Computation of variance of portfolio
Suppose there are three risky assets, A, B and C with the following expected returns, standard deviations of returns and correlation coefficients.
E (rA¬)= 4% S.DEVA=5% rA, B=0.7
E (rB¬)=5% S.DEVB=7% rA, C=-0.2
E (rC¬) =15% S.DEVC=10% rB,C=0.3
Solving for the Global Minimum Variance Portfolio
Consider a world where there are no risk free assets, and just these three risky assets. Suppose short sales are permitted. Solve for the weights and variance of the global minimum variance portfolio. If short sales are not permitted is the solution affected?