From LLNYC: Why have one combo unit in the Beresford when you can have two? Hedge fund billionaire Bill Ackman has just bought himself yet another apartment at his favorite building, the Beresford, for $9 million, according to city records. Ackman has lived in the building since 2006, when he and his (now ex) wife Karen paid $26 million for a duplex unit on the 17th and 18th floor. With this latest purchase, it seems like he is planning […]