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Korean stock prices under price limits: variance ratio tests of random walks

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  • Hyun-Jung Ryoo
  • Graham Smith

Abstract

This paper provides tests of the random walk hypothesis for the Korean stock market over the period from March 1988 to December 1998. During this time there are five regimes of daily price limits. We use a sample of 55 actively traded stocks selected to cover a wide range of industries and with a marked number of limit moves and test the random walk hypothesis under each price limit regime. The system of price limits prevents equity prices from following a random walk process and so results in the market being inefficient. As the daily price limits are increased, the proportion of stock prices following a random walk increases. That is, the stock market as a whole approaches a random walk as price limits are relaxed.

Suggested Citation

  • Hyun-Jung Ryoo & Graham Smith, 2002. "Korean stock prices under price limits: variance ratio tests of random walks," Applied Financial Economics, Taylor & Francis Journals, vol. 12(8), pages 545-553.
  • Handle: RePEc:taf:apfiec:v:12:y:2002:i:8:p:545-553
    DOI: 10.1080/09603100010015789
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    References listed on IDEAS

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    1. Corsetti, Giancarlo & Pesenti, Paolo & Roubini, Nouriel, 1999. "What caused the Asian currency and financial crisis?," Japan and the World Economy, Elsevier, vol. 11(3), pages 305-373, October.
    2. Giancarlo Corsetti & Paolo Pesenti & Nouriel Roubini, 1998. "What Caused the Asian Currency and Financial Crisis? Part I: A Macroeconomic Overview," NBER Working Papers 6833, National Bureau of Economic Research, Inc.
    3. Giancarlo Corsetti & Paolo Pesenti & Nouriel Roubini, 1998. "What Caused the Asian Currency and Financial Crisis? Part II: The Policy Debate," NBER Working Papers 6834, National Bureau of Economic Research, Inc.
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    Cited by:

    1. Clapham, Benjamin & Gomber, Peter & Haferkorn, Martin & Panz, Sven, 2017. "Managing excess volatility: Design and effectiveness of circuit breakers," SAFE Working Paper Series 195, Research Center SAFE - Sustainable Architecture for Finance in Europe, Goethe University Frankfurt.
    2. Pawan Jain & Wen-Jun Xue, 2017. "Global Investigation of Return Autocorrelation and its Determinants," Working Papers 1704, Florida International University, Department of Economics.
    3. repec:eee:pacfin:v:43:y:2017:i:c:p:200-217 is not listed on IDEAS
    4. Jae H. Kim, 2004. "Testing for the martingale hypothesis in Asian stock prices: evidence from a new joint variance ratio test," Econometric Society 2004 Australasian Meetings 98, Econometric Society.
    5. Felix Schindler, 2013. "Predictability and Persistence of the Price Movements of the S&P/Case-Shiller House Price Indices," The Journal of Real Estate Finance and Economics, Springer, vol. 46(1), pages 44-90, January.
    6. Farag, Hisham, 2013. "Price limit bands, asymmetric volatility and stock market anomalies: Evidence from emerging markets," Global Finance Journal, Elsevier, vol. 24(1), pages 85-97.
    7. 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.
    8. Kian-Ping Lim & Venus Khim-Sen Liew & Hock-Tsen Wong, 2003. "Weak-form Efficient Market Hypothesis, Behavioural Finance and Episodic Transient Dependencies: The Case of the Kuala Lumpur Stock Exchange," Finance 0312012, University Library of Munich, Germany.
    9. 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.
    10. Carl B.McGowan, Jr. & Susan E. Moeller, 2009. "A Model for Making Foreign Direct Investment Decisions Using Real Variables for Political and Economic Risk Analysis," Managing Global Transitions, University of Primorska, Faculty of Management Koper, vol. 7(1), pages 27-44.
    11. repec:scm:ecofrm:v:5:y:2016:i:1:p:1 is not listed on IDEAS
    12. Comerton-Forde, Carole & Rydge, James, 2006. "The current state of Asia-Pacific stock exchanges: A critical review of market design," Pacific-Basin Finance Journal, Elsevier, vol. 14(1), pages 1-32, January.
    13. Hiremath, Gourishankar S & Bandi, Kamaiah, 2010. "Some Further Evidence on the Behaviour of Stock Returns in India," MPRA Paper 48518, University Library of Munich, Germany.
    14. Graham Smith, 2007. "Random walks in Middle Eastern stock markets," Applied Financial Economics, Taylor & Francis Journals, vol. 17(7), pages 587-596.
    15. Amira Akl Ahmed, 2014. "Evolving and relative efficiency of MENA stock markets: evidence from rolling joint variance ratio tests," Ensayos Revista de Economia, Universidad Autonoma de Nuevo Leon, Facultad de Economia, vol. 0(1), pages 91-126, May.
    16. Felix Schindler, 2014. "Persistence and Predictability in UK House Price Movements," The Journal of Real Estate Finance and Economics, Springer, vol. 48(1), pages 132-163, January.
    17. Hiremath, Gourishankar S & Bandi, Kamaiah, 2009. "On the random walk characteristics of stock returns in India," MPRA Paper 46499, University Library of Munich, Germany.
    18. Andrew C. Worthington & Helen Higgs, 2003. "Weak-form market efficiency in European emerging and developed stock markets," School of Economics and Finance Discussion Papers and Working Papers Series 159, School of Economics and Finance, Queensland University of Technology.
    19. repec:rss:jnljef:v1i2p1 is not listed on IDEAS
    20. Hellström, Jörgen & Liu, Yuna & Sjögren, Tomas, 2016. "Stock exchange mergers and weak-form information efficiency: Evidence from the OMX Nordic and Baltic consolidation," Umeå Economic Studies 923, Umeå University, Department of Economics.

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