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 founded his hedge fund Citadel in 1990 with just $4.6 million, counting his grandmother as an initial investor. Today, at a net worth north of $40 billion, he is one of the world’s ...

The billionaire Citadel founder Ken Griffin is one of the biggest donors to the Republican Party but has some worries about the effect of policies the Trump administration has promised. Speaking ...

Exploration reveals that our solar system is filled with amazingly diverse places that transform our understanding of Earth and worlds beyond. The Kenneth C. Griffin Exploring the Planets Gallery ...

Ron DeSantis supporter Ken Griffin has gifted $300 million to Harvard’s college of arts and sciences. Billionaire hedge fund CEO and Republican megadonor Kenneth C. Griffin ’89 donated $300 ...