Polymarket lifts US-Iran invasion odds to 18.5% after blockade, strikes

Polymarket Reprices “U.S. Invade Iran Earlier than 2027?” After Blockade-and-Strikes Catalyst

Polymarket merchants have pushed the “Will the U.S. invade Iran earlier than 2027?” contract as much as 18.5% Sure (81.5% No) on $41.7M in quantity. The transfer follows recent headlines a couple of renewed U.S. blockade and expanded strikes, giving a learn on how shortly the market reprices tail-risk escalation versus a still-dominant No base case.

Key Takeaways

• Prediction market pricing nonetheless favors No at 81.5%, with Sure at 18.5% on Polymarket.
• Merchants repriced upward after experiences of a reimposed blockade and intensified strikes, lifting Sure from 11.5% to 18.5% (+7.0pp).
• The contract resolves by 2026-12-31, so pricing displays a multi-month escalation window slightly than a near-term headline wager.

A report says the U.S. navy reimposed a blockade on Iranian ports and carried out one other wave of strikes hitting dozens of targets over a number of hours, after Tehran’s assaults on ships transiting the Strait of Hormuz and as an interim deal to finish the warfare unraveled. The report additionally describes Iranian threats to halt Center East power exports and cites Iranian officers on casualties and accidents from strikes.

Market Response: Sure Jumps to 18.5% (from 11.5%) on $41.7M Quantity as No Holds 81.5%

It is a binary Polymarket contract: shopping for Sure pays out if the U.S. “invades Iran” earlier than the 2026-12-31 decision time, whereas No pays in any other case; at the moment’s 18.5% Sure worth is the market’s implied chance of that settlement end result. The repricing is sharp in degree phrases (+7.0pp from 11.5% beforehand), nevertheless it nonetheless leaves a transparent skew towards No at 81.5%, suggesting merchants are treating the catalyst as escalation threat slightly than a base-case shift. Quantity sits at $41.7M, indicating the transfer is being expressed in a comparatively well-trafficked venue slightly than a skinny, one-off print. The historic abstract flags reversal_detected=true with reasonable volatility and a “secure” consensus, in line with a market that may bounce on new data but repeatedly mean-revert towards a decrease Sure baseline (change_24h -2.0, change_7d -2.0) even after spikes.

For pricing follow-through, watch whether or not Sure can maintain above the current 5-point common (avg_last_5 17.9%) or fades again towards the decrease finish implied by the bearish development and destructive 24h/7d modifications; the longer time to 2026-12-31 additionally leaves room for repeated repricings as definitions of “invade” and escalation pathways develop into clearer to merchants.

What Merchants Watch Subsequent on Polymarket: Strait of Hormuz Disruption Odds, Oil Shock Contracts, and 2026 Macro Danger Market

Past the headline invasion contract, merchants are additionally spreading publicity throughout adjoining Polymarket strains that observe the diplomatic and transport aftershocks. “Strait of Hormuz site visitors returns to regular by July 31?” is priced at 98.85% (main end result: No) on $16.79M quantity, whereas “US-Iran Last Nuclear Deal by…?” sits at 29.5% (December 31) on $10.11M. On the method facet, “Iran declares withdrawal from MOU negotiations by…?” leads at 40.0% (August 15) with $5.78M traded, and “US expenses Hormuz charges by…?” is simply 9.5% (December 31) on $705K—helpful for gauging whether or not merchants see escalation translating into coverage and timeline shifts slightly than simply risky headlines.

Odds Pattern

By the Numbers

• Platform: Polymarket
• Market: Will the U.S. invade Iran earlier than 2027?
• Decision window: Dec 31, 2026 (UTC)
• Standing: Lively (open for buying and selling)
• Main implied prob.: 18.5%
• Quantity: ~$41,700,626
• High outcomes: Sure: Sure 18.5% / No 81.5%; No: Sure 18.5% / No 81.5%

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