GABELLI GLOBAL SERIES FUNDS INC
N-30D, 2000-08-29
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[GRAPHIC OF FLAGS OMITTED]

THE GABELLI GLOBAL
CONVERTIBLE SECURITIES FUND

SEMI-ANNUAL REPORT -- JUNE 30, 2000

                                                 [PHOTO OF HART WOODSON OMITTED]

                                                                    HART WOODSON

TO OUR SHAREHOLDERS,

      During  the  second  quarter  of  2000,  the  Gabelli  Global  Convertible
Securities  Fund (the "Fund")  suffered as rising  interest  rates and inflation
fears caused a downturn in global equity valuations. As expected, companies with
weak  balance  sheets  generating  negative  cash flow  suffered  the most.  For
example,  the "Inter@ctive  Week" Internet Index fell 20.29% during the quarter,
while the technology heavy NASDAQ  Composite Index (NASDAQ)  declined by 13.27%.
Unfortunately,  the damage was not  limited  to the  United  States,  as Japan's
Nikkei 225 Index fell 17.08%.  Europe fared  better,  as the Bloomberg 500 Index
only slipped  4.55%.  As  previously  cautioned,  downside  volatility  is to be
expected as the global economy transitions from  liquidity-induced  growth (post
the Russian crisis and Y2K fears) to a more sustainable growth path.

      In the U.S.,  we believe  that the Federal  Reserve (the "Fed") is doing a
good job in slowing the economy without  jeopardizing  expansion.  We expect the
recoveries in Japan and Europe to continue. As for stock selection,  we have not
altered  our  investment  philosophy.  We  are  long-term  investors  driven  by
fundamentals.  We look for value,  with a catalyst to unlock  that  value,  on a
global basis.  The major macro  underpinnings  of the bull market remain intact:
economics,  earnings,  liquidity and consolidation.  Your portfolio continues to
benefit from these trends, as evidenced by Vivendi's  acquisition of Seagram and
Texas Instruments'  purchase of Burr-Brown.  We believe a  well-diversified  (by
geography and sector)  portfolio of convertible  securities  offers investors an
attractive total rate of return investment vehicle.

INVESTMENT PERFORMANCE

      For the second  quarter  ended June 30, 2000,  the Fund's Class AAA Shares
declined 10.16%. The Warburg Dillon Read Global Convertible Index, Merrill Lynch
Global Bond Index and Morgan Stanley Capital  International  World Free Index of
global equity markets returned (6.13)%, 0.49%, and (3.81)%,  respectively,  over
the same period. Each index is an unmanaged indicator of investment performance.
The Fund was up 27.54% over the trailing twelve-month period. The Warburg Dillon
Read Global

<PAGE>

<TABLE>
<CAPTION>

INVESTMENT RESULTS (CLASS AAA SHARES)(a)
--------------------------------------------------------------------------------------------------------------
                                                                       Quarter
                                                  -----------------------------------------
                                                   1st         2nd         3rd        4th          Year
                                                  ------      ------       ---        ---          ----
<S>                                               <C>         <C>         <C>         <C>           <C>

 2000:    Net Asset Value .....................   $15.04      $13.21        --          --           --
          Total Return ........................    10.6%      (10.2)%       --          --           --
--------------------------------------------------------------------------------------------------------------
 1999:    Net Asset Value .....................   $10.89      $11.91      $12.71      $13.88        $13.88
          Total Return ........................     7.6%        9.4%        6.7%       20.3%         51.1%
--------------------------------------------------------------------------------------------------------------
 1998:    Net Asset Value .....................   $10.43      $10.36       $9.09      $10.12        $10.12
          Total Return ........................    11.1%       (0.7)%     (12.3)%      12.2%          8.6%
--------------------------------------------------------------------------------------------------------------
 1997:    Net Asset Value .....................   $10.27      $10.98      $11.15       $9.39         $9.39
          Total Return ........................     0.9%        6.9%        1.5%       (6.1)%         2.8%
--------------------------------------------------------------------------------------------------------------
 1996:    Net Asset Value .....................   $11.34      $11.55      $11.41      $10.18        $10.18
          Total Return ........................     5.1%        1.9%       (1.2)%      (0.3)%         5.5%
--------------------------------------------------------------------------------------------------------------
 1995:    Net Asset Value .....................   $10.09      $10.64      $11.05      $10.79        $10.79
          Total Return ........................     1.6%        5.5%        3.9%        1.2%         12.6%
--------------------------------------------------------------------------------------------------------------
 1994:    Net Asset Value .....................   $10.38      $10.37      $10.64       $9.93         $9.93
          Total Return ........................     3.8%(b)    (0.1)%       2.6%       (5.2)%         0.9%(b)
--------------------------------------------------------------------------------------------------------------
</TABLE>


                    Dividend History
--------------------------------------------------------
Payment (ex) Date    Rate Per Share   Reinvestment Price
-----------------    --------------   ------------------
December 27, 1999        $1.390             $13.67
December 28, 1998        $0.080             $ 9.96
December 30, 1997        $1.070             $ 9.33
December 31, 1996        $1.200             $10.18
December 29, 1995        $0.393             $10.79
December 30, 1994        $0.160             $ 9.93

----------------------------------------------------------
        Average Annual Returns (Class AAA Shares)
        -----------------------------------------
                     June 30, 2000 (a)
                     -----------------

  1 Year .................................  27.54%
  5 Year .................................  13.20%
  Life of Fund (b) .......................  11.50%
----------------------------------------------------------

(a) Total returns and average  annual  returns for the Class AAA Shares  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 February 3, 1994. Note:  Investing in foreign  securities  involves risks not
ordinarily  associated with investments in domestic issues,  including  currency
fluctuation, economic and political risks.
--------------------------------------------------------------------------------

Convertible  Index,  Merrill Lynch Global Bond Index and Morgan Stanley  Capital
International  World Free Index had total returns of 25.38%,  2.91%, and 12.37%,
respectively, over the same twelve-month period.

      For the  five-year  period  ended June 30,  2000,  the Fund's total return
averaged 13.20% annually,  versus average annual total returns of 12.83%, 3.95%,
and 16.62% for the Warburg Dillon Read Global Convertible  Index,  Merrill Lynch
Global Bond Index and Morgan  Stanley  Capital  International  World Free Index,
respectively.

      Since  inception on February 3, 1994 through June 30, 2000, the Fund had a
cumulative total return of 100.93%, which equates to an average annual return of
11.50%.

                                        2
<PAGE>

MULTI-CLASS SHARES

      The Gabelli Global Series Funds, Inc. began offering additional classes of
Fund shares in March 2000.  The  existing  shares  remain  no-load and have been
redesignated  as "Class  AAA"  Shares.  Class A,  Class B and Class C Shares are
targeted  to  the  needs  of  investors  who  seek  advice   through   financial
consultants.  For the second  quarter  ended June 30, 2000,  The Gabelli  Global
Convertible  Securities  Fund  Class A Shares  had a total  return  of  (10.16)%
(excluding the effect of the 5.75% front-end sales charge). (Class B and Class C
Shares have not been issued as of June 30,  2000).  The Class A Shares ended the
second quarter with a net asset value of $13.21.

OUR INVESTMENT OBJECTIVE

      The Fund's objective is to obtain a high rate of total return by investing
in global  convertible  securities.  We expect to achieve a competitive  rate of
return by investing primarily in coupon paying convertible securities which meet
our selective investment criteria.

OUR APPROACH

      We weigh both  country-specific and  company-specific  factors to make our
investment  decisions.  Country-specific  factors include  political  stability,
economic  growth,  inflation  and  trends  in  interest  rates.  With  regard to
companies,  we seek firms which are  undervalued in relation to their  long-term
potential  value.  We then look for some dynamic in the country or company which
can unlock this value. In the case of global telecommunications,  the dynamic is
the privatization of state-owned monopolies.  In developing countries, it is the
need to provide the  infrastructure  for growth. In Japan, it is the change from
an industrial to a consumer-oriented economy. In commodities, it is the increase
in industrial demand.

GLOBAL ALLOCATION

      The accompanying  chart presents the Fund's holdings by geographic  region
as of June 30,  2000.  The  geographic  allocation  will change based on current
global market conditions.  Countries and/or regions represented in the chart and
below may or may not be included in the Fund's future portfolio.

[GRAPHIC OMITTED]

EDGAR REPRESENTATION OF DATA POINTS USED IN PRINT GRAPHIC AS FOLLOWS:

     HOLDINGS BY GEOGRAPHIC REGION - 6/30/00

         United States             39.1%
         Europe                    28.8%
         Japan                     27.1%
         Latin America              2.4%
         Canada                     1.9%
         Asia/Pacific Rim           0.7%


WHAT ARE GLOBAL CONVERTIBLE SECURITIES?

      Global convertible  securities are bonds, preferred shares and warrants of
domestic or foreign issuers which may be converted into a fixed number of shares
of the underlying company.  Convertibles are hybrid securities which combine the
capital appreciation potential of equities with the higher yield of fixed income
instruments. They can be thought of as a straight bond together with an embedded
call option (or warrant) on the underlying equity.



                                        3
<PAGE>

WHAT ARE THE BENEFITS OF GLOBAL CONVERTIBLE SECURITIES?

      Reduced volatility is foremost. Investing in foreign equity markets can be
rewarding  but  volatile.  Our  goal is to earn a  high,  risk-adjusted  rate of
return.  Due to its fixed income  characteristics,  a convertible  security will
provide more stability than its underlying  common stock.  In the current market
environment,   the  Gabelli  Global  Convertible  Securities  Fund  provides  an
attractive alternative by combining the capital appreciation potential of global
equity investing with the higher current income usually associated with bonds.

COMMENTARY

UNITED STATES

      After raising  interest  rates 1.75% since May of 1999, the effects of the
Fed's  tightening  are  beginning  to take hold.  The  growth in Gross  Domestic
Product  (GDP)  slowed to 5.4% in the first  quarter of 2000 from the  breakneck
speed of 7.3% in the final quarter last year.  Inflation remains a concern,  but
we may have already seen the peak in energy  prices,  as OPEC agreed to increase
production  quotas  at the  end of  June.  As the  Fed  reaches  the  end of its
tightening  cycle, we expect the economy to continue to slow in the second half.
What does this mean for global convertible investors?

      As the  economy  slows,  short-term  interest  rates  are  likely to fall,
benefiting  the fixed income  component of  convertibles.  Meanwhile,  the macro
underpinnings  of the equity market remain intact.  Liquidity is strong.  During
the first five months of 2000,  inflows into equity  mutual  funds  totaled $188
billion.  This was equal to the total amount invested in all of 1999. Merger and
acquisition activity continued to surge, with $170 billion reported in the first
four  months  of the  year.  However,  the  current  administration's  increased
vigilance to scrutinize deals (i.e. WorldCom/Sprint) could dampen this trend. In
this context, a Bush victory in November could be a plus for the market.

      With the economy  slowing,  the main  concern  will be  earnings.  After a
strong first  quarter,  operating  earnings of the Standard & Poor's ("S&P") 500
Index are expected to grow in the low double  digits.  We favor  companies  with
steady  growth in revenues  and cash flow  because  shortfalls  are likely to be
severely punished.

EUROPE

      During  the  first  quarter,  GDP  grew at an  annualized  rate of 3.0% in
Euroland. Like the Fed, the European Central Bank (ECB) is keeping a close watch
on  inflation.  Producer  prices rose 0.8% in May and the ECB is likely to raise
rates again to avoid an overheating economy.  German retail sales were strong in
April and  industrial  goods orders rose above  expectations  in May. In France,
both private  consumption  and  investment  are driving the economy.  Merger and
acquisition  activity in Europe is outpacing the United States.  The Euro, after
reaching  a low of $0.88,  is  showing  signs of  recovery  as growth  rates and
interest rate differentials between Europe and the U.S. narrow.

                                        4
<PAGE>

JAPAN

      The Tankan survey of large manufacturers' sentiment about the direction of
the  economy  rose to +3 in June  from -9 in March.  This is the first  positive
reading on the index since  September  1997.  During the first quarter,  exports
helped increase  industrial  production by 6.5%, the fastest rate since the late
1980's.  This year  exports have grown three times  faster than  imports.  These
positive signs are improving consumer confidence.

      However,  the economy  continues to face  problems.  Deficit  spending has
raised the overall debt level to 125% of GDP,  one of the highest  ratios in the
world.   Consequently  Fitch,  the  credit  rating  agency,  downgraded  Japan's
long-term  local  currency  rating  from  AAA  to  AA+.  Also  troubling  is the
government's  proposal to bail out the failing department store chain Sogo. Such
proposals do not  encourage  the tough  restructuring  measures  required by the
economy. Nevertheless, the corporate culture is changing. DuPont, the U.S. based
chemical  producer,  announced that it was looking to make acquisitions in Japan
as hostile takeovers become more frequent.

LET'S TALK CONVERTS

BURR-BROWN CORP.  (4.25%,  02/15/07) is a global  developer,  manufacturer,  and
marketer of analog and mixed signal  integrated  circuits.  The company produces
high  precision  data  converters and other signal  processing  components.  The
company is currently in the process of being acquired by Texas  Instruments (TXN
- $68.6875 - NYSE),  the world's leader in digital signal  processors and analog
semiconductors, for $7.6 billion in stock.

With the stock at $89.375,  the convertible  trades at 173.875% on a 12% premium
to parity and enjoys a 2.4% yield advantage over the common stock.

LSI LOGIC CORP.  (LSI,  4.00%,  02/15/05) is a  semiconductor  company  based in
California  that supplies  communication  chips for wireless,  data  networking,
broadband,  and digital set-top box applications.  Its revenues grew 39% in 1999
due to the tremendous  growth in demand for greater  bandwidth in data and voice
devices.  LSI has made large gains with its storage area network  (SAN)  systems
that provide new methods for connection and sharing among multiple servers.  The
company  looks  forward to the U.S.  release of Sony's  Playstation 2 later this
summer, because every unit will contain a LSI chip.

With the stock at $53.50,  the bond  trades at  105.375%  on a 32% premium and a
3.80% yield advantage.

NEC CORP. (1.90%,  03/31/04) is a one hundred year-old Tokyo-based  manufacturer
and  marketer  of a wide  range  of  computers  and  electrical  components  and
equipment.  It also produces cellular phones,  communication  systems, and other
telecommunication  devices.  NEC is the second  largest  worldwide  supplier  of
computer  chips.  In the fiscal year ended March 31, 2000,  the company  began a
substantial  turnaround,  earning  10.4 billion yen (US $99 million) on sales of
4.9 trillion yen (US $48 billion).

                                        5
<PAGE>

The convertible, rated BBB by Mikuni, trades at 180.25% with the common stock at
3,400 Japanese Yen,  which is a 5.2% premium.  With a current yield of 1.0%, the
bond enjoys a 0.87% yield advantage over the common.

NIHON DEMPA KOGYO CO. LTD.  (DEMPA KOGY DEMPA)  (0.90%,  09/28/01) is a Japanese
company that manufactures synthetic quartz and quartz-related products including
filters, oscillators, and resonators for electronic applications.  The company's
revenues grew by 20% in the fiscal year ended March 31, 2000 to 56.5 billion yen
(US $540 million) while operating profits rose by 162%.

The bond yields 0.32% more than the common stock,  which is currently  priced at
5,500  yen.  The  convertible  is  "deep-in-the  money",  trading at a parity of
156.50%.

PORTUGAL  TELECOM SA (1.50%,  06/07/04)  provides  the  majority of domestic and
international  fixed telephone services in Portugal,  along with a growing share
of cellular,  cable TV, and multimedia  services.  The company  recently  joined
forces with Commerce One Inc., the leading e-commerce  company,  to create a new
business-to-business  electronic  marketplace (PT Electronic  Marketplace).  The
company has also acquired  control of wireless  phone services in Brazil (Telesp
Cellular) and Morocco, where there is significant demand for wireless products.

The convertible,  which is rated A+ by Standard and Poor's, trades at 120.50% on
a 10% premium with the stock at 11.75 euros.

SWISS LIFE FINANCE LTD.  (2.00%,  05/20/03) is convertible  into shares of Glaxo
Wellcome.  Glaxo Wellcome (GLX - $57.8125 - NYSE),  a U.K.  based company,  is a
leading  producer of  pharmaceuticals  for a variety of health  areas  including
respiratory  ailments  (which  make  up  30%  of  sales),   epilepsy,  HIV,  and
indigestion.  In 1981, the company  introduced one of its most successful drugs,
Zantac (for  heartburn),  which boosted the company to the top of the anti-ulcer
drug  market  in the US.  The  company  looks  for large  cost  savings  when it
completes its announced merger with rival  SmithKline  Beecham (SBH - $65.1875 -
NYSE) later this summer.

With the stock at 19.25 British pounds,  the convertible  trades at 100.50% on a
28% premium and 2% current yield.

TELEFONOS DE MEXICO SA (4.25%,  6/15/04),  also known as Telmex, provides a wide
range of telecommunication  services,  from local and long distance to cellular,
throughout  Mexico.   Telmex  also  provides  other  related   telecommunication
services,  such as  directory  services  and Internet  access.  In fact,  Telmex
controls  about  75% of the  Mexican  long  distance  market  and just  launched
T1msn.com, a Spanish-language Internet portal with Microsoft.

This  bond  trades  at  128.25%  with  the  stock at  $53.75,  which is a 13.24%
conversion premium with a 1.8% yield advantage.



                                        6
<PAGE>

UNITED NEWS AND MEDIA PLC (6.125%, 12/03/03) is a London based media company. It
has  operations  in  broadcasting  and  entertainment,  business  services,  and
consumer  publishing  in over 20  countries.  The group's  publishing  offerings
include newspapers, business magazines,  exhibitions and market research. United
is in the process of selling  Miller  Freeman,  the world's  largest  trade show
group,  and is in  talks  to  merge  with  Carlton  Communications,  a rival  UK
broadcaster. United has also expanded its Internet holdings.

This bond yields  2.20% more than the common stock and trades at 133.0% with the
stock at 9.24 British pounds, an 8.67% premium to parity.

VIVENDI (1.25%,  01/01/04) is a French based conglomerate that provides services
in many  different  areas.  It is the  world's  largest  water  company  and has
sizeable  construction,  waste  management,   transportation,   and  electricity
services.  Vivendi began expanding into the  entertainment and wireless industry
with the acquisition of Cedant Software in 1999, and the announcement of a joint
venture  with  Vodafone in 2000 to develop an Internet  portal  (Vizzavi).  Most
recently,  Vivendi has  proposed a $41  billion  dollar  merger with  Seagram to
create Vivendi  Universal.  The main focus of the deal is to provide  additional
content (i.e. music) for Vizzavi.

The Vivendi 1.25% convertible due 2004 is rated BBB and trades at 319.5 euros on
a 13% premium.

Vivendi Environment's 1.50% convertible,  due in 2005, trades at 322 euros (i.e.
118.10%), with the stock at 92.50 euros on a 14% premium. This convertible gives
the  holder  a  priority  subscription  right  and  a 5%  discount  for  Vivendi
Environment's initial public offering expected in July.

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 brokerage firms.

WWW.GABELLI.COM

      Please visit us on the  Internet.  Our homepage 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].

CONCLUSION

     The  second  quarter  was  difficult  for  global  convertible   investors.
Nevertheless,  we believe the general macro conditions  remain  constrictive and
are likely to improve  (especially in Japan and Europe).  In the year ahead,  we
will remain focused on company fundamentals, seeking the world's most compelling
investment  opportunities.  We  thank  you for  your  continued  support  of our
investment philosophy.

                                        7
<PAGE>

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

                                                    Sincerely,

                                                    /S/ SIGNATURE OMITTED

                                                    A. HARTSWELL WOODSON, III
                                                    Portfolio Manager

July 14, 2000

--------------------------------------------------------------------------------
                 MONTHLY DISTRIBUTIONS -- $0.10 PER SHARE
                 ----------------------------------------
Reinvestment Date   Reinvestment Price   Reinvestment Date  Reinvestment Price
--------------------------------------------------------------------------------
January 27, 2000        $14.05            April 26, 2000          $13.64
February 25, 2000       $15.28            May 26, 2000            $12.62
March 29, 2000          $15.26            June 28, 2000           $13.38



---------------------------------------------------------------------
                          TOP TEN HOLDINGS
                            JUNE 30, 2000
                            -------------
Clear Channel Communications Inc.     Toho Co., Ltd.
NEC Corp.                             Comverse Technology Inc.
United News & Media plc               Level One Communications Inc.
Swiss Life Finance Ltd.               Daiwa Securities Group Inc.
Nihon Denpa Kogyo Co. Ltd.,           Telefonos de Mexico SA
  (Dempa Kogy Dempa)
---------------------------------------------------------------------

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 GLOBAL CONVERTIBLE SECURITIES FUND
PORTFOLIO OF INVESTMENTS -- JUNE 30, 2000 (UNAUDITED)
--------------------------------------------------------------------------------

 PRINCIPAL                                                              MARKET
  AMOUNT                                                 COST           VALUE
 ---------                                               ----           -----


               CORPORATE BONDS -- 80.1%
               AUTOMOTIVE: PARTS AND ACCESSORIES -- 0.4%
$   125,000    Standard Motor Products Inc.,
                 Sub. Deb. Cv.
                 6.75%, 07/15/09 .................    $  125,000    $    64,687
                                                       ---------      ---------
               BROADCASTING -- 6.7%
    700,000(c) Canal Plus / Mediaset,
                 Sub. Deb. Cv.
                 3.50%, 04/01/02 .................       125,372        365,838
    400,000    Clear Channel
                 Communications Inc.,
                 2.63%, 04/01/03 .................       506,667        517,500
 15,000,000(b) Tokyo Broadcasting
                 System Inc.,
                 Sub. Deb. Cv.
                 1.80%, 03/31/03 .................       171,187        270,041
                                                       ---------      ---------
                                                         803,226      1,153,379
                                                       ---------      ---------
               BUSINESS SERVICES -- 3.7%
    100,000    Omnicom Group Inc.,
                 2.25%, 01/06/13 .................       154,491        183,750
    131,976(d) Vivendi, Cv.
                 1.25%, 01/01/04 .................       148,513        141,729
    284,550(d) Vivendi Environment, Cv.
                 1.50%, 01/01/05 .................       307,560        316,038
                                                       ---------      ---------
                                                         610,564        641,517
                                                       ---------      ---------
               COMMUNICATIONS EQUIPMENT -- 1.9%
    300,000    LSI Logic Corp., Cv.
                 4.00%, 02/15/05 .................       358,402        319,125
                                                       ---------      ---------
               COMPUTER SOFTWARE AND SERVICES -- 2.5%
 22,000,000(b) Capcom Co. Ltd., Cv.
                 1.00%, 09/30/05 .................       234,826        240,539
      8,000    NBC Internet Inc.,
                 Sub. Deb. Cv.
                 7.25%, 02/15/03 .................       490,725        186,000
                                                       ---------      ---------
                                                         725,551        426,539
                                                       ---------      ---------
               DIVERSIFIED INDUSTRIAL -- 5.2%
    100,000    Comverse Technology Inc., Cv.
                 4.50%, 07/01/05 .................       194,432        431,000
    200,000(d) Elektrim Finance,
                 Sub. Deb. Cv.
                 3.75%, 07/02/04 .................       208,680        181,402
 20,000,000(b) Nippon Ceramic, Cv.
                 1.00%, 12/30/02 .................       272,628        280,880
                                                       ---------      ---------
                                                         675,740        893,282
                                                       ---------      ---------

 PRINCIPAL                                                              MARKET
  AMOUNT                                                 COST           VALUE
 ---------                                               ----           -----
               ELECTRONICS -- 15.8%
$   200,000    Burr-Brown Corp.
                 Sub. Deb. Cv.
                 4.25%, 02/15/07 (a) .............    $  262,605    $   337,500
    100,000    Level One Communications Inc.,
                 4.00%, 09/01/04 .................       195,363        423,250
 30,000,000(b) NEC Corp., Cv.
                 1.90%, 03/31/04 .................       349,660        503,040
 30,000,000(b) Nihon Denpa Kogyo Co. Ltd.
                 (Dempa Kogy Dempa),
                 0.90%, 09/28/01 .................       314,514        442,528
               Sanyo Electric Co. Ltd., Cv.
 12,000,000(b)   1.70%, 11/29/02 .................       149,937        184,929
 20,000,000(b)   1.60%, 11/30/04 .................       228,275        231,868
 10,000,000(b) Sony Corp., Sub. Deb. Cv.
                 1.40%, 03/31/05 .................       242,195        236,109
    200,000    STMicroelectronics NV,
                 Zero Coupon, 09/22/09 ...........       211,453        343,250
                                                       ---------      ---------
                                                       1,954,002      2,702,474
                                                       ---------      ---------
               ENERGY AND UTILITIES -- 2.8%
    251,460(d) Belgelectric Finance BV, Cv.
                 1.50%, 08/04/04 .................       255,801        264,943
    110,000    Devon Energy Corp.,
                 4.95%, 08/15/08 .................       117,624        105,875
    100,000    Diamond Offshore Drilling Inc.,
                 Sub. Deb. Cv.
                 3.75%, 02/15/07 .................       106,843        104,750
                                                       ---------      ---------
                                                         480,268        475,568
                                                       ---------      ---------
               ENTERTAINMENT -- 2.5%
 35,000,000(b) Toho Co. Ltd.,
                 Sub. Deb. Cv.
                 0.90%, 08/31/04 .................       412,791        436,448
                                                       ---------      ---------
               EQUIPMENT AND SUPPLIES -- 5.8%
    150,000    Antec Corp., Sub. Deb. Cv.
                 4.50%, 05/15/03 .................       189,451        255,750
 30,000,000(b) Sato Corp.,
                 Sub. Deb. Cv.
                 0.55%, 09/30/03 .................       348,755        359,112
 20,000,000(b) THK Co. Ltd.,
                 0.30%, 09/30/03 .................       217,498        377,021
                                                       ---------      ---------
                                                         755,704        991,883
                                                       ---------      ---------
               FINANCIAL SERVICES -- 12.4%
    250,000    Cregem Finance NV,
                 Sub. Deb. Cv.
                 2.75%, 01/06/04 .................       280,653        304,375
 30,000,000(b) Daiwa Securities Group Inc.,
                 Sub. Deb. Cv.
                 0.50%, 09/29/06 .................       335,214        418,493

                 See accompanying notes to financial statements.

                                        9
<PAGE>

THE GABELLI GLOBAL CONVERTIBLE SECURITIES FUND
PORTFOLIO OF INVESTMENTS (CONTINUED) -- JUNE 30, 2000 (UNAUDITED)
--------------------------------------------------------------------------------

 PRINCIPAL                                                              MARKET
  AMOUNT                                                 COST           VALUE
 ---------                                               ----           -----

               CORPORATE BONDS (CONTINUED)
               FINANCIAL SERVICES (CONTINUED)
    200,000(d) Deutsche Bank Finance NV,
                 Sub. Deb. Cv.
                 2.00%, 12/22/03 .................    $  215,977    $   216,012
    125,775(d) Finaxa, Sub. Deb. Cv.
                 3.00%, 01/01/07 .................       203,217        239,781
     99,994(d) Finmeccanica SpA, Cv.
                 2.00%, 06/08/05(a) ..............        94,589         94,161
    700,000(d) Groupe Bruxelles Lambert SA,
                 Sub. Deb. Cv.
                 2.50%, 07/09/03 .................       383,405        363,220
$   500,000    Swiss Life Finance Ltd., Cv.
                 2.00%, 05/20/03 .................       490,740        496,250
                                                      ----------    -----------
                                                       2,003,795      2,132,292
                                                      ----------    -----------
               FOOD AND BEVERAGE -- 1.8%
 10,000,000(b) Takara Shuzo Co.,
                 Sub. Deb. Cv.
                 0.90%, 03/31/03 .................       302,394        311,042
                                                      ----------    -----------
               HEALTH CARE -- 3.4%
    200,000    Centocor Inc., Sub. Deb. Cv.
                 4.75%, 02/15/05 .................       270,516        270,750
 20,000,000(b) Yamanouchi Pharmaceutical
                 Co. Ltd., Cv.
                 1.50%, 12/31/02 .................       285,406        311,042
                                                      ----------    -----------
                                                         555,922        581,792
                                                      ----------    -----------
               PUBLISHING -- 5.2%
    100,000(e)   Daily Mail & General Trust plc,
                 2.50%, 10/05/04 ...................     166,199        199,548
    250,000    Medya Holding, Sub. Deb. Cv.
                 10.00%, 06/28/01 ................       249,902        188,750
    250,000(e) United News & Media plc,
                 Sub. Deb. Cv.
                 6.13%, 12/03/03 .................       454,692        501,214
                                                      ----------    -----------
                                                         870,793        889,512
                                                      ----------    -----------
               TELECOMMUNICATIONS -- 8.1%
    250,000    Bell Atlantic Financial, Cv.
                 4.25%, 09/15/05 .................       261,016        308,437
    350,000(d) Portugal Telecom International
                 Finance, Sub. Deb. Cv.
                 1.50%, 06/07/04 .................       409,219        398,489
    125,000    Telefonica Europe BV,
                 Sub. Deb. Cv.
                 2.00%, 07/15/02 .................       174,341        273,821
    300,000    Telefonos de Mexico SA,
                 4.25%, 06/15/04 .................       365,786        402,375
                                                      ----------    -----------
                                                       1,210,362      1,383,122
                                                      ----------    -----------

 PRINCIPAL                                                              MARKET
  AMOUNT                                                 COST           VALUE
 ---------                                               ----           -----

               WIRELESS COMMUNICATIONS -- 1.9%
  $ 550,000    United States Cellular Corp.,
                 Zero Coupon, 06/15/15 ...........    $  328,347    $   328,625
                                                      ----------    -----------
               TOTAL CORPORATE BONDS                  12,172,861     13,731,287
                                                      ----------    -----------
    SHARES
   -------
               PREFERRED STOCKS -- 17.5%
               BROADCASTING -- 1.4%
      4,000    Emmis Communications Corp.,
                 6.25% Pfd., Ser. A+ .............       247,500        232,000
                                                      ----------    -----------
               BUSINESS SERVICES -- 1.5%
      4,000    Amdocs Ltd.,
                 6.75% Cv. Pfd. ..................       133,700        252,500
                                                      ----------    -----------
               CABLE -- 3.0%
      6,000    MediaOne Group Inc.,
                 7.00% Cv. Pfd. ..................       241,050        243,000
      4,500    UnitedGlobalCom Inc.,
                 7.00% Cv. Pfd. (a) ..............       265,125        270,563
                                                      ----------    -----------
                                                         506,175        513,563
                                                      ----------    -----------
               CONSUMER SERVICES -- 0.5%
      4,000    Carriage Services Inc.,
                 7.00% Cv. Pfd. (a) ..............       200,000         94,000
                                                      ----------    -----------
               DIVERSIFIED INDUSTRIAL -- 1.6%
      5,000    Titan Capital Trust,
                 5.75% Cv. Pfd. (a) ..............       250,000        273,750
                                                      ----------    -----------
               ENERGY AND UTILITIES -- 1.2%
        300    EVI Inc., 5.00% Cv. Pfd. ..........         9,413         13,800
      4,000    EVI Inc., 5.00% Cv. Pfd. (a) ......       200,000        184,000
                                                      ----------    -----------
                                                         209,413        197,800
                                                      ----------    -----------
               ENTERTAINMENT -- 2.2%
      6,000    Seagram Co.,
                 7.50% Cv. Pfd. ..................       314,912        322,500
      2,000    Village Roadshow Ltd.,
                 6.50% Cv. Pfd. ..................        85,000         55,625
                                                      ----------    -----------
                                                         399,912        378,125
                                                      ----------    -----------
               PAPER AND FOREST PRODUCTS -- 0.4%
      2,000    Amcor Ltd.,
                 7.25% Cv. Pfd. ..................        94,000         74,000
                                                      ----------    -----------
               PUBLISHING -- 2.0%
     10,000    Reader's Digest Association
                 Inc., $1.9336 Cv. Pfd. ..........       304,219        350,000
                                                      ----------    -----------

                 See accompanying notes to financial statements.

                                       10
<PAGE>

THE GABELLI GLOBAL CONVERTIBLE SECURITIES FUND
PORTFOLIO OF INVESTMENTS (CONTINUED) -- JUNE 30, 2000 (UNAUDITED)
--------------------------------------------------------------------------------
                                                                        MARKET
  SHARES                                                 COST           VALUE
 ---------                                               ----           -----
               PREFERRED STOCK  (CONTINUED)
               TELECOMMUNICATIONS -- 2.4%
      5,000    BroadWing Inc.,
                 6.75% Cv. Pfd., Ser. B ..........   $   261,500    $   235,000
      4,000    Global Telesystems Group Inc.,
                 7.25% Cv. Pfd. ..................       197,500         89,000
      4,000    Global Telesystems Group Inc.,
                 7.25% Cv. Pfd.+ .................       200,000         92,250
                                                     -----------    -----------
                                                         659,000        416,250
                                                     -----------    -----------
               WIRELESS COMMUNICATIONS -- 1.3%
      4,000    Winstar Communications Inc.,
                 7.00% Cv. Pfd. ..................       173,500        225,000
                                                     -----------    -----------
               TOTAL PREFERRED STOCKS                  3,177,419      3,006,988
                                                     -----------    -----------

               COMMON STOCKS -- 1.5%
               ENTERTAINMENT -- 1.5%
      3,306    Time Warner Inc. ..................       108,600        251,226
                                                     -----------    -----------
               TOTAL
                 INVESTMENTS -- 99.1%.............   $15,458,880     16,989,501
                                                     ===========
               OTHER ASSETS AND
                 LIABILITIES (NET) -- 0.9%......................        161,033
                                                                    ------------
               NET ASSETS -- 100.0%
                 (1,298,714 shares outstanding) ................    $17,150,534
                                                                    ===========
------------------------
               For Federal tax purposes:
               Aggregate cost ..................................    $15,458,880
                                                                    ===========
               Gross unrealized appreciation ...................    $ 2,511,046
               Gross unrealized depreciation ...................       (980,425)
                                                                    -----------
               Net unrealized appreciation .....................    $ 1,530,621
                                                                    ===========


 PRINCIPAL                                    SETTLEMENT    NET UNREALIZED
  AMOUNT                                         DATE        DEPRECIATION
 ---------                                    ----------    --------------
               FORWARD FOREIGN EXCHANGE CONTRACTS
207,680,000(b) Deliver Japanese Yen
                 in exchange for
                 USD $2,043,250 ............   02/16/01       $(43,250)
194,760,000(b) Deliver Japanese Yen
                 in exchange for
                 USD $1,962,320 ............   06/27/01       $ 37,680
                                                              --------
                                                              $ (5,570)
                                                              ========
------------------------
(a)   Security exempt from registration under Rule 144A of the Securities Act of
      1933, as amended.  These  securities may be resold in transactions  exempt
      from registration, normally to qualified institutional buyers. At June 30,
      2000, the market value of Rule 144A  securities  amounted to $1,254,074 or
      7.3% of net assets.
(b)   Principal amount denoted in Japanese Yen.
(c)   Principal amount denoted in French Francs.
(d)   Principal amount denoted in Euros. (e) Principal amount denoted in British
      Pounds.
+     Non-income producing security.
USD - U.S. Dollars.

                                       % OF
                                      MARKET         MARKET
    GEOGRAPHIC DIVERSIFICATION         VALUE         VALUE
    --------------------------        ------      ----------
    North America ................     41.0%      $ 6,965,588
    Europe .......................     28.8%        4,888,821
    Japan ........................     27.1%        4,603,092
    Latin America ................      2.4%          402,375
    Asia/Pacific Rim .............      0.7%          129,625
                                      ------      -----------
                                      100.0%      $16,989,501
                                      ======      ===========

                 See accompanying notes to financial statements.

                                       11
<PAGE>

                         THE GABELLI GLOBAL CONVERTIBLE SECURITIES FUND

STATEMENT OF ASSETS AND LIABILITIES
JUNE 30, 2000 (UNAUDITED)
----------------------------------------------------------------
ASSETS:
  Investments, at value (Cost $15,458,880) ........  $16,989,501
  Receivable for investments sold .................      972,798
  Receivable for Fund shares sold .................        1,670
  Dividends, interest and reclaims receivable .....       76,332
                                                     -----------
  TOTAL ASSETS ....................................   18,040,301
                                                     -----------
LIABILITIES:
  Payable for investments purchased ...............      241,050
  Payable for Fund shares redeemed ................        5,771
  Payable for investment advisory fees ............       15,264
  Payable for distribution fees ...................        3,816
  Payable to custodian ............................      591,027
  Unrealized depreciation on forward
    foreign exchange contracts ....................        5,570
  Other accrued expenses ..........................       27,269
                                                     -----------
  TOTAL LIABILITIES ...............................      889,767
                                                     -----------
  NET ASSETS applicable to 1,298,714
    shares outstanding ............................  $17,150,534
                                                     ===========
NET ASSETS CONSIST OF:
  Capital stock, at par value .....................  $     1,299
  Additional paid-in capital ......................   15,508,956
  Accumulated net investment loss .................     (319,529)
  Accumulated net realized gain on investments
    and foreign currency transactions .............      436,253
  Net unrealized appreciation on investments
    and foreign currency transactions .............    1,523,555
                                                     -----------
  TOTAL NET ASSETS ................................  $17,150,534
                                                     ===========
SHARES OF CAPITAL STOCK:
   CLASS AAA:
   Net Asset Value, offering and
     redemption price per share
     (1,298,398 shares outstanding) ...............       $13.21
                                                          ======
   CLASS A:
   Net Asset Value and redemption
     price per share (316 shares outstanding) .....       $13.21
                                                          ======
   Maximum sales charge ...........................        5.75%
                                                           =====
   Maximum offering price per share (NAV
     [DIVIDE] 0.9425, based on maximum sales
     charge of 5.75% of the offering price at
     June 30, 2000) ...............................       $14.02
                                                          ======


STATEMENT OF OPERATIONS
FOR THE SIX MONTHS ENDED JUNE 30, 2000 (UNAUDITED)
----------------------------------------------------------------
INVESTMENT INCOME:
  Dividends .......................................  $   101,984
  Interest ........................................      179,251
  Amortization of premium .........................     (385,699)
                                                     -----------
  TOTAL INVESTMENT LOSS ...........................     (104,464)
                                                     -----------
EXPENSES:
  Investment advisory fees ........................       99,452
  Distribution fees ...............................       24,903
  Registration fees ...............................       18,971
  Shareholder communications expenses .............       18,720
  Shareholder services fees .......................       16,687
  Legal and audit fees ............................       11,732
  Custodian fees ..................................        8,302
  Directors' fees .................................          271
  Interest expense ................................       13,417
  Miscellaneous expenses ..........................        2,610
                                                     -----------
  TOTAL EXPENSES ..................................      215,065
                                                     -----------
  NET INVESTMENT LOSS .............................     (319,529)
                                                     -----------
NET REALIZED AND UNREALIZED GAIN (LOSS)
  ON INVESTMENTS AND FOREIGN
  CURRENCY TRANSACTIONS:
  Net realized gain on investments
    and foreign currency transactions .............    1,287,341
  Net change in unrealized appreciation
    on investments and foreign currency
    transactions ..................................   (1,672,211)
                                                     -----------
  NET REALIZED AND UNREALIZED LOSS ON
    INVESTMENTS AND FOREIGN CURRENCY
    TRANSACTIONS ..................................     (384,870)
                                                     -----------
  NET DECREASE IN NET ASSETS RESULTING
    FROM OPERATIONS ...............................  $  (704,399)
                                                     ===========
<TABLE>
<CAPTION>

STATEMENT OF CHANGES IN NET ASSETS
------------------------------------------------------------------------------------------------------------
                                                                       SIX MONTHS ENDED
                                                                         JUNE 30, 2000        YEAR ENDED
                                                                          (UNAUDITED)      DECEMBER 31, 1999
                                                                      -----------------    -----------------
<S>                                                                      <C>                 <C>
OPERATIONS:
  Net investment loss                                                    $  (319,529)        $   (216,886)
  Net realized gain on investments and foreign currency transactions ...   1,287,341            1,762,262
  Net change in unrealized appreciation on investments
    and foreign currency transactions ..................................  (1,672,211)           2,778,010
                                                                         -----------          -----------
  NET INCREASE (DECREASE) IN NET ASSETS RESULTING FROM OPERATIONS.......    (704,399)           4,323,386
                                                                         -----------          -----------
DISTRIBUTIONS TO SHAREHOLDERS:
  In excess of net investment income                                              --              (33,793)
  Net realized gain on investments .....................................    (851,088)          (1,531,962)
                                                                         -----------          -----------
  TOTAL DISTRIBUTIONS TO SHAREHOLDERS ..................................    (851,088)          (1,565,755)
                                                                         -----------          -----------
CAPITAL SHARE TRANSACTIONS:
  Class AAA ............................................................   1,108,162            7,509,096
  Class A ..............................................................       5,010                   --
                                                                         -----------          -----------
  Net increase in net assets from capital share transactions ...........   1,113,172            7,509,096
                                                                         -----------          -----------
  NET INCREASE (DECREASE) IN NET ASSETS ................................    (442,315)          10,266,727
NET ASSETS:
  Beginning of period ..................................................  17,592,849            7,326,122
                                                                         -----------          -----------
  End of period ........................................................ $17,150,534          $17,592,849
                                                                         ===========          ===========
</TABLE>

                See accompanying notes to financial statements.

                                       12
<PAGE>

THE GABELLI GLOBAL CONVERTIBLE SECURITIES FUND
NOTES TO FINANCIAL STATEMENTS (UNAUDITED)
--------------------------------------------------------------------------------
1. ORGANIZATION.  The Gabelli Global Convertible Securities Fund (the "Fund"), a
series of Gabelli Global Series Funds, Inc. (the  "Corporation"),  was organized
on July 16,  1993 as a  Maryland  corporation.  The  Fund is a  non-diversified,
open-end  management  investment company registered under the Investment Company
Act of 1940,  as amended (the "1940 Act"),  and one of four  separately  managed
portfolios  (collectively,  the  "Portfolios")  of the  Corporation.  The Fund's
primary  objective is to obtain a high rate of total return.  The Fund commenced
investment operations on February 3, 1994.

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 Board
with member banks of the Federal Reserve System or with other brokers or dealers
that meet credit guidelines established by the Adviser and reviewed by the Board
of 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

                                       13
<PAGE>

THE GABELLI GLOBAL CONVERTIBLE SECURITIES FUND
NOTES TO FINANCIAL STATEMENTS (CONTINUED) (UNAUDITED)
--------------------------------------------------------------------------------
business day, the value of the collateral is  marked-to-market  on a daily basis
to maintain 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.

OPTIONS.  The Fund may  purchase or write call or put options on  securities  or
indices.  As a writer of put options,  the Fund receives a premium at the outset
and then bears the risk of  unfavorable  changes  in the price of the  financial
instrument  underlying  the option.  The Fund would incur a loss if the price of
the underlying  financial  instrument  decreases  between the date the option is
written and the date on which the option is terminated. The Fund would realize a
gain,  to the extent of the premium,  if the price of the  financial  instrument
increases between those dates.

As a purchaser of put options,  the Fund pays a premium for the right to sell to
the seller of the put option the underlying  security at a specified  price. The
seller of the put has the  obligation to purchase the  underlying  security upon
exercise  at the  exercise  price.  If the  price  of  the  underlying  security
declines,  the Fund would realize a gain upon sale or exercise.  If the price of
the underlying security increases, the Fund would realize a loss upon sale or at
expiration  date, but only to the extent of the premium paid. For the six months
ended June 30, 2000 the Fund did not write options.

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 June 30, 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,

                                       14
<PAGE>

THE GABELLI GLOBAL CONVERTIBLE SECURITIES FUND
NOTES TO FINANCIAL STATEMENTS (CONTINUED) (UNAUDITED)
--------------------------------------------------------------------------------
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.

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.  If the value of more than 50%
of the Fund's total  assets at the close of any taxable year  consists of stocks
or securities of non-U.S.  corporations,  the Fund is permitted and may elect to
treat any non-U.S. taxes paid by it as paid by its shareholders.


                                       15
<PAGE>


THE GABELLI GLOBAL CONVERTIBLE SECURITIES FUND
NOTES TO FINANCIAL STATEMENTS (CONTINUED) (UNAUDITED)
--------------------------------------------------------------------------------
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 June 30, 2000 the Fund  incurred  distribution  costs payable to Gabelli &
Company,  Inc., an affiliate of the Adviser, of $24,900 and $3 for Class AAA and
Class A Shares,  respectively,  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 June 30, 2000,  other than short term securities,  aggregated  $10,597,184
and $9,963,572, respectively.

6. TRANSACTIONS WITH AFFILIATES.  During the six months ended June 30, 2000, the
Fund paid  brokerage  commissions  of $180 to  Gabelli & Company,  Inc.  and its
affiliates.

7. LINE OF  CREDIT.  The Fund has  access to an  unsecured  line of credit up to
$25,000,000  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 $203,000 of borrowings outstanding at June 30,
2000.

The average daily amount of borrowings  outstanding  within the six months ended
June 30, 2000 was $444,594,  with a related  weighted  average  interest rate of
6.88%.  The maximum amount borrowed at any time during the six months ended June
30, 2000 was $2,840,000.

8. CAPITAL STOCK  TRANSACTIONS.  Transactions in shares of capital stock were as
follows:
<TABLE>
<CAPTION>

                                                           SIX MONTHS ENDED               YEAR ENDED
                                                             JUNE 30, 2000              DECEMBER 31, 1999
                                                     --------------------------    --------------------------
                                                      SHARES          AMOUNT         SHARES          AMOUNT
                                                     ---------      -----------    ---------      -----------
                                                             CLASS AAA                      CLASS AAA
                                                     --------------------------    --------------------------
<S>                                                  <C>            <C>            <C>           <C>

Shares sold ......................................    850,082       $12,427,636     939,175      $12,219,522
Shares issued upon reinvestment of dividends .....     58,566           814,793     110,965        1,520,095
Shares redeemed ..................................   (878,140)      (12,134,267)   (506,169)      (6,230,521
                                                     --------       -----------     -------       ----------
    Net increase .................................     30,508       $ 1,108,162     543,971      $ 7,509,096
                                                     ========       ===========     =======      ===========

                                                             CLASS A (A)
                                                     --------------------------
Shares sold ......................................        307       $     4,886
Shares issued upon reinvestment of dividends .....          9               124
                                                     --------       -----------
    Net increase .................................        316       $     5,010
                                                     ========       ===========

(a) From commencement of offering on March 1, 2000.
</TABLE>


                                       16
<PAGE>

THE GABELLI GLOBAL CONVERTIBLE SECURITIES FUND
NOTES TO FINANCIAL STATEMENTS (CONTINUED) (UNAUDITED)
--------------------------------------------------------------------------------
9. NEW SHARE  CLASSES.  The Board of Directors of the Fund approved a Rule 18f-3
Multi-Class Plan relating to the creation of three additional  classes of shares
of the Fund - Class A Shares,  Class B Shares and Class C Shares (the "New Share
Classes"). The existing class of shares was redesignated as Class AAA Shares. In
addition,  the Board has also  approved  an Amended  and  Restated  Distribution
Agreement, Rule 12b-1 plans for each of the New Share Classes and an Amended and
Restated  Plan of  Distribution  for the  existing  class of shares  (Class  AAA
Shares).  The New Share  Classes were offered to the public as of March 1, 2000.
No Class B or Class C shares have been sold as of June 30, 2000.  Class A shares
are subject to a maximum  front-end  sales  charge of 5.75%.  Class B shares are
subject to a contingent  deferred sales charge (CDSC) upon redemption within six
years of purchase. The applicable CDSC is equal to a declining percentage of the
lesser of the net asset value per share at the date of  original  purchase or at
the date of  redemption,  based on the length of time  held.  Class C shares are
subject to a 1% CDSC for two years after purchase.

                                       17
<PAGE>


<TABLE>
<CAPTION>

THE GABELLI GLOBAL CONVERTIBLE SECURITIES FUND
FINANCIAL HIGHLIGHTS
--------------------------------------------------------------------------------
Selected data for a share of capital stock outstanding throughout each period:

                            INCOME FROM INVESTMENT OPERATIONS                                  DISTRIBUTIONS
                --------------------------------------------------------    ------------------------------------------------------
                                               Net                                                                      In Excess
                Net Asset       Net        Realized and         Total                     In Excess        Net           of Net
  Period          Value,     Investment     Unrealized          from           Net         of Net        Realized       Realized
   Ended        Beginning      Income      Gain (Loss) on     Investment    Investment    Investment     Gain on         Gain on
December 31     of Period      (Loss)       Investments       Operations      Income       Income       Investments    Investments
-----------     ---------    ----------    --------------     ----------    ----------    ----------    -----------    -----------
<S>               <C>          <C>             <C>              <C>            <C>          <C>           <C>            <C>
CLASS AAA
   2000(a)        $13.88       $(0.22)         $0.15            $(0.07)            --           --        $(0.60)            --
   1999            10.12        (0.18)          5.33              5.15             --       $(0.03)        (1.36)            --
   1998             9.93        (0.12)          0.93              0.81             --        (0.01)        (0.07)            --
   1997            10.18         0.11           0.17              0.28         $(0.14)          --         (0.90)        $(0.13)
   1996            10.79         0.43           0.16              0.59          (0.43)          --         (0.77)            --
   1995             9.93         0.39           0.86              1.25          (0.39)          --            --             --
CLASS A
   2000(b)         15.89        (0.22)         (2.06)            (2.28)            --           --         (0.40)            --



                 DISTRIBUTIONS                                          RATIOS TO AVERAGE NET ASSETS/SUPPLEMENTAL DATA
                 -------------                                 -----------------------------------------------------------
                                                                                 Net
                                   Net Asset                   Net Assets     Investment       Operating
  Period                            Value,                       End of      Income (Loss)     Expenses to       Portfolio
   Ended            Total           End of       Total           Period       to Average       Average Net       Turnover
December 31      Distributions      Period       Return+       (in 000's)     Net Assets      Assets (c)(d)        Rate
-----------      -------------     ---------     -------       -----------   -------------    -------------      ---------
<S>                 <C>              <C>         <C>             <C>           <C>               <C>               <C>
CLASS AAA
   2000(a)          $(0.60)          $13.21       (0.7)%         $17,147       (3.21)%(e)        2.16%(e)           51%
   1999              (1.39)           13.88       51.1            17,593       (2.29)            2.44              151
   1998              (0.08)           10.12        8.6             7,326       (1.00)            2.63               89
   1997              (1.07)            9.39        2.8             9,375        1.17             2.48              100
   1996              (1.20)           10.18        5.5            13,527        2.00             2.35              126
   1995              (0.39)           10.79       12.6            15,742        2.90             2.41              152
CLASS A
   2000(b)           (0.40)           13.21      (14.3)                4       (3.21)(e)         2.16(e)            51
</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) For the period  ended June 30, 2000;  unaudited.  (b) From  commencement  of
    offering on March 1, 2000.
(c) The Fund incurred  interest expense during the years ended December 31, 1999
    and 1997. If interest expense had not been incurred, the ratios of operating
    expenses to average net assets would have been 2.42%and 2.46%, respectively.
    In addition, the ratio for the year ended December 31, 1997 does not include
    a reduction of expenses for custodian fee credits.  Including  such credits,
    the ratio would have been 2.47%.
(d) The Fund  incurred  interest  expense  during the six months  ended June 30,
    2000.  If interest  expense had not been  incurred,  the ratio of  operating
    expenses to average net assets would have been 2.03% for Class AAA and Class
    A.
(e) Annualized.

                 See accompanying notes to financial statements.

                                       18
<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: 51/2%
                                       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>

             Gabelli Global Series Funds, Inc.
     THE GABELLI GLOBAL CONVERTIBLE SECURITIES 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           Karl Otto Pohl
CHAIRMAN AND CHIEF              FORMER PRESIDENT
INVESTMENT OFFICER              DEUTSCHE BUNDESBANK
GABELLI ASSET MANAGEMENT INC.

Felix J. Christiana             Werner J. Roeder, MD
FORMER SENIOR VICE PRESIDENT    MEDICAL DIRECTOR
DOLLAR DRY DOCK SAVINGS BANK    LAWRENCE HOSPITAL

Anthony J. Colavita             Anthonie C. van Ekris
ATTORNEY-AT-LAW                 MANAGING DIRECTOR
ANTHONY J. COLAVITA, P.C.       BALMAC INTERNATIONAL, INC.

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

          OFFICERS AND PORTFOLIO MANAGERS

Mario J. Gabelli, CFA           A. Hartswell Woodson, III
PRESIDENT AND CHIEF             VICE PRESIDENT AND
INVESTMENT OFFICER              PORTFOLIO MANAGER

Bruce N. Alpert                 James E. McKee
VICE PRESIDENT AND              SECRETARY
TREASURER

                      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  Global   Convertible   Securities   Fund.  It  is  not  authorized  for
distribution  to  prospective  investors  unless  preceded or  accompanied by an
effective                                                            prospectus.
--------------------------------------------------------------------------------
GAB441Q200SR

                                             [PHOTO OF MARIO J. GABELLI OMITTED]

                                  THE
                                  GABELLI
                                  GLOBAL
                                  CONVERTIBLE SECURITIES
                                  FUND


                                                              SEMI-ANNUAL REPORT
                                                                   JUNE 30, 2000


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