SK Hynix Overtakes Samsung to Become South Korea’s Most Valuable Company - Yahoo Finance

SK Hynix overtook Samsung Electronics on June 22, 2026, becoming South Korea's most valuable company—a dramatic reversal that ended Samsung's uninterrupted reign since 2000. Once near bankruptcy in 20... Read original →

SK Hynix’s ascent to South Korea’s top market cap signals AI memory chips have evolved from peripheral components to critical bottlenecks in compute infrastructure. Its HBM dominance is forcing GPU designers like NVIDIA to re-architect memory interfaces, straining TSMC’s CoWoS advanced packaging capacity. Geopolitically, tighter U.S.-ROK coordination on export controls—especially restricting HBM3E transfers to Taiwan, China and mainland China—will raise compliance overhead. Samsung will likely accelerate divestitures to refocus on DRAM-logic integration, while Micron leverages CHIPS Act subsidies to scale Arizona-based HBM lines, challenging the Korean duopoly. Over the next 18 months, the race to HBM5 standardization will dictate AI supply chain leverage; SK Hynix’s valuation lead hinges entirely on sustaining yield leadership through this window.