AMD shares have crossed $600, bringing the chipmaker within striking distance of a $1 trillion market capitalization after a powerful 2026 rally. The advance has been fueled by demand for AI accelerators (specialized chips for artificial-intelligence workloads) and data-center hardware. AMD’s second-quarter 2026 revenue reached $11.5 billion, up more than 50% from a year earlier, while data-center revenue more than doubled and non-GAAP earnings per share reached $1.66. The stock previously hit an all-time high of $580.91 in July, valuing AMD at roughly $947 billion and ranking it 13th among U.S. companies by market capitalization. On September 18, shares traded around $559.82, with a market capitalization of approximately $914 billion, while intraday prices approached $580 during multiple sessions. AMD has launched the Helios rack-scale AI platform and Instinct MI400 series GPUs, and is working with Microsoft Azure, OpenAI, Anthropic and Meta on Helios deployments. The valuation milestone places AMD among the largest technology companies, although Nvidia remains substantially larger and Broadcom is a major competitor in AI chips and networking. AMD CEO Lisa Su has gained investor credibility through product execution and financial results that met or exceeded guidance, transforming the company from near bankruptcy in 2015 into a business approaching a trillion-dollar valuation. Nvidia’s CUDA software ecosystem remains deeply established in AI research, while Broadcom has built a strong position in custom AI chips for hyperscalers.