Domini Social Trust NCSR Certified annual shareholder report (management investment company)

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 811-5824

DOMINI SOCIAL INDEX PORTFOLIO
(Exact Name of Registrant as Specified in Charter)

536 Broadway, 7^th Floor, New York, New York 10012
(Address of Principal Executive Offices)

Amy L. Domini
Domini Social Investments LLC
536 Broadway, 7^th Floor
New York, New York 10012
(Name and Address of Agent for Service)

Registrant's Telephone Number, including Area Code: 212-217-1100

Date of Fiscal Year End: July 31

Date of Reporting Period: July 31, 2003

Item 1. Reports to Stockholders.

A copy of the report transmitted to stockholders pursuant to Rule 30e-1 under the Investment Company Act of 1940 follows.

Domini Social Index Portfolio
Portfolio of Investments

July 31, 2003


Issuer	Shares		Value
Consumer Discretionary — 13.6%
American Greetings Corporation (a)		15,700	$	279,617
AOL Time Warner, Inc. (a)		1,124,900		17,357,207
AutoZone, Inc. (a)		23,531		1,959,191
Bandag, Inc.		2,400		84,504
Bassett Furniture Industries		3,000		41,220
Black & Decker Corp.		20,700		845,802
Bob Evans Farms, Inc.		9,300		262,260
CDW Corporation		21,700		1,038,996
Centex Corporation		16,200		1,175,634
Champion Enterprises, Inc. (a)		12,800		83,072
Charming Shoppes, Inc. (a)		29,400		154,350
Circuit City Stores, Inc.		54,100		496,638
Claire's Stores, Inc.		11,900		324,870
Comcast Corporation (a)		356,658		10,813,871
Cooper Tire and Rubber Company		18,800		319,600
Costco Wholesale Corporation (a)		120,130		4,450,817
Cross (A.T.) Company (a)		3,800		19,874
Dana Corporation		38,400		591,360
Darden Restaurants, Inc.		44,200		826,982
Delphi Automotive Systems Corporation		146,800		1,233,120
Dillard's, Inc.		20,700		311,949
Disney (Walt) Company		537,300		11,777,616
Dollar General Corporation		87,651		1,612,778
Dow Jones & Company		16,000		677,280
eBay Inc. (a)		83,493		8,950,450
Emmis Communications Corporation (a)		12,200		244,122
Family Dollar Stores Inc.		45,000		1,687,950
Fleetwood Enterprises, Inc. (a)		9,300		83,514
Foot Locker, Inc.		36,300		543,048
Gaiam, Inc. (a)		2,200		11,044
Gap, Inc. (The)		232,287		4,178,843
Harley-Davidson, Inc.		79,400		3,722,272
Harman International Industries, Inc.		8,360		698,896
Hartmarx Corporation (a)		8,500		27,030
Home Depot, Inc. (The)		604,206		18,851,227
Horton (D.R.), Inc.		38,200		1,075,330
Ikon Office Solutions		38,800		278,584
Johnson Controls, Inc.		23,400		2,260,674
KB Home		12,400		701,964
Lee Enterprises, Inc.		8,800		326,744
Leggett & Platt, Incorporated		51,200		1,133,568
Limited Brands		137,000		2,289,270
Liz Claiborne, Inc.		28,100		967,483
Lowe's Companies, Inc.		204,900		9,745,044
Luby's, Inc. (a)		5,800		15,022
Mattel, Inc.		114,385		2,222,501
May Department Stores Company		75,800		1,873,018
Maytag Corporation		20,100		511,545
McDonald's Corporation		331,600		7,630,116
McGraw-Hill Companies		49,600		3,014,688
Media General, Inc.		5,800		334,544
Men's Wearhouse, Inc. (a)		10,600		268,286
Meredith Corporation		10,200		463,896
Modine Manufacturing Company		8,700		184,788
New York Times Company		39,600		1,766,160
Newell Rubbermaid, Inc.		71,478		1,689,025
Nordstrom, Inc.		34,800		734,628
Omnicom Group, Inc.		49,400		3,649,672
Oneida Ltd.		4,300		26,273
Oshkosh B'Gosh, Inc.		2,700		69,120
Penney (J.C.) Company, Inc.		70,400		1,308,032
Pep Boys -- Manny, Moe & Jack		14,000		217,140
Phillips-Van Heusen Corporation		7,200		103,536
Pixar (a)		13,500		915,300
Pulte Homes, Inc.		15,800		965,696
Radio One, Inc. (a)		5,800		97,562
RadioShack Corporation		44,300		1,177,051
Reebok International Ltd.		15,800		519,820
Ruby Tuesday, Inc.		16,700		380,092
Russell Corporation		8,300		165,253

-1-

Domini Social Index Portfolio / Portfolio of Investments (Continued)
July 31, 2003


Issuer	Shares		Value
Consumer Discretionary (Continued)
Scholastic Corporation (a)		9,700	$	282,949
Sears, Roebuck and Co.		79,800		3,247,860
Snap-On Incorporated		15,050		426,216
SPX Corporation (a)		20,830		980,885
Stanley Works		23,200		657,256
Staples, Inc. (a)		128,023		2,578,383
Starbucks Corporation (a)		101,900		2,784,927
Stride Rite Corporation		10,800		108,216
Target Corporation		239,000		9,158,480
Timberland Company (The) (a)		7,500		336,150
TJX Companies, Inc.		133,600		2,598,520
Toys 'R' Us, Inc. (a)		55,820		622,393
Tribune Company		81,256		3,836,908
Tupperware Corporation		15,000		232,650
Univision Communications, Inc. (a)		42,000		1,310,400
Valassis Communications Inc. (a)		13,600		385,016
VF Corporation		28,600		1,090,518
Visteon Corporation		34,000		215,220
Washington Post Company		2,000		1,352,000
Wendy's International, Inc.		29,800		875,822
Whirlpool Corporation		17,600		1,140,127
				179,039,325

Consumer Staples — 11.9%
Alberto-Culver Company		8,400		467,292
Albertson's, Inc.		95,200		1,795,472
Avon Products, Inc.		61,800		3,855,702
Campbell Soup Company		107,700		2,600,955
Church & Dwight Co., Inc.		10,300		333,720
Clorox Company		57,500		2,494,925
Coca-Cola Company		645,900		29,046,123
Colgate-Palmolive Company		141,800		7,742,280
CVS Corporation		103,200		3,094,968
Estée Lauder Companies, Inc. (The)		32,300		1,205,759
General Mills Incorporated		96,600		4,431,042
Gillette Company		268,538		8,260,229
Green Mountain Coffee, Inc. (a)		1,800		35,388
Hain Celestial Group, Inc. (The) (a)		8,700		142,680
Heinz (H.J.) Company		92,900		3,164,174
Hershey Foods Corporation		26,600		1,936,746
Horizon Organic Holding Corporation (a)		2,600		61,776
Kellogg Company		107,300		3,683,609
Kimberly-Clark Corporation		133,064		6,440,298
Kroger Company (a)		199,900		3,388,305
Longs Drug Stores Corporation		9,900		193,347
Nature's Sunshine Products, Inc.		4,200		33,600
PepsiAmericas, Inc.		39,000		523,380
PepsiCo, Inc.		450,370		20,748,546
Procter & Gamble Company		339,000		29,787,930
Safeway Inc. (a)		115,900		2,474,465
Smucker (J.M.) Company		12,905		516,716
SUPERVALU, Inc.		34,400		810,120
Sysco Corporation		170,300		5,131,139
Tootsie Roll Industries, Inc.		9,368		284,881
United Natural Foods, Inc. (a)		5,000		152,850
Walgreen Company		269,800		8,072,416
Whole Foods Market, Inc. (a)		15,400		785,030
Wild Oats Markets, Inc. (a)		6,550		69,234
Wrigley (Wm.) Jr. Company		48,100		2,611,348
				156,376,445

Energy — 1.0%
Anadarko Petroleum Corporation		65,285		2,859,483
Apache Corporation		42,012		2,603,064
Cooper Cameron Corp. (a)		14,100		674,121
Devon Energy Corporation		60,172		2,850,348
EOG Resources, Inc.		29,800		1,155,644
Equitable Resources, Inc.		16,100		621,943
Helmerich & Payne, Inc.		13,000		347,750
Noble Energy, Inc.		14,700		536,550
Rowan Companies, Inc. (a)		24,200		531,190
Sunoco, Inc.		19,800		732,599
				12,912,692

Financials — 25.4%
AFLAC, Inc.		135,600		4,350,048
Allied Capital Corporation		28,700		675,885

-2-

Domini Social Index Portfolio / Portfolio of Investments (Continued)
July 31, 2003


Issuer	Shares		Value
Financials (Continued)
American Express Company		343,400	$	15,167,978
American International Group, Inc.		684,176		43,924,099
AmSouth Bancorporation		93,400		2,023,978
Aon Corporation		81,500		1,960,075
Bank of America Corporation		392,500		32,408,725
Bank One Corporation		305,285		12,077,075
Capital One Financial Corporation		60,100		2,879,391
Cathay Bancorp, Inc.		4,700		228,185
Charter One Financial, Inc.		59,410		1,932,013
Chittenden Corporation		8,376		244,579
Chubb Corporation		45,400		2,941,920
Cincinnati Financial Corporation		42,285		1,661,801
Comerica Incorporated		45,900		2,225,232
Edwards (A.G.), Inc.		20,987		776,309
Fannie Mae		257,665		16,500,867
Fifth Third Bancorp		151,011		8,307,115
First Tennessee National Corporation		33,000		1,415,700
FirstFed Financial Corp. (a)		4,500		170,550
Franklin Resources, Inc.		65,900		2,863,355
Freddie Mac		182,700		8,924,895
Golden West Financial		39,700		3,279,220
GreenPoint Financial Corporation		24,000		1,206,240
Hartford Financial Services Group (The)		66,600		3,475,854
Janus Capital Group Inc.		62,926		1,101,205
Jefferson-Pilot Corporation		37,725		1,659,900
KeyCorp		112,300		3,021,993
Lincoln National Corporation		46,500		1,736,310
Marsh & McLennan Companies, Inc.		141,200		7,006,344
MBIA, Inc.		38,100		1,928,622
MBNA Corporation		336,975		7,511,173
Mellon Financial Corporation		113,200		3,424,300
Merrill Lynch & Co., Inc.		243,760		13,253,231
MGIC Investment Corporation		26,400		1,465,200
Moody's Corporation		38,500		1,991,220
Morgan (J.P.) Chase & Co.		533,792		18,709,410
National City Corporation		161,300		5,314,835
Northern Trust Corporation		58,100		2,536,646
PNC Financial Services Group		74,700		3,656,565
Progressive Corporation (The)		57,200		3,771,768
Providian Financial Corporation (a)		76,000		733,400
Rouse Company		22,500		899,775
SAFECO Corporation		36,000		1,340,280
Schwab (Charles) Corporation		353,100		3,675,771
SLM Corporation		121,500		5,037,390
St. Paul Companies, Inc.		59,464		2,091,349
State Street Corporation		87,300		4,007,070
SunTrust Banks, Inc.		73,100		4,451,790
Synovus Financial Corporation		80,050		1,883,577
U.S. Bancorp		503,821		12,353,691
UnumProvident Corporation		75,300		1,022,574
Value Line, Inc.		2,600		133,770
Wachovia Corporation		353,743		15,455,032
Washington Mutual, Inc.		243,804		9,625,382
Wells Fargo & Company		439,106		22,188,026
Wesco Financial Corporation		1,900		604,199
				335,212,887

Health Care — 12.6%
Allergan, Inc.		35,305		2,841,346
Amgen, Inc. (a)		335,100		23,316,258
Bard (C.R.), Inc.		13,400		918,704
Bausch & Lomb Incorporated		14,000		591,780
Baxter International, Inc.		157,000		4,334,770
Becton Dickinson and Company		67,500		2,472,525
Biogen, Inc. (a)		39,000		1,498,380
Biomet, Inc.		68,100		2,016,441
Boston Scientific Corporation (a)		107,300		6,784,579
CIGNA Corporation		36,600		1,712,148
Forest Laboratories, Inc. (a)		94,800		4,539,024
Guidant Corporation		81,338		3,840,780
Hillenbrand Industries, Inc.		15,900		866,391
Humana, Inc. (a)		42,900		751,608
Invacare Corporation		7,700		270,270
Invitrogen Corporation (a)		13,400		694,120
Johnson & Johnson		778,670		40,327,319
King Pharmaceuticals Inc. (a)		62,500		941,250
Manor Care, Inc.		25,000		712,500

-3-

Domini Social Index Portfolio / Portfolio of Investments (Continued)
July 31, 2003


Issuer	Shares		Value
Health Care (Continued)
McKesson HBOC, Inc.		77,020	$	2,484,665
MedImmune, Inc. (a)		66,500		2,606,135
Medtronic, Inc.		319,500		16,454,250
Merck & Co., Inc.		588,100		32,510,168
Mylan Laboratories, Inc.		48,250		1,629,403
Oxford Health Plans, Inc. (a)		22,700		969,290
Quintiles Transnational Corp. (a)		30,400		418,000
St. Jude Medical, Inc. (a)		46,700		2,505,455
Stryker Corporation		52,200		3,994,344
Watson Pharmaceuticals (a)		27,700		1,106,338
Zimmer Holdings, Inc. (a)		51,300		2,452,654
				166,560,895

Industrials — 6.8%
3M Company		102,600		14,384,520
Airborne, Inc.		12,500		281,750
Alaska Air Group, Inc. (a)		6,900		168,774
American Power Conversion		50,600		881,958
AMR Corporation (a)		39,900		373,065
Angelica Corporation		2,200		41,910
Apogee Enterprises, Inc.		7,400		75,702
Ault, Inc. (a)		1,200		2,748
Automatic Data Processing, Inc.		157,974		5,857,676
Avery Dennison Corporation		28,900		1,559,444
Baldor Electric Company		8,800		182,600
Banta Corporation		6,550		221,652
Brady Corporation		5,500		189,255
Bright Horizons Family Solutions, Inc. (a)		3,200		116,800
Ceridian Corporation (a)		39,000		727,350
Cintas Corporation		44,300		1,832,248
CLARCOR, Inc.		6,450		259,484
Cooper Industries, Inc.		23,900		1,059,487
CPI Corporation		2,100		35,868
Cross Country Healthcare, Inc. (a)		8,600		128,914
Cummins, Inc.		10,700		495,731
Deere & Company		62,600		3,178,828
Delta Air Lines, Inc.		32,000		380,800
Deluxe Corporation		13,900		617,160
DeVry, Inc. (a)		18,100		462,274
Dionex Corporation (a)		5,600		228,256
Donaldson Company, Inc.		11,300		550,875
Donnelley (R.R.) & Sons Company		29,300		775,278
Ecolab, Inc.		68,200		1,685,222
Emerson Electric Company		111,000		5,960,700
Fastenal Company		19,700		748,600
FedEx Corporation		78,200		5,035,298
GATX Corporation		12,600		276,192
Genuine Parts Company		45,700		1,413,958
Graco, Inc.		12,368		450,814
Grainger (W.W.), Inc.		24,000		1,180,800
Granite Construction Incorporated		10,625		190,931
Harland (John H.) Company		7,600		200,640
Herman Miller, Inc.		19,300		426,723
HON Industries Inc.		15,200		505,552
Hubbell Incorporated		12,660		434,238
Illinois Tool Works, Inc.		80,800		5,627,720
IMCO Recycling, Inc. (a)		3,800		27,436
IMS Health, Inc.		63,313		1,224,473
Interface, Inc. (a)		11,400		60,192
Ionics, Inc. (a)		4,500		103,095
Isco, Inc.		1,500		12,300
JetBlue Airways Corporation (a)		16,800		765,408
Kansas City Southern Industries, Inc. (a)		15,700		190,755
Kelly Services, Inc.		8,475		217,469
Lawson Products, Inc.		2,500		68,900
Lincoln Electric Holdings, Inc.		11,000		249,480
Masco Corporation		124,000		3,021,880
Merix Corporation (a)		3,750		39,938
Milacron, Inc.		8,700		34,800
Molex Incorporated		25,646		716,036
New England Business Service, Inc.		3,400		99,790
Nordson Corporation		8,600		207,776
Norfolk Southern Corporation		103,200		1,984,536
Paychex, Inc.		98,800		3,213,964
Pitney Bowes, Inc.		60,800		2,316,480
Roadway Express, Inc.		5,000		238,400
Robert Half International, Inc. (a)		44,800		972,608
Ryder System, Inc.		16,100		467,866

-4-

Domini Social Index Portfolio / Portfolio of Investments (Continued)
July 31, 2003


Issuer	Shares		Value
Industrials (Continued)
Smith (A.O.) Corporation		5,200	$	173,732
Southwest Airlines Co.		203,162		3,333,888
Spartan Motors, Inc.		3,100		26,412
Standard Register Company		6,000		107,700
Steelcase, Inc.		9,900		117,315
Tennant Company		2,300		86,250
Thermo Electron Corporation (a)		41,200		916,700
Thomas & Betts Corporation (a)		15,100		230,426
Thomas Industries, Inc.		4,000		106,400
Toro Company		6,400		255,872
United Parcel Service, Inc.		135,033		8,517,882
Yellow Corporation (a)		7,500		204,449
				89,518,403

Information Technology — 20.5%
3Com Corporation (a)		95,000		463,600
Adaptec, Inc. (a)		27,400		185,498
ADC Telecommunications, Inc. (a)		206,300		449,734
Advanced Micro Devices, Inc. (a)		88,300		644,590
Advent Software, Inc. (a)		8,500		137,700
Analog Devices, Inc. (a)		96,400		3,658,380
Andrew Corporation (a)		39,800		433,422
Apple Computer, Inc. (a)		94,300		1,985,015
Applied Materials, Inc. (a)		433,700		8,457,150
Arrow Electronics, Inc. (a)		25,900		441,595
Autodesk, Inc.		29,200		436,832
BMC Software, Inc. (a)		60,800		857,280
Borland Software Corporation (a)		21,100		196,230
Cisco Systems, Inc. (a)		1,840,730		35,931,050
Compuware Corporation (a)		99,400		511,910
Dell Inc. (a)		673,300		22,676,744
Electronic Arts Inc. (a)		37,600		3,158,400
Electronic Data Systems Corporation		125,200		2,788,204
EMC Corporation (a)		571,600		6,081,824
Gerber Scientific, Inc. (a)		5,700		48,279
Hewlett-Packard Company		799,710		16,929,861
Hutchinson Technology Incorporated (a)		6,500		186,680
Imation Corporation		9,100		324,779
Intel Corporation		1,713,800		42,759,310
Lexmark International Group, Inc. (a)		33,100		2,124,027
LSI Logic Corporation (a)		97,800		910,518
Lucent Technologies, Inc. (a)		1,065,692		1,875,618
Micron Technology, Inc. (a)		158,700		2,323,368
Microsoft Corporation (a)		2,805,500		74,065,200
Millipore Corporation (a)		12,400		551,676
National Semiconductor Corporation (a)		47,600		1,063,860
Novell, Inc. (a)		93,600		332,280
Palm, Inc. (a)		7,504		120,439
PeopleSoft, Inc. (a)		96,800		1,613,656
Plantronics Inc (a)		11,600		281,184
QRS Corporation (a)		4,100		30,545
Qualcomm, Inc.		206,800		7,746,728
Sapient Corporation (a)		32,800		117,424
Scientific-Atlanta, Inc.		39,900		1,208,571
Solectron Corporation (a)		213,800		1,092,518
Sun Microsystems, Inc. (a)		839,800		3,140,852
Symantec Corporation (a)		37,400		1,749,198
Tektronix, Inc. (a)		22,600		477,538
Tellabs, Inc. (a)		106,000		713,380
Texas Instruments, Inc.		455,700		8,599,059
Waters Corporation (a)		33,400		1,059,114
Xerox Corporation (a)		193,200		2,086,560
Xilinx, Inc. (a)		88,600		2,328,408
Yahoo! Inc. (a)		158,630		4,938,151
				270,293,939

Materials — 1.3%
Air Products & Chemicals, Inc.		60,200		2,798,096
Airgas, Inc.		18,500		359,640
Bemis Company, Inc.		13,700		612,253
Cabot Corporation		16,000		436,480
Calgon Carbon Corporation		10,100		65,145
Caraustar Industries, Inc. (a)		7,200		64,512
Crown Holdings, Inc. (a)		41,600		310,752
Engelhard Corporation		33,200		872,496
Fuller (H.B.) Company		7,300		177,098
Lubrizol Corporation		13,300		444,087
MeadWestvaco Corp.		52,612		1,273,737

-5-

Domini Social Index Portfolio / Portfolio of Investments (Continued)
July 31, 2003


Issuer	Shares		Value
Materials (Continued)
Minerals Technologies, Inc.		5,300	$	264,735
Nucor Corporation		20,150		993,798
Praxair, Inc.		42,200		2,728,652
Rock-Tenn Company		9,000		141,300
Rohm & Haas Company		58,387		2,065,148
Sealed Air Corporation (a)		21,700		1,035,741
Sigma-Aldrich Corporation		18,600		1,059,642
Sonoco Products Company		24,745		564,186
Stillwater Mining Company (a)		11,200		61,040
Trex Company, Inc. (a)		3,700		135,050
Valspar Corporation		13,100		572,732
Wellman, Inc.		8,200		79,868
Worthington Industries, Inc.		22,200		326,340
				17,442,528

Telecommunication Services — 5.5%
AT&T Corp.		207,016		4,401,160
AT&T Wireless Services, Inc. (a)		711,487		6,068,984
BellSouth Corporation		483,700		12,319,839
Citizens Communications Company (a)		72,767		862,289
SBC Communications, Inc.		870,428		20,333,198
Sprint Corp – FON Group		234,700		3,313,964
Telephone and Data Systems, Inc.		13,500		720,495
Verizon Communications		715,422		24,939,611
				72,959,540

Utilities — 0.8%
AGL Resources, Inc.		16,600		455,172
Cascade Natural Gas Corporation		2,900		56,115
Cleco Corporation		12,200		195,200
Energen Corporation		8,900		308,830
IDACORP, Inc.		9,700		263,355
KeySpan Corporation		41,000		1,383,750
Kinder Morgan, Inc.		32,000		1,712,000
MGE Energy, Inc.		4,400		137,852
National Fuel Gas Company		20,500		495,895
NICOR, Inc.		11,400		413,592
NiSource, Inc.		69,047		1,332,607
Northwest Natural Gas Company		6,500		185,055
Northwestern Corporation (a)		7,100		7,668
OGE Energy Corporation		20,200		402,384
Peoples Energy Corporation		9,200		377,108
Pepco Holdings, Inc.		44,400		769,008
Questar Corporation		21,200		677,340
Southern Union Company (a)		14,944		230,297
WGL Holdings		12,600		321,426
Williams Companies, Inc.		134,200		852,170
				10,576,824
Total Investments — 99.4%
(cost $1,415,797,322) (b)			$	1,310,893,478
Other Assets, less liabilities — 0.6%				7,449,179
Net Assets — 100.0%			$	1,318,342,657

(a)	Non–income producing security.

(b)	The aggregate cost for federal income tax purposes is $1,486,890,320, the aggregate gross unrealized appreciation is $165,555,807, and the aggregate gross unrealized depreciation is $341,552,649, resulting in net unrealized depreciation of $175,996,842.

Copyright in the Domini 400 Social Index^SM is owned by KLD Research & Analytics, Inc., and the Index is reproduced here by permission. No portion of the Index may be reproduced or distributed by any means or in any medium without the express written consent of the copyright owner.

See Notes to Financial Statements

-6-

Domini Social Index Portfolio

Statement of Assets and Liabilities

July 31, 2003


ASSETS:
Investments at value (Cost $1,415,797,322)	$	1,310,893,478
Cash		5,873,590
Dividends receivable		1,853,243
Total assets		1,318,620,311
LIABILITIES:
Accrued expenses (Note 2)		277,654
Total liabilities		277,654
NET ASSETS APPLICABLE TO INVESTORS' BENEFICIAL INTERESTS	$	1,318,342,657

See Notes to Financial Statements

-7-

Domini Social Index Portfolio

Statement of Operations

Year Ended July 31, 2003


INVESTMENT INCOME
Dividends				$	18,491,907
EXPENSES
Management fee (Note 2)	$	2,383,240
Custody fees (Note 3)		238,909
Professional fees		211,750
Trustees fees		44,791
Miscellaneous		12,400
Total expenses		2,891,090
Fees paid indirectly (Note 3)		(47,001	)
Expenses paid and fee waived by manager (Note 2)		(120,067	)
Net expenses					2,724,022

NET INVESTMENT INCOME					15,767,885
Net realized loss on investments
Proceeds from sales	$	142,322,292
Cost of securities sold		(261,023,402	)
Net realized loss on investments					(118,701,110	)
Net changes in unrealized depreciation of investments
Beginning of period	$	(347,525,759	)
End of period		(104,903,844	)
Net change in unrealized depreciation					242,621,915
NET INCREASE IN NET ASSETS RESULTING FROM OPERATIONS				$	139,688,690

See Notes to Financial Statements

-8-

Domini Social Index Portfolio

Statements of Changes in Net Assets


	Year Ended July 31, 2003			Year Ended July 31, 2002
INCREASE/(DECREASE) IN NET ASSETS
From Operations:
Net investment income	$	15,767,885		$	15,910,596
Net realized loss on investments		(118,701,110	)		(142,946,751	)
Net change in unrealized depreciation of investments		242,621,915			(261,123,037	)
Net Increase/(Decrease) in Net Assets Resulting from Operations		139,688,690			(388,159,192	)
Transactions in Investors' Beneficial Interest:
Additions		249,027,799			309,789,675
Reductions		(309,700,811	)		(411,308,581	)
Net Decrease in Net Assets from Transactions in Investors' Beneficial Interests		(60,673,012	)		(101,518,906	)
Total Increase/(Decrease) in Net Assets		79,015,678			(489,678,098	)
NET ASSETS:
Beginning of period		1,239,326,979			1,729,005,077
End of period	$	1,318,342,657		$	1,239,326,979

See Notes to Financial Statements

-9-

Domini Social Index Portfolio

Financial Highlights


	Year Ended July 31,
	2003			2002			2001			2000			1999
Net assets (in millions)	$	1,318		$	1,239		$	1,729		$	1,974		$	1,347
Total return		11.72	%		–24.79	%		–18.98	%		7.15	%		24.04	%
Ratio of net investment income to average net assets		1.32	%⁽¹⁾		1.02	%		0.78	%		0.70	%⁽¹⁾		0.84	%⁽¹⁾
Ratio of expenses to average net assets		0.23	%⁽¹⁾⁽²⁾		0.22	%⁽²⁾		0.22	%⁽²⁾		0.24	%⁽¹⁾⁽²⁾		0.24	%⁽¹⁾⁽²⁾
Portfolio turnover rate		8	%		13	%		19	%		9	%		8	%

⁽¹⁾

Reflects an expense reimbursement and fee waiver by the Manager of 0.01%, 0.002%, and 0.01% for the years ended July 31, 2003, 2000, and 1999, respectively. Had the Manager not waived its fee and reimbursed expenses, the ratio of expenses to average net assets would have been 0.24%, 0.24%, and 0.25%, for the years ended July 31, 2003, 2000, and 1999, respectively.

⁽²⁾

Ratio of expenses to average net assets for the years ended July 31, 2003, 2002, 2001, 2000, and 1999, include indirectly paid expenses. Excluding indirectly paid expenses, the expense ratios would have been 0.23%, 0.22%, 0.21%, 0.21%, and 0.20%, for the years ended July 31, 2003, 2002, 2001, 2000, and 1999, respectively.

See Notes to Financial Statements

-10-

Domini Social Index Portfolio
Notes to Financial Statements

July 31, 2003

1. ORGANIZATION AND SIGNIFICANT ACCOUNTING POLICIES

Domini Social Index Portfolio is registered under the Investment Company Act of 1940 as a no-load, diversified, open-end management investment company that was organized as a trust under the laws of the State of New York on June 7, 1989. The Portfolio intends to correlate its investment portfolio as closely as is practicable with the Domini 400 Social Index,^SM which is a common stock index developed and maintained by KLD Research & Analytics, Inc. The Declaration of Trust permits the Trustees to issue an unlimited number of beneficial interests in the Portfolio. The Portfolio commenced operations effective on August 10, 1990, and began investment operations on June 3, 1991.

The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. The following is a summary of the Portfolio's significant accounting policies.

(A) Valuation of Investments. The Portfolio values securities listed or traded on national securities exchanges at the last sale price or, if there have been no sales that day, at the mean of the current bid and ask price which represents the current value of the security. Securities listed on the NASDAQ National Market System are valued using the NASDAQ Official Closing Price (the "NOCP"). If an NOCP is not available for a security listed on the NASDAQ National Market System, the security will be valued at the last sale price or, if there have been no sales that day, at the mean of the current bid and ask price. Portfolio securities for which there are no such quotations or valuations are valued at fair value as determined in good faith by or at the direction of the Portfolio's Board of Trustees.

(B) Dividend Income. Dividend income is recorded on the ex-dividend date.

-11-

Domini Social Index Portfolio / Notes to Financial Statements (Continued)
July 31, 2003

(C) Federal Taxes. The Portfolio will be treated as a partnership for U.S. federal income tax purposes and is therefore not subject to U.S. federal income tax. As such, each investor in the Portfolio will be taxed on its share of the Portfolio's ordinary income and capital gains. It is intended that the Portfolio will be managed in such a way that an investor will be able to satisfy the requirements of the Internal Revenue Code applicable to regulated investment companies.

(D) Other. Investment transactions are accounted for on the trade date. Gains and losses are determined on the basis of identified cost.

2. TRANSACTIONS WITH AFFILIATES

(A) Manager. Domini Social Investments LLC (Domini) is registered as an investment adviser under the Investment Advisers Act of 1940. The services provided by Domini consist of investment supervisory services, overall operational support and administrative services. The administrative services include the provision of general office facilities and supervising the overall administration of the Portfolio. For its services under the Management Agreement, Domini receives from the Portfolio a fee accrued daily and paid monthly at an annual rate equal to 0.20%. For the year ended July 31, 2003, Domini waived fees totalling $120,067.

(B) Submanager. SSgA Funds Management, Inc. (SSgA) provides investment submanagement services to the Portfolio on a day-to-day basis pursuant to a Submanagement Agreement with Domini. SSgA does not determine the composition of the Domini 400 Social Index.^SM The Index's composition is determined by KLD Research & Analytics, Inc.

3. INVESTMENT TRANSACTIONS

Cost of purchases and proceeds from sales of investments, other than U.S. government securities and short-term obligations, for the year ended July 31, 2003, aggregated $97,512,592 and $142,322,292, respectively. For the year ended July 31, 2003, custody fees of the Portfolio were reduced by $47,001, which was compensation for uninvested cash left on deposit with the custodian.

-12-

Independent Auditors' Report

The Board of Trustees and Investors
Domini Social Index Portfolio:

We have audited the accompanying statement of assets and liabilities of Domini Social Index Portfolio (the "Portfolio"), including the portfolio of investments, as of July 31, 2003, and the related statement of operations for the year then ended, statements of changes in net assets for each of the years in the two-year period then ended, and financial highlights for each of the years in the five-year period then ended. These financial statements and financial highlights are the responsibility of the Portfolio's management. Our responsibility is to express an opinion on these financial statements and financial highlights based on our audits.

We conducted our audits in accordance with auditing standards generally accepted in the United States of America. 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. An audit includes examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements. Our procedures included confirmation of securities owned as of July 31, 2003 by correspondence with the custodian. An audit also includes assessing the accounting principles used and significant estimates made by management, as well as evaluating the overall financial statement presentation. We believe that our audits provide a reasonable basis for our opinion.

In our opinion, the financial statements and financial highlights referred to above present fairly, in all material respects, the financial position of Domini Social Index Portfolio as of July 31, 2003, the results of its operations for the year then ended, the changes in its net assets for each of the years in the two-year period then ended, and financial highlights for each of the years in the five-year period then ended, in conformity with accounting principles generally accepted in the United States of America.

Boston, Massachusetts
September 5, 2003

-13-

Trustees and Officers

The following table presents information about each Trustee and each Officer of the Portfolio as of July 31, 2003. Asterisks indicate that those Trustees and Officers are "interested persons" (as defined in the 1940 Act) of the Portfolio. Each Trustee and each Officer of the Portfolio noted as an interested person is interested by virtue of his or her position with Domini as described below. Unless otherwise indicated below, the address of each Trustee and each Officer is 536 Broadway, 7^th Floor, New York, NY 10012. The Portfolio does not hold annual shareholder meetings for the purpose of electing Trustees, and Trustees are not elected for fixed terms. This means that each Trustee will be elected to hold office until his or her successor is elected or until he or she retires, resigns, dies, or is removed from office. No Trustee or Officer is a director of a public company or a registered investment company other than, with respect to the Trustees, the Domini Funds.

Name and Age

Position(s)
Held with the
Portfolio and
Length of
Time Served

Principal Occupation(s)
During Past 5 Years and
Other Directorships Held

Number of
Portfolios in
the Domini
Family
of Funds
Overseen by
Trustee

Interested Trustee:

Amy L. Domini*
Age: 53

Chair, President, and Trustee since 1990

President and CEO, Domini (since 2002); Manager, Domini (since 1997); Manager, DSIL Investment Services LLC (since 1998); Private Trustee, Loring, Wolcott & Coolidge (fiduciary) (since 1987); CEO, Secretary, and Treasurer, KLD Research & Analytics, Inc. (social research provider) (1990-2000); Trustee, New England Quarterly (periodical) (since 1998); Board Member, Social Investment Forum (trade organization) (1995-1999); Trustee, Episcopal Church Pension Fund (since 1994); Board Member, Financial Markets Center (nonprofit financial markets research and education resources provider) (since 2002).

-14-

Trustees and Officers

Name and Age

Position(s)
Held with the
Portfolio and
Length of
Time Served

Principal Occupation(s)
During Past 5 Years and
Other Directorships Held

Number of
Portfolios in
the Domini
Family
of Funds
Overseen by
Trustee

Disinterested Trustees:

Julia Elizabeth Harris
Age: 55

Trustee since 1999

Trustee, Fiduciary Trust Company (since 2001); Vice President, UNC Partners, Inc. (financial management) (since 1990); Director and Treasurer, Boom Times, Inc. (service organization) (1997-1999).

Kirsten S. Moy
Age: 56

Trustee since 1999

Director, Economic Opportunities Program, The Aspen Institute (research and education) (since 2001); Board Member, Community Reinvestment Fund (since 2003); Consultant, Equitable Life/AXA (1998-2001); Project Director, Community Development Innovation and Infrastructure Initiative (research) (1998-2001); Group Leader, Financial Innovations Roundtable (research) (2000-2001); Consultant, Social Investment Forum (trade association) (1998); Distinguished Visitor, John D. and Catherine T. MacArthur Foundation (1998).

-15-

Trustees and Officers

Name and Age

Position(s)
Held with the
Portfolio and
Length of
Time Served

Principal Occupation(s)
During Past 5 Years and
Other Directorships Held

Number of
Portfolios in
the Domini
Family
of Funds
Overseen by
Trustee

William C. Osborn
Age: 59

Trustee since 1997

Manager, Commons Capital Management LLC (venture capital) (since 2000); Special Partner/Consultant, Arete Corporation (venture capital) (since 1999); Principal/Manager, Venture Investment Management Company LLC (venture capital) (1996-1999); Director, World Power Technologies, Inc. (power equipment production) (since 1999); Director, Investors' Circle (socially responsible investor network) (since 1999).

Karen Paul
Age: 58

Trustee since 1997

Professor of Management and International Business, Florida International University (since 1990); Partner, Trinity Industrial Technology (1997-2002); Executive Director, Center for Management in the Americas (1997-2002).

Gregory A. Ratliff
Age: 43

Trustee since 1999

Senior Fellow, The Aspen Institute (research and education) (since 2002); Director, Economic Opportunity, John D. and Catherine T. MacArthur Foundation (1997-2001).

-16-

Trustees and Officers

Name and Age

Position(s)
Held with the
Portfolio and
Length of
Time Served

Principal Occupation(s)
During Past 5 Years and
Other Directorships Held

Number of
Portfolios in
the Domini
Family
of Funds
Overseen by
Trustee

Frederick C.
Williamson, Sr.
Age: 87

Trustee since 1990

State Historic Preservation Officer (state government) (since 1969); Trustee, RIGHA Foundation (charitable foundation supporting healthcare needs) (since 1994); Chairman, Rhode Island Historical Preservation and Heritage Commission (state government) (since 1995); Board Member, Rhode Island Black Heritage Society (nonprofit education) (since 1984); Trustee, National Park Trust (nonprofit land acquisition) (since 1983); Board of Directors, Grow Smart Rhode Island (nonprofit state planning) (since 1998); President's Advisory Board — Salve Regina University, Newport, RI (since 1999); Board Member, Preserve Rhode Island (nonprofit preservation) (since 1999).

Officers:

Carole M. Laible*
Age: 39

Secretary and Treasurer since 1997

Chief Operating Officer, Domini (since 2002); Financial/Compliance Officer, Domini (1997-2003); President and CEO, DSIL Investment Services LLC (since 2002); Chief Compliance Officer, DSIL Investment Services LLC (since 2001); Chief Financial Officer, Secretary, and Treasurer, DSIL Investment Services LLC (since 1998).

N/A

-17-

Trustees and Officers

Name and Age

Position(s)
Held with the
Portfolio and
Length of
Time Served

Principal Occupation(s)
During Past 5 Years and
Other Directorships Held

Number of
Portfolios in
the Domini
Family
of Funds
Overseen by
Trustee

Steven D. Lydenberg*
Age: 57

Vice President since 1990

Chief Investment Officer, Domini (since 2003); Principal, Domini (1997-2003); Member, Domini (since 1997); Director, KLD Research & Analytics, Inc. (social research provider) (1990-2003); Director of Research, KLD Research & Analytics, Inc. (1990-2001).

N/A

The Portfolio's Registration Statement includes additional information about the Trustees and is available, without charge, upon request, by calling the following toll-free number: 1-800-217-0017.

-18-

Item 2. Code of Ethics.

As of the end of the period covered by this report on Form N-CSR, the registrant has adopted a code of ethics that applies to the registrant's principal executive officer, principal financial officer, and principal accounting officer.

Item 3. Audit Committee Financial Expert.

The Board of Trustees of the registrant has determined that the registrant does not currently have a member serving on its audit committee that meets the definition of an "audit committee financial expert" as defined in the instructions to this Form N-CSR.

Although each member of the registrant's audit committee has one or more of the attributes required in order for such person to be determined to be an audit committee financial expert, no member has all of such required attributes. The Trustees reviewed the attributes, education, and experience of each member of the registrant's audit committee, the nature of the accounting principles applicable to the registrant, and the registrant's underlying internal controls and reporting mechanisms and determined that the members of the registrant's audit committee, as a group, have the experience and education necessary to perform the audit committee's responsibilities, including with respect to the evaluation of the financial statements of the registrant. In addition, the Trustees determined that the audit committee has the resources and authority necessary to discharge its responsibilities, including the authority to retain at any time independent counsel and other advisers and experts. The Trustees also determined that each member of the registrant's audit committee is "independent" as defined in the instructions to this Form N-CSR.

The Trustees also determined, however, that the audit committee of the registrant would benefit from having one or more members that meet the definition of an audit committee financial expert. They have asked the nominating committee of the registrant to recruit such a candidate and to present such person to the Trustees for their consideration.

Item 4. Principal Accountant Fees and Services.

Not applicable at this time.

Item 5. Audit Committee of Listed Registrants.

Not applicable to the registrant.

Item 6. [Reserved]


Item 7.	Disclosure of Proxy Voting Policies and Procedures for Closed-End Management Investment Companies.

Not applicable to the registrant.

Item 8. [Reserved]

Item 9. Controls and Procedures.

(a)Within 90 days prior to the filing of this report on Form N-CSR, Amy L. Domini, the registrant's President and Principal Executive Officer, and Carole M. Laible, the registrant's Treasurer and Principal Financial Officer, reviewed the registrant's disclosure controls and procedures (as defined in Rule 30a-3(c) of the Investment Company Act of 1940) and evaluated their effectiveness. Based on their evaluation, Ms. Domini and Ms. Laible determined that the disclosure controls and procedures adequately ensure that information required to be disclosed by the registrant in this report on Form N-CSR is recorded, processed, summarized, and reported within the time periods required by the Securities and Exchange Commission's rules and forms.

(b)There were no changes in the registrant's internal control over financial reporting (as defined in Rule 30a-3(d) under the Investment Company Act of 1940) that occurred during the registrant's second fiscal half-year that have materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting.

Item 10. Exhibits.

(a)(1)The Code of Ethics referred to in Item 2 is filed herewith.

(a)(2) Separate certifications required by Rule 30a-2(a) under the Investment Company Act of 1940 for each principal executive officer and principal financial officer of the registrant are filed herewith.

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.

DOMINI SOCIAL INDEX PORTFOLIO

By: /s/ Amy L. Domini

Amy L. Domini
President

Date: October 7, 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/ Amy L. Domini

Amy L. Domini
President (Principal Executive Officer)

Date: October 7, 2003

By: /s/ Carole M. Laible

Carole M. Laible
Treasurer (Principal Financial Officer)

Date: October 7, 2003

Domini Social Trust Inactive N-CSRCertified annual shareholder report (management investment company)