Why SK Hynix shares crashed despite record Q2 earnings

South Korean memory chip giant SK Hynix saw its shares plunge sharply after reporting record second-quarter earnings. Despite a more than six-fold jump in operating profit, investors focused on weaker-than-expected results, delays in next-generation AI memory shipments, and concerns over the sustainability of the AI spending boom. The selloff dragged South Korea's tech-heavy market lower and sparked a broader rout in semiconductor stocks. (Sources: Reuters, CNBC, EBC Financial Group)

SK Hynix posted record quarterly revenue of about 79.3 trillion won, while operating profit surged 557% year-on-year to approximately 60.5 trillion won. Net profit also soared, supported by robust demand for high-bandwidth memory (HBM) chips used in artificial intelligence servers. However, the headline numbers fell short of lofty market expectations.

Analysts had anticipated even stronger earnings, particularly on operating profit. Investors were also disappointed by slower-than-expected shipments of HBM4 memory chips and only modest gains in conventional DRAM prices. With AI-related stocks trading at elevated valuations, even a slight earnings miss triggered heavy profit booking.

The results reinforced concerns that spending by major AI infrastructure companies may be moderating after an extraordinary investment cycle. Investors are increasingly questioning whether explosive AI-related demand can justify current semiconductor valuations, leading to broad selling across AI-linked technology stocks.

Despite near-term concerns, SK Hynix maintained an optimistic outlook. The company expects AI-driven memory demand to remain strong through 2027 and plans to increase capital expenditure to expand production capacity. It is also securing multi-year supply agreements with customers to stabilize revenue and strengthen its leadership in AI memory chips.

SK Hynix's decline weighed heavily on South Korea's equity market, contributing to a sharp drop in the Kospi index. Other semiconductor companies, including Samsung Electronics, also came under pressure as investors reassessed AI-related valuations across the sector. The weakness spilled over into broader Asian markets, although some non-tech sectors remained resilient.

SK Hynix's results highlight how elevated expectations have become in the AI era. While the company continues to benefit from booming demand for advanced memory chips and remains fundamentally strong, investors are now demanding not just record earnings but consistent outperformance and clear visibility on future growth.