Hokuriku Electric said on Friday all three reactors at its Onagawa nuclear plant on the north-east coast shut down automatically after the quake.

BBC: Japan quake: Nuclear closures to cause power shortages

Also in Tokyo, Hokuriku Electric Power dropped 2.5% after the firm said that it forecasts to have broken even in the recently ended fiscal year, recovering from a Y5.2 billion loss the year before.

WSJ: Asian Shares Recover From Recent Losses