Parthenon LLC is an SEC-registered investment adviser based in Louisville, KY that reports managing 1 hedge fund on Form ADV. It reports $1.2 billion in regulatory assets under management. Its private funds, of all types, hold $17.8 million in gross assets. Its disclosed U.S. stock holdings returned an estimated +5.8% 2026 YTD through Jun 30 (S&P 500: +9.5%), based on 13F filings. Over a longer period they returned an estimated +28.7% from Q3 2024 to Q2 2026, compared with +37.2% for the S&P 500, based on 13F filings.
- Regulatory assets under management
- $1.2 billionForm ADV Item 5.F
- Gross assets of private funds
- $17.8 millionAll private fund types, Form ADV
- Hedge funds managed
- 11 private funds in total
- Employees
- 7Form ADV Item 5.A
- Registration
- SEC-registered adviserCRD 107794
- Latest Form ADV
- 01/21/2026Disciplinary disclosures: yes, see SEC record
Estimated 13F portfolio performance
| Quarter | Est. 13F return | S&P 500 |
|---|---|---|
| Q2 2026 | +11.0% | +14.8% |
| Q1 2026 | -4.7% | -4.6% |
| Q4 2025 | +2.5% | +2.4% |
| Q3 2025 | +6.1% | +7.8% |
| Q2 2025 | +6.7% | +10.4% |
| Q1 2025 | -0.8% | -4.5% |
| Q4 2024 | -0.5% | +2.1% |
| Q3 2024 | +6.2% | +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
- Microsoft Corp Com$84.8 million
- Berkshire Hathaway Inc Del CL B New$68.4 million
- Corning Inc$58.5 million
- Alphabet, Inc Voting Class$54.1 million
- Alphabet, Inc Non-voting Class$38.7 million
- Meta Platforms, Inc.$38.0 million
- Apple Inc Com$36.8 million
- Johnson & Johnson Com$30.5 million
- Walmart Inc Com$25.5 million
- Fastenal Co Com$25.3 million
As of 2026-06-30, from 13F filing by Parthenon LLC.
From SEC filings. Firm data comes from the SEC's Form ADV data as of Oct 2, 2026; performance estimates come from Form 13F. HedgeMountain has not verified this information, and it is not an offer, solicitation or recommendation. Full disclosures