The 225-issue Nikkei Stock Average added 1,454.28 points, or 8.04 percent, from Tuesday to close the day at 19,546.63.
The broader Topix index of all First Section issues on the Tokyo Stock Exchange, meanwhile, gained 91.52 points, or 6.87 percent, to finish at 1,424.62.
All industry categories closed in positive territory, with marine transportation, real estate, and iron and steel issues comprising those that gained the most by the close of play.
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