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.
1T–1.25T
$214.6K Volume
9%
750B–1T
$173.1K Volume
4%
1.5T+
$148.9K Volume
3%
1.25T–1.5T
$524.5K Volume
2%
<500B
$302.5K Volume
1%
500–750B
$165.9K Volume
1%
No IPO by December 31, 2026
$420.8K Volume
82%
Odds & FAQ
What are the current odds for OpenAI IPO Closing Market Cap?
The money is on No IPO by December 31, 2026 at 82%; 1T–1.25T follows at 8%. Live order-book odds, refreshed with every fill.
What do traders predict for OpenAI IPO Closing Market Cap?
The market makes No IPO by December 31, 2026 the favorite at 82%. Implied probabilities come from real positions, and they move as traders digest new information.
When does the OpenAI IPO Closing Market Cap market resolve?
Mark 31 Dec 2026 (163 days left): that's when this market is due to resolve, following Polymarket's published criteria once the result is verified.
How much money is trading on OpenAI IPO Closing Market Cap?
$448 in total volume has traded here. Deeper markets like this tend to price events more sharply.
How can I trade OpenAI IPO Closing Market Cap on Polymarket?
Follow this page for live prices; trading happens on Polymarket itself. Start small - implied odds move, and so can your position's value.
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