<PAGE> PAGE 1
000 A000000 01/31/99
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
007 C010100 1
007 C010200 2
007 C010300 3
007 C010400 4
007 C010500 5
007 C010600 6
007 C010700 7
007 C010800 8
007 C010900 9
007 C011000 10
018 000000 Y
019 A000000 Y
019 B000000 3
019 C000000 DOMINISOCI
020 A000001 BEAR STEARNS XO.
020 B000001 13-3299429
020 C000001 37
020 A000002 FIDELITY CAPITAL MARKETS
020 C000002 9
020 A000003 MORGAN STANLEY
020 B000003 13-2655998
020 C000003 8
020 A000004 STATE STREET BROKER SERVICES
020 C000004 19
020 A000005 SMITH BARNEY
020 C000005 12
020 A000006 CAPITAL INST. SERV
020 B000006 75-1565705
<PAGE> PAGE 2
020 C000006 19
020 A000007 TROSTER SINGER CORP
020 C000007 7
020 A000008 MONTGOMERY SECURITIES
020 C000008 7
020 A000009 NATIONAL FINANCIAL SERVICES
020 C000009 6
020 A000010 PERSHING DIV OF DLJ
020 C000010 5
021 000000 134
022 A000001 BEAR STERNS
022 B000001 13-3299429
022 C000001 11857
022 D000001 0
022 A000002 KNIGHT SECURITIES
022 C000002 13353
022 D000002 116
022 A000003 MORGAN STANLEY
022 B000003 13-2655998
022 C000003 1391
022 D000003 0
022 A000004 STATE STREET BROKER SERVICES
022 C000004 31
022 D000004 0
022 A000005 LEHMAN BROS.
022 C000005 334
022 D000005 0
022 A000006 SMITH BARNEY
022 B000006 13-1912900
022 C000006 3182
022 D000006 5957
022 C000007 0
022 D000007 0
022 C000008 0
022 D000008 0
022 C000009 0
022 D000009 0
022 C000010 0
022 D000010 0
023 C000000 38453
023 D000000 16015
024 000000 Y
025 A000001 A.G.EDWARDS INC.
025 C000001 E
025 D000001 514
025 A000002 MERRILL LYNCH
025 C000002 E
025 D000002 4552
025 A000003 CHARLES SCHWAB
025 C000003 E
025 D000003 4760
<PAGE> PAGE 3
025 D000004 0
025 D000005 0
025 D000006 0
025 D000007 0
025 D000008 0
026 A000000 N
026 B000000 Y
026 C000000 N
026 D000000 Y
026 E000000 N
026 F000000 N
026 G010000 N
026 G020000 N
026 H000000 N
027 000000 Y
028 A010000 26675
028 A020000 0
028 A030000 0
028 A040000 8
028 B010000 22524
028 B020000 0
028 B030000 0
028 B040000 0
028 C010000 16391
028 C020000 0
028 C030000 0
028 C040000 3633
028 D010000 42387
028 D020000 0
028 D030000 0
028 D040000 524
028 E010000 26773
028 E020000 0
028 E030000 0
028 E040000 426
028 F010000 41600
028 F020000 0
028 F030000 0
028 F040000 1532
028 G010000 176350
028 G020000 0
028 G030000 0
028 G040000 6123
028 H000000 0
029 000000 N
030 A000000 0
030 B000000 0.00
030 C000000 0.00
031 A000000 0
031 B000000 0
032 000000 0
<PAGE> PAGE 4
033 000000 0
034 000000 N
035 000000 0
036 B000000 0
037 000000 N
038 000000 0
039 000000 N
040 000000 N
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
048 000000 0.000
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
048 I020000 0.000
048 J010000 0
048 J020000 0.000
048 K010000 0
048 K020000 0.000
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
<PAGE> PAGE 5
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 B000000 N
066 C000000 N
066 D000000 Y
066 E000000 N
066 F000000 N
066 G000000 N
071 A000000 227917
071 B000000 56957
071 C000000 735373
071 D000000 8
072 A000000 6
072 B000000 0
072 C000000 4134
072 D000000 0
072 E000000 0
072 F000000 732
072 G000000 0
072 H000000 0
072 I000000 0
072 J000000 152
072 K000000 0
072 L000000 3
072 M000000 2
072 N000000 0
072 O000000 0
072 P000000 0
072 Q000000 0
072 R000000 19
072 S000000 21
072 T000000 0
072 U000000 0
072 V000000 0
072 W000000 0
072 X000000 929
072 Y000000 200
072 Z000000 3403
072AA000000 9478
072BB000000 0
072CC010000 147378
072CC020000 0
<PAGE> PAGE 6
072DD010000 0
072DD020000 0
072EE000000 0
073 A010000 0.0000
073 A020000 0.0000
073 B000000 0.0000
073 C000000 0.0000
074 A000000 9651
074 B000000 0
074 C000000 0
074 D000000 0
074 E000000 0
074 F000000 969818
074 G000000 0
074 H000000 0
074 I000000 0
074 J000000 0
074 K000000 0
074 L000000 0
074 M000000 861
074 N000000 980330
074 O000000 7263
074 P000000 0
074 Q000000 0
074 R010000 0
074 R020000 0
074 R030000 0
074 R040000 346
074 S000000 0
074 T000000 972721
074 U010000 0
074 U020000 0
074 V010000 0.00
074 V020000 0.00
074 W000000 0.0000
074 X000000 5
074 Y000000 0
075 A000000 0
075 B000000 736390
076 000000 0.00
077 A000000 N
SIGNATURE CAROLE LAIBLE
TITLE
<TABLE> <S> <C>
<ARTICLE> 6
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> JUL-31-1999
<PERIOD-END> JAN-31-1999
<INVESTMENTS-AT-COST> 646,719,849
<INVESTMENTS-AT-VALUE> 969,818,253
<RECEIVABLES> 9,651,113
<ASSETS-OTHER> 860,644
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 980,330,010
<PAYABLE-FOR-SECURITIES> 7,262,726
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 345,894
<TOTAL-LIABILITIES> 7,608,620
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 972,721,390
<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> 972,721,390
<DIVIDEND-INCOME> 4,133,933
<INTEREST-INCOME> 0
<OTHER-INCOME> 0
<EXPENSES-NET> 729,971
<NET-INVESTMENT-INCOME> 3,403,962
<REALIZED-GAINS-CURRENT> 9,477,670
<APPREC-INCREASE-CURRENT> 147,377,636
<NET-CHANGE-FROM-OPS> 160,259,268
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 0
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 176,349,371
<NUMBER-OF-SHARES-REDEEMED> (6,122,884)
<SHARES-REINVESTED> 0
<NET-CHANGE-IN-ASSETS> 330,485,755
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 0
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 732,324
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 928,797
<AVERAGE-NET-ASSETS> 736,389,615
<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> .20
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
