Samsung, SK Hynix, and Micron control 90% of global DRAM market; all three report record AI memory demand driving supply stress into 2027.

Three companies control virtually all of the world's DRAM memory chips. As of Q1 2026, Samsung, SK Hynix, and Micron collectively hold between 90% and 95% of global DRAM market share, a concentration that Counterpoint Research projects will persist through at least 2027. Samsung leads with 38% of the market, SK Hynix holds 29%, and Micron rounds out the trio at 22%—leaving roughly a dime on the dollar for every other memory chipmaker on Earth combined.

The concentration is even starker in the high-bandwidth memory (HBM) segment. SK Hynix dominates with approximately 58% market share, Micron sits at around 23%, and Samsung, despite leading overall DRAM, trails in HBM with roughly 21%.

Samsung's April 2026 earnings report flagged significant shortages in memory products, with the company's memory chief indicating that supply constraints are expected to continue through at least 2027. Customers are now reserving HBM supplies years in advance.

These supply dynamics have drawn regulatory scrutiny. A proposed class-action lawsuit filed in June 2026 in California federal court accuses Samsung, SK Hynix, and Micron of coordinating a deliberate shift in production away from conventional DRAM—such as DDR3 and DDR4—toward the higher-margin HBM products. The lawsuit claims conventional DRAM prices have surged approximately 700% over the past four years. This is not the first time these manufacturers have faced such allegations: Samsung, Hynix, and Micron were caught in a price-fixing scandal in the mid-2000s that resulted in billions in fines.

The HBM shortage carries particular weight for GPU rental and decentralized compute narratives in crypto. When NVIDIA cannot source enough HBM to build H100s and B200s, every downstream participant feels the strain, including the decentralized alternatives that crypto platforms are developing.

If the court finds evidence of coordinated supply manipulation, potential remedies could include forced production quotas, fines, or structural changes that reshape the competitive landscape. China's CXMT has attempted to scale domestic memory production, but export controls and technological gaps have kept its efforts marginal thus far.