With refinance activity tapering off, the retail production channel lost some of its edge during the second quarter of 2017, according to a new Inside Mortgage Trends analysis of agency mortgage-backed securities. Retail production accounted for 50.6 percent of the $290.63 billion of single-family mortgages securitized by Fannie Mae, Freddie Mac and Ginnie Mae in the second quarter. Including modified loans and those with no channel identification ... [Includes one data chart]