WESTFIELD CAPITAL MANAGEMENT CO LP Q1 2021 Filing

Filed May 14, 2021

Portfolio Value

$16.1T

Holdings

243

Report Date

Q1 2021

Filing Type

13F-HR

All Holdings (243 positions)

#StockSharesValue% PortfolioType
1
AAPLAPPLE INC
4,605,664$562.6B3.50%
2
AMZNAMAZON COM INC
160,867$497.7B3.09%
3
GOOGLALPHABET INC
198,625$409.7B2.55%
4
MSFTMICROSOFT CORP
1,733,236$408.6B2.54%
5
METAFACEBOOK INC
1,038,082$305.7B1.90%
6
ICLRICON PLC
1,502,334$295.0B1.83%
7
ZEN1EURZENDESK INC
2,179,679$289.1B1.80%
8
ASNDASCENDIS PHARMA A/S
1,867,693$240.7B1.50%
9
VVISA INC
1,114,335$235.9B1.47%
10
BUWABIO RAD LABS INC
404,467$231.0B1.44%
11
T7DTRANSDIGM GROUP INC
376,213$221.2B1.37%
12
DRIDARDEN RESTAURANTS INC
1,334,426$189.5B1.18%
13
NOWSERVICENOW INC
368,376$184.2B1.14%
14
AMEAMETEK INC
1,382,329$176.6B1.10%
15
WMSADVANCED DRAIN SYS INC DEL
1,705,181$176.3B1.10%
16
CRMSALESFORCE COM INC
826,578$175.1B1.09%
17
TTTRANE TECHNOLOGIES PLC
1,033,389$171.1B1.06%
18
WDAYWORKDAY INC
684,223$170.0B1.06%
19
FTNTFORTINET INC
892,412$164.6B1.02%
20
TMOTHERMO FISHER SCIENTIFIC INC
360,530$164.5B1.02%
21
UNPUNION PAC CORP
722,382$159.2B0.99%
22
PYPLPAYPAL HLDGS INC
634,813$154.2B0.96%
23
ABBVABBVIE INC
1,397,294$151.2B0.94%
24
PODDINSULET CORP
579,278$151.1B0.94%
25
HUMHUMANA INC
354,778$148.7B0.92%
26
TREXTREX CO INC
1,610,393$147.4B0.92%
27
CECELANESE CORP DEL
979,949$146.8B0.91%
28
GPNGLOBAL PMTS INC
719,431$145.0B0.90%
29
NKENIKE INC
1,017,975$135.3B0.84%
30
HUBSHUBSPOT INC
295,908$134.4B0.84%
31
NVDANVIDIA CORPORATION
248,743$132.8B0.83%
32
EYENATIONAL VISION HLDGS INC
2,981,152$130.7B0.81%
33
DWDMORGAN STANLEY
1,666,712$129.4B0.80%
34
AVGOBROADCOM INC
271,691$126.0B0.78%
35
TDYTELEDYNE TECHNOLOGIES INC
296,321$122.6B0.76%
36
LPLALPL FINL HLDGS INC
847,913$120.5B0.75%
37
BLDTOPBUILD CORP
569,530$119.3B0.74%
38
MTDMETTLER TOLEDO INTERNATIONAL
102,885$118.9B0.74%
39
BSXBOSTON SCIENTIFIC CORP
3,071,619$118.7B0.74%
40
STESTERIS PLC
621,633$118.4B0.74%
41
COSTCOSTCO WHSL CORP NEW
335,867$118.4B0.74%
42
HXLHEXCEL CORP NEW
2,065,638$115.7B0.72%
43
ZNGAEURZYNGA INC
11,327,978$115.7B0.72%
44
XLRNACCELERON PHARMA INC
839,273$113.8B0.71%
45
FISFIDELITY NATL INFORMATION SV
787,507$110.7B0.69%
46
2L9BLUEPRINT MEDICINES CORP
1,128,487$109.7B0.68%
47
ETSYETSY INC
538,762$108.7B0.68%
48
NSYNICE LTD
486,714$106.1B0.66%
49
AMATAPPLIED MATLS INC
793,577$106.0B0.66%
50
DOOBRP INC
1,216,762$105.8B0.66%
51
IEXIDEX CORP
504,042$105.5B0.66%
52
IDXXIDEXX LABS INC
210,254$102.9B0.64%
53
FIVEFIVE BELOW INC
537,885$102.6B0.64%
54
CSCOCISCO SYS INC
1,980,806$102.4B0.64%
55
TRUTRANSUNION
1,076,795$96.9B0.60%
56
DC4DEXCOM INC
263,950$94.9B0.59%
57
CMGCHIPOTLE MEXICAN GRILL INC
66,540$94.5B0.59%
58
VYXNCR CORP NEW
2,429,209$92.2B0.57%
59
NUANEURNUANCE COMMUNICATIONS INC
2,080,104$90.8B0.56%
60
DYHTARGET CORP
454,898$90.1B0.56%
61
INTUINTUIT
235,113$90.1B0.56%
62
ROKROCKWELL AUTOMATION INC
329,793$87.5B0.54%
63
TWLOTWILIO INC
254,378$86.7B0.54%
64
WEXWEX INC
412,828$86.4B0.54%
65
SIMOSILICON MOTION TECHNOLOGY CO
1,452,093$86.2B0.54%
66
SYFSYNCHRONY FINANCIAL
2,032,878$82.7B0.51%
67
LECOLINCOLN ELEC HLDGS INC
659,519$81.1B0.50%
68
ATKRATKORE INC
1,124,287$80.8B0.50%
69
AFGAMERICAN FINL GROUP INC OHIO
707,935$80.8B0.50%
70
AZEKAZEK CO INC
1,848,236$77.7B0.48%
71
MCHPMICROCHIP TECHNOLOGY INC.
500,016$77.6B0.48%
72
ROSTROSS STORES INC
640,586$76.8B0.48%
73
ESSESSEX PPTY TR INC
281,492$76.5B0.48%
74
CRLCHARLES RIV LABS INTL INC
262,657$76.1B0.47%
75
RCKTROCKET PHARMACEUTICALS INC
1,663,652$73.8B0.46%
76
COOCOOPER COS INC
191,642$73.6B0.46%
77
MSCIMSCI INC
175,380$73.5B0.46%
78
FLT1EURFLEETCOR TECHNOLOGIES INC
272,367$73.2B0.45%
79
AJGGALLAGHER ARTHUR J & CO
577,238$72.0B0.45%
80
SGENUSDSEAGEN INC
518,488$72.0B0.45%
81
TPRTAPESTRY INC
1,731,905$71.4B0.44%
82
LITELUMENTUM HLDGS INC
772,655$70.6B0.44%
83
TEAMATLASSIAN CORP PLC
334,864$70.6B0.44%
84
AFWALIGN TECHNOLOGY INC
126,165$68.3B0.42%
85
CTLTEURCATALENT INC
645,875$68.0B0.42%
86
TSLATESLA INC
99,691$66.6B0.41%
87
CSGPCOSTAR GROUP INC
79,077$65.0B0.40%
88
ULTAULTA BEAUTY INC
209,485$64.8B0.40%
89
STSENSATA TECHNOLOGIES HLDG PL
1,114,044$64.6B0.40%
90
DGXQUEST DIAGNOSTICS INC
502,873$64.5B0.40%
91
DISCAUSDDISCOVERY INC
1,481,051$64.4B0.40%
92
WSMWILLIAMS SONOMA INC
358,802$64.3B0.40%
93
LYFTLYFT INC
1,003,050$63.4B0.39%
94
ITTITT INC
670,922$61.0B0.38%
95
FMCFMC CORP
550,118$60.8B0.38%
96
IRWDIRONWOOD PHARMACEUTICALS INC
5,383,650$60.2B0.37%
97
MKSIMKS INSTRS INC
324,457$60.2B0.37%
98
SRCUSDSPIRIT RLTY CAP INC NEW
1,414,934$60.1B0.37%
99
DEIDOUGLAS EMMETT INC
1,912,787$60.1B0.37%
100
MGMMGM RESORTS INTERNATIONAL
1,578,051$60.0B0.37%
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