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The purpose of this paper is to develop a strategy for managing the innovation and investment activity of an industrial enterprise at various stages of its life cycle. Based on the analysis and assessment of the efficiency of the implementation of existing strategies, the relevant features of innovation and investment activities of enterprises have been identified. A methodological approach to assessing the meso- and macroeconomic effect of the implementation of transformations at the enterprise depending on the stage of the life cycle is proposed, and an algorithm for determining the most optimal development strategy, which is based on an analysis of the parameters of predicted stability, is compiled. As a result of the study, a new approach to the formation of innovative and investment development of an enterprise was formed, which allows taking into account not only the change in the internal indicators of the economic activity of an enterprise, but also the change in external parameters. In addition, the proposed approach allows determining the economic effect on the basis of a combined assessment of the dynamics of introducing product, technological and managerial innovations, taking into account the efficiency of attracting investment resources that ensure the implementation of innovative transformations.

The aim of this study is to develop methods to reduce the risk load on investment and construction enterprises based on the principles of self-organization. A model of formalizing the vector control function in the process of identifying a company in the investment and construction sector as a complex self-organizing system is proposed. A model of vector optimization of risk reduction for investment and construction companies has been formed, taking into account the difference in their interests and capabilities depending on the degree of integration. The optimality criteria of the model make it possible to reduce the risk coefficient by reducing the potential loss, increasing profits, and optimizing the ratio of own and borrowed funds. As a result of the study, a method was developed for the formation of a risk reduction mechanism in investment and construction companies, which is a set of step-by-step managerial actions for identifying risks and conducting anti-risk measures.

The purpose of this paper is to develop practical recommendations for managing the innovation activities of small and large enterprises in the face of increasing competition. As a result of the study, the peculiarities of managing the innovation activity of a small manufacturing enterprise based on the application of the diffusion of innovation method for such management functions as management, production, marketing, and human resources have been identified and generalized. A mechanism has been developed to implement the scientific and technical policy of small manufacturing enterprises, the key feature of which is the possibility of introducing innovations. An algorithm for the formation of the most optimal program for the innovative development of a small manufacturing enterprise is proposed, within the framework of which the innovation process is proposed to be considered in the form of logically indivisible organizational, managerial and technological operations, taking into account the assessment of the size and form of the required resource support for each operation, as well as its economic efficiency. As a result of the study, a technique was obtained that allows determining the most optimal program of innovative development based on the analysis and comparison of their necessary resource support and economic effect from implementation.