bonds / 20Y / JGB (20-Year) No. 187
Bond Information
| Name | JGB (20-Year) No. 187 |
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| ISIN | — |
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| Issue # | 187 |
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| Coupon (%) | 1.3% semi-annual |
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| Issue Date | 2024-01-19 |
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| Maturity | 2043-12-20 （Remaining 17.3y） |
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| Outstanding | ¥2.5T （2026-03-31・MOF） |
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| Total issued | ¥3.2T （annual report, FY-end） |
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| Statutory basis | 4条特例借換前倒財投 |
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| SLF usage | last 30d ¥10.7B／ total ¥42.9B（last 2026-07-29・BOJ） |
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| BOJ Holding | ¥259.3B（10.3%）（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 | 1.300 % |
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| Compound Yield | 1.2990 % |
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| Accrued Interest | 0.227945 (64 days) per 100 |
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| Settlement Amount | — |
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| Modified Duration | 15.44 |
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| Macaulay Duration | 15.54 |
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| DV01 | — |
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| Convexity | 263.8 |
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Estimates based on the input price.
Cashflow Schedule
| Date | Type | Amount (per 100) |
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| 2026-12-20 | coupon | 0.650 |
| 2027-06-20 | coupon | 0.650 |
| 2027-12-20 | coupon | 0.650 |
| …（30 omitted）… |
| 2043-06-20 | coupon | 0.650 |
| 2043-12-20 | coupon + redemption | 100.650 |
Related Auctions
Horizon total return settle 2026-08-23 ・ CMT 2026-08-20
| CMT interpolated (rem 17.3y) | 3.553 % → ref. price 71.008 |
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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 | 3.038 | 76.961 | 0.328 | +8.82% | +35.26% |
| -25bp | 3.288 | 74.163 | 0.328 | +4.89% | +19.56% |
| Unchanged (roll-down) | 3.538 | 71.480 | 0.328 | +1.12% | +4.49% |
| +25bp | 3.788 | 68.905 | 0.328 | -2.49% | -9.97% |
| +50bp | 4.038 | 66.434 | 0.328 | -5.96% | -23.85% |
| 6m 2027-02-23 | -50bp | 3.022 | 77.400 | 0.654 | +9.89% | +19.78% |
| -25bp | 3.272 | 74.620 | 0.654 | +5.99% | +11.98% |
| Unchanged (roll-down) | 3.522 | 71.952 | 0.654 | +2.24% | +4.49% |
| +25bp | 3.772 | 69.391 | 0.654 | -1.35% | -2.70% |
| +50bp | 4.022 | 66.932 | 0.654 | -4.80% | -9.61% |
| 12m 2027-08-23 | -50bp | 2.991 | 78.256 | 1.300 | +12.00% | +12.00% |
| -25bp | 3.241 | 75.514 | 1.300 | +8.15% | +8.15% |
| Unchanged (roll-down) | 3.491 | 72.879 | 1.300 | +4.45% | +4.45% |
| +25bp | 3.741 | 70.347 | 1.300 | +0.90% | +0.90% |
| +50bp | 3.991 | 67.913 | 1.300 | -2.52% | -2.52% |