SK Hynix emerges as the most important AI chip stock on the planet

Nvidia gets the headlines. SK Hynix gets the contracts. The South Korean chipmaker has quietly positioned itself as the single most indispensable company in the AI hardware stack, controlling roughly 56% of the global high-bandwidth memory market and serving as Nvidia’s primary supplier of the memory chips that make AI accelerators actually work. From Seoul to Nasdaq, with a $26.5B detour The clearest sign of SK Hynix’s arrival as a global force came in late July 2026, when the company completed a US listing that raised $26.5 billion, the largest IPO by a foreign entity in American market history. American Depositary Receipts began trading on Nasdaq under the ticker SKHY, debuting at $149 per share. Nvidia has secured multi-year HBM supply commitments from SK Hynix estimated to be worth hundreds of billions over time. That is not a vendor relationship. That is a strategic dependency. A $1 trillion milestone, then a reality check Earlier in 2026, SK Hynix stock surged more than 250% year-to-date, pushing the company’s market capitalization to $1 trillion in May. SK Hynix posted record quarterly profits in Q2 2026, driven almost entirely by AI memory sales. The market, however, had p...