The Magnificent Seven Stocks: Market Cap, S&P 500 Weight, and Returns

The Magnificent Seven made up 35% of the S&P 500's value in October 2026.

By Lyle Daly – Updated Oct 5, 2026 at 8:02 PM EST | Fact-checked by Frank Bass

Key Points

  • The Magnificent Seven stocks account for 34.9% of the S&P 500 as of October 2026.
  • Nvidia led gains among them with a 25.44% YTD return, while Tesla fell by 17.60%.
  • Collectively, these stocks have shifted the S&P 500's composition, influencing index performance.

Premium Investing Services

Invest better with The Motley Fool. Get stock recommendations, portfolio guidance, and more from The Motley Fool's premium services.

The Magnificent Seven’s Market Cap vs. the S&P 500 | The Motley Fool