Why Is Arm Holdings (ARM) Stock Up Today? AGI CPU Launch and $25B Revenue Target Spark 16.4% Surge

Arm Holdings (ARM) shares skyrocketed on March 25, 2026, closing up 16.38% at $157.07. The massive rally follows the company's Arm Everywhere event in San Francisco, where it unveiled its most significant strategic pivot since its founding: moving beyond chip blueprints into producing its own physical silicon.