Which technology-focused U.S. index lost about 78% during the dot-com crash from 2000 to 2002?

The Nasdaq Composite lost about 78% during the dot-com crash from 2000 to 2002.

The index peaked at 5,048.62 on March 10, 2000, as investors heavily bought internet and technology shares. Many companies had little revenue or profit, but their valuations rose rapidly amid enthusiasm about the commercial internet.

After the bubble began to deflate, technology shares fell sharply. The Nasdaq Composite reached a bear-market low of 1,114.11 on October 9, 2002, representing a decline of roughly 78% from its peak. The fall was one of the clearest indicators of the wider dot-com collapse.

The Nasdaq Composite is often confused with the Nasdaq-100. The Composite includes all common stocks listed on the Nasdaq exchange, while the Nasdaq-100 tracks 100 of the largest non-financial Nasdaq-listed companies. The index eventually recovered and later surpassed its 2000 record.