Following are the details of a portfolio consisting of three shares:
Share Portfolio weight Beta Expected return in % Total variance
A 0.20 0.40 14 0.015
B 0.50 0.50 15 0.025
C 0.30 1.10 21 0.100
Standard Deviation of Market Portfolio Returns = 10%
You are given the following additional data:
Covariance (A, B) = 0.030
Covariance (A, C) = 0.020
Covariance (B, C) = 0.040
Calculate the following:
i. The Portfolio Beta
ii. Residual variance of each of the three shares
iii. Portfolio variance using Sharpe Index Model
Portfolio variance (on t e basis of modern portfolio theory given by Markowitz)
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