S&P 500 · October 19, 2000

A bounce in the middle of earnings season

+3.47%

single-day change vs previous close

Part of a longer stretch

The dot-com bust hits the S&P 500

early in it · 2000-03-24 → 2002-10-09, -49.15% over the whole period

What happened that day?

19 October 2000 — the S&P 500 rose 3.47%. No single cause for that one day could be pinned down
October is when third-quarter results land, and that October the market reacted to every single tech report
The index had been stepping down since September. Big up-days inside a falling market are ordinary
The damage was far worse on the Nasdaq. More than half of the S&P 500 sat outside tech, which cushioned it
The bounce changed nothing. The index hit its episode low on 20 December
From the 1 September high to the 20 December low the index fell 16.84%

Sources

Every figure on this page is recomputed from the original daily closing prices and checked against them at build time. The account of what happened is put together from the public record; where a specific source was consulted it is listed above.