Redwood Trust is set to issue its first jumbo mortgage-backed security backed predominantly by loans with looser underwriting standards than the super-prime jumbos that have dominated the market. The planned $316.49 million Sequoia Mortgage Trust 2017-CH-1 includes many non-qualified mortgages and other loans that fall outside of Redwood’s traditional Select program. Kroll Bond Rating Agency and Moody’s Investors Service assigned preliminary AAA ratings to the MBS last week ...