Advanced Micro Devices has crossed the $1 trillion market capitalization milestone for the first time, as investors continue to bet on strong demand for artificial intelligence computing and the chipmaker’s expanding role in the AI infrastructure market.
AMD shares rose as much as 9.6% on Sept. 21, reaching a record $613.31, pushing the Santa Clara, California-based semiconductor company above the $1 trillion valuation threshold. The company became the fourth U.S. chipmaker to reach the milestone, following Nvidia, Broadcom and Micron
The milestone comes after a sharp rally in AMD shares. Reuters reported that the stock had gained about 185% in 2026, significantly outperforming the Nasdaq’s 15.8% gain during the same period. The rally has placed AMD among the strongest-performing companies in the S&P 500 this year.
AMD emerges as Nvidia’s closest GPU rival
AMD has increasingly positioned itself as the principal U.S. challenger to Nvidia in the market for graphics processing units used in artificial intelligence applications.
The company has also expanded beyond selling individual chips. Its strategy now includes complete AI computing systems that combine processors, networking equipment and related hardware, bringing AMD into more direct competition with Nvidia’s broader AI infrastructure offerings.
READ: AMD CEO dismisses AI spending concerns, projects $1 trillion data center market by 2030 (November 12, 2025)
AMD is benefiting from another part of the AI infrastructure boom as well. Growing demand for central processing units used alongside graphics processors in servers handling AI inference has helped the company gain market share from Intel, according to Reuters.
The shift is significant because AI computing increasingly requires an interconnected combination of GPUs, CPUs, networking equipment and other components rather than a standalone accelerator chip.
AI spending drives renewed chip rally
AMD’s $1 trillion milestone came during a broader rally in semiconductor stocks.
Intel shares jumped around 11.8% on Sept. 21, while Qualcomm gained about 4.5%. The PHLX Semiconductor Index also climbed 2.7% to its highest level in more than a month, according to Reuters.
The rally reflects renewed investor interest in AI-related stocks after concerns lately about the scale of spending by major technology companies and whether the enormous investment in AI infrastructure would generate sufficient returns.
Thomas Hayes, chairman at Great Hill Capital, told Reuters that money was moving back into the AI trade. He said investors increasingly viewed AI as an area that could continue to support growth even during an economic slowdown.
AMD’s valuation reflects high expectations
AMD’s rise has not been without challenges.
The company forecast quarterly revenue above Wall Street expectations last month, but the outlook still fell short of some elevated investor expectations. The stock nevertheless continued its advance, highlighting how strongly investors are pricing in AMD’s future position in AI computing.
READ: AMD, Department of Energy enter into $1 billion partnership for AI supercomputers (October 29, 2025)
Reuters reported that AMD was trading at roughly 41 times its 12-month forward earnings on Sept. 21. That was below its 10-year average of about 44 times, but substantially above Nvidia’s recent forward earnings multiple of about 16.3 times.
The figures show the extent of expectations surrounding AMD’s AI growth. Investors are valuing the company not only on its existing semiconductor business but also on its potential to capture a larger share of the rapidly expanding AI infrastructure market.
AMD joins an elite chipmaker group
AMD’s entry into the trillion-dollar club underscores the scale of the semiconductor industry’s transformation around AI.
Nvidia crossed the $1 trillion valuation mark in 2023 and has since become the world’s most valuable company, with a market capitalization of more than $5 trillion, according to Reuters. Broadcom and Micron are the other U.S. chipmakers that have crossed the same threshold.
For AMD, however, the milestone represents more than a market capitalization record. It reflects the company’s transition from a major CPU and GPU supplier into a broader competitor in AI computing infrastructure.
The next test for AMD will be whether growing AI demand translates into sustained revenue and earnings growth as competition intensifies and technology companies continue investing billions of dollars in data centers and AI systems.