OpenAI IPO closing market cap above $1.2T?

Prediction markets currently give a 52% probability that OpenAI IPO closing market cap above $1.2T?. This contract trades at 52¢ on Polymarket, closing December 31, 2027. The 56¢ price reflects a modest 56% probability for OpenAI exceeding $1.2T at IPO, yet the "No" side offers substantially higher implied yield at 71.5% versus 47.9% for "Yes," suggesting asymmetric risk compensation for the bearish position.

█████████████████████░░░░░░░░░░░░░░░░░░░
52¢
Bid/Ask 51/52¢·Spread 1¢·Vol $0·OI $1,459.423·Closes Dec 31, 2027·618d remaining
0xb968e32c7d9f0bb75361c39f124f7d25c5791a3786e3d915ff773ad95b99eb16
7-day price919 snapshots · 6 regime
65¢52¢ current
Apr 834¢Apr 19

Analysis

6d ago

The 56¢ price reflects a modest 56% probability for OpenAI exceeding $1.2T at IPO, yet the "No" side offers substantially higher implied yield at 71.5% versus 47.9% for "Yes," suggesting asymmetric risk compensation for the bearish position. With extreme realized volatility at 492% and a Vol Ratio of 7.61, this market exhibits significant pricing uncertainty despite 624 days to expiry, while the thin 11¢ spread and modest $335.7K daily volume indicate relatively low liquidity for such a high-stakes outcome. The neutral regime and minimal 7-day price movement (57¢ to 56¢) suggest the market is currently in equilibrium, though the 1.9 info arrivals per hour signal active sentiment shifts around OpenAI developments.

Resolution 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.

Indicators

IY (Yes) 54.5%
IY (No) 64.0%
Adj IY 32%
CRI 1
Overround 1.6%
▶ Full indicator table (5)
IndicatorValue
IY (Yes)54.5%
IY (No)64.0%
Adj IY32%
CRI1
Overround1.6%

Regime

Label
neutral
Score
0.341
Spread
1¢
Computed
4/22/2026, 8:25:07 AM
Observability lowEvent type financial
Indicators computed 4/22/2026, 8:23:24 AM

Trade

View on polymarketsf trade 0xb968e32c7d9f0bb75361c39f124f7d25c5791a3786e3d915ff773ad95b99eb16 yes 100

Related concepts

Related Prediction Market Questions