Stock markets worldwide drop from records as worries about oil prices rattle the bond market

Technology stocks tumbled in a sharp turnaround from their meteoric rises for much of the year, which had carried markets worldwide to records but also raised criticism that they had gone too far.

Nvidia, the stock that quickly became the face of the AI revolution, dropped 2.9% and was the heaviest weight on the S&P 500. It had come into the day with a gain of more than 26% for the year so far.

Applied Materials fell 0.6% even though it reported stronger profit growth for the latest quarter than analysts expected, thanks to the global build out of AI. The company, whose products help make chips and displays, came into the day with a gain of more than 70% for the year so far.

“To us, it looks like markets have pushed into overbought territory,” according to Brian Jacobsen, chief economic strategist at Annex Wealth Management. He said the strong corporate profits and durable U.S. economy that launched U.S. stocks to records remain intact, but “the path is unlikely to be smooth. Periods like this call for discipline more than hope.”

In the meantime, rising oil prices are raising the pressure after already worsening inflation by more than economists had feared. The war with Iran is continuing, and the Strait of Hormuz remains shut to oil tankers, which is preventing them from delivering crude to customers worldwide and driving up oil’s price.

The price for a barrel of Brent crude oil, the international standard, rose 3% to $108.87 and is well above its level of roughly $70 from before the war.

Many big U.S. companies have been saying their customers have been able to keep spending on their products and services despite having to pay higher prices for gasoline. But U.S. households have also been telling surveys they’re feeling discouraged about the economy and the pressures building on them because of the war and tariffs.

The worries were most clear Friday in the bond market, where Treasury yields climbed. The yield on the 10-year Treasury rose to 4.58% from 4.47% late Thursday. That’s a notable move for the bond market, and it’s well above its 3.97% level from before the war. The yield on the 30-year Treasury is near its highest level since 2023 after breaking above 5%.

Higher yields can make mortgages and other kinds of loans going to U.S. households and businesses more expensive, which slows the economy. They also tend to push downward on prices for stocks and all kinds of other investments.

Stocks of smaller companies had some of Friday’s sharpest drops. Many of them need to borrow cash to grow, which means higher borrowing costs can hurt them more than their big rivals. The Russell 2000 index of the smallest U.S. stocks fell 2%, more than double the S&P 500’s loss.

Yields have been climbing since the war on worries about higher inflation and how it may tie the Federal Reserve’s hands when it comes to short-term interest rates. Not only have traders abandoned virtually all expectations that the Fed will resume its cuts to interest rates this year, they’ve been building some bets that it may even hike rates in 2026, according to data from CME Group.

A couple of reports on the U.S. economy that came in better than expected also helped to lift yields. One said U.S. industrial production improved by more last month than economists expected, while another said manufacturing in New York state is expanding at a faster rate.

In stock markets abroad, indexes fell sharply across Europe and Asia.

South Korea’s Kospi dropped 6.1% for one of the biggest moves. It had been reaching records this year because of the influence of AI beneficiaries like SK Hynix. But it quickly reversed momentum Friday after briefly topping the 8,000 level for the first time.

Some on Wall Street have been warning about a possible break in momentum for tech stocks in general and AI winners in particular.

“If nothing else this should be a ‘shot across the bow’ for how volatility works both ways,” according to Jonathan Krinsky, chief market technician at BTIG.

AP Business Writer Chan Ho-him contributed.