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 ...

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 ...

Donald Trump’s tariffs are a “huge policy mistake” that will end up hurting America’s middle class, the hedge fund ...

It has been a year of extraordinary returns for Citadel’s flagship funds. Ken Griffin's firm has seen double-digit returns while the broad market has fallen precipitously. The year 2022 has been ...