Google starts September with AI momentum after longest monthly losing streak in over a decade

Alphabet CEO Sundar Pichai speaks at the AI Impact Summit in New Delhi, India, on Feb. 20, 2026.Prakash Singh | Bloomberg | Getty ImagesAfter wrapping up its longest monthly losing streak on Wall Street in more than a decade, Google has started September by giving investors several reasons for optimism.The company on Wednesday launched Gemini 3.8 Flash, its third Flash model in six weeks, alongside a new cybersecurity model aimed at trusted government and enterprise customers. Berkshire Hathaway CEO Greg Abel also offered a public vote of confidence for Alphabet's AI position. Meanwhile, a federal judge on Wednesday rejected the Justice Department's push to force Google to sell its ad exchange, another victory for the company against the government's antitrust efforts. Taken together, the developments offer a more constructive setup for Alphabet after a difficult summer, when Google lost some of its momentum in the AI model race, saw high-profile talent departures, and underwent a major restructuring inside DeepMind.The stock hasn't yet shown much of a rebound. It rose 0.6% on Wednesday after dropping more than 1% Tuesday to start the month, so it's still down slightly as September...