The Nikkei average jumped 2.15 percent to 42,718.17, the highest closing ever, as traders returned to their desks after a holiday on Monday. The broader Topix index closed up 1.39 percent at 3,066.37.
Tech stocks surged, with heavyweight SoftBank Group climbing nearly 7 percent to a record high following reports that the company has selected four banks to help it prepare for a U.S. listing of its payments app operator PayPay.
Advantest surged 6.3 percent, Lasertec soared 7.1 percent and Tokyo Electron added 1.1 percent.
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