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Downside CAPM

Downside CAPM

We have devoted a lot of blog space in the past examining the pros and cons of the Capital Asset Pricing Model (CAPM). The model predicts the amount of excess return (return above the risk-free rate) of an arbitrary portfolio that can be ascribed to a relationship (called beta[1]) to the excess returns on the underlying market portfolio.

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Copyright 2011 Eric Bank, Freelance Writer
Capital Asset Pricing Model, Part Two – Systematic Risk

Capital Asset Pricing Model, Part Two – Systematic Risk

We are reviewing the underlying assumptions made by the Capital Asset Pricing Model (CAPM). Recall from last time the assumption that returns are distributed normally (i.e. a bell-shaped curve) and how this fails to account for skew and fat tails. Today we’ll look at CAPM’s assumption that there is but a single source of priced systematic risk: market beta.

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Copyright 2011 Eric Bank, Freelance Writer