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Stock Exchange Mergers and Market

Author

Listed:
  • Amélie Charles

    (Audencia Business School)

  • Olivier Darné

    (LEMNA - Laboratoire d'économie et de management de Nantes Atlantique - IEMN-IAE Nantes - Institut d'Économie et de Management de Nantes - Institut d'Administration des Entreprises - Nantes - UN - Université de Nantes)

  • Jae H. Kim

    (School of Economics and Finance - School of Economics and Finance)

  • Etienne Redor

    (Audencia Business School)

Abstract

The aim of this article is to examine the impact of stock exchange mergers on the degree of informational efficiency. For this purpose, we apply the generalized spectral shape test for the martingale difference hypothesis to the stock returns before and after the 31 domestic and crossborder mergers completed from 1997 to 2011. The test is conducted with moving subsample windows, allowing us to detect the periods of (in)efficiency, and thus to conduct a comparative analysis for pre-merger and post-merger periods. We find that higher levels of efficiency are less frequent than lower levels of efficiency after a stock exchange merger. We also find that the impact on the level of efficiency depends on a range of merger characteristics such as the level of development, size, geographical diversification and industrial diversification of stock exchange

Suggested Citation

  • Amélie Charles & Olivier Darné & Jae H. Kim & Etienne Redor, 2016. "Stock Exchange Mergers and Market," Post-Print hal-01238707, HAL.
    • Handle: RePEc:hal:journl:hal-01238707
    DOI: 10.1080/00036846.2015.1083090
    Note: View the original document on HAL open archive server: https://audencia.hal.science/hal-01238707
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    References listed on IDEAS

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    Cited by:

    1. Li, Shaofang & Marinč, Matej, 2018. "Economies of scale and scope in financial market infrastructures," Journal of International Financial Markets, Institutions and Money, Elsevier, vol. 53(C), pages 17-49.

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    Keywords

    Stock exchange mergers; market efficiency; martingale difference sequence;
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