Questions grow over the AI stock market boom after the Nasdaq 100 drops 5.5%

Summary

Last week the Nasdaq 100, an index of the 100 biggest non-financial stocks on the tech-heavy Nasdaq exchange, fell 5.5%, prompting fears that the AI boom is about to go bust. The Guardian reports that the world is waiting to learn whether this year's estimated $1tn investment in artificial intelligence rests on a castle made of sand. Some AI market observers think a reassessment of the potential value of various businesses may be under way.

Timeline

1. The Guardian

   20 Oct 2026, 02:29 UTCSource ↗

   The Guardian reports that after a wobble on the tech-heavy Nasdaq, some AI market observers think a reassessment of the potential value of various businesses may be under way, amid questions about whether this year's estimated $1tn in AI investment is on shaky ground.