This article was first published on GuruFocus.
Micron Technology (NASDAQ:MU) shares fell 1.30% in pre-market trading on Monday after reports that Samsung Electronics plans to start production of next-generation high-bandwidth memory HBM4 as early as next month, with the goal of supplying Nvidia (NASDAQ:NVDA). Samsung has made progress on qualifications, a necessary step for future Nvidia platform consideration.
The headline is less important for Micron Technology’s near-term earnings and more important for what it implies about the next AI hardware cycle. According to Barron’s, HBM is one of the most tight and profitable components in the AI stack, and Micron’s HBM output in 2026 has attracted much attention. This limits any direct financial impact. Rather, the stock’s sensitivity reflects investors’ focus on who controls incremental supply as Nvidia transitions to its next architecture, where HBM4 is expected to play a larger role.
Micron said it has begun sampling its HBM4 products at speeds exceeding 11 gigabits per second and expects to ramp up production next year. Samsung’s massive re-entry poses different risks. Margin pressure and negotiating leverage. With multiple qualified suppliers, Nvidia gains greater flexibility in pricing and allocation, and energized investors are increasingly considering valuations for the entire AI memory complex.