US naval forces reinstated the blockade of Iranian ports and the Strait of Hormuz in mid-July 2026 after a brief suspension in June, citing renewed tanker attacks and stalled implementation of the June memorandum of understanding. Ongoing 60-day negotiations cover sanctions relief, nuclear issues, and maritime access, with the US maintaining enforcement pending verifiable Iranian compliance. Trader consensus prices a high likelihood of an official US announcement lifting the measures by December 31, reflecting expectations of diplomatic progress or phased de-escalation, while shorter timelines like October 31 trade closer to even amid risks of further escalation or delays in talks. Scheduled diplomatic contacts and any new incidents in the Gulf could shift probabilities.
Riepilogo sperimentale generato dall'AI con riferimento ai dati di Polymarket. Questo non è un consiglio di trading e non ha alcun ruolo nella risoluzione di questo mercato. · AggiornatoUS Defense Secretary states naval blockade of Iran can continue indefinitely
August 15 drops to 1%11%
On August 14, 2026, US Defense Secretary Pete Hegseth stated that the US Navy can maintain the naval blockade of Iranian ports indefinitely by rotating ships, signaling no imminent end to the blockade. This statement contributed to very low market confidence for blockade termination by mid-August.
US forces fire missiles at commercial vessel attempting to break Iran blockade
September 30 surges to 87%19%
US Central Command reported disabling a Panama-flagged container ship that ignored repeated warnings and attempted to violate the US naval blockade, demonstrating strict enforcement and escalating military tensions.
US maintains naval blockade amid stalled negotiations and renewed Iranian attacks
December 31 dips to 79%3%
By August 10, 2026, the US continued enforcing the naval blockade with increased vessel redirections and interdictions, while Iran hardened its stance demanding the blockade's lifting as a condition for reopening the Strait of Hormuz. This ongoing enforcement and diplomatic stalemate contributed to sustained low market confidence in blockade termination.
US military continues naval blockade with increased vessel redirections
August 15 plunges to 10%18%
The US military redirected more commercial vessels away from Iranian ports under the naval blockade, signaling no easing of maritime pressure and maintaining low market confidence in blockade termination.
US military redirects 20 more commercial vessels under naval blockade as talks stall
The US military continued to redirect commercial vessels away from Iranian ports, signaling no easing of the blockade despite ongoing diplomatic efforts, which kept market confidence low for a near-term blockade end.
Iran demands US meet wide-ranging conditions before reopening Strait of Hormuz
August 31 plunges to 20%55%
On August 8, 2026, a senior Iranian official declared that the Strait of Hormuz would not open until the US lifted its naval blockade and met other demands, signaling a diplomatic stalemate that maintained market uncertainty about blockade termination.
US Navy actively enforces Iran blockade with helicopter support, redirects vessels
August 31 drops to 34%6%
On July 31, 2026, CENTCOM updates confirmed active enforcement of the US naval blockade with helicopter support and redirection of vessels, indicating continued military commitment. This enforcement contributed to market declines in probabilities for the blockade ending by August 31.
US Navy continues enforcement of Iran blockade with helicopter support and vessel redirections
August 31 drops to 34%6%
CENTCOM updates confirmed ongoing active enforcement of the naval blockade, including redirecting vessels, which maintained pressure on Iran and lowered market expectations for blockade termination by August 31.
Reports indicate ongoing diplomatic negotiations but no formal end to blockade yet
October 31 surges to 91%27%
Despite ongoing diplomatic talks between the US and Iran to halt hostilities and resume negotiations, no official announcement ending the naval blockade had been made by late July 2026, maintaining market uncertainty about the blockade's resolution.
Diplomatic talks continue amid uncertainty over permanent end to naval blockade
October 31 jumps to 70%6%
As of late July, the US and Iran engaged in ongoing diplomatic negotiations to halt hostilities and discuss the Strait of Hormuz, but no formal timeline for permanently ending the blockade was established, maintaining market uncertainty about the blockade's future.
Trump cancels planned attack on Iran after agreement outline reached
August 31 rises to 40%4%
President Trump announced the cancellation of a planned military attack on Iran after Iran and regional neighbors requested a hold on strikes, indicating potential diplomatic progress and reducing immediate conflict risks.
US Navy enforces Iran blockade with helicopter support, redirects 30 vessels
August 31 drops to 34%6%
US Navy actively enforced the blockade with helicopter support aboard USS Michael Murphy, redirecting vessels and signaling continued military commitment. This enforcement contributed to market expectations that the blockade would not end by the July 31 deadline, lowering short-term probabilities.
Diplomatic talks continue amid uncertain timeline for blockade resolution
October 31 jumps to 70%6%
Reports indicated ongoing US-Iran negotiations focused on broader peace agreements without a formal timeline for ending the naval blockade, maintaining market uncertainty and influencing moderate price fluctuations.
Diplomatic talks continue with no formal timeline for permanent blockade end
October 31 jumps to 70%6%
Reports indicated ongoing diplomatic negotiations between the US and Iran with no formal timeline established for a permanent end to the blockade. This uncertainty affected market confidence, particularly for the October 31 resolution date, reflecting the complex geopolitical variables involved.
Market prices rise amid hopes for renewed diplomatic talks to end blockade
December 31 surges to 78%15%
Following the reinstatement of the blockade, market prices for the blockade ending rose significantly, reflecting trader optimism about potential diplomatic negotiations to resolve the conflict.
Trump announces 20% toll on cargo passing through Strait of Hormuz amid blockade
December 31 surges to 89%26%
President Trump declared the reinstatement of the naval blockade with a 20% toll on cargo passing through the Strait of Hormuz to cover security costs, signaling a firm stance on blockade enforcement and further reducing market optimism for an early end.
US military launches strikes on Iranian missile sites amid blockade reinstatement
Following the reinstatement of the naval blockade, US Central Command launched multiple air and maritime strikes against Iranian military installations near the Strait of Hormuz, escalating military tensions and reinforcing the blockade's enforcement.
U.S. military launches strikes on Iranian missile sites amid blockade reinstatement
The U.S. conducted multi-wave air and maritime strikes on Iranian military installations near the Strait of Hormuz, coinciding with the formal reinstatement of the naval blockade, marking a significant escalation in the conflict and reinforcing the blockade's enforcement.
US military intercepts and redirects vessels attempting to breach naval blockade
August 31 drops to 34%6%
US forces turned back commercial vessels trying to bypass the reinstated blockade, reinforcing the blockade's enforcement and signaling ongoing hostilities, which influenced market sentiment towards a prolonged blockade.
US Central Command announces enforcement of reinstated blockade from July 14
August 15 plunges to 2%46%
On July 14, 2026, US Central Command announced that military forces would resume blockading traffic to and from Iranian ports and coastal areas, reinforcing the strategic pressure on Iran’s maritime access and signaling a firm US commitment to the blockade.
US Central Command enforces naval blockade on Iranian ports and coastal areas
December 31 rises to 87%2%
The US Central Command officially commenced enforcement of the naval blockade on Iranian ports and coastal areas at 4 p.m. ET, deploying warships and aircraft to secure the Strait of Hormuz. This operational move confirmed the blockade's reinstatement and intensified market concerns about ongoing restrictions on Iranian maritime traffic.
US Central Command enforces reinstated naval blockade on Iranian ports
August 31 surges to 57%23%
Following President Trump's announcement, US Central Command officially reinstated the naval blockade on Iranian ports and shipping, escalating tensions and reinforcing the blockade's enforcement, which impacted market expectations negatively for blockade termination.
US Central Command confirms active enforcement of reinstated naval blockade
August 31 drops to 40%14%
CENTCOM reported active enforcement of the naval blockade with US Navy helicopter support and vessel redirections, demonstrating continued US military commitment and reducing market expectations for an imminent blockade end.
US military resumes naval blockade enforcement in Strait of Hormuz
August 7 jumps to 20%11%
Following President Trump's announcement, US Central Command officially resumed enforcement of the naval blockade on Iranian ports and coastal areas, accompanied by military strikes. This operational restart confirmed the blockade's continuation and influenced market sentiment.
President Trump abandons plan to impose 20% transit fee on Strait of Hormuz shipping
August 7 surges to 35%15%
President Trump reversed his earlier plan to charge a 20% fee on cargo passing through the Strait of Hormuz, opting instead for trade and investment deals with Gulf states. This policy shift reduced some market uncertainty about the blockade's economic impact.
US Central Command announces resumption of naval blockade of Iranian ports and vessels
August 31 jumps to 60%13%
CENTCOM officially announced the resumption of the naval blockade against vessels transiting to and from Iranian ports, with over 20 US Navy warships and hundreds of aircraft operating in the region, reinforcing the blockade's enforcement.
US Central Command begins enforcement of reinstated naval blockade on Iranian ports
August 31 jumps to 65%5%
Following President Trump's announcement, US Central Command officially began enforcing the naval blockade on Iranian ports and shipping, redirecting vessels and boarding ships to ensure compliance, signaling sustained military pressure on Iran.
US Central Command resumes enforcement of naval blockade on Iranian ports
CENTCOM announced the resumption of the naval blockade enforcement on Iranian ports and coastal areas, following President Trump's directive, reinforcing the US military presence and control over maritime traffic to and from Iran.
US Central Command announces reimplementation of naval blockade on Iran
Following President Trump's announcement, US Central Command stated on July 14, 2026, that the naval blockade of Iranian ports and ships was reinstated, signaling a return to active enforcement and escalating tensions. This reinforced market expectations of continued blockade enforcement.
U.S. Central Command resumes enforcement of naval blockade on Iranian ports
Following President Trump's announcement, CENTCOM confirmed the resumption of the naval blockade enforcement against vessels traveling to and from Iranian ports, reinforcing U.S. control over maritime traffic and escalating military pressure on Iran.
US military launches strikes on Iranian missile sites coinciding with blockade reinstatement
August 31 jumps to 44%6%
Following the blockade reinstatement announcement, US forces conducted air and maritime strikes on Iranian military installations near the Strait of Hormuz, intensifying conflict and reinforcing the blockade's enforcement, further impacting market sentiment negatively.
US Central Command begins enforcement of reinstated naval blockade
On July 14, 2026, US Central Command officially commenced enforcement of the naval blockade on Iranian ports and coastal areas, confirming the operational restart of the blockade and intensifying market concerns about ongoing restrictions on Iranian maritime traffic.
President Trump announces immediate reinstatement of US naval blockade on Iran
August 7 surges to 42%18%
Following renewed Iranian attacks and fractured ceasefire, President Trump declared the immediate reinstatement of the US naval blockade targeting Iranian ships and customers, signaling a return to heightened tensions and ending the ceasefire. This announcement caused a significant market shift reflecting the blockade's reimposition.
U.S. reinstates naval blockade on Iran amid renewed hostilities
December 31 plunges to 63%15%
Following a breakdown in the ceasefire and renewed Iranian attacks, the U.S. reimposed its naval blockade on Iranian ports and shipping, marking an end to the prior ceasefire and causing market uncertainty and price declines.
President Trump announces reinstatement of US naval blockade on Iran
August 7 jumps to 38%14%
President Trump publicly announced the reinstatement of the US naval blockade on Iranian ports and ships, ending the ceasefire and escalating tensions. This clear and official declaration directly impacted market prices, reflecting increased conflict risk.
US military launches strikes on Iranian missile sites coinciding with blockade reinstatement
August 31 jumps to 60%13%
The US Central Command launched multiple air and maritime strikes on Iranian military installations near the Strait of Hormuz, coinciding with the formal reinstatement of the naval blockade, intensifying military conflict in the region.
Trump announces reinstatement of US naval blockade on Iran with 20% toll on cargo
President Trump announced the reinstatement of the US naval blockade on Iranian ports and ships, imposing a 20% toll on cargo passing through the Strait of Hormuz, following renewed Iranian attacks on shipping and the collapse of the ceasefire agreement.
Trump announces reinstatement of US naval blockade on Iran amid renewed hostilities
August 7 dips to 22%2%
On July 13, 2026, President Trump announced the immediate reinstatement of the US naval blockade of Iran following a breakdown in the ceasefire and renewed Iranian attacks. This announcement caused a drop in market confidence for near-term blockade end dates.
President Trump announces immediate reinstatement of US naval blockade on Iran
Following renewed Iranian attacks and fractured ceasefire, President Trump declared the immediate reinstatement of the naval blockade targeting Iranian ships and customers, marking the end of the ceasefire and causing a sharp market reaction reflecting increased conflict risk.
US Central Command confirms naval blockade enforcement to begin July 14
October 31 surges to 79%15%
The US Navy-led Joint Maritime Information Center announced the blockade enforcement on Iranian ports and coastal areas would begin at 20:00 GMT on July 14, reinforcing the official start of the blockade and impacting market expectations.
Trump abandons plan to charge 20% toll for Strait of Hormuz passage
August 31 jumps to 57%10%
Following negotiations with Persian Gulf leaders, President Trump announced he would not impose the previously threatened 20% fee on ships passing through the Strait of Hormuz, but maintained the naval blockade on Iranian vessels, affecting market sentiment.
US military launches strikes on Iranian missile sites coinciding with blockade reinstatement
Following President Trump's announcement on July 13, 2026, the US military conducted strikes on Iranian missile and naval facilities, escalating the conflict and reinforcing the blockade's enforcement. This military action further influenced market expectations about the blockade's continuation.
Trump announces reinstatement of U.S. naval blockade on Iran and imposes 20% toll on cargo
August 13 surges to 52%24%
Following renewed attacks in the Strait of Hormuz and the collapse of the ceasefire, President Trump declared the reimposition of the naval blockade targeting Iranian ships and customers, escalating tensions and causing a sharp market reaction.
Trump announces reinstatement of US naval blockade on Iran
August 15 plunges to 28%20%
Following renewed Iranian attacks and the collapse of the ceasefire, President Trump declared the immediate reinstatement of the naval blockade targeting Iranian-flagged and customer ships, imposing passage fees and positioning the US as guardian of the Strait of Hormuz. This announcement caused a sharp drop in market confidence regarding the blockade's end.
Trump announces immediate reinstatement of US naval blockade on Iran
August 13 surges to 48%20%
Following renewed Iranian attacks and failed diplomatic talks, President Trump declared the immediate reinstatement of the naval blockade targeting Iranian ships and customers, causing market uncertainty and a drop in confidence for the blockade ending soon.
Trump notifies Congress of renewed military action and blockade enforcement
December 31 surges to 85%22%
President Trump formally notified Congress that US military action against Iran had resumed on July 7, including defensive strikes and the reinstatement of the naval blockade. This official communication underscored the US government's present and decided position on the blockade, reinforcing market expectations of its continuation.
US-Iran ceasefire ends with increased strikes and blockade reinstatement
December 31 plunges to 63%22%
The Institute for the Study of War reported that the US-Iran ceasefire effectively ended with increased military strikes and the US reimposing its naval blockade, marking a significant escalation and impacting market sentiment negatively regarding blockade termination.
US announces reinstatement of naval blockade on Iranian ports and shipping
Following the collapse of the ceasefire and renewed hostilities, US Central Command announced the reinstatement of the naval blockade on Iranian ports and ships, causing a sharp decline in market confidence regarding the blockade's end.
Trump announces reinstatement of U.S. naval blockade on Iran and imposes tolls
December 31 surges to 89%25%
President Trump publicly declared the reinstatement of the naval blockade targeting Iranian ships and customers, alongside military strikes on Iranian facilities, escalating tensions and signaling a return to active enforcement of the blockade. He also announced a 20% toll on cargo passing through the Strait of Hormuz to cover security costs.
President Trump announces reinstatement of US naval blockade on Iran
August 13 surges to 48%20%
On July 13, 2026, President Donald Trump publicly announced the immediate reinstatement of the US naval blockade on Iranian ports and ships, ending the ceasefire and peace agreement reached in June. This announcement escalated tensions and caused a significant market reaction reflecting renewed conflict.
US launches military strikes on Iranian missile sites coinciding with blockade reinstatement
August 31 surges to 60%36%
Following the announcement of the blockade reinstatement on July 13, 2026, the US Central Command launched multiple air and maritime strikes on Iranian military installations near the Strait of Hormuz, intensifying military conflict and reinforcing the blockade's enforcement.
President Trump announces reinstatement of US naval blockade on Iran
August 22 plunges to 6%49%
President Trump publicly declared the reinstatement of the US naval blockade targeting Iranian ships and customers, ending the ceasefire and escalating tensions. This announcement caused a sharp drop in market confidence for near-term blockade end dates.
President Trump announces reinstatement of US naval blockade on Iran
December 31 surges to 79%16%
On July 13, 2026, President Trump publicly announced the reinstatement of the US naval blockade on Iranian ports and ships, ending the ceasefire and escalating tensions, which caused a sharp drop in market confidence for near-term blockade end dates.
Trump announces reinstatement of US naval blockade on Iran
August 31 drops to 34%13%
President Trump announced the immediate reinstatement of the US naval blockade on Iranian ships and customers following a breakdown in the ceasefire and renewed Iranian attacks, sharply reducing market confidence in a near-term end to the blockade.
Trump announces reinstatement of US naval blockade on Iran
August 22 plunges to 6%49%
President Trump announced the immediate reinstatement of the US naval blockade of Iran following a breakdown in the ceasefire and renewed Iranian attacks, reversing the earlier lifting and escalating tensions. This caused a sharp drop in market confidence for near-term blockade end dates.
President Trump announces reinstatement of US naval blockade on Iran
August 31 plunges to 38%22%
President Trump publicly announced the immediate reinstatement of the US naval blockade on Iranian ships and ports amid renewed hostilities, causing a sharp drop in market confidence for near-term blockade end dates and escalating tensions.




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