Warren Buffett Just Made His Largest Deal in 3 Years, Likely His Last as CEO Berkshire Hathaway CEO Warren Buffett, 95, led a $9.7 billion deal to buy OxyChem, a petrochemical unit within Occidental Petroleum. Previous Article Elon Musk Is the First Person Ever to Reach a Net Worth of $500 Billion Next Article AI Can't Translate Culture — Here's Why Human Oversight Still Wins in Localization