Top 10 Stocks Dominate 39.9% of S&P 500 Market Cap
Discover how the top 10 stocks in the S&P 500 now account for 39.9% of the index's market cap, marking the largest share in over 30 years.
As of Dec. 23, the 10 largest stocks in the S&P 500 accounted for 39.9% of the index's market cap, the largest share in at least 30 years.