The aim of this paper is to investigate individual overconfidence on the Tunisian stock market. This was achieved by administrating a questionnaire and by collecting empirical evidence about Tunisian individual investors. The survey is for exploratory purpose and it is based on multiple factorial correspondence analyses. The results reveal that Tunisian investors suffer from the overconfidence bias. In fact, they are confident about their intuition; they consider themselves lucky and trade aggressively. Besides, they use different sources of information when they choose their stocks.