Anthropic plans to IPO in mid-November, with the listing window narrowing amid an AI sector pullback

AI unicorn Anthropic is standing at the historic threshold of going public, but market headwinds are intensifying uncertainty.

According to Reuters, Anthropic, the developer of the Claude chatbot, plans to complete its IPO in mid-November, with a target valuation as high as $2 trillion, which could surpass SpaceX's $1.77 trillion listing earlier this year and make it one of the largest tech IPOs in history. However, the U.S. Securities and Exchange Commission (SEC) requires companies to publicly file their prospectus at least 15 days before launching the roadshow, which means the window Anthropic has left for itself is rapidly narrowing.

Meanwhile, the AI sector has recently suffered a notable sell-off — CoreWeave's stock plunged about 30% in two weeks, and Micron fell 17% over the past month — as doubts about the sustainability of AI spending continue to heat up. Several market participants said Anthropic may face pressure to delay its listing, but some analysts noted that the company's urgent need for capital may push it to stick to its original plan. Prediction markets currently show about an 80% probability that Anthropic will go public this year.

Time window: file the S-1 no later than next week

Under SEC rules, a company must publicly file its prospectus (S-1 filing) at least 15 days before the roadshow begins. Jay Ritterh, who heads the IPO research program at the University of Florida, said that if Anthropic wants to complete its listing before Thanksgiving, there is still ample time, but it is already quite tight.

Specifically, if the company sets its IPO for no later than November 24 and launches the roadshow on November 16, it must publicly file the S-1 before the end of next weekend.

It is worth noting that Anthropic had previously been expected to publicly disclose its prospectus shortly after Labor Day, when the market expected it might list in late September, but that plan did not proceed as scheduled.

According to MarketWatch, the recent sharp pullback in AI-related stocks is an important variable that Anthropic's management has to face.

Emerging cloud computing company CoreWeave fell about 30% over the past two weeks on market concerns about its debt management capabilities; memory chip giant Micron fell 17% over the past month, reflecting broad market worries about the scale of AI spending and financing prospects.

Joe Tigay, portfolio manager at Rational Equity Armor Fund, said persistent inflationary pressure and high energy prices are also concerning.

"Historically, the combination of slowing growth and inflation is often a precursor to cracks in the stock market. If these pressures continue to build, Anthropic has every reason to choose to remain private and wait for a better time."

However, some voices argue that Anthropic's listing is crucial to boosting market confidence.

Jim Lebenthal, chief market strategist at Cerity Partners, noted that the long-term vitality and business model of the AI industry have recently come under more scrutiny, and the market needs a successful Anthropic IPO to prove that AI has the capacity for sustained development.

"It is reasonable to ask questions, and even reasonable to be skeptical," Lebenthal said. "But the health of the overall stock market and the health of the U.S. economy depend to a large extent on the success of the artificial intelligence industry."

Capital needs: going public is the most realistic path to obtaining funds

Setting aside market sentiment, Anthropic's own urgent need for capital may be the core driver pushing it to stick to its listing plan.

Andrew Rocco, equity strategist at Zacks Investment Research, said the largest AI companies have shown that "they are basically willing to invest on a massive scale to the best of their ability in order to win more users and try to become the dominant AI player."

He believes Anthropic will work hard to push forward its listing, "because they really need that money, especially when financing in the private market may become more difficult."

A Wall Street See article wrote that, according to The Wall Street Journal citing Anthropic's draft prospectus, the company's spending on AI computing power over the next several years could be as high as $750 billion. At the same time, the prospectus shows that Anthropic recorded a net loss of more than $80 billion in the first half of 2026, with revenue of $16.3 billion, though the loss was mainly driven by accounting adjustments rather than deterioration at the underlying business level.

Prediction market data shows about an 80% probability that Anthropic will complete its listing within the year. Risk disclosure and disclaimer

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