A major trade deal between the US and China has ignited a surge in the stock market, driving up the S&P 500 by 2.8%. The agreement marks a significant step towards easing geopolitical tensions, prompting optimism across investors. Technology stocks have been particularly bolstered, with companies like Apple and Amazon experiencing substantial gains as tariffs on Chinese production are reduced. The deal involves a 90-day pause in tariff reductions, followed by the lowering of tariffs to 10% for goods traded between the two countries. President Trump has retained a 20% tariff related to fentanyl concerns. Analysts suggest the trade agreement may foster future negotiations and reshape global financial interactions.