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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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Seven things the tech sell-off tells us — and three things it doesn't
The tech sell-off wiped more than $800 billion from software stocks alone. Here are seven lessons evidence-based investors should take from it — and three things it doesn't tell us about what comes next.
Robin Powell
Feb 59 min read
Fewer bubble warnings mean greater danger
Bubble warnings spiked in late 2025, then faded — but AI stock valuations haven't budged. New research analysing over 5,000 crashes reveals why that's significant: at genuine peaks, warnings are rare and sceptics are ignored. Widespread concern may actually signal safety.
Robin Powell
Jan 2710 min read
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