The article presents scientific views and definitions on the nature and types of
investment risks. Based on the definition, proposals for grouping and classifying investment risks
are given. Classification criteria and management factors are also described

The article examines the essence of the risks of innovation and defines the main classification of risks, signs of their grouping, the interdependence of the concepts of “risk” and “uncertainty”, the essence of innovation risk, systematization of risks in innovation, innovation and various approaches to their systematization and grouping.

Knowledge of optimal monetary policy and frequently the rules of optimization in flexible inflation targeting assign central banks the task of developing all types of cyclical policies. The goal of optimal inflation policy is to achieve macroeconomic stability and stimulate sustainable economic growth. To determine the amount of monetary policy associated with the rule of monetary policy and to establish the proposed optimal inflation target, we use the DSGE econometric model. The relationship between r (refinancing rate) and the optimal inflation target has a downward slope. Although the growth of the optimal inflation level is smaller than the decrease in r, it has been found that in areas with current empirical significance, the slope of the relationship is close to -1. This angle parameter is sufficient to ensure uncertainty. It was found that in strategies such as price level setting and their diversity, the optimal inflation target is significantly lower and less sensitive to r."*

This article analyzes the behavior of business entities in the investment process in the economic theory of Dj. M. Keynes. The article examines the role of predel efficiency, interest rates and uncertainty as key factors in investment decisions. It also explains how economic activity can increase as a result of initial investment through the Keynesian multiplier model. With the help of modern economic research and criticism, the Keynesian theory will be reviewed more broadly and its adaptation to new conditions will be analyzed.