Which crash erased much of the value of technology shares after the Nasdaq peaked in March 2000?

The crash that erased much of the value of technology shares after the Nasdaq peaked in March 2000 was the dot-com crash.

The Nasdaq Composite reached 5,048.62 on 10 March 2000, after years of enthusiasm for internet companies. Many businesses had little revenue or no profits, yet investors assigned them extremely high valuations because they expected rapid online growth.

When confidence changed, technology shares fell sharply. The Nasdaq declined about 78% from its March 2000 peak to its October 2002 low. Numerous internet companies failed, while larger firms with stronger finances generally survived and later benefited from the expansion of online commerce.

The dot-com crash is sometimes treated as a single-day event, but it was actually a prolonged market decline. It also differs from the 2008 crash: the dot-com collapse centered mainly on technology valuations, whereas the later crisis was driven largely by housing, credit, and financial-system distress.