Tokyo Stock Market Today (Dec. 18, 2025): Nikkei Slides to 3-Week Low as AI Jitters Hit Tech; BOJ Rate-Hike Watch Weighs on Banks
The Nikkei 225 closed down 1.03% at 49,001.50 on Thursday, its lowest since November 25, as tech stocks slumped amid renewed doubts over AI and data-center profitability. SoftBank Group dropped 3.76%, while Advantest and Fujikura also fell sharply. The Topix slipped 0.37%. Caution grew ahead of Friday’s Bank of Japan policy decision.