The global petrochemical industry is one of the most dynamically developing - it is twice as fast as the world GDP in terms of growth rates. Over the past 20 years, significant changes have taken place in this industry. New major players have appeared and the structure has changed. As for Russia, its share in the global petrochemical production is about 2.5%. At the same time, Russia is one of the world leaders in the production and export of hydrocarbon raw materials, where the country's share is about 12 - 19%. Currently, a steady trend in the development of polymer materials science has been observed and it will continue to develop. In the next 15 years, the demand for petrochemical products will grow by an average of 4% per year. The purpose of this study is to analyze the financial standing, assess the prospects for development and optimize the activity of one of the largest systemically important organizations of the petrochemical industry in Russia - PJSC "SIBUR Holding" in the conditions of the macroeconomic instability. To implement the research the authors have collected financial data from the reports of financial results and the balance sheets of the company. They have selected the key performance and solvency indicators in particular, liquidity, business activity, profitability, solvency and investment attractiveness. Particular attention is paid to the factors of financial risk affecting the opportunities for business expansion. Econometric modeling methods were used to determine the company's development prospects that are dependent on the internal policy of cash flow management, accounts receivable, debt, external influence of inflationary risk. Research results suggest that the continuous cash flow, namely, the formation of a policy for managing accounts payable in the crisis, has a significant impact on the further development of the company. © Universal Journal of Accounting and Finance 2021.