The Nikkei average temporarily rose by more than ¥1,000 in Tokyo trading on the 21st and traded around ¥65,100. It remained substantially above the previous day's close.
In trading on the Tokyo stock market on the 21st, the Nikkei average (225 stocks) temporarily rose more than ¥1,000, moving well above the previous day's close of ¥64,075.42.
The market move extended to the Nikkei trading around ¥65,100, with the sharp rise continuing toward the end of the session.
The article does not provide specific reasons or movements by individual stock, showing only the change in the Nikkei's level and its broad course.