Answer:
The portfolio's alpha is - 0.15%
Explanation:
For computing the portfolio's alpha, first, we have to compute the expected rate of return. The formula is shown below:
Expected rate of return = Risk free rate of return + Beta × (realized rate of return - free rate of return)
= 7% + 1.15 × (12% - 7%)
= 7% + 1.15 × 5%
= 7% + 5.75%
= 12.75%
Now the portfolio alpha equal to
= Expected rate of return - portfolio realized rate of return
= 12.75% - 12.6%
= - 0.15%