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Port Capital LLC

Institutional InvestorSimilar funds →SEC EDGAR: CIK 1729212
Institutional-grade research for retail investors

Sector Allocation

  • Industrials45.3%$1.1B
  • Financials20.6%$505.9M
  • Technology19.0%$465.0M
  • Consumer Discretionary6.8%$166.7M
  • Materials5.3%$129.5M
  • Healthcare1.5%$36.3M
  • Other1.1%$27.9M
  • Consumer Staples0.3%$7.7M
  • Energy0.1%$1.6M
  • Utilities0.0%$211,266

AUM History

13fpro.ai/research/fund/port-capital-llc-1729212

Conviction and streaks

Stable · top 10 = 51.1%

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.

HEI$HEIConviction hold8.5% weight · held 10 quartersRBC$RBCConviction hold7.6% weight · held 10 quartersTDY$TDYConviction hold6.7% weight · held 10 quartersAPH$APHConviction hold5.3% weight · held 10 quartersSPXC$SPXCConviction hold4.5% weight · held 10 quarters$Accumulating+14% shares · 7 quarters runningATMU$ATMUAccumulating+140% shares · 3 quarters runningAXP$AXPAccumulating+11856% shares · 3 quarters runningABT$ABTAccumulating+5% shares · 3 quarters runningBX$BXAccumulating+33% shares · 3 quarters runningAPH$APHTrimming-46% shares · 6 quarters runningAME$AMETrimming-11% shares · 4 quarters runningRLI$RLITrimming-13% shares · 4 quarters runningPGR$PGRTrimming-31% shares · 4 quarters runningACGL$ACGLTrimming-24% shares · 4 quarters running

Largest positions — Q2 2026

Top 20 stock positions. Options are left out: 13F reports them at the underlying's value.

13fpro.ai/research/fund/port-capital-llc-1729212

Port Capital LLC 13F holdings — Q2 2026

$2.5B portfolio (+9.0% QoQ) · 108 holdings · Q2 2026 13F · top 10 are 51% of the stock portfolio

All holdings — Port Capital LLC (Q2 2026)

108 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
PH$PHParker-Hannifin Corp$81.1M-2%
RLI$RLIRLI CORP$79.5M-3%
GGG$GGGGRACO INC$67.0M-3%
CACI$CACICACI INTERNATIONAL INC /DE/$55.9M+18%
ATMU$ATMUAtmus Filtration Technologies Inc.$52.7M+14%
PGR$PGRPROGRESSIVE CORP/OH/$51.9M-3%
MA$MAMastercard Inc$50.1M-1%
ETN$ETNEaton Corp plc$48.4M+6%
ACGL$ACGLARCH CAPITAL GROUP LTD.$48.2M-2%
ULS$ULSUL Solutions Inc.$48.0M-19%
CP$CPCANADIAN PACIFIC KANSAS CITY LTD/CN$47.9M-2%
ICE$ICEIntercontinental Exchange, Inc.$44.4M-2%
V$VVISA INC.$42.1M+5%
CPRT$CPRTCOPART INC$40.8M-3%
SHW$SHWSHERWIN WILLIAMS CO$40.5M-2%

What changed in Q2 2026

Against the previous quarter's 13F: 27 new, 30 added to, 40 trimmed, 1 sold out. Share-count changes; largest moves by dollar size first.

New positions (27)

  • MSI$MSIMotorola Solutions, Inc.$11.5M

    first bought this quarter

  • RVTY$RVTYREVVITY, INC.$9.6M

    first bought this quarter

  • NVDA$NVDANVIDIA CORP$872K

    first bought this quarter

  • MDY$MDYSPDR S&P MIDCAP 400 ETF TRUST$823K

    first bought this quarter

  • VANGUARD INDEX FDS - S&P 500 ETF SHS$557K

    first bought this quarter

  • ISHARES TR - CORE S&P500 ETF$477K

    first bought this quarter

+21 more in the Excel export

Added to (30)

  • MDLN$MDLNMedline Inc.+94%

    now $22.9M · held 2 qtrs, 2 adds in a row

  • CACI$CACICACI INTERNATIONAL INC /DE/+18%

    now $55.9M · held 10+ qtrs

  • ATMU$ATMUAtmus Filtration Technologies Inc.+14%

    now $52.7M · held 4 qtrs, 4 adds in a row

  • DGII$DGIIDIGI INTERNATIONAL INC+25%

    now $24.1M · held 2 qtrs, 2 adds in a row

  • SPY$SPYSPDR S&P 500 ETF TRUST+38%

    now $11.7M · held 10+ qtrs, 2 adds in a row

  • ETN$ETNEaton Corp plc+6%

    now $48.4M · held 3 qtrs, 3 adds in a row

+24 more in the Excel export

Trimmed (40)

  • RBC$RBCRBC Bearings INC-16%

    now $187.0M · held 10+ qtrs, 2 trims in a row

  • APH$APHAMPHENOL CORP /DE/-8%

    now $131.1M · held 10+ qtrs, 6 trims in a row

  • ULS$ULSUL Solutions Inc.-19%

    now $48.0M · held 8 qtrs

  • HEI.A$HEI.AHEICO CORP-3%

    now $207.5M · held 10+ qtrs, 2 trims in a row

  • WINA$WINAWINMARK CORP-12%

    now $36.7M · held 10+ qtrs

  • TDY$TDYTELEDYNE TECHNOLOGIES INC-3%

    now $162.9M · held 10+ qtrs

+34 more in the Excel export

Sold out (1)

  • HON$HONHONEYWELL INTERNATIONAL INCwas $260K

    held 9+ qtrs

Firm AUM (Form ADV): $2.9B as of 2025-12-31 · SEC IAPD

Share

Holdings by quarter

Every 13F Port Capital LLC has filed, 34 earlier quarters. Pick one to see what it held then.

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Q2 2026 13F filed with the SEC on Aug 14, 2026. Prices are closing prices as of Oct 26, 2026.

Average quality of Port Capital's top 20 holdings: 69/100 (our AI quality score, weighted by position size; 17 of the 20 are scored)

Top 10 since filing

-9.8%

Value-weighted move of the 10 largest stock positions

Turnover

3%

Last quarter; 15% over the last 4

Top 10 weight

51%

Share of the stock portfolio in its 10 largest positions

Held 4+ quarters

95%

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 Q1 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

Port Capital LLC disclosed 108 positions worth $2.5B in its Form 13F-HR for Q2 2026, led by $HEI.A (HEICO CORP) at 8.5% of the equity portfolio, followed by $RBC and $TDY. During the quarter the fund opened 27 new positions and exited 1 — including a new stake in $MSI and a full exit from $HON. The portfolio is most concentrated in Industrials (45.3% of disclosed assets). All figures are sourced directly from Port Capital LLC’s Form 13F-HR filing with the SEC under CIK 1729212.

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AI-Powered Hedge Fund Analysis: Port Capital LLC

13F Pro is an AI hedge fund tracker and stock research platform. For Port Capital LLC (SEC CIK: 1729212), the platform ingests every quarterly Form 13F filing and applies AI-powered analysis on top — 10 specialized AI analysts (value, growth, momentum, macro, activist, and more) debate the fund's top positions and publish AI-generated analysis with cited SEC sources.

Every holding in Port Capital LLC's portfolio is scored on an AI quality ranking built from its SEC filings (ROIC, FCF margin, revenue growth, institutional flow, earnings quality, shareholder dilution, and more). Track accumulation and distribution quarter over quarter, identify conviction positions, and see AI stock analysis for each position — alongside 8,700+ other institutional filers and 2,800+ AI-ranked companies.