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Has the Information Content of Quarterly Earnings Announcements Declined in the Past Three Decades?
Author(s) -
Landsman Wayne R.,
Maydew Edward L.
Publication year - 2002
Publication title -
journal of accounting research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.767
H-Index - 141
eISSN - 1475-679X
pISSN - 0021-8456
DOI - 10.1111/1475-679x.00071
Subject(s) - earnings , volatility (finance) , economics , earnings response coefficient , post earnings announcement drift , monetary economics , business , financial economics , accounting
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.