You own a stock portfolio invested 20 percent in Stock Q, 25 percent in Stock R, 15 percent in Stock S, and 40 percent in Stock T. The betas for these four stocks are 1.23, 1.66, 0.98, and 1.68, respectively. What is the portfolio beta?
Portfolio beta=Respective beta*Respective weight
=(0.2*1.23)+(0.25*1.66)+(0.15*0.98)+(0.4*1.68)
which is equal to
=1.48
You own a stock portfolio invested 20 percent in Stock Q, 25 percent in Stock R,...