The S&P 500 and Nasdaq Composite indexes closed at record highs on Tuesday, with the S&P 500 gaining 58.72 points (0.82%) to reach 7,259.47 points and the Nasdaq rising 259.06 points (1.03%) to 25,326.51. This surge was largely driven by strong performances from AI-related stocks, including Intel and AMD, as well as positive quarterly earnings reports. The Philadelphia SE Semiconductor index also hit a record high, reflecting investor confidence in the sector. The stability of the U.S.-Iran ceasefire contributed to a favorable market environment, alleviating concerns over potential conflicts in the Strait of Hormuz. According to analysts, S&P 500 companies are on track for an impressive 28% year-over-year earnings growth, the highest since 2021. Tom Hainlin, an investment strategist at U.S. Bank Wealth Management, noted that strong business spending on AI and other productivity tools, coupled with consumer spending, is driving market optimism. Additionally, U.S. job openings slightly exceeded estimates, suggesting resilience in the labor market, which may influence the Federal Reserve's approach to interest rates.