AMD tops $1 trillion in market value for the first time as AI sentiment lifts chip stocks
AMD closed up nearly 10% to cross $1 trillion on September 21; Intel rose over 12% the same day, a sentiment-driven sector move with no new orders disclosed.
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AMD rose nearly 10% to close at $615.52 on September 21, pushing its market capitalization above $1 trillion for the first time.
The stock is up about 30% over the past 30 days. Intel shares rose more than 12% the same day, and Reuters noted the move was a broad rally in AI-adjacent hardware stocks rather than an AMD-specific event.
Fast Company attributes the surge to investor optimism about AI infrastructure spending, citing the popularity of Meta's new AI app Muse. That causal story is the article's interpretation; AMD disclosed no new orders or results that day.