How Important are Earnings Announcements as an Information Source? PDF Download

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How Important are Earnings Announcements as an Information Source?

How Important are Earnings Announcements as an Information Source? PDF Author: Sudipta Basu
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Languages : en
Pages : 40

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Book Description
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 returns explained by the four quarterly earnings announcement returns. We find that the earnings announcement days' R2 is 11 percent -- higher than the corresponding R2 of days with dividend announcements, management forecasts, preannouncements, 10-K and 10-Q filings, and their amendments, and comparable to that of the four days with largest realized absolute return in a year. Additional analysis reveals that earnings announcements convey extreme bad news as often as management forecasts and preannouncements; for any other type of news earnings announcements are much more frequent. We conclude that earnings announcements are an important source of new information in the equity market.