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Will OpenAI’s market cap be less than $500B at market close on IPO day by December 31, 2027?

Yes 2.5%

Vol$42.9K

SnapshotOct 16, 2026, 12:00 AM UTC

Yes 2.5%

TradeTrade on Polymarket

Event

MarketPOLYMARKETactive

MarketPOLYMARKETactiveFinance

Will OpenAI’s market cap be less than $500B at market close on IPO day by December 31, 2027?

Part of: OpenAI IPO Closing Market Cap

YesYes Price

2.5¢

VolTotal Volume

$42.9K

Outcomes

Ends

Jan 1, 2028, 4:59 AM UTC

Trade on Polymarket

Will OpenAI’s market cap be less than $500B at market close on IPO day by December 31, 2027?

Yes

2.5¢

Vol

$42.9K

Outcomes

Trade

Yes2.5¢

No97.5¢

Outcome

Yes quoted price: 2.5%. Snapshot Oct 16, 2026, 12:00 AM UTC. History may have a different observation time.

Price History

Will OpenAI’s market cap be less than $500B at market close on IPO day by December 31, 2027? · Yes

No historical data available

Price history will appear here when available

Rules and settlement

Listed close: Jan 1, 2028, 4:59 AM UTC. Settlement follows the provider's contract terms and may occur later.

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, 2027, 11:59 PM ET, the market will resolve to "No IPO by December 31, 2027". 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.

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Resolution Info