Nikkei gains 1.9% as Anthropic's US IPO filing lifts AI stocks
Japan's Nikkei rose 1.91% to 63,374.45 as AI-related shares rallied after Anthropic filed for a US initial public offering, according to Reuters.
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what happened
Japan's Nikkei index was up 1.91% at 63,374.45 as of 0142 GMT, after climbing as much as 2.4% earlier in the session. If the gain holds, the index will end a three-session losing streak. The broader Topix added 0.61% to 3,997.09.
Sentiment was supported by Anthropic's IPO filing in the US, which showed steep losses and rapid revenue growth, along with the company's aim to build AI systems that could reshape the global economy despite high development costs. The Philadelphia semiconductor index gained 2.8% overnight. Advantest jumped 10% and was the main driver of the Nikkei, SoftBank Group rose 6.94% and Tokyo Electron climbed 3.35%, Reuters reported.
Breadth remained weak, however. Of more than 1,500 stocks on the Tokyo Stock Exchange's prime market, 49% rose and 47% fell. Daiichi Sankyo was the biggest drag, sliding 6.53%.
why it matters
The Nikkei often moves in line with the SOX, so Japanese tech shares depend on the US chip sector. Investor caution ahead of this week's earnings from Alphabet and Microsoft suggests the rally is narrow and may not last.
market impact
Japanese AI and chip stocks: support from the SOX rally and Anthropic news
tags
instruments
sources
- Japan's Nikkei rises as Anthropic IPO filing lifts AI-shares — Reuters, 27 October 2026 at 02:02 UTC
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