Skip to content

13F-HR filed by WESTFIELD CAPITAL MANAGEMENT CO LP

WESTFIELD CAPITAL MANAGEMENT CO LP filed this 13F-HR for the quarter ended 2018-09-30, filed 2018-11-14, with 249 holding rows worth $14,242,796,000.

Accession
0001085146-18-002703
Filed
2018-11-14
Accepted by EDGAR
acceptance time not in the bulk data set
Ingested
Source
SEC quarterly data set

Original filing

13F report for Q3 2018

A holdings report, 249 entries on the cover page, a total value of $14,242,796,000 stated on the cover page (in dollars after the unit check, H1), rows summing to $14,242,796,000 with VALUE read as thousands by filing date, 13F file number 028-10220. The quarter's positions are built on this report. The resolved quarter.

The information table after summing rows of one CUSIP and put or call (H4), with the CUSIP and issuer name as filed. Values in dollars after the unit check (method).

Issuer as filedCUSIPClassAmountValueValue read asType
Apple Inc037833100COM2,122,458$479,124,000thousands by filing date
Amazon.com, Inc023135106COM213,380$427,400,000thousands by filing date
Microsoft Corp594918104COM2,468,537$282,327,000thousands by filing date
Visa Inc92826C839COM1,826,555$274,148,000thousands by filing date
Alphabet Inc. Reg. Shares C02079K107COM202,940$242,203,000thousands by filing date
ANDEAVOR03349M105COM1,509,573$231,719,000thousands by filing date
Boeing Company097023105COM620,495$230,762,000thousands by filing date
METTLER TOLEDO INTERNATIONAL COM592688105Stock350,227$213,281,000thousands by filing date
THE COOPER COMPANIES216648402COM NEW716,312$198,526,000thousands by filing date
Salesforce.com, Inc79466L302COM1,248,172$198,497,000thousands by filing date
Alphabet Inc. Reg. Shares A02079K305COM161,978$195,520,000thousands by filing date
Union Pacific Corporation907818108COM1,167,669$190,132,000thousands by filing date
AMETEK INC COM031100100Stock2,401,547$190,010,000thousands by filing date
Home Depot, Inc437076102COM915,692$189,686,000thousands by filing date
JAZZ PHARMACEUTICALS PLC SHS USDG50871105Stock1,112,735$187,084,000thousands by filing date
UnitedHealth Group Inc91324P102COM695,685$185,080,000thousands by filing date
ServiceNow,Inc.81762P102COM859,187$168,083,000thousands by filing date
META PLATFORMS INC CL A30303M102COM953,354$156,789,000thousands by filing date
TELEDYNE TECHNOLOGIES INC COM879360105Stock612,832$151,173,000thousands by filing date
INGERSOLL-RAND PLCG47791101SHS1,319,846$135,020,000thousands by filing date
Adobe Inc00724F101COM497,548$134,313,000thousands by filing date
Costco Wholesale Corporation22160K105COM557,419$130,927,000thousands by filing date
ILLINOIS TOOL WKS INC452308109COM919,199$129,717,000thousands by filing date
Progressive Corporation743315103COM1,800,805$127,929,000thousands by filing date
CONAGRA FOODS INC205887102COM3,698,889$125,651,000thousands by filing date
MasterCard, Inc57636Q104COM554,478$123,432,000thousands by filing date
CELGENE CORP151020104COM1,375,666$123,108,000thousands by filing date
Thermo Fisher Scientific Inc.883556102COM488,653$119,270,000thousands by filing date
EOG RES INC COM26875P101Stock930,089$118,651,000thousands by filing date
HUNT J B TRANS SVCS INC COM445658107Stock994,659$118,305,000thousands by filing date
MEDICINES CO584688105COM3,787,211$113,275,000thousands by filing date
WORLDPAY INC981558109CL A1,098,266$111,221,000thousands by filing date
CELANESE CORP DEL COM150870103Stock967,365$110,280,000thousands by filing date
BIO RAD LABS INC090572207CL A346,753$108,530,000thousands by filing date
Netflix, Inc64110L106COM286,950$107,357,000thousands by filing date
MARRIOTT INTL INC NEW CL A571903202Stock806,178$106,440,000thousands by filing date
Vertex Pharmaceuticals Incorporated92532F100COM549,429$105,897,000thousands by filing date
CHARTER COMMUNICATIONS INC N16119P108COM320,443$104,426,000thousands by filing date
TOTAL SYS SVCS INC891906109COM1,046,078$103,290,000thousands by filing date
TRANSDIGM GROUP INC COM893641100Stock272,737$101,540,000thousands by filing date
LENNOX INTL INC COM526107107Stock462,442$100,997,000thousands by filing date
FORTINET INC COM34959E109Stock1,091,590$100,721,000thousands by filing date
AVERY DENNISON CORP COM053611109Stock923,502$100,061,000thousands by filing date
CME Group Inc. Class A12572Q105COM584,481$99,485,000thousands by filing date
GALLAGHER ARTHUR J & CO COM363576109Stock1,330,170$99,018,000thousands by filing date
ICON PUB LTD CO SHSG4705A100Stock643,879$98,996,000thousands by filing date
Wells Fargo & Company949746101COM1,878,284$98,723,000thousands by filing date
PAYPALHLDGSINC70450Y103STOK1,113,800$97,836,000thousands by filing date
S&P Global,Inc.78409V104COM478,682$93,530,000thousands by filing date
Bristol-Myers Squibb Company110122108COM1,463,591$90,860,000thousands by filing date
PIONEER NATURAL RESOURCES CO723787107COM517,567$90,155,000thousands by filing date
ALIBABA GROUP HLDG LTD01609W102SPONSORED ADS538,340$88,697,000thousands by filing date
Walt Disney Co254687106COM750,674$87,784,000thousands by filing date
CARNIVAL CORP COMMON STOCK143658300Stock1,367,929$87,233,000thousands by filing date
APTIV PLCG6095L109SHS1,007,658$84,543,000thousands by filing date
TRANSUNION COM89400J107Stock1,145,038$84,252,000thousands by filing date
NIKE,Inc. Class B654106103COM964,775$81,736,000thousands by filing date
FLOWSERVE CORP34354P105COM1,439,731$78,739,000thousands by filing date
LPL FINL HLDGS INC COM50212V100Stock1,206,475$77,830,000thousands by filing date
FIDELITY NATL INFORMATION SVCS COM31620M106Stock705,232$76,920,000thousands by filing date
BIOGEN INC COM09062X103Stock217,301$76,775,000thousands by filing date
MADISON SQUARE GRDN SPRT CORP CL A55825T103Stock241,135$76,035,000thousands by filing date
RAYMOND JAMES FINL INC COM754730109Stock823,116$75,768,000thousands by filing date
QUEST DIAGNOSTICS INC COM74834L100Stock686,291$74,058,000thousands by filing date
WPX ENERGY INC98212B103COM3,667,345$73,787,000thousands by filing date
NXP SEMICONDUCTORS N V COMN6596X109Stock852,488$72,888,000thousands by filing date
Applied Materials,Inc.038222105COM1,872,424$72,369,000thousands by filing date
FLEETCOR TECHNOLOGIES INC339041105COM314,956$71,760,000thousands by filing date
IHS MARKIT LTDG47567105SHS1,310,341$70,706,000thousands by filing date
STERIS PLCG84720104SHS USD617,832$70,680,000thousands by filing date
SPLUNK INC848637104COM573,461$69,337,000thousands by filing date
ACCELERON PHARMA INC00434H108COM1,184,308$67,778,000thousands by filing date
NEXSTAR MEDIA GROUP INC COMMON STOCK65336K103Stock830,563$67,608,000thousands by filing date
RED HAT INC756577102COM492,048$67,056,000thousands by filing date
NICE LTD SPONSORED ADR653656108ADR584,018$66,853,000thousands by filing date
ULTA BEAUTY INC COM90384S303Stock235,607$66,469,000thousands by filing date
SERVICEMASTER GLOBAL HOLDING81761R109COMMON STOCK1,065,075$66,067,000thousands by filing date
PBF ENERGY INC69318G106CL A1,240,830$61,930,000thousands by filing date
WEX INC96208T104COM302,957$60,822,000thousands by filing date
WESTERN ALLIANCE BANCORP COM957638109Stock1,068,925$60,811,000thousands by filing date
LAM RESEARCH CORP512807108COM396,529$60,153,000thousands by filing date
GUIDEWIRE SOFTWARE INC COM40171V100Stock580,719$58,658,000thousands by filing date
UNIVAR INC91336L107COMMON STOCK1,898,525$58,209,000thousands by filing date
BANK OF N T BUTTERFIELD & SOG0772R208SHS NEW1,089,170$56,484,000thousands by filing date
HILTON WORLDWIDE HLDGS INC COM43300A203Stock682,832$55,159,000thousands by filing date
Micron Technology,Inc.595112103COM1,214,295$54,923,000thousands by filing date
LIONS GATE ENTMNT CORP535919500CL B NON VTG2,356,168$54,899,000thousands by filing date
XILINX INC983919101COM675,845$54,182,000thousands by filing date
THE ULTIMATE SOFTWARE GROUP IN90385D107COM168,167$54,182,000thousands by filing date
ZENDESK INC98936J101COM757,013$53,748,000thousands by filing date
REALPAGE INC75606N109COM801,915$52,846,000thousands by filing date
GODADDY INC CL A380237107Stock631,180$52,634,000thousands by filing date
BLACK KNIGHT INC COM09215C105Stock1,009,196$52,428,000thousands by filing date
IDEXX LABS INC COM45168D104Stock203,475$50,800,000thousands by filing date
JACK IN THE BOX INC466367109COM598,880$50,204,000thousands by filing date
INTEGRA LIFESCIENCES HLDGS C457985208COM NEW738,996$48,678,000thousands by filing date
AUTODESK INC COM052769106Stock307,414$47,990,000thousands by filing date
FLIR SYS INC302445101COM767,137$47,156,000thousands by filing date
DIAMONDBACK ENERGY INC COM25278X109Stock333,842$45,132,000thousands by filing date
PVH CORPORATION COM693656100Stock312,539$45,131,000thousands by filing date
ON SEMICONDUCTOR CORP COM682189105Stock2,445,278$45,066,000thousands by filing date
CRANE CO224399105COM451,142$44,370,000thousands by filing date
UNITED AIRLS HLDGS INC COM910047109Stock489,663$43,609,000thousands by filing date
SVB FINANCIAL GROUP78486Q101COM140,107$43,549,000thousands by filing date
ALEXANDRIA REAL ESTATE EQ INC COM015271109REIT345,852$43,505,000thousands by filing date
DELPHI TECHNOLOGIES PLCG2709G107SHS1,385,272$43,442,000thousands by filing date
TIFFANY & CO NEW886547108COM335,796$43,308,000thousands by filing date
BURLINGTON STORES INC COM122017106Stock264,830$43,146,000thousands by filing date
BERRY GLOBAL GROUP INC08579W103COM882,601$42,709,000thousands by filing date
PALO ALTO NETWORKS INC697435105COM188,657$42,497,000thousands by filing date
GARTNERINC366651107STOK268,071$42,489,000thousands by filing date
SUMMIT MATERIALS INC CLASS A86614U100CL A2,335,258$42,455,000thousands by filing date
COMMVAULT SYS INC COM204166102Stock604,217$42,295,000thousands by filing date
SBA COMMUNICATIONS CORP CL A78410G104REIT262,139$42,107,000thousands by filing date
CATALENT INC USD 0.01148806102COM918,016$41,816,000thousands by filing date
AMERICAN EAGLE OUTFITTERS INC COM02553E106Stock1,673,745$41,559,000thousands by filing date
ASCENDIS PHARMA A/S DKK 1.0 AD04351P101SPONSORED ADR581,734$41,222,000thousands by filing date
ESSENT GROUP LTD COMG3198U102Stock925,627$40,959,000thousands by filing date
ALEXION PHARMACEUTICALS INC015351109COM288,329$40,081,000thousands by filing date
RPM INTL INC COM749685103Stock614,965$39,936,000thousands by filing date
BLUEPRINT MEDICINES CORP09627Y109COM509,380$39,762,000thousands by filing date
PINNACLE FOODS INC DEL72348P104COM606,772$39,325,000thousands by filing date
VAIL RESORTS INC COM91879Q109Stock140,330$38,509,000thousands by filing date
ELDORADO RESORTS INC28470R102COM787,784$38,286,000thousands by filing date
MSCI INC COM55354G100Stock214,426$38,041,000thousands by filing date
INGEVITY CORP COM45688C107Stock361,730$36,853,000thousands by filing date
COSTAR GROUP INC COM22160N109Stock86,887$36,566,000thousands by filing date
ORION S.A.L72967109COM1,136,263$36,474,000thousands by filing date
ENVESTNET INC29404K106COM593,820$36,193,000thousands by filing date
RUSH ENTERPRISES INC CL A781846209Stock910,181$35,779,000thousands by filing date
SUN CMNTYS INC COM866674104REIT351,098$35,650,000thousands by filing date
NETAPP INC COM64110D104Stock414,211$35,577,000thousands by filing date
GRACE W R & CO DEL NEW COM38388F108Stock495,178$35,385,000thousands by filing date
CONSTELLATION BRANDS INC CL A21036P108Stock162,395$35,016,000thousands by filing date
PTC INC COM69370C100Stock326,888$34,712,000thousands by filing date
IRONWOOD PHARMACEUTICALS INC46333X108COMMON STOCK1,878,809$34,683,000thousands by filing date
ROCKWELL AUTOMATION INC COM773903109Stock184,923$34,677,000thousands by filing date
DAVE & BUSTERS ENTMT INC238337109COM519,865$34,425,000thousands by filing date
BGC PARTNERS INC05541T101CL A2,910,797$34,406,000thousands by filing date
MSA SAFETY INC COM553498106Stock321,635$34,235,000thousands by filing date
INTERXION HOLDING N.VN47279109SHS507,086$34,127,000thousands by filing date
TABLEAU SOFTWARE INC87336U105CL A299,400$33,455,000thousands by filing date
HAEMONETICS CORP MASS COM405024100Stock290,593$33,296,000thousands by filing date
EAST WEST BANCORP INC COM27579R104Stock547,536$33,055,000thousands by filing date
VULCAN MATLS CO COM929160109Stock296,977$33,024,000thousands by filing date
RYDER SYS INC COM783549108Stock451,485$32,990,000thousands by filing date
CENTENNIAL RESOURCE DEV INC15136A102CL A1,492,470$32,610,000thousands by filing date
HEICO CORP NEW422806208CL A428,553$32,356,000thousands by filing date
BRIGHT HORIZONS FAM SOL IN DEL COM109194100Stock273,958$32,283,000thousands by filing date
TRINSEO S AL9340P101SHS407,410$31,900,000thousands by filing date
CANTEL MEDICAL CORP138098108COM341,326$31,422,000thousands by filing date
EXPEDIA GROUP INC COM NEW30212P303Stock235,603$30,741,000thousands by filing date
MILACRON HLDGS CORP59870L106COM1,470,546$29,779,000thousands by filing date
PACIFIC PREMIER BANCORP INC69478X105COM784,232$29,173,000thousands by filing date
MASIMO CORP COM574795100Stock233,137$29,035,000thousands by filing date
PARTY CITY HOLDCO INC702149105COM2,141,185$29,013,000thousands by filing date
NUANCE COMMUNICATIONS INC67020Y100COM1,599,015$27,695,000thousands by filing date
PENN ENTERTAINMENT INC COM707569109Stock837,830$27,581,000thousands by filing date
TRACTOR SUPPLY CO COM892356106Stock293,563$26,679,000thousands by filing date
QTS RLTY TR INC74736A103COM CL A620,618$26,482,000thousands by filing date
ROBERT HALF INC. COM770323103Stock374,282$26,342,000thousands by filing date
KEMPER CORP COM488401100Stock326,642$26,278,000thousands by filing date
PROOFPOINT INC743424103COM244,700$26,019,000thousands by filing date
E TRADE FINANCIAL CORP269246401COM NEW489,660$25,653,000thousands by filing date
HFF INC40418F108CL A572,378$24,315,000thousands by filing date
MKS INC. COM55306N104Stock302,851$24,274,000thousands by filing date
HAMILTON LANE INC407497106CL A543,245$24,055,000thousands by filing date
COMMSCOPE HLDG CO INC20337X109COM780,552$24,010,000thousands by filing date
NCR VOYIX CORPORATION62886E108COM837,759$23,801,000thousands by filing date
MASTEC INC COM576323109Stock532,659$23,783,000thousands by filing date
OLD DOMINION FREIGHT LINE INC COM679580100Stock147,097$23,721,000thousands by filing date
OMNICELL COM COM68213N109Stock329,569$23,696,000thousands by filing date
ACACIA COMMUNICATIONS INC00401C108COM532,175$22,016,000thousands by filing date
GREEN DOT CORP CLASS A39304D102CL A247,383$21,973,000thousands by filing date
ALARM COM HLDGS INC COM011642105Stock373,760$21,454,000thousands by filing date
NATIONAL VISION HLDGS INC COM63845R107Stock474,625$21,425,000thousands by filing date
WRIGHT MED GROUP N VN96617118ORD SHS720,576$20,911,000thousands by filing date
WNS HOLDINGS LTD92932M101SPON ADR408,595$20,736,000thousands by filing date
WATSCO INC COM942622200Stock114,290$20,355,000thousands by filing date
ADVANCED ENERGY INDS COM007973100Stock386,003$19,937,000thousands by filing date
DEXCOM INC COM252131107Stock137,792$19,710,000thousands by filing date
ARISTA NETWORKS INC040413106COM72,521$19,280,000thousands by filing date
CLOVIS ONCOLOGY INC189464100COM653,658$19,198,000thousands by filing date
CORREVIO PHARMA CORP22026V105COM4,774,149$19,192,000thousands by filing date
LINCOLN ELEC HLDGS INC533900106COM204,980$19,153,000thousands by filing date
FULLER H B CO COM359694106Stock348,794$18,022,000thousands by filing date
NEKTAR THERAPEUTICS640268108COM265,261$16,170,000thousands by filing date
SAREPTA THERAPEUTICS INC803607100COM94,655$15,288,000thousands by filing date
ALNYLAM PHARMACEUTICALS INC COM02043Q107Stock170,855$14,953,000thousands by filing date
INTERSECT ENT INC46071F103COM474,282$13,636,000thousands by filing date
FATE THERAPEUTICS INC31189P102COM832,070$13,554,000thousands by filing date
VIAVI SOLUTIONS INC925550105COM1,175,395$13,329,000thousands by filing date
FIBROGEN INC31572Q808COM209,575$12,732,000thousands by filing date
ULTRA CLEAN HLDGS INC COM90385V107Stock1,011,698$12,697,000thousands by filing date
EVOLENT HEALTH INC CL A30050B101Stock416,980$11,842,000thousands by filing date
APELLIS PHARMACEUTICALS INC03753U106COM612,296$10,887,000thousands by filing date
FLOOR & DECOR HLDGS INC CL A339750101Stock358,246$10,808,000thousands by filing date
NOVOCURE LTDG6674U108ORD SHS205,805$10,784,000thousands by filing date
NEW RELIC INC64829B100COMMON STOCK114,074$10,749,000thousands by filing date
CAMDEN PPTY TR SH BEN INT133131102REIT111,931$10,473,000thousands by filing date
Abbott Laboratories002824100COM140,220$10,287,000thousands by filing date
MGP INGREDIENTS INC NEW55303J106COM129,502$10,228,000thousands by filing date
CYMABAY THERAPEUTICS INC23257D103COM909,380$10,076,000thousands by filing date
NN INC629337106COM636,665$9,932,000thousands by filing date
Walmart Inc.931142103COM99,215$9,317,000thousands by filing date
Texas Instruments Incorporated882508104COM76,435$8,201,000thousands by filing date
HENRY JACK & ASSOC INC426281101COM50,144$8,027,000thousands by filing date
OCCIDENTAL PETE CORP674599105COM96,625$7,940,000thousands by filing date
JPMorgan Chase & Co46625H100COM67,830$7,654,000thousands by filing date
Verizon Communications Inc92343V104COM140,635$7,509,000thousands by filing date
DOWDUPONT INC26078J100COM116,364$7,483,000thousands by filing date
Merck & Co.,Inc.58933Y105COM103,919$7,372,000thousands by filing date
ROYAL CARIBBEAN GROUP COMV7780T103Stock52,865$6,869,000thousands by filing date
Medtronic PlcG5960L103COM67,260$6,616,000thousands by filing date
INPHI CORP45772F107COM173,990$6,608,000thousands by filing date
ANDEAVOR LOGISTICS LP NPV03350F106COM UNIT LP INT123,865$6,015,000thousands by filing date
NextEra Energy,Inc.65339F101COM31,020$5,199,000thousands by filing date
ARCHER DANIELS MIDLAND CO COM039483102Stock98,745$4,964,000thousands by filing date
International Business Machines Corporation459200101COM32,530$4,919,000thousands by filing date
MICROCHIP TECHNOLOGY INC. COM595017104Stock56,495$4,458,000thousands by filing date
Danaher Corporation235851102COM37,592$4,085,000thousands by filing date
SUNCOR ENERGY INC NEW COM867224107Stock104,725$4,052,000thousands by filing date
Bank of America Corp060505104COM97,930$2,885,000thousands by filing date
INTEGRATED DEVICE TECHNOLOGY INC458118106COMMON STOCK60,580$2,848,000thousands by filing date
LIVE NATION ENTERTAINMENT INC COM538034109Stock47,350$2,579,000thousands by filing date
SIX FLAGS ENTERTAINMENT CORP83001A102COM34,989$2,443,000thousands by filing date
MARTEN TRANSPORT LTD573075108COM98,166$2,066,000thousands by filing date
BOYDGAMINGCORP103304101STOK56,210$1,903,000thousands by filing date
CSX Corporation126408103COM15,000$1,111,000thousands by filing date
WASTE CONNECTIONS INC COM94106B101Stock12,686$1,012,000thousands by filing date
BREAD FINANCIAL HOLDINGS INC018581108COM3,350$791,000thousands by filing date
SPDR GOLD TR78463V107GOLD SHS6,300$710,000thousands by filing date
LIONS GATE ENTMNT CORP535919401CL A VTG27,795$678,000thousands by filing date
ACTVISION BLIZZARD INC00507V109COM6,900$574,000thousands by filing date
SPDR SERIES TRUST78464A698ST STR SP REGBNK8,900$529,000thousands by filing date
MONARCH CASINO & RESORT INC609027107COM10,700$486,000thousands by filing date
WEST PHARMACEUTICAL SVSC INC COM955306105Stock3,700$457,000thousands by filing date
PAGSEGURO DIGITAL LTDG68707101COM CL A15,400$426,000thousands by filing date
AXALTA COATING SYS LTD COMG0750C108Stock14,200$414,000thousands by filing date
UNITED RENTALS INC COM911363109Stock2,300$376,000thousands by filing date
TRIVAGO N V SPON ADS A SHS N89686D105ADR59,800$368,000thousands by filing date
ROCKET PHARMACEUTICALS INC77313F106COM14,900$367,000thousands by filing date
CZR127686103Stock35,400$363,000thousands by filing date
INTERNATIONAL GAME TECHNOLOGG4863A108SHS USD17,500$346,000thousands by filing date
Inflarx NvN44821101COM9,400$323,000thousands by filing date
Schlumberger Limited806857108COM4,824$294,000thousands by filing date
DOVA PHARMACEUTICALS INC25985T102COM12,800$268,000thousands by filing date
VENTAS INC COM92276F100REIT4,719$257,000thousands by filing date
SALEM MEDIA GROUP INC CLASS A794093104COM40,619$138,000thousands by filing date

Amendment chain

FilingRoleFiledAcceptedIngested
13F-HR 0001085146-18-002703this filing2018-11-14acceptance time not in the bulk data set