(I)
We calculate daily return. For example for daily return on 28-01-2011= =(C3-C2)/C2 = -0.00781
Then, we average out the daily returns for the given time period = =AVERAGE(D3:D22) = 0.13%
Therefore, the mean return of the share price is 0.13%
(II)
a. We have, Investment amount = 5000000; Return =0.13%; daily standard deviation σdaily = 0.68%; 5% level of significance = 1.65
[0.13%-(1.65 x 0.68%)] = -0.99%
Therefore, Var daily = 5000000 x 0.99% = 49500.
b. monthly standard deviation σmonthly = 0.68% x (20 is the number of trading days in a month)
= 3.04%
VAR =5000000 x 1.65 x 3.04% = 250800
c.
annual standard deviation σannual= 0.68% x (250 is the number of trading days in an year)
= 10.75%
VAR annual= 5000000 x 1.65 x 10.75% = 886875
(II) The limitation of delta normal method is that
In order to address these limitations, we can use Monte Carlo Simulation method. This is the most sophisticated method and allows any distribution and non-linear securities.
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