38% Market Concentration! Is the U.S. Stock Market Overvalued in 2025?

U.S. Equity Market Concentration: Are We Entering Overvaluation Territory? A recent chart from Goldman Sachs highlights a striking trend in U.S. equity markets: the market cap of the top 10 stocks in the S&P 500 now accounts for 38% of total market capitalization. The last time market concentration was this high was during the Great […]

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