Anthropic Prepares IPO Filing as Losses and AI Costs Mount

Anthropic is preparing to publicly disclose its initial public offering prospectus as early as Friday, October 23, according to three people familiar with the company's plans cited by Yahoo Finance on October 21. The artificial intelligence company is targeting a potential November listing that could value it at $2 trillion, despite mounting infrastructure expenses, substantial losses, and growing investor scrutiny of the AI sector.

The planned filing would give public-market investors their first comprehensive look at Anthropic's financial position, business risks, and spending commitments. Reuters previously reported that the company could raise as much as $100 billion, potentially making the offering one of the largest in history and surpassing SpaceX's June IPO.

Anthropic confidentially submitted a draft registration statement to the U.S. Securities and Exchange Commission in June. Under SEC rules, companies using the confidential filing process must make their registration documents public at least 15 calendar days before beginning a formal investor roadshow. The company did not respond to Yahoo Finance's request for comment on the filing timetable.

Financial disclosures described by The Wall Street Journal show that Anthropic generated $16.3 billion in revenue during the first six months of 2026 while recording a net loss of approximately $80.7 billion. The figures were also reported by TechCrunch on October 20 and discussed in Fortune's October 21 coverage of the company's draft registration statement.

Anthropic subsequently told prospective investors that third-quarter revenue reached $16.8 billion, compared with $11.5 billion in the second quarter, according to the Financial Times. The reported figures represent quarterly revenue growth of approximately 46%. The company also reported profitability on an adjusted basis, although its first-half net loss highlights the scale of its financial commitments.

Cloud computing capacity represents a major challenge as Anthropic expands its Claude artificial intelligence models. TechCrunch reported that the draft S-1 filing describes difficulties securing sufficient computing resources from Amazon Web Services, Google, and Microsoft, which increasingly compete with Anthropic in the AI market.

According to TechCrunch's account of the leaked filing, Anthropic believes its cloud contracts could exceed $750 billion, including agreements still under negotiation. The company is also leasing its own data centers and purchasing capacity from third-party operators, but the filing reportedly raises concerns about the reliability of providers with limited operating histories.

Anthropic relies on partnerships with Google and Amazon while also renting graphics processing unit capacity from SpaceX's Colossus 1 data center, according to Yahoo Finance. Its extensive infrastructure requirements reflect the costs of training and operating increasingly capable AI systems.

The draft filing also reportedly warns that Anthropic could face liability for damage caused by harmful AI behavior that exceeds its available insurance coverage. TechCrunch further reported that two customers accounted for approximately one-fifth of the company's first-half sales, highlighting a potential concentration risk.

Anthropic's planned offering comes as investor enthusiasm for large technology listings faces renewed pressure. South Korean data center provider Elice saw its shares fall 32% on its first trading day after raising $151 million, according to Yahoo Finance. Nvidia-backed Firmus Grid also abandoned plans for a public listing earlier in October after investors balked at its proposed valuation, while other companies postponed offerings because of market conditions.

The proposed November timetable remains subject to market conditions and other factors. A public S-1 filing would represent a significant procedural step toward the listing while allowing investors to examine Anthropic's financial performance, infrastructure commitments, and exposure to operational and legal risks.