Official Result (MOF)
| Competitive Bids | ¥816.7B |
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| Accepted Amount | ¥249.9B |
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| Lowest Accepted Price | 97.70（0.860%） |
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| Weighted Avg Price | — |
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| Allotment Ratio | 21.4285% |
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| Non-competitive I | — |
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| Non-competitive II | — |
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Source: https://www.mof.go.jp/jgbs/auction/calendar/nyusatsu/resul20260812.htm
Offering Terms (from MOF notice) documents →
| Official name | 利付国庫債券（物価連動・10年）（第31回） |
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| Legal basis | 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10日及び9月10日 |
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| Planned amount | ¥250B |
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| Bid deadline | 2026-08-12 11:50 |
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| Payment date | 2026-08-13 |
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| Non-competitive II | — |
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| Price terms | 募入最低価格により決定 |
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Derived Metrics calc auction-v1 / auction-v2
| This | Prev | avg (12) | min | max | z |
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| Bid/Cover | 3.27 | 3.40 | 3.20 | 2.73 | 4.27 | +0.17 |
| Tail (sen) | — | — | — | — | — | — |
| Non-competitive take-up | 0.0% | 0.0% | |
| Grade | C (score +0.17) | (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
| Auction Date | Issue | Bid/Cover | Tail (sen) | Avg Yield (%) |
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| 2026-08-12 | Inflation-Indexed JGB (10-Year) No. 31 | 3.27 | — | 0.860 |
| 2026-05-01 | Inflation-Indexed JGB (10-Year) No. 31 | 3.40 | — | 0.578 |
| 2026-02-10 | Inflation-Indexed JGB (10-Year) No. 30 | 3.38 | — | 0.458 |
| 2025-11-17 | Inflation-Indexed JGB (10-Year) No. 30 | 3.46 | — | 0.113 |
| 2025-08-15 | Inflation-Indexed JGB (10-Year) No. 30 | 2.92 | — | 0.078 |
| 2025-05-22 | Inflation-Indexed JGB (10-Year) No. 30 | 3.04 | — | 0.000 |
| 2025-02-12 | Inflation-Indexed JGB (10-Year) No. 29 | 2.76 | — | -0.269 |
| 2024-11-11 | Inflation-Indexed JGB (10-Year) No. 29 | 3.54 | — | -0.362 |
| 2024-08-16 | Inflation-Indexed JGB (10-Year) No. 29 | 2.96 | — | -0.426 |
| 2024-05-20 | Inflation-Indexed JGB (10-Year) No. 29 | 4.27 | — | -0.545 |
| 2024-02-05 | Inflation-Indexed JGB (10-Year) No. 28 | 3.00 | — | -0.468 |
| 2023-11-07 | Inflation-Indexed JGB (10-Year) No. 28 | 2.73 | — | -0.480 |
| 2023-08-03 | Inflation-Indexed JGB (10-Year) No. 28 | 2.91 | — | -0.510 |