Ken Griffin has left the building ... in the U.S. Chicago Bulls collapse in 109-90 blowout, ending season with play-in loss to Miami Heat for 3rd straight year Chicago Bulls collapse in 109-90 ...

Billionaire developer Ken Griffin has pledged another $5 million toward the Cox Science Center and Aquarium's expansion, raising his total contributions to $13 million, the center announced Friday.

Gifting allows recipients to access the article for free. Billionaire Ken Griffin completed his sell-off of the top floors at No. 9 Walton yesterday, selling two penthouse floors for a combined ...

Billionaire Citadel founder Ken Griffin has sold two more of his Chicago condos in transactions totaling $15.9 million. The sales at No. 9 West Walton in the city’s exclusive Gold Coast ...

Ken Griffin’s losses on luxury Chicago real estate expanded to almost $30 million with sales of the final two floors out of the four he assembled within the No. 9 West Walton Street condo tower.