bonds / 20Y / JGB (20-Year) No. 179
Bond Information
| Name | JGB (20-Year) No. 179 |
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| ISIN | — |
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| Issue # | 179 |
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| Coupon (%) | 0.5% semi-annual |
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| Issue Date | 2022-01-17 |
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| Maturity | 2041-12-20 （Remaining 15.3y） |
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| Outstanding | ¥3.5T （2026-03-31・MOF） |
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| Total issued | ¥4.1T （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 ¥63.7B（last 2026-07-08・BOJ） |
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| BOJ Holding | ¥270.9B（7.7%）（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 | 0.500 % |
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| Compound Yield | 0.4996 % |
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| Accrued Interest | 0.116438 (85 days) per 100 |
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| Settlement Amount | — |
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| Modified Duration | 14.68 |
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| Macaulay Duration | 14.71 |
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| DV01 | — |
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| Convexity | 228.2 |
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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 | 0.250 |
| 2027-06-20 | coupon | 0.250 |
| 2027-12-20 | coupon | 0.250 |
| …（26 omitted）… |
| 2041-06-20 | coupon | 0.250 |
| 2041-12-20 | coupon + redemption | 100.250 |
Related Auctions
Horizon total return settle 2026-09-13 ・ CMT 2026-09-10
| CMT interpolated (rem 15.3y) | 3.479 % → ref. price 64.922 |
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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 | 2.964 | 70.283 | 0.125 | +8.43% | +33.74% |
| -25bp | 3.214 | 67.843 | 0.125 | +4.68% | +18.73% |
| Unchanged (roll-down) | 3.464 | 65.493 | 0.125 | +1.07% | +4.28% |
| +25bp | 3.714 | 63.230 | 0.125 | -2.41% | -9.64% |
| +50bp | 3.964 | 61.050 | 0.125 | -5.76% | -23.05% |
| 6m 2027-03-13 | -50bp | 2.939 | 70.921 | 0.247 | +9.60% | +19.21% |
| -25bp | 3.189 | 68.496 | 0.247 | +5.87% | +11.75% |
| Unchanged (roll-down) | 3.439 | 66.159 | 0.247 | +2.28% | +4.56% |
| +25bp | 3.689 | 63.906 | 0.247 | -1.18% | -2.36% |
| +50bp | 3.939 | 61.736 | 0.247 | -4.52% | -9.04% |
| 12m 2027-09-13 | -50bp | 2.884 | 72.251 | 0.500 | +12.04% | +12.04% |
| -25bp | 3.134 | 69.857 | 0.500 | +8.36% | +8.36% |
| Unchanged (roll-down) | 3.384 | 67.548 | 0.500 | +4.81% | +4.81% |
| +25bp | 3.634 | 65.320 | 0.500 | +1.38% | +1.38% |
| +50bp | 3.884 | 63.170 | 0.500 | -1.93% | -1.93% |