Tech
Largest IPO by market cap in 2026?
Anthropic54.6%
SpaceX46.0%
OpenAI0.8%
+9 more outcomes
TechAIIPO
OpenAI IPO closing market cap above ___ ?
PROBABILITY HISTORY
Market odds
Top 5 by volume
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OUTCOMES
Current probabilities
Market details
- Resolution status
- Open
- Platform
- Polymarket
- Close date
- Dec 31, 2027 07:00
- Display type
- threshold ladder
- Source rules
- 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 ___ ??
The current leading outcome is $1T at approximately 84.5%. Probabilities can change as the market updates.
When does this prediction market close?
The currently recorded end time is Dec 31, 2027 07:00. Always check the official Polymarket page for the latest market status.
Where can I trade this market?
This website provides prediction-market data and research only. Use the Polymarket button on this page to view the original market.
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