The universe of available securities includes two risky stocks A and B, and a risk-free asset. The data for the universe are as follows:
Assets | Expected Return | Standard Deviation |
---|---|---|
Stock A | 6% | 25% |
Stock B | 12% | 42% |
Risk free | 5% | 0 |
The correlation coefficient between A and B is -0.2.
The investor maximizes a utility function
U=E(r)−σ2
(i.e. she has a coefficient of risk aversion equal to 2).
Assume that to maximize his utility when there is no available risk-free asset, an investor invest w in stock A and 1-w in stock B.
a) What is the value of w?
Further assume that this investor has A=5 and the above risky portfolio in a) containing A and B is the OPTIMAL risky portfolio. The investor wants to maximize his utility when using both risky assets and risk-free asset. How much will he invest in stocks A and B and in risk free assets?
Weight in stock A?
Weight in stock B?
Weight in risk-free asset?
The universe of available securities includes two risky stocks A and B, and a risk-free asset....
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