The REIT is selling a debt portfolio valued at $6 billion. : (Bloomberg)—New Residential Investment Corp., a real estate investment trust focused on housing, is selling a portfolio of debt with a face value of $6 billion, according to people with knowledge of the matter. The REIT, managed by an affiliate of Fortress Investment Group LLC, has been selling the non-agency debt over the past week to a range of institutional investors, with the transactions expected to be finalized Tuesday, said one of the people, who asked not to be identified because the deals are private.