Answer: 4%
Explanation:
Abnormal returns are the excess actual returns received over the expected return.
The actual return can be calculated as;
= [tex]\frac{New Stock price + dividends - Old Stock Price}{Old stock price}[/tex]
= [tex]\frac{12 - 10 + 1}{10}[/tex]
= 30%
The expected return according to CAPM;
Expected return = Risk free rate + beta( market return - risk free rate)
= 16% + 1 ( 26% - 16%)
= 26%
Abnormal return = 30% - 26%
= 4%