SK Hynix, a South Korean semiconductor giant and key supplier of high-bandwidth memory (HBM) for AI systems, made a historic Nasdaq debut on July 10, 2026, raising $26.5 billion in the largest U.S. stock sale by a foreign company, surpassing Alibaba's 2014 offering. The company priced its American depositary receipts (ADRs) at $149 each, and shares surged 14% to open at $170, reaching a high of $177 before closing at $168.01. However, by midday on July 13, the first day of regular trading under the ticker SKHY, shares fell around 9% to a low of $151.30, eventually closing at $139.14, giving back most of the debut gains. The selloff was even more severe in South Korea, where SK Hynix's Seoul-listed shares dropped over 15%, dragging the Kospi index down 9% and triggering a temporary trading halt.