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* Existing control system.Thus, optimisation of investment portfolios of corporation on
Regional level should be constructed on the basis of the accurate analysis and
Should be planned so that to optimise the internal Corporation activity.
Thereupon, the basic criterion of optimisation of a portfolio is the maximum
, (2.1)
Where
With - criterion function;
I - quantity of investment values of corporation;
reti - the profit rate on i investment values;
vi - relative density of i investment values in an investment portfolio Corporations;
J - quantity of risks of corporation;
riij - the rate of j kinds of risk for i investment values;
vij - relative density of the i investment values, subject j To risk kind, in an investment portfolio of corporation.
Thus restrictions can look as follows:
;
;
; ; ; .
If at realisation of investment strategy, it is formed a little Investment portfolios, the formula (2.1) can be written down the following In the image:
,
Where
N - quantity of investment portfolios of corporation.
Within the limits of a task in view process of optimisation of an investment portfolio
Corporations or sets of investment portfolios can be described in Kind of the basic scheme (fig. 2.9) 27.
Optimisation process in this case represents the closed Sequence of actions, that is cyclic procedure, in which on Stage of the account and inventory of investment values it is checked and The list of investment values of corporation is corrected, are defined The basic characteristics of these values.
Fig. 2.9. Process of optimisation of an investment portfolio of corporation
At a stage of an expert estimation interrogation of experts for definition is spent
The average rate by each kind of risk for each investment value, and
Also the rate of return from each investment value and a portfolio is estimated
As a whole.
After an estimation of the initial data and definition of all necessary conditions
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