Prof. Dr. Nadia Velinova - Sokolova is a lecturer in the Department of Finance and Accounting at the Faculty of Economics and Business Adminisration, Sofia University "St. Kliment Ohridski ”. She received her education at the University of National and World Economy - bachelor's and master's degrees. She defended her doctoral dissertation in 2004 in the field of derivative financial instruments. She lectures at Sofia University in the disciplines "Capital marketq derivatives and risk management". "Pronciples of Taxation" "Derivative Financial Instruments", "Practical Course in Accounting and Finance", "Accounting and Finance for Managers", "Accounting of Insurance and Insurance Companies" and "Accounting in English”, "Insurance", "Insurance and risk management". Her research interests are in the field of analysis and accounting of financial instruments, the activities of non-bank financial institutions, the development of portfolio theory, as well as the analysis and assessment of risk.