Alphabet shares rise after Google unveils Gemini 3

Alphabet shares rose 3% on November 19, 2025 after Google unveiled its latest AI model, Gemini 3.

Gemini 3, which updates the Gemini 2.5 model released eight months ago, will be integrated into Google’s search, Gemini app, and enterprise products.

Alphabet’s stock gains this week also follow Berkshire Hathaway’s disclosure of a new stake in the company.

Shares of Alphabet have climbed over 55% in 2025.

🔗 Source: CNBC

🧠 Food for thought

Implications, context, and why it matters.

Google says Gemini 3 tops 19 of 20 tests, with an 11-point lead over GPT-5.1 on Humanity’s Last Exam (a broad general-knowledge and reasoning test) and about 40% better factuality 1. It also claims a 2 to 3x edge on ARC-AGI 2, a benchmark for fluid intelligence and reasoning (a standardized test of abstract pattern recognition and problem-solving) 1, which needs outside confirmation.
Third-party tests were mixed 2. Gemini 3 won six of nine head-to-head tasks against ChatGPT-5.1 with creative or analytical prompts 2, yet the gap in daily use looks smaller.
Analysts call Gemini 3 a strong competitor, not a clear leader [News Article]. Reviewers say only power users need to upgrade 1.

For queries with AI Overviews (Google Search’s AI-generated summary boxes at the top of results), organic click-through rates fell 61% to 0.61% and paid CTR slid 68% to 6.34% by September 2025 3.
Losses hit news and media by 26 to 55% 4, health by 20 to 35% 4, and education where Chegg saw a 49% drop 4. Expansion ran fastest in entertainment, restaurants, and travel, which raises risk there 5.
Being cited in AI Overviews drives measurable Return on Investment (ROI) 3. Cited brands get 35% more organic clicks and 91% more paid clicks than uncited rivals 3. About 92.36% of AI citations come from top 10 domains, so Search Engine Optimization (SEO) still anchors strategy 5.