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                                  UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                   FORM N-CSR

   CERTIFIED SHAREHOLDER REPORT OF REGISTERED MANAGEMENT INVESTMENT COMPANIES

                   Investment Company Act file number 811-1743

                                  Spectra Fund
               (Exact name of registrant as specified in charter)


                    111 Fifth Avenue New York, New York 10003
            (Address of principal executive offices)    (Zip code)


                                 Mr. Hal Liebes

                           Fred Alger Management, Inc.

                                111 Fifth Avenue

                            New York, New York 10003
                     (Name and address of agent for service)

Registrant's telephone number, including area code: 212-806-8800

Date of fiscal year end: October 31

Date of reporting period: October 31, 2005




ITEM 1.    REPORT(S) TO STOCKHOLDERS.

                                  SPECTRA FUND






                                  ANNUAL REPORT
                                OCTOBER 31, 2005

                                     [LOGO]



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Dear Shareholders,                                             December 12, 2005

THE YEAR IN REVIEW

      The past 12 months had more than  their  share of  challenges.  Hurricanes
Katrina and Rita  devastated the southern coast,  leaving  hundreds of thousands
jobless and without  homes,  and prompting  investor fears of high energy prices
(which came true) and  inflation  (which did not).  The war in Iraq  entered its
third year, and the domestic  debate about the war  intensified.  The job market
showed  some  improvement  but job  creation  and wage growth  remained  sub-par
relative to economic  growth and  corporate  profitability.  The  Fed--concerned
about  inflation  and the  frothiness  of the housing  market--raised  overnight
lending rates eight times to 3.75%, the highest level in 4.5 years. In response,
anxious  investors--and  Wall  Street  professionals,   in  particular--remained
skeptical, adopting a wait-and-see attitude.

      Despite such understandable concerns, the U.S. equity markets have emerged
from the bear market of the early 2000s.  In fact,  since October of 2002,  when
the market made a post-bubble low, the major U.S. indices have been very strong.
So has the economy, both domestically and globally. Over the past year, the U.S.
economy  showed steady growth of around 3.5%,  core inflation  excluding  energy
remained  muted at around 2%, and corporate  earnings  stayed in  double-digits,
much to the surprise of most  strategists.  Growth  companies in particular  saw
healthy stock appreciation. Going forward, we see even greater potential for the
better growth managers to outperform their benchmarks and the overall markets.

      Challenges for consumers did not  necessarily  translate into problems for
investors.  High energy  prices  created  investment  opportunities,  and energy
stocks  outperformed all other sectors.  Additionally,  high gas prices prompted
exploration into both alternative sources of energy and innovative  solutions to
reducing fuel consumption.

      The twin effects of productivity and globalization continue to reshape the
competitive landscape for dynamic companies.  Information technologies no longer
attract the same attention,  but their effects on companies are more significant
than ever.  The result is higher  productivity,  which  translates  into  higher
profitability for many corporations.  In addition, more businesses are operating
on a global scale, and U.S.  corporate  profits rose  dramatically  from foreign
sales.  Emerging  economies in Asia,  Latin  America and Eastern  Europe are all
contributing to global  economic  growth,  and China,  both as a consumer of raw
materials  and  finished  goods  and  as  a  producer  of  products  for  global
consumption, shows no signs of diminishing.

      Consumers have also been affected by these trends. In the United States, a
critical mass of consumers adopted high-speed broadband technology. As a result,
the  Internet  has  become  more  fully  integrated  into  day-to-day  life as a
ubiquitous   resource   for   retail,   services,   entertainment,    education,
communication,  and business needs.  This has created  opportunities for dynamic
new business models,  whether it is Google in the on-line search and advertising
space, eBay and auctions, or Apple iPods and downloadable music files.



      In sum,  for the 12 months  ended  October 31,  2005,  the equity  markets
experienced  modest gains with the Dow gaining 6.4%,  the Nasdaq up 8.1% and the
S&P 500 up 8.7%. While long-term Treasury yields were markedly inconsistent with
the Fed's  overnight  interest rate  increases,  the yield on the U.S.  Treasury
10-year note was 4.57% on October 31, 2005, compared to 4.05% a year earlier.

PORTFOLIO MATTERS

      The  Spectra  Fund  gained  18.84% for the fiscal  year,  compared  to the
Russell  3000 Growth  Index which  returned  8.99%.  The Fund's  holdings in the
information  technology sector, at an average weight of 28.11%,  were overweight
compared to the benchmark and significantly  outperformed.  Strong IT performers
included Google Inc., Apple Computer, Inc., whose iPod technologies continued to
show  dominant  sales,  Palm  Inc.,  the  market  leader  in  handheld  computer
solutions,  and Verifone  Holdings Inc., the global leader in secure  electronic
payment technologies.

      Our  holdings in the health care sector were  underweight  compared to the
benchmark,  at an  average  weight  of  17.59%.  Companies  contributing  to our
outperformance  in this sector  included  PacifiCare  Health  Systems,  Inc.,  a
managed care health insurance company, Vertex Pharmaceuticals Incorporated,  and
Caremark Rx, Inc., one of the nation's largest  pharmaceutical firms. During the
year some sector  shifts were made.  We  decreased  our  exposure to biotech and
pharmaceuticals, and increased it in health care providers.

      In the  consumer  staples  sector,  we were  underweight  compared  to the
benchmark,  at an  average  weight of 6.99%.  Here too,  the Fund  significantly
outperformed,  bolstered by performances  from CVS  Corporation,  Gillette,  and
Parlux  Frangrances Inc. During the course of the year we shifted our weightings
in this sector,  decreasing our holdings in internet and catalog retail.  In the
consumer  discretionary  sector,  the  Fund  was  underweight  compared  to  the
benchmark,  at an average weight of 10.35%, and underperformed.  In this sector,
we increased our holdings in personal products throughout the year.

      Energy  stocks  accounted  for an  average  weight of 8.52% of the  Fund's
holdings, an overweight to the benchmark.  Despite strong returns in oil and gas
drilling  companies,  including  National  Oilwell Varco Inc. and  Patterson-UTI
Energy,  Inc., the Fund  underperformed  the  benchmark.  Both the materials and
industrials  sectors were also impacted by rising energy prices and our holdings
in these sectors significantly outperformed the benchmark with contributors like
Peabody Energy Corporation, the world's largest private sector coal company, and
UTi Worldwide, Inc.

LOOKING AHEAD

      At Alger, we look for dynamic,  innovative companies regardless of whether
the stock markets are dominated by bulls or bears. Our long-term  success is not
a  product  of  momentum  or  fads,  but that of a  highly-disciplined  approach
grounded in  fundamental,  bottom-up  research,  and  bolstered  by the thorough
conviction of our analysts.  Looking ahead in 2006, we anticipate a year similar
to 2005, with continued  strong  corporate  earnings,  and an equity market that
increasingly recognizes growth and responds in kind.

                                       2



      As we end another fiscal year,  we'd like to take the opportunity to thank
you for  growing  with us, and  continuing  to  entrust us with your  investment
needs.

      Respectfully submitted,

      /s/ Daniel C. Chung

      Daniel C. Chung
      CHIEF INVESTMENT OFFICER



IMPORTANT PERFORMANCE AND OTHER INFORMATION

      The views of the fund's management and the portfolio holdings described in
this report are as of October 31, 2005;  these views and portfolio  holdings may
have  changed  subsequent  to this  date and they do not  guarantee  the  future
performance  of the  markets or the Fund.  Information  provided  in this report
should not be considered a recommendation to purchase or sell securities.

A WORD ABOUT RISK

      For a more detailed discussion of the risks associated with a Fund, please
see the Fund's Prospectus.

PERFORMANCE

      PERFORMANCE  DATA  QUOTED  IS  HISTORICAL.  PAST  PERFORMANCE  IS  NOT  AN
INDICATION  OR A GUARANTEE OF FUTURE  RESULTS.  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.  CURRENT
PERFORMANCE MAY BE HIGHER OR LOWER THAN THE PERFORMANCE QUOTED.

      Investors  should  consider  the Fund's  investment  objective,  risks and
charges and expenses carefully before investing.  The Fund's prospectus contains
this and other  information  about the Fund,  and may be obtained by asking your
financial   advisor,   calling   (800)   992-5437,   visiting   our  website  at
www.alger.com,  or  contacting  the  Fund's  distributor,  Fred Alger & Company,
Incorporated,  30 Montgomery  Street,  Jersey City,  New Jersey 07302.  Read the
prospectus carefully before investing.

                                       3



                                                         #
- --------------------------------------------------------------------------------
   SPECTRA  FUND  Fund   Highlights   Through   October  31,  2005   (Unaudited)
- --------------------------------------------------------------------------------

- --------------------------------------------------------------------------------
   Hypothetical  $10,000  Investment  in  Class  N  Shares  --  10  years  ended
   October 31, 2005.
- --------------------------------------------------------------------------------

        [The table below represents a line chart in the printed report.]

Spectra Fund
                                Spectra        Russell 3000
11/1/95                          10000            10000        ENDING VALUE
                                 11268            12114        SPECTRA FUND
10/31/97                         14248            15705        CLASS N:
                                 16662            18907        $20,167
10/31/99                         27103            25316
                                 28785            27798
10/31/01                         18366            16861        ENDING VALUE
                                 13832            13532        RUSSELL 3000
10/31/03                         17087            16691        GROWTH INDEX:
                                 16971            17279        $18,832
10/31/05                         20167            18832


The  chart  above  illustrates  the  growth in value of a  hypothetical  $10,000
investment made in Spectra Fund Class N shares and the Russell 3000 Growth Index
for the ten years ended  October 31, 2005.  The figures for Spectra Fund and the
Russell  3000  Growth  Index  (an  unmanaged  index of  common  stocks)  include
reinvestment of dividends. Performance for Spectra Fund Class A shares will vary
from the results shown above due to the sales charge on Class A shares.

- --------------------------------------------------------------------------------
                PERFORMANCE COMPARISON           PERFORMANCE COMPARISON
                as of October 31, 2005           as of October 31, 2005

                AVERAGE ANNUAL RETURNS           AVERAGE ANNUAL RETURNS
                                                                        SINCE
                                                                       INCEPTION
                  1       5      10                        1       5   (JULY 1,
                YEAR    YEARS   YEARS                    YEAR    YEARS    2000)
               -----------------------   ---------------------------------------
Class N        18.84%  (6.87%)  7.27%    Class A+       12.54%  (7.81%)  (9.81)
Russell 3000                             Russell 3000
  Growth Index  8.99%  (7.49%)  6.53%      Growth Index  8.99%  (7.49%)  (6.80%)

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

THE FUND'S  AVERAGE  ANNUAL  TOTAL  RETURNS  INCLUDE  CHANGES IN SHARE PRICE AND
REINVESTMENT  OF DIVIDENDS AND CAPITAL  GAINS.  THE GRAPH AND TABLE ABOVE DO NOT
REFLECT  THE  DEDUCTION  OF TAXES  THAT A  SHAREHOLDER  WOULD  HAVE PAID ON FUND
DISTRIBUTIONS  OR ON THE  REDEMPTION  OF  FUND  SHARES.  INVESTMENT  RETURN  AND
PRINCIPAL WILL FLUCTUATE AND THE FUND'S SHARES, WHEN REDEEMED, MAY BE WORTH MORE
OR LESS THAN THEIR ORIGINAL COST.  PAST  PERFORMANCE  DOES NOT GUARANTEE  FUTURE
RESULTS.

+ Returns reflect maximum initial sales charges on Class A shares.

                                       4



PORTFOLIO SUMMARY+

- --------------------------------------------------------------------------------
                              Value (%)                               Value (%)
- ---------------------------------------  ---------------------------------------
Consumer Discretionary            10.0%  Health Care                      17.3%
Consumer Staples                   7.1   Industrials                       8.4
Energy                            10.7   Information Technology           28.8
Financials                         6.6   Materials                         1.7
                                         Telecommunication Services        5.3
                                         Cash and Net Other Assets         4.1
                                                                         -----
                                                                         100.0%
                                                                         -----
- --------------------------------------------------------------------------------
- ----------
+ Based on net assets.


                                       5



SPECTRA FUND
SCHEDULE OF INVESTMENTS

October 31, 2005

  SHARES     COMMON STOCKS--95.9%                                       VALUE
 ---------                                                            ---------
             AIR FREIGHT & LOGISTICS--1.9%
    43,000   UTI Worldwide, Inc.                                   $  3,678,220
                                                                   ------------
             BIOTECHNOLOGY--1.6%
   169,800   ARIAD Pharmaceuticals, Inc.*                             1,181,808
    82,700   Vertex Pharmaceuticals Incorporated*                     1,881,425
                                                                   ------------
                                                                      3,063,233
                                                                   ------------
             CHEMICALS--1.3%
    58,700   Lubrizol Corporation                                     2,441,332
                                                                   ------------
             COMMUNICATION EQUIPMENT--.9%
    43,400   QUALCOMM Inc.                                            1,725,584
                                                                   ------------
             COMMUNICATION TECHNOLOGY--3.2%
   240,500   Nextel Partners, Inc. Cl. A*                             6,048,575
                                                                   ------------
             COMPUTERS & PERIPHERALS--2.9%
   114,600   EMC Corporation*                                         1,599,816
    80,900   Network Appliance, Inc.*                                 2,213,424
   147,700   Western Digital Corporation*                             1,787,170
                                                                   ------------
                                                                      5,600,410
                                                                   ------------
             COMPUTER TECHNOLOGY--.8%
    37,900   NAVTEQ*                                                  1,482,648
                                                                   ------------
             DIVERSIFIED FINANCIAL SERVICES--3.8%
   160,400   Citigroup Inc.                                           7,343,112
                                                                   ------------
             ELECTRONIC EQUIPMENT & INSTRUMENTS--1.6%
    68,000   Evergreen Solar, Inc.*                                     561,000
    96,215   Multi-Fineline Electronix, Inc.*                         2,561,243
                                                                   ------------
                                                                      3,122,243
                                                                   ------------
             ENERGY EQUIPMENT & SERVICES--4.4%
    91,900   GulfMark Offshore, Inc.*                                 2,622,826
    65,900   National-Oilwell Varco Inc.*                             4,116,773
    31,100   Transocean Inc.*                                         1,787,939
                                                                   ------------
                                                                      8,527,538
                                                                   ------------
             FINANCIAL INFORMATION SERVICES--1.0%
    61,600   Genworth Financial Inc. Cl. A                            1,952,104
                                                                   ------------
             FOOD & STAPLES RETAILING--1.3%
   105,200   CVS Corporation                                          2,567,932
                                                                   ------------
             FREIGHT & LOGISTICS--1.4%
    28,050   FedEx Corp.                                              2,578,637
                                                                   ------------
             HEALTH CARE EQUIPMENT & SUPPLIES--2.2%
    89,600   St. Jude Medical, Inc.*                                  4,307,072
                                                                   ------------
             HEALTH CARE PROVIDERS & SERVICES--6.8%
   109,350   Caremark Rx, Inc.*                                       5,729,940
    87,800   PacifiCare Health Systems, Inc.*                         7,231,208
                                                                   ------------
                                                                     12,961,148
                                                                   ------------

                                       6



SPECTRA FUND
SCHEDULE OF INVESTMENTS (CONTINUED)
October 31, 2005

  SHARES     COMMON STOCKS (CONTINUED)                                 VALUE
 ---------                                                           ---------
             HOTELS, RESTAURANTS & LEISURE--3.2%
    24,000   Carnival Corporation                                  $  1,192,080
    48,700   Fairmont Hotels & Resorts Inc.                           1,584,211
   115,900   Penn National Gaming, Inc.*                              3,424,845
                                                                   ------------
                                                                      6,201,136
                                                                   ------------
             HOUSEHOLD PRODUCTS--4.2%
   144,202   Procter & Gamble Company                                 8,073,870
                                                                   ------------
             INDUSTRIAL CONGLOMERATES--3.4%
   190,600   General Electric Company                                 6,463,246
                                                                   ------------
             INSURANCE--1.7%
    51,200   American International Group, Inc.                       3,317,760
                                                                   ------------
             INTERNET & CATALOG RETAIL--.8%
    36,300   eBay Inc.*                                               1,437,480
                                                                   ------------
             INTERNET SOFTWARE & SERVICES--9.8%
    29,700   Google Inc. Cl. A*                                      11,052,558
    19,400   Netease.com Inc. ADR*#                                   1,479,638
    17,500   TNS Inc.*                                                  307,650
   160,600   Yahoo! Inc.*                                             5,937,382
                                                                   ------------
                                                                     18,777,228
                                                                   ------------
             LEISURE & ENTERTAINMENT--.4%
    30,400   Shanda Interactive Entertainment Ltd. ADR*#                753,008
                                                                   ------------
             MACHINERY--1.4%
    40,900   Caterpillar Inc.                                         2,150,931
    13,100   Terex Corporation*                                         720,107
                                                                   ------------
                                                                      2,871,038
                                                                   ------------
             MACHINERY--OIL WELL EQUIPMENT & SERVICES--1.5%
    82,800   Patterson-UTI Energy, Inc.                               2,825,964
                                                                   ------------
             MEDIA--4.1%
    79,300   Disney (Walt) Company                                    1,932,541
    80,200   Time Warner Inc.                                         1,429,966
   143,200   Viacom Inc. Cl. B                                        4,434,904
                                                                   ------------
                                                                      7,797,411
                                                                   ------------
             MEDICAL INSTRUMENTS AND SUPPLIES--.5%
    42,100   Symmetry Medical Inc.*                                     932,094
                                                                   ------------
             MEDICAL TECHNOLOGY--1.1%
    59,100   Syneron Medical Ltd.*                                    2,124,054
                                                                   ------------
             METALS & MINING--4.5%
    46,300   Alpha Natural Resources, Inc.*                           1,099,625
    84,300   Peabody Energy Corporation                               6,588,888
     7,400   Phelps Dodge Corporation                                   891,478
                                                                   ------------
                                                                      8,579,991
                                                                   ------------
             OIL AND GAS EXPLORATION SERVICES--.7%
   211,700   Petrobank Energy and Resources Ltd.*                     1,422,624
                                                                   ------------
             PERSONAL PRODUCTS--.5%
    36,400   Avon Products, Inc.                                        982,436
                                                                   ------------

                                       7



SPECTRA FUND
SCHEDULE OF INVESTMENTS (CONTINUED)
October 31, 2005

  SHARES     COMMON STOCKS (CONTINUED)                                 VALUE
 ---------                                                           ---------
             PHARMACEUTICALS--5.1%
    87,900   Johnson & Johnson                                     $  5,504,298
   210,400   Schering-Plough Corporation                              4,279,536
                                                                   ------------
                                                                      9,783,834
                                                                   ------------
             SEMICONDUCTORS & SEMICONDUCTOR
               EQUIPMENT--6.6%
    53,400   Advanced Micro Devices, Inc.*                            1,239,948
   154,100   Marvell Technology Group Ltd.*                           7,151,781
   350,700   Silicon Storage Technology Inc.*                         1,771,035
    84,435   Tessera Technologies Inc.*                               2,355,737
     3,400   Trident Microsystems, Inc.*                                102,884
                                                                   ------------
                                                                     12,621,385
                                                                   ------------
             SOFTWARE--6.1%
   268,900   Microsoft Corporation                                    6,910,730
   203,100   Verifone Holdings Inc.*                                  4,711,920
                                                                   ------------
                                                                     11,622,650
                                                                   ------------
             SPECIALTY RETAIL--1.2%
    43,400   Abercrombie & Fitch Co. Cl. A                            2,256,366
                                                                   ------------
             TEXTILES, APPAREL & LUXURY GOODS--.8%
    29,500   Polo Ralph Lauren Corporation Cl. A                      1,451,400
                                                                   ------------
             TOBACCO--1.0%
    26,500   Altria Group, Inc.                                       1,988,825
                                                                   ------------
             WIRELESS TELECOMMUNICATION SERVICES--2.2%
    35,600   America Movil S.A. de C.V. ADR Series L#                   934,500
    38,800   NII Holdings Inc. Cl. B*                                 3,217,296
                                                                   ------------
                                                                      4,151,796
                                                                   ------------
             Total Common Stocks
               (Cost $171,370,815)                                  183,835,384
                                                                   ------------
             WARRANTS
             COMMUNICATION EQUIPMENT
    29,422   Lucent Technologies Inc., 12/10/07
               (Cost $0)                                                 20,301
                                                                   ------------
 PRINCIPAL
  AMOUNT
 ---------

             SHORT-TERM INVESTMENTS--4.6%
             U.S. AGENCY OBLIGATIONS
$8,783,000   Federal National Mortgage Association, 3.62%, 11/1/05
                (Cost $8,783,000)                                     8,783,000
                                                                   ------------
Total Investments
  (Cost $180,153,815) (a)                                100.5%     192,638,685
Liabilities in Excess of Other Assets                     (0.5)      (1,017,213)
                                                         -----     ------------

Net Assets                                               100.0%    $191,621,472
                                                         =====     ============

- ----------
*   Non-income producing security.

#   American Depositary Receipts.

(a) At October 31, 2005, the net unrealized appreciation on investments,  based
    on  cost  for  federal  income tax  purposes  of  $180,361,034  amounted  to
    $12,277,651  which consisted of aggregate gross  unrealized  appreciation of
    $16,922,467 and aggregate gross unrealized depreciation of $4,644,816.

                       See Notes to Financial Statements.

                                       8



SPECTRA FUND
STATEMENT OF ASSETS AND LIABILITIES
October 31, 2005



ASSETS:
                                                                       
   Investments in securities, at value (cost $180,153,815)--
     see accompanying schedule of investments ..................             $ 192,638,685
   Cash ........................................................                     1,352
   Receivable for investment securities sold ...................                 3,014,964
   Receivable for shares of beneficial interest sold ...........                   186,075
   Dividends receivable ........................................                    60,480
   Prepaid expenses ............................................                    18,163
                                                                             -------------
       Total Assets ............................................               195,919,719
LIABILITIES:
   Payable for investment securities purchased .................  $3,704,594
   Payable for shares of beneficial interest redeemed ..........     122,617
   Investment advisory fees payable ............................     241,501
   Shareholder servicing fees payable ..........................      40,250
   Transfer agent fees payable .................................      56,686
   Trustees' fees payable ......................................       6,637
   Accrued expenses ............................................     125,962
                                                                  ----------
       Total Liabilities .......................................                 4,298,247
                                                                             -------------
NET ASSETS .....................................................             $ 191,621,472
                                                                             =============
NET ASSETS CONSIST OF:
   Paid-in capital .............................................             $ 435,094,448
   Undistributed net investment income (accumulated loss) ......                        --
   Undistributed net realized gain (accumulated loss) ..........              (255,957,846)
   Net unrealized appreciation (depreciation) of investments ...                12,484,870
                                                                             -------------
NET ASSETS .....................................................             $ 191,621,472
                                                                             =============

Class A

   Net Asset Value Per Share ...................................             $        6.96
                                                                             =============
   Offering Price Per Share ....................................             $        7.35
                                                                             =============

Class N

   Net Asset Value and Offering Price Per Share ................             $        6.94
                                                                             =============

Shares of beneficial interest outstanding--Note 5

   Class A .....................................................                   585,811
                                                                             =============
   Class N .....................................................                27,026,583
                                                                             =============


                       See Notes to Financial Statements.

                                       9



SPECTRA FUND
STATEMENT OF OPERATIONS
For the year ended October 31, 2005

INVESTMENT INCOME:
   Income:
     Dividends (net of foreign withholding
       taxes of $925) ... ..........................               $  2,318,198
     Interest ......................................                    236,226
                                                                   ------------
       Total Income ................................                  2,554,424
   Expenses:
     Investment advisory fees--Note 2(a) ...........  $ 3,029,513
     Shareholder servicing fees--Note 2(f) .........      504,919
     Printing and postage ..........................      150,790
     Transfer agent fees ...........................      285,657
     Interest expense ..............................        2,990
     Custodian fees ................................       30,825
     Registration fees .............................       17,600
     Trustees' fees ................................       41,951
     Professional fees .............................       56,000
     Miscellaneous .................................       70,292
                                                      -----------
       Total Expenses ..............................                  4,190,537
                                                                   ------------
NET INVESTMENT LOSS ................................                 (1,636,113)
REALIZED AND UNREALIZED GAIN (LOSS)
  ON INVESTMENTS AND OPTIONS:
Net realized gain on investments ...................   44,854,538
Net realized gain on options .......................       (1,089)
Net change in unrealized appreciation
  (depreciation) on investments ....................   (7,528,642)
                                                      -----------
       Net realized and unrealized gain on
          investments and options ..................                 37,324,807
                                                                   ------------
NET INCREASE IN NET ASSETS RESULTING
   FROM OPERATIONS .................................               $ 35,688,694
                                                                   ============

                       See Notes to Financial Statements.

                                       10



SPECTRA FUND
STATEMENTS OF CHANGES IN NET ASSETS

                                                    YEAR ENDED       YEAR ENDED
                                                    OCTOBER 31,     OCTOBER 31,
                                                       2005             2004
                                                   ------------    ------------
Net investment loss ............................   $ (1,636,113)   $ (4,058,447)
Net realized gain on investments and options ...     44,853,449      18,386,855
Net change in unrealized appreciation
  (depreciation) on investments ................     (7,528,642)    (15,856,220)
                                                   ------------    ------------
    Net increase (decrease) in net assets
       resulting from operations ...............     35,688,694      (1,527,812)
Decrease from shares of beneficial interest
    transactions:
  Class A ......................................     (1,577,132)     (1,438,077)
  Class N ......................................    (57,811,000)    (45,395,289)
                                                   ------------    ------------
Net decrease from shares of beneficial
   interest transactions--Note 5a ..............    (59,388,132)    (46,833,366)
                                                   ------------    ------------
      Total decrease in net assets .............    (23,699,438)    (48,361,178)
Net assets:

  Beginning of year ............................    215,320,910     263,682,088
                                                   ------------    ------------
  End of year ..................................   $191,621,472    $215,320,910
                                                   ============    ============

                       See Notes to Financial Statements.

                                       11



SPECTRA FUND
FINANCIAL HIGHLIGHTS
FOR A SHARE OUTSTANDING
THROUGHOUT THE YEAR

                                     INCOME FROM
                                INVESTMENT OPERATIONS
                               ------------------------
                                               NET
                                            REALIZED               DISTRIBUTIONS
                    NET ASSET            AND UNREALIZED    TOTAL       FROM
                     VALUE,       NET      GAIN (LOSS)     FROM         NET
                    BEGINNING  INVESTMENT      ON       INVESTMENT   REALIZED
                     OF YEAR     LOSS(I)   INVESTMENTS  OPERATIONS     GAINS
                    ------------------------------------------------------------
SPECTRA FUND
CLASS A

Year ended 10/31/05   $ 5.86    $(0.05)      $ 1.15       $ 1.10      $ --
Year ended 10/31/04     5.90     (0.10)        0.06        (0.04)       --
Year ended 10/31/03     4.76     (0.08)        1.22         1.14        --
Year ended 10/31/02     6.32     (0.09)       (1.47)       (1.56)       --
Year ended 10/31/01    10.63     (0.08)       (3.60)       (3.68)     (0.63)

CLASS N
Year ended 10/31/05   $ 5.84    $(0.05)      $ 1.15       $ 1.10      $ --
Year ended 10/31/04     5.88     (0.10)        0.06        (0.04)       --
Year ended 10/31/03     4.76     (0.07)        1.19         1.12        --
Year ended 10/31/02     6.32     (0.09)       (1.47)       (1.56)       --
Year ended 10/31/01    10.63     (0.08)       (3.60)       (3.68)     (0.63)

- ----------

(i)  Amount was computed based on average shares outstanding during the year.

(ii) Does not reflect the effect of any sales charge.


                       See Notes to Financial Statements.

                                       12





                                         RATIOS/SUPPLEMENTAL DATA
                    -----------------------------------------------------------------------

                                           NET ASSETS,              RATIO OF NET
                                             END OF      RATIO OF    INVESTMENT
                      NET ASSET               YEAR       EXPENSES       LOSS      PORTFOLIO
                     VALUE, END    TOTAL     (000'S     TO AVERAGE   TO AVERAGE   TURNOVER
                       OF YEAR     RETURN   OMITTED)    NET ASSETS   NET ASSETS     RATE
                    ------------------------------------------- ---------------------------

SPECTRA FUND
CLASS A
                                                                 
Year ended 10/31/05   $ 6.96     18.77%(ii)  $  4,079      2.07%       (0.78)%     247.72%
Year ended 10/31/04     5.86     (0.68)(ii)     4,882      1.98        (1.63)      159.35
Year ended 10/31/03     5.90      23.95(ii)     6,346      2.01        (1.35)      192.19
Year ended 10/31/02     4.76    (24.68)(ii)     6,722      1.98        (1.52)      172.25
Year ended 10/31/01     6.32    (36.20)(ii)    12,951      1.88        (1.03)      114.75

CLASS N
Year ended 10/31/05   $ 6.94     18.84%      $187,542      2.07%       (0.81)%     247.72%
Year ended 10/31/04     5.84     (0.68)       210,439      1.98        (1.63)      159.35
Year ended 10/31/03     5.88     23.53        257,337      2.03        (1.39)      192.19
Year ended 10/31/02     4.76    (24.68)       252,620      1.98        (1.52)      172.25
Year ended 10/31/01     6.32    (36.20)       423,860      1.88        (0.99)      114.75


                                       13



SPECTRA FUND
NOTES TO FINANCIAL STATEMENTS

NOTE 1--SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES:

      Spectra Fund (the "Fund") is a diversified open-end registered  investment
company  organized  as a business  trust under the laws of the  Commonwealth  of
Massachusetts. The Fund's investment objective is capital appreciation. It seeks
to achieve its objective by investing primarily in equity securities.

      The Fund  offers  Class A and Class N shares.  Class A shares  were  first
offered on July 1, 2000 and are  generally  subject to an initial  sales charge.
Class  Nshares are offered only to Class  Nshareholders  of record as of January
21, 2005. Each class has identical rights to assets and earnings.

      The following is a summary of significant accounting policies consistently
followed by the Fund in the preparation of its financial statements.

(A)   INVESTMENT  VALUATION--Investments  in securities  are valued each day the
New  York  Stock  Exchange  (the  "NYSE")  is open as of the  close  of the NYSE
(normally 4:00 p.m. Eastern time).  Listed securities for which such information
is  regularly  reported are valued at the last  reported  sales price or, in the
absence of reported  sales,  at the mean between the bid and asked price,  or in
the absence of a recent bid or asked price,  the equivalent as obtained from one
or more of the major market makers for the  securities to be valued.  Short-term
notes are valued at amortized cost which  approximates  market value.  Shares of
mutual  funds are valued at the net asset value of the  underlying  mutual fund.
Securities  included  within  the  Nasdaq  market  shall be valued at the Nasdaq
official closing price ("NOCP") on the day of valuation,  or if there is no NOCP
issued,  at the last sale  price on such day.  Securities  included  within  the
Nasdaq  market  for which  there is no NOCP and no last sale price on the day of
valuation  shall be valued at the mean  between the last bid and asked prices on
such day.

(B)   SECURITIES TRANSACTIONS AND INVESTMENT INCOME--Securities transactions are
recorded  on a trade  date  basis.  Realized  gains and losses  from  securities
transactions  are  recorded  on the  basis of the  first-in,  first-out  method.
Dividend  income is recognized on the  ex-dividend  date and interest  income is
recognized on the accrual basis.

(C)   REPURCHASE  AGREEMENTS--The  Fund enters into  repurchase  agreements with
approved  institutions.  The repurchase  agreements are  collateralized  by U.S.
Government securities, which are either received and held in physical possession
by the custodian or received by such  custodian in  book-entry  form through the
Federal  Reserve  book-entry  system.  The collateral is valued on a daily basis
during the term of the  agreement to ensure that its value equals or exceeds the
agreed-upon  repurchase price to be repaid to the Fund. Additional collateral is
obtained when necessary.

(E)   LENDING  OF  PORTFOLIO   SECURITIES--The  Fund  lends  its  securities  to
financial institutions,  provided that the market value of the securities loaned
will not at any time

                                       14



SPECTRA FUND
NOTES TO FINANCIAL STATEMENTS (CONTINUED)

exceed one third of the Fund's total assets, as defined. The Fund earns fees on
the securities loaned. In order to protect against the risk of failure by the
borrower to return the securities loaned or any delay in the delivery of such
securities, the loan is collateralized by cash, letters of credit or U.S.
Government securities that are maintained in an amount equal to at least 100
percent of the current market value of the loaned securities. The market value
of the loaned securities is determined at the close of business of the Fund and
any required additional collateral is delivered to the Fund on the next business
day. As of October 31, 2005, there were no securities on loan.

(F)   DIVIDENDS  TO   SHAREHOLDERS--Dividends   and  distributions   payable  to
shareholders  are recorded by the Fund on the ex-dividend  date.  Dividends from
net investment income and distributions from net realized gains are declared and
paid annually after the end of the fiscal year in which earned.

      Each class is treated  separately in determining  the amounts of dividends
from net  investment  income and  distributions  from capital  gains  payable to
holders of its shares.

      The  characterization  of  distributions  to  shareholders  for  financial
reporting  purposes is determined in accordance  with federal  income tax rules.
Therefore,  the  source  of  the  Fund's  distributions  may  be  shown  in  the
accompanying financial statements as either from, or in excess of net investment
income,  net  realized  gain on  investment  transactions  or return of capital,
depending on the type of book/tax  differences that may exist.  Capital accounts
within the financial statements are adjusted for permanent book/tax differences.
Reclassifications  result  primarily from the difference in tax treatment of net
operating losses. The  reclassification  had no impact on the net asset value of
the Fund and is designed to present the Fund's capital accounts on a tax basis.

(G)   FEDERAL  INCOME  TAXES--It  is  the  Fund's  policy  to  comply  with  the
requirements  of the Internal  Revenue Code  applicable to regulated  investment
companies and to distribute all of its investment  company taxable income to its
shareholders. Provided the Fund maintains such compliance, no federal income tax
provision is required.  (H) ALLOCATION  METHOD--Income,  realized and unrealized
gains and losses,  and expenses are allocated  among the Fund's classes based on
relative net assets.

(I)   INDEMNIFICATION--The  Fund enters into contracts that contain a variety of
indemnification provisions. The Fund's maximum exposure under these arrangements
is unknown.  The Fund does not anticipate  recognizing any loss related to these
arrangements.

(J)   OTHER--These  financial  statements have been prepared using estimates and
assumptions that affect the reported amounts therein.  Actual results may differ
from those estimates.

                                       15



SPECTRA FUND
NOTES TO FINANCIAL STATEMENTS (CONTINUED)

NOTE 2--INVESTMENT ADVISORY FEES AND OTHER TRANSACTIONS WITH AFFILIATES:

(A)   INVESTMENT ADVISORY FEES--The Fund pays its investment adviser, Fred Alger
Management, Inc. ("Alger Management"),  a monthly fee at an annual rate of 1.50%
based on the value of the Fund's  average daily net assets.  (B) TRANSFER  AGENT
FEES--Alger Shareholder Services, Inc. ("Alger Services"), an affiliate of Alger
Management, served as transfer agent for the Fund. During the year ended October
31, 2005, the Fund incurred fees of approximately  $9,570 for services  provided
by Alger  Services.  Effective  November 22,  2004,  State Street Bank and Trust
Company  replaced Alger Services as the Fund's  transfer  agent.  Transfer agent
services are provided by State Street Bank and Trust Company's affiliate, Boston
Financial Data Services, Inc. ("BFDS").

      Effective  February  28,  2005,  the Fund has entered  into a  shareholder
administrative  services  agreement  with Alger  Services  to  compensate  Alger
Services on a per account basis for its liaison and administrative  oversight of
BFDS and related  services.  During the year ended  October 31,  2005,  the Fund
incurred fees of $31,552 for these services provided by Alger Services.

(C)   SALES  CHARGES--Purchases  of Class A shares of the Fund may be subject to
initial sales  charges.  For the year ended October 31, 2005,  the initial sales
charges retained by Fred Alger &Company (the "Distributor"),  were approximately
$1,801. Sales charges do not represent expenses of the Fund.

(D)   BROKERAGE  COMMISSIONS--During  the year ended October 31, 2005,  the Fund
paid Fred Alger & Company,  Incorporated  ("Alger Inc."),  an affiliate of Alger
Management, $640,343 in connection with securities transactions.

(E)   TRUSTEES'  FEES--Certain  trustees and officers of the Fund are  directors
and officers of Alger Management,  Alger Inc. and Alger Services.  The Fund pays
each trustee who is not  affiliated  with Alger  Management or its affiliates an
annual fee of $8,000.

(F)   SHAREHOLDER  SERVICING  FEES--The  Fund  has  entered  into a  shareholder
servicing  agreement with Alger Inc.  whereby Alger Inc.  provides the Fund with
ongoing  servicing of shareholder  accounts.  As compensation for such services,
the Fund pays Alger Inc.  a monthly  fee at an annual  rate equal to .25% of the
value of the Fund's average daily net assets.

(G)   OTHER TRANSACTIONS WITH  AFFILIATES--Certain  trustees and officers of the
Fund are directors and officers of Alger  Management,  the Distributor and Alger
Services.

                                       16



SPECTRA FUND
NOTES TO FINANCIAL STATEMENTS (CONTINUED)

NOTE 3--SECURITIES TRANSACTIONS:

During  the year ended  October  31,  2005,  purchases  and sales of  investment
securities,   excluding  short-term  securities,   aggregated  $476,030,579  and
$533,610,555, respectively.

NOTE 4--LINES OF CREDIT:

      The Fund has a committed line of credit with a bank.  All borrowings  have
variable  interest  rates and are  payable  on  demand.  To the  extent the Fund
borrows under these lines, the Fund must pledge securities with a total value of
at least twice the amount  borrowed.  For the year ended  October 31, 2005,  the
Fund had borrowings which averaged  $105,452 at a weighted average interest rate
of 2.84%.

      Written call and put option  activity for the year ended  October 31, 2005
was as follows:

                                                      NUMBER OF       PREMIUMS
                                                      CONTRACTS       RECEIVED
                                                      ---------      ----------
Options outstanding at October 31, 2004                     --               --
Options written                                            240        $ 207,471
Options closed or expired                                 (240)        (207,471)
Options exercised                                           --               --
                                                       -------        ---------
Options outstanding at October 31, 2005                     --        $      --
                                                       =======        =========

NOTE 5--SHARE CAPITAL:

(A)   The Fund has an  unlimited  number  of  authorized  shares  of  beneficial
interest  of $.001  par value  which are  presently  divided  into two  separate
classes.

      During  the year  ended  October  31,  2005,  transactions  of  shares  of
beneficial interest were as follows:

CLASS A:                                              SHARES          AMOUNT
                                                   ------------    ------------
Shares sold ....................................         34,531    $    228,971
Shares redeemed ................................       (282,454)     (1,806,103)
                                                   ------------    ------------
Net decrease ...................................       (247,923)   $ (1,577,132)
                                                   ============    ============

CLASS N:                                              SHARES          AMOUNT
                                                   ------------    ------------
Shares sold ....................................      1,103,111    $  7,028,549
Shares redeemed ................................    (10,137,002)    (64,839,549)
                                                   ------------    ------------
Net decrease ...................................     (9,033,891)   $(57,811,000)
                                                   ============    ============

                                       17



SPECTRA FUND
NOTES TO FINANCIAL STATEMENTS (CONTINUED)

      During  the year  ended  October  31,  2004,  transactions  of  shares  of
beneficial interest were as follows:

CLASS A:                                              SHARES          AMOUNT
                                                   ------------    ------------
Shares sold ....................................         57,059    $    343,940
Shares redeemed ................................       (298,614)     (1,782,017)
                                                   ------------    ------------
Net decrease ...................................       (241,555)   $ (1,438,077)
                                                   ============    ============

CLASS N:                                              SHARES          AMOUNT
                                                   ------------    ------------
Shares sold ....................................      3,864,237    $ 23,379,536
Shares redeemed ................................    (11,553,622)    (68,774,825)
                                                   ------------    ------------
Net decrease ...................................     (7,689,385)   $(45,395,289)
                                                   ============    ============

(B)   REDEMPTION  FEE--The Fund may impose a 2.00% redemption fee on Fund shares
redeemed  (including  shares  redeemed  by  exchange)  within 30 days after such
shares were  acquired.  The fees  retained  by the Fund are  included as paid-in
capital  on the  Statement  of Assets  and  Liabilities.  During  the year ended
October 31, 2005 and the year ended October 31, 2004,  redemption fees were $426
and $431 respectively.

NOTE 6--DISTRIBUTIONS TO SHAREHOLDERS:

      During the year ended  October  31,  2005 and the year ended  October  31,
2004, there were no  distributions  paid. As of October 31, 2005, the components
of distributable earnings on a tax basis were as follows:

Undistributed ordinary capital ....................................           --
Undistributed long-term gain ......................................           --
Unrealized appreciation ...........................................  $12,277,651

      The differences  between book basis and tax basis unrealized  appreciation
is attributable primarily to the tax deferral of losses on wash sales.

      At October 31,  2005,  the Fund,  for  federal  income tax  purposes,  had
capital loss  carryforwards  which expire as set forth in the table below. These
amounts may be applied  against  future net realized  gains until the earlier of
their utilization or expiration.

EXPIRATION DATE                                                        AMOUNT
- ---------------                                                     ------------
      2009                                                          $148,683,326
      2010                                                           107,067,302
                                                                    ------------
                                                                    $255,750,628
                                                                    ============
NOTE 7--LITIGATION

Alger Management has responded to inquiries,  document requests and/or subpoenas
from regulatory authorities, including the United States Securities and Exchange
Commission  ("SEC"),  the Office of the New York  State  Attorney  General,  the
Attorney General of New Jersey, and the West Virginia  Securities

                                       18



SPECTRA FUND
NOTES TO FINANCIAL STATEMENTS (CONTINUED)

Commissioner, in connection with their investigations of practices in the mutual
fund industry identified as "market timing" and "late trading."

On December  16, 2005,  Alger  Management  received  from the staff of the SEC a
"Wells  Notice" which  indicated  that the staff  intends to recommend  that the
Commission bring civil enforcement action for possible violations of the federal
securities  laws.  "Wells  Notices"  also have been  sent to  certain  companies
affiliated with Alger Management,  as well as certain present and former members
of its senior management. The Wells Notices arose out of the SEC's staff ongoing
investigation  of market  timing and late  trading  practices in the mutual fund
industry.  Alger  Management and the other  recipients  have the  opportunity to
respond  to the staff  before  the staff  makes a formal  recommendation.  Alger
Management  plans to send a Wells  submission  to the staff in January  2006. On
August  31,  2005,  the West  Virginia  Securities  Commissioner  in an ex parte
Summary Order to Cease and Desist and Notice of Right to Hearing  concluded that
Alger  Management  and  Alger  Inc.  had  violated  the  West  Virginia  Uniform
Securities Act, and ordered Alger  Management and Alger Inc. to cease and desist
from  further  violations  of the Act by engaging in the  market-timing  related
conduct  described  in the order.  The ex parte order  provided  notice of their
right to a  hearing  with  respect  to the  violations  of law  asserted  by the
Commissioner.  Other firms  unaffiliated  with Alger Management were served with
similar orders.  Alger Management and Alger Inc. intend to request a hearing for
the purpose of seeking to vacate or modify the order.

In addition,  in 2003 and 2004 several  purported  class actions and shareholder
derivative suits were filed against various parties in the mutual fund industry,
including  Alger  Management,  certain mutual funds managed by Alger  Management
(the "Alger  Mutual  Funds"),  and certain  current and former Alger Mutual Fund
trustees and officers,  alleging  wrongful conduct related to market-timing  and
late-trading by mutual fund  shareholders.  These cases were  transferred to the
U.S.  District  Court  of  Maryland  by  the  Judicial  Panel  on  Multidistrict
Litigation  for   consolidated   pre-trial   proceedings.   In  September  2004,
consolidated  amended  complaints  involving  these cases (not yet including the
West Virginia action) -- a Consolidated  Amended Fund Derivative  Complaint (the
"Derivative  Complaint") and two substantially  identical  Consolidated  Amended
Class Action Complaints  (together,  the "Class Action Complaint") -- were filed
in the Maryland  federal  district court under the caption number  1:04-MD-15863
(JFM). In April 2005, a civil lawsuit involving similar allegations was filed by
the West Virginia Attorney General and also transferred to the Maryland District
Court.

The  Derivative  Complaint  alleged (i)  violations,  by Alger  Management  and,
depending on the specific offense alleged, by its immediate parent,  Alger Inc.,
which is the  Distributor  of the Alger  Mutual  Funds,  and/or the fund trustee
defendants,  of Sections 36(a),  36(b), 47, and 48 of the Investment Company Act
of 1940  (the  "Investment  Company  Act")  and of  Sections  206 and 215 of the

                                       19



SPECTRA FUND
NOTES TO FINANCIAL STATEMENTS (CONTINUED)

Investment  Advisers  Act of 1940,  breach  of  fiduciary  duty,  and  breach of
contract,  (ii)  various  offenses by other  third-party  defendants,  and (iii)
unjust  enrichment  by all the  named  defendants.  The Class  Action  Complaint
alleged,  in addition to the offenses  listed above,  (i)  violations,  by Alger
Management, Alger Inc., their affiliates, the funds named as defendants, and the
current and former fund trustees and officers, of Sections 11, 12(a)(2),  and 15
of the Securities Act of 1933,  Sections 10(b) (and Rule 10b-5  thereunder)  and
20(a) of the Securities Exchange Act of 1934 (the "1934 Act"), and Section 34(b)
of the  Investment  Company  Act of 1940,  (ii)  breach of contract by the funds
named as defendants,  and (iii) unjust  enrichment of the  defendants.  The West
Virginia  attorney  general action also alleges  violations of the West Virginia
Consumer Credit and Protection Act and other wrongful conduct.

Motions to dismiss the Class Action Complaint and the Derivative  Complaint were
subsequently  filed.  On November 3, 2005,  the district  court  dismissed  both
complaints  in their  entirety  with  respect  to the  Alger  Mutual  Funds  and
dismissed all claims  against the other Alger  defendants  other than the claims
under the 1934 Act and Section 36(b) of the  Investment  Company Act, with leave
to the  class  action  plaintiffs  to  file  amended  complaints  against  those
defendants with respect to claims under state law. It is anticipated that orders
implementing  the rulings  will be entered in or about  January  2006,  and that
motions for reconsideration  will thereafter be filed.

Alger  Management  does not believe that the Alger  Mutual Funds are  themselves
targets of the regulatory investigations as potential enforcement defendants.

The SEC and,  in some  cases,  state  government  authorities  have a variety of
administrative  and  civil  enforcement  powers,  including  injunctive  powers,
authority  to assess fines and  penalties  and order  restitution,  authority to
limit the activities of a person or company and other enforcement  powers,  that
may be exercised administratively or through the courts.

Under  Section  9(a)  of the  Investment  Company  Act,  if  any of the  various
regulatory  proceedings or lawsuits were to result in a court injunction against
Alger  Management  or Alger  Inc.,  Alger  Management  would,  in the absence of
exemptive  relief  granted by the SEC,  be barred  from  serving  as  investment
adviser/sub-adviser  for any registered investment company,  including the Fund.
While  exemptive  relief from  Section  9(a) has been  granted in certain  other
cases,  there is no  assurance  that such  exemptive  relief would be granted if
sought. In addition, it is possible that these matters and/or other developments
resulting from these matters could result in loss of Alger Management personnel,
diversion of time and attention of Alger Management  personnel,  diminishment of
financial  resources  of Alger  Management,  or other  consequences  potentially
adverse to the Fund.  Alger  Management  cannot predict the potential  effect of
such actions upon Alger  Management or the Fund.  There can be no assurance that
the effect, if any, would not be material.

                                       20



             REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the Shareholders and Board of Trustees of
  Spectra Fund:

We have audited the accompanying  statement of assets and liabilities of Spectra
Fund (the  "Fund"),  including  the schedule of  investments,  as of October 31,
2005,  and the related  statement  of  operations  for the year then ended,  the
statements of changes in net assets for each of the two years in the period then
ended,  and the  financial  highlights  for each of the four years in the period
then  ended.  These  financial  statements  and  financial  highlights  are  the
responsibility  of the Fund's  management.  Our  responsibility is to express an
opinion on these  financial  statements  and financial  highlights  based on our
audits.  The  financial  highlights  for the year ended  October  31,  2001 were
audited by other auditors,  whose report,  dated November 30, 2001, expressed an
unqualified opinion on those financial highlights.

We conducted our audits in accordance  with the standards of the Public  Company
Accounting Oversight Board (United States). Those standards require that we plan
and perform the audit to obtain reasonable assurance about whether the financial
statements and financial highlights are free of material  misstatement.  We were
not engaged to perform an audit of the Fund's  internal  control over  financial
reporting.  Our audits included consideration of internal control over financial
reporting as a basis for designing audit  procedures that are appropriate in the
circumstances,  but  not  for  the  purpose  of  expressing  an  opinion  on the
effectiveness  of  the  Fund's  internal   control  over  financial   reporting.
Accordingly,  we express no such opinion. An audit also includes examining, on a
test basis,  evidence  supporting  the amounts and  disclosures in the financial
statements and financial  highlights,  assessing the accounting  principles used
and  significant  estimates  made by  management,  and  evaluating  the  overall
financial  statement  presentation.  Our  procedures  included  confirmation  of
securities owned as of October 31, 2005, by  correspondence  with custodians and
brokers. We believe that our audits provide a reasonable basis for our opinion.

In our opinion,  the financial  statements and financial  highlights referred to
above,  and  audited  by us,  present  fairly,  in all  material  respects,  the
financial  position  of Spectra  Fund at October  31,  2005,  the results of its
operations  for the year then  ended,  the changes in its net assets for each of
the two years in the period then ended, and the financial highlights for each of
the four years in the period  then  ended,  in  conformity  with U.S.  generally
accepted accounting principles.


                                            /s/ Ernst & Young LLP

December 12, 2005

                                       21



SPECTRA FUND
ADDITIONAL INFORMATION (UNAUDITED)

SHAREHOLDER EXPENSE EXAMPLE

      As a shareholder  of the Fund,  you incur two types of costs:  transaction
costs, if applicable,  including sales charges (loads) and redemption  fees; and
ongoing  costs,  including  management  fees,   distribution  (12b-1)  fees,  if
applicable,  and other  fund  expenses.  This  example is  intended  to help you
understand  your  ongoing  costs (in  dollars) of  investing  in the Fund and to
compare these costs with the ongoing costs of investing in other mutual funds.

     The  example  below is based on an  investment  of $1,000  invested  at the
beginning of the six-month  period  starting May 1, 2005 and ending  October 31,
2005.

ACTUAL EXPENSES

      The  first  line for each  class of shares  in the  table  below  provides
information  about actual  account values and actual  expenses.  You may use the
information in this line, together with the amount you invested, to estimate the
expenses  that you would have paid over the period.  Simply  divide your account
value by $1,000 (for example,  an $8,600 account value divided by $1,000 = 8.6),
then  multiply  the result by the  number in the first  line  under the  heading
entitled  "Expenses Paid During the Period" to estimate the expenses you paid on
your account during this period.

HYPOTHETICAL EXAMPLE FOR COMPARISON PURPOSES

      The  second  line for each  class of shares in the  table  below  provides
information about hypothetical account values and hypothetical expenses based on
the Fund's actual expense ratios for each class of shares and an assumed rate of
return of 5% per year before  expenses,  which is not the Fund's actual  return.
The  hypothetical  account  values and  expenses may not be used to estimate the
actual ending account  balance or expenses you paid for the period.  You may use
this information to compare the ongoing costs of investing in the Fund and other
funds. To do so, compare this 5%  hypothetical  example with the 5% hypothetical
examples that appear in the shareholder reports of other funds.

      Please note that the  expenses  shown in the table are meant to  highlight
your ongoing costs only and do not reflect any transaction  costs, such as sales
charges (loads) and redemption fees. Therefore, the second line under each class
of shares in the table is useful in comparing  ongoing costs only,  and will not
help you  determine  the  relative  total costs of owning  different  funds.  In
addition, if these transactional costs were included, your costs would have been
higher.

                                                              EXPENSES PAID
                            BEGINNING          ENDING        DURING THE PERIOD
                          ACCOUNT VALUE    ACCOUNT VALUE       MAY 1, 2005 TO
CLASS A:                   MAY 1, 2005    OCTOBER 31, 2005   OCTOBER 31, 2005(B)
                          -------------   ----------------   ------------------
Actual                      $1,000.00        $1,154.20             $11.24
Hypothetical(a)              1,000.00         1,014.77              10.51


                                                              EXPENSES PAID
                            BEGINNING          ENDING        DURING THE PERIOD
                          ACCOUNT VALUE    ACCOUNT VALUE       MAY 1, 2005 TO
CLASS N:                   MAY 1, 2005    OCTOBER 31, 2005   OCTOBER 31, 2005(B)
                          -------------   ----------------   ------------------
Actual                      $1,000.00        $1,154.70             $11.24
Hypothetical(a)              1,000.00         1,014.77              10.51

- ----------
(a)  5% annual return before expenses.

(b)  Expenses are equal to the Fund's annualized expense ratio of 2.07% for both
     Class A and Class N shares,  multiplied  by the average  account value over
     the period, multiplied by 184/365 (to reflect the one-half year period).

                                       22



SPECTRA FUND
ADDITIONAL INFORMATION (UNAUDITED)

TRUSTEES AND OFFICERS OF THE FUND

Information  about the Trustees and officers of the Fund is set forth below.  In
the table the term "Alger Fund Complex" refers to the Fund, The Alger Funds, The
Alger American Fund, The Alger Institutional  Funds, The China-U.S.  Growth Fund
and Castle  Convertible  Fund,  Inc.,  each of which is a registered  investment
company  managed by Fred  Alger  Management,  Inc.  ("Alger  Management").  Each
Trustee serves until an event of termination,  such as death or resignation,  or
until his successor is duly elected;  each officer's term of office is one year.
Unless  otherwise  noted,  the address of each  person  named below is 111 Fifth
Avenue, New York, NY 10003.

                                                                    NUMBER OF
                                                                  PORTFOLIOS IN
                                                         TRUSTEE  THE ALGER FUND
NAME, AGE, POSITION                                       AND/OR  COMPLEX WHICH
   WITH THE FUND                                         OFFICER   ARE OVERSEEN
    AND ADDRESS              PRINCIPAL OCCUPATIONS        SINCE     BY TRUSTEE
- --------------------------------------------------------------------------------
INTERESTED TRUSTEES

Fred M. Alger III (70)   Chairman of the Board of          1974          22
  Chairman of the Board  Alger Associates, Inc.
                         ("Associates"), Fred Alger &
                         Company, Incorporated ("Alger
                         Inc."), Alger Management, Alger
                         Properties, Inc. ("Properties"),
                         Alger Shareholder Services, Inc.
                         ("Services"), Alger Life
                         Insurance Agency, Inc. ("Agency"),
                         Fred Alger International Advisory
                         S.A. ("International"), and five
                         of the six funds in the Alger
                         Fund Complex; Chairman of the
                         Boards of Alger SICAV ("SICAV")
                         and Analysts Resources, Inc.
                         ("ARI").

Dan C. Chung (43)        President, Director and Chief     2001          16
  President and Trustee  Investment Officer of Alger
                         Management; President and
                         Director of Associates, Alger
                         Inc., Properties, Services,
                         Agency, International, ARI and
                         Trust; Trustee/Director of four
                         of the six funds in the Alger
                         Fund Complex.

Hilary M. Alger (44)     Trustee/Director of five of the   2003         17
  Trustee                six funds in the Alger Fund
                         Complex; Director of Development,
                         Pennsylvania Ballet; formerly
                         Associate Director of
                         Development, College of Arts and
                         Sciences, University of Virginia,
                         formerly Director of Development
                         and Communications, Lenox Hill
                         Neighborhood House.


                                       23



                                                                    NUMBER OF
                                                                  PORTFOLIOS IN
                                                         TRUSTEE  THE ALGER FUND
NAME, AGE, POSITION                                       AND/OR  COMPLEX WHICH
   WITH THE FUND                                         OFFICER   ARE OVERSEEN
    AND ADDRESS              PRINCIPAL OCCUPATIONS        SINCE     BY TRUSTEE
- --------------------------------------------------------------------------------

NON-INTERESTED TRUSTEES

Stephen E. O'Neil (73)   Attorney; Private investor        1972         23
  Trustee                since 1981; Director of
                         Brown-Forman Corporation;
                         Trustee/Director of the six
                         funds in the Alger Fund Complex;
                         formerly of Counsel to the law
                         firm of Kohler & Barnes.

Charles F. Baird,        Managing Partner of North Castle  2000         16
  Jr. (52)               Partners, a private equity
  Trustee                securities group; Chairman of
                         Equinox, Leiner Health Products,
                         Elizabeth Arden Day Spas, Grand
                         Expeditions and EAS; Trustee/
                         Director of four of the six funds
                         in the Alger Fund Complex.
                         Formerly Managing Director of
                         AEAInvestors, Inc.

Roger P. Cheever (60)    Associate Dean of Development,    2000         16
  Trustee                Harvard University; Trustee/
                         Director of four of the six funds
                         in the Alger Fund Complex.
                         Formerly Deputy Director of the
                         Harvard College Fund.

Lester L. Colbert,       Private investor; Trustee/        2000         17
  Jr. (71)               Director of five of the six
  Trustee                funds in the Alger Fund Complex.
                         Formerly Chairman of the Board
                         and Chief Executive Officer of
                         Xidex Corporation.

Nathan E. Saint-Amand,   Medical doctor in private         1986         23
  M.D.  (67)             practice; Co-Partner Fishers
  Manhattan              Island Partners; Member of the
                         Board of the Trustee Institute;
                         Trustee/Director of the six
                         funds in the Alger Fund Complex.
                         Formerly Co-Chairman Special
                         Projects Committee of Memorial
                         Sloan Kettering.

OFFICERS

Frederick A. Blum (51)   Executive Vice President and      1996         N/A
  Treasurer              Treasurer of Alger, Inc.,
                         Alger Management, Properties,
                         Associates, ARI, Services and
                         Agency since September 2003
                         and Senior Vice President prior
                         thereto; Treasurer or Assistant
                         Treasurer, and Assistant
                         Secretary, of each of the other
                         five investment companies in the
                         Alger Fund Complex since the
                         later of 1996 or its inception.
                         Director of SICAV and
                         International and Chairman of the
                         Board (and prior thereto, Senior
                         Vice President) and Treasurer of
                         Alger National Trust Company
                         since 2003.


                            24



                                                                    NUMBER OF
                                                                  PORTFOLIOS IN
                                                         TRUSTEE  THE ALGER FUND
NAME, AGE, POSITION                                       AND/OR  COMPLEX WHICH
   WITH THE FUND                                         OFFICER   ARE OVERSEEN
    AND ADDRESS              PRINCIPAL OCCUPATIONS        SINCE     BY TRUSTEE
- --------------------------------------------------------------------------------

OFFICERS (CONTINUED)

Hal Liebes (41)          Executive Vice President, Chief   2005        N/A
  Secretary and Chief    Legal Officer and Secretary of
  Compliance Officer     Alger Inc., Secretary of the
                         other five investment companies
                         in the Alger Fund Complex-2005.
                         Formerly U.S. General Counsel
                         1994-2002 and Global General
                         Counsel 2002-2004, Credit
                         Suisse Asset Management; Global
                         Chief Compliance Officer 2004,
                         AMVESCAP PLC.


Michael D. Martins (39)  Senior Vice President of Alger    2005        N/A
  Assistant Treasurer    Management; Assistant Treasurer
  and Assistant          and Assistant Secretary of the
  Secretary              other five investment companies
                         in the Alger Fund Complex-2005.
                         Formerly Vice President, Brown
                         Brothers Harriman & Co.
                         1997-2004.


Messrs.  Alger and Chung are "interested  persons"(as  defined in the Investment
Company Act) of the Fund because of their  affiliations  with Alger  Management.
Mr.  Chung  is Mr.  Alger's  son-in-law.  Ms.  Alger  is a  daughter  of Fred M.
AlgerIII. Ms. Alger is an "interested person" because she is an immediate family
member of Mr. Alger.  No Trustee is a director of any public  company  except as
may be indicated under "Principal Occupations."

The Statement of Additional  Information  contains additional  information about
the Fund's  Trustees  and is  available  without  charge upon request by calling
(800) 992-3863.

                            25



SPECTRA FUND
ADDITIONAL INFORMATION (UNAUDITED)

INVESTMENT MANAGEMENT AGREEMENT RENEWAL

At an in-person  meeting  held on  September  7, 2005,  the Trustees of the Fund
considered renewal of the Investment  Management  Agreement,  dated February 12,
1996, (the "Agreement")  between the Fund and Fred Alger  Management,  Inc. (the
"Adviser").  The  Trustees  who are not  "interested  persons"  of the Fund (the
"Independent Trustees") within the meaning of the Investment Company Act of 1940
(the  "1940  Act")  also met  separately  with their  counsel  to  consider  the
Agreement. In evaluating the Agreement, the Trustees drew on materials that they
requested  and which were  provided  to them in  advance  of the  meeting by the
Adviser and by counsel to the Fund. The materials covered,  among other matters,
(i) the nature, extent and quality of the services provided by the Adviser under
the Agreement,  (ii) the investment  performance of the Fund, (iii) the costs to
the  Adviser of its  services  and the  profits  realized by the Adviser and its
affiliates Fred Alger & Company,  Incorporated and Alger  Shareholder  Services,
Inc.  from  their  relationship  with the  Fund,  and (iv) the  extent  to which
economies  of scale  would be  realized if and as the Fund grows and whether the
fee level in the Agreement  reflects these  economies of scale.  These materials
included an analysis of the Fund and the Adviser's services by Callan Associates
Inc.  ("Callan"),  an  independent  consulting  firm whose  specialties  include
assistance to fund trustees and directors in their review of advisory  contracts
pursuant  to  Section  15(c) of the 1940  Act.  At the  meeting,  senior  Callan
personnel provided a presentation to the Trustees based on the Callan materials.

In deciding  whether to renew the  Agreement,  the Trustees  considered  various
factors, including those enumerated above. They also considered other direct and
indirect benefits to the Adviser and its affiliates from their relationship with
the Fund.

NATURE, EXTENT AND QUALITY OF SERVICES

In considering  the nature,  extent and quality of the services  provided by the
Adviser,  the Trustees relied on their prior experience as Trustees of the Fund,
their  familiarity  with the personnel and resources of Alger Management and its
affiliates, and the materials provided at the meeting. They noted that under the
Agreement the Adviser is responsible  for managing the investment  operations of
the Fund and for providing a full range of administrative, compliance, reporting
and accounting  services  necessary for the conduct of the Fund's  affairs.  The
Trustees  reviewed  the  background  and  experience  of  the  Adviser's  senior
investment management personnel, including those individuals responsible for the
investment   operations  of  the  Fund.  They  also  considered  the  resources,
operational  structures  and  practices  of the Adviser in  managing  the Fund's
portfolio and administering the Fund's affairs, as well as the Adviser's overall
investment  management  business.  The  Trustees  concluded  that the  Adviser's
experience,  resources and strength in those areas of importance to the Fund are
considerable.  They noted  especially  the  Adviser's  history of  expertise  in
managing  portfolios of "growth" stocks like that of the Fund. The Trustees also
considered  the level and depth of the  Adviser's  ability to execute  portfolio
transactions  to effect  investment  decisions.  They also noted the  history of
extremely    favorable   reviews   of   the   Adviser's    shareholder-relations
representatives  by an independent  rating concern.  Finally,  the Trustees took
notice of the  enhancements  to the control and  compliance  environment  at the
Adviser  and  within  the  Fund.  On the  basis of their  review,  the  Trustees
determined  that the nature and extent of the  services  provided to the Fund by
the Adviser (including the Fund's performance,  as discussed below) were of high
quality and could be expected to remain so.

INVESTMENT PERFORMANCE OF THE FUND

Drawing  upon  information  provided  at the  meeting by the  Adviser as well as
Callan and upon reports  provided to the Trustees by the Adviser  throughout the
preceding  year,  the Trustees  noted that the Fund's  performance  had improved
substantially  for the year ended August 31, 2005,  beating the Fund's benchmark
index by a significant margin and placing the Fund well above the median for its
peer group.  The Trustees  acknowledged  that the  Adviser's  recent  efforts to
improve the Fund's performance and, more generally, the firm's rebuilding of the
investment  team in response to the  devastating  events of September  11, 2001,
were bearing fruit. Accordingly, they concluded that the performance of the Fund
strongly supported renewal of the Agreement.

                            26



PROFITABILITY TO THE ADVISER AND ITS AFFILIATES

The Trustees  considered the profitability of the advisory  arrangement with the
Fund to the Adviser and the Adviser's affiliates and the methodology used by the
Adviser in determining such  profitability.  The Trustees had been provided with
data on the Fund's  profitability to the Adviser and to the Adviser's affiliates
for the Fund's most recent fiscal year. In addition,  the Trustees  reviewed the
Fund's  management  fees and expense  ratios and  compared  them with a group of
comparable  funds.  In order to assist the Trustees in this  comparison,  Callan
provided the Trustees with  comparative  information  with respect to fees paid,
and expense ratios incurred,  by similar funds. That information  indicated that
the Fund's  advisory fee and expense ratio were higher than the fees and expense
ratios  of most  of the  funds  in the  Callan  reference  group.  The  Trustees
determined  that this fact should be taken into  account in weighing the size of
the fee against the nature,  extent and quality of the services provided.  After
discussing with representatives of the Adviser and Callan the methodologies used
in computing the costs that formed the bases of the profitability  calculations,
they turned to the data provided.  After analysis and discussion  they concluded
that, to the extent that the Adviser's and its  affiliates'  relationships  with
the  Fund  had  been  profitable  to  either  or both  of  those  entities,  the
profitability was not unacceptable.

ECONOMIES OF SCALE

On the  basis of  their  discussions  with  management  and  their  analysis  of
information  provided at the meeting, the Trustees determined that the nature of
the Fund and its  operations  is such that the  Adviser  is  likely  to  realize
economies of scale in the  management of the Fund as it grows in size,  but that
in view of the comparatively small size of the Fund and the current level of its
profitability to the Adviser, adoption of breakpoints in the advisory fee, while
possibly  appropriate  at a later  date,  could  await  further  analysis of the
sources and potential  scale of the  economies and the fee structure  that would
best reflect them. Accordingly,  the Trustees requested that the Adviser address
this topic with the Trustees at future meetings.

OTHER BENEFITS TO THE ADVISER

The  Trustees  considered  whether the  Adviser  benefits in other ways from its
relationship  with the Fund.  In that  connection,  they noted that the  Adviser
maintains  soft-dollar  arrangements  in  connection  with the Fund's  brokerage
transactions,  data on which is  regularly  supplied  to the  Trustees  at their
quarterly meetings.  The Trustees also noted that the Fund's  Distributor,  Fred
Alger &  Company,  Incorporated,  provides a  substantial  portion of the Fund's
brokerage and receives  shareholder  servicing  fees from the Fund as well,  and
that  Alger  Shareholder  Services,  Inc.  receives  fees from the Fund  under a
shareholder services agreement.  The Trustees had been provided with information
regarding,  and had  considered,  the  brokerage and  shareholder  servicing fee
benefits in connection with their review of the profitability to the Adviser and
its affiliates of their  relationship with the Fund. As to the benefits received
from the soft-dollar  arrangements,  the Trustees  decided that, in light of the
nature and scale of the arrangements,  they were not so significant as to render
the Adviser's fees excessive.

CONCLUSION

After weighing the foregoing  factors,  the Trustees,  including the Independent
Trustees,  approved the renewal of the  Investment  Management  Agreement.  They
reasoned that,  considered in themselves,  the services  provided by the Adviser
were appropriate for the needs of the Fund and of high quality,  that the recent
performance  of the  Fund  had  been  excellent,  and  that  the  Adviser  could
reasonably be expected to provide services of comparable  quality in the future.
The  Trustees  determined  that the fee,  while  higher than that charged by the
majority of similar funds, was not so high as to be unreasonable when considered
in relation to the nature,  extent and high  quality of the  services  currently
provided, including the Fund's recent performance,  that the Fund's relationship
with the Adviser and its  affiliates  was not so profitable as to render the fee
excessive,  that any  additional  benefits to the Adviser  and/or its affiliates
other than those already considered in the profitability  analysis were not of a
magnitude materially to affect the Trustees' deliberations,  and that the Fund's
current  size was such that the issue of  sharing  economies  of scale  with the
Fund, while inviting future consideration, was not of major current importance.

                                       27



SPECTRA FUND
ADDITIONAL INFORMATION (UNAUDITED)

PROXY VOTING POLICIES

A description  of the policies and  procedures the Fund uses to determine how to
vote proxies  relating to portfolio  securities  and the proxy voting  record is
available,  without  charge,  by calling (800)  711-6141 or online on the Fund's
website at http://www.alger.com or on the SEC's website at http://www.sec.gov.

QUARTERLY FUND HOLDINGS

The Fund files its complete schedule of portfolio  holdings with the SEC for the
first and third quarter of each fiscal year on Form N-Q. Forms N-Q are available
online on the Fund's website at  http://www.alger.com or on the SEC's website at
HTTP://WWW.SEC.GOV. The Fund's Forms N-Q may be reviewed and copied at the SEC's
Public Reference Room in Washington, D.C. Information regarding the operation of
the SEC's Public  Reference  Room may be obtained by calling  1-800-SEC-0330.  A
copy of the most recent quarterly holdings may also be obtained from the Fund by
calling (800) 711-6141.

                                       28



SPECTRA FUND

111 Fifth Avenue
New York, NY 10003
(800) 711-6141
www.alger.com

INVESTMENT MANAGER
Fred Alger Management, Inc.
111 Fifth Avenue
New York, NY 10003

TRANSFER AGENT AND DIVIDEND DISBURSING AGENT
Boston Financial Data Services, Inc.
P.O. Box 8480
Boston, MA 02266

This report is submitted  for the general  information  of the  shareholders  of
Spectra Fund. It is not authorized  for  distribution  to prospective  investors
unless  accompanied  by an effective  Prospectus  for the Fund,  which  contains
information concerning the Fund's investment policies, fees and expenses as well
as other pertinent information.




[LOGO]







SAS 103105




[LOGO] Spectra Fund
       Boston Financial Data Services, Inc.
       P.O. Box 8480
       Boston, MA 02266

SAS 103105



ITEM 2.   CODE OF ETHICS.

          (a) The Registrant has adopted a code of ethics (the "Code of Ethics")
          that applies to its principal executive officer, principal financial
          officer, principal accounting officer or controller, or persons
          performing similar functions.

          (b) Not applicable.

          (c) The amendments to the Code of Ethics are: The 60-day holding
          period for selling securities at gains now applies to Access persons,
          before it applied only to Advisory persons; Prohibition on IPO's now
          applies to Access persons, before it applied only to Advisory persons;
          Approval from Legal/Compliance is now necessary for investments in
          Private Placements by Access persons, before, such approval was only
          required of Advisory persons.

          (d) The Registrant has not granted a waiver or an implicit waiver from
          a provision of its Code of Ethics during the period covered by the
          shareholder report presented in Item 1 hereto.

          (e) Not applicable.

          (f) The Registrant's Code of Ethics is attached as an Exhibit hereto.

ITEM 3.   AUDIT COMMITTEE FINANCIAL EXPERT.

          The Board of Trustees of the Registrant determined that Stephen E.
          O'Neil is an audit committee financial expert (within the meaning of
          that phrase specified in the instructions to Form N-CSR) on the
          Registrant's audit committee. Mr. O'Neil is an "independent" trustee -
          i.e., he is not an interested person of the Registrant as defined in
          the Investment Company Act of 1940, nor has he accepted directly or
          indirectly any consulting, advisory or other compensatory fee from the
          Registrant, other than in his capacity as Trustee.

ITEM 4.   PRINCIPAL ACCOUNTANT FEES AND SERVICES.

          a) Audit Fees:
                    October 31, 2005           $21,600
                    October 31, 2004           $32,000

          b) Audit-Related Fees: NONE

          c) Tax Fees for tax advice, tax compliance and tax planning:
                    October 31, 2005           $3,470
                    October 31, 2004           $3,300

          d) All Other Fees:
                    October 31, 2005           $1,650
                    October 31, 2004           $5,000

             Other fees include a review and consent for Registrants
             registration statement filing and a review of the semi-annual
             financial statements.

          e) 1) Audit Committee Pre-Approval Policies And Procedures:

             Audit and non-audit services provided by the Registrant's
             independent registered public accounting firm (the "Auditors") on
             behalf the Registrant must be pre-approved by the Audit
             Committee. Non-audit services provided by the Auditors on behalf
             of the Registrant's Investment Adviser or any entity controlling,
             controlled by, or under common control with the Investment
             Adviser must be pre-approved by the Audit Committee if such
             non-audit services directly relate to the operations or financial
             reporting of the Registrant.



             2) All fees in item 4(b) through 4(d) above were approved by the
             Registrants' Audit Committee.

          f) Not Applicable

          g) Non-Audit Fees:
                October 31, 2005           $186,831 and 56,050 Euros
                October 31, 2004           $157,449 and 82,300 Euros

          h) The audit committee of the board of trustees has considered whether
          the provision of the non-audit services that were rendered to the
          registrant's investment adviser and any entity controlling, controlled
          by, or under common control, with the adviser that provides ongoing
          services to the registrant that were not approved pursuant to
          (c)(7)(ii) of Rule 2-01 of Regulation S-X is compatible with
          maintaining the principle accountant's independence.

ITEM 5.   AUDIT COMMITTEE OF LISTED REGISTRANTS.

          Not applicable

ITEM 6.   SCHEDULE OF INVESTMENTS

          Not applicable

ITEM 7.   DISCLOSURE OF PROXY VOTING POLICIES AND PROCEDURES FOR CLOSED END
          MANAGEMENT INVESTMENT COMPANIES.

          Not applicable

ITEM 8.   PORTFOLIO MANAGERS OF CLOSED-END MANAGEMENT INVESTMENT COMPANIES.

          Not applicable

ITEM 9.   PURCHASES OF EQUITY SECURITIES BY CLOSED-END MANAGEMENT INVESTMENT
          COMPANY AND AFFILIATED PURCHASERS.

          Not applicable

ITEM 10.  SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS.

          None

ITEM 11.  CONTROLS AND PROCEDURES.

          (a) The Registrant's principal executive officer and principal
          financial officer have concluded that the Registrant's disclosure
          controls and procedures (as defined in Rule 30a-3(c) under the
          Investment Company Act of 1940, as amended) are effective based on
          their evaluation of the disclosure controls and procedures as of a
          date within 90 days of the filing date of this document.

          (b) No changes in the Registrant's internal control over financial
          reporting occurred during the Registrant's second fiscal half-year
          that materially affected, or are reasonably likely to materially
          affect, the Registrant's internal control over financial reporting.

ITEM 12.  EXHIBITS.

          (a) (1) Code of Ethics as Exhibit 99.CODE ETH

          (a) (2) Certifications of principal executive officer and principal
          financial officer as required by rule 30a-2(a) under the Investment
          Company Act of 1940 are attached as Exhibit 99.CERT

          (b) Certifications of principal executive officer and principal
          financial officer as required by rule 30a-2(b) under the Investment
          Company Act of 1940 are attached as Exhibit 99.906CERT



SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934 and the
Investment Company Act of 1940, the registrant has duly caused this report to be
signed on its behalf by the undersigned, thereunto duly authorized.

Spectra Fund

 By:   /s/Dan C. Chung

       Dan C. Chung

       President

Date:  January 6, 2006

Pursuant to the requirements of the Securities Exchange Act of 1934 and the
Investment Company Act of 1940, this report has been signed below by the
following persons on behalf of the registrant and in the capacities and on the
dates indicated.

By:    /s/Dan C. Chung

       Dan C. Chung

       President

Date:  January 6, 2006


By:    /s/Frederick A. Blum

       Frederick A. Blum

       Treasurer

Date:  January 6, 2006