Euro Zone Banks Face Acute Stress Risks Amid Wars, Supply Chain Disruptions

The European Central Bank (ECB) has identified several key risks facing euro zone banks, including wars, supply chain disruptions, and cyberattacks. In a stress test conducted on Friday, the ECB found that some banks may fall short of foreign currency liquidity requirements in case of acute stress.

The test, known as a 'reverse stress test,' involved asking lenders to come up with their own scenarios for dealing with potential crises. The most commonly cited triggers included military conflicts, supply chain disruptions, economic sanctions, macroeconomic confidence effects, political instability, and cyber-related attacks.

While banks' liquidity positions generally remained above regulatory minimum requirements under the various scenarios, the ECB was not satisfied with how some banks made their calculations. It noted that foreign currency liquidity was structurally tighter and stress would be more pronounced for some banks, which could then fall below the 100% minimum liquidity coverage ratio.

The ECB also found that some banks may have underestimated foreign currency risks by projecting limited or no variability in foreign exchange liquidity metrics, limiting their ability to capture funding risk. Past crisis episodes suggest a close link between liquidity and funding distress and banks' solvency positions, the ECB added.