今夜，跳水！暴跌！

Market Performance - The U.S. stock market experienced a significant decline, with the Dow Jones dropping nearly 400 points and both the Nasdaq and S&P 500 indices falling approximately 0.7% [2][5] - Tesla's stock plummeted about 7% following CEO Elon Musk's announcement of plans to form a new political party [12][18] Tariff Updates - President Trump and senior cabinet officials confirmed that new tariffs will take effect on August 1, rather than the previously expected date of July 9 [5][6] - The tariffs are part of a strategy to apply pressure on countries that have not reached agreements with the U.S. [5][6] - Treasury Secretary Mnuchin indicated that multiple trade agreements are expected to be announced within the next 48 hours [8][10] Tesla's Political Involvement - Elon Musk's political ambitions, including the formation of a new party named the "American Party," have raised concerns among investors [14][16] - Musk's increased political engagement is viewed negatively by many Tesla investors, especially during a critical period for the company [16][17] - The company's second-quarter vehicle deliveries fell 14% year-over-year, missing market expectations, adding to investor anxiety [18]