As earnings season got underway for publicly owned lenders, First Republic Bank, Flagstar Bank and Redwood Trust reported increased jumbo loan production in 2017. First Republic produced $11.57 billion of single-family mortgages in 2017, up 8.9 percent from the previous year. Jumbos account for a large majority of its lending. Flagstar originated $8.80 billion of jumbo loans last year, a 37.5 percent increase from 2016. And Redwood, which sources loans from correspondents, purchased ...