The S&P 500 has closed at a record 6,200 points, powered by a historic rally in AI-related stocks that have added $5 trillion in market capitalization over the past 12 months.
AI Dominance
The Magnificent Seven tech stocks now represent 38% of the S&P 500's total value, raising concentration concerns among portfolio managers. Nvidia alone has contributed 15% of the index's 2026 gains.
Broader Market
Beyond tech, financials and healthcare are also performing well. However, small-cap stocks continue to lag, creating a widening gap between large and small company performance.
- S&P 500 closes at record 6,200
- AI stocks add $5T in market cap
- Magnificent Seven = 38% of index
- Small caps continue to underperform
