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S&P 500’s Largest Stocks Hold Record 46.7% of Index
The S&P 500’s 15 largest stocks now hold a record 46.7% of the index’s total market value, increasing market concentration and volatility risk. The top 10 stocks contribute around 40.1% of the index, with NVIDIA, Apple, Alphabet, Microsoft, and Amazon contributing significantly. The research indicates that the concentration of market value in a few tech giants has heightened, with the previous record being 13.4% set in the mid-1980s.