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Policy impacts on Vietnam stock markets: a case of anomalies and disequilibria 2000-2006

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  • André Farber
  • Van Nam Nguyen
  • Quan-Hoang Vuong

Abstract

Vietnam launched its first-ever stock market, named as Ho Chi Minh City Securities Trading Center (HSTC) on July 20, 2000. This is one of pioneering works on HSTC, which finds empirical evidences for the following: Anomalies of the HSTC stock returns through clusters of limit-hits, limit-hit sequences; Strong herd effect toward extreme positive returns of the market portfolio;The specification of ARMA-GARCH helps capture fairly well issues such as serial correlations and fat-tailed for the stabilized period. By using further information and policy dummy variables, it is justifiable that policy decisions on technicalities of trading can have influential impacts on the move of risk level, through conditional variance behaviors of HSTC stock returns. Policies on trading and disclosure practices have had profound impacts on Vietnam Stock Market (VSM). The over-using of policy tools can harm the market and investing mentality. Price limits become increasingly irrelevant and prevent the market from self-adjusting to equilibrium. These results on VSM have not been reported before in the literature on Vietnam’s financial markets. Given the policy implications, we suggest that the Vietnamese authorities re-think the use of price limit and give more freedom to market participants.

Suggested Citation

  • André Farber & Van Nam Nguyen & Quan-Hoang Vuong, 2006. "Policy impacts on Vietnam stock markets: a case of anomalies and disequilibria 2000-2006," Working Papers CEB 06-005.RS, ULB -- Universite Libre de Bruxelles.
  • Handle: RePEc:sol:wpaper:06-005
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    References listed on IDEAS

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    1. Malliaropulos, Dimitrios & Priestley, Richard, 1999. "Mean reversion in Southeast Asian stock markets," Journal of Empirical Finance, Elsevier, vol. 6(4), pages 355-384, October.
    2. Chang, Eric C. & Cheng, Joseph W. & Khorana, Ajay, 2000. "An examination of herd behavior in equity markets: An international perspective," Journal of Banking & Finance, Elsevier, vol. 24(10), pages 1651-1679, October.
    3. Huang, Yen-Sheng & Fu, Tze-Wei & Ke, Mei-Chu, 2001. "Daily price limits and stock price behavior: evidence from the Taiwan stock exchange," International Review of Economics & Finance, Elsevier, vol. 10(3), pages 263-288, July.
    4. Pyun, Chong Soo & Lee, Sa Young & Nam, Kiseok, 2000. "Volatility and information flows in emerging equity market: A case of the Korean Stock Exchange," International Review of Financial Analysis, Elsevier, vol. 9(4), pages 405-420.
    5. Berkman, Henk & Lee, John Byong Tek, 2002. "The effectiveness of price limits in an emerging market: Evidence from the Korean Stock Exchange," Pacific-Basin Finance Journal, Elsevier, vol. 10(5), pages 517-530, November.
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    Cited by:

    1. Manh Ha Nguyen & Olivier Darné, 2018. "Forecasting and risk management in the Vietnam Stock Exchange," Working Papers halshs-01679456, HAL.
    2. Quan-Hoang Vuong & Nancy K. Napier & Donaldine E. Samson & Hong Kong Nguyen, 2013. "Empirical Evidence on Relationships between Ex Ante Innovation Pursuit and Post-M&A Performance in the Vietnamese M&A Industry, 2005-2012," Working Papers CEB 13-009, ULB -- Universite Libre de Bruxelles.
    3. Kuan-Min Wang & Hung-Cheng Lai, 2013. "Which Global Stock Indices Trigger Stronger Contagion Risk in the Vietnamese Stock Market? Evidence Using a Bivariate Analysis," Panoeconomicus, Savez ekonomista Vojvodine, Novi Sad, Serbia, vol. 60(4), pages 473-497, June.
    4. Quan-Hoang Vuong & Tran Tri Dung & Thi Chau Ha NguyenN, 2009. "Mergers and Acquisitions in Vietnam’s Emerging Market Economy, 1990-2009," Working Papers CEB 09-045.RS, ULB -- Universite Libre de Bruxelles.

    More about this item

    Keywords

    GARCH; Vietnam; Emerging stock market; Policy Impacts.;

    JEL classification:

    • C12 - Mathematical and Quantitative Methods - - Econometric and Statistical Methods and Methodology: General - - - Hypothesis Testing: General
    • C22 - Mathematical and Quantitative Methods - - Single Equation Models; Single Variables - - - Time-Series Models; Dynamic Quantile Regressions; Dynamic Treatment Effect Models; Diffusion Processes

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