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. GREGORY S. DUCH
                          FRED ALGER MANAGEMENT, INC.
                                111 FIFTH AVENUE
                               NEW YORK, NY 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:                April 30, 2003



Item 1. REPORTS TO STOCKHOLDERS


                                  SPECTRA FUND








                               SEMI-ANNUAL REPORT
                                 APRIL 30, 2003
                                   (UNAUDITED)




                               [Graphic Omitted]










Dear Shareholders,

                                                                   June 16, 2003

      Slow, steady economic growth; reliable consumers;  tentative corporations;
and war. That is the short answer to the question:  what happened during the six
months  ended  April  30?  The last two  months of 2002 saw the  equity  markets
recover  from their lows of October  9,  though a  significant  portion of those
gains were in  technology  stocks  and were then given up in the first  weeks of
2003 because the fundamentals had not yet improved.

      However,  throughout this period,  the economy remained in a steady growth
pattern.  It was not a dramatic period.  Consumer spending accounted for most of
the economic  growth.  Consumers were aided by historically  low interest rates,
already  well below 4% on the 10-year note by April and  continually  decreasing
thereafter.  Low rates led to another  wave of mortgage  refinancing,  which put
more money in people's pockets.  That refinancing boom,  combined with increased
federal spending, tax cuts, and a Federal Reserve that has kept short-term rates
very low, buoyed consumer  spending during a time of weak employment,  tentative
companies, and tumultuous international affairs.

      A cold and snowy February of 2003 combined with rising tension and concern
about Iraq dampened  economic  activity  across the board.  Consumers pared back
purchases on certain  items,  and  companies  were loathe to  undertake  capital
expenditures  ahead of the war. As a result,  the economy grew at an annual rate
of less than 2% for the first quarter of 2003. However,  when it became clear in
early March that war was inevitable,  the markets rallied. It is often said that
the  markets  hate  uncertainty.  The rally that began in March was  certainly a
testament to that notion.  The markets  seesawed during the uncertain first days
of the war, but then resumed their upward  movement as Saddam  Hussein's  regime
crumbled.  The result was that from November 1, 2002 through April 30, 2003, the
Dow rose 2.1%, the S&P 500 was up 4.5%, and the NASDAQ gained 10.1%.

      Now,  for the first time in over two years,  Wall Street has begun to look
to the future.  Companies that can show healthy balance sheets and an ability to
improve  productivity  and expand their  businesses  are becoming  attractive to
investors.  That is as it  should  be,  but it has not been the case for quite a
while.  The markets and the country in general are  beginning to emerge from two
years  that  included a  recession,  terrorism,  war,  and  corporate  scandals.
Sentiment has slowly been shifting away from fear and toward guarded hope.  That
shift should lead to support for higher levels for the equity markets. That does
not mean a return to  irrational  exuberance,  but it does mean a more  balanced
market where good companies and good stock picking are rewarded.

      Respectfully submitted,

      /s/ Dan C. Chung
      ----------------
      Dan C. Chung
      Chief Investment Officer




SPECTRA FUND
SCHEDULE OF INVESTMENTS (UNAUDITED)
April 30, 2003

    SHARES     COMMON STOCKS--99.7%                                       VALUE
   --------                                                              -------

               BANKS--1.7%
     162,200   Mellon Financial Corporation                          $ 4,290,190
                                                                     -----------
               BIOTECHNOLOGY--7.5%
     172,000   Amgen Inc.*                                            10,545,320
     108,300   Genzyme Corp.--General Division*                        4,362,324
      78,100   Gilead Sciences, Inc. *                                 3,603,534
                                                                     -----------
                                                                      18,511,178
                                                                     -----------
               COMMERCIAL SERVICES & SUPPLIES--1.0%
      46,100   Apollo Group, Inc. Cl. A*                               2,498,574
                                                                     -----------
               COMMUNICATION EQUIPMENT--4.7%
     414,500   CIENA Corporation*                                      2,018,615
     382,400   Cisco Systems, Inc.*                                    5,751,296
     389,500   Juniper Networks, Inc.*+                                3,980,690
                                                                     -----------
                                                                      11,750,601
                                                                     -----------
               COMPUTERS & PERIPHERALS--3.6%
     584,600   EMC Corporation*                                        5,314,014
     278,700   Network Appliance, Inc.*                                3,701,136
                                                                     -----------
                                                                       9,015,150
                                                                     -----------
               DIVERSIFIED FINANCIALS--6.4%
     225,600   Citigroup Inc.                                          8,854,800
     123,300   Merrill Lynch & Co., Inc.                               5,061,465
      16,420   SLM Corporation                                         1,839,040
                                                                     -----------
                                                                      15,755,305
                                                                     -----------
               ENERGY EQUIPMENT & SERVICES--1.8%
     202,700   Halliburton Company                                     4,339,807
                                                                     -----------
               HEALTH CARE EQUIPMENT & SUPPLIES--4.9%
      50,400   Alcon, Inc.*                                            2,220,120
      44,700   Boston Scientific Corporation*                          1,924,335
      87,100   Guidant Corporation*                                    3,396,029
     100,295   Zimmer Holdings, Inc.*                                  4,703,835
                                                                     -----------
                                                                      12,244,319
                                                                     -----------
               HOTELS, RESTAURANTS & LEISURE--.8%
      88,100   Starbucks Corporation*                                  2,069,469
                                                                     -----------
               INDUSTRIAL CONGLOMERATES--4.1%
     344,300   General Electric Company                               10,139,635
                                                                     -----------
               INSURANCE--2.6%
      55,600   AFLAC Incorporated                                      1,818,676
      80,600   American International Group, Inc.                      4,670,770
                                                                     -----------
                                                                       6,489,446
                                                                     -----------
               INTERNET & CATALOG RETAIL--3.5%
      46,100   Amazon.com, Inc.*                                       1,321,687
      79,800   eBay Inc.*+                                             7,403,046
                                                                     -----------
                                                                       8,724,733
                                                                     -----------
               INTERNET SOFTWARE & SERVICES--1.8%
     180,900   Yahoo! Inc.*                                            4,482,702
                                                                     -----------


                                        2


SPECTRA FUND
SCHEDULE OF INVESTMENTS (UNAUDITED) (CONTINUED)
April 30, 2003

    SHARES     COMMON STOCKS (CONTINUED)                                 VALUE
   --------                                                             -------

               INVESTMENT TRUST--3.0%
      75,000   iShares Russell 2000 Growth Index Fund                $ 3,163,500
      75,000   iShares Russell Midcap Growth Index Fund+               4,158,750
                                                                     -----------
                                                                       7,322,250
                                                                     -----------
               MACHINERY--.8%
      27,000   Danaher Corporation                                     1,862,460
                                                                     -----------
               MEDIA--5.7%
     310,100   AOL Time Warner Inc.*                                   4,242,168
     106,800   Comcast Corporation Cl. A*                              3,407,988
     333,500   Liberty Media Corporation Series A*                     3,668,500
      62,400   Viacom Inc. Cl. B*                                      2,708,784
                                                                     -----------
                                                                      14,027,440
                                                                     -----------
               MULTILINE RETAIL--1.8%
      77,855   Wal-Mart Stores, Inc.                                   4,384,794
                                                                     -----------
               PERSONAL PRODUCTS--1.3%
     105,600   Gillette Company                                        3,215,520
                                                                     -----------
               PHARMACEUTICALS--13.1%
      74,800   Allergan, Inc.                                          5,254,700
      89,800   Barr Laboratories, Inc.*                                4,992,880
      44,800   Johnson & Johnson                                       2,524,928
     134,700   Merck & Co., Inc.                                       7,836,846
     169,880   Pfizer Inc.                                             5,223,810
      76,000   Teva Pharmaceutical Industries Ltd. ADR+                3,549,200
      72,950   Wyeth                                                   3,175,513
                                                                     -----------
                                                                      32,557,877
                                                                     -----------
               SEMICONDUCTOR EQUIPMENT & PRODUCTS--8.3%
     143,000   Broadcom Corporation Cl. A*                             2,558,270
     328,000   Intersil Corporation Cl. A*+                            6,068,000
      80,800   KLA-Tencor Corporation*+                                3,312,800
      90,400   Maxim Integrated Products, Inc.                         3,551,816
     185,600   Micron Technology, Inc.*                                1,577,600
     182,100   National Semiconductor Corporation*                     3,410,733
                                                                     -----------
                                                                      20,479,219
                                                                     -----------
               SOFTWARE--9.6%
     436,600   Microsoft Corporation                                  11,163,862
     801,500   Oracle Corporation*                                     9,521,820
     141,750   VERITAS Software Corporation*                           3,119,918
                                                                     -----------
                                                                      23,805,600
                                                                     -----------
               SPECIALTY RETAIL--9.1%
     256,700   Abercrombie & Fitch Co. Cl. A *                         8,440,296
     131,900   Best Buy Co., Inc.*                                     4,561,102
     483,700   Gap, Inc.                                               8,043,931
      48,100   Home Depot, Inc.                                        1,353,053
                                                                     -----------
                                                                      22,398,382
                                                                     -----------
               TEXTILES, APPAREL & LUXURY GOODS--1.3%
      58,600   NIKE, Inc.  Cl. B                                       3,136,858
                                                                     -----------

                                        3



SPECTRA FUND
SCHEDULE OF INVESTMENTS (UNAUDITED) (CONTINUED)
April 30, 2003

    SHARES    COMMON STOCKS (CONTINUED)                                 VALUE
   --------                                                            -------

              WIRELESS TELECOMMUNICATION SERVICES--1.3%
     168,300  Vodafone Group PLC Sponsored ADR+ .................. $ 3,325,608
                                                                   -----------
              Total Common Stocks
                (Cost $226,417,110)                                246,827,117
                                                                   -----------

   PRINCIPAL
    AMOUNT    SHORT-TERM INVESTMENTS--10.1%
  ----------
              U.S. GOVERNMENT & AGENCY  OBLIGATIONS--1.0%
  $2,600,000  Federal National Mortgage Association, 1.25%, 5/1/03
                (Cost $2,600,000) ................................   2,600,000
                                                                   -----------

    SHARES
   --------
              OTHER SHORT-TERM INVESTMENTS--9.1%
  22,446,362  Security Lending Quality Trust
                (Cost $22,446,362)(b) ............................  22,446,362
                                                                   -----------
              Total Short-Term Investments
                (Cost $25,046,362) ...............................  25,046,362
                                                                   -----------
Total Investments
  (Cost $251,463,472)(a) ...............................   109.8%   271,873,479
Liabilities in Excess of Other Assets ..................    (9.8)   (24,213,398)
                                                           -----   ------------
Net Assets .............................................   100.0%  $247,660,081
                                                           =====   ============






- -----------
 *  Non-income producing security.
 +  Securities Partially or Fully on Loan.

(a) At April 30, 2003, the net unrealized appreciation on investments,  based on
    cost  for  federal  income  tax  purposes  of   $254,806,795,   amounted  to
    $17,066,684  which consisted of aggregate gross  unrealized  appreciation of
    $23,383,094 and aggregate gross unrealized depreciation of $6,316,410.
(b) Represents investment of cash collateral received for securities on loan.

                       See Notes to Financial Statements.

                                       4










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                                       5



SPECTRA FUND
FINANCIAL HIGHLIGHTS
FOR A SHARE OUTSTANDING
THROUGHOUT THE PERIOD


                                             INCOME FROM
                                        INVESTMENT OPERATIONS
                                        ---------------------
                                                         NET
                                                      REALIZED                        DISTRIBUTIONS
                       NET ASSET          NET      AND UNREALIZED       TOTAL             FROM
                        VALUE,         INVESTMENT    GAIN (LOSS)        FROM               NET
                       BEGINNING         INCOME          ON          INVESTMENT         REALIZED
                       OF PERIOD         (LOSS)      INVESTMENTS     OPERATIONS           GAINS
                       ---------       ----------   -------------    ----------         ---------
                                                                           
SPECTRA FUND
CLASS A (i)
Six Months Ended
  4/30/03 (ii)(iii) ..  $ 4.76          $(0.04)(v)      $0.28          $ 0.24             $  --
Year ended 10/31/02       6.32           (0.09)(v)      (1.47)          (1.56)               --
Year ended 10/31/01      10.63           (0.08)(v)      (3.60)          (3.68)            (0.63)
Four months ended
  10/31/00(iii) ......   12.28           (0.02)         (1.63)          (1.65)               --

CLASS N (iv)
Six Months Ended
  4/30/03(ii)(iii) ...  $ 4.76          $(0.03)(v)      $0.25          $ 0.22             $  --
Year ended 10/31/02       6.32           (0.09)(v)      (1.47)          (1.56)               --
Year ended 10/31/01      10.63           (0.08)(v)      (3.60)          (3.68)            (0.63)
Year ended 10/31/00      10.76           (0.08)          0.88            0.80             (0.93)
Year ended 10/31/99       6.65           (0.07)          4.22            4.15             (0.04)
Year ended 10/31/98       5.74           (0.02)          0.98            0.96             (0.05)

- -------------
(i)   Initially offered July 1, 2000.

(ii)  Unaudited.

(iii) Ratios have been annualized; total return has not been annualized.

(iv)  Per share data has been  adjusted  to reflect the effect of a 3 for 1
      stock split which occurred April 23, 1999.

(v)   Amount was computed  based on average shares  outstanding  during the
      period.

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









                       See Notes to Financial Statements.
                                       6






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

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



   $ 5.00         5.04%(vi)   $  9,273       1.99%        (1.46)%        98.94%
     4.76       (24.68)(vi)      6,722       1.98         (1.52)        172.25
     6.32       (36.20)(vi)     12,951       1.88         (1.03)        114.75

    10.63       (13.44)(vi)     14,711       1.82         (1.05)        118.82



   $ 4.98         4.62%       $238,387       2.01%        (1.46)%        98.94%
     4.76       (24.68)        252,620       1.98         (1.52)        172.25
     6.32       (36.20)        423,860       1.88         (0.99)        114.75
    10.63         6.21         876,132       1.82         (1.29)        118.82
    10.76        62.66         548,656       1.85         (1.52)        102.54
     6.65        16.94         193,039       1.96         (1.24)        190.74












                                       7



SPECTRA FUND
STATEMENT OF ASSETS AND LIABILITIES (UNAUDITED)
APRIL 30, 2003

                                                                        
ASSETS:
   Investments in securities, at value (cost $251,463,472), see
     accompanying schedule of investments .....................               $271,873,479
   Cash .......................................................                     49,233
   Receivable for investment securities sold ..................                  6,010,650
   Receivable for shares of beneficial interest sold ..........                    186,514
   Dividends receivable .......................................                     38,482
   Prepaid expenses ...........................................                     50,754
                                                                              ------------
       Total Assets ...........................................                278,209,112
LIABILITIES:
   Payable for securities loaned ..............................   $22,446,362
   Payable for investment securities purchased ................     2,041,068
   Payable for shares of beneficial interest redeemed .........     5,539,691
   Investment advisory fees payable ...........................       300,354
   Shareholder servicing fees payable .........................        50,059
   Transfer agent fees payable ................................        65,432
   Trustees' fees payable .....................................         3,297
   Accrued expenses ...........................................       102,768
                                                                  -----------
       Total Liabilities ......................................                 30,549,031
                                                                              ------------
NET ASSETS ....................................................               $247,660,081
                                                                              ============
NET ASSETS CONSIST OF:
   Paid-in capital ............................................               $577,826,641
   Undistributed net investment income (accumulated loss) .....                 (1,734,824)
   Undistributed net realized gain (accumulated loss) .........               (348,841,743)
   Net unrealized appreciation (depreciation) of investments ..                 20,410,007
                                                                              ------------
NET ASSETS ....................................................               $247,660,081
                                                                              ============

Class A
   Net Asset Value Per Share ..................................               $       5.00
                                                                              ============
   Offering Price Per Share ...................................               $       5.31
                                                                              ============

Class N
   Net Asset Value and Offering Price Per Share ...............               $       4.98
                                                                              ============

Shares of beneficial interest outstanding--Note 5
   Class A ....................................................                  1,853,832
                                                                              ============
   Class N ....................................................                 47,821,663
                                                                              ============





                       See Notes to Financial Statements.
                                       8


SPECTRA FUND
STATEMENT OF OPERATIONS (UNAUDITED)
FOR THE SIX MONTHS ENDED APRIL 30, 2003

                                                                  
INVESTMENT INCOME:
   Income:
     Interest ............................................               $    89,278
     Dividends ...........................................                   561,614
                                                                         -----------
       Total Income ......................................                   650,892
   Expenses:
     Investment advisory fees--Note 2(a) .................  $  1,778,119
     Shareholder servicing fees--Note 2(e) ...............       296,353
     Transfer agent fees .................................       147,002
     Custodian fees ......................................        16,621
     Registration fees ...................................        20,864
     Trustees' fees ......................................        21,413
     Professional fees ...................................        17,018
     Miscellaneous .......................................        88,326
                                                            ------------
       Total Expenses ....................................                 2,385,716
                                                                         -----------
NET INVESTMENT LOSS ......................................                (1,734,824)
REALIZED AND UNREALIZED GAIN (LOSS)
   ON INVESTMENTS AND WRITTEN OPTIONS:
Net realized loss on investments and written options .....   (16,156,497)
Net change in unrealized appreciation (depreciation)
   on investments and written options ....................    28,297,738
                                                            ------------
       Net realized and unrealized gain on investments
         and written options .............................                12,141,241
                                                                         -----------
NET INCREASE IN NET ASSETS RESULTING FROM
   OPERATIONS ............................................               $10,406,417
                                                                         ===========










                       See Notes to Financial Statements.
                                       9



SPECTRA FUND
STATEMENTS OF CHANGES IN NET ASSETS



                                                         SIX MONTHS
                                                        ENDED APRIL 30,  YEAR ENDED
                                                            2003         OCTOBER 31,
                                                         (UNAUDITED)        2002
                                                        ------------    ------------
                                                                  
Net investment loss .................................   $ (1,734,824)   $ (5,659,925)
Net realized loss on investments and written options     (16,156,497)   (108,707,361)
Net change in unrealized appreciation (depreciation)
   on investments and written options ...............     28,297,738      22,538,754
                                                        ------------    ------------
    Net increase (decrease) in net assets
       resulting from operations ....................     10,406,417     (91,828,532)
Increase (decrease) from shares of beneficial
   interest transactions:
  Class A ...........................................      1,559,618      (3,547,428)
  Class N ...........................................    (23,648,219)    (82,092,519)
                                                        ------------    ------------
Net decrease from shares of beneficial
   interest transactions--Note 5 ....................    (22,088,601)    (85,639,947)
                                                        ------------    ------------
      Total decrease in net assets ..................    (11,682,184)   (177,468,479)
Net assets:
  Beginning of period ...............................    259,342,265     436,810,744
                                                        ------------    ------------
  End of period (including accumulated net investment
     losses of $1,734,824 and $0, respectively) .....   $247,660,081    $259,342,265
                                                        ============    ============













                       See Notes to Financial Statements.
                                       10



SPECTRA FUND
NOTES TO FINANCIAL STATEMENTS (UNAUDITED)

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.
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 and unlisted 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.

(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.  (D) OPTION WRITING: When the Fund writes an option, an
amount equal to the premium  received by the Fund is recorded as a liability and
is  subsequently  adjusted  to the  current  fair value of the  option  written.
Premiums  received from writing  options that expire  unexercised are treated by
the  Fund on the  expiration  date  as  realized  gains  from  investments.  The
difference  between  the  premium  and the amount  paid on  effecting  a closing
purchase  transaction,  including  brokerage  commissions,  is also treated as a
realized gain, or,

                                       11



SPECTRA FUND
NOTES TO FINANCIAL STATEMENTS (UNAUDITED) (CONTINUED)

if  the  premium  is  less  than  the  amount  paid  for  the  closing  purchase
transaction,  as a realized loss. If a call option is exercised,  the premium is
added to the proceeds from the sale of the  underlying  security in  determining
whether the Fund has realized a gain or loss. If a put option is exercised,  the
premium  reduces the cost basis of the  securities  purchased  by the Fund.  The
Fund, as writer of an option,  bears the market risk of an unfavorable change in
the price of the security underlying the written option.

(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 exceed one third of the Fund's total  assets,  as defined.  The Fund
earns fees on the securities  loaned,  which are included in interest  income in
the accompanying  Statement of Operations.  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.  At April 30,  2003,  the value of  securities  loaned  and
collateral received thereon were $21,402,884 and $22,446,362, respectively.

(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  paid-in  capital,
depending on the type of book/tax differences that may exist.

At October 31, 2002, the Fund  reclassified  $32,532,564 from  undistributed net
investment  income  (accumulated  loss) and $6,317,887  from  undistributed  net
realized gain (accumulated  loss) to paid-in capital.  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

                                       12


SPECTRA FUND
NOTES TO FINANCIAL STATEMENTS (UNAUDITED) (CONTINUED)

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. At October 31, 2002, the net capital loss carryforward of
the Fund which may be used to offset future net realized gains was approximately
$329,341,924  and  expires  in 2009 and  2010.

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

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, serves as transfer agent for the Fund. During the
six  months  ended  April 30,  2003,  the Fund  incurred  fees of  approximately
$141,000 for services  provided by Alger Services and reimbursed  Alger Services
approximately  $6,000 for transfer agent related expenses paid by Alger Services
on behalf of the Fund.

(c) BROKERAGE  COMMISSIONS--During the six months ended April 30, 2003, the Fund
paid Fred Alger & Company,  Incorporated  ("Alger Inc."),  an affiliate of Alger
Management,  $514,209 in connection with securities transactions.

(d) 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.

(e)  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.

NOTE 3--SECURITIES TRANSACTIONS:

(a)  During  the six  months  ended  April  30,  2003,  purchases  and  sales of
investment securities, excluding short-term securities,  aggregated $233,289,512
and  $227,854,467,  respectively.

                                       13


SPECTRA FUND
NOTES TO FINANCIAL STATEMENTS (UNAUDITED) (CONTINUED)

(b) Transactions in options during the six months ended April 30, 2003, were
as follows:
                                                       NUMBER OF    PREMIUMS
                                                       CONTRACTS    RECEIVED
                                                       --------     ---------
Call options outstanding at October 31, 2002 ........      750      $ 165,995
Call options written ................................      250         39,249
Call options expired or exercised ...................   (1,000)      (205,244)
                                                        ------      ---------
Call options outstanding at April 30, 2003 ..........       --      $      --
                                                        ======      =========

NOTE 4--LINES OF CREDIT:

      The Fund has both  committed and  uncommitted  lines of credit with banks.
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 six months  ended
April 30, 2003, the Fund had no such borrowings.

NOTE 5--SHARE CAPITAL:

      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 six months  ended  April 30,  2003,  transactions  of shares of
beneficial interest were as follows:

CLASS A:                                           SHARES            AMOUNT
                                                   ------            ------
Shares sold ..................................   16,160,451       $ 76,226,546
Shares redeemed ..............................  (15,719,275)       (74,666,928)
                                                -----------       ------------
Net increase .................................      441,176       $  1,559,618
                                                ===========       ============

CLASS N:                                           SHARES             AMOUNT
                                                   ------              ------
Shares sold ..................................    3,891,369      $ 18,360,417
Shares redeemed ..............................   (9,113,672)       (42,008,636)
                                                -----------       ------------
Net decrease .................................   (5,222,303)      $(23,648,219)
                                                ===========       ============










SPECTRA FUND
NOTES TO FINANCIAL STATEMENTS (UNAUDITED) (CONTINUED)

      During  the year  ended  October  31,  2002,  transactions  of  shares  of
beneficial interest were as follows:

CLASS A:                                            SHARES           AMOUNT
                                                    ------           ------
Shares sold ...................................     1,935,985      $ 12,909,732
Shares redeemed ...............................    (2,572,315)      (16,457,160)
                                                  -----------      ------------
Net decrease ..................................      (636,330)     $ (3,547,428)
                                                  ===========      ============

CLASS N:                                            SHARES           AMOUNT
                                                    ------           ------
Shares sold ...................................    16,557,995      $103,432,444
Shares redeemed ...............................   (30,560,799)     (185,524,963)
                                                  -----------      ------------
Net decrease ..................................   (14,002,804)     $(82,092,519)
                                                  ===========      ============

NOTE 6--DISTRIBUTIONS TO SHAREHOLDERS:

      During the six months ended April 30, 2003 and the year ended  October 31,
2002, there were no distributions paid.

      As of October 31, 2002, the components of distributable  earnings on a tax
basis were as follows:

Undistributed ordinary income ................................... $          --
Undistributed long-term gain .................................... $          --
Capital loss carryforward ....................................... $(329,341,924)
Unrealized appreciation
  (depreciation) ................................................ $ (11,231,053)

      The difference  between book basis and tax-basis  unrealized  appreciation
(depreciation)  is attributable  primarily to the tax deferral of losses on wash
sales.







                                       15







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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
Alger Shareholder Services, Inc.
30 Montgomery Street
Jersey City, NJ 07302

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.





                                                             ----------------
                                                                PRESORTED
                                                                 STANDARD
                                                                US POSTAGE
                                                                   PAID
                                                             FARMINGDALE, NY
                                                              PERMIT NO. 225
                                                             ----------------





SAS L2




Item 2. CODE OF ETHICS

Not applicable.

Item 3. AUDIT COMMITTEE FINANCIAL EXPERT

Not applicable.

Item 4. PRINCIPAL ACCOUNTANT FEES AND SERVICES

Not applicable.

Item 5. AUDIT COMMITTEE OF LISTED REGISTRANTS

Not applicable.

Item 6. Reserved

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

Not applicable.

Item 8. Reserved

Item 9. 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-2(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) In the last 90 days, there have been no significant changes in the
registrant's internal controls or in other factors that could significantly
affect these controls.

Item 10. EXHIBITS

(a) Not applicable.

(b) Attached hereto

     Exhibit 99.CERT       Certification pursuant to Section 302 of the
                           Sarbanes-Oxley Act of 2002

     Exhibit 99.906CERT    Certification pursuant to Section 906 of the
                           Sarbanes-Oxley Act of 2002




                                   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/Fred M. Alger
         Fred M. Alger
         Chairman and President
Date:    July 8, 2003


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/ Fred M. Alger
         Fred M. Alger
         Chairman and President
Date:    July 8, 2003

By:      /s/ Gregory S. Duch
         Gregory S. Duch
         Treasurer
Date:    July 8, 2003