US x Iran ceasefire continues through October 31: the evidence and conditions to watch

What this event actually asks

The useful question is precise: US x Iran ceasefire continues through October 31? In the API observation at 09:57 UTC on 2026-10-04, the selected contract’s first listed outcome was priced at 64.5%. The parent event had recorded $5,876,766 in cumulative volume. This is turnover across the event, not a count of independent forecasters or proof that this outcome is correctly priced. ^[1][2]

This market will resolve to “No” if the United States takes a qualifying military action against Iran by the selected deadline, 11:59 PM Iran Standard Time. Otherwise this market will resolve to “Yes.” ^[2]

A promise to stop fighting is only one stage

The ICRC distinguishes an end to active fighting from a stable end to an armed conflict. It notes that a peace treaty does not automatically establish that military operations have actually ended. ^[3]

Negotiators may agree on a statement before commanders can enforce it everywhere. Monitoring, the treatment of alleged violations and the sequence of withdrawals can therefore matter as much as the announcement. This is an interpretation of implementation risk, not a claim that any party has secretly decided to break an agreement.

Which evidence would change the assessment?

Matching public commitments from the required parties, followed by the specific agreement or uninterrupted implementation test in the rules, would support the positive outcome.

A unilateral announcement, a limited humanitarian pause, or an unverified assertion of compliance may fall short. Conversely, an isolated violation is not automatically cancellation unless the rules define it that way.

Interception and surface-to-air engagements have separate exclusions in the full rules. ^[2]

The next useful checkpoint

Written-rule date: October 31; 11:59 PM (Iran Standard Time). The selected contract and any reporting grace period govern settlement. ^[2]

Our reading is conditional: compare the next primary record with the exact threshold above, then revisit the case if the evidence contradicts it. A high quoted chance does not establish certainty; a low quote does not make the event impossible. The value of the article is a clearer test of the claim, not an asserted trading advantage.