Mortgage securitization made a small comeback in 2015, but softness in the non-agency MBS sector and higher guaranty fees required by Fannie Mae and Freddie Mac still played a huge influence in the market, according to a new Inside MBS & ABS analysis. An estimated $1.210 trillion of newly-originated home loans were pooled in mortgage securities last year, representing 69.7 percent of the $1.735 trillion in new first-lien originations. That was up slightly from the 67.8 percent back in 2014, which ranked as the lowest securitization rate since 2004, when just 62.6 percent of new originations were securitized. One issue is...[Includes one data table]