Jeff Yass is a co-founder and managing director of Susquehanna International Group, the trading and market-making firm based in Bala Cynwyd, Pennsylvania, that he started with five college friends in 1987.
Funds
The funds Jeff Yass runs, and what each reported holding in its latest 13F filing with the SEC.
- Net worth
- $77.8B
- #26 in the world · Forbes, 31 October 2026
Snapshot
Known for
Co-founding Susquehanna International Group
Worth knowing
- Most of the value in SIG's 13F report is options: in the filing for the quarter to June 30, 2026, puts and calls make up about 91% of the $1.28 trillion reported, so the total measures the stock underlying its options book rather than money managed for clients.
- SIG's early stake in ByteDance links Yass to the debate over TikTok in the United States.
- Forbes lists him as the richest person in Pennsylvania in its 2026 Richest Person In Every State list.
- Age
- 68
- Based
- Philadelphia area, Pennsylvania
- Citizenship
- United States
- Born
- 1958, Queens, New York
- Company
- Susquehanna International Group (co-founder, managing director)
Connections
Ties, as Forbes lists them
Either side by net worth
#8 of 227 people with a Forbes net worth here.
