The Effect of Optimism Bias and Over Confidence on Investment Decisions in Aceh Mediated by Herding

Abstract

The purpose of this research is to test and analyze the effect of optimism bias and over confidence in improving investment decisions in Aceh, mediated by herding variables. This type of research is survey research using a questionnaire as a data collection tool. The respondents who were used as the research sample were investors in IDX Aceh, totaling 115 people. Whereasdata analysis method in this study using Structural Equation Model(SEM) AMOS. The effect of biased optimism and over confidence is proven statistically significant in influencing investors' investment decisions at IDX Aceh. Likewise, there is a direct significant effect between the variable over confidence on investment decisions and the influence relationship between over confidence on investment decisions.IDX Aceh should focus on building investor confidence, by providing various trading trainings, and updating knowledge about stock analysis.Able to provide an in-depth understanding of the herding behavior of Islamic stock products in making investor decisions in various circles in Aceh so that they are interested in investing, especially buying shares. Investment achievement for IDX Aceh is not seen through how much profit the company generates, but how investors feel satisfied with the services and various pro-investor policies provided by the organization. So that the role of bias optimism, over confidence and herding is very crucial in the stock exchange (IDX Aceh) in ensuring the creation of superior, quality, professional and accountable investment decisions.