WESTFIELD CAPITAL MANAGEMENT CO LP
Institutional investor · Portfolio as of Q1 2024
Top Holdings244 positions
Stock | Shares | Value | Weight | Avg Buy | Est. P&L | Held | Conviction |
|---|---|---|---|---|---|---|---|
MICROSOFT CORP | 1.5M | $640.7M | 3.4% | $152.62 | +172.12% | 22 qtrssince 2018-Q4 | Decreased 0 |
ASCENDIS PHARMA A/S | 4.1M | $616.1M | 3.2% | $112.76 | +34.06% | 22 qtrssince 2018-Q4 | Increased 58 |
APPLE INC | 3.2M | $555.1M | 2.9% | $111.70 | +51.86% | 22 qtrssince 2018-Q4 | Increased 68 |
NVIDIA CORP | 599,967 | $542.1M | 2.8% | $25.81 | +249.95% | 18 qtrssince 2019-Q4 | Increased 54 |
AMAZON.COM INC | 2.6M | $475M | 2.5% | $119.46 | +51.00% | 22 qtrssince 2018-Q4 | Increased 60 |
ALPHABET INC-CL A | 3M | $446.2M | 2.3% | $96.15 | +55.79% | 22 qtrssince 2018-Q4 | Decreased 0 |
TRANSDIGM GROUP INC | 315,374 | $388.4M | 2.0% | $391.04 | +179.11% | 22 qtrssince 2018-Q4 | Decreased 0 |
META PLATFORMS INC-CLASS A | 702,584 | $341.2M | 1.8% | $242.04 | +99.44% | 5 qtrssince 2023-Q1 | Decreased 0 |
BUILDERS FIRSTSOURCE INC | 1.4M | $288.1M | 1.5% | $119.30 | +74.80% | 5 qtrssince 2023-Q1 | Decreased 0 |
VISA INC-CLASS A SHARES | 1M | $284.7M | 1.5% | $161.47 | +69.62% | 22 qtrssince 2018-Q4 | Decreased 0 |
VERTIV HOLDINGS CO-A | 3.4M | $277.6M | 1.5% | $59.37 | +37.25% | 3 qtrssince 2023-Q3 | Increased 75 |
AXON ENTERPRISE INC | 709,306 | $221.9M | 1.2% | $200.70 | +55.90% | 6 qtrssince 2022-Q4 | Decreased 0 |
SERVICENOW INC | 281,388 | $214.5M | 1.1% | $41.19 | +270.20% | 22 qtrssince 2018-Q4 | Decreased 0 |
DEXCOM INC | 1.5M | $213.5M | 1.1% | $88.26 | +57.15% | 22 qtrssince 2018-Q4 | Decreased 0 |
COMFORT SYSTEMS USA INC | 667,036 | $211.9M | 1.1% | $244.10 | +29.17% | 2 qtrssince 2023-Q4 | Increased 68 |
UNITEDHEALTH GROUP INC | 426,637 | $211.1M | 1.1% | $491.26 | -2.85% | 11 qtrssince 2021-Q3 | Decreased 0 |
ICON PLC | 536,883 | $180.4M | 0.9% | $169.15 | +98.61% | 22 qtrssince 2018-Q4 | Decreased 0 |
SALESFORCE.COM INC | 590,564 | $177.9M | 0.9% | $149.29 | +99.58% | 22 qtrssince 2018-Q4 | Decreased 0 |
AMETEK INC | 953,603 | $174.4M | 0.9% | $68.04 | +164.95% | 22 qtrssince 2018-Q4 | Decreased 0 |
OPTION CARE HEALTH INC | 5.2M | $173.4M | 0.9% | $29.95 | +11.98% | 12 qtrssince 2021-Q2 | Increased 49 |
WESTFIELD CAPITAL MANAGEMENT CO LP manages $19B across 244 positions as of Q1 2024. Top holdings: MSFT (3.4%), ASND (3.2%), AAPL (2.9%). Fund DNA: Balanced Allocator. HoldingsIntel Rating: 3/5.0.
Active quarter - 31 new positions, 26 exits, 84 increased. Top move: VRT (INCREASED, conviction 75). Portfolio: $19.0B across 244 positions.
Top holdings by portfolio weight
Portfolio allocation by GICS sector
Behavioral investing profile
Position Outcomes
Best and worst performing positions by estimated return
Top Winners
Top Losers
Cost basis estimates based on full filing history using quarter-end prices. Actual transaction prices are not disclosed in 13F filings.
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Data sourced from SEC EDGAR 13F filings. Not financial advice. Full disclaimer