In financial economics and accounting research, post–earnings-announcement drift or PEAD (also named the SUE effect) is the tendency for a stock’s cumulative abnormal returns to drift in the direction of an earnings surprise for several weeks (even several months) following an earnings announcement.
Once a firm's current earnings become known, the information content should be quickly digested by investors and incorporated into the efficient market price. However, it has long been known that this is not exactly what happens. For firms that report good news in quarterly earnings, their abnormal security returns tend to drift upwards for at least 60 days following their earnings announcement. Similarly, firms that report bad news in earnings tend to have their abnormal security returns drift downwards for a similar period. This phenomenon is called post-announcement drift.
This was initially proposed by the information content study of Ray J. Ball & P. Brown, 'An empirical evaluation of accounting income numbers', Journal of Accounting Research, Autumn 1968, pp. 159–178. As one of major earnings anomalies, which supports the counterargument against market efficiency theory, PEAD is considered a robust finding and one of the most studied topics in financial market literature.
Hypothesesedit
The phenomenon can be explained with a number of hypotheses. The most widely accepted explanation for the effect is investor under-reaction to earnings announcements.
Bernard & Thomas (1989)[1] and Bernard & Thomas (1990)[2] provided a comprehensive summary of PEAD research. According to Bernard & Thomas (1990), PEAD patterns can be viewed as including two components. The first component is a positive autocorrelation between seasonal difference (i.e., seasonal random walk forecast errors – the difference between the actual returns and forecasted returns) that is strongest for adjacent quarters, being positive over the first three lag quarters. Second, there is a negative auto correlation between seasonal differences that are four quarters apart.
Referencesedit
^Bernard, V. L., & Thomas, J. K. (1989). Post-Earnings-Announcement Drift: Delayed Price Response or Risk Premium? Journal of Accounting Research, 27, 1-36.
^Bernard, V. L., & Thomas, J. K. (1990). Evidence that stock prices do not fully reflect the implications of current earnings for future earnings. Journal of Accounting and Economics, 13(4), 305-340
Do Individual Investors Drive Post Earnings Announcement Drift? OSU Finance [?]
Dharmesh, V. K., & Nakul, S. (1995). contemporary issues in accounting. Post earnings announcement drift., ed 5th, p. 269.
post, earnings, announcement, drift, financial, economics, accounting, research, post, earnings, announcement, drift, pead, also, named, effect, tendency, stock, cumulative, abnormal, returns, drift, direction, earnings, surprise, several, weeks, even, several. In financial economics and accounting research post earnings announcement drift or PEAD also named the SUE effect is the tendency for a stock s cumulative abnormal returns to drift in the direction of an earnings surprise for several weeks even several months following an earnings announcement Contents 1 Cause and effect 2 Hypotheses 3 References 4 See alsoCause and effect editOnce a firm s current earnings become known the information content should be quickly digested by investors and incorporated into the efficient market price However it has long been known that this is not exactly what happens For firms that report good news in quarterly earnings their abnormal security returns tend to drift upwards for at least 60 days following their earnings announcement Similarly firms that report bad news in earnings tend to have their abnormal security returns drift downwards for a similar period This phenomenon is called post announcement drift This was initially proposed by the information content study of Ray J Ball amp P Brown An empirical evaluation of accounting income numbers Journal of Accounting Research Autumn 1968 pp 159 178 As one of major earnings anomalies which supports the counterargument against market efficiency theory PEAD is considered a robust finding and one of the most studied topics in financial market literature Hypotheses editThe phenomenon can be explained with a number of hypotheses The most widely accepted explanation for the effect is investor under reaction to earnings announcements Bernard amp Thomas 1989 1 and Bernard amp Thomas 1990 2 provided a comprehensive summary of PEAD research According to Bernard amp Thomas 1990 PEAD patterns can be viewed as including two components The first component is a positive autocorrelation between seasonal difference i e seasonal random walk forecast errors the difference between the actual returns and forecasted returns that is strongest for adjacent quarters being positive over the first three lag quarters Second there is a negative auto correlation between seasonal differences that are four quarters apart References edit Bernard V L amp Thomas J K 1989 Post Earnings Announcement Drift Delayed Price Response or Risk Premium Journal of Accounting Research 27 1 36 Bernard V L amp Thomas J K 1990 Evidence that stock prices do not fully reflect the implications of current earnings for future earnings Journal of Accounting and Economics 13 4 305 340 Do Individual Investors Drive Post Earnings Announcement Drift OSU Finance Dharmesh V K amp Nakul S 1995 contemporary issues in accounting Post earnings announcement drift ed 5th p 269 See also editEarnings response coefficient Momentum Retrieved from https en wikipedia org w index php title Post earnings announcement drift amp oldid 1084069052, wikipedia, wiki, book, books, library,
