Google Alphabet stock price today: Alphabet stock jumped nearly 6% Monday as Google’s Gemini 3 AI model ignited a sharp rebound. Shares of GOOGL and GOOG traded above $300 for the first time and hit $317.75 intraday. Analysts said Gemini 3 outperforms OpenAI and Anthropic and uses Google’s custom AI chips, raising pressure on Nvidia, which slipped 0.5%. AMD rose nearly 4%. Alphabet has gained 70% in a year with Q3 profit up 39% and margins up seven points. Google Cloud revenue grew 34%, beating Microsoft and Amazon. Gemini traffic share rose to 13.7% from 5.6%.