Officials at Redwood Trust, the leader in issuance of jumbo mortgage-backed securities since 2010, suggested this week that issuance of jumbo MBS from the firm this year likely won't hit the level seen in 2013. "Our preferred distribution for jumbo loans is securitization since we can retain attractive investments for our portfolio," Brett Nicholas, Redwood's president, said this week on a call with investors. "Today, however, whole-loan sales offer better execution." He said...