bonds / 20Y / JGB (20-Year) No. 177
Bond Information
| Name | JGB (20-Year) No. 177 |
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| ISIN | — |
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| Issue # | 177 |
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| Coupon (%) | 0.4% semi-annual |
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| Issue Date | 2021-07-14 |
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| Maturity | 2041-06-20 （Remaining 14.8y） |
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| Outstanding | ¥4.1T （2026-03-31・MOF） |
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| Total issued | ¥3.9T （annual report, FY-end） |
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| Statutory basis | 借換前倒財投 |
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| SLF usage | last 30d ¥1.5B／ total ¥77.2B（last 2026-09-10・BOJ） |
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| BOJ Holding | ¥528.4B（12.9%）（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 | 0.400 % |
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| Compound Yield | 0.3997 % |
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| Accrued Interest | 0.093151 (85 days) per 100 |
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| Settlement Amount | — |
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| Modified Duration | 14.32 |
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| Macaulay Duration | 14.35 |
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| DV01 | — |
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| Convexity | 216.3 |
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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 | 0.200 |
| 2027-06-20 | coupon | 0.200 |
| 2027-12-20 | coupon | 0.200 |
| …（25 omitted）… |
| 2040-12-20 | coupon | 0.200 |
| 2041-06-20 | coupon + redemption | 100.200 |
Related Auctions
Horizon total return settle 2026-09-13 ・ CMT 2026-09-10
| CMT interpolated (rem 14.8y) | 3.438 % → ref. price 65.028 |
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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 | 2.911 | 70.423 | 0.100 | +8.44% | +33.75% |
| -25bp | 3.161 | 68.033 | 0.100 | +4.77% | +19.07% |
| Unchanged (roll-down) | 3.411 | 65.729 | 0.100 | +1.23% | +4.92% |
| +25bp | 3.661 | 63.507 | 0.100 | -2.18% | -8.73% |
| +50bp | 3.911 | 61.365 | 0.100 | -5.47% | -21.89% |
| 6m 2027-03-13 | -50bp | 2.884 | 71.087 | 0.198 | +9.61% | +19.21% |
| -25bp | 3.134 | 68.712 | 0.198 | +5.96% | +11.92% |
| Unchanged (roll-down) | 3.384 | 66.422 | 0.198 | +2.44% | +4.89% |
| +25bp | 3.634 | 64.212 | 0.198 | -0.95% | -1.90% |
| +50bp | 3.884 | 62.080 | 0.198 | -4.22% | -8.45% |
| 12m 2027-09-13 | -50bp | 2.829 | 72.438 | 0.400 | +11.99% | +11.99% |
| -25bp | 3.079 | 70.097 | 0.400 | +8.40% | +8.40% |
| Unchanged (roll-down) | 3.329 | 67.837 | 0.400 | +4.93% | +4.93% |
| +25bp | 3.579 | 65.654 | 0.400 | +1.58% | +1.58% |
| +50bp | 3.829 | 63.545 | 0.400 | -1.66% | -1.66% |