Black Thursday: KOSPI plunges over 7% as chip stocks rout halts trading
Korean equities suffered a historic selloff as the KOSPI plunged more than 7% on AI spending fears, triggering a 20-minute trading halt and a sell-side sidecar, with Samsung Electronics and SK hynix each sinking over 10%.
Markets & chips
KOSPI
Korea's main stock index suffered one of its sharpest single-day declines, with market-wide circuit breakers and a sell-side sidecar activated as technology shares led the retreat.
Korea's benchmark index closed down 7.57% in a broad tech-led selloff.
Samsung Electronics and SK hynix each fell more than 10% as the index dropped as much as 8%.
The sharp decline in technology shares prompted a 20-minute trading halt on the KOSPI.
The Korea Exchange activated a sell-side sidecar as the market fell sharply.
The deepening rout added to retail investor losses and raised concerns about forced selling.
Bank of Korea
The Bank of Korea governor's salary is 132 million won higher than the Federal Reserve chair's, according to the report.
Samsung Electronics
Samsung's day spanned design, display and wireless initiatives alongside reports of deepening chip-industry ties with Japan.
Samsung is presenting an exhibition of 14 artworks inspired by its products at Seoul Design Week 2026, shown on 2026 OLED TVs (model S95H) with custom frames.
Samsung detailed how its The Wall display is used in control rooms for industrial operations, sports and critical infrastructure.
Samsung is bringing global telecom partners together at its Mountain View campus on Oct. 15 for the Silicon Valley Future Wireless Summit 2026, following a Partner Day.
Samsung is adding Hungarian and Malay to Galaxy AI and Bixby features including Call Assist, Note Assist, Interpreter and Transcript Assist.
Samsung executives gathered in Tokyo as the company's semiconductor ties with Japan deepen.
SK and Samsung are among Korean companies considering acquiring a stake in Westinghouse, according to the report.
Korean chipmakers
The report examines how a memory chip glut could work in Korea's favor against China.
Business of culture
HYBE
The music video for BTS' 'Hooligan' surpassed 100 million views on YouTube.
K-pop agencies
A2O's new groups debuted with a young, multinational lineup built on a traditional K-pop formula.
Krafton
PUBG's latest update brings Bentley vehicles into the game.