# FRONTIER CAPITAL MANAGEMENT CO LLC

> Institutional holdings reported to the SEC as of Q2 2026 on Form 13F. CIK 351173. Source: https://holderbook.com/funds/351173-frontier-capital-management-co-llc/

- Reported value: $10.7B
- Positions: 300
- Weight of the ten largest: 14.5%
- Filed: 2026-08-14

A 13F reports long US equity positions only. Short positions, bonds, foreign listings, private holdings and cash are not visible, so this is not the manager's whole book.

## Holdings

| Security | Ticker | Value | Shares | Weight | Quarters held |
|---|---|---|---|---|---|
| FTAI AVIATION LTD | [FTAI](https://holderbook.com/stocks/FTAI/) | $320.2M | 1,183,492 | 3.0% | 15 |
| GRANITE CONSTR INC | [GVA](https://holderbook.com/stocks/GVA/) | $176.9M | 1,118,881 | 1.6% | 31 |
| ALASKA AIR GROUP INC | [ALK](https://holderbook.com/stocks/ALK/) | $176.7M | 3,384,643 | 1.6% | 30 |
| APPLIED OPTOELECTRONICS INC | [AAOI](https://holderbook.com/stocks/AAOI/) | $144.5M | 975,318 | 1.3% | 2 |
| AKAMAI TECHNOLOGIES INC | [AKAM](https://holderbook.com/stocks/AKAM/) | $134.4M | 1,136,573 | 1.3% | 3 |
| ASHLAND INC | [ASH](https://holderbook.com/stocks/ASH/) | $131.8M | 1,999,908 | 1.2% | 4 |
| LATTICE SEMICONDUCTOR CORP | [LSCC](https://holderbook.com/stocks/LSCC/) | $125.7M | 821,848 | 1.2% | 10 |
| POPULAR INC | [BPOP](https://holderbook.com/stocks/BPOP/) | $119.1M | 725,227 | 1.1% | 31 |
| MONGODB INC | [MDB](https://holderbook.com/stocks/MDB/) | $112.2M | 334,098 | 1.0% | 29 |
| UNITED THERAPEUTICS CORP DEL | [UTHR](https://holderbook.com/stocks/UTHR/) | $112.1M | 206,808 | 1.0% | 26 |
| KNIGHT-SWIFT TRANSN HLDGS IN | [KNX](https://holderbook.com/stocks/KNX/) | $109.9M | 1,410,955 | 1.0% | 31 |
| EAGLE MATLS INC | [EXP](https://holderbook.com/stocks/EXP/) | $103.2M | 458,621 | 1.0% | 31 |
| STRIDE INC | [LRN](https://holderbook.com/stocks/LRN/) | $102.8M | 1,191,710 | 1.0% | 8 |
| XPO INC | [XPO](https://holderbook.com/stocks/XPO/) | $102.6M | 499,601 | 1.0% | 21 |
| BRIDGEBIO PHARMA INC | [BBIO](https://holderbook.com/stocks/BBIO/) | $102.3M | 1,373,057 | 1.0% | 10 |
| LIBERTY ENERGY INC | [LBRT](https://holderbook.com/stocks/LBRT/) | $97.4M | 3,720,666 | 0.9% | 3 |
| SANMINA CORP | [SANM](https://holderbook.com/stocks/SANM/) | $95.7M | 378,111 | 0.9% | 11 |
| ULTRA CLEAN HLDGS INC | [UCTT](https://holderbook.com/stocks/UCTT/) | $95.2M | 667,532 | 0.9% | 15 |
| ULTRAGENYX PHARMACEUTICAL IN | [RARE](https://holderbook.com/stocks/RARE/) | $95.1M | 2,847,936 | 0.9% | 5 |
| INSULET CORP | [PODD](https://holderbook.com/stocks/PODD/) | $94.8M | 622,506 | 0.9% | 31 |
| MODINE MFG CO | [MOD](https://holderbook.com/stocks/MOD/) | $91.8M | 343,868 | 0.9% | 31 |
| FLOWSERVE CORP | [FLS](https://holderbook.com/stocks/FLS/) | $91.5M | 1,233,291 | 0.9% | 4 |
| KIRBY CORP | [KEX](https://holderbook.com/stocks/KEX/) | $90.6M | 666,554 | 0.8% | 31 |
| ALLEGIANT TRAVEL CO | [ALGT](https://holderbook.com/stocks/ALGT/) | $90.0M | 765,347 | 0.8% | 4 |
| EVERPURE INC | [P](https://holderbook.com/stocks/P/) | $88.2M | 1,120,040 | 0.8% | 12 |
| AMENTUM HOLDINGS INC | [AMTM](https://holderbook.com/stocks/AMTM/) | $85.7M | 4,143,971 | 0.8% | 6 |
| KYMERA THERAPEUTICS INC | [KYMR](https://holderbook.com/stocks/KYMR/) | $85.0M | 740,866 | 0.8% | 8 |
| INSMED INC | [INSM](https://holderbook.com/stocks/INSM/) | $84.8M | 795,242 | 0.8% | 10 |
| ATI INC | [ATI](https://holderbook.com/stocks/ATI/) | $82.8M | 419,968 | 0.8% | 31 |
| RENASANT CORP | [RNST](https://holderbook.com/stocks/RNST/) | $75.7M | 1,778,953 | 0.7% | 31 |
| ASTERA LABS INC | [ALAB](https://holderbook.com/stocks/ALAB/) | $74.7M | 154,601 | 0.7% | 6 |
| ROYAL CARIBBEAN GROUP | [RCL](https://holderbook.com/stocks/RCL/) | $74.3M | 233,963 | 0.7% | 4 |
| PALVELLA THERAPEUTICS INC NE | [PVLA](https://holderbook.com/stocks/PVLA/) | $73.2M | 478,833 | 0.7% | 2 |
| DYNATRACE INC | [DT](https://holderbook.com/stocks/DT/) | $71.8M | 1,635,587 | 0.7% | 1 |
| INDIE SEMICONDUCTOR INC | [INDI](https://holderbook.com/stocks/INDI/) | $71.5M | 15,914,169 | 0.7% | 13 |
| AGREE RLTY CORP | [ADC](https://holderbook.com/stocks/ADC/) | $71.4M | 943,005 | 0.7% | 21 |
| INTUITIVE MACHINES INC | [LUNR](https://holderbook.com/stocks/LUNR/) | $67.9M | 3,173,434 | 0.6% | 4 |
| JAZZ PHARMACEUTICALS PLC | [JAZZ](https://holderbook.com/stocks/JAZZ/) | $66.8M | 277,279 | 0.6% | 17 |
| SAIA INC | [SAIA](https://holderbook.com/stocks/SAIA/) | $63.8M | 151,477 | 0.6% | 5 |
| ENTEGRIS INC | [ENTG](https://holderbook.com/stocks/ENTG/) | $63.3M | 351,950 | 0.6% | 8 |
| FIRST BANCORP CORPORATION | [FBP](https://holderbook.com/stocks/FBP/) | $63.1M | 2,422,265 | 0.6% | 31 |
| CIRCLE INTERNET GROUP INC | [CRCL](https://holderbook.com/stocks/CRCL/) | $62.9M | 1,004,783 | 0.6% | 3 |
| HUBBELL INC | [HUBB](https://holderbook.com/stocks/HUBB/) | $62.8M | 119,997 | 0.6% | 11 |
| AXSOME THERAPEUTICS INC | [AXSM](https://holderbook.com/stocks/AXSM/) | $62.2M | 254,280 | 0.6% | 15 |
| FLEX LTD | [FLEX](https://holderbook.com/stocks/FLEX/) | $61.9M | 382,135 | 0.6% | 31 |
| WINTRUST FINL CORP | [WTFC](https://holderbook.com/stocks/WTFC/) | $61.8M | 384,593 | 0.6% | 27 |
| TIDEWATER INC NEW | [TDW](https://holderbook.com/stocks/TDW/) | $59.6M | 894,796 | 0.6% | 12 |
| ATMUS FILTRATION TECHNOLOGIE | [ATMU](https://holderbook.com/stocks/ATMU/) | $59.0M | 1,157,930 | 0.6% | 8 |
| JABIL INC | [JBL](https://holderbook.com/stocks/JBL/) | $58.7M | 152,187 | 0.5% | 31 |
| BUILDERS FIRSTSOURCE INC | [BLDR](https://holderbook.com/stocks/BLDR/) | $58.3M | 651,389 | 0.5% | 25 |
| SNOWFLAKE INC | [SNOW](https://holderbook.com/stocks/SNOW/) | $57.6M | 226,439 | 0.5% | 6 |
| TREVI THERAPEUTICS INC | [TRVI](https://holderbook.com/stocks/TRVI/) | $57.3M | 3,070,740 | 0.5% | 3 |
| GENIUS SPORTS LIMITED | [GENI](https://holderbook.com/stocks/GENI/) | $57.2M | 9,432,864 | 0.5% | 5 |
| THE BALDWIN INSURANCE GRP IN | [BWIN](https://holderbook.com/stocks/BWIN/) | $55.8M | 2,097,658 | 0.5% | 3 |
| VERA THERAPEUTICS INC | [VERA](https://holderbook.com/stocks/VERA/) | $55.6M | 1,295,405 | 0.5% | 3 |
| UROGEN PHARMA LTD | [URGN](https://holderbook.com/stocks/URGN/) | $55.5M | 1,508,547 | 0.5% | 3 |
| MKS INC. | [MKSI](https://holderbook.com/stocks/MKSI/) | $53.7M | 120,625 | 0.5% | 30 |
| GARRETT MOTION INC | [GTX](https://holderbook.com/stocks/GTX/) | $53.1M | 1,466,821 | 0.5% | 7 |
| ELANCO ANIMAL HEALTH INC | [ELAN](https://holderbook.com/stocks/ELAN/) | $52.6M | 2,138,550 | 0.5% | 14 |
| EASTERN BANKSHARES INC | [EBC](https://holderbook.com/stocks/EBC/) | $51.9M | 2,332,022 | 0.5% | 8 |
| FIRST AMERN FINL CORP | [FAF](https://holderbook.com/stocks/FAF/) | $51.4M | 749,097 | 0.5% | 5 |
| API GROUP CORP | [APG](https://holderbook.com/stocks/APG/) | $51.0M | 1,203,831 | 0.5% | 5 |
| STAG INDUSTRIAL INC | [STAG](https://holderbook.com/stocks/STAG/) | $50.7M | 1,331,842 | 0.5% | 31 |
| WEATHERFORD INTL PLC | [WFRD](https://holderbook.com/stocks/WFRD/) | $50.3M | 617,390 | 0.5% | 13 |
| AAR CORP | [AIR](https://holderbook.com/stocks/AIR/) | $50.1M | 350,441 | 0.5% | 4 |
| CARPENTER TECHNOLOGY CORP | [CRS](https://holderbook.com/stocks/CRS/) | $49.6M | 80,488 | 0.5% | 31 |
| PERDOCEO ED CORP | [PRDO](https://holderbook.com/stocks/PRDO/) | $49.5M | 1,547,631 | 0.5% | 26 |
| ACADIA HEALTHCARE COMPANY IN | [ACHC](https://holderbook.com/stocks/ACHC/) | $49.4M | 1,672,857 | 0.5% | 2 |
| COGNEX CORP | [CGNX](https://holderbook.com/stocks/CGNX/) | $48.5M | 669,588 | 0.5% | 9 |
| FIRST INDL RLTY TR INC | [FR](https://holderbook.com/stocks/FR/) | $48.4M | 788,792 | 0.5% | 12 |
| DATADOG INC | [DDOG](https://holderbook.com/stocks/DDOG/) | $47.4M | 182,164 | 0.4% | 10 |
| NATERA INC | [NTRA](https://holderbook.com/stocks/NTRA/) | $47.1M | 173,547 | 0.4% | 29 |
| PRIMORIS SVCS CORP | [PRIM](https://holderbook.com/stocks/PRIM/) | $46.5M | 468,762 | 0.4% | 1 |
| ANTERO RESOURCES CORP | [AR](https://holderbook.com/stocks/AR/) | $46.3M | 1,318,103 | 0.4% | 2 |
| FAIR ISAAC CORP | [FICO](https://holderbook.com/stocks/FICO/) | $45.7M | 38,278 | 0.4% | 19 |
| MONOLITHIC PWR SYS INC | [MPWR](https://holderbook.com/stocks/MPWR/) | $45.2M | 32,723 | 0.4% | 31 |
| TRIUMPH FINANCIAL INC | [TFIN](https://holderbook.com/stocks/TFIN/) | $44.6M | 584,333 | 0.4% | 4 |
| DARLING INGREDIENTS INC | [DAR](https://holderbook.com/stocks/DAR/) | $43.4M | 793,866 | 0.4% | 13 |
| STANDARDAERO INC | [SARO](https://holderbook.com/stocks/SARO/) | $43.3M | 1,449,333 | 0.4% | 1 |
| VOYAGER TECHNOLOGIES INC | [VOYG](https://holderbook.com/stocks/VOYG/) | $43.3M | 1,343,054 | 0.4% | 3 |
| TD SYNNEX CORPORATION | [SNX](https://holderbook.com/stocks/SNX/) | $43.3M | 161,933 | 0.4% | 30 |
| CHEMED CORP NEW | [CHE](https://holderbook.com/stocks/CHE/) | $42.2M | 90,567 | 0.4% | 2 |
| MDU RES GROUP INC | [MDU](https://holderbook.com/stocks/MDU/) | $42.2M | 1,987,666 | 0.4% | 31 |
| REGAL REXNORD CORPORATION | [RRX](https://holderbook.com/stocks/RRX/) | $42.1M | 176,675 | 0.4% | 10 |
| PAGAYA TECHNOLOGIES LTD | [PGY](https://holderbook.com/stocks/PGY/) | $41.9M | 2,296,417 | 0.4% | 7 |
| ACV AUCTIONS INC | [ACVA](https://holderbook.com/stocks/ACVA/) | $41.8M | 5,813,660 | 0.4% | 11 |
| KBR INC | [KBR](https://holderbook.com/stocks/KBR/) | $41.6M | 1,206,062 | 0.4% | 31 |
| RYERSON HLDG CORP | [RYZ](https://holderbook.com/stocks/RYZ/) | $41.4M | 1,683,408 | 0.4% | 7 |
| ERO COPPER CORP | [ERO](https://holderbook.com/stocks/ERO/) | $41.2M | 1,540,063 | 0.4% | 14 |
| INSIGHT ENTERPRISES INC | [NSIT](https://holderbook.com/stocks/NSIT/) | $41.1M | 337,686 | 0.4% | 31 |
| WSFS FINL CORP | [WSFS](https://holderbook.com/stocks/WSFS/) | $41.1M | 535,179 | 0.4% | 31 |
| TERADYNE INC | [TER](https://holderbook.com/stocks/TER/) | $40.9M | 84,563 | 0.4% | 7 |
| GULFPORT ENERGY CORP | [GPOR](https://holderbook.com/stocks/GPOR/) | $40.9M | 240,790 | 0.4% | 2 |
| SEACOAST BKG CORP FLA | [SBCF](https://holderbook.com/stocks/SBCF/) | $40.8M | 1,227,771 | 0.4% | 4 |
| CREDO TECHNOLOGY GROUP HOLDI | [CRDO](https://holderbook.com/stocks/CRDO/) | $40.7M | 149,509 | 0.4% | 9 |
| CLOUDFLARE INC | [NET](https://holderbook.com/stocks/NET/) | $40.6M | 165,415 | 0.4% | 10 |
| APOGEE THERAPEUTICS INC | [APGE](https://holderbook.com/stocks/APGE/) | $40.3M | 303,739 | 0.4% | 8 |
| LEMONADE INC | [LMND](https://holderbook.com/stocks/LMND/) | $39.7M | 609,820 | 0.4% | 2 |
| INDEPENDENCE RLTY TR INC | [IRT](https://holderbook.com/stocks/IRT/) | $39.7M | 2,376,740 | 0.4% | 15 |
| QUANTA SVCS INC | [PWR](https://holderbook.com/stocks/PWR/) | $38.9M | 54,069 | 0.4% | 28 |

## What the disclosed book did

Not the fund's return. This is the change in value of the positions disclosed on Form 13F, had they been left untouched, against SPY over the same quarter ends.

| Quarter | Book | Market | Difference | Priced |
|---|---|---|---|---|
| Q2 2026 | +22.6% | +14.8% | +7.8% | 100% |
| Q1 2026 | +3.4% | -4.6% | +8.0% | 100% |
| Q4 2025 | +4.6% | +2.4% | +2.2% | 100% |
| Q3 2025 | +7.1% | +7.8% | -0.7% | 100% |
| Q2 2025 | +13.0% | +10.5% | +2.5% | 98% |
| Q1 2025 | -10.7% | -4.6% | -6.2% | 100% |
| Q4 2024 | +0.6% | +2.1% | -1.5% | 100% |
| Q3 2024 | +7.8% | +5.4% | +2.4% | 100% |

## Quarter by quarter

| Quarter | Value | Positions |
|---|---|---|
| Q2 2026 | $10.7B | 300 |
| Q1 2026 | $9.7B | 291 |
| Q4 2025 | $9.4B | 295 |
| Q3 2025 | $11.2B | 297 |
| Q2 2025 | $10.8B | 294 |
| Q1 2025 | $9.1B | 283 |
| Q4 2024 | $10.5B | 285 |
| Q3 2024 | $10.6B | 281 |
| Q2 2024 | $10.1B | 279 |
| Q1 2024 | $10.7B | 269 |
| Q4 2023 | $9.9B | 263 |
| Q3 2023 | $9.1B | 267 |