• Hedge funder John Griffin and his wife Amy, who paid $32.25 million for a full-floor apartment at 1030 Fifth Avenue last year, are selling their old apartment in the same building. Now that they've finished renovations on the new spread, the couple has quietly put their 8th-floor apartment on the market with Serena Boardman for $16.5 million. [NYT]
• The townhouse at 11 East 82nd Street that was purchased by Ron Perelman as a home for one of his executives back in 1996 and was later acquired by private investor Keith Gollust, has gone into contract after more than a year and a half on the market. The limestone mansion was most recently priced at $29.5 million. [Cityfile, Sotheby's]
• Tokyo-born filmmaker Keiko Ibi is switching things up at 15 CPW. Back in July, she put her one-bedroom condo on the market for $3.75 million. Now she's partnered with her 7th floor neighbors, Young-oh and Byungwha Yoon, and they've listed their two apartments together for a combined $10.285 million. Corcoran's Carrie Chiang has the listing. [Cityfile, Corcoran]

It's not all bad news for the upper-end of Manhattan's residential real estate market. Hedge fund manager John Griffin, who once worked for Julian Robertson before founding Blue Ridge Capital, and his wife Amy, have paid $32.25 million for a 10th-floor spread at 1030 Fifth Avenue, where Diane Sawyer and Mike Nichols are also residents. The apartment, which wasn't even officially on the market, was owned by private equity exec Richard Schmeelk and his wife Priscilla. [NYO]