ALGER AMERICAN FUND
NSAR-B, 2000-02-29
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<PAGE>      PAGE  1
000 B000000 12/31/99
000 C000000 0000832566
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000 E000000 NF
000 F000000 Y
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000 I000000 3.0.a
000 J000000 U
001 A000000 ALGER AMERICAN FUND
001 B000000 811-5550
001 C000000 2128068800
002 A000000 1 WORLD TRADE CENTER
002 B000000 NEW YORK
002 C000000 NY
002 D010000 10048
003  000000 N
004  000000 N
005  000000 N
006  000000 N
007 A000000 Y
007 B000000  6
007 C010100  1
007 C010200  2
007 C020200 ALGER AMERICAN INCOME & GROWTH PORTFOLIO
007 C030200 N
007 C010300  3
007 C020300 ALGER AMERICAN SMALL CAPITALIZATION PORTFOLIO
007 C030300 N
007 C010400  4
007 C020400 ALGER AMERICAN GROWTH PORTFOLIO PORTFOLIO
007 C030400 N
007 C010500  5
007 C020500 ALGER AMERICAN BALANCED PORTFOLIO
007 C030500 N
007 C010600  6
007 C020600 ALGER AMERICAN MIDCAP GROWTH
007 C030600 N
007 C010700  7
007 C020700 ALGER AMERICAN LEVERAGED ALLCAP PORTFOLIO
007 C030700 N
007 C010800  8
007 C010900  9
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020 A000002 INSTINET CORP
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020 A000003 CANTOR FITZGERALD & CO.
<PAGE>      PAGE  2
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022 A000005 CREDIT SUISSE FIRST BOSTON
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022 C000005    276728
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022 A000006 PRUDENTIAL SECURITIES INC.
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<PAGE>      PAGE  3
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<PAGE>      PAGE  4
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<PAGE>      PAGE  7
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<PAGE>      PAGE  8
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<PAGE>      PAGE  9
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028 D020700         0
028 D030700         0
028 D040700      4202
028 E010700     30510
028 E020700         0
028 E030700         0
028 E040700      5623
028 F010700     31682
028 F020700         0
028 F030700         0
028 F040700     10358
028 G010700    121621
028 G020700         0
028 G030700         0
028 G040700     39336
028 H000700         0
055 A000700 N
055 B000700 N
056  000700 N
057  000700 N
062 A000700 N
062 B000700   0.0
062 C000700   0.0
062 D000700   0.0
062 E000700   0.0
062 F000700   0.0
062 G000700   0.0
062 H000700   0.0
062 I000700   0.0
062 J000700   0.0
<PAGE>      PAGE  19
062 K000700   0.0
062 L000700   0.0
062 M000700   0.0
062 N000700   0.0
062 O000700   0.0
062 P000700   0.0
062 Q000700   0.0
062 R000700   0.0
071 A000700    391438
071 B000700    283074
071 C000700    181762
071 D000700  156
072 A000700 12
072 B000700      396
072 C000700      412
072 D000700        0
072 E000700        0
072 F000700     1586
072 G000700        0
072 H000700        0
072 I000700       16
072 J000700       51
072 K000700        0
072 L000700       15
072 M000700        4
072 N000700       23
072 O000700        1
072 P000700       16
072 Q000700        0
072 R000700        9
072 S000700        5
072 T000700        0
072 U000700        0
072 V000700        0
072 W000700        3
072 X000700     1729
072 Y000700        0
072 Z000700     -921
072AA000700    62892
072BB000700    15780
072CC010700    80489
072CC020700        0
072DD010700        0
072DD020700        0
072EE000700    10216
073 A010700   0.0000
073 A020700   0.0000
073 B000700   2.7700
073 C000700   0.0000
074 A000700        0
074 B000700    10388
<PAGE>      PAGE  20
074 C000700     9984
074 D000700        0
074 E000700        0
074 F000700   334102
074 G000700        0
074 H000700        0
074 I000700        0
074 J000700    11493
074 K000700        0
074 L000700     1117
074 M000700        6
074 N000700   367090
074 O000700     3597
074 P000700        0
074 Q000700        0
074 R010700        0
074 R020700        0
074 R030700        0
074 R040700      993
074 S000700        0
074 T000700   362500
074 U010700  6253045
074 U020700        0
074 V010700    57.97
074 V020700     0.00
074 W000700   0.0000
074 X000700       30
074 Y000700        0
075 A000700        0
075 B000700   188829
076  000700     0.00
SIGNATURE   GREGORY S. DUCH
TITLE       TREASURER



                                     ARTHUR
                                    ANDERSEN

                                                     ---------------------------
                                                             Arthur Andersen LLP

                                                     ---------------------------
                                                     1345 Avenue of the Americas
                                                          New York NY 10105-0032


To the Shareholders and
Board of Trustees of The Alger American Fund:

In planning and  performing  our audit of the financial  statements of The Alger
American Fund for the year ended  December 31, 1999, we considered  its internal
control,  including control activities for safeguarding securities,  in order to
determine our auditing  procedures  for the purpose of expressing our opinion on
the financial  statements and to comply with the requirements of Form N-SAR, not
to provide assurance on internal control.

The management of The Alger American Fund is responsible  for  establishing  and
maintaining internal control. In fulfilling this  responsibility,  estimates and
judgments by management are required to assess the expected benefits and related
costs of controls.  Generally, controls that are relevant to an audit pertain to
the entity's objective of preparing  financial  statements for external purposes
that are fairly  presented in  conformity  with  generally  accepted  accounting
principles.   Those  controls   include  the   safeguarding  of  assets  against
unauthorized acquisition, use, or disposition.

Because of inherent  limitations in internal  control,  error or fraud may occur
and not be detected.  Also,  projection of any evaluation of internal control to
future periods is subject to the risk that it may become  inadequate  because of
changes in conditions or that the  effectiveness of the design and operation may
deteriorate.

Our consideration of internal control would not necessarily disclose all matters
in  internal   control  that  might  be  material   weaknesses  under  standards
established  by the  American  Institute  of  Certified  Public  Accountants.  A
material weakness is a condition in which the design or operation of one or more
of the internal control components does not reduce to a relatively low level the
risk  that  misstatements  caused  by error or fraud in  amounts  that  would be
material in relation to the financial statements being audited may occur and not
be  detected  within a timely  period  by  employees  in the  normal  course  of
performing  their assigned  functions.  However,  we noted no matters  involving
internal  control  and  its  operation,   including  controls  for  safeguarding
securities,  that we consider to be material  weaknesses  as defined above as of
December 31, 1999.

This report is intended solely for the  information  and use of management,  the
Board of Trustees of The Alger  American  Fund,  and the Securities and Exchange
Commission.

New York, New York
February 8, 2000

                                                          /S/Arthur Andersen LLP


<TABLE> <S> <C>


<ARTICLE> 6
<SERIES>
   <NUMBER> 5
   <NAME> ALGER AMERICAN BALANCED PORTFOLIO
<MULTIPLIER> 1

<S>                             <C>
<PERIOD-TYPE>                   12-MOS
<FISCAL-YEAR-END>                          DEC-31-1999
<PERIOD-END>                               DEC-31-1999
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<INVESTMENTS-AT-VALUE>                        56715834
<RECEIVABLES>                                   385287
<ASSETS-OTHER>                                    3162
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<EXPENSE-RATIO>                                    .93


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<TABLE> <S> <C>

<ARTICLE> 6
<SERIES>
   <NUMBER> 4
   <NAME> ALGER AMERICAN GROWTH PORTFOLIO
<MULTIPLIER> 1

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</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<SERIES>
   <NUMBER> 2
   <NAME> ALGER AMERICAN INCOME & GROWYH PORTFOLIO
<MULTIPLIER> 1

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<EXPENSE-RATIO>                                    .70


</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<SERIES>
   <NUMBER> 7
   <NAME> ALGER AMERICAN LEVERAGED ALL-CAP PORTFOLIO
<MULTIPLIER> 1

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<PERIOD-TYPE>                   12-MOS
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</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<SERIES>
   <NUMBER> 6
   <NAME> ALGER AMERICAN MID-CAP PORTFOLIO
<MULTIPLIER> 1

<S>                             <C>
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</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<SERIES>
   <NUMBER> 3
   <NAME> ALGER AMERICAN SMALL CAPITALIZATION PORTFOLIO
<MULTIPLIER> 1

<S>                             <C>
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</TABLE>


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