Micron's HBM4 memory chip is ramping at twice the speed of HBM3E, with full 2026 allocation and fiscal Q3 results that crushed estimates by wide margins.

Micron posted $41bn in Q3 revenue, quadrupling year-over-year, as HBM4 chips for Nvidia and Google drove gross margins past 81 percent for the first time.

Micron's quarterly earnings report follows a 700% surge in the memory maker's stock price over the past year.