Hadbaa, H.Boutti, R.2019-05-022019-05-022019Hadbaa, H., Boutti, R. (2019). Behavioral Biases Influencing the Decision Making of Portfolio Managers of Capital Securities and Traders in Morocco. Financial Markets, Institutions and Risks, 3(1), 92-105. http://doi.org/10.21272/fmir.3(1).92-105.2019.http://essuir.sumdu.edu.ua/handle/123456789/72795Behavioral finance is a new discipline that has emerged to explain the anomalies in the financial markets (ex: the succession of speculative bubbles and stock market crashes). It is based on two assumptions namely the irrationality of investors and limit arbitration. Behavioral finance is based on prospect theory and the psychological biases.encneповедінкові фінансиповеденческие финансыehavioral financeпсихологічні упередженняпсихологические предубежденияpsychological biasesприйняття рішенняпринятие решенияtaking decisionнераціональність інвесторівнерациональность инвесторовirrationality of investorsBehavioral Biases Influencing the Decision Making of Portfolio Managers of Capital Securities and Traders in MoroccoArticle