US-Iran Hormuz Agreement by 2026?

Platform comparison

Market context

The real-world event is whether Washington and Tehran will announce a formal diplomatic deal on traffic through the Strait of Hormuz before the market closes. The 63% yes price suggests traders are leaning on the existing ceasefire framework and the fact that both sides have already talked about restoring shipping, but the market still needs a qualifying agreement rather than loose statements or a short de-escalation.

Historically, this kind of market should be read with caution: initial memoranda, ceasefires, and technical roadmaps have often been treated by traders as stepping stones, yet they do not always become the final instrument that counts at settlement. Reuters reported in early July that talks in Doha were still focused on the Strait of Hormuz and had not produced clear progress towards a lasting peace, even though partial traffic had resumed[1]. That matters because prediction markets often overprice the chance of a headline-friendly framework while underweighting the risk that implementation stalls, wording is disputed, or the parties keep the arrangement informal rather than signing something that fits the market’s definition[1][4][9].

The near-term catalyst is the negotiation track itself: Reuters said in June that a 60-day follow-on process was underway after an initial framework, while Al Jazeera reported on 2 August that Iran’s foreign minister described talks with Oman over Hormuz as being in their final stages[5][6][17]. Traders should watch for any formal announcement from the US, Iran, Oman or mediators, plus follow-through on sanctions relief and maritime commitments, because those are the dependencies most likely to determine whether the probability moves on substance rather than rhetoric[5][6][17].

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page tracks US-Iran Hormuz Agreement by 2026? across four political prediction venues. Live odds come from the Polymarket order book (the deepest political prediction-market book). Kalshi is the CFTC-regulated US alternative, Betfair the established UK sports-exchange with politics markets, Manifold the open play-money variant. For users geo-blocked from Polymarket directly, brokers like Election Predictions UK provide a 0%-fee route into the same order book.

Resolution & payout

Political markets typically settle on official candidate or agency confirmation. Polymarket uses UMA Optimistic Oracle: a proposer posts the outcome with a bond, the two-hour window opens, then the smart contract pays USDC.

Kalshi settles USD via CFTC clearinghouse, with clearly defined resolution sources (e.g. AP race calls for elections). Betfair settles after the official outcome is registered with the league or agency. Manifold is play-money.

FAQ

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Historically more accurate than polls. Polymarket's Brier score on US 2024 elections was ~0.11 — better than 538 (~0.14) and every mainstream poll. Markets aggregate information with real skin in the game.

What resolution source is used for elections?

Polymarket defines the source per contract — usually Associated Press (AP Race Call), Reuters or the official electoral commission. The source is stated in contract details before the market opens.

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High-liquidity markets move within seconds to minutes. A Trump tweet on the economy can shift the "Trump 2024" market 2-5 points before mainstream media has written anything.

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It varies. They sit in legal gray areas in most jurisdictions. Polymarket is geo-blocked from US/UK/EU; some broker frontends have a different geo footprint. Trade only with capital you can afford to lose, and only if you understand the legal status in your jurisdiction.

Why do Polymarket and Kalshi differ on elections?

Kalshi must follow CFTC compliance — strict definitions, clear resolution sources, US citizens only with KYC. Polymarket operates globally without CFTC oversight — deeper liquidity, but also higher regulatory risk.