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 investment factor reveals a counterintuitive truth: companies that spend aggressively on growth tend to deliver lower returns than their cautious peers. With Big Tech pouring hundreds of billions into AI infrastructure, six decades of academic evidence suggest investors should be sceptical.
Robin Powell
Jan 208 min read
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