For an investor who has the following utility function U = -0.5*3*variance of portfolio returns, there is a risky portfolio with an expected return of 0.07 expected return of portfolio and a variance of 0.55. The risk-free rate is 0.02 and the investor can borrow or lend at this rate for unlimited amount of money. Please determine the final portfolio weight for the optimal risky portfolio for this investor. a. The optimal portfolio weight for this investor is 0.03 O b. The optimal portfolio weight for this investor is 0.09 O c. The optimal portfolio weight for this investor is 0.02 O d. The optimal portfolio weight for this investor is 0.05

For an investor who has the following utility function U = -0.53variance of portfolio returns, there is a risky portfolio with an expected return of 0.07 expected return of portfolio and a variance of 0.55. The risk-free rate is 0.02 and the investor can borrow or lend at this rate for unlimited amount of money. Please determine the final portfolio weight for the optimal risky portfolio for this investor. a. The optimal portfolio weight for this investor is 0.03 O b. The optimal portfolio weight for this investor is 0.09 O c. The optimal portfolio weight for this investor is 0.02 O d. The optimal portfolio weight for this investor is 0.05

Essentials Of Investments

11th Edition

ISBN:9781260013924

Author:Bodie, Zvi, Kane, Alex, MARCUS, Alan J.

Publisher:Bodie, Zvi, Kane, Alex, MARCUS, Alan J.

Chapter1: Investments: Background And Issues

Section: Chapter Questions

Problem 1PS

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The risk free rate is 3%. The optimal risky portfolio has an expected return of 9% and standarddeviation of 20%. Answer the following questions.a) Assume the utility function of an investor is U = E(r) − 0.5Aσ2. What is condition ofA to make the investors prefer the optimal risky portfolio than the risk free asset? b) Assume the utility function of an investor is U = E(r) − 2.5σ2. What is the expectedreturn and standard deviation of the investor’s optimal complete portfolio?
from the table below. Assuming the risk- free rate is 5%. A. Choose the best portfolio according to the Sharpe measure with explanation. B. Choose the best portfolio according to the Treynor measure with explanation. C. Choose the best portfolio according to the Jensen measure with explanation. Portfolio A 0.1 0.1 0.11 0.11 0.12 0.12 0.13 0.14 0.14 0.18 0.16 0.18 0.17 0.18 0.18 0.18 0.18 0.17 0.17 0.18 Portfolio B 0.12 0.12 0.16 0.2 0.14 0.16 0.17 0.14 0.18 0.2 0.18 0.16 0.17 0.2 0.22 0.22 0.18 0.2 0.24 0.24 Mraket M 0.09 0.09 0.1 0.1 0.11 0.11 0.11 0.12 0.12 0.13 0.12 0.14 0.12 0.14 0.13 0.13 0.13 0.14 0.14 0.13
Use the following CAPM equation for a portfolio to answer the questions that follow:E(RP) = RF + βP (RM – RF) = 1 + 0.8 (5 – 1) = 4.2% a) Is the portfolio defensive or aggressive. Why? b) If the actual portfolio return is 6%, what is the portfolio’s alpha?
The following figures show the optimal portfolio choice for two investors with different levels of risk-aversion graphically. Which statement is correct? E[R] 0.3 0.25 0.2 0.15 0.1 0.05 0 0 0.05 0.1 0.15 Figure 1 0.2 0.25 0.3 0.35 0.4 0.45 o (R) E[R] Figure (1) shows an investor with a conservative investment behavior. 0.3 0.25 0.2 0.15 0.1 0.05 0 0 Figure (2) shows an investor that borrows in risk-free rate and invests in the risky asset. 0.05 0.1 0.15 In the optimal point of both figures, the highest indifference curve is tangent to the efficient frontier. O In Figure (1), more aggressive investment decision led to a higher Sharpe ratio. Figure 2 0.2 0.25 o(R) 0.3 0.35 0.4 0.45
The optimal proportion of the risky asset in the complete portfolio is given by the equation below y*= E(Rp− Rf) A0² For each of the variables on the right side of the equation, discuss the impact of the variable's effect on y* and why the nature of the relationship makes sense intuitively. Assume the investor is risk averse
Consider the following information for four portfolios, the market, and the risk-free rate (RFR): Portfolio Return Beta SD A1 0.15 1.25 0.182 A2 0.1 0.9 0.223 A3 0.12 1.1 0.138 A4 0.08 0.8 0.125 Market 0.11 1 0.2 RFR 0.03 0 0 Refer to Exhibit 18.6. Calculate the Jensen alpha Measure for each portfolio. a. A1 = 0.014, A2 = -0.002, A3 = 0.002, A4 = -0.02 b. A1 = 0.002, A2 = -0.02, A3 = 0.002, A4 = -0.014 c. A1 = 0.02, A2 = -0.002, A3 = 0.002, A4 = -0.014 d. A1 = 0.03, A2 = -0.002, A3 = 0.02, A4 = -0.14 e. A1 = 0.02, A2 = -0.002, A3 = 0.02, A4 = -0.14
Mrs Z's utility function is given by the following equation: Uz(R, o²) = 0.3R – 0.50? Find the overall optimal portfolio for Mrs Z and compute its expected return and the standard deviation of its returns.
Consider an economy with a (net) risk-free return r1 = 0:1 and a market portfolio with normally distributed return, with ErM = 0:2 and 2M = 0:02. Suppose investor A has CARA preferences, with risk aversion coe¢ cient equal to 1 and an endowment of 10. a) Write down the maximization problem for the investor. b) Determine the amount invested in the risky portfolio and in the risk-free asset. c) Suppose another investor (B) has a coe¢ cient of absolute risk aversion equal to 2 (and the same endowment 10). Compute his optimal portfolio and compare it to that of investor A. Explain the di§erent results for investors A and B. d) Finally, consider Investor C with mean-variance preferences Ec V ar(c) (and endowment 10). Compute his optimal portfolio and compare it to that of investors A and B (as obtained in questions b and c). Compare your result with those obtained for investors A and B.
Using the following data: Scenario Probability return K1 return K2 0.2 -10% 5% W2 0.4 0% 30% W3 0.4 20% -5% compute the weights in the portfolio with minimum risk. What are the expected return and risk of this minimum risk portfolio?
he risk free rate is 3%. The optimal risky portfolio has an expected return of 9% and standarddeviation of 20%. (a) Assume the utility function of an investor is U = E(r) − 0.5Aσ2. What is condition ofA to make the investors prefer the optimal risky portfolio than the risk free asset? (b) Assume the utility function of an investor is U = E(r) − 2.5σ2. What is the expectedreturn and standard deviation of the investor’s optimal complete portfolio?
Portfolio Suppose rA ~ N (0.05, 0.01), rB ~ N (0.1, 0.04) with pA,B = 0.2 where rA and rB are CCR’s. a) Suppose you construct a portfolio with 50% for A and 50% for B. Find the variance of the portfolio CCR. b) Find the portfolio expected gross return. c) Find the expected portfolio CCR.
Use the following table to answer the questions a-c below. Standard deviation of risky | return Risky Expected return on risky portfolio Risk-free Sharpe-ratio Portfolio portfolio 1 12 3.5 4.5 2 13 3.75 4.5 3 14 4 4.5 4 15 4.25 4.5 a. Calculate the Sharpe ratio for each portfolio b. Identify the optimal portfolio from the above 4

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