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Stock market return distributions: From past to present

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

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.

Suggested Citation

  • Drożdż, S. & Forczek, M. & Kwapień, J. & Oświe¸cimka, P. & Rak, R., 2007. "Stock market return distributions: From past to present," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 383(1), pages 59-64.
    • Handle: RePEc:eee:phsmap:v:383:y:2007:i:1:p:59-64
    DOI: 10.1016/j.physa.2007.04.130
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