Short interest in Geron Corp (NASDAQ:GERN) increased during the last reporting period, rising from 64.52M to 65.07M. This put 10.82% of the company's publicly available shares short.

Short interest for Geron gives investors a sense of the degree to which investors are betting on the decline of Geron's stock. Short interest data is updated every two weeks.

Based on the recent average volume of 15.94M shares traded per day, it would take 4.08 day(s) for holders of this short interest to close out their positions without sending the stock sharply higher.