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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 2017-03-31, filed 2017-05-12, with 258 holding rows worth $11,648,480,000.

Accession
0001085146-17-001209
Filed
2017-05-12
Accepted by EDGAR
acceptance time not in the bulk data set
Ingested
Source
SEC quarterly data set

Original filing

13F report for Q1 2017

A holdings report, 258 entries on the cover page, a total value of $11,648,480,000 stated on the cover page (in dollars after the unit check, H1), rows summing to $11,648,480,000 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 Inc037833100COM2,211,060$317,641,000thousands by filing date
META PLATFORMS INC CL A30303M102COM1,589,416$225,777,000thousands by filing date
JAZZ PHARMACEUTICALS PLC SHS USDG50871105Stock1,377,214$199,875,000thousands by filing date
Microsoft Corp594918104COM3,013,932$198,498,000thousands by filing date
Amazon.com, Inc023135106COM222,453$197,213,000thousands by filing date
Visa Inc92826C839COM2,076,936$184,577,000thousands by filing date
MARRIOTT INTL INC NEW CL A571903202Stock1,863,301$175,486,000thousands by filing date
CELGENE CORP151020104COM1,403,327$174,616,000thousands by filing date
Alphabet Inc. Reg. Shares A02079K305COM198,738$168,490,000thousands by filing date
STERIS PLCG84720104SHS USD2,391,501$166,114,000thousands by filing date
Alphabet Inc. Reg. Shares C02079K107COM199,329$165,355,000thousands by filing date
Salesforce.com, Inc79466L302COM1,910,607$157,606,000thousands by filing date
NEWELL BRANDS INC COM651229106Stock3,107,171$146,565,000thousands by filing date
AMETEK INC COM031100100Stock2,670,710$144,432,000thousands by filing date
Walt Disney Co254687106COM1,261,897$143,087,000thousands by filing date
Dow Chemical Company260543103COM2,174,787$138,186,000thousands by filing date
CONSTELLATION BRANDS INC CL A21036P108Stock819,134$132,757,000thousands by filing date
UnitedHealth Group Inc91324P102COM775,335$127,163,000thousands by filing date
VAIL RESORTS INC COM91879Q109Stock632,930$121,459,000thousands by filing date
ServiceNow,Inc.81762P102COM1,370,574$119,884,000thousands by filing date
McDonalds Corporation580135101COM896,992$116,259,000thousands by filing date
CHARTER COMMUNICATIONS INC N16119P108COM351,558$115,072,000thousands by filing date
Abbott Laboratories002824100COM2,578,881$114,528,000thousands by filing date
METTLER TOLEDO INTERNATIONAL COM592688105Stock233,664$111,904,000thousands by filing date
UNITED AIRLS HLDGS INC COM910047109Stock1,559,981$110,197,000thousands by filing date
Adobe Inc00724F101COM839,959$109,304,000thousands by filing date
Danaher Corporation235851102COM1,205,916$103,142,000thousands by filing date
Charles Schwab Corp808513105COM2,523,667$102,991,000thousands by filing date
United Parcel Service,Inc. Class B911312106COM941,891$101,065,000thousands by filing date
DELPHI AUTOMOTIVE PLCG27823106COMMON STOCK-FO1,244,543$100,173,000thousands by filing date
CELANESE CORP DEL COM150870103Stock1,098,611$98,710,000thousands by filing date
BIOGEN INC COM09062X103Stock359,107$98,187,000thousands by filing date
NEKTAR THERAPEUTICS640268108COM4,030,539$94,597,000thousands by filing date
BROADCOM LTDY09827109SHS430,427$94,246,000thousands by filing date
THE COOPER COMPANIES216648402COM NEW461,923$92,334,000thousands by filing date
CME Group Inc. Class A12572Q105COM770,348$91,517,000thousands by filing date
TWENTY FIRST CENTY FOX INC90130A101CL A2,750,026$89,073,000thousands by filing date
PAYPALHLDGSINC70450Y103STOK2,027,866$87,239,000thousands by filing date
S&P Global,Inc.78409V104COM666,502$87,138,000thousands by filing date
ICON PUB LTD CO SHSG4705A100Stock942,754$75,156,000thousands by filing date
NEXSTAR MEDIA GROUP INC COMMON STOCK65336K103Stock1,066,853$74,840,000thousands by filing date
Intercontinental Exchange,Inc.45866F104COM1,237,295$74,077,000thousands by filing date
Applied Materials,Inc.038222105COM1,897,319$73,806,000thousands by filing date
PACIRA BIOSCIENCES INC COM695127100Stock1,608,847$73,363,000thousands by filing date
MIDDLEBYCORP596278101STOK537,165$73,296,000thousands by filing date
GENERAL ELEC CO369604103COM2,454,221$73,136,000thousands by filing date
MasterCard, Inc57636Q104COM643,716$72,399,000thousands by filing date
TRANSDIGM GROUP INC COM893641100Stock325,439$71,649,000thousands by filing date
PRICELINE GRP INC741503403COM NEW38,840$69,134,000thousands by filing date
BERRY GLOBAL GROUP INC08579W103COM1,418,175$68,881,000thousands by filing date
TRANSUNION COM89400J107Stock1,795,092$68,842,000thousands by filing date
HILL ROM HLDGS INC431475102COM971,350$68,577,000thousands by filing date
LIONS GATE ENTMNT CORP535919500CL B NON VTG2,811,346$68,541,000thousands by filing date
HUNT J B TRANS SVCS INC COM445658107Stock732,503$67,200,000thousands by filing date
WRIGHT MED GROUP N VN96617118ORD SHS2,131,879$66,344,000thousands by filing date
INSTALLED BLDG PRODS INC45780R101COM1,249,756$65,925,000thousands by filing date
IHS MARKIT LTDG47567105SHS1,535,117$64,398,000thousands by filing date
ON SEMICONDUCTOR CORP COM682189105Stock4,148,230$64,256,000thousands by filing date
COSTAR GROUP INC COM22160N109Stock309,258$64,084,000thousands by filing date
HD SUPPLY HLDGS INC40416M105COM1,532,909$63,041,000thousands by filing date
Bristol-Myers Squibb Company110122108COM1,150,962$62,589,000thousands by filing date
Union Pacific Corporation907818108COM589,037$62,391,000thousands by filing date
SCRIPPS NETWORKS INTERACT IN811065101CL A COM790,510$61,952,000thousands by filing date
CIENA CORP COM NEW171779309Stock2,578,180$60,871,000thousands by filing date
TESORO CORP881609101COM740,032$59,987,000thousands by filing date
PINNACLE FOODS INC DEL72348P104COM1,035,779$59,941,000thousands by filing date
SIX FLAGS ENTERTAINMENT CORP83001A102COM980,622$58,337,000thousands by filing date
LENNOX INTL INC COM526107107Stock342,205$57,251,000thousands by filing date
CYRUSONE INC23283R100COM1,108,192$57,039,000thousands by filing date
GALLAGHER ARTHUR J & CO COM363576109Stock1,005,308$56,840,000thousands by filing date
COGNIZANT TECHNOLOGY SOLUTIONS CL A192446102Stock942,064$56,072,000thousands by filing date
RYDER SYS INC COM783549108Stock742,483$56,013,000thousands by filing date
NIKE,Inc. Class B654106103COM1,003,753$55,939,000thousands by filing date
DEXCOM INC COM252131107Stock652,341$55,273,000thousands by filing date
NIELSEN HOLDINGS PLCG6518L108SHS EUR1,337,947$55,271,000thousands by filing date
FORTINET INC COM34959E109Stock1,426,358$54,701,000thousands by filing date
RED HAT INC756577102COM632,286$54,693,000thousands by filing date
SEALED AIR CORP NEW81211K100COM1,196,755$52,155,000thousands by filing date
BREAD FINANCIAL HOLDINGS INC018581108COM209,407$52,142,000thousands by filing date
MSCI INC COM55354G100Stock533,829$51,883,000thousands by filing date
AVERY DENNISON CORP COM053611109Stock638,946$51,499,000thousands by filing date
NEUROCRINE BIOSCIENCES INC64125C109COM1,185,483$51,331,000thousands by filing date
AXALTA COATING SYS LTD COMG0750C108Stock1,585,375$51,049,000thousands by filing date
CAVIUM INC14964U108COM695,915$49,869,000thousands by filing date
LUMENTUM HLDGS INC COM55024U109Stock932,275$49,737,000thousands by filing date
SPLUNK INC848637104COM770,427$47,990,000thousands by filing date
MICROSEMI CORP595137100COM918,736$47,342,000thousands by filing date
TOTAL SYS SVCS INC891906109COM881,578$47,129,000thousands by filing date
QUEST DIAGNOSTICS INC COM74834L100Stock479,334$47,066,000thousands by filing date
JBT MAREL CORPORATION477839104COM512,802$45,101,000thousands by filing date
EAST WEST BANCORP INC COM27579R104Stock866,439$44,717,000thousands by filing date
KLX INC482539103COM989,110$44,213,000thousands by filing date
VANTIV INC92210H105CL A687,110$44,057,000thousands by filing date
ALEXION PHARMACEUTICALS INC015351109COM359,212$43,551,000thousands by filing date
BUILDERS FIRSTSOURCE INC COM12008R107Stock2,824,169$42,080,000thousands by filing date
Progressive Corporation743315103COM1,069,907$41,919,000thousands by filing date
VALERO ENERGY CORP COM91913Y100Stock629,966$41,760,000thousands by filing date
KELLANOVA487836108COM566,292$41,118,000thousands by filing date
NICE LTD SPONSORED ADR653656108ADR601,536$40,892,000thousands by filing date
MONSTER BEVERAGE CORP NEW COM61174X109Stock875,395$40,417,000thousands by filing date
PTC INC COM69370C100Stock757,046$39,783,000thousands by filing date
ALLEGIANT TRAVEL CO01748X102COM247,331$39,635,000thousands by filing date
FIRST REPUBLIC BANK/SAN FRANCI33616C100COM420,247$39,423,000thousands by filing date
RAYMOND JAMES FINL INC COM754730109Stock513,209$39,137,000thousands by filing date
WATSCO INC COM942622200Stock271,917$38,933,000thousands by filing date
Vertex Pharmaceuticals Incorporated92532F100COM355,880$38,915,000thousands by filing date
GRACE W R & CO DEL NEW COM38388F108Stock557,155$38,839,000thousands by filing date
MACQUARIE INFRASTRUCTURE HOLDI55608B105COMMON UNITS479,018$38,599,000thousands by filing date
ELECTRONICS FOR IMAGING INC286082102COM789,935$38,573,000thousands by filing date
BRIGHT HORIZONS FAM SOL IN DEL COM109194100Stock531,787$38,549,000thousands by filing date
STAG INDUSTRIAL INC85254J102COM1,526,473$38,192,000thousands by filing date
LKQ CORP COM501889208Stock1,295,485$37,919,000thousands by filing date
OMNICELL COM COM68213N109Stock925,244$37,611,000thousands by filing date
MASIMO CORP COM574795100Stock402,920$37,576,000thousands by filing date
CRANE CO224399105COM496,420$37,147,000thousands by filing date
SUMMIT MATERIALS INC CLASS A86614U100CL A1,418,683$35,056,000thousands by filing date
SMITH A O CORP COM831865209Stock662,162$33,876,000thousands by filing date
ZAYO GROUP HLDGS INC COM98919V105Stock1,026,260$33,764,000thousands by filing date
OLD DOMINION FREIGHT LINE INC COM679580100Stock394,052$33,719,000thousands by filing date
FCB Financial Holdings Inc Cla30255G103COM661,497$32,777,000thousands by filing date
BROADSOFT INC11133B409COM802,544$32,262,000thousands by filing date
FLOWSERVE CORP34354P105COM658,358$31,878,000thousands by filing date
DUNKIN BRANDS GROUP INC265504100COM581,064$31,773,000thousands by filing date
VIACOM INC92553P201CL B671,750$31,317,000thousands by filing date
SPIRIT AIRLS INC848577102COM585,955$31,097,000thousands by filing date
ACCELERON PHARMA INC00434H108COM1,147,919$30,385,000thousands by filing date
BAKER HUGHES INC057224107COM499,210$29,863,000thousands by filing date
ZENDESK INC98936J101COM1,031,640$28,927,000thousands by filing date
KATE SPADE & COMPANY485865109COMMON STOCK1,243,450$28,885,000thousands by filing date
ELDORADO RESORTS INC28470R102COM1,521,901$28,802,000thousands by filing date
INTEGRA LIFESCIENCES HLDGS C457985208COM NEW683,625$28,801,000thousands by filing date
OREILLY AUTOMOTIVE INC COM67103H107Stock105,256$28,402,000thousands by filing date
WESTERN REFNG INC959319104COM806,620$28,288,000thousands by filing date
ESSENT GROUP LTD COMG3198U102Stock762,310$27,573,000thousands by filing date
MADISON SQUARE GRDN SPRT CORP CL A55825T103Stock138,055$27,571,000thousands by filing date
DANA INC235825205COM1,427,106$27,557,000thousands by filing date
LIBERTY BROADBAND A530307107COMMON STOCK319,885$27,219,000thousands by filing date
VULCAN MATLS CO COM929160109Stock225,770$27,201,000thousands by filing date
MONOLITHIC PWR SYS INC COM609839105Stock292,031$26,896,000thousands by filing date
INTERXION HOLDING N.VN47279109SHS678,085$26,825,000thousands by filing date
BRUNSWICK CORP117043109COM434,226$26,575,000thousands by filing date
HEXCEL CORP NEW428291108COM477,010$26,021,000thousands by filing date
PROOFPOINT INC743424103COM341,034$25,359,000thousands by filing date
SOTHEBYS835898107COM534,965$24,330,000thousands by filing date
FIDELITY NATL INFORMATION SVCS COM31620M106Stock301,640$24,017,000thousands by filing date
CLOVIS ONCOLOGY INC189464100COM375,530$23,910,000thousands by filing date
ORBOTECH LTDM75253100ORD741,042$23,899,000thousands by filing date
REALPAGE INC75606N109COM683,878$23,867,000thousands by filing date
BMC STK HLDGS INC05591B109COM1,045,550$23,629,000thousands by filing date
UNIVAR INC91336L107COMMON STOCK762,059$23,365,000thousands by filing date
CYBERARK SOFTWARE LTD SHSM2682V108Stock459,190$23,359,000thousands by filing date
BIOVERATIV INC09075E100COM428,834$23,354,000thousands by filing date
BIOMARIN PHARMACEUTICAL INC09061G101COM264,005$23,174,000thousands by filing date
LIVE NATION ENTERTAINMENT INC COM538034109Stock762,480$23,157,000thousands by filing date
BANK OF N T BUTTERFIELD & SOG0772R208SHS NEW710,155$22,661,000thousands by filing date
AFFILIATED MANAGERS GROUP COM008252108Stock137,838$22,597,000thousands by filing date
GARTNERINC366651107STOK208,065$22,469,000thousands by filing date
THE ULTIMATE SOFTWARE GROUP IN90385D107COM114,666$22,384,000thousands by filing date
DAVE & BUSTERS ENTMT INC238337109COM365,153$22,307,000thousands by filing date
SUN CMNTYS INC COM866674104REIT277,469$22,289,000thousands by filing date
MGM RESORTS INTERNATIONAL552953101COM811,280$22,229,000thousands by filing date
ALKERMES PLCG01767105SHS373,170$21,830,000thousands by filing date
MGIC INVT CORP WIS COM552848103Stock2,134,600$21,623,000thousands by filing date
SVB FINANCIAL GROUP78486Q101COM115,560$21,505,000thousands by filing date
WNS HOLDINGS LTD92932M101SPON ADR738,180$21,119,000thousands by filing date
MARKETAXESS HLDGS INC57060D108COM111,446$20,895,000thousands by filing date
ACLARIS THERAPEUTICS INC COM00461U105Stock695,502$20,740,000thousands by filing date
ARRIS INTL INC SHSG0551A103SHS782,334$20,693,000thousands by filing date
MUELLER WTR PRODS INC COM SER A624758108Stock1,745,582$20,633,000thousands by filing date
WESTERN ALLIANCE BANCORP COM957638109Stock418,760$20,557,000thousands by filing date
RUSH ENTERPRISES INC CL A781846209Stock610,826$20,206,000thousands by filing date
TABLEAU SOFTWARE INC87336U105CL A404,484$20,042,000thousands by filing date
PVH CORPORATION COM693656100Stock192,290$19,896,000thousands by filing date
HAIN CELESTIAL GROUP INC405217100COM534,171$19,871,000thousands by filing date
NORD ANGLIA EDUCATION INCG6583A102SHS772,295$19,570,000thousands by filing date
COMMVAULT SYS INC COM204166102Stock380,069$19,308,000thousands by filing date
ACUSHNET HLDGS CORP005098108COM1,094,890$18,920,000thousands by filing date
COLUMBIA PROPERTY TRUST INC198287203COM NEW845,920$18,822,000thousands by filing date
CYPRESS SEMICONDUCTOR CORP232806109COM1,367,790$18,821,000thousands by filing date
ULTA BEAUTY INC COM90384S303Stock64,566$18,416,000thousands by filing date
CROWN CASTLE INC COM22822V101REIT194,183$18,341,000thousands by filing date
NATIONAL STORAGE AFFILIATES TR COM SHS BEN IN637870106REIT747,577$17,867,000thousands by filing date
EXPEDIA GROUP INC COM NEW30212P303Stock140,840$17,770,000thousands by filing date
PACIFIC PREMIER BANCORP INC69478X105COM458,532$17,676,000thousands by filing date
LIFE STORAGE INC53223X107COM214,188$17,589,000thousands by filing date
SENIOR HSG PPTYS TR81721M109SH BEN INT845,150$17,114,000thousands by filing date
ISLE OF CAPRI CASINOS464592104COMMON STOCK643,389$16,960,000thousands by filing date
AUTONATION INC COM05329W102Stock399,045$16,876,000thousands by filing date
TE CONNECTIVITY LTDH84989104SHS224,140$16,710,000thousands by filing date
KNOLL INC498904200COM NEW697,620$16,610,000thousands by filing date
Micron Technology,Inc.595112103COM562,270$16,250,000thousands by filing date
PALO ALTO NETWORKS INC697435105COM138,569$15,614,000thousands by filing date
LITHIA MTRS INC COM536797103Stock177,758$15,225,000thousands by filing date
CARDIOME PHARMA CORP14159U301COM NO PAR4,894,948$14,734,000thousands by filing date
LAM RESEARCH CORP512807108COM114,635$14,715,000thousands by filing date
CHUY'S HOLDINGS INC171604101COMMON STOCK481,709$14,355,000thousands by filing date
MATSON INC COM57686G105Stock441,500$14,022,000thousands by filing date
Comcast Corp20030N101COM368,440$13,850,000thousands by filing date
INTEGRATED DEVICE TECHNOLOGY INC458118106COMMON STOCK568,505$13,457,000thousands by filing date
PROTHENA CORP PLC SHSG72800108Stock239,194$13,345,000thousands by filing date
GENESCO INC371532102COM224,802$12,465,000thousands by filing date
NXP SEMICONDUCTORS N V COMN6596X109Stock119,066$12,323,000thousands by filing date
MARTEN TRANSPORT LTD573075108COM506,089$11,868,000thousands by filing date
EURONET WORLDWIDE INC COM298736109Stock128,060$10,952,000thousands by filing date
COMMUNITY USD0.0120369C106COM455,027$10,875,000thousands by filing date
IROBOT CORP462726100COM161,338$10,671,000thousands by filing date
LULULEMON ATHLETICA INC550021109COM200,720$10,411,000thousands by filing date
IPG PHOTONICS CORP44980X109COM81,165$9,797,000thousands by filing date
MEDICINES CO584688105COM194,000$9,487,000thousands by filing date
FOUR CORNERS PPTY TR INC35086T109COM413,420$9,438,000thousands by filing date
Cisco Systems,Inc.17275R102COM267,695$9,048,000thousands by filing date
TESARO INC881569107COM55,263$8,503,000thousands by filing date
HENRY JACK & ASSOC INC426281101COM90,379$8,414,000thousands by filing date
ALDER BIOPHARMACEUTICALS INC014339105COM397,350$8,265,000thousands by filing date
ACADIA PHARMACEUTICALS INC004225108COM238,694$8,206,000thousands by filing date
JPMorgan Chase & Co46625H100COM91,740$8,058,000thousands by filing date
LA JOLLA PHARMACEUTICAL CO503459604COM PAR $.0001 2268,290$8,008,000thousands by filing date
Verizon Communications Inc92343V104COM163,885$7,989,000thousands by filing date
BEST BUY INC COM086516101Stock146,965$7,223,000thousands by filing date
SEATTLE GENETICS INC812578102COM112,260$7,057,000thousands by filing date
NATURAL GROCERS BY VITAMIN C63888U108COMMON STOCK650,855$6,762,000thousands by filing date
WESTERN DIGITAL CORP958102105COM75,930$6,267,000thousands by filing date
CNO FINL GROUP INC12621E103COM282,995$5,801,000thousands by filing date
PENSKE AUTOMOTIVE GRP INC COM70959W103Stock123,705$5,791,000thousands by filing date
Merck & Co.,Inc.58933Y105COM90,534$5,753,000thousands by filing date
Intel Corp458140100COM158,657$5,723,000thousands by filing date
KIMBERLY-CLARK CORP COM494368103Stock41,277$5,433,000thousands by filing date
MOTOROLA SOLUTIONS INC COM NEW620076307Stock62,130$5,357,000thousands by filing date
LYONDELLBASELL INDUSTRIES NV SHS - A -N53745100Stock55,080$5,023,000thousands by filing date
Thermo Fisher Scientific Inc.883556102COM30,671$4,711,000thousands by filing date
ORION S.A.L72967109COM217,665$4,462,000thousands by filing date
MICROCHIP TECHNOLOGY INC. COM595017104Stock56,955$4,202,000thousands by filing date
Lockheed Martin Corporation539830109COM13,718$3,671,000thousands by filing date
INTERNATIONAL PAPER CO COM460146103Stock64,065$3,253,000thousands by filing date
Gilead Sciences,Inc.375558103COM45,465$3,088,000thousands by filing date
BAXTER INTL INC071813109COM40,745$2,113,000thousands by filing date
Chubb LimitedH1467J104COM15,140$2,063,000thousands by filing date
INPHI CORP45772F107COM36,930$1,803,000thousands by filing date
MULTI-COLOR625383104COM20,641$1,466,000thousands by filing date
CHEMTURA CORP163893209COM NEW42,730$1,427,000thousands by filing date
MACOM TECH SOLUTIONS HLDGS INC COM55405Y100Stock27,010$1,305,000thousands by filing date
WASTE CONNECTIONS INC COM94106B101Stock14,625$1,290,000thousands by filing date
KIRBY CORP497266106COM16,590$1,170,000thousands by filing date
SABRE CORP COM78573M104Stock44,940$952,000thousands by filing date
LIONS GATE ENTMNT CORP535919401CL A VTG27,795$738,000thousands by filing date
CSX Corporation126408103COM15,000$698,000thousands by filing date
Schlumberger Limited806857108COM8,424$658,000thousands by filing date
SPDR GOLD TR78463V107GOLD SHS4,200$499,000thousands by filing date
PRA HEALTH SCIENCES INC69354M108COM6,900$450,000thousands by filing date
PARAGON COML CORP COM NEW69911U403Stock6,900$369,000thousands by filing date
International Business Machines Corporation459200101COM2,000$348,000thousands by filing date
Netflix, Inc64110L106COM2,300$340,000thousands by filing date
FREEPORT MCMORAN INC CL B35671D857Stock25,000$334,000thousands by filing date
AGILENT TECHNOLOGIES INC COM00846U101Stock6,300$333,000thousands by filing date
VENTAS INC COM92276F100REIT4,719$307,000thousands by filing date
STATE STR CORP COM857477103Stock3,840$306,000thousands by filing date
CONTRAFECT CORP212326102COM149,600$269,000thousands by filing date
HUDSON TECHNOLOGIES INC444144109COMMON STOCK40,000$264,000thousands by filing date

Amendment chain

FilingRoleFiledAcceptedIngested
13F-HR 0001085146-17-001209this filing2017-05-12acceptance time not in the bulk data set