A $329.1 million non-agency mortgage-backed security issued by Flagstar Bank at the end of May could be a trendsetter. The deal was backed solely by investment-property mortgages eligible for sale to the government-sponsored enterprises. Moody’s Investors Service noted that pricing policies set by Fannie Mae and Freddie Mac will likely encourage similar deals. “We expect to see more private-label securities backed by GSE-eligible investment-property loans,” the rating service said ...