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Iran Conflict 2026
18JUL

Brent slips to $94.71 the day Hormuz is declared shut

4 min read
13:17UTC

Brent eased about 1.7 per cent to $94.71 on 11 June, with WTI near $91.84, pulling back from the prior day's peak even as the IRGC declared the Strait of Hormuz closed.

ConflictDeveloping
Key takeaway

Oil fell the day Hormuz was declared shut, the market betting the closure is words, not a sealed strait.

Brent Crude eased about 1.7 per cent to $94.71 on 11 June, with WTI near $91.84, on the very day the IRGC declared Hormuz closed to all traffic. The move was a pullback from the $96.34 peak Brent reached on 10 June , and it came after CENTCOM said its strikes were complete. A closure announcement that sends oil down, rather than up, is the market reading the words and discounting them.

A strait genuinely sealed, with enforcement that held, does not let crude fall. Traders priced the IRGC order as rhetoric, weighing it against CENTCOM's denial that transit had stopped and against the absence of any independently verified incident. The "strikes complete" line did the rest, removing the immediate threat of further escalation that had driven the prior day's spike.

Futures and insurance now point opposite ways. The futures market is betting the closure is a declaration that will lapse, while marine insurers are repricing the legal risk of a war-risk zone that exists on paper whether or not a ship is ever stopped. The gap between the two prices is the gap between what the IRGC said and what anyone can confirm it did.

Deep Analysis

In plain English

The price of oil dropped slightly on the day Iran's military declared the Strait of Hormuz closed. That sounds backwards. Usually, closing a major oil route would send prices up, because less supply reaching markets means higher costs. Traders weighted CENTCOM's 'strikes complete' statement over the IRGC's Telegram post, driving Brent down 1.7 per cent to $94.71 rather than up. The US military said ships were still sailing through normally, and Iran's military has threatened to close the strait before without following through. So oil markets took the closure announcement as words on a screen, not an actual blockage. However, shipping insurance companies, which move more slowly and need official government sign-offs to change their assessments, did not drop their risk premiums. This means the cost of actually insuring a cargo ship through the strait stayed high even as the headline oil price fell.

What could happen next?
  • Risk

    If Windward or Kpler record transit volumes falling below three vessels in a 24-hour window, futures markets will reprice immediately and the Brent discount will reverse sharply, likely to above $100.

    Immediate · Assessed
  • Consequence

    Lloyd's of London's continued war-risk listing of Hormuz means every cargo transiting the strait now carries an elevated insurance cost regardless of futures pricing, increasing the effective landed cost of Gulf oil for European refiners.

    Short term · Reported
  • Meaning

    Markets pricing CENTCOM's 'strikes complete' statement as a de-escalation signal over the IRGC's closure declaration shows that traders have shifted their primary price signal from Iranian statements to US operational announcements.

    Immediate · Assessed
First Reported In

Update #124 · IRGC declares Hormuz shut; US strikes again

Gulf News / NBC News / Business Standard· 11 Jun 2026
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CENTCOM
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