Private mortgage insurers grew their share of the primary mortgage insurance market during 2016 even though they lost some ground during the second half of the year, according to a new Inside Mortgage Finance ranking and analysis. Private MIs wrote an estimated $270.30 billion of new mortgage insurance last year, a robust 23.1 percent increase from 2015. The main engine was a 24.2 percent increase in traditional, or flow, MI business, coupled with a jump in bulk primary coverage – though such activity totaled just $860.0 million in 2016. Private MIs covered...[Includes three data tables]