Westfield Capital Management Co LP

Filing Details

13F-HR • 2025-03-31

SEC FilingSEC DataHachi Filing

Report Date: 2025-03-31
Filing Date: 2025-05-09
Total Holdings: 244
Total Value: 20549795430
Accession Number: 0001085146-25-002864
Form Type: 13F-HR
CIK: 0001177719
Manager Name: Westfield Capital Management Co LP

Data Enrichment

99% identified

241 identified3 unidentified

Holdings

SEC FilingSEC DataHachi Filing

Manager:

244 positions • $20,549,795.43K total value

244 positions

Manager:

SEC FilingSEC DataHachi Filing

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Datadog, Inc.

DDOG|23804L103

640549(+13.1%)

Value:

$63.5B(-21.5%)

ICON PLC

ICLR|G4705A100

361912(-40.0%)

Value:

$63.3B(-49.9%)

Merus N.V.

MRUS|N5749R100

1501220(+51.1%)

Value:

$63.2B(+51.3%)

Okta, Inc.

OKTA|679295105

578946(-27.9%)

Value:

$60.9B(-3.7%)

SentinelOne, Inc.

S|81730H109

3286406(-0.3%)

Value:

$59.7B(-18.3%)

Wix.com Ltd.

WIX|M98068105

364332(+43.7%)

Value:

$59.5B(+9.4%)

Vulcan Materials CO

VMC|929160109

254781(-9.1%)

Value:

$59.4B(-17.5%)

Red Rock Resorts, Inc.

RRR|75700L108

1360609(+0.1%)

Value:

$59.0B(-6.1%)

Robinhood Markets, Inc.

HOOD|770700102

1415103

Value:

$58.9B

Hilton Worldwide Holdings Inc.

HLT|43300A203

251474(-0.7%)

Value:

$57.2B(-8.6%)

ROCKWELL AUTOMATION, INC

ROK|773903109

219860(-0.7%)

Value:

$56.8B(-10.2%)

Axalta Coating Systems Ltd.

AXTA|G0750C108

1712448(-27.1%)

Value:

$56.8B(-29.3%)

RAMBUS INC

RMBS|750917106

1089081(-21.6%)

Value:

$56.4B(-23.2%)

COPART INC

CPRT|217204106

991920(-0.7%)

Value:

$56.1B(-2.1%)

MoonLake Immunotherapeutics

MLTX|61559X104

1434770(+9.4%)

Value:

$56.1B(-21.1%)

Diamondback Energy, Inc.

FANG|25278X109

344596(+16.5%)

Value:

$55.1B(+13.7%)

AVIENT CORP

AVNT|05368V106

1475318(-13.8%)

Value:

$54.8B(-21.6%)

Braze, Inc.

BRZE|10576N102

1514513

Value:

$54.6B

Mueller Water Products, Inc.

MWA|624758108

2118561

Value:

$53.9B

LAM RESEARCH CORP

LRCX|512807306

736520(-41.4%)

Value:

$53.5B(-41.0%)

Instrument	Shares		Other Manager	Value
Datadog, Inc.(DDOGcusip23804L103)	640.5K	QoQ +13.08% (-74.1K) YoY +28.21% (+141.0K)	All Managers (Combined)	$63.5M	QoQ -21.48% (-$17.4M) YoY +2.91% (+$1.8M)
Icon Plc(ICLRcusipG4705A100)	361.9K	QoQ -39.98% (-241.1K) YoY -32.59% (-175.0K)	All Managers (Combined)	$63.3M	QoQ -49.91% (-$63.1M) YoY -64.88% (-$117.0M)
Merus N.V.(MRUScusipN5749R100)	1.5M	QoQ +51.15% (+508.1K) YoY NEW(+1.5M)	All Managers (Combined)	$63.2M	QoQ +51.30% (+$21.4M) YoY NEW(+$63.2M)
Okta, Inc.(OKTAcusip679295105)	578.9K	QoQ -27.85% (-223.5K) YoY NEW(+578.9K)	All Managers (Combined)	$60.9M	QoQ -3.66% (-$2.3M) YoY NEW(+$60.9M)
Sentinelone, Inc.(Scusip81730H109)	3.3M	QoQ -0.25% (-8.3K) YoY NEW(+3.3M)	All Managers (Combined)	$59.7M	QoQ -18.31% (-$13.4M) YoY NEW(+$59.7M)
Wix.Com Ltd.(WIXcusipM98068105)	364.3K	QoQ +43.66% (+110.7K) YoY NEW(+364.3K)	All Managers (Combined)	$59.5M	QoQ +9.40% (+$5.1M) YoY NEW(+$59.5M)
Vulcan Materials Co(VMCcusip929160109)	254.8K	QoQ -9.07% (-25.4K) YoY -18.17% (-56.6K)	All Managers (Combined)	$59.4M	QoQ -17.53% (-$12.6M) YoY -30.05% (-$25.5M)
Red Rock Resorts, Inc.(RRRcusip75700L108)	1.4M	QoQ +0.10% (-1.4K) YoY +2.44% (-32.4K)	All Managers (Combined)	$59.0M	QoQ -6.10% (-$3.8M) YoY -25.73% (-$20.4M)
Robinhood Markets, Inc.(HOODcusip770700102)	1.4M	QoQ NEW(+1.4M) YoY NEW(+1.4M)	All Managers (Combined)	$58.9M	QoQ NEW(+$58.9M) YoY NEW(+$58.9M)
Hilton Worldwide Holdings Inc.(HLTcusip43300A203)	251.5K	QoQ -0.67% (-1.7K) YoY -33.65% (-127.6K)	All Managers (Combined)	$57.2M	QoQ -8.55% (-$5.4M) YoY -29.23% (-$23.6M)
Rockwell Automation, Inc(ROKcusip773903109)	219.9K	QoQ -0.67% (-1.5K) YoY -27.76% (-84.5K)	All Managers (Combined)	$56.8M	QoQ -10.19% (-$6.5M) YoY -35.93% (-$31.9M)
Axalta Coating Systems Ltd.(AXTAcusipG0750C108)	1.7M	QoQ -27.10% (-636.9K) YoY -8.94% (-168.3K)	All Managers (Combined)	$56.8M	QoQ -29.34% (-$23.6M) YoY -12.17% (-$7.9M)
Rambus Inc(RMBScusip750917106)	1.1M	QoQ -21.62% (-300.5K) YoY +231.98% (+761.0K)	All Managers (Combined)	$56.4M	QoQ -23.23% (-$17.1M) YoY +178.08% (+$36.1M)
Copart Inc(CPRTcusip217204106)	991.9K	QoQ -0.69% (-6.9K) YoY -54.22% (-1.2M)	All Managers (Combined)	$56.1M	QoQ -2.07% (-$1.2M) YoY -55.27% (-$69.4M)
Moonlake Immunotherapeutics(MLTXcusip61559X104)	1.4M	QoQ +9.38% (-123.2K) YoY +57.51% (+523.9K)	All Managers (Combined)	$56.1M	QoQ -21.07% (-$15.0M) YoY +22.51% (+$10.3M)
Diamondback Energy, Inc.(FANGcusip25278X109)	344.6K	QoQ +16.46% (+48.7K) YoY -0.30% (-1.0K)	All Managers (Combined)	$55.1M	QoQ +13.65% (+$6.6M) YoY -19.56% (-$13.4M)
Avient Corp(AVNTcusip05368V106)	1.5M	QoQ -13.81% (-236.4K) YoY +8.50% (-115.6K)	All Managers (Combined)	$54.8M	QoQ -21.61% (-$15.1M) YoY -7.09% (-$4.2M)
Braze, Inc.(BRZEcusip10576N102)	1.5M	QoQ NEW(+1.5M) YoY NEW(+1.5M)	All Managers (Combined)	$54.6M	QoQ NEW(+$54.6M) YoY NEW(+$54.6M)
Mueller Water Products, Inc.(MWAcusip624758108)	2.1M	QoQ NEW(+2.1M) YoY NEW(+2.1M)	All Managers (Combined)	$53.9M	QoQ NEW(+$53.9M) YoY NEW(+$53.9M)
Lam Research Corp(LRCXcusip512807306)	736.5K	QoQ -41.40% (-520.4K) YoY NEW(+736.5K)	All Managers (Combined)	$53.5M	QoQ -41.01% (-$37.2M) YoY NEW(+$53.5M)