Real estate investment trusts that focus on residential MBS continued to pare their investments in the fourth quarter, a trend that may last through the remainder of the year. Interest rate volatility and continued reports of “illiquidity” in the MBS market remain key factors plaguing the sector. Still, prices for agency product remain strong and, as Inside MBS & ABS noted recently, commercial banks and thrifts continue to add to their holdings, which reached a record $1.643 trillion at yearend 2015. The 16 public mortgage REITs tracked by this publication held $233.17 billion of MBS at year-end, 92.4 percent of which included Fannie Mae, Freddie Mac and Ginnie Mae product. The non-agency market continues to shrink as legacy nonprime securities ...