Question

In: Finance

Assume that CAPM holds. You are given the following information about the riskless rate f, stock...

Assume that CAPM holds. You are given the following information about the riskless rate f, stock X and the market portfolio, M:

E(r)

σ

Riskless Asset (f)

0.05 (5%)

0.00

Stock X

?

0.40

Market Portfolio (M)

0.10

0.20

You are not given the expected return of stock X. The correlation of the returns on stock X and the market portfolio is equal to 0.35. Assume that stock X is part of the market portfolio.

1)

Assume that the beta of stock X is equal to 1.2. What is the firm-specific risk (in standard deviation units) of stock X?

Group of answer choices

32%

45%

25%

18%

40%

2)

You have $1,000 to invest efficiently in some combination of the risk-free asset, stock X, and the market portfolio. You are thinking of investing $400 in the risk free asset. How much should you invest in stock X and the market portfolio if you want to achieve a beta of 0.60 in your portfolio?

Group of answer choices

$300 in market portfolio and $300 in stock X

$280 in market portfolio and $320 in stock X

$0 in market portfolio and $600 in stock X

$500 in market portfolio and $100 in stock X

$600 in market portfolio and $0 in stock X

3)

Imagine that your uncle Bob holds a portfolio that has a standard deviation of 35% and expected return of 10%. If he wants to keep his current level of total risk, what is a plausible increase in expected return that you can promising your uncle?

Group of answer choices

3.75%

5.75%

8.05%

4.6%

1.55%

4)

Assume that the beta of stock X is equal to 1.2. Your friend Tim Tom is not paying attention to the Investments class and decides to invest $300 in market portfolio, $400 in stock X and $300 in the risk free asset. What is the standard deviation of the efficient portfolio that delivers the same expected return?

Group of answer choices

27.2%

20.3%

30.0%

18.8%

15.6%

Solutions

Expert Solution

1.
=sqrt((0.40)^2-(1.2*0.20)^2)
=32.0000%

2.
x*1+(600-x)*1.2+400*0=1000*0.60
=>x=(1000*0.60-600*1.2)/(1-1.2)
=>x=600.00000

$600 in market portfolio and $0 in stock X

3.
=0.35/0.20*0.10+(1-0.35/0.20)*0.05-10%
=3.7500%

4.
=(0.30*0.10+0.40*(0.05+1.2*(0.10-0.05))+0.30*0.05-0.05)/(0.10-0.05)*0.20
=15.6000%


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