<PAGE> PAGE 1
000 A000000 01/31/98
000 C000000 0000851681
000 D000000 N
000 E000000 NF
000 F000000 Y
000 G000000 N
000 H000000 N
000 I000000 3.0
000 J000000 A
001 A000000 DOMINI SOCIAL INDEX PORTFOLIO
001 B000000 811-5824
001 C000000 2123529200
002 A000000 11 WEST 25TH STREET
002 B000000 NEW YORK
002 C000000 NY
002 D010000 10010
002 D020000 2001
003 000000 N
004 000000 N
005 000000 N
006 000000 N
007 A000000 N
007 B000000 0
008 A000001 DOMINI SOCIAL INVESTMENTS, LLC
008 B000001 A
008 C000001 801-54701
008 D010001 NEW YORK
008 D020001 NY
008 D030001 10010
008 D040001 2001
020 A000001 BEAR STEARNS & CO.
020 B000001 13-3299429
020 C000001 55
020 A000002 FIDELITY CAPITAL MARKETS
020 C000002 7
020 A000003 MORGAN STANLEY
020 B000003 13-2655998
020 C000003 2
020 A000004 INSTINET
020 B000004 13-3443395
020 C000004 1
020 A000005 GOLDMAN SACHS
020 B000005 13-2108880
020 C000005 1
020 A000006 CAPITAL INST SERV
020 B000006 75-1565705
020 C000006 5
020 A000007 SALOMON BROTHERS
020 C000007 2
020 C000008 0
020 C000009 0
<PAGE> PAGE 2
020 C000010 0
021 000000 73
022 A000001 BEAR STEARNS
022 B000001 13-3299429
022 C000001 13152
022 D000001 440
022 A000002 GOLDMAN SACHS
022 C000002 2284
022 D000002 0
022 A000003 MORGAN STANLEY
022 B000003 13-2655998
022 C000003 773
022 D000003 0
022 A000004 SALOMON BROS
022 C000004 513
022 D000004 0
022 A000005 LEHMAN BROS
022 C000005 106
022 D000005 230
022 A000006 MERRILL LYNCH
022 B000006 13-5674085
022 C000006 195
022 D000006 4
022 A000007 PRUDENTIAL SECURITIES
022 C000007 22
022 D000007 0
022 A000008 JEFFRIES & CO.
022 C000008 7
022 D000008 0
022 A000009 SMITH BARNEY
022 B000009 13-1912900
022 C000009 4
022 D000009 0
022 C000010 0
022 D000010 0
023 C000000 17056
023 D000000 674
027 000000 Y
028 A010000 11664
028 A020000 0
028 A030000 0
028 A040000 7
028 B010000 17707
028 B020000 0
028 B030000 0
028 B040000 456
028 C010000 11894
028 C020000 0
028 C030000 0
028 C040000 5079
028 D010000 24925
<PAGE> PAGE 3
028 D020000 0
028 D030000 0
028 D040000 0
028 E010000 9228
028 E020000 0
028 E030000 0
028 E040000 725
028 F010000 30310
028 F020000 0
028 F030000 0
028 F040000 3812
028 G010000 105728
028 G020000 0
028 G030000 0
028 G040000 10079
028 H000000 0
031 A000000 0
031 B000000 0
032 000000 0
033 000000 0
042 A000000 0
042 B000000 0
042 C000000 0
042 D000000 0
042 E000000 0
042 F000000 0
042 G000000 0
042 H000000 0
043 000000 0
044 000000 0
045 000000 Y
046 000000 N
047 000000 Y
048 000000 0.200
048 A010000 0
048 A020000 0.000
048 B010000 0
048 B020000 0.000
048 C010000 0
048 C020000 0.000
048 D010000 0
048 D020000 0.000
048 E010000 0
048 E020000 0.000
048 F010000 0
048 F020000 0.000
048 G010000 0
048 G020000 0.000
048 H010000 0
048 H020000 0.000
048 I010000 0
<PAGE> PAGE 4
048 I020000 0.000
048 J010000 0
048 J020000 0.000
048 K010000 0
048 K020000 0.000
049 000000 N
050 000000 N
051 000000 N
052 000000 Y
053 A000000 Y
053 B000000 Y
053 C000000 N
062 A000000 N
062 B000000 0.0
062 C000000 0.0
062 D000000 0.0
062 E000000 0.0
062 F000000 0.0
062 G000000 0.0
062 H000000 0.0
062 I000000 0.0
062 J000000 0.0
062 K000000 0.0
062 L000000 0.0
062 M000000 0.0
062 N000000 0.0
062 O000000 0.0
062 P000000 0.0
062 Q000000 0.0
062 R000000 0.0
063 A000000 0
063 B000000 0.0
066 A000000 Y
066 G000000 Y
071 A000000 104648
071 B000000 8581
071 C000000 336315
071 D000000 3
072 A000000 6
072 B000000 0
072 C000000 2276
072 D000000 0
072 E000000 0
072 F000000 386
072 G000000 0
072 H000000 0
072 I000000 0
072 J000000 65
072 K000000 0
072 L000000 0
072 M000000 1
<PAGE> PAGE 5
072 N000000 0
072 O000000 0
072 P000000 0
072 Q000000 0
072 R000000 5
072 S000000 44
072 T000000 0
072 U000000 0
072 V000000 0
072 W000000 2
072 X000000 503
072 Y000000 164
072 Z000000 1937
072AA000000 2842
072BB000000 0
072CC010000 112492
072CC020000 0
072DD010000 0
072DD020000 0
072EE000000 0
073 A010000 0.0000
073 A020000 0.0000
073 B000000 0.0000
073 C000000 0.0000
074 A000000 4193
074 B000000 0
074 C000000 0
074 D000000 0
074 E000000 0
074 F000000 408990
074 G000000 0
074 H000000 0
074 I000000 0
074 J000000 0
074 K000000 0
074 L000000 0
074 M000000 497
074 N000000 413680
074 O000000 1971
074 P000000 0
074 Q000000 0
074 R010000 0
074 R020000 0
074 R030000 0
074 R040000 219
074 S000000 0
074 T000000 411490
074 U010000 0
074 U020000 0
074 V010000 0.00
074 V020000 0.00
<PAGE> PAGE 6
074 W000000 0.0000
074 X000000 22
074 Y000000 0
075 A000000 0
075 B000000 338771
076 000000 0.00
077 A000000 N
SIGNATURE CAROLE M. LAIBLE
TITLE TREASURER
<TABLE> <S> <C>
<ARTICLE> 6
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> JAN-31-1998
<PERIOD-END> JAN-31-1998
<INVESTMENTS-AT-COST> 299,126,134
<INVESTMENTS-AT-VALUE> 408,990,469
<RECEIVABLES> 496,631
<ASSETS-OTHER> 4,192,809
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 413,679,909
<PAYABLE-FOR-SECURITIES> 1,971,177
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 218,706
<TOTAL-LIABILITIES> 2,189,883
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 411,490,026
<SHARES-COMMON-STOCK> 0
<SHARES-COMMON-PRIOR> 0
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 0
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 0
<NET-ASSETS> 411,490,026
<DIVIDEND-INCOME> 2,276,430
<INTEREST-INCOME> 0
<OTHER-INCOME> 0
<EXPENSES-NET> 339,047
<NET-INVESTMENT-INCOME> 1,937,383
<REALIZED-GAINS-CURRENT> 2,842,337
<APPREC-INCREASE-CURRENT> 18,702,927
<NET-CHANGE-FROM-OPS> 23,482,647
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 0
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 105,727,597
<NUMBER-OF-SHARES-REDEEMED> (10,079,189)
<SHARES-REINVESTED> 0
<NET-CHANGE-IN-ASSETS> 119,131,056
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 0
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 385,956
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 503,155
<AVERAGE-NET-ASSETS> 338,771,453
<PER-SHARE-NAV-BEGIN> 0
<PER-SHARE-NII> 0
<PER-SHARE-GAIN-APPREC> 0
<PER-SHARE-DIVIDEND> 0
<PER-SHARE-DISTRIBUTIONS> 0
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 0
<EXPENSE-RATIO> 1.13
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>