Publicly-traded nonbank mortgage lenders posted erratic results from their mortgage-banking operations during the fourth quarter of 2015. As a group, the nine companies reported a combined $54.08 million in mortgage-banking income for the fourth quarter, a significant improvement from the $26.26 million loss they posted in the previous quarter. But three of the nonbanks – Impac, Ocwen and PHH Corp. – recorded losses on their mortgage origination ... [Includes one data chart]