Short interest in Athersys Inc (OTC:ATHX) increased during the last reporting period, rising from 170.11K to 329.89K. This put 1.51% of the company's publicly available shares short.

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

Based on the recent average volume of 1.40M shares traded per day, it would take 1 day(s) for holders of this short interest to close out their positions without sending the stock sharply higher.