Arm’s AI Paradox: $2B Data Center Demand Hits a Supply Wall as ARM Stock Slumps 6% After-Hours

Arm Holdings (ARM) beat fiscal Q4 expectations and touted $2 billion in "agentic AI" chip demand, yet shares reversed a 13% gain to fall 6% after hours. The sell-off was fueled by management's admission of supply constraints and rising R&D costs as the company pivots from designer to silicon producer.