S&P 500 top 15 = record 46.7% (27.2% in 2000): avg top-15 weight ~3.1% vs ~0.11% for the other 485 (~28x)
The 15 biggest companies in the S&P 500 now make up a record 46.7% of the index's value, per The Kobeissi Letter. At the 2000 dot-com peak that share was 27.2%.
So the average top-15 stock weighs ~3.1% while the average of the other 485 weighs ~0.11%, about 28x more. A "500 stock" index fund is mostly a 15 stock fund with a long tail.
https://x.com/KobeissiLetter/status/2112729083876405561
Sources: @tradewithpaulo: top 5 equal the bottom 434; diversified index fund stops meaning what people think · @QuintenFrancois: S&P 500 top 15 = 46.7%, remaining 485 = 53.3%
Not financial advice. For informational and educational purposes only.
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