Official Result (MOF)
| Auction Date | 2009-10-08 |
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| Issue Date | 2009-10-14 |
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| Issue | JGB (30-Year) No. 31（new） |
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| Coupon (%) | 2.2% |
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| Maturity | 2039-09-20 |
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| Method | price conventional |
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| Offering | ¥600B |
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| Competitive Bids | ¥1.8T |
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| Accepted Amount | ¥551.5B |
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| Lowest Accepted Price | 101.10（2.139%） |
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| Weighted Avg Price | 101.14（2.137%） |
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| Allotment Ratio | — |
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| Non-competitive I | ¥48B |
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| Non-competitive II | ¥53.9B |
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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 | — |
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| Legal basis | — |
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| Coupon dates | — |
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| Planned amount | — |
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| Bid deadline | — |
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| Payment date | — |
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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 | 3.27 | 3.27 | 3.53 | 2.50 | 4.26 | -0.58 |
| Tail (sen) | 4 | 7 | 12 | 4 | 31 | -1.11 |
| Non-competitive take-up | 15.6% | 17.5% | |
| Grade | C (score +0.27) | (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) | 0.2 | 0.4 |
Same-tenor Auction History