William Blair Investment Management, LLC

Most recent update: Dec. 31, 2017

CompanyShares/WarrantsValue ($000)
Alibaba Group Holding Limited5,316,185916,642
Taiwan Semiconductor Manufacturing Company Limited17,377,384688,990
S&P Quality Rankings Glbl Equ Mngd Tr2,159,920576,396
Copart9,338,223403,318
Canadian National Railway Company4,599,778380,131
BWX Technologies5,727,978346,485
Suncor Energy Inc.9,397,122345,839
CoStar Group1,140,031338,532
Six Flags Entertainment Corporation New4,515,844300,620
Russell Exchange Traded Funds Trust Russell Small Cap Consiste2,417,450300,586
Alphabet Holding Company, Inc.284,775299,571
Domino's Pizza Inc1,573,333297,297
The Cash Store Financial Services Inc.4,885,591286,853
Credicorp Ltd.1,270,207263,479
Booz Allen Hamilton Holding Corporation6,774,293258,304
Amazon.com220,488257,854
Affiliated Managers Group1,231,465252,758
Ballroom Dance Fitness Inc6,619,404250,544
The Middleby Corporation1,838,775248,143
Guidewire Software3,155,680234,341
Microsoft Corporation2,710,505231,857
Zoetis3,214,832231,596
Yum China Holdings, Inc.5,611,509224,573
Maximus3,129,917224,039
Progressive Corporation (The)3,867,009217,790
Vail Resorts1,006,791213,913
United States Cellular Corporation939,740207,175
Hawaiian Telcom Holdco, Inc.2,008,239204,158
HealthSonix, Inc.4,006,064197,940
Redux Holdings, Inc.1,611,879193,587
Verisk Analytics1,986,562190,710
Facebook1,067,826188,429
Mastercard Incorporated1,231,168186,350
ABIOMED962,867180,451
Grand Canyon Education1,997,216178,811
Live Nation Entertainment4,138,611176,181
Adtalem Global Education4,101,805172,481
Ligand Pharmaceuticals Incorporated1,240,071169,803
Martin Marietta Materials753,144166,475
Rogers Corporation1,007,996163,215
Takeuchi Manufacturing Co., Ltd.1,473,896161,804
Union Pacific Corporation1,194,581160,193
Veeva Systems2,866,328158,451
Charles River Laboratories International1,406,744153,968
NetEase445,465153,711
Tesco PLC2,031,616151,863
Check Point Software Technologies Ltd.1,452,148150,472
Bank of the Ozarks3,097,339150,066
China Lodging Group1,026,949148,322
CSRA Inc.4,919,028147,177
Jumbo SA1,924,413144,389
Brookfield Real Estate Services3,245,332141,302
Michaels Stores Inc5,705,741138,022
Streamtrack, Inc.843,696137,826
Arista Networks, Inc.582,707137,274
Celanese Corporation1,255,537134,443
Yelp Inc.3,167,281132,899
East West Bancorp2,147,045130,605
Hilton Grand Vacations3,105,485130,275
Yandex N.V.3,946,999129,264
Adobe Systems Incorporated737,577129,253
Horizon Pharma8,826,079128,861
Heico Corporation1,623,083128,305
MaxLinear4,802,122126,872
West Pharmaceutical Services1,272,407125,548
2U, Inc.1,919,286123,813
Axalta Coating Systems Ltd.3,805,192123,136
IntercontinentalExchange1,744,895123,120
Teledyne Technologies Incorporated669,495121,279
Rogers Communications, Inc.2,358,000120,440
Coherent423,300119,464
Estee Lauder Companies928,375118,126
CBOE Holdings945,317117,777
Hexcel Corporation1,901,603117,614
Jones Lang LaSalle Incorporated770,056114,684
IDEXX Laboratories728,725113,958
Cambrex Corporation2,353,032112,946
Starbucks Corporation1,874,617107,659
Diamondback Energy851,819107,542
Home Depot559,786106,096
Fortive Corp1,439,997104,184
Ross Stores1,284,083103,048
Dex One Corporation1,762,619101,157
Encore Capital Group Inc2,398,567100,980
Euronet Worldwide1,198,180100,971
SiteOne Landscape Supply, Inc.1,314,035100,786
Raytheon Company529,48299,463
Socket Mobile, Inc.1,666,11598,916
Texas Instruments Incorporated931,04397,238
STERLING CONSOLIDATED Corp1,525,95596,578
Equifax816,89896,329
Tallgrass Energy Partners, LP3,198,48495,026
National Instruments Corporation2,272,37494,599
FirstService1,295,11490,554
Companhia de Bebidas das Americas - AmBev13,418,32386,681
EXACT Sciences Corporation1,581,47383,091
The Ultimate Software Group378,49282,598
Accenture plc.537,16982,235
Universal Electronics Inc.1,720,16881,278
Concho Resources Inc.540,09281,133
Dun & Bradstreet Corporation (The)679,30980,437
Align Technology356,25279,156
Russell Exchange Traded Funds Trust Russell Small Cap Aggressi579,63078,065
iBrands Corp.1,926,35077,921
Danaher Corporation818,45175,969
Indianapolis Power & Light Co.2,082,90075,130
NewLead Holdings Ltd.793,51474,590
NICE-Systems Limited800,40673,564
BlackRock142,14173,019
Ctrip.com International1,633,07172,017
Weibo689,36171,321
Centenera Mng Corp.697,36270,350
Virtu Financial3,705,65367,813
J P Morgan Chase & Co628,56267,218
Boeing Company (The)226,46766,787
Illini Corp.548,80066,712
Vulcan Materials Company517,33166,410
Repligen Corporation1,802,56965,397
Westinghouse Air Brake Technologies Corporation785,85863,992
Colliers International Group1,039,27462,720
Netflix322,32161,873
Toro Company (The)943,86661,568
ICON plc544,75661,094
Nu Skin Enterprises879,73960,025
OM Asset Management plc3,558,74559,609
Cable One, Inc.82,16657,791
Envestnet535,46557,782
Xylem Inc.846,33057,720
ENERGY TRANSFER PARTNERS783,90056,645
Grupo Financiero Galicia S.A.856,31056,388
Americas Silver Corporation1,184,06056,184
Teleflex Incorporated213,65953,163
Fifth Third Bancorp1,747,17953,009
Carmax Mining Corp.826,05852,975
Banco Popular1,686,29152,730
BioMarin Pharmaceutical Inc.577,67651,511
Ishares Income Trust Sector Index Fd1,549,70951,216
GLAUKOS Corp1,979,96050,786
Banco Macro S.A.422,95649,012
Financial Institutions1,753,70048,946
Grupo De Inversiones Suramericana S.A.1,643,38248,183
Thermo Fisher Scientific Inc252,72347,987
Acxiom Corporation1,697,34446,779
Biogen Idec Inc.146,62546,710
Goldman Sachs Group183,07346,640
Hanesbrands Inc.2,204,87846,104
Selective Insurance Group874,90046,090
Intuit Inc.291,41345,979
BROADVIEW INSTITUTE INC178,57945,877
Newell Rubbermaid Inc.1,475,74445,600
Microchip Technology Incorporated515,42545,296
Analog Devices503,23344,803
PPG Industries378,61144,229
Southwest Airlines Company666,70843,636
Shoprite Holdings Ltd.411,63041,575
Ulta Salon180,44140,357
Glacier Bancorp1,015,50140,001
Global Profit Technologies, Inc.3,722,90038,271
Pampa Energia S.A.552,80337,192
Interface Inc.1,462,76836,789
Home BancShares1,564,93636,385
Copa Holdings267,25535,828
Carrizo Oil & Gas1,679,33535,736
Carnival Plc ADS537,92935,702
Grupo Aeroportuario del Sureste195,10635,608
Neenah Paper227,28935,500
Selective Insurance Group592,39934,774
Praxair223,67334,598
Transdigm Group Incorporated125,45534,452
Canadian Natural Resources Limited958,01434,304
Radiant Creations Group, Inc.1,662,64234,267
Brady Corporation894,11433,887
IDACORP361,81433,055
Orbotech Ltd.647,51732,531
Stryker Corporation209,38532,421
Southwest Gas Corporation393,03831,632
Aptiv PLC367,65531,188
Sina Corporation310,04631,101
ONE Gas422,67730,965
Wolverine World Wide960,86730,632
Lamprell165,70230,501
Sterling Bancorp1,229,93430,256
ISHARES V PLC503,90030,199
Dana Holding Corporation937,38230,006
The Hanover Insurance Group276,44029,878
SPDR GOLD TRUST807,10029,637
Hancock Holding Company591,48429,278
Salesforce.com Inc285,55429,192
Telecom Argentina Stet - France Telecom S.A.786,39528,806
Terra Nitrogen Company589,50928,426
Continental Building Products1,008,10828,378
Mettler-Toledo International45,42228,140
Inphi Corporation766,79228,065
Dave & Buster's Entertainment504,00927,806
Watsco162,79227,681
FNB United Corp.1,978,59127,344
WSFS Financial Corporation565,38627,054
J & J Snack Foods Corp.177,78926,994
Western Alliance Bancorporation473,28926,798
The Intertain Group Limited183,48026,669
Magna International467,91226,569
First American Minnesota Municipal Income Fund II470,19326,350
CoBiz Financial Inc.1,313,67426,260
Chesapeake Utilities Corporation332,21826,096
Belden Inc335,31425,876
Silicon Motion Technology Corporation482,60725,558
Education Realty Trust Inc.726,59425,373
Boston Scientific Corporation1,017,82325,232
iShares S&P Global Nuclear Index Fund701,30024,931
Healthcare Realty Trust Incorporated774,06424,863
American Assets Trust643,08824,592
Terreno Realty Corporation694,80124,360
CNO Financial Group968,05323,901
Acadia Realty Trust871,58723,847
Umpqua Holdings Corporation1,124,18823,383
Roper Technologies88,74322,984
Magellan Health Services237,84022,963
Integer Holdings Corporation503,65922,816
Agree Realty Corporation440,96122,683
TopBuild Corp298,94822,642
Renasant Corporation542,33622,176
Equity Commonwealth726,78422,174
IBERIABANK Corporation285,85222,154
EMCOR Group267,90421,901
CONMED Corporation427,00821,765
Steven Madden464,59321,696
Range Energy Resources, Inc.1,269,50621,658
Meredith Corporation318,26721,022
HudBay Minerals Inc2,340,11220,770
RSP Permian507,12220,630
Darling International Inc.1,137,69520,626
Boston Private Financial Holdings1,331,72120,575
Pebblebrook Hotel Trust550,04520,445
Standex International Corporation199,74320,344
Banner Corporation369,03720,341
Cavco Industries133,25320,334
Seacoast Banking Corporation of Florida784,71819,783
ADTRAN1,018,56519,709
PolyOne Corporation452,56719,687
Universal Forest Products510,00619,186
Minerals Technologies Inc.273,90618,858
Sensient Technologies Corporation257,08318,806
PDC Energy361,79318,647
Kadant Inc185,19718,594
Highwoods Properties358,93818,274
Sandy Spring Bancorp466,22118,192
Carpenter Technology Corporation355,94218,149
Prologis, Inc.275,08217,746
Costco Wholesale Corporation95,10917,702
OceanFirst Financial Corp.669,64717,578
MakeMyTrip Limited579,27217,291
Archrock1,641,06917,231
Enerplus Corporation1,740,85317,082
Green Bancorp, Inc.814,03716,525
Pioneer Exploration, Inc.95,24316,463
Epigenomics Ag Berli589,22516,404
Lydall322,19416,351
CVB Financial Corporation693,98016,350
National Bank of Canada 502,69816,302
Transportadora De Gas Sa Ord B713,82515,868
Silgan Holdings538,93615,839
Spartan Stores592,20515,800
Fastenal Company277,56315,180
Cincinnati Bell Inc726,54415,148
Meta Financial Group158,76514,710
Baozun452,38414,277
LaSalle Hotel Properties496,54113,938
Blue Bird Corporation685,35413,639
LAUREATE EDUCATION, INC.1,004,74713,624
Northwest Pipe Company711,67713,621
Varonis274,68313,336
Armstrong Flooring, Inc.219,19513,272
Douglas Dynamics345,86713,074
Analogic Corporation154,32412,925
Newpark Resources1,482,00612,745
Halcon Resources Corporation1,656,87812,543
REAL HIP-HOP NETWORK, INC279,55012,384
Exterran Corp389,46212,245
Codexis1,418,06311,841
Primo Water Corporation917,72711,536
LHC Group187,92711,511
NVR3,27011,472
Noah Holdings Ltd.244,68011,324
BHP Billiton Limited246,22011,324
Golden Valley Bank (Chico, CA)344,48911,248
ESCO Technologies Inc.186,23511,221
BofI Holding364,80110,908
MGP Ingredients137,37210,561
Lithia Motors91,13310,352
Supernus Pharmaceuticals254,69710,150
Boot Barn Holdings, Inc.603,25510,020
Helix TCS, Inc.1,275,8119,620
Cars.com Inc.331,1529,550
Bristol-Myers Squibb Company147,8199,058
Global X Funds Global X NASDAQ 500 ETF254,2008,976
Arcos Dorados Holdings Inc.859,5798,897
Allergan53,3418,726
Mercury Computer Systems168,4428,649
Gentherm Inc272,0018,636
ICICI Bank Limited863,1038,396
Imax Corporation359,8158,330
Vedanta Res Plc390,4188,131
Atlantic Alliance Partnership Corp.266,1968,090
Littelfuse40,8408,079
Calavo Growers93,5217,893
ORBCOMM Inc.751,1167,646
USA Technologies780,4617,609
WNS (Holdings) Limited188,4177,561
iShares Trust iShares MSCI All Country Asia ex Japan Small Cap142,7677,505
NutriSystem Inc138,7407,298
Deoleo SA49,3627,208
USLIFE Income Fund99,7257,200
CryoLife365,3466,996
Orix Corp Ads80,3406,811
Relx286,6456,793
Prudential Public Limited Company133,3936,774
ABB Ltd252,1516,763
John Bean Technologies Corporation60,5066,704
Neogenomics Inc.755,2546,692
Albany International Corporation106,7576,560
EPAM Systems60,5146,501
Novo Nordisk A/S120,6666,476
Etsy313,4186,409
Collectors Universe223,5196,402
ICF International118,4606,219
FMC Corporation61,5325,825
YPF Sociedad Anonima247,0735,660
Fresenius Medical Care Corporation105,3965,539
Novartis AG65,2495,478
Team365,4065,445
Royal Dutch Shell PLC81,5695,441
Lennox International25,8485,383
Banco de Guayaquil SA400,6595,207
51job83,7285,095
Astrazeneca PLC146,7345,092
AxoGen, Inc.179,5505,081
Royal Kpn N.V.61,2234,999
Callon Petroleum Company400,8494,870
Agilysys388,5184,771
U.S. Auto Parts Network1,877,1064,730
Simulations Plus291,4854,693
Grifols200,3354,592
National Retail Properties103,3014,455
Arthur J. Gallagher & Co.68,0414,306
Unilever NV74,6074,202
Tata Motors Ltd126,0364,168
Albero Corp.31,7094,055
Willdan Group166,9363,996
Bridgepoint Education462,5743,839
American Campus Communities Inc91,8583,769
Columbia Banking System85,9923,735
Sappi Limited32,6913,673
Caterpillar23,2583,665
Sumitomo Mitsui Financial Group Inc417,8783,631
Anheuser-Busch Inbev SA31,2183,483
Cognex Corporation56,8703,478
Douglas Emmett83,8223,442
IRSA Inversiones Y Representaciones S.A.108,7503,219
Apple Green Holding, Inc.160,7343,152
Thomson Reuters Corp70,5943,077
Rio Tinto56,4032,985
Gulfport Energy Corporation208,3422,658
A-Mark Precious Metals, Inc.177,4052,599
Vanguard Scottsdale Funds Vanguard Russell 1000 ETF20,8762,553
Petrobras Argentina S.A.258,1282,535
MercadoLibre8,0502,533
Tanger Factory Outlet Centers86,2162,286
Signature Bank16,2592,232
Energen Corporation37,8142,177
OBALON THERAPEUTICS INC297,6071,967
Intuitive Surgical4,9271,798
YogaWorks, Inc.618,1381,749
ONYX Pharmaceuticals6,9671,676
Adecoagro S.A.146,5201,515
E*TRADE Financial Corporation29,3201,453
Empresa Distribuidora Y Comercializadora Norte S.A. (Edenor)29,1521,449
Wheaton Precious Metals62,8841,392
Old Dominion Freight Line10,5221,384
Owens Corning Inc14,6941,351
lululemon athletica inc.17,1551,348
Globant28,9901,347
iShares Trust6,9501,298
Pinnacle West Capital Corporation15,0281,280
Thor Industries8,4321,271
Dunkin' Brands Group19,3971,251
Spirit Aerosystems Holdings14,0531,226
Atmos Energy Corporation13,9951,202
F5 Networks8,8491,161
Orion Engineered Carbons45,0981,155
Community Svgs Bancorp Inc44,8741,152
BBVA Banco Frances S.A.45,1021,137
Fortune Brands Home & Security16,4621,127
PacWest Bancorp21,7151,094
SVB Financial Group4,5311,059
LivePerson90,9111,045
Lamb Weston Holdings, Inc.17,9321,012
ManpowerGroup7,806984
Steel Partners Holdings LP22,750981
Cresud S.A.C.I.F. y A.44,070974
Camden Property Trust10,538970
CornerWorld Corp.6,893964
Parsley Energy31,651932
Performance Sports Group12,504914
American Financial Group8,113881
Cadence Design Systems19,663822
Patterson-UTI Energy35,379814
Ultrapar Participacoes S.A.35,696811
Hologic17,968768
Mednax12,749681
Targa Resources13,416650
Zions Bancorporation11,091564
Russell Exchange Traded Funds Trust Russell Small Cap Low P/E 2,940355
Select Asset Inc.3,957327
USD Partners LP1,930224
iShares Trust iShares MSCI All Country Asia Information Techno1,626114
Eldorado Artesian Springs, Inc.2,20085

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