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arxiv: 0711.3106 · v3 · submitted 2007-11-20 · 💱 q-fin.ST · physics.soc-ph

A threshold model of financial markets

classification 💱 q-fin.ST physics.soc-ph
keywords modelagentsmarketsactionsclusteringdefineddistributionevolution
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We proposed a model of interacting market agents based on the Ising spin model. The agents can take three actions: "buy," "sell," or "stay inactive." We defined a price evolution in terms of the system magnetization. The model reproduces main stylized facts of real markets such as: fat-tailed distribution of returns and volatility clustering.

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