Introduction
The emergence of stocks and equity have led researchers to constantly draw up new or modified theories and models to determine the market price for risk and the appropriate measure of risk for assets. One of the most well known and widely used models is the CAPM or the ‘Capital Asset Pricing Model’. CAPM is commonly used to explain differences in the risk premium across assets, where returns are determined by the level of risk of the particular asset. CAPM postulates that high expected returns are associated with high level of risk. Two main risks exist; the systematic risk or market risk measured using ‘Beta’ and the unsystematic risk or firm specific risk that could be diversified. Hence CAPM measures return on asset above risk free asset which is linearly related to the systematic risk. (Bodie, Kane, Marcus 2009)