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Información Asimétrica Alrededor Del Anuncio De Una Opa

Author

Listed:
  • Ana María Ibáñez

    (Universitat de València)

  • Constantino José García

    (Universitat de València)

  • José Emilio Farinós

    (Universitat de València)

Abstract

This paper analyses the existence of insider trading before a takeover announcement through the changes in spread. Accordingly with the microstructure models that assume the existence of informational asymmetries among investors, the possibility of trading with insiders is a reason why market makers increase the spread. The verified effect that takeover announcements have on target firm returns is a strong motive to trade with private information. That is why it is more likely that a market maker detects insiders in this sort of events. Our results do not show significant changes in spread before takeover announcements, which are consistent with the insiders¿ absence. After the event, the significant decrease in spread implies informational asymmetry reductions. En este trabajo analizamos, a través de las variaciones en la horquilla, la existencia de agentes que negocian con información privilegiada previamente a la divulgación de una oferta pública de adquisición de acciones (OPA). Uno de los motivos por los que el creador de mercado incrementa la horquilla reside en la posibilidad de enfrentarse en sus transacciones con agentes mejor informados. El contrastado efecto que la publicación de una OPA tiene sobre el precio de los títulos de las empresas objetivo ofrece un importante motivo para negociar con información privada. Por ello, es más probable que el creador de mercado perciba el uso de este tipo de agentes en estas operaciones. Los resultados obtenidos no muestran, previamente a la divulgación del suceso, variaciones significativas en la horquilla consistentes con la presencia de agentes con información privada. Posteriormente al suceso, la disminución significativa de la horquilla manifiesta una reducción en las asimetrías informativas.

Suggested Citation

  • Ana María Ibáñez & Constantino José García & José Emilio Farinós, 2000. "Información Asimétrica Alrededor Del Anuncio De Una Opa," Working Papers. Serie EC 2000-16, Instituto Valenciano de Investigaciones Económicas, S.A. (Ivie).
  • Handle: RePEc:ivi:wpasec:2000-16
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    File URL: http://www.ivie.es/downloads/docs/wpasec/wpasec-2000-16.pdf
    File Function: Fisrt version / Primera version, 2000
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    Cited by:

    1. Mónica Melle, 2005. "¿Cómo valora el mercado de valores español la adopción de planes de opciones sobre acciones para directivos y consejeros?," Investigaciones Economicas, Fundación SEPI, vol. 29(1), pages 73-115, January.

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