Wells Fargo services more than a third of the jumbo mortgages serviced by the top 30 lenders in the sector, according to a new analysis by Inside Nonconforming Markets. Wells serviced a portfolio of jumbo mortgages with an unpaid principal balance of $268.16 billion as of the end of the first quarter of 2016. The bank’s jumbo servicing portfolio increased by 13.0 percent compared with the first quarter of 2015. The group of 30 companies handled ... [Includes one data chart]