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EVENT / TOPICHistorical

KOSPI Jumps 4.53% as Korea Exchange Halts Program Buying Ahead of SK Hynix Earnings

1 reports1 sources10/27/2026 updated

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The Korea Exchange suspended program buying for five minutes on Thursday as the KOSPI index surged 4.53%, marking its sixth consecutive day of circuit breaker halts. SK Hynix and Samsung Electronics led gains in the memory sector, but the index later erased all intraday advances. Market focus remains on SK Hynix's earnings release on October 28 and Samsung Electronics' on October 29, with memory chips comprising a significant portion of the KOSPI index.

Written with AI from the reporting · updated 10/27/2026

Latest developmentOct 27, 10:46
KOSPI surges 4.5% as Seoul pauses program buying ahead of SK Hynix earnings
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  1. 1Unclassified fact stationOct 27, 00:00recorded Oct 27, 11:24single source

    KOSPI 4.53% 单日涨幅

    Read original source ↗ BeInCryptoReplay this moment in the explorer
    Evidence & revisions · 1 source records
    Subject：
    KOSPI
    Action：
    单日上涨 4.53%
    Object：
    股指
    Occurred (fact side)：
    Oct 27, 00:00
    BeInCrypto ↗Report pageOriginal / first version
    Published (valid side)：
    Oct 27, 10:46
    First seen (known side)：
    Oct 27, 11:24
    Fact stationSingle source · one-sided claim

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Oct 27
  1. BeInCryptoRelated fact: single source
    KOSPI surges 4.5% as Seoul pauses program buying ahead of SK Hynix earnings

    Report first recorded Oct 27, 11:24

    South Korea's KOSPI jumped 4.53% to 5,717.30 on Tuesday morning, prompting the Korea Exchange to halt program buying for five minutes. The rally was driven by a rebound in AI-linked chip stocks overnight in the US, with SK Hynix and Samsung Electronics leading gains in Seoul. However, the index erased those gains within two sessions, remaining nearly 40% below its June peak. The rebound hinges on upcoming earnings from SK Hynix and Samsung, which together account for about half the index weight.

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