Stocks tumbled on Friday after a sell-off in technology shares amid growing investor unease around the eye-popping spending on artificial intelligence and signs of increasing competition from China.
The tech-focused Nasdaq fell 1.2 percent and the S&P 500, a broader index of companies, fell a little over a half percent. U.S. tech giants Alphabet and Meta declined 2 to 4 percent. SpaceX, Elon Musk’s rocket and A.I. company, fell 4 percent. SpaceX this week briefly dropped below the $135 price when the company went public last month.
On Friday, the Chinese A.I. company Moonshot released a new model, Kimi K3, that it claimed operated at the same level as models from American giants like Anthropic and OpenAI. Kimi K3 is even more powerful than GLM-5.2, performing just below Fable, according to benchmarks run by Vals AI, a company that evaluates the performance of the latest A.I. technologies. It performs better than OpenAI’s leading model, GPT-5.6 Sol, said Vals AI chief executive Rayan Krishnan.
Kimi K3 also arrives as the Trump administration is leaning toward regulating the technology and many Silicon Valley executives begin to support such regulation, saying that the leading technologies can drive malicious cyberattacks and potentially help build biological weapons.
This is in stark contrast to how the Chinese continue to approach similar technologies, choosing to open-source even their most powerful systems so that anyone can use and modify them. Moonshot plans to open-source the new Kimi K3 model in late July.
Moonshot’s announcement sent stocks of rival Chinese A.I. companies lower.
Investors have begun to raise questions about whether the vast amounts of money, much of it borrowed, that is being spent on artificial intelligence will bear the expected returns. Companies are investing billions in A.I. infrastructure like data centers and factories to meet ever-increasing demand for chips.
Excitement over A.I. technology, its rapid pace of improvement and its world-changing possibilities have led to dizzying rally in tech stocks and staggering valuations.
But skepticism is growing over the potential for revenue growth that matches the enormous spending by A.I. giants.
Adding to concerns about the risks facing markets on Friday were renewed strikes between the United States and Iran. The passage of ships through the Strait of Hormuz, a vital waterway for the trade in energy and related products, have again pushed up oil prices and led to concern over rising inflation. Brent crude, the global oil benchmark, was trading above $86 a barrel on Friday.
Earlier, stocks tumbled across Asia led by a plunge in technology shares.
“A drawn-out conflagration in the Middle East would also jeopardize A.I. spending if it were to disrupt natural gas and helium supplies from the region, which are important inputs for semiconductor and other electronics production in Asia,” Bernard Yaros, lead U.S. economist at Oxford Economics, said in a research note.
Taiwan’s Taiex index fell 6.5 percent, a day after the chip-making giant Taiwan Semiconductor Manufacturing Company announced an extra $100 billion investment on operations in the United States. Shares in TSMC fell more than 7 percent on Friday.
Analysts at BNY, a New York bank, said in a report that Taiwanese stocks saw a record level of selling by foreign investors on Friday. They cited a reassessment by investors of the valuations of the biggest tech companies and “fiercer” competition from Chinese companies, but held back from projecting a deeper gloom.
“This is not the A.I. or semiconductor growth story collapsing,” they wrote.
Japan’s Nikkei 225 was down more than 4 percent. The KOSPI index in South Korea, a bellwether of A.I. investments, is up more than 60 percent this year but has had drastic daily rises and falls. The country’s markets were closed on Friday for a holiday.
In Europe, the Stoxx 600, an index that tracks the region’s largest companies, fell 0.8 percent. Germany’s DAX index slid 0.7 percent. Shares in the Dutch powerhouse ASML, which makes equipment crucial to chip manufacturing, were down more than 4 percent.
The Philadelphia Semiconductor index, which tracks semiconductor companies, was down 5 percent on Friday and off its high in June.
Cade Metz contributed reporting.
