Mortgage production ran into a seasonal buzz-kill and stiffer headwinds from interest rates during the third quarter of 2015, leading to a modest decline in volume, according to a new InsideMortgage Finance market analysis and ranking. An estimated $455.0 billion of single-family first-lien mortgages were originated during the third quarter, down 7.1 percent from the second quarter of 2015. But on a year-to-date basis, total originations were up 42.9 percent from the first nine months of last year. In fact, at $1.350 trillion, production through the end of September had already topped last year’s $1.300 trillion. A lot of this year’s increase came...[Includes two data tables]