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The AI sell-off compared to well-known stock market crashes

The AI sell-off compared to well-known stock market crashes

16 hours ago

6 Nov 2026

The AI sell-off compared to well-known stock market crashes

The S&P 500 is 6% below its record, a small fall next to past crashes: since 1928, only 16 of 56 drops that reached 6% went past 15%. Tech took more of the hit. The Nasdaq is 11% down and US chip stocks 36%, as deep as their Covid fall. How long a recovery takes varies just as much: after dot-com, the S&P 500 was back at its record in 7 years, chip stocks in 18.

The S&P 500 at the close on 6 Nov 2026

Below record
−6%
From its record close
Thursday 5 Nov
−4.4%
Worst day since 4 Apr 2025
Trading days since record
23
Since 6 Oct 2026
Slides that went past 15%
16 of 56
Slides since 1928 that reached 6%

How far the S&P 500 fell below a record close

Each line runs from a record high to the low that followed. Eight of the 16 falls past 15% since 1928 are shown.

Daily closes to 6 Nov 2026

FallRecord closeLowBelow recordTrading daysBack at record
AI sell-off6 Oct 2026So far−5.7%23Not yet
April 202519 Feb 20258 Apr 2025−18.9%3427 Jun 2025, 4 months
20223 Jan 202212 Oct 2022−25.4%19519 Jan 2024, 2.0 years
Covid19 Feb 202023 Mar 2020−33.9%2318 Aug 2020, 6 months
2008 crisis9 Oct 20079 Mar 2009−56.8%35528 Mar 2013, 5.5 years
Dot-com24 Mar 20009 Oct 2002−49.2%63730 May 2007, 7.2 years
1987 crash25 Aug 19874 Dec 1987−33.5%7126 Jul 1989, 1.9 years
1973 oil shock11 Jan 19733 Oct 1974−48.2%43617 Jul 1980, 7.5 years
Great Depression16 Sep 19291 Jun 1932−86.2%67822 Sep 1954, 25.0 years

Mild for the S&P 500, a crash for chip stocks

How far each index is below its record now, against the lows of its own best-known past falls. US chip stocks (the PHLX Semiconductor index) are 36% down from their 22 Jun record, as deep as their Covid fall.

Daily closes to 6 Nov 2026

IndexBelow record nowPast falls
S&P 500−5.7% since 6 Oct 2026April 2025 −18.9%, 2022 −25.4%, Covid −33.9%, 2008 −56.8%, Great Depression −86.2%
Nasdaq−10.9% since 6 Oct 2026April 2025 −24.3%, Covid −30.1%, 2022 −36.4%, 1973 −59.9%, Dot-com −77.9%
US chip stocks−35.8% since 22 Jun 2026Covid −35.0%, April 2025 −39.7%, 2022 −46.5%, Dot-com −87.2%

After dot-com, the S&P 500 took 7 years to recover, chip stocks 18

Years from each index's record close to its first close back at or above it. Prices only: with dividends reinvested, most recoveries were shorter. These are worst cases, for someone who bought at the record.

S&P 500NasdaqUS chip stocks
Great Depression25.0 yearsBefore indexBefore index
1973 oil shock7.5 years5.7 yearsBefore index
1987 crash1.9 years1.9 yearsBefore index
Dot-com7.2 years15.1 years17.7 years
2008 crisis5.5 yearsInside dot-comInside dot-com
Covid6 months3.5 months3.5 months
20222.0 years2.3 years2.0 years
April 20254 months6.5 months1.2 years
AI sell-offNot yet: 1 month, −6%Not yet: 1 month, −11%Not yet: 4.5 months, −36%
CrashIndexRecord closeBack at record
Great DepressionS&P 50016 Sep 192922 Sep 1954, 25.0 years
Great DepressionNasdaqBefore index
Great DepressionUS chip stocksBefore index
1973 oil shockS&P 50011 Jan 197317 Jul 1980, 7.5 years
1973 oil shockNasdaq11 Jan 19737 Sep 1978, 5.7 years
1973 oil shockUS chip stocksBefore index
1987 crashS&P 50025 Aug 198726 Jul 1989, 1.9 years
1987 crashNasdaq27 Aug 19873 Aug 1989, 1.9 years
1987 crashUS chip stocksBefore index
Dot-comS&P 50024 Mar 200030 May 2007, 7.2 years
Dot-comNasdaq10 Mar 200023 Apr 2015, 15.1 years
Dot-comUS chip stocks10 Mar 200021 Nov 2017, 17.7 years
2008 crisisS&P 5009 Oct 200728 Mar 2013, 5.5 years
2008 crisisNasdaqInside dot-com
2008 crisisUS chip stocksInside dot-com
CovidS&P 50019 Feb 202018 Aug 2020, 6 months
CovidNasdaq19 Feb 20208 Jun 2020, 4 months
CovidUS chip stocks19 Feb 20205 Jun 2020, 3 months
2022S&P 5003 Jan 202219 Jan 2024, 2.0 years
2022Nasdaq19 Nov 202129 Feb 2024, 2.3 years
2022US chip stocks27 Dec 202114 Dec 2023, 2.0 years
April 2025S&P 50019 Feb 202527 Jun 2025, 4 months
April 2025Nasdaq16 Dec 202427 Jun 2025, 6 months
April 2025US chip stocks10 Jul 202410 Sep 2025, 1.2 years

About the data

  • The S&P 500 is the price index, without dividends, from daily closes on Yahoo Finance. Before March 1957 the series is its predecessor, the S&P 90.
  • A fall runs from a record close to the next record, so the 2011 fall sits inside the 2007 to 2013 one. Its depth is the lowest close before the next record.
  • "AI sell-off" is our name for the slide since the 6 October 2026 record.

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