TOTAL VOLUME:

$26.9b

24H VOL:

$53,643,865

24H TRANSACTIONS:

1,362,287,844

OPEN INTEREST:

$1,063,853,505

56,734

Markets across

1,194

events

MATCHED EVENTS:

96

PLATFORM COVERAGE:

4

Polymarket:

53%

VS.

Kalshi:

47%

BETA
Dashboards
Insights
Tour
All
Financials
OpenAI IPO closing market cap above ___ ?
polymarket

OpenAI IPO closing market cap above ___ ?

Jan 30, 2026, 7:27 PM EST - Dec 30, 2027, 7:00 PM EST
Total volume:
$1,521,573
Volume 24h:
$500
4,901%
Liquidity:
$27,296
3%
Open interest:
$16,410N/A

$800B

 - Polymarket

$800B - Polymarket

1W

News

Positive

Negative

Neutral

Hover marker for details

Vol.

·

Resolves Dec 31, 2027

OpenAI IPO closing market cap above $800B?

83%chance
Amount

$

Trade on
polymarket

Trade on Polymarket

At 83¢ buys you 120 shares | Odds: 83% Total Payout: $120 | Net Profit: $20 Multiplier: 1.20x | ROI: 20% | APY: 15% 490 days to resolution
You will be redirected to the platform to complete this trade.
Outcome
Trade
Chance %
Price
Spread
Liquidity
Volume
24h
7d
Open Interest
Ends in
Result
polymarket

$800B

Trade
83%
Yes 83¢No 18¢
$9,606
$107,749
0%
0.03%
N/A
1y 4mo
active
polymarket

$1T

76%
Yes 76¢No 25¢
$7,514
$1,046,743
0%
0%
N/A
1y 4mo
active
polymarket

$1.2T

64%
1%
Yes 66¢No 39¢
$4,573
$248,726
0.01%
0.02%
N/A
1y 4mo
active
polymarket

$1.4T

63%
10%
Yes 65¢No 39¢
$1,914
$68,753
0.29%
2%
N/A
1y 4mo
active
polymarket

$1.6T

41%
2%
Yes 42¢No 61¢
$3,690
$49,603
0.57%
1%
N/A
1y 4mo
active
Total markets: 5

Description

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.

Polymarket

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.