NEW YORK — Micron Technology moved against the grain Tuesday. While most chip stocks retreated ahead of NVIDIA’s earnings, Micron added $2.28 to close at $101.47, a 2.3% gain that reflected a simple and powerful story: the company cannot make its AI memory chips fast enough to meet demand.
HBM3E — high-bandwidth memory in its fourth generation — is the component that connects NVIDIA’s Blackwell and earlier Hopper GPUs to the memory capacity they need to run large AI models. A single H200 GPU uses six stacks of HBM3E. A Blackwell B200 uses eight stacks. At the scale of hyperscale data center deployments — where customers like Microsoft, Google, and Amazon are ordering tens of thousands of GPUs at a time — the demand for HBM has become a constraint on the AI buildout itself.
Micron confirmed in its most recent earnings call in late June that its HBM3E allocation for calendar year 2026 was fully committed, and that advance orders extending through mid-2027 had already been secured. CEO Sanjay Mehrotra said the company was expanding HBM production at its Hiroshima, Japan facility and evaluating a greenfield HBM expansion in the United States, potentially qualifying for additional CHIPS Act support.
The dollar figures are significant. Micron’s total revenue in fiscal Q3 2026, reported in late June, reached $9.79 billion — up 82% year-over-year. HBM specifically contributed approximately $1.3 billion in that quarter, a number that the company said was accelerating. Wall Street models now peg HBM revenue at $3.5 billion to $4 billion for Micron’s fiscal year 2027, which begins September 1.
The broader DRAM market — standard memory used in PCs, servers, and mobile devices — is also recovering from the inventory glut that depressed memory prices through most of 2023 and 2024. DRAM spot prices have risen approximately 34% since January 2026, according to DRAMeXchange data. The improvement reflects genuine demand recovery in the PC and smartphone markets, combined with supply discipline from the three major DRAM producers: Micron, Samsung, and SK Hynix.
SK Hynix is currently the leading HBM supplier, holding what analysts estimate is approximately 53% of HBM3E market share, driven by its longstanding supply relationship with NVIDIA. Micron holds an estimated 20% share and is growing. Samsung, which has faced technical qualification challenges with its HBM product, holds the remainder — though Samsung has indicated it expects to resolve its qualification issues with NVIDIA by the end of 2026.
NVIDIA’s earnings Wednesday evening are as relevant to Micron as they are to any company in the semiconductor ecosystem. If NVIDIA confirms that Blackwell GPU demand remains constrained by supply rather than by customer demand, the read-through for HBM memory is straightforwardly positive. Every additional NVIDIA GPU sold requires HBM that Micron, SK Hynix, or Samsung must produce.
The NAND flash business — storage memory used in solid-state drives — is Micron’s second major product line and is recovering more slowly than DRAM. NAND prices remain below their 2022 peaks, and the market is oversupplied relative to current end-user demand, though the gap is narrowing. Micron’s NAND revenue in fiscal Q3 was $2.1 billion, up 45% year-over-year but still below the company’s target gross margins for that product line.
At $101.47, Micron trades at approximately 14 times calendar year 2027 earnings consensus — a valuation that is low by technology sector standards and reflects the cyclicality discount that memory stocks have historically carried. Memory companies earn spectacular margins at cycle peaks and minimal or negative margins at cycle troughs, making the trailing multiple less meaningful than investors’ assessment of where the current cycle sits. The HBM product line, because it is supply-constrained and prices are negotiated under long-term contracts rather than on spot markets, introduces a structural margin stability that the DRAM commodity business has never had.
What the market does not know: Micron’s precise HBM contract pricing and margins, which the company does not disclose at the product level. The $1.3 billion quarterly HBM revenue figure is confirmed. The margin on that revenue — which most analysts model as materially above Micron’s blended gross margin — is an estimate. If HBM margins are lower than consensus models assume, the fiscal 2027 earnings outlook is weaker than it appears.
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