Remember CAPM, or the Capital Asset Pricing Model — the bedrock of the science of stock returns that you were taught at B-School? Well, the world has since moved on, and a significant number of ‘factors’ besides just systematic risk are proven to be at play in shaping the ‘yield curve’ on your corpus. Welcome to the world of ‘factor investing’. Factors are definitional characteristics — value, quality, growth or momentum — that are sort of