KOSPI Closes Down in 6% Range After Circuit Breaker Triggered, Holds Above 5,000

Losses narrow slightly from the 8% range to the 6% range
KOSDAQ closes down in the 5% range

The KOSPI closed down in the 6% range after volatile trading that included the activation of a circuit breaker.

On Nov. 6, the KOSPI closed at 5,059.69, down 6.02% from the previous session. The index continued to plunge, with a Level 1 circuit breaker activated during the morning session. It then turned upward, narrowing its losses to the 4% range at one point in the afternoon. Losses widened again later in the afternoon, and the index closed down in the 6% range.

By investor type, foreign investors were net sellers of 2.7692 trillion won. Individuals and institutions were net buyers of 601 billion won and 1.7042 trillion won, respectively.

By sector, all sectors fell except telecommunications, which rose 2.1%. Electrical and electronics fell 7.84%, while medical and precision instruments (down 7.24%), manufacturing (down 6.84%), machinery and equipment (down 6.55%), securities (down 5.74%), insurance (4.88%), and financials (down 4.71%) also declined.

The domestic stock market is shown on an electronic board in the dealing room at Hana Bank headquarters in Jung-gu, Seoul, on Nov. 6, 2026, after the KOSPI plunged more than 8% shortly after opening, triggering a circuit breaker. Photo by Kang Jinhyung

Among the top companies by market capitalization, most fell, with the exceptions of Samsung SDS (up 6.3%), Hanjin KAL (up 2.9%), KT (up 2.9%), NAVER (up 2.8%), Kakao (up 0.3%), SK Telecom (up 0.2%), and Industrial Bank of Korea (up 0.2%). Hyosung Heavy Industries fell 11.9%, while SK Square (down 10.5%), SK hynix (down 10.4%), LS ELECTRIC (down 10.2%), and Doosan Enerbility (down 9.3%) also declined. Samsung Electronics fell 6.3%.

The KOSDAQ also closed at 644.27, down 5.03%. The index fell as much as 6% during the morning session, when a sell-sidecar was triggered, but recovered some of its losses by the close.

By investor type, foreign investors and individuals were net sellers of 100.1 billion won and 110.6 billion won, respectively, while institutions were net buyers of 205.8 billion won.

Among the top companies by market capitalization, results were mixed. Wonik Holdings rose 5%, while JYP Entertainment (up 4.5%), Seojin System (up 4.2%), PharmaResearch (up 4.2%), Peptron (up 3.8%), Pearl Abyss (up 3.4%), and ROBOTIS (up 1.3%) also gained. By contrast, ISC fell 14.1%, while Eugene Technology (down 14%), OliX (down 13.8%), PSK Holdings (down 13.1%), and Hana Micron (down 13%) also declined.

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