Short Interest in Karyopharm Therapeutics Inc. (NASDAQ:KPTI) Rises By 20.9%

Karyopharm Therapeutics Inc. (NASDAQ: KPTI - Get Free Report) was the target of a large increase in short interest in the month of March. As of March 13th, there was short interest totaling 3,592,118 shares, an increase of 20.9% from the February 26th total of 2,971,195 shares. Approximately 19.9% of the company's shares are short sold.