Assignment 2 2025
Unique #:
Due Date: 29 August 2025
Detailed solutions, explanations, workings
and references.
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, QUESTION 1
a.
(i) Conditional variance today
(ii) Conditional standard deviation
(iii) If the current return is in line with expectation
That means
So the variance would fall (mean-revert) toward its long-run level when there’s no
shock; numerically it drops from 0.0012 to about 0.001107
b.
Why (three solid reasons):
1. Handles non-normal, fat-tailed returns.
CVaR (a.k.a. Expected Shortfall) directly targets tail losses without assuming
normality. Constrained MVO relies on mean and variance (an elliptical/near-normal
Varsity Cube 2025 +27 81 278 3372