刚刚，捐了70亿股票

Core Viewpoint - Sergey Brin, co-founder of Google, donated over $1.1 billion worth of Alphabet stock, primarily to support his nonprofit organization, Catalyst4, which focuses on research for central nervous system diseases and climate change solutions [1][3]. Group 1: Donation Details - The donation involved more than 3.5 million shares of Alphabet stock, with approximately $1 billion allocated to Catalyst4, and an additional $90 million to his family foundation, along with $45 million to the Michael J. Fox Foundation for Parkinson's disease research [3]. - Earlier in May, Brin had donated $700 million worth of Alphabet stock to the same three charitable organizations [3]. Group 2: Financial Impact - Sergey Brin's net worth has significantly increased by $97.3 billion this year, driven by a surge in Alphabet's stock price, which reached a historical high of $323 on a recent Tuesday [3]. - Brin currently holds about 6% of Alphabet's shares, and his total wealth is estimated at $255.5 billion, making him the fourth richest person globally according to the Bloomberg Billionaires Index [3]. Group 3: Alphabet Stock Performance - Recent stock performance metrics include a high of $326.85, a low of $316.79, and a closing price of $319.95, with a total market capitalization of $3.86 trillion [4]. - The stock has shown a 52-week high of $328.83 and a low of $140.53, with a price-to-earnings ratio (TTM) of 31.09 and a price-to-book ratio of 9.99 [4].