Question
You have $106,000 to invest in a portfolio containing Stock X, Stock Y, and a risk-free asset. You must invest all of your money. Your
You have $106,000 to invest in a portfolio containing Stock X, Stock Y, and a risk-free asset. You must invest all of your money. Your goal is to create a portfolio that has an expected return of 11 percent and that has only 65 percent of the risk of the overall market. If X has an expected return of 28 percent and a beta of 1.8, Y has an expected return of 16 percent and a beta of 1.1, and the risk-free rate is 5 percent, how much money will you invest in Stock Y? (Do not round intermediate calculations. Round your answer to the nearest whole dollar.)
example solution from a similar practice problem
E[Rp] = 0.13 = wX(0.31) + wY(0.20) + (1 wX wY)(0.07)
p = 0.76 = wX(1.80) + wY(1.20) + (1 wX wY)(0)
Solving these two equations in two unknowns gives:
wX = -0.496296
wY = 1.37778
wRf = 0.11852
Amount of Stock Y to buy = 1.37778($138,000) = $190,134
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