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Stock prices and the flow of information in the Athens Stock Exchange

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  • Kate Phylaktis
  • Manolis G Kavussanos
  • Gikas Manalis

Abstract

The paper investigates the dynamics of price changes and information flow to the market in the Athens Stock Exchange in Greece using daily data over the period 1988 to 1993. A generalised autoregressive conditional heteroskedastic (GARCH) model in stock returns is shown to reflect time dependence in the process generating information flow to the market. Using daily trading volume or value as proxies for information flow, we find them to be significant in explaining the variance of daily returns and to reduce GARCH effects substantially. This has implications for the informational efficiency of the market.

Suggested Citation

  • Kate Phylaktis & Manolis G Kavussanos & Gikas Manalis, 1996. "Stock prices and the flow of information in the Athens Stock Exchange," European Financial Management, European Financial Management Association, vol. 2(1), pages 113-126, March.
    • Handle: RePEc:bla:eufman:v:2:y:1996:i:1:p:113-126
    DOI: 10.1111/j.1468-036X.1996.tb00031.x
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    References listed on IDEAS

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    Cited by:

    1. Blasco, Natividad & Corredor, Pilar & Del Rio, Cristina & Santamaria, Rafael, 2005. "Bad news and Dow Jones make the Spanish stocks go round," European Journal of Operational Research, Elsevier, vol. 163(1), pages 253-275, May.
    2. Kate Phylaktis & Antonis Aristidou, 2013. "Margin Changes and Futures Trading Activity: a New Approach," European Financial Management, European Financial Management Association, vol. 19(1), pages 45-71, January.
    3. Saswat Patra & Malay Bhattacharyya, 2021. "Does volume really matter? A risk management perspective using cross‐country evidence," International Journal of Finance & Economics, John Wiley & Sons, Ltd., vol. 26(1), pages 118-135, January.
    4. Ali M. Kutan & Tansu Aksoy, 2004. "Public Information Arrival and Emerging Markets Returns and Volatility," Multinational Finance Journal, Multinational Finance Journal, vol. 8(3-4), pages 227-245, september.
    5. Fenghua, Wen & Xiaoguang, Yang, 2009. "Empirical study on relationship between persistence-free trading volume and stock return volatility," Global Finance Journal, Elsevier, vol. 20(2), pages 119-127.

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