South Korea’s SK Hynix dominates high-bandwidth memory for AI, outpacing Micron and Sandisk in market share and growth.
SK Hynix has secured a dominant 56.4% share of the high-bandwidth memory (HBM) market in Q1 2026, according to market data. The surge in AI-driven demand for memory chips has tightened supply, boosting prices and profits for manufacturers.
Micron and Sandisk, key competitors, have seen significant stock gains, with Micron up 715% over the past year and Sandisk nearing 3,000% returns. Both firms focus on DRAM and NAND flash, but SK Hynix’s leadership in HBM positions it as a critical player in AI infrastructure.
The AI memory supercycle, driven by hyperscalers and data center expansion, continues to fuel growth in the semiconductor sector. SK Hynix’s market share underscores its competitive edge in high-growth segments.