Thanks to strong growth in the agency market, the supply of single-family MBS outstanding continued to grow over the final three months of 2016, a new Inside MBS & ABS analysis reveals. Agency MBS outstanding pushed to a new record, $6.034 trillion, as of the end of last year. The biggest gainer continued to be Ginnie Mae, which reported a 2.2 percent increase in the fourth quarter and a 7.7 percent gain for the year. Freddie Mac matched Ginnie’s fourth-quarter increase, but its year-to-date gain was smaller, 4.2 percent. Fannie Mae had...[Includes two data tables]