U.S. hits Iran after ship attacks, Polymarket sees 61.5% Hormuz normalcy

Strait of Hormuz Escalation: Polymarket Odds Slide After U.S. Strikes on Iran and Merchant Ship Attacks

The Strait of Hormuz saw renewed military escalation after three merchant ships were hit and the U.S. carried out new strikes on Iran, raising fresh questions about how quickly shipping can stabilize. On Polymarket, odds for the contract “Strait of Hormuz traffic returns to normal by December 31?” fell to 61.5%.

Key Takeaways

• Polymarket prices a 61.5% chance that Strait of Hormuz traffic returns to normal by Dec. 31, 2026 (Yes 61.5%, No 38.5%).
• Odds dropped as new U.S. strikes on Iran followed attacks on three merchant ships in the Strait of Hormuz, keeping reopening and normalization uncertain.
• The market resolves on 2026-12-31, with the Yes contract down 24.0 percentage points from the prior 85.5% reading.

The U.S. military launched new strikes against Iran early Wednesday, hours after three merchant ships were struck in the Strait of Hormuz, in an exchange that threatened an interim deal meant to end fighting between the two countries. U.S. Central Command said the strikes were intended to impose heavy costs for targeting commercial shipping crewed by civilians in an international waterway and called Iran’s actions a violation of the ceasefire. The renewed attacks were described as complicating negotiations aimed at fully reopening the strait, rolling back Tehran’s disputed nuclear program, and reaching a permanent end to a war that began Feb. 28. The report also said the United States revoked a license that had authorized the sale of Iranian oil as part of the interim deal. The U.N. International Maritime Organization was cited as saying the latest assaults were the most in a single day since late April, adding to fears of disruption in a key fuel-shipping corridor.

Market Data: “Traffic Returns to Normal by Dec. 31” Drops to 61.5% on $4.37M Volume (Down 24 Points)

Polymarket’s binary contract implies a 61.5% chance of “Yes” versus 38.5% for “No,” a sharp repricing from the prior 85.5% level. Trading volume stands at $4,372,447, indicating sustained liquidity even as the market moved lower. The 24.0 percentage-point drop suggests traders are demanding more premium for the risk that traffic does not normalize by the Dec. 31, 2026 deadline.

The contract’s next major repricing is likely to track any further disruptions or confirmed normalization signals in Strait of Hormuz commercial transits as the Dec. 31, 2026 resolution date approaches.

Beyond the Strait of Hormuz: Other High-Volume Geopolitical and Macro Polymarket Contracts Bettors Are Tracking

Beyond the year-end horizon, traders are also clustering in nearer-dated and policy-linked contracts that try to map the same risk into tighter timelines and negotiation milestones. On “Strait of Hormuz traffic returns to normal by July 31?”, the “No” side leads at 94.5% on $12,958,772 in volume, while “Strait of Hormuz traffic returns to normal by July 15?” prices “No” at 98.85% with $7,868,018 traded. In parallel, “US-Iran Final Nuclear Deal by…?” implies 42.5% for a December 31 outcome on $7,781,558, and “Iran announces withdrawal from MOU negotiations by…?” has August 15 as the top line at 28.5% with $1,765,324 in volume.

Odds Trend

By the Numbers

• Platform: Polymarket
• Market: Strait of Hormuz traffic returns to normal by December 31?
• Resolution window: Dec 31, 2026 (UTC)
• Status: Active (open for trading)
• Leading implied prob.: 61.5%
• Volume: ~$4,372,447
• Top outcomes: Yes: Yes 61.5% / No 38.5%; No: Yes 61.5% / No 38.5%

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