GABELLI EQUITY SERIES FUNDS INC
N-30D, 1998-09-03
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THE GABELLI
CONVERTIBLE
SECURITIES
FUND, INC.

Semi-Annual Report
June 30, 1998

<PAGE>

                                  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>

                                                            [PHOTO]          

                                                         THE GABELLI
                                                             CONVERTIBLE
                                                             SECURITIES
                                                             FUND, INC.

To Our Shareholders,

      In the second  quarter of 1998,  there was a  continuation  of the best of
times for large cap stocks and the worst of times for small cap  stocks.  During
the quarter,  the broad  market,  as measured by the Standard & Poor's (S&P) 500
Index,  rose by 3.3% while  small cap stocks,  as  measured by the Russell  2000
Index,  declined by 4.7%. Bonds rallied in a classic global "flight to quality",
with the yield on the 30 year U.S. Treasury Bond falling to 5.57% in mid-June.

Investment Performance

      For the quarter ended June 30, 1998,  The Gabelli  Convertible  Securities
Fund,  Inc.'s  ("Convertible  Securities  Fund") net asset value was  unchanged,
ending the quarter at $11.66 after  adjusting  for the $0.20 per share  dividend
paid on June 26,  1998.  This  compares  to a  decline  of 1.6%  for the  Lipper
Analytical  Services,  Inc.  Convertible  Securities Fund Index.  For the twelve
months ended June 30, 1998, the Fund increased 13.6%. This is about in line with
the increase of 14.1% for the Lipper Convertible Securities Fund Index over this
period.

      The  three-  and  five-year  average  annual  returns  of the  Convertible
Securities  Fund were 10.5% and 9.3%,  respectively.  Since inception on July 3,
1989 through June 30, 1998, the  Convertible  Securities  Fund achieved a 141.2%
total return which represents an average annual return of 10.3%.

      The Fund's common shares on the New York Stock  Exchange ended the quarter
at $10.9375, up 1.2% for the quarter, up 22.8% for the past twelve months and up
31.7% from its initial price of $11.25 on March 31, 1995 after adjusting for the
reinvestment of dividends  totaling $3.245 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 8% 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 recently  instituted a share  repurchase  program which we discuss later in
this report.

<PAGE>

INVESTMENT RESULTS (a)(c)
- --------------------------------------------------------------------------------
                                                 Quarter
                                    -------------------------------
                                      1st    2nd      3rd     4th      Year
                                      ---    ---      ---     ---      ----
1998:    Net Asset Value .........  $11.87  $11.66    __       __       __
         Total Return ............    5.3%    0.0%    __       __       __
- --------------------------------------------------------------------------------
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, 1998 (a)

    1 Year ...................................................       13.6%
    5 Year ...................................................        9.3%
    Life of Fund (b) .........................................       10.3%
- --------------------------------------------------------------------------------

(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 26, 1998                          $0.200            $11.02
       March 26, 1998                         $0.200            $11.10
       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>

                  [GRAPHIC - DEPICTING INVESTMENT STRATEGIES]

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 9 years at The
Gabelli  Convertible  Securities  Fund and for over 20  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.

      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.


                                       3
<PAGE>

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."

      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.  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.

COMMENTARY

      As hybrids,  convertible  securities  are impacted by the  performance  of
underlying  equities and the prevailing trend in bond prices.  So, to articulate
our outlook for convertibles,  we must provide our perspective on both the stock
and bond markets.

      In compiling our thoughts for this shareholder letter we looked forward by
looking through the rear view mirror. In the process, we witnessed the testimony
of Federal  Reserve Board  Chairman  Alan  Greenspan and we could not say it any
better. To quote Alan . . .

            "Mr.  Chairman  and  members of the  Committee,  I  appreciate  this
      opportunity  to present the Federal  Reserve's  midyear report on monetary
      policy.

            Overall,  the  performance  of  the  U.S.  economy  continues  to be
      impressive.  Over the first part of the year, we experienced further gains
      in output and employment,  subdued prices, and moderate long-term interest
      rates. Important crosscurrents,  however, have been impacting the economy.
      With  labor  markets  very  tight  and  domestic  final  demand  retaining
      considerable   momentum,  the  risks  of  a  pickup  in  inflation  remain
      significant.  But  inventory  investment,  which was quite rapid late last
      year and early this year,  appears to have  slowed,  perhaps  appreciably.
      Moreover,  the economic and financial  troubles in Asian economies are now
      demonstrably  restraining demands for U.S. goods and services -- and those
      troubles could intensify and spread further.  Weighting these forces,  the
      Federal Open Market Committee chose to keep the stance of policy unchanged
      over the first half of 1998. However,  should pressures on labor resources
      begin to show through more  impressively in cost increases,  policy action
      may need to counter  any  associated  tendency  for  prices to  accelerate
      before it under undermines this extraordinary expansion."

            -- Excerpt from the Monetary Policy Testimony and Report to Congress
      Before the Subcommittee on Domestic and  International  Monetary Policy of
      the  Committee  on  Banking  and  Financial   Services,   U.S.   House  of
      Representatives, July 21, 1998.


                                       4
<PAGE>

The "Goldilocks" Economy

      In previous quarters, the "Goldilocks" economy - not too hot, not too cold
provided ballast to the U.S. equity market. Consequently, investors tended to be
complacent about the underlying  fundamentals for stocks.  The perception of the
strength  of the bull  market may have been  somewhat  overblown.  Over the last
three  months,  a number of stocks have  swooned in  response to early  earnings
warnings,  threats  from  the  Justice  Department  and  the  latent  impact  of
south-east Asia's financial  malaise.  Even so, the Federal Reserve Chairman was
rationally  exuberant  over the U.S.  economy and  maintained  interest rates at
current  levels.  Given a negligible  inflation rate, a robust economy and level
interest  rates,  the  overhang  on the  market  was the  weakening  yen and the
mounting  financial  woes in the Far  East.  That  was the case  until  the U.S.
Treasury opened its purse to support the Japanese  currency.  This added life to
an otherwise unstable market.

      With the market fibrillating, it is essential to focus on fundamentals. We
are now into the fifth  year of "The Third Wave of  Takeovers".  Each year,  the
pace of deals has  accelerated.  Within our universe of companies,  we benefited
from  cross-border  transactions,  as with Ahold's pending  acquisition of Giant
Food. We also benefited from  companies  that are  rationalizing  and monetizing
operations, such as Viacom's sale of Simon & Schuster to Pearson.

      For the  balance of the year,  the  overall  market  will  continue  to be
volatile.  Our focus on  fundamentals  should guide us to discover new gems. For
example,  the notion of speed - electronic  commerce - led us to Cablevision and
Readers  Digest.   AT&T's  proposed   purchase  of   Tele-Communications,   Inc.
underscores  the virtues of these  investments.  Indeed,  "dial tone to Webtone"
will be the mantra recited by global telephony in the months ahead.

This is Not Your Grandfather's Bond Market

      The days of simple coupon clipping in the bond market are long gone. Bonds
now react  instantly  and often  dramatically  to any change in the  outlook for
inflation.  While stock market investors worry over the impact of Asian economic
weakness  on  corporate  earnings,  bond  investors  focus on the very  positive
implications Asia's problems have on domestic and global inflation.

      Like stocks,  bonds have also benefited  from favorable  supply and demand
factors.  Due to a declining  federal  budget  deficit and the  prospect for the
first budget  surplus in a generation,  bellwether  U.S.  Treasury Bond issuance
declined  substantially at a time when concern over equity valuations in general
and the  intensifying  Asian  flu  made  bonds  look  more  appealing  for  many
investors.

      Interestingly,  even with the 30 Year  Treasury  Bond yield near  historic
lows, bonds still offer  attractive  "real rates of return"--the  spread between
bond yields and inflation.  This would infer that if inflation  stays at current
levels, bond yields could trend down even further.

Convertible Securities: Having Your Cake and Eating it Too!

      Despite  losing  momentum this quarter,  equity  valuations  remain heady.
Bonds have performed very well and consequently,  yields are way down. What's an
investor  to do? We  suggest  looking  at  convertible  securities.  They  offer
downside  protection should the stock market really correct and yields that have
become more competitive relative to straight bonds. Should the stock market once
again confound the consensus by regaining  momentum,  convertibles will share in
the upside. Convertible securities have never been a wildly popular asset class.
However, in view of the current  situation--high  equity valuations and low bond
yields--convertibles have become particularly attractive.


                                       5
<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  stock  repurchase  programs and
distribution policies, both of which we have instituted.

Stock Repurchase Plan - Q & A

Q:  What is a 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.

Q:  When did the Convertible Securities Fund implement a stock repurchase plan?

      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%.

      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, 1998, 170,800 shares were repurchased in the open market.

      Similarly,  an affiliated  closed-end  fund, The Gabelli Equity Trust, was
the first  company on the New York Stock  Exchange to implement a stock  buyback
program on October 19, 1987,  after the market  crash.  At the time,  the Equity
Trust was trading at a discount to net asset value and  represented an excellent
value for the Trust to  acquire  its own  shares.  This  stock  repurchase  plan
resulted in the purchase of 800,000 shares in the open market from 1987 to 1988.

Q:  What is the benefit of a stock repurchase plan?

      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.

      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.

Distribution Policy - Q & A

Q:  What is a distribution policy?

      A fund with a  distribution  policy is a fund  which  establishes  a fixed
payment  each  year to its  shareholders  as a  percentage  of net  assets  or a
specific dollar amount. For example, a fund with a 10% distribution  policy will
pay  out  10% of its  average  net  assets  every  year,  either  on an  annual,
semi-annual or quarterly basis.

Q:  What is the benefit of a 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.


                                       6
<PAGE>

Q: Why did the Convertible Securities Fund institute an 8% annual distribution
   policy? What are the "mechanics?"

      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. This distribution
policy is similar in structure to the Gabelli Equity Trust, which has employed a
10% annual distribution policy since August of 1988.

      To  illustrate,  the Gabelli  Equity Trust  currently  pays out 10% of its
average net asset value per share. The Fund's normal policy is to make quarterly
distributions  of $0.27 per share at the end of each of the first three calendar
quarters of each year.  The Fund's  distribution  in December for each  calendar
year is an adjusting distribution.  The amount is equal to the greater of 10% of
the  average of the net asset  value per share of the Fund as of the last day of
the four preceding calendar quarters or the minimum distribution requirements of
the Internal Revenue Code.

      In the case of the Gabelli Convertible  Securities Fund, the Fund will pay
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 26, 1998 in line with this 8% annual distribution policy.

Preferred Stock - An Investment For The Future

      On  May  16,  1997,  the  Fund  successfully  completed  its  offering  of
cumulative  preferred  stock which was rated 'AAA' by Standard  and Poor's.  The
Fund issued  1,200,000  Preferred  Shares at $25 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 $27.5625 on June 30,
1998. We thought we would answer some questions about preferred stock.

Q:  What is Preferred Stock?

      Preferred  stock is a form of equity  investment  which has certain rights
that differ from those of common stock.  In our case,  the  preferred  stock was
issued  at $25 per  share  with a fixed  dividend  rate of  $2.00.  The  Fund is
obligated  to  pay  this  dividend  to the  Preferred  Shareholders  before  any
dividends  are paid to the  holders  of common  shares.  Thereafter,  any return
earned in  excess  of this  dividend  rate  would  work to  benefit  the  Common
Shareholders.

Q:  How would Preferred Shares benefit Common Shareholders?

      Through June 30, 1998, the Convertible  Securities Fund has earned a 10.3%
average annual return.  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 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 


                                       7
<PAGE>

outstanding.  Common Shareholders thus avoid having to pay taxes on that portion
of taxable  income  that  previously  would have been  distributed  to them.  By
deferring these taxable  distributions and taxes associated  therewith,  the net
asset value of the common shares are likely to grow at a faster rate.

Q:  Why did the Fund consider Preferred Shares?

      Long-term  interest rates were at relatively low levels. The dividend rate
that  the  Fund is  required  to pay on the  Preferred  Shares  was  related  to
long-term rates. In this environment, we had a great opportunity to create value
by  earning a return in excess of the  Preferred's  dividend  rate over the long
term. Therefore,  we believe this represented an opportunistic time for the Fund
to take advantage of these low rates.

Q:  Will Gabelli Funds, Inc. be paid a management fee on the Preferred Capital?

      With the completion of the preferred  offering,  the Adviser has agreed to
waive the management fee on the incremental  assets if the net asset value total
return on the Fund does not  exceed the stated  dividend  rate on the  Preferred
Shares.

Q:  What were the offering costs involved with the Preferred Shares?

      Consistent with our conservative  approach,  the Fund issued the Preferred
Shares in a cost  efficient  manner at less than  $0.18 per share.  This  modest
investment  provided the underpinnings for successful  returns in the future and
incrementally  boosted  the  Fund's  twelve  month  returns  to  13.6%  with the
preferred offering versus 10.7% had the Preferred Shares not been issued. Stated
differently,  shareholders have received approximately 3% in incremental returns
since the Preferred Shares were issued.

Let's Talk Converts

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

      AirTouch Communications Inc. (6.00%, Cv. Pfd., Cl. B; 4.25%, Cv. Pfd., Cl.
C)  is  the  world's   largest   multinational   company   focused  on  wireless
communications.  The company offers a full range of wireless services: cellular,
paging and personal  communications services (PCS). In the future, AirTouch will
offer global satellite  communications.  AirTouch has over 11 million  worldwide
wireless subscribers.  1997 earnings, before acquisitions,  almost doubled those
in 1996.  Cash flow should grow by about 25% in 1998.  The company has completed
the acquisition of the U.S. cellular and PCS interests of US West Media Group in
a deal valued at almost $6 billion.

      Chock Full o'Nuts Corp. (Sub. Deb. Cv., 8.00%,  9/15/06;  7.00%,  4/01/12)
roasts,  packages and  distributes  regular,  instant and specialty  coffees and
teas. The company also has a growing  institutional  distribution  business that
supplies  coffee and food products to  restaurants  and  businesses.  Chock Full
o'Nuts is  developing  a chain of retail  drive-through  coffee  outlets  called
Quikava.  Both the 8%  convertible  bonds,  due in 2006,  and the 7% convertible
bonds,  due in 2012,  offer  investors an attractive way to participate in Chock
Full o'Nuts' future.

      Citizens Utilities Co. (5.00% Cv. Pfd.) is a  telecommunications  services
and utilities company.  On the  telecommunications  side, Citizens is the eighth
largest non-Bell telephone service provider in the United States. On the utility
side, the company provides natural gas transmission and distribution services to
446,000 residential,  commercial and industrial customers in Arizona,  Colorado,
Hawaii and Louisiana.  Management has announced a corporate  restructuring  plan
which would split the company into two stand-alone,  publicly-traded  companies:
the  telecommunications  businesses and the public  services/utility  unit. This
restructuring  will be  facilitated by the $215 million in cash the company will
receive  from its 16% stake in  Centennial  Cellular  Corp.  (CYCL -  $37.3125 -
Nasdaq) when  Centennial's  planned sale to Welsh,  Carson,  Anderson & Stowe is
concluded.


                                       8
<PAGE>

      Fieldcrest  Cannon Inc. (Sub. Deb. Cv.,  6.00%,  03/15/12) is a well-known
manufacturer of household  textile  products,  including  sheets,  pillow cases,
towels, bedspreads and blankets. Management has undertaken several restructuring
steps which are  anticipated  to result in  significant  increases  in operating
margins and net income.  We believe stable cotton prices,  higher mill activity,
lower  interest  expenses and an  improving  economic  environment  will sustain
Fieldcrest's  earnings  recovery.  Pillowtex  (PTX -  $40.125  - NYSE)  acquired
Fieldcrest  Cannon for cash and stock valued at roughly $400 million.  Pillowtex
makes bedding products under a number of private label and brand names including
Ralph Lauren and Disney, so the amalgamation  expands  Pillowtex's  product line
from the bedroom to the bathroom.

      Sequa Corp.  ($5.00 Cv. Pfd.) is an  aerospace,  chemical,  machinery  and
automotive  product company.  Its diversified  businesses range from overhauling
jet engines to manufacturing  specialty chemicals.  The Chromalloy division, the
company's crown jewel which generates over $800 million in revenues, is a leader
in the repair,  replacement and overhaul of gas turbine engines.  Sequa recently
signed a letter of intent to buy Reynold's Metals' can-machinery business. Sequa
also has  acquired an 8.6% stake in  Material  Sciences  Corp.  (MSC - $11.625 -
NYSE), a provider of specialty coatings for steel and plastics.

      Sprint Corp.  ($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. The
company has a promising  national  personal  communications  services  (PCS) and
wireless  joint  venture with three major cable  operators:  Tele-Communications
Inc.,  Comcast  and Cox  Communications.  FON faces risks from  prospective  new
entrants in its long  distance  business  which may be offset by the PCS venture
and its own pursuit of the $100 billion local telephone market.

      Thomas Nelson Inc. (Sub. Deb. Cv., 5.75%,  11/30/99)  publishes Bibles and
inspirational books and produces specialty gift items, all designed to appeal to
the growing  Christian and  family-oriented  lifestyle  segments of our nation's
population.

Shareholder Meeting - May 11, 1998 - Final Results

      The  Annual  Meeting  of  Shareholders  was  held on May  11,  1998 at the
Greenwich  Library  in  Greenwich,  Connecticut.  At that  meeting,  Common  and
Preferred  Shareholders elected Mario J. Gabelli and Karl Otto Pohl as Directors
of the  Convertible  Securities  Fund. A total of 6,766,085  votes and 6,737,191
votes were cast in favor of each Director and 67,546 votes and 96,440 votes were
withheld for each Director,  respectively.  Preferred Shareholders,  voting as a
separate class, elected Felix J. Christiana and Anthony J. Colavita as Directors
of the Preferred Shares of the Convertible Securities Fund. A total of 1,132,095
votes and  1,133,495  votes were cast in favor of each  Director and 8,129 votes
and 6,729 votes were withheld for each Director, respectively.

      E. Val Cerutti, Dugald A. Fletcher, Anthony R. Pustorino,  Anthonie C. van
Ekris and Salvatore J. Zizza 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, 1998. 6,746,540 votes were cast
in favor of the  approval of this  proposal,  35,485 votes were cast against the
proposal and 51,605 votes abstained.

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

Dividends

      The Fund  recently  distributed  a  dividend  of $0.20 per share to Common
Shareholders  on June 26, 1998.  For the twelve months ended June 30, 1998,  the
Fund  distributed  a total  of  $1.12  per  share to  Common  Shareholders.  Our
Preferred Shareholders were paid a dividend of $0.50 per share on June 26, 1998.
For the year ended June 30, 1998,  the Preferred  Shareholders  received a total
distribution  of $2.2278 per share.  This  includes an initial  


                                       9
<PAGE>

distribution  on September 26, 1997, of $0.7278 per share which  represented the
accrual period from May 16, 1997 through  September 26, 1997. The next quarterly
dividend  of $0.50  per  share for the  Preferred  Shareholders  will be paid on
September 28, 1998.

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 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  Funds,  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].

In Conclusion

      In the second quarter of 1998, convertible  securities  demonstrated their
resilience in the face of a brief, but sharp,  equity down draft and enjoyed the
tailwind  from a rising bond market.  Looking  ahead,  with stocks  likely to be
restrained as investors ponder the impact of Asia on corporate earnings and long
bond  yields  near  historical  lows,  we  believe  convertible  securities  are
particularly attractive.

Sincerely,

                                         /s/ Mario J. Gabelli
                                         -------------------------------------
                                         Mario J. Gabelli
                                         President and
                                         Chief Investment Officer
                                        
August 1, 1998      

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

                          Top Ten Convertible Holdings
                                 June 30, 1998

Sprint ($1.50 Cv. Pfd., Ser. 1; $1.50 Cv. Pfd., Ser. 2; 8.25%, Cv. Pfd.)
AirTouch Communications (6.00%, Cv. Pfd., Cl. B; 4.25%, Cv. Pfd., Cl. C)
Fieldcrest Cannon Inc. (Sub. Deb. Cv., 6.00%, 03/15/12)
Citizens Utilities (5.00% Cv. Pfd.)
Sequa Corporation ($5.00 Cv. Pfd.)
Thomas Nelson Inc. (Sub. Deb. Cv., 5.75%, 11/30/99)
WHX Corp. (Cv. Pfd. Ser. A, Cv. Pfd. Ser. B)
Atlantic Richfield ($2.80 Cv. Pfd.)
Chock Full o'Nuts Corp.  (Sub. Deb. Cv., 8.00%, 9/15/06; 7.00%, 04/01/12)
Sealed Air Corp. ($2.00 Cv. Pfd. Ser. A)

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

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.


                                       10
<PAGE>

The Gabelli Convertible Securities Fund, Inc.
Portfolio of Investments -- June 30, 1998 (Unaudited)
================================================================================

Principal                                                            Market
 Amount                                               Cost           Value
- ---------                                             ----           ------
             CONVERTIBLE CORPORATE BONDS -- 17.24%

             Automotive: Parts and Accessories -- 0.25%
$  500,000   Exide Corp. Sub. Deb. Cv
               2.90%, 12/15/05 (a). ............... $   331,605     $   311,250
                                                    -----------     -----------

             Aviation: Parts and Services -- 0.80%
   966,000   Kaman Corp. Sub. Deb. Cv.
               6.00%, 03/15/12.....................     888,901         975,660
                                                    -----------     -----------

             Building and Construction -- 0.02%
    10,000   Holderbank Financiere Glarus AG
               Sub. Deb. Cv.
               4.50%, 08/11/08.....................      11,978          23,175
                                                    -----------     -----------
             Business Services -- 0.85%
   900,000   BBN Corp. Sub. Deb. Cv.
               6.00%, 04/01/12 ....................     879,268         832,500
   850,000   Builders Transport Inc.
               Sub. Deb. Cv.
               6.50%, 05/01/11  ...................     359,891         212,500
                                                    -----------     -----------
                                                      1,239,159       1,045,000
                                                    -----------     -----------
             Cable -- 0.66%
             Rogers Communications Inc.
               Sub. Deb. Cv.
   200,000     2.00%, 11/26/05.....................     121,400         125,000
 1,000,000     7.50%, 09/01/99.....................     688,088         678,321
                                                    -----------     -----------
                                                        809,488         803,321
                                                    -----------     -----------
             Consumer Products -- 2.97%
 3,500,000   Fieldcrest Cannon Inc.
               Sub. Deb. Cv.
               6.00%, 03/15/12.....................   2,506,185       3,005,625
   750,000   Standard Commercial Corp.
               Sub. Deb. Cv.
               7.25%, 03/31/07 ....................     604,923         629,063
                                                    -----------     -----------
                                                      3,111,108       3,634,688
                                                    -----------     -----------
             Consumer Services -- 0.01%
    10,000   Odgen Corp. Sub. Deb. Cv.
               6.00%, 06/01/02  ...................      10,282          10,050
                                                    -----------     -----------
             Electronic Equipment -- 0.33%
   390,000   Trans-Lux Corp.
               Sub. Deb. Cv.
               7.50%, 12/01/06 ....................     390,000         406,088
                                                    -----------     -----------
             Energy -- 1.80%
 1,100,000   Moran Energy Inc.
               Sub. Deb. Cv.
               8.75%, 01/15/08.....................     757,843       1,043,243
   580,000   Pennzoil Co. Sub. Deb. Cv.
               6.50%, 01/15/03.....................     580,000       1,162,175
                                                    -----------     -----------
                                                      1,337,843       2,205,418
                                                    -----------     -----------

             Entertainment -- 0.74% 
   200,000   Kushner-Locke Co.
               Sub. Deb. Cv.
               8.00%, 12/15/00 (b) ................     156,155         120,000
   800,000   Savoy Pictures
               Entertainment Inc.
               Sub. Deb. Cv.
               7.00%, 07/01/03 ....................     736,372         781,000
                                                    -----------     -----------
                                                        892,527         901,000
                                                    -----------     -----------
             Equipment and Supplies -- 1.92%
 1,285,000   Intermagnetics General Corp.
               Sub. Deb. Cv.
               5.75%, 09/15/03 (a) ................   1,255,557       1,150,075
 1,136,000   Kollmorgen Corp.
               Sub. Deb. Cv.
               8.75%, 05/01/09.....................     881,663       1,170,080
    20,000   Robbins & Myers Inc.
               Sub. Deb. Cv.
               6.50%, 09/01/03.....................      26,291          25,400
                                                    -----------     -----------
                                                      2,163,511       2,345,555
                                                    -----------     -----------
             Food and Beverage -- 1.66%
             Boston Chicken Inc.
               Sub. Deb. Cv.
   310,000      4.50%, 02/01/04 ...................     208,209          50,763
    50,000      7.75%, 05/01/04....................      32,949           8,313
   100,000   Chiquita Brands
               International Inc. Cv.
               7.00%, 3/28/01 .....................      95,752          95,000
             Chock Full o' Nuts Corp.
               Sub. Deb. Cv.
 1,000,000     7.00%, 04/01/12.....................     764,646         985,000
   883,000     8.00%, 09/15/06.....................     873,866         894,038
                                                    -----------     -----------
                                                      1,975,422       2,033,114
                                                    -----------     -----------
             Health Care -- 0.54%
   750,000   Ivax Corp. Deb. Cv.
               6.50%, 11/15/01.....................     655,297         660,938
                                                    -----------     -----------
             Hotels and Gaming -- 0.60%
   700,000   Hilton Hotels Corp.
               Sub. Deb. Cv.
               5.00%, 05/15/06.....................     700,000         738,500
                                                    -----------     -----------

                See accompanying notes to financial statements.


                                       11
<PAGE>

The Gabelli Convertible Securities Fund, Inc.
Portfolio of Investments (Continued) -- June 30, 1998 (Unaudited)
================================================================================

   Principal                                                          Market
    Amount                                             Cost           Value
   ---------                                           ----           ------
             Metals and Mining -- 0.27%
$  450,000   Coeur d'Alene Mines Corp.
               Sub. Deb. Cv.
               6.00%, 06/10/02 .................... $   421,631     $   335,250
                                                    -----------     -----------
             Paper and Forest Products -- 0.19%
   200,000   Riverwood International Corp.
               Sub. Deb. Cv.
               6.75%, 09/15/03.....................     199,725         230,890
                                                    -----------     -----------
             Publishing -- 2.79%
   700,000   News America Holdings Inc.
               Sub. Deb. Cv.
               Zero Cpn., 03/31/02 ................     526,394         971,688
 2,350,000   Thomas Nelson Inc.
               Sub. Deb. Cv.
               5.75%, 11/30/99 (a) ................   2,347,900       2,341,188
    50,000(c)United News & Media plc
               Sub. Deb. Cv.
               6.125%, 12/03/03 ...................      86,975         100,527
                                                    -----------     -----------
                                                      2,961,269       3,413,403
                                                    -----------     -----------
             Real Estate and Development -- 0.08%
   125,000   Rockefeller Center Properties Inc.
               Sub. Deb. Cv.
               Zero Cpn., 12/31/00 ................      92,420          98,125
                                                    -----------     -----------
             Retail -- 0.24%
    50,000   Costco Companies Inc.
               Sub. Deb. Cv.
               Zero Cpn., 08/19/17 ................      34,563          38,313
   146,000   Farah U.S.A. Inc.
               Sub. Deb. Cv.
               8.50%, 02/01/04.....................     133,953         116,800
   160,000   JumboSports Inc.
               Sub. Deb. Cv.
               4.25%, 11/01/00 ....................     132,275          49,400
   100,000   Nine West Group Inc.
               Sub. Deb. Cv.
               5.50%, 07/15/03 (a) ................      82,223          83,250
                                                    -----------     -----------
                                                        383,014         287,763
                                                    -----------     -----------
             Telecommunications -- 0.10%
             Amnex Inc. Sub. Deb. Cv.
    10,000     8.50%, 09/25/02 ....................       7,218           7,900
    50,000     8.50%, 09/25/02 (a) ................      50,000          39,500
    50,000   Telefonica Europe BV
               Sub. Deb. Cv.
               2.00%, 07/15/02 (a) ................      50,000          75,875
                                                    -----------     -----------
                                                        107,218         123,275
                                                    -----------     -----------
             Transportation -- 0.42% 
   460,000   Greyhound Lines Inc.
               Sub. Deb. Cv.
               8.50%, 03/31/07.....................     287,606         490,475
   150,000   WorldCorp Inc.
               Sub. Deb. Cv.
               7.00%, 05/15/04.....................     150,000          26,625
                                                    -----------     -----------
                                                        437,606         517,100
                                                    -----------     -----------
             TOTAL CONVERTIBLE
             CORPORATE BONDS  .....................  19,120,004      21,099,563
                                                    -----------     -----------

             CONVERTIBLE PREFERRED STOCKS -- 21.36%
    Shares
    ------   Aviation: Parts and Services -- 0.38%
    10,000   Coltec Capital Trust
               5.25% Cv. Pfd. (a) .................     500,000         465,000
                                                    -----------     -----------
             Broadcasting -- 0.44%
     9,000   Granite Broadcasting Corp.
               $1.938 Cv. Pfd......................     508,995         542,250
                                                    -----------     -----------
             Cable -- 1.50%
     4,000   Cablevision Systems Corp.
               8.50% Cv. Pfd. Ser. 1 ..............      97,463         255,750
    17,500   MediaOne Group
               4.50% Cv. Pfd. Ser. D ..............     866,560       1,573,906
                                                    -----------     -----------
                                                        964,023       1,829,656
                                                    -----------     -----------
             Consumer Services -- 0.16%
     4,000   Cendant Corp.
               1.30% Cv. Pfd.......................     130,888         115,750
     4,000   Loewen Group Inc.
               6.00% Cv. Pfd. Ser C. ..............      81,407          79,563
                                                    -----------     -----------
                                                        212,295         195,313
                                                    -----------     -----------
             Diversified Industrial -- 0.24%
     1,300   GATX Corp.
               $2.50 Cv. Pfd.......................     116,515         291,200
                                                    -----------     -----------
             Energy -- 1.87%
     6,000   Atlantic Richfield Co.
               $2.80 Cv. Pfd.......................   1,600,963       2,232,000
     1,500   McDermott International Inc.
               $2.20 Cv. Pfd. A.. .................      43,738          53,250
                                                    -----------     -----------
                                                      1,644,701       2,285,250
                                                    -----------     -----------
             Entertainment -- 0.11%
     2,500   Metromedia International
               Group Inc.
               7.25% Cv. Pfd.......................     122,650         128,750
                                                    -----------     -----------

                See accompanying notes to financial statements.


                                       12
<PAGE>

The Gabelli Convertible Securities Fund, Inc.
Portfolio of Investments (Continued) -- June 30, 1998 (Unaudited)
================================================================================

                                                                      Market
    Shares                                             Cost           Value
   ---------                                           ----           ------

             Equipment and Supplies -- 1.96%
    24,000   Sequa Corp.
               $5.00 Cv. Pfd..... ................. $ 1,832,242     $ 2,400,000
                                                    -----------     -----------

             Financial Services -- 1.04%
    10,500   American Bankers Insurance
               $3.125 Cv. Pfd. Ser. B .............   1,356,081       1,274,438
                                                    -----------     -----------
             Iron/Steel -- 1.87% WHX Corp.
    29,000     Cv. Pfd. Ser. A... .................   1,459,538       1,406,500
    20,000     Cv. Pfd. Ser. B... .................     909,725         880,000
                                                    -----------     -----------
                                                      2,369,263       2,286,500
                                                    -----------     -----------
             Paper and Forest Products -- 1.30%
    38,000   Sealed Air Corp.
               $2.00 Cv. Pfd. Ser. A ..............   1,731,767       1,596,000
                                                    -----------     -----------
             Publishing -- 0.17%
             Golden Books Family
               Entertainment Inc.
     1,000     8.75% Cv. Pfd.......................      24,000          22,000
     6,000     8.75% Cv. Pfd. (a) .................     300,000         132,000
     2,000   Reader's Digest
               $1.034 Cv. Pfd......................      53,475          51,500
                                                    -----------     -----------
                                                        377,475         205,500
                                                    -----------     -----------
             Telecommunications -- 7.85%
    63,500   Citizens Utilities Co.
               5.00% Cv. Pfd.......................   3,073,949       3,000,375
     1,000   Philippine Long Distance
               $3.50 Cv. Pfd. Ser. III ............      51,269          46,000
             Sprint Corp.
     3,000     $1.50 Cv. Pfd. Ser. 1 ..............     301,100         660,000
     2,200     $1.50 Cv. Pfd. Ser. 2 ..............     187,510         502,700
    82,500     8.25% Cv. Pfd.......................   3,101,119       4,769,531
     4,000   TCI Communications Inc.
               $2.125 Cv. Pfd. Ser. A .............     177,465         323,000
     1,500   TCI Pacific
               Communications Inc.
               5.00% Cv. Pfd.......................     134,838         316,430
                                                    -----------     -----------
                                                      7,027,250       9,618,036
                                                    -----------     -----------
             Wireless Communications -- 2.47%
             AirTouch Communications Inc.
    12,000     4.25% Cv. Pfd. Cl. C ...............     560,930         990,000
    42,000     6.00% Cv. Pfd. Cl. B ...............   1,202,662       2,026,500
                                                    -----------     -----------
                                                      1,763,592       3,016,500
                                                    -----------     -----------
             TOTAL CONVERTIBLE
             PREFERRED STOCKS .....................  20,526,849      26,134,393
                                                    -----------     -----------
             COMMON STOCKS -- 18.56%

             Agriculture -- 3.09%
    40,000   Dekalb Genetics Corp. ................   3,771,460       3,785,000
                                                    -----------     ----------- 
     
             Aviation: Parts and Services -- 0.28%
    18,000   Kaman Corp............................     181,321         342,563
                                                    -----------     -----------
             Business Services -- 2.56%
   100,000   Transaction Systems
               Architects Inc. ....................   3,086,250       3,137,500
                                                    -----------     -----------
             Diversified Industrial -- 1.08%
    30,000   GATX Corp.............................     630,218       1,316,250
                                                    -----------     -----------
             Energy -- 1.19%
     2,000   Central Hudson Gas
               and Electric Corp. .................      86,913          91,750
    25,000   Orange & Rockland
               Utilities...........................   1,338,815       1,342,188
     2,000   Santa Fe Energy
               Resources Inc.+.....................      14,959          21,500
                                                    -----------     -----------
                                                      1,440,687       1,455,438
                                                    -----------     -----------
             Entertainment -- 1.71%
    25,000   BET Holdings Inc.+....................   1,488,023       1,573,438
     3,000   Time Warner Inc.......................     181,458         256,313
    10,000   USA Networks Inc......................     220,317         251,250
                                                    -----------     -----------
                                                      1,889,798       2,081,001
                                                    -----------     -----------
             Equipment and Supplies -- 0.26%
    50,000   Fedders Corp. Cl. A. .................     310,916         318,750
                                                    -----------     -----------
             Financial Services -- 2.79%
    30,000   Allied Group Inc......................   1,398,109       1,404,375
    27,000   American Bankers
               Insurance Group.....................   1,761,713       1,623,375
    12,000   Argonaut Group Inc. ..................     418,245         379,500
       269   First Union Corp. ....................      14,619          15,678
                                                    -----------     -----------
                                                      3,592,686       3,422,928
                                                    -----------     -----------
             Health Care -- 0.83%
    15,000   Genentech Inc.+..... .................     719,239       1,018,125
                                                    -----------     -----------
             Retail -- 4.77%
    45,000   Food Lion Inc. Cl. A .................     361,381         478,125
    69,400   Giant Food Inc. Cl. A ................   2,976,079       2,988,531
    30,000   Mercantile Stores Co. ................   2,365,023       2,368,125
                                                    -----------     -----------
                                                      5,702,483       5,834,781
                                                    -----------     -----------
             TOTAL COMMON
             STOCKS ...............................  21,325,058      22,712,336
                                                    -----------     -----------

                See accompanying notes to financial statements.


                                       13
<PAGE>

The Gabelli Convertible Securities Fund, Inc.
Portfolio of Investments (Continued) -- June 30, 1998 (Unaudited)
================================================================================

   Principal                                                          Market
    Amount                                             Cost           Value
   ---------                                           ----           ------

             CORPORATE BONDS -- 0.08%
             Entertainment -- 0.08%
$  100,000   Viacom Inc.
               8.00%, 07/07/06.....................$     99,531     $   103,500
                                                   ------------     -----------

             U.S. GOVERNMENT OBLIGATIONS -- 44.77%
55,060,000   U.S. Treasury Bills,
               4.81% to 5.12%, ++
               Due 08/06/98
               to 09/17/98  .......................  54,776,043      54,776,043
                                                   ------------     -----------

TOTAL INVESTMENTS -- 102.01%  .....................$115,847,485    $124,825,835
                                                   ============    
OTHER ASSETS, LIABILITIES AND
  LIQUIDATION VALUE OF CUMULATIVE
  PREFERRED STOCK-- (26.52%) ......................                 (32,454,571)
                                                                   ------------
NET ASSETS -- COMMON STOCK -- 75.48%
  (7,922,145 common
  shares outstanding)..............................                  92,371,264
                                                                   ------------
NET ASSETS -- CUMULATIVE
  PREFERRED STOCK -- 24.52%
  (1,200,000 preferred
  shares outstanding)..............................                  30,000,000
                                                                   ------------
TOTAL NET ASSETS -- 100%............................                $122,371,264
                                                                   ============

NET ASSET VALUE PER COMMON SHARE
  ($92,371,264 / 7,922,145
  shares outstanding)..............................                      $11.66
                                                                         ======
- -----------
For Federal tax purposes:

Aggregate Cost ..................                                  $115,847,485
                                                                   ============
Gross unrealized appreciation....                                  $ 10,624,795
Gross unrealized  depreciation...                                    (1,646,445)
                                                                   ------------
Net unrealized appreciation......                                  $  8,978,350
                                                                   ============
- ----------------
(a)   Security exempt from registration under Rule 144A of the Securities Act of
      1933, as amended.  These  securities may be resold in transactions  exempt
      from registration, normally to qualified institutional buyers. At June 30,
      1998, the market value of rule 144A  securities  amounted to $4,598,138 or
      3.76% of net assets.
(b)   Security  fair  valued  as  determined  by the  Board  of  Directors.  (c)
      Principal amount denoted in British Pounds.
+     Non-income producing security.
++    Yields represent the effective yield to maturity on the date of purchase.

                See accompanying notes to financial statements.


                                       14
<PAGE>

                  The Gabelli Convertible Securities Fund, Inc.

Statement of Assets and Liabilities
June 30, 1998 (Unaudited)
================================================================================
Assets:
  Investments, at value
    (Cost $115,847,485) ..................................        $ 124,825,835
  Foreign currency, at value
    (Cost $112,054) ......................................              113,214
  Receivable for investments sold ........................              302,879
  Dividends and interest receivable ......................              478,627
                                                                  -------------
    Total Assets .........................................          125,720,555
                                                                  -------------
Liabilities:
  Payable for investments purchased ......................            2,337,021
  Payable for dividends ..................................               26,087
  Payable for investment advisory fees ...................               76,716
  Payable to custodian ...................................              868,766
  Other accrued expenses .................................               40,701
                                                                  -------------
    Total Liabilities ....................................            3,349,291
                                                                  -------------
    Net Assets ...........................................        $ 122,371,264
                                                                  =============
  Net Asset Value per Common Share
  ($92,371,264/7,922,145 shares issued
  and outstanding; 100,000,000 shares
  authorized of $0.001 par value) ........................        $       11.66
                                                                  =============
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 ............................                7,922
  Additional paid-in capital .............................           82,132,838
  Accumulated distributions in excess of
    net investment income ................................             (152,426)
  Accumulated undistributed net realized
    gain on investments ..................................            1,404,555
  Net unrealized appreciation on
    investments and foreign currency
    transactions .........................................            8,978,375
                                                                  -------------
    Total Net Assets .....................................        $ 122,371,264
                                                                  =============

Statement of Operations
For the Six Months Ended June 30, 1998 (Unaudited)
================================================================================
Income:
  Dividends ................................................        $   471,519
  Interest .................................................          2,631,918
                                                                    -----------
    Total Investment Income ................................          3,103,437
                                                                    -----------
Expenses:
  Investment advisory fees .................................            469,298
  Shareholder services fees ................................             50,966
  Shareholder report expenses ..............................             49,988
  Directors' fees ..........................................             34,769
  Miscellaneous expenses ...................................             55,840
                                                                    -----------
    Total Expenses .........................................            660,861
                                                                    -----------
    Net Investment Income ..................................          2,442,576
                                                                    -----------
Net Realized and Unrealized
  Gain on Investments:
  Net realized gain on investments and
    foreign currency transactions ..........................          3,438,096
  Net change in unrealized depreciation on
    investments, futures contracts and
    foreign currency transactions ..........................           (270,909)
                                                                    -----------
  Net realized and unrealized gain
    on investments .........................................          3,167,187
                                                                    -----------
  Net increase in net assets resulting
    from operations ........................................        $ 5,609,763
                                                                    ===========

Statement of Changes in Net Assets
================================================================================
                                                   Six Months Ended  Year Ended
                                                     June 30, 1998  December 31,
                                                      (Unaudited)       1997
                                                   ---------------  -----------
Operations:
  Net investment income ..........................  $  2,442,576   $  3,922,377
  Net realized gain on investments and foreign
    currency transactions ........................     3,438,096      5,481,192
  Net realized loss on futures ...................          --          (91,050)
  Net change in unrealized appreciation/
    (depreciation) of investments and foreign
    currency transactions ........................      (270,909)     4,526,049
                                                    ------------   ------------
    Net increase in net assets resulting
      from operations ............................     5,609,763     13,838,568
                                                    ------------   ------------
Distributions to preferred shareholders from:
  Net investment income ..........................      (668,249)      (623,599)
  Net realized gains .............................      (531,751)      (883,043)
                                                    ------------   ------------
    Total distributions ..........................    (1,200,000)    (1,506,642)
                                                    ------------   ------------
Distributions to common shareholders from:
  Net investment income ..........................    (1,774,327)    (3,206,103)
  Net realized gains .............................    (1,411,901)    (4,507,099)
  Distributions in excess of net realized gains ..          --          (29,138)
                                                    ------------   ------------
    Total distributions ..........................    (3,186,228)    (7,742,340)
                                                    ------------   ------------
Capital share transactions - net: ................    (1,234,281)      (459,867)
                                                    ------------   ------------
Net proceeds from the issuance of preferred stock:          --       28,593,000
                                                    ------------   ------------
  Net increase / (decrease) in net assets ........       (10,746)    32,722,719
Net Assets
  Beginning of Period ............................   122,382,010     89,659,291
                                                    ------------   ------------
  End of Period ..................................  $122,371,264   $122,382,010
                                                    ============   ============

                See accompanying notes to financial statements.


                                       15
<PAGE>

                  The Gabelli Convertible Securities Fund, Inc.

                    Notes to Financial Statements (Unaudited)

1. Description.  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 as
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.  Debt  instruments  having a greater  maturity are
valued at the highest bid priced  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 might


                                       16
<PAGE>

                  The Gabelli Convertible Securities Fund, Inc.

              Notes to Financial Statements (Continued) (Unaudited)

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, 1998,  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, 1998, 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.  At  June  30,  1998,  there  were no  short
positions.

    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.

    For the year ended December 31, 1997, the following  reclassifications  were
made to increase distributions in excess of net investment income for $3,280 and
decrease accumulated undistributed net realized gain on investments for $3,280.

    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.


                                       17
<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  998,000,000  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,
1998, the 1,200,000 shares of 8% Cumulative  Preferred Stock outstanding accrued
dividends in the amount of $26,087. 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, 1998, the Fund repurchased 123,100 shares at a cost of $1,287,318
and at an average discount of 11.25%.

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 to reduce 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 6 months
ended June 30,  1998,  the Fund has not yet achieved a total return in excess of
the stated dividend rate and the management fee reduction was $147,161.

5.  Portfolio  Securities.  Purchases and sales of securities for the six months
ended June 30, 1998, other than short-term  securities,  aggregated  $49,355,838
and $45,977,055, respectively.

6. Transactions with Affiliates.  During the six months ended June 30, 1998, the
Fund paid brokerage  commissions  of $22,851 to Gabelli & Company,  Inc. and its
affiliates.


                                       18
<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              For the Year Ended December 31,
                                            June 30, 1998   --------------------------------------------------
                                            (Unaudited)     1997       1996        1995       1994        1993
                                            -----------     ----       ----        ----       ----        ----
<S>                                           <C>         <C>         <C>        <C>        <C>         <C>     
Operating Performance:
  Net asset value, beginning of year ......   $  11.48    $  11.08    $ 11.01    $ 10.60    $  11.52    $  11.45
                                              --------    --------    -------    -------    --------    --------
  Net investment income ...................       0.30        0.49       0.49       0.53        0.69        0.76
  Net realized and unrealized gain
    (loss) on securities ..................       0.40        1.23       0.31       1.03       (0.71)       0.74
                                              --------    --------    -------    -------    --------    --------
  Total from investment operations ........       0.70        1.72       0.80       1.56       (0.02)       1.50
                                              --------    --------    -------    -------    --------    --------
Increase in net assets from
  capital share transactions ..............       0.03        0.01
                                              --------    --------
Offering expenses charged to
  additional paid-in-capital ..............                  (0.18)
                                                          --------
Distributions:
  Preferred Shares
  Distributions from net investment income       (0.08)      (0.08)        --        --           --          --
  Distributions from net realized gain on
    investments ...........................      (0.07)      (0.11)        --        --           --          --
  Common Shares
  Distributions from net investment income       (0.22)      (0.40)     (0.49)     (0.53)      (0.69)       0.76)
  Distributions from net realized gain on
    investments ...........................      (0.18)      (0.56)     (0.24)     (0.56)      (0.21)      (0.67)
  Distributions in excess of net investment
    income ................................         --          --         --      (0.02)         --          --
  Distributions in excess of net realized
    gains .................................         --          --         --      (0.01)         --          --
  Distributions from paid-in-capital ......         --          --         --      (0.03)         --          --
                                              --------    --------    -------    -------    --------    --------
  Total distributions .....................      (0.55)      (1.15)     (0.73)     (1.15)      (0.90)      (1.43)
                                              --------    --------    -------    -------    --------    --------
  Net asset value end of year .............   $  11.66    $  11.48    $ 11.08    $ 11.01    $  10.60    $  11.52
                                              ========    ========    =======    =======    ========    ========
  Market value, end of period .............   $  10.94    $  10.31    $  9.25    $  0.75          --          --
                                              ========    ========    =======    =======    ========    ========
  Total Net Asset Value Return +(a) .......        5.3%       13.5%       8.4%      15.0%       (0.2)%      13.1%
  Total Investment Return +(b) ............        9.9%       22.2%      (7.3)%     12.3%         --          --
Ratios to average net assets and
  supplemental data:

  Net Assets, end of period (in 000's) ....   $122,371    $122,382    $89,659    $89,137    $112,090    $108,674
  Net Assets attributable to common shares,
    end of period (in 000's) ..............   $ 92,371    $ 92,382
  Ratio of net investment income to
    average net assets ....................       5.22%*      4.23%      4.33%      4.60%       4.77%       4.58%
  Ratio of operating expenses to average
    net assets attributable to common
    stock (c) (d) .........................       1.41%*      1.68%      1.45%      1.56%       1.31%       1.38%
  Portfolio Turnover Rate .................         78%        243%       114%       140%         67%         45%
  Preferred Stock:
  Total shares outstanding (in 000's) .....      1,200       1,200         --         --          --          --
  Asset coverage per share ................        407%        408%        --         --          --          --
  Liquidation preference per share ........   $  25.00    $  25.00         --         --          --          --
  Average market value per share (e) ......   $  26.75    $  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.
*     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%.
(d)   For the six months ended June 30, 1998, the ratio of operating expenses to
      average net assets  including  assets  attributable to preferred stock was
      1.07% (annualized).
(e)   Based on weekly prices.

                 See accompanying notes to financial statements.


                                       19

<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.

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 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 will use these funds to purchase
shares in the open market on or about the 15th of each month.  State Street 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.  The Fund's Adviser,
Gabelli Funds,  Inc.,  has arranged that these  purchases will be executed at no
commission  through  December 31, 1998. 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 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.


                                       20
<PAGE>

                             DIRECTORS AND OFFICERS
                  THE GABELLI CONVERTIBLE SECURITIES FUND, INC.
                    One Corporate Center, Rye, NY 10580-1434

Directors

Mario J. Gabelli, CFA
   Chairman & Chief Investment Officer
   Gabelli Funds, Inc.

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 Adviser

Gabelli Funds, Inc.
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:       7,922,145         1,200,000
                                 
The Net Asset Value  appears in the  Publicly  Traded  Funds  column,  under the
heading "Convertible  Securities Funds," in Saturday'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

                              -------------------
                                First Class Mail
                                  U.S. Postage
                                      PAID
                                    Rye, NY
                                 Permit No. 109
                              -------------------

                               Semi-Annual Report
                                 June 30, 1998


                                                                           06/98



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