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The diversity of investment methods and the complexity of decision-making process have solidly grown in recent decades. Thus a growing need is felt for an overall and well-integrated financial model. In the area of portfolio formation, such model should include the key issue of investment time horizons, experimental modalities of investment such as market irregularities, and diversification in conjunction with the elements of fundamental approach so as to direct the portfolio towards a dominant and efficient position. Meeting this need will play a
examine model used in the decision - making for portfolio investment. In the final analysis, the research proves that it is possible to factor in the investor’s vision towards the various criteria and priorities of decision-making in the financial models of portfolio on one hand, and to use the “ideal planning” as a mathematical method on the other hand.