Citadel’s Ken Griffin is forging ahead with his new Park Avenue office tower, filing plans with the city as the developers gear up for a public review of the project starting in March. Griffin ...

The prewar apartment is located at the exclusive 740 Park Avenue.

A Manhattan office skyscraper on Madison Avenue is up for sale, in one of the first major tests of the market for trophy office building sales this year.

(Bloomberg) -- Spitzer Enterprises, the real estate firm run by former New York Governor Eliot Spitzer, and its partner are exploring a sale of a luxury apartment building overlooking Manhattan ...

(Bloomberg) -- Citadel’s Ken Griffin ... world-class office space for our colleagues and reshape both Park Avenue and the Manhattan skyline for decades to come,” a Citadel spokesperson said.