bonds / 20Y / JGB (20-Year) No. 186
Bond Information
| Name | JGB (20-Year) No. 186 |
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| ISIN | — |
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| Issue # | 186 |
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| Coupon (%) | 1.5% semi-annual |
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| Issue Date | 2023-10-18 |
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| Maturity | 2043-09-20 （Remaining 17.1y） |
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| Outstanding | ¥3.9T （2026-03-31・MOF） |
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| Total issued | ¥3.9T （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 —／ total ¥15.2B（last 2026-07-17・BOJ） |
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| BOJ Holding | ¥743.4B（19.3%）（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 | 1.500 % |
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| Compound Yield | 1.4986 % |
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| Accrued Interest | 0.641096 (156 days) per 100 |
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| Settlement Amount | — |
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| Modified Duration | 14.93 |
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| Macaulay Duration | 15.04 |
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| DV01 | — |
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| Convexity | 249.9 |
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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 | 0.750 |
| 2027-03-20 | coupon | 0.750 |
| 2027-09-20 | coupon | 0.750 |
| …（30 omitted）… |
| 2043-03-20 | coupon | 0.750 |
| 2043-09-20 | coupon + redemption | 100.750 |
Related Auctions
Horizon total return settle 2026-08-23 ・ CMT 2026-08-20
| CMT interpolated (rem 17.1y) | 3.538 % → ref. price 74.018 |
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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 | 3.022 | 80.018 | -0.378 | +7.53% | +30.12% |
| -25bp | 3.272 | 77.187 | -0.378 | +3.74% | +14.96% |
| Unchanged (roll-down) | 3.522 | 74.470 | -0.378 | +0.10% | +0.40% |
| +25bp | 3.772 | 71.861 | -0.378 | -3.40% | -13.58% |
| +50bp | 4.022 | 69.355 | -0.378 | -6.75% | -27.01% |
| 6m 2027-02-23 | -50bp | 3.006 | 80.428 | 0.750 | +9.59% | +19.18% |
| -25bp | 3.256 | 77.618 | 0.750 | +5.83% | +11.65% |
| Unchanged (roll-down) | 3.506 | 74.918 | 0.750 | +2.21% | +4.42% |
| +25bp | 3.756 | 72.324 | 0.750 | -1.26% | -2.53% |
| +50bp | 4.006 | 69.832 | 0.750 | -4.60% | -9.20% |
| 12m 2027-08-23 | -50bp | 2.976 | 81.223 | 1.500 | +11.66% | +11.66% |
| -25bp | 3.226 | 78.454 | 1.500 | +7.95% | +7.95% |
| Unchanged (roll-down) | 3.476 | 75.791 | 1.500 | +4.38% | +4.38% |
| +25bp | 3.726 | 73.229 | 1.500 | +0.95% | +0.95% |
| +50bp | 3.976 | 70.765 | 1.500 | -2.35% | -2.35% |