S&P 500 Gains & Losses Today: UnitedHealth Stock Climbs After News of Berkshire Stake
1. UNH shares surged 12% after Berkshire Hathaway increased its stake. 2. Rising medical costs continue to pressure UnitedHealth and competitors. 3. Consumer sentiment reports indicated growing economic concerns. 4. S&P 500 fell 0.3%, marking a decline after record highs. 5. UNH outperformed other health insurers on Friday.