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Anthropic, the maker of Claude AI, confidentially filed for a U.S. initial public offering on June 1, 2026, after closing a $65 billion Series H funding round at a $965 billion post-money valuation. The AI startup is positioning itself for what could be one of the largest IPOs in market history, eclipsing rival OpenAI in the race to go public.
Quick Facts
- Anthropic raised $65 billion in Series H funding
- Current valuation: $965 billion, the highest for any privately held AI company
- Confidential S-1 filing submitted to the SEC on June 1, 2026
- Expected IPO date: Later in 2026, possibly October
A Record-Breaking Private Valuation
Anthropic’s $965 billion valuation represents more than a doubling of its $380 billion valuation from February 2026, according to reporting from Fortune and Investopedia. The funding round vaults Claude AI ahead of OpenAI, which had a $852 billion valuation as of late March according to Yahoo Finance. The company’s rapid ascent reflects intense investor appetite for large language model technology and AI infrastructure plays.
Path to Public Markets
Anthropic submitted a confidential draft registration statement on Form S-1 with the Securities and Exchange Commission, signaling formal intent to go public, according to multiple sources including Fast Company and Reuters. Reuters reported that Anthropic aims to beat OpenAI to public markets, intensifying a three-way race among the company, OpenAI, and SpaceX to become the next mega-IPO. One source cited an expected listing date of October 22, 2026, though this has not been officially confirmed by the company.
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What’s Ahead for the AI Market
The Claude AI maker’s move to go public underscores the massive scale of capital being deployed to AI development and inference infrastructure. Reuters noted that Anthropic’s IPO could reshape US equity markets and boost the sluggish IPO market. The company’s filing sets the stage for a potential turning point in how generative AI companies fund growth, shifting from private venture capital to public equity markets.
Sources
- Fortune — IPO announcement, $65B funding round, $965B valuation
- TechCrunch — Series H funding details, pre-IPO valuation
- Yahoo Finance — OpenAI’s prior $852B valuation, IPO context
- Reuters — Confidential S-1 filing, OpenAI competition, IPO impact
- Fast Company — SEC filing confirmation, stock listing timeline
- Investopedia — Valuation growth from February to May 2026
