Citadel’s Ken Griffin is forging ahead with his new Park Avenue office tower, filing plans with the city as the developers ...

The owner of New York City’s 685 First Ave. refinanced and recapitalized the apartment building in a deal that values the ...

Ken Griffin’s Citadel is departing the iconic Chicago tower that once served as its headquarters, cutting one of its last remaining ties to the city. The financial conglomerate is in talks to ...