Ken Griffin

About Ken Griffin

Ken Griffin founded and runs Citadel, a Miami-based hedge fund firm that manages $59 billion in assets.

Griffin founded Citadel in 1990 but first began trading from his Harvard dorm in 1987. He put a satellite dish on the roof to get real-time stock quotes.

Citadel Securities, one of Wall Street's biggest market-making firms, is responsible for one of every five stock trades in the U.S.

Griffin has given some $2.2 billion to philanthropic causes, including $300 million to Harvard's Faculty of Arts and Sciences in April 2023; the graduate school of arts and sciences bears his name.

In January 2024, Griffin said he would pause his support for Harvard, citing its handling of antisemitic incidents on campus.