FRONTIER CAPITAL MANAGEMENT CO LLC
Sector Allocation
- Industrials26.1%$2.8B
- Technology20.8%$2.2B
- Healthcare16.9%$1.8B
- Financials12.0%$1.3B
- Materials6.0%$644.0M
- Consumer Discretionary5.4%$582.6M
- Energy3.7%$398.1M
- Real Estate3.5%$370.3M
- Consumer Staples2.9%$310.6M
- Communication Services1.3%$138.8M
AUM History
13fpro.ai/research/fund/frontier-capital-management-co-llc-351173
Conviction and streaks
Stable · top 10 = 14.5%From the fund's last 12 quarters of 13F filings: positions held longest at size, and names it added to or trimmed several quarters running.
Largest positions — Q2 2026
FTAI
$320.2MGVA
$176.9MALK
$176.7MAAOI
$144.5MAKAM
$134.4MASH
$131.8MLSCC
$125.7MBPOP
$119.1MMDB
$112.2MUTHR
$112.1MKNX
$109.9MEXP
$103.2MLRN
$102.8MXPO
$102.6MBBIO
$102.3MLBRT
$97.4MSANM
$95.7MUCTT
$95.2MRARE
$95.1MPODD
$94.8M
Top 20 stock positions. Options are left out: 13F reports them at the underlying's value.
13fpro.ai/research/fund/frontier-capital-management-co-llc-351173
FRONTIER CAPITAL MANAGEMENT CO LLC 13F holdings — Q2 2026
$10.7B portfolio (+10.3% QoQ) · 300 holdings · Q2 2026 13F · top 10 are 15% of the stock portfolio
$320.2M
3.0% of stocks
+11%This quarter-26.9%Since filed7+ qtrsHeld$176.9M
1.6% of stocks
-6%This quarter-13.1%Since filed7+ qtrsHeldAIQuality54.5#1,318Est. buyEstimated buy price is Pro: unlock with a free trialTrimmed 4 qtrs in a row$176.7M
1.6% of stocks
+0.3%This quarter-21.9%Since filed7+ qtrsHeld$144.5M
1.4% of stocks
+243%This quarter-48.8%Since filed2 qtrsHeldAIQuality40.1#2,111Est. buyEstimated buy price is Pro: unlock with a free trialAdded 2 qtrs in a row$134.4M
1.3% of stocks
+10%This quarter-20.3%Since filed3 qtrsHeld$131.8M
1.2% of stocks
+5%This quarter-1.3%Since filed4 qtrsHeldAIQualityAI quality score is Pro: unlock with a free trialEst. buyEstimated buy price is Pro: unlock with a free trialAdded 4 qtrs in a row$125.7M
1.2% of stocks
+36%This quarter-20.6%Since filed7+ qtrsHeld$119.1M
1.1% of stocks
-9%This quarter-10.5%Since filed7+ qtrsHeldAIQualityAI quality score is Pro: unlock with a free trialEst. buyEstimated buy price is Pro: unlock with a free trialTrimmed 3 qtrs in a row$112.2M
1.1% of stocks
+56%This quarter-15.3%Since filed7+ qtrsHeld$112.1M
1.0% of stocks
-18%This quarter+18.3%Since filed7+ qtrsHeld
All holdings — FRONTIER CAPITAL MANAGEMENT CO LLC (Q2 2026)
300 disclosed positions from the Form 13F-HR on SEC EDGAR, with quarter-over-quarter share changes. Largest by value first; the ten above are not repeated.
| # | Company | Held | Source | |||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 11 | Knight-Swift Transportation Holdings Inc. | Industrials | $109.9M | 1.0% | 1.41M | -32% | 7+ qtrs | AI quality score is Pro: unlock with a free trial | 13F | |
| 12 | EAGLE MATERIALS INC | Materials | $103.2M | 1.0% | 459K | -25% | 7+ qtrs | AI quality score is Pro: unlock with a free trial | 13F | |
| 13 | Stride, Inc. | Consumer Discretionary | $102.8M | 1.0% | 1.19M | -23% | 7+ qtrs | AI quality score is Pro: unlock with a free trial | 13F | |
| 14 | XPO, Inc. | Industrials | $102.6M | 1.0% | 500K | -23% | 7+ qtrsTrimmed 6 qtrs in a row | AI quality score is Pro: unlock with a free trial | 13F | |
| 15 | BridgeBio Pharma, Inc. | Healthcare | $102.3M | 0.9% | 1.37M | +43% | 7+ qtrsAdded 4 qtrs in a row | AI quality score is Pro: unlock with a free trial | 13F | |
| 16 | Liberty Energy Inc. | Energy | $97.4M | 0.9% | 3.72M | +49% | 3 qtrsAdded 3 qtrs in a row | AI quality score is Pro: unlock with a free trial | 13F | |
| 17 | SANMINA CORP | Technology | $95.7M | 0.9% | 378K | -41% | 7+ qtrs | AI quality score is Pro: unlock with a free trial | 13F | |
| 18 | Ultra Clean Holdings, Inc. | Technology | $95.2M | 0.9% | 668K | -63% | 7+ qtrsTrimmed 2 qtrs in a row | AI quality score is Pro: unlock with a free trial | 13F | |
| 19 | Ultragenyx Pharmaceutical Inc. | Healthcare | $95.1M | 0.9% | 2.85M | +30% | 5 qtrsAdded 5 qtrs in a row | AI quality score is Pro: unlock with a free trial | 13F | |
| 20 | INSULET CORP | Healthcare | $94.8M | 0.9% | 623K | +261% | 7+ qtrsAdded 3 qtrs in a row | AI quality score is Pro: unlock with a free trial | 13F | |
| 21 | MODINE MANUFACTURING CO | Industrials | $91.8M | 0.9% | 344K | +69% | 7+ qtrsAdded 2 qtrs in a row | AI quality score is Pro: unlock with a free trial | 13F | |
| 22 | FLOWSERVE CORP | Industrials | $91.5M | 0.8% | 1.23M | +167% | 4 qtrsAdded 4 qtrs in a row | AI quality score is Pro: unlock with a free trial | 13F | |
| 23 | KIRBY CORP | Industrials | $90.6M | 0.8% | 667K | +3% | 7+ qtrsAdded 3 qtrs in a row | AI quality score is Pro: unlock with a free trial | 13F | |
| 24 | Allegiant Travel CO | Industrials | $90.0M | 0.8% | 765K | +27% | 4 qtrsAdded 2 qtrs in a row | AI quality score is Pro: unlock with a free trial | 13F | |
| 25 | — | EVERPURE INC - CL A | — | $88.2M | 0.8% | 1.12M | +19% | — | — | 13F |
| 26 | $AMTM | Amentum Holdings, Inc. | Industrials | $85.7M | 0.8% | 4.14M | -16% | |||
| 27 | $KYMR | Kymera Therapeutics, Inc. | Healthcare | $85.0M | 0.8% | 741K | -2% | |||
| 28 | $INSM | INSMED Inc | Healthcare | $84.8M | 0.8% | 795K | +69% | |||
| 29 | $ATI | ATI INC | Materials | $82.8M | 0.8% | 420K | -40% | |||
| 30 | $RNST | RENASANT CORP | Financials | $75.7M | 0.7% | 1.78M | +4% | |||
| 31 | $ALAB | Astera Labs, Inc. | Technology | $74.7M | 0.7% | 155K | -78% | |||
| 32 | $RCL | ROYAL CARIBBEAN CRUISES LTD | Industrials | $74.3M | 0.7% | 234K | -2% | |||
| 33 | $PVLA | PALVELLA THERAPEUTICS, INC. | Healthcare | $73.2M | 0.7% | 479K | +28% | |||
| 34 | $DT | Dynatrace, Inc. | Technology | $71.8M | 0.7% | 1.64M | New | |||
| 35 | $INDI | indie Semiconductor, Inc. | Technology | $71.5M | 0.7% | 15.91M | -17% | |||
| 36 | $ADC | AGREE REALTY CORP | Real Estate | $71.4M | 0.7% | 943K | -14% | |||
| 37 | $LUNR | Intuitive Machines, Inc. | Technology | $67.9M | 0.6% | 3.17M | -10% | |||
| 38 | $JAZZ | Jazz Pharmaceuticals plc | Healthcare | $66.8M | 0.6% | 277K | -46% | |||
| 39 | $SAIA | SAIA INC | Industrials | $63.8M | 0.6% | 151K | -17% | |||
| 40 | $ENTG | ENTEGRIS INC | Materials | $63.3M | 0.6% | 352K | -53% | |||
| 41 | $FBP | FIRST BANCORP /PR/ | Financials | $63.1M | 0.6% | 2.42M | -17% | |||
| 42 | $CRCL | Circle Internet Group, Inc. | Financials | $62.9M | 0.6% | 1.00M | -35% | |||
| 43 | $HUBB | HUBBELL INC | Technology | $62.8M | 0.6% | 120K | +379% | |||
| 44 | $AXSM | Axsome Therapeutics, Inc. | Healthcare | $62.2M | 0.6% | 254K | +25% | |||
| 45 | $FLEX | FLEX LTD. | Technology | $61.9M | 0.6% | 382K | +6% | |||
| 46 | $WTFC | WINTRUST FINANCIAL CORP | Financials | $61.8M | 0.6% | 385K | -17% | |||
| 47 | $TDW | TIDEWATER INC | Industrials | $59.6M | 0.6% | 895K | -17% | |||
| 48 | $ATMU | Atmus Filtration Technologies Inc. | Industrials | $59.0M | 0.6% | 1.16M | +56% | |||
| 49 | $JBL | JABIL INC | Technology | $58.7M | 0.6% | 152K | -8% | |||
| 50 | $BLDR | Builders FirstSource, Inc. | Industrials | $58.3M | 0.5% | 651K | -24% | |||
| 51 | $SNOW | Snowflake Inc. | Technology | $57.6M | 0.5% | 226K | +218% | |||
| 52 | $TRVI | Trevi Therapeutics, Inc. | Healthcare | $57.3M | 0.5% | 3.07M | +54% | |||
| 53 | $GENI | Genius Sports Ltd | Communication Services | $57.2M | 0.5% | 9.43M | +90% | |||
| 54 | $BWIN | Baldwin Insurance Group, Inc. | Financials | $55.8M | 0.5% | 2.10M | +90% | |||
| 55 | $VERA | Vera Therapeutics, Inc. | Healthcare | $55.6M | 0.5% | 1.30M | +135% | |||
| 56 | $URGN | UroGen Pharma Ltd. | Healthcare | $55.5M | 0.5% | 1.51M | +15% | |||
| 57 | $MKSI | MKS INC | Technology | $53.7M | 0.5% | 121K | -25% | |||
| 58 | $GTX | Garrett Motion Inc. | Industrials | $53.1M | 0.5% | 1.47M | -45% | |||
| 59 | $ELAN | Elanco Animal Health Inc | Healthcare | $52.6M | 0.5% | 2.14M | -9% | |||
| 60 | $EBC | Eastern Bankshares, Inc. | Financials | $51.9M | 0.5% | 2.33M | -18% | |||
| 61 | $FAF | First American Financial Corp | Financials | $51.4M | 0.5% | 749K | -15% | |||
| 62 | $APG | APi Group Corp | Industrials | $51.0M | 0.5% | 1.20M | +120% | |||
| 63 | $STAG | STAG Industrial, Inc. | Real Estate | $50.7M | 0.5% | 1.33M | -11% | |||
| 64 | $WFRD | Weatherford International plc | Energy | $50.3M | 0.5% | 617K | -15% | |||
| 65 | $AIR | AAR CORP | Industrials | $50.1M | 0.5% | 350K | -18% | |||
| 66 | $CRS | CARPENTER TECHNOLOGY CORP | Materials | $49.6M | 0.5% | 80K | -19% | |||
| 67 | $PRDO | PERDOCEO EDUCATION Corp | Consumer Discretionary | $49.5M | 0.5% | 1.55M | -16% | |||
| 68 | $ACHC | Acadia Healthcare Company, Inc. | Healthcare | $49.4M | 0.5% | 1.67M | +191% | |||
| 69 | $CGNX | COGNEX CORP | Technology | $48.5M | 0.5% | 670K | -4% | |||
| 70 | $FR | FIRST INDUSTRIAL REALTY TRUST INC | Real Estate | $48.4M | 0.5% | 789K | -17% | |||
| 71 | $DDOG | Datadog, Inc. | Technology | $47.4M | 0.4% | 182K | +95% | |||
| 72 | $NTRA | Natera, Inc. | Healthcare | $47.1M | 0.4% | 174K | -41% | |||
| 73 | $PRIM | Primoris Services Corp | Energy | $46.5M | 0.4% | 469K | New | |||
| 74 | $AR | ANTERO RESOURCES Corp | Energy | $46.3M | 0.4% | 1.32M | -2% | |||
| 75 | $FICO | FAIR ISAAC CORP | Technology | $45.7M | 0.4% | 38K | +22% | |||
| 76 | $MPWR | MONOLITHIC POWER SYSTEMS, INC. | Technology | $45.2M | 0.4% | 33K | -59% | |||
| 77 | $TFIN | Triumph Financial, Inc. | Financials | $44.6M | 0.4% | 584K | -9% | |||
| 78 | $DAR | DARLING INGREDIENTS INC. | Consumer Staples | $43.4M | 0.4% | 794K | -68% | |||
| 79 | $SARO | StandardAero, Inc. | Industrials | $43.3M | 0.4% | 1.45M | New | |||
| 80 | $VOYG | Voyager Technologies, Inc./TX | Industrials | $43.3M | 0.4% | 1.34M | +9% | |||
| 81 | $SNX | TD SYNNEX CORP | Technology | $43.3M | 0.4% | 162K | -45% | |||
| 82 | $CHE | CHEMED CORP | Healthcare | $42.2M | 0.4% | 91K | +44% | |||
| 83 | $MDU | MDU RESOURCES GROUP INC | Materials | $42.2M | 0.4% | 1.99M | -21% | |||
| 84 | $RRX | REGAL REXNORD CORP | Industrials | $42.1M | 0.4% | 177K | -19% | |||
| 85 | $PGY | Pagaya Technologies Ltd. | Financials | $41.9M | 0.4% | 2.30M | +1067% | |||
| 86 | $ACVA | ACV Auctions Inc. | Industrials | $41.8M | 0.4% | 5.81M | +48% | |||
| 87 | $KBR | KBR, INC. | Industrials | $41.6M | 0.4% | 1.21M | -16% | |||
| 88 | $RYZ | Ryerson Holding Corp | Consumer Discretionary | $41.4M | 0.4% | 1.68M | +11% | |||
| 89 | $ERO | Ero Copper Corp. | Materials | $41.2M | 0.4% | 1.54M | +23% | |||
| 90 | $NSIT | INSIGHT ENTERPRISES INC | Consumer Discretionary | $41.1M | 0.4% | 338K | -33% | |||
| 91 | $WSFS | WSFS FINANCIAL CORP | Financials | $41.1M | 0.4% | 535K | -21% | |||
| 92 | $TER | TERADYNE, INC | Technology | $40.9M | 0.4% | 85K | -54% | |||
| 93 | $GPOR | GULFPORT ENERGY CORP | Energy | $40.9M | 0.4% | 241K | +8% | |||
| 94 | $SBCF | SEACOAST BANKING CORP OF FLORIDA | Financials | $40.8M | 0.4% | 1.23M | +23% | |||
| 95 | $CRDO | Credo Technology Group Holding Ltd | Technology | $40.7M | 0.4% | 150K | +33% | |||
| 96 | $NET | Cloudflare, Inc. | Technology | $40.6M | 0.4% | 165K | +5% | |||
| 97 | $APGE | Apogee Therapeutics, Inc. | Healthcare | $40.3M | 0.4% | 304K | -71% | |||
| 98 | $LMND | Lemonade, Inc. | Financials | $39.7M | 0.4% | 610K | -9% | |||
| 99 | $IRT | INDEPENDENCE REALTY TRUST, INC. | Real Estate | $39.7M | 0.4% | 2.38M | -17% | |||
| 100 | $PWR | QUANTA SERVICES, INC. | Industrials | $38.9M | 0.4% | 54K | -5% | |||
| 101 | $FIP | FTAI Infrastructure Inc. | Industrials | $38.3M | 0.4% | 8.26M | +9% | |||
| 102 | $CVSA | Covista Inc. | Consumer Discretionary | $37.7M | 0.3% | 303K | -21% | |||
| 103 | $PLNT | Planet Fitness, Inc. | Communication Services | $37.6M | 0.3% | 721K | +42% | |||
| 104 | $ROCK | GIBRALTAR INDUSTRIES, INC. | Materials | $37.4M | 0.3% | 830K | +21% | |||
| 105 | $SFNC | SIMMONS FIRST NATIONAL CORP | Financials | $37.4M | 0.3% | 1.65M | -8% | |||
| 106 | $SLGN | SILGAN HOLDINGS INC | Industrials | $37.0M | 0.3% | 797K | -7% | |||
| 107 | $DXCM | DEXCOM INC | Healthcare | $36.9M | 0.3% | 547K | +8% | |||
| 108 | $SON | SONOCO PRODUCTS CO | Materials | $36.6M | 0.3% | 650K | -3% | |||
| 109 | $NVST | Envista Holdings Corp | Healthcare | $36.6M | 0.3% | 1.39M | -3% | |||
| 110 | $WAFD | WAFD INC | Financials | $36.5M | 0.3% | 952K | -11% | |||
| 111 | $LCII | LCI INDUSTRIES | Industrials | $36.2M | 0.3% | 342K | -20% | |||
| 112 | $BJ | BJ's Wholesale Club Holdings, Inc. | Consumer Staples | $35.9M | 0.3% | 412K | +29% | |||
| 113 | $RKLB | Rocket Lab Corp | Industrials | $35.8M | 0.3% | 352K | -13% | |||
| 114 | $LXP | LXP Industrial Trust | Real Estate | $35.7M | 0.3% | 663K | -19% | |||
| 115 | $FBK | FB Financial Corp | Financials | $35.6M | 0.3% | 643K | -2% | |||
| 116 | $CIFR | Cipher Digital Inc. | Financials | $35.6M | 0.3% | 1.45M | -53% | |||
| 117 | $IONQ | IonQ, Inc. | Technology | $35.5M | 0.3% | 666K | +6169% | |||
| 118 | $NMIH | NMI Holdings, Inc. | Financials | $35.4M | 0.3% | 861K | -15% | |||
| 119 | $AVTR | Avantor, Inc. | Healthcare | $34.7M | 0.3% | 3.51M | +73% | |||
| 120 | $ALKS | Alkermes plc. | Healthcare | $34.6M | 0.3% | 660K | New | |||
| 121 | $SIGI | SELECTIVE INSURANCE GROUP INC | Financials | $34.5M | 0.3% | 356K | -51% | |||
| 122 | $ARW | ARROW ELECTRONICS, INC. | Technology | $34.3M | 0.3% | 161K | -43% | |||
| 123 | $LGIH | LGI Homes, Inc. | Industrials | $33.5M | 0.3% | 526K | -16% | |||
| 124 | $EPRT | ESSENTIAL PROPERTIES REALTY TRUST, INC. | Real Estate | $33.4M | 0.3% | 1.12M | -12% | |||
| 125 | $HOPE | HOPE BANCORP INC | Financials | $33.1M | 0.3% | 2.42M | -20% | |||
| 126 | $MLI | MUELLER INDUSTRIES INC | Materials | $33.1M | 0.3% | 269K | -5% | |||
| 127 | $ETOR | eToro Group Ltd. | Financials | $32.8M | 0.3% | 832K | New | |||
| 128 | $CDP | COPT DEFENSE PROPERTIES | Real Estate | $32.7M | 0.3% | 898K | -0.7% | |||
| 129 | $RBC | RBC Bearings INC | Industrials | $32.6M | 0.3% | 51K | -5% | |||
| 130 | $MMSI | MERIT MEDICAL SYSTEMS INC | Healthcare | $32.5M | 0.3% | 469K | +9% | |||
| 131 | $MTDR | Matador Resources Co | Energy | $32.5M | 0.3% | 653K | -21% | |||
| 132 | $OLED | UNIVERSAL DISPLAY CORP \PA\ | Technology | $31.6M | 0.3% | 365K | +231% | |||
| 133 | $ST | Sensata Technologies Holding plc | Technology | $31.4M | 0.3% | 658K | New | |||
| 134 | $ZS | Zscaler, Inc. | Technology | $31.4M | 0.3% | 222K | +545% | |||
| 135 | $MANE | Veradermics, Inc | Healthcare | $31.3M | 0.3% | 255K | New | |||
| 136 | $UAMY | UNITED STATES ANTIMONY CORP | Materials | $31.2M | 0.3% | 4.30M | New | |||
| 137 | $CWK | Cushman & Wakefield Ltd. | Real Estate | $30.9M | 0.3% | 2.31M | -18% | |||
| 138 | $TILE | INTERFACE INC | Consumer Discretionary | $30.1M | 0.3% | 840K | -21% | |||
| 139 | $TKR | TIMKEN CO | Industrials | $30.0M | 0.3% | 207K | -45% | |||
| 140 | $BURL | Burlington Stores, Inc. | Consumer Discretionary | $29.9M | 0.3% | 95K | -56% | |||
| 141 | $MOH | MOLINA HEALTHCARE, INC. | Healthcare | $29.4M | 0.3% | 128K | New | |||
| 142 | $UTL | UNITIL CORP | Utilities | $29.2M | 0.3% | 553K | +0.8% | |||
| 143 | $ABG | ASBURY AUTOMOTIVE GROUP INC | Consumer Discretionary | $28.9M | 0.3% | 144K | -18% | |||
| 144 | $BDC | BELDEN INC. | Materials | $28.8M | 0.3% | 240K | -47% | |||
| 145 | $PR | Permian Resources Corp | Energy | $28.7M | 0.3% | 1.56M | -25% | |||
| 146 | $KNF | Knife River Corp | Materials | $28.4M | 0.3% | 339K | -17% | |||
| 147 | $RXO | RXO, Inc. | Industrials | $28.3M | 0.3% | 1.03M | -61% | |||
| 148 | $TNET | TRINET GROUP, INC. | Industrials | $28.2M | 0.3% | 569K | -1% | |||
| 149 | $ODD | Oddity Tech Ltd | Consumer Staples | $27.8M | 0.3% | 1.84M | +131% | |||
| 150 | $FLR | FLUOR CORP | Industrials | $27.2M | 0.3% | 520K | -23% |
What changed in Q2 2026
Against the previous quarter's 13F: 33 new, 96 added to, 171 trimmed, 24 sold out. Share-count changes; largest moves by dollar size first.
New positions (33)
$DTDynatrace, Inc.$71.8M
first bought this quarter
$PRIMPrimoris Services Corp$46.5M
first bought this quarter
$SAROStandardAero, Inc.$43.3M
first bought this quarter
$ALKSAlkermes plc.$34.6M
first bought this quarter
$ETOReToro Group Ltd.$32.8M
first bought this quarter
$STSensata Technologies Holding plc$31.4M
first bought this quarter
+27 more in the Excel export
Added to (96)
now $144.5M · held 2 qtrs, 2 adds in a row
now $94.8M · held 7+ qtrs, 3 adds in a row
$FLSFLOWSERVE CORP+167%
now $91.5M · held 4 qtrs, 4 adds in a row
$HUBBHUBBELL INC+379%
now $62.8M · held 7+ qtrs
now $112.2M · held 7+ qtrs
$SNOWSnowflake Inc.+218%
now $57.6M · held 6 qtrs
+90 more in the Excel export
Trimmed (171)
$ALABAstera Labs, Inc.-78%
now $74.7M · held 6 qtrs, 2 trims in a row
now $95.2M · held 7+ qtrs, 2 trims in a row
$APGEApogee Therapeutics, Inc.-71%
now $40.3M · held 7+ qtrs
$DARDARLING INGREDIENTS INC.-68%
now $43.4M · held 7+ qtrs, 4 trims in a row
$SIMOSilicon Motion Technology CORP-99%
now $893K
$COHUCOHU INC-84%
now $14.8M
+165 more in the Excel export
Sold out (24)
$MRVLMarvell Technology, Inc.was $53.6M
held 6+ qtrs
$NUVLNuvalent, Inc.was $40.5M
held 2 qtrs
$DIODDIODES INC /DEL/was $40.4M
held 6+ qtrs
$QDELQuidelOrtho Corpwas $28.8M
held 5 qtrs
$DPZDOMINOS PIZZA INCwas $22.5M
held 6+ qtrs
$ECGEverus Construction Group, Inc.was $16.9M
+18 more in the Excel export
Holdings by quarter
Every 13F FRONTIER CAPITAL MANAGEMENT CO LLC has filed, 41 earlier quarters. Pick one to see what it held then.
Is it too late to follow FRONTIER CAPITAL MANAGEMENT?
Q2 2026 13F filed with the SEC on Aug 14, 2026. Prices are closing prices as of Oct 27, 2026.
Average quality of FRONTIER CAPITAL MANAGEMENT's top 20 holdings: 55/100 (our AI quality score, weighted by position size; 19 of the 20 are scored)
Top 10 since filing
-18.2%
Value-weighted move of the 10 largest stock positions
Turnover
19%
Last quarter; 68% over the last 4
Top 10 weight
15%
Share of the stock portfolio in its 10 largest positions
Held 4+ quarters
79%
Share of portfolio value in positions held a year or more
Highest-quality names it owns(among its 100 largest positions)
The 8 highest-scoring companies in this portfolio are a Pro feature.
How these are measured
- Moves since the quarter-end and since the filing date use our own daily closing prices, from the close on (or just before) each date to the latest close.
- Turnover is the lesser of shares bought or sold in a quarter, valued at the quarter-end prices in the 13F, divided by the average of the two quarters' stock portfolio values.
- Quarters held and add/trim streaks count back only through quarters whose filed holdings add up to the filing's own cover-page total (back to Q4 2024 for this fund). A change counts as an add or a trim when the split-adjusted share count moves by more than 1%.
- Estimate, not the fund's reported cost. For each quarter in the current holding period in which the fund's share count rose (split-adjusted), we take that quarter's average daily close and weight it by the shares added; sales do not change an average cost. Quarters where the stock's price history and the 13F's own implied price disagree by more than 2x are left out.
- Put and call option rows report the value of the underlying shares, not a position the fund paid for, so they are left out of all of the above.
Portfolio Overview
FRONTIER CAPITAL MANAGEMENT CO LLC disclosed 300 positions worth $10.7B in its Form 13F-HR for Q2 2026, led by $FTAI (FTAI Aviation Ltd.) at 3.0% of the equity portfolio, followed by $GVA and $ALK. During the quarter the fund opened 33 new positions and exited 24 — including a new stake in $DT and a full exit from $MRVL. The portfolio is most concentrated in Industrials (26.1% of disclosed assets). All figures are sourced directly from FRONTIER CAPITAL MANAGEMENT CO LLC’s Form 13F-HR filing with the SEC under CIK 351173.
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