SK Hynix Reaches $1 Trillion Valuation as AI Chip Demand Soars

SK Hynix’s market valuation surpassed $1 trillion on May 27, 2026, following a surge in demand for AI memory chips. The South Korean semiconductor firm’s shares jumped as much as 11% in a single day, closing 9.21% higher, after skyrocketing 250% since the start of the year. The rally reflects growing global investment in AI infrastructure, with SK Hynix serving as a key supplier of high-bandwidth memory (HBM) chips for AI servers and accelerators, particularly to Nvidia. The company’s valuation growth aligns with broader trends in the semiconductor industry, where AI-driven demand for memory chips has tightened supply and created bottlenecks. SK Hynix and rival Samsung Electronics, which also crossed the $1 trillion mark earlier, together account for over 40% of South Korea’s Kospi index, which has nearly doubled in 2026. Analysts at KB Financial Group note that earnings upgrades have outpaced stock gains, suggesting further potential for growth. The surge in AI-related semiconductor demand has extended beyond South Korea, benefiting global firms like Micron. May 2026 marked a milestone month for memory chip giants, as soaring AI workloads—including training and inference tasks—fueled record demand for HBM chips. Wall Street analysts project AI infrastructure spending could reach $1 trillion by 2027, further bolstering the sector. However, industry concentration raises risks, including market volatility and exposure to supply chain disruptions or slower data center investments. Despite these concerns, SK Hynix’s fundamentals remain strong, with analysts describing its valuation as undervalued relative to earnings forecasts. The company’s partnership with Nvidia and its role in the AI supply chain have cemented its position as a leader in the evolving tech landscape.