TOKYO, Oct 7 (Reuters) - Japan's Nikkei average rose 0.9 percent on Wednesday, helped by gains in bank shares such as Mitsubishi UFJ Financial Group after optimism about the global economy and U.S. corporate earnings boosted Wall Street.
Trading houses including Mitsubishi Corp climbed on higher commodity prices, with gold hitting record highs on Tuesday as the sinking dollar drove inflation-wary investors to buy the precious metal and almost every other commodity.
The benchmark Nikkei gained 86.45 points to 9,778.25, after inching up 0.2 percent the previous day.
The broader Topix added 1.3 percent to 883.12. (Reporting by Aiko Hayashi)