Micron Technology crossed a $1 trillion market capitalization this month as its share price rocketed—up more than 227% in 2026 and more than 867% over the past year as of May 28—on a surge of demand for memory used in artificial-intelligence systems.
The rally has forced analysts to reprice the company. UBS analyst Timothy Arcuri raised his price target on the stock from $535 to $1,625, saying he expects investors to begin applying a more “normal” multiple as Micron’s revenue mix shifts. Counterpoint’s market tallies show Micron with roughly 23% of global DRAM revenue and 21% of the HBM market at the end of last year, figures that helped persuade markets the company is moving from niche supplier to central hardware player.
The driver is clear and specific: modern AI training rigs need large amounts of memory that must sit close to GPUs. Micron makes dynamic random-access memory and has been pushing into high-bandwidth memory; in March the company said it had designed a new HBM4 module with 36 gigabytes of 12-Gi memory for Nvidia’s Vera Rubin GPU platform. That product work and the company’s HBM share—which more than doubled from 9% at the end of 2024 to 21% by year-end—are concrete evidence Micron is capitalizing on AI hardware demand.
At the same time, Micron’s management has told investors the expansion in AI is changing where and how memory is consumed. On Micron’s fiscal 2026 second-quarter earnings call in March, CEO Sanjay Mehrotra said data center demand for DRAM and NAND flash is expected to account for about 50% of the industry’s total addressable market for the first time. Mehrotra also warned that DRAM and NAND demand this year will be constrained by supply and that DRAM shipments are projected to grow in the low-20s percentile.
That warning is the story’s friction point. Analysts including Arcuri are banking on tight supply as part of the valuation case: he projects DRAM supply will stay constrained until at least halfway through 2028 and NAND supply until the end of 2027. If capacity additions by other suppliers accelerate sooner than expected, or if AI demand growth slows, the pricing power that helped re-rate Micron could unwind quickly.
Micron’s gains also come on a competitive landscape where it is still behind the two largest suppliers. Counterpoint places Micron behind Samsung and SK Hynix in global DRAM share and behind SK Hynix and Samsung in HBM, even as Micron carves out faster growth in HBM market share than a year ago. That position means market-beating returns have so far depended on both share gains in higher-margin AI memory and an industry-wide supply tightness that keeps prices elevated.
The immediate market test is straightforward: upcoming earnings reports and supplier capital plans. Investors will watch whether Micron can translate product wins—like the HBM4 design for Nvidia—into higher margins and sustained revenue, and whether DRAM and NAND supply remain tight through 2027 and into mid-2028 as some analysts forecast. The single most consequential unanswered question is whether those supply constraints will persist long enough to justify Micron’s new valuation; if they do not, the premium the market has placed on the company will come under pressure.
