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October 16, 2025

Top 10

Today’s chart shows how the top 10 companies by market capitalization in the S&P 500 have evolved over the last five decades.
The first striking fact: none of the leaders of 2005 remain in today’s top 10. Only Apple, Berkshire Hathaway, Microsoft and JPMorgan have survived from the 2015 list.
The current top 10 is almost entirely dominated by Big Tech — including Tesla — and their combined weight in the S&P 500 has now doubled compared to any previous decade since 1985.