Advanced Micro Devices (AMD) briefly exceeded a $1 trillion market capitalization on September 21, 2026, marking a significant milestone for the company. This achievement places AMD among a select group of chipmakers to reach this valuation, fueled by investor optimism surrounding its expanding involvement in artificial intelligence computing. The company's shares climbed 9% to $610, after touching an all-time high of $613.92, pushing its valuation just over $1 trillion.
AMD's rally is attributed to its accelerated AI product launches and its strategic move to offer complete systems, including processors, networking gear, and related hardware, to better compete with Nvidia. The company is also benefiting from increased demand for central processing units (CPUs) used alongside graphics processors in servers for inference workloads, allowing it to gain market share from Intel.
This surge was part of a broader chip sector rally, with Intel jumping 11% and Qualcomm rising 4.1%, pushing the overall chips index up 2.6% to a one-month high. The positive momentum across chip stocks was largely sparked by Meta Platforms' new Muse AI agent, which signaled a faster-than-expected ramp-up in inference workloads and a potential increase in CPU footprint per unit of compute. This repricing of the CPU demand thesis helped AMD secure its place as the fourth U.S. chipmaker to reach a $1 trillion valuation, following Nvidia, Broadcom, and Micron. Nvidia, for comparison, crossed this threshold in 2023 and is now valued at over $5 trillion.
