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Updated September 24, 2026 · Category: Economy & Fed · Market end date: January 1, 2027
As of September 24, 2026 at 09:51 UTC, the leading outcome is No IPO by December 31, 2026 at 96.5%, followed by 1.5T+ at 1.1%, <500B at 0.9%. The market has $2.35M in total volume and $3.9K in the last 24 hours.
| Outcome | Probability | 24h change | Volume |
|---|---|---|---|
| No IPO by December 31, 2026 | 96.5% | +0.1 pts | $747.6K |
| 1.5T+ | 1.1% | — | $162.9K |
| <500B | 0.9% | +0.1 pts | $316.9K |
| 1.25T–1.5T | 0.6% | -0.1 pts | $532.9K |
| 750B–1T | 0.4% | -0.1 pts | $186.5K |
| 1T–1.25T | 0.4% | — | $226.5K |
| 500–750B | 0.3% | -0.1 pts | $173.7K |
Total volume $2.35M · 24h volume $3.9K · Liquidity $128.9K. Prices are Polymarket YES-share prices read as probabilities; they are not executable quotes.
■ No IPO by December 31, 2026 ■ 1.5T+ ■ <500B · 30-day price history (12-hour points)
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This market will resolve based on OpenAI's market capitalization at the closing price on its first day of trading.
If no IPO occurs by December 31, 2026, 11:59 PM ET, the market will resolve to "No IPO by December 31, 2026".
Market capitalization expresses the monetary value of a company’s outstanding shares, stated in its pricing currency. It is calculated as the number of shares outstanding multiplied by the closing share price on the first trading day.
If the relevant value falls exactly between two brackets, then this market will resolve to the higher range bracket.
Resolution will be based on the primary exchange’s official listing page. In the event that the relevant figure is not displayed, another reliable source will be used.
In the event of an interruption in the course of the normal trading session on OpenAI’s first day of trading (e.g., a circuit breaker or half-day), the market will resolve according to the official closing price of the abbreviated session. If no such official closing price is published, the market will resolve according to the next trading day on which an official closing price is published, treating that as the first day of trading for purposes of this market.
Summary of the market's published rules. The rules on Polymarket control settlement; check them there before relying on any outcome: open this market on Polymarket.
More odds by topic: IPOs odds · OpenAI odds · Big Tech odds
As of September 24, 2026 at 09:51 UTC, the leading outcome is No IPO by December 31, 2026 at 96.5%, followed by 1.5T+ at 1.1%, <500B at 0.9%. The market has $2.35M in total volume and $3.9K in the last 24 hours.
The event's listed end date is January 1, 2027. Each outcome settles under the market's written rules, summarised on this page, which can differ from the end-date field.
They are the displayed prices of each outcome's YES share on Polymarket. A price of 60¢ implies roughly a 60% chance. This page refreshes the numbers twice a day, so they are not live quotes.
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