Delinquency rates on subprime mortgages trended downward during the fourth quarter of 2003, a new Inside B&C Lending analysis reveals. Inside B&C Lending’s survey of large servicers revealed a weighted average 30-plus day delinquency rate of 9.09 percent, down from 12.26 percent in September. The serious delinquency rate, a measure of loans 60 or more days past due or in foreclosure, fell to 7.57 percent from 7.78 percent in