IPO filed
OpenAI stock.
OpenAI is the maker of ChatGPT and the GPT family of models. It confidentially filed a draft S-1 with the SEC on 22 May 2026 and is valued at $852B post-money after closing a $122B round in March 2026, with Amazon, Nvidia, and SoftBank leading the raise alongside long-time backer Microsoft. Bankers have pointed to a late-2026 listing, though reports suggest it may slip into 2027. No IPO date, ticker, or price has been set.
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Key facts.
| Company | OpenAI |
|---|---|
| Product | ChatGPT and the GPT model family |
| Valuation | $852B post-money (Series F, closed March 2026) |
| Total raised | $180B |
| Founders | Sam Altman, Elon Musk (departed 2018), Greg Brockman |
| Key investors | Microsoft, Amazon, Nvidia, SoftBank, Thrive Capital, Tiger Global, Sequoia Capital |
| IPO status | S-1 filed with the SEC |
| Last updated | 2026-07-23 |