As interest-only mortgages originated in the run-up to the financial crisis reset, performance has varied depending on the extent of borrowers’ payment shock, according to analysts at Bank of America Merrill Lynch. The analysts noted that delinquencies increase significantly when an IO borrowers’ monthly payment more than doubles, while some borrowers with strong credit or low loan-to-value ratios have been able to refinance or receive a loan modification. IOs include a ...