Well-known jumbo originators contributed most of the collateral for Redwood Trust’s pending $415.73 million non-agency mortgage-backed security, but a handful of smaller lenders also benefitted from Redwood’s jumbo correspondent program. These lenders have little securitization experience but received strong endorsements from rating services and due-diligence firms. Redwood purchased most of the loans to be included in Sequoia Mortgage Trust 2012-1 on a flow basis, according to Kroll Bond Rating Agency. Flagstar Bank led the smaller originators, with $31.84 million of its loans included in the security ...