The recent financial crisis has revealed significant externalities and systemic risks that arise from the interconnectedness of financial intermediaries' risk portfolios. We develop a model in which the negative externality arises because intermediaries' actions to diversify that are optimal for individual intermediaries may prove to be suboptimal for society. We show that the externality depends critically on the distributional properties of the risks. The optimal social outcome involves less risk-sharing, but also a lower probability for massive collapses of intermediaries. We derive the exact conditions under which risk-sharing restrictions create a socially preferable outcome. Our analysis has implications for regulation of financial institutions and risk management.
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.:
- Albert S. Kyle, 2001. "Contagion as a Wealth Effect," Journal of Finance, American Finance Association, vol. 56(4), pages 1401-1440, 08.
- Rustam Ibragimov & Dwight Jaffee & Johan Walden, 2009. "Nondiversification Traps in Catastrophe Insurance Markets," Review of Financial Studies, Society for Financial Studies, vol. 22(3), pages 959-993, March.
- Ibragimov, Rustam & Walden, Johan, 2007. "The limits of diversification when losses may be large," Scholarly Articles 2624460, Harvard University Department of Economics.
- Jansen, Dennis W & de Vries, Casper G, 1991.
"On the Frequency of Large Stock Returns: Putting Booms and Busts into Perspective,"
The Review of Economics and Statistics,
MIT Press, vol. 73(1), pages 18-24, February.
- Dennis W. Jansen & Casper de Vries, 1988. "On the frequency of large stock returns: putting booms and busts into perspective," Working Papers 1989-006, Federal Reserve Bank of St. Louis.
- Markus K. Brunnermeier & Lasse Heje Pedersen, 2009.
"Market Liquidity and Funding Liquidity,"
Review of Financial Studies,
Society for Financial Studies, vol. 22(6), pages 2201-2238, June.
- Lasse Heje Pederson & Markus K Brunnermeier, 2007. "Market Liquidity and Funding Liquidity," FMG Discussion Papers dp580, Financial Markets Group.
- Markus K. Brunnermeier & Lasse Heje Pedersen, 2007. "Market liquidity and funding liquidity," LSE Research Online Documents on Economics 24478, London School of Economics and Political Science, LSE Library.
- Brunnermeier, Markus K & Pedersen, Lasse Heje, 2007. "Market Liquidity and Funding Liquidity," CEPR Discussion Papers 6179, C.E.P.R. Discussion Papers.
- Markus K. Brunnermeier & Lasse Heje Pedersen, 2007. "Market Liquidity and Funding Liquidity," NBER Working Papers 12939, National Bureau of Economic Research, Inc.
- Ricardo J. Caballero & Arvind Krishnamurthy, 2007.
"Collective Risk Management in a Flight to Quality Episode,"
NBER Working Papers
12896, National Bureau of Economic Research, Inc.
- Ricardo J. Caballero & Arvind Krishnamurthy, 2008. "Collective Risk Management in a Flight to Quality Episode," Journal of Finance, American Finance Association, vol. 63(5), pages 2195-2230, October.
- Xavier Gabaix & Parameswaran Gopikrishnan & Vasiliki Plerou & H. Eugene Stanley, 2006.
"Institutional Investors and Stock Market Volatility,"
The Quarterly Journal of Economics,
Oxford University Press, vol. 121(2), pages 461-504.
- Xavier Gabaix & Parameswaran Gopikrishnan & Vasiliki Plerou & H. Eugene Stanley, 2005. "Institutional Investors and Stock Market Volatility," NBER Working Papers 11722, National Bureau of Economic Research, Inc.
- Kenneth A. Froot & David S. Scharfstein & Jeremy C. Stein, 1992.
"Risk Management: Coordinating Corporate Investment and Financing Policies,"
NBER Working Papers
4084, National Bureau of Economic Research, Inc.
- Froot, Kenneth A & Scharfstein, David S & Stein, Jeremy C, 1993. " Risk Management: Coordinating Corporate Investment and Financing Policies," Journal of Finance, American Finance Association, vol. 48(5), pages 1629-1658, December.
- Eugene F. Fama, 1965. "Portfolio Analysis in a Stable Paretian Market," Management Science, INFORMS, vol. 11(3), pages 404-419, January.
- Douglas W. Diamond & Philip H. Dybvig, 2000.
"Bank runs, deposit insurance, and liquidity,"
Federal Reserve Bank of Minneapolis, issue Win, pages 14-23.
- Wagner, Wolf, 2010.
"Diversification at financial institutions and systemic crises,"
Journal of Financial Intermediation,
Elsevier, vol. 19(3), pages 373-386, July.
- Wagner, W.B., 2006. "Diversification at Financial Institutions and Systemic Crises," Discussion Paper 2006-71, Tilburg University, Center for Economic Research.
- Loretan, M. & Phillips, P.C.B., 1992.
"Testing the Covariance Stationarity of Heavy-Tailed Time Series: An Overview of the Theory with Applications to Several Financial Datasets,"
9208, Wisconsin Madison - Social Systems.
- Loretan, Mico & Phillips, Peter C. B., 1994. "Testing the covariance stationarity of heavy-tailed time series: An overview of the theory with applications to several financial datasets," Journal of Empirical Finance, Elsevier, vol. 1(2), pages 211-248, January.
- Kenneth A. Froot & Jeremy C. Stein, 1996.
"Risk Management, Capital Budgeting and Capital Structure Policy for Financial Institutions: An Integrated Approach,"
NBER Working Papers
5403, National Bureau of Economic Research, Inc.
- Froot, Kenneth A. & Stein, Jeremy C., 1998. "Risk management, capital budgeting, and capital structure policy for financial institutions: an integrated approach," Journal of Financial Economics, Elsevier, vol. 47(1), pages 55-82, January.
- Kenneth A. Froot & Jeremy C. Stein, 1996. "Risk Management, Capital Budgeting and Capital Structure Policy for Financial Institutions: An Integrated Approach," Center for Financial Institutions Working Papers 96-28, Wharton School Center for Financial Institutions, University of Pennsylvania.
- Bernanke, Ben S, 1983.
"Nonmonetary Effects of the Financial Crisis in Propagation of the Great Depression,"
American Economic Review,
American Economic Association, vol. 73(3), pages 257-276, June.
- Ben S. Bernanke, 1983. "Non-Monetary Effects of the Financial Crisis in the Propagation of the Great Depression," NBER Working Papers 1054, National Bureau of Economic Research, Inc.
- Jean-Charles Rochet & Jean Tirole, 1996.
"Interbank lending and systemic risk,"
Board of Governors of the Federal Reserve System (U.S.), pages 733-765.
- Michael B. Gordy, 2000. "Credit VAR and risk-bucket capital rules: a reconciliation," Proceedings 685, Federal Reserve Bank of Chicago.
- Rustam Ibragimov, 2005. "Portfolio Diversification and Value at Risk Under Thick-Tailedness," Harvard Institute of Economic Research Working Papers 2086, Harvard - Institute of Economic Research.
- Rustam Ibragimov, 2009. "Portfolio diversification and value at risk under thick-tailedness," Quantitative Finance, Taylor & Francis Journals, vol. 9(5), pages 565-580.
- Xavier Gabaix, 2009.
"Power Laws in Economics and Finance,"
Annual Review of Economics,
Annual Reviews, vol. 1(1), pages 255-294, 05.
- Acharya, Viral V, 2009.
"A Theory of Systemic Risk and Design of Prudential Bank Regulation,"
CEPR Discussion Papers
7164, C.E.P.R. Discussion Papers.
- Acharya, Viral V., 2009. "A theory of systemic risk and design of prudential bank regulation," Journal of Financial Stability, Elsevier, vol. 5(3), pages 224-255, September.
- Rustam Ibragimov & Dwight Jaffee & Johan Walden, 2010. "Pricing and Capital Allocation for Multiline Insurance Firms," Journal of Risk & Insurance, The American Risk and Insurance Association, vol. 77(3), pages 551-578.
- Rustam Ibragimov & Johan Walden, 2006. "The Limits of Diversification When Losses May Be Large," Harvard Institute of Economic Research Working Papers 2104, Harvard - Institute of Economic Research.
- Donald W.K. Andrews, 2004.
"Cross-section Regression with Common Shocks,"
Yale School of Management Working Papers
ysm401, Yale School of Management.
- Samuelson, Paul A., 1967. "General Proof that Diversification Pays," Journal of Financial and Quantitative Analysis, Cambridge University Press, vol. 2(01), pages 1-13, March.
- Lux, Thomas, 1998. "The socio-economic dynamics of speculative markets: interacting agents, chaos, and the fat tails of return distributions," Journal of Economic Behavior & Organization, Elsevier, vol. 33(2), pages 143-165, January.
- Kashyap, Anil K. & Rajan, Raghuram G. & Stein, Jeremy C., 2008. "Rethinking capital regulation," Proceedings - Economic Policy Symposium - Jackson Hole, Federal Reserve Bank of Kansas City, pages 431-471.
- Conley, T. G., 1999. "GMM estimation with cross sectional dependence," Journal of Econometrics, Elsevier, vol. 92(1), pages 1-45, September.
- Jaffee Dwight M., 2009. "Monoline Regulations to Control the Systemic Risk Created by Investment Banks and GSEs," The B.E. Journal of Economic Analysis & Policy, De Gruyter, vol. 9(3), pages 1-22, March.
- Ibragimov, Rustam & Walden, Johan, 2007. "The limits of diversification when losses may be large," Journal of Banking & Finance, Elsevier, vol. 31(8), pages 2551-2569, August.
- Dwight Jaffee, 2006. "Monoline Restrictions, with Applications to Mortgage Insurance and Title Insurance," Review of Industrial Organization, Springer;The Industrial Organization Society, vol. 28(2), pages 83-108, 03.
- Richard B. Olsen & Ulrich A. Müller & Michel M. Dacorogna & Olivier V. Pictet & Rakhal R. Davé & Dominique M. Guillaume, 1997. "From the bird's eye to the microscope: A survey of new stylized facts of the intra-daily foreign exchange markets (*)," Finance and Stochastics, Springer, vol. 1(2), pages 95-129.
When requesting a correction, please mention this item's handle: RePEc:eee:jfinec:v:99:y:2011:i:2:p:333-348. 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.