Investing in an S&P 500 index fund or growth index fund is a colossal mistake during periods of narrow market concentration because those index funds are dominated by the seven to ten largest companies, which may not perform well given the abundance of growth opportunities in a much broader universe globally.

normativepending

Speaker

Richard Bernstein

Evidence Quote

if you're investing in an index fund or you're investing in a growth index fund, I think you're making a colossal mistake [5:10]

Source

The Colossal Mistake | The Danger of Narrow Markets — Practical Lessons from Richard BernsteinExcess Returns
Created: 8/11/2026, 7:31:42 AM

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