Citadel Enterprise Americas LLC

American hedge fund and financial services provider

Citadel LLC is an American multinational hedge fund and financial services company. Founded in 1990 by Kenneth Griffin, it has more than $77 billion in assets under management as of January 2026. The company has over 3,100 employees, with corporate headquarters in Miami, Florida, and offices throughout North America, Asia, and Europe. Founder, CEO and Co-CIO Griffin owns approximately 85% of the firm. As of December 2025, Citadel has posted $90.4 billion in net gains since its inception in 1990, making one of the "most successful hedge funds in history," according to LCH Investments, and CNBC.

Also known as...

Citadel Investment Group, LLC, Citadel LLC, and Citadel

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Business Technology

AI Hedge Fund Situational Awareness Collapses

AI hedge fund Situational Awareness collapsed after a tech selloff, forcing a fire sale to Citadel and a client apology from its 24-year-old founder.

Situational Awareness vs. Long-Term Capital Management: A side-by-side comparison MarketWatch — Jul 31, 22:09 PM
Leopold Aschenbrenner Built a Hot A.I. Hedge Fund. Then it Melted Down. The New York Times — Jul 31, 21:28 PM
Citadel’s Griffin to Meet With New York Governor After Mamdani Spat Bloomberg — Apr 28, 12:39 PM
Reeves rent freeze: How did Chancellor turn to a Mamdani-style policy controversy? City AM — Apr 28, 12:30 PM
Mayor Mamdani begs lawmakers to allow him to miss budget deadline: sources NY Post — Apr 28, 00:52 AM
Mamdani’s plan to delay pension payments echoes the schemes that brought NYC to near bankruptcy NY Post — Apr 27, 23:36 PM
Mamdani made Ken Griffin a target — and cemented NYC’s death spiral NY Post — Apr 23, 23:40 PM
Citadel’s swoop on Situational Awareness helped stem a $3tn AI rout Financial Times — Jul 31, 21:46 PM
All New York boroughs to host free World Cup fan events, Mamdani says Al Jazeera — Apr 28, 09:17 AM
Mamdani's education plan's 'lack of merit' could fundamentally change student outcomes: GOP leader warns Fox News — Apr 28, 00:00 AM
Ken Griffin’s Citadel fires back at NYC Mayor Zohran Mamdani ‘tax the rich’ video featuring his $238 million penthouse Fortune — Apr 23, 22:14 PM
The Unwind of Situational Awareness' Stock Bets Bloomberg — Jul 31, 20:44 PM
Why New York City Spends So Much on Its Mediocre Schools The Atlantic — Apr 28, 11:00 AM
Citadel attacks Zohran Mamdani for using Ken Griffin’s penthouse to sell tax plan Financial Times — Apr 23, 21:29 PM
AI Hedge Fund Collapses as Earnings Hit Tech Giants | Bloomberg Businessweek 7/31/2026 Bloomberg — Jul 31, 20:25 PM
Ken Griffin's deputy calls Zohran Mamdani's targeting of the billionaire 'shameful' in a companywide memo Business Insider — Apr 23, 19:53 PM
'We let you down': Leopold Aschenbrenner's mea culpa to fund investors after near-collapse Seeking Alpha — Jul 31, 20:42 PM
New York restaurant’s $51 half chicken fuels cost of dining debate The Straits Times — Apr 28, 03:05 AM
Ken Griffin’s Citadel claps back at Mamdani’s viral ‘penthouse’ video –threatens to scrap $6B NYC development NY Post — Apr 23, 20:29 PM
The power couple of AI is getting married in Carmel, days after groom Leopold Aschenbrenner’s hedge fund nearly blew up Fortune — Jul 31, 21:01 PM