Sergey Brin gifts $1.1 billion in Alphabet stock after AI rally

Core Insights - Sergey Brin donated over $1.1 billion worth of Alphabet Inc. stock, primarily to a nonprofit he founded, Catalyst4 [1][2] - The donation includes approximately $1 billion in stock to Catalyst4, which focuses on research into central nervous system diseases and climate-change solutions [2] - Additional contributions include about $90 million to Brin's family foundation and $45 million to the Michael J. Fox Foundation for Parkinson's disease research [3] Financial Impact - Brin's net worth has increased significantly this year, reaching $255.5 billion, making him the world's fourth richest person [4] - The surge in his wealth is attributed to a rally in Alphabet shares, which peaked at $323, driven by advancements in artificial intelligence [4] - Brin's total fortune has gained $97.3 billion so far this year, reflecting a strong performance of Alphabet's stock [4]