WESTFIELD CAPITAL MANAGEMENT CO LP 13F Holdings

CIK 0001177719

As of Sep 30, 2025, WESTFIELD CAPITAL MANAGEMENT CO LP reported 235 positions worth $23.7B in its SEC Form 13F filing.

Top 25 holdings

SecurityTickerSectorSharesValue% of portfolio
NVIDIA CORPNVDATechnology6,507,165 .2B5.12%
ASCENDIS PHARMA AASNDHealthcare5,259,909 .0B4.41%
MICROSOFT CORPMSFTTechnology1,705,236$883.2M3.72%
APPLE INCAAPLTechnology3,334,545$849.1M3.58%
COMFORT SYSTEMS USA INCFIXIndustrials833,195$687.5M2.90%
META PLATFORMS INCMETACommunication Services767,657$563.8M2.38%
AMAZON.COM INCAMZNEquity2,541,729$558.1M2.35%
ALPHABET INCGOOGLEquity2,244,650$545.7M2.30%
AXON ENTERPRISE INCAXONIndustrials729,152$523.3M2.20%
HOWMET AEROSPACE INCHWMIndustrials2,007,453$393.9M1.66%
BROADCOM INCAVGOTechnology1,166,362$384.8M1.62%
FTAI AVIATION LTDFTAIIndustrials2,130,241$355.5M1.50%
VERTIV HOLDINGS COVRTIndustrials2,247,218$339.0M1.43%
TRANSDIGM GROUP INCTDGIndustrials217,897$287.2M1.21%
TAPESTRY INCTPRConsumer Cyclical2,450,671$277.5M1.17%
NETFLIX INCNFLXCommunication Services230,648$276.5M1.17%
SEMTECH CORPSMTCTechnology3,380,373$241.5M1.02%
VISA INC-CLASS A SHARESVFinancial Services705,767$240.9M1.02%
SERVICENOW INCNOWTechnology260,002$239.3M1.01%
MARVELL TECHNOLOGY INCMRVLTechnology2,611,958$219.6M0.93%
ELI LILLY & COLLYHealthcare277,005$211.4M0.89%
MASIMO CORPMASIHealthcare1,419,250$209.4M0.88%
MERUS NVMRUSHealthcare2,132,489$200.8M0.85%
BANK OF AMERICA CORPBACFinancial Services3,861,103 99.2M0.84%
LEGEND BIOTECH CORPLEGNHealthcare6,094,486 98.7M0.84%