Iran's Blockade Ends This Year — But Don't Call It a Victory

The Iranian blockade of the Strait of Hormuz is likely coming to a formal close before 2027. At 83%, the odds on a US announcement ending the blockade by December 31, 2026 are strong enough to treat this not as speculation but as the probable shape of the next eighteen months. The ceasefire architecture is already in place — an effective US-Iran ceasefire now prices at 94%, and the Israel-Iran ceasefire is holding at 100% — which means the political and military preconditions for a US declaration are largely satisfied. What remains is the announcement itself, and the calendar has room.

The pricing tells a more complicated story beneath that top line, however. The blockade's end is likely; the Strait's recovery is not. Hormuz traffic returning to normal by August 31 sits at just 4%, and even by December 31 the odds are roughly even at 48% — meaning the waterway itself is expected to remain impaired long after any formal US declaration. The nearer-term deadlines have shed ground sharply in the past 24 hours: the September 30 contract dropped nearly 17 points, and the August 22 contract sits at 26% after a steep slide. The direction is clear — the resolution, when it comes, is being pushed toward year-end, not pulled forward. The money is saying the announcement arrives, but on Washington's timeline, not the market's most optimistic one.

Why is the 83% figure credible? Because the surrounding architecture supports it. The regime in Tehran is not going anywhere — Iranian leadership change before 2027 prices at just 30%, and Mojtaba Khamenei is favored at 81% to hold power through the end of 2026 — which means any resolution must be negotiated with the current government, not inherited by a successor. A negotiated off-ramp is exactly what a ceasefire-anchored settlement looks like: the US announces a formal end to the blockade, Iran retains the regime, and both sides avoid the escalation ladder. A US invasion remains priced at just 16%, and regime collapse before 2027 at 6%. The path of least resistance runs through a deal, not a rout.

What breaks this? A final nuclear agreement collapsing is the most plausible disruptor. That contract sits at only 24% and dropped over six points in the past day alone — meaning the broader diplomatic settlement remains fragile. If nuclear talks implode entirely, Washington may decline to issue any announcement that could be read as a concession, leaving the blockade in legal and diplomatic limbo past December 31. A domestic political reversal in the US, or a provocation that reignites direct hostilities, could also push the timeline past the year-end deadline. The 17% on the NO side is not noise — it reflects a real scenario in which the politics simply don't close in time.

This argument is the market's, decoded — not investment advice.