OpenAI IPO S-1 Filed: $852 Billion Valuation, $47 Billion Revenue Run Rate, Sam Altman Owns 7 Percent

[SchrodingersCat]

OpenAI filed its S-1 registration statement confidentially with the SEC on June 8, setting the stage for what is expected to be one of the largest technology IPOs in history with a reported target valuation approaching 1 trillion dollars. The company's annualised revenue run rate crossed 47 billion dollars in May 2026, up from roughly 10 billion dollars in annual revenue in 2025. That pace of growth, nearly five times in under 18 months, is extraordinary for a company at this scale. The filing creates a quiet period that constrains marketing communications, which is why GPT-5.6 will likely ship as a technical update rather than a major product announcement.

The S-1 has revealed details about the company's cap table that were previously opaque. Sam Altman owns approximately 7 percent of the company, giving him a stake worth somewhere between 60 and 70 billion dollars at the target valuation. The filing also requires disclosure of material legal risks, meaning the 42-state attorney general investigation, the Florida lawsuit naming Altman personally, and the ongoing government export control negotiations with the Anthropic situation as precedent context all have to appear in the document.

Anthropics concurrent IPO positioning at 965 billion dollars creates an unusual situation where two competing frontier AI labs are simultaneously in SEC registration periods. Anthropic filed confidentially on June 1 and overtook OpenAI's valuation in the process. The two companies going public within months of each other, combined with SpaceX's June 12 Nasdaq debut, means the public markets are about to receive the three most consequential AI-era listings in a very compressed window.

AI giant Anthropic prepares to sell stock to the public; files preliminary IPO paperworkwww.npr.org

[Undertaker00]

Altman's 7 percent stake being worth potentially 70 billion dollars makes him one of the wealthiest people in the world at IPO. That concentration of value on a single individual who has had governance turbulence is going to be scrutinised heavily

[Freya_27]

The quiet period creating a situation where GPT-5.6 releases without marketing is actually interesting. The model has to perform on its own merits rather than a launch event. That is a different kind of credibility test

[ShadowPilot83]

Having both OpenAI and Anthropic in registration periods at the same time while DeepSeek gets permanently cheaper creates a fascinating market structure question. What does public market AI look like at scale

[GlobalOliver15]

The 42-state investigation disclosure requirement is the thing I am watching. The specific language they use to characterise the legal risk in the S-1 will tell you what OpenAI's own lawyers think the exposure actually is

[Ellie_28]

SpaceX debuted at 135 per share and closed at 192. If that kind of momentum carries into the OpenAI listing window the valuation could go much higher than the 852 billion target

[ShadowPilot83]

The Microsoft relationship is the most important disclosure I am waiting for. The compute arrangement, the equity stake, the Copilot revenue sharing. All of that becomes visible in an S-1 and it will reshape how people understand both companies

[Shane88]

But now going to be 2027 not 2026?