Billionaire hedge fund manager Ken Griffin is seeking to sell a penthouse he owns at Zaha Hadid-designed One Thousand Museum.

Ken Griffin has sent legal letters threatening Sony Pictures over the representation of his company, Citadel, in “Dumb Money.” Citadel's involvement in the GameStop short squeeze event ...

Ken Griffin built Citadel into a powerful and hugely profitable player in the markets and is moving it to Miami. Here's what drives him. "JB? JB and I are not on speaking terms these days," said ...

The Town Council narrowly approved the plans to replace four groins at billionaire Ken Griffin's estate. Griffin will foot the bill and work will be done under the town's permits. The process for Palm ...

The Miami-based firm, headed by Ken Griffin, delivered $25 billion in ... got walloped from a massive short bet on GME shares. Sony Pictures made a movie about the movement, dubbed "Dumb Money ...