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Trading Intensity and Intraday Volatility on the Prague Stock Exchange: Evidence from an Autoregressive Conditional Duration Model

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Abstract

Using high-frequency trade and quote data from the Prague Stock Exchange, this paper investigates the empirical behavior of price durations defined as the time needed for a quote midpoint to move by a given amount. Focusing on the three most liquid securites traded on the exchange - Cesky Telecom, CEZ and Komercni Banka - we estimate the autoregressive conditional duration (ACD) models for price duration series and test several market microstructure hypotheses suggested by the infomation-based models of market microstructure. Similarly to earlier studies, we find that price durations exhibit diurnal patterns, overdispersion and substantial persistence which can be adequately captured by the ACD model. The market microstructure hypotheses, however, do not find sound empirical support in our results.

Suggested Citation

  • Vít Bubák & Filip Žikeš, 2005. "Trading Intensity and Intraday Volatility on the Prague Stock Exchange: Evidence from an Autoregressive Conditional Duration Model," Working Papers IES 80, Charles University Prague, Faculty of Social Sciences, Institute of Economic Studies, revised 2005.
    • Handle: RePEc:fau:wpaper:wp080
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    More about this item

    Keywords

    autoregressive conditional duration; instantaneous volatility; market microstructure;
    All these keywords.

    JEL classification:

    • G14 - Financial Economics - - General Financial Markets - - - Information and Market Efficiency; Event Studies; Insider Trading
    • G18 - Financial Economics - - General Financial Markets - - - Government Policy and Regulation

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