Alphabet's stock (GOOGL) surged over 6% on November 19, 2025, breaking the $300 per share barrier for the first time to set a new all-time high. The significant rally was fueled by the announcement of Google's new, more powerful artificial intelligence model, Gemini 3. The launch has bolstered investor confidence in Alphabet's competitive positioning in the AI landscape. The new AI model reportedly features major advancements in reasoning and multimodal inputs. This positive development has helped the stock become the best-performing name among the 'Magnificent Seven' for the year to date, a notable turnaround from earlier in the year when investors were concerned about competition from other AI chatbots. The market's enthusiastic reception underscores the strategic importance of AI development for the company's future growth.