Skip to main content
Livermore
Livermore
ZHEN

Port Capital LLC

SEC CIK
0001729212
Latest filing
Aug 14, 2026

The latest 13F from Port Capital LLC covers Q2 2026 (filed Aug 14, 2026): 108 long positions worth $2.45B. The top 10 holdings make up 51.1% of the portfolio, and the largest is Heico Corp (HEI.A) at 8.5%. 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
27
Est. +$29.9M
Added
30
Est. +$42.4M
Reduced
40
Est. −$108.6M
Sold out
1
Est. −$260.4K

Top 5 holdings

Share of this quarter's portfolio value

  1. HEI.AHeico Corp
    8.5%$207.5MHistory
  2. RBCRBC Bearings INC
    7.6%$187.0MHistory
  3. TDYTeledyne Technologies Inc
    6.6%$162.9MHistory
  4. APHAmphenol Corp
    5.4%$131.1MHistory
  5. SPXCSPX Technologies, Inc.
    4.5%$109.2MHistory

Share of portfolio

Top 5 holdings and the other 103 positions, by share of portfolio value

  1. HEI.A8.5%
  2. RBC7.6%
  3. TDY6.6%
  4. APH5.4%
  5. SPXC4.5%
  6. Other 103 positions67.4%

Biggest buys

New and added positions, by estimated amount bought

  1. MSIMotorola Solutions, Inc.
    +$11.5MNewHistory
  2. MDLNMedline Inc.
    +$11.1MAddedHistory
  3. RVTYRevvity, Inc.
    +$9.57MNewHistory
  4. CACICACI International Inc
    +$8.46MAddedHistory
  5. ATMUAtmus Filtration Technologies Inc.
    +$6.41MAddedHistory

Largest weight increases

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

  1. MSIMotorola Solutions, Inc.
    +0.47 pp0.0% → 0.5%History
  2. DGIIDigi International Inc
    +0.43 pp0.6% → 1.0%History
  3. RVTYRevvity, Inc.
    +0.39 pp0.0% → 0.4%History
  4. MDLNMedline Inc.
    +0.34 pp0.6% → 0.9%History
  5. ETNEaton Corp plc
    +0.27 pp1.7% → 2.0%History

Biggest sells

Reduced and sold-out positions, by estimated amount sold

  1. RBCRBC Bearings INC
    −$34.5MReducedHistory
  2. APHAmphenol Corp
    −$12.1MReducedHistory
  3. ULSUL Solutions Inc.
    −$11.1MReducedHistory
  4. HEI.AHeico Corp
    −$5.57MReducedHistory
  5. WINAWinmark Corp
    −$4.83MReducedHistory

Largest weight decreases

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

  1. ICEIntercontinental Exchange, Inc.
    −0.75 pp2.6% → 1.8%History
  2. GGGGraco Inc
    −0.72 pp3.4% → 2.7%History
  3. RBCRBC Bearings INC
    −0.67 pp8.3% → 7.6%History
  4. CPRTCopart Inc
    −0.55 pp2.2% → 1.7%History
  5. ORLYO Reilly Automotive Inc
    −0.38 pp3.9% → 3.5%History

Metrics

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

Portfolio value
$2.45B
+$201.4M (+9.0%) vs. prior quarter
Positions
108
+26 vs. prior quarter
Top 10 concentration
51.1%
Top 10 as share of value
Turnover
3.1%
Q2 2026, one quarter
Average holding period
17.7 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 $2.45B (Q2 2026)

Q1 2021: $1.77BQ2 2021: $1.92BQ3 2021: $1.98BQ4 2021: $1.63BQ1 2022: $1.45BQ2 2022: $1.28BQ3 2022: $1.23BQ4 2022: $1.38BQ1 2023: $1.54BQ2 2023: $1.66BQ3 2023: $1.60BQ4 2023: $1.79BQ1 2024: $1.99BQ2 2024: $2.00BQ3 2024: $2.23BQ4 2024: $2.19BQ1 2025: $2.21BQ2 2025: $2.35BQ3 2025: $2.40BQ4 2025: $2.32BQ1 2026: $2.25BQ2 2026: $2.45B
Q1 2021Q2 2026
13F filings of Port Capital LLC by quarter
QuarterFiledPositionsValueTop 3 holdingsChangesFiling
Q2 2026Aug 14, 2026108$2.45BHEI.ARBCTDYvs. Q1 2026SEC
Q1 2026May 15, 202682$2.25BRBCHEI.ATDYvs. Q4 2025SEC
Q4 2025Feb 17, 202682$2.32BHEI.ARBCAPHvs. Q3 2025SEC
Q3 2025Nov 14, 202584$2.40BHEI.ARBCAPHvs. Q2 2025SEC
Q2 2025Aug 14, 202585$2.35BHEI.ARBCAPHvs. Q1 2025SEC
Q1 2025May 15, 202587$2.21BHEI.ARLIRBCvs. Q4 2024SEC
Q4 2024Feb 14, 202588$2.19BHEI.ARLIRBCvs. Q3 2024SEC
Q3 2024Nov 14, 202487$2.23BHEI.ARLIRBCvs. Q2 2024SEC
Q2 2024Aug 14, 202485$2.00BHEI.ARLIRBCvs. Q1 2024SEC
Q1 2024May 15, 202487$1.99BHEI.ARLICPRTvs. Q4 2023SEC
Q4 2023Feb 15, 202489$1.79BHEI.ARBCTDYvs. Q3 2023SEC
Q3 2023Nov 14, 202380$1.60BHEI.ARLITDYvs. Q2 2023SEC
Q2 2023Aug 14, 202380$1.66BHEI.ARLITDYvs. Q1 2023SEC
Q1 2023May 15, 202371$1.54BHEI.ATDYRLIvs. Q4 2022SEC
Q4 2022Feb 15, 202368$1.38BHEI.ARLITDYvs. Q3 2022SEC
Q3 2022Nov 14, 202269$1.23BHEI.ARBCRLIvs. Q2 2022SEC
Q2 2022Aug 15, 202271$1.28BHEI.ARLITDYvs. Q1 2022SEC
Q1 2022May 16, 202271$1.45BHEI.ATDYRBCvs. Q4 2021SEC
Q4 2021Feb 14, 202280$1.63BHEI.ATDYRBCvs. Q3 2021SEC
Q3 2021Nov 15, 202181$1.98BHEI.ATDYRBCvs. Q2 2021SEC
Q2 2021Aug 16, 202183$1.92BHEI.ATDYCPRTvs. Q1 2021SEC
Q1 2021May 17, 202183$1.77BHEI.ATDYRBC–SEC

13D and 13G filings

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

Current stakes of 5% or more

Port Capital LLC does not currently report owning 5% or more of any company.

Latest filings

2 filings on file made by Port Capital LLC or listing it as a reporting person, newest first.

Schedule 13D and 13G filings by Port Capital LLC
CompanyFiled (ET)FormStakeChangeEvent dateFiling
Port Capital LLCFeb 11, 202212:47 PM ET13G/AOld format–––SEC
Port Capital LLCJan 22, 20212:49 PM ET13GOld format–New–SEC