Moody’s Investors Service started using new criteria to rate prime non-agency mortgage-backed securities at the end of February. As part of the new criteria, the rating service is allowing non-agency MBS issuers to have access to the tool used to estimate Moody’s initial calculation of triple-A stress loss for a potential security. Moody’s Individual Loan Analysis model, known as MILAN, will be the main quantitative tool for collateral analysis by ...