First Republic Bank – the primary source of loans for Redwood Trust non-agency mortgage-backed securities – has received high marks for its jumbo originations. FRB’s originations are concentrated around San Francisco, largely for wealthy borrowers. After relying on CitiMortgage for all of the loans in its first post-bust non-agency MBS issuance, Redwood has relied heavily on FRB. The lender accounted for a slight majority of the four securities totaling $1.41 billion Redwood has issued in 2011 and at the beginning of 2012 ...