The Town Council narrowly approved the plans to replace four groins at billionaire Ken Griffin's estate. Griffin will foot ...

52nd St.; and mega-billionaire investor Ken Griffin. Citadel and Citadel Securities, separate companies that Griffin leads, will be the skyscraper’s anchor tenants with at least 850,000 square feet.

These and others apply to Ken Griffin, CEO and founder of Citadel. It's no surprise that investors and analysts carefully scrutinize the hedge fund's every move, of which there were several ...

The Town Council narrowly approved the plans to replace four groins at billionaire Ken Griffin's estate. Griffin will foot the bill and work will be done under the town's permits. The process for ...