Warren Buffett's Berkshire Hathaway reveals new stake in beleaguered insurer UnitedHealth

People watch as Berkshire Hathaway chairman Warren Buffett is seen on a screen speaking at the Berkshire Hathaway annual shareholders' meeting in Omaha, Nebraska, on May 3, 2025.Warren Buffett's Berkshire Hathaway revealed a new stake in troubled insurer UnitedHealth after secretly building the position for two quarters in a row, according to a regulatory filing.The Omaha-based conglomerate bought more than 5 million shares in the health care firm for a stake worth about $1.6 billion at the end of June. The ...