NEW YORK–(BUSINESS WIRE)–Kroll Bond Rating Agency, Inc. (KBRA) assigns ratings to six classes of mortgage pass-through certificates from Western Asset Management Company’s inaugural non-prime RMBS securitization, Arroyo Mortgage Trust 2018-1 (ARRW 2018-1). Arroyo Mortgage Trust 2018-1 (ARRW 2018-1) is the first residential mortgage-backed securities (RMBS) transaction issued by the Sponsor (Arroyo Mortgage Acquisition Company I, LLC) an affiliate of Western Asset Management Company (WAMCO Fun
