A small group of seven companies, including Alphabet, Amazon, Apple, Meta Platforms, Microsoft, Nvidia and Tesla, have become so dominant that they alone contributed to more than half of the S&P 500’s ...

Markets in South Korea, Shanghai markets and other parts of the region were closed for holidays. Among technology companies in Japan, SoftBank Group Corp. stock extended its losses, plunging 6%.

Tongfu Microelectronics joins CXMT and Wuhan Xinxin in HBM production for Chinese developers of AI processors.

U.S. markets stabilized Tuesday following a wipeout a day earlier when a Chinese AI startup startled markets with its capacity to compete with American tech giants. Futures for the S&P 500 and the ...