Has the Information Content of Quarterly Earnings Announcements Declined in the Past Three Decades?

2002-06-01articleJournal of Accounting Research444 citationsclosed

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Financial Markets and Investment Strategies Auditing, Earnings Management, Governance Financial Analysis and Corporate Governance

Abstract

This paper examines changes in the information content of earnings over the past three decades using the two metrics from Beaver [1968]: abnormal trading volume and abnormal return volatility. We find no evidence of a decline in the information content of earnings announcements over the past three decades, as measured by both abnormal trading volume and return volatility around quarterly earnings announcements. If anything, our results suggest an increase over time in the informativeness of quarterly earnings announcements. Variables reflecting changes in firm‐specific factors account for a portion of the observed increase.

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