Japan’s Nikkei rises 1.91% as AI shares gain after Anthropic filing
Veena Lathe
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Last Updated: 27th October 2026 - 05:31 pm
Japan’s Nikkei rose 1.91% to 63,374.45 on Tuesday after gains in artificial intelligence-related shares followed Anthropic’s filing for a US initial public offering. Advantest provided the biggest boost to the index, although the advance covered less than half of the more than 1,500 Prime Market stocks that traded.
Advantest rises 10% as technology shares lead the move
Advantest rose 10% and provided the biggest boost to the Nikkei, Reuters reported. SoftBank Group gained 6.94%, and Tokyo Electron rose 3.35%.
The Philadelphia Semiconductor Index rose 2.8% overnight, Reuters reported. The move supported Japanese technology shares, which tend to move in tandem with the US chip index.
Japan Nikkei rises as the Topix gains 0.61%
The Topix index gained 0.61% to 3,997.09 as of 7:12 AM IST, equivalent to 0142 GMT, according to Reuters. The Nikkei had risen as much as 2.4% earlier in Tuesday’s session.
Anthropic filing pairs rapid revenue growth with steep losses
Anthropic disclosed plans for a US initial public offering in its filing. The filing disclosed steep losses alongside rapid revenue growth, according to the document.
Anthropic said it aimed to build artificial intelligence technology capable of reshaping the global economy.
Prime Market breadth remains divided before US technology results
On the Tokyo Stock Exchange’s Prime Market, 49% of more than 1,500 traded stocks advanced and 47% declined, Reuters reported.
Daisuke Hashizume, senior strategist at Daiwa Securities, said investors were cautious ahead of results from US hyperscalers Alphabet and Microsoft later in the week.
Reuters reported that the broader market advance remained limited ahead of earnings from major US technology companies.
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