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Markets Rumor First seen

Post lists historical October market crashes and 2025 Bitcoin flash crash

A post on r/investing lists historical October market crashes, including the Panic of 1907, the 1929 Crash, Black Monday in 1987, the 2008 Financial Crisis, and a Bitcoin flash crash on October 10, 2025. The post states that the 1987 drop was 22.6% and that the 2025 Bitcoin event lost over $19B in leveraged positions within 24 hours.

Why “Rumor”

  • Only community or trader posts: r/investing

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

Market around the story

AssetPrice at first report6h before1h before1h after6h after1h move vs normal24h volume vs median
BTC $80,806 −1.1% −0.80% ! +0.92% +0.47% 2.6σ 1.3×

Returns are measured from the moment the story first appeared. “vs normal” compares the move with the asset's typical hourly move over the previous 30 days.

  • DJI Still being measured. The price reaction is recorded once the market has traded for six hours after the first report.

What the sources claim

  1. On October 19, 1987, the Dow Jones Industrial Average fell 22.6%, the largest one-day percentage drop in history. DJI

    “On October 19, 1987, the Dow Jones Industrial Average plummeted 22.6%, the largest one-day percentage drop in history.”
    r/investing
  2. On October 10, 2025, Bitcoin had a flash crash that lost over $19B in leveraged positions within 24 hours. BTC

    “October 10, 2025, Bitcoin’s Flash Crash, losing over $19B in leveraged positions within 24 hours.”
    r/investing
  3. The 1929 Crash led into the Great Depression, with the Dow Jones dropping around 25% over a few days in late October. DJI

    “The 1929 Crash (Black Tuesday/Thursday): The severe market collapse that led into the Great Depression, with the Dow Jones dropping around 25% over a few days in late October.”
    r/investing
  4. The Panic of 1907 was a severe financial crisis that triggered a massive run on banks.

    “The Panic of 1907: A severe financial crisis which triggered a massive run on banks.”
    r/investing
  5. Steep declines and intense volatility of the Great Recession peaked in October 2008.

    “The 2008 Financial Crisis: Steep declines and intense volatility of the Great Recession peaked in October 2008.”
    r/investing

Sources

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Summary and claims extracted by AI with prompt analyze-story@5 on 2026-10-15 12:30 UTC. Labels are computed from the sources, not by the model.