Alphabet(US:GOOGL) Benzinga·2025-11-29 09:00Core Insights - Sergey Brin, co-founder of Google, donated over $1.1 billion in Alphabet Inc. stock this week, as per a regulatory filing [1] - The donation included approximately $1 billion to Catalyst4, a nonprofit focused on central nervous system diseases and climate-change solutions, which Brin founded in 2021 [2] - Brin also allocated $90 million to his family foundation and $45 million to the Michael J. Fox Foundation for Parkinson's disease research [4] Stock Performance - Alphabet's stock has risen 85.08% in the last six months and 67.93% year-to-date, driven by the company's AI initiatives [5] - The stock has traded between $142.66 and $328.67 over the past year, with a current market capitalization of $3.87 trillion [5] - Alphabet stock has a Quality score of 87.95 according to Benzinga's Edge Stock Rankings [5]