As default rates on vintage non-agency MBS have improved, performance and investor proceeds this year will largely be based on servicers’ actions, according to Standard & Poor’s. Loss mitigation, work-out timelines and other servicer behaviors are of particular concern for investors. S&P said its outlook for performance of vintage non-agency MBS is stable. Feedback from servicers indicates that the number of new loan modifications on mortgages in non-agency MBS this year will be near levels seen last year and well below activity in 2010. Instead of quantity, S&P said, servicers have focused on quality. “It appears...