Alphabet(GOOG.O) shares plunged more than 6% online after reports that Apple (AAPL.O) is considering adding artificial intelligence search capabilities to its browser, which could challenge Google's dominance in the search space. Meanwhile, Eddy Cue, senior vice president of Apple Services, revealed that searches on the company's browser fell for the first time in April. Couey also mentioned that Apple is actively exploring adding artificial intelligence search capabilities to its browser, which has raised concerns about Alphabet's future share of search revenue. The comments suggest that Apple may be seeking to reduce its reliance on Google's search engine, which could affect Alphabet's advertising revenue.