Citadel CEO Ken Griffin is lending his 'epic' $44.6 million Stegosaurus fossil to the American Museum of Natural History

Ken Griffin - Ken Griffin At The Organ

Ken Griffin - The Hammond Organ Collection

Ken Griffin - Christmas Organ Featuring Ken Griffin

Citadel's Ken Griffin: Competition creates value for consumers

Morning coffee brewing. Headed out to help a couple buddies work on the carriage house roof today at the farm. As I was preparing I notice something red out of the corner of my eye. #petejive I will take it as a sign. A good sign. Perhaps the colors in the sky changes something about nature. After our encounter the bird flew off happily. | Jon Griffin

Ken Griffin - Ken Griffin At The Organ