According to contemporary investment theory it is safer to diversify your portfolio by selecting a variety of investments rather than choosing a single investment option. Using the problem solved in class add constraints so that each fund type is used for a minimum of 5% of the total portfolio. (the optimal solution should indicate to total annual return of 17.56%) Complete the same SolverTable by changing beta with the new model that incorporates the new constraints. Describe the differences between the two sets of SolverTable results. What is your conclusion about portfolio diversification as it relates to risk tolerance (changes in the beta)?
this is the question solved in class
Please leave your calculation below
thanks!
The Beta(risk) of products range from 0.43 -1.13. An investor should have a risk tolerance of at least 0.43 if he wants to invest in any of these products. The maximum risk due to investment is 1.13
Option 1- Initial question
We need to
Decision variable
xi= the percent of investment ion each product
i=1,2,3,4,5,6
objective
maximize
Profit= 18.38 X1 + 18.62 X2 + 15.15 X3 + 18.83 X4 + 11.02 X5 + 5.52 X6
Constraints
1.13 X1 +1X2+0.77X3+0.92X4+0.94X5+0.43X6 ≤1.25
X1 +X2+X3+X4+X5+X6 = 1
Xi ≥ 0 (non-negativity )
Cells |
Name |
Final Value |
Shadow Price |
RHS Value |
Allowable Increase |
Allowable Decrease |
D10<=F10 |
Risk tolerance Aggressive growth |
0.92 |
0 |
1.25 |
1E+100 |
0.33 |
1,25 + ( 1E+100) à (huge number)
1.25- 0.33 =0.92
Between risk tolerance values of 0.92 and 1,25 + ( 1E+100), the shadow price of risk tolerance is 0. The constraint is non-binding ie risk tolerance is not a limiting factor of the profit, within this range of value
Option 2- After adding an additional constraint of
Xi ≥ 0.05
Cells |
Name |
Final Value |
Shadow Price |
RHS Value |
Allowable Increase |
Allowable Decrease |
D10<=F10 |
Risk tolerance Aggressive growth |
0.9035 |
0 |
1.25 |
1E+100 |
0.3465 |
0.9035 + ( 1E+100) à (huge number)
0.9035 - 0.3465=0.557
Between risk tolerance values of 0.557 and 0.9035 + (1E+100) the shadow price of risk tolerance is 0. The constraint is non-binding ie risk tolerance is not a limiting factor of the profit, within this range of value
Comparison
Comparing the two, we find that lower limit of risk tolerance range has increased for the second option. So even if the risk tolerance of investor decreases to a very lower level i.e. he becomes very risk averse, the profit is not going to be affected
So, with portfolio diversification, even an investor with lower risk tolerance can invest and can reap similar profit
According to contemporary investment theory it is safer to diversify your portfolio by selecting a variety of investment...
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