Securitization rates for newly originated home mortgages remained at historically low levels during the first quarter of 2015, according to a new Inside MBS & ABS market analysis. The ratio of new MBS issuance to primary-market mortgage originations was just 71.6 percent during the first quarter. That’s down from 75.4 percent for all of last year and the record high of 88.8 percent back in 2009. The slowdown in securitization rates is...[Includes one data table]