Official Result (MOF)
| Auction Date | 1989-06-28 |
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| Issue Date | 1989-07-20 |
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| Issue | JGB (10-Year) No. 122（new） |
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| Coupon (%) | 5% |
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| Maturity | 1999-09-20 |
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| Method | price conventional |
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| Offering | ¥600B |
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| Competitive Bids | ¥675.5B |
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| Accepted Amount | ¥236.1B |
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| Lowest Accepted Price | 98.70（5.197%） |
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| Weighted Avg Price | 98.85（5.174%） |
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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 | 2.86 | 2.94 | 4.25 | 2.94 | 5.35 | — |
| Tail (sen) | 15 | 25 | 17 | 11 | 25 | — |
| Non-competitive take-up | 0.0% | 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) | 2.3 | 3.8 |
Same-tenor Auction History
| Auction Date | Issue | Bid/Cover | Tail (sen) | Avg Yield (%) |
|---|
| 1989-06-28 | JGB (10-Year) No. 122 | 2.86 | 15 | 5.174 |
| 1989-06-01 | JGB (10-Year) No. 121 | 2.94 | 25 | 5.088 |
| 1989-04-26 | JGB (10-Year) No. 119 | 4.45 | 15 | 4.837 |
| 1989-04-05 | JGB (10-Year) No. 119 | 5.35 | 11 | 4.813 |