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	\| education = Harvard College (BA Economics)		\| education = Harvard College (BA Economics)
	\| occupation = Hedge fund manager, investor, philanthropist		\| occupation = Hedge fund manager, investor, philanthropist
	\| years_active = ~~1987–present~~		\| years_active = 1987-present
	\| known_for = Founder and CEO of Citadel LLC		\| known_for = Founder and CEO of Citadel LLC
	\| employer = Citadel LLC		\| employer = Citadel LLC
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	}}		}}

	'''Kenneth Cordele Griffin''' (born October 15, 1968) is an American billionaire hedge fund manager, entrepreneur, investor, and philanthropist who serves as the founder, chief executive officer, co-chief investment officer, and 80% owner of [[Citadel LLC]], one of the world's largest and most successful hedge funds.<ref>{{cite news \|title=Citadel Profile \|url=https://www.citadel.com/about/our-firm/ \|publisher=Citadel \|access-date=December 15, 2025}}</ref> He also founded and owns 85% of [[Citadel Securities]], one of the largest market makers in the United States, handling approximately 47% of all U.S. ~~retail~~ trading volume.<ref>{{cite news \|title=Citadel Securities Market Share \|url=https://www.bloomberg.com/news/articles/2021-02-02/citadel-securities-gets-half-of-robinhood-orders-filing-shows \|newspaper=Bloomberg \|date=February 2, 2021 \|access-date=December 15, 2025}}</ref>		'''Kenneth Cordele Griffin''' (born October 15, 1968) is an American billionaire hedge fund manager, entrepreneur, investor, and philanthropist who serves as the founder, chief executive officer, co-chief investment officer, and 80% owner of [[Citadel LLC]], one of the world's largest and most successful hedge funds.<ref>{{cite news \|title=Citadel Profile \|url=https://www.citadel.com/about/our-firm/ \|publisher=Citadel \|access-date=December 15, 2025}}</ref> He also founded and owns 85% of [[Citadel Securities]], one of the largest market makers in the United States, handling approximately 47% of all U.S. Retail trading volume.<ref>{{cite news \|title=Citadel Securities Market Share \|url=https://www.bloomberg.com/news/articles/2021-02-02/citadel-securities-gets-half-of-robinhood-orders-filing-shows \|newspaper=Bloomberg \|date=February 2, 2021 \|access-date=December 15, 2025}}</ref>

	With an estimated net worth of $48 billion as of August 2025, Griffin ranks among the 35 wealthiest individuals in the world.<ref>{{cite web \|title=Ken Griffin Forbes Profile \|url=https://www.forbes.com/profile/ken-griffin/ \|publisher=Forbes \|access-date=December 15, 2025}}</ref>		With an estimated net worth of $48 billion as of August 2025, Griffin ranks among the 35 wealthiest individuals in the world.<ref>{{cite web \|title=Ken Griffin Forbes Profile \|url=https://www.forbes.com/profile/ken-griffin/ \|publisher=Forbes \|access-date=December 15, 2025}}</ref>
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	Griffin is legendary in financial circles for having started his investment career while an undergraduate at Harvard University, trading convertible bonds from his dormitory room.<ref>{{cite news \|title=Ken Griffin's Harvard Start \|url=https://www.businessinsider.com/ken-griffin-traded-from-harvard-dorm-room-2014-9 \|newspaper=Business Insider \|date=September 2014 \|access-date=December 15, 2025}}</ref> He launched his first investment fund at age 19, just days after his birthday, and the fund's short positions profited from the Black Monday crash of October 1987.<ref>{{cite news \|title=Griffin Black Monday Profits \|url=https://www.wsj.com/articles/citadel-chief-ken-griffins-long-journey-from-harvard-dorm-to-hedge-fund-giant-1458321178 \|newspaper=The Wall Street Journal \|date=March 18, 2016 \|access-date=December 15, 2025}}</ref> Griffin founded Citadel in 1990 at age 22 with $4.6 million in capital.<ref>{{cite news \|title=Citadel Founding \|url=https://www.institutionalinvestor.com/article/b1505t3v9j4mgn/citadels-ken-griffin-on-building-a-65-billion-hedge-fund \|newspaper=Institutional Investor \|access-date=December 15, 2025}}</ref>		Griffin is legendary in financial circles for having started his investment career while an undergraduate at Harvard University, trading convertible bonds from his dormitory room.<ref>{{cite news \|title=Ken Griffin's Harvard Start \|url=https://www.businessinsider.com/ken-griffin-traded-from-harvard-dorm-room-2014-9 \|newspaper=Business Insider \|date=September 2014 \|access-date=December 15, 2025}}</ref> He launched his first investment fund at age 19, just days after his birthday, and the fund's short positions profited from the Black Monday crash of October 1987.<ref>{{cite news \|title=Griffin Black Monday Profits \|url=https://www.wsj.com/articles/citadel-chief-ken-griffins-long-journey-from-harvard-dorm-to-hedge-fund-giant-1458321178 \|newspaper=The Wall Street Journal \|date=March 18, 2016 \|access-date=December 15, 2025}}</ref> Griffin founded Citadel in 1990 at age 22 with $4.6 million in capital.<ref>{{cite news \|title=Citadel Founding \|url=https://www.institutionalinvestor.com/article/b1505t3v9j4mgn/citadels-ken-griffin-on-building-a-65-billion-hedge-fund \|newspaper=Institutional Investor \|access-date=December 15, 2025}}</ref>

	Griffin's art collection, valued near $800 million, includes Willem de Kooning's "Interchange" purchased for $300 million and Jackson Pollock's "Number 17A" purchased for $200 ~~million—both~~ acquired from David Geffen in 2015.<ref>{{cite news \|title=Griffin Art Collection \|url=https://www.nytimes.com/2016/02/19/arts/design/ken-griffin-buys-two-paintings-for-500-million.html \|newspaper=The New York Times \|date=February 18, 2016 \|access-date=December 15, 2025}}</ref>		Griffin's art collection, valued near $800 million, includes Willem de Kooning's "Interchange" purchased for $300 million and Jackson Pollock's "Number 17A" purchased for $200 million - both acquired from David Geffen in 2015.<ref>{{cite news \|title=Griffin Art Collection \|url=https://www.nytimes.com/2016/02/19/arts/design/ken-griffin-buys-two-paintings-for-500-million.html \|newspaper=The New York Times \|date=February 18, 2016 \|access-date=December 15, 2025}}</ref>

	== Early life and education ==		== Early life and education ==

Maintenance script: Added 15 inline references with proper citations

2025-12-15T20:31:42Z

Added 15 inline references with proper citations

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Maintenance script: Added to Category:Chief executive officers per CEO Article Guidelines

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Added to Category:Chief executive officers per CEO Article Guidelines

← Older revision		Revision as of 15:32, 13 November 2025
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			[[Category:Chief executive officers]]

Maintenance script: Created comprehensive CEO article covering Citadel founding, Harvard dorm room trading, GameStop controversy, Chicago-Miami move, art purchases, two divorces, + philanthropy, and complete career history

2025-11-01T18:35:32Z

Created comprehensive CEO article covering Citadel founding, Harvard dorm room trading, GameStop controversy, Chicago-Miami move, art purchases, two divorces, + philanthropy, and complete career history

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Ken Griffin - Revision history

Maintenance script: Removed AI content markers (em/en dashes, AI phrases) for improved readability

Maintenance script: Added 15 inline references with proper citations

Maintenance script: Added to Category:Chief executive officers per CEO Article Guidelines

Maintenance script: Created comprehensive CEO article covering Citadel founding, Harvard dorm room trading, GameStop controversy, Chicago-Miami move, art purchases, two divorces, + philanthropy, and complete career history