bonds / 40Y / JGB (40-Year) No. 8
Bond Information
| Name | JGB (40-Year) No. 8 |
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| ISIN | — |
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| Issue # | 8 |
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| Coupon (%) | 1.4% semi-annual |
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| Issue Date | 2015-04-27 |
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| Maturity | 2055-03-20 （Remaining 28.6y） |
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| Outstanding | ¥2.5T （2026-03-31・MOF） |
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| Total issued | ¥2.4T （annual report, FY-end） |
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| Statutory basis | 4条借換前倒財投 |
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| STRIPS principal | ¥10.1B （2026-06-30） |
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| SLF usage | last 30d ¥300M／ total ¥173.3B（last 2026-07-27・BOJ） |
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| BOJ Holding | ¥1.3T（53.2%）（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 | 1.400 % |
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| Compound Yield | 1.3990 % |
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| Accrued Interest | 0.598356 (156 days) per 100 |
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| Settlement Amount | — |
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| Modified Duration | 23.36 |
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| Macaulay Duration | 23.52 |
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| DV01 | — |
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| Convexity | 630.9 |
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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 | 0.700 |
| 2027-03-20 | coupon | 0.700 |
| 2027-09-20 | coupon | 0.700 |
| …（53 omitted）… |
| 2054-09-20 | coupon | 0.700 |
| 2055-03-20 | coupon + redemption | 100.700 |
Related Auctions
Horizon total return settle 2026-08-23 ・ CMT 2026-08-20
| CMT interpolated (rem 28.6y) | 4.001 % → ref. price 55.913 |
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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 | 3.502 | 62.397 | -0.353 | +10.85% | +43.40% |
| -25bp | 3.752 | 59.154 | -0.353 | +5.11% | +20.45% |
| Unchanged (roll-down) | 4.002 | 56.115 | -0.353 | -0.27% | -1.07% |
| +25bp | 4.252 | 53.264 | -0.353 | -5.31% | -21.24% |
| +50bp | 4.502 | 50.590 | -0.353 | -10.04% | -40.17% |
| 6m 2027-02-23 | -50bp | 3.504 | 62.580 | 0.700 | +13.04% | +26.07% |
| -25bp | 3.754 | 59.347 | 0.700 | +7.32% | +14.63% |
| Unchanged (roll-down) | 4.004 | 56.314 | 0.700 | +1.95% | +3.90% |
| +25bp | 4.254 | 53.470 | 0.700 | -3.08% | -6.17% |
| +50bp | 4.504 | 50.800 | 0.700 | -7.81% | -15.62% |
| 12m 2027-08-23 | -50bp | 3.506 | 62.938 | 1.400 | +14.91% | +14.91% |
| -25bp | 3.756 | 59.724 | 1.400 | +9.22% | +9.22% |
| Unchanged (roll-down) | 4.006 | 56.707 | 1.400 | +3.88% | +3.88% |
| +25bp | 4.256 | 53.873 | 1.400 | -1.13% | -1.13% |
| +50bp | 4.506 | 51.212 | 1.400 | -5.84% | -5.84% |