The average S&P 500 company is spending less time in the index, and that matters

One thing that doesn’t get talked about enough in traditional finance: companies are cycling in and out of the S&P 500 much faster than they used to.

Decades ago, a company could stay in the index for generations. Today, competitive pressure, tech disruption, and faster capital flows mean even blue chips can lose relevance quickly.

It’s a reminder that passive investing isn’t truly set and forget, and why understanding market cycles, innovation, and risk management matters more than ever.

Markets reward adaptation, not legacy.