The article systematizes the organizational and legal forms of legal entities of financial and non-financial corporations under the control of the state in the Russian Federation, which made it possible to outline the boundaries of the corporate component of the public sector of the economy. A system of indicators for quantitative measurement of this segment of the national economy is proposed. The most important indicators of the financial and economic activities of federal joint-stock companies (JSC) and federal state unitary enterprises (FSUE) are highlighted, data on which are presented on the website of the Federal State Statistics Service. The analysis of the dynamics of the number of federal JSCs and FSUEs in 2016-2020 was carried out, as a result of which a tendency towards a decrease in their number in Russia was revealed. An assessment of the share of profitable federal joint-stock companies and federal state unitary enterprises for each type of activity is given in comparison with this indicator on average in Russia. The dynamics of the profit received by federal JSCs and FSUEs and the share in the total volume of profits in the Russian Federation in 2018-2019 were also investigated. It was revealed that in Russia the municipal level in most information sources on the functioning of the state sector of the economy is not covered by statistical observation. It is noted that the work of the Analytical Center under the Government of the Russian Federation helps to compose the idea of ​​the activities of unitary enterprises at all three levels of government. At the same time, the available information base makes it possible to characterize the activities of only joint-stock companies of the federal level. In this regard, for a more complete characterization of the scale of the corporate component of the public sector of the economy, it is proposed to analyze the share of the largest companies with state participation (KSU) in the country’s aggregate economic indicators, information about which is provided by various rating agencies. It has been proved that in terms of capitalization of KSUs and the number of employed in them, Russia is ahead of many developed countries. This allows us to conclude that the Russian public sector is being built on the basis of a “corporate model”.