Warnings that index funds have broken the stock market all imply a threshold: a share of the market at which price discovery fails. Nobody making the argument names it. Owen Lamont, writing in the Financial Analysts Journal, argues that no such number exists short of complete passive ownership, and that what actually determines whether prices stay informative is who is left doing the trading. His case, the strongest peer-reviewed research against it, and what the performance
When Cathie Wood declared index funds "a form of socialism", she joined decades of active managers attacking passive investing on ideological grounds. But proxy voting data reveals something awkward: ARK voted with management 99.2% of the time versus Vanguard's 98.5%. We examine the evidence on index fund governance, ARK's performance record, and why "passive investing destroys capitalism" rhetoric intensifies when active managers underperform.
Robin Powell
Oct 29, 202510 min read
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