PolymarketGeopoliticsDevelopingUpdated 14m ago

Will the U.S. invade Iran before 2027?

As of Oct 22, 2026, 4:52 AM ET, Polymarket priced this market at 15.5% (little changed over 24 hours). It had $165.1K traded in the past 24 hours, $323.2K of order-book liquidity and a bid-ask spread of 1.0 pts. probcast.co rates the support behind this price as strong.

Market probability
15.5%
Little changed over 24 hours

Deep, easy-to-trade market, with broad trading across many accounts.

Price historyPolymarket

Source: Polymarket price history

How credible was the move?

Methodology →

Move validity

Strong

Consensus stability

Stable

Contract clarity

High

Can you trust this price?

Two different questions: how hard the price is to move, and whose trading set it.

Market capacity

How hard is it to move this price?

DeepTight spread

Order-book liquidity

$323.2K

Bid-ask spread

1.0 pts

24h volume

$165.1K

Total volume

$75M

It would take roughly $29.3K of buying to move the price up by ~5 pts.

Lots of money on the book and a tight spread — a single ordinary order can't move this price much.

Who's trading

Whose opinion is this price?

Broad participation
23%of the traded money came from the single largest account

Accounts

101

Trades

200

over 26h

Largest order

$6.6K

$28.9K traded across these 200 trades (last 26h).

Many independent accounts traded — the price reflects a crowd, not one trader.

Recent trade activity$28.9K traded

From the latest trade tape (most recent 200 prints) — a live activity sample, not a lifetime total.

What this market actually measures

This market will resolve to "Yes" if the United States commences a military offensive intended to establish control over any portion of Iran by December 31, 2026, 11:59 PM ET. Otherwise, this market will resolve to "No".

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.

View full official resolution rules

This market will resolve to "Yes" if the United States commences a military offensive intended to establish control over any portion of Iran by December 31, 2026, 11:59 PM ET. Otherwise, this market will resolve to "No". For the purposes of this market, land de facto controlled by Iran or the United States as of November 4, 2025 12:00 PM ET, will be considered the sovereign territory of that country. The resolution source for this market will be a consensus of credible sources.

What could move this market next?

  • The market's deadline arrivesDecember 31, 2026 at 11:59 PM ET

    The contract must resolve based on what has happened by this date.

Derived from the contract's own mechanics as of Oct 22, 5:07 AM ET. ProbCast does not list scheduled meetings, announcements, or data releases it cannot verify.

Advanced analysis (experimental)

Research signals — these models are still accumulating the history needed for full validation, and they can disagree with the headline read. Model confidence: high · expected error ±11 pts.

Quote-drivenLegacy movement classifier: watch

What's happening

high classifier confidence
Quote-driven

A tight, deep, quote-driven book with little executed flow. The price is stable but reflects resting quotes more than active trading.

  • Tight spread on a liquid, calm market

The latest price is a usable but caveated read — weigh it with the market state.

More details — reliability score, dynamics, durability
Reliability score
46Medium
Where the price path tends to go next354 observed
  • Stable consensus95%
  • Choppy / mean-reverting3%

Short-term motion of the price line (~1h), distinct from the environment above — not a prediction of the final outcome.

DurabilityHigh· half-life ~19h
PredictabilityElevated irreducibility

Secondary read: leaning toward Trading normally.

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.

Change (pts)1H0.06H-1.024H0.07D0.0

Cross-venue check

0.5 pts apart
Match: exact title

Manifold prices this same question at 15% vs Polymarket at 16%. The venues broadly agree, which adds confidence to the price.

Compare on Manifold →

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