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• Less than two months after investor and philanthropist Ephraim Gildor put his duplex penthouse at the Park Laurel back on the market for $28 million, it looks like he's already found a buyer. The 7,758-square-foot apartment with seven bedrooms and terrace went into contract late last week. [Cityfile, PDE]
• Hedge fund manager Steve Eisman, who took a loss on the sale of his old apartment at 1125 Park Avenue back in August, has picked up something new. He's closed on a four-bedroom penthouse duplex at 1120 Park Avenue for $7.4 million, which is 36 percent less than the original asking price. [NYT]
• Christopher Nixon Cox, the grandson of Richard Nixon, has sold his two-bedroom apartment at 10 East 70th Street for $1.4 million. [Curbed]
• Renowned sculptor Louise Bourgeois has been identified as the buyer behind the purchase of costume designer William Ivey Long's townhouse on West 20th Street. Bourgeois' Easton Foundation picked up the building for $4.75 million and will reportedly use it as an exhibition space and archive for Bourgeois' collection of books and film. [NYT]