Standard & Poor’s rated $11.72 billion of non-agency MBS issued in 2013, making it the most active rating service in the market by dollar volume, although DBRS rated considerably more deals, according to a new ranking and analysis by Inside MBS & ABS. In its heyday, S&P used to rate more than 90 percent of new issuance of non-agency MBS, but in 2013 it accounted for just 40.0 percent of the market by dollar volume. DBRS wasn’t too far behind with a 36.0 percent share, followed by Kroll Ratings and Fitch Ratings. Moody’s Investors Service rated...[Includes two data charts]