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Question 5 ( 1 0 marks ) Consider the following classic portfolio choice problem. Two assets are available to an investor at time t .

Question 5(10 marks)
Consider the following classic portfolio choice problem. Two assets are available to an investor
at time t. One is riskless, with simple return Rf from time t to t+1, and the other is risky. The
risky asset has simple return R from time t to t+1. The investor puts a share w of his portfolio
into the risky asset. We assume that the investor trades off mean and variance in a linear fashion.
That is, investor maximizes a linear combination of mean and variance, with a positive weight on
mean and a negative weight on variance:
u=(E[Rp]-k2p2)
a)(7 marks) What is the proportion of wealth invested in risky asset?
b)(8 marks) Explain two-fund separation in relation to your answer in part (a). What does k
represent and why?Question 3(15 marks) Consider the following classic portfolio choice problem. Two assets are available to an investor at time t. One is riskless, with simple return R, from time t to t+1, and the other is risky. The risky asset has simple return R from time t to t+1. The investor puts a share w of his portfolio into the risky asset. We assume that the investor trades off mean and variance in a linear fashion. That is, investor maximizes a linear combination of mean and variance, with a positive weight on mean and a negative weight on variance: --(e[2.] ;) a)(7 marks)What is the proportion of wealth invested in risky asset? b)(8 marks) Explain two-fund separation in relation to your answer in part (a). What does k represent and why?
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