US shares closed at record levels after Bank of Japan's announcement to increase its asset buying plan to 726 billion dollar a year. The Dow Jones Industrial Average rose one per cent to close at a record 17,390.52. The S&P 500 also closed at an all-time high to reach 2,018.05, up one per cent. Markets in Europe and Asia had recorded strong gains earlier. On the currency markets, the dollar rose to a near seven-year high against the yen, rising above 112 yen to the dollar. The stronger dollar helped to push the price of oil lower. US crude dipped below 80 dollar a barrel, but recovered to end 46 cents lower at 80.66 dollar a barrel.ss News Content