NATIONAL BUREAU OF ECONOMIC RESEARCH
NATIONAL BUREAU OF ECONOMIC RESEARCH

A Model of Momentum

Laura Xiaolei Liu, Lu Zhang

NBER Working Paper No. 16747
Issued in January 2011

---- Acknowledgements -----

For helpful comments, we thank Heitor Almeida, Ilona Babenko, Frederico Belo, John Campbell, Hui Chen, Jerome Detemple, Bob Dittmar, Hui Guo, Dirk Hackbarth, Kewei Hou, Jennifer Huang, Tim Johnson, Stavros Panageas, Neil Pearson, Marcel Rindisbacher, Mark Seasholes, Berk Sensoy, RenĀ“e Stulz,

Jules van Binsbergen, Mike Weisbach, Ingrid Werner, Peter Wong, Chen Xue, Motohiro Yogo, Frank Yu, and other seminar participants at Boston University, Cheung Kong Graduate School of Business, The China Europe International Business School, The 2010 HKUST Finance Symposium on Asset Pricing/Investment,

The Ohio State University, The Third Shanghai Winter Finance Conference, The Minnesota Macro-Asset Pricing Conference in 2011, University of Cincinnati, and University of Illinois at Urbana-Champaign. The portfolio data, the SAS programs for constructing the portfolio data, and the Matlab programs for

GMM estimation and tests are available upon request. The paper supersedes our previous work titled "Investment-based momentum profits." All remaining errors are our own. The views expressed herein are those of the authors and do not necessarily reflect the views of the National Bureau of Economic Research.

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