KOSPI Rebounds 5%... KOSDAQ Drops Over 2%

Micron Boosts Market Sentiment
Sharp Contrasts Emerge Across Sectors

Yonhap News Agency

The gap between the KOSPI and KOSDAQ indexes was stark on June 25, 2026. While the KOSPI surged more than 5%, briefly surpassing the 9,000 mark during the session, the KOSDAQ steadily declined after the market opened, dropping to the 880 range.

On June 25, the KOSPI closed at 8,930.30, up 5.42% from the previous day. Starting at 8,703.42, the index maintained a strong upward trend and even exceeded the 9,000 level during trading. The rally appears to have been driven by the after-hours surge of over 14% in U.S. memory semiconductor company Micron Technology's stock, following its earnings announcement that far exceeded market expectations after the U.S. market closed early that morning.

Individual investors, who had shown record-breaking buying sprees until the previous day, turned net sellers, offloading stocks worth 3.3253 trillion won. Foreign investors also sold a net total of 860.6 billion won. In contrast, institutions were net buyers, purchasing 4.1771 trillion won worth of shares.

The performance of individual sectors also diverged sharply. Distribution (up 4.98%), electricity and gas (up 4.89%), finance (up 3.46%), securities (up 3.29%), insurance (up 2.75%), and real estate (up 1.67%) all rose by more than 1%. Meanwhile, several sectors declined by more than 1%, including paper and wood products (down 3.73%), entertainment and culture (down 2.11%), machinery and equipment (down 2.02%), metals (down 2.02%), chemicals (down 1.65%), medical and precision instruments (down 1.63%), transportation equipment and parts (down 1.21%), and nonmetallics (down 1.04%).

Among the top 10 stocks by market capitalization, several saw sharp gains. SK climbed by a remarkable 21.0%, and SK hynix also rose 13.1%. Samsung C&T (up 8.4%), SK Square (up 6.5%), Samsung Electronics (up 5.4%), Samsung Life Insurance (up 3.3%), and Samsung Electro-Mechanics (up 1.7%) followed. On the other hand, LG Energy Solution (down 3.5%) and Hyundai Motor (down 0.9%) declined.

In contrast, the KOSDAQ showed the opposite trend. Although it opened at 923.66, up 1.58% from the previous day, it remained on a downward trajectory throughout the session, closing regular trading at 887.81, down 2.36% from the previous day.

Unlike the KOSPI, only individual investors were net buyers in the KOSDAQ, with a net purchase of 239.3 billion won. Foreign investors and institutions were net sellers, selling 77.6 billion won and 164.5 billion won worth of shares, respectively.

Nearly all sectors in the KOSDAQ market declined. Several sectors fell by more than 3%, including metals (down 3.95%), transportation equipment and parts (down 3.73%), finance (down 3.66%), medical and precision instruments (down 3.50%), IT services (down 3.42%), entertainment and culture (down 3.22%), and pharmaceuticals (down 3.13%). Only construction (up 0.29%) and paper and wood products (up 0.24%) showed mild gains.

Among the top 10 KOSDAQ stocks by market capitalization, performances were mixed. Reno Industrial (up 3.2%), Wonik IPS (up 2.0%), Rigakem Bio (up 1.3%), and Alteogen (up 1.3%) rose. Meanwhile, Jusung Engineering (down 8.5%), Ecopro BM (down 5.8%), Ecopro (down 5.4%), EO Technics (down 3.0%), and HLB (down 1.8%) fell.

This content was produced with the assistance of AI translation services.