The Nasdaq Composite’s largest one-day percentage fall during the dot-com crash was 9.67%.
The decline occurred on April 14, 2000, during the collapse of the late-1990s technology-stock bubble. The Nasdaq Composite had reached a record closing high of 5,048.62 on March 10, 2000. As investors reassessed the profits and valuations of internet and technology companies, the index began a prolonged fall.
The April 14 loss was one of the most dramatic single-day moves of the crash, but the wider decline continued for years. The Nasdaq eventually reached a closing low of 1,114.11 on October 9, 2002, representing a fall of roughly 78% from its 2000 peak.
The figure is sometimes confused with the index’s point loss or with percentage declines on other technology-heavy market measures. This question uses the Nasdaq Composite’s percentage change for that trading day.