Anthropic Confidentially Files Draft Form S-1 With SEC, Preparing IPO
Key Takeaways
- Anthropic confidentially filed for IPO with the SEC via draft Form S-1.
- Share count and offering price have not been disclosed.
- Estimated near $1 trillion valuation by multiple outlets.
Anthropic starts IPO clock
Anthropic, the maker of the Claude chatbot, confidentially filed a draft Form S-1 with the U.S. Securities and Exchange Commission, giving it “the option to go public after the SEC completes its review.”
“Anthropic has confidentially filed a draft Form S-1 with the U”
The filing comes after Anthropic’s valuation reached $965 billion following its latest round of fundraising, and the company said it has not yet determined how many shares it would sell or what price it would seek.

Wedbush Securities analysts wrote that the move “represents an opening of the floodgates for the IPO market,” with three major conglomerates set to go public later this year.
The financial stakes are tied to profitability, with a Wedbush Securities analysis saying the profit margin will be a crucial indicator when Anthropic releases financial details ahead of selling shares.
In the same period, SpaceX disclosed $13 billion in losses since the beginning of 2023, primarily driven by its AI division, xAI, as the IPO race gathers pace.
Market reaction and rivals
Markets tracked the broader AI rally as the Nasdaq Composite and the S&P 500 rose, with the Nasdaq progressing of 0,3% and the S&P 500 of 0,1% while the Dow Jones fell 0,3%.
Zonebourse Suisse reported that Salesforce jumped 10% after information that its participation in Anthropic would be valued at 5 milliards de dollars.
In a note on the filing, Wedbush Securities analysts said the three-company wave would turn into “a race to reach public markets over the coming months,” testing investor appetite for artificial intelligence.
Harrison Rolfes of PitchBook said the key number would be “la marge brute,” arguing it could validate or collapse the narrative private markets have priced in for three years.
Meanwhile, OpenAI is described as preparing to confidentially file for a U.S. initial public offering, with Reuters reporting it is aiming for a speedy IPO and targeting going public as early as September.
What investors and regulators watch
The confidential filing sets up a review by the Securities and Exchange Commission before shares are put up for sale, and it also means Anthropic has not set the number of shares or the share price.
“Anthropic said it confidentially filed its IPO prospectus with the Securities and Exchange Commission, setting up a potentially historic share sale for investors ready to jump into artificial intelligence”
Anthropic’s statement said, “The proposed initial public offering will depend on market conditions and other factors,” and the company said it has not decided on the number or price of shares to be offered.
The Washington Post reported that Anthropic’s profit margin will be the crucial indicator for the health of the wider AI boom when it releases financial details ahead of selling shares.
In parallel, CNBC reported that Anthropic’s revenue run rate ballooned to $47 billion, up from $10 billion in annual revenue last year, as the company prepares for a public-market test of the AI boom.
The same reporting tied the IPO stakes to infrastructure spending and data-center demand, while also noting that SpaceX’s roadshow is expected to launch on June 4 and that Goldman Sachs predicted U.S. IPO proceeds could vault to a record $160 billion in 2026.
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