A sharp divide in the decline of nonprime mortgages held by the government-sponsored enterprises persists, according to a new analysis by Inside Nonconforming Markets. Holdings of nonprime mortgage-backed securities are down much more sharply at Fannie Mae and Freddie Mac than the GSEs’ holdings of purchased or guaranteed nonprime loans. Fannie and Freddie held a combined $50.78 billion in nonprime MBS as of the end of ... [Includes one data chart]