As of 9:15 a.m., the 225-issue Nikkei Stock Average added 276.23 points, or 1.40 percent, from Thursday to 19,951.00.
The broader Topix index of all First Section issues on the Tokyo Stock Exchange, meanwhile, gained 17.84 points, or 1.25 percent, at 1,444.57.
Nonferrous metal, iron and steel and real estate-linked issues comprised those that gained the most in the opening minutes after the morning bell.
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