Investment activity is an important component of the financial and economic mechanism of the national economy. In the socio-economic turbulence inherent in Ukraine, significant challenges for the development of the state and its national economy, the role of investment activity in supporting socio-economic development at both the micro and macro levels is growing significantly. In this context, special attention is paid to the main characteristics of investment activity, and the subject of study is revealed in its systemic and structural features. The purpose of the article is to determine the systemic and structural aspects of investment activity in Ukraine, taking into account the influence of exogenous and endogenous drivers both at the level of enterprises and the state. The methodology used in this article consists of a systemic and structural analysis of investment activity in Ukraine, including the study of key components and factors, comparative analysis with other regions, and sectoral analysis. This comprehensive approach makes it possible to identify challenges and opportunities in the investment climate, which ultimately leads to the formulation of practical recommendations for improving investment activity in the country. The article examines the nature of investment activity in Ukraine at the current stage, emphasizing its systemic and structural aspects. The main risks and limiting factors for the adequate development of investment activities in Ukraine were identified both at the micro- and macro-levels. The main challenges to investment activity in Ukraine were studied with a focus on the main groups of stakeholders. Within the framework of the study, the main trends of investment activity in Ukraine were analyzed from the point of view of its system and structural architecture. The trends in the sectoral structure of foreign direct investments, as well as in the leading countries of their receipt are highlighted. The structure of the development of capital investments by spheres of economic activity, as well as the peculiarities of the financing of capital investments in their structural aspects were studied. In conclusion, based on the results of the research, scientific and practical proposals were made to support the development of investment activity in Ukraine in financial and economic, regulatory and legal, communication and promotion aspects. The conducted research can be useful for professional researchers, experts in financial and investment sphere, professional investors, business associations, financial institutions and state authorities. Prospects for future research are an extended analysis of the issues of the essence of investment activity from the point of view of its critical challenges for the creation of added value for stakeholders of different levels in a turbulent environment.