Subject. We consider a portfolio of financial resources as a complex money system generated from various sources of economic activity financing. It is used to fund business goals of the enterprise and includes financial resources with various cost characteristics, level of financial risk, term of use, and other key parameters. Objectives. The aim is to underpin the viability of cluster approach as a methodological tool for developing the theory of formation of efficient portfolio of financial resources through formulation of tenets and theoretical trajectories of movement for various clusters of financial resources. Methods. The study rests on the cluster approach to simulate the process of financial portfolio formation. We apply basic provisions of the systems theory and the theory of economic growth and development. Results. We performed clustering of financial resources by type of sources of finance, formed a structure of clustering matrix, and formulated criteria of positioning the financial portfolio of the enterprise. The paper determines trajectories of movement of typical clusters of financial resources and possible alternative financial strategies, resulting in changes in the key parameters. Conclusions. If implemented, the cluster approach enables to expand the theoretical base used by financial managers for building an efficient portfolio of financial resources, and to meet the requirements for cost, risk, and stability of the latter, during the entire period of formation.
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