KOSPI Opens Higher Then Turns Lower... Samsung Electronics and SK hynix Decline

KOSDAQ on the Rise

The KOSPI started higher in early trading on the 4th but reversed to decline. Both Samsung Electronics and SK hynix also turned downward.

As of 9:34 a.m. on this day, the KOSPI was trading at 6,205.32 on the Korea Exchange, down 0.83% from the previous session.

While foreign investors and retail investors net purchased stocks worth 257.9 billion won and 154.3 billion won, respectively, institutional investors sold off 430.6 billion won, driving the index lower.

Performance differed greatly by sector. The telecommunications sector rose by 4.3%, while construction (3.76%), electricity and gas (2.5%), non-metallic minerals (2.2%), and paper and wood (1.75%) also posted gains. In contrast, the insurance sector fell by 2.19%, with electrical and electronic equipment (-2.05%), manufacturing (-1.81%), and distribution (-1.62%) also recording declines.

On the 4th, employees are monitoring the stock market and exchange rates in the dealing room of Hana Bank headquarters in Jung-gu, Seoul. On the day, the KOSPI started the session at 6351.38, up 93.93 points (1.50%) from the previous trading day, showing a firm upward trend, while the KOSDAQ opened at 748.19, rising 10.84 points (1.47%) and expanding its gains. August 4, 2026 Photo by Cho Yongjun

Among the top market capitalization stocks, NAVER surged 9.8%, while SK Telecom (9.5%), LIG Defense & Aerospace (3.7%), Doosan Enerbility (4%), Hyosung Heavy Industries (3.8%), and Korea Electric Power Corporation (2.3%) also rose. On the other hand, Hyundai Mobis fell by 5%, while Samsung Electro-Mechanics (-4.5%), Doosan (-4.5%), Samsung Life Insurance (-3.6%), SK Inc. (-3.8%), SK hynix (-3.5%), and Samsung Electronics (-3.3%) declined.

At the same time, the KOSDAQ was trading at 764.39, up 3.67% from the previous session. Although foreign investors and retail investors recorded net sales of 88.3 billion won and 49.1 billion won, respectively, institutional investors net purchased 138.4 billion won.

Most of the leading KOSDAQ stocks rose. D&D Pharmatech climbed 14.6%, while ABL Bio (14%), Voronoi (13.7%), Olix (12.8%), LIG ChemBio (12.6%), and Woory Technology (9.5%) also advanced. In contrast, SPG fell by 2.8%, and Eugene Technology (-1.8%) and Rainbow Robotics (-1.7%) also declined.

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