On what date did the Nasdaq Composite reach its dot-com-era closing peak?

The Nasdaq Composite reached its dot-com-era closing peak on March 10, 2000.

The index closed that day at 5,048.62, after years of enthusiasm for internet and technology companies. Investors were willing to assign extremely high valuations to businesses with limited profits, and many newly listed companies rose rapidly despite uncertain revenue models.

After the March 2000 peak, technology shares began a prolonged decline. The Nasdaq fell dramatically over the following two years as investors reassessed speculative valuations, corporate earnings, and the ability of online businesses to survive. The downturn is commonly called the dot-com crash or dot-com bubble burst.

The March 10 date refers to the closing high of the Nasdaq Composite during that bubble. It is not the same as the date of the index's later intraday records, nor does it mean every technology company peaked on that exact day. The Nasdaq eventually recovered and later exceeded the 2000 level.