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WESTFIELD CAPITAL MANAGEMENT CO LP

Q2 2023 · 13F-HR

WESTFIELD CAPITAL MANAGEMENT CO LPholdings as filed

Filed 2023-08-11 · accession 0001085146-23-003305

$15.74B
Reported value
227
Positions
2023-06-30
Period end
View analyzed profile →PRO

Holdings as filed

CUSIPTickerIssuerValue% port.SharesClassVoting
037833100AAPLAPPLE INC$532.6M3.38%2,746,033CommonSOLE
594918104MSFTMICROSOFT CORP$470.5M2.99%1,381,739CommonSOLE
02079K305GOOGLALPHABET INC$405.7M2.58%3,389,621CommonSOLE
G4705A100ICLRICON PLC$344.6M2.19%1,377,475CommonSOLE
893641100TDGTRANSDIGM GROUP INC$325.3M2.07%363,795CommonSOLE
04351P101ASNDUSDASCENDIS PHARMA A/S$324.1M2.06%3,631,712CommonSOLE
023135106AMZNAMAZON COM INC$315.2M2.00%2,418,239CommonSOLE
92826C839VVISA INC$259.1M1.65%1,090,906CommonSOLE
67066G104NVDANVIDIA CORPORATION$225.8M1.43%533,850CommonSOLE
12008R107BLDRBUILDERS FIRSTSOURCE INC$223.4M1.42%1,642,986CommonSOLE
34959E109FTNTFORTINET INC$215.9M1.37%2,856,178CommonSOLE
30303M102METAMETA PLATFORMS INC$207.9M1.32%724,503CommonSOLE
91324P102UNHUNITEDHEALTH GROUP INC$204.6M1.30%425,707CommonSOLE
169656105CMGCHIPOTLE MEXICAN GRILL INC$196.4M1.25%91,804CommonSOLE
532457108LLYLILLY ELI & CO$186.2M1.18%396,950CommonSOLE
457730109INSPINSPIRE MED SYS INC$183.0M1.16%563,667CommonSOLE
81762P102NOWSERVICENOW INC$175.0M1.11%311,402CommonSOLE
78709Y105SAIASAIA INC$173.5M1.10%506,741CommonSOLE
031100100AMEAMETEK INC$173.5M1.10%1,071,812CommonSOLE
443573100HUBSHUBSPOT INC$169.7M1.08%318,938CommonSOLE
574795100MASIMASIMO CORP$156.9M1.00%953,799CommonSOLE
090572207BIOBIO RAD LABS INC$153.1M0.97%403,812CommonSOLE
50212V100LPLALPL FINL HLDGS INC$141.4M0.90%650,449CommonSOLE
95082P105WCCWESCO INTL INC$138.1M0.88%771,137CommonSOLE
79466L302CRMSALESFORCE INC$135.9M0.86%643,458CommonSOLE
252131107DXCMDEXCOM INC$132.4M0.84%1,030,514CommonSOLE
303250104FICOFAIR ISAAC CORP$129.6M0.82%160,128CommonSOLE
971378104WSCWILLSCOT MOBIL MINI HLDNG CO$129.1M0.82%2,701,192CommonSOLE
882681109TXRHTEXAS ROADHOUSE INC$129.1M0.82%1,149,641CommonSOLE
876030107TPRTAPESTRY INC$128.1M0.81%2,992,696CommonSOLE
573874104MRVLMARVELL TECHNOLOGY INC$124.7M0.79%2,086,452CommonSOLE
68404L201OPCHOPTION CARE HEALTH INC$122.4M0.78%3,768,278CommonSOLE
437076102HDHOME DEPOT INC$122.2M0.78%393,274CommonSOLE
22160K105COSTCOSTCO WHSL CORP NEW$113.5M0.72%210,882CommonSOLE
45784P101PODDINSULET CORP$113.1M0.72%392,339CommonSOLE
533900106LECOLINCOLN ELEC HLDGS INC$111.6M0.71%561,720CommonSOLE
653656108NICENICE LTD$105.9M0.67%512,803CommonSOLE
773903109ROKROCKWELL AUTOMATION INC$103.5M0.66%314,273CommonSOLE
315616102FFIVF5 INC$102.9M0.65%703,360CommonSOLE
443510607HUBBHUBBELL INC$102.9M0.65%310,216CommonSOLE
83200N103SMARGBPSMARTSHEET INC$99.3M0.63%2,595,732CommonSOLE
848637104SPLKCHFSPLUNK INC$99.0M0.63%933,567CommonSOLE
88160R101TSLATESLA INC$99.0M0.63%378,034CommonSOLE
302492103FLYWFLYWIRE CORPORATION$98.9M0.63%3,186,118CommonSOLE
05352A100AVTRAVANTOR INC$97.2M0.62%4,729,799CommonSOLE
743315103PGRPROGRESSIVE CORP$96.7M0.61%730,502CommonSOLE
516544103LNTHLANTHEUS HLDGS INC$96.6M0.61%1,150,597CommonSOLE
697435105PANWPALO ALTO NETWORKS INC$94.1M0.60%368,318CommonSOLE
25179M103DVNDEVON ENERGY CORP NEW$94.0M0.60%1,943,888CommonSOLE
G3922B107GGENPACT LIMITED$93.8M0.60%2,495,821CommonSOLE
428291108HXLHEXCEL CORP NEW$93.6M0.59%1,231,086CommonSOLE
55354G100MSCIMSCI INC$93.3M0.59%198,714CommonSOLE
127387108CDNSCADENCE DESIGN SYSTEM INC$92.0M0.58%392,128CommonSOLE
363576109AJGGALLAGHER ARTHUR J & CO$90.4M0.57%411,769CommonSOLE
292562105WIREEURENCORE WIRE CORP$90.1M0.57%484,373CommonSOLE
21036P108STZCONSTELLATION BRANDS INC$89.1M0.57%361,802CommonSOLE
98138H101WDAYWORKDAY INC$88.9M0.57%393,772CommonSOLE
552953101MGMMGM RESORTS INTERNATIONAL$88.0M0.56%2,003,214CommonSOLE
268150109DTDYNATRACE INC$87.4M0.56%1,698,742CommonSOLE
17275R102CSCOCISCO SYS INC$86.8M0.55%1,678,528CommonSOLE
92839U206VCVISTEON CORP$86.0M0.55%598,544CommonSOLE
88025T102TENBTENABLE HLDGS INC$85.7M0.54%1,967,115CommonSOLE
907818108UNPUNION PAC CORP$85.2M0.54%416,147CommonSOLE
25243Q205DEODIAGEO PLC$84.4M0.54%486,558CommonSOLE
05577W200DOOBRP INC$83.5M0.53%986,700CommonSOLE
595017104MCHPMICROCHIP TECHNOLOGY INC.$80.7M0.51%900,653CommonSOLE
37940X102GPNGLOBAL PMTS INC$79.7M0.51%809,275CommonSOLE
243537107DECKDECKERS OUTDOOR CORP$79.0M0.50%149,687CommonSOLE
33829M101FIVEFIVE BELOW INC$77.9M0.50%396,562CommonSOLE
150870103CECELANESE CORP DEL$77.3M0.49%667,215CommonSOLE
22160N109CSGPCOSTAR GROUP INC$76.8M0.49%863,471CommonSOLE
053611109AVYAVERY DENNISON CORP$76.5M0.49%445,179CommonSOLE
15677J108DAYCERIDIAN HCM HLDG INC$76.5M0.49%1,141,756CommonSOLE
942622200WSOWATSCO INC$75.9M0.48%199,023CommonSOLE
45167R104IEXIDEX CORP$75.5M0.48%350,797CommonSOLE
25278X109FANGDIAMONDBACK ENERGY INC$75.1M0.48%571,721CommonSOLE
73278L105POOLPOOL CORP$74.4M0.47%198,641CommonSOLE
03076C106AMPAMERIPRISE FINL INC$74.2M0.47%223,412CommonSOLE
89400J107TRUTRANSUNION$74.0M0.47%944,671CommonSOLE
43300A203HLTHILTON WORLDWIDE HLDGS INC$74.0M0.47%508,138CommonSOLE
866674104SUISUN CMNTYS INC$73.5M0.47%563,748CommonSOLE
550021109LULULULULEMON ATHLETICA INC$73.0M0.46%192,813CommonSOLE
77313F106RCKTROCKET PHARMACEUTICALS INC$72.6M0.46%3,655,787CommonSOLE
75700L108RRRRED ROCK RESORTS INC$72.6M0.46%1,551,186CommonSOLE
G01767105ALKSALKERMES PLC$72.5M0.46%2,315,310CommonSOLE
03990B101ARESARES MANAGEMENT CORPORATION$72.3M0.46%750,632CommonSOLE
929160109VMCVULCAN MATLS CO$72.3M0.46%320,688CommonSOLE
693506107PPGPPG INDS INC$69.2M0.44%466,455CommonSOLE
216648402COOPER COS INC$69.0M0.44%179,902CommonSOLE
70438V106PCTYPAYLOCITY HLDG CORP$68.8M0.44%372,736CommonSOLE
90353T100UBERUBER TECHNOLOGIES INC$68.5M0.44%1,586,966CommonSOLE
52490G102LEGNLEGEND BIOTECH CORP$67.1M0.43%972,054CommonSOLE
78409V104SPGIS&P GLOBAL INC$66.6M0.42%166,078CommonSOLE
803607100SRPTSAREPTA THERAPEUTICS INC$65.9M0.42%575,782CommonSOLE
453204109PIIMPINJ INC$65.4M0.42%729,889CommonSOLE
45168D104IDXXIDEXX LABS INC$65.3M0.42%130,079CommonSOLE
445658107JBHTHUNT J B TRANS SVCS INC$63.6M0.40%351,574CommonSOLE
217204106CPRTCOPART INC$63.1M0.40%691,310CommonSOLE
931142103WMTWALMART INC$62.9M0.40%399,987CommonSOLE
016255101ALGNALIGN TECHNOLOGY INC$62.5M0.40%176,706CommonSOLE
974155103WINGWINGSTOP INC$61.6M0.39%307,664CommonSOLE
60937P106MDBMONGODB INC$61.1M0.39%148,661CommonSOLE
12514G108CDWCDW CORP$60.1M0.38%327,726CommonSOLE
64110D104NTAPNETAPP INC$59.7M0.38%781,914CommonSOLE
038222105AMATAPPLIED MATLS INC$58.6M0.37%405,687CommonSOLE
69370C100PTCPTC INC$57.1M0.36%401,095CommonSOLE
94106B101WCNWASTE CONNECTIONS INC$55.1M0.35%385,630CommonSOLE
03753U106APLSUSDAPELLIS PHARMACEUTICALS INC$54.3M0.35%596,232CommonSOLE
880770102TERTERADYNE INC$54.3M0.34%487,320CommonSOLE
55024U109LITELUMENTUM HLDGS INC$53.6M0.34%945,342CommonSOLE
302491303FMCFMC CORP$53.4M0.34%511,805CommonSOLE
69047Q102OVVOVINTIV INC$52.4M0.33%1,376,035CommonSOLE
45073V108ITTITT INC$52.4M0.33%561,832CommonSOLE
98980G102ZSZSCALER INC$52.0M0.33%355,503CommonSOLE
339041105FLT1EURFLEETCOR TECHNOLOGIES INC$51.9M0.33%206,620CommonSOLE
000360206AAONAAON INC$51.3M0.33%541,030CommonSOLE
109194100BFAMBRIGHT HORIZONS FAM SOL IN D$50.7M0.32%548,660CommonSOLE
G6095L109APTIV PLC$50.3M0.32%493,001CommonSOLE
147448104CWSTCASELLA WASTE SYS INC$49.9M0.32%552,187CommonSOLE
09073M104TECHBIO-TECHNE CORP$49.6M0.31%607,141CommonSOLE
026874784AIGAMERICAN INTL GROUP INC$49.5M0.31%860,251CommonSOLE
84860W300SRCUSDSPIRIT RLTY CAP INC NEW$48.7M0.31%1,236,767CommonSOLE
91879Q109MTNVAIL RESORTS INC$48.6M0.31%192,928CommonSOLE
040413106ANETEURARISTA NETWORKS INC$47.9M0.30%295,786CommonSOLE
05464C101AXONAXON ENTERPRISE INC$47.8M0.30%244,843CommonSOLE
099502106BAHBOOZ ALLEN HAMILTON HLDG COR$47.6M0.30%426,876CommonSOLE
74164M108PRIPRIMERICA INC$46.5M0.30%235,168CommonSOLE
82452J109FOURSHIFT4 PMTS INC$45.8M0.29%674,775CommonSOLE
665531307NOGNORTHERN OIL & GAS INC$44.9M0.29%1,307,658CommonSOLE
49714P108KNSLKINSALE CAP GROUP INC$43.7M0.28%116,700CommonSOLE
007903107AMDADVANCED MICRO DEVICES INC$42.8M0.27%375,542CommonSOLE
679295105OKTAOKTA INC$42.3M0.27%610,561CommonSOLE
31946M103FCNCAFIRST CTZNS BANCSHARES INC N$41.4M0.26%32,264CommonSOLE
G0750C108AXTAAXALTA COATING SYS LTD$40.4M0.26%1,231,136CommonSOLE
57060D108MKTXMARKETAXESS HLDGS INC$40.2M0.26%153,852CommonSOLE
59001A102MTHMERITAGE HOMES CORP$39.6M0.25%278,113CommonSOLE
171484108CHDNCHURCHILL DOWNS INC$39.5M0.25%283,689CommonSOLE
538034109LYVLIVE NATION ENTERTAINMENT IN$39.0M0.25%428,530CommonSOLE
759916109RGENREPLIGEN CORP$38.3M0.24%271,005CommonSOLE
12685J105CABOCABLE ONE INC$37.9M0.24%57,696CommonSOLE
297178105ESSESSEX PPTY TR INC$36.6M0.23%156,161CommonSOLE
05368V106AVNTAVIENT CORPORATION$36.3M0.23%888,522CommonSOLE
79589L106IOTSAMSARA INC$35.6M0.23%1,286,486CommonSOLE
64125C109NBIXNEUROCRINE BIOSCIENCES INC$35.4M0.22%375,340CommonSOLE
405024100HAEHAEMONETICS CORP MASS$34.8M0.22%408,819CommonSOLE
74624M102PPURE STORAGE INC$34.2M0.22%928,601CommonSOLE
29786A106ETSYETSY INC$32.0M0.20%377,817CommonSOLE
72703H101PLNTPLANET FITNESS INC$31.8M0.20%471,522CommonSOLE
10316T104BOXBOX INC$31.1M0.20%1,059,557CommonSOLE
91347P105OLEDUNIVERSAL DISPLAY CORP$30.3M0.19%210,003CommonSOLE
114340102AZTAAZENTA INC$30.1M0.19%644,791CommonSOLE
65290C105NEXTIER OILFIELD SOLUTIONS$29.9M0.19%3,339,174CommonSOLE
92932M101WNSNWNS HLDGS LTD$29.4M0.19%398,871CommonSOLE
01988P108MDRXVERADIGM INC$28.2M0.18%2,236,112CommonSOLE
96208T104WEXWEX INC$27.3M0.17%150,147CommonSOLE
81730H109SSENTINELONE INC$26.7M0.17%1,767,167CommonSOLE
13100M509CALXCALIX INC$26.5M0.17%531,402CommonSOLE
683344105ONTOONTO INNOVATION INC$26.3M0.17%226,199CommonSOLE
406216101HALHALLIBURTON CO$25.6M0.16%777,473CommonSOLE
55405Y100MTSIMACOM TECH SOLUTIONS HLDGS I$25.6M0.16%391,368CommonSOLE
747525103QCOMQUALCOMM INC$25.6M0.16%215,334CommonSOLE
883556102TMOTHERMO FISHER SCIENTIFIC INC$25.4M0.16%48,613CommonSOLE
G8060N102STSENSATA TECHNOLOGIES HLDG PL$24.7M0.16%549,387CommonSOLE
45781M101INVAINNOVIVA INC$24.4M0.16%1,917,251CommonSOLE
85254J102STAGSTAG INDL INC$23.5M0.15%653,938CommonSOLE
649445103NYCBEURNEW YORK CMNTY BANCORP INC$22.7M0.14%2,021,885CommonSOLE
501242101KLICKULICKE & SOFFA INDS INC$21.9M0.14%368,191CommonSOLE
G3323L100FNFABRINET$21.6M0.14%166,669CommonSOLE
85914M107STEPSTEPSTONE GROUP INC$21.6M0.14%871,852CommonSOLE
61559X104MLTXMOONLAKE IMMUNOTHERAPEUTICS$20.9M0.13%410,119CommonSOLE
11135F101AVGOBROADCOM INC$20.9M0.13%24,088CommonSOLE
15872M104APY1EURCHAMPIONX CORPORATION$20.2M0.13%650,105CommonSOLE
69753M105PLMRPALOMAR HLDGS INC$20.0M0.13%343,936CommonSOLE
15678U128CERE1EURCEREVEL THERAPEUTICS HLDNG I$18.3M0.12%575,534CommonSOLE
63845R107EYENATIONAL VISION HLDGS INC$16.3M0.10%670,232CommonSOLE
282559103ETNBGBP89BIO INC$15.8M0.10%835,231CommonSOLE
459200101IBMINTERNATIONAL BUSINESS MACHS$11.3M0.07%84,815CommonSOLE
02079K107GOOGALPHABET INC$9.9M0.06%82,189CommonSOLE
713448108PEPPEPSICO INC$9.5M0.06%51,446CommonSOLE
58933Y105MRKMERCK & CO INC$9.4M0.06%81,399CommonSOLE
191216100KOCOCA COLA CO$8.3M0.05%138,056CommonSOLE
G8994E103TTTRANE TECHNOLOGIES PLC$8.2M0.05%42,642CommonSOLE
654106103NKENIKE INC$7.5M0.05%67,714CommonSOLE
375558103GILDGILEAD SCIENCES INC$7.1M0.05%92,751CommonSOLE
235851102DHRDANAHER CORPORATION$7.0M0.04%29,294CommonSOLE
592688105MTDMETTLER TOLEDO INTERNATIONAL$7.0M0.04%5,318CommonSOLE
87612E106TGTTARGET CORP$6.4M0.04%48,178CommonSOLE
427866108HSYHERSHEY CO$6.2M0.04%24,943CommonSOLE
624756102MLIMUELLER INDS INC$6.0M0.04%68,960CommonSOLE
231021106CMICUMMINS INC$5.9M0.04%24,113CommonSOLE
060505104BACBANK AMERICA CORP$5.7M0.04%199,496CommonSOLE
29472R108ELSEQUITY LIFESTYLE PPTYS INC$5.6M0.04%84,195CommonSOLE
911312106UPSUNITED PARCEL SERVICE INC$5.5M0.04%30,883CommonSOLE
19239V302CCOICOGENT COMMUNICATIONS HLDGS$5.5M0.03%81,687CommonSOLE
172908105CTASCINTAS CORP$5.2M0.03%10,375CommonSOLE
892356106TSCOTRACTOR SUPPLY CO$5.1M0.03%23,276CommonSOLE
580135101MCDMCDONALDS CORP$5.1M0.03%17,177CommonSOLE
366651107ITGARTNER INC$5.0M0.03%14,370CommonSOLE
032654105ADIANALOG DEVICES INC$5.0M0.03%25,571CommonSOLE
887389104TKRTIMKEN CO$4.4M0.03%47,820CommonSOLE
754730109RJFRAYMOND JAMES FINL INC$4.2M0.03%40,095CommonSOLE
12572Q105CMECME GROUP INC$4.1M0.03%22,012CommonSOLE
452308109ITWILLINOIS TOOL WKS INC$4.0M0.03%15,982CommonSOLE
166764100CVXCHEVRON CORP NEW$3.7M0.02%23,792CommonSOLE
088606108BHPBHP GROUP LTD$3.4M0.02%57,716CommonSOLE
827048109SLGNSILGAN HLDGS INC$2.9M0.02%61,079CommonSOLE
422806208HEI/AHEICO CORP NEW$2.8M0.02%20,130CommonSOLE
879360105TDYTELEDYNE TECHNOLOGIES INC$2.0M0.01%4,882CommonSOLE
75321W103PACKRANPAK HOLDINGS CORP$1.8M0.01%402,200CommonSOLE
82706C108SIMOSILICON MOTION TECHNOLOGY CO$1.7M0.01%23,670CommonSOLE
163072101CAKECHEESECAKE FACTORY INC$1.4M0.01%41,072CommonSOLE
126408103CSXCSX CORP$974,9190.01%28,590CommonSOLE
48576A100KARUNA THERAPEUTICS INC$958,4770.01%4,420CommonSOLE
969457100WMBWILLIAMS COS INC$761,2580.00%23,330CommonSOLE
05478C105AZEKAZEK CO INC$681,8280.00%22,510CommonSOLE
89832Q109TFCTRUIST FINL CORP$659,2020.00%21,720CommonSOLE
29084Q100EMEEMCOR GROUP INC$654,1210.00%3,540CommonSOLE
461202103INTUINTUIT$646,0480.00%1,410CommonSOLE
20825C104COPCONOCOPHILLIPS$625,8040.00%6,040CommonSOLE
09857L108BKNGBOOKING HOLDINGS INC$567,0690.00%210CommonSOLE
88146M101TRNOTERRENO RLTY CORP$531,2840.00%8,840CommonSOLE
025932104AFGAMERICAN FINL GROUP INC OHIO$503,7380.00%4,242CommonSOLE
302301106EZPWEZCORP INC$500,9560.00%59,780CommonSOLE
339750101FNDFLOOR & DECOR HLDGS INC$467,8200.00%4,500CommonSOLE
679580100ODFLOLD DOMINION FREIGHT LINE IN$461,8180.00%1,249CommonSOLE
63008G203NNDMNANO DIMENSION LTD$430,8120.00%149,070CommonSOLE
637870106NSANATIONAL STORAGE AFFILIATES$273,7640.00%7,860CommonSOLE

Source: SEC EDGAR · raw 13F holdings as filed. The Class column shows the option type when reported (Put/Call) or Common when the issuer's equity is held directly. 13F discloses long positions only.