Global Equities Under Pressure: How Iran Tensions Are Reshaping Stock Market Scenarios
bIAnk AI Research · April 2026 · 9 min
The Iran conflict has triggered a broad de-risking across global equity markets. With the S&P 500 down 8%, European indices under pressure and emerging market outflows accelerating, portfolio managers face a complex risk-reward landscape across sectors and geographies.
Global equity markets have entered a correction phase not seen since the 2022 bear market. The S&P 500 has fallen 8.2% from its February peak, the STOXX Europe 600 is down 9.5%, and the MSCI Emerging Markets index has declined 11.3%. The VIX has surged from 14 to 32, reflecting a dramatic shift in risk sentiment.
Sector dispersion has reached extreme levels. The S&P 500 Energy sector has gained 14% YTD, while Consumer Discretionary is down 12%—a 26 percentage point spread that rivals the 2022 energy crisis. Defense stocks (Lockheed Martin, Rheinmetall, BAE Systems) have outperformed their broader indices by 18-25 percentage points, while airlines (IAG, Lufthansa, Delta) have seen 15-20% drawdowns.
European markets face a particularly acute challenge. The Euro STOXX 50's P/E ratio has compressed from 14.2x to 12.8x, reflecting both earnings downgrades and the risk premium expansion. Deutsche Bank estimates that every $10/barrel increase in oil reduces European corporate earnings by approximately 1.5%, suggesting that the current oil shock could shave 4-5% off aggregate EPS estimates.
Emerging markets are experiencing differentiated impacts. Oil-exporting nations (Saudi Arabia, UAE, Nigeria) have seen equity market rallies of 5-12%, while oil-importing EM economies (India, Turkey, Thailand) face currency pressure and capital outflows totaling $18 billion in March. The MSCI EM ex-Energy index is down 14% from peak.
Asian markets present a mixed picture. Japan's Nikkei 225 has declined 7.8%, partly due to yen strengthening as a safe-haven, which compounds earnings pressure on exporters. China's CSI 300 has been relatively resilient (-3.2%), benefiting from its status as a non-aligned buyer of discounted Iranian and Russian crude, though geopolitical risk premiums remain elevated.
Morgan Stanley's equity strategy team models three scenarios for year-end 2026. The bull case (de-escalation by Q3) sees the S&P 500 recovering to 5,800-6,000. The base case (prolonged tension without Hormuz disruption) targets 5,200-5,500. The bear case (sustained conflict with shipping disruption) points to 4,600-4,800, representing a further 8-12% downside from current levels.
Key takeaways
- S&P 500 -8.2%, STOXX 600 -9.5%, MSCI EM -11.3%—VIX surged from 14 to 32
- Energy vs Consumer Discretionary spread at 26pp—extreme sector dispersion
- Every $10/bbl oil increase reduces European corporate earnings ~1.5% (Deutsche Bank)
- EM capital outflows reached $18B in March—oil importers under acute pressure
- Morgan Stanley bear case: S&P 500 at 4,600-4,800 in sustained conflict scenario