> ## Content Index
> Fetch the complete content index at: https://www.implicator.ai/llms.txt
> Use this file to discover other available public pages before exploring further.

# Breaking News: Anthropic Confidentially Files for IPO After $965 Billion Valuation
- URL: https://www.implicator.ai/breaking-news-anthropic-confidentially-files-for-ipo-after-965-billion-valuation/
- Published: 2026-06-01T16:32:12.000Z
- Updated: 2026-06-01T16:43:11.000Z
- Description: Anthropic confidentially filed a draft S-1 registration statement with the SEC on Monday for a proposed initial public offering, the AI company behind Claude said. The move comes days after it raised $65 billion at a $965 billion post-money valuation, passing OpenAI as the most valuable AI startup.
- Author: Marcus Schuler
- Tags: ai-news

Anthropic confidentially filed a draft S-1 registration statement with the U.S. Securities and Exchange Commission on Monday for a proposed initial public offering, [the company said](https://www.anthropic.com/news/confidential-draft-s1-sec?ref=implicator.ai). The artificial intelligence company behind the Claude chatbot did not set the number of shares or a price, and said any listing would follow the SEC's review and depend on market conditions. The step comes days after Anthropic [raised $65 billion at a $965 billion post-money valuation](https://www.reuters.com/business/ai-giant-anthropic-confidentially-files-us-ipo-2026-06-01/?ref=implicator.ai), which moved it ahead of OpenAI, Reuters reported. OpenAI's most recent valuation was $730 billion, according to the New York Times.

The submission was made under Rule 135 of the Securities Act of 1933, which lets a company disclose a planned offering without releasing its terms. Anthropic, which is registered as a public benefit corporation, said the announcement was not an offer to sell stock. Its valuation has more than doubled since February, when it [raised $30 billion at a $380 billion valuation](https://www.implicator.ai/anthropic-closes-30-billion-round-doubling-its-valuation-to-380-billion/). Much of the growth has come from tools that automatically write computer code, the New York Times reported.

At close to $1 trillion, Anthropic would enter the top tier of the S&P 500 if it completes the listing. Reuters reported that bankers expect an offering of that scale to drain liquidity and attention from smaller debuts. The filing follows SpaceX's planned $75 billion offering at a $1.75 trillion valuation.

OpenAI is preparing to confidentially file for a U.S. IPO in the coming weeks, a person familiar with the matter told Reuters in late May, a step that would [place Anthropic's figures inside a rival's prospectus](https://www.implicator.ai/openais-ipo-filing-plan-puts-anthropic-into-the-prospectus/). Both companies have pledged a large share of their stock to charity. Anthropic did not set a timeline for the offering, which depends on the completion of the SEC's review.

*More details soon here on implicator.ai.*