European equities fell to a two-week low on Monday as escalating hostilities in the Middle East triggered a broad-based retreat from risk assets, with investors repricing geopolitical and energy risk across sectors.

The pan-European STOXX 600 declined 1.5% to 623.98 points by early trade, its lowest level since mid-February and on track for its steepest one-day fall in more than seven months. The drop pulled the index away from a record high reached on Friday, underscoring the speed with which sentiment has reversed.

National benchmarks followed suit. Germany’s DAX slid to a more than three-week low, France’s CAC 40 touched a near two-week trough, and Spain’s IBEX 35 fell to its weakest level in over a fortnight.

The market reaction followed fresh U.S. and Israeli strikes on Iran after weekend attacks that killed Iran’s Supreme Leader, Ayatollah Ali Khamenei. Tehran responded with missile barrages across the region, raising concerns of a widening conflict that could disrupt energy exports and maritime trade.

Paolo Zanghieri, senior economist at Generali Investments, said the coordinated action suggested a prolonged campaign. He noted that Brent crude had briefly exceeded $80 per barrel during a limited flare-up in 2025, and that the current escalation appears broader in scope.

Energy shock reverberates through markets

Oil markets are central to the repricing of risk. Brent crude jumped as much as 13% after Iranian attacks disrupted shipping through the Strait of Hormuz, which handles more than 20% of global oil transit. Traders quoted prices near $80 per barrel in early dealings, embedding a rising geopolitical premium.

For Europe, which remains structurally dependent on energy imports, sustained higher oil prices carry implications for inflation, consumer spending, and industrial margins. A move toward or above $100 per barrel—flagged by some analysts as possible under prolonged disruption—would likely complicate the European Central Bank’s policy path, particularly if headline inflation reaccelerates.

The surge in crude lifted energy majors. Shell, BP, and TotalEnergies gained between 2% and 4%, pushing the regional energy index to a record high. Higher realized prices directly support upstream earnings and cash flow, partially insulating the broader market from deeper losses.

Financials and travel stocks under pressure

Banks absorbed some of the heaviest selling. The euro zone banking index fell 3.6%, while insurers dropped 2%. UK lenders, with significant business ties in the Middle East and Asia, were particularly exposed. HSBC, Barclays, and Standard Chartered declined between 4% and 5%.

Rising oil prices typically strengthen net interest margins through inflation expectations, yet geopolitical shocks increase credit risk and dampen capital market activity. Investors appear to be prioritizing downside growth risks over margin expansion.

Airlines and travel-related stocks were hit by airspace closures and route suspensions across a critical aviation corridor linking Europe, the Gulf, and Asia. Lufthansa fell as much as 11%. International Consolidated Airlines Group and Air France-KLM lost 5% and 7% respectively. The travel and leisure sector fell to its lowest level since mid-November and was on course for its largest daily loss since April.

Higher jet fuel costs compound operational disruptions, pressuring margins at a time when demand recovery had been stabilizing after earlier volatility.

Luxury, retail, and exporters caught in downdraft

Consumer-facing stocks weakened amid concerns about discretionary spending and global supply chains. LVMH and Kering both fell around 4%, while the broader retail index shed 3.6%.

Luxury groups are sensitive to both Asian demand and currency fluctuations. A stronger dollar—typical during geopolitical stress—can weigh on euro-denominated earnings and cross-border consumption patterns.

Export-heavy industrials also declined as investors factored in potential shipping delays and rising freight costs. Disruptions to Hormuz and the Suez route threaten to tighten vessel capacity and extend transit times, increasing working capital requirements and squeezing margins across manufacturing supply chains.

Defense and shipping outperform

Defense stocks extended a strong 2025 rally, reflecting expectations of sustained military spending. BAE Systems, Rheinmetall, and Leonardo rose between 2% and 6%. The sector has gained nearly 60% this year, driven by rising NATO commitments and security tensions.

Shipping companies also advanced as longer rerouting around Africa and higher war-risk premiums point to firmer freight rates. Maersk and Hapag-Lloyd gained about 4.5%, supported by expectations of tighter vessel supply and elevated charter rates.

Utilities, often viewed as defensive bond proxies, were marginally lower, while consumer staples were broadly steady. Nestle was little changed, reflecting relative resilience in essential goods.

Volatility and macro crosscurrents

Europe’s volatility gauge, the STOXX volatility index, rose to its highest level since mid-November, signaling heightened demand for hedging and protection strategies.

The geopolitical shock arrives amid a packed economic calendar. Investors are awaiting euro zone inflation data, consumer and producer price releases, unemployment figures, purchasing managers’ indices, and retail sales. February PMI surveys showed manufacturing in France and Italy expanding, with Germany’s sector showing tentative recovery. A sustained energy shock could undermine that improvement.

Markets are now balancing three forces: the scale and duration of the Gulf conflict, the trajectory of oil prices, and the sustainability of European growth. For the moment, risk appetite is being dictated less by earnings or macro data and more by developments in the Strait of Hormuz and the broader regional security outlook.

Global defense shares rallied sharply on Monday as investors reacted to the escalating conflict in the Middle East, rotating into military contractors while broader equity markets fell on concerns over growth, inflation, and geopolitical spillover.

In Europe, Germany’s Hensoldt and Britain’s BAE Systems climbed more than 5%, leading gains on the regional benchmark. France’s Thales, Germany’s Renk, and Italy’s Leonardo rose between 3.1% and 4.5%. The broader Stoxx 600 fell 1.4%, touching a two-week low.

In the United States, Lockheed Martin gained 7.7% in premarket trading, and Northrop Grumman advanced 5.2%, even as futures tied to the S&P 500 dropped about 1%. In Asia, Japan’s Mitsubishi Heavy Industries and IHI Corporation each rose around 3%, while Singapore’s ST Engineering added 2.8%.

The gains followed U.S. and Israeli strikes that killed Iran’s Supreme Leader, Ayatollah Ali Khamenei, and Iranian retaliation that left three U.S. service members dead. President Donald Trump said the conflict could last up to four weeks and warned of further American casualties.

The rally indicates more than a short-term reaction. Defense companies have already benefited from a multi-year uptrend in military spending across NATO and parts of Asia, driven by heightened geopolitical tensions. The latest escalation reinforces expectations that procurement cycles will accelerate.

Missile defense systems, precision-guided munitions, radar arrays, drones, and electronic warfare platforms are likely to see sustained demand. Companies such as Lockheed Martin and Northrop Grumman are central to U.S. missile defense and air dominance programs. Hensoldt and Thales specialize in radar and sensor technologies, while BAE Systems and Leonardo have diversified exposure across air, land, and naval platforms.

Conflicts of this nature also expose inventory constraints. Western militaries have depleted stockpiles of interceptors and advanced munitions in recent years. Replenishment contracts tend to be multi-year and high margin, supporting earnings visibility. Investors are therefore pricing in both immediate restocking and structural budget expansion.

Another dimension is the acceleration of autonomous and counter-drone systems. Iran’s use of drones in retaliation underscores the increasing centrality of unmanned systems in modern warfare. Firms with exposure to anti-drone technology, surveillance satellites, and command-and-control software may benefit disproportionately.

Energy shock and macroeconomic spillovers

The defense rally unfolded against a broader risk-off backdrop. Oil prices jumped as markets assessed the risk of supply disruption across the Gulf, a region central to global crude exports. Energy equities rose, but higher oil prices introduce macroeconomic complications.

A sustained rise in crude prices can feed into transport, manufacturing, and food costs, potentially lifting headline inflation. That in turn could constrain central banks’ flexibility, particularly if policymakers had been preparing to ease monetary conditions. Equity valuations, already stretched in some sectors, may face renewed pressure if real yields rise.

Patrick O’Donnell, chief investment strategist at Omnis Investments, said uncertainty around duration is the key variable.

“It’s very much one of uncertainty at the moment that investors are grappling with,” he told CNBC’s “Squawk Box Europe,” adding that markets are weighing implications for both growth and inflation.

Duration matters for defense equities as well. A short, contained conflict may lead to tactical gains that fade once tensions ease. A protracted confrontation — especially one involving sustained air campaigns, naval deployments, or expanded regional participation — could trigger durable increases in procurement budgets.

Fiscal, political, and market implications

Governments may face mounting pressure to raise defense outlays beyond existing commitments. In Europe, where several countries have already pledged to meet or exceed NATO’s 2% of GDP spending target, further escalation could accelerate supplemental appropriations. In the United States, Congress may be asked to approve emergency funding packages tied to operations and replenishment.

That fiscal expansion intersects with broader budget debates. Higher defense spending, combined with potential energy subsidies or reconstruction aid, could widen deficits. Sovereign bond markets may respond if issuance increases materially.

From a market structure perspective, defense stocks often function as a geopolitical hedge within diversified portfolios. Institutional investors may increase exposure not solely for earnings growth but for risk offsetting characteristics during periods of instability.

At the same time, valuations in parts of the sector have already risen substantially over recent years. The sustainability of the rally will depend on contract flow, margin resilience amid supply chain constraints, and political consensus around sustained military expenditure.

Now, defense contractors are absorbing capital fleeing broader equity markets. The possibility of that rotation becoming entrenched will likely depend on the conflict’s trajectory, the scale of fiscal response, and the extent to which energy-driven inflation reshapes the global macro outlook.