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An investor has a risk aversion of 4. If she wants to invest all her wealth in the stock market that has a standard deviation
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Answer #1

Given,

risk aversion of an investor A = 4

standard deviation of portfolio SD = 16%

Weight in the stock y = 1

weight of the risky portfolio is

y = (E(p) - Rf)/A*SD^2

So, E(p) - Rf = 1*0.04*16*16 = 10.24%

So, implied risk premium(E(p) - Rf) = 10.24%

When A = 2

now implied risk premium (E(p) - Rf) = 1*0.02*16*16 = 5.12%

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