NEW YORK–(BUSINESS WIRE)–Kroll Bond Rating Agency (KBRA) assigns a rating of ‘BBB- (sf)’ to the Series 2018-FT1 Term Notes from PMT ISSUER TRUST – FMSR, PennyMac Corp. (PMC) master trust issuer of notes backed by participation certificates evidencing participation interest in mortgage servicing rights (MSR) on loans underlying Fannie Mae guaranteed mortgage backed securities. KBRA’s rating on the notes is primarily dependent upon the rating of PennyMac Mortgage Investment Trust (PMT), as guar