13F Filings History of FRONTIER CAPITAL MANAGEMENT CO LLC

Latest 13F report
Q4 2025 - 17 Feb 2026
Value $
$9,423,596,169
Signature - Title
Robert E. Phay, Jr. - Chief Compliance Officer
Location
Boston, MA
Summary
This page shows a list of all the recent 13F filings made by FRONTIER CAPITAL MANAGEMENT CO LLC. Form 13F is required to be filed within 45 days of the end of a calendar quarter. FRONTIER CAPITAL MANAGEMENT CO LLC reported 295 stock holdings with total value $9,423,596,169 as of Q4 2025. Top holdings included FTAI, AMTM, GVA, ATI, and MDB.

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Holdings Value
Quarter Holdings Value $ Bought Sold Net Top Holdings Form Type Filing Time
Q4 2025 295 $9,423,596,169 +$1,447,244,710 -$3,540,729,293 -$2,093,484,583 FTAI, AMTM, GVA, ATI, MDB 13F-HR 17 Feb 2026, 09:04
Q3 2025 297 $11,154,752,830 +$1,719,422,526 -$2,095,124,803 -$375,702,277 FTAI, EXP, TER, BLDR, MPWR 13F-HR 14 Nov 2025, 10:55
Q2 2025 294 $10,801,284,212 +$1,945,482,638 -$1,461,862,586 +$483,620,052 FTAI, ATI, MAT, EXP, XPO 13F-HR 14 Aug 2025, 09:41
Q1 2025 283 $9,145,023,899 +$1,182,011,225 -$1,473,827,483 -$291,816,258 FTAI, BECN, MAT, EXP, ATI 13F-HR 15 May 2025, 10:09
Q4 2024 285 $10,522,840,085 +$1,538,297,385 -$1,711,045,409 -$172,748,024 FTAI, BECN, ATI, XPO, EXP 13F-HR 14 Feb 2025, 10:49
Q3 2024 281 $10,623,505,130 +$1,267,708,631 -$1,534,326,924 -$266,618,293 FTAI, EXP, ATI, BECN, MAT 13F-HR 14 Nov 2024, 13:11
Q2 2024 279 $10,099,282,807 +$943,399,674 -$1,156,402,584 -$213,002,910 FTAI, BECN, ATI, UCTT, EXP 13F-HR 14 Aug 2024, 10:41
Q1 2024 269 $10,699,653,463 +$1,354,716,992 -$1,496,671,217 -$141,954,225 FTAI, EXP, XPO, BECN, BLDR 13F-HR 15 May 2024, 10:33
Q4 2023 263 $9,899,830,004 +$1,308,433,241 -$1,550,010,901 -$241,577,660 FTAI, EXP, BLDR, BECN, KBR 13F-HR 14 Feb 2024, 10:46
Q3 2023 267 $9,097,441,826 +$923,050,926 -$1,693,539,854 -$770,488,928 KBR, XPO, FTAI, MAT, EXP 13F-HR 14 Nov 2023, 09:06
Q2 2023 261 $10,436,695,400 +$1,566,722,423 -$1,555,011,583 +$11,710,840 KBR, XPO, EXP, BECN, BLDR 13F-HR 14 Aug 2023, 07:53
Q1 2023 257 $9,669,486,427 +$1,273,058,881 -$1,404,878,368 -$131,819,487 KBR, AON, ARRY, ATI, G 13F-HR 15 May 2023, 09:10
Q4 2022 262 $9,181,497,330 +$1,094,122,419 -$1,163,321,021 -$69,198,602 KBR, BLDR, AON, MAT, CZR 13F-HR 14 Feb 2023, 10:26
Q3 2022 268 $8,528,902,000 +$850,602,814 -$753,408,457 +$97,194,357 MAT, KBR, CTRA, LPLA, AON 13F-HR 14 Nov 2022, 16:01
Q2 2022 274 $8,686,054,000 +$1,013,367,552 -$1,237,163,779 -$223,796,227 MAT, KBR, PANW, LPLA, AON 13F-HR 20 Jul 2022, 13:55
Q1 2022 267 $11,042,304,000 +$840,370,786 -$1,411,518,548 -$571,147,762 MAT, KBR, PANW, CZR, LPLA 13F-HR 14 Apr 2022, 14:28
Q4 2021 274 $12,650,958,000 +$1,194,350,368 -$1,656,171,450 -$461,821,082 MAT, CZR, PANW, SIVB, KBR 13F-HR 19 Jan 2022, 16:54
Q3 2021 280 $12,724,268,000 +$1,161,404,644 -$2,049,769,276 -$888,364,632 CZR, MAT, SQ, SIVB, PANW 13F-HR 19 Oct 2021, 10:58
Q2 2021 284 $13,652,443,000 +$1,697,031,678 -$2,096,309,625 -$399,277,947 CZR, MAT, SQ, SIVB, PWR 13F-HR 09 Aug 2021, 16:40
Q1 2021 276 $13,217,270,000 +$2,030,470,892 -$3,219,735,435 -$1,189,264,543 CZR, MAT, SQ, SIVB, PWR 13F-HR 13 May 2021, 14:53
Q4 2020 284 $13,510,817,000 +$1,744,450,682 -$2,348,239,598 -$603,788,916 CZR, SQ, MAT, PWR, SPLK 13F-HR 19 Jan 2021, 17:04
Q3 2020 291 $11,451,588,000 +$1,411,323,174 -$2,070,089,035 -$658,765,861 CZR, SQ, PODD, PWR, AMD 13F-HR 16 Nov 2020, 09:37
Q2 2020 291 $11,298,735,000 +$1,499,924,129 -$1,760,203,261 -$260,279,132 SQ, ERI, GPN, FMC, INFO 13F-HR 17 Jul 2020, 14:08
Q1 2020 275 $8,901,768,000 +$1,122,233,524 -$2,093,832,433 -$971,598,909 DG, GPN, AON, FMC, LHX 13F-HR 16 Apr 2020, 16:28
Q4 2019 281 $13,536,232,000 +$1,495,951,909 -$1,802,711,809 -$306,759,900 AON, GPN, ERI, KBR, DG 13F-HR 14 Feb 2020, 12:10
Q3 2019 289 $12,770,990,000 +$1,936,454,743 -$2,274,305,450 -$337,850,707 DG, AON, GPN, KBR, WEX 13F-HR 14 Nov 2019, 14:34
Q2 2019 287 $13,258,886,000 +$1,482,970,997 -$2,818,966,462 -$1,335,995,465 GPN, DG, WEX, KBR, AON 13F-HR 14 Aug 2019, 11:49
Q1 2019 295 $14,062,223,000 +$1,719,010,682 -$2,235,561,284 -$516,550,602 GPN, SSNC, ATI, COO, WEX 13F-HR 07 May 2019, 09:18
Q4 2018 287 $12,386,779,000 +$1,341,331,966 -$1,683,557,330 -$342,225,364 SMTC, COO, GPN, ATI, SSNC 13F-HR 25 Jan 2019, 15:19
Q3 2018 287 $15,526,653,000 +$2,244,295,847 -$1,684,834,830 +$559,461,017 ATI, COO, GPN, SMTC, PODD 13F-HR 30 Oct 2018, 09:36
Q2 2018 298 $14,115,073,000 +$1,587,745,034 -$1,786,121,782 -$198,376,748 SMTC, GPN, ATI, COO, QRVO 13F-HR 03 Aug 2018, 06:05
Q1 2018 311 $13,739,997,000 +$1,330,367,572 -$1,241,694,755 +$88,672,817 GPN, PODD, ATI, CNDT, ZTS 13F-HR 30 Apr 2018, 17:26
Q4 2017 320 $13,679,893,000 +$989,955,656 -$1,681,624,257 -$691,668,601 ATI, BECN, GPN, IDTI, RJF 13F-HR 18 Jan 2018, 16:04
Q3 2017 321 $13,861,776,000 +$986,849,699 -$1,568,358,357 -$581,508,658 EEFT, COO, EA, QRVO, GPN 13F-HR 31 Oct 2017, 11:37
Q2 2017 322 $13,692,435,000 +$1,278,247,933 -$1,505,849,630 -$227,601,697 COO, BECN, EEFT, EA, UAL 13F-HR 04 Aug 2017, 06:02
Q1 2017 323 $13,537,858,000 +$1,030,664,489 -$1,182,530,182 -$151,865,693 BECN, EA, COO, EEFT, QRVO 13F-HR 10 May 2017, 17:24
Q4 2016 321 $13,003,442,000 +$1,884,311,461 -$1,747,143,698 +$137,167,763 UAL, BECN, EA, COO, EEFT 13F-HR 03 Feb 2017, 12:31
Q3 2016 344 $12,482,728,000 +$1,123,806,607 -$1,714,995,202 -$591,188,595 EA, COO, EXP, EEFT, BECN 13F-HR 14 Nov 2016, 11:14
Q2 2016 340 $12,174,750,000 +$986,103,276 -$1,557,400,372 -$571,297,096 EA, QRVO, BECN, COO, CCOI 13F-HR 02 Aug 2016, 13:33
Q1 2016 342 $12,563,851,000 +$1,629,896,036 -$1,099,980,200 +$529,915,836 EA, UAL, CCOI, RJF, SBNY 13F-HR 04 May 2016, 13:18
Q4 2015 351 $12,080,355,000 +$1,753,411,817 -$1,864,834,574 -$111,422,757 EA, RJF, SBNY, UAL, PRXL 13F-HR 27 Jan 2016, 14:58
Q3 2015 352 $11,887,126,000 +$1,219,587,085 -$1,695,602,333 -$476,015,248 EA, MD, RJF, SBNY, FTNT 13F-HR 23 Oct 2015, 10:14
Q2 2015 363 $13,930,254,000 +$1,643,100,039 -$1,594,195,884 +$48,904,155 RJF, EA, FTNT, QRVO, DXCM 13F-HR 24 Jul 2015, 12:25
Q1 2015 363 $13,850,160,000 +$1,652,802,446 -$2,222,275,221 -$569,472,775 RJF, EA, FTNT, MD, CRZO 13F-HR 04 May 2015, 11:20
Q4 2014 359 $13,589,573,000 +$1,773,405,463 -$1,485,601,022 +$287,804,441 RJF, EA, ALKS, MD, CRZO 13F-HR 23 Jan 2015, 06:11
Q3 2014 349 $12,420,279,000 +$1,114,506,450 -$1,373,534,195 -$259,027,745 EXP, CRZO, RJF, COO, NXPI 13F-HR 31 Oct 2014, 12:01
Q2 2014 346 $13,588,759,000 +$1,091,662,875 -$1,632,636,595 -$540,973,720 CRZO, EXP, ALKS, RJF, SDOCQ 13F-HR 01 Aug 2014, 16:13
Q1 2014 348 $13,818,150,000 +$1,612,053,068 -$1,843,989,227 -$231,936,159 MD, MTZ, CRZO, EXP, RJF 13F-HR 30 Apr 2014, 16:23
Q4 2013 309 $13,487,110,000 $0 $0 $0 MD, BEAV, B108PS, UAL, RJF 13F-HR 31 Jan 2014, 10:37