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Dynamics of price and trading volume in a spin model of stock markets with heterogeneous agents

Author

Listed:
  • Taisei Kaizoji

    (ICU Tokyo)

  • Stefan Bornholdt

    (U Kiel)

  • Yoshi Fujiwara

    (KRC Kyoto)

Abstract

The dynamics of a stock market with heterogeneous agents is discussed in the framework of a recently proposed spin model for the emergence of bubbles and crashes. We relate the log returns of stock prices to magnetization in the model and find that it is closely related to trading volume as observed in real markets. The cumulative distribution of log returns exhibits scaling with exponents steeper than 2 and scaling is observed in the distribution of transition times between bull and bear markets.

Suggested Citation

  • Taisei Kaizoji & Stefan Bornholdt & Yoshi Fujiwara, 2002. "Dynamics of price and trading volume in a spin model of stock markets with heterogeneous agents," Papers cond-mat/0207253, arXiv.org.
    • Handle: RePEc:arx:papers:cond-mat/0207253
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