The South Korean stock market is closed on Monday, October 5, 2026, with the Korea Exchange (KRX) observing a substitute public holiday. Trading in major indices, including the KOSPI, will remain suspended for the entire session.
The market closure comes in connection with National Foundation Day, or Gaecheonjeol, which is observed every year on October 3.
Why is the South Korea stock market closed today?
The Korea Exchange is shut on October 5 because National Foundation Day falls on a weekend this year. South Korea observes a substitute holiday when certain designated public holidays coincide with a weekend.
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National Foundation Day, known locally as Gaecheonjeol, is celebrated on October 3. The day commemorates the traditional founding of Gojoseon, regarded in Korean history and mythology as the first Korean kingdom. Since October 3 falls on a Saturday in 2026, Monday, October 5, has been designated as the substitute holiday.






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