Suppose you are able to precisely identify the portfolio of risky assets with the highest Sharpe ratio (the "tangency portfolio"). The tangency portfolio has an expected return of 11% and a standard deviation of 15%. Risk-free treasuries return 3%. You are advising a client whose risk aversion is such that you would recommend they choose the "optimal" portfolio with an expected return of 7%. Which of the following portfolios does this description match?
Multiple portfolios would meet this criterion
50% tangency portfolio and 50% risk-free treasuries
The portfolio consisting of risky assets that minimizes risk for a return target of 7%
Not enough information
75% tangency portfolio and 25% risk-free treasuries
Weight of Tangency Portfolio + Weight of Risk Free Treasuries = 1
Expected Return = Weight of Tangency Portfolio * Return from Tangency Portfolio + Weight of Risk Free Treasuries * Return from Risk Free Treasuries
0.07 = ( 1 - Weight of Risk Free Treasuries) * 11% + Weight of Risk Free Treasuries * 0.03
0.07 = 11% - Weight of Risk Free Treasuries) * 11% + Weight of Risk Free Treasuries * 3%
- 4% = - Weight of Risk Free Treasuries) * 8%
Weight of Risk Free Treasuries = 50%
Weight of Tangency Portfolio = 50% OptionA
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