1- Why do assets of the same type who positive covariances of returns with each other? Would you expect positive covariances of returns between different types of assets such as returns on Treasury bills, General Electric common stock, and commercial real estate? Why or why not?
2- While the Capital Asset Pricing Model (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 criticizm.