KOSPI and KOSDAQ Plunge, Trigger Intraday Sell-Side Sidecar Before Rebounding

KOSPI Threatens to Fall Below 8,500 Before Rebounding

On June 23, both the KOSPI and KOSDAQ indices declined, triggering an intraday sell-sidecar.

As of 12:53 p.m. on this day, the KOSPI was trading at 8,627.2, down 5.35% from the previous session, according to the Korea Exchange. The KOSPI opened lower and fell below the 9,000-point mark, dropping to as low as 8,511.14 around 12:39 p.m. Afterward, it reversed course and hovered in the 8,600-point range.

This decline in the index was due to strong selling by foreigners and institutions, despite net buying by individual investors. Foreign investors and institutional investors recorded net sales of 5.282 trillion won and 2.1395 trillion won, respectively, while individuals purchased a net 7.421 trillion won.

On the 23rd, the KOSPI index opened at 9,083.54, down 31.01 points from the previous trading day, displayed on the electronic board showing the domestic stock market status in the dealing room of the Hana Bank headquarters in Jung-gu, Seoul. 2026.6.23 Photo by Kang Jinhyung

All sectors declined. The construction sector fell by 7.43%, medical and precision instruments by 7.08%, electrical and electronics by 5.98%, transportation equipment and parts by 5.9%, distribution by 5.06%, and machinery and equipment by 4.88%.

Among large-cap stocks by market capitalization, all declined except for Shinhan Financial Group (up 1.6%), SK Inc. (up 1.1%), Meritz Financial Group (up 0.7%), Woori Financial Group (up 0.3%), Samsung Biologics (up 0.3%), and SK Square (up 0.2%). Samsung Electronics and SK hynix dropped by 5.2% and 5.6%, respectively.

As of the same time, the KOSDAQ was trading at 913.12, down 5.71% from the previous session. The KOSDAQ also started lower, reaching 906.74 at around 12:44 p.m. before reversing to the upside.

Foreigners and institutions posted net purchases of 36.7 billion won and 123 billion won, respectively, while individuals sold a net 165.3 billion won.

Among large-cap KOSDAQ stocks, all declined except for Legochem Bio (up 6%), L&C Bio (up 2.3%), ISC (up 2.1%), Gigavis (up 0.6%), ST Pharm (up 0.4%), and Silicon Two (up 0.2%). Padu declined by 20%, while Seojin System (-11.6%), Jeju Semiconductor (-11.3%), and Rainbow Robotics (-9%) were also notable losers.

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