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Are Insider Trades Informative?

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Author Info
Lakonishok, Josef
Lee, Inmoo
Abstract

We examine insider trading activities of all companies traded on the NYSE, AMEX, and Nasdaq during the 1975-95 period. In general, very little market movement is observed when insiders trade and when they report their trades to the SEC. Insiders in aggregate are contrarian investors. However, they predict market movements better than simple contrarian strategies. Insiders also seem to be able to predict cross-sectional stock returns. The result, however, is driven by insider's ability to predict returns in smaller firms. In addition, informativeness of insiders' activities is coming from purchases, while insider selling appears to have no predictive ability. Article published by Oxford University Press on behalf of the Society for Financial Studies in its journal, The Review of Financial Studies.

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Publisher Info
Article provided by Oxford University Press for Society for Financial Studies in its journal Review of Financial Studies.

Volume (Year): 14 (2001)
Issue (Month): 1 ()
Pages: 79-111
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Handle: RePEc:oup:rfinst:v:14:y:2001:i:1:p:79-111

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  3. Olivier Brandouy & Pascal Barneto & Lawrence Leger, 2003. "Asymmetric information, imitative behaviour and communication: price formation in an experimental asset market," European Journal of Finance, Taylor and Francis Journals, vol. 9(5), pages 393-419, October. [Downloadable!] (restricted)
  4. Kyriacou, Kyriacos & Luintel, Kul B & Mase, Bryan, 2008. "Private Information in Executives' Option Trades: Evidence from the UK," Cardiff Economics Working Papers E2008/4, Cardiff University, Cardiff Business School, Economics Section. [Downloadable!]
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  6. Del Brio, Esther & Elías Tobar, José, 2005. "Rentabilidad a Corto Plazo de los Insiders en los Mercados Español y Británico," Documentos de Trabajo "Nuevas Tendencias en Dirección de Empresas". Working Papers "New Trends on Business Administration". 2005-10, Interuniversitary Doctorate Program "New Trends on Business Administration", Universities of Valladolid, Burgos and Salamanca (Spain). Programa de Doctorado Interuniversitario "Nuevas Tendencias en Di. [Downloadable!]
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