One of the biggest factors limiting the issuance of jumbo mortgage-backed securities is the strong appetite banks have to hold jumbos in portfolio. Redwood Trust, which aims to issue jumbo MBS, had adapted by competing with banks and working with them. Redwood had a gross margin of 140 basis points on its jumbo business in the first quarter of 2016, much higher than the 59 basis points in gross margins on jumbos Redwood had in the full year of 2015 ...