Official Result (MOF)
| Auction Date | 1987-09-01 |
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| Issue Date | 1987-09-21 |
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| Issue | JGB (20-Year) No. 4（new） |
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| Coupon (%) | 5.6% |
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| Maturity | 2007-09-20 |
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| Method | price conventional |
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| Offering | ¥500B |
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| Competitive Bids | ¥713.1B |
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| Accepted Amount | ¥456.4B |
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| Lowest Accepted Price | 95.75（6.070%） |
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| Weighted Avg Price | 96.93（5.934%） |
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| Allotment Ratio | — |
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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/reference/appendix/jgb_historical_data.xls
Derived Metrics calc auction-v1 / auction-v2
| This | Prev | avg (12) | min | max | z |
|---|
| Bid/Cover | 1.56 | — | — | — | — | — |
| Tail (sen) | 118 | — | — | — | — | — |
| Non-competitive take-up | 0.0% | — | |
| Grade | — | (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) | 13.6 | — |
Same-tenor Auction History
| Auction Date | Issue | Bid/Cover | Tail (sen) | Avg Yield (%) |
|---|
| 1987-09-01 | JGB (20-Year) No. 4 | 1.56 | 118 | 5.934 |