Common ownership between S&P 500 companies

In plain words

This tool visualizes common ownership patterns among S&P 500 companies, showing which firms share investors. Launched in 2020, it helps investors and researchers understand interconnections between major corporations through their ownership structures. The visualization makes it easy to explore how index funds and institutional investors create overlapping stakes across the market, revealing relationships that might otherwise remain hidden in financial data.

written from the facts on this page · September 2026

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