This market will resolve to “Yes” if the official closing price for OpenAI's market capitalization on its first trading day is above the listed value. Otherwise, it will resolve to “No”.
If no IPO occurs by December 31, 2027, 11:59 PM ET, this market will resolve to “No”.
Market capitalization is defined as the total number of outstanding shares multiplied by the closing share price on the first trading day.
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.
Frequently Asked Questions
What are the current odds for OpenAI IPO closing market cap above ___ ??
Current odds: $800B 73%, $1T 67%, $1.2T 50%, $1.4T 47%, $1.8T 39%, $2T 36%. Each price is the market's implied probability for that outcome, and updates continuously as traders buy and sell on Polymarket.
Who is favored in OpenAI IPO closing market cap above ___ ?
$800B is the market favorite at 73%, based on real money wagered by traders who have moved $1.6M through this market. Prediction-market odds have historically tracked outcomes more closely than polls, but they are a forecast, not a guarantee.
How much money is on OpenAI IPO closing market cap above ___ ??
$1.6M has been traded on this market in total, including $469 in the last 24 hours, with $14K of resting liquidity in the order book.
When does OpenAI IPO closing market cap above ___ ? resolve?
This market is scheduled to resolve on January 1, 2028. Winning shares pay out $1.00 each; losing shares expire worthless.
How does OpenAI IPO closing market cap above ___ ? resolve?
This market will resolve to “Yes” if the official closing price for OpenAI's market capitalization on its first trading day is above the listed value. Otherwise, it will resolve to “No”.
If no IPO occurs by December 31, 2027, 11:59 PM ET, this market will resolve to “No”.
Market capitalization is defined as the total number of outstanding shares multiplied by the closing share price on the first trading day.
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.,
Where can I bet on OpenAI IPO closing market cap above ___ ?
This is a Polymarket prediction market — you trade YES/NO shares against other users rather than against a bookmaker. Polynter.net tracks the odds, volume and trader activity; trading itself happens on Polymarket.