What technology sector fueled the U.S. market bubble that peaked in March 2000?

Internet companies fueled the U.S. market bubble that peaked in March 2000.

The dot-com bubble formed as investors poured money into businesses connected to the rapidly expanding World Wide Web. Many companies had attractive domain names and ambitious growth plans but little revenue, profits, or proven business model. Venture funding and public offerings helped push valuations to extraordinary levels.

The Nasdaq Composite reached a closing peak of 5,048.62 on March 10, 2000. After the peak, technology shares fell sharply as investors reassessed earnings prospects, interest rates, competition, and the cost of building online businesses. The downturn damaged both listed companies and venture-backed start-ups.

Not every internet company failed. Firms such as Amazon survived and later grew substantially, while the crash eliminated or weakened many speculative ventures. The dot-com crash therefore describes a broad market reversal, not the disappearance of the internet economy.