Port Capital LLC is an SEC-registered investment adviser based in Chicago, IL that reports managing 5 hedge funds on Form ADV. It reports $2.9 billion in regulatory assets under management. Its private funds, of all types, hold $1.3 billion in gross assets. Its disclosed U.S. stock holdings returned an estimated +10.0% 2026 YTD through Jun 30 (S&P 500: +9.5%), based on 13F filings. Over a longer period they returned an estimated +27.9% from Q3 2024 to Q2 2026, compared with +37.2% for the S&P 500, based on 13F filings.
- Regulatory assets under management
- $2.9 billionForm ADV Item 5.F
- Gross assets of private funds
- $1.3 billionAll private fund types, Form ADV
- Hedge funds managed
- 55 private funds in total
- Employees
- 13Form ADV Item 5.A
- Registration
- SEC-registered adviserCRD 206517
- Latest Form ADV
- 02/19/2026Disciplinary disclosures: none reported
Estimated 13F portfolio performance
| Quarter | Est. 13F return | S&P 500 |
|---|---|---|
| Q2 2026 | +10.6% | +14.8% |
| Q1 2026 | -0.5% | -4.6% |
| Q4 2025 | -1.5% | +2.4% |
| Q3 2025 | +2.1% | +7.8% |
| Q2 2025 | +4.9% | +10.4% |
| Q1 2025 | +2.3% | -4.5% |
| Q4 2024 | -2.3% | +2.1% |
| Q3 2024 | +10.3% | +5.4% |
Estimate of the firm's disclosed long U.S. stock portfolio from its quarterly 13F filings, holding each quarter-end portfolio to the next quarter-end at prices implied by all 13F filers. It is a price return before dividends and fees, ignores shorts, options, bonds, cash and trading within the quarter, and is not the return of any fund. Disclosures
Largest disclosed holdings
- Heico Corp New$207.5 million
- RBC Bearings Inc$187.0 million
- Teledyne Technologies Inc$162.9 million
- Amphenol Corp New$131.1 million
- SPX Technologies Inc$109.2 million
- Ametek Inc$102.4 million
- Watts Water Technologies Inc$97.4 million
- Linde PLC$87.3 million
- O Reilly Automotive Inc New$85.5 million
- Simpson MFG Inc$82.6 million
As of 2026-06-30, from 13F filing by Port Capital LLC.
Private funds reported on Form ADV (5)
As reported in the adviser's Form ADV filed Mar 11, 2024. Funds also listed from Form D are shown above.
From SEC filings. Firm data comes from the SEC's Form ADV data as of Oct 2, 2026; performance estimates come from Form 13F. AltMountain has not verified this information, and it is not an offer, solicitation or recommendation. Full disclosures