Question: As discussed in Section 8.3, the Markowitz model uses the variance of the portfolio as the measure of risk. However, variance includes deviations both below
As discussed in Section 8.3, the Markowitz model uses the variance of the portfolio as the measure of risk. However, variance includes deviations both below and above the mean return. Semivariance includes only deviations below the mean and is considered by many to be a better measure of risk.(a)Develop a model that minimizes semivariance for the Hauck Financial data given in the file HauckData with a required return of 10%.
Assume
that the five planning scenarios in the Hauck Financial Services model are equally likely to occur.Hint: Modify model (8.10)-(8.19). Define a variabledsfor each scenario and let
dsRRs
with
ds0.
Then make the objective function:
Min
| 1 |
| 5 |
| 5 | |
| s= 1 |
ds2.
Let
| FS | = | proportion of portfolio invested in the foreign stock mutual fund |
| IB | = | proportion of portfolio invested in the intermediate-term bond fund |
| LG | = | proportion of portfolio invested in the large-cap growth fund |
| LV | = | proportion of portfolio invested in the large-cap value fund |
| SG | = | proportion of portfolio invested in the small-cap growth fund |
| SV | = | proportion of portfolio invested in the small-cap value fund |
| R | = | the expected return of the portfolio |
| Rs | = | the return of the portfolio in years. |
Min
ds2 | ||||||||||||||||
| s.t. | ||||||||||||||||
| R1 | = | |||||||||||||||
| R2 | = | |||||||||||||||
| R3 | = | |||||||||||||||
| R4 | = | |||||||||||||||
| R5 | = | |||||||||||||||
FS+IB+LG+LV+SG+SV= | ||||||||||||||||
=R | ||||||||||||||||
d1R | ||||||||||||||||
d2R | ||||||||||||||||
d3R | ||||||||||||||||
d4R | ||||||||||||||||
d5R | ||||||||||||||||
R= | ||||||||||||||||
FS,IB,LG,LV,SG,SV |
(b)Solve the model developed in part (a) with a required expected return of 10%. (Round your answers to three decimal places.)
FS
=
IB
=
LG
=
LV
=
SG
=
SV
=Objective value
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