GABELLI EQUITY SERIES FUNDS INC
N-30D, 2000-05-18
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                        THE GABELLI SMALL CAP GROWTH FUND

                               SEMI-ANNUAL REPORT
                                MARCH 31, 2000(A)

TO OUR SHAREHOLDERS,

      In the first  quarter of 2000,  small cap stocks  extended  the rally that
began in the fourth quarter of 1999. The advance  remained  rather narrow,  with
technology  stocks  fueling  much of the Russell  2000's rise.  Despite  limited
technology holdings, the Fund posted competitive gains versus its benchmark.

      After years of lagging  large cap stocks,  small caps appear to have taken
over  market  leadership.  The small cap stock  arena is once  again  attracting
assets from institutions and individual investors.  This favorable flow of funds
should provide a performance tailwind for this long neglected market sector.

INVESTMENT PERFORMANCE

      For the quarter ended March 31, 2000,  The Gabelli Small Cap Growth Fund's
(the "Fund") total return was 3.78%.  The Value Line  Composite and Russell 2000
Indices  had total  returns  of 4.03%  and  7.08%,  respectively,  over the same
period. Each index is an unmanaged  indicator of stock market  performance.  The
Fund was up  27.13%  over the  trailing  twelve-month  period.  The  Value  Line
Composite  and Russell 2000 Indices rose 19.47% and 37.29%,  respectively,  over
the same twelve-month period.

      For the  five-year  period ended March 31,  2000,  the Fund's total return
averaged  16.09% annually versus average annual returns of 17.21% and 17.24% for
the Value Line Composite and Russell 2000 Indices, respectively. Since inception
on October 22, 1991  through  March 31, 2000,  the Fund had a  cumulative  total
return of 299.19%, which equates to an average annual total return of 17.80%.

 -------------------------------------------------------------------------------
(a) The Fund's fiscal year ends September 30.
<PAGE>

INVESTMENT RESULTS (a)(c)
- --------------------------------------------------------------------------------
                                      Calendar Quarter
                           -------------------------------------
                            1st       2nd       3rd        4th        Year
                            ---       ---       ---        ---        ----
2000:   Net Asset Value    $22.24     --         --         --         --
        Total Return         3.8%     --         --         --         --
- ---------------------------------------------------------------------------
1999:   Net Asset Value    $19.59    $22.94    $21.84     $21.43     $21.43
        Total Return       (6.8)%     17.1%    (4.8)%       9.9%      14.2%
- ---------------------------------------------------------------------------
1998:   Net Asset Value    $23.93    $23.59    $18.81     $21.01     $21.01
        Total Return        10.9%    (1.4)%   (20.3)%      14.7%       0.0%
- ---------------------------------------------------------------------------
1997:   Net Asset Value    $19.11    $22.23    $25.42     $21.58     $21.58
        Total Return         3.1%     16.3%     14.7%     (0.8)%      36.5%
- ---------------------------------------------------------------------------
1996:   Net Asset Value    $19.65    $20.68    $20.02     $18.53     $18.53
        Total Return         6.2%      5.2%    (3.2)%       3.4%      11.9%
- ---------------------------------------------------------------------------
1995:   Net Asset Value    $17.03    $17.88    $19.34     $18.50     $18.50
        Total Return         7.4%      5.0%      8.2%       2.6%      25.2%
- ---------------------------------------------------------------------------
1994:   Net Asset Value    $16.76    $16.33    $17.24     $15.85     $15.85
        Total Return       (3.6)%    (2.6)%      5.6%     (2.1)%     (2.9)%
- ---------------------------------------------------------------------------
1993:   Net Asset Value    $15.46    $15.74    $16.90     $17.38     $17.38
        Total Return         6.6%      1.8%      7.4%       5.3%      22.8%
- ---------------------------------------------------------------------------
1992:   Net Asset Value    $13.42    $13.41    $13.10     $14.50     $14.50
        Total Return         9.9%    (0.1)%    (2.3)%      12.1%      20.3%
- ---------------------------------------------------------------------------
1991:   Net Asset Value       __        __       __       $12.21     $12.21
        Total Return          __        __       __        22.9%(b)   22.9%(b)
- ---------------------------------------------------------------------------


- ------------------------------------------------------
       Average Annual Returns - March 31, 2000 (a)
       -------------------------------------------
  1 Year .....................................  27.13%
  5 Year .....................................  16.09%
  Life of Fund (b) ...........................  17.80%
- ------------------------------------------------------


                    Dividend History
- -------------------------------------------------------
Payment (ex) Date   Rate Per Share   Reinvestment Price
- -----------------   --------------   ------------------
December 20, 1999        $2.462           $20.55
December 21, 1998        $0.534           $19.80
December 29, 1997        $3.590           $21.29
September 30, 1997       $0.070           $25.42
December 27, 1996        $2.160           $18.46
December 29, 1995        $1.340           $18.50
December 30, 1994        $1.030           $15.85
December 31, 1993        $0.420           $17.38
December 31, 1992        $0.185           $14.50
December 31, 1991        $0.080           $12.21


(a) Total returns and average annual returns  reflect changes in share price and
reinvestment  of dividends  and are net of expenses.  The net asset value of the
Fund is reduced on the ex-dividend  (payment) date by the amount of the dividend
paid.Of course,  returns  represent past performance and do not guarantee future
results.  Investment  returns  and the  principal  value of an  investment  will
fluctuate.  When shares are  redeemed  they may be worth more or less than their
original cost.  (b) From  commencement  of investment  operations on October 22,
1991.  (c) The Fund's fiscal year ends  September  30. Note:  Investing in small
capitalization  securities  involves special challenges because these securities
may trade less  frequently and experience more abrupt price movements than large
capitalization securities.
- --------------------------------------------------------------------------------
                                        2

<PAGE>

WHAT WE DO

      We view the small  capitalization  stock market as a research driven stock
picker's paradise. Unlike the large cap market, where most companies are closely
followed  by dozens of Wall  Street  analysts,  the small cap  market is largely
unclaimed  territory.  Our analysts put on their  hiking  shoes,  strap on their
backpacks and hit the trails  looking for little  companies Wall Street does not
know or care about.  They are  seeking a  particular  type of company,  which we
would describe generally as having a dominant market share, niche franchise in a
growing and/or consolidating industry.

[Graphic omitted]
Pyramid text as follows:
      EPS
      PMV
      MANAGEMENT
      CASH FLOW
      RESEARCH

      Our analysts are guided by specific  investment  principles  that include:
experienced  management,  healthy  balance  sheets and rising free cash flow and
earnings.  They also live by  certain  value  parameters--their  goal is to find
great  companies  trading at  reasonable  valuations  relative  to "real  world"
economic worth.  These are the kinds of companies we can feel comfortable owning
long term, rather than trading like so many small cap investors are prone to do.

COMMENTARY

      The following was excerpted  from an article  written by Mario J. Gabelli,
our Chief Investment Officer,  which will appear in an upcoming edition of Cigar
Afficionado magazine:

      "IN  RECENT  YEARS,  WE HAVE SEEN  UNPRECEDENTED  MERGER  AND  ACQUISITION
ACTIVITY--WHAT WE HAVE TERMED THE THIRD GREAT WAVE OF TAKEOVERS.  IN 1999, THERE
WAS $3.4 TRILLION WORTH OF CORPORATE  TRANSACTIONS  WORLDWIDE.  IN FIRST QUARTER
2000,  M&A ACTIVITY  REMAINED  TORRID WITH $1.2 TRILLION IN GLOBAL DEALS,  ($600
BILLION IN THE U.S),  COMPARED TO $1.1 TRILLION IN FOURTH QUARTER 1999. WE COULD
SEE M&A NUMBERS  EXCEED LAST YEAR'S  IMPRESSIVE  TOTALS.  IN ADDITION TO ALL THE
CORPORATE    MERGER    AND    ACQUISITION    ACTIVITY,    THE   OLD    FINANCIAL
ENGINEERS--LEVERAGED  BUYOUT  SPECIALISTS--ARE  RESURFACING TO TAKE ADVANTAGE OF
EXCEPTIONAL BARGAINS IN DEPRESSED "OLD ECONOMY" STOCKS...

      THROUGH THE YEARS, WE HAVE HAD MANY PORTFOLIO COMPANIES STRUCK BY TAKEOVER
AND LEVERAGED BUYOUT LIGHTNING...WE LOOK FOR BUSINESS  BARGAINS--STOCKS  TRADING
SIGNIFICANTLY  BELOW OUR  APPRAISAL OF THEIR "REAL  WORLD"  ECONOMIC  VALUE.  WE
ANALYZE  STOCKS FROM THE VERY SAME  PERSPECTIVE  AS CORPORATE  ACQUIRERS AND LBO
FIRMS, FOCUSING ON CASH FLOW AFTER CAPITAL EXPENDITURES AND ASSET VALUES, RATHER
THAN EARNINGS PER SHARE.

      TODAY,  I WILL WALK YOU THROUGH THE BASICS OF WHAT WE CALL PRIVATE  MARKET
VALUE INVESTING... I'LL ALSO DEMONSTRATE HOW YOU CAN BENEFIT BY INVESTING IN THE
"BACK END" OF DEALS THROUGH RISK ARBITRAGE.

      (YEARS  AGO) I CAME TO THE  REALIZATION  THAT THE KEY WAS FREE CASH  FLOW,
WHICH  WE  DEFINED  AS  EARNINGS  BEFORE  INTEREST,  TAXES,  DEPRECIATION,   AND
AMORTIZATION  (EBITDA)  MINUS THE  NECESSARY  CAPITAL  EXPENDITURES  TO GROW THE
BUSINESS.  WHY FREE CASH FLOW RATHER THAN NET  EARNINGS?  BECAUSE WHEN VALUING A
BUSINESS

                                        3

<PAGE>

INVESTMENT  YOUR  PRIMARY  INTEREST  IS HOW MUCH CASH IT THROWS  OFF. IF YOU ARE
FINANCING  THE PURCHASE  WITH  DEBT--CHARACTERISTIC  OF THE LEVERAGE  BUYOUT--IT
DETERMINES  HOW  MUCH  YOU  CAN  PAY  FOR  THE  BUSINESS  AND  COMFORTABLY  MEET
OBLIGATIONS  ON THE DEBT INCURRED IN THE  TRANSACTION.  IF YOU ARE FINANCING THE
DEAL  WITH  CASH,  YOU WANT TO KNOW HOW  QUICKLY  YOUR  INVESTMENT  WILL PAY FOR
ITSELF.  IF YOU ARE  USING  STOCK,  YOU  NEED TO KNOW  WHETHER  THE  CASH  BEING
GENERATED BY YOUR TARGETED ACQUISITION WILL ADD TO EARNINGS AND HELP PROPEL YOUR
STOCK HIGHER...

      USING THIS METHODOLOGY, I WAS ABLE TO IDENTIFY A LOT OF BUSINESS BARGAINS.
BUT  BARGAINS  OFTEN  GATHER  DUST ON THE  PORTFOLIO  SHELF.  SO, I LOOKED FOR A
CATALYST--SOME ELEMENT OF CHANGE THAT WOULD MARK UP PORTFOLIO MERCHANDISE. OFTEN
THAT CATALYST WAS A POTENTIAL  DEAL. IN ANALYZING  COMPANIES  WITH SOME TAKEOVER
FLAVOR,  I SOUGHT  ANSWERS FOR A NUMBER OF QUESTIONS.  IS A TARGET  COMPANY IN A
FRAGMENTED  INDUSTRY THAT IS LIKELY TO BE CONSOLIDATED  BY LARGER PLAYERS?  WHAT
HAS MANAGEMENT DONE IN THE PAST TO ENHANCE  SHAREHOLDER  VALUE?  DOES MANAGEMENT
OWN  ENOUGH  STOCK TO  FINANCIALLY  INCENTIVIZE  THEM TO  CONSIDER  SELLING  THE
BUSINESS  OR ARE THEY  SIMPLY  HIRED GUNS THAT WOULD  BLOCK A DEAL TO SAVE THEIR
JOBS? ARE THERE ANY ANTI-TAKEOVER DEFENSES (STAGGERED BOARDS, POISON PILLS ETC.)
THAT  WOULD  PRECLUDE  A HOSTILE  BID FOR THE  COMPANY?  HAVE THERE BEEN ANY 13D
FILINGS (SEC FILINGS INDICATING SOMEONE HAS BOUGHT MORE THAN 5% OF THE COMPANY'S
SHARES)?  IF SO, DO THE BUSINESSES OF THE TWO COMPANIES  COMPLEMENT  EACH OTHER?
ARE THERE ANY POTENTIAL  REGULATORY OR ANTI-TRUST  PROBLEMS THAT COULD PREVENT A
DEAL? IF I CAME UP WITH THE RIGHT ANSWERS TO THESE QUESTIONS, WE WOULD GENERALLY
BUY THE STOCK.

      YOU MAY BE THINKING,  'GREAT, MARIO... GIVE US A FEW NAMES THAT MIGHT HELP
US MAKE A BIG  SCORE.'  FAIR  ENOUGH.  MARK IV  INDUSTRIES  (NYSE,  IV),  WYNN'S
INTERNATIONAL  (NYSE,  WN), AND SYBRON CHEMICAL  (AMEX,  SYC) ARE ALL TRADING AT
DEEP DISCOUNTS TO OUR PRIVATE MARKET VALUE  APPRAISALS,  AND THERE ARE CATALYSTS
IN PLACE THAT LEAD US TO BELIEVE  THESE  COMPANIES  MIGHT  RECEIVE SOME INTEREST
FROM A CORPORATE  ACQUIRER OR LBO GROUP. I'M NOT SUGGESTING A PROFITABLE "EVENT"
IS JUST AROUND THE CORNER.  BUT,  THESE  STOCKS ARE FAIRLY  COMPELLING  BASED ON
THEIR OWN MERITS AS INDEPENDENT COMPANIES."

THIS QUARTER'S REPORT CARD

      As usual,  stocks getting the highest performance grades this quarter come
from a wide variety of industry groups. Our Dean's List includes a nutraceutical
company  (Omni  Nutraceuticals),  a travel  agent  (Travel  Services),  a gaming
company (Jackpot Enterprises), a technology company (Oak Technology) and a hotel
company (Bristol Hotels and Resorts).

      This   quarter's   performance   dunces   include  a  broadcaster   (Young
Broadcasting),  the  company  that made baking soda  products  famous  (Church &
Dwight) and a race track operator (Dover Downs Entertainment).

      In general,  our technology and  telecommunications  holdings posted solid
gains, while cyclical companies under-performed.  We expect the latter to regain
momentum when investors  realize that cyclical  company  earnings will likely be
better than  expected  and rock bottom  valuations  begin  attracting  small cap
bargain hunters.

                                        4

<PAGE>

LET'S TALK STOCKS

      The  following  are stock  specifics  on  selected  holdings  of our Fund.
Favorable  earnings  prospects do not  necessarily  translate  into higher stock
prices,  but they do express a positive  trend that we believe will develop over
time.

CARTER-WALLACE  INC.  (CAR -  $18.75  -  NYSE),  founded  in 1880 as the  Carter
Medicine  Company  marketing a single  product called Carter Little Liver Pills,
now  manufactures  and sells a diversified line of consumer health care products
including toiletries, pharmaceuticals, diagnostic specialties, proprietary drugs
and pet supplies.  Such brands as Arrid  deodorant,  Nair hair remover and Pearl
Drops  toothpaste are  Carter-Wallace  products.  The company also sells certain
products exclusively in international markets.

CELESTIAL SEASONINGS INC. (CTEA - $34.375 - NASDAQ), based in Boulder, Colorado,
developed  and  popularized  the herb tea  category in the U.S. as a  flavorful,
non-caffeinated  alternative to other hot beverages.  With over 60 tea varieties
under the Celestial  Seasonings brand, CTEA is the largest  manufacturer of herb
teas,  with an estimated 50% market  share.  The company is expected to maintain
its  dominant  share in the herb tea market and is  positioned  to leverage  its
strong brand name into dietary herbal  supplements,  green tea and wellness tea.
The Hain Food Group (HAIN - $28.3125 - Nasdaq),  the leading natural and organic
food  company,  and  Celestial  Seasonings  have  announced  the  signing  of  a
definitive  agreement  to combine  their  operations.  The name of the  combined
company will be The Hain Celestial Group Inc.

CLARCOR  INC.  (CLC  -  $17.75  -  NYSE),  founded  in  1904,  is  a  U.S.-based
manufacturer    and    marketer   of    engine-mobile    filtration    products,
industrial/environmental  filtration  products and consumer packaging  products.
CLARCOR  markets a full line of oil,  air,  fuel,  coolant and  hydraulic  fluid
filters that are used in a wide variety of applications,  including  engines and
industrial equipment.  The company markets commercial and industrial air filters
and systems,  electrostatic  contamination control equipment,  and electrostatic
high  precision  spraying   equipment.   The  air  filters  and  systems  remove
contaminants  from  recirculated  indoor  air and  from  processed  air  that is
exhausted  outdoors.   Metal,   plastic,   and  paper  containers,   combination
metal/plastic  containers,  and plastic closures manufactured by the company are
used in  packaging a wide variety of dry and paste form  products,  such as food
specialties,   beverages  and  juices,  cosmetics  and  toiletries,   drugs  and
pharmaceuticals  and chemical  specialties.  Last  September,  CLARCOR agreed to
purchase  three  filtration   businesses,   including   Purolator  Products  Air
Filtration Company, for approximately $136 million.

MARK IV INDUSTRIES INC. (IV - $22.0625 - NYSE) is a diversified  manufacturer of
a broad range of  proprietary  and other power and fluid  transfer  products and
systems that serve  primarily  industrial  and automotive  markets.  The company
classifies  its  operations  into  two  business  segments.  Mark IV  Industrial
includes the design,  manufacture and distribution of power and fluid management
systems and components for industrial original equipment  manufacturers  ("OEM")
and  distribution  markets  worldwide.  Mark IV Automotive  includes the design,
manufacture and distribution of power transmission, fuel, and fluid

                                        5

<PAGE>

handling  systems and components,  and filters and filtration  systems,  for the
global automotive aftermarket and OEM market.

PIONEER  GROUP INC.  (PIOG - $23.25 - NASDAQ) is divided  among three  strategic
business units: Pioneer Investment Management,  Pioneer International  Financial
Services and Pioneer Global Investments.  Pioneer Investment  Management acts as
investment manager to the company's 24 open-end registered  investment companies
and one closed-end registered investment company based in the U.S. The company's
International  Financial Services  businesses include investment  management and
financial services operations. Pioneer Global Investments includes the company's
diversified  businesses of gold mining,  timber,  international venture capital,
real estate and mineral exploration.

SYBRON CHEMICALS INC. (SYC - $14.125 - AMEX),  headquartered in Birmingham,  New
Jersey, is an international  specialty chemical company that develops,  produces
and markets specialty chemicals.  Sybron operates in three main market segments:
textile  preparation,  dyeing,  printing,  finishing,  and  garment  processing;
environmental  (primarily  related to water and waste treatment);  and specialty
polymer intermediates for coatings, adhesives and molded products.

WYNN'S  INTERNATIONAL  INC.  (WN -  $13.8125  - NYSE),  founded  in  1939,  is a
worldwide  supplier  of  automotive  and  industrial  components  and  specialty
chemical products.  The Automotive and Industrial  Components  Division includes
Wynn's-Precision Inc. and the Goshen Rubber Companies Inc., acquired on December
17, 1999.  These two  companies are leaders in sealing  products and  technology
serving more than 1,000  customers in 14  industrial  markets  around the world.
Robert  Skeels &  Company  is a  regional  wholesale  distributor  of  builders'
hardware  products.  The Specialty  Chemicals  Division is comprised of Wynn Oil
Company and its subsidiaries, a worldwide manufacturer and marketer of specialty
chemicals,  equipment and related programs for automotive and industrial markets
in over 100 countries.

MINIMUM INITIAL INVESTMENT - $1,000

      The Fund's  minimum  initial  investment  for both regular and  retirement
accounts is $1,000.  There are no  subsequent  investment  minimums.  No initial
minimum  is  required  for those  establishing  an  Automatic  Investment  Plan.
Additionally,  The  Gabelli  Small Cap Growth Fund and other  Gabelli  Funds are
available  through  the  no-transaction  fee  programs  at many  major  discount
brokerage firms.

INTERNET

      You   can   now   visit   us  on  the   Internet.   Our   home   page   at
http://www.gabelli.com contains information about Gabelli Asset Management Inc.,
the Gabelli Mutual Funds, IRAs, 401(k)s,  quarterly reports,  closing prices and
other current news. You can send us e-mail at [email protected].

                                        6

<PAGE>

IN CONCLUSION

      Small cap stocks  have taken a back seat to the large cap market  darlings
for nearly five years.  Over the last two quarters this has changed,  with small
caps taking over market leadership. We believe this is long overdue. Despite the
small cap rally,  with the notable  exception of the rather  richly priced small
technology  companies,  valuations remain quite reasonable relative to favorable
earnings  growth rates.  If the broad market  encounters  serious trouble in the
year ahead,  small cap stocks are  unlikely  to escape  unscathed.  However,  we
believe small caps have much stronger investor support than in recent years, and
are capable of holding up well  relative to other  capitalization  sectors in an
adverse market environment.

      Finally,  the small cap arena  continues  to favor  research  driven stock
pickers. In our research endeavors,  we are often one of just a few institutions
interested in the companies we are meeting with. In some  instances,  we are the
only firm giving any research  attention to a great little  company.  If you get
there  first  and do your  homework,  you  can  uncover  outstanding  investment
opportunities that can shine in good markets and bad.

      The Fund's daily net asset value is available in the  financial  press and
each   evening   after  6:00  PM   (Eastern   Time)  by  calling   1-800-GABELLI
(1-800-422-3554).  The Fund's Nasdaq symbol is GABSX.  Please call us during the
business day for further information.

                                   Sincerely,

                                   /S/ MARIO J.GABELLI

                                   MARIO J. GABELLI, CFA
                                   Portfolio Manager and
                                   Chief Investment Officer

April 14, 2000

- --------------------------------------------------------------------------------
                                TOP TEN HOLDINGS
                                 MARCH 31, 2000
                                 --------------
            Oak Technology Inc.           Pioneer Group Inc.
            TV Guide Inc.                 USA Networks Inc.
            United Television Inc.        Carter-Wallace Inc.
            UnitedGlobalCom Inc.          Celestial Seasonings Inc.
            Liberty Corp.                 CLARCOR Inc.
- --------------------------------------------------------------------------------

NOTE: The views expressed in this report reflect those of the portfolio  manager
only through the end of the period stated in this report.  The  manager's  views
are subject to change at any time based on market and other conditions.

                                        7

<PAGE>

THE GABELLI SMALL CAP GROWTH FUND
PORTFOLIO OF INVESTMENTS -- MARCH 31, 2000 (UNAUDITED)
- --------------------------------------------------------------------------------

                                                                  MARKET
     SHARES                                        COST           VALUE
     ------                                        ----           ------

              COMMON STOCKS -- 96.4%
              AEROSPACE -- 1.0%
    167,100   Howmet International Inc.+ ...    $ 3,294,239   $   3,373,331
                                               ------------    ------------
              AGRICULTURE -- 0.0%
      7,500   Cadiz Inc.+ ..................         76,434          63,750
      5,000   Sylvan Inc. ..................         49,669          38,750
                                               ------------    ------------
                                                    126,103         102,500
                                               ------------    ------------
              AUTOMOTIVE: PARTS AND ACCESSORIES -- 4.7%
    100,000   Acktion Co.+ .................      1,273,170         818,995
     12,000   Borg-Warner
               Automotive Inc. .............        473,912         472,500
    205,000   GenCorp Inc. .................      1,956,379       1,588,750
      8,000   Lund International
               Holdings Inc.+ ..............         89,730          38,500
     22,000   Meritor Automotive Inc. ......        514,844         347,875
     30,000   Midas Inc. ...................        651,993         720,000
    125,000   Modine Manufacturing Co. .....      3,625,956       3,140,625
      5,250   Monro Muffler Brake Inc.+ ....         52,860          43,641
    190,000   Scheib (Earl) Inc.+ ..........      1,301,170         712,500
    151,000   Standard Motor
               Products Inc. ...............      2,457,169       2,246,125
     17,000   Strattec Security Corp.+ .....        427,208         584,375
     54,000   Superior Industries
               International Inc. ..........      1,448,049       1,711,125
    125,000   TransPro Inc. ................      1,254,392         625,000
    200,000   Wynn's International Inc. ....      1,294,233       2,762,500
                                               ------------    ------------
                                                 16,821,065      15,812,511
                                               ------------    ------------
              AVIATION: PARTS AND SERVICES -- 2.5%
     15,000   AAR Corp. ....................        198,875         250,312
     45,000   Aviall Inc.+ .................        545,020         379,687
     18,300   Barnes Group Inc. ............        363,565         265,350
     56,000   Curtiss-Wright Corp. .........      1,008,638       2,051,000
      7,500   Ducommun Inc. ................         80,125          68,906
    120,000   Fairchild Corp., Cl. A+ ......      2,108,670         817,500
     26,500   Hi-Shear Industries Inc. .....         58,141          66,250
    300,000   Kaman Corp., Cl. A ...........      5,429,465       2,925,000
     80,000   Moog Inc., Cl. A+ ............      1,630,172       1,470,000
                                               ------------    ------------
                                                 11,422,671       8,294,005
                                               ------------    ------------
              BROADCASTING -- 7.3%
    195,000   Ackerley Group Inc. ..........      2,869,412       2,949,375
      1,500   Acme Communications Inc.+ ....         46,437          34,312
    244,900   Granite Broadcasting Corp.+ ..      2,570,284       1,744,912
     35,000   Gray Communications
               Systems Inc. ................        538,963         415,625
     50,000   Gray Communications
               Systems Inc., Cl. B .........        664,282         587,500
     54,500   Hearst-Argyle
               Television Inc.+ ............        486,898       1,273,937


                                                                  MARKET
     SHARES                                        COST           VALUE
     ------                                        ----           ------

    167,000   Liberty Corp. ................   $  5,392,917     $ 6,262,500
      5,500   On Command Corp. .............         95,922          82,500
    200,000   Paxson Communications
               Corp., Cl. A+ ...............      2,091,730       1,550,000
    100,000   Price Communications
               Corp.+ ......................      1,049,317       2,300,000
     38,000   Salem Communications
               Corp., Cl. A+ ...............        869,017         453,625
     10,000   Sinclair Broadcast
               Group Inc.+ .................        102,000          89,375
      2,000   Spanish Broadcasting
               System Inc., Cl. A+ .........         40,000          46,906
      1,500   TiVo Inc.+ ...................         24,000          51,937
     48,500   United Television Inc. .......      1,139,765       6,420,187
      1,500   Wink Communications Inc.+ ....         24,000          50,062
     15,000   Young Broadcasting
               Inc., Cl. A+ ................        530,708         285,000
                                               ------------    ------------
                                                 18,535,652      24,597,753
                                               ------------    ------------
              BUILDING AND CONSTRUCTION -- 1.1%
     14,000   Florida Rock Industries Inc. .        231,942         392,000
     14,444   Huttig Building
               Products Inc.+ ..............         38,176          64,998
     94,000   Nortek Inc.+ .................      1,354,925       2,079,750
     75,000   Republic Group Inc. ..........        427,064         806,250
     22,000   Universal Forest
               Products Inc. ...............        286,625         272,250
                                               ------------    ------------
                                                  2,338,732       3,615,248
                                               ------------    ------------
              BUSINESS SERVICES -- 3.1%
     70,000   Berlitz International Inc.+ ..      1,241,773         800,625
     40,000   Burns International
               Services Corp. ..............        515,826         420,000
    610,400   Career Blazers Inc. ..........        236,019         396,760
      6,000   Carlisle Holdings Ltd.+ ......         30,250          46,875
      1,500   CheckFree Holdings Corp.+ ....         13,560         105,750
     20,000   Data Broadcasting Corp.+ .....        114,002         152,500
      3,000   Data Transmission
               Network Corp.+ ..............         15,000          85,312
     40,000   Donnelley (R.H.) Corp. .......        547,665         680,000
     24,000   Industrial Distribution
               Group Inc.+ .................        257,476          72,000
     13,000   Landauer Inc. ................        233,156         237,250
      5,000   MDC Communications
               Corp., Cl. A+ ...............         53,950          58,125
     37,500   Nashua Corp.+ ................        534,448         314,062
    109,500   National Processing Inc.+ ....        971,933       1,040,250
    105,000   Paxar Corp.+ .................      1,213,161       1,010,625
     17,000   Pittson Brink's Group ........        458,809         289,000
     12,000   Princeton Video Image Inc.+ ..         77,250          84,000
     10,000   PubliCard Inc.+ ..............        109,405          97,500
     87,000   Trans-Lux Corp. (b) ..........        734,323         587,250


                 See accompanying notes to financial statements.

                                        8

<PAGE>


THE GABELLI SMALL CAP GROWTH FUND
PORTFOLIO OF INVESTMENTS (CONTINUED) -- MARCH 31, 2000 (UNAUDITED)
- --------------------------------------------------------------------------------

                                                                  MARKET
     SHARES                                        COST           VALUE
     ------                                        ----           ------

              COMMON STOCKS (CONTINUED)
              BUSINESS SERVICES (CONTINUED)
    152,000   U.S. Foodservice+ ............   $  3,823,933    $  3,914,000
      8,000   Wachenhut Corp., Cl. A .......        118,092         111,500
      6,187   Wackenhut Corp., Cl. B .......         52,368          62,257
                                               ------------    ------------
                                                 11,352,399      10,565,641
                                               ------------    ------------
              CABLE -- 1.9%
     85,000   UnitedGlobalCom Inc.,
               Cl. A+ ......................        648,155       6,380,312
                                               ------------    ------------
              CLOSED-END FUNDS -- 1.6%
     45,000   Central European Equity
               Fund Inc. ...................        608,109         773,437
     78,000   Dresdner RCM Europe
               Fund Inc. ...................        611,900       1,368,120
     45,000   France Growth Fund Inc. ......        476,793         736,875
     32,000   Germany Fund Inc. ............        358,820         518,000
     40,000   Italy Fund Inc. ..............        354,460         770,000
     65,000   New Germany Fund Inc. ........        764,184         958,750
     11,000   Spain Fund Inc. ..............        103,029         161,562
                                               ------------    ------------
                                                  3,277,295       5,286,744
                                               ------------    ------------
              COMMUNICATIONS EQUIPMENT -- 1.0%
    110,000   Allen Telecom Inc.+ ..........      1,138,364       1,753,125
    100,000   Communications
               Systems Inc. ................        556,544       1,750,000
                                               ------------    ------------
                                                  1,694,908       3,503,125
                                               ------------    ------------
              COMPUTER SOFTWARE AND SERVICES -- 1.6%
      1,000   @Home Corp., Ser. A+ .........         10,375          32,938
      3,000   Anacomp Inc. .................         47,205          46,687
     92,500   Bull Run Corp.+ ..............        323,637         370,000
      3,000   Cylink Corp. .................         13,728          43,500
     25,000   Internet.com Corp.+ ..........        359,125       1,046,875
        200   Macromedia Inc.+ .............          2,370          18,062
     63,000   Phoenix Technologies Ltd.+ ...        455,448       1,330,875
     18,000   QuadraMed Corp.+ .............        149,193         103,500
    430,000   Tyler Technologies Inc. ......      1,754,305       2,553,125
                                               ------------    ------------
                                                  3,115,386       5,545,562
                                               ------------    ------------
              CONSUMER PRODUCTS -- 4.4%
      3,000   Action Performance
               Companies Inc.+ .............         86,846          39,937
     22,000   Adams Golf Inc.+ .............        107,620          36,437
     30,000   Ashworth Inc.+ ...............        128,906         129,375
    275,000   Carter-Wallace Inc. ..........      4,124,376       5,156,250
     45,000   Church & Dwight Co. Inc. .....        459,562         773,437
     12,000   Coachmen Industries Inc. .....         80,758         165,750



                                                                  MARKET
     SHARES                                        COST           VALUE
     ------                                        ----           ------

      3,000   Department 56 Inc.+ ..........   $     67,175    $     44,437
      8,000   French Fragrances Inc.+ ......         78,490          63,000
    139,000   General Cigar Holdings Inc.+ .      1,494,875       2,102,375
    133,500   General Cigar Holdings Inc.,
               Cl. B+ (a) ..................      1,076,798       2,010,844
     60,000   Genlyte Group Inc.+ ..........        229,060       1,170,000
      2,000   Harley-Davidson Inc. .........          9,425         158,750
    115,000   Hartmarx Corp.+ ..............        716,013         316,250
     10,000   Madden (Steven) Ltd. .........         86,785         190,000
     29,000   National Presto
               Industries Inc. .............      1,195,961         946,125
     13,000   Nature's Sunshine
               Products Inc. ...............        255,865         104,000
      3,000   Scotts Co., Cl. A+ ...........         46,027         126,000
      8,000   Skyline Corp. ................        142,678         173,500
     14,000   Stewart Enterprises Inc., Cl. A        65,467          69,125
    120,000   Weider Nutrition
                International Inc. .........        788,886         427,500
     70,000   Wolverine World Wide Inc. ....        834,021         770,000
                                               ------------    ------------
                                                 12,075,594      14,973,092
                                               ------------    ------------
              CONSUMER SERVICES -- 1.0%
     30,000   Bowlin Outdoor Advertising &
               Travel Centers Inc.+ ........        150,843         155,625
      6,000   Collectors Universe Inc. .....         42,437          39,000
     40,000   Loewen Group Inc. ............         60,400          28,000
      1,000   Martha Stewart Living
               Inc., Cl. A+ ................         18,000          27,000
     50,000   Ogden Corp ...................        676,001         596,875
     20,000   Response USA Inc.+ ...........         78,080          21,250
    162,000   Rollins Inc. .................      3,206,884       2,409,750
                                               ------------    ------------
                                                  4,232,645       3,277,500
                                               ------------    ------------
              DIVERSIFIED INDUSTRIAL -- 5.4%
     99,500   Ampco-Pittsburgh Corp. .......        966,406       1,082,062
      8,000   Anixter International Inc.+ ..         76,160         223,000
     65,000   Crane Co. ....................        774,600       1,531,562
     61,000   Gardner Denver
               Machinery Corp.+ ............        512,638       1,147,562
     15,000   GATX Corp. ...................        605,000         570,000
     94,000   GenTek Inc. ..................      1,033,512       1,316,000
     39,000   Katy Industries Inc. .........        519,481         358,312
    455,000   Lamson & Sessions Co.+ .......      2,606,587       3,384,062
     75,000   Lindsay Manufacturing Co. ....        725,857       1,284,375
     60,000   MagneTek Inc. ................        576,807         547,500
      1,000   Matthews International
               Corp., Cl. A ................         24,312          22,625
     25,000   Myers Industries Inc. ........        467,583         300,000
    610,400   Noel Group Inc.+ .............        222,822         301,421


                 See accompanying notes to financial statements.

                                        9

<PAGE>


THE GABELLI SMALL CAP GROWTH FUND
PORTFOLIO OF INVESTMENTS (CONTINUED) -- MARCH 31, 2000 (UNAUDITED)
- --------------------------------------------------------------------------------

                                                                  MARKET
     SHARES                                        COST           VALUE
     ------                                        ----           ------

              COMMON STOCKS (CONTINUED)
              DIVERSIFIED INDUSTRIAL  (CONTINUED)
     40,000   Oil-Dri Corporation of America   $    553,600    $    302,500
    130,000   Park-Ohio Holdings Corp.+ ....      1,786,262       1,381,250
     22,000   Standex International Corp. ..        625,875         341,000
      2,000   Tech/Ops Sevcon Inc. .........         21,913          19,750
    190,000   Thomas Industries Inc. .......      1,683,550       3,562,500
     60,000   WHX Corp.+ ...................        690,469         412,500
                                               ------------    ------------
                                                 14,473,434      18,087,981
                                               ------------    ------------
              EDUCATIONAL SERVICES -- 0.0%
     22,000   Whitman Education
               Group Inc.+ .................        109,868          49,500
                                               ------------    ------------
              ELECTRONICS -- 3.8%
    670,001   Oak Technology Inc.+ .........      3,140,121      12,897,510
                                               ------------    ------------
              ENERGY AND UTILITIES -- 4.4%
     40,000   AGL Resources Inc. ...........        746,290         735,000
      6,000   Basin Exploration Inc.+ ......         93,115          89,625
      4,000   Birmingham Utilities Inc. ....         82,594          60,125
     20,000   CH Energy Group Inc. .........        867,400         607,500
     10,000   Chesapeake Utilities Corp. ...        187,062         169,375
      5,000   Connecticut Water
               Service Inc. ................        148,553         141,875
     25,000   E'Town Corp. .................      1,373,702       1,581,250
     25,000   Eastern Enterprises ..........      1,083,108       1,496,875
     10,000   Fall River Gas Co. ...........        185,325         215,000
     42,000   Florida Public Utilities Co. .        655,350         551,250
    130,000   Kaneb Services Inc.+ .........        436,625         715,000
     15,000   Petroleum Geo-Services ASA+ ..        239,369         259,688
    300,000   RPC Inc. .....................      1,200,731       2,831,250
      6,000   SJW Corp .....................        692,727         702,000
    110,000   Southwest Gas Corp. ..........      1,915,596       2,096,875
     15,000   Tesoro Petroleum Corp. .......        209,500         172,500
      5,000   TransMontaigne Oil Co. .......         71,188          34,063
     49,000   United Water Resources Inc. ..      1,062,895       1,702,750
     40,000   Waterlink Inc. ...............        109,000         110,000
     15,000   WICOR Inc. ...................        345,521         465,000
                                               ------------    ------------
                                                 11,705,651      14,737,001
                                               ------------    ------------
              ENTERTAINMENT -- 5.8%
     15,000   Dover Downs
               Entertainment Inc.+ .........        201,863         191,250
     45,000   Fisher Companies Inc. ........      2,918,370       2,812,500
     50,000   GC Companies Inc.+ ...........      2,057,500       1,737,500
      2,500   International Speedway Corp. .         45,000         112,500
     10,000   Liberty Digital Inc.+ ........         43,671         385,000


                                                                  MARKET
     SHARES                                        COST           VALUE
     ------                                        ----           ------

      9,656   Liberty Media Group, Cl. A+ ..    $   148,014    $    572,118
      2,000   Loews Cineplex
               Entertainment Corp.+ ........         24,350           7,000
      3,000   Metromedia International
               Group Inc.+ .................         26,925          16,875
     45,000   Topps Co. Inc.+ ..............        213,634         374,063
    170,000   TV Guide Inc., Cl. A+ ........      1,284,657       8,170,625
    230,000   USA Networks Inc.+ ...........      1,966,179       5,189,375
      1,500   World Wrestling Federation ...
               Entertainment Inc.+ .........         24,250          26,602
                                               ------------    ------------
                                                  8,954,413      19,595,408
                                               ------------    ------------
              EQUIPMENT AND SUPPLIES -- 13.5%
     14,000   Alltrista Corp.+ .............        262,292         316,750
    145,000   AMETEK Inc. ..................      1,658,858       2,791,250
     15,000   Amphenol Corp., Cl. A+ .......        511,537       1,533,750
    320,000   Baldwin Technology Co.
               Inc., Cl. A+ ................      1,529,709         620,000
     55,000   Belden Inc. ..................        937,120       1,512,500
      6,000   Bway Corp.+ ..................         82,444          45,750
      8,000   C&D Technologies Inc. ........        199,232         472,000
    100,000   CIRCOR International Inc.+ ...      1,058,034       1,331,250
    260,000   CLARCOR Inc. .................      3,021,973       4,615,000
      5,000   Commercial Intertech Corp. ...         66,438          98,438
     65,000   Core Materials Corp. .........        210,581         105,625
     15,000   CTS Corp. ....................         30,540         855,000
     76,000   Cuno Inc.+ ...................      1,269,606       2,061,500
      9,000   Danaher Corp. ................        303,554         459,000
    257,600   Fedders Corp. ................      1,536,999       1,432,900
    125,000   Flowserve Corp. ..............      2,442,422       1,609,375
     54,800   Franklin Electric Co. ........      1,687,631       3,500,350
     40,000   General Magnaplate Corp. .....         83,763         117,500
     70,000   Gerber Scientific Inc. .......        955,212       1,351,875
     17,775   Gorman-Rupp Co. ..............        276,467         279,956
     17,000   Graco Inc. ...................        433,361         493,000
    145,000   Hussmann International Inc. ..      1,990,678       1,839,688
     47,000   IDEX Corp. ...................        438,725       1,280,750
     32,000   Johnston Industries Inc. .....        254,514          88,000
     10,000   K-Tron International Inc.+ ...         74,933         161,250
    116,000   Kollmorgen Corp. .............      1,335,247       1,595,000
     10,000   Littelfuse Inc.+ .............         68,313         366,875
     22,000   Lufkin Industries Inc. .......        389,520         319,000
    130,000   Mark IV Industries Inc. ......      2,537,107       2,868,125
     20,000   Met-Pro Corp. ................        262,406         182,500
      2,000   Plantronics Inc.+ ............         15,396         186,375
     39,000   Raytech Corp.+ ...............        166,300         148,688
     10,000   Robbins & Myers Inc. .........         98,665         236,250
     30,000   Roper Industries Inc. ........        220,050       1,018,125
      3,500   Sames Corp. ..................         61,294          49,438


                 See accompanying notes to financial statements.

                                        10

<PAGE>


THE GABELLI SMALL CAP GROWTH FUND
PORTFOLIO OF INVESTMENTS (CONTINUED) -- MARCH 31, 2000 (UNAUDITED)
- --------------------------------------------------------------------------------

                                                                  MARKET
     SHARES                                        COST           VALUE
     ------                                        ----           ------

              COMMON STOCKS (CONTINUED)
              EQUIPMENT AND SUPPLIES (CONTINUED)
     40,000   Sequa Corp., Cl. A+ ..........   $  1,477,615    $  1,585,000
     13,500   Sequa Corp., Cl. B+ ..........        879,802         637,875
     60,000   SL Industries Inc. ...........        792,587         555,000
      1,000   Smith (A.O.) Corp. ...........         16,550          18,000
      9,000   Smith (A.O.) Corp., Cl. A ....        249,550         162,000
     74,000   SPS Technologies Inc.+ .......      2,273,458       2,257,000
      5,000   Teleflex Inc. ................         76,167         177,500
     15,000   Tennant Co. ..................        392,120         465,000
    150,000   UCAR International Inc.+ .....      3,008,468       1,978,125
      5,000   Valmont Industries Inc. ......         40,625          86,250
      7,875   Watsco Inc., Cl. B ...........         23,627          81,703
    145,000   Watts Industries Inc., Cl. A .      1,927,307       1,794,375
                                               ------------    ------------
                                                 37,628,797      45,740,661
                                               ------------    ------------
              FINANCIAL SERVICES -- 3.9%
     32,000   Argonaut Group Inc. ..........        776,779         642,000
     25,001   Baker, Fentress & Co. ........        668,298         301,571
     68,000   Berliner Bank Aktienge-
               sellschaft ..................      1,408,705       1,113,439
     45,000   Danielson Holding Corp.+ .....        165,200         286,875
     20,000   Duff & Phelps Credit
               Rating Co. ..................      1,987,250       1,993,750
      3,000   Federal Agricultural
               Mortgage Corp., Cl. C+ ......         24,000          46,500
     45,000   Gainsco Inc. .................        291,025         264,375
     18,000   Hibernia Corp., Cl. A ........        140,063         189,000
      3,000   LandAmerica Financial Group ..         41,015          58,125
     15,000   Metris Companies Inc. ........        211,831         583,125
    104,100   Midland Co. ..................      1,487,050       2,446,350
      1,500   Net.B@nk Inc.+ ...............          6,000          19,500
    230,000   Pioneer Group Inc.+ ..........      4,290,873       5,347,500
                                               ------------    ------------
                                                 11,498,089      13,292,110
                                               ------------    ------------
              FOOD AND BEVERAGE -- 3.3%
     12,000   Advantica Restaurant
               Group Inc.+ .................        124,643          18,000
     22,000   Ben & Jerry's
               Homemade Inc., Cl. A+ .......        591,825         738,375
     34,863   Buenos Aires
               Embotelladora SA (a) ........              0               0
    150,000   Celestial Seasonings Inc.+ ...      1,892,961       5,156,250
      6,000   Cheesecake Factory Inc.+ .....         65,061         249,750
      1,700   Farmer Brothers Co. ..........        248,299         304,300
     20,000   Genesee Corp., Cl. B .........        765,067         420,000
     10,000   International Multifoods
               Corp. .......................        199,921         133,750
     23,000   J & J Snack Foods Corp.+ .....        329,207         457,125
     10,000   Midwest Grain Products Inc. ..        160,371          63,750


                                                                  MARKET
     SHARES                                        COST           VALUE
     ------                                        ----           ------

      4,000   Mondavi (Robert) Corp.+ ......   $    137,188    $    139,500
      1,000   Northland Cranberries Inc.,
               Cl. A .......................          7,625           5,438
      2,000   Omni Nutraceuticals Inc ......         11,500          14,000
    130,000   PepsiAmericas Inc.+ ..........        760,178         438,750
     50,000   Ralcorp Holdings Inc.+ .......        727,509         725,000
     32,608   Tootsie Roll Industries Inc. .        556,724       1,027,144
    100,000   Twinlab Corp.+ ...............      1,486,745         712,500
     48,000   Whitman Corp. ................        740,400         669,000
                                               ------------    ------------
                                                  8,805,224      11,272,632
                                               ------------    ------------
              HEALTH CARE -- 2.6%
     10,000   Block Drug Co. Inc., Cl. A ...        312,870         275,625
     21,500   Del Global
               Technologies Corp.+ .........        189,088         182,750
     92,000   Inamed Corp.+ ................      2,368,907       4,554,000
     20,000   IVAX Corp.+ ..................        119,838         545,000
     25,300   Life Technologies Inc. .......      1,039,874       1,265,000
     10,000   Nabi+ ........................         70,938          67,500
     48,000   Penwest Pharmaceuticals Co. ..        327,279         591,000
     80,000   Rexall Sundown Inc.+ .........      1,063,437       1,130,000
      3,620   U.S. Physical Therapy Inc.+ ..         22,625          33,938
     40,000   Women First Health
               Care Inc.+ ..................        290,375         190,000
                                               ------------    ------------
                                                  5,805,231       8,834,813
                                               ------------    ------------
              HOME FURNISHINGS -- 0.8%
      7,000   Bassett Furniture
               Industries Inc. .............        164,478          98,000
      2,000   Bed Bath & Beyond Inc.+ ......         11,125          78,750
    187,550   Carlyle Industries Inc.+ .....         78,647         143,593
     17,000   Foamex International Inc. ....        145,935         160,438
     30,000   La-Z-Boy Chair Co. ...........        218,125         461,250
     50,000   Mikasa Inc. ..................        698,044         371,875
     70,000   Oneida Ltd. ..................        732,976       1,356,250
                                               ------------    ------------
                                                  2,049,330       2,670,156
                                               ------------    ------------
              HOTELS AND GAMING -- 4.7%
    440,000   Aztar Corp.+ .................      2,988,411       4,180,000
    115,000   Boca Resorts Inc., Cl. A+ ....      1,532,876         984,688
     15,000   Boyd Gaming Corp.+ ...........        132,500          74,063
     60,000   Bristol Hotels &
               Resorts Inc.+ ...............        565,500         570,000
     20,000   Churchill Downs Inc. .........        416,463         527,500
     55,000   Extended Stay America Inc.+ ..        629,984         412,500
     96,000   Gaylord Entertainment Co. ....      2,894,603       2,604,000
    200,000   Jackpot Enterprises Inc. .....      2,155,619       3,325,000
      5,000   Jurys Hotel Group plc ........         27,762          33,275
     30,000   Lakes Gaming Inc.+ ...........        433,680         238,125
     69,000   Mirage Resorts Inc.+ .........        614,568       1,336,875


                 See accompanying notes to financial statements.

                                       11

<PAGE>


THE GABELLI SMALL CAP GROWTH FUND
PORTFOLIO OF INVESTMENTS (CONTINUED) -- MARCH 31, 2000 (UNAUDITED)
- --------------------------------------------------------------------------------

                                                                  MARKET
     SHARES                                        COST           VALUE
     ------                                        ----           ------

              COMMON STOCKS (CONTINUED)
              HOTELS AND GAMING (CONTINUED)
     90,000   Park Place Entertainment Corp.+  $    840,196    $  1,040,625
     25,000   Penn National Gaming Inc.+ ...        248,260         277,734
      2,000   Station Casinos Inc.+ ........         13,350          43,625
     90,000   Trump Hotels & Casino
               Resorts Inc.+ ...............        838,114         286,875
      6,000   Youbet.com Inc.+ .............         33,000          26,250
                                               ------------    ------------
                                                 14,364,886      15,961,135
                                               ------------    ------------
              METALS AND MINING -- 0.6%
    250,000   Echo Bay Mines Ltd.+ .........        935,414         328,125
    190,000   Royal Oak Mines Inc.+ ........        322,487           1,900
     28,000   Stillwater Mining Co.+ .......        379,317       1,120,000
      5,000   Toreador Royalty Corp.+ ......         19,063          27,500
    545,000   TVX Gold Inc.+ ...............        925,628         408,750
                                               ------------    ------------
                                                  2,581,909       1,886,275
                                               ------------    ------------
              PAPER AND FOREST PRODUCTS -- 1.3%
    133,000   Greif Bros. Corp., Cl. A .....      2,614,791       4,239,375
                                               ------------    ------------
              PUBLISHING -- 4.3%
    121,278   Independent News &
               Media plc, Dublin ...........        380,260       1,190,330
     10,000   Lee Enterprises Inc. .........        239,924         261,250
     40,000   McClatchy Newspapers
               Inc., Cl. A .................        943,061       1,310,000
     62,000   Media General Inc., Cl. A ....      1,449,118       3,247,250
     23,000   Meredith Corp. ...............        329,933         636,813
    170,000   Penton Media Inc. ............      1,975,204       4,420,000
     45,000   Pulitzer Inc. ................        737,211       1,839,375
    200,000   Thomas Nelson Inc. ...........      2,260,295       1,587,500
     12,000   Wiley (John) & Sons Inc., Cl. B        46,500         205,500
                                               ------------    ------------
                                                  8,361,506      14,698,018
                                               ------------    ------------
              REAL ESTATE -- 1.2%
    160,000   Catellus Development Corp.+ ..      1,884,085       2,220,000
    118,000   Griffin Land & Nurseries Inc.+      1,471,129       1,298,000
      9,000   Gyrodyne Company of
               America Inc.+ ...............        154,268         189,000
    160,000   Meditrust Companies ..........        423,436         290,000
                                               ------------    ------------
                                                  3,932,918       3,997,000
                                               ------------    ------------
              RETAIL -- 3.1%
     60,000   Aaron Rents Inc. .............        461,298         903,750
     46,000   Aaron Rents Inc., Cl. A ......        211,041         787,750
      5,000   Borders Group Inc.+ ..........         98,063          85,938
    105,000   Burlington Coat Factory
               Warehouse Corp. .............      1,120,021       1,804,688



                                                                  MARKET
     SHARES                                        COST           VALUE
     ------                                        ----           ------

     25,000   Coldwater Creek Inc.+ ........   $    488,166    $    425,000
      8,000   Gerald Stevens Inc.+ .........         96,000          64,000
    120,000   Ingles Markets Inc., Cl. A ...      1,532,344       1,252,500
    210,000   Lillian Vernon Corp. .........      3,383,836       1,995,000
     95,000   Neiman Marcus Group Inc.+ ....      1,272,266       2,642,188
    120,000   Sports Authority Inc.+ .......        914,969         307,500
      3,000   Weis Markets Inc. ............        117,431         102,000
                                               ------------    ------------
                                                  9,695,435      10,370,314
                                               ------------    ------------
              SATELLITE -- 0.5%
      4,000   Pegasus Communications
               Corp.+ ......................         70,830         563,000
     60,000   TCI Satellite Entertainment
               Inc., Cl. A+ ................        279,251       1,147,500
                                               ------------    ------------
                                                    350,081       1,710,500
                                               ------------    ------------
              SPECIALTY CHEMICALS -- 2.9%
     35,000   Airgas Inc. ..................        454,837         290,938
     80,000   Bush Boake Allen Inc.+ .......      2,091,543       2,225,000
     45,000   Dexter Corp. .................      1,526,224       2,385,000
    116,000   Ferro Corp. ..................      2,238,674       2,066,250
      2,000   Fuller (H.B.) Co. ............         78,102          79,875
     70,000   General Chemical Group Inc. ..        270,982         148,750
        600   MacDermid Inc. ...............          2,200          15,900
    115,000   Material Sciences Corp.+ .....      1,100,827       1,552,500
     68,000   Omnova Solutions Inc. ........        487,904         382,500
     35,000   Penford Corp .................        332,776         634,375
     11,000   Sybron Chemicals Inc.+ .......        180,613         155,375
                                               ------------    ------------
                                                  8,764,682       9,936,463
                                               ------------    ------------
              TELECOMMUNICATIONS -- 2.8%
     23,000   ARC International Corp. ......        125,555          17,250
      9,200   Atlantic Tele-Network Inc. ...         92,644         109,250
     79,000   Citizens Utilities Co., Cl. B+        751,755       1,293,625
     47,300   Commonwealth Telephone
               Enterprises Inc.+ ...........        875,751       2,220,144
     20,000   Commonwealth Telephone
               Enterprises Inc., Cl. B+ ....        140,936         930,000
     49,500   CoreComm Ltd.+ ...............        148,225       2,178,000
     60,000   GST Telecommunications
               Inc.+ .......................        681,753         367,500
      6,000   RCN Corp.+ ...................         26,817         323,250
     32,000   Rogers Communications Inc.,
               Cl. B, ADR+ .................        270,228         954,000
     20,000   Viatel Inc.+ .................        247,945       1,003,750
                                               ------------    ------------
                                                  3,361,609       9,396,769
                                               ------------    ------------
              TRANSPORTATION -- 0.1%
      2,000   Irish Continental Group plc ..         18,258          22,981
     50,000   OMI Corp. ....................        313,120         190,625
                                               ------------    ------------
                                                    331,378         213,606
                                               ------------    ------------


                 See accompanying notes to financial statements.

                                        12

<PAGE>


THE GABELLI SMALL CAP GROWTH FUND
PORTFOLIO OF INVESTMENTS (CONTINUED) -- MARCH 31, 2000 (UNAUDITED)
- --------------------------------------------------------------------------------

                                                                  MARKET
     SHARES                                        COST           VALUE
     ------                                        ----           ------

              COMMON STOCKS (CONTINUED)
              WIRELESS COMMUNICATIONS -- 0.2%
      3,000   Centennial Cellular
               Corp., Cl. A+ ...............   $     11,042    $     72,938
      1,500   Rural Cellular Corp., Cl. A+ .         20,310         101,344
      7,000   Teligent Inc., Cl. A .........        150,500         467,688
        100   Tritel Inc., Cl. A+ ..........          1,800           3,825
        500   Western Wireless Corp., Cl. A+          5,249          22,906
                                               ------------    ------------
                                                    188,901         668,701
                                               ------------    ------------
              TOTAL COMMON STOCKS ..........    247,653,098     325,583,252
                                               ------------    ------------

              PREFERRED STOCKS -- 0.4%
              DIVERSIFIED INDUSTRIAL -- 0.4%
     47,000   WHX Corp.,
               $3.75 Cv. Pfd., Ser. B ......      1,316,000       1,081,000
      5,000   WHX Corp.,
               6.50% Cv. Pfd., Ser. A ......        160,000         135,000
                                               ------------    ------------
                                                  1,476,000       1,216,000
                                               ------------    ------------
              TOTAL PREFERRED STOCKS .......      1,476,000       1,216,000
                                               ------------    ------------
  PRINCIPAL
   AMOUNT
  ---------
              CONVERTIBLE BONDS -- 0.0%
              COMPUTER SOFTWARE AND SERVICES -- 0.0%
 $      500   MSC.Software Corp.,
               Sub. Deb. Cv.
               7.88%, 08/18/04 .............             75             503
                                               ------------    ------------

              U.S. GOVERNMENT OBLIGATIONS -- 1.7%
  5,810,000   U.S. Treasury Bills,
               5.35% to 6.06%++,
               due 04/06/00 to 06/08/00 ....      5,772,705       5,773,509
                                               ------------    ------------

                                                                 MARKET
                                                  COST           VALUE
                                                  ----           ------

              TOTAL
               INVESTMENTS -- 98.5% ........   $254,901,878    $332,573,264
                                               ============
              OTHER ASSETS AND
               LIABILITIES (NET) -- 1.5% ..................       5,048,037
                                                               ------------
              NET ASSETS -- 100%
               (15,182,697 shares outstanding) ............    $337,621,301
                                                               ============
- ------------------------
              For Federal tax purposes:
              Aggregate cost ..............................    $254,901,878
                                                               ============
              Gross unrealized appreciation ...............    $109,158,366
              Gross unrealized depreciation ...............     (31,486,980)
                                                               ------------
              Net unrealized appreciation .................    $ 77,671,386
                                                               ============
- ------------------------
(a)   Security fair valued under procedures established by the Board of
      Directors.
(b)   Security considered an affiliated holding because the Fund owns at least
      5% of the outstanding shares.
+     Non-income producing security.
++    Represents annualized yield at date of purchase.
ADR - American Depositary Receipt.

                 See accompanying notes to financial statements.

                                        13

<PAGE>

                        THE GABELLI SMALL CAP GROWTH FUND

STATEMENT OF ASSETS AND LIABILITIES
MARCH 31, 2000 (UNAUDITED)
- --------------------------------------------------------------------------------

ASSETS:
   Investments, at value
     (Cost $254,901,878) .................  $332,573,264
   Cash and foreign currency,
     at value ($6,900) ...................         6,456
   Dividends receivable ..................       321,750
   Receivable for investments sold .......     7,010,643
   Receivable for capital shares sold ....       166,901
                                            ------------
   TOTAL ASSETS ..........................   340,079,014
                                            ------------
LIABILITIES:
   Payable for investments purchased .....     1,899,703
   Payable for capital shares redeemed ...        37,750
   Payable for investment advisory fees ..       283,367
   Payable for distribution fees .........        70,842
   Payable for custodian fees ............        12,800
   Other accrued expenses ................       153,251
                                            ------------
   TOTAL LIABILITIES .....................     2,457,713
                                            ------------
   NET ASSETS applicable to 15,182,697
     shares outstanding ..................  $337,621,301
                                            ============
NET ASSETS CONSIST OF:
   Capital stock, at par value ...........  $     15,183
   Additional paid-in capital ............   232,082,697
   Accumulated net investment income .....       259,156
   Accumulated net realized gain
     on investments and foreign currency
     transactions ........................    27,593,331
   Net unrealized appreciation on investments
     and foreign currency transactions ...    77,670,934
                                            ------------
   TOTAL NET ASSETS ......................  $337,621,301
                                            ============
   NET ASSET VALUE, offering and redemption
     price per share ($337,621,301 / 15,182,697
     shares outstanding; unlimited number of
     shares authorized of $0.001 par value)       $22.24
                                                  ======


STATEMENT OF OPERATIONS
FOR THE SIX MONTHS ENDED MARCH 31, 2000 (UNAUDITED)
- --------------------------------------------------------------------------------

INVESTMENT INCOME:
   Dividends .............................   $ 2,362,006
   Interest ..............................       338,181
                                             -----------
   TOTAL INVESTMENT INCOME ...............     2,700,187
                                             -----------
EXPENSES:
   Investment advisory fees ..............     1,622,455
   Distribution fees .....................       405,610
   Shareholder services fees .............       221,334
   Shareholder report expenses ...........        91,605
   Custodian fees ........................        36,667
   Legal and audit fees ..................        20,726
   Directors' fees .......................        18,133
   Registration fees .....................        17,712
   Interest expense ......................           128
   Miscellaneous expenses ................         6,661
                                             -----------
   TOTAL EXPENSES ........................     2,441,031
                                             -----------
   NET INVESTMENT INCOME .................       259,156
                                             -----------
NET REALIZED AND UNREALIZED GAIN
   ON INVESTMENTS:
   Net realized gain on investments ......    31,322,490
   Net change in unrealized appreciation
     on investments and foreign currency
     transactions ........................    11,012,000
                                             -----------
   NET REALIZED AND UNREALIZED GAIN
     ON INVESTMENTS AND FOREIGN CURRENCY
     TRANSACTIONS ........................    42,334,490
                                             -----------
   NET INCREASE IN NET ASSETS RESULTING
     FROM OPERATIONS .....................   $42,593,646
                                             ===========

STATEMENT OF CHANGES IN NET ASSETS
- --------------------------------------------------------------------------------

<TABLE>
<CAPTION>
                                                                                SIX MONTHS ENDED
                                                                                 MARCH 31, 2000        YEAR ENDED
                                                                                  (UNAUDITED)      SEPTEMBER 30, 1999
                                                                                 ------------         ------------
<S>                                                                              <C>                  <C>
OPERATIONS:
  Net investment income (loss) ..............................................    $    259,156         $ (1,018,942)
  Net realized gain on investments and foreign currency transactions ........      31,322,490           32,777,593
  Net change in unrealized appreciation on investments
    and foreign currency transactions .......................................      11,012,000           19,961,942
                                                                                 ------------         ------------
NET INCREASE IN NET ASSETS RESULTING FROM OPERATIONS ........................      42,593,646           51,720,593
                                                                                 ------------         ------------
DISTRIBUTIONS TO SHAREHOLDERS:
  Net realized gain on investments ..........................................     (34,529,473)          (8,006,838)
                                                                                 ------------         ------------
  TOTAL DISTRIBUTIONS TO SHAREHOLDERS .......................................     (34,529,473)          (8,006,838)
                                                                                 ------------         ------------
CAPITAL SHARE TRANSACTIONS:
  Net increase (decrease) in net assets from capital share transactions .....      24,154,412          (16,130,819)
                                                                                 ------------         ------------
  NET INCREASE IN NET ASSETS ................................................      32,218,585           27,582,936

NET ASSETS:
  Beginning of period .......................................................     305,402,716          277,819,780
                                                                                 ------------         ------------
  End of period .............................................................    $337,621,301         $305,402,716
                                                                                 ============         ============
</TABLE>

                 See accompanying notes to financial statements.

                                        14

<PAGE>

THE GABELLI SMALL CAP GROWTH FUND
NOTES TO FINANCIAL STATEMENTS (UNAUDITED)
- --------------------------------------------------------------------------------

1.  ORGANIZATION.  The Gabelli Small Cap Growth Fund (the  "Fund"),  a series of
Gabelli Equity Series Funds, Inc. (the "Corporation"), was organized on July 25,
1991 as a Maryland corporation.  The Fund is a diversified,  open-end management
investment  company  registered  under the  Investment  Company Act of 1940,  as
amended  (the  "1940  Act"),  and  one  of  two  separately  managed  portfolios
(collectively,  the  "Portfolios") of the  Corporation,  each with four separate
classes of shares known as Class AAA,  Class A, Class B and Class C.  Currently,
only Class AAA Shares are offered to the public. The Fund's primary objective is
capital  appreciation.  The Fund commenced investment  operations on October 22,
1991.

2. SIGNIFICANT  ACCOUNTING POLICIES.  The preparation of financial statements in
accordance with generally accepted accounting  principles requires management to
make estimates and assumptions  that affect the reported amounts and disclosures
in the financial  statements.  Actual results could differ from those estimates.
The following is a summary of significant  accounting  policies  followed by the
Fund in the preparation of its financial statements.

SECURITY  VALUATION.  Portfolio  securities  listed or  traded  on a  nationally
recognized securities exchange, quoted by the National Association of Securities
Dealers Automated Quotations, Inc. ("Nasdaq") or traded on foreign exchanges are
valued at the last sale price on that  exchange  as of the close of  business on
the day the  securities  are being  valued (if there were no sales that day, the
security is valued at the  average of the  closing  bid and asked  prices or, if
there were no asked  prices  quoted on that day,  then the security is valued at
the closing bid price on that day,  except for open short  positions,  which are
valued at the last  asked  price).  All  other  portfolio  securities  for which
over-the-counter  market  quotations  are  readily  available  are valued at the
latest average of the bid and asked prices.  Portfolio securities traded on more
than one  national  securities  exchange or market are valued  according  to the
broadest and most  representative  market,  as determined by Gabelli Funds,  LLC
(the  "Adviser").  Securities  and assets for which  market  quotations  are not
readily  available  are valued at their fair value as  determined  in good faith
under procedures  established by and under the general  supervision of the Board
of Directors. Short term debt securities with remaining maturities of 60 days or
less are valued at amortized cost, unless the Directors  determine such does not
reflect the  securities'  fair  value,  in which case these  securities  will be
valued at their fair value as  determined  by the  Directors.  Debt  instruments
having a  maturity  greater  than 60 days are  valued at the  highest  bid price
obtained from a dealer maintaining an active market in those securities. Options
are valued at the last sale price on the  exchange on which they are listed.  If
no sales of such options  have taken place that day,  they will be valued at the
mean between their closing bid and asked prices.

REPURCHASE  AGREEMENTS.  The Fund may  enter  into  repurchase  agreements  with
primary government  securities dealers recognized by the Federal Reserve Bank of
New York,  with member banks of the Federal Reserve System or with other brokers
or dealers that meet credit guidelines  established by the Directors.  Under the
terms of a  typical  repurchase  agreement,  the  Fund  takes  possession  of an
underlying debt obligation subject to an obligation of the seller to repurchase,
and the Fund to resell, the obligation at an agreed-upon price and time, thereby
determining  the yield during the Fund's  holding  period.  The Fund will always
receive and maintain  securities  as collateral  whose market  value,  including
accrued  interest,  will be at least equal to 100% of the dollar amount invested
by the Fund in each  agreement.  The Fund will make payment for such  securities
only upon  physical  delivery  or upon  evidence  of book entry  transfer of the
collateral to the account of the  custodian.  To the extent that any  repurchase
transaction   exceeds  one  business  day,  the  value  of  the   collateral  is
marked-to-market on a daily basis to maintain

                                        15

<PAGE>

THE GABELLI SMALL CAP GROWTH FUND
NOTES TO FINANCIAL STATEMENTS (CONTINUED) (UNAUDITED)
- --------------------------------------------------------------------------------

the  adequacy of the  collateral.  If the seller  defaults  and the value of the
collateral  declines or if bankruptcy  proceedings are commenced with respect to
the seller of the  security,  realization  of the  collateral by the Fund may be
delayed or limited.

FUTURES  CONTRACTS.  The Fund may engage in futures contracts for the purpose of
hedging  against  changes in the value of its  portfolio  securities  and in the
value of  securities  it  intends  to  purchase.  Upon  entering  into a futures
contract,  the Fund is required to deposit  with the broker an amount of cash or
cash equivalents equal to a certain  percentage of the contract amount.  This is
known as the "initial margin". Subsequent payments ("variation margin") are made
or  received by the Fund each day,  depending  on the daily  fluctuation  of the
value of the  contract.  The daily  changes  in the  contract  are  included  in
unrealized gains or losses. The Fund recognizes a realized gain or loss when the
contract is closed. At March 31, 2000, there were no open futures contracts.

There are several  risks in  connection  with the use of futures  contracts as a
hedging device. The change in value of futures contracts  primarily  corresponds
with the value of their underlying instruments, which may not correlate with the
change in value of the hedged investments.  In addition,  there is the risk that
the Fund may not be able to  enter  into a  closing  transaction  because  of an
illiquid secondary market.

FORWARD  FOREIGN  EXCHANGE  CONTRACTS.  The Fund may engage in  forward  foreign
exchange contracts for hedging a specific transaction with respect to either the
currency in which the  transaction is denominated or another  currency as deemed
appropriate by the Adviser. Forward foreign exchange contracts are valued at the
forward  rate and are  marked-to-market  daily.  The  change in market  value is
included in  unrealized  appreciation/depreciation  on  investments  and foreign
currency transactions.  When the contract is closed, the Fund records a realized
gain or loss equal to the  difference  between the value of the  contract at the
time it was opened and the value at the time it was closed.

The use of forward foreign exchange contracts does not eliminate fluctuations in
the underlying prices of the Fund's portfolio securities,  but it does establish
a rate of exchange that can be achieved in the future.  Although forward foreign
exchange  contracts  limit the risk of loss due to a decline in the value of the
hedged  currency,  they also limit any potential  gain/(loss)  that might result
should  the value of the  currency  increase.  In  addition,  the Fund  could be
exposed to risks if the  counterparties  to the contracts are unable to meet the
terms of their contracts.

FOREIGN CURRENCY  TRANSLATION.  The books and records of the Fund are maintained
in United States  (U.S.)  dollars.  Foreign  currencies,  investments  and other
assets and liabilities  are translated  into U.S.  dollars at the exchange rates
prevailing  at the end of the  period,  and  purchases  and sales of  investment
securities,  income and expenses are translated at the exchange rate  prevailing
on the respective dates of such transactions. Unrealized gains and losses, which
result from changes in foreign exchange rates and/or changes in market prices of
securities,  have  been  included  in  unrealized  appreciation/depreciation  on
investments and foreign  currency  transactions.  Net realized  foreign currency
gains and losses  resulting  from  changes in  exchange  rates  include  foreign
currency gains and losses  between trade date and settlement  date on investment
securities  transactions,  foreign  currency  transactions  and  the  difference
between the amounts of interest and dividends  recorded on the books of the Fund
and the amounts  actually  received.  The portion of foreign  currency gains and
losses  related to  fluctuation in exchange rates between the initial trade date
and  subsequent  sale  trade  date  is  included  in  realized   gain/(loss)  on
investments.

                                       16

<PAGE>

THE GABELLI SMALL CAP GROWTH FUND
NOTES TO FINANCIAL STATEMENTS (CONTINUED) (UNAUDITED)
- --------------------------------------------------------------------------------

SECURITIES  TRANSACTIONS  AND INVESTMENT  INCOME.  Securities  transactions  are
accounted  for on the  trade  date  with  realized  gain or loss on  investments
determined  by using the  identified  cost method.  Interest  income  (including
amortization  of premium  and  accretion  of  discount)  is  recorded as earned.
Dividend income is recorded on the ex-dividend date.

DIVIDENDS AND  DISTRIBUTIONS  TO  SHAREHOLDERS.  Dividends and  distributions to
shareholders  are recorded on the ex-dividend  date.  Income  distributions  and
capital  gain  distributions  are  determined  in  accordance  with  income  tax
regulations  which may differ from  generally  accepted  accounting  principles.
These differences are primarily due to differing  treatments of income and gains
on  various  investment  securities  held by the Fund,  timing  differences  and
differing characterization of distributions made by the Fund.

EXPENSES.  Certain  administrative  expenses are common to, and allocated among,
the  Portfolios.  Such  allocations  are made on the  basis of each  Portfolio's
average  net  assets  or other  criteria  directly  affecting  the  expenses  as
determined by the Adviser.

PROVISION  FOR  INCOME  TAXES.  The Fund  intends  to  continue  to qualify as a
regulated  investment company under Subchapter M of the Internal Revenue Code of
1986, as amended. As a result, a Federal income tax provision is not required.

Dividends and interest from non-U.S.  sources received by the Fund are generally
subject  to  non-U.S.  withholding  taxes  at  rates  ranging  up to  30%.  Such
withholding  taxes may be reduced or  eliminated  under the terms of  applicable
U.S. income tax treaties, and the Fund intends to undertake any procedural steps
required to claim the benefits of such treaties.

3.  INVESTMENT  ADVISORY  AGREEMENT.  The Fund has  entered  into an  investment
advisory  agreement (the "Advisory  Agreement")  with the Adviser which provides
that the Fund will pay the Adviser a fee,  computed  daily and paid monthly,  at
the annual rate of 1.00% of the value of the Fund's average daily net assets. In
accordance  with the  Advisory  Agreement,  the  Adviser  provides a  continuous
investment program for the Fund's portfolio,  oversees the administration of all
aspects of the Fund's  business  and  affairs and pays the  compensation  of all
Officers and Directors of the Fund who are its affiliates.

4.  DISTRIBUTION  PLAN. The Fund's Board of Directors has adopted a distribution
plan (the "Plan")  pursuant to Rule 12b-1 under the 1940 Act. For the six months
ended March 31, 2000, the Fund incurred  distribution costs payable to Gabelli &
Company,  Inc.,  an affiliate of the Adviser,  of $405,610,  or 0.25% of average
daily net  assets,  the annual  limitation  under the Plan.  Such  payments  are
accrued daily and paid monthly.

5.  PORTFOLIO  SECURITIES.  Purchases and sales of securities for the six months
ended March 31, 2000, other than short term securities,  aggregated  $55,062,751
and $59,616,112, respectively.

6. TRANSACTIONS WITH AFFILIATES. During the six months ended March 31, 2000, the
Fund paid brokerage  commissions  of $83,953 to Gabelli & Company,  Inc. and its
affiliates.

7. LINE OF CREDIT.  The Fund has access to an unsecured  line of credit from the
custodian for temporary  borrowing  purposes.  Borrowings under this arrangement
bear  interest at 0.75% above the Federal  Funds rate on  outstanding  balances.
There were no borrowings outstanding at March 31, 2000.


                                       17

<PAGE>

THE GABELLI SMALL CAP GROWTH FUND
NOTES TO FINANCIAL STATEMENTS (CONTINUED) (UNAUDITED)
- --------------------------------------------------------------------------------

The average amount of borrowings  outstanding  daily during the six months ended
March 31, 2000, was $72,678,  with a related  weighted  average interest rate of
6.31%. The maximum amount borrowed at any time during the six months ended March
31, 2000, was $700,000.

8. CAPITAL STOCK  TRANSACTIONS.  Transactions in shares of capital stock were as
follows:

<TABLE>
<CAPTION>
                                                           SIX MONTHS ENDED                     YEAR ENDED
                                                            MARCH 31, 2000                  SEPTEMBER 30, 1999
                                                     ---------------------------       ---------------------------
                                                       SHARES          AMOUNT            SHARES          AMOUNT
                                                     ----------      -----------       ----------      ------------
<S>                                                   <C>            <C>                <C>            <C>
Shares sold ......................................    3,431,171      $74,639,375        7,363,983      $155,723,402
Shares issued upon reinvestment of dividends .....    1,606,332       33,008,696          386,789         7,658,321
Shares redeemed ..................................   (3,841,600)     (83,493,659)      (8,536,838)     (179,512,542)
                                                     ----------      -----------       ----------      ------------
     Net increase ................................    1,195,903      $24,154,412         (786,066)     $(16,130,819)
                                                     ==========      ===========       ==========      ============
</TABLE>

9.  TRANSACTIONS  IN  SECURITIES  OF  AFFILIATED  ISSUERS.  The 1940 Act defines
affiliated  issuers as those in which the Fund's holdings of an issuer represent
5% or more of the outstanding  voting securities of the issuer. A summary of the
Fund's  transactions  in the  securities of these issuers  during the six months
ended March 31, 2000, is set forth below:

<TABLE>
<CAPTION>
                                                                                                            PERCENT
                                             SHARES                                          VALUE AT        OWNED
                             BEGINNING      PURCHASED     ENDING     REALIZED    DIVIDEND      MARCH       OF SHARES
                              SHARES         (SOLD)       SHARES      (LOSS)      INCOME     31, 2000     OUTSTANDING
                             ---------      ---------     ------     --------    --------    --------     -----------
<S>                            <C>             <C>        <C>        <C>          <C>        <C>              <C>
Trans-Lux Corp. ...........    87,000          --         87,000     $      0     $9,135     $587,250         9.06%
                               ------       ---------     ------     --------     ------     --------         ----
</TABLE>



                                        18

<PAGE>

THE GABELLI SMALL CAP GROWTH FUND
FINANCIAL HIGHLIGHTS
- --------------------------------------------------------------------------------

Selected data for a share of capital stock outstanding throughout each period:

<TABLE>
<CAPTION>

                                             SIX MONTHS ENDED              YEAR ENDED SEPTEMBER 30,
                                              MARCH 31, 2000   -------------------------------------------------
                                               (UNAUDITED)     1999        1998       1997        1996      1995
                                               -----------     ----        ----       ----        ----      ----
<S>                                              <C>          <C>         <C>        <C>        <C>        <C>
OPERATING PERFORMANCE:
   Net asset value, beginning of period .......  $ 21.84      $ 18.81     $ 25.42    $ 20.02    $ 19.34    $ 17.24
                                                 -------      -------     -------    -------    -------    -------
   Net investment income (loss) ...............     0.02        (0.07)      (0.03)     (0.07)     (0.09)     (0.04)
   Net realized and unrealized gain (loss)
     on investments ...........................     2.84         3.63       (2.99)      7.70       2.11       3.17
                                                 -------      -------     -------    -------    -------    -------
   Total from investment operations ...........     2.86         3.56       (3.02)      7.63       2.02       3.13
                                                 -------      -------     -------    -------    -------    -------
DISTRIBUTIONS TO SHAREHOLDERS:
   Net realized gain on investments ...........    (2.46)       (0.53)      (3.59)     (2.23)     (1.34)     (1.03)
                                                 -------      -------     -------    -------    -------    -------
   Total distributions ........................    (2.46)       (0.53)      (3.59)     (2.23)     (1.34)     (1.03)
                                                 -------      -------     -------    -------    -------    -------
   NET ASSET VALUE, END OF PERIOD .............  $ 22.24      $ 21.84     $ 18.81    $ 25.42    $ 20.02    $ 19.34
                                                 =======      =======     =======    =======    =======    =======
   Total return+ ..............................   14.00%       19.24%    (13.53)%     42.22%     10.97%     19.66%
                                                 =======      =======     =======    =======    =======    =======
RATIOS TO AVERAGE NET ASSETS AND
   SUPPLEMENTAL DATA:
   Net assets, end of period (in 000's) ....... $337,621     $305,403    $277,820   $296,519   $223,239   $231,156
   Ratio of net investment income (loss)
     to average net assets ....................    0.16%(b)   (0.34)%     (0.14)%    (0.36)%    (0.42)%    (0.24)%
   Ratio of operating expenses
     to average net assets (a) ................    1.50%(b)     1.56%       1.44%      1.62%      1.58%      1.54%
   Portfolio turnover rate ....................      18%          24%         20%        14%        11%        17%
</TABLE>
- --------------------------------
+   Total return  represents  aggregate  total return of a  hypothetical  $1,000
    investment  at the beginning of the period and sold at the end of the period
    including  reinvestment  of  dividends.  Total return for the period of less
    than one year is not annualized.
(a) The Fund  incurred  interest  expense  during the six months ended March 31,
    2000 and the fiscal  years ended  September  30, 1999 and 1997.  If interest
    expense had not been incurred,  the ratios of operating  expenses to average
    net assets would have been 1.50%, 1.53% and 1.52%, respectively.
(b) Annualized.

                 See accompanying notes to financial statements.

                                       19

<PAGE>

                        Gabelli Equity Series Funds, Inc.
                        THE GABELLI SMALL CAP GROWTH FUND
                              One Corporate Center
                            Rye, New York 10580-1434
                                  1-800-GABELLI
                                [1-800-422-3554]
                               FAX: 1-914-921-5118
                             HTTP://WWW.GABELLI.COM
                            E-MAIL: [email protected]
                (Net Asset Value may be obtained daily by calling
                         1-800-GABELLI after 6:00 P.M.)

                               BOARD OF DIRECTORS
          Mario J. Gabelli, CFA           Robert J. Morrissey
          CHAIRMAN AND CHIEF              ATTORNEY-AT-LAW
          INVESTMENT OFFICER              MORRISSEY, HAWKINS & LYNCH
          GABELLI ASSET MANAGEMENT INC.

          Felix J. Christiana             Karl Otto Pohl
          FORMER SENIOR VICE PRESIDENT    FORMER PRESIDENT
          DOLLAR DRY DOCK SAVINGS BANK    DEUTSCHE BUNDESBANK

          Anthony J. Colavita             Anthony R. Pustorino
          ATTORNEY-AT-LAW                 CERTIFIED PUBLIC ACCOUNTANT
          ANTHONY J. COLAVITA, P.C.       PROFESSOR, PACE UNIVERSITY

          Vincent D. Enright              Anthonie C. van Ekris
          FORMER SENIOR VICE PRESIDENT    MANAGING DIRECTOR
          AND CHIEF FINANCIAL OFFICER     BALMAC INTERNATIONAL, INC.
          KEYSPAN ENERGY CORP.

          John D. Gabelli
          SENIOR VICE PRESIDENT
          GABELLI & COMPANY, INC.

                                    OFFICERS
          Mario J. Gabelli, CFA           Bruce N. Alpert
          PRESIDENT AND CHIEF             VICE PRESIDENT AND TREASURER
          INVESTMENT OFFICER

          James E. McKee
          SECRETARY

                                   DISTRIBUTOR
                             Gabelli & Company, Inc.

                  CUSTODIAN, TRANSFER AGENT AND DIVIDEND AGENT
                       State Street Bank and Trust Company

                                  LEGAL COUNSEL
                    Skadden, Arps, Slate, Meagher & Flom LLP

- --------------------------------------------------------------------------------
This report is submitted for the general  information of the shareholders of The
Gabelli  Small  Cap  Growth  Fund.  It is not  authorized  for  distribution  to
prospective investors unless preceded or accompanied by an effective prospectus.

- --------------------------------------------------------------------------------
GAB443Q100SR


                                             [Photo of Mario J. Gabelli omitted]

THE
GABELLI
SMALL CAP
GROWTH
FUND


                                                              SEMI-ANNUAL REPORT
                                                                  March 31, 2000


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