Full Breakdown
Iran War Tests U.S. Stock Market Resilience
4/25/2026, 8:43:54 PM
War in Iran Sends Shockwaves Through Markets
The United States and Iran entered open conflict on 28 February 2026. The S&P 500 fell more than 5 % in March, hitting a low on 30 March. In the first 11 trading days of April the index rebounded 10.7 %, and by 21 April it posted a 0.8 % monthly gain, recapturing pre-war levels. Crude oil jumped roughly 60 %, gasoline topped $4 per gallon, inflation rose to 3.3 % (above the Fed’s 2 % goal), and bond yields moved higher.
Key Market Timeline
- 28 Feb 2026: War begins.
- 30 Mar 2026: S&P 500 bottom, down >5 %.
- 1-11 Apr 2026: Index up 10.7 % in 11 sessions.
- 21 Apr 2026: S&P 500 ends month +0.8 %; oil prices still high.
Market Metrics
By late April the S&P 500 was up 0.8 % for the month and 11 % since the March trough. Oil stayed about 60 % above pre-war levels, gasoline topped $4 per gallon, inflation at 3.3 %, and the 10-year Treasury yield rose.
Earnings Outlook and AI Influence
Analysts say accelerating earnings expectations drive the rally, with double-digit growth projected for Q1, largely from technology firms benefiting from AI expansion. The outlook assumes the oil shock will not linger.
Analyst Commentary
Morningstar editor Tom Lauricella said that geopolitical disruptions make it essential to review portfolio allocations and valuations. He noted bond yields rose on the oil shock and a growing U.S. deficit. The Fed’s outlook stays uncertain as Chairman Jerome Powell’s term ends in May and President Trump has nominated former Fed governor Kevin Warsh as successor.
Risks and Dissent
Critics warn the rally may hide risks. Persistent high energy prices keep inflation above the Fed’s 2 % target, pressuring policy. Reliance on AI-driven earnings could backfire if tech spending slows, and rising bond yields signal higher risk premiums.
Divergent Views
Some analysts view the S&P 500’s quick rebound as evidence of resilience, while others note no consensus on the oil shock’s duration. No source offers a firm timeline for its impact on earnings or spending.
Verbatim Quotes
- “It’s an amoral and apolitical profit-loving machine that exists to make you pull your hair out at times when trying to figure out what’s going on.” — Michael, A Wealth of Common Sense
- “Tom Lauricella, global markets editor, Morningstar Inc The Takeaway: Geopolitics is throwing curveballs at investors.” — Tom Lauricella, Global Markets Editor, Morningstar
Outlook
The upcoming earnings season, especially from leading AI-driven tech firms, will test forward guidance. Investors will watch the Federal Reserve’s policy stance as the new chair nominee is confirmed and monitor bond-market reactions to any escalation or de-escalation of the Iran conflict.
