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What is evidence-based investing?
Nobody can establish who first used the phrase 'evidence-based investing', and no regulator defines it. Robin Powell, who was given the name by Larry Swedroe in 2015 and is sometimes wrongly credited with coining it, sets out what it actually means: four tests of what counts as evidence, borrowed from a medical parallel that hit the same crisis twelve years ago. Including where he goes further than a global tracker, and why he holds that position less firmly than he used to.
Robin Powell
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Why expected returns matter more than index concentration
The fund industry says index concentration is the big risk. But the evidence points elsewhere. Compressed expected returns are what really threaten your long-term wealth — and the right response is simpler and cheaper than the industry would have you believe.
Robin Powell
Feb 279 min read
Index concentration: why the Mag7 'problem' strengthens the case for indexing
The S&P 500's concentration in the Magnificent Seven has critics worried about indexing risk. But Hendrik Bessembinder's research reveals why index concentration actually strengthens the case for passive investing: just 4% of stocks drive all market returns, and active managers consistently miss these winners. Historical data shows market concentration has been normal for 150 years, from railroads to tech giants.
Robin Powell
Sep 9, 20258 min read
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