US Stock Market Concentration Hits Historic High: Top 10% of Stocks Now Command 76% of Market Cap
The US stock market has hit a historic milestone as the top 10% of largest US stocks now account for 76% of the total market capitalization — the highest level ever recorded, surpassing both the pre-Great Depression peak and the Dot-Com Bubble. With the top 10 S&P 500 stocks making up 40% of the index, …