Advanced Micro Devices (AMD) reached a $1 trillion market capitalization for the first time on September 21, 2026. The stock surged nearly 10% to a new all-time high. Shares reached an intraday peak of over $615 during the session.
AMD is now one of a few U.S. chipmakers to achieve a trillion-dollar valuation. A broad rally in AI and semiconductor stocks supported the milestone.
The surge reflects investor confidence in the company's data center business. Data center revenue more than doubled year-over-year in the second quarter.