There is strong academic research showing that diversification benefits roll off quickly, with research suggesting that 6-8 stocks to 10-12 stocks capture most diversification benefits, and that owning 25 stocks is not necessarily safer than owning half that number if the quality is right.
factualpending
Speaker
Chris MayerEvidence Quote
“I remember Joel Greenblatt he said something like six to eight. The advantages of diversification roll off pretty quickly.”
Created: 8/10/2026, 10:53:18 PM
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