SK Hynix shares dropped more than 15% in Asia, marking its largest one-day decline on record and triggering a broad selloff in the global semiconductor sector. This plunge led to a 9% fall in South Korea's Kospi index, prompting a 20-minute trading halt. The losses were mirrored by Samsung Electronics, contributing to the market's downturn. The initial weakness in Asia quickly spread to European markets, with Dutch chip equipment companies like ASMI and ASML, and continental European firms such as STMicroelectronics and Infineon, seeing declines between 1% and 2%. U.S. premarket trading also reflected this trend, with Western Digital and Micron reportedly down around 6.5% and 5.4% respectively, while SanDisk tumbled nearly 7%.
This market correction in chip stocks comes after a robust rally earlier in the year, fueled by strong interest in high-bandwidth memory (HBM) chips for AI data centers. Investors are now reassessing valuations, particularly given new geopolitical tensions in the Middle East. Lorraine Tan, a director at Morningstar, commented that while the memory upcycle is stronger than anticipated, a normalization in cycle dynamics is expected, limiting further upside at current levels. The sale of American Depositary Receipts (ADRs) by SK Hynix last week, which raised over $26 billion and saw ADRs open 14% above their $149 offer price, preceded this significant price correction.
The volatility in SK Hynix stock has been amplified by the heavy interest from global investors betting on continued profit gains for AI-related semiconductors, coupled with the widespread use of leveraged exchange-traded funds. This environment makes the sector prone to rapid repricing when combined with profit-taking and broader risk-off shifts due to geopolitical events. The selloff highlights concerns about elevated valuations in the AI-related semiconductor space, causing investors to rotate out of these stocks and into other sectors.
