That’s prompting investors to reassess the technology landscape and the potential changes in stock market leadership, as rave reviews for Alphabet’s new Gemini artificial intelligence model and demand for AI chips pushes its shares higher. Shares in the Mountain View, California-based firm rallied 2% to hit a $3.9 trillion market value. Its 37$1 trillion in value over that time. Gains this year have left the Platforms is in discussions to use Google chips — known a ...