OpenAI IPO Closing Market Cap

OpenAI IPO Closing Market Cap

$523K volume·до Jan 1, 2028
OUTCOMESPROBABILITY · PRICE
<500B$43K volume0123456789%
PriceSharesTotal
500–750B$30K volume0123456789%+1 pp
750B–1T$72K volume0123456789%
1T–1.25T$86K volume0123456789%+1 pp
1.25T–1.5T$62K volume01234567890123456789%+1 pp
1.5T+$136K volume01234567890123456789%
No IPO by December 31, 2027$94K volume01234567890123456789%

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.

✓Market open for trading
Proposed outcome
Final review
Questions and answers

“OpenAI IPO Closing Market Cap” is a prediction market on Melbo. A share’s price reflects the probability of the outcome: on the correct outcome each share settles at $1, on the wrong one at $0.