Gamco Asset Management Inc. is an SEC-registered investment adviser based in Greenwich, CT that reports managing 1 hedge fund on Form ADV. It reports $11.7 billion in regulatory assets under management. Its private funds, of all types, hold $331.0 million in gross assets. Its disclosed U.S. stock holdings returned an estimated +17.4% 2026 YTD through Jun 30 (S&P 500: +9.5%), based on 13F filings. Over a longer period they returned an estimated +45.1% from Q3 2024 to Q2 2026, compared with +37.2% for the S&P 500, based on 13F filings.
- Regulatory assets under management
- $11.7 billionForm ADV Item 5.F
- Gross assets of private funds
- $331.0 millionAll private fund types, Form ADV
- Hedge funds managed
- 11 private funds in total
- Employees
- 120Form ADV Item 5.A
- Registration
- SEC-registered adviserCRD 104950
- Latest Form ADV
- 03/31/2026Disciplinary disclosures: none reported
Estimated 13F portfolio performance
| Quarter | Est. 13F return | S&P 500 |
|---|---|---|
| Q2 2026 | +14.1% | +14.8% |
| Q1 2026 | +2.9% | -4.6% |
| Q4 2025 | +1.6% | +2.4% |
| Q3 2025 | +7.1% | +7.8% |
| Q2 2025 | +7.2% | +10.4% |
| Q1 2025 | -2.7% | -4.5% |
| Q4 2024 | -0.1% | +2.1% |
| Q3 2024 | +9.1% | +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
- Madison Square Garden Sports C$236.7 million
- Crane Company$218.4 million
- Mueller Inds Inc$189.6 million
- Gatx Corp$186.9 million
- Watts Water Technologies Inc$156.2 million
- Bank New York Mellon Corp$141.3 million
- Herc Holdings Inc$140.0 million
- Sphere Entertainment$132.5 million
- Ametek Inc$131.7 million
- American Express Co Com$131.6 million
As of 2026-06-30, from 13F filing by Gamco Investors, Inc. Et Al.
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