Business Context and Reporting Period
This Form 6-K filing by Mizuho Financial Group, Inc. (Mizuho) discloses capital adequacy and risk management information based on Japanese GAAP and Basel III standards. The data reflects the consolidated financial position as of March 31, 2015, with comparative figures for March 31, 2014. The report covers the Mizuho Financial Group and its major consolidated subsidiaries, including Mizuho Bank, Ltd., Mizuho Trust & Banking Co., Ltd., and Mizuho Securities Co., Ltd.
Key Financial Metrics
Capital Adequacy (Consolidated)
| Metric | March 31, 2014 | March 31, 2015 |
|---|---|---|
| Total Capital Ratio | 14.36% | 14.58% |
| Tier 1 Capital Ratio | 11.35% | 11.50% |
| Common Equity Tier 1 (CET1) Ratio | 8.80% | 9.43% |
| Total Capital (Billions of Yen) | 8,655.9 | 9,508.4 |
| Tier 1 Capital (Billions of Yen) | 6,844.7 | 7,500.3 |
| CET1 Capital (Billions of Yen) | 5,304.4 | 6,153.1 |
| Risk-Weighted Assets (Billions of Yen) | 60,274.0 | 65,191.9 |
Liquidity and Leverage
- Leverage Ratio: 3.83% as of March 31, 2015 (Tier 1 Capital / Total Exposures).
- Total Exposures: ¥195,363.7 billion (including on-balance sheet, derivatives, repos, and off-balance sheet items).
- Global Systemically Important Bank (G-SIB) Indicators: Total exposures increased to ¥215,213.7 billion; Cross-jurisdictional claims rose to ¥44,114.4 billion.
Credit Risk Exposure
- Total Credit Risk Exposure: ¥183,373.2 billion (up from ¥168,917.1 billion in 2014).
- Exposure Past Due 3+ Months or in Default: ¥1,559.6 billion (up from ¥1,411.4 billion).
- Reserves for Possible Losses on Loans: Total ending balance was ¥525.4 billion (General: ¥344.4 billion; Specific: ¥180.3 billion).
- Actual Losses (FY 2015): ¥133.6 billion, driven primarily by a significant increase in corporate exposure losses (¥128.1 billion).
Market Risk (Value-at-Risk)
- Trading Activities VaR (FY 2015 Average): ¥4.4 billion (Daily average).
- Banking Activities VaR (FY 2015 Average): ¥307.9 billion (Monthly average).
- Stressed VaR (Trading): Average of ¥13.2 billion for FY 2015.
Material Changes vs. Prior Period
- Capital Strength: All capital ratios improved year-over-year. The CET1 ratio increased by 63 basis points to 9.43%, driven by a rise in retained earnings and common equity capital.
- Asset Growth: Total assets increased to ¥189.7 trillion. Risk-weighted assets grew by approximately 8.2% to ¥65.2 trillion.
- Credit Quality: While total exposure increased, the specific reserve for possible losses on loans decreased by ¥36.4 billion to ¥180.3 billion. However, actual losses surged to ¥133.6 billion, primarily due to corporate sector write-offs.
- Market Risk: The average daily VaR for trading activities decreased by ¥1.3 billion compared to the prior year, while banking book VaR increased by ¥54.4 billion, reflecting interest rate sensitivity.
- Securitization: Total securitization exposure as an investor increased to ¥2,021.0 billion, with a notable rise in auto loan and corporate exposures.
Guidance, Outlook, and Risk Management
Management Commentary: Mizuho maintains a high level of financial soundness, with capital ratios significantly exceeding minimum regulatory requirements. The group continues to apply the Advanced Internal Ratings-Based Approach (IRB) for credit risk and the Advanced Measurement Approach (AMA) for operational risk.
Risk Management Highlights:
- Credit Risk: The group utilizes a dual approach of "credit management" (transaction-level) and "credit portfolio management" (statistical). Stress testing is conducted regularly to ensure capital adequacy under adverse scenarios.
- Market Risk: Limits are set based on risk capital allocations. The group is not classified as an "outlier" under the Basel III interest rate risk framework, with losses under stress scenarios representing 5.5% of broadly-defined capital (well below the 20% threshold).
- Liquidity Risk: A group-wide framework monitors liquidity stages (Normal, Anxious, Crisis) using Early Warning Indicators (EWIs). Stress testing is performed to evaluate the sufficiency of liquidity reserves.
- Operational Risk: The AMA model incorporates internal loss data, external data, and scenario analysis. No expected losses were excluded in the 2015 measurement.
Compensation: The Compensation Committee, composed entirely of outside directors, oversees executive compensation. Variable compensation includes deferred payments and clawback provisions linked to performance and risk outcomes.
Key Facts for Investor Verification
- Capital Adequacy: Verify the sustainability of the 9.43% CET1 ratio against future regulatory requirements and potential capital outflows.
- Corporate Credit Losses: Investigate the drivers behind the ¥128.1 billion in actual corporate losses, which significantly impacted the FY 2015 loss profile.
- Securitization Exposure: Review the composition of the ¥2.0 trillion securitization portfolio held as an investor, particularly the concentration in auto loans and corporate assets.
- Interest Rate Sensitivity: Monitor the banking book's sensitivity to interest rate changes, as the loss ratio to capital under stress scenarios increased to 5.5%.
- Overseas Exposure: Assess the growth in cross-jurisdictional claims (¥44.1 trillion) and liabilities (¥31.9 trillion) in the context of global economic conditions.