Technology thesis · Semiconductors & Chips
high conviction matureDRAM
DRAM is experiencing an AI-driven supercycle led by HBM demand; the three remaining manufacturers (Samsung, SK Hynix, Micron) operate in a stable oligopoly.
Position maintained continuously · last reviewed May 7, 2026
The thesis
Core thesis
The DRAM industry consolidated to three players after decades of brutal competition. AI demand (HBM) is the growth driver. Conventional DRAM growth is modest; HBM grows 60%+ annually. China's CXMT is attempting entry but export controls limit access to advanced equipment. The oligopoly structure means rational pricing and sustained margins — a stark contrast to the commodity cycles of the past.
State of the art (2026)
The 2026 memory supercycle is real and HBM-led. NVIDIA certified all three makers — SK hynix, Samsung and Micron — for Vera Rubin HBM4 supply on 5 June 2026, and HBM4 entered mass production in February. SK hynix holds roughly 60–70% of Rubin HBM4 volume and is already sampling 12-high HBM4E; it has sold out its entire 2026 HBM allocation, as have Micron and Samsung. The pivot to HBM has starved commodity supply: Samsung guided Q1 2026 memory ASPs up about 146% year on year, with SK hynix DRAM ASPs up in the mid-60s. By share, Samsung (~38%) still leads conventional DRAM ahead of SK hynix (~29%). The open question is whether HBM pricing corrects once 2027 capacity lands.
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Signal stack
Evidence stacked leading → lagging
Technology-native KPIs
Metrics that predict trajectory, tracked over time
Landscape map
Who builds what — and who depends on whom
Catalyst calendar
Dated events that will move the position
Technology roadmap
Milestones on the path to maturity
Watchlists
Companies, people and papers — each with a remove-by condition
Decision frameworks
The same call, framed for your desk
Thesis changelog
When our view changed, and why
Change our mind
3 disconfirming conditions
The rest is inside
You've read the verdict. The file is much deeper.
The full signal stack, technology-native KPIs tracked over time, the landscape of who depends on whom, the dated catalyst calendar, decision frameworks for every desk, live watchlists and the changelog of every time our call on DRAM has changed — all live inside CanaryIQ.