Issuance of jumbo mortgage-backed securities started to pick up speed in November after a slow start to the fourth quarter of 2015. Redwood Trust plans to issue a $337.08 million jumbo MBS with a number of unique characteristics, according to presale reports. Sequoia Mortgage Trust 2015-4 will be backed by 15-year fixed-rate mortgages, 75.5 percent of which were originated by UBS Bank. Kroll Bond Rating Agency noted that this will be the first post-crisis deal to include ...