Micron has cemented its place among the trillion-dollar chipmakers with a blistering 29% rally over the past five trading days, yet the very forces that propelled the stock are now colliding. The surge, fueled by a blockbuster quarter from Dell and a flurry of analyst upgrades, has pushed the shares to €833.10 — more than double their March lows. But just as the company rides the AI memory boom, Samsung has fired a warning shot by shipping samples of its next-generation HBM4E chips, threatening to reshape the competitive landscape.
Dell Technologies provided the immediate spark. The server giant posted earnings per share of $4.86, crushing the consensus estimate of $2.88, while revenue soared 88% to $43.8 billion. Dell’s AI server unit alone generated $16.1 billion in revenue, overtaking the PC division for the first time. Chief Operating Officer Jeff Clarke confirmed that memory chip supply remains “extremely tight,” with customers locking in long-term contracts and Dell passing on higher component costs through price increases. For Micron, the numbers validated the thesis that AI-driven demand for high-bandwidth memory (HBM) is not only real but accelerating.
Wall Street responded swiftly. UBS analyst Timothy Arcuri raised his price target from $535 to $1,625 — then the highest on the Street — arguing that a structural shortage of high-speed memory will persist at least through 2028. Susquehanna followed with a $1,750 target. The upgrades triggered a 19% single-day surge that forced short sellers to cover. Micron’s own fundamentals back the optimism: second-quarter fiscal 2026 revenue hit $23.86 billion (triple the prior year), with operating profit of $13.79 billion. Management projects a record third quarter of $33.5 billion in revenue, a gross margin near 81%, and EPS above $19. That single-quarter forecast exceeds any full-year revenue in the company’s history. All of Micron’s HBM production for 2026 is already sold out, and the next-generation HBM4 line is ramping.
Yet the competitive picture is shifting. Samsung Electronics has begun sampling its 12-layer HBM4E memory, claiming a 20% speed boost and 30% greater capacity over the current HBM4 generation. The chips are built on Samsung’s most advanced DRAM process paired with a 4-nanometer logic base die, and they are aimed at Nvidia’s upcoming “Rubin Ultra” platform. Samsung only started shipping HBM4 samples three months ago; the rapid follow-up suggests an accelerated roadmap. Micron and SK Hynix are not expected to deliver HBM4E samples until the second half of the year, giving Samsung a potentially decisive head start in the qualification cycle.
Should investors sell immediately? Or is it worth buying Micron?
The market share stakes are significant. Counterpoint Research data shows SK Hynix leading global HBM supply with 57%, followed by Samsung at 22% and Micron at 21%. Analysts at KB Securities and Jefferies caution that if Samsung secures qualification for HBM4E with Nvidia, the current pecking order could shift, putting Micron’s hard-won gains at risk.
Technically, the stock looks stretched. The relative strength index stands at 31.4 — a reading that seems counterintuitive after such a sharp advance but reflects the speed of the rally. The current price sits 72% above the 50-day moving average (€483.26), a level that historically signals correction risk. Near-term support is seen at €813 and €617. The next major catalyst is June 24, when Micron reports fiscal third-quarter results. Management has already raised full-year capital expenditure to more than $25 billion — $5 billion above the original plan — underscoring the scale of the bet on AI.
The narrative now splits in two. On one hand, demand is so intense that Micron can sell every chip it makes and still leave customers short. On the other, Samsung’s aggressive move into HBM4E threatens to erode Micron’s position in the market’s most lucrative segment. The upcoming earnings call will be the first test of whether the company can convince investors that its lead in high-bandwidth memory is durable — or whether the trillion-dollar valuation is already pricing in a future that may not unfold as smoothly as the last five trading days suggest.
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