Official Result (MOF)
| Auction Date | 2026-09-03 |
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| Issue Date | 2026-09-04 |
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| Issue | JGB (30-Year) No. 91（reopen） |
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| Coupon (%) | 4% |
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| Maturity | 2056-06-20 |
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| Method | price conventional |
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| Offering | ¥600B |
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| Competitive Bids | ¥1.7T |
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| Accepted Amount | ¥456.2B |
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| Lowest Accepted Price | 98.65（4.100%） |
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| Weighted Avg Price | 98.93（4.079%） |
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| Allotment Ratio | 30.337% |
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| Non-competitive I | ¥143.4B |
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| Non-competitive II | — |
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Source: https://www.mof.go.jp/jgbs/auction/calendar/nyusatsu/resul20260903.htm
Offering Terms (from MOF notice) documents →
| Official name | 利付国庫債券（30年）（第91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6月20日及び12月20日 |
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| Planned amount | ¥600B |
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| Bid deadline | 2026-09-03 11:50 |
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| Payment date | 2026-09-04 |
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| Non-competitive II | held |
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| Price terms | — |
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Derived Metrics
| This | Prev | avg (12) | min | max | z |
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| Bid/Cover | 3.79 | 3.86 | 3.52 | 2.94 | 4.55 | +0.60 |
| Tail (sen) | 28 | 21 | 18 | 4 | 38 | +1.21 |
| Non-competitive take-up | 23.9% | 23.9% | |
| Grade | D (score -0.31) | (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) | 2.1 | 1.5 |
Same-tenor Auction History