Chapter 06: Risk and Return
55. Which of the following statements is CORRECT?
a. If you found a stock with a zero historical beta and held it as the only stock in your portfolio, you would by
definition have a riskless portfolio.
b. The beta coefficient of a stock is normally found by regressing past returns on a stock against past market returns.
One could also construct a scatter diagram of returns on the stock versus those on the market, estimate the slope of the line
of best fit, and use it as beta. However, this historical beta may differ from the beta that exists in the future.
c. The beta of a portfolio of stocks is always larger than the betas of any of the individual stocks.
d. It is theoretically possible for a stock to have a beta of 1.0. If a stock did have a beta of 1.0, then, at least in
theory, its required rate of return would be equal to the risk-free (default-free) rate of return, rRF.
e. The beta of a portfolio of stocks is always smaller than the betas of any of the individual stocks.
56. Which of the following statements is CORRECT?
a. Suppose the returns on two stocks are negatively correlated. One has a beta of 1.2 as determined in a regression
analysis using data for the last 5 years, while the other has a beta of −0.6. The returns on the stock with the negative beta
must have been negatively correlated with returns on most other stocks during that 5-year period.
b. Suppose you are managing a stock portfolio, and you have information that leads you to believe the stock market
is likely to be very strong in the immediate future. That is, you are convinced that the market is about to rise sharply. You
should sell your high-beta stocks and buy low-beta stocks in order to take advantage of the expected market move.
c. You think that investor sentiment is about to change, and investors are about to become more risk averse. This
suggests that you should re–balance your portfolio to include more high-beta stocks.
d. If the market risk premium remains constant, but the risk-free rate declines, then the required returns on low-beta
stocks will rise while those on high-beta stocks will decline.
e. Paid-in-Full Inc. is in the business of collecting past-due accounts for other companies, i.e., it is a collection
agency. Paid-in–Full’s revenues, profits, and stock price tend to rise during recessions. This suggests that Paid–in-Full
Inc.’s beta should be quite high, say 2.0, because it does so much better than most other companies when the economy is
weak.