#9 · 2026 list
Warren Buffett
United States
- 🏦 Finance & Investments
- Investor
- Executive
Berkshire Hathaway
Net Worth Estimate$142 billionForbes real-time estimate · Oct 1, 2026
View Wealth Profile →Wealth Builder
Ken Griffin
United StatesFinance & InvestmentsCitadelAge 57
- Founder
- Hedge Fund Manager
- Self-Made
Net Worth Estimate
$49.8 billion
Forbes World's Billionaires List 2026 · March 1, 2026
Last updated: October 8, 2026
#37 · Forbes World's Billionaires List 2026, as of March 1, 2026
Biography
Ken Griffin began trading from his Harvard dorm room and founded Citadel in 1990. He also founded Citadel Securities, one of the largest US market makers.
Companies
Wealth history
| Date | Source | Rank | Estimate |
|---|---|---|---|
| March 1, 2026 | Forbes World's Billionaires List 2026 | #37 | $49.8 billion |
Figures from different sources and dates are listed separately and never merged. Missing years are not estimated. Net worth figures are estimates published by the named source on the date shown. They change frequently and are not exact or permanent. Rankings are date-stamped snapshots.
Philanthropy
Documented giving
Harvard University gift
Gave $300 million to Harvard in 2023; its Graduate School of Arts and Sciences was renamed for him.
Source: Wikipedia
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