Micron Technology reached an all-time intraday high of $666.59 on May 6, with the stock surging roughly 11% on the session and extending gains in after-hours trading to move above $660. The move pushed the company’s market capitalization past $700 billion for the first time, placing Micron among the top ten most valuable technology companies in the United States. The stock is now up approximately 124% year-to-date and nearly 700% over the trailing twelve months.
The proximate catalyst was a combination of strong sector momentum — AMD and Super Micro Computer both beat first-quarter estimates — and a sustained re-rating driven by Micron’s structural position in high-bandwidth memory. HBM has become the critical bottleneck in AI accelerator supply chains: Nvidia’s Blackwell and upcoming Rubin architectures require it in substantial volumes, and Micron, SK Hynix, and Samsung collectively control the entire addressable market. On its most recent earnings call, Micron management confirmed that HBM capacity is sold out through the end of calendar 2026, with pricing locked in on the vast majority of that volume. That combination of guaranteed revenue and elevated ASPs is unusual for a business historically defined by commodity volatility.
The financial inflection has been sharp. Fiscal Q1 FY2026 revenue came in at $13.64 billion, up 57% year-over-year, with non-GAAP EPS of $4.78 against a $3.94 consensus. GAAP gross margin expanded to 56% from 38% in the prior-year period. The Cloud Memory Business Unit, which houses HBM, posted $5.28 billion in revenue at a 66% gross margin and a 55% operating margin — roughly doubling year-over-year. Management guided Q2 revenue to $18.7 billion with gross margins approaching 68% and EPS of $8.42, which CEO Sanjay Mehrotra characterized as reflecting substantial records across revenue, margin, EPS, and free cash flow simultaneously. The trailing P/E is approximately 21x; the forward multiple on those Q2 numbers compresses the valuation considerably depending on where HBM pricing sustains.
The structural argument rests on capacity physics. Manufacturing HBM requires meaningfully more wafer area per unit than standard DDR5, which means the industry-wide rush to satisfy AI demand has inadvertently tightened conventional memory supply as well. SK Hynix has estimated that memory wafer supply will remain at least 20% short of aggregate demand through 2030. That crowding-out effect is already showing up in Micron’s margin profile across the full product portfolio, not only in HBM. Management has committed approximately $20 to $25 billion in capital expenditure for fiscal 2026, a figure that signals confidence in demand durability but also introduces execution risk if the cycle turns. Data centers are currently consuming an estimated 70% of global memory output, leaving constrained supply for the recovering smartphone and PC segments.
The bull case from several sell-side analysts now extends well beyond current prices. Mizuho raised its price target to $740 following the record session. Melius Research initiated with a buy. At least one Seeking Alpha contributor has published a framework projecting a path to $1,500, predicated on continued HBM pricing power and a multi-year supply shortfall. The bear case is the standard memory cycle objection: Samsung and SK Hynix are expanding HBM capacity aggressively, hyperscaler AI capital expenditure commitments could normalize in late 2027, and Micron’s historical pattern of margin compression during oversupply phases has been severe. The trailing P/E at current prices assumes that peak earnings are not, in fact, peak earnings — a premise the market is willing to test.
The next meaningful data point is Micron’s fiscal Q3 earnings report, scheduled for June 25. Investors will focus on HBM pricing commentary, the status of HBM4 qualification with Nvidia, and wafer capacity guidance into 2027. HBM4 is already in customer sampling; Micron’s specifications — 11 Gbps data transfer speeds and bandwidth exceeding 2.8 terabytes per second — reportedly exceed current JEDEC standards, which, if confirmed at scale, would sharpen the competitive differentiation against Samsung. Whether that technological edge sustains through the next product generation is the variable the current valuation is implicitly pricing with unusual confidence.