Kadoa compares the AI sell-off with historical stock market crashes
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Kadoa has released an analysis comparing the AI-related stock sell-off since October 2026 with historical stock market crashes. As of November 6, the S&P 500 was down 6% from its record high, the Nasdaq was down 11%, and U.S. chip stocks (the PHLX Semiconductor Index) were down 36% from their June 22 high, a decline already comparable to the Covid period. Kadoa says that since 1928, of the 56 declines that reached 6%, only 16 exceeded 15%. Looking back at history, the S&P 500 took 7 years to recover its record after the dot-com bubble, while chip stocks took 18 years.
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- Hacker News AIThe AI sell-off compared to well-known stock market crashes
As of 6 Nov 2026 the S&P 500 is 6% below its record, while the Nasdaq is 11% down and US chip stocks 36% down, as deep as their Covid fall. Since 1928, only 16 of 56 drops that reached 6% went past 15%. After dot-com, the S&P 500 took 7 years to recover and chip stocks 18.
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Not enough continuous observations to show a trend yet.