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Arm and AMD Defy March Sell-Off on AI Workload Shift

Investors see new demand from agentic AI that favors more CPU power.

Overview

  • The S&P 500 fell about 5% in March as higher oil prices and tensions in the Middle East raised recession fears.
  • AMD still gained 2.5% for the month, with Arm shares also finishing higher despite the broader drop.
  • Coverage links the strength to agentic AI, which leans on CPUs for step-by-step decisions, tool calls, and memory control rather than only raw GPU power.
  • AMD says its MI450 GPUs will start shipping in the second half of 2026, with the company touting large performance gains versus its prior chips.
  • Helios, AMD’s rack that pairs MI450 with memory and software, is marketed as offering 50% more memory than Nvidia’s upcoming Vera Rubin system, and early MI450 customers reportedly include Meta and OpenAI planning multi‑gigawatt rollouts over several years.