Korea stock market calendar: September 2027

IPO subscriptions and refunds, bonus-issue ex-rights and listing dates, option expiry and KRX holidays in one calendar.

Dates are Korea Standard Time (UTC+9), which does not shift for daylight saving. The Korea Exchange trades 09:00–15:30 KST and closes completely on public holidays — the Lunar New Year and Chuseok holidays move each year and can shut the market for several days in a row. IPO dates, ex-rights dates and lock-up expiries come from the filings companies publish on DART, so they appear here as soon as the filing does. You can subscribe to this calendar from the alerts page.

Trading days19

IPO subscriptions0

Market holidays3Sep 14, Sep 15, Sep 16

Option expiryThu, Sep 9

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Calendar

IPO subscriptionIPO refundIPO listingLock-up expiryPublic offeringEx-rights (bonus issue)Bonus shares listedMarket holidayExpiryBOK rate decisionUS FOMC

Mon

Tue

Wed

Thu

Fri

Sat

Sun

6Sky Labs: 1 year lock-up expiry (float 77.58% → 79.3%)

9Quarterly futures & options expiry

14Market closed: Chuseok holiday

15US FOMC decision (overnight in Korea)Market closed: Chuseok

16Market closed: Chuseok holiday

29Global Technologies: 1 year lock-up expiry (float 32.64% → 32.83%)

30Duksan Navcours: 1 year lock-up expiry (float 47.06% → 48.93%)

Events by date

Mon, Sep 6
Lock-up expiry Sky Labs: 1 year lock-up expiry (float 77.58% → 79.3%)
Thu, Sep 9
Expiry Quarterly futures & options expiry
Tue, Sep 14
Market holiday Market closed: Chuseok holiday
Wed, Sep 15
US FOMC US FOMC decision (overnight in Korea)
Market holiday Market closed: Chuseok
Thu, Sep 16
Market holiday Market closed: Chuseok holiday
Wed, Sep 29
Lock-up expiry Global Technologies: 1 year lock-up expiry (float 32.64% → 32.83%)
Thu, Sep 30
Lock-up expiry Duksan Navcours: 1 year lock-up expiry (float 47.06% → 48.93%)

The ex-rights date is the trading day before the record date (T+2 settlement), so buy by the day before the ex-rights date to receive new shares. Monthly options expire on the second Thursday (earlier if it is a holiday). Confirm all dates with company filings and Korea Exchange notices.

All Korea stock market holidays in 2027 →