Nvidia Drives Nearly One-Fifth of S&P 500’s 2026 Gains Amid Narrow Rally
Nvidia’s $5.2 trillion market cap contributes 20% of the S&P 500’s 9% year-to-date rise, overshadowing broader market weakness. Nvidia’s 15% gain in 2026 accounts for roughly 20% of the S&P 500’s 9% year-to-date advance, as its $5.2 trillion market cap dominates the index.