Hormuz cargo ship sinking leaves Polymarket's normal-traffic odds at just 7% by end-November

Polymarket puts the probability of normal traffic returning to the Strait of Hormuz by the end of November at just 7%, according to scanx.trade, as reports of a cargo ship sinking deepen uncertainty over shipping security. The probability rises to 15% by year-end, suggesting expectations of disruption extending beyond the nearer deadline.

Sinking reports leave key details unresolved

Iran announced on Wednesday that a cargo ship carrying 2,500 containers had sunk after hitting a naval mine, according to scanx.trade. It was the first reported mine-related vessel sinking during the ongoing conflict. The Iranian Revolutionary Guard Corps (IRGC) navy said the ship had taken a dangerous route without authorization; state television showed it listing and producing heavy smoke. Iranian officials offered little information about the crew.

Singapore’s Maritime and Port Authority separately reported that unknown projectiles had hit two Singapore-registered vessels. One sank and the other reached safety; everyone aboard the sunken vessel was evacuated, and neither incident caused reported injuries. The authority condemned the attacks as unjustified violations of international law. Whether the vessel that sank was the same one described by Iran remains unresolved, according to scanx.trade.

The incidents followed an earlier United Kingdom Maritime Trade Operations (UKMTO) report of a container ship hit by an unidentified projectile in the region. UKMTO said more than a dozen strikes had occurred since late September, interfering with tanker movements and oil volumes.

Competing claims over access

Iran has repeatedly demanded approval for vessels crossing the strait, while the U.S. military has directed ships along a route nearer Oman’s coast. Earlier this week, U.S. Central Command (CENTCOM) rejected the IRGC navy commander’s assertion of Iranian control and threat to sink approaching U.S. Navy warships. According to scanx.trade, CENTCOM said American forces and regional partners controlled the waterway and had assisted the passage of more than 19 million barrels of crude oil on Monday.

Sanctions enforcement adds another dimension. Brett Erickson, Managing Principal at Obsidian Risk Advisors, previously warned that attacks could disrupt ship-to-ship transfers used by the “shadow fleet” to evade sanctions. Treasury Secretary Scott Bessent said the U.S. would keep targeting those facilitating Iranian oil sales, with recent sanctions covering 17 vessels transporting Iranian oil and petrochemicals to Asia.

Despite the security incidents, WTI crude fell 1.13% to $94.02 per barrel, while Brent declined 1.54% to $104.43 per barrel, according to scanx.trade. Those price moves contrast with Polymarket’s low probabilities for restored shipping conditions, but do not establish why oil traders marked prices lower.

What it means for prediction markets

• The deadlines matter: The 7% end-November probability and 15% year-end probability both indicate low expectations for normalization, even with additional time.
• Safe passage is not necessarily normal traffic: CENTCOM’s reported movement of more than 19 million barrels on Monday shows continued transit, while the attacks point to unresolved security risks.
• Attribution remains uncertain: Singapore confirmed a sinking, but the report does not establish that it was the same vessel Iran said struck a mine. That distinction matters when assessing evidence of escalation.
• Oil and shipping contracts measure different outcomes: Falling crude prices should not be treated as confirmation that Hormuz traffic is returning to normal.