How many shares does Bill Gates have in Berkshire Hathaway? According to the latest SEC filings in February 2022, Bill Gates’ investment vehicle, Cascade Investment LLC, holds approximately 44.4 million shares of Berkshire Hathaway’s Class B common stock. This represents roughly 1.1% of the outstanding shares of Berkshire Hathaway’s Class B common stock. It’s worth noting that Cascade Investment LLC has periodically bought and sold shares of Berkshire Hathaway over the years, and the number of shares held by Gates or his investment vehicle may have changed since the last SEC filing.