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Speculative bubbles and crashes in stock market: an interacting-agent model of speculative activity

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  • Taisei Kaizoji

Abstract

We present an interacting-agent model of speculative activity explaining bubbles and crashes in stock markets. We describe stock markets through an infinite-range Ising model to formulate the tendency of traders getting influenced by the investment attitude of other traders. Bubbles and crashes are understood and described qualitatively and quantitatively in terms of the classical phase transitions. The results of estimation the parameters of the model using the actual financial data (the bubble and the subsequent crash in the Japanese stock market in 1987-1992) show that the good quality of the fits, as well as the consistency of the values of the parameters.

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  • Taisei Kaizoji, 2000. "Speculative bubbles and crashes in stock market: an interacting-agent model of speculative activity," Papers cond-mat/0010263, arXiv.org.
    • Handle: RePEc:arx:papers:cond-mat/0010263
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