Billionaire Ken Griffin said on Tuesday he will no longer support Harvard after years of being a megadonor to the university—joining others who have stopped giving to prestigious universities ...

Billionaire hedge-fund manager Ken Griffin has sold the top two floors of Chicago’s No. 9 Walton condo tower for $19 million, marking a 44% loss from his 2017 purchase price of over $34 million.

Billionaire Ken Griffin unveiled plans to build a 54-story skyscraper in Brickell to serve as the new headquarters for his financial empire, Citadel.

Citadel CEO Ken Griffin believes American prosperity is a testament to the power of the Constitution. And as the country gets ready to celebrate its 250th anniversary next year, the hedge fund ...