Commercial banks and savings institutions reported a record $9.38 billion in net income from mortgage banking activity during the third quarter of 2012, according to a new ranking and analysis by Inside Mortgage Trends. The call report data underscore what was already apparent in earnings reports from a broad cross-section of lenders: mortgage banking has been exceptionally profitable in 2012. Banks and thrifts generated a whopping $25.25 billion in mortgage banking income over ... [Includes one data chart]