MFG

Business Context and Reporting Period

Company: Mizuho Financial Group, Inc.
Filing Type: Form 6-K (Report of Foreign Private Issuer)
Reporting Period: Data presented as of September 30, 2009, and for the six months ended September 30, 2009.
Accounting Basis: Japanese GAAP pursuant to Japanese regulatory requirements.
Key Context: The filing details the Group's capital adequacy under the Basel II framework. Notably, the Group adopted the Advanced Internal Ratings-Based Approach (IRB) for credit risk and the Advanced Measurement Approach (AMA) for operational risk effective September 30, 2009.

Key Financial Metrics

Capital Adequacy (Consolidated - BIS Standard):

• Capital Adequacy Ratio: 12.91% (as of Sep 30, 2009) vs. 11.45% (as of Sep 30, 2008).
• Tier 1 Capital Ratio: 8.71% (as of Sep 30, 2009) vs. 7.36% (as of Sep 30, 2008).
• Total Risk-Based Capital: ¥7,632.6 billion (as of Sep 30, 2009) vs. ¥7,381.2 billion (as of Sep 30, 2008).
• Tier 1 Capital: ¥5,148.7 billion (as of Sep 30, 2009) vs. ¥4,747.0 billion (as of Sep 30, 2008).
• Risk-Weighted Assets (RWA): ¥59,102.3 billion (as of Sep 30, 2009) vs. ¥64,464.8 billion (as of Sep 30, 2008).

Required Capital (Consolidated):

• Total Required Capital: ¥4,728.1 billion (as of Sep 30, 2009) vs. ¥5,157.1 billion (as of Sep 30, 2008).
• Credit Risk Required Capital: ¥5,973.0 billion (as of Sep 30, 2009).
• Market Risk Equivalent: ¥110.7 billion (as of Sep 30, 2009).
• Operational Risk Equivalent: ¥313.2 billion (as of Sep 30, 2009).

Asset Quality and Losses:

• Total Reserves for Possible Losses on Loans: ¥942.0 billion (as of Sep 30, 2009) vs. ¥687.7 billion (as of Sep 30, 2008).
• Actual Credit Losses (12-month period ended Sep 30, 2009): ¥1,228.9 billion (up from ¥946.3 billion in the prior period).
• Exposure Past Due 3+ Months or in Default: ¥2,265.4 billion (as of Sep 30, 2009) vs. ¥1,865.5 billion (as of Sep 30, 2008).

Market Risk (Value at Risk - VaR):

• End of Period VaR (Sep 30, 2009): ¥3.7 billion.
• Maximum VaR (6 months ended Sep 30, 2009): ¥4.3 billion.

Material Changes Versus Prior Period

• Capital Strength Improvement: The consolidated capital adequacy ratio increased by 146 basis points to 12.91%, driven by a ¥401.7 billion increase in Tier 1 capital and a reduction in risk-weighted assets of approximately ¥5.36 trillion.
• Methodology Shift: The calculation of capital adequacy shifted from the Foundation IRB and Gross Profit Allocation approaches to the Advanced IRB and Advanced Measurement Approach (AMA) for operational risk. This change contributed to the reduction in total required capital.
• Increased Credit Losses: Actual credit losses increased by ¥282.6 billion year-over-year, primarily due to deteriorating obligor ratings in the corporate sector reflecting the domestic economic downturn.
• Reserve Build-up: Specific reserves for possible losses on loans increased by ¥51.3 billion to ¥357.0 billion, with significant increases in the "Others" category (¥64.4 billion increase).
• Securitization Exposure: Total securitization exposure as an originator decreased slightly to ¥1,023.6 billion. However, exposure as an investor increased to ¥3,295.3 billion, with required capital rising to ¥86.6 billion.

Guidance, Outlook, Risks, and Unusual Items

Management Commentary on Financial Markets: The filing includes a detailed analysis of the impact of the global financial market dislocation stemming from US subprime loan issues. The Group reported a net realized gain/loss of -¥3 billion for the first half of fiscal 2009 related to these issues.

Subprime and Securitization Holdings:

• US Subprime Exposure: The Group holds no direct US subprime mortgage loan-related assets in its banking subsidiaries. Holdings of RMBS backed by US subprime loans in the securities subsidiary were negligible (approx. ¥0 billion fair value).
• Foreign Currency Securitization Products: Banking subsidiaries held ¥532 billion in foreign currency denominated securitization products as of Sep 30, 2009, with unrealized losses of ¥19 billion. Approximately 60% of these were hedged.
• CDS Counterparty Risk: The Group holds Credit Default Swaps (CDS) related to securitization products with a notional amount of ¥172 billion. Reserves for counterparty risks (NPV) were ¥4 billion.

Operational Risk: The Group implemented the Advanced Measurement Approach (AMA) for operational risk, utilizing internal loss data, external loss data, and scenario analysis. The operational risk equivalent increased to ¥313.2 billion.

Outlier Criteria: Under the Basel II outlier framework, the loss ratio to broadly-defined capital was 9.1% as of September 30, 2009, well below the 20% threshold that would trigger outlier status.

Investor Verification Checklist

• Capital Adequacy Methodology: Verify the impact of the transition to Advanced IRB and AMA on future capital requirements and risk-weighted asset calculations.
• Credit Loss Trends: Monitor the trajectory of actual credit losses, particularly in the corporate sector, which drove the 30% increase in losses year-over-year.
• Securitization Exposure: Review the composition of the ¥3.3 trillion securitization exposure held as an investor, specifically the concentration in lower-rated tranches and foreign assets.
• Subprime Hedging: Assess the effectiveness of hedging strategies (approx. 60% coverage) for foreign currency denominated securitization products given the unrealized losses of ¥19 billion.
• Reserve Adequacy: Evaluate the sufficiency of the ¥942 billion in loan loss reserves against the rising exposure past due (¥2.27 trillion) and the specific increase in reserves for the "Others" category.