SK Hynix posted record quarterly results as surging demand for high-bandwidth memory chips used in generative-AI servers lifted both sales and earnings. Operating profit for the three months to June rose 68.5% from a year earlier to 9.2 trillion won (US$6.7 billion), while revenue climbed 35.4% to an all-time high of 22.2 trillion won, the South Korean company said Thursday. Management attributed the performance to strong orders from hyperscale U.S. customers, including Nvidia, that are racing to secure supply of HBM components. The company also noted that some clients pulled forward purchases to hedge against possible U.S. tariffs on semiconductor imports, further bolstering shipments during the quarter. SK Hynix, already the market leader in HBM, said it will continue to expand capacity and confirmed plans to break ground on a U.S. advanced chip-packaging plant in the first quarter of 2026. Rivals Samsung Electronics and Micron Technology are investing heavily to narrow the gap, but analysts expect SK Hynix’s dominance in AI memory to persist through the year.