Anthropic Files for IPO at Nearly $1 Trillion Valuation
Anthropic, the AI lab behind the Claude family of large language models, has confidentially filed a draft registration statement with the U.S. Securities and Exchange Commission for an initial public offering, the company announced on Monday. The move sets the stage for what could become one of the largest technology IPOs in history, with the company valued at approximately $965 billion following its most recent funding round.
Record-Breaking Growth and Market Position
The confidential S-1 filing comes less than a week after Anthropic closed a $65 billion Series H funding round on May 28, 2026, co-led by Altimeter Capital, Dragoneer, Greenoaks, Sequoia Capital, Capital Group, Coatue, and D1 Capital Partners. The round pushed the company's post-money valuation to $965 billion, making it the most valuable private AI company in the world — surpassing OpenAI, which was valued at $852 billion after its $122 billion raise in March 2026.
Anthropic's financial growth has been staggering. The company disclosed that its annualized revenue run-rate has surpassed $47 billion, up from just $9 billion at the end of 2025. This explosive growth has been fueled by enterprise adoption of Claude and anticipation surrounding the company's next-generation model, codenamed Mythos, which was previewed in April 2026.
"This gives us the option to go public after the SEC completes its review. The proposed initial public offering will depend on market conditions and other factors." — Anthropic, via a blog post announcing the filing
A Historic IPO Season Takes Shape
Anthropic's filing is part of a broader wave of blockbuster IPOs reshaping the public markets. SpaceX, led by Elon Musk, filed financial information with regulators in late May, reportedly targeting a $2 trillion valuation. OpenAI is also widely expected to file for its own IPO in the coming months, setting up a direct contest between the two largest AI labs for public investor capital.
Wedbush Securities analysts described the situation as "an opening of the floodgates for the IPO market, which has been relatively dormant for a few years." The analysts noted that "these three major conglomerates are set to go public later this year, but this has turned into a race to reach public markets over the coming months."
The number of shares to be offered and the price range for the Anthropic IPO have not yet been disclosed. The company cautioned that the offering will depend on SEC review completion and favorable market conditions. If Anthropic proceeds, it will file a public S-1 with detailed financials, legal disclosures, and voting power breakdowns.
Source: TechCrunch, NPR, CNBC — June 1, 2026