As of Oct 31, 2026, 2:14 AM ET, Polymarket priced this market at 6.7% (little changed over 24 hours). It had $47.8K traded in the past 24 hours, $37K of order-book liquidity and a bid-ask spread of 0.3 pts. probcast.co rates the support behind this price as moderate.
Thin market where small orders can move the price — though most recent trading came from one account.
Source: Polymarket price history
Is the move backed by real trading and depth?
The pricing has partial support: healthy trading volume and market depth, a tight spread.
Has the market settled at the new probability?
The probability has held near its current level over the past several hours.
Will the rules resolve without ambiguity?
The resolution rules are relatively specific, with a named source and a defined deadline.
Two different questions: how hard the price is to move, and whose trading set it.
How hard is it to move this price?
Order-book liquidity
$37K
Bid-ask spread
0.3 pts
24h volume
$47.8K
Total volume
$124.4K
It would take roughly $2.2K of buying to move the price up by ~5 pts.
Little money on the book — a modest order can move this price, so treat swings with care.
Whose opinion is this price?
Accounts
35
Trades
200
over 2 days
Largest order
$1.5K
$2.6K traded across these 200 trades (last 2 days).
One account did most of the recent trading — the price reflects that account's view more than a crowd's.
From the latest trade tape (most recent 200 prints) — a live activity sample, not a lifetime total.
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".
This summary shows the opening of the venue's official rules. ProbCast has not yet generated an independent plain-English interpretation for this contract — review the full rules before relying on it.
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.
The contract must resolve based on what has happened by this date.
Derived from the contract's own mechanics as of Oct 31, 2:16 AM ET. ProbCast does not list scheduled meetings, announcements, or data releases it cannot verify.
Research signals — these models are still accumulating the history needed for full validation, and they can disagree with the headline read. Model confidence: low · expected error ±13 pts.
A tight, deep, quote-driven book with little executed flow. The price is stable but reflects resting quotes more than active trading.
The latest price is a usable but caveated read — weigh it with the market state.
Short-term motion of the price line (~1h), distinct from the environment above — not a prediction of the final outcome.
Secondary read: leaning toward Thin market.
A read-only classification of the market environment — how much weight the current price deserves as a read of consensus. It describes conditions, never a trade.