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Wolfgang Karl Härdle; Natalia Sirotko-Sibirskaya; Weining Wang (2014)
Publisher: SFB 649, Economic Risk Berlin
Types: Research
Subjects: Value at Risk, C63, C21, Lasso, G32, G01, Systemic Risk, G38, Quantile Single-Index Regression, G18, Systemic Risk Network, HB, Systemic Risk, Systemic Risk Network, Generalized Quantile, Quantile Single-Index Regression, Value at Risk, CoVaR, Lasso, CoVaR, Generalized Quantile, C51
jel: jel:C21, jel:G01, jel:G32, jel:C63, jel:C51, jel:G38, jel:G18
ddc: ddc:330
CoVaR is a measure for systemic risk of the networked financial system conditional on institutions being under distress. The analysis of systemic risk is the focus of recent econometric analyses and uses tail event and network based techniques. Here, in this paper we bring tail event and network dynamics together into one context. In order to pursue such joint efforts, we propose a semiparametric measure to estimate systemic interconnectedness across financial institutions based on tail-driven spillover effects in a high dimensional framework. The systemically important institutions are identified conditional to their interconnectedness structure. Methodologically, a variable selection technique in a time series setting is applied in the context of a single-index model for a generalized quantile regression framework. We could thus include more financial institutions into the analysis to measure their tail event interdependencies and, at the same time, be sensitive to non-linear relationships between them. Network analysis, its behaviour and dynamics, allows us to characterize the role of each financial industry group in 2007–2012: the depositories received and transmitted more risk among other groups, the insurers were less affected by the financial crisis. The proposed TENET - Tail Event driven NETwork technique allows us to rank the Systemic Risk Receivers and Systemic Risk Emitters in the US financial market.

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