Shares of Ballard Power Systems Inc. (NASDAQ:BLDP – Get Free Report) (TSE:BLD) were up 6.5% during trading on Thursday . The company traded as high as $4.27 and last traded at $4.26. Approximately 1,930,177 shares changed hands during trading, a decline of 33% from the average daily volume of 2,861,062 shares. The stock had previously […]