Westfield Capital Management Co LP
Westfield Capital Management Co LP reported 278 holdings worth US$30.6B as of Jun 30, 2026 (Form 13F)
As of Jun 30, 2026 · Filed Aug 12, 2026
Westfield Capital Management Co LP reported 278 holdings worth US$30.6B as of Jun 30, 2026. Largest: Nvidia Corporation, Alphabet Inc (google) Class C and Axon Enterprise, Inc. Filed Aug 12, 2026 (Form 13F).
- Holdings
- 278
- Value as reported
- US$30.6B
The filing in full
| Company | Shares | Value as reported | % of portfolio |
|---|
| Nvidia Corporation | 8.08M | US$1.62B | 5.3% |
| Alphabet Inc (google) Class C | 3.81M | US$1.36B | 4.4% |
| Axon Enterprise, Inc. | 1.49M | US$836M | 2.7% |
| Ftai Aviation Ltd. | 2.94M | US$795M | 2.6% |
| Apple Inc | 2.57M | US$745M | 2.4% |
| Comfort Systems Usa, Inc. | 355K | US$704M | 2.3% |
| Broadcom Inc. | 1.56M | US$588M | 1.9% |
| Microsoft Corp. | 1.41M | US$528M | 1.7% |
| Howmet Aerospace Inc. | 1.92M | US$517M | 1.7% |
| Eli Lilly And Company | 417K | US$500M | 1.6% |
| Snowflake Inc. | 1.74M | US$442M | 1.4% |
| Mks Inc. | 929K | US$413M | 1.3% |
| Meta Platforms, Inc. | 677K | US$382M | 1.2% |
| Vertiv Holdings, Llc | 1.05M | US$353M | 1.2% |
| Ge Vernova Inc. | 241K | US$283M | 0.93% |
| Micron Technology, Inc. | 228K | US$263M | 0.86% |
| Visa Inc. | 762K | US$262M | 0.85% |
| Api Group Corporation | 6.15M | US$261M | 0.85% |
| Tapestry, Inc. | 1.7M | US$248M | 0.81% |
| Rhythm Pharmaceuticals, Inc. | 2.21M | US$245M | 0.80% |
| Life Time Group Holdings, Inc. | 6M | US$245M | 0.80% |
| Taiwan Semiconductor Manufacturing Co., Ltd. | 511K | US$244M | 0.80% |
| Guardant Health, Inc. | 1.62M | US$244M | 0.80% |
| Quanta Services, Inc. | 331K | US$239M | 0.78% |
| Servicenow, Inc. | 2.37M | US$236M | 0.77% |
| Advanced Micro Devices Inc | 403K | US$234M | 0.76% |
| Palo Alto Networks, Inc. | 658K | US$225M | 0.73% |
| Woodward, Inc. | 527K | US$224M | 0.73% |
| Arista Networks, Inc. | 1.32M | US$224M | 0.73% |
| Lpl Financial Holdings Inc. | 793K | US$223M | 0.73% |
| Rocket Lab Corporation | 2.11M | US$215M | 0.70% |
| Amer Sports, Inc. | 6.34M | US$215M | 0.70% |
| Cloudflare, Inc. | 836K | US$205M | 0.67% |
| Amazon.com, Inc. | 860K | US$205M | 0.67% |
| Regal Rexnord Corporation | 857K | US$204M | 0.67% |
| Natera, Inc. | 727K | US$197M | 0.64% |
| Morgan Stanley | 941K | US$197M | 0.64% |
| Carpenter Technology Corporation | 314K | US$194M | 0.63% |
| Samsara Inc. | 5.84M | US$189M | 0.62% |
| Dynatrace, Inc. | 4.25M | US$187M | 0.61% |
| Caterpillar, Inc. | 175K | US$186M | 0.61% |
| Semtech Corporation | 1.13M | US$183M | 0.60% |
| Ametek, Inc. | 724K | US$175M | 0.57% |
| Abivax Sa | 1.31M | US$175M | 0.57% |
| Insmed Incorporated | 1.63M | US$174M | 0.57% |
| Itt Inc. | 830K | US$164M | 0.54% |
| Gilead Sciences, Inc. | 1.29M | US$163M | 0.53% |
| Ptc Therapeutics, Inc. | 1.96M | US$160M | 0.52% |
| Dutch Bros Inc. | 2.18M | US$157M | 0.51% |
| Celsius Holdings, Inc. | 5.32M | US$156M | 0.51% |
| Mastec, Inc. | 374K | US$156M | 0.51% |
| Sharkninja, Inc. | 1.01M | US$154M | 0.50% |
| Csx Corporation | 3.15M | US$150M | 0.49% |
| Firstcash Holdings, Inc. | 693K | US$150M | 0.49% |
| Keycorp | 6.49M | US$150M | 0.49% |
| Microchip Technology Incorporated | 1.64M | US$149M | 0.49% |
| Applied Materials, Inc. | 206K | US$149M | 0.49% |
| Marriott International | 399K | US$148M | 0.48% |
| Vaxcyte, Inc. | 2.47M | US$144M | 0.47% |
| Globe Life Inc. | 771K | US$138M | 0.45% |
| Xpo, Inc. | 629K | US$129M | 0.42% |
| Everpure, Inc. | 1.61M | US$127M | 0.41% |
| Lam Research Corporation | 286K | US$124M | 0.40% |
| Jones Lang Lasalle Incorporated | 398K | US$124M | 0.40% |
| Astera Labs, Inc. | 249K | US$120M | 0.39% |
| Rockwell Automation, Inc. | 237K | US$117M | 0.38% |
| Idex Corporation | 514K | US$117M | 0.38% |
| Coherent Corp. | 291K | US$115M | 0.38% |
| Legence Corp. | 1.34M | US$114M | 0.37% |
| Lincoln Electric Holdings, Inc. | 431K | US$114M | 0.37% |
| Asml Holding Nv | 57,430 | US$114M | 0.37% |
| Planet Labs Pbc | 3.43M | US$114M | 0.37% |
| Onto Innovation Inc. | 299K | US$113M | 0.37% |
| Cencora, Inc. | 400K | US$113M | 0.37% |
| Revolution Medicines, Inc. | 601K | US$113M | 0.37% |
| Sandisk Corporation | 49,024 | US$111M | 0.36% |
| Affirm Holdings, Inc. | 1.35M | US$110M | 0.36% |
| Live Nation Entertainment, Inc. | 591K | US$108M | 0.35% |
| Enpro Inc. | 287K | US$108M | 0.35% |
| Permian Resources Corporation | 5.76M | US$106M | 0.35% |
| Ares Management Corporation | 952K | US$106M | 0.35% |
| Imax Corporation | 2.65M | US$106M | 0.35% |
| Guidewire Software, Inc. | 839K | US$103M | 0.34% |
| Nextpower Inc. | 857K | US$102M | 0.33% |
| Synopsys, Inc. | 227K | US$101M | 0.33% |
| Roku, Inc. | 717K | US$99M | 0.32% |
| Plexus Corp. | 322K | US$96.8M | 0.32% |
| Applied Industrial Technologies, Inc. | 286K | US$96.6M | 0.32% |
| Msci Inc. | 172K | US$96.3M | 0.31% |
| Robinhood Markets, Inc. | 956K | US$95.8M | 0.31% |
| Ross Stores, Inc. | 442K | US$94.2M | 0.31% |
| Adaptive Biotechnologies Corporation | 4.27M | US$91.5M | 0.30% |
| Xenon Pharmaceuticals Inc. | 1.51M | US$91M | 0.30% |
| O'reilly Automotive, Inc. | 933K | US$85.9M | 0.28% |
| Citigroup, Inc. | 608K | US$85.1M | 0.28% |
| Packaging Corporation Of America | 356K | US$84.9M | 0.28% |
| Palomar Holdings, Inc. | 669K | US$84.5M | 0.28% |
| East West Bancorp, Inc. | 650K | US$83.9M | 0.27% |
| Red Rock Resorts, Inc. | 1.26M | US$82.1M | 0.27% |
| Wintrust Financial Corporation | 504K | US$81M | 0.26% |
Every holding of Westfield Capital Management Co LP
Source
View original at SEC
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