The CAPM has serious limitations in real world, as most of the assumptions, are unrealistic. Many investors do not diversify in a planned manner. Besides, Beta coefficient is unstable, varying from period to period depending upon the method of compilation. They may not be reflective of the true risk involved.
What are the assumptions of CAPM and its limitations?
Another disadvantage in using the CAPM in investment appraisal is that the assumption of a single-period time horizon is at odds with the multi-period nature of investment appraisal. While CAPM variables can be assumed constant in successive future periods, experience indicates that this is not true in the real world.
What are the assumptions of CAPM?
The following are assumptions made by the CAPM model: All investors are risk-averse by nature. Investors have the same time period to evaluate information. There is unlimited capital to borrow at the risk-free rate of return.
What are the limitations of CAPM model?
The major drawback of CAPM is it is difficult to determine a beta. This model of return calculation requires investors to calculate a beta value that reflects the security being invested in. It can be difficult and time-consuming to calculate an accurate beta value. In most cases, a proxy value for beta is used.
What is the purpose of CAPM?
The Capital Asset Pricing Model (CAPM) is a model that describes the relationship between the expected return and risk of investing in a security. It shows that the expected return on a security is equal to the risk-free return plus a risk premium, which is based on the beta of that security.