WESTFIELD CAPITAL MANAGEMENT CO LP
Institutional investor · Portfolio as of Q1 2025
Top Holdings244 positions
Stock | Shares | Value | Weight | Avg Buy | Est. P&L | Held | Conviction |
|---|---|---|---|---|---|---|---|
ASCENDIS PHARMA A/S | 5.5M | $854M | 4.2% | $119.23 | +29.73% | 26 qtrssince 2018-Q4 | Decreased 0 |
NVIDIA CORP | 7.3M | $795.1M | 3.9% | $115.62 | -5.16% | 22 qtrssince 2019-Q4 | Decreased 0 |
APPLE INC | 3.4M | $755.5M | 3.7% | $126.32 | +74.77% | 26 qtrssince 2018-Q4 | Decreased 0 |
MICROSOFT CORP | 1.8M | $687.9M | 3.3% | $211.16 | +78.44% | 26 qtrssince 2018-Q4 | Decreased 0 |
AMAZON.COM INC | 3.5M | $658.8M | 3.2% | $137.14 | +40.53% | 26 qtrssince 2018-Q4 | Increased 58 |
ALPHABET INC-CL A | 3.5M | $535M | 2.6% | $109.55 | +40.49% | 26 qtrssince 2018-Q4 | Decreased 0 |
META PLATFORMS INC-CLASS A | 898,538 | $517.9M | 2.5% | $305.10 | +88.61% | 9 qtrssince 2023-Q1 | Decreased 0 |
AXON ENTERPRISE INC | 927,801 | $488M | 2.4% | $312.64 | +68.23% | 10 qtrssince 2022-Q4 | Increased 68 |
TRANSDIGM GROUP INC | 316,162 | $437.3M | 2.1% | $506.55 | +154.38% | 26 qtrssince 2018-Q4 | Decreased 0 |
VISA INC-CLASS A SHARES | 904,397 | $317M | 1.5% | $164.65 | +110.44% | 26 qtrssince 2018-Q4 | Increased 49 |
COMFORT SYSTEMS USA INC | 889,639 | $286.8M | 1.4% | $290.43 | +10.57% | 6 qtrssince 2023-Q4 | Increased 49 |
LPL FINANCIAL HOLDINGS INC | 830,099 | $271.6M | 1.3% | $199.46 | +63.16% | 26 qtrssince 2018-Q4 | Increased 57 |
SERVICENOW INC | 320,284 | $255M | 1.2% | $67.62 | +135.94% | 26 qtrssince 2018-Q4 | Increased 49 |
TAPESTRY INC | 3.6M | $253.6M | 1.2% | $52.56 | +32.10% | 17 qtrssince 2021-Q1 | Decreased 0 |
Legend Biotech Corp. Sponsored ADR | 6.9M | $234.7M | 1.1% | $48.73 | -28.06% | 8 qtrssince 2023-Q2 | Increased 58 |
BROADCOM INC | 1.4M | $234.1M | 1.1% | $175.32 | -5.42% | 26 qtrssince 2018-Q4 | Increased 50 |
ELI LILLY & CO | 258,952 | $213.9M | 1.0% | $728.67 | +12.16% | 12 qtrssince 2022-Q2 | Increased 56 |
FTAI AVIATION LTD | 1.9M | $210.1M | 1.0% | $123.86 | -11.47% | 4 qtrssince 2024-Q2 | Decreased 0 |
SALESFORCE.COM INC | 782,929 | $210.1M | 1.0% | $211.05 | +27.09% | 26 qtrssince 2018-Q4 | Increased 61 |
PROGRESSIVE CORP | 712,249 | $201.6M | 1.0% | $140.78 | +86.04% | 12 qtrssince 2022-Q2 | Decreased 0 |
WESTFIELD CAPITAL MANAGEMENT CO LP manages $20.5B across 244 positions as of Q1 2025. Top holdings: ASND (4.2%), NVDA (3.9%), AAPL (3.7%). Fund DNA: Balanced Allocator. HoldingsIntel Rating: 3/5.0.
Active quarter - 46 new positions, 41 exits, 76 increased. Top move: AXON (INCREASED, conviction 68). Portfolio: $20.5B 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