Autocorrelation structure of forecast errors from time-series models: Alternative assessments of the causes of post-earnings announcement drift

Autocorrelation structure of forecast errors from time-series models: Alternative assessments of... This paper demonstrates that the evidence supporting the hypothesis that post-earnings announcement drift (PEAD) is caused by investors’ failure to incorporate the implications of current earnings for future earnings is (also) consistent with researchers’ over-differencing an already stationary time-series. Specifically, we show the evidence is driven by a subset of firms where over-differencing of quarterly earnings in estimating earnings surprises is most likely to have occurred. Given the persistence of the PEAD over time, our alternative explanation suggests that the prior research investigating the causes for the PEAD overestimates investors’ naivete. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Accounting and Economics Elsevier

Autocorrelation structure of forecast errors from time-series models: Alternative assessments of the causes of post-earnings announcement drift

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Publisher
Elsevier
Copyright
Copyright © 2000 Elsevier Science B.V.
ISSN
0165-4101
DOI
10.1016/S0165-4101(00)00006-9
Publisher site
See Article on Publisher Site

Abstract

This paper demonstrates that the evidence supporting the hypothesis that post-earnings announcement drift (PEAD) is caused by investors’ failure to incorporate the implications of current earnings for future earnings is (also) consistent with researchers’ over-differencing an already stationary time-series. Specifically, we show the evidence is driven by a subset of firms where over-differencing of quarterly earnings in estimating earnings surprises is most likely to have occurred. Given the persistence of the PEAD over time, our alternative explanation suggests that the prior research investigating the causes for the PEAD overestimates investors’ naivete.

Journal

Journal of Accounting and EconomicsElsevier

Published: Dec 1, 1999

References

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