Strait of Hormuz Tensions Persist After US-Iran MoU: BP and Shell in Focus

What the Strait of Hormuz standoff changed

Since the United States and Iran signed a memorandum of understanding on 17 June aimed at easing tension in the Gulf, the situation around the Strait of Hormuz has stayed unsettled rather than calm. Fresh reports of strikes and explosions in southern Iran show that the fragile truce has not stopped military activity in the region. The strait sits between Iran and Oman and is the narrowest choke point for oil leaving the Gulf, so any sign that the truce is fraying keeps a risk premium alive in the oil market even without an actual blockade of shipping.

Why it matters for oil and travel stocks

Roughly a fifth of the world's seaborne oil trade passes through the Strait of Hormuz, so traders tend to price in a premium whenever there is a credible risk that shipping could be disrupted, even if tankers keep moving normally on any given day. That premium shows up in the price of Brent crude, the global oil benchmark. When Brent trades firmer on this kind of headline risk, companies that produce and sell crude earn more per barrel, while companies that burn a lot of fuel, especially airlines, see their costs rise. Neither effect depends on the strait actually closing, only on the market believing that it could.

Which stocks, and why

BP and Shell both produce and sell crude oil internationally, so a firmer Brent price on Gulf risk supports their revenue per barrel, even though neither company has direct operations in Iran. This is a market-wide pricing effect rather than anything specific to either company, so the lift is real but modest unless the standoff escalates much further.

International Airlines Group, the owner of British Airways, Iberia, Aer Lingus and Vueling, sits on the other side of this trade. Jet fuel is one of its largest costs, and a sustained rise in oil prices eats into margins on every flight. As with the oil majors, this is a general fuel-cost effect tied to the crude price rather than anything about IAG's own routes or bookings.

None of these three companies is at the centre of this story. Iran is not a market that any of them serves directly, and the memorandum itself involves neither company. The link runs entirely through the price of Brent crude, so for now it stays a background influence rather than something that would show up clearly in a single quarter's results, unless the standoff drags on or worsens.

What to watch

The clearest signal to track is the Brent crude price itself over the coming days, and whether it holds any gains from this news or fades as the headlines settle. Also worth watching are any reports of actual tanker incidents or naval activity near the strait, which would mark a step up from rhetoric toward real disruption, and any follow-up statements from Washington or Tehran on whether the 17 June memorandum still holds. Until there is a confirmed disruption to oil shipments, this remains a sentiment-driven risk premium rather than a change to the underlying fundamentals of any of these three companies.