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Stock exchange mergers and weak form of market efficiency: The case of Euronext Lisbon

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  • Khan, Walayet
  • Vieito, João Paulo
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    Abstract

    This exploratory paper is among the first to examine the impact of stock exchange mergers on informational market efficiency. We focus on the merger of Bolsa de Valores de Lisboa e Porto (Portuguese Stock Exchange) with Euronext in 2002 (that created Euronext Lisbon). To investigate this question we perform numerous statistical tests: serial correlation test (ACF test), runs test, unit root test (Kwiatkowski, Philips, Schmidt, & Shin, 1992), multiple variance ratio test (Chow & Denning, 1993) and ranks and signs test (Wright, 2000).

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    File URL: http://www.sciencedirect.com/science/article/pii/S1059056011001110
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    Bibliographic Info

    Article provided by Elsevier in its journal International Review of Economics & Finance.

    Volume (Year): 22 (2012)
    Issue (Month): 1 ()
    Pages: 173-189

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    Handle: RePEc:eee:reveco:v:22:y:2012:i:1:p:173-189

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    Web page: http://www.elsevier.com/locate/inca/620165

    Related research

    Keywords: Stock exchange mergers; Random walk hypothesis; Market efficiency;

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    References

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    1. Wright, Jonathan H, 2000. "Alternative Variance-Ratio Tests Using Ranks and Signs," Journal of Business & Economic Statistics, American Statistical Association, vol. 18(1), pages 1-9, January.
    2. Ojah, Kalu & Karemera, David, 1999. "Random Walks and Market Efficiency Tests of Latin American Emerging Equity Markets: A Revisit," The Financial Review, Eastern Finance Association, vol. 34(2), pages 57-72, May.
    3. Andrew W. Lo & A. Craig MacKinlay, 1989. "Stock Market Prices Do Not Follow Random Walks: Evidence From a Simple Specification Test," NBER Working Papers 2168, National Bureau of Economic Research, Inc.
    4. repec:ebl:ecbull:v:7:y:2007:i:3:p:1-8 is not listed on IDEAS
    5. Ainul Islam & Mohammed Khaled, 2005. "Tests of Weak-Form Efficiency of the Dhaka Stock Exchange," Journal of Business Finance & Accounting, Wiley Blackwell, vol. 32(7-8), pages 1613-1624.
    6. Buguk, Cumhur & Wade Brorsen, B., 2003. "Testing weak-form market efficiency: Evidence from the Istanbul Stock Exchange," International Review of Financial Analysis, Elsevier, vol. 12(5), pages 579-590.
    7. Nielsson, Ulf, 2009. "Stock exchange merger and liquidity: The case of Euronext," Journal of Financial Markets, Elsevier, vol. 12(2), pages 229-267, May.
    8. Hoque, Hafiz A.A.B. & Kim, Jae H. & Pyun, Chong Soo, 2007. "A comparison of variance ratio tests of random walk: A case of Asian emerging stock markets," International Review of Economics & Finance, Elsevier, vol. 16(4), pages 488-502.
    9. Dicle, Mehmet F. & Beyhan, Aydin & Yao, Lee J., 2010. "Market efficiency and international diversification: Evidence from India," International Review of Economics & Finance, Elsevier, vol. 19(2), pages 313-339, April.
    10. Kim, Jae H. & Shamsuddin, Abul, 2008. "Are Asian stock markets efficient? Evidence from new multiple variance ratio tests," Journal of Empirical Finance, Elsevier, vol. 15(3), pages 518-532, June.
    11. Dat Bue Lock, 2007. "The Taiwan stock market does follow a random walk," Economics Bulletin, AccessEcon, vol. 7(3), pages 1-8.
    12. MacDonald, R. & Power, D., 1993. "Stock prices, efficiency and cointegration: The case of the UK," International Review of Economics & Finance, Elsevier, vol. 2(3), pages 251-265.
    13. Alexandros Milionis & Demetrios Moschos, 2000. "On the validity of the weak-form efficient markets hypothesis applied to the London stock exchange: comment," Applied Economics Letters, Taylor & Francis Journals, vol. 7(7), pages 419-421.
    14. Chow, K. Victor & Denning, Karen C., 1993. "A simple multiple variance ratio test," Journal of Econometrics, Elsevier, vol. 58(3), pages 385-401, August.
    15. Appiah-Kusi, Joe & Menyah, Kojo, 2003. "Return predictability in African stock markets," Review of Financial Economics, Elsevier, vol. 12(3), pages 247-270.
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    Cited by:
    1. Amélie Charles & Olivier Darné & Jae H. Kim & Etienne Redor, 2014. "Stock Exchange Mergers and Market Efficiency," Working Papers hal-00940105, HAL.
    2. Hellström, Jörgen & Liu, Yuna & Sjögren, Tomas, 2013. "Stock exchange mergers and return co-movement: A flexible dynamic component correlations model," Economics Letters, Elsevier, vol. 121(3), pages 511-515.

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