Anthropic Confidentially Files for IPO After Raising $65 Billion

U.S. Securities and Exchange Commission on Monday for a proposed initial public offering of its common stock. The company, which operates the Claude chatbot and is headquartered in California, did not disclose the size or terms of the offering.

Anthropic announced on Thursday that it had raised $65 billion in a funding round completed in late May. That round valued the company at a $965 billion post-money valuation, more than double the $380 billion valuation it carried after raising $30 billion in February. The valuation more than doubled from $380 billion in February to $965 billion in late May.

Its latest funding round drew backing from Blackstone, Brookfield, D1 Capital Partners, GIC, General Catalyst and Insight Partners. An Anthropic IPO at a valuation near $1 trillion would rank among the largest stock market debuts in years. S.

Equities. S. IPO in the coming weeks, according to a source familiar with the matter. 75 trillion valuation and could begin trading within two weeks of the article date.

"Filing shortly after SpaceX allows Anthropic to capitalize on strong investor interest in AI and growth stocks while the window remains favourable," said Kat Liu, vice president at IPO research firm IPOX. " OpenAI CEO Sam Altman said he is not focused on the timing of a potential initial public offering for the ChatGPT maker and that the company will go public when it makes sense to do so.

Harrison Rolfes, a senior analyst at PitchBook, said the conventional read is that Anthropic seized the narrative advantage by filing first.

5 billion through May 26, the highest year-to-date global total since 2021, according to Dealogic. S. IPOs including Quantinuum, Liftoff and Innio are set to hit the market later this week.

A. Davidson said the companies were racing to go public before capital on Wall Street ran out. "The combined demand for capital from SpaceX, OpenAI and Anthropic will be so considerable that it is likely to create disruptions in the capital markets, so going early will be a great advantage," Luria said.

Anthropic amended its core safety principle amid growing competition in the sector. The company's rapid rise in early 2026 rattled markets, triggering sharp selloffs in software and IT stocks as investors worried its increasingly autonomous AI tools could upend traditional business models and accelerate disruption across industries.