GABELLI INVESTOR FUNDS INC
N-30B-2, 2000-05-18
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                              THE GABELLI ABC FUND

                              FIRST QUARTER REPORT
                                 MARCH 31, 2000


"GIVE A MAN A FISH AND YOU FEED HIM FOR A DAY.
TEACH HIM HOW TO ARBITRAGE AND YOU FEED HIM FOREVER."
     - Warren Buffett

                 [Graphic omitted of book cover "Deals...Deals...and More Deals]


TO OUR SHAREHOLDERS,

      In the first  quarter of 2000, we continued to experience a "have and have
not" stock  market.  Until the last week of the quarter,  when we saw a rotation
out of the  technology  sector and into value  sectors,  so called "new economy"
stocks flourished,  while "old economy" stocks languished or retreated.  Despite
the late sell-off, the technology-heavy Nasdaq Composite Index and the small cap
growth-oriented  Russell  2000 Index  finished  with solid gains.  However,  the
Standard & Poor's 500 Index closed the quarter only modestly  higher,  while the
Dow Jones Industrial Average declined.

INVESTMENT PERFORMANCE

     For the first  quarter  ended March 31,  2000,  the Gabelli ABC Fund's (the
"Fund") total return was 2.44%.  The Lipper U.S.  Treasury  Money Market Average
had a total return of 1.22% over the same period.  The Lipper  Average  reflects
the average performance of mutual funds classified in this particular  category.
The Fund was up 10.96% over the trailing  twelve-month  period.  The Lipper U.S.
Treasury Money Market Average rose 4.73% over the same twelve-month period.

      For the  five-year  period ended March 31,  2000,  the Fund's total return
averaged 10.05% annually versus an average annual return of 4.80% for the Lipper
U.S.  Treasury  Money Market  Average.  Since  inception on May 14, 1993 through
March 31, 2000, the Fund had a cumulative total return of 91.24%,  which equates
to an average annual total return of 9.87%.

<PAGE>

INVESTMENT RESULTS (a)
- --------------------------------------------------------------------------------
                                          Quarter
                          ----------------------------------------
                            1st        2nd        3rd         4th        Year
                            ---        ---        ---         ---        ----
2000:   Net Asset Value    $9.67       --          --         --          --
        Total Return        2.4%       --          --         --          --
- --------------------------------------------------------------------------------
1999:   Net Asset Value    $9.65     $10.20     $10.21       $9.44      $9.44
        Total Return        0.6%       5.7%       0.1%        2.4%       9.0%
- --------------------------------------------------------------------------------
1998:   Net Asset Value   $10.64     $10.68     $10.16       $9.59      $9.59
        Total Return        4.0%       0.4%     (4.9)%       11.9%      11.1%
- --------------------------------------------------------------------------------
1997:   Net Asset Value    $9.98     $10.45     $10.74      $10.23     $10.23
        Total Return        1.4%       4.7%       2.8%        3.3%      12.8%
- --------------------------------------------------------------------------------
1996:   Net Asset Value   $10.10     $10.16      $9.77       $9.84      $9.84
        Total Return        4.1%       0.6%       0.8%        2.2%       7.8%
- --------------------------------------------------------------------------------
1995:   Net Asset Value    $9.94     $10.14     $10.41       $9.71      $9.71
        Total Return        3.9%       2.0%       2.7%        2.2%      11.2%
- --------------------------------------------------------------------------------
1994:   Net Asset Value   $10.12     $10.11     $10.42       $9.57      $9.57
        Total Return        0.9%     (0.1)%       3.1%        0.6%       4.5%
- --------------------------------------------------------------------------------
1993:   Net Asset Value      --      $10.10     $10.63      $10.03     $10.03
        Total Return         --        1.0%(b)    5.2%        2.6%       9.1%(b)
- --------------------------------------------------------------------------------

- --------------------------------------------------------
       Average Annual Returns - March 31, 2000 (a)
       -------------------------------------------
  1 Year ....................................   10.96%
  3 Year ....................................   10.05%
  Life of Fund (b) ..........................    9.87%
- --------------------------------------------------------


                   Dividend History
- --------------------------------------------------------
Payment (ex) Date   Rate Per Share   Reinvestment  Price
- -----------------   --------------   -------------------
December 27, 1999        $1.000            $ 9.32
December 28, 1998        $1.763            $ 9.50
December 29, 1997        $0.860            $10.17
December 27, 1996        $0.146            $ 9.83
September 30, 1996       $0.470            $ 9.77
December 28, 1995        $0.930            $ 9.71
December 28, 1994        $0.910            $ 9.52
December 31, 1993        $0.880            $10.03


(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 May 14, 1993.
- --------------------------------------------------------------------------------

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

COMMENTARY

THE PERILS OF PAULINE

      In each  episode of the old movie  serial,  "The Perils of  Pauline",  the
heroine  faced  certain  doom until a hero  suddenly  appeared  to save the day.
Through most of the first quarter of 2000, rising short-term  interest rates, as
well as the perception that Federal Reserve Chairman Alan Greenspan was

                                        2

<PAGE>

determined  to  restrain  the  stock  market as well as the  economy,  imperiled
equities.  With equities  dangling from a cliff, a hero in the form of declining
market interest rates (bond yields) rescued stocks from a sharp  correction that
appeared ready to turn into a full scale bear market.

      Of course,  in the old movie shorts,  as soon as Pauline  escaped from one
life-threatening  predicament, she was thrust into another. Over the short term,
we suspect the stock market will also face a series of new dangers.  The Federal
Reserve should continue to hike short-term  interest rates,  eventually  killing
the nascent bond market rally and putting pressure back on stocks. Valuations in
the  technology  sector  also  present  a risk  to the  market.  If  some of the
technology "bell weathers" fall short of rather grand earnings expectations,  we
could see a sharp  correction that would drag down the market indices.  There is
also the  uncertainty of an election year.  Will a Bush victory lead to tax cuts
that will help sustain  consumer  spending or will a Gore triumph dash the hopes
of consumers and investors counting on tax relief?

      There are plenty of  potential  heroes  that  could once again  rescue the
market.  Corporate  earnings  growth is strong  and,  with  synchronized  global
growth,  may get stronger.  If we see evidence of economic  deceleration  in the
second  half of the year,  the Fed may release  the  monetary  brakes and market
interest  rates  could  come down  further.  We should  continue  to see  deals,
particularly in out-of-favor  industries  where many great companies have become
irresistible  business  bargains.  Deals may finally prop up the value sector of
the market. Finally,  investors love happy endings. Over the last several years,
whenever stocks have stumbled investors have rushed in to lift them to safety.

      We are always attuned to the economic and stock market melodrama. However,
we try to keep our ABC Fund  shareholders out of harm's way by investing in time
sensitive  merger and acquisition  deals - risk arbitrage.  This may be dull and
periodically not particularly productive. However, over the Fund's history, this
approach has produced steady, low risk, non-market correlated returns.

WHAT IS RISK ARBITRAGE?

      Simply  stated,  risk  arbitrage is  investing in a merger or  acquisition
target after the deal has been  announced and  pocketing the spread  between the
trading  price of the target  company  following the  announcement  and the deal
price  upon  closing.  This  spread is  usually  relatively  narrow,  offering a
somewhat  modest nominal total return.  However,  since deals generally close in
much less than a year's time,  this modest total return  translates  into a much
more attractive annualized return.

MERGERS AND ACQUISITIONS

      The value of announced  mergers and  acquisitions  in the first quarter of
2000 increased to $1.17 trillion from $835 billion in the first quarter of 1999.
Merger  activity  continues to surge as companies in industries such as banking,
broadcasting, brokerage, telecommunications,  utilities, defense and health care
combine in response to falling regulatory barriers and increased competition.

                                        3

<PAGE>

      A number of themes continued to surface in the first quarter. Cross border
mergers,  minority  buy-outs,   strategic  acquisitions  and  hostile  bids  all
highlighted a vibrant arbitrage  environment.  Arbitrage  activity should remain
dynamic during the coming months as strategic mergers and acquisitions  continue
to be  announced  in a variety of  industries.  We plan to  capitalize  on those
opportunities that fit our investment philosophy.

WHAT'S NEXT?

      So what will happen in the stock  market over the next  several  quarters?
Will robust corporate  earnings growth compensate for higher short term interest
rates?  Will the bond rally fizzle,  halting the stock market's  momentum?  Will
technology stocks falter, dragging the market lower? Will a rally in the dormant
value sector help buoy the market  indices?  Will investors  remain so confident
that every market dip is viewed as a buying opportunity, or will investors panic
if we see a more prolonged  market slide? We do not think anyone has the answers
to all of these questions. We do believe the conservatively constructed ABC Fund
portfolio  should make  progress in a favorable  stock  market  environment  and
provide a safe anchor in any stock market storm.

THIS QUARTER'S SCORECARD

      In  general,  our  equity  investments  performed  quite well in the first
quarter of 2000.  The small cap stocks in the  portfolio  led the way,  with the
biggest gains coming from small companies such as Shenandoah Telecommunications,
Fisher  Scientific,  Dynatech and American Tower Systems.  Our utility  holdings
were mixed,  with solid gains for AGL  Resources,  Citizens  Utilities,  Florida
Progress and WICOR, and declines for Southwest Gas and Florida Public Utilities.
Industrial  cyclicals  such as WHX,  Federal-Mogul  and Fairchild  disappointed,
while our arbitrage investments continued to deliver steady returns.

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 which 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.

                                        4

<PAGE>

CITIZENS  UTILITIES  CO.  (CZN -  $16.375  - NYSE)  provides  telecommunications
services  and public  services  to  approximately  1.9 million  customers  in 22
states.  Citizens owns 83% of Electric  Lightwave  (ELIX - $23.875 - Nasdaq),  a
competitive  local exchange carrier ("CLEC") serving  primarily the western U.S.
Management  has  authorized  the  separation  of  Citizens'   telecommunications
businesses and public services businesses into two stand-alone,  publicly traded
companies. Recently, CZN announced agreements to acquire about one million rural
access  lines in 11 states  for $2.8  billion.  CZN  intends  to  finance  these
transactions  by divesting its public services  operations.  Its water and waste
water  operations have been sold for $835 million.  The company has an agreement
to sell all its electric and waste water  utility  operations to Cap Rock Energy
and Kauai  Island  Electric  Company  for an  aggregate  purchase  price of $535
million.  The company has sold its 16% stake in  Centennial  Communications  for
approximately  $205  million.   Citizens  monetized  its  ownership  of  Century
Communications'  (CTYA - $45.625 - Nasdaq) stock and cable operations  through a
sale to Adelphia Communications for approximately $220 million.

COLUMBIA  ENERGY  GROUP (CG - $59.25 - NYSE) ended months of  speculation  after
finally  agreeing to an offer from NiSource Inc. (NI - $16.875 - NYSE).  NI will
acquire all of the outstanding shares of CG for a total equity  consideration of
$6 billion.  NI will also assume about $2.5 billion in CG debt.  Under the terms
of the  agreement,  CG holders  will receive $70 in cash plus a $2.60 face value
SAILS (a unit  consisting of a zero coupon debt  security with a forward  equity
contract).  Subject to various  regulatory  approvals,  the companies  expect to
complete  the  merger  by the end of 2000.  The  combined  entity  will have the
largest customer base of any gas company east of the Rocky Mountains.

DUFF & PHELPS  CREDIT  RATING CO. (DCR - $99.6875 - NYSE) agreed to be bought by
Fitch IBCA (FIM.P - $137.56 - Paris Stock  Exchange),  the world's third largest
credit  rating  agency,  for $528 million in cash.  The deal closed on April 11.
Fitch  IBCA is  actually  a unit  of the  French  holding  company  Fimalac  SA.
Shareholders  of DCR were  paid  $100 per share in cash,  a 27%  premium  to the
stock's pre-deal price. DCR had been an independent  company since 1994, when it
was spun off from Phoenix  Investment  Partners Ltd. Since that time, its shares
rose 550%.

EASTERN ENTERPRISES (EFU - $59.875 - NYSE) owns and operates Boston Gas Company,
Colonial Gas Company,  Essex Gas Company,  Midland  Enterprises,  and ServicEdge
Partners.  Upon completion of the pending merger with EnergyNorth (EI - $58.25 -
NYSE),  Eastern will serve over 800,000  residential,  commercial and industrial
natural gas customers in Massachusetts and New Hampshire.  Midland  Enterprises,
headquartered  in Cincinnati,  Ohio, is the leading  carrier of coal and a major
carrier of other dry bulk cargoes on the nation's inland waterways, with a fleet
of 2,300 barges and 87 towboats.  ServicEdge is the largest unregulated provider
of residential  heating,  ventilation and air  conditioning  ("HVAC")  equipment
installation  and service to customers in  Massachusetts.  In November,  Eastern
announced it had entered into an agreement to be acquired by KeySpan Corp.  (KSE
- - $27.625 - NYSE) for $64.00 per share in cash.

                                        5

<PAGE>

ESAT TELECOM GROUP PLC (ESAT - $99.875 - NASDAQ), Ireland's second largest phone
company,  successfully  found a  white-knight  to fend off the hostile  offer it
received  from  Norwegian  phone  giant  Telenor  AS.  On  January  11,  British
Telecommunications  plc (BTY -  $188.125  - NYSE)  agreed  to buy Esat for $2.46
billion in cash,  valuing Esat at $100 per share. The $100 per share bid trumped
Telenor's  $85  per-share  hostile  offer made in late  December.  The agreement
between BTY and Esat,  which  became  wholly  unconditional  on March 30, ends a
sequence of hostile bidding activity that saw Esat trade up from $55 per share.

GENERAL CIGAR HOLDINGS INC. (MPP - $15.125 - NYSE) and Swedish Match AB (SWMA.SS
- - $229.90 - Stockholm  Stock  Exchange) have agreed to a merger that will result
in  ownership of a 64% interest in General  Cigar by SWMA.  The Cullman  family,
which has managed  General Cigar since 1961,  will sell one third of its General
Cigar  holdings  to SWMA for $15 a  share,  but will  retain a 36%  interest  in
General  Cigar.  In the offer to public  shareholders,  SWMA will pay $15.25 per
share of MPP. In General  Cigar,  SWMA will increase its presence in the premium
cigar  market  through  such brands as Macanudo,  Partagas,  Punch,  and Hoyo de
Monterrey. The transaction is expected to close in May.

HANNAFORD  BROTHERS  CO. (HRD - $73.75 - NYSE) agreed to be acquired by Delhaize
America (DZA - $18.00 - NYSE) for $3.6 billion,  expanding  DZA's reach into the
Northeastern  US. DZA, which recently  changed its corporate name from Food Lion
Co.,  will  pay $79  per  share  in cash  and  stock.  Approximately  85% of the
consideration  will be paid in cash and 15% in DZA  common  stock.  DZA wants to
narrow the gap with competitors such as Royal Ahold NV,  Albertson's and Kroger,
which have been  combining to cut costs and squeeze  savings  from  suppliers as
their competitors expand and low-price  retailers such as Wal-Mart and Kmart add
more  groceries to their stores.  The two companies will need to divest a number
of stores in the Southeast to satisfy antitrust concerns.

KAMAN  CORP.  (KAMNA - $9.75 -  NASDAQ),  founded  in 1945,  is a pioneer in the
helicopter industry.  Aircraft  manufacturing  remains the core of the business.
Kaman serves both  commercial  and  governmental  markets with  helicopters  and
aircraft  components.  The company also produces  specialized,  high-value niche
market  products and services  which tend to be  technological  leaders in their
markets.  Kaman is a major,  national distributor of original equipment,  repair
and  replacement  products  and  value-added  services to nearly every sector of
North American industry.  The company also manufactures and distributes  musical
instruments (Ovation guitars) and accessories to independent retailers.

UNITED WATER  RESOURCES  INC. (UWR - $34.75 - NYSE) will sell the  two-thirds of
the  company  that Suez  Lyonnaise  des Eaux SA (LY.P -  $171.57  - Paris  Stock
Exchange)  does not already own to LY for $1.8 billion in cash and assumed debt.
LY  offered  $35 per  share in cash and will  assume  $800  million  in debt and
preferred stock of UWR, the number two U.S. water company.  LY also bought Nalco
Chemical  Co.,  the  biggest  U.S.  maker  of  water-treatment  chemicals.  LY's
acquisitions  in the U.S.  water market are part of its effort to keep pace with
its French rival Vivendi, which has also been making advances in the

                                        6

<PAGE>

U.S.  water  market.  UWR  provides  water and sewer  treatment  services to 7.5
million people in 19 states.  Upon  completion of the UWR  acquisition,  LY will
have worldwide water and wastewater revenues of more than $7.4 billion.

U.S. FOODSERVICE (UFS - $25.75 - NYSE) entered into an agreement to be bought by
Royal  Ahold  NV  (AHLN.NA  -  $25.97  -  Amsterdam  Stock  Exhange),   Europe's
third-largest  supermarket  company,  for $3.6 billion in cash and assumed debt.
AHLN paid $26 per share in cash and  assumed  about $925  million in debt in the
deal that closed on April 12. AHLN financed the  transaction  through 50% equity
and 50%  debt.  The  company  plans to do an equity  or  equity-linked  security
issuance  for about 3 billion  euros in the  spring  of 2000.  Because  of UFS's
strong  management  team and leading  position  as a  foodservice  company,  the
multiple paid was quite rich.

WICOR INC. (WIC - $31.00 - NYSE), the largest gas distributor in Wisconsin,  has
agreed  to be bought  by  Wisconsin  Energy  Corp.  (WEC -  $19.938  - NYSE),  a
Milwaukee electric and natural gas utility, for $1.27 billion in cash and stock.
WIC  shareholders  will  receive  $31.50  per share in cash.  The  merger  needs
approval from the Wisconsin Utilities Commission,  the SEC and the FTC. Although
WEC had to terminate an agreement to merge three years ago with Northern  States
Power because of regulatory concerns in Wisconsin,  this deal is not expected to
raise objections  because it does not create a dominant presence in the electric
industry.  The combined  company will have 921,000 gas customers and more than 1
million  electric  customers in Wisconsin and  Michigan.  In addition to its gas
distribution  business,  WICOR  obtains about 50% of its revenues from its pumps
business.

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 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].

                                       7
<PAGE>

IN CONCLUSION

      In the first  quarter of the new century  and the end of its seventh  full
year  of  operation,   the  ABC  Fund   continued  to  fulfill  its  mandate  to
shareholders.  Our  portfolio  of selective  equity  investments  and  arbitrage
holdings produced a respectable return in a very volatile market environment. We
will strive to continue to meet our shared investment objective.

      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 GABCX.  Please call us during the
business day for further information.

                                   Sincerely,

                                   /S/ Mario J. Gaeblli

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

April 14, 2000

- --------------------------------------------------------------------------------
                                TOP TEN HOLDINGS
                                 MARCH 31, 2000
                                 --------------
       Esat Telecom Group plc                United Water Resources Inc.
       General Cigar Holdings Inc.           WICOR Inc.
       U.S. Foodservice                      Columbia Energy Group
       Travelers Property Casualty Corp.     Catellus Development Corp.
       Duff &Phelps Credit Rating Co.        Hannaford Bros. Co.
- --------------------------------------------------------------------------------

 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.

                                        8

<PAGE>

THE GABELLI ABC FUND
PORTFOLIO OF INVESTMENTS -- MARCH 31, 2000 (UNAUDITED)
- --------------------------------------------------------------------------------

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

              COMMON STOCKS -- 97.0%
              AEROSPACE -- 0.3%
        100   Cordant Technologies Inc. .....   $     5,656
      2,000   Howmet International Inc.+ ....        40,375
      2,000   Northrop Grumman Corp. ........       105,875
                                                -----------
                                                    151,906
                                                -----------
              AUTOMOTIVE: PARTS AND ACCESSORIES -- 0.4%
     12,000   Federal-Mogul Corp. ...........       200,250
                                                -----------
              AVIATION: PARTS AND SERVICES-- 0.9%
     25,000   Aviall Inc.+ ..................       210,937
     17,000   Fairchild Corp., Cl. A+ .......       115,812
      7,000   Hi-Shear Industries Inc. ......        17,500
     22,000   Kaman Corp., Cl. A ............       214,500
                                                -----------
                                                    558,749
                                                -----------
              BROADCASTING -- 0.2%
      3,000   Liberty Corp. .................       112,500
      1,000   Salem Communications Corp., Cl. A+     11,937
                                                -----------
                                                    124,437
                                                -----------
              BUILDING AND CONSTRUCTION -- 0.8%
     47,000   Robertson-Ceco Corp. ..........       461,187
                                                -----------
              BUSINESS SERVICES -- 12.0%
     20,000   Cendant Corp.+ ................       370,000
      2,580   Fisher Scientific International Inc.+ 114,810
     20,000   National Processing Inc.+ .....       190,000
      2,580   ProcureNet Inc.+ ..............           387
    250,000   U.S. Foodservice+ .............     6,437,500
                                                -----------
                                                  7,112,697
                                                -----------
              COMMUNICATIONS EQUIPMENT -- 0.1%
      5,000   Dynatech Corp.+ ...............        72,188
                                                -----------
              COMPUTER SOFTWARE AND SERVICES -- 0.0%
      1,938   DecisionOne Holdings Corp.+ ...           233
                                                -----------
              CONSUMER PRODUCTS -- 11.9%
     12,000   Carter-Wallace Inc. ...........       225,000
    435,000   General Cigar Holdings Inc.+ ..     6,579,375
     28,442   Syratech Corp.+ ...............       227,536
                                                -----------
                                                  7,031,911
                                                -----------
              DIVERSIFIED INDUSTRIAL -- 0.3%
      6,000   Ampco-Pittsburgh Corp. ........        65,250
     11,000   Katy Industries Inc. ..........       101,063
      4,000   WHX Corp.+ ....................        27,500
                                                -----------
                                                    193,813
                                                -----------


                                                   MARKET
     SHARES                                         VALUE
     ------                                        ------
              ENERGY AND UTILITIES: ELECTRIC -- 1.9%
     55,000   El Paso Electric Co.+ .........   $   570,625
     10,000   Florida Progress Corp. ........       458,750
      5,000   St. Joseph Light & Power Co. ..       101,563
                                                -----------
                                                  1,130,938
                                                -----------
              ENERGY AND UTILITIES: INTEGRATED -- 2.5%
     22,000   Florida Public Utilities Co. ..       288,750
     25,000   LG&E Energy Corp. .............       571,875
     25,000   MCN Energy Group Inc. .........       625,000
        286   Sierra Pacific Resources ......         3,575
                                                -----------
                                                  1,489,200
                                                -----------
              ENERGY AND UTILITIES: NATURAL GAS -- 10.8%
     22,000   AGL Resources Inc. ............       404,250
      3,500   Berkshire Energy Resources ....       126,547
     20,000   Columbia Energy Group .........     1,185,000
     10,000   Eastern Enterprises ...........       598,750
      8,200   EnergyNorth Inc. ..............       478,675
      7,000   Piedmont Natural Gas Co. Inc. .       182,438
     42,000   Southwest Gas Corp. ...........       800,625
      7,000   Valley Resources Inc. .........       161,000
     80,000   WICOR Inc. ....................     2,480,000
                                                -----------
                                                  6,417,285
                                                -----------
              ENERGY AND UTILITIES: WATER -- 9.3%
     15,000   E'Town Corp. ..................       948,750
      6,500   SJW Corp. .....................       760,500
    109,400   United Water Resources Inc. ...     3,801,650
                                                -----------
                                                  5,510,900
                                                -----------
              ENTERTAINMENT -- 0.9%
      8,800   Fisher Companies Inc. .........       550,000
                                                -----------
              EQUIPMENT AND SUPPLIES -- 0.4%
      8,174   Juno Lighting Inc. ............        77,653
     10,000   UCAR International Inc.+ ......       131,875
                                                -----------
                                                    209,528
                                                -----------
              FINANCIAL SERVICES -- 20.5%
      1,500   Allstate Corp. ................        35,719
     32,500   Argonaut Group Inc. ...........       652,031
     50,000   Duff & Phelps Credit Rating Co.     4,984,375
      5,000   Leucadia National Corp. .......       118,750
        562   Markel Corp.+ .................        81,794
      4,000   Pioneer Group Inc.+ ...........        93,000
    150,000   Travelers Property Casualty
               Corp., Cl. A .................     6,187,500
                                                -----------
                                                 12,153,169
                                                -----------


                                        9

<PAGE>

THE GABELLI ABC FUND
PORTFOLIO OF INVESTMENTS (CONTINUED) -- MARCH 31, 2000 (UNAUDITED)
- --------------------------------------------------------------------------------

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

              COMMON STOCKS (CONTINUED)
              FOOD AND BEVERAGE -- 0.4%
     30,000   Advantica Restaurant Group Inc.+  $    45,000
     14,000   Whitman Corp. .................       195,125
                                                -----------
                                                    240,125
                                                -----------
              HEALTH CARE -- 0.4%
      4,500   Life Technologies Inc. ........       225,000
                                                -----------
              HOME FURNISHINGS -- 0.4%
    320,000   Carlyle Industries Inc.+ ......       245,000
      8,000   O'Sullivan Industries Holdings Inc.+    4,640
                                                -----------
                                                    249,640
                                                -----------
              HOTELS AND GAMING -- 1.6%
      2,500   Boca Resorts Inc., Cl. A+ .....        21,406
    100,000   Bristol Hotels & Resorts Inc.+        950,000
                                                -----------
                                                    971,406
                                                -----------
              METALS AND MINING -- 0.0%
     10,000   Royal Oak Mines Inc.+ .........           100
                                                -----------
              REAL ESTATE -- 2.0%
     70,000   Catellus Development Corp.+ ...       971,250
     20,000   Griffin Land & Nurseries Inc.+        220,000
      3,169   HomeFed Corp.+ ................         2,028
                                                -----------
                                                  1,193,278
                                                -----------
              RETAIL -- 1.8%
    120,000   Bruno's Inc.+ .................           120
     13,000   Hannaford Bros. Co. ...........       958,750
      8,000   Lillian Vernon Corp. ..........        76,000
                                                -----------
                                                  1,034,870
                                                -----------
              SATELLITE -- 0.4%
     10,000   COMSAT Corp. ..................       206,250
                                                -----------
              SPECIALTY CHEMICALS -- 0.5%
      9,500   Bush Boake Allen Inc.+ ........       264,219
                                                -----------
              TELECOMMUNICATIONS -- 16.2%
     15,000   Citizens Utilities Co., Cl. B+        245,625
     90,000   Esat Telecom Group plc, ADR+ ..     8,988,750
      9,500   Shenandoah Telecommunications Co.     383,563
      3,000   Telegroup Inc.+ ...............           150
                                                -----------
                                                  9,618,088
                                                -----------
              WIRELESS COMMUNICATIONS -- 0.1%
      1,000   American Tower Corp., Cl. A+ ..        49,375
                                                -----------
              TOTAL COMMON STOCKS ...........    57,420,742
                                                -----------



                                                   MARKET
     SHARES                                         VALUE
     ------                                        ------
              PREFERRED STOCKS -- 1.1%
              DIVERSIFIED INDUSTRIAL -- 0.8%
     11,500   WHX Corp.,
               6.50% Cv. Pfd., Ser. A .......   $   310,500
      6,500   WHX Corp.,
               3.75% Cv. Pfd., Ser. B .......       149,500
                                                -----------
                                                    460,000
                                                -----------
              TELECOMMUNICATIONS -- 0.3%
      3,000   Citizens Utilities Co.,
               5.00% Cv. Pfd. ...............       187,500
                                                -----------
              TOTAL PREFERRED STOCKS                647,500
                                                -----------
    PRINCIPAL
     AMOUNT
    ---------

              CORPORATE BONDS -- 0.2%
              HOTELS AND GAMING -- 0.1%
   $100,000   Hilton Hotels Corp.,
               Sub. Deb. Cv.
               5.00%, 05/15/06 ..............        75,750
                                                -----------
              RETAIL -- 0.0%
    200,000   RDM Sports Group Inc., Cv.
               8.00%, 08/15/03 ..............        21,250
                                                -----------
              TRANSPORTATION -- 0.1%
    850,000   Builders Transport Inc., Cv.
               6.50%, 05/01/11 ..............            85
    140,000   WorldCorp. Inc.,
               Sub. Deb. Cv.
               7.00%, 05/15/04 ..............        44,800
                                                -----------
                                                     44,885
                                                -----------
              TOTAL CORPORATE BONDS .........       141,885
                                                -----------

     SHARES
     ------

              RIGHTS -- 0.0%
              FINANCIAL SERVICES -- 0.0%
        562   Markel Corp. Rights+ ..........         3,373
                                                -----------
              TOTAL INVESTMENTS -- 98.3%
                (Cost $59,869,344) ..........    58,213,500

              OTHER ASSETS AND
                LIABILITIES (NET) -- 1.7% ...     1,014,488
                                                -----------
              NET ASSETS -- 100.0%
                (6,123,751 shares outstanding)  $59,227,988
                                                ===========
  ------------------------
  +     Non-income producing security.
  ADR - American Depositary Receipt.

                                       10

<PAGE>

- --------------------------------------------------------------------------------
                             GABELLI FAMILY OF FUNDS
- --------------------------------------------------------------------------------

GABELLI ASSET FUND--------------------------------------------------------------
Seeks to invest primarily in a diversified portfolio of common stocks selling at
significant  discounts  to  their  private  market  value.  The  Fund's  primary
objective is growth of capital.  (NO-LOAD)
                                        PORTFOLIO MANAGER: MARIO J. GABELLI, CFA

GABELLI GROWTH FUND-------------------------------------------------------------
Seeks to invest  primarily in large cap stocks believed to have  favorable,  yet
undervalued,  prospects for earnings  growth.  The Fund's  primary  objective is
capital appreciation. (NO-LOAD)
                                          PORTFOLIO MANAGER: HOWARD F. WARD, CFA

GABELLI WESTWOOD EQUITY FUND----------------------------------------------------
Seeks to invest primarily in the common stock of seasoned  companies believed to
have proven records and above average  historical  earnings  growth.  The Fund's
primary objective is capital appreciation. (NO-LOAD)
                                               PORTFOLIO MANAGER: SUSAN M. BYRNE

GABELLI SMALL CAP GROWTH FUND---------------------------------------------------
Seeks  to  invest  primarily  in  common  stock  of  smaller  companies  (market
capitalizations  less than $500  million)  believed  to have rapid  revenue  and
earnings growth potential. The Fund's primary objective is capital appreciation.
(NO-LOAD)
                                        PORTFOLIO MANAGER: MARIO J. GABELLI, CFA

GABELLI BLUE CHIP VALUE FUND----------------------------------------------------
Seeks  long-term  growth of capital through  investment  primarily in the common
stocks  of   well-established,   high   quality   companies   that  have  market
capitalizations of greater than $5 billion. (NO-LOAD)
                                         PORTFOLIO MANAGER:  BARBARA MARCIN, CFA

GABELLI WESTWOOD SMALLCAP EQUITY FUND-------------------------------------------
Seeks to invest primarily in smaller  capitalization  equity securities - market
caps of $1 billion or less.  The Fund's primary  objective is long-term  capital
appreciation. (NO-LOAD)
                                            PORTFOLIO MANAGER: LYNDA CALKIN, CFA

GABELLI WESTWOOD INTERMEDIATE BOND FUND-----------------------------------------
Seeks to invest in a diversified portfolio of bonds with various maturities. The
Fund's primary objective is total return. (NO-LOAD)
                                               PORTFOLIO MANAGER: PATRICIA FRAZE

GABELLI EQUITY INCOME FUND------------------------------------------------------
Seeks to invest primarily in equity securities with above market average yields.
The Fund pays quarterly dividends and seeks a high level of total return with an
emphasis on income. (NO-LOAD)
                                        PORTFOLIO MANAGER: MARIO J. GABELLI, CFA

GABELLI WESTWOOD BALANCED FUND--------------------------------------------------
Seeks to invest in a balanced and diversified portfolio of stocks and bonds. The
Fund's  primary  objective  is both  capital  appreciation  and current  income.
(NO-LOAD)
                             PORTFOLIO MANAGERS: SUSAN M. BYRNE & PATRICIA FRAZE

GABELLI WESTWOOD MIGHTY MITES[SERVICE MARK] FUND--------------------------------
Seeks to invest in micro-cap companies that have market  capitalizations of $300
million or less. The Fund's primary objective is long-term capital appreciation.
(NO-LOAD)
                                            TEAM MANAGED: MARIO J. GABELLI, CFA,
                                           MARC J. GABELLI, LAURA K. LINEHAN AND
                                                                 WALTER K. WALSH

GABELLI VALUE FUND--------------------------------------------------------------
Seeks to invest in  securities  of  companies  believed to be  undervalued.  The
Fund's primary objective is long-term capital  appreciation.  MAX. SALES CHARGE:
5 1/2%
                                        PORTFOLIO MANAGER: MARIO J. GABELLI, CFA

GABELLI UTILITIES FUND----------------------------------------------------------
Seeks to provide a high level of total return  through a combination  of capital
appreciation and current income.  (NO-LOAD)
                                         PORTFOLIO MANAGER: TIMOTHY O'BRIEN, CFA

GABELLI ABC FUND----------------------------------------------------------------
Seeks to invest in securities with attractive  opportunities for appreciation or
investment  income.  The Fund's  primary  objective  is total  return in various
market conditions without excessive risk of capital loss. (NO-LOAD)
                                        PORTFOLIO MANAGER: MARIO J. GABELLI, CFA

GABELLI MATHERS FUND------------------------------------------------------------
Seeks  long-term  capital  appreciation  in various  market  conditions  without
excessive risk of capital loss. (NO-LOAD)
                                        PORTFOLIO MANAGER: HENRY VAN DER EB, CFA

GABELLI U.S. TREASURY MONEY MARKET FUND-----------------------------------------
Seeks to invest exclusively in short-term U.S. Treasury  securities.  The Fund's
primary  objective  is to  provide  high  current  income  consistent  with  the
preservation of principal and liquidity.  (NO-LOAD)
                                             PORTFOLIO MANAGER: JUDITH A. RANERI

GABELLI CASH MANAGEMENT SHARES OF
THE TREASURER'S FUND------------------------------------------------------------
Three money market  portfolios  designed to generate  superior  returns  without
compromising  portfolio  safety.  U.S.  Treasury Money Market seeks to invest in
U.S. Treasury bills, notes and bonds. Tax Exempt Money Market seeks to invest in
municipal  securities.  Domestic  Prime  Money  Market  seeks to invest in prime
quality, domestic money market instruments. (NO-LOAD)
                                             PORTFOLIO MANAGER: JUDITH A. RANERI


AN INVESTMENT IN THE ABOVE MONEY MARKET FUNDS IS NEITHER  INSURED NOR GUARANTEED
BY THE FEDERAL DEPOSIT INSURANCE CORPORATION OR ANY GOVERNMENT AGENCY.  ALTHOUGH
THE FUNDS SEEK TO PRESERVE THE VALUE OF YOUR  INVESTMENT AT $1.00 PER SHARE,  IT
IS POSSIBLE TO LOSE MONEY BY INVESTING IN THE FUNDS.

GLOBAL SERIES

  GABELLI GLOBAL TELECOMMUNICATIONS FUND
  Seeks  to  invest  in  telecommunications  companies  throughout  the  world -
  targeting  undervalued  companies with strong earnings and cash flow dynamics.
  The Fund's primary objective is capital appreciation. (NO-LOAD)
                                            TEAM MANAGED: MARIO J. GABELLI, CFA,
                                           MARC J. GABELLI AND IVAN ARTEAGA, CFA

  GABELLI  GLOBAL  CONVERTIBLE  SECURITIES  FUND
  Seeks  to  invest   principally  in  bonds  and  preferred  stocks  which  are
  convertible  into common stock of foreign and domestic  companies.  The Fund's
  primary  objective is total return through a combination of current income and
  capital appreciation. (NO-LOAD)
                                                 PORTFOLIO MANAGER: HART WOODSON

  GABELLI GLOBAL GROWTH FUND
  Seeks capital appreciation  through a disciplined  investment program focusing
  on the globalization and  interactivity of the world's  marketplace.  The Fund
  invests in  companies  at the  forefront  of  accelerated  growth.  The Fund's
  primary objective is capital appreciation. (NO-LOAD)
                                              PORTFOLIO MANAGER: MARC J. GABELLI

  GABELLI GLOBAL OPPORTUNITY FUND
  Seeks to  invest in common  stock of  companies  which  have  rapid  growth in
  revenues and earnings and potential for above average capital  appreciation or
  are  undervalued.  The  Fund's  primary  objective  is  capital  appreciation.
  (NO-LOAD)
                                             PORTFOLIO MANAGERS: MARC J. GABELLI
                                                                AND CAESAR BRYAN

GABELLI GOLD FUND---------------------------------------------------------------
Seeks to invest in a global  portfolio of equity  securities  of gold mining and
related  companies.  The Fund's  objective  is long-term  capital  appreciation.
Investment in gold stocks is considered speculative and is affected by a variety
of world-wide economic, financial and political factors. (NO-LOAD)
                                                 PORTFOLIO MANAGER: CAESAR BRYAN

GABELLI INTERNATIONAL GROWTH FUND-----------------------------------------------
Seeks to invest in the equity  securities  of  foreign  issuers  with  long-term
capital   appreciation    potential.    The   Fund   offers   investors   global
diversification. (NO-LOAD)
                                                PORTFOLIO MANAGER:  CAESAR BRYAN

THE SIX FUNDS  ABOVE  INVEST IN  FOREIGN  SECURITIES  WHICH  INVOLVES  RISKS NOT
ORDINARILY  ASSOCIATED WITH INVESTMENTS IN DOMESTIC ISSUES,  INCLUDING  CURRENCY
FLUCTUATION,   ECONOMIC  AND  POLITICAL   RISKS.  THE  FUNDS  LISTED  ABOVE  ARE
DISTRIBUTED BY GABELLI & COMPANY, INC.
- --------------------------------------------------------------------------------

           TO RECEIVE A PROSPECTUS, CALL 1-800-GABELLI (422-3554). THE
            PROSPECTUS GIVES A MORE COMPLETE DESCRIPTION OF THE FUND,
           INCLUDING FEES AND EXPENSES. READ THE PROSPECTUS CAREFULLY
                        BEFORE YOU INVEST OR SEND MONEY.
                              VISIT OUR WEBSITE AT:
                                 WWW.GABELLI.COM
                                    OR, CALL:
                                  1-800-GABELLI
                  1-800-422-3554 [BULLET] 914-921-5100 [BULLET]
                  FAX: 914-921-5118 [BULLET] [email protected]
                    ONE CORPORATE CENTER, RYE, NEW YORK 10580
<PAGE>

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

                               BOARD OF DIRECTORS
             Mario J. Gabelli, CFA           Karl Otto Pohl
             CHAIRMAN AND CHIEF              FORMER PRESIDENT
             INVESTMENT OFFICER              DEUTSCHE BUNDESBANK
             GABELLI ASSET MANAGEMENT INC.

             Anthony J. Colavita             Werner J. Roeder, MD
             ATTORNEY-AT-LAW                 MEDICAL DIRECTOR
             ANTHONY J. COLAVITA, P.C.       LAWRENCE HOSPITAL

             Vincent D. Enright
             FORMER SENIOR VICE PRESIDENT
             AND CHIEF FINANCIAL OFFICER
             KEYSPAN ENERGY CORP.

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

             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 ABC Fund. It is not authorized for distribution to prospective investors
unless preceded or accompanied by an effective prospectus.
- --------------------------------------------------------------------------------
GAB408Q100SR


                                             [Photo of Mario J. Gabelli omitted]

THE
GABELLI
ABC
FUND

[Graphic of ABC blocks omitted]


                                                            FIRST QUARTER REPORT
                                                                  MARCH 31, 2000


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