Anthropic confirmed it confidentially submitted a draft registration statement on Form S-1 with the US Securities and Exchange Commission on June 1, 2026 for a proposed IPO of its common stock. The Dario Amodei-led AI lab joins OpenAI and SpaceX in 2026’s most consequential tech IPO wave.
$965 Billion Implied Valuation
The filing comes after Anthropic’s $65 billion Series H earlier this year, which pegged the company at a $965 billion post-money valuation. Bankers familiar with the process say the IPO range will be calibrated to that mark, though the share count and pricing will not be set until after the SEC review concludes.
Why Anthropic Went First
Anthropic’s filing pre-empts OpenAI by exactly one week. Going first gives Anthropic a chance to anchor investor expectations for AI-model gross margins, capex intensity and customer concentration, with Claude Code, Claude for Enterprise and the company’s ramp on AWS Trainium clusters likely to feature prominently in the S-1’s risk factors.
Joining A $3.6 Trillion Pipeline
With SpaceX raising $75 billion at $1.77 trillion, Anthropic at $965 billion and OpenAI expected between $730 billion and $850 billion, the combined value of the three filings tops $3.6 trillion. That bunches more potential market cap in a single IPO window than the entire 2021 cohort delivered.
What To Watch
Investors will look for clarity on Anthropic’s revenue mix, the share of compute committed to Amazon and Google, and the lab’s exposure to AI safety regulation in the US and EU. Pricing will set the tone for every frontier-model IPO that follows.
Reporting based on coverage from Yahoo Finance, BeInCrypto and the Anthropic press release.