N-Q 1 explorerfinal.htm

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

FORM N-Q

QUARTERLY SCHEDULE OF PORTFOLIO HOLDINGS OF
REGISTERED MANAGEMENT COMPANY


Investment Company Act file number: 811-1530

Name of Registrant: Vanguard Explorer Fund

Address of Registrant: P.O. Box 2600
Valley Forge, PA 19482

Name and address of agent for service: Heidi Stam, Esquire
P.O. Box 876
Valley Forge, PA 19482

Registrant’s telephone number, including area code: (610) 669-1000


Date of fiscal year end: October 31

Date of reporting period: January 31, 2008

Item 1: Schedule of Investments


Vanguard Explorer Fund
Schedule of Investments
January 31, 2008


Shares Market
Value
($000)

Common Stocks (93.9%)

    Consumer Discretionary (14.2%)    
  * O'Reilly Automotive, Inc. 2,060,771  60,648 
  * GameStop Corp. Class A 1,067,455  55,219 
    Service Corp. International 4,353,450  52,372 
  * ITT Educational Services, Inc. 493,700  45,099 
  * Urban Outfitters, Inc. 1,496,130  43,388 
    DeVry, Inc. 770,799  42,540 
  * Priceline.com, Inc. 386,929  41,990 
  * WMS Industries, Inc. 971,047  36,317 
 *^ Life Time Fitness, Inc. 784,545  34,787 
  * Penn National Gaming, Inc. 632,482  32,984 
  * Texas Roadhouse, Inc. 2,467,538  29,783 
    Strayer Education, Inc. 168,519  29,083 
    Tiffany & Co. 714,100  28,493 
  * TiVo Inc. 2,935,400  25,743 
    Aaron Rents, Inc. 1,326,441  25,362 
  * DreamWorks Animation SKG, Inc. 992,667  24,271 
    Penske Automotive Group Inc. 1,292,800  23,477 
    Phillips-Van Heusen Corp. 541,880  22,835 
    Lamar Advertising Co. Class A 495,300  21,357 
  * Tenneco Automotive, Inc. 729,800  19,318 
    Guess ?, Inc. 506,800  18,909 
    Burger King Holdings Inc. 704,446  18,562 
  * TRW Automotive Holdings Corp. 808,720  18,544 
  * Deckers Outdoor Corp. 144,150  17,477 
  * Aeropostale, Inc. 594,250  16,740 
  * Capella Education Co. 263,400  16,615 
  * Marvel Entertainment, Inc. 581,585  16,401 
  * The Goodyear Tire & Rubber Co. 649,378  16,345 
  * Tractor Supply Co. 419,205  16,156 
    Garmin Ltd. 223,400  16,118 
    Ross Stores, Inc. 533,497  15,551 
  * Papa John's International, Inc. 612,000  15,477 
  * Dollar Tree Stores, Inc. 550,864  15,430 
    Newell Rubbermaid, Inc. 607,200  14,646 
  * Fossil, Inc. 428,242  14,552 
  * Morningstar, Inc. 216,326  14,288 
  * Dick's Sporting Goods, Inc. 434,600  14,146 
 *^ Crocs, Inc. 375,500  13,064 
  * Skechers U.S.A., Inc. 612,530  12,263 
  * Discovery Holding Co. Class A 508,975  11,818 
    The Buckle, Inc. 277,550  11,543 
  * Rent-A-Center, Inc. 664,800  11,368 
  ^ Columbia Sportswear Co. 259,700  11,336 
  * Hibbett Sports Inc. 598,453  11,125 
  * Collective Brands, Inc. 596,900  10,517 
  * Jack in the Box Inc. 333,700  9,754 
    Hasbro, Inc. 375,121  9,742 
  * INVESTools Inc. 682,800  9,327 
  * Bally Technologies Inc. 189,995  9,051 
    Interactive Data Corp. 311,600  9,021 
  * The Warnaco Group, Inc. 243,474  8,738 
    Meredith Corp. 178,300  8,378 
  ^ Tempur-Pedic International Inc. 422,400  8,372 
  * Quiksilver, Inc. 868,550  8,277 
    OfficeMax, Inc. 333,300  8,256 
  * Chipotle Mexican Grill, Inc. Class B 85,380  8,181 
    Harman International Industries, Inc. 165,890  7,725 
    Matthews International Corp. 157,100  7,677 
  * LodgeNet Interactive Corp. 494,000  7,454 
    Wolverine World Wide, Inc. 280,400  7,097 
    Men's Wearhouse, Inc. 274,886  7,007 
  * Melco PBL Entertainment (MACAU) Ltd. 560,535  6,782 
  * J. Crew Group, Inc. 145,700  6,661 
    Wendy's International, Inc. 271,100  6,620 
  * Big Lots Inc. 381,100  6,616 
  * Pre-Paid Legal Services, Inc. 114,908  6,383 
  * Scientific Games Corp. 268,125  6,381 
  * Volcom, Inc. 310,545  6,267 
    Gentex Corp. 387,000  6,138 
  * LKQ Corp. 340,740  6,096 
    American Eagle Outfitters, Inc. 261,101  6,013 
  * The Gymboree Corp. 156,400  5,978 
    Sotheby's 192,022  5,966 
  * Saks Inc. 328,100  5,922 
  * NVR, Inc. 9,250  5,841 
  * Gaylord Entertainment Co. 198,325  5,789 
    CBRL Group, Inc. 184,520  5,770 
    Polo Ralph Lauren Corp. 92,900  5,629 
    Regal Entertainment Group Class A 299,590  5,554 
    Arbitron Inc. 137,670  5,503 
    Tupperware Brands Corp. 142,350  5,267 
    Boyd Gaming Corp. 194,300  5,194 
 *^ Blue Nile Inc. 93,900  5,188 
  * Lear Corp. 174,200  5,115 
    RadioShack Corp. 294,700  5,113 
  * Harris Interactive Inc. 1,515,766  4,805 
  ^ Polaris Industries, Inc. 110,300  4,791 
 *^ Jos. A. Bank Clothiers, Inc. 169,100  4,606 
    John Wiley & Sons Class A 116,000  4,573 
    Brinker International, Inc. 243,450  4,531 
  * XM Satellite Radio Holdings, Inc. 360,200  4,466 
    Advance Auto Parts, Inc. 124,134  4,429 
  * Hollywood Media Corp. 1,561,823  4,389 
    National CineMedia Inc. 187,980  4,284 
    Choice Hotels International, Inc. 127,100  4,245 
  * Denny's Corp. 1,245,800  4,223 
    BorgWarner, Inc. 81,900  4,145 
  * Orbitz Worldwide, Inc. 632,100  3,970 
  * Drew Industries, Inc. 144,000  3,901 
  * Aftermarket Technology Corp. 151,350  3,846 
  * Sonic Corp. 169,500  3,760 
  * Career Education Corp. 168,500  3,663 
 *^ NutriSystem, Inc. 124,733  3,570 
    Weight Watchers International, Inc. 79,000  3,365 
  * Town Sports International Holdings, Inc. 379,800  3,304 
 *^ Chipotle Mexican Grill, Inc. 26,700  3,250 
  ^ Sealy Corp. 319,300  2,976 
    Blyth, Inc. 128,663  2,804 
  * Zumiez Inc. 144,005  2,769 
  ^ New York Times Co. Class A 162,300  2,717 
    Dover Downs Gaming & Entertainment, Inc. 272,850  2,592 
  * Universal Electronics, Inc. 108,003  2,572 
    Thor Industries, Inc. 70,160  2,478 
 *^ Sirius Satellite Radio, Inc. 755,200  2,417 
  * Hanesbrands Inc. 89,900  2,302 
    PetSmart, Inc. 88,600  2,026 
 *^ Ulta Salon, Cosmetics & Fragrance, Inc. 131,675  2,007 
  * Chico's FAS, Inc. 170,400  1,839 
    Abercrombie & Fitch Co. 20,900  1,666 
  * Lululemon Athletica, Inc. 45,900  1,556 
 *^ CarMax, Inc. 68,600  1,530 
    Barnes & Noble, Inc. 39,400  1,338 
    Triarc Cos., Inc. Class B 139,300  1,295 
  * Gemstar-TV Guide International, Inc. 288,971  1,245 
    Autoliv, Inc. 24,400  1,219 
  * Gaiam, Inc. 47,636  1,161 
  * Syntax-Brillian Corp. 452,396  1,068 
  * Buffalo Wild Wings Inc. 41,600  1,047 
 *^ Source Interlink Cos., Inc. 448,900  970 
  * Nexstar Broadcasting Group, Inc. 126,700  963 
  * Getty Images, Inc. 35,800  895 
    Monro Muffler Brake, Inc. 46,189  854 
    Cinemark Holdings Inc. 59,200  847 
  * PC Mall, Inc. 88,500  832 
  * Entravision Communications Corp. 116,756  822 
  * Genesco, Inc. 23,900  797 
    bebe stores, inc. 67,600  779 
  * Alloy, Inc. 99,300  775 
    Williams-Sonoma, Inc. 28,500  766 
  * JAKKS Pacific, Inc. 30,848  727 
    Systemax Inc. 51,600  713 
    Strattec Security Corp. 17,530  659 
 *^ P.F. Chang's China Bistro, Inc. 22,000  626 
  * DG FastChannel Inc. 28,800  610 
  * Valassis Communications, Inc. 59,400  568 
  * Hawk Corp. Class A 29,800  548 
    Dover Motorsports, Inc. 76,310  532 
    CKX, Inc. 43,800  438 
  * A.C. Moore Arts & Crafts, Inc. 33,100  397 
  * PetMed Express, Inc. 32,000  395 
  * Red Lion Hotels Corp. 48,360  382 
  * Rubio's Restaurants, Inc. 58,170  369 
    Ameristar Casinos, Inc. 15,400  338 
    Family Dollar Stores, Inc. 15,800  332 
  * Lodgian, Inc. 37,980  332 
  * Universal Technical Institute Inc. 21,400  318 
  * Jo-Ann Stores, Inc. 23,375  296 
    Value Line, Inc. 7,515  294 
    American Greetings Corp. Class A 14,049  288 
  * Sturm, Ruger & Co., Inc. 31,700  284 
 *^ Global Sources Ltd. 19,420  257 
    Spartan Motors, Inc. 28,550  256 
  * Morton's Restaurant Group Inc. 33,785  248 
    Harte-Hanks, Inc. 14,500  232 
  * Amerigon Inc. 11,800  202 
  * Culp, Inc. 28,350  194 
    Standard Motor Products, Inc. 19,494  161 
  * Riviera Holdings Corp. 7,000  158 
  * Nathan's Famous Inc 8,738  140 
    Christopher & Banks Corp. 10,700  137 
  * Appliance Recycling Centers of America, Inc. 22,260  136 
  * Tween Brands, Inc. 4,200  135 
  * RC2 Corp. 6,952  131 
  * Maidenform Brands, Inc. 9,800  121 
  * Cumulus Media Inc. 16,700  107 
  * Loud Technologies Inc. 14,172  101 
  * West Marine, Inc. 11,710  100 
  * Spanish Broadcasting System, Inc. 52,400  95 
    Stewart Enterprises, Inc. Class A 10,354  74 
  * Triple Crown Media, Inc. 13,340  65 
  * Q.E.P. Co. Inc. 5,417  51 
  * Man Sang Holdings, Inc. 7,000  47 
  * KSW, Inc. 5,000  33 
  * Aristotle Corp 2,932  32 
  * Silverleaf Resorts, Inc. 8,320  32 
  * Nobel Learning Communities, Inc. 2,200  32 
    Weyco Group, Inc. 748  22 
  * Jennifer Convertibles, Inc. 4,000  13 
  * G-III Apparel Group, Ltd. 450 
  * AutoZone Inc.

         1,490,705 

    Consumer Staples (2.6%)
  * Energizer Holdings, Inc. 436,650  40,879 
    Longs Drug Stores, Inc. 576,949  26,545 
    Nu Skin Enterprises, Inc. 1,228,160  20,179 
    Flowers Foods, Inc. 762,900  18,310 
    Hormel Foods Corp. 397,200  15,388 
    Tyson Foods, Inc. 1,022,100  14,565 
  * Performance Food Group Co. 449,670  14,223 
    Church & Dwight, Inc. 235,400  12,528 
    PriceSmart, Inc. 406,000  11,555 
 *^ Chattem, Inc. 126,000  9,667 
  * Central European Distribution Corp. 156,100  8,206 
    Herbalife Ltd. 178,800  7,095 
  * Hansen Natural Corp. 178,000  6,864 
    Casey's General Stores, Inc. 263,182  6,843 
    Alberto-Culver Co. 247,800  6,639 
 *^ Bare Escentuals, Inc. 243,990  5,817 
    McCormick & Co., Inc. 153,300  5,169 
  * NBTY, Inc. 212,748  5,153 
  ^ Vector Group Ltd. 218,600  4,044 
  * Winn-Dixie Stores, Inc. 213,300  3,780 
    Nash-Finch Co. 85,506  3,051 
  * Green Mountain Coffee Roasters, Inc. 76,400  2,943 
  * Darling International, Inc. 237,376  2,754 
    Diamond Foods, Inc. 111,830  2,121 
  * Jones Soda Co. 320,268  1,957 
 *^ USANA Health Sciences, Inc. 40,200  1,743 
  * Boston Beer Co., Inc. Class A 43,635  1,551 
  * Alliance One International, Inc. 407,300  1,536 
  * SunOpta, Inc. 280,912  1,531 
  ^ Sanderson Farms, Inc. 40,046  1,346 
    J.M. Smucker Co. 26,700  1,248 
  * Fresh Del Monte Produce Inc. 36,300  1,163 
    Ingles Markets, Inc. 47,433  1,105 
    Inter Parfums, Inc. 63,780  1,085 
  * Ralcorp Holdings, Inc. 17,600  958 
    PepsiAmericas, Inc. 32,700  806 
  * Jones Soda Co. Private Placement 107,000  654 
    The Estee Lauder Cos. Inc. Class A 14,200  599 
    J & J Snack Foods Corp. 14,151  354 
    Reddy Ice Holdings, Inc. 12,500  280 
  * Nutraceutical International Corp. 18,200  227 
    Cal-Maine Foods, Inc. 7,122  205 
  * American Oriental Bioengineering, Inc. 20,149  197 
    Arden Group Inc. Class A 1,243  173 
    WD-40 Co. 4,300  145 
    Coca-Cola Bottling Co. 2,000  120 
    Griffin Land & Nurseries, Inc. 3,300  109 
  * Susser Holdings Corp. 2,985  70 
  * Omega Protein Corp. 900 
  * Geopharma Inc. 950 
  * Natural Alternatives International, Inc. 205 

         273,493 

    Energy (7.8%)
  * Helix Energy Solutions Group, Inc. 1,261,983  46,656 
  * Superior Energy Services, Inc. 913,241  36,612 
    Tidewater Inc. 680,190  36,023 
  * Atwood Oceanics, Inc. 406,254  33,756 
    Rowan Cos., Inc. 939,100  31,967 
    St. Mary Land & Exploration Co. 886,000  31,214 
  * Ultra Petroleum Corp. 425,350  29,264 
  * Comstock Resources, Inc. 882,343  27,970 
    Helmerich & Payne, Inc. 663,000  26,003 
  * FMC Technologies Inc. 517,730  24,934 
    CARBO Ceramics Inc. 675,600  23,207 
    Frontier Oil Corp. 643,308  22,689 
  * Southwestern Energy Co. 399,990  22,363 
  * W-H Energy Services, Inc. 425,959  20,723 
    XTO Energy, Inc. 389,835  20,248 
  * Grant Prideco, Inc. 404,280  20,125 
    Range Resources Corp. 343,801  17,953 
    Foundation Coal Holdings, Inc. 342,880  17,933 
 *^ Delta Petroleum Corp. 814,410  16,329 
  * Oceaneering International, Inc. 276,600  15,927 
  * Mariner Energy Inc. 615,086  15,414 
  * Oil States International, Inc. 404,747  14,190 
  * OPTI Canada Inc. 830,400  13,688 
    Holly Corp. 282,500  13,679 
  * Exterran Holdings, Inc. 190,040  12,398 
  * Clean Energy Fuels Corp. 804,900  12,146 
  * Denbury Resources, Inc. 456,500  11,549 
  * Lundin Petroleum AB 1,137,000  11,304 
    Penn Virginia Corp. 264,063  11,252 
  * VeraSun Energy Corp. 1,056,400  11,039 
  * ATP Oil & Gas Corp. 290,980  10,952 
    Niko Resources Ltd. 127,000  10,765 
  * Uranium One Inc. 1,504,400  10,458 
  * National Oilwell Varco Inc. 141,690  8,534 
  * Rosetta Resources, Inc. 400,505  7,021 
  * Unit Corp. 138,800  6,957 
 *^ SandRidge Energy, Inc. 194,370  5,915 
  * Dresser Rand Group, Inc. 182,300  5,779 
    Lufkin Industries, Inc. 105,892  5,599 
  * Veneco Inc. 347,900  5,319 
  * Bois d'Arc Energy, Inc. 266,200  5,098 
  * EXCO Resources, Inc. 320,851  4,810 
  * Parker Drilling Co. 686,100  4,768 
  * Cal Dive International, Inc. 498,851  4,729 
  * Continental Resources, Inc. 184,200  4,588 
  * ION Geophysical Corp. 355,200  4,404 
  * USEC Inc. 462,600  3,733 
  * Hornbeck Offshore Services, Inc. 94,811  3,667 
  * Global Industries Ltd. 206,696  3,650 
  * Dawson Geophysical Co. 63,300  3,626 
  * Parallel Petroleum Corp. 230,750  3,203 
    Massey Energy Co. 64,140  2,385 
    Crosstex Energy, Inc. 71,599  2,344 
  * T-3 Energy Services, Inc. 49,270  2,217 
  * Petrohawk Energy Corp. 140,520  2,213 
  * Newpark Resources, Inc. 449,909  2,191 
  * SEACOR Holdings Inc. 22,890  2,019 
  * Gulfmark Offshore, Inc. 47,064  1,968 
  * Tesco Corp. 83,700  1,903 
    Tesoro Corp. 46,200  1,804 
  * OYO Geospace Corp. 30,495  1,611 
  * Complete Production Services, Inc. 99,834  1,587 
  * Trico Marine Services, Inc. 44,944  1,442 
    Western Refining, Inc. 66,800  1,426 
  * Alpha Natural Resources, Inc. 37,200  1,245 
    Cabot Oil & Gas Corp. 31,800  1,230 
    Berry Petroleum Class A 29,800  1,117 
  * Willbros Group, Inc. 31,600  1,053 
 *^ Cheniere Energy, Inc. 30,900  930 
    Alon USA Energy, Inc. 46,200  841 
    Atlas America, Inc. 14,245  729 
  * Union Drilling, Inc. 44,213  680 
  ^ Knightsbridge Tankers Ltd. 24,300  638 
  * Matrix Service Co. 33,508  604 
    Cimarex Energy Co. 14,500  592 
    MarkWest Hydrocarbon, Inc. 8,100  507 
 *^ Bolt Technology Corp. 25,350  489 
    Delek US Holdings, Inc. 26,500  435 
  * Vaalco Energy, Inc. 96,400  434 
  * Whiting Petroleum Corp. 7,664  412 
    Patterson-UTI Energy, Inc. 20,300  397 
  * Bronco Drilling Co., Inc. 22,432  351 
  * Contango Oil & Gas Co. 5,100  306 
 *^ SulphCo, Inc. 99,500  302 
    Ship Finance International Ltd. 10,500  274 
  * Forest Oil Corp. 5,170  234 
  * Rentech, Inc. 138,162  185 
  * NATCO Group Inc. 3,900  179 
  * Petroleum Development Corp. 2,552  147 
  * Grey Wolf, Inc. 24,600  147 
    RPC Inc. 11,600  125 
  * US BioEnergy Corp. 10,800  90 
  * Prime Energy Corp. 625  34 

         811,947 

    Financials (7.0%)
 *^ Affiliated Managers Group, Inc. 400,080  39,332 
    Cash America International Inc. 1,123,100  36,512 
    SEI Investments Co. 966,800  26,780 
    Jefferies Group, Inc. 1,266,563  25,610 
  * Nasdaq Stock Market Inc. 548,682  25,388 
    Eaton Vance Corp. 643,900  23,998 
    Waddell & Reed Financial, Inc. 659,600  21,886 
    Cullen/Frost Bankers, Inc. 374,584  20,392 
    Reinsurance Group of America, Inc. 348,400  20,197 
  ^ CapitalSource Inc. REIT 1,170,749  19,212 
  * Markel Corp. 39,200  18,150 
    Federated Investors, Inc. 409,464  17,431 
    Aspen Insurance Holdings Ltd. 613,700  17,319 
  * ProAssurance Corp. 294,700  17,004 
    People's United Financial Inc. 940,800  15,890 
    Platinum Underwriters Holdings, Ltd. 466,200  15,734 
    Canadian Western Bank 517,300  15,147 
    PartnerRe Ltd. 169,700  13,454 
    Janus Capital Group Inc. 441,800  11,933 
    U-Store-It Trust REIT 1,229,000  11,700 
  * Philadelphia Consolidated Holding Corp. 321,300  11,503 
  * Interactive Brokers Group, Inc. 328,425  11,432 
  ^ Greenhill & Co., Inc. 168,680  11,391 
    MFA Mortgage Investments, Inc. REIT 1,077,700  10,993 
    Lazard Ltd. Class A 268,335  10,605 
    First Community Bancorp 288,200  10,240 
  * GFI Group Inc. 113,160  9,982 
  * Investment Technology Group, Inc. 196,930  9,250 
  1 Advanta Corp. Class A 1,000,000  8,920 
    HCC Insurance Holdings, Inc. 315,310  8,785 
    Digital Realty Trust, Inc. REIT 243,750  8,709 
  * Aberdeen Asset Management PLC 2,546,387  7,289 
    QC Holdings Inc. 664,386  6,983 
    Assurant, Inc. 103,800  6,736 
    Max Re Capital Ltd. 236,700  6,720 
    Brown & Brown, Inc. 290,400  6,537 
  * MF Global Ltd. 210,500  6,326 
    Nymex Holdings Inc. 53,830  6,190 
    Jones Lang LaSalle Inc. 79,300  6,170 
  ^ The First Marblehead Corp. 359,729  5,914 
    Transatlantic Holdings, Inc. 86,274  5,884 
    Bank of Hawaii Corp. 111,900  5,636 
    Ventas, Inc. REIT 123,600  5,463 
    The Blackstone Group L.P. 295,540  5,423 
    Forest City Enterprise Class A 135,900  5,416 
  * Western Alliance Bancorp 331,900  5,327 
  * IntercontinentalExchange Inc. 37,900  5,304 
    Weingarten Realty Investors REIT 155,000  5,211 
    Federal Realty Investment Trust REIT 64,100  4,731 
  * Alleghany Corp. 11,937  4,512 
    Nationwide Health Properties, Inc. REIT 140,400  4,431 
    National Financial Partners Corp. 113,260  4,089 
    Taubman Co. REIT 81,300  4,077 
  * SVB Financial Group 83,100  4,022 
    Erie Indemnity Co. Class A 74,600  3,777 
    Tanger Factory Outlet Centers, Inc. REIT 96,800  3,637 
  * Dollar Financial Corp. 142,970  3,600 
    Mid-America Apartment Communities, Inc. REIT 78,200  3,582 
    Highwood Properties, Inc. REIT 117,300  3,511 
    First Industrial Realty Trust REIT 94,400  3,288 
    Post Properties, Inc. REIT 67,700  2,862 
    The Hanover Insurance Group Inc. 57,510  2,620 
    East West Bancorp, Inc. 100,000  2,406 
    Glimcher Realty Trust REIT 178,200  2,363 
    Apartment Investment & Management Co. Class A REIT 59,000  2,339 
    Sun Communities, Inc. REIT 117,600  2,273 
    IPC Holdings Ltd. 85,000  2,187 
  * Stifel Financial Corp. 45,939  1,991 
  ^ Cohen & Steers, Inc. 69,000  1,966 
    SL Green Realty Corp. REIT 19,556  1,815 
    UDR, Inc. REIT 77,200  1,762 
  * Aldabra 2 Acquisition Corp. 179,000  1,724 
    Grubb & Ellis Co. 395,100  1,723 
    Douglas Emmett, Inc. REIT 72,912  1,666 
    Ramco-Gershenson Properties Trust REIT 72,754  1,622 
  ^ The St. Joe Co. 39,300  1,526 
    City Bank Lynnwood (WA) 67,200  1,472 
    Equity Lifestyle Properties, Inc. REIT 32,800  1,432 
    Duke Realty Corp. REIT 55,800  1,319 
    Entertainment Properties Trust REIT 25,800  1,277 
    Odyssey Re Holdings Corp. 33,100  1,257 
    City Holding Co. 29,636  1,139 
    Mercury General Corp. 21,200  1,020 
    HCP, Inc. REIT 32,700  994 
  * Signature Bank 23,568  790 
  * Penson Worldwide, Inc. 78,300  759 
  * World Acceptance Corp. 24,800  743 
    NYMAGIC, Inc. 31,620  741 
  * Tejon Ranch Co. 15,000  567 
  ^ Frontier Financial Corp. 26,700  544 
    Kilroy Realty Corp. REIT 10,600  520 
  * Knight Capital Group, Inc. Class A 27,753  465 
  * Alexander's, Inc. REIT 1,300  455 
  ^ Westamerica Bancorporation 9,100  451 
    Amtrust Financial Services Inc. 25,800  405 
  * Franklin Bank Corp. 65,090  383 
  ^ Portfolio Recovery Associates, Inc. 9,700  353 
  * Hallmark Financial Services, Inc. 27,080  352 
    TrustCo Bank NY 33,200  342 
    Cathay General Bancorp 12,900  334 
    S & T Bancorp, Inc. 10,700  333 
    Gamco Investors Inc. Class A 5,090  302 
  * First Cash Financial Services, Inc. 29,500  295 
    SWS Group, Inc. 18,460  283 
    Universal Insurance Holdings, Inc. 49,460  262 
  * Texas Capital Bancshares, Inc. 14,100  246 
    Sierra Bancorp 9,425  220 
    Suffolk Bancorp 6,200  189 
    Tompkins Trustco, Inc. 4,300  181 
    TriCo Bancshares 9,499  170 
  * ZipRealty, Inc. 28,445  149 
    Fidelity Southern Corp. 12,990  123 
    Saul Centers, Inc. REIT 2,300  118 
    First Busey Corp. 5,200  113 
    Integra Bank Corp. 7,216  107 
    Southwest Bancorp, Inc. 5,601  99 
  * NewStar Financial, Inc. 10,400  90 
  * Bridge Capital Holdings 3,800  82 
    Urstadt Biddle Properties Class A REIT 5,220  81 
  * Seabright Insurance Holdings, Inc. 3,342  49 
    FNB Corp. (VA) 1,690  43 
  * Reis, Inc. 4,690  33 
    Federal Agricultural Mortgage Corp. Class C 820  23 
    Lakeland Financial Corp. 1,000  22 
    Wesco Financial Corp. 40  16 
    United Western Bancorp. Inc. 530  10 
    Pathfinder Bancorp, Inc. 580 
  * Robert Realty Investors, Inc. 870 
    Peoples Bancorp of North Carolina 366 
    Meta Financial Group, Inc. 109 
    Brooke Corp. 369 
  * Investors Capital Holdings, Ltd. 400 
    First State Bancorporation 100 

         729,290 

    Health Care (17.6%)
  * Cephalon, Inc. 870,455  57,128 
  * Henry Schein, Inc. 974,542  56,650 
  * Covance, Inc. 607,155  50,491 
  * IDEXX Laboratories Corp. 850,800  47,960 
    DENTSPLY International Inc. 1,125,989  46,515 
  * Waters Corp. 807,413  46,386 
  * Respironics, Inc. 691,310  45,288 
    Pharmaceutical Product Development, Inc. 940,696  40,789 
  * Alkermes, Inc. 2,865,588  38,170 
  * Pediatrix Medical Group, Inc. 524,520  35,715 
  * Intuitive Surgical, Inc. 137,364  34,890 
  * Barr Pharmaceuticals Inc. 635,995  33,193 
  * Hologic, Inc. 508,823  32,748 
  * Healthways, Inc. 572,230  32,217 
  * Xenoport Inc. 492,969  30,249 
  * Axcan Pharma Inc. 1,243,200  28,246 
  * Isis Pharmaceuticals, Inc. 1,809,149  28,223 
  * Qiagen NV 1,378,400  28,119 
  * Patterson Cos. 869,950  27,873 
  * Invitrogen Corp. 319,297  27,354 
  * Millennium Pharmaceuticals, Inc. 1,783,748  27,059 
  * Endo Pharmaceuticals Holdings, Inc. 1,028,550  26,886 
  * Rigel Pharmaceuticals, Inc. 955,800  26,313 
  * Medarex, Inc. 2,267,600  22,653 
  * PDL BioPharma Inc. 1,429,900  21,348 
  * Nektar Therapeutics 2,926,700  20,867 
  * Sun Healthcare Group Inc. 1,116,900  19,244 
  * The TriZetto Group, Inc. 964,000  18,817 
  * Regeneron Pharmaceuticals, Inc. 925,764  18,774 
  * Mindray Medical International Ltd. ADR 548,900  18,717 
  * Edwards Lifesciences Corp. 404,500  18,716 
  * Amylin Pharmaceuticals, Inc. 625,200  18,537 
  * Haemonetics Corp. 307,200  18,383 
  * Align Technology, Inc. 1,536,190  18,096 
  * Gen-Probe Inc. 313,400  17,911 
  * Health Net Inc. 384,400  17,871 
  * Community Health Systems, Inc. 537,000  17,238 
  * Kinetic Concepts, Inc. 342,240  17,037 
  * inVentiv Health, Inc. 504,670  16,599 
  * Affymetrix, Inc. 775,000  15,547 
    Perrigo Co. 499,506  15,405 
  * LifeCell Corp. 380,860  15,048 
  * Lincare Holdings, Inc. 447,448  14,949 
  * Psychiatric Solutions, Inc. 491,740  14,836 
  * Human Genome Sciences, Inc. 2,627,800  14,663 
  * Seattle Genetics, Inc. 1,558,504  14,276 
    Dr. Reddy's Laboratories Ltd. ADR 979,500  13,566 
  * ResMed Inc. 287,670  13,400 
  * Immucor Inc. 449,246  12,956 
  * Matria Healthcare, Inc. 447,353  12,911 
    Hikma Pharmaceuticals PLC 1,372,514  12,828 
  * MWI Veterinary Supply Inc. 326,243  12,472 
  * Inverness Medical Innovations, Inc. 266,700  12,015 
  * Amedisys Inc. 277,348  11,823 
  * BioMarin Pharmaceutical Inc. 317,000  11,748 
  * Celgene Corp. 208,670  11,708 
  * HLTH Corp. 1,022,700  11,444 
    Chemed Corp. 216,100  11,071 
  * Bruker BioSciences Corp. 1,073,164  11,000 
    PerkinElmer, Inc. 437,038  10,878 
    Cooper Cos., Inc. 271,180  10,679 
  * Cyberonics, Inc. 889,200  10,670 
  * Cypress Bioscience, Inc. 1,255,600  10,534 
  * Varian, Inc. 191,137  10,369 
  * Cerner Corp. 197,127  10,329 
  * VCA Antech, Inc. 243,200  9,402 
  * Onyx Pharmaceuticals, Inc. 196,700  9,349 
  * Charles River Laboratories, Inc. 143,400  8,905 
  * DaVita, Inc. 163,685  8,733 
  * PAREXEL International Corp. 158,329  8,615 
  * Durect Corp. 1,671,700  8,509 
  * Exelixis, Inc. 1,108,300  8,113 
  * Sciele Pharma, Inc. 333,540  7,978 
  * Varian Medical Systems, Inc. 150,595  7,829 
  * ICON PLC ADR 118,108  7,403 
  * Salix Pharmaceuticals, Ltd. 1,047,971  7,283 
  * Alexion Pharmaceuticals, Inc. 107,200  7,002 
  * The Medicines Co. 391,500  6,702 
  * OSI Pharmaceuticals, Inc. 166,800  6,652 
  * Luminex Corp. 426,500  6,385 
  * Myriad Genetics, Inc. 145,100  6,241 
  * Warner Chilcott Ltd. 367,500  6,229 
  * Kindred Healthcare, Inc. 223,500  6,155 
  * Noven Pharmaceuticals, Inc. 449,750  6,040 
    West Pharmaceutical Services, Inc. 153,000  5,982 
  * Impax Laboratories, Inc. 570,900  5,923 
  * Air Methods Corp. 126,156  5,788 
  * Alnylam Pharmaceuticals Inc. 191,700  5,759 
  * Integra LifeSciences Holdings 132,708  5,521 
    Meridian Bioscience Inc. 174,950  5,495 
  * Techne Corp. 83,500  5,428 
  * Orthofix International N.V. 93,997  5,140 
  ^ Mentor Corp. 147,800  5,117 
  * Apria Healthcare Group Inc. 237,727  5,045 
  * K-V Pharmaceutical Co. Class A 187,200  4,863 
  * CV Therapeutics, Inc. 569,700  4,774 
    STERIS Corp. 191,000  4,733 
  * MedCath Corp. 189,700  4,720 
  * Kendle International Inc. 111,068  4,708 
  * Emergency Medical Services LP Class A 148,200  4,560 
  * ImmunoGen, Inc. 1,286,000  4,475 
  * Cubist Pharmaceuticals, Inc. 263,070  4,470 
  * Sunrise Senior Living, Inc. 152,580  4,381 
    Medicis Pharmaceutical Corp. 207,400  4,212 
  * Cynosure Inc. 167,060  4,148 
  * QLT Inc. 1,076,500  3,951 
    IMS Health, Inc. 165,300  3,949 
 *^ Enzon Pharmaceuticals, Inc. 461,700  3,864 
  * Incyte Corp. 314,350  3,766 
  * Vertex Pharmaceuticals, Inc. 183,947  3,745 
  * Eurand NV 259,765  3,683 
  * Quidel Corp. 229,960  3,626 
  * Zoll Medical Corp. 133,148  3,550 
  * Res-Care, Inc. 157,548  3,524 
  * Pain Therapeutics, Inc. 402,032  3,482 
  * Par Pharmaceutical Cos. Inc. 175,300  3,362 
  * XOMA Ltd. 1,200,700  3,242 
  * Dionex Corp. 44,900  3,147 
  * Ventana Medical Systems, Inc. 33,858  3,015 
  * Sierra Health Services, Inc. 70,000  3,009 
  * Cytokinetics, Inc. 890,149  2,964 
  * HMS Holdings Corp. 90,217  2,851 
  * Natus Medical Inc. 163,520  2,813 
  * Gentiva Health Services, Inc. 127,679  2,360 
  * United Therapeutics Corp. 27,195  2,284 
  * Albany Molecular Research, Inc. 210,687  2,267 
  * Pharmion Corp. 32,800  2,262 
  * Cell Genesys, Inc. 1,210,500  2,191 
  * Masimo Corp. 59,325  2,117 
 *^ GTx, Inc. 184,500  2,046 
    Beckman Coulter, Inc. 29,160  1,939 
  * Skilled Healthcare Group Inc. 137,600  1,913 
  * CryoLife Inc. 262,055  1,821 
  * Eclipsys Corp. 68,945  1,775 
  * Pharmanet Development Group, Inc. 39,949  1,628 
  * Nuvelo, Inc. 1,039,800  1,560 
    Mylan Inc. 102,590  1,530 
  * Angiodynamics, Inc. 72,175  1,463 
  * Healthspring, Inc. 68,900  1,426 
  * Bio-Rad Laboratories, Inc. Class A 13,900  1,323 
  * Sonic Innovations, Inc. 206,804  1,299 
    Vital Signs, Inc. 26,674  1,294 
  * CONMED Corp. 52,414  1,274 
  * Caraco Pharmaceutical Laboratories, Ltd. 77,783  1,195 
  * Harvard Bioscience, Inc. 265,386  1,168 
 *^ Pozen Inc. 84,800  1,038 
    Analogic Corp. 17,150  1,013 
  * Hanger Orthopedic Group, Inc. 106,010  983 
  * Arena Pharmaceuticals, Inc. 130,000  941 
  * Millipore Corp. 11,800  828 
  * IRIS International, Inc. 38,777  696 
  * Centene Corp. 29,000  694 
  * NPS Pharmaceuticals Inc. 153,175  605 
  * RadNet, Inc. 61,102  551 
  * RehabCare Group, Inc. 26,070  547 
  * Radiation Therapy Services, Inc. 16,400  474 
  * IntegraMed America, Inc. 38,528  451 
  * Bio-Reference Laboratories, Inc. 15,826  434 
  * Osteotech, Inc. 65,674  386 
    National Healthcare Corp. 6,926  347 
  * Replidyne, Inc. 164,151  345 
  * Illumina, Inc. 5,300  338 
  * eResearch Technology, Inc. 29,000  282 
    Atrion Corp. 2,111  259 
  * Hi-Tech Pharmacal Co., Inc. 22,500  243 
  * American Dental Partners, Inc. 27,342  242 
  * Visicu, Inc. 19,400  232 
  * Obagi Medical Products, Inc. 10,600  158 
  * King Pharmaceuticals, Inc. 12,109  127 
  * Anika Resh Inc. 8,580  94 
  * Bradley Pharmaceuticals, Inc. 4,700  93 
  * Angeion Corp. 11,890  93 
  * MTS Medication Tech 6,293  78 
  * A.D.A.M., Inc. 8,760  64 
  * Vivus, Inc. 7,900  48 
  * Medical Staffing Network Holdings, Inc. 8,099  47 
  * ArthroCare Corp. 1,100  44 
  * SonoSite, Inc. 760  26 
  * Watson Pharmaceuticals, Inc. 1,000  26 
  * Vascular Solutions, Inc. 3,381  20 
    Birner Dental Management Services, Inc. 200 
  * Bioanalytical Systems, Inc. 480 
  * Celsion Corp. 531 

         1,837,698 

    Industrials (16.4%)
    The Dun & Bradstreet Corp. 833,000  76,619 
* 1 The Advisory Board Co. 1,016,040  64,742 
    Chicago Bridge & Iron Co. N.V. 1,067,505  47,493 
  * Stericycle, Inc. 727,050  43,085 
    The Manitowoc Co., Inc. 1,113,460  42,445 
  * Jacobs Engineering Group Inc. 551,500  42,157 
    MSC Industrial Direct Co., Inc. Class A 924,940  37,987 
    Healthcare Services Group, Inc. 1,518,050  36,828 
  * Corrections Corp. of America 1,290,921  34,261 
    Donaldson Co., Inc. 790,700  33,130 
  * FTI Consulting, Inc. 575,655  31,839 
    Equifax, Inc. 751,054  27,857 
  * Covanta Holding Corp. 1,025,900  26,048 
    SPX Corp. 240,270  24,171 
  * Tetra Tech, Inc. 1,188,093  23,394 
  * BE Aerospace, Inc. 587,856  22,697 
  ^ Knight Transportation, Inc. 1,296,600  22,250 
  * Huron Consulting Group Inc. 301,236  21,635 
    Ametek, Inc. 466,320  20,537 
    Werner Enterprises, Inc. 986,900  20,103 
  * AerCap Holdings NV 1,078,160  19,903 
    McGrath RentCorp 821,300  19,128 
    Harsco Corp. 332,990  18,954 
    Albany International Corp. 540,900  18,937 
  * McDermott International, Inc. 400,050  18,874 
    J.B. Hunt Transport Services, Inc. 593,500  18,458 
  * ChoicePoint Inc. 535,920  17,841 
    Con-way, Inc. 357,600  17,412 
  * First Solar, Inc. 95,200  17,305 
    Heartland Express, Inc. 1,031,220  16,757 
  * General Cable Corp. 283,265  16,432 
    Kennametal, Inc. 528,680  16,193 
  * RBC Bearings Inc. 540,828  16,192 
  * Allied Waste Industries, Inc. 1,641,150  16,165 
  * Alliant Techsystems, Inc. 152,550  16,147 
    Lincoln Electric Holdings, Inc. 258,173  15,916 
    Triumph Group, Inc. 288,000  15,552 
  * JA Solar Holdings Co., Ltd. ADR 300,000  15,249 
    Watson Wyatt & Co. Holdings 303,575  14,921 
    Roper Industries Inc. 256,425  14,339 
  * GeoEye Inc. 405,001  14,159 
  * AirTran Holdings, Inc. 1,635,200  14,112 
  * Waste Connections, Inc. 481,000  14,026 
    Pall Corp. 379,300  13,992 
    Barnes Group, Inc. 499,370  13,308 
  * Outotec OYJ 266,677  12,949 
    Steelcase Inc. 829,637  12,718 
* 2 Suntech Power Holdings Co., Ltd. ADR 229,800  12,577 
  * Geo Group Inc. 525,301  12,565 
  * Kenexa Corp. 707,100  12,558 
    China Everbright International, Ltd. 29,931,000  12,498 
    UTI Worldwide, Inc. 666,445  12,463 
  * Quanta Services, Inc. 555,625  12,179 
    Precision Castparts Corp. 102,514  11,666 
  * AGCO Corp. 185,735  11,185 
  * Airasia Bhd. 20,949,800  10,640 
  * Copart, Inc. 248,200  10,146 
 *^ RSC Holdings Inc. 869,430  9,564 
  * Stanley Inc. 328,030  9,145 
    Acuity Brands, Inc. 197,633  8,994 
  * IHS Inc. Class A 144,300  8,938 
  * II-VI, Inc. 273,800  8,877 
 *^ SunPower Corp. Class A 127,100  8,781 
  * Perini Corp. 245,345  8,575 
  * TeleTech Holdings, Inc. 417,400  8,235 
  * Thomas & Betts Corp. 178,000  8,055 
    Watsco, Inc. 217,700  8,029 
    Resources Connection, Inc. 378,000  7,912 
    UAL Corp. 205,000  7,780 
  * Hertz Global Holdings Inc. 484,042  7,222 
    Walter Industries, Inc. 171,366  7,184 
  * Hansen Transmissions 1,500,000  7,159 
  * Orbital Sciences Corp. 306,837  7,149 
    Hubbell Inc. Class B 135,800  6,475 
    Robbins & Myers, Inc. 97,540  6,465 
    Horizon Lines Inc. 337,350  6,339 
    Trinity Industries, Inc. 220,460  6,243 
    The Toro Co. 125,800  6,207 
  * Kansas City Southern 170,700  6,125 
    Belden Inc. 144,000  6,091 
    The Corporate Executive Board Co. 101,800  5,859 
  * United Stationers, Inc. 104,200  5,758 
  * Michael Baker Corp. 163,100  5,583 
    Regal-Beloit Corp. 147,200  5,582 
    Skywest, Inc. 213,260  5,549 
    Interface, Inc. 347,550  5,547 
  * Hurco Cos., Inc. 150,065  5,488 
  * The Middleby Corp. 89,780  5,352 
  * AAR Corp. 181,340  5,342 
  * Spherion Corp. 788,905  5,270 
  * Avis Budget Group, Inc. 391,600  5,228 
  * TrueBlue, Inc. 348,428  4,972 
  * Flow International Corp. 533,400  4,971 
    Carlisle Co., Inc. 148,880  4,958 
    GATX Corp. 131,800  4,956 
  * AZZ Inc. 144,200  4,870 
  * Ritchie Brothers Auctioneers Inc. 58,700  4,830 
    Aircastle Ltd. 192,200  4,724 
    Lennox International Inc. 127,040  4,721 
  * Genesee & Wyoming Inc. Class A 172,100  4,700 
  * Kirby Corp. 102,100  4,695 
  * Pinnacle Airlines Corp. 346,549  4,658 
    Apogee Enterprises, Inc. 260,052  4,538 
  * TransDigm Group, Inc. 104,460  4,323 
  * URS Corp. 96,357  4,230 
    American Ecology Corp. 181,965  4,163 
    Woodward Governor Co. 64,200  4,030 
  * Gardner Denver Inc. 124,200  4,029 
 *^ Taser International Inc. 338,300  3,887 
    Valmont Industries, Inc. 45,100  3,775 
    Teleflex Inc. 63,659  3,764 
  * Chart Industries, Inc. 146,000  3,695 
  * Kforce Inc. 409,329  3,643 
    Cummins Inc. 75,400  3,640 
    Crane Co. 85,088  3,478 
  * Layne Christensen Co. 90,469  3,338 
    Applied Industrial Technology, Inc. 109,125  3,294 
  * Teledyne Technologies, Inc. 62,690  3,237 
  * LECG Corp. 374,848  3,182 
    Oshkosh Truck Corp. 69,400  3,176 
  * Shaw Group, Inc. 56,164  3,172 
    Graco, Inc. 90,800  3,107 
    Mueller Industries Inc. 107,100  2,999 
  * Delta Air Lines Inc. 170,900  2,876 
    Kelly Services, Inc. Class A 164,644  2,835 
  * Aecom Technology Corp. 112,234  2,764 
  * Mobile Mini, Inc. 175,990  2,675 
    Eagle Bulk Shipping Inc. 104,000  2,571 
    Kaydon Corp. 57,600  2,517 
    Bowne & Co., Inc. 201,099  2,474 
  * Astec Industries, Inc. 79,545  2,456 
  * Ceradyne, Inc. 49,200  2,369 
  * CRA International Inc. 54,787  2,287 
  * Dynamex Inc. 91,378  2,276 
  ^ HNI Corp. 63,500  2,137 
  * Continental Airlines, Inc. Class B 77,400  2,106 
  * Furmanite Corp. 209,965  2,100 
    Manpower Inc. 37,005  2,082 
    Kaman Corp. Class A 68,468  2,023 
    Raven Industries, Inc. 67,300  2,020 
    Fastenal Co. 49,500  2,000 
  * GrafTech International Ltd. 132,500  1,994 
    The Timken Co. 64,900  1,962 
    IDEX Corp. 61,600  1,924 
    Dynamic Materials Corp. 30,900  1,656 
  * Esterline Technologies Corp. 34,400  1,603 
  * CBIZ Inc. 168,992  1,590 
    Flowserve Corp. 17,800  1,462 
    ABM Industries Inc. 70,000  1,450 
  * M&F Worldwide Corp. 36,900  1,442 
    UAP Holding Corp. 37,500  1,438 
    Mine Safety Appliances Co. 31,500  1,406 
    Waste Industries USA, Inc. 38,684  1,399 
    Rollins, Inc. 74,175  1,320 
 *^ Evergreen Solar, Inc. 107,900  1,315 
  * Columbus McKinnon Corp. 50,100  1,281 
    CDI Corp. 65,480  1,274 
    Cubic Corp. 47,320  1,271 
  * GP Strategies Corp. 116,440  1,238 
  * Terex Corp. 19,400  1,140 
    Kimball International, Inc. Class B 91,010  1,127 
    AAON, Inc. 60,718  1,081 
  ^ Simpson Manufacturing Co. 38,000  1,047 
    VSE Corp. 36,468  1,009 
  * Goodman Global, Inc. 38,700  972 
    Heidrick & Struggles International, Inc. 34,700  954 
  * Allegiant Travel Co. 28,500  891 
  * Copa Holdings SA Class A 18,800  734 
  * Ducommun, Inc. 23,200  733 
    Barrett Business Services, Inc. 40,607  728 
    Herman Miller, Inc. 22,500  715 
  * EMCOR Group, Inc. 31,600  693 
  * Team, Inc. 21,500  645 
    Baldor Electric Co. 20,600  624 
  * KBR Inc. 19,200  607 
    CLARCOR Inc. 15,900  596 
    IKON Office Solutions, Inc. 71,400  584 
  * School Specialty, Inc. 17,500  568 
    Comfort Systems USA, Inc. 45,020  552 
    The Eastern Co. 31,450  543 
  * Midwest Air Group Inc. 31,000  526 
  * Exponent, Inc. 16,570  510 
  * Spirit Aerosystems Holdings Inc. 17,300  478 
    NACCO Industries, Inc. Class A 4,655  466 
    Tennant Co. 13,986  461 
    Hardinge, Inc. 26,767  456 
    Genco Shipping and Trading Ltd. 8,800  434 
    Sun Hydraulics Corp. 16,000  368 
  * Westaff Inc. 94,500  364 
  * Park-Ohio Holdings Corp. 15,223  340 
  * Learning Tree International, Inc. 18,318  330 
    Forward Air Corp. 10,200  316 
  * Edac Technologies Corp. 33,598  311 
    Curtiss-Wright Corp. 7,266  303 
    Landstar System, Inc. 5,900  295 
  * North American Galvanizing & Coatings Inc. 58,200  294 
 *^ Innovative Solutions and Support, Inc. 24,800  278 
  * Huttig Building Products, Inc. 65,750  262 
  * Herley Industries Inc. 20,494  254 
    HEICO Corp. 5,600  249 
  * SL Industries, Inc. 10,730  216 
  * JetBlue Airways Corp. 31,100  215 
  * PeopleSupport Inc. 15,300  191 
  * Gehl Co. 9,857  174 
  * Industrial Services of America, Inc. 21,300  154 
  * Meadow Valley Corp. 8,320  92 
  * Nashua Corp. 7,407  75 
  * MTC Technologies, Inc. 3,100  73 
    Multi-Color Corp. 3,450  73 
  * Industrial Distribution Group, Inc. 6,831  67 
  * K-Tron International, Inc 520  57 
    Xerium Technologies Inc. 11,600  55 
  * Taylor Devices Inc. 8,030  39 
  * Kadant Inc. 1,290  34 
    Tech/Ops Sevcon, Inc. 2,820  23 
    Ampco-Pittsburgh Corp. 600  23 
  * First Advantage Corp. Class A 1,300  21 
  * Nortech Systems, Inc. 2,500  13 
  * A.T. Cross Co. Class A 1,180  10 
  * National Technical Systems, Inc. 1,481 
    Angelica Corp. 443 
    Lawson Products, Inc. 140 
    Virco Manufacturing Corp. 620 

         1,714,612 

    Information Technology (19.8%)
  * Mettler-Toledo International Inc. 618,800  61,447 
  * Microsemi Corp. 2,512,390  57,082 
    FactSet Research Systems Inc. 799,003  44,688 
  * Red Hat, Inc. 2,361,113  44,106 
  * BMC Software, Inc. 1,324,761  42,445 
  * Varian Semiconductor Equipment Associates, Inc. 1,271,696  40,961 
  * DST Systems, Inc. 535,803  38,310 
  * McAfee Inc. 985,158  33,160 
  * Blue Coat Systems, Inc. 1,212,534  32,581 
  * Ciena Corp. 1,192,735  32,359 
  * MICROS Systems, Inc. 525,331  32,350 
  * Ariba, Inc. 3,146,945  31,375 
  * salesforce.com, inc. 554,500  28,989 
  * FLIR Systems, Inc. 953,784  28,881 
  * Concur Technologies, Inc. 802,692  28,142 
  ^ Heartland Payment Systems, Inc. 1,157,580  28,106 
  * FEI Co. 1,200,033  27,193 
  * Ingram Micro, Inc. Class A 1,484,800  26,400 
  * Avnet, Inc. 716,840  25,527 
  * Verigy Ltd. 1,160,000  24,221 
  * VeriFone Holdings, Inc. 1,232,000  24,110 
  * Synopsys, Inc. 1,079,500  23,771 
    Syntel, Inc. 785,132  23,263 
    Intersil Corp. 1,004,440  23,132 
  * Riverbed Technology, Inc. 1,026,190  22,935 
  * Cadence Design Systems, Inc. 2,208,669  22,418 
  * Arrow Electronics, Inc. 630,254  21,567 
  * ViaSat, Inc. 1,019,600  21,177 
  * Euronet Worldwide, Inc. 787,900  20,832 
  * DealerTrack Holdings Inc. 762,606  20,560 
    Global Payments Inc. 539,085  20,162 
  * Cymer, Inc. 733,200  19,804 
  * Iron Mountain, Inc. 572,500  19,688 
  * ON Semiconductor Corp. 2,981,797  19,322 
  * Polycom, Inc. 762,195  19,245 
  * Littelfuse, Inc. 624,600  18,982 
    Amphenol Corp. 465,235  18,581 
  * Fairchild Semiconductor International, Inc. 1,473,700  18,053 
  * NICE-Systems Ltd. ADR 588,567  18,016 
  * Trimble Navigation Ltd. 659,900  17,454 
  * Sapient Corp. 2,487,868  17,440 
  * Comverse Technology, Inc. 1,062,700  17,359 
  * Cypress Semiconductor Corp. 790,200  16,792 
  * Alliance Data Systems Corp. 321,742  16,270 
  * PMC Sierra Inc. 3,160,500  14,823 
  * ADC Telecommunications, Inc. 993,400  14,692 
  * ATMI, Inc. 553,695  14,562 
  * Sycamore Networks, Inc. 4,235,300  14,315 
  * ANSYS, Inc. 407,434  14,224 
  * Electronics for Imaging, Inc. 957,058  14,126 
  * Tessera Technologies, Inc. 351,460  13,767 
  * NAVTEQ Corp. 183,400  13,553 
  * VistaPrint Ltd. 324,145  12,061 
  * Hutchinson Technology, Inc. 760,400  11,992 
  * Brocade Communications Systems, Inc. 1,733,476  11,944 
  * Powerwave Technologies, Inc. 3,057,600  11,619 
 *^ Business Objects S.A. ADR 184,735  11,485 
  * Teradyne, Inc. 1,021,599  11,207 
  * Hewitt Associates, Inc. 300,445  11,168 
  * Insight Enterprises, Inc. 640,815  11,067 
  * MPS Group, Inc. 1,075,384  10,808 
  * Harris Stratex Networks, Inc. Class A 964,375  10,502 
  * Informatica Corp. 543,114  10,488 
  * Spreadtrum Communications, Inc. 1,083,000  10,289 
  * Cognizant Technology Solutions Corp. 361,923  10,098 
  * Cogent Inc. 1,019,700  10,054 
  * Emulex Corp. 643,477  10,038 
  * Activision, Inc. 385,300  9,968 
  * ValueClick, Inc. 449,635  9,816 
  * CommScope, Inc. 219,550  9,737 
  * Western Digital Corp. 362,550  9,589 
  * Progress Software Corp. 322,991  9,535 
    Jack Henry & Associates Inc. 377,000  9,267 
  * VeriSign, Inc. 267,895  9,087 
  * Acme Packet, Inc. 917,926  8,830 
  * Dolby Laboratories Inc. 203,356  8,763 
  * Mentor Graphics Corp. 1,049,000  8,654 
  * SPSS, Inc. 249,725  8,253 
  * Lawson Software, Inc. 948,428  8,242 
    Total System Services, Inc. 347,004  8,016 
    Broadridge Financial Solutions LLC 369,500  8,003 
  * Interwoven Inc. 619,111  7,844 
  * Sigma Designs, Inc. 173,282  7,836 
  * Sonic Solutions, Inc. 833,600  7,469 
  * Sybase, Inc. 253,751  7,161 
  * Novatel Wireless, Inc. 446,792  7,149 
  * Harmonic, Inc. 649,787  7,096 
  * RF Micro Devices, Inc. 2,196,300  7,094 
  * Atheros Communications, Inc. 259,250  7,080 
  * DemandTec, Inc. 545,700  7,001 
    ADTRAN Inc. 326,650  6,798 
  * Advanced Analogic Technologies, Inc. 989,800  6,671 
  * Nuance Communications, Inc. 414,700  6,590 
  * Anixter International Inc. 92,500  6,481 
  * Lexmark International, Inc. 178,000  6,445 
  * Vishay Intertechnology, Inc. 608,630  6,385 
  * Novellus Systems, Inc. 267,636  6,359 
    Marchex, Inc. 792,100  6,289 
  * NeuStar, Inc. Class A 209,823  6,234 
  * Equinix, Inc. 82,300  6,216 
  * Vignette Corp. 432,400  6,084 
  * Taleo Corp. Class A 286,150  6,046 
  * Teradata Corp. 253,460  6,037 
    Fidelity National Information Services, Inc. 140,000  5,943 
  * PROS Holdings, Inc. 381,900  5,862 
  * Affiliated Computer Services, Inc. Class A 120,120  5,856 
  * Aspen Technologies, Inc. 401,940  5,647 
  * Quest Software, Inc. 375,713  5,617 
  * Comtech Telecommunications Corp. 123,921  5,552 
 *^ Data Domain, Inc. 243,345  5,485 
  * Omniture, Inc. 220,993  5,463 
  * Rofin-Sinar Technologies Inc. 127,552  5,422 
  * Aruba Networks, Inc. 572,100  5,412 
  * Network Appliance, Inc. 229,975  5,340 
  * Semtech Corp. 411,900  5,260 
  * j2 Global Communications, Inc. 233,644  5,119 
  * OpNext, Inc. 990,540  5,111 
  * JDA Software Group, Inc. 283,054  5,036 
  * Diodes Inc. 215,775  4,995 
  * BEA Systems, Inc. 265,300  4,958 
    United Online, Inc. 443,322  4,952 
 *^ Netlogic Microsystems Inc. 189,650  4,931 
  * Skyworks Solutions, Inc. 611,625  4,924 
  * MEMC Electronic Materials, Inc. 67,905  4,852 
  * Ulticom, Inc. 676,000  4,850 
    National Semiconductor Corp. 260,294  4,797 
  * MRV Communications Inc. 2,707,900  4,793 
  * Compuware Corp. 561,900  4,776 
  * MKS Instruments, Inc. 255,510  4,752 
  * AuthenTec, Inc. 380,000  4,731 
  * The Ultimate Software Group, Inc. 173,424  4,691 
  * Avocent Corp. 278,913  4,630 
  * Amkor Technology, Inc. 597,502  4,565 
  * Bookham, Inc. 2,477,100  4,484 
  * EPIQ Systems, Inc. 295,080  4,352 
  * Digital River, Inc. 115,430  4,329 
    MAXIMUS, Inc. 120,759  4,260 
  * CACI International, Inc. 97,600  4,254 
  * Greenfield Online, Inc. 330,200  4,246 
  * Zoran Corp. 354,216  4,180 
    MTS Systems Corp. 121,745  4,092 
  * EMS Technologies, Inc. 143,000  3,930 
 *^ WebMD Health Corp. Class A 102,600  3,792 
  * Vocus, Inc. 128,850  3,791 
  * Sohu.com Inc. 75,200  3,499 
    Fair Isaac, Inc. 132,100  3,369 
  * Chordiant Software, Inc. 383,183  3,341 
  * Network Equipment Technologies, Inc. 428,100  3,185 
  * FARO Technologies, Inc. 132,482  3,164 
  * VASCO Data Security International, Inc. 163,893  3,109 
  * Net 1 UEPS Technologies, Inc. 105,000  3,011 
  * AMIS Holdings Inc. 410,421  3,000 
  * NETGEAR, Inc. 111,906  2,983 
  * SAVVIS, Inc. 147,200  2,973 
  * Monolithic Power Systems 189,843  2,969 
    infoUSA Inc. 315,600  2,774 
  * Intevac, Inc. 252,100  2,745 
  * Electro Scientific Industries, Inc. 162,483  2,671 
  * Radiant Systems, Inc. 217,255  2,642 
  * Stratasys, Inc. 116,536  2,575 
  * Manhattan Associates, Inc. 102,286  2,536 
  * Akamai Technologies, Inc. 83,900  2,534 
  * ManTech International Corp. 58,911  2,409 
  * iGATE Corp. 285,800  2,366 
  * Novell, Inc. 363,100  2,309 
  * Synchronoss Technologies, Inc. 104,600  2,228 
  * Cree, Inc. 73,300  2,166 
  * Integrated Device Technology Inc. 282,300  2,103 
  * Silicon Laboratories Inc. 66,200  2,068 
  * Mattson Technology, Inc. 353,573  2,015 
  * NetScout Systems, Inc. 189,605  1,860 
  * Standard Microsystem Corp. 60,411  1,807 
  * Phoenix Technologies Ltd. 118,024  1,794 
  * AsiaInfo Holdings, Inc. 201,626  1,766 
  * Cirrus Logic, Inc. 404,746  1,720 
  * Citrix Systems, Inc. 48,000  1,662 
  * S1 Corp. 275,898  1,562 
  * Microtune, Inc. 266,995  1,559 
    AVX Corp. 112,220  1,462 
  * Ansoft Corp. 68,700  1,459 
  * FalconStor Software, Inc. 163,910  1,446 
  * PC Connection, Inc. 111,012  1,398 
  * Actuate Software Corp. 237,484  1,354 
  * iBasis, Inc. 241,500  1,352 
    TheStreet.com, Inc. 116,800  1,296 
  * Foundry Networks, Inc. 90,500  1,249 
  * SonicWALL, Inc. 136,144  1,195 
  * Ceva, Inc. 129,311  1,093 
  * Parametric Technology Corp. 65,500  1,077 
  * Dycom Industries, Inc. 45,300  1,070 
  * LAM Research Corp. 27,200  1,044 
  * Oplink Communications, Inc. 78,256  999 
  * The Hackett Group Inc. 237,391  933 
    Integral Systems, Inc. 35,924  909 
  * Pericom Semiconductor Corp. 65,063  882 
  * Gartner, Inc. Class A 59,400  882 
  * Checkpoint Systems, Inc. 36,652  871 
  * Synaptics Inc. 31,800  843 
  * Spectrum Control, Inc. 91,879  843 
  * International Rectifier Corp. 30,000  835 
  * SRA International, Inc. 29,500  809 
  * Keynote Systems Inc. 79,766  781 
  * MicroStrategy Inc. 10,200  744 
  * TriQuint Semiconductor, Inc. 156,330  741 
 *^ Airvana, Inc. 139,300  729 
  * Ciber, Inc. 150,710  726 
  * TechTeam Global, Inc. 75,579  695 
  * Loral Space and Communications Ltd. 25,545  679 
  * Sykes Enterprises, Inc. 42,970  678 
    QAD Inc. 76,338  677 
  * PC-Tel, Inc. 107,804  676 
  * Websense, Inc. 32,800  672 
  * Internet Gold-Golden Lines Ltd. 61,386  612 
  * OmniVision Technologies, Inc. 42,854  607 
    MoneyGram International, Inc. 105,300  562 
  * Digi International, Inc. 44,374  520 
  * SRS Labs, Inc. 96,101  516 
  * Perficient, Inc. 36,800  511 
  * TTM Technologies, Inc. 50,100  510 
  * Digimarc Corp. 59,480  491 
  * Super Micro Computer Inc. 50,698  483 
  * Advanced Energy Industries, Inc. 44,128  477 
  * Sumtotal Systems Inc. 108,701  470 
  * Perceptron, Inc. 52,498  466 
  * OSI Systems Inc. 19,880  464 
  * Power Integrations, Inc. 17,700  451 
  * Dice Holdings Inc. 70,100  447 
  * ScanSource, Inc. 13,500  427 
  * Kulicke & Soffa Industries, Inc. 73,100  394 
  * Coherent, Inc. 14,834  386 
  * Techwell, Inc. 36,000  375 
  * CPI International, Inc. 28,782  372 
    TNS Inc. 20,780  367 
  * hi/fn, Inc. 62,996  355 
  * Gerber Scientific, Inc. 39,400  347 
  * IntriCon Corp. 31,256  344 
  * Multi-Fineline Electronix, Inc. 25,100  331 
  * Iomega Corp. 118,524  325 
    Renaissance Learning, Inc. 23,300  321 
    Technitrol, Inc. 14,110  320 
  ^ Imergent, Inc. 26,850  280 
  * Travelzoo, Inc. 17,400  276 
  * Convergys Corp. 15,643  243 
  * Rimage Corp. 10,300  240 
  * IXYS Corp. 31,714  238 
  * Rogers Corp. 7,500  234 
  * Immersion Corp. 19,997  196 
  * Cabot Microelectronics Corp. 4,600  159 
  * Zones, Inc. 16,184  149 
  * Itron, Inc. 1,500  124 
  * Macrovision Corp. 7,100  119 
    National Instruments Corp. 4,400  118 
  * Datawatch Corp. 26,010  112 
  * Ness Technologies Inc. 11,458  105 
  * Aetrium, Inc. 22,092  104 
  * Perot Systems Corp. 8,130  99 
  * Mastec Inc. 11,680  98 
  * Asyst Technologies, Inc. 28,400  84 
  * ADDvantage Technologies Group, Inc. 14,950  77 
  * Pervasive Software Inc. 18,850  71 
  * Moldflow Corp. 5,400  71 
  * Versant Corp. 2,100  56 
  * Vicon Industries Inc. 6,430  54 
  * Inx Inc. 4,055  41 
    Keithley Instruments Inc. 3,500  37 
  * Dynamics Research Corp. 3,731  35 
  * Onvia.com, Inc. 4,020  32 
  * Schmitt Industries Inc. 4,100  23 
  * Csp Inc. 2,080  15 
  * Aviza Technology Inc. 10,425  14 
    Mesa Laboratories, Inc. 413 
  * Data I/O Corp. 1,210 
  * LeCroy Corp. 652 
  * Trio-Tech International 600 
  * White Electronic Designs Corp. 930 
  * Sutron Corp. 200 
  * BSQUARE Corp. 13 

         2,075,655 

    Materials (5.4%)
    AptarGroup Inc. 1,637,600  61,770 
  * Owens-Illinois, Inc. 927,600  46,751 
  * Terra Industries, Inc. 916,468  41,305 
  * AK Steel Holding Corp. 859,835  41,083 
    Albemarle Corp. 976,870  35,421 
    CF Industries Holdings, Inc. 256,200  27,395 
    Hercules, Inc. 1,261,250  22,110 
    FMC Corp. 403,649  21,458 
    Sealed Air Corp. 789,800  20,653 
  ^ Martin Marietta Materials, Inc. 164,400  20,175 
  * LSB Industries, Inc. 682,840  18,826 
    Steel Dynamics, Inc. 268,520  14,003 
    Minerals Technologies, Inc. 248,200  13,502 
    Ferro Corp. 760,000  13,437 
    Celanese Corp. Series A 328,800  12,225 
    Greif Inc. Class A 167,364  11,013 
  * Rhodia SA 370,660  10,348 
  * RTI International Metals, Inc. 179,800  9,934 
    Ball Corp. 215,800  9,903 
    Cleveland-Cliffs Inc. 92,998  9,471 
  * Pactiv Corp. 322,800  9,235 
    Sigma-Aldrich Corp. 172,800  8,581 
    Cytec Industries, Inc. 123,900  7,014 
    International Flavors & Fragrances, Inc. 162,700  6,933 
    Lubrizol Corp. 123,100  6,476 
    Sensient Technologies Corp. 210,700  5,596 
    Kaiser Aluminum Corp. 85,200  5,449 
  * Rockwood Holdings, Inc. 173,477  5,093 
    Packaging Corp. of America 207,009  5,018 
  * W.R. Grace & Co. 204,600  4,628 
  * Horsehead Holding Corp. 234,100  3,509 
    Mitsubishi Rayon Co., Ltd. 786,000  3,169 
  * Universal Stainless & Alloy Products, Inc. 115,500  2,857 
    Silgan Holdings, Inc. 57,000  2,700 
  * Domtar Corp. 287,700  2,322 
    Schnitzer Steel Industries, Inc. Class A 40,036  2,268 
    Scotts Miracle-Gro Co. 58,007  2,265 
    RPM International, Inc. 102,700  2,222 
  * Buckeye Technology, Inc. 167,801  2,207 
    Airgas, Inc. 37,100  1,722 
    Nalco Holding Co. 80,800  1,692 
  * Apex Silver Mines Ltd. 87,900  1,253 
    Penford Corp. 49,641  1,110 
    A.M. Castle & Co. 49,840  1,056 
  * Headwaters Inc. 85,000  958 
    Arch Chemicals, Inc. 27,730  934 
  * Crown Holdings, Inc. 32,900  807 
    Reliance Steel & Aluminum Co. 14,917  734 
  * GenTek, Inc. 20,900  580 
 *^ Flotek Industries, Inc. 21,600  440 
    Myers Industries, Inc. 35,300  415 
    Innospec, Inc. 16,177  255 
    Schweitzer-Mauduit International, Inc. 5,900  141 
    Metal Management, Inc. 2,600  129 
    Rock-Tenn Co. 3,854  110 
    Stepan Co. 3,330  100 
  * American Pacific Corp. 6,060  90 
    NN, Inc. 8,837  75 
  * Rock of Ages Corp. 11,950  62 
    U.S. Energy Corp. 11,410  46 
  * Esmark, Inc. 1,100  11 
    Wausau Paper Corp. 80 

         561,046 

    Telecommunication Services (1.1%)
    Partner Communications Company Ltd. 1,024,500  21,258 
 *^ Clearwire Corp. 1,349,140  18,537 
    CenturyTel, Inc. 364,634  13,459 
  * SBA Communications Corp. 445,070  13,179 
  * American Tower Corp. Class A 342,005  12,835 
    NTELOS Holdings Corp. 526,500  11,203 
  * Golden Telecom, Inc. 62,200  6,389 
    Telephone & Data Systems, Inc. 118,473  6,248 
  * General Communication, Inc. 612,500  4,416 
  * Syniverse Holdings Inc. 274,500  4,334 
  * Gilat Satellite Network Ltd. 221,735  2,415 
    Atlantic Tele-Network, Inc. 54,100  1,704 
  * Premiere Global Services, Inc. 84,210  1,027 
  * Rural Cellular Corp. Class A 6,500  287 
  * Centennial Communications Corp. Class A 14,800  85 
    USA Mobility, Inc. 1,750  21 
  * Hungarian Telephone and Cable Corp. 970  17 

         117,414 

    Utilities (0.8%)
    CenterPoint Energy Inc. 1,327,434  21,252 
    UGI Corp. Holding Co. 595,100  15,842 
    Energen Corp. 168,480  10,597 
    Ormat Technologies Inc. 197,000  8,564 
    CMS Energy Corp. 453,975  7,114 
  * El Paso Electric Co. 295,600  6,926 
    DPL Inc. 197,500  5,483 
    Equitable Resources, Inc. 54,800  3,055 
  * Reliant Energy, Inc. 109,900  2,338 
    WGL Holdings Inc. 56,200  1,812 
    Westar Energy, Inc. 39,200  955 
    ALLETE, Inc. 9,770  376 
    ITC Holdings Corp. 6,500  343 
  * Maine & Maritimes Corp. 10,730  340 
    SJW Corp. 4,500  136 
    Central Vermont Public Service Corp. 4,390  128 

         85,261 

    Exchange-Traded Funds (1.2%)
^ 3 Vanguard Small-Cap ETF 1,165,083  74,192 
  3 Vanguard Small-Cap Growth ETF 713,200  46,237 

         120,429 


    Total Common Stocks
    (Cost $9,488,504)    9,817,550 

    Temporary Cash Investments (8.3%)

    Money Market Fund (7.6%)
  4 Vanguard Market Liquidity Fund, 4.060% 799,188,640  799,189 
 
Face
 
  Amount  
  ($000)  

    Repurchase Agreement (0.6%)
    J.P. Morgan Securities Inc.
    2.990%, 2/1/08
    Dated 1/31/08, Repurchase Value $60,305,000, collateralized by
    Federal National Mortgage Assn. 6.000%, 3/1/36-5/1/37 60,300  60,300 
    U.S. Agency Obligations (0.1%)
  5 Federal Home Loan Bank
  6 4.563%, 2/8/08 15,000  14,992 
  5 Federal Home Loan Mortgage Corp.
  6 3.607%, 4/7/08 1,500  1,493 

         16,485 


    Total Temporary Cash Investments
    (Cost $875,966)    875,974 

    Total Investments (102.2%)
    (Cost $10,364,470)    10,693,524 

 
Written
 
  Contracts  

    Liability For Covered Call Options Written (0.0%)
    SunTech Power Holdings Co., Ltd. ADR, Expires 3/22/08, Strike Price $75
    (premium received $68) (500) (78)

    Other Assets and Liabilities - Net (-2.2%)    (233,947)

    Net Assets (100%)    10,459,499 

 *Non-income-producing security.
 ^ Part of security position is on loan to broker-dealers.
 1 Considered an affiliated company of the fund as the fund owns more than 5% of the outstanding voting securities of such company.
 2 Securities with a value of $2,737,000 have been segregated as collateral in connection with covered call options written 3 Considered an affiliated company of the fund as the issuer is another member of The Vanguard Group.
 4 Affiliated money market fund available only to Vanguard funds and certain trusts and accounts managed by Vanguard. Rate shown is the 7-day yield.
 5 The issuer operates under a congressional charter; its securities are neither issued nor guaranteed by the U.S. government. If needed, access to additional funding from the U.S. Treasury (beyond the issuer’s line of credit) would require congressional action.
 6 Securities with a value of $16,485,000 have been segregated as initial margin for open futures contracts.
 ADR — American Depositary Receipt.
 REIT — Real Estate Investment Trust.

Investment Securities: Securities are valued as of the close of trading on the New York Stock Exchange (generally 4 p.m., Eastern time) on the valuation date. Equity securities are valued at the latest quoted sales prices or official closing prices taken from the primary market in which each security trades; such securities not traded on the valuation date are valued at the mean of the latest quoted bid and asked prices. Securities for which market quotations are not readily available, or whose values have been affected by events occurring before the fund’s pricing time but after the close of the securities’ primary markets, are valued at their fair values calculated according to procedures adopted by the board of trustees. These procedures include obtaining quotations from an independent pricing service, monitoring news to identify significant market- or security-specific events, and evaluating changes in the values of foreign market proxies (for example, ADRs, futures contracts, or exchange-traded funds), between the time the foreign markets close and the fund’s pricing time. When fair-value pricing is employed, the prices of securities used by a fund to calculate its net asset value may differ from quoted or published prices for the same securities. Investments in Vanguard Market Liquidity Fund are valued at that fund’s net asset value. Temporary cash investments acquired over 60 days to maturity are valued using the latest bid prices or using valuations based on a matrix system (which considers such factors as security prices, yields, maturities, and ratings), both as furnished by independent pricing services. Other temporary cash investments are valued at amortized cost, which approximates market value.

At January 31, 2008, the cost of investment securities for tax purposes was $10,372,116,000. Net unrealized appreciation of investment securities for tax purposes was $321,408,000, consisting of unrealized gains of $1,354,847,000 on securities that had risen in value since their purchase and $1,033,439,000 in unrealized losses on securities that had fallen in value since their purchase.


Foreign Currency: Securities and other assets and liabilities denominated in foreign currencies are translated into U.S. dollars using exchange rates obtained from an independent third party as of the fund’s pricing time on the valuation date. Realized gains(losses) and unrealized appreciation (depreciation) on investment securities include the effects of changes in exchange rates since the securities were purchased, combined with the effects of changes in security prices. Fluctuations in the value of other assets and liabilities resulting from changes in exchange rates are recorded as unrealized foreign currency gains (losses) until the assets or liabilities are settled in cash, at which time they are recorded as realized foreign currency gains (losses).

Futures Contracts: The fund invests a portion of its cash reserves in equity markets through the use of index futures contracts. After giving effect to futures investments, the fund’s effective common stock and temporary cash investment positions represent 96.7% and 5.5%, respectively, of net assets. Futures contracts are valued at their quoted daily settlement prices.

At January 31, 2008, the aggregate settlement value of open futures contracts expiring in March 2008 and the related unrealized appreciation (depreciation) were:


($000)
Futures Contracts Number
of Long
Contracts
Aggregate
Settlement
Value
Unrealized
Appreciation
(Depreciation)

E-mini Russell 2000 Index 2,257  161,376  (1,467)
E-mini NASDAQ 100 Index 1,355  50,074  (4,476)
E-mini S&P MidCap 400 Index 368  29,676  1,143 
Russell 2000 Index 149  53,268  (3,049)

Covered Call Options Written: The fund may write covered call options. When the fund writes covered call options, the premium received by the fund subsequently is recorded as a liability, and is marked-to-market to reflect the current market . value of the option written. Covered call options written are valued at their quoted daily settlement prices. Options not traded on the valuation date are valued at the latest quoted ask price.

Affiliated Companies: Certain of the fund’s investments are in companies that are considered to be affiliated companies of the fund because the fund owns more than 5% of the outstanding voting securities of the company. Transactions during the period in securities of these companies were as follows:


Current Period Transactions
October 31, 2007
Market
Value
($000)
Purchases
at Cost
($000)
Proceeds from
Securities
Sold
($000)
Dividend
Income
($000)
January 31, 2008
Market
Value
($000)

Advanta Corp. Class A 7,825  - 8,920 
The Advisory Board Co. 60,415  4,789  - 64,742 



   60,415        - 73,662 




Item 2: Controls and Procedures.

(a) Disclosure Controls and Procedures. The Principal Executive and Financial Officers concluded that the Registrant’s Disclosure Controls and Procedures are effective based on their evaluation of the Disclosure Controls and Procedures as of a date within 90 days of the filing date of this report.

(b) Internal Control Over Financial Reporting. During the last fiscal quarter, there was no significant change in the Registrant’s internal control over financial reporting that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting.

Item 3:

Exhibits.
(a) Certifications.

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.

VANGUARD EXPLORER FUND

BY: (signature)
(HEIDI STAM)
JOHN J. BRENNAN*
CHIEF EXECUTIVE OFFICER

Date: March 17, 2008

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.

VANGUARD EXPLORER FUND

BY: (signature)
(HEIDI STAM)
JOHN J. BRENNAN*
CHIEF EXECUTIVE OFFICER

Date: March 17, 2008

VANGUARD EXPLORER FUND

BY: (signature)
(HEIDI STAM)
THOMAS J. HIGGINS*
TREASURER

Date: March 17, 2008

*By Power of Attorney, Filed on January 18, 2008, See File Number 2-29601. Incorporated by Reference.