Mr. Cooper Group and PennyMac Financial Services dominated the small group of publicly traded nonbank mortgage lenders with $525 million in net mortgage banking income for the fourth quarter. (Includes data chart.)

Most of the banking sector's 1% drop in servicing for others is attributable to declining balances at Wells Fargo and JPMorgan Chase. (Includes data chart.)

Although secondary market sales by bank mortgage banking platforms were down 8% in the fourth quarter, it still ranked as one of the busiest periods since early 2013. (Includes two data charts.)