Buy-Side Sidecar Triggered on KOSPI and KOSDAQ... Semiconductor and Equipment Stocks Rally

On June 9, the Korean stock market opened higher, led by gains in semiconductor and equipment stocks. During the session, the Korea Exchange temporarily suspended program buy orders (buy-side sidecar) on both the KOSPI and KOSDAQ markets.

As of 9:20 a.m. on the same day, the KOSPI index was trading at 7,786.34, up 301.9 points (4.03%) from the previous trading day. The index opened at 7,697.76, up 213.3 points (2.85%), and subsequently extended its gains. Individuals recorded a net buying amount of 399.2 billion won, while foreign investors sold 413.3 billion won and institutions sold 17.3 billion won, respectively.

On the 9th, the KOSPI index opened at 7,697.76, up 213.35 points from the previous trading day, as the domestic stock market status was displayed on the electronic board at the Hana Bank dealing room in Jung-gu, Seoul. On the same day, the KRW-USD exchange rate started trading at 1,529.4 won, down 5.6 won from the previous trading day. Photo by Jinhyung Kang, June 9, 2026.

By sector, medical precision instruments (5.52%), electrical and electronics (5.38%), manufacturing (4.69%), machinery and equipment (4.58%), metals (3.31%), entertainment and culture (3.05%), and general services (2.68%) showed increases. In contrast, IT services (-2.63%) and telecommunications (-0.44%) weakened.

Among the top KOSPI stocks by market capitalization, Samsung Electro-Mechanics (9.86%), SK hynix (6.65%), Kia (6.61%), SK Square (6.08%), Doosan Enerbility (5.94%), Samsung Electronics Preferred (4.42%), Samsung Electronics (3.55%), Samsung SDI (3.18%), Hanwha Aerospace (2.98%), and Samsung Life Insurance (2.93%) all registered gains. On the other hand, NAVER (-7.71%) and Hyundai Mobis (-3.43%) declined.

At the same time, the KOSDAQ index stood at 950.22, up 38.83 points (4.26%) from the previous trading day. The KOSDAQ started at 937.69, a rise of 26.30 points (2.89%), and later expanded its gains. Foreign investors recorded net purchases of 51.5 billion won, while individuals recorded net sales of 47.1 billion won. Institutions were also net sellers, with 8.1 billion won in sales.

Among the top KOSDAQ stocks by market capitalization, HPSP (14.74%), Leeno Industrial (13.51%), Wonik IPS (10.30%), Seojin System (10.15%), Simmtech (10.20%), Jusung Engineering (9.68%), Kolon TissueGene (8.73%), ISC (6.23%), EO Technics (5.93%), Rainbow Robotics (4.10%), Peptron (3.90%), LIG ChemBio (3.86%), and Alteogen (3.45%) all rose. Conversely, Padu (-1.41%) and Robotis (-0.86%) weakened.

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