U.S. semiconductor stocks rise as investors return to artificial intelligence infrastructure and computing demand.

SAN FRANCISCO — September 22, 2026 — Advanced Micro Devices has reached a $1 trillion market value for the first time, highlighting renewed investor interest in artificial intelligence and the growing demand for advanced computing hardware.

AMD shares rose sharply on Monday as semiconductor stocks rallied across the U.S. market. Reuters reported that the broader gains were driven by expectations that AI infrastructure spending remains strong despite recent concerns about AI safety and technology valuations.

Other major chip companies also advanced, with Intel and Arm Holdings among the technology stocks posting significant gains. The move helped push the S&P 500 and Nasdaq higher during Monday's trading session.

The AMD milestone comes as technology companies continue investing heavily in AI data centers, processors and computing infrastructure. Demand for high-performance chips has become a central part of the global AI expansion, with semiconductor manufacturers competing to supply cloud providers and other large technology companies.

AMD's rise to the trillion-dollar level puts the company among a small group of major technology businesses valued at more than $1 trillion. The development also shows how closely U.S. semiconductor valuations are now linked to expectations for continued AI investment.