2011年-IMF国际货币组织全球_Guernsey_Financial_Sector_Assessment_Program_Update_36页_556kb

Summary of Guernsey: Financial Sector Assessment Program Update—Technical Note on Stress Testing: Banking and Insurance

Core Content

This document outlines the stress testing methodology and results for the banking and insurance sectors in Guernsey, conducted as part of the Financial Sector Assessment Program (FSAP) Update in December 2010. The stress tests were designed to evaluate the resilience of the financial system to potential shocks, particularly those arising from a double dip recession. The tests were based on the financial positions of institutions as of the end of 2009 and reflected both the actual experience of the financial crisis and the regulatory context of the Crown Dependencies.

The stress testing approach was aligned with previous FSAP updates in Jersey and the Isle of Man, but slightly more conservative due to the specific conditions and experiences of Guernsey's financial sector. The report also highlights the need for ongoing monitoring and the development of more robust stress testing frameworks.

Main Points

Banking Sector

• Coverage: The stress tests included 19 subsidiaries of foreign banks (out of 21 on the island), and in the case of liquidity tests, five foreign branches were also included. These represented a significant portion of the banking sector's assets and liquidity risk.
• Method: Two approaches were used:
  • Top-down (TD): Conducted by the IMF mission in collaboration with the Guernsey Financial Services Commission (GFSC).
  • Bottom-up (BU): Performed by the banks themselves using their internal data and risk models.
• Metrics and Calibration of Shocks:
  • Credit Risk: Banks were most vulnerable to credit risk, particularly from large exposures and parent exposure.
  • Foreign Exchange (FX) Risk: FX rate fluctuations were a significant concern.
  • Liquidity Risk: A liquidity shock was defined as daily withdrawals exceeding 15% of the remaining balance for 5 consecutive days (cumulative 56%).
• Results of Solvency Tests:
  • Three banks would require recapitalization under a severe macroeconomic shock.
  • The capital adequacy ratio (CAR) of the banking sector had increased from 15% in 2008 to 19% by the end of 2009.
  • Return on equity (ROE) dropped from around 15% in 2007 to below 11% in 2008, indicating ongoing stress.
  • The most visible sign of stress was the failure of a subsidiary of the Icelandic bank Landsbanki, with depositors expected to recover around 90% of their losses.
• Recommendations:
  • Future stress tests should be risk-based, using Value-at-Risk (VaR) methods.
  • Improve off-site data for top-down stress tests, especially for monitoring large exposures.
  • Authorities should conduct regular macro-prudential analysis including stress tests.
  • Encourage banks to develop internal stress testing and risk mitigation measures.

Insurance Sector

• Coverage: The stress tests included insurers of systemic importance and those with riskier balance sheet structures.
• Method: Bottom-up stress tests were conducted using standardized frameworks, with the GFSC providing support.
• Metrics and Calibration of Shocks:
  • Interest Rate Risk: A major concern for insurers.
  • Asset Price Risk: Also significant, especially given exposure to foreign assets.
  • Operational Risk: Not explicitly tested, but reflected in economic capital calculations.
• Results:
  • Up to three insurers could be adversely affected by a severe macroeconomic shock.
  • The insurance sector is relatively robust due to high capitalization.
• Recommendations:
  • Future stress tests should be based on economic capital rather than statutory requirements.
  • Improve data for on- and off-site stress tests.
  • Encourage insurers to develop internal stress testing and risk mitigation strategies.
  • Collect financial soundness indicators (FSIs) for the investment sector to enhance monitoring and future stress testing.

Key Information

• Stress Testing Objectives: To assess the vulnerability of the financial system to potential shocks, including macroeconomic, credit, and liquidity risks.
• Data Sources: The tests were based on the financial positions of institutions as of end 2009 and utilized data from the GFSC and internal models of the institutions.
• Scenario Analysis: A global double dip scenario was used to simulate the impact of a severe macroeconomic shock on the financial system.
• Sector Structure:
  • The banking sector represented 43.5% of total financial system assets in 2009.
  • The insurance sector accounted for 6.7% of total assets.
• Liquidity Risk: Banks are vulnerable if daily withdrawals exceed 15% of the remaining balance for 5 consecutive days.
• Capital Adequacy: The banking sector had a CAR of around 19% in 2009, up from 15% in 2008.
• Economic Impact: The financial sector contributes significantly to Guernsey's GDP, with a 35% contribution in 2009.
• Recommendations for Improvement:
  • Enhance data quality for stress testing.
  • Implement more comprehensive risk-based stress testing.
  • Regularly assess macro-prudential risks.
  • Develop internal risk mitigation strategies for both banks and insurers.

Conclusion

The stress tests for Guernsey's banking and insurance sectors indicate a relatively robust financial system, but with vulnerabilities to low-frequency, high-impact events. The tests were more conservative than those in other Crown Dependencies due to the unique financial environment and actual crisis experiences. Continued monitoring and improved data collection are essential for maintaining financial stability and preparing for future shocks.