Bill Gates turned his fortune from software firm Microsoft into a diversified fortune including investments zero-carbon energy. In May 2021, Bill and Melinda each announced on Twitter they were ending their marriage after 27 years. They still co-chair the charitable Gates Foundation. Gates, who cofounded Microsoft with Paul Allen (d. 2018) in 1975, has transferred at least $5.7 billion worth of shares in public companies to Melinda. As of March 2020, when Gates stepped down from the Microsoft board, he owned about 1% of the software and computing company's shares. He has invested in dozens of companies including Canadian National Railway and AutoNation, and is one of the largest owners of farmland in the U.S. To date, Gates has donated an estimated $35.8 billion worth of Microsoft stock to the Gates Foundation.
