Micron Technology

Micron Technology is a US memory semiconductor manufacturer founded in 1978 and headquartered in Boise, Idaho. It is the only US-headquartered maker of DRAM and high-bandwidth memory (HBM), and the third-largest HBM supplier behind SK Hynix and Samsung. Its role in US AI policy is larger than its market share because it is the domestic anchor of a supply chain otherwise concentrated in South Korea.

Snapshot

Financials and valuation

Historical Micron cycle-peak forward P/Es cited by the same column: 1984 at 15× (the stock took 9 years to surpass that level); 2018 at 5.5×; and 2022 at 9× (the stock halved, then doubled once the loss was priced in) (AI Chip Mania Sows Seeds of Its Own Destruction (Mackintosh, WSJ, May 16 2026)).

Market position

Capital expenditure

Products and role in the AI compute supply chain

Micron's AI-relevant product lines are HBM3E in 8-Hi and 12-Hi stacks, HBM4 in development, DDR5 and LPDDR5X for servers, PCs, and edge devices, and 3D NAND. It qualified HBM3E 8-Hi for the Nvidia H200 in 2024 and expanded to 12-Hi for Blackwell-generation parts. Micron was the last of the three HBM suppliers to enter the market but has gained share from a low base. Its HBM4 roadmap targets 2026–2027 volume to stay competitive with SK Hynix and Samsung.

Micron's 2026 HBM allocation is reported sold out, consistent with the industry-wide HBM crunch (Source: Raw Sources/SemiAnalysis - CoWoS and HBM Supply Chain.md). The company is also a server and edge AI memory supplier through its DDR5 and LPDDR5X lines.

Reporting its June 24, 2026 fiscal third-quarter results, CEO Sanjay Mehrotra cited $22 billion in committed long-term customer agreements amid an AI-driven memory shortage he said he expects to ease only gradually through 2028 (Source: cnbc.com). The forecast, which disclosed the customer commitments to lock in memory supply, drove a roughly 18% share gain on June 25 that briefly carried Micron past Meta and Tesla in market value (Source: reuters.com). Fortune reported the quarter as a 346% revenue surge and a $28.2 billion quarterly profit, with shares rising about 15% to roughly $1,213; the results were credited with halting a week-long AI and technology selloff and lifting NASDAQ and S&P 500 futures (Source: fortune.com).

US reshoring and the CHIPS Act

Micron is a central beneficiary of US semiconductor reshoring. In Boise, it announced a $15B+ memory fab, described as the first new US memory fab in 20 years. In Clay, New York, it announced a potential roughly $100 billion, multi-decade investment in a cluster of up to four fabs, supported by state incentives and federal CHIPS Act funds. It was awarded up to $6.1B in direct CHIPS Act grants, one of the largest allocations, to support the Idaho and New York projects. The reshoring effort is aimed at reducing US AI supply-chain dependence on East Asian memory and aligns with the goals of the AI Action Plan.

Outside the United States, Micron broke ground on July 4, 2026 on a ¥1.5 trillion ($9.3 billion) expansion of its factory in Hiroshima Prefecture in western Japan, which will produce chips including the high-bandwidth memory used in AI processors (Source: japantimes.co.jp).

Geopolitical and regulatory position

In May 2023 the Cyberspace Administration of China (CAC) declared Micron products a national-security risk and barred Chinese critical-infrastructure operators from buying them, the first such move against a US semiconductor firm. Micron's domestic US footprint positions it as the "clean" HBM supplier for defense and sensitive-workload customers where South Korean supply raises questions. Like its Korean competitors, Micron is subject to the October 2024 BIS HBM rule governing China-bound shipments.

Cyclicality and AI-demand debate

James Mackintosh's WSJ Streetwise column "AI Chip Mania Sows Seeds of Its Own Destruction" (May 16, 2026) uses Micron as the empirical anchor for a memory-chip-cyclicality skepticism position (AI Chip Mania Sows Seeds of Its Own Destruction (Mackintosh, WSJ, May 16 2026)). The column notes that Micron recorded its biggest-ever loss three years earlier and is forecast to become the sixth-most-profitable U.S. stock, making just under $100 billion over the following 12 months, more than Meta or Berkshire Hathaway, while spending roughly $150 billion on US fab buildout across New York, Idaho, and Virginia. As of May 2026 Micron's forward P/E was under 10×, making it the S&P's third-cheapest stock by that measure two weeks before the column.

Mackintosh argues that a low Micron forward P/E is consistent with a cycle peak rather than a contrarian bargain, and that AI-bullish investors have historically misread that pattern at three previous cycle peaks: 1984 (15×, with the stock taking 9 years to surpass that level), 2018 (5.5×, where in his phrasing "losses for investors who were fooled into thinking they were buying a bargain were vast"), and 2022 (9×, where the stock halved, then doubled after the loss was priced in). He treats the 2026 sub-10× reading as closer to those peak signatures than to a bargain signature. The risk he identifies as load-bearing for Micron specifically is AI memory-efficiency breakthroughs: Alphabet's March 2026 memory-efficiency research paper triggered a temporary memory-stock selloff that recovered, but further engineering progress is unquantifiable in advance. Mackintosh does not commit to a directional call on Micron.

Mackintosh pairs the column structurally with the May 17 Samsung 45,000-worker memory-plant strike, which he frames as short-run-bullish and long-run-irrelevant in the cycle frame, and with the May 14 Cerebras IPO ($5.55B raised; shares more than doubled), which he cites as evidence of new-entrant pressure in non-memory AI silicon.

Relationships

• depends-on: Semiconductor Supply Chain.
• related: SK Hynix — HBM Leader, Samsung Semiconductor, Nvidia & TSMC — AI Compute Infrastructure, Export Controls (AI), Compute Governance, America's AI Action Plan, AI Race Dynamics.