Official Result (MOF)
| Auction Date | 2025-07-03 |
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| Issue Date | 2025-07-04 |
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| Issue | JGB (30-Year) No. 87（new） |
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| Coupon (%) | 2.8% |
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| Maturity | 2055-06-20 |
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| Method | price conventional |
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| Offering | ¥700B |
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| Competitive Bids | ¥1.9T |
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| Accepted Amount | ¥529.3B |
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| Lowest Accepted Price | 99.55（2.827%） |
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| Weighted Avg Price | 99.86（2.808%） |
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| Allotment Ratio | — |
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| Non-competitive I | ¥170.1B |
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| Non-competitive II | ¥0M |
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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（30年）（第87回） |
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| Legal basis | 財政法（昭和22年法律第34号）第4条第1項並びに特別会計に関する法律（平成19年法律第23号）第46条第1項及び第62条第1項 |
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| Coupon dates | 毎年6月20日及び12月20日 |
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| Planned amount | ¥700B |
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| Bid deadline | 2025-07-03 11:50 |
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| Payment date | 2025-07-04 |
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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 | 3.58 | 2.92 | 3.33 | 2.92 | 3.74 | +0.90 |
| Tail (sen) | 31 | 49 | 21 | 2 | 75 | +0.48 |
| Non-competitive take-up | 24.3% | 31.0% | |
| Grade | C (score +0.21) | (z(B/C) − z(tail))/2 bucketed A(≥1)/B(≥0.3)/C/D(≤−0.3)/E(≤−1), vs last 12 same-tenor |
| Yield tail (bp) | 1.9 | 3.4 |
Same-tenor Auction History