Intra-day market activity
Gouriéroux, Christian; Jasiak, Joanna; Le Fol, Gaëlle (1999), Intra-day market activity, Journal of Financial Markets, 2, 3, p. 193-226. http://dx.doi.org/10.1016/S1386-4181(99)00004-X
TypeArticle accepté pour publication ou publié
Journal nameJournal of Financial Markets
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Abstract (EN)This paper presents a study of intra-day patterns of stock market activity and introduces duration based activity measures for single stocks and multiple assets. The proposed measures involve weighted durations, i.e. times necessary to sell (buy) a predetermined volume or value of stocks. As such, they capture dependencies between intra-trade durations, transaction volumes and prices, and can be interpreted as liquidity measures. This approach allows us to highlight the intra-day variations of liquidity, its costs and volatility, and to develop a liquidity based asset ordering. The extension to a multivariate analysis yields new insights into the dynamics of portfolio liquidity by revealing various aspects of asset substitution, including the effects of correlated trade intensities of portfolio components. Several examples are used to show that in practice, the proposed liquidity measures become efficient instruments for strategic block trading and optimal portfolio adjustments. The paper also contains an empirical study of asset activity on the Paris Bourse. We examine the liquidity dynamics throughout the day and reveal the existence of periodic patterns resulting from world-wide interactions of major stock markets. In the multivariate setup, we report evidence on common patterns and correlations of trade intensities of selected stocks.
Subjects / KeywordsLiquidity; High frequency data; Duration models; Activity and co-activity measures; Stocks; Stock Market
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