We find that earnings announcements that follow equity issues and buyback announcements have predictable market reactions. Four-factor abnormal returns to earnings following buyback announcements are higher by 5.1% than similar returns to earnings following equity issues over the (-1,+30)...

This study finds that firm life stage affects investor behavior around earnings announcements. Introduction and decline stage companies exhibit significantly less positive cumulative abnormal returns (CARs) around positive earnings surprises and more negative CARs around negative earnings...