Which technology-heavy market index reached its dot-com-era peak in March 2000?

The Nasdaq Composite reached its dot-com-era peak in March 2000.

The technology-heavy Nasdaq Composite closed at 5,048.62 on March 10, 2000. Investors had driven up internet and technology shares, often valuing companies on expected future growth rather than current profits. When confidence weakened, the bubble burst and technology stocks fell sharply.

The collapse is known as the dot-com bust or the bursting of the dot-com bubble. Many internet companies failed, while established technology firms also lost large portions of their market value. The Nasdaq eventually fell about 78% from its peak before bottoming in October 2002.

The peak should not be confused with the S&P 500’s record or with the later rise of profitable technology companies. The Nasdaq Composite includes thousands of listed stocks, but its technology concentration made it a widely watched measure of the bubble’s rise and collapse.