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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 2017-12-31, filed 2018-02-13, with 244 holding rows worth $13,090,103,000.

Accession
0001085146-18-000615
Filed
2018-02-13
Accepted by EDGAR
acceptance time not in the bulk data set
Ingested
Source
SEC quarterly data set

Original filing

13F report for Q4 2017

A holdings report, 244 entries on the cover page, a total value of $13,090,103,000 stated on the cover page (in dollars after the unit check, H1), rows summing to $13,090,103,000 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 Inc037833100COM1,984,127$335,774,000thousands by filing date
Amazon.com, Inc023135106COM225,973$264,269,000thousands by filing date
META PLATFORMS INC CL A30303M102COM1,485,568$262,143,000thousands by filing date
Microsoft Corp594918104COM2,608,095$223,096,000thousands by filing date
MARRIOTT INTL INC NEW CL A571903202Stock1,552,611$210,736,000thousands by filing date
Alphabet Inc. Reg. Shares C02079K107COM185,876$194,501,000thousands by filing date
Visa Inc92826C839COM1,681,568$191,732,000thousands by filing date
AMETEK INC COM031100100Stock2,582,132$187,127,000thousands by filing date
CONSTELLATION BRANDS INC CL A21036P108Stock786,224$179,707,000thousands by filing date
Alphabet Inc. Reg. Shares A02079K305COM164,458$173,240,000thousands by filing date
JAZZ PHARMACEUTICALS PLC SHS USDG50871105Stock1,230,572$165,697,000thousands by filing date
Home Depot, Inc437076102COM867,689$164,453,000thousands by filing date
STERIS PLCG84720104SHS USD1,691,533$147,958,000thousands by filing date
NEKTAR THERAPEUTICS640268108COM2,293,181$136,949,000thousands by filing date
Progressive Corporation743315103COM2,345,303$132,087,000thousands by filing date
Salesforce.com, Inc79466L302COM1,290,782$131,957,000thousands by filing date
ServiceNow,Inc.81762P102COM1,009,752$131,662,000thousands by filing date
THE COOPER COMPANIES216648402COM NEW592,956$129,193,000thousands by filing date
DOWDUPONT INC26078J100COM1,804,224$128,497,000thousands by filing date
INGERSOLL-RAND PLCG47791101SHS1,421,329$126,768,000thousands by filing date
Union Pacific Corporation907818108COM938,694$125,879,000thousands by filing date
Philip Morris International Inc.718172109COM1,172,889$123,916,000thousands by filing date
Boeing Company097023105COM405,271$119,518,000thousands by filing date
CELGENE CORP151020104COM1,113,579$116,213,000thousands by filing date
Adobe Inc00724F101COM656,298$115,010,000thousands by filing date
American Tower Corporation03027X100COM792,778$113,106,000thousands by filing date
BROADCOM LTDY09827109SHS435,262$111,819,000thousands by filing date
Bank of America Corp060505104COM3,755,716$110,869,000thousands by filing date
CELANESE CORP DEL COM150870103Stock1,019,224$109,139,000thousands by filing date
UNITED AIRLS HLDGS INC COM910047109Stock1,540,582$103,835,000thousands by filing date
SUMMIT MATERIALS INC CLASS A86614U100CL A3,256,164$102,374,000thousands by filing date
LENNOX INTL INC COM526107107Stock485,085$101,024,000thousands by filing date
Abbott Laboratories002824100COM1,761,047$100,503,000thousands by filing date
MGM RESORTS INTERNATIONAL552953101COM3,001,043$100,205,000thousands by filing date
BIOGEN INC COM09062X103Stock311,849$99,346,000thousands by filing date
ILLINOIS TOOL WKS INC452308109COM590,617$98,544,000thousands by filing date
AVERY DENNISON CORP COM053611109Stock840,881$96,584,000thousands by filing date
HUNT J B TRANS SVCS INC COM445658107Stock825,915$94,964,000thousands by filing date
ICON PUB LTD CO SHSG4705A100Stock844,053$94,661,000thousands by filing date
Vertex Pharmaceuticals Incorporated92532F100COM618,861$92,743,000thousands by filing date
Verizon Communications Inc92343V104COM1,716,047$90,830,000thousands by filing date
Intercontinental Exchange,Inc.45866F104COM1,280,339$90,341,000thousands by filing date
EOG RES INC COM26875P101Stock831,953$89,776,000thousands by filing date
Eli Lilly and Company532457108COM1,032,851$87,235,000thousands by filing date
MasterCard, Inc57636Q104COM575,811$87,155,000thousands by filing date
METTLER TOLEDO INTERNATIONAL COM592688105Stock139,379$86,348,000thousands by filing date
COSTAR GROUP INC COM22160N109Stock288,603$85,701,000thousands by filing date
PAYPALHLDGSINC70450Y103STOK1,158,036$85,255,000thousands by filing date
ANDEAVOR03349M105COM731,255$83,612,000thousands by filing date
PINNACLE FOODS INC DEL72348P104COM1,350,770$80,330,000thousands by filing date
MEDICINES CO584688105COM2,904,475$79,408,000thousands by filing date
S&P Global,Inc.78409V104COM465,831$78,912,000thousands by filing date
MICROSEMI CORP595137100COM1,527,620$78,902,000thousands by filing date
ALEXANDRIA REAL ESTATE EQ INC COM015271109REIT594,234$77,601,000thousands by filing date
GALLAGHER ARTHUR J & CO COM363576109Stock1,221,228$77,279,000thousands by filing date
KLX INC482539103COM1,061,850$72,471,000thousands by filing date
TELEDYNE TECHNOLOGIES INC COM879360105Stock399,290$72,331,000thousands by filing date
Applied Materials,Inc.038222105COM1,401,759$71,658,000thousands by filing date
CYRUSONE INC23283R100COM1,202,818$71,604,000thousands by filing date
Danaher Corporation235851102COM769,580$71,432,000thousands by filing date
LIONS GATE ENTMNT CORP535919500CL B NON VTG2,214,496$70,288,000thousands by filing date
VANTIV INC92210H105CL A941,697$69,262,000thousands by filing date
BERRY GLOBAL GROUP INC08579W103COM1,172,676$68,801,000thousands by filing date
BREAD FINANCIAL HOLDINGS INC018581108COM264,954$67,161,000thousands by filing date
FLEETCOR TECHNOLOGIES INC339041105COM348,734$67,107,000thousands by filing date
APTIV PLCG6095L109SHS788,385$66,879,000thousands by filing date
COGNIZANT TECHNOLOGY SOLUTIONS CL A192446102Stock932,421$66,221,000thousands by filing date
RSP PERMIAN INC74978Q105COM1,624,775$66,096,000thousands by filing date
TRANSDIGM GROUP INC COM893641100Stock239,765$65,844,000thousands by filing date
TRANSUNION COM89400J107Stock1,195,790$65,721,000thousands by filing date
ESSENT GROUP LTD COMG3198U102Stock1,508,755$65,510,000thousands by filing date
ACCELERON PHARMA INC00434H108COM1,510,868$64,121,000thousands by filing date
FORTINET INC COM34959E109Stock1,459,683$63,774,000thousands by filing date
TOTAL SYS SVCS INC891906109COM799,055$63,197,000thousands by filing date
MONSTER BEVERAGE CORP NEW COM61174X109Stock996,286$63,055,000thousands by filing date
UNIVAR INC91336L107COMMON STOCK2,031,029$62,881,000thousands by filing date
RED HAT INC756577102COM519,329$62,371,000thousands by filing date
MSCI INC COM55354G100Stock485,284$61,408,000thousands by filing date
INSTALLED BLDG PRODS INC45780R101COM806,103$61,224,000thousands by filing date
PRICELINE GRP INC741503403COM NEW35,147$61,076,000thousands by filing date
Micron Technology,Inc.595112103COM1,484,843$61,057,000thousands by filing date
NICE LTD SPONSORED ADR653656108ADR658,062$60,482,000thousands by filing date
WEX INC96208T104COM425,483$60,091,000thousands by filing date
RYDER SYS INC COM783549108Stock706,809$59,492,000thousands by filing date
SPLUNK INC848637104COM713,693$59,122,000thousands by filing date
INTEGRA LIFESCIENCES HLDGS C457985208COM NEW1,215,386$58,168,000thousands by filing date
AXALTA COATING SYS LTD COMG0750C108Stock1,790,975$57,956,000thousands by filing date
JBT MAREL CORPORATION477839104COM513,501$56,896,000thousands by filing date
PACIRA BIOSCIENCES INC COM695127100Stock1,245,923$56,876,000thousands by filing date
WRIGHT MED GROUP N VN96617118ORD SHS2,561,329$56,862,000thousands by filing date
LAM RESEARCH CORP512807108COM306,286$56,378,000thousands by filing date
ORBOTECH LTDM75253100ORD1,110,507$55,792,000thousands by filing date
NEXSTAR MEDIA GROUP INC COMMON STOCK65336K103Stock710,247$55,541,000thousands by filing date
BUILDERS FIRSTSOURCE INC COM12008R107Stock2,544,249$55,439,000thousands by filing date
ARAMARK COM03852U106Stock1,274,880$54,488,000thousands by filing date
VAIL RESORTS INC COM91879Q109Stock255,004$54,181,000thousands by filing date
EQUINIX INC COM29444U700REIT117,663$53,327,000thousands by filing date
WESTERN ALLIANCE BANCORP COM957638109Stock939,045$53,169,000thousands by filing date
VALERO ENERGY CORP COM91913Y100Stock568,433$52,245,000thousands by filing date
SIX FLAGS ENTERTAINMENT CORP83001A102COM775,915$51,653,000thousands by filing date
FIDELITY NATL INFORMATION SVCS COM31620M106Stock548,740$51,631,000thousands by filing date
DELPHI TECHNOLOGIES PLCG2709G107SHS963,601$50,560,000thousands by filing date
FLOWSERVE CORP34354P105COM1,196,604$50,413,000thousands by filing date
INTERXION HOLDING N.VN47279109SHS843,116$49,685,000thousands by filing date
CYPRESS SEMICONDUCTOR CORP232806109COM3,129,154$47,688,000thousands by filing date
BIOVERATIV INC09075E100COM864,275$46,602,000thousands by filing date
PIONEER NATURAL RESOURCES CO723787107COM264,160$45,660,000thousands by filing date
IHS MARKIT LTDG47567105SHS1,009,740$45,590,000thousands by filing date
AVEXIS INC05366U100COM401,350$44,417,000thousands by filing date
BANK OF N T BUTTERFIELD & SOG0772R208SHS NEW1,209,895$43,907,000thousands by filing date
ELDORADO RESORTS INC28470R102COM1,319,429$43,739,000thousands by filing date
DOLLAR TREE INC COM256746108Stock407,337$43,711,000thousands by filing date
BOYDGAMINGCORP103304101STOK1,246,860$43,702,000thousands by filing date
INPHI CORP45772F107COM1,174,000$42,968,000thousands by filing date
GARTNERINC366651107STOK346,500$42,671,000thousands by filing date
BMC STK HLDGS INC05591B109COM1,666,181$42,154,000thousands by filing date
SUN CMNTYS INC COM866674104REIT449,219$41,679,000thousands by filing date
MASIMO CORP COM574795100Stock488,468$41,422,000thousands by filing date
CIENA CORP COM NEW171779309Stock1,965,285$41,133,000thousands by filing date
E TRADE FINANCIAL CORP269246401COM NEW822,580$40,775,000thousands by filing date
MASTEC INC COM576323109Stock831,675$40,710,000thousands by filing date
AUTODESK INC COM052769106Stock387,194$40,590,000thousands by filing date
MACQUARIE INFRASTRUCTURE HOLDI55608B105COMMON UNITS629,778$40,432,000thousands by filing date
REALPAGE INC75606N109COM910,688$40,343,000thousands by filing date
DIAMONDBACK ENERGY INC COM25278X109Stock318,545$40,216,000thousands by filing date
CRANE CO224399105COM445,465$39,744,000thousands by filing date
GRACE W R & CO DEL NEW COM38388F108Stock566,055$39,697,000thousands by filing date
QUEST DIAGNOSTICS INC COM74834L100Stock401,476$39,541,000thousands by filing date
OLD DOMINION FREIGHT LINE INC COM679580100Stock298,802$39,307,000thousands by filing date
RUSH ENTERPRISES INC CL A781846209Stock768,436$39,044,000thousands by filing date
MILACRON HLDGS CORP59870L106COM2,021,550$38,692,000thousands by filing date
PROOFPOINT INC743424103COM433,055$38,460,000thousands by filing date
BURLINGTON STORES INC COM122017106Stock305,365$37,569,000thousands by filing date
NCR VOYIX CORPORATION62886E108COM1,097,763$37,313,000thousands by filing date
HILL ROM HLDGS INC431475102COM436,035$36,753,000thousands by filing date
VULCAN MATLS CO COM929160109Stock284,886$36,571,000thousands by filing date
SMITH A O CORP COM831865209Stock593,352$36,361,000thousands by filing date
FLIR SYS INC302445101COM768,940$35,848,000thousands by filing date
BIO RAD LABS INC090572207CL A149,043$35,572,000thousands by filing date
RAYMOND JAMES FINL INC COM754730109Stock393,379$35,129,000thousands by filing date
TOPBUILD COR COM89055F103Stock459,125$34,774,000thousands by filing date
ZENDESK INC98936J101COM1,023,575$34,638,000thousands by filing date
MICROCHIP TECHNOLOGY INC. COM595017104Stock393,970$34,622,000thousands by filing date
CLOVIS ONCOLOGY INC189464100COM505,555$34,378,000thousands by filing date
TRINSEO S AL9340P101SHS471,345$34,220,000thousands by filing date
PVH CORPORATION COM693656100Stock244,481$33,545,000thousands by filing date
L BRANDS INC501797104COM547,603$32,977,000thousands by filing date
OMNICELL COM COM68213N109Stock677,682$32,868,000thousands by filing date
ENVISION HEALTHCARE CORP29414D100COM947,115$32,732,000thousands by filing date
CANTEL MEDICAL CORP138098108COM317,473$32,658,000thousands by filing date
BLACK KNIGHT INC COM09215C105Stock735,810$32,486,000thousands by filing date
ON SEMICONDUCTOR CORP COM682189105Stock1,511,735$31,656,000thousands by filing date
EXPEDIA GROUP INC COM NEW30212P303Stock263,979$31,617,000thousands by filing date
MADISON SQUARE GRDN SPRT CORP CL A55825T103Stock149,849$31,596,000thousands by filing date
EAST WEST BANCORP INC COM27579R104Stock516,065$31,392,000thousands by filing date
ZAYO GROUP HLDGS INC COM98919V105Stock845,521$31,115,000thousands by filing date
FULLER H B CO COM359694106Stock566,410$30,513,000thousands by filing date
THE ULTIMATE SOFTWARE GROUP IN90385D107COM137,504$30,007,000thousands by filing date
COHERENT INC192479103COM105,867$29,878,000thousands by filing date
ROBERT HALF INC. COM770323103Stock530,770$29,479,000thousands by filing date
DANA INC235825205COM912,126$29,197,000thousands by filing date
TABLEAU SOFTWARE INC87336U105CL A408,730$28,284,000thousands by filing date
BRIGHT HORIZONS FAM SOL IN DEL COM109194100Stock299,661$28,168,000thousands by filing date
WNS HOLDINGS LTD92932M101SPON ADR693,525$27,831,000thousands by filing date
WAGEWORKS INC930427109COM445,580$27,626,000thousands by filing date
CAVIUM INC14964U108COM323,925$27,155,000thousands by filing date
NEW RELIC INC64829B100COMMON STOCK448,466$25,908,000thousands by filing date
MGIC INVT CORP WIS COM552848103Stock1,826,136$25,767,000thousands by filing date
PROTHENA CORP PLC SHSG72800108Stock680,659$25,518,000thousands by filing date
COMMVAULT SYS INC COM204166102Stock480,269$25,214,000thousands by filing date
PINNACLE FINANCIAL PARTNERS IN72346Q104COM378,515$25,096,000thousands by filing date
CAMDEN PPTY TR SH BEN INT133131102REIT272,520$25,088,000thousands by filing date
PACIFIC PREMIER BANCORP INC69478X105COM621,867$24,875,000thousands by filing date
MERCURY SYS INC COM589378108Stock482,915$24,798,000thousands by filing date
INTEGRATED DEVICE TECHNOLOGY INC458118106COMMON STOCK833,100$24,768,000thousands by filing date
SOTHEBYS835898107COM473,579$24,437,000thousands by filing date
BIOMARIN PHARMACEUTICAL INC09061G101COM264,630$23,597,000thousands by filing date
PTC INC COM69370C100Stock377,771$22,957,000thousands by filing date
WATSCO INC COM942622200Stock134,485$22,868,000thousands by filing date
BOTTOMLINE TECH INC DEL101388106COM638,837$22,155,000thousands by filing date
LUMENTUM HLDGS INC COM55024U109Stock449,866$21,998,000thousands by filing date
PALO ALTO NETWORKS INC697435105COM150,165$21,765,000thousands by filing date
IDEXX LABS INC COM45168D104Stock138,848$21,713,000thousands by filing date
SLM CORP COM78442P106Stock1,894,195$21,404,000thousands by filing date
KAPSTONE PAPER AND PACKAGING C48562P103COM900,095$20,423,000thousands by filing date
ACLARIS THERAPEUTICS INC COM00461U105Stock800,369$19,737,000thousands by filing date
MONOLITHIC PWR SYS INC COM609839105Stock169,342$19,027,000thousands by filing date
COMMSCOPE HLDG CO INC20337X109COM494,950$18,724,000thousands by filing date
BROADSOFT INC11133B409COM332,343$18,246,000thousands by filing date
NATIONAL VISION HLDGS INC COM63845R107Stock401,500$16,305,000thousands by filing date
LITHIA MTRS INC COM536797103Stock137,809$15,654,000thousands by filing date
SANTANDER CONSUMER USA HOLDINGS80283M101COMMON STOCK808,630$15,057,000thousands by filing date
CHEGG INC163092109COM850,380$13,878,000thousands by filing date
SKYWORKS SOLUTIONS INC COM83088M102Stock139,725$13,267,000thousands by filing date
RESOLUTE ENERGY CORP76116A306COM NEW415,220$13,067,000thousands by filing date
MATSON INC COM57686G105Stock420,683$12,553,000thousands by filing date
ULTRA CLEAN HLDGS INC COM90385V107Stock494,075$11,408,000thousands by filing date
NEWELL BRANDS INC COM651229106Stock349,293$10,793,000thousands by filing date
NOVOCURE LTDG6674U108ORD SHS510,800$10,318,000thousands by filing date
CME Group Inc. Class A12572Q105COM69,600$10,165,000thousands by filing date
Walmart Inc.931142103COM82,895$8,186,000thousands by filing date
Texas Instruments Incorporated882508104COM76,830$8,024,000thousands by filing date
Cisco Systems,Inc.17275R102COM201,755$7,727,000thousands by filing date
CARDIOME PHARMA CORP14159U301COM NO PAR4,678,364$7,251,000thousands by filing date
OCCIDENTAL PETE CORP674599105COM97,245$7,163,000thousands by filing date
CONAGRA FOODS INC205887102COM179,145$6,748,000thousands by filing date
Caterpillar Inc.149123101COM42,110$6,636,000thousands by filing date
CITIZENS FINL GROUP INC COM174610105Stock157,870$6,627,000thousands by filing date
Advanced Micro Devices,Inc.007903107COM621,915$6,393,000thousands by filing date
ROYAL CARIBBEAN GROUP COMV7780T103Stock52,675$6,283,000thousands by filing date
ISHARES RUSSELL MID-CAP GROWTH ETF464287481ETF50,350$6,074,000thousands by filing date
JPMorgan Chase & Co46625H100COM55,295$5,913,000thousands by filing date
HENRY JACK & ASSOC INC426281101COM50,439$5,899,000thousands by filing date
Thermo Fisher Scientific Inc.883556102COM30,211$5,736,000thousands by filing date
CUMMINS INC COM231021106Stock32,310$5,707,000thousands by filing date
KIMBERLY-CLARK CORP COM494368103Stock39,802$4,803,000thousands by filing date
FINANCIAL ENGINES INC317485100COM157,635$4,776,000thousands by filing date
Honeywell Technologies438516106COM28,395$4,355,000thousands by filing date
Lockheed Martin Corporation539830109COM13,468$4,324,000thousands by filing date
NextEra Energy,Inc.65339F101COM24,880$3,886,000thousands by filing date
CHARTER COMMUNICATIONS INC N16119P108COM7,959$2,674,000thousands by filing date
LIVE NATION ENTERTAINMENT INC COM538034109Stock47,350$2,016,000thousands by filing date
MARTEN TRANSPORT LTD573075108COM98,566$2,001,000thousands by filing date
STAG INDUSTRIAL INC85254J102COM64,550$1,764,000thousands by filing date
ALPS ETF TR00162Q866ALERIAN MLP98,700$1,065,000thousands by filing date
WASTE CONNECTIONS INC COM94106B101Stock13,686$971,000thousands by filing date
LIONS GATE ENTMNT CORP535919401CL A VTG27,795$940,000thousands by filing date
CSX Corporation126408103COM15,000$825,000thousands by filing date
Merck & Co.,Inc.58933Y105COM12,159$684,000thousands by filing date
PRA HEALTH SCIENCES INC69354M108COM6,900$628,000thousands by filing date
FCB Financial Holdings Inc Cla30255G103COM11,640$591,000thousands by filing date
SPDR SERIES TRUST78464A698ST STR SP REGBNK8,900$524,000thousands by filing date
SBA COMMUNICATIONS CORP CL A78410G104REIT3,100$506,000thousands by filing date
ZYNGA INC.98986T108CL A113,700$455,000thousands by filing date
ACTVISION BLIZZARD INC00507V109COM7,000$443,000thousands by filing date
GRUBHUB INC400110102COM5,800$416,000thousands by filing date
WEST PHARMACEUTICAL SVSC INC COM955306105Stock3,700$365,000thousands by filing date
Schlumberger Limited806857108COM4,824$325,000thousands by filing date
International Business Machines Corporation459200101COM2,000$307,000thousands by filing date
VENTAS INC COM92276F100REIT4,719$283,000thousands by filing date
NATURAL GROCERS BY VITAMIN C63888U108COMMON STOCK30,000$268,000thousands by filing date
TWITTER INC90184L102COM8,900$214,000thousands by filing date
ARCOS DORADOS HLDGS INCG0457F107SHS CLASS -A -10,370$107,000thousands by filing date
AU OPTRONICS CORP002255107SPONSORED ADR16,900$70,000thousands by filing date

Amendment chain

FilingRoleFiledAcceptedIngested
13F-HR 0001085146-18-000615this filing2018-02-13acceptance time not in the bulk data set