Advanced Micro Devices becomes fourth US chipmaker to reach $1 trillion market value

On September 21, 2026, Advanced Micro Devices (AMD), a US chipmaker, saw its market capitalization surpass $1 trillion for the first time, driven by investor optimism about its role in AI computing. Its shares rose 9.6% to a record high of $613.50. AMD becomes the fourth US chipmaker to reach this milestone, after Nvidia, Broadcom, and Micron. The company has accelerated AI product launches and now offers complete systems, helping it compete with Nvidia. It also benefits from rising demand for CPUs used in AI servers, gaining market share from Intel.