Real estate investment trusts that focus on the residential MBS market reported a modest increase in their portfolios during the second quarter of 2017. The 15 mortgage REITs tracked by Inside MBS & ABS held a combined $233.34 billion of residential MBS at the end of June. That was up 1.4 percent from the end of the first quarter, though down 2.9 percent from the midway point in 2016. Ten of the REITs reported...[Includes one data table]