NEW YORK–(BUSINESS WIRE)–Kroll Bond Rating Agency (KBRA) assigns preliminary ratings to 110 classes from Fannie Mae’s Connecticut Avenue Securities, Series 2018-C06 (CAS 2018-C06), a credit risk sharing transaction with a total note offering of $918,188,000. The Offered Notes represent unsecured general obligations of Fannie Mae, with payments subject to the credit and principal payment risks of the CAS 2018-C06 Reference Pool. The aggregate CAS 2018-C06 Reference Pool consists of 105,386 res