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Tail Dependence of Factor Models

Yannick Malevergne

Université Paris I Panthéon-Sorbonne - Laboratoire PRISM

Didier Sornette

Swiss Finance Institute; ETH Zürich - Department of Management, Technology, and Economics (D-MTEC)

March 2002

Using the framework of factor models, we establish the general expression of the coefficient of tail dependence between the market and a stock (i.e., the probability that the stock incurs a large loss, assuming that the market has also undergone a large loss) as a function of the parameters of the underlying factor model and of the tail parameters of the distributions of the factor and of the idiosyncratic noise of each stock. Our formula holds for arbitrary marginal distributions and in addition does not require any parameterization of the multivariate distributions of the market and stocks. The determination of the extreme parameter, which is not accessible by a direct statistical inference, is made possible by the measurement of parameters whose estimation involves a significant part of the data with sufficient statistics. Our empirical tests find a good agreement between the calibration of the tail dependence coefficient and the realized large losses over the period from 1962 to 2000. Nevertheless, a bias is detected which suggests the presence of an outlier in the form of the crash of October 1987.

Number of Pages in PDF File: 29

Keywords: Factor model, Nonparametric estimation, Tail dependence

JEL Classification: C14, G10

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Date posted: February 23, 2002  

Suggested Citation

Malevergne, Yannick and Sornette, Didier, Tail Dependence of Factor Models (March 2002). Available at SSRN: https://ssrn.com/abstract=301266 or http://dx.doi.org/10.2139/ssrn.301266

Contact Information

Yannick Malevergne
Université Paris I Panthéon-Sorbonne - Laboratoire PRISM ( email )
17 rue de la Sorbonne
Paris, 75005
Didier Sornette (Contact Author)
Swiss Finance Institute ( email )
c/o University of Geneve
40, Bd du Pont-d'Arve
1211 Geneva, CH-6900

ETH Zürich - Department of Management, Technology, and Economics (D-MTEC) ( email )
Scheuchzerstrasse 7
Zurich, ZURICH CH-8092
41446328917 (Phone)
41446321914 (Fax)
HOME PAGE: http://www.er.ethz.ch/
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