The bank made more money from selling home loans to investors during the quarter, allowing it to post a 2 percent increase in mortgage banking income even as it made 40 percent fewer home loans compared to the same period last year. The results underscore how critical mortgage income still is to Wells Fargo. Fourth-quarter mortgage volumes are set to be lower than the $48 billion Wells Fargo made in the third quarter of 2014, Chief Financial Officer John Shrewsberry said on a conference call with analysts.