The secondary market in mortgage servicing rights heated up during the second quarter of 2017, fueling further growth by nonbanks in the servicing business. An estimated $133.36 billion of MSR changed hands during the second quarter, according to an analysis by Inside Mortgage Trends, an affiliated newsletter. That was up 21.5 percent from the first three months of the year, and brought total MSR transfers to $243.14 billion at the midway point of 2017, up 53.6 percent from a year ago. Most of the activity has been...[Includes three data tables]