We examine the role of concurrent information in the striking increase in investor response to earnings announcements from 2001 to 2016, as measured by return variability and volume following Beaver (1968). We find management guidance, analyst forecasts, and disaggregated financial statement...

The earnings announcement premium, whereby a stock earns abnormal returns over its earnings announcement period, has been the subject of extensive research. We provide the first evidence that this premium has disappeared in the US in recent years. We show that the increased filings of material...