NEW YORK–(BUSINESS WIRE)–Kroll Bond Rating Agency (KBRA) assigns preliminary ratings to thirty-five classes of mortgage pass-through certificates from J.P. Morgan Mortgage Trust 2018-9 (JPMMT 2018-9), a prime RMBS transaction. JPMMT 2018-9 contains both prime jumbo (32.2%) and conforming (67.8%) collateral to borrowers with prime attributes. The JPMMT 2018-9 mortgage pool is composed of 884 first-lien mortgage loans with an aggregate principal balance of $513,899,725 as of the cut-off date. T
