Frontier Capital Management Co. LLC
In its 13F for Q2 2025 (holdings as of June 30, 2025, filed August 14, 2025), Frontier Capital Management Co. LLC reported 294 stock positions worth $10.8 billion. Its top holding was Ftai Aviation (FTAI) at 2.3% of the portfolio, followed by Ati (ATI, 1.8%) and Mattel (MAT, 1.6%). Compared with Q1 2025, it opened 25 new positions, sold out of 14, added to 126 and reduced 140. The biggest buy was a new position in Roblox Class A (RBLX) and the biggest sale an exit from Beacon Roofing Supply (BECN).
- Most Recent 13F
- Q2 2026
- Location
- Boston, MA
- CIK
- 0000351173
- Portfolio Value
- $10.8B (Q2 2025)
- SEC Filing
- 0001172661-25-003311 ↗ filed Aug 14, 2025
Holdings Value
Holdings 294 stocks · $10.8B
| FTAI Ftai Aviation Ltd. | 2.28% | 2,144,625 | $246.7M | Add +5.9% |
| ATI Ati Inc. | 1.78% | 2,225,724 | $192.2M | Reduce -14.5% |
| MAT Mattel Inc. | 1.64% | 8,980,205 | $177.1M | Add +0.6% |
| EXP Eagle Materials Inc. | 1.55% | 830,284 | $167.8M | Add +36.0% |
| XPO Xpo Inc. | 1.33% | 1,133,879 | $143.2M | Reduce -4.0% |
| AMTM Amentum Holdings Inc. | 1.19% | 5,460,743 | $128.9M | Add +52.6% |
| GVA Granite Construction Inc. | 1.19% | 1,370,029 | $128.1M | Add +14.3% |
| DAR Darling Ingredients Inc. | 1.17% | 3,323,470 | $126.1M | Add +66.0% |
| SANM Sanmina Corp. | 1.12% | 1,231,884 | $120.5M | Add +20.9% |
| BPOP Popular Inc. | 1.10% | 1,082,018 | $119.2M | Add +14.0% |
| LNG Cheniere Energy Inc. | 0.94% | 417,016 | $101.6M | Reduce -0.6% |
| MPWR Monolithic Power Systems Inc. | 0.90% | 132,843 | $97.2M | Add +3.2% |
| CG The Carlyle Group Inc. | 0.90% | 1,887,159 | $97.0M | Reduce -28.4% |
| SIMO Silicon Motion Technol-ADR | 0.89% | 1,281,115 | $96.3M | Add +115.4% |
| DLB Dolby Laboratories Inc. Class A | 0.85% | 1,237,667 | $91.9M | Add +2.3% |
| TWLO Twilio Inc. Class A | 0.84% | 731,188 | $90.9M | Reduce -3.6% |
| MKSI MKS Inc. | 0.84% | 912,380 | $90.7M | Add +146.4% |
| CRS Carpenter Technology | 0.83% | 325,956 | $90.1M | Reduce -1.3% |
| INSP Inspire Medical Systems Inc. | 0.83% | 693,203 | $90.0M | Add +59.9% |
| VRT Vertiv Holdings Co. Class A | 0.82% | 690,702 | $88.7M | Add +13.8% |
| XYZ Block Inc. | 0.82% | 1,296,659 | $88.1M | Add +6.1% |
| DXCM Dexcom Inc. | 0.75% | 932,371 | $81.4M | Reduce -3.7% |
| ALGM Allegro Microsystems Inc. | 0.75% | 2,365,957 | $80.9M | Reduce -18.7% |
| MDB Mongodb Inc. | 0.72% | 369,291 | $77.5M | Reduce -23.7% |
| KNX Knight-Swift Transportation | 0.71% | 1,725,661 | $76.3M | Add +3.5% |
| ADC Agree Realty Corp. | 0.70% | 1,037,190 | $75.8M | Reduce -0.7% |
| RRX Regal Rexnord Corp. | 0.70% | 517,989 | $75.1M | Add +50.4% |
| EPRT Essential Properties Realty | 0.65% | 2,214,807 | $70.7M | Add +12.3% |
| BLDR Builders Firstsource Inc. | 0.65% | 601,197 | $70.2M | Reduce -4.4% |
| VEEV Veeva Systems Inc. Class A | 0.63% | 237,739 | $68.5M | Reduce -12.3% |
| PWR Quanta Services Inc. | 0.63% | 178,967 | $67.7M | Reduce -10.4% |
| RBLX Roblox Corp. Class A | 0.63% | 643,024 | $67.6M | New |
| AON Aon PLC Class A | 0.62% | 186,844 | $66.7M | Add +4.4% |
| JBL Jabil Inc. | 0.61% | 302,314 | $65.9M | Reduce -15.2% |
| COHR Coherent Corp. | 0.60% | 729,134 | $65.0M | Add +142.5% |
| NTRA Natera Inc. | 0.60% | 384,964 | $65.0M | Reduce -3.4% |
| BFAM Bright Horizons Family Solut | 0.60% | 523,551 | $64.7M | Reduce -11.5% |
| WTFC Wintrust Financial Corp. | 0.59% | 516,423 | $64.0M | Reduce -4.6% |
| INDI Indie Semiconductor Inc. Class A | 0.59% | 17,960,663 | $63.9M | Add +29.9% |
| ZS Zscaler Inc. | 0.59% | 203,580 | $63.9M | Reduce -37.6% |
| VST Vistra Corp. | 0.59% | 329,531 | $63.9M | New |
| FR First Industrial Realty TR | 0.59% | 1,313,885 | $63.2M | Reduce -7.0% |
| LTH Life Time Group Holdings Inc. | 0.58% | 2,064,552 | $62.6M | Add +19.0% |
| UCTT Ultra Clean Holdings Inc. | 0.58% | 2,754,163 | $62.2M | Add +41.5% |
| IRT Independence Realty Trust Inc. | 0.57% | 3,483,911 | $61.6M | Add +2.8% |
| TRU Transunion | 0.57% | 698,761 | $61.5M | Add +3.4% |
| MRC MRC Global Inc. | 0.57% | 4,453,159 | $61.1M | Reduce -21.5% |
| FBP First Bancorp Puerto Rico | 0.56% | 2,911,224 | $60.6M | Reduce -4.6% |
| FICO Fair Isaac Corp. | 0.56% | 33,170 | $60.6M | Reduce -10.2% |
| APP AppLovin Corp. Class A | 0.56% | 172,398 | $60.4M | Reduce -33.4% |
| BURL Burlington Stores Inc. | 0.56% | 258,769 | $60.2M | Reduce -4.3% |
| DKNG Draftkings Inc. Class A | 0.56% | 1,401,538 | $60.1M | Add +10.3% |
| SILA Sila Realty Trust Inc. | 0.55% | 2,531,194 | $59.9M | Add +8.7% |
| FTNT Fortinet Inc. | 0.55% | 565,478 | $59.8M | Reduce -18.9% |
| HUBS HubSpot Inc. | 0.55% | 107,166 | $59.7M | Reduce -15.4% |
| DBRG Digitalbridge Group Inc. | 0.54% | 5,669,342 | $58.7M | Add +29.8% |
| IDXX Idexx Laboratories Inc. | 0.54% | 109,065 | $58.5M | Reduce -5.9% |
| PNFP Pinnacle Financial Partners | 0.54% | 528,987 | $58.4M | Reduce -1.6% |
| STE Steris PLC | 0.54% | 241,371 | $58.0M | Reduce -5.5% |
| STAG Stag Industrial Inc. | 0.53% | 1,588,429 | $57.6M | Add +24.3% |
| PRDO Perdoceo Education Corp. | 0.53% | 1,752,555 | $57.3M | Add +2.0% |
| UTHR United Therapeutics Corp. | 0.53% | 198,583 | $57.1M | Reduce -36.7% |
| TKR Timken Co. | 0.52% | 766,793 | $55.6M | Add +33.1% |
| PR Permian Resources Corp. Class A | 0.51% | 4,043,039 | $55.1M | Add +4.9% |
| PGY Pagaya Technologies Ltd. Class A | 0.51% | 2,574,395 | $54.9M | Reduce -36.6% |
| EPAM Epam Systems Inc. | 0.50% | 307,761 | $54.4M | Add +10.2% |
| PLNT Planet Fitness Inc. Class A | 0.50% | 498,650 | $54.4M | Add +28.9% |
| NET Cloudflare Inc. Class A | 0.49% | 272,738 | $53.4M | Add +6945.7% |
| ENTG Entegris Inc. | 0.49% | 659,306 | $53.2M | Add +53.9% |
| TER Teradyne Inc. | 0.49% | 589,687 | $53.0M | Add +1198.4% |
| LSCC Lattice Semiconductor Corp. | 0.49% | 1,071,774 | $52.5M | Reduce -18.8% |
| LAD Lithia Motors Inc. | 0.48% | 153,456 | $51.8M | Reduce -21.3% |
| CWK Cushman & Wakefield UK Holdc | 0.48% | 4,676,051 | $51.8M | New |
| U Unity Software Inc. | 0.48% | 2,137,262 | $51.7M | Add +74.5% |
| HXL Hexcel Corp. | 0.48% | 909,967 | $51.4M | Add +88.5% |
| APH Amphenol Corp. Class A | 0.46% | 505,891 | $50.0M | Reduce -17.0% |
| ALK Alaska Air Group Inc. | 0.46% | 1,009,317 | $49.9M | Add +78.4% |
| GWRE Guidewire Software Inc. | 0.46% | 211,554 | $49.8M | Reduce -17.5% |
| BDC Belden Inc. | 0.46% | 428,115 | $49.6M | Reduce -11.5% |
| MRVL Marvell Technology Inc. | 0.46% | 638,203 | $49.4M | Reduce -19.9% |
| TTD Trade Desk Inc./the Class A filed as THE TRADE DESK INC | 0.46% | 685,933 | $49.4M | Add +110.6% |
| ROL Rollins Inc. | 0.46% | 874,480 | $49.3M | Add +0.8% |
| PLTR Palantir Technologies Inc. Class A | 0.45% | 359,925 | $49.1M | Reduce -65.0% |
| P Everpure Inc. Class A filed as PURE STORAGE INC | 0.45% | 849,187 | $48.9M | Add +4.4% |
| DDOG Datadog Inc. Class A | 0.45% | 362,951 | $48.8M | Add +7.7% |
| EFX Equifax Inc. | 0.44% | 183,655 | $47.6M | Add +0.1% |
| FAF First American Financial | 0.44% | 775,379 | $47.6M | New |
| NMIH Nmi Holdings Inc. filed as NMI HLDGS INC | 0.44% | 1,119,957 | $47.3M | Add +3.9% |
| ALC Alcon Inc. filed as ALCON AG | 0.44% | 533,880 | $47.1M | Reduce -5.9% |
| RMD Resmed Inc. | 0.43% | 181,536 | $46.8M | Reduce -5.9% |
| MDU Mdu Resources Group Inc. | 0.43% | 2,790,814 | $46.5M | Add +19.7% |
| LCII Lci Industries | 0.43% | 504,761 | $46.0M | Add +47.0% |
| CZR Caesars Entertainment Inc. | 0.42% | 1,592,714 | $45.2M | Reduce -58.2% |
| MGNI Magnite Inc. | 0.40% | 1,793,830 | $43.3M | Add +419.4% |
| GTLS Chart Industries Inc. | 0.40% | 259,101 | $42.7M | Add +166.5% |
| SNX TD Synnex Corp. | 0.39% | 312,591 | $42.4M | Reduce -7.9% |
| ALGN Align Technology Inc. | 0.39% | 224,025 | $42.4M | Reduce -7.5% |
| CSGP Costar Group Inc. | 0.39% | 527,478 | $42.4M | Add +20.0% |
| WBS Webster Financial Corp. | 0.39% | 776,063 | $42.4M | Add +2.8% |
| WSFS WSFS Financial Corp. | 0.39% | 768,364 | $42.3M | Add +1.3% |
Portfolio Sells Q1 2025 → Q2 2025
| BECN Beacon Roofing Supply Inc. | Sold out | 0.00% | −1.90 |
| CZR Caesars Entertainment Inc. | Reduce -58.2% | 0.42% | −0.62 |
| UTHR United Therapeutics Corp. | Reduce -36.7% | 0.53% | −0.53 |
| PLTR Palantir Technologies Inc. Class A | Reduce -65.0% | 0.45% | −0.49 |
| CG The Carlyle Group Inc. | Reduce -28.4% | 0.90% | −0.36 |
| CTSH Cognizant Tech Solutions-A | Reduce -57.4% | 0.20% | −0.34 |
| GTLB Gitlab Inc. Class A | Reduce -88.9% | 0.03% | −0.33 |
| INSM Insmed Inc. | Reduce -73.5% | 0.14% | −0.33 |
| KBR KBR Inc. | Reduce -35.9% | 0.36% | −0.33 |
| BILL Bill Holdings Inc. | Reduce -42.0% | 0.31% | −0.31 |
| CURB Curbline Properties Corp. | Reduce -66.5% | 0.11% | −0.29 |
| CFLT Confluent Inc. Class A | Reduce -73.6% | 0.09% | −0.28 |
| LSCC Lattice Semiconductor Corp. | Reduce -18.8% | 0.49% | −0.27 |
| SKX Skechers USA Inc. Class A | Sold out | 0.00% | −0.26 |
| APO Apollo Global Management Inc. | Reduce -34.6% | 0.34% | −0.25 |
| FR First Industrial Realty TR | Reduce -7.0% | 0.59% | −0.25 |
| CVSA Covista Inc. | Reduce -44.1% | 0.36% | −0.24 |
| HUBS HubSpot Inc. | Reduce -15.4% | 0.55% | −0.24 |
| BFAM Bright Horizons Family Solut | Reduce -11.5% | 0.60% | −0.22 |
| HOLX Hologic Inc. | Sold out | 0.00% | −0.21 |
| MDB Mongodb Inc. | Reduce -23.7% | 0.72% | −0.21 |
| BLDR Builders Firstsource Inc. | Reduce -4.4% | 0.65% | −0.21 |
| CAKE The Cheesecake Factory Inc. | Reduce -49.9% | 0.25% | −0.21 |
| APP AppLovin Corp. Class A | Reduce -33.4% | 0.56% | −0.19 |
| FICO Fair Isaac Corp. | Reduce -10.2% | 0.56% | −0.18 |
| MSCI MSCI Inc. | Reduce -32.2% | 0.26% | −0.18 |
| FTNT Fortinet Inc. | Reduce -18.9% | 0.55% | −0.18 |
| ADC Agree Realty Corp. | Reduce -0.7% | 0.70% | −0.18 |
| MBLY Mobileye Global Inc. Class A | Sold out | 0.00% | −0.18 |
| KKR KKR & Co. Inc. | Reduce -35.2% | 0.30% | −0.17 |
| LGIH Lgi Homes Inc. | Reduce -6.1% | 0.27% | −0.17 |
| AVTR Avantor Inc. | Reduce -53.4% | 0.08% | −0.17 |
| AZEK The Azek Co. Inc. | Sold out | 0.00% | −0.16 |
| HAIN Hain Celestial Group Inc. | Sold out | 0.00% | −0.16 |
| POR Portland General Electric Co. | Sold out | 0.00% | −0.15 |
| ALC Alcon Inc. | Reduce -5.9% | 0.44% | −0.15 |
| BURL Burlington Stores Inc. | Reduce -4.3% | 0.56% | −0.15 |
| MRC MRC Global Inc. | Reduce -21.5% | 0.57% | −0.15 |
| LAD Lithia Motors Inc. | Reduce -21.3% | 0.48% | −0.15 |
| ZETA Zeta Global Holdings Corp. Class A | Reduce -38.9% | 0.19% | −0.13 |
| LNG Cheniere Energy Inc. | Reduce -0.6% | 0.94% | −0.12 |
| HL Hecla Mining Co. | Reduce -46.6% | 0.11% | −0.12 |
| REXR Rexford Industrial Realty Inc. | Sold out | 0.00% | −0.12 |
| ZS Zscaler Inc. | Reduce -37.6% | 0.59% | −0.12 |
| A Agilent Technologies Inc. | Reduce -22.3% | 0.22% | −0.11 |
| LXP LXP Industrial Trust | Reduce -6.9% | 0.34% | −0.11 |
| IRTC Irhythm Holdings Inc. | Reduce -52.7% | 0.15% | −0.11 |
| SITC Site Centers Corp. | Sold out | 0.00% | −0.10 |
| IT Gartner Inc. | Sold out | 0.00% | −0.10 |
| SM SM Energy Co. | Reduce -7.9% | 0.18% | −0.10 |
Portfolio Buys Q1 2025 → Q2 2025
| RBLX Roblox Corp. Class A | New | 0.63% | +0.63 |
| VST Vistra Corp. | New | 0.59% | +0.59 |
| SIMO Silicon Motion Technol-ADR | Add +115.4% | 0.89% | +0.56 |
| MKSI MKS Inc. | Add +146.4% | 0.84% | +0.51 |
| NET Cloudflare Inc. Class A | Add +6945.7% | 0.49% | +0.49 |
| DAR Darling Ingredients Inc. | Add +66.0% | 1.17% | +0.48 |
| AMTM Amentum Holdings Inc. | Add +52.6% | 1.19% | +0.48 |
| CWK Cushman & Wakefield UK Holdc | New | 0.48% | +0.48 |
| TER Teradyne Inc. | Add +1198.4% | 0.49% | +0.45 |
| FAF First American Financial | New | 0.44% | +0.44 |
| COHR Coherent Corp. | Add +142.5% | 0.60% | +0.39 |
| APG Api Group Corp. | New | 0.37% | +0.37 |
| RBC RBC Bearings Inc. | New | 0.37% | +0.37 |
| MGNI Magnite Inc. | Add +419.4% | 0.40% | +0.36 |
| AGCO Agco Corp. | New | 0.36% | +0.36 |
| WING Wingstop Inc. | New | 0.35% | +0.35 |
| VRT Vertiv Holdings Co. Class A | Add +13.8% | 0.82% | +0.34 |
| STRL Sterling Infrastructure Inc. | New | 0.33% | +0.33 |
| CRDO Credo Technology Group Holdi | Add +184.8% | 0.36% | +0.30 |
| CHD Church & Dwight Co. Inc. | New | 0.29% | +0.29 |
| PSN Parsons Corp. | Add +568.4% | 0.34% | +0.29 |
| INDI Indie Semiconductor Inc. Class A | Add +29.9% | 0.59% | +0.28 |
| SANM Sanmina Corp. | Add +20.9% | 1.12% | +0.27 |
| RRX Regal Rexnord Corp. | Add +50.4% | 0.70% | +0.27 |
| TTD Trade Desk Inc./the Class A | Add +110.6% | 0.46% | +0.26 |
| CELH Celsius Holdings Inc. | New | 0.24% | +0.24 |
| GTLS Chart Industries Inc. | Add +166.5% | 0.40% | +0.24 |
| SNOW Snowflake Inc. | Add +83.7% | 0.39% | +0.23 |
| U Unity Software Inc. | Add +74.5% | 0.48% | +0.22 |
| ODD Oddity Tech Ltd. Class A | New | 0.20% | +0.20 |
| GVA Granite Construction Inc. | Add +14.3% | 1.19% | +0.20 |
| HXL Hexcel Corp. | Add +88.5% | 0.48% | +0.19 |
| SIGI Selective Insurance Group | New | 0.19% | +0.19 |
| KD Kyndryl Holdings Inc. | New | 0.18% | +0.18 |
| RARE Ultragenyx Pharmaceutical Inc. | New | 0.18% | +0.18 |
| FIP Ftai Infrastructure Inc. | Add +425.7% | 0.21% | +0.17 |
| QXO Qxo Inc. | New | 0.17% | +0.17 |
| KYMR Kymera Therapeutics Inc. | Add +272.7% | 0.20% | +0.16 |
| ALK Alaska Air Group Inc. | Add +78.4% | 0.46% | +0.16 |
| WEAV Weave Communications Inc. | New | 0.16% | +0.16 |
| BPOP Popular Inc. | Add +14.0% | 1.10% | +0.15 |
| FMC FMC Corp. | Add +202.1% | 0.24% | +0.15 |
| LHX L3HARRIS Technologies Inc. | Add +62.6% | 0.35% | +0.14 |
| WFRD Weatherford International PL | Add +110.8% | 0.33% | +0.13 |
| GENI Genius Sports Ltd. | New | 0.13% | +0.13 |
| SAIA Saia Inc. | New | 0.13% | +0.13 |
| ALAB Astera Labs Inc. | Add +145.9% | 0.19% | +0.13 |
| DBRG Digitalbridge Group Inc. | Add +29.8% | 0.54% | +0.12 |
| UCTT Ultra Clean Holdings Inc. | Add +41.5% | 0.58% | +0.12 |
| CACI Caci International Inc. Class A | Add +28.5% | 0.38% | +0.11 |
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 |