$15 million in November 2012 Buyer:
Kenneth Griffin, hedge fund billionaire Seller:
Richard Cooper, manager of hedge fund Cooperfund
The Citadel founder snapped up the Art Deco high rise's 66th floor 7,900-square foot unit right before it publicly listed for sale in the priciest sale of a Chicago condo, ever. The unit has three bedrooms, four full baths, five half baths, a private terrace and three garage spaces in the building's parking lot. Griffin already owns the penthouse directly above this one. He reportedly bought four properties in Palm Beach, Fla. recently for nearly $130 million-- again, in an off-market deal.
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