Individual investors and volatility Foucault, Thierry; Sraer, David; Thesmar, David J

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Authors
Foucault, Thierry ; Sraer, David ; Thesmar, David J
Appears In
Journal of Finance
Subjects
Stockholders - France.; Securities trading; Stock markets
Audience
Academic
Summary
To authenticate to the full-text of this article, please visit this link: http://dx.doi.org/10.1111/j.1540-6261.2011.01668.x Byline: THIERRY FOUCAULT, DAVID SRAER, DAVID J. THESMAR (*) Abstract: ABSTRACT We show that retail trading activity has a positive effect on the volatility of stock returns, which suggests that retail investors behave as noise traders. To identify this effect, we use a reform of the French stock market that raises the relative cost of speculative trading for retail investors. The daily return volatility of the stocks affected by the reform falls by 20 basis points (a quarter of the sample standard deviation of the return volatility) relative to other stocks. For affected stocks, we also find a significant decrease in the magnitude of return reversals and the price impact of trades. Article note: (*) Foucault and Thesmar are from HEC, Paris. David Sraer is from Princeton University. We are particularly grateful to Ulrike Malmendier, Mark Seasholes, an anonymous referee, and Campbell Harvey (the Editor) for their suggestions. We also appreciate the comments of Christophe Bisiere, Hans Degryse, Paul Ehling, Andras Fulop, Terrence Hendershott, Ravi Jagganathan, Eugene Kandel, Laurence Lescourret, Steven Ongena, Evren Ors, Christophe Perignon, Richard Priestley, Dimitri Vayanos, Jialin Yu, Jiang Wang, and seminar participants at the 2009 American Finance Association (AFA) Meetings in San Francisco, the AFFI conference in Paris, BI Norwegian School of Management, Booth School of Business, ESSEC, Tilburg University, and Toulouse University. We thank EUROFIDAI for providing some of the data used in this paper, and officials of the Paris Bourse for their guidance regarding the structure of the French stock market. We also thank Jerome Dugast and Marcus Fearnley for excellent research assistance. Thierry Foucault and David Thesmar gratefully acknowledge the support of the HEC Foundation. Thierry Foucault also thanks Paris Europlace for its support. The usual disclaimer applies.
Bookmark
http://trove.nla.gov.au/work/21459
Work ID
21459

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