Google shares fell 12% at the opening of the US stock market, which was the biggest drop in Alphabet's history. The decline came as third-quarter financial results were reported below expectations due to lower advertising revenue from AI-generated search results, which along with heavy AI investments resulted in negative cash flow.

Google shares fell 12% at the opening of the US stock market, which was the biggest drop in Alphabet's history. The decline came as third-quarter financial results were reported below expectations due to lower advertising revenue from AI-generated search results, which along with heavy AI investments resulted in negative cash flow.