Official Result (MOF)
| Auction Date | 2025-05-28 |
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| Issue Date | 2025-05-29 |
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| Issue | JGB (40-Year) No. 18（new） |
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| Coupon (%) | 3.1% |
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| Maturity | 2065-03-20 |
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| Method | yield Dutch |
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| Offering | ¥500B |
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| Competitive Bids | ¥1.1T |
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| Accepted Amount | ¥499.9B |
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| Lowest Accepted Price | 99.20（3.135%） |
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| Weighted Avg Price | — |
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| Allotment Ratio | — |
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| Non-competitive I | — |
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| Non-competitive II | ¥48.6B |
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Source: https://www.mof.go.jp/jgbs/reference/appendix/jgb_historical_data.xls
Offering Terms (from MOF notice) documents →
| Official name | 利付国庫債券（40年）（第18回） |
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| Legal basis | 財政法（昭和22年法律第34号）第4条第1項及び特別会計に関する法律（平成19年法律第23号）第46条第1項 |
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| Coupon dates | 毎年3月20日及び9月20日 |
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| Planned amount | ¥500B |
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| Bid deadline | 2025-05-28 11:50 |
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| Payment date | 2025-05-29 |
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| Non-competitive II | held |
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| Price terms | — |
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Derived Metrics calc auction-v1 / auction-v2
| This | Prev | avg (12) | min | max | z |
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| Bid/Cover | 2.21 | 2.92 | 2.47 | 2.15 | 2.95 | -0.92 |
| Tail (sen) | — | — | — | — | — | — |
| Non-competitive take-up | 8.9% | 3.0% | |
| Grade | D (score -0.92) | (z(B/C) − z(tail))/2 bucketed A(≥1)/B(≥0.3)/C/D(≤−0.3)/E(≤−1), vs last 12 same-tenor |
Same-tenor Auction History