Equity Market Concentration – Market Capitalization of 10 Largest Companies as Share of S&P 500 Total
Equity Market Concentration – Market Capitalization of 10 Largest Companies as Share of S&P 500 Total What was once a mirror of the market has become a magnifying glass. Ten mega-caps now make up over 40% of the S&P 500, distorting valuations and magnifying every swing. Image: Goldman Sachs Global Investment Research