While the capital asset pricing model (CAPM) has been widely used to analyze securities and manage portfolios

Question:

While the (CAPM) has been widely used to analyze securities and manage portfolios for the past 50 years, it has also been widely criticized as providing too simple a view of risk. Describe three problems in relation to the definition and estimation of the beta measure in the CAPM that would support this criticism.

Capital Asset Pricing Model
The Capital Asset Pricing Model (CAPM) describes the relationship between systematic risk and expected return for assets, particularly stocks. The CAPM is a model for pricing an individual security or portfolio. For individual securities, we make use of the security market line (SML) and its...