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.
Terry Smith's Fundsmith Equity fund has underperformed for four years, losing billions in outflows. But is this evidence of declining skill or simply bad luck? Academic research reveals it takes 36-800 years of data to statistically prove a fund manager has genuine talent rather than benefiting from chance. Smith's 14-year track record, despite early success, is statistically meaningless. His recent struggles with NVIDIA, Apple and Novo Nordisk may look like stock-picking err
TEBI
Jul 8, 20257 min read
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