Diana Bychenko

Environmental responsibility mechanism in the public sector of the economy has an important sense in UN Sustainability Development Goals achievement, as well as in ensuring the competitiveness of the state-owned companies and the state as a whole. Sustainability concept, concept of “smart cities and smart communities” and the implementation of public administration reform, the necessity to increase the transparency of state-owned companies and the responsibility of municipalities to communities determine the reasonability and urgency in environmental responsibility mechanism development. Systematization and comparative analysis of world and national experience of environmental responsibility mechanism development in the public sector of the economy were made. The author’s approach to the structuring of the mechanism of environmental responsibility in the public sector was developed. Public policy peculiarities implementation in the field of environmental responsibility were investigated considering the levels of regulation of such liability: in state-owned companies as models for other sectors of the economy; in public authorities and municipalities.

This paper is devoted to the comparing stock portfolios of the largest conventional and responsible Ukrainian companies as the basis for substantiating the structure of an optimal investment portfolio in the current conditions of development of the financial market of Ukraine. The empirical basis of the research was the data of quotations of shares of 6 most liquid conventional and 6 responsible companies in the Ukrainian and Warsaw exchanges. The methodological basis of calculations was the classic Markowitz portfolio optimization model. The key hypothesis of the research was to check that the conventional investment portfolios of Ukrainian companies outperform the responsible investment portfolios by their parameters (return, risk). This hypothesis was rejected. The obtained results have not only theoretical significance – both the rationale for the threat of responsible investment in Ukraine and the applied value for market participants in terms of investment decisions making, taking into consideration the ESG criteria, and the formation of investment portfolios from shares of the responsible companies, the key parameters of which exceed the conventional portfolios.