The Nikkei Average extended its gains sharply during the morning session, widening its advance toward the close. Stocks with large positive contributions stood out, led by Tokyo Electron, which added approximately 219 points.
At the morning session close on the 25th, the Nikkei Average ended the session up 804.15 points at 66318.14. Estimated trading volume was approximately 899.76 million shares, with 175 Nikkei constituent issues advancing, 50 declining and 0 unchanged.
Buying led from the morning open, with demand dominant at the opening. The index moved higher while tracking U.S. stock-market developments, widening its gains over time and recovering to the 66,300 range toward the morning close.
Tokyo Electron ranked first in terms of positive contribution, pushing the Nikkei Average up by approximately 219 points on its own. Advantest, Ibiden, Fast Retailing and Recruit Holdings also ranked highly.
On the downside, SoftBank Group ranked first in negative contribution, pushing the index down by approximately 134 points. FANUC, Shimizu Corporation, Chugai Pharmaceutical and Socionext were also among the stocks making significant contributions.