Only 69.1 percent of home mortgages originated in 2016 wound up in agency or non-agency MBS issued last year, according to a new Inside MBS & ABS analysis. It was the second-lowest annual mortgage-securitization rate on record, and the third year in a row that the rate failed to reach the 70.0 percent mark. The low securitization rate mostly results from the fact that relatively few jumbo mortgages get out of bank portfolios and into the non-agency MBS market. According to Inside Mortgage Finance estimates, some $381.0 billion of jumbo mortgages were originated...[Includes one data table]