ALLMERICA SECURITIES TRUST
N-30D, 1996-08-30
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<PAGE>
 
                                                              SEMI-ANNUAL REPORT


                                                              June 30, 1996

                                                              Allmerica
                                                              Securities
                                                              Trust




                                  =  A S T  =
<PAGE>
 
Trust Information
- -------------------------------------

Board of Trustees
John F. O'Brien, Chairman
Russell E. Fuller
Gordon Holmes
John Kavanaugh
Bruce E. Langton
Attiat F. Ott
Paul D. Paganucci
Richard M. Reilly
Ranne P. Warner
Thomas S. Zocco

Officers
Richard M. Reilly, President
Thomas P. Cunningham, Treasurer

Investment Adviser
Allmerica Asset Management, Inc.
440 Lincoln Street
Worcester, MA 01653

Registrar and Transfer, Dividend Disbursing and Reinvestment Agent
The Bank of New York
P.O. Box 11258, Church Street Station
New York, NY 10286

Custodian
Bankers Trust Company
16 Wall Street
New York, NY 10005

Administrator
First Data Investor Services Group
4400 Computer Drive
P.O. Box 5108
Westboro, MA 01581

Independent Accountant
Price Waterhouse LLP
160 Federal Street
Boston, MA 02110

Legal Counsel
Ropes & Gray
One International Place
Boston, MA 02110

Shareholder inquiries
may be directed to:
The Bank of New York
Shareholder Relations
Department - IIE
P.O. Box 11258
Church Street Station
New York, NY 10286
1-800-432-8224

- -------------------------------------
CONTENTS
- -------------------------------------

<TABLE>
<CAPTION>


<S>                           <C>
A Letter From the Chairman.........2
Bond Market Overview.............4-5
Trust Overview.....................6
Financials.........................7
Shareholder Information.......Inside
</TABLE>
                          Back Cover




                                                                               1
<PAGE>
- ------------------------------------------------------------------------------- 
                           A Letter From the Chairman
- ------------------------------------------------------------------------------- 

[PHOTOGRAPH APPEARS HERE]

Dear Client:
Entering 1996, many analysts were forecasting that the economy would grow
modestly, inflation would remain level, interest rates would decline slightly
and the bond and stock markets would return to more "normal" annual returns.
 However, the first six months have produced quite different results. Following
a stream of economic reports showing that the economy was far stronger than had
been anticipated, investors became concerned early in the year about the
potential for rising inflation. In response, interest rates rose significantly.
The bond market declined -1.21% as measured by the Lehman Brothers Aggregate
Bond Index. And the 30-year U.S. Treasury bonds declined an even greater -9.35%.
 In contrast, stock market investors ignored the concerns of the bond market and
focused instead on strong corporate earnings. That drove the stock market up
10.10% for the period, as measured by the Standard and Poor's 500 Stock Index.
In fact, this six-month return matched the market's average 12-month rate of
return for the past two decades.
 Both the stock market and the bond market returns for early 1996 reinforce just
how unpredictable the markets can be. Consequently Allmerica remains focused on
providing you with quality products and investment options that can help you
reach your long-term financial goals - regardless of what happens in the short
term.
 As part of that commitment, Allmerica continues to offer you access to a broad
array of money managers with complementary investment strategies. Our Manager
Evaluation Committee, in conjunction with a leading pension consultant, has
carefully selected some of the best money managers available in a spectrum of
investment categories. This Committee meets quarterly to monitor each managers'
performance and recommend any changes which may be appropriate. Such was the
case recently. We are pleased to announce that effective July 1, 1996 Putnam
Investment Management, Inc. will assume sub-advisory responsibility of the
Select Growth Fund.
 This change reflects our commitment to carefully selecting each of our money
managers, ensuring they continue to earn their place on Allmerica's elite
roster.

On behalf of the Board of Directors,


/s/ John F. O'Brien
John F. O'Brien
Chairman
Allmerica Financial Life Insurance and Annuity Company


- ---------------------------------------------
 ...Allmerica remains focused on
providing you with quality products
and investment options that can help
you reach your long-term financial
goals - regardless of what happens in
the short term.
- ---------------------------------------------


2
<PAGE>
                                                                       -------- 
                                                                       Overview
                                                                       -------- 



                                  =  A S T  =


                                                                               3
<PAGE>
 
Bond Market 
Overview

1992: Government and corporate bonds outperformed the stock market.

1993: U.S. economy gains momentum. Consumer spending and installment debt
increase.

1994: Federal Reserve Board raises interest rates six times in an effort to slow
down the economy and keep inflation in check, sending bond prices sharply lower.

1995: U.S. bond market enjoys its third best performance in 30 years, thanks to
strong total returns from 30-year U.S. Treasuries and corporate issues.

 The first six months of this year have proven to be particularly trying for
bond investors. After experiencing the euphoria of double-digit returns in 1995,
investors entered 1996 with expectations of a strong performance or at least
positive results. However, as of June 30, 1996, the fixed income market posted a
negative return of -1.21%, as measured by the Lehman Brothers Aggregate Bond
Index.
 Entering the year, many analysts anticipated that a balanced budget agreement,
additional rate cuts by the Federal Reserve, and restrained economic growth
would sustain the performance of the bond market. Some economists were even
predicting the economy would slip into recession. While preliminary economic
data did prompt the Federal Reserve to cut interest rates by 0.25% in late
January, this trend did not last long.
 Beginning in February, a stream of positive economic reports revealed a much
healthier economy than had been expected. Such good news usually means bad news
for bond investors - and 1996 has been no exception. As interest rates climbed
rapidly from February to June, bond prices fell. In response, investors sold
fixed income securities across the maturity spectrum.
 During the second quarter of the year, continued signs of economic strength
further depressed bond prices. The yield curve steepened as yields of
intermediate and long-term maturities rose more than short-term maturities.
 Ironically, the poorest performance to date has been from those bonds many
believe to be the least "risky." As of June 30, 1996, 30-Year Treasury bonds
have lost about 9.35% since the first of the year.
 The only truly bright spot in the fixed income securities markets this year has
been high yield bonds. In fact, the high yield sector, up over 3%, was virtually
the only sector of the fixed income market to post positive returns during the
first half of 1996.
     
Investors lose         [PICTURE             [PICTURE           Economic date 
the debate over         HERE]                HERE]             growing at a    
the federal                                                    much faster rate
budget deficit                                                 than expected,   
will be resolved.                                              bad news for    
                                                               bond investors. 
- -------------------------------------------------------------------------------
1996                             JAN 96                           FEB 96  
- --------------------------------------------------------------------------------
                                Federal Reserve        [PICTURE
                                cuts target rate        APPEARS
                                for Federal             HERE]   
                                Funds another 
                                0.25%.







4
<PAGE>
 
  The relatively strong performance of high yield bonds can be attributed to two
key factors. High yield bonds are less sensitive to changes in interest rates
than other types of bonds, and the strong U.S. economy has reduced investors'
concerns about credit risk over the near term. Even though the supply of new
high yield issues increased during the second quarter of 1996, heavy demand
sustained their prices. This demand was fueled by large cash inflows from
investors now comfortable with assuming higher risk in hopes of higher yields.
  To date, corporate bonds have also benefited from the positive economic news.
On a duration-adjusted basis, corporate bonds outpaced U.S. Treasury bonds. An
improving economic outlook, solid credit fundamentals, limited new issues, and
strong investor demand all combined to boost the performance of most sectors of
the industrial market.
  Changes in interest rates had a somewhat positive effect on mortgage-backed
securities. As interest rates stabilized around 7% in the second quarter,
investors began to believe that their fears of refinancings were no longer
founded. Given that homeowners were shying away from any remortgaging activity,
mortgage yield spreads tightened and mortgage-backed securities outperformed the
bond market in general.
  By the end of June, several key signs of moderating growth began to calm
investor concerns that the economy was overheated. Prices of most commodities as
well as consumer goods have remained subdued. The consumer, hampered by existing
high debt burdens, has shown little inclination to go on a spending spree. And
the manufacturing sector outside of autos is exhibiting only modest signs of
improvement.
  Despite these trends, fears linger that the Federal Reserve will move to slow
growth by increasing interest rates and tightening the money supply. These fears
were reflected in the increasing yield differential between three-month U.S.
Treasury bills and two-year U.S. Treasury notes. In January, the yield for two-
year Treasuries exceeded three-month Treasuries by only one-tenth of one point.
By June, this differential had increased to almost a full percentage point.
  Going forward, many fixed income managers expect the U.S. economy to weaken in
the second half of 1996. If so, and the Federal Reserve refrains from raising
rates, bonds may recover in the second half of the year. If the Federal Reserve
does raise rates, bond prices could fall further. Either way, fixed income
securities may be headed for continued volatility, as analysts struggle to
predict the short-term direction of interest rates.

                                                        Riding interest
               Corporate bonds                          rates relieve fears     
               outspace Treasury                        of refinancing
               bonds, driven by                         activity, boosting  
               improving outlook                        mortgage-backed
               and strong demand.                       issues.


MAR 96                APR 96               MAY 96             JUNE 96

Interest              High yield bonds     Yields of inter-   Fears persist that
begin to rise, a      prove to be high-    mediate maturi-    Federal Reserve
trend that contin-    est performing       ties rise more     may again raise
ued through           sector of fixed      than either        rates to tighten 
remainder of          income market.       short- or long-    money supply.
period.                                    term securities.
                                                                               5
<PAGE>             

- -------------------------------------------------------------------------------
                          Allmerica Securities Trust
- -------------------------------------------------------------------------------

INVESTMENT SUB-ADVISER:
Allmerica Asset Management, Inc.

ABOUT THE FUND:
Seeks to generate a high rate of current income for distribution to
shareholders.

PERFORMANCE:
Net total return for the six-month period ending June 30, 1996:

Allmerica Securities Trust   -0.60%
The Lehman Brothers
 Corporate Bond Index        -2.14%
Lipper Closed-End General
 Bond Fund Average            1.30%
Lipper Corporate Debt 
 BBB-Rated Fund Average      -2.30%

PORTFOLIO COMPOSITION:
As of June 30, 1996, the sector
allocation of net assets was:

Corporate Notes and Bonds       72.65%
U.S. Government Obligations     14.05%
Asset-Backed Securities          7.76%
Brady Bonds                      2.32%       [Pie Chart Art Appears Here]
Cash Equivalents and Other       3.22%


During the unsettled bond market of early 1996, the Allmerica Securities Trust
returned a -0.60%, outperforming its benchmark by more than one percentage
point. Much of this outperformance is attributable to the Trust's emphasis on
high yield securities - one of the only bright spots in this year's fixed income
market. Investors realized a much lower 1.30% return on their investment as the
market sold off closed-end bond funds in general.
  Optimistic about the corporate bond market's prospects, management invested
heavily in BBB/Baa and below investment grade securities, which accounted for
32% and 35% of the Trust's respectively. Among the top performing corporate
sectors were airlines, driven by strong cashflow and forecasts for the first
industry profits since 1979, and cable/media, spurred by consolidation and the
increasing potential for resolution of credit-related issues for several
industry leaders. Twelve percent of the Trust was invested in these two sectors
at the close of the first quarter.
  During the second quarter, the Trust's management made two modifications to
its sizable cable/media holdings. First, it increased the Trust's overall
weighting by purchasing a 30-year Telecommunication, Inc. (TCI) Bond. Second,
the Fund extended the maturity of its Viacom holdings, replacing its 10-year
paper with 20-year paper.
  Exposure to the finance sector was also increased early in the year with the
purchase of two Yankee Bank issues, Merita Bank (Finland) and Banco Central-
Hispanoamericano (Spain), in addition to Legg Mason (brokerage) and Olympic
Financial (non-prime automobile financing). Also, two new below investment grade
names were added in the second quarter:  DiMon, Inc., a strong Ba-rated tobacco
grower, and Homeside, a new mortgage-servicing company.
  During the period there were two standout performers in the cable and finance
areas: Continental Cablevision and Center Financial Corp. Both issues benefited
from acquisition activity. Continental Cablevision was acquired by U.S. West
Communications, an A-rated company.  And First Union, another A-rated company,
announced it would acquire Center Financial Corp., a small Connecticut based
institution.
  Throughout most of this year, the Trust's management maintained a modestly
greater exposure to interest rate risk than its benchmark, although that
exposure was reduced in June as economic data indicated continued strong growth.

                          Allmerica Securities Trust
                            Historical Performance
<TABLE>
<CAPTION>
 
- ---------------------------------------------------- 
                         NAV          Total Return
                   Total Return %    on Market Value
- ----------------------------------------------------
<S>                <C>              <C>
 
1991.....................  20.33% ........... 20.97%
1992.....................  11.09% ........... 20.35%
1993.....................  12.65% ...........  6.87%
1994.....................  (2.41%)...........(12.48%)
1995.....................  18.58% ........... 21.71%
Through 6/30/96..........  (0.60%)........... (4.54%)
</TABLE>

The Lipper Closed-End General Bond Fund Average is an unmanaged index of 15
funds within the closed-end general bond category. The Lehman Brothers Corporate
Bond Index is an unmanaged index of all publically issued, fixed-rate, non-
convertible investment grade corporate debt. The Lipper Corporate Debt BBB-Rated
Fund Average is a non-weighted index of 98 funds within the Corporate BBB Debt
Fund category.


6
<PAGE>
                                   ---------- 
                                   Financials
                                   ----------

                                  =  A S T  =


                                       


                                                                               7
<PAGE>
 
                      This page left blank intentionally.
<PAGE>
 
                           Allmerica Securities Trust


              PORTFOLIO OF INVESTMENTS . June 30, 1996 (Unaudited)

<TABLE> 
<CAPTION> 

                                                        Moody's          Value
Par Value                                               Ratings         (Note 2)
- --------------------------------------------------------------------------------
<S>                                                     <C>         <C>     
CORPORATE NOTES AND BONDS - 72.65%

            Oil, Gas and Petroleum - 19.59%

$2,000,000  ANR Pipeline Co.
            Debenture 
            9.63%, 11/01/21                             Baa2        $  2,385,660

   500,000  Buckeye Pipeline
            First Mortgage, Series I
            9.72%, 12/15/96 (B)                         --               507,625

 1,500,000  Cinergy Corp.
            First Mortgage
            7.20%, 10/01/23                             A3             1,366,335

 1,000,000  Clark Refining &
            Marketing, Inc.
            Senior Notes
            9.50%, 09/15/04                             Ba2            1,020,000

 2,100,000  Noram Energy Corp.
            Debenture
            8.90%, 12/15/06                             Ba2            2,286,039

 1,000,000  Parker & Parsley Petroleum Co.
            Senior Notes
            8.88%, 04/15/05                             Ba2            1,075,920

 1,450,000  Seagull Energy Corp.
            Senior Notes
            7.88%, 08/01/03                             Ba3            1,395,625

 1,250,000  Snyder Oil Corp.
            Subordinated Notes
            7.00%, 05/15/01                             B1             1,143,750
 
 1,500,000  Southwest Gas Corp.
            Debenture
            9.38%, 02/01/17                             Baa3           1,574,745

 1,250,000  Texas Eastern Transmission Corp.
            Debenture
            10.00%, 08/15/01                            Baa1           1,389,838

 600,000    Texas Utilities Electric Co.
            First Mortgage
            7.38%, 10/01/25                             Baa2             552,876

 1,000,000  Tosco Corp.
            7.00%, 07/15/00                             Baa3             989,950
           
 2,000,000  USX-Marathon Group, Inc.
            Debenture
            8.88%, 09/15/97                             Baa3           2,053,520

 1,000,000  Valero Management Partnership, LP
            First Mortgage Notes, Series J
            10.02%, 03/15/07 (B)                        --             1,102,890
                                                                    ------------
                                                                      18,844,773
                                                                    ------------

            Finance - 8.57%

 1,000,000  BCH Cayman Islands, Ltd.
            Yankee Subordinated Notes,
            Guaranteed
            6.50%, 02/15/06                             A3               922,080

 1,000,000  Cenfed Financial Corp.
            11.17%, 12/15/01 (A)                        Bb             1,073,750
 
 1,000,000  Center Financial Corp.
            Subordinated Notes
            8.38%, 10/01/02                             --             1,057,500

 1,000,000  First Tennessee National Corp.
            Subordinated Notes
            6.75%, 11/15/05                             A2               950,190

   433,680  Jennifer Holding Corp.
            12.25%, 12/30/98 (B)                        --               452,324
   
   781,524  Mack Trust, Inc.
            10.91%, 04/01/99 (B)                        --               792,739

 1,000,000  Merita Bank, Ltd.
            Yankee Subordinated Notes
            6.50%, 01/15/06                             A3               929,640

 1,000,000  Olympic Financial, Ltd.
            Senior Notes
            13.00%, 05/01/00                            B2             1,095,000

 1,000,000  St. George Bank
            Subordinated Notes
            7.15%, 10/15/05 (A)                         Baa2             967,160
                                                                    ------------
                                                                       8,240,383
                                                                    ------------
 
            Communications - 5.91%
 
 1,000,000  C-Tec Cable Systems, Inc.
            Senior Secured Notes
            9.65%, 09/01/99 (B)                         --             1,038,080

 1,000,000  Continental Cablevision, Inc.
            Senior Notes
            8.50%, 09/15/01                             Ba2            1,046,960

   750,000  Continental Cablevision, Inc.
            Senior Notes
            8.30%, 05/15/06 (A)                         Ba2              775,470

   555,000  GTE Corp.
            Debenture
            8.75%, 11/01/21                             A3               613,419

   400,000  Kerrville Telephone Co.
            9.76%, 03/29/00 (B)                         --               420,532

 1,000,000  TCI Communications, Inc.
            Debenture
            7.88%, 02/15/26                             Ba1              880,740
 
 1,000,000  Viacom, Inc.
            Senior Debenture
            7.63%, 01/15/16                             B1               908,800
                                                                    ------------
                                                                       5,684,001
                                                                    ------------
</TABLE> 


                      See Notes to Financial Statements.
- --------------------------------------------------------------------------------
                                                                             F-1
<PAGE>
 
                           Allmerica Securities Trust

        PORTFOLIO OF INVESTMENTS, Continued . June 30, 1996 (Unaudited)
- --------------------------------------------------------------------------------
<TABLE> 
<CAPTION> 
                                                        Moody's          Value
Par Value                                               Ratings         (Note 2)
- --------------------------------------------------------------------------------
<S>                                                     <C>         <C>     
            Utilities - 5.09%

$  771,509  Midland Funding Corp.
            Debenture, Series C-91
            10.33%, 07/23/02                            Ba3         $    812,978
                                                                    
 1,332,000  North Atlantic Energy Corp.
            First Mortgage, Series A
            9.05%, 06/01/02                             Ba1            1,318,147

 1,270,000  Sithe/Independence Funding Corp.
            Series A
            9.00%, 12/30/13                             Baa3           1,226,020

 1,500,000  Texas-New Mexico Power Co.
            First Mortgage, Series U
            9.25%, 09/15/00                             Ba3            1,536,285
                                                                    ------------
                                                                       4,893,430
                                                                    ------------
            Industrial - 4.48%
 
 1,000,000  Homeside, Inc.
            Senior Notes
            11.25%, 05/15/03 (A)                        --             1,030,000

 1,000,000  RPM, Inc.
            Senior Notes
            7.00%, 06/15/05                             Baa2             963,500

 1,300,000  Unisys Corp.
            8.88%, 07/15/97                             B1             1,300,000

 1,000,000  Westinghouse Electric Corp.
            Debenture
            8.88%, 06/01/01                             Ba1            1,020,030
                                                                    ------------
                                                                       4,313,530
                                                                    ------------

            Primary Metals - 4.27%

 2,000,000  Bethlehem Steel Corp.
            Senior Notes
            10.38%, 09/01/03                            B1             2,120,000

 2,000,000  Usinor Sacilor
            Senior Notes, Series A
            7.16%, 03/25/04 (B)                         --             1,990,860
                                                                    ------------
                                                                       4,110,860
                                                                    ------------

            Transportation - 4.25%
 
 1,000,000  AMR Corp.
            Debenture
            10.00%, 02/01/01                            Baa3           1,100,960

 1,592,194  Delta Airlines, Inc.
            9.23%, 07/02/02 (B)                         --             1,651,281

   659,000  USAir, Inc., Series D
            Equipment Trust
            10.30%, 01/15/00                            B1               669,017

   661,000  USAir, Inc., Series F
            Equipment Trust
            10.30%, 01/15/00                            B1               671,047
                                                                    ------------
                                                                       4,092,305
                                                                    ------------

             Consumer Products - 3.69%
 
 1,000,000   Chiquita Brands International, Inc.
             Senior Notes
             9.13%, 03/01/04                            B1               970,000

 1,000,000   DiMon, Inc.
             Senior Notes
             8.88%, 06/01/06                            Ba1              995,000
 
 1,600,000   Ralston Purina Co.
             Debenture
             7.75%, 10/01/15                            Baa1           1,581,456
                                                                    ------------
                                                                       3,546,456
                                                                    ------------

             Paper - 3.34%

 1,160,000   Boise Cascade Corp.
             10.13%, 12/15/97                           Baa3           1,217,084

 1,000,000   Fort Howard Corp.
             Senior Notes
             8.25%, 02/01/02                            B2               960,000

 1,000,000   Stone Container Corp.
             Senior Notes
             11.88%, 12/01/98                           B1             1,040,000
                                                                    ------------
                                                                       3,217,084
                                                                    ------------

             Merchandising and Retail - 3.21%

 1,000,000   Federated Department Stores, Inc.
             Senior Notes
             10.00%, 02/15/01                           Ba1            1,052,500

 1,000,000   Kroger Co.
             Senior Subordinated Notes
             10.00%, 05/01/99                           Ba1            1,065,000
 
 1,000,000   USG Corp., Senior Notes
             8.50%, 08/01/05                            Ba2              967,500
                                                                    ------------
                                                                       3,085,000
                                                                    ------------

             Printing and Publishing - 3.06%

 1,000,000   News America Holdings, Inc.
             Senior Notes
             12.00%, 12/15/01                           Baa3           1,084,740

   850,000   Time Warner Entertainment Co., LP
             Senior Debenture
             8.38%, 03/15/23                            Baa3             827,577
 
 1,000,000   Time Warner, Inc.
             Debenture
             9.15%, 02/01/23                            Ba1            1,033,940
                                                                    ------------
                                                                       2,946,257
                                                                    ------------
</TABLE> 

See Notes to Financial Statements.
- --------------------------------------------------------------------------------
F-2
<PAGE>
 
                           Allmerica Securities Trust

        PORTFOLIO OF INVESTMENTS, Continued . June 30, 1996 (Unaudited)
- --------------------------------------------------------------------------------
<TABLE> 
<CAPTION> 
                                                        Moody's          Value
Par Value                                               Ratings         (Note 2)
- --------------------------------------------------------------------------------
<S>                                                     <C>         <C>      
 
             Securities Brokers, Dealers and
             Exchanges - 2.98%
 
$1,000,000   Donaldson Lufkin & Jenrette, Inc.
             Senior Notes
             6.88%, 11/01/05                            Baa1        $    947,700

 1,000,000   Jones (Edward D.) & Co., LP
             7.95%, 04/15/06 (B)                        --               992,700

 1,000,000   Legg Mason, Inc.
             Senior Notes
             6.50%, 02/15/06                            Baa2             922,080
                                                                    ------------
                                                                       2,862,480
                                                                    ------------
             Health Care - 2.13%

 1,000,000   Tenet Healthcare Corp.
             Senior Notes
             9.63%, 09/01/02                            Ba1            1,062,500

   975,000   Tenet Healthcare Corp.
             Senior Notes
             8.63%, 12/01/03                            Ba1              988,406
                                                                    ------------
                                                                       2,050,906
                                                                    ------------

             Manufacturing - 1.08%

 1,000,000   Wyman-Gordon Co.
             Senior Notes
             10.75%, 03/15/03                           B1             1,040,000
 

             Pharmaceuticals - 1.00%

 1,000,000   Georgia Gulf Corp.
             7.63%, 11/15/05                            Ba1              965,000
                                                                    ------------
             Total Corporate Notes and Bonds                          69,892,465
                                                                    ------------
             (Cost $69,202,777)
U.S. GOVERNMENT OBLIGATIONS -  14.05%
 
             U.S. Treasury Bonds - 12.51%
 
 4,950,000   7.25%, 05/15/16                            Aaa            5,066,028
 6,892,000   7.13%, 02/15/23                            Aaa            6,966,295
                                                                    ------------
                                                                      12,032,323
                                                                    ------------

             U.S. Treasury Note - 1.54%

 1,500,000   6.50%, 05/15/05                            Aaa            1,480,305
                                                                    ------------
              Total U.S. Government Obligations                       13,512,628
                                                                    ------------
             (Cost $14,031,472)



ASSET-BACKED SECURITIES - 7.76%

 1,000,000   American Airlines, 1991-C2
             Pass-Through Trust
             9.73%, 09/29/14                            A2            $1,125,880

   560,492   Eaglemark Trust, 1995-1
             Harley Davidson
             6.80%, 12/15/01 (A)                        Aaa              562,768

 1,000,000   First Plus Home Loan Trust, Class A5,
             Series 1996-2
             7.47%, 02/20/11                            --             1,010,625
 
   787,927   Green Tree Financial Corp., 1995-A
             7.25%, 07/15/05                            P1               786,367

 1,000,000   Premier Auto Trust, Class A4
             Series 1995-4
             6.00%, 05/06/00                            Aaa              994,060

   650,000   Resolution Trust Corp.
             1995-C1, A4c
             6.85%, 02/25/27                            Aaa              630,500

 1,380,457   United Air Lines, 1991-B1
             Pass-Through Trust
             9.30%, 03/22/08                            Baa1           1,475,391

   147,195   Western Financial 1994-2
             Grantor Trust, Class A2
             6.38%, 09/01/99                            Aaa              147,792

   725,589   Western Financial 1995-2
             Grantor Trust, Class A2
             7.10%, 07/01/00                            Aaa              736,700
                                                                    ------------
             Total Asset-Backed Securities                             7,470,083
                                                                    ------------
             (Cost $7,244,909)
 
BRADY BONDS (C) - 2.32%
 
   950,000   Republic of Colombia
             7.25%, 02/23/04                            Baa3             864,500

 1,500,000   United Mexican States
             8.50%, 09/15/02                            Ba2            1,365,000
                                                                    ------------
             Total Brady Bonds                                         2,229,500
                                                                    ------------
             (Cost $2,109,474)
</TABLE> 

                      See Notes to Financial Statements.
- --------------------------------------------------------
                                                                             F-3
<PAGE>
 
                           Allmerica Securities Trust

        PORTFOLIO OF INVESTMENTS, Continued . June 30, 1996 (Unaudited)
- --------------------------------------------------------------------------------
<TABLE> 
<CAPTION> 
 
                                                        Moody's          Value
Shares                                                  Ratings         (Note 2)
- --------------------------------------------------------------------------------
<S>                                                     <C>         <C>     
INVESTMENT COMPANY - 1.21%
 
 1,164,532   Goldman Sachs Financial Square
             Prime Obligation
             Portfolio Fund                             Aaa         $  1,164,532
                                                                    ------------
             Total Investment Company                                  1,164,532
                                                                    ------------
             (Cost $1,164,532)
 
Total Investments - 97.99%                                            94,269,208
                                                                    ------------
(Cost $93,753,164)
Net Other Assets and Liabilities - 2.01%                               1,930,343
                                                                    ------------
Net Assets - 100.00%                                                $ 96,199,551
                                                                    ============
</TABLE>

(A)  Securities exempt from registration under Rule 144A of the
     Securities Act of 1933. These securities may be resold, in
     transactions exempt from registration, to qualified institutions
     buyers. At June 30, 1996, these securities amounted to      
     $4,409,148 or 4.58% of Net Assets.
(B)  Restricted Securities - Represent ownership in private placement
     investments which have not been registered with the Securities and
     Exchange Commission under the Securities Act of 1933. For
     additional information concerning each restricted security, see
     Note 7.
(C)  U.S. currency denominated.

Other Information

The composition of both long-term and short-term debt holdings
as a percentage of total value of investment in securities,
is as follows:
 
       Moody's Rating
      Aaa        18.83%
      A           6.27%
      Baa        23.47%
      Ba         24.04%
      Bb          1.14%
      B          12.64%
      P-1         0.83%
      Unrated    12.78%

See Notes to Financial Statements.
- ----------------------------------
F-4
<PAGE>
 
                           Allmerica Securities Trust

        STATEMENT OF ASSETS AND LIABILITIES . June 30, 1996 (Unaudited)
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>
 
<S>                                                                <C> 
ASSETS:

 Investments (Note 2):
   Investments at cost...........................................  $ 93,753,164
   Net unrealized appreciation (depreciation)....................       516,044
                                                                   ------------
     Total investments at value..................................    94,269,208
 Cash............................................................        86,958
 Short-term investments held as collateral for securities loaned
  (Note 2).......................................................     8,405,069
 Interest and dividend receivables...............................     1,965,716
                                                                   ------------
     Total Assets................................................   104,726,951
                                                                   ------------

LIABILITIES:
 Advisory fee payable (Note 3)...................................        40,420
 Accrued expenses and other payables.............................        81,911
 Collateral for securities loaned (Note 2).......................     8,405,069
                                                                   ------------
     Total Liabilities...........................................     8,527,400
                                                                   ------------
NET ASSETS.......................................................  $ 96,199,551
                                                                   ============
NET ASSETS consist of:
 Par Value (Note 4)..............................................  $  8,592,306
 Paid-in capital.................................................    88,551,952
 Undistributed net investment income.............................       206,051
 Accumulated (distribution in excess of) net realized gain
  (loss) on investments sold.....................................    (1,666,802)
 Net unrealized appreciation (depreciation) of investments.......       516,044
                                                                   ------------
TOTAL NET ASSETS.................................................  $ 96,199,551
                                                                   ============ 
</TABLE>

<TABLE>
<CAPTION> 
<S>                                                                <C>  
Shares of beneficial interest outstanding (10,000,000 
authorized shares with par value of $1.00).......................     8,592,306

NET ASSET VALUE
 Per Share.......................................................  $     11.196
                                                                   ============ 
</TABLE> 


                      See Notes to Financial Statements.
- --------------------------------------------------------
                                                                             F-5
<PAGE>
 
                           Allmerica Securities Trust

  STATEMENT OF OPERATIONS . For the Six Months Ended June 30, 1996 (Unaudited)
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>
 
<S>                                                                <C> 
INVESTMENT INCOME:

 Interest (Note 2)...............................................  $  3,978,809
 Dividends (Note 2)..............................................        23,798
                                                                   ------------
   Total investment income.......................................     4,002,607
                                                                   ------------


EXPENSES:
 Investment advisory fees (Note 3)...............................       246,677
 Custodian fees..................................................         1,999
 Fund accounting fees (Note 3)...................................        19,000
 Transfer agent fees.............................................        24,523
 Legal fees......................................................         2,000
 Audit fees......................................................         4,000
 Trustees' fees and expenses (Note 3)............................         6,000
 Reports to shareholders.........................................         8,622
 New York Stock Exchange fees....................................         8,000
 Miscellaneous...................................................         6,203
                                                                   ------------
   Total expenses................................................       327,024
                                                                   ------------
NET INVESTMENT INCOME............................................     3,675,583
                                                                   ------------
NET REALIZED AND UNREALIZED
 GAIN (LOSS) ON INVESTMENTS (Note 2):
 Net realized gain (loss) on investments sold....................       286,697
 Net change in unrealized appreciation (depreciation)
 of investments..................................................    (4,636,692)
                                                                   ------------
NET GAIN (LOSS) ON INVESTMENTS...................................    (4,349,995)
                                                                   ------------

NET INCREASE (DECREASE) IN NET
 ASSETS RESULTING FROM OPERATIONS................................  $   (674,412)
                                                                   ============
</TABLE> 




                      See Notes to Financial Statements.
F-6                   ----------------------------------------------------------
<PAGE>
 

                           Allmerica Securities Trust

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

<TABLE> 
<CAPTION> 

                                                               Six Months Ended,
                                                                   June 30,         Year Ended
                                                                    1996            December 31,
                                                                (Unaudited)            1995
                                                               _________________________________
NET ASSETS at beginning of period......................        $   100,483,120    $   91,457,903
                                                               ---------------    -------------- 
<S>                                                            <C>                <C> 
INCREASE (DECREASE) IN NET ASSETS RESULTING FROM OPERATIONS:

 Net investment income.................................              3,675,583         7,392,646
 Net realized gain (loss) on investments sold..........                286,697           626,599
 Net change in unrealized appreciation (depreciation)
  of investments.......................................             (4,636,692)        8,395,355
                                                               ---------------    -------------- 
 Net increase (decrease) in net assets resulting from
  operations...........................................               (674,412)       16,414,600
                                                               ---------------    -------------- 
DISTRIBUTIONS TO SHAREHOLDERS FROM:
 Net investment income.................................             (3,609,157)       (7,389,383)
                                                               ---------------    -------------- 

CAPITAL SHARE TRANSACTIONS:
 Issued to shareholders in reinvestment of dividends...                     --                --
                                                               ---------------    -------------- 
   Total increase (decrease) in net assets.............             (4,283,569)        9,025,217
                                                               ---------------    -------------- 

NET ASSETS at end of period (including line A).........        $    96,199,551    $  100,483,120
                                                               ===============    ============== 
 

(A) Undistributed net investment income................        $       206,051    $      139,625
                                                               ===============    ============== 
 
OTHER INFORMATION:
Share Transactions:
 Issued to shareholders in reinvestment of dividends...                     --                --
                                                               ===============    ==============  
                                                See Notes to Financial Statements.
- ----------------------------------------------------------------------------------
                                                                                             F-7
</TABLE> 
                      
<PAGE>
 
                           Allmerica Securities Trust

                              FINANCIAL HIGHLIGHTS
- --------------------------------------------------------------------------------
                For a Share Outstanding Throughout Each Period

<TABLE> 
<CAPTION> 
                                          Six Months Ended
                                              June 30,               Year Ended December 31,
                                               1996     ------------------------------------------------ 
                                           (Unaudited)    1995      1994      1993       1992     1991
- -------------------------------------------------------------------------------------------------------- 
<S>                                               <C>        <C>       <C>        <C>       <C>       <C>
Net Asset Value, beginning of period......       $   11.694    $   10.644   $   11.773   $   11.302   $   11.084   $   10.110
                                                 ----------    ----------   ----------   ----------   ----------   ---------- 
Income from Investment Operations:              
 Net investment income....................            0.428         0.860        0.843        0.909        0.954        0.980
 Net realized and unrealized gain (loss)        
   on investments.........................           (0.506)        1.050       (1.122)       0.472        0.234        0.964
                                                 ----------    ----------   ----------   ----------   ----------   ---------- 
     Total from Investment Operations:....           (0.078)        1.910       (0.279)       1.381        1.188        1.944
                                                 ----------    ----------   ----------   ----------   ----------   ---------- 
Less Distributions:                             
 Dividends from net investment income.....           (0.420)       (0.860)      (0.850)      (0.910)      (0.970)      (0.970)
                                                 ----------    ----------   ----------   ----------   ----------   ---------- 
                                                
Net increase (decrease) in net asset value           (0.498)        1.050       (1.129)       0.471        0.218        0.974
                                                 ----------    ----------   ----------   ----------   ----------   ---------- 
 Net Asset Value, end of period..........        $   11.196    $   11.694   $   10.644   $   11.773   $   11.302   $   11.084
                                                 ==========    ==========   ==========   ==========   ==========   ==========
                                                
                                                
Market Value, end of period..............        $    9.625    $   10.500   $    9.375   $   11.625   $   11.750   $   10.625
                                                 ==========    ==========   ==========   ==========   ==========   ==========
<CAPTION>
 
Total Return on Market Value, end of period..         (4.54)%**     21.71%      (12.48)%       6.87%       20.35%       20.97%
 
Ratios/Supplemental Data:
Net Assets, end of period (000's)............    $   96,200    $  100,483   $   91,458   $  101,161   $   95,417   $   93,571
Ratios to average net assets:                 
 Net investment income.......................          7.59%*        7.64%        7.59%        7.72%        8.49%        9.29%
 Operating expenses..........................          0.68%*        0.77%        0.78%        0.74%        0.76%        0.77%
Portfolio Turnover Rate......................          0.23%           42%          42%          55%          55%          43%
- -------------------------------
</TABLE>
*   Annualized
** Not Annualized



                      See Notes to Financial Statements.
F-8                   ----------------------------------------------------------

<PAGE>
- ------------------------------------------------------------------------------- 
                           ALLMERICA SECURITIES TRUST
- ------------------------------------------------------------------------------- 

           NOTES TO FINANCIAL STATEMENTS . June 30, 1996 (Unaudited)
- -------------------------------------------------------------------------------


1.  ORGANIZATION

Allmerica Securities Trust (the "Trust") was organized as a Massachusetts
business trust on June 30, 1986 and is registered under the Investment Company
Act of 1940, as amended, as a diversified, closed-end management investment
company. The primary investment objective is to provide a high rate of current
income with capital appreciation as a secondary objective.

2.  SIGNIFICANT ACCOUNTING POLICIES

The preparation of financial statements in conformity with generally accepted
accounting principles requires management to make estimates and assumptions that
affect the reported amounts of assets and liabilities and disclosure of
contingent assets and liabilities at the date of the financial statements and
the reported amounts of revenues and expenses during the reporting period.
Actual results could differ from those estimates.

The following is a summary of significant accounting policies which are in
conformity with generally accepted accounting principles consistently followed
by the Trust in the preparation of its financial statements.

  Security Valuation

Corporate debt securities and debt securities of the U.S. government and its
agencies (other than short-term investments) are valued by an independent
pricing service approved by the Board of Trustees which utilizes market
quotations and transactions, quotations from dealers and various relationships
among securities in determining value. If not valued by a pricing service, such
securities are valued at prices obtained from independent brokers. Investments
with prices that cannot be readily obtained are carried at fair value as
determined in good faith under consistently applied procedures established by
and under the supervision of the Board of Trustees. Short-term investments that
mature in 60 days or less are valued at amortized cost.

  Securities Transactions and Investment Income

Securities transactions are recorded on the trade date. Net realized gains and
losses on investments sold are recorded on the basis of identified cost.
Interest income is recorded on the accrual basis and consists of interest
accrued and, if applicable, discount earned. Dividend income is recorded on the
ex-dividend date.

  Federal Taxes

The Trust intends to continue to qualify as a "regulated investment company"
under Subchapter M of the Internal Revenue Code of 1986, as amended. By so
qualifying, the Trust will not be subject to Federal income taxes to the extent
that it distributes all of its taxable income and net realized gains, if any,
for its tax year ending December 31. In addition, by distributing during each
calendar year substantially all of its net investment income, capital gains and
certain other amounts, if any, the Trust will not be subject to Federal excise
tax. Therefore, no Federal income tax provision is required.

Paid-in capital, undistributed net investment income and accumulated net
realized gain (loss) have been adjusted in the Statement of Assets and
Liabilities for permanent book-tax differences for the year ended December 31,
1995.


F-9
<PAGE>
- --------------------------------------------------------------------------------
                           Allmerica Securities Trust
- --------------------------------------------------------------------------------

      NOTES TO FINANCIAL STATEMENTS, Continued . June 30, 1996 (Unaudited)
- --------------------------------------------------------------------------------


  Distribution to Shareholders

Dividends to shareholders from net investment income are recorded on the ex-
dividend date and paid quarterly. Net realized capital gains, if any, are
distributed at least annually. Income 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 for paydown gains/losses on certain securities, market
discounts and losses deferred due to wash sales. Any taxable income or gain
remaining at fiscal year end will be distributed in the following year.

Current year permanent book-tax differences, if any, are not included in ending
undistributed net investment income for the purpose of calculating net
investment income per share in the Financial Highlights.

  Securities Lending

The Trust loans securities to certain brokers who pay the Trust negotiated
lenders' fees. Collateral must be maintained at a value at least equal to the
value at all times of the securities lent. At June 30, 1996, bonds with
aggregate value of approximately $8,405,069 were on loan to brokers. The loans
were secured with cash collateral of $8,405,069, which was subsequently invested
in cash equivalents. The related income earned was $10,438 which is included in
interest income for the six months ended June 30, 1996.

3.  INVESTMENT ADVISORY FEES AND
    OTHER RELATED PARTY TRANSACTIONS

Allmerica Asset Management, Inc. ("AAM"), a wholly-owned subsidiary of First
Allmerica Financial Life Insurance Company ("First Allmerica"), serves as
Investment Adviser to the Trust. For these services, the Trust pays AAM
aggregate monthly compensation at an annual rate of (a) 3/10 of 1% of average
total net assets plus (b) 2-1/2% of the amount of interest and dividend income.

To the extent that normal operating expenses of the Trust, excluding taxes,
interest, brokerage commissions and extraordinary expenses, but including the
investment advisory fee, exceed 1.5% of the first $30,000,000 of the Trust's
average weekly net assets and 1% of the Trust's average total net assets in
excess of $30,000,000 for any fiscal year, AAM will bear such excess expenses.

AAM has entered into an Administrative Services Agreement with First Data
Investors Services Group, Inc. ("FDISG"), formerly The Shareholder Services
Group, Inc., a wholly-owned subsidiary of First Data Corporation, whereby FDISG
performs administrative services for the Trust and is entitled to receive an
administrative fee and certain out-of-pocket expenses. AAM is solely responsible
for the payment of the administration fee to FDISG. In a separate agreement,
FDISG receives fees from the Trust for certain fund accounting services provided
in its capacity as pricing and bookkeeping agent.

The Trust pays no salaries or compensation to any of its officers. Trustees who
are not directors, officers, or employees of the Trust or the Investment Adviser
are reimbursed for their travel expenses in attending meetings of the Trustees
and receive quarterly meeting and retainer fees for their services. Such amounts
are paid by the Trust.


F-10                         --------------------------------------------------

<PAGE>
- --------------------------------------------------------------------------------
                           Allmerica Securities Trust
- --------------------------------------------------------------------------------

      NOTES TO FINANCIAL STATEMENTS, Continued . June 30, 1996 (Unaudited)
- --------------------------------------------------------------------------------


4.  SHARES OF BENEFICIAL INTEREST

There are 10,000,000 shares of $1.00 par value common stock authorized.

5.  PURCHASES AND SALES OF SECURITIES

The cost of purchases and proceeds from sales of investment securities,
excluding short-term investments, for the six months ended June 30, 1996 were as
follows:
<TABLE>
<CAPTION>      
                        Purchases                Sales
               Government      Other     Government     Other
- -------------------------------------------------------------------------------
              <C>          <C>          <C>          <C>  
              $10,561,211  $11,373,744  $12,440,777  $10,398,071
</TABLE>

At June 30, 1996 aggregate gross unrealized appreciation for all securities in
which there was an excess of value over tax cost and aggregate gross unrealized
depreciation for all securities in which there was an excess of tax cost over
value were as follows:
<TABLE>
<CAPTION>
 
                                   Tax Basis

                                            Net Unrealized
         Unrealized          Unrealized      Appreciation
        Appreciation        Depreciation    (Depreciation)      Cost
- --------------------------------------------------------------------------------
          <C>                 <C>              <C>           <C>
          $2,563,153          $2,047,109       $516,044      $93,753,164
</TABLE>

6.  CAPITAL LOSS CARRYFORWARD

As of December 31, 1995, the Trust had available for Federal tax purposes unused
capital loss carryforwards of $234,835, $1,458,655 and $260,009 expiring in
1997, 1998 and 2002, respectively. For the year ended December 31, 1995, the
Trust utilized $466,047 of capital loss carryforwards.

                                                                            F-11
<PAGE>
- ------------------------------------------------------------------------------- 
                           ALLMERICA SECURITIES TRUST
- ------------------------------------------------------------------------------- 


      NOTES TO FINANCIAL STATEMENTS, Continued . June 30, 1996 (Unaudited)
- ------------------------------------------------------------------------------- 



7.  RESTRICTED SECURITIES

At June 30, 1996, the Trust owned the following restricted securities
constituting 9.30% of net assets which may not be publicly sold without
registration under the Securities Act of 1933. The Trust would bear the
registration costs in connection with the disposition of restricted securities
held in the portfolio. The Trust does not have the right to demand that such
securities be registered. The value of these securities is determined by
valuations supplied by a pricing service or brokers or, if not available, in
good faith by or at the direction of the Trustees. Additional information on
restricted securities is as follows:
<TABLE>
<CAPTION>
 
                                         Date of       Par        Cost at
Issuer                                 Acquisition    Amount    Acquisition     Value
- -----------------------------------------------------------------------------------------
<S>                                    <C>          <C>         <C>          <C>
Buckeye Pipeline Co., L.P.                12/23/86  $  500,000   $  500,000   $  507,625
C-Tec Cable Systems, Inc.                 07/06/89   1,000,000    1,000,000    1,038,080
Delta Airlines, Inc.                      12/12/91   1,592,194    1,610,978    1,651,281
Jennifer Holding Corp.                    07/17/87     433,680      461,334      452,324
Jones, Edward D. & Co., L.P.              05/06/94   1,000,000    1,000,000      992,700
Kerrville Telephone Co.                   02/09/90     400,000      400,000      420,532
Mack Trust, Inc.                          07/14/95     781,524      814,286      792,739
Usinor Sacilor                            01/14/94   2,000,000    2,000,000    1,990,860
Valero Management Partnership, L.P.       03/04/87   1,000,000    1,000,000    1,102,890
                                                                 ------------------------
Total                                                            $8,786,598   $8,949,031
                                                                 ========================
</TABLE>
<PAGE>
- --------------------------------------------------------------------------------
                           Allmerica Securities Trust
- --------------------------------------------------------------------------------

                         OTHER INFORMATION (Unaudited)
- --------------------------------------------------------------------------------

SHAREHOLDER VOTING RESULTS (Unaudited):

At the Annual Meeting of Shareholders, held on April 17, 1996, results of 
shareholder voting for the election of Trustees were as follows:


<TABLE>
<CAPTION>
 
 
                                                  
       Shares For      Name of Trustee   % of Shares Voted   Shares Withheld
       ----------      ---------------   -----------------   ---------------
                                                         
<S>                    <C>                 <C>               <C> 
       6,672,194       John F. O'Brien          97.98             137,646
       6,686,482       Russell E. Fuller        98.19             123,358
       6,673,577       Gordon Holmes            98.00             136,263
       6,679,888       Bruce E. Langton         98.09             129,952
       6,689,702       John P. Kavanaugh        98.24             120,138
       6,672,456       Attiat F. Ott            97.98             137,384
       6,699,768       Paul D. Paganucci        98.38             110,072
       6,696,912       Richard M. Reilly        98.34             112,928
       6,670,139       Ranne P. Warner          97.95             139,701
       6,691,544       Thomas S. Zocco          98.26             118,296
</TABLE>

By a vote of 6,647,527 shares in favor, representing 77.37% of shares
outstanding, with 162,313 shares withheld, shareholders ratified and approved
the appointment of Price Waterhouse LLP as independent accountants for the Trust
for the fiscal year ending December 31, 1996.
<TABLE>
<CAPTION>
 
QUARTERLY DATA (Unaudited):
                                                     Net realized and         Net increase (decrease)
                              Net investment     unrealized gains (losses)    in net assets resulting
                                  income              on investments              from operations
                             ----------------   --------------------------   -------------------------  
               Total
 Quarterly   Investment                 Per                      Per                             Per
  period       Income       Amount     Share      Amount        Share         Amount            Share
- ------------------------------------------------------------------------------------------------------
<S>          <C>          <C>          <C>     <C>            <C>         <C>              <C> 
1994
3/31/94     $2,051,933   $1,866,933  $ 0.22   $(4,283,505)    $ (0.50)     $(2,416,572)     $ (0.28)               
6/30/94      1,946,889    1,756,990    0.20    (3,048,006)      (0.36)      (1,291,016)       (0.15)               
9/30/94      2,007,141    1,818,461    0.21      (541,387)      (0.06)       1,277,074         0.15                
12/31/94     1,980,461    1,800,418    0.21    (1,769,635)      (0.21)          30,783         0.00                

1995                                                                                                              
3/31/95      2,011,795    1,831,470    0.21     2,300,857        0.27        4,132,327         0.48                
6/30/95      2,005,417    1,822,485    0.21     4,093,980        0.48        5,916,465         0.69                
9/30/95      2,075,239    1,896,060    0.22       432,024        0.05        2,328,084         0.27                
12/31/95     2,042,117    1,842,631    0.22     2,195,093        0.25        4,037,724         0.47                
                                                                                                                     
1996                                                                                                              
3/31/96      2,005,042    1,816,051   0.211    (3,493,629)     (0.406)      (1,677,578)      (0.195)               
6/30/96      1,997,565    1,859,532   0.217      (856,366)     (0.100)       1,003,166        0.117                

</TABLE>

- --------------------------------------------                                F-13



<PAGE>
- --------------------------------------------------------------------------------
                           ALLMERICA SECURITIES TRUST
- --------------------------------------------------------------------------------
                             REGULATORY DISCLOSURES
- --------------------------------------------------------------------------------


The performance data quoted represents past performance and the investment
return and principal value of an investment will fluctuate so that an investor's
shares, when redeemed, may be worth more or less than their original cost.

This report is not authorized for distribution to prospective purchasers of
Allmerica Securities Trust unless accompanied or preceded by an effective
prospectus for the Trust which includes information related to charges and
expenses.












F-14                                   -----------------------------------------
<PAGE>
 
To be preceded or accompanied by the current prospectus.  Read carefully before 
                                  investing.


                            [GRAPHIC APPEARS HERE]



 First Allmerica Financial Life Insurance Company . Allmerica Financial Life 
     Insurance and Annuity Company (licensed in all states except NY & HI)
   Allmerica Trust Company, N.A. . Allmerica Investments, Inc. . Allmerica 
       Investment Management Company, Inc. . Allerica Asset Management, 
                               Inc. . Allmerica 
 Property & Casualty Companies, Inc. . The Hanover Insurance Company . Sterling 
  Risk Management Serivces, Inc. . Citizens Corporation . Citizens Insurance 
                       Company of America . AMGRO, Inc.

              440 Lincoln Street, Worcester, Massachusetts 01653

                                           [LOGO OF RECYCLED PAPER APPEARS HERE]



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