最新报道:According to data released by the trading information platform Kobeissi Letter on September 27th, the top 10% of US stocks by market capitalization now account for 78% of the US stock market capitalization, a record high. This percentage is still 3 percentage points higher than the record high in the 1930s and higher than the peak during the dot-com bubble in 2000, when the proportion was 74%. By comparison, in the 1980s, the total weight of the top 10% of companies by market capitalization was less than 50%. At the same time, the top 10 stocks account for a record 41% of the S&P 500's market capitalization, showing that the market has never been so concentrated.