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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CYTOKINETICS INC

CYTK|23282W605

1310336(+2.4%)

Value:

$52.7B(-12.5%)

Nextracker Inc.

NXT|65290E101

1243151(+2.8%)

Value:

$52.4B(+18.6%)

GE HealthCare Technologies Inc.

GEHC|36266G107

644607(-0.6%)

Value:

$52.0B(+2.6%)

ALNYLAM PHARMACEUTICALS, INC.

ALNY|02043Q107

192172(-11.1%)

Value:

$51.9B(+2.0%)

WNS (HOLDINGS) LTD

WNS|G98196101

840983

Value:

$51.7B

CSX CORP

CSX|126408103

1753021(-48.0%)

Value:

$51.6B(-52.5%)

HEALTHEQUITY, INC.

HQY|42226A107

563389

Value:

$49.8B

Coinbase Global, Inc.

COIN|19260Q107

288763(-0.5%)

Value:

$49.7B(-31.0%)

NORTHERN OIL & GAS, INC.

NOG|665531307

1636938(+2.3%)

Value:

$49.5B(-16.8%)

Maplebear Inc.

CART|565394103

1219320

Value:

$48.6B

05589G102

1076847(+27.1%)

Value:

$48.1B(+46.5%)

KEYCORP /NEW/

KEY|493267108

2968535(+22.5%)

Value:

$47.5B(+14.2%)

TERADYNE, INC

TER|880770102

574467(+17.8%)

Value:

$47.5B(-22.8%)

MCCORMICK & CO INC

MKC|579780206

571698

Value:

$47.1B

TechnipFMC plc

FTI|G87110105

1483510(-20.9%)

Value:

$47.0B(-13.4%)

APPLIED INDUSTRIAL TECHNOLOGIES INC

AIT|03820C105

208136(+27.8%)

Value:

$46.9B(+20.3%)

WINTRUST FINANCIAL CORP

WTFC|97650W108

415498(+27.6%)

Value:

$46.7B(+15.1%)

Xenon Pharmaceuticals Inc.

XENE|98420N105

1391370(+20.2%)

Value:

$46.7B(+2.9%)

Rocket Lab USA, Inc.

RKLB|773122106

2586532(+2.6%)

Value:

$46.2B(-28.0%)

HOULIHAN LOKEY, INC.

HLI|441593100

286288

Value:

$46.2B

Instrument	Shares		Other Manager	Value
Cytokinetics Inc(CYTKcusip23282W605)	1.3M	QoQ +2.37% (-30.3K) YoY +79.15% (+579.0K)	All Managers (Combined)	$52.7M	QoQ -12.53% (-$7.5M) YoY +2.70% (+$1.4M)
Nextracker Inc.(NXTcusip65290E101)	1.2M	QoQ +2.77% (+33.5K) YoY +54.91% (+440.7K)	All Managers (Combined)	$52.4M	QoQ +18.55% (+$8.2M) YoY +16.01% (+$7.2M)
Ge Healthcare Technologies Inc.(GEHCcusip36266G107)	644.6K	QoQ -0.56% (-3.7K) YoY -1.68% (-11.0K)	All Managers (Combined)	$52.0M	QoQ +2.64% (-$1.3M) YoY -12.71% (-$7.6M)
Alnylam Pharmaceuticals, Inc.(ALNYcusip02043Q107)	192.2K	QoQ -11.08% (-24.0K) YoY NEW(+192.2K)	All Managers (Combined)	$51.9M	QoQ +2.03% (-$1.0M) YoY NEW(+$51.9M)
Wns (Holdings) Ltd(WNScusipG98196101)	841.0K	QoQ NEW(+841.0K) YoY -28.14% (-329.4K)	All Managers (Combined)	$51.7M	QoQ NEW(+$51.7M) YoY -12.56% (-$7.4M)
Csx Corp(CSXcusip126408103)	1.8M	QoQ -47.97% (-1.6M) YoY +6031.58% (+1.7M)	All Managers (Combined)	$51.6M	QoQ -52.54% (-$57.1M) YoY +4767.89% (+$50.5M)
Healthequity, Inc.(HQYcusip42226A107)	563.4K	QoQ NEW(+563.4K) YoY NEW(+563.4K)	All Managers (Combined)	$49.8M	QoQ NEW(+$49.8M) YoY NEW(+$49.8M)
Coinbase Global, Inc.(COINcusip19260Q107)	288.8K	QoQ -0.53% (-1.5K) YoY NEW(+288.8K)	All Managers (Combined)	$49.7M	QoQ -31.00% (-$22.3M) YoY NEW(+$49.7M)
Northern Oil & Gas, Inc.(NOGcusip665531307)	1.6M	QoQ +2.28% (-36.5K) YoY -6.44% (-112.8K)	All Managers (Combined)	$49.5M	QoQ -16.79% (-$10.0M) YoY -28.72% (-$19.9M)
Maplebear Inc.(CARTcusip565394103)	1.2M	QoQ NEW(+1.2M) YoY NEW(+1.2M)	All Managers (Combined)	$48.6M	QoQ NEW(+$48.6M) YoY NEW(+$48.6M)
(cusip05589G102)✕	1.1M	QoQ +27.06% (+229.4K) YoY NEW(+1.1M)	All Managers (Combined)	$48.1M	QoQ +46.50% (+$15.3M) YoY NEW(+$48.1M)
Keycorp /New/(KEYcusip493267108)	3.0M	QoQ +22.46% (+544.5K) YoY +9.50% (+257.8K)	All Managers (Combined)	$47.5M	QoQ +14.24% (+$5.9M) YoY +10.75% (+$4.6M)
Teradyne, Inc(TERcusip880770102)	574.5K	QoQ +17.75% (-86.6K) YoY NEW(+574.5K)	All Managers (Combined)	$47.5M	QoQ -22.75% (-$14.0M) YoY NEW(+$47.5M)
Mccormick & Co Inc(MKCcusip579780206)	571.7K	QoQ NEW(+571.7K) YoY NEW(+571.7K)	All Managers (Combined)	$47.1M	QoQ NEW(+$47.1M) YoY NEW(+$47.1M)
Technipfmc Plc(FTIcusipG87110105)	1.5M	QoQ -20.91% (-392.4K) YoY NEW(+1.5M)	All Managers (Combined)	$47.0M	QoQ -13.40% (-$7.3M) YoY NEW(+$47.0M)
Applied Industrial Technologies Inc(AITcusip03820C105)	208.1K	QoQ +27.82% (+45.3K) YoY NEW(+208.1K)	All Managers (Combined)	$46.9M	QoQ +20.28% (+$7.9M) YoY NEW(+$46.9M)
Wintrust Financial Corp(WTFCcusip97650W108)	415.5K	QoQ +27.65% (+90.0K) YoY +32.35% (+101.6K)	All Managers (Combined)	$46.7M	QoQ +15.11% (+$6.1M) YoY +42.58% (+$14.0M)
Xenon Pharmaceuticals Inc.(XENEcusip98420N105)	1.4M	QoQ +20.23% (+234.2K) YoY +300.56% (+1.0M)	All Managers (Combined)	$46.7M	QoQ +2.90% (+$1.3M) YoY +212.17% (+$31.7M)
Rocket Lab Usa, Inc.(RKLBcusip773122106)	2.6M	QoQ +2.58% (-65.3K) YoY NEW(+2.6M)	All Managers (Combined)	$46.2M	QoQ -27.98% (-$18.0M) YoY NEW(+$46.2M)
Houlihan Lokey, Inc.(HLIcusip441593100)	286.3K	QoQ NEW(+286.3K) YoY NEW(+286.3K)	All Managers (Combined)	$46.2M	QoQ NEW(+$46.2M) YoY NEW(+$46.2M)