Kenneth Griffin

One of the largest and most successful hedge funds in the world, founded by Ken Griffin in 1990. The firm employs a multi-strategy investment approach, investing simultaneously across equities, fixed income, and commodities, and using quantitative and event-driven strategies. Citadel is known for its unique management structure based on independent teams (“pods”), each responsible for its own investment strategies. In addition to the fund, Griffin founded Citadel Securities, one of the largest market makers in the United States. Citadel is known for its ability to recover quickly from crises (for example, after 2008) and for posting a record $16 billion profit in 2022—the highest in hedge fund history. Griffin was portrayed in the film Dumb Money, which focused on the stock market phenomenon surrounding GameStop shares; he criticized the film for misrepresenting the facts.