Official Result (MOF)
| Auction Date | 1990-05-10 |
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| Issue Date | 1990-05-31 |
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| Issue | JGB (20-Year) No. 13（new） |
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| Coupon (%) | 6.8% |
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| Maturity | 2010-09-20 |
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| Method | price conventional |
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| Offering | ¥300B |
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| Competitive Bids | ¥901.5B |
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| Accepted Amount | ¥307B |
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| Lowest Accepted Price | 100.00（6.800%） |
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| Weighted Avg Price | 100.51（6.739%） |
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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 |
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| Bid/Cover | 2.94 | 1.60 | 1.94 | 1.29 | 2.79 | +1.66 |
| Tail (sen) | 51 | 16 | 45 | 16 | 118 | +0.16 |
| Non-competitive take-up | 0.0% | 0.0% | |
| Grade | B (score +0.75) | (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) | 6.1 | 1.7 |
Same-tenor Auction History
| Auction Date | Issue | Bid/Cover | Tail (sen) | Avg Yield (%) |
|---|
| 1990-05-10 | JGB (20-Year) No. 13 | 2.94 | 51 | 6.739 |
| 1989-08-01 | JGB (20-Year) No. 11 | 1.60 | 16 | 5.028 |
| 1989-05-11 | JGB (20-Year) No. 11 | 1.29 | 39 | 5.171 |
| 1989-02-01 | JGB (20-Year) No. 10 | 2.24 | 16 | 5.028 |
| 1988-11-01 | JGB (20-Year) No. 9 | 2.55 | 18 | 5.056 |
| 1988-07-21 | JGB (20-Year) No. 8 | 1.35 | 58 | 5.437 |
| 1988-04-19 | JGB (20-Year) No. 7 | 2.76 | 20 | 4.993 |
| 1988-02-18 | JGB (20-Year) No. 6 | 2.79 | 18 | 5.296 |
| 1987-12-01 | JGB (20-Year) No. 5 | 1.35 | 102 | 6.077 |
| 1987-09-01 | JGB (20-Year) No. 4 | 1.56 | 118 | 5.934 |