Half of the six active private mortgage insurers in the market reported solid earnings gains on their core MI business during the fourth quarter of 2017, enough to offset losses at the other three firms. As a group, the private MI industry generated $834.7 million in pre-tax income from their U.S. mortgage insurance operations during the fourth quarter. That was up 7.1 percent from the previous period and raised full-year income to $3.06 billion. The full-year ... [Includes one data chart]