The market for rating subprime MBS deals saw something of a shakeup in the early part of 2005, as Standard & Poor’s hold on the market loosened a bit, a new Inside B&C Lending analysis reveals. Considered by many to be the most conservative of the rating agencies, S&P remained the dominant figure in the subprime rating market during the first quarter – the $99.08 billion in deals it analyzed represented 95.9 percent of…