نوع مقاله : مقاله پژوهشی
عنوان مقاله English
نویسندگان English
Classical economics and the study of financial markets from a normative point of view have placed their rules in the rationality of economic factors. The main hypothesis around decision-making is based on rationality. On the other hand, investors do not act rationally; on the contrary, they show many biases that lead to poor investment decisions in certain areas. These cognitive errors are due to the inability of investors to know the movement of the market for the following periods, which forces them to make biased decisions. In this article, we have analyzed the behavior of investors in the Tehran Stock Exchange to see if they are prone to behavioral distortions under conditions of information ambiguity and information shock. To achieve the goal of the research, the data of 106 sample companies were collected in the period of 2018-2019 and were analyzed by means of descriptive-correlation analysis by performing multiple regression test. The findings showed that there is only a significant relationship between the internal information shock (fundamental changes in institutional ownership) and the loss-making and short-sighted behavior of investors, and no significant relationship was found with other internal and external shocks. Also, there is no significant relationship between internal and external shocks and information salience behavioral bias. There is no significant relationship between information ambiguity and information salience, short-sighted bias of investors. There is a significant relationship between information ambiguity and investors' loss aversion bias, but no significant relationship was found with information ambiguity and investors' loss aversion bias.
کلیدواژهها English
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