Y TREE's analysis of 550 portfolios found that 84 per cent of wealth managers underperformed in 2025. Wealth management underperformance cost investors up to a third of their expected returns — and most don't even know it's happening.
The S&P 500's concentration in the Magnificent Seven has critics worried about indexing risk. But Hendrik Bessembinder's research reveals why index concentration actually strengthens the case for passive investing: just 4% of stocks drive all market returns, and active managers consistently miss these winners. Historical data shows market concentration has been normal for 150 years, from railroads to tech giants.
Robin Powell
Sep 9, 20258 min read
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