Ken Griffin built Citadel into a powerful and hugely ... Griffin expected colleagues to work as hard as he did. Peng Zhao, the CEO of Citadel Securities, first met Griffin as a second-year ...

Billionaire Ken Griffin said Donald Trump’s latest tariffs amount to a hefty tax on middle-class families and are a “huge ...

Billionaire Citadel founder Ken Griffin returned to his Florida high school on Tuesday. He spoke about his "Call of Duty" addiction and bombing his chem exam. He also gave them advice on getting a ...

Griffin voiced his displeasure with how he and his company were portrayed in the recently-released movie “Dumb Money,” which focuses the GameStop stock saga. Ken Griffin has sent legal letters ...

Ken Griffin's hedge fund is up over 30% this year, even while the broader market has sunk double digits over the same timeframe. October was another month of gains for Citadel's flagship hedge ...

Billionaire Ken Griffin, who has expressed skepticism about Donald Trump in the past, weighed in with a statement of support late Sunday following the attempted assassination of the former ...