Japan’s Nikkei nears bear market as AI rout batters tech valuations Ayushman Ojha Thu, November 5, 2026 at 9:33 PM EST 1 min read 9984.T -10.35% 6857.T -4.36% ^N225 -6.00% ^IXIC -5.52% 285A.T -9.22% Investing.com-- Japan's Nikkei 225 index approached bear-market territory on Friday, as a deepening global selloff in artificial intelligence and semiconductor stocks triggered another wave of heavy selling in technology-heavy Japanese companies.
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The Nikkei fell 6.2% to 57,320.01 points by 01:50 GMT, extending losses after Thursday's 1.8% decline, reaching its lowest close in more than five months.
The latest drop put the index more than 20% below its June 22 record peak of 72,831.73, meeting the conventional definition of a bear market.
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Semiconductor-related shares led the retreat, tracking a sharp overnight selloff on Wall Street. The Philadelphia Semiconductor Index plunged more than 12% on Thursday, its steepest intraday decline since March 2020, while the Nasdaq Composite fell 5.5%.
In Japan, Advantest (TYO:6857) shares plunged 9%, while SoftBank Group (TYO:9984) tumbled 11% and Kioxia Holdings (TYO:285A) lost 10%. The selling followed Thursday's steep declines, when Advantest slumped 15%, Lasertec dropped 14%, and Kioxia fell 13%.
Investors are increasingly questioning whether massive investments in AI infrastructure will generate sufficient returns to justify elevated technology valuations.
Concerns that U.S. political changes could slow data-centre expansion have added to pressure on chipmakers, while profit-taking and institutional deleveraging have accelerated the retreat.
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