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 17y） |
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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 2026-08-31・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 | 0.727397 (177 days) per 100 |
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| Settlement Amount | — |
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| Modified Duration | 14.87 |
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| Macaulay Duration | 14.98 |
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| DV01 | — |
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| Convexity | 248.2 |
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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 2026-09-13 ・ CMT 2026-09-10
| CMT interpolated (rem 17.0y) | 3.580 % → ref. price 73.626 |
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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 2026-12-13 | -50bp | 3.066 | 79.563 | -0.382 | +7.47% | +29.88% |
| -25bp | 3.316 | 76.759 | -0.382 | +3.70% | +14.80% |
| Unchanged (roll-down) | 3.566 | 74.066 | -0.382 | +0.08% | +0.31% |
| +25bp | 3.816 | 71.480 | -0.382 | -3.40% | -13.60% |
| +50bp | 4.066 | 68.996 | -0.382 | -6.74% | -26.97% |
| 6m 2027-03-13 | -50bp | 3.052 | 79.958 | 0.738 | +9.51% | +19.02% |
| -25bp | 3.302 | 77.174 | 0.738 | +5.76% | +11.53% |
| Unchanged (roll-down) | 3.552 | 74.498 | 0.738 | +2.16% | +4.33% |
| +25bp | 3.802 | 71.927 | 0.738 | -1.29% | -2.59% |
| +50bp | 4.052 | 69.457 | 0.738 | -4.62% | -9.23% |
| 12m 2027-09-13 | -50bp | 3.022 | 80.753 | 1.500 | +11.60% | +11.60% |
| -25bp | 3.272 | 78.011 | 1.500 | +7.91% | +7.91% |
| Unchanged (roll-down) | 3.522 | 75.372 | 1.500 | +4.37% | +4.37% |
| +25bp | 3.772 | 72.835 | 1.500 | +0.95% | +0.95% |
| +50bp | 4.022 | 70.393 | 1.500 | -2.33% | -2.33% |