Finance1 min read

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

By · Published by Everything Blog

In short

The S&P 500 recently fell nearly 6% from its record, enduring a sharp 4.4% single-day drop on November 5, 2026. In contrast, the tech-heavy Nasdaq shed roughly 11%, and the PHLX Semiconductor index suffered a dramatic 36% collapse from its peak. While broad market pullbacks of this size historically lead to deeper 15% drops in only 16 out of 56 instances, semiconductor recoveries have previously taken anywhere from a few months to almost 18 years.

Key points

  • Historical data shows that only 16 of 56 market drops reaching 6% since 1928 went on to e…: Historical data shows that only 16 of 56 market drops reaching 6% since 1928 went on to exceed a 15% fall.
  • Semiconductor shares have experienced a retreat severe enough to rival the sector's losse…: Semiconductor shares have experienced a retreat severe enough to rival the sector's losses during the Covid-19 pandemic.
  • Recovery times following crashes have varied dramatically, requiring over seven years for…: Recovery times following crashes have varied dramatically, requiring over seven years for broad indexes and nearly 18 years for chip stocks after the dot-com bust.

Sources checked by our analysis pipeline: 1

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…

Finance