Micron Technology

What it is

Micron Technology is a US manufacturer of DRAM (Dynamic Random Access Memory), NAND flash, and High Bandwidth Memory (HBM) headquartered in Boise, Idaho. It is the only major American company in the global commodity memory industry. Micron trades on Nasdaq as MU and competes directly with South Korea's Samsung Electronics and SK Hynix, together forming a "Big Three" that controls roughly 95% of global DRAM supply. As of early 2026, Micron held around 21% of the fast-growing HBM market, where demand from AI accelerators has made memory the most strategically contested link in the chip supply chain.

History

Micron began as a four-person semiconductor design firm working out of the basement of a Boise dental office. Ward Parkinson, Joe Parkinson, Dennis Wilson, and Doug Pitman founded it on October 5, 1978. Engineers delivered the world's smallest 64K DRAM chip and began high-volume manufacturing in 1981. The company went public on Nasdaq in 1984, listing on the NYSE in 1990 under the ticker MU.

Decades of consolidation expanded its footprint: Micron acquired Texas Instruments' global memory operations in 1998, formed a NAND flash joint venture with Intel (IM Flash Technologies) in 2005, and absorbed Japan's Elpida Memory in 2013, a bankruptcy driven partly by yen-denominated cost structures collapsing against Korean won pricing. It acquired Inotera Memories in Taiwan in 2016. By 2025 Micron had accumulated more than 60,000 lifetime patents, spanning DRAM cell architecture, NAND stacking, and memory packaging.

Current state

Micron's fiscal Q3 2026 (quarter ending May 28, 2026) was the largest quarter in company history. Revenue reached US$41.46 billion, up 346% year-on-year from US$9.30 billion, with non-GAAP gross margins of 84.9%, a figure that exceeded Nvidia's for the same period. The driver is HBM, the stacked-memory architecture that AI accelerators require for bandwidth-intensive model inference and training. Micron's HBM4 product, built on 1-beta DRAM technology in 12-high stacks at 36GB capacity, runs roughly 30% more power-efficiently than competing products, a key differentiator in data-centre deployments. HBM supply is fully committed through 2026 and into 2027.

Fourteen of sixteen Strategic Customer Agreements carry cumulative minimum revenue commitments of approximately US$100 billion over their remaining terms. Among them is a deal to supply memory and storage to Anthropic, paired with equity participation in Anthropic's Series H fundraising round. Q4 FY2026 guidance is US$49-51 billion. Capital expenditure for FY2026 is projected above US$25 billion, with FY2027 capex expected to step up by more than US$10 billion year-on-year as Micron expands HBM and DRAM capacity. The record results, covered in 美光史上最强季报：HBM售罄，毛利率接近81%, lifted global semiconductor equities and contributed to the moves in 韩综指逼近9000点，日经首破70000点，AI内存热潮推动亚洲市场创历史纪录. Memory-price tightening from HBM capacity reallocation has fed upstream cost pressure at consumer-electronics assemblers, including the pass-through tracked in 苹果因AI内存需求推高零部件成本至历史高位而上调MacBook和iPad价格.

Relationships

Micron's most consequential commercial relationship is with Nvidia, whose GPU platforms anchor HBM demand. The Nvidia certifies all three memory makers for Vera Rubin HBM4, SK Hynix takes the lion's share cycle has given Micron's HBM4 roadmap a multi-year structural floor. Samsung and SK Hynix are simultaneously competitors and co-shapers of market structure: their collective pricing discipline, combined with constrained supply, keeps HBM margins elevated across all three suppliers.

China is the most significant risk vector. The China opens DRAM antitrust probe into Samsung, SK Hynix and Micron as CXMT rises investigation targets Micron, Samsung, and SK Hynix concurrently, with potential fines reported at up to US$2.5 billion. A separate 2023 Chinese government cybersecurity review effectively barred Micron from critical-information-infrastructure procurement in mainland China, which Micron has not challenged. Domestic Chinese competitor CXMT is scaling DDR5 and LPDDR capacity, pursuing an IPO on the Shanghai STAR Market targeting approximately US$4.2 billion.

What to watch

HBM4E, built on 1-gamma DRAM technology, is in development at Micron, with volume production targeted for calendar 2027. The outcome of China's antitrust probe, expected later in 2026, will determine whether fines are imposed and whether further market-access restrictions follow. CXMT's IPO and capacity ramp will determine how quickly a fourth major DRAM supplier displaces incumbents in the Chinese market. Micron's greenfield fab in Clay, New York, backed by US CHIPS and Science Act funding, is the largest domestic semiconductor construction project in the United States in decades, and its timeline will shape whether Micron can hold HBM share above 20% as Samsung and SK Hynix ramp HBM4 and HBM4E through 2027.