The delinquency rate on non-qualified mortgages in mortgage-backed securities remains low, as issuers are largely avoiding risk-layering. As of the end of 2017, the average current-to-delinquent roll rate for non-QMs in MBS seasoned for one year was 0.4 percent, according to Bank of America Merrill Lynch. Only three non-QM loans tracked by CoreLogic have liquidated so far, and none realized a loss. Non-QM MBS have thicker credit enhancement than ... [Includes one data chart]