Ballard Power Systems, a supplier of fuel-cell power systems, surged to a three-year high after announcing a technology breakthrough that replaces most of the high-cost platinum used in earlier design.
Ballard gained 24% to $4.59 at 3:08 pm, in New York, the most intraday in more than a year and the highest since April 2014. Nisshinbo Holdings, which has been working with Ballard on the project since 2013, rose a record 26% to 1 475 yen ($13.34) at the close in Tokyo.