The Nasdaq Composite’s highest closing value before the dot-com bubble burst was 5,048.62.
The index reached that record on March 10, 2000, after years of enthusiasm for internet and technology companies. Investors often valued businesses on website traffic, growth forecasts, or a promising online business model even when they had little or no profit.
After the peak, technology shares fell sharply. The Nasdaq Composite dropped about 78% from its March 2000 high to its October 2002 low. Many dot-com companies failed, while established technology firms also lost substantial market value.
The number is a closing value, not the highest intraday reading. The Nasdaq later surpassed the 5,048.62 closing record in 2015, more than 15 years after the original peak. The crash also helped define the broader 2000–2002 bear market in U.S. equities.