FRONTIER CAPITAL MANAGEMENT CO LLC
Institutional investor · Portfolio as of Q4 2025
Top Holdings295 positions
Stock | Shares | Value | Weight | Avg Buy | Est. P&L | Held | Conviction |
|---|---|---|---|---|---|---|---|
FTAI AVIATION LTD | 1.3M | $255.2M | 2.7% | $37.46 | +422.55% | 13 qtrssince 2022-Q4 | Decreased 0 |
AMENTUM HOLDINGS, INC. COM | 5.8M | $167.4M | 1.8% | $20.95 | +38.44% | 4 qtrssince 2025-Q1 | Increased 53 |
GRANITE CONSTR INC | 1.3M | $145.1M | 1.5% | $49.00 | +138.02% | 28 qtrssince 2019-Q1 | Decreased 0 |
ATI INC | 1.2M | $140.9M | 1.5% | $29.84 | +284.65% | 28 qtrssince 2019-Q1 | Decreased 0 |
MONGODB INC | 302,093 | $126.8M | 1.3% | $285.23 | +47.68% | 27 qtrssince 2019-Q2 | Increased 51 |
ASTERA LABS INC | 735,341 | $122.3M | 1.3% | $166.17 | +0.12% | 4 qtrssince 2025-Q1 | Increased 77 |
NATERA INC | 521,750 | $119.5M | 1.3% | $110.76 | +107.64% | 27 qtrssince 2019-Q2 | Increased 63 |
POPULAR INC | 954,230 | $118.8M | 1.3% | $70.23 | +75.41% | 28 qtrssince 2019-Q1 | Decreased 0 |
ALASKA AIR GROUP INC | 2.3M | $114.7M | 1.2% | $48.11 | +4.56% | 28 qtrssince 2019-Q1 | Increased 59 |
EAGLE MATLS INC | 545,349 | $112.7M | 1.2% | $178.97 | +17.43% | 28 qtrssince 2019-Q1 | Decreased 0 |
TERADYNE INC | 571,240 | $110.6M | 1.2% | $116.93 | +68.13% | 5 qtrssince 2024-Q4 | Decreased 0 |
KNIGHT-SWIFT TRANSPORTATION | 2M | $102.2M | 1.1% | $49.91 | +5.38% | 28 qtrssince 2019-Q1 | Increased 76 |
DARLING INGREDIENTS INC | 2.7M | $97.9M | 1.0% | $38.42 | -4.92% | 11 qtrssince 2023-Q2 | Decreased 0 |
XPO INC | 720,353 | $97.9M | 1.0% | $52.77 | +160.93% | 19 qtrssince 2021-Q2 | Decreased 0 |
SANMINA CORP | 638,741 | $95.9M | 1.0% | $69.32 | +119.32% | 9 qtrssince 2023-Q4 | Decreased 0 |
CIRCLE INTERNET GROUP INC | 1.1M | $89.6M | 1.0% | $79.30 | 0.00% | 1 qtr | New 58 |
ULTRA CLEAN HLDGS INC | 3.5M | $88.9M | 0.9% | $30.76 | -16.23% | 13 qtrssince 2022-Q4 | Increased 48 |
UNITED THERAPEUTICS CORP | 181,177 | $88.3M | 0.9% | $337.12 | +47.18% | 24 qtrssince 2020-Q1 | Increased 44 |
ENTEGRIS INC | 1M | $88.3M | 0.9% | $89.97 | -6.58% | 6 qtrssince 2024-Q3 | Decreased 0 |
MKS INC | 550,735 | $88M | 0.9% | $103.77 | +53.59% | 28 qtrssince 2019-Q1 | Decreased 0 |
FRONTIER CAPITAL MANAGEMENT CO LLC manages $9.4B across 295 positions as of Q4 2025. Top holdings: FTAI (2.7%), AMTM (1.8%), GVA (1.5%). Fund DNA: Steady Compounder. HoldingsIntel Score: 1.5/5.0.
Active quarter - 25 new positions, 27 exits, 92 increased. Top move: ALAB (INCREASED, conviction 77). Portfolio: $9.4B across 295 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
Verify source filings on SEC EDGAR