Studying the fundamentals and concepts of sustainability of small and medium-sized businesses based on financial indicators

Performance evaluation of companies and small businesses is a process used to collect, analyze and report information according to the performance of an individual, group, organization, system or department. thus this research was done with the aim of providing a model to evaluate the performance of financial managers in the public sector. this is quantitative and explanatory descriptive research. the statistical population includes the managers of small and medium-sized companies admitted to the tehran stock exchange in 1400 and the selection of companies with a maximum of 250 employees was selected with a targeted sampling of about 90 managers. the data collection tool was a researcher-made questionnaire, the data obtained from which was analyzed with lisrel software version 8.5 and with the help of structural equation technique. rate and auxiliary components have a direct and significant effect on the dynamic stability of small and medium businesses in the tehran stock exchange. also, the rate variable indirectly has a positive effect on the dynamic stability of small and medium businesses in the tehran stock exchange through a positive effect on the level components. according to the proposed dynamic model of small and medium-sized companies on the stock exchange, it seems that managers should use strategic support tools to improve the conditions and increase the financial stability in order to reduce costs.