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icon for OpenAI IPO closing market cap above ___ ?
Finance·IPOs

OpenAI IPO closing market cap above ___ ?

icon for OpenAI IPO closing market cap above ___ ?
Finance·IPOs

OpenAI IPO closing market cap above ___ ?

Polymarket

$1,519,667 Vol.

Polymarket

$1,519,667 Vol.

$800B

$107,714 Vol.

84%

$1T

$1,046,738 Vol.

76%

$1.2T

$248,687 Vol.

60%

$1.4T

$67,569 Vol.

44%

$1.6T

$48,958 Vol.

42%

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.OpenAI's confidential S-1 filing positions its IPO around a private-market valuation of $852 billion established in the March 2026 funding round, with recent secondary share sales in August 2026 transacting at the same level. Strong revenue expansion from ChatGPT subscriptions and enterprise API usage contrasts with persistent operating losses that exceed $1 per dollar of revenue, implying the eventual public market cap will hinge on demonstrating sustainable growth and a credible path to profitability. Timing has shifted toward 2027 from earlier late-2026 targets, while comparable AI listings and broader equity multiples for high-growth tech will influence opening-day pricing and subsequent trading levels.

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.
Volume
$1,519,667
End Date
Dec 31, 2027
Market Opened
Jan 30, 2026, 7:25 PM ET

Resolver

0x65070BE91...
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.
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.OpenAI's confidential S-1 filing positions its IPO around a private-market valuation of $852 billion established in the March 2026 funding round, with recent secondary share sales in August 2026 transacting at the same level. Strong revenue expansion from ChatGPT subscriptions and enterprise API usage contrasts with persistent operating losses that exceed $1 per dollar of revenue, implying the eventual public market cap will hinge on demonstrating sustainable growth and a credible path to profitability. Timing has shifted toward 2027 from earlier late-2026 targets, while comparable AI listings and broader equity multiples for high-growth tech will influence opening-day pricing and subsequent trading levels.

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.
Volume
$1,519,667
End Date
Dec 31, 2027
Market Opened
Jan 30, 2026, 7:25 PM ET

Resolver

0x65070BE91...
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.

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Frequently Asked Questions

"OpenAI IPO closing market cap above ___ ?" is a prediction market on Polymarket with 5 possible outcomes where traders buy and sell shares based on what they believe will happen. The current leading outcome is "$800B" at 84%, followed by "$1T" at 76%. Prices reflect real-time crowd-sourced probabilities. For example, a share priced at 84¢ implies that the market collectively assigns a 84% chance to that outcome. These odds shift continuously as traders react to new developments and information. Shares in the correct outcome are redeemable for $1 each upon market resolution.

As of today, "OpenAI IPO closing market cap above ___ ?" has generated $1.5 million in total trading volume since the market launched on Jan 30, 2026. This level of trading activity reflects strong engagement from the Polymarket community and helps ensure that the current odds are informed by a deep pool of market participants. You can track live price movements and trade on any outcome directly on this page.

To trade on "OpenAI IPO closing market cap above ___ ?," browse the 5 available outcomes listed on this page. Each outcome displays a current price representing the market's implied probability. To take a position, select the outcome you believe is most likely, choose "Yes" to trade in favor of it or "No" to trade against it, enter your amount, and click "Trade." If your chosen outcome is correct when the market resolves, your "Yes" shares pay out $1 each. If it's incorrect, they pay out $0. You can also sell your shares at any time before resolution if you want to lock in a profit or cut a loss.

The current frontrunner for "OpenAI IPO closing market cap above ___ ?" is "$800B" at 84%, meaning the market assigns a 84% chance to that outcome. The next closest outcome is "$1T" at 76%. These odds update in real-time as traders buy and sell shares, so they reflect the latest collective view of what's most likely to happen. Check back frequently or bookmark this page to follow how the odds shift as new information emerges.

The resolution rules for "OpenAI IPO closing market cap above ___ ?" define exactly what needs to happen for each outcome to be declared a winner — including the official data sources used to determine the result. You can review the complete resolution criteria in the "Rules" section on this page above the comments. We recommend reading the rules carefully before trading, as they specify the precise conditions, edge cases, and sources that govern how this market is settled.