• Morgan Stanley (MS) says European equities are most sensitive to a potential reopening of the Strait of Hormuz.
  • Airlines, aerospace, construction, luxury, and banks could benefit most from a resolution.
  • The bank remains overweight banks, semiconductors, and capital goods; France's CAC 40 shows the strongest positive correlation to reopening.

Fragile Prospects

Efforts to reopen the Strait of Hormuz have hit a snag, with Iran's demands and contradictory signals keeping markets on edge. Iranian Foreign Minister Abbas Araqchi met U.S. Special Envoy Steve Witkoff on the sidelines of the UN General Assembly on September 22, according to people familiar with the matter. Tehran conveyed conditions for reopening the waterway: lifting the naval blockade, releasing frozen Iranian assets, and ending the war across “resistance” fronts. A senior Iranian official told Reuters (TRI) that Iran could restore passage within seven days if the U.S. formally committed to diplomacy, eased military pressure, and agreed a timetable. The proposal was reportedly delivered through mediators on September 16.

But this is not a completed agreement. Iran's military warned of broad retaliation if the U.S. resumed military operations, and a separate Iranian official disputed reports of the offer. Markets should therefore treat the development as a negotiating signal rather than confirmation that shipping will normalize. Without a deal, the company—or rather the region—would remain in a state of disrupted energy flows and elevated risk premia.

The immediate market response was consistent with reduced disruption risk: Brent crude was reported down 2.6% to $97.73 a barrel and WTI down 3.1% to $92.40 after the reports, although both remain elevated in a war-disrupted energy market.

European Equities in Focus

Morgan Stanley's central point is that European equities have unusually high sensitivity to a Hormuz reopening, with France's CAC 40 showing the strongest positive correlation among major European markets. The logic is principally a reversal of the energy, transport, supply-chain, inflation, and risk-aversion shocks created by constrained Gulf shipping.

Airlines stand to benefit from lower jet-fuel costs and reduced route disruptions, though fuel-price relief may be delayed by hedging. Aerospace and defense-adjacent industrials could see resumption of aviation activity and supplier logistics, but defense spending may remain high even if shipping improves. Construction and capital goods would enjoy cheaper energy and smoother access to energy-intensive materials, yet higher European borrowing costs or weaker property demand could still constrain activity. Luxury may get a boost from reduced inflation and travel disruption, but Chinese and global high-end demand, FX rates, and inventory discipline remain major drivers.

Banks are also on the winners' list. Lower energy-led recession risk can improve loan-growth, credit-loss, and valuation expectations, although banks remain sensitive to interest-rate paths, credit conditions, and sovereign-risk concerns. Semiconductors could see less logistics and energy cost pressure across the supply chain, but sector performance still depends heavily on AI demand, inventories, export controls, and capital expenditure.

Morgan Stanley remains overweight banks, semiconductors, and capital goods—a positioning that fits a “de-escalation trade” of weaker oil prices, improving European cyclicals, better sentiment for airlines and travel-linked shares, and a relative bid for banks and industrials.

Chokepoint Dynamics

The Strait of Hormuz normally carries about 20% of world oil and liquefied-natural-gas supplies, according to CNBC. Prolonged disruption therefore affects not only Gulf producers and energy importers but also worldwide inflation, industrial margins, consumer purchasing power, shipping insurance, and central-bank decisions.

A sustained restoration of shipping could reduce oil and LNG supply fears, lowering input costs for transport, chemicals, manufacturing, utilities, and households. A lower energy shock could ease headline inflation pressures, supportive for consumer-facing firms and potentially giving monetary authorities more room to cut interest rates. It could also improve confidence in global trade and reduce freight and insurance costs, helping internationally exposed European firms, particularly in France, Germany, and the Netherlands. Conversely, energy producers and oilfield-service companies may come under pressure if crude's geopolitical premium declines.

Politically, the prospective reopening is part of a broader U.S.-Iran bargaining process. Tehran is tying passage to sanctions-related relief, the release of frozen funds, an end to U.S. naval pressure, and an end to wider hostilities. Washington, meanwhile, is intensifying economic pressure: Treasury Secretary Scott Bessent said the U.S. intended to restrict Iranian airlines' access to fuel, ground services, ticket sales, and ultimately the dollar system.

The situation also has a second chokepoint dimension. Iran-backed Houthis have threatened or attacked shipping around the Bab el-Mandeb, and reports indicate they seized Yemen's Perim Island. That matters because the Red Sea route is an alternative path for some Gulf oil exports, including flows that Saudi Arabia can redirect through its East-West pipeline. Reopening Hormuz alone would therefore reduce—but not eliminate—regional maritime risk.

What to Watch

Near term, the largest potential move is a “de-escalation trade”: weaker oil prices, improving European cyclicals, better sentiment for airlines and travel-linked shares, and a relative bid for banks and industrials. Morgan Stanley's positioning—overweight banks, semiconductors, and capital goods—fits that framework. The CAC 40 could outperform if its historical correlation to a reopening holds, given its exposure to luxury, industrials, financials, and global multinationals.

But a political offer is not equivalent to reopened transit. The conditions are extensive, military rhetoric remains severe, and the U.S. is simultaneously escalating sanctions pressure. Any sign that the demands are unacceptable, that talks have stalled, or that conflict broadens could restore the oil premium and reverse the sector rotation quickly.

A durable agreement would need more than a short-term clearance of vessels. It would likely require a credible maritime-security mechanism, durable rules around sanctions and Iranian assets, and a containment of the conflict's regional fronts—including Houthi activity near Bab el-Mandeb. Without those elements, companies may continue to pay structurally higher costs for insurance, alternative routes, inventory buffers, and energy hedging even after traffic resumes.

The present crisis follows nearly seven months of Middle East war, according to CNBC's account, alongside severe disruption of Hormuz shipping. Reuters reports that Iran's current proposal comes amid talks and mediation at the UN General Assembly, with no planned direct meeting between Presidents Masoud Pezeshkian and Donald Trump. The immediate historical precedent is the June arrangement reportedly intended to halt military operations and reopen navigation; reporting says that framework later broke down over navigation and security arrangements.

More broadly, prior Hormuz crises have repeatedly demonstrated the same transmission mechanism: threats to transit tend to raise crude prices, tanker rates, war-risk insurance and global-risk aversion, while credible de-escalation reduces those premiums. The distinction here is that two connected maritime bottlenecks—Hormuz and Bab el-Mandeb—are simultaneously relevant.

Morgan Stanley did not respond to a request for comment. This article was updated to clarify that the Strait of Hormuz reopening is a conditional proposal, not a confirmed agreement.