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1) Consider portfolio P that is comprised from two stocks, A and B. Stock A has a standard deviation of return (A) of 25% while stock B has a standard deviation of return () of 40%. The correlation coefficient between the two stocks () is 0.5.

a) Graph (sketch) the relation between weight of stock A and variance of portfolio P. Plot weight of stock A along horizontal axis.

b) Deduce formula for weights of stocks A and B at which variance of portfolio P is minimal. Hint: Consider the variance of portfolio P as a function of the weight of stock A, wA, and minimize this function with respect to this weight. Find the values of weights.

2) zInvestors Robert and Linda have coe?cients of risk aversions equal to 1 and 2, respectively. They trade risky portfolio P with other investors and can borrow at 2% and lend at 1% in T-bill market. In particular, Robert borrows 20% of his complete portfolio while Linda lends 20% of her complete portfolio. Find the expected return and the variance of return of portfolio P.

Basic Finance, Finance

  • Category:- Basic Finance
  • Reference No.:- M915175

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