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KOSPI plunge wipes about $830 billion from top 10 South Korean groups' market cap

A r/stocks post reports that the KOSPI's 18.8% plunge this month erased about 1,101 trillion won (approximately $830.7 billion) from the market capitalization of South Korea's top 10 business groups, falling from 4,472.5308 trillion won to 3,371.441 trillion won as of Oct. 23. The post states SK Group fell 30.1% and Samsung Group 24.3%, with the two accounting for 90% of the total decline, while HD Hyundai and Hanwha each dropped around 20%, LG Group fell only 5.3% and POSCO Group limited its decline to 6.4%.

Why “Rumor”

  • Only community or trader posts: r/stocks

0 independent source groups across 1 post · evidence score 9/100. How labels work

What the sources claim

  1. The KOSPI's 18.8% plunge this month erased about 1,101 trillion won, roughly $830.7 billion, from the market cap of South Korea's top 10 business groups.

    “The Kospi's 18.8% plunge this month has erased about 1,101 trillion won (approximately $830.7 billion)”
    r/stocks

  2. The top 10 groups' market cap fell from 4,472.5308 trillion won at the end of last month to 3,371.441 trillion won as of Oct. 23.

    “fell from 4,472.5308 trillion won at the end of last month to 3,371.441 trillion won as of Oct. 23”
    r/stocks

  3. SK Group posted the steepest decline at 30.1% as SK Hynix and SK Square tumbled on worries over AI value chain profitability.

    “SK Group posted the steepest decline at 30.1%, as SK Hynix and SK Square tumbled on worries over the profitability of the AI value chain”
    r/stocks

  4. Samsung Group fell 24.3%, the largest absolute loss at about 525 trillion won (approximately $396.1 billion).

    “Samsung Group fell 24.3%, the largest loss in absolute terms at about 525 trillion won (approximately $396.1 billion)”
    r/stocks

  5. SK Group and Samsung Group together accounted for 90% of the total decline.

    “The two groups accounted for 90% of the total decline.”
    r/stocks

  6. HD Hyundai and Hanwha each dropped around 20% on weakness in shipbuilding and defense stocks, while LG Group fell only 5.3% and POSCO Group limited its decline to 6.4%.

    “HD Hyundai and Hanwha each dropped around 20% on weakness in shipbuilding and defense stocks, but LG Group fell only 5.3%”
    r/stocks

Sources

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Summary and claims extracted by AI with prompt analyze-story@5 on 2026-10-25 15:20 UTC. Labels are computed from the sources, not by the model.