In a competitive information market, a single information source can only dominate other sources individually, not collectively. We explore whether earnings announcements constitute such a dominant source using Ball and Shivakumar's (2008) R2 metric: the proportion of the variation in annual...

Prior research concludes that financial analysts do not process public information efficiently in generating their earnings forecasts. The OLS regression-based tests used in prior studies assume implicitly that analysts face a quadratic loss function, or that analysts minimize their squared...

Earnings announcement days on average provide more information to the stock market than any other days in each quarter. In particular, the proportions of the variation in annual returns explained by returns on days with dividend announcements, management forecasts, preannouncements, or 10-K and...