NEW YORK–(BUSINESS WIRE)–Kroll Bond Rating Agency (KBRA) assigns preliminary ratings to twenty-seven classes of mortgage pass-through certificates from J.P. Morgan Mortgage Trust 2018-1 (JPMMT 2018-1), a prime RMBS transaction. JPMMT 2018-1 contains both prime jumbo (58.1%) and high-balance conforming (41.9%) collateral to borrowers with prime attributes. The JPMMT 2018-1 mortgage pool is composed of 735 first-lien mortgage loans with an aggregate principal balance of $463,721,641 as of the c
