A subsidiary of Nomura Holdings is preparing to issue a non-agency jumbo MBS, the Wall Street firm’s first deal backed by new production since 2007. Rising interest rates and concerns about investor demand don’t seem to have put a damper on non-agency MBS issuance, as Redwood Trust cranked out another jumbo deal last week and Springleaf Finance issued a security backed by vintage subprime mortgages this week. The $440.08 million non-agency jumbo MBS from Nomura Corporate Funding Americas is set to receive a AAA rating with credit enhancement of 7.60 percent on the top-rated tranche, according to a presale report released this week by Kroll Bond Rating Agency. The credit enhancement was increased due to geographic concentration risk because 74.0 percent of the mortgages to be included in NRP Mortgage Trust 2013-1 were originated in California. Fitch Ratings warned...