Anthropic, the operator of the Claude chatbot, is running at a $65 billion annualized revenue pace, roughly seven times the rate recorded at the end of 2025, and has filed confidentially for a U.S. listing that could value the company at $2 trillion or more. The filing turns a private-market phenomenon into a public-market question: how much of that valuation is already embedded in the shares of its backers.
The backers and their stakes
Amazon holds a 21 percent stake built through a $33 billion commitment. Alphabet owns 15 percent but has signaled it will not add more, citing direct competition between its Gemini models and Anthropic's Claude. Salesforce has committed $5 billion. Zoom Communications holds a $1.3 billion position. Because those stakes sit on the balance sheets of public companies, their shareholders effectively own a slice of Anthropic's pre-IPO equity, a slice that gets remeasured each time the startup raises a new round.
The SpaceX precedent
The mechanism is not theoretical. In the second quarter of 2026, Alphabet reported earnings per share of $9.11, more than triple consensus, after booking $98 billion in unrealized gains tied to its Space Exploration Technologies stake when that company listed. Amazon recorded $53.4 billion of income from the revaluation of its Anthropic holding during the same quarter, a move that coincided with a sharp rally in its shares. Pre-IPO investments are marked to market at every fresh capital raise; a blockbuster Anthropic debut would trigger another step-up.
The skepticism priced in
The market has not rewarded the AI spending binge. Amazon and Alphabet shares have treaded water in 2026 after a 2025 surge, as investors question whether the billions plowed into data centers and chips will generate adequate returns. Salesforce is down 22 percent year to date, pressured by the narrative that generative AI could make its core software stack expendable. Zoom's modest stake is too small to move its needle.
What to watch
The SEC filing starts a clock. If the IPO prices near the $2 trillion figure circulating in private markets, the revaluation gains at Amazon and Alphabet would be material, large enough to distort quarterly earnings and potentially revive the AI-infrastructure trade. If the offering stalls or prices lower, the unrealized gains reverse and the "hidden exposure" argument unravels. The next capital raise before the listing, or the S-1 itself, will provide the first hard numbers since the $65 billion run-rate disclosure.