---
title: "Another day, another record: The top 10 companies in the S&P 500 now account for a record 37% of the index."
description: "This percentage officially exceeds peak levels seen during the 2000 Dot-Com bubble by 10 percentage points.\nOver the last decade, the market concentration has more than DOUBLED.\nFurthermore, the top 10 stocks alone now have a market cap of ~$18.7 TRILLION.\nThis means that the top 10 stocks in the US now have a combined market cap that is $1 trillion higher than the entire European stock market.\n\nSource: The Kobeissi Letter"
---

[Syz The Moment](https://blog.syzgroup.com/syz-the-moment)

# [Another day, another record: The top 10 companies in the S&P 500 now account for a record 37% of the index.](https://blog.syzgroup.com/syz-the-moment/another-day-another-record-the-top-10-companies-in-the-sp-500-now-account-for-a-record-37-of-the-index)

 Written by [Charles-Henry Monchau, CFA, CMT, CAIA](https://blog.syzgroup.com/syz-the-moment/author/charles-henry-monchau) | Nov 7, 2024, 3:44:11 PM

[View full post](https://blog.syzgroup.com/syz-the-moment/another-day-another-record-the-top-10-companies-in-the-sp-500-now-account-for-a-record-37-of-the-index)

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