The second prime non-agency mortgage-backed security from an affiliate of American International Group is a lot like the MBS the company issued in March, but the new deal received favorable treatment from the rating services, with lower credit enhancement on the senior tranche. PSMC 2018-2 Trust will be a $429.4 million issuance, according to presale reports published last week. The mortgages have an average credit score of 773, an average debt-to-income ratio of 33.0 percent ...