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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NETFLIX INC

NFLX|64110L106

213903(+6.8%)

Value:

$199.5B(+11.7%)

CHECK POINT SOFTWARE TECHNOLOGIES LTD

CHKP|M22465104

864717(+214.6%)

Value:

$197.1B(+284.0%)

Vertiv Holdings Co

VRT|92537N108

2377572(-36.1%)

Value:

$171.7B(-59.4%)

CASELLA WASTE SYSTEMS INC

CWST|147448104

1507843(-0.8%)

Value:

$168.1B(+4.5%)

DEXCOM INC

DXCM|252131107

2447743(+4.3%)

Value:

$167.2B(-8.4%)

Ares Management Corp

ARES|03990B101

1128415(+18.3%)

Value:

$165.4B(-2.0%)

monday.com Ltd.

MNDY|M7S64H106

665164(-4.7%)

Value:

$161.7B(-1.6%)

Palantir Technologies Inc.

PLTR|69608A108

1898437(-0.6%)

Value:

$160.2B(+11.0%)

GE Vernova Inc.

GEV|36828A101

512767(-16.2%)

Value:

$156.5B(-22.2%)

Atlassian Corp

TEAM|049468101

736388(+15.5%)

Value:

$156.3B(+0.7%)

Lantheus Holdings, Inc.

LNTH|516544103

1589145(+2.2%)

Value:

$155.1B(+11.5%)

BRINKER INTERNATIONAL, INC

EAT|109641100

995713(+102.0%)

Value:

$148.4B(+127.6%)

Howmet Aerospace Inc.

HWM|443201108

1135059

Value:

$147.3B

Option Care Health, Inc.

OPCH|68404L201

4144537(-43.0%)

Value:

$144.9B(-14.1%)

INSULET CORP

PODD|45784P101

538247(-12.9%)

Value:

$141.3B(-12.4%)

DraftKings Inc.

DKNG|26142V105

4225024(+0.0%)

Value:

$140.3B(-10.7%)

COSTCO WHOLESALE CORP /NEW

COST|22160K105

148156(-0.2%)

Value:

$140.1B(+3.0%)

BANK OF AMERICA CORP /DE/

BAC|060505104

3344496(+52.4%)

Value:

$139.6B(+44.7%)

Dynatrace, Inc.

DT|268150109

2910553(+2.2%)

Value:

$137.2B(-11.4%)

Samsara Inc.

IOT|79589L106

3523390(-2.2%)

Value:

$135.1B(-14.2%)

Instrument	Shares		Other Manager	Value
Netflix Inc(NFLXcusip64110L106)	213.9K	QoQ +6.76% (+13.6K) YoY NEW(+213.9K)	All Managers (Combined)	$199.5M	QoQ +11.70% (+$20.9M) YoY NEW(+$199.5M)
Check Point Software Technologies Ltd(CHKPcusipM22465104)	864.7K	QoQ +214.55% (+589.8K) YoY NEW(+864.7K)	All Managers (Combined)	$197.1M	QoQ +284.00% (+$145.8M) YoY NEW(+$197.1M)
Vertiv Holdings Co(VRTcusip92537N108)	2.4M	QoQ -36.08% (-1.3M) YoY -30.05% (-1.0M)	All Managers (Combined)	$171.7M	QoQ -59.38% (-$251.0M) YoY -38.16% (-$106.0M)
Casella Waste Systems Inc(CWSTcusip147448104)	1.5M	QoQ -0.81% (-12.5K) YoY +77.80% (+659.8K)	All Managers (Combined)	$168.1M	QoQ +4.52% (-$7.3M) YoY +100.54% (+$84.3M)
Dexcom Inc(DXCMcusip252131107)	2.4M	QoQ +4.35% (-102.1K) YoY +59.00% (-908.3K)	All Managers (Combined)	$167.2M	QoQ -8.36% (-$15.3M) YoY -21.71% (-$46.4M)
Ares Management Corp(AREScusip03990B101)	1.1M	QoQ +18.31% (-174.6K) YoY +73.77% (+479.1K)	All Managers (Combined)	$165.4M	QoQ -2.01% (-$3.4M) YoY +91.58% (+$79.1M)
Monday.Com Ltd.(MNDYcusipM7S64H106)	665.2K	QoQ -4.69% (-32.7K) YoY +60.05% (+249.6K)	All Managers (Combined)	$161.7M	QoQ -1.56% (-$2.6M) YoY +72.30% (+$67.9M)
Palantir Technologies Inc.(PLTRcusip69608A108)	1.9M	QoQ -0.55% (-10.5K) YoY NEW(+1.9M)	All Managers (Combined)	$160.2M	QoQ +10.97% (-$15.9M) YoY NEW(+$160.2M)
Ge Vernova Inc.(GEVcusip36828A101)	512.8K	QoQ -16.18% (-99.0K) YoY NEW(+512.8K)	All Managers (Combined)	$156.5M	QoQ -22.21% (-$44.7M) YoY NEW(+$156.5M)
Atlassian Corp(TEAMcusip049468101)	736.4K	QoQ +15.46% (+98.6K) YoY NEW(+736.4K)	All Managers (Combined)	$156.3M	QoQ +0.67% (+$1.0M) YoY NEW(+$156.3M)
Lantheus Holdings, Inc.(LNTHcusip516544103)	1.6M	QoQ +2.18% (+34.1K) YoY -18.83% (-368.9K)	All Managers (Combined)	$155.1M	QoQ +11.48% (+$16.0M) YoY +27.27% (-$33.2M)
Brinker International, Inc(EATcusip109641100)	995.7K	QoQ +102.04% (+502.9K) YoY NEW(+995.7K)	All Managers (Combined)	$148.4M	QoQ +127.64% (+$83.2M) YoY NEW(+$148.4M)
Howmet Aerospace Inc.(HWMcusip443201108)	1.1M	QoQ NEW(+1.1M) YoY NEW(+1.1M)	All Managers (Combined)	$147.3M	QoQ NEW(+$147.3M) YoY NEW(+$147.3M)
Option Care Health, Inc.(OPCHcusip68404L201)	4.1M	QoQ -42.95% (-3.1M) YoY -19.85% (-1.0M)	All Managers (Combined)	$144.9M	QoQ -14.06% (-$23.7M) YoY -16.48% (-$28.6M)
Insulet Corp(PODDcusip45784P101)	538.2K	QoQ -12.87% (-79.5K) YoY +14.93% (+69.9K)	All Managers (Combined)	$141.3M	QoQ -12.36% (-$19.9M) YoY +76.09% (+$61.1M)
Draftkings Inc.(DKNGcusip26142V105)	4.2M	QoQ +0.04% (-2.0K) YoY +110.45% (+2.2M)	All Managers (Combined)	$140.3M	QoQ -10.68% (-$16.8M) YoY +53.91% (+$49.1M)
Costco Wholesale Corp /New(COSTcusip22160K105)	148.2K	QoQ -0.24% (-358) YoY -12.46% (-21.1K)	All Managers (Combined)	$140.1M	QoQ +2.97% (-$4.0M) YoY +13.00% (-$16.1M)
Bank Of America Corp /De/(BACcusip060505104)	3.3M	QoQ +52.43% (+1.2M) YoY +1356.73% (+3.1M)	All Managers (Combined)	$139.6M	QoQ +44.73% (+$43.1M) YoY +1503.10% (+$130.9M)
Dynatrace, Inc.(DTcusip268150109)	2.9M	QoQ +2.17% (-62.0K) YoY +51.32% (+987.1K)	All Managers (Combined)	$137.2M	QoQ -11.36% (-$17.6M) YoY +53.63% (+$47.9M)
Samsara Inc.(IOTcusip79589L106)	3.5M	QoQ -2.22% (-80.2K) YoY +58.08% (+1.3M)	All Managers (Combined)	$135.1M	QoQ -14.22% (-$22.4M) YoY +60.34% (+$50.8M)