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How much passive investing is too much?
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
Robin Powell
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Scott Adams: cartoonist, divisive commentator, scourge of active managers
Scott Adams damaged his own reputation in his later years. But long before that, the creator of Dilbert was using satire to make a serious, evidence-aligned case against active fund management — reaching tens of millions of readers along the way.
Robin Powell
Mar 26 min read
SPIVA persistence scorecard: why Robin Wigglesworth says the critics got it wrong
The SPIVA persistence scorecard has become a lightning rod for debate. Robin Wigglesworth shows how active managers’ critique collapses under scrutiny — and why persistence is the Achilles’ heel of their case.
Robin Powell
Sep 19, 20255 min read
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