Micron

All three major memory chipmakers crossed $1 trillion in market cap within weeks as AI demand, sold-out HBM4 capacity, and a landmark UBS upgrade triggered a historic valuation surge.

Micron Technology posted record fiscal Q2 revenue of 23.9 billion dollars, nearly tripling year over year on surging AI memory demand, while guiding fiscal Q3 to 33.5 billion dollars -- a single quarter that would exceed its entire annual revenue through fiscal 2024.

Samsung, SK Hynix, and Micron have all confirmed high-volume HBM4 production for NVIDIA's Vera Rubin platform at GTC 2026, with 12-layer stacks delivering 2.8 TB/s bandwidth and 16-layer samples already shipping to customers.