Iran commits not to attack ships in Hormuz by Sunday?

Platform comparison

Market context

The United States is actively demanding that Iran issue a public, official statement guaranteeing the Strait of Hormuz remains open and that no ships will be targeted, a condition Washington views as essential for ongoing negotiations in Oman [1][9]. Despite these diplomatic pressures, the 2% crowd-implied probability reflects Iran’s entrenched refusal to relinquish administrative control over the waterway, with officials recently stating reopening is impossible if a US blockade persists [2].

Historical precedents show Iran consistently treats the strait as a strategic lever rather than a neutral corridor, having previously declared it closed during past escalations to punish perceived breaches of ceasefire by adversaries [6]. In comparable instances, Tehran has permitted passage only for non-hostile vessels while explicitly barring US and Israeli-linked ships, framing any total commitment not to attack as a surrender of sovereignty rather than a policy shift [3]. This pattern suggests a declarative, unconditional pledge is unlikely before the settlement deadline.

Traders should monitor the negotiations led by Vice President JD Vance in Oman, where the US insists on a public pledge as a sticking point for further talks [4]. The market leans heavily on the outcome of these talks, yet recent Iranian rhetoric from lawmakers indicates they will never relinquish authority over the strait, making a qualifying announcement improbable [2]. Any shift would likely require a broader ceasefire agreement with Israel, which remains unsecured as hostilities in Lebanon continue to influence Tehran’s stance [6].

Sources: 1 · 2 · 3 · 4 · 5

Methodology

Political prediction markets differ structurally from sports betting: thinner liquidity, longer settlement windows, higher sensitivity to single news events. This page shows the live Polymarket quote for Iran commits not to attack ships in Hormuz by Sunday? plus platform attributes for the three reference venues, so you can see at a glance where the deepest market for this question sits.

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

How accurate are political prediction markets?

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.

Which platform has the deepest political liquidity?

Polymarket — by far. US 2024 presidential volume was ~$3.5B vs Kalshi (~$200M) and Betfair (~$120M). Where Polymarket is geo-blocked, brokers like Election Predictions UK route into the same order book at 0% fees.

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.

Which political events have the biggest volume?

US Presidential election, party nominations (DNC/RNC), Senate majorities, individual state outcomes (Pennsylvania, Michigan, Wisconsin), and major European elections. Peak markets reach $50-500M per event.