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13F-HR filed by WESTFIELD CAPITAL MANAGEMENT CO LP

WESTFIELD CAPITAL MANAGEMENT CO LP filed this 13F-HR for the quarter ended 2016-12-31, filed 2017-02-10, with 253 holding rows worth $11,405,054,000.

Accession
0001085146-17-000444
Filed
2017-02-10
Accepted by EDGAR
acceptance time not in the bulk data set
Ingested
Source
SEC quarterly data set

Original filing

13F report for Q4 2016

A holdings report, 253 entries on the cover page, a total value of $11,405,054,000 stated on the cover page (in dollars after the unit check, H1), rows summing to $11,405,054,000 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 Inc037833100COM2,259,452$261,690,000thousands by filing date
Microsoft Corp594918104COM3,462,649$215,169,000thousands by filing date
META PLATFORMS INC CL A30303M102COM1,566,739$180,253,000thousands by filing date
CELGENE CORP151020104COM1,442,768$167,000,000thousands by filing date
Visa Inc92826C839COM2,135,938$166,646,000thousands by filing date
STERIS PLCG84720104SHS USD2,439,037$164,367,000thousands by filing date
Alphabet Inc. Reg. Shares A02079K305COM204,276$161,879,000thousands by filing date
Alphabet Inc. Reg. Shares C02079K107COM204,903$158,148,000thousands by filing date
Amazon.com, Inc023135106COM210,628$157,944,000thousands by filing date
Salesforce.com, Inc79466L302COM2,270,923$155,467,000thousands by filing date
UNITED AIRLS HLDGS INC COM910047109Stock2,095,511$152,721,000thousands by filing date
Dow Chemical Company260543103COM2,667,564$152,638,000thousands by filing date
MARRIOTT INTL INC NEW CL A571903202Stock1,762,085$145,689,000thousands by filing date
Bristol-Myers Squibb Company110122108COM2,411,405$140,923,000thousands by filing date
JAZZ PHARMACEUTICALS PLC SHS USDG50871105Stock1,259,389$137,311,000thousands by filing date
NEWELL BRANDS INC COM651229106Stock2,971,490$132,677,000thousands by filing date
Union Pacific Corporation907818108COM1,278,910$132,597,000thousands by filing date
METTLER TOLEDO INTERNATIONAL COM592688105Stock311,446$130,359,000thousands by filing date
CHARTER COMMUNICATIONS INC N16119P108COM438,133$126,147,000thousands by filing date
ServiceNow,Inc.81762P102COM1,690,520$125,673,000thousands by filing date
Abbott Laboratories002824100COM3,132,392$120,315,000thousands by filing date
CELANESE CORP DEL COM150870103Stock1,460,954$115,036,000thousands by filing date
McDonalds Corporation580135101COM925,379$112,637,000thousands by filing date
VAIL RESORTS INC COM91879Q109Stock695,407$112,176,000thousands by filing date
AMETEK INC COM031100100Stock2,292,483$111,415,000thousands by filing date
CONSTELLATION BRANDS INC CL A21036P108Stock701,622$107,566,000thousands by filing date
Gilead Sciences,Inc.375558103COM1,401,979$100,396,000thousands by filing date
United Parcel Service,Inc. Class B911312106COM867,751$99,479,000thousands by filing date
UnitedHealth Group Inc91324P102COM600,425$96,092,000thousands by filing date
TJX Companies Inc872540109COM1,261,909$94,807,000thousands by filing date
CME Group Inc. Class A12572Q105COM821,295$94,736,000thousands by filing date
HUNT J B TRANS SVCS INC COM445658107Stock925,636$89,851,000thousands by filing date
Chubb LimitedH1467J104COM663,586$87,673,000thousands by filing date
Intel Corp458140100COM2,373,440$86,085,000thousands by filing date
Walt Disney Co254687106COM819,064$85,363,000thousands by filing date
LENNOX INTL INC COM526107107Stock547,310$83,831,000thousands by filing date
THE COOPER COMPANIES216648402COM NEW478,506$83,705,000thousands by filing date
GENERAL ELEC CO369604103COM2,635,248$83,274,000thousands by filing date
PAYPALHLDGSINC70450Y103STOK2,102,667$82,992,000thousands by filing date
MIDDLEBYCORP596278101STOK638,125$82,197,000thousands by filing date
PALO ALTO NETWORKS INC697435105COM651,090$81,419,000thousands by filing date
ON SEMICONDUCTOR CORP COM682189105Stock6,377,822$81,381,000thousands by filing date
NIELSEN HOLDINGS PLCG6518L108SHS EUR1,898,216$79,630,000thousands by filing date
Danaher Corporation235851102COM1,008,645$78,513,000thousands by filing date
LKQ CORP COM501889208Stock2,518,002$77,177,000thousands by filing date
TRANSDIGM GROUP INC COM893641100Stock306,976$76,425,000thousands by filing date
HD SUPPLY HLDGS INC40416M105COM1,763,617$74,971,000thousands by filing date
BERRY GLOBAL GROUP INC08579W103COM1,533,485$74,727,000thousands by filing date
NEXSTAR MEDIA GROUP INC COMMON STOCK65336K103Stock1,169,661$74,040,000thousands by filing date
SYNCHRONYFINL87165B103STOK1,996,209$72,403,000thousands by filing date
WATSCO INC COM942622200Stock473,519$70,138,000thousands by filing date
IHS MARKIT LTDG47567105SHS1,975,495$69,952,000thousands by filing date
BROADCOM LTDY09827109SHS389,838$68,912,000thousands by filing date
ICON PUB LTD CO SHSG4705A100Stock916,280$68,904,000thousands by filing date
MasterCard, Inc57636Q104COM661,385$68,288,000thousands by filing date
TWENTY FIRST CENTY FOX INC90130A101CL A2,333,523$65,432,000thousands by filing date
DELPHI AUTOMOTIVE PLCG27823106COMMON STOCK-FO966,197$65,073,000thousands by filing date
SCRIPPS NETWORKS INTERACT IN811065101CL A COM896,775$64,003,000thousands by filing date
QUEST DIAGNOSTICS INC COM74834L100Stock690,181$63,428,000thousands by filing date
TESORO CORP881609101COM719,855$62,951,000thousands by filing date
WRIGHT MED GROUP N VN96617118ORD SHS2,737,499$62,908,000thousands by filing date
BAKER HUGHES INC057224107COM960,832$62,425,000thousands by filing date
ARAMARK COM03852U106Stock1,735,285$61,984,000thousands by filing date
INSTALLED BLDG PRODS INC45780R101COM1,497,334$61,840,000thousands by filing date
ARIAD PHARMACEUTICALS INC04033A100COM4,957,058$61,666,000thousands by filing date
PINNACLE FOODS INC DEL72348P104COM1,144,482$61,173,000thousands by filing date
Applied Materials,Inc.038222105COM1,891,672$61,044,000thousands by filing date
COSTAR GROUP INC COM22160N109Stock323,036$60,889,000thousands by filing date
Adobe Inc00724F101COM585,098$60,236,000thousands by filing date
CIENA CORP COM NEW171779309Stock2,436,166$59,467,000thousands by filing date
MICROSEMI CORP595137100COM1,099,998$59,367,000thousands by filing date
TRANSUNION COM89400J107Stock1,905,801$58,946,000thousands by filing date
SABRE CORP COM78573M104Stock2,353,417$58,718,000thousands by filing date
Charles Schwab Corp808513105COM1,485,306$58,625,000thousands by filing date
PRICELINE GRP INC741503403COM NEW39,857$58,433,000thousands by filing date
Thermo Fisher Scientific Inc.883556102COM413,116$58,291,000thousands by filing date
HILL ROM HLDGS INC431475102COM1,017,223$57,107,000thousands by filing date
FORTINET INC COM34959E109Stock1,877,339$56,545,000thousands by filing date
NEUROCRINE BIOSCIENCES INC64125C109COM1,393,505$53,929,000thousands by filing date
MSCI INC COM55354G100Stock680,994$53,649,000thousands by filing date
EAST WEST BANCORP INC COM27579R104Stock1,053,162$53,532,000thousands by filing date
RYDER SYS INC COM783549108Stock707,608$52,674,000thousands by filing date
JBT MAREL CORPORATION477839104COM609,375$52,376,000thousands by filing date
PACIRA BIOSCIENCES INC COM695127100Stock1,603,681$51,799,000thousands by filing date
TOTAL SYS SVCS INC891906109COM1,048,396$51,403,000thousands by filing date
NEKTAR THERAPEUTICS640268108COM4,188,777$51,396,000thousands by filing date
AXALTA COATING SYS LTD COMG0750C108Stock1,887,810$51,348,000thousands by filing date
RED HAT INC756577102COM726,960$50,669,000thousands by filing date
RALPH LAUREN CORP751212101CL A551,305$49,794,000thousands by filing date
FIRST REPUBLIC BANK/SAN FRANCI33616C100COM529,642$48,801,000thousands by filing date
ALLEGIANT TRAVEL CO01748X102COM291,724$48,543,000thousands by filing date
HALLIBURTON CO COM406216101Stock890,699$48,178,000thousands by filing date
KELLANOVA487836108COM625,143$46,079,000thousands by filing date
RAYMOND JAMES FINL INC COM754730109Stock647,824$44,875,000thousands by filing date
DEXCOM INC COM252131107Stock748,796$44,703,000thousands by filing date
VALERO ENERGY CORP COM91913Y100Stock645,583$44,106,000thousands by filing date
VANTIV INC92210H105CL A728,945$43,460,000thousands by filing date
SEALED AIR CORP NEW81211K100COM946,970$42,936,000thousands by filing date
STAG INDUSTRIAL INC85254J102COM1,718,748$41,027,000thousands by filing date
OLD DOMINION FREIGHT LINE INC COM679580100Stock469,480$40,277,000thousands by filing date
KNOLL INC498904200COM NEW1,419,658$39,651,000thousands by filing date
SPLUNK INC848637104COM760,985$38,924,000thousands by filing date
LIONS GATE ENTMNT CORP535919500CL B NON VTG1,579,403$38,759,000thousands by filing date
MACQUARIE INFRASTRUCTURE HOLDI55608B105COMMON UNITS456,740$37,316,000thousands by filing date
SMITH A O CORP COM831865209Stock787,476$37,287,000thousands by filing date
GALLAGHER ARTHUR J & CO COM363576109Stock715,978$37,202,000thousands by filing date
MERRIMACK PHARMACEUTICALS IN590328100COM9,072,877$37,017,000thousands by filing date
BUILDERS FIRSTSOURCE INC COM12008R107Stock3,361,156$36,872,000thousands by filing date
SUMMIT MATERIALS INC CLASS A86614U100CL A1,538,511$36,601,000thousands by filing date
MASIMO CORP COM574795100Stock539,713$36,377,000thousands by filing date
MUELLER WTR PRODS INC COM SER A624758108Stock2,711,156$36,085,000thousands by filing date
CRANE CO224399105COM489,040$35,270,000thousands by filing date
JACK IN THE BOX INC466367109COM312,788$34,920,000thousands by filing date
BRIGHT HORIZONS FAM SOL IN DEL COM109194100Stock495,804$34,716,000thousands by filing date
GRACE W R & CO DEL NEW COM38388F108Stock513,105$34,706,000thousands by filing date
DAVE & BUSTERS ENTMT INC238337109COM610,745$34,385,000thousands by filing date
SIX FLAGS ENTERTAINMENT CORP83001A102COM568,582$34,092,000thousands by filing date
SPIRIT AIRLS INC848577102COM588,075$34,026,000thousands by filing date
ZAYO GROUP HLDGS INC COM98919V105Stock1,013,840$33,315,000thousands by filing date
ACCELERON PHARMA INC00434H108COM1,252,409$31,961,000thousands by filing date
CNO FINL GROUP INC12621E103COM1,629,815$31,211,000thousands by filing date
INTERPUBLIC GROUP COS460690100COM1,316,317$30,815,000thousands by filing date
OREILLY AUTOMOTIVE INC COM67103H107Stock109,284$30,426,000thousands by filing date
FCB Financial Holdings Inc Cla30255G103COM630,429$30,071,000thousands by filing date
INTEGRA LIFESCIENCES HLDGS C457985208COM NEW348,146$29,867,000thousands by filing date
MONOLITHIC PWR SYS INC COM609839105Stock355,277$29,108,000thousands by filing date
BROADSOFT INC11133B409COM699,259$28,844,000thousands by filing date
LIBERTY BROADBAND A530307107COMMON STOCK383,545$27,792,000thousands by filing date
NORFOLK SOUTHN CORP COM655844108Stock254,893$27,546,000thousands by filing date
WESTERN REFNG INC959319104COM718,890$27,210,000thousands by filing date
CYRUSONE INC23283R100COM607,621$27,179,000thousands by filing date
MADISON SQUARE GRDN SPRT CORP CL A55825T103Stock157,200$26,961,000thousands by filing date
SCOTTS MIRACLE-GRO CO810186106CL A278,482$26,609,000thousands by filing date
RUSH ENTERPRISES INC CL A781846209Stock832,231$26,548,000thousands by filing date
ELECTRONICS FOR IMAGING INC286082102COM591,135$25,927,000thousands by filing date
VULCAN MATLS CO COM929160109Stock206,550$25,850,000thousands by filing date
CYPRESS SEMICONDUCTOR CORP232806109COM2,258,265$25,835,000thousands by filing date
CYBERARK SOFTWARE LTD SHSM2682V108Stock566,335$25,768,000thousands by filing date
LIONS GATE ENTMNT CORP535919401CL A VTG953,678$25,654,000thousands by filing date
NICE LTD SPONSORED ADR653656108ADR370,023$25,443,000thousands by filing date
ARRIS INTL INC SHSG0551A103SHS844,059$25,431,000thousands by filing date
KLA CORP482480100COM320,400$25,209,000thousands by filing date
ZENDESK INC98936J101COM1,180,635$25,029,000thousands by filing date
ALIGN TECHNOLOGY INC COM016255101Stock259,323$24,929,000thousands by filing date
WESTERN ALLIANCE BANCORP COM957638109Stock508,345$24,761,000thousands by filing date
REALPAGE INC75606N109COM810,983$24,329,000thousands by filing date
OMNICELL COM COM68213N109Stock713,546$24,189,000thousands by filing date
INTERXION HOLDING N.VN47279109SHS684,700$24,012,000thousands by filing date
LULULEMON ATHLETICA INC550021109COM367,218$23,865,000thousands by filing date
STARWOOD PPTY TR INC COM85571B105REIT1,077,691$23,655,000thousands by filing date
LIVE NATION ENTERTAINMENT INC COM538034109Stock887,960$23,620,000thousands by filing date
BREAD FINANCIAL HOLDINGS INC018581108COM102,192$23,351,000thousands by filing date
CHUY'S HOLDINGS INC171604101COMMON STOCK716,215$23,241,000thousands by filing date
ALKERMES PLCG01767105SHS410,415$22,811,000thousands by filing date
DENTSPLY SIRONA INC24906P109COM389,619$22,493,000thousands by filing date
TELEFLEX INCORPORATED879369106COM136,241$21,955,000thousands by filing date
UNIVAR INC91336L107COMMON STOCK763,190$21,652,000thousands by filing date
ACUSHNET HLDGS CORP005098108COM1,096,795$21,618,000thousands by filing date
HEICO CORP NEW422806208CL A316,805$21,511,000thousands by filing date
NORD ANGLIA EDUCATION INCG6583A102SHS920,480$21,447,000thousands by filing date
HEXCEL CORP NEW428291108COM411,916$21,189,000thousands by filing date
THE ULTIMATE SOFTWARE GROUP IN90385D107COM115,889$21,132,000thousands by filing date
ELDORADO RESORTS INC28470R102COM1,235,696$20,945,000thousands by filing date
BRUNSWICK CORP117043109COM377,721$20,601,000thousands by filing date
AUTONATION INC COM05329W102Stock421,780$20,520,000thousands by filing date
ORBOTECH LTDM75253100ORD605,477$20,229,000thousands by filing date
CAVIUM INC14964U108COM315,750$19,715,000thousands by filing date
COMMVAULT SYS INC COM204166102Stock381,277$19,598,000thousands by filing date
BIOMARIN PHARMACEUTICAL INC09061G101COM236,470$19,589,000thousands by filing date
AMERICAN WOODMARK CORP030506109COM259,843$19,553,000thousands by filing date
SVB FINANCIAL GROUP78486Q101COM113,266$19,443,000thousands by filing date
BGC PARTNERS INC05541T101CL A1,884,515$19,279,000thousands by filing date
CLOVIS ONCOLOGY INC189464100COM429,185$19,064,000thousands by filing date
PVH CORPORATION COM693656100Stock210,000$18,950,000thousands by filing date
HAIN CELESTIAL GROUP INC405217100COM482,179$18,819,000thousands by filing date
EURONET WORLDWIDE INC COM298736109Stock259,675$18,808,000thousands by filing date
MILLERKNOLL INC600544100COM540,245$18,476,000thousands by filing date
ULTA BEAUTY INC COM90384S303Stock71,227$18,159,000thousands by filing date
CULLEN FROST BANKERS INC COM229899109Stock205,291$18,113,000thousands by filing date
LUMENTUM HLDGS INC COM55024U109Stock466,190$18,018,000thousands by filing date
SHOPIFY INC82509L107CL A SUB VTG SHS418,390$17,936,000thousands by filing date
NATIONAL STORAGE AFFILIATES TR COM SHS BEN IN637870106REIT791,597$17,471,000thousands by filing date
MATSON INC COM57686G105Stock493,345$17,459,000thousands by filing date
CROWN CASTLE INC COM22822V101REIT200,330$17,383,000thousands by filing date
MULTI-COLOR625383104COM223,330$17,330,000thousands by filing date
FORTUNE BRANDS INNOVATIONS INC COM34964C106Stock320,249$17,121,000thousands by filing date
SOTHEBYS835898107COM428,585$17,083,000thousands by filing date
TABLEAU SOFTWARE INC87336U105CL A404,685$17,057,000thousands by filing date
EXPEDIA GROUP INC COM NEW30212P303Stock149,380$16,922,000thousands by filing date
HURON CONSULTING GROUP INC447462102COM333,522$16,893,000thousands by filing date
FLOWSERVE CORP34354P105COM345,365$16,595,000thousands by filing date
FOUR CORNERS PPTY TR INC35086T109COM806,020$16,540,000thousands by filing date
PROOFPOINT INC743424103COM233,579$16,502,000thousands by filing date
MARKETAXESS HLDGS INC57060D108COM112,113$16,472,000thousands by filing date
PROTHENA CORP PLC SHSG72800108Stock328,275$16,148,000thousands by filing date
WNS HOLDINGS LTD92932M101SPON ADR579,660$15,970,000thousands by filing date
ISLE OF CAPRI CASINOS464592104COMMON STOCK645,199$15,930,000thousands by filing date
SITEONE LANDSCAPE SUPPLY INC82982L103COM424,716$14,750,000thousands by filing date
LIFE STORAGE INC53223X107COM167,025$14,241,000thousands by filing date
HASBRO INC COM418056107Stock181,485$14,118,000thousands by filing date
CARDIOME PHARMA CORP14159U301COM NO PAR5,078,393$14,016,000thousands by filing date
INPHI CORP45772F107COM297,147$13,259,000thousands by filing date
Comcast Corp20030N101COM186,070$12,848,000thousands by filing date
KLX INC482539103COM270,240$12,191,000thousands by filing date
ACLARIS THERAPEUTICS INC COM00461U105Stock448,215$12,165,000thousands by filing date
COMMUNITY USD0.0120369C106COM510,830$11,764,000thousands by filing date
MARTEN TRANSPORT LTD573075108COM490,554$11,430,000thousands by filing date
MASTEC INC COM576323109Stock291,906$11,165,000thousands by filing date
COGNIZANT TECHNOLOGY SOLUTIONS CL A192446102Stock199,210$11,162,000thousands by filing date
GENESCO INC371532102COM165,570$10,282,000thousands by filing date
SUN CMNTYS INC COM866674104REIT134,021$10,267,000thousands by filing date
SKYWORKS SOLUTIONS INC COM83088M102Stock134,910$10,072,000thousands by filing date
MGIC INVT CORP WIS COM552848103Stock857,120$8,734,000thousands by filing date
ALDER BIOPHARMACEUTICALS INC014339105COM398,315$8,285,000thousands by filing date
Cisco Systems,Inc.17275R102COM270,885$8,186,000thousands by filing date
HENRY JACK & ASSOC INC426281101COM91,464$8,120,000thousands by filing date
JPMorgan Chase & Co46625H100COM92,810$8,009,000thousands by filing date
Lockheed Martin Corporation539830109COM26,366$6,590,000thousands by filing date
PENSKE AUTOMOTIVE GRP INC COM70959W103Stock125,155$6,488,000thousands by filing date
Marine Harvest ASA56824R205ADR351,965$6,381,000thousands by filing date
ARCHER DANIELS MIDLAND CO COM039483102Stock137,710$6,286,000thousands by filing date
DELTA AIR LINES INC COM NEW247361702Stock113,230$5,570,000thousands by filing date
FEDEX CORP COM31428X106Stock27,920$5,199,000thousands by filing date
WESTERN DIGITAL CORP958102105COM76,140$5,174,000thousands by filing date
KIMBERLY-CLARK CORP COM494368103Stock41,427$4,728,000thousands by filing date
ISHARES TR464287648RUS 2000 GRW ETF30,125$4,637,000thousands by filing date
ORION S.A.L72967109COM218,435$4,117,000thousands by filing date
BORGWARNER INC COM099724106Stock98,270$3,876,000thousands by filing date
MICROCHIP TECHNOLOGY INC. COM595017104Stock57,120$3,664,000thousands by filing date
ISHARESRUSSELL1000GROWTHETF464287614STOK23,893$2,506,000thousands by filing date
BAXTER INTL INC071813109COM45,355$2,011,000thousands by filing date
Verizon Communications Inc92343V104COM35,325$1,886,000thousands by filing date
ISHARES RUSSELL MID-CAP GROWTH ETF464287481ETF16,205$1,578,000thousands by filing date
CHEMTURA CORP163893209COM NEW42,730$1,419,000thousands by filing date
WASTE CONNECTIONS INC COM94106B101Stock14,625$1,149,000thousands by filing date
KIRBY CORP497266106COM16,590$1,103,000thousands by filing date
AFFILIATED MANAGERS GROUP COM008252108Stock5,310$772,000thousands by filing date
CVS Health Corporation126650100COM9,500$750,000thousands by filing date
Merck & Co.,Inc.58933Y105COM12,159$716,000thousands by filing date
Schlumberger Limited806857108COM8,424$707,000thousands by filing date
3M CO COM88579Y101Stock3,250$580,000thousands by filing date
CSX Corporation126408103COM15,000$539,000thousands by filing date
ISHARES CORE S&P U.S. GROWTH ETF464287671ETF11,330$486,000thousands by filing date
THE CAMPBELLS COMPANY COM134429109Stock6,000$363,000thousands by filing date
NEW MEDIA INVT GROUP INC64704V106COM21,500$344,000thousands by filing date
International Business Machines Corporation459200101COM2,000$332,000thousands by filing date
HUDSON TECHNOLOGIES INC444144109COMMON STOCK40,000$320,000thousands by filing date
STATE STR CORP COM857477103Stock3,840$298,000thousands by filing date
VENTAS INC COM92276F100REIT4,719$295,000thousands by filing date
CONSTELLIUM NV-CLASS AN22035104CL A49,900$294,000thousands by filing date
ERA GROUP INC26885G109COM16,500$280,000thousands by filing date
GREENBRIER COS INC393657101COM5,100$212,000thousands by filing date
HELIX ENERGY SOLUTIONS GRP INC COM42330P107Stock18,700$165,000thousands by filing date

Amendment chain

FilingRoleFiledAcceptedIngested
13F-HR 0001085146-17-000444this filing2017-02-10acceptance time not in the bulk data set