sing a dataset record account-level trades and orders from Taiwan Futures Exchange, we examine whether the variations of risk taking follows the overconfidence bias for four types of traders, including individuals, foreign institutions, domestic institutions, and foreign institutional traders. Our findings show that when investors are individuals and domestic institutions, the variations of trading activities for overconfident investors are greater than others. However, the results are not significant for foreign institutions and foreign institutional traders. Therefore, we demonstrate that investors take more risk following overconfidence. / Using a dataset record account-level trades and orders from Taiwan Futures Exchange, we examine whether the variations of risk taking follows the overconfidence bias for four types of traders, including individuals, foreign institutions, domestic institutions, and foreign institutional traders. Our findings show that when investors are individuals and domestic institutions, the variations of trading activities for overconfident investors are greater than others. However, the results are not significant for foreign institutions and foreign institutional traders. Therefore, we demonstrate that investors take more risk following overconfidence.