Weiss Asset Management is an SEC-registered investment adviser based in Boston, MA that reports managing 2 hedge funds on Form ADV. It reports $15.6 billion in regulatory assets under management. Its private funds, of all types, hold $15.6 billion in gross assets. Its disclosed U.S. stock holdings returned an estimated +2.8% 2026 YTD through Jun 30 (S&P 500: +9.5%), based on 13F filings. Over a longer period they returned an estimated +10.5% from Q3 2024 to Q2 2026, compared with +37.2% for the S&P 500, based on 13F filings.
- Regulatory assets under management
- $15.6 billionForm ADV Item 5.F
- Gross assets of private funds
- $15.6 billionAll private fund types, Form ADV
- Hedge funds managed
- 22 private funds in total
- Employees
- 139Form ADV Item 5.A
- Registration
- SEC-registered adviserCRD 155564
- Latest Form ADV
- 03/20/2026Disciplinary disclosures: yes, see SEC record
Estimated 13F portfolio performance
| Quarter | Est. 13F return | S&P 500 |
|---|---|---|
| Q2 2026 | +7.9% | +14.8% |
| Q1 2026 | -4.7% | -4.6% |
| Q4 2025 | -12.0% | +2.4% |
| Q3 2025 | +4.9% | +7.8% |
| Q2 2025 | +17.8% | +10.4% |
| Q1 2025 | -4.9% | -4.5% |
| Q4 2024 | -2.7% | +2.1% |
| Q3 2024 | +6.8% | +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
- Nvidia Corp$1.1 billion
- Micron Technology Inc Com$858.5 million
- 86800u500$249.1 million
- Tesla Mtrs Inc Com$191.6 million
- Boeing Co$188.3 million
- 65339f655$129.4 million
- Theravance Biopharma Inc$126.8 million
- Sprott Physical Gold And Silve$124.7 million
- Robinhood Mkts Inc Com CL A$109.4 million
- Entrepreneurshares Series TR$107.3 million
As of 2026-06-30, from 13F filing by Weiss Asset Management LP.
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