Measuring Systemic Risk

We present an economic model of systemic risk and show that each financial institution's contribution to systemic risk can be measured as its systemic expected shortfall (SES), i.e., its propensity to be undercapitalized when the system as a whole is undercapitalized. SES increases in the institution's leverage and its marginal expected shortfall (MES), i.e., its losses in the tail of the system's loss distribution. Institutions internalize their externality if they are "taxed" based on their SES. We demonstrate empirically the ability of components of SES to predict emerging systemic risk during the financial crisis of 2007-2009, in particular, (i) the outcome of stress tests performed by regulators; (ii) the decline in equity valuations of large financial firms in the crisis; and, (iii) the widening of their credit default swap spreads.

[1]  Alfred Lehar.  Measuring Systemic Risk: A Risk Management Approach , 2005 .

[2]  M. Flannery,et al.  No Pain, No Gain? Effecting Market Discipline Via 'Reverse Convertible Debentures' , 2002 .

[3]  Michael B. Gordy.  A Risk-Factor Model Foundation for Ratings-Based Bank Capital Rules , 2002 .

[4]  Douglas W. Diamond,et al.  Liquidity Shortages and Banking Crises , 2002 .

[5]  E. Prescott.  Can Risk-Based Deposit Insurance Premiums Control Moral Hazard? , 2002 .

[6]  Jon M. Huntsman,et al.  Wharton Risk Management and Decision Processes Center , 2002 .

[7]  R. Reis,et al.  Costs of Banking System Instability: Some Empirical Evidence , 2001 .

[8]  V. Acharya.  A Theory of Systemic Risk and Design of Prudential Bank Regulation , 2001 .

[9]  J. Tirole,et al.  Liquidity and Risk Management , 2000 .

[10]  A. Crockett,et al.  Marrying the micro-and macroprudential dimensions of financial stability , 2000 .

[11]  S. Claessens,et al.  Financial Restructuring in East Asia: Halfway There? , 1999 .

[12]  Kenneth A. Froot.  The Market for Catastrophe Risk: a Clinical Examination , 1999 .

[13]  Philippe Artzner,et al.  Coherent Measures of Risk , 1999 .

[14]  A. Saunders.  Credit Risk Measurement: New Approaches to Value at Risk and Other Paradigms , 1999 .

[15]  J. Rochet,et al.  Interbank Lending and Systemic Risk , 1996 .

[16]  D. Klingebiel,et al.  Bank Insolvencies: Cross-Country Experience , 1996 .

[17]  Philip H. Dybvig,et al.  Bank Runs, Deposit Insurance, and Liquidity , 1983, Journal of Political Economy.

[18]  S. Peltzman.  Toward a More General Theory of Regulation , 1976, The Journal of Law and Economics.

[19]  西野 嘉一郎,et al.  Federal Reserve Bank of New Yorkの制定せる財務諸表様式について , 1951 .