US x Iran Effective Ceasefire by 2026? (2 week pause)

Platform comparison

Market context

The underlying event is a potential 14-day pause in US military strikes against Iran, contingent on Iran reopening the Strait of Hormuz. This specific timeframe mirrors a ceasefire announced by President Donald Trump in April 2026, which suspended aggression for two weeks following mediation by Pakistan [3]. That earlier truce, emerging after 40 days of war, sparked a market relief rally but quickly faced strain as assaults persisted elsewhere in the region [4][8]. Historical precedents like the Twelve-Day War ceasefire also show that initial agreements often suffer immediate violations before holding or collapsing, suggesting that a 5% crowd-implied probability reflects deep scepticism about the durability of any such pause [10].

Traders must monitor announcements regarding the Strait of Hormuz’s status and any scheduled diplomatic visits, as these are the primary dependencies for the ceasefire to initiate. Recent reporting confirms that US strikes resumed in late June 2026 after a tanker was struck in the Hormuz, escalating tensions and breaking previous pauses [1]. The current settlement window extends to August 2026, meaning any future announcement of a 14-day suspension linked to Hormuz access would trigger the market’s resolution condition. Analysts caution that while temporary de-escalation is possible, trust issues and ongoing operations by allies like Israel against Hezbollah undermine lasting peace [4]. Divergence exists between the low prediction-market odds and the historical precedent of Trump’s willingness to suspend attacks, though the recent escalation suggests the political environment is now more volatile than in April.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page is a comparison snapshot: one live quote, four reference venues with their key attributes, and a single execution path — every trade button routes to Kalshi vs Polymarket, which mirrors the Polymarket order book directly.

Resolution & payout

Polymarket-based markets settle through the UMA Optimistic Oracle on Polygon. A proposer submits the outcome, a two-hour challenge window opens, and unchallenged proposals finalise the resolution. Payouts settle automatically in USDC the moment the result is final — no bookmaker, no delay.

Kalshi-based markets settle in USD via the CFTC-regulated clearinghouse. Betfair Exchange settles in GBP/EUR net of commission. Manifold is play-money and does not pay out real funds.

FAQ

Is this market available outside the US?

Polymarket itself is geo-blocked in the US/UK/EU. Always check the legal status of prediction markets in your jurisdiction before trading.

How does resolution work?

Through the UMA Optimistic Oracle on Polygon: a proposer submits the outcome, a two-hour challenge window opens, and USDC payouts settle automatically once the result is final.

What's the difference between YES and NO shares?

A YES share pays $1.00 if the event happens, $0 otherwise. A NO share pays $1.00 if the event doesn't happen. The market price between 0¢ and 100¢ is the implied probability.

What does Polymarket cost to trade?

Polymarket itself charges 0% — the only cost is the Polygon network fee, typically under $0.01 per transaction. Off-chain venues like Kalshi or Betfair charge 2-7% commission.

Do I need to KYC for this market?

On Polymarket directly, no — it's wallet-based. Intermediary brokers like Kalshi vs Polymarket trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.