earnings

Shares of Westport Innovations Inc. (NASDAQ: WPRT) (TSE: WTP.TO), a provider of technologies that allow internal combustion engines to run on natural gas, biomethane and hydrogen, were down six percent at mid-session today after the company Tuesday announced an increased net loss for the first nine-months of its fiscal year ending March 31, 2011.

Shares of smart grid and wind turbine technology company American Superconductor Corporation (NASDAQ: AMSC) were trading up more than seven percent at mid-day after announcing nine-month financial results -- including tripled profits year over year -- and increasing guidance for Fiscal 2010 net income by 10 percent.