While you slept, Seoul traded
Thursday, October 15, 2026

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.

KOSPI plunges 7.57%, retreating to 5,500 level
BusinessKorea

Korea's benchmark index closed down 7.57% in a broad tech-led selloff.

KOSPI crashes 8% as Samsung, SK hynix sink over 10%
The Korea Herald

Samsung Electronics and SK hynix each fell more than 10% as the index dropped as much as 8%.

Tech rout triggers 20-minute trading halt for KOSPI stocks
The Korea Times

The sharp decline in technology shares prompted a 20-minute trading halt on the KOSPI.

KRX activates sell-side sidecar for KOSPI on sharp fall
The Korea Times

The Korea Exchange activated a sell-side sidecar as the market fell sharply.

KOSPI rout deepens retail losses, fuels forced selling fears
The Korea Times

The deepening rout added to retail investor losses and raised concerns about forced selling.

Bank of Korea

BOK governor's salary exceeds Fed chair's by 132 million won
BusinessKorea

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 presents 'Design Is an Act of Love' at Seoul Design Week 2026
Samsung Newsroom

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's The Wall showcased in control rooms from smart city to race circuit
Samsung Newsroom

Samsung detailed how its The Wall display is used in control rooms for industrial operations, sports and critical infrastructure.

Samsung hosts Silicon Valley Future Wireless Summit 2026
Samsung Newsroom

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 expands language support across Galaxy AI experiences
Samsung Newsroom

Samsung is adding Hungarian and Malay to Galaxy AI and Bixby features including Call Assist, Note Assist, Interpreter and Transcript Assist.

Samsung's top brass converge in Tokyo as Japan chip ties deepen
The Korea Herald

Samsung executives gathered in Tokyo as the company's semiconductor ties with Japan deepen.

SK, Samsung among Korean firms considering Westinghouse stake acquisition
The Korea Times

SK and Samsung are among Korean companies considering acquiring a stake in Westinghouse, according to the report.

Korean chipmakers

Why a memory chip glut could be Korea's weapon against China
The Korea Herald

The report examines how a memory chip glut could work in Korea's favor against China.

Business of culture

HYBE

BTS' 'Hooligan' music video tops 100 million YouTube views
The Korea Times

The music video for BTS' 'Hooligan' surpassed 100 million views on YouTube.

K-pop agencies

A2O groups debut with young, multinational lineup and old-school K-pop formula
The Korea Herald

A2O's new groups debuted with a young, multinational lineup built on a traditional K-pop formula.

Krafton

Bentley hits the battlegrounds in PUBG's latest update
The Korea Herald

PUBG's latest update brings Bentley vehicles into the game.

About this briefing Every day after the Seoul close, we summarize Korean markets, chipmakers and the business of K-pop, K-drama, webtoons and games — from company newsrooms, the Bank of Korea and Korea's English-language press. Summaries are AI-assisted and stick to what the linked reporting states.