United StatesFounded it
Ken Griffin
Ken Griffin founded the hedge fund firm Citadel in 1990 and the market maker Citadel Securities in 2002; his fortune is mostly his ownership of the two firms.
- Forbes estimate
- $57.4B
- Forbes, 7 Oct 2026
- Forbes rank
- No. 33
- 30 Sep 2026
- Stake in Citadel
- 85%
- Net worth, Bloomberg
- $57.5B
- Bloomberg, 13 Oct 2026
- Born
- 15 Oct 1968
- Florida, United States
- Education
- Bachelor's degree
- AB with honors in economics, Harvard College (1989)
- Giving Pledge
- Not a signer
Where the fortune sits
Citadel hedge fund business and Citadel Securities
Citadel
hedge funds, founded 1990
Bloomberg's estimate of his ownership of Citadel's hedge fund business, based on ADV filings and ratings reports
Bloomberg Billionaires Index estimate (Form ADV and ratings reports), 13 Oct 2026
Founder, CEO and co-chief investment officer
Citadel Securities
market making, founded 2002
Bloomberg credits him with 80%; a June 2019 S&P Global Ratings report said he held 'an overwhelming majority'
Bloomberg Billionaires Index estimate (S&P Global Ratings report), 13 Oct 2026
Founder and non-executive chairman
Other holdings
Homes in Miami, Palm Beach, New York, the Hamptons, Hawaii and London
Bloomberg; specific properties not named
Art collection
Bloomberg counts its value in his net worth
Where Ken stands among 73
Everyone on the site, grouped by their answer. Ken Griffin is outlined.
How the fortune started
Founded it
Founded it 42
Inherited and grew it 12
Built it up 8
Inherited it 6
Through marriage 5
Industry
Finance
Finance 10
Technology 24
Several industries 9
Metals and mining 6
Retail 4
Fashion and beauty 4
Media 3
Food and drink 3
Shipping 3
Crypto 2
Oil, gas and chemicals 2
Healthcare 1
Casinos and resorts 1
Property and sports 1
Giving Pledge
Not a signer
Not a signer 61
Signed 11
Not stated 1
Education
Bachelor's degree
Bachelor's degree 27
Graduate degree 24
Left university without a degree 6
No university 5
Not stated 11
Role today
Runs the company
Runs the company 32
Chair, board or owner 25
Founder, no executive role 8
No role 4
Retired 4
The person
- Born
- 15 Oct 1968Florida, United States
- Citizenship
- United States
- Lives in
- Miami, Florida, United States
- Education
- Bachelor's degreeAB with honors in economics, Harvard College (1989)
- Parents
- Father was a General Electric engineer on the space program; mother studied childhood education; his grandmother paid his Harvard tuition from her savings
What they give
- Giving Pledge
- Not a signer
- Foundation
- Griffin CatalystHis civic engagement and philanthropy initiative
- Lifetime giving
- $2.5BForbes, 9 Feb 2026. Forbes' lifetime giving estimate; Griffin Catalyst says he has donated more than $5.7 billion
Role and record
- Role now
- Runs the companyFounder, CEO and co-CIO of Citadel; founder and non-executive chairman of Citadel Securities
- Successor
- None named
- Public office
- None found
- Legal record
- None found
