This hedge fund billionaire owns several of the most expensive apartments in the world

Kenneth Griffin, manager of the Chicago-based hedge fund Citadel, is likely owner of the single most expensive apartments in New York, Chicago, and Miami, reported the New York Times' Robert Frank. The hedge fund billionaire bought nearly $300 million worth of real estate in Chicago, New York and Miami, and has broken real estate records in each of the three cities over the past four months. That includes two floors of Chicago's Waldorf Astoria for a little under $30 million, three floors at...