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
Thinking about creating an optimized excerpt featuring a primary keywordPolicy uncertainty feels terrifying, but the academic evidence shows it's a poor guide to what your portfolio will actually do. Here's how to tell the difference between the forecast and the real risk.
Robin Powell
Apr 98 min read
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