Research on Risk Spillover Effects of A-Share Sector Indices Based on EVT-GARCH-Quantile Regression

Wenpei Yang

doi:10.47297/wspdecWSP2515-797317.20250906

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Research on Risk Spillover Effects of A-Share Sector Indices Based on EVT-GARCH-Quantile Regression

Volume 9, Issue 6

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Research on Risk Spillover Effects of A-Share Sector Indices Based on EVT-GARCH-Quantile Regression
Research on Risk Spillover Effects of A-Share Sector Indices Based on EVT-GARCH-Quantile Regression
School of Economics and Management, China University of Geosciences (Wuhan), Wuhan, Hubei, 430074, China
Vol. 9, Issue 6, Pages: 87-94(2025)
Published：30 June 2025
DOI：10.47297/wspdecWSP2515-797317.20250906
Accepted：

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Yang Wenpei.Research on Risk Spillover Effects of A-Share Sector Indices Based on EVT-GARCH-Quantile Regression[J].Development Economics of China,2025,09(06):87-94.
DOI：

Yang Wenpei.Research on Risk Spillover Effects of A-Share Sector Indices Based on EVT-GARCH-Quantile Regression[J].Development Economics of China,2025,09(06):87-94. DOI： 10.47297/wspdecWSP2515-797317.20250906.

摘要

Abstract

This study investigates the risk spillover effects among A-share sector indices by constructing an integrated EVT-GARCH-quantile regression framework. Using daily data from five major sector indices (including CSI 300

Financials

Technology

etc.) between January 2020 and June 2024

we employ the EVT-POT model to characterize tail distributions

the DCC-GARCH model to capture dynamic volatility correlations

and quantile regression to quantify spillover intensities under extreme risks. Key findings include: (1) The CSI 300 exerts significantly stronger risk spillovers on Financials and Technology sectors than on Consumer Staples and Healthcare

with Financials' %CoVaR reaching 39.62% at the 5% quantile; (2) Under extreme risk scenarios

spillover effects intensify by 30%-50% compared to normal conditions

confirming nonlinear tail risk transmission. The study provides theoretical foundations for regulators to establish sector-specific risk early-warning mechanisms and for investors to optimize cross-sector asset allocation during market turmoil.

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references

Tobias , Adrian , and Markus K . Brunnermeier . " CoVaR." The American Economic Review 106.7 ( 2016 ): 1705.

Diebold , Francis X. , and Kamil Yılmaz . " On the network topology of variance decompositions: Measuring the connectedness of financial firms ." Journal of econometrics 182.1 ( 2014 ): 119 - 134 .

Guo , Kun , et al . " Cross-country risk spillovers of ESG stock indices: Dynamic patterns and the role of climate transition risks ." International Review of Financial Analysis 95 ( 2024 ): 103477 .

McNeil , Alexander J. , and Rüdiger Frey . " Estimation of tail-related risk measures for heteroscedastic financial time series: an extreme value approach ." Journal of empirical finance 7 . 3 - 4 ( 2000 ): 271 - 300 .

Embrechts , Paul , Alexander McNeil , and Daniel Straumann . " Correlation and dependence in risk management: properties and pitfalls ." Risk management : value at risk and beyond 1 ( 2002 ): 176 - 223 .

Aielli , Gian Piero . " Dynamic conditional correlation: on properties and estimation ." Journal of Business & Economic Statistics 31.3 ( 2013 ): 282 - 299 .

White , Halbert , Tae-Hwan Kim , and Simone Manganelli . " VAR for VaR: Measuring tail dependence using multivariate regression quantiles ." Journal of econometrics 187.1 ( 2015 ): 169 - 188 .

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