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Herd behavior and aggregate fluctuations in financial markets Author info | Abstract | Publisher info | Download info | Related research | Statistics Rama Cont (Science & Finance, Capital Fund Management)
Jean-Philippe Bouchaud (Science & Finance, Capital Fund Management, CEA Saclay;)
We present a simple model of a stock market where a random communication structure between agents gives rise to a heavy tails in the distribution of stock price variations in the form of an exponentially truncated power-law, similar to distributions observed in recent empirical studies of high frequency market data. Our model provides a link between two well-known market phenomena: the heavy tails observed in the distribution of stock market returns on one hand and 'herding' behavior in financial markets on the other hand. In particular, our study suggests a relation between the excess kurtosis observed in asset returns, the market order flow and the tendency of market participants to imitate each other.
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Paper provided by Science & Finance, Capital Fund Management in its series Science & Finance (CFM) working paper archive with number
500028.
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Date of creation: Dec 1997Date of revision:
Publication status: Published in Journal of Macroeconomic Dynamics, 4 (2), 170 (2000)Handle: RePEc:sfi:sfiwpa:500028Contact details of provider: Postal: 6 boulevard Haussmann, 75009 Paris, FRANCE Phone: +33.1.4949.5949 Fax: +33.1.4770.1740 Email: Web page: http://www.science-finance.fr/ More information through EDIRC
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Find related papers by JEL classification: G10 - Financial Economics - - General Financial Markets - - - General (includes Measurement and Data)
This paper has been announced in the following NEP Reports :
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