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Title A new heuristic measure of fragility and tail risks : application to stress testing / prepared by Nassim N. Taleb [and others]
Published [Washington, D.C.] : International Monetary Fund, ©2012

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Description 1 online resource (24 pages)
Series IMF working paper ; WP/216
IMF working paper ; WP/12/216.
Contents Cover; Contents; I. Introduction; II. Review of Concepts to Assess Fragility; A. The Current State of Stress Testing; B.A Simple Heuristic to Detect Fragility; Figures; 1. Why the Concave is Hurt by Tail Events; C. How Can the Simple Heuristic Enhance Stress Tests?; III. The Heuristic Applied to the Outcome of Stress Tests; A. Purpose for the Use of the Heuristic; 2. Illustration of the Use of the Heuristic; 3. Fragile and Antifragile Outcomes of Stress Tests; B. Case Study I: The Simple Heuristic Applied to Bank Stress Tests; Tables
1. The Heuristic Applied to the Outcome of Macroeconomic Stress Tests for the Largest U.S. BanksC. Case Study II: The Simple Heuristic Applied to Public Debt; 2. Overall Fragility of Banks; 3. Change in Net Debt Under Various Scenarios; IV. How to Apply the Simple Heuristic in IMF Stress Tests; 4. Illustration of Debt Dynamics Under Various Scenarios; 5. The Simple Heuristic as an Integral Part of Stress Test Frameworks; V. Conclusion; Appendices; I. Details on Macroeconomic Bank Stress Test; II. Details on Public Debt Stress Test; References
Summary This paper presents a simple heuristic measure of tail risk, which is applied to individual bank stress tests and to public debt. Stress testing can be seen as a first order test of the level of potential negative outcomes in response to tail shocks. However, the results of stress testing can be misleading in the presence of model error and the uncertainty attending parameters and their estimation. The heuristic can be seen as a second order stress test to detect nonlinearities in the tails that can lead to fragility, i.e., provide additional information on the robustness of stress tests. It also shows how the measure can be used to assess the robustness of public debt forecasts, an important issue in many countries. The heuristic measure outlined here can be used in a variety of situations to ascertain an ordinal ranking of fragility to tail risks
Notes Title from PDF title page (IMF Web site, viewed August 31, 2012)
"Monetary and Capital Markets Department."
"September 2012."
Bibliography Includes bibliographical references
Notes English
Subject Banks and banking -- Mathematical models
Banks and banking -- Forecasting
Debts, Public -- Mathematical models
Debts, Public -- Forecasting
BUSINESS & ECONOMICS -- Finance.
Banks and banking -- Forecasting
Banks and banking -- Mathematical models
Debts, Public -- Mathematical models
Form Electronic book
Author Taleb, Nassim Nicholas, 1960- author.
International Monetary Fund. Monetary and Capital Markets Department.
ISBN 9781475595659
1475595654
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9781475505665
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9781475514971
1475570732
9781475570731