OpenAI IPO Closing Market Cap
1 live outcome · highest priced: 750B–1T at 7% · first close Jan 1, 2028 · $750.7K total volume
About this event
This event tracks the valuation of OpenAI upon going public, measuring its market capitalization at the close of its first day of trading, provided an IPO takes place by December 31, 2027.
How the outcomes relate
The event is structured as mutually exclusive valuation brackets alongside a scenario where no IPO occurs. Because OpenAI's closing market cap on its first day of trading will fall into exactly one bracket (with tie-breaking rules assigning exact boundary values to the higher bracket), at most one market can resolve Yes.
How it resolves
Each market resolves Yes if OpenAI's market capitalization at the market close on its first day of trading falls within the specified range, calculated as shares outstanding multiplied by the closing share price. If the value lands exactly on the boundary between two brackets, it resolves to the higher range bracket. If no IPO takes place by December 31, 2027, at 11:59 PM ET, the event resolves to 'No IPO by December 31, 2027'. If trading is interrupted, the official closing price of the abbreviated session is used, or the next trading day with an official closing price.
Key dates
- IPO deadline: — Deadline is December 31, 2027, 11:59 PM ET; if no IPO occurs by this time, the market resolves to 'No IPO by December 31, 2027'.
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 |
|---|---|---|---|---|---|
| 750B–1T | 7% | ±0 | Low | High | |
| <500B | — | — | Not rated | — | |
| 500–750B | — | — | Not rated | — | |
| 1T–1.25T | — | — | Low | High | |
| 1.25T–1.5T | — | — | Not rated | — | |
| 1.5T+ | — | — | Not rated | — | |
| No IPO by December 31, 2027 | — | — | Not rated | — |