Short interest in Karyopharm Therapeutics Inc (NASDAQ:KPTI) increased during the last reporting period, rising from 353.89K to 743.71K. This put 4.69% of the company's publicly available shares short.

Based on the recent average volume of 503.62K shares traded per day, it would take 1.48 day(s) for holders of this short interest to close out their positions without sending the stock sharply higher.