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http://ssrn.com/abstract=428160
 
 

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Momentum and Post-Earnings-Announcement Drift Anomalies: The Role of Liquidity Risk


Ronnie Sadka


Boston College - Carroll School of Management


Journal of Financial Economics, Forthcoming
EFA 2004 Maastricht Meetings Paper No. 5290

Abstract:     
This paper investigates the components of liquidity risk that are important for asset-pricing anomalies. Firm-level liquidity is decomposed into variable and fixed price effects and estimated using intraday data for the period 1983-2001. Unexpected systematic (market-wide) variations of the variable component rather than the fixed component of liquidity are shown to be priced within the context of momentum and post-earnings-announcement drift (PEAD) portfolio returns. As the variable component is typically associated with private information (e.g., Kyle (1985)), the results suggest that a substantial part of momentum and PEAD returns can be viewed as compensation for the unexpected variations in the aggregate ratio of informed traders to noise traders.

Number of Pages in PDF File: 46

Keywords: Liquidity risk, Transaction costs, Price impact, Asset pricing, Momentum trading

JEL Classification: G12, G14, D82

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Date posted: September 9, 2003  

Suggested Citation

Sadka, Ronnie, Momentum and Post-Earnings-Announcement Drift Anomalies: The Role of Liquidity Risk. Journal of Financial Economics, Forthcoming; EFA 2004 Maastricht Meetings Paper No. 5290. Available at SSRN: http://ssrn.com/abstract=428160 or http://dx.doi.org/10.2139/ssrn.428160

Contact Information

Ronnie Sadka (Contact Author)
Boston College - Carroll School of Management ( email )
140 Commonwealth Avenue
Chestnut Hill, MA 02467
United States
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