Short interest in Geron Corp (NASDAQ:GERN) increased during the last reporting period, rising from 67.14M to 71.51M. This put 11.93% 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 7.64M shares traded per day, it would take 9.36 day(s) for holders of this short interest to close out their positions without sending the stock sharply higher.