Business Context and Reporting Period
This Form 6-K filing by Mizuho Financial Group, Inc. (Mizuho) was submitted on August 14, 2023. The report announces the Group's capital ratios as of June 30, 2023, covering the consolidated Mizuho Financial Group, Mizuho Bank, and Mizuho Trust & Banking. The data is presented under International Standards and compares the June 30, 2023 period to the prior quarter ending March 31, 2023.
Key Financial Metrics: Capital and Liquidity
The filing focuses exclusively on regulatory capital adequacy and risk-weighted assets. It does not provide revenue, profit, cash flow, or margin data.
| Metric | Mizuho Financial Group (Consolidated) | Mizuho Bank (Consolidated) | Mizuho Trust & Banking (Consolidated) |
|---|---|---|---|
| Total Capital Ratio (%) | 15.85 | 14.71 | 27.68 |
| Tier 1 Capital Ratio (%) | 13.99 | 12.85 | 27.67 |
| Common Equity Tier 1 (CET1) Ratio (%) | 11.98 | 10.69 | 27.67 |
| Total Capital (Billions of Yen) | 11,707.5 | 10,097.3 | 460.3 |
| Risk-Weighted Assets (Billions of Yen) | 73,859.1 | 68,616.8 | 1,662.8 |
Material Changes Versus Prior Period
Compared to the March 31, 2023 quarter:
- Mizuho Financial Group: Total Capital increased by 400.6 billion yen, while Risk-Weighted Assets rose by 3,425.0 billion yen. Consequently, the Total Capital Ratio decreased by 0.20 percentage points to 15.85%, while the CET1 Ratio improved by 0.18 percentage points to 11.98%.
- Mizuho Bank: Total Capital grew by 327.5 billion yen against a 3,245.0 billion yen increase in Risk-Weighted Assets. The Total Capital Ratio declined by 0.23 percentage points to 14.71%, whereas the CET1 Ratio increased by 0.18 percentage points to 10.69%.
- Mizuho Trust & Banking: Demonstrated strong capital growth with Total Capital up 15.4 billion yen and Risk-Weighted Assets down 51.4 billion yen. This resulted in a significant 1.73 percentage point increase in the Total Capital Ratio to 27.68%.
Guidance, Outlook, and Risks
The filing contains no management commentary, forward-looking guidance, or specific risk disclosures beyond the standard regulatory capital reporting. No unusual items or contingencies were disclosed in this specific announcement.
Investor Verification Checklist
- Verify the impact of the 3.4 trillion yen increase in Risk-Weighted Assets on future capital deployment capacity.
- Confirm the drivers behind the divergence between the declining Total Capital Ratio and the improving CET1 Ratio for the Group and Bank.
- Review the full quarterly earnings release for revenue and profit metrics, as they are absent from this capital ratio filing.
- Assess the sustainability of Mizuho Trust & Banking's high capital ratios (27.68%) relative to its asset base.