Net worth
$77.8B
Forbes Real-Time · as of Sep 24, 2026
Latest moves
No moves from Jeff Yass in the digest yet. The archive grows every morning.
Recent SEC filings
Form 4 insider trades post within 2 business days. 13F fund holdings can arrive 45 days after quarter end. New to filings? Read Filings 101.
Footprint
Companies
Susquehanna International Group (SIG), Bala Cynwyd, PA - private trading/market-making and investment firm co-founded 1987Co-founder, managing director… · ~75% · as of 2018
source ↗More
- Role
- Co-founder, managing director, controlling owner
- Stake
- ~75% (per ProPublica, as of 2018)
- Stake as of
- 2018
Susquehanna Growth Equity (SIG growth-equity arm, est. 2006)SIG affiliate
source ↗Susquehanna Private Capital (US middle-market buyouts, est. 2017)SIG affiliate
source ↗SIG China / SIG Asia venture investments (350+ companies)SIG affiliate
source ↗Susquehanna Financial Group (institutional broker-dealer) and Susquehanna Structured CapitalSIG affiliates
source ↗Nellie Analytics (Dublin sports-betting company, est. 2017)SIG affiliate
source ↗Stakes
ByteDance (TikTok parent) - SIG's most valuable holding; initial $5M in 2012~15% · as of 2020
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- Stake
- ~15% of fully diluted cap table held by SIG (as of 2020)
- Stake as of
- 2020
TikTok USDS Joint Venture (US TikTok entity, formed 22 Jan 2026) - SIG affiliate Vastmere Strategic Investments among existing-ByteDance-investor affiliates in the ~50% ByteDance-and-affiliates blocas of Jan 2026
source ↗Trump Media & Technology Group (via SIG's position in Digital World Acquisition Corp; SIG later sold shares and closed shorts after the 2024 merger per SEC filings)DJT · exited (per filings, 2024) · as of 2024
source ↗Investment vehicles
Susquehanna International Group, LLPfund · CIK 0001446194 · Files 13F
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- Type
- fund
- Notes
- 13F-HR filings seen, most recent 2026-08-14
Susquehanna International Group Ltd.fund · CIK 0001765924 · Files 13F
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- Type
- fund
- Notes
- Irish/intl SIG entity; 13F-HR filings listed on EDGAR
Susquehanna International Securities, Ltd.fund · CIK 0001765923 · Files 13F
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- Type
- fund
- Notes
- 13F-HR filings listed on EDGAR
Heights Capital Management, Incfund · CIK 0001081698 · Files 13F
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- Type
- fund
- Notes
- SIG-affiliated PIPE investment fund (San Francisco, est. 1996); 13F-HR most recent 2026-08-14
Vastmere Strategic Investmentsholding co
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- Type
- holding co
- Notes
- SIG affiliate named as investor in TikTok USDS Joint Venture
Private deals
SIG affiliate Vastmere Strategic Investments participated as an existing ByteDance investor in the TikTok USDS Joint…Jan 2026
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- In full
- SIG affiliate Vastmere Strategic Investments participated as an existing ByteDance investor in the TikTok USDS Joint Venture (Oracle, Silver Lake, MGX 15% each)
- Date
- 2026-01-22
SIG launched a dedicated prediction-markets trading desk2024
source ↗Real estate
Haverford (Lower Merion Township), Pennsylvaniaprimary residence (long-time; purchase…
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- Type
- primary residence (long-time; purchase date/price not reported)
Legal & regulatory
ProPublica (2022) reported Yass paid ~$1B less in federal income tax 2013-2018 than peers' rates would imply; IRS…
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- In full
- ProPublica (2022) reported Yass paid ~$1B less in federal income tax 2013-2018 than peers' rates would imply; IRS ordered Yass and partners to pay $121M in back taxes (2019) over 2010 Swiss stock trades; SIG challenged IRS in US Tax Court (case pending as of 2022)
ByteDance/TikTok divestiture law and 2026 US joint-venture restructuring directly affect SIG's largest holding
source ↗Northwest Biotherapeutics spoofing lawsuit against SIG and other market makers dismissed in 2024; earlier…
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- In full
- Northwest Biotherapeutics spoofing lawsuit against SIG and other market makers dismissed in 2024; earlier front-running suit settled for $18.5M (2009-2012 era)
Giving
Susquehanna Foundation (private foundation, Bala Cynwyd PA; Jeffrey Yass vice-president; ~$674M assets FY2025)EIN 23-2732477
source ↗Yass Prize for STOP education (founded with wife Janine; $20M+ awarded in 2022)
source ↗$100M gift to University of Austin (UATX) to launch a $300M tuition-free campaign (Nov 2025 per Wikipedia)
source ↗Research gaps: Yass's personal ByteDance percentage not verified (only SIG ~15% as of 2020). No individual SEC CIK found on EDGAR. No reputable reports of recent property purchases; no sports teams or collections found. Current status of the Tax Court case unverified. Watch list is thin: no dated catalysts beyond 13F deadline could be sourced (web search budget exhausted).
What to watch
SIG 13F-HR for Q3 2026 (due 45 days after 30 Sep, ~mid-Nov 2026); prior filing 14 Aug 2026~2026-11-16
source ↗TikTok USDS Joint Venture governance/ownership developments affecting SIG's ByteDance-linked stake
source ↗Outcome of Susquehanna's US Tax Court dispute with IRS over 2010 trades (status after 2022 unverified)
source ↗