Business Context and Reporting Period
This Form 6-K filing by Mizuho Financial Group, Inc. (Mizuho) was submitted on February 14, 2019. The report discloses the Group's Capital Ratio data as of December 31, 2018, in accordance with international standards. The filing covers consolidated figures for the Group as well as specific data for its primary subsidiaries: Mizuho Bank and Mizuho Trust & Banking.
Key Financial Metrics: Capital Adequacy
The filing focuses exclusively on regulatory capital ratios and risk-weighted assets. No revenue, profit, cash flow, or debt figures are provided in this document.
| Metric (Consolidated) | As of Dec 31, 2018 | Change vs. Sep 30, 2018 |
|---|---|---|
| Total Capital Ratio | 17.71% | (0.53%) |
| Tier 1 Capital Ratio | 14.88% | (0.56%) |
| Common Equity Tier 1 (CET1) Ratio | 11.88% | (0.61%) |
| Total Capital (Billions of Yen) | 10,920.2 | +59.7 |
| Risk Weighted Assets (Billions of Yen) | 61,655.5 | +2,126.5 |
Subsidiary Highlights (Consolidated Basis):
- Mizuho Bank: Total Capital Ratio of 17.89% (down 0.63% from prior quarter); Risk Weighted Assets increased by 2,827.1 billion yen.
- Mizuho Trust & Banking: Total Capital Ratio of 21.62% (up 1.34% from prior quarter); Risk Weighted Assets decreased by 167.1 billion yen.
Material Changes Versus Prior Period
Compared to the September 30, 2018 period, the Group experienced a decline in all three primary capital ratios (Total, Tier 1, and CET1). This decline was driven primarily by a significant increase in Risk Weighted Assets (RWA), which rose by approximately 2.1 trillion yen. While Total Capital increased slightly by 59.7 billion yen, the growth in RWA outpaced capital accumulation, resulting in lower ratios.
Conversely, Mizuho Trust & Banking saw an improvement in its capital ratios, supported by a reduction in its Risk Weighted Assets.
Guidance, Outlook, and Risks
The filing text does not provide management commentary, forward-looking guidance, or specific risk factors beyond the disclosure of capital adequacy metrics. The document serves strictly as a regulatory announcement of the capital position as of the end of the fiscal year.
Investor Verification Checklist
- Verify the impact of the 2.1 trillion yen increase in Risk Weighted Assets on future profitability and capital deployment.
- Confirm whether the decline in CET1 ratio (to 11.88%) remains comfortably above regulatory minimums and internal targets.
- Review the full annual report (Form 20-F) for revenue, net income, and cash flow data, as this 6-K filing contains only capital ratio information.
- Assess the divergence in capital trends between Mizuho Bank (declining ratios) and Mizuho Trust & Banking (improving ratios).