Tokyo Stock Market Today: Nikkei 225 Falls 2.3% on AI Bubble Jitters and Yen Intervention Fears (Nov 21, 2025)
TOKYO – Japan’s stock market swung sharply back into risk‑off mode on Friday, November 21, 2025, as global worries over an “AI bubble”, mixed U.S. data and growing policy uncertainty at home hit sentiment. The Nikkei 225 closed at 48,677.50, down 1,146.44 points, or 2.30%, erasing much of Thursday’s powerful rebound and extending what is now one of its most volatile weeks since the spring. Investing.com+1 By contrast, the broader TOPIX index slipped just 0.06% to around 3,297.73, as gains in many domestic and defensive names offset the tech‑led slump that dragged on the Nikkei’s price‑weighted heavyweights. MarketScreener+1 Nikkei 225 Tumbles While TOPIX