S&P 500 Gains and Losses Today: GM Stock Tumbles After Trump Declares Auto Tariffs
1. GM shares plummeted 7.4% after new 25% car import tariffs announced. 2. Tariffs disproportionately affect GM due to high imports from Mexico and South Korea. 3. Other automakers also declined, but GM faced the steepest drop. 4. Market reaction included gains for auto parts retailers benefitting from older vehicle usage. 5. S&P 500 fell 0.3% as investors analyzed the trade policy impacts.