Warren Buffett’s Berkshire Hathaway Reveals $4 Billion Stake in Major Tech Company — and Shares Are Skyrocketing Posted byAmanda Breen April 7, 2022 Leave a comment on Warren Buffett’s Berkshire Hathaway Reveals $4 Billion Stake in Major Tech Company — and Shares Are Skyrocketing The investment gives Berkshire Hathaway an approximately 11.4% stake in the multinational information technology company.