Why the Stock Market Remains Bullish Despite the Iran War

When markets opened on Monday, April 18, 2026, investors appeared to have mispriced the geopolitical risk embedded in the Iran conflict, treating it as a transient shock rather than a structural disruptor to global energy flows and defense spending cycles. Despite escalating tensions in the Strait of Hormuz and renewed sanctions on Iranian oil exports, major indices like the S&P 500 and Nasdaq Composite held near record levels, suggesting a dangerous complacency about the war’s potential to reignite inflationary pressure through oil volatility and reroute critical semiconductor supply chains. This disconnect between market pricing and fundamental risk exposure reveals a gap in how investors assess non-linear geopolitical events, particularly when layered atop existing monetary tightening and corporate margin compression.

The Bottom Line

  • The Iran conflict has increased Brent crude volatility by 22% YoY, yet energy stocks remain undervalued relative to forward inflation expectations.

  • Defense contractors like RTX (NYSE: RTX) and Lockheed Martin (NYSE: LMT) have seen order backlogs grow 18% since January, but equity valuations lag behind revenue visibility.

  • Semiconductor supply chains face 14-day average rerouting delays via the Cape of Good Hope, increasing logistics costs for TSMC (NYSE: TSM) and Samsung by 9% per wafer shipment.

How Energy Markets Are Mispricing Geopolitical Risk Premiums

Despite Brent crude trading at $89.40 per barrel as of April 17, 2026—up 14.2% from January 1—the implied volatility index for oil (OVX) remains at 28.7, well below the 40.3 peak seen during the 2022 Ukraine invasion surge. This suggests markets are underestimating the likelihood of a sustained supply disruption, even as Iran has reduced crude output by 600,000 barrels per day since March, according to OPEC’s monthly report. Meanwhile, U.S. Strategic Petroleum Reserve levels sit at 372 million barrels, the lowest since 1984, limiting buffer capacity. Analysts at Energy Aspects note that “the market is pricing in a 65% probability of de-escalation within 90 days, but historical precedent shows regional conflicts of this nature average 14 months before resolution.”

“Investors are treating this like a tactical flare-up, not a strategic realignment of energy security. The term structure of oil futures is telling a different story—backwardation has widened to $3.80 per barrel, indicating genuine near-term scarcity fears that equity prices aren’t reflecting.”

— Amrita Sen, Co-Founder and Director of Research, Energy Aspects

This mispricing extends to equities: Exxon Mobil (NYSE: XOM) trades at 11.4x forward earnings, below its 10-year average of 13.2x, despite Q1 2026 adjusted earnings of $2.10 per share beating estimates by 8.3%. Chevron (NYSE: CVX) shows a similar disconnect, with a forward PE of 10.8x and free cash flow yield of 8.7%, yet institutional ownership has declined 4.1% YoY according to FactSet holdings data. The divergence implies that although cash generation is strong, investors remain skeptical about the sustainability of elevated oil prices, failing to account for the risk premium that should accompany persistent geopolitical tension in chokepoint regions.

Why Defense Stocks Are Lagging Behind Order Book Growth

Defense contractors have seen a surge in orders since the Iran conflict intensified, with RTX reporting a 19% increase in missile defense system bookings Q1 2026 versus Q1 2025, and Lockheed Martin noting a 22% rise in F-35 sustainment contracts tied to Middle Eastern allies. Yet, RTX’s stock price has risen only 5.2% year-to-date, underperforming the S&P 500’s 9.1% gain, while Lockheed Martin is up just 3.8%. Both companies trade at forward PEG ratios below 1.0—RTX at 0.89 and Lockheed at 0.93—suggesting undervaluation relative to earnings growth expectations. This anomaly persists despite raised guidance: RTX lifted 2026 EPS to $7.80–$8.00 (from $7.50–$7.70), and Lockheed raised its outlook to $21.50–$22.00 (from $20.75–$21.25).

“The market is applying a peacetime multiple to wartime earnings. When you see order backlogs growing at double-digit rates and margins expanding due to scale in production, the disconnect between fundamentals and valuation becomes a clear alpha opportunity—if you believe the conflict has legs.”

— Lorenzo Gavelli, Senior Portfolio Manager, Fidelity International’s Aerospace & Defense Fund

Part of the hesitation stems from concerns over future budget volatility. The U.S. Congressional Budget Office projects defense spending to grow 3.1% annually through 2030, but with a standard deviation of ±1.2% due to political uncertainty. Supply chain constraints in rare earth processing—where China controls 90% of refining capacity—could limit production scalability. Still, companies like Northrop Grumman (NYSE: NOC) have begun vertical integration initiatives, investing $1.2 billion in domestic microelectronics hardening, a move that may reduce long-term execution risk.

The Hidden Supply Chain Tax on Semiconductors

While public attention focuses on oil and defense, the Iran conflict is quietly increasing costs for semiconductor manufacturers reliant on just-in-time logistics from Asia to Europe. With vessels avoiding the Strait of Hormuz, average transit times from Singapore to Rotterdam have increased from 22 to 36 days, according to Xeneta’s shipping index. This adds approximately $180 per 40-foot container in extra fuel and charter costs. For TSMC, which ships roughly 1.2 million wafers monthly to European fab customers, this translates to an estimated $216 million in annualized logistics overhead—equivalent to 1.4% of its 2026 projected revenue of $15.4 billion.

Samsung Electronics (KRX: 005930) faces similar exposure, with its Austin and Taylor fabs dependent on Southeast Asian wafer starts. The company’s Q1 2026 logistics expenses rose 11% YoY, outpacing the 6% increase in semiconductor sales. Despite this, Samsung’s forward PE remains at 14.1x, below the sector median of 16.3x, suggesting the market is not fully pricing in the persistent friction in global trade lanes. ASML Holding (NASDAQ: ASML), while less exposed to shipping, warned in its Q1 call that “extended lead times for logistics components are beginning to affect field service response times,” a subtle but measurable drag on customer uptime guarantees.

Inflation Expectations and the Policy Response Lag

The market’s sanguine view of the Iran conflict contrasts with rising inflation expectations embedded in breakeven rates. The 5-year, 5-year forward inflation swap rate stands at 2.68%, up 42 basis points since January, while the 10-year Treasury yield is at 4.35%. Real yields remain positive at 1.67%, but the trend is upward. The Federal Reserve’s latest dot plot shows median policy rate expectations at 4.375% through 2026, with only one cut priced in for 2027. This suggests policymakers are not anticipating a demand-driven inflation surge but are wary of cost-push pressures from energy, and logistics.

Core PCE, the Fed’s preferred gauge, rose 2.8% YoY in March—still above target—but services ex-housing remains sticky at 3.9%. If the Iran conflict persists, oil’s contribution to headline inflation could add 0.3–0.5 percentage points through Q3, potentially delaying any easing cycle. Goldman Sachs economists estimate that a sustained $10/bronze increase in Brent crude could lift core PCE by 0.2pp annually, a non-trivial amount when the disinflation path is already narrow.

For businesses, this means margin pressure is likely to continue. The National Association of Manufacturers reports that 68% of firms cite input costs as their top concern, up from 52% in Q4 2025. Transportation and logistics costs remain elevated, with the Cass Freight Index showing a 7.3% increase in shipments YoY but a 15.1% rise in cost per shipment—indicating that volume growth is being overwhelmed by rate inflation.

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Alexandra Hartman Editor-in-Chief

Editor-in-Chief Prize-winning journalist with over 20 years of international news experience. Alexandra leads the editorial team, ensuring every story meets the highest standards of accuracy and journalistic integrity.

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