This study tests the impact of usage of Twitter as a microblogging service provider on shareholders’ returns and abnormal returns. In accordance with this purpose, two portfolios were created based on measurement of whether firms had a Twitter account and, if so, their number of followers and...

This study tests the impact of usage of Twitter as a microblogging service provider on shareholders' returns and abnormal returns. In accordance with this purpose, two portfolios were created based on measurement of whether firms had a Twitter account and, if so, their number of followers and...

This study examines whether investors’ attitudes toward ambiguity can explain cross-sectional stock returns by investigating the relationship between future stock returns and option-implied volatilities as well as implied third moments. We find that investors’ attitudes toward different...