This paper mainly examines if the financial performance and institutional ownership will have effect on the decision of attending conference call and the subsequent effects. The sample consisted of firms that had listed in Taiwanese Securities Exchange and Taipei Exchange from TEJ database during 2012 to 2018. The empirical results suggest that firms that have higher EPS than previous quarter tend to hold conference call, and firms with higher foreign investors holding tend to attend conference calls holding by brokers. Moreover, the empirical result also show that if firms attend conference call with good news, the institutional ownership will increase.