Fannie Mae and Freddie Mac holdings of nonprime mortgage assets continued to decline in the first quarter of 2018, although changes in how the two government-sponsored enterprises report this data make comparisons to earlier periods difficult. Fannie reported $3.42 billion fair market value of its nonprime MBS holdings as of the end of March, though this appears to result from moving some of these assets from its available-for-sale portfolio to ... [Includes one data chart]