Hi fsulevine, A month away may be the signal for some Shorts to get out in case the PDUFA decision goes in favor on KERX. Also, the decision could come earlier. http://www.nasdaq.com/symbol/kerx/short-interest [pre] Settlement Date Short Interest Avg Daily Share Volume Days To Cover 9/15/2017 17,643,928 1,454,593 12.129804 [/pre] Good luck with your investments!