While originations included in non-agency jumbo mortgage-backed securities in recent years have been of high-quality, significant differences exist among originators, according to a new analysis by Inside Nonconforming Markets. The average credit score on mortgages included in Redwood Trust’s non-agency jumbo MBS from 2011 through the first quarter of this year was 771.2, largely driven by First Republic Bank, which accounted for 47.0 percent of originations securitized by Redwood ... [Includes two data charts]