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Changes in the Information Efficiency of Stock Prices: Additional Evidence


  • Richard A. DeFusco
  • Suchi Mishra
  • K. Raghunandan


Previous research shows, using data from three quarters after the implementation of regulation fair disclosure (Reg FD), that there is an improvement in the informational efficiency of stock prices after Reg FD. We compare the informational efficiency of stock prices in four pre-Reg FD quarters (1999-2000) and 12 post-Reg FD quarters (2002-2005). The improvement in the informational efficiency of stock prices previously reported in the immediate aftermath of Reg FD persists in later periods. Copyright (c) 2010, The Eastern Finance Association.

Suggested Citation

  • Richard A. DeFusco & Suchi Mishra & K. Raghunandan, 2010. "Changes in the Information Efficiency of Stock Prices: Additional Evidence," The Financial Review, Eastern Finance Association, vol. 45(1), pages 153-165, February.
  • Handle: RePEc:bla:finrev:v:45:y:2010:i:1:p:153-165

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    Cited by:

    1. Grégoire, Philippe & Huang, Hui, 2012. "Information disclosure with leakages," Economic Modelling, Elsevier, vol. 29(5), pages 2005-2010.

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