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Unifying Underreaction Anomalies

TIMOTHY C. JOHNSON
London Business School; University of Illinois
ANDREW JACKSON
Barclays Global Investors; London Business School

May 2002
 

Abstract:     
This paper asks whether momentum and post-event drift are manifestations of the same underlying mechanism or whether they are separate phenomena. We find that both effects can be attributed to persistence in returns following news which affects expected earnings or earnings growth. Holding these quantities fixed, there is no momentum effect, nor is there post-event drift for our sample of events.

 
Keywords: momentum, underreaction, post-event drift
 
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Suggested Citation
Johnson, Timothy C. and Jackson, Andrew, "Unifying Underreaction Anomalies" (May 2002). Available at SSRN: http://ssrn.com/abstract=298352 or DOI: 10.2139/ssrn.298352

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Contact Information for TIMOTHY C. JOHNSON (Contact Author)


Email address for TIMOTHY C. JOHNSON
London Business School
Sussex Place
Regent's Park
London NW1 4SA
United Kingdom

Email address for TIMOTHY C. JOHNSON
University of Illinois
Urbana
Champaign , IL 61820
United States


Contact Information for ANDREW JACKSON


Email address for ANDREW JACKSON
Barclays Global Investors
United States

Email address for ANDREW JACKSON
London Business School
Sussex Place
Regent's Park
London NW1 4SA
United Kingdom


 
 


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