Frontier Capital Management Co. LLC
In its 13F for Q4 2025 (holdings as of December 31, 2025, filed February 17, 2026), Frontier Capital Management Co. LLC reported 295 stock positions worth $9.4 billion. Its top holding was Ftai Aviation (FTAI) at 2.7% of the portfolio, followed by Amentum (AMTM, 1.8%) and Granite Construction (GVA, 1.5%). Compared with Q3 2025, it opened 23 new positions, sold out of 25, added to 92 and reduced 173. The biggest buy was Astera Labs (ALAB, shares +45687%) and the biggest sale Carlyle (CG, shares −77%).
- Most Recent 13F
- Q2 2026
- Location
- Boston, MA
- CIK
- 0000351173
- Portfolio Value
- $9.4B (Q4 2025)
- SEC Filing
- 0001172661-26-000845 ↗ filed Feb 17, 2026
Holdings Value
Holdings 295 stocks · $9.4B
| FTAI Ftai Aviation Ltd. | 2.71% | 1,296,579 | $255.2M | Reduce -28.9% |
| AMTM Amentum Holdings Inc. | 1.78% | 5,772,976 | $167.4M | Add +11.0% |
| GVA Granite Construction Inc. | 1.54% | 1,257,903 | $145.1M | Reduce -3.0% |
| ATI Ati Inc. | 1.49% | 1,227,453 | $140.9M | Reduce -21.0% |
| MDB Mongodb Inc. | 1.35% | 302,093 | $126.8M | Add +6.1% |
| ALAB Astera Labs Inc. | 1.30% | 735,341 | $122.3M | Add +45687.1% |
| NTRA Natera Inc. | 1.27% | 521,750 | $119.5M | Add +41.4% |
| BPOP Popular Inc. | 1.26% | 954,230 | $118.8M | Reduce -11.3% |
| ALK Alaska Air Group Inc. | 1.22% | 2,280,772 | $114.7M | Add +27.5% |
| EXP Eagle Materials Inc. | 1.20% | 545,349 | $112.7M | Reduce -42.2% |
| TER Teradyne Inc. | 1.17% | 571,240 | $110.6M | Reduce -60.0% |
| KNX Knight-Swift Transportation | 1.08% | 1,954,547 | $102.2M | Add +187.1% |
| DAR Darling Ingredients Inc. | 1.04% | 2,720,397 | $97.9M | Reduce -4.5% |
| XPO Xpo Inc. | 1.04% | 720,353 | $97.9M | Reduce -35.2% |
| SANM Sanmina Corp. | 1.02% | 638,741 | $95.9M | Reduce -19.4% |
| CRCL Circle Internet Group Inc. | 0.95% | 1,130,104 | $89.6M | New |
| UCTT Ultra Clean Holdings Inc. | 0.94% | 3,509,839 | $88.9M | Add +15.7% |
| UTHR United Therapeutics Corp. | 0.94% | 181,177 | $88.3M | Add +4.2% |
| ENTG Entegris Inc. | 0.94% | 1,047,498 | $88.3M | Reduce -29.3% |
| MKSI MKS Inc. | 0.93% | 550,735 | $88.0M | Reduce -49.0% |
| MAT Mattel Inc. | 0.89% | 4,215,431 | $83.6M | Reduce -15.5% |
| ASH Ashland Inc. | 0.89% | 1,425,289 | $83.6M | Add +236.7% |
| MPWR Monolithic Power Systems Inc. | 0.81% | 84,118 | $76.2M | Reduce -48.7% |
| WTFC Wintrust Financial Corp. | 0.81% | 543,048 | $75.9M | Add +0.4% |
| LCII Lci Industries | 0.77% | 595,842 | $72.3M | Reduce -6.8% |
| COHR Coherent Corp. | 0.77% | 390,939 | $72.2M | Reduce -71.5% |
| LSCC Lattice Semiconductor Corp. | 0.76% | 978,639 | $72.0M | Reduce -6.5% |
| RNST Renasant Corp. | 0.75% | 2,008,532 | $70.7M | Reduce -5.0% |
| INDI Indie Semiconductor Inc. Class A | 0.71% | 18,843,494 | $66.5M | Add +4.6% |
| BBIO Bridgebio Pharma Inc. | 0.67% | 826,131 | $63.2M | Add +25.2% |
| FBP First Bancorp Puerto Rico | 0.67% | 3,048,271 | $63.2M | Reduce -0.9% |
| SAIA Saia Inc. | 0.64% | 184,718 | $60.3M | Add +56.0% |
| RCL Royal Caribbean Cruises Ltd. | 0.64% | 215,850 | $60.2M | Reduce -39.0% |
| BLDR Builders Firstsource Inc. | 0.63% | 576,172 | $59.3M | Reduce -55.4% |
| P Everpure Inc. Class A filed as PURE STORAGE INC | 0.63% | 880,925 | $59.0M | Add +3.2% |
| ELAN Elanco Animal Health Inc. | 0.62% | 2,576,502 | $58.3M | Reduce -10.6% |
| ADC Agree Realty Corp. | 0.62% | 806,232 | $58.1M | Reduce -12.7% |
| CWK Cushman & Wakefield Ltd. | 0.61% | 3,552,632 | $57.5M | Reduce -28.1% |
| FR First Industrial Realty TR | 0.61% | 998,257 | $57.2M | Reduce -22.7% |
| BURL Burlington Stores Inc. | 0.60% | 196,732 | $56.8M | Reduce -17.0% |
| GENI Genius Sports Ltd. | 0.60% | 5,136,036 | $56.6M | Add +54.0% |
| PRDO Perdoceo Education Corp. | 0.60% | 1,912,481 | $56.1M | Add +6.5% |
| WFRD Weatherford International PL | 0.59% | 714,541 | $55.9M | Reduce -0.8% |
| KBR KBR Inc. | 0.59% | 1,381,575 | $55.5M | Add +11.5% |
| RRX Regal Rexnord Corp. | 0.58% | 389,090 | $54.6M | Reduce -5.3% |
| EBC Eastern Bankshares Inc. | 0.58% | 2,961,743 | $54.6M | Reduce -0.9% |
| STAG Stag Industrial Inc. | 0.57% | 1,467,202 | $53.9M | Reduce -6.1% |
| BDC Belden Inc. | 0.57% | 462,040 | $53.9M | Add +7.0% |
| IRT Independence Realty Trust Inc. | 0.57% | 3,072,365 | $53.7M | Reduce -9.3% |
| SILA Sila Realty Trust Inc. | 0.57% | 2,284,365 | $53.2M | Reduce -12.9% |
| FAF First American Financial | 0.55% | 843,345 | $51.8M | Add +0.3% |
| SIGI Selective Insurance Group | 0.55% | 615,218 | $51.5M | Add +270.7% |
| MDU Mdu Resources Group Inc. | 0.54% | 2,615,969 | $51.1M | Reduce -12.6% |
| WBS Webster Financial Corp. | 0.53% | 800,420 | $50.4M | Reduce -0.9% |
| INSM Insmed Inc. | 0.53% | 284,844 | $49.6M | Reduce -13.4% |
| KYMR Kymera Therapeutics Inc. | 0.53% | 635,957 | $49.5M | Add +22.8% |
| TDW Tidewater Inc. | 0.51% | 948,737 | $47.9M | Reduce -1.7% |
| CRDO Credo Technology Group Holdi | 0.50% | 330,472 | $47.6M | Add +159.6% |
| SIMO Silicon Motion Technol-ADR | 0.50% | 511,471 | $47.4M | Reduce -51.0% |
| SNCY Sun Country Airlines Holding filed as SUN CTRY AIRLS HLDGS INC | 0.50% | 3,287,513 | $47.3M | Reduce -1.3% |
| TFIN Triumph Financial Inc. | 0.50% | 751,897 | $47.1M | Add +53.7% |
| CRS Carpenter Technology | 0.50% | 148,544 | $46.8M | Reduce -6.2% |
| U Unity Software Inc. | 0.49% | 1,050,468 | $46.4M | Reduce -41.3% |
| TKR Timken Co. | 0.49% | 547,835 | $46.1M | Reduce -6.3% |
| SNX TD Synnex Corp. | 0.49% | 306,058 | $46.0M | Reduce -5.9% |
| DOCN Digitalocean Holdings Inc. | 0.49% | 952,478 | $45.8M | Add +18.8% |
| RARE Ultragenyx Pharmaceutical Inc. | 0.48% | 1,965,084 | $45.2M | Add +83.8% |
| MRVL Marvell Technology Inc. | 0.48% | 528,983 | $45.0M | Reduce -33.8% |
| WSFS WSFS Financial Corp. | 0.46% | 792,501 | $43.8M | Reduce -0.9% |
| VST Vistra Corp. | 0.46% | 270,468 | $43.6M | Reduce -49.8% |
| LUNR Intuitive Machines Inc. | 0.46% | 2,669,079 | $43.3M | Add +111.0% |
| RKLB Rocket Lab Corp. | 0.46% | 620,730 | $43.3M | Reduce -25.2% |
| NMIH Nmi Holdings Inc. filed as NMI HLDGS INC | 0.46% | 1,059,178 | $43.2M | Reduce -8.5% |
| EPRT Essential Properties Realty | 0.45% | 1,443,961 | $42.8M | Reduce -13.8% |
| QDEL Quidelortho Corp. | 0.44% | 1,445,342 | $41.3M | Add +29.7% |
| CVSA Covista Inc. filed as ADTALEM GLOBAL ED INC | 0.44% | 397,726 | $41.2M | Add +23.5% |
| AKAM Akamai Technologies Inc. | 0.42% | 457,055 | $39.9M | New |
| GTX Garrett Motion Inc. | 0.42% | 2,281,743 | $39.8M | Add +5.9% |
| LXP LXP Industrial Trust | 0.42% | 790,585 | $39.2M | Reduce -0.9% |
| ALGT Allegiant Travel Co. | 0.41% | 458,589 | $39.1M | Reduce -12.3% |
| ABG Asbury Automotive Group | 0.41% | 168,125 | $39.1M | Reduce -1.0% |
| AIR Aar Corp. | 0.41% | 470,637 | $39.0M | Add +24.1% |
| HXL Hexcel Corp. | 0.39% | 500,159 | $37.0M | Reduce -23.4% |
| TMDX Transmedics Group Inc. | 0.39% | 302,760 | $36.8M | Add +38.0% |
| JBL Jabil Inc. | 0.39% | 161,398 | $36.8M | Reduce -15.9% |
| APGE Apogee Therapeutics Inc. | 0.38% | 480,453 | $36.3M | Add +28.3% |
| SLGN Silgan Holdings Inc. | 0.38% | 895,925 | $36.2M | Add +9.9% |
| EPAM Epam Systems Inc. | 0.38% | 176,028 | $36.1M | Add +14.1% |
| WAFD Wafd Inc. | 0.38% | 1,121,853 | $35.9M | Reduce -0.9% |
| LNG Cheniere Energy Inc. | 0.38% | 184,077 | $35.8M | Reduce -51.8% |
| FBK FB Financial Corp. filed as FB FINL CORP | 0.38% | 634,877 | $35.4M | Add +34.1% |
| BILL Bill Holdings Inc. | 0.37% | 641,710 | $35.0M | Add +0.7% |
| HOPE Hope Bancorp Inc. | 0.37% | 3,150,194 | $34.5M | Add +2.6% |
| LAD Lithia Motors Inc. | 0.37% | 103,735 | $34.5M | Reduce -1.2% |
| BKU Bankunited Inc. | 0.36% | 771,143 | $34.4M | Add +19.2% |
| RVMD Revolution Medicines Inc. | 0.36% | 430,768 | $34.3M | Add +250.8% |
| ATMU Atmus Filtration Technologie | 0.36% | 653,554 | $33.9M | Add +77.3% |
| TILE Interface Inc. | 0.35% | 1,196,943 | $33.4M | Reduce -0.9% |
| FICO Fair Isaac Corp. | 0.35% | 19,751 | $33.4M | Add +4.3% |
| NET Cloudflare Inc. Class A | 0.35% | 168,012 | $33.1M | Reduce -45.1% |
Portfolio Sells Q3 2025 → Q4 2025
| CG The Carlyle Group Inc. | Reduce -77.4% | 0.31% | −0.93 |
| VRT Vertiv Holdings Co. Class A | Reduce -93.0% | 0.09% | −0.88 |
| APP AppLovin Corp. Class A | Reduce -92.7% | 0.08% | −0.84 |
| EXP Eagle Materials Inc. | Reduce -42.2% | 1.20% | −0.78 |
| BLDR Builders Firstsource Inc. | Reduce -55.4% | 0.63% | −0.77 |
| DBRG Digitalbridge Group Inc. | Sold out | 0.00% | −0.68 |
| TER Teradyne Inc. | Reduce -60.0% | 1.17% | −0.59 |
| COHR Coherent Corp. | Reduce -71.5% | 0.77% | −0.56 |
| RBLX Roblox Corp. Class A | Reduce -57.4% | 0.23% | −0.55 |
| MPWR Monolithic Power Systems Inc. | Reduce -48.7% | 0.81% | −0.54 |
| VEEV Veeva Systems Inc. Class A | Reduce -69.2% | 0.19% | −0.51 |
| VST Vistra Corp. | Reduce -49.8% | 0.46% | −0.48 |
| LNG Cheniere Energy Inc. | Reduce -51.8% | 0.38% | −0.42 |
| AGCO Agco Corp. | Reduce -82.8% | 0.10% | −0.42 |
| RCL Royal Caribbean Cruises Ltd. | Reduce -39.0% | 0.64% | −0.39 |
| SIMO Silicon Motion Technol-ADR | Reduce -51.0% | 0.50% | −0.38 |
| CSGP Costar Group Inc. | Sold out | 0.00% | −0.37 |
| HUBS HubSpot Inc. | Sold out | 0.00% | −0.35 |
| ZS Zscaler Inc. | Reduce -62.7% | 0.17% | −0.33 |
| GWRE Guidewire Software Inc. | Reduce -57.5% | 0.26% | −0.33 |
| XYZ Block Inc. | Reduce -64.5% | 0.19% | −0.32 |
| MOD Modine Manufacturing Co. | Reduce -61.8% | 0.23% | −0.31 |
| CELH Celsius Holdings Inc. | Reduce -45.0% | 0.33% | −0.31 |
| TREX Trex Company Inc. | Sold out | 0.00% | −0.30 |
| IDXX Idexx Laboratories Inc. | Reduce -58.1% | 0.33% | −0.29 |
| ENTG Entegris Inc. | Reduce -29.3% | 0.94% | −0.29 |
| ALNY Alnylam Pharmaceuticals Inc. | Reduce -58.9% | 0.21% | −0.28 |
| EFX Equifax Inc. | Reduce -68.4% | 0.13% | −0.27 |
| PSN Parsons Corp. | Reduce -62.1% | 0.14% | −0.27 |
| MKSI MKS Inc. | Reduce -49.0% | 0.93% | −0.27 |
| XPO Xpo Inc. | Reduce -35.2% | 1.04% | −0.25 |
| FMC FMC Corp. | Sold out | 0.00% | −0.24 |
| NET Cloudflare Inc. Class A | Reduce -45.1% | 0.35% | −0.24 |
| FTNT Fortinet Inc. | Sold out | 0.00% | −0.23 |
| TSCO Tractor Supply Company | Reduce -49.0% | 0.26% | −0.23 |
| AON Aon PLC Class A | Reduce -58.0% | 0.22% | −0.23 |
| APH Amphenol Corp. Class A | Reduce -54.1% | 0.33% | −0.22 |
| ZETA Zeta Global Holdings Corp. Class A | Reduce -81.0% | 0.06% | −0.21 |
| TTD Trade Desk Inc./the Class A | Reduce -81.1% | 0.04% | −0.21 |
| CGNX Cognex Corp. | Reduce -39.9% | 0.26% | −0.20 |
| PWR Quanta Services Inc. | Reduce -51.8% | 0.28% | −0.20 |
| CZR Caesars Entertainment Inc. | Reduce -61.4% | 0.13% | −0.20 |
| TRU Transunion | Reduce -50.3% | 0.30% | −0.19 |
| RMD Resmed Inc. | Reduce -51.9% | 0.19% | −0.19 |
| ROL Rollins Inc. | Reduce -51.9% | 0.27% | −0.19 |
| ANET Arista Networks Inc. | Reduce -70.6% | 0.09% | −0.19 |
| DLB Dolby Laboratories Inc. Class A | Reduce -42.4% | 0.29% | −0.19 |
| SM SM Energy Co. | Sold out | 0.00% | −0.18 |
| DKNG Draftkings Inc. Class A | Reduce -42.4% | 0.30% | −0.18 |
| CACI Caci International Inc. Class A | Reduce -59.1% | 0.18% | −0.17 |
Portfolio Buys Q3 2025 → Q4 2025
| ALAB Astera Labs Inc. | Add +45687.1% | 1.30% | +1.30 |
| CRCL Circle Internet Group Inc. | New | 0.95% | +0.95 |
| KNX Knight-Swift Transportation | Add +187.1% | 1.08% | +0.84 |
| NTRA Natera Inc. | Add +41.4% | 1.27% | +0.74 |
| ASH Ashland Inc. | Add +236.7% | 0.89% | +0.71 |
| AMTM Amentum Holdings Inc. | Add +11.0% | 1.78% | +0.66 |
| MDB Mongodb Inc. | Add +6.1% | 1.35% | +0.55 |
| SIGI Selective Insurance Group | Add +270.7% | 0.55% | +0.43 |
| AKAM Akamai Technologies Inc. | New | 0.42% | +0.42 |
| ALK Alaska Air Group Inc. | Add +27.5% | 1.22% | +0.42 |
| BBIO Bridgebio Pharma Inc. | Add +25.2% | 0.67% | +0.36 |
| LUNR Intuitive Machines Inc. | Add +111.0% | 0.46% | +0.34 |
| CRDO Credo Technology Group Holdi | Add +159.6% | 0.50% | +0.34 |
| SAIA Saia Inc. | Add +56.0% | 0.64% | +0.32 |
| RVMD Revolution Medicines Inc. | Add +250.8% | 0.36% | +0.31 |
| BETR Better Home & Finance Holdin | New | 0.30% | +0.30 |
| NUVL Nuvalent Inc. Class A | New | 0.29% | +0.29 |
| JAZZ Jazz Pharmaceuticals PLC | Add +373.1% | 0.33% | +0.28 |
| UTHR United Therapeutics Corp. | Add +4.2% | 0.94% | +0.28 |
| TFIN Triumph Financial Inc. | Add +53.7% | 0.50% | +0.28 |
| KYMR Kymera Therapeutics Inc. | Add +22.8% | 0.53% | +0.26 |
| MLI Mueller Industries Inc. | New | 0.26% | +0.26 |
| APGE Apogee Therapeutics Inc. | Add +28.3% | 0.38% | +0.25 |
| DOCN Digitalocean Holdings Inc. | Add +18.8% | 0.49% | +0.24 |
| FLS Flowserve Corp. | Add +141.2% | 0.32% | +0.24 |
| NXPI NXP Semiconductors NV | New | 0.24% | +0.24 |
| GENI Genius Sports Ltd. | Add +54.0% | 0.60% | +0.23 |
| PWP Perella Weinberg Partners | New | 0.22% | +0.22 |
| TNET Trinet Group Inc. | New | 0.22% | +0.22 |
| NP Neptune Insurance Holdi Class A | New | 0.21% | +0.21 |
| ATMU Atmus Filtration Technologie | Add +77.3% | 0.36% | +0.21 |
| VOYG Voyager Technologies Inc. Class A | New | 0.20% | +0.20 |
| UCTT Ultra Clean Holdings Inc. | Add +15.7% | 0.94% | +0.20 |
| VERA Vera Therapeutics Inc. | New | 0.20% | +0.20 |
| URGN Urogen Pharma Ltd. | New | 0.19% | +0.19 |
| CRL Charles River Laboratories | Add +146.1% | 0.26% | +0.19 |
| RARE Ultragenyx Pharmaceutical Inc. | Add +83.8% | 0.48% | +0.19 |
| EPAM Epam Systems Inc. | Add +14.1% | 0.38% | +0.17 |
| TMDX Transmedics Group Inc. | Add +38.0% | 0.39% | +0.17 |
| RDDT Reddit Inc. Class A | New | 0.17% | +0.17 |
| AXSM Axsome Therapeutics Inc. | Add +24.8% | 0.31% | +0.17 |
| WTFC Wintrust Financial Corp. | Add +0.4% | 0.81% | +0.16 |
| SBCF Seacoast Banking Corp. | Add +56.3% | 0.34% | +0.16 |
| GTX Garrett Motion Inc. | Add +5.9% | 0.42% | +0.16 |
| NSIT Insight Enterprises Inc. | Add +111.3% | 0.35% | +0.15 |
| TRVI Trevi Therapeutics Inc. | New | 0.15% | +0.15 |
| QDEL Quidelortho Corp. | Add +29.7% | 0.44% | +0.14 |
| BKU Bankunited Inc. | Add +19.2% | 0.36% | +0.14 |
| SON Sonoco Products Co. | Add +58.0% | 0.30% | +0.14 |
| FBK FB Financial Corp. | Add +34.1% | 0.38% | +0.14 |
All Filings
| Quarter | Positions | 13F Reported Value | Top Holdings |
|---|---|---|---|
| Q2 2026 | 300 | $10.7B | FTAI, GVA, ALK, AAOI, AKAM |
| Q1 2026 | 291 | $9.7B | FTAI, DAR, UTHR, CRCL, GVA |
| Q4 2025 | 295 | $9.4B | FTAI, AMTM, GVA, ATI, MDB |
| Q3 2025 | 297 | $11.2B | FTAI, EXP, TER, BLDR, MPWR |
| Q2 2025 | 294 | $10.8B | FTAI, ATI, MAT, EXP, XPO |
| Q1 2025 | 283 | $9.1B | FTAI, BECN, MAT, EXP, ATI |
| Q4 2024 | 285 | $10.5B | FTAI, BECN, ATI, XPO, EXP |
| Q3 2024 | 281 | $10.6B | FTAI, EXP, ATI, BECN, MAT |
| Q2 2024 | 279 | $10.1B | FTAI, BECN, ATI, UCTT, EXP |
| Q1 2024 | 269 | $10.7B | FTAI, EXP, XPO, BECN, BLDR |