On the role of arbitrageurs in rational markets
Price discrepancies, although at odds with mainstream finance, are persistent phenomena in financial markets. These apparent mispricings lead to the presence of ‘arbitrageurs’, who aim to exploit the resulting profit opportunities, but whose role remains controversial. This article investigates the impact of the presence of arbitrageurs in rational financial markets. Arbitrage opportunities between redundant risky assets arise endogenously in an economy populated by rational, heterogeneous investors facing restrictions on leverage and short sales. An arbitrageur, indulging in costless, riskless arbitrage is shown to alleviate the effects of these restrictions and improve the transfer of risk amongst investors. When the arbitrageur lacks market power, they always take on the largest arbitrage position possible. When the arbitrageur behaves noncompetitively, in that they take into account the price impact of their trades, they optimally limit the size of their positions due to decreasing marginal profits. In the case when the arbitrageur is subject to margin requirements and is endowed with capital from outside investors, the size of the arbitrageur’s trades and the capital needed to implement these trades are endogenously solved for in equilibrium.
(This abstract was borrowed from another version of this item.)
If you experience problems downloading a file, check if you have the proper application to view it first. In case of further problems read the IDEAS help page. Note that these files are not on the IDEAS site. Please be patient as the files may be large.
As the access to this document is restricted, you may want to look for a different version under "Related research" (further below) or search for a different version of it.
References listed on IDEAS
Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.:
- J. Michael Harrison & David M. Kreps, 1978. "Speculative Investor Behavior in a Stock Market with Heterogeneous Expectations," The Quarterly Journal of Economics, Oxford University Press, vol. 92(2), pages 323-336.
- Duffie, Darrell & Garleanu, Nicolae & Pedersen, Lasse Heje, 2002. "Securities lending, shorting, and pricing," Journal of Financial Economics, Elsevier, vol. 66(2-3), pages 307-339.
- Domenico Cuoco & Hong Liu, 2000. "A Martingale Characterization of Consumption Choices and Hedging Costs with Margin Requirements," Mathematical Finance, Wiley Blackwell, vol. 10(3), pages 355-385.
- Cox, John C & Ingersoll, Jonathan E, Jr & Ross, Stephen A, 1985. "An Intertemporal General Equilibrium Model of Asset Prices," Econometrica, Econometric Society, vol. 53(2), pages 363-84, March.
- De Long, J Bradford & Andrei Shleifer & Lawrence H. Summers & Robert J. Waldmann, 1990.
"Noise Trader Risk in Financial Markets,"
Journal of Political Economy,
University of Chicago Press, vol. 98(4), pages 703-38, August.
- J. Bradford De Long & Andrei Shleifer & Lawrence H. Summers & Robert J. Waldmann, . "Noise Trader Risk in Financial Markets," J. Bradford De Long's Working Papers _124, University of California at Berkeley, Economics Department.
- De Long, J. Bradford & Shleifer, Andrei & Summers, Lawrence H. & Waldmann, Robert J., 1990. "Noise Trader Risk in Financial Markets," Scholarly Articles 3725552, Harvard University Department of Economics.
- Owen A. Lamont & Richard H. Thaler, 2003.
"Can the Market Add and Subtract? Mispricing in Tech Stock Carve-outs,"
Journal of Political Economy,
University of Chicago Press, vol. 111(2), pages 227-268, April.
- Owen A. Lamont & Richard H. Thaler, 2001. "Can the Market Add and Subtract? Mispricing in Tech Stock Carve-Outs," NBER Working Papers 8302, National Bureau of Economic Research, Inc.
- Owen A. Lamont & Richard H. Thaler, . "Can the Market Add and Subtract? Mispricing in Tech Stock Carve-outs," CRSP working papers 528, Center for Research in Security Prices, Graduate School of Business, University of Chicago.
- Albert S. Kyle, 2001. "Contagion as a Wealth Effect," Journal of Finance, American Finance Association, vol. 56(4), pages 1401-1440, 08.
- Basak, Suleyman & Croitoru, Benjamin, 2000.
"Equilibrium Mispricing in a Capital Market with Portfolio Constraints,"
Review of Financial Studies,
Society for Financial Studies, vol. 13(3), pages 715-48.
- Suleyman Basak & Benjamin Croitoru, . "Equilibrium Mispricing in a Capital Market with Portfolio Constraints," Rodney L. White Center for Financial Research Working Papers 17-99, Wharton School Rodney L. White Center for Financial Research.
- Ofek, Eli & Richardson, Matthew & Whitelaw, Robert F., 2004. "Limited arbitrage and short sales restrictions: evidence from the options markets," Journal of Financial Economics, Elsevier, vol. 74(2), pages 305-342, November.
- Denis Gromb & Dimitri Vayanos, 2002.
"Equilibrium and welfare in markets with financially constrained arbitrageurs,"
LSE Research Online Documents on Economics
448, London School of Economics and Political Science, LSE Library.
- Gromb, Denis & Vayanos, Dimitri, 2002. "Equilibrium and welfare in markets with financially constrained arbitrageurs," Journal of Financial Economics, Elsevier, vol. 66(2-3), pages 361-407.
- Gromb, Denis & Vayanos, Dimitri, 2001. "Equilibrium and Welfare in Markets with Financially Constrained Arbitrageurs," CEPR Discussion Papers 3049, C.E.P.R. Discussion Papers.
- Louis Ederington & Jae Ha Lee, 2002. "Who Trades Futures and How: Evidence from the Heating Oil Futures Market," The Journal of Business, University of Chicago Press, vol. 75(2), pages 353-374, April.
- Monika Piazzesi & Eric T. Swanson, 2004.
"Future prices as risk-adjusted forecasts of monetary policy,"
Federal Reserve Bank of San Francisco, issue Mar.
- Piazzesi, Monika & Swanson, Eric T., 2008. "Futures prices as risk-adjusted forecasts of monetary policy," Journal of Monetary Economics, Elsevier, vol. 55(4), pages 677-691, May.
- Monika Piazzesi & Eric Swanson, 2004. "Futures Prices as Risk-adjusted Forecasts of Monetary Policy," NBER Working Papers 10547, National Bureau of Economic Research, Inc.
- Monika Piazzesi & Eric T. Swanson, 2006. "Futures prices as risk-adjusted forecasts of monetary policy," Working Paper Series 2006-23, Federal Reserve Bank of San Francisco.
- Brennan, Michael J & Schwartz, Eduardo S, 1990. "Arbitrage in Stock Index Futures," The Journal of Business, University of Chicago Press, vol. 63(1), pages S7-31, January.
- Mark Mitchell & Todd Pulvino & Erik Stafford, 2002. "Limited Arbitrage in Equity Markets," Journal of Finance, American Finance Association, vol. 57(2), pages 551-584, 04.
- Lucas, Robert E, Jr, 1978. "Asset Prices in an Exchange Economy," Econometrica, Econometric Society, vol. 46(6), pages 1429-45, November.
- Jérôme B. Detemple & Shashidhar Murthy, 1997. "Equilibrium Asset Prices and No-Arbitrage with Portfolio Constraints," CIRANO Working Papers 97s-12, CIRANO.
- Detemple Jerome & Murthy Shashidhar, 1994. "Intertemporal Asset Pricing with Heterogeneous Beliefs," Journal of Economic Theory, Elsevier, vol. 62(2), pages 294-320, April.
When requesting a correction, please mention this item's handle: RePEc:eee:jfinec:v:81:y:2006:i:1:p:143-173. See general information about how to correct material in RePEc.
For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: (Shamier, Wendy)
If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.
If references are entirely missing, you can add them using this form.
If the full references list an item that is present in RePEc, but the system did not link to it, you can help with this form.
If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your profile, as there may be some citations waiting for confirmation.
Please note that corrections may take a couple of weeks to filter through the various RePEc services.