Issuance of prime non-agency mortgage-backed securities increased by 65.3 percent in the first quarter of 2017 compared with the previous quarter, according to a new ranking and analysis by Inside Nonconforming Markets. Some $2.60 billion in prime non-agency MBS were issued in the first quarter. Volume was boosted by relatively strong demand from investors, the emergence of a new participant and the return of a firm that has largely ... [Includes one data chart]