South Korean stocks diverged on August 10, with the KOSDAQ index surging 6.97% to close at 854.47 while the KOSPI index rose a modest 0.65% to 6299.66. The rally was driven by bio and semiconductor equipment sectors, as individual investors net bought 899.9 billion won in KOSPI and institutions purchased 567.3 billion won, while foreigners sold 1.4937 trillion won. Samsung Electronics and SK Hynix traded near flat levels, reducing volatility in the main KOSPI index. The KOSDAQ index has risen in five of six trading sessions this month, recovering from July's decline, with a buy-side circuit breaker triggering at 9:50 AM marking the third such event in August. Analysts noted that excessive selling in July created rebound conditions across growth stocks, though upcoming US July CPI data on August 12 Korean time remains a near-term variable for market direction.
KOSPI Rises 0.65% as Sector Rotation Offsets Chip Stock Weakness
The KOSPI index closed at 6299.66, up 40.89 points or 0.65% from the previous trading day. The intraday high-low range was 161.61 points. Individual investors net bought 899.9 billion won worth of shares, institutions purchased 567.3 billion won, and foreigners sold 1.4937 trillion won on the Korea Exchange spot market basis. Among institutional accounts, financial investment firms handling ETF-related volume net bought 617.6 billion won.
Samsung Electronics and SK Hynix, the semiconductor leaders that have driven the market this year, closed near flat. Lee Kyung-min, researcher at Daishin Securities, stated that news of Apple considering memory chip adoption from China's CXMT "once again dampened still-unstable semiconductor investment sentiment."
Sector rotation reduced concentration in leading stocks, with Hanwha Aerospace and HD Hyundai Heavy Industries rising over 5%, Hyundai Motor and Doosan Enerbility gaining over 3%, and LG Energy Solution advancing over 2% among large-cap names. By sector, medical precision equipment rose over 7% and metals gained over 6%. Lim Jung-eun and Tae Yun-sun, researchers at KB Securities, noted that "the proportion of advancing KOSPI stocks reached 73% as industrials including shipbuilding, defense, and power equipment rose, continuing the trend of reduced concentration in leading stocks."
KOSDAQ Surges 6.97% Above 850 on Alteogen and Semiconductor Equipment Rally
The KOSDAQ index closed at 854.47, up 55.66 points or 6.97% from the previous trading day, extending its August rally. The index has closed higher in five of six trading sessions this month. At 9:50 AM, a program buy-side circuit breaker was triggered, marking the third such event this month.
Institutions net bought 566.1 billion won worth of shares, foreigners purchased 105.6 billion won, and individuals sold 672.9 billion won.
Alteogen, the KOSDAQ's largest stock by market capitalization, closed at 348,000 won, up 43,000 won or 14.10%, lifting market sentiment. The rally was attributed to a disclosure that BlackRock, the world's largest asset manager, acquired a 5% stake. SK Hynix's production facility investment disclosure added momentum to semiconductor equipment stocks. Jusung Engineering jumped over 13%, Wonik IPS rose over 11%, and HLB gained over 9%. By sector, non-metals surged over 11%, general services over 10%, and machinery, electronics, finance, and manufacturing all rose over 7%.
Kang Jin-hyuk, researcher at Shinhan Investment & Securities, stated that "while KOSDAQ stock valuations are high, three consecutive months of 10-20% declines triggered panic selling even in promising companies," adding that "warmth spread across growth stocks during the supply vacuum and the index rebounded, with stock-specific movements likely after excessive declines conclude."
Analysts Cite Valuation Recovery and Segment System as KOSDAQ Drivers
Securities firms observe that differentiation within KOSDAQ will intensify in the second half based on the National Growth Fund and the tiered segment system. Lee Sang-jun, researcher at NH Investment & Securities, stated that "the final tiered system plan will be decided between next month and October, and once top-segment (tentatively named Select) companies are confirmed, fund inflows into these firms could act as upward momentum."
The US July CPI scheduled for release on the night of August 12 Korean time is identified as a near-term market variable. The indicator will reveal whether oil price rebounds from US-Iran tensions create upward pressure on interest rates.
FAQ
What caused the KOSDAQ index to surge 6.97% on August 10?
The KOSDAQ index rose 6.97% to 854.47 driven by bio and semiconductor equipment sector strength. Alteogen, the index's largest stock, jumped 14.10% after BlackRock disclosed a 5% stake acquisition. SK Hynix's production facility investment announcement boosted semiconductor equipment stocks, with Jusung Engineering rising over 13% and Wonik IPS gaining over 11%. Institutions net bought 566.1 billion won while individuals sold 672.9 billion won.
Why did the KOSPI index rise only 0.65% compared to KOSDAQ's 6.97% gain?
The KOSPI index closed at 6299.66, up 0.65%, as Samsung Electronics and SK Hynix traded near flat levels following news that Apple is considering memory chip adoption from China's CXMT. However, sector rotation reduced concentration in chip stocks, with Hanwha Aerospace and HD Hyundai Heavy Industries rising over 5% and medical precision equipment gaining over 7%. Individual investors net bought 899.9 billion won while foreigners sold 1.4937 trillion won.
What is the significance of the US July CPI release scheduled for August 12 Korean time?
The US July CPI scheduled for release on the night of August 12 Korean time is identified as a near-term market variable. The indicator will reveal whether oil price rebounds from US-Iran tensions create upward pressure on interest rates, potentially affecting Korean stock market direction in the short term.
