Intelligence Feed event · Macro · 2026-09-25

    South Korea's stock market remains shut for the Mid-Autumn Festival holiday as local price discovery pauses

    Question

    South Korea's stock market remains shut for the Mid-Autumn Festival holiday as local price discovery pauses

    Direct answer

    KOSPI and large-cap semiconductor names can be more influenced by offshore positioning when the local market is shut.

    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 remains shut for the Mid-Autumn Festival holiday as local price discovery pauses”, revision 1, evidence through 2026-09-25. https://marketontology.com/market-events/2026-09-25/south-korea-s-stock-market-remains-shut-for-the-mid-autumn-festival-holiday-as-l-41bc97

    MACRO
    South Korea's stock market remains shut for the Mid-Autumn Festival holiday as local price discovery pauses
    KOSPI and large-cap semiconductor names can be more influenced by offshore positioning when the local market is shut.
    KOSPI005930.KS000660.KS
    Impact
    59
    SEP 25
    SIG
    KOSPI005930.KS000660.KS
    South Korea's stock market remains shut for the Mid-Autumn Festival holiday as local price discovery pauses
    KOSPI and large-cap semiconductor names can be more influenced by offshore positioning when the local market is shut.
    Impact
    KOSPI and large-cap semiconductor names can be more influenced by offshore positioning when the local market is shut.
    Affected
    KOSPI005930.KS000660.KS
    Source facts

    How this development reaches the affected companies

    AssetExposure and channelDirectionEvidence
    KOSPIholiday closure pauses onshore price discovery and shifts trading to offshore proxiesWatchintradaythe stock markets in South Korea were closed
    005930.KSSamsung Electronics trades with reduced local liquidity when the Korean market is shutWatchintradaySouth Korean markets were closed for the holiday
    000660.KSSK Hynix is exposed to offshore semiconductor sentiment during the local holiday closureWatchintradaySouth Korean markets were closed for the holiday

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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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