Short interest in Geron Corp (NASDAQ:GERN) decreased during the last reporting period, falling from 70.45M to 58.46M. This put 9.57% of the company's publicly available shares short.

Based on the recent average volume of 12.60M shares traded per day, it would take 4.64 day(s) for holders of this short interest to close out their positions without sending the stock sharply higher.