WARBURG PINCUS INSTITUTIONAL FUND INC
N-30D, 1996-12-27
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<PAGE>
<PAGE>
                                     ANNUAL
                                     REPORT
                                October 31, 1996

                     WARBURG PINCUS INSTITUTIONAL FUND, INC.

                         - INTERNATIONAL EQUITY PORTFOLIO

                         - SMALL COMPANY GROWTH PORTFOLIO

                         - EMERGING MARKETS PORTFOLIO
 
 
                                     [Logo]
 
        A  Prospectus  containing more  complete  information, including
        charges  and  expenses  and,   where  applicable,  the   special
        considerations   and   risks   associated   with   international
        investing, may be obtained by calling 800-369-2728 or by writing
        to Warburg Pincus Funds, P.O.  Box 9030, Boston, MA  02205-9030.
        Investors should read the Prospectus carefully before investing.

<PAGE>
<PAGE>
The  views of the Portfolios'  management are as of the  date of the letters and
portfolio holdings described in this annual  report are as of October 31,  1996;
these  views and portfolio holdings may  have changed subsequent to these dates.
Nothing  in  this  annual  report  is  a  recommendation  to  purchase  or  sell
securities.

<PAGE>
<PAGE>
WARBURG PINCUS INSTITUTIONAL FUND, INC. -- INTERNATIONAL EQUITY PORTFOLIO
ANNUAL INVESTMENT ADVISER'S REPORT
- --------------------------------------------------------------------------------
Dear Shareholder:                                              December 11, 1996
 
   The  objective of  Warburg Pincus  Institutional Fund,  Inc. -- International
Equity Portfolio  (the  'Portfolio')  is  long-term  capital  appreciation.  The
Portfolio  aims to tap into  the strong growth potential  of today's world stock
markets by investing primarily in companies whose principal business  activities
and interests are outside the U.S.
   For  the 12 months ended  October 31, 1996, the  Portfolio gained 10.48%, vs.
gains of 12.65% in the Lipper International Funds Index and 10.47% in the Morgan
Stanley Europe, Australasia and Far East ('EAFE') Index.
   The Portfolio's  largest country  weighting  throughout the  Period  remained
Japan,  whose stock  market performed  well through  much of  the 12  months but
suffered in the  latter part  of the  period, primarily  due to  fears that  the
country's economic recovery might be faltering. We believe that Japan's recovery
remains  very  much  intact,  however,  supported  by  a  continued expansionary
monetary policy from the Bank of Japan and, over the longer term, by the ongoing
restructuring of  Japanese industry.  Accordingly, we  maintained the  country's
weighting  in the Portfolio through  the period, as well  as our emphasis on the
machinery & industrial components and retail  sectors, where we believe some  of
the best long-term investment opportunities exist.
   We  hedged,  as a  defensive measure,  most of  the Portfolio's  yen exposure
through the period. This had a  positive effect on the Portfolio's  performance,
as the Japanese currency weakened against the U.S. dollar.
   The Portfolio benefited from positive performances from a number of its other
Asian-Pacific  stocks. Particularly strong performers for the Portfolio included
selected holdings  in Hong  Kong and  Taiwan.  One market  that weighed  on  the
Portfolio's  performance  during  the  12  months  was  South  Korea,  which was
negatively impacted by the country's unsettled political climate and by concerns
over a deteriorating trade balance.  But South Korean stocks remain  inexpensive
and  we believe that the market has good prospects for improvement, thus we have
maintained  its  weighting  in  the  Portfolio.  We  have  also  maintained  the
Portfolio's  general emphasis on  Asian-Pacific markets collectively, reflecting
our positive outlook on their longer-term (i.e., three to five-year)  prospects.
These  economies boast the world's fastest  growth rates and the most attractive
fundamentals (e.g., high domestic savings rates, strong currencies and generally
pro-business governmental policies),  which should, we  believe, result in  some
very attractive investment opportunities.
 
                                       1

 <PAGE>
<PAGE>
WARBURG PINCUS INSTITUTIONAL FUND, INC. -- INTERNATIONAL EQUITY PORTFOLIO
ANNUAL INVESTMENT ADVISER'S REPORT (CONT'D)
- --------------------------------------------------------------------------------
 
   European  equity markets appreciated strongly  during the period, though they
were as a group  underweighted versus the index  and other international  funds.
The  Portfolio  benefited  from  this  broad-based  strength,  with particularly
impressive gains coming from German holdings SGL Carbon and Adidas and from  its
Nordic   stocks  collectively.  The  markets'  performance  notwithstanding,  we
continued to  find attractively  valued companies  on a  selective basis  across
Europe during the period. Further, we believe that lower interest rates stand to
lead  to improved  economic growth  across the  Continent in  1997, resulting in
higher corporate earnings and proportionately more investment opportunities.
 

Richard H. King
Portfolio Manager

 
                                       2

 <PAGE>
<PAGE>
WARBURG PINCUS INSTITUTIONAL FUND, INC. -- INTERNATIONAL EQUITY PORTFOLIO
ANNUAL INVESTMENT ADVISER'S REPORT (CONT'D)
- --------------------------------------------------------------------------------
 
                         GROWTH OF $10,000 INVESTED IN
   WARBURG PINCUS INSTITUTIONAL FUND, INC. -- INTERNATIONAL EQUITY PORTFOLIO
                     SINCE INCEPTION AS OF OCTOBER 31, 1996
 
   The graph below illustrates the hypothetical investment of $10,000 in Warburg
Pincus  Institutional  Fund,  Inc.   --  International  Equity  Portfolio   (the
'Portfolio') from September 1, 1992 (inception) to October 31, 1996, compared to
the  Morgan Stanley -- Europe, Australasia, and Far East Index ('EAFE')* for the
same time period.
 
                                                               AVERAGE ANNUAL
                                                                TOTAL RETURNS
                                                              FOR PERIODS ENDED
                     INSTITUTIONAL INT'L        MS-EAFE            10/31/96

               Sep-92      10,000               10,000             1 YEAR
               Oct-92       9,620.00             9,288.26           10.48%
               Oct-93      13,623.27            12,767.90
               Oct-94      16,705.24            14,057.77      SINCE INCEPTION
               Oct-95      16,232.10            14,006.40         (9/01/92)
               Oct-96      17,932.40            15,473.49           15.03%


<TABLE>
<CAPTION>
                                                                              PORTFOLIO
                                                                              ---------
 
<S>                                                                           <C>
1 Year Total Return (9/30/95-9/30/96)....................................        9.11%
Average Annual Total Return Since Inception (9/01/92-9/30/96)............       15.65%
</TABLE>
 
   Returns are historical and include changes in share price and reinvestment of
dividends and capital gains. Past  performance cannot guarantee future  results.
Returns and share price will fluctuate, and redemption value may be more or less
than original cost.
 
   From  time to time,  the Fund's investment  adviser and co-administrators may
waive some fees and/or reimburse some expenses, without which performance  would
be lower. Waivers and/or reimbursements are subject to change.
 
- ------------
* EAFE  is  an  unmanaged  index  of  international  equities  with  no  defined
  investment objective that is compiled by Morgan Stanley Capital International.
 
                                       3

<PAGE>
<PAGE>
WARBURG PINCUS INSTITUTIONAL FUND, INC. -- SMALL COMPANY GROWTH PORTFOLIO
ANNUAL INVESTMENT ADVISER'S REPORT
- --------------------------------------------------------------------------------
Dear Shareholder:                                              December 11, 1996
 
   The  objective of  Warburg Pincus Institutional  Fund, Inc.  -- Small Company
Growth Portfolio (the 'Portfolio')  is capital growth. The  Portfolio is a  non-
diversified investment company that pursues its objective by investing primarily
in  equity securities  of domestic  companies with  small market capitalizations
(i.e., less than $1 billion at the time of initial purchase).
   For the 10 months ended October 31, 1996 (the Portfolio's inception date  was
December  29, 1995), the  Portfolio gained 29.20%,  vs. a gain  of 9.03% for the
Russell 2000 Index.
   The Portfolio's  outperformance of  its benchmark  resulted from  good  stock
selection  across a  broad range of  industries. Particularly  strong gains came
from the Fund's  business-services stocks,  its largest  area of  concentration.
Collectively,  these companies are benefiting  from businesses' cost-cutting and
outsourcing efforts, a dominant theme  across Corporate America in recent  years
and  one  that shows  few  signs of  slowing.  The Portfolio's  holdings include
companies whose  prospects  we view  particularly  favorably, and  their  strong
performance through the reporting period was encouraging.
   The   Portfolio's  technology  stocks  also  contributed  positively  to  its
performance, notwithstanding the sector's broad  sell-off in June and July.  The
general  argument  for  these  stocks  --  that  technological  advances  afford
corporations the ability to substitute  capital for high-cost labor,  permitting
continued profit expansion despite potentially slower top-line growth -- remains
a  valid one, hence we will continue  to emphasize these stocks in the Portfolio
going forward. Selectivity will remain  critical, however, given the  industry's
rapid  rate  of  evolution and  the  resulting  potential for  new  products and
services to quickly become  obsolete. We believe that  our current holdings  are
well-managed  companies  that  are  well-positioned  strategically  within their
respective areas,  which augurs  well  for their  stock-price performance  on  a
long-term basis.
   Other  significant  contributors to  the  Portfolio's performance  during the
period included its holdings in energy  and oil services, which also were  well-
represented  in  the Portfolio.  One disappointing  area  for the  Portfolio was
health care, a sector  that suffered due to  investor concerns over pricing  and
margin  pressures. Nonetheless, we  continue to view  the group favorably, given
the rapidly aging U.S. population and the potential for proportionally increased
demand  for  health-care  products  and  services,  and  we  believe  that   the
Portfolio's specific holdings have particularly good prospects.
 
<TABLE>
<S>                                         <C>
Elizabeth B. Dater                          Stephen J. Lurito
Co-Portfolio Manager                        Co-Portfolio Manager
</TABLE>
 
                                       4

 <PAGE>
<PAGE>
WARBURG PINCUS INSTITUTIONAL FUND, INC. -- SMALL COMPANY GROWTH PORTFOLIO
ANNUAL INVESTMENT ADVISER'S REPORT (CONT'D)
- --------------------------------------------------------------------------------
 
                         GROWTH OF $10,000 INVESTED IN
WARBURG PINCUS INSTITUTIONAL FUND, INC. -- SMALL COMPANY GROWTH PORTFOLIO SINCE
                        INCEPTION AS OF OCTOBER 31, 1996
 
   The graph below illustrates the hypothetical investment of $10,000 in Warburg
Pincus   Institutional  Fund,  Inc.  --  Small  Company  Growth  Portfolio  (the
'Portfolio') from December 29, 1995 (inception) to October 31, 1996, compared to
the Russell 2000 Index ('Russell')* for the same time period.
 
                                                                AGGREGATE
                                                               TOTAL RETURNS
                                                            FOR THE PERIOD ENDED
                  INSTITUTIONAL SMALL CO.      MS-EAFE            10/31/96

            Dec-95       10,000.00             10,000.00       SINCE INCEPTION
            Oct-96       12,920.00             10,903.15         (12/29/95)
                                                                   29.20%'D'

<TABLE>
<CAPTION>
                                                                                PORTFOLIO
                                                                              --------------
 
<S>                                                                           <C>
Aggregate Total Return Since Inception (12/29/95-9/30/96)................          33.00%`D'
</TABLE>
 
   Returns are historical and include changes in share price and reinvestment of
dividends and capital gains. Past  performance cannot guarantee future  results.
Returns and share price will fluctuate, and redemption value may be more or less
than original cost.
   From  time to time,  the Fund's investment  adviser and co-administrators may
waive some fees and/or reimburse some expenses, without which performance  would
be lower. Waivers and/or reimbursements are subject to change.
 
- ------------
* The  Russell 2000 Index is an unmanaged index of the smallest 2,000 securities
  in the Russell 3000  Index. The Russell  3000 Index is an  index of the  3,000
  largest U.S. securities, as determined by total market capitalization.
 
`D' Non-annualized
 
                                       5

<PAGE>
<PAGE>
WARBURG PINCUS INSTITUTIONAL FUND, INC. -- EMERGING MARKETS PORTFOLIO
ANNUAL INVESTMENT ADVISER'S REPORT
- --------------------------------------------------------------------------------
Dear Shareholder:                                              December 11, 1996
 
   The  objective of Warburg Pincus Institutional Fund, Inc. -- Emerging Markets
Portfolio (the  'Portfolio') is  growth  of capital.  The  Portfolio is  a  non-
diversified  investment  management  company that  invests  primarily  in equity
securities of companies in emerging securities markets around the world.
 
   For the one month ended October 31, 1996 (the Portfolio's inception date  was
September  30, 1996), the Portfolio had a total return of  - 1.40%*, vs. a total
return of  - 2.31% for the Lipper Emerging Markets Funds Index.
 
   We believe  that the  Portfolio represents  an attractive  way for  long-term
investors  to participate  in the  rapid growth  of emerging  markets. Emerging-
market economies, collectively, are growing at rates well in excess of those  of
developed   countries,  offering   the  prospects   for  proportionately  higher
investment returns (albeit at a higher level of volatility). And we believe that
careful stock selection within these  markets, encompassing a thorough  analysis
of  both company fundamentals  and country specifics  (e.g., economic, political
and currency stability), can lead to particularly attractive results over  time,
given the relative inefficiency of these markets.
 
   Our efforts are geared toward identifying the most promising companies within
the  rapidly expanding emerging markets. We  welcome investors to the Portfolio,
and will strive to provide a rewarding investment experience.
 
<TABLE>
<S>                                         <C>
Richard H. King                             Nicholas P.W. Horsley
Co-Portfolio Manager                        Co-Portfolio Manager
</TABLE>
 
- ------------
* Returns are historical and include changes in share price and reinvestment  of
  dividends and capital gains. Past performance cannot guarantee future results.
  Returns  and share price will  fluctuate, and redemption value  may be more or
  less than original cost.
 
  From time to  time, the  Fund's investment adviser  and co-administrators  may
  waive  some  fees and/or  reimburse some  expenses, without  which performance
  would be lower. Waivers and/or reimbursements are subject to change.
 
                                       6

<PAGE>
<PAGE>
WARBURG PINCUS INSTITUTIONAL FUND, INC. --
INTERNATIONAL EQUITY PORTFOLIO
STATEMENT OF NET ASSETS
October 31, 1996
- --------------------------------------------------------------------------------
 
<TABLE>
<CAPTION>
                                                                  NUMBER OF
                                                                   SHARES              VALUE
                                                                 -----------        ------------
<S>                                                              <C>                <C>
COMMON STOCK (93.8%)
Argentina (2.9%)
   Banco de Galicia & Buenos Aires SA                                127,086        $    584,025
   Banco de Galicia & Buenos Aires SA ADR                             58,908           1,067,708
   Banco Frances del Rio de la Plata SA                              129,030           1,130,369
   Banco Frances del Rio de la Plata SA ADR                          220,605           5,790,881
   Telefonica de Argentina SA ADR                                    355,300           8,260,725
   YPF SA ADR                                                        457,400          10,405,850
                                                                                    ------------
                                                                                      27,239,558
                                                                                    ------------
Australia (4.2%)
   Boral Ltd.                                                      3,734,102           9,288,608
   David Jones Ltd.                                                  584,893             801,599
   Lend Lease Corp., Ltd.                                            477,900           8,098,091
   Niugini Mining Ltd. `D'                                           353,750             938,807
   Oil Search Ltd.                                                 4,974,890           7,488,105
   Pasminco Ltd.                                                     911,000           1,414,521
   Qantas Airways Ltd.                                             3,572,700           5,207,739
   Qantas Airways Ltd. ADR                                            66,200             965,990
   Reinsurance Australia Corp., Ltd.                               1,788,600           5,355,991
                                                                                    ------------
                                                                                      39,559,451
                                                                                    ------------
Austria (2.0%)
   Boehler-Uddeholm AG                                                88,239           6,604,045
   V.A. Technologie AG                                                86,868          12,154,505
                                                                                    ------------
                                                                                      18,758,550
                                                                                    ------------
Belgium (0.5%)
   Barco Industries N.V.                                              28,000           4,606,799
                                                                                    ------------
Brazil (1.2%)
   Panamerican Beverages, Inc. Class A                               255,300          11,137,463
                                                                                    ------------
Canada (1.4%)
   Alcan Aluminum Ltd.                                               385,400          12,670,025
                                                                                    ------------
Chile (0.3%)
   Enersis SA ADR                                                    103,800           3,049,125
                                                                                    ------------
</TABLE>
 
                See Accompanying Notes to Financial Statements.
                                       7

 <PAGE>
<PAGE>
WARBURG PINCUS INSTITUTIONAL FUND, INC. --
INTERNATIONAL EQUITY PORTFOLIO
STATEMENT OF NET ASSETS (CONT'D)
October 31, 1996
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>
                                                                  NUMBER OF
                                                                   SHARES              VALUE
                                                                 -----------        ------------
COMMON STOCK (CONT'D)
<S>                                                              <C>                <C>
China (1.3%)
   Cheung Kong Infrastructure Holdings Ltd. `D'                    1,827,400        $  3,403,464
   Guangshen Railway Co., Ltd. `D'                                 4,181,053           1,554,707
   Guangshen Railway Co., Ltd. ADR `D'                               161,021           2,999,016
   Henderson China Holding Ltd. `D'                                  945,500           2,140,053
   Jilin Chemical Industrial Co., Ltd. ADR                            65,500             859,688
   Jilin Chemical Industrial Co., Ltd. Class H                     5,656,000             753,480
                                                                                    ------------
                                                                                      11,710,408
                                                                                    ------------
Denmark (0.8%)
   International Service System AS Class B                           269,150           7,639,073
                                                                                    ------------
Finland (1.5%)
   Metra Oy Class B                                                   60,650           3,383,722
   Metsa-Serla Class B                                               574,000           3,990,334
   Valmet Corp. Class A                                              447,500           6,834,172
                                                                                    ------------
                                                                                      14,208,228
                                                                                    ------------
France (6.8%)
   Assurances Generales de France                                    229,400           6,769,504
   Axime (Ex Segin)                                                   34,858           3,731,229
   Cetelem                                                            10,908           2,328,799
   Compagnie Bancaire SA                                              63,700           6,357,285
   Compagnie Generale Des Eaux `D'                                    52,900           6,324,977
   Fives-Lille (Compagnie De)                                         26,740           2,422,727
   Lagardere S.C.A.                                                  402,764          12,728,736
   Total Cie Franc Des Petroles Class B                              173,256          13,558,192
   Usinor Sacilor SA                                                 644,300           9,563,257
                                                                                    ------------
                                                                                      63,784,706
                                                                                    ------------
Germany (2.5%)
   Adidas AG                                                          30,900           2,603,244
   BASF AG                                                           145,000           4,637,241
   SGL Carbon AG                                                      80,108           8,882,068
   Siemens AG                                                        148,400           7,678,871
                                                                                    ------------
                                                                                      23,801,424
                                                                                    ------------
</TABLE>
 
                See Accompanying Notes to Financial Statements.
                                       8
<PAGE>
 <PAGE>
<PAGE>
WARBURG PINCUS INSTITUTIONAL FUND, INC. --
INTERNATIONAL EQUITY PORTFOLIO
STATEMENT OF NET ASSETS (CONT'D)
October 31, 1996
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>
                                                                  NUMBER OF
                                                                   SHARES              VALUE
                                                                 -----------        ------------
COMMON STOCK (CONT'D)
<S>                                                              <C>                <C>
Hong Kong (4.0%)
   Citic Pacific Ltd.                                              2,296,200        $ 11,166,641
   Hong Kong Land Holdings Ltd.                                    3,875,400           8,642,142
   Hong Kong Land Holdings Ltd. ADR                                  275,000           3,066,250
   HSBC Holdings PLC                                                 237,323           4,834,431
   HSBC Holdings PLC (UK)                                                819              17,192
   Jardine Matheson Holdings Ltd.                                  1,678,515           9,483,610
                                                                                    ------------
                                                                                      37,210,266
                                                                                    ------------
India (1.7%)
   Associated Cement Companies Ltd.                                    8,296             358,481
   Bharat Petroleum Corp. Ltd.                                        59,600             470,704
   Hindalco Industries Ltd.                                          145,125           2,411,232
   Hindalco Industries Ltd. GDR                                       88,650           1,629,387
   India Cements Ltd.                                                 20,250              57,220
   Reliance Industries Ltd.                                          524,500           3,001,166
   Reliance Industries Ltd. GDS                                      103,700           1,166,625
   State Bank of India                                               865,050           5,634,191
   State Bank of India GDR `D'                                       100,000           1,510,000
                                                                                    ------------
                                                                                      16,239,006
                                                                                    ------------
Indonesia (1.4%)
   P.T. Bank International Indonesia                               1,141,620           1,838,752
   P.T. Indosat                                                       83,000             251,326
   P.T. Indosat ADR                                                  131,700           3,967,463
   P.T. Mulia Industrindo                                          2,262,120           2,137,513
   P.T. Semen Gresik                                                 517,000           1,487,770
   P.T. Sinar Mas Multiartha                                         139,100             140,399
   P.T. Telekomunikasi Indonesia                                   1,661,200           2,479,403
   P.T. Telekomunikasi Indonesia ADR                                  13,100             393,000
                                                                                    ------------
                                                                                      12,695,626
                                                                                    ------------
Israel (0.9%)
   Ampal-American Israel Corp. Class A                               233,000           1,106,750
   ECI Telecommunications Limited Designs                            375,350           7,507,000
                                                                                    ------------
                                                                                       8,613,750
                                                                                    ------------
</TABLE>
 
                See Accompanying Notes to Financial Statements.
                                       9

 <PAGE>
<PAGE>
WARBURG PINCUS INSTITUTIONAL FUND, INC. --
INTERNATIONAL EQUITY PORTFOLIO
STATEMENT OF NET ASSETS (CONT'D)
October 31, 1996
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>
                                                                  NUMBER OF
                                                                   SHARES              VALUE
                                                                 -----------        ------------
COMMON STOCK (CONT'D)
<S>                                                              <C>                <C>
Japan (26.1%)
   Canon, Inc.                                                       659,000        $ 12,634,069
   Canon, Inc. ADR                                                    25,200           2,428,650
   Daibiru Corp.                                                     156,000           1,769,765
   Daimaru, Inc.                                                     297,000           1,791,769
   DDI Corp.                                                           1,537          11,556,899
   East Japan Railway Co.                                                414           1,904,160
   Fujitsu Ltd.                                                      265,000           2,330,490
   Hankyu Realty Co., Ltd.                                           511,000           4,628,705
   Hitachi Ltd.                                                      452,750           4,021,436
   Honda Motor Co.                                                   435,000          10,405,417
   Isuzu Motors Ltd.                                               1,631,000           8,075,394
   Itochu Corp.                                                      215,000           1,298,962
   Japan Tobacco Inc.                                                    845           5,974,672
   Jusco Co., Ltd.                                                   365,000          10,849,530
   Kao Corp.                                                             500               5,892
   Kawasaki Heavy Industries                                       1,925,000           8,820,025
   Keyence Corp.                                                      30,000           3,482,543
   Kirin Beverage Corp.                                              144,000           1,924,897
   Mitsubishi Corp.                                                   23,000             256,882
   Mitsubishi Estate Co., Ltd.                                       720,000           8,991,294
   Mitsubishi Heavy Industries Ltd.                                1,074,000           8,264,445
   Murata Manufacturing Co., Ltd.                                    143,290           4,612,096
   Mycal Corp.                                                       615,500           9,472,562
   Nikko Securities Co., Ltd.                                        482,000           4,620,350
   Nippon Communication Systems Corp.                                379,300           4,870,091
   Nippon Telephone & Telegraph Corp.                                  1,317           9,207,206
   NKK Corp. `D'                                                   2,999,000           7,542,995
   NTT Data Communications Systems Co.                                   164           4,860,434
   Orix Corp.                                                        237,200           8,844,675
   Pioneer Electronic Corp.                                          522,000          10,328,907
   Rohm Co., Ltd.                                                     80,000           4,748,923
   Sharp Corp.                                                       589,000           8,961,129
   Sony Corp.                                                        140,500           8,439,143
   Sony Corp. ADR                                                     36,900           2,227,838
   TDK Corp.                                                         214,000          12,571,630
   Toho Co., Ltd.                                                     25,850           3,978,322
   Toray Industries, Inc.                                          1,294,000           7,817,940
   Tsuchiya Home Co.                                                  79,398           1,249,867
   Uny Co., Ltd.                                                     277,500           4,807,625
</TABLE>
 
                See Accompanying Notes to Financial Statements.
                                       10

 <PAGE>
<PAGE>
WARBURG PINCUS INSTITUTIONAL FUND, INC. --
INTERNATIONAL EQUITY PORTFOLIO
STATEMENT OF NET ASSETS (CONT'D)
October 31, 1996
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>
                                                                  NUMBER OF
                                                                   SHARES              VALUE
                                                                 -----------        ------------
COMMON STOCK (CONT'D)
<S>                                                              <C>                <C>
Japan (cont'd)
   West Japan Railway Co. `D'                                          2,400        $  7,851,552
   Yokogawa Electric                                                 290,000           2,575,851
   York-Benimaru Co., Ltd.                                           107,400           3,532,460
                                                                                    ------------
                                                                                     244,537,492
                                                                                    ------------
Malaysia (0.2%)
   Land & General BHD                                                171,000             372,328
   Westmont Industries BHD                                           847,200           1,428,770
                                                                                    ------------
                                                                                       1,801,098
                                                                                    ------------
Mexico (0.5%)
   Gruma SA de CV Class B `D'                                      1,031,100           5,129,787
                                                                                    ------------
New Zealand (4.8%)
   Brierley Investments Ltd.                                       8,246,083           7,519,611
   Fletcher Challenge Building                                     3,387,112           9,170,358
   Fletcher Challenge Energy                                              12                  34
   Fletcher Challenge Forestry                                     6,250,551          10,427,694
   Fletcher Challenge Paper                                        1,141,025           2,064,872
   Lion Nathan Ltd.                                                3,101,200           8,001,670
   Sky City Ltd. `D'                                                 803,275           4,599,464
   Wrightson Ltd.                                                  3,271,735           2,867,859
                                                                                    ------------
                                                                                      44,651,562
                                                                                    ------------
Norway (1.6%)
   Den Norske Bank AS                                              3,155,500          10,489,306
   Norsk Hydro AS ADR                                                 98,144           4,502,356
                                                                                    ------------
                                                                                      14,991,662
                                                                                    ------------
Pakistan (0.1%)
   Pakistan Telecommunications Corp. GDR `D'                          10,000             770,000
                                                                                    ------------
Philippines (0.4%)
   Millicom International Cellular SA GDR `D'                         89,700           3,565,575
                                                                                    ------------
Portugal (1.7%)
   Cimpor Cimentos de Portugal SA                                    233,500           4,909,925
   Portugal Telecom SA                                               251,400           6,540,114
   Portugal Telecom SA ADR                                           168,800           4,367,700
                                                                                    ------------
                                                                                      15,817,739
                                                                                    ------------
</TABLE>
 
                See Accompanying Notes to Financial Statements.
                                       11

 <PAGE>
<PAGE>
WARBURG PINCUS INSTITUTIONAL FUND, INC. --
INTERNATIONAL EQUITY PORTFOLIO
STATEMENT OF NET ASSETS (CONT'D)
October 31, 1996
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>
                                                                  NUMBER OF
                                                                   SHARES              VALUE
                                                                 -----------        ------------
COMMON STOCK (CONT'D)
<S>                                                              <C>                <C>
Singapore (2.0%)
   DBS Land Ltd.                                                   2,703,900        $  8,524,687
   Development Bank of Singapore Ltd.                                751,562           9,018,957
   Development Bank of Singapore Ltd. ADR                             34,750           1,667,236
                                                                                    ------------
                                                                                      19,210,880
                                                                                    ------------
South Korea (3.8%)
   Daewoo Electronics Co., Ltd.                                      684,150           5,562,870
   Daewoo Heavy Industries                                            78,194             597,842
   Hana Bank                                                         215,051           3,376,483
   Hana Bank (New)                                                    37,237             556,589
   Hanil Bank                                                        521,053           4,794,193
   Inchon Iron & Steel Co., Ltd.                                      11,700             252,743
   Keum Kang Development Ind. Co.                                     57,600             971,650
   Kookmin Bank GDR `D'                                              128,000           2,672,000
   Korea Electric & Power Co.                                         63,000           1,857,888
   Korea Europe Fund Ltd.                                                289             903,125
   Korea Long Term Credit Bank                                        89,657           1,936,765
   Korea Mobile Telecommunications Corp.                                  50              50,152
   L.G. Construction Ltd. `D'                                        112,630           2,241,665
   Samsung Electronics Co., Ltd.                                      56,148           3,958,979
   Samsung Electronics Co., Ltd. (New) `D'                            10,062             689,931
   Samsung Electronics Co., Ltd. GDR (Non-Voting) `D'                 15,346             329,939
   Samsung Electronics Co., Ltd. GDR (Voting) `D'                      5,068             233,128
   Samsung Heavy Industries Co., Ltd.                                 41,143             504,301
   Samsung Heavy Industries Co., Ltd. (New) `D'                       10,908             127,216
   Ssangyong Investment & Securities Co., Ltd. `D'                   254,520           3,891,932
                                                                                    ------------
                                                                                      35,509,391
                                                                                    ------------
Spain (3.6%)
   Banco de Santander                                                 30,300           1,555,978
   Banco de Santander ADR                                            249,000          12,916,875
   Iberdrola SA                                                    1,083,900          11,514,579
   Repsol SA ADR                                                     230,100           7,507,013
                                                                                    ------------
                                                                                      33,494,445
                                                                                    ------------
Sweden (2.3%)
   ABB AB Series B                                                    68,700           7,667,854
   Astra AB Series B                                                 266,100          12,155,680
   Mo Och Domsjo AB Series B                                          71,000           1,956,816
                                                                                    ------------
                                                                                      21,780,350
                                                                                    ------------
</TABLE>
 
                See Accompanying Notes to Financial Statements.
                                       12

 <PAGE>
<PAGE>
WARBURG PINCUS INSTITUTIONAL FUND, INC. --
INTERNATIONAL EQUITY PORTFOLIO
STATEMENT OF NET ASSETS (CONT'D)
October 31, 1996
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>
                                                                  NUMBER OF
                                                                   SHARES              VALUE
                                                                 -----------        ------------
COMMON STOCK (CONT'D)
<S>                                                              <C>                <C>
Switzerland (2.0%)
   ABB AG                                                              5,074        $  6,282,172
   Ciba-Geigy AG B                                                     9,005          11,063,530
   Danzas Holding AG                                                   1,369           1,546,310
                                                                                    ------------
                                                                                      18,892,012
                                                                                    ------------
Taiwan (2.9%)
   China Steel Corp.                                               5,604,000           4,989,026
   Hocheng Group Corp.                                             1,508,800           2,412,326
   Phoenixtec Power Co., Ltd. `D'                                  2,812,440           4,598,830
   Tatung Co., Ltd.                                                3,441,250           6,564,885
   Ton Yi Industrial Corp. `D'                                     5,123,210           6,180,616
   Wan Hai Lines Ltd.                                              1,000,000           2,816,134
                                                                                    ------------
                                                                                      27,561,817
                                                                                    ------------
Thailand (1.0%)
   Bangkok Bank Public Co., Ltd.                                     210,400           2,249,560
   Industrial Finance Corp. of Thailand                            1,310,833           3,864,484
   Siam Cement Public Co., Ltd.                                       55,500           1,902,358
   Thai Military Bank Public Co., Ltd.                               567,360           1,315,811
                                                                                    ------------
                                                                                       9,332,213
                                                                                    ------------
United Kingdom (7.4%)
   AAF Industries PLC `D'                                            158,700              86,509
   British Airport Authority PLC                                   1,037,712           8,400,611
   Cookson Group PLC                                               3,223,368          11,880,071
   Grand Metropolitan PLC                                          1,020,063           7,693,389
   London Pacific Group Ltd.                                         606,000           2,302,504
   Rolls-Royce PLC                                                 2,606,000          10,770,827
   Singer & Friedlander Group PLC                                  1,768,000           3,610,496
   TC Group PLC                                                    1,222,900           2,885,359
   Thistle Hotels PLC `D'                                          2,748,652           7,491,616
   Trio Holdings PLC `D'                                           1,648,500             147,534
   Vodafone Group PLC                                              3,597,800          13,904,058
                                                                                    ------------
                                                                                      69,172,974
                                                                                    ------------
 
TOTAL COMMON STOCK (Cost $837,257,221)                                               879,142,455
                                                                                    ------------
</TABLE>
 
                See Accompanying Notes to Financial Statements.
                                       13

 <PAGE>
<PAGE>
WARBURG PINCUS INSTITUTIONAL FUND, INC. --
INTERNATIONAL EQUITY PORTFOLIO
STATEMENT OF NET ASSETS (CONT'D)
October 31, 1996
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>
                                                                  NUMBER OF
                                                                   SHARES              VALUE
                                                                 -----------        ------------
PREFERRED STOCK (0.2%)
<S>                                                              <C>                <C>
South Korea (0.1%)
   Samsung Electronics Co., Ltd.                                      12,134        $    439,121
   Samsung Electronics Co., Ltd. (New) `D'                             3,657             127,145
                                                                                    ------------
                                                                                         566,266
                                                                                    ------------
United Kingdom (0.1%)
   Singer & Friedlander Group PLC, 8.50% Convertible                 348,947             860,227
                                                                                    ------------
TOTAL PREFERRED STOCK (Cost $3,931,007)                                                1,426,493
                                                                                    ------------
RIGHTS & WARRANTS (0.0%)
Hong Kong (0.0%)
   Jardine Strategic Holdings Ltd. Wts., 05/02/98 `D'                384,600              14,426
                                                                                    ------------
Israel (0.0%)
   Ampal-American Israel Corp. Class A Wts., 01/31/99 `D'             95,000              17,813
                                                                                    ------------
Japan (0.0%)
   Bandai Industries Wts., 11/04/97 `D'                                   60              15,000
                                                                                    ------------
TOTAL RIGHTS & WARRANTS (Cost $341,377)                                                   47,239
                                                                                    ------------
CALL OPTIONS (0.1%)
Japan (0.1%)
   Topix Index, 03/14/97 (Strike Price 1,539.20) `D'               1,062,727             642,525
                                                                                    ------------
New Zealand (0.0%)
   Air New Zealand Ltd., 05/01/98 (Strike Price $2.4615)
     `D'                                                           3,750,000              37,500
   Air New Zealand Ltd., 05/01/98 (Strike Price $2.5895)
     `D'                                                           3,750,000              24,750
                                                                                    ------------
                                                                                          62,250
                                                                                    ------------
South Korea (0.0%)
   Kospi 200 Index, 12/04/96 (Strike Price $.126002) `D'          23,296,620                   0
   Kospi 200 Index, 12/06/96 (Strike Price $.125812) `D'          22,994,313                  23
   Kospi 200 Index, 12/13/96 (Strike Price $.118539) `D'          31,954,705                 863
   Kospi 200 Index, 01/24/97 (Strike Price $.108243) `D'          31,894,727              40,698
   Kospi 200 Index, 02/07/97 (Strike Price $.110156) `D'          29,827,829              38,299
                                                                                    ------------
                                                                                          79,883
                                                                                    ------------
TOTAL CALL OPTIONS (Cost $3,072,806)                                                     784,658
                                                                                    ------------
</TABLE>
 
                See Accompanying Notes to Financial Statements.
                                       14

 <PAGE>
<PAGE>
WARBURG PINCUS INSTITUTIONAL FUND, INC. --
INTERNATIONAL EQUITY PORTFOLIO
STATEMENT OF NET ASSETS (CONT'D)
October 31, 1996
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>
                                                                     PAR
                                                                 -----------
CONVERTIBLE BONDS/NOTES (1.2%)
<S>                                                              <C>                <C>
Argentina (0.2%)
   Banco de Galicia & Buenos Aires SA 7.00%, 08/01/02           $  1,574,000        $  1,542,520
                                                                                    ------------
Japan (0.6%)
   Matsushita Electric Works Ltd. 2.70%, 05/31/02            (A) 521,000,000           5,498,197
                                                                                    ------------
New Zealand (0.1%)
   Brierley Investments Ltd. 9.00%, 06/30/98                  (B)  1,028,875             865,501
                                                                                    ------------
Thailand (0.3%)
   Bangkok Bank Public Co., Ltd., 3.25%, 03/03/04               $  3,435,000           3,529,463
                                                                                    ------------
TOTAL CONVERTIBLE BONDS/NOTES (Cost $11,745,665)                                      11,435,681
                                                                                    ------------
SHORT-TERM INVESTMENTS (4.2%)
 Repurchase agreement with State Street Bank & Trust Co.
 dated 10/31/96 at 5.51% to be repurchased at $39,811,092
 on 11/01/96. (Collateralized by $40,150,000 U.S. Treasury
 Note 6.125%, due 03/31/98. Market value of collateral is
 $40,601,688.) (Cost $39,805,000)                                 39,805,000          39,805,000
                                                                                    ------------
TOTAL INVESTMENTS AT VALUE (99.5%) (Cost $896,153,076*)                              932,641,526
OTHER ASSETS IN EXCESS OF LIABILITIES (0.5%)                                           4,801,674
                                                                                    ------------
NET ASSETS (100.0%) (applicable to 58,069,977
 shares outstanding)                                                                $937,443,200
                                                                                    ------------
                                                                                    ------------
NET ASSET VALUE, offering and redemption price per share
 ($937,443,200[div]58,069,977)                                                            $16.14
                                                                                          ------
                                                                                          ------
</TABLE>
 
                            INVESTMENT ABBREVIATIONS
 
<TABLE>
<C>       <S>
      ADR = American Depository Receipt
      GDR = Global Depository Receipt
      GDS = Global Depository Share
</TABLE>
 
- --------------------------------------------------------------------------------
 `D' Non-income producing security.
 * Cost for Federal income tax purposes is $896,226,893.
(A) Denominated in Japanese Yen.
(B) Denominated in New Zealand Dollars.
 
                See Accompanying Notes to Financial Statements.
                                       15

<PAGE>
<PAGE>
WARBURG PINCUS INSTITUTIONAL FUNDS, INC.  -- SMALL COMPANY GROWTH PORTFOLIO
STATEMENT OF NET ASSETS
October 31, 1996
- --------------------------------------------------------------------------------
 
<TABLE>
<CAPTION>
                                                                  NUMBER OF
                                                                    SHARES             VALUE
                                                                  ----------        ------------
<S>                                                               <C>               <C>
COMMON STOCK (95.9%)
 Banks & Savings & Loans (1.0%)
   HUBCO, Inc.                                                        45,011        $    967,737
                                                                                    ------------
 Business Services (13.9%)
   Abacus Direct Corp.`D'                                              4,100             107,625
   American Management Systems, Inc.`D'                               35,300           1,116,363
   Catalina Marketing Corp.`D'                                        19,056             969,474
   CCC Information Services Group`D'                                  42,600             798,750
   CDI Corp.`D'                                                       34,129             938,547
   Checkpoint System, Inc.`D'                                         41,629             931,449
   Claremont Technology Group, Inc.`D'                                26,000             793,000
   Daisytek International Corp.`D'                                    31,654           1,210,764
   Getty Communications PLC ADR`D'                                    62,600             860,750
   ICTS International BV`D'                                           68,800             834,200
   International Network Services`D'                                   1,600              57,200
   National Educational Corp.`D'                                      51,100             830,375
   Norrell Corp.                                                      35,412             885,300
   Pharmaceutical Product Development, Inc.`D'                        45,300             866,363
   Professional Staff, Inc. ADR                                       35,000             341,250
   QuickResponse Services, Inc.`D'                                    26,433             981,325
   Wilmar Industries, Inc.`D'                                         39,700             853,550
   XLConnect Solutions, Inc.`D'                                        3,700             108,225
                                                                                    ------------
                                                                                      13,484,510
                                                                                    ------------
 Capital Equipment (0.9%)
   Roper Industries, Inc.                                             20,127             850,366
   Valmont Industries, Inc.                                              600              20,700
                                                                                    ------------
                                                                                         871,066
                                                                                    ------------
 Communications & Media (2.9%)
   Central European Media Enterprises Ltd. Class A`D'                 55,147           1,544,116
   Harte-Hanks Communications, Inc.                                   49,850           1,289,869
                                                                                    ------------
                                                                                       2,833,985
                                                                                    ------------
</TABLE>
 
                See Accompanying Notes to Financial Statements.
                                       16

 <PAGE>
<PAGE>
WARBURG PINCUS INSTITUTIONAL FUNDS, INC.  -- SMALL COMPANY GROWTH PORTFOLIO
STATEMENT OF NET ASSETS (CONT'D)
October 31, 1996
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>
                                                                  NUMBER OF
                                                                    SHARES             VALUE
                                                                  ----------        ------------
COMMON STOCK (CONT'D)
<S>                                                               <C>               <C>
 Computers (11.7%)
   ANSYS, Inc.`D'                                                     29,200        $    357,700
   Arbor Software Corp.`D'                                            27,400             993,250
   Aspect Development, Inc.`D'                                        32,300             803,462
   Citrix Systems, Inc.`D'                                            33,246           1,836,841
   Clarify, Inc.`D'                                                   34,600           1,669,450
   Cognex Corp.`D'                                                    50,500             650,187
   Integrated Systems, Inc.`D'                                        32,500             877,500
   Intelligroup, Inc.`D'                                               3,000              47,250
   Learning Tree International, Inc.`D'                               13,300             561,925
   Memco Software Ltd.`D'                                              7,000             127,750
   National Instruments Corp.`D'                                      35,755           1,019,018
   Rational Software Corp.`D'                                         39,500           1,515,813
   Tecnomatix Technologies, Ltd. Ord`D'                               51,900             901,763
                                                                                    ------------
                                                                                      11,361,909
                                                                                    ------------
 Consumer Durables (0.8%)
   Chicago Miniature Lamp, Inc.`D'                                     7,700             229,075
   Dura Automotive Systems, Inc.`D'                                   23,200             556,800
                                                                                    ------------
                                                                                         785,875
                                                                                    ------------
 Consumer Non-Durables (3.1%)
   Carson, Inc. Class A`D'                                            10,300             167,375
   Central Garden & Pet Co.`D'                                        42,900           1,013,512
   Marker International`D'                                            28,800             219,600
   North Face, Inc.`D'                                                33,100             670,275
   Sola International, Inc.`D'                                        24,400             881,450
                                                                                    ------------
                                                                                       2,952,212
                                                                                    ------------
 Consumer Services (2.6%)
   DeVRY, Inc.`D'                                                     35,526           1,771,859
   Veterinary Centers of America, Inc.`D'                             40,000             735,000
                                                                                    ------------
                                                                                       2,506,859
                                                                                    ------------
</TABLE>
 
                See Accompanying Notes to Financial Statements.
                                       17

 <PAGE>
<PAGE>
WARBURG PINCUS INSTITUTIONAL FUNDS, INC.  -- SMALL COMPANY GROWTH PORTFOLIO
STATEMENT OF NET ASSETS (CONT'D)
October 31, 1996
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>
                                                                  NUMBER OF
                                                                    SHARES             VALUE
                                                                  ----------        ------------
COMMON STOCK (CONT'D)
<S>                                                               <C>               <C>
 Electronics (11.2%)
   Analogic Corp.                                                     30,300        $    825,675
   Burr-Brown Corp.`D'                                                56,823           1,207,489
   Epic Design Technology, Inc.`D'                                    38,200             935,900
   Glenayre Technologies, Inc.`D'                                     43,800           1,127,850
   Intelligent Electronics, Inc.`D'                                   90,000             798,750
   Methode Electronics, Inc. Class A                                  71,697           1,398,092
   Microchip Technology, Inc.`D'                                      19,000             688,750
   Photronics, Inc.`D'                                                32,100             866,700
   Sawtek, Inc.`D'                                                    29,700             898,425
   Select Software Tools Ltd. ADR`D'                                   5,000             110,000
   Synopsys, Inc.`D'                                                  43,900           1,975,500
                                                                                    ------------
                                                                                      10,833,131
                                                                                    ------------
 Energy (4.2%)
   Brown (Tom), Inc.`D'                                               76,489           1,443,730
   Chieftain International, Inc.`D'                                   40,100             937,337
   Texas Meridian Resources Corp.`D'                                  91,046           1,638,828
                                                                                    ------------
                                                                                       4,019,895
                                                                                    ------------
 Environmental Services (3.2%)
   Allied Waste Industries, Inc.`D'                                  149,297           1,353,004
   USA Waste Services, Inc.`D'                                        53,843           1,722,976
                                                                                    ------------
                                                                                       3,075,980
                                                                                    ------------
 Financial Services (4.7%)
   Aames Financial Corp.                                              26,300           1,173,637
   PMT Services, Inc.`D'                                              45,400             908,000
   Transaction Systems Architects, Inc. Class A`D'                    46,400           1,925,600
   Triad Guaranty, Inc.`D'                                            17,800             538,450
                                                                                    ------------
                                                                                       4,545,687
                                                                                    ------------
 Healthcare (6.1%)
   Ballard Medical Products                                           41,914             738,734
   Core, Inc.`D'                                                      76,600             785,150
   EmCare Holdings, Inc.`D'                                           49,918           1,247,950
   Endosonics Corp.`D'                                                27,900             352,237
   Endovascular Technologies, Inc.`D'                                 66,600             699,300
   IDX Systems Corp.`D'                                               32,933             971,524
   InControl, Inc.`D'                                                 62,100             504,563
   Nitinol Medical Technologies, Inc.`D'                              15,200             159,600
   Physician Reliance Network, Inc.`D'                                72,300             424,763
   Trex Medical Corp.`D'                                                 790              13,924
                                                                                    ------------
                                                                                       5,897,745
                                                                                    ------------
</TABLE>
 
                See Accompanying Notes to Financial Statements.
                                       18

 <PAGE>
<PAGE>
WARBURG PINCUS INSTITUTIONAL FUNDS, INC.  -- SMALL COMPANY GROWTH PORTFOLIO
STATEMENT OF NET ASSETS (CONT'D)
October 31, 1996
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>
                                                                  NUMBER OF
                                                                    SHARES             VALUE
                                                                  ----------        ------------
COMMON STOCK (CONT'D)
<S>                                                               <C>               <C>
 Industrial Mfg. & Processing (0.8%)
   Elbit Vision Systems, Inc.`D'                                      44,300        $    265,800
   Waters Corp.`D'                                                    17,900             554,900
                                                                                    ------------
                                                                                         820,700
                                                                                    ------------
 Leisure & Entertainment (2.8%)
   Family Golf Centers, Inc.`D'                                       41,500           1,219,063
   Golden Bear Golf, Inc.`D'                                           3,200              57,600
   Premier Parks, Inc.`D'                                             46,500           1,476,374
                                                                                    ------------
                                                                                       2,753,037
                                                                                    ------------
 Lodging & Restaurants (2.1%)
   Doubletree Corp.`D'                                                30,224           1,225,961
   Planet Hollywood International, Inc. Class A`D'                    39,000             809,250
                                                                                    ------------
                                                                                       2,035,211
                                                                                    ------------
 Oil Services (5.3%)
   Forcenergy Gas Exploration, Inc.`D'                                35,000             958,125
   Global Industry Ltd.`D'                                            65,900           1,186,200
   Input/Output, Inc.`D'                                              50,000           1,487,500
   Petroleum Geo Services ADR`D'                                      44,531           1,525,187
                                                                                    ------------
                                                                                       5,157,012
                                                                                    ------------
 Pharmaceuticals (4.3%)
   Applied Analytical Industries, Inc.`D'                              2,000              43,500
   EntreMed, Inc.`D'                                                     400               6,100
   Gilead Sciences, Inc.`D'                                           44,035           1,029,318
   Ligand Pharmaceuticals, Inc. Class B`D'                            79,918             988,985
   NaPro Biotherapeutics, Inc.`D'                                     42,000             383,250
   Regeneron Pharmaceuticals, Inc.`D'                                 49,800             946,200
   Serologicals Corp.`D'                                              24,400             744,200
                                                                                    ------------
                                                                                       4,141,553
                                                                                    ------------
 Real Estate (2.7%)
   Fairfield Communities, Inc.`D'                                     30,000             641,250
   NHP, Inc.`D'                                                       72,598           1,197,867
   U.S. Restaurant Properties Master Limited Partnership              31,600             738,650
                                                                                    ------------
                                                                                       2,577,767
                                                                                    ------------
 Retail (3.3%)
   Borders Group, Inc.`D'                                             45,000           1,417,500
   Kenneth Cole Productions, Inc. Class A`D'                          51,000             841,500
   Stage Stores, Inc.`D'                                              10,000             182,500
   Urban Outfitters, Inc.`D'                                          48,500             763,875
                                                                                    ------------
                                                                                       3,205,375
                                                                                    ------------
</TABLE>
 
                See Accompanying Notes to Financial Statements.
                                       19

 <PAGE>
<PAGE>
WARBURG PINCUS INSTITUTIONAL FUNDS, INC.  -- SMALL COMPANY GROWTH PORTFOLIO
STATEMENT OF NET ASSETS (CONT'D)
October 31, 1996
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>
                                                                  NUMBER OF
                                                                    SHARES             VALUE
                                                                  ----------        ------------
COMMON STOCK (CONT'D)
<S>                                                               <C>               <C>
 Telecommunications & Equipment (5.0%)
   Brooks Fiber Properties, Inc.`D'                                   34,000        $    998,750
   Intermedia Communications of Florida, Inc.`D'                      39,500           1,264,000
   InterVoice, Inc.`D'                                                60,000             780,000
   Teledata Communications Ltd.`D'                                    61,000             968,375
   Tollgrade Communications, Inc.`D'                                  31,600             821,600
                                                                                    ------------
                                                                                       4,832,725
                                                                                    ------------
 Transportation (3.3%)
   Coach USA, Inc.`D'                                                 16,700             455,075
   Heartland Express, Inc.`D'                                         48,450           1,065,900
   Mark VII, Inc.`D'                                                  63,631           1,662,360
                                                                                    ------------
                                                                                       3,183,335
                                                                                    ------------
TOTAL COMMON STOCK (Cost $89,632,782)                                                 92,843,306
                                                                                    ------------
<CAPTION>
 
                                                                     PAR
                                                                  ----------
SHORT-TERM INVESTMENTS (8.3%)
<S>                                                               <C>               <C>
  Repurchase agreement with State Street Bank & Trust Co.
  dated 10/31/96 at 5.51% to be repurchased at $8,067,235 on
  11/01/96. (Collateralized by $8,140,000 U.S. Treasury Note
  6.125%, due 03/31/98. Market value of collateral is
  $8,231,575.) (Cost $8,066,000)                                  $8,066,000           8,066,000
                                                                                    ------------
TOTAL INVESTMENTS AT VALUE (104.2%) (Cost $97,698,782*)                              100,909,306
LIABILITIES IN EXCESS OF OTHER ASSETS (4.2%)                                         (4,082,223)
                                                                                    ------------
NET ASSETS (100.0%) (applicable to 7,493,639 shares outstanding)                    $ 96,827,083
                                                                                    ------------
                                                                                    ------------
NET ASSET VALUE, offering and redemption price per share
 ($96,827,083[div]7,493,639)                                                              $12.92
                                                                                          ------
                                                                                          ------
</TABLE>
 
- --------------------------------------------------------------------------------
`D' Non-income producing security.
* Cost for Federal income tax purposes is $97,708,244.
 
                See Accompanying Notes to Financial Statements.
                                       20

<PAGE>
<PAGE>
WARBURG PINCUS INSTITUTIONAL FUND, INC. --
EMERGING MARKETS PORTFOLIO
STATEMENT OF NET ASSETS
October 31, 1996
- --------------------------------------------------------------------------------
 
<TABLE>
<CAPTION>
                                                                   NUMBER OF
                                                                    SHARES             VALUE
                                                                   ---------        ------------
<S>                                                                <C>              <C>
COMMON STOCK (87.2%)
Argentina (5.4%)
   Disco SA ADR `D'                                                  26,900         $    605,250
   YPF SA ADR                                                        44,000            1,001,000
                                                                                    ------------
                                                                                       1,606,250
                                                                                    ------------
Australia (5.4%)
   Oil Search Ltd.                                                  665,300            1,001,396
   Orogen Minerals Ltd. GDR `D'                                      38,000              601,806
                                                                                    ------------
                                                                                       1,603,202
                                                                                    ------------
Brazil (4.2%)
   Centrais Electricas de Santa Catarina SA GDR `D'                  14,800            1,246,900
                                                                                    ------------
Chile (6.8%)
   Enersis SA ADR                                                    31,000              910,625
   Santa Isabel SA ADR                                               39,000            1,096,875
                                                                                    ------------
                                                                                       2,007,500
                                                                                    ------------
China (2.3%)
   Cheung Kong Infrastructure Holdings Ltd. `D'                     364,000              677,936
                                                                                    ------------
Egypt (2.2%)
   Commercial International Bank Ltd. GDR `D'                        44,600              646,700
                                                                                    ------------
Hong Kong (5.2%)
   Hong Kong Land Holdings Ltd. ADR                                 257,000              573,110
   Wing Hang Bank Ltd.                                              237,000              953,309
                                                                                    ------------
                                                                                       1,526,419
                                                                                    ------------
India (5.2%)
   Hindalco Industries Ltd. GDR                                      41,300              759,094
   State Bank of India Ltd. GDR `D'                                  52,000              785,200
                                                                                    ------------
                                                                                       1,544,294
                                                                                    ------------
Indonesia (6.7%)
   P.T. Bank Nisp                                                   546,000              606,797
   P.T. Indosat ADR                                                  46,300            1,394,788
                                                                                    ------------
                                                                                       2,001,585
                                                                                    ------------
Israel (3.9%)
   ECI Telecommunications Limited Designs                            58,000            1,160,000
                                                                                    ------------
Malaysia (2.5%)
   Land and General BHD                                             344,000              749,010
                                                                                    ------------
Philippines (4.8%)
   Millicom International Cellular SA ADR `D'                        36,000            1,431,000
                                                                                    ------------
</TABLE>
 
                See Accompanying Notes to Financial Statements.
                                       21

 <PAGE>
<PAGE>
WARBURG PINCUS INSTITUTIONAL FUND, INC. --
EMERGING MARKETS PORTFOLIO
STATEMENT OF NET ASSETS (CONT'D)
October 31, 1996
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>
                                                                   NUMBER OF
                                                                    SHARES             VALUE
                                                                   ---------        ------------
COMMON STOCK (CONT'D)
<S>                                                                <C>              <C>
Portugal (3.1%)
   Cimpor-Cimentos de Portugal SA                                    44,300         $    931,519
                                                                                    ------------
Singapore (6.5%)
   DBS Land Ltd.                                                    338,000            1,065,625
   Development Bank of Singapore Ltd.                                73,000              876,021
                                                                                    ------------
                                                                                       1,941,646
                                                                                    ------------
South Korea (5.7%)
   Keum Kang Development Ind. Co. `D'                                34,400              580,291
   Kookmin Bank GDR `D'                                              26,000              542,750
   Korea Electric & Power Co.                                        19,000              560,316
                                                                                    ------------
                                                                                       1,683,357
                                                                                    ------------
Taiwan (7.7%)
   Pacific Electrical Wire and Cable Co. `D'                        916,000              765,552
   Tatung Co., Ltd.                                                 254,000              484,557
   Ton Yi Industrial Corp.`D'                                       394,400              475,802
   Wan Hai Lines Co., Ltd.                                          195,000              549,146
                                                                                    ------------
                                                                                       2,275,057
                                                                                    ------------
Thailand (9.0%)
   Industrial Finance Corp. of Thailand                              82,000              241,745
   Jasmine International Public Co., Ltd.                           104,000              286,164
   Ruam Pattana Fund II                                           2,365,500            1,092,556
   Siam Cement Public Co., Ltd.                                      17,000              582,704
   Thai Military Bank Public Co., Ltd.                              197,000              456,879
                                                                                    ------------
                                                                                       2,660,048
                                                                                    ------------
Zimbabwe (0.6%)
   Trans Zambesi Industries GDR                                      84,000              172,200
                                                                                    ------------
TOTAL COMMON STOCK (Cost $26,089,082)                                                 25,864,623
                                                                                    ------------
CALL OPTIONS (0.3%)
South Korea (0.1%)
   Kospi 200 Index, 04/11/97 (Strike Price .105651) `D'           9,808,421               39,038
                                                                                    ------------
Thailand (0.2%)
   Set Index, 04/11/97 (Strike Price 36.683445) `D'                  31,995               60,344
                                                                                    ------------
TOTAL CALL OPTIONS (Cost $200,000)                                                        99,382
                                                                                    ------------
</TABLE>
 
                See Accompanying Notes to Financial Statements.
                                       22

 <PAGE>
<PAGE>
WARBURG PINCUS INSTITUTIONAL FUND, INC. --
EMERGING MARKETS PORTFOLIO
STATEMENT OF NET ASSETS (CONT'D)
October 31, 1996
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>
CONVERTIBLE BONDS (6.8%)                                              PAR              VALUE
                                                                   ---------        ------------
<S>                                                                <C>              <C>
China (2.9%)
   Henderson Capital International 5.00%, 03/28/97                $1,005,000        $    869,325
                                                                                    ------------
South Korea (3.9%)
   Samsung Electronics Co., Ltd. 0.25%, 12/31/06                   1,075,000           1,158,312
                                                                                    ------------
TOTAL CONVERTIBLE BONDS (Cost $2,141,831)                                              2,027,637
                                                                                    ------------
SHORT-TERM INVESTMENTS (6.8%)
  Repurchase agreement with State Street Bank & Trust Co.,
  dated 10/31/96 at 5.51% to be repurchased at $2,020,309 on
  11/01/96. (Collateralized by $2,005,000 U.S. Treasury Note
  6.00%, due 05/31/98. Market value of collateral is
  $2,064,372.) (Cost $2,020,000)                                   2,020,000           2,020,000
                                                                                    ------------
TOTAL INVESTMENTS AT VALUE (101.1%) (Cost $30,450,913*)                               30,011,642
LIABILITIES IN EXCESS OF OTHER ASSETS (1.1%)                                           (313,520)
                                                                                    ------------
NET ASSETS (100.0%) (applicable to 3,012,008 shares outstanding)                    $ 29,698,122
                                                                                    ------------
                                                                                    ------------
NET ASSET VALUE, offering and redemption price per share
 ($29,698,122[div]3,012,008)                                                               $9.86
</TABLE>
 
- --------------------------------------------------------------------------------
`D' Non-income producing security.
 * Also cost for Federal income tax purposes.
 
                See Accompanying Notes to Financial Statements.
                                       23

<PAGE>
<PAGE>
WARBURG PINCUS INSTITUTIONAL FUND, INC.
STATEMENTS OF OPERATIONS
- --------------------------------------------------------------------------------
 
<TABLE>
<CAPTION>
                                                                  SMALL COMPANY GROWTH PORTFOLIO   EMERGING MARKETS PORTFOLIO
                                                                  ------------------------------   ---------------------------
                                 INTERNATIONAL EQUITY PORTFOLIO           FOR THE PERIOD                 FOR THE PERIOD
                                 ------------------------------         DECEMBER 29, 1995              SEPTEMBER 30, 1996
                                            FOR THE                      (COMMENCEMENT OF               (COMMENCEMENT OF
                                           YEAR ENDED                  OPERATIONS) THROUGH             OPERATIONS) THROUGH
                                        OCTOBER 31, 1996                 OCTOBER 31, 1996               OCTOBER 31, 1996
                                 ------------------------------   ------------------------------   ---------------------------
 
<S>                              <C>                              <C>                              <C>
INVESTMENT INCOME:
   Dividends                              $ 14,328,000                      $   32,544                      $   8,995
   Interest                                  1,587,858                         209,964                         57,226
   Foreign taxes withheld                   (1,830,522)                            (50)                        (1,732)
                                            ----------                        --------                        -------
 
       Total investment income              14,085,336                         242,458                         64,489
                                            ----------                        --------                        -------
EXPENSES:
   Investment advisory                       5,644,429                         268,768                         21,487
   Administrative services                   1,408,094                          59,726                          4,727
   Audit                                        30,996                          13,674                         12,000
   Custodian/Sub-Custodian                     516,854                          35,528                         11,004
   Directors                                     5,625                           1,875                            208
   Insurance                                    16,248                             326                              0
   Interest                                    131,146                               0                              0
   Legal                                        78,927                           7,505                          3,000
   Offering/Organizational
     Costs                                      23,819                          65,575                          6,231
   Printing                                      8,084                           8,798                          3,000
   Registration                                162,495                          34,209                          9,621
   Transfer Agent                               15,421                             886                            500
   Miscellaneous                                21,272                           6,944                          2,000
                                            ----------                        --------                        -------
                                             8,063,410                         503,814                         73,778
   Less fees waived and
     expenses reimbursed                    (1,360,650)                       (207,359)                       (46,919)
                                            ----------                        --------                        -------
       Total expenses                        6,702,760                         296,455                         26,859
                                            ----------                        --------                        -------
         Net investment income
           (loss)                            7,382,576                         (53,997)                        37,630
                                            ----------                        --------                        -------
 
NET REALIZED AND UNREALIZED
 GAIN (LOSS) FROM INVESTMENTS
 AND FOREIGN CURRENCY RELATED
 ITEMS:
   Net realized gain (loss)
     from security transactions             19,372,193                        (783,063)                        (5,175)
   Net realized gain from
     foreign currency related
     items                                  21,564,400                               0                          5,335
   Net change in unrealized
     appreciation
     (depreciation) from
     investments and foreign
     currency related items                  4,818,352                       3,210,524                       (439,668)
                                            ----------                        --------                        -------
   Net realized and unrealized
     gain (loss) from
     investments and foreign
     currency related items                 45,754,945                       2,427,461                       (439,508)
                                            ----------                        --------                        -------
   Net increase (decrease) in
     net assets resulting from
     operations                           $ 53,137,521                      $2,373,464                      $(401,878)
                                            ----------                        --------                        -------
                                            ----------                        --------                        -------
</TABLE>
 
                See Accompanying Notes to Financial Statements.
                                       24

 <PAGE>
<PAGE>
WARBURG PINCUS INSTITUTIONAL FUND, INC.
STATEMENTS OF CHANGES IN NET ASSETS
- --------------------------------------------------------------------------------
 
<TABLE>
<CAPTION>
                                 INTERNATIONAL EQUITY          SMALL COMPANY GROWTH PORTFOLIO     EMERGING MARKETS PORTFOLIO
                                       PORTFOLIO               ------------------------------     --------------------------
                             -----------------------------             FOR THE PERIOD                   FOR THE PERIOD
                                                                     DECEMBER 29, 1995                SEPTEMBER 30, 1996
                                  FOR THE YEAR ENDED                  (COMMENCEMENT OF                 (COMMENCEMENT OF
                                      OCTOBER 31,                   OPERATIONS) THROUGH              OPERATIONS) THROUGH
                                 1996             1995                OCTOBER 31, 1996                 OCTOBER 31, 1996
                             ------------     ------------     ------------------------------     --------------------------
 
<S>                          <C>              <C>              <C>                                <C>
FROM OPERATIONS:
 
   Net investment income
     (loss)                  $  7,382,576     $  4,659,886              $    (53,997)                    $     37,630
   Net realized gain
     (loss) from security
     transactions              19,372,193       (1,094,116)                 (783,063)                          (5,175)
   Net realized gain from
     foreign currency
     related items             21,564,400        3,076,737                         0                            5,335
   Net change in
     unrealized
     appreciation
     (depreciation) from
     investments and
     foreign currency
     related items              4,818,352       (6,017,482)                3,210,524                         (439,668)
                             ------------     ------------                ----------                       ----------
   Net increase
     (decrease) in net
     assets resulting
     from operations           53,137,521          625,025                 2,373,464                         (401,878)
                             ------------     ------------                ----------                       ----------
 
FROM DISTRIBUTIONS:
   Dividends from net
     investment income        (17,882,333)      (3,614,605)                        0                                0
   Distributions from
     realized gains                     0      (11,710,991)                        0                                0
                             ------------     ------------                ----------                       ----------
       Net decrease in
         net assets from
         distributions        (17,882,333)     (15,325,596)                        0                                0
                             ------------     ------------                ----------                       ----------
 
FROM CAPITAL SHARE
 TRANSACTIONS:
   Proceeds from sale of
     shares                   430,798,265      253,425,787                94,452,619                       30,000,000
   Reinvested dividends        13,380,860       13,607,235                         0                                0
   Net asset value of
     shares redeemed          (49,750,004)     (75,870,772)                        0                                0
                             ------------     ------------                ----------                       ----------
       Net increase in
         net assets from
         capital share
         transactions         394,429,121      191,162,250                94,452,619                       30,000,000
                             ------------     ------------                ----------                       ----------
       Net increase in
         net assets           429,684,309      176,461,679                96,826,083                       29,598,122
 
NET ASSETS:
   Beginning of period        507,758,891      331,297,212                     1,000                          100,000
                             ------------     ------------                ----------                       ----------
   End of period             $937,443,200     $507,758,891              $ 96,827,083                     $ 29,698,122
                             ------------     ------------                ----------                       ----------
                             ------------     ------------                ----------                       ----------
</TABLE>
 
                See Accompanying Notes to Financial Statements.
                                       25

<PAGE>
<PAGE>
WARBURG PINCUS INSTITUTIONAL FUND, INC. -- INTERNATIONAL EQUITY PORTFOLIO
FINANCIAL HIGHLIGHTS
(For a Share of the Portfolio Outstanding Throughout Each Period)
- --------------------------------------------------------------------------------
 
<TABLE>
<CAPTION>
                                                              FOR THE YEAR ENDED                 SEPTEMBER 1, 1992
                                                                  OCTOBER 31,                    (COMMENCEMENT OF
                                                    ---------------------------------------     OPERATIONS) THROUGH
                                                     1996       1995       1994       1993       OCTOBER 31, 1992
                                                    ------     ------     ------     ------     -------------------
<S>                                                 <C>        <C>        <C>        <C>        <C>
NET ASSET VALUE, BEGINNING OF PERIOD                $15.10     $16.34     $13.49     $ 9.62           $ 10.00
                                                    ------     ------     ------     ------             -----
   Income from Investment Operations:
   Net Investment Income                              0.26       0.15       0.17       0.10              0.02
   Net Gain/(Loss) from Securities and Foreign
     Currency Related Items (both realized and
     unrealized)                                      1.28      (0.64)      2.87       3.87             (0.40)
                                                    ------     ------     ------     ------             -----
       Total from Investment Operations               1.54      (0.49)      3.04       3.97             (0.38)
                                                    ------     ------     ------     ------             -----
   Less Distributions:
   Dividends from net investment income              (0.50)     (0.18)     (0.07)     (0.10)             0.00
   Distributions from net realized capital gains      0.00      (0.57)     (0.12)      0.00              0.00
                                                    ------     ------     ------     ------             -----
       Total Distributions                           (0.50)     (0.75)     (0.19)     (0.10)             0.00
                                                    ------     ------     ------     ------             -----
NET ASSET VALUE, END OF PERIOD                      $16.14     $15.10     $16.34     $13.49           $  9.62
                                                    ------     ------     ------     ------             -----
                                                    ------     ------     ------     ------             -----
Total Return                                         10.48%     (2.83%)    22.62%     41.61%            (3.80%)`D'
 
RATIOS /SUPPLEMENTAL DATA:
Net Assets, End of Period (000s)                  $937,443   $507,759   $331,297   $109,280           $18,613
 
Ratios to average daily net assets:
   Operating expenses                                 0.95%      0.95%      0.95%      0.95%             0.95%*
   Net investment income                              1.05%      1.20%      0.59%      0.75%             1.22%*
   Decrease reflected in above operating expense
     ratios due to waivers/reimbursements.            0.19%      0.23%      0.29%      0.44%             0.85%*
Portfolio Turnover Rate                              29.91%     39.70%     19.34%     19.40%             8.25%`D'
Average Commission Rate #                           $.0154         --         --         --                --
</TABLE>
 
- --------------------------------------------------------------------------------
`D' Non-Annualized
* Annualized
 
# Calculated  by  dividing the  total amount  of commissions  paid by  the total
  number of shares purchased and  sold during the period  for which there was  a
  commission charge.
 
                See Accompanying Notes to Financial Statements.
 
TAX STATUS OF 1996 DIVIDENDS (Unaudited)
 
Dividends paid by the Portlfolio taxable as ordinary income amounted to $.50 per
share.
 
Because the Portfolio's fiscal year is not the calendar year, amounts to be used
by  calendar year taxpayers  on their Federal  return will be  reflected on Form
1099-DIV and will be mailed in January 1997.
 
                                       26

 <PAGE>
<PAGE>
WARBURG PINCUS INSTITUTIONAL FUND, INC. -- SMALL COMPANY GROWTH PORTFOLIO
FINANCIAL HIGHLIGHTS
(For a Share of the Portfolio Outstanding Throughout the Period)
- --------------------------------------------------------------------------------
 
<TABLE>
<CAPTION>
                                                                                  DECEMBER 29, 1995
                                                                                  (COMMENCEMENT OF
                                                                                 OPERATIONS) THROUGH
                                                                                  OCTOBER 31, 1996
                                                                                 -------------------
<S>                                                                              <C>
NET ASSET VALUE, BEGINNING OF PERIOD                                                   $ 10.00
                                                                                         -----
   Income from Investment Operations:
 
   Net Investment Loss                                                                   (0.01)
 
   Net Gain on Securities
     (both realized and unrealized)                                                       2.93
                                                                                         -----
 
       Total from Investment Operations                                                   2.92
                                                                                         -----
 
NET ASSET VALUE, END OF PERIOD                                                         $ 12.92
                                                                                         -----
                                                                                         -----
Total Return                                                                             29.20%`D'
 
RATIOS /SUPPLEMENTAL DATA:
Net Assets, End of Period (000s)                                                       $96,827
 
Ratios to average daily net assets:
   Operating expenses                                                                     0.99%*
   Net investment loss                                                                   (0.18%)*
   Decrease reflected in above operating expense ratios due to
     waivers/reimbursements                                                               0.69%*
Portfolio Turnover Rate                                                                  57.38%`D'
Average Commission Rate #                                                              $ .0560
</TABLE>
 
- --------------------------------------------------------------------------------
`D' Non-Annualized
* Annualized
 
# Calculated by  dividing the  total amount  of commissions  paid by  the  total
  number  of shares purchased and  sold during the period  for which there was a
  commission charge.
 
                See Accompanying Notes to Financial Statements.
                                       27

 <PAGE>
<PAGE>
WARBURG PINCUS INSTITUTIONAL FUND, INC. -- EMERGING MARKETS PORTFOLIO
FINANCIAL HIGHLIGHTS
(For a Share of the Portfolio Outstanding Throughout the Period)
- --------------------------------------------------------------------------------
 
<TABLE>
<CAPTION>
                                                                                 SEPTEMBER 30, 1996
                                                                                  (COMMENCEMENT OF
                                                                                    OPERATIONS)
                                                                                      THROUGH
                                                                                  OCTOBER 31, 1996
                                                                                 ------------------
<S>                                                                              <C>
NET ASSET VALUE, BEGINNING OF PERIOD                                                   $10.00
                                                                                        -----
   Income from Investment Operations:
   Net Investment Income                                                                 0.01
   Net Loss on Securities (both realized and unrealized)                                (0.15)
                                                                                        -----
       Total from Investment Operations                                                 (0.14)
                                                                                        -----
NET ASSET VALUE, END OF PERIOD                                                         $ 9.86
                                                                                        -----
                                                                                        -----
Total Return                                                                            (1.40%)`D'
 
RATIOS /SUPPLEMENTAL DATA:
Net Assets, End of Period (000s)                                                      $29,698
 
Ratios to average daily net assets:
   Operating expenses                                                                    1.25%*
   Net investment income                                                                 1.75%*
   Decrease reflected in above operating expense ratios due to
     waivers/reimbursements                                                              2.18%*
Portfolio Turnover Rate                                                                  2.39%`D'
Average Commission Rate #                                                             $ .0120
</TABLE>
 
- --------------------------------------------------------------------------------
`D' Non-Annualized
* Annualized
 
# Calculated by  dividing the  total amount  of commissions  paid by  the  total
  number  of shares purchased and  sold during the period  for which there was a
  commission charge.
 
                See Accompanying Notes to Financial Statements.
                                       28

<PAGE>
<PAGE>
WARBURG PINCUS INSTITUTIONAL FUND, INC.
NOTES TO FINANCIAL STATEMENTS
October 31, 1996
- --------------------------------------------------------------------------------
 
1. SIGNIFICANT ACCOUNTING POLICIES
 
   Warburg   Pincus  Institutional  Fund,  Inc.  (the  'Fund')  is  an  open-end
management investment company and currently offers four managed investment funds
(the 'Portfolios'): International Equity  Portfolio, which commenced  operations
on  September  1, 1992,  seeks long-term  capital  appreciation by  investing in
equity securities of principally non-United States issuers; Small Company Growth
Portfolio, which commenced operations on December 29, 1995, seeks capital growth
by investing primarily in equity  securities of small-sized domestic  companies;
Global  Fixed Income Portfolio, which as of  October 31, 1996, had not commenced
operations, seeks to  maximize total investment  return consistent with  prudent
investment  management while preserving capital by investing in investment grade
fixed income securities of issuers throughout the world, including United States
issuers; and Emerging Markets Portfolio, which commenced operations on September
30, 1996, seeks growth of capital by investing primarily in equity securities of
companies in emerging securities markets.
 
   The net asset values of the Portfolios  are determined daily as of the  close
of  regular trading on the New  York Stock Exchange. The Portfolio's investments
are valued  at  market value,  which  is  currently determined  using  the  last
reported sales price. If no sales are reported, investments are generally valued
at  the  last  reported  mean  price.  In  the  absence  of  market  quotations,
investments are generally  valued at fair  value as determined  by or under  the
direction  of the Fund's Board of  Directors. Short-term investments that mature
in 60 days or less are valued on the basis of amortized cost, which approximates
market value.
 
   The books  and records  of the  Portfolios are  maintained in  U.S.  dollars.
Transactions  denominated  in foreign  currencies  are recorded  at  the current
prevailing exchange rates.  All assets  and liabilities  denominated in  foreign
currencies  are translated into U.S. dollar amounts at the current exchange rate
at the end of the period. Translation gains or losses resulting from changes  in
the  exchange rate during the reporting period  and realized gains and losses on
the settlement of foreign currency transactions  are reported in the results  of
operations  for the current  period. The Fund  does not isolate  that portion of
gains and losses on investments in equity securities which are due to changes in
the foreign exchange rate from that which are due to changes in market prices of
equity securities.  The  Fund isolates  that  portion  of gains  and  losses  on
investments  in debt securities which are due to changes in the foreign exchange
rate from that which are due to changes in market prices of debt securities.
 
   Security transactions  are accounted  for  on a  trade date  basis.  Interest
income  is  recorded  on  the  accrual  basis.  Dividends  are  recorded  on the
ex-dividend date.  The cost  of investments  sold is  determined by  use of  the
specific  identification  method for  both  financial reporting  and  income tax
purposes.
 
                                       29

 <PAGE>
<PAGE>
WARBURG PINCUS INSTITUTIONAL FUND, INC.
NOTES TO FINANCIAL STATEMENTS (CONT'D)
October 31, 1996
- --------------------------------------------------------------------------------
 
1. SIGNIFICANT ACCOUNTING POLICIES (CONT'D)
   Dividends from  net  investment  income and  distributions  of  net  realized
capital  gains, if any, are  declared and paid annually.  However, to the extent
that a net realized  capital gain can  be reduced by  a capital loss  carryover,
such  gain will  not be distributed.  Income and capital  gain distributions are
determined in accordance with  Federal income tax  regulations which may  differ
from generally accepted accounting principles.
 
   No  provision is made for Federal taxes as it is the Fund's intention to have
each portfolio continue to qualify for and elect the tax treatment applicable to
regulated investment  companies under  the Internal  Revenue Code  and make  the
requisite  distributions to its shareholders which will be sufficient to relieve
it from Federal income and excise taxes.
 
   Costs incurred by the Portfolios  in connection with their organization  have
been  deferred and are being amortized over a period of five years from the date
each Portfolio commences  its operations.  Costs incurred by  the Portfolios  in
connection  with the  offering of  its shares have  been deferred  and are being
amortized over a  one year  period from the  date each  Portfolio commences  its
operations.
 
   The  Portfolios may enter  into repurchase agreement  transactions. Under the
terms of  a typical  repurchase agreement,  a Portfolio  acquires an  underlying
security  subject to an obligation of the seller to repurchase. The value of the
underlying security collateral will be maintained at an amount at least equal to
the total amount of the purchase obligation, including interest. The  collateral
is in the Portfolio's possession.
 
   The  Fund,  together  with  other  Warburg-advised  funds  (collectively  the
'Warburg Funds'),  has  established committed  and  uncommitted line  of  credit
facilities  with  certain banks  for temporary  or emergency  purposes primarily
relating to fund share redemptions and  funding payments of dividend or  capital
gain distributions. Under the terms of the committed line of credit, the Warburg
Funds  with access to  the facility pay a  commitment fee at a  rate of .10% per
annum on the amount of the line of credit. In addition, under the terms of  both
the committed and uncommitted facilities, the Warburg Funds will pay interest on
borrowings  at the banks base rate plus .55%. Aggregate borrowings for each fund
under these credit facilities may not exceed the lower of (a) the maximum amount
permitted by  such fund's  investment policies  and restrictions  or (b)  thirty
three  and one-third percent (33  1/3%) of such fund's  total assets. At October
31, 1996  there  were  no  outstanding  balances  under  these  line  of  credit
facilities for any of the Portfolios.
 
   The preparation of financial statements in conformity with generally accepted
accounting principles requires management to make estimates and assumptions that
affect  the  reported amounts  of  assets and  liabilities  at the  date  of the
financial
 
                                       30

 <PAGE>
<PAGE>
WARBURG PINCUS INSTITUTIONAL FUND, INC.
NOTES TO FINANCIAL STATEMENTS (CONT'D)
October 31, 1996
- --------------------------------------------------------------------------------
statement and the reported amounts of revenues and expenses during the reporting
period. Actual results could differ from these estimates.
 
   The Portfolios have an arrangement with their transfer agent whereby interest
earned on uninvested cash balances was used to offset a portion of the  transfer
agent  expense. For the period ended  October 31, 1996, the International Equity
Portfolio, the Small Company Growth Portfolio and the Emerging Markets Portfolio
had credits or reimbursements of $58,005,  $202 and $0, respectively under  this
arrangement.
 
2. INVESTMENT ADVISER, CO-ADMINISTRATORS AND DISTRIBUTOR
 
   Warburg,  Pincus Counsellors, Inc. ('Warburg'),  a wholly owned subsidiary of
Warburg,  Pincus  Counsellors   G.P.  ('Counsellors  G.P.'),   serves  as   each
Portfolio's  investment adviser.  For its investment  advisory services, Warburg
receives the following fees based on each Portfolio's average daily net assets:
 
<TABLE>
<CAPTION>
                   PORTFOLIO                                   ANNUAL RATE
- ------------------------------------------------    ----------------------------------
<S>                                                 <C>
International Equity                                .80% of average daily net assets
Small Company Growth                                .90% of average daily net assets
Emerging Markets                                    1.00% of average daily net assets
</TABLE>
 
   For the period ended October 31, 1996, investment advisory fees, waivers  and
reimbursements were as follows:
 
<TABLE>
<CAPTION>
                              GROSS                             NET             EXPENSE
       PORTFOLIO           ADVISORY FEE       WAIVER        ADVISORY FEE     REIMBURSEMENTS
- -----------------------    ------------     -----------     ------------     --------------
<S>                        <C>              <C>             <C>              <C>
International Equity        $5,644,429      $(1,182,795)     $4,461,634         $      0
Small Company Growth           268,768         (122,453)        146,315          (74,803)
Emerging Markets                21,487          (21,487)              0          (22,854)
</TABLE>
 
   Counsellors  Funds  Service,  Inc.  ('CFSI'), a  wholly  owned  subsidiary of
Warburg, and PFPC  Inc. ('PFPC'), an  indirect, wholly owned  subsidiary of  PNC
Bank  Corp.  ('PNC'),  serve  as  each  Portfolio's  co-administrators.  For its
administrative services, CFSI  receives a fee  calculated at an  annual rate  of
 .10%  of the Portfolios' average daily net  assets. For the period ended October
31, 1996, administrative services fees earned by CFSI were as follows:
 
<TABLE>
<CAPTION>
                      PORTFOLIO                           CO-ADMINISTRATION FEE
- ------------------------------------------------------    ---------------------
<S>                                                       <C>
International Equity                                            $ 705,554
Small Company Growth                                               29,863
Emerging Markets                                                    2,149
</TABLE>
 
   For its administrative services for the Small Company Growth Portfolio,  PFPC
currently  receives a fee  calculated at an  annual rate of  .10% on each Fund's
first $500 million in average daily net assets, .075% on the next $1 billion  in
average  daily net assets and .05% of average daily net assets in excess of $1.5
billion. For
 
                                       31

 <PAGE>
<PAGE>
WARBURG PINCUS INSTITUTIONAL FUND, INC.
NOTES TO FINANCIAL STATEMENTS (CONT'D)
October 31, 1996
- --------------------------------------------------------------------------------
 
2. INVESTMENT ADVISER, CO-ADMINISTRATORS AND DISTRIBUTOR (CONT'D)
the International  Equity Portfolio  and the  Emerging Markets  Portfolio,  PFPC
receives a fee based on the following fee structure:
 
<TABLE>
<CAPTION>
AVERAGE DAILY NET ASSETS                                        ANNUAL RATE
- -------------------------------------------------    ---------------------------------
<S>                                                  <C>
First $250 million                                   .12% of average daily net assets
Second $250 million                                  .10% of average daily net assets
Third $250 million                                   .08% of average daily net assets
Over $750 million                                    .05% of average daily net assets
</TABLE>
 
   For the period ended October 31, 1996, administrative service fees earned and
waived by PFPC were as follows:
 
<TABLE>
<CAPTION>
                                                                               NET
        PORTFOLIO             CO-ADMINISTRATION FEE      WAIVER       CO-ADMINISTRATION FEE
- --------------------------    ---------------------     ---------     ---------------------
<S>                           <C>                       <C>           <C>
International Equity                $ 702,540           $(119,850)          $ 582,690
Small Company Growth                   29,863              (9,901)             19,962
Emerging Markets                        2,578              (2,578)                  0
</TABLE>
 
   Counsellors  Securities  Inc.  ('CSI'),  also a  wholly  owned  subsidiary of
Warburg, acts  as distributor  of each  Portfolio's shares.  No compensation  is
payable by the Portfolios to CSI for its distribution services.
 
3. INVESTMENTS IN SECURITIES
 
   Purchases and sales of investment securities for the period ended October 31,
1996 (excluding short-term investments) were as follows:
 
<TABLE>
<CAPTION>
                   PORTFOLIO                         PURCHASES          SALES
- ------------------------------------------------    ------------     ------------
<S>                                                 <C>              <C>
International Equity                                $583,800,645     $200,686,055
Small Company Growth                                 108,756,717       18,332,136
Emerging Markets                                      28,751,679          334,650
</TABLE>
 
   At  October 31,  1996, the net  unrealized appreciation  from investments for
those securities having an excess of  value over cost and net depreciation  from
investments  for those securities having an excess  of cost over value (based on
cost for Federal income tax purposes) was as follows:
 
<TABLE>
<CAPTION>
                                                                          NET UNREALIZED
                                         UNREALIZED       UNREALIZED       APPRECIATION
             PORTFOLIO                  APPRECIATION     DEPRECIATION     (DEPRECIATION)
- ------------------------------------    ------------     ------------     --------------
<S>                                     <C>              <C>              <C>
International Equity                    $94,324,502      $(57,909,869)     $ 36,414,633
Small Company Growth                      8,530,062        (5,329,000)        3,201,062
Emerging Markets                            540,230          (979,501)         (439,271)
</TABLE>
 
4. FORWARD FOREIGN CURRENCY CONTRACTS
 
   The Portfolios may enter into forward currency contracts for the purchase  or
sale of a specific foreign currency at a fixed price on a future date. Risks may
arise  upon  entering  into  these contracts  from  the  potential  inability of
counterparties to  meet the  terms  of their  contracts and  from  unanticipated
movements  in the value of a foreign  currency relative to the U.S. dollar. Each
Portfolio will enter into forward contracts primarily for hedging purposes.  The
forward  currency  contracts are  adjusted  by the  daily  exchange rate  of the
underlying currency and
 
                                       32

 <PAGE>
<PAGE>
WARBURG PINCUS INSTITUTIONAL FUND, INC.
NOTES TO FINANCIAL STATEMENTS (CONT'D)
October 31, 1996
- --------------------------------------------------------------------------------
any gains or losses are recorded for financial statement purposes as  unrealized
until the contract settlement date.
 
   At  October 31,  1996, the International  Equity Portfolio  had the following
open forward foreign currency contracts:
 
<TABLE>
<CAPTION>
                                       FOREIGN                                              UNREALIZED
FORWARD CURRENCY    EXPIRATION        CURRENCY           CONTRACT         CONTRACT       FOREIGN EXCHANGE
    CONTRACT           DATE          TO BE SOLD           AMOUNT           VALUE           GAIN (LOSS)
- ----------------    ----------     ---------------     ------------     ------------     ----------------
<S>                 <C>            <C>                 <C>              <C>              <C>
French Francs        03/05/97         203,400,000      $ 39,995,281     $ 40,089,087        $  (93,806)
German Marks         04/02/97          72,366,816        48,000,000       48,292,836          (292,836)
Japanese Yen         10/24/97       6,535,619,300        61,000,000       60,458,398           541,602
Japanese Yen         10/24/97       5,900,180,000        55,000,000       54,580,203           419,797
Japanese Yen         10/24/97       5,252,751,000        49,000,000       48,591,097           408,903
                                                       ------------     ------------          --------
                                                       $252,995,281     $252,011,621        $  983,660
                                                       ------------     ------------          --------
                                                       ------------     ------------          --------
</TABLE>
 
5. CAPITAL SHARE TRANSACTIONS
 
   The Fund  is authorized  to issue  up to  three billion  full and  fractional
shares  of common stock of  separate series having a  $.001 par value per share.
Shares of three series  have been authorized, which  constitute the interest  in
the Portfolios.
 
   Transactions in shares of each Portfolio were as follows:
 
<TABLE>
<CAPTION>
                                                     SMALL COMPANY GROWTH     EMERGING MARKETS
                                                          PORTFOLIO              PORTFOLIO
                      INTERNATIONAL EQUITY           --------------------   --------------------
                            PORTFOLIO                   FOR THE PERIOD         FOR THE PERIOD
               -----------------------------------    DECEMBER 29, 1995      SEPTEMBER 30, 1996
                 FOR THE YEAR         FOR THE          (COMMENCEMENT OF       (COMMENCEMENT OF
                    ENDED            YEAR ENDED      OPERATIONS) THROUGH    OPERATIONS) THROUGH
               OCTOBER 31, 1996   OCTOBER 31, 1995     OCTOBER 31, 1996       OCTOBER 31, 1996
               ----------------   ----------------   --------------------   --------------------
<S>            <C>                <C>                <C>                    <C>
Shares sold       26,659,175         17,573,932            7,493,539              3,002,008
Shares issued
 to
 shareholders
 on
 reinvestment
 of dividends        898,044            939,078                    0                      0
Shares
 redeemed         (3,123,266)        (5,146,019)                   0                      0
                    --------           --------              -------                -------
Net increase
 in shares
 outstanding      24,433,953         13,366,991            7,493,539              3,002,008
                    --------           --------              -------                -------
                    --------           --------              -------                -------
</TABLE>
 
                                       33

 <PAGE>
<PAGE>
WARBURG PINCUS INSTITUTIONAL FUND, INC.
NOTES TO FINANCIAL STATEMENTS (CONT'D)
October 31, 1996
- --------------------------------------------------------------------------------
 
6. NET ASSETS
 
   Net assets at October 31, 1996, consisted of the following:
 
<TABLE>
<CAPTION>
                               INTERNATIONAL EQUITY   SMALL COMPANY GROWTH   EMERGING MARKETS
                                    PORTFOLIO              PORTFOLIO            PORTFOLIO
                               --------------------   --------------------   ----------------
<S>                            <C>                    <C>                    <C>
Capital contributed, net           $866,043,910           $ 94,399,622         $ 30,100,000
Accumulated net investment
 income                              18,518,234                      0               42,965
Accumulated net realized gain
 (loss) from security
 transactions                        15,533,772               (783,063)              (5,175)
Net unrealized appreciation
 (depreciation) from
 investments and foreign
 currency related items              37,347,284              3,210,524             (439,668)
                                    -----------             ----------       ----------------
Net assets                         $937,443,200           $ 96,827,083         $ 29,698,122
                                    -----------             ----------       ----------------
                                    -----------             ----------       ----------------
</TABLE>
 
7. CAPITAL LOSS CARRYOVER
 
   At  October 31,  1996, the  Small Company  Growth Portfolio  and the Emerging
Markets  Portfolio  had  capital  loss   carryovers  of  $773,601  and   $5,175,
respectively, expiring in 2004 to offset possible future capital gains.
 
                                       34

<PAGE>
<PAGE>
WARBURG PINCUS INSTITUTIONAL FUNDS
REPORT OF INDEPENDENT ACCOUNTANTS
- --------------------------------------------------------------------------------
To the Board of Directors, Trustees and Shareholders of
WARBURG PINCUS INSTITUTIONAL FUND
 
We  have audited the accompanying statements of net assets of the Warburg Pincus
Institutional Fund, Inc. -- International Equity Portfolio, Small Company Growth
Portfolio and Emerging Markets  Portfolio (all portfolios collectively  referred
to  as the 'Warburg Pincus Institutional Fund')  as of October 31, 1996, and the
related statements of operations for the  year (or periods) then ended, and  the
statements  of changes in net  assets for each of the  two years (or periods) in
the period then ended and  the financial highlights for  each of the four  years
(or  periods) in the period then ended. These financial statements and financial
highlights are the responsibility of  the Fund's management. Our  responsibility
is  to express an opinion on these financial statements and financial highlights
based  on  our  audits.   The  financial  highlights   of  the  Warburg   Pincus
Institutional  Fund, Inc. -- International Equity Portfolio for the period ended
October 31, 1992, were  audited by other auditors,  whose report dated  December
15, 1992, expressed an unqualified opinion.
 
We   conducted  our  audits  in  accordance  with  generally  accepted  auditing
standards. Those standards require that we plan and perform the audit to  obtain
reasonable  assurance  about  whether  the  financial  statements  and financial
highlights are free of material misstatement. An audit includes examining, on  a
test  basis, evidence  supporting the amounts  and disclosures  in the financial
statements. Our  procedures  included confirmation  of  securities owned  as  of
October  31, 1996,  by correspondence with  the custodian and  brokers. An audit
also includes assessing the accounting principles used and significant estimates
made by  management,  as well  as  evaluating the  overall  financial  statement
presentation.  We believe  that our  audits provide  a reasonable  basis for our
opinion.
 
In our opinion, the  financial statements and  financial highlights referred  to
above  present fairly, in  all material respects, the  financial position of the
Warburg Pincus Institutional Fund as of October 31, 1996, and the results of its
operations for the  year (or periods)  then ended,  and the changes  in its  net
assets  for each of the two years (or  periods) in the period then ended and the
financial highlights for each of the four years (or periods) in the period  then
ended, in conformity with generally accepted accounting principles.
 
COOPERS & LYBRAND L.L.P.
 
2400 Eleven Penn Center
Philadelphia, PA
December 18, 1996
 
                                       35

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<PAGE>
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                              STATEMENT OF DIFFERENCES
                              ------------------------

The dagger symbol shall be expressed as 'D'
The division sign shall be expressed as [div]

<PAGE>
<PAGE>
- --------------------------------------------------------------------------------
 
                                     [Logo]

                      P.O. BOX 9030, BOSTON, MA 02205-9030
                                  800-369-2728

          COUNSELLORS SECURITIES INC., DISTRIBUTOR        WPINS-2-1096



                              STATEMENT OF DIFFERENCES
                              ------------------------

The dagger symbol shall be expressed as `D'
The division sign shall be expressed as [div]




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