Look for increased volume of new non-agency mortgage-backed securities issuance – and more companies issuing these deals – in 2013, industry analysts say. Underwriting standards could loosen somewhat as investor demand strengthens. Through the beginning of December, $3.46 billion in non-agency jumbo MBS was issued in 2012, according to the Inside Mortgage Finance MBS Database. Redwood Trust accounted for 56.7 percent of that volume, with an affiliate of Credit Suisse Group accounting for the rest ...