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Rational trader risk

Péter Kondor

LSE Research Online Documents on Economics from London School of Economics and Political Science, LSE Library

Abstract: Allowing for a richer information structure than usual, we show that rational traders’ calculation with short-term price fluctuations may heavily influence their behaviour even if the interim price is not influenced by non-rational agents i.e. there is no noise trader risk. Instead, traders expect that new rational entrants with different information in the interim period will drive the price against them. Consequently, rational traders in the first period will hesitate to trade on their private information or - in the extreme - will trade against their private information i.e. buy more of the risky asset when they consider it worse. In the first part we develop a microstructure model with learning where the above effect will result in severe inefficiency and mispricing. In the second part, we discuss the critical properties of the information structure which are expected to result in similar findings in general models.

Keywords: rare events; rare eisasters; equity premium puzzle; generalized empirical Likelihood; semi-parametric Bayesian Inference; calibration; cross-section of asset (search for similar items in EconPapers)
JEL-codes: D4 D8 G11 G12 (search for similar items in EconPapers)
Pages: 33 pages
Date: 2004-05
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (5)

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http://eprints.lse.ac.uk/24646/ Open access version. (application/pdf)

Related works:
Working Paper: Rational Trader Risk (2005) Downloads
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