Sanjeev Bhojraj Robert J. Bloomfield William B. Tayler
Abstract
We provide experimental evidence that relaxing margin restrictions to allow more short selling can exacerbate overpricing, even though it reduces equilibrium price levels. This is because smart-money traders initially profit more by front-running optimistic investor sentiment than by disciplining prices. When short selling is not possible, competitive pressures among arbitrageurs rapidly drive prices to the equilibrium. However, the risk of margin calls slows the convergence process, because arbitrageurs who sell short too early face substantial losses if they are unable to synchronize their trades with other arbitrageurs (as in Abreu and Brunnermeier. 2002. Journal of Financial Economics 66(2--3):341--60; 2003. Econometrica 71(1):173--204). The Author 2008. Published by Oxford University Press on behalf of The Society for Financial Studies. All rights reserved. For Permissions, please e-mail: journals.permissions@oxfordjournals.org., Oxford University Press.
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Article provided by Oxford University Press for Society for Financial Studies in its journal The Review of Financial Studies.
Volume (Year): 22 (2009) Issue (Month): 5 (May) Pages: 2059-2085 Download reference. The following formats are available: HTML
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