Dow plummets over 600 points as Trump tariff fears, UnitedHealth roil markets
1. UnitedHealth shares dropped 17% after profit forecast cut. 2. High medical costs are expected to impact profitability. 3. Other health insurers also faced declines due to market sentiment. 4. Market indexes are poised for weekly losses amid trade tensions. 5. Jobless claims were lower than expected, indicating market stability.