OpenAI teases stream for expected browser launch, sending Alphabet shares lower

OpenAI CEO Sam Altman speaks to members of the media as he arrives at a lodge for the Allen & Co. Sun Valley Conference on July 8, 2025 in Sun Valley, Idaho.Shares of Google parent Alphabet sank 4% on Tuesday after OpenAI teased a new product launch that is widely expected to be an artificial intelligence-powered web browser.OpenAI posted a five-second video showing three browser tabs that say "Livestream," "Today" and "10 a.m. PT." The company's CEO Sam Altman highlighted the upcoming launch in a separate ...