The denial rate on jumbo mortgages varies significantly among lenders, according to an Inside Nonconforming Markets analysis of data from the Home Mortgage Disclosure Act. Among the top 25 lenders, denial rates for jumbo applications in 2015 ranged from a low of 2.3 percent to a high of 76.8 percent. Overall, the top 25 lenders denied 18.1 percent of the $367.49 billion in total unpaid principal balance for jumbo-mortgage ... [Includes one data chart]