Chip Companies Rally on AI Infrastructure Demand Surge

Micron, Intel and Advanced Micro Devices saw remarkable gains during the second quarter of 2026, collectively gaining approximately $2 trillion in market capitalization as investors shifted focus from hyperscaler technology companies to semiconductor makers. The rally reflected growing confidence in persistent demand for AI chips and infrastructure, with Micron's shares soaring 240% to add roughly $920 billion in value, Intel jumping 216% for a $480 billion gain, and AMD nearly tripling to contribute $615 billion. The companies benefited from strong earnings reports showing accelerated revenue and expanded profit margins as memory prices rose due to surging demand from AI data centers. This rotation into semiconductor companies from broader hyperscaler stocks represents a shift in how the market views the AI buildout and the companies enabling it.