There are different channels for attracting investment in different countries. The choice of a particular method that an economic entity will use is determined by the state regulation of investment processes in the country, the type and state of the economy, the level of development of individual sectors of the financial market, etc. The Russian economy and its financial market model are characterized by a significant superiority of credit institutions over non-credit financial institutions. The concentration of significant capital in the Russian banking sector determines the importance of these financial market participants in the investment processes taking place in the country. It is important to note that in recent years, there has been a process of even greater increase in the share of assets of banking organizations in the assets of the entire financial market. As a result, the value of this indicator is currently more than 80%. This situation is typical for many countries whose financial markets are usually considered to be emerging. Thus, one of the main participants in the investment process in our country and in a number of other countries is commercial banks, as entities that accumulate and are able to distribute huge investment resources. In this regard, issues related to the investment activities of commercial banks are becoming extremely important. One of the areas in which it is possible for banks to carry out investment activities is investing in securities. The article deals with the issues of regulation of investment activities of commercial banks in the securities market. The analysis of the composition and structure of investment portfolios of commercial banks is presented. The main trends in the investment activity of commercial banks in the securities market are identified. The article describes the prospects for the development of the investment policy of commercial banks in terms of the formation of securities portfolios.