N-Q 1 form-763.htm FORM N-Q form-763
UNITED STATES 
SECURITIES AND EXCHANGE COMMISSION 
Washington, D.C. 20549 
 
 
FORM N-Q 
 
QUARTERLY SCHEDULE OF PORTFOLIO HOLDINGS OF REGISTERED MANAGEMENT 
INVESTMENT COMPANY 
 
Investment Company Act file number 811-5719 
 
Dreyfus Stock Index Fund, Inc. 
(Exact name of Registrant as specified in charter) 
 
 
c/o The Dreyfus Corporation 
200 Park Avenue 
New York, New York 10166 
(Address of principal executive offices) (Zip code) 
 
Michael A. Rosenberg, Esq. 
200 Park Avenue 
New York, New York 10166 
(Name and address of agent for service) 
 
Registrant's telephone number, including area code: (212) 922-6000 

Date of fiscal year end:    12/31 
Date of reporting period:    9/30/07 

FORM N-Q

Item 1. Schedule of Investments.

STATEMENT OF INVESTMENTS             
Dreyfus Stock Index Fund             
September 30, 2007 (Unaudited)             
 
 
Common Stocks--98.7%    Shares        Value ($) 
Consumer Discretionary--9.1%             
Abercrombie & Fitch, Cl. A    22,200        1,791,540 
Amazon.com    78,300 a        7,293,645 
Apollo Group, Cl. A    36,450 a        2,192,468 
AutoNation    38,800 a        687,536 
AutoZone    11,700 a        1,358,838 
Bed Bath & Beyond    69,500 a,b        2,371,340 
Best Buy    102,025 b        4,695,190 
Big Lots    26,100 a,b        778,824 
Black & Decker    16,800 b        1,399,440 
Brunswick    22,800        521,208 
Carnival    111,824        5,415,636 
CBS, Cl. B    175,493        5,528,029 
Centex    30,700 b        815,699 
Circuit City Stores    43,200 b        341,712 
Clear Channel Communications    127,547        4,775,360 
Coach    95,600 a        4,519,012 
Comcast, Cl. A    791,787 a        19,145,410 
D.R. Horton    70,000 b        896,700 
Darden Restaurants    36,250        1,517,425 
Dillard's, Cl. A    15,600 b        340,548 
DIRECTV Group    194,600 a        4,724,888 
Dow Jones & Co.    16,700        996,990 
E.W. Scripps, Cl. A    23,000 b        966,000 
Eastman Kodak    73,500 b        1,966,860 
Family Dollar Stores    37,250 b        989,360 
Ford Motor    537,850 a,b        4,566,346 
Fortune Brands    39,250 b        3,198,482 
Gannett    59,688        2,608,366 
Gap    126,751        2,337,288 
General Motors    144,948 b        5,319,592 
Genuine Parts    43,550 b        2,177,500 
Goodyear Tire & Rubber    54,100 a,b        1,645,181 
H & R Block    83,200 b        1,762,176 
Harley-Davidson    64,400 b        2,975,924 
Harman International Industries    16,700        1,444,884 
Harrah's Entertainment    47,950        4,168,293 
Hasbro    40,950 b        1,141,686 
Hilton Hotels    100,050        4,651,324 
Home Depot    432,544        14,031,727 
IAC/InterActiveCorp    48,900 a        1,450,863 
International Game Technology    86,000        3,706,600 
Interpublic Group of Cos.    120,793 a,b        1,253,831 
J.C. Penney    56,800        3,599,416 
Johnson Controls    50,700 b        5,988,177 
Jones Apparel Group    23,900 b        505,007 
KB Home    19,700 b        493,682 
Kohl's    81,423 a        4,667,981 
Leggett & Platt    44,800        858,368 
Lennar, Cl. A    35,700 b        808,605 
Limited Brands    81,700 b        1,870,113 
Liz Claiborne    26,200 b        899,446 
Lowe's Cos.    378,820 b        10,614,536 
Macy's    111,108        3,591,011 
Marriott International, Cl. A    81,900        3,560,193 
Mattel    101,095        2,371,689 

McDonald's    305,355    16,632,687 
McGraw-Hill Cos.    86,800    4,418,988 
Meredith    9,900    567,270 
New York Times, Cl. A    36,900 b    729,144 
Newell Rubbermaid    70,778    2,039,822 
News, Cl. A    593,100    13,042,269 
NIKE, Cl. B    99,000 b    5,807,340 
Nordstrom    50,700    2,377,323 
Office Depot    69,900 a    1,441,338 
OfficeMax    19,300    661,411 
Omnicom Group    84,060    4,042,445 
Polo Ralph Lauren    15,300    1,189,575 
Pulte Homes    54,400 b    740,384 
RadioShack    35,300 b    729,298 
Sears Holdings    19,388 a,b    2,466,154 
Sherwin-Williams    27,800 b    1,826,738 
Snap-On    14,800 b    733,192 
Stanley Works    21,000    1,178,730 
Staples    182,925    3,931,058 
Starbucks    190,900 a    5,001,580 
Starwood Hotels & Resorts         
Worldwide    53,800    3,268,350 
Target    216,842    13,784,646 
Tiffany & Co.    35,000 b    1,832,250 
Time Warner    955,368    17,540,556 
TJX Cos.    113,950 b    3,312,526 
Tribune    19,678 b    537,603 
VF    22,800    1,841,100 
Viacom, Cl. B    175,893 a    6,854,550 
Walt Disney    497,209    17,099,018 
Wendy's International    22,400    781,984 
Whirlpool    19,932 b    1,775,941 
Wyndham Worldwide    45,760    1,499,098 
Yum! Brands    133,200    4,506,156 
        318,488,469 
Consumer Staples--9.4%         
Altria Group    539,343    37,500,519 
Anheuser-Busch Cos.    192,050    9,600,580 
Archer-Daniels-Midland    164,905    5,455,057 
Avon Products    110,800    4,158,324 
Brown-Forman, Cl. B    22,200    1,663,002 
Campbell Soup    57,549    2,129,313 
Clorox    35,450    2,162,095 
Coca-Cola    509,742    29,294,873 
Coca-Cola Enterprises    73,000    1,768,060 
Colgate-Palmolive    130,650    9,317,958 
ConAgra Foods    125,450    3,278,008 
Constellation Brands, Cl. A    49,700 a    1,203,237 
Costco Wholesale    112,150    6,882,645 
CVS    379,434    15,036,969 
Dean Foods    33,200    849,256 
Estee Lauder Cos., Cl. A    29,400    1,248,324 
General Mills    84,600    4,907,646 
H.J. Heinz    81,800    3,779,160 
Hershey    43,278 b    2,008,532 
Kellogg    68,000    3,808,000 
Kimberly-Clark    108,998 b    7,658,199 
Kraft Foods, Cl. A    403,924    13,939,417 
Kroger    181,248    5,169,193 
McCormick & Co.    33,200    1,194,204 
Molson Coors Brewing, Cl. B    17,450    1,739,241 
Pepsi Bottling Group    35,850    1,332,544 

PepsiCo    413,891    30,321,655 
Procter & Gamble    799,441    56,232,680 
Reynolds American    43,800 b    2,785,242 
Safeway    112,469    3,723,849 
Sara Lee    185,598    3,097,631 
SUPERVALU    53,851    2,100,728 
SYSCO    156,250    5,560,937 
Tyson Foods, Cl. A    70,500    1,258,425 
UST    40,800 b    2,023,680 
Wal-Mart Stores    614,929    26,841,651 
Walgreen    254,600    12,027,304 
Whole Foods Market    35,600 b    1,742,976 
Wm. Wrigley Jr.    55,625    3,572,794 
        328,373,908 
Energy--11.5%         
Anadarko Petroleum    118,868    6,389,155 
Apache    85,022    7,657,081 
Baker Hughes    81,860 b    7,397,688 
BJ Services    74,700    1,983,285 
Chesapeake Energy    105,100 b    3,705,826 
Chevron    546,161    51,109,746 
ConocoPhillips    416,893    36,590,699 
Consol Energy    46,700    2,176,220 
Devon Energy    114,300    9,509,760 
El Paso    179,479    3,045,759 
ENSCO International    37,900 b    2,126,190 
EOG Resources    62,700 b    4,535,091 
Exxon Mobil    1,420,918    131,520,170 
Halliburton    228,002    8,755,277 
Hess    70,900    4,716,977 
Marathon Oil    174,480    9,948,850 
Murphy Oil    48,300 b    3,375,687 
Nabors Industries    72,000 a,b    2,215,440 
National Oilwell Varco    45,600 a    6,589,200 
Noble    68,800    3,374,640 
Occidental Petroleum    212,800    13,636,224 
Peabody Energy    68,000    3,255,160 
Rowan Cos.    28,300 b    1,035,214 
Schlumberger    305,400    32,067,000 
Smith International    51,400 b    3,669,960 
Spectra Energy    161,923    3,963,875 
Sunoco    30,800 b    2,180,024 
Transocean    74,133 a,b    8,380,736 
Valero Energy    141,900    9,532,842 
Weatherford International    86,300 a    5,797,634 
Williams Cos.    153,771    5,237,440 
XTO Energy    98,866    6,113,873 
        401,592,723 
Financial--19.5%         
ACE    84,250    5,103,022 
Aflac    125,192    7,140,952 
Allstate    149,871    8,571,122 
Ambac Financial Group    26,094 b    1,641,574 
American Capital Strategies    48,100 b    2,055,313 
American Express    303,073    17,993,444 
American International Group    656,973    44,444,223 
Ameriprise Financial    60,234    3,801,368 
AON    75,050    3,362,991 
Apartment Investment & Management,         
Cl. A    24,800 b    1,119,224 
Archstone-Smith Trust    57,300 b    3,446,022 
Assurant    24,700    1,321,450 

AvalonBay Communities    20,400 b    2,408,424 
Bank of America    1,136,765    57,145,177 
Bank of New York Mellon    291,463    12,865,177 
BB & T    141,400    5,711,146 
Bear Stearns Cos.    29,752    3,653,843 
Boston Properties    30,500    3,168,950 
Capital One Financial    107,000    7,108,010 
CB Richard Ellis Group, Cl. A    50,500 a    1,405,920 
Charles Schwab    242,778 b    5,244,005 
Chubb    100,800    5,406,912 
Cincinnati Financial    44,030    1,906,939 
CIT Group    48,900    1,965,780 
Citigroup    1,274,390    59,475,781 
CME Group    13,600    7,987,960 
Comerica    39,200    2,010,176 
Commerce Bancorp/NJ    49,300 b    1,911,854 
Countrywide Financial    147,598 b    2,805,838 
Developers Diversified Realty    31,800 b    1,776,666 
Discover Financial Services    122,258    2,542,966 
E*TRADE FINANCIAL    108,900 a,b    1,422,234 
Equity Residential    70,950    3,005,442 
Fannie Mae    249,409    15,166,561 
Federated Investors, Cl. B    22,400 b    889,280 
Fifth Third Bancorp    137,192 b    4,648,065 
First Horizon National    32,300 b    861,118 
Franklin Resources    41,600    5,304,000 
Freddie Mac    166,515    9,826,050 
General Growth Properties    62,900    3,372,698 
Genworth Financial, Cl. A    113,400    3,484,782 
Goldman Sachs Group    103,950    22,530,123 
Hartford Financial Services Group    81,350    7,528,942 
Host Hotels & Resorts    133,800    3,002,472 
Hudson City Bancorp    136,200    2,094,756 
Huntington Bancshares/OH    93,704    1,591,094 
IntercontinentalExchange    17,700 a    2,688,630 
Janus Capital Group    40,400 b    1,142,512 
JPMorgan Chase & Co.    866,926    39,722,549 
KeyCorp    99,766    3,225,435 
Kimco Realty    64,600 b    2,920,566 
Legg Mason    34,000    2,865,860 
Lehman Brothers Holdings    135,960    8,392,811 
Leucadia National    42,200 b    2,034,884 
Lincoln National    69,300    4,571,721 
Loews    113,850    5,504,648 
M & T Bank    19,200 b    1,986,240 
Marsh & McLennan Cos.    138,858    3,540,879 
Marshall & Ilsley    68,300    2,989,491 
MBIA    32,450 b    1,981,073 
Merrill Lynch & Co.    220,831    15,740,834 
MetLife    190,300    13,269,619 
MGIC Investment    21,000 b    678,510 
Moody's    56,800 b    2,862,720 
Morgan Stanley    269,616    16,985,808 
National City    162,199 b    4,069,573 
Northern Trust    49,090    3,253,194 
Plum Creek Timber    44,750    2,003,010 
PNC Financial Services Group    87,623    5,967,126 
Principal Financial Group    68,050    4,293,275 
Progressive    185,528 b    3,601,098 
ProLogis    65,800    4,365,830 
Prudential Financial    117,550    11,470,529 
Public Storage    31,900 b    2,508,935 

Regions Financial    180,288    5,314,890 
Safeco    26,650 b    1,631,513 
Simon Property Group    57,200 b    5,720,000 
SLM    105,700    5,250,119 
Sovereign Bancorp    92,105 b    1,569,469 
State Street    99,750    6,798,960 
SunTrust Banks    89,450    6,768,682 
Synovus Financial    83,850    2,351,993 
T. Rowe Price Group    67,900 b    3,781,351 
Torchmark    24,500    1,526,840 
Travelers Cos.    168,234    8,468,900 
U.S. Bancorp    442,305    14,388,182 
Unum Group    92,469    2,262,716 
Vornado Realty Trust    34,300 b    3,750,705 
Wachovia    487,508    24,448,526 
Washington Mutual    224,317    7,920,633 
Wells Fargo & Co.    856,314    30,501,905 
XL Capital, Cl. A    46,600    3,690,720 
Zions Bancorporation    27,600    1,895,292 
        683,908,602 
Health Care--11.5%         
Abbott Laboratories    395,876    21,226,871 
Aetna    130,964    7,107,416 
Allergan    78,800    5,080,236 
AmerisourceBergen    46,118    2,090,529 
Amgen    278,424 a    15,750,446 
Applera - Applied Biosystems Group    46,950    1,626,348 
Barr Pharmaceuticals    27,500 a    1,565,025 
Bausch & Lomb    14,200    908,800 
Baxter International    165,150    9,294,642 
Becton, Dickinson & Co.    62,400    5,119,920 
Biogen Idec    73,727 a,b    4,890,312 
Boston Scientific    341,763 a    4,767,594 
Bristol-Myers Squibb    506,728    14,603,901 
C.R. Bard    26,500    2,337,035 
Cardinal Health    93,400    5,840,302 
Celgene    98,100 a,b    6,995,511 
CIGNA    72,513    3,864,218 
Coventry Health Care    40,000 a    2,488,400 
Covidien    127,417    5,287,806 
Eli Lilly & Co.    252,837 b    14,394,010 
Express Scripts    66,100 a    3,689,702 
Forest Laboratories    81,000 a    3,020,490 
Genzyme    67,550 a    4,185,398 
Gilead Sciences    237,300 a    9,698,451 
Hospira    40,277 a    1,669,482 
Humana    43,200 a    3,018,816 
IMS Health    49,950 b    1,530,468 
Johnson & Johnson    741,502    48,716,681 
King Pharmaceuticals    62,566 a    733,274 
Laboratory Corp. of America         
Holdings    30,100 a,b    2,354,723 
Manor Care    18,800 b    1,210,720 
McKesson    75,869    4,460,339 
Medco Health Solutions    69,399 a    6,272,976 
Medtronic    290,573 b    16,391,223 
Merck & Co.    557,566    28,820,587 
Millipore    13,800 a,b    1,046,040 
Mylan Laboratories    63,700    1,016,652 
Patterson Cos.    35,900 a,b    1,386,099 
PerkinElmer    31,068    907,496 
Pfizer    1,774,611    43,353,747 

Quest Diagnostics    40,000 b    2,310,800 
Schering-Plough    414,851    13,121,737 
St. Jude Medical    87,300 a    3,847,311 
Stryker    60,800    4,180,608 
Tenet Healthcare    121,400 a    407,904 
Thermo Fisher Scientific    109,300 a    6,308,796 
UnitedHealth Group    339,400    16,437,142 
Varian Medical Systems    32,400 a    1,357,236 
Waters    25,550 a    1,709,806 
Watson Pharmaceuticals    26,300 a,b    852,120 
WellPoint    154,700 a    12,208,924 
Wyeth    344,520    15,348,366 
Zimmer Holdings    60,502 a    4,900,057 
        401,713,493 
Industrial--11.4%         
3M    183,398    17,162,385 
Allied Waste Industries    73,900 a,b    942,225 
American Standard Cos.    46,500    1,656,330 
Avery Dennison    27,250    1,553,795 
Boeing    200,820    21,084,092 
Burlington Northern Santa Fe    76,992    6,249,441 
C.H. Robinson Worldwide    44,200 b    2,399,618 
Caterpillar    163,730    12,841,344 
Cintas    34,600    1,283,660 
Cooper Industries, Cl. A    47,100 b    2,406,339 
CSX    112,500    4,807,125 
Cummins    26,700    3,414,663 
Danaher    63,200 b    5,227,272 
Deere & Co.    56,800    8,430,256 
Dover    52,450    2,672,328 
Eaton    37,300    3,694,192 
Emerson Electric    202,880    10,797,274 
Equifax    36,550    1,393,286 
FedEx    79,140 b    8,289,915 
Fluor    22,600 b    3,253,948 
General Dynamics    103,972    8,782,515 
General Electric    2,624,883    108,670,156 
Goodrich    32,100    2,190,183 
Honeywell International    191,724 b    11,401,826 
Illinois Tool Works    107,500    6,411,300 
Ingersoll-Rand, Cl. A    73,400    3,998,098 
ITT Industries    46,400    3,151,952 
L-3 Communications Holdings    32,302    3,299,326 
Lockheed Martin    88,960    9,651,270 
Masco    94,100 b    2,180,297 
Monster Worldwide    33,900 a,b    1,154,634 
Norfolk Southern    100,850    5,235,124 
Northrop Grumman    88,004    6,864,312 
Paccar    63,668    5,427,697 
Pall    31,401    1,221,499 
Parker Hannifin    29,775    3,329,738 
Pitney Bowes    56,300    2,557,146 
Precision Castparts    35,300    5,223,694 
R.R. Donnelley & Sons    56,850    2,078,436 
Raytheon    112,050 b    7,151,031 
Robert Half International    42,000    1,254,120 
Rockwell Automation    39,100    2,717,841 
Rockwell Collins    42,650    3,115,156 
Ryder System    15,300    749,700 
Southwest Airlines    191,412    2,832,898 
Terex    26,100 a    2,323,422 
Tesoro    35,100    1,615,302 

Textron    64,000    3,981,440 
Tyco International    127,317    5,645,236 
Union Pacific    68,228    7,713,858 
United Parcel Service, Cl. B    268,950    20,198,145 
United Technologies    254,082    20,448,519 
W.W. Grainger    18,400    1,677,896 
Waste Management    132,954    5,017,684 
        398,830,939 
Information Technology--16.0%         
Adobe Systems    150,700 a    6,579,562 
Advanced Micro Devices    140,900 a,b    1,859,880 
Affiliated Computer Services, Cl.         
A    25,500 a    1,281,120 
Agilent Technologies    98,990 a    3,650,751 
Akamai Technologies    42,400 a,b    1,218,152 
Altera    91,200 b    2,196,096 
Analog Devices    79,700    2,881,952 
Apple    222,800 a    34,208,712 
Applied Materials    353,100    7,309,170 
Autodesk    58,900 a    2,943,233 
Automatic Data Processing    136,078    6,250,063 
Avaya    117,092 a    1,985,880 
BMC Software    51,500 a    1,608,345 
Broadcom, Cl. A    120,187 a    4,379,614 
CA    99,609 b    2,561,943 
Ciena    21,985 a,b    837,189 
Cisco Systems    1,560,418 a    51,665,440 
Citrix Systems    46,100 a    1,858,752 
Cognizant Technology Solutions,         
Cl. A    37,000 a    2,951,490 
Computer Sciences    44,600 a    2,493,140 
Compuware    77,600 a    622,352 
Convergys    34,702 a    602,427 
Corning    402,998    9,933,901 
Dell    581,912 a    16,060,771 
eBay    292,300 a    11,405,546 
Electronic Arts    79,700 a    4,462,403 
Electronic Data Systems    130,350    2,846,844 
EMC/Massachusetts    537,344 a    11,176,755 
Fidelity National Information         
Services    43,500    1,930,095 
Fiserv    42,782 a    2,175,893 
Google, Cl. A    59,200 a    33,582,384 
Hewlett-Packard    660,480    32,885,299 
Intel    1,496,110    38,689,405 
International Business Machines    348,468 b    41,049,530 
Intuit    86,800 a    2,630,040 
Jabil Circuit    53,200 b    1,215,088 
JDS Uniphase    54,199 a,b    810,817 
Juniper Networks    131,700 a    4,821,537 
KLA-Tencor    49,500 b    2,761,110 
Lexmark International, Cl. A    24,250 a,b    1,007,103 
Linear Technology    56,850 b    1,989,182 
LSI    183,400 a,b    1,360,828 
MEMC Electronic Materials    57,700 a    3,396,222 
Microchip Technology    55,700 b    2,023,024 
Micron Technology    193,850 a,b    2,151,735 
Microsoft    2,065,596 b    60,852,458 
Molex    36,775    990,351 
Motorola    592,985    10,988,012 
National Semiconductor    61,600    1,670,592 
NCR    46,200 a    1,097,250 

Network Appliance    91,200 a,b    2,454,192 
Novell    89,600 a    684,544 
Novellus Systems    31,700 a,b    864,142 
NVIDIA    140,600 a,b    5,095,344 
Oracle    1,008,592 a    21,836,017 
Paychex    87,175    3,574,175 
QLogic    37,600 a    505,720 
QUALCOMM    428,900    18,125,314 
SanDisk    58,400 a    3,217,840 
Solectron    234,100 a,b    912,990 
Sun Microsystems    906,284 a    5,084,253 
Symantec    230,379 a    4,464,745 
Tektronix    19,500    540,930 
Tellabs    112,300 a    1,069,096 
Teradyne    48,600 a    670,680 
Texas Instruments    366,148    13,397,355 
Tyco Electronics    127,417    4,514,384 
Unisys    89,700 a    593,814 
VeriSign    62,500 a,b    2,108,750 
Western Union    197,940    4,150,802 
Xerox    239,766 a    4,157,542 
Xilinx    75,800 b    1,981,412 
Yahoo!    345,176 a    9,264,524 
        557,178,003 
Materials--3.2%         
Air Products & Chemicals    55,350    5,411,016 
Alcoa    226,456    8,858,959 
Allegheny Technologies    26,236    2,884,648 
Ashland    14,300    861,003 
Ball    26,200    1,408,250 
Bemis    26,800    780,148 
Dow Chemical    243,352    10,478,737 
E.I. du Pont de Nemours & Co.    235,850    11,688,726 
Eastman Chemical    21,500    1,434,695 
Ecolab    44,600    2,105,120 
Freeport-McMoRan Copper & Gold    97,782 b    10,256,354 
Hercules    29,700 b    624,294 
International Flavors & Fragrances    22,900 b    1,210,494 
International Paper    110,020    3,946,417 
MeadWestvaco    47,039    1,389,062 
Monsanto    139,726    11,980,107 
Newmont Mining    115,654    5,173,203 
Nucor    73,800    4,388,886 
Pactiv    33,450 a    958,677 
PPG Industries    42,033    3,175,593 
Praxair    81,900 b    6,859,944 
Rohm & Haas    35,141    1,956,299 
Sealed Air    41,346    1,056,804 
Sigma-Aldrich    33,600    1,637,664 
Temple-Inland    27,100    1,426,273 
United States Steel    30,300    3,209,982 
Vulcan Materials    24,500 b    2,184,175 
Weyerhaeuser    55,300    3,998,190 
        111,343,720 
Telecommunication Services--3.7%         
Alltel    89,800    6,257,264 
AT & T    1,562,430    66,106,413 
CenturyTel    28,700    1,326,514 
Citizens Communications    87,200 b    1,248,704 
Embarq    39,108    2,174,405 
Qwest Communications International    409,262 a,b    3,748,840 
Sprint Nextel    729,261 b    13,855,959 

Verizon Communications    743,613    32,927,184 
Windstream    122,328 b    1,727,271 
        129,372,554 
Utilities--3.4%         
AES    171,300 a    3,432,852 
Allegheny Energy    42,500 a    2,221,050 
Ameren    53,200 b    2,793,000 
American Electric Power    102,250    4,711,680 
CenterPoint Energy    82,246 b    1,318,403 
CMS Energy    57,500 b    967,150 
Consolidated Edison    69,400 b    3,213,220 
Constellation Energy Group    46,250    3,967,788 
Dominion Resources/VA    74,592 b    6,288,106 
DTE Energy    43,750 b    2,119,250 
Duke Energy    322,847    6,034,010 
Dynergy, Cl. A    126,928 a    1,172,815 
Edison International    83,500    4,630,075 
Entergy    50,150 b    5,430,744 
Exelon    172,750 b    13,018,440 
FirstEnergy    78,133 b    4,948,944 
FPL Group    104,200    6,343,696 
Integrys Energy    19,429 b    995,348 
Nicor    11,600 b    497,640 
NiSource    70,253    1,344,642 
PG & E    90,550 b    4,328,290 
Pinnacle West Capital    25,700 b    1,015,407 
PPL    98,100    4,542,030 
Progress Energy    66,285 b    3,105,452 
Public Service Enterprise Group    65,150    5,732,549 
Questar    44,200    2,321,826 
Sempra Energy    67,595 b    3,928,621 
Southern    193,810    7,031,427 
TECO Energy    53,900 b    885,577 
TXU    118,160    8,090,415 
Xcel Energy    107,595 b    2,317,596 
        118,748,043 
Total Common Stocks         
(cost $1,946,077,363)        3,449,550,454 
    Principal     
Short-Term Investments--.1%    Amount ($)    Value ($) 
U.S. Treasury Bills         
3.34%, 11/15/07    1,750,000    1,742,300 
3.94%, 12/13/07    750,000 c    744,465 
Total Short-Term Investments         
(cost $2,486,702)        2,486,765 
 
Other Investment--1.2%    Shares    Value ($) 
Registered Investment Company;         
Dreyfus Institutional Preferred         
Plus Money Market Fund         
(cost $42,626,000)    42,626,000 d    42,626,000 
 
Investment of Cash Collateral for         
Securities Loaned--8.2%         
Registered Investment Company;         
Dreyfus Institutional Cash         
Advantage Plus Fund         
(cost $284,952,837)    284,952,837 d    284,952,837 
 
Total Investments (cost $2,276,142,902)    108.2%    3,779,616,056 
Liabilities, Less Cash and Receivables    (8.2%)    (286,782,141) 
Net Assets    100.0%    3,492,833,915 

a    Non-income producing security. 
b    All or a portion of these securities are on loan. At September 30, 2007, the total market value of the fund's securities on 
    loan is $274,472,497 and the total market value of the collateral held by the fund is $284,952,837. 
c    All or partially held by a broker as collateral for open financial futures positions. 
d    Investment in affiliated money market mutual fund. 

Securities valuation policies and other investment related disclosures are hereby incorporated by reference to the annual and semi-annual reports previously filed with the Securities and Exchange Commission on Form N-CSR.

STATEMENT OF FINANCIAL FUTURES 
September 30, 2007 (Unaudited) 

                Unrealized 
        Market Value        Appreciation 
        Covered by        (Depreciation) 
    Contracts    Contracts ($)    Expiration    at 9/30/2007 ($) 
Financial Futures Long                 
Standard & Poor's 500    128    49,219,200    December 2007    132,860 

Item 2. Controls and Procedures.

(a) The Registrant's principal executive and principal financial officers have concluded, based on their evaluation of the Registrant's disclosure controls and procedures as of a date within 90 days of the filing date of this report, that the Registrant's disclosure controls and procedures are reasonably designed to ensure that information required to be disclosed by the Registrant on Form N-Q is recorded, processed, summarized and reported within the required time periods and that information required to be disclosed by the Registrant in the reports that it files or submits on Form N-Q is accumulated and communicated to the Registrant's management, including its principal executive and principal financial officers, as appropriate to allow timely decisions regarding required disclosure.

(b) There were no changes to the Registrant's internal control over financial reporting that occurred during the Registrant's most recently ended fiscal quarter that have materially affected, or are reasonably likely to materially affect, the Registrant's internal control over financial reporting.

Item 3. Exhibits.

(a) Certifications of principal executive and principal financial officers as required by Rule 30a-2(a) 
under the Investment Company Act of 1940. 

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.

Dreyfus Stock Index Fund, Inc. 
 
By:    /s/ J. David Officer 
    J. David Officer
    President 
 
Date:    November 26, 2007 

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/ J. David Officer 
    J. David Officer 
    President 
 
Date:    November 26, 2007 
 
By:    /s/ J. David Officer 
    James Windels 
    Treasurer
 
Date:    November 26, 2007 

EXHIBIT INDEX

(a) Certifications of principal executive and principal financial officers as required by Rule 30a- 
2(a) under the Investment Company Act of 1940. (EX-99.CERT)