What name is commonly given to the collapse of technology shares that began in 2000?

The collapse of technology shares that began in 2000 is commonly called the dot-com crash.

During the late 1990s, investors poured money into internet companies, including businesses with little revenue or no profits. The Nasdaq Composite became a central measure of this enthusiasm and reached a record closing level of 5,048.62 on March 10, 2000.

After confidence broke, technology shares fell sharply. Many internet companies failed, while surviving firms faced years of reassessment. The Nasdaq ultimately lost roughly 78% of its value from its 2000 peak to its 2002 low.

The crash did not mean that the internet lacked economic value. Instead, it showed that a promising technology can coexist with unsustainable valuations. The later success of major internet businesses is therefore not evidence that the original prices were justified.