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.
"Buy the dip" sounds like smart investing — wait for prices to fall, then pounce. But 60 years of evidence reveals the strategy underperforms passive investing more than 60% of the time. Here's why waiting for the perfect moment costs more than it saves.
Robin Powell
Dec 18, 20258 min read
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