• 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]

• Archibald "Archie" Cox, Jr., the former CEO of Morgan Stanley International who was appointed chairman of Barclays Americas in 2008, has paid $12 million for a 49th floor apartment at One Beacon Court. The three-bedroom pad (left), which had most recently been listed for $14.4 million, was sold by Muirfield Capital Management chairman John Chalsty and his wife Jill. [Cityfile, floorplan]
• Retired tech exec Lawrence Mueller and his wife Mary Kay have put their 25th floor condo at 15 CPW on the market for $16.5 million, or nearly three times more than what they paid for it back in December '07. [Real Deal, PDE]
• Real estate magnate Murray Goodman has dropped the price of his duplex at 960 Fifth Avenue for the second time since listing it for $32.5 million in January. The four-bedroom co-op, which Goodman bought for $1.41 million back in 1981, is now priced at $27.6 million. [Cityfile, Sotheby's]