Parallax Volatility Advisers, L.P. is an SEC-registered investment adviser based in San Francisco, CA that reports managing 1 hedge fund on Form ADV. It reports $6.0 billion in regulatory assets under management. Its private funds, of all types, hold $6.0 billion in gross assets. Its disclosed U.S. stock holdings returned an estimated +10.6% 2026 YTD through Jun 30 (S&P 500: +9.5%), based on 13F filings. Over a longer period they returned an estimated +52.4% from Q3 2024 to Q2 2026, compared with +37.2% for the S&P 500, based on 13F filings.
- Regulatory assets under management
- $6.0 billionForm ADV Item 5.F
- Gross assets of private funds
- $6.0 billionAll private fund types, Form ADV
- Hedge funds managed
- 11 private funds in total
- Employees
- 51Form ADV Item 5.A
- Registration
- SEC-registered adviserCRD 158143
- Latest Form ADV
- 03/19/2026Disciplinary disclosures: none reported
Estimated 13F portfolio performance
| Quarter | Est. 13F return | S&P 500 |
|---|---|---|
| Q2 2026 | +14.4% | +14.8% |
| Q1 2026 | -3.4% | -4.6% |
| Q4 2025 | +1.3% | +2.4% |
| Q3 2025 | +9.3% | +7.8% |
| Q2 2025 | +19.1% | +10.4% |
| Q1 2025 | -4.3% | -4.5% |
| Q4 2024 | +3.0% | +2.1% |
| Q3 2024 | +6.1% | +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
- Nvidia Corp$231.6 million
- 65339f655$207.2 million
- Intel Corp Com$64.2 million
- Applied Matls Inc Com$55.6 million
- Amazon Com Inc Com$50.0 million
- Micron Technology Inc Com$44.0 million
- Goldman Sachs$42.2 million
- Walmart Inc Com$36.9 million
- Alibaba Group Holding Limited$34.3 million
- Exxon Mobil Corp.$33.8 million
As of 2026-06-30, from 13F filing by Parallax Volatility Advisers, L.P..
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