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.
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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