Delinquency rates on subprime mortgages increased in the third quarter after showing strong improvement earlier in the year. As of the end of September, the subprime delinquency rate was 18.61 percent, according to Black Knight. The rate increased from 16.80 percent in June. As with overall mortgage performance, hurricanes had an impact on subprime delinquencies. And while delinquencies increased, they’re below the 19.03 percent level at ... [Includes one data chart]