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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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Sector rotation: would seeing it coming make you rich?
A sharp sector rotation has swept the US stock market, and the instinct is that a clever forecaster could have called it and cashed in. But experiments by Elm Wealth — first with finance graduates handed tomorrow's headlines, then with leading AI models — suggest that even perfect foreknowledge rarely makes an investor money. The deciding factor turns out to be not foresight but how much you choose to stake.
Robin Powell
Jun 279 min read
Chasing returns: seven decades of evidence on why investors get it wrong
Two investors can study the same rising market and reach opposite conclusions about what comes next. A new MIT working paper spanning 68 years finds that only the contrarian, sophisticated forecast has ever reliably predicted returns, while the bullishness of ordinary investors — the instinct behind chasing returns — predicts little or points the wrong way. Here is what seven decades of evidence say that feeling is really worth.
Robin Powell
Jun 227 min read
Does "buy the dip" actually work?
"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
Investing at market highs: three paths to overcoming paralysis
Investing at market highs often triggers fear and hesitation. Yet a century of market data shows that record peaks are a normal feature of long-term growth. This article explores three clear, evidence-based ways to approach investing at market highs without falling into paralysis.
Robin Powell
Oct 22, 202517 min read
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