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Insider Trading, News Releases and Ownership Concentration

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  • Fidrmucova, J.
  • Goergen, M.
  • Renneboog, L.D.R.

    (Tilburg University, Tilburg Law and Economics Center)

Abstract

This paper investigates the market's reaction to UK insider transactions and analyzes whether the reaction depends on the firm's ownership.There are three major findings.First, differences in regulation between the UK and US, in particular the speedier reporting of trades in the UK, may explain the observed larger abnormal returns in the UK.Second, ownership by directors and outside shareholders has an impact on the abnormal returns.Third, it is important to adjust for news released before directors' trades.In particular, trades preceded by news on mergers & acquisitions and CEO replacements contain significantly less information.

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Bibliographic Info

Paper provided by Tilburg University, Tilburg Law and Economic Center in its series Discussion Paper with number 2005-025.

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Date of creation: 2005
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Handle: RePEc:dgr:kubtil:2005025

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