Amazon.com, Yahoo!, Google and eBay are examples of dot-com companies. Telecom companies that offer voice or video services over the Internet also fit into the dot-com company umbrella.

This week marks the 25th anniversary of the peak of the dot-com bubble. In retrospect, there were signs that the market’s upward trajectory was unsustainable.

The dot-com bubble was a period during which rampant speculation and bullish investment led to the overvaluation (and subsequent crash) of the young internet technology industry on Wall Street.