Scaling Law for the Distribution of Fluctuations of Share Volume

Taisei Kaizoji () and Masahide Nuki

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Abstract: We show power-scaling behaviors for fluctuations in share volume, which no other studies have so far done. After analyzing a database of the daily transactions for all securities listed on the Tokyo Stock Exchange, we selected 1050 large companies that each had an unbroken series of daily trading activity from January 1975 to January 2002. We found that the cumulative distributions of daily fluctuations in share volumes can be well described by a power-law decay, and that the cumulative distributions for almost all of the companies can be characterized by an exponent within the stable Levy domain. Furthermore, more than 35 percent of the cumulative distributions can be well approximated by Zipf's law, that is, the cumulative distributions have an exponent close to unity.

Date: 2003-02, Revised 2006-03
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Published in Fractals 12 (1) (2004) 49-54

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