Which famous technology-heavy index fell about 78% after the dot-com bubble peaked in 2000?

The Nasdaq Composite fell about 78% after the dot-com bubble peaked in 2000.

The index reached an intraday high of 5,132.52 on March 10, 2000, as investors placed extraordinary valuations on internet and technology companies. Many firms had little revenue or no profits, but their shares rose on expectations of rapid online growth.

The bubble burst as investors became less willing to pay speculative prices, interest-rate conditions changed, and companies failed to meet optimistic expectations. The Nasdaq Composite eventually fell to a low of 1,108.49 on October 9, 2002, a decline of roughly 78% from its peak.

The crash did not eliminate the internet economy. Companies with stronger business models survived or later prospered, while many highly valued start-ups disappeared. The Nasdaq Composite is broader than the Nasdaq-100 because it includes thousands of Nasdaq-listed common stocks.