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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 2018-06-30, filed 2018-08-13, with 243 holding rows worth $13,396,173,000.

Accession
0001085146-18-001995
Filed
2018-08-13
Accepted by EDGAR
acceptance time not in the bulk data set
Ingested
Source
SEC quarterly data set

Original filing

13F report for Q2 2018

A holdings report, 243 entries on the cover page, a total value of $13,396,173,000 stated on the cover page (in dollars after the unit check, H1), rows summing to $13,396,173,000 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
Amazon.com, Inc023135106COM220,085$374,100,000thousands by filing date
Apple Inc037833100COM1,847,154$341,927,000thousands by filing date
META PLATFORMS INC CL A30303M102COM1,588,025$308,585,000thousands by filing date
Visa Inc92826C839COM1,922,214$254,597,000thousands by filing date
Microsoft Corp594918104COM2,532,793$249,759,000thousands by filing date
Alphabet Inc. Reg. Shares C02079K107COM208,205$232,284,000thousands by filing date
THE COOPER COMPANIES216648402COM NEW840,266$197,841,000thousands by filing date
ANDEAVOR03349M105COM1,503,753$197,262,000thousands by filing date
METTLER TOLEDO INTERNATIONAL COM592688105Stock337,748$195,431,000thousands by filing date
Alphabet Inc. Reg. Shares A02079K305COM165,640$187,039,000thousands by filing date
Home Depot, Inc437076102COM937,188$182,845,000thousands by filing date
AMETEK INC COM031100100Stock2,437,522$175,892,000thousands by filing date
UnitedHealth Group Inc91324P102COM706,845$173,417,000thousands by filing date
Salesforce.com, Inc79466L302COM1,252,984$170,907,000thousands by filing date
Boeing Company097023105COM508,268$170,529,000thousands by filing date
Union Pacific Corporation907818108COM1,191,822$168,857,000thousands by filing date
JAZZ PHARMACEUTICALS PLC SHS USDG50871105Stock883,961$152,306,000thousands by filing date
Vertex Pharmaceuticals Incorporated92532F100COM871,856$148,181,000thousands by filing date
ServiceNow,Inc.81762P102COM854,747$147,418,000thousands by filing date
CONSTELLATION BRANDS INC CL A21036P108Stock667,635$146,125,000thousands by filing date
Adobe Inc00724F101COM522,685$127,436,000thousands by filing date
MEDICINES CO584688105COM3,281,183$120,419,000thousands by filing date
DOWDUPONT INC26078J100COM1,807,306$119,138,000thousands by filing date
HUNT J B TRANS SVCS INC COM445658107Stock976,462$118,689,000thousands by filing date
TELEDYNE TECHNOLOGIES INC COM879360105Stock595,388$118,518,000thousands by filing date
Costco Wholesale Corporation22160K105COM566,738$118,437,000thousands by filing date
INGERSOLL-RAND PLCG47791101SHS1,317,473$118,217,000thousands by filing date
Progressive Corporation743315103COM1,963,655$116,150,000thousands by filing date
MARRIOTT INTL INC NEW CL A571903202Stock904,893$114,559,000thousands by filing date
EOG RES INC COM26875P101Stock897,729$111,704,000thousands by filing date
CELGENE CORP151020104COM1,405,143$111,596,000thousands by filing date
MasterCard, Inc57636Q104COM565,668$111,165,000thousands by filing date
ILLINOIS TOOL WKS INC452308109COM778,614$107,869,000thousands by filing date
CELANESE CORP DEL COM150870103Stock957,599$106,351,000thousands by filing date
Broadcom Inc.11135F101COM433,079$105,082,000thousands by filing date
UNITED AIRLS HLDGS INC COM910047109Stock1,456,228$101,543,000thousands by filing date
S&P Global,Inc.78409V104COM490,776$100,064,000thousands by filing date
Thermo Fisher Scientific Inc.883556102COM481,460$99,730,000thousands by filing date
PINNACLE FOODS INC DEL72348P104COM1,517,931$98,757,000thousands by filing date
CME Group Inc. Class A12572Q105COM595,174$97,561,000thousands by filing date
WORLDPAY INC981558109CL A1,189,847$97,306,000thousands by filing date
PAYPALHLDGSINC70450Y103STOK1,137,145$94,690,000thousands by filing date
COMERICAINC200340107COM1,018,325$92,586,000thousands by filing date
TOTAL SYS SVCS INC891906109COM1,083,333$91,563,000thousands by filing date
LENNOX INTL INC COM526107107Stock454,039$90,876,000thousands by filing date
TRANSUNION COM89400J107Stock1,232,898$88,325,000thousands by filing date
AVERY DENNISON CORP COM053611109Stock857,822$87,584,000thousands by filing date
APTIV PLCG6095L109SHS940,908$86,215,000thousands by filing date
GALLAGHER ARTHUR J & CO COM363576109Stock1,312,960$85,710,000thousands by filing date
TRANSDIGM GROUP INC COM893641100Stock245,649$84,783,000thousands by filing date
PIONEER NATURAL RESOURCES CO723787107COM438,120$82,910,000thousands by filing date
BIOGEN INC COM09062X103Stock272,184$78,999,000thousands by filing date
ICON PUB LTD CO SHSG4705A100Stock592,615$78,539,000thousands by filing date
QUEST DIAGNOSTICS INC COM74834L100Stock712,933$78,380,000thousands by filing date
COGNIZANT TECHNOLOGY SOLUTIONS CL A192446102Stock970,210$76,637,000thousands by filing date
SIX FLAGS ENTERTAINMENT CORP83001A102COM1,083,549$75,903,000thousands by filing date
BIO RAD LABS INC090572207CL A261,562$75,471,000thousands by filing date
Applied Materials,Inc.038222105COM1,633,144$75,435,000thousands by filing date
FORTINET INC COM34959E109Stock1,185,485$74,010,000thousands by filing date
DELPHI TECHNOLOGIES PLCG2709G107SHS1,623,628$73,810,000thousands by filing date
WEX INC96208T104COM379,249$72,239,000thousands by filing date
International Business Machines Corporation459200101COM497,761$69,537,000thousands by filing date
LPL FINL HLDGS INC COM50212V100Stock1,060,735$69,521,000thousands by filing date
Bristol-Myers Squibb Company110122108COM1,238,227$68,523,000thousands by filing date
STERIS PLCG84720104SHS USD637,788$66,974,000thousands by filing date
COSTAR GROUP INC COM22160N109Stock157,617$65,038,000thousands by filing date
Walt Disney Co254687106COM608,960$63,825,000thousands by filing date
NICE LTD SPONSORED ADR653656108ADR615,049$63,824,000thousands by filing date
FIDELITY NATL INFORMATION SVCS COM31620M106Stock598,210$63,428,000thousands by filing date
RED HAT INC756577102COM471,222$63,318,000thousands by filing date
SUMMIT MATERIALS INC CLASS A86614U100CL A2,406,459$63,170,000thousands by filing date
LAM RESEARCH CORP512807108COM363,990$62,916,000thousands by filing date
NEXSTAR MEDIA GROUP INC COMMON STOCK65336K103Stock848,988$62,316,000thousands by filing date
CARNIVAL CORP COMMON STOCK143658300Stock1,076,349$61,686,000thousands by filing date
FLOWSERVE CORP34354P105COM1,473,921$59,546,000thousands by filing date
MADISON SQUARE GRDN SPRT CORP CL A55825T103Stock190,650$59,138,000thousands by filing date
MASIMO CORP COM574795100Stock605,387$59,116,000thousands by filing date
WESTERN ALLIANCE BANCORP COM957638109Stock1,038,999$58,818,000thousands by filing date
IHS MARKIT LTDG47567105SHS1,137,540$58,686,000thousands by filing date
WPX ENERGY INC98212B103COM3,241,680$58,447,000thousands by filing date
ALIBABA GROUP HLDG LTD01609W102SPONSORED ADS307,511$57,053,000thousands by filing date
SPLUNK INC848637104COM564,140$55,912,000thousands by filing date
FLEETCOR TECHNOLOGIES INC339041105COM264,855$55,792,000thousands by filing date
AXALTA COATING SYS LTD COMG0750C108Stock1,767,605$53,576,000thousands by filing date
SERVICEMASTER GLOBAL HOLDING81761R109COMMON STOCK891,755$53,033,000thousands by filing date
Analog Devices,Inc.032654105COM548,869$52,648,000thousands by filing date
NCR VOYIX CORPORATION62886E108COM1,744,158$52,290,000thousands by filing date
CANTEL MEDICAL CORP138098108COM527,441$51,879,000thousands by filing date
LIONS GATE ENTMNT CORP535919500CL B NON VTG2,188,853$51,350,000thousands by filing date
BANK OF N T BUTTERFIELD & SOG0772R208SHS NEW1,096,140$50,116,000thousands by filing date
BLACK KNIGHT INC COM09215C105Stock930,686$49,838,000thousands by filing date
Micron Technology,Inc.595112103COM942,423$49,421,000thousands by filing date
ARAMARK COM03852U106Stock1,311,747$48,666,000thousands by filing date
TIFFANY & CO NEW886547108COM367,837$48,407,000thousands by filing date
GODADDY INC CL A380237107Stock655,020$46,244,000thousands by filing date
REALPAGE INC75606N109COM830,495$45,760,000thousands by filing date
DIAMONDBACK ENERGY INC COM25278X109Stock345,657$45,478,000thousands by filing date
MICROCHIP TECHNOLOGY INC. COM595017104Stock497,805$45,275,000thousands by filing date
E TRADE FINANCIAL CORP269246401COM NEW732,725$44,813,000thousands by filing date
UNIVAR INC91336L107COMMON STOCK1,655,983$43,453,000thousands by filing date
HILTON WORLDWIDE HLDGS INC COM43300A203Stock543,942$43,058,000thousands by filing date
CATALENT INC USD 0.01148806102COM1,016,914$42,599,000thousands by filing date
INTEGRA LIFESCIENCES HLDGS C457985208COM NEW647,601$41,712,000thousands by filing date
IDEXX LABS INC COM45168D104Stock191,373$41,708,000thousands by filing date
BURLINGTON STORES INC COM122017106Stock274,640$41,342,000thousands by filing date
ALEXANDRIA REAL ESTATE EQ INC COM015271109REIT326,110$41,145,000thousands by filing date
COMMVAULT SYS INC COM204166102Stock615,984$40,563,000thousands by filing date
VAIL RESORTS INC COM91879Q109Stock145,110$39,788,000thousands by filing date
BOYDGAMINGCORP103304101STOK1,143,560$39,636,000thousands by filing date
RAYMOND JAMES FINL INC COM754730109Stock443,579$39,634,000thousands by filing date
ELDORADO RESORTS INC28470R102COM1,004,259$39,267,000thousands by filing date
MASTEC INC COM576323109Stock770,669$39,111,000thousands by filing date
ACCELERON PHARMA INC00434H108COM795,043$38,575,000thousands by filing date
GRACE W R & CO DEL NEW COM38388F108Stock513,463$37,642,000thousands by filing date
AUTODESK INC COM052769106Stock286,801$37,597,000thousands by filing date
CRANE CO224399105COM467,932$37,495,000thousands by filing date
NETAPP INC COM64110D104Stock475,031$37,304,000thousands by filing date
ZOETIS INC CL A98978V103Stock434,705$37,033,000thousands by filing date
PVH CORPORATION COM693656100Stock246,784$36,949,000thousands by filing date
GARTNERINC366651107STOK277,306$36,854,000thousands by filing date
CLOVIS ONCOLOGY INC189464100COM802,068$36,470,000thousands by filing date
FLIR SYS INC302445101COM697,027$36,224,000thousands by filing date
ORION S.A.L72967109COM1,171,913$36,154,000thousands by filing date
PALO ALTO NETWORKS INC697435105COM175,289$36,017,000thousands by filing date
ROBERT HALF INC. COM770323103Stock552,167$35,946,000thousands by filing date
VULCAN MATLS CO COM929160109Stock277,414$35,803,000thousands by filing date
SUN CMNTYS INC COM866674104REIT364,598$35,687,000thousands by filing date
THE ULTIMATE SOFTWARE GROUP IN90385D107COM138,506$35,639,000thousands by filing date
RUSH ENTERPRISES INC CL A781846209Stock817,586$35,467,000thousands by filing date
NEKTAR THERAPEUTICS640268108COM721,056$35,209,000thousands by filing date
BERRY GLOBAL GROUP INC08579W103COM764,816$35,136,000thousands by filing date
QTS RLTY TR INC74736A103COM CL A873,744$34,513,000thousands by filing date
ENVESTNET INC29404K106COM614,700$33,778,000thousands by filing date
INTEGRATED DEVICE TECHNOLOGY INC458118106COMMON STOCK1,044,465$33,298,000thousands by filing date
MSCI INC COM55354G100Stock201,000$33,251,000thousands by filing date
BUILDERS FIRSTSOURCE INC COM12008R107Stock1,811,060$33,124,000thousands by filing date
PROOFPOINT INC743424103COM283,865$32,732,000thousands by filing date
ZENDESK INC98936J101COM600,023$32,695,000thousands by filing date
ON SEMICONDUCTOR CORP COM682189105Stock1,432,660$31,855,000thousands by filing date
PTC INC COM69370C100Stock339,178$31,818,000thousands by filing date
MSA SAFETY INC COM553498106Stock325,370$31,346,000thousands by filing date
RYDER SYS INC COM783549108Stock428,990$30,827,000thousands by filing date
EAST WEST BANCORP INC COM27579R104Stock468,026$30,515,000thousands by filing date
DOLLAR TREE INC COM256746108Stock353,508$30,048,000thousands by filing date
STAG INDUSTRIAL INC85254J102COM1,099,147$29,930,000thousands by filing date
ESSENT GROUP LTD COMG3198U102Stock833,389$29,852,000thousands by filing date
INTERXION HOLDING N.VN47279109SHS477,441$29,802,000thousands by filing date
TABLEAU SOFTWARE INC87336U105CL A302,860$29,605,000thousands by filing date
INGEVITY CORP COM45688C107Stock365,115$29,523,000thousands by filing date
ALEXION PHARMACEUTICALS INC015351109COM236,585$29,372,000thousands by filing date
TRINSEO S AL9340P101SHS412,930$29,297,000thousands by filing date
ROCKWELL AUTOMATION INC COM773903109Stock171,923$28,579,000thousands by filing date
BRIGHT HORIZONS FAM SOL IN DEL COM109194100Stock276,978$28,396,000thousands by filing date
ASCENDIS PHARMA A/S DKK 1.0 AD04351P101SPONSORED ADR424,575$28,243,000thousands by filing date
CENTENNIAL RESOURCE DEV INC15136A102CL A1,520,720$27,464,000thousands by filing date
IRONWOOD PHARMACEUTICALS INC46333X108COMMON STOCK1,392,231$26,619,000thousands by filing date
AMERICAN EAGLE OUTFITTERS INC COM02553E106Stock1,144,570$26,611,000thousands by filing date
HEICO CORP NEW422806208CL A433,263$26,407,000thousands by filing date
EXPEDIA GROUP INC COM NEW30212P303Stock219,069$26,330,000thousands by filing date
TEXAS ROADHOUSE INC COM882681109Stock399,018$26,140,000thousands by filing date
FULLER H B CO COM359694106Stock485,040$26,037,000thousands by filing date
RSP PERMIAN INC74978Q105COM579,090$25,492,000thousands by filing date
CYRUSONE INC23283R100COM432,538$25,243,000thousands by filing date
DAVE & BUSTERS ENTMT INC238337109COM525,345$25,006,000thousands by filing date
FLOOR & DECOR HLDGS INC CL A339750101Stock504,191$24,872,000thousands by filing date
WRIGHT MED GROUP N VN96617118ORD SHS942,981$24,480,000thousands by filing date
KLX INC482539103COM336,179$24,171,000thousands by filing date
COMMSCOPE HLDG CO INC20337X109COM809,777$23,650,000thousands by filing date
PARTY CITY HOLDCO INC702149105COM1,547,610$23,601,000thousands by filing date
MILACRON HLDGS CORP59870L106COM1,245,692$23,581,000thousands by filing date
GUIDEWIRE SOFTWARE INC COM40171V100Stock261,523$23,218,000thousands by filing date
NEW RELIC INC64829B100COMMON STOCK228,114$22,946,000thousands by filing date
SANTANDER CONSUMER USA HOLDINGS80283M101COMMON STOCK1,196,820$22,847,000thousands by filing date
OLD DOMINION FREIGHT LINE INC COM679580100Stock152,702$22,746,000thousands by filing date
OMNICELL COM COM68213N109Stock433,249$22,724,000thousands by filing date
ADVANCED ENERGY INDS COM007973100Stock390,873$22,706,000thousands by filing date
ALNYLAM PHARMACEUTICALS INC COM02043Q107Stock228,140$22,470,000thousands by filing date
LIGHT & WONDER INC COM80874P109Stock452,680$22,249,000thousands by filing date
CAMDEN PPTY TR SH BEN INT133131102REIT237,495$21,643,000thousands by filing date
SVB FINANCIAL GROUP78486Q101COM74,694$21,569,000thousands by filing date
WATSCO INC COM942622200Stock115,285$20,553,000thousands by filing date
WNS HOLDINGS LTD92932M101SPON ADR393,600$20,538,000thousands by filing date
PACIFIC PREMIER BANCORP INC69478X105COM532,352$20,309,000thousands by filing date
CIENA CORP COM NEW171779309Stock751,661$19,927,000thousands by filing date
BOTTOMLINE TECH INC DEL101388106COM397,352$19,800,000thousands by filing date
KEMPER CORP COM488401100Stock259,327$19,618,000thousands by filing date
GREEN DOT CORP CLASS A39304D102CL A250,588$18,391,000thousands by filing date
NEUROCRINE BIOSCIENCES INC64125C109COM184,741$18,149,000thousands by filing date
NATIONAL VISION HLDGS INC COM63845R107Stock489,395$17,897,000thousands by filing date
CORREVIO PHARMA CORP22026V105COM4,627,954$17,494,000thousands by filing date
INTERSECT ENT INC46071F103COM461,532$17,284,000thousands by filing date
NOVOCURE LTDG6674U108ORD SHS509,610$15,951,000thousands by filing date
MONOLITHIC PWR SYS INC COM609839105Stock115,690$15,464,000thousands by filing date
ACLARIS THERAPEUTICS INC COM00461U105Stock750,604$14,990,000thousands by filing date
ULTRA CLEAN HLDGS INC COM90385V107Stock890,283$14,779,000thousands by filing date
LUMENTUM HLDGS INC COM55024U109Stock234,378$13,570,000thousands by filing date
BLUEPRINT MEDICINES CORP09627Y109COM212,980$13,520,000thousands by filing date
APELLIS PHARMACEUTICALS INC03753U106COM606,956$13,353,000thousands by filing date
ACACIA COMMUNICATIONS INC00401C108COM381,765$13,289,000thousands by filing date
FIBROGEN INC31572Q808COM211,665$13,250,000thousands by filing date
HAMILTON LANE INC407497106CL A270,918$12,996,000thousands by filing date
CYMABAY THERAPEUTICS INC23257D103COM915,220$12,282,000thousands by filing date
MGP INGREDIENTS INC NEW55303J106COM136,510$12,123,000thousands by filing date
ENVISION HEALTHCARE CORP29414D100COM246,315$10,840,000thousands by filing date
FATE THERAPEUTICS INC31189P102COM805,460$9,134,000thousands by filing date
Abbott Laboratories002824100COM142,430$8,687,000thousands by filing date
Walmart Inc.931142103COM100,690$8,624,000thousands by filing date
Texas Instruments Incorporated882508104COM77,660$8,562,000thousands by filing date
HFF INC40418F108CL A245,216$8,423,000thousands by filing date
OCCIDENTAL PETE CORP674599105COM98,195$8,217,000thousands by filing date
CONAGRA FOODS INC205887102COM222,675$7,956,000thousands by filing date
JPMorgan Chase & Co46625H100COM68,830$7,172,000thousands by filing date
Verizon Communications Inc92343V104COM140,160$7,051,000thousands by filing date
HENRY JACK & ASSOC INC426281101COM50,949$6,642,000thousands by filing date
CITIZENS FINL GROUP INC COM174610105Stock160,070$6,227,000thousands by filing date
SUNCOR ENERGY INC NEW COM867224107Stock148,805$6,053,000thousands by filing date
Caterpillar Inc.149123101COM41,940$5,690,000thousands by filing date
ROYAL CARIBBEAN GROUP COMV7780T103Stock53,415$5,534,000thousands by filing date
DELTA AIR LINES INC COM NEW247361702Stock109,095$5,405,000thousands by filing date
NextEra Energy,Inc.65339F101COM31,490$5,260,000thousands by filing date
ANDEAVOR LOGISTICS LP NPV03350F106COM UNIT LP INT123,275$5,243,000thousands by filing date
ARCHER DANIELS MIDLAND CO COM039483102Stock99,730$4,571,000thousands by filing date
Danaher Corporation235851102COM38,292$3,779,000thousands by filing date
Bank of America Corp060505104COM99,410$2,802,000thousands by filing date
MARTEN TRANSPORT LTD573075108COM98,166$2,302,000thousands by filing date
LIVE NATION ENTERTAINMENT INC COM538034109Stock47,350$2,300,000thousands by filing date
WASTE CONNECTIONS INC COM94106B101Stock13,686$1,030,000thousands by filing date
CSX Corporation126408103COM15,000$957,000thousands by filing date
Philip Morris International Inc.718172109COM11,100$896,000thousands by filing date
BREAD FINANCIAL HOLDINGS INC018581108COM3,350$781,000thousands by filing date
Merck & Co.,Inc.58933Y105COM12,159$738,000thousands by filing date
LIONS GATE ENTMNT CORP535919401CL A VTG27,795$690,000thousands by filing date
SPDR SERIES TRUST78464A698ST STR SP REGBNK8,900$543,000thousands by filing date
SBA COMMUNICATIONS CORP CL A78410G104REIT3,100$512,000thousands by filing date
PAGSEGURO DIGITAL LTDG68707101COM CL A15,400$427,000thousands by filing date
Netflix, Inc64110L106COM938$367,000thousands by filing date
WEST PHARMACEUTICAL SVSC INC COM955306105Stock3,700$367,000thousands by filing date
TAKE-TWO INTERACTIVE SOFTWARE COM874054109Stock3,100$367,000thousands by filing date
MONARCH CASINO & RESORT INC609027107COM7,600$335,000thousands by filing date
Schlumberger Limited806857108COM4,824$323,000thousands by filing date
VENTAS INC COM92276F100REIT4,719$269,000thousands by filing date
SALEM MEDIA GROUP INC CLASS A794093104COM50,600$261,000thousands by filing date
Inflarx NvN44821101COM7,300$235,000thousands by filing date

Amendment chain

FilingRoleFiledAcceptedIngested
13F-HR 0001085146-18-001995this filing2018-08-13acceptance time not in the bulk data set