bonds / 20Y / JGB (20-Year) No. 122
Bond Information
| Name | JGB (20-Year) No. 122 |
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| ISIN | — |
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| Issue # | 122 |
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| Coupon (%) | 1.8% semi-annual |
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| Issue Date | 2010-10-26 |
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| Maturity | 2030-09-20 （Remaining 4.1y） |
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| Outstanding | ¥1.7T （2026-03-31・MOF） |
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| Total issued | ¥1.7T （annual report, FY-end） |
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| Statutory basis | 特例借換前倒財投 |
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| SLF usage | last 30d —／ total ¥32.4B（last 2026-03-06・BOJ） |
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| BOJ Holding | ¥1.1T（66.0%）（as of 2026-08-10・Source: BOJ・Ratios approximate due to differing as-of dates） |
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| Status | active |
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Results
Yield Calculator (price input) | Simple Yield | 1.800 % |
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| Compound Yield | 1.7968 % |
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| Accrued Interest | 0.769315 (156 days) per 100 |
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| Settlement Amount | — |
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| Modified Duration | 3.89 |
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| Macaulay Duration | 3.92 |
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| DV01 | — |
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| Convexity | 17.5 |
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Estimates based on the input price.
Cashflow Schedule
| Date | Type | Amount (per 100) |
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| 2026-09-20 | coupon | 0.900 |
| 2027-03-20 | coupon | 0.900 |
| 2027-09-20 | coupon | 0.900 |
| …（4 omitted）… |
| 2030-03-20 | coupon | 0.900 |
| 2030-09-20 | coupon + redemption | 100.900 |
Related Auctions
| Auction Date | | Bid/Cover | Tail (sen) | Avg Yield (%) |
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| 2010-10-21 | new | 4.41 | 4 | 1.770 |
Horizon total return settle 2026-08-23 ・ CMT 2026-08-20
| CMT interpolated (rem 4.1y) | 2.010 % → ref. price 99.170 |
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| G-spread (vs interpolated CMT) | — |
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| Horizon | Scenario | Yield@H | Price@H | Carry | Total return | Ann. |
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| 3m 2026-11-23 | -50bp | 1.468 | 101.228 | -0.454 | +1.60% | +6.42% |
| -25bp | 1.718 | 100.299 | -0.454 | +0.68% | +2.70% |
| Unchanged (roll-down) | 1.968 | 99.380 | -0.454 | -0.24% | -0.98% |
| +25bp | 2.218 | 98.470 | -0.454 | -1.15% | -4.62% |
| +50bp | 2.468 | 97.571 | -0.454 | -2.05% | -8.22% |
| 6m 2027-02-23 | -50bp | 1.421 | 101.313 | 0.900 | +3.04% | +6.09% |
| -25bp | 1.671 | 100.442 | 0.900 | +2.17% | +4.35% |
| Unchanged (roll-down) | 1.921 | 99.580 | 0.900 | +1.31% | +2.62% |
| +25bp | 2.171 | 98.726 | 0.900 | +0.46% | +0.91% |
| +50bp | 2.421 | 97.881 | 0.900 | -0.39% | -0.78% |
| 12m 2027-08-23 | -50bp | 1.328 | 101.406 | 1.800 | +4.04% | +4.04% |
| -25bp | 1.578 | 100.651 | 1.800 | +3.28% | +3.28% |
| Unchanged (roll-down) | 1.828 | 99.903 | 1.800 | +2.53% | +2.53% |
| +25bp | 2.078 | 99.161 | 1.800 | +1.79% | +1.79% |
| +50bp | 2.328 | 98.426 | 1.800 | +1.06% | +1.06% |