Arista Shift: AMD Gains on 20-25% AI Accelerator Take as NVIDIA Slumps

NVDA and AMD saw divergent performances on February 13, 2026, as Arista Networks (ANET-US) CEO Jayshree Ullal indicated during its earnings call that about 20%–25% of its AI deployments are shifting toward AMD GPUs, down from roughly 99% with NVIDIA a year ago. NVDA fell 2.2% on the day, while AMD rose 0.67%. NVIDIA holds roughly 90% of the AI chip market by unit shipments, valued at over $450B, while AMD’s market cap is about $335B. Arista, which provides Ethernet switches for high-performance computing, is diversifying away from NVIDIA’s networking stack as the latter rolls out its own integration, including a deal with Meta and Oracle earlier this October. The shift reflects growing interest in AMD’s custom AI clusters and Google’s TPUs, signaling NVIDIA’s declining dominance in the AI GPU space.