New mortgage securities issuance by private conduits continues to run well ahead of the pace set last year, thanks to a modest gain in volume during the second quarter. According to the Inside Mortgage Finance MBS Database, a total of $251.35 billion of non-agency mortgage securities were issued by private conduits during the second quarter. That was up 2.5 percent from the first quarter volume, and brought year-to-date issuance to $496.53 billion, an increase of… [Two data tables included]