Stock market today: Dow, S&P 500, Nasdaq fall as chip stocks tumble, oil surges on US-Iran tensions

Stock market today: Dow, S&P 500, Nasdaq fall as chip stocks tumble, oil surges on US-Iran tensions Grace O'Donnell and Jake Conley Updated Tue, July 14, 2026 at 1:04 AM GMT+2 2 min read ^DJI CL=F ^GSPC ^IXIC SKHY Stocks fell at the start of  a busy week  after the US and Iran escalated fighting in the Middle East, sending oil prices higher, and AI stocks came under pressure. The Dow Jones Industrial Average ( ^DJI ) declined 0. 3%.

Meanwhile, the S&P 500 ( ^GSPC ) dropped 0. 8%, while the Nasdaq Composite ( ^IXIC ) fell by 1. 6% after the two indexes eked out gains last week.

Semiconductor stocks declined, led by shares of memory maker SK Hynix ( SKHY ). Markets were on edge after the US renewed strikes near the Strait of Hormuz over the weekend, and Iran retaliated with fresh strikes against US allies, including Kuwait, Jordan, and Qatar. The flare-up threatened to derail talks between the US and Iran to end the war, which President Trump stated were ongoing even as he said he considers the ceasefire "over.

" Oil prices jumped, with Brent crude ( BZ=F ) jumping above $82 per barrel again, after President Trump vowed to reinstate the blockade of the Strait of Hormuz. The president also said the US plans to charge a 20% fee on all cargo transiting the strait, heightening tensions around control of the crucial waterway. The resumption of hostilities in the region revived inflation worries just as the market is set to receive two crucial inflation reports this week: the Consumer Price Index on Tuesday and the Producer Price Index on Wednesday.

The readings will provide fresh signals on the likelihood of Fed interest rate hikes this year. Investors also look forward to the unofficial kick-off of earnings season this week, led by big bank results from JPMorgan Chase ( JPM ), Goldman Sachs ( GS ), Bank of America ( BAC ), and more. Taiwan Semiconductor Manufacturing Company's ( TSM ) quarterly results will signal AI demand, and Netflix ( NFLX ) and Dow component UnitedHealth ( UNH ) will also report.