OpenAI IPO closing market cap above $800B?
85%
Real price history (past month), from Polymarket. Down-sampled to 24 points.
What the market is pricing
The market is heavily favoured, near-certain to resolve Yes, with implied probability at a high level. The odds have remained unchanged over the past day and risen by a small margin over the past week, suggesting steady confidence that an OpenAI IPO will occur with a valuation above the $800 billion mark. This pricing reflects broad expectation of a successful public offering at a substantial valuation.
How this market resolves
This market resolves Yes if OpenAI's closing market capitalization on its first trading day is above $800 billion; it resolves No if no IPO occurs by December 31, 2027, or if the closing market cap is at or below that threshold.
| Implied probability (Yes) | 85% |
|---|---|
| 24h change | +0 pt |
| 7d change | +2 pt |
| Market volume | $103K |
| Resolves by | 2027-12-31 |
| Source | Polymarket ↗ · as of 2026-07-10 |
What could move it
- An IPO announcement or official pricing would directly settle the market once first-day closing data is available.
- Shifts in investor sentiment, market conditions, or company statements about timing could move odds before the end-of-year deadline.
This is an implied probability from a real-money prediction market (Polymarket), shown as information — not a forecast we endorse and not financial or trading advice. Markets can be thin or move fast; always check the source. Odds ≠ advice.
