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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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Is your fund's performance statistically significant?
Some funds seem to outperform the market, but appearances can be deceptive. Before trusting those results, investors should ask whether a...

Robin Powell
Mar 17, 20253 min read


Fees are the most reliable predictor of future returns
The less you pay to invest, the better your future returns are likely to be. That’s the key finding of new research from Morningstar, as...

Robin Powell
Feb 7, 20253 min read


The role of concentration in fund performance
By LARRY SWEDROE In theory, a manager with skill has more dollars allocated to their best ideas — the returns of portfolios consisting of...

Robin Powell
Aug 5, 20224 min read
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