Booms, busts and behavioural heterogeneity in stock prices

Cars Hommes and D. in 't Veld ()
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D. in 't Veld: University of Amsterdam

No 14-14, CeNDEF Working Papers from Universiteit van Amsterdam, Center for Nonlinear Dynamics in Economics and Finance

Abstract: We estimate a behavioural heterogeneous agents model with boundedly rational traders who know the fundamental stock price, but disagree about the persistence of deviations from the fundamental. Some agents (fundamentalists) believe in mean-reversion of stock prices, while others (chartists) expect a continuation of the trend. Agents gradually switch between the two rules, based upon their relative performance, leading to self-reinforcing regimes of mean-reversion and trend-following. For the fundamental benchmark price we use two well-known models, the Gordon model with a constant risk premium and the Campbell-Cochrane consumption-habit model with a time-varying risk premium. We estimate a two-type switching model using U.S. stock prices until 2012Q4. The estimations show an improvement over representative agent models that is both statistically and economically significant. Our model suggests that behavioural regime switching strongly amplifies booms and busts, in particular, the dot-com bubble and the nancial crisis in 2008.

Date: 2014
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Citations: View citations in EconPapers (2)

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Related works:
Journal Article: Booms, busts and behavioural heterogeneity in stock prices (2017)
Working Paper: Booms, Busts and Behavioural Heterogeneity in Stock Prices (2015)
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Persistent link: https://EconPapers.repec.org/RePEc:ams:ndfwpp:14-14

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