AMD Crosses $1 Trillion Market Cap on AI Rally

AMD crossed a $1 trillion market capitalization for the first time in its 57-year history on Monday, with shares touching an intraday record of $613.92 before settling into a close that capped an 18-day run in which the company added roughly $284 billion in value, a gain of about 40%.

The milestone makes AMD the fourth U.S. chipmaker to reach 13-figure territory, following Nvidia, which first crossed the threshold in 2023 and now sits above $5 trillion, Broadcom, and Micron Technology. Over the past decade, AMD stock is up more than 30,400%, meaning a $10,000 investment made in 2016 would be worth roughly $3.05 million today.

The move was part of a broader rush into chip stocks. The Philadelphia Semiconductor Index, which tracks the industry’s largest names, jumped more than 2% to its highest level in over a month. Arm climbed more than 8%, Micron rose nearly 5% and Qualcomm added close to 2%, as investors piled back into hardware names tied to the buildout of AI data centers.

AMD’s own numbers help explain the enthusiasm. Data center revenue rose 34% quarter over quarter to $4.3 billion, with operating income in that segment up sharply year over year on rising adoption of its MI300 accelerators. The company has already begun shipping its next-generation Instinct MI400 series and Helios rack-scale AI systems, with the flagship MI455X chip specified at 40 petaflops of FP4 compute and 432 gigabytes of HBM4 memory. Earlier this year, AMD signed a multi-year GPU supply agreement with OpenAI that includes a warrant letting the AI lab acquire up to 10% of AMD’s stock if certain delivery and performance milestones are met.

A Broader Tech Rally

AMD’s breakout came inside a session where the Nasdaq extended its gains to more than 2% and the S&P 500 alone added roughly $1 trillion in market value in a single day, putting the index within about 1% of its all-time high. Hedge funds recorded their largest weekly purchase of U.S. equities in five weeks, driven by short covering in index futures and ETFs alongside fresh long positions concentrated in information technology names. The rally followed comments from President Trump, who told reporters that AI would prove “bigger than the Industrial Revolution, or the internet,” and that the U.S. intends to keep its lead over China in the technology.

The enthusiasm for AI infrastructure spending isn’t confined to chipmakers. Accenture shares jumped 7% in premarket trading after the consulting firm announced a five-year, $1 billion AI safety partnership with Anthropic to build a team of “embedded evaluators” who will stress-test AI models before deployment, a sign that the AI buildout is now pulling in services firms alongside hardware vendors. Big tech’s expanding footprint extends into payments too: Apple and Google have both begun posting stablecoin-related job listings as they position for a slice of the payments infrastructure AI-driven commerce is expected to reshape.

Crypto assets caught a piece of the same risk-on mood. Bitcoin briefly reclaimed a top-15 spot among the world’s most valuable assets from Tesla earlier this month as spot ETF inflows picked up, underscoring how digital assets and mega-cap tech stocks have increasingly moved in tandem this cycle. Traders drew a direct parallel between Monday’s chip-stock surge and crypto’s own short squeezes this quarter: when bitcoin broke above $80,000 and forced a wave of short liquidations, the mechanics looked much like what unfolded in AMD and its semiconductor peers on Monday, price momentum forcing bearish positioning to unwind and adding fuel to the move.

Not every signal is pointing in the same direction. Market breadth has been quietly deteriorating even as headline indexes climb: the share of S&P 500 stocks trading above their 50-day moving average has fallen to 44%, the lowest since April and down 14 percentage points since mid-August. That divergence, a narrow band of mega-cap winners driving the bulk of the gains while the broader market lags, is the same pattern that preceded pullbacks earlier in AMD’s own AI-fueled run, and it leaves Monday’s trillion-dollar milestone resting on a rally that, for now, still depends on a handful of stocks doing most of the work.