Fannie Mae and Freddie Mac continued to trim their retained investment portfolios in late 2015 with most of the focus on shrinking their non-agency MBS and holdings of their own securities. Freddie Mac’s retained mortgage portfolio declined 15.1 percent last year, ending at $346.91 billion, safely below the $359.3 billion cap set by the Federal Housing Finance Agency. The government-sponsored enterprise reduced its non-agency MBS holdings by $25.60 billion, or 38.8 percent, from its yearend 2014 level. While that included hefty declines in both subprime and Alt A MBS, the biggest decline, 41.3 percent, was...[Includes one data table]