A total of $333.1 billion of residential MBS backed by freshly originated home loans were issued during the second quarter of 2016, a 30.3 percent increase over the first three months of the year. But that trailed the 34.2 percent surge in primary-market originations during the same period. The result was a further decline in the mortgage securitization rate, from 67.3 percent in the first quarter to 65.3 percent in the second, according to a new Inside MBS & ABS analysis. It marked the lowest securitization rate since 2004, when the non-agency MBS market was just beginning to take off. The biggest decline was...[Includes one data table]