Warren Buffett has donated a total of around $55 billion over the last 18 years to the Bill & Melinda Gates Foundation and four of his family's foundations.
Warren Buffett's Berkshire A shares constitute 99.5% of his net worth. He revealed that his Berkshire A shares are worth $127 billion, while his remaining personal wealth outside of Berkshire Hathaway stock is about $600 million2.
Buffett's non-Berkshire wealth likely consists of a private portfolio of stocks and bonds, which accounts for the bulk of his non-Berkshire wealth. He has owned at least $80 million worth of just three stocks – Wells Fargo, Walmart, and Johnson & Johnson – in the past. Additionally, he sold at least $466 million of stock between 2000 and 2019 and disposed of bonds worth much more. His Omaha home is worth an estimated $1.4 million.