South Korea's benchmark KOSPI index experienced a dramatic decline on Tuesday, July 28, dropping 762.84 points, or 11.29%, to hit a day low of 5,992.91. This significant market correction, dubbed 'Black Tuesday' by some, was primarily led by a sharp sell-off in the country's dominant semiconductor manufacturers, Samsung Electronics Co and SK Hynix.
Semiconductor Giants Drive KOSPI Rout
Samsung Electronics shares tumbled 13.58%, while SK Hynix saw a 7.47% decline, collectively dragging the broader market lower. These two companies together account for over half of the KOSPI's total market capitalization, making their performance highly influential on the index.
Despite this steep single-day drop, the KOSPI index remains up approximately 40% on a year-to-date basis, indicating the extent of the prior rally that fueled investor profit-taking.
Reasons Behind the Sell-Off
According to Ravi Singh, Chief Research Officer at Master Capital Services, the market downturn reflects investors locking in profits after a robust performance in technology stocks. Singh highlighted several contributing factors:
- Profit Booking: Investors capitalized on the strong run-up in technology stocks, particularly in the semiconductor sector.
- Competition Concerns: Rising competition in the AI memory chip space raised concerns.
- Stretched Valuations: Following a prolonged rally, valuations for these companies appeared stretched.
- Chinese Chipmaker Advancement: Reports suggesting that Chinese chipmakers are narrowing the technology gap contributed to investor caution, raising fears about future pricing power and earnings growth.
"The correction reflects a broader shift in market sentiment, with investors reassessing the pace of AI-driven demand after months of optimism," Singh stated. He added that while the long-term AI theme remains supportive, near-term volatility is expected to persist until buying interest returns.
Regional Impact
The weakness in South Korea's equity market had a ripple effect across other Asian bourses. Japan's Nikkei 225 declined 4.03%, while China's Shanghai Composite Index fell 1.50%. Hong Kong's Hang Seng index also saw a marginal dip of 0.03%.