Standard & Poor’s ranked as the top rating service in the non-mortgage ABS market and also claimed the top spot in the sputtering non-agency MBS sphere, according to a new Inside MBS & ABS ranking of first-quarter activity. S&P rated seven of the 11 non-agency MBS issued in the first three months of 2014, or 78.0 percent based on dollar volume. Once the perennial leader in non-agency MBS ratings, S&P’s market share has been around 40.0 percent in recent years. DBRS ranked...[Includes two data charts]