Which US stock-market index peaked in March 2000 before the dot-com crash?

The Nasdaq Composite peaked in March 2000 before the dot-com crash.

The index reached an intraday high of 5,132.52 on March 10, 2000. It was heavily influenced by technology and internet companies, many of which had attracted enormous investment despite limited profits or, in some cases, no workable business model.

After the peak, investors began reassessing these valuations. The Nasdaq fell sharply as technology shares were sold, and the decline continued for roughly two years. By October 2002, the index had lost about 78% from its high.

The crash affected more than internet start-ups. Telecommunications companies, software firms, and equipment manufacturers also suffered. The episode remains a common example of how optimistic expectations, easy financing, and momentum trading can push prices far above fundamental measures of value.