[Edaily Reporter Lee Hye-ra] The domestic stock market managed to turn around and rise after just one day. While the indices closed relatively well compared to the early-session sentiment, it was a trading session marked by continued extreme volatility.

According to MP Doctor on the 11th, the KOSPI closed at 7,763.95, up 33.13 points (0.43%) from the previous session.
The KOSPI, which opened down more than 2% on the day, extended its losses early in the session, briefly dipping below the 7,400 mark. After fluctuating between gains and losses in the afternoon session, the index turned slightly higher near the close, quickly recovering the 7,760 level.
However, with a difference of about 400 points between the day’s low and high, volatility remained high.
Joint selling by foreign and institutional investors somewhat limited the index’s upside. As it was a simultaneous futures and options expiration day, the market sentiment was dragged down by a shift to a selling position worth around 670 billion won in the final moments of the session. Foreign investors also recorded net sales of 1.8567 trillion won, marking their 10th consecutive trading day of net selling. Retail investors alone absorbed 2.3368 trillion won.
The recovery of the KOSPI was largely driven by a narrowing of losses among top-market-cap semiconductor stocks.
#Samsung Electronics fell nearly 5% at one point during the day but recovered to a decline of just over 1%. #SK Hynix turned positive, rising 2.59% to regain the 2.1 million won mark.
Among the top 10 stocks by market capitalization, #SK Square (3.80%), #HD Hyundai Heavy Industries (0.78%), and #Samsung C&T (0.61%) also closed higher.
On the KOSPI, 579 stocks rose, 320 fell, and 25 remained unchanged.
The KOSDAQ market saw greater volatility.
The KOSDAQ index closed at 996.93, up 45.30 points (4.76%) from the previous trading day.
Although it showed a decline of nearly 3% early in the session, it successfully turned positive as of 9:48 a.m. and, like the KOSPI, entered a bullish trend within a single day. It stood on the verge of reclaiming the 1,000-point mark for the first time in four trading days.
The KOSDAQ market saw greater volatility. The difference between the day’s low and high was 7.83%. At 1:58 p.m. that day, the buy-side circuit breaker was triggered again. This marks the 10th buy-side circuit breaker triggered so far this year. At the time of activation, the futures price stood at 1,757.60, up 6.15%, while the KOSDAQ 150 index rose 4.94% to 1,753.70.
Institutional investors led the KOSDAQ market on this day. They switched to a buying stance overnight, recording net purchases of around 704.9 billion won. In contrast, retail and foreign investors recorded net sales of around 300 billion won.
Among the top-market-cap stocks on the KOSDAQ, large-cap stocks that surged significantly drove the index higher. Eight out of the top 10 companies by market capitalization posted gains.
The market leader, #Alteogen, closed at 347,000 won, up 10.16%. Stocks in the semiconductor materials, parts, and equipment sector performed particularly well. #Juseong Engineering (23.37%), #Wonik IPS (20.82%), #EoTech (15.07%), and #Simtek (21.74%) all posted double-digit gains.
Across both markets, the strongest sectors by industry were healthcare companies and services, diversified telecommunications services, broadcasting and entertainment, and biotechnology, in that order. Sectors that saw declines included wireless telecommunications services, construction, automotive, and steel.