Buffett's Shot in the Arm Sends UnitedHealth Soaring Against the Odds

Key Takeaways Shares of UnitedHealth Group Incorporated (UNH) jumped nearly 12% last Friday after Warren Buffett's Berkshire Hathaway Inc. (BRK.B) revealed that it had snapped up a significant number of shares of the troubled health insurer. As of June 30, 2025, Berkshire had amassed more than 5 million UNH shares, a stake worth roughly $1.57 billion. The disclosure came despite Berkshire maintaining its broader net-seller stance, marking the 11th consecutive quarter in which it sold more than it bought. Th ...