Short interest in Ballard Power Systems Inc (NASDAQ:BLDP) increased during the last reporting period, rising from 12.68M to 14.58M. This put -% of the company's publicly available shares short.

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

Based on the recent average volume of 7.53M shares traded per day, it would take 1.94 day(s) for holders of this short interest to close out their positions without sending the stock sharply higher.