KOSPI Plunges 7.57%…Trading Concentrated in Samsung Electronics and SK hynix

The KOSPI plunged, closing at 5,554.22, down 7.57% from the previous day. Decliners greatly outnumbered advancers on both the KOSPI and KOSDAQ, while Samsung Electronics and SK hynix each recorded trading value in the 12 trillion won range.

Market at a Glance

The KOSPI fell 7.57% from the previous day to 5,554.22. Of the 890 KOSPI-listed stocks traded, 115 rose, 759 fell, and 16 were unchanged, with decliners prevailing. Trading value was approximately 43.5263 trillion won, and trading volume was 462.59 million shares. By investor type, foreign investors were net sellers, while individuals, institutions, and other investors were net buyers.

Korea market daily snapshot for 20261015

Decliners Prevail on KOSDAQ as Well

Among 1,715 KOSDAQ-listed stocks, 168 rose, 1,515 fell, and 32 were unchanged. The average change was -5.27%, while trading value was approximately 8.5072 trillion won and trading volume was 538.69 million shares. By investor type, foreign investors and other investors were net buyers, while individuals and institutions were net sellers.

Market Leaders

Samsung Electronics, the leading stock by trading value, fell 11.51% to 207,500 won. Trading volume was 57.99 million shares, and trading value was approximately 1.22722 trillion won; its trading volume ratio versus the 20-day average was 2.23 times. SK hynix fell 13.12% to 1,238,000 won, recording trading volume of 9.52 million shares and trading value of approximately 1.21583 trillion won. Its trading volume ratio versus the 20-day average was 2.05 times.

Stocks Showing Notable Volatility

Samsung Electro-Mechanics fell 18.58% to 1,122,000 won, with trading volume of 2.07 million shares and trading value of approximately 245.04 billion won. Hyosung Heavy Industries fell 16.52% to 1,789,000 won, and its trading volume ratio versus the 20-day average was 2.89 times. SK Square fell 12.19% to 749,000 won, with trading volume of 1.48 million shares and trading value of approximately 113.92 billion won.

Key Disclosures

Over the past 7 days, Samsung Electronics filed an “Executive and Major Shareholder Specified Securities Transaction Plan Report,” a “Report on Changes in Shareholdings of the Largest Shareholder and Others,” and a “Report on Results of Treasury Share Acquisition,” among others. SK hynix filed a “Corporate Briefing (IR) Held (Guidance Disclosure),” while Samsung Electro-Mechanics disclosed a “Corporate Briefing (IR) Held (Guidance Disclosure)” and a “Pre-announcement of Disclosure of Year-end Results (Guidance Disclosure).”

  • SK하이닉스 · 기업설명회(IR)개최(안내공시) (000660) — View DART filing
  • 삼성전자 · 임원ㆍ주요주주특정증권등거래계획보고서 (005930) — View DART filing
  • 삼성전자 · 최대주주등소유주식변동신고서 (005930) — View DART filing
  • 삼성전기 · 기업설명회(IR)개최(안내공시) (009150) — View DART filing
  • 삼성전기 · 결산실적공시예고(안내공시) (009150) — View DART filing
  • 삼성전자 · 자기주식취득결과보고서 (005930) — View DART filing

Next Trading Day Checkpoints

  • Changes in the distribution of advancing, declining, and unchanged stocks on the KOSPI
  • Whether the trend of decliners prevailing on the KOSDAQ continues
  • Changes in the trading volume and trading value of Samsung Electronics and SK hynix
  • Whether additional disclosures are made by major stocks
This article was written solely on the basis of the price, trading, investor-flow, and disclosure information provided in the FACT JSON.

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