U.S. AI company Anthropic published its SEC-filed listing application (S-1) as it plans to list on Nasdaq, with the development reportedly likely to spill over to Japan's AI semiconductor-related stocks. The Nikkei Average rose after the announcement, with Advantest's share price contribution pushing up the index.
On 26 October 2026, U.S. AI company Anthropic published its listing application (S-1) with the SEC, outlining plans to list on the Nasdaq Global Select Market under the ticker ANT. The number of shares and indicative price range remain undecided, while the listing process is thought to be nearing its final stage.
The listing plan includes information on the business, financials, risk factors and other matters, making the information available for anyone to access. The trading start date and expected valuation have not been disclosed at this time.
In the Japanese market, the Nikkei Average rose sharply on 27 October, and Anthropic's listing application was cited as one of the factors behind the rise. Reports also said that Advantest's sharp gain made a significant contribution to pushing up the Nikkei Average.
Investors are focused on the timing of decisions regarding the number of shares offered and the indicative price range, as well as the trading start date. If these details are provided, they will offer more concrete guidance for assessing the range of valuation based on the performance described in the S-1 and determining whether the shares are overvalued or undervalued. There have also been indications that capital flows in the U.S. market could affect Japanese stocks, and attention will be focused on whether buying in Advantest continues.