SK Hynix overtakes Samsung as HBM boom reshapes Korea's chip industry - digitimes

SK Hynix briefly overtook Samsung Electronics on June 22 to claim the top spot by common-share market capitalization on South Korea's KOSPI exchange, marking a significant shift in the semiconductor i... Read original →

SK Hynix’s brief market cap lead over Samsung isn’t speculative noise—it’s the valuation crystallization of its HBM dominance. As AI accelerators treat HBM3E/HBM4 as essential infrastructure, SK’s yield leadership in TSV stacking and CoWoS-compatible packaging has secured anchor roles with NVIDIA and AMD. This triggers upstream tooling shifts (e.g., hybrid bonding at Tokyo Electron) and forces cloud providers to reprice memory bandwidth. While U.S.-ROK tech alignment offers near-term supply chain stability, tightening export controls raise compliance overhead and spur Taiwan, China and mainland China to fast-track HBM alternatives. Samsung will counter with aggressive HBM4 ramp and GAA-based DRAM, yet its lag in logic-memory co-design remains a strategic gap. Within 18 months, HBM capacity concentration will ignite a capex arms race, marginalizing non-Tier-1 players from the high-end memory market entirely.