Micron shares jump 7% as HBM supply crunch and AI demand fuel debate over structural shift from cyclical memory business

Micron Technology stock rose 7% in Monday morning trading to around $579, extending a 103% year-to-date gain in 2026 and a 618% gain over the past year. Fiscal Q2 2026 revenue nearly tripled year over year to $23.9 billion with gross margin hitting a company-record 75%, and guidance for fiscal Q3 2026 calls for revenue of roughly $33.5 billion and gross margin of approximately 81%.

The bull case centers on high-bandwidth memory (HBM) — specialized memory used in AI accelerators — becoming a structural asset rather than a cyclical commodity. Micron is the only American HBM supplier in a three-player oligopoly with SK Hynix and Samsung, and can fulfill only 50% to two-thirds of key customer demand in the medium term, with no new HBM supply expected until late 2027.

Skeptics argue memory has been cyclical for 50-plus years and that Samsung and SK Hynix are aggressively expanding HBM capacity. The stock trades at a P/E ratio of 26× following a 600% one-year run, with analyst consensus at $551.40 (39 Buy ratings, 5 Holds, zero Sells) and TIKR's valuation model targeting $664.