October 21, 2026Stocks·Neutral·market concentration
S&P 500's top 15 stocks hit record 46.7% of index market value
The 15 largest S&P 500 stocks now account for a record 46.7% of the index's market value, up from 27.2% during the 2000 Dot-Com Bubble. The remaining 485 stocks represent just 53.3% of the index's market value.
Detected & updated continuously · Source: Nebula
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