MFG

Business Context and Reporting Period

This Form 6-K filing by Mizuho Financial Group, Inc. (Mizuho) covers the month of July 2009. The report primarily discloses the Group's consolidated capital adequacy status and risk management metrics as of March 31, 2009, based on Japanese GAAP and Basel II regulatory requirements. Mizuho adopted the advanced internal ratings-based approach for calculating credit risk-weighted assets effective March 31, 2009, replacing the foundation internal ratings-based approach used in the prior fiscal year.

Key Financial Metrics (As of March 31, 2009)

Material Changes vs. Prior Period

• Capital Ratios Decline: The consolidated capital adequacy ratio decreased from 11.70% to 10.55%, and the Tier 1 capital ratio fell from 7.40% to 6.38%. This decline is attributed to a significant reduction in retained earnings (from 1,475.7 billion to 607.9 billion yen) and the deduction of 516.0 billion yen in unrealized losses on other securities.
• Methodology Shift: The transition to the advanced internal ratings-based approach for credit risk calculation resulted in a reduction of risk-weighted assets, though capital levels also decreased due to market conditions.
• Increased Credit Losses: Actual credit losses increased by 53.7 billion yen to 1,107.0 billion yen, driven primarily by corporate bankruptcies resulting from the economic downturn.
• Securitization Impact: The Group reported total realized losses of 135 billion yen in FY2008 related to the dislocation in global financial markets, including 126 billion yen in losses on sales of securitization products by banking subsidiaries.

Outlook, Risks, and Management Commentary

• Global Financial Market Dislocation: Management highlighted the worsening impact of U.S. subprime loan issues during FY2009. In response, Mizuho strengthened cash management for foreign currencies, tightened exposure limits for securitization products, and conducted stress testing on risk capital.
• Stress Testing Results: Stress testing indicated an assumed maximum loss of 37.2 billion yen (one-month holding period) and 50.0 billion yen (one-year holding period) due to sharp price drops in securitization products. The Group remains well under the 20% "outlier" threshold for banking book interest rate risk (loss ratio to capital was 8.5%).
• Valuation Adjustments: Due to limited market liquidity, the Group applied "reasonably calculated prices" based on management estimates (using Discounted Cash Flow methods) for the majority of foreign currency-denominated securitization products, rather than broker quotes.
• Preferred Securities: Mizuho redeemed preferred securities issued by Mizuho Preferred Capital (Cayman) Limited in full on June 30, 2009. The Group maintains various other preferred securities and subordinated debt instruments to support Tier 1 and Tier 2 capital.

Key Facts for Investor Verification

• Capital Adequacy: Verify that the 10.55% capital adequacy ratio remains comfortably above the regulatory minimum of 8% despite the decline in retained earnings.
• Unrealized Losses: Confirm the impact of the 516.0 billion yen deduction for unrealized losses on other securities on the Tier 1 capital calculation.
• Securitization Exposure: Review the breakdown of foreign currency-denominated securitization products (approx. 540 billion yen fair value for banking subsidiaries) and the extent of hedging (approx. 50% hedged).
• Valuation Methodology: Assess the reliability of the "reasonably calculated prices" used for illiquid assets, as these estimates significantly influence the reported fair value and unrealized gains/losses.
• Credit Loss Trends: Monitor the trend of actual credit losses, which rose to 1,107.0 billion yen, to gauge the effectiveness of credit risk management in the current economic environment.