Micron stock becomes battleground amid shifting AI narrative

Micron Technology hit a milestone that most chipmakers only dream about. In May 2026, the memory giant’s market cap crossed $1 trillion. By early September, the stock had given back roughly 23% of those gains. The core disagreement is simple: is Micron a fundamentally transformed business riding a decade-long AI wave, or is it the same cyclical memory company that has burned investors before? The numbers that fueled the rally To understand the bull case, start with Micron’s fiscal third quarter of 2026. Revenue came in at $41.46 billion, a 346% increase year-over-year. Adjusted earnings per share hit $25.11, and gross margins climbed to nearly 85%, a record for the company. The source of that pricing power is high-bandwidth memory, or HBM. Standard memory chips move data adequately; HBM moves it fast enough to keep AI accelerators like Nvidia’s H100s and B200s from sitting idle waiting on data. CEO Sanjay Mehrotra stated that AI has “structurally transformed the memory industry,” noting that supply improvements will arrive gradually with no clear timeline for when capacity will actually meet demand. For fiscal Q4 2026, the company guided revenue toward approximately $50 billion, si...