Big Tech stocks tumble while Micron continues to gain on Q3 earnings

Micron reported a blowout fiscal Q3, with revenue of $37.4B representing nearly 49% year-over-year growth — a dramatic recovery from the memory downcycle that cratered results in 2023. Gross margins expanded to 39.8% and net margins came in at 22.8%, with diluted EPS of $7.59, signaling that HBM (high-bandwidth memory) demand tied to AI infrastructure buildout is translating into real pricing power and volume.

The stock is continuing to gain even as Big Tech broadly sells off, a notable divergence that suggests MU is being read as a cycle/AI story rather than a pure beta-to-tech play. The memory sector has historically been one of the most volatile in semis, and MU's current trajectory reflects a sharp upcycle driven largely by AI accelerator demand — particularly from hyperscalers buying HBM for GPU clusters.

The bull case rests on whether AI capex holds and HBM pricing remains firm. If hyperscalers continue building at pace, MU's forward revenue curve could push significantly higher. The bear case is that DRAM and NAND markets are notoriously cyclical — an inventory overbuild, a slowdown in AI capex, or pricing pressure from Samsung/SK Hynix could compress margins quickly.

With Big Tech broadly under pressure, any rotation out of growth/tech could eventually drag MU lower even if its fundamentals remain intact. The key catalyst to watch is forward guidance and any commentary on HBM pricing visibility into fiscal 2026.