New residential MBS production represented 78.4 percent of primary-market mortgage originations during the first nine months of 2013, according to a new Inside MBS & ABS analysis. A total of $1.243 trillion of residential MBS were issued during the first three quarters of this year, with only $12.2 billion coming from the non-agency MBS market. At the same time, an estimated $1.585 trillion of new home loans were made by lenders, yielding a 78.4 percent securitization rate. The securitization rate was...[Includes one data chart]