Separating wheat from chaff

Summary: A low price-to-book ratio can signal a bargain or a business the market has rightly abandoned. Momentum can reward a genuine winner or a speculative rally about to unravel. Factor investing has decades of evidence behind it and a structural flaw that the evidence alone won't fix.

Summary: A low price-to-book ratio can signal a bargain or a business the market has rightly abandoned. Momentum can reward a genuine winner or a speculative rally about to unravel. Factor investing has decades of evidence behind it and a structural flaw that the evidence alone won't fix. Factors offer a structured, rule-based way to navigate markets. They rank companies by measurable traits with decades of evidence tied to long-term returns. Quality favours strong fundamentals for stable compounding. Value favours companies priced below their worth, rewarding the patient and contrarian investor. Momentum favours recent winners for those at ease with higher churn and high short-term volatility. Low volatility favours smaller price swings for investors who prize capital preservation. Multifactor blends all four for diversified, cycle-resilient exposure. The theory is sound and the academic evidence deep. So why do raw factor portfolios still carry hidden risks in practice? The missing layer is not a better factor. It is better filtration. The illusion of raw factors A raw factor portfolio ranks every stock on one single-factor score and selects the top names. The f