Group 1 - The U.S. stock market showed mixed results on July 21, with the Nasdaq and S&P 500 indices reaching new highs, while the Dow Jones Industrial Average experienced a slight decline [3] - The Nasdaq rose by 78.51 points (0.38%) to close at 20,974.17, and the S&P 500 increased by 8.81 points (0.14%) to finish at 6,305.60 [3] - Among the S&P 500 sectors, communication services and consumer discretionary led the gains with increases of 1.90% and 0.60%, respectively, while energy and healthcare sectors saw declines of 0.96% and 0.61% [3] Group 2 - Major tech stocks had mixed performances, with ARM rising over 3%, Alphabet and Qualcomm up over 2%, and Netflix nearly 2% higher, while ASML fell over 2% and Dell Technologies and Micron Technology dropped over 1% [3] - Amazon's stock increased by 1.40%, with analysts expecting Q2 earnings per share of $1.32 and revenue of $162 billion, representing year-over-year growth of 4% and 9% [4] - Amazon plans to invest $104 billion in capital expenditures this year, the highest among S&P 500 companies, including investments in data centers and logistics [4] Group 3 - Tesla is set to release its earnings report this week, which is anticipated to influence trends in the electric vehicle industry and investor sentiment [4] - Neuralink, a company owned by Elon Musk, successfully completed two surgeries in one day, aiming to improve the lives of millions [5] - The Nasdaq Golden Dragon China Index saw a slight decline of 0.28%, with mixed performances among Chinese stocks, including a significant rise in Huya by 16% [5] Group 4 - Fitch Ratings downgraded the outlook for 25% of U.S. industries to "deteriorating," citing increased uncertainty, slowing economic growth, and expectations of prolonged high interest rates [6] - The recent tax and spending legislation highlights long-term challenges for the U.S. fiscal outlook, potentially keeping the government deficit above 7% of GDP [7] - Fitch predicts that by 2025, the default rates for U.S. high-yield bonds and leveraged loans will rise to 4.0%-4.5% and 5.5%-6.0%, respectively [7]