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Herding and price convergence in a laboratory financial market

Cipriani, M.; Guarino, A.; (2002) Herding and price convergence in a laboratory financial market. (ELSE Working Papers 71). ESRC Centre for Economic Learning and Social Evolution: London, UK. Green open access

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We study whether herding can arise in a laboratory financial market in which agents trade sequentially. Agents trade an asset whose value is unknown and whose price is efficiently set by a market maker. We show that the presence of a price mechanism destroys the possibility of herding. Most agents follow their private information and prices converge to the fundamental value. This result contrasts with the case of a fixed price, where herding and cascades arise. When the price moves, however, agents may behave as contrarian, i.e., they may trade against the market, something not accounted for by the theory. Finally, we study whether informational cascades arise when trade is costly (e.g, because of a Tobin tax). With trade costs, most subjects rationally decided not to trade and the price was unable to aggregate private information efficiently.

Type: Working / discussion paper
Title: Herding and price convergence in a laboratory financial market
Open access status: An open access version is available from UCL Discovery
Publisher version: http://else.econ.ucl.ac.uk/newweb/papers.php#2002
Language: English
Keywords: JEL classification: C92, D8, G14
UCL classification: UCL > Provost and Vice Provost Offices > UCL SLASH > Faculty of S&HS > Dept of Economics
URI: https://discovery.ucl.ac.uk/id/eprint/14637
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