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Foreign vs domestic investors and the post‐announcement drift

G. Geoffrey Booth (Department of Finance, Michigan State University, East Lansing, Michigan, USA)
Juha‐Pekka Kallunki (Department of Accounting, University of Oulu, Oulu, Finland)
Petri Sahlström (Department of Accounting, University of Oulu, Oulu, Finland)
Jaakko Tyynelä (Department of Accounting and Finance, University of Vaasa, Vaasa, Finland)

International Journal of Managerial Finance

ISSN: 1743-9132

Article publication date: 28 June 2011




This paper aims to investigate who causes post‐announcement drift and whether this drift is observed for various types of news announcements.


Using Finnish share ownership data, the authors examine the trading behavior of foreign and domestic investors during the post‐announcement periods of scheduled earnings and unscheduled non‐earnings announcements.


The results show that the post‐announcement drift exists for both types of news, but only if the news is negative. As a group, foreign investors react first by selling shares of firms reporting negative information. Domestic investors act in the opposite manner.


The results imply that the post‐announcement drift is a special case of a more general post‐disclosure phenomenon and that investor differences (most likely information processing skills) is one likely explanation for its pervasiveness.



Geoffrey Booth, G., Kallunki, J., Sahlström, P. and Tyynelä, J. (2011), "Foreign vs domestic investors and the post‐announcement drift", International Journal of Managerial Finance, Vol. 7 No. 3, pp. 220-237.



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Copyright © 2011, Emerald Group Publishing Limited

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