 Warren Buffett is making his biggest annual donation to date, giving $5.3 billion worth of Berkshire Hathaway shares to five charities. A total of 9.93 million shares went to the Bill and Melinda Gates Foundation, with the rest going to the Susan Thompson Buffett Foundation, named for his late first wife, and the three charities led by his children Howard, Susan and Peter Buffett. That's your money now.