• Iris Cantor, the widow of Cantor Fitzgerald founder Bernie Cantor, has gone into contract to sell her penthouse at 110 Central Park South. The four-bedroom pad, which Cantor bought for $15 million in 2006, had been listed recently for $11.9 million. [NYO]
• Pro golfer Cristie Kerr and her husband, Aviator Sports president Erik Stevens, have picked up an 11th-floor condo at One Morton Square. The couple paid $2.3 million for the three-bedroom pad. [Cityfile]
• Hedge funder Steve Eisman has unloaded his nine-room apartment at 1125 Park Avenue for $5.2 million, or $1.795 million less than what he paid for it in March 2008. Eisman can afford to take the loss. His Front Point Partners is believed to have made a fortune betting against subprime lending. [NYO]