WESTFIELD CAPITAL MANAGEMENT CO LP
Institutional investor · Portfolio as of Q4 2023
Top Holdings239 positions
MICROSOFT CORP | 1.6M | $585.8M | 3.4% | $152.16 | +141.98% | 21 qtrssince 2018-Q4 | Increased 67 |
ASCENDIS PHARMA A/S | 4M | $507.7M | 3.0% | $112.34 | +12.11% | 21 qtrssince 2018-Q4 | Increased 57 |
APPLE INC | 2.5M | $480M | 2.8% | $42.46 | +348.02% | 21 qtrssince 2018-Q4 | Decreased 0 |
ALPHABET INC | 3.2M | $453.8M | 2.6% | $60.79 | +127.63% | 21 qtrssince 2018-Q4 | Decreased 0 |
AMAZON COM INC | 2.3M | $354.8M | 2.1% | $91.92 | +65.30% | 21 qtrssince 2018-Q4 | Decreased 0 |
TRANSDIGM GROUP INC | 320,175 | $323.9M | 1.9% | $389.05 | +130.43% | 21 qtrssince 2018-Q4 | Decreased 0 |
NVIDIA CORPORATION | 595,833 | $295.1M | 1.7% | $21.76 | +126.92% | 17 qtrssince 2019-Q4 | Decreased 0 |
VISA INC | 1.1M | $282.8M | 1.6% | $161.47 | +57.94% | 21 qtrssince 2018-Q4 | Decreased 0 |
META PLATFORMS INC | 724,433 | $256.4M | 1.5% | $246.05 | +42.49% | 4 qtrssince 2023-Q1 | Decreased 0 |
BUILDERS FIRSTSOURCE INC | 1.4M | $236.5M | 1.4% | $120.23 | +38.85% | 4 qtrssince 2023-Q1 | Increased 54 |
DEXCOM INC | 1.9M | $230.5M | 1.3% | $99.76 | +24.39% | 21 qtrssince 2018-Q4 | Increased 48 |
UNITEDHEALTH GROUP INC | 435,077 | $229.1M | 1.3% | $481.82 | +2.96% | 10 qtrssince 2021-Q3 | Increased 49 |
SERVICENOW INC | 296,250 | $209.3M | 1.2% | $40.80 | +246.34% | 21 qtrssince 2018-Q4 | Decreased 0 |
AXON ENTERPRISE INC | 731,721 | $189M | 1.1% | $200.46 | +28.87% | 5 qtrssince 2022-Q4 | Increased 51 |
SAIA INC | 376,409 | $164.9M | 1.0% | $175.89 | +149.14% | 14 qtrssince 2020-Q3 | Decreased 0 |
M/I HOMES INC | 1.2M | $163.1M | 1.0% | $93.40 | +47.47% | 2 qtrssince 2023-Q3 | Increased 51 |
AMETEK INC | 979,840 | $161.6M | 0.9% | $68.04 | +138.49% | 21 qtrssince 2018-Q4 | Decreased 0 |
SALESFORCE INC | 608,116 | $160M | 0.9% | $150.60 | +71.76% | 21 qtrssince 2018-Q4 | Increased 46 |
ICON PUB LTD CO | 558,847 | $158.2M | 0.9% | $169.15 | +67.35% | 21 qtrssince 2018-Q4 | Increased 43 |
INSULET CORP | 705,429 | $153.1M | 0.9% | $214.64 | +1.09% | 15 qtrssince 2020-Q2 | Increased 47 |
WESTFIELD CAPITAL MANAGEMENT CO LP manages $17.2B across 239 positions as of Q4 2023. Top holdings: MSFT (3.4%), ASND (3.0%), AAPL (2.8%). Fund DNA: Balanced Allocator. HoldingsIntel Score: 2/5.0.
Active quarter - 35 new positions, 30 exits, 117 increased. Top move: MSFT (INCREASED, conviction 67). Portfolio: $17.2B across 239 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.
Similar Funds
Funds with similar investing DNA
Explore More
Accumulation Streaks
Positions with 2+ consecutive quarters of increases - persistent directional conviction.
Continue exploring
Data sourced from SEC EDGAR 13F filings. Not financial advice. Full disclaimer
Verify source filings on SEC EDGAR