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Market uncertainty,market sentiment,and the post-earnings announcement drift
Authors:Ron Bird  Daniel F. S. Choi  Danny Yeung
Affiliation:1. Paul Woolley Centre for the Study of Capital Market Dysfunctionality, University of Technology Sydney, Sydney, Australia
2. Waikato Management School, The University of Waikato, Hamilton, New Zealand
Abstract:Post-earnings announcement drift (PEAD) which was first identified over 40 years ago seems to be as much alive today as it ever was. Numerous attempts have been made to explain its continued existence. In this paper we provide evidence to support a new explanation: that the PEAD is a reflection of the level of market uncertainty and sentiment that prevails during the post-announcement period. The overriding conclusion from our analysis is that both uncertainty and sentiment play a central role in determining investor behaviour and it is this behaviour that ultimately determines the pricing that is observed in financial markets.
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