Iran agrees to unrestricted shipping through Hormuz by June 30?

Prediction markets put the probability at 18%: Iran agrees to unrestricted shipping through Hormuz by June 30. Currently, markets see this as unlikely (18% YES). Strait of Hormuz transits remain limited as US-Iran ceasefire.

What’s Happening

Commercial vessel traffic through the Strait of Hormuz remained constrained through early June 2026 despite an extended US-Iran ceasefire, with Iran's semi-official Tasnim news agency reporting that only 24 vessels transited the waterway in a 24-hour window after obtaining clearance from the Islamic Revolutionary Guard Corps. The question of whether Iran agrees to unrestricted shipping through Hormuz by June 30 has become central to ongoing negotiations, with President Donald Trump publicly pressing for a broader settlement. Shipowners had grown cautiously optimistic following preliminary US guidance, though the requirement for IRGC permission on a vessel-by-vessel basis falls short of the unrestricted transit regime that existed before hostilities. [World Oil, Jun 2]

The diplomatic picture is complicated by a US Treasury statement dated May 29 affirming that any bilateral arrangement between American operators and Tehran for safe Hormuz passage is prohibited under existing sanctions, even when no toll is paid. "US persons are prohibited from receiving services from the Government of Iran, including services related to a guarantee of safe passage," the Treasury said, effectively barring the kind of operator-level deals that would normalize commercial flow. Shipping executives meeting in Athens on June 1 urged negotiators to produce clear rules, with Yiannis Procopiou, CEO of Centrofin, warning that ambiguity itself is suppressing transit volume. Pakistani Foreign Minister Ishaq Dar met Secretary of State Marco Rubio in Washington the same week to discuss restoring shipping flows. [Fortune, May 30]

Hawks in Washington argue the IRGC's selective permitting amounts to de facto control over the strait and that any deal in which Iran agrees to unrestricted shipping through Hormuz must include verifiable mechanisms, not declaratory commitments. Analysts at ICIS cautioned that prior announcements of comparable agreements have repeatedly failed to translate into operational normalization, noting "it is far from the first time a deal has" been advanced without holding. The structural factor governing resolution before June 30 is whether the Treasury's sanctions posture can be reconciled with an operationally enforceable transit regime, and whether the IRGC will relinquish case-by-case clearance authority. Without both, the technical conditions for Iran agrees to unrestricted shipping through Hormuz cannot be met within the contract window. [Reuters, Jun 1]

Traded on Polymarket — $56K Volume

Lower-volume market on Polymarket ($56K). Wider spreads expected — enter with limit orders and be aware of slippage risk. Currently 18c YES.