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US-Iran ceasefire contracts tumble, but ProbCast flags differing signal strength

ProbCast scores the November 8 ceasefire move as likely noise rather than a confirmed repricing, based on the liquidity and trading behind it. The companion contract on a ceasefire continuing through November 15 fell about 58 points in a move ProbCast scores as confirmed.

Two Polymarket contracts tracking the continuation of an effective US-Iran ceasefire recorded sharp declines, but ProbCast assessed the moves differently. Its reporting, published Nov 6, 2026, at 9:30 PM ET, classified the nearer-term move as likely noise and the companion contract’s decline as confirmed.

Sharp declines, different assessments

The contract on an effective ceasefire continuing through November 8 fell about 84 points in six hours, according to ProbCast. Trading totaled 1.1 million dollars over 24 hours.

Despite the scale of that decline, ProbCast did not classify it as a confirmed repricing. Its likely-noise assessment was based on the liquidity and trading behind the move.

The companion contract, covering a ceasefire continuing through November 15, fell about 58 points. ProbCast scored that move as confirmed, distinguishing it from the larger decline in the November 8 contract.

What it means for prediction markets

  • Size alone does not establish signal strength: ProbCast assigned the likely-noise label to the larger, about 84-point move, while classifying the about 58-point decline as confirmed.
  • The trading windows matter: The November 8 price change covered six hours; the 1.1 million dollars in trading covered 24 hours.
  • Market assessments are not ceasefire outcomes: ProbCast’s classifications concern the trading moves, not confirmation of whether the effective ceasefire will continue through either deadline.
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Sources & attribution

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    ProbCast
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