In: Finance
Suppose that the index model for stocks A and B is estimated from excess returns with the following results:
RA =0.03 + 0.7RM +
eA
RB = -0.02 + 1.2RM + eB
σM = 0.2
R-squareA = 0.3;
R-squareB = 0.25
Assume you create for portfolio Q with investment proportions of 0.50 in P, 0.30 in the market index, and 0.20 in T-bills, portfolio P is composed of 60% Stock A and 40% Stock B. What is the standard deviation of the portfolio Q?
0.2766
0.1831
0.4800
0.2556