Poor Charlie's Almanack: The Essential Wit and Wisdom of Charles T. Munger · chapter 3 · id poor-charlies-almanack-c3-05-munger-compares-stock-markets-

“Munger compares stock markets to a pari-mutuel betting system where the odds are set by other participants' bets, making it nearly impossible to beat the market through popular analytical methods.”

holdsconfidence: high✓ ZHP-verified + red-teamed

Receipts

S&P SPIVA Scorecard (2024)paywalled — manual check queued

Over the 20-year period ending December 2023, 95.7% of US large-cap active managers underperformed the S&P 500.

Fama & French, 'Luck versus Skill,' Journal of Finance (2010)DOI registry: valid

After costs, the distribution of mutual fund alphas is consistent with a world where few if any managers have stock-picking skill.

This claim is a stable, citable object. If you can falsify a verdict, tell us — corrections are loud here.