.
INVESTMENT RETURN AND PRINCIPAL VALUE WILL FLUCTUATE SO THAT AN INVESTOR'S
SHARES, WHEN REDEEMED, MAY BE WORTH MORE OR LESS THAN THEIR ORIGINAL COST.
PLEASE SEE THE PROSPECTUS FOR A DESCRIPTION OF CERTAIN RISK CONSIDERATIONS
ASSOCIATED WITH INTERNATIONAL INVESTING. YIELDS WILL FLUCTUATE AS MARKET
CONDITIONS CHANGE.
 
The investment objective of the Emerging Markets Debt Portfolio is high total
return through investment primarily in debt securities of government,
government-related and corporate issuers located in emerging countries.
 
For the six month period ended June 30, 1996, the Portfolio had a total return
of 18.39% for the Class A shares and 16.94% for the Class B shares, as compared
to a total return of 13.38% for the J.P. Morgan Emerging Markets Bond Index. The
average annual total return for the twelve months ended June 30, 1996 and for
the period from inception on February 1, 1994 through June 30, 1996 was 36.37%
and 11.64%, respectively, for the Class A shares, as compared to 32.39% and
6.95%, respectively, for the Index. As of June 30, 1996, the Portfolio had an
SEC 30-day yield of 12.65% for the Class A shares and 12.64% for the Class B
shares.
 
For the three months ended June 30, 1996 the Portfolio had a total return of
12.75% for the Class A shares and 12.53% for the Class B shares as compared to a
total return of 9.28% for the Index.
 
Emerging markets debt de-coupled from the U.S. bond market during the second
quarter of 1996. Improving credit stories in emerging market countries
successively counteracted the negative influence of rising interest rates. The
U.S. bond market was repeatedly buffeted by signs of strength in the U.S.
economy during the last three months. The long end of the market tested the lows
on each occasion that the non-farm payroll data was released in the quarter.
Yields of 7.20% and above were attractive to aggressive fixed income investors.
High real rates and the prospect that the economy would fail to retain the
momentum of faster growth prompted rates to rally from their highs. We believe
that the global economy is likely to witness a synchronized global pick up in
aggregate demand within the next twelve months and any sign that the Federal
Reserve is behind the curve in terms of managing inflation could result in a
severe reaction in the bond market. Emerging market debt should continue to
outperform other fixed income markets as long as credit fundamentals remain on
an improving trend, with floating rate non-collateralized bonds continuing to be
the preferred sector in the market.
 
The Portfolio outperformed over the quarter due to its overweight positions in
Russia, Venezuela and Panama and underweight position for the major Latin
American countries: Argentina, Brazil and Mexico. During the quarter, Russia,
Panama, Venezuela, Peru, Philippines and Ecuador outperformed the market and
Argentina, Brazil and Mexico underperformed the overall market.
 
- --------------------------------------------------------------------------------
Emerging Markets Debt Portfolio
 
                                      104
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
 
OVERVIEW
- --------------------------------------------------------------------------------
THE EMERGING MARKETS DEBT PORTFOLIO (CONT.)
 
Russian loans were the outperformers of the quarter as incumbent President
Yeltsin won the second round election by a wide margin. We reduced our positions
in Russian loans gradually during the last month of the quarter. The sharp
post-election rally surprised even the believers. We believe the loans will
trade in a tight range for some time as post-election reality sets in. Economic
problems such as a wide fiscal deficit, banking sector restructurings, tight
domestic liquidity conditions, a gradual uptick in inflation and Kremlin
politics will keep a lid on prices. Valuations of the loans, based on the terms
of the restructuring, suggest that they continue to be the cheapest assets in
the emerging fixed income markets.
 
Mexican external debt trailed the market after the run-up in prices on the back
of its exchange offer to substitute collateralized Brady debt with a non-
collateralized, current coupon bond with a bullet maturity of 30 years.
Lingering concerns over the fragile economic recovery in the domestic
non-tradeable sector and the need for an adjustment in the nominal value of the
exchange rate made investors shy away from Mexican bonds. The local currency
denominated treasury bills continued to be the best performing sector. We
increased our allocation to Mexico towards the end of the quarter as we believed
investor skepticism to have peaked. The domestic political situation continues
to warrant a close watch as the investigation of various financial scandals
could unearth all kinds of skeletons in the cupboards of the ruling elites.
 
Argentina continued to underperform the market, despite signs that an economic
recovery was underway. Tax receipts continued to stagnate and the fiscal targets
agreed to with the IMF continue to look ambitious. High unemployment and low
consumer confidence continue to prove to be a drag on the recovery. Despite
abundant liquidity in the banking system, a consumption and trade led economic
recovery is taking a long time to take hold. Unless a durable and sustained
recovery becomes a reality in the second half, Argentina faces a difficult
economic future in the months ahead. Rising U.S. interest rates and a firm
dollar will prove to be a considerable headwind for the Convertibility Plan to
weather. We do not anticipate making any changes to our allocation to Argentina
in the immediate future.
 
Brazil came under closer scrutiny as a leading academic questioned the
sustainability of the Real plan. Questions related to its burgeoning internal
debt and overvalued exchange rates led some to draw parallels with Mexico's
situation in 1994. We do not believe that Brazil and Mexico should be put in the
same basket. Brazil's performance is far less dependent on external capital, (
in fact it could be argued that a withdrawal of short term capital will probably
be of benefit) and the overvaluation of its currency less significant, for any
comparisons to Mexico to setoff any alarm bells at this juncture. There is no
doubt that the long run sustainability of the Real plan requires a fiscal
adjustment. Political wrangling should not be allowed to derail the process of
stabilization. Progress towards implementing a fiscal adjustment remains one of
the elements that we would be watching for to justify maintaining our allocation
to Brazil. We increased our allocations towards the end of the quarter as the
administration sought to counteract market pressure related to the stagnation of
its various reform proposals in the legislature by becoming more ambitious in
the fields of privatization and de-regulation of the economy.
 
Venezuela continued to make slow and steady progress towards implementing an
orthodox stabilization program. We reduced our allocation to the country as its
bonds moved up in price, discounting the positive news of an IMF stabilization
plan.
 
Other high yielding markets of Ecuador and Bulgaria witnessed volatility as
Ecuador braced for the second round of its Presidential elections and Bulgaria
coped with economic distress after swallowing the bitter pill of an IMF program.
 
Despite a negative U.S. rate environment in the first half, emerging debt has
performed well. Improvement in economic fortunes of most of the countries
included in the universe has delivered handsome returns. What is underway is the
dramatic re-rating of this asset class, a process that was interrupted by the
Mexican crisis of 1994. Barring changes in the economic outlook of the various
countries, this process has not yet been finished. If the headwind of rising
interest rates becomes stronger in the second half, there may be some
retracement in prices, as liquidity alone cannot sustain the run-up in prices.
 
Paul Ghaffari
PORTFOLIO MANAGER
 
July 1996
 
- --------------------------------------------------------------------------------
                                                 Emerging Markets Debt Portfolio
 
                                      105
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
STATEMENT OF NET ASSETS (UNAUDITED)
JUNE 30, 1996
- --------------------------------------------------------------------------------
 
THE EMERGING MARKETS DEBT PORTFOLIO
 
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>
      FACE
     AMOUNT                                                             VALUE
      (000)                                                             (000)
<C>                <S>                                                 <C>
- ------------------------------------------------------------
DEBT INSTRUMENTS (91.3%)
  ARGENTINA (10.9%)
    BONDS (10.9%)
$           2,000  Republic of Argentina BOCON, Series 2, (Floating
                     Rate), PIK, 3.359%, 9/01/02.....................  $  1,538
            5,000  Republic of Argentina Discount Bonds, (Floating
                     Rate), 6.438%, 3/31/23..........................     3,500
        (s)20,790  Republic of Argentina, Series L, "Euro", (Floating
                     Rate) 6.313%, 3/31/05...........................    16,242
                                                                       --------
                                                                         21,280
                                                                       --------
  BRAZIL (21.2%)
    BONDS (21.2%)
           13,500  Federative Republic of Brazil Discount Bond,
                     Series Z-L, (Floating Rate), 6.50%, 4/15/24.....     9,593
           14,500  Federative Republic of Brazil Debt Conversion
                     Bond, Series Z-L, (Floating Rate), 6.563%,
                     4/15/12.........................................     9,932
           35,406  Federative Republic of Brazil, Series C, "Euro",
                     (Floating Rate), PIK, 8.00%, 4/15/14............    21,908
                                                                       --------
                                                                         41,433
                                                                       --------
  ECUADOR (5.2%)
    BOND (5.2%)
        (e)21,867  Republic of Ecuador PDI Bond, (Floating Rate),
                     PIK, 6.063%, 2/27/15............................     9,963
                                                                       --------
  MEXICO (8.1%)
    BONDS (8.1%)
            2,000  Banamex Convertible Bond, 7.00%, 12/15/99.........     1,850
MXP      19,092    Banamex Pagare Discount Bond, 4/03/97.............     1,987
           32,143  Banamex Pagare Discount Bond, 10/09/97............     2,927
$           1,000  Grupo Mexicano de Desarrollo, 8.25%, 2/17/01......       520
ZAR       8,000    Nacional Financiera SNC 17.00%, 2/26/99...........     1,800
$           6,000  United Mexican States, 11.50%, 5/15/26............     5,490
            1,500  Mexican Discount Bond, Series A, (Floating Rate),
                     6.398%, 12/31/19 (Value Recovery Rights
                     Attached).......................................     1,181
                                                                       --------
                                                                         15,755
                                                                       --------
  MOROCCO (3.7%)
    LOAN AGREEMENTS (3.7%)
        (l)10,000  Kingdom of Morocco Restructuring and Consolidating
                     Agreement, Tranche A, 6.4381%, (Floating Rate),
                     1/01/09 (Participation: J.P. Morgan)............     7,212
                                                                       --------
 
<CAPTION>
      FACE
     AMOUNT                                                             VALUE
      (000)                                                             (000)
<C>                <S>                                                 <C>
- ------------------------------------------------------------
  PANAMA (5.1%)
    LOAN AGREEMENTS (5.1%)
$    (b,d,k)10,113 Republic of Panama Loans..........................  $  9,961
                                                                       --------
  PERU (3.2%)
    BOND (3.2%)
       (b,k)9,699  Peru Working Capital Lines, 1/01/99 (Floating
                     Rate)...........................................     6,183
                                                                       --------
  POLAND (1.0%)
    NOTE (1.0%)
           *2,224  Republic of Poland Note, Zero Coupon, 1/08/97.....     2,003
                                                                       --------
  RUSSIA (17.9%)
    LOAN AGREEMENTS (11.2%)
 CHF  (b,k)15,000  Bank for Foreign Economic Affairs, (Floating
                     Rate)...........................................     5,672
 DEM  (b,k)46,000  Bank for Foreign Economic Affairs, (Floating
                     Rate)...........................................    16,248
                                                                       --------
                                                                         21,920
                                                                       --------
    BONDS (6.7%)
$           3,000  Ministry of Finance Tranche III, 3.00%, 5/14/99...     2,153
           25,450  Ministry of Finance Tranche IV, 3.00%, 5/14/03....    10,880
                                                                       --------
                                                                         13,033
                                                                       --------
                                                                         34,953
                                                                       --------
  SOUTH AFRICA (3.6%)
    BONDS (3.6%)
  ZAR       3,500  Republic of South Africa, Series 147, 11.50%,
                     5/30/00.........................................       744
           18,340  Republic of South Africa, Series 153, 13.00%,
                     8/31/10.........................................     3,737
            8,120  Republic of South Africa, Series 162, 12.50%,
                     1/15/02.........................................     1,733
            2,800  Republic of South Africa, Series 175, 9.00%,
                     10/15/02........................................       492
            2,100  Republic of South Africa, Series 177, 9.50%,
                     5/15/07.........................................       341
                                                                       --------
                                                                          7,047
                                                                       --------
  VENEZUELA (11.4%)
    BONDS (11.4%)
$           5,250  Republic of Venezuela Front Loaded Interest
                     Reduction Bond, Series A, 6.375%, 3/31/07.......     3,800
           26,000  Republic of Venezuela Debt Conversion Bonds,
                     Series DL, (Floating Rate), 6.625%, 12/18/07....    18,395
                                                                       --------
                                                                         22,195
                                                                       --------
TOTAL DEBT INSTRUMENTS (Cost $167,058)...............................   177,985
                                                                       --------
</TABLE>
 
The accompanying notes are an integral part of the financial statements. (Pages
                                    182-188)
 
- --------------------------------------------------------------------------------
Emerging Markets Debt Portfolio
 
                                      106
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
STATEMENT OF NET ASSETS (UNAUDITED)
JUNE 30, 1996
- --------------------------------------------------------------------------------
 
THE EMERGING MARKETS DEBT PORTFOLIO (CONT.)
- --------------------------------------------------------------------------------
 
<TABLE>
<CAPTION>
    NO. OF                                                               VALUE
  CONTRACTS                                                              (000)
<C>              <S>                                                 <C>
- ------------------------------------------------------------
PURCHASED OPTIONS (1.7%)
  POLAND (0.0%)
    (a)120,000   Poland Past Due Loan Put Option, expiring 7/29/96,
                   strike price U.S.$73.19, (Cost U.S.$84).........  $           16
                                                                     --------------
  RUSSIA (1.7%)
     (a)10,500   Russian Vnesh Call, expiring 7/22/96, strike price
                   DEM45.13, (Cost U.S.$254).......................             618
     (a)31,000   Russian Vnesh Loans, expiring 7/22/96, strike
                   price U.S.$41.31, (Cost U.S.$1,070).............           2,710
                                                                     --------------
                                                                              3,328
                                                                     --------------
TOTAL PURCHASED OPTIONS (Cost $1,408)..............................           3,344
                                                                     --------------
</TABLE>
 
<TABLE>
<CAPTION>
     FACE
    AMOUNT
     (000)
- ---------------
<C>              <S>                                                 <C>
STRUCTURED SECURITY (4.1%)
  UNITED STATES
    NOTE (4.1%)
$      (s)8,000  Salomon Brothers Short-Term Structured Note,
                   10.125%, 4/02/97
                   (Principal is composed of National Treasury
                   Notes, issued by the National Treasury of
                   Brazil, valued at approximately U.S. $8,000.)
                   (Cost $8,000)...................................       8,020
                                                                     ----------
SHORT-TERM INVESTMENTS (12.2%)
  MEXICO (6.3%)
    BILLS (6.3%)
  MXP    19,994  Mexican Cetes, Zero Coupon, 7/18/96...............       2,593
         41,820  Mexican Cetes, Zero Coupon, 8/08/96...............       5,330
         35,000  Mexican Cetes, Zero Coupon, 9/26/96...............       4,274
                                                                     ----------
                                                                         12,197
                                                                     ----------
  TURKEY (1.2%)
    BILLS (1.2%)
TRL 204,000,000  Turkish T-Bill, Zero Coupon, 7/10/96..............       2,414
                                                                     ----------
  UNITED STATES (4.7%)
    REPURCHASE AGREEMENT (4.7%)
$         9,246  Chase Securities, Inc., 5.15%, dated 6/28/96, due
                   7/01/96, to be repurchased at $9,250,
                   collateralized by $9,085 U.S. Treasury Notes,
                   7.125%, due 9/30/99, valued at $9,288 (Cost
                   $9,246).........................................       9,246
                                                                     ----------
TOTAL SHORT-TERM INVESTMENTS (Cost $26,715)........................      23,857
                                                                     ----------
FOREIGN CURRENCY (1.9%)
TRL 298,720,000  Turkish Lira (Cost $3,652)........................       3,638
                                                                     ----------
</TABLE>
 
<TABLE>
<CAPTION>
                                                                     VALUE
                                                                     (000)
 
- ------------------------------------------------------------
<S>                                                 <C>           <C>
TOTAL INVESTMENTS (111.2%) (Cost $206,833).....................      $216,844
                                                                  -----------
OTHER ASSETS (19.9%)
  Cash............................................  $     2,865
  Collateral on Deposit with Broker...............       16,010
  Receivable for Investments Sold.................       12,878
  Receivable due from Broker......................        3,450
  Interest Receivable.............................        3,179
  Receivable for Portfolio Shares Sold............          540
  Other...........................................           14        38,936
                                                    -----------
LIABILITIES (-31.1%)
  Payable for Investments Purchased...............      (21,868)
  Securities Sold Short, at Value                       (20,736)
   (Proceeds $19,510).............................
  Payable for Reverse Repurchase Agreement........      (16,465)
  Investment Advisory Fees Payable................         (447)
  Payable for Portfolio Shares Redeemed...........          (62)
  Custodian Fees Payable..........................          (59)
  Administrative Fees Payable.....................          (25)
  Interest Payable on Securities Sold Short.......          (25)
  Net Unrealized Loss on Forward Foreign Currency            (5)
   Exchange Contracts.............................
  Directors' Fees and Expenses Payable............           (3)
  Other Liabilities...............................       (1,035)      (60,730)
                                                    -----------   -----------
NET ASSETS (100%)..............................................      $195,050
                                                                  -----------
                                                                  -----------
NET ASSETS CONSIST OF:
Paid in Capital................................................   $   158,343
Undistributed Net Investment Income............................        10,230
Accumulated Net Realized Gain..................................        17,843
Unrealized Appreciation on Investments, Foreign Currency                8,634
  Translations and Securities Sold Short.......................
                                                                  -----------
NET ASSETS.....................................................      $195,050
                                                                  -----------
                                                                  -----------
</TABLE>
 
The accompanying notes are an integral part of the financial statements. (Pages
                                    182-188)
 
- --------------------------------------------------------------------------------
                                                 Emerging Markets Debt Portfolio
 
                                      107
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
STATEMENT OF NET ASSETS (UNAUDITED)
JUNE 30, 1996
- --------------------------------------------------------------------------------
 
THE EMERGING MARKETS DEBT PORTFOLIO (CONT.)
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>
                                                                    AMOUNT
                                                                     (000)
- ------------------------------------------------------------
<S>                                                 <C>           <C>
CLASS A:
NET ASSETS.....................................................      $191,976
NET ASSET VALUE, OFFERING AND REDEMPTION
  PRICE PER SHARE
  Applicable to 18,885,791 outstanding $0.001 par value
  shares (authorized 500,000,000 shares).......................        $10.17
                                                                  -----------
                                                                  -----------
CLASS B:
NET ASSETS.....................................................        $3,074
NET ASSET VALUE, OFFERING AND REDEMPTION
  PRICE PER SHARE
  Applicable to 302,828 outstanding $0.001 par value
  shares (authorized 500,000,000 shares).......................        $10.15
                                                                  -----------
                                                                  -----------
</TABLE>
 
- ------------------------------------------------------------
 
<TABLE>
<S>        <C>        <C>
(a)           --      Non-income producing security
(b)           --      Non-income producing security -- in default
(d)           --      Security (Totaling $9,961 or 5.1% of net assets at
                      June 30, 1996) valued at fair value -- See note A-1
                      to financial statements
(e)           --      144A security -- Certain conditions for public sale
                      may exist
(k)           --      Under restructuring at June 30, 1996 -- See note A-7
                      to financial statements
(l)           --      Participation interests were acquired through the
                      financial institutions listed parenthetically.
(s)           --      Denotes all or a portion of securities subject to
                      repurchase under Reverse Repurchase Agreements as of
                      June 30, 1996 -- See note A-4 to financial
                      statements
*             --      Security's redemption value is linked to the
                      Republic of Poland Treasury Bill maturing 1/01/97
                      and to the value of the Polish Zloty and Deutsche
                      Mark at maturity.
Q             --      Securities are expected to be received in connection
                      with the restructuring of the issuing country's loan
                      agreements owned by the Portfolio.
PDI           --      Past Due Interest
PIK           --      Payment-In-Kind. Income may be paid in additional
                      securities or cash at the discretion of the issuer.
CHF           --      Swiss Franc
DEM           --      Deutsche Mark
MXP           --      Mexican Peso
ZAR           --      South African Rand
Floating Rate -- Interest rate changes on these instruments are based on
              changes in a designated base rate. The rates shown are those
              in effect on June 30, 1996.
</TABLE>
 
<TABLE>
<CAPTION>
   FACE
  AMOUNT                                                          VALUE
  (000)                                                           (000)
<C>         <S>                                                 <C>
- ------------------------------------------------------------
SECURITIES SOLD SHORT (NOTE A-9)
  MEXICO
    BOND
$    5,000  United Mexican States Discount Bond, Series D,
              (Floating Rate) 6.453%, 12/31/19 (Value Recovery
              Rights Attached) (Proceeds $3,500)..............  $    3,937
                                                                ----------
  PANAMA
    BONDS
Q(b)10,650  Republic of Panama Interest Reduction Bond,
              (Floating Rate), 12/29/49 (Proceeds $5,077).....       5,937
 Q(b)3,000  Republic of Panama Past Due Interest Bond, Zero
              Coupon, 12/29/49 (Proceeds $1,860)..............       1,840
                                                                ----------
                                                                     7,777
                                                                ----------
  RUSSIA
    LOAN AGREEMENTS
  (b)7,900  Bank for Foreign Economic Affairs
              (Proceeds $3,811)...............................       3,842
                                                                ----------
    NOTES
 Q(b)7,000  Interest Arrears Note, 12/31/99
              (Proceeds $3,844)...............................       3,745
 Q(b)4,000  Principal Notes, 12/31/99
              (Proceeds $1,418)...............................       1,435
                                                                ----------
                                                                     5,180
                                                                ----------
                                                                     9,022
                                                                ----------
TOTAL SECURITIES SOLD SHORT (Proceeds $19,510)................     $20,736
                                                                ----------
                                                                ----------
</TABLE>
 
- ------------------------------------------------
 
<TABLE>
<C>         <S>                                                 <C>
FORWARD FOREIGN CURRENCY EXCHANGE CONTRACT INFORMATION:
  Under the terms of forward foreign currency exchange contracts open at
  June 30, 1996, the Portfolio is obligated to deliver foreign currency in
  exchange for U.S. dollars as indicated below:
</TABLE>
 
<TABLE>
<CAPTION>
  CURRENCY                            IN EXCHANGE             NET UNREALIZED
 TO DELIVER     VALUE    SETTLEMENT       FOR        VALUE      GAIN (LOSS)
   (000)        (000)       DATE         (000)       (000)         (000)
- ------------  ---------  -----------  -----------  ---------  ---------------
<S>           <C>        <C>          <C>          <C>        <C>
TRL 298,720      $3,639   7/01/96     U.S.$ 3,634  $   3,634  $         (5   )
                                                                        --
                                                                        --
              ---------                            ---------
              ---------                            ---------
</TABLE>
 
The accompanying notes are an integral part of the financial statements. (Pages
                                    182-188)
 
- --------------------------------------------------------------------------------
Emerging Markets Debt Portfolio
 
                                      108
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
 
OVERVIEW
- --------------------------------------------------------------------------------
 
THE FIXED INCOME PORTFOLIO
 
COMPOSITION OF NET ASSETS (AT JUNE 30, 1996)
 
EDGAR REPRESENTATION OF DATA POINTS USED IN PRINTED GRAPHIC
 
<TABLE>
<S>                                      <C>
U.S. Government & Agency Obligations         63.2%
Foreign Government & Agency Obligations       7.5%
Corporate Bonds & Notes                      21.5%
Asset Backed Securities                       5.7%
Other                                         2.1%
</TABLE>
 
PERFORMANCE COMPARED TO THE LEHMAN AGGREGATE
BOND INDEX(1)
- -------------------------------------------
 
<TABLE>
<CAPTION>
                                             TOTAL RETURNS(2)
                           -----------------------------------------------------
                                                                      AVERAGE
                                                        AVERAGE        ANNUAL
                                                      ANNUAL FIVE      SINCE
                              YTD        ONE YEAR        YEARS       INCEPTION
                           ----------  ------------  -------------  ------------
<S>                        <C>         <C>           <C>            <C>
PORTFOLIO -- CLASS A.....      -0.92%        5.86%         8.24%          8.06%
PORTFOLIO -- CLASS
B(3).....................      -1.02       N/A            N/A           N/A
INDEX....................      -1.22         5.01          7.96           8.15
 
<FN>
 
1. The Lehman Aggregate Bond Index is an unmanaged index made up of the
   Government/Corporate Index, the Mortgage-Backed Securities Index and the
   Asset-Backed Securities Index.
 
2. Total returns for the Portfolio reflect expenses waived and reimbursed, if
   applicable, by the Adviser. Without such waiver and reimbursement, total
   returns would be lower.
 
3. The Portfolio began offering Class B shares on January 2, 1996.
</TABLE>
 
PAST PERFORMANCE IS NOT PREDICTIVE OF FUTURE PERFORMANCE.
 
- ------------------------------------------------------------
 
THE PERFORMANCE RESULTS PROVIDED ARE FOR INFORMATIONAL PURPOSES ONLY AND SHOULD
NOT BE CONSTRUED AS A GUARANTEE OF THE PORTFOLIO'S FUTURE PERFORMANCE. PAST
PERFORMANCE SHOWN IS NOT PREDICTIVE OF FUTURE PERFORMANCE. INVESTMENT RETURN AND
PRINCIPAL VALUE WILL FLUCTUATE SO THAT AN INVESTOR'S SHARES, WHEN REDEEMED, MAY
BE WORTH MORE OR LESS THAN THEIR ORIGINAL COST. YIELDS WILL FLUCTUATE AS MARKET
CONDITIONS CHANGE.
 
The Fixed Income Portfolio invests primarily in a diversified portfolio of U.S.
Government securities, corporate bonds (including competitively priced
Eurodollar bonds), mortgage-backed securities and other fixed income securities.
Targeted rates of return for the Portfolio are based on current and projected
market and economic conditions and on a conservative investment management
approach.
 
For the six month period ended June 30, 1996, the Portfolio had a total return
of -0.92% for the Class A shares and -1.02% for the Class B shares, as compared
to a total return of -1.22% for the Lehman Aggregate Bond Index. The average
annual total return for the twelve months and five years ended June 30, 1996 and
for the period from inception on May 15, 1991 through June 30, 1996 was 5.86%,
8.24%, and 8.06% respectively, for the Class A shares, as compared to 5.01%,
7.96% and 8.15%, respectively, for the Index. As of June 30, 1996, the Portfolio
had an SEC 30-day yield of 6.59% for the Class A shares and 6.44% for the Class
B shares.
 
Although bond market returns for the second quarter of 1996 improved relative to
those of the first quarter, the fixed income markets nonetheless continued to
disappoint investors. Bond yields maintained their upward trend over the first
half, rising by almost 1 percent for long U.S. Treasury issues. As a result, the
Lehman Aggregate Bond Index returned -1.22% and the Lehman Government/Corporate
Index returned -1.88% for the first half of 1996.
 
The ongoing backup in bond yields was a straightforward response to economic
considerations. Over the course of the first half, the markets received multiple
signals that the economy was growing strongly. While the signs of a growth
pick-up in the first quarter were sometimes attributed to one-time factors or
dismissed by the markets as unsustainable, the evidence of strong economic
momentum in the second quarter was consistent and powerful.
 
The monthly employment reports drew the most attention from the markets. The
three reports released during the second quarter not only showed job growth
continuing at much higher levels than had been the case for most of 1995, but
each report showed gains above consensus expectations. As a result, each release
of the employment report was followed by a sharp rise in yields. Cumulatively,
10-year Treasury yields rose 40 basis points on the three days that the
employment reports were released during the second quarter.
 
In addition to the employment data, other economic indicators also showed
strength. Housing and autos,
 
- --------------------------------------------------------------------------------
                                                          Fixed Income Portfolio
 
                                      109
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
 
OVERVIEW
- --------------------------------------------------------------------------------
THE FIXED INCOME PORTFOLIO (CONT.)
the two-sectors of the economy thought to be most cyclical and therefore most
likely to slow in response to rising interest rates, were particularly strong.
The manufacturing sector also appeared to have bottomed and began to recover
during the second quarter.
 
As the strength in the economy became evident, yield levels increasingly began
to reflect expectations of a Federal Reserve tightening. Short rates rose more
than long rates over the second quarter, with the yield curve flattening by 15
basis points between two years and thirty years. From its steepest point in mid-
February, the yield curve has flattened almost 60 basis points through the end
of June. While two-year yields were almost 50 basis points below the Federal
Funds rate earlier in the year, they finished the first half almost 90 basis
points above the Fed Funds rate, reflecting concerns that the Fed would need to
tighten to slow economic growth.
 
Despite the strength in the economy, not all market participants are convinced
the Fed will tighten. Those who argue against a tightening point out that the
economic strength has not translated into higher inflation. Moreover, they
expect that increases in market interest rates to date may be sufficient on
their own to slow the economy. On the other hand, with the economy arguably at
full employment and growing well above trend, the risks of an increase in
inflation may be sufficiently high that the Fed simply cannot wait to see
whether the economy loses momentum on its own, but rather is forced to tighten.
 
From a sector standpoint, the major non-Treasury sectors performed reasonably
well over the first half. Despite some quarter end selling pressure, corporate
spreads generally tightened over the six month period, reflecting both favorable
credit trends and market technicals. Mortgage-backed securities also tightened
in spread. As the vast majority of the mortgage sector came to trade at a
discount dollar price, an increasing number of investors came to focus on the
value represented by this sector relative to the tight spreads in the corporate
market. The asset-backed sector also outperformed comparable duration Treasuries
despite concerns over rising delinquencies on credit card receivables.
 
Foreign bond markets continued to outperform the U.S. bond market. For example,
10-year German yields only rose about 37 basis points during the first half of
1996 compared with an increase of over 110 basis points for 10-year U.S.
Treasury issues. Other foreign bond markets provided even better results, with
yields on most European markets actually declining over the second quarter of
1996.
 
FIRST HALF STRATEGY REVIEW
 
During the first half, we maintained a neutral duration in the Portfolio
relative to our benchmark. While the market trend and economic data might have
suggested a shorter duration posture, market valuations suggested that the risks
associated with taking such a position were high. Instead we focused on sector
allocation, which we felt presented a better risk/ reward tradeoff. In
particular, we saw good value in discount mortgage-backed securities and
increased exposure to this sector. Within the mortgage sector, we also focused
extensively on maturity selection as fine-tuning of maturities can have
significant impact on value within the sector. Our corporate weightings were
fairly stable over the first half as generally tight spreads limited
opportunities to find attractive values within this sector. Finally, we
continued to maintain an exposure to hedged German bonds. Although German bonds
have substantially outperformed U.S. bonds year-to-date and our exposure is
therefore lower than it was at the start of the year, we believe fundamentals
continue to favor German bonds over U.S. bonds.
 
THIRD QUARTER OUTLOOK
 
Our Portfolio begins the third quarter with neutral duration relative to our
benchmark. Although rates have risen significantly and currently price in an
expectation of roughly 50 basis points of Fed tightening, we do not anticipate
increasing duration in the near-term. Unless clear evidence emerges that
economic growth is returning to a below trend path, we see limited scope for the
market to sustain a rally. We will continue to focus on sector opportunities,
particularly in the mortgage-backed area, to add value to our Portfolio.
Discount mortgages offer attractive yield spreads relative to corporate bonds
and their low dollar prices greatly reduce the convexity concerns traditionally
associated with the sector. We expect this sector to perform well over the
quarter.
 
Warren Ackerman, III
PORTFOLIO MANAGER
 
July 1996
 
- --------------------------------------------------------------------------------
Fixed Income Portfolio
 
                                      110
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
STATEMENT OF NET ASSETS (UNAUDITED)
JUNE 30, 1996
- --------------------------------------------------------------------------------
 
THE FIXED INCOME PORTFOLIO
 
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>
   FACE
  AMOUNT                                                          VALUE
  (000)                                                           (000)
- ------------------------------------------------------------
<C>         <S>                                                 <C>
FIXED INCOME SECURITIES (97.9%)
  U.S. GOVERNMENT AND AGENCY OBLIGATIONS (63.2%)
    U.S. TREASURY NOTES (28.0%)
$   13,000  8.25%, 7/15/98....................................  $   13,514
    19,500  6.25%, 5/31/00....................................      19,375
    11,000  7.25%, 8/15/04....................................      11,394
                                                                ----------
                                                                    44,283
                                                                ----------
    FEDERAL HOME LOAN MORTGAGE CORPORATION (0.8%)
       349  9.50%, 2/01/03....................................         364
       628  8.00%, 6/01/06....................................         641
        85  8.00%, 1/01/09....................................          87
        84  9.00%, 11/01/09...................................          88
        91  8.00%, 8/01/10....................................          94
        13  13.00%, 9/01/10...................................          14
                                                                ----------
                                                                     1,288
                                                                ----------
    FEDERAL NATIONAL MORTGAGE ASSOCIATION (16.9%)
     4,807  6.00%, 9/01/10....................................       4,545
     5,813  6.00%, 2/01/11....................................       5,497
     1,700  6.00%, 5/01/11....................................       1,608
     2,320  6.00%, 5/01/11....................................       2,194
     (d)12  14.75%, 10/01/12..................................          13
     4,000  7.00%, 7/01/16....................................       3,946
     9,625  6.50%, 4/01/24....................................       9,002
                                                                ----------
                                                                    26,805
                                                                ----------
    GOVERNMENT NATIONAL MORTGAGE ASSOCIATION (17.5%)
       205  7.00%, 7/15/08....................................         204
       348  7.00%, 12/15/08...................................         344
         9  11.00%, 12/15/15..................................          10
        14  10.00%, 5/15/19...................................          16
       611  9.50%, 8/15/19....................................         656
     7,703  6.00%, 2/15/24....................................       7,012
     9,267  7.00%, 5/15/24....................................       8,922
     7,970  7.00%, 3/15/26....................................       7,641
     3,015  7.50%, 5/15/26....................................       2,972
                                                                ----------
                                                                    27,777
                                                                ----------
  TOTAL U.S. GOVERNMENT AND AGENCY OBLIGATIONS................     100,153
                                                                ----------
  FOREIGN GOVERNMENT AND AGENCY OBLIGATIONS (7.5%)
    13,500  Treuhandanstalt 6.75%, 5/13/04....................       9,066
     3,000  Quebec Province (Yankee) 7.50%, 7/15/23...........       2,871
                                                                ----------
  TOTAL FOREIGN GOVERNMENT AND AGENCY OBLIGATIONS.............      11,937
                                                                ----------
 
<CAPTION>
   FACE
  AMOUNT                                                          VALUE
  (000)                                                           (000)
- ------------------------------------------------------------
<C>         <S>                                                 <C>
 
  CORPORATE BONDS AND NOTES (21.5%)
    FINANCE (20.6%)
$    2,000  Capital One Bank 6.73%, 6/04/98...................  $    2,003
  (e)7,500  Farmers Insurance 8.625%, 5/01/24.................       7,134
     5,000  Ford Motor Credit Co. 6.25%, 11/08/00.............       4,877
     5,000  General Motors Acceptance Corp. 7.375%, 6/22/00...       5,100
     5,000  Goldman Sachs Group 6.25%, 2/01/03................       4,725
     3,215  Lehman Brothers Holdings, Inc. 5.75%, 2/15/98.....       3,172
     3,000  Lehman Brothers Holdings, Inc. 7.25%, 4/15/03.....       2,971
  (e)2,500  Lumbermens Mutual Casualty Co., Series AI, 9.15%,
              7/01/26.........................................       2,584
                                                                ----------
                                                                    32,566
                                                                ----------
    TELECOMMUNICATIONS (0.9%)
     1,500  Tele-Communications, Inc. 8.25%, 1/15/03..........       1,516
                                                                ----------
  TOTAL CORPORATE BONDS AND NOTES.............................      34,082
                                                                ----------
  ASSET BACKED SECURITIES (5.7%)
        18  Federal Home Loan Mortgage Corp., REMIC 16-B,
              10.00%, 10/15/19................................          18
        15  Federal National Mortgage Association, REMIC
              92-59F, (Floating Rate), 5.862%, 8/25/06........          15
       100  Ford Credit Auto Loan Master Trust, 92-1A, 6.875%,
              1/15/99.........................................         101
        63  ML Asset Backed Corporation, Series 1993-1, Class
              A2, 5.125%, 7/15/98.............................          63
     3,648  Resolution Trust Corp., Series 1991-M5,
              Class A, 9.00%, 3/25/17.........................       3,718
     5,000  Standard Credit Card Trust 6.75%, 6/07/00.........       5,031
                                                                ----------
  TOTAL ASSET BACKED SECURITIES...............................       8,946
                                                                ----------
TOTAL FIXED INCOME SECURITIES (97.9%)(Cost $155,325)..........     155,118
                                                                ----------
SHORT-TERM INVESTMENT (3.5%)
  REPURCHASE AGREEMENT (3.5%)
     5,507  Goldman Sachs & Co., 5.375%, dated 6/28/96, due
              7/01/96, to be repurchased at $5,509,
              collateralized by $5,365 U.S. Treasury Bonds,
              7.50%, due 11/15/16, valued at $5,623 (Cost
              $5,507).........................................       5,507
                                                                ----------
</TABLE>
 
The accompanying notes are an integral part of the financial statements. (Pages
                                    182-188)
 
- --------------------------------------------------------------------------------
                                                          Fixed Income Portfolio
 
                                      111
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
STATEMENT OF NET ASSETS (UNAUDITED)
JUNE 30, 1996
- --------------------------------------------------------------------------------
 
THE FIXED INCOME PORTFOLIO (CONT.)
- --------------------------------------------------------------------------------
 
<TABLE>
<CAPTION>
                                                                  VALUE
                                                                  (000)
<S>                                                 <C>         <C>
- ------------------------------------------------------------
TOTAL INVESTMENTS (101.4%) (Cost $160,832)....................    $160,625
                                                                ----------
OTHER ASSETS (1.2%)
  Cash............................................  $        1
  Interest Receivable.............................       2,019
  Other...........................................          18       2,038
                                                    ----------
LIABILITIES (-2.6%)
  Payable for Investments Purchased...............      (3,930)
  Payable for Portfolio Shares Redeemed...........        (200)
  Investment Advisory Fees Payable................         (78)
  Net Unrealized Loss on Forward Foreign Currency          (26)
   Exchange Contracts.............................
  Administrative Fees Payable.....................         (21)
  Custodian Fees Payable..........................          (6)
  Directors' Fees and Expenses Payable............          (3)
  Distribution Fees Payable.......................          (1)
  Other Liabilities...............................         (29)     (4,294)
                                                    ----------  ----------
NET ASSETS (100%).............................................    $158,369
                                                                ----------
                                                                ----------
NET ASSETS CONSIST OF:
Paid in Capital...............................................  $  163,665
Undistributed Net Investment Income...........................       1,550
Accumulated Net Realized Loss.................................      (6,613)
Unrealized Depreciation on Investments and Foreign Currency           (233)
  Translations................................................
                                                                ----------
NET ASSETS....................................................    $158,369
                                                                ----------
                                                                ----------
CLASS A:
NET ASSETS....................................................    $157,098
NET ASSET VALUE, OFFERING AND REDEMPTION
  PRICE PER SHARE
  Applicable to 14,986,137 outstanding $0.001 par value shares
  (authorized 500,000,000 shares).............................      $10.48
                                                                ----------
                                                                ----------
CLASS B:
NET ASSETS....................................................      $1,271
NET ASSET VALUE, OFFERING AND REDEMPTION
  PRICE PER SHARE
  Applicable to 121,359 outstanding $0.001 par value shares
  (authorized 500,000,000 shares).............................      $10.47
                                                                ----------
                                                                ----------
</TABLE>
 
- ------------------------------------------------------------
FORWARD FOREIGN CURRENCY EXCHANGE CONTRACT INFORMATION:
  Under the terms of forward foreign currency exchange contracts open at June
  30, 1996, the Portfolio is obligated to deliver foreign currency in exchange
  for U.S. dollars as indicated below:
 
<TABLE>
<CAPTION>
                                        IN                        NET
CURRENCY TO                          EXCHANGE                 UNREALIZED
  DELIVER      VALUE    SETTLEMENT      FOR        VALUE      GAIN (LOSS)
   (000)       (000)       DATE        (000)       (000)         (000)
- -----------  ---------  ----------  -----------  ---------  ---------------
<S>          <C>        <C>         <C>          <C>        <C>
  DEM  940   $     621     9/09/96  U.S.$   642  $     642     $      21
 DEM 8,050       5,348    11/29/96  U.S.$ 5,314      5,314           (34)
 DEM 5,400       3,587    11/29/96  U.S.$ 3,574      3,574           (13)
             ---------                           ---------           ---
             $   9,556                           $   9,530     $     (26)
             ---------                           ---------           ---
             ---------                           ---------           ---
</TABLE>
 
- ------------------------------------------------------------
 
<TABLE>
<S>        <C>        <C>
(d)        --         Security valued at fair value -- See note A-1 to
                      financial statements
(e)        --         144A Security -- Certain conditions for public
                      sale may exist
REMIC      --         Real Estate Mortgage Investment Conduit
Floating Rate -- Interest rate changes on these instruments are based
              on changes in a designated base rate. The rates shown are
              those in effect on June 30, 1996.
</TABLE>
 
The accompanying notes are an integral part of the financial statements. (Pages
                                    182-188)
 
- --------------------------------------------------------------------------------
Fixed Income Portfolio
 
                                      112
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
 
OVERVIEW
- --------------------------------------------------------------------------------
 
THE GLOBAL FIXED INCOME PORTFOLIO
 
COMPOSITION OF NET ASSETS (AT JUNE 30, 1996)
 
EDGAR REPRESENTATION OF DATA POINTS USED IN PRINTED GRAPHIC
 
<TABLE>
<S>                   <C>
Australian Dollar          2.7%
British Pound              7.0%
Canadian Dollar            2.8%
Danish Krone               6.2%
Deutsche Mark             14.8%
French Franc               3.1%
Italian Lira               5.8%
Japanese Yen               7.9%
Netherlands Guilder        3.5%
Spanish Peseta             1.0%
Swedish Krona              7.7%
United States Dollar      22.6%
Other                     14.9%
</TABLE>
 
PERFORMANCE COMPARED TO THE J.P. MORGAN TRADED
GLOBAL BOND INDEX(1)
- --------------------------------------------
 
<TABLE>
<CAPTION>
                                          TOTAL RETURNS(2)
                        -----------------------------------------------------
                                                                   AVERAGE
                                                     AVERAGE        ANNUAL
                                                     ANNUAL         SINCE
                           YTD        ONE YEAR     FIVE YEARS     INCEPTION
                        ----------  ------------  -------------  ------------
<S>                     <C>         <C>           <C>            <C>
PORTFOLIO -- CLASS
A.....................       0.20%        6.23%         8.67%          8.10%
PORTFOLIO -- CLASS
B(3)..................       0.02          N/A           N/A            N/A
INDEX.................      -1.16         2.05         10.31           9.68
 
<FN>
 
1. The J.P. Morgan Traded Global Bond Index is an unmanaged index of securities
   and includes Australia, Belgium, Canada, Denmark, France, Germany, Italy,
   Japan, The Netherlands, Spain, Sweden, the United Kingdom and the United
   States.
 
2. Total returns for the Portfolio reflect expenses waived and reimbursed, if
   applicable, by the Adviser. Without such waiver and reimbursement, total
   returns would be lower.
 
3. The Portfolio began offering Class B shares on January 2, 1996.
</TABLE>
 
PAST PERFORMANCE IS NOT PREDICTIVE OF FUTURE PERFORMANCE.
 
- ------------------------------------------------------------
 
THE COUNTRY SPECIFIC PERFORMANCE RESULTS PROVIDED ARE FOR INFORMATIONAL PURPOSES
ONLY AND SHOULD NOT BE CONSTRUED AS A GUARANTEE OF THE PORTFOLIO'S FUTURE
PERFORMANCE. PAST PERFORMANCE SHOWN IS NOT PREDICTIVE OF FUTURE PERFORMANCE.
INVESTMENT RETURN AND PRINCIPAL VALUE WILL FLUCTUATE SO THAT AN INVESTOR'S
SHARES, WHEN REDEEMED, MAY BE WORTH MORE OR LESS THAN THEIR ORIGINAL COST.
PLEASE SEE THE PROSPECTUS FOR A DESCRIPTION OF CERTAIN RISK CONSIDERATIONS
ASSOCIATED WITH INTERNATIONAL INVESTING. YIELDS WILL FLUCTUATE AS MARKET
CONDITIONS CHANGE.
 
The Global Fixed Income Portfolio aims to produce an attractive rate of return
by investing in fixed income securities issued by governments, agencies,
supranational entities and corporations with varying maturities in various
currencies.
 
For the six month period ended June 30, 1996, the Portfolio had a total return
of 0.20% for the Class A shares and 0.02% for the Class B shares, as compared to
a total return of -1.16% for the J.P. Morgan Traded Global Bond Index. The
average annual total return for the twelve month and five year periods ended
June 30, 1996 and for the period from inception on May 1, 1991 through June 30,
1996 was 6.23%, 8.67% and 8.10%, respectively, for the Class A shares, as
compared to 2.05%, 10.31% and 9.68%, respectively, for the Index. As of June 30,
1996, the Portfolio had an SEC 30-day yield of 5.78% for the Class A shares and
5.63% for the Class B shares.
 
FIXED INCOME MARKETS
 
Global fixed income markets produced generally mediocre returns in the first
half of 1996, with only a few exceptions. More specifically, European bonds did
best, followed by Japan with the dollar bloc markets pulling up the rear; in
local currency terms, returns ranged from -2.4% in New Zealand to 11.2% in
Italy. First quarter returns were significantly weaker than in the second as
upward pressure on yields (which rose substantially in the first quarter)
moderated in the second quarter, although yields still rose in most countries.
Markets remain worried about strong economic growth, rising inflation and
tighter monetary policy; economic activity indicators released in the second
quarter have showed growth picking up in all major regions. And, if the United
States, German and Japanese economies are truly once again growing in
synchronized fashion, there is a much higher chance that central banks will have
to respond with higher interest rates to choke off incipient inflationary
pressures.
 
U.S. Treasury bonds were the second worst performing bond market in the world,
returning a desultory -1.4%. Ten-year yields rose approximately 75 basis points
in the first quarter and another 38 basis points in the second. All maturity
classes underperformed cash with a steeper yield curve further hurting the
performance of longer dated bonds. Corporate bonds and mortgage backed
securities outperformed Treasuries: corporate bond spreads remain tight but show
no signs of widening; mortgages had a good second quarter as volatility in the
bond market declined. The key 30-year bond traded in a yield range of 6.6% to
7.2% with a weakening bias.
 
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                                                   Global Fixed Income Portfolio
 
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OVERVIEW
- --------------------------------------------------------------------------------
THE GLOBAL FIXED INCOME PORTFOLIO (CONT.)
 
U.S. bonds started the year well. Economic activity was perceived to be weak and
the Fed was still cutting interest rates. Indeed, the Fed cut rates for the
third time in January by 25 basis points, bringing the Federal funds rate down
to 5.25%. However, the economic data flow changed dramatically after January.
Employment growth in particular was notable, showing a clear accelerating trend.
Activity indicators such as industrial production, auto sales and housing starts
also began to show an economy rebounding quite smartly from its end of 1995
depressed levels. As such, second quarter GDP growth is expected to be well over
4%. This rebound has fueled speculation that the Federal Reserve Bank would have
to raise interest rates before too long, especially once the unemployment rate
fell below 5.7%. Some comfort was taken by the benign inflation background,
although there was some disquiet as labor cost indicators began to show an
acceleration from 1995 levels (not something unexpected given the low level of
unemployment).
 
The U.S. market will continue to assess the strength of the economy, looking for
signs of moderation in the second half of the year. If the economy shows no
signs of returning to trend growth of 2.5%, the market's expectations of
monetary tightening will grow further and yields will correspondingly rise.
However, there is every prospect that the market driven tightening in yields
will begin to slow the interest rate sensitive sectors of the economy and
prevent the need for a dramatic tightening by the Fed.
 
The Portfolio has been underweight U.S. bonds throughout the first half of the
year with a duration position slightly short to neutral of the market. Mortgage
backed securities have also been overweighted. On the other hand, the Portfolio
has been overweight Canadian and Australian bonds which have outperformed their
U.S. counterparts. The bellwether 10-year Canadian/U.S. 10-year yield spread
narrowed below 100 basis points in the second quarter with money market yields
in Canada moving decidedly below those in the U.S. for the first time in over a
decade. The Canadian economy has surprisingly been much weaker than the U.S.
economy and inflation very subdued, allowing the Canadian central bank to lower
interest rates substantially. A much improved fiscal situation has also helped.
Canadian bonds had a first half total return of 1.3% (an outperformance over
U.S. Treasuries of 2.7%). Further outperformance of Canadian bonds should be a
much lower order of magnitude as the scope for further yield convergence is
limited. However, the added yield, steeper yield curve continue to make this
market attractive. Australian bond yield spreads to U.S. Treasuries also
narrowed. Australian bonds have been bolstered by the strength in the currency,
prospective fiscal tightening, a favorable inflation trend and their substantial
yield. At the end of the second quarter 10-year Australian government bonds
yielded 200 basis points more than 10-year U.S. Treasuries. Hampered by the
world's only inverted yield curve (3-month rates higher than 10-year yields),
political risk and rising inflation, New Zealand turned in the world's worst
bond market performance in local currency terms, returning -2.4%. With money
market rates in the neighborhood of 10% it will be difficult for New Zealand
bonds to do well.
 
Japanese bond returns continue to be constrained by their low yield and low
capital gains prospects. While the total return in local currency terms was only
0.9% in the first half of the year, 10-year yields rose only 16 basis points,
avoiding much of the sell off that occurred in the rest of the world. As in all
markets, the second quarter produced better returns than the first. Ten-year
yields did reach a high of 3.5% at the end of February when the Finance Minister
made comments that implied that savers were suffering from the Bank of Japan's
low interest rate policy. This was unwound in fairly short order following a
weaker than expected business expectations survey. Generally speaking, the
market was supported by domestic investors who were attracted to longer maturity
bonds due to the steepness of the yield curve, perceived weakness in the economy
and expectations that short rates would remain low, and by a lack of selling
from the international investment community who were substantially underweight
yen bonds.
 
While Japanese yields have not risen much compared to what occurred in the rest
of the world, they are at risk to move higher. The economy is benefiting from
significant economic stimulus resulting from low interest rates and loose fiscal
policy. Signs of this flowing through was indicated in the first quarter GDP
report which was much stronger than anticipated as was the latest June business
expectations survey. Looking forward, the stronger growth profile has elevated
Bank of Japan tightening risk. We believe yields will rise in anticipation of a
tightening and that the market remains vulnerable to stronger economic data.
However, on the positive side, inflation is very low and given the continued
problems in the financial system with regard to bad loan write-off's, it is
possible that short rates do not go up until late this year or early next year
which will likely put a lid on how high
 
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                                      114
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OVERVIEW
- --------------------------------------------------------------------------------
THE GLOBAL FIXED INCOME PORTFOLIO (CONT.)
longer maturity bond yields can rise. The Portfolio has maintained an
underweight position in yen bonds throughout the first half of the year. Two
adjustments were made in this underweight position during this period. One was
to increase exposure after the February sell off and the second was to reduce
exposure after Japanese bonds put in a strong performance in May.
 
European bonds have been the stellar performers on a relative and absolute
basis. The fundamental backdrop for bonds has remained friendly throughout the
first half of the year, although clouds are beginning to gather on the horizon.
European bond market performance can be segmented into four groups: (1) Germany
and the Netherlands; (2) France, Belgium and Denmark; (3) Italy, Spain and
Sweden; and (4) the United Kingdom. Yield convergence has been the dominant
theme in Europe as yield spreads compressed down towards German levels.
Expectations that European monetary union will occur in some form has bolstered
the non-Germanic markets. The best performers have been the highest yielding
markets, Italy, Spain and Sweden. They returned 11.2%, 9.1% and 6.61%,
respectively, in local currency terms for the first half of the year.
 
Italian bonds have rallied in response to fiscal tightening, weakening economic
conditions, new found political stability, a strong currency, falling inflation
and unwinding of the risk premiums built up since the lira was ejected from the
ERM in September 1992. However, with 10-year yield spreads to German bonds below
300 basis points, scope for further outperformance is much more limited. Spanish
bonds have benefited from similar factors. In Spain, the market has been further
bolstered by a more significant deceleration in inflation allowing the central
bank to ease monetary policy aggressively. A new conservative government is also
helping market confidence. As in Italy, Spanish yield spreads to Germany have
narrowed considerably. With the 10-year yield spread to Germany below 250 basis
points it will be difficult for Spanish bonds to perform better than German ones
unless the inflation differential to Germany narrows appreciably. The Swedish
market has, in our opinion, the best fundamentals. Inflation is down to 1% and
is still falling; the central bank has cut interest rates over 200 basis points
year-to-date and more is likely; and fiscal policy is the tightest in the world.
There is more scope for Swedish outperformance, especially with respect to the
Italian and Spanish markets. The Portfolio has been overweight this sector of
its European portfolio all year with some rotation among the higher yielding
markets. We have reduced our overweights in Italy and Spain and transferred them
to Sweden as Italy and Spain have outperformed in the last two months.
 
The French, Danish and Belgian markets have also continued to perform relatively
well, returning 4.4%, 3.2% and 3.3%, respecitvely, in local currency terms. They
have benefited from the same factors as the higher yielding European markets. As
such, French yield differentials with Germany have evaporated in the longer
maturities. Belgian yield spreads have also fallen to historical lows. High
confidence that both the French and Belgian francs will participate in monetary
union with the Deutschemark and continued support of domestic investors will
keep the yield spread to German bonds narrow. However, it is very difficult to
imagine French and Belgian yields trading much lower relative to Germany. Danish
bonds have lagged a bit despite their higher yields due to uncertainty over the
Danish krone's status. Denmark has opted out of monetary union and is being
penalized for it. We view the risk premium as too high and prefer it to France
and Belgium. The portfolio is underweight, as a group, these three countries
given the narrowness of their respective yield spreads to German bonds.
 
The British bond market had been the laggard among the Europeans until late in
the second quarter. Overall, the bond market returned 1.25% in local currency
terms, outpacing Germany modestly. However, this was a big recovery. The first
quarter return was -2.2%, the worst performance in the world. The gilt market
suffered in the first quarter from the government's precarious parliamentary
circumstances, the more advanced economic position relative to the continent
(e.g., faster growth, higher inflation risk) and the possible consequences of
the BSE beef scare. During the second quarter, sterling rebounded, the BSE scare
turned out to be a tempest in a teapot, at least macroeconomically, inflation
surprised on the low side, short rates were cut and UK manufacturing weakened
much more than expected. With investors -- domestic and international -- lightly
invested, there was plenty of room for outperformance. Looking forward, we see
the gilt market as an average performer. The Portfolio has been neutral on the
gilt market year-to-date.
 
The German and its close substitute the Netherlands markets have been the worst
performers in Europe, returning 0.97% and 1.15% in local currency terms
respectively. These markets have been hit the hardest by the sell off in the
U.S. Treasury market. Despite the better inflation picture (inflation is at
least 1.5%
 
- --------------------------------------------------------------------------------
                                                   Global Fixed Income Portfolio
 
                                      115
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OVERVIEW
- --------------------------------------------------------------------------------
THE GLOBAL FIXED INCOME PORTFOLIO (CONT.)
lower in Germany than in the U.S.) and weaker economic environment, it has been
difficult for longer maturity German bonds to decouple from the U.S. market.
Germany did continue to cut interest rates in the first half of the year with
the discount rate falling another 50 basis points to a historic low of 2.5%.
Market rates fell by a similar amount.
 
The German bond's travails have not all been foreign in origin. Some homegrown
problems include an unexpected surge in monetary growth and stronger than
expected economic data. With the Bundesbank explicitly targeting M3 growth,
faster growth has put a damper on hopes for further monetary ease. In addition,
after a very poor first quarter when German GDP went negative for the second
quarter in a row, second quarter economic statistics turned much more robust,
implying that earlier weakness was exaggerated. Lastly, increased confidence
that monetary union will occur, implying that the Deutschemark will be replaced
by the Euro, has led to a higher risk premium on longer dated German securities.
The next move in German official rates is probably up but it will most likely
not occur until 1997. In the meantime, the steepness of the yield curve,
reasonably high real interest rates and moderate economic growth will prevent
yields from rising too much even if the U.S. bond market continues to sell off.
The Portfolio has been overweight German bonds to compensate for the underweight
U.S. bond position.
 
The current economic environment is rather uninspiring for fixed income. Global
economic growth has accelerated and shows no signs of fading in the second half.
Interest rates and inflation have bottomed in the major economies. However,
further sharp losses are unlikely from present yield levels. Yield curves are
steep, real yields, particularly in Europe, are attractive and some monetary
tightening is already factored into yield curves (unlike in January). In
addition, fiscal austerity is a theme across the OECD and promises to dampen
growth prospects. Inflation and interest rate trends continue to favor European
markets over the U.S. and Japan.
 
CURRENCIES
 
On the foreign exchange front, the U.S. dollar maintained its positive tone from
the first quarter. After rising 3% against the Deutschemark in the first
quarter, it rose another 3% in the second quarter; against the Japanese yen, it
rose only 2.6% in the second quarter following a 3.4% rise in the first. The
dollar traded in a DM/$1.48 - 1.55 range in the second quarter while moving
between Y/$105 - 110. Low volumes and volatilities characterized the latter part
of the second quarter.
 
The source of dollar strength has not changed much of the course of the first
half of the year. Cyclical factors regarding growth and interest rate
expectations continue to be dollar positive while official rhetoric was broadly
encouraging of further dollar strength. With demand conditions most robust and
inflationary risk the highest in the United States it makes good macroeconomic
sense to "redistribute" some of that strength to Europe and Japan through dollar
appreciation. In addition, soft monetary conditions abroad have offered
investors attractive hedging premiums to be in dollars while making it expensive
to bet against it. The yen did experience bouts of strength against both the
dollar and Deutschemark on the back of occasional fears that an interest rate
hike was nearby. But, with the Japanese current account shrinking rapidly and
the Bank of Japan ready to buy dollars on weakness, it is difficult to see the
yen sustaining much strength in the second half of the year. The Deutschemark
was also hurt by growing confidence that European monetary union would happen
which made investors more willing to overweight the other higher yielding
European currencies at the Deutschemark's expense. The Portfolio has and
continues to maintain overweight positions in the dollar against both the
Deutschemark and the yen. This has aided performance while the forward premiums
earned on hedging has boosted overall yield.
 
Within Europe, the Deutschemark continued to weaken on the European crosses. Its
trade weighted exchange rate ended the quarter 7% down from the highs of early
1995. The Italian lira rose approximately 10% against the Deutschemark due to
improving political and economic fundamentals and speculation of its return to
the ERM fold by the end of the year. Sterling strengthened nicely in the second
quarter, appreciating over 4% against the Deutschemark, to end the first half of
the year up over 6% versus the mark. The stronger dollar and perceptions of a
more advanced economic recovery relative to continental Europe outweighed
political uncertainty and lower short-term interest rates. The prospect of a
Labour government was not seen as having a serious effect on the currency but a
deteriorating current account remained a familiar concern. The Swiss franc
depreciated almost 2% against the mark in the second quarter on the back of a
weak economy and low interest rates. The franc remains, in our opinion, the most
overvalued currency in the world.
 
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Global Fixed Income Portfolio
 
                                      116
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OVERVIEW
- --------------------------------------------------------------------------------
THE GLOBAL FIXED INCOME PORTFOLIO (CONT.)
 
Among the other dollar bloc currencies both the Australian and New Zealand
dollars have done well although almost all of their rises versus the U.S. dollar
occurred in the first quarter. They rose 5.8% and 4.8%, respectively with over
80% of those moves occurring earlier in the year. The Australian dollar reached
a five year high in the beginning of the second quarter of USD/AUD 0.80 before
succumbing to profit taking. It was aided by global demand for its raw
materials, high nominal yields and capital inflows from Japan. It remains a
highly cyclical currency. The New Zealand dollar ended the second quarter little
changed after appreciating 4.2% in the first quarter. Political concerns and
controversy over the course of the economy and the appropriate stance of
monetary policy has hurt it. The Canadian dollar ended the first half of 1996
essentially unchanged. Two conflicting forces have essentially offset each
other. On the negative side, nominal interest rates are low; short-term rates in
Canada are over 50 basis points lower than in the U.S. On the positive side, the
currency is competitive; inflation is low (1.5%); deficits are falling; and the
current account deficit is shrinking.
 
Currency developments this year have had the effect of unwinding the dramatic
moves of the first half of 1995. The dollar has now risen back to levels last
seen in 1994, both against the yen and the Deutschemark. Similar patterns are
reflected in the European crossrates. Exchange rates have arguably moved closer
to fair value. Nonetheless, the dollar currently appears well underpinned by
relative growth differentials and the likelihood that monetary policy will turn
restrictive in the U.S. first. A relatively favorable budget position (the U.S.
has one of the smallest budget deficits as a percentage of GDP of any major
country) should help as well. The current international desire on the part of
global policymakers to avoid another round of dollar depreciation should also
not be ignored. The dollar could come under pressure later in the year if the
Fed does not tighten in response to strong economic data (falling "behind the
curve") or the U.S. economy slows precipitously. And, the dollar could succumb
if speculation increases that a Bundesbank or Bank of Japan tightening is
imminent, especially if combined with a weak-willed Fed or weak U.S. economy.
 
Michael J. Smith
PORTFOLIO MANAGER
 
Robert M. Smith
PORTFOLIO MANAGER
 
July 1996
 
- --------------------------------------------------------------------------------
                                                   Global Fixed Income Portfolio
 
                                      117
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
STATEMENT OF NET ASSETS (UNAUDITED)
JUNE 30, 1996
- --------------------------------------------------------------------------------
 
THE GLOBAL FIXED INCOME PORTFOLIO
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>
      FACE
     AMOUNT                                                               VALUE
     (000)                                                                (000)
- ------------------------------------------------------------
<C>                <S>                                                 <C>
FIXED INCOME SECURITIES (85.1%)
  AUSTRALIAN DOLLAR (2.7%)
    GOVERNMENT BONDS (2.7%)
    AUD    2,200   Government of Australia 9.75%, 3/15/02............  $     1,806
           1,800   Government of Australia 9.00%, 9/15/04............        1,429
                                                                       -----------
                                                                             3,235
                                                                       -----------
  BRITISH POUND (7.0%)
    GOVERNMENT BONDS (7.0%)
    GBP    2,350   United Kingdom Conversion Bond 9.50%, 4/18/05.....        4,014
             700   United Kingdom Treasury GILT 10.00%, 2/26/01......        1,199
           1,750   United Kingdom Treasury GILT 9.75%, 8/27/02.......        3,008
                                                                       -----------
                                                                             8,221
                                                                       -----------
  CANADIAN DOLLAR (2.8%)
    GOVERNMENT BONDS (2.8%)
    CAD    1,800   Government of Canada 7.50%, 12/01/03..............        1,324
           1,250   Government of Canada 6.50%, 6/01/04...............          861
           1,300   Government of Canada 9.75%, 6/01/21...............        1,118
                                                                       -----------
                                                                             3,303
                                                                       -----------
  DANISH KRONE (6.2%)
    GOVERNMENT BONDS (6.2%)
    DKK   23,500   Kingdom of Denmark 8.00%, 11/15/01................        4,288
          13,500   Kingdom of Denmark 7.00%, 12/15/04................        2,281
           4,000   Kingdom of Denmark 8.00%, 3/15/06.................          711
                                                                       -----------
                                                                             7,280
                                                                       -----------
  DEUTSCHE MARK (14.8%)
    GOVERNMENT BONDS (14.8%)
     DEM  11,700   German Unity Bond 8.00%, 1/21/02..................        8,465
           2,000   Government of Germany 6.25%, 1/04/24..............        1,157
           6,350   Treuhandanstalt 6.875%, 6/11/03...................        4,326
           5,325   Treuhandanstalt 6.75%, 5/13/04....................        3,576
                                                                       -----------
                                                                            17,524
                                                                       -----------
  FRENCH FRANC (3.1%)
    GOVERNMENT BOND (3.1%)
    FRF   17,200   French Treasury Bill 7.75%, 4/12/00...............        3,621
                                                                       -----------
  ITALIAN LIRA (5.8%)
    GOVERNMENT BOND (5.8%)
   ITL 9,890,000   Republic of Italy Treasury Bond 10.50%,
                     11/01/00........................................        6,874
                                                                       -----------
  JAPANESE YEN (7.9%)
    EUROBONDS (7.9%)
   JPY   300,000   European Investment Bank 6.625%, 3/15/00..........        3,186
         200,000   Export-Import Bank of Japan 4.375%, 10/01/03......        1,985
 
<CAPTION>
      FACE
     AMOUNT                                                               VALUE
     (000)                                                                (000)
- ------------------------------------------------------------
<C>                <S>                                                 <C>
 
   JPY   245,000   International Bank for Reconstruction &
                     Development 4.75%, 12/20/04.....................  $     2,517
         145,000   Republic of Austria 6.25%, 10/16/03...............        1,605
                                                                       -----------
                                                                             9,293
                                                                       -----------
  NETHERLANDS GUILDER (3.5%)
    GOVERNMENT BONDS (3.5%)
    NLG    3,250   Netherlands Government 9.00%, 1/15/01.............        2,179
           3,350   Netherlands Government 5.75%, 1/15/04.............        1,918
                                                                       -----------
                                                                             4,097
                                                                       -----------
  SPANISH PESETA (1.0%)
    GOVERNMENT BONDS (1.0%)
   ESP    70,000   Spanish Government 12.25%, 3/25/00................          620
          70,000   Spanish Government 11.30%, 1/15/02................          615
                                                                       -----------
                                                                             1,235
                                                                       -----------
  SWEDISH KRONA (7.7%)
    GOVERNMENT BOND (7.7%)
    SEK   48,900   Swedish Government 13.00%, 6/15/01................        9,039
                                                                       -----------
  UNITED STATES DOLLAR (22.6%)
    CORPORATE BONDS AND NOTES (4.3%)
   U.S.$     992   Asset Securitization Corp. 7.10%, 8/13/29.........          971
          (e)385   Goldman Sachs Group 6.25%, 2/01/03................          364
             892   LB Commercial Conduit Mortgage Trust 7.144%,
                     8/25/04.........................................          886
          (e)300   Lumbermens Mutual Casualty Co., Series AI, 9.15%,
                     7/01/26.........................................          299
          (e)600   Metropolitan Life Insurance 7.45%, 11/01/23.......          544
           2,000   UCFC CMO, Series 1995-C1, Class A3, 6.775%,
                     9/10/17.........................................        1,962
                                                                       -----------
                                                                             5,026
                                                                       -----------
  U.S. GOVERNMENT AND AGENCY OBLIGATIONS (17.7%)
    U.S. TREASURY BONDS
             800   7.50%, 11/15/16...................................          840
             750   8.75%, 5/15/20....................................          896
                                                                       -----------
                                                                             1,736
                                                                       -----------
    U.S. TREASURY NOTES
           2,300   5.125%, 11/30/98..................................        2,245
             710   6.25%, 2/15/03....................................          697
                                                                       -----------
                                                                             2,942
                                                                       -----------
    FEDERAL NATIONAL MORTGAGE ASSOCIATION
          11,700   6.00%, 7/25/03....................................       11,261
                                                                       -----------
    GOVERNMENT NATIONAL MORTGAGE ASSOCIATION
           2,814   6.50%, 1/01/26....................................        2,632
           2,479   7.00%, 2/15/26....................................        2,378
                                                                       -----------
                                                                             5,010
                                                                       -----------
                                                                            20,949
                                                                       -----------
  YANKEE BOND (0.6%)
             700   Quebec Province 7.50%, 7/15/23....................          671
                                                                       -----------
TOTAL FIXED INCOME SECURITIES (85.1%) (Cost $100,890)................      100,368
                                                                       -----------
</TABLE>
 
The accompanying notes are an integral part of the financial statements. (Pages
                                    182-188)
- --------------------------------------------------------------------------------
Global Fixed Income Portfolio
 
                                      118
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[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
STATEMENT OF NET ASSETS (UNAUDITED)
JUNE 30, 1996
- --------------------------------------------------------------------------------
 
THE GLOBAL FIXED INCOME PORTFOLIO (CONT.)
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>
      FACE
     AMOUNT                                                               VALUE
     (000)                                                                (000)
- ------------------------------------------------------------
<C>                <S>                                                 <C>
SHORT-TERM INVESTMENT (18.4%)
  REPURCHASE AGREEMENT (18.4%)
   $      21,759   Chase Securities, Inc. 5.15%, dated 6/28/96, due
                     7/01/96, to be repurchased at $21,768,
                     collateralized by $21,375 U.S. Treasury Notes,
                     7.125%, 9/30/99, valued at $21,853 (Cost
                     $21,759)........................................  $    21,759
                                                                       -----------
FOREIGN CURRENCY (1.1%)
    FRF        1   French Franc......................................           --
   ITL     4,666   Italian Lira......................................            3
   JPY   137,377   Japanese Yen......................................        1,257
    SEK        3   Swedish Krona.....................................            1
                                                                       -----------
TOTAL FOREIGN CURRENCY (Cost $1,259).................................        1,261
                                                                       -----------
TOTAL INVESTMENTS (104.6%) (Cost $123,908)...........................      123,388
                                                                       -----------
</TABLE>
 
<TABLE>
<S>                                                      <C>           <C>
OTHER ASSETS (5.3%)
  Receivable for Portfolio Shares Sold.................  $     4,566
  Interest Receivable..................................        1,674
  Foreign Withholding Tax Reclaim Receivable...........           36
  Other................................................           14         6,290
                                                         -----------
LIABILITIES (-9.9%)
  Payable for Investments Purchased....................      (11,248)
  Net Unrealized Loss on Forward Foreign Currency
   Exchange Contracts..................................         (265)
  Bank Overdraft.......................................          (59)
  Investment Advisory Fees Payable.....................          (42)
  Administrative Fees Payable..........................          (15)
  Custodian Fees Payable...............................          (13)
  Directors' Fees and Expenses Payable.................           (2)
  Distribution Fees Payable............................           (1)
  Payable for Portfolio Shares Redeemed................           (1)
  Other Liabilities....................................          (33)      (11,679)
                                                         -----------   -----------
NET ASSETS (100%)...................................................      $117,999
                                                                       -----------
                                                                       -----------
NET ASSETS CONSIST OF:
Paid in Capital.....................................................   $   122,476
Undistributed Net Investment Income.................................         1,673
Accumulated Net Realized Loss.......................................        (5,348)
Unrealized Depreciation on Investments and Foreign Currency
  Translations......................................................          (802)
                                                                       -----------
NET ASSETS..........................................................      $117,999
                                                                       -----------
                                                                       -----------
CLASS A:
- --------------------------------------------------------------------
NET ASSETS..........................................................      $116,382
NET ASSET VALUE, OFFERING AND REDEMPTION
  PRICE PER SHARE
  Applicable to 10,520,411 outstanding $0.001 par value shares
  (authorized 500,000,000 shares)...................................        $11.06
                                                                       -----------
                                                                       -----------
CLASS B:
- --------------------------------------------------------------------
NET ASSETS..........................................................        $1,617
NET ASSET VALUE, OFFERING AND REDEMPTION
  PRICE PER SHARE
  Applicable to 146,342 outstanding $0.001 par value shares
  (authorized 500,000,000 shares)...................................        $11.05
                                                                       -----------
                                                                       -----------
 
- ------------------------------------------------------------
FORWARD FOREIGN CURRENCY EXCHANGE CONTRACT INFORMATION:
Under the terms of forward foreign currency exchange contracts open at June 30,
1996, the Portfolio is obligated to deliver or is to receive foreign currency in
exchange for U.S. dollars or foreign currency as indicated below:
</TABLE>
 
<TABLE>
<CAPTION>
                                                                      NET
CURRENCY TO                            IN EXCHANGE                UNREALIZED
  DELIVER       VALUE    SETTLEMENT        FOR          VALUE     GAIN (LOSS)
   (000)        (000)       DATE          (000)         (000)        (000)
- ------------  ---------  -----------  --------------  ---------  -------------
<S>           <C>        <C>          <C>             <C>        <C>
CHF 3,500     $   2,804     7/12/96     U.S.$  2,787  $   2,787    $     (17)
DEM 9,800         6,453     7/12/96     U.S.$  6,420      6,420          (33)
DEM 1,795         1,182     7/12/96      FRF   6,080      1,184            2
DKK 5,000           854     7/12/96     U.S.$    846        846           (8)
FRF 12,206        2,377     7/12/96       DEM  3,600      2,370           (7)
JPY 450,000       4,125     7/12/96     U.S.$  4,138      4,138           13
NLG 3,000         1,762     7/12/96     U.S.$  1,750      1,750          (12)
SEK 44,500        6,726     7/12/96     U.S.$  6,616      6,616         (110)
U.S.$ 4,148       4,148     7/12/96     JPY  450,000      4,125          (23)
U.S.$  861          861     7/12/96       DEM  1,300        856           (5)
U.S.$  679          679     7/12/96      SEK   4,500        680            1
U.S.$  295          295     7/12/96       NLG    500        294           (1)
U.S.$   63           63     7/12/96       GBP     41         63           --
CAD  900            660     7/19/96     U.S.$    659        659           (1)
DEM 8,770         5,777     7/19/96     U.S.$  5,732      5,732          (45)
DKK18,000         3,077     7/19/96     U.S.$  3,047      3,047          (30)
NLG 4,200         2,468     7/19/96     U.S.$  2,454      2,454          (14)
U.S.$  328          328     7/19/96       DEM    500        329            1
U.S.$  366          366     7/19/96       CAD    500        367            1
U.S.$  158          158     7/19/96       AUD    200        157           (1)
U.S.$ 4,486       4,486     7/26/96    ITL 6,900,000      4,495            9
U.S.$ 4,239       4,239     7/26/96      ESP 545,000      4,254           15
              ---------                               ---------        -----
              $  53,888                               $  53,623    $    (265)
              ---------                               ---------        -----
              ---------                               ---------        -----
</TABLE>
 
- ------------------------------------------------------------
 
<TABLE>
<S>        <C>        <C>
(e)           --      144A Security -- Certain conditions for public sale
                      may exist.
CMO           --      Collateralized Mortgage Obligation
CHF           --      Swiss Franc
</TABLE>
 
- ------------------------------------------------------------
 
         SUMMARY OF FIXED INCOME SECURITIES BY INDUSTRY CLASSIFICATION
 
<TABLE>
<CAPTION>
                                                               PERCENT
                                                   VALUE        OF NET
INDUSTRY                                           (000)        ASSETS
- --------------------------------------------------------------------
<S>                                              <C>        <C>
Finance........................................  $  12,714        10.8%
Foreign Government and Agency Obligations......     66,705        56.5
U.S. Government and Agency Obligations.........     20,949        17.8
                                                 ---------         ---
                                                 $ 100,368        85.1%
                                                 ---------         ---
                                                 ---------         ---
</TABLE>
 
The accompanying notes are an integral part of the financial statements. (Pages
                                    182-188)
- --------------------------------------------------------------------------------
                                                   Global Fixed Income Portfolio
 
                                      119
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
 
OVERVIEW
- --------------------------------------------------------------------------------
 
THE HIGH YIELD PORTFOLIO
 
COMPOSITION OF NET ASSETS (AT JUNE 30, 1996)
 
EDGAR REPRESENTATION OF DATA POINTS USED IN PRINTED GRAPHIC
 
<TABLE>
<S>                                      <C>
Aerospace & Defense                           1.6%
Automotive                                    0.2%
Banking                                       1.2%
Broadcast - Radio & Television               14.8%
Construction                                  1.4%
Electrical Equipment                          0.5%
Energy                                        1.1%
Entertainment & Leisure                       3.7%
Environmental Controls                        1.4%
Financial Services                            8.5%
Food                                          3.0%
Food Services & Lodging                       2.2%
Gaming & Lodging                              2.6%
Machinery                                     1.3%
Materials                                     4.0%
Metals                                        4.3%
Multi-Industry                                2.2%
Packaging & Container                         4.3%
Publishing                                    1.8%
Real Estate                                   1.7%
Retail - General                              5.0%
Telecommunications                            7.7%
Textiles & Apparel                            2.0%
Transportation                                1.5%
Utilities                                     3.0%
Foreign Government & Agency Obligations       8.6%
Other                                        10.4%
</TABLE>
 
PERFORMANCE COMPARED TO THE CS FIRST BOSTON
HIGH YIELD INDEX(1)
- -----------------------------------------
 
<TABLE>
<CAPTION>
                                       TOTAL RETURNS(2)
                          -------------------------------------------
                                                     AVERAGE ANNUAL
                             YTD        ONE YEAR     SINCE INCEPTION
                          ----------  ------------  -----------------
<S>                       <C>         <C>           <C>
PORTFOLIO -- CLASS A....       4.47%       12.62%          11.86%
PORTFOLIO -- CLASS
B(3)....................       3.89          N/A             N/A
INDEX...................       3.75         9.95           10.54
 
<FN>
 
1. The CS First Boston High Yield Index is an unmanaged index of high yield
   corporate bonds.
 
2. Total returns for the Portfolio reflect expenses waived and reimbursed, if
   applicable, by the Adviser. Without such waiver and reimbursement, total
   returns would be lower.
 
3. The Portfolio began offering Class B shares on January 2, 1996.
</TABLE>
 
PAST PERFORMANCE IS NOT PREDICTIVE OF FUTURE PERFORMANCE.
 
- ------------------------------------------------------------
 
THE PERFORMANCE RESULTS PROVIDED ARE FOR INFORMATIONAL PURPOSES ONLY AND SHOULD
NOT BE CONSTRUED AS A GUARANTEE OF THE PORTFOLIO'S FUTURE PERFORMANCE. PAST
PERFORMANCE SHOWN IS NOT PREDICTIVE OF FUTURE PERFORMANCE. INVESTMENT RETURN AND
PRINCIPAL VALUE WILL FLUCTUATE SO THAT AN INVESTOR'S SHARES, WHEN REDEEMED, MAY
BE WORTH MORE OR LESS THAN THEIR ORIGINAL COST. YIELDS WILL FLUCTUATE AS MARKET
CONDITIONS CHANGE.
 
The High Yield Portfolio seeks to maximize total return by investing in a
diversified portfolio of fixed income securities that offer a higher yield than
that offered by debt securities in the three highest rating categories.
 
For the six month period ended June 30, 1996, the Portfolio had a total return
of 4.47% for the Class A shares and 3.89% for the Class B shares, as compared to
a total return of 3.75% for the CS First Boston High Yield Index. The average
annual total return for the twelve months ended June 30, 1996 and for the period
from inception on September 28, 1992 through June 30, 1996 was 12.62% and
11.86%, respectively, for the Class A shares, as compared to 9.95% and 10.54%,
respectively, for the Index. As of June 30, 1996, the Portfolio had an SEC
30-day yield of 9.86% for the Class A shares and 9.61% for the Class B shares.
 
For the three months ended June 30, 1996, the Portfolio had a total return of
1.29% for the Class A shares and 1.20% for the Class B shares as compared to
1.56% for the Index. Helping the Portfolio in the quarter were: our paper
industry overweighting, specific securities which performed particularly well
(including Marvel, Revlon and Six Flags) and our emerging markets investments.
Offsetting factors included the underperformance of our cable investments, where
spreads widened in the quarter, and specific securities which performed poorly,
including Home Holdings.
 
During the quarter, we made incremental changes to industry exposures. We added
to our cable holdings. We believe that cable television bonds represent the best
value in the higher quality sector of the high yield bond market, and think that
this overweighting will benefit future performance. We also added to diversified
media companies, including Viacom and Time Warner.
 
A new investment in the second quarter was ALPS 96-1. This is an airline lease
securitization where the aircraft and related leases were sold in securitized
form by GPA, the lessor. We purchased a BB-rated security in this transaction
where we thought the trade-off between portfolio collateralization levels and
expected return was the most attractive.
 
We also continued to maintain an exposure in U.S. dollar-denominated emerging
markets bonds. Increasingly, our investments take the form of non-U.S.
companies, rather than in emerging markets sovereign debt. For these corporate
credits, a combination of
 
- --------------------------------------------------------------------------------
High Yield Portfolio
 
                                      120
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
 
OVERVIEW
- --------------------------------------------------------------------------------
THE HIGH YIELD PORTFOLIO (CONT.)
sovereign risk analysis and our traditional high yield credit work offers the
potential to uncover attractive values.
 
The high yield market has performed extremely well year-to-date compared to high
quality bonds. Credit spreads have tightened meaningfully, with strong economic
growth and favorable trends in credit quality making for an extremely supportive
environment. Looking ahead, we are being somewhat more cautious with regard to
overall credit quality. While we expect continued favorable returns from high
yield bonds, the market may be somewhat more vulnerable to signs of economic
weakness or to an equity market correction.
 
Robert Angevine
PORTFOLIO MANAGER
 
July 1996
 
- --------------------------------------------------------------------------------
                                                            High Yield Portfolio
 
                                      121
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
STATEMENT OF NET ASSETS (UNAUDITED)
JUNE 30, 1996
- --------------------------------------------------------------------------------
 
THE HIGH YIELD PORTFOLIO
 
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>
  FACE
 AMOUNT                               VALUE
  (000)                               (000)
- ---------------------------------------------
<C>        <S>                      <C>
CORPORATE BONDS AND NOTES (71.8%)
  AUTOMOTIVE (0.2%)
$  (e)255  Exide Corp., 2.90%,
             12/15/05.............  $     139
                                    ---------
  BANKING (0.9%)
   (e)775  United Savings Texas,
             8.55%, 5/15/98.......        777
                                    ---------
  BROADCAST-RADIO & TELEVISION
(14.8%)
      950  Cablevision Systems
             Corp., 9.875%,
             5/15/06..............        914
      500  Comcast Cellular Corp.,
             Series A, Zero
             Coupon, 3/05/00......        344
    1,350  Comcast Cellular Corp.,
             Series B, Zero
             Coupon, 3/05/00......        928
      925  Comcast Corp., 9.375%,
             5/15/05..............        893
    1,235  Continental
             Cablevision, Inc.,
             9.50%, 8/01/13.......      1,340
    2,425  Lenfest Communications,
             8.375%, 11/01/05.....      2,219
   (e)315  Lenfest Communications,
             10.50%, 6/15/06......        317
 (n)2,400  Marcus Cable Co.,
             0.00%, 12/15/05......      1,482
 (n)3,075  MFS Communications Co.,
             Inc., 0.00%,
             1/15/06..............      1,872
    1,350  Rogers Cablesystems
             Ltd., 10.00%,
             3/15/05..............      1,337
    2,000  Viacom Inc., 8.00%,
             7/07/06..............      1,830
                                    ---------
                                       13,476
                                    ---------
  CONSTRUCTION (1.4%)
(e,n)2,060 Echostar Satellite
             Broadcast, 0.00%,
             3/15/04..............      1,277
                                    ---------
  ENERGY (1.1%)
    1,000  Nuevo Energy, 9.50%,
             4/15/06..............        987
                                    ---------
  ENTERTAINMENT & LEISURE (1.9%)
 (n)2,000  Six Flags Theme Park,
             Inc., 0.00%,
             6/15/05..............      1,703
                                    ---------
  ENVIRONMENTAL CONTROLS (1.4%)
(e,n)1,200 Norcal Waste Systems,
             12.75%, 11/15/05.....      1,263
                                    ---------
  FINANCIAL SERVICES (5.2%)
    1,850  APP International
             Finance, 11.75%,
             10/01/05.............      1,910
    2,360  Home Holdings, Inc.,
             8.625%, 12/15/03.....      1,534
   (e)400  Homeside, Inc., 11.25%,
             5/15/03..............        413
      940  Reliance Group
             Holdings, Inc.,
             9.00%, 11/15/00......        932
                                    ---------
                                        4,789
                                    ---------
  FOOD (3.0%)
      315  Big V Supermarkets,
             Inc., 11.00%,
             2/15/04..............        294
    1,150  Pilgrim's Pride Corp.,
             10.875%, 8/01/03.....      1,105
      475  RJR Nabisco, Inc.,
             8.75%, 8/15/05.......        475
      900  Smith's Food & Drug,
             11.25%, 5/15/07......        911
                                    ---------
                                        2,785
                                    ---------
 
<CAPTION>
  FACE
 AMOUNT                               VALUE
  (000)                               (000)
- ---------------------------------------------
<C>        <S>                      <C>
  FOOD SERVICE & LODGING (2.1%)
$(e)1,475  Courtyard by Marriott,
             10.75%, 2/01/08......  $   1,442
      435  La Quinta Inns, Inc.,
             9.25%, 5/15/03.......        445
                                    ---------
                                        1,887
                                    ---------
  GAMING & LODGING (2.1%)
      175  Grand Casinos Inc.,
             10.125%, 12/01/03....        179
      522  Louisiana Casino
             Cruises, 11.50%,
             12/01/98.............        444
    1,350  Trump Atlantic, 11.25%,
             5/01/06..............      1,353
                                    ---------
                                        1,976
                                    ---------
  MACHINERY (1.3%)
    1,145  SD Warren Co., 12.00%,
             12/15/04.............      1,211
                                    ---------
  MATERIALS (4.0%)
(e,n)3,000 Brooks Fiber
             Properties, 0.00%,
             3/01/06..............      1,590
      500  IMC Global, Inc.,
             9.25%, 10/01/00......        512
    1,500  IMC Global, Inc.,
             9.45%, 12/15/11......      1,530
                                    ---------
                                        3,632
                                    ---------
  METALS (3.3%)
      750  Algoma Steel Inc.,
             (Yankee Bond),
             12.375%, 7/15/05.....        731
   (e)525  Jet Equipment Trust,
             Series 95-D, 11.44%,
             11/01/14.............        576
 (e)1,050  Jet Equipment Trust,
             Series C1, 11.79%,
             6/15/13..............      1,179
      650  Sheffield Steel Corp.,
             12.00%, 11/01/01.....        572
                                    ---------
                                        3,058
                                    ---------
  MULTI-INDUSTRY (2.2%)
      765  TLC Beatrice
             International
             Holdings, 11.50%,
             10/01/05.............        776
 (e)1,195  Unisys Corp., 12.00%,
             4/15/03..............      1,214
                                    ---------
                                        1,990
                                    ---------
  PACKAGING & CONTAINER (4.3%)
      400  Gaylord Container
             Corp., 11.50%,
             5/15/01..............        408
   (n)425  Gaylord Container
             Corp., 12.75%,
             5/15/05..............        448
    1,060  G-I Holdings, Inc. Zero
             Coupon, 10/01/98.....        851
      825  Owens-Illinois, Inc.,
             11.00%, 12/01/03.....        887
    1,400  Stone Container Corp.,
             10.75%, 10/01/02.....      1,414
                                    ---------
                                        4,008
                                    ---------
  PUBLISHING (1.8%)
    1,365  Crown Paper Co.,
             11.00%, 9/01/05......      1,297
      500  Marvel Parent Holdings,
             Zero Coupon,
             4/15/98..............        396
                                    ---------
                                        1,693
                                    ---------
  REAL ESTATE (1.6%)
 (e)1,250  HMC Acquisition
             Properties, 9.00%,
             12/15/07.............      1,144
</TABLE>
 
The accompanying notes are an integral part of the financial statements. (Pages
                                    182-188)
 
- --------------------------------------------------------------------------------
High Yield Portfolio
 
                                      122
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
STATEMENT OF NET ASSETS (UNAUDITED)
JUNE 30, 1996
- --------------------------------------------------------------------------------
 
THE HIGH YIELD PORTFOLIO (CONT.)
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>
  FACE
 AMOUNT                               VALUE
  (000)                               (000)
- ---------------------------------------------
<C>        <S>                      <C>
</TABLE>
 
  REAL ESTATE (CONT.)
<TABLE>
<C>        <S>                      <C>
$     350  MDC Holdings, 11.125%,
             12/15/03.............  $     337
                                    ---------
                                        1,481
                                    ---------
  RETAIL-GENERAL (5.0%)
    1,400  Host Marriott Travel
             Plaza, Series B,
             9.50%, 5/15/05.......      1,342
    2,171  Revlon Worldwide,
             Series B, Zero
             Coupon, 3/15/98......      1,807
    1,775  Southland Corp., 5.00%,
             12/15/03.............      1,385
                                    ---------
                                        4,534
                                    ---------
  TELECOMMUNICATIONS (7.7%)
 (n)3,000  Dial Call
             Communications,
             0.00%, 4/15/04.......      1,920
 (n)2,250  Nextel Communications,
             0.00%, 8/15/04.......      1,322
(e,n)2,200 Occidente y Caribe,
             0.00%, 3/15/04.......      1,122
      350  Philippines Long
             Distance Telephone,
             9.25%, 6/30/06.......        350
 (n)1,700  Telewest plc, 0.00%,
             10/01/07.............      1,007
    1,500  TCI Communications,
             Inc., 7.875%,
             2/15/26..............      1,311
                                    ---------
                                        7,032
                                    ---------
  TEXTILES & APPAREL (2.0%)
      525  Collins & Aikman
             Products, 11.50%,
             4/15/06..............        534
    1,365  Westpoint Stevens,
             Inc., 9.375%,
             12/15/05.............      1,327
                                    ---------
                                        1,861
                                    ---------
  TRANSPORTATION (1.5%)
      164  America West Airlines,
             6.00%, 3/31/97.......        154
    1,500  Venture Holdings,
             9.75%, 4/01/04.......      1,238
                                    ---------
                                        1,392
                                    ---------
  UTILITIES (3.0%)
    1,400  First PV Funding Corp.,
             (Lease Obligation
             Bond) Series 1986B,
             10.15%, 1/15/16......      1,418
      212  Midland Cogeneration
             Ventures, Series
             C-91, 10.33%,
             7/23/02..............        221
      374  Midland Cogeneration
             Ventures, Series
             C-94, 10.33%,
             7/23/02..............        394
      650  Midland Funding II,
             Series A, 11.75%,
             7/23/05..............        681
                                    ---------
                                        2,714
                                    ---------
TOTAL CORPORATE BONDS AND NOTES
(Cost $66,556)....................     65,665
                                    ---------
ASSET BACKED SECURITIES (5.2%)
  AEROSPACE & DEFENSE (1.6%)
 (e)1,500  Aircraft Lease
             Portfolio
             Securitization Ltd.,
             Series 1996-1, Class
             D, 12.75%, 6/15/06...      1,500
                                    ---------
<CAPTION>
  FACE
 AMOUNT                               VALUE
  (000)                               (000)
- ---------------------------------------------
<C>        <S>                      <C>
  BANKING (0.3%)
$     349  PNC Mortgage Securities
             Corp., Series 1995-2,
             Class B4, REMIC,
             7.50%, 9/25/25.......  $     262
                                    ---------
  FINANCIAL SERVICES (3.3%)
      972  DR Securitized Lease
             Trust, Series
             1993-K1, Class A1,
             6.66%, 8/15/10.......        735
    1,374  DR Securitized Lease
             Trust, Series
             1994-K1, Class A1,
             7.60%, 8/15/07.......      1,154
   (e)311  GE Capital Mortgage
             Services, Inc.,
             Series 1995-12, Class
             B3, REMIC, 7.88%,
             8/25/25..............        235
   (e)350  Prudential Home
             Mortgage Securities,
             Inc., Series 1996-4,
             Class B3, REMIC,
             6.50%, 4/25/26.......        258
      875  Prudential Home
             Mortgage Securities
             Inc., Series 1996-A
             Class B1, 7.96%,
             4/15/25..............        582
                                    ---------
                                        2,964
                                    ---------
TOTAL ASSET BACKED SECURITIES
(Cost $4,783).....................      4,726
                                    ---------
FOREIGN GOVERNMENT BONDS (8.6%)
    BONDS (8.6%)
    5,310  Federative Republic of
             Brazil, Par Bond,
             Series Z-L, 5.00%,
             4/15/24..............      2,950
 (n)1,250  Government of Venezuela
             Front Loaded Interest
             Reduction Bond,
             Series A, 6.375%,
             3/31/07..............        905
    1,485  Republic of Argentina,
             Series L, "Euro"
             (Floating Rate),
             6.313%, 3/31/05......      1,160
 (n)3,160  Republic of Argentina
             Series L, "Euro"
             (Floating Rate),
             5.25%, 3/31/23.......      1,734
    1,750  United Mexican States,
             Series B, 6.25%,
             12/31/19.............      1,120
                                    ---------
TOTAL FOREIGN GOVERNMENT BONDS
(Cost $7,244).....................      7,869
                                    ---------
</TABLE>
 
<TABLE>
<CAPTION>
    SHARES
- --------------
<C>             <S>                                  <C>
COMMON STOCKS (0.1%)
  FINANCIAL SERVICES (0.0%)
      (a)1,268  WestFed Holdings, Inc., Class B....         --
                                                     ---------
  FOOD SERVICE & LODGING (0.1%)
      (a)1,300  Motels of America, Inc.............         95
                                                     ---------
TOTAL COMMON STOCKS (Cost $85).....................         95
                                                     ---------
PREFERRED STOCKS (1.8%)
  ENTERTAINMENT & LEISURE (1.8%)
      (e)1,700  Time Warner, Inc...................      1,666
</TABLE>
 
The accompanying notes are an integral part of the financial statements. (Pages
                                    182-188)
 
- --------------------------------------------------------------------------------
                                                            High Yield Portfolio
 
                                      123
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
STATEMENT OF NET ASSETS (UNAUDITED)
JUNE 30, 1996
- --------------------------------------------------------------------------------
 
THE HIGH YIELD PORTFOLIO (CONT.)
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>
                                                       VALUE
    SHARES                                             (000)
- ------------------------------------------------------------
<C>             <S>                                  <C>
  FINANCIAL SERVICES (0.0%)
             3  WestFed Holdings, Inc., Series A...  $      --
                                                     ---------
TOTAL PREFERRED STOCKS (Cost $1,771)...............      1,666
                                                     ---------
</TABLE>
<TABLE>
<CAPTION>
    NO. OF
    RIGHTS
- --------------
<C>             <S>                                  <C>
RIGHTS (0.0%)
  BROADCAST-RADIO & TELEVISION (0.0%)
     (a)35,000  SpectraVision, Inc., expiring
                  10/08/97.........................          2
                                                     ---------
  FOREIGN GOVERNMENT (0.0%)
  (a)1,750,000  United Mexican States, 6.25%
                  12/31/19.........................         --
                                                     ---------
TOTAL RIGHTS (Cost $133)...........................          2
                                                     ---------
 
<CAPTION>
 
    NO. OF
   WARRANTS
- --------------
<C>             <S>                                  <C>
WARRANTS (0.6%)
  AEROSPACE & DEFENSE (0.0%)
        (a)500  Sabreliner Corp., expiring
                  4/15/03..........................         --
                                                     ---------
  ELECTRICAL EQUIPMENT (0.5%)
   (a,e)28,000  Protection One Alarm, Inc.,
                  expiring 4/03/03.................        416
                                                     ---------
  GAMING & LODGING (0.0%)
      (a)2,700  Casino Magic Corp., expiring
                  10/14/96.........................         --
      (a)1,725  Louisiana Casino Cruises, expiring
                  12/01/98.........................          9
                                                     ---------
                                                             9
                                                     ---------
  INSURANCE (0.0%)
        (a)500  Horace Mann Educators Corp.,
                  expiring 4/03/99.................          7
                                                     ---------
  METALS (0.0%)
      (a)8,250  Sheffield Steel Corp., expiring
                  11/01/01.........................         25
                                                     ---------
  PACKAGING & CONTAINER (0.0%)
      (a)1,000  Crown Packaging Holdings, expiring
                  11/01/03.........................          5
                                                     ---------
  REAL ESTATE (0.1%)
      (a)1,000  Petro PSC Properties L.P., expiring
                  7/15/97..........................         33
                                                     ---------
  TELECOMMUNICATIONS (0.0%)
    (a,e)1,250  American Telecasting, expiring
                  8/10/00..........................         30
    (a,e)3,000  Nextel Communications, Inc.,
                  expiring 4/25/99.................         --
                                                     ---------
                                                            30
                                                     ---------
TOTAL WARRANTS (Cost $260).........................        525
                                                     ---------
<CAPTION>
 
    NO. OF                                             VALUE
    UNITS                                              (000)
<C>             <S>                                  <C>
- ------------------------------------------------------------
UNITS (1.5%)
  GAMING & LODGING (0.5%)
(b,e)2,207,906  Maritime Group, Series A, 13.50%,
                  2/15/97..........................  $     487
                                                     ---------
  METALS (1.0%)
     1,000,000  Sheffield Steel Corp. (1st Mortgage
                  Bond + 5 common stock warrants),
                  12.00%, 11/01/01.................        885
                                                     ---------
TOTAL UNITS (Cost $3,426)..........................      1,372
                                                     ---------
<CAPTION>
     FACE
    AMOUNT
    (000)
- --------------
<C>             <S>                                  <C>
SHORT-TERM INVESTMENT (8.0%)
  REPURCHASE AGREEMENT (8.0%)
$        7,289  Chase Securities, Inc., 5.15%,
                  dated 6/28/96, due 7/01/96, to be
                  repurchased at $7,292,
                  collateralized by $7,165 U.S.
                  Treasury Notes, 7.125%, due
                  9/30/99, valued at $7,325 (Cost
                  $7,289)..........................      7,289
                                                     ---------
TOTAL INVESTMENTS (97.6%) (Cost $91,547)...........     89,209
                                                     ---------
</TABLE>
 
<TABLE>
<S>                                         <C>        <C>
OTHER ASSETS (3.3%)
  Receivable for Investments Sold.........     $1,534
  Interest Receivable.....................      1,406
  Receivable for Portfolio Shares Sold....          2
  Other...................................         12      2,954
                                            ---------
LIABILITIES (-0.9%)
  Payable for Investments Purchased.......       (338)
  Interest Claims Payable.................       (289)
  Investment Advisory Fees Payable........        (88)
  Administrative Fees Payable.............        (12)
  Custodian Fees Payable..................         (4)
  Distribution Fees Payable...............         (2)
  Directors' Fees and Expenses Payable....         (1)
  Other Liabilities.......................        (28)      (762)
                                            ---------  ---------
</TABLE>
 
<TABLE>
<S>                                                  <C>
NET ASSETS (100.0%)................................   $  91,401
                                                     -----------
                                                     -----------
NET ASSETS CONSIST OF:
  Paid in Capital..................................   $  96,640
  Undistributed Net Investment Income..............         730
  Accumulated Net Realized Loss....................      (3,631)
  Unrealized Depreciation on Investments...........      (2,338)
                                                     -----------
NET ASSETS.........................................   $  91,401
                                                     -----------
                                                     -----------
</TABLE>
 
The accompanying notes are an integral part of the financial statements. (Pages
                                    182-188)
 
- --------------------------------------------------------------------------------
High Yield Portfolio
 
                                      124
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
STATEMENT OF NET ASSETS (UNAUDITED)
JUNE 30, 1996
- --------------------------------------------------------------------------------
 
THE HIGH YIELD PORTFOLIO (CONT.)
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>
                                                       AMOUNT
                                                        (000)
- ------------------------------------------------------------
<S>                                                  <C>
CLASS A:
NET ASSETS.........................................  $   87,902
NET ASSET VALUE, OFFERING AND REDEMPTION
  PRICE PER SHARE
  Applicable to 8,372,561 outstanding $0.001 par
   value shares (authorized 500,000,000 shares)....      $10.50
                                                     -----------
                                                     -----------
CLASS B:
NET ASSETS.........................................      $3,499
NET ASSET VALUE, OFFERING AND REDEMPTION PRICE
  PER SHARE
  Applicable to 334,052 outstanding $0.001 par
   value shares (authorized 500,000,000 shares)....      $10.47
                                                     -----------
                                                     -----------
</TABLE>
 
- ------------------------------------------------
 
<TABLE>
<S>        <C>        <C>
(a)           --      Non-income producing security
(b)           --      Non-income producing security -- in default
(e)           --      144A Security -- Certain conditions for public sale
                      may exist
(n)           --      Step Bond -- Coupon rate increases in increments to
                      maturity. Rate disclosed is as of June 30, 1996.
                      Maturity date disclosed is the ultimate maturity
                      date.
</TABLE>
 
REMIC -- Real Estate Mortgage Investment Conduit
 
Floating Rate Security -- The interest rate changes on these instruments are
based on changes in a designated base rate. The rates shown are those in effect
on June 30, 1996.
 
At June 30, 1996, approximately 99% of the Portfolio's net assets consisted of
high yield securities rated below investment grade. Investments in high yield
securities are accompanied by a greater degree of credit risk and the risk tends
to be more sensitive to economic conditions than higher rated securities.
 
The accompanying notes are an integral part of the financial statements. (Pages
                                    182-188)
 
- --------------------------------------------------------------------------------
                                                            High Yield Portfolio
 
                                      125
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
 
OVERVIEW
- --------------------------------------------------------------------------------
 
THE MUNICIPAL BOND PORTFOLIO
 
COMPOSITION OF NET ASSETS (AT JUNE 30, 1996)
 
EDGAR REPRESENTATION OF DATA POINTS USED IN PRINTED GRAPHIC
 
<TABLE>
<S>                        <C>
Daily Variable Rate Bonds       1.0%
Fixed Rate Instruments         96.3%
Other                           2.7%
</TABLE>
 
PERFORMANCE COMPARED TO THE LEHMAN
7 YR. MUNICIPAL BOND INDEX(1)
- ----------------------------------
 
<TABLE>
<CAPTION>
                                          TOTAL RETURNS(2)
                           ----------------------------------------------
                                                         AVERAGE ANNUAL
                              YTD         ONE YEAR       SINCE INCEPTION
                           ---------  ----------------  -----------------
<S>                        <C>        <C>               <C>
PORTFOLIO -- CLASS A.....      -0.09%         4.30%             5.93%
PORTFOLIO -- CLASS
B(3).....................      -0.10           N/A               N/A
INDEX....................       0.09          5.54              8.22
 
<FN>
 
1. The Lehman 7-year Municipal Bond Index consists of investment grade bonds
   with maturities between 6-8 years, rated BAA or better. All bonds have been
   taken from issues of at least $50 million in size sold within the last five
   years.
 
2. Total returns for the Portfolio reflect expenses waived and reimbursed, if
   applicable, by the Adviser. Without such waiver and reimbursement, total
   returns would be lower.
 
3. The Portfolio began offering Class B shares on January 2, 1996.
</TABLE>
 
PAST PERFORMANCE IS NOT PREDICTIVE OF FUTURE PERFORMANCE.
 
- ------------------------------------------------------------
 
THE PERFORMANCE RESULTS PROVIDED ARE FOR INFORMATIONAL PURPOSES ONLY AND SHOULD
NOT BE CONSTRUED AS A GUARANTEE OF THE PORTFOLIO'S FUTURE PERFORMANCE. PAST
PERFORMANCE SHOWN IS NOT PREDICTIVE OF FUTURE PERFORMANCE. INVESTMENT RETURN AND
PRINCIPAL VALUE WILL FLUCTUATE SO THAT AN INVESTOR'S SHARES, WHEN REDEEMED, MAY
BE WORTH MORE OR LESS THAN THEIR ORIGINAL COST. YIELDS WILL FLUCTUATE AS MARKET
CONDITIONS CHANGE.
 
The Municipal Bond Portfolio seeks high current income consistent with
preservation of principal through investment in a portfolio consisting primarily
of intermediate and long-term investment grade municipal obligations, the
interest on which is exempt from Federal income tax.
 
For the six month period ended June 30, 1996, the Portfolio had a total return
of -0.09% for the Class A shares and -0.10% for the Class B shares, as compared
to a total return of 0.09% for the Lehman 7-Year Municipal Bond Index. The
average annual total return for the twelve months ended June 30, 1996 and for
the period from inception on January 18, 1995 through June 30, 1996 was 4.30%
and 5.93%, respectively for the Class A shares, as compared to 5.54% and 8.22%
for the Index. As of June 30, 1996, the Portfolio had an SEC 30-day yield of
4.66% for the Class A shares and 4.42% for the Class B shares.
 
The U.S. fixed income market has spent the first half of 1996 struggling to
determine the direction of Federal Reserve interest rate policy. The Federal
Reserve started off the year with a bias towards easing, and on January 31
decreased both the Federal Funds and Discount Rate by 25 basis points. Following
the easing, the Federal Reserve seemed to have mixed feelings about the strength
of the economy going forward, injecting into the market uncertainty about the
future direction of interest rate policy. Economic releases showing signs of
growth in the economy, including continued strength in home sales, a robust
employment picture and hints of inflationary pressure beginning to creep into
the labor market, all combined to put upward pressure on interest rates. The
markets were subject to day-to-day volatility caused by sharp movements in
commodity prices and a keen interest in the value of the U.S. dollar compared to
the Japanese yen and the German mark. Signs of strength in the economy and
rhetoric coming from Federal Reserve Bank Governors indicating the Federal
Reserve was concerned about the current level of inflation, specifically wage
pressures and their effect on the economy, put all thoughts of further Fed
easing on hold. Any attempts by the market to stage rallies were short-lived.
The market briefly rallied before the release of both the May and June
employment report; stronger than expected increases in these numbers sent the
market in a tailspin, as has been the scenario for much of this year. The first
half of the year ended with market participants anxiously anticipating what
action the Fed would or would not take at the July 2nd and 3rd FOMC meeting. The
meeting ended with no change in the Federal Funds or Discount Rate. Going into
the third quarter,
 
- --------------------------------------------------------------------------------
Municipal Bond Portfolio
 
                                      126
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
 
OVERVIEW
- --------------------------------------------------------------------------------
THE MUNICIPAL BOND PORTFOLIO (CONT.)
market sentiment seems to be not if, but when and by how much will the Federal
Reserve increase the Federal Funds and Discount Rate.
 
The municipal bond market year-to-date performed relatively well compared to the
U.S. Treasury market, outperforming comparable maturity Treasuries across the
yield curve. Individual investors continued to be good buyers as cash poured
into the market from the seasonal June and July increase in flows due to coupon
payments, calls and redemptions. Individuals looked to the municipal market as
yields became more attractive compared to recent levels and the stock market
began to make investors nervous with signs of topping out. Property and casualty
insurance companies were heavy participants in the new issue market and
tax-exempt mutual funds were active swappers, buying new issues and selling
older holdings to pay for new purchases.
 
The Portfolio is defensively structured, with over 30% of the Portfolio invested
in high quality premium coupon prerefunded bonds escrowed in U.S. Treasury
securities. The remainder of the Portfolio consists of premium coupon high
quality general obligation and revenue bonds. This structure provides some
cushion in a rising interest rate environment. We have not made any significant
changes to the Portfolio, with activity mainly limited to selling securities to
meet liquidity needs. Our average maturity is currently 6 years, slightly
shorter than the 7 year benchmark. We will continue to maintain a defensive bias
and will not look to extend the maturity of the Portfolio until we feel the
market has settled into a more stable trading range.
 
Lori A. Cohane
PORTFOLIO MANAGER
 
July 1996
 
- --------------------------------------------------------------------------------
                                                        Municipal Bond Portfolio
 
                                      127
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
STATEMENT OF NET ASSETS (UNAUDITED)
JUNE 30, 1996
- --------------------------------------------------------------------------------
 
THE MUNICIPAL BOND PORTFOLIO
 
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>
FACE AMOUNT                                    VALUE
   (000)                                       (000)
- ------------------------------------------------------
<C>           <S>                             <C>
TAX EXEMPT INSTRUMENTS (97.3%)
  DAILY VARIABLE RATE BONDS (1.0%)
$    (c)300   New York City, New York,
                General Obligation Bonds,
                Series B, 3.75%, 10/01/21
                (Cost $300).................  $    300
                                              --------
  FIXED RATE INSTRUMENTS (96.3%)
      1,000   Connecticut State Special
                Obligation, Tax Revenue
                Bonds, Transportation,
                6.50%, 7/01/09, Prerefunded
                7/01/99 at 102..............     1,073
      1,000   De Kalb County, Georgia,
                General Obligation Bonds,
                7.30%, 1/01/00, Prerefunded
                1/01/97 at 102..............     1,038
      1,000   De Kalb County, Georgia, Water
                & Sewer Revenue Bonds,
                7.00%, 10/01/06.............     1,054
      1,000   Delaware Transportation
                Authority, Transportation
                System Revenue Bonds, 6.50%,
                7/01/11, Prerefunded 7/01/01
                at 102......................     1,090
      1,000   Fairfax County Virginia Water
                Authority, Revenue Bonds,
                6.00%, 4/01/22..............     1,003
      1,000   Georgia State, General
                Obligation Bonds, Series E,
                6.75%, 12/01/02.............     1,111
        500   Georgia State, General
                Obligation Bonds, Series F,
                6.50%, 12/01/06.............       556
        500   Hawaii State, General
                Obligation Bonds, Series BS,
                6.70%, 9/01/97..............       516
      1,000   Hawaii State, General
                Obligation Bonds, Series CJ,
                6.20%, 1/01/12..............     1,037
      1,500   Intermountain Power Agency,
                Utah, Power Supply Revenue
                Bonds, Series D, 8.375%,
                7/01/12.....................     1,587
      1,000   Kentucky State Housing Corp.,
                Revenue Bonds, Series A,
                6.00%, 7/01/10..............     1,008
      1,155   Maryland State Department of
                Transportation, Construction
                Revenue Bonds, Second Issue,
                6.80%, 11/01/05, Prerefunded
                11/01/99 at 102.............     1,255
      1,000   Massachusetts State
                Consolidated Loan, Series A,
                7.50%, 3/01/03, Prerefunded
                3/01/00 at 102..............     1,112
        500   Massachusetts State
                Consolidated Loan, Series A,
                7.63%, 6/01/08, Prerefunded
                6/01/01 at 102..............       571
      1,625   Michigan State Housing
                Development Authority,
                Revenue Bonds, Series A,
                6.75%, 12/01/14.............     1,689
      1,590   Minnesota State Infrastructure
                Development, General
                Obligation Bonds, 6.80%,
                8/01/03, Prerefunded 8/01/00
                at 100......................     1,712
      1,400   Mississippi State, General
                Obligation Bonds, 6.00%,
                2/01/09.....................     1,455
      1,475   Montana State, General
                Obligation Bonds, Long Range
                Building Program, Series C,
                6.00%, 8/01/13..............     1,516
      1,000   New Castle County, Delaware,
                General Obligation Bonds,
                6.25%, 10/15/01.............     1,071
 
<CAPTION>
FACE AMOUNT                                    VALUE
   (000)                                       (000)
- ------------------------------------------------------
<C>           <S>                             <C>
$     1,000   New York State Local
                Government Assistance Corp.,
                Revenue Bonds, Series B,
                7.50%, 4/01/20, Prerefunded
                4/01/01 at 102..............  $  1,136
        500   Ohio State, General Obligation
                Bonds, 6.20%, 8/01/12.......       527
      1,000   Ohio State Housing Finance
                Agency, Residential Mortgage
                Revenue Bonds, Series A-1,
                6.20%, 9/01/14..............     1,014
      1,000   Reedy Creek Improvement
                District, Florida, Utility
                Revenue Bonds, Series 91-1,
                6.50%, 10/01/16, Prerefunded
                10/01/01 at 101.............     1,091
      1,350   San Antonio, Texas, General
                Obligation Bonds, 6.50%,
                8/01/14.....................     1,415
      1,000   Virginia Beach, Virginia,
                General Obligation Bonds,
                6.00%, 9/01/10..............     1,038
        500   Virginia State Housing
                Development Authority,
                Commonwealth Mortgage
                Revenue Bonds, Series B,
                6.60%, 1/01/12..............       524
      1,000   Virginia State Housing
                Development Authority,
                Commonwealth Mortgage
                Revenue Bonds, Series B,
                6.65%, 1/01/13..............     1,048
      1,000   Washington State, General
                Obligation Bonds, Series B,
                6.20%, 6/01/01..............     1,061
        500   Washington Suburban Sanitary
                District, General Obligation
                Revenue Bonds, 6.50%,
                11/01/05, Prerefunded
                11/01/01 at 102.............       548
                                              --------
  TOTAL FIXED RATE INSTRUMENTS (Cost
$30,287)....................................    30,856
                                              --------
TOTAL TAX-EXEMPT INSTRUMENTS (97.3%) (Cost
$30,587)....................................    31,156
                                              --------
TOTAL INVESTMENTS (97.3%) (Cost $30,587)....    31,156
                                              --------
</TABLE>
 
<TABLE>
<S>                                         <C>        <C>
OTHER ASSETS (2.8%)
  Cash....................................  $      67
  Interest Receivable.....................        644
  Receivable for Portfolio Shares Sold....        195
  Other...................................          7        913
                                            ---------
LIABILITIES (-0.1%)
  Professional Fees Payable...............        (11)
  Investment Advisory Fees Payable........         (5)
  Administrative Fees Payable.............         (5)
  Custodian Fees Payable..................         (2)
  Directors' Fees and Expenses Payable....         (1)
  Other Liabilities.......................         (8)       (32)
                                            ---------  ---------
NET ASSETS (100%)....................................    $32,037
                                                       ---------
                                                       ---------
NET ASSETS CONSIST OF:
Paid in Capital......................................    $31,428
Undistributed Net Investment Income..................        140
Accumulated Net Realized Loss........................       (100)
Unrealized Appreciation on Investments...............        569
                                                       ---------
NET ASSETS...........................................    $32,037
                                                       ---------
                                                       ---------
</TABLE>
 
The accompanying notes are an integral part of the financial statements. (Pages
                                    182-188)
 
- --------------------------------------------------------------------------------
Municipal Bond Portfolio
 
                                      128
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
STATEMENT OF NET ASSETS (UNAUDITED)
JUNE 30, 1996
- --------------------------------------------------------------------------------
 
THE MUNICIPAL BOND PORTFOLIO (CONT.)
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>
                                             AMOUNT
                                             (000)
- ----------------------------------------------------
<S>                             <C>         <C>
CLASS A:
NET ASSETS................................  $31,869
NET ASSET VALUE, OFFERING AND
  REDEMPTION PRICE PER SHARE
  Applicable to 3,136,557 outstanding
   $0.001 par value shares (authorized
   500,000,000 shares)....................    $10.16
                                            --------
                                            --------
CLASS B:
                                               $168
NET ASSETS................................
NET ASSET VALUE, OFFERING AND
  REDEMPTION PRICE PER SHARE
  Applicable to 16,541 outstanding $0.001
   par value shares (authorized
   500,000,000 shares)....................    $10.16
                                            --------
                                            --------
</TABLE>
 
- ------------------------------------------------
(c) -- Security is valued at cost -- See note A-1 to financial statements
 
Variable/Floating Rate Instruments. The interest rate changes on these
instruments are based upon a designated base rate. These instruments are payable
on demand and are secured by a letter of credit or other support agreements.
 
Maturity dates disclosed for Variable/Floating Rate Instruments are the ultimate
maturity dates. The effective maturity dates for such securities are the next
interest reset dates which are seven days or less.
 
Prerefunded Bonds. Outstanding bonds have been refunded to the first call date
(prerefunded date) by the issuance of new bonds. Principal and interest are paid
from monies escrowed in U.S. Treasury securities. Prerefunded bonds are
generally re-rated AAA due to the Treasury escrow.
 
The accompanying notes are an integral part of the financial statements. (Pages
                                    182-188)
 
- --------------------------------------------------------------------------------
                                                        Municipal Bond Portfolio
 
                                      129
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
 
OVERVIEW
- --------------------------------------------------------------------------------
 
THE MONEY MARKET PORTFOLIO
 
COMPOSITION OF NET ASSETS (JUNE 30, 1996)
 
EDGAR REPRESENTATION OF DATA POINTS USED IN PRINTED GRAPHIC
 
<TABLE>
<S>                                        <C>
Certificates of Deposit                        18.9%
Commercial Paper                               47.8%
Corporate Floating Rate Note                    2.4%
U.S. Government Agency Discount Notes           6.5%
U.S. Government Agency Floating Rate
Notes                                          20.2%
U.S. Treasury Bill                              1.8%
Other                                           2.4%
</TABLE>
 
COMPARATIVE MONTHLY AVERAGE YIELDS
 
EDGAR REPRESENTATION OF DATA POINTS USED IN PRINTED GRAPHIC
 
<TABLE>
<CAPTION>
           MONEY MARKET PORTFOLIO    DONOGHUE'S SEC
<S>        <C>                      <C>
                     30-Day Yields     30-Day Yields
Jan.                          5.11              5.05
Feb.                          4.90              4.85
Mar.                          4.82              4.76
Apr.                          4.80              4.75
May                           4.81              4.74
Jun.                          4.89              4.76
</TABLE>
 
- ------------------------------------------------
 
INVESTMENTS IN SHARES OF THE PORTFOLIO ARE NEITHER INSURED NOR GUARANTEED BY THE
U.S. GOVERNMENT AND THERE IS NO ASSURANCE THAT THE PORTFOLIO WILL MAINTAIN A
STABLE NET ASSET VALUE OF $1.00 PER SHARE. YIELDS WILL FLUCTUATE AS MARKET
CONDITIONS CHANGE.
 
The Money Market Portfolio's investment objectives are to maximize current
income and preserve capital while maintaining high levels of liquidity through
investing in high quality money market instruments which have effective
maturities of one year or less. The Portfolio's average maturity (on a
dollar-weighted basis) will not exceed 90 days. The Portfolio will purchase only
securities having a remaining maturity of one year or less. The Portfolio is
expected to maintain a net asset value of $1.00 per share. There can be no
assurance, however, that the Portfolio will be successful in maintaining a net
asset value of $1.00 per share.
 
The seven day yield and seven day effective yield (which assumes an
annualization of the current yield with all dividends reinvested) for the
Portfolio as of June 30, 1996 were 4.89% and 5.00%, respectively. As with all
money market portfolios, the seven day yields are not necessarily indicative of
future performance.
 
The Fed began the year by cutting interest rates (from 5.5% to 5.25% on the 31st
of January). But from that point on short term interest rates moved uniformly in
an upward direction. This came as a big surprise to most money market
participants because when the year began they believed that the economy was very
weak. In January leading economists were predicting that the Fed would be
required to ease interest rates dramatically to stimulate the economy. Calls for
a full percentage point cut were not uncommon. Instead, the U. S. economy showed
surprising strength, particularly in the housing and job creation categories.
These key components proved that the string of Fed easings, which had begun in
July of 1995, was beginning to show results. So great has been the strength of
the American economy that the Fed is now expected to hike interest rates this
summer in an effort to slow things down and avoid an increase in inflation.
 
At the beginning of each spring month the number of people on non-farm payrolls
presented a new shock that sent interest rates higher. March's report, which
revealed that a staggering 705,000 jobs had been created, was a particular
surprise. It led to some of the biggest one day losses in the bond market this
year. We chose to use these setbacks as buying opportunities and took advantage
of the higher yields available. At those times we bought longer dated securities
for the portfolio to extend its weighted average maturity. Not until summer did
the market finally seem comfortable with the conclusion that the strength
promised in the spring's employment reports had been real. Since that time
opportunities to extend at attractive levels have been rare. Gradually, since
 
- --------------------------------------------------------------------------------
Money Market Portfolio
 
                                      130
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
 
OVERVIEW
- --------------------------------------------------------------------------------
THE MONEY MARKET PORTFOLIO (CONT.)
the first of the year we have increased the percentage of the Portfolio that is
devoted to highly-rated commercial paper. This came as we decreased our holdings
of agency discount notes. This was done to take advantage of the higher yields
available on commercial paper.
 
We are pleased to report that the Portfolio continues to meet its goal of
providing as high a level of interest income as is consistent with maintaining
liquidity and stability of principal, and that the Portfolio still holds only
high quality securities with over 90% of assets invested in securities rated
A1+/P1.
 
Gerald Barth
PORTFOLIO MANAGER
 
Abigail Jones Feder
PORTFOLIO MANAGER
 
Kenneth R. Holley
PORTFOLIO MANAGER
 
July 1996
 
- --------------------------------------------------------------------------------
                                                          Money Market Portfolio
 
                                      131
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
STATEMENT OF NET ASSETS (UNAUDITED)
JUNE 30, 1996
- --------------------------------------------------------------------------------
 
THE MONEY MARKET PORTFOLIO
 
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>
   FACE                                                         AMORTIZED
  AMOUNT                                                           COST
  (000)                                                           (000)
- ------------------------------------------------------------
<C>         <S>                                                 <C>
MONEY MARKET INSTRUMENTS (97.6%)
  U.S. GOVERNMENT AND AGENCY OBLIGATIONS (28.5%)
    AGENCY DISCOUNT NOTES (6.5%)
            Federal Home Loan Bank
$   20,000  4.93%, 8/30/96....................................  $   19,836
            Federal National Mortgage Corp.
    20,000  4.95%, 9/5/96.....................................      19,818
    30,000  5.16%, 9/20/96....................................      29,652
                                                                ----------
                                                                    69,306
                                                                ----------
    AGENCY FLOATING RATE NOTES (20.2%)
            Federal National Mortgage Association
    20,000  5.34%, 8/16/96....................................      19,999
    20,000  5.39%, 10/11/96...................................      19,995
    25,000  5.34%, 11/20/96...................................      24,993
    25,000  5.29%, 4/11/97....................................      24,992
    65,000  5.42%, 9/2/97.....................................      65,000
    13,000  5.54%, 7/26/99....................................      12,957
                                                                ----------
                                                                   167,936
                                                                ----------
            Student Loan Marketing Association
    46,000  5.53%, 10/30/97...................................      46,043
                                                                ----------
                                                                   213,979
                                                                ----------
    U.S. TREASURY BILL (1.8%)
    20,000  5.05%, 3/6/97.....................................      19,304
                                                                ----------
  TOTAL U.S. GOVERNMENT AND AGENCY OBLIGATIONS
            (Cost $302,589)...................................     302,589
                                                                ----------
  COMMERCIAL PAPER (47.8%)
    FINANCE (47.8%)
    43,000  Abbey National North America 5.35%, 11/29/96......      42,035
    25,000  ABN-AMRO North America Finance, Inc. 5.30%,
              7/11/96.........................................      24,963
    20,000  ABN-AMRO North America Finance, Inc. 4.96%,
              8/27/96.........................................      19,843
    20,000  AT&T Capital Corp. 5.25%, 7/9/96..................      19,977
    20,000  Ameritech Capital Funding Corp. 5.25%, 7/2/96.....      19,997
    10,000  Ameritech Capital Funding Corp. 5.27%, 7/19/96....       9,974
    30,000  Coca-Cola Co. 5.28%, 8/8/96.......................      29,833
    25,000  Daimler-Benz North America Corp. 5.29%, 8/16/96...      24,831
    30,000  Daimler-Benz North America Corp. 5.44%,
              11/14/96........................................      29,384
    30,000  General Electric Capital Corp. 5.19%, 9/4/96......      29,719
    25,000  Harvard University 5.34%, 7/23/96.................      24,918
    50,000  Koch Industries 5.30%, 7/15/96....................      49,897
    20,000  McDonald's Corp. 5.35%, 7/15/96...................      19,958
    22,906  MetLife Funding, Inc. 5.27%, 7/26/96..............      22,822
    15,000  Sandoz Corp. 5.27%, 7/17/96.......................      14,965
    20,000  SunTrust Banks, Inc. 5.29%, 7/1/96................      20,000
 
<CAPTION>
   FACE                                                         AMORTIZED
  AMOUNT                                                           COST
  (000)                                                           (000)
- ------------------------------------------------------------
<C>         <S>                                                 <C>
$    5,200  Toys 'R' Us, Inc. 5.27%, 7/2/96...................  $    5,199
    50,000  UBS Finance 5.55%, 7/1/96.........................      50,000
     7,000  Unilever Capital Corp. 5.33%, 12/13/96............       6,829
     9,295  Weyerhaeuser Co. 5.28%, 8/6/96....................       9,246
    15,300  Weyerhaeuser Co. 5.28%, 8/7/96....................      15,217
    18,000  Weyerhaeuser Co. 5.28%, 8/8/96....................      17,900
                                                                ----------
  TOTAL COMMERCIAL PAPER (Cost $507,507)......................     507,507
                                                                ----------
  CORPORATE FLOATING RATE NOTE (2.4%)
    FINANCE (2.4%)
    25,000  First Chicago Corp. 5.34%, 12/2/96
              (Cost $24,996)..................................      24,996
                                                                ----------
  CERTIFICATES OF DEPOSIT (18.9%)
    30,000  Commerzbank (Yankee) 5.33%, 9/25/96...............      29,995
    20,000  Commerzbank (Yankee) 5.52%, 12/4/96...............      19,989
    45,000  Deutsche Bank (Yankee) 5.37%, 7/10/96.............      45,000
    32,000  National Westminster Bank plc (Yankee) 5.36%,
              7/10/96.........................................      32,000
    50,000  Royal Bank of Canada (Yankee) 6.05%, 6/11/97......      50,000
    24,000  Societe Generale Bank (Yankee) 5.33%, 7/8/96......      24,000
                                                                ----------
  TOTAL CERTIFICATES OF DEPOSIT (Cost $200,984)...............     200,984
                                                                ----------
TOTAL MONEY MARKET INSTRUMENTS (Cost $1,036,076)..............   1,036,076
                                                                ----------
SHORT-TERM INVESTMENT (2.4%)
  REPURCHASE AGREEMENT (2.4%)
    26,082  Goldman Sachs & Co, 5.375%, dated 6/28/96, due
              7/01/96, to be repurchased at $26,094,
              collateralized by $23,920 U.S. Treasury Bonds,
              8.75%, due 11/15/08, valued at $26,623 (Cost
              $26,082)........................................      26,082
                                                                ----------
TOTAL INVESTMENTS (100.0%) (Cost $1,062,158)..................   1,062,158
                                                                ----------
</TABLE>
 
<TABLE>
<S>                                                 <C>      <C>
OTHER ASSETS (0.3%)
  Interest Receivable.............................  $ 3,386
  Other...........................................       41       3,427
                                                    -------
LIABILITIES (-0.3%)
  Dividends Payable...............................   (2,039)
  Investment Advisory Fees Payable................     (837)
  Administrative Fees Payable.....................     (151)
  Custodian Fees Payable..........................      (31)
  Directors' Fees and Expenses Payable............      (18)
  Other Liabilities...............................     (125)     (3,201)
                                                    -------  ----------
NET ASSETS (100%)..........................................  $1,062,384
                                                             ----------
                                                             ----------
</TABLE>
 
The accompanying notes are an integral part of the financial statements. (Pages
                                    182-188)
 
- --------------------------------------------------------------------------------
Money Market Portfolio
 
                                      132
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
STATEMENT OF NET ASSETS (UNAUDITED)
JUNE 30, 1996
- --------------------------------------------------------------------------------
 
THE MONEY MARKET PORTFOLIO (CONT.)
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>
                                                               AMOUNT
                                                               (000)
- ------------------------------------------------------------
<S>                                                 <C>      <C>
NET ASSETS CONSIST OF:
Paid in Capital............................................  $1,062,871
Accumulated Net Realized Loss..............................        (487)
                                                             ----------
NET ASSETS.................................................  $1,062,384
                                                             ----------
                                                             ----------
NET ASSET VALUE, OFFERING AND
  REDEMPTION PRICE PER SHARE
  Applicable to 1,062,875,799 outstanding $0.001 par value
  shares (authorized 4,000,000,000 shares).................       $1.00
                                                             ----------
                                                             ----------
</TABLE>
 
- ------------------------------------------------------------
 
Floating Rate -- The interest rate changes on these instruments are based on
changes in a designated base rate. The rates shown are those in effect at June
30, 1996.
 
Maturity dates disclosed for Floating Rate Instruments are the ultimate maturity
dates. The effective maturity dates for such securities are the next interest
reset dates.
 
Interest rates disclosed for Commercial Paper, Agency Discount Notes and the
Treasury Bill represent effective yields at June 30, 1996.
 
The accompanying notes are an integral part of the financial statements. (Pages
                                    182-188)
 
- --------------------------------------------------------------------------------
                                                          Money Market Portfolio
 
                                      133
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
 
OVERVIEW
- --------------------------------------------------------------------------------
 
THE MUNICIPAL MONEY MARKET PORTFOLIO
 
COMPOSITION OF NET ASSETS (AT JUNE 30, 1996)
 
EDGAR REPRESENTATION OF DATA POINTS USED IN PRINTED GRAPHIC
 
<TABLE>
<S>                                   <C>
Fixed Rate Instruments                    37.6%
U.S. Government & Agency Obligations       3.9%
Variable/Floating Rate Instruments        59.3%
Other                                     -0.8%
</TABLE>
 
COMPARATIVE MONTHLY AVERAGE YIELDS
 
EDGAR REPRESENTATION OF DATA POINTS USED IN PRINTED GRAPHIC
 
<TABLE>
<CAPTION>
            MUNICIPAL MONEY
           MARKET PORTFOLIO    DONOGHUE'S SEC
             30-DAY YIELDS     30-DAY YIELDS
<S>        <C>                <C>
Jan.                    2.96              3.01
Feb.                    2.94              2.86
Mar.                    2.88              2.79
Apr.                    3.01              2.96
May                     3.25              3.19
Jun.                    3.06              2.87
</TABLE>
 
- ------------------------------------------------
 
INVESTMENTS IN SHARES OF THE PORTFOLIO ARE NEITHER INSURED NOR GUARANTEED BY THE
U.S. GOVERNMENT AND THERE IS NO ASSURANCE THAT THE PORTFOLIO WILL MAINTAIN A
STABLE NET ASSET VALUE OF $1.00 PER SHARE. YIELDS WILL FLUCTUATE AS MARKET
CONDITIONS CHANGE.
 
The Municipal Money Market Portfolio's investment objectives are to maximize
current income that is exempt from Federal income tax and preserve capital while
maintaining high levels of liquidity through investing in high quality municipal
money market instruments which earn interest exempt from Federal income tax in
the opinion of bond counsel for the issuer. The Portfolio will purchase only
securities having a remaining maturity of one year or less. Under normal
circumstances, the Portfolio will invest at least 80% of its assets in
tax-exempt municipal securities. Additionally, the Portfolio will not purchase
private activity bonds, the interest from which is subject to alternative
minimum tax. Interest on tax-exempt municipal securities may be subject to state
and local taxes. The Portfolio's average maturity (on a dollar-weighted basis)
will not exceed 90 days. The Portfolio is expected to maintain a net asset value
of $1.00 per share. There can be no assurance, however, that the Portfolio will
be successful in maintaining a net asset value of $1.00 per share.
 
The seven day yield and seven day effective yield (assumes an annualization of
the current yield with all dividends reinvested) for the Municipal Money Market
Portfolio as of June 30, 1996 were 3.10% and 3.15%, respectively. The seven day
taxable equivalent yield and the seven day taxable equivalent effective yield
for Municipal Money Market Portfolio at June 30, 1996, assuming Federal income
tax rate of 39.6% (maximum rate) were 5.15% and 5.22%, respectively. The seven
day yields are not necessarily indicative of future performance.
 
During the first half of the year, the taxable market experienced a dramatic
sell-off triggered by investors' concerns regarding the relative strength of the
economy and the potential for an increase in inflation. These events in the
economy and the taxable sectors of the market had little effect on the municipal
money market sector during the first half of 1996. Because the municipal money
market is driven by supply and demand, this sector typically functions
independently of the rest of the fixed income markets. The flat yield curve
shape that had characterized the municipal money market for much of 1995
continued throughout most of the first quarter. In March, rates in the overnight
to six month sectors increased approximately 20 basis points while the remainder
of the curve remained flat. The adjustment in the short end of the curve did
occur in response to the increase in rates in the taxable sector. As the Federal
tax deadline approached in mid-April, the market sold off as bond funds were
forced to sell short securities to meet redemptions. This increase in supply
caused the curve
 
- --------------------------------------------------------------------------------
Municipal Money Market Portfolio
 
                                      134
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
 
OVERVIEW
- --------------------------------------------------------------------------------
THE MUNICIPAL MONEY MARKET PORTFOLIO (CONT.)
to shift to a positive slope which persisted for the balance of the second
quarter. Rates across the municipal money market curve increased during May
creating a parallel shift.
 
The Portfolio experienced tremendous growth during the first half of 1996 with
the net asset size increasing 71%. The portfolio finished June 1996 with net
assets of $770 million. Much of the growth occurred during April, which was
fortuitous as April represented a buying opportunity. Overall, the asset
allocation throughout the first half of the year remained consistent with
commercial paper ranging from 30-40%, tax-exempt notes ranged from 3-4%, and
daily and weekly variable rate puttable issues fluctuating between 50% and 60%
of the Portfolio. The weighted average maturity of the portfolio ranged from 15
to 40 days and ended June with a weighted average maturity of 31 days.
 
Gerald P. Barth
PORTFOLIO MANAGER
 
Abigail Jones Feder
PORTFOLIO MANAGER
 
July 1996
 
- --------------------------------------------------------------------------------
                                                Municipal Money Market Portfolio
 
                                      135
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
STATEMENT OF NET ASSETS (UNAUDITED)
JUNE 30, 1996
- --------------------------------------------------------------------------------
 
THE MUNICIPAL MONEY MARKET PORTFOLIO
 
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>
   FACE                                                         AMORTIZED
  AMOUNT                                                           COST
  (000)                                                           (000)
- ------------------------------------------------------------
<C>         <S>                                                 <C>
TAX-EXEMPT INSTRUMENTS (96.9%)
  FIXED RATE INSTRUMENTS (37.6%)
      NOTES (6.0%)
$   2,000   Broward County, Florida, General Obligation Bonds,
              7.88%, 1/01/12, Prerefunded 7/01/96 at 102......  $   2,061
    1,000   City of San Antonio, Texas, Revenue Bonds, 7.90%,
              5/01/14,
              Prerefunded 5/01/97 at 101.5....................      1,049
    1,500   Delaware State, General Obligation Bonds, Series
              A, 4.25%, 3/01/97...............................      1,506
    2,445   Hawaii State, General Obligation Bonds, Series BK,
              6.60%, 4/01/99,
              Prerefunded 4/01/97 at 101.5....................      2,531
    5,000   Idaho State, 4.50%, 6/30/97, TANS.................      5,029
    1,500   Los Angeles, California, Unified School District,
              4.50%, 6/30/97, TRANS...........................      1,510
    2,500   Maine State, 4.50%, 6/27/97, TANS.................      2,515
    4,130   Massachusetts State, General Obligation Bonds,
              Series A, 4.25%, 6/10/97........................      4,146
    1,000   Metropolitan Transportation Authority, New York,
              Series F, 8.38%, 7/01/05,
              Prerefunded 7/01/96 at 102......................      1,020
    9,000   Michigan State, General Obligation Bonds, 4.00%,
              9/30/96.........................................      9,011
    1,000   Orlando & Orange County, Florida, Expressway
              Authority Revenue Bonds, 7.25%, 7/01/14,
              Prerefunded 7/01/96 at 102......................      1,020
    2,000   Shelby County, Tennessee, General Obligation
              Bonds, 6.40%, 8/01/96...........................      2,005
    7,500   Texas State, Series 95A, 4.75%, 8/30/96, TRANS....      7,511
    2,000   Washington State, General Obligation Bonds, Series
              R-94A, 3.70%, 8/01/96...........................      2,000
    3,575   Wisconsin State, Series B, 7.25%, 5/01/08,
              Prerefunded 5/01/97 at 101......................      3,710
                                                                ----------
                                                                   46,624
                                                                ----------
      COMMERCIAL PAPER (31.6%)
   10,000   Baltimore County, Maryland, 3.55%, 10/02/96.......     10,000
    3,000   Beaver County, Pennsylvania, Industrial
              Development Authority, Duquesne Light, Series
              90, 3.15%, 8/09/96..............................      3,000
      350   Burke County, Georgia, Development Authority,
              Oglethorpe, Series 92A, 3.35%, 7/09/96..........        350
    4,675   Burke County, Georgia, Development Authority,
              Oglethorpe, Series 92A, 3.70%, 7/09/96..........      4,675
    6,000   Burlington, Kansas, Kansas City Power & Light Co.,
              Series 89A, 3.70%, 8/14/96......................      6,000
    6,000   City & County of Honolulu, Hawaii, 3.55%,
              9/12/96.........................................      6,000
    3,500   City of Austin, Texas, Series A, 3.40%, 9/09/96...      3,500
 
<CAPTION>
   FACE                                                         AMORTIZED
  AMOUNT                                                           COST
  (000)                                                           (000)
- ------------------------------------------------------------
<C>         <S>                                                 <C>
$   4,530   City of Dallas, Texas, Series A, 3.60%,
              10/22/96........................................  $   4,530
            City of Mount Vernon, Indiana, General Electric,
              Series 89A,
    4,000     3.20%, 8/12/96..................................      4,000
    4,000     3.55%, 10/18/96.................................      4,000
            City of San Antonio, Texas,
    1,900     3.15%, 8/09/96..................................      1,900
    1,500     3.45%, 10/23/96.................................      1,500
    3,000     3.70%, 10/23/96.................................      3,000
    1,200   Converse County, Wyoming, Series 88, 3.60%,
              8/14/96.........................................      1,200
            Gainsville, Florida,
    1,598     3.20%, 8/08/96..................................      1,598
    2,525     3.45%, 9/09/96, Series C........................      2,525
    4,000   Georgia Municipal Gas Authority, 3.65%,
              10/16/96........................................      4,000
            Houston, Texas, Series A,
    4,700     3.70%, 9/10/96..................................      4,700
    6,000     5.70%, 10/17/96.................................      6,000
    2,000   Illinois Development Finance Authority, Series
              93A, 3.60%, 10/23/96............................      2,000
    2,100   Illinois Health & Educational Facilities, Series
              89A, 3.65%, 10/09/96............................      2,100
    4,000   Independence, Missouri, Water Utility Revenue,
              3.70%, 7/10/96..................................      4,000
            Intermountain Power Agency, Utah, Series E,
    2,400     3.80%, 7/01/96..................................      2,400
      200     3.85%, 7/01/96..................................        200
    2,900     3.55%, 11/13/96.................................      2,900
            Jacksonville, Florida, Electric Authority,
    3,100     3.55%, 9/18/96..................................      3,100
    7,700     3.60%, 10/23/96.................................      7,700
            Jasper County, Indiana,
    3,600     3.65%, 8/19/96, Series 88B......................      3,600
    2,000     3.65%, 8/19/96, Series 88C......................      2,000
    1,100   Lehigh County, Pennsylvania, Series A, 3.45%,
              9/09/96.........................................      1,100
    6,600   Massachusetts Health & Education Facilities
              Authority, Harvard University, Series L, 3.55%,
              10/22/96........................................      6,600
   10,000   Michigan State, Underground Storage Tank Financial
              Assurance Authority, Series I, 3.45%, 8/15/96...     10,000
    3,000   Montgomery County, Maryland, Series 95, 3.65%,
              8/16/96.........................................      3,000
    3,000   Montgomery County, Pennsylvania, 3.50%, 7/12/96...      3,000
    6,020   Montgomery, Alabama, Industrial Development Board,
              General Electric Series, 3.60%, 8/06/96.........      6,020
    7,300   Nashville & Davidson County, Tennessee, 3.70%,
              8/01/96.........................................      7,300
            New York City, New York, Water Finance Authority,
      800     3.75%, 8/08/96..................................        800
    6,900     3.60%, 9/10/96..................................      6,900
</TABLE>
 
The accompanying notes are an integral part of the financial statements. (Pages
                                    182-188)
 
- --------------------------------------------------------------------------------
Municipal Money Market Portfolio
 
                                      136
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
STATEMENT OF NET ASSETS (UNAUDITED)
JUNE 30, 1996
- --------------------------------------------------------------------------------
 
THE MUNICIPAL MONEY MARKET PORTFOLIO (CONT.)
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>
   FACE                                                         AMORTIZED
  AMOUNT                                                           COST
  (000)                                                           (000)
- ------------------------------------------------------------
<C>         <S>                                                 <C>
</TABLE>
 
  FIXED RATE INSTRUMENTS (CONT.)
<TABLE>
<C>         <S>                                                 <C>
$   4,025   North Carolina Eastern Municipal Power, 3.60%,
              7/09/96.........................................  $   4,025
      300   Northeastern Pennsylvania Hospital Authority,
              Series B, 3.60%, 10/18/96.......................        300
    2,990   Omaha, Nebraska, Public Power District, 3.60%,
              10/18/96........................................      2,990
    1,000   Peninsula Ports Authority, Virginia, Series 92,
              3.55%, 8/20/96..................................      1,000
    3,000   Petersburg, Indiana, Indiana Power & Light, Series
              91, 3.60%, 10/18/96.............................      3,000
    2,200   Platte River Authority, Colorado, 3.10%,
              8/13/96.........................................      2,200
    8,000   Puerto Rico Industrial, Medical & Environmental
              Pollution Control Authority Revenue Bonds,
              3.55%, 10/10/96.................................      8,000
            Rochester, Minnesota, Health Facilities, Mayo
              Clinic,
    1,000     3.65%, 10/24/96, Series B.......................      1,000
    1,500     3.65%, 10/24/96, Series C.......................      1,500
    1,065     3.65%, 10/24/96, Series E.......................      1,065
    1,500     3.65%, 10/16/96, Series F.......................      1,500
    2,800   Salt Lake City, Utah, 3.60%, 9/11/96..............      2,800
            Salt River, Arizona,
    4,600     3.30%, 8/07/96..................................      4,600
    2,006     3.20%, 8/08/96..................................      2,006
    5,000     3.30%, 8/08/96..................................      5,000
    2,000     3.15%, 8/09/96..................................      2,000
    6,000     3.60%, 10/15/96.................................      6,000
    5,750   State of Louisiana, General Obligation Bonds,
              3.65%, 10/16/96.................................      5,750
            Sunrise State, Florida, Government Finance
              Authority,
    4,470     3.45%, 10/08/96.................................      4,470
    3,750     3.45%, 10/09/96.................................      3,750
            Sunshine State, Florida, Government Finance
              Authority, Series 86,
    9,850     3.70%, 8/15/96..................................      9,850
    2,000     3.45%, 9/09/96..................................      2,000
    5,000   Sweetwater County, Wyoming, Series 88A, 3.70%,
              8/15/96.........................................      5,000
    2,000   Texas Municipal Power Agency, 3.55%, 10/22/96.....      2,000
            Trimble County, Kentucky, Louisville Gas &
              Electric Series,
    5,000     3.25%, 8/07/96..................................      5,000
    1,000     3.60%, 10/18/96.................................      1,000
    5,500   University of Minnesota, Series A, 3.60%,
              10/22/96........................................      5,500
    2,500   Vanderbilt University, Tennessee, Series 89A,
              3.55%, 10/22/96.................................      2,500
                                                                ----------
                                                                  243,004
                                                                ----------
  TOTAL FIXED RATE INSTRUMENTS................................    289,628
                                                                ----------
<CAPTION>
   FACE                                                         AMORTIZED
  AMOUNT                                                           COST
  (000)                                                           (000)
- ------------------------------------------------------------
<C>         <S>                                                 <C>
  VARIABLE/FLOATING RATE INSTRUMENTS (59.3%)
      DAILY VARIABLE RATE BONDS (41.4%)
$   1,500   Ascension Parish, Louisiana, Pollution Control
              Revenue Bonds, Shell Oil Project, 3.60%,
              9/01/23.........................................  $   1,500
    2,400   Birmingham, Alabama, Medical Clinic Board Revenue
              Bonds, University of Alabama Hospital Services
              Fund, 3.80%, 12/01/26...........................      2,400
            Burke County, Georgia, Development Authority,
    5,500     3.60%, 7/01/24..................................      5,500
    7,300     3.70%, 4/01/25..................................      7,300
    5,500     3.75%, 7/01/24, Series 94.......................      5,500
            California Pollution Control Financing Authority,
              Southern Edison,
    8,100     3.45%, 2/28/08, Series 86A......................      8,100
    2,000     3.45%, 2/28/08, Series 86B......................      2,000
    3,400     3.45%, 2/28/08, Series 86C......................      3,400
    4,735     3.45%, 2/28/08, Series 87D......................      4,735
    4,000   Chattanooga-Hamilton County, Tennessee, Hospital
              Authority Revenue Bonds, Erlanger
              Medical Center 3.80%, 10/01/17..................      4,000
            Chicago, Illinois, O'Hare International Airport
              Special Facilities Revenue Bonds, American
              Airlines, Inc. Project,
    4,200     3.70%, 12/01/17, Series A.......................      4,200
    4,200     3.70%, 12/01/17, Series B.......................      4,200
    4,200     3.70%, 12/01/17, Series C.......................      4,200
    4,200     3.70%, 12/01/17, Series D.......................      4,200
    3,500   Dade County, Florida, Industrial Development
              Authority, Florida Light & Power Co., 3.60%,
              6/01/21.........................................      3,500
    2,800   Delaware County, Pennsylvania, Industrial
              Development Authority, Series 95, 3.70%,
              12/01/09........................................      2,800
    1,700   Delta County, Michigan, Pollution Control Revenue
              Bonds, Mead Corp., 3.60%, 12/01/23..............      1,700
      600   District of Columbia, Revenue Bonds, 3.65%,
              10/01/22........................................        600
    4,200   East Baton Rouge Parish, Louisiana, Pollution
              Control Revenue Bonds, Exxon Project, 3.60%,
              11/01/19........................................      4,200
    4,900   Farmington, New Mexico, Pollution Control Revenue
              Bonds, Series A, 3.60%, 5/01/24.................      4,900
    1,400   Gulf Coast Waste Disposal Authority, Texas
              Pollution Control Revenue Bonds, Exxon Project,
              3.55%, 6/01/20..................................      1,400
    5,000   Hapeville, Georgia, Industrial Development
              Authority, Series 85, 3.60%, 11/01/15...........      5,000
   13,800   Harris County, Texas, Health Facilities
              Development Corp., Methodist Hospital, 3.70%,
              12/01/25........................................     13,800
</TABLE>
 
The accompanying notes are an integral part of the financial statements. (Pages
                                    182-188)
 
- --------------------------------------------------------------------------------
                                                Municipal Money Market Portfolio
 
                                      137
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
STATEMENT OF NET ASSETS (UNAUDITED)
JUNE 30, 1996
- --------------------------------------------------------------------------------
 
THE MUNICIPAL MONEY MARKET PORTFOLIO (CONT.)
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>
   FACE                                                         AMORTIZED
  AMOUNT                                                           COST
  (000)                                                           (000)
- ------------------------------------------------------------
<C>         <S>                                                 <C>
</TABLE>
 
  VARIABLE/FLOATING RATE INSTRUMENTS (CONT.)
<TABLE>
<C>         <S>                                                 <C>
            Harris County, Texas, Health Facilities
              Development Corp., St. Lukes Episcopal Series,
$   3,700     3.70%, 2/15/16..................................  $   3,700
    2,600     3.70%, 2/15/21..................................      2,600
            Harris County, Texas, Industrial Development,
              Pollution Control Revenue Bonds, Exxon Project,
    2,600     3.60%, 3/01/24, Series 84A......................      2,600
    2,600     3.60%, 3/01/24, Series 84B......................      2,600
    5,700   Hurley, New Mexico, Pollution Control Revenue
              Bonds, 3.60%, 12/01/15..........................      5,700
   15,000   Jackson County, Mississippi, Port Facility,
              Chevron Project, Series 93, 3.55%, 6/01/23......     15,000
      900   Kansas City, Kansas, Industrial Development
              Authority, Revenue Bonds, PQ Corp., 3.70%,
              8/01/15.........................................        900
    2,000   Lake Charles, Louisiana, Harbor & Terminal
              District Port Facilities, Series 84, 3.60%,
              11/01/11........................................      2,000
            Lincoln County, Wyoming, Pollution Control Revenue
              Bonds, Exxon Project,
    2,000     3.60%, 11/01/14, Series 84A.....................      2,000
    4,400     3.55%, 8/01/15, Series 84A......................      4,400
    2,500     3.60%, 11/01/14, Series 84B.....................      2,500
    2,500     3.60%, 11/01/14, Series 84C.....................      2,500
    2,500     3.60%, 11/01/14, Series 84D.....................      2,500
    3,120   Louisiana Public Facilities Authority, Industrial
              Development, Kenner Hotel Series, 3.60%,
              12/01/15........................................      3,120
            Maricopa County, Arizona, Pollution Control
              Revenue Bonds, Arizona Public Service Co.,
    4,500     3.55%, 5/01/29, Series B........................      4,500
    4,600     3.60%, 5/01/29, Series C........................      4,600
    3,500     3.60%, 5/01/29, Series E........................      3,500
    3,600     3.70%, 5/01/29, Series F........................      3,600
    1,000   Marshall County, West Virginia, Pollution Control
              Revenue Bonds, Mountaineer Carbon Co., 3.70%,
              12/01/20........................................      1,000
            Massachusetts Health & Education Facilities
              Authority,
    4,800     3.35%, 7/01/05, Series B........................      4,800
    6,100     3.35%, 7/01/05, Series C........................      6,100
    6,700   Michigan State Strategic Fund, Consumers Power,
              Series 88A, 3.55%, 4/15/18......................      6,700
            Missouri State Health & Educational Facilities
              Authority Revenue Bonds, Washington University,
    2,000     3.60%, 9/01/30, Series A........................      2,000
    3,500     3.60%, 9/01/30, Series B........................      3,500
            Monroe County, Georgia, Pollution Control Revenue
              Bonds, Georgia Power Co.,
    4,500     3.70%, 7/01/25, Series 1........................      4,500
    3,700     3.75%, 7/01/25, Series 2........................      3,700
<CAPTION>
   FACE                                                         AMORTIZED
  AMOUNT                                                           COST
  (000)                                                           (000)
- ------------------------------------------------------------
<C>         <S>                                                 <C>
$   4,100   New York City, New York, Cultural Resources,
              3.45%, 12/01/15.................................  $   4,100
            New York City, New York, General Obligation Bonds,
    5,000     3.60%, 8/15/23, Series B, Subseries B4..........      5,000
    1,500     3.60%, 8/15/18, Series B, Subseries B7..........      1,500
    1,500     3.60%, 8/01/15, Subseries A-5...................      1,500
            New York City, New York, Water Finance Authority,
              Water & Sewer System Revenue Bonds,
   11,000     3.60%, 6/15/23, Series 92C......................     11,000
   10,000     3.60%, 6/15/22, Series 94C......................     10,000
    6,000   New York State, Dormitory Authority Revenue Bonds,
              Cornell University, Series B, 3.45%, 7/01/25....      6,000
    2,500   New York State, Thruway Authority Revenue Bonds,
              3.50%, 1/01/24..................................      2,500
    1,000   Nueces River Authority, Texas, Pollution Control
              Revenue Bonds, Series 85, 3.80%, 12/01/99.......      1,000
    3,000   Ohio State Air Quality Development Authority
              Revenue Bonds, Series 85A, 3.75%, 12/01/15......      3,000
    4,100   Ohio State Air Quality Development Authority
              Revenue Bonds, Cincinnati Gas & Electric, Series
              B, 3.55%, 9/01/30...............................      4,100
    2,800   Parrish, Alabama, Industrial Development Board,
              Pollution Control Revenue Bonds, Alabama Power
              Co. Project, 3.70%, 6/01/15.....................      2,800
    2,400   Peninsula Ports Authority, Virginia, Coal Revenue
              Bonds, 3.60%, 7/01/16...........................      2,400
            Pennsylvania Higher Education Authority Revenue
              Bonds, Carnegie Mellon University,
    4,300     3.70%, 11/01/27, Series 95B.....................      4,300
    4,500     3.70%, 11/01/29, Series 95C.....................      4,500
    5,700     3.70%, 11/01/30, Series 95D.....................      5,700
    2,200   Philadelphia, Pennsylvania, Childrens Hospital,
              Series 92B, 3.60%, 3/01/27......................      2,200
    7,700   Philadelphia, Pennsylvania, Hospitals & Higher
              Educational Facilities Authority Revenue Bonds,
              Children's Hospital Project, Series A, 3.70%,
              3/01/27.........................................      7,700
            Platte County, Wyoming, Pollution Control Revenue
              Bonds,
    3,800     3.70%, 7/01/14, Series A........................      3,800
    1,000     3.70%, 7/01/14, Series B........................      1,000
            Port of Saint Helens, Oregon, Pollution Control
              Revenue Bonds, Portland General Electric Co.,
    2,000     3.55%, 4/01/10, Series A........................      2,000
    1,600     3.55%, 6/01/10, Series B........................      1,600
    1,400   Saint Charles Parish, Louisiana, Pollution Control
              Revenue Bonds, Shell Oil Project, 3.55%,
              10/01/22........................................      1,400
</TABLE>
 
The accompanying notes are an integral part of the financial statements. (Pages
                                    182-188)
 
- --------------------------------------------------------------------------------
Municipal Money Market Portfolio
 
                                      138
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
STATEMENT OF NET ASSETS (UNAUDITED)
JUNE 30, 1996
- --------------------------------------------------------------------------------
 
THE MUNICIPAL MONEY MARKET PORTFOLIO (CONT.)
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>
   FACE                                                         AMORTIZED
  AMOUNT                                                           COST
  (000)                                                           (000)
- ------------------------------------------------------------
<C>         <S>                                                 <C>
</TABLE>
 
  VARIABLE/FLOATING RATE INSTRUMENTS (CONT.)
<TABLE>
<C>         <S>                                                 <C>
$   5,000   Salt Lake County, Utah, Pollution Control Revenue
              Bonds, British Petroleum Co., 3.60%, 2/01/08....  $   5,000
    5,900   Salt Lake County, Utah, Pollution Control Revenue
              Bonds, SVC Station Holdings, 3.70%, 8/01/07.....      5,900
    4,900   Southwest, Texas, Higher Education Authority
              Revenue Bonds, Southern Methodist University,
              Series 85, 3.55%, 7/01/15.......................      4,900
    1,200   Sublette County, Wyoming, Pollution Control
              Revenue Bonds, Exxon Project, 3.55%, 11/01/14...      1,200
    1,100   Sweetwater County, Wyoming, Series 88B, 3.75%,
              1/01/14.........................................      1,100
    1,300   Texas State, Water Development Board Revenue
              Bonds, Series A, 3.80%, 3/01/15.................      1,300
    7,700   Valdez, Alaska, Marine Terminal Authority, Exxon
              Project, Series 85, 3.55%, 10/01/25.............      7,700
    3,000   West Side Calhoun County, Texas, Pollution Control
              Revenue Bonds, 3.70%, 12/01/15..................      3,000
                                                                ----------
                                                                  318,955
                                                                ----------
      WEEKLY VARIABLE RATE BONDS (17.9%)
    1,000   Albuquerque, New Mexico, Revenue Bonds, Series A,
              3.40%, 7/01/22..................................      1,000
    2,700   Allegheny County, Pennsylvania, Hospital
              Development Authority, Series B, 3.25%,
              9/01/20.........................................      2,700
            Beaver County, Pennsylvania, Industrial
              Development Authority, Duquesne Light,
    1,000     3.25%, 8/01/20, Series A........................      1,000
    1,000     3.25%, 8/01/09, Series B........................      1,000
    1,000   Brunswick & Glynn County, Georgia, Development
              Authority, Series 85, 3.55%, 12/01/15...........      1,000
    7,400   Burke County, Georgia, Development Authority,
              Oglethorpe, Series 93A, 3.30%, 1/01/16..........      7,400
      400   California Health Facilities Authority, Series A,
              3.15%, 1/01/16..................................        400
    5,800   Charlotte, North Carolina, Airport, Series 93A,
              3.30%, 7/01/16..................................      5,800
    1,000   City of Baltimore, Maryland, Pollution Control
              Revenue Bonds, General Motors Corp., 3.35%,
              2/01/00.........................................      1,000
    2,500   City of Columbia, Missouri, Special Revenue Bonds,
              Series 88A, 3.40%, 6/01/08......................      2,500
    1,500   City of Columbia, Missouri, Water & Electric
              Revenue Bonds, Series 85B, 3.40%, 12/01/15......      1,500
<CAPTION>
   FACE                                                         AMORTIZED
  AMOUNT                                                           COST
  (000)                                                           (000)
- ------------------------------------------------------------
<C>         <S>                                                 <C>
            City of Forsyth, Montana, Pollution Control
              Revenue Bonds,
$     300     3.30%, 6/01/13, Series B........................  $     300
      700     3.30%, 6/01/13, Series D........................        700
    2,600   City of Midlothian, Texas, Industrial Development
              Corp., Pollution Control Revenue Bonds, Box-Crow
              Cement Co., 4.10%, 12/01/09.....................      2,600
    1,000   City of Minnetonka, Minnesota, Multifamily, Cliffs
              Ridgedale, 3.45%, 9/15/25.......................      1,000
    1,600   City of San Antonio, Texas, Higher Education
              Authority, Trinity University, 3.45%, 4/01/04...      1,600
            Clark County, Nevada, Airport Revenue Bonds,
   16,800     3.30%, 7/01/12, Series 93A......................     16,800
    2,700     3.30%, 7/01/25, Series 95-A1....................      2,700
    4,000   Clark County, Nevada, Industrial Development
              Corp., Nevada Power Co., Series C, 3.15%,
              10/01/30........................................      4,000
    3,900   Clarksville, Tennessee, Public Building Authority,
              Revenue Bonds, 3.30%, 12/01/00..................      3,900
      180   Clear Creek County, Colorado, Revenue Bonds,
              Colorado Finance Pool Program, 3.40%, 6/01/98...        180
      600   Colorado Student Obligation Bond Authority,
              Student Loan Revenue Bonds, Series 91-C1, 3.30%,
              8/01/00.........................................        600
    5,700   Connecticut State, Special Tax Obligation Revenue
              Bonds, Series 1, 3.20%, 12/01/10................      5,700
    1,800   Dade County, Florida, Health Facilities Authority
              Revenue Bonds, Miami Children's Hospital
              Project, 3.30%, 9/01/25.........................      1,800
   16,800   Dade County, Florida, Water & Sewer Revenue Bonds,
              3.30%, 10/05/22.................................     16,800
    3,000   Foothill/Eastern California Toll Road Revenue
              Bonds, Series 95C, 3.10%, 1/02/35...............      3,000
    2,000   Franklin County, Ohio, Series 95, 3.20%,
              6/01/16.........................................      2,000
            Harris County, Texas,
    5,000     3.35%, 8/01/20, Series 94G......................      5,000
    5,000     3.35%, 8/01/20, Series 94H......................      5,000
    2,200   Huntsville, Alabama, Health Care Facilities
              Authority, Series B, 3.30%, 6/01/24.............      2,200
      300   Illinois Development Finance Authority, A.E.
              Staley Manufacturing, Series 85, 3.30%,
              12/01/05........................................        300
    4,000   Jefferson Parish, Louisiana, Hospital Service
              District No. 001 Revenue Bonds, West Jefferson
              Medical Center, 3.50%, 1/01/26..................      4,000
</TABLE>
 
The accompanying notes are an integral part of the financial statements. (Pages
                                    182-188)
 
- --------------------------------------------------------------------------------
                                                Municipal Money Market Portfolio
 
                                      139
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
STATEMENT OF NET ASSETS (UNAUDITED)
JUNE 30, 1996
- --------------------------------------------------------------------------------
 
THE MUNICIPAL MONEY MARKET PORTFOLIO (CONT.)
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>
   FACE                                                         AMORTIZED
  AMOUNT                                                           COST
  (000)                                                           (000)
- ------------------------------------------------------------
<C>         <S>                                                 <C>
</TABLE>
 
  VARIABLE/FLOATING RATE INSTRUMENTS (CONT.)
<TABLE>
<C>         <S>                                                 <C>
$   1,000   Lehigh County, Pennsylvania, Allegheny Electric
              Cooperative, 3.55%, 12/01/15....................  $   1,000
    1,500   Louisiana Public Facilities Authority, Hospital
              Revenue Bonds, Series 85, 3.10%, 12/01/00.......      1,500
    1,800   Missouri State Health & Educational Facilities
              Authority, Revenue Bonds, Washington University
              Project, 3.35%, 9/01/09.........................      1,800
    1,000   Massachusetts Health & Education Facilities
              Authority, Series G-1, 3.00%, 1/01/19...........      1,000
    3,900   Nueces County, Texas, Health Facilities, Driscoll
              Children's Foundation, 3.15%, 7/01/15...........      3,900
    1,500   Person County, North Carolina, Carolina Power &
              Light, 3.25%, 11/01/19..........................      1,500
            Pinellas County, Florida, Health Facilities,
              Bayfront Medical Center,
      235     3.35%, 6/01/98..................................        235
    1,000     3.35%, 6/01/09..................................      1,000
      400   Polk County, Iowa, Hospital Equipment &
              Improvement Authority, 3.10%, 12/01/05..........        400
      800   Port Development Corporation Marine Terminal,
              Texas, Series 89, 3.30%, 1/15/14................        800
    1,500   Port of Corpus Christi, Texas, Marine Terminal,
              R.J. Reynolds Metals Series, 3.55%, 9/01/14.....      1,500
      600   Putnam County, Florida, Development Authority,
              Seminole Electric, Series 84-H1, 3.15%,
              3/15/14.........................................        600
    1,000   Rapides Parish, Louisiana, Central Louisiana
              Electric Series, 3.25%, 7/01/18.................      1,000
      700   Sheboygan, Wisconsin, Wisconsin Power & Light
              Series, 3.55%, 8/01/14..........................        700
    4,500   Tennessee State, General Obligation Bonds, BANS,
              Series C, 3.40%, 7/02/01........................      4,500
    4,490   Texas State, Veterans Housing Assistance-Fund I,
              3.30%, 12/01/16.................................      4,490
    1,100   University of North Carolina, Chapel Hill Fund,
              Inc., Certificates of Participation, 3.05%,
              10/01/09........................................      1,100
            Washington State Public Power Supply Revenue
              Bonds,
    2,000     3.25%, 7/01/17, Series 93-1A3...................      2,000
    3,300     3.35%, 7/01/17, Series 1A-2.....................      3,300
                                                                ----------
                                                                  137,805
                                                                ----------
  TOTAL VARIABLE/FLOATING RATE INSTRUMENTS....................    456,760
                                                                ----------
TOTAL TAX-EXEMPT INSTRUMENTS (Cost $746,388)..................     746,388
                                                                ----------
TAXABLE INSTRUMENTS (3.9%)
  U.S. AGENCY OBLIGATIONS (3.9%)
            Federal Farm Credit Bank Discount Notes
   16,900   5.22%, 7/15/96....................................     16,866
    2,835   5.28%, 7/25/96....................................      2,626
<CAPTION>
   FACE                                                         AMORTIZED
  AMOUNT                                                           COST
  (000)                                                           (000)
- ------------------------------------------------------------
<C>         <S>                                                 <C>
$  11,065   Federal Home Loan Bank Discount Notes 5.31%,
              9/25/96.........................................  $  10,924
                                                                ----------
  TOTAL U.S. AGENCY OBLIGATIONS...............................     30,416
                                                                ----------
TOTAL TAXABLE INSTRUMENTS (Cost $30,416)......................      30,416
                                                                ----------
TOTAL INVESTMENTS (100.8%) (Cost $776,804)....................     776,804
                                                                ----------
</TABLE>
 
<TABLE>
<S>                                                 <C>         <C>
OTHER ASSETS (0.5%)
  Cash............................................  $      146
  Interest Receivable.............................       3,653
  Other...........................................          19       3,818
                                                    ----------
LIABILITIES (-1.3%)
  Payable for Investments Purchased...............      (9,054)
  Dividends Payable...............................        (836)
  Investment Advisory Fees Payable................        (474)
  Administrative Fees Payable.....................         (90)
  Custodian Fees Payable..........................         (16)
  Directors' Fees and Expenses Payable............          (9)
  Other Liabilities...............................         (78)    (10,557)
                                                    ----------  ----------
NET ASSETS (100%).............................................    $770,065
                                                                ----------
                                                                ----------
</TABLE>
 
<TABLE>
<S>                                                 <C>         <C>
NET ASSETS CONSIST OF:
Paid in Capital...............................................  $  770,076
Accumulated Net Realized Loss.................................         (11)
                                                                ----------
NET ASSETS....................................................    $770,065
                                                                ----------
                                                                ----------
NET ASSET VALUE, OFFERING AND REDEMPTION
  PRICE PER SHARE
  Applicable to 770,050,538 outstanding $0.001 par value
  shares (authorized 4,000,000,000 shares)....................       $1.00
                                                                ----------
                                                                ----------
</TABLE>
 
- ------------------------------------------------------------
 
<TABLE>
<S>        <C>
BANS       -- Bond Anticipation Notes
TANS       -- Tax Anticipation Notes
TRANS      -- Tax & Revenue Anticipation Notes
</TABLE>
 
Variable/Floating Rate Instruments. The interest rate changes on these
instruments are based on changes in a designated base rate. These instruments
are payable on demand and are secured by a letter of credit or other support
agreements.
 
Prerefunded Bonds. Outstanding bonds have been refunded to the first call date
(prerefunded date) by the issuance of new bonds. Principal and interest are paid
from monies escrowed in U.S. Treasury securities. Prerefunded bonds are
generally re-rated AAA due to the Treasury escrow.
 
Maturity dates disclosed for Variable/Floating Rate Instruments are the ultimate
maturity dates. The effective maturity dates for such securities are the next
interest reset dates which are seven days or less.
 
Interest rates disclosed for U.S. Government & Agency Obligations represent
effective yields at June 30, 1996.
 
At June 30, 1996, approximately 13% of the net assets were invested in Texas
municipal securities. Economic changes affecting the state and certain of its
public bodies and municipalities may affect the ability of issuers to pay the
required principal and interest payments of the municipal securities.
 
The accompanying notes are an integral part of the financial statements. (Pages
                                    182-188)
 
- --------------------------------------------------------------------------------
Municipal Money Market Portfolio
 
                                      140
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
 
STATEMENT OF OPERATIONS (UNAUDITED)
- --------------------------------------------------------------------------------
 
<TABLE>
<CAPTION>
                                                             ACTIVE
                                                            COUNTRY        ASIAN     EMERGING     EUROPEAN        GLOBAL
                                                         ALLOCATION       EQUITY      MARKETS       EQUITY        EQUITY
                                                          PORTFOLIO    PORTFOLIO    PORTFOLIO    PORTFOLIO     PORTFOLIO
                                                         SIX MONTHS   SIX MONTHS   SIX MONTHS   SIX MONTHS    SIX MONTHS
                                                         ENDED JUNE   ENDED JUNE   ENDED JUNE   ENDED JUNE    ENDED JUNE
                                                                30,          30,          30,          30,           30,
                                                               1996         1996         1996         1996          1996
                                                              (000)        (000)        (000)        (000)         (000)
- ------------------------------------------------------------------------------------------------------------------------
<S>                                                     <C>          <C>          <C>          <C>          <C>
INVESTMENT INCOME:
  Dividends                                               $   2,067    $   3,939    $  18,462    $   2,228     $   1,041
  Interest                                                      317          624        2,200          255            45
  Less: Foreign Taxes Withheld                                 (257)        (340)      (1,129)        (305)          (96)
                                                        -----------  -----------  -----------  -----------        ------
    Total Income                                              2,127        4,223       19,533        2,178           990
                                                        -----------  -----------  -----------  -----------        ------
EXPENSES:
  Investment Advisory Fees:
    Basic Fees -- Adviser                                       579        1,673        7,076          413           303
    Less: Fees Waived                                          (278)        (491)          --         (108)          (71)
                                                        -----------  -----------  -----------  -----------        ------
  Investment Advisory Fees -- Net                               301        1,182        7,076          305           232
  Administrative Fees                                           180          328          884           89            65
  Sub-Administrative Fees                                         3           --           93           --            --
  Custodian Fees                                                122          416        1,441           45            18
  Filing and Registration Fees                                   32           87          137           45            23
  Insurance                                                       4            8           28            2             2
  Directors' Fees and Expenses                                    4            9           47            2             2
  Professional Fees                                              27           37           78           21            25
  Shareholder Reports                                            35           18           67            6             6
  Foreign Tax Expense                                            --            1           24           --            --
  Distribution Fees on Class B Shares                             1           11           11            1             2
  Other Expenses                                                 14           17          135            3             4
                                                        -----------  -----------  -----------  -----------        ------
    Total Expenses                                              723        2,114       10,021          519           379
                                                        -----------  -----------  -----------  -----------        ------
NET INVESTMENT INCOME                                         1,404        2,109        9,512        1,659           611
                                                        -----------  -----------  -----------  -----------        ------
NET REALIZED GAIN (LOSS):
  Investments Sold                                            6,246       11,041       27,844*        (285)        3,624
  Foreign Currency Transactions                              11,507         (185)        (996)          81           (73)
                                                        -----------  -----------  -----------  -----------        ------
    Total Net Realized Gain (Loss)                           17,753       10,856       26,848         (204)        3,551
                                                        -----------  -----------  -----------  -----------        ------
CHANGE IN UNREALIZED APPRECIATION (DEPRECIATION):
  Investments                                                   172        4,544      167,720        9,938         5,037
  Foreign Currency Translations                              (5,406)        (140)      (3,919)          75           347
                                                        -----------  -----------  -----------  -----------        ------
    Total Net Change in Unrealized Appreciation
     (Depreciation)                                          (5,234)       4,404      163,801       10,013         5,384
                                                        -----------  -----------  -----------  -----------        ------
TOTAL NET REALIZED GAIN (LOSS) AND CHANGE IN
  UNREALIZED APPRECIATION (DEPRECIATION)                     12,519       15,260      190,649        9,809         8,935
                                                        -----------  -----------  -----------  -----------        ------
  Net Increase in Net Assets Resulting from Operations    $  13,923    $  17,369    $ 200,161    $  11,468     $   9,546
                                                        -----------  -----------  -----------  -----------        ------
                                                        -----------  -----------  -----------  -----------        ------
</TABLE>
 
- ---------------
*Net of foreign tax of $35,000 on net realized gains.
 
    The accompanying notes are an integral part of the financial statements.
 
- --------------------------------------------------------------------------------
 
                                      141
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
 
STATEMENT OF OPERATIONS (UNAUDITED)
- --------------------------------------------------------------------------------
 
<TABLE>
<CAPTION>
                                                                                                                 JAPANESE
                                                       GOLD  INTERNATIONAL    INTERNATIONAL   INTERNATIONAL        EQUITY
                                                  PORTFOLIO         EQUITY           MAGNUM       SMALL CAP     PORTFOLIO
                                                 SIX MONTHS  PORTFOLIO SIX  PORTFOLIO MARCH   PORTFOLIO SIX    SIX MONTHS
                                                 ENDED JUNE   MONTHS ENDED     15, 1996* TO    MONTHS ENDED    ENDED JUNE
                                                   30, 1996  JUNE 30, 1996    JUNE 30, 1996   JUNE 30, 1996      30, 1996
                                                      (000)          (000)            (000)           (000)         (000)
- -------------------------------------------------------------------------------------------------------------------------
<S>                                            <C>           <C>            <C>              <C>             <C>
INVESTMENT INCOME:
  Dividends                                       $      60      $  32,636        $     190       $   2,891     $     754
  Interest                                              101          2,815               59             183           421
  Less: Foreign Taxes Withheld                           (1)        (4,152)             (25)           (357)         (113)
                                               ------------  -------------           ------         -------  ------------
    Total Income                                        160         31,299              224           2,717         1,062
                                               ------------  -------------           ------         -------  ------------
EXPENSES:
  Investment Advisory Fees:
    Basic Fees -- Adviser                                64          7,409               56           1,010           745
    Basic Fees -- Sub Adviser                            42             --               --              --            --
    Less: Fees Waived -- Adviser                        (38)          (340)             (56)            (97)          (86)
         Fees Waived -- Sub Adviser                     (25)            --               --              --            --
                                               ------------  -------------           ------         -------  ------------
  Investment Advisory Fees -- Net                        43          7,069               --             913           659
  Administrative Fees                                    20          1,443               13             172           151
  Sub-Administrative Fees                                --             --               --              --            --
  Custodian Fees                                         13            303               34              64            25
  Filing and Registration Fees                           26            174               27              15            57
  Insurance                                              --             42               --               5             1
  Directors' Fees and Expenses                            1             38               --               6             4
  Professional Fees                                      18             92                8              33            22
  Shareholder Reports                                    10             73               12              11             9
  Distribution Fees on Class B Shares                    --              3                1              --             4
  Other Expenses                                          2             17                2               4             6
  Expenses Reimbursed by Adviser                         --             --              (24)             --            --
                                               ------------  -------------           ------         -------  ------------
    Total Expenses                                      133          9,254               73           1,223           938
                                               ------------  -------------           ------         -------  ------------
NET INVESTMENT INCOME                                    27         22,045              151           1,494           124
                                               ------------  -------------           ------         -------  ------------
NET REALIZED GAIN (LOSS):
  Investments Sold                                    1,105         51,067               (4)          1,733           714
  Foreign Currency Transactions                           9         (3,391)             (11)           (610)        6,272
                                               ------------  -------------           ------         -------  ------------
    Total Net Realized Gain (Loss)                    1,114         47,676              (15)          1,123         6,986
                                               ------------  -------------           ------         -------  ------------
CHANGE IN UNREALIZED APPRECIATION
  (DEPRECIATION):
  Investments                                        (1,639)       110,114              959          26,712         3,682
  Foreign Currency Translations                          (1)        18,827              241           1,243         3,440
                                               ------------  -------------           ------         -------  ------------
    Total Net Change in Unrealized
     Appreciation (Depreciation)                     (1,640)       128,941            1,200          27,955         7,122
                                               ------------  -------------           ------         -------  ------------
TOTAL NET REALIZED GAIN (LOSS) AND CHANGE IN
  UNREALIZED APPRECIATION (DEPRECIATION)               (526)       176,617            1,185          29,078        14,108
                                               ------------  -------------           ------         -------  ------------
  Net Increase (Decrease) in Net Assets
    Resulting from Operations                     $    (499)     $ 198,662        $   1,336       $  30,572     $  14,232
                                               ------------  -------------           ------         -------  ------------
                                               ------------  -------------           ------         -------  ------------
 
<CAPTION>
 
                                                       LATIN
                                                    AMERICAN
                                               PORTFOLIO SIX
                                                MONTHS ENDED
                                               JUNE 30, 1996
                                                       (000)
- --------------------------------------------------------------------------
<S>                                            <C>
INVESTMENT INCOME:
  Dividends                                        $     404
  Interest                                                83
  Less: Foreign Taxes Withheld                           (16)
                                                      ------
    Total Income                                         471
                                                      ------
EXPENSES:
  Investment Advisory Fees:
    Basic Fees -- Adviser                                122
    Basic Fees -- Sub Adviser                             --
    Less: Fees Waived -- Adviser                         (49)
         Fees Waived -- Sub Adviser                       --
                                                      ------
  Investment Advisory Fees -- Net                         73
  Administrative Fees                                     22
  Sub-Administrative Fees                                  2
  Custodian Fees                                          36
  Filing and Registration Fees                            26
  Insurance                                               --
  Directors' Fees and Expenses                             1
  Professional Fees                                       24
  Shareholder Reports                                      2
  Distribution Fees on Class B Shares                      1
  Other Expenses                                           3
  Expenses Reimbursed by Adviser                          --
                                                      ------
    Total Expenses                                       190
                                                      ------
NET INVESTMENT INCOME                                    281
                                                      ------
NET REALIZED GAIN (LOSS):
  Investments Sold                                     1,886
  Foreign Currency Transactions                          (11)
                                                      ------
    Total Net Realized Gain (Loss)                     1,875
                                                      ------
CHANGE IN UNREALIZED APPRECIATION
  (DEPRECIATION):
  Investments                                          4,045
  Foreign Currency Translations                           (1)
                                                      ------
    Total Net Change in Unrealized
     Appreciation (Depreciation)                       4,044
                                                      ------
TOTAL NET REALIZED GAIN (LOSS) AND CHANGE IN
  UNREALIZED APPRECIATION (DEPRECIATION)               5,919
                                                      ------
  Net Increase (Decrease) in Net Assets
    Resulting from Operations                      $   6,200
                                                      ------
                                                      ------
</TABLE>
 
- ---------------
*Commencement of operations.
 
    The accompanying notes are an integral part of the financial statements.
 
- --------------------------------------------------------------------------------
 
                                      142
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
 
STATEMENT OF OPERATIONS (UNAUDITED)
- --------------------------------------------------------------------------------
 
<TABLE>
<CAPTION>
                                                                            SMALL CAP
                                 AGGRESSIVE      EMERGING        EQUITY         VALUE     U.S. REAL         VALUE
                                     EQUITY        GROWTH        GROWTH        EQUITY        ESTATE        EQUITY      BALANCED
                                  PORTFOLIO     PORTFOLIO     PORTFOLIO     PORTFOLIO     PORTFOLIO     PORTFOLIO     PORTFOLIO
                                 SIX MONTHS    SIX MONTHS    SIX MONTHS    SIX MONTHS    SIX MONTHS    SIX MONTHS    SIX MONTHS
                                 ENDED JUNE    ENDED JUNE    ENDED JUNE    ENDED JUNE    ENDED JUNE    ENDED JUNE    ENDED JUNE
                                   30, 1996      30, 1996      30, 1996      30, 1996      30, 1996      30, 1996      30, 1996
                                      (000)         (000)         (000)         (000)         (000)         (000)         (000)
- ------------------------------------------------------------------------------------------------------------------------------
<S>                             <C>           <C>           <C>           <C>           <C>           <C>           <C>
INVESTMENT INCOME:
  Dividends                     $       430   $        65   $     1,504   $       815   $     1,877   $     2,375   $       165
  Interest                               87           117           338            54           203           127           288
                                -----------   -----------   -----------   -----------   -----------   -----------         -----
    Total Income                        517           182         1,842           869         2,080         2,502           453
                                -----------   -----------   -----------   -----------   -----------   -----------         -----
EXPENSES:
  Investment Advisory Fees:
    Basic Fees -- Adviser               158           561           519           223           397           375            50
    Less: Fees Waived                   (52)          (29)          (91)          (59)          (92)          (51)          (50)
                                -----------   -----------   -----------   -----------   -----------   -----------         -----
  Investment Advisory
    Fees -- Net                         106           532           428           164           305           324            --
  Administrative Fees                    33            90           138            45            79           120            20
  Custodian Fees                         11            14            34            10            30            13            10
  Filing and Registration Fees           22            19            40            17            37            30            22
  Insurance                               1             4             4             1             2             4             1
  Directors' Fees and Expenses            1             4             4             2             2             4             1
  Professional Fees                      15            16            19            14            15            16            12
  Shareholder Reports                     6            17            20             6            23            10             4
  Distribution Fees on Class B
    Shares                                4             4             4             1             3             1             2
  Other Expenses                          7             4             4             3             3             4             3
  Expenses Reimbursed by
   Adviser                               --            --            --            --            --            --            (3)
                                -----------   -----------   -----------   -----------   -----------   -----------         -----
    Total Expenses                      206           704           695           263           499           526            72
                                -----------   -----------   -----------   -----------   -----------   -----------         -----
NET INVESTMENT INCOME (LOSS)            311          (522)        1,147           606         1,581         1,976           381
                                -----------   -----------   -----------   -----------   -----------   -----------         -----
NET REALIZED GAIN:
  Investments Sold                    6,695        20,685        21,397         2,943         6,539         7,167           979
  Securities Sold Short                  81            --            --            --            --            --            --
                                -----------   -----------   -----------   -----------   -----------   -----------         -----
    Total Net Realized Gain           6,776        20,685        21,397         2,943         6,539         7,167           979
                                -----------   -----------   -----------   -----------   -----------   -----------         -----
CHANGE IN UNREALIZED
  APPRECIATION (DEPRECIATION)           697       (12,546)        3,533         1,396         2,394         3,057          (539)
                                -----------   -----------   -----------   -----------   -----------   -----------         -----
TOTAL NET REALIZED GAIN AND
  CHANGE IN UNREALIZED
  APPRECIATION (DEPRECIATION)         7,473         8,139        24,930         4,339         8,933        10,224           440
                                -----------   -----------   -----------   -----------   -----------   -----------         -----
  Net Increase in Net Assets
    Resulting from Operations   $     7,784   $     7,617   $    26,077   $     4,945   $    10,514   $    12,200   $       821
                                -----------   -----------   -----------   -----------   -----------   -----------         -----
                                -----------   -----------   -----------   -----------   -----------   -----------         -----
</TABLE>
 
    The accompanying notes are an integral part of the financial statements.
 
- --------------------------------------------------------------------------------
 
                                      143
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
 
STATEMENT OF OPERATIONS (UNAUDITED)
- --------------------------------------------------------------------------------
 
<TABLE>
<CAPTION>
                                    EMERGING
                                     MARKETS
                                        DEBT                  GLOBAL FIXED                     MUNICIPAL
                                   PORTFOLIO   FIXED INCOME         INCOME     HIGH YIELD    BOND INCOME   MONEY MARKET
                                  SIX MONTHS  PORTFOLIO SIX  PORTFOLIO SIX  PORTFOLIO SIX  PORTFOLIO SIX  PORTFOLIO SIX
                                       ENDED   MONTHS ENDED   MONTHS ENDED   MONTHS ENDED   MONTHS ENDED   MONTHS ENDED
                                    JUNE 30,       JUNE 30,       JUNE 30,       JUNE 30,       JUNE 30,       JUNE 30,
                                        1996           1996           1996           1996           1996           1996
                                       (000)          (000)          (000)          (000)          (000)          (000)
- -----------------------------------------------------------------------------------------------------------------------
<S>                            <C>            <C>            <C>            <C>            <C>            <C>
INVESTMENT INCOME:
  Dividends                        $      --      $      --      $      --      $       3      $      --      $      --
  Interest                            14,292          5,501          3,304          3,979          1,075         28,137
  Less: Foreign Taxes
    Withheld                              --             --            (40)            --             --             --
                               -------------  -------------  -------------  -------------  -------------  -------------
    Total Income                      14,292          5,501          3,264          3,982          1,075         28,137
                               -------------  -------------  -------------  -------------  -------------  -------------
EXPENSES:
  Investment Advisory Fees:
    Basic Fees -- Adviser                903            286            208            193             72          1,561
    Less: Fees Waived                     --           (136)          (127)           (38)           (60)            --
                               -------------  -------------  -------------  -------------  -------------  -------------
  Investment Advisory
    Fees -- Net                          903            150             81            155             12          1,561
  Administrative Fees                    145            134             84             64             36            804
  Custodian Fees                         119             14             27              8              3             54
  Filing and Registration
    Fees                                  30             28             31             29             17            112
  Insurance                                5              5              3              2              1             25
  Interest Expense                     1,090             --             --             --             --             --
  Directors' Fees and
    Expenses                              27              4              3              2              2             20
  Professional Fees                       33             15             20             17             15             32
  Shareholder Reports                     14             10              7              6              3             17
  Distribution Fees on Class
    B Shares                               2              1              2              2             --             --
  Other Expenses                         193              7              6              6              3             13
                               -------------  -------------  -------------  -------------  -------------  -------------
    Total Expenses                     2,561            368            264            291             92          2,638
                               -------------  -------------  -------------  -------------  -------------  -------------
NET INVESTMENT INCOME                 11,731          5,133          3,000          3,691            983         25,499
                               -------------  -------------  -------------  -------------  -------------  -------------
NET REALIZED GAIN (LOSS):
  Investments Sold                    21,337          1,276          1,030          1,095           (100)          (474)
  Foreign Currency
   Transactions                       (2,108)           442            731             --             --             --
  Securities Sold Short               (1,595)            --             --             --             --             --
  Written Options                       (567)            --             --             --             --             --
                               -------------  -------------  -------------  -------------  -------------  -------------
    Total Net Realized Gain
     (Loss)                           17,067          1,718          1,761          1,095           (100)          (474)
                               -------------  -------------  -------------  -------------  -------------  -------------
CHANGE IN UNREALIZED
  APPRECIATION
  (DEPRECIATION):
  Investments                          2,333         (8,269)        (3,908)        (1,570)        (1,066)            --
  Foreign Currency
   Translations                          (78)          (249)          (423)            --             --             --
  Securities Sold Short                  545             --             --             --             --             --
                               -------------  -------------  -------------  -------------  -------------  -------------
    Total Net Change in
     Unrealized Appreciation
     (Depreciation)                    2,800         (8,518)        (4,331)        (1,570)        (1,066)            --
                               -------------  -------------  -------------  -------------  -------------  -------------
TOTAL NET REALIZED GAIN
  (LOSS) AND CHANGE IN
  UNREALIZED APPRECIATION
  (DEPRECIATION)                      19,867         (6,800)        (2,570)          (475)        (1,166)          (474)
                               -------------  -------------  -------------  -------------  -------------  -------------
  Net Increase (Decrease) in
   Net Assets Resulting from
   Operations                      $  31,598      $  (1,667)     $     430      $   3,216      $    (183)     $  25,025
                               -------------  -------------  -------------  -------------  -------------  -------------
                               -------------  -------------  -------------  -------------  -------------  -------------
 
<CAPTION>
 
                                    MUNICIPAL
                                 MONEY MARKET
                                PORTFOLIO SIX
                                 MONTHS ENDED
                                     JUNE 30,
                                         1996
                                        (000)
- ----------------------------------------------------------------------------------------
<S>                            <C>
INVESTMENT INCOME:
  Dividends                         $      --
  Interest                              9,964
  Less: Foreign Taxes
    Withheld                               --
                                       ------
    Total Income                        9,964
                                       ------
EXPENSES:
  Investment Advisory Fees:
    Basic Fees -- Adviser                 833
    Less: Fees Waived                      --
                                       ------
  Investment Advisory
    Fees -- Net                           833
  Administrative Fees                     441
  Custodian Fees                           34
  Filing and Registration
    Fees                                   77
  Insurance                                14
  Interest Expense                         --
  Directors' Fees and
    Expenses                               10
  Professional Fees                        22
  Shareholder Reports                      16
  Distribution Fees on Class
    B Shares                               --
  Other Expenses                            8
                                       ------
    Total Expenses                      1,455
                                       ------
NET INVESTMENT INCOME                   8,509
                                       ------
NET REALIZED GAIN (LOSS):
  Investments Sold                         (2)
  Foreign Currency
   Transactions                            --
  Securities Sold Short                    --
  Written Options                          --
                                       ------
    Total Net Realized Gain
     (Loss)                                (2)
                                       ------
CHANGE IN UNREALIZED
  APPRECIATION
  (DEPRECIATION):
  Investments                              --
  Foreign Currency
   Translations                            --
  Securities Sold Short                    --
                                       ------
    Total Net Change in
     Unrealized Appreciation
     (Depreciation)                        --
                                       ------
TOTAL NET REALIZED GAIN
  (LOSS) AND CHANGE IN
  UNREALIZED APPRECIATION
  (DEPRECIATION)                           (2)
                                       ------
  Net Increase (Decrease) in
   Net Assets Resulting from
   Operations                       $   8,507
                                       ------
                                       ------
</TABLE>
 
    The accompanying notes are an integral part of the financial statements.
 
- --------------------------------------------------------------------------------
 
                                      144
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
 
STATEMENT OF CHANGES IN NET ASSETS
- --------------------------------------------------------------------------------
 
<TABLE>
<CAPTION>
                                                                       ACTIVE
                                                                       COUNTRY ALLOCATION
                                                                       PORTFOLIO
- --------------------------------------------------------------------------------------------------
                                                               SIX MONTHS ENDED
                                                                  JUNE 30, 1996         YEAR ENDED
                                                                    (UNAUDITED)  DECEMBER 31, 1995
                                                                          (000)              (000)
- --------------------------------------------------------------------------------------------------
<S>                                                           <C>                <C>
INCREASE (DECREASE) IN NET ASSETS
OPERATIONS:
  Net Investment Income                                       $           1,404  $           2,074
  Net Realized Gain (Loss)                                               17,753             (1,123)
  Change in Unrealized Appreciation (Depreciation)                       (5,234)            15,675
- --------------------------------------------------------------------------------------------------
  Net Increase in Net Assets Resulting from Operations                   13,923             16,626
- --------------------------------------------------------------------------------------------------
DISTRIBUTIONS:
  CLASS A:
  Net Investment Income                                                      --             (3,492)
  In Excess of Net Investment Income                                         --             (1,308)
  Net Realized Gain                                                          --            (12,502)
- --------------------------------------------------------------------------------------------------
  Total Distributions                                                        --            (17,302)
- --------------------------------------------------------------------------------------------------
CAPITAL SHARE TRANSACTIONS: (1)
  CLASS A:
  Subscribed                                                             39,413             88,081
  Distributions Reinvested                                                   --             15,283
  Redeemed                                                              (48,271)          (115,002)
  CLASS B+:
  Subscribed                                                                862                 --
  Redeemed                                                                 (192)                --
- --------------------------------------------------------------------------------------------------
  Net Increase (Decrease) in Capital Share Transactions                  (8,188)           (11,638)
- --------------------------------------------------------------------------------------------------
  Total Increase (Decrease) in Net Assets                                 5,735            (12,314)
NET ASSETS:
  Beginning of Period                                                   170,663            182,977
- --------------------------------------------------------------------------------------------------
  End of Period                                               $         176,398  $         170,663
- --------------------------------------------------------------------------------------------------
  End of period net assets consisted of accumulated
   undistributed (overdistributed) net investment income      $          (6,378) $          (7,782)
- --------------------------------------------------------------------------------------------------
 
 (1) CAPITAL SHARE TRANSACTIONS:
   CLASS A:
   Shares Subscribed                                                      3,258              7,883
   Shares Issued on Distributions Reinvested                                 --              1,346
   Shares Redeemed                                                       (3,969)           (10,268)
- --------------------------------------------------------------------------------------------------
   Net Increase (Decrease) in Class A Shares Outstanding                   (711)            (1,039)
- --------------------------------------------------------------------------------------------------
   CLASS B+:
   Shares Subscribed                                                         73                 --
   Shares Redeemed                                                          (16)                --
- --------------------------------------------------------------------------------------------------
   Net Increase in Class B Shares Outstanding                                57                 --
- --------------------------------------------------------------------------------------------------
 
<CAPTION>
                                                                      ASIAN
                                                                      EQUITY
                                                                      PORTFOLIO
- --------------------------------------------------------------------------------------------------
                                                               SIX MONTHS ENDED
                                                                  JUNE 30, 1996         YEAR ENDED
                                                                    (UNAUDITED)  DECEMBER 31, 1995
                                                                          (000)              (000)
- --------------------------------------------------------------------------------------------------
<S>                                                           <C>                <C>
INCREASE (DECREASE) IN NET ASSETS
OPERATIONS:
  Net Investment Income                                       $           2,109  $           2,796
  Net Realized Gain (Loss)                                               10,856             12,459
  Change in Unrealized Appreciation (Depreciation)                        4,404              7,852
- --------------------------------------------------------------------------------------------------
  Net Increase in Net Assets Resulting from Operations                   17,369             23,107
- --------------------------------------------------------------------------------------------------
DISTRIBUTIONS:
  CLASS A:
  Net Investment Income                                                      --             (4,866)
  In Excess of Net Investment Income                                         --                 (3)
  Net Realized Gain                                                          --            (40,469)
- --------------------------------------------------------------------------------------------------
  Total Distributions                                                        --            (45,338)
- --------------------------------------------------------------------------------------------------
CAPITAL SHARE TRANSACTIONS: (1)
  CLASS A:
  Subscribed                                                            204,101            472,587
  Distributions Reinvested                                                   --             41,003
  Redeemed                                                             (107,354)          (453,381)
  CLASS B+:
  Subscribed                                                             16,888                 --
  Redeemed                                                               (3,494)                --
- --------------------------------------------------------------------------------------------------
  Net Increase (Decrease) in Capital Share Transactions                 110,141             60,209
- --------------------------------------------------------------------------------------------------
  Total Increase (Decrease) in Net Assets                               127,510             37,978
NET ASSETS:
  Beginning of Period                                                   314,884            276,906
- --------------------------------------------------------------------------------------------------
  End of Period                                               $         442,394  $         314,884
- --------------------------------------------------------------------------------------------------
  End of period net assets consisted of accumulated
   undistributed (overdistributed) net investment income      $           2,106  $              (3)
- --------------------------------------------------------------------------------------------------
 (1) CAPITAL SHARE TRANSACTIONS:
   CLASS A:
   Shares Subscribed                                                      9,844             24,613
   Shares Issued on Distributions Reinvested                                 --              2,138
   Shares Redeemed                                                       (5,193)           (23,439)
- --------------------------------------------------------------------------------------------------
   Net Increase (Decrease) in Class A Shares Outstanding                  4,651              3,312
- --------------------------------------------------------------------------------------------------
   CLASS B+:
   Shares Subscribed                                                        823                 --
   Shares Redeemed                                                         (169)                --
- --------------------------------------------------------------------------------------------------
   Net Increase in Class B Shares Outstanding                               654                 --
- --------------------------------------------------------------------------------------------------
</TABLE>
 
  + Each Portfolio began offering Class B shares on January 2, 1996.
 
    The accompanying notes are an integral part of the financial statements.
- --------------------------------------------------------------------------------
 
                                      145
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
 
STATEMENT OF CHANGES IN NET ASSETS
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>
                                                                     EMERGING
                                                                     MARKETS
                                                                     PORTFOLIO
- --------------------------------------------------------------------------------------------------
                                                               SIX MONTHS ENDED
                                                                  JUNE 30, 1996         YEAR ENDED
                                                                    (UNAUDITED)  DECEMBER 31, 1995
                                                                          (000)              (000)
- --------------------------------------------------------------------------------------------------
<S>                                                           <C>                <C>
INCREASE (DECREASE) IN NET ASSETS
OPERATIONS:
  Net Investment Income                                       $           9,512  $           5,513
  Net Realized Gain (Loss)                                               26,848            (34,234)
  Change in Unrealized Appreciation (Depreciation)                      163,801            (97,017)
- --------------------------------------------------------------------------------------------------
  Net Increase (Decrease) in Net Assets Resulting from
   Operations                                                           200,161           (125,738)
- --------------------------------------------------------------------------------------------------
DISTRIBUTIONS:
  CLASS A:
  Net Investment Income                                                      --             (3,978)
  Net Realized Gain                                                          --            (66,711)
- --------------------------------------------------------------------------------------------------
  Total Distributions                                                        --            (70,689)
- --------------------------------------------------------------------------------------------------
CAPITAL SHARE TRANSACTIONS: (1)
  CLASS A:
  Subscribed                                                            339,297            379,789
  Distributions Reinvested                                                   --             67,401
  Redeemed                                                              (77,366)          (303,810)
  CLASS B+:
  Subscribed                                                             14,043                 --
  Redeemed                                                                 (610)                --
- --------------------------------------------------------------------------------------------------
  Net Increase in Capital Share Transactions                            275,364            143,380
- --------------------------------------------------------------------------------------------------
  Total Increase (Decrease) in Net Assets                               475,525            (53,047)
NET ASSETS:
  Beginning of Period                                                   876,591            929,638
- --------------------------------------------------------------------------------------------------
  End of Period                                               $       1,352,116  $         876,591
- --------------------------------------------------------------------------------------------------
  End of period net assets consisted of accumulated
   undistributed net investment income                        $           9,679  $             167
- --------------------------------------------------------------------------------------------------
 
 (1) CAPITAL SHARE TRANSACTIONS:
   CLASS A:
   Shares Subscribed                                                     23,234             27,709
   Shares Issued on Distributions Reinvested                                 --              4,586
   Shares Redeemed                                                       (5,352)           (22,595)
- --------------------------------------------------------------------------------------------------
   Net Increase in Class A Shares Outstanding                            17,882              9,700
- --------------------------------------------------------------------------------------------------
   CLASS B+:
   Shares Subscribed                                                        978                 --
   Shares Redeemed                                                          (41)                --
- --------------------------------------------------------------------------------------------------
   Net Increase in Class B Shares Outstanding                               937                 --
- --------------------------------------------------------------------------------------------------
 
<CAPTION>
                                                                       EUROPEAN
                                                                       EQUITY
                                                                       PORTFOLIO
- --------------------------------------------------------------------------------------------------
                                                               SIX MONTHS ENDED
                                                                  JUNE 30, 1996         YEAR ENDED
                                                                    (UNAUDITED)  DECEMBER 31, 1995
                                                                          (000)              (000)
- --------------------------------------------------------------------------------------------------
<S>                                                           <C>                <C>
INCREASE (DECREASE) IN NET ASSETS
OPERATIONS:
  Net Investment Income                                       $           1,659  $             714
  Net Realized Gain (Loss)                                                 (204)               643
  Change in Unrealized Appreciation (Depreciation)                       10,013              3,042
- --------------------------------------------------------------------------------------------------
  Net Increase (Decrease) in Net Assets Resulting from
   Operations                                                            11,468              4,399
- --------------------------------------------------------------------------------------------------
DISTRIBUTIONS:
  CLASS A:
  Net Investment Income                                                      --               (738)
  Net Realized Gain                                                          --             (3,017)
- --------------------------------------------------------------------------------------------------
  Total Distributions                                                        --             (3,755)
- --------------------------------------------------------------------------------------------------
CAPITAL SHARE TRANSACTIONS: (1)
  CLASS A:
  Subscribed                                                             69,844             56,209
  Distributions Reinvested                                                   --              3,468
  Redeemed                                                              (10,995)           (18,372)
  CLASS B+:
  Subscribed                                                              2,579                 --
  Redeemed                                                                 (634)                --
- --------------------------------------------------------------------------------------------------
  Net Increase in Capital Share Transactions                             60,794             41,305
- --------------------------------------------------------------------------------------------------
  Total Increase (Decrease) in Net Assets                                72,262             41,949
NET ASSETS:
  Beginning of Period                                                    69,583             27,634
- --------------------------------------------------------------------------------------------------
  End of Period                                               $         141,845  $          69,583
- --------------------------------------------------------------------------------------------------
  End of period net assets consisted of accumulated
   undistributed net investment income                        $           1,683  $              24
- --------------------------------------------------------------------------------------------------
 (1) CAPITAL SHARE TRANSACTIONS:
   CLASS A:
   Shares Subscribed                                                      4,724              4,104
   Shares Issued on Distributions Reinvested                                 --                264
   Shares Redeemed                                                         (748)            (1,350)
- --------------------------------------------------------------------------------------------------
   Net Increase in Class A Shares Outstanding                             3,976              3,018
- --------------------------------------------------------------------------------------------------
   CLASS B+:
   Shares Subscribed                                                        175                 --
   Shares Redeemed                                                          (43)                --
- --------------------------------------------------------------------------------------------------
   Net Increase in Class B Shares Outstanding                               132                 --
- --------------------------------------------------------------------------------------------------
</TABLE>
 
  + Each Portfolio began offering Class B shares on January 2, 1996.
 
    The accompanying notes are an integral part of the financial statements.
- --------------------------------------------------------------------------------
 
                                      146
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
 
STATEMENT OF CHANGES IN NET ASSETS
- --------------------------------------------------------------------------------
 
<TABLE>
<CAPTION>
                                                                       GLOBAL
                                                                       EQUITY
                                                                       PORTFOLIO
- --------------------------------------------------------------------------------------------------
                                                               SIX MONTHS ENDED
                                                                  JUNE 30, 1996         YEAR ENDED
                                                                    (UNAUDITED)  DECEMBER 31, 1995
                                                                          (000)              (000)
- --------------------------------------------------------------------------------------------------
<S>                                                           <C>                <C>
INCREASE (DECREASE) IN NET ASSETS
OPERATIONS:
  Net Investment Income (Loss)                                $             611  $             960
  Net Realized Gain                                                       3,551              5,807
  Change in Unrealized Appreciation (Depreciation)                        5,384              7,195
- --------------------------------------------------------------------------------------------------
  Net Increase (Decrease) in Net Assets Resulting from
   Operations                                                             9,546             13,962
- --------------------------------------------------------------------------------------------------
DISTRIBUTIONS:
  CLASS A:
  Net Investment Income                                                      --             (1,202)
  Net Realized Gain                                                          --             (7,032)
- --------------------------------------------------------------------------------------------------
  Total Distributions                                                        --             (8,234)
- --------------------------------------------------------------------------------------------------
CAPITAL SHARE TRANSACTIONS: (1)
  CLASS A:
  Subscribed                                                              6,091             30,429
  Distributions Reinvested                                                   --              8,198
  Redeemed                                                              (28,192)           (31,615)
  CLASS B+:
  Subscribed                                                              1,929                 --
  Redeemed                                                                 (181)                --
- --------------------------------------------------------------------------------------------------
  Net Increase (Decrease) in Capital Share Transactions                 (20,353)             7,012
- --------------------------------------------------------------------------------------------------
  Total Increase (Decrease) in Net Assets                               (10,807)            12,740
NET ASSETS:
  Beginning of Period                                                    91,675             78,935
- --------------------------------------------------------------------------------------------------
  End of Period                                               $          80,868  $          91,675
- --------------------------------------------------------------------------------------------------
  End of period net assets consisted of accumulated
   undistributed net investment income                        $             611  $              --
- --------------------------------------------------------------------------------------------------
 
 (1) CAPITAL SHARE TRANSACTIONS:
   CLASS A:
   Shares Subscribed                                                        394              2,175
   Shares Issued on Distributions Reinvested                                 --                583
   Shares Redeemed                                                       (1,938)            (2,239)
- --------------------------------------------------------------------------------------------------
   Net Increase (Decrease) in Class A Shares
     Outstanding                                                         (1,544)               519
- --------------------------------------------------------------------------------------------------
   CLASS B+:
   Shares Subscribed                                                        130                 --
   Shares Redeemed                                                          (12)                --
- --------------------------------------------------------------------------------------------------
   Net Increase in Class B Shares Outstanding                               118                 --
- --------------------------------------------------------------------------------------------------
 
<CAPTION>
 
                                                                        GOLD
                                                                        PORTFOLIO
- --------------------------------------------------------------------------------------------------
                                                               SIX MONTHS ENDED
                                                                  JUNE 30, 1996         YEAR ENDED
                                                                    (UNAUDITED)  DECEMBER 31, 1995
                                                                          (000)              (000)
- --------------------------------------------------------------------------------------------------
<S>                                                           <C>                <C>
INCREASE (DECREASE) IN NET ASSETS
OPERATIONS:
  Net Investment Income (Loss)                                $              27  $             (57)
  Net Realized Gain                                                       1,114                876
  Change in Unrealized Appreciation (Depreciation)                       (1,640)             2,423
- --------------------------------------------------------------------------------------------------
  Net Increase (Decrease) in Net Assets Resulting from
   Operations                                                              (499)             3,242
- --------------------------------------------------------------------------------------------------
DISTRIBUTIONS:
  CLASS A:
  Net Investment Income                                                      --                (37)
  Net Realized Gain                                                          --             (2,066)
- --------------------------------------------------------------------------------------------------
  Total Distributions                                                        --             (2,103)
- --------------------------------------------------------------------------------------------------
CAPITAL SHARE TRANSACTIONS: (1)
  CLASS A:
  Subscribed                                                             37,853             21,820
  Distributions Reinvested                                                   --              1,913
  Redeemed                                                               (9,173)           (47,706)
  CLASS B+:
  Subscribed                                                              1,231                 --
  Redeemed                                                                 (106)                --
- --------------------------------------------------------------------------------------------------
  Net Increase (Decrease) in Capital Share Transactions                  29,805            (23,973)
- --------------------------------------------------------------------------------------------------
  Total Increase (Decrease) in Net Assets                                29,306            (22,834)
NET ASSETS:
  Beginning of Period                                                     7,409             30,243
- --------------------------------------------------------------------------------------------------
  End of Period                                               $          36,715  $           7,409
- --------------------------------------------------------------------------------------------------
  End of period net assets consisted of accumulated
   undistributed net investment income                        $              27  $              --
- --------------------------------------------------------------------------------------------------
 (1) CAPITAL SHARE TRANSACTIONS:
   CLASS A:
   Shares Subscribed                                                      3,161              2,403
   Shares Issued on Distributions Reinvested                                 --                222
   Shares Redeemed                                                         (769)            (5,071)
- --------------------------------------------------------------------------------------------------
   Net Increase (Decrease) in Class A Shares
     Outstanding                                                          2,392             (2,446)
- --------------------------------------------------------------------------------------------------
   CLASS B+:
   Shares Subscribed                                                        103                 --
   Shares Redeemed                                                           (9)                --
- --------------------------------------------------------------------------------------------------
   Net Increase in Class B Shares Outstanding                                94                 --
- --------------------------------------------------------------------------------------------------
</TABLE>
 
  + Each Portfolio began offering Class B shares on January 2, 1996.
 
    The accompanying notes are an integral part of the financial statements.
- --------------------------------------------------------------------------------
 
                                      147
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
 
STATEMENT OF CHANGES IN NET ASSETS
- --------------------------------------------------------------------------------
 
<TABLE>
<CAPTION>
                                                                     INTERNATIONAL
                                                                     EQUITY
                                                                     PORTFOLIO                      INTERNATIONAL
                                                                                                    MAGNUM
                                                                                                    PORTFOLIO
- ------------------------------------------------------------------------------------------------------------------
                                                                                                       PERIOD FROM
                                                                                                         MARCH 15,
                                                               SIX MONTHS ENDED                      1996* TO JUNE
                                                                  JUNE 30, 1996         YEAR ENDED        30, 1996
                                                                    (UNAUDITED)  DECEMBER 31, 1995     (UNAUDITED)
                                                                          (000)              (000)           (000)
- ------------------------------------------------------------------------------------------------------------------
<S>                                                           <C>                <C>                <C>
INCREASE (DECREASE) IN NET ASSETS
OPERATIONS:
  Net Investment Income                                              $   22,045         $   19,813       $     151
  Net Realized Gain (Loss)                                               47,676             88,470             (15)
  Change in Unrealized Appreciation                                     128,941             50,978           1,200
- ------------------------------------------------------------------------------------------------------------------
  Net Increase in Net Assets Resulting from Operations                  198,662            159,261           1,336
- ------------------------------------------------------------------------------------------------------------------
DISTRIBUTIONS:
  CLASS A:
  Net Investment Income                                                      --             (5,969)             --
  Net Realized Gain                                                          --           (168,582)             --
- ------------------------------------------------------------------------------------------------------------------
  Total Distributions                                                        --           (174,551)             --
- ------------------------------------------------------------------------------------------------------------------
CAPITAL SHARE TRANSACTIONS: (1)
  CLASS A:
  Subscribed                                                            310,864            276,622          60,436
  Distributions Reinvested                                                  275            167,795              --
  Redeemed                                                              (80,757)          (135,367)             --
  CLASS B+:
  Subscribed                                                              4,590                 --           1,596
  Redeemed                                                                 (167)                --              --
- ------------------------------------------------------------------------------------------------------------------
  Net Increase in Capital Share Transactions                            234,805            309,050          62,032
- ------------------------------------------------------------------------------------------------------------------
  Total Increase in Net Assets                                          433,467            293,760          63,368
NET ASSETS:
  Beginning of Period                                                 1,598,530          1,304,770              --
- ------------------------------------------------------------------------------------------------------------------
  End of Period                                               $       2,031,997  $       1,598,530  $       63,368
- ------------------------------------------------------------------------------------------------------------------
  End of period net assets consisted of accumulated
   undistributed net investment income                        $          35,264  $          13,219  $          151
- ------------------------------------------------------------------------------------------------------------------
 
 (1) CAPITAL SHARE TRANSACTIONS:
   CLASS A:
   Shares Subscribed                                                     19,546             18,165           5,916
   Shares Issued on Distributions Reinvested                                 18             11,272              --
   Shares Redeemed                                                       (4,975)            (8,961)             --
- ------------------------------------------------------------------------------------------------------------------
   Net Increase (Decrease) in Class A Shares Outstanding                 14,589             20,476           5,916
- ------------------------------------------------------------------------------------------------------------------
   CLASS B+:
   Shares Subscribed                                                        295                 --             156
   Shares Redeemed                                                          (10)                --              --
- ------------------------------------------------------------------------------------------------------------------
   Net Increase (Decrease) in Class B Shares Outstanding                    285                 --             156
- ------------------------------------------------------------------------------------------------------------------
</TABLE>
 
  * Commencement of Operations.
  + The International Equity Portfolio began offering Class B shares on January
2, 1996.
 
    The accompanying notes are an integral part of the financial statements.
- --------------------------------------------------------------------------------
 
                                      148
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
 
STATEMENT OF CHANGES IN NET ASSETS
- --------------------------------------------------------------------------------
 
<TABLE>
<CAPTION>
                                                                       INTERNATIONAL
                                                                       SMALL CAP
                                                                       PORTFOLIO
- --------------------------------------------------------------------------------------------------
                                                               SIX MONTHS ENDED
                                                                  JUNE 30, 1996         YEAR ENDED
                                                                    (UNAUDITED)  DECEMBER 31, 1995
                                                                          (000)              (000)
- --------------------------------------------------------------------------------------------------
<S>                                                           <C>                <C>
INCREASE (DECREASE) IN NET ASSETS
OPERATIONS:
  Net Investment Income                                       $           1,494  $           3,256
  Net Realized Gain (Loss)                                                1,123              7,677
  Change in Unrealized Appreciation (Depreciation)                       27,955             (6,811)
- --------------------------------------------------------------------------------------------------
  Net Increase in Net Assets Resulting from Operations                   30,572              4,122
- --------------------------------------------------------------------------------------------------
DISTRIBUTIONS:
  CLASS A:
  Net Investment Income                                                      --             (2,947)
  In Excess of Net Investment Income                                         --                 --
  Net Realized Gain                                                          --             (4,763)
- --------------------------------------------------------------------------------------------------
  Total Distributions                                                        --             (7,710)
- --------------------------------------------------------------------------------------------------
CAPITAL SHARE TRANSACTIONS: (1)
  CLASS A:
  Subscribed                                                             19,581             59,699
  Distributions Reinvested                                                   --              6,777
  Redeemed                                                              (16,359)           (24,320)
  CLASS B+:
  Subscribed                                                                 --                 --
  Redeemed                                                                   --                 --
- --------------------------------------------------------------------------------------------------
  Net Increase in Capital Share Transactions                              3,222             42,156
- --------------------------------------------------------------------------------------------------
  Total Increase in Net Assets                                           33,794             38,568
NET ASSETS:
  Beginning of Period                                                   198,669            160,101
- --------------------------------------------------------------------------------------------------
  End of Period                                               $         232,463  $         198,669
- --------------------------------------------------------------------------------------------------
  End of period net assets consisted of accumulated
   undistributed (overdistributed) net investment income      $           2,209  $             715
- --------------------------------------------------------------------------------------------------
 
 (1) CAPITAL SHARE TRANSACTIONS:
   CLASS A:
   Shares Subscribed                                                      1,188              3,865
   Shares Issued on Distributions Reinvested                                 --                453
   Shares Redeemed                                                       (1,037)            (1,584)
- --------------------------------------------------------------------------------------------------
   Net Increase in Class A Shares Outstanding                               151              2,734
- --------------------------------------------------------------------------------------------------
   CLASS B+:
   Shares Subscribed                                                         --                 --
   Shares Redeemed                                                           --                 --
- --------------------------------------------------------------------------------------------------
   Net Increase in Class B Shares Outstanding                                --                 --
- --------------------------------------------------------------------------------------------------
 
<CAPTION>
                                                                       JAPANESE
                                                                       EQUITY
                                                                       PORTFOLIO
- --------------------------------------------------------------------------------------------------
                                                               SIX MONTHS ENDED
                                                                  JUNE 30, 1996         YEAR ENDED
                                                                    (UNAUDITED)  DECEMBER 31, 1995
                                                                          (000)              (000)
- --------------------------------------------------------------------------------------------------
<S>                                                           <C>                <C>
INCREASE (DECREASE) IN NET ASSETS
OPERATIONS:
  Net Investment Income                                       $             124  $              90
  Net Realized Gain (Loss)                                                6,986             (2,999)
  Change in Unrealized Appreciation (Depreciation)                        7,122              5,934
- --------------------------------------------------------------------------------------------------
  Net Increase in Net Assets Resulting from Operations                   14,232              3,025
- --------------------------------------------------------------------------------------------------
DISTRIBUTIONS:
  CLASS A:
  Net Investment Income                                                      --                 --
  In Excess of Net Investment Income                                         --             (2,539)
  Net Realized Gain                                                          --                 --
- --------------------------------------------------------------------------------------------------
  Total Distributions                                                        --             (2,539)
- --------------------------------------------------------------------------------------------------
CAPITAL SHARE TRANSACTIONS: (1)
  CLASS A:
  Subscribed                                                            106,327            132,973
  Distributions Reinvested                                                    1              2,277
  Redeemed                                                              (13,586)           (66,790)
  CLASS B+:
  Subscribed                                                              6,710                 --
  Redeemed                                                               (1,508)                --
- --------------------------------------------------------------------------------------------------
  Net Increase in Capital Share Transactions                             97,944             68,460
- --------------------------------------------------------------------------------------------------
  Total Increase in Net Assets                                          112,176             68,946
NET ASSETS:
  Beginning of Period                                                   119,278             50,332
- --------------------------------------------------------------------------------------------------
  End of Period                                               $         231,454  $         119,278
- --------------------------------------------------------------------------------------------------
  End of period net assets consisted of accumulated
   undistributed (overdistributed) net investment income      $          (2,586) $          (2,710)
- --------------------------------------------------------------------------------------------------
 (1) CAPITAL SHARE TRANSACTIONS:
   CLASS A:
   Shares Subscribed                                                     11,161             15,121
   Shares Issued on Distributions Reinvested                                 --                245
   Shares Redeemed                                                       (1,422)            (7,618)
- --------------------------------------------------------------------------------------------------
   Net Increase in Class A Shares Outstanding                             9,739              7,748
- --------------------------------------------------------------------------------------------------
   CLASS B+:
   Shares Subscribed                                                        706                 --
   Shares Redeemed                                                         (155)                --
- --------------------------------------------------------------------------------------------------
   Net Increase in Class B Shares Outstanding                               551                 --
- --------------------------------------------------------------------------------------------------
</TABLE>
 
  + The Japanese Equity Portfolio began offering Class B shares on January 2,
1996.
 
    The accompanying notes are an integral part of the financial statements.
- --------------------------------------------------------------------------------
 
                                      149
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
 
STATEMENT OF CHANGES IN NET ASSETS
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>
                                                                        LATIN
                                                                        AMERICAN
                                                                        PORTFOLIO
- -----------------------------------------------------------------------------------------------------
                                                               SIX MONTHS ENDED           PERIOD FROM
                                                                  JUNE 30, 1996  JANUARY 18, 1995* TO
                                                                    (UNAUDITED)     DECEMBER 31, 1995
                                                                          (000)                 (000)
- -----------------------------------------------------------------------------------------------------
<S>                                                           <C>                <C>
INCREASE (DECREASE) IN NET ASSETS
OPERATIONS:
  Net Investment Income                                       $             281  $                 82
  Net Realized Gain (Loss)                                                1,875                  (543)
  Change in Unrealized Appreciation                                       4,044                   208
- -----------------------------------------------------------------------------------------------------
  Net Increase (Decrease) in Net Assets Resulting from
   Operations                                                             6,200                  (253)
- -----------------------------------------------------------------------------------------------------
DISTRIBUTIONS:
  CLASS A:
  Net Investment Income                                                      --                   (74)
  Net Realized Gain                                                          --                    --
  Return of Capital                                                          --                   (49)
  CLASS B:
  Net Investment Income                                                      --                    --
- -----------------------------------------------------------------------------------------------------
  Total Distributions                                                        --                  (123)
- -----------------------------------------------------------------------------------------------------
CAPITAL SHARE TRANSACTIONS: (1)
  CLASS A:
  Subscribed                                                              8,370                21,860
  Distributions Reinvested                                                   --                   108
  Redeemed                                                               (2,790)               (6,216)
  CLASS B+:
  Subscribed                                                                799                    --
  Distributions Reinvested                                                   --                    --
  Redeemed                                                                  (83)                   --
- -----------------------------------------------------------------------------------------------------
  Net Increase in Capital Share Transactions                              6,296                15,752
- -----------------------------------------------------------------------------------------------------
  Total Increase in Net Assets                                           12,496                15,376
NET ASSETS:
  Beginning of Period                                                    15,376                    --
- -----------------------------------------------------------------------------------------------------
  End of Period                                               $          27,872  $             15,376
- -----------------------------------------------------------------------------------------------------
  End of period net assets consisted of accumulated
   undistributed net investment income                        $             281  $                 --
- -----------------------------------------------------------------------------------------------------
 
 (1) CAPITAL SHARE TRANSACTIONS:
   CLASS A:
   Shares Subscribed                                                        781                 2,375
   Shares Issued on Distributions Reinvested                 --                                    12
   Shares Redeemed                                                         (258)                 (690)
- -----------------------------------------------------------------------------------------------------
   Net Increase in Class A Shares Outstanding                               523                 1,697
- -----------------------------------------------------------------------------------------------------
   CLASS B+:
   Shares Subscribed                                                         75                    --
   Shares Issued on Distributions Reinvested                 --                                    --
   Shares Redeemed                                                           (8)                   --
- -----------------------------------------------------------------------------------------------------
   Net Increase in Class B Shares Outstanding                                67                    --
- -----------------------------------------------------------------------------------------------------
 
<CAPTION>
                                                                        AGGRESSIVE
                                                                        EQUITY
                                                                        PORTFOLIO
- -----------------------------------------------------------------------------------------------------
                                                               SIX MONTHS ENDED  PERIOD FROM MARCH
                                                                  JUNE 30, 1996        8, 1995* TO
                                                                    (UNAUDITED)  DECEMBER 31, 1995
                                                                          (000)              (000)
- -----------------------------------------------------------------------------------------------------
<S>                                                           <C>                <C>
INCREASE (DECREASE) IN NET ASSETS
OPERATIONS:
  Net Investment Income                                       $             311  $             266
  Net Realized Gain (Loss)                                                6,776              4,041
  Change in Unrealized Appreciation                                         697              1,860
- -----------------------------------------------------------------------------------------------------
  Net Increase (Decrease) in Net Assets Resulting from
   Operations                                                             7,784              6,167
- -----------------------------------------------------------------------------------------------------
DISTRIBUTIONS:
  CLASS A:
  Net Investment Income                                                    (138)              (268)
  Net Realized Gain                                                          --             (3,617)
  Return of Capital                                                          --                 --
  CLASS B:
  Net Investment Income                                                     (14)                --
- -----------------------------------------------------------------------------------------------------
  Total Distributions                                                      (152)            (3,885)
- -----------------------------------------------------------------------------------------------------
CAPITAL SHARE TRANSACTIONS: (1)
  CLASS A:
  Subscribed                                                             12,639             26,611
  Distributions Reinvested                                                  125              3,556
  Redeemed                                                               (5,669)            (3,901)
  CLASS B+:
  Subscribed                                                              5,120                 --
  Distributions Reinvested                                                   14                 --
  Redeemed                                                                  (78)                --
- -----------------------------------------------------------------------------------------------------
  Net Increase in Capital Share Transactions                             12,151             26,266
- -----------------------------------------------------------------------------------------------------
  Total Increase in Net Assets                                           19,783             28,548
NET ASSETS:
  Beginning of Period                                                    28,548                 --
- -----------------------------------------------------------------------------------------------------
  End of Period                                               $          48,331  $          28,548
- -----------------------------------------------------------------------------------------------------
  End of period net assets consisted of accumulated
   undistributed net investment income                        $             159  $              --
- -----------------------------------------------------------------------------------------------------
 (1) CAPITAL SHARE TRANSACTIONS:
   CLASS A:
   Shares Subscribed                                                        941              2,360
   Shares Issued on Distributions Reinvested                                  9                293
   Shares Redeemed                                                         (420)              (308)
- -----------------------------------------------------------------------------------------------------
   Net Increase in Class A Shares Outstanding                               530              2,345
- -----------------------------------------------------------------------------------------------------
   CLASS B+:
   Shares Subscribed                                                        379                 --
   Shares Issued on Distributions Reinvested                                  1                 --
   Shares Redeemed                                                           (5)                --
- -----------------------------------------------------------------------------------------------------
   Net Increase in Class B Shares Outstanding                               375                 --
- -----------------------------------------------------------------------------------------------------
</TABLE>
 
  * Commencement of operations.
  + Each Portfolio began offering Class B shares on January 2, 1996.
 
    The accompanying notes are an integral part of the financial statements.
- --------------------------------------------------------------------------------
 
                                      150
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
 
STATEMENT OF CHANGES IN NET ASSETS
- --------------------------------------------------------------------------------
 
<TABLE>
<CAPTION>
                                                                       EMERGING
                                                                       GROWTH
                                                                       PORTFOLIO
- --------------------------------------------------------------------------------------------------
                                                               SIX MONTHS ENDED
                                                                  JUNE 30, 1996         YEAR ENDED
                                                                    (UNAUDITED)  DECEMBER 31, 1995
                                                                          (000)              (000)
- --------------------------------------------------------------------------------------------------
<S>                                                           <C>                <C>
INCREASE (DECREASE) IN NET ASSETS
OPERATIONS:
  Net Investment Income (Loss)                                $            (522) $          (1,009)
  Net Realized Gain                                                      20,685             11,225
  Change in Unrealized Appreciation (Depreciation)                      (12,546)            27,942
- --------------------------------------------------------------------------------------------------
  Net Increase in Net Assets Resulting from Operations                    7,617             38,158
- --------------------------------------------------------------------------------------------------
DISTRIBUTIONS:
  CLASS A:
  Net Investment Income                                                      --                 --
  Net Realized Gain                                                          --                 --
  CLASS B:
  Net Investment Income                                                      --                 --
- --------------------------------------------------------------------------------------------------
  Total Distributions                                                        --                 --
- --------------------------------------------------------------------------------------------------
CAPITAL SHARE TRANSACTIONS: (1)
  CLASS A:
  Subscribed                                                             15,336            100,167
  Distributions Reinvested                                                   --                 --
  Redeemed                                                              (45,647)          (136,616)
  CLASS B+:
  Subscribed                                                              5,398                 --
  Distributions Reinvested                                                   --                 --
  Redeemed                                                                 (586)                --
- --------------------------------------------------------------------------------------------------
  Net Increase (Decrease) in Capital Share Transactions                 (25,499)           (36,449)
- --------------------------------------------------------------------------------------------------
  Total Increase (Decrease) in Net Assets                               (17,882)             1,709
NET ASSETS:
  Beginning of Period                                                   119,378            117,669
- --------------------------------------------------------------------------------------------------
  End of Period                                               $         101,496  $         119,378
- --------------------------------------------------------------------------------------------------
  End of period net assets consisted of accumulated
   undistributed (overdistributed) net investment income      $            (522) $              --
- --------------------------------------------------------------------------------------------------
 
 (1) CAPITAL SHARE TRANSACTIONS:
   CLASS A:
   Shares Subscribed                                                        695              5,737
   Shares Issued on Distributions Reinvested                                 --                 --
   Shares Redeemed                                                       (2,055)            (7,483)
- --------------------------------------------------------------------------------------------------
   Net Increase (Decrease) in Class A Shares Outstanding                 (1,360)            (1,746)
- --------------------------------------------------------------------------------------------------
   CLASS B+:
   Shares Subscribed                                                        243                 --
   Shares Issued on Distributions Reinvested                                 --                 --
   Shares Redeemed                                                          (26)                --
- --------------------------------------------------------------------------------------------------
   Net Increase in Class B Shares Outstanding                               217                 --
- --------------------------------------------------------------------------------------------------
 
<CAPTION>
                                                                       EQUITY
                                                                       GROWTH
                                                                       PORTFOLIO
- --------------------------------------------------------------------------------------------------
                                                               SIX MONTHS ENDED
                                                                  JUNE 30, 1996         YEAR ENDED
                                                                    (UNAUDITED)  DECEMBER 31, 1995
                                                                          (000)              (000)
- --------------------------------------------------------------------------------------------------
<S>                                                           <C>                <C>
INCREASE (DECREASE) IN NET ASSETS
OPERATIONS:
  Net Investment Income (Loss)                                $           1,147  $           2,169
  Net Realized Gain                                                      21,397             32,477
  Change in Unrealized Appreciation (Depreciation)                        3,533             15,685
- --------------------------------------------------------------------------------------------------
  Net Increase in Net Assets Resulting from Operations                   26,077             50,331
- --------------------------------------------------------------------------------------------------
DISTRIBUTIONS:
  CLASS A:
  Net Investment Income                                                    (556)            (2,636)
  Net Realized Gain                                                          --            (26,092)
  CLASS B:
  Net Investment Income                                                     (13)                --
- --------------------------------------------------------------------------------------------------
  Total Distributions                                                      (569)           (28,728)
- --------------------------------------------------------------------------------------------------
CAPITAL SHARE TRANSACTIONS: (1)
  CLASS A:
  Subscribed                                                             48,353             78,470
  Distributions Reinvested                                                  478             26,785
  Redeemed                                                              (45,293)           (66,005)
  CLASS B+:
  Subscribed                                                              4,841                 --
  Distributions Reinvested                                                   12                 --
  Redeemed                                                                 (260)                --
- --------------------------------------------------------------------------------------------------
  Net Increase (Decrease) in Capital Share Transactions                   8,131             39,250
- --------------------------------------------------------------------------------------------------
  Total Increase (Decrease) in Net Assets                                33,639             60,853
NET ASSETS:
  Beginning of Period                                                   158,112             97,259
- --------------------------------------------------------------------------------------------------
  End of Period                                               $         191,751  $         158,112
- --------------------------------------------------------------------------------------------------
  End of period net assets consisted of accumulated
   undistributed (overdistributed) net investment income      $             578  $              --
- --------------------------------------------------------------------------------------------------
 (1) CAPITAL SHARE TRANSACTIONS:
   CLASS A:
   Shares Subscribed                                                      3,179              5,794
   Shares Issued on Distributions Reinvested                                 34              1,955
   Shares Redeemed                                                       (3,032)            (4,657)
- --------------------------------------------------------------------------------------------------
   Net Increase (Decrease) in Class A Shares Outstanding                    181              3,092
- --------------------------------------------------------------------------------------------------
   CLASS B+:
   Shares Subscribed                                                        314                 --
   Shares Issued on Distributions Reinvested                                  1                 --
   Shares Redeemed                                                          (17)                --
- --------------------------------------------------------------------------------------------------
   Net Increase in Class B Shares Outstanding                               298                 --
- --------------------------------------------------------------------------------------------------
</TABLE>
 
  + Each Portfolio began offering Class B shares on January 2, 1996.
 
    The accompanying notes are an integral part of the financial statements.
- --------------------------------------------------------------------------------
 
                                      151
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
 
STATEMENT OF CHANGES IN NET ASSETS
- --------------------------------------------------------------------------------
 
<TABLE>
<CAPTION>
                                                   SMALL CAP                              U.S.
                                                   VALUE                                  REAL ESTATE
                                                   PORTFOLIO                              PORTFOLIO
- --------------------------------------------------------------------------------------------------------------------------
                                            SIX MONTHS ENDED                       SIX MONTHS ENDED            PERIOD FROM
                                               JUNE 30, 1996          YEAR ENDED      JUNE 30, 1996  FEBRUARY 24, 1995* TO
                                                 (UNAUDITED)   DECEMBER 31, 1995        (UNAUDITED)      DECEMBER 31, 1995
                                                       (000)               (000)              (000)                  (000)
- --------------------------------------------------------------------------------------------------------------------------
<S>                                       <C>                 <C>                 <C>                <C>
INCREASE (DECREASE) IN NET ASSETS
OPERATIONS:
  Net Investment Income                            $     606           $   1,223          $   1,581              $   1,526
  Net Realized Gain                                    2,943               1,546              6,539                  3,495
  Change in Unrealized Appreciation                    1,396               5,880              2,394                  3,896
- --------------------------------------------------------------------------------------------------------------------------
  Net Increase in Net Assets Resulting
   from Operations                                     4,945               8,649             10,514                  8,917
- --------------------------------------------------------------------------------------------------------------------------
DISTRIBUTIONS:
  CLASS A:
  Net Investment Income                                 (305)             (1,519)            (1,121)                (1,405)
  Net Realized Gain                                       --              (2,511)                --                 (2,504)
  CLASS B:
  Net Investment Income                                   (6)                 --                (33)                    --
- --------------------------------------------------------------------------------------------------------------------------
  Total Distributions                                   (311)             (4,030)            (1,154)                (3,909)
- --------------------------------------------------------------------------------------------------------------------------
CAPITAL SHARE TRANSACTIONS: (1)
  CLASS A:
  Subscribed                                           7,327              18,293             44,905                 67,651
  Distributions Reinvested                               280               3,611                982                  3,148
  Redeemed                                           (17,327)            (14,637)            (4,813)                (6,298)
  CLASS B+:
  Subscribed                                           1,546                  --              5,310                     --
  Distributions Reinvested                                 6                  --                 27                     --
  Redeemed                                              (128)                 --               (768)                    --
- --------------------------------------------------------------------------------------------------------------------------
  Net Increase (Decrease) in Capital
   Share Transactions                                 (8,296)              7,267             45,643                 64,501
- --------------------------------------------------------------------------------------------------------------------------
  Total Increase (Decrease) in Net
   Assets                                             (3,662)             11,886             55,003                 69,509
NET ASSETS:
  Beginning of Period                                 51,919              40,033             69,509                     --
- --------------------------------------------------------------------------------------------------------------------------
  End of Period                           $           48,257  $           51,919  $         124,512  $              69,509
- --------------------------------------------------------------------------------------------------------------------------
  End of period net assets consisted of
   accumulated undistributed net
   investment income                      $              295  $               --  $             548  $                 121
- --------------------------------------------------------------------------------------------------------------------------
 
 (1) CAPITAL SHARE TRANSACTIONS:
   CLASS A:
   Shares Subscribed                                     594               1,631              3,784                  6,381
   Shares Issued on Distributions Reinvested              22                 324                 83                    279
   Shares Redeemed                                    (1,379)             (1,304)              (405)                  (573)
- --------------------------------------------------------------------------------------------------------------------------
   Net Increase (Decrease) in Class A
     Shares Outstanding                                 (763)                651              3,462                  6,087
- --------------------------------------------------------------------------------------------------------------------------
   CLASS B+:
   Shares Subscribed                                     126                  --                444                     --
   Shares Issued on Distributions Reinvested              --                  --                  2                     --
    Shares Redeemed                                      (10)                                   (62)                    --
- --------------------------------------------------------------------------------------------------------------------------
   Net Increase in Class B Shares
     Outstanding                                         116                  --                384                     --
- --------------------------------------------------------------------------------------------------------------------------
</TABLE>
 
  * Commencement of operations.
  + Each Portfolio began offering Class B shares on January 2, 1996.
 
    The accompanying notes are an integral part of the financial statements.
- --------------------------------------------------------------------------------
 
                                      152
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
 
STATEMENT OF CHANGES IN NET ASSETS
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>
                                                                       VALUE
                                                                       EQUITY
                                                                       PORTFOLIO
- --------------------------------------------------------------------------------------------------
                                                               SIX MONTHS ENDED
                                                                  JUNE 30, 1996         YEAR ENDED
                                                                    (UNAUDITED)  DECEMBER 31, 1995
                                                                          (000)              (000)
- --------------------------------------------------------------------------------------------------
<S>                                                           <C>                <C>
INCREASE (DECREASE) IN NET ASSETS
OPERATIONS:
  Net Investment Income                                       $           1,976  $           3,434
  Net Realized Gain                                                       7,167             10,276
  Change in Unrealized Appreciation (Depreciation)                        3,057             17,116
- --------------------------------------------------------------------------------------------------
  Net Increase in Net Assets Resulting from Operations                   12,200             30,826
- --------------------------------------------------------------------------------------------------
DISTRIBUTIONS:
  CLASS A:
  Net Investment Income                                                    (972)            (4,042)
  Net Realized Gain                                                          --             (6,330)
  CLASS B:
  Net Investment Income                                                     (11)                --
- --------------------------------------------------------------------------------------------------
  Total Distributions                                                      (983)           (10,372)
- --------------------------------------------------------------------------------------------------
CAPITAL SHARE TRANSACTIONS: (1)
  CLASS A:
  Subscribed                                                             25,552             70,393
  Distributions Reinvested                                                  859              9,289
  Redeemed                                                              (50,616)           (26,177)
  CLASS B+:
  Subscribed                                                              2,079                 --
  Distributions Reinvested                                                   11                 --
  Redeemed                                                                 (197)                --
- --------------------------------------------------------------------------------------------------
  Net Increase (Decrease) in Capital Share Transactions                 (22,312)            53,505
- --------------------------------------------------------------------------------------------------
  Total Increase (Decrease) in Net Assets                               (11,095)            73,959
NET ASSETS:
  Beginning of Period                                                   147,365             73,406
- --------------------------------------------------------------------------------------------------
  End of Period                                               $         136,270  $         147,365
- --------------------------------------------------------------------------------------------------
  End of period net assets consisted of accumulated
   undistributed net investment income                        $           1,001  $               8
- --------------------------------------------------------------------------------------------------
 
 (1) CAPITAL SHARE TRANSACTIONS:
    CLASS A:
    Shares Subscribed                                                     1,764              5,522
    Shares Issued on Distributions Reinvested                                58                731
    Shares Redeemed                                                      (3,457)            (2,068)
- --------------------------------------------------------------------------------------------------
    Net Increase (Decrease) in Class A Shares Outstanding                (1,635)             4,185
- --------------------------------------------------------------------------------------------------
    CLASS B+:
    Shares Subscribed                                                       142                 --
    Shares Issued on Distributions Reinvested                                 1                 --
    Shares Redeemed                                                         (13)                --
- --------------------------------------------------------------------------------------------------
    Net Increase in Class B Shares Outstanding                              130                 --
- --------------------------------------------------------------------------------------------------
 
<CAPTION>
 
                                                                       BALANCED
                                                                       PORTFOLIO
- --------------------------------------------------------------------------------------------------
                                                               SIX MONTHS ENDED
                                                                  JUNE 30, 1996         YEAR ENDED
                                                                    (UNAUDITED)  DECEMBER 31, 1995
                                                                          (000)              (000)
- --------------------------------------------------------------------------------------------------
<S>                                                           <C>                <C>
INCREASE (DECREASE) IN NET ASSETS
OPERATIONS:
  Net Investment Income                                       $             381  $             868
  Net Realized Gain                                                         979              1,158
  Change in Unrealized Appreciation (Depreciation)                         (539)             2,413
- --------------------------------------------------------------------------------------------------
  Net Increase in Net Assets Resulting from Operations                      821              4,439
- --------------------------------------------------------------------------------------------------
DISTRIBUTIONS:
  CLASS A:
  Net Investment Income                                                    (173)            (1,080)
  Net Realized Gain                                                          --             (1,047)
  CLASS B:
  Net Investment Income                                                     (25)                --
- --------------------------------------------------------------------------------------------------
  Total Distributions                                                      (198)            (2,127)
- --------------------------------------------------------------------------------------------------
CAPITAL SHARE TRANSACTIONS: (1)
  CLASS A:
  Subscribed                                                              1,179              3,530
  Distributions Reinvested                                                  128              1,695
  Redeemed                                                              (11,355)            (3,387)
  CLASS B+:
  Subscribed                                                              2,573                 --
  Distributions Reinvested                                                   24                 --
  Redeemed                                                                 (285)                --
- --------------------------------------------------------------------------------------------------
  Net Increase (Decrease) in Capital Share Transactions                  (7,736)             1,838
- --------------------------------------------------------------------------------------------------
  Total Increase (Decrease) in Net Assets                                (7,113)             4,150
NET ASSETS:
  Beginning of Period                                                    22,642             18,492
- --------------------------------------------------------------------------------------------------
  End of Period                                               $          15,529  $          22,642
- --------------------------------------------------------------------------------------------------
  End of period net assets consisted of accumulated
   undistributed net investment income                        $             185  $               2
- --------------------------------------------------------------------------------------------------
 (1) CAPITAL SHARE TRANSACTIONS:
    CLASS A:
    Shares Subscribed                                                       118                380
    Shares Issued on Distributions Reinvested                                13                182
    Shares Redeemed                                                      (1,117)              (358)
- --------------------------------------------------------------------------------------------------
    Net Increase (Decrease) in Class A Shares Outstanding                  (986)               204
- --------------------------------------------------------------------------------------------------
    CLASS B+:
    Shares Subscribed                                                       255                 --
    Shares Issued on Distributions Reinvested                                 2                 --
    Shares Redeemed                                                         (27)                --
- --------------------------------------------------------------------------------------------------
    Net Increase in Class B Shares Outstanding                              230                 --
- --------------------------------------------------------------------------------------------------
</TABLE>
 
  + Each Portfolio began offering Class B shares on January 2, 1996.
 
    The accompanying notes are an integral part of the financial statements.
- --------------------------------------------------------------------------------
 
                                      153
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
 
STATEMENT OF CHANGES IN NET ASSETS
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>
                                                                       EMERGING
                                                                       MARKETS DEBT
                                                                       PORTFOLIO
- --------------------------------------------------------------------------------------------------
                                                               SIX MONTHS ENDED
                                                                  JUNE 30, 1996         YEAR ENDED
                                                                    (UNAUDITED)  DECEMBER 31, 1995
                                                                          (000)              (000)
- --------------------------------------------------------------------------------------------------
<S>                                                           <C>                <C>
INCREASE (DECREASE) IN NET ASSETS
OPERATIONS:
  Net Investment Income                                       $          11,731  $          25,020
  Net Realized Gain                                                      17,067              9,187
  Change in Unrealized Appreciation (Depreciation)                        2,800             15,290
- --------------------------------------------------------------------------------------------------
  Net Increase (Decrease) in Net Assets Resulting from
   Operations                                                            31,598             49,497
- --------------------------------------------------------------------------------------------------
DISTRIBUTIONS:
  CLASS A:
  Net Investment Income                                                      --            (33,418)
  Net Realized Gain                                                          --             (7,508)
  CLASS B:
  Net Investment Income                                                      --                 --
- --------------------------------------------------------------------------------------------------
  Total Distributions                                                        --            (40,926)
- --------------------------------------------------------------------------------------------------
CAPITAL SHARE TRANSACTIONS: (1)
  CLASS A:
  Subscribed                                                             34,758            147,278
  Distributions Reinvested                                                   --             29,155
  Redeemed                                                              (55,920)          (148,075)
  CLASS B+:
  Subscribed                                                              2,795                 --
  Distributions Reinvested                                                   --                 --
  Redeemed                                                                  (59)                --
- --------------------------------------------------------------------------------------------------
  Net Increase (Decrease) in Capital Share Transactions                 (18,426)            28,358
- --------------------------------------------------------------------------------------------------
  Total Increase (Decrease) in Net Assets                                13,172             36,929
NET ASSETS:
  Beginning of Period                                                   181,878            144,949
- --------------------------------------------------------------------------------------------------
  End of Period                                               $         195,050  $         181,878
- --------------------------------------------------------------------------------------------------
  End of period net assets consisted of accumulated
   undistributed (overdistributed) net investment income      $          10,230  $          (1,501)
- --------------------------------------------------------------------------------------------------
 
 (1) CAPITAL SHARE TRANSACTIONS:
    CLASS A:
    Shares Subscribed                                                     3,834             18,475
    Shares Issued on Distributions Reinvested                                --              3,468
    Shares Redeemed                                                      (6,121)           (17,651)
- --------------------------------------------------------------------------------------------------
    Net Increase (Decrease) in Class A Shares Outstanding                (2,287)             4,292
- --------------------------------------------------------------------------------------------------
    CLASS B+:
    Shares Subscribed                                                       309                 --
    Shares Issued on Distributions Reinvested                                --                 --
    Shares Redeemed                                                          (6)                --
- --------------------------------------------------------------------------------------------------
    Net Increase in Class B Shares Outstanding                              303                 --
- --------------------------------------------------------------------------------------------------
 
<CAPTION>
                                                                       FIXED
                                                                       INCOME
                                                                       PORTFOLIO
- --------------------------------------------------------------------------------------------------
                                                               SIX MONTHS ENDED
                                                                  JUNE 30, 1996         YEAR ENDED
                                                                    (UNAUDITED)  DECEMBER 31, 1995
                                                                          (000)              (000)
- --------------------------------------------------------------------------------------------------
<S>                                                           <C>                <C>
INCREASE (DECREASE) IN NET ASSETS
OPERATIONS:
  Net Investment Income                                       $           5,133  $          12,208
  Net Realized Gain                                                       1,718              5,921
  Change in Unrealized Appreciation (Depreciation)                       (8,518)            13,125
- --------------------------------------------------------------------------------------------------
  Net Increase (Decrease) in Net Assets Resulting from
   Operations                                                            (1,667)            31,254
- --------------------------------------------------------------------------------------------------
DISTRIBUTIONS:
  CLASS A:
  Net Investment Income                                                  (3,578)           (13,570)
  Net Realized Gain                                                          --                 --
  CLASS B:
  Net Investment Income                                                     (15)                --
- --------------------------------------------------------------------------------------------------
  Total Distributions                                                    (3,593)           (13,570)
- --------------------------------------------------------------------------------------------------
CAPITAL SHARE TRANSACTIONS: (1)
  CLASS A:
  Subscribed                                                             28,810             67,883
  Distributions Reinvested                                                2,875             10,529
  Redeemed                                                              (34,863)          (139,900)
  CLASS B+:
  Subscribed                                                              1,637                 --
  Distributions Reinvested                                                   14                 --
  Redeemed                                                                 (371)                --
- --------------------------------------------------------------------------------------------------
  Net Increase (Decrease) in Capital Share Transactions                  (1,898)           (61,488)
- --------------------------------------------------------------------------------------------------
  Total Increase (Decrease) in Net Assets                                (7,158)           (43,804)
NET ASSETS:
  Beginning of Period                                                   165,527            209,331
- --------------------------------------------------------------------------------------------------
  End of Period                                               $         158,369  $         165,527
- --------------------------------------------------------------------------------------------------
  End of period net assets consisted of accumulated
   undistributed (overdistributed) net investment income      $           1,550  $              10
- --------------------------------------------------------------------------------------------------
 (1) CAPITAL SHARE TRANSACTIONS:
    CLASS A:
    Shares Subscribed                                                     2,737              6,668
    Shares Issued on Distributions Reinvested                               272              1,022
    Shares Redeemed                                                      (3,329)           (13,696)
- --------------------------------------------------------------------------------------------------
    Net Increase (Decrease) in Class A Shares Outstanding                  (320)            (6,006)
- --------------------------------------------------------------------------------------------------
    CLASS B+:
    Shares Subscribed                                                       156                 --
    Shares Issued on Distributions Reinvested                                 1                 --
    Shares Redeemed                                                         (36)                --
- --------------------------------------------------------------------------------------------------
    Net Increase in Class B Shares Outstanding                              121                 --
- --------------------------------------------------------------------------------------------------
</TABLE>
 
  + Each Portfolio began offering Class B shares on January 2, 1996.
 
    The accompanying notes are an integral part of the financial statements.
- --------------------------------------------------------------------------------
 
                                      154
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
 
STATEMENT OF CHANGES IN NET ASSETS
- --------------------------------------------------------------------------------
 
<TABLE>
<CAPTION>
                                                                       GLOBAL
                                                                       FIXED INCOME
                                                                       PORTFOLIO
- --------------------------------------------------------------------------------------------------
                                                               SIX MONTHS ENDED
                                                                  JUNE 30, 1996         YEAR ENDED
                                                                    (UNAUDITED)  DECEMBER 31, 1995
                                                                          (000)              (000)
- --------------------------------------------------------------------------------------------------
<S>                                                           <C>                <C>
INCREASE (DECREASE) IN NET ASSETS
OPERATIONS:
  Net Investment Income                                       $           3,000  $           6,508
  Net Realized Gain (Loss)                                                1,761                 15
  Change in Unrealized Appreciation (Depreciation)                       (4,331)            10,191
- --------------------------------------------------------------------------------------------------
  Net Increase in Net Assets Resulting from Operations                      430             16,714
- --------------------------------------------------------------------------------------------------
DISTRIBUTIONS:
  CLASS A:
  Net Investment Income                                                  (1,606)            (9,003)
  CLASS B:
  Net Investment Income                                                     (30)                --
- --------------------------------------------------------------------------------------------------
  Total Distributions                                                    (1,636)            (9,003)
- --------------------------------------------------------------------------------------------------
CAPITAL SHARE TRANSACTIONS: (1)
  CLASS A:
  Subscribed                                                             40,076             36,622
  Distributions Reinvested                                                1,439              7,887
  Redeemed                                                              (26,783)           (80,043)
  CLASS B+:
  Subscribed                                                              2,001                 --
  Distributions Reinvested                                                   26                 --
  Redeemed                                                                 (406)                --
- --------------------------------------------------------------------------------------------------
  Net Increase (Decrease) in Capital Share Transactions                  16,353            (35,534)
- --------------------------------------------------------------------------------------------------
  Total Increase (Decrease) in Net Assets                                15,147            (27,823)
NET ASSETS:
  Beginning of Period                                                   102,852            130,675
- --------------------------------------------------------------------------------------------------
  End of Period                                               $         117,999  $         102,852
- --------------------------------------------------------------------------------------------------
  End of period net assets consisted of accumulated
   undistributed net investment income                        $           1,673  $             309
- --------------------------------------------------------------------------------------------------
 
 (1) CAPITAL SHARE TRANSACTIONS:
   CLASS A:
   Shares Subscribed                                                      3,652              3,346
   Shares Issued on Distributions Reinvested                                132                737
   Shares Redeemed                                                       (2,428)            (7,623)
- --------------------------------------------------------------------------------------------------
   Net Increase (Decrease) in Class A Shares Outstanding                  1,356             (3,540)
- --------------------------------------------------------------------------------------------------
   CLASS B+:
   Shares Subscribed                                                        181                 --
   Shares Issued on Distributions Reinvested                                  2                 --
   Shares Redeemed                                                          (37)                --
- --------------------------------------------------------------------------------------------------
   Net Increase in Class B Shares Outstanding                               146                 --
- --------------------------------------------------------------------------------------------------
 
<CAPTION>
                                                                       HIGH
                                                                       YIELD
                                                                       PORTFOLIO
- --------------------------------------------------------------------------------------------------
                                                               SIX MONTHS ENDED
                                                                  JUNE 30, 1996         YEAR ENDED
                                                                    (UNAUDITED)  DECEMBER 31, 1995
                                                                          (000)              (000)
- --------------------------------------------------------------------------------------------------
<S>                                                           <C>                <C>
INCREASE (DECREASE) IN NET ASSETS
OPERATIONS:
  Net Investment Income                                       $           3,691  $           7,477
  Net Realized Gain (Loss)                                                1,095             (3,145)
  Change in Unrealized Appreciation (Depreciation)                       (1,570)             9,886
- --------------------------------------------------------------------------------------------------
  Net Increase in Net Assets Resulting from Operations                    3,216             14,218
- --------------------------------------------------------------------------------------------------
DISTRIBUTIONS:
  CLASS A:
  Net Investment Income                                                  (2,981)            (8,122)
  CLASS B:
  Net Investment Income                                                     (66)                --
- --------------------------------------------------------------------------------------------------
  Total Distributions                                                    (3,047)            (8,122)
- --------------------------------------------------------------------------------------------------
CAPITAL SHARE TRANSACTIONS: (1)
  CLASS A:
  Subscribed                                                             36,286             59,247
  Distributions Reinvested                                                2,270              6,088
  Redeemed                                                              (13,083)          (106,409)
  CLASS B+:
  Subscribed                                                              4,907                 --
  Distributions Reinvested                                                   50                 --
  Redeemed                                                               (1,443)                --
- --------------------------------------------------------------------------------------------------
  Net Increase (Decrease) in Capital Share Transactions                  28,987            (41,074)
- --------------------------------------------------------------------------------------------------
  Total Increase (Decrease) in Net Assets                                29,156            (34,978)
NET ASSETS:
  Beginning of Period                                                    62,245             97,223
- --------------------------------------------------------------------------------------------------
  End of Period                                               $          91,401  $          62,245
- --------------------------------------------------------------------------------------------------
  End of period net assets consisted of accumulated
   undistributed net investment income                        $             730  $              86
- --------------------------------------------------------------------------------------------------
 (1) CAPITAL SHARE TRANSACTIONS:
   CLASS A:
   Shares Subscribed                                                      3,438              5,865
   Shares Issued on Distributions Reinvested                                214                609
   Shares Redeemed                                                       (1,231)           (10,704)
- --------------------------------------------------------------------------------------------------
   Net Increase (Decrease) in Class A Shares Outstanding                  2,421             (4,230)
- --------------------------------------------------------------------------------------------------
   CLASS B+:
   Shares Subscribed                                                        466                 --
   Shares Issued on Distributions Reinvested                                  5                 --
   Shares Redeemed                                                         (137)                --
- --------------------------------------------------------------------------------------------------
   Net Increase in Class B Shares Outstanding                               334                 --
- --------------------------------------------------------------------------------------------------
</TABLE>
 
  + Each Portfolio began offering Class B shares on January 2, 1996.
 
    The accompanying notes are an integral part of the financial statements.
- --------------------------------------------------------------------------------
 
                                      155
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
 
STATEMENT OF CHANGES IN NET ASSETS
- --------------------------------------------------------------------------------
 
<TABLE>
<CAPTION>
                                                                       MUNICIPAL
                                                                       BOND
                                                                       PORTFOLIO
- ------------------------------------------------------------------------------------------------------
                                                                SIX MONTHS ENDED           PERIOD FROM
                                                                   JUNE 30, 1996  JANUARY 18, 1995* TO
                                                                     (UNAUDITED)     DECEMBER 31, 1995
                                                                           (000)                 (000)
- ------------------------------------------------------------------------------------------------------
<S>                                                           <C>                 <C>
INCREASE (DECREASE) IN NET ASSETS
OPERATIONS:
  Net Investment Income                                                $     983             $   1,963
  Net Realized Gain (Loss)                                                  (100)                  193
  Change in Unrealized Appreciation (Depreciation)                        (1,066)                1,635
- ------------------------------------------------------------------------------------------------------
  Net Increase (Decrease) in Net Assets Resulting from
   Operations                                                               (183)                3,791
- ------------------------------------------------------------------------------------------------------
DISTRIBUTIONS:
  CLASS A:
  Net Investment Income                                                     (826)               (1,963)
  In Excess of Net Investment Income                                                               (15)
  Net Realized Gain                                                           --                  (193)
  CLASS B:
  Net Investment Income                                                       (2)                   --
- ------------------------------------------------------------------------------------------------------
  Total Distributions                                                       (828)               (2,171)
- ------------------------------------------------------------------------------------------------------
CAPITAL SHARE TRANSACTIONS: (1)
  CLASS A:
  Subscribed                                                               8,809                61,800
  Distributions Reinvested                                                   777                 2,060
  Redeemed                                                               (22,576)              (19,611)
  CLASS B+:
  Subscribed                                                                 171                    --
  Distributions Reinvested                                                     2                    --
  Redeemed                                                                    (4)                   --
- ------------------------------------------------------------------------------------------------------
  Net Increase (Decrease) in Capital Share Transactions                  (12,821)               44,249
- ------------------------------------------------------------------------------------------------------
  Total Increase (Decrease) in Net Assets                                (13,832)               45,869
NET ASSETS:
  Beginning of Period                                                     45,869                    --
- ------------------------------------------------------------------------------------------------------
  End of Period                                               $           32,037  $             45,869
- ------------------------------------------------------------------------------------------------------
  End of period net assets consisted of accumulated
   undistributed
   (overdistributed) net investment income                    $              140  $                (15)
- ------------------------------------------------------------------------------------------------------
 
 (1) CAPITAL SHARE TRANSACTIONS:
   CLASS A:
   Shares Subscribed                                                         854                 6,134
   Shares Issued on Distributions Reinvested                                  76                   200
   Shares Redeemed                                                        (2,215)               (1,912)
- ------------------------------------------------------------------------------------------------------
   Net Increase (Decrease) in Class A Shares Outstanding                  (1,285)                4,422
- ------------------------------------------------------------------------------------------------------
   CLASS B+:
   Shares Subscribed                                                          17                    --
- ------------------------------------------------------------------------------------------------------
   Net Increase in Class B Shares Outstanding                                 17                    --
- ------------------------------------------------------------------------------------------------------
</TABLE>
 
  * Commencement of operations.
  + The Portfolio began offering Class B Shares on January 2, 1996.
 
    The accompanying notes are an integral part of the financial statements.
- --------------------------------------------------------------------------------
 
                                      156
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
 
STATEMENT OF CHANGES IN NET ASSETS
- --------------------------------------------------------------------------------
 
<TABLE>
<CAPTION>
                                                                                         MUNICIPAL
                                                   MONEY                                 MONEY
                                                   MARKET                                MARKET
                                                   PORTFOLIO                             PORTFOLIO
- -----------------------------------------------------------------------------------------------------------------------
                                              SIX MONTHS ENDED         YEAR ENDED   SIX MONTHS ENDED
                                                 JUNE 30, 1996       DECEMBER 31,      JUNE 30, 1996         YEAR ENDED
                                                   (UNAUDITED)               1995        (UNAUDITED)  DECEMBER 31, 1995
                                                         (000)              (000)              (000)              (000)
- -----------------------------------------------------------------------------------------------------------------------
<S>                                          <C>                <C>                <C>                <C>
INCREASE (DECREASE) IN NET ASSETS
OPERATIONS:
  Net Investment Income                            $    25,499        $    44,657        $     8,509        $    13,579
  Net Realized Gain (Loss)                                (474)                79                 (2)                (1)
- -----------------------------------------------------------------------------------------------------------------------
  Net Increase in Net Assets Resulting from
   Operations                                           25,025             44,736              8,507             13,578
- -----------------------------------------------------------------------------------------------------------------------
DISTRIBUTIONS:
  Net Investment Income                                (25,499)           (44,657)            (8,509)           (13,579)
- -----------------------------------------------------------------------------------------------------------------------
CAPITAL SHARE TRANSACTIONS: (1)
  Subscribed                                         6,205,074          8,093,985          2,717,683          3,169,110
  Distributions Reinvested                              23,713             41,765              7,921             13,182
  Redeemed                                          (6,002,622)        (7,989,639)        (2,407,056)        (3,090,216)
- -----------------------------------------------------------------------------------------------------------------------
  Net Increase in Capital Share
   Transactions                                        226,165            146,111            318,548             92,076
- -----------------------------------------------------------------------------------------------------------------------
  Total Increase in Net Assets                         225,691            146,190            318,546             92,075
NET ASSETS:
  Beginning of Period                                  836,693            690,503            451,519            359,444
- -----------------------------------------------------------------------------------------------------------------------
  End of Period                              $       1,062,384  $         836,693  $         770,065  $         451,519
- -----------------------------------------------------------------------------------------------------------------------
 
(1) CAPITAL SHARE TRANSACTIONS:
   Shares Subscribed                                 6,205,074          8,093,987          2,717,683          3,169,110
   Shares Issued on Distributions
   Reinvested                                           23,713             41,765              7,921             13,182
   Shares Redeemed                                  (6,002,622)        (7,989,639)        (2,407,056)        (3,090,216)
- -----------------------------------------------------------------------------------------------------------------------
  Net Increase in Shares Outstanding                   226,165            146,113            318,548             92,076
- -----------------------------------------------------------------------------------------------------------------------
</TABLE>
 
    The accompanying notes are an integral part of the financial statements.
- --------------------------------------------------------------------------------
 
                                      157
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
FINANCIAL HIGHLIGHTS
SELECTED PER SHARE DATA AND RATIOS:
- --------------------------------------------------------------------------------
 
THE ACTIVE COUNTRY ALLOCATION PORTFOLIO
 
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>
                                                                           CLASS A
                                          -------------------------------------------------------------------------
                                                   SIX MONTHS
                                                        ENDED
                                                     JUNE 30,        YEAR ENDED        YEAR ENDED        YEAR ENDED
                                                         1996      DECEMBER 31,      DECEMBER 31,      DECEMBER 31,
                                                  (UNAUDITED)              1995              1994              1993
- -------------------------------------------------------------------------------------------------------------------
<S>                                       <C>                   <C>               <C>               <C>
NET ASSET VALUE, BEGINNING OF PERIOD      $             11.63   $         11.65   $         12.21   $          9.59
                                                       ------            ------            ------            ------
INCOME FROM INVESTMENT OPERATIONS
  Net Investment Income (1)                              0.07              0.17              0.19              0.13
  Net Realized and Unrealized Gain
   (Loss) on Investments                                 0.88              1.00             (0.25)             2.75
                                                       ------            ------            ------            ------
    Total from Investment Operations                     0.95              1.17             (0.06)             2.88
                                                       ------            ------            ------            ------
DISTRIBUTIONS
  Net Investment Income                                    --             (0.25)            (0.14)            (0.09)
  In Excess of Net Investment Income                       --             (0.10)               --             (0.08)
  Net Realized Gain                                        --             (0.84)            (0.36)               --
  In Excess of Net Realized Gain                           --                --                --             (0.09)
                                                       ------            ------            ------            ------
    Total Distributions                                    --             (1.19)            (0.50)            (0.26)
                                                       ------            ------            ------            ------
NET ASSET VALUE, END OF PERIOD            $             12.58   $         11.63   $         11.65   $         12.21
                                                       ------            ------            ------            ------
                                                       ------            ------            ------            ------
TOTAL RETURN                                             8.17%            10.57%            (0.52)%           30.72%
                                                       ------            ------            ------            ------
                                                       ------            ------            ------            ------
RATIOS AND SUPPLEMENTAL DATA:
Net Assets, End of Period (Thousands)                $175,678          $170,663          $182,977          $150,854
Ratio of Expenses to Average Net Assets
  (1)                                                    0.80%**            0.80%            0.80%             0.80%
Ratio of Net Investment Income to
  Average Net Assets (1)                                 1.58%**            1.26%            1.43%             1.29%
Portfolio Turnover Rate                                   %34               %72               %51               %53
Average Commission Rate#                              $0.0021               N/A               N/A               N/A
- -----------------
(1) Effect of voluntary expense limitation during the period:
    Per share benefit to net investment
     income                                             $0.01             $0.05             $0.03             $0.05
   Ratios before expense limitation:
    Expenses to Average Net Assets                       1.12%**            1.18%            1.00%             1.33%
    Net Investment Income to Average Net
     Assets                                              1.26%**            0.88%            1.23%             0.76%
- -------------------------------------------------------------------------------------------------------------------
 
<CAPTION>
 
                                                               PERIOD FROM
                                               TWO MONTHS      JANUARY 17,
                                                    ENDED         1992* TO
                                             DECEMBER 31,      OCTOBER 31,
                                                     1992             1992
- -----------------------------------------------------------------------------------------
<S>                                       <C>               <C>
NET ASSET VALUE, BEGINNING OF PERIOD      $          9.37   $        10.00
                                                    -----           ------
INCOME FROM INVESTMENT OPERATIONS
  Net Investment Income (1)                          0.02             0.11
  Net Realized and Unrealized Gain
   (Loss) on Investments                             0.20            (0.74)
                                                    -----           ------
    Total from Investment Operations                 0.22            (0.63)
                                                    -----           ------
DISTRIBUTIONS
  Net Investment Income                                --               --
  In Excess of Net Investment Income                   --               --
  Net Realized Gain                                    --               --
  In Excess of Net Realized Gain                       --               --
                                                    -----           ------
    Total Distributions                                --               --
                                                    -----           ------
NET ASSET VALUE, END OF PERIOD            $          9.59   $         9.37
                                                    -----           ------
                                                    -----           ------
TOTAL RETURN                                         2.35%           (6.30)%
                                                    -----           ------
                                                    -----           ------
RATIOS AND SUPPLEMENTAL DATA:
Net Assets, End of Period (Thousands)             $50,234          $47,534
Ratio of Expenses to Average Net Assets
  (1)                                                0.80%**           0.88%**
Ratio of Net Investment Income to
  Average Net Assets (1)                             1.22%**           2.32%**
Portfolio Turnover Rate                               % 2              %62
Average Commission Rate#                              N/A              N/A
- -----------------
(1) Effect of voluntary expense limitati
    Per share benefit to net investment
     income                                         $0.01            $0.03
   Ratios before expense limitation:
    Expenses to Average Net Assets                   1.70%**           1.58%**
    Net Investment Income to Average Net
     Assets                                          0.32%**           1.62%**
- ---------------------------------------------------------------------------------------------------------
</TABLE>
 
<TABLE>
<CAPTION>
                                                               CLASS B
                                                           ----------------
                                                                 JANUARY 2,
                                                                 1996*** TO
                                                                   JUNE 30,
                                                                       1996
                                                                (UNAUDITED)
- -------------------------------------------------------------------------
<S>                                                        <C>
NET ASSET VALUE, BEGINNING OF PERIOD                       $          11.66
                                                                     ------
INCOME FROM INVESTMENT OPERATIONS
  Net Investment Income (2)                                            0.07
  Net Realized and Unrealized Gain (Loss) on Investments               0.84
                                                                     ------
    Total from Investment Operations                                   0.91
                                                                     ------
NET ASSET VALUE, END OF PERIOD                             $          12.57
                                                                     ------
                                                                     ------
TOTAL RETURN                                                           7.80%
                                                                     ------
                                                                     ------
RATIOS AND SUPPLEMENTAL DATA:
Net Assets, End of Period (Thousands)                      $            720
Ratio of Expenses to Average Net Assets (2)                            1.05%**
Ratio of Net Investment Income to Average Net Assets (2)               1.84%**
Portfolio Turnover Rate                                                  34%
Average Commission Rate                                             $0.0021
- -----------------
(2) Effect of voluntary expense limitation during the period:
    Per share benefit to net investment income                        $0.01
   Ratios before expense limitation:
    Expenses to Average Net Assets                                     1.37%**
    Net Investment Income to Average Net Assets                        1.52%**
</TABLE>
 
- --------------------------------------------------------------------------------
 
  *Commencement of operations.
 
 **Annualized
 
***The Portfolio began offering Class B shares on January 2, 1996.
 #Beginning with fiscal year 1996, the Portfolio is required to disclose the
  average commission rate per share it paid for portfolio trades, on which
  commissions were charged, during the period.
 
    The accompanying notes are an integral part of the financial statements.
 
- --------------------------------------------------------------------------------
                                      158
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
FINANCIAL HIGHLIGHTS
SELECTED PER SHARE DATA AND RATIOS:
- --------------------------------------------------------------------------------
 
THE ASIAN EQUITY PORTFOLIO
 
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>
                                                                        CLASS A
                                ----------------------------------------------------------------------------------------
                                      SIX MONTHS
                                           ENDED                                                              TWO MONTHS
                                        JUNE 30,        YEAR ENDED        YEAR ENDED        YEAR ENDED             ENDED
                                            1996      DECEMBER 31,      DECEMBER 31,      DECEMBER 31,      DECEMBER 31,
                                     (UNAUDITED)              1995              1994              1993              1992
- ------------------------------------------------------------------------------------------------------------------------
<S>                             <C>                <C>               <C>               <C>               <C>
NET ASSET VALUE, BEGINNING OF
  PERIOD                        $          19.48   $         21.54   $         26.20   $         13.11   $         13.63
                                          ------            ------            ------            ------            ------
INCOME FROM INVESTMENT
  OPERATIONS
  Net Investment Income (1)                 0.10              0.18              0.11              0.10              0.01
  Net Realized and Unrealized
    Gain (Loss) on Investments              1.02              1.11             (4.15)            13.38             (0.53)
                                          ------            ------            ------            ------            ------
    Total from Investment
     Operations                             1.12              1.29             (4.04)            13.48             (0.52)
                                          ------            ------            ------            ------            ------
DISTRIBUTIONS
  Net Investment Income                       --             (0.34)            (0.09)            (0.01)               --
  In Excess of Net Investment
   Income                                     --             (0.00)+              --             (0.13)               --
  Net Realized Gain                           --             (3.01)            (0.53)            (0.12)               --
  In Excess of Net Realized
   Gain                                       --                --                --             (0.13)               --
                                          ------            ------            ------            ------            ------
    Total Distributions                       --             (3.35)            (0.62)            (0.39)               --
                                          ------            ------            ------            ------            ------
NET ASSET VALUE, END OF PERIOD  $          20.60   $         19.48   $         21.54   $         26.20   $         13.11
                                          ------            ------            ------            ------            ------
                                          ------            ------            ------            ------            ------
TOTAL RETURN                                5.75%             6.87%           (15.81)%          105.71%            (3.82)%
                                          ------            ------            ------            ------            ------
                                          ------            ------            ------            ------            ------
RATIOS AND SUPPLEMENTAL DATA:
Net Assets, End of Period
  (Thousands)                           $428,915          $314,884          $276,906          $287,136           $41,978
Ratio of Expenses to Average
  Net Assets (1)                            1.00%**            1.00%            1.00%             1.00%             1.00%**
Ratio of Net Investment Income
  to Average Net Assets (1)                 1.01%**            0.97%            0.52%             0.83%             0.61%**
Portfolio Turnover Rate                      %26               %42               %47               %18               %10
Average Commission Rate#                 $0.0117               N/A               N/A               N/A               N/A
- -----------------
(1) Effect of voluntary expense limitation during the period:
    Per share benefit to net
     investment income                     $0.02             $0.03             $0.04             $0.05             $0.02
   Ratios before expense
  limitation:
    Expenses to Average Net
     Assets                                 1.24%**            1.18%            1.20%             1.38%             2.02%**
    Net Investment Income
     (Loss) to Average Net
     Assets                                 0.77%**            0.79%            0.32%             0.45%            (0.41)%**
- ------------------------------------------------------------------------------------------------------------------------
 
<CAPTION>
 
                                                     PERIOD FROM
                                                   JULY 1, 1991*
                                     YEAR ENDED               TO
                                    OCTOBER 31,      OCTOBER 31,
                                           1992             1991
- ------------------------------------------------------------------------------------------------------------------------
 
<S>                             <C>               <C>
NET ASSET VALUE, BEGINNING OF
  PERIOD                        $          9.67   $        10.00
                                         ------           ------
INCOME FROM INVESTMENT
  OPERATIONS
  Net Investment Income (1)                0.14             0.03
  Net Realized and Unrealized
    Gain (Loss) on Investments             3.86            (0.36)
                                         ------           ------
    Total from Investment
     Operations                            4.00            (0.33)
                                         ------           ------
DISTRIBUTIONS
  Net Investment Income                   (0.04)              --
  In Excess of Net Investment
   Income                                    --               --
  Net Realized Gain                          --               --
  In Excess of Net Realized
   Gain                                      --               --
                                         ------           ------
    Total Distributions                   (0.04)              --
                                         ------           ------
NET ASSET VALUE, END OF PERIOD  $         13.63   $         9.67
                                         ------           ------
                                         ------           ------
TOTAL RETURN                              41.50%           (3.30)%
                                         ------           ------
                                         ------           ------
RATIOS AND SUPPLEMENTAL DATA:
Net Assets, End of Period
  (Thousands)                           $41,017          $10,719
Ratio of Expenses to Average
  Net Assets (1)                           1.00%            1.00%**
Ratio of Net Investment Income
  to Average Net Assets (1)                1.53%            1.13%**
Portfolio Turnover Rate                     %33              % 2
Average Commission Rate#                    N/A              N/A
- -----------------
(1) Effect of voluntary expens
    Per share benefit to net
     investment income                    $0.06            $0.02
   Ratios before expense
  limitation:
    Expenses to Average Net
     Assets                                1.63%            2.52%**
    Net Investment Income
     (Loss) to Average Net
     Assets                                0.90%           (0.39)%**
- ------------------------------------------------------------------------------------------------------------------------
 
</TABLE>
 
<TABLE>
<CAPTION>
                                                    CLASS B
                                                 -------------
                                                    JANUARY 2,
                                                    1996*** TO
                                                      JUNE 30,
                                                          1996
                                                   (UNAUDITED)
- --------------------------------------------------------------
<S>                                              <C>
NET ASSET VALUE, BEGINNING OF PERIOD             $       19.55
                                                        ------
INCOME FROM INVESTMENT OPERATIONS
  Net Investment Income (2)                               0.08
  Net Realized and Unrealized Gain (Loss) on
    Investments                                           0.96
                                                        ------
    Total from Investment Operations                      1.04
                                                        ------
NET ASSET VALUE, END OF PERIOD                   $       20.59
                                                        ------
                                                        ------
TOTAL RETURN                                             5.32%
                                                        ------
                                                        ------
RATIOS AND SUPPLEMENTAL DATA:
Net Assets, End of Period (Thousands)                  $13,479
Ratio of Expenses to Average Net Assets (2)               1.25%**
Ratio of Net Investment Income to Average Net
  Assets (2)                                              1.10%**
Portfolio Turnover Rate                                     26%
Average Commission Rate                                $0.0117
- -----------------
(2) Effect of voluntary expense limitation during the period:
    Per share benefit to net investment income           $0.02
   Ratios before expense limitation:
    Expenses to Average Net Assets                        1.52%**
    Net Investment Income to Average Net Assets           0.83%**
</TABLE>
 
- --------------------------------------------------------------------------------
 
  *Commencement of operations.
 **Annualized
 
***The Portfolio began offering Class B shares on January 2, 1996.
 
  +Amount is less than $0.01 per share.
 
 #Beginning with fiscal year 1996, the Portfolio is required to disclose the
  average commission rate per share it paid for portfolio trades, on which
  commissions were charged, during the period.
 
    The accompanying notes are an integral part of the financial statements.
 
- --------------------------------------------------------------------------------
                                      159
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
FINANCIAL HIGHLIGHTS
SELECTED PER SHARE DATA AND RATIOS:
- --------------------------------------------------------------------------------
 
THE EMERGING MARKETS PORTFOLIO
 
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>
                                                                            CLASS A
                                     --------------------------------------------------------------------------------------
                                         SIX MONTHS                                                              TWO MONTHS
                                              ENDED        YEAR ENDED        YEAR ENDED        YEAR ENDED             ENDED
                                      JUNE 30, 1996      DECEMBER 31,      DECEMBER 31,      DECEMBER 31,      DECEMBER 31,
                                        (UNAUDITED)              1995              1994              1993              1992
- ---------------------------------------------------------------------------------------------------------------------------
<S>                                  <C>              <C>               <C>               <C>               <C>
NET ASSET VALUE, BEGINNING OF
  PERIOD                             $        13.14   $         16.30   $         19.00   $         10.22   $         10.11
                                             ------            ------            ------            ------             -----
INCOME FROM INVESTMENT OPERATIONS
  Net Investment Income (Loss) (1)             0.11              0.08             (0.04)            (0.01)               --
  Net Realized and Unrealized Gain
   (Loss) on Investments                       2.56             (2.05)            (1.69)             8.79              0.11
                                             ------            ------            ------            ------             -----
    Total from Investment
     Operations                                2.67             (1.97)            (1.73)             8.78              0.11
                                             ------            ------            ------            ------             -----
DISTRIBUTIONS
  Net Investment Income                          --             (0.06)               --                --                --
  Net Realized Gain                              --             (1.13)            (0.97)               --                --
                                             ------            ------            ------            ------             -----
    Total Distributions                          --             (1.19)            (0.97)               --                --
                                             ------            ------            ------            ------             -----
NET ASSET VALUE, END OF PERIOD       $        15.81   $         13.14   $         16.30   $         19.00   $         10.22
                                             ------            ------            ------            ------             -----
                                             ------            ------            ------            ------             -----
TOTAL RETURN                                  20.32%           (12.77)%           (9.63)%           85.91%             1.09%
                                             ------            ------            ------            ------             -----
                                             ------            ------            ------            ------             -----
RATIOS AND SUPPLEMENTAL DATA:
Net Assets, End of Period
  (Thousands)                            $1,337,315          $876,591          $929,638          $735,352           $74,219
Ratio of Expenses to Average Net
  Assets (1)                                   1.75%**            1.72%            1.75%             1.75%             1.75%**
Ratio of Net Investment Income
  (Loss) to Average Net Assets (1)             1.68%**            0.60%           (0.26)%           (0.06)%           (0.33)%**
Portfolio Turnover Rate                         %25               %54               %32               %52               % 2
Average Commision Rate#                     $0.0009               N/A               N/A               N/A               N/A
- -----------------
(1) Effect of voluntary expense limitation during the period:
    Per share benefit to net
     investment income                          N/A               N/A               N/A             $0.01             $0.00
   Ratios before expense
   limitation:
    Expenses to Average Net Assets              N/A               N/A               N/A              1.79%             2.48%**
    Net Investment Loss to Average
     Net Assets                                 N/A               N/A               N/A             (0.10)%           (1.06)%**
- ---------------------------------------------------------------------------------------------------------------------------
 
<CAPTION>
 
                                          PERIOD FROM
                                        SEPTEMBER 25,
                                                1992*
                                       TO OCTOBER 31,
                                                 1992
- ---------------------------------------------------------------------------------------------------------------------------
 
<S>                                  <C>
NET ASSET VALUE, BEGINNING OF
  PERIOD                             $          10.00
                                               ------
INCOME FROM INVESTMENT OPERATIONS
  Net Investment Income (Loss) (1)                 --
  Net Realized and Unrealized Gain
   (Loss) on Investments                         0.11
                                               ------
    Total from Investment
     Operations                                  0.11
                                               ------
DISTRIBUTIONS
  Net Investment Income                            --
  Net Realized Gain                                --
                                               ------
    Total Distributions                            --
                                               ------
NET ASSET VALUE, END OF PERIOD       $          10.11
                                               ------
                                               ------
TOTAL RETURN                                     1.10%
                                               ------
                                               ------
RATIOS AND SUPPLEMENTAL DATA:
Net Assets, End of Period
  (Thousands)                                 $28,806
Ratio of Expenses to Average Net
  Assets (1)                                     1.75%**
Ratio of Net Investment Income
  (Loss) to Average Net Assets (1)              (0.53)%**
Portfolio Turnover Rate                           % 0
Average Commision Rate#                           N/A
- -----------------
(1) Effect of voluntary expense lim
    Per share benefit to net
     investment income                          $0.02
   Ratios before expense
   limitation:
    Expenses to Average Net Assets               4.82%**
    Net Investment Loss to Average
     Net Assets                                 (3.60)%**
- ---------------------------------------------------------------------------------------------------------------------------
 
</TABLE>
 
<TABLE>
<CAPTION>
                                                               CLASS B
                                                             ------------
                                                               JANUARY 2,
                                                                  1996***
                                                              TO JUNE 30,
                                                                     1996
                                                              (UNAUDITED)
- -----------------------------------------------------------------------
<S>                                                          <C>
NET ASSET VALUE, BEGINNING OF PERIOD                         $      13.25
                                                                   ------
INCOME FROM INVESTMENT OPERATIONS
  Net Investment Income (2)                                          0.07
  Net Realized and Unrealized Gain (Loss) on
   Investments                                                       2.47
                                                                   ------
    Total from Investment Operations                                 2.54
                                                                   ------
NET ASSET VALUE, END OF PERIOD                               $      15.79
                                                                   ------
                                                                   ------
TOTAL RETURN                                                        19.17%
                                                                   ------
                                                                   ------
RATIOS AND SUPPLEMENTAL DATA:
Net Assets, End of Period (Thousands)                             $14,801
Ratio of Expenses to Average Net Assets (2)                          2.00%**
Ratio of Net Investment Income (Loss) to Average Net Assets
  (2)                                                                1.56%**
Portfolio Turnover Rate                                                25%
Average Commision Rate                                            $0.0009
- -----------------
(2) Effect of voluntary expense limitation during the period:
    Per share benefit to net investment income                        N/A
   Ratios before expense limitation:
    Expenses to Average Net Assets                                    N/A
    Net Investment Loss to Average Net Assets                         N/A
</TABLE>
 
- --------------------------------------------------------------------------------
 
  *Commencement of operations.
 
 **Annualized
 
***The Portfolio began offering Class B shares on January 2, 1996.
 
 #Beginning with fiscal year 1996, the Portfolio is required to disclose the
  average commission rate per share it paid for portfolio trades, on which
  commissions were charged, during the period.
 
    The accompanying notes are an integral part of the financial statements.
 
- --------------------------------------------------------------------------------
                                      160
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
FINANCIAL HIGHLIGHTS
SELECTED PER SHARE DATA AND RATIOS:
- --------------------------------------------------------------------------------
 
THE EUROPEAN EQUITY PORTFOLIO
 
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>
                                                                                        CLASS A
                                                                   --------------------------------------------------
                                                                       SIX MONTHS
                                                                   ENDED JUNE 30,        YEAR ENDED        YEAR ENDED
                                                                             1996      DECEMBER 31,      DECEMBER 31,
                                                                      (UNAUDITED)              1995              1994
- ---------------------------------------------------------------------------------------------------------------------
<S>                                                                <C>              <C>               <C>
NET ASSET VALUE, BEGINNING OF PERIOD                               $        13.92   $         13.94   $         12.91
                                                                           ------            ------            ------
INCOME FROM INVESTMENT OPERATIONS
  Net Investment Income (1)                                                  0.18              0.14              0.08
  Net Realized and Unrealized Gain on Investments                            1.47              1.37              1.29
                                                                           ------            ------            ------
    Total from Investment Operations                                         1.65              1.51              1.37
                                                                           ------            ------            ------
DISTRIBUTIONS
  Net Investment Income                                                        --             (0.15)            (0.09)
  Net Realized Gain                                                            --             (1.38)            (0.25)
                                                                           ------            ------            ------
    Total Distributions                                                        --             (1.53)            (0.34)
                                                                           ------            ------            ------
NET ASSET VALUE, END OF PERIOD                                     $        15.57   $         13.92   $         13.94
                                                                           ------            ------            ------
                                                                           ------            ------            ------
TOTAL RETURN                                                                11.85%            11.85%            10.88%
                                                                           ------            ------            ------
                                                                           ------            ------            ------
RATIOS AND SUPPLEMENTAL DATA:
Net Assets, End of Period (Thousands)                                    $139,785           $69,583           $27,634
Ratio of Expenses to Average Net Assets (1)                                  1.00%**            1.00%            1.00%
Ratio of Net Investment Income to Average Net Assets (1)                     3.19%**            1.37%            0.87%
Portfolio Turnover Rate                                                       % 8               %13               %79
Average Commission Rate#                                                  $0.0218         N/A               N/A
- ---------------
(1) Effect of voluntary expense limitation during the period:
    Per share benefit to net investment income                              $0.01             $0.03             $0.06
   Ratios before expense limitation:
    Expenses to Average Net Assets                                           1.21%**            1.25%            1.62%
    Net Investment Income (Loss) to Average Net Assets                       2.98%**            1.12%            0.25%
- ---------------------------------------------------------------------------------------------------------------------
 
<CAPTION>
 
                                                                   PERIOD FROM APRIL 2,
                                                                      1993* TO DECEMBER
                                                                               31, 1993
- ---------------------------------------------------------------------------------------------------------------------
 
<S>                                                                <C>
NET ASSET VALUE, BEGINNING OF PERIOD                               $              10.00
                                                                                 ------
INCOME FROM INVESTMENT OPERATIONS
  Net Investment Income (1)                                                        0.08
  Net Realized and Unrealized Gain on Investments                                  2.83
                                                                                 ------
    Total from Investment Operations                                               2.91
                                                                                 ------
DISTRIBUTIONS
  Net Investment Income                                                              --
  Net Realized Gain                                                                  --
                                                                                 ------
    Total Distributions                                                              --
                                                                                 ------
NET ASSET VALUE, END OF PERIOD                                     $              12.91
                                                                                 ------
                                                                                 ------
TOTAL RETURN                                                                      29.10%
                                                                                 ------
                                                                                 ------
RATIOS AND SUPPLEMENTAL DATA:
Net Assets, End of Period (Thousands)                                           $12,681
Ratio of Expenses to Average Net Assets (1)                                        1.00%**
Ratio of Net Investment Income to Average Net Assets (1)                           1.23%**
Portfolio Turnover Rate                                                             %15
Average Commission Rate#                                                   N/A
- ---------------
(1) Effect of voluntary expense limitation during the period:
    Per share benefit to net investment income                                    $0.09
   Ratios before expense limitation:
    Expenses to Average Net Assets                                                 2.43%**
    Net Investment Income (Loss) to Average Net Assets                            (0.21)%**
- ---------------------------------------------------------------------------------------------------------------------
 
</TABLE>
 
<TABLE>
<CAPTION>
                                                                           CLASS B
                                                                         -----------
                                                                          JANUARY 2,
                                                                          1996*** TO
                                                                            JUNE 30,
                                                                                1996
                                                                         (UNAUDITED)
- -----------------------------------------------------------------------------------
<S>                                                                      <C>
NET ASSET VALUE, BEGINNING OF PERIOD                                     $     14.05
                                                                         -----------
INCOME FROM INVESTMENT OPERATIONS
  Net Investment Income (2)                                                     0.15
  Net Realized and Unrealized Gain on Investments                               1.36
                                                                         -----------
    Total from Investment Operations                                            1.51
                                                                         -----------
NET ASSET VALUE, END OF PERIOD                                           $     15.56
                                                                         -----------
                                                                         -----------
TOTAL RETURN                                                                   10.75%
                                                                         -----------
                                                                         -----------
RATIOS AND SUPPLEMENTAL DATA:
Net Assets, End of Period (Thousands)                                         $2,060
Ratio of Expenses to Average Net Assets (2)                                     1.25%**
Ratio of Net Investment Income to Average Net Assets (2)                        3.88%**
Portfolio Turnover Rate                                                            8%
Average Commission Rate                                                      $0.0218
- ---------------
(2) Effect of voluntary expense limitation during the period:
    Per share benefit to net investment income                                 $0.01
   Ratios before expense limitation:
    Expenses to Average Net Assets                                              1.46%**
    Net Investment Income (Loss) to Average Net Assets                          3.67%**
</TABLE>
 
- --------------------------------------------------------------------------------
 
  *Commencement of operations.
 
 **Annualized
 
***The Portfolio began offering Class B shares on January 2, 1996.
 
 #Beginning with fiscal year 1996, the Portfolio is required to disclose the
  average commission rate per share it paid for portfolio trades, on which
  commissions were charged, during the period.
 
    The accompanying notes are an integral part of the financial statements.
 
- --------------------------------------------------------------------------------
                                      161
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
FINANCIAL HIGHLIGHTS
SELECTED PER SHARE DATA AND RATIOS:
- --------------------------------------------------------------------------------
 
THE GLOBAL EQUITY PORTFOLIO
 
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>
                                                                         CLASS A
                           ---------------------------------------------------------------------------------------------------
                               SIX MONTHS
                                    ENDED                                                          TWO MONTHS      PERIOD FROM
                                 JUNE 30,       YEAR ENDED       YEAR ENDED       YEAR ENDED            ENDED   JULY 15, 1992*
                                     1996     DECEMBER 31,     DECEMBER 31,     DECEMBER 31,     DECEMBER 31,   TO OCTOBER 31,
                              (UNAUDITED)             1995             1994             1993             1992             1992
- ------------------------------------------------------------------------------------------------------------------------------
<S>                        <C>              <C>              <C>              <C>              <C>              <C>
NET ASSET VALUE,
 BEGINNING OF PERIOD       $        14.31   $        13.40   $        13.87   $         9.75   $         9.35   $        10.00
                                   ------           ------           ------           ------           ------           ------
INCOME FROM INVESTMENT
 OPERATIONS
  Net Investment Income
   (1)                               0.12             0.18             0.08             0.08             0.01             0.02
  Net Realized and
   Unrealized Gain (Loss)
   on Investments                    1.80             2.26             0.79             4.18             0.39            (0.67)
                                   ------           ------           ------           ------           ------           ------
    Total from Investment
     Operations                      1.92             2.44             0.87             4.26             0.40            (0.65)
                                   ------           ------           ------           ------           ------           ------
DISTRIBUTIONS
  Net Investment Income                --            (0.22)           (0.12)           (0.02)              --               --
  In Excess of Net
   Investment Income                   --               --               --            (0.03)              --               --
  Net Realized Gain                    --            (1.31)           (1.22)           (0.09)              --               --
                                   ------           ------           ------           ------           ------           ------
    Total Distributions                --            (1.53)           (1.34)           (0.14)              --               --
                                   ------           ------           ------           ------           ------           ------
NET ASSET VALUE, END OF
 PERIOD                    $        16.23   $        14.31   $        13.40   $        13.87   $         9.75   $         9.35
                                   ------           ------           ------           ------           ------           ------
                                   ------           ------           ------           ------           ------           ------
TOTAL RETURN                        13.42%           18.66%            6.95%           44.24%            4.28%           (6.50)%
                                   ------           ------           ------           ------           ------           ------
                                   ------           ------           ------           ------           ------           ------
RATIO AND SUPPLEMENTAL
 DATA:
Net Assets, End of Period
 (Thousands)                      $78,960          $91,675          $78,935          $19,918          $11,739          $11,257
Ratio of Expenses to
 Average Net Assets (1)              1.00%**           1.00%           1.00%            1.00%            1.00%**           1.00%**
Ratio of Net Investment
 Income to Average Net
 Assets (1)                          1.61%**           1.17%           0.87%            0.84%            0.69%**           1.00%**
Portfolio Turnover Rate                11%              28%              12%              42%               5%              10%
Average Commission Rate#          $0.0382              N/A              N/A              N/A              N/A              N/A
- -----------------
(1) Effect of voluntary
    expense limitation
    during the period:
    Per share benefit to
     net investment
     income                         $0.01            $0.02            $0.02            $0.01            $0.02            $0.08
  Ratios before expense
 limitation:
    Expenses to Average
     Net Assets                      1.19%**           1.13%           1.24%            1.66%            2.49%**           5.22%**
    Net Investment Income
     (Loss) to Average
     Net Assets                      1.42%**           1.04%           0.63%            0.18%           (0.80)%**          (3.22)%**
 
<CAPTION>
- ------------------------------------------------------------------------------------------------------------------------------
</TABLE>
 
<TABLE>
<CAPTION>
<S>                        <C>
                              CLASS B
                           --------------
                               JANUARY 2,
                               1996*** TO
                                 JUNE 30,
                                     1996
                              (UNAUDITED)
- -----------------------------------------
NET ASSET VALUE,
 BEGINNING OF PERIOD       $        14.36
                                   ------
INCOME FROM INVESTMENT
 OPERATIONS
  Net Investment Income
   (2)                               0.10
  Net Realized and
   Unrealized Gain (Loss)
   on Investments                    1.75
                                   ------
    Total from Investment
     Operations                      1.85
                                   ------
NET ASSET VALUE, END OF
 PERIOD                    $        16.21
                                   ------
                                   ------
TOTAL RETURN                        12.88%
                                   ------
                                   ------
RATIO AND SUPPLEMENTAL
 DATA:
Net Assets, End of Period
 (Thousands)                       $1,908
Ratio of Expenses to
 Average Net Assets (2)              1.25%**
Ratio of Net Investment
 Income to Average Net
 Assets (2)                          1.94%**
Portfolio Turnover Rate                11%
Average Commission Rate           $0.0382
- -----------------
(2) Effect of voluntary
    expense limitation
    during the period:
    Per share benefit to
     net investment
     income                         $0.01
  Ratios before expense
 limitation:
    Expenses to Average
     Net Assets                      1.43%**
    Net Investment Income
     to Average Net
     Assets                          1.76%**
</TABLE>
 
- --------------------------------------------------------------------------------
 
  *Commencement of operations.
 
 **Annualized
 
***The Portfolio began offering Class B shares on January 2, 1996.
 
 #Beginning with fiscal year 1996, the Portfolio is required to disclose the
  average commission rate per share it paid for portfolio trades, on which
  commissions were charged, during the period.
 
    The accompanying notes are an integral part of the financial statements.
 
- --------------------------------------------------------------------------------
                                      162
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
FINANCIAL HIGHLIGHTS
SELECTED PER SHARE DATA AND RATIOS:
- --------------------------------------------------------------------------------
 
THE GOLD PORTFOLIO
 
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>
                                                                       CLASS A
                                               -------------------------------------------------------
                                                    SIX MONTHS
                                                         ENDED                             PERIOD FROM
                                                      JUNE 30,        YEAR ENDED     FEBRUARY 1, 1994*
                                                          1996      DECEMBER 31,       TO DECEMBER 31,
                                                   (UNAUDITED)              1995                  1994
- ------------------------------------------------------------------------------------------------------
<S>                                            <C>               <C>               <C>
NET ASSET VALUE, BEGINNING OF PERIOD           $          8.55   $          9.13   $             10.00
                                                        ------            ------                ------
INCOME FROM INVESTMENT OPERATIONS
  Net Investment Income (Loss) (1)                        0.01             (0.07)                 0.03
  Net Realized and Unrealized Gain (Loss) on
   Investments++                                          2.39              1.22                 (0.88)
                                                        ------            ------                ------
    Total from Investment Operations                      2.40              1.15                 (0.85)
                                                        ------            ------                ------
DISTRIBUTIONS
  Net Investment Income                                     --             (0.01)                (0.02)
  Net Realized Gain                                         --             (1.72)                   --
                                                        ------            ------                ------
    Total Distributions                                     --             (1.73)                (0.02)
                                                        ------            ------                ------
NET ASSET VALUE, END OF PERIOD                 $         10.95   $          8.55   $              9.13
                                                        ------            ------                ------
                                                        ------            ------                ------
TOTAL RETURN                                             28.07%            13.21%                (8.49)%
                                                        ------            ------                ------
                                                        ------            ------                ------
RATIO AND SUPPLEMENTAL DATA:
Net Assets, End of Period (Thousands)                  $35,688            $7,409               $30,243
Ratio of Expenses to Average Net Assets (1)               1.25%**            1.25%                1.25%**
Ratio of Net Investment Income (Loss) to
 Average Net Assets (1)                                   0.26%**           (0.31)%                0.41%**
Portfolio Turnover Rate                                     21%               47%                   56%
Average Commission Rate#                               $0.0241               N/A                   N/A
- -----------------
(1) Effect of voluntary expense limitation
 during the period:
    Per share benefit to net investment
     income                                              $0.02             $0.11                 $0.04
   Ratios before expense limitation:
    Expenses to Average Net Assets                        1.84%**            1.76%                1.72%**
    Net Investment Loss to Average Net Assets            (0.33)%**           (0.82)%               (0.06)%**
 
<CAPTION>
- ------------------------------------------------------------------------------------------------------
</TABLE>
 
<TABLE>
<CAPTION>
<S>                                            <C>
                                                   CLASS B
                                               ---------------
                                                    JANUARY 2,
                                                    1996*** TO
                                                      JUNE 30,
                                                          1996
                                                   (UNAUDITED)
- --------------------------------------------------------------
NET ASSET VALUE, BEGINNING OF PERIOD           $          8.81
                                                        ------
INCOME FROM INVESTMENT OPERATIONS
  Net Investment Income (Loss) (2)                          --
  Net Realized and Unrealized Gain (Loss) on
   Investments++                                          2.13
                                                        ------
    Total from Investment Operations                      2.13
                                                        ------
NET ASSET VALUE, END OF PERIOD                 $         10.94
                                                        ------
                                                        ------
TOTAL RETURN                                             24.18%
                                                        ------
                                                        ------
RATIO AND SUPPLEMENTAL DATA:
Net Assets, End of Period (Thousands)          $         1,027
Ratio of Expenses to Average Net Assets (2)               1.50%**
Ratio of Net Investment Income (Loss) to
 Average Net Assets (2)                                  (0.16)%**
Portfolio Turnover Rate                                     21%
Average Commission Rate                                $0.0241
- -----------------
(2) Effect of voluntary expense limitation
 during the period:
    Per share benefit to net investment
     income                                              $0.01
   Ratios before expense limitation:
    Expenses to Average Net Assets                        2.06%**
    Net Investment Loss to Average Net Assets            (0.72)%**
</TABLE>
 
- --------------------------------------------------------------------------------
 
  *Commencement of operations.
 
 **Annualized
 
***The Portfolio began offering Class B shares on January 2, 1996.
 
 ++The amount shown for the six months ended June 30, 1996 for a share
   outstanding throughout the period does not agree with the amount of aggregate
   net losses on investments because of the timing of sales and repurchases of
   the Portfolio shares in relation to fluctuating market value of the
   investments in the Portfolio.
 
 #Beginning with fiscal year 1996, the Portfolio is required to disclose the
  average commission rate per share it paid for portfolio trades, on which
  commissions were charged, during the period.
 
    The accompanying notes are an integral part of the financial statements.
 
- --------------------------------------------------------------------------------
                                      163
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
FINANCIAL HIGHLIGHTS
SELECTED PER SHARE DATA AND RATIOS:
- --------------------------------------------------------------------------------
 
THE INTERNATIONAL EQUITY PORTFOLIO
 
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>
                                                                                  CLASS A
                                          ---------------------------------------------------------------------------------------
                                               SIX MONTHS
                                                    ENDED                                                              TWO MONTHS
                                                 JUNE 30,        YEAR ENDED        YEAR ENDED        YEAR ENDED             ENDED
                                                     1996      DECEMBER 31,      DECEMBER 31,      DECEMBER 31,      DECEMBER 31,
                                              (UNAUDITED)              1995              1994              1993              1992
- ---------------------------------------------------------------------------------------------------------------------------------
<S>                                       <C>               <C>               <C>               <C>               <C>
NET ASSET VALUE, BEGINNING OF PERIOD      $         15.15   $         15.34   $         14.09   $          9.98   $          9.83
                                                   ------            ------            ------            ------             -----
INCOME FROM INVESTMENT OPERATIONS
  Net Investment Income (1)                          0.17              0.16              0.16              0.15              0.01
  Net Realized and Unrealized Gain
   (Loss) on Investments                             1.55              1.55              1.54              4.36              0.14
                                                   ------            ------            ------            ------             -----
    Total from Investment Operations                 1.72              1.71              1.70              4.51              0.15
                                                   ------            ------            ------            ------             -----
DISTRIBUTIONS
  Net Investment Income                                --             (0.06)            (0.18)            (0.01)               --
  In Excess of Net Investment Income                   --                --                --             (0.13)               --
  Net Realized Gain                                    --             (1.84)            (0.27)            (0.26)               --
                                                   ------            ------            ------            ------             -----
    Total Distributions                                --             (1.90)            (0.45)            (0.40)               --
                                                   ------            ------            ------            ------             -----
NET ASSET VALUE, END OF PERIOD            $         16.87   $         15.15   $         15.34   $         14.09   $          9.98
                                                   ------            ------            ------            ------             -----
                                                   ------            ------            ------            ------             -----
TOTAL RETURN                                        11.35%            11.77%            12.39%            46.50%             1.53%
                                                   ------            ------            ------            ------             -----
                                                   ------            ------            ------            ------             -----
RATIOS AND SUPPLEMENTAL DATA:
Net Assets, End of Period (Thousands)          $2,027,199        $1,598,530        $1,304,770          $947,045          $510,727
Ratio of Expenses to Average Net Assets
 (1)                                                 1.00%**            1.00%            1.00%             1.00%             1.00%**
Ratio of Net Investment Income to
 Average Net Assets (1)                              2.38%**            1.38%            1.12%             1.25%             0.68%**
Portfolio Turnover Rate                                 9%               27%               16%               23%                5%
Average Commission Rate#                          $0.0225               N/A               N/A               N/A               N/A
- -----------------
(1) Effect of voluntary expense limitation during
   the period:
    Per share benefit to net investment
     income                                         $0.00+           $0.003            $0.004             $0.01             $0.00
   Ratios before expense limitation:
    Expenses to Average Net Assets                   1.04%**            1.03%            1.03%             1.06%             1.14%**
    Net Investment Income to Average Net
     Assets                                          2.34%**            1.35%            1.09%             1.19%             0.54%**
 
<CAPTION>
- ---------------------------------------------------------------------------------------------------------------------------------
 
<CAPTION>
 
                                              YEAR ENDED       YEAR ENDED
                                             OCTOBER 31,      OCTOBER 31,
                                                    1992             1991
- ----------------------------------------------------------------------------------------
<S>                                       <C>              <C>
NET ASSET VALUE, BEGINNING OF PERIOD      $        10.52   $        10.05
                                                  ------           ------
INCOME FROM INVESTMENT OPERATIONS
  Net Investment Income (1)                         0.12             0.12
  Net Realized and Unrealized Gain
   (Loss) on Investments                           (0.59)            0.58
                                                  ------           ------
    Total from Investment Operations               (0.47)            0.70
                                                  ------           ------
DISTRIBUTIONS
  Net Investment Income                            (0.17)           (0.15)
  In Excess of Net Investment Income                  --               --
  Net Realized Gain                                (0.05)           (0.08)
                                                  ------           ------
    Total Distributions                            (0.22)           (0.23)
                                                  ------           ------
NET ASSET VALUE, END OF PERIOD            $         9.83   $        10.52
                                                  ------           ------
                                                  ------           ------
TOTAL RETURN                                       (4.56)%           7.17%
                                                  ------           ------
                                                  ------           ------
RATIOS AND SUPPLEMENTAL DATA:
Net Assets, End of Period (Thousands)           $486,836         $283,776
Ratio of Expenses to Average Net Assets
 (1)                                                1.00%            1.00%
Ratio of Net Investment Income to
 Average Net Assets (1)                             1.46%            2.27%
Portfolio Turnover Rate                               12%              22%
Average Commission Rate#                             N/A              N/A
- -----------------
(1) Effect of voluntary expense limitati
   the period:
    Per share benefit to net investment
     income                                        $0.00            $0.01
   Ratios before expense limitation:
    Expenses to Average Net Assets                  1.02%            1.09%
    Net Investment Income to Average Net
     Assets                                         1.44%            2.18%
- --------------------------------------------------------------------------------------------------------
</TABLE>
 
<TABLE>
<CAPTION>
<S>                                       <C>
                                              CLASS B
                                          ---------------
                                               JANUARY 2,
                                               1996*** TO
                                            JUNE 30, 1996
                                              (UNAUDITED)
- ---------------------------------------------------------
NET ASSET VALUE, BEGINNING OF PERIOD               $15.24
                                                   ------
INCOME FROM INVESTMENT OPERATIONS
  Net Investment Income (2)                          0.17
  Net Realized and Unrealized Gain
   (Loss) on Investments                             1.44
                                                   ------
    Total from Investment Operations                 1.61
                                                   ------
NET ASSET VALUE, END OF PERIOD            $         16.85
                                                   ------
TOTAL RETURN                                        10.56%
                                                   ------
                                                   ------
RATIOS AND SUPPLEMENTAL DATA:
Net Assets, End of Period (Thousands)     $         4,798
Ratio of Expenses to Average Net Assets
 (2)                                                 1.25%**
Ratio of Net Investment Income to
 Average Net Assets (2)                              3.32%**
Portfolio Turnover Rate                                9%
Average Commission Rate                           $0.0225
- -----------------
(2) Effect of voluntary expense limitation during
   the period:
    Per share benefit to net investment
     income                                         $0.00+
   Ratios before expense limitation:
    Expenses to Average Net Assets                   1.28%**
    Net Investment Income to Average Net
     Assets                                          3.29%**
</TABLE>
 
- --------------------------------------------------------------------------------
 
 **Annualized
 
***The Portfolio began offering Class B shares on January 2, 1996.
 
  +Amount is less than $0.01 per share.
 
 #Beginning with fiscal year 1996, the Portfolio is required to disclose the
  average commission rate per share it paid for portfolio trades, on which
  commissions were charged, during the period.
 
    The accompanying notes are an integral part of the financial statements.
 
- --------------------------------------------------------------------------------
                                      164
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
FINANCIAL HIGHLIGHTS
SELECTED PER SHARE DATA AND RATIOS:
- --------------------------------------------------------------------------------
 
THE INTERNATIONAL MAGNUM PORTFOLIO
 
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>
                                                    CLASS A
                                               --------------
                                                     PERIOD FROM
                                                 MARCH 15, 1996*
                                                     TO JUNE 30,
                                                            1996
                                                     (UNAUDITED)
- ----------------------------------------------------------------
<S>                                            <C>
NET ASSET VALUE, BEGINNING OF PERIOD           $           10.00
                                                          ------
INCOME FROM INVESTMENT OPERATIONS
  Net Investment Income (1)                                 0.02
  Net Realized and Unrealized Gain on
   Investments                                              0.42
                                                          ------
    Total from Investment Operations                        0.44
                                                          ------
NET ASSET VALUE, END OF PERIOD                 $           10.44
                                                          ------
                                                          ------
TOTAL RETURN                                               4.40%
                                                          ------
                                                          ------
RATIOS AND SUPPLEMENTAL DATA:
Net Assets, End of Period (Thousands)                    $61,738
Ratio of Expenses to Average Net Assets (1)                 1.00%**
Ratio of Net Investment Income to Average Net
 Assets (1)                                                 2.07%**
Portfolio Turnover Rate                                        2%
Average Commission Rate                                  $0.0425
- ---------------
(1) Effect of voluntary expense limitation
 during the period:
    Per share benefit to net investment
     income                                                $0.01
  Ratios before expense limitation:
    Expenses to Average Net Assets                          2.09%**
    Net Investment Income to Average Net
     Assets                                                 0.98%**
 
<CAPTION>
- ----------------------------------------------------------------
</TABLE>
 
<TABLE>
<CAPTION>
<S>                                            <C>
                                                    CLASS B
                                               -----------------
                                                     PERIOD FROM
                                                 MARCH 15, 1996*
                                                     TO JUNE 30,
                                                            1996
                                                     (UNAUDITED)
- ----------------------------------------------------------------
NET ASSET VALUE, BEGINNING OF PERIOD           $           10.00
                                                          ------
INCOME FROM INVESTMENT OPERATIONS
  Net Investment Income (2)                                 0.03
  Net Realized and Unrealized Gain on
   Investments                                              0.39
                                                          ------
    Total from Investment Operations                        0.42
                                                          ------
NET ASSET VALUE, END OF PERIOD                 $           10.42
                                                          ------
                                                          ------
TOTAL RETURN                                                4.20%
                                                          ------
                                                          ------
RATIOS AND SUPPLEMENTAL DATA:
Net Assets, End of Period (Thousands)          $           1,630
Ratio of Expenses to Average Net Assets (2)                 1.25%**
Ratio of Net Investment Income to Average Net
 Assets (2)                                                 2.25%**
Portfolio Turnover Rate                                        2%
Average Commission Rate                                  $0.0425
- ---------------
(2) Effect of voluntary expense limitation
 during the period:
    Per share benefit to net investment
     income                                                $0.02
   Ratios before expense limitation:
    Expenses to Average Net Assets                          2.84%**
    Net Investment Income to Average Net
     Assets                                                 0.66%**
</TABLE>
 
- --------------------------------------------------------------------------------
 
 *Commencement of operations.
 
**Annualized
 
    The accompanying notes are an integral part of the financial statements.
 
- --------------------------------------------------------------------------------
                                      165
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
FINANCIAL HIGHLIGHTS
SELECTED PER SHARE DATA AND RATIOS:
- --------------------------------------------------------------------------------
 
THE INTERNATIONAL SMALL CAP PORTFOLIO
 
- --------------------------------------------------------------------------------
 
<TABLE>
<CAPTION>
                                          SIX MONTHS                                                             PERIOD FROM
                                               ENDED                                                            DECEMBER 15,
                                            JUNE 30,        YEAR ENDED        YEAR ENDED        YEAR ENDED          1992* TO
                                                1996      DECEMBER 31,      DECEMBER 31,      DECEMBER 31,      DECEMBER 31,
                                         (UNAUDITED)              1995              1994            1993++              1992
<S>                                  <C>               <C>               <C>               <C>               <C>
- ----------------------------------------------------------------------------------------------------------------------------
NET ASSET VALUE, BEGINNING OF
 PERIOD                              $         14.94   $         15.15   $         14.64   $         10.09   $         10.00
                                              ------            ------            ------            ------            ------
INCOME FROM INVESTMENT OPERATIONS
  Net Investment Income (1)                     0.11              0.24              0.14              0.09              0.01
  Net Realized and Unrealized Gain
   on Investments (2)                           2.23              0.15              0.62              4.48              0.08
                                              ------            ------            ------            ------            ------
    Total from Investment
     Operations                                 2.34              0.39              0.76              4.57              0.09
                                              ------            ------            ------            ------            ------
DISTRIBUTIONS
  Net Investment Income                           --             (0.23)            (0.03)             0.00                --
  In Excess of Net Investment
   Income                                         --                --                --             (0.02)               --
  Net Realized Gain                               --             (0.37)            (0.22)               --                --
                                              ------            ------            ------            ------            ------
    Total Distributions                           --             (0.60)            (0.25)            (0.02)               --
                                              ------            ------            ------            ------            ------
NET ASSET VALUE, END OF PERIOD       $         17.28   $         14.94   $         15.15   $         14.64   $         10.09
                                              ------            ------            ------            ------            ------
                                              ------            ------            ------            ------            ------
TOTAL RETURN                                   15.66%             2.60%             5.25%            45.34%             0.90%
                                              ------            ------            ------            ------            ------
                                              ------            ------            ------            ------            ------
RATIO AND SUPPLEMENTAL DATA:
Net Assets, End of Period
 (Thousands)                                $232,463          $198,669          $160,101           $52,834            $3,824
Ratio of Expenses to Average Net
 Assets (1)                                     1.15%**            1.15%            1.15%             1.15%             1.15%**
Ratio of Net Investment Income to
 Average Net Assets (1)                         1.40%**            1.72%            1.18%             0.66%             1.37%**
Portfolio Turnover Rate                           19%               24%                8%               14%                0%
Average Commission Rate#                     $0.0145               N/A               N/A               N/A               N/A
- ---------------
(1) Effect of voluntary expense limitation during the period:
    Per share benefit to net
     investment income                         $0.01             $0.01             $0.02             $0.10             $0.16
   Ratios before expense
 limitation:
    Expenses to Average Net Assets              1.24%**            1.24%            1.29%             1.86%            21.67%**
    Net Investment Income (Loss) to
     Average Net Assets                         1.31%**            1.63%            1.04%            (0.05)%          (19.15)%**
(2) Includes a 1% transaction fee on purchases and redemptions of capital shares.
</TABLE>
 
- --------------------------------------------------------------------------------
 
  *Commencement of operations.
 
 **Annualized
 
 ++Per share amounts for the year ended December 31, 1993 are based on average
   outstanding shares.
 
 #Beginning with fiscal year 1996, the Portfolio is required to disclose the
  average commission rate per share it paid for portfolio trades, on which
  commissions were charged, during the period.
 
    The accompanying notes are an integral part of the financial statements.
 
- --------------------------------------------------------------------------------
                                      166
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
FINANCIAL HIGHLIGHTS
SELECTED PER SHARE DATA AND RATIOS:
- --------------------------------------------------------------------------------
 
THE JAPANESE EQUITY PORTFOLIO
 
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>
                                                                           CLASS A
                                                    ------------------------------------------------------
                                                            SIX MONTHS
                                                                 ENDED                         PERIOD FROM
                                                              JUNE 30,        YEAR ENDED   APRIL 25, 1994*
                                                                  1996      DECEMBER 31,   TO DECEMBER 31,
                                                           (UNAUDITED)              1995              1994
- ----------------------------------------------------------------------------------------------------------
<S>                                                 <C>                  <C>               <C>
NET ASSET VALUE, BEGINNING OF PERIOD                $             9.27   $          9.83   $         10.00
                                                                ------            ------            ------
INCOME FROM INVESTMENT OPERATIONS
  Net Investment Income (Loss) (1)                                0.10              0.04             (0.01)
  Net Realized and Unrealized Gain (Loss) on
   Investments++                                                  0.62             (0.40)            (0.16)
                                                                ------            ------            ------
    Total from Investment Operations                              0.72             (0.36)            (0.17)
                                                                ------            ------            ------
DISTRIBUTIONS
  In Excess of Net Investment Income                                --             (0.20)               --
                                                                ------            ------            ------
NET ASSET VALUE, END OF PERIOD                      $             9.99   $          9.27   $          9.83
                                                                ------            ------            ------
                                                                ------            ------            ------
TOTAL RETURN                                                      7.77%            (3.64)%           (1.70)%
                                                                ------            ------            ------
                                                                ------            ------            ------
RATIOS AND SUPPLEMENTAL DATA:
Net Assets, End of Period (Thousands)                         $225,965          $119,278           $50,332
Ratio of Expenses to Average Net Assets (1)                       1.00%**            1.00%            1.00%**
Ratio of Net Investment Income (Loss) to Average
 Net Assets (1)                                                   0.14%**            0.15%           (0.10)%**
Portfolio Turnover Rate                                              4%               52%                1%
Average Commission Rate#                                       $0.0599               N/A               N/A
- ---------------
(1) Effect of voluntary expense limitation during
 the period:
    Per share benefit to net investment income                   $0.07             $0.06             $0.02
   Ratios before expense limitation:
    Expenses to Average Net Assets                                1.09%**            1.20%            1.27%**
    Net Investment Income (Loss) to Average Net
     Assets                                                       0.05%**           (0.05)%           (0.37)%**
 
<CAPTION>
- ----------------------------------------------------------------------------------------------------------
</TABLE>
 
<TABLE>
<CAPTION>
<S>                                                 <C>
                                                         CLASS B
                                                    -----------------
                                                           JANUARY 2,
                                                           1996*** TO
                                                             JUNE 30,
                                                                 1996
                                                          (UNAUDITED)
- ---------------------------------------------------------------------
NET ASSET VALUE, BEGINNING OF PERIOD                $            9.25
                                                               ------
INCOME FROM INVESTMENT OPERATIONS
  Net Investment Income (Loss) (2)                                 --
  Net Realized and Unrealized Gain on Investments                0.72
                                                               ------
    Total from Investment Operations                             0.72
                                                               ------
NET ASSET VALUE, END OF PERIOD                      $            9.97
                                                               ------
                                                               ------
TOTAL RETURN                                                     7.78%
                                                               ------
                                                               ------
RATIOS AND SUPPLEMENTAL DATA:
Net Assets, End of Period (Thousands)                          $5,489
Ratio of Expenses to Average Net Assets (2)                      1.25%**
Ratio of Net Investment Loss to Average Net Assets
 (2)                                                            (0.01)%**
Portfolio Turnover Rate                                             4%
Average Commission Rate                                       $0.0599
- ---------------
(2) Effect of voluntary expense limitation during
    the period:
    Per share benefit to net investment income                  $0.00+
   Ratios before expense limitation:
    Expenses to Average Net Assets                               1.34%**
    Net Investment Loss to Average Net Assets                   (0.10)%**
</TABLE>
 
- --------------------------------------------------------------------------------
  *Commencement of operations.
 **Annualized
***The Portfolio began offering Class B shares on January 2, 1996.
  +Amount is less than $0.01 per share.
 ++The amount shown for the year ended December 31, 1995 for a share outstanding
   throughout the period does not agree with the amount of aggregate net gains
   on investments for the year because of the timing of sales and repurchases of
   the Portfolio shares in relation to fluctuating market value of the
   investments in the Portfolio.
 #Beginning with fiscal year 1996, the Portfolio is required to disclose the
  average commission rate per share it paid for portfolio trades, on which
  commissions were charged, during the period.
 
    The accompanying notes are an integral part of the financial statements.
 
- --------------------------------------------------------------------------------
                                      167
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
FINANCIAL HIGHLIGHTS
SELECTED PER SHARE DATA AND RATIOS:
- --------------------------------------------------------------------------------
 
THE LATIN AMERICAN PORTFOLIO
 
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>
                                                                  CLASS A
                                                    -----------------------------------
                                                          SIX MONTHS        PERIOD FROM
                                                               ENDED        JANUARY 18,
                                                            JUNE 30,              1995*
                                                                1996    TO DECEMBER 31,
                                                         (UNAUDITED)               1995
<S>                                                 <C>                <C>
- ---------------------------------------------------------------------------------------
NET ASSET VALUE, BEGINNING OF PERIOD                $           9.06   $          10.00
                                                              ------             ------
INCOME FROM INVESTMENT OPERATIONS
  Net Investment Income (1)                                     0.12               0.05
  Net Realized and Unrealized Gain (Loss) on
   Investments                                                  3.01              (0.92)
                                                              ------             ------
    Total from Investment Operations                            3.13              (0.87)
                                                              ------             ------
DISTRIBUTIONS
  Net Investment Income                                           --              (0.04)
  Return of Capital                                               --              (0.03)
                                                              ------             ------
    Total Distributions                                           --              (0.07)
                                                              ------             ------
NET ASSET VALUE, END OF PERIOD                      $          12.19   $           9.06
                                                              ------             ------
                                                              ------             ------
TOTAL RETURN                                                   34.55%             (8.68)%
                                                              ------             ------
                                                              ------             ------
RATIOS AND SUPPLEMENTAL DATA:
Net Assets, End of Period (Thousands)                        $27,055            $15,376
Ratio of Expenses to Average Net Assets (1)                     1.70%**             1.70%**
Ratio of Net Investment Income to Average Net
 Assets (1)                                                     2.52%**             0.62%**
Portfolio Turnover Rate                                           67%               137%
Average Commission Rate#                                     $0.0003                N/A
- ---------------
 (1) Effect of voluntary expense limitation during
 the period:
    Per share benefit to net investment income                 $0.02              $0.09
   Ratios before expense limitation:
    Expenses to Average Net Assets                              2.14%**             3.13%**
    Net Investment Income (Loss) to Average Net
     Assets                                                     2.08%**            (0.48)%**
 
<CAPTION>
- ---------------------------------------------------------------------------------------
</TABLE>
 
<TABLE>
<CAPTION>
<S>                                                 <C>
                                                        CLASS B
                                                    ---------------
                                                         JANUARY 2,
                                                         1996*** TO
                                                           JUNE 30,
                                                               1996
                                                        (UNAUDITED)
- -------------------------------------------------------------------
NET ASSET VALUE, BEGINNING OF PERIOD                $          9.44
                                                             ------
INCOME FROM INVESTMENT OPERATIONS
  Net Investment Income (2)                                    0.10
  Net Realized and Unrealized Gain on Investments              2.63
                                                             ------
    Total from Investment Operations                           2.73
                                                             ------
NET ASSET VALUE, END OF PERIOD                      $         12.17
                                                             ------
                                                             ------
TOTAL RETURN                                                  28.92%
                                                             ------
                                                             ------
RATIOS AND SUPPLEMENTAL DATA:
Net Assets, End of Period (Thousands)                          $817
Ratio of Expenses to Average Net Assets (2)                    1.95%**
Ratio of Net Investment Income to Average Net
 Assets (2)                                                    2.80%**
Portfolio Turnover Rate                                          67%
Average Commission Rate                                     $0.0003
- ---------------
 (2) Effect of voluntary expense limitation during
 the period:
    Per share benefit to net investment income                $0.01
   Ratios before expense limitation:
    Expenses to Average Net Assets                             2.37%**
    Net Investment Income to Average Net Assets                2.38%**
</TABLE>
 
- --------------------------------------------------------------------------------
 
  *Commencement of operations.
 
 **Annualized
 
***The Portfolio began offering Class B shares on January 2, 1996.
 
 #Beginning with fiscal year 1996, the Portfolio is required to disclose the
  average commission rate per share it paid for portfolio trades, on which
  commissions were charged, during the period.
 
    The accompanying notes are an integral part of the financial statements.
 
- --------------------------------------------------------------------------------
                                      168
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
FINANCIAL HIGHLIGHTS
SELECTED PER SHARE DATA AND RATIOS:
- --------------------------------------------------------------------------------
 
THE AGGRESSIVE EQUITY PORTFOLIO
 
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>
                                                                  CLASS A
                                                    -----------------------------------
                                                          SIX MONTHS        PERIOD FROM
                                                               ENDED     MARCH 8, 1995*
                                                            JUNE 30,                 TO
                                                                1996       DECEMBER 31,
                                                         (UNAUDITED)               1995
- ---------------------------------------------------------------------------------------
<S>                                                 <C>                <C>
NET ASSET VALUE, BEGINNING OF PERIOD                $          12.17   $          10.00
                                                             -------            -------
INCOME FROM INVESTMENT OPERATIONS
  Net Investment Income (1)                                     0.10               0.15
  Net Realized and Unrealized Gain on Investments               2.65               3.95
                                                             -------            -------
    Total from Investment Operations                            2.75               4.10
                                                             -------            -------
DISTRIBUTIONS
  Net Investment Income                                        (0.05)             (0.15)
  Net Realized Gain                                               --              (1.78)
                                                             -------            -------
    Total Distributions                                        (0.05)             (1.93)
                                                             -------            -------
NET ASSET VALUE, END OF PERIOD                      $          14.87   $          12.17
                                                             -------            -------
                                                             -------            -------
TOTAL RETURN                                                   22.63%             41.25%
                                                             -------            -------
                                                             -------            -------
RATIOS AND SUPPLEMENTAL DATA:
Net Assets, End of Period (Thousands)                        $42,760            $28,548
Ratio of Expenses to Average Net Assets (1)                     1.00%**             1.00%**
Ratio of Net Investment Income to Average Net
 Assets (1)                                                     1.58%**             1.64%**
Portfolio Turnover Rate                                          211%               309%
Average Commission Rate#                                     $0.0521                N/A
- -----------------
(1) Effect of voluntary expense limitation during
 the period:
    Per share benefit to net investment income                 $0.02              $0.06
   Ratios before expense limitation:
    Expenses to Average Net Assets                              1.29%**             1.59%**
    Net Investment Income to Average Net Assets                 1.29%**             1.05%**
 
<CAPTION>
- ---------------------------------------------------------------------------------------
</TABLE>
 
<TABLE>
<CAPTION>
<S>                                                 <C>
                                                        CLASS B
                                                    ---------------
                                                         JANUARY 2,
                                                         1996*** TO
                                                           JUNE 30,
                                                               1996
                                                        (UNAUDITED)
- -------------------------------------------------------------------
NET ASSET VALUE, BEGINNING OF PERIOD                $         12.25
                                                            -------
INCOME FROM INVESTMENT OPERATIONS
  Net Investment Income (2)                                    0.07
  Net Realized and Unrealized Gain on Investments              2.59
                                                            -------
    Total from Investment Operations                           2.66
                                                            -------
DISTRIBUTIONS
  Net Investment Income                                       (0.05)
                                                            -------
NET ASSET VALUE, END OF PERIOD                      $         14.86
                                                            -------
                                                            -------
TOTAL RETURN                                                  21.75%
                                                            -------
                                                            -------
RATIOS AND SUPPLEMENTAL DATA:
Net Assets, End of Period (Thousands)                        $5,571
Ratio of Expenses to Average Net Assets (2)                    1.25%**
Ratio of Net Investment Income to Average Net
 Assets (2)                                                    1.51%**
Portfolio Turnover Rate                                         211%
Average Commission Rate                                     $0.0521
- -----------------
(2) Effect of voluntary expense limitation during
    the period:
    Per share benefit to net investment income      $          0.01
   Ratios before expense limitation:
    Expenses to Average Net Assets                             1.48%**
    Net Investment Income to Average Net Assets                1.28%**
</TABLE>
 
- --------------------------------------------------------------------------------
 
  *Commencement of operations.
 
 **Annualized
 
***The Portfolio began offering Class B shares on January 2, 1996.
 
 #Beginning with fiscal year 1996, the Portfolio is required to disclose the
  average commission rate per share it paid for portfolio trades, on which
  commissions were charged, during the period.
 
    The accompanying notes are an integral part of the financial statements.
 
- --------------------------------------------------------------------------------
                                      169
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
FINANCIAL HIGHLIGHTS
SELECTED PER SHARE DATA AND RATIOS:
- --------------------------------------------------------------------------------
 
THE EMERGING GROWTH PORTFOLIO
 
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>
                                                                     CLASS A
                      ------------------------------------------------------------------------------------------------------
                          SIX MONTHS
                               ENDED                                                             TWO MONTHS
                            JUNE 30,       YEAR ENDED        YEAR ENDED        YEAR ENDED             ENDED       YEAR ENDED
                                1996     DECEMBER 31,      DECEMBER 31,      DECEMBER 31,      DECEMBER 31,      OCTOBER 31,
                         (UNAUDITED)             1995              1994              1993              1992             1992
- ----------------------------------------------------------------------------------------------------------------------------
<S>                   <C>              <C>              <C>               <C>               <C>               <C>
NET ASSET VALUE,
 BEGINNING OF PERIOD  $        21.49   $        16.12   $         16.22   $         16.22   $         14.97   $        16.18
                              ------           ------            ------            ------            ------           ------
INCOME FROM
 INVESTMENT
 OPERATIONS
  Net Investment
   Loss (1)                    (0.12)           (0.18)            (0.09)            (0.11)            (0.01)           (0.09)
  Net Realized and
   Unrealized Gain
   (Loss) on
   Investments                  1.64             5.55             (0.01)             0.11              1.26            (1.12)
                              ------           ------            ------            ------            ------           ------
    Total from
     Investment
     Operations                 1.52             5.37             (0.10)             0.00              1.25            (1.21)
                              ------           ------            ------            ------            ------           ------
DISTRIBUTIONS
  Net Investment
   Income                         --               --                --                --                --               --
                              ------           ------            ------            ------            ------           ------
NET ASSET VALUE, END
 OF PERIOD            $        23.01   $        21.49   $         16.12   $         16.22   $         16.22   $        14.97
                              ------           ------            ------            ------            ------           ------
                              ------           ------            ------            ------            ------           ------
TOTAL RETURN                    7.07%           33.31%            (0.62)%            0.00%             8.35%           (7.48)%
                              ------           ------            ------            ------            ------           ------
                              ------           ------            ------            ------            ------           ------
RATIOS AND
 SUPPLEMENTAL DATA:
Net Assets, End of
 Period (Thousands)          $96,512         $119,378          $117,669          $103,621           $94,161          $80,156
Ratio of Expenses to
 Average Net Assets
 (1)                            1.25%**           1.25%            1.25%             1.25%             1.25%**           1.25%
Ratio of Net
 Investment Income
 (Loss) to Average
 Net Assets (1)                (0.93)%**          (0.76)%           (0.61)%           (0.77)%           (0.68)%**          (0.66)%
Portfolio Turnover
 Rate                             18%              25%               24%               25%                1%              17%
Average Commission
 Rate#                       $0.0492              N/A               N/A               N/A               N/A              N/A
- -----------------
(1) Effect of voluntary expense limitation during the
    period:
    Per share
     benefit to net
     investment loss           $0.01           $0.003            $0.002             $0.01             $0.00            $0.01
  Ratios before
  expense
  limitation:
    Expenses to
     Average Net
     Assets                     1.30%**           1.26%            1.26%             1.31%             1.36%**           1.29%
    Net Investment
     Loss to Average
     Net Assets                (0.98)%**          (0.77)%           (0.62)%           (0.83)%           (0.79)%**          (0.71)%
 
<CAPTION>
- ----------------------------------------------------------------------------------------------------------------------------
 
<CAPTION>
 
                          YEAR ENDED
                         OCTOBER 31,
                              1991++
- ---------------------------------------------------
<S>                   <C>
NET ASSET VALUE,
 BEGINNING OF PERIOD  $         9.03
                              ------
INCOME FROM
 INVESTMENT
 OPERATIONS
  Net Investment
   Loss (1)                       --
  Net Realized and
   Unrealized Gain
   (Loss) on
   Investments                  7.19
                              ------
    Total from
     Investment
     Operations                 7.19
                              ------
DISTRIBUTIONS
  Net Investment
   Income                      (0.04)
                              ------
NET ASSET VALUE, END
 OF PERIOD            $        16.18
                              ------
                              ------
TOTAL RETURN                   79.84%
                              ------
                              ------
RATIOS AND
 SUPPLEMENTAL DATA:
Net Assets, End of
 Period (Thousands)          $54,364
Ratio of Expenses to
 Average Net Assets
 (1)                            1.25%
Ratio of Net
 Investment Income
 (Loss) to Average
 Net Assets (1)                 0.00%
Portfolio Turnover
 Rate                              2%
Average Commission
 Rate#                           N/A
- -----------------
(1) Effect of volunt
    period:
    Per share
     benefit to net
     investment loss           $0.02
  Ratios before
  expense
  limitation:
    Expenses to
     Average Net
     Assets                     1.39%
    Net Investment
     Loss to Average
     Net Assets                (0.14)%
- ------------------------------------------------------------------
</TABLE>
 
<TABLE>
<CAPTION>
<S>                        <C>
                             CLASS B
                           -----------
                            JANUARY 2,
                               1996***
                           TO JUNE 30,
                                  1996
                           (UNAUDITED)
- --------------------------------------
NET ASSET VALUE,
 BEGINNING OF PERIOD       $     21.47
                           -----------
INCOME FROM INVESTMENT
 OPERATIONS
  Net Investment Loss (2)        (0.09)
  Net Realized and
   Unrealized Gain (Loss)
   on Investments                 1.60
                           -----------
                                  1.51
                           -----------
NET ASSET VALUE, END OF
 PERIOD                    $     22.98
                           -----------
                           -----------
TOTAL RETURN                      7.03%
                           -----------
                           -----------
RATIOS AND SUPPLEMENTAL
 DATA:
Net Assets, End of Period
 (Thousands)                    $4,984
Ratio of Expenses to
 Average Net Assets (2)           1.50%**
Ratio of Net Investment
 Income (Loss) to Average
 Net Assets (2)                  (1.13)%**
Portfolio Turnover Rate             18%
Average Commission Rate        $0.0492
- -----------------
(2) Effect of voluntary expense
    limitation during the period:
    Per share benefit to
     net investment loss         $0.00+
  Ratios before expense
 limitation:
    Expenses to Average
     Net Assets                   1.55%**
    Net Investment Loss
     to Average Net
     Assets                      (1.18)%**
</TABLE>
 
- --------------------------------------------------------------------------------
 **Annualized
***The Portfolio began offering Class B shares on January 2, 1996.
  +Amount is less than $0.01 per share.
 ++Per share amounts for the year ended October 31, 1991 are based on average
   outstanding shares.
 #Beginning with fiscal year 1996, the Portfolio is required to disclose the
  average commission rate per share it paid for portfolio trades, on which
  commissions were charged, during the period.
 
    The accompanying notes are an integral part of the financial statements.
 
- --------------------------------------------------------------------------------
                                      170
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
FINANCIAL HIGHLIGHTS
SELECTED PER SHARE DATA AND RATIOS:
- --------------------------------------------------------------------------------
 
THE EQUITY GROWTH PORTFOLIO
 
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>
                                                                          CLASS A
                           ------------------------------------------------------------------------------------------------------
                               SIX MONTHS
                           ENDED JUNE 30,       YEAR ENDED        YEAR ENDED        YEAR ENDED        TWO MONTHS       YEAR ENDED
                                     1996     DECEMBER 31,      DECEMBER 31,      DECEMBER 31,    ENDED DECEMBER      OCTOBER 31,
                              (UNAUDITED)             1995              1994              1993          31, 1992             1992
<S>                        <C>              <C>              <C>               <C>               <C>               <C>
- ---------------------------------------------------------------------------------------------------------------------------------
NET ASSET VALUE,
 BEGINNING OF PERIOD       $        14.14   $        12.02   $         12.14   $         11.88   $         11.44   $        10.66
                                   ------           ------            ------            ------            ------           ------
INCOME FROM INVESTMENT
 OPERATIONS
  Net Investment Income
   (1)                               0.10             0.22              0.17              0.22              0.03             0.16
  Net Realized and
   Unrealized Gain on
   Investments                       2.25             4.93              0.21              0.28              0.41             0.82
                                   ------           ------            ------            ------            ------           ------
    Total from Investment
     Operations                      2.35             5.15              0.38              0.50              0.44             0.98
                                   ------           ------            ------            ------            ------           ------
DISTRIBUTIONS
  Net Investment Income             (0.05)           (0.28)            (0.13)            (0.23)               --            (0.20)
  In Excess of Net
   Investment Income                   --               --                --             (0.01)               --               --
  Net Realized Gain                    --            (2.75)            (0.37)               --                --               --
                                   ------           ------            ------            ------            ------           ------
    Total Distributions             (0.05)           (3.03)            (0.50)            (0.24)               --            (0.20)
                                   ------           ------            ------            ------            ------           ------
NET ASSET VALUE, END OF
 PERIOD                    $        16.44   $        14.14   $         12.02   $         12.14   $         11.88   $        11.44
                                   ------           ------            ------            ------            ------           ------
                                   ------           ------            ------            ------            ------           ------
TOTAL RETURN                        16.64%           45.02%             3.26%             4.33%             3.85%            9.26%
                                   ------           ------            ------            ------            ------           ------
                                   ------           ------            ------            ------            ------           ------
RATIOS AND SUPPLEMENTAL
 DATA:
Net Assets, End of Period
 (Thousands)                     $186,848         $158,112           $97,259           $73,789           $45,985          $36,558
Ratio of Expenses to
 Average Net Assets (1)              0.80%**           0.80%            0.80%             0.80%             0.80%**           0.80%
Ratio of Net Investment
 Income to Average Net
 Assets (1)                          1.33%**           1.57%            1.44%             1.59%             1.93%**           1.73%
Portfolio Turnover Rate               119%             186%              146%              172%                1%              38%
Average Commission Rate#          $0.0549              N/A               N/A               N/A               N/A              N/A
- -----------------
(1) Effect of voluntary expense limitation during the period:
    Per share benefit to
     net investment
     income                         $0.01            $0.01             $0.01             $0.02             $0.01            $0.02
  Ratios before expense
 limitation:
    Expenses to Average
     Net Assets                      0.90%**           0.88%            0.89%             0.93%             1.11%**           1.01%
    Net Investment Income
     to Average Net
     Assets                          1.23%**           1.49%            1.35%             1.46%             1.62%**           1.52%
- ---------------------------------------------------------------------------------------------------------------------------------
 
<CAPTION>
 
                              PERIOD FROM
                           APRIL 2, 1991*
                           TO OCTOBER 31,
                                     1991
<S>                        <C>
- ---------------------------------------------------------------------------------
NET ASSET VALUE,
 BEGINNING OF PERIOD       $        10.00
                                   ------
INCOME FROM INVESTMENT
 OPERATIONS
  Net Investment Income
   (1)                               0.05
  Net Realized and
   Unrealized Gain on
   Investments                       0.61
                                   ------
    Total from Investment
     Operations                      0.66
                                   ------
DISTRIBUTIONS
  Net Investment Income                --
  In Excess of Net
   Investment Income                   --
  Net Realized Gain                    --
                                   ------
    Total Distributions                --
                                   ------
NET ASSET VALUE, END OF
 PERIOD                    $        10.66
                                   ------
                                   ------
TOTAL RETURN                         6.60%
                                   ------
                                   ------
RATIOS AND SUPPLEMENTAL
 DATA:
Net Assets, End of Period
 (Thousands)                      $18,139
Ratio of Expenses to
 Average Net Assets (1)              0.80%**
Ratio of Net Investment
 Income to Average Net
 Assets (1)                          2.34%**
Portfolio Turnover Rate                 3%
Average Commission Rate#              N/A
- -----------------
(1) Effect of voluntary e
    Per share benefit to
     net investment
     income                         $0.03
  Ratios before expense
 limitation:
    Expenses to Average
     Net Assets                      1.37%**
    Net Investment Income
     to Average Net
     Assets                          1.77%**
- ------------------------------------------------------------------------------------------------
</TABLE>
 
<TABLE>
<CAPTION>
                              CLASS B
                           --------------
                               JANUARY 2,
                               1996*** TO
                                 JUNE 30,
                                     1996
                              (UNAUDITED)
- -----------------------------------------
<S>                        <C>
NET ASSET VALUE,
 BEGINNING OF PERIOD       $        14.22
                                   ------
INCOME FROM INVESTMENT
 OPERATIONS
  Net Investment Income
   (2)                               0.07
  Net Realized and
   Unrealized Gain on
   Investments                       2.19
                                   ------
    Total from Investment
     Operations                      2.26
                                   ------
DISTRIBUTIONS
  Net Investment Income             (0.05)
                                   ------
NET ASSET VALUE, END OF
 PERIOD                    $        16.43
                                   ------
                                   ------
TOTAL RETURN                        15.91%
                                   ------
                                   ------
RATIOS AND SUPPLEMENTAL
 DATA:
Net Assets, End of Period
 (Thousands)                       $4,903
Ratio of Expenses to
 Average Net Assets (2)              1.05%**
Ratio of Net Investment
 Income to Average Net
 Assets (2)                          1.35%**
Portfolio Turnover Rate               119%
Average Commission Rate           $0.0549
- -----------------
(2) Effect of voluntary expense
    limitation during the period:
    Per share benefit to
     net investment
     income                         $0.00+
  Ratios before expense
 limitation:
    Expenses to Average
     Net Assets                      1.14%**
    Net Investment Income
     to Average Net
     Assets                          1.26%**
</TABLE>
 
- --------------------------------------------------------------------------------
 
  *Commencement of operations.
 
 **Annualized
 
***The Portfolio began offering Class B shares on January 2, 1996.
 
  +Amount is less than $0.01 per share.
 
 #Beginning with fiscal year 1996, the Portfolio is required to disclose the
  average commission rate per share it paid for portfolio trades, on which
  commissions were charged, during the period.
 
    The accompanying notes are an integral part of the financial statements.
 
- --------------------------------------------------------------------------------
                                      171
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
FINANCIAL HIGHLIGHTS
SELECTED PER SHARE DATA AND RATIOS:
- --------------------------------------------------------------------------------
 
THE SMALL CAP VALUE EQUITY PORTFOLIO
 
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>
                                                                             CLASS A
                                     ---------------------------------------------------------------------------------------
                                                                                                                 PERIOD FROM
                                          SIX MONTHS                                                            DECEMBER 17,
                                      ENDED JUNE 30,        YEAR ENDED        YEAR ENDED        YEAR ENDED          1992* TO
                                                1996      DECEMBER 31,      DECEMBER 31,      DECEMBER 31,      DECEMBER 31,
                                         (UNAUDITED)              1995              1994              1993              1992
- ----------------------------------------------------------------------------------------------------------------------------
<S>                                  <C>               <C>               <C>               <C>               <C>
NET ASSET VALUE, BEGINNING OF
 PERIOD                                       $11.91            $10.80            $11.10            $10.14            $10.00
                                              ------            ------            ------            ------            ------
INCOME FROM INVESTMENT OPERATIONS
  Net Investment Income (1)                     0.15              0.30              0.28              0.24              0.01
  Net Realized and Unrealized Gain
   (Loss) on Investments                        1.01              1.82             (0.01)             0.90              0.13
                                              ------            ------            ------            ------            ------
    Total from Investment
     Operations                                 1.16              2.12              0.27              1.14              0.14
                                              ------            ------            ------            ------            ------
DISTRIBUTIONS
  Net Investment Income                        (0.07)            (0.38)            (0.27)            (0.18)               --
  Net Realized Gain                               --             (0.63)            (0.30)               --                --
                                              ------            ------            ------            ------            ------
    Total Distributions                        (0.07)            (1.01)            (0.57)            (0.18)               --
                                              ------            ------            ------            ------            ------
NET ASSET VALUE, END OF PERIOD       $         13.00   $         11.91   $         10.80   $         11.10            $10.14
                                              ------            ------            ------            ------            ------
                                              ------            ------            ------            ------            ------
TOTAL RETURN                                    9.76%            20.63%             2.53%            11.33%             1.40%
                                              ------            ------            ------            ------            ------
                                              ------            ------            ------            ------            ------
RATIOS AND SUPPLEMENTAL DATA:
Net Assets, End of Period
 (Thousands)                                 $46,746           $51,919           $40,033           $26,775            $5,974
Ratio of Expenses to Average Net
 Assets (1)                                     1.00%**            1.00%            1.00%             1.00%             1.00%**
Ratio of Net Investment Income to
 Average Net Assets (1)                         2.32%**            2.60%            2.67%             2.56%             1.64%**
Portfolio Turnover Rate                           13%               36%               22%               29%                0%
Average Commission Rate #                    $0.0404               N/A               N/A               N/A               N/A
- -----------------
(1) Effect of voluntary expense limitation during the period:
    Per share benefit to net
     investment income                         $0.01             $0.02             $0.03             $0.06             $0.13
   Ratios before expense
 limitation:
    Expenses to Average Net Assets              1.23%**            1.21%            1.26%             1.68%            23.14%**
    Net Investment Income (Loss) to
     Average Net Assets                         2.09%**            2.39%            2.41%             1.88%           (20.50)%**
 
<CAPTION>
- ----------------------------------------------------------------------------------------------------------------------------
</TABLE>
 
<TABLE>
<CAPTION>
<S>                                  <C>
                                        CLASS B
                                     --------------
                                         JANUARY 2,
                                            1996***
                                        TO JUNE 30,
                                               1996
                                        (UNAUDITED)
- ---------------------------------------------------
NET ASSET VALUE, BEGINNING OF
 PERIOD                              $        11.95
                                             ------
INCOME FROM INVESTMENT OPERATIONS
  Net Investment Income (2)                    0.09
  Net Realized and Unrealized Gain
   on Investments                              1.02
                                             ------
    Total from Investment
     Operations                                1.11
                                             ------
DISTRIBUTIONS
  Net Investment Income                       (0.07)
                                             ------
NET ASSET VALUE, END OF PERIOD       $        12.99
                                             ------
                                             ------
TOTAL RETURN                                   9.31%
                                             ------
                                             ------
RATIOS AND SUPPLEMENTAL DATA:
Net Assets, End of Period
 (Thousands)                                 $1,511
Ratio of Expenses to Average Net
 Assets (2)                                    1.25%**
Ratio of Net Investment Income to
 Average
  Net Assets (2)                               2.16%**
Portfolio Turnover Rate                          13%
Average Commission Rate                     $0.0404
- -----------------
(2) Effect of voluntary expense limitation during
 the period:
    Per share benefit to net
     investment income                        $0.01
   Ratios before expense
 limitation:
    Expenses to Average Net Assets             1.49%**
    Net Investment Income to
     Average Net Assets                        1.92%**
</TABLE>
 
- --------------------------------------------------------------------------------
 
  *Commencement of operations.
 
 **Annualized
 
***The Portfolio began offering Class B shares on January 2, 1996.
 
 #Beginning with fiscal year 1996, the Portfolio is required to disclose the
  average commission rate per share it paid for portfolio trades, on which
  commissions were charged, during the period.
 
    The accompanying notes are an integral part of the financial statements.
 
- --------------------------------------------------------------------------------
                                      172
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
FINANCIAL HIGHLIGHTS
SELECTED PER SHARE DATA AND RATIOS:
- --------------------------------------------------------------------------------
 
THE U.S. REAL ESTATE PORTFOLIO
 
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>
                                                                CLASS A
                                                    -------------------------------
                                                                        PERIOD FROM
                                                        SIX MONTHS     FEBRUARY 24,
                                                    ENDED JUNE 30,         1995* TO
                                                              1996     DECEMBER 31,
                                                       (UNAUDITED)             1995
- -----------------------------------------------------------------------------------
<S>                                                 <C>              <C>
NET ASSET VALUE, BEGINNING OF PERIOD                $        11.42   $        10.00
                                                            ------           ------
INCOME FROM INVESTMENT OPERATIONS
  Net Investment Income (1)                                   0.28             0.26
  Net Realized and Unrealized Gain on Investments             0.98             1.84
                                                            ------           ------
    Total from Investment Operations                          1.26             2.10
                                                            ------           ------
DISTRIBUTIONS
  Net Investment Income                                      (0.14)           (0.24)
  Net Realized Gain                                             --            (0.44)
                                                            ------           ------
    Total Distributions                                      (0.14)           (0.68)
                                                            ------           ------
NET ASSET VALUE, END OF PERIOD                      $        12.54   $        11.42
                                                            ------           ------
                                                            ------           ------
TOTAL RETURN                                                 11.10%           21.07%
                                                            ------           ------
                                                            ------           ------
RATIOS AND SUPPLEMENTAL DATA:
Net Assets, End of Period (Thousands)                     $119,709          $69,509
Ratio of Expenses to Average Net Assets (1)                   1.00%**           1.00%**
Ratio of Net Investment Income to Average Net
 Assets (1)                                                   5.21%**           4.04%**
Portfolio Turnover Rate                                         93%             158%
Average Commission Rate#                                   $0.0564
- -----------------
(1) Effect of voluntary expense limitation during the period:
    Per share benefit to net investment income               $0.01            $0.02
   Ratios before expense limitation:
    Expenses to Average Net Assets                            1.19%**           1.33%**
    Net Investment Income to Average Net Assets               5.02%**           3.71%**
 
<CAPTION>
- -----------------------------------------------------------------------------------
</TABLE>
 
<TABLE>
<CAPTION>
<S>                                                 <C>
                                                       CLASS B
                                                    -------------
                                                       JANUARY 2,
                                                          1996***
                                                      TO JUNE 30,
                                                             1996
                                                      (UNAUDITED)
- -----------------------------------------------------------------
NET ASSET VALUE, BEGINNING OF PERIOD                $       11.50
                                                           ------
INCOME FROM INVESTMENT OPERATIONS
  Net Investment Income (2)                                  0.25
  Net Realized and Unrealized Gain on Investments            0.91
                                                           ------
    Total from Investment Operations                         1.16
                                                           ------
DISTRIBUTIONS
  Net Investment Income                                     (0.14)
                                                           ------
NET ASSET VALUE, END OF PERIOD                      $       12.52
                                                           ------
                                                           ------
TOTAL RETURN                                                10.15%
                                                           ------
                                                           ------
RATIOS AND SUPPLEMENTAL DATA:
Net Assets, End of Period (Thousands)                      $4,803
Ratio of Expenses to Average Net Assets (2)                  1.25%**
Ratio of Net Investment Income to Average Net
 Assets (2)                                                  6.24%**
Portfolio Turnover Rate                                        93%
Average Commission Rate                                   $0.0564
- -----------------
(2) Effect of voluntary expense limitation during the period:
    Per share benefit to net investment income              $0.01
   Ratios before expense limitation:
    Expenses to Average Net Assets                           1.41%**
    Net Investment Income to Average Net Assets              6.08%**
</TABLE>
 
- --------------------------------------------------------------------------------
 
  *Commencement of operations.
 
 **Annualized
 
***The Portfolio began offering Class B shares on January 2, 1996.
 
 #Beginning with fiscal year 1996, the Portfolio is required to disclose the
  average commission rate per share it paid for portfolio trades, on which
  commissions were charged, during the period.
 
    The accompanying notes are an integral part of the financial statements.
 
- --------------------------------------------------------------------------------
                                      173
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
FINANCIAL HIGHLIGHTS
SELECTED PER SHARE DATA AND RATIOS:
- --------------------------------------------------------------------------------
 
THE VALUE EQUITY PORTFOLIO
 
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>
                                                                        CLASS A
                           -------------------------------------------------------------------------------------------------
                              SIX MONTHS
                                   ENDED                                                          TWO MONTHS
                                JUNE 30,       YEAR ENDED       YEAR ENDED       YEAR ENDED            ENDED      YEAR ENDED
                                    1996     DECEMBER 31,     DECEMBER 31,     DECEMBER 31,     DECEMBER 31,     OCTOBER 31,
                             (UNAUDITED)             1995             1994             1993             1992            1992
- ----------------------------------------------------------------------------------------------------------------------------
<S>                        <C>             <C>              <C>              <C>              <C>              <C>
NET ASSET VALUE,
 BEGINNING OF PERIOD       $       13.94   $        11.50   $        12.63   $        11.31   $        10.71   $       10.24
                                  ------           ------           ------           ------           ------          ------
INCOME FROM INVESTMENT
 OPERATIONS
  Net Investment Income
   (1)                              0.20             0.38             0.40             0.37             0.08            0.38
  Net Realized and
   Unrealized Gain (Loss)
   on Investments                   0.99             3.30            (0.55)            1.31             0.52            0.48
                                  ------           ------           ------           ------           ------          ------
    Total from Investment
     Operations                     1.19             3.68            (0.15)            1.68             0.60            0.86
                                  ------           ------           ------           ------           ------          ------
DISTRIBUTIONS
  Net Investment Income            (0.09)           (0.47)           (0.40)           (0.36)              --           (0.39)
  Net Realized Gain                   --            (0.77)           (0.58)              --               --              --
                                  ------           ------           ------           ------           ------          ------
    Total Distributions            (0.09)           (1.24)           (0.98)           (0.36)              --           (0.39)
                                  ------           ------           ------           ------           ------          ------
Net Asset Value, End of
 Period                    $       15.04   $        13.94   $        11.50   $        12.63   $        11.31   $       10.71
                                  ------           ------           ------           ------           ------          ------
                                  ------           ------           ------           ------           ------          ------
TOTAL RETURN                        8.55%           33.69%           (1.29)%          15.14%            5.60%           8.51%
                                  ------           ------           ------           ------           ------          ------
                                  ------           ------           ------           ------           ------          ------
RATIOS AND SUPPLEMENTAL
 DATA:
Net Assets, End of Period
 (Thousands)                    $134,316         $147,365          $73,406          $54,598          $27,541         $25,013
Ratio of Expenses to
 Average Net Assets (1)             0.70%**           0.70%           0.70%            0.70%            0.70%**          0.70%
Ratio of Net Investment
 Income to Average Net
 Assets (1)                         2.64%**           3.01%           3.37%            3.23%            4.41%**          3.72%
Portfolio Turnover Rate               15%              43%              33%              51%               9%             56%
Average Commission Rate#         $0.0458              N/A              N/A              N/A              N/A             N/A
- -----------------
(1) Effect of voluntary expense
    limitation during the period:
    Per share benefit to
     net investment
     income                        $0.01            $0.01            $0.01            $0.03            $0.01           $0.01
   Ratios before expense
 limitation:
    Expenses to Average
     Net Assets                     0.77%**           0.77%           0.80%            0.95%            1.20%**          0.84%
    Net Investment Income
     to Average Net
     Assets                         2.57%**           2.94%           3.27%            2.98%            3.91%**          3.58%
 
<CAPTION>
- ----------------------------------------------------------------------------------------------------------------------------
 
<CAPTION>
 
                              YEAR ENDED
                             OCTOBER 31,
                                    1991
- ------------------------------------------------------
<S>                        <C>
NET ASSET VALUE,
 BEGINNING OF PERIOD       $        8.59
                                  ------
INCOME FROM INVESTMENT
 OPERATIONS
  Net Investment Income
   (1)                              0.46
  Net Realized and
   Unrealized Gain (Loss)
   on Investments                   1.67
                                  ------
    Total from Investment
     Operations                     2.13
                                  ------
DISTRIBUTIONS
  Net Investment Income            (0.48)
  Net Realized Gain                   --
                                  ------
    Total Distributions            (0.48)
                                  ------
Net Asset Value, End of
 Period                    $       10.24
                                  ------
                                  ------
TOTAL RETURN                       25.34%
                                  ------
                                  ------
RATIOS AND SUPPLEMENTAL
 DATA:
Net Assets, End of Period
 (Thousands)                     $16,304
Ratio of Expenses to
 Average Net Assets (1)             0.70%
Ratio of Net Investment
 Income to Average Net
 Assets (1)                         4.57%
Portfolio Turnover Rate               90%
Average Commission Rate#             N/A
- -----------------
(1) Effect of voluntary e
    limitation during the
    Per share benefit to
     net investment
     income                        $0.02
   Ratios before expense
 limitation:
    Expenses to Average
     Net Assets                     0.87%
    Net Investment Income
     to Average Net
     Assets                         4.40%
- --------------------------------------------------------------------
</TABLE>
 
<TABLE>
<CAPTION>
<S>                        <C>
                              CLASS B
                           -------------
                              JANUARY 2,
                              1996*** TO
                           JUNE 30, 1996
                             (UNAUDITED)
- ----------------------------------------
NET ASSET VALUE,
 BEGINNING OF PERIOD       $       14.06
                                  ------
INCOME FROM INVESTMENT
 OPERATIONS
  Net Investment Income
   (2)                              0.10
  Net Realized and
   Unrealized Gain on
   Investments                      0.95
                                  ------
    Total from Investment
     Operations                     1.05
                                  ------
DISTRIBUTIONS
  Net Investment Income            (0.09)
                                  ------
Net Asset Value, End of
 Period                    $       15.02
                                  ------
                                  ------
TOTAL RETURN                        7.48%
                                  ------
                                  ------
RATIOS AND SUPPLEMENTAL
 DATA:
Net Assets, End of Period
 (Thousands)                      $1,954
Ratio of Expenses to
 Average Net Assets (2)             0.95%**
Ratio of Net Investment
 Income to Average
 Net Assets (2)                     2.22%**
Portfolio Turnover Rate               15%
Average Commission Rate          $0.0458
- -----------------
(2) Effect of voluntary expense
    limitation during the period:
    Per share benefit to
     net investment
     income                        $0.00+
   Ratios before expense
 limitation:
    Expenses to Average
     Net Assets                     1.01%**
    Net Investment Income
     to Average Net
     Assets                         2.16%**
</TABLE>
 
- --------------------------------------------------------------------------------
 
 **Annualized
***The Portfolio began offering Class B shares on January 2, 1996.
  +Amount is less than $0.01.
 #Beginning with fiscal year 1996, the Portfolio is required to disclose the
  average commission rate per share it paid for portfolio trades, on which
  commissions were charged, during the period.
 
    The accompanying notes are an integral part of the financial statements.
 
- --------------------------------------------------------------------------------
                                      174
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
FINANCIAL HIGHLIGHTS
SELECTED PER SHARE DATA AND RATIOS:
- --------------------------------------------------------------------------------
 
THE BALANCED PORTFOLIO
 
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>
                                                               CLASS A
                 ---------------------------------------------------------------------------------------------------
                      SIX MONTHS
                           ENDED
                        JUNE 30,       YEAR ENDED       YEAR ENDED       YEAR ENDED       TWO MONTHS      YEAR ENDED
                            1996     DECEMBER 31,     DECEMBER 31,     DECEMBER 31,   ENDED DECEMBER     OCTOBER 31,
                     (UNAUDITED)             1995             1994             1993         31, 1992            1992
- --------------------------------------------------------------------------------------------------------------------
<S>              <C>               <C>              <C>              <C>              <C>              <C>
NET ASSET
 VALUE,
 BEGINNING OF
 PERIOD                    $9.98            $8.96   $        11.13   $        11.31   $        11.00   $       10.61
                          ------           ------           ------           ------           ------          ------
INCOME FROM
 INVESTMENT
 OPERATIONS
  Net
   Investment
   Income (1)               0.24             0.39             0.42             0.44             0.10            0.58
  Net Realized
    and
    Unrealized
    Gain (Loss)
    on
    Investments             0.15             1.62            (0.64)            0.79             0.21            0.42
                          ------           ------           ------           ------           ------          ------
    Total from
     Investment
     Operations             0.39             2.01            (0.22)            1.23             0.31            1.00
                          ------           ------           ------           ------           ------          ------
DISTRIBUTIONS
  Net
   Investment
   Income                  (0.10)           (0.50)           (0.49)           (0.41)              --           (0.58)
  In Excess of
   Net
   Investment
   Income                     --               --               --            (0.08)              --              --
  Net Realized
   Gain                       --            (0.49)           (1.46)           (0.06)              --           (0.03)
  In Excess of
   Net Realized
   Gain                       --               --               --            (0.86)              --              --
                          ------           ------           ------           ------           ------          ------
    Total
  Distributions            (0.10)           (0.99)           (1.95)           (1.41)              --           (0.61)
                          ------           ------           ------           ------           ------          ------
NET ASSET
 VALUE, END OF
 PERIOD          $         10.27   $         9.98   $         8.96   $        11.13   $        11.31   $       11.00
                          ------           ------           ------           ------           ------          ------
                          ------           ------           ------           ------           ------          ------
TOTAL RETURN                3.92%           23.63%           (2.32)%          12.09%            2.82%           9.57%
                          ------           ------           ------           ------           ------          ------
                          ------           ------           ------           ------           ------          ------
RATIOS AND
 SUPPLEMENTAL
 DATA:
Net Assets, End
 of Period
 (Thousands)             $13,173          $22,642          $18,492          $29,684          $39,984         $40,332
Ratio of
 Expenses to
 Average Net
 Assets (1)                 0.70%**           0.70%           0.70%            0.70%            0.70%**          0.70%
Ratio of Net
 Investment
 Income to
 Average Net
 Assets (1)                 3.88%**           4.10%           4.13%            3.88%            5.29%**          5.21%
Portfolio
 Turnover Rate                 6%              26%              44%             136%               4%             40%
Average
 Commission
 Rate#                   $0.0385              N/A              N/A              N/A              N/A             N/A
- ---------------
(1) Effect of
    voluntary
    expense
    limitation
    during the
    period:
    Per share
     benefit to
     net
     investment
     income                $0.03            $0.03            $0.03            $0.04            $0.01           $0.01
   Ratios
 before expense
 limitation:
    Expenses to
     Average
     Net Assets             1.24%**           1.02%           0.95%            1.02%            1.00%**          0.79%
    Net
     Investment
     Income to
     Average
     Net Assets             3.34%**           3.78%           3.88%            3.56%            4.99%**          5.12%
 
<CAPTION>
- --------------------------------------------------------------------------------------------------------------------
 
<CAPTION>
 
                     YEAR ENDED
                    OCTOBER 31,
                           1991
- ----------------------------------------------------------------------------------
<S>              <C>
NET ASSET
 VALUE,
 BEGINNING OF
 PERIOD                   $9.62
                         ------
INCOME FROM
 INVESTMENT
 OPERATIONS
  Net
   Investment
   Income (1)              0.59
  Net Realized
    and
    Unrealized
    Gain (Loss)
    on
    Investments            1.03
                         ------
    Total from
     Investment
     Operations            1.62
                         ------
DISTRIBUTIONS
  Net
   Investment
   Income                 (0.63)
  In Excess of
   Net
   Investment
   Income                    --
  Net Realized
   Gain                      --
  In Excess of
   Net Realized
   Gain                      --
                         ------
    Total
  Distributions           (0.63)
                         ------
NET ASSET
 VALUE, END OF
 PERIOD          $        10.61
                         ------
                         ------
TOTAL RETURN              17.31%
                         ------
                         ------
RATIOS AND
 SUPPLEMENTAL
 DATA:
Net Assets, End
 of Period
 (Thousands)            $51,334
Ratio of
 Expenses to
 Average Net
 Assets (1)                0.70%
Ratio of Net
 Investment
 Income to
 Average Net
 Assets (1)                5.99%
Portfolio
 Turnover Rate               67%
Average
 Commission
 Rate#                      N/A
- ---------------
(1) Effect of
    voluntary
    expense
    limitation
    during the
    period:
    Per share
     benefit to
     net
     investment
     income               $0.01
   Ratios
 before expense
 limitation:
    Expenses to
     Average
     Net Assets            0.78%
    Net
     Investment
     Income to
     Average
     Net Assets            5.91%
- -------------------------------------------------------------------------------------------------
</TABLE>
 
<TABLE>
<CAPTION>
<S>              <C>
                      CLASS B
                 -----------------
                        JANUARY 2,
                        1996*** TO
                          JUNE 30,
                              1996
                       (UNAUDITED)
- ----------------------------------
NET ASSET
 VALUE,
 BEGINNING OF
 PERIOD          $           10.02
                            ------
INCOME FROM
 INVESTMENT
 OPERATIONS
  Net
   Investment
   Income (2)                 0.12
  Net Realized
    and
    Unrealized
    Gain on
    Investments               0.22
                            ------
    Total from
     Investment
     Operations               0.34
                            ------
DISTRIBUTIONS
  Net
   Investment
   Income                    (0.10)
                            ------
NET ASSET
 VALUE, END OF
 PERIOD          $           10.26
                            ------
                            ------
TOTAL RETURN                  3.40%
                            ------
                            ------
RATIOS AND
 SUPPLEMENTAL
 DATA:
Net Assets, End
 of Period
 (Thousands)                $2,356
Ratio of
 Expenses to
 Average Net
 Assets (2)                   0.95%**
Ratio of Net
 Investment
 Income to
 Average Net
 Assets (2)                   3.56%**
Portfolio
 Turnover Rate                   6%
Average
 Commission
 Rate                      $0.0385
- ---------------
(2) Effect of
    voluntary
    expense
    limitation
    during the
    period:
    Per share
     benefit to
     net
     investment
     income      $            0.02
   Ratios
 before expense
 limitation:
    Expenses to
     Average
     Net Assets               1.48%**
    Net
     Investment
     Income to
     Average
     Net Assets               3.03%**
</TABLE>
 
- --------------------------------------------------------------------------------
 
 **Annualized
 
***The Portfolio began offering Class B shares on January 2, 1996.
 
 #Beginning with fiscal year 1996, the Portfolio is required to disclose the
  average commission rate per share it paid for portfolio trades, on which
  commissions were charged, during the period.
 
    The accompanying notes are an integral part of the financial statements.
 
- --------------------------------------------------------------------------------
                                      175
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
FINANCIAL HIGHLIGHTS
SELECTED PER SHARE DATA AND RATIOS:
- --------------------------------------------------------------------------------
 
THE EMERGING MARKETS DEBT PORTFOLIO
 
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>
                                                                   CLASS A
                                               -----------------------------------------------
                                                                                   PERIOD FROM
                                                    SIX MONTHS                     FEBRUARY 1,
                                                         ENDED                           1994*
                                                      JUNE 30,      YEAR ENDED     TO DECEMBER
                                                          1996    DECEMBER 31,             31,
                                                   (UNAUDITED)            1995            1994
- ----------------------------------------------------------------------------------------------
<S>                                            <C>               <C>             <C>
NET ASSET VALUE, BEGINNING OF PERIOD           $          8.59   $        8.59   $       10.00
                                                        ------          ------          ------
INCOME FROM INVESTMENT OPERATIONS
  Net Investment Income                                   0.61            1.36            0.50
  Net Realized and Unrealized Gain (Loss) on
   Investments                                            0.97            0.91           (1.91)
                                                        ------          ------          ------
    Total from Investment Operations                      1.58            2.27           (1.41)
                                                        ------          ------          ------
DISTRIBUTIONS
  Net Investment Income                                     --           (1.86)             --
  Net Realized Gain                                         --           (0.41)             --
                                                        ------          ------          ------
    Total Distributions                                     --           (2.27)             --
                                                        ------          ------          ------
NET ASSET VALUE, END OF PERIOD                          $10.17           $8.59           $8.59
                                                        ------          ------          ------
                                                        ------          ------          ------
TOTAL RETURN                                             18.39%          28.23%         (14.10)%
                                                        ------          ------          ------
                                                        ------          ------          ------
RATIOS AND SUPPLEMENTAL DATA:
Net Assets, End of Period (Thousands)                 $191,976        $181,878        $144,949
Ratio of Expenses to Average Net Assets                   2.84%**          1.76%          1.49%**
Ratio of Net Investment Income to Average Net
 Assets                                                  12.99%**         14.70%          9.97%**
Portfolio Turnover Rate                                    316%            406%            273%
Ratio of Expenses to Average Net Assets
 Excluding Dividend and Interest Expenses                 1.49%**          1.75%           N/A
 
<CAPTION>
- ----------------------------------------------------------------------------------------------
</TABLE>
 
<TABLE>
<CAPTION>
<S>                                            <C>
                                                   CLASS B
                                               ---------------
                                                    JANUARY 2,
                                                       1996***
                                                   TO JUNE 30,
                                                          1996
                                                   (UNAUDITED)
- --------------------------------------------------------------
NET ASSET VALUE, BEGINNING OF PERIOD           $          8.68
                                                        ------
INCOME FROM INVESTMENT OPERATIONS
  Net Investment Income                                   0.33
  Net Realized and Unrealized Gain on
   Investments                                            1.14
                                                        ------
    Total from Investment Operations                      1.47
                                                        ------
NET ASSET VALUE, END OF PERIOD                 $         10.15
                                                        ------
                                                        ------
TOTAL RETURN                                             16.94%
                                                        ------
                                                        ------
RATIOS AND SUPPLEMENTAL DATA:
Net Assets, End of Period (Thousands)                   $3,074
Ratio of Expenses to Average Net Assets                   2.77%**
Ratio of Net Investment Income to Average Net
 Assets                                                  13.59%**
Portfolio Turnover Rate                                    316%
Ratio of Expenses to Average Net Assets
 Excluding Dividend and Interest Expenses                 1.74%**
</TABLE>
 
- --------------------------------------------------------------------------------
  *Commencement of operations.
 
 **Annualized
 
***The Portfolio began offering Class B shares on January 2, 1996.
 
    The accompanying notes are an integral part of the financial statements.
 
- --------------------------------------------------------------------------------
                                      176
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
FINANCIAL HIGHLIGHTS
SELECTED PER SHARE DATA AND RATIOS:
- --------------------------------------------------------------------------------
 
THE FIXED INCOME PORTFOLIO
 
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>
                                                                      CLASS A
                           ---------------------------------------------------------------------------------------------
                              SIX MONTHS
                                   ENDED                                                      TWO MONTHS
                                JUNE 30,      YEAR ENDED      YEAR ENDED      YEAR ENDED           ENDED      YEAR ENDED
                                    1996    DECEMBER 31,    DECEMBER 31,    DECEMBER 31,    DECEMBER 31,     OCTOBER 31,
                             (UNAUDITED)            1995            1994            1993            1992            1992
<S>                        <C>             <C>             <C>             <C>             <C>             <C>
- ------------------------------------------------------------------------------------------------------------------------
NET ASSET VALUE,
 BEGINNING OF PERIOD       $       10.81   $        9.82   $       11.05   $       10.93   $       10.92   $       10.55
                                  ------          ------          ------          ------          ------          ------
INCOME FROM INVESTMENT
 OPERATIONS
  Net Investment Income
   (1)                              0.33            0.72            0.59            0.54            0.10            0.69
  Net Realized and
    Unrealized Gain
    (Loss) on Investments          (0.43)           1.06           (0.92)           0.41            0.01            0.39
                                  ------          ------          ------          ------          ------          ------
    Total from Investment
      Operations                   (0.10)           1.78           (0.33)           0.95            0.11            1.08
                                  ------          ------          ------          ------          ------          ------
DISTRIBUTIONS
  Net Investment Income            (0.23)          (0.79)          (0.53)          (0.56)          (0.10)          (0.69)
  In Excess of Net
    Investment Income                 --              --              --           (0.01)             --              --
  Net Realized Gain                   --              --           (0.37)          (0.26)             --           (0.02)
  In Excess of Net
    Realized Gain                     --              --           (0.00)+            --              --              --
                                  ------          ------          ------          ------          ------          ------
    Total Distributions            (0.23)          (0.79)          (0.90)          (0.83)          (0.10)          (0.71)
                                  ------          ------          ------          ------          ------          ------
NET ASSET VALUE, END OF
 PERIOD                    $       10.48   $       10.81   $        9.82   $       11.05   $       10.93   $       10.92
                                  ------          ------          ------          ------          ------          ------
                                  ------          ------          ------          ------          ------          ------
TOTAL RETURN                       (0.92)%         18.76%          (3.10)%          9.07%           1.02%          10.61%
                                  ------          ------          ------          ------          ------          ------
                                  ------          ------          ------          ------          ------          ------
RATIOS AND SUPPLEMENTAL
 DATA:
Net Assets, End of Period
 (Thousands)                    $157,098        $165,527        $209,331        $240,668        $154,210        $146,546
Ratio of Expenses to
 Average Net Assets (1)             0.45%**          0.45%          0.45%           0.45%           0.45%**          0.45%
Ratio of Net Investment
 Income to Average Net
 Assets (1)                         6.29%**          6.85%          5.73%           4.97%           5.56%**          6.59%
Portfolio Turnover Rate              122%            172%            388%            240%             15%            105%
- -----------------
(1) Effect of voluntary expense limitation during the period:
    Per share benefit to
     net investment
     income                        $0.01           $0.01           $0.01           $0.02           $0.01           $0.02
   Ratios before expense
 limitation:
    Expenses to Average
     Net Assets                     0.62%**          0.59%          0.58%           0.60%           0.75%**          0.59%
    Net Investment Income
     to Average Net
     Assets                         6.12%**          6.71%          5.60%           4.82%           5.26%**          6.45%
- ------------------------------------------------------------------------------------------------------------------------
 
<CAPTION>
 
                             PERIOD FROM
                           MAY 15, 1991*
                              TO OCTOBER
                                31, 1991
<S>                        <C>
- ----------------------------------------------------------------------------------------------------------------
NET ASSET VALUE,
 BEGINNING OF PERIOD       $       10.00
                                  ------
INCOME FROM INVESTMENT
 OPERATIONS
  Net Investment Income
   (1)                              0.22
  Net Realized and
    Unrealized Gain
    (Loss) on Investments           0.49
                                  ------
    Total from Investment
      Operations                    0.71
                                  ------
DISTRIBUTIONS
  Net Investment Income            (0.16)
  In Excess of Net
    Investment Income                 --
  Net Realized Gain                   --
  In Excess of Net
    Realized Gain                     --
                                  ------
    Total Distributions            (0.16)
                                  ------
NET ASSET VALUE, END OF
 PERIOD                    $       10.55
                                  ------
                                  ------
TOTAL RETURN                        7.12%
                                  ------
                                  ------
RATIOS AND SUPPLEMENTAL
 DATA:
Net Assets, End of Period
 (Thousands)                     $72,326
Ratio of Expenses to
 Average Net Assets (1)             0.45%**
Ratio of Net Investment
 Income to Average Net
 Assets (1)                         7.29%**
Portfolio Turnover Rate               48%
- -----------------
(1) Effect of voluntary e
    Per share benefit to
     net investment
     income                        $0.01
   Ratios before expense
 limitation:
    Expenses to Average
     Net Assets                     0.81%**
    Net Investment Income
     to Average Net
     Assets                         6.93%**
- ------------------------------------------------------------------------------------------------------------------------
 
</TABLE>
 
<TABLE>
<CAPTION>
                              CLASS B
                           -------------
                              JANUARY 2,
                              1996*** TO
                                JUNE 30,
                                    1996
                             (UNAUDITED)
<S>                        <C>
- ----------------------------------------
NET ASSET VALUE,
 BEGINNING OF PERIOD       $       10.81
                                  ------
INCOME FROM INVESTMENT
 OPERATIONS
  Net Investment Income
   (2)                              0.31
  Net Realized and
    Unrealized (Loss) on
    Investments                    (0.42)
                                  ------
    Total from Investment
      Operations                   (0.11)
                                  ------
DISTRIBUTIONS
  Net Investment Income            (0.23)
                                  ------
NET ASSET VALUE, END OF
 PERIOD                    $       10.47
                                  ------
                                  ------
TOTAL RETURN                       (1.02)%
                                  ------
                                  ------
RATIOS AND SUPPLEMENTAL
 DATA:
Net Assets, End of Period
 (Thousands)                      $1,271
Ratio of Expenses to
 Average Net Assets (2)             0.60%**
Ratio of Net Investment
 Income to Average Net
 Assets (2)                         6.19%**
Portfolio Turnover Rate              122%
- -----------------
(2) Effect of voluntary expense
    limitation during the period:
    Per share benefit to
     net investment
     income                        $0.01
   Ratios before expense
 limitation:
    Expenses to Average
     Net Assets                     0.86%**
    Net Investment Income
     to Average Net
     Assets                         5.93%**
</TABLE>
 
- --------------------------------------------------------------------------------
 
  *Commencement of operations.
 
 **Annualized
***The Portfolio began offering Class B shares on January 2, 1996.
  +Amount is less than $0.01 per share.
 
    The accompanying notes are an integral part of the financial statements.
 
- --------------------------------------------------------------------------------
                                      177
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
FINANCIAL HIGHLIGHTS
SELECTED PER SHARE DATA AND RATIOS:
- --------------------------------------------------------------------------------
 
THE GLOBAL FIXED INCOME PORTFOLIO
 
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>
                     SIX MONTHS
                          ENDED                                                  TWO MONTHS                     PERIOD FROM
                       JUNE 30,     YEAR ENDED     YEAR ENDED     YEAR ENDED          ENDED     YEAR ENDED     MAY 1, 1991*
                           1996   DECEMBER 31,   DECEMBER 31,   DECEMBER 31,   DECEMBER 31,    OCTOBER 31,   TO OCTOBER 31,
                    (UNAUDITED)           1995           1994           1993           1992           1992             1991
- ---------------------------------------------------------------------------------------------------------------------------
<S>               <C>             <C>            <C>            <C>            <C>            <C>            <C>
NET ASSET VALUE,
 BEGINNING OF
 PERIOD           $       11.22   $      10.29   $      11.68   $      11.26   $      11.41   $      10.61   $        10.00
                         ------         ------         ------         ------         ------         ------           ------
INCOME FROM
 INVESTMENT
 OPERATIONS
  Net Investment
   Income (1)              0.31           0.76           0.70           0.69           0.14           0.53             0.16
  Net Realized
    and
    Unrealized
    Gain (Loss)
    on
    Investments           (0.29)          1.15          (1.38)          0.90          (0.29)          0.55             0.45
                         ------         ------         ------         ------         ------         ------           ------
    Total from
     Investment
     Operations            0.02           1.91          (0.68)          1.59          (0.15)          1.08             0.61
                         ------         ------         ------         ------         ------         ------           ------
DISTRIBUTIONS
  Net Investment
   Income                 (0.18)         (0.98)         (0.40)         (0.79)            --          (0.27)              --
  In Excess of
   Net
   Investment
   Income                    --             --             --          (0.22)            --             --               --
  Net Realized
   Gain                      --             --          (0.31)         (0.16)            --          (0.01)              --
                         ------         ------         ------         ------         ------         ------           ------
    Total
   Distributions          (0.18)         (0.98)         (0.71)         (1.17)            --          (0.28)              --
                         ------         ------         ------         ------         ------         ------           ------
NET ASSET VALUE,
 END OF PERIOD    $       11.06   $      11.22   $      10.29   $      11.68   $      11.26   $      11.41   $        10.61
                         ------         ------         ------         ------         ------         ------           ------
                         ------         ------         ------         ------         ------         ------           ------
TOTAL RETURN               0.20%         19.32%         (6.08)%        15.34%         (1.31)%        10.29%            6.10%
                         ------         ------         ------         ------         ------         ------           ------
                         ------         ------         ------         ------         ------         ------           ------
RATIOS AND
 SUPPLEMENTAL
 DATA:
Net Assets, End
 of Period
 (Thousands)           $116,382       $102,852       $130,675       $172,468        $92,897        $94,847          $28,236
Ratio of
 Expenses to
 Average Net
 Assets (1)                0.50%**         0.50%         0.50%          0.50%          0.50%**         0.50%           0.50%**
Ratio of Net
 Investment
 Income to
 Average Net
 Assets (1)                5.75%**         6.79%         6.34%          5.99%          6.99%**         6.92%           7.24%**
Portfolio
 Turnover Rate              158%           207%           171%           108%             9%           144%              20%
- ----------------
(1) Effect of voluntary expense limitation during the period:
    Per share
     benefit to
     net
     investment
     income               $0.01          $0.02          $0.02          $0.02          $0.01          $0.03            $0.02
  Ratios before
 expense
 limitation:
    Expenses to
     Average Net
     Assets                0.75%**         0.71%         0.66%          0.70%          0.90%**         0.86%           1.62%**
    Net
     Investment
     Income to
     Average Net
     Assets                5.50%**         6.58%         6.18%          5.79%          6.59%**         6.56%           6.12%**
 
<CAPTION>
- ---------------------------------------------------------------------------------------------------------------------------
</TABLE>
 
<TABLE>
<CAPTION>
<S>                   <C>
                          CLASS B
                      ---------------
                           JANUARY 2,
                           1996*** TO
                             JUNE 30,
                                 1996
                          (UNAUDITED)
- -------------------------------------
NET ASSET VALUE,
 BEGINNING OF PERIOD  $         11.23
                               ------
INCOME FROM
 INVESTMENT
 OPERATIONS
  Net Investment
   Income (2)                    0.19
  Net Realized and
    Unrealized Loss
    on Investments              (0.19)
                               ------
    Total from
     Investment
     Operations                    --
                               ------
DISTRIBUTIONS
  Net Investment
   Income                       (0.18)
                               ------
NET ASSET VALUE, END
 OF PERIOD            $         11.05
                               ------
                               ------
TOTAL RETURN                     0.02%
                               ------
                               ------
RATIOS AND
 SUPPLEMENTAL DATA:
Net Assets, End of
 Period (Thousands)            $1,617
Ratio of Expenses to
 Average Net Assets
 (2)                             0.65%**
Ratio of Net
 Investment Income
 to Average Net
 Assets (2)                      5.55%**
Portfolio Turnover
 Rate                             158%
- -----------------
(2) Effect of voluntary expense
    limitation during the period:
    Per share
     benefit to net
     investment
     income                     $0.01
  Ratios before
 expense limitation:
    Expenses to
     Average Net
     Assets                      1.00%**
    Net Investment
     Income to
     Average Net
     Assets                      5.20%**
</TABLE>
 
- --------------------------------------------------------------------------------
 
  *Commencement of operations.
 
 **Annualized
 
***The Portfolio began offering Class B shares on January 2, 1996.
 
    The accompanying notes are an integral part of the financial statements.
 
- --------------------------------------------------------------------------------
                                      178
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
FINANCIAL HIGHLIGHTS
SELECTED PER SHARE DATA AND RATIOS:
- --------------------------------------------------------------------------------
 
THE HIGH YIELD PORTFOLIO
 
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>
                                                            CLASS A
                 ---------------------------------------------------------------------------------------------
                    SIX MONTHS                                                                     PERIOD FROM
                         ENDED                                                    TWO MONTHS     SEPTEMBER 28,
                      JUNE 30,     YEAR ENDED     YEAR ENDED     YEAR ENDED            ENDED             1992*
                          1996   DECEMBER 31,   DECEMBER 31,   DECEMBER 31,     DECEMBER 31,    TO OCTOBER 31,
                   (UNAUDITED)           1995           1994           1993             1992              1992
- --------------------------------------------------------------------------------------------------------------
<S>              <C>             <C>            <C>            <C>            <C>              <C>
NET ASSET
 VALUE,
 BEGINNING OF
 PERIOD          $       10.46   $       9.55   $      11.16   $       9.95   $         9.77   $         10.00
                        ------         ------         ------         ------           ------            ------
INCOME FROM
 INVESTMENT
 OPERATIONS
  Net
   Investment
   Income (1)             0.50           1.14           0.97           0.90             0.14              0.08
  Net Realized
   and
   Unrealized
   Gain (Loss)
   on
   Investments           (0.03)          0.97          (1.40)          1.21             0.19             (0.31)
                        ------         ------         ------         ------           ------            ------
    Total from
     Investment
     Operations           0.47           2.11          (0.43)          2.11             0.33             (0.23)
                        ------         ------         ------         ------           ------            ------
DISTRIBUTIONS
  Net
   Investment
   Income                (0.43)         (1.20)         (0.97)         (0.90)           (0.15)               --
  Net Realized
   Gain                     --             --          (0.21)            --               --                --
                        ------         ------         ------         ------           ------            ------
    Total
  Distributions          (0.43)         (1.20)         (1.18)         (0.90)           (0.15)               --
                        ------         ------         ------         ------           ------            ------
NET ASSET
 VALUE, END OF
 PERIOD          $       10.50   $      10.46   $       9.55   $      11.16   $         9.95   $          9.77
                        ------         ------         ------         ------           ------            ------
                        ------         ------         ------         ------           ------            ------
TOTAL RETURN              4.47%         23.35%         (4.18)%        22.11%            3.41%            (2.30)%
                        ------         ------         ------         ------           ------            ------
                        ------         ------         ------         ------           ------            ------
RATIOS AND
 SUPPLEMENTAL
 DATA:
Net Assets, End
 of Period
 (Thousands)           $87,902        $62,245        $97,223        $74,500          $20,194           $16,950
Ratio of
 Expenses to
 Average Net
 Assets (1)               0.75%**         0.75%         0.75%          0.75%            0.75%**            0.75%**
Ratio of Net
 Investment
 Income to
 Average Net
 Assets (1)               9.68%**        11.09%         9.42%          8.70%            8.96%**            9.89%**
Portfolio
 Turnover Rate              63%            90%            74%           104%              24%                9%
- ---------------
(1) Effect of voluntary expense limitation during the period:
    Per share
     benefit to
     net
     investment
     income              $0.00+         $0.01         $0.001          $0.02            $0.01             $0.01
  Ratios before
  expense
  limitation:
    Expenses to
     Average
     Net Assets           0.85%**         0.83%         0.76%          0.96%            1.62%**            1.23%**
    Net
     Investment
     Income to
     Average
     Net Assets           9.58%**        11.01%         9.41%          8.49%            8.09%**            9.41%**
 
<CAPTION>
- --------------------------------------------------------------------------------------------------------------
</TABLE>
 
<TABLE>
<CAPTION>
<S>                        <C>
                               CLASS B
                           ----------------
                                 JANUARY 2,
                                 1996*** TO
                                   JUNE 30,
                                       1996
                                (UNAUDITED)
- -------------------------------------------
NET ASSET VALUE,
 BEGINNING OF PERIOD       $          10.49
                                     ------
INCOME FROM INVESTMENT
 OPERATIONS
  Net Investment Income
   (2)                                 0.47
  Net Realized and
   Unrealized Loss on
   Investments                        (0.06)
                                     ------
    Total from Investment
     Operations                        0.41
                                     ------
DISTRIBUTIONS
  Net Investment Income               (0.43)
  Net Realized Gain                      --
                                     ------
    Total Distributions               (0.43)
                                     ------
NET ASSET VALUE, END OF
 PERIOD                    $          10.47
                                     ------
                                     ------
TOTAL RETURN                           3.89%
                                     ------
                                     ------
RATIOS AND SUPPLEMENTAL
 DATA:
Net Assets, End of Period
 (Thousands)                         $3,499
Ratio of Expenses to
 Average Net Assets (2)                1.00%**
Ratio of Net Investment
 Income to Average Net
 Assets (2)                            9.27%**
Portfolio Turnover Rate                  63%
- -----------------
(2) Effect of voluntary expense limitation
    during the period:
    Per share benefit to
     net investment
     income                           $0.00+
  Ratios before expense limitation:
    Expenses to Average
     Net Assets                        1.10%**
    Net Investment Income
     to Average Net
     Assets                            9.17%**
</TABLE>
 
- --------------------------------------------------------------------------------
 
  *Commencement of operations.
 
 **Annualized
 
***The Portfolio began offering Class B shares on January 2, 1996.
 
  +Amount is less than $0.01 per share
 
    The accompanying notes are an integral part of the financial statements.
 
- --------------------------------------------------------------------------------
                                      179
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
FINANCIAL HIGHLIGHTS
SELECTED PER SHARE DATA AND RATIOS:
- --------------------------------------------------------------------------------
 
THE MUNICIPAL BOND PORTFOLIO
 
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>
                                                                 CLASS A
                                                    ---------------------------------
                                                         SIX MONTHS       PERIOD FROM
                                                              ENDED       JANUARY 18,
                                                           JUNE 30,             1995*
                                                               1996   TO DECEMBER 31,
                                                        (UNAUDITED)              1995
- -------------------------------------------------------------------------------------
<S>                                                 <C>               <C>
NET ASSET VALUE, BEGINNING OF PERIOD                $         10.37   $         10.00
                                                             ------            ------
INCOME FROM INVESTMENT OPERATIONS
  Net Investment Income (1)                                    0.25              0.44
  Net Realized and Unrealized Gain (Loss) on
   Investments                                                (0.26)             0.42
                                                             ------            ------
    Total from Investment Operations                          (0.01)             0.86
                                                             ------            ------
DISTRIBUTIONS
  Net Investment Income                                       (0.20)            (0.45)
  In Excess of Net Investment Income                             --             (0.00)+
  Net Realized Gain                                              --             (0.04)
                                                             ------            ------
    Total Distributions                                       (0.20)            (0.49)
                                                             ------            ------
NET ASSET VALUE, END OF PERIOD                               $10.16            $10.37
                                                             ------            ------
                                                             ------            ------
TOTAL RETURN                                                  (0.09)%            8.80%
                                                             ------            ------
                                                             ------            ------
RATIOS AND SUPPLEMENTAL DATA:
  Net Assets, End of Period (Thousands)                     $31,869           $45,869
  Ratio of Expenses to Average Net Assets (1)                  0.45%**            0.45%**
  Ratio of Net Investment Income to Average Net
   Assets (1)                                                  4.79%**            4.61%**
  Portfolio Turnover Rate                                        38%              180%
- ---------------
(1) Effect of voluntary expense limitation during the period:
   Per share benefit to net investment income                 $0.02             $0.03
  Ratios before expense limitation:
   Expenses to Average Net Assets                              0.74%**            0.73%**
   Net Investment Income to Average Net Assets                 4.50%**            4.33%**
 
<CAPTION>
- -------------------------------------------------------------------------------------
</TABLE>
 
<TABLE>
<CAPTION>
<S>                                                 <C>
                                                        CLASS B
                                                    ---------------
                                                         JANUARY 2,
                                                         1996*** TO
                                                           JUNE 30,
                                                               1996
                                                        (UNAUDITED)
- -------------------------------------------------------------------
NET ASSET VALUE, BEGINNING OF PERIOD                $         10.37
                                                             ------
INCOME FROM INVESTMENT OPERATIONS
  Net Investment Income (2)                                    0.22
  Net Realized and Unrealized Loss on Investments             (0.23)
                                                             ------
    Total from Investment Operations                          (0.01)
                                                             ------
DISTRIBUTIONS
  Net Investment Income                                       (0.20)
                                                             ------
NET ASSET VALUE, END OF PERIOD                      $         10.16
                                                             ------
                                                             ------
TOTAL RETURN                                                  (0.10)%
                                                             ------
                                                             ------
RATIOS AND SUPPLEMENTAL DATA:
Net Assets, End of Period (Thousands)                          $168
Ratio of Expenses to Average Net Assets (2)                    0.70%**
Ratio of Net Investment Income to Average Net
 Assets (2)                                                    4.63%**
Portfolio Turnover Rate                                          38%
- ---------------
 (2) Effect of voluntary expense limitation during the period:
    Per share benefit to net investment income                $0.01
    Ratios before expense limitation:
    Expenses to Average Net Assets                             1.00%**
    Net Investment Income to Average Net Assets                4.33%**
</TABLE>
 
- --------------------------------------------------------------------------------
 
  *Commencement of operations.
 
 **Annualized
 
***The Portfolio began offering Class B shares on January 2, 1996.
 
  +Amount is less than $0.01 per share.
 
    The accompanying notes are an integral part of the financial statements.
 
- --------------------------------------------------------------------------------
                                      180
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
FINANCIAL HIGHLIGHTS
SELECTED PER SHARE DATA AND RATIOS:
- --------------------------------------------------------------------------------
 
THE MONEY MARKET PORTFOLIO
 
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>
                       SIX MONTHS                                                      TWO MONTHS
                            ENDED      YEAR ENDED      YEAR ENDED      YEAR ENDED           ENDED      YEAR ENDED      YEAR ENDED
                    JUNE 30, 1996    DECEMBER 31,    DECEMBER 31,    DECEMBER 31,    DECEMBER 31,     OCTOBER 31,     OCTOBER 31,
                      (UNAUDITED)            1995            1994            1993            1992            1992            1991
- ---------------------------------------------------------------------------------------------------------------------------------
<S>                <C>              <C>             <C>             <C>             <C>             <C>             <C>
NET ASSET VALUE,
 BEGINNING OF
 PERIOD            $        1.000   $       1.000   $       1.000   $       1.000   $       1.000   $       1.000   $       1.000
                   --------------   -------------   -------------   -------------   -------------   -------------   -------------
INCOME FROM
 INVESTMENT
 OPERATIONS
  Net Investment
   Income (1)               0.024           0.054           0.040           0.027           0.005           0.039           0.062
                   --------------   -------------   -------------   -------------   -------------   -------------   -------------
DISTRIBUTIONS
  Net Investment
   Income                  (0.024)         (0.054)         (0.040)         (0.027)         (0.005)         (0.039)         (0.062)
  In Excess of
   Net Investment
   Income                      --              --              --           0.000+             --              --              --
                   --------------   -------------   -------------   -------------   -------------   -------------   -------------
    Total
    Distributions          (0.024)         (0.054)         (0.040)         (0.027)         (0.005)         (0.039)         (0.062)
                   --------------   -------------   -------------   -------------   -------------   -------------   -------------
Net Asset Value,
 End of Period     $        1.000   $       1.000   $       1.000   $       1.000   $       1.000   $       1.000   $       1.000
                   --------------   -------------   -------------   -------------   -------------   -------------   -------------
                   --------------   -------------   -------------   -------------   -------------   -------------   -------------
TOTAL RETURN                 2.46%           5.51%           3.84%           2.76%           0.50%           3.77%           6.37%
                   --------------   -------------   -------------   -------------   -------------   -------------   -------------
                   --------------   -------------   -------------   -------------   -------------   -------------   -------------
RATIOS AND
 SUPPLEMENTAL
 DATA:
Net Assets, End
 of Period
 (Thousands)       $    1,062,384   $     836,693   $     690,503   $     657,163   $     599,172   $     612,968   $     607,087
Ratio of Expenses
 to Average Net
 Assets (1)                  0.51%**          0.51%          0.49%           0.53%           0.55%**          0.52%          0.53%
Ratio of Net
 Investment
 Income to
 Average
  Net Assets (1)             4.89%**          5.37%          3.77%           2.71%           3.11%**          3.74%          6.11%
- -----------------
(1) Effect of voluntary expense limitation during the period:
    Per share
     benefit to
     net
     investment
     income                   N/A             N/A             N/A   $       0.000+  $       0.000+            N/A             N/A
   Ratios before
 expense
 limitation:
    Expenses to
     Average Net
     Assets                   N/A             N/A             N/A            0.54%           0.59%**           N/A            N/A
    Net
     Investment
     Income to
     Average Net
     Assets                   N/A             N/A             N/A            2.70%           3.07%**           N/A            N/A
- ---------------------------------------------------------------------------------------------------------------------------------
**Annualized
 +Amount is less than $0.001 per
 share.
- ---------------------------------------------------------------------------------------------------------------------------------
 
THE MUNICIPAL MONEY MARKET PORTFOLIO
 
<CAPTION>
- -------------------------------------------------------------------------------------------
                       SIX MONTHS                                                      TWO MONTHS
                            ENDED      YEAR ENDED      YEAR ENDED      YEAR ENDED           ENDED      YEAR ENDED      YEAR ENDED
                    JUNE 30, 1996    DECEMBER 31,    DECEMBER 31,    DECEMBER 31,    DECEMBER 31,     OCTOBER 31,     OCTOBER 31,
                      (UNAUDITED)            1995            1994            1993            1992            1992            1991
- ---------------------------------------------------------------------------------------------------------------------------------
<S>                <C>              <C>             <C>             <C>             <C>             <C>             <C>
NET ASSET VALUE,
 BEGINNING OF
 PERIOD            $        1.000   $       1.000   $       1.000   $       1.000   $       1.000   $       1.000   $       1.000
                   --------------   -------------   -------------   -------------   -------------   -------------   -------------
INCOME FROM
 INVESTMENT
 OPERATIONS
  Net Investment
   Income (1)               0.015           0.034           0.020           0.019           0.004           0.026           0.043
                   --------------   -------------   -------------   -------------   -------------   -------------   -------------
DISTRIBUTIONS
  Net Investment
   Income                  (0.015)         (0.034)         (0.020)         (0.019)         (0.004)         (0.026)         (0.043)
  In Excess of
   Net Investment
   Income                      --              --              --          (0.000)+            --              --              --
                   --------------   -------------   -------------   -------------   -------------   -------------   -------------
    Total
    Distributions          (0.015)         (0.034)         (0.020)         (0.019)         (0.004)         (0.026)         (0.043)
                   --------------   -------------   -------------   -------------   -------------   -------------   -------------
NET ASSET VALUE,
 END OF PERIOD     $        1.000   $       1.000   $       1.000   $       1.000   $       1.000   $       1.000   $       1.000
                   --------------   -------------   -------------   -------------   -------------   -------------   -------------
                   --------------   -------------   -------------   -------------   -------------   -------------   -------------
TOTAL RETURN                 1.51%           3.44%           2.44%           1.91%           0.37%           2.74%           4.35%
                   --------------   -------------   -------------   -------------   -------------   -------------   -------------
                   --------------   -------------   -------------   -------------   -------------   -------------   -------------
RATIOS AND
 SUPPLEMENTAL
 DATA:
Net Assets, End
 of Period
 (Thousands)             $770,065        $451,519        $359,444        $266,524        $208,866        $206,691        $166,953
Ratio of Expenses
 to Average Net
 Assets (1)                  0.52%**          0.52%          0.51%           0.54%           0.57%**          0.55%          0.56%
Ratio of Net
 Investment
 Income to
 Average Net
 Assets (1)                  3.04%**          3.38%          2.42%           1.89%           2.31%**          2.66%          4.18%
- -----------------
(1)Effect of voluntary expense limitation during the period:
    Per share
     benefit to
     net
     investment
     income                   N/A             N/A             N/A   $       0.000+  $       0.000+            N/A             N/A
   Ratios before
 expense
 limitation:
    Expenses to
     Average Net
     Assets                   N/A             N/A             N/A            0.56%           0.67%**           N/A            N/A
    Net Investment Income to
     Average Net Assets       N/A             N/A             N/A            1.87%           2.21%**           N/A            N/A
</TABLE>
 
- --------------------------------------------------------------------------------
**Annualized
 +Amount is less than $0.001 per share.
 
    The accompanying notes are an integral part of the financial statements.
 
- --------------------------------------------------------------------------------
                                      181
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
NOTES TO FINANCIAL STATEMENTS (UNAUDITED)
JUNE 30, 1996
- --------------------------------------------------------------------------------
 
Morgan Stanley Institutional Fund, Inc. (the "Fund") is registered under the
Investment Company Act of 1940, as amended, as an open-end management investment
company. As of June 30, 1996, the Fund was comprised of 25 separate active,
diversified and non-diversified portfolios (individually referred to as the
"Portfolio," collectively as the "Portfolios"). During the six months ended June
30, 1996, the International Magnum Portfolio commenced operations on March 15,
1996. On January 2, 1996, each Portfolio (with the exception of the
International Small Cap, Money Market and Municipal Money Market Portfolios)
began offering an additional class of shares -- Class B. All the shares of these
Portfolios outstanding prior to January 2, 1996, were redesignated Class A
shares on January 2, 1996. Both classes of shares have identical voting,
dividend, liquidation and other rights. Please refer to the manager's reports
included elsewhere in this report for a description of each Portfolio's
investment objectives.
 
A. The following significant accounting policies are in conformity with
generally accepted accounting principles for investment companies. Such policies
are consistently followed by the Fund in the preparation of the financial
statements. Generally accepted accounting principles may require management to
make estimates and assumptions that affect the reported amounts and disclosures
in the financial statements. Actual results may differ from those estimates.
 
1. SECURITY VALUATION: Equity securities listed on a U.S. exchange and equity
securities traded on NASDAQ are valued at the latest quoted sales price on the
valuation date. Securities listed on a foreign exchange are valued at their
closing price. Unlisted securities and listed securities not traded on the
valuation date for which market quotations are readily available are valued at
the mean between the current bid and asked prices obtained from reputable
brokers. Bonds and other fixed income securities may be valued according to the
broadest and most representative market. In addition, bonds and other fixed
income securities may be valued on the basis of prices provided by a pricing
service which are based primarily on institutional size trading in similar
groups of securities. Debt securities purchased with remaining maturities of 60
days or less are valued at amortized cost, if it approximates market value.
Securities owned by the Money Market and Municipal Money Market Portfolios are
stated at amortized cost, which approximates market value. All other securities
and assets for which market values are not readily available, including
restricted securities, are valued at fair value as determined in good faith by
the Board of Directors, although the actual calculations may be done by others.
 
2. INCOME TAXES: It is each Portfolio's intention to qualify as a regulated
investment company and distribute all of its taxable and tax-exempt income.
Accordingly, no provision for Federal income taxes is required in the financial
statements.
 
A Portfolio may be subject to taxes imposed by countries in which it invests.
Such taxes are generally based on income and/or gains earned or repatriated.
Taxes are accrued and applied to net investment income, net realized gains and
net unrealized appreciation as such income and/or gains is earned.
 
3. REPURCHASE AGREEMENTS: In connection with transactions in repurchase
agreements, a bank as custodian for the Fund takes possession of the underlying
securities, with a market value at least equal to the amount of the repurchase
transaction, including principal and accrued interest. To the extent that any
repurchase transaction exceeds one business day, the value of the collateral is
marked-to-market on a daily basis to determine the adequacy of the collateral.
In the event of default on the obligation to repurchase, the Fund has the right
to liquidate the collateral and apply the proceeds in satisfaction of the
obligation. In the event of default or bankruptcy by the counterparty to the
agreement, realization and/or retention of the collateral or proceeds may be
subject to legal proceedings.
 
4. REVERSE REPURCHASE AGREEMENTS: In order to leverage the Portfolio, the
Emerging Markets Debt Portfolio may enter into reverse repurchase agreements
with institutions that the Portfolio's investment adviser has determined are
creditworthy. Under a reverse repurchase agreement, the Portfolio sells
securities and agrees to repurchase them at a mutually agreed upon date and
price. Reverse repurchase agreements involve the risk that the market value of
the securities purchased with the proceeds from the sale of securities received
by the Portfolio may decline below the price of the securities the Portfolio is
obligated to repurchase. Securities subject to repurchase under reverse
repurchase agreements are designated as such in the Statement of Net Assets.
 
At June 30, 1996 the Emerging Markets Debt Portfolio had reverse repurchase
agreements outstanding as follows:
 
<TABLE>
<CAPTION>
                                                  MATURITY IN
                                                    30 TO 90
                                                      DAYS
                                                  ------------
<S>                                               <C>
Maturity Amount.................................   $16,465,000
                                                  ------------
Market Value of Assets Sold Under
 Agreements.....................................   18,879,000
Weighted Average Interest Rate..................       5.875%
                                                  ------------
</TABLE>
 
- --------------------------------------------------------------------------------
                                      182
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
NOTES TO FINANCIAL STATEMENTS (UNAUDITED)(CONT.)
JUNE 30, 1996
- --------------------------------------------------------------------------------
 
The average weekly balance of reverse repurchase agreements outstanding during
the six months ended June 30, 1996 was approximately $12,450,000, at a weighted
average interest rate of 6.065%.
 
5. FOREIGN CURRENCY TRANSLATION AND FOREIGN INVESTMENTS: The books and records
of the Fund are maintained in U.S. dollars. Foreign currency amounts are
translated into U.S. dollars at the mean of the bid and asked prices of such
currencies against U.S. dollars last quoted by a major bank as follows:
 
    - investments, other assets and liabilities at the prevailing rates of
      exchange on the valuation date;
 
    - investment transactions and investment income at the prevailing rates of
      exchange on the dates of such transactions.
 
Although the net assets of the Fund are presented at the foreign exchange rates
and market values at the close of the period, the Fund does not isolate that
portion of the results of operations arising as a result of changes in the
foreign exchange rates from the fluctuations arising from changes in the market
prices of the securities held at period end. Similarly, the Fund does not
isolate the effect of changes in foreign exchange rates from the fluctuations
arising from changes in the market prices of securities sold during the period.
Accordingly, realized and unrealized foreign currency gains (losses) are
included in the reported net realized and unrealized gains (losses) on
investment transactions and balances. However, pursuant to U.S. Federal income
tax regulations, gains and losses from certain foreign currency transactions are
treated as ordinary income for U.S. Federal income tax purposes.
 
Net realized gains (losses) on foreign currency transactions represent net
foreign exchange gains (losses) from forward foreign currency exchange
contracts, disposition of foreign currencies, currency gains or losses realized
between the trade and settlement dates on securities transactions, and the
difference between the amount of investment income and foreign withholding taxes
recorded on the Fund's books and the U.S. dollar equivalent amounts actually
received or paid. Net unrealized currency gains (losses) from valuing foreign
currency denominated assets and liabilities at period end exchange rates are
reflected as a component of unrealized appreciation (depreciation) on the
Statement of Net Assets. The change in net unrealized currency gains (losses)
for the period is reflected on the Statement of Operations.
 
Foreign security and currency transactions may involve certain considerations
and risks not typically associated with those of U.S. dollar denominated
transactions as a result of, among other factors, the possibility of lower
levels of governmental supervision and regulation of foreign securities markets
and the possibility of political or economic instability.
 
Prior governmental approval for foreign investments may be required under
certain circumstances in some countries, and the extent of foreign investment in
domestic companies may be subject to limitation in other countries. Foreign
ownership limitations also may be imposed by the charters of individual
companies to prevent, among other concerns, violation of foreign investment
limitations. As a result, an additional class of shares (identified as "Foreign"
in the Statement of Net Assets) may be created and offered for investment. The
"local" and "foreign" shares' market values may differ.
 
6. FORWARD FOREIGN CURRENCY EXCHANGE CONTRACTS: Certain Portfolios may enter
into forward foreign currency exchange contracts to attempt to protect
securities and related receivables and payables against changes in future
foreign currency exchange rates. A forward foreign currency exchange contract is
an agreement between two parties to buy or sell currency at a set price on a
future date. The market value of the contract will fluctuate with changes in
currency exchange rates. The contract is marked-to-market daily using the
forward rate and the change in market value is recorded by the Portfolios as
unrealized gain or loss. The Portfolio records realized gains or losses when the
contract is closed equal to the difference between the value of the contract at
the time it was opened and the value at the time it was closed. Risk may arise
upon entering into these contracts from the potential inability of
counterparties to meet the terms of their contracts and is generally limited to
the amount of the unrealized gain on the contracts, if any, at the date of
default. Risks may also arise from unanticipated movements in the value of a
foreign currency relative to the U.S. dollar.
 
7. FORWARD COMMITMENTS AND WHEN-ISSUED/DELAYED DELIVERY SECURITIES: Each
Portfolio may make forward commitments to purchase or sell securities. Payment
and delivery for securities which have been purchased or sold on a forward
commitment basis can take place a month or more (not to exceed 120 days) after
the date of the transaction. Additionally, certain Portfolios may purchase
securities on a when-issued or delayed-delivery basis. Securities purchased on a
when-issued or delayed delivery basis are purchased for delivery beyond the
normal settlement date at a stated price and yield, and no income accrues to the
Portfolio on such securities prior to delivery. When the Portfolio enters into a
purchase transaction on a when-issued or delayed delivery basis, it establishes
a segregated account in which it maintains liquid assets in an amount at least
equal in value to the Portfolio's
 
- --------------------------------------------------------------------------------
                                      183
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
NOTES TO FINANCIAL STATEMENTS (UNAUDITED)(CONT.)
JUNE 30, 1996
- --------------------------------------------------------------------------------
commitments to purchase such securities. Purchasing securities on a forward
commitment or when-issued or delayed-delivery basis may involve a risk that the
market price at the time of delivery may be lower than the agreed upon purchase
price, in which case there could be an unrealized loss at the time of delivery.
 
8. LOAN AGREEMENTS: Certain Portfolios may invest in fixed and floating rate
loans ("Loans") arranged through private negotiations between an issuer of
sovereign debt obligations and one or more financial institutions ("Lenders")
deemed to be creditworthy by the investment adviser. The Portfolio's investments
in Loans may be in the form of participations in Loans ("Participations") or
assignments of all or a portion of Loans ("Assignments") from third parties. The
Portfolio's investment in Participations typically results in the Portfolio
having a contractual relationship with only the Lender and not with the
borrower. The Portfolio has the right to receive payments of principal, interest
and any fees to which it is entitled only from the Lender selling the
Participation and only upon receipt by the Lender of the payments from the
borrower. The Portfolio generally has no right to enforce compliance by the
borrower with the terms of the loan agreement. As a result, the Portfolio may be
subject to the credit risk of both the borrower and the Lender that is selling
the Participation. When the Portfolio purchases Assignments from Lenders, it
acquires direct rights against the borrower on the Loan. Because Assignments are
arranged through private negotiations between potential assignees and potential
assignors, the rights and obligations acquired by the Portfolio as the purchaser
of an Assignment may differ from, and be more limited than, those held by the
assigning Lender.
 
9. SHORT SALES: The Aggressive Equity and Emerging Markets Debt Portfolios may
sell securities short. A short sale is a transaction in which the Portfolio
sells securities it may or may not own, but has borrowed, in anticipation of a
decline in the market price of the securities. The Portfolio is obligated to
replace the borrowed securities at the market price at the time of replacement.
The Portfolio may have to pay a premium to borrow the securities as well as pay
any dividends or interest payable on the securities until they are replaced. The
Portfolio's obligation to replace the securities borrowed in connection with a
short sale will generally be secured by collateral deposited with the broker
that consists of cash, U.S. government securities or other liquid, high grade
debt obligations. In addition, the Portfolio will place in a segregated account
with its Custodian an amount of cash, U.S. government securities or other liquid
high grade debt obligations equal to the difference, if any, between (1) the
market value of the securities sold at the time they were sold short and (2) any
cash, U.S. government securities or other liquid high grade debt obligations
deposited as collateral with the broker in connection with the short sale (not
including the proceeds of the short sale). Short sales by the Portfolio involve
certain risks and special considerations. Possible losses from short sales
differ from losses that could be incurred from a purchase of a security, because
losses from short sales may be unlimited, whereas losses from purchases cannot
exceed the total amount invested.
 
10. PURCHASED AND WRITTEN OPTIONS: Certain Portfolios may write covered call and
put options on their securities. Premiums are received and are recorded as
liabilities, and subsequently adjusted to the current value of the options
written. Premiums received from writing options which expire are treated as
realized gains. Premiums received from writing options which are exercised or
are canceled in closing purchase transactions are offset against the proceeds or
amount paid on the transaction to determine the realized gain or loss. By
writing a covered call option, a Portfolio foregoes in exchange for the premium
the opportunity for capital appreciation above the exercise price should the
market price of the underlying security increase. By writing a covered put
option, a Portfolio, in exchange for the premium, accepts the risk of a decline
in the market value of the underlying security below the exercise price.
 
Certain Portfolios may purchase call and put options on their portfolio
securities. Each Portfolio may purchase call options to protect against an
increase in the price of the security it anticipates purchasing. Each Portfolio
may purchase put options on their securities to protect against a decline in the
value of the security or to close out covered written put positions. Possible
losses from purchased options cannot exceed the total amount invested.
 
11. SECURITY LENDING: Certain Portfolios may lend investment securities to
certain qualified institutional investors who borrow securities in order to
complete certain transactions. By lending investment securities, a Portfolio
attempts to increase its net investment income through the receipt of interest
on the loan. Any gain or loss in the market price of the securities loaned that
might occur during the term of the loan would be for the account of the
Portfolio. Risks of delay in recovery of the securities or even loss of rights
in the collateral may occur should the borrower of the securities fail
financially. Risks may also arise to the extent that the value of the collateral
decreases below the value of the securities loaned.
 
Portfolios that lend securities receive cash, securities issued or guaranteed by
the U.S. Government, or
 
- --------------------------------------------------------------------------------
                                      184
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
NOTES TO FINANCIAL STATEMENTS (UNAUDITED)(CONT.)
JUNE 30, 1996
- --------------------------------------------------------------------------------
letters of credit as collateral in an amount equal to or exceeding 100% of the
current market value of the loaned securities. Any cash received as collateral
is invested in interest bearing repurchase agreements with approved
counterparties. A portion of the interest received on the repurchase agreements
is retained by the Portfolio and the remainder is rebated to the borrower of the
securities. The net amount of interest earned and interest rebated is included
in the Statement of Operations as interest income. The value of loaned
securities and related collateral outstanding at June 30, 1996 are as follows:
 
<TABLE>
<CAPTION>
                                  VALUE OF LOANED   VALUE OF
                                    SECURITIES     COLLATERAL
PORTFOLIO                              (000)          (000)
- --------------------------------  ---------------  -----------
<S>                               <C>              <C>
Active Country Allocation.......     $  33,704      $  39,595
International Equity............       223,355        286,019
</TABLE>
 
Morgan Stanley Trust Company administers the security lending program and has
earned fees for its services in the amount of $43,700 during the period ending
June 30, 1996.
 
12. STRUCTURED SECURITIES: The Emerging Markets Debt Portfolio may invest in
interests in entities organized and operated solely for the purpose of
restructuring the investment characteristics of sovereign debt obligations. This
type of restructuring involves the deposit with or purchase by an entity of
specified instruments and the issuance by that entity of one or more classes of
securities ("Structured Securities") backed by, or representing interests in,
the underlying instruments. Structured Securities, invested in by the Emerging
Markets Debt Portfolio, generally will have credit risk equivalent to that of
the underlying instruments. Structured Securities are typically sold in private
placement transactions with no active trading market. Investments in Structured
Securities may be more volatile than their underlying instruments, however, any
loss is limited to the amount of the original investment.
 
13. OTHER: Security transactions are accounted for on the date the securities
are purchased or sold. Realized gains and losses on the sale of investment
securities are determined on the specific identified cost basis. Dividend income
is recorded on the ex-dividend date (except for certain foreign dividends which
may be recorded as soon as the Fund is informed of such dividends). Interest
income is recognized on the accrual basis except where collection is in doubt.
Discounts and premiums on securities purchased (other than mortgage-backed
securities) are amortized according to the effective yield method over their
respective lives. Most expenses of the Fund can be directly attributed to a
particular Portfolio. Expenses which cannot be directly attributed are
apportioned among the Portfolios based upon relative average net assets. Income,
expenses (other than class specific expenses) and realized and unrealized gains
or losses are allocated to each class of shares based upon their relative net
assets. Dividends to the shareholders of the Money Market and the Municipal
Money Market Portfolios are accrued daily and are distributed on or about the
15th of each month. Distributions for the remaining Portfolios are recorded on
the ex-date.
 
The U.S. Real Estate Portfolio owns shares of real estate investment trusts
("REITs") which report information on the source of their distributions
annually. A portion of distributions received from REITs during the year is
estimated to be a return of capital and is recorded as a reduction of their
cost.
 
The amount and character of income and capital gain distributions to be paid by
the Fund are determined in accordance with Federal income tax regulations which
may differ from generally accepted accounting principles. These differences are
primarily due to differing book and tax treatments for the timing of the
recognition of gains or losses on securities and forward foreign currency
exchange contracts, the timing of the deductibility of certain foreign taxes and
dividends received from real estate investment trusts.
 
Permanent book and tax basis differences relating to shareholder distributions
may result in reclassifications among undistributed net investment income
(loss), accumulated net realized gain (loss) and paid in capital.
 
Permanent book-tax differences, if any, are not included in ending undistributed
(distributions in excess of) net investment income/accumulated net investment
loss for the purpose of calculating net investment income (loss) per share in
the Financial Highlights.
 
A transaction fee of one percent is charged on subscriptions and redemptions of
capital shares of the International Small Cap Portfolio. Such fees are paid to
or retained by the Portfolio and included in paid in capital. During the six
months ended June 30, 1996, such transaction fees totaled approximately
$343,000.
 
B. ADVISER: Morgan Stanley Asset Management Inc. (the "Adviser" or "MSAM")
provides investment advisory services to the Fund under the terms of an
Investment Advisory and Management Agreement (the "Agreement") at the annual
rates of average daily net assets indicated below. MSAM has agreed to reduce
fees payable to it and to reimburse the Portfolios, if
 
- --------------------------------------------------------------------------------
                                      185
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
NOTES TO FINANCIAL STATEMENTS (UNAUDITED)(CONT.)
JUNE 30, 1996
- --------------------------------------------------------------------------------
necessary, if the annual operating expenses, as defined, expressed as a
percentage of average daily net assets, exceed the maximum ratios indicated as
follows:
 
<TABLE>
<CAPTION>
                                                 MAXIMUM EXPENSE RATIO
                                   ADVISORY    --------------------------
PORTFOLIO                            FEE         CLASS A       CLASS B
                                 ------------  ------------  ------------
<S>                              <C>           <C>           <C>
Active Country Allocation......         .65%          .80%         1.05%
Asian Equity...................         .80          1.00          1.25
Emerging Markets...............        1.25          1.75          2.00
European Equity................         .80          1.00          1.25
Global Equity..................         .80          1.00          1.25
Gold...........................        1.00          1.25          1.50
International Equity...........         .80          1.00          1.25
International Magnum...........         .80          1.00          1.25
International Small Cap........         .95          1.15             N/A
Japanese Equity................         .80          1.00          1.25
Latin American.................        1.10          1.70          1.95
Aggressive Equity..............         .80          1.00          1.25
Emerging Growth................        1.00          1.25          1.50
Equity Growth..................         .60           .80          1.05
Small Cap Value Equity.........         .85          1.00          1.25
U.S. Real Estate...............         .80          1.00          1.25
Value Equity...................         .50           .70           .95
Balanced.......................         .50           .70           .95
Emerging Markets Debt..........        1.00          1.75          2.00
Fixed Income...................         .35           .45           .60
Global Fixed Income............         .40           .50           .65
High Yield.....................         .50           .75          1.00
Municipal Bond.................         .35           .45           .70
Money Market...................         .30           .55           N/A
Municipal Money Market.........         .30           .57             N/A
</TABLE>
 
Sun Valley Gold Company is the sub-adviser ("Sub-Adviser") of the Gold
Portfolio. The Sub-Adviser is entitled to receive an annual sub-advisory fee in
an amount equal to .40% of the average daily net assets of the Portfolio. The
Sub-Adviser has agreed to a proportionate reduction in its fees if the Adviser
is required to waive its fees or to reimburse the Portfolio.
 
C. ADMINISTRATOR: MSAM also provides the Fund with administrative services
pursuant to an administrative agreement, for a monthly fee which on an annual
basis equals 0.15% of the average daily net assets of each Portfolio, plus
reimbursement of out-of-pocket expenses. Under an agreement between MSAM and The
Chase Manhattan Bank ("Chase"), through its affiliate Chase Global Funds
Services Company, provides certain administrative services to the Fund. For such
services, MSAM pays Chase a portion of the fee MSAM receives from the Fund.
 
D. DISTRIBUTOR: Morgan Stanley & Co., Incorporated (the "Distributor"), serves
as the Distributor of the Fund and provides all classes of each Portfolio with
distribution services pursuant to separate Distribution Plans (the "Plans") in
accordance with Rule 12b-1 under the Investment Company Act of 1940. Under the
Plans, the Distributor is entitled to receive from each Portfolio, except the
International Small Cap Portfolio, Money Market Portfolio and Municipal Money
Market Portfolio, a distribution fee, which is accrued daily and paid quarterly,
at an annual rate of 0.25% of the Class B shares' average daily net assets. The
Distributor may voluntarily waive from time to time all or any portion of its
distribution fee. The Distributor has agreed to reduce its fees to 0.15% of the
Class B shares' average daily net assets for the Fixed Income and Global Fixed
Income Portfolios.
 
E. CUSTODIAN: Morgan Stanley Trust Company ("MSTC") acts as custodian for the
Fund's assets held outside the United States in accordance with a custodian
agreement. Custodian fees are computed and payable monthly based on assets held,
investment purchases and sales activity, an account maintenance fee, plus
reimbursement for certain out-of-pocket expenses. MSTC, the Adviser and the
Distributor are wholly-owned subsidiaries of Morgan Stanley Group, Inc.
 
For the six months ended June 30, 1996, the following Portfolios incurred
custody fees and had amounts payable to MSTC at June 30, 1996:
 
<TABLE>
<CAPTION>
                                MSTC CUSTODY        CUSTODY
                                    FEES        FEES PAYABLE TO
                                  INCURRED           MSTC
                                    (000)            (000)
                                -------------  -----------------
<S>                             <C>            <C>
Active Country Allocation.....    $     118        $      83
Asian Equity..................          410              250
Emerging Markets..............        1,352              670
European Equity...............           41               23
Global Equity.................           15               10
Gold..........................            7                1
International Equity..........          295              151
International Magnum..........           33               28
International Small Cap.......           60               29
Japanese Equity...............           21               12
Latin American................           32               26
Emerging Markets Debt.........          117               58
Global Fixed Income...........           21               11
</TABLE>
 
In addition, for the six months ended June 30, 1996, the following Portfolios
have earned interest income and incurred interest expense on balances with MSTC
as follows:
 
<TABLE>
<CAPTION>
                               INTEREST INCOME     INTEREST EXPENSE
                                    (000)                (000)
                             -------------------  -------------------
<S>                          <C>                  <C>
Active Country
 Allocation................       $       1            $      --
Asian Equity...............              --                    3
Emerging Markets...........              10                   74
European Equity............              31                   --
Global Equity..............               1                   --
International Magnum.......              --                    1
Japanese Equity............               1                   --
Emerging Markets Debt......              14                  127
Global Fixed Income........              19                    2
</TABLE>
 
At June 30, 1996, the Emerging Markets Portfolio owned shares of affiliated
funds for which the Portfolio earned dividend income of approximately $60,000.
 
- --------------------------------------------------------------------------------
                                      186
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
NOTES TO FINANCIAL STATEMENTS (UNAUDITED)(CONT.)
JUNE 30, 1996
- --------------------------------------------------------------------------------
 
F. PURCHASES AND SALES: During the six months ended June 30, 1996, purchases and
sales of investment securities other than long-term U.S. Government securities
and short-term investments were:
 
<TABLE>
<CAPTION>
                                           PURCHASES     SALES
PORTFOLIO                                    (000)       (000)
- ----------------------------------------  -----------  ---------
<S>                                       <C>          <C>
Active Country Allocation...............   $  65,346   $  56,059
Asian Equity............................     223,601     101,506
Emerging Markets........................     452,594     264,829
European Equity.........................      59,633       7,550
Global Equity...........................       8,084      14,652
Gold....................................      30,865       3,908
International Equity....................     396,026     147,853
International Magnum....................      57,482         378
International Small Cap.................      43,749      39,139
Japanese Equity.........................      99,029       5,855
Latin American..........................      20,626      14,510
Aggressive Equity.......................      80,887      74,204
Emerging Growth.........................      19,898      45,817
Equity Growth...........................     196,244     192,645
Small Cap Value Equity..................       6,816      13,440
U.S. Real Estate........................     129,338      86,284
Value Equity............................      21,464      45,281
Balanced................................       1,063       8,630
Emerging Markets Debt...................     460,972     470,339
Fixed Income............................     184,644     163,508
Global Fixed Income.....................     129,067     132,908
High Yield..............................      63,351      42,703
Municipal Bond..........................      15,338      27,811
</TABLE>
 
Purchases and sales during the six months ended June 30, 1996 of long-term U.S.
Government securities occurred in the Fixed Income and Global Fixed Income
Portfolios only and totaled:
 
<TABLE>
<CAPTION>
                                            PURCHASES     SALES
PORTFOLIO                                     (000)       (000)
- -----------------------------------------  -----------  ---------
<S>                                        <C>          <C>
Fixed Income.............................   $  21,888   $  17,971
Global Fixed Income......................      32,802      21,597
</TABLE>
 
During the six months ended June 30, 1996, the following Portfolios paid
brokerage commissions to Morgan Stanley & Co., Incorporated, an affiliated
broker/dealer, of approximately:
 
<TABLE>
<CAPTION>
                                                    BROKERAGE
                                                   COMMISSION
PORTFOLIO                                             (000)
- -----------------------------------------------  ---------------
<S>                                              <C>
Asian Equity...................................     $     112
Emerging Markets...............................            53
European Equity................................             3
Global Equity..................................             4
International Equity...........................            35
Japanese Equity................................            67
Latin American.................................             2
</TABLE>
 
G. OTHER: At June 30, 1996, cost and unrealized appreciation (depreciation) for
U.S. Federal income tax purposes of the investments of each Portfolio were:
 
<TABLE>
<CAPTION>
                                                                 NET
                                                               APPREC.
                              COST      APPREC.    DEPREC.    (DEPREC.)
PORTFOLIO                     (000)      (000)      (000)       (000)
- --------------------------  ---------  ---------  ---------  -----------
<S>                         <C>        <C>        <C>        <C>
Active Country
 Allocation...............  $ 161,105  $  15,840  $  (4,724)  $  11,116
Asian Equity..............    389,990     58,667    (11,193)     47,474
Emerging Markets..........  1,223,212    222,519   (104,240)    118,279
European Equity...........    122,862     14,649     (1,898)     12,751
Global Equity.............     66,721     16,801     (2,883)     13,918
Gold......................     38,642      1,812     (3,838)     (2,026)
International Equity......  1,534,637    418,152    (34,695)    383,457
International Magnum......     63,025      1,628       (668)        960
International Small Cap...    210,041     32,291    (13,046)     19,245
Japanese Equity...........    219,519     12,598     (6,768)      5,830
Latin American............     23,260      4,712       (458)      4,254
Aggressive Equity.........     45,806      2,903       (346)      2,557
Emerging Growth...........     61,667     41,300       (908)     40,392
Equity Growth.............    171,863     22,047     (2,074)     19,973
Small Cap Value Equity....     41,498      7,255       (905)      6,350
U.S. Real Estate..........    119,024      7,142       (852)      6,290
Value Equity..............    118,038     22,667     (4,789)     17,878
Balanced..................     14,008      1,682       (304)      1,378
Emerging Markets Debt.....    203,181     17,390     (7,365)     10,025
Fixed Income..............    160,832      1,804     (2,011)       (207)
Global Fixed Income.......    122,649      1,175     (1,697)       (522)
High Yield................     91,547      1,836     (4,174)     (2,338)
Municipal Bond............     30,587        668        (99)        569
Money Market..............  1,062,158         --         --          --
Municipal Money Market....    776,804         --         --          --
</TABLE>
 
At December 31, 1995, the following Portfolios had available capital loss
carryforwards to offset future net capital gains, to the extent provided by
regulations, through the indicated expiration dates:
 
<TABLE>
<CAPTION>
                                         EXPIRATION DATE
                                          DECEMBER 31,
                                              (000)
                                 -------------------------------
PORTFOLIO                          2001       2002       2003       TOTAL
- -------------------------------     ---     ---------  ---------  ---------
<S>                              <C>        <C>        <C>        <C>
Emerging Markets...............  $      --  $      --  $  33,313  $  33,313
Japanese Equity................         --         --      2,666      2,666
Latin American.................         --         --        224        224
Fixed Income...................         --      8,291         --      8,291
Global Fixed Income............         --      5,293      1,780      7,073
High Yield.....................         --        497      4,145      4,642
Money Market...................         --         13         --         13
Municipal Money Market.........          1          7          1          9
</TABLE>
 
To the extent that capital loss carryovers are used to offset any future net
capital gains realized during the carryover period as provided by U.S. Federal
income tax regulations, no capital gains tax liability will be incurred by a
Portfolio for gains realized and not distributed. To the extent that capital
gains are offset, such gains will not be distributed to the shareholders.
 
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                                      187
<PAGE>
[LOGO]  Morgan Stanley
        Institutional Fund, Inc.
- --------------------------------------------------------------------------------
NOTES TO FINANCIAL STATEMENTS (UNAUDITED)(CONT.)
JUNE 30, 1996
- --------------------------------------------------------------------------------
 
Net capital and net currency losses incurred after October 31 and within the
taxable year are deemed to arise on the first business day of the Portfolio's
next taxable year. For the period from November 1, 1995 to December 31, 1995
certain Portfolios incurred and elected to defer until January 1, 1996 for U.S.
Federal income tax purposes net capital and net currency losses of
approximately:
 
<TABLE>
<CAPTION>
                                               CAPITAL     CURRENCY
                                               LOSSES       LOSSES
PORTFOLIO                                       (000)        (000)
- -------------------------------------------  -----------  -----------
<S>                                          <C>          <C>
Emerging Markets...........................   $      --    $      64
Global Equity..............................          --            2
Latin American.............................           2            6
Emerging Markets Debt......................         245        1,501
High Yield.................................          73           --
Municipal Money Market.....................           1           --
</TABLE>
 
During the six months ended June 30, 1996, the following Portfolio wrote covered
call options as follows:
 
COVERED CALL OPTIONS
 
<TABLE>
<CAPTION>
                                      FACE AMOUNT     PREMIUM
EMERGING MARKETS DEBT PORTFOLIO          (000)         (000)
- -----------------------------------  -------------  -----------
<S>                                  <C>            <C>
Options outstanding at December 31,
 1995..............................    $      --     $      --
Options written during the
 period............................       48,647           721
Options expired during the
 period............................      (32,530)         (392)
Options exercised during the
 period............................      (16,117)         (329)
                                     -------------  -----------
Options outstanding at June 30,
 1996..............................    $      --     $      --
                                     -------------  -----------
                                     -------------  -----------
</TABLE>
 
At June 30, 1996, the net assets of certain Portfolios were substantially
comprised of foreign denominated securities and currency. Changes in currency
exchange rates will affect the U.S. dollar value of and investment income from
such securities.
 
Assets and liabilities, including Portfolio securities and foreign currency
holdings were translated at the following exchange rates as of June 30, 1996:
 
<TABLE>
<S>                                     <C>          <C>        <C>
Argentine Peso........................      0.99963      =      $    1.00
Australian Dollar.....................      1.27235      =      $    1.00
Belgian Franc.........................     31.30000      =      $    1.00
Brazilian Real........................      1.00395      =      $    1.00
British Pound.........................      0.64371      =      $    1.00
Canadian Dollar.......................      1.36455      =      $    1.00
Colombian Peso........................  1,067.00000      =      $    1.00
Danish Krone..........................      5.85550      =      $    1.00
Deutsche Mark.........................      1.52000      =      $    1.00
Finnish Markka........................      4.62905      =      $    1.00
French Franc..........................      5.13900      =      $    1.00
Greek Drachma.........................    240.47000      =      $    1.00
Hong Kong Dollar......................      7.74075      =      $    1.00
Hungarian Forint......................    150.03500      =      $    1.00
Indonesian Rupiah.....................  2,327.50000      =      $    1.00
Irish Pound...........................      0.62602      =      $    1.00
Italian Lira..........................  1,530.84000      =      $    1.00
Japanese Yen..........................    109.32500      =      $    1.00
Korean Won............................    811.20000      =      $    1.00
Malaysian Ringgit.....................      2.49450      =      $    1.00
Mexican Peso..........................      7.58250      =      $    1.00
Moroccan Dirham.......................      8.72285      =      $    1.00
Netherlands Guilder...................      1.70450      =      $    1.00
New Zealand Dollar....................      1.45349      =      $    1.00
Norwegian Krone.......................      6.48655      =      $    1.00
Pakistani Rupee.......................     35.00500      =      $    1.00
Peruvian Sol..........................      2.44300      =      $    1.00
Philippine Peso.......................     26.20000      =      $    1.00
Polish Zloty..........................      2.71710      =      $    1.00
Portuguese Escudo.....................    156.30000      =      $    1.00
Singapore Dollar......................      1.41100      =      $    1.00
Spanish Peseta........................    127.91500      =      $    1.00
Sri Lanka Rupee.......................     55.60000      =      $    1.00
Swedish Krona.........................      6.61490      =      $    1.00
Swiss Franc...........................      1.24950      =      $    1.00
Taiwan Dollar.........................     27.52000      =      $    1.00
Thailand Baht.........................     25.38500      =      $    1.00
Turkish Lira..........................  82,100.00000     =      $    1.00
</TABLE>
 
From time to time, certain Portfolios of the Fund have shareholders that hold a
significant portion of a Portfolio's outstanding shares. Investment activities
of these shareholders could have a material impact on those Portfolios.
 
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                                      188
<PAGE>
                    MORGAN STANLEY INSTITUTIONAL FUND, INC.
 
- -----------------------------------------------------------------------------
 
DIRECTORS
 
Barton M. Biggs
CHAIRMAN OF THE BOARD
 Chairman and Director, Morgan Stanley
 Asset Management Inc. and Morgan Stanley Asset
 Management Limited; Managing Director,
 Morgan Stanley & Co. Incorporated; Director,
 Morgan Stanley Group Inc.
 
Frederick B. Whittemore
VICE-CHAIRMAN OF THE BOARD
 Advisory Director, Morgan Stanley & Co.,
 Incorporated
 
Warren J. Olsen
DIRECTOR AND PRESIDENT
 Principal, Morgan Stanley Asset Management Inc. and
 Morgan Stanley & Co. Incorporated
 
John D. Barrett II
Chairman and Director, Barrett Associates, Inc.
 
Gerard E. Jones
Partner, Richards & O'Neil LLP
 
Andrew McNally IV
Chairman and Chief Executive Officer, Rand McNally
 
Samuel T. Reeves
Chairman of the Board and CEO, Pinacle L.L.C.
 
Fergus Reid
Chairman and Chief Executive Officer, LumeLite Corporation
 
Frederick O. Robertshaw
Of Counsel, Bryan, Cave
 
INVESTMENT ADVISER AND ADMINISTRATOR
 
Morgan Stanley Asset Management Inc.
1221 Avenue of the Americas
New York, New York 10020
 
DISTRIBUTOR
 
Morgan Stanley & Co., Incorporated
1251 Avenue of the Americas
New York, New York 10020
 
CUSTODIANS
 
The Chase Manhattan Bank
770 Broadway
New York, New York 10003
 
Morgan Stanley Trust Company
One Pierrepont Plaza
Brooklyn, New York 11210
 
LEGAL COUNSEL
 
Morgan, Lewis & Bockius LLP
2000 One Logan Square
Philadelphia, Pennsylvania 19103
 
INDEPENDENT ACCOUNTANTS
 
Price Waterhouse LLP
1177 Avenue of the Americas
New York, New York 10036
 
OFFICERS
 
James W. Grisham
VICE PRESIDENT
 
Michael F. Klein
VICE PRESIDENT
 
Harold J. Schaaff, Jr.
VICE PRESIDENT
 
Joseph P. Stadler
VICE PRESIDENT
 
Valerie Y. Lewis
SECRETARY
 
Karl O. Hartmann
ASSISTANT SECRETARY
 
James R. Rooney
TREASURER
 
Joanna M. Haigney
ASSISTANT TREASURER
 
FOR CURRENT PERFORMANCE, CURRENT NET ASSET VALUE, OR FOR ASSISTANCE WITH YOUR
ACCOUNT, PLEASE CONTACT THE FUND AT (800) 548-7786.
 
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                                      189


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