South Korea’s KOSPI index dropped nearly 5% on Monday, triggered by a sharp reversal in AI-linked tech stocks and wider market anxiety. Trading curbs were activated as heavy losses in chipmakers Samsung Electronics and SK Hynix dragged the benchmark down, marking a 28% decline from its June peak.
South Korean equities faced a major sell-off on Monday, with the benchmark KOSPI index falling nearly 5% and triggering automated trading curbs known as sidecars. These temporary halts were activated on both the KOSPI and the Kosdaq indexes to manage extreme volatility. This decline extends a four-week losing streak that has seen the index lose 28% of its value since reaching a record high on June 22.
Tech Giants Lead Market Decline
The market downturn was led by heavy selling in the country's most significant technology firms. Samsung Electronics and SK Hynix, which together represent over half of the KOSPI’s total market value, both saw their shares fall by nearly 6%. These companies are central to the global AI memory chip supply chain, and their performance is often viewed by investors as a barometer for the broader AI sector. In the automotive sector, Hyundai Motor shares dropped 7% amidst an ongoing four-hour union strike, while Kia Corp fell 7.5%.
Factors Influencing the Sell-off
Investor anxiety has been building due to high levels of leverage in AI-linked trades. Many retail investors had moved into single-stock leveraged funds, which amplify losses when market momentum shifts downward. This structure has made the index particularly sensitive to volatility. Beyond local tech concerns, international factors are also contributing to the pressure. Escalating conflict in the Gulf region has pushed oil prices higher, leading to renewed inflation concerns among global investors. Additionally, the bond market reflected this risk-off sentiment, with the 10-year Korean treasury bond yield rising by 4.7 basis points to 4.341%.
Investor Perspective on Volatility
While the current market correction is severe, it follows a period of rapid growth earlier this year. Some analysts, including those at Citi, have adjusted their near-term outlook on the market to neutral, citing the heightened volatility. However, these analysts have maintained long-term price targets for the index, suggesting that the recent sell-off may be driven more by the unwinding of leveraged positions than by a fundamental breakdown in the companies' business models. Despite the domestic sell-off, official data indicated that foreign investors were net buyers, purchasing shares worth 415.1 billion won during the session.
For investors, the next critical phase involves the upcoming wave of major global tech earnings reports. These results will provide clarity on whether the demand for AI-related components remains strong, which will be essential in testing investor conviction and potentially stabilizing the current trend.