Shares of Alphabet surged 65% last year, marking its strongest performance in over a decade as the company successfully deployed Gemini 3, its latest frontier AI model, and secured a favorable antitrust ruling. Data from S&P Global Market Intelligence show that through the first three quarters of 2025, revenue expanded 14% year-over-year to $289 billion, while operating income rose in step to $93.1 billion. Investor sentiment turned decisively positive on September 3, when a federal judge ruled that Alphabet could retain control of both Chrome and Android — a decision that sent the stock jumping 9% in a single day by removing the specter of a forced breakup. The stock climbed another 6% on November 24 following strong early reviews of Gemini 3 and news that Berkshire Hathaway had taken a position in the company.

Building on its AI momentum, Alphabet secured a major win in early 2026 when Apple announced it would integrate Gemini into Siri, providing the virtual assistant with advanced conversational and reasoning capabilities. This strategic tie-up underscores Gemini’s growing reputation as a leading large-language model and expands its footprint beyond Google’s own products. Meanwhile, Alphabet’s autonomous vehicle arm, Waymo, continued geographic rollout of its robotaxi service, entering additional metropolitan areas and forging partnerships with local automakers. Together, these developments position Alphabet not only as a dominant force in search and digital advertising but also as a critical supplier of AI infrastructure and services across multiple industries.