Price Dynamics in a Market with Heterogeneous Investment Horizons and Boundedly Rational Traders

Alexander Subbotin () and Thierry Chauveau ()
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Alexander Subbotin: Centre d'Economie de la Sorbonne, https://centredeconomiesorbonne.cnrs.fr
Thierry Chauveau: Centre d'Economie de la Sorbonne, https://centredeconomiesorbonne.cnrs.fr

Documents de travail du Centre d'Economie de la Sorbonne from Université Panthéon-Sorbonne (Paris 1), Centre d'Economie de la Sorbonne

Abstract: This paper studies the effects of multiple investment horizons and investors' bounded rationality on the price dynamics. We consider a pure exchange economy with one risky asset, populated with agents maximizing CRRA-type expected utility of wealth over discrete investment periods. An investor's demand for the risky asset may depend on the historical returns, so that our model encompasses a wide range of behaviorist patterns. The necessary conditions, under which the risky return can be a stationary iid process, are established. The compatibility of these conditions with different types of demand functions in the heterogeneous agents' framework are explored. We find that conditional volatility of returns cannot be constant in many generic situations, especially if agents with different investment horizons operate on the market. In the latter case the return process can display conditional heteroscedasticity, even if all investors are so-called "fundamentalists" and their demand for the risky asset is subject to exogenous iid shocks. We show that the heterogeneity of investment horizons can be a possible explanation of different stylized patterns in stock returns, in particular, mean-reversion and volatility clustering

Keywords: Asset pricing; heterogeneous agents; multiple investment scales; volatility clustering (search for similar items in EconPapers)
JEL-codes: G10 G14 (search for similar items in EconPapers)
Pages: 43 pages
Date: 2010-04
New Economics Papers: this item is included in nep-cba and nep-dge
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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Persistent link: https://EconPapers.repec.org/RePEc:mse:cesdoc:10048

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