OpenAI IPO Closing Market Cap
1 live outcome · highest priced: No IPO by December 31, 2026 at 97% · first close Jan 1, 2027 · $2.4M total volume
About this event
This event tracks the market capitalization of OpenAI at the official market close of its initial public offering (IPO) day, measuring whether it falls into specific valuation brackets or if no IPO occurs by the end of 2026.
How the outcomes relate
The event consists of mutually exclusive range brackets alongside an outcome for no IPO occurring by the deadline. At most one market can resolve Yes, corresponding to the final closing valuation bracket or the lack of an IPO.
How it resolves
Markets resolve based on OpenAI's market cap at the closing price on its first trading day, calculated as outstanding shares multiplied by the closing share price. If the value falls exactly between two brackets, it resolves to the higher range. If no IPO takes place by December 31, 2026, at 11:59 PM ET, the 'No IPO' market resolves Yes. In case of trading interruptions, the official closing price of the abbreviated session or the next available trading day's closing price is used.
Key dates
- IPO Deadline: — December 31, 2026, 11:59 PM ET
Resolution source
The primary exchange’s official listing page, or another reliable source if the figure is not displayed.
AI-generated analysis · google/gemini-3.7-flash ·
| Outcome | Price | 24h | Gotcha risk | Tradability | Closes |
|---|---|---|---|---|---|
| No IPO by December 31, 2026 | 97% | ±0 | Low | High | |
| <500B | — | — | Low | Med | |
| 500–750B | — | — | Low | Med | |
| 750B–1T | — | — | Low | Med | |
| 1T–1.25T | — | — | Low | Med | |
| 1.25T–1.5T | — | — | Low | Med | |
| 1.5T+ | — | — | Low | High |