WESTFIELD CAPITAL MANAGEMENT CO LP

Most recent update: Sept. 30, 2017

CompanyShares/WarrantsValue ($000)
Alphabet Holding Company, Inc.376,390363,664
Apple Inc.2,114,798325,933
Facebook1,628,311278,230
Amazon.com228,702219,863
Microsoft Corporation2,882,782214,738
Jazz Pharmaceuticals plc1,438,481210,378
Celgene Corporation1,362,424198,669
Visa Inc.1,832,202192,821
American Housing Income Trust, Inc.2,843,212187,766
Marriott International1,681,372185,388
Constellation Brands Inc857,830171,094
New Ulm Telecom, Inc.1,840,853162,731
Home Depot966,191158,030
Cooper Companies636,882151,011
United States Cellular Corporation708,357138,732
Salesforce.com Inc1,482,626138,507
DowDuPont Inc.1,995,120138,122
Ingersoll-Rand plc (Ireland)1,520,393135,573
ServiceNow1,085,501127,579
Abbott Laboratories2,326,895124,163
Philip Morris International Inc1,116,017123,889
Eli Lilly and Company1,406,513120,313
Progressive Corporation (The)2,351,156113,843
Celanese Corporation1,048,124109,288
Adobe Systems Incorporated729,727108,861
Summit Materials3,344,408107,121
United Continental Holdings1,738,886105,863
Alexandria Real Estate Equities888,435105,697
Charter Communications290,027105,402
Mettler-Toledo International165,344103,532
Union Pacific Corporation880,836102,151
Danaher Corporation1,188,193101,923
Delphi Automotive plc1,020,057100,374
Newell Rubbermaid Inc.2,336,39799,694
PayPal Holdings, Inc.1,545,91198,985
ICON plc869,01898,964
priceline.com Incorporated51,23993,809
IntercontinentalExchange1,362,75393,621
J.B. Hunt Transport Services841,45093,468
The Medicines Company2,476,77891,740
Mastercard Incorporated647,67891,452
Vail Resorts398,79490,973
Lions Gate Entertainment2,822,99889,743
Avery Dennison Corporation911,59189,646
Bank of America Corporation3,502,65488,757
Lennox International495,12288,612
Nektar Therapeutics3,632,41987,178
Applied Materials1,659,40386,438
Arthur J. Gallagher & Co.1,349,36883,054
Pinnacle Foods Inc1,438,36882,231
BROADVIEW INSTITUTE INC338,21282,030
Stargaze Entertainment Group Inc.519,99181,280
Biogen Idec Inc.257,69280,689
Transdigm Group Incorporated314,47380,395
CoStar Group296,27279,475
Microsemi Corporation1,538,84079,219
Andeavor757,63378,150
CME Group Inc.565,47276,723
CyrusOne1,227,32872,326
Micron Technology1,828,93571,932
Cognizant Technology Solutions Corporation988,65271,717
Redux Holdings, Inc.638,38270,771
Ryder System830,60370,227
Verizon Communications Inc.1,380,85268,338
First Century Fox Inc Class A2,584,31368,174
Boeing Company (The)267,82868,085
Wright Medical Group2,619,91467,777
Envestnet671,64264,975
Berry Petroleum Company1,140,65864,618
Hill-Rom Holdings Inc867,92464,226
Alliance Creative Group, Inc.288,14163,838
Alexion Pharmaceuticals453,16763,575
SBA Communications Corporation440,13963,402
Raymond James Financial749,29463,188
STERLING CONSOLIDATED Corp1,117,20961,726
IHS Markit1,388,27261,195
InterXion Holding N.V.1,174,31659,808
Installed Building Products921,91559,740
Western Alliance Bancorporation1,114,17759,141
NICE-Systems Limited720,35758,572
KLX Inc.1,092,96057,850
MSCI Inc494,63557,823
ACCELERON PHARMA INC1,541,63857,534
CIENA Corporation2,594,28556,996
Envision Healthcare Holdings, Inc.1,259,30056,606
Vantiv782,09155,114
MICRO IMAGING TECHNOLOGY, INC.761,92854,996
Lamprell294,41954,479
Total Energy Services Inc.830,43054,393
Fortinet1,502,82353,861
Cypress Semiconductor Corporation3,529,24953,009
John Bean Technologies Corporation516,39852,208
Dunkin' Brands Group977,87951,906
MGIC Investment Corporation4,099,55251,367
Valero Energy Corporation636,66348,978
Essent Group1,206,81048,876
Six Flags Entertainment Corporation New795,69548,490
Pacira Pharmaceuticals1,285,85048,284
Splunk Inc.724,28948,115
Builders FirstSource2,650,80947,688
Fidelity National Information Services494,40046,172
Equinix103,13146,027
Gartner360,07044,796
Orbotech Ltd.1,044,28644,079
Bank of the Carolinas CORP1,199,02043,932
Eldorado Resorts, Inc.1,689,24943,329
Bioverativ Inc.757,20943,214
Axalta Coating Systems Ltd.1,482,42042,872
Integrated Research Ltd.840,55642,431
Nexstar Broadcasting Group673,22841,942
Flow International Corporation978,27441,665
Palo Alto Networks285,69141,168
Omnicell798,21240,749
Prothena Corp plc623,48940,383
Sun Communities467,87940,088
AveXis, Inc.409,00039,563
Quest Management Inc.413,65138,734
Autodesk337,40937,878
Clovis Oncology459,47037,860
ON Semiconductor Corporation2,042,76937,730
W.T.B. Financial Corp.521,49537,626
Dana Holding Corporation1,336,87137,379
Crane Company464,49537,155
REAL HIP-HOP NETWORK, INC924,22836,877
Smith (A.O.) Corporation618,46436,755
Pioneer Exploration, Inc.245,49536,220
Bright Horizons Family Solutions Inc419,73136,185
BMC Stock Holdings1,679,07635,848
Rush Enterprises771,37635,707
Proofpoint401,24534,997
Old Dominion Freight Line311,55234,305
MGM Growth Properties LLC1,043,90534,021
Vulcan Materials Company284,38134,012
East West Bancorp559,29033,434
Madison Ventures Inc.153,24832,810
Univar Inc.1,129,93432,689
FleetCor Technologies210,78932,624
NCR Corporation864,74332,445
Parametric Technology Corporation566,21631,867
Cavium477,29531,473
TopBuild Corp477,31531,107
FCB FINANCIAL HOLDINGS, INC.642,60031,038
American Campus Communities Inc700,71530,937
Dollar Tree351,72230,537
Milacron Holdings Corp.1,809,21530,503
WNS (Holdings) Limited815,56029,768
CommVault Systems485,02929,490
Liberty Broadband Corp309,70529,168
Sonic Corp.1,110,99528,275
Aclaris Therapeutics, Inc.1,091,94428,183
Tableau Software375,89128,150
Boyd Gaming Corporation1,078,44528,093
Diamondback Energy286,48528,064
Integrated Drilling Equipment Holdings Corp.1,053,79528,010
Monolithic Power Systems261,21227,832
The Middleby Corporation216,24627,716
H. B. Fuller Company476,70027,677
Teledyne Technologies Incorporated172,13027,400
DENTSPLY International Inc.448,85526,846
Zendesk, Inc.894,47526,038
Expedition Mining Inc180,23925,944
PVH Corp.205,22125,870
Maxima Group, Inc.535,65225,556
CyberArk Software614,19025,182
Zayo Group Holdings, Inc.716,92924,677
BioMarin Pharmaceutical Inc.263,92524,563
Dex One Corporation498,45024,387
Neurocrine Biosciences383,09723,476
NEW RELIC INC466,27623,221
RSP Permian665,20023,009
Sotheby's497,22022,927
Limited Brands546,77922,751
NEVRO CORP247,91022,530
Euronet Worldwide235,96422,367
Bio-Rad Laboratories99,78822,175
Inphi Corporation557,24022,117
SLM Corporation1,920,51022,028
Watsco135,74421,864
Coherent91,25121,459
Bottomline Technologies640,78220,396
Acushnet Holdings Corp.1,138,28520,216
QTS Realty Trust, Inc.385,94820,208
WageWorks330,56520,065
Camden Property Trust219,30020,055
BroadSoft397,15119,977
Microchip Technology Incorporated221,97519,929
Pacific Premier Bancorp Inc519,87019,625
Masimo Corporation225,97919,561
KapStone Paper and Packaging Corporation903,47519,416
AO Mosenergo181,34018,479
MasTec376,01517,447
The Ultimate Software Group86,60516,420
Community Healthcare Trust Inc583,88215,741
Mercury Computer Systems280,95514,576
MKS Instruments148,41814,018
Chegg853,03512,659
Matson446,25312,575
Cantel Medical Corp.120,83011,379
Lithia Motors93,81111,286
ORBCOMM Inc.1,065,08511,151
Cardiome Pharma Corporation4,858,45410,349
Lumentum188,20010,229
Resolute Energy Corp.307,5209,130
Stag Industrial315,7028,672
Texas Instruments Incorporated77,1206,913
Cisco Systems203,3206,838
Advanced Micro Devices507,6156,472
Occidental Petroleum Corporation97,5906,266
Intel Corporation157,4775,997
Black Earth Farming135,7605,844
Thermo Fisher Scientific Inc30,2115,716
Cummins Inc.32,4505,453
CVS Corporation65,8855,358
J P Morgan Chase & Co55,5055,301
Jack Henry & Associates51,1845,261
Motorola Solutions61,6105,229
Oracle Corporation102,6454,963
Kimberly-Clark Corporation40,0474,713
Lockheed Martin Corporation13,3884,154
Honeywell International Inc.28,4704,035
Live Nation Entertainment47,3502,062
Marten Transport98,5662,026
Waste Connections13,986978
Lions Gate Metals Inc.27,795930
Cabot Microelectronics Corporation10,723857
Crimson Wine Group Ltd.15,000814
Merck & Company12,159779
lululemon athletica inc.10,500654
Natural Grocers by Vitamin Cottage100,000558
PRA Health Sciences, Inc.6,900526
Landstar Development Group, Inc.4,600458
Zynga Inc.113,700430
Federal Express Corporation1,900429
State Street Corporation3,840367
West Pharmaceutical Services3,700356
NMI Holdings, Inc.27,700343
Schlumberger N.V.4,824337
LAS VEGAS RAILWAY EXPRESS, INC.5,100327
Activision Blizzard5,000323
Ventas4,719307
GrubHub5,800305
International Business Machines Corporation2,000290
Square9,600277
TripAdvisor6,600267
General Electric Co10,538255
Mesa Laboratories1,600239
CONTRAFECT Corp150,700167
Arcos Dorados Holdings Inc.10,370104
AU Optronics Corp16,90068

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