Iran full airspace closure by December 31 priced at 30.5% on Polymarket, down 3 points, on $456K traded

Iran closure odds ease

Polymarket’s contract on a full closure of Iran’s airspace by December 31 was priced at 30.5%, with $456K traded, in the supplied October 18, 2026 update published at 10:39 AM ET. The headline reported a decline of 3 probability points.

The summary places the contract at 33% on Oct. 16. That comparison yields a 2.5-percentage-point decline to 30.5%, rather than 3 points. The supplied material does not establish whether rounding or a different comparison window explains the difference.

What the figures establish

According to predictionbubbles.net, its market-movers tracker compares prices over 24 hours and updates every 15 minutes using venue data. The supplied page records a snapshot taken on 18 Oct 2026 at 14:39 UTC and covers Polymarket and Kalshi.

However, the supplied page text does not contain an Iran-specific entry independently confirming the headline’s price, move or trading figure. It also provides no reporting on a geopolitical development behind the decline, or the contract’s detailed settlement criteria.

The available figures therefore show a lower market-implied probability, not evidence that an airspace closure has occurred or that a particular event caused the repricing. The $456K figure supplies trading context, but the Iran-specific material does not identify its measurement period or provide order-book liquidity.

What it means for prediction markets

• Direction is clearer than the precise move: The contract fell from the stated Oct. 16 level, but the reported 3-point decline differs from the 2.5-point change implied by the two prices.
• Volume does not establish depth: The reported $456K traded does not, by itself, show how readily traders could transact at the displayed probability.
• Resolution details remain important: The supplied material does not define what qualifies as a “full” airspace closure or specify the evidence required for settlement.