GABELLI CONVERTIBLE SECURITIES FUND INC /DE
N-30D, 1999-08-17
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[Logo and Graphic]

               THE GABELLI
               CONVERTIBLE
               SECURITIES
               FUND, INC.

SEMI-ANNUAL REPORT
JUNE 30, 1999


<PAGE>

[Logo]

THE GABELLI
CONVERTIBLE
SECURITIES
FUND, INC.

Our cover icon represents the underpinnings of Gabelli. The Teton mountains in
Wyoming represent what we believe in in America -- that creativity, ingenuity,
hard work and a global uniqueness provide enduring values. They also stand out
in an increasingly complex, interconnected and interdependent economic world.

INVESTMENT OBJECTIVE:

The Gabelli Convertible Securities Fund, Inc. is a closed-end, diversified
management investment company whose primary objective is to seek a high level of
total return through a combination of current income and capital appreciation by
investing in convertible securities.

                    THIS REPORT IS PRINTED ON RECYCLED PAPER.


<PAGE>

TO OUR SHAREHOLDERS,

      Our convertible  securities portfolio bucked                   [photo]
the  headwind  of  rising  interest  rates  in the                    [logo]
second quarter of 1999.  Our value  discipline and                  THE GABELLI
research bias toward  smaller  companies  deserves                  CONVERTIBLE
most of the credit for the Fund's  solid  gains in                  SECURITIES
what  was  a  difficult   period  for  convertible                  FUND, INC.
securities in general.

INVESTMENT PERFORMANCE

      For the  second  quarter  ended June 30,  1999,  The  Gabelli  Convertible
Securities Fund,  Inc.'s  ("Convertible  Securities Fund") net asset value (NAV)
per share  increased  7.8% to $12.13,  after  adjusting  for the $0.20 per share
distribution paid on June 28, 1999. This compares to an increase of 8.1% for the
Lipper Inc. Convertible Securities Fund Average over the same period. The Lipper
average is an unmanaged  indicator  of  investment  performance.  For the twelve
months ended June 30, 1999, the Fund increased  12.9% versus an increase of 8.8%
for the Lipper Inc. Convertible Securities Fund Average over this period.

      The  three-  and  five-year  average  annual  returns  of the  Convertible
Securities Fund were 11.6% and 11.2%,  respectively.  Since inception on July 3,
1989 through June 30, 1999, the  Convertible  Securities  Fund achieved a 172.2%
total return which represents an average annual return of 10.5%.

      The Fund's common shares on the New York Stock  Exchange ended the quarter
at $11.3125, up 3.5% for the quarter, up 12.1% for the past twelve months and up
47.6% from its initial price of $11.25 on March 31, 1995 after adjusting for the
reinvestment of dividends  totaling $4.165 per share which were paid during this
period.

      Our Fund is  managed  with the goal of  achieving  a 600-800  basis  point
spread above long-term  treasury yields.  We hope to generate these returns over
the long term. This is the type of performance  that our Fund has been known for
and we  anticipate  will  continue  in  the  future.  Of  course,  there  are no
guarantees.

      Over the past few  months  the  Fund's  shares  have  traded at an average
discount of approximately 7% to the net asset value. At these price levels,  the
Fund is an  ideal  opportunity  for  investors  to add to their  positions.  Our
monthly cash purchase program  provides an easy way for registered  Shareholders
to acquire  additional  shares at the current market price at no commission.  In
addition,  to  underscore  that "we eat our own  cooking",  the  Adviser and its
affiliates have announced their intention to buy up to one million common shares
in the open market  (569,264 of which have been acquired to date).  The Fund has
also  instituted  a share  repurchase  program  which we  discuss  later in this
report.


<PAGE>

INVESTMENT RESULTS (a)(c)

================================================================================

                                              Quarter
                                 ----------------------------------
                                   1st     2nd      3rd        4th     Year
1999:    Net Asset Value ......  $11.45  $12.13      __         __       __
         Total Return .........     1.8%    7.8%     __         __       __
- --------------------------------------------------------------------------------
1998:    Net Asset Value ......  $11.87  $11.66   $10.96     $11.45   $11.45
         Total Return .........     5.3%    0.0%   (4.2)%       7.4%     8.3%
- --------------------------------------------------------------------------------
1997:    Net Asset Value ......  $11.13  $11.38   $11.81     $11.48   $11.48
         Total Return .........     1.7%    3.5%     5.0%       2.8%     13.5%
- --------------------------------------------------------------------------------
1996:    Net Asset Value ......  $11.28  $11.33   $11.23     $11.08   $11.08
         Total Return .........     3.6%    1.6%     0.3%       2.6%     8.4%
- --------------------------------------------------------------------------------
1995:    Net Asset Value ......  $11.14  $11.51   $11.64     $11.01   $11.01
         Total Return .........     5.1%    5.2%     3.0%       1.1%     15.0%
- --------------------------------------------------------------------------------
1994:    Net Asset Value ......  $11.54  $11.39   $11.60     $10.60   $10.60
         Total Return .........     0.2%  (1.3)%     1.8%     (0.9)%   (0.2)%
- --------------------------------------------------------------------------------
1993:    Net Asset Value ......  $12.07  $12.36   $12.75     $11.52   $11.52
         Total Return .........     5.4%    2.4%     3.2%       1.5%     13.1%
- --------------------------------------------------------------------------------
1992:    Net Asset Value ......  $11.29  $11.52   $11.90     $11.45   $11.45
         Total Return .........     3.5%    2.0%     3.3%       3.6%     13.0%
- --------------------------------------------------------------------------------
1991:    Net Asset Value ......  $11.06  $11.27   $11.57     $10.91   $10.91
         Total Return .........     5.6%    1.9%     2.7%       1.8%     12.5%
- --------------------------------------------------------------------------------
1990:    Net Asset Value ......  $10.56  $10.68   $10.56     $10.47   $10.47
         Total Return .........     1.5%    2.1%   (1.1)%       3.8%     6.3%
- --------------------------------------------------------------------------------
1989:    Net Asset Value ......     __      __    $10.54     $10.51   $10.51
         Total Return .........     __      __       5.4%(b)    0.8%     6.3%(b)
- --------------------------------------------------------------------------------

AVERAGE ANNUAL RETURNS - JUNE 30, 1999  (A)

1 Year ..................  12.9%
5 Year ..................  11.2%
Life of Fund (b) ........  10.5%

(a) Total return and average  annual return  reflect  changes in net asset value
and  reinvestment of dividends and are net of expenses.  Of course,  the returns
noted represent past performance and do not guarantee future results. Investment
returns and the principal value of an investment will fluctuate. When shares are
sold  they  may be  worth  more or less  than  their  original  cost.  (b)  From
commencement of operations on July 3, 1989. (c) The Fund converted to closed-end
status on March 31, 1995.

                    Dividend History  - Common Stock
- ------------------------------------------------------------------
Payment Date                 Rate Per Share     Reinvestment Price
- ------------                 --------------     ------------------

June 28, 1999                    $0.200               $11.38
March 29, 1999                   $0.200               $11.04
December 28, 1998                $0.320               $11.49
September 28, 1998               $0.200               $10.52
June 26, 1998                    $0.200               $11.02
March 26, 1998                   $0.200               $11.10
December 26, 1997                $0.600               $10.49
September 26, 1997               $0.120               $10.44
June 27, 1997                    $0.120               $ 9.96
March 27, 1997                   $0.120               $ 9.63
December 27, 1996                $0.375               $ 9.51
September 23, 1996               $0.120               $ 9.73
June  24, 1996                   $0.120               $10.17
March 25, 1996                   $0.120               $10.41
December 27, 1995                $0.750               $10.95
September 27, 1995               $0.200               $11.10
June 27, 1995                    $0.200               $11.21
December 31, 1994                $0.900               $10.60
December 31, 1993                $1.425               $11.52
December 31, 1992                $0.876               $11.45
December 31, 1991                $0.865               $10.91
December 31, 1990                $0.490               $10.47
June 28, 1990                    $0.100               $10.68
March 29, 1990                   $0.100               $10.55
December 29, 1989                $0.115               $10.51

================================================================================

                                       2

<PAGE>
WHAT WE DO

      The success of momentum  investing in recent
years   and   investors'    desire   for   instant
gratification   have   combined   to  make   value
investing  appear dull. At the risk of being dull,
we will once again  describe  the  "boring"  value
approach  that has seen us  through  both good and
bad markets  over the last 10 years at The Gabelli           [LOGO]
Convertible  Securities Fund and for over 21 years
at  Gabelli  Asset  Management  Company.  In  past
reports,   we  have   tried  to   articulate   our
investment   philosophy   and   methodology.   The
following   graphic   further    illustrates   the
interplay   among  the  four   components  of  our
valuation approach.

      Our  focus  is  on  free  cash  flow;  earnings  before  interest,  taxes,
depreciation and amortization (EBITDA) minus the capital expenditures  necessary
to grow the  business.  We  believe  free cash flow is the best  barometer  of a
business'  value.   Rising  free  cash  flow  often   foreshadows  net  earnings
improvement.  We also look at earnings per share  trends.  Unlike Wall  Street's
ubiquitous  earnings momentum  players,  we do not try to forecast earnings with
accounting  precision and then trade stocks based on quarterly  expectations and
realities.  We simply try to position  ourselves in front of long-term  earnings
uptrends.  In  addition,  we  analyze  on  and  off  balance  sheet  assets  and
liabilities such as plant and equipment,  inventories,  receivables,  and legal,
environmental  and health care issues.  We want to know  everything and anything
that will add to or detract  from our  private  market  value  (PMV)  estimates.
Finally,  we look for a catalyst;  something happening in the company's industry
or indigenous to the company itself that will surface value.  In the case of the
independent  telephone  stocks,  the  catalyst is a  regulatory  change.  In the
agricultural  equipment  business,  it is the increasing  world-wide  demand for
American  food  and  feed  crops.  In other  instances,  it may be a  change  in
management,  sale or spin-off of a division or the  development  of a profitable
new business.

      Once we  identify  stocks  that  qualify  as  fundamental  and  conceptual
bargains,  we then become patient  investors.  This has been a proven  long-term
method for preserving and enhancing wealth in the U.S.  equities market.  At the
margin,  our new investments are focused on businesses that are well-managed and
will benefit from sustainable  long-term economic dynamics.  These include macro
trends,  such as the  globalization  of the market in filmed  entertainment  and
telecommunications, and micro trends, such as an increased focus on productivity
enhancing goods and services.

CONVERTIBLE SECURITIES ARE "HYBRIDS"

      It is important to understand our stock selection discipline because price
movement in the underlying  equity will  generally  have the greatest  impact on
convertible  securities pricing.  The convertible  securities market consists of
bonds,  debentures,  corporate  notes,  preferred  stocks and  warrants or other
similar  securities  which may be converted  into or exchanged  for a prescribed
amount of  common  stock or other  equity  security  of the same or a  different
issuer  within a  particular  period of time at a  specified  price or  formula.
Converts are "hybrid" securities that combine the capital appreciation potential
of equities with the higher yield of fixed income instruments.

                                        3

      Our strategy incorporates the purchase of convertible securities which are
trading at a premium  above  parity  with the common  stock but which  generally
provide a higher yield and, over time, capital  appreciation.  We will also seek
out  "busted"   converts,   where  the  underlying   common  stock  has  dropped
significantly  and the values of both the  conversion  privilege and the convert
are down. Such  securities  will provide both high yields and long-term  capital
appreciation potential.

OUR INVESTMENT OBJECTIVES

      Our mandate is to preserve and enhance our shareholders'  wealth through a
conservative, disciplined approach to convertible securities investing. Our goal
is to generate  profitable  returns in strong  markets and protect  principal in
weak markets by taking  advantage of the unique  characteristics  of convertible
securities.

COMMENTARY

THE ECONOMY: DUELING DATA ON INFLATION

      Inflation  played  "peek-a-boo"  with  investors in the second  quarter of
1999. A jump in April's Consumer Price Index ("CPI") rattled the bond market and
had equity investors  holding their breath.  Inflation all but disappeared again
in the May CPI numbers. The bond market stabilized and stocks regained momentum.
Then, citing the emergence of "incipient ingredients" for inflation and the long
lead time of monetary  policy,  the Federal  Reserve decided to hike the Federal
Funds  rate by 25 basis  points  on June 30,  in what  Chairman  Alan  Greenspan
characterized as a "preemptive action" against inflation.  This sparked a flurry
of  observers  to  question  whether  this  single  modest rate hike would be an
effective  vaccination  against inflation or just the first in a series of shots
that will eventually take the froth out of the economy and financial markets.

      We  are  not  optimistic  on  inflation.  The  inflationary  threat  comes
partially  from  rising  commodities  prices,  (most  notably  oil),  which  are
recovering from severely depressed levels following the Asian economic meltdown,
and from the prospect of wage  inflation in fully  employed  America.  Thus far,
technology driven  productivity  gains have offset rising wages.  Along with Fed
Chairman  Greenspan,  we are not sure how much  longer  this can  continue in an
America with help wanted signs in an increasing number of corporate windows.

THE MARKET: EARNINGS AND INTEREST RATES

      In our first  quarter  1999  letter to  shareholders,  we also opined that
earnings  and  interest  rates would call the market tune for the balance of the
year.  In general,  first quarter  earnings met  consensus  estimates and second
quarter earnings should be stronger than  anticipated,  with  particularly  good
comparisons to 1998's second quarter, when General Motor's strike and the plunge
in energy prices crimped reported results.  However,  interest rates are higher,
and until we see  convincing  evidence that  inflation is firmly under  control,
rates are not  likely to trend  much  lower.  With the S&P 500's  gains  already
approximating  1999 earnings growth forecasts,  we see an inadequate  "margin of
safety" in the stock market.  Money flowing into the markets,  particularly from
deal activity, is the fuel powering a market that still favors stocks.  However,
money is no longer pouring into equity mutual funds at the rates we have seen in
previous  years.  All  this  conjecture  leads  us to  the  opinion  that  stock
selectivity remains crucial over the next twelve months.

                                       4

<PAGE>

VALUE ADDS VALUE

      As hybrid securities,  convertibles have "bond value" (the value of yield)
and "stock  value"  (the  value  determined  by the  performance  of  underlying
equities).  With  interest  rates  rising  this  quarter  the  "bond  value"  of
convertible  securities declined across the board.  Growth company  convertibles
suffered the double  whammy of lower "bond  values" and flat to declining  stock
prices.  Value  converts  fared much better,  with stocks in  traditional  value
sectors like the cyclicals,  energy and other commodities  oriented  industries,
and utilities materially outperforming growth stocks.

      Our portfolio has always had a smaller cap value bias. This has not worked
in our favor in recent years, with growth stocks materially  outperforming value
stocks  and  large  cap  stocks  significantly   outperforming  smaller  company
equities. Now the tide may be turning.

      Style and capitalization  sectors generally take lengthy turns leading the
market.  Does the ascent of value and small cap stocks  this  quarter  signify a
major  change in market  leadership?  One quarter of  outperformance  does not a
trend make.  But,  fundamentals  favor value stocks and small cap equities going
forward.   Despite  the  strong  second  quarter  rally,   based  on  historical
measurements,  value stocks remain cheap and growth stocks are still overvalued.
Small cap stocks offer the dual  advantages of generally  better earnings growth
prospects than large caps and  materially  lower  price/earnings  and price/cash
flow multiples.  If value and smaller cap stocks assume stock market leadership,
value oriented smaller company converts will also.

UN-BUSTED CONVERTIBLES

      As previously  discussed,  our portfolio is usually peppered with "busted"
convertibles.  These are converts in which the  underlying  equities are trading
well below conversion parity.  Generally,  these are very high yielding converts
that enhance  portfolio  income.  Occasionally,  these  "busted"  converts  make
substantial  capital  appreciation  contributions  as  well,  as the  underlying
equities recover either through an earnings turnaround or a deal.

      This  quarter,  several of our  "busted"  converts  made very nice  moves.
Omnipoint  converts  rose sharply when  VoiceStream  Wireless made a bid for the
company. Our Chock Full o'Nuts convertible securities holdings also soared, when
it was  discovered  that  Chairman  Norman  Alexander  had failed to disclose to
shareholders  that Sarah Lee had been  trying to buy the  company.  We must take
some  individual  credit  for  this in  that  we  published  a  letter  alerting
shareholders and the investment community to Mr. Alexander's omission.  Earnings
and stock  price  rebounds  for  Sealed Air and  Cendant  also  translated  into
excellent performance for our "busted" convertible holdings in these companies.

      As always, we had some disappointments as well. Our Merrill Lynch holdings
treaded water as rising  interest  rates cooled off financial  service  industry
stocks.  After several years of exceptional  performance,  our CSC (Cablevision)
holdings  declined as "Johnnie  come lately"  momentum  investors  bailed out of
cable television stocks.  Some of our "busted" converts got busted even further,
most notably Boston Chicken, which jumped out of the frying pan into the fire.

                                       5


<PAGE>

BARRON'S ROUNDTABLE - MARK IV INDUSTRIES

      Mario  Gabelli,   our  Chief  Investment  Officer,  has  appeared  in  the
prestigious  Barron's  Roundtable  discussion  annually since 1980.  Many of our
readers have enjoyed the inclusion of selected and edited comments from Barron's
Roundtable in previous  reports to  shareholders.  Once again,  we are including
selected  comments of Mario  Gabelli  from  Barron's  1999  Midyear  Roundtable,
specifically  his  comments  on  one of  our  more  recent  holdings  - Mark  IV
Industries  Inc.  Mark IV  Industries  is a $2.2  billion  global  manufacturing
company with 17,000 employees worldwide. The company's core technologies include
power  transmission,  fluid transfer and  filtration  systems and components for
global  industrial and automotive  markets.  For our  shareholders who prefer to
view the entire  interview,  the  complete  text is available on the Internet at
www.gabelli.com.

      GABELLI: Mark IV is located outside Buffalo, New York. The stock is around
18. There are 50 million shares outstanding.  The company is buying back shares.
Revenues in the year ended February 28, 1999, were $1.95 billion. Long-term debt
is $800 million. GAAP book is $13 a share.

      Mark  IV has a very  good  package  of  companies  in the  industrial  and
auto-parts  businesses.  The stock sells at six times trailing  12-month  EBITDA
[Earnings  Before Interest,  Taxes,  Depreciation  and  Amortization],  which in
today's world is very attractive.  I don't have earnings estimates.  I'm looking
at growth in EBITDA,  which over the next five years could grow  annually in the
high-single-digit,  low-double-digit  range, without further acquisitions.  They
bought an Italian maker of small gasoline and diesel engines.  They're trying to
package  it  with  certain  transmission  technology  they're  developing.  This
combination could become an interesting growth vehicle over the next five years.
Even if it doesn't work as well as some would argue,  this is a very attractive,
cheap stock. [ ]

GOOD THINGS COME TO THOSE WHO WAIT

      The  critical  element to our  success  in the  equities  and  convertible
securities  markets  has been  patience  in both the  selection  process  and in
waiting for the values of portfolio positions to be recognized. We will continue
to be patient and  opportunistic  in  selecting  converts  for the Fund and will
invest in short-term  instruments  (including  time  sensitive  work-outs)  when
appropriate.  We bought mostly short-term U.S. Treasury obligations in the past.
However,  the U.S.  financial system has improved  significantly and we now take
advantage of other  short-term  alternatives.  In this regard,  the  Convertible
Securities Fund at times engages in risk arbitrage to generate returns.  By risk
arbitrage we mean investing in "event"  driven  situations;  primarily,  but not
exclusively,  in  announced  mergers,  acquisitions,  reorganizations  and other
"workout"  opportunities.  In  order  to  avoid  overall  market  risk in  these
opportunities, the Fund will concentrate on the lower risk transactions.

      We borrow a quote from  Warren  Buffett to explain our  occasional  use of
risk arbitrage in the Fund:

      "Our  subsidiaries  sometimes  engage in  arbitrage as an  alternative  to
holding  short-term  cash  equivalents.  We  prefer,  of  course,  to make major
long-term  commitments.  But we often  have more cash than good  ideas.  At such
times arbitrage sometimes promises much greater returns than Treasury Bills and,
equally  important,  cools any temptation we may have to relax our standards for
long-term investments."

                                       6


<PAGE>

      In short,  the high cash  position in the Fund does not reflect any effort
on  our  part  to  time  the  convertible  securities  market.  It is  rather  a
consequence  of our value  oriented  discipline.  At the same time,  some of our
convertible  securities  have been  called by the issuer and we either  received
cash or stock.  Our portfolio  turnover rate reflects this activity,  as well as
our investments in "event" driven  situations which were consummated  during the
year.  We are  always  hard at work  evaluating  opportunities  and  identifying
fundamental  bargains to progress to a more fully invested posture.  However, we
will not stretch our fundamental parameters and introduce greater market risk to
the portfolio.

      Global mergers and  acquisitions  surged to $1.5 trillion during the first
six months of 1999,  fueled by  deregulation,  low  interest  rates,  increasing
competition and the introduction of a common currency in Europe.  More than half
the  transactions  announced  worldwide,  or $829.1 billion,  came in the second
quarter.  The  Convertible   Securities  Fund  participated  in  some  of  these
transactions through our holdings in Platinum Technology  International and Nine
West Group,  illustrating  our  occasional  use of risk  arbitrage  in announced
deals.

   PLATINUM  TECHNOLOGY  INTERNATIONAL,  INC. (SUB. DEB. CV.,  6.25%,  12/15/02)
   agreed to be bought by Computer Associates International,  Inc. (CA - $35 5/8
   - NYSE),  for about $3.5 billion in cash,  bolstering CA's fledgling  service
   business.  It paid $29.25 for each share of Platinum Technology,  which makes
   software to manage data and helps companies run their information systems. CA
   plans to link its products with Platinum  Technology's  consulting  services,
   especially  in  Europe.  CA also wants  Platinum  Technology's  software  for
   managing data and technology.  The acquisition  brings together two companies
   that  were  involved  in what  was  often a  heated  rivalry.  Following  the
   announcement  of this deal the  Convertible  Securities  Fund  increased  its
   position in Platinum  Technology converts and achieved a 1.5% return in terms
   of capital appreciation  following the tender of these converts,  which is an
   annualized return of 8.1%. In addition, the Fund received the interest income
   of the bond.

   NINE WEST GROUP INC. (SUB. DEB. CV., 5.50%, 07/15/03), the nation's top maker
   and  seller of dress  shoes for women,  agreed to be bought by Jones  Apparel
   Group,  Inc.  (JNY - $28 7/8 - NYSE) for about $26 a share in stock and cash.
   Nine West operates about 1,500 stores  worldwide.  JNY has focused on getting
   licenses  for brands such as Lauren by Ralph  Lauren and selling the fashions
   it designs mainly  through  department  stores.  Now, it wants to put some of
   Nine West's  well-known  shoe brands  such as  Pappagallo  and Easy Spirit on
   clothing. White Plains, New York-based Nine West holds roughly a third of the
   U.S.  women's shoe market  through its own stores such as 9 & Co. and another
   7,000 department, specialty and independent shoe stores that carry its shoes,
   handbags, hosiery and jewelry. Sales for the combined company are expected to
   reach $4.5 billion in the year 2000.  We began  buying Nine West  converts in
   early 1998 and dramatically increased our position following the announcement
   of the deal with Jones Apparel  Group.  Not only does the Fund receive a nice
   yield  from  these  Nine  West  converts  which  enhances  portfolio  income,
   appreciation of these converts as of June 30, 1999 was 12.6% over our holding
   period.

                                       7

<PAGE>


CORPORATE GOVERNANCE

      The Gabelli Convertible Securities Fund continues to consider actions that
may reduce or eliminate the market discount of its shares.  How do we accomplish
this?  There are several  factors  that  historically  have worked to narrow the
discounts of closed-end  funds.  These include  distribution  policies and stock
repurchase programs, both of which we have instituted.

DISTRIBUTION POLICY

      A fund with a distribution policy establishes a fixed payment each year to
its  shareholders as a percentage of net assets or a specific dollar amount.  In
order to accelerate our effort to drive the current  discount to a premium,  the
Convertible  Securities  Fund, at a meeting of the Board of Directors on May 13,
1998, instituted an 8% annual distribution policy. Investors usually favor funds
that offer a constant  stream of cash, or a predictable  yield.  Thus,  there is
more demand for funds with a distribution  policy and historically they trade at
a more narrow discount than funds without a distribution policy.

      In the case of the Gabelli Convertible  Securities Fund, the Fund pays out
a minimum annual distribution of 8% of the net asset value. The method is to pay
$0.20  per  share  in  each  of the  first  three  quarters  of the  year  and a
distribution  in the  fourth  quarter  of a  sufficient  amount to pay 8% of the
average  net  assets  of  the  Fund  or  to  satisfy  the  minimum  distribution
requirements of the Internal Revenue Code. The Fund recently  distributed  $0.20
per share on June 28, 1999 in line with this 8% annual distribution policy.

STOCK REPURCHASE PLAN

      A stock repurchase plan allows a company to buy back its own shares in the
open market (in our case, the New York Stock  Exchange).  This reduces the total
number of shares  outstanding and increases the earnings per share. At a special
meeting of the Board of Directors on October 27, 1997, the Board  authorized the
repurchase  of up  to  250,000  shares  of  the  Convertible  Securities  Fund's
outstanding  shares. We were the first company on the New York Stock Exchange to
announce a stock repurchase program on this date when the market declined 554.26
points, or 7.2%.

      Pursuant to this stock  repurchase  plan, the Convertible  Securities Fund
may from time to time  purchase  shares of its capital  stock in the open market
when the  shares are  trading  at a  discount  of 10% or more from the net asset
value of the  shares.  In total,  through  June 30,  1999,  176,300  shares were
repurchased  in the open market  since the  inception  of this stock  repurchase
plan.  Since the discount to net asset value has narrowed and remained under 10%
throughout  most of the first six months of this year,  the Fund has been unable
to aggressively  purchase  shares.  In fact, the discount to net asset value was
under 10% during most of last year as well.

      When  the  Convertible  Securities  Fund  purchases  its own  shares  at a
discount to NAV, the Fund realizes a benefit equal to the difference between the
net asset  value and the  purchase  price.  This  benefit is credited to the net
assets of the remaining shares,  thus boosting the NAV. The larger the discount,
the greater the benefit on the NAV.  Further,  the market price is determined by
supply and demand factors.  If there are more sellers than buyers the price will
decline  until  buyers  enter the market to  establish  a sales  price.  A stock
repurchase program increases demand for the Convertible Securities Fund's shares
in the open market.  This provides a willing buyer of fund shares which offsets,
at least in part, sales of fund shares.

                                       8


<PAGE>

PREFERRED STOCK - AN INVESTMENT FOR THE FUTURE

      On  May  16,  1997,  the  Fund  successfully  completed  its  offering  of
cumulative preferred stock which is rated `AAA' by Standard and Poor's. The Fund
issued 1,200,000  Preferred Shares at $25 per share ($30 million) with an annual
dividend  rate of $2.00 per share paying  quarterly.  The  Preferred  Shares are
trading on the New York Stock  Exchange  under the symbol "GCV Pr" and closed at
$25.5625 on June 30, 1999.

      How would Preferred Shares benefit Common  Shareholders?  Through June 30,
1999, the Convertible  Securities Fund has earned a 10.5% average annual return.
The Preferred Shares were issued with an annual dividend rate of 8.00%. The only
obligation that the Fund has to the Preferred  Shareholders is to pay the stated
dividend rate. Given the current market environment, we considered this to be an
ideal  opportunity to take advantage of relatively low long-term  interest rates
and to earn an excess  return for our Common  Shareholders  consistent  with our
conservative  investment  approach.  Any  return  earned in excess of the stated
dividend  rate,  which is less than the  Fund's  average  annual  return,  would
directly  benefit Common  Shareholders;  however,  any shortfall from the stated
rate would impact the Common Shareholders in the opposite fashion. Therefore, by
taking  advantage of the current  relatively low interest rate  environment  and
achieving our investment objectives, the Preferred Share issuance offers what we
believe is a  conservative  method of  potentially  adding wealth for our Common
Shareholders.

      Furthermore,  Common Shareholders stand to receive certain tax benefits as
a result of the Preferred Stock  offering.  Since taxable income is allocated to
the Preferred Shareholders before Common Shareholders,  taxable distributions to
Common  Shareholders  are  not  required  to the  extent  they  would  be if the
Preferred  Shares were not  outstanding.  With the  completion  of the preferred
offering,  the Adviser has agreed to waive the management fee on the incremental
assets  during any year in which the net asset  value  total  return on the Fund
does not exceed the stated dividend rate on the Preferred Shares.

LET'S TALK CONVERTS

      The following are  specifics on selected  holdings of our Fund.  Favorable
EBITDA  (Earnings  Before  Interest,   Taxes,   Depreciation  and  Amortization)
prospects do not necessarily translate into higher prices, but they do express a
positive trend which we believe will develop over time.

AMERICAN BANKERS  INSURANCE GROUP INC. (ABI) ($3.125 CV. PFD., SER B) has agreed
to be acquired by Fortis for $2.8 billion in cash and assumed  debt,  making the
Dutch-Belgian  financial company the largest insurer of consumer and credit card
loans in the U.S. Fortis,  Belgium's largest financial company, will pay $55 per
share for each American  Bankers share.  Fortis has been  expanding  outside its
home markets (Belgium, the Netherlands and Luxembourg) by developing specialized
insurance  businesses  such as funeral  insurance and health  policies for small
companies.  The transaction is expected to be completed during the third quarter
of 1999.

CITIZENS  UTILITIES  CO.  (CZN)  (5.00% CV.  PFD.)  provides  telecommunications
services  and public  services  to  approximately  1.8 million  customers  in 21
states.  Citizens  owns 83% of Electric  Lightwave  (ELIX - $13.00 - Nasdaq),  a
competitive  local exchange carrier ("CLEC") serving  primarily the western U.S.
Last year, management authorized the separation of Citizens'  telecommunications
businesses and public services businesses into two stand-

                                       9


<PAGE>

alone, publicly traded companies.  Recently, CZN announced agreements to acquire
over 700,000  rural access lines in 10 states for $2.3  billion.  CZN intends to
finance the  transactions  by  divesting  its public  services  operations.  The
company has sold its 16% stake in Centennial  Cellular Corp.  for  approximately
$205 million.  Citizens  also  anticipates  monetizing  its ownership of Century
Communications'  (CTYA - $46.00 - Nasdaq) stock and cable  operations  through a
sale to Adelphia Communications for approximately $220 million.

HILTON  HOTELS  CORP.  (SUB.  DEB.  CV.,  5.00%,  05/15/06)  is  internationally
recognized as one of the  preeminent  hospitality  companies.  Hilton  develops,
owns, manages and franchises hotels,  resorts and vacation ownership properties.
Based on the number of hotel rooms, Hilton is the nation's seventh largest hotel
company.  Hilton has  approximately  250 hotels and resorts in cities throughout
the United  States,  including 61 owned and managed  hotels and 188 hotels under
franchise  agreements.  Flagship  properties  include The  Waldorf-Astoria,  the
Hilton  Chicago  &  Towers  and  Hilton  Hawaiian  Village  (98%-owned).  Hilton
formalized a marketing  alliance with British  company  Ladbroke Group (owner of
Hilton  International)  in January to reunite the Hilton name  worldwide for the
first time in over 30 years.  Hilton's  casino gaming  properties  were spun-off
last  December  into a new company,  Park Place  Entertainment  (PPE - $9.6875 -
NYSE).

KAMAN CORP. (SUB. DEB. CV., 6.00%,  03/15/12),  founded in 1945, is a pioneer in
the  helicopter  industry.  Aircraft  manufacturing  remains  the  core  of  the
business. Kaman services both commercial and government 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.

MEDIAONE  GROUP INC.  (UMG)  (4.50% CV.  PFD.,  SER.  D) is one of the  nation's
leading  broadband  services  companies.  UMG  provides  more than five  million
subscribers  in 17 states with basic and premium cable  television  services and
has recently  introduced  high speed  Internet  access,  telephone  services and
digital  television in some of its service areas.  MediaOne was created from the
1996 union of telecommunications  company MediaOne Group (formerly US West Media
Group) and Continental  Cablevision.  Headquartered in Englewood,  Colorado, the
company is conducting a national upgrade of its hybrid fiber optic/coaxial cable
("HFC") network to broadband technology which improves traditional cable service
and enables  next-generation  products  and  services.  The  Group's  investment
interests  include  25% of Time  Warner  Entertainment  (which  includes  Warner
Brothers  Studio  and Home Box  Office),  24% of PCS Prime Co. and almost 27% of
TeleWest plc. The number three U.S. cable television  company recently agreed to
be acquired by AT&T Corp. (T - $55.8125 - NYSE) for $54 billion.

OMNIPOINT CORP. (7.00% CV. PFD.) is a leading personal  communications  services
("PCS")  carrier in the U.S. with licenses  covering  major  metropolitan  areas
containing nearly 100 million people.  On June 23, 1999,  Omnipoint agreed to be
acquired by VoiceStream Wireless (VSTR - $28.4375 - Nasdaq) for $32 per share in
cash and stock. The combined  company will have PCS licenses  covering about 190
million points of presence ("POPs") and will become a major PCS carrier.

                                       10

<PAGE>



ROGERS  COMMUNICATIONS  INC.  (SUB.  DEB.  CV.,  2.00%,  11/26/05) is a Canadian
company  engaged in cable  operations,  cellular  (through its 81%-owned  Rogers
Cantel Mobile cellular  provider) and media.  Through  Rogers@Home,  the company
will be one of the major  beneficiaries of the growing penetration of cable high
speed access to the Internet in Canadian homes.

SEAGRAM CO. (7.50% CV.  PFD.),  with its 1995 purchase of an 80% interest in MCA
from Matsushita  Electric  Industrial Co. for $5.7 billion,  operates two global
businesses: beverages and entertainment. Spirits and Wine group's major beverage
brands include Chivas Regal, Martell,  Mumm, Crown Royal and Seagram's Gin. With
its December  acquisition of Polygram,  Seagram has created the world's  leading
music  company,  the Universal  Music Group.  Seagram's  entertainment  business
includes the Universal Motion Pictures Group, the Universal  Studios  Recreation
Group and a 46% interest in USANetworks (USAI - $40.125 - Nasdaq).

SPRINT CORP.  (FON) ($1.50 CV. PFD., SER. 1; $1.50 CV. PFD., SER. 2; 8.25%,  CV.
PFD.)  is the  third  largest  long  distance  carrier  and the  second  largest
independent  local telephone  company in the U.S.  Sprint has positioned  itself
globally through a joint venture called  GlobalOne.  Its joint venture partners,
France Telecom and Deutsche Telekom, also have a direct 20% stake in Sprint. FON
faces risks from  prospective  new entrants in its long distance  business which
may be offset by the "ION" high bandwith  network the company is developing  and
by other new services.  Sprint PCS group is the leading personal  communications
services  ("PCS")  carrier  in the U.S.  with  over 3.5  million  customers  and
licenses covering over 230 million people.

SHAREHOLDER MEETING - MAY 17, 1999 - FINAL RESULTS

      The  Annual  Meeting  of  Shareholders  was  held on May  17,  1999 at the
Greenwich Hyatt Regency in Greenwich,  Connecticut.  At that meeting, Common and
Preferred  Shareholders  elected Anthonie C. van Ekris and Salvatore J. Zizza as
Directors of the  Convertible  Securities  Fund. A total of 6,576,123  votes and
6,570,709  votes were cast in favor of each Director and 76,667 votes and 82,081
votes were withheld for each  Director,  respectively.  Preferred  Shareholders,
voting as a separate  class,  elected  Anthony J.  Colavita  as  Director of the
Preferred Shares of the Convertible  Securities Fund. A total of 1,109,172 votes
were cast in favor and 8,309 votes were withheld.

      Mario  J.  Gabelli,  E.  Val  Cerutti,  Dugald  A.  Fletcher,  Anthony  R.
Pustorino,  Felix J.  Christiana  and Karl Otto Pohl  continue to serve in their
capacities as Directors of the Convertible Securities Fund.

      In    addition,     Common    and    Preferred     Shareholders    elected
PricewaterhouseCoopers  LLP as the  independent  accountants for the Convertible
Securities Fund for the year ending December 31, 1999. 6,569,132 votes were cast
in favor of the  approval of this  proposal,  39,440 votes were cast against the
proposal and 44,218 votes abstained.

      We thank you for your participation and appreciate your continued support.

                                       11


<PAGE>



DIVIDENDS

      The Fund  recently  distributed  a  dividend  of $0.20 per share to Common
Shareholders  on June 28,  1999 in line with the  Fund's 8% annual  distribution
policy.  For the twelve months ended June 30, 1999, the Fund distributed a total
of $0.92 per share to Common Shareholders.  Our Preferred Shareholders were paid
a dividend of $0.50 per share on June 28, 1999. For the twelve months ended June
30, 1999, the Preferred  Shareholders received a total distribution of $2.00 per
share, which is the annual dividend rate on the Preferred Shares.

DAILY NAVS NOW DISTRIBUTED BY NASDAQ

      Since our inception, we have made the net asset value available on nightly
recordings  through  1-800-GABELLI.  Now, Nasdaq is also disseminating the daily
per share net asset values (NAVs) for the Gabelli  Convertible  Securities Fund,
which is traded on the New York Stock Exchange. The NAV ticker symbol via Nasdaq
is "XGCVX."

      The NAVs are  available  through  any stock  quote  lookup  service and on
broker  Nasdaq  level one  terminals.  The  dissemination  of daily NAVs  allows
investors  and brokers to better track the long-term  performance  of the Fund's
underlying  portfolio.  We support Nasdaq's efforts in making  closed-end funds'
NAVs available on a daily basis.

NO COMMISSION PURCHASES

      When the  Convertible  Securities  Fund converted to closed-end  status on
March 31, 1995, we offered  shareholders the opportunity to sell their shares at
no commission for up to two years.  On March 31, 1997, this ability to sell your
convertible  shares at no  commission  expired.  However,  we have  extended for
another year, through December 31, 1999, our offer to shareholders to buy shares
through  our  Voluntary  Cash  Purchase  Plan  at no  commission.  This  Plan is
available  every  month.  Please see the details of this Plan at the end of this
report.

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].

                                       12


<PAGE>


IN CONCLUSION

      The unique  characteristics  of convertible  securities make them an ideal
investment  vehicle  for  conservative  investors.  Our highly  selective  value
oriented  approach  shapes  a  portfolio  with  high  yields  and the  realistic
potential  for  meaningful  capital  appreciation  as well.  This  quarter,  our
portfolio's  higher yield and the superior relative  performance of value stocks
combined to produce attractive absolute and relative returns.  Going forward, we
believe our bias to value and smaller company convertibles will continue to work
to our advantage.

                                   Sincerely,

                                   /s/ Mario J. Gabelli
                                   --------------------
                                   MARIO J. GABELLI
                                   President and
                                   Chief Investment Officer

July 30, 1999

================================================================================

                          TOP TEN CONVERTIBLE HOLDINGS
                                  JUNE 30, 1999

Sprint ($1.50 Cv. Pfd., Ser. 1; $1.50 Cv. Pfd., Ser. 2; 8.25% Cv. Pfd.)
American Bankers Insurance ($3.125 Cv. Pfd., Ser. B)
Mark IV Industries (Sub. Deb. Cv., 4.75%, 11/01/04)
Citizens Utilities (5.00% Cv. Pfd.)
WHX Corp. (6.50% Cv. Pfd., Ser. A; $3.75 Cv. Pfd., Ser. B)
Cendant Corp. (1.30% Cv. Pfd., 7.50% Cv. Pfd.)
MediaOne Group (4.50% Cv. Pfd., Ser. D)
Hilton Hotels Corp. (Sub. Deb. Cv., 5.00%, 05/15/06)
Fieldcrest Cannon Inc. (Sub. Deb. Cv., 6.00%, 03/15/12)
Atlantic Richfield Co. ($2.80 Cv. Pfd.)

================================================================================

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

                                       13


<PAGE>

THE GABELLI CONVERTIBLE SECURITIES FUND, INC.
PORTFOLIO OF INVESTMENTS -- JUNE 30, 1999 (UNAUDITED)
================================================================================

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

             CONVERTIBLE CORPORATE BONDS -- 22.49%

             AUTOMOTIVE: PARTS AND ACCESSORIES-- 0.26%
$   550,000  Exide Corp. Sub. Deb. Cv.
                2.90%, 12/15/05 ................  $    374,430     $    330,000
                                                  ------------     ------------

             AVIATION: PARTS AND SERVICES -- 1.05%
  1,330,000  Kaman Corp. Sub. Deb. Cv.
                6.00%, 03/15/12 ................     1,293,248        1,325,013
                                                  ------------     ------------

             BUSINESS SERVICES -- 0.69%
    900,000  BBN Corp. Sub. Deb. Cv.
                6.00%, 04/01/12 (a) . ..........       880,222          870,021
                                                  ------------     ------------

             CABLE -- 0.31%
    500,000  Rogers Communications Inc.
                Sub. Deb. Cv.
                2.00%, 11/26/05 ................       333,696          385,625
                                                  ------------     ------------

             COMPUTER SOFTWARE AND SERVICES -- 1.90%
  2,250,000  PLATINUM Technology International Inc.
                Sub. Deb. Cv.
                6.25%, 12/15/02 ................     2,216,262        2,264,063
    250,000  QuadraMed Corp. Sub. Deb. Cv.
                5.25%, 05/01/05 ................       162,526          136,250
                                                  ------------     ------------
                                                     2,378,788        2,400,313
                                                  ------------     ------------

             CONSUMER PRODUCTS -- 2.33%
  3,500,000  Fieldcrest Cannon Inc.
                Sub. Deb. Cv.
                6.00%, 03/15/12 ................     2,540,741        2,480,625
    750,000  Standard Commercial Corp.
                Sub. Deb. Cv.
                7.25%, 03/31/07 ................       615,507          457,500
                                                  ------------     ------------
                                                     3,156,248        2,938,125
                                                  ------------     ------------
             CONSUMER SERVICES -- 0.07%
    100,000  Ogden Corp. Sub. Deb. Cv.
                6.00%, 06/01/02 ................        99,444           93,000
                                                  ------------     ------------

             ELECTRONIC EQUIPMENT -- 1.32%
             ASM Lithography Holding Cv.
     40,000    2.50%, 04/09/05 .................        17,991           20,216
     10,000    2.50%, 04/09/05 (b) .............         4,454            5,054
  1,700,000  Trans-Lux Corp. Sub. Deb. Cv.
                7.50%, 12/01/06 ................     1,631,244        1,640,500
                                                  ------------     ------------
                                                     1,653,689        1,665,770
                                                  ------------     ------------

             ENERGY AND UTILITIES -- 0.95%
    100,000  Halter Marine Group Inc.
                Sub. Deb. Cv.
                4.50%, 09/15/04.................        56,223          $61,000
  1,100,000  Moran Energy Inc.
                Sub. Deb. Cv.
                8.75%, 01/15/08 ................       757,842        1,039,118
    100,000  Texaco Capital Inc. Cv.
                3.50%, 08/05/04 ................       100,462          101,500
                                                  ------------     ------------
                                                       914,527        1,201,618
                                                  ------------     ------------

             ENTERTAINMENT -- 0.82%
    200,000  Kushner-Locke Co.
                Sub. Deb. Cv.
                8.00%, 12/15/00 (a) . ..........       171,618          222,222
    800,000  Savoy Pictures Entertainment Inc.
                Sub. Deb. Cv.
                7.00%, 07/01/03 ................       745,759          807,000
                                                  ------------     ------------
                                                       917,377        1,029,222
                                                  ------------     ------------

             EQUIPMENT AND SUPPLIES -- 4.65%
  1,285,000  Intermagnetics General Corp.
                Sub. Deb. Cv.
                5.75%, 09/15/03 (b) . ..........     1,260,443          905,925
  1,072,000  Kollmorgen Corp.
                Sub. Deb. Cv.
                8.75%, 05/01/09 ................       847,664        1,073,340
  4,000,000  Mark IV Industries
                Sub. Deb. Cv.
                4.75%, 11/01/04 ................     3,456,484        3,529,999
    210,000  Robbins & Myers Inc.
                Sub. Deb. Cv.
                6.50%, 09/01/03 ................       204,947          204,750
    150,000  Thermo Electron Corp.
                Sub. Deb. Cv.
                4.25%, 01/01/03 (b) . ..........       135,396          135,188
                                                  ------------     ------------
                                                     5,904,934        5,849,202
                                                  ------------     ------------

             FOOD AND BEVERAGE -- 1.96%
    110,000  Boston Chicken Inc.
                Sub. Deb. Cv.
                7.75%, 05/01/04+ ...............        14,081            5,500
    100,000  Chiquita Brands
                International Inc. Cv.
                7.00%, 03/28/01 ................        97,188           92,000
             Chock Full o' Nuts Corp.
                Sub. Deb. Cv.
  1,000,000     7.00%, 04/01/12 ................       772,418        1,240,000
    865,000     8.00%, 09/15/06 ................       861,291        1,133,150
                                                  ------------     ------------
                                                     1,744,978        2,470,650
                                                  ------------     ------------

                                       14

<PAGE>


THE GABELLI CONVERTIBLE SECURITIES FUND, INC.
PORTFOLIO OF INVESTMENTS (CONTINUED)-- JUNE 30, 1999 (UNAUDITED)
================================================================================

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


             CONVERTIBLE CORPORATE BONDS  (CONTINUED)

             HEALTH CARE -- 0.57%
 $  750,000  Ivax Corp. Deb. Cv.
                6.50%, 11/15/01 ................  $    679,838     $    723,750
                                                  ------------     ------------

             HOTELS AND GAMING -- 2.11%
  2,900,000  Hilton Hotels Corp.
                Sub. Deb. Cv.
                5.00%, 05/15/06 ................     2,706,962        2,660,750
                                                  ------------     ------------

             METALS AND MINING -- 0.22%
    500,000  Coeur d'Alene Mines Corp.
                Sub. Deb. Cv.
                6.00%, 06/10/02 ................       464,083          282,500
                                                  ------------     ------------

             PAPER AND FOREST PRODUCTS -- 0.28%
    200,000  Riverwood International Corp.
                Sub. Deb. Cv.
                6.75%, 09/15/03 ................       199,771          230,800
    150,000  Thermo Fibertek Inc. Cv.
                4.50%, 07/15/04 (b) . ..........       129,755          126,000
                                                  ------------     ------------
                                                       329,526          356,800
                                                  ------------     ------------

             PUBLISHING -- 0.83%
    700,000  News America Holdings Inc.
                Sub. Deb. Cv.
                Zero Cpn., 03/31/02 . ..........       567,980          959,000
     50,000(c) United News & Media plc
                Sub. Deb. Cv.
                6.125%, 12/03/03 ...............        86,568           83,055
                                                  ------------     ------------
                                                       654,548        1,042,055
                                                  ------------     ------------

             REAL ESTATE AND DEVELOPMENT -- 0.08%
    125,000  Rockefeller Center Properties Inc.
                Sub. Deb. Cv.
                Zero Cpn., 12/31/00 . ..........       104,276          100,000
                                                  ------------     ------------

             RETAIL -- 1.65%
     60,000  Costco Companies Inc.
                Sub. Deb. Cv.
                Zero Cpn., 08/19/17 . ..........        41,462           56,325
    100,000  JumboSports Inc.
                Sub. Deb. Cv.
                4.25%, 11/01/00+ ...............        41,283            5,250
  2,000,000  Nine West Group Inc.
                Sub. Deb. Cv.
                5.50%, 07/15/03 ................     1,805,438        2,012,500
                                                  ------------     ------------
                                                     1,888,183        2,074,075
                                                  ------------     ------------

             TELECOMMUNICATIONS -- 0.07%
             Amnex Inc. Sub. Deb. Cv.
    $30,000     8.50%, 09/25/02 ................        20,291           $1,347
     50,000     8.50%, 09/25/02 (b) . ..........        50,000            2,245
     50,000  Telefonica Europe BV
                Sub. Deb. Cv.
                2.00%, 07/15/02 ................        50,000           81,875
                                                  ------------     ------------
                                                       120,291           85,467
                                                  ------------     ------------

             TRANSPORTATION -- 0.37%
    440,000  Greyhound Lines Inc.
                Sub. Deb. Cv.
                8.50%, 03/31/07 ................       272,925          440,000
    140,000  WorldCorp Inc.
                Sub. Deb. Cv.
                7.00%, 05/15/04+ ...............       131,280           21,000
                                                  ------------     ------------
                                                       404,205          461,000
                                                  ------------     ------------

             TOTAL CONVERTIBLE
             CORPORATE BONDS ...................    27,003,493       28,344,956
                                                  ------------     ------------

     SHARES
     ------

             CONVERTIBLE PREFERRED STOCKS -- 30.88%

             AVIATION: PARTS AND SERVICES -- 1.58%
             Coltec Capital Trust
     25,000     5.25% Cv. Pfd. .................     1,032,875        1,187,500
     17,000     5.25% Cv. Pfd. (b) .............       802,500          807,500
                                                  ------------     ------------
                                                     1,835,375        1,995,000
                                                  ------------     ------------

             BROADCASTING -- 0.28%
      9,200  Granite Broadcasting Corp.
                $1.938 Cv. Pfd. ................       386,020          347,300
                                                  ------------     ------------

             CABLE -- 2.85%
      3,500  CSC Holdings Inc.
                8.50% Cv. Pfd. Ser. 1 ..........        84,963          378,000
     18,000  MediaOne Group
                4.50% Cv. Pfd. Ser. D ..........       915,084        2,696,625
      1,500  TCI Pacific Communications Inc.
                5.00% Cv. Pfd. .................       134,838          512,493
                                                  ------------     ------------
                                                     1,134,885        3,587,118
                                                  ------------     ------------

             CONSUMER SERVICES -- 2.22%
             Cendant Corp.
     90,000     1.30% Cv. Pfd. .................     2,489,615        2,621,249
      5,000     7.50% Cv. Pfd. .................       147,750          172,188
      8,000  Loewen Group Inc.
                6.00% Cv. Pfd. Ser. C ..........        80,917            9,189
                                                  ------------     ------------
                                                     2,718,282        2,802,626
                                                  ------------     ------------

                                       15

<PAGE>

THE GABELLI CONVERTIBLE SECURITIES FUND, INC.
PORTFOLIO OF INVESTMENTS (CONTINUED)-- JUNE 30, 1999 (UNAUDITED)
================================================================================

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

             CONVERTIBLE PREFERRED STOCKS  (CONTINUED)

             DIVERSIFIED INDUSTRIAL -- 0.21%
      1,400  GATX Corp.
                $2.50 Cv. Pfd. .................      $136,020         $266,000
                                                  ------------     ------------

             ENERGY AND UTILITIES -- 1.91%
      6,000  Atlantic Richfield Co.
                $2.80 Cv. Pfd. .................     1,600,963        2,412,750
                                                  ------------     ------------

             ENTERTAINMENT -- 0.12%
      4,500  Metromedia International
               Group Inc.
                7.25% Cv. Pfd. .................       170,031          156,938
                                                  ------------     ------------

             EQUIPMENT AND SUPPLIES -- 1.91%
     25,000  Sequa Corp.
                $5.00 Cv. Pfd. .................     1,927,692        2,412,500
                                                  ------------     ------------

             FINANCIAL SERVICES -- 3.49%
     40,000  American Bankers Insurance
                $3.125 Cv. Pfd. Ser. B .........     4,378,825        4,374,999
      1,000  Merrill Lynch & Co.
                6.25% Cv. Pfd. .................        24,050           20,438
                                                  ------------     ------------
                                                     4,402,875        4,395,437
                                                  ------------     ------------

             FOOD AND BEVERAGE -- 0.20%
      5,000  Seagram Co.
                7.50% Cv. Pfd. .................       250,625          249,688
                                                  ------------     ------------

             IRON/STEEL -- 2.25% WHX Corp.
     45,000     $3.75 Cv. Pfd. Ser. B ..........     1,953,443        1,445,625
     43,000     6.50% Cv. Pfd. Ser. A ..........     2,071,981        1,384,063
                                                  ------------     ------------
                                                     4,025,424        2,829,688
                                                  ------------     ------------

             PAPER AND FOREST PRODUCTS -- 1.71%
     34,500  Sealed Air Corp.
                $2.00 Cv. Pfd. Ser. A ..........     1,435,100        2,156,250
                                                  ------------     ------------

             PUBLISHING -- 0.44%
     15,000  Reader's Digest
                $1.9336 Cv. Pfd. ...............       382,588          555,000
                                                  ------------     ------------

             RETAIL -- 0.21% 2,500 CVS Corp.
                6.00% Cv. Pfd. .................       231,625          227,813
      2,000  Republic Industries Inc.
                6.50% Cv. Pfd. .................        30,556           36,000
                                                  ------------     ------------
                                                       262,181          263,813
                                                  ------------     ------------

             SPECIALTY CHEMICALS -- 0.10%
      3,000  Monsanto Co.
                6.50% Cv. Pfd. .................      $138,838         $120,375
                                                  ------------     ------------

             TELECOMMUNICATIONS -- 9.65%
     65,000  Citizens Utilities Co.
                5.00% Cv. Pfd. .................     3,138,586        3,160,625
      8,000  Philippine Long Distance
                $3.50 Cv. Pfd. Ser. III ........       374,069          416,000
             Sprint Corp.
      3,000     $1.50 Cv. Pfd. Ser. 1 ..........       301,100        1,215,000
      2,200     $1.50 Cv. Pfd. Ser. 2 ..........       187,510          924,000
     74,000     8.25% Cv. Pfd. .................     2,824,819        6,437,999
                                                  ------------     ------------
                                                     6,826,084       12,153,624
                                                  ------------     ------------

             WIRELESS COMMUNICATIONS -- 1.75%
      8,000  Omnipoint Corp.
                7.00% Cv. Pfd. .................       241,080          435,000
     12,000  Vodafone AirTouch plc
                4.25% Cv. Pfd. Cl. C ...........       560,930        1,772,250
                                                  ------------     ------------
                                                       802,010        2,207,250
                                                  ------------     ------------

             TOTAL CONVERTIBLE
             PREFERRED STOCKS                       28,434,993       38,911,357
                                                  ------------     ------------

             COMMON STOCKS -- 16.02%

             AVIATION: PARTS AND SERVICES-- 0.22%
     18,000     Kaman Corp. ....................       181,321          282,375
                                                  ------------     ------------

             BUSINESS SERVICES-- 2.75%
     80,000     Paymentech Inc.+ ...............     2,004,000        2,030,000
     50,000     Rental Services Corp.+ . .......     1,430,626        1,431,250
                                                  ------------     ------------
                                                     3,434,626        3,461,250
                                                  ------------     ------------

             DIVERSIFIED INDUSTRIAL-- 0.09%
     10,000     Thermo Power Corp.+ ............       116,325          116,563
                                                  ------------     ------------

             ENERGY AND UTILITIES-- 5.86%
     20,000     AGL Resources Inc. .............       361,010          368,750
     12,000     Central Hudson Gas and
                Electric Corp. .................       490,975          504,000
     16,500     Cilcorp Inc. ...................     1,004,813        1,031,250
      8,000     Commonwealth Energy System .....       317,210          336,000
      4,000     New England Electric System ....       192,325          200,500
     55,000     Orange & Rockland Utilities ....     3,065,614        3,214,062
     60,000     Southwest Gas Corp. ............     1,583,223        1,717,500
                                                  ------------     ------------
                                                     7,015,170        7,372,062
                                                  ------------     ------------

                                       16

<PAGE>

THE GABELLI CONVERTIBLE SECURITIES FUND, INC.
PORTFOLIO OF INVESTMENTS (CONTINUED)-- JUNE 30, 1999 (UNAUDITED)
================================================================================

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

             COMMON STOCKS  (CONTINUED)

             EQUIPMENT AND SUPPLIES -- 0.42%
  $   4,537     Case Corp. .....................  $    118,644     $    218,343
     50,000     Fedders Corp. Cl. A ............       310,916          306,250
                                                  ------------     ------------
                                                       429,560          524,593
                                                  ------------     ------------

             FINANCIAL SERVICES -- 2.18%
     38,000  American Bankers
                Insurance Group ................     2,244,730        2,068,625
     20,000     Argonaut Group Inc. ............       533,139          480,000
      3,000     Republic New York Corp. ........       204,525          204,563
                                                  ------------     ------------
                                                     2,982,394        2,753,188
                                                  ------------     ------------

             RETAIL -- 0.38%
     40,000     Food Lion Inc. Cl. A ...........       320,246          475,000
                                                  ------------     ------------

             SHIPBUILDING -- 0.87%
     28,000     Avondale Industries Inc.+ ......     1,069,740        1,092,000
                                                  ------------     ------------

             TELECOMMUNICATIONS -- 0.61%
     48,276  Rogers Communications
                Inc. Cl. B+ ....................       681,112          771,412
                                                  ------------     ------------

             WIRELESS COMMUNICATIONS -- 2.65%
     16,926     Vodafone AirTouch plc, ADR .....     1,101,622        3,334,422
                                                  ------------     ------------

             TOTAL COMMON STOCKS ...............    17,332,116       20,182,865
                                                  ------------     ------------

             PREFERRED STOCKS -- 0.02%

             CABLE -- 0.02%
      1,000  MediaOne Financing
                Trust II Pfd. ..................        26,800           26,500
                                                  ------------     ------------

   PRINCIPAL
    AMOUNT
   --------

             CORPORATE BONDS -- 1.97%

             ENTERTAINMENT-- 1.97%
$ 2,400,000  Viacom Inc.
                8.00%, 07/07/06 ................     2,403,996        2,481,000
                                                  ------------     ------------

             U.S. GOVERNMENT OBLIGATIONS -- 34.34%
 43,607,000  U.S. Treasury Bills,
                4.19% to 4.73% ++,
                due 07/01/99 to 09/30/99 .......    43,272,922       43,273,617
                                                  ------------     ------------

TOTAL INVESTMENTS--105.72% .....................   118,474,320      133,220,295
                                                  ============     ------------

OTHER ASSETS, LIABILITIES AND
  LIQUIDATION VALUE OF CUMULATIVE
  PREFERRED STOCK-- (29.53)% ...................                  $(37,210,788)
                                                                  -------------

NET ASSETS -- COMMON STOCK -- 76.19%
  (7,916,645  common shares outstanding) .......                     96,009,507
                                                                  -------------
NET ASSETS - CUMULATIVE PREFERRED
  STOCK -- 23.81%
  (1,200,000 preferred shares outstanding) .....                     30,000,000
                                                                  -------------

TOTAL NET ASSETS -- 100.00% ....................                  $ 126,009,507
                                                                  =============

NET ASSET VALUE PER COMMON SHARE
  ($96,009,507 / 7,916,645 shares outstanding)                           $12.13
                                                                         ======


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

             SHORT POSITIONS
             COMMON STOCKS
      8,188     Kushner-Locke Co. ..............       105,568           53,222
     25,000     Vodafone AirTouch plc, ADR .....     5,149,973        4,925,000
                                                  ------------     ------------
                                                  $  5,255,541     $  4,978,222
                                                  ============     ============

- ----------
For Federal tax purposes:
      Aggregate cost                                               $118,474,320
                                                                   ============
      Gross unrealized  appreciation - investments                 $ 17,458,976
      Gross unrealized appreciation  - short  positions                 277,319
      Gross unrealized depreciation - investments                    (2,713,001)
                                                                   ------------
      Net unrealized appreciation                                  $ 15,023,294
                                                                   ============

(a)   Security fair valued as determined by the Board of Directors.
(b)   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,
      1999, Rule 144A securities amounted to $1,981,912 or 1.6% of net assets.
(c)   Principal  amount  denoted  in  British  Pounds.
+     Non-income producing security.
++    Yields represent the effective yield to maturity on the date of purchase.
ADR   - American Depositary Receipt.

                See accompanying notes to financial statements.

                                       17

<PAGE>


                  THE GABELLI CONVERTIBLE SECURITIES FUND, INC.

STATEMENT OF ASSETS AND LIABILITIES
JUNE 30, 1999 (UNAUDITED)
- --------------------------------------------------------------------------------

ASSETS:
   Investments, at value (Cost $118,474,320) ..............       $133,220,295
   Foreign currency, at value (Cost $3,617) ...............              3,900
   Receivable for investments sold ........................             19,835
   Dividends and interest receivable ......................            703,851
                                                                  ------------
      TOTAL ASSETS ........................................        133,947,881
                                                                  ------------
LIABILITIES:
   Payable for investments purchased ......................          1,758,525
   Payable for dividends ..................................             26,667
   Payable for investment advisory fees ...................            227,513
   Payable to custodian ...................................            766,544
   Securities sold short ..................................          4,978,222
   Other accrued expenses .................................            180,903
                                                                  ------------
      TOTAL LIABILITIES ...................................          7,938,374
                                                                  ------------
      NET ASSETS ..........................................       $126,009,507
                                                                  ============
   NET ASSET VALUE PER COMMON SHARE
   ($96,009,507 / 7,916,645 shares issued
   and outstanding; 100,000,000 shares
   authorized of $0.001 par value) ........................             $12.13
                                                                        ======
NET ASSETS CONSIST OF:
   Cumulative Preferred Stock (8.00%,
      $25 liquidation value, $0.001 par value,
      2,000,000 shares authorized,1,200,000 shares
      issued and outstanding) redemption value ............       $ 30,000,000
   Capital stock, at par value ............................              7,917
   Additional paid-in capital .............................         82,073,596
   Accumulated distributions in excess of
      net investment income ...............................            (99,688)
   Accumulated distributions in excess of net realized
      gain on investments and foreign currency
      transactions ........................................           (995,543)
   Net unrealized appreciation on investments and
      foreign currency transactions .......................         15,023,225
                                                                  ------------
             TOTAL NET ASSETS .............................       $126,009,507
                                                                  ============

STATEMENT OF OPERATIONS
FOR THE SIX MONTHS ENDED JUNE 30, 1999 (UNAUDITED)
- --------------------------------------------------------------------------------

INCOME:
   Dividends ..............................................       $    916,819
   Interest ...............................................          1,720,477
                                                                  ------------
      TOTAL INVESTMENT INCOME .............................          2,637,296
                                                                  ------------
EXPENSES:
   Investment advisory fees ...............................            610,206
   Shareholder services fees ..............................             69,789
   Legal and audit fees ...................................             57,747
   Shareholder report expenses ............................             56,820
   Directors' fees ........................................             39,168
   Custodian fees .........................................             19,105
   Miscellaneous expenses .................................             67,202
                                                                  ------------
      TOTAL EXPENSES ......................................            920,037
                                                                  ------------
      NET INVESTMENT INCOME ...............................          1,717,259
                                                                  ------------
NET REALIZED AND UNREALIZED
   GAIN ON INVESTMENTS:
   Net realized gain on investments and
      foreign currency transactions .......................          1,929,392
   Net change in unrealized appreciation
      on investments and foreign currency
      transactions ........................................          6,051,402
                                                                  ------------
   NET REALIZED AND UNREALIZED GAIN ON
      INVESTMENTS .........................................          7,980,794
                                                                  ------------
NET INCREASE IN NET ASSETS RESULTING
   FROM OPERATIONS ........................................       $  9,698,053
                                                                  ------------

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

<TABLE>
<CAPTION>

                                                                                           SIX MONTHS ENDED   YEAR ENDED
                                                                                             JUNE 30, 1999   DECEMBER 31,
                                                                                              (UNAUDITED)        1998
                                                                                            ---------------  ------------
OPERATIONS:
<S>                                                                                         <C>              <C>
   Net investment income                                                                    $  1,717,259     $  4,165,471
   Net realized gain on investments and foreign currency transactions                          1,929,392        5,408,607
   Net change in unrealized appreciation of investments and foreign currency transactions      6,051,402         (277,461)
                                                                                            ------------     ------------
      Net increase in net assets resulting from operations                                     9,698,053        9,296,617
                                                                                            ------------     ------------
DISTRIBUTIONS TO PREFERRED SHAREHOLDERS:
   Net investment income                                                                        (408,840)      (1,008,552)
   Net realized gains                                                                           (791,160)      (1,391,448)
                                                                                            ------------     ------------
      TOTAL DISTRIBUTIONS                                                                     (1,200,000)      (2,400,000)
                                                                                            ------------     ------------
DISTRIBUTIONS TO COMMON SHAREHOLDERS:
   Net investment income                                                                      (1,308,419)      (3,004,493)
   Net realized gains                                                                           (857,011)      (3,927,271)
   Distributions in excess of net investment income                                                   --          (68,292)
   Distributions in excess of net realized gains                                                (995,543)        (312,617)
                                                                                            ------------     ------------
      TOTAL DISTRIBUTIONS                                                                     (3,160,973)      (7,312,673)
                                                                                            ------------     ------------
CAPITAL SHARE TRANSACTIONS-- NET:                                                                (53,385)      (1,240,142)
                                                                                            ------------     ------------
   Net increase / (decrease) in net assets                                                     5,283,695       (1,656,198)
NET ASSETS
   Beginning of Period                                                                       120,725,812      122,382,010
                                                                                            ------------     ------------
   End of Period                                                                            $126,009,507     $120,725,812
                                                                                            ============     ============
</TABLE>

                 See accompanying notes to financial statements.

                                       18

<PAGE>

THE GABELLI CONVERTIBLE SECURITIES FUND, INC.
NOTES TO FINANCIAL STATEMENTS (UNAUDITED)
===============================================================================

1. ORGANIZATION. The Gabelli Convertible Securities Fund, Inc. (the "Fund") is a
closed-end  diversified management investment company whose investment objective
is to seek a high level of total return  through a combination of current income
and capital appreciation by investing in convertible securities. The Corporation
was  incorporated  in Maryland on December  19, 1988 as an open-end  diversified
management  investment  company and commenced  operations  on July 3, 1989.  The
Board of Directors,  upon approval at a special meeting of shareholders  held on
February 17, 1995,  voted to approve the  conversion  of the Fund to  closed-end
status, effective March 31, 1995.

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).  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 the Adviser.  When
market quotations are not readily available,  portfolio securities 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.  Short  term  debt  instruments  having a greater
maturity 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
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  Directors.  Under  the terms of a
typical  repurchase  agreement,  the Fund takes possession of an underlying debt
obligation subject to an obligation of the seller to repurchase, and the Fund to
resell, the obligation at an agreed-upon price and time, thereby determining the
yield  during  the Fund's  holding  period.  The Fund will  always  receive  and
maintain  securities  as  collateral  whose  market  value,   including  accrued
interest,  will be at least equal to 100% of the dollar  amount  invested by the
Fund in each agreement. The Fund will make payment for such securities only upon
physical  delivery or upon evidence of book entry  transfer of the collateral to
the  account of the  custodian.  To the extent that any  repurchase  transaction
exceeds one business day, the value of the collateral is  marked-to-market  on a
daily basis to maintain 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.

FORWARD  FOREIGN  CURRENCY  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 currency contracts are valued at the
forward  rate and are  marked-to-market  daily.  The  change in market  value is
recorded by the Fund as an unrealized gain or loss. 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 currency 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
currency  contracts  limit the risk of loss due to a decline in the value of the
hedged currency, they also limit any potential gain that

                                       19

<PAGE>

THE GABELLI CONVERTIBLE SECURITIES FUND, INC.
NOTES TO FINANCIAL STATEMENTS (CONTINUED)(UNAUDITED)
===============================================================================

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.  At June 30, 1999,  the Fund held no forward
foreign currency contracts.

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  recorded  as
unrealized gains or losses. The Fund recognizes a realized gain or loss when the
contract is closed. At June 30, 1999, 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.

SHORT SALES. The Fund is authorized to engage in short-selling,  which obligates
the Fund to replace the  security  borrowed by  purchasing  the  security at the
current market value sometime in the future.  The Fund would incur a loss if the
price of the security  increases between the date of the short sale and the date
on which the Fund replaces the borrowed security.  The Fund would realize a gain
if the  price of the  security  declines  between  those  dates.  Until the Fund
replaces the borrowed security, the Fund will maintain a segregated account with
cash and/or U.S. Government securities sufficient to cover its short position on
a daily basis.

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.  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  treatment of income and gains
on various  investments  securities  held by the Fund,  timing  differences  and
differing  characterization of distributions made by the Fund.  Distributions to
shareholders of Cumulative  Preferred Stock are accrued on a daily basis and are
determined as described in Note 3.

PROVISION  FOR INCOME  TAXES.  The Fund has qualified and 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.

                                       20

<PAGE>


THE GABELLI CONVERTIBLE SECURITIES FUND, INC.
NOTES TO FINANCIAL STATEMENTS (CONTINUED)(UNAUDITED)
===============================================================================

3. CAPITAL.  The Articles of Incorporation,  dated December 19, 1988, permit the
Fund to issue  100,000,000  shares  (par  value  $0.001)  of  common  stock.  In
addition,  the Fund has been  authorized  to  issue up to  2,000,000  shares  of
Preferred  Stock of which  1,200,000  shares has been  designated  as $0.001 par
value 8% Cumulative Preferred Stock. On May 15, 1997, the Fund received proceeds
of $28,593,000 (net of offering costs and underwriting  discounts of $1,407,000)
from the public  offering of 1,200,000  shares of  Cumulative  Preferred  Stock.
Dividends on shares of the Cumulative  Preferred Stock are cumulative.  The Fund
is required to meet certain asset  coverage tests with respect to the Cumulative
Preferred  Stock.  If the Fund  fails to meet  these  requirements  and does not
correct such  failure,  the Fund may be required to redeem,  in part or in full,
the Cumulative Preferred Stock at a redemption price of $25.00 per share plus an
amount equal to the accumulated and unpaid dividends  whether or not declared on
such shares in order to meet these requirements.  Additionally,  failure to meet
the  foregoing  asset  requirement  could  restrict  the  Fund's  ability to pay
dividends to Common Shareholders and could lead to sales of portfolio securities
at inopportune times. The Preferred Stock is callable at the redemption price at
the option of the Fund  after May 15,  2002.  This  Cumulative  Preferred  Stock
introduced  leverage into the capital structure of the Fund. This leverage tends
to magnify both the risks and opportunities to Common Shareholders.  At June 30,
1999, the 1,200,000 shares of 8% Cumulative  Preferred Stock outstanding accrued
dividends in the amount of $19,726. The income received on the Fund's assets may
vary in a  manner  unrelated  to the  fixed  rate,  which  could  have  either a
beneficial or detrimental impact on net investment income and gains available to
Common Shareholders.

The Fund shall not declare  dividends or make other  distributions  on shares of
Common  Stock or  purchase  any such  shares if at the time of the  declaration,
distribution  or  purchase,  asset  coverage  with  respect  to the  outstanding
Preferred Stock would be less than 200%.

The holders of Preferred  Stock have voting  rights  equivalent  to those of the
holders of Common Stock (one vote per share) and will vote together with holders
of shares of Common Stock as a single class. In addition, the Investment Company
Act of 1940 requires  that,  along with approval of the holders of a majority of
any  outstanding  common  shares,  approval  of the holders of a majority of any
outstanding preferred shares, voting separately as a class, would be required to
(a) adopt any plan of  reorganization  that would adversely affect the Preferred
Stock, and (b) take any action requiring a vote of security holders,  including,
among other  things,  changes in the Fund's  subclassification  as a  closed-end
investment company or changes in its fundamental investment restrictions.

The  Adviser  has been  authorized  to  repurchase  on  behalf of the Fund up to
250,000  shares of the Fund in the open market,  whenever the shares are trading
at a  discount  to net asset  value of ten per cent or more.  For the six months
ended June 30, 1999, the Fund repurchased  4,900 shares at a cost of $53,386 and
at an average discount of 10.20%.

4.  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.

The Adviser has agreed not to accrue the management fee on the  incremental  net
assets  attributable to the liquidation value of the Cumulative  Preferred Stock
if the total net asset value return of the common shares of the Fund,  including
distributions  and the  advisory fee subject to  reduction,  does not exceed the
stated dividend rate of the Cumulative  Preferred  Stock.  During the six months
ended  June 30,  1999,  the Fund has  achieved  a total  return in excess of the
stated dividend rate and, thus, such management fees were earned.

5.  PORTFOLIO  SECURITIES.  Purchases and sales of securities for the six months
ended June 30, 1999, other than short-term  securities,  aggregated  $77,737,512
and $68,097,908, respectively.

6. TRANSACTIONS WITH AFFILIATES.  During the six months ended June 30, 1999, the
Fund paid brokerage  commissions  of $44,935 to Gabelli & Company,  Inc. and its
affiliates.

                                       21


<PAGE>


THE GABELLI CONVERTIBLE SECURITIES FUND, INC.
FINANCIAL HIGHLIGHTS
================================================================================
Selected data for a share of capital stock outstanding throughout each period:
<TABLE>
<CAPTION>

                                                                  SIX MONTHS ENDED            YEAR ENDED DECEMBER 31,
                                                                    JUNE 30, 1999  ----------------------------------------------
                                                                     (UNAUDITED)    1998      1997      1996      1995      1994
                                                                     -----------    ----      ----      ----      ----      ----
OPERATING PERFORMANCE:
<S>                                                                     <C>        <C>       <C>       <C>       <C>       <C>
Net asset value, beginning of year .................................    $11.45     $11.48    $11.08    $11.01    $10.60    $11.52
                                                                        ------     ------    ------    ------    ------    ------
   Net investment income ...........................................      0.22       0.53      0.49      0.49      0.53      0.69
   Net realized and unrealized gain (loss)
      on securities ................................................      1.01       0.65      1.23      0.31      1.03     (0.71)
                                                                        ------     ------    ------    ------    ------    ------
   Total from investment operations ................................      1.23       1.18      1.72      0.80      1.56     (0.02)
                                                                        ------     ------    ------    ------    ------    ------
INCREASE IN NET ASSETS FROM CAPITAL SHARE TRANSACTIONS .............         --      0.01      0.01
                                                                        ------     ------    ------
OFFERING EXPENSES CHARGED TO  ADDITIONAL PAID-IN CAPITAL ...........                          (0.18)
                                                                                             ------
DISTRIBUTIONS:
   PREFERRED SHARES
   Distributions from net investment income ........................     (0.05)     (0.13)    (0.08)       --        --        --
   Distributions from net realized gain on investments .............     (0.10)     (0.17)    (0.11)       --        --        --
   COMMON SHARES
   Distributions from net investment income ........................     (0.17)     (0.38)    (0.40)    (0.49)    (0.53)    (0.69)
   Distributions from net realized gain on investments .............     (0.11)     (0.50)    (0.56)    (0.24)    (0.56)
                                                                                                                            (0.21)
   Distributions in excess of net investment income ................        --      (0.01)       --        --     (0.02)       --
                                                                                                                               --
   Distributions in excess of net realized gains ...................     (0.12)     (0.03)       --        --     (0.01)       --
   Distributions from paid-in capital ..............................        --         --        --        --     (0.03)       --
                                                                        ------     ------    ------    ------    ------    ------
   Total distributions .............................................     (0.55)     (1.22)    (1.15)    (0.73)    (1.15)    (0.90)
                                                                        ------     ------    ------    ------    ------    ------
   NET ASSET VALUE END OF YEAR .....................................    $12.13     $11.45    $11.48    $11.08    $11.01    $10.60
                                                                        ======     ======    ======    ======    ======    ======
   MARKET VALUE, END OF PERIOD .....................................    $11.31     $11.25    $10.31     $9.25    $10.75        --
                                                                        ======     ======    ======    ======    ======    ======
   TOTAL NET ASSET VALUE RETURN + (a) ..............................      9.8%       8.3%     13.5%      8.4%     15.0%    (0.2)%
   Total Investment Return + (b) ...................................      4.1%      18.4%     22.2%    (7.3)%     12.3%        --
RATIOS TO AVERAGE NET ASSETS AND SUPPLEMENTAL DATA:
   Net Assets, end of period (in 000's) ............................  $126,010   $120,726  $122,382   $89,659   $89,137  $112,090
   Net Assets attributable to common shares,
      end of period (in 000's) .....................................   $96,010    $90,726   $92,382   $89,659   $89,137  $112,090
Ratio of net investment income to
   average net assets attributable to common stock .................     3.72%(d)   4.54%     4.23%     4.33%     4.60%     4.77%
Ratio of operating expenses to average net assets
   attributable to common stock (c) ................................     1.99%(d)   1.83%     1.68%     1.45%     1.56%     1.31%
Ratio of operating expenses to average total net assets ............     1.51%(d)   1.38%     1.39%     1.45%     1.56%     1.31%
Portfolio Turnover Rate ............................................      151%       149%      243%      114%      140%       67%
PREFERRED STOCK:
   Liquidation value (in 000's) ....................................   $30,000    $30,000   $30,000        --        --        --
   Total shares outstanding (in 000's) .............................     1,200      1,200     1,200        --        --        --
   Asset coverage per share ........................................      402%       402%      408%        --        --        --
   Liquidation preference per share ................................    $25.00     $25.00    $25.00        --        --        --
   Average market value per share (e) ..............................    $26.45     $26.84    $25.69        --        --        --
</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)   Based on net asset value per share.
(b)   Based on net asset value per share  through  March 31,  1995,  the date of
      conversion of the Fund to closed-end status, and market value thereafter.
(c)   The ratio of  operating  expenses  to average net assets  attributable  to
      common  stock during the fiscal year ended  December  31, 1995  includes a
      current  period  expense  associated  with the  conversion  of the Fund to
      closed-end status.  Without the conversion expense,  this ratio would have
      been  1.28%.  The  ratio of  operating  expenses  to  average  net  assets
      attributable  to common stock for the fiscal year ended  December 31, 1997
      does not include a reduction of expenses for custodian fee credits on cash
      balances  maintained  with the  custodian.  Including  the  custodian  fee
      credit, the ratio of operating expenses to average net assets attributable
      to common stock for the year would have been 1.67%.
(d)   Annualized.
(e)   Based on weekly prices.

                 See accompanying notes to financial statements.

                                       22

<PAGE>

                       AUTOMATIC DIVIDEND REINVESTMENT AND
                          VOLUNTARY CASH PURCHASE PLAN

ENROLLMENT IN THE PLAN

     It  is  the  Policy  of  The  Gabelli  Convertible  Securities  Fund,  Inc.
("Convertible  Securities  Fund")  to  automatically  reinvest  dividends.  As a
"registered"   shareholder  you  automatically   become  a  participant  in  the
Convertible Securities Fund's Automatic Dividend Reinvestment Plan (the "Plan").
The  Plan  authorizes  the  Convertible  Securities  Fund  to  issue  shares  to
participants upon an income dividend or a capital gains distribution  regardless
of whether the shares are trading at a discount or a premium to net asset value.
All distributions to shareholders whose shares are registered in their own names
will be automatically  reinvested  pursuant to the Plan in additional  shares of
the  Convertible  Securities  Fund.  Plan  participants  may  send  their  stock
certificates to State Street Bank and Trust Company ("State  Street") to be held
in their  dividend  reinvestment  account.  Registered  shareholders  wishing to
receive their distribution in cash must submit this request in writing to:

                  The Gabelli Convertible Securities Fund, Inc.
                     c/o State Street Bank and Trust Company
                                  P.O. Box 8200
                              Boston, MA 02266-8200

     Shareholders  requesting this cash election must include the  shareholder's
name and  address as they  appear on the share  certificate.  Shareholders  with
additional questions regarding the Plan or requesting a copy of the terms of the
Plan may contact State Street at 1 (800) 336-6983.

     SHAREHOLDERS  WISHING TO LIQUIDATE  REINVESTED  SHARES held at State Street
Bank must do so in writing or by  telephone.  Please  submit your request to the
above mentioned address or telephone number.  Include in your request your name,
address  and  account  number.  The  cost  to  liquidate  shares  is  $2.50  per
transaction as well as the brokerage commission incurred.  Brokerage charges are
expected to be less than the usual brokerage charge for such transactions.

     If your  shares  are held in the name of a  broker,  bank or  nominee,  you
should contact such institution. If such institution is not participating in the
Plan,  your  account  will  be  credited  with  a cash  dividend.  In  order  to
participate in the Plan through such institution, it may be necessary for you to
have your shares taken out of "street name" and  re-registered in your own name.
Once  registered  in  your  own  name  your  dividends  will  be   automatically
reinvested. Certain brokers participate in the Plan. Shareholders holding shares
in "street name" at participating institutions will have dividends automatically
reinvested.  Shareholders  wishing  a cash  dividend  at such  institution  must
contact their broker to make this change.

     The number of shares of Common Stock  distributed  to  participants  in the
Plan in lieu of cash dividends is determined in the following manner.  Under the
Plan,  whenever the market price of the  Convertible  Securities  Fund's  Common
Stock is equal to or exceeds  net asset  value at the time shares are valued for
purposes of determining the number of shares equivalent to the cash dividends or
capital  gains  distribution,  participants  are issued  shares of Common  Stock
valued at the greater of (i) the net asset value as most recently  determined or
(ii) 95% of the then current market price of the Convertible  Securities  Fund's
Common Stock.  The valuation date is the dividend or  distribution  payment date
or, if that date is not a New York Stock Exchange  trading day, the next trading
day. If the net asset value of the Common Stock at the time of valuation exceeds
the market price of the Common Stock,  participants will receive shares from the
Convertible   Securities  Fund  valued  at  market  price.  If  the  Convertible
Securities Fund should declare a dividend or capital gains distribution  payable
only in cash,  State Street will buy Common Stock in the open market,  or on the
New York Stock Exchange or elsewhere,  for the  participants'  accounts,  except
that State Street will  endeavor to  terminate  purchases in the open market and
cause the  Convertible  Securities  Fund to issue  shares at net asset value if,
following the  commencement  of such  purchases,  the market value of the Common
Stock exceeds the then current net asset value.

                                       23

<PAGE>

     The automatic  reinvestment  of dividends  and capital gains  distributions
will not  relieve  participants  of any  income tax which may be payable on such
distributions.  A participant in the Plan will be treated for Federal income tax
purposes  as  having  received,  on a  dividend  payment  date,  a  dividend  or
distribution in an amount equal to the cash the participant  could have received
instead of shares.

     The  Convertible  Securities  Fund reserves the right to amend or terminate
the Plan as applied to any  voluntary  cash  payments  made and any  dividend or
distribution paid subsequent to written notice of the change sent to the members
of the  Plan at least 90 days  before  the  record  date  for such  dividend  or
distribution.  The Plan also may be amended or  terminated by State Street on at
least 90 days' written notice to participants in the Plan.

VOLUNTARY CASH PURCHASE PLAN

     The  Voluntary   Cash  Purchase  Plan  is  yet  another   vehicle  for  our
shareholders to increase their investment in the Convertible Securities Fund. In
order to participate in the Voluntary Cash Purchase Plan, shareholders must have
their shares registered in their own name.

     Participants  in the Voluntary Cash Purchase Plan have the option of making
additional  cash payments to State Street Bank and Trust Company for investments
in the  Convertible  Securities  Fund shares at the then current  market  price.
Shareholders  may send an amount  from $250 to  $10,000.  State  Street Bank and
Trust  Company will use these funds to purchase  shares in the open market on or
about the 15th of each month.  Beginning June 1, 1999, purchases will be made on
or about the 1st and 15th of each month.  State  Street  Bank and Trust  Company
will charge each  shareholder who participates  $0.75,  plus a pro rata share of
the brokerage commissions.  Brokerage charges for such purchases are expected to
be less than the usual  brokerage  charge for such  transactions.  However,  the
Fund's  Adviser,  Gabelli Funds,  LLC, has arranged that these purchases will be
executed at no commission  through  December 31, 1999. It is suggested  that any
voluntary cash payments be sent to State Street Bank and Trust Company, P.O. Box
8200,  Boston,  MA  02266-8200  such that State Street  receives  such  payments
approximately 10 days before the 15th of the month.  Funds not received at least
five  days  before  the  investment  date  shall be held for  investment  in the
following month. A payment may be withdrawn without charge if notice is received
by State Street Bank and Trust  Company at least 48 hours before such payment is
to be invested.

     For more information regarding the Dividend Reinvestment Plan and Voluntary
Cash Purchase  Plan,  brochures  are  available by calling (914)  921-5070 or by
writing directly to the Convertible Securities Fund.

                                       24

<PAGE>

                             DIRECTORS AND OFFICERS
                  THE GABELLI CONVERTIBLE SECURITIES FUND, INC.
                    ONE CORPORATE CENTER, RYE, NY 10580-1434

DIRECTORS

Mario J. Gabelli, CFA
  CHAIRMAN

E. Val Cerutti
  CHIEF EXECUTIVE OFFICER
  CERUTTI CONSULTANTS, INC.

Felix J. Christiana
  FORMER SENIOR VICE PRESIDENT
  DOLLAR DRY DOCK SAVINGS BANK

Anthony J. Colavita, P.C.
  ATTORNEY-AT-LAW
  ANTHONY J. COLAVITA, P.C.

Dugald A. Fletcher
  PRESIDENT, FLETCHER & COMPANY, INC.

Karl Otto Pohl
  FORMER PRESIDENT, DEUTSCHE BUNDESBANK

Anthony R. Pustorino
  CERTIFIED PUBLIC ACCOUNTANT
  PROFESSOR, PACE UNIVERSITY

Anthonie C. van Ekris
  MANAGING DIRECTOR
  BALMAC INTERNATIONAL, INC.

Salvatore J. Zizza
  CHAIRMAN
  THE BETHLEHEM CORP.

OFFICERS AND PORTFOLIO MANAGERS

Mario J. Gabelli, CFA
  PRESIDENT & CHIEF INVESTMENT OFFICER

Bruce N. Alpert
  VICE PRESIDENT & TREASURER

Peter W. Latartara
  VICE PRESIDENT

A. Hartswell Woodson, III
  ASSOCIATE PORTFOLIO MANAGER

James E. McKee
  SECRETARY

INVESTMENT ADVISOR

Gabelli Funds, LLC
One Corporate Center
Rye, New York  10580-1434

CUSTODIAN, TRANSFER AGENT AND REGISTRAR

State Street Bank and Trust Company

LEGAL COUNSEL

Skadden, Arps, Slate, Meagher & Flom LLP

STOCK EXCHANGE LISTING

                         COMMON      8.00% PREFERRED
                        --------     ---------------
NYSE-Symbol:               GCV           GCV Pr
Shares Outstanding:     7,916,645       1,200,000

The Net Asset Value  appears in the  Publicly  Traded  Funds  column,  under the
heading  "Convertible  Securities  Funds," in Sunday's The New York Times and in
Monday's The Wall Street Journal.

It is also listed in Barron's  Mutual  Funds/Closed  End Funds section under the
heading "Convertible Securities Funds".

The Net Asset Value may be obtained each day by calling (914) 921-5071.

- --------------------------------------------------------------------------------

          For general  information  about the Gabelli Funds,
          call  1-800-GABELLI  (1-800-422-3554),  fax  us at
          914-921-5118,  visit  our  Internet  homepage  at:
          HTTP://WWW.GABELLI.COM,    or    e-mail   us   at:
          [email protected]

- --------------------------------------------------------------------------------


- --------------------------------------------------------------------------------

     Notice is hereby given in  accordance  with Section  23(c) of the
     Investment Company Act of 1940, as amended,  that the Convertible
     Securities  Fund may from  time to time  purchase  shares  of its
     capital stock in the open market when the Convertible  Securities
     Fund shares are trading at a discount of 10% or more from the net
     asset value of the shares

- --------------------------------------------------------------------------------


<PAGE>


THE GABELLI CONVERTIBLE SECURITIES FUND, INC.
One Corporate Center
Rye, NY 10580-1434
(914) 921-5070
http://www.gabelli.com

                       Semi-Annual Report
                       June 30,1999

                                                                     GBFCS 06/99



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