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Change of ownership networks in Japan

In: Practical Fruits of Econophysics

Author

Listed:
  • Wataru Souma

    (ATR Network Informatics Laboratories)

  • Yoshi Fujiwara

    (ATR Network Informatics Laboratories)

  • Hideaki Aoyama

    (Kyoto University)

Abstract

Summary As complex networks in economics, we consider Japanese shareholding networks as they existed in 1985, 1990, 1995, 2000, 2002, and 2003. In this study, we use as data lists of shareholders for companies listed on the stock market or on the over-the-counter market. The lengths of the shareholder lists vary with the companies, and we use lists for the top 20 shareholders. We represent these shareholding networks as a directed graph by drawing arrows from shareholders to stock corporations. Consequently, the distribution of incoming edges has an upper bound, while that of outgoing edges has no bound. This representation shows that for all years the distributions of outgoing degrees can be well explained by the power law function with an exponential tail. The exponent depends on the year and the country, while the power law shape is maintained universally. We show that the exponent strongly correlates with the long-term shareholding rate and the cross-shareholding rate.

Suggested Citation

  • Wataru Souma & Yoshi Fujiwara & Hideaki Aoyama, 2006. "Change of ownership networks in Japan," Springer Books, in: Hideki Takayasu (ed.), Practical Fruits of Econophysics, pages 307-311, Springer.
    • Handle: RePEc:spr:sprchp:978-4-431-28915-9_56
    DOI: 10.1007/4-431-28915-1_56
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    Citations

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    Cited by:

    1. Saito, Yukiko Umeno & Watanabe, Tsutomu & Iwamura, Mitsuru, 2007. "Do larger firms have more interfirm relationships?," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 383(1), pages 158-163.
    2. Ikeda, Yuichi & Aoyama, Hideaki & Iyetomi, Hiroshi & Fujiwara, Yoshi & Souma, Wataru & Kaizoji, Taisei, 2007. "Response of firm agent network to exogenous shock," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 382(1), pages 138-148.
    3. Elisa Letizia & Fabrizio Lillo, 2017. "Corporate payments networks and credit risk rating," Papers 1711.07677, arXiv.org, revised Sep 2018.
    4. Omar A Guerrero & Robert L Axtell, 2013. "Employment Growth through Labor Flow Networks," PLOS ONE, Public Library of Science, vol. 8(5), pages 1-12, May.
    5. Li, Jie & Ren, Da & Feng, Xu & Zhang, Yongjie, 2016. "Network of listed companies based on common shareholders and the prediction of market volatility," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 462(C), pages 508-521.

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