JPMorgan warns Iran war could trigger 10% S&P 500 drop as oil tops $100
Mar 9th 2026
JPMorgan's trading desk says escalating conflict with Iran and disruptions to Middle East oil flows could push the S&P 500 down about 10% while crude tops $100 a barrel, raising inflation and market volatility risks.
- JPMorgan trading desk led by Andrew Tyler moved to a tactically bearish stance and warned of a possible 10% S&P 500 decline from the index peak, about 7% from last Friday's close to roughly 6,270.
- Brent crude surged to about $102.50 and West Texas Intermediate reached about $98.75, with Brent up roughly 5% on Monday.
- US stocks dipped modestly with the S&P 500 down 0.8%, the Dow down 1.1% and the Nasdaq down 0.9% while major energy names like Exxon Mobil gained about 3.2%.
- JPMorgan said a US or Israeli strike on Iran's Kharg Island would likely halt most Iranian crude exports and could trigger severe retaliation in the Strait of Hormuz or against regional energy infrastructure.
- Higher oil prices and supply fears are raising inflation risks, pushing the 10-year Treasury yield to about 4.1% and prompting warnings that global GDP could lose roughly 0.5% if fighting continues.
- Traders remain broadly neutral in positioning and JPMorgan noted the call is tactical because a clear de-escalation could quickly reverse market impacts.