AI bubble fears sink Nasdaq as OpenAI revenue doubts spread

The Nasdaq 100 fell 1.4% on Tuesday. A warning about OpenAI's revenue shook confidence in artificial intelligence stocks, and the losses spread quickly. Big technology companies led the decline. Investors worried that OpenAI, the maker of ChatGPT, may earn less than expected. That concern hit other AI bets too, including chipmakers. The selloff pulled down US equity benchmarks, which are broad measures of the stock market. Technology giants hold great weight in these indexes, so their losses drag the whole market down. Investors now question whether the AI boom is a bubble — a market where prices rise far above real value. When a bubble bursts, prices can fall sharply.