Short interest in Federal National Mortgage Association Fannie Mae (OTC:FNMA) increased during the last reporting period, rising from 18.40M to 18.48M. This put 1.6% of the company's publicly available shares short.

Based on the recent average volume of 29.27M shares traded per day, it would take 1 day(s) for holders of this short interest to close out their positions without sending the stock sharply higher.