Ballard Power Systems Inc. (NASDAQ:BLDP – Get Rating) (TSE:BLD) gapped down prior to trading on Wednesday . The stock had previously closed at $4.41, but opened at $4.28. Ballard Power Systems shares last traded at $4.25, with a volume of 623,495 shares traded. Analysts Set New Price Targets BLDP has been the subject of a […]