Overview
- Micron briefly topped a $1 trillion market value after a roughly 19% intraday jump on Tuesday, May 26, following a sharp analyst upgrade that sent heavy buying into the stock.
- UBS analyst Timothy Arcuri more than tripled Micron’s price target to $1,625, a move cited by multiple outlets as the immediate catalyst for the company’s surge.
- SK Hynix crossed the $1 trillion mark on Wednesday, May 27, completing a rapid sequence in which Samsung, Micron and SK Hynix each reached trillion-dollar valuations within weeks.
- The rally reflects tight supply for high-bandwidth memory (HBM) — the fast, stacked memory used next to AI accelerators — with HBM capacity reported sold out through 2026 and memory prices rising sharply in recent quarters.
- Analysts warn the memory business remains cyclical and vulnerable to downside if competitors ramp HBM output or AI data-center spending slows, making upcoming company earnings and any capacity announcements key near-term signals.