Former analysts at Moody’s Investors Service blamed the poor performance of mortgage-backed security ratings on the rating service’s quest for market share. At a hearing last week by the Financial Crisis Inquiry Commission, Phil Angelides, chairman of the FCIC, called Moody’s “a Triple-A factory.” Angelides noted that Moody’s placed Aaa ratings on 9,029 MBS in 2006 alone. According to the Inside Mortgage Finance MBS Database, Moody’s rated...