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Journal of Financial Economics Vol. 104 No. 3 2012

Econometric measures of connectedness and systemic risk in the finance and insurance sectors

Monica Billio1; Mila Getmansky2; Andrew W. Lo3; Loriana Pelizzon1

1 University of Venice and SSAV, Department of Economics, Fondamenta San Giobbe 873, 30100 Venice, Italy · 2 University of Massachusetts Amherst · 3 Massachusetts Institute of Technology

open access

Abstract

We propose several econometric measures of connectedness based on principal-components analysis and Granger-causality networks, and apply them to the monthly returns of hedge funds, banks, broker/dealers, and insurance companies. We find that all four sectors have become highly interrelated over the past decade, likely increasing the level of systemic risk in the finance and insurance industries through a complex and time-varying network of relationships. These measures can also identify and quantify financial crisis periods, and seem to contain predictive power in out-of-sample tests. Our results show an asymmetry in the degree of connectedness among the four sectors, with banks playing a much more important role in transmitting shocks than other financial institutions.

DOI
10.1016/j.jfineco.2011.12.010
Volume
104
Issue
3
Pages
535-559
Language
en
Sources
crossref bibtex:phds-export.bib openalex

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