Analysis of the role of operator companies in the rail freight market in terms of competition and multi-agency is carried out in this article. It emphasizes the importance of choosing competitive strategies and identifying dominance and monopolization of markets. The methods of SWOT-analysis and Porter's analysis are used to assess the competition of operator companies. In addition, the Lind, Herfindahl-Hirschman and market concentration indices are important indicators of competition. Indices were calculated for each segment of the rolling stock. An assessment is given to the rolling stock operating market. Competition assessment results help operators identify their competitive strengths and weaknesses, and take the necessary steps to strengthen their market position.