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Last year, John Thain — formerly CEO of Merrill Lynch and president of Goldman Sachs — sold his penthouse duplex at 740 Park for $28 million. That’s six years after he first listed it for $ ...

In addition to the Kochs, the elite complex has housed old money — John D. Rockefeller, Jr. and a young Jackie Kennedy Onassis — and new, like Blackstone Group’s Stephen Schwartzman and ...