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Livermore
Livermore
ZHEN

Frontier Capital Management Co LLC

SEC CIK
0000351173
Latest filing
Aug 14, 2026

The latest 13F from Frontier Capital Management Co LLC covers Q2 2026 (filed Aug 14, 2026): 300 long positions worth $10.7B. The top 10 holdings make up 14.5% of the portfolio, and the largest is FTAI Aviation Ltd. (FTAI) at 3.0%. Livermore has 22 filings on Form 13F from this institution, going back to Q1 2021.

What changed in Q2 2026

Share counts compared with Q1 2026: how many positions were new, added to, reduced or sold out, and the biggest buys and sells. Dollar amounts are estimated at the quarter-end prices implied by the filing.

Full comparison
New
33
Est. +$702.3M
Added
96
Est. +$1.26B
Reduced
171
Est. −$2.65B
Sold out
24
Est. −$347.1M

Top 5 holdings

Share of this quarter's portfolio value

  1. FTAIFTAI Aviation Ltd.
    3.0%$320.2MHistory
  2. GVAGranite Construction Inc
    1.6%$176.9MHistory
  3. ALKAlaska Air Group, Inc.
    1.6%$176.7MHistory
  4. AAOIApplied Optoelectronics, Inc.
    1.3%$144.5MHistory
  5. AKAMAkamai Technologies Inc
    1.3%$134.4MHistory

Biggest buys

New and added positions, by estimated amount bought

  1. AAOIApplied Optoelectronics, Inc.
    +$102.4MAddedHistory
  2. DTDynatrace, Inc.
    +$71.8MNewHistory
  3. PODDInsulet Corp
    +$68.5MAddedHistory
  4. FLSFlowserve Corp
    +$57.2MAddedHistory
  5. HUBBHubbell Inc
    +$49.7MAddedHistory

Largest weight increases

New and added positions, by percentage points of the portfolio gained

  1. AAOIApplied Optoelectronics, Inc.
    +1.10 pp0.2% → 1.3%History
  2. DTDynatrace, Inc.
    +0.67 pp0.0% → 0.7%History
  3. LSCCLattice Semiconductor Corp
    +0.59 pp0.6% → 1.2%History
  4. PODDInsulet Corp
    +0.51 pp0.4% → 0.9%History
  5. MDBMongoDB, Inc.
    +0.51 pp0.5% → 1.0%History

Biggest sells

Reduced and sold-out positions, by estimated amount sold

  1. ALABAstera Labs, Inc.
    −$257.7MReducedHistory
  2. UCTTUltra Clean Holdings, Inc.
    −$159.7MReducedHistory
  3. APGEApogee Therapeutics, Inc.
    −$101.0MReducedHistory
  4. DARDarling Ingredients Inc.
    −$90.8MReducedHistory
  5. SIMOSilicon Motion Technology CORP
    −$89.9MReducedHistory

Largest weight decreases

Reduced and sold-out positions, by percentage points of the portfolio lost

  1. DARDarling Ingredients Inc.
    −1.16 pp1.6% → 0.4%History
  2. CRCLCircle Internet Group, Inc.
    −0.93 pp1.5% → 0.6%History
  3. MRVLMarvell Technology, Inc.
    −0.55 pp0.6% → 0.0%History
  4. SILASila Realty Trust, Inc.
    −0.55 pp0.7% → 0.1%History
  5. APGEApogee Therapeutics, Inc.
    −0.55 pp0.9% → 0.4%History

Metrics

13F metrics for Q2 2026, computed only from the numbers in the filings. Definitions below.

Portfolio value
$10.7B
+$998.7M (+10.3%) vs. prior quarter
Positions
300
+9 vs. prior quarter
Top 10 concentration
14.5%
Top 10 as share of value
Turnover
19.1%
Q2 2026, one quarter
Average holding period
11.6 quarters
Weighted by value

How these are calculated

  • Portfolio value: the market value of all long positions in the 13F, as reported at quarter end, excluding options.
  • Top 10 concentration: the combined value of the 10 largest positions as a share of portfolio value.
  • Turnover: the smaller of this quarter's estimated purchases and estimated sales, divided by the average of this and last quarter's portfolio value. Estimates multiply the change in shares by the quarter-end price implied by the filing (market value divided by shares); new positions use this quarter's value and sold-out positions last quarter's. Only positions reported in shares count, and it is not calculated when the previous quarter was not filed.
  • Average holding period: how many consecutive quarters each current position has been held (including this one; a quarter without the position or without a filing starts the count over), weighted by this quarter's value. Counting starts with the first 13F in Livermore (Q1 2021), so positions held before then are understated.

13F filings by quarter

22 quarters, going back to Q1 2021. Bars show each quarter's 13F portfolio value; quarters without a filing are left blank.

Peak $13.7B (Q2 2021)

Q1 2021: $13.2BQ2 2021: $13.7BQ3 2021: $12.7BQ4 2021: $12.7BQ1 2022: $11.0BQ2 2022: $8.69BQ3 2022: $8.53BQ4 2022: $9.18BQ1 2023: $9.67BQ2 2023: $10.4BQ3 2023: $9.10BQ4 2023: $9.90BQ1 2024: $10.7BQ2 2024: $10.1BQ3 2024: $10.6BQ4 2024: $10.5BQ1 2025: $9.15BQ2 2025: $10.8BQ3 2025: $11.2BQ4 2025: $9.42BQ1 2026: $9.73BQ2 2026: $10.7B
Q1 2021Q2 2026
13F filings of Frontier Capital Management Co LLC by quarter
QuarterFiledPositionsValueTop 3 holdingsChangesFiling
Q2 2026Aug 14, 2026300$10.7BFTAIGVAALKvs. Q1 2026SEC
Q1 2026May 15, 2026291$9.73BFTAIDARUTHRvs. Q4 2025SEC
Q4 2025Feb 17, 2026295$9.42BFTAIAMTMGVAvs. Q3 2025SEC
Q3 2025Nov 14, 2025297$11.2BFTAIEXPTERvs. Q2 2025SEC
Q2 2025Aug 14, 2025294$10.8BFTAIATIMATvs. Q1 2025SEC
Q1 2025May 15, 2025283$9.15BFTAIBECNMATvs. Q4 2024SEC
Q4 2024Feb 14, 2025285$10.5BFTAIBECNATIvs. Q3 2024SEC
Q3 2024Nov 14, 2024281$10.6BFTAIEXPATIvs. Q2 2024SEC
Q2 2024Aug 14, 2024279$10.1BFTAIBECNATIvs. Q1 2024SEC
Q1 2024May 15, 2024269$10.7BFTAIEXPXPOvs. Q4 2023SEC
Q4 2023Feb 14, 2024263$9.90BFTAIEXPBLDRvs. Q3 2023SEC
Q3 2023Nov 14, 2023267$9.10BKBRXPOFTAIvs. Q2 2023SEC
Q2 2023Aug 14, 2023261$10.4BKBRXPOEXPvs. Q1 2023SEC
Q1 2023May 15, 2023257$9.67BKBRAONARRYvs. Q4 2022SEC
Q4 2022Feb 14, 2023262$9.18BKBRBLDRAONvs. Q3 2022SEC
Q3 2022Nov 14, 2022268$8.53BMATKBRCTRAvs. Q2 2022SEC
Q2 2022Jul 20, 2022274$8.69BMATKBRPANWvs. Q1 2022SEC
Q1 2022Apr 14, 2022267$11.0BMATKBRPANWvs. Q4 2021SEC
Q4 2021Jan 19, 2022274$12.7BMATCZRPANWvs. Q3 2021SEC
Q3 2021Oct 19, 2021280$12.7BCZRMATXYZvs. Q2 2021SEC
Q2 2021Aug 9, 2021284$13.7BCZRMATXYZvs. Q1 2021SEC
Q1 2021May 13, 2021276$13.2BCZRMATXYZ–SEC

13D and 13G filings

Companies where Frontier Capital Management Co LLC reports owning 5% or more on Schedule 13D or 13G, and its latest filings.

Current stakes of 5% or more

2 companies, largest stake first.

Companies where Frontier Capital Management Co LLC owns 5% or more
CompanyLatest formStakeChangeFirst filedLatest filingFiling
INDIindie Semiconductor, Inc.13G/A7.53%15.9M shares–Aug 14, 20261 filingAug 14, 2026SEC
FIPFTAI Infrastructure Inc.13G5.65%6.58M sharesNewFeb 17, 20261 filingFeb 17, 2026SEC

Latest filings

8 filings on file made by Frontier Capital Management Co LLC or listing it as a reporting person, newest first.

Schedule 13D and 13G filings by Frontier Capital Management Co LLC
CompanyFiled (ET)FormStakeChangeEvent dateFiling
BETRBetter Home & Finance Holding CoAug 14, 20269:14 AM ET13G/A4.78%625.6K shares−2.68 ppfrom 7.46%Below 5%Jun 30, 2026SEC
INDIindie Semiconductor, Inc.Aug 14, 20269:14 AM ET13G/A7.53%15.9M shares–Jun 30, 2026SEC
BETRBetter Home & Finance Holding CoMay 15, 20268:59 AM ET13G/A7.46%793.9K shares−1.45 ppfrom 8.91%Mar 31, 2026SEC
UCTTUltra Clean Holdings, Inc.May 15, 20268:58 AM ET13G/A3.93%1.79M shares−3.80 ppfrom 7.73%Below 5%Mar 31, 2026SEC
FIPFTAI Infrastructure Inc.Feb 17, 202611:28 AM ET13G5.65%6.58M sharesNewDec 31, 2025SEC
BETRBetter Home & Finance Holding CoFeb 17, 202611:28 AM ET13G8.91%877.8K sharesNewDec 31, 2025SEC
UCTTUltra Clean Holdings, Inc.Feb 17, 202611:27 AM ET13G7.73%3.51M sharesNewDec 31, 2025SEC
MRCMRC Global Inc.Nov 14, 20258:32 AM ET13G/A0.00%274 shares–Below 5%Sep 30, 2025SEC