Investing Basics

The Power of Index Funds: Why Passive Beats Active Over Time

Review the empirical data proving that low-cost passive index funds consistently outperform the vast majority of active Wall Street fund managers over 10-to-20-year horizons.

Alexander Reed Written by Alexander Reed
Published: 10/06/2026 7 min read

The Mathematical Certainty of Low Fees

Year after year, S&P Dow Jones Indices releases its scorecard (SPIVA) comparing actively managed equity funds against broad market benchmarks. Across 15-year periods, over 88% to 92% of professional active large-cap fund managers fail to beat their benchmark after fees. Index funds remove manager risk and fee drag by passively matching the overall market return at near-zero expense.

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Alexander Reed

Alexander Reed

Chief Editorial Director & Quantitative Analyst

Alexander leads editorial strategy at AureviaFin. He previously worked as an algorithmic trader and educational director, specializing in personal finance systems and technical literacy.

Editorial Transparency & Disclaimer: The educational content published on AureviaFin is researched and authored independently. It does not constitute individualized financial, investment, or legal counsel. See our full Financial Disclaimer and Editorial Policy.