Harlem developers could default 

Rockpoint Group LLC and Stellar Management could default on a $225 million mortgage at the 1,230-unit, rent-controlled Riverton Apartments in Harlem. Since obtaining the mortgage in December 2006, the developers have made little progress on converting half of the complex’s units to market-rate housing. The mortgage was split up and sold to multiple investors as bonds, a common practice before the credit crunch but now a rarity.