U.S. stocks fall as oil jumps on Iran strike reports
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The gist
U.S. stocks fell Thursday, with the Nasdaq down 1.5%, as Brent crude rose above $112 a barrel.
Oil and AI-spending worries together pulled investors out of tech shares.
Background
The pullback followed a record-setting stretch: the S&P 500 had hit a record on Oct. 6, and Wednesday's session saw the S&P 500 add 0.58% to 7,757.17 and the Nasdaq jump 1.05%, helped by SpaceX shares surging about 7% after the company said revenue grew 161% in the third quarter. Sentiment reversed overnight as oil climbed on reports of planned U.S.-Israel strikes on Iran and as concerns about the sustainability of the AI trade resurfaced, with Nvidia CEO Jensen Huang saying demand for neoclouds (cloud providers built around AI chips) is "off the charts" but capital is scarce.
How it unfolded
- Oct 21, 2026U.S. indexes rose: the S&P 500 added 0.58% to 7,757.17, the Nasdaq Composite jumped 1.05% to 26,702.86 and the Dow rose 360.21 points to 52,856.09. SpaceX shares surged about 7% on 161% revenue growth, while Netflix fell more than 5% on a weak revenue forecast.
- Oct 21, 2026Tesla reported Q3 sales of $28.05 billion, roughly flat year over year, with net income falling to $787 million from $1.37 billion; shares slipped about 2% after hours. An Aramco oil field in Saudi Arabia's Eastern Region came under attack, and Brent jumped more than $1.50 a barrel.
- Oct 22, 2026U.S. stock futures fell, with Nasdaq-100 futures down more than 1.5%, as Brent traded 3% higher above $112.45 a barrel and WTI rose above $99.95. The 10-year Treasury yield dropped more than 9 basis points to 5.048%.
- Oct 22, 2026The Nasdaq Composite slid 1.5%, the S&P 500 shed 0.8% and the Dow fell 81 points; Meta slipped 5% despite beating revenue expectations, and AMD fell more than 5%. Lockheed Martin rose more than 3% on better-than-expected results, and China's CSI 300 entered bear-market territory, down 20% from its June peak.
Who’s saying what
- Analysts
- Cresset chief market strategist Joe Zidle said SpaceX suggests there is still a longer runway, but the tendency to get overly enthusiastic and over-capitalize things has not changed.
- Caution
- Wells Fargo traders said Nvidia CEO Jensen Huang's comments on scarce capital are spooking markets and reigniting concerns that credit-side risk appetite is full.
- Analysts
- JPMorgan traders said Wednesday's bullish tone reversed overnight amid Meta shares rolling over and chatter over renewed Iran kinetic risk after the U.S. midterm elections.
- Official
- CME Group outgoing CEO Terry Duffy said innovation must be balanced with effective regulation and raised concerns about the CFTC's handling of self-certified contracts and extreme leverage without enforceable limits.
Still unverified
A New York Times report, citing sources, said the U.S. and Israel have plans for renewed strikes against Iran following next month's U.S. midterm elections. Details on damage or whether production was affected in the attack on the Aramco oil field were not immediately available.