Organisation of Strategic Management of a Holding Structure under Conditions of Unpredictable Changes of Environment

The article develops a model of influence of environmental factors on strategic plans, which allows transformation of planned indicators into forecasted values. It presents a classification of main environmental factors, which identify risks of activity of engineering holding unions of enterprises - manufacturers of engineering products. It also conducts a cluster analysis with the use of a clusterisation method, based on calculation of k-averages. As a result of calculations, it provides a number of general criteria of rational selection of decision variants out of a multitude of possible ones, which are based on an analysis of the matrix of possible states of environment and decision alternatives. The offered types of managerial decisions under conditions of unpredictability give a possibility to properly correct strategy of development of holding structures.