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Exam 6: Efficient Diversification

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Question 21

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Many current and retired Enron Corp. employees had their 401k retirement accounts wiped out when Enron collapsed because ________.

A) they had to pay huge fines for obstruction of justice
B) their 401k accounts were held outside the company
C) their 401k accounts were not well diversified
D) none of these options

E) A) and C)
F) None of the above

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Question 22

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What is the standard deviation of a portfolio of two stocks given the following data: Stock A has a standard deviation of 18%. Stock B has a standard deviation of 14%. The portfolio contains 40% of stock A, and the correlation coefficient between the two stocks is -.23.

A) 9.7%
B) 12.2%
C) 14%
D) 15.6%

E) A) and B)
F) None of the above

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Question 23

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A security's beta coefficient will be negative if ________.

You are recalculating the risk of ACE stock in relation to the market index, and you find that the ratio of the systematic variance to the total variance has risen. You must also find that the ________.

You put half of your money in a stock portfolio that has an expected return of 14% and a standard deviation of 24%. You put the rest of your money in a risky bond portfolio that has an expected return of 6% and a standard deviation of 12%. The stock and bond portfolios have a correlation of .55. The standard deviation of the resulting portfolio will be ________.

Which risk can be partially or fully diversified away as additional securities are added to a portfolio? I. Total risk II. Systematic risk III. Firm-specific risk

You are constructing a scatter plot of excess returns for stock A versus the market index. If the correlation coefficient between stock A and the index is -1, you will find that the points of the scatter diagram ________ and the line of best fit has a ________.

Harry Markowitz is best known for his Nobel Prize-winning work on ________.

You run a regression for a stock's return on a market index and find the following Excel output: This stock has greater systematic risk than a stock with a beta of ________.

Which one of the following stock return statistics fluctuates the most over time?

Firm-specific risk is also called ________ and ________.

Asset A has an expected return of 20% and a standard deviation of 25%. The risk-free rate is 10%. What is the reward-to-variability ratio?

The ________ is the covariance divided by the product of the standard deviations of the returns on each fund.

If you want to know the portfolio standard deviation for a three-stock portfolio, you will have to ________.

As you lengthen the time horizon of your investment period and decide to invest for multiple years, you will find that: I. The average risk per year may be smaller over longer investment horizons. II. The overall risk of your investment will compound over time. III. Your overall risk on the investment will fall.

An investor can design a risky portfolio based on two stocks, A and B. Stock A has an expected return of 18% and a standard deviation of return of 20%. Stock B has an expected return of 14% and a standard deviation of return of 5%. The correlation coefficient between the returns of A and B is .50. The risk-free rate of return is 10%. The expected return on the optimal risky portfolio is ________.

The plot of a security's excess return relative to the market's excess return is called the ________.

A portfolio is composed of two stocks, A and B. Stock A has a standard deviation of return of 24%, while stock B has a standard deviation of return of 18%. Stock A comprises 60% of the portfolio, while stock B comprises 40% of the portfolio. If the variance of return on the portfolio is .0380, the correlation coefficient between the returns on A and B is ________.

Which of the following correlation coefficients will produce the least diversification benefit?

An investor can design a risky portfolio based on two stocks, A and B. The standard deviation of return on stock A is 24%, while the standard deviation on stock B is 14%. The correlation coefficient between the returns on A and B is .35. The expected return on stock A is 25%, while on stock B it is 11%. The proportion of the minimum-variance portfolio that would be invested in stock B is approximately ________.