Top commercial banks reported substantial increases in mortgage production during the second quarter, but mortgage-banking income was lagging, according to a new analysis of earnings reports by Inside Mortgage Trends. In aggregate, the five large banks reported $124.25 billion in mortgage originations for the second quarter, a hefty 30.1 percent increase from the first three months of the year. At the high end, Wells Fargo said its mortgage ... [Includes one data chart]