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Risk-taking in financial networks

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  • Belhaj, Mohamed
  • Bourlès, Renaud
  • Deroïan, Frédéric

Abstract

We analyze risk-taking behaviors of financial institutions linked through cross-shareholding relationships. We endogenize risk exposure accounting for default risk by modeling Value-at-Risk-based risk-management – that is targeted default probabilities – in the presence of extreme risk on asset return. We relate risk-taking behaviors to a centrality measure that captures the propagation of losses within the network, and show that network integration increases risk-taking levels and expected return. However, we show that network integration also results in larger expected shortfall, indicating greater exposure to losses for creditors. We explore the impact of the cross-shareholding network on the implementation of regulation, particularly through capital requirements, and identify key institutions, those with the highest influence on aggregate investments in risky assets.

Suggested Citation

  • Belhaj, Mohamed & Bourlès, Renaud & Deroïan, Frédéric, 2026. "Risk-taking in financial networks," Games and Economic Behavior, Elsevier, vol. 156(C), pages 35-57.
    • Handle: RePEc:eee:gamebe:v:156:y:2026:i:c:p:35-57
    DOI: 10.1016/j.geb.2025.11.006
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