[US chip stocks rally collectively, AMD joins the trillion-dollar market cap club]

Published: Sep 22, 2026 10:07 (GMT+8)
Driven by sustained growth in AI demand, chip stocks broadly rose during the US session, with AMD (AMD.O) surging more than 9% intraday to a record high of $613.92, pushing the company's market capitalization past $1 trillion. AMD is regarded as one of the foremost competitors to AI leader Nvidia (NVDA.O) in the graphics processing unit (GPU) market. AMD became the fourth US chipmaker to surpass a $1 trillion market value, following Nvidia, Broadcom (AVGO.O), and Micron Technology (MU.O). Nvidia crossed the $1 trillion mark in 2023 and is now the world's most valuable company, with a market capitalization exceeding $5 trillion. On Monday, most chip stocks rose in tandem. Intel (INTC.O) climbed about 11% intraday, Qualcomm (QCOM.O) gained 4.1%, and the Philadelphia Semiconductor Index advanced 2.6% to a one-month high.

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