Stock market return distributions: From past to present

S. Drożdż, M. Forczek, J. Kwapień, Oświe¸cimka, P. and R. Rak

Physica A: Statistical Mechanics and its Applications, 2007, vol. 383, issue 1, 59-64

Abstract: We show that recent stock market fluctuations are characterized by the cumulative distributions whose tails on short, minute time scales exhibit power scaling with the scaling index α>3 and this index tends to increase quickly with decreasing sampling frequency. Our study is based on high-frequency recordings of the S&P500, DAX and WIG20 indices over the interval May 2004–May 2006. Our findings suggest that dynamics of the contemporary market may differ from the one observed in the past. This effect indicates a constantly increasing efficiency of world markets.

Keywords: Financial markets; Inverse cubic power law; q-Gaussian distributions; Multifractality (search for similar items in EconPapers)
Date: 2007
References: View complete reference list from CitEc
Citations: View citations in EconPapers (25)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:383:y:2007:i:1:p:59-64

DOI: 10.1016/j.physa.2007.04.130

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