Japanese stocks climbed, paring their worst weekly performance since 2008, as the yen tumbled after the Bank of Japan and some Group of Seven countries said they began intervening in currency markets as the country battles to control a nuclear accident.
The yen depreciated 3 percent to 81.32 per dollar as of 10:40 a.m. in Tokyo from 78.89 yesterday in New York. It reached 76.25, the highest level against the dollar since World War II, yesterday in New York as increased risk of radiation leaks from a crippled nuclear power station boosted speculation Japanese investors will bring home overseas assets.

Against the euro, Japan’s currency depreciated to 114.62 from 110.38 at the close of trading yesterday in Tokyo.