Fannie Mae and Freddie Mac continue to let their holdings of nonprime mortgages gradually taper off, according to a new analysis by Inside Nonconforming Markets. The government-sponsored enterprises held a total of $91.01 billion of nonprime mortgages at the end of September, largely in purchased/guaranteed loans originated before the financial crisis. The holdings were down by 21.2 percent on an annual basis. In the past year, Fannie has ... [Includes one data chart]