EdgeMarket › What Westfield Capital Management Co Lp reported owning

What Westfield Capital Management Co Lp reported owning

As filed on Form 13F for the quarter ending 2026-03-31, up to 45 days after that date. Long-only US-listed equity — shorts, bonds, cash and non-US listings are not on the form, so this is one leg of the book, not the book.

Reported value

23.8B

Positions

250

Quarter

2026-03-31

Shown below

50
largest by value
holdingvalue% of booksharesprice1y
NVDA
NVIDIA CORP
1.1B4.6%6.3M214.72+22.4%
ASND
Ascendis Pharma A/S
1.1B4.6%4.8M253.29+31.4%
FIX
COMFORT SYSTEMS USA INC
856.2M3.6%620.9K1,655.61+143.1%
AAPL
Apple Inc.
795.2M3.3%3.1M309.35+36.9%
FTAI
FTAI Aviation Ltd.
697.8M2.9%2.8M209.70+49.4%
MSFT
MICROSOFT CORP
610.6M2.6%1.6M483.24-4.4%
GOOGL
Alphabet Inc.
582.8M2.4%2.0M344.82+73.0%
HWM
Howmet Aerospace Inc.
527.7M2.2%2.3M271.68+58.0%
VRT
Vertiv Holdings Co
481.5M2.0%1.9M261.95+105.4%
AMZN
AMAZON COM INC
474.8M2.0%2.3M258.63+15.6%
AXON
AXON ENTERPRISE, INC.
451.9M1.9%1.1M627.75-17.5%
AVGO
Broadcom Inc.
382.8M1.6%1.2M368.45+26.5%
LLY
ELI LILLY & Co
335.3M1.4%364.6K1,255.40+78.0%
TPR
TAPESTRY, INC.
310.3M1.3%2.2M130.17+31.7%
META
Meta Platforms, Inc.
301.4M1.3%526.8K549.90-26.5%
LPLA
LPL Financial Holdings Inc.
265.2M1.1%881.5K361.35+1.7%
MKSI
MKS INC
240.6M1.0%1.0M279.11+180.9%
INSM
INSMED Inc
240.1M1.0%1.5M125.77-2.8%
PCVX
Vaxcyte, Inc.
211.9M0.9%3.6M62.62+100.3%
RKLB
Rocket Lab Corp
203.7M0.9%3.2M72.57+78.3%
NFLX
NETFLIX INC
189.4M0.8%2.0M79.59-34.4%
APG
APi Group Corp
187.8M0.8%4.6M41.16+16.2%
PWR
QUANTA SERVICES, INC.
182.2M0.8%331.8K639.34+70.1%
GEV
GE Vernova Inc.
174.0M0.7%199.3K956.85+58.3%
ARES
Ares Management Corp
171.6M0.7%1.6M141.25-21.1%
RYTM
RHYTHM PHARMACEUTICALS, INC.
167.8M0.7%1.9M110.00+11.4%
TSM
TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD
166.8M0.7%493.5K418.95+83.3%
MRVL
Marvell Technology, Inc.
165.7M0.7%1.7M237.04+232.8%
BE
Bloom Energy Corp
161.4M0.7%1.2M201.45+352.6%
IOT
Samsara Inc.
160.8M0.7%5.1M39.94+21.0%
AME
AMETEK INC/
159.9M0.7%745.8K239.55+30.7%
PR
Permian Resources Corp
159.5M0.7%7.5M23.75+78.4%
DT
Dynatrace, Inc.
155.7M0.7%4.2M49.30+1.3%
RVMD
Revolution Medicines, Inc.
151.4M0.6%1.6M209.46+479.3%
NTRA
Natera, Inc.
150.9M0.6%754.7K332.03+106.7%
FN
Fabrinet
148.6M0.6%284.9K436.67+55.8%
ABVX
Abivax S.A.
147.3M0.6%1.3M114.95+59.9%
NOW
ServiceNow, Inc.
145.8M0.6%1.4M128.48-27.8%
FTI
TechnipFMC plc
140.6M0.6%2.0M77.45+122.8%
RCL
ROYAL CARIBBEAN CRUISES LTD
139.2M0.6%505.8K292.00-11.3%
HLT
Hilton Worldwide Holdings Inc.
139.1M0.6%457.4K326.63+21.0%
V
VISA INC.
138.0M0.6%456.5K371.04+7.9%
COR
Cencora, Inc.
137.3M0.6%436.9K318.04+4.7%
ITT
ITT INC.
134.0M0.6%703.3K208.10+25.6%
CELH
Celsius Holdings, Inc.
133.7M0.6%3.8M33.36-46.2%
NXT
Nextpower Inc.
133.5M0.6%1.1M86.18+30.3%
LNG
Cheniere Energy, Inc.
130.3M0.5%459.0K277.51+17.6%
AS
Amer Sports, Inc.
129.6M0.5%3.9M32.63-12.2%
RRX
REGAL REXNORD CORP
127.7M0.5%681.7K166.15+14.7%
MSCI
MSCI Inc.
126.0M0.5%233.8K563.49-1.9%

A position that grew quarter on quarter may simply reflect a higher price: if the stock rose 40% and the manager did nothing, the reported value rose 40%. Reading that as accumulation is reading the price back to yourself. More on that →

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