Since short sellers are considered sophisticated traders and respond to corporate news and public information in a timely manner, corporate earnings announcements containing new information can be used to update the beliefs of short sellers and affect their investment strategies. Abnormal market...

Do insiders trade on private information about earnings? We address this question exploiting the discontinuity in the term structure of option prices around the announcement date, to obtain a daily and forward-looking measure of the informativeness of the next earnings announcement. This measure...