Frontier Capital Management Co. LLC
In its 13F for Q1 2025 (holdings as of March 31, 2025, filed May 15, 2025), Frontier Capital Management Co. LLC reported 283 stock positions worth $9.1 billion. Its top holding was Ftai Aviation (FTAI) at 2.5% of the portfolio, followed by Beacon Roofing Supply (BECN, 1.9%) and Mattel (MAT, 1.9%). Compared with Q4 2024, it opened 22 new positions, sold out of 24, added to 97 and reduced 164. The biggest buy was Dolby Laboratories Class A (DLB, shares +288%) and the biggest sale Trade Desk Inc./the Class A (TTD, shares −57%).
- Most Recent 13F
- Q2 2026
- Location
- Boston, MA
- CIK
- 0000351173
- Portfolio Value
- $9.1B (Q1 2025)
- SEC Filing
- 0001172661-25-002022 ↗ filed May 15, 2025
Holdings Value
Holdings 283 stocks · $9.1B
| FTAI Ftai Aviation Ltd. | 2.46% | 2,025,388 | $224.9M | Add +7.8% |
| BECN Beacon Roofing Supply Inc. | 1.90% | 1,405,443 | $173.9M | Reduce -41.1% |
| MAT Mattel Inc. | 1.90% | 8,924,289 | $173.4M | Add +17.9% |
| EXP Eagle Materials Inc. | 1.48% | 610,657 | $135.5M | Reduce -3.8% |
| ATI Ati Inc. | 1.48% | 2,602,258 | $135.4M | Reduce -14.9% |
| XPO Xpo Inc. | 1.39% | 1,181,111 | $127.1M | Reduce -4.7% |
| CG The Carlyle Group Inc. | 1.26% | 2,633,914 | $114.8M | Add +7.3% |
| DLB Dolby Laboratories Inc. Class A | 1.06% | 1,209,424 | $97.1M | Add +288.4% |
| LNG Cheniere Energy Inc. | 1.06% | 419,440 | $97.1M | Add +132.4% |
| UTHR United Therapeutics Corp. | 1.06% | 313,818 | $96.7M | Add +28.8% |
| CZR Caesars Entertainment Inc. | 1.04% | 3,808,705 | $95.2M | Add +4.1% |
| GVA Granite Construction Inc. | 0.99% | 1,198,125 | $90.3M | Reduce -15.3% |
| BPOP Popular Inc. | 0.96% | 949,192 | $87.7M | Reduce -4.0% |
| PLTR Palantir Technologies Inc. Class A | 0.95% | 1,028,081 | $86.8M | Reduce -47.0% |
| MDB Mongodb Inc. | 0.93% | 483,879 | $84.9M | Add +42.6% |
| ADC Agree Realty Corp. | 0.88% | 1,043,998 | $80.6M | Add +1.3% |
| BLDR Builders Firstsource Inc. | 0.86% | 628,599 | $78.5M | Add +53.9% |
| SANM Sanmina Corp. | 0.85% | 1,018,859 | $77.6M | Add +1.4% |
| FR First Industrial Realty TR | 0.83% | 1,412,615 | $76.2M | Add +2.2% |
| BFAM Bright Horizons Family Solut | 0.82% | 591,495 | $75.1M | Add +21.9% |
| MPWR Monolithic Power Systems Inc. | 0.82% | 128,722 | $74.7M | Reduce -13.9% |
| TWLO Twilio Inc. Class A | 0.81% | 758,845 | $74.3M | Reduce -7.5% |
| ALGM Allegro Microsystems Inc. | 0.80% | 2,909,737 | $73.1M | Add +3090.7% |
| KNX Knight-Swift Transportation | 0.79% | 1,668,065 | $72.5M | Reduce -2.2% |
| HUBS HubSpot Inc. | 0.79% | 126,741 | $72.4M | Add +9.9% |
| IRT Independence Realty Trust Inc. | 0.79% | 3,389,653 | $72.0M | Reduce -0.9% |
| AON Aon PLC Class A | 0.78% | 178,972 | $71.4M | Add +24.3% |
| LSCC Lattice Semiconductor Corp. | 0.76% | 1,319,319 | $69.2M | Add +6.7% |
| INSP Inspire Medical Systems Inc. | 0.76% | 433,487 | $69.0M | Add +3.5% |
| APP AppLovin Corp. Class A | 0.75% | 258,896 | $68.6M | Reduce -28.7% |
| FICO Fair Isaac Corp. | 0.74% | 36,927 | $68.1M | Reduce -5.8% |
| FTNT Fortinet Inc. | 0.73% | 697,261 | $67.1M | Add +3.5% |
| XYZ Block Inc. | 0.73% | 1,221,688 | $66.4M | Add +2.5% |
| DXCM Dexcom Inc. | 0.72% | 968,278 | $66.1M | Add +39.7% |
| AMTM Amentum Holdings Inc. | 0.71% | 3,578,732 | $65.1M | New |
| MRC MRC Global Inc. | 0.71% | 5,672,155 | $65.1M | Reduce -0.4% |
| ZS Zscaler Inc. | 0.71% | 326,101 | $64.7M | Add +40.2% |
| BURL Burlington Stores Inc. | 0.70% | 270,463 | $64.5M | Reduce -9.7% |
| EPRT Essential Properties Realty | 0.70% | 1,972,817 | $64.4M | Add +58.9% |
| VEEV Veeva Systems Inc. Class A | 0.69% | 271,124 | $62.8M | Reduce -23.2% |
| DAR Darling Ingredients Inc. | 0.68% | 2,002,653 | $62.6M | Reduce -11.2% |
| KBR KBR Inc. | 0.68% | 1,250,409 | $62.3M | Reduce -5.3% |
| SILA Sila Realty Trust Inc. | 0.68% | 2,328,218 | $62.2M | Add +9.5% |
| WTFC Wintrust Financial Corp. | 0.67% | 541,137 | $60.9M | Reduce -1.2% |
| CRS Carpenter Technology | 0.65% | 330,109 | $59.8M | Reduce -26.7% |
| FBP First Bancorp Puerto Rico | 0.64% | 3,052,550 | $58.5M | Reduce -1.3% |
| STE Steris PLC | 0.63% | 255,285 | $57.9M | Add +8.6% |
| LAD Lithia Motors Inc. | 0.63% | 195,076 | $57.3M | Reduce -28.3% |
| PNFP Pinnacle Financial Partners | 0.62% | 537,292 | $57.0M | Reduce -1.4% |
| BILL Bill Holdings Inc. | 0.62% | 1,231,683 | $56.5M | Add +7.5% |
| NTRA Natera Inc. | 0.62% | 398,676 | $56.4M | Reduce -52.6% |
| TRU Transunion | 0.61% | 675,881 | $56.1M | Reduce -5.4% |
| CVSA Covista Inc. filed as ADTALEM GLOBAL ED INC | 0.61% | 553,710 | $55.7M | Reduce -15.9% |
| ALC Alcon Inc. filed as ALCON AG | 0.59% | 567,393 | $53.9M | Add +2.8% |
| APO Apollo Global Management Inc. | 0.59% | 392,144 | $53.7M | Reduce -5.8% |
| PR Permian Resources Corp. Class A | 0.58% | 3,853,267 | $53.4M | Reduce -11.4% |
| LTH Life Time Group Holdings Inc. | 0.57% | 1,734,972 | $52.4M | Add +22.6% |
| PWR Quanta Services Inc. | 0.56% | 199,673 | $50.8M | Add +2.2% |
| CTSH Cognizant Tech Solutions-A | 0.54% | 648,172 | $49.6M | Reduce -5.8% |
| MRVL Marvell Technology Inc. | 0.54% | 796,430 | $49.0M | Add +13.5% |
| IDXX Idexx Laboratories Inc. | 0.53% | 115,916 | $48.7M | Add +28.6% |
| BDC Belden Inc. | 0.53% | 483,677 | $48.5M | Add +5.8% |
| JBL Jabil Inc. | 0.53% | 356,279 | $48.5M | Reduce -12.5% |
| GWRE Guidewire Software Inc. | 0.53% | 256,434 | $48.0M | Reduce -40.2% |
| EPAM Epam Systems Inc. | 0.52% | 279,372 | $47.2M | Reduce -14.2% |
| ROL Rollins Inc. | 0.51% | 867,243 | $46.9M | Add +26.6% |
| STAG Stag Industrial Inc. | 0.50% | 1,277,849 | $46.2M | Add +14.0% |
| EBC Eastern Bankshares Inc. | 0.50% | 2,764,956 | $45.3M | Add +3.7% |
| EFX Equifax Inc. | 0.49% | 183,455 | $44.7M | Reduce -13.3% |
| VRT Vertiv Holdings Co. Class A | 0.48% | 607,173 | $43.8M | Add +295.2% |
| PRDO Perdoceo Education Corp. | 0.47% | 1,718,588 | $43.3M | Reduce -1.2% |
| RMD Resmed Inc. | 0.47% | 192,945 | $43.2M | Add +0.3% |
| KKR KKR & Co. Inc. | 0.47% | 373,260 | $43.2M | Reduce -38.6% |
| PGY Pagaya Technologies Ltd. Class A | 0.47% | 4,059,930 | $42.5M | Add +34.4% |
| INSM Insmed Inc. | 0.47% | 557,587 | $42.5M | Add +28.2% |
| DKNG Draftkings Inc. Class A | 0.46% | 1,270,778 | $42.2M | Add +3.3% |
| SLGN Silgan Holdings Inc. | 0.46% | 823,250 | $42.1M | Reduce -0.8% |
| CAKE The Cheesecake Factory Inc. | 0.46% | 861,455 | $41.9M | Reduce -0.8% |
| UCTT Ultra Clean Holdings Inc. | 0.46% | 1,945,886 | $41.7M | Reduce -8.7% |
| TKR Timken Co. | 0.45% | 576,165 | $41.4M | Add +23.6% |
| LXP LXP Industrial Trust | 0.45% | 4,738,465 | $41.0M | Add +1.8% |
| MSCI MSCI Inc. | 0.44% | 71,531 | $40.5M | Reduce -5.8% |
| LGIH Lgi Homes Inc. | 0.44% | 603,588 | $40.1M | Add +16.9% |
| APH Amphenol Corp. Class A | 0.44% | 609,758 | $40.0M | Add +8.9% |
| MTD Mettler-Toledo International | 0.43% | 33,438 | $39.5M | Reduce -5.8% |
| MDU Mdu Resources Group Inc. | 0.43% | 2,330,634 | $39.4M | Add +10.1% |
| WSFS WSFS Financial Corp. | 0.43% | 758,599 | $39.3M | Add +5.5% |
| RRX Regal Rexnord Corp. | 0.43% | 344,481 | $39.2M | Reduce -9.3% |
| WBS Webster Financial Corp. | 0.43% | 755,220 | $38.9M | Reduce -0.8% |
| NMIH Nmi Holdings Inc. filed as NMI HLDGS INC | 0.42% | 1,077,521 | $38.8M | Reduce -17.0% |
| DBRG Digitalbridge Group Inc. | 0.42% | 4,367,192 | $38.5M | Reduce -21.7% |
| ALGN Align Technology Inc. | 0.42% | 242,226 | $38.5M | Reduce -5.3% |
| RNST Renasant Corp. | 0.42% | 1,125,656 | $38.2M | Reduce -0.9% |
| ENTG Entegris Inc. | 0.41% | 428,531 | $37.5M | Add +511.8% |
| PLNT Planet Fitness Inc. Class A | 0.41% | 386,762 | $37.4M | Reduce -34.1% |
| ABG Asbury Automotive Group | 0.41% | 168,758 | $37.3M | Reduce -0.8% |
| CURB Curbline Properties Corp. | 0.40% | 1,505,046 | $36.4M | Reduce -1.3% |
| P Everpure Inc. Class A filed as PURE STORAGE INC | 0.39% | 813,464 | $36.0M | Add +23.2% |
| MTDR Matador Resources Co. | 0.39% | 704,849 | $36.0M | Reduce -0.8% |
| SNX TD Synnex Corp. | 0.39% | 339,258 | $35.3M | Reduce -0.8% |
Portfolio Sells Q4 2024 → Q1 2025
| TTD Trade Desk Inc./the Class A | Reduce -57.3% | 0.19% | −0.66 |
| NTRA Natera Inc. | Reduce -52.6% | 0.62% | −0.65 |
| ANET Arista Networks Inc. | Reduce -61.4% | 0.26% | −0.57 |
| MOD Modine Manufacturing Co. | Reduce -46.9% | 0.36% | −0.53 |
| COIN Coinbase Global Inc. Class A | Sold out | 0.00% | −0.52 |
| BWA Borgwarner Inc. | Sold out | 0.00% | −0.51 |
| CRDO Credo Technology Group Holdi | Reduce -81.8% | 0.07% | −0.46 |
| PLTR Palantir Technologies Inc. Class A | Reduce -47.0% | 0.95% | −0.44 |
| BECN Beacon Roofing Supply Inc. | Reduce -41.1% | 1.90% | −0.40 |
| MXL Maxlinear Inc. | Reduce -53.0% | 0.17% | −0.39 |
| KKR KKR & Co. Inc. | Reduce -38.6% | 0.47% | −0.38 |
| APP AppLovin Corp. Class A | Reduce -28.7% | 0.75% | −0.37 |
| INDI Indie Semiconductor Inc. Class A | Reduce -20.4% | 0.31% | −0.36 |
| ALK Alaska Air Group Inc. | Reduce -42.2% | 0.30% | −0.30 |
| LAD Lithia Motors Inc. | Reduce -28.3% | 0.63% | −0.30 |
| CRWD CrowdStrike Holdings Inc. Class A | Sold out | 0.00% | −0.28 |
| UCTT Ultra Clean Holdings Inc. | Reduce -8.7% | 0.46% | −0.27 |
| GTLS Chart Industries Inc. | Reduce -58.5% | 0.15% | −0.27 |
| HOLX Hologic Inc. | Reduce -54.5% | 0.21% | −0.26 |
| SG Sweetgreen Inc. Class A | Reduce -73.0% | 0.08% | −0.26 |
| JBHT Hunt (jb) Transprt SVCS Inc. | Sold out | 0.00% | −0.25 |
| SWK Stanley Black & Decker Inc. | Sold out | 0.00% | −0.25 |
| LHX L3HARRIS Technologies Inc. | Reduce -56.7% | 0.21% | −0.22 |
| EPAM Epam Systems Inc. | Reduce -14.2% | 0.52% | −0.21 |
| GVA Granite Construction Inc. | Reduce -15.3% | 0.99% | −0.19 |
| KNF Knife River Corp. | Reduce -42.4% | 0.25% | −0.18 |
| DBRG Digitalbridge Group Inc. | Reduce -21.7% | 0.42% | −0.18 |
| SM SM Energy Co. | Reduce -31.7% | 0.27% | −0.18 |
| RXO Rxo Inc. | Reduce -34.0% | 0.27% | −0.17 |
| ACVA Acv Auctions Inc. Class A | Reduce -20.2% | 0.25% | −0.17 |
| GWRE Guidewire Software Inc. | Reduce -40.2% | 0.53% | −0.16 |
| XPO Xpo Inc. | Reduce -4.7% | 1.39% | −0.16 |
| PLNT Planet Fitness Inc. Class A | Reduce -34.1% | 0.41% | −0.14 |
| ONON On Holding AG Class A | Reduce -41.1% | 0.16% | −0.14 |
| ROST Ross Stores Inc. | Reduce -26.5% | 0.34% | −0.13 |
| EVR Evercore Inc. Class A | Reduce -46.9% | 0.10% | −0.13 |
| RRX Regal Rexnord Corp. | Reduce -9.3% | 0.43% | −0.13 |
| WOLF Wolfspeed Inc. | Sold out | 0.00% | −0.13 |
| BYD Boyd Gaming Corp. | Sold out | 0.00% | −0.13 |
| IT Gartner Inc. | Reduce -54.3% | 0.10% | −0.12 |
| ATI Ati Inc. | Reduce -14.9% | 1.48% | −0.12 |
| ECG Everus Construction Group | Reduce -1.1% | 0.21% | −0.12 |
| VKTX Viking Therapeutics Inc. | Reduce -30.1% | 0.11% | −0.12 |
| CHEF The Chefs' Warehouse Inc. | Sold out | 0.00% | −0.11 |
| STVN Stevanato Group SPA | Reduce -56.3% | 0.10% | −0.11 |
| COHU Cohu Inc. | Reduce -0.9% | 0.18% | −0.11 |
| BURL Burlington Stores Inc. | Reduce -9.7% | 0.70% | −0.11 |
| GBX Greenbrier Companies Inc. | Reduce -38.6% | 0.15% | −0.11 |
| CTAS Cintas Corp. | Reduce -48.1% | 0.22% | −0.11 |
| CDP Copt Defense Properties | Reduce -26.4% | 0.30% | −0.10 |
Portfolio Buys Q4 2024 → Q1 2025
| DLB Dolby Laboratories Inc. Class A | Add +288.4% | 1.06% | +0.83 |
| ALGM Allegro Microsystems Inc. | Add +3090.7% | 0.80% | +0.78 |
| AMTM Amentum Holdings Inc. | New | 0.71% | +0.71 |
| LNG Cheniere Energy Inc. | Add +132.4% | 1.06% | +0.69 |
| MAT Mattel Inc. | Add +17.9% | 1.90% | +0.62 |
| CFLT Confluent Inc. Class A | New | 0.36% | +0.36 |
| ENTG Entegris Inc. | Add +511.8% | 0.41% | +0.34 |
| EPRT Essential Properties Realty | Add +58.9% | 0.70% | +0.34 |
| SIMO Silicon Motion Technol-ADR | New | 0.33% | +0.33 |
| ZETA Zeta Global Holdings Corp. Class A | New | 0.33% | +0.33 |
| VRT Vertiv Holdings Co. Class A | Add +295.2% | 0.48% | +0.31 |
| BFAM Bright Horizons Family Solut | Add +21.9% | 0.82% | +0.31 |
| SNCY Sun Country Airlines Holding | New | 0.31% | +0.31 |
| ZS Zscaler Inc. | Add +40.2% | 0.71% | +0.31 |
| BLDR Builders Firstsource Inc. | Add +53.9% | 0.86% | +0.30 |
| AON Aon PLC Class A | Add +24.3% | 0.78% | +0.29 |
| CDW CDW Corp. | New | 0.28% | +0.28 |
| LTH Life Time Group Holdings Inc. | Add +22.6% | 0.57% | +0.28 |
| CACI Caci International Inc. Class A | New | 0.27% | +0.27 |
| BJ Bj's Wholesale Club Holdings | New | 0.27% | +0.27 |
| U Unity Software Inc. | New | 0.26% | +0.26 |
| GTLB Gitlab Inc. Class A | Add +229.1% | 0.36% | +0.25 |
| UTHR United Therapeutics Corp. | Add +28.8% | 1.06% | +0.24 |
| HL Hecla Mining Co. | New | 0.23% | +0.23 |
| DXCM Dexcom Inc. | Add +39.7% | 0.72% | +0.21 |
| ROL Rollins Inc. | Add +26.6% | 0.51% | +0.21 |
| QDEL Quidelortho Corp. | New | 0.21% | +0.21 |
| PGY Pagaya Technologies Ltd. Class A | Add +34.4% | 0.47% | +0.20 |
| ADC Agree Realty Corp. | Add +1.3% | 0.88% | +0.19 |
| SILA Sila Realty Trust Inc. | Add +9.5% | 0.68% | +0.19 |
| INSM Insmed Inc. | Add +28.2% | 0.47% | +0.18 |
| IDXX Idexx Laboratories Inc. | Add +28.6% | 0.53% | +0.18 |
| MDB Mongodb Inc. | Add +42.6% | 0.93% | +0.18 |
| FR First Industrial Realty TR | Add +2.2% | 0.83% | +0.18 |
| STE Steris PLC | Add +8.6% | 0.63% | +0.17 |
| TSCO Tractor Supply Company | Add +230.5% | 0.23% | +0.17 |
| SNOW Snowflake Inc. | New | 0.16% | +0.16 |
| DOCN Digitalocean Holdings Inc. | New | 0.15% | +0.15 |
| STAG Stag Industrial Inc. | Add +14.0% | 0.50% | +0.14 |
| ALC Alcon Inc. | Add +2.8% | 0.59% | +0.14 |
| TKR Timken Co. | Add +23.6% | 0.45% | +0.14 |
| EOLS Evolus Inc. | Add +403.4% | 0.16% | +0.13 |
| FTNT Fortinet Inc. | Add +3.5% | 0.73% | +0.13 |
| SANM Sanmina Corp. | Add +1.4% | 0.85% | +0.13 |
| FARO Faro Technologies Inc. | New | 0.12% | +0.12 |
| CSGP Costar Group Inc. | Add +11.4% | 0.38% | +0.11 |
| LNTH Lantheus Holdings Inc. | Add +51.0% | 0.22% | +0.10 |
| LRN Stride Inc. | Add +175.3% | 0.13% | +0.09 |
| LSCC Lattice Semiconductor Corp. | Add +6.7% | 0.76% | +0.09 |
| RYZ Ryerson Holding Corp. | Add +76.5% | 0.15% | +0.09 |
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 |