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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 2017-09-30, filed 2017-11-13, with 251 holding rows worth $13,019,115,000.

Accession
0001085146-17-002296
Filed
2017-11-13
Accepted by EDGAR
acceptance time not in the bulk data set
Ingested
Source
SEC quarterly data set

Original filing

13F report for Q3 2017

A holdings report, 251 entries on the cover page, a total value of $13,019,115,000 stated on the cover page (in dollars after the unit check, H1), rows summing to $13,019,115,000 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 Inc037833100COM2,114,798$325,933,000thousands by filing date
META PLATFORMS INC CL A30303M102COM1,628,311$278,230,000thousands by filing date
Amazon.com, Inc023135106COM228,702$219,863,000thousands by filing date
Microsoft Corp594918104COM2,882,782$214,738,000thousands by filing date
JAZZ PHARMACEUTICALS PLC SHS USDG50871105Stock1,438,481$210,378,000thousands by filing date
CELGENE CORP151020104COM1,362,424$198,669,000thousands by filing date
Visa Inc92826C839COM1,832,202$192,821,000thousands by filing date
AMETEK INC COM031100100Stock2,843,212$187,766,000thousands by filing date
Alphabet Inc. Reg. Shares C02079K107COM193,988$186,056,000thousands by filing date
MARRIOTT INTL INC NEW CL A571903202Stock1,681,372$185,388,000thousands by filing date
Alphabet Inc. Reg. Shares A02079K305COM182,402$177,608,000thousands by filing date
CONSTELLATION BRANDS INC CL A21036P108Stock857,830$171,094,000thousands by filing date
STERIS PLCG84720104SHS USD1,840,853$162,731,000thousands by filing date
Home Depot, Inc437076102COM966,191$158,030,000thousands by filing date
THE COOPER COMPANIES216648402COM NEW636,882$151,011,000thousands by filing date
UnitedHealth Group Inc91324P102COM708,357$138,732,000thousands by filing date
Salesforce.com, Inc79466L302COM1,482,626$138,507,000thousands by filing date
DOWDUPONT INC26078J100COM1,995,120$138,122,000thousands by filing date
INGERSOLL-RAND PLCG47791101SHS1,520,393$135,573,000thousands by filing date
ServiceNow,Inc.81762P102COM1,085,501$127,579,000thousands by filing date
Abbott Laboratories002824100COM2,326,895$124,163,000thousands by filing date
Philip Morris International Inc.718172109COM1,116,017$123,889,000thousands by filing date
Eli Lilly and Company532457108COM1,406,513$120,313,000thousands by filing date
Progressive Corporation743315103COM2,351,156$113,843,000thousands by filing date
CELANESE CORP DEL COM150870103Stock1,048,124$109,288,000thousands by filing date
Adobe Inc00724F101COM729,727$108,861,000thousands by filing date
SUMMIT MATERIALS INC CLASS A86614U100CL A3,344,408$107,121,000thousands by filing date
UNITED AIRLS HLDGS INC COM910047109Stock1,738,886$105,863,000thousands by filing date
ALEXANDRIA REAL ESTATE EQ INC COM015271109REIT888,435$105,697,000thousands by filing date
CHARTER COMMUNICATIONS INC N16119P108COM290,027$105,402,000thousands by filing date
METTLER TOLEDO INTERNATIONAL COM592688105Stock165,344$103,532,000thousands by filing date
Union Pacific Corporation907818108COM880,836$102,151,000thousands by filing date
Danaher Corporation235851102COM1,188,193$101,923,000thousands by filing date
DELPHI AUTOMOTIVE PLCG27823106COMMON STOCK-FO1,020,057$100,374,000thousands by filing date
NEWELL BRANDS INC COM651229106Stock2,336,397$99,694,000thousands by filing date
PAYPALHLDGSINC70450Y103STOK1,545,911$98,985,000thousands by filing date
ICON PUB LTD CO SHSG4705A100Stock869,018$98,964,000thousands by filing date
PRICELINE GRP INC741503403COM NEW51,239$93,809,000thousands by filing date
Intercontinental Exchange,Inc.45866F104COM1,362,753$93,621,000thousands by filing date
HUNT J B TRANS SVCS INC COM445658107Stock841,450$93,468,000thousands by filing date
MEDICINES CO584688105COM2,476,778$91,740,000thousands by filing date
MasterCard, Inc57636Q104COM647,678$91,452,000thousands by filing date
VAIL RESORTS INC COM91879Q109Stock398,794$90,973,000thousands by filing date
LIONS GATE ENTMNT CORP535919500CL B NON VTG2,822,998$89,743,000thousands by filing date
AVERY DENNISON CORP COM053611109Stock911,591$89,646,000thousands by filing date
Bank of America Corp060505104COM3,502,654$88,757,000thousands by filing date
LENNOX INTL INC COM526107107Stock495,122$88,612,000thousands by filing date
NEKTAR THERAPEUTICS640268108COM3,632,419$87,178,000thousands by filing date
Applied Materials,Inc.038222105COM1,659,403$86,438,000thousands by filing date
GALLAGHER ARTHUR J & CO COM363576109Stock1,349,368$83,054,000thousands by filing date
PINNACLE FOODS INC DEL72348P104COM1,438,368$82,231,000thousands by filing date
BROADCOM LTDY09827109SHS338,212$82,030,000thousands by filing date
S&P Global,Inc.78409V104COM519,991$81,280,000thousands by filing date
BIOGEN INC COM09062X103Stock257,692$80,689,000thousands by filing date
TRANSDIGM GROUP INC COM893641100Stock314,473$80,395,000thousands by filing date
COSTAR GROUP INC COM22160N109Stock296,272$79,475,000thousands by filing date
MICROSEMI CORP595137100COM1,538,840$79,219,000thousands by filing date
ANDEAVOR03349M105COM757,633$78,150,000thousands by filing date
CME Group Inc. Class A12572Q105COM565,472$76,723,000thousands by filing date
CYRUSONE INC23283R100COM1,227,328$72,326,000thousands by filing date
Micron Technology,Inc.595112103COM1,828,935$71,932,000thousands by filing date
COGNIZANT TECHNOLOGY SOLUTIONS CL A192446102Stock988,652$71,717,000thousands by filing date
RED HAT INC756577102COM638,382$70,771,000thousands by filing date
RYDER SYS INC COM783549108Stock830,603$70,227,000thousands by filing date
Verizon Communications Inc92343V104COM1,380,852$68,338,000thousands by filing date
TWENTY FIRST CENTY FOX INC90130A101CL A2,584,313$68,174,000thousands by filing date
Boeing Company097023105COM267,828$68,085,000thousands by filing date
WRIGHT MED GROUP N VN96617118ORD SHS2,619,914$67,777,000thousands by filing date
EOG RES INC COM26875P101Stock671,642$64,975,000thousands by filing date
BERRY GLOBAL GROUP INC08579W103COM1,140,658$64,618,000thousands by filing date
HILL ROM HLDGS INC431475102COM867,924$64,226,000thousands by filing date
BREAD FINANCIAL HOLDINGS INC018581108COM288,141$63,838,000thousands by filing date
ALEXION PHARMACEUTICALS INC015351109COM453,167$63,575,000thousands by filing date
SBA COMMUNICATIONS CORP CL A78410G104REIT440,139$63,402,000thousands by filing date
RAYMOND JAMES FINL INC COM754730109Stock749,294$63,188,000thousands by filing date
MONSTER BEVERAGE CORP NEW COM61174X109Stock1,117,209$61,726,000thousands by filing date
IHS MARKIT LTDG47567105SHS1,388,272$61,195,000thousands by filing date
INTERXION HOLDING N.VN47279109SHS1,174,316$59,808,000thousands by filing date
INSTALLED BLDG PRODS INC45780R101COM921,915$59,740,000thousands by filing date
WESTERN ALLIANCE BANCORP COM957638109Stock1,114,177$59,141,000thousands by filing date
NICE LTD SPONSORED ADR653656108ADR720,357$58,572,000thousands by filing date
KLX INC482539103COM1,092,960$57,850,000thousands by filing date
MSCI INC COM55354G100Stock494,635$57,823,000thousands by filing date
TRANSUNION COM89400J107Stock1,221,642$57,735,000thousands by filing date
ACCELERON PHARMA INC00434H108COM1,541,638$57,534,000thousands by filing date
CIENA CORP COM NEW171779309Stock2,594,285$56,996,000thousands by filing date
ENVISION HEALTHCARE CORP29414D100COM1,259,300$56,606,000thousands by filing date
VANTIV INC92210H105CL A782,091$55,114,000thousands by filing date
MACQUARIE INFRASTRUCTURE HOLDI55608B105COMMON UNITS761,928$54,996,000thousands by filing date
LAM RESEARCH CORP512807108COM294,419$54,479,000thousands by filing date
TOTAL SYS SVCS INC891906109COM830,430$54,393,000thousands by filing date
FORTINET INC COM34959E109Stock1,502,823$53,861,000thousands by filing date
CYPRESS SEMICONDUCTOR CORP232806109COM3,529,249$53,009,000thousands by filing date
JBT MAREL CORPORATION477839104COM516,398$52,208,000thousands by filing date
DUNKIN BRANDS GROUP INC265504100COM977,879$51,906,000thousands by filing date
MGIC INVT CORP WIS COM552848103Stock4,099,552$51,367,000thousands by filing date
VALERO ENERGY CORP COM91913Y100Stock636,663$48,978,000thousands by filing date
ESSENT GROUP LTD COMG3198U102Stock1,206,810$48,876,000thousands by filing date
SIX FLAGS ENTERTAINMENT CORP83001A102COM795,695$48,490,000thousands by filing date
PACIRA BIOSCIENCES INC COM695127100Stock1,285,850$48,284,000thousands by filing date
SPLUNK INC848637104COM724,289$48,115,000thousands by filing date
BUILDERS FIRSTSOURCE INC COM12008R107Stock2,650,809$47,688,000thousands by filing date
FIDELITY NATL INFORMATION SVCS COM31620M106Stock494,400$46,172,000thousands by filing date
EQUINIX INC COM29444U700REIT103,131$46,027,000thousands by filing date
GARTNERINC366651107STOK360,070$44,796,000thousands by filing date
ORBOTECH LTDM75253100ORD1,044,286$44,079,000thousands by filing date
BANK OF N T BUTTERFIELD & SOG0772R208SHS NEW1,199,020$43,932,000thousands by filing date
ELDORADO RESORTS INC28470R102COM1,689,249$43,329,000thousands by filing date
BIOVERATIV INC09075E100COM757,209$43,214,000thousands by filing date
AXALTA COATING SYS LTD COMG0750C108Stock1,482,420$42,872,000thousands by filing date
INTEGRA LIFESCIENCES HLDGS C457985208COM NEW840,556$42,431,000thousands by filing date
NEXSTAR MEDIA GROUP INC COMMON STOCK65336K103Stock673,228$41,942,000thousands by filing date
FLOWSERVE CORP34354P105COM978,274$41,665,000thousands by filing date
PALO ALTO NETWORKS INC697435105COM285,691$41,168,000thousands by filing date
OMNICELL COM COM68213N109Stock798,212$40,749,000thousands by filing date
PROTHENA CORP PLC SHSG72800108Stock623,489$40,383,000thousands by filing date
SUN CMNTYS INC COM866674104REIT467,879$40,088,000thousands by filing date
AVEXIS INC05366U100COM409,000$39,563,000thousands by filing date
QUEST DIAGNOSTICS INC COM74834L100Stock413,651$38,734,000thousands by filing date
AUTODESK INC COM052769106Stock337,409$37,878,000thousands by filing date
CLOVIS ONCOLOGY INC189464100COM459,470$37,860,000thousands by filing date
ON SEMICONDUCTOR CORP COM682189105Stock2,042,769$37,730,000thousands by filing date
GRACE W R & CO DEL NEW COM38388F108Stock521,495$37,626,000thousands by filing date
DANA INC235825205COM1,336,871$37,379,000thousands by filing date
CRANE CO224399105COM464,495$37,155,000thousands by filing date
REALPAGE INC75606N109COM924,228$36,877,000thousands by filing date
SMITH A O CORP COM831865209Stock618,464$36,755,000thousands by filing date
PIONEER NATURAL RESOURCES CO723787107COM245,495$36,220,000thousands by filing date
BRIGHT HORIZONS FAM SOL IN DEL COM109194100Stock419,731$36,185,000thousands by filing date
BMC STK HLDGS INC05591B109COM1,679,076$35,848,000thousands by filing date
RUSH ENTERPRISES INC CL A781846209Stock771,376$35,707,000thousands by filing date
PROOFPOINT INC743424103COM401,245$34,997,000thousands by filing date
OLD DOMINION FREIGHT LINE INC COM679580100Stock311,552$34,305,000thousands by filing date
MGM RESORTS INTERNATIONAL552953101COM1,043,905$34,021,000thousands by filing date
VULCAN MATLS CO COM929160109Stock284,381$34,012,000thousands by filing date
EAST WEST BANCORP INC COM27579R104Stock559,290$33,434,000thousands by filing date
MADISON SQUARE GRDN SPRT CORP CL A55825T103Stock153,248$32,810,000thousands by filing date
UNIVAR INC91336L107COMMON STOCK1,129,934$32,689,000thousands by filing date
FLEETCOR TECHNOLOGIES INC339041105COM210,789$32,624,000thousands by filing date
NCR VOYIX CORPORATION62886E108COM864,743$32,445,000thousands by filing date
PTC INC COM69370C100Stock566,216$31,867,000thousands by filing date
CAVIUM INC14964U108COM477,295$31,473,000thousands by filing date
TOPBUILD COR COM89055F103Stock477,315$31,107,000thousands by filing date
FCB Financial Holdings Inc Cla30255G103COM642,600$31,038,000thousands by filing date
AMERICAN CAMPUS COMMUNITIES024835100COM700,715$30,937,000thousands by filing date
DOLLAR TREE INC COM256746108Stock351,722$30,537,000thousands by filing date
MILACRON HLDGS CORP59870L106COM1,809,215$30,503,000thousands by filing date
WNS HOLDINGS LTD92932M101SPON ADR815,560$29,768,000thousands by filing date
COMMVAULT SYS INC COM204166102Stock485,029$29,490,000thousands by filing date
LIBERTY BROADBAND A530307107COMMON STOCK309,705$29,168,000thousands by filing date
SONIC CORP835451105COM1,110,995$28,275,000thousands by filing date
ACLARIS THERAPEUTICS INC COM00461U105Stock1,091,944$28,183,000thousands by filing date
TABLEAU SOFTWARE INC87336U105CL A375,891$28,150,000thousands by filing date
BOYDGAMINGCORP103304101STOK1,078,445$28,093,000thousands by filing date
DIAMONDBACK ENERGY INC COM25278X109Stock286,485$28,064,000thousands by filing date
INTEGRATED DEVICE TECHNOLOGY INC458118106COMMON STOCK1,053,795$28,010,000thousands by filing date
MONOLITHIC PWR SYS INC COM609839105Stock261,212$27,832,000thousands by filing date
MIDDLEBYCORP596278101STOK216,246$27,716,000thousands by filing date
FULLER H B CO COM359694106Stock476,700$27,677,000thousands by filing date
TELEDYNE TECHNOLOGIES INC COM879360105Stock172,130$27,400,000thousands by filing date
DENTSPLY SIRONA INC24906P109COM448,855$26,846,000thousands by filing date
ZENDESK INC98936J101COM894,475$26,038,000thousands by filing date
EXPEDIA GROUP INC COM NEW30212P303Stock180,239$25,944,000thousands by filing date
PVH CORPORATION COM693656100Stock205,221$25,870,000thousands by filing date
MAXIM INTEGRATED PRODS INC57772K101COM535,652$25,556,000thousands by filing date
CYBERARK SOFTWARE LTD SHSM2682V108Stock614,190$25,182,000thousands by filing date
ZAYO GROUP HLDGS INC COM98919V105Stock716,929$24,677,000thousands by filing date
BIOMARIN PHARMACEUTICAL INC09061G101COM263,925$24,563,000thousands by filing date
DEXCOM INC COM252131107Stock498,450$24,387,000thousands by filing date
NEUROCRINE BIOSCIENCES INC64125C109COM383,097$23,476,000thousands by filing date
NEW RELIC INC64829B100COMMON STOCK466,276$23,221,000thousands by filing date
RSP PERMIAN INC74978Q105COM665,200$23,009,000thousands by filing date
SOTHEBYS835898107COM497,220$22,927,000thousands by filing date
L BRANDS INC501797104COM546,779$22,751,000thousands by filing date
NEVRO CORP64157F103COM247,910$22,530,000thousands by filing date
EURONET WORLDWIDE INC COM298736109Stock235,964$22,367,000thousands by filing date
BIO RAD LABS INC090572207CL A99,788$22,175,000thousands by filing date
INPHI CORP45772F107COM557,240$22,117,000thousands by filing date
SLM CORP COM78442P106Stock1,920,510$22,028,000thousands by filing date
WATSCO INC COM942622200Stock135,744$21,864,000thousands by filing date
COHERENT INC192479103COM91,251$21,459,000thousands by filing date
BOTTOMLINE TECH INC DEL101388106COM640,782$20,396,000thousands by filing date
ACUSHNET HLDGS CORP005098108COM1,138,285$20,216,000thousands by filing date
QTS RLTY TR INC74736A103COM CL A385,948$20,208,000thousands by filing date
WAGEWORKS INC930427109COM330,565$20,065,000thousands by filing date
CAMDEN PPTY TR SH BEN INT133131102REIT219,300$20,055,000thousands by filing date
BROADSOFT INC11133B409COM397,151$19,977,000thousands by filing date
MICROCHIP TECHNOLOGY INC. COM595017104Stock221,975$19,929,000thousands by filing date
PACIFIC PREMIER BANCORP INC69478X105COM519,870$19,625,000thousands by filing date
MASIMO CORP COM574795100Stock225,979$19,561,000thousands by filing date
KAPSTONE PAPER AND PACKAGING C48562P103COM903,475$19,416,000thousands by filing date
SKYWORKS SOLUTIONS INC COM83088M102Stock181,340$18,479,000thousands by filing date
MASTEC INC COM576323109Stock376,015$17,447,000thousands by filing date
THE ULTIMATE SOFTWARE GROUP IN90385D107COM86,605$16,420,000thousands by filing date
COMMUNITY USD0.0120369C106COM583,882$15,741,000thousands by filing date
MERCURY SYS INC COM589378108Stock280,955$14,576,000thousands by filing date
MKS INC. COM55306N104Stock148,418$14,018,000thousands by filing date
CHEGG INC163092109COM853,035$12,659,000thousands by filing date
MATSON INC COM57686G105Stock446,253$12,575,000thousands by filing date
CANTEL MEDICAL CORP138098108COM120,830$11,379,000thousands by filing date
LITHIA MTRS INC COM536797103Stock93,811$11,286,000thousands by filing date
ORBCOMM INC68555P100COM1,065,085$11,151,000thousands by filing date
CARDIOME PHARMA CORP14159U301COM NO PAR4,858,454$10,349,000thousands by filing date
LUMENTUM HLDGS INC COM55024U109Stock188,200$10,229,000thousands by filing date
RESOLUTE ENERGY CORP76116A306COM NEW307,520$9,130,000thousands by filing date
STAG INDUSTRIAL INC85254J102COM315,702$8,672,000thousands by filing date
Texas Instruments Incorporated882508104COM77,120$6,913,000thousands by filing date
Cisco Systems,Inc.17275R102COM203,320$6,838,000thousands by filing date
Advanced Micro Devices,Inc.007903107COM507,615$6,472,000thousands by filing date
OCCIDENTAL PETE CORP674599105COM97,590$6,266,000thousands by filing date
Intel Corp458140100COM157,477$5,997,000thousands by filing date
BLACK KNIGHT INC09214X100COM135,760$5,844,000thousands by filing date
Thermo Fisher Scientific Inc.883556102COM30,211$5,716,000thousands by filing date
CUMMINS INC COM231021106Stock32,450$5,453,000thousands by filing date
CVS Health Corporation126650100COM65,885$5,358,000thousands by filing date
JPMorgan Chase & Co46625H100COM55,505$5,301,000thousands by filing date
HENRY JACK & ASSOC INC426281101COM51,184$5,261,000thousands by filing date
MOTOROLA SOLUTIONS INC COM NEW620076307Stock61,610$5,229,000thousands by filing date
Oracle Corporation68389X105COM102,645$4,963,000thousands by filing date
KIMBERLY-CLARK CORP COM494368103Stock40,047$4,713,000thousands by filing date
Lockheed Martin Corporation539830109COM13,388$4,154,000thousands by filing date
Honeywell Technologies438516106COM28,470$4,035,000thousands by filing date
LIVE NATION ENTERTAINMENT INC COM538034109Stock47,350$2,062,000thousands by filing date
MARTEN TRANSPORT LTD573075108COM98,566$2,026,000thousands by filing date
WASTE CONNECTIONS INC COM94106B101Stock13,986$978,000thousands by filing date
LIONS GATE ENTMNT CORP535919401CL A VTG27,795$930,000thousands by filing date
CABOT MICROELECTRONICS CORP12709P103COM10,723$857,000thousands by filing date
CSX Corporation126408103COM15,000$814,000thousands by filing date
Merck & Co.,Inc.58933Y105COM12,159$779,000thousands by filing date
LULULEMON ATHLETICA INC550021109COM10,500$654,000thousands by filing date
NATURAL GROCERS BY VITAMIN C63888U108COMMON STOCK100,000$558,000thousands by filing date
PRA HEALTH SCIENCES INC69354M108COM6,900$526,000thousands by filing date
LANDSTAR SYS INC COM515098101Stock4,600$458,000thousands by filing date
ZYNGA INC.98986T108CL A113,700$430,000thousands by filing date
FEDEX CORP COM31428X106Stock1,900$429,000thousands by filing date
STATE STR CORP COM857477103Stock3,840$367,000thousands by filing date
WEST PHARMACEUTICAL SVSC INC COM955306105Stock3,700$356,000thousands by filing date
NMI HLDGS INC629209305COM27,700$343,000thousands by filing date
Schlumberger Limited806857108COM4,824$337,000thousands by filing date
LAS VEGAS SANDS CORP COM517834107Stock5,100$327,000thousands by filing date
ACTVISION BLIZZARD INC00507V109COM5,000$323,000thousands by filing date
VENTAS INC COM92276F100REIT4,719$307,000thousands by filing date
GRUBHUB INC400110102COM5,800$305,000thousands by filing date
International Business Machines Corporation459200101COM2,000$290,000thousands by filing date
BLOCK INC CL A852234103Stock9,600$277,000thousands by filing date
TRIPADVISOR INC896945201COM6,600$267,000thousands by filing date
GENERAL ELEC CO369604103COM10,538$255,000thousands by filing date
MESA LABS INC COM59064R109Stock1,600$239,000thousands by filing date
CONTRAFECT CORP212326102COM150,700$167,000thousands by filing date
ARCOS DORADOS HLDGS INCG0457F107SHS CLASS -A -10,370$104,000thousands by filing date
AU OPTRONICS CORP002255107SPONSORED ADR16,900$68,000thousands by filing date

Amendment chain

FilingRoleFiledAcceptedIngested
13F-HR 0001085146-17-002296this filing2017-11-13acceptance time not in the bulk data set