A subsidiary of Nomura Holdings is working on issuing a non-agency jumbo mortgage-backed security comprised solely of originations by First Republic Bank. The pending deal is set to receive a AAA rating from Kroll Bond Rating Agency, while Fitch Ratings warned that the proposed credit enhancement levels on the deal are too low for a AAA rating. The $440.08 million NRP Mortgage Trust 2013-1 is structured to include credit enhancement of 7.60 percent on the tranche with a AAA rating from KBRA. Fitch said ...