US-Iran Hormuz Agreement by 2026?

Platform comparison

Market context

The key event is whether Washington and Tehran publish a qualifying diplomatic agreement that specifically commits Iran to permit, restore, or increase shipping through the Strait of Hormuz before the deadline. The market’s 68% crowd-implied Yes price is broadly consistent with a working assumption that talks can still produce a formal text, but it is not a clean endorsement of an imminent deal: Reuters reported on 4 August that the U.S. and Iran were sending conflicting signals, with President Donald Trump saying talks were under way while Iran denied negotiations were happening and said only discussions with Oman were in progress.[3]

Historically, traders should distinguish between framework announcements and qualifying agreements. In June, multiple outlets reported a memorandum of understanding and a 60-day ceasefire linked to reopening the strait, but later reporting showed the arrangement left material issues unresolved and did not amount to a final, durable settlement.[9][10][16][18] That matters for this contract because the wording requires an official instrument with concrete Iranian obligations on traffic through the waterway, not just a pause in hostilities or a general diplomatic statement.[10][18] On that basis, the market price looks higher than a pure binary on “peace progress” would justify, but still recognises that a prior framework already exists in the background.[7][9][12]

The immediate catalysts are official announcements from the White House, Iran’s foreign ministry, or mediators such as Oman and Qatar, plus any published text, signing schedule, or cabinet-level readout that spells out shipping terms.[1][3][8] Reuters said on 4 August that the latest strike on shipping in the strait had increased pressure and that the only talks acknowledged by Iran were with Oman over management of the waterway.[3] For cross-platform comparison, prediction markets are effectively pricing a better-than-even chance of a formal deal, while sportsbook-style lines on a geopolitically fragile, date-specific event would normally need to be substantially more conservative; the gap suggests traders are giving more weight to ongoing mediation than to the public denials and the lack of a published final text.[3][8][13]

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 Best Prediction Markets, which mirrors the Polymarket order book directly.

Resolution & payout

At resolution the UMA oracle takes over: a proposer posts the outcome with a bond, any token holder can dispute within two hours. Without dispute the result is accepted and the smart contract distributes USDC instantly.

On Kalshi (CFTC-regulated) resolution runs through their in-house clearing engine in USD. Betfair Exchange settles after match end in the account's local currency. Manifold pays no cash — only its in-platform "mana" currency.

FAQ

Where can I trade this market with the lowest fees?

Polymarket is geo-blocked in the US/UK/EU. The easiest 0%-fee broker into the same order book is Best Prediction Markets. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

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 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.

How fast are USDC deposits?

Polygon credits deposits after 12 confirmations — usually under 30 seconds. Withdrawals follow the same path and land back in your wallet within minutes.

How reliable are the quoted odds?

The YES/NO percentages are the live mid-prices of the Polymarket order book. On deep markets they move every few seconds; on thinner ones you'll see short plateaus.