Intelligence Feed event · Macro · 2026-09-25

    South Korea’s stock market stays closed for the Mid-Autumn Festival holiday

    Question

    South Korea’s stock market stays closed for the Mid-Autumn Festival holiday

    Direct answer

    The closure leaves KOSPI and major chip exporters more dependent on overseas signals and ADR pricing until the market reopens.

    Original publisher
    Market Ontology
    Evidence through
    2026-09-25
    Published
    2026-10-20
    Revision
    1 · 2026-10-20

    Cite as: Market Ontology, “South Korea’s stock market stays closed for the Mid-Autumn Festival holiday”, revision 1, evidence through 2026-09-25. https://marketontology.com/market-events/2026-09-25/south-korea-s-stock-market-stays-closed-for-the-mid-autumn-festival-holiday-d8b884

    MACRO
    South Korea’s stock market stays closed for the Mid-Autumn Festival holiday
    The closure leaves KOSPI and major chip exporters more dependent on overseas signals and ADR pricing until the market reopens.
    KOSPI005930.KSSKHYNIX.KS
    Impact
    59
    SEP 25
    SIG
    KOSPI005930.KSSKHYNIX.KS
    South Korea’s stock market stays closed for the Mid-Autumn Festival holiday
    The closure leaves KOSPI and major chip exporters more dependent on overseas signals and ADR pricing until the market reopens.
    Impact
    The closure leaves KOSPI and major chip exporters more dependent on overseas signals and ADR pricing until the market reopens.
    Affected
    KOSPI005930.KSSKHYNIX.KS
    Source facts

    How this development reaches the affected companies

    AssetExposure and channelDirectionEvidence
    KOSPIcash trading is suspended during the holiday closureWatchintradaythe stock markets in South Korea were closed on 25 September
    005930.KSSamsung Electronics cannot trade locally while the exchange is closed, increasing reliance on offshore sentimentWatchintradaySouth Korean markets were closed
    SKHYNIX.KSmemory-chip names are exposed to sentiment-driven repricing when the local market is shutWatch1-5dSouth Korean markets were closed during regional trading

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    What happened next

    Price follow-up pending — no stored daily closes for these assets yet.

    Closing prices from stored daily bars; returns measured from the last close on or before the event date. Not a recommendation.

    Sources

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