Short interest in Altimmune Inc (NASDAQ:ALT) increased during the last reporting period, rising from 41.93M to 47.63M. This put 24.52% of the company's publicly available shares short.

Based on the recent average volume of 5.90M shares traded per day, it would take 8.07 day(s) for holders of this short interest to close out their positions without sending the stock sharply higher.