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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

AI can predict 71% of what your fund manager does

Most fund manager AI systems operate on autopilot, closely tracking the index while charging premium fees for active management. If your portfolio is essentially running itself, why are you paying someone to sit in the cockpit?

Robin Powell

Apr 209 min read

A man sits at a home desk working at a computer, with a laptop and desk lamp beside him — illustrating how retail investors are increasingly turning to AI tools to guide their financial decisions, unaware that those tools may be amplifying rather than correcting investor biases.

Does AI accentuate investor biases?

Investors are turning to AI hoping it will cut through the emotional noise and deliver clearer, more rational financial decisions. But two recent studies suggest these tools don't neutralise investor biases — they absorb them. And the more advanced the model, the worse the problem may get.

Robin Powell

Mar 107 min read

Woman on sofa using laptop to research AI investment advice — more than half of UK adults now use chatbots like ChatGPT for financial guidance

AI investment advice: What the chatbots get wrong

Consumer tests found ChatGPT scoring just 64% accuracy on financial questions. Accountants report clients losing real money. This Deep Dive examines what AI investment advice actually gets wrong — and what to do instead.

Robin Powell

Jan 2910 min read