Executive Summary:
Geopolitical developments have become an increasingly important source of market volatility, inflation pressures, supply-chain disruptions, and financial instability. Yet many commonly used measures of geopolitical risk focus on average conditions and may provide limited insight into the extreme events that are most likely to threaten institutions, portfolios, and economies.
This paper introduces a framework for measuring tail geopolitical risk, with a focus on identifying periods when geopolitical developments have the potential to generate unusually severe economic and financial consequences. Rather than concentrating on typical geopolitical conditions, the authors focus on the risks associated with rare but highly disruptive events, the types of events that often drive stress-testing exercises, crisis management decisions, and financial-stability concerns.
The framework combines geopolitical-risk indicators with advanced risk-measurement techniques to isolate the portion of geopolitical risk associated with extreme outcomes. The resulting measure provides a more targeted assessment of geopolitical vulnerabilities and complements traditional approaches that focus on average levels of geopolitical tension.
For CEOs, CROs, boards, and investment committees, the framework offers a practical tool for incorporating geopolitical tail risks into enterprise risk management, strategic planning, and portfolio stress testing. For central banks, regulators, and policymakers, it provides additional insight into emerging vulnerabilities and the potential transmission of geopolitical shocks through the financial system.
The paper’s central message is that institutions should pay close attention not only to how frequently geopolitical events occur, but also to how severe their consequences could be when they do. In an increasingly fragmented and uncertain global environment, understanding tail geopolitical risk is essential for building resilience and improving decision-making under uncertainty.
Three Main Takeaways
- The geopolitical events that matter most to investors, financial institutions, and policymakers are often low-probability, high-impact events that conventional risk measures may underestimate.
- Understanding tail geopolitical risk can improve stress testing, scenario analysis, and institutional preparedness for extreme shocks.
- Measuring geopolitical risk through the lens of tail outcomes provides a more decision-relevant perspective for financial stability surveillance and enterprise risk management.
Special Issue on Emerging Risks by GRI in partnership with the Journal of Portfolio Management